3D printing equipment for preparing plastic shoe tree rough blank

Abstract

The utility model discloses 3D printing equipment for preparing a plastic shoe tree rough blank, which comprises an equipment bottom plate, a control device, a three-axis control arm, a glue squeezing gun and a heating plate, the heating plate is arranged on the surface of the equipment bottom plate, and a printing position is arranged on the surface of the heating plate; the three-axis control arm is installed on the equipment bottom plate and comprises an X-axis driving assembly, a Y-axis driving assembly and a Z-axis driving assembly which are sequentially connected, and the Z-axis driving assembly is provided with a gun base; the glue squeezing gun is assembled on the gun seat, is positioned right above the printing position and is externally connected with a material supply device; the control device is electrically connected with the three-axis control arm, the heating plate and the material supply device. The preparation of a shoe tree mold is avoided, the plastic shoe tree rough blank is prepared by utilizing 3d printing, and the method can be suitable for customizing a complex milling tool.

Description

Technical Field

[0001] The utility model relates to the technical field of shoe last manufacturing equipment, in particular to a 3D printing device for preparing a plastic shoe last blank. Background Art

[0002] At present, plastic shoe last blanks are mostly prepared by mold forming. When preparing shoe last blanks of different specifications and sizes, the shoe last mold needs to be re-customized, and the preparation cost is high. In addition, when the shoe last blank is processed by machine tools, it needs to be milled. In order to meet the shoe last tooling, the top of the shoe last needs to be processed with a tooling structure. For example, the tooling connection part is assembled on the top of the shoe last blank by fixing it with bolts or the like, and positioning is required between the tooling connection part and the shoe last blank to ensure the tooling accuracy of the shoe last blank. Of course, the tooling connection part can also be formed on the top of the shoe last blank by mold forming. However, since the structure of the tooling connection part is relatively complex and the molding accuracy requirement is also high, the shoe last also needs to be milled before tooling. In actual application, there are many inconveniences, so it is necessary to improve it. Utility Model Content

[0003] In response to the shortcomings of the existing technology, the purpose of this utility model is to provide a device that can 3D print out plastic shoe last blanks, eliminating mold costs, and can customize shoe last blanks of different sizes and tooling connections according to production needs. It has high molding precision and does not require tooling milling.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a 3D printing device for preparing plastic shoe last blanks, including a device base plate, a control device, a three-axis control arm, a glue extrusion gun and a heating plate, the heating plate is arranged on the surface of the device base plate, and the surface of the heating plate is provided with a printing position; the three-axis control arm is installed on the device base plate, and the three-axis control arm includes an X-axis drive assembly, a Y-axis drive assembly and a Z-axis drive assembly connected in sequence, wherein the Z-axis drive assembly is provided with a gun seat; the glue extrusion gun is assembled on the gun seat, the glue extrusion gun is located directly above the printing position, and is externally connected to a material supply device; the control device is electrically connected to the three-axis control arm, the heating plate and the material supply device respectively.

[0005] In a further technical solution, the X-axis drive assembly includes two X-axis electric cylinders arranged parallel to each other, and the two X-axis electric cylinders are respectively fixedly installed on both sides of the base plate of the equipment, and the X-axis electric cylinder has a movable X-axis movable seat, and a Y-axis bracket is fixedly installed on the top of the X-axis movable seat; the Y-axis drive assembly includes two Y-axis electric cylinders arranged parallel to each other, and the two Y-axis electric cylinders are respectively fixedly installed on the corresponding Y-axis brackets, and the Y-axis electric cylinder has a movable Y-axis movable seat, and a Z-axis bracket is connected between the two Y-axis movable seats; the Z-axis drive assembly includes a Z-axis electric cylinder, the Z-axis electric cylinder is arranged at the bottom of the Z-axis bracket, the Z-axis electric cylinder has a movable Z-axis movable seat, and the gun seat is fixed to the bottom of the Z-axis movable seat.

[0006] In a further technical solution, a connecting plate is provided on the top surface of the gun seat, a locking hole is provided in the middle position of the connecting plate, and the inner wall of the lock hole is inclined; a connecting groove is provided on the bottom surface of the Z-axis movable seat, and the connecting groove matches the connecting plate. When the gun seat is assembled on the Z-axis movable seat, the top surface of the gun seat abuts against the bottom surface of the Z-axis movable seat, and the connecting plate is movably inserted into the connecting groove; a pin hole is provided on one side of the Z-axis movable seat, the pin hole is vertically connected to the connecting groove, and is aligned with the lock hole, a locking pin rod is inserted into the inside of the pin hole, and a pin part is formed on the end of the locking pin rod, the outer diameter of the pin part gradually decreases from the inside to the outside, and the outer wall of the pin part abuts against the inner wall of the lock hole.

[0007] In a further technical solution, an outer wall of the locking pin is formed with an external thread; an internal thread is formed near the opening of the latch hole, and the locking pin is threadedly connected to the latch hole.

[0008] In a further technical solution, an extrusion channel is opened inside the glue extrusion gun, and a discharge channel is opened inside the gun seat, which is connected to the extrusion channel; a feed connection part is provided on the side of the gun seat, which is connected to the discharge channel and an external material supply device.

[0009] In a further technical solution, the gun seat is made of a heat-conducting metal material, and the gun seat is provided with a heating device, which conducts heat to the discharge channel through the gun seat.

[0010] In a further technical solution, a 3D projection camera is provided at the bottom of the gun mount, and the 3D projection camera signal is connected to the control device.

[0011] In a further technical solution, the heating plate is overlapped with a printing plate, a heat conducting plate, a heating layer, an insulating heat insulating plate and a support plate from top to bottom, wherein the heating layer includes a graphene heating film, a wire and a wiring part, the wires are respectively connected to the graphene heating film and the wiring part, the edge of the bottom surface of the graphene heating film is fixed to the insulating heat insulating plate by a high-temperature resistant adhesive, and a gap is left between the graphene heating film and the insulating heat insulating plate; the upper surface of the graphene heating film is tightly fixed to the bottom surface of the heat conducting plate by a thermal conductive adhesive.

[0012] In a further technical solution, the heat conducting plate and the printing plate are fixed by heat conducting glue, and the surface heating temperature of the printing plate is set to 50-120 degrees Celsius.

[0013] After adopting the above structure, the advantages of the present invention compared with the existing technology are: the present invention provides a 3D printing device for preparing plastic shoe last blanks, realizes the 3D printing production of plastic shoe last blanks, eliminates the customization cost of molds, is suitable for the customization of tooling connection parts for different production needs, has high molding precision, reduces the processing volume of tooling milling, reduces production costs, and improves production efficiency; the gun seat quick-loading structure composed of a pin structure is convenient for replacing gun seats and glue guns of different specifications, and ensures that the extrusion port of the glue gun can be in the standard position; the heating plate composed of a composite structure has the advantages of uniform heating and rapid heating, and can ensure that during the 3D printing process, adhesion is generated between the shoe last blank and the heating plate, avoiding the shoe last blank from loosening before the printing task is completed, and improving the printing precision of the shoe last blank. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 It is a structural diagram of the present utility model.

[0016] Figure 2 It is a structural diagram of the gun mount in the present utility model.

[0017] Figure 3 It is a structural schematic diagram of the heating plate in the present utility model. DETAILED DESCRIPTION

[0018] The following are merely preferred embodiments of the present invention and do not limit the scope of protection of the present invention.

[0019] like Figures 1 to 3 As shown, a 3D printing device for preparing plastic shoe last blanks includes a device base plate, a control device, a three-axis control arm, a glue extrusion gun 1 and a heating plate 5. The heating plate 5 is arranged on the surface of the device base plate, and a printing position is provided on the surface of the heating plate 5; the three-axis control arm is installed on the device base plate, and the three-axis control arm includes an X-axis drive assembly, a Y-axis drive assembly and a Z-axis drive assembly connected in sequence, wherein the Z-axis drive assembly is provided with a gun seat 11; the glue extrusion gun 1 is assembled on the gun seat 11, and the glue extrusion gun 1 is located directly above the printing position and is externally connected to a material supply device; the control device is electrically connected to the three-axis control arm, the heating plate 5 and the material supply device respectively.

[0020] It realizes the 3D printing production of plastic shoe last blanks, eliminating the cost of mold customization. It is suitable for the customization of tooling connection parts for different production needs. It has high molding precision, reduces the processing volume of tooling milling, reduces production costs, and improves production efficiency.

[0021] Specifically, the X-axis drive assembly includes two X-axis electric cylinders arranged parallel to each other, and the two X-axis electric cylinders are respectively fixedly installed on both sides of the base plate of the equipment. The X-axis electric cylinder has a movable X-axis movable seat 4, and a Y-axis bracket is fixedly installed on the top of the X-axis movable seat 4; the Y-axis drive assembly includes two Y-axis electric cylinders arranged parallel to each other, and the two Y-axis electric cylinders are respectively fixedly installed on the corresponding Y-axis brackets. The Y-axis electric cylinder has a movable Y-axis movable seat 3, and a Z-axis bracket is connected between the two Y-axis movable seats 3; the Z-axis drive assembly includes a Z-axis electric cylinder, which is arranged at the bottom of the Z-axis bracket. The Z-axis electric cylinder has a movable Z-axis movable seat 2, and the gun seat 11 is fixed to the bottom of the Z-axis movable seat 2.

[0022] The three-axis control arm with a gantry structure has better stability and control accuracy, which can further improve the yield rate of shoe last printing and reduce the difficulty of milling.

[0023] Specifically, a connecting plate 111 is provided on the top surface of the gun seat 11, and a locking hole 112 is provided in the middle position of the connecting plate 111, and the inner wall of the locking hole 112 is inclined; a connecting groove 22 is provided on the bottom surface of the Z-axis movable seat 2, and the connecting groove 22 matches the connecting plate 111. When the gun seat 11 is assembled on the Z-axis movable seat 2, the top surface of the gun seat 11 is against the bottom surface of the Z-axis movable seat 2, and the connecting plate 111 is movably inserted into the connecting groove 22; a latch channel 21 is provided on one side of the Z-axis movable seat 2, and the latch channel 21 is vertically connected to the connecting groove 22 and aligned with the locking hole 112. A locking pin rod 23 is inserted into the inside of the latch channel 21, and a latch portion 231 is formed on the end of the locking pin rod 23. The outer diameter of the latch portion 231 gradually decreases from the inside to the outside, and the outer wall of the latch portion 231 abuts against the inner wall of the locking hole 112.

[0024] The gun holder quick-install structure composed of a latch structure facilitates the replacement of gun holders 11 and glue extruding guns 1 of different specifications, and ensures that the extrusion port of the glue extruding gun 1 can be in a standard position.

[0025] Specifically, an outer wall of the locking pin 23 is formed with an external thread; an internal thread is formed near the opening of the latch hole 21 , and the locking pin 23 is threadedly connected to the latch hole 21 .

[0026] Specifically, an extrusion channel 10 is opened inside the glue extrusion gun 1, and a discharge channel is opened inside the gun base 11, which is connected to the extrusion channel 10; a feed connection part 101 is provided on the side of the gun base 11, which is connected to the discharge channel and an external material supply device.

[0027] Specifically, the gun seat 11 is made of a heat-conducting metal material. The gun seat 11 is provided with a heating device, and the heating device conducts heat to the discharge channel through the gun seat 11 .

[0028] Specifically, a 3D projection camera 12 is provided at the bottom of the gun mount 11, and the signal of the 3D projection camera 12 is connected to the control device. The 3D projection camera 12 can output synchronous images during the shoe last printing process, making it convenient for the operator to observe the printing progress and error of the shoe last.

[0029] Specifically, the heating plate 5 is stacked, from top to bottom, with a printing plate 51, a heat-conducting plate 52, a heating layer 53, an insulating heat-insulating plate 54, and a support plate 55. The heating layer includes a graphene heating film, wires, and a connection portion. The wires are connected to the graphene heating film and the connection portion, respectively. The edge of the bottom surface of the graphene heating film is fixed to the insulating heat-insulating plate 54 with a high-temperature resistant adhesive, with a gap between the graphene heating film and the insulating heat-insulating plate 54. The top surface of the graphene heating film is tightly fixed to the bottom surface of the heat-conducting plate 52 with thermally conductive adhesive. The heat-conducting plate 52 and the printing plate 51 are fixed with thermally conductive adhesive, and the surface heating temperature of the printing plate 51 is set to 50-120 degrees Celsius.

[0030] The composite heating plate structure composed of graphene heating film has the advantages of uniform heating and rapid temperature rise. It can ensure that during the 3D printing process, adhesion is generated between the shoe last blank and the heating plate 5, preventing the shoe last blank from loosening before the printing task is completed, thereby improving the printing accuracy of the shoe last blank.

[0031] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. A 3D printing device for preparing a rough plastic shoe last, characterized by: The invention comprises an equipment base plate, a control device, a three-axis control arm, a glue extrusion gun (1) and a heating plate (5), wherein the heating plate (5) is arranged on the surface of the equipment base plate, and a printing position is arranged on the surface of the heating plate (5); the three-axis control arm is installed on the equipment base plate, and the three-axis control arm comprises an X-axis drive component, a Y-axis drive component and a Z-axis drive component which are connected in sequence, wherein the Z-axis drive component is provided with a gun seat (11); the glue extrusion gun (1) is assembled on the gun seat (11), and the glue extrusion gun (1) is located directly above the printing position and is externally connected to a material supply device; the control device is electrically connected to the three-axis control arm, the heating plate (5) and the material supply device respectively. The X-axis drive assembly includes two X-axis electric cylinders arranged in parallel with each other, the two X-axis electric cylinders are fixedly installed on both sides of the bottom plate of the equipment, the X-axis electric cylinder has a movable X-axis movable seat (4), and a Y-axis bracket is fixedly installed on the top of the X-axis movable seat (4); the Y-axis drive assembly includes two Y-axis electric cylinders arranged in parallel with each other, the two Y-axis electric cylinders are fixedly installed on the corresponding Y-axis brackets, the Y-axis electric cylinder has a movable Y-axis movable seat (3), and a Z-axis bracket is connected between the two Y-axis movable seats (3); the Z-axis drive assembly includes a Z-axis electric cylinder, the Z-axis electric cylinder is arranged at the bottom of the Z-axis bracket, the Z-axis electric cylinder has a movable Z-axis movable seat (2), and the gun seat (11) is fixed to the bottom of the Z-axis movable seat (2). The top surface of the gun seat (11) is provided with a connecting plate (111), the middle position of the connecting plate (111) is provided with a lock hole (112), and the inner wall of the lock hole (112) is inclined; the bottom surface of the Z-axis movable seat (2) is provided with a connecting groove (22), and the connecting groove (22) matches the connecting plate (111). When the gun seat (11) is assembled on the Z-axis movable seat (2), the top surface of the gun seat (11) is against the bottom surface of the Z-axis movable seat (2), and the connecting plate (111) is movably plugged into the connecting groove (22); a latch hole (22) is provided on one side of the Z-axis movable seat (2). 21), the latch channel (21) is vertically connected to the connecting groove (22) and aligned with the lock hole (112), a locking pin rod (23) is inserted into the interior of the latch channel (21), and the outer wall of the locking pin rod (23) is formed with an external thread; the latch channel (21) is provided with an internal thread near the opening, and the locking pin rod (23) is threadedly connected to the latch channel (21); the end of the locking pin rod (23) is formed with a latch portion (231), the outer diameter of the latch portion (231) gradually decreases from the inside to the outside, and the outer wall of the latch portion (231) is in contact with the inner wall of the lock hole (112).

2. The 3D printing device for preparing a rough plastic shoe last according to claim 1, characterized in that: The glue extrusion gun (1) is provided with an extrusion channel (10) inside, and the gun base (11) is provided with a discharge channel inside, which is connected to the extrusion channel (10); a feed connection part (101) is provided on the side of the gun base (11), which is connected to the discharge channel and is externally connected to the material supply device.

3. The 3D printing device for preparing a rough plastic shoe last according to claim 2, characterized in that: The gun seat (11) is made of a heat-conducting metal material. The gun seat (11) is provided with a heating device, and the heating device conducts heat to the discharge channel through the gun seat (11).

4. The 3D printing device for preparing a rough plastic shoe last according to claim 3, characterized in that: A 3D projection camera (12) is provided at the bottom of the gun mount (11), and the signal of the 3D projection camera (12) is connected to the control device.

5. The 3D printing device for preparing a rough plastic shoe last according to claim 1, characterized in that: The heating plate (5) is provided with a printing plate (51), a heat conducting plate (52), a heating layer (53), an insulating heat insulating plate (54) and a supporting plate (55) in sequence from top to bottom. The heating layer includes a graphene heating film, a wire and a wiring part, the wires are respectively connected to the graphene heating film and the wiring part, the edge of the bottom surface of the graphene heating film is fixed to the insulating heat insulation board (54) by a high-temperature resistant adhesive, and a gap is left between the graphene heating film and the insulating heat insulation board (54); the upper surface of the graphene heating film is tightly fixed to the bottom surface of the heat conducting board (52) by a heat conducting adhesive.

6. The 3D printing device for preparing a rough plastic shoe last according to claim 5, characterized in that: The heat conducting plate (52) and the printing plate (51) are fixed by heat conducting glue, and the surface heating temperature of the printing plate (51) is set to 50-120 degrees Celsius.

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