TWI686287B - Material filling device for three-dimensional printing - Google Patents

Abstract

A material filling device for three-dimensional printing includes a body having a material inlet portion and a material outlet portion communicated with each other, where at one end of the material outlet portion a blocking wall and an aperture are disposed, the material inlet portion and the material outlet portion are communicated by the aperture, and at the other end of the material outlet portion an opening is disposed; an elastic member disposed in the material outlet portion, where one end portion of the elastic member pressing the blocking wall; and a stopper pressed by the other end of the elastic member covering up the opening. When an external force is applied on the stopper, the elastic member is compressed and the opening is uncovered. From the opening, the heated semisolid additive manufacturing material flows out. Thereby, the output amount of the additive manufacturing material may be regulated manually, for use in patching the cuts in the surface of a three-dimensional printed object.

Description

Three-dimensional printing and replenishing device

The invention is a three-dimensional printing and replenishing device, in particular, it applies an external force to compress the elastic element to open the opening, so that the layered manufacturing material in a semi-solution state after heating correspondingly flows out of the opening, so as to manually control the amount of discharge to repair The invention of surface scoring of three-dimensional printing models.

Republic of China New Patent Announcement No. M514401 "Temperature Control Display Stacking Manufacturing Pen", mainly related to a temperature control display stacking manufacturing pen, which includes a body, a feeding device, a heating device, a temperature control module, a temperature sensing element and Display panel. The user can conveniently set the target temperature through a temperature setting unit, and view the target temperature and the sensed temperature value sensed by the temperature sensing element through the display panel, so as to better grasp the heating status of the laminated manufacturing material. In addition, the running direction and speed of the feeding device can be controlled by a speed control key and a direction control key, so as to adjust the output of the layered manufacturing material according to needs. Therefore, it is more convenient to adjust and observe the heating conditions of the materials for different materials or use environments, and achieve better build-up manufacturing quality.

Although the above-mentioned previous case can control the speed of the wire being rolled out through the speed control key, the amount of the output is through mechanical multi-stage output, so it can only achieve the production of three-dimensional printed products, and cannot be manually adjusted according to personal needs. The amount of material is very small, so it does not have the function of repairing the surface defects of the product.

Secondly, the present invention provides a three-dimensional printing replenishment device, including: a body, a feeding part and a discharging part connected, the discharging part is in the form of two ends transparent and includes a first end and A second end, the first end has a blocking wall and a notch, the discharge part communicates with the inlet through the notch At the material part, the second end has an opening; an elastic element is placed in the material discharge part, and one end of the elastic element abuts against the retaining wall; a stopper piece is pressed against the other end of the elastic element, The stopper is just enough to close the opening of the second end, and when an external force is applied, the stopper will compress the elastic element to open the opening.

Wherein, the stopper is a sphere.

Further, a protection element is included, one end is connected to the blocking wall, the other end of the protection element is pressed against the stopper, the protection element surrounds the elastic element, the protection element defines a closed chamber, and the protection element has flexibility .

Wherein, the feeding part is provided with a feeding device, and the feeding device is sandwiched with a laminated manufacturing material and transferred to the discharging part, and the discharging part is provided with a heating device, the heating device is adjacent to the baffle wall, by The heating device heats the laminated manufacturing material, and when the stopper correspondingly opens the opening, the heated laminated manufacturing material in a semi-solution state flows out of the opening from the aforementioned notch.

Wherein, the heating device includes a heating coil and a temperature sensor, the temperature sensor is electrically connected to the heating coil, the heating device defines a heating space, and the temperature sensor is used to sense a heating temperature of the heating space When the heating temperature is lower than a temperature threshold, the heating coil heats the laminated manufacturing material, and when the heating temperature is higher than the temperature threshold, the heating coil stops heating the laminated manufacturing material.

Among them, the feeding device includes two rollers, the rollers can be relatively retracted to form a gap, the gap is for sandwiching the laminated manufacturing material, by changing the size of the gap, and then with the clamping size of different laminated manufacturing materials, And by rotating the roller, the laminated manufacturing material is driven to be delivered to the discharge part.

Further, the feeding device includes a driving unit connected to the roller to drive the roller to rotate.

Wherein, the heating device is provided with a liquid level sensor, which is electrically connected to the driving unit. The liquid level sensor is used to sense the liquid level height of the layered manufacturing material in the semi-solution state after heating at the discharge part. When the liquid level reaches a liquid level threshold, the driving unit stops driving the roller to rotate to interrupt the transfer of the laminated manufacturing material to the discharge location.

According to the above technical features, the following effects can be achieved:

1. When an external force is applied on the surface of a three-dimensional printing model, the stopper compresses the elastic element, and the stopper is released from the second end by the flexibility of the protection element to open the opening, After heating, the layered manufacturing material in a semi-solution state flows out of the opening corresponding to the opening of the retaining wall to manually control the output amount of the layered manufacturing material in a semi-solution state according to requirements, so as to repair the surface of the three-dimensional printing model. The lack of materials such as deep scores, dents, etc. makes the finished product of the three-dimensional printing model more beautiful.

2. By increasing the gap between the aforementioned rollers, the aforementioned rollers can be adapted to clamp the laminated manufacturing materials of different sizes.

3. The flexible metal material of the protection element can protect the elastic element from being adhered to the laminated manufacturing material in a semi-solution state, and prevent the elasticity of the protection element from being affected.

4. The heat energy transmitted to the stopper through the heating coil ensures that the laminated manufacturing material in a semi-solution state maintains a molten state, and the stopper can simultaneously heat the surface of the three-dimensional printing model through the heat energy to facilitate the The surface of the three-dimensional printing model is repaired with more smooth and beautiful nicks and holes.

(1): Ontology

(11): Feeding position

(111): Feeding device

(112): Roller

(113): Drive unit

(114): clearance

(12): Discharge part

(121): The first end

(122): The second end

(1221): opening

(123): Heating device

(1231): heating space

(1232): Heating coil

(1233): temperature sensor

(1234): Liquid level sensor

(124): partition

(1241): Inlet

(13): Retaining wall

(131): Notch

(2): Elastic element

(3): Protection element

(31): closed room

(4): stopper

(A): Laminated manufacturing materials

(A’): Laminated manufacturing materials

(A1): Laminated manufacturing materials

(B): 3D printing model

[The first figure] is a sectional view of an embodiment of the present invention.

[Second figure] is a functional block diagram of a heating device and a feeding device according to an embodiment of the present invention.

[Third figure] It is a schematic diagram of the lamination manufacturing material flowing into the discharge part after heating in the embodiment of the present invention.

[Fourth figure] It is a schematic diagram of controlling the displacement of the roller to adjust the gap according to different sizes of build-up manufacturing materials according to an embodiment of the present invention.

[Fifth figure] It is a schematic view of the stopper compressing the elastic element and opening the opening of the embodiment of the present invention to control the outflow of the laminated manufacturing material in a semi-solution state.

Based on the above technical features, the main functions of the three-dimensional printing and replenishing device of the present invention will be clearly shown in the following embodiments.

Please refer to the first and second figures first. The preferred embodiment of the present invention is a three-dimensional printing and replenishing device, including: a body (1), a feeding part (11) and a discharging part (12) connected, the feeding part (11) is provided with a feeding device (111), the feeding device (111) includes two rollers (112) and a driving unit (113), the foregoing two rollers (112) can Relatively retracted to form a gap (114) between the two rollers (112) [please refer to the fourth figure], the driving unit (113) is connected to the roller (112). The discharge part (12) is in the form of a hollow at both ends. The discharge part (12) includes a first end (121) and a second end (122), and the first end (121) has a blocking wall (13), the retaining wall (13) is provided with a plurality of notches (131) in this embodiment, the discharge part (12) communicates with the feed part (11) through the gap (131), and the discharge part ( 12) The second end (122) has an opening (1221), the discharge part (12) is further provided with a heating device (123), the heating device (123) is adjacent to the retaining wall (13), the heating device ( 123) and the feeding part (11) is provided with a partition (124), the partition (124) and the retaining wall (13) jointly define a heating space (1231), the partition (124) is provided There is a feeding port (1241), the feeding port (1241) communicates with the heating space (1231). An elastic element (2) is placed in the discharge part (12), and one end of the elastic element (2) abuts against the retaining wall (13). The elastic element (2) in this embodiment is A spring. A protection element (3), one end of which is connected to the retaining wall (13), the protection element (3) surrounds the elastic element (2), the protection element (3) defines a closed chamber (31), the protection element (3) ) In this embodiment, it is a flexible metal. A stopper (4), the other end of the protection element (3) abuts against the stopper (4), so that The stopper (4) is just enough to close the opening (1221) of the second end (122). The stopper (4) is a sphere, which in this embodiment is a ball. The heating device (123) includes a heating coil (1232), a temperature sensor (1233) and a liquid level sensor (1234), the heating coil (1232) is electrically connected to the temperature sensor (1233), The liquid level sensor (1234) is electrically connected to the driving unit (113), the heating coil (1232) and connected to the stopper (4), so as to conduct thermal energy to the stopper (4).

Please refer to the first, third and fourth figures, the feeding device (111) is provided with a build-up manufacturing material (A), and the build-up manufacturing material (A) is clamped on the two rollers (112) ), and the two rollers (112) are slightly sandwiched by the laminated manufacturing material (A) by elastic force, and then the roller (112) is driven to rotate by controlling the driving unit (113) [ As shown in the second figure], the laminated manufacturing material (A) is continuously transported toward the discharge part (12), so that the laminated manufacturing material (A) passes through the inlet of the separator (124) (1241). When the user wants to use the larger-sized laminated manufacturing material (A1), the gap between the two rollers (112) (114) can be increased so that the rollers (112) can fit the larger clamping size. Laminated manufacturing material (A1) [Controlling the displacement of the aforementioned roller (112) to adjust the size of the gap (114) is a conventional technique and will not be repeated here].

Please continue to refer to the second and third figures, and then control the heating coil (1231) of the heating device (123) to heat the laminated manufacturing material (A) to make the laminated manufacturing material in a semi-solution state after melting (A') flows through the gap (131) of the retaining wall (13) and guides into the discharge part (12).

In particular, when the heating device (123) is heating, the temperature sensor (1233) is used to sense a heating temperature of the heating space (1231), when the heating temperature is lower than a temperature threshold , The heating coil (1232) heats the laminated manufacturing material (A), and when the heating temperature is higher than the temperature threshold, the heating coil (1232) stops heating the laminated manufacturing material (A), and The liquid level sensor (1234) is used to sense the liquid level of the laminated manufacturing material (A') in the semi-solution state after heating at the discharge part (12), when the liquid level reaches a liquid level At the threshold value, the driving unit (113) automatically stops driving the aforementioned roller (112) to rotate, so as to interrupt the transfer of the laminated manufacturing material (A) to the discharge part (12) [Controlling the heating device (123) to heat the build-up manufacturing material (A) is a conventional technique for three-dimensional printing, and the detailed process is omitted here].

Please refer to the second and fifth figures, when an external force is applied on the surface of a three-dimensional printing model (B), the stopper (4) compresses the elastic element (2), and by the The flexibility of the protection element (3) makes the stopper (4) detach from the second end (122) to open the opening (1221), so that the laminated manufacturing material (A') in a semi-solution state after heating is removed from the aforementioned stopper The notch (131) of the wall (13) flows out of the opening (1221) correspondingly to manually control the output of the laminated manufacturing material (A') in a semi-solution state according to requirements [and the flexible metal of the protection element (3) The material can protect the elastic element (2) from being stuck to the semi-solution state of the laminated manufacturing material (A') and prevent the elasticity of the protective element (3) from being affected], so as to repair the three-dimensional printing model (B) The lack of materials such as scores, pits and other depths on the surface makes the finished product of the three-dimensional printing model (B) more beautiful, and the heat energy transmitted to the stopper (4) through the heating coil (1232) ensures The laminated manufacturing material (A') in a semi-solution state maintains a molten state, and the stopper (4) can simultaneously heat the surface of the three-dimensional printing model (B) through thermal energy to facilitate the three-dimensional printing model (B) The nicks and dents on the surface are repaired more smoothly and beautifully.

Based on the description of the above embodiments, the operation, use and effects of the present invention can be fully understood. However, the above-mentioned embodiments are only preferred embodiments of the present invention, and cannot be used to limit the implementation of the present invention. The scope, that is, simple equivalent changes and modifications made in accordance with the scope of the present invention's patent application and the description of the invention, is within the scope of the present invention.

(1): Ontology

(2): Elastic element

(3): Protection element

(4): stopper

(122): The second end

(1221): opening

(13): Retaining wall

(131): Notch

(A): Laminated manufacturing materials

(A’): Laminated manufacturing materials

(B): 3D printing model

Claims (4)

A three-dimensional printing and replenishing device includes: a body, a feeding part and a discharging part are connected, the feeding part is provided with a feeding device, and the feeding device is provided with a laminated manufacturing material and is transmitted to the output The feeding device includes two rollers and a driving unit. The rollers can be relatively retracted to form a gap. The gap is used to sandwich the laminated manufacturing material. By changing the gap size, the clamping size is different. The laminated manufacturing material is driven to be transferred to the discharge part by the rotation of the roller. The driving unit is connected to the roller to drive the rotation of the roller. It includes a first end and a second end, the first end has a baffle wall and a notch, the discharging part communicates with the feeding part through the notch, the second end has an opening, and the discharging part is provided with a heating device , The heating device is adjacent to the baffle wall, and the layered manufacturing material is heated by the heating device. When the stopper correspondingly opens the opening, the layered manufacturing material in a semi-solution state after heating flows out from the aforementioned gap corresponding to the Opening, the heating device is provided with a liquid level sensor, electrically connected to the driving unit, the liquid level sensor is used to sense the liquid level height of the laminated manufacturing material in the semi-solution state after heating at the discharge part, When the liquid level reaches a liquid level threshold, the drive unit stops driving the roller to rotate to interrupt the transfer of the laminated manufacturing material to the discharge part; an elastic element is placed in the discharge part, the elastic element One end is against the blocking wall; a blocking piece is pressed against the other end of the elastic element, so that the blocking piece is just enough to close the opening of the second end, and when an external force is applied, the blocking piece The elastic element is compressed to open the opening. The three-dimensional printing replenishment device as described in item 1 of the patent application scope, wherein the stopper is a sphere. The three-dimensional printing replenishment device as described in item 1 of the scope of the patent application further includes a protection element, one end of which is connected to the blocking wall, the other end of the protection element abuts against the stopper, and the protection element surrounds the elasticity The protection element defines a closed chamber, and the protection element has flexibility. The three-dimensional printing replenishment device as described in item 1 of the patent application scope, wherein the heating device includes a heating coil and a temperature sensor, the temperature sensor is electrically connected to the heating coil, the heating device defines a heating The temperature sensor is used to sense a heating temperature of the heating space. When the heating temperature is lower than a temperature threshold, the heating coil heats the laminated manufacturing material, and when the heating temperature is higher than the temperature threshold At the value, the heating coil stops heating the buildup material.

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