Five-axis whole shoe 3D printer

Abstract

The invention relates to a five-axis whole shoe 3D printer, and belongs to the technical field of plastic molding, the five-axis whole shoe 3D printer comprises a rack, a printing head system, a printing head movement system, a shoe last system and a shoe last movement system, the shoe last system is mounted on the shoe last movement system, a plurality of negative pressure suction grooves are formed in the shoe last system, each negative pressure suction groove is communicated with a negative pressure pipe, and the printing head movement system is mounted on the rack. A negative pressure control sliding device is arranged on the negative pressure suction groove in a sliding mode, an airflow control electromagnet device is arranged on the printing head system, the negative pressure control sliding device comprises a negative pressure cover plate, a negative pressure traction plate, a negative pressure traction spring and a negative pressure opening electromagnet, and when the negative pressure traction spring is in a free state, the negative pressure opening electromagnet attracts the negative pressure cover plate to be separated from the negative pressure pipe. The airflow control electromagnet device and the negative pressure traction plate attract each other, when the airflow control electromagnet device and the negative pressure traction plate attract each other, negative pressure opens the electromagnet to be away from the negative pressure cover plate, the negative pressure suction grooves communicate with hot air pipes, and the binding force between the uppers and the soles is high.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic molding, and particularly to a five-axis whole-shoe 3D printer. Background Art

[0002] A shoe 3D printer is a device that directly converts a digital model into a physical shoe using 3D printing technology. This technology builds each part of the shoe by stacking materials layer by layer, thus enabling complex designs and customized production. In the future, the development trends of shoe 3D printers include higher printing accuracy, faster printing speed, a wider selection of materials, and more intelligent automated control.

[0003] When the existing 3D printer prints a shoe, the upper needs to be installed on the shoe last first, then the contour shape of the upper on the shoe last is scanned, and then path planning is carried out for sole printing. Since the temperature of the upper is relatively low during sole printing, it is difficult to ensure the bonding strength, and the shape of the upper may shift during printing, unable to stably ensure the bonding strength between the upper and the sole. Summary of the Invention

[0004] To overcome the technical defects existing in the prior art, the present invention provides a five-axis whole-shoe 3D printer with strong bonding strength between the upper and the sole.

[0005] The technical solution adopted by the present invention is as follows: a five-axis whole-shoe 3D printer, which includes a frame, a print head system, a print head motion system, a last system, and a last motion system. The print head motion system is installed on the frame, the print head system is installed on the print head motion system, the last motion system is installed on the frame, the last system is installed on the last motion system. A number of negative pressure suction grooves are provided on the last system, and each of the negative pressure suction grooves is connected to a negative pressure pipe. A negative pressure control sliding device is slidably provided on the negative pressure suction groove. An air flow control electromagnet device is provided on the print head system. The negative pressure control sliding device includes a negative pressure cover plate, a negative pressure traction plate, a negative pressure traction spring, and a negative pressure opening electromagnet. The negative pressure opening electromagnet is installed at the bottom of the negative pressure traction plate. The two ends of the negative pressure traction spring are respectively installed on the negative pressure traction plate and the last system. The acting direction of the negative pressure traction spring makes the negative pressure traction plate move towards the negative pressure pipe. When the negative pressure traction spring is in a free state, the negative pressure opening electromagnet attracts the negative pressure cover plate to separate from the negative pressure pipe. The air flow control electromagnet device and the negative pressure traction plate attract each other. When the air flow control electromagnet device and the negative pressure traction plate attract each other, the negative pressure traction plate rises to the upper limit position, and the negative pressure opening electromagnet moves away from the negative pressure cover plate. A limit pin is provided on the last system, and the limit pin restricts the negative pressure cover plate to lift and slide in the area above the negative pressure pipe. Each of the negative pressure suction grooves is connected to a hot air pipe, and the negative pressure traction plate is provided with a hot air blocking block adapted to the hot air pipe. When the air flow control electromagnet device and the negative pressure traction plate attract each other, the hot air blocking block separates from the hot air pipe.

[0006] Preferably, the print head motion system includes a print head transverse movement device and a print head lifting device. The print head transverse movement device is installed on the frame. The print head transverse movement device has a transverse movement end. The print head lifting device is installed on the transverse movement end. The print head lifting device has a lifting end. The print head system is installed on the transverse movement end.

[0007] Preferably, the print head transverse movement device includes a print head transverse movement motor, a print head transverse movement lead screw, a print head transverse movement slide rail, and a print head transverse movement slider. The print head transverse movement slider is slidably installed on the print head transverse movement slide rail. The print head transverse movement lead screw is installed at the output end of the print head transverse movement motor. The print head transverse movement lead screw and the print head transverse movement slider are in transmission connection through a screw pair. The print head transverse movement slider constitutes the lifting end.

[0008] Preferably, the print head lifting device includes a print head lifting motor, a print head lifting lead screw, a print head lifting slide rail, and a print head lifting slider. The print head lifting slider is slidably installed on the print head lifting slide rail. The print head lifting lead screw is installed at the output end of the print head lifting motor. The print head lifting lead screw and the print head lifting slider are in transmission connection through a screw pair. The print head lifting slider constitutes the lifting end.

[0009] Preferably, the last motion system includes a last longitudinal movement device, a last flipping device, and a last rotating device. The last longitudinal movement device is installed on the frame and has a last longitudinal movement end. The last flipping device is installed on the last longitudinal movement end and has a last flipping end. The last rotating device is installed on the last flipping end, and the last system is installed at the output end of the last rotating device.

[0010] Preferably, the last flipping device includes a last flipping motor and a last flipping arc plate. The last flipping motor is installed on the last longitudinal movement end. The last flipping arc plate has two mutually perpendicular mounting surfaces, and the two mounting surfaces are respectively used to mount the last flipping end and the last rotating device. The side of the last flipping arc plate close to the last flipping motor is wider than the side close to the last rotating device.

[0011] Preferably, the upper side of the negative pressure cover plate is adapted to the negative pressure opening electromagnet, and the lower side of the negative pressure cover plate is adapted to the negative pressure pipe.

[0012] Preferably, an electric heating device is provided at the top of the negative pressure traction plate.

[0013] The beneficial effects of the present invention are as follows: The print head motion system is installed on the frame, the print head system is installed on the print head motion system, and the print head motion system is used to drive the movement of the print head system. The last motion system is installed on the frame, the last system is installed on the last motion system, and the last motion system is used to drive the movement of the last system, so that the last system can approach the print head system at any angle and position.

[0014] A number of negative pressure suction grooves are provided on the last system, and each negative pressure suction groove is connected to a negative pressure pipe. A negative pressure control sliding device is slidably provided on the negative pressure suction groove. An air flow control electromagnet device is provided on the print head system. The negative pressure control sliding device includes a negative pressure cover plate, a negative pressure traction plate, a negative pressure traction spring, and a negative pressure opening electromagnet. The negative pressure opening electromagnet is installed at the bottom of the negative pressure traction plate. The two ends of the negative pressure traction spring are respectively installed on the negative pressure traction plate and the last system. The acting direction of the negative pressure traction spring makes the negative pressure traction plate move towards the negative pressure pipe. When the negative pressure traction spring is in a free state, that is, when the air flow control electromagnet device is away from the negative pressure traction plate, the negative pressure traction plate is at the lower extreme limit under the traction of the negative pressure traction spring. The negative pressure opening electromagnet attracts the negative pressure cover plate to separate from the negative pressure pipe, thereby firmly adsorbing the shoe upper fabric on the last system.

[0015] As printing progresses, the air flow control electromagnet device and the negative pressure traction plate attract each other. When they attract each other, the negative pressure traction plate rises to the upper limit position. The negative pressure opening electromagnet moves away from the negative pressure cover plate. There are limit pins on the last system. The limit pins restrict the negative pressure cover plate from lifting and sliding in the area above the negative pressure pipe. After the negative pressure traction plate rises to the upper limit position, the limit pins hold the negative pressure cover plate until the attraction between the negative pressure opening electromagnet and the negative pressure cover plate decreases. The negative pressure cover plate falls under its own gravity and seals the negative pressure pipe again. The negative pressure suction grooves are all connected to hot air pipes. The negative pressure traction plate is provided with hot air blocking blocks adapted to the hot air pipes. When the air flow control electromagnet device and the negative pressure traction plate attract each other, the hot air blocking blocks separate from the hot air pipes, and then hot air is blown out when the print head system approaches to preheat the shoe upper. The air flow control electromagnet device is used to control the lifting of the negative pressure traction plate, and thus control the opening and closing of the negative pressure pipe and the hot air pipe. When the print head system is printing, the air flow control electromagnet device closes the negative pressure pipe and opens the hot air pipe, and then preheats the printing position, and the bonding force between the shoe upper and the sole is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the present invention.

[0017] Figure 2 It is a schematic diagram of the installation relationship between the print head system and the last system.

[0018] Figure 3 It is a schematic cross-sectional view of the last system in the preheating state.

[0019] Figure 4 It is a schematic cross-sectional view of the last system in the state of adsorbing the shoe upper fabric.

[0020] DESCRIPTION OF THE REFERENCE NUMERALS: 1. Frame; 2. Print head system; 21. Air flow control electromagnet device; 3. Print head movement system; 31. Print head transverse movement device; 32. Print head lifting device; 4. Last system; 41. Negative pressure suction groove; 42. Negative pressure pipe; 43. Negative pressure control sliding device; 431. Negative pressure cover plate; 432. Negative pressure traction plate; 4321. Hot air blocking block; 433. Negative pressure traction spring; 434. Negative pressure opening electromagnet; 435. Electric heating device; 436. Limit pin; 44. Hot air pipe; 5. Last movement system; 51. Last longitudinal movement device; 52. Last flipping device; 53. Last rotary device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The present invention will be further described below with reference to the accompanying drawings: As Figure 1 —Figure 4 As shown in the figure, this embodiment provides a five-axis whole-shoe 3D printer, which includes a frame 1, a print head system 2, a print head motion system 3, a last system 4, and a last motion system 5. The print head motion system 3 is installed on the frame 1, the print head system 2 is installed on the print head motion system 3, and the print head motion system 3 is used to drive the print head system 2 to move. The last motion system 5 is installed on the frame 1, the last system 4 is installed on the last motion system 5, and the last motion system 5 is used to drive the last system 4 to move, so that the last system 4 can approach the print head system 2 at any angle and position.

[0022] A number of negative pressure suction grooves 41 are provided on the last system 4, and each negative pressure suction groove 41 is communicated with a negative pressure pipe 42. A negative pressure control sliding device 43 is slidably provided on the negative pressure suction groove 41. An air flow control electromagnet device 21 is provided on the print head system 2. The negative pressure control sliding device 43 includes a negative pressure cover plate 431, a negative pressure traction plate 432, a negative pressure traction spring 433, and a negative pressure opening electromagnet 434. The negative pressure opening electromagnet 434 is installed at the bottom of the negative pressure traction plate 432. The two ends of the negative pressure traction spring 433 are respectively installed on the negative pressure traction plate 432 and the last system 4. The acting direction of the negative pressure traction spring 433 makes the negative pressure traction plate 432 move towards the negative pressure pipe 42. As Figure 4 shown in the figure, when the negative pressure traction spring 433 is in a free state, that is, when the air flow control electromagnet device 21 is away from the negative pressure traction plate 432, the negative pressure traction plate 432 is at the lower limit position under the traction of the negative pressure traction spring 433, and the negative pressure opening electromagnet 434 attracts the negative pressure cover plate 431 to separate from the negative pressure pipe 42, thereby firmly adsorbing the shoe upper fabric on the last system 4.

[0023] As Figure 3As shown in the figure, as printing progresses, the air flow control electromagnet device 21 and the negative pressure traction plate 432 attract each other. When the air flow control electromagnet device 21 and the negative pressure traction plate 432 attract each other, the negative pressure traction plate 432 rises to the upper limit position. When the negative pressure traction plate 432 rises to the upper limit position, the negative pressure opening electromagnet 434 moves away from the negative pressure cover plate 431. There is a limit pin 436 on the last system 4. The limit pin 436 restricts the lifting and sliding of the negative pressure cover plate 431 in the area above the negative pressure pipe 42. After the negative pressure traction plate 432 rises to the upper limit position, the limit pin 436 holds the negative pressure cover plate 431 until the attraction between the negative pressure opening electromagnet 434 and the negative pressure cover plate 431 decreases, and the negative pressure cover plate 431 falls under its own gravity and seals the negative pressure pipe 42 again. The negative pressure pipe 42 is connected to a negative pressure fan, and the negative pressure suction grooves 41 are all connected to a hot air pipe 44. The negative pressure traction plate 432 is provided with a hot air blocking block 4321 adapted to the hot air pipe 44. When the air flow control electromagnet device 21 and the negative pressure traction plate 432 attract each other, the hot air blocking block 4321 disengages from the hot air pipe 44, and then hot air is blown out when the print head system 2 approaches, preheating the shoe upper. The air flow control electromagnet device 21 is used to control the lifting of the negative pressure traction plate 432, and thus control the opening and closing of the negative pressure pipe 42 and the hot air pipe 44. When the print head system 2 is printing, the air flow control electromagnet device 21 closes the negative pressure pipe 42 and opens the hot air pipe 44, thereby preheating the printing position, and the bonding force between the shoe upper and the sole is strong.

[0024] In short, hot air is blown out from the negative pressure suction grooves 41 at the printing position of the print head system 2 for preheating, while the negative pressure suction grooves 41 where the print head system 2 does not approach firmly adsorb the shoe upper to prevent the shoe upper from shifting.

[0025] Specifically, the print head movement system 3 includes a print head lateral movement device 31 and a print head lifting device 32. The print head lateral movement device 31 is installed on the frame 1. The print head lateral movement device 31 has a lateral movement end. The print head lifting device 32 is installed on the lateral movement end. The print head lifting device 32 has a lifting end. The print head system 2 is installed on the lifting end. The movement directions of the lateral movement end and the lifting end are perpendicular to each other, thereby realizing the lateral movement and lifting of the print head system 2.

[0026] Specifically, the print head lateral movement device 31 includes a print head lateral movement motor, a print head lateral movement lead screw, a print head lateral movement slide rail, and a print head lateral movement slider. The print head lateral movement slider is slidably installed on the print head lateral movement slide rail. The print head lateral movement lead screw is installed at the output end of the print head lateral movement motor. The print head lateral movement lead screw is in threaded transmission connection with the print head lateral movement slider. The print head lateral movement slider constitutes the lateral movement end. The print head traction lateral movement motor to act, thereby realizing the lateral movement of the print head system 2.

[0027] Specifically, the print head lifting device 32 includes a print head lifting motor, a print head lifting lead screw, a print head lifting slide rail, and a print head lifting slider. The print head lifting slider is slidably installed on the print head lifting slide rail. The print head lifting lead screw is installed at the output end of the print head lifting motor. The print head lifting lead screw and the print head lifting slider are connected by a screw pair for transmission. The print head lifting slider constitutes the lifting end. When the print head lifting motor operates, the lifting of the print head system 2 is realized.

[0028] Specifically, the last movement system 5 includes a last longitudinal movement device 51, a last flipping device 52, and a last rotating device 53. The last longitudinal movement device 51 is installed on the frame 1 and the last longitudinal movement device 51 has a last longitudinal movement end. The last flipping device 52 is installed on the last longitudinal movement end. The last flipping device 52 has a last flipping end. The last rotating device 53 is installed on the last flipping end. The last flipping device 52 and the last rotating device 53 are used to enable the last system 4 to approach the print head system 2 from any angle. The last system 4 is installed at the output end of the last rotating device 53.

[0029] Specifically, the last flipping device 52 includes a last flipping motor and a last flipping arc plate. The last flipping motor is installed on the last longitudinal movement end. The last flipping arc plate has two mutually perpendicular mounting surfaces. The two mounting surfaces are respectively used to mount the last flipping end and the last rotating device 53. The side of the last flipping arc plate close to the last flipping motor is wider than the side close to the last rotating device 53. Due to the last flipping arc plate having two mutually perpendicular mounting surfaces, it is ensured that the last system 4 can approach the print head system 2 from any angle.

[0030] Specifically, the upper side of the negative pressure cover plate 431 is adapted to the negative pressure opening electromagnet 434. The lower side of the negative pressure cover plate 431 is adapted to the negative pressure pipe 42. The lifting of the negative pressure cover plate 431 further realizes the opening and closing of the negative pressure pipe 42.

[0031] Specifically, an electric heating device 435 is provided at the top of the negative pressure traction plate 432 for more sufficient preheating of the shoe upper.

[0032] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. Five-axis whole shoe 3D printer, characterized by: The invention comprises a frame, a print head system, a print head movement system, a last system and a last movement system, wherein the print head movement system is installed on the frame, the print head system is installed on the print head movement system, the last movement system is installed on the frame, the last system is installed on the last movement system, a plurality of negative pressure suction grooves are provided on the last system, each of the negative pressure suction grooves is connected with a negative pressure pipe, a negative pressure control sliding device is slidably provided on the negative pressure suction groove, an airflow control electromagnet device is provided on the print head system, the negative pressure control sliding device comprises a negative pressure cover plate, a negative pressure traction plate, a negative pressure traction spring and a negative pressure opening electromagnet, the negative pressure opening electromagnet is installed on the bottom of the negative pressure traction plate, and the two ends of the negative pressure traction spring are respectively installed on the negative pressure traction plate. On the plate and last system, the action direction of the negative pressure traction spring makes the negative pressure traction plate move toward the direction of the negative pressure tube. When the negative pressure traction spring is in a free state, the negative pressure opening electromagnet attracts the negative pressure cover plate to separate from the negative pressure tube, and the airflow control electromagnet device and the negative pressure traction plate attract each other. When the airflow control electromagnet device and the negative pressure traction plate attract each other, the negative pressure traction plate rises to the upper limit position, and the negative pressure opening electromagnet moves away from the negative pressure cover plate. The last system is provided with a limit pin, and the limit pin limits the negative pressure cover plate from lifting and sliding in the area on the upper side of the negative pressure tube. The negative pressure suction grooves are all connected to a hot air pipe, and the negative pressure traction plate is provided with a hot air sealing block that matches the hot air pipe. When the airflow control electromagnet device and the negative pressure traction plate attract each other, the hot air sealing block separates from the hot air pipe.

2. The five-axis whole shoe 3D printer according to claim 1, characterized in that: The print head movement system includes a print head lateral movement device and a print head lifting device, wherein the print head lateral movement device is installed on a frame, the print head lateral movement device has a lateral movement end, the print head lifting device is installed on the lateral movement end, the print head lifting device has a lifting end, and the print head system is installed on the lateral movement end.

3. The five-axis whole shoe 3D printer according to claim 2, characterized in that: The print head transverse movement device includes a print head transverse movement motor, a print head transverse movement screw, a print head transverse movement slide rail and a print head transverse movement slider. The print head transverse movement slider is slidably installed on the print head transverse movement slide rail. The print head transverse movement screw is installed at the output end of the print head transverse movement motor. The print head transverse movement screw is connected to the print head transverse movement slider through a threaded pair transmission. The print head transverse movement slider constitutes a lifting end.

4. The five-axis whole shoe 3D printer according to claim 2, characterized in that: The print head lifting device includes a print head lifting motor, a print head lifting screw, a print head lifting slide rail and a print head lifting slider. The print head lifting slider is slidably installed on the print head lifting slide rail. The print head lifting screw is installed at the output end of the print head lifting motor. The print head lifting screw is connected to the print head lifting slider through a threaded pair transmission. The print head lifting slider constitutes a lifting end.

5. The five-axis whole shoe 3D printer according to claim 1, characterized in that: The last motion system includes a last longitudinal movement device, a last turning device and a last rotating device. The last longitudinal movement device is installed on the frame and has a last longitudinal movement end. The last turning device is installed on the last longitudinal movement end. The last turning device has a last turning end. The last rotating device is installed on the last turning end. The last system is installed at the output end of the last rotating device.

6. The five-axis whole shoe 3D printer according to claim 5, characterized in that: The last flipping device includes a last flipping motor and a last flipping arc plate. The last flipping motor is installed on the longitudinal movement end of the last. The last flipping arc plate has two mutually perpendicular mounting surfaces. The two mounting surfaces are respectively used to mount the last flipping end and the last rotating device. The side of the last flipping arc plate close to the last flipping motor is wider than the side close to the last rotating device.

7. The five-axis whole shoe 3D printer according to claim 1, characterized in that: The upper side of the negative pressure cover plate is adapted to the negative pressure opening electromagnet, and the lower side of the negative pressure cover plate is adapted to the negative pressure tube.

8. The five-axis whole shoe 3D printer according to claim 1, characterized in that: An electric heating device is arranged on the top of the negative pressure traction plate.

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