Etpu granular material 3d printer

Abstract

The present application relates to a kind of ETPU granular material 3D printer, print head conveying device is installed on rack, first print head is installed in print head conveying device output end, first print head is close to workpiece at any position, workpiece conveying device is installed on rack, workpiece conveying device has two rotation axes perpendicular to each other, workpiece is clamped in the output end of workpiece conveying device, workpiece can be contacted with first print head at any angle, first print head includes first granular material inlet, first water-based glue inlet, first water-based catalyst inlet and adhesive granule outlet, granular material enters first print head from first granular material inlet, first water-based glue inlet injects water-based glue, injects water-based catalyst at first water-based catalyst inlet, so that adjacent granular material can be mutually adhered, adhesive granule outlet extrudes granular material with surface coated with glue to workpiece and is piled up to realize 3D printing, and the workpiece printed has good elasticity and air permeability.

Description

Technical Field

[0001] This invention relates to the field of 3D printing technology, and in particular to an ETPU particulate material 3D printer. Background Technology

[0002] Existing ETPU shoe soles are made by feeding granular material into a molding cavity, then introducing steam into the molding cavity and keeping it warm, which steams and molds the granules together. This process leaves no gaps between the granules, resulting in poor breathability and reduced elasticity due to the lack of gaps between the granules. Summary of the Invention

[0003] To overcome the technical defects of the existing technology, the present invention provides an ETPU granular material 3D printer, which prints workpieces with good elasticity and air permeability.

[0004] The technical solution adopted in this invention is:

[0005] An ETPU granular material 3D printer includes a frame, a printhead conveyor, a workpiece conveyor, and a first printhead. The printhead conveyor is mounted on the frame, and the first printhead is mounted on the output end of the printhead conveyor. The printhead conveyor drives the first printhead to perform three-dimensional motion. The workpiece conveyor is mounted on the frame and has two mutually perpendicular rotating shafts. The first printhead includes a first granular material inlet, a first water-based adhesive inlet, a first water-based catalyst inlet, and an adhesive-coated granule outlet.

[0006] Preferably, the printer further includes a second printhead and a printhead switching device. The printhead switching device is installed at the output end of the printhead conveyor. The second printhead is installed on the printhead switching device. The printhead conveyor drives the printhead switching device to perform three-dimensional movement. The printhead switching device slides along the printhead conveyor. The printhead switching device drives the second printhead to rise and fall.

[0007] Preferably, the first printhead includes a first screw, a first extrusion motor, a first print base, a first extrusion head, and a first extrusion tube. The first print base is provided with a first feeding chamber. The first extrusion motor is mounted on the first print base. The first feeding chamber is provided with a first granular material inlet. The first screw is mounted on the output end of the first extrusion motor and extends into the first feeding chamber. The first extrusion tube is fixedly installed at the bottom of the first feeding chamber of the first print base and communicates with the first feeding chamber. The first extrusion head is located at the end of the first extrusion tube. The first extrusion tube is provided with a first water-based adhesive inlet and a first water-based catalyst inlet. The upper end of the first screw has a smooth section.

[0008] Preferably, the second printhead includes a second screw, a second extrusion motor, a second print base, a second extrusion port, and a second extrusion tube. The second print base has a second feeding chamber. The second extrusion motor is mounted on the second print base. The second feeding chamber has a second granular material inlet. The second screw is mounted at the output end of the second extrusion motor and extends into the second feeding chamber. The second extrusion tube is fixed to the bottom of the second feeding chamber of the second print base and communicates with the second feeding chamber. The second extrusion port is located at the end of the second extrusion tube. The second extrusion tube has a second water-based adhesive inlet and a second water-based catalyst inlet. The upper end of the second screw has a smooth section.

[0009] Preferably, the printhead conveying device includes a longitudinal translation device, a lateral translation device, and a lifting translation device installed in sequence. The movement directions of the longitudinal translation device, the lateral translation device, and the lifting translation device are perpendicular to each other. The first printhead is mounted on the lifting translation device, and the longitudinal translation device is fixedly mounted on the frame.

[0010] Preferably, the longitudinal translation device includes two parallel longitudinal conveying units. Each longitudinal conveying unit includes a longitudinal translation beam fixed on the frame, a longitudinal translation motor, a longitudinal translation screw, a longitudinal translation slider, and a longitudinal translation rail. The longitudinal translation motor is mounted on the longitudinal translation beam, the longitudinal translation rail is fixed on the longitudinal translation beam, the longitudinal translation screw is mounted on the output end of the longitudinal translation motor, the longitudinal translation slider slides along the longitudinal translation rail, and the longitudinal translation rail is connected to the longitudinal translation screw in a transmission manner. The two ends of the transverse translation device are respectively mounted on the two longitudinal translation sliders.

[0011] Preferably, the lateral translation device includes a lateral translation beam, a lateral translation motor, a lateral translation screw, a lateral translation slider, and a lateral translation rail, all mounted on a longitudinal translation device. The lateral translation motor is mounted on the lateral translation beam, the lateral translation rail is fixedly mounted on the lateral translation beam, the lateral translation screw is mounted on the output end of the lateral translation motor, the lateral translation slider slides along the lateral translation rail, and the lateral translation rail is connected to the lateral translation screw via a transmission. The lifting and lateral translation device is mounted on the longitudinal translation slider.

[0012] Preferably, the lifting and translating device includes a lifting column, a lifting and translating motor, a lifting and translating lead screw, a lifting and translating slider, and a lifting and translating rail. The lifting and translating motor is mounted on the lifting column, the lifting and translating rail is fixedly mounted on the lifting column, the lifting and translating lead screw is mounted on the output end of the lifting and translating motor, the lifting and translating slider slides along the lifting and translating rail, the lateral translation device is connected to the lifting and translating lead screw, the lifting and translating slider is fixedly mounted on the lateral translation slider, and the first print head is mounted on the lifting column.

[0013] Preferably, a support frame is installed on the side of one of the longitudinal moving frames, and a semi-circular wheel is installed on the top of the support frame. An arc-shaped mounting groove is opened on the semi-circular wheel, and a camera base is installed at the arc-shaped mounting groove by bolts. The camera acquisition device is installed on the camera base.

[0014] Preferably, the workpiece conveying device includes a first rotary motor and a second rotary motor mounted on a frame. The rotation axis of the first rotary motor is horizontal, and the second rotary motor is mounted on the output end of the first rotary motor. The rotation axes of the first rotary motor and the second rotary motor are perpendicular to each other.

[0015] The beneficial effects of this invention are:

[0016] The printhead conveyor is mounted on the frame, and the first printhead is mounted on the output end of the printhead conveyor. The printhead conveyor drives the first printhead to perform three-dimensional movement, thereby enabling the first printhead to approach the workpiece at any position. The workpiece conveyor is mounted on the frame and has two mutually perpendicular rotating shafts. The workpiece is clamped at the output end of the workpiece conveyor. Because the workpiece conveyor has two mutually perpendicular rotating shafts, the workpiece can contact the first printhead at any angle. The first printhead includes a first granule inlet, a first water-based adhesive inlet, a first water-based catalyst inlet, and an adhesive-coated granule outlet. Granules enter the first printhead from the first granule inlet, water-based adhesive is injected from the first water-based adhesive inlet, and water-based catalyst is injected from the first water-based catalyst inlet, so that adjacent granules can adhere to each other. The adhesive-coated granule outlet extrudes the granules coated with adhesive onto the workpiece to stack them up and achieve 3D printing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective.

[0019] Figure 3 This is a schematic diagram of the first printhead structure of the present invention.

[0020] Figure 4 This is a schematic diagram of the second printhead structure of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Rack;

[0023] 2. Printhead conveying device; 21. Longitudinal translation device; 211. Longitudinal conveying unit; 2111. Longitudinal translation beam; 2112. Longitudinal translation motor; 2113. Longitudinal translation screw; 2114. Longitudinal translation slider; 2115. Longitudinal translation rail; 22. Lateral translation device; 221. Lateral translation beam; 222. Lateral translation motor; 223. Lateral translation screw; 224. Lateral translation rail; 23. Lifting and translation device; 231. Lifting column; 232. Lifting and translation motor; 233. Lifting and translation screw; 234. Lifting and translation slider; 235. Lifting and translation rail;

[0024] 3. Workpiece conveying device; 31. First rotary motor; 32. Second rotary motor;

[0025] 4. First printhead; 41. First granular material inlet; 42. First water-based adhesive inlet; 43. First water-based catalyst inlet; 44. Adhesive-coated granule outlet; 45. First screw; 46. First extrusion motor; 47. First print base; 471. First feed chamber; 48. First extrusion head; 49. First extrusion tube;

[0026] 5. Second printhead; 51. Second granule inlet; 52. Second water-based adhesive inlet; 53. Second water-based catalyst inlet; 55. Second screw; 56. Second extrusion motor; 57. Second print base; 571. Second feed chamber; 58. Second extrusion port; 59. Second extrusion tube;

[0027] 6. Printhead switching device;

[0028] 7. Support frame; 71. Semicircular wheel; 72. Camera acquisition device. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings:

[0030] like Figure 1-4As shown, this embodiment provides an ETPU particulate material 3D printer, including a frame 1, a printhead conveying device 2, a workpiece conveying device 3, and a first printhead 4. The printhead conveying device 2 is mounted on the frame 1, and the first printhead 4 is mounted on the output end of the printhead conveying device 2. The printhead conveying device 2 drives the first printhead 4 to perform three-dimensional movement, thereby enabling the first printhead 4 to approach the workpiece at any position. The workpiece conveying device 3 is mounted on the frame 1 and has two mutually perpendicular rotating axes. The workpiece is clamped at the output end of the workpiece conveying device 3. Because the workpiece conveying device 3 has two mutually perpendicular rotating axes, the workpiece can... The first print head 4 can contact the first print head 4 at any angle. The first print head 4 includes a first particle inlet 41, a first water-based adhesive inlet 42, a first water-based catalyst inlet 43, and an adhesive-coated particle outlet 44. The particle material enters the first print head 4 through the first particle material inlet 41. The first water-based adhesive inlet 42 injects water-based adhesive, which is a polyurethane foam adhesive. The first water-based catalyst inlet 43 injects water-based catalyst, which is water, so that adjacent particles can stick together. The adhesive-coated particle outlet 44 extrudes the particles coated with adhesive onto the workpiece to stack them up and achieve 3D printing. The printed workpiece has good elasticity and breathability.

[0031] The printer also includes a second printhead 5 and a printhead switching device 6. The printhead switching device 6 is installed at the output end of the printhead conveying device 2, and the second printhead 5 is installed on the printhead switching device 6. The printhead conveying device 2 drives the printhead switching device 6 to perform three-dimensional movement. The printhead switching device 6 slides along the printhead conveying device 2. The printhead switching device 6 is a slide cylinder. The printhead switching device 6 drives the second printhead 5 to rise and fall. The present invention sets a first printhead 4 and a second printhead 5. In this way, after the first printhead 4 finishes printing, the second printhead 5, which is filled with different colors or different types of granules, can quickly descend to print, realizing the splicing of different granules.

[0032] Specifically: The first print head 4 includes a first screw 45, a first extrusion motor 46, a first print base 47, a first extrusion head 48, and a first extrusion tube 49. The first print base 47 is provided with a first feeding chamber 471. The first extrusion motor 46 is mounted on the first print base 47. The first feeding chamber 471 is provided with a first particle inlet 41. The first screw 45 is mounted on the output end of the first extrusion motor 46 and extends into the first feeding chamber 471. The first extrusion tube 49 is fixedly installed at the bottom of the first feeding chamber 471 of the first print base 47 and communicates with the first feeding chamber 471. The first extrusion head 48 is located at the end of the first extrusion tube 49. The device is equipped with a first water-based adhesive inlet 42 and a first water-based catalyst inlet 43. The upper end of the first screw 45 has a smooth section. The granules enter the first extrusion tube 49 through the smooth section in the first feed chamber 471. The first extrusion motor 46 drives the first screw 45 to rotate, thereby extruding the granules out of the first extrusion head 48 at the end of the first extrusion tube 49. It should be noted that the first water-based adhesive inlet 42 is used to inject water-based adhesive, which is a polyurethane foam adhesive. The first water-based catalyst inlet 43 is used to inject water-based catalyst, which is water. In this way, the granules are uniformly coated with adhesive in the first extrusion tube 49. After the granules are extruded from the first extrusion tube 49, additive manufacturing can be achieved.

[0033] Specifically: The second print head 5 includes a second screw 55, a second extrusion motor 56, a second print base 57, a second extrusion port 58, and a second extrusion tube 59. The second print base 57 has a second feeding chamber 571. The second extrusion motor 56 is mounted on the second print base 57. The second feeding chamber 571 has a second particle inlet 51. The second screw 55 is mounted at the output end of the second extrusion motor 56 and extends into the second feeding chamber 571. The second extrusion tube 59 is fixed to the bottom of the second feeding chamber 571 of the second print base 57 and communicates with the second feeding chamber 571. The second extrusion port 58 is located at the end of the second extrusion tube 59. The outlet tube 59 is provided with a second water-based adhesive inlet 52 and a second water-based catalyst inlet 53. The upper end of the second screw 55 has a smooth section. The granules enter the second extrusion tube 59 through the smooth section in the second feed chamber 571. The second extrusion motor 56 drives the second screw 55 to rotate, thereby extruding the granules out of the end of the second extrusion tube 59. It should be noted that the second water-based adhesive inlet 52 is used to inject water-based adhesive, which is a polyurethane foam adhesive. The second water-based catalyst inlet 53 is used to inject water-based catalyst, which is water. In this way, the granules are uniformly coated with adhesive in the second extrusion tube 59. After the granules are extruded from the second extrusion tube 59, additive manufacturing can be achieved.

[0034] The printhead conveying device 2 includes a longitudinal translation device 21, a lateral translation device 22, and a lifting translation device 23 installed in sequence. The movement directions of the longitudinal translation device 21, the lateral translation device 22, and the lifting translation device 23 are perpendicular to each other, thereby enabling the first printhead 4 to be conveyed to any position. The first printhead 4 and the printhead switching device 6 are both installed on the lifting translation device 23. The lifting translation device 23 is used to retract or extend the first printhead 4 and the printhead switching device 6. The longitudinal translation device 21 is fixedly mounted on the frame 1.

[0035] Specifically, the longitudinal translation device 21 includes two parallel longitudinal conveying units 211. Each longitudinal conveying unit 211 includes a longitudinal translation beam 2111 fixed on the frame 1, a longitudinal translation motor 2112, a longitudinal translation screw 2113, a longitudinal translation slider 2114, and a longitudinal translation rail 2115. The longitudinal translation motor 2112 is mounted on the longitudinal translation beam 2111, the longitudinal translation rail 2115 is fixed on the longitudinal translation beam 2111, the longitudinal translation screw 2113 is mounted on the output end of the longitudinal translation motor 2112, the longitudinal translation slider 2114 slides along the longitudinal translation rail 2115, and the longitudinal translation rail 2115 is connected to the longitudinal translation screw 2113 in a transmission manner. The two ends of the transverse translation device 22 are respectively mounted on the two longitudinal translation sliders 2114. The longitudinal translation motor 2112 drives the longitudinal translation screw 2113 to rotate, thereby driving the longitudinal translation slider 2114 to slide along the longitudinal translation rail 2115.

[0036] Specifically, the lateral translation device 22 includes a lateral translation beam 221, a lateral translation motor 222, a lateral translation screw 223, a lateral translation slider, and a lateral translation rail 224, all mounted on the longitudinal translation device 21. The lateral translation motor 222 is mounted on the lateral translation beam 221, and the lateral translation rail 224 is fixedly mounted on the lateral translation beam. The lateral translation screw 223 is mounted on the output end of the lateral translation motor 222. The lateral translation slider slides along the lateral translation rail 224, and the lateral translation rail 224 is connected to the lateral translation screw 223 in a transmission manner. The lifting and lateral translation device 23 is mounted on the longitudinal translation slider 2114. The lateral translation motor 222 drives the lateral translation screw 223 to rotate, thereby driving the lateral translation slider to slide along the lateral translation rail 224.

[0037] Specifically, the lifting and translating device 23 includes a lifting column 231, a lifting and translating motor 232, a lifting and translating lead screw 233, a lifting and translating slider 234, and a longitudinal translating rail 2115. The lifting and translating motor 232 is mounted on the lifting column 231, the lifting and translating rail 235 is fixedly mounted on the lifting column 231, the lifting and translating lead screw 233 is mounted on the output end of the longitudinal translating motor 2112, the lifting and translating slider 234 slides along the lifting and translating rail 235, the transverse translating slider and the lifting and translating lead screw 233 are connected by a threaded pair, the lifting and translating slider 234 is fixedly mounted on the transverse translating slider, the first print head 4 is mounted on the lifting column 231, the lifting and translating motor 232 drives the lifting and translating lead screw 233 to rotate, thereby driving the lifting and translating slider 234 to slide along the lifting and translating rail 235.

[0038] One of the longitudinal moving frames has a support frame 7 installed on its side, and a semi-circular wheel 71 is installed on the top of the support frame 7. An arc-shaped mounting groove is opened on the semi-circular wheel 71, and a camera base is installed at the arc-shaped mounting groove by bolts. A camera acquisition device 72 is installed on the camera base. The camera acquisition device 72 is used to capture the outline and position of the workpiece to provide data support for slicing.

[0039] The workpiece conveying device 3 includes a first rotary motor 31 and a second rotary motor 32 mounted on the frame 1. The rotation axis of the first rotary motor 31 is horizontal, and the second rotary motor 32 is mounted on the output end of the first rotary motor 31. The rotation axes of the first rotary motor 31 and the second rotary motor 32 are perpendicular to each other. The rotation of the first rotary motor 31 and the second rotary motor 32 causes the workpiece to rotate at any angle.

[0040] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. An ETPU particulate material 3D printer characterized by: The printer includes a frame, a printhead conveying device, a workpiece conveying device, and a first printhead. The printhead conveying device is mounted on the frame, and the first printhead is mounted on the output end of the printhead conveying device. The printhead conveying device drives the first printhead to perform three-dimensional motion. The workpiece conveying device is mounted on the frame and has two mutually perpendicular rotating shafts. The first printhead includes a first granular material inlet, a first water-based adhesive inlet, a first water-based catalyst inlet, and an adhesive-coated granule outlet. The printer also includes a second printhead and a printhead switching device. The printhead switching device is mounted on the output end of the printhead conveying device, and the second printhead is mounted on the printhead switching device. The printhead conveying device drives the printhead switching device to perform three-dimensional motion, and the printhead switching device slides along the printhead conveying device. The printhead switching device drives the second printhead to rise and fall. The first printhead includes a first screw, a first extrusion motor, a first printing base, a first extrusion head, and a first extrusion tube. The first printing base has a first feeding chamber, and the first extrusion motor is mounted on the first printing base. A first feed chamber has a first granular material inlet. A first screw is installed at the output end of a first extrusion motor and extends into the first feed chamber. A first extrusion tube is fixedly installed at the bottom of the first feed chamber of a first printing base and communicates with the first feed chamber. A first extrusion head is located at the end of the first extrusion tube. The first extrusion tube has a first water-based adhesive inlet and a first water-based catalyst inlet. The upper end of the first screw has a smooth section. A second print head includes a second screw, a second extrusion motor, a second printing base, a second extrusion port, and a second extrusion tube. A second feed chamber is provided on the second printing base. The second extrusion motor is installed on the second printing base. The second feed chamber has a second granular material inlet. A second screw is installed at the output end of the second extrusion motor and extends into the second feed chamber. The second extrusion tube is fixedly installed at the bottom of the second feed chamber of the second printing base and communicates with the second feed chamber. The second extrusion port is located at the end of the second extrusion tube. The second extrusion tube has a second water-based adhesive inlet and a second water-based catalyst inlet. The upper end of the second screw has a smooth section.

2. The ETPU granular material 3D printer according to claim 1, characterized in that: The printhead conveying device includes a longitudinal translation device, a lateral translation device, and a lifting translation device installed in sequence. The movement directions of the longitudinal translation device, the lateral translation device, and the lifting translation device are perpendicular to each other. The first printhead is mounted on the lifting translation device, and the longitudinal translation device is fixed on the frame.

3. The ETPU granular material 3D printer according to claim 2, characterized in that: The longitudinal translation device includes two parallel longitudinal conveying units. Each longitudinal conveying unit includes a longitudinal translation beam fixed on the frame, a longitudinal translation motor, a longitudinal translation screw, a longitudinal translation slider, and a longitudinal translation rail. The longitudinal translation motor is mounted on the longitudinal translation beam, the longitudinal translation rail is fixed on the longitudinal translation beam, the longitudinal translation screw is mounted on the output end of the longitudinal translation motor, the longitudinal translation slider slides along the longitudinal translation rail, and the longitudinal translation rail is connected to the longitudinal translation screw in a transmission manner. The two ends of the transverse translation device are respectively mounted on the two longitudinal translation sliders.

4. The ETPU particulate material 3D printer according to claim 2, characterized in that: The lateral translation device includes a lateral translation beam, a lateral translation motor, a lateral translation screw, a lateral translation slider, and a lateral translation rail, all mounted on a longitudinal translation device. The lateral translation motor is mounted on the lateral translation beam, the lateral translation rail is fixedly mounted on the lateral translation beam, the lateral translation screw is mounted on the output end of the lateral translation motor, the lateral translation slider slides along the lateral translation rail, and the lateral translation rail is connected to the lateral translation screw via a transmission. The lifting and lateral translation device is mounted on the longitudinal translation slider.

5. The ETPU particulate material 3D printer according to claim 2, characterized in that: The lifting and translating device includes a lifting column, a lifting and translating motor, a lifting and translating lead screw, a lifting and translating slider, and a lifting and translating rail. The lifting and translating motor is mounted on the lifting column, the lifting and translating rail is fixedly mounted on the lifting column, the lifting and translating lead screw is mounted on the output end of the lifting and translating motor, the lifting and translating slider slides along the lifting and translating rail, the lateral translation device is connected to the lifting and translating lead screw, the lifting and translating slider is fixedly mounted on the lateral translation slider, and the first print head is mounted on the lifting column.

6. The ETPU particulate material 3D printer according to claim 3, characterized in that: A support frame is installed on the side of one of the longitudinal beams, and a semi-circular wheel is installed on the top of the support frame. An arc-shaped mounting groove is opened on the semi-circular wheel, and a camera base is installed at the arc-shaped mounting groove by bolts. The camera acquisition device is installed on the camera base.

7. The ETPU particulate material 3D printer according to claim 1, characterized in that: The workpiece conveying device includes a first rotary motor and a second rotary motor mounted on a frame. The rotation axis of the first rotary motor is horizontal, and the second rotary motor is mounted on the output end of the first rotary motor. The rotation axes of the first rotary motor and the second rotary motor are perpendicular to each other.

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