CN107790718A - A kind of control system of 3D printing equipment - Google Patents

Abstract

This application provides a control system for 3D printing equipment, which relates to the technical field of 3D printing. The control system includes: 3D printing equipment and a main control device; the 3D printing equipment includes: a light source room, a light source moving device located in the light source room, and a light source mechanism ; The light source moving device includes: a fixed part, a movable part and a moving mechanism; the main control device is used to issue movement control instructions to the moving mechanism and/or the movable part according to the graphic shape of the current processing layer of the object to be printed, and based on the movement control Instructions control the moving mechanism and/or the movable part to drive the light source mechanism to move on the fixed part according to the set processing sequence; since the light source mechanism moves along the fixed part, the range of motion of the light source mechanism can be increased, and 3D damage caused by the movement of the light source mechanism can be avoided. The problem of small size and poor precision of the printer's processed configuration parts further increases the size of the formed components and improves the processing accuracy.

Description

A control system for 3D printing equipment

technical field

The present application relates to the technical field of printing control, in particular, to a control system of 3D printing equipment.

Background technique

Additive manufacturing 3D printing technology is a technology based on digital model files and using bondable materials such as powdered metal or plastic to construct objects by layer-by-layer printing.

The powder supply system, construction room and work room of the prior art 3D printing equipment are all designed in an integrated box-type body. The construction room is equipped with a piston and a piston plate, and the working substrate is placed on the piston plate. When the piston plate pushes the working substrate up to the thickness of the working surface of the metal powder layer from the bottom of the working chamber, the powder supply device paves a working surface thickness The metal powder layer, that is, the working surface is formed, and then the laser system installed on the top of the 3D printer reflects the laser beam to the metal powder layer on the current working surface through the laser galvanometer, and adjusts the deflection angle of the laser galvanometer through the control system , selectively melt the current metal powder layer according to the shape of the current layer slice pattern, so as to complete the processing of the current layer of the component. After the metal powder layer operation of the current slicing pattern is completed, the worktable is lowered by a preset layer height, and the powder supply system lays a metal powder with a preset layer thickness on the workbench, and then the laser system proceeds according to the current layer slicing pattern. Selective melting, repeated processing according to this method, layer by layer superposition operation, and finally a complete molded component is obtained.

However, the light source mechanisms of the 3D printing equipment in the prior art are all fixed fixed-point installations on the printer and cannot be moved in the working room, which greatly limits the size and scale of the 3D printer processing configurations and cannot meet the needs of large-scale components. processing job requirements.

Contents of the invention

In view of this, the purpose of the embodiment of the present application is to provide a control system for 3D printing equipment, which drives the intelligent movement of the light source mechanism through the light source moving device, increases the range of motion of the light source mechanism, thereby increasing the size of the molding component and improving Precision.

In the first aspect, an embodiment of the present application provides a control system for 3D printing equipment, including: 3D printing equipment and a main control device; the 3D printing equipment includes: a light source room, and at least one light source located in the light source room moves device and light source mechanism; the light source moving device includes: a fixed part, a movable part and a moving mechanism; the fixed part is fixedly arranged in the light source chamber; the movable part is movably connected with the fixed part; the moving mechanism It is movably connected with the movable part, and is used to drive the movable part to move on the fixed part; the light source mechanism is installed on the movable part;

The main control device is electrically connected to the moving mechanism and/or the movable part, and is used to issue movement control instructions to the moving mechanism and/or the movable part according to the graphic shape of the current processing layer of the object to be printed , and control the moving mechanism and/or the movable part to move on the fixed part based on the movement control instruction, so that the movable part drives the light source mechanism to move; the movement control instruction at least includes: starting Time, processing sequence and processing path.

With reference to the first aspect, the embodiment of the present application provides a first possible implementation manner of the first aspect, wherein the light source mechanism includes a laser electrically connected to the main control device;

The main control device is also used to generate a laser control instruction carrying the laser output parameters of the laser according to the processing material of the object to be printed; the laser output parameters include: scanning path strength, processing sequence, and processing direction , spot diameter, spot wavelength, processing time and processing power;

The laser is used to emit laser light to the processing material of the object to be printed through the vibrating mirror and the scanning field mirror according to the laser control instruction, so as to complete the processing operation on the printing object.

In combination with the first aspect, the embodiment of the present application provides a second possible implementation of the first aspect, wherein the control system of the 3D printing equipment further includes a first temperature sensing device; the 3D printing equipment further includes : a cooling device and a cooling liquid tank; the light source mechanism also includes: a laser emitting device and an optical fiber cable; the laser emitting device is connected to the laser through the optical fiber cable; the cooling liquid tank is connected to the light source chamber pass; the refrigeration device is used to refrigerate the cooling liquid in the cooling liquid tank;

The first temperature sensing device is used to monitor the temperature data of the laser emitting device and the optical fiber cable located in the light source room, and send the monitored temperature data to the main control device;

The main control device is further configured to, when it is detected that the temperature data is higher than the first preset temperature threshold, increase the cooling temperature of the cooling device and the cooling liquid in the cooling liquid tank in the light source chamber. supply and circulation speed; and, when it is detected that the temperature data is lower than the first set temperature threshold, reduce the refrigeration temperature of the refrigeration device, and the cooling liquid in the cooling liquid tank is in the light source chamber supply and circulation speed.

In combination with the first aspect, this embodiment of the present application provides a third possible implementation of the first aspect, wherein the 3D printing equipment further includes a powder feeding device; the 3D printing equipment further includes a powder feeding device; the feeding The powder device is provided with a first heating device and a second temperature sensing device;

The main control device is also used to generate a powder feeding instruction carrying the powder feeding parameters of the powder feeding device in each processing layer according to the thickness of the current processing layer of the object to be printed; and, according to the trigger operation of the user, Generate a descending instruction for controlling the descending of the powder feeding device; the powder feeding parameters include: rising time and rising height;

The powder feeding device is used to drive the powder feeding piston plate to rise according to the powder feeding instruction; and, to drive the powder feeding device to descend according to the descending instruction;

The second temperature sensing device is used to monitor the temperature data of the powder feeding device, and send the monitored temperature data to the main control device;

The main control device is also used to control the first heating device in the powder feeding device to heat the powder feeding device when it detects that the temperature data in the powder feeding device is lower than the second set temperature threshold , used to preheat the metal powder in the powder feeding device.

In combination with the third possible implementation of the first aspect, this embodiment of the present application provides a fourth possible implementation of the first aspect, wherein the 3D printing equipment further includes: a powder spreading device and a flat powder device;

The main control device is also used to generate a powder spreading instruction for the current layer of the object to be printed when it is detected that the powder feeding device reaches the set powder spreading height;

The powder spreading device is used to lay the metal powder placed on the powder feeding device on the workbench according to the powder spreading instruction;

The main control device is also used to generate a powder leveling instruction for controlling the powder leveling device after detecting that the powder leveling device has finished spreading the powder;

The powder leveling device is used to level the metal powder on the workbench according to the powder leveling instruction.

In combination with the third possible implementation of the first aspect, this embodiment of the present application provides a fifth possible implementation of the first aspect, wherein the 3D printing equipment further includes: a construction chamber and a construction chamber lifting device; A workbench is set in the building room; a third temperature sensing device and a second heating device are respectively set in the building room;

The main control device is also used to generate a job control command carrying the descending height of the construction chamber lifting device according to the thickness of the current processing layer of the object to be printed;

The construction chamber lifting device is used to control the construction chamber to descend to the height of the current layer thickness according to the operation control instruction;

The third temperature sensing device is configured to monitor temperature data in the construction chamber, and send the monitored temperature data to the main control device;

The main control device is also used to control the second heating device in the construction chamber to heat when it is detected that the temperature data in the construction chamber is lower than the third set temperature threshold until the construction chamber is detected. When the indoor temperature data reaches the third preset temperature threshold, the second heating device is controlled to stop heating.

In combination with the fifth possible implementation of the first aspect, the embodiment of the present application provides a sixth possible implementation of the first aspect, wherein the construction chamber lifting device includes a construction chamber piston plate, and the working table is composed of The operation base plate is formed, which is placed on the piston plate of the construction chamber during operation, the fourth temperature sensing device is arranged in the base board, and the third heating device is arranged in the piston plate of the construction chamber;

The fourth temperature sensing device is arranged on the work substrate and located in the workbench, and is used to monitor the temperature data of the workbench, and send the monitored temperature data to the main control device;

The main control device is also used to control the third heating device in the piston plate of the construction chamber to heat up when the monitored temperature data of the workbench is lower than the fourth set temperature threshold, until the detected When the temperature data in the substrate reaches the fourth preset temperature threshold, the third heating device is controlled to stop heating.

In combination with the fifth possible implementation of the first aspect, this embodiment of the present application provides a seventh possible implementation of the first aspect, wherein the control system of the 3D printing equipment further includes an oxygen content detection device; The 3D printing equipment also includes a protective gas supply mechanism; the operating platform is located in the working room, and the protective gas supply mechanism is connected to the light source room, the working room and the construction room;

The oxygen content detection device is used to detect the oxygen content of the light source room, the working room and the construction room, and send the monitored oxygen content to the main control device;

The main control device is also used to control to increase the amount of gas injected by the protective gas supply mechanism into the light source chamber, the working chamber and the construction chamber when the oxygen content is detected to be greater than the set oxygen content threshold. The injection amount of the protective gas; and, when it is detected that the oxygen content is lower than the set oxygen content threshold, control to reduce the injection amount of the protective gas injected into the construction chamber by the protective gas supply mechanism.

In combination with the sixth possible implementation of the first aspect, this embodiment of the present application provides an eighth possible implementation of the first aspect, which further includes particle monitoring equipment; the 3D printing equipment also includes a working room shielding gas Circulation filter equipment:

The particulate matter monitoring device is used to monitor the particulate matter content in the working room, and send the monitored particulate matter content to the main control device;

The main control device is also used for controlling the strength of circulation filtration of the protection gas circulation filter equipment in the working room and switching the working mode of the protection gas circulation filter equipment in the work room according to the particle content.

In combination with the first aspect, the embodiment of the present application provides a ninth possible implementation manner of the first aspect, wherein the control system of the 3D printing equipment further includes at least one mechanical arm electrically connected to the main control device Controller: the 3D printing equipment also includes at least one mechanical arm and a forging hammer, the forging hammer is installed on the mechanical arm; the number of the mechanical arm controller is the same as that of the mechanical arm, one of the The robotic arm controller controls a robotic arm correspondingly;

The main control device is also used to determine the number of mechanical arms to be activated and the second processing parameters of each of the mechanical arms according to the graphic shape and processing material of the current processing layer of the object to be printed, and according to the second Processing parameters, generating a second path control command corresponding to each of the robotic arm controllers; the second processing parameters include: forging sequence, forging path, forging force, forging orientation and forging area;

The robotic arm sub-controller is configured to receive the second path control instruction, and control the movement of the corresponding robotic arm according to the second processing parameter in the second path control instruction, so that the robotic arm drives the forging Hammer work.

A control system for 3D printing equipment provided in an embodiment of the present application includes: 3D printing equipment and a main control device; 3D printing equipment includes: a light source room, at least one light source moving device and a light source mechanism located in the light source room; the light source moving device Including: a fixed part, a movable part and a moving mechanism; the fixed part is fixedly arranged in the light source room; the movable part is movably connected with the fixed part; the moving mechanism is movably connected with the movable part to drive the movable part to move on the fixed part; the light source mechanism is installed On the movable part; the main control device is electrically connected with the moving mechanism and/or the movable part, and is used to issue movement control instructions to the moving mechanism and/or the movable part according to the graphic shape of the current processing layer of the object to be printed, and based on the movement control Instructions control the moving mechanism and/or the movable part to move on the fixed part, so that the movable part drives the light source mechanism to move; in this way, the light source moving device drives the light source mechanism to move intelligently, increasing the range of motion of the light source mechanism, thereby increasing the molding component. size, while improving machining accuracy.

In order to make the above-mentioned purpose, features and advantages of the present application more comprehensible, preferred embodiments will be described in detail below together with the accompanying drawings.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, so It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 shows a schematic structural diagram of a control system of a 3D printing equipment provided by an embodiment of the present application.

Fig. 2 shows a schematic diagram of the overall structure of the light source moving device provided by the embodiment of the present application.

Fig. 3 shows a schematic diagram of the position of the slider on the mother car in the embodiment of the present application.

Figure 4 is a schematic diagram of the overall structure of the cooling device of the embodiment of the present application;

Fig. 5 shows a schematic diagram of the internal structure of the sleeve of the cooling device provided by the embodiment of the present application.

Fig. 6 shows a schematic structural diagram of a 3D printing equipment provided by an embodiment of the present application.

Fig. 7 is a schematic structural diagram of a powder spreading device and a powder feeding device in the 3D printing equipment provided by the embodiment of the present application.

Fig. 8 shows a schematic structural diagram of the building chamber in the 3D printing equipment provided by the embodiment of the present application.

Fig. 9 shows a cross-sectional view of a square building chamber provided with a second heating device and a square powder feeding device provided with a first heating device according to an embodiment of the present application.

Fig. 10 shows a top view of a circular building chamber provided with a second heating device and a circular powder feeding device provided with a first heating device according to an embodiment of the present application.

Fig. 11 shows a cross-sectional view of another circular building chamber equipped with a second heating device and a circular powder feeding device equipped with a first heating device provided by an embodiment of the present application.

Icons: 10-main control device; 30-3D printing device; 301-fixed part; 302-first fixed arm; 303-second fixed arm; 304-third fixed arm; 305-fourth fixed arm; 306-female Car; 307-first mother car arm; 308-second mother car arm; 309-third mother car arm; 310-fourth mother car arm; 311-child car; 312-laser emitting device; 313-first drive Device; 314-first driving part; 315-first driven part; 316-first driving part; 318-slider; 100-cooling device; 110-sleeve; 113-reflux channel; 117-optical fiber cable covering section; 118-laser emitting device covering section; 120-inlet pipe; 130-reflux pipe; 140-refrigerating device; 150-cooling liquid tank; -construction molding device; 2-powder supply system; 3-main platform; 4-working room; 5-powder filling port; 6-remaining powder suction port; Device; 21-powder feeding device; 22-powder spreading device; 23-powder leveling device; 114-substrate; 115-build chamber piston plate; 211-powder feeding cylinder; 212-powder feeding piston plate; 221-powder spreading roller; 231-powder flat piece; 232-powder level drive mechanism; 233-powder collection cylinder; 401, heating layer; 402, heating layer; 403, heat preservation layer; 404, cooling layer; 405, installation layer shelf.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present application.

In the embodiment of the present application, it is responsible for coordinating the data interaction processing of the division of labor among various systems. The main system calibrates the shape of the scanning graphics on the working surface according to the CAD graphics analysis system, and determines the processing road force, processing distance, the lifting height of each layer of the powder feeding piston 213, the lowering height of each layer of the lifting device 13 in the building room, and the work of the forging hammer. The number of layers and forging strength, and the analysis results are transmitted to the main system. The main system sends work instructions to each subsystem according to the scanned data, and coordinates, manages and monitors the working status of each subsystem.

The embodiment of the present application provides a control system for 3D printing equipment 30, as shown in Figure 1, including: 3D printing equipment 30 and a main control device 10; 3D printing equipment 30 includes: a light source room, a light source moving in the light source room The device and the light source mechanism; the light source moving device includes: a fixed part, a movable part and a moving mechanism; the fixed part is fixedly arranged in the light source room; the movable part is movably connected with the fixed part; Move on the fixed part; the light source mechanism is installed on the movable part;

The main control device 10 is configured to issue a movement control instruction to the movement mechanism and/or the movable part according to the graphic shape of the current processing layer of the object to be printed, and control the movement mechanism and/or the movable part based on the movement control instruction Or the movable part moves on the fixed part, so that the movable part drives the light source mechanism to move; the movement control instruction at least includes: start time, processing sequence and processing path.

In this application, the light source moving device may include two structures:

The first intelligent single mobile car structure: the light source moving device includes: a fixed part, a movable part and a moving mechanism; the movable part is slidingly connected to the fixed part; the moving mechanism is connected to the movable part; The connection is used to drive the movable part to move in the circumferential direction relative to the fixed part or drive the movable part to slide linearly or move in the circumferential direction relative to the fixed part; the movable part is used to install the light source mechanism of the 3D printer; the fixed part is fixedly arranged in the light source chamber. As an optional implementation manner, the light source mechanism in the embodiment of the present application is a laser mechanism (that is, the laser emitting device 312 described below).

The light source moving device provided by the embodiment of the present application includes a fixed part, a movable part and a moving mechanism. When in use, the laser mechanism of the 3D printer is installed on the movable part, the fixed part is fixedly arranged in the light source room, and the moving mechanism is electrically connected with the main control device.

When the main control device controls the moving mechanism to drive the movable part to move in the circumferential direction relative to the fixed part, the laser mechanism irradiates the beam to the metal powder layer on the working surface for selective melting during the moving process, and finally completes the forming and manufacturing of the component. manufacture cylindrical components

When the main control device controls the moving mechanism to drive the movable part to slide linearly relative to the fixed part, the moving mechanism drives the movable part to slide linearly relative to the fixed part, and at the same time drives the laser mechanism on the movable part 2 to move along a straight line. The metal powder layer irradiated on the working surface is selectively melted, and finally the forming and manufacturing of the component is completed.

The second type of double moving car structure: the moving mechanism is the mother car 306, and the moving part is the sub-car 311. Figure 2 is a schematic diagram of the overall structure of the light source moving device in the embodiment of the present application. Please refer to FIG. 2 , this embodiment provides a light source moving device, which includes a fixing part 301 , a mother car 306 , a sub-car 311 and a laser emitting device 312 disposed on the sub-car 311 . The mother car 306 is slidably connected to the fixing part 301 and can be driven by the second driving device on the fixing part 301 to move in a first predicted direction relative to the fixing part 301 . The sub-car 311 is slidably connected to the parent car 306 and can be driven by a second driving device on the parent car 306 to move in a second predicted direction relative to the parent car 306 . Therefore, the laser emitting device 312 can move on the motion plane defined by the first predicted direction and the second predicted direction, and has a larger moving range.

In this embodiment, the fixing part 301 has a rectangular frame structure as a whole, which includes a first fixing arm 302 , a second fixing arm 303 , a third fixing arm 304 and a fourth fixing arm 305 forming a rectangular frame. The first fixed arm 302 is parallel to the second fixed arm 303 , and the third fixed arm 304 is parallel to the fourth fixed arm 305 . The first fixed arm 302 and the second fixed arm 303 extend along the first predicted direction, and the third fixed arm 304 and the fourth fixed arm 305 extend along the second predicted direction, so it can be understood that the first predicted direction is perpendicular to the second predicted direction .

FIG. 2 is a schematic diagram of the position of the slider 318 on the mother car 306 in the embodiment of the present application; FIG. 3 is a schematic diagram of the cooperation between the slider 318 and the chute in the embodiment of the present application. Please refer to FIG. 1 to FIG. 3. In this embodiment, the mother car 306 has a rectangular frame structure as a whole, and the mother car 306 includes a first mother car arm 307, a second mother car arm 308 and a third mother car arm. 309 , the fourth female arm 310 ; the outer sides of the first female arm 307 and the second female arm 308 are slidably connected to the inner sides of the first fixed arm 302 and the second fixed arm 303 respectively. In detail, sliders 318 are respectively provided on the outer sides of the first female arm 307 and the second female arm 308, while the inner sides of the first fixed arm 302 and the second fixed arm 303 are respectively provided with sliding blocks extending along the length direction of the fixed arms. A chute (not shown in FIG. 2 ), which cooperates with the slider 318 on the outside of the first female arm 307 and the second female arm 308 . In order to increase the stability of the mother car 306, the slider 318 is configured as a dovetail shape, and the chute is configured as a dovetail groove. It should be understood that the cross section of the slider 318 and the chute is not limited to the dovetail shape, but can be changed in shape as required, for example, the chute is designed as a rectangular groove or a circular groove and is equipped with a correspondingly shaped slider 318; In an example, the sliding connection between the mother car 306 and the fixed part 301 can also be realized by providing a chute on the mother car 306 and a slider on the fixed part 301 .

In this embodiment, in order to reduce the sliding friction force of the mother car 306 relative to the fixed part 301 and make the movement of the mother car 306 more sensitive, two sliders are respectively arranged on the first mother car arm 307 and the second mother car arm 308. Block 318, two slide blocks 318 are respectively arranged at the two ends of the mother car arm of place, like this compared with the longitudinal direction along the first mother car arm 307 (or the second mother car arm 308) arranging strip-shaped slide block , the contact area between the slider 318 and the chute is relatively small. It should be understood that, in other embodiments, the number of slide blocks 318 on the first mother car arm 307 and the second mother car arm 308 can be increased or decreased, and the slider 318 can also be moved along the first mother car arm 307 (or the second mother car arm The lengthwise direction of vehicle arm 308) is set to elongated shape; Even track can be set on the first fixed arm 302 and the second fixed arm 303, pulley is set on the first female vehicle arm 307 and the second female vehicle arm 308, to realize sliding connect.

In this embodiment, the fixing part 301 is provided with two first driving devices 313, and the two first driving devices 313 are respectively arranged on both sides of the fixing part 301 where the first fixing arm 302 and the second fixing arm 303 are located. And at the same time, it is in drive connection with the first mother car arm 307 and the second mother car arm 308 to drive the mother car 306 to move relative to the fixed part 301 in the first predicted direction. It should be understood that, in other embodiments, one first driving device 313 may be provided on the fixing part 301 , or more than two first driving devices 313 may be provided.

In the control system of 3D printing equipment 30 provided in the embodiment of the present application, the main control device 10 determines the number of moving mechanisms and/or movable parts to be activated and the number of moving mechanisms and /or the moving load distance of the movable part, and according to the moving load distance, control the moving mechanism and/or the movable part to move according to the moving load distance, so that the movable part drives the light source mechanism to move, because the light source mechanism moves along the fixed part The range of motion of the laser mechanism can be increased, avoiding the problem of limiting the size of the 3D printer processing configuration parts caused by the limited movement of the laser mechanism, thereby increasing the size of the molding components.

Further, in the control system of the 3D printing equipment 30 provided in the embodiment of the present application, the light source mechanism includes a laser electrically connected to the main control device 10;

The main control device 10 is also used to generate a laser control command carrying the laser output parameters of the laser according to the processing material of the object to be printed; the laser output parameters include: scanning path force, processing sequence, processing direction, Spot diameter, spot wavelength, processing time, processing distance and processing power;

The laser is used to emit laser light to the processing material of the object to be printed according to the laser control instruction.

Here, the main control device 10 is preset with an embedded laser scanning processing control algorithm, and the software determines the scanning path, processing sequence, processing direction, spot diameter, spot wavelength, processing time, processing distance and Laser output parameters such as processing power, and generate laser control instructions for controlling the laser according to the above laser output parameters. The laser itself is also used to report the operation log to the main control device 10, and the main control device 10 coordinates the cooperation between the laser and other control parts according to the operation log.

Further, the control system of the 3D printing equipment 30 provided in the embodiment of the present application also includes a first temperature sensing device; the 3D printing equipment 30 also includes: a cooling device 140 and a cooling liquid tank 150; the light source mechanism also includes: a laser emitting device and Optical fiber cable; the laser emitting device is connected to the laser through the optical fiber cable; the cooling liquid tank 150 is connected to the light source chamber; the cooling device 140 is used to cool the cooling liquid in the cooling liquid tank 150;

The temperature sensing component is used to monitor the temperature data of the laser emitting device and the optical fiber cable located in the light source room, and send the monitored temperature data to the main control device 10;

The main control device 10 is also used to increase the cooling temperature of the cooling device 140 and the supply and circulation speed of the cooling liquid in the cooling liquid tank 150 in the light source chamber when the temperature data is detected to be higher than the first preset temperature threshold; and, When it is detected that the temperature data is lower than the first set temperature threshold, the refrigeration temperature of the refrigeration device 140 and the supply and circulation speed of the cooling liquid in the cooling liquid tank 150 in the light source chamber are reduced.

FIG. 4 is a schematic diagram of the overall structure of the cooling device 100 provided in Embodiment 1 of the present application, and FIG. 2 is a schematic diagram of the internal structure of the sleeve 110 of the cooling device 100 provided in Embodiment 1 of the present application. Please refer to FIG. 4 and in conjunction with FIG. 5, a cooling device 100 is provided in this embodiment, which includes a sleeve 110, which defines an accommodation space; A passage at one end; a plurality of passages are arranged around the axis of the sleeve 110; one end of the passage is an open end, and the other end is a closed end; a partition 111 extending from the open end to the closed end is provided in the passage; the partition 111 separates the passage It is a liquid inlet channel 112 and a return channel 113 in parallel; the partition plate 111 is spaced apart from the closed end to form a communication channel communicating with the liquid inlet channel 112 and the return channel 113 .

In this embodiment, along the axial direction of the sleeve 110, the sleeve 110 includes an optical fiber cable covering section 117 and a laser emitting device covering section 118 connected to each other; the optical fiber cable covering section 117 is made of a flexible material and can bend and swing; The open end is located at the end of the optical fiber cable covering section 117 away from the laser emitting device covering section 118 ; the closed end is located at the end of the laser emitting device away from the optical fiber cable covering section 117 . The sleeve 110 is set to include the interconnected optical fiber cable covering section 117 and the laser emitting device covering section 118, which facilitates the cooling of the optical fiber cable and the laser emitting device that transport the laser light inside the working room 4, so as to improve the optical fiber cable and the laser emitting device. It is difficult for the laser emitting device to dissipate heat, and it is very easy to cause the phenomenon of burning of the optical fiber cable and the laser emitting device for transporting the laser in the working room 4 . The optical fiber cable covering section 117 is designed as a flexible material, which facilitates the movement of the optical fiber cable covering section 117 with the optical fiber cable, realizes real-time cooling of the optical fiber cable, and allows the laser emitting device to move through the bending and swinging of the optical fiber cable in a further Carry out processing operations in a large range, increase the 30 operating area of 3D printing equipment and the volume value of configuration parts.

As shown in Figure 6, it should be noted that in this embodiment, the liquid inlet pipe 120 is provided to facilitate the passage of the cooling medium into the liquid inlet passage 112, and the return pipe 130 is provided to facilitate the discharge of the cooling medium in the return passage 113, and then The flow of the cooling medium in the sleeve 110 is better achieved. It can be understood that in other specific embodiments, according to the needs of users, the liquid inlet pipe 120 and the return pipe 130 may not be provided, and the liquid inlet device and the return discharge device in the prior art may be used.

In this embodiment, the cooling device 100 also includes a refrigeration device 140 and a cooling liquid tank 150; the cooling device 140 is connected to the cooling liquid tank 150 for cooling the liquid in the cooling liquid tank 150; the cooling liquid tank 150 is provided with An interface connected to the return pipe 130 , and a liquid driving device 160 connected to the liquid inlet pipe 120 . A refrigeration device 140 and a cooling liquid tank 150 are provided. During the implementation process, the cooling medium in the cooling liquid tank 150 is refrigerated by the refrigeration device 140, then guided into the liquid inlet channel 112 through the liquid inlet pipe 120, and further flows into the return channel 113, and then flow into the cooling liquid tank 150 through the return pipe 130, and circulate in this way to realize the cooling effect on the optical fiber cable and the laser emitting device. An interface connected to the return pipe 130 and a liquid drive device 160 connected to the liquid inlet pipe 120 are provided on the cooling liquid tank 150 to increase the pressure of the cooling medium, so as to facilitate the cooling of the cooling medium in the liquid inlet channel 112 and the return channel 113. Medium and fast flow for better cooling.

Further, referring to FIG. 6-FIG. 8, in the control system of the 3D printing equipment 30 provided by the embodiment of the present application, the 3D printing equipment 30 also includes a powder feeding device 21; the powder feeding device 21 is provided with a first heating device and a second heating device. temperature sensing device;

The main control device 10 is also used to generate a powder feeding instruction carrying the powder feeding parameters of the powder feeding device 21 in each processing layer according to the thickness of the current processing layer of the object to be printed; The descending command used to control the descending of the powder feeding device 21; the powder feeding parameters include: rising time and rising height;

The powder feeding device 21 is used to drive the powder feeding piston plate to rise according to the powder feeding instruction; and to drive the powder feeding device to descend according to the descending instruction;

The second temperature sensing device is used to monitor the temperature data of the powder feeding device, and send the monitored temperature data to the main control device 10;

The main control device 10 is also used to control the first heating device in the powder feeding device 21 to heat the powder feeding device when it is detected that the temperature data in the powder feeding device 21 is lower than the second set temperature threshold.

Here, the powder feeding device 21 includes two powder feeding assemblies; each powder feeding assembly includes a powder feeding cylinder 211, a powder feeding piston 213, and a powder feeding piston plate 212; mineral powder;

In the embodiment of the present application, both the inner wall of the powder feeding cylinder 211 and the powder feeding piston plate 212 are provided with a second temperature sensing device and a first heating device, and both the second temperature sensing device and the first heating device are connected with the main control device 10 Electrically connected, the temperature data in the powder feeding cylinder 211 and the powder feeding piston plate 212 are monitored by the second temperature sensing device, and the monitored temperature data is sent to the main control device 10; the main control device 10 detects the powder feeding cylinder 211 and When the temperature data in the powder feeding piston plate 212 is lower than the second set temperature threshold, the first heating device in the powder feeding device 21 is controlled to heat the powder feeding cylinder 211 and the powder feeding piston plate 212 .

Further, in the control system of the 3D printing equipment provided in the embodiment of the present application, the 3D printing equipment 30 also includes: a powder spreading device 22 and a flat powder device 23;

The main control device 10 is also used to generate a powder spreading instruction for the current layer of the object to be printed when it is detected that the powder feeding device 21 has reached the set powder spreading height;

The powder spreading device 22 is used to lay the metal powder placed on the powder feeding device 21 on the workbench according to the powder spreading instruction;

The main control device 10 is also used to generate a powder leveling instruction for controlling the powder leveling device 23 after detecting that the powder leveling device 22 has finished spreading the powder;

The powder leveling device 23 is used to level the metal powder on the workbench according to the powder leveling instruction.

The overall structure of the powder feeding device 21, the powder spreading device 22 and the flat powder device 23 in the 3D printing equipment 30 in the embodiment of the present application will be introduced below in conjunction with Figs. 6-8:

The 3D printing equipment 30 includes a component forming device and a powder supply system 2. The component forming device includes a working table 11. The powder supply system 2 includes a powder spreading device 22 and a powder feeding device 21. The powder spreading device 22 includes a powder spreading roller driving mechanism and two Powder spreading rollers 221 , the two powder spreading rollers 221 are oppositely arranged at the first end and the second end of the working platform 11 . When working, the powder spreading roller driving mechanism drives two powder spreading rollers 221 to reciprocate above the workbench 11 at the same time, so as to lay the metal powder in the powder feeding device 21 on the workbench 11 .

In the 3D printing equipment 30 provided in the embodiment of the present application, during the powder spreading, the two powder spreading rollers 221 work at the same time, and lay the metal powder in the powder feeding device 21 on the workbench 11 at the same time, which improves the powder spreading efficiency. Especially when working on a large-sized working surface, the work efficiency is improved, and it can be used to form large-sized components with a length, width, and height ≥ 600mm, which has solved the problem that has seriously restricted the promotion and application of this process technology worldwide for more than 30 years. worldwide problem. At the same time, when the powder spreading roller 221 lays the metal powder on the workbench 11, it rolls the metal powder. The powder layer is denser, which plays an important role in improving the overall density and surface finish of the formed component.

Wherein, the driving mechanism of the powder spreading roller can drive the two powder spreading rollers 221 to move in the same direction at the same time, and can also drive the two powder spreading rollers 221 to move in the opposite direction at the same time. Preferably, the powder spreading roller driving mechanism is used to drive the two powder spreading rollers 221 to move in opposite directions at the same time. That is, before the operation, the two powder spreading rollers 221 are located at the two ends of the workbench 11 respectively, and during operation, the powder spread roller driving mechanism drives the two powder spread rollers 221 to move to the center of the workbench 11 at the same time. This can greatly improve the powder spreading efficiency.

On the basis of the above embodiments, further, the powder feeding device 21 includes two powder feeding assemblies; each powder feeding assembly includes a powder feeding cylinder 211, a powder feeding piston 213 and a powder feeding piston plate 212; two powder feeding cylinders 211 are respectively arranged on the first end and the second end of the working table 11; the powder feeding piston plate 212 is arranged in the powder feeding cylinder 211, and the powder feeding piston 213 is connected with the powder feeding piston plate 212, which is used to drive the powder feeding piston plate 212 up and down Move; the powder feeding piston plate 212 is used to place the metal powder required for the operation. Wherein, powder is added through the powder filling port 5 in FIG. 6 , and the remaining powder is sucked out through the remaining powder suction port 6 .

In this embodiment, the two powder feeding cylinders 211 are respectively arranged at the first end and the second end of the workbench 11, and the driving mechanism of the powder spreading roller 221 drives the two powder spreading rollers 221 to move, and the powder spreading roller 221 moves toward the workbench 11 At this time, the powder spreading roller 221 pushes the metal powder in the powder feeding cylinder 211 onto the workbench 11, thereby laying the metal powder on the workbench 11. The selective laser melting mechanism selectively melts the metal powder layer on the workbench 11. Then, the workbench 11 in the powder spreading device 22 moves down to a preset height, and the two powder spreading rollers 221 return to their original positions. The powder feeding piston 213 in the cylinder 211 drives the powder feeding piston plate 212 to move upwards, so that the metal powder on the powder feeding piston plate 212 moves up to a preset height, and the two powder spreading rollers 221 move to the workbench 11 again, and the feeding The metal powder in the powder cylinder 211 is pushed onto the workbench 11, and the laser selective melting mechanism selectively melts the metal powder layer on the workbench 11 again. Then, the workbench 11 descends again, and the powder feeding piston plate 212 rises again, in this cycle, finally laying the metal powder with a preset thickness on the workbench 11 .

In this embodiment, the powder feeding device 21 is set as two powder feeding assemblies, and the two powder feeding cylinders 211 are respectively arranged at the first end and the second end, that is, one powder spreading roller 221 is correspondingly provided with one powder feeding cylinder 211 , so that the powder feeding roller can quickly lay the metal powder in the powder feeding cylinder 211 on the workbench 11, further improving work efficiency.

Figure 9 shows a cross-sectional view of a square building chamber with a second heating device and a square powder feeding device with a first heating device. The powder feeding cylinder 211 is a square schematic diagram. Between the two powder feeding cylinders 211 To construct the chamber 12, wherein each powder feeding cylinder 211 includes a multi-layer structure, wherein the vertical wall of the powder feeding cylinder 211 is respectively a heating layer 401, a heating layer 402, an insulating layer 403, a cooling layer 404 and an installation layer from the inside to the outside. Shelf 405; wherein, the first heating device is arranged on the heating layer, and the heat generated by the first heating device is transferred to the metal powder in the powder feeding cylinder 211 through the heating layer 401 to preheat the metal powder. The function of the insulation layer 403 is to mortgage the heat generated by the heating device into the first layer, so as to better preheat the metal powder in the powder feeding cylinder 211 . The function of the cooling layer 404 is to lower the temperature of the layer so that the staff can approach and contact the powder feeding cylinder 211 and operate the powder feeding cylinder 211; specifically, the cooling layer can be realized by a cooling device and a cooling liquid. cool down.

At the same time, a powder feeding piston plate 212 is arranged inside the powder feeding cylinder 211, and the powder feeding piston plate 212 is also a multi-layer structure, which consists of a heating layer 401, a heating layer 402, an insulating layer 403, a cooling layer 404 and a heating layer from top to bottom. The layer frame 405 is installed; in the same way, the powder feeding piston plate 212 also includes a first heating device, which is also arranged on the heating layer of the powder feeding piston plate 212, and the heat generated by the heating of the first heating device passes through the heating layer 401 is passed to the metal powder in the powder feeding piston plate 212 to preheat the metal powder. The function of the insulation layer 403 is to mortgage the heat generated by the heating device into the first layer, so as to better preheat the metal powder on the powder feeding piston plate 212 . The function of the cooling layer 404 is to lower the temperature of the layer so that the staff can approach and contact the powder feeding cylinder 211 and operate the powder feeding cylinder 211; specifically, the cooling layer can be realized by a cooling device and a cooling liquid. cool down.

Figure 10 shows a top view of a circular building chamber with a second heating device and a circular powder feeding device with a first heating device, and the building chamber 12 is between the two powder feeding cylinders 211. In Figure 10, The inner wall 503 of the powder feeding cylinder is a multi-layer structure, which is sequentially composed of a heating layer 401, a heating layer 402, a thermal insulation layer 403, a cooling layer 404 and an installation shelf 405 from the center of the circle to the outside; the outer wall 504 of the powder feeding cylinder is a multi-layer structure, which consists of Outward from the center of the circle are the heating layer 401 , the heating layer 402 , the heat preservation layer 403 , the cooling layer 404 and the installation layer frame 405 . Moreover, a powder feeding piston plate 212 is arranged between the powder feeding cylinder inner wall 503 and the powder feeding cylinder outer wall 504. The powder feeding piston plate 212 is also a multi-layer structure, and it is a heating layer 401 and a heating layer 402 from top to bottom. , insulation layer 403, cooling layer 404 and installation shelf 405.

Wherein, the multilayer structure of the inner wall 503 of the powder feeding cylinder, the outer wall 504 of the powder feeding cylinder and the powder feeding piston plate 212 is shown in FIG. 11 .

On the basis of the above embodiments, further, the powder supply system 2 also includes a powder leveling device 23; the powder leveling device 23 includes a powder leveling part 231, a powder leveling part driving mechanism 232 and two powder collecting cylinders 233; Square shape; two powder collecting cylinders 233 are respectively arranged on the third end and the fourth end opposite to the workbench 11, and are used to store the excess powder after the flat powder part 231 is smoothed on the workbench 11; The component 231 is connected to drive the powder leveling component 231 to reciprocate between the two powder collecting cylinders 233 to smooth the metal powder on the workbench 11 .

The working process of the powder leveling device 23 is as follows. After the powder spreading roller 221 lays the metal powder in the powder feeding cylinder 211 at the preset height of the workbench 11, the powder leveling drive mechanism 232 drives the powder leveling component 231 in the two powder collecting cylinders 233 Move back and forth between them, the flat powder part 231 smoothes the metal powder on the workbench 11, and the redundant metal powder moves with the flat powder part 231, and finally falls into the powder collection cylinder 233 for collection. That is, when the flat powder member 231 moves from the third end to the fourth end, excess metal powder falls into the powder collecting cylinder 233 at the fourth end. When the flat powder member 231 moves from the fourth end to the third end, excess metal powder falls into the powder collecting cylinder 233 at the third end.

In this embodiment, the setting of the flat powder part 231 can smooth the metal powder on the workbench 11, so that the metal powder layer on the workbench 11 is smoother, and then the laser selective melting mechanism can selectively melt the metal powder layer The formed components are more refined and standard. A powder collecting cylinder 233 is arranged respectively at the third end and the fourth end of the workbench 11, and two powder spreading rollers 221 are respectively arranged at the first end and the second end of the workbench 11, such arrangement can make the structure compact, Reduced footprint. The setting positions of the two powder collecting cylinders 233 can fully receive the redundant metal powder when the flat powder part 231 is working, so as to prevent the metal powder from falling outside.

Wherein, the flat powder part 231 can be a flat powder board, a flat powder block, or a flat powder brush. Preferably, the flat powder member 231 is a flat powder brush, which evenly acts on the metal powder layer, so that the effect of smoothing the metal powder layer is the best.

On the basis of the above-mentioned embodiments, further, the powder flattening part driving mechanism 232 includes a powder flattening motor, a gear and a rack matched with the gear; the gear is arranged on the power output shaft of the powder flattening motor; the powder flattening part 231 is fixed on On the rack; the flat powder motor is used to drive the rack to reciprocate through the gear.

In this embodiment, the powder leveling drive mechanism 232 is set as a powder leveling motor, a gear and a rack. The powder-flat driving motor 304 drives the gear forward and backward, and the gear drives the rack to move forward and reversely, thereby driving the powder-flat component 231 to move back and forth. Simple structure and convenient operation.

Further, in the control system of the 3D printing equipment 30 provided in the embodiment of the present application, the 3D printing equipment 30 also includes: a building room 12 and a building room lifting device 13; the building room lifting device 13 is connected to the operation table 11; the operation table 11 is set In the construction chamber 12; the operating platform 11 is provided with a working substrate 114; the construction chamber 12 is respectively provided with a third temperature sensing device and a second heating device;

The main control device 10 is also used to generate a job control instruction carrying the descending height of the construction chamber lifting device 13 according to the thickness of the current processing layer of the object to be printed;

The construction chamber lifting device 13 is used to control the construction chamber 12 to descend to the height of the current layer thickness according to the operation control instruction.

The third temperature sensing device is used to monitor the temperature data in the construction chamber 12, and send the monitored temperature data to the main control device 10;

The main control device 10 is also used to control the second heating device in the construction chamber 12 to heat when the monitored temperature data in the construction chamber 12 is lower than the third set temperature threshold, until the temperature in the construction chamber 12 is detected When the temperature data reaches the third preset temperature threshold, the second heating device is controlled to stop heating.

Specifically, the temperature in the construction chamber 12 should be kept at a certain temperature, the purpose is to effectively control the stress effect of the molding construction, so that the third temperature sensing device and the second heating device are set in the construction chamber 12, the embodiment of the present application In the construction chamber 12, the inner wall and the outer wall are provided with a third temperature sensing device, the temperature data of the main control device 10 in the construction chamber wall is less than the third set temperature threshold, and the second heating device is started to monitor the temperature in the construction chamber wall. Heating; and the temperature data of the main control device 10 in the wall of the building room is greater than the fifth set temperature threshold, start the cooling device to cool the wall of the building room, so that the staff can approach the building room 12, and the building room 12 The molded builds are monitored and removed from the build chamber 12 .

Further, in the control system of 3D printing equipment provided by the embodiment of the present application, the construction chamber lifting device 13 includes a construction chamber piston plate 115, and the operation table is composed of a base plate 114 (i.e., an operation base plate), which is placed on the base plate during operation. On the piston plate 115 of the construction chamber, a fourth temperature sensing device is arranged in the substrate 114, and a third heating device is arranged in the piston plate 115 of the construction chamber;

The fourth temperature sensing device is arranged on the work substrate and located in the workbench 11, and is used to monitor the temperature data of the workbench, and send the monitored temperature data to the main control device 10;

The main control device 10 is also used to control the third heating device in the piston plate 115 of the building chamber to heat until the temperature in the substrate 114 is monitored when the temperature data of the workbench 11 is detected to be lower than the fourth set temperature threshold. When the data reaches the fourth set temperature threshold, the third heating device is controlled to stop heating.

Here, the molding construction is placed in the construction chamber 12. Usually, the outer wall of the newly completed molding member is surrounded by powder. Whenever a member of a processing layer is molded, the molding member maintains a certain temperature. At this time, if the construction chamber lifts The lower the temperature of the device 13, the lower the temperature of the powder surrounding the molded component will absorb the temperature of the molded component, thereby increasing the stress response of the molded component.

Therefore, a fourth temperature sensing device is provided in the substrate 114, and a third heating device is provided in the piston plate 115 of the construction chamber, and the temperature data inside the substrate 114 is sensed by the fourth temperature sensing device. When the temperature data inside 114 is lower than the fourth set threshold, control the third heating device in the piston plate 115 of the building chamber to heat until the temperature data in the substrate 114 reaches the fourth set temperature threshold, control the first Four heating devices stop heating. In this way, the temperature of the formed component can be better held, and the stress effect of the formed component can be effectively controlled.

Wherein, the first heating device, the second heating device, the third heating device and the fourth heating device (hereinafter referred to as the heating device) may be resistance wire heating, infrared heating or the like. When the heating device is heated by a resistance wire, the resistance wire can evenly cover the inner wall of the construction chamber 12 and the like, and the resistance wire heats the inner wall of the construction chamber 12 after being energized.

In addition, the above-mentioned first temperature threshold to the fifth set threshold may be the same or different. In the embodiment of the present application, the first temperature threshold to the fifth set threshold are all different, and the specific temperature values of the first temperature threshold to the fifth set threshold are set according to specific printed items.

As shown in Figure 7 and Figure 8, on the basis of the above-mentioned embodiments, further, the construction molding device 1 includes a construction chamber 12 and a construction chamber lifting device 13; a working table 11 is arranged in the construction chamber 12; Connected with the workbench 11, it is used to drive the workbench 11 to move up and down; the outer wall of the construction chamber 12 is provided with a pick-up port; the pick-up port is provided with a pick-up switch; the pick-up switch is used to open or close the pick-up port.

In this embodiment, after a metal powder layer is laid on the workbench 11, the laser selective melting mechanism selectively melts the metal powder layer on the workbench 11, and then, the construction room lifting device 13 drives the workbench 11 to move downward for a while. set height. The powder spreading roller 221 continues to lay the metal powder layer of this height on the workbench 11, and the laser selective melting mechanism selectively melts the metal powder layer on the workbench 11, and this cycle is used to finally form a component. Then, the user turns on the pick-up switch on the outer wall of the building chamber 12, so that the pick-up port is opened. Finally, the components are taken out from the pick-up port to complete the work.

Figure 9 shows a cross-sectional view of a square building chamber with a second heating device and a square powder feeding device with a first heating device. Two powder feeding cylinders 211 are respectively arranged on both sides of the building chamber 12, wherein the construction The chamber 12 includes a multi-layer structure, wherein, the vertical wall of the construction chamber 12 is respectively a heating layer 401, a heating layer 402, an insulating layer 403, a cooling layer 404 and an installation shelf 405 from inside to outside; wherein, the second heating device is arranged on the heating layer The heat generated by the heating device is transferred to the metal powder in the build chamber 12 through the heat receiving layer 401 to preheat the metal powder. The function of the insulation layer 403 is to mortgage the heat generated by the heating device into the first layer, so as to better preheat the metal powder in the construction chamber 12 . The function of the cooling layer 404 is to lower the temperature of the layer, so that the staff can approach, contact and operate the construction chamber 12; specifically, the cooling layer can be cooled by a cooling device and a cooling liquid.

Simultaneously, a construction chamber piston plate 115 is provided inside the construction chamber 12, and the construction chamber piston plate 115 is also a multi-layer structure, which is successively a heating layer 401, a heating layer 402, an insulating layer 403, a cooling layer 404 and an installation layer from top to bottom. Shelf 405; Similarly, the construction chamber piston plate 115 also includes a second heating device, the first heating device is also arranged on the heating layer of the construction chamber piston plate 115, and the heat generated by the second heating device passes through the heat receiving layer 401 Transfer to the build build in the build chamber piston plate 115 to preheat the build build. The function of the insulation layer 403 is to mortgage the heat generated by the heating device into the first layer, so as to better preheat the metal powder on the piston plate 115 of the building chamber. The function of the cooling layer 404 is to lower the temperature of the layer, so that the staff can approach, contact and operate the construction chamber 12; specifically, the cooling layer can be cooled by a cooling device and a cooling liquid.

Figure 10 shows a top view of a circular building chamber with a second heating device and a circular powder feeding device with a first heating device, and Figure 11 shows another embodiment of the present application provided with a first heating device. The cross-sectional view of the circular building chamber of the second heating device and the circular powder feeding device deployed with the first heating device, wherein the wall 501 of the building chamber is a multi-layer structure, and it is the heating layer 401 and the heating layer 402 from the center of the circle to the outside. , thermal insulation layer 403, cooling layer 404 and installation layer frame 405; build outdoor wall 502 is a multi-layer structure, and it is heating layer 401, heating layer 402, insulation layer 403, cooling layer 404 and installation layer frame 405 successively from the center of circle outward . Moreover, a construction chamber piston plate 115 is arranged between the construction chamber wall 501 and the construction chamber exterior wall 502, and the construction chamber piston plate 115 is also a multi-layer structure, which consists of a heat receiving layer 401, a heating layer 402, and a heat preservation layer from top to bottom. Level 403, cooling level 404 and mounting level frame 405.

Wherein, the multilayer structure of the inner wall 501 of the building chamber, the outer wall 502 of the building chamber and the piston plate 115 of the building chamber is shown in FIG. 11 .

Further, the control system of the 3D printing equipment 30 provided in the embodiment of the present application also includes an oxygen content detection device; the 3D printing equipment 30 also includes a protective gas supply mechanism; the operation platform 11 is located in the operation room 4, and the protective gas supply mechanism It communicates with the light source room, the work room 4 and the construction room 12;

Oxygen content detection equipment, used to detect the oxygen content of the light source room, the working room 4 and the construction room 12, and send the monitored oxygen content to the main control device 10;

The main control device 10 is also used to control and increase the injection amount of the protective gas injected into the light source chamber, the working chamber 4 and the construction chamber 12 by the protective gas supply mechanism when the monitored oxygen content is greater than the set oxygen content threshold; and, When it is detected that the oxygen content is lower than the set oxygen content threshold, the injection amount of the protective gas injected into the build chamber 12 by the protective gas supply mechanism is controlled to be reduced.

Further, the control system of the 3D printing equipment 30 provided in the embodiment of the present application also includes particle monitoring equipment; the 3D printing equipment 30 also includes the working room 4 protection gas circulation filter equipment:

Particle monitoring equipment, used to monitor the particle content in the working room 4, and send the monitored particle content to the main control device 10;

The main control device 10 is also used to control the intensity of circulation filtration of the protection gas circulation filter equipment in the working room 4 and switch the working mode of the protection gas circulation filter equipment in the work room 4 according to the particle content.

Further, the control system of the 3D printing equipment 30 provided in the embodiment of the present application also includes at least one mechanical arm controller electrically connected to the main control device 10: the 3D printing equipment 30 also includes at least one mechanical arm and a forging hammer, so The forging hammer is installed on the mechanical arm; the number of the mechanical arm controller is the same as that of the mechanical arm, and one mechanical arm controller controls one mechanical arm correspondingly;

The main control device 10 is also used to determine the number of robotic arms 301 to be activated and the second processing parameters of each robotic arm 301 according to the graphic shape and processing material of the current processing layer of the object to be printed, and according to the second processing parameters to generate a second path control command corresponding to each robotic arm controller 20; the second processing parameters include: forging sequence, forging path, forging strength, forging orientation and forging area;

The robotic arm controller 20 is configured to receive the second path control instruction, and control the movement of the corresponding robotic arm 301 according to the second processing parameters in the second path control instruction, so that the robotic arm 301 drives the forging hammer to work.

Specifically, the forging hammer is detachably connected to the mechanical arm 301; the driving device and the first rotating device are both electrically connected to the control system of the 3D printer.

In this embodiment, the forging hammer is detachably connected to the mechanical arm 301 , which is convenient for installing different types of forging hammers according to different needs of users, and at the same time, it is convenient for users to replace or repair the forging hammers during use.

In the embodiment, the type of the forging hammer is not limited, and forging hammers of different shapes can be used in different use environments according to the needs of users, thereby increasing the range of use of the forging hammer.

The first rotating device drives the mechanical arm 301 to rotate vertically relative to the fixed seat 302 , so that the mechanical arm 301 drives the forging hammer to extend or retract toward the fixed seat 302 . In this way, the mechanical arm 301 can drive the forging hammer to forge and cast the products manufactured by the 3D printer, making the internal structure of the product more dense, and greatly reducing the volume change caused by thermal expansion and contraction. Furthermore, forging and casting the product with a forging hammer can greatly eliminate the internal stress of the product, so that the product is not easily deformed due to internal stress, and the product quality is greatly improved.

In this embodiment, the forging hammer is arranged on the second sub-arm, so that the forging hammer can rotate vertically. Through the simultaneous use of the first sub-arm and the second sub-arm, the range of vertical rotation of the mechanical arm can be larger, the range of moving positions of the forging and casting hammer can be wider, and the hammering force can be increased.

In the embodiments provided in this application, it should be understood that the disclosed devices and methods may be implemented in other ways. The device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some communication interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments provided by the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes. .

It should be noted that like numerals and letters denote similar items in the following drawings, therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings, In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

Finally, it should be noted that: the above-described embodiments are only specific implementations of the application, used to illustrate the technical solutions of the application, rather than limiting it, and the scope of protection of the application is not limited thereto, although referring to the aforementioned The embodiment has described this application in detail, and those of ordinary skill in the art should understand that any person familiar with this technical field can still modify the technical solutions described in the foregoing embodiments within the technical scope disclosed in this application Changes can be easily imagined, or equivalent replacements can be made to some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application. All should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be determined by the protection scope of the claims.

Claims (10)

1. A control system for 3D printing equipment, characterized in that it includes: 3D printing equipment and a main control device; the 3D printing equipment includes: a light source room, at least one light source moving device and a light source mechanism located in the light source room ; The light source moving device includes: a fixed part, a movable part and a moving mechanism; the fixed part is fixedly arranged in the light source chamber; the movable part is movably connected to the fixed part; The part is movably connected, and is used to drive the movable part to move on the fixed part; the light source mechanism is installed on the movable part; The main control device is electrically connected to the moving mechanism and/or the movable part, and is used to issue movement control instructions to the moving mechanism and/or the movable part according to the graphic shape of the current processing layer of the object to be printed , and control the moving mechanism and/or the movable part to move on the fixed part based on the movement control instruction, so that the movable part drives the light source mechanism to move; the movement control instruction at least includes: starting Time, processing sequence and processing path. 2. The control system of 3D printing equipment according to claim 1, wherein the light source mechanism includes a laser electrically connected to the main control device; The main control device is also used to generate a laser control instruction carrying the laser output parameters of the laser according to the processing material of the object to be printed; the laser output parameters include: scanning path strength, processing sequence, and processing direction , spot diameter, spot wavelength, processing time and processing power; The laser is used to emit laser light to the processing material of the object to be printed through the vibrating mirror and the scanning field mirror according to the laser control instruction, so as to complete the processing operation on the printing object. 3. The control system of 3D printing equipment according to claim 1, further comprising a first temperature sensing device; said 3D printing equipment further comprising: a cooling device and a cooling liquid tank; said light source mechanism further comprising: A laser emitting device and an optical fiber cable; the laser emitting device is connected to the laser through the optical fiber cable; the cooling liquid tank communicates with the light source chamber; cooling liquid for refrigeration; The first temperature sensing device is used to monitor the temperature data of the laser emitting device and the optical fiber cable located in the light source room, and send the monitored temperature data to the main control device; The main control device is further configured to, when it is detected that the temperature data is higher than the first preset temperature threshold, increase the cooling temperature of the cooling device and the cooling liquid in the cooling liquid tank in the light source chamber. supply and circulation speed; and, when it is detected that the temperature data is lower than the first set temperature threshold, reduce the refrigeration temperature of the refrigeration device, and the cooling liquid in the cooling liquid tank is in the light source chamber supply and circulation speed. 4. The control system of 3D printing equipment according to claim 1, wherein the 3D printing equipment further comprises a powder feeding device; the powder feeding device is provided with a first heating device and a second temperature sensing device; The main control device is also used to generate a powder feeding instruction carrying the powder feeding parameters of the powder feeding device in each processing layer according to the thickness of the current processing layer of the object to be printed; and, according to the trigger operation of the user, Generate a descending instruction for controlling the descending of the powder feeding device; the powder feeding parameters include: rising time and rising height; The powder feeding device is used to drive the powder feeding piston plate to rise according to the powder feeding instruction; and, to drive the powder feeding device to descend according to the descending instruction; The second temperature sensing device is used to monitor the temperature data of the powder feeding device, and send the monitored temperature data to the main control device; The main control device is also used to control the first heating device in the powder feeding device to heat the powder feeding device when it detects that the temperature data in the powder feeding device is lower than the second set temperature threshold , used to preheat the metal powder in the powder feeding device. 5. The control system of 3D printing equipment according to claim 4, characterized in that, the 3D printing equipment further comprises: a powder spreading device and a flat powder device; The main control device is also used to generate a powder spreading instruction for the current layer of the object to be printed when it is detected that the powder feeding device reaches the set powder spreading height; The powder spreading device is used to lay the metal powder placed on the powder feeding device on the workbench according to the powder spreading instruction; The main control device is also used to generate a powder leveling instruction for controlling the powder leveling device after detecting that the powder leveling device has finished spreading the powder; The powder leveling device is used to level the metal powder on the workbench according to the powder leveling instruction. 6. The control system of 3D printing equipment according to claim 4, characterized in that, the 3D printing equipment further comprises: a building room and a lifting device for the building room; a working table is arranged in the building room; A third temperature sensing device and a second heating device are provided; The main control device is also used to generate a job control command carrying the descending height of the construction chamber lifting device according to the thickness of the current processing layer of the object to be printed; The construction chamber lifting device is used to control the construction chamber to descend to the height of the current layer thickness according to the operation control instruction; The third temperature sensing device is configured to monitor temperature data in the construction chamber, and send the monitored temperature data to the main control device; The main control device is also used to control the second heating device in the construction chamber to heat when it is detected that the temperature data in the construction chamber is lower than the third set temperature threshold until the construction chamber is detected. When the indoor temperature data reaches the third preset temperature threshold, the second heating device is controlled to stop heating. 7. The control system of 3D printing equipment according to claim 6, characterized in that, the lifting device of the building chamber comprises a piston plate of the building chamber, and the workbench is composed of a working substrate, which is placed on the building On the piston plate of the chamber, a fourth temperature sensing device is arranged in the substrate, and a third heating device is arranged in the piston plate of the construction chamber; The fourth temperature sensing device is arranged on the work substrate and located in the workbench, and is used to monitor the temperature data of the workbench, and send the monitored temperature data to the main control device; The main control device is also used to control the third heating device in the piston plate of the construction chamber to heat up when the monitored temperature data of the workbench is lower than the fourth set temperature threshold, until the detected When the temperature data in the substrate reaches the fourth preset temperature threshold, the third heating device is controlled to stop heating. 8. The control system of 3D printing equipment according to claim 6, characterized in that it also includes an oxygen content detection device; the 3D printing equipment also includes a protective gas supply mechanism; the operating table is located in the operating room, and the The protective gas supply mechanism communicates with the light source room, the working room and the construction room; The oxygen content detection device is used to detect the oxygen content of the light source room, the working room and the construction room, and send the monitored oxygen content to the main control device; The main control device is also used to control to increase the amount of gas injected by the protective gas supply mechanism into the light source chamber, the working chamber and the construction chamber when the oxygen content is detected to be greater than the set oxygen content threshold. The injection amount of the protective gas; and, when it is detected that the oxygen content is lower than the set oxygen content threshold, control to reduce the injection amount of the protective gas injected into the construction chamber by the protective gas supply mechanism. 9. The control system of 3D printing equipment according to claim 7, characterized in that it also includes particle monitoring equipment; the 3D printing equipment also includes working room protection gas circulation filtering equipment: The particulate matter monitoring device is used to monitor the particulate matter content in the working room, and send the monitored particulate matter content to the main control device; The main control device is also used for controlling the strength of circulation filtration of the protection gas circulation filter equipment in the working room and switching the working mode of the protection gas circulation filter equipment in the work room according to the particle content. 10. The control system of 3D printing equipment according to claim 1, further comprising at least one mechanical arm controller electrically connected to the main control device: the 3D printing equipment further comprising at least one mechanical arm and a forging hammer, the forging hammer is installed on the mechanical arm; the number of the mechanical arm controller is the same as that of the mechanical arm, and one mechanical arm controller controls one mechanical arm correspondingly; The main control device is also used to determine the number of mechanical arms to be activated and the second processing parameters of each of the mechanical arms according to the graphic shape and processing material of the current processing layer of the object to be printed, and according to the second Processing parameters, generating a second path control command corresponding to each of the robotic arm controllers; the second processing parameters include: forging sequence, forging path, forging force, forging orientation and forging area; The robotic arm sub-controller is configured to receive the second path control instruction, and control the movement of the corresponding robotic arm according to the second processing parameter in the second path control instruction, so that the robotic arm drives the forging Hammer work.