Automatic shoe sole molding mechanism with locking mechanism

Abstract

This invention discloses an automatic mold-forming mechanism for shoe soles with a locking mechanism, relating to the field of shoe manufacturing machinery and equipment technology. It includes a base and a support. A fixed mold is fixedly mounted on the base, and a rotating mold is fixedly mounted on the support. The fixed mold and rotating mold close together to form a molding cavity. A support seat is rotatably mounted on the support, and a fixed shell is fixedly mounted on the base. The bottom of the support seat is disposed within the fixed shell. The support seat has a first abutting surface, and the fixed shell has a second abutting surface. The first abutting surface and the second abutting surface abut against each other. When the first abutting surface abuts against the second abutting surface, the support seat is in a fixed state; when the first abutting surface disengages from the second abutting surface, the support seat is in a free state. It also includes a clamping assembly, which clamps the rotating mold and the fixed mold together after the rotating mold rotates and merges with the fixed mold.

Description

Technical Field

[0001] This invention relates to the field of shoe manufacturing machinery and equipment technology, specifically to an automatic shoe sole molding and forming mechanism with a locking mechanism. Background Technology

[0002] As a type of special protective footwear, safety shoes must simultaneously meet multiple safety performance requirements, including abrasion resistance, oil resistance, impact resistance, and puncture resistance. They are typically made of materials such as rubber and modified polyurethane, through compression molding and vulcanization or injection molding. This process places strict requirements on the precision of mold closing, the sealing of the parting surface, and the alignment accuracy of the mold cavity. Deviations in mold alignment can not only cause appearance and dimensional defects such as excessively thick burrs and out-of-tolerance dimensions, but also easily lead to misalignment of protective components such as the internal steel toe cap and puncture-resistant midsole, directly affecting the safety protection level of the safety shoes. Therefore, the stability and alignment accuracy of the molding die are core elements in ensuring the quality of safety shoes.

[0003] Currently, most safety shoe sole molding equipment in the industry adopts a side-mounted rotating mold-closing structure. That is, the upper mold and the lower mold are connected by a hinge shaft and a flipping arm on the same side of the equipment. When the mold is closed, the drive mechanism drives the upper mold to flip downward around the hinge axis and precisely engage with the fixed lower mold to form a complete cavity. When the mold is opened, the upper mold flips upward and lifts up to expose the lower mold cavity so that the feeding and picking operations can be completed.

[0004] During the production process, frequent opening and closing will cause wear at the rotating hinge of the rotating mold. After a certain period of time, this will lead to a mold closing deviation between the rotating mold and the fixed mold. Furthermore, if slight wear occurs after the rotating mold and the fixed mold have been used for a long time, the hinge point of the rotating mold will be subjected to mold closing pressure during mold closing because the hinge point of the rotating mold is rigidly connected. This will aggravate the deformation of the hinge point of the rotating mold and reduce the pass rate of shoe sole molding. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic shoe sole molding mechanism with a locking mechanism to overcome the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An automatic mold-forming mechanism for shoe soles with a locking mechanism includes a base and a support. A fixed mold is fixedly mounted on the base, and a rotating mold is fixedly mounted on the support. The fixed mold and the rotating mold are closed to form a molding cavity. A support base is rotatably mounted on the bracket, and a fixed shell is fixedly mounted on the base. The bottom of the support base is located inside the fixed shell. A first abutting surface is provided on the support base, and a second abutting surface is provided on the fixed shell. The first abutting surface and the second abutting surface abut against each other. When the first abutting surface and the second abutting surface are in contact, the support is in a fixed state; when the first abutting surface and the second abutting surface are separated, the support is in a free state. It also includes a clamping assembly, which clamps the rotating mold and the fixed mold together after the rotating mold rotates and merges with the fixed mold.

[0007] Preferably, a first spring is provided between the support base and the fixed shell, and a limiting tube is fixedly provided on the fixed shell, the limiting tube being located inside the first spring.

[0008] Preferably, the clamping assembly includes a pull rod, a tensioning plate is fixedly mounted on the bracket, a trapezoidal groove is provided on the tensioning plate, and a trapezoidal block is fixedly mounted on the pull rod, with the trapezoidal block abutting against the trapezoidal groove.

[0009] Preferably, a fixing plate is fixedly disposed on the fixing shell, a guide groove is provided on the fixing plate, and a rectangular block is fixedly disposed on the pull rod, the rectangular block being slidably disposed in the guide groove.

[0010] Preferably, a top rod is slidably disposed on the fixing plate, and the top rod abuts against the rectangular block; A second spring is provided between the fixing plate and the top rod, and the two ends of the second spring are fixedly connected to the fixing plate and the top rod respectively.

[0011] Preferably, a vertical rod is slidably mounted on the base, a lifting plate is slidably mounted on the vertical rod, an inclined groove is provided on the lifting plate, and a protrusion is fixedly mounted on the pull rod, the protrusion being slidably mounted in the inclined groove.

[0012] Preferably, a long plate is fixedly provided on the lifting plate, and an abutment pin is fixedly provided on the long plate, the abutment pin abutting against the support seat.

[0013] Preferably, a hydraulic rod is fixedly installed on the base, and the telescopic end of the hydraulic rod is fixedly connected to the long plate.

[0014] Preferably, the guide groove is L-shaped, and when the rectangular block moves to the corner of the guide groove, it abuts against the top rod.

[0015] In the above technical solution, the automatic mold-forming mechanism for shoe soles with a locking mechanism provided by the present invention has the following beneficial effects: When the rotating mold rotates, the first abutting surface and the second abutting surface abut together to ensure the stability of the rotating mold during rotation. After the rotating mold and the fixed mold are closed, the first abutting surface and the second abutting surface are disengaged. Then, the clamping assembly is used to clamp the rotating mold and the fixed mold together to form the mold. Even if there is slight wear at the contact point between the rotating mold and the fixed mold, the rotating mold and the fixed mold can still be closed. The bracket drives the support seat to move downward to avoid the rotational connection between the bracket and the support seat, which would restrict the bracket and affect the closing of the rotating mold and the fixed mold after slight wear. At the same time, it avoids the phenomenon of flash on the molded shoe sole caused by slight wear at the contact point between the rotating mold and the fixed mold, thus improving the pass rate.

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0017] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure provided in an embodiment of the present invention; Figure 3 Provided for embodiments of the present invention Figure 2 Enlarged view of point A in the image; Figure 4 This is a schematic diagram of the rotating mold and support structure provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the clamping assembly structure provided in an embodiment of the present invention; Figure 6 An exploded view of the clamping assembly provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of a fixed shell structure provided in an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures: 1. Base; 11. Fixed mold; 2. Support; 21. Rotating mold; 22. Tensioning plate; 23. Trapezoidal groove; 24. Support seat; 25. First abutment surface; 3. Fixed shell; 31. Limiting tube; 32. Second abutment surface; 33. First spring; 4. Pull rod; 41. Trapezoidal block; 42. Rectangular block; 43. Protrusion; 5. Fixed plate; 51. Guide groove; 52. Top rod; 53. Second spring; 6. Vertical rod; 61. Lifting plate; 62. Inclined groove; 63. Long plate; 64. Abutment pin; 7. Hydraulic rod. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0022] Please refer to 1-7. An automatic mold-forming mechanism for shoe soles with a locking mechanism includes a base 1 and a support 2. A fixed mold 11 is fixedly mounted on the base 1, and a rotating mold 21 is fixedly mounted on the support 2. After the fixed mold 11 and the rotating mold 21 are closed, a forming mold cavity is formed. A support seat 24 is rotatably mounted on the support 2, and a fixed shell 3 is fixedly mounted on the base 1. The bottom of the support seat 24 is disposed inside the fixed shell 3. A first abutment surface 25 is provided on the support seat 24, and a second abutment surface 32 is provided on the fixed shell 3. 5. The first abutting surface 25 abuts against the second abutting surface 32; when the first abutting surface 25 abuts against the second abutting surface 32, the support base 24 is in a fixed state; when the first abutting surface 25 and the second abutting surface 32 disengage, the support base 24 is in a free state; it also includes a clamping assembly, which clamps the rotating mold 21 and the fixed mold 11 together after the rotating mold 21 rotates and merges with the fixed mold 11. By setting the first abutting surface 25 and the second abutting surface 32, when the rotating mold 21 rotates, the first abutting surface 25 and the second abutting surface 32 are engaged. 32 abuts against each other to ensure the stability of the rotating mold 21 during rotation. After the rotating mold 21 and the fixed mold 11 are closed, the first abutting surface 25 and the second abutting surface 32 disengage. Then, the clamping assembly clamps the rotating mold 21 and the fixed mold 11 together. Even if there is slight wear at the contact point between the rotating mold 21 and the fixed mold 11, the rotating mold 21 and the fixed mold 11 can still be made to fit together. The bracket 2 drives the support base 24 to move downward to compensate and prevent the rotational connection between the bracket 2 and the support base 24 from being lost. 2. This creates a limitation, affecting the fit between the rotating mold 21 and the fixed mold 11 after minor wear. At the same time, it avoids the phenomenon of flash on the molded shoe sole caused by minor wear at the fit position of the rotating mold 21 and the fixed mold 11, thus improving the pass rate. In addition, after the support seat 24 moves down and the first abutment surface 25 and the second abutment surface 32 disengage, the support seat 24 can move slightly in the circumferential direction, relieving stress and preventing the support seat 24 from moving down in a straight line due to wear between it and the bracket 2, which would cause deformation or wear.

[0023] Specifically, a first spring 33 is provided between the support base 24 and the fixed shell 3. A limit tube 31 is fixedly provided on the fixed shell 3. The limit tube 31 is located inside the first spring 33. The first spring 33 is used to provide a certain resistance to the downward movement of the support base 24 to ensure its stability during the downward movement. Furthermore, the first spring 33 is not connected to the support base 24. The limit tube 31 is used to limit the maximum downward sliding limit of the support base 24. Since the first spring 33 is not connected to the support base 24, the limit tube 31 is located inside the first spring 33 to limit the state of the first spring 33 and prevent the first spring 33 from tilting.

[0024] The clamping assembly includes a pull rod 4, a tension plate 22 fixedly mounted on the bracket 2, a trapezoidal groove 23 on the tension plate 22, and a trapezoidal block 41 fixedly mounted on the pull rod 4. The trapezoidal block 41 abuts against the trapezoidal groove 23. When the rotation mold 21 and the fixed mold 11 are offset due to wear between the bracket 2 and the support seat 24, and the pull rod 4 slides laterally with the trapezoidal block 41, the lateral position of the rotation mold 21 is corrected by the trapezoidal block 41 abutting against the corresponding tension plate 22. When the pull rod 4 and the trapezoidal block 41 move downward, the trapezoidal block 41 abuts against the trapezoidal groove 23. The longitudinal position of the rotation mold 21 is corrected by the abutment between the inclined surface on the trapezoidal block 41 and the inclined surface on the trapezoidal groove 23. After the trapezoidal block 41 and the trapezoidal groove 23 are fully abutted, the rotation mold 21 and the fixed mold 11 are clamped together.

[0025] Furthermore, a fixing plate 5 is fixedly installed on the base 1, and a guide groove 51 is provided on the fixing plate 5. A rectangular block 42 is fixedly installed on the pull rod 4, and the rectangular block 42 is slidably disposed in the guide groove 51. By allowing the rectangular block 42 to slide in the guide groove 51, the sliding of the pull rod 4 is guided. The guide groove 51 is L-shaped. A top rod 52 is slidably installed on the fixing plate 5, and the top rod 52 abuts against the rectangular block 42. A second spring 53 is provided between the fixing plate 5 and the top rod 52. The two ends of the second spring 53 are fixedly connected to the fixing plate 5 and the top rod 52, respectively. When the rectangular block 42 moves to the corner of the guide groove 51, it abuts against the top rod 52. 2. When the rectangular block 42 slides in the horizontal position of the guide groove 51, it simultaneously drives the pull rod 4 to move horizontally. The trapezoidal block 41 abuts against the corresponding tension plate 22. When moving vertically downward, the trapezoidal block 41 and the trapezoidal groove 23 abut against each other through the inclined surface, which corrects the longitudinal position of the rotating mold 21. After the trapezoidal block 41 abuts against the trapezoidal groove 23, the rotating mold 21 and the fixed mold 11 are tightened. When the rectangular block 42 slides horizontally, the second spring 53 and the top rod 52 make the rectangular block 42 move downward after it has completely slid to the corner position of the guide groove 51, so as to ensure the stability of the rectangular block 42 when passing the corner position of the guide groove 51.

[0026] Furthermore, a vertical rod 6 is slidably mounted on the base 1, and a lifting plate 61 is slidably mounted on the vertical rod 6. An inclined groove 62 is provided on the lifting plate 61, and a protrusion 43 is fixedly mounted on the pull rod 4. The protrusion 43 is slidably mounted in the inclined groove 62. When the lifting plate 61 descends, it drives the pull rod 4 to move through the cooperation of the inclined groove 62 and the protrusion 43. When the rectangular block 42 is in the horizontal position of the guide groove 51, the lifting plate 61 drives the pull rod 4 to slide horizontally through the cooperation of the inclined groove 62 and the protrusion 43. At this time, the protrusion 43 does not move down with the lifting plate 61, but slides in the inclined groove 62. After the rectangular block 42 slides to the corner of the guide groove 51, the protrusion 43 moves down with the lifting plate 61. Thus, the lifting plate 61 can be used to switch and drive the horizontal and vertical movement of the pull rod 4.

[0027] In a further embodiment of the present invention, a long plate 63 is fixedly mounted on the lifting plate 61, and an abutment pin 64 is fixedly mounted on the long plate 63. The abutment pin 64 abuts against the support seat 24. A hydraulic rod 7 is fixedly mounted on the base 1, and the telescopic end of the hydraulic rod 7 is fixedly connected to the long plate 63. During the molding process of the rotating mold 21 and the fixed mold 11, the abutment pin 64 moves downward as the long plate 63 moves downward, disengaging from the support seat 24, allowing the support seat 24 to move downward and move slightly in the circumferential direction. When the rotating mold 21 rotates, the abutment pin 64 abuts against the bottom surface of the support seat 24, and the first abutment surface 25 abuts against the second abutment surface 32, thereby completing the fixation of the support seat 24 and ensuring the stability of the rotating mold 21 during rotation. The hydraulic rod 7 is used to drive the long plate 63 to move up and down. The free state mentioned in the present invention refers to the state in which the support seat 24 can move downward and move slightly in the circumferential direction after the abutment pin 64 disengages from the support seat 24.

[0028] Working principle: During the sole molding process, the raw material is injected into the fixed mold 11, and the rotating mold 21 is rotated to close the mold. During the rotation of the rotating mold 21, the abutment pin 64 abuts against the bottom of the support base 24, and the first abutment surface 25 abuts against the second abutment surface 32. The support base 24 is in a fixed state, ensuring the stability of the bracket 2 and the rotating mold 21 during rotation. After the rotating mold 21 completes the rotation and mold closing, the hydraulic rod 7 is activated, the telescopic end retracts, and the long plate 63 is pulled down along with the abutment pin 64. 64 disengages from the support base 24. At the same time, the long plate 63 and the lifting plate 61 move down. Through the cooperation of the inclined groove 62 and the protrusion 43, the pull rods 4 on both sides slide laterally. The trapezoidal blocks 41 on both sides abut against the tension plate 22. The rectangular block 42 slides laterally at the corner of the guide groove 51. Then, the lifting plate 61 continues to move down, taking the pull rods 4 down with it. The trapezoidal blocks 41 of the pull rods 4 abut against the trapezoidal grooves 23 on the tension plate 22, and pulls the rotating mold 21 to close with the fixed mold 11. If wear between the bracket 2 and the support base 24 causes the rotating mold 21 and the fixed mold 11 to shift, the lateral position of the rotating mold 21 is corrected when the pull rods 4 slide laterally on both sides, causing the trapezoidal block 41 to abut against the corresponding tension plate 22; when the pull rods 4 move downward, the trapezoidal block 41 abuts against the trapezoidal groove 23, and the longitudinal position of the rotating mold 21 is corrected by the abutment between the inclined surface on the trapezoidal block 41 and the inclined surface on the trapezoidal groove 23, thereby avoiding the shift of the rotating mold 21 and the fixed mold 11 caused by wear between the bracket 2 and the support base 24. Even after prolonged use of the mold, when slight wear occurs at the contact point between the rotating mold 21 and the fixed mold 11, the pull rod 4 can still pull the rotating mold 21 downwards via the trapezoidal block 41, allowing the rotating mold 21 to remain in contact with the fixed mold 11. This prevents the finished shoe sole from developing burrs due to slight wear at the contact point between the rotating mold 21 and the fixed mold 11. Simultaneously, as the abutment pin 64 disengages from the bottom of the support seat 24, the bracket 2 will cause the support seat 24 to move slightly downwards during this process, slightly compressing the first spring 33. This avoids the rigid hinge point between the bracket 2 and the support seat 24, which would restrict the downward movement of the rotating mold 21. Furthermore, after the support seat 24 moves downwards, it can also move slightly and freely in a small circumferential direction, preventing the support seat 24 from being deformed by external pressure during downward movement due to wear between the bracket 2 and the support seat 24. This also prevents the wear between the support seat 24 and the bracket 2 from becoming more severe.

[0029] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An automatic shoe sole molding mechanism with a locking mechanism, comprising a base (1) and a support (2), characterized in that, A fixed mold (11) is fixedly installed on the base (1), and a rotating mold (21) is fixedly installed on the bracket (2). After the fixed mold (11) and the rotating mold (21) are closed, a molding cavity is formed. A support base (24) is rotatably mounted on the bracket (2), and a fixed shell (3) is fixedly mounted on the base (1). The bottom of the support base (24) is located inside the fixed shell (3). A first abutting surface (25) is provided on the support base (24), and a second abutting surface (32) is provided on the fixed shell (3). The first abutting surface (25) and the second abutting surface (32) abut against each other. When the first abutting surface (25) abuts against the second abutting surface (32), the support base (24) is in a fixed state; when the first abutting surface (25) and the second abutting surface (32) disengage, the support base (24) is in a free state. It also includes a clamping assembly, which clamps the rotating mold (21) and the fixed mold (11) together after the rotating mold (21) rotates and merges with the fixed mold (11).

2. An automatic molding mechanism for shoe sole with locking mechanism according to claim 1, characterized in that, A first spring (33) is provided between the support base (24) and the fixed shell (3), and a limit tube (31) is fixedly provided on the fixed shell (3), with the limit tube (31) located inside the first spring (33).

3. The automatic molding mechanism for shoe sole with locking mechanism according to claim 1, characterized in that, The clamping assembly includes a pull rod (4), a tensioning plate (22) is fixedly installed on the bracket (2), a trapezoidal groove (23) is provided on the tensioning plate (22), and a trapezoidal block (41) is fixedly installed on the pull rod (4). The trapezoidal block (41) abuts against the trapezoidal groove (23).

4. The automatic shoe sole molding mechanism with a locking mechanism according to claim 3, characterized in that, A fixing plate (5) is fixedly installed on the fixing shell (3), and a guide groove (51) is provided on the fixing plate (5). A rectangular block (42) is fixedly installed on the pull rod (4), and the rectangular block (42) is slidably installed in the guide groove (51).

5. The automatic shoe sole molding mechanism with a locking mechanism according to claim 4, characterized in that, A top rod (52) is slidably disposed on the fixed plate (5), and the top rod (52) abuts against the rectangular block (42); A second spring (53) is provided between the fixing plate (5) and the top rod (52), and the two ends of the second spring (53) are fixedly connected to the fixing plate (5) and the top rod (52) respectively.

6. The automatic shoe sole molding mechanism with a locking mechanism according to claim 4, characterized in that, A vertical rod (6) is slidably mounted on the base (1), a lifting plate (61) is slidably mounted on the vertical rod (6), an inclined groove (62) is provided on the lifting plate (61), and a protrusion (43) is fixedly mounted on the pull rod (4). The protrusion (43) is slidably mounted in the inclined groove (62).

7. The automatic shoe sole molding mechanism with a locking mechanism according to claim 6, characterized in that, A long plate (63) is fixedly installed on the lifting plate (61), and an abutment pin (64) is fixedly installed on the long plate (63). The abutment pin (64) abuts against the support base (24).

8. The automatic shoe sole molding mechanism with a locking mechanism according to claim 7, characterized in that, A hydraulic rod (7) is fixedly installed on the base (1), and the telescopic end of the hydraulic rod (7) is fixedly connected to the long plate (63).

9. The automatic shoe sole molding mechanism with a locking mechanism according to claim 5, characterized in that, The guide groove (51) is L-shaped. When the rectangular block (42) moves to the corner of the guide groove (51), it abuts against the top rod (52).

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