CN209381392U - Additive manufacturing feeding equipment - Google Patents

Abstract

The utility model discloses a kind of increasing material manufacturing feeder apparatus, including control mechanism, melting mechanism and drawing mechanism；Melt mechanism, the melting mechanism includes the region fusion for placing solid state feed stock, the melting mechanism further includes the storage areas for storing the liquid starting material after solid state feed stock melting, and solid state feed stock is dissolved into after liquid starting material from field flow orientation storage areas fusion after the melting mechanism heats；Drawing mechanism is conveyed to corresponding nozzle for extracting the melting liquid starting material within the organization again；Control mechanism controls the melting mechanism and the drawing mechanism for sending control instruction, and collects the temperature information of the melting mechanism.The utility model structure is simple, and anti-blocking ability is strong.

Description

Additive manufacturing feeding equipment

technical field

The utility model relates to the technical field of additive manufacturing, in particular to a feeding equipment for additive manufacturing.

Background technique

Additive manufacturing technology, commonly known as 3D printing, integrates computer-aided design, material processing and forming technology, and is based on digital model files. Through software and numerical control system, special metal materials, non-metal materials and medical biological materials are processed according to extrusion, Sintering, melting, light curing, spraying, etc. are accumulated layer by layer to create a manufacturing technology for physical objects. Compared with the traditional processing mode of raw material removal, cutting, and assembly, this technology can realize the automatic processing and manufacturing of complex structural parts.

At present, the MJM technology of additive manufacturing usually uses paraffin wax as the raw material for molding processing. During the molding process, the paraffin wax needs to change from solid to liquid, and then transported to the corresponding nozzle for injection. However, the existing technology simply heats the solid paraffin to form liquid paraffin and transmits it to the corresponding nozzle. The liquid paraffin is easy to condense during the transmission process, which will cause the pipeline to be blocked, and even the nozzle to be blocked.

Utility model content

The purpose of the utility model is to provide an anti-clogging additive manufacturing feeding device which is convenient for cleaning and maintenance and has low production cost.

The technical scheme of a kind of additive manufacturing feeding equipment disclosed by the utility model is:

A material feeding device for additive manufacturing, including a control mechanism, a melting mechanism and an extraction mechanism.

The melting mechanism includes an area to be melted for placing solid raw materials, and the melting mechanism also includes a storage area for storing liquid raw materials after melting the solid raw materials. After the melting mechanism is heated, the solid raw materials are dissolved into liquid raw materials and released Area flows to storage area.

The extracting mechanism is used to extract the liquid raw material in the melting mechanism and deliver it to the corresponding nozzle.

The control mechanism is used to send control instructions to control the melting mechanism and the extraction mechanism, and collect temperature information of the melting mechanism.

As a preferred solution, the melting mechanism includes a cylinder body, the cylinder body is made of a heat-conducting material, and the entire cylinder body generates heat when heated, and an opening is provided on the upper surface of the cylinder body.

As a preferred solution, the melting mechanism also includes a storage device for containing solid raw materials installed inside the cylinder, the storage device divides the cavity of the cylinder into two areas, located in the The upper part of the storage device is the area to be melted for heating and dissolving the solid raw materials, and the lower part of the storage device is the storage area for storing the liquid raw materials after the solid raw materials are melted.

As a preferred solution, the diameter of the area to be melted is larger than the diameter of the storage area to form an installation groove, and the holding device includes a holding tray, the side wall of the holding tray is close to the groove wall of the installation groove and The limit is installed in the installation groove, and the bottom of the holding tray is hollowed out to form a hollowed out area.

As a preferred solution, a filter assembly is installed in the hollow area at the bottom of the holding tray, and the solid raw material is placed above the filter assembly, and after being liquefied, the solid raw material flows through the filter assembly to the liquid raw material storage area of the cylinder below.

As a preferred solution, the melting mechanism further includes a heating device installed outside the cylinder, and the heating device is used to heat the cylinder so as to dissolve the solid raw material inside the cylinder.

As a preferred solution, the melting mechanism further includes a temperature detection device installed at the bottom of the cylinder, and the temperature detection device is used to detect the temperature information of the cylinder and feed back to the control mechanism.

As a preferred solution, a material guide port is provided on the side wall of the cylinder body, and the material guide port is connected to the feed port of the extraction mechanism through a connection nozzle, and a material discharge port is also provided on the side wall of the cylinder body. The discharge port is equipped with a discharge device.

As a preferred solution, the extraction mechanism includes a wax pump, the wax pump is connected to a power device through a coupling, and the wax pump is connected to a nozzle device through a heating hose.

As a preferred solution, a reduction motor is also connected between the power device and the shaft coupling.

The utility model provides a feeding device for additive manufacturing. When it is to be produced, the solid raw material is placed in the area to be melted of the melting mechanism, and the control mechanism sends a control command to the melting mechanism. The melting mechanism heats the solid raw material, and the solid raw material is Processed into liquid raw materials, solid raw materials are dissolved into liquid raw materials, and then flow from the area to be melted to the storage area for storage to achieve filtration and separation. During production, the control mechanism sends a control command to the extraction mechanism, and the extraction mechanism extracts the stored liquid raw materials from the storage area of the melting mechanism, and then supplies the liquid raw materials to the corresponding nozzles for production. The utility model has simple structure, the heating and storage of raw materials are integrated, and the control mechanism collects the temperature information of the melting mechanism in real time to achieve the purpose of temperature control. It not only realizes the constant temperature melting of solid raw materials and the constant temperature flow of liquid raw materials, but also makes it difficult for liquid raw materials Condensation occurs, preventing equipment from clogging, reducing energy waste and improving production efficiency.

Description of drawings

Fig. 1 is a schematic diagram of a module structure of a feeding equipment for additive manufacturing of the present invention.

Fig. 2 is a schematic structural view of an additive manufacturing feeding device of the present invention.

Fig. 3 is a schematic cross-sectional structure diagram of a melting mechanism of an additive manufacturing feeding equipment of the present invention.

Detailed ways

Below in conjunction with specific embodiment and accompanying drawing, the utility model is further elaborated and illustrated:

Please refer to FIGS. 1 , 2 , and 3 , a feeding device for additive manufacturing, including a control mechanism 10 , a melting mechanism 20 and an extraction mechanism 30 .

The control mechanism 10 is configured to send control instructions to control the melting mechanism 20 and the extraction mechanism 3030 , and collect temperature information of the melting mechanism 20 .

Melting mechanism 20, said melting mechanism 20 includes a region to be melted for placing solid raw materials, said melting mechanism 20 also includes a storage area for storing liquid raw materials after melting of solid raw materials, solid raw materials after said melting mechanism 20 is heated After being dissolved into a liquid raw material, it flows from the area to be melted to the storage area.

The extracting mechanism 30 is used to extract the liquid raw material in the melting mechanism 20 and deliver it to the corresponding nozzle.

The melting mechanism 20 includes a cylinder body 21, the cylinder body 21 is made of a heat-conducting material, and when heated, the entire cylinder body 21 generates heat, and the upper surface of the cylinder body 21 is provided with an opening. The cylinder body 21 can be made of aluminum alloy or can be replaced by SUS304 (304 stainless steel), so that the cylinder body 21 has the characteristics of fast heat transfer and uniform heat conduction. When the cylinder body 21 is heated, the whole cylinder body 21 can Heat up quickly.

The melting mechanism 20 also includes a storage device 22 installed inside the cylinder body 21 for containing solid raw materials. The storage device 22 divides the cavity of the cylinder body 21 into two areas, located at The upper part of the storage device 22 is the area to be melted for heating and dissolving the solid raw materials, and the lower part of the storage device 22 is the storage area for storing the liquid raw materials after the solid raw materials are melted.

The diameter of the area to be melted is larger than the diameter of the storage area to form an installation groove 23, and the holding device 22 includes a charging tray 222, and the side wall of the holding tray 222 is close to the 23 groove walls of the installation groove And it is limitedly installed in the installation groove 23, and the bottom of the holding tray 222 is hollowed out to form a hollowed out area.

A filter assembly 224 is installed in the hollow area at the bottom of the holding tray 222. The solid raw material is placed above the filter assembly 224. After being liquefied, the solid raw material flows through the filter assembly 224 to the liquid raw material storage area of the cylinder 10 below.

Specifically, the installation of the material holding device 22 is simple and convenient, and when placing solid raw materials, it only needs to be put in from the opening of the cylinder body 21 . When the production was finished, the impurities that were not filtered out in the holding device 22 could also be taken out and dumped, or the remaining solid raw materials could be recycled. The height of the side wall of the charging tray 222 will reach a certain height, or a set value is set for the input amount of the solid raw material, so as to ensure that the solid raw material passes through the filter assembly 224 after dissolving, and avoids contamination from the side wall of the charging tray 222 and the cylinder. Flow down between the inner walls of the body 10, affecting the filtering effect. The filter assembly 224 adopts a filter screen, and the solid raw material flows down from the filter screen after being heated and dissolved.

The melting mechanism 20 also includes a heating device 24 installed outside the cylinder 21 , the heating device 24 is used to heat the cylinder 21 so as to dissolve the solid raw material inside the cylinder 21 .

The melting mechanism 20 also includes a temperature detection device 25 installed at the bottom of the cylinder 21 , the temperature detection device 25 is used to detect the temperature information of the cylinder 21 and feed it back to the control mechanism 10 . The temperature detection device 25 is a temperature probe.

Specifically, the heating device 24 adopts a heating belt, and the heating belt is wrapped on the outer wall of the cylinder body 21, so that the heating effect of the heating belt on the cylinder body is better, the heating of the cylinder body as a whole is more uniform and fast, and the heating of the heating belt is controlled. Agency 10 controls. The control mechanism 10 can collect the temperature of the cylinder body 21 through the temperature detection device 25 in real time, so as to judge whether to control the heating belt to continue heating, and realize the real-time control of the temperature of the cylinder body 21, which is conducive to the heating and dissolution of solid raw materials and also to the liquid state The flow of raw materials. The temperature detection device 25 is at the bottom of the cylinder body 21, just below the storage area for storing the liquid raw materials of the cylinder body 21, the temperature of the cylinder body 21 detected at this time is similar to the temperature of the liquid raw materials at this time, and the bottom detector The temperature can more intuitively show the temperature of the liquid raw materials that will enter the wax pump, and is easier to control. It can effectively prevent the condensation of liquid raw materials and realize the constant temperature flow of liquid raw materials, thereby improving the anti-blocking ability of the equipment.

The side wall of the cylinder body 21 is provided with a material guide port, and the material guide port is connected to the feed port of the extraction mechanism 30 through a connection nozzle 26, and the side wall of the cylinder body 21 is also provided with a discharge port. The discharge port is equipped with a discharge device 27. The discharge device 27 includes a discharge valve 272. The setting of the discharge valve 272 facilitates the cleaning and maintenance of the cylinder body 21. After the production is completed, the remaining liquid raw materials are discharged through the discharge device 29.

The pumping mechanism 30 includes a wax pump 32, the wax pump 32 is connected to a power unit 36 through a coupling 34, and the wax pump 32 is connected to a nozzle device through a heating hose. A reduction motor 38 is also connected between the power unit 36 and the coupling 34 . The power unit is a stepper motor or a servo motor. The wax pump 32 and the power unit 36 are connected through a reduction motor 38 and a coupling 34, so that the stepper motor 36 can provide more accurate driving force, and cooperate with the control mechanism 10 to achieve high-precision control, so that the wax pump 32 supplies liquid When raw materials are used, the flow of liquid raw materials can be precisely controlled.

Specifically, when performing additive manufacturing, the solid paraffin is first placed on the filter screen of the material holding device inside the cylinder. The control mechanism sends out control instructions to control the heat generation of the heating zone, and the heating zone heats the cylinder body. After the cylinder body is heated to a certain temperature, the solid paraffin inside the cylinder body begins to dissolve. The material holding device is installed in the installation groove of the tank, which can not only achieve the function of filtration, but also realize the separation of upper and lower filtration. After the solid paraffin dissolves, it becomes liquid paraffin and flows down through the filter screen, and is stored in the storage area at the lower part of the tank. Since the cylinder body is made of aluminum alloy or SUS304 with good thermal conductivity, the lower part of the cylinder body also has a certain temperature at this time, and the liquid paraffin will not condense to cause equipment blockage. When pumping wax, the control mechanism sends a control command to the power unit, the power unit starts, and the power unit drives the wax pump through the geared motor and the coupling to start extracting the liquid paraffin in the cylinder and pump it into the nozzle device.

The utility model provides a feeding device for additive manufacturing. When it is to be produced, the solid raw material is placed in the area to be melted of the melting mechanism, and the control mechanism sends a control command to the melting mechanism. The melting mechanism heats the solid raw material, and the solid raw material is Processed into liquid raw materials, solid raw materials are dissolved into liquid raw materials, and then flow from the area to be melted to the storage area for storage to achieve filtration and separation. During production, the control mechanism sends a control command to the extraction mechanism, and the extraction mechanism extracts the stored liquid raw materials from the storage area of the melting mechanism, and then supplies the liquid raw materials to the corresponding nozzles for production. The utility model has a simple and more reasonable structure, the heating and temperature control of the cylinder are integrated, the dissolution and storage of raw materials are integrated, and the control mechanism collects the temperature information of the melting mechanism in real time to achieve the purpose of temperature control, and not only realizes the solid raw material Constant temperature melting and constant temperature flow of liquid raw materials make it difficult for liquid raw materials to condense, prevent equipment from clogging, and reduce energy waste. It can better realize secondary and above material re-introduction and improve production efficiency.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than limiting the protection scope of the present utility model. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art Personnel should understand that the technical solution of the utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solution of the utility model.

Claims (10)

1. A feeding device for additive manufacturing, characterized in that: it includes a control mechanism, a melting mechanism and an extraction mechanism; The melting mechanism includes an area to be melted for placing solid raw materials, and the melting mechanism also includes a storage area for storing liquid raw materials after melting the solid raw materials. After the melting mechanism is heated, the solid raw materials are dissolved into liquid raw materials and released area flow to storage area; The extraction mechanism is used to extract the liquid raw material in the melting mechanism and deliver it to the corresponding nozzle; The control mechanism is used to send control instructions to control the melting mechanism and the extraction mechanism, and collect temperature information of the melting mechanism. 2. A feeding device for additive manufacturing according to claim 1, characterized in that: the melting mechanism includes a cylinder, the cylinder is made of heat-conducting material, and the upper surface of the cylinder is provided with an opening . 3. The feeding equipment for additive manufacturing according to claim 2, characterized in that: the melting mechanism also includes a material holding device installed inside the cylinder body for holding solid raw materials, and the holding device The material device divides the cavity of the cylinder body into two areas, the upper part of the material storage device is the area to be melted for heating and dissolving solid raw materials, and the lower part of the material storage device is the area to be melted. In the storage area for storing liquid raw materials after solid raw materials are melted. 4. A feeding device for additive manufacturing according to claim 3, characterized in that: the diameter of the area to be melted is larger than the diameter of the storage area to form a mounting groove, and the holding device includes a holding tray, The side wall of the holding tray is close to the groove wall of the installation groove and is limitedly installed in the installation groove, and the bottom of the holding tray is hollowed out to form a hollow area. 5 . The feeding equipment for additive manufacturing according to claim 4 , wherein a filter assembly is installed in the hollow area at the bottom of the holding tray. 6 . 6. The feeding equipment for additive manufacturing according to claim 2, wherein the melting mechanism further includes a heating device installed outside the cylinder. 7. The feeding equipment for additive manufacturing according to claim 2, wherein the melting mechanism further includes a temperature detection device installed at the bottom of the cylinder. 8. A feeding device for additive manufacturing according to claim 2, characterized in that: the side wall of the cylinder body is provided with a material guide port, and the material guide port is connected to the extraction mechanism through a connection nozzle The feed port of the cylinder body is also provided with a discharge port on the side wall of the cylinder, and a discharge device is installed at the discharge port. 9. The feeding equipment for additive manufacturing according to claim 1, characterized in that: the extraction mechanism includes a wax pump, the wax pump is connected to a power unit through a coupling, and the wax pump is powered by a heating soft The tube connects the nozzle assembly. 10. The feeding equipment for additive manufacturing according to claim 9, characterized in that: a deceleration motor is connected between the power device and the coupling.