Sole exhaust device for sole injection molding machine

Abstract

The utility model relates to the technical field of shoe sole injection molding machine equipment, especially a shoe sole exhaust device for shoe sole injection molding machine, including clamping support beam, one side of clamping support beam is equipped with multi -shaft linear guide rail assembly, one end of multi -shaft linear guide rail assembly is connected with clamping connecting piece, and the clamping connecting piece is equipped with connecting rod clamping piece, the connecting rod clamping piece is equipped with exhaust needle, and the shoe sole injection molding machine exhaust device of the application adopts integrated modular structure, and the exhaust needle is accurately positioned through multi -shaft guide rail, and hollow needle body is equipped with multiple height exhaust holes, and is stably controlled with pneumatic element, realizes the automatic overturning of mould and fixes, makes exhaust and injection molding procedure efficient link, and improves the forming quality, efficiency and security.

Description

Technical Field

[0001] This utility model relates to the technical field of shoe sole injection molding machine equipment, and in particular to a shoe sole exhaust device for shoe sole injection molding machines. Background Technology

[0002] In the modern footwear manufacturing industry, injection molding is one of the main processes for producing shoe soles. It involves injecting molten plastic into a closed mold cavity under high temperature and pressure, which then cools and solidifies to form a shoe sole product with specific shape and performance. However, during injection molding, because the mold components often form a highly enclosed space, a large amount of gas is generated inside the cavity when the molten material is injected at high speed. If this gas cannot be effectively and promptly expelled, it will form bubbles, voids, scorching, material shortages, and even surface defects inside the shoe sole, seriously affecting the appearance quality, structural strength, and performance of the sole. To solve this problem, traditional methods usually rely on pre-set simple... While single venting channels or fine-tuning of injection molding parameters can be used, these methods suffer from limited venting paths, low venting efficiency, and poor adaptability, making them unsuitable for complex sole structures or diverse production needs. Furthermore, although some devices have dedicated venting structures, in actual operation they often suffer from inaccurate positioning, complex operation, insufficient stability, and poor coordination with the injection molding process, failing to achieve efficient and reliable venting. In summary, traditional venting methods for shoe sole injection molding machines generally suffer from limited gas discharge paths, poor mold structure adaptability, inaccurate operation control, and insufficient coordination with the overall production process, making it difficult to meet the requirements of high-quality, high-efficiency modern shoe sole production.

[0003] Chinese patent discloses an injection molding machine for shoe soles (publication number: CN 212707712 U), comprising a housing, an injection mechanism, a drive mechanism, a cooling mechanism, and locking casters. The injection mechanism is installed in the housing and includes a working chamber, a turntable, multiple heat insulation plates, multiple metal shoe sole molds, an injection tube, a cylinder, a piston rod, a connecting block, and a shaped heating plate. The working chamber is located in the housing, and the opening of the working chamber is located on one side wall of the housing. However, traditional shoe sole injection molding machines have many drawbacks in their venting methods: after the mold is closed, the internal gas is difficult to expel. Traditional methods that rely on preset venting channels or fine-tuning injection parameters have problems such as limited venting paths, low efficiency, and poor adaptability, making it difficult to cope with complex structures and diverse needs. Some specialized venting structures are inaccurate in positioning, complex in operation, lack stability, and have poor coordination with the injection process, making it impossible to vent efficiently and reliably. The gas venting path, mold adaptability, operation control, and process coordination are all insufficient, failing to meet the requirements of high-quality and high-efficiency production. Therefore, a shoe sole venting device for shoe sole injection molding machines is needed. Utility Model Content

[0004] The purpose of this invention is to address the problem that existing shoe sole injection molding machines rely heavily on manual operation or semi-automated equipment for venting, resulting in an intermittent production process. This means that a series of operations, such as injection molding, cooling, mold opening, venting, and part removal, must be completed at one workstation before the next product can be produced. This model is inefficient and underutilizes equipment. More importantly, manual operation has inherent drawbacks such as poor stability, high labor intensity, and safety hazards. Therefore, this invention proposes a shoe sole venting device for shoe sole injection molding machines.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: A shoe sole venting device for a shoe sole injection molding machine, comprising a clamping support beam, a multi-axis linear guide rail assembly on one side of the clamping support beam, a clamping connector connected to one end of the multi-axis linear guide rail assembly, a connecting rod clamping component on the clamping connector, and an venting pin on the connecting rod clamping component. This solution integrates the venting pin onto a multi-directionally adjustable guide rail system, realizing the function of targeted venting operations at different positions inside the mold; the combination of the clamping connector and the connecting rod clamping component makes the positioning of the venting pin more flexible and stable, effectively solving the problems of inaccurate positioning and inconvenient operation in traditional venting methods, and providing a structural basis for timely gas discharge during shoe sole injection molding.

[0006] Preferably, the interior of the venting needle rod is a hollow structure from the top circular plane to the bottom conical needle tip. A first vent hole is located in the lower middle part of the side wall of the venting needle rod, and a second vent hole is located below the back of the first vent hole. The physical height of the second vent hole is lower than that of the first vent hole, and the difference in height is between 0.3 and 1.5 mm. Both the first and second vent holes are rectangular grooves that extend radially through the rod, with the opening direction of the rectangular groove perpendicular to the rod axis. The venting needle is made of copper alloy. This venting needle, with its hollow design and two radial vent holes at different heights, can form multi-position gas channels after the needle penetrates the mold cavity, facilitating the efficient discharge of residual air at different depths. The height difference between the two vent holes allows gas to be guided out from different levels, avoiding localized pressure buildup. The radially extending structure of the rectangular groove increases the venting flow area, while the copper alloy material ensures the thermal conductivity and structural strength of the needle, thus improving the overall venting effect and durability.

[0007] Preferably, the clamping connector includes a clamping cylinder, the bottom of which is provided with a cylinder bracket, and one end of which is connected to an opening and closing gripper. The connecting rod clamping component includes an L-shaped connecting plate, which is associated with and cooperates with an exhaust needle. One end of the L-shaped connecting plate is connected to a transmission connecting rod, and one end of the transmission connecting rod is provided with a clamping plate and a return torsion spring at the connection point. Both the transmission connecting rod and the L-shaped connecting plate are associated with the cylinder bracket. A double-rod lifting cylinder is provided on one side of the back of the clamping cylinder. The double-rod lifting cylinder includes a piston cylinder and a piston double rod associated with the piston cylinder. One end of the piston double rod is connected to a push plate, and one end of the push plate is connected to a shoe sole fixing pressure plate. This structure uses a cylinder to drive the clamping and releasing actions, making the connection between the venting needle and the mold more reliable and easier to control. The return torsion spring provides elastic restoring force, ensuring that the mechanism can automatically reset after the operation is completed, improving the convenience and safety of use. At the same time, the double-rod lifting cylinder is used to fix the shoe sole mold, ensuring the stability of the mold position during the venting process and preventing venting failure due to vibration or displacement. Overall, the operating accuracy and reliability of the device are improved.

[0008] Preferably, the multi-axis linear guide rail assembly includes a Z-axis clamping guide rail component, an X-axis clamping guide rail component on one side of the Z-axis clamping guide rail component, and a support plate connected to the bottom end of the clamping support beam, with a Y-axis clamping guide rail component on the support plate. By setting multi-directional (at least including X, Y, and Z directions) linear guide rails, the venting pin can be flexibly adjusted in three-dimensional space to precisely meet the venting needs of different areas of the mold. This modular guide rail combination design not only improves the freedom of movement of the device but also enhances its adaptability to different mold structures and shoe sole shapes, providing structural assurance for achieving refined and automated venting operations.

[0009] Preferably, a main linear guide rail is provided on one side of the clamping support beam, a support beam is provided on one side of the main linear guide rail, a first support arm and a second support arm are respectively provided at the bottom of the support beam, a base plate is provided at the bottom of the first support arm, a disc is provided on one side of the base plate, a working plate is provided at the center of the bottom of the disc, a plurality of mold slots are provided on the disc, the number of mold slots is 20 to 25 and they are arranged at equal intervals in a circumferential array, a plurality of shoe sole molds are provided on the mold slots, the shoe sole molds are composed of upper two demolding molds, a middle frame mold and lower two demolding molds combined, the upper two demolding molds and the lower two demolding molds are all in cooperation with the middle frame mold, a flipping mold assembly is provided on one side of the main linear guide rail, a top mold assembly is provided on the other side of the base plate, the flipping mold assembly and the top mold assembly are both associated with the shoe sole molds. This solution constructs a complete and modular working platform for a shoe sole injection molding machine. Through the array arrangement of discs and mold slots, it realizes the possibility of multi-mold cyclic operation and improves production efficiency. The reasonable layout of the main linear guide and support structure provides a stable motion platform for the venting device. At the same time, the setting of the mold flipping and top mold components allows the mold opening, closing and positioning to be organically combined with the venting operation, forming a collaborative working mechanism and enhancing the overall system's coherence and automation level.

[0010] Preferably, a movable mold rod is provided at the center of one side of the upper two mold release sections, and first mold rods are provided on both sides of the movable mold rod. A second mold rod is provided at the center of the other side of the upper two mold release sections, and two third mold rods are provided on both sides of the middle frame mold. The number of third mold rods is two and they are correspondingly arranged. An extrusion outlet is provided at the center of the top of the upper two mold release sections. This mold structure, through the setting of multiple mold rods, provides clear operating points for the mold flipping and top mold components, making the opening and closing of the mold more precise and controllable. The cooperation between the movable mold rod and the fixed mold rod enhances the flexibility of mold assembly and disassembly. The extrusion outlet at the top helps to remove excess injection molding material, prevents blockage and defects, and improves the functional integrity and operational convenience of the mold.

[0011] Preferably, the mold-flipping assembly includes a mold-flipping support beam. A mold-flipping Z-guide rail is located on one side of the mold-flipping support beam, and a mold-flipping X-guide rail is located on the other side of the Z-guide rail. The X-guide rail cooperates with the main linear guide rail. A servo motor is located on one side of the mold-flipping support beam, and a connecting seat is located on the other side. A single-rod telescopic cylinder is mounted on the connecting seat, and a pressure rod is connected to one end of the bottom of the single-rod telescopic cylinder. An oblique connecting rod is provided between the mold-flipping support beam and the connecting seat. A third mold hook is located at one end of the bottom of the mold-flipping support beam, and a second mold hook is located at the bottom of the connecting seat. The third mold hook is associated with a third mold rod. The mold-flipping assembly, through the combined drive of the servo motor and the cylinder, achieves precise control of the mold-flipping action, facilitating cleaning, venting, or maintenance of the mold's interior. The design of the single-rod telescopic cylinder and the pressure rod ensures controllable force applied to the mold during flipping, preventing damage. The cooperation between the mold hook and the mold rod ensures stable gripping and positioning of the mold during flipping, comprehensively improving the automation level and safety of mold operation.

[0012] Preferably, the top mold assembly includes a top mold support beam, an L-shaped bracket on one side of the top mold support beam, a top mold cylinder on the L-shaped bracket, the top mold cylinder including a piston cylinder and a piston rod associated with the piston cylinder, a mounting plate connected to one end of the piston rod, a plurality of guide rods on the mounting plate, a top plate on the top of the guide rods, and an auxiliary positioning plate on the guide rods, the auxiliary positioning plate being associated with the top mold support beam. The top mold assembly, through cylinder drive and the cooperation of the guide rods, achieves precise vertical lifting and positioning of the shoe sole mold, ensuring the correct position of the mold during injection molding and venting processes; the auxiliary positioning plate enhances the stability of the top mold process, preventing mold skewing or misalignment; this structure provides the prerequisite for accurate insertion of the venting needle, and also facilitates the smooth opening and closing and repeated use of the mold, improving the overall reliability of the device and the consistency of the finished product.

[0013] The advantages of this utility model are: This application provides a sole venting device for a shoe sole injection molding machine. By constructing an integrated, modular, and highly collaborative mechanical structure system, it effectively solves the problem of air escaping due to the tight closure of the mold during traditional shoe sole injection molding. Based on a clamping support beam and combined with a multi-axis linear guide rail assembly, the device achieves precise positioning and flexible adjustment of the venting pin in three-dimensional space. This allows it to quickly and accurately penetrate key positions in the mold cavity to meet the venting needs of different mold structures, sole shapes, and injection stages. The venting pin itself uses a hollow rod body with radial venting holes of different heights. Made of copper alloy, it not only enhances gas conduction capacity but also effectively adapts to high-temperature environments, ensuring rapid gas release in the early stages of injection molding and preventing defects such as bubbles, insufficient material, and scorching. Through the coordinated control of pneumatic components such as clamping cylinders and double-rod lifting cylinders, the clamping, movement, insertion, and withdrawal processes of the venting pin are stable and reliable. Simultaneously, the shoe sole fixing plate further secures the mold. This device enhances mold stability during operation, preventing displacement or vibration from affecting venting. Furthermore, it integrates a mold-flipping assembly and a mold-top assembly, working in conjunction with the disc mold array on the main work platform to achieve automatic mold flipping, lifting, and positioning. This allows venting operations to be seamlessly integrated with the injection molding process, forming a continuous and efficient production flow. The overall structure, through the rational layout of components such as the main linear guide rail, support beams, and support arms, not only ensures coordinated operation between functional modules but also improves the overall rigidity and ease of operation. Functionally, it achieves full-process optimization from mold fixing and precise venting to mold cycle operation, significantly improving the molding quality, production efficiency, and operational safety of shoe sole injection molding, and possesses excellent adaptability and practicality. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This utility model Figure 1 Enlarged view of I in the middle.

[0017] Figure 3 This is a schematic diagram of the structure of this utility model.

[0018] Figure 4 This utility model Figure 3 Enlarged view of section II.

[0019] Figure 5 This is a schematic diagram of the structure of this utility model.

[0020] Figure 6 This utility model Figure 5 Enlarged view of section III.

[0021] Figure 7 This is a schematic diagram of the exhaust needle structure of this utility model.

[0022] Figure 8 This utility model Figure 7 Enlarged view of IV.

[0023] Figure 9 This is a top view of the exhaust needle structure of this utility model.

[0024] Figure 10 This utility model Figure 9 Sectional view of AA.

[0025] In the diagram: 1. Working plate; 2. Mold groove; 3. Disc; 4. Mold flipping support beam; 5. Servo motor; 6. Single-rod telescopic cylinder; 7. Support beam; 8. Clamping support beam; 9. Main linear guide rail; 10. Second support arm; 11. Clamping Y-axis guide rail component; 12. Angled connecting rod; 13. Top plate; 14. Auxiliary positioning plate; 15. First support arm; 16. Base plate; 17. Top mold support beam; 18. L-shaped bracket; 19. Top mold cylinder; 20. Mounting plate; 21. Guide rod; 22. Connecting seat; 25. Pressure rod; 2 9. Upper two-part mold release; 30. Middle frame mold; 31. Lower two-part mold release; 32. Second mold hook; 33. Third mold rod; 34. Third mold hook; 35. Movable mold rod; 36. First mold rod; 37. Extrusion outlet; 38. Second mold rod; 39. Opening and closing gripper; 40. Clamping cylinder; 41. Cylinder bracket; 42. Double-rod lifting cylinder; 43. Shoe sole fixing pressure plate; 44. Transmission connecting rod; 45. Reset torsion spring; 46. Clamping plate; 48. Exhaust needle; 49. L-shaped connecting plate; 50. First exhaust hole; 51. Second exhaust hole. Detailed Implementation

[0026] 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 scope of protection of the present utility model. Example

[0027] Please see Figure 1-10As shown, a shoe sole venting device for a shoe sole injection molding machine includes a clamping support beam 8. A multi-axis linear guide rail assembly is provided on one side of the clamping support beam 8. A clamping connector is connected to one end of the multi-axis linear guide rail assembly. A connecting rod clamping component is provided on the clamping connector, and the connecting rod clamping component is equipped with a venting pin 48. This solution integrates the venting pin 48 onto a multi-directionally adjustable guide rail system, enabling targeted venting operations at different locations inside the mold. The combination of the clamping connector and the connecting rod clamping component makes the positioning of the venting pin 48 more flexible and stable, effectively solving the problems of inaccurate positioning and inconvenient operation in traditional venting methods, and providing a structural basis for timely gas discharge during shoe sole injection molding.

[0028] In this embodiment, the interior of the venting needle 48 is a hollow structure from the top circular plane to the bottom conical tip. A first venting hole 50 is located in the lower middle part of the side wall of the venting needle 48. A second venting hole 51 is located below the back of the first venting hole 50. The physical height of the second venting hole 51 is lower than that of the first venting hole 50, and the difference in height is between 0.3 and 1.5 mm. Both the first venting hole 50 and the second venting hole 51 are rectangular grooves that extend radially through the rod, with the opening direction of the rectangular groove perpendicular to the rod axis. The venting needle 48 is made of copper alloy. This venting needle 48 features a hollow design and two radial venting holes at different heights, forming multi-position gas channels after the needle penetrates the mold cavity, facilitating the efficient discharge of residual air at different depths. The height difference between the two venting holes allows gas to be guided out from different levels, avoiding localized pressure buildup. The radially extending structure of the rectangular groove increases the venting flow area, while the copper alloy material ensures the thermal conductivity and structural strength of the needle, thus improving the overall venting effect and durability.

[0029] In this embodiment, the clamping connector includes a clamping cylinder 40, a cylinder bracket 41 at the bottom of the clamping cylinder 40, and an opening and closing gripper 39 connected to one end of the clamping cylinder 40. The connecting rod clamping component includes an L-shaped connecting plate 49, which is associated with and cooperates with the exhaust needle 48. A transmission connecting rod 44 is connected to one end of the L-shaped connecting plate 49. A clamping plate 46 is provided at the bottom end of the transmission connecting rod 44, and a reset torsion spring 45 is provided at the connection point. Both the transmission connecting rod 44 and the L-shaped connecting plate 49 are associated with the cylinder bracket 41. A double-rod lifting cylinder 42 is provided on one side of the back of the clamping cylinder 40. The double-rod lifting cylinder 42 includes a piston cylinder and a piston double rod associated with the piston cylinder. A push plate is connected to one end of the piston double rod, and a shoe sole fixing pressure plate 43 is connected to one end of the push plate. This structure uses a cylinder to drive the clamping and releasing actions, making the connection between the venting needle 48 and the mold more reliable and easier to control. The return torsion spring 45 provides elastic restoring force, ensuring that the mechanism can automatically reset after the operation is completed, improving the convenience and safety of use. At the same time, the double-rod lifting cylinder 42 is used to fix the shoe sole mold, ensuring the stability of the mold position during the venting process and preventing venting failure due to vibration or displacement. Overall, the operating accuracy and reliability of the device are improved.

[0030] In this embodiment, the multi-axis linear guide rail assembly includes a Z-axis clamping guide rail component, an X-axis clamping guide rail component on one side of the Z-axis clamping guide rail component, and a support plate connected to one bottom end of the clamping support beam 8. A Y-axis clamping guide rail component 11 is provided on the support plate. By setting multi-directional (at least including X, Y, and Z directions) linear guide rails, the venting pin 48 can flexibly adjust its position in three-dimensional space to accurately correspond to the venting needs of different areas of the mold. This modular guide rail combination design not only improves the degree of freedom of movement of the device but also enhances its adaptability to different mold structures and shoe sole shapes, providing structural guarantees for achieving refined and automated venting operations.

[0031] In this embodiment, a main linear guide rail 9 is provided on one side of the clamping support beam 8, and a support beam 7 is provided on one side of the main linear guide rail 9. A first support arm 15 and a second support arm 10 are respectively provided at the bottom of the support beam 7. A base plate 16 is provided at the bottom of the first support arm 15. A disk 3 is provided on one side of the base plate 16. A working plate 1 is provided at the center of the bottom of the disk 3. A plurality of mold slots 2 are provided on the disk 3. The number of mold slots 2 is 20 to 25 and they are arranged at equal intervals in a circumferential array. A plurality of shoe sole molds are provided on the mold slots 2. The shoe sole mold is composed of two upper mold-removing parts 29, a middle frame mold 30, and two lower mold-removing parts 31. The two upper mold-removing parts 29 and the two lower mold-removing parts 31 are all in cooperation with the middle frame mold 30. A mold-flipping assembly is provided on one side of the main linear guide rail 9, and a top mold assembly is provided on the other side of the base plate 16. The mold-flipping assembly and the top mold assembly are both associated with the shoe sole mold. This solution constructs a complete and modular working platform for a shoe sole injection molding machine. Through the array arrangement of disc 3 and mold slot 2, the possibility of multi-mold cyclic operation is realized, improving production efficiency. The reasonable layout of the main linear guide 9 and the support structure provides a stable motion platform for the venting device. At the same time, the setting of the mold flipping and top mold components allows the mold opening, closing, positioning and venting operations to be organically combined, forming a collaborative working mechanism and enhancing the coherence and automation of the overall system.

[0032] In this embodiment, a movable mold rod 35 is provided at the center of one side of the upper two mold release 29, and first mold rods 36 are provided on both sides of the movable mold rod 35. A second mold rod 38 is provided at the center of the other side of the upper two mold release 29, and third mold rods 33 are provided on both sides of the middle frame mold 30. There are two corresponding third mold rods 33, and an extrusion outlet 37 is provided at the center of the top of the upper two mold release 29. This mold structure, through the setting of multiple mold rods, provides clear operating points for the mold flipping and top mold components, making the opening and closing of the mold more precise and controllable. The cooperation between the movable mold rod 35 and the fixed mold rod enhances the flexibility of mold assembly and disassembly. The extrusion outlet at the top helps to remove excess injection molding material, prevents blockage and defects, and improves the functional integrity and operational convenience of the mold.

[0033] In this embodiment, the mold-flipping assembly includes a mold-flipping support beam 4. A mold-flipping Z-guide rail is provided on one side of the mold-flipping support beam 4, and a mold-flipping X-guide rail is provided on the other side of the mold-flipping Z-guide rail. The mold-flipping X-guide rail cooperates with the main linear guide rail 9. A servo motor 5 is provided on one side of the mold-flipping support beam 4, and a connecting seat 22 is provided on the other side of the mold-flipping support beam 4. A single-rod telescopic cylinder 6 is mounted on the connecting seat 22, and a pressure rod 25 is connected to one end of the bottom of the single-rod telescopic cylinder 6. An oblique connecting rod 12 is provided between the mold-flipping support beam 4 and the connecting seat 22. A third mold hook 34 is provided at one end of the bottom of the mold-flipping support beam 4, and a second mold hook 32 is provided at the bottom of the connecting seat 22. The third mold hook 34 is associated with a third mold rod 33. The mold flipping assembly achieves precise control of the mold flipping action through the combined drive of servo motor 5 and cylinder, facilitating cleaning, venting, or maintenance of the mold interior. The design of single-rod telescopic cylinder 6 and pressure rod 25 makes the force applied to the mold during the flipping process controllable, avoiding damage. The cooperation between the mold hook and mold rod ensures the stable gripping and positioning of the mold during the flipping process, improving the overall automation level and safety of mold operation.

[0034] In this embodiment, the top mold assembly includes a top mold support beam 17. An L-shaped bracket 18 is provided on one side of the top mold support beam 17. A top mold cylinder 19 is mounted on the L-shaped bracket 18. The top mold cylinder 19 includes a piston cylinder and a piston rod associated with the piston cylinder. One end of the piston rod is connected to a mounting plate 20. Several guide rods 21 are provided on the mounting plate 20. A top plate 13 is provided on the top of each guide rod 21. An auxiliary positioning plate 14 is provided on each guide rod 21 and is associated with the top mold support beam 17. The top mold assembly, through cylinder drive and the cooperation of the guide rods 21, achieves precise vertical lifting and positioning of the shoe sole mold, ensuring the correct position of the mold during injection molding and venting. The auxiliary positioning plate 14 enhances the stability of the top mold process, preventing mold skewing or misalignment. This structure provides the prerequisite for the accurate insertion of the venting needle 48 and also facilitates the smooth opening and closing and repeated use of the mold, improving the overall reliability of the device and the consistency of the finished product.

[0035] The implementation principle of this embodiment is as follows: the disc 3 rotates intermittently under the drive of the driving device, and the mold assembly that has completed injection molding and undergone preliminary cooling rotates with the disc 3 to the bottom of the clamping assembly and the top mold assembly.

[0036] First, the third mold hook 34 at the bottom of the mold support beam 4 descends to a position below the third mold rod 33 of the middle frame mold 30. The second mold hook 32 similarly moves to a position below the second mold rod 38 in preparation. Next, the top mold assembly begins operation. The top mold cylinder 19 drives the piston rod upwards, causing the mounting plate 20 and the top plate 13 to rise smoothly and vertically along the guide rod 21. The top plate 13 precisely acts on the movable mold rods 35 and the first mold rod 36 of the upper two mold release 29s, slightly pushing the upper two mold release 29s out of the mold cavity. Then, the... The second mold hook 32 hooks the second mold rod 38 and pulls apart the upper two mold release 29. Then, the pressure rod 25 assembly (driven by the single-rod telescopic cylinder 6) on the connecting seat 22 is pressed down to the surface of the shoe sole to fix and position it and perform initial compression and air release. Then, the second mold hook 32 at the bottom of the connecting seat 22 is activated to hook the second mold rod 38 of the upper two mold release 29, causing the upper two mold release 29 to separate from the middle frame mold 30. Then, the third mold hook 34 hooks the third mold rod 33 on the middle frame mold 30, causing the middle frame mold 30 to separate from the lower two mold release 31.

[0037] The single-rod telescopic cylinder 6 drives the pressure rod 25 to rise, releasing it from its fixed position on the sole. The clamping assembly, which is already in place, begins to operate. It moves along the guide rails in the X, Y, and Z directions, so that the opening and closing claw 39 at the end is precisely positioned at the heel of the sole. The clamping cylinder 40 drives the opening and closing claw 39, which in turn drives the clamping mechanism consisting of the L-shaped connecting plate 49, the transmission link 44, and the clamping plate 46, to gently and firmly clamp the sole. Almost simultaneously with the completion of the clamping action, since the venting pin 48 is coaxial with the clamping plate 46, the venting pin 48 is naturally aligned with the sole. At this time, the double-rod lifting cylinder 42 pushes the push plate and the sole fixing pressure plate 43 down to press the sole firmly in the working position, preventing it from shifting or vibrating in subsequent operations. Then, the exhaust needle 48 is driven by the connecting rod clamp to insert. Utilizing its hollow rod structure and two radial exhaust holes (first exhaust hole 50 and second exhaust hole 51) at different heights in the lower part of the rod, the gas generated inside the sole cavity is quickly guided into the needle body and discharged, avoiding the accumulation of gas that may cause bubbles, voids, scorching, or surface defects. Finally, it is lifted, moved laterally, and placed into a conveyor belt or collection container to complete the removal of the finished product.

[0038] After all the above actions are completed, the disc 3 continues to rotate one station and repeats the above steps, thereby realizing fully automated and continuous cyclic production of venting, demolding, and mold opening.

[0039] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A shoe sole venting device for a shoe sole injection molding machine, comprising a clamping support beam (8), wherein a multi-axis linear guide rail assembly is provided on one side of the clamping support beam (8), a clamping connector is connected to one end of the multi-axis linear guide rail assembly, a connecting rod clamping member is provided on the clamping connector, and the connecting rod clamping member is provided with an venting needle (48).

2. The shoe sole venting device for a shoe sole injection molding machine according to claim 1, characterized in that: The exhaust needle (48) has a hollow structure inside from the top circular plane to the bottom conical needle tip. The lower middle part of the side wall of the exhaust needle (48) has a first exhaust hole (50). The back of the first exhaust hole (50) has a second exhaust hole (51). The physical height of the second exhaust hole (51) is lower than that of the first exhaust hole (50), and the difference in physical height between the two is 0.3-1.5 mm. The first exhaust hole (50) and the second exhaust hole (51) are both rectangular grooves that penetrate the radial direction of the rod and the opening direction of the rectangular groove is perpendicular to the axis of the rod. The exhaust needle is made of copper alloy.

3. The shoe sole venting device for a shoe sole injection molding machine according to claim 1, characterized in that: The clamping connector includes a clamping cylinder (40), the bottom of which is provided with a cylinder bracket (41), and one end of the clamping cylinder (40) is connected to an opening and closing gripper (39). The connecting rod clamping component includes an L-shaped connecting plate (49), which is associated with and cooperates with an exhaust needle (48). One end of the L-shaped connecting plate (49) is connected to a transmission connecting rod (44), and one end of the transmission connecting rod (44) is provided with a clamping plate (46) and a reset torsion spring (45) is provided at the connection. Both the transmission connecting rod (44) and the L-shaped connecting plate (49) are associated with the cylinder bracket (41). A double-rod lifting cylinder (42) is provided on one side of the back of the clamping cylinder (40). The double-rod lifting cylinder (42) includes a piston cylinder and a piston double rod associated with the piston cylinder. One end of the piston double rod is connected to a push plate, and one end of the push plate is connected to a shoe sole fixing pressure plate.

4. A shoe sole venting device for a shoe sole injection molding machine according to claim 1, characterized in that: The multi-axis linear guide rail assembly includes a Z-axis guide rail clamping component, an X-axis guide rail clamping component on one side of the Z-axis guide rail clamping component, a support plate connected to one end of the bottom of the clamping support beam (8), and a Y-axis guide rail clamping component (11) on the support plate.

5. A shoe sole venting device for a shoe sole injection molding machine according to claim 1, characterized in that: The clamping support beam (8) is provided with a main linear guide rail (9) on one side, and a support beam (7) is provided with a support crossbeam (7) on one side. The support crossbeam (7) is provided with a first support arm (15) and a second support arm (10) at the bottom. The first support arm (15) is provided with a base plate (16) at the bottom. A disc (3) is provided with a side of the base plate (16). A working plate (1) is provided at the center of the bottom of the disc (3). The disc (3) is provided with a number of mold slots (2). The number of mold slots (2) is as follows: 20 to 25 are arranged in a circular array at equal intervals. The mold groove (2) is provided with several shoe sole molds. The shoe sole mold is composed of two upper molds (29), a middle frame mold (30) and two lower molds (31). The two upper molds (29) and the two lower molds (31) are all in cooperation with the middle frame mold (30). A flipping mold assembly is provided on one side of the main linear guide rail (9), and a top mold assembly is provided on the other side of the bottom plate (16). The flipping mold assembly and the top mold assembly are both associated with the shoe sole mold.

6. A shoe sole venting device for a shoe sole injection molding machine according to claim 5, characterized in that: The upper two demolding molds (29) are provided with a movable mold rod (35) at the center of one side, and a first mold rod (36) is provided on both sides of the movable mold rod (35). The upper two demolding molds (29) are provided with a second mold rod (38) at the center of the other side. The middle frame mold (30) is provided with a third mold rod (33) on both sides. There are two third mold rods (33) and they are set in a corresponding manner. The upper two demolding molds (29) are provided with an extrusion outlet (37) at the center of the top.

7. A shoe sole venting device for a shoe sole injection molding machine according to claim 5, characterized in that: The mold-flipping assembly includes a mold-flipping support beam (4), a mold-flipping Z-guide rail is provided on one side of the mold-flipping support beam (4), a mold-flipping X-guide rail is provided on one side of the mold-flipping Z-guide rail, the mold-flipping X-guide rail cooperates with the main linear guide rail (9), a servo motor (5) is provided on one side of the mold-flipping support beam (4), a connecting seat (22) is provided on the other side of the mold-flipping support beam (4), a single-rod telescopic cylinder (6) is installed on the connecting seat (22), a pressure rod (25) is connected to one end of the bottom of the single-rod telescopic cylinder (6), and an oblique connecting rod (12) is provided between the mold-flipping support beam (4) and the connecting seat (22).

8. A shoe sole venting device for a shoe sole injection molding machine according to claim 7, characterized in that: The bottom end of the formwork support beam (4) is provided with a third formwork hook (34), the bottom of the connecting seat (22) is provided with a second formwork hook (32), and the third formwork hook (34) is associated with the third formwork rod (33).

9. A shoe sole venting device for a shoe sole injection molding machine according to claim 5, characterized in that: The top mold assembly includes a top mold support beam (17), an L-shaped bracket (18) is provided on one side of the top mold support beam (17), a top mold cylinder (19) is provided on the L-shaped bracket (18), the top mold cylinder (19) includes a piston cylinder and a piston rod associated with the piston cylinder, one end of the piston rod is connected to a mounting plate (20), a plurality of guide rods (21) are provided on the mounting plate (20), a top plate (13) is provided on the top of the guide rods (21), an auxiliary positioning plate (14) is provided on the guide rods (21), and the auxiliary positioning plate (14) is associated with the top mold support beam (17).

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