A sole transverse perforation hot press forming die

Abstract

The utility model relates to the field of sole production and processing technology, especially to a sole transverse perforation hot press forming die, and the whole set of die is composed of an upper die plate, a bottom die plate and a middle frame formed by two inner side plates and two outer side plates rotatable outward, the two inner side plates on the middle frame of the die are respectively embedded with transverse steel parts, the steel parts correspond to corresponding bosses on the two outer side plates, the die realizes one-time accurate forming of sole lateral perforation forming (the same way can also realize the extreme depth of the transverse blind hole on the midsole) through the mode of lateral mold opening, perfectly overcomes the pain point that the traditional hot press mode cannot produce the transverse perforation type midsole, significantly improves the product quality, the die structure not only provides wide improvement space for the realization of lightweight of high-end running shoe midsole, but also expands the product application range of the traditional hot press forming equipment and improves the competitiveness of the traditional hot press factory.

Description

Technical Field

[0001] This utility model relates to the field of shoe sole production and processing technology, and in particular to a hot pressing mold for transverse perforation of shoe soles. Background Technology

[0002] The sole is a key component of footwear products, and its molding quality directly affects the comfort and durability of the shoe. In the production of soles, thermoforming is a widely used process that uses a specific mold to heat and press polymer materials, causing them to solidify and form a predetermined sole shape.

[0003] As consumers increasingly demand functionality and aesthetics from footwear products, some sole designs require horizontal perforations on their sidewalls. These perforations not only increase the breathability of the shoe but also serve as unique decorative elements or are used to insert functional components such as shoelaces.

[0004] In existing technologies, there are generally two methods to achieve this type of lateral perforation. One method involves first hot-pressing the sole into a solid form, and then drilling or other secondary machining processes to create holes in the sidewalls. This method adds an extra step, resulting in low production efficiency. Furthermore, the drilling process is prone to generating burrs, making it difficult to ensure the accuracy and consistency of the hole positions, thus affecting the overall quality of the product.

[0005] Another approach is to attempt one-piece molding using molds with lateral steel inserts. However, existing molds of this type often have inadequate structural designs, lacking effective coordination between the extraction of the lateral core and the opening of the mold body. When demolding is required after hot pressing, even if the lateral core can be extracted, the complex shape of the sole itself makes traditional vertical mold opening methods prone to causing the product to get stuck or torn during demolding, especially at the edges of the holes. Therefore, how to efficiently integrate the molding function of lateral perforation with a convenient and non-destructive demolding process is a technical problem that urgently needs to be solved in this field.

[0006] Therefore, this utility model proposes a hot-press forming mold for transverse perforation of shoe soles to overcome the shortcomings of the prior art. Utility Model Content

[0007] To overcome the above deficiencies, this utility model provides a hot-press molding die for transverse perforation of shoe soles, which aims to improve the problem that existing shoe sole mold structures lack an integrated structure that can accurately form holes and cooperate with a convenient demolding process when performing transverse perforation molding.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a hot pressing mold for transverse perforation of shoe sole, comprising: an upper template, a bottom template, and a middle frame disposed between the upper template and the bottom template, the middle frame comprising an inner side plate and an outer side plate rotatably connected to the side wall of the inner side plate around a preset pivot, the upper template, the bottom template and the middle frame together forming a mold cavity, and a transverse steel insert;

[0009] The transverse steel insert includes an insert slider that is slidably connected to a transverse guide groove opened in the outer wall of the inner side plate and a core top boss that extends into the mold cavity from the outer side plate wall.

[0010] The bottom surface of the upper template is fixedly connected to a first mold nail, and the top surface of the inner side plate is provided with a first mold sleeve for engaging the first mold nail. The top surface of the bottom template is fixedly connected to a second mold nail, and the bottom surface of the inner side plate is provided with a second mold sleeve for engaging the second mold nail. The precise positioning and locking of the mold when it is closed is achieved through the cooperation of the mold nail and the mold sleeve.

[0011] Preferably, a third mold nail is fixedly connected to the side wall of the outer side plate, and a third mold sleeve for engaging the third mold nail is provided on the corresponding side wall of the inner side plate.

[0012] Preferably, the rear part of the upper template is rotatably connected to the middle frame via a rear hinge.

[0013] Preferably, a first handle for opening the upper template is fixedly connected to the upper template.

[0014] Preferably, the bottom of the inner side plate is rotatably connected to one side of the bottom template via a pivot.

[0015] Preferably, a second handle for pushing the inner side plate to rotate is also fixedly connected to the inner side plate.

[0016] Preferably, a horizontal strip insert is also fixedly connected to the inner side plate, and the horizontal strip insert is positioned so that it can support the molded product in the mold cavity when the inner side plate is rotated open.

[0017] Preferably, a third handle is also fixedly connected to the bottom template.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model, by setting a horizontally insertable transverse steel insert, the mechanism includes a transverse steel insert slidably connected to the guide groove and a core top boss fixed to the outer side plate, which solves the problem that existing shoe sole molds cannot integrally form lateral holes or require secondary processing, resulting in low precision and poor efficiency. It achieves the effect of accurately forming the transverse holes of the shoe sole in one go during the hot pressing process, simplifying the production process and improving the product qualification rate.

[0020] 2. This utility model solves the problem of difficult demolding and easy product damage when removing shoe sole products with complex side walls by designing the mold as a middle frame consisting of an upper template, a bottom template, and inner and outer side plates that can be rotated and opened in stages, and using multiple sets of mold nails and mold sleeves for locking. It achieves the effect of opening the mold cavity in stages and in multiple directions, so that the finished product can be safely and conveniently removed from the side, significantly reducing the difficulty of demolding and the risk of product damage. Attached Figure Description

[0021] Figure 1 This is a perspective view of a hot-pressing mold for transverse perforation of a shoe sole, as proposed in this utility model.

[0022] Figure 2 This is a schematic diagram of the inner side plate of a hot-pressing mold for transverse perforation of a shoe sole, as proposed in this utility model.

[0023] Figure 3 This is a schematic diagram of a horizontal strip insert for a hot-pressing mold for transverse perforation of a shoe sole, as proposed in this utility model.

[0024] Figure 4 This is a schematic diagram of the bottom template of a hot pressing mold for transverse perforation of shoe soles proposed in this utility model;

[0025] Figure 5 This is a schematic diagram of the third mold sleeve of a hot-pressing mold for transverse perforation of shoe soles proposed in this utility model.

[0026] Legend:

[0027] 1. Upper template; 2. Inner side panel; 3. Outer side panel; 4. Bottom template; 5. First mold pin; 6. First mold sleeve; 7. Horizontal strip insert; 8. Second mold pin; 9. Second mold sleeve; 10. First handle; 11. Second handle; 12. Third handle; 13. Third mold pin; 14. Third mold sleeve. Detailed Implementation

[0028] 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.

[0029] Reference Figures 1-5 An embodiment of this utility model is provided: a hot pressing mold for transverse perforation of shoe sole, including a bottom template 4, a middle frame disposed on the top surface of the bottom template 4, and an upper template 1 covering the top of the middle frame. The upper template 1, the middle frame and the bottom template 4 together form a mold cavity for hot pressing shoe sole in a closed state. The middle frame is composed of an inner side plate 2 and an outer side plate 3. The outer side plate 3 is rotatably connected to the side wall of the inner side plate 2 around a preset pivot.

[0030] To achieve the lateral perforation of the sole, a lateral core top boss is provided on the outer wall of the outer side plate 3. The hot pressing mold for the lateral perforation of the sole also integrates a lateral steel insert, which includes a lateral steel insert and a core top boss. The lateral steel insert is fixedly installed in the guide groove of the inner side plate 2 by a sliding connection. The core top boss is fixed on one side of the outer side plate 3. When the outer side plate 3 rotates to the mold closing, the core top boss of the outer side plate 3 can accurately overlap with the lateral steel insert assembled with the inner side plate 2, thereby reserving a lateral hole in the side wall of the sole during the subsequent hot pressing process.

[0031] To ensure the mold closes securely during hot pressing and facilitates subsequent step-by-step demolding, a first mold nail 5 is fixedly connected to the bottom surface of the upper template 1 when the mold is closed. A first mold sleeve 6 for engaging the first mold nail 5 is correspondingly provided on the top surface of the inner side plate 2. When the upper template 1 is closed, the first mold nail 5 is embedded in the first mold sleeve 6, achieving precise positioning and locking of the upper template 1 and the middle frame. Correspondingly, a second mold nail 8 is fixedly connected to the top surface of the bottom template 4, and a second mold sleeve 9 for engaging the second mold nail 8 is provided on the bottom surface of the inner side plate 2. This structure ensures that the middle frame is also firmly locked when combined with the bottom template 4, thereby guaranteeing the structural integrity and dimensional accuracy of the entire mold cavity during hot pressing.

[0032] To facilitate mold opening, the rear of the upper template 1 is rotatably connected to the middle frame via a rear hinge, and a first handle 10 for the operator to hold is fixedly connected to the end of the upper template 1 away from the hinge. When demolding, the operator can lift the first handle 10 to make the upper template 1 rotate upward around the hinge and open, thus separating the upper template 1 from the finished product.

[0033] To ensure the integrity and stability of the middle frame composed of the inner side plate 2 and the outer side plate 3 in the closed state, a third mold nail 13 is fixedly connected to the side wall of the outer side plate 3. At the same time, a third mold sleeve 14 for engaging the third mold nail 13 is provided on the corresponding side wall of the inner side plate 2. When the outer side plate 3 rotates around the pivot to the closed position, the third mold nail 13 and the third mold sleeve 14 engage with each other, thereby firmly locking the outer side plate 3 onto the inner side plate 2.

[0034] In order to enable the middle frame to rotate and open relative to the bottom template 4, the bottom of the inner side plate 2 is rotatably connected to one side of the bottom template 4 through a pivot. The entire middle frame can rotate around the connection between the inner side plate 2 and the bottom template 4, thereby completely opening the side wall of the mold cavity. In order to facilitate the application of force, a second handle 11 is also fixedly connected to the inner side plate 2. The operator can drive the inner side plate 2 and the entire middle frame to rotate by pushing the second handle 11.

[0035] To provide stable support for the molded sole during demolding and prevent it from falling or deforming due to gravity when the mold is opened, a horizontal strip insert 7 is fixedly connected to the inner side plate 2. The horizontal strip insert 7 is positioned to support the finished product in the mold cavity when the inner side plate 2 is rotated open. Specifically, the horizontal strip insert 7 can support the bottom or side of the sole during the opening of the inner side plate 2. Finally, to stably fix the base of the mold during demolding, a third handle 12 is fixedly connected to the bottom template 4. The operator can fix the position of the entire mold by pressing or holding the third handle 12.

[0036] Working principle: Before hot pressing, the small foam is first pushed along the direction of the transverse steel insert fixed on the inner side plate 2, so that the small foam passes through the insert and is fixed in the predetermined position in the mold cavity. Then, the outer side plate 3 is rotated around the pivot connecting it to the inner side plate 2 to the closed position, so that the third mold nail 13 is engaged with the third mold sleeve 14. Then, the middle frame composed of the inner side plate 2 and the outer side plate 3 is placed on the bottom template 4, so that the second mold nail 8 is engaged with the second mold sleeve 9. Finally, the upper template 1 is rotated downward around the hinge at its rear to close, so that the first mold nail 5 is engaged with the first mold sleeve 6. At this point, the mold is completely closed and locked, forming a complete mold cavity with transverse steel inserts inside, which can be used for subsequent hot pressing processes.

[0037] When the hot pressing molding is complete and demolding is required, the operator first holds the first handle 10 and pulls it upward to make the upper template 1 rotate around the hinge and open. Then, the operator holds the second handle 11 and pulls it upward to lift the middle frame, pushing the outer side plates 3 on both sides to rotate outward around the inner side plate 2 as the axis, so that the third mold nail 13 separates from the third mold sleeve 14. After the outer side plates 3 are opened, the operator presses the third handle 12 with one hand to fix the bottom template 4, and pushes the second handle 11 with the other hand to make the inner side plate 2 and the horizontal strip inlay 7 on it rotate around the axis connecting it to the bottom template 4 and open. During this process, the horizontal strip inlay 7 will support the sole. Finally, since the side wall of the mold is completely open, the finished sole with horizontal holes can be easily taken out from the side.

Claims

1. A hot-pressing mold for transverse perforation of shoe soles, comprising: The upper template (1) and the bottom template (4), and the middle frame disposed between the upper template (1) and the bottom template (4), the middle frame includes two inner side plates (2) and two outer side plates (3) that can be rotatably connected to the inner side plates (2) around a preset pivot. The upper template (1), the bottom template (4) and the middle frame together close to form a mold cavity. Its characteristic is that it further includes: A transverse mold core steel insert, the transverse mold core steel insert including a first mold nail (5) fixed on the inner side plate and extending through the wall of the inner side plate (2) into the mold cavity, a first mold nail (5) fixedly connected on the upper template (1), a first mold sleeve (6) for engaging the first mold nail (5) on the top surface of the inner side plate (2), a second mold nail (8) fixedly connected on the bottom template (4), and a second mold sleeve (9) for engaging the second mold nail (8) on the bottom surface of the inner side plate (2).

2. The hot pressing mold for transverse perforation of shoe soles according to claim 1, characterized in that: A third mold nail (13) is fixedly connected to the side wall of the outer side plate (3), and a third mold sleeve (14) for engaging the third mold nail (13) is provided on the corresponding side wall of the inner side plate (2).

3. The hot pressing mold for transverse perforation of shoe soles according to claim 1, characterized in that: The rear part of the upper template (1) is rotatably connected to the middle frame via a rear hinge.

4. The hot pressing mold for transverse perforation of shoe soles according to claim 3, characterized in that: The upper template (1) is fixedly connected to a first handle (10) for opening the upper template (1).

5. The hot pressing mold for transverse perforation of shoe soles according to claim 1, characterized in that: A second handle (11) for moving the inner side plate (2) is fixedly connected to the inner side plate (2).

6. The hot pressing mold for transverse perforation of shoe soles according to claim 5, characterized in that: The upper template (1) is fixedly connected to a first handle (10) for opening the upper template (1).

7. The shoe sole transverse perforation hot pressing mold according to claim 1, characterized in that: A horizontal strip insert (7) is also fixedly connected to the inner side plate (2). The horizontal strip insert (7) is positioned so that it can support the molded product in the mold cavity when the inner side plate (2) is rotated open.

8. The hot pressing mold for transverse perforation of shoe soles according to claim 1, characterized in that: A third handle (12) is also fixedly connected to the bottom template (4).

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