Sole injection molding device

Abstract

The utility model discloses a shoe sole injection molding device, belongs to the technical field of shoe sole injection molding, and solves the problems that the material of a shoe sole still has certain viscosity before being completely solidified, so that the shoe sole is attached to a mold and is difficult to demold. Comprising a fixed connecting seat, a movable connecting seat capable of performing reciprocating displacement relative to the fixed connecting seat, a movable mold fixedly connected to one side, facing the fixed connecting seat, of the movable connecting seat, a fixed mold fixedly connected to one side, facing the movable connecting seat, of the fixed connecting seat, and a spray gun located above the movable mold and the fixed mold and capable of performing horizontal reciprocating displacement. And the spraying direction of the spraying gun is inclined downwards, and the spraying gun is used for spraying a release agent. According to the utility model, the hydraulic cylinder is used for mold closing injection molding of soles, and the hydraulic cylinder opens and demolds after cooling. The distance sensor outputs a signal after detection, the timing circuit is triggered, the controller drives the air cylinder and the spray gun to spray the release agent, and timing is stopped after timing is finished for next injection molding.

Description

Technical Field

[0001] This utility model relates to the field of shoe sole injection molding technology, and in particular to a shoe sole injection molding device. Background Technology

[0002] Injection molding of shoe soles is a highly efficient shoe manufacturing process that rapidly shapes shoe soles by injecting molten plastic material into a mold. This process is typically completed on automated injection molding machines, ensuring consistency and precision in the sole's shape. Injection-molded soles are widely used in the production of athletic shoes, casual shoes, and other footwear due to their advantages such as wear resistance, good elasticity, and low cost. Furthermore, injection molding technology allows for the incorporation of complex patterns and structures into sole designs, improving slip resistance and cushioning performance while meeting diverse market demands. The high production efficiency and material plasticity of injection molding make it an indispensable manufacturing technology in the modern footwear industry.

[0003] However, after the sole is injected into the mold, even with manual intervention, due to the material of the sole, it will still have a certain degree of stickiness before it is completely solidified, which will cause the sole to adhere to the mold and be difficult to demold.

[0004] Therefore, a shoe sole injection molding device is proposed to solve or alleviate the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a shoe sole injection molding device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A shoe sole injection molding device includes a fixed connecting seat, a movable connecting seat that is reciprocally movable relative to the fixed connecting seat, a movable mold fixedly connected to the movable connecting seat on the side facing the fixed connecting seat, a fixed mold fixedly connected to the fixed connecting seat on the side facing the movable connecting seat, and a spray gun located above the movable mold and the fixed mold and horizontally reciprocally movable, wherein the spraying direction of the spray gun is inclined downward, and the spray gun is used to spray out a release agent.

[0008] Preferably, it further includes a feeding pipe, which is fixedly connected to the side of the fixed connecting seat away from the fixed mold, and the fixed connecting seat has a connecting hole that connects the inside of the fixed mold and the inside of the feeding pipe. A feeding screw is rotatably installed inside the feeding pipe, and a drive motor is fixedly connected to the end of the feeding pipe away from the fixed connecting seat. The output shaft of the drive motor is coaxially connected to the feeding screw. A vertically upward-positioned feed hopper is connected to the feeding pipe.

[0009] Preferably, the system also includes a worktable, on which the fixed connecting seat and the drive motor are both fixedly connected.

[0010] Preferably, a support base is fixedly connected to the workbench, and a horizontally arranged hydraulic cylinder is fixedly connected to the support base. The piston tube of the hydraulic cylinder passes through the support base and is fixedly connected to the moving connection seat.

[0011] Preferably, a connecting platform is fixedly connected to the workbench, a connecting frame is fixedly connected to the connecting platform, a cylinder is fixedly connected to the connecting frame, the piston rod of the cylinder passes through the connecting frame and is fixedly connected to a mounting base, the spray gun is fixedly connected in the mounting base, a storage tank and an air pump are provided on the connecting platform, the air pump is connected to the spray gun through a flexible air tube, the storage tank is connected to the spray gun through a flexible material tube, and a liquid pump provided on the connecting platform is connected to the flexible material tube.

[0012] Preferably, it further includes a fuel injection control circuit, the fuel injection control circuit including...

[0013] A distance sensor is mounted on a support base, and the distance sensor is used to collect the distance between the support base and the moving connection base and to feed back a distance signal;

[0014] A voltage comparison circuit, wherein the input terminal of the voltage comparison circuit is coupled to the output terminal of the distance sensor, and the voltage comparison circuit outputs a comparison signal in response to the distance signal being less than a preset distance reference signal;

[0015] A timing circuit, wherein the input terminal of the timing circuit is coupled to the output terminal of the voltage comparison circuit, and the timing circuit starts timing in response to the comparison signal and outputs a timing signal within the timing period;

[0016] The controller is coupled to the air pump, the liquid pump, and the cylinder respectively. The controller responds to the timing signal and controls the piston rod of the cylinder to extend and controls the air pump and the liquid pump to work within the timing period.

[0017] Preferably, the voltage comparison circuit includes a minimum circuit based on a voltage comparator LM339 and an inverter, wherein the input terminal of the inverter is coupled to the output terminal of the voltage comparator LM339, and the output terminal of the inverter is the output terminal of the voltage comparison circuit; the timing circuit includes a minimum system based on a 555 timer chip; and the controller includes an STM32F103RCT6 embedded microcontroller integrated circuit.

[0018] This utility model has the following beneficial effects:

[0019] This invention uses a hydraulic cylinder to achieve mold closing and injection molding of shoe soles between the moving and fixed molds. After cooling, the hydraulic cylinder opens the mold and assists in manual demolding. A distance sensor detects the distance signal, triggering a timing circuit. The controller drives the cylinder to move the spray gun and spray the release agent, preparing for the next injection. After the timing ends, the controller stops the air pump and hydraulic pump, the cylinder resets, and the cycle repeats. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a structural block diagram of the injection control circuit in this utility model.

[0023] 1. Workbench; 2. Fixed connecting seat; 3. Feed pipe; 4. Drive motor; 5. Connecting platform; 6. Feed hopper; 7. Fixed mold; 8. Support base; 9. Hydraulic cylinder; 10. Moving connecting seat; 11. Moving mold; 12. Connecting frame; 13. Air cylinder; 14. Mounting base; 15. Spray gun; 16. Storage tank; 17. Air pump; 18. Liquid pump; 19. Distance sensor; 20. Voltage comparison circuit; 21. Timing circuit; 22. Controller. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Furthermore, the terms "first," "second," and "third" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0029] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] A shoe sole injection molding device, such as Figure 1 As shown, the system includes a worktable 1, a feeding pipe 3, a fixed connecting seat 2, a movable connecting seat 10 that can move back and forth relative to the fixed connecting seat 2, a movable mold 11 fixedly connected to the movable connecting seat 10 on the side facing the fixed connecting seat 2, a fixed mold 7 fixedly connected to the fixed connecting seat 2 on the side facing the movable connecting seat 10, and a spray gun 15 located above the movable mold 11 and the fixed mold 7 and can move back and forth horizontally. The feeding pipe 3 is fixedly connected to the side of the fixed connecting seat 2 away from the fixed mold 7, and the fixed connecting seat 2 has a connecting hole that connects the interior of the fixed mold 7 and the interior of the feeding pipe 3. A feeding screw is rotatably installed inside the feeding pipe 3. A drive motor 4 is fixedly connected to the end of the feeding pipe 3 away from the fixed connecting seat 2. The output shaft of the drive motor 4 is coaxially connected to the feeding screw. A vertically upward-mounted feed hopper 6 is connected to the feeding pipe 3. The fixed connecting seat 2 and the drive motor 4 are both fixedly connected to the worktable 1.

[0031] Preferably, a support base 8 is fixedly connected to the workbench 1, and a horizontally arranged hydraulic cylinder 9 is fixedly connected to the support base 8. The piston tube of the hydraulic cylinder 9 passes through the support base 8 and is fixedly connected to the moving connection seat 10.

[0032] A connecting platform 5 is fixedly connected to the workbench 1. A connecting frame 12 is fixedly connected to the connecting platform 5. A cylinder 13 is fixedly connected to the connecting frame 12. The piston rod of the cylinder 13 passes through the connecting frame 12 and is fixedly connected to the mounting base 14. The spray gun 15 is fixedly connected in the mounting base 14. A storage tank 16 and an air pump 17 are provided on the connecting platform 5. The air pump 17 is connected to the spray gun 15 through a flexible air tube. The storage tank 16 is connected to the spray gun 15 through a flexible material tube. A liquid pump 18 is connected to the flexible material tube and is provided on the connecting platform 5. The spray direction of the spray gun 15 is tilted downward. The spray gun 15 is used to spray out the release agent.

[0033] like Figure 2 As shown, it also includes a jet control circuit, which includes a distance sensor 19, a voltage comparator circuit 20, a timing circuit 21, and a controller 22. The voltage comparator circuit 20 includes a minimum circuit based on a voltage comparator LM339 and an inverter. The input terminal of the inverter is coupled to the output terminal of the voltage comparator LM339, and the output terminal of the inverter is the output terminal of the voltage comparator circuit 20. The timing circuit 21 includes a minimum system based on a 555 timer chip. The controller 22 includes an STM32F103RCT6 embedded microcontroller integrated circuit.

[0034] Distance sensor 19 is mounted on support base 8 and is used to collect the distance between support base 8 and moving connection base 10 and feed back the distance signal. The input terminal of voltage comparison circuit 20 is coupled to the output terminal of distance sensor 19. Voltage comparison circuit 20 outputs a comparison signal after the distance signal is less than the preset distance reference signal. The input terminal of timing circuit 21 is coupled to the output terminal of voltage comparison circuit 20. Timing circuit 21 starts timing after responding to the comparison signal and outputs a timing signal within the timing period. Controller 22 is coupled to air pump 17, liquid pump 18 and cylinder 13 respectively. Controller 22 responds to the timing signal and controls the piston rod of cylinder 13 to extend and controls air pump 17 and liquid pump 18 to work within the timing period.

[0035] In actual operation, the hydraulic cylinder 9 drives the moving connecting seat 10 and the moving mold 11 to move, so that the moving mold 11 and the fixed mold 7 close. Then the drive motor 4 works, so that the molten material that enters the feeding pipe 3 through the feeding hopper 6 can enter between the fixed mold 7 and the moving mold 11 through the connecting hole, thereby completing the injection molding of the shoe sole.

[0036] After injection molding is completed, cooling occurs between the moving mold 11 and the fixed mold 7, causing the sole to solidify. Then, the hydraulic cylinder 9 opens the fixed mold 7 and the moving mold 11. After opening, the operator assists in demolding the sole. The distance sensor 19 detects the distance between the support base 8 and the moving connection base 10 and outputs a distance signal. This distance signal is sent to the voltage comparison circuit 20. Since the distance signal is less than a preset distance reference signal (i.e., the distance between the support base 8 and the moving connection base 10 is less than a threshold), the voltage comparison circuit 20 responds and outputs a comparison signal to the timing circuit 21. Once the timing circuit 21 starts timing, it outputs a timing signal to the controller. 22. The controller 22 can directly control the cylinder 13, thereby extending the piston rod of the cylinder 13. This causes the cylinder 13 to drive the spray gun 15 to move between the moving mold 11 and the fixed mold 7 via the mounting base 14. Then, the controller 22 controls the air pump 17 and the liquid pump 18 to work simultaneously, so that the mold release agent in the storage tank 16 can be mixed with air and sprayed out in the form of a mist. This allows the mold release agent to adhere to the moving mold 11 and the fixed mold 7, so that the sole can be demolded relatively easily after the next injection molding. After the timing time ends, the timing signal disappears, and the controller 22 will control the air pump 17 and the liquid pump 18 to stop working, so that the cylinder 13 returns to its original state, and then repeat the above actions.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A shoe sole injection molding device, characterized in that, The device includes a fixed connecting seat (2), a movable connecting seat (10) that is reciprocally movable relative to the fixed connecting seat (2), a movable mold (11) fixedly connected to the movable connecting seat (10) on the side facing the fixed connecting seat (2), a fixed mold (7) fixedly connected to the fixed connecting seat (2) on the side facing the movable connecting seat (10), and a spray gun (15) located above the movable mold (11) and the fixed mold (7) and horizontally reciprocally movable. The spray gun (15) is inclined downward in the spraying direction and is used to spray out a release agent.

2. The shoe sole injection molding device according to claim 1, characterized in that, It also includes a feeding pipe (3), which is fixedly connected to the fixed connecting seat (2) on the side away from the fixed mold (7). The fixed connecting seat (2) has a connecting hole that connects the inside of the fixed mold (7) and the inside of the feeding pipe (3). A feeding screw is rotatably installed inside the feeding pipe (3). A drive motor (4) is fixedly connected to the end of the feeding pipe (3) away from the fixed connecting seat (2). The output shaft of the drive motor (4) is coaxially connected to the feeding screw. A vertically upward feeding hopper (6) is connected to the feeding pipe (3).

3. The shoe sole injection molding device according to claim 2, characterized in that, It also includes a worktable (1), and the fixed connecting seat (2) and the drive motor (4) are both fixedly connected to the worktable (1).

4. The shoe sole injection molding device according to claim 3, characterized in that, A support base (8) is fixedly connected to the workbench (1), and a horizontally arranged hydraulic cylinder (9) is fixedly connected to the support base (8). The piston tube of the hydraulic cylinder (9) passes through the support base (8) and is fixedly connected to the moving connection seat (10).

5. The shoe sole injection molding device according to claim 4, characterized in that, A connecting platform (5) is fixedly connected to the workbench (1), a connecting frame (12) is fixedly connected to the connecting platform (5), a cylinder (13) is fixedly connected to the connecting frame (12), the piston rod of the cylinder (13) passes through the connecting frame (12) and is fixedly connected to a mounting base (14), the spray gun (15) is fixedly connected in the mounting base (14), a storage tank (16) and an air pump (17) are provided on the connecting platform (5), the air pump (17) and the spray gun (15) are connected through a flexible air tube, the storage tank (16) and the spray gun (15) are connected through a flexible material tube, and a liquid pump (18) provided on the connecting platform (5) is connected to the flexible material tube.

6. The shoe sole injection molding device according to claim 5, characterized in that, It also includes a fuel injection control circuit, the fuel injection control circuit including Distance sensor (19) is mounted on support base (8) and is used to collect the distance between support base (8) and moving connection base (10) and to feed back the distance signal; A voltage comparison circuit (20) is provided, the input terminal of which is coupled to the output terminal of a distance sensor (19). The voltage comparison circuit (20) outputs a comparison signal in response to a distance signal being less than a preset distance reference signal. The timing circuit (21) has its input terminal coupled to the output terminal of the voltage comparison circuit (20). The timing circuit (21) starts timing in response to the comparison signal and outputs a timing signal within the timing time. The controller (22) is coupled to the air pump (17), the liquid pump (18) and the cylinder (13) respectively. The controller (22) responds to the timing signal and controls the extension of the piston rod of the cylinder (13) and controls the operation of the air pump (17) and the liquid pump (18) within the timing period.

7. A shoe sole injection molding device according to claim 6, characterized in that, The voltage comparison circuit (20) includes a minimum circuit based on the voltage comparator LM339 and an inverter. The input of the inverter is coupled to the output of the voltage comparator LM339, and the output of the inverter is the output of the voltage comparison circuit (20). The timing circuit (21) includes a minimum system based on the 555 timer chip. The controller (22) includes an STM32F103RCT6 embedded microcontroller integrated circuit.

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