Injection molding and compacting device for shoe production

Abstract

The utility model discloses a kind of injection moulding compaction devices for shoe production, including pedestal, pedestal side is equipped with upper mould, upper mould upper side is equipped with exhaust pipe, exhaust pipe side is equipped with adjusting sleeve and pressure relief pipe, exhaust pipe outside is rotatably equipped with movable plate, movable plate is equipped with movable slot, exhaust pipe outside is slidably equipped with clamping sleeve, clamping sleeve side is equipped with connecting plate, connecting plate side is equipped with limit plate, adjusting sleeve side is movably equipped with multiple clamping blocks, pressure relief pipe inside is equipped with fixed rod, exhaust pipe inside is equipped with fixing frame, fixed rod one end is equipped with wide distance block, clamping block side is equipped with clamping spring, adjusting sleeve inside is equipped with cooperation sleeve, pressure relief pipe inside is equipped with moving sleeve, moving sleeve outer wall is movably connected with cooperation sleeve inner wall by thread, fixed rod outside is equipped with moving spring, fixing frame side is equipped with sealing plate, exhaust pipe outside is equipped with multiple lock blocks, the utility model realizes the flexible adjustment to pressure relief threshold value and guarantees the structure stability after threshold value adjustment.

Description

Technical Field

[0001] This utility model relates to the field of injection molding and compaction technology in shoe production, and more specifically, it relates to an injection molding and compaction device for shoe production. Background Technology

[0002] In the existing technological field, injection molding compaction devices for shoe production, as core equipment in the modern shoe manufacturing industry, play a crucial role in the molding process of plastic, rubber, and various composite material soles. In the injection molding compaction process, most existing injection molding compaction devices have a one-way sealing device installed at the top of the upper mold. The main function of this device is to control pressure relief during the mold closing and injection process, allowing air inside the mold to automatically release pressure when it reaches a preset pressure threshold, thus avoiding quality problems such as insufficient injection, surface defects, and substandard dimensional accuracy caused by excessive internal air pressure. However, this traditional one-way sealing device design has significant technical limitations. Its pressure relief threshold is usually set to a fixed standard value. This rigid design concept completely ignores the different injection molding requirements of various shoe sole products. The varying requirements of process parameters mean that different shoe sole materials have different flow properties and curing characteristics during actual production. Shoe sole products with different thicknesses and structural complexities require corresponding injection pressures and pressure relief parameters. However, the fixed pressure relief threshold design of existing equipment prevents manufacturers from flexibly adjusting the pressure relief parameters according to specific product characteristics and process requirements. When the pressure relief threshold is set too high, it leads to excessive air pressure inside the mold, causing quality defects such as uneven material filling, surface bubbles, and loose internal structure. When the pressure relief threshold is set too low, problems such as premature pressure relief, insufficient material flow, insufficient product density, and decreased strength performance occur. This technical limitation not only directly affects the quality stability and performance of shoe sole products but also wastes raw materials, increases production costs, and reduces production efficiency.

[0003] Secondly, regarding the aforementioned issue of fixed pressure relief thresholds, some equipment manufacturers have indeed implemented adaptive adjustment functions by adding specialized adjustment components. While these improvements have addressed the problem of unadjustable pressure relief parameters to some extent, they have revealed new technical defects and reliability risks in practical applications. The structural design of these adjustment devices is relatively simple and crude, lacking necessary stability assurance measures and anti-interference capabilities. During long-term operation, these simple adjustment mechanisms are highly susceptible to various adverse factors during equipment operation, especially the strong impact vibrations generated during the mold closing operation of the injection molding compaction device. These factors can seriously threaten the stability of the adjustment mechanism. More importantly, these simple adjustment devices are also highly susceptible to interference from external environmental factors. For example, vibration transmission within the production workshop and accidental collisions by operators can cause slight but critical shifts in the position of internal components of the adjustment mechanism, resulting in uncontrollable drift changes in the carefully adjusted pressure relief threshold parameters. When the adjusted threshold changes unexpectedly, it not only leads to differences in the injection molding quality of subsequent batches of products, affecting product consistency and pass rate, but may also cause the entire batch of products to fail to meet quality standards, resulting in serious economic losses such as rework or direct scrapping. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides an injection molding compaction device for shoe production to solve the technical problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an injection molding compaction device for shoe production, comprising a base, an upper mold movably disposed on one side of the base, an exhaust pipe connected above the upper mold, an adjusting sleeve and a pressure relief pipe disposed on one side of the exhaust pipe, the adjusting sleeve being rotatably connected to the exhaust pipe and the pressure relief pipe on both sides respectively, a movable plate rotatably mounted on the outer side of the exhaust pipe, a movable groove being formed on the movable plate, a locking sleeve slidably mounted on the outer side of the exhaust pipe, a connecting plate being fixedly connected to one side of the locking sleeve, a limiting plate being connected to one side of the connecting plate, a plurality of locking blocks movably disposed on one side of the adjusting sleeve, and a fixing block being fixedly disposed on the inner side of the pressure relief pipe. The exhaust pipe has a fixed bracket on its inner side. A wide-space block is fixedly connected to one end of the fixed rod. The wide-space block is fixedly installed inside the fixed bracket. A locking spring is provided on one side of the locking block. The two ends of the locking spring are respectively connected to two adjacent locking blocks. A mating sleeve is fixedly connected to the inner side of the adjusting sleeve. A movable sleeve is provided inside the pressure relief pipe. The outer wall of the movable sleeve is movably connected to the inner wall of the mating sleeve through threads. The movable sleeve is slidably installed on the outside of the fixed rod. A movable spring is sleeved on the outside of the fixed rod. A sealing plate is movably provided on one side of the fixed bracket. The two ends of the movable spring are respectively connected to the sealing plate and the movable sleeve. Multiple locking blocks are fixed on the outside of the exhaust pipe.

[0008] The present invention is further configured such that a lower mold is detachably provided on one side of the base, a fixed seat is detachably installed on one side of the base, and multiple driving components are detachably installed below the fixed seat. The output ends of the driving components are detachably connected to the upper mold. The distributed driving design of the multiple driving components ensures uniform force during the mold closing process, effectively prevents mold deformation and misalignment, and improves the accuracy and stability of injection molding.

[0009] The present invention is further configured such that a mounting bracket is movably provided on one side of the base, an injection head is detachably mounted on the mounting bracket, an injection hole is provided on the upper mold, and a guide hole is provided on the fixed base. Through the precise positioning design of the movable mounting bracket, the injection hole and the guide hole, it is ensured that the injection head can accurately enter the mold to inject material, thus avoiding the problem of uneven injection caused by positioning deviation.

[0010] The present invention is further configured such that a guide groove is provided on one side of the base, and a guide block is fixedly provided on one side of the mounting frame. The guide block slides in the guide groove, and a reliable guiding mechanism is formed by the precise cooperation between the guide groove and the guide block, which ensures that the mounting frame runs smoothly along the predetermined trajectory during the lifting process, prevents lateral deviation and shaking, and improves the accuracy and repeatability of the injection head positioning.

[0011] The present invention is further configured such that a thrust bearing is detachably provided on one side of the movable plate, and a movable spring is movably sleeved on the outside of the exhaust pipe. The two ends of the movable spring are respectively connected to the thrust bearing and the locking sleeve. The thrust bearing reduces the frictional resistance when the movable plate rotates, and the movable spring provides a reliable reset force to ensure that the locking mechanism can automatically reset to the initial state after the operation is completed.

[0012] The present invention is further configured such that a sliding groove is provided on the outer side of the movable sleeve, and a slide rail is fixedly provided on the inner side of the exhaust pipe. The sliding groove and the slide rail are adapted to each other, and a guide limiting mechanism is formed by the precise cooperation between the sliding groove and the slide rail, ensuring that the movable sleeve can only move axially and cannot rotate under the thread drive, thus ensuring the accuracy and linearity of the pressure relief threshold adjustment and avoiding positional deviation during the adjustment process.

[0013] The present invention is further configured such that a locking wheel is rotatably mounted on one side of the locking block, the locking wheel engages between two adjacent locking blocks, a locking groove is formed in the locking block, and multiple locking rails are connected to one side of the adjusting sleeve, the locking groove and the locking rails are adapted to each other. Through the engagement of the locking wheel and the locking block and the guiding cooperation of the locking groove and the locking rails, a double mechanical locking mechanism is formed, which not only ensures the reliable locking of the adjusting sleeve in the set position, but also ensures the smoothness of the locking and unlocking operation, and effectively prevents the influence of vibration and impact on the adjusting position.

[0014] The present invention is further configured such that a sealing ring is provided on one side of the sealing plate and a sealing groove is provided on one side of the fixing frame. The sealing ring is inserted into the sealing groove accordingly. The precise cooperation between the sealing ring and the sealing groove forms a reliable sealing structure, ensuring that the pressure relief system has good sealing performance under normal working conditions and preventing gas leakage from affecting the injection molding quality.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides an injection molding compaction device for shoe production, which has the following beneficial effects:

[0017] 1. By installing a fixed bracket inside the exhaust pipe, a fixed rod is fixedly connected to a wide-space block and installed inside the fixed bracket. A movable sleeve is movably connected to the inner wall of the mating sleeve via a thread and slidably installed on the outside of the fixed rod. A movable spring is installed on the outside of the fixed rod, connecting the sealing plate and the movable sleeve. When the adjusting sleeve drives the mating sleeve to rotate forward or backward, it causes the movable sleeve to slide along the slide rail and slide groove to adjust the distance between it and the sealing plate, thereby changing the compression degree of the movable spring and the magnitude of the thrust applied to the sealing plate. This completely solves the major technical defect of the fixed and unadjustable pressure relief threshold in the existing technology. This adjustable pressure relief system completely changes the technical limitation of the fixed pressure relief parameters of traditional equipment, enabling manufacturers to adjust the pressure relief parameters according to different materials such as EVA, TPU, rubber, and PVC. The pressure relief threshold is precisely adjusted by considering the differences in the flow properties of the sole materials and the specific process requirements of sole products with different thicknesses and structural complexities. This effectively avoids quality defects such as uneven material filling, surface bubbles, and loose internal structure caused by excessively high pressure relief thresholds. At the same time, it prevents problems such as premature pressure relief, insufficient material flow, and insufficient product density caused by excessively low pressure relief thresholds. This significantly improves the quality stability and performance of sole products, greatly reduces raw material waste, lowers production costs, and increases production efficiency. It enables companies to flexibly respond to the market's diverse and personalized demands for sole products, achieve true flexible production, and greatly enhance the company's technological innovation capabilities and market competitiveness.

[0018] 2. A precision locking mechanism composed of multiple components, including a locking sleeve, connecting plate, limiting plate, movable plate, movable groove, thrust bearing, movable spring, locking block, locking wheel, locking block, locking rail, locking groove, and locking spring, completely solves the technical defects of existing simple adjustment devices, such as simple structure, insufficient stability, and susceptibility to adjustment parameter inaccuracies due to external forces such as mold closing impact. This multi-locking mechanism design completely overcomes the problem of simple adjustment devices being easily affected by the impact and vibration generated by the mold closing operation of the injection molding compaction device during long-term operation. Even when the equipment frequently performs mold closing and opening operations, internal pressure fluctuates drastically, or the production environment is vibrating, the precision locking system can still maintain stability. The stability of the adjustment mechanism's set position prevents parameter drift or structural loosening. Simultaneously, the multiple limiting structure effectively resists interference from external environmental factors, including vibration transmission within the production workshop and accidental collisions by operators. These factors prevent displacement of the internal components of the adjustment mechanism, ensuring the carefully adjusted pressure relief threshold parameter remains stable and reliable over the long term. This fundamentally guarantees the structural stability after pressure relief threshold adjustment, effectively preventing product quality differences and batch scrapping losses caused by unexpected changes in pressure relief parameters during mass production. It significantly improves equipment reliability and production quality consistency, providing a solid technical guarantee for stable production and quality control for enterprises. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an injection molding compaction device for shoe production according to this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the fixed base and the upper mold part in this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the pressure relief pipe, exhaust pipe, movable plate, locking sleeve, and adjusting sleeve in this utility model;

[0022] Figure 4 This is a cross-sectional structural diagram of the pressure relief pipe, exhaust pipe, movable plate, movable sleeve, sealing plate, locking sleeve and adjusting sleeve in this utility model;

[0023] Figure 5 This is a cross-sectional structural diagram of the pressure relief pipe, exhaust pipe, movable plate, locking sleeve, and adjusting sleeve in this utility model.

[0024] In the diagram: 1. Base; 2. Upper mold; 3. Exhaust pipe; 4. Adjusting sleeve; 5. Pressure relief pipe; 6. Movable plate; 7. Movable groove; 8. Locking sleeve; 9. Connecting plate; 10. Limiting plate; 11. Locking block; 12. Fixing rod; 13. Fixing frame; 14. Wide-space block; 15. Locking spring; 16. Mating sleeve; 17. Moving sleeve; 18. Moving spring; 19. Locking block; 20. Lower mold; 21. Fixed seat; 22. Driving component; 23. Mounting frame; 24. Injection head; 25. Injection hole; 26. Guide hole; 27. Guide groove; 28. Guide block; 29. ​​Thrust bearing; 30. Movable spring; 31. Slide groove; 32. Slide rail; 33. Locking wheel; 34. Locking groove; 35. Locking rail; 36. Sealing ring; 37. Sealing groove; 50. Sealing plate. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0027] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0028] Please see Figures 1-5 A shoe manufacturing injection molding compaction device includes a base 1, an upper mold 2 movably mounted on one side of the base 1, an exhaust pipe 3 connected above the upper mold 2, an adjusting sleeve 4 and a pressure relief pipe 5 on one side of the exhaust pipe 3, the adjusting sleeve 4 being rotatably connected to the exhaust pipe 3 and the pressure relief pipe 5 on both sides respectively, a movable plate 6 rotatably mounted on the outside of the exhaust pipe 3, the movable plate 6 having a movable groove 7, a locking sleeve 8 slidably mounted on the outside of the exhaust pipe 3, a connecting plate 9 fixedly connected to one side of the locking sleeve 8, a limiting plate 10 connected to one side of the connecting plate 9, multiple locking blocks 11 movably mounted on one side of the adjusting sleeve 4, a fixing rod 12 fixedly mounted inside the pressure relief pipe 5, and a fixing frame 13 fixedly mounted inside the exhaust pipe 3. A wide-spaced block 14 is fixedly connected to one end of the fixed rod 12. The wide-spaced block 14 is fixedly installed inside the fixed frame 13. A locking spring 15 is provided on one side of the locking block 11. The two ends of the locking spring 15 are respectively connected to two adjacent locking blocks 11. A mating sleeve 16 is fixedly connected to the inside of the adjusting sleeve 4. A movable sleeve 17 is provided inside the pressure relief pipe 5. The outer wall of the movable sleeve 17 is movably connected to the inner wall of the mating sleeve 16 through threads. The movable sleeve 17 is slidably installed on the outside of the fixed rod 12. A movable spring 18 is sleeved on the outside of the fixed rod 12. A sealing plate 50 is movably provided on one side of the fixed frame 13. The two ends of the movable spring 18 are respectively connected to the sealing plate 50 and the movable sleeve 17. Multiple locking blocks 19 are fixedly provided on the outside of the exhaust pipe 3.

[0029] A lower mold 20 is detachably provided on one side of the base 1, and a fixed seat 21 is detachably installed on one side of the base 1. Multiple driving components 22 are detachably installed below the fixed seat 21, and the output ends of the driving components 22 are detachably connected to the upper mold 2.

[0030] A mounting bracket 23 is movably provided on one side of the base 1. An injection head 24 is detachably mounted on the mounting bracket 23. A corresponding injection hole 25 is provided on the upper mold 2, and a corresponding guide hole 26 is provided on the fixed base 21.

[0031] A guide groove 27 is provided on one side of the base 1, and a guide block 28 is fixedly provided on one side of the mounting bracket 23. The guide block 28 slides in the guide groove 27.

[0032] In this embodiment, when the device is needed, the upper mold 2 and lower mold 20 are first driven to close by the drive component 22 located below the fixed base 21. Then, the external hydraulic drive device pushes the mounting bracket 23 to lower the injection head 24, allowing the injection head 24 to pass through the guide hole 26 and enter the injection hole 25. Then, injection molding is performed in the space between the upper mold 2 and lower mold 20. During the injection process, when the internal pressure value is greater than the pressure relief threshold, the airflow pushes the sealing plate 50, causing the sealing plate 50 to slide along the slide rail 32 and the slide groove 31, and causing the sealing ring 36 on one side of the sealing plate 50 to disengage from the sealing groove 37, thus sealing the space. The sealing plate 50 slides from the position of the wide-spaced block 14 to the position of the fixed rod 12. Then the distance between the sealing plate 50 and the movable sleeve 17 shortens, squeezing the movable spring 18. Then the airflow flows through the gap between the fixed rod 12 and the sealing plate 50 to the other side of the sealing plate 50, and then is discharged through the pressure relief pipe 5. After the pressure is released, the movable spring 18 pushes the sealing plate 50 to slide back along the slide groove 31 and slide back to its original position, so that the sealing plate 50 abuts against the side of the fixed frame 13 again. At the same time, the sealing plate 50 moves to the position corresponding to the wide-spaced block 14 while driving the sealing ring 36 on one side to re-embed into the sealing groove 37, so that the exhaust pipe 3 is sealed again.

[0033] Please see Figures 3-5 As a further implementation of the overall equipment: a thrust bearing 29 is detachably provided on one side of the movable plate 6, and a movable spring 30 is movably sleeved on the outside of the exhaust pipe 3. The two ends of the movable spring 30 are respectively connected to the thrust bearing 29 and the retaining sleeve 8.

[0034] The movable sleeve 17 has a sliding groove 31 on its outer side, and the exhaust pipe 3 has a slide rail 32 fixed on its inner side. The sliding groove 31 and the slide rail 32 are compatible.

[0035] A locking wheel 33 is rotatably installed on one side of the locking block 11. The locking wheel 33 is locked between two adjacent locking blocks 19. A locking groove 34 is opened in the locking block 11. Multiple locking rails 35 are connected to one side of the adjusting sleeve 4. The locking groove 34 is adapted to the locking rail 35.

[0036] A sealing ring 36 is provided on one side of the sealing plate 50, and a sealing groove 37 is provided on one side of the fixing bracket 13. The sealing ring 36 is inserted into the sealing groove 37.

[0037] More specifically, when the pressure relief threshold needs to be adjusted according to actual usage requirements, firstly, rotate the movable plate 6, causing it to rotate one side of the thrust bearing 29, and causing the movable plate 6 to rotate the movable groove 7 to the position corresponding to the limiting plate 10. Then, push the locking sleeve 8 to slide, and the locking sleeve 8 will cause the connecting plate 9 and the limiting plate 10 to gradually slide through the movable groove 7. The locking sleeve 8 and the thrust bearing 29 cooperate to compress the movable spring 30. When the movable spring 30 is compressed to its limit, the limiting plate 10 closest to the locking sleeve 8 just passes through the movable groove 7 and slides to the other side of the movable plate 6. Then, rotate the movable plate 6 again, causing it to rotate the thrust bearing 29 and the movable groove 7 again, and causing the movable groove 7 to rotate to a position not corresponding to the limiting plate 10. The corresponding position of the positioning plate 10, and then the connecting plate 9, in conjunction with the limiting plate 10 closest to the locking sleeve 8, limits the locking sleeve 8 to one side of the movable plate 6, so that the inner wall of the locking sleeve 8 is not limited by the outer wall of the locking wheel 33. Then, the adjusting sleeve 4 is rotated in the forward direction. The adjusting sleeve 4 drives the locking block 11 to rotate in the forward direction through the locking rail 35 and the locking groove 34. Then, the locking block 11 drives the locking wheel 33 to roll out between the two locking blocks 19, and the locking wheel 33 will drive the locking block 11 to slide outward along the locking rail 35 and the locking groove 34. Then, the locking block 11 will drive the locking spring 15 to stretch outward. At the same time, the adjusting sleeve 4 will drive the inner mating sleeve 16 to rotate in the forward direction. Since the inner wall of the mating sleeve 16 and the outer wall of the movable sleeve 17 are connected by threads, as well as the slide rail 32 and the slide groove 31 The movable sleeve 17 is limited to prevent it from rotating. The movable sleeve 17 then slides along the slide rail 32 and slide groove 31, shortening the distance between the movable sleeve 17 and the sealing plate 50. This compresses the movable spring 18 to a certain extent, increasing the thrust exerted by the movable spring 18 on the sealing plate 50. Consequently, one side of the sealing plate 50 needs to withstand greater air pressure to be pushed open. When only a smaller air pressure is required to push open the sealing plate 50, the adjusting sleeve 4 is rotated in the reverse direction, following the steps described above. When the appropriate pressure relief threshold is reached, the rotation of the adjusting sleeve 4 is stopped, and the locking rail 35 moves the locking block 11 between the corresponding two locking blocks 19 via the locking groove 34. Then, the locking spring 15 is reset and pulled back. The movable locking block 11 slides inward along the locking rail 35 and locking groove 34, causing the locking block 11 to drive the locking wheel 33 to engage between the corresponding two locking blocks 19. Then, the movable plate 6 is rotated again, causing the movable plate 6 to drive the thrust bearing 29 and the movable groove 7 to rotate. When the movable groove 7 rotates to the position corresponding to the limit plate 10, the movable spring 30 pushes the locking sleeve 8 to slide and reset. The locking sleeve 8, through the connecting plate 9, drives the three limit plates 10 to slide and reset. When the movable spring 30 is fully reset, the other two limit plates 10 are exactly on both sides of the movable plate 6. Then, the movable plate 6 is rotated again, causing the movable plate 6 to drive the movable groove 7 and the thrust bearing 29 to rotate, causing the movable groove 7 to rotate to a position that does not correspond to the limit plate 10.At this point, the connecting plate 9, together with the two limiting plates 10, supports and limits the locking sleeve 8 to one side of the movable plate 6, making it difficult for the locking sleeve 8 to slide. Then, the inner wall of the locking sleeve 8 limits the outer wall of the locking wheel 33, preventing the locking wheel 33 and the locking block 11 from sliding outward. This achieves rotational limitation of the adjusting sleeve 4, preventing structural changes after threshold adjustment and ensuring structural stability after threshold adjustment.

[0038] In summary, during the use or operation of the overall equipment: When the equipment needs to be used, the upper mold 2 and lower mold 20 are first driven to close by the drive component 22 located below the fixed base 21. Then, the external hydraulic drive device pushes the mounting bracket 23 to lower the injection head 24, allowing the injection head 24 to pass through the guide hole 26 and enter the injection hole 25. Then, injection molding is performed in the space between the upper mold 2 and lower mold 20. During the injection process, when the internal pressure value is greater than the pressure relief threshold, the airflow pushes the sealing plate 50, causing the sealing plate 50 to slide along the slide rail 32 and the slide groove 31, and causing the sealing ring 36 on one side of the sealing plate 50 to disengage from the sealing groove 37. The sealing plate 50 will slide from the position of the wide-space block 14 to the position of the fixed rod 12. Then the distance between the sealing plate 50 and the moving sleeve 17 will shorten, squeezing the moving spring 18. Then the airflow will flow through the gap between the fixed rod 12 and the sealing plate 50 to the other side of the sealing plate 50, and then be discharged through the pressure relief pipe 5. After the pressure relief is completed, the moving spring 18 will push the sealing plate 50 to slide back along the slide groove 31 and the slide groove 31 to reset, so that the sealing plate 50 will abut against the side of the fixed frame 13 again, and the sealing plate 50 will move to the position corresponding to the wide-space block 14 while driving the sealing ring 36 on one side to re-embed into the sealing groove 37, so that the exhaust pipe 3 will be sealed again.

[0039] When the pressure relief threshold needs to be adjusted according to actual usage requirements, first rotate the movable plate 6, causing the thrust bearing 29 on one side to rotate, and causing the movable plate 6 to rotate the movable groove 7 to the position corresponding to the limiting plate 10. Then, push the locking sleeve 8 to slide, and the locking sleeve 8 will cause the connecting plate 9 and the limiting plate 10 to gradually slide through the movable groove 7. The locking sleeve 8 and the thrust bearing 29 cooperate to compress the movable spring 30. When the movable spring 30 is compressed to its limit, the limiting plate 10 closest to the locking sleeve 8 just passes through the movable groove 7 and slides to the other side of the movable plate 6. Then rotate the movable plate 6 again, causing the thrust bearing 29 and the movable groove 7 to rotate again, and causing the movable groove 7 to rotate to a position that is not in contact with the limiting plate 10. At the corresponding position, the connecting plate 9, in conjunction with the limiting plate 10 closest to the locking sleeve 8, limits the locking sleeve 8 to one side of the movable plate 6, so that the inner wall of the locking sleeve 8 is not limited by the outer wall of the locking wheel 33. Then, the adjusting sleeve 4 is rotated in the forward direction. The adjusting sleeve 4 drives the locking block 11 to rotate in the forward direction through the locking rail 35 and the locking groove 34. Then, the locking block 11 drives the locking wheel 33 to roll out between the two locking blocks 19, and the locking wheel 33 will drive the locking block 11 to slide outward along the locking rail 35 and the locking groove 34. Then, the locking block 11 will drive the locking spring 15 to stretch outward. At the same time, the adjusting sleeve 4 will drive the inner mating sleeve 16 to rotate in the forward direction. Since the inner wall of the mating sleeve 16 and the outer wall of the movable sleeve 17 are connected by threads, and the slide rail 32 and the slide groove 31 are offset... The movable sleeve 17 is limited to prevent it from rotating. The movable sleeve 17 then slides along the slide rail 32 and the slide groove 31, shortening the distance between the movable sleeve 17 and the sealing plate 50. This causes the movable spring 18 to be compressed to a certain extent, increasing the thrust exerted by the movable spring 18 on the sealing plate 50. Consequently, one side of the sealing plate 50 needs to withstand greater air pressure to be pushed open. When only a smaller air pressure is required to push open the sealing plate 50, simply reverse the steps described above by rotating the adjusting sleeve 4. When the appropriate pressure relief threshold is reached, stop rotating the adjusting sleeve 4 and allow the locking rail 35 to move the locking block 11 between the corresponding two locking blocks 19 via the locking groove 34. Then, the locking spring 15 resets and pulls back. The locking block 11 slides inward along the locking rail 35 and the locking groove 34, causing the locking block 11 to drive the locking wheel 33 to engage between the two corresponding locking blocks 19. Then, the movable plate 6 is rotated again, causing the movable plate 6 to drive the thrust bearing 29 and the movable groove 7 to rotate. When the movable groove 7 rotates again to the position corresponding to the limit plate 10, the movable spring 30 pushes the locking sleeve 8 to slide and reset. The locking sleeve 8, through the connecting plate 9, drives the three limit plates 10 to slide and reset. After the movable spring 30 is fully reset, the other two limit plates 10 are exactly on both sides of the movable plate 6. Then, the movable plate 6 is rotated again, causing the movable plate 6 to drive the movable groove 7 and the thrust bearing 29 to rotate again, causing the movable groove 7 to rotate to a position that does not correspond to the limit plate 10.At this point, the connecting plate 9, together with the two limiting plates 10, supports and limits the locking sleeve 8 to one side of the movable plate 6, making it difficult for the locking sleeve 8 to slide. Then, the inner wall of the locking sleeve 8 limits the outer wall of the locking wheel 33, preventing the locking wheel 33 and the locking block 11 from sliding outward. This achieves rotational limitation of the adjusting sleeve 4, preventing structural changes after threshold adjustment and ensuring structural stability after threshold adjustment.

[0040] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A shoe manufacturing injection molding compaction device, comprising a base (1), wherein an upper mold (2) is provided on one side of the base (1), characterized in that: An exhaust pipe (3) is provided above the upper mold (2). An adjusting sleeve (4) and a pressure relief pipe (5) are provided on one side of the exhaust pipe (3). A movable plate (6) is rotatably provided on the outside of the exhaust pipe (3). A movable groove (7) is provided on the movable plate (6). A locking sleeve (8) is slidably provided on the outside of the exhaust pipe (3). A connecting plate (9) is provided on one side of the locking sleeve (8). A limiting plate (10) is provided on one side of the connecting plate (9). Multiple locking blocks (11) are movably provided on one side of the adjusting sleeve (4). A fixing rod (12) is provided inside the pressure relief pipe (5). A fixing frame (13) is provided inside the exhaust pipe (3). A wide-space block (14) is provided at one end of the fixing rod (12). A retaining spring (15) is provided on one side of the block (11), a mating sleeve (16) is provided on the inner side of the adjusting sleeve (4), and a movable sleeve (17) is provided on the inner side of the pressure relief pipe (5). The outer wall of the movable sleeve (17) is movably connected to the inner wall of the mating sleeve (16) by a thread. The movable sleeve (17) is slidably installed on the outside of the fixed rod (12). A movable spring (18) is sleeved on the outside of the fixed rod (12). A sealing plate (50) is movably provided on one side of the fixed frame (13). The two ends of the movable spring (18) are respectively connected to the sealing plate (50) and the movable sleeve (17). Multiple locking blocks (19) are fixed on the outside of the exhaust pipe (3).

2. The injection molding compaction device for shoe production according to claim 1, characterized in that: The base (1) is detachably provided with a lower mold (20) on one side, and a fixed seat (21) is detachably installed on one side of the base (1). Multiple driving components (22) are detachably installed below the fixed seat (21), and the output ends of the driving components (22) are detachably connected to the upper mold (2).

3. The injection molding compaction device for shoe production according to claim 2, characterized in that: The base (1) is provided with a mounting bracket (23) on one side. An injection head (24) is detachably mounted on the mounting bracket (23). The upper mold (2) is provided with a corresponding injection hole (25). The fixed base (21) is provided with a corresponding guide hole (26).

4. The injection molding compaction device for shoe production according to claim 3, characterized in that: The base (1) has a guide groove (27) on one side, and the mounting bracket (23) has a guide block (28) fixed on one side, and the guide block (28) slides in the guide groove (27).

5. A shoe manufacturing injection compaction device according to any one of claims 1-4, characterized in that: A thrust bearing (29) is detachably provided on one side of the movable plate (6), and a movable spring (30) is movably sleeved on the outside of the exhaust pipe (3). The two ends of the movable spring (30) are respectively connected to the thrust bearing (29) and the retaining sleeve (8).

6. The injection molding compaction device for shoe production according to claim 1, characterized in that: The movable sleeve (17) has a sliding groove (31) on its outer side, and the exhaust pipe (3) has a slide rail (32) fixedly installed on its inner side. The sliding groove (31) and the slide rail (32) are adapted to each other.

7. The injection molding compaction device for shoe production according to claim 5, characterized in that: The locking block (11) is rotatably mounted with a locking wheel (33) on one side. The locking wheel (33) is engaged between two adjacent locking blocks (19). The locking block (11) has a locking groove (34). The adjusting sleeve (4) is connected to a plurality of locking rails (35) on one side. The locking groove (34) is adapted to the locking rails (35).

8. The injection molding compaction device for shoe production according to claim 6, characterized in that: A sealing ring (36) is provided on one side of the sealing plate (50), and a sealing groove (37) is provided on one side of the fixing frame (13), and the sealing ring (36) is inserted into the sealing groove (37).

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