Shoe tree hot press mold

Abstract

The utility model provides a kind of shoe last hot-pressing mould, including die holder and forming cavity, its innovation point is that die holder one end is equipped with the lifting unit distributed in the side of forming cavity.The unit makes the uncoated side higher than the coated side by physical interference, and the uncoated side is forced to bend and fold to form the inner layer matrix in the process of hot pressing;After continuous pressure, the coated side lags behind and bends and accurately covers the outside of the inner layer matrix, realizes the complete adhesion of glue surface.This phased bending mechanism solves the misplacement problem of glue layer caused by synchronous folding, significantly improves the rear end connection strength of shoe last and the pass rate of finished product.

Description

Technical Field

[0001] This utility model specifically relates to a hot pressing mold for shoe trees. Background Technology

[0002] Before thermoforming, paper shoe trees typically have adhesive applied to one side of the end to ensure a secure connection at the rear. During thermoforming, the adhesive side adheres to the outside of the un-adhesive side, and the adhesive binds the two sides tightly together, completing the shoe tree. This process requires addressing the technical challenge of ensuring the adhesive side bends later than the un-adhesive side. Existing thermoforming mechanisms for shoe trees cannot solve this problem. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a shoe support hot pressing mold to address the shortcomings of the prior art. By setting lifting units distributed on the side of the forming cavity at one end of the mold base, the problem of controlling the bending and folding sequence of the glued and unglue-coated surfaces is solved.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a shoe support hot pressing mold, comprising a mold base and a forming cavity disposed on the mold base, characterized in that: one end of the mold base is provided with lifting units distributed on the side of the forming cavity.

[0005] Using the above technical solution, after the shoe tree blank is placed into the molding cavity, the lifting unit physically interferes with the uncoated side, making it higher than the coated side. During the downward pressure of the shoe last, the uncoated side is forced to bend and fold before the coated side. Only during continuous pressure application does the coated side bend later under the pressure of the shoe last. At this point, the coated surface precisely covers the outside of the shaped uncoated surface, ensuring successful bonding between the coated and uncoated surfaces of the produced shoe tree and improving the overall structural strength of the shoe tree. This "staged bending" method ensures precise positioning of the adhesive bonding (the coated surface is always on the outer layer) and avoids misalignment or bonding failure caused by simultaneous folding of both sides, significantly improving the structural strength of the shoe tree's rear connection and the finished product qualification rate.

[0006] The aforementioned shoe support hot pressing mold can be further configured such that: the mold base is provided with support surfaces respectively placed on both sides of the forming cavity; the lifting unit includes at least one set of support members; the support members are placed on a set of support surfaces and located at the ends of the support surfaces; and the upper end of the support members is higher than the support surfaces.

[0007] Using the above technical solution, when the shoe tree blank is placed into the molding cavity, the un-glued side first contacts the upper pressure plate of the mold due to the lifting effect of the support component. Under pressure, it bends and folds before the glued side. As the pressure continues to increase, the glued side bends later and adheres to the outside of the un-glued side. The support component forcibly separates the bending and folding sequence of the two sides through the physical height difference, which not only avoids misalignment of the glue layer caused by premature bending of the glued side, but also ensures that the glued side completely covers the un-glued side, so that the glue bonding position is precisely matched. The end connection design between the support component and the support surface not only ensures the stability of the lifting force (preventing the displacement of the support component), but also avoids interference with the molding structure of other areas through local lifting.

[0008] The aforementioned shoe support hot pressing mold can be further configured such that: the mold base has a connecting hole corresponding to the support member, and the axial portion of the support member is inserted into the connecting hole.

[0009] Using the above technical solution, the support component forms a rigid connection through axial insertion into the connecting hole, ensuring zero displacement of its vertical height and horizontal position during hot pressing. This prevents the support component from tilting or sinking due to pressure, thus ensuring that the uncoated side always bends and folds before the coated side. The "connecting hole" allows for quick disassembly and replacement of the support component. By replacing support components of different heights or changing the depth of insertion into the connecting hole, the lifting height of the support component (i.e., the height difference between the upper end of the support component and the support surface) can be changed, adapting to shoe tree blanks of different thicknesses or adjusting the speed of bending and folding actions to meet diverse production needs.

[0010] The aforementioned shoe support hot pressing mold can be further configured such that: the support member is a screw or bolt, and the inner circumference of the connecting hole is provided with a threaded hole that engages with the screw or bolt thread.

[0011] Using the above technical solution, the threaded structure of the "screw / bolt" allows for fine-tuning of the support height by rotation, adjusting the lifting range of the un-glued side to accommodate different specifications and types of shoe tree blanks, ensuring that the un-glued side always bends and folds before the glued side. The screws and bolts are standard parts, offering good interchangeability and facilitating maintenance and replacement.

[0012] The aforementioned shoe support hot pressing mold can be further configured such that the support member is a cylindrical rod.

[0013] Using the above technical solution, the cylindrical rod can achieve the function of "the uncoated side always bending and folding before the coated side".

[0014] The aforementioned shoe support hot pressing mold can be further configured such that the support member is integrally formed with the mold base or the support member is welded onto the mold base.

[0015] Using the above technical solutions, either integral molding or welding can be used to fix the support to the mold base, thereby achieving the function of "the uncoated side always bending and folding before the coated side".

[0016] The aforementioned shoe support hot pressing mold can be further configured such that: the lifting unit includes a lifting surface, the lifting surface is distributed on one side of the forming cavity and placed at the end of the mold base, and the other side of the forming cavity is provided with a support surface arranged opposite to the lifting surface, the center point of the lifting surface is higher than the center point of the support surface.

[0017] Using the above technical solution, one side of the shoe support blank is in contact with the raised surface and the other side is in contact with the supporting surface. The raised surface raises the position of the un-glued side of the shoe support blank. When the shoe last is pressed down, the un-glued side always bends and folds before the glued side, and the glued side bends and attaches to the outside of the un-glued side. This ensures that the glued and un-glued sides of the produced shoe support are successfully bonded, improving the overall structural strength of the shoe support.

[0018] The aforementioned shoe support hot pressing mold can be further configured such that: the two sides of the mold base are respectively provided with limiting plates arranged opposite to each other, and the limiting plates are linked to a position adjustment mechanism.

[0019] Using the above technical solution, two sets of limiting plates guide and limit the shoe tree blank, preventing it from shifting left or right. A position adjustment mechanism is used to adjust the position of the limiting plates to accommodate different specifications and types of shoe tree blanks.

[0020] The aforementioned shoe support hot pressing mold can be further configured as follows: the position adjustment mechanism includes a horizontal adjustment rod and an adjustment block. One end of the horizontal adjustment rod is linked to a limiting plate. The adjustment block is provided with a horizontal adjustment hole. The horizontal adjustment rod is inserted into the horizontal adjustment hole. The side wall of the horizontal adjustment hole is provided with a first set hole. A first fastener is provided at the first set hole. The adjustment block is also provided with a vertical adjustment hole. The central axes of the vertical adjustment hole and the horizontal adjustment hole are perpendicular to each other. A vertical adjustment rod is inserted into the vertical adjustment hole. The side wall of the vertical adjustment hole is provided with a second set hole. A second fastener is provided at the second set hole.

[0021] Using the above technical solution, loosening the first fastener allows the lateral adjustment rod to slide within the lateral adjustment hole, thereby adjusting the lateral position of the limiting plate, i.e., the width between the two sets of limiting plates, to accommodate different sizes and types of shoe trees. After adjustment, tighten the first fastener. Loosening the second fastener allows the vertical adjustment rod to slide within the vertical adjustment hole, thereby adjusting the vertical position of the limiting plate, further accommodating different sizes and types of shoe trees. After adjustment, tighten the second fastener. The adjustment sequence of the lateral and vertical adjustment rods is not mandatory; they can be freely adjusted according to actual conditions, ultimately resulting in the adjustment of the limiting plate position. The first and second fasteners can be standard parts such as screws and bolts.

[0022] The aforementioned shoe support hot pressing mold can be further configured such that: the position adjustment mechanism also includes a mounting base distributed at the lower end of the vertical adjustment rod, the mounting base is provided with a strip hole, a third fastener is provided in the strip hole, the mounting base is provided with a positioning hole corresponding to the vertical adjustment rod, a third fixing hole is provided on the side wall of the positioning hole, and a fourth fastener is provided at the third fixing hole.

[0023] Using the above technical solution, by loosening the third fastener and adjusting the mounting position of the mounting base on the worktable through the slotted hole, the position of the limiting component can also be changed. After adjustment, tighten the third fastener. The positioning hole is used to mount the vertical adjustment rod on the mounting base and is fixed by the fourth fastener.

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0026] Figure 2 This is an exploded view of the support member and mold base according to Embodiment 1 of this utility model;

[0027] Figure 3 This is a schematic diagram of the limiting plate and position adjustment mechanism in Embodiment 1 of this utility model;

[0028] Figure 4 This is a schematic diagram of the support base in Embodiment 5 of this utility model.

[0029] Label annotations: mold base 1, forming cavity 1a, support surface 1b, connecting hole 1c, raised surface 1d; support component 2; limiting plate 3, horizontal adjustment rod 4; adjustment block 5, horizontal adjustment hole 5a, vertical adjustment hole 5b; first fastener 6, vertical adjustment rod 7, second fastener 8; mounting base 9, strip hole 9a, positioning hole 9b; third fastener 10, fourth fastener 11. Detailed Implementation

[0030] 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 protection scope of the present utility model.

[0031] Example 1: As Figures 1 to 3 The shoe support hot pressing mold shown includes a mold base 1 and a forming cavity 1a disposed on the mold base 1. One end of the mold base 1 is provided with lifting units distributed on the side of the forming cavity 1a.

[0032] The mold base 1 has support surfaces 1b respectively placed on both sides of the molding cavity 1a. The lifting unit includes at least one set of support members 2, which are placed on the support surfaces 1b and located at the ends of the support surfaces 1b. The upper end of the support member 2 is higher than the support surface 1b. The mold base 1 has a connecting hole 1c corresponding to the support member 2, and the axial portion of the support member 2 is inserted into the connecting hole 1c.

[0033] The support component 2 forms a rigid connection through axial insertion into the connecting hole 1c, ensuring zero displacement of its vertical height and horizontal position during hot pressing. This prevents the support component 2 from tilting or sinking due to pressure, thus ensuring that the uncoated side always bends and folds before the coated side. The connecting hole 1c allows for quick disassembly and replacement of the support component 2. By replacing the support component 2 with one of different heights or changing the depth of insertion of the support component 2 into the connecting hole 1c, the lifting height of the support component 2 (i.e., the height difference between the upper end of the support component 2 and the support surface 1b) can be changed. This adapts to shoe tree blanks of different thicknesses or adjusts the speed of bending and folding, meeting diverse production needs.

[0034] The mold base 1 has two opposing limiting plates 3 on its sides, and the limiting plates 3 are linked to a position adjustment mechanism. The two sets of limiting plates 3 guide and limit the shoe tree blank, preventing the shoe tree blank from shifting left or right. The position adjustment mechanism is used to adjust the position of the limiting plates 3 to accommodate shoe tree blanks of different specifications and types.

[0035] The position adjustment mechanism includes a horizontal adjustment rod 4 and an adjustment block 5. One end of the horizontal adjustment rod 4 is linked to the limiting plate 3. The adjustment block 5 has a horizontal adjustment hole 5a, into which the horizontal adjustment rod 4 is inserted. The side wall of the horizontal adjustment hole 5a has a first locking hole, and a first fastener 6 is provided at the first locking hole. The adjustment block 5 also has a vertical adjustment hole 5b, whose central axes are perpendicular to those of the horizontal adjustment hole 5a. A vertical adjustment rod 7 is inserted into the vertical adjustment hole 5b, and a second locking hole is provided on the side wall of the vertical adjustment hole 5b, where a second fastener 8 is provided. By loosening the first fastener, the horizontal adjustment rod 4 can slide within the horizontal adjustment hole 5a, thereby adjusting the horizontal position of the limiting plate 3, i.e., the width between the two sets of limiting plates 3, to accommodate different sizes and types of shoe supports. After adjustment, the first fastener 6 is tightened. Loosen the second fastener 8, and the vertical adjustment rod 7 can slide within the vertical adjustment hole 5b, thereby adjusting the vertical position of the limiting plate 3 to further adapt to different sizes and types of shoe supports. After adjustment, tighten the second fastener 8. There is no mandatory requirement for the adjustment sequence of the horizontal adjustment rod 4 and the vertical adjustment rod 7; they can be adjusted freely according to the actual situation, ultimately resulting in the adjustment of the position of the limiting plate 3.

[0036] The position adjustment mechanism also includes a mounting base 9 located at the lower end of the vertical adjustment rod 7. The mounting base 9 has a slotted hole 9a, within which a third fastener 10 is installed. The mounting base 9 has a positioning hole 9b corresponding to the vertical adjustment rod 7. A third settling hole is located on the side wall of the positioning hole 9b, and a fourth fastener 11 is located at the third settling hole. Loosening the third fastener 10 allows adjustment of the mounting position of the mounting base 9 on the worktable through the slotted hole 9a, and also allows for changing the position of the limiting component. After adjustment, tightening the third fastener 10 completes the adjustment. The positioning hole 9b is used to mount the vertical adjustment rod 7 onto the mounting base 9 and secure it with the fourth fastener 11.

[0037] Among them, the first fastener 6, the second fastener 8, the third fastener 10, and the fourth fastener 11 can be standard parts such as screws and bolts.

[0038] Example 2: Shoe support hot pressing mold, including mold base 1 and forming cavity 1a disposed on mold base 1, one end of mold base 1 is provided with lifting units distributed on the side of forming cavity 1a.

[0039] The mold base 1 has support surfaces 1b respectively placed on both sides of the molding cavity 1a. The lifting unit includes at least one set of support members 2, which are placed on the support surfaces 1b and located at the ends of the support surfaces 1b. The upper end of the support member 2 is higher than the support surface 1b. The support member 2 is a screw or bolt, and the inner circumference of the connecting hole 1c is provided with a threaded hole that mates with the screw or bolt.

[0040] The threaded structure of the screws / bolts allows for fine-tuning of the support component 2's height by rotation, adjusting the lifting range of the un-glued side. This adapts to different sizes and types of shoe tree blanks, ensuring that the un-glued side always bends and folds before the glued side. The screws and bolts are standard parts, offering good interchangeability and facilitating maintenance and replacement.

[0041] Embodiment 2 also includes a limit plate 3 and a position adjustment mechanism. This part of the structure is the same as that in Embodiment 1, so it will not be described again here.

[0042] Example 3: Shoe support hot pressing mold, including mold base 1 and forming cavity 1a disposed on mold base 1, one end of mold base 1 is provided with lifting units distributed on the side of forming cavity 1a.

[0043] The mold base 1 is provided with support surfaces 1b respectively placed on both sides of the molding cavity 1a. The lifting unit includes at least one set of support members 2, which are placed on the support surfaces 1b and located at the ends of the support surfaces 1b. The upper end of the support member 2 is higher than the support surface 1b. The support member 2 is a cylindrical rod.

[0044] The cylindrical rod can achieve the function of "the uncoated side always bends and folds before the coated side".

[0045] Embodiment 3 also includes a limit plate 3 and a position adjustment mechanism. This part of the structure is the same as that in Embodiment 1, so it will not be described again here.

[0046] Example 4: Shoe support hot pressing mold, including mold base 1 and forming cavity 1a disposed on mold base 1, one end of mold base 1 is provided with lifting units distributed on the side of forming cavity 1a.

[0047] The mold base 1 has support surfaces 1b respectively placed on both sides of the molding cavity 1a. The lifting unit includes at least one set of support members 2, which are placed on the support surfaces 1b and located at the ends of the support surfaces 1b. The upper end of the support member 2 is higher than the support surface 1b. The support member 2 is integrally formed with the mold base 1 or welded to the mold base 1.

[0048] The support 2 can be fixed to the mold base 1 by either integral molding or welding, thereby achieving the function of "the uncoated side always bends and folds before the coated side".

[0049] Embodiment 4 also includes a limit plate 3 and a position adjustment mechanism. This part of the structure is the same as that in Embodiment 1, so it will not be described again here.

[0050] Example 5: Figure 4 The shoe support hot pressing mold shown includes a mold base 1 and a forming cavity 1a disposed on the mold base 1. One end of the mold base 1 is provided with lifting units distributed on the side of the forming cavity 1a.

[0051] The lifting unit includes a lifting surface 1d, which is distributed on one side of the molding cavity 1a and placed at the end of the mold base 1. On the other side of the molding cavity 1a, there is a support surface 1b arranged opposite to the lifting surface 1d. The center point of the lifting surface 1d is higher than the center point of the support surface 1b.

[0052] One side of the shoe support blank is in contact with the raised surface 1d, and the other side is in contact with the supporting surface 1b. The raised surface 1d raises the position of the un-glued side of the shoe support blank. When the shoe last is pressed down, the un-glued side always bends and folds before the glued side, and the glued side bends and attaches to the outside of the un-glued side, thereby ensuring that the glued and un-glued sides of the produced shoe support are successfully bonded, and improving the overall structural strength of the shoe support.

[0053] Embodiment 5 also includes a limit plate 3 and a position adjustment mechanism. This part of the structure is the same as that in Embodiment 1, so it will not be described again here.

[0054] Examples 1 to 5 all achieve the following: the uncoated side always bends and folds before the coated side, and the coated side bends and attaches to the outside of the uncoated side, thereby ensuring that the coated and uncoated sides of the produced shoe support are successfully bonded, and improving the overall structural strength of the shoe support.

Claims

1. A shoe tree hot pressing mold, comprising a mold base and a forming cavity disposed on the mold base, characterized in that: One end of the mold base is provided with lifting units distributed on the side of the molding cavity.

2. The shoe support hot pressing mold according to claim 1, characterized in that: The mold base is provided with support surfaces respectively placed on both sides of the molding cavity. The lifting unit includes at least one set of support members. The support members are placed on the support surfaces and located at the ends of the support surfaces. The upper end of the support members is higher than the support surfaces.

3. The shoe support hot pressing mold according to claim 2, characterized in that: The mold base has a connecting hole corresponding to the support member, and the axial portion of the support member is inserted into the connecting hole.

4. The shoe support hot pressing mold according to claim 3, characterized in that: The support is a screw or bolt, and the inner circumference of the connecting hole is provided with a threaded hole that mates with the screw or bolt thread.

5. The shoe support hot pressing mold according to claim 2, characterized in that: The support member is a cylindrical rod.

6. The shoe support hot pressing mold according to claim 2, characterized in that: The support component is integrally formed with the mold base or the support component is welded onto the mold base.

7. The shoe support hot pressing mold according to claim 1, characterized in that: The lifting unit includes a lifting surface, which is distributed on one side of the molding cavity and placed at the end of the mold base. On the other side of the molding cavity, there is a support surface arranged opposite to the lifting surface. The center point of the lifting surface is higher than the center point of the support surface.

8. The shoe tree hot pressing mold according to any one of claims 1 to 7, characterized in that: The mold base has limiting plates arranged opposite to each other on both sides, and the limiting plates are linked to a position adjustment mechanism.

9. The shoe support hot pressing mold according to claim 8, characterized in that: The position adjustment mechanism includes a horizontal adjustment rod and an adjustment block. One end of the horizontal adjustment rod is linked to a limiting plate. The adjustment block has a horizontal adjustment hole, into which the horizontal adjustment rod is inserted. The side wall of the horizontal adjustment hole has a first set hole, and a first fastener is provided at the first set hole. The adjustment block also has a vertical adjustment hole, the central axes of which are eccentric and perpendicular to each other. A vertical adjustment rod is inserted into the vertical adjustment hole, and a second set hole is provided on the side wall of the vertical adjustment hole, where a second fastener is provided.

10. The shoe support hot pressing mold according to claim 9, characterized in that: The position adjustment mechanism further includes a mounting base distributed at the lower end of the vertical adjustment rod. The mounting base has a strip-shaped hole, and a third fastener is provided in the strip-shaped hole. The mounting base has a positioning hole corresponding to the vertical adjustment rod. A third settling hole is provided on the side wall of the positioning hole, and a fourth fastener is provided at the third settling hole.

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