Five-axis whole-shoe 3D printer

Abstract

The present invention relates to a five-axis whole-shoe 3D printer, belonging to the technical field of plastic molding. It includes a frame, a print head system, a print head motion system, a last system, and a last motion system. The last system is installed on the last motion system. The last system is provided with a number of negative pressure suction grooves, and each negative pressure suction groove is connected to a negative pressure pipe. A negative pressure control sliding device is slidably arranged on the negative pressure suction groove. An air flow control electromagnet device is arranged 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. 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 opening electromagnet moves away from the negative pressure cover plate. Each negative pressure suction groove is connected to a hot air pipe, and the bonding force between the shoe upper and the sole is strong.

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, including 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 plurality of negative pressure suction grooves are provided on the last system, and each negative pressure suction groove is communicated with 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 disengage 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 nail is provided on the last system, and the limit nail restricts the negative pressure cover plate to lift and slide in the area above the negative pressure pipe. Each negative pressure suction groove is communicated with 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 disengages 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 thread 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 thread pair. The print head lifting slider constitutes the lifting end.

[0009] Preferably, 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 the last longitudinal movement device 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, 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 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, and 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 tube.

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

[0013] The beneficial effects of the present invention are:

[0014] The print head motion system is installed on the frame, the print head system is installed on the print head motion system, the print head motion system is used to drive the print head system to move, the last motion system is installed on the frame, the last system is installed on the last motion system, the last motion system is used to drive the last system to move, thereby making the last system close to the print head system at any angle and position.

[0015] The last system is provided with a plurality of negative pressure suction grooves, each of which is connected to a negative pressure tube, 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 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 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, that is, when the airflow control electromagnet device is away from the negative pressure traction plate, the negative pressure traction plate is in the lower limit position under the traction of the negative pressure traction spring, and the negative pressure opening electromagnet attracts the negative pressure cover plate to separate from the negative pressure tube, thereby firmly adsorbing the upper fabric on the last system.

[0016] As printing progresses, 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. 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 disengage 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

[0017] Figure 1 It is a schematic structural diagram of the present invention.

[0018] Figure 2 It is a schematic diagram of the installation relationship between the print head system and the last system.

[0019] Figure 3 It is a schematic cross-sectional view of the last system in the preheating state.

[0020] Figure 4 It is a schematic cross-sectional view of the last system in the state of adsorbing the shoe upper fabric.

[0021] DESCRIPTION OF THE REFERENCE NUMERALS:

[0022] 1. Frame;

[0023] 2. Print head system; 21. Air flow control electromagnet device;

[0024] 3. Print head movement system; 31. Print head transverse movement device; 32. Print head lifting device;

[0025] 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;

[0026] 5. Last movement system; 51. Last longitudinal movement device; 52. Last flipping device; 53. Last rotary device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The present invention will be further described below in conjunction with the accompanying drawings:

[0028] As Figure 1 — Figure 4 shown, 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.

[0029] A number of negative pressure suction grooves 41 are provided on the last system 4, and each negative pressure suction groove 41 is connected to 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, when the negative pressure traction spring 433 is in a free state, that is, when the air flow control electromagnet device 21 is far away from the negative pressure traction plate 432, the negative pressure traction plate 432 is in 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.

[0030] As Figure 3As shown, as printing proceeds, the airflow control electromagnet device 21 and the negative pressure traction plate 432 attract each other. When the airflow 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, and the negative pressure opening electromagnet 434 moves away from the negative pressure cover plate 431. The last system 4 is provided with a limiting nail 436. The limiting nail 436 limits the negative pressure cover plate 431 from sliding up and down in the area above the negative pressure tube 42. After the negative pressure traction plate 432 rises to the upper limit position, the limiting nail 436 pulls 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, sealing the negative pressure tube 4 again. 2. The negative pressure pipe 42 is connected to a negative pressure fan, and the negative pressure suction slots 41 are 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 airflow control electromagnet device 21 and the negative pressure traction plate 432 attract each other, the hot air blocking block 4321 is separated from the hot air pipe 44, and then when the print head system 2 approaches, hot air is blown out to preheat the shoe upper. The airflow control electromagnet device 21 is used to control the lifting and lowering of the negative pressure traction plate 432, and then control the opening and closing of the negative pressure pipe 42 and the hot air pipe 44. When the print head system 2 prints, the airflow control electromagnet device 21 closes the negative pressure pipe 42 and opens the hot air pipe 44, and then preheats the printing position, and the shoe upper and the sole have a strong bonding force.

[0031] In short, the negative pressure suction slot 41 at the printing position of the print head system 2 blows out hot air for preheating, while the negative pressure suction slot 41 not close to the print head system 2 firmly absorbs the shoe upper to prevent the shoe upper from moving.

[0032] Specifically, the print head movement system 3 includes a print head transverse movement device 31 and a print head lifting device 32. The print head transverse movement device 31 is installed on the frame 1. The print head transverse movement device 31 has a transverse movement end. The print head lifting device 32 is installed on the transverse 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 transverse movement end and the lifting end are perpendicular to each other, thereby realizing the transverse movement and lifting of the print head system 2.

[0033] Specifically, the print head transverse movement device 31 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 connected by a threaded pair transmission. The print head transverse movement slider constitutes the transverse movement end. The print head pulls the transverse movement motor to move and thereby realizes the transverse movement of the print head system 2.

[0034] 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 mounted 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 is in threaded transmission connection with the print head lifting slider. The print head lifting slider constitutes the lifting end. The print head lifting motor operates to realize the lifting of the print head system 2.

[0035] Specifically, the last motion system 5 includes a last longitudinal movement device 51, a last flipping device 52, and a last rotary 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 rotary device 53 is installed on the last flipping end. The last flipping device 52 and the last rotary device 53 are used to realize the last system 4 approaching the print head system 2 from any angle. The last system 4 is installed at the output end of the last rotary device 53.

[0036] 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 rotary 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 rotary device 53. Since the last flipping arc plate has two mutually perpendicular mounting surfaces, it ensures that the last system 4 can approach the print head system 2 from any angle.

[0037] 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 realizes the opening and closing of the negative pressure pipe 42.

[0038] 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.

[0039] 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. These changes and improvements 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 in that, It 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 away 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 move up and down 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 moves away from the hot air pipe.

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

3. The five-axis whole-shoe 3D printer according to claim 2, wherein The print head lateral movement device 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 and the print head lateral movement slider are in transmission connection through a screw pair. The print head lateral movement slider constitutes the lifting end.

4. The five-axis whole-shoe 3D printer according to claim 2, wherein, 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.

5. The five-axis whole-shoe 3D printer according to claim 1, wherein, The last movement 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. 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, wherein, 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 for mounting 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, wherein 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.

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

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