Slipper injection mold with air pressure ejection auxiliary demolding

Abstract

The utility model discloses a kind of slippers injection mould of air pressure ejection auxiliary demoulding, it is related to slippers injection mould technical field, including support and disc, the inside of support is equipped with lower mould, the top of support is connected with upper mould by hydraulic rod, the inside of lower mould is equipped with two groups of air cylinder, the top of air cylinder is connected with top plate a, the outside of top plate a is slidably connected with lower mould, the inside of top plate a is provided with secondary demoulding mechanism, and the secondary demoulding mechanism includes the top plate b of top plate a inside sliding connection.This slippers injection mould of air pressure ejection auxiliary demoulding, by starting air cylinder and driving top plate a to move up, can be ejected demoulding to slippers in lower mould, and top plate a will drive transmission mechanism synchronous movement, so that secondary demoulding mechanism moves, to separate top plate a and slippers, complete complete demoulding, the heat dissipation mechanism arranged in lower mould can be rapidly cooled to internal slippers.

Description

Technical Field

[0001] This utility model relates to the field of slipper injection mold technology, specifically a slipper injection mold with air pressure ejection assisted demolding. Background Technology

[0002] As an essential item in daily life, the injection mold plays a crucial role in the manufacturing process of slippers. A slipper injection mold is a specialized tool that uses molten plastic to inject into a specific cavity, which then cools and solidifies to form various styles of slippers.

[0003] For example, the utility model disclosed in CN221641634U discloses a multi-directional uniform injection mold for slippers. Through the setting of the toothed plate and the first gear, the striking rod is driven to reciprocate and rotate, thereby impacting the positioning groove and generating vibration. The vibration is transmitted to the mold cavity, thereby increasing the resistance between the slipper and the mold cavity during demolding. While ensuring the integrity of the slipper, it improves the demolding efficiency, which is more efficient than the direct pushing demolding method.

[0004] In the above-mentioned slipper injection mold, the internal ejector plate is moved upward by the drive mechanism to push the slipper out of the injection mold. However, since the top of the ejector plate comes into contact with the liquid material during injection, the slipper will stick to the ejector plate after molding, and the demolding is not complete. This makes it cumbersome for workers to remove the slipper from the ejector plate. Utility Model Content

[0005] The purpose of this utility model is to provide a pneumatic ejection assisted demolding slipper injection mold to solve the problem mentioned in the background art that, during the injection process of existing slipper injection molds, the top of the ejector plate comes into contact with the liquid material, so the slipper sticks to the ejector plate after molding, and the demolding is not thorough, which makes it cumbersome for workers to remove the slipper from the ejector plate by force.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pneumatic ejection-assisted demolding slipper injection mold, comprising a support and a disc, wherein a lower mold is installed inside the support, and an upper mold is connected to the top of the support via a hydraulic rod; two sets of cylinders are installed inside the lower mold, and a top plate a is connected to the top of the cylinders, the outer side of the top plate a is slidably connected to the lower mold, a secondary demolding mechanism is provided inside the top plate a, the secondary demolding mechanism includes a top plate b slidably connected inside the top plate a, and a transmission mechanism for driving the top plate b to move is provided at the bottom of the top plate a; a heat dissipation mechanism is provided inside the lower mold.

[0007] Furthermore, the transmission mechanism includes a connecting frame fixedly connected to both sides of the bottom of the top plate a, a rack rod fixedly connected to one end of the connecting frame, and a gear meshing with one side of the rack rod.

[0008] Furthermore, a fixed frame is rotatably connected to one side of the gear via a rotating shaft, and the bottom of the fixed frame is fixed to the lower mold. The rack and pinion and the gear form a meshing transmission structure.

[0009] Furthermore, a top rod is fixedly connected to the bottom of the top plate b, and a crossbar is fixedly connected to the bottom of the top rod. A through groove is opened inside the crossbar, and a lever is slidably connected to the inner side of the through groove. A disc is fixedly connected to one end of the lever, and one side of the disc is fixed to a gear. A limit frame is slidably connected to the outer side of the top rod, and both ends of the limit frame are fixed to the inner side of the lower mold. The limit frame and the top rod form a sliding structure.

[0010] Furthermore, the heat dissipation mechanism includes a water tank installed on one side of the lower mold, multiple sets of fans installed on the top of the water tank, a pressure pump connected to one end of the water tank via a pipe, and a water inlet pipe connected to the output end of the pressure pump.

[0011] Furthermore, one end of the water inlet pipe is connected to a cooling water tank, which is located inside the lower mold, and the other end of the water tank is connected to a water outlet pipe, one end of which is connected to the cooling water tank.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the pneumatic ejection assisted demolding slipper injection mold can eject the slipper in the lower mold by starting the cylinder to drive the top plate a to move upward, and the top plate a will drive the transmission mechanism to move synchronously, so that the secondary demolding mechanism moves, thereby separating the top plate a from the slipper and completing the demolding. The heat dissipation mechanism set in the lower mold can quickly cool the slipper inside.

[0013] 1. By starting the cylinder, the top plate a is moved upward to demold. The top plate a will drive the two sets of racks and pinions to mesh with the gears, causing the disc to rotate. The lever will then move the crossbar back and forth. The crossbar will drive the top rod and the top plate b to move up and down once. During the movement, the top plate b will separate from the slipper. When the top plate a moves downward, the top plate b will move up and down once more. At this time, the top plate b will cause the top plate a to separate from the slipper, completing the demolding.

[0014] 2. Start the pressure pump to draw water from the water tank into the cooling water tank of the lower mold, thereby absorbing the heat of the slippers in the molding tank and accelerating the cooling of the slippers. The water outlet pipe can discharge the liquid into the water tank, and start the fan to cool the liquid in the water tank, thereby achieving circulating cooling. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the three-dimensional cross-sectional structure of the lower mold of this utility model; Figure 4 This is a three-dimensional structural diagram of the top plate a of this utility model; Figure 5 This utility model Figure 2 A magnified structural diagram at point A; Figure 6 This is a three-dimensional structural diagram of the top plate b of this utility model.

[0016] In the diagram: 1. Support; 2. Lower mold; 3. Upper mold; 4. Cylinder; 5. Top plate a; 6. Top plate b; 7. Disc; 8. Lever; 9. Crossbar; 10. Push rod; 11. Connecting frame; 12. Rack; 13. Gear; 14. Fixing frame; 15. Limiting frame; 16. Water tank; 17. Fan; 18. Booster pump; 19. Inlet pipe; 20. Cooling water tank; 21. Outlet pipe. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1: Please refer to Figures 1-3 This utility model provides the following technical solution: a pneumatic ejection assisted demolding slipper injection mold, including a support 1 and a disc 7. A lower mold 2 is installed inside the support 1, and an upper mold 3 is connected to the top of the support 1 via a hydraulic rod. Two sets of cylinders 4 are installed inside the lower mold 2. A top plate a5 is connected to the top of the cylinders 4. The outer side of the top plate a5 is slidably connected to the lower mold 2. A secondary demolding mechanism is provided inside the top plate a5. The secondary demolding mechanism includes a top plate b6 slidably connected inside the top plate a5. A transmission mechanism for driving the top plate b6 to move is provided at the bottom of the top plate a5. When the slipper is being molded, the pneumatic ejection assisted demolding slipper injection mold moves the upper mold 3 down to merge with the lower mold 2 by activating the hydraulic rod. Then, liquid material is injected into the lower mold 2 through the injection port on one side of the lower mold 2. After the material cools, it will be formed in the mold.

[0019] Please see Figure 2 and Figures 4-6The transmission mechanism includes a connecting frame 11 fixedly connected to both sides of the bottom of the top plate a5. A rack rod 12 is fixedly connected to one end of the connecting frame 11, and a gear 13 is meshed with one side of the rack rod 12. A fixed frame 14 is rotatably connected to one side of the gear 13 via a rotating shaft. The bottom of the fixed frame 14 is fixed to the lower mold 2. The rack rod 12 and the gear 13 form a meshing transmission structure. When it is necessary to demold the slippers, the top plate a5 is moved upward by starting the cylinder 4, thereby pushing the slippers out of the lower mold 2. When the top plate a5 moves, it also drives the two sets of rack rods 12 to move, thereby meshing with the gear 13, so that the gear 13 drives the disc 7 on one side to rotate.

[0020] Please see Figures 2-5 A push rod 10 is fixedly connected to the bottom of the top plate b6, and a crossbar 9 is fixedly connected to the bottom of the push rod 10. A through groove is opened inside the crossbar 9, and a lever 8 is slidably connected to the inner side of the through groove. A disc 7 is fixedly connected to one end of the lever 8, and one side of the disc 7 is fixed to the gear 13. A limit frame 15 is slidably connected to the outer side of the push rod 10. Both ends of the limit frame 15 are fixed to the inner side of the lower mold 2. The limit frame 15 and the push rod 10 form a sliding structure. When the disc 7 rotates, it slides in the crossbar 9 through the lever 8 on one side, thereby moving the crossbar 9 back and forth. The crossbar 9 will drive the push rod 10 to move together. One rotation of the disc 7 will drive the push rod 10 and the top plate b6 to move once. The disc 7 moves up and down repeatedly. During the first half of its rotation, the disc 7 moves the top plate b6 upward, while during the second half of its rotation, the disc 7 moves the top plate b6 downward. However, the top plate a5 remains in an upward position, allowing the top plate b6 to separate from the slipper. When the top plate a5 moves downward, the rack 12 still meshes with the gear 13, so the top plate b6 will move up and down again. When the downward-moving top plate a5 brings the slipper into contact with the upward-moving top plate b6, the top plate b6 will push the slipper upward, causing it to separate from the top plate a5, thus completing the complete demolding of the slipper. After the top plate a5 has completely moved downward, the top plate b6 will also return to its original position, so that its top is on the same plane as the top plate a5.

[0021] The above operations facilitate the complete demolding of slippers from the slipper injection mold.

[0022] Example 2: Please see Figure 2 and Figure 3Based on Embodiment 1, a heat dissipation mechanism for cooling the slippers in the lower mold 2 is also disclosed. Its specific structure is as follows: A heat dissipation mechanism is provided inside the lower mold 2. The heat dissipation mechanism includes a water tank 16 installed on one side of the lower mold 2. Multiple fans 17 are installed on the top of the water tank 16. One end of the water tank 16 is connected to a pressure pump 18 through a pipe. The output end of the pressure pump 18 is connected to a water inlet pipe 19. One end of the water inlet pipe 19 is connected to a cooling water tank 20. The cooling water tank 20 is opened inside the lower mold 2. The other end of the water tank 16 is connected to a water outlet pipe 21. One end of the water outlet pipe 21 is connected to the cooling water tank 20.

[0023] Please see Figure 2 and Figure 3 The air pressure ejects the slipper injection mold for demolding. In order to speed up the molding of the slippers, it is necessary to cool them. By starting the pressure pump 18, water is drawn out of the water tank 16 and sent into the cooling water tank 20 of the lower mold 2 through the water inlet pipe 19. The cooling water tank 20 surrounds the molding groove in the lower mold 2 and can absorb the heat of the slippers in the molding groove, thus accelerating the cooling of the slippers. The liquid that has absorbed the heat will be discharged into the water tank 16 through the water outlet pipe 21, and the fan 17 will be started to cool the liquid in the water tank 16, thereby continuously cooling the slippers. In this way, the slippers in the slipper injection mold can be cooled quickly.

[0024] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pneumatic ejection assisted demolding slipper injection mold, comprising a bracket (1) and a disc (7), wherein a lower mold (2) is installed inside the bracket (1), and an upper mold (3) is connected to the top of the bracket (1) via a hydraulic rod. Its features are: The lower mold (2) is equipped with two sets of cylinders (4). The top of the cylinders (4) is connected to a top plate a (5). The outer side of the top plate a (5) is slidably connected to the lower mold (2). The top plate a (5) is provided with a secondary demolding mechanism. The secondary demolding mechanism includes a top plate b (6) slidably connected inside the top plate a (5). The bottom of the top plate a (5) is provided with a transmission mechanism to drive the top plate b (6) to move. The lower mold (2) is equipped with a heat dissipation mechanism inside.

2. The slipper injection mold with pneumatic ejection assisted demolding according to claim 1, characterized in that: The transmission mechanism includes a connecting frame (11) fixedly connected to both sides of the bottom of the top plate a (5), a rack rod (12) fixedly connected to one end of the connecting frame (11), and a gear (13) meshing with one side of the rack rod (12).

3. The slipper injection mold with pneumatic ejection assisted demolding according to claim 2, characterized in that: One side of the gear (13) is rotatably connected to a fixed frame (14) via a rotating shaft. The bottom of the fixed frame (14) is fixed to the lower mold (2). The rack rod (12) and the gear (13) form a meshing transmission structure.

4. The slipper injection mold with pneumatic ejection assisted demolding according to claim 1, characterized in that: The bottom of the top plate b (6) is fixedly connected to a top rod (10), and the bottom of the top rod (10) is fixedly connected to a cross rod (9). The cross rod (9) has a through groove inside, and a lever (8) is slidably connected to the inside of the through groove. One end of the lever (8) is fixedly connected to a disc (7). One side of the disc (7) is fixed to a gear (13). The outside of the top rod (10) is slidably connected to a limit frame (15). Both ends of the limit frame (15) are fixed to the inside of the lower mold (2). The limit frame (15) and the top rod (10) form a sliding structure.

5. The slipper injection mold with pneumatic ejection assisted demolding according to claim 1, characterized in that: The heat dissipation mechanism includes a water tank (16) installed on one side of the lower mold (2), and multiple sets of fans (17) are installed on the top of the water tank (16). One end of the water tank (16) is connected to a pressure pump (18) through a pipe, and the output end of the pressure pump (18) is connected to a water inlet pipe (19).

6. The slipper injection mold with pneumatic ejection assisted demolding according to claim 5, characterized in that: One end of the water inlet pipe (19) is connected to a cooling water tank (20), which is located inside the lower mold (2). The other end of the water tank (16) is connected to a water outlet pipe (21), one end of which is connected to the cooling water tank (20).

Images