A cold and heat setting machine for 3D shoe mold clamps

Abstract

This utility model relates to the technical field of three-dimensional curved surface shaping machine for shoe mold fixtures used in computer pattern making machines, specifically to a hot and cold shaping machine for 3D shoe mold fixtures. It employs a frame, and a hot-baking softening mechanism, a hot-pressing forming mechanism, and a cold-pressing shaping mechanism, all mounted on the frame. During actual processing, the hot-baking softening mechanism softens the flat shoe mold fixture, preventing direct hot pressing that could cause breakage. The hot-pressing forming mechanism then further heat-presses and bends the softened flat shoe mold fixture. Finally, the cold-pressing shaping mechanism further cold-presses and shapes the hot-pressed and bent flat shoe mold fixture. Cold pressing prevents deformation of the flat shoe mold fixture due to residual heat, thus facilitating the cold-pressing shaping of the flat shoe mold fixture into a 3D curved surface shoe mold fixture.

Description

Technical Field

[0001] This utility model relates to the technical field of three-dimensional curved surface shaping machine for shoe mold clamps used in computer pattern making machines, and specifically to a cold and hot shaping machine for 3D shoe mold clamps. Background Technology

[0002] 3D computer pattern sewing machines, including cylindrical pattern sewing machines, have a cylindrical drive structure and are high-end sewing equipment that integrates computer control, precision mechanics and automation technology. They are designed specifically for sewing three-dimensional curved surfaces. When in use, the cylinder is driven to rotate at a certain angle to sew three-dimensional fabrics such as the curved surfaces of shoe heels.

[0003] Existing cylindrical pattern making machines use curved clamps to hold and shape the fabric to be sewn, then place the curved clamps onto the machine's tray for sewing. Shoe mold clamps are typically made of epoxy fiberglass board, but the existing curved clamps are difficult to manufacture, and current technology lacks a device for bending flat shoe mold clamps to obtain 3D curved shoe mold clamps. Summary of the Invention

[0004] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a cold and hot setting machine for 3D shoe mold clamps.

[0005] The objective of this utility model is achieved through the following technical solution: a hot and cold setting machine for a 3D shoe mold clamp, comprising a frame, and a hot baking softening mechanism, a hot pressing forming mechanism, and a cold pressing setting mechanism, all disposed on the frame. The hot baking softening mechanism is used to heat-bake and soften the planar shoe mold clamp, the hot pressing forming mechanism is used to further heat-press and bend the heat-softened planar shoe mold clamp, and the cold pressing setting mechanism is used to further cold-press and set the heat-pressed and bent planar shoe mold clamp.

[0006] Preferably, the heat-drying softening mechanism includes an oven fixedly disposed in the middle of the frame, a tray slidably disposed in the oven, a heat insulation curtain fixedly connected to the front end of the oven, a reflector fixedly connected to the top of the oven, and an electric heating tube fixedly connected to the reflector. The front end of the oven is provided with an opening for the tray to enter and exit the oven, and the heat insulation curtain is used to cover the opening.

[0007] Preferably, guide rails are fixedly connected to both sides of the oven, and the tray is slidably arranged along the guide rails; a limiting bolt extending into the inner cavity of the tray is fixedly connected to one end of the guide rail near the oven opening, and the limiting bolt is used to limit the sliding distance of the tray; a breathable mesh is opened on the bottom surface of the tray; and a handle is fixedly connected to the front end of the tray.

[0008] Preferably, a partition is fixedly connected to the rear side of the oven, and a ventilated rack is fixedly connected to the bottom side of the oven. A first flow space is formed between the rear side of the oven, the partition, and the ventilated rack. A second flow space is formed between the bottom surface of the oven and the partition. A third flow space is formed between the top surface of the oven, the partition, and the ventilated rack. The first, second, and third flow spaces are sequentially connected. The heat-drying softening mechanism also includes a motor fixedly connected to the rear end of the oven and a fan wheel housed in the first flow space. The output end of the motor passes through the oven and is fixedly connected to the fan wheel.

[0009] Preferably, the hot pressing forming mechanism includes a first top plate connected to the frame, a first middle plate connected to the frame, a first lifting drive cylinder connected to the bottom of the first top plate, a transfer seat fixedly connected to the output end of the first lifting drive cylinder, a hot pressing upper mold connected to the bottom of the transfer seat, and a hot pressing lower mold connected to the top of the first middle plate. The hot pressing upper mold is semi-cylindrical in shape with its curved surface facing the hot pressing lower mold. The hot pressing lower mold has a first semi-cylindrical groove. The hot pressing upper mold and the hot pressing lower mold cooperate to further hot press and bend the softened flat shoe mold fixture.

[0010] Preferably, the upper hot-pressing die has a plurality of first insert through holes spaced apart along its curved surface, and a first electric heating rod is inserted into the first insert through hole; the lower hot-pressing die has a plurality of second insert through holes spaced apart along the curved surface of the first semi-cylindrical groove, and a second electric heating rod is inserted into the second insert through hole.

[0011] Preferably, a first heat insulation pad is fixedly clamped between the adapter seat and the upper hot-pressing mold, and a second heat insulation pad is fixedly clamped between the lower hot-pressing mold and the base plate; two mutually symmetrical auxiliary alignment plates are fixedly connected to the left and right side walls of the lower hot-pressing mold, and the top surface of the auxiliary alignment plates is flush with the top surface of the lower hot-pressing mold.

[0012] Preferably, the cold pressing and shaping mechanism includes a second middle plate connected to the frame, a second top plate connected to the frame, a second lifting drive cylinder connected to the second top plate, a cold pressing lower die connected to the second middle plate, a transfer plate fixedly connected to the output end of the second lifting drive cylinder, a clamping die drive assembly fixedly connected to the transfer plate, and a cold pressing upper die movably connected to the clamping die drive assembly. The clamping die drive assembly is used to clamp the cold pressing upper die. The cold pressing lower die has a second semi-cylindrical groove. The bottom surface of the cold pressing upper die is an arc-shaped curved surface. The cold pressing upper die and the cold pressing lower die cooperate to further cold press and shape the hot-pressed and bent planar shoe mold fixture.

[0013] Preferably, the upper cold-pressing die has a receiving hole along its central axis, and the receiving hole houses a cooling pipe for passing refrigerant. The cooling pipe includes a refrigerant inlet section, a spiral heat exchange section, and a refrigerant outlet section, all of which are housed in the receiving hole and connected in sequence. The inlet of the refrigerant inlet section and the outlet of the refrigerant outlet section are both located at the rear end of the upper cold-pressing die.

[0014] Preferably, the clamping mold driving assembly includes a support plate fixedly connected to the adapter plate, a first guide assembly connected to the four corners of the support plate and fixed to the second middle plate, a second guide assembly connected to the front and rear ends of the support plate and fixed to the cold pressing upper mold, two telescopic driving cylinders fixedly connected to the bottom of the left and right ends of the support plate, and two clamping blocks fixedly connected to the output ends of the telescopic driving cylinders. The side of the clamping block near the cold pressing upper mold has an arc surface for tightly fitting with the cold pressing upper mold, and the two clamping blocks cooperate to clamp the cold pressing upper mold.

[0015] The beneficial effects of this utility model are as follows: The 3D shoe mold fixture hot and cold setting machine of this utility model adopts a frame and a hot baking softening mechanism, a hot pressing forming mechanism and a cold pressing setting mechanism, all of which are set on the frame. In actual processing, the hot baking softening mechanism is used to heat and soften the flat shoe mold fixture, avoiding the direct hot pressing of the flat shoe mold fixture which would cause it to break. Then, the hot pressing forming mechanism is used to further heat press and bend the softened flat shoe mold fixture. Finally, the cold pressing setting mechanism is used to further cold press and set the hot-pressed and bent flat shoe mold fixture. Cold pressing avoids deformation of the flat shoe mold fixture due to residual heat, which is conducive to obtaining a 3D curved surface shoe mold fixture by cold pressing and setting the flat shoe mold fixture. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the heat-drying softening mechanism described in this utility model;

[0018] Figure 3 This is a partial structural schematic diagram of the heat-drying softening mechanism described in this utility model;

[0019] Figure 4 This is a cross-sectional view of the heat-drying softening mechanism described in this utility model;

[0020] Figure 5 This is a schematic diagram of the hot pressing forming mechanism described in this utility model;

[0021] Figure 6 This is an exploded view of the hot pressing forming mechanism described in this utility model;

[0022] Figure 7 This is a schematic diagram of the cold pressing and shaping mechanism described in this utility model;

[0023] Figure 8 This is an exploded view of the cold pressing and shaping mechanism described in this utility model.

[0024] The attached figures are labeled as follows: 1. Frame; 2. Box opening; 3. Hot drying and softening mechanism; 31. Oven; 32. Tray; 33. Heat insulation curtain; 34. Reflector; 35. Heating element; 36. Motor; 37. Fan wheel; 4. Hot pressing forming mechanism; 41. First top plate; 42. First middle plate; 43. First lifting drive cylinder; 44. Adapter seat; 45. Hot pressing upper mold; 46. Hot pressing lower mold; 5. Cold pressing shaping mechanism; 51. Second middle plate; 52. Second top plate; 53. Second lifting drive cylinder; 54. Cold pressing lower mold; 55. Adapter plate; 56. Clamping mold drive assembly; 561. Support plate; 562. First guide assembly; 5621. First linear bearing; 5622. First guide post; 5623. First buffer spring; 563. Second guide assembly; 564. 1. Second linear bearing; 5632. Second guide post; 5633. Second buffer spring; 564. Telescopic drive cylinder; 565. Clamping block; 57. Cold pressing upper mold; 6. Guide rail; 7. Limiting bolt; 8. Ventilation mesh; 9. Handle; 10. Partition plate; 11. Ventilation frame plate; 12. First flow space; 13. Second flow space; 14. Third flow space; 15. First semi-cylindrical groove; 16. First embedded through hole; 17. First electric heating rod; 18. Second embedded through hole; 19. Second electric heating rod; 20. First heat insulation pad; 21. Second heat insulation pad; 22. Auxiliary alignment plate; 23. Second semi-cylindrical groove; 24. Accommodation hole; 25. Cooling pipe; 251. Refrigerant inlet; 252. Spiral heat exchanger; 253. Refrigerant outlet. Detailed Implementation

[0025] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0026] like Figure 1-8 As shown, a hot and cold setting machine for a 3D shoe mold fixture includes a frame 1, and a hot baking softening mechanism 3, a hot pressing forming mechanism 4, and a cold pressing setting mechanism 5, all disposed on the frame 1. The hot baking softening mechanism 3 is used to heat-bake and soften the flat shoe mold fixture, the hot pressing forming mechanism 4 is used to further heat-press and bend the heat-softened flat shoe mold fixture, and the cold pressing setting mechanism 5 is used to further cold-press and set the heat-pressed and bent flat shoe mold fixture.

[0027] In actual processing, the hot-baking softening mechanism 3 is used to soften the flat shoe mold fixture by hot-baking, avoiding the flat shoe mold fixture from breaking due to direct hot pressing. Then, the hot-pressing forming mechanism 4 is used to further hot-press and bend the softened flat shoe mold fixture. Finally, the cold-pressing shaping mechanism 5 is used to further cold-press and shape the hot-pressed and bent flat shoe mold fixture. Cold pressing avoids deformation of the flat shoe mold fixture due to residual heat, which is conducive to obtaining a 3D curved surface shoe mold fixture by cold pressing and shaping.

[0028] Furthermore, the heat-curing softening mechanism 3 includes an oven 31 fixedly disposed in the middle of the frame 1, a tray 32 slidably disposed in the oven 31, a heat insulation curtain 33 fixedly connected to the front end of the oven 31, a reflector 34 fixedly connected to the top of the oven 31, and an electric heating tube 35 fixedly connected to the reflector 34. The front end of the oven 31 has an opening 2 for the tray 32 to enter and exit the oven 31, and the heat insulation curtain 33 is used to cover the opening 2. When the flat shoe mold clamp needs to be heat-cured, the flat shoe mold clamp is placed on the tray 32 and then the tray 32 is pushed into the oven 31. The electric heating tube 35 is used to heat up the inside of the oven 31 to heat-cure the flat shoe mold clamp. The heat insulation curtain 33 helps to block most of the heat from escaping from the opening 2.

[0029] Furthermore, guide rails 6 are fixedly connected to both sides of the oven 31, and the tray 32 is slidably arranged along the guide rails 6; a limiting bolt 7 extending into the inner cavity of the tray 32 is fixedly connected to one end of the guide rail 6 near the oven opening 2, and the limiting bolt 7 is used to limit the sliding distance of the tray 32; a ventilation mesh 8 is opened on the bottom surface of the tray 32; and a handle 9 is fixedly connected to the front end of the tray 32. When the tray 32 is pulled out, the limiting bolt 7 abuts against the end of the inner cavity of the tray 32 to limit the sliding distance of the tray 32 and prevent the tray 32 from being completely pulled out of the oven 31 and accidentally falling and injuring the operator due to the high temperature of the tray 32.

[0030] Furthermore, a partition 10 is fixedly connected to the rear side of the interior of the oven 31, and a ventilated frame plate 11 is fixedly connected to the bottom side of the interior of the oven 31. A first circulation space 12 is formed between the rear side of the oven 31, the partition 10, and the ventilated frame plate 11. A second circulation space 13 is formed between the bottom surface of the oven 31 and the partition 10. A third circulation space 14 is formed between the top surface of the oven 31, the partition 10, and the ventilated frame plate 11. The first circulation space 12, the second circulation space 13, and the third circulation space 14 are sequentially connected. The heat-drying softening mechanism 3 also includes a motor 36 fixedly connected to the rear end of the oven 31 and a fan wheel 37 housed in the first circulation space 12. The output end of the motor 36 passes through the oven 31 and is fixedly connected to the fan wheel 37. The motor 36 drives the fan wheel 37 to rotate, which is beneficial for the flat shoe mold clamps in the oven 31 to be heated evenly.

[0031] Furthermore, the hot pressing forming mechanism 4 includes a first top plate 41 connected to the frame 1, a first middle plate 42 connected to the frame 1, a first lifting drive cylinder 43 connected to the bottom of the first top plate 41, a transfer seat 44 fixedly connected to the output end of the first lifting drive cylinder 43, a hot pressing upper mold 45 connected to the bottom of the transfer seat 44, and a hot pressing lower mold 46 connected to the top of the first middle plate 42. The hot pressing upper mold 45 is semi-cylindrical in shape and its curved surface faces the hot pressing lower mold 46. The hot pressing lower mold 46 has a first semi-cylindrical groove 15. The hot pressing upper mold 45 and the hot pressing lower mold 46 cooperate to further hot press and bend the softened flat shoe mold fixture. In use, the heat-softened flat shoe mold fixture is transferred to the first semi-cylindrical groove 15 of the hot-pressing lower mold 46, and the lower first lifting drive cylinder 43 drives the hot-pressing upper mold 45 to press down. The hot-pressing upper mold 45 and the hot-pressing lower mold 46 cooperate with the hot-pressing flat shoe mold fixture to further bend and shape the flat shoe mold fixture.

[0032] Furthermore, the upper hot-pressing mold 45 has a plurality of first insert through holes 16 spaced apart along its curved surface, and a first electric heating rod 17 is inserted into the first insert through holes 16; the lower hot-pressing mold 46 has a plurality of second insert through holes 18 spaced apart along the curved surface of the first semi-cylindrical groove 15, and a second electric heating rod 19 is inserted into the second insert through holes 18. The upper hot-pressing mold 45 is heated by the first electric heating rod 17, and the lower hot-pressing mold 46 is heated by the second electric heating rod 19. In this embodiment, there are 3 first insert through holes 16, which are evenly distributed along the curved surface of the upper hot-pressing mold 45; there are 4 second insert through holes 18, which are symmetrically distributed in pairs along the curved surface of the semi-cylindrical groove.

[0033] Furthermore, a first heat-insulating pad 20 is fixedly clamped between the adapter 44 and the upper hot-pressing mold 45, and a second heat-insulating pad 21 is fixedly clamped between the lower hot-pressing mold 46 and the base plate. Two mutually symmetrical auxiliary alignment plates 22 are fixedly connected to the left and right side walls of the lower hot-pressing mold 46, with the top surface of the auxiliary alignment plates 22 flush with the top surface of the lower hot-pressing mold 46. The first heat-insulating pad 20 helps prevent the adapter 44 and the upper hot-pressing mold 45 from directly contacting the adapter 44 with a large area, thus avoiding heat loss. The second heat-insulating pad 21 helps prevent the lower hot-pressing mold 46 and the base plate from directly contacting the base plate with a large area, thus avoiding heat loss. Additionally, since the flat shoe mold fixture is difficult to align on the semi-cylindrical groove of the lower hot-pressing mold 46 after thermal softening, the two auxiliary alignment plates 22 facilitate appropriate adjustment of the two sides of the flat shoe mold fixture on the two auxiliary alignment plates 22.

[0034] Furthermore, the cold pressing and shaping mechanism 5 includes a second middle plate 51 connected to the frame 1, a second top plate 52 connected to the frame 1, a second lifting drive cylinder 53 connected to the second top plate 52, a cold pressing lower die 54 connected to the second middle plate 51, a transition plate 55 fixedly connected to the output end of the second lifting drive cylinder 53, a clamping die drive assembly 56 fixedly connected to the transition plate 55, and a cold pressing upper die 57 limitedly connected to the clamping die drive assembly 56. The clamping die drive assembly 56 is used to clamp the cold pressing upper die 57. The cold pressing lower die 54 has a second semi-cylindrical groove 23. The bottom surface of the cold pressing upper die 57 is an arc-shaped curved surface. The cold pressing upper die 57 and the cold pressing lower die 54 cooperate to further cold press and shape the hot-pressed and bent planar shoe mold fixture. In use, the hot-pressed and bent flat shoe mold fixture is transferred to the second semi-cylindrical groove 23 of the cold-pressing lower mold 54. The second lifting drive cylinder 53 drives the adapter plate 55, the clamping mold drive assembly 56 and the cold-pressing upper mold 57 to press down, and releases the clamping mold drive assembly 56 from the state of clamping the cold-pressing upper mold 57. The cold-pressing upper mold 57 and the cold-pressing lower mold 54 cooperate to cold-press the flat shoe mold fixture. Cold pressing avoids deformation of the flat shoe mold fixture due to residual heat, which is conducive to the cold pressing and shaping of the flat shoe mold fixture to obtain a 3D curved surface shoe mold fixture.

[0035] Furthermore, the cold-pressing upper mold 57 has a receiving hole 24 along its central axis. The receiving hole 24 accommodates a cooling pipe 25 for passing refrigerant. The cooling pipe 25 includes a refrigerant inlet section 251, a spiral heat exchange section 252, and a refrigerant outlet section 253, all housed within the receiving hole 24 and connected in sequence. The inlet of the refrigerant inlet section 251 and the outlet of the refrigerant outlet section 253 are both located at the rear end of the cold-pressing upper mold 57. In actual processing, the existing refrigeration system is used to connect the cooling pipe 25. The refrigeration system introduces refrigerant into the cooling pipe 25, and the refrigerant heats the cooling pipe 25 and the cold-pressing upper mold 57, causing the cold-pressing upper mold 57 to cool down. This allows the flat shoe mold fixture to cool down more quickly when the cold-pressing upper mold 57 is pressing the flat shoe mold fixture. Moreover, the spiral heat exchange section 252 of the cooling pipe 25 helps to improve the heat exchange effect. The refrigeration system is existing technology and is only used as an application here.

[0036] Furthermore, the clamping mold driving assembly 56 includes a support plate 561 fixedly connected to the adapter plate 55, a first guide assembly 562 connected to the four corners of the support plate 561 and fixed to the second middle plate 51, a second guide assembly 563 connected to the front and rear ends of the support plate 561 and fixed to the cold pressing upper mold 57, two telescopic driving cylinders 564 fixedly connected to the bottom of the left and right ends of the support plate 561, and two clamping blocks 565 fixedly connected to the output ends of the telescopic driving cylinders 564. The clamping block 565 has an arc surface on the side near the cold pressing upper mold 57 for tightly fitting with the cold pressing upper mold 57. The two clamping blocks 565 cooperate to clamp the cold pressing upper mold 57. When it is necessary to lift the upper cold-pressing mold 57, the second lifting drive cylinder 53 drives the clamping mold drive assembly 56 to move downward. Two telescopic drive cylinders 564 then drive the clamping blocks 565 to clamp the upper cold-pressing mold 57. The second lifting drive cylinder 53 then drives the clamping mold drive assembly 56 to move upward, causing the upper cold-pressing mold 57 to rise. When it is necessary to cold-press a flat shoe mold fixture, the second lifting drive cylinder 53 drives the clamping mold drive assembly 56 to move downward. Simultaneously, the two telescopic drive cylinders 564 drive the two clamping blocks 565 to release the clamping state of the upper cold-pressing mold 57. Since there are many types of flat shoe mold fixtures, with varying widths and thicknesses, using the upper cold-pressing mold 57's own weight to cold-press the flat shoe mold fixture helps avoid damage to the flat shoe mold fixture caused by the second lifting drive cylinder 53 directly driving the upper cold-pressing mold 57 downward. This facilitates the processing of various flat shoe mold fixtures with different sizes and thicknesses.

[0037] Furthermore, the first guide assembly 562 includes four first linear bearings 5621 fixedly connected to the four corners of the support plate 561, and four first guide posts 5622 slidably connected to the first linear bearings 5621 and fixed to the second middle plate 51; the second guide assembly 563 includes two second linear bearings 5631 fixedly connected to the front and rear ends of the support plate 561, and two second guide posts 5632 slidably connected to the second linear bearings 5631 and fixed to the cold pressing upper mold 57; the first linear bearings 5621 and the first guide posts 5622 are used in combination, and the second linear bearings 5631 and the second guide posts 5632 are used in combination, which helps to improve the stability of the support plate 561 and the cold pressing upper mold 57 during the lifting process.

[0038] Furthermore, the first guide assembly 562 also includes a first buffer spring 5623 sleeved on the first guide post 5622 and clamped between the first linear bearing 5621 and the second middle plate 51; the second guide assembly 563 also includes a second buffer spring 5633 sleeved on the second guide post 5632 and clamped between the second linear bearing 5631 and the cold pressing upper mold 57; this helps to prevent the support plate 561 from directly pressing against the cold pressing lower mold 54 when the second lifting drive cylinder 53 drives the support plate 561 to press down, thus avoiding damage to the planar shoe mold fixture.

[0039] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this utility model are within the protection scope of this utility model.

Claims

1. A hot and cold setting machine for a 3D shoe mold clamp, characterized in that: The device includes a frame, and a hot-baking softening mechanism, a hot-pressing forming mechanism, and a cold-pressing shaping mechanism, all mounted on the frame. The hot-baking softening mechanism is used to heat-bake and soften the flat shoe mold fixture. The hot-pressing forming mechanism is used to further heat-press and bend the heat-softened flat shoe mold fixture. The cold-pressing shaping mechanism is used to further cold-press and shape the heat-pressed and bent flat shoe mold fixture.

2. The cold and heat setting machine for a 3D shoe mold fixture according to claim 1, characterized in that: The heat-drying softening mechanism includes an oven fixedly installed in the middle of the frame, a tray slidably installed in the oven, a heat insulation curtain fixedly connected to the front end of the oven, a reflector fixedly connected to the top of the oven, and an electric heating tube fixedly connected to the reflector. The front end of the oven has an opening for the tray to enter and exit the oven, and the heat insulation curtain is used to cover the opening.

3. The cold and heat setting machine for a 3D shoe mold fixture according to claim 2, characterized in that: The oven has guide rails fixedly connected to both sides, and the tray slides along the guide rails; a limiting bolt is fixedly connected to one end of the guide rail near the oven opening, which extends into the inner cavity of the tray and is used to limit the sliding distance of the tray; the bottom surface of the tray has ventilation mesh holes; and a handle is fixedly connected to the front end of the tray.

4. The hot and cold setting machine for a 3D shoe mold fixture according to claim 2, characterized in that: A partition is fixedly connected to the rear side of the oven, and a ventilated frame is fixedly connected to the bottom side of the oven. A first flow space is formed between the rear side of the oven, the partition, and the ventilated frame. A second flow space is formed between the bottom surface of the oven and the partition. A third flow space is formed between the top surface of the oven, the partition, and the ventilated frame. The first, second, and third flow spaces are sequentially connected. The heat-drying softening mechanism also includes a motor fixedly connected to the rear end of the oven and a fan wheel housed in the first flow space. The output end of the motor passes through the oven and is fixedly connected to the fan wheel.

5. A hot and cold setting machine for a 3D shoe mold clamp according to claim 1, characterized in that: The hot pressing forming mechanism includes a first top plate connected to the frame, a first middle plate connected to the frame, a first lifting drive cylinder connected to the bottom of the first top plate, a transfer seat fixedly connected to the output end of the first lifting drive cylinder, a hot pressing upper mold connected to the bottom of the transfer seat, and a hot pressing lower mold connected to the top of the first middle plate. The hot pressing upper mold is semi-cylindrical in shape with its curved surface facing the hot pressing lower mold. The hot pressing lower mold has a first semi-cylindrical groove. The hot pressing upper mold and the hot pressing lower mold cooperate to further hot press and bend the softened flat shoe mold fixture.

6. The cold and heat setting machine for a 3D shoe mold clamp according to claim 5, characterized in that: The upper hot-pressing die has a plurality of first insert through holes spaced apart along its curved surface, and a first electric heating rod is inserted into the first insert through hole; the lower hot-pressing die has a plurality of second insert through holes spaced apart along the curved surface of the first semi-cylindrical groove, and a second electric heating rod is inserted into the second insert through hole.

7. A hot and cold setting machine for a 3D shoe mold clamp according to claim 5, characterized in that: A first heat insulation pad is fixedly clamped between the adapter seat and the upper hot pressing mold, and a second heat insulation pad is fixedly clamped between the lower hot pressing mold and the base plate; two mutually symmetrical auxiliary alignment plates are fixedly connected to the left and right side walls of the lower hot pressing mold, and the top surface of the auxiliary alignment plates is flush with the top surface of the lower hot pressing mold.

8. The cold and heat setting machine for a 3D shoe mold clamp according to claim 1, characterized in that: The cold pressing and shaping mechanism includes a second middle plate connected to the frame, a second top plate connected to the frame, a second lifting drive cylinder connected to the second top plate, a cold pressing lower die connected to the second middle plate, a transfer plate fixedly connected to the output end of the second lifting drive cylinder, a clamping die drive assembly fixedly connected to the transfer plate, and a cold pressing upper die movably connected to the clamping die drive assembly. The clamping die drive assembly is used to clamp the cold pressing upper die. The cold pressing lower die has a second semi-cylindrical groove. The bottom surface of the cold pressing upper die is an arc-shaped curved surface. The cold pressing upper die and the cold pressing lower die cooperate to further cold press and shape the hot-pressed and bent planar shoe mold fixture.

9. A hot and cold setting machine for a 3D shoe mold clamp according to claim 8, characterized in that: The upper cold-pressing die has a receiving hole along its central axis. The receiving hole houses a cooling pipe for passing refrigerant. The cooling pipe includes a refrigerant inlet section, a spiral heat exchange section, and a refrigerant outlet section, all of which are housed in the receiving hole and connected in sequence. The inlet of the refrigerant inlet section and the outlet of the refrigerant outlet section are both located at the rear end of the upper cold-pressing die.

10. A hot and cold setting machine for a 3D shoe mold clamp according to claim 8, characterized in that: The clamping drive assembly includes a support plate fixedly connected to the adapter plate, a first guide assembly connected to the four corners of the support plate and fixed to the second middle plate, a second guide assembly connected to the front and rear ends of the support plate and fixed to the cold pressing upper mold, two telescopic drive cylinders fixedly connected to the bottom of the left and right ends of the support plate, and two clamping blocks fixedly connected to the output ends of the telescopic drive cylinders. The side of the clamping block near the cold pressing upper mold has an arc surface for tightly fitting with the cold pressing upper mold. The two clamping blocks work together to clamp the cold pressing upper mold.

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