Mold injection device with separable heating plate and runner plate structure

Abstract

The utility model relates to the technical field of rubber injection molding, in particular to a mold injection device with a separable heating plate and runner plate structure, which comprises a rack, a runner plate, an injection nozzle, a runner nozzle, a heat insulation plate, a heating plate and a heating plate lifting cylinder, and the runner plate and the heating plate lifting cylinder are fixedly mounted on the rack; a material injection runner is arranged in the runner plate, and the injection nozzle and the runner nozzle are fixedly mounted at the top and the bottom of the runner plate respectively and are communicated with the material injection runner respectively; the heat insulation plate is positioned below the runner plate and is fixedly mounted at the top of the heating plate; the heating plate is connected with a piston rod of the heating plate lifting air cylinder, and the piston rod drives the heat insulation plate and the heating plate to move to the position where the runner nozzle penetrates through the heat insulation plate and the heating plate or the position below the runner nozzle. The heat insulation plate and the heating plate are driven by the heating plate lifting cylinder to be separated from the runner plate and the runner nozzle, so that the problem of rubber vulcanization caused by indirect heating of the runner plate and the runner nozzle by the heating plate is avoided.

Description

Technical Field

[0001] This utility model relates to the field of rubber injection molding technology, and in particular to a mold injection device with a separable heating plate and runner plate structure. Background Technology

[0002] In existing rubber injection molding technology, rubber is injected into a mold using a gun and vulcanized by heating to form rubber products of various shapes. Chinese patent CN219634391U discloses a hot runner shoe sole molding die, including an upper mold, an upper heating plate mounted and attached to the upper mold for heating, a heat insulation plate mounted above the upper heating plate, a cooling plate mounted above the heat insulation plate and having internal cooling channels, a runner plate with an installation port in the middle of the cooling plate for injecting raw material into the mold cavity, and a hot nozzle located on the runner plate. The hot nozzle's outlet is located at the heel end of the shoe sole mold core. When the upper heating plate is heated, it also heats the rubber material in the hot nozzle, bringing it close to the vulcanization temperature. This can clog the injection channels or cause raw material in the runner plate to become waste, leading to frequent mold cleaning and low production efficiency. Furthermore, when the device is in operation for extended periods, the heat insulation effect of the heat insulation plate is poor due to the integrated structure of the cooling plate and heating plate, severely affecting the quality of the finished product. Therefore, this application proposes a mold injection device with a separable heating plate and runner plate structure to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a mold injection device with a separable heating plate and flow channel plate structure.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A mold injection device with a separable heating plate and runner plate structure includes a frame, a runner plate, an injection nozzle, a runner nozzle, a heat insulation plate, a heating plate, and a heating plate lifting cylinder. The runner plate and the heating plate lifting cylinder are fixedly installed on the frame. The runner plate has an injection channel. The injection nozzle and the runner nozzle are fixedly installed at the top and bottom of the runner plate, respectively, and are connected to the injection channel. The heat insulation plate is located below the runner plate and is fixedly installed on top of the heating plate. The heating plate is connected to the piston rod of the heating plate lifting cylinder. The piston rod drives the heat insulation plate and the heating plate to a position where the runner nozzle passes through the heat insulation plate and the heating plate or is located below the runner nozzle.

[0006] Preferably, the heat insulation plate is provided with a first through hole, the heating plate is provided with a second through hole, the flow channel nozzle passes through the first through hole and the second through hole, and there is a gap between the flow channel nozzle and the first through hole and the second through hole.

[0007] Preferably, it also includes an injection pad, which is fixedly installed on the bottom of the heating plate. The injection pad has a third through hole through which the flow channel nozzle passes.

[0008] Preferably, the lower surface of the flow channel nozzle is flush with the lower surface of the injection pad, and the outer surface of the flow channel nozzle is in contact with the inner surface of the third through hole.

[0009] Preferably, the upper end of the third through hole is provided with a guide portion that extends downward toward the center of the third through hole.

[0010] Preferably, the flow channel plate is provided with a number of spaced cooling channels for the flow of cooling liquid.

[0011] Preferably, the flow channel plate includes an upper flow channel plate and a lower flow channel plate. The upper flow channel plate is provided with a first flow channel, and the lower flow channel plate is provided with two through second flow channels. The lower flow channel plate is fixedly installed below the upper flow channel plate, and the first and second flow channels are connected to form an injection flow channel.

[0012] Preferably, the upper flow channel plate is provided with a first mounting groove, and the bottom of the injection nozzle is fixedly installed in the first mounting groove and communicates with the first flow channel.

[0013] Preferably, the lower flow channel plate is provided with a second mounting groove, and the top of the flow channel nozzle is fixedly installed in the second mounting groove and communicates with the second flow channel.

[0014] Preferably, the flow channel nozzle includes an upper flow channel nozzle and a lower flow channel nozzle, with the upper flow channel nozzle being bolted into the second mounting groove; the upper flow channel nozzle and the lower flow channel nozzle are connected by threads.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] (1) The mold injection device with a separable heating plate and flow channel plate structure proposed in this utility model uses the heating plate lifting cylinder to drive the heat insulation plate and heating plate to separate from the flow channel plate and flow channel nozzle, so as to avoid the problem of indirect heating of the flow channel plate and flow channel nozzle due to the poor heat insulation effect of the heat insulation plate during long-term operation, which leads to the vulcanization of the rubber material.

[0017] (2) The mold injection device with a separable heating plate and runner plate structure proposed in this utility model is designed with an injection pad, and the lower surface of the runner nozzle is flush with the lower surface of the injection pad, which increases the contact area between the runner nozzle and the injection pad and the mold. This not only prevents the glue from overflowing when injecting the glue, but also prevents the mold from being damaged due to the protrusion of the lower end of the runner nozzle.

[0018] (3) The upper and lower flow channel nozzles of the mold injection device with a separable heating plate and flow channel plate structure proposed in this utility model are detachably connected by threads, which is convenient for disassembly and assembly and easy for maintenance. Attached Figure Description

[0019] Figure 1 A schematic diagram of a mold injection device having a separable heating plate and flow channel plate structure, provided for an embodiment of this application;

[0020] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;

[0021] Figure 3 A schematic diagram of the separated state of the heating plate and flow channel plate structure of a mold injection device having a separable heating plate and flow channel plate structure, as proposed in an embodiment of this application;

[0022] Figure 4 This is an exploded view of the structure of the flow channel plate, injection nozzle, flow channel nozzle, heat insulation plate, heating plate and injection pad in the embodiments of this application;

[0023] Reference numerals: 1. Frame; 11. Mold closing cylinder; 12. Mold; 13. Guide pillar; 2. Runner plate; 21. Injection runner; 22. Cooling runner; 23. Upper runner plate; 231. First runner; 232. First mounting slot; 24. Lower runner plate; 241. Second runner; 242. Second mounting slot; 3. Injection nozzle; 4. Runner nozzle; 41. Upper runner nozzle; 42. Lower runner nozzle; 5. Heat insulation plate; 51. First through hole; 6. Heating plate; 61. Second through hole; 7. Heating plate lifting cylinder; 71. Piston rod; 8. Injection pad; 81. Third through hole; 811. Guide part. Detailed Implementation

[0024] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. The accompanying drawings are merely illustrative to facilitate understanding of the present invention, and their specific proportions can be adjusted according to design requirements. The vertical relationships of relative elements and the definitions of front / back in the graphics described herein should be understood by those skilled in the art to refer to the relative positions of the components; therefore, they can all be flipped to present the same component, and all of this should fall within the scope disclosed in this specification.

[0025] refer to Figures 1 to 4This application proposes a mold injection device with a separable heating plate and runner plate structure, including a frame 1, a runner plate 2, an injection nozzle 3, a runner nozzle 4, a heat insulation plate 5, a heating plate 6, a heating plate lifting cylinder 7, and an injection pad 8. The runner plate 2 and the heating plate lifting cylinder 7 are fixedly installed on the frame 1. The runner plate 2 has an injection channel 21. The injection nozzle 3 and the runner nozzle 4 are fixedly installed at the top and bottom of the runner plate 2, respectively, and are connected to the injection channel 21. The heat insulation plate 5 is located below the runner plate 2 and is fixedly installed on the top of the heating plate 6. The injection pad 8 is fixedly installed at the bottom of the heating plate 6. The heating plate 6 is connected to the piston rod 71 of the heating plate lifting cylinder 7. The piston rod 71 drives the heat insulation plate 5 and the heating plate 6 to a position where the runner nozzle 4 passes through the heat insulation plate 5 and the heating plate 6 or is located below the runner nozzle 4. When the mold injection device is not in operation, the piston rod 71 of the heating plate lifting cylinder 7 extends, driving the heat insulation plate 5, heating plate 6 and injection pad 8 to move downward and separate from the runner plate 2 and runner nozzle 4, preventing the runner plate 2 and runner nozzle 4 from being too hot and causing the rubber material inside them to vulcanize.

[0026] In a specific embodiment, refer to Figure 2 and Figure 4 The heat insulation plate 5 has a first through hole 51, and the heating plate 6 has a second through hole 61. The nozzle 4 passes through the first through hole 51 and the second through hole 61. A gap is provided between the nozzle 4 and the first and second through holes 51 and 61 to prevent the heat from the heating plate 6 from being directly transferred to the nozzle 4, causing the temperature of the rubber material inside the nozzle 4 to rise and vulcanize. The injection pad 8 has a third through hole 81, through which the nozzle 4 passes. The lower surface of the nozzle 4 is flush with the lower surface of the injection pad 8 to increase the contact area between the nozzle 4, the injection pad 8, and the mold 12. This not only prevents rubber material from overflowing during injection but also prevents damage to the mold 12 due to the protruding lower end of the nozzle 4. Furthermore, the outer surface of the nozzle 4 contacts the inner surface of the third through hole 81 to prevent rubber material from overflowing during injection. The upper end of the third through hole 81 is provided with a guide part 811 that extends downward toward the middle of the third through hole 81. When the piston rod 71 of the heating plate lifting cylinder 7 retracts, the guide part 811 can guide the runner nozzle 4 to be installed in the third through hole 81, ensuring the stable operation of the mold injection device and preventing the runner nozzle 4 from being not installed in the injection pad 8, which would cause the material to overflow.

[0027] In a specific embodiment, refer to Figure 1 , Figure 3 and Figure 4The flow channel plate 2 is provided with several spaced cooling channels 22 for circulating cooling liquid to maintain a constant temperature and prevent the rubber compound from curing. The flow channel plate 2 includes an upper flow channel plate 23 and a lower flow channel plate 24. The upper flow channel plate 23 has a first flow channel 231, and the lower flow channel plate 24 has two through-flow second flow channels 241. The lower flow channel plate 24 is fixedly installed below the upper flow channel plate 23, and the first flow channel 231 and the second flow channel 241 communicate to form an injection channel 21. The upper flow channel plate 23 has a first mounting groove 232, and the bottom of the injection nozzle 3 is fixedly installed in the first mounting groove 232 and communicates with the first flow channel 231. The lower flow channel plate 24 has two second mounting grooves 242. In this embodiment, two flow nozzles 4 are provided, and the tops of the flow nozzles 4 are fixedly installed in the second mounting grooves 242 and communicate with the second flow channels 241. The injection gun injects the rubber material through the injection nozzle 3. The rubber material flows into the runner nozzle 4 through the injection channel 21 and is then injected into the mold 12. The structural design of the injection nozzle 3 being installed in the first mounting groove 232 of the upper runner plate 23 and the runner nozzle 4 being installed in the second mounting groove 242 of the lower runner plate 24 can reduce installation errors and facilitate the alignment of the runner nozzle 4 with the vertically movable heat insulation plate 5 and heating plate 6, ensuring the stable operation of the mold injection device.

[0028] In a specific embodiment, the flow channel nozzle 4 includes an upper flow channel nozzle 441 and a lower flow channel nozzle 442. The upper flow channel nozzle 441 is locked in the second mounting groove 242 by bolts. The upper flow channel nozzle 441 and the lower flow channel nozzle 442 are connected by threads. Since the outer surface of the lower flow channel nozzle 442 is in contact with the inner surface of the third through hole 81 of the injection pad 8, the heating plate 6 indirectly generates heat to the lower flow channel nozzle 442 through the injection pad 8 during long-term operation. The upper flow channel nozzle 441 and the lower flow channel nozzle 442 are detachably connected by threads, which facilitates the maintenance of the lower flow channel nozzle 442.

[0029] The following describes in more detail the mold injection device with a separable heating plate and flow channel plate structure proposed in this application through a specific working process.

[0030] like Figure 1 and 2As shown, the piston rod 71 of the heating plate lifting cylinder 7 retracts, causing the runner nozzle 4 to pass sequentially through the heat insulation plate 5, the heating plate 6, and the injection pad 8, with the lower surface of the runner nozzle 4 flush with the lower surface of the injection pad 8. The mold clamping cylinder 11 is mounted on the frame 1 and connected to the mold 12, driving the mold 12 to move up and down along the guide post 13 of the frame 1. When injection is required, the mold clamping cylinder 11 drives the mold 12 upwards to below the injection pad 8 and into contact with it. The injection gun injects the material into the injection nozzle 3, and the material flows into the runner nozzle 4 through the injection channel 21 of the runner plate 2, and then into the mold 12. Because the runner plate 2 has a cooling channel 22 inside, it maintains a constant temperature. Furthermore, there is a gap between the runner nozzle 4 and the heat insulation plate 5 and heating plate 6, preventing the heating plate 6 from directly transferring heat to the runner nozzle 4. Therefore, the rubber material in the injection runner 21 and the runner nozzle 4 can maintain its temperature during injection, preventing vulcanization. When injection is complete and the mold clamping cylinder 11 drives the mold 12 downwards to the position to pick up the molded profile, the piston rod 71 of the heating plate lifting cylinder 7 extends, causing the heat insulation plate 5, heating plate 6, and injection pad 8 to move downwards along the guide post 13, disengaging the heat insulation plate 5, heating plate 6, and injection pad 8 from the runner plate 2 and the runner nozzle 4. Figure 3 As shown, the heating plate lifting cylinder 7 drives the heat insulation plate 5 and the heating plate 6 to detach from the flow channel plate 2 and the flow channel nozzle 4, which can prevent the heating plate 6 from indirectly transferring heat to the flow channel plate 2 and the flow channel nozzle 4, causing the rubber material in the flow channel plate 2 and the flow channel nozzle 4 to rise in temperature and vulcanize.

[0031] The above embodiments are only used to further illustrate the technical solution of this utility model, but this utility model is not limited to the embodiments. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of the technical solution of this utility model.

Claims

1. A mold injection device having a detachable heating plate and flow channel plate structure, characterized in that: The device includes a frame, a flow channel plate, an injection nozzle, a flow channel nozzle, a heat insulation plate, a heating plate, and a heating plate lifting cylinder. The flow channel plate and the heating plate lifting cylinder are fixedly mounted on the frame. The flow channel plate has an injection channel. The injection nozzle and the flow channel nozzle are fixedly mounted on the top and bottom of the flow channel plate, respectively, and are connected to the injection channel. The heat insulation plate is located below the flow channel plate and is fixedly mounted on top of the heating plate. The heating plate is connected to the piston rod of the heating plate lifting cylinder. The piston rod drives the heat insulation plate and the heating plate to a position where the flow channel nozzle passes through the heat insulation plate and the heating plate or is located below the flow channel nozzle.

2. The mold injection device with a separable heating plate and flow channel plate structure according to claim 1, characterized in that: The heat insulation plate is provided with a first through hole, the heating plate is provided with a second through hole, the flow channel nozzle passes through the first through hole and the second through hole, and there is a gap between the flow channel nozzle and the first through hole and the second through hole.

3. The mold injection device with a separable heating plate and flow channel plate structure according to claim 1, characterized in that: It also includes an injection pad, which is fixedly installed on the bottom of the heating plate. The injection pad has a third through hole through which the flow channel nozzle passes.

4. A mold injection device with a separable heating plate and flow channel plate structure according to claim 3, characterized in that: The lower surface of the flow channel nozzle is flush with the lower surface of the injection pad, and the outer surface of the flow channel nozzle is in contact with the inner surface of the third through hole.

5. A mold injection device with a separable heating plate and flow channel plate structure according to claim 3, characterized in that: The upper end of the third through hole is provided with a guide portion that extends downwards toward the center of the third through hole.

6. A mold injection device having a separable heating plate and flow channel plate structure according to claim 1, characterized in that: The flow channel plate is provided with a number of spaced cooling channels for the flow of cooling liquid.

7. A mold injection device having a separable heating plate and flow channel plate structure according to claim 1, characterized in that: The flow channel plate includes an upper flow channel plate and a lower flow channel plate. The upper flow channel plate is provided with a first flow channel, and the lower flow channel plate is provided with two through second flow channels. The lower flow channel plate is fixedly installed below the upper flow channel plate, and the first and second flow channels are connected to form an injection flow channel.

8. A mold injection device having a separable heating plate and flow channel plate structure according to claim 7, characterized in that: The upper flow channel plate is provided with a first mounting groove, and the bottom of the injection nozzle is fixedly installed in the first mounting groove and communicates with the first flow channel.

9. A mold injection device having a separable heating plate and flow channel plate structure according to claim 7, characterized in that: The lower flow channel plate is provided with a second mounting groove, and the top of the flow channel nozzle is fixedly installed in the second mounting groove and communicates with the second flow channel.

10. A mold injection device having a separable heating plate and flow channel plate structure according to claim 9, characterized in that: The flow channel nozzle includes an upper flow channel nozzle and a lower flow channel nozzle. The upper flow channel nozzle is locked in the second mounting groove by bolts. The upper flow channel nozzle and the lower flow channel nozzle are connected by threads.

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