Shoemaking hot-pressing die

Abstract

The utility model discloses a shoemaking hot-pressing die, and relates to the technical field of shoemaking hot-pressing dies. The EVA pouring mold comprises the lower mold, the upper mold and the functional mechanism, the functional mechanism comprises the upper middle mold and the lower middle mold, the upper middle mold and the lower middle mold are arranged, the upper middle mold and the lower middle mold are made of bakelite heat insulation plate materials, the bakelite heat insulation plate materials have good heat insulation performance, and when EVA pouring materials are heated, the EVA pouring materials are not prone to falling off. According to the technical scheme, part of heat can be effectively prevented from being conducted to the lower die, a cold blank is protected from being affected by overheating, and therefore it is guaranteed that the cold blank and EVA pouring materials are synchronously foamed at the proper temperature, the situations of color crossing, scorching and the like of finished products caused by flowing generated by excessive melting of the lower die cold blank are avoided, the rejection rate and the production cost are reduced, and the production efficiency is improved. And the positioning columns and the positioning blocks are arranged, so that alignment and positioning of the molds are ensured, the product quality problem caused by mold dislocation in the machining process is avoided, and the rejection rate caused by mold dislocation is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to shoemaking hot press mould technical field, concretely is a kind of shoemaking hot press mould. BACKGROUND

[0002] Shoemaking hot press mould is the important tool indispensable in shoemaking industry, it is specially used to be preheated material such as leather, artificial leather, rubber etc., is formed into vamp, sole etc. in mould through hot press forming process, this kind of mould is usually composed of two parts, including pressure head, mould cavity, support part, compression part etc. assembly, hot press forming process involves preheating material is placed on mould lower module, high temperature and high pressure are applied to make it form, then after cooling and setting, finished product is taken out, this process has efficiency, accuracy, adaptability and environmental protection etc. characteristics, can one-time form complex vamp or sole structure, improves production efficiency.

[0003] When shoe is produced, upper die usually adopts EVA material, lower die adopts 5Gen material, is integrally formed by hot press mould, but due to the melting point of 5Gen material of lower die cold blank is lower than the EVA material of upper die, when synchronous processing, lower die cold blank is prone to excessive melting and flow, resulting in finished product color mixing, burning and other conditions, scrap rate is higher, production cost increases. UTILITY MODEL CONTENT

[0004] Based on this, the purpose of the utility model is to provide a kind of shoemaking hot press mould, the technical problem of excessive melting of lower die cold blank 5Gen material in hot press process resulting in finished product color mixing, burning and other problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of shoemaking hot press mould, including lower die, upper die and function mechanism, the function mechanism includes upper middle die and lower middle die, the top of the lower middle die is penetrated and is provided with positioning column, one end of the positioning column is fixedly connected with the upper die, the top of the lower die is provided with installation slot in front and back sides, the installation slot is provided with positioning hole, the bottom of the lower middle die is fixedly connected with positioning block, the top of the lower die is provided with positioning slot in left and right sides.

[0006] By adopting the above technical scheme, the combination structure of upper middle die and lower middle die makes the mould more stably transmit pressure and temperature when being pressed, avoids the excessive melting of lower die cold blank and the flow of finished product color mixing, burning and other conditions, reduces scrap rate and production cost.

[0007] Further, the positioning column and positioning hole are provided with two groups, and each group of the positioning column and the positioning hole are linearly arrayed and uniformly provided with three.

[0008] By adopting the above technical solution, the equidistant and uniformly arranged positioning pins and positioning holes make the mold more tightly closed during mold closing, reduce the gap between molds, and improve the overall stability of the mold.

[0009] Furthermore, two positioning blocks are symmetrically arranged along the central axis of the lower mold, and the cross-section of the positioning blocks is trapezoidal.

[0010] By adopting the above technical solution, the positioning blocks are symmetrically arranged along the central axis of the lower mold, which ensures that the mold can be accurately aligned when the mold is closed, avoids product size deviation or shape deformation caused by misalignment, and improves the stability and accuracy of mold closing.

[0011] Furthermore, the upper and lower molds are made of bakelite heat insulation board, and the cross-sections of the upper and lower molds are rectangular.

[0012] By adopting the above technical solution, the upper and lower molds made of bakelite heat insulation board have excellent heat insulation effect, protecting the cold billet from overheating, thereby ensuring that the cold billet and EVA pouring material are foamed synchronously at a suitable temperature.

[0013] Furthermore, a lower mold groove is provided in the middle of the top of the lower mold, and three lower mold grooves are arranged in a linear array at equal intervals. A cold blank groove is provided at the bottom of the lower mold groove.

[0014] By adopting the above technical solution, the linear array of the lower mold groove is evenly and uniformly arranged, which enables the mold to process multiple shoe parts at the same time, improves production efficiency, utilizes the space of the mold, and allows multiple products to be produced at the same time in each processing.

[0015] Furthermore, the top of the upper mold is provided with a discharge port, and hydraulic rods are provided on both sides of the upper mold.

[0016] By adopting the above technical solution, the design of the pouring port allows EVA or other shoe material raw materials to be easily added into the upper mold, thereby improving production efficiency.

[0017] Furthermore, a first limiting block is provided on the hydraulic rod, and a second limiting block is provided at one end of the hydraulic rod.

[0018] By adopting the above technical solution, the setting of the first limit block and the second limit block plays a role in safety limiting, and separates the upper mold, the upper middle mold and the lower middle mold when the mold is opened.

[0019] In summary, the present invention has the following main advantages:

[0020] 1. This utility model sets up an upper middle mold and a lower middle mold. The upper middle mold and the lower middle mold are made of bakelite heat insulation board. This material has good heat insulation performance. When heating the EVA pouring material, it can effectively block some of the heat from being conducted to the lower mold, protecting the cold billet from overheating. This ensures that the cold billet and the EVA pouring material foam synchronously at a suitable temperature, avoiding the situation where the cold billet in the lower mold melts excessively and flows, resulting in color mixing, burning, etc. in the finished product, thus reducing the scrap rate and production cost.

[0021] 2. This utility model, by setting positioning columns, positioning holes, and positioning blocks, ensures precise alignment and positioning between the upper mold, lower mold, upper middle mold, and lower middle mold, avoiding product quality problems caused by mold misalignment during processing. It achieves multiple positioning between molds, ensures positional accuracy during processing, improves mold assembly efficiency and processing precision, and reduces scrap rate caused by mold misalignment. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a three-dimensional structural diagram of the functional mechanism of this utility model;

[0024] Figure 3 This is a schematic diagram of the cold billet groove of this utility model;

[0025] Figure 4 This is a schematic diagram of the planar structure of this utility model.

[0026] In the diagram: 1. Lower mold; 2. Upper mold; 3. Functional mechanism; 301. Upper middle mold; 302. Lower middle mold; 303. Positioning pin; 304. Mounting groove; 305. Positioning hole; 306. Positioning block; 307. Positioning groove; 4. Lower mold groove; 5. Cold blank groove; 6. Hydraulic rod; 7. First limit block; 8. Second limit block; 9. Discharge port. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] A shoemaking hot press mold, such as Figures 1-4As shown, the system includes a lower mold 1, an upper mold 2, and a functional mechanism 3. The functional mechanism 3 includes an upper middle mold 301 and a lower middle mold 302. A positioning post 303 is provided through the top of the lower middle mold 302, and one end of the positioning post 303 is fixedly connected to the upper mold 2. The top of the lower mold 1 has mounting grooves 304 on both the front and rear sides, and positioning holes 305 are provided in the mounting grooves 304. A positioning block 306 is fixedly connected to the bottom of the lower middle mold 302. Positioning grooves 307 are provided on the top of the lower mold 1 on both the left and right sides. The combined structure of the upper middle mold 301 and the lower middle mold 302 enables the mold to transmit pressure and temperature more stably when under pressure, avoiding excessive melting of the cold blank in the lower mold, which can cause discoloration and burning of the finished product, thus reducing the scrap rate and production cost. The coordinated use of the positioning post 303, positioning hole 305, positioning block 306, and positioning groove 307 forms a multi-positioning mechanism, which enhances the overall stability of the mold and avoids shaking or displacement of the mold during processing.

[0029] See Figure 1 , Figure 2 , Figure 3 The positioning pins 303 and positioning holes 305 are provided in two sets. Each set has three positioning pins 303 and positioning holes 305 arranged in a linear array at equal intervals. The evenly spaced positioning pins 303 and positioning holes 305 make the mold more compact when it is closed, reduce the gap between molds, and improve the overall stability of the mold. The evenly spaced positioning pins 303 and positioning holes 305 in a linear array make the force on each point of the mold uniform when it is pressed, avoid the alignment deviation caused by uneven force, and improve the accuracy of mold closing.

[0030] See Figure 2 , Figure 4 Two positioning blocks 306 are symmetrically arranged along the central axis of the lower middle mold 302, and the cross-section of the positioning blocks 306 is trapezoidal. The symmetrical arrangement of the positioning blocks 306 along the central axis of the lower middle mold 302 ensures that the mold can be accurately aligned when the mold is closed, avoiding product size deviation or shape deformation caused by misalignment, and improving the stability and accuracy of mold closing. The trapezoidal cross-section of the positioning blocks 306 can gradually contact each other when the mold is closed, reducing the instantaneous impact force and helping to protect the mold from damage.

[0031] See Figure 2 , Figure 4The upper middle mold 301 and the lower middle mold 302 are made of bakelite heat insulation board. The cross-section of the upper middle mold 301 and the lower middle mold 302 is rectangular. The upper middle mold 301 and the lower middle mold 302 made of bakelite heat insulation board have excellent heat insulation effect, protecting the cold blank from overheating, thereby ensuring that the cold blank and EVA pouring material are foamed synchronously at a suitable temperature. The bakelite heat insulation board material has excellent wear resistance and corrosion resistance, and can resist chemical corrosion and physical abrasion in shoe material raw materials and processing, improve service life and reduce production costs.

[0032] See Figure 1 , Figure 3 The lower mold 1 has a lower mold groove 4 in the middle of the top. There are three lower mold grooves 4 arranged in a linear array at equal intervals. A cold blank groove 5 is provided at the bottom of the lower mold groove 4. The linear array of the lower mold grooves 4 at equal intervals allows the mold to process multiple shoe parts at the same time, which improves production efficiency. It makes full use of the space of the mold and allows multiple products to be produced at the same time in each processing. The lower mold groove 4 and the cold blank groove 5 ensure the stable placement and accurate positioning of the shoe material raw material and the cold blank in the mold, avoid product quality problems caused by material movement or misalignment during processing, and improve the processing accuracy of the product.

[0033] See Figure 1 The upper mold 2 has a discharge port 9 on its top and hydraulic rods 6 on both sides. The discharge port 9 allows EVA or other shoe material to be easily added into the upper mold 2, improving production efficiency. The hydraulic rods 6 on both sides of the upper mold 2 provide a stable driving force for the mold. The pressure control of the hydraulic system is precise, making the up and down movement of the upper mold 2 smooth and accurate, avoiding mold collisions or damage caused by unstable driving force.

[0034] See Figure 1 , Figure 2 The hydraulic rod 6 is equipped with a first limiting block 7 and a second limiting block 8 at one end. The first limiting block 7 and the second limiting block 8 serve as safety limiting blocks, separating the upper mold 2, the upper middle mold 301, and the lower middle mold 302 when the mold is opened. If the hydraulic rod 6 is driven too much during the mold closing or opening process, the limiting blocks will promptly stop the mold from moving further, preventing equipment damage and ensuring operational safety.

[0035] The implementation principle of this utility model is as follows: First, the cold billet is added into the cold billet groove 5. Then, the hydraulic rod 6 drives the upper mold 2, the upper middle mold 301, and the lower middle mold 302 to descend until the positioning pin 303 is inserted into the corresponding positioning hole 305. At the same time, the positioning block 306 enters the positioning groove 307. Then, the hydraulic rod 6 continues to press down, causing the upper middle mold 301 and the lower middle mold 302 to move upward along the hydraulic rod 6. After the upper middle mold 301 and the lower middle mold 302 are completely in contact with the upper mold 2, EVA material is added into the upper mold 2 through the pouring port 9. Then, the upper mold 2 heats the EVA material through the internal heating wire. The upper middle mold 301 and the lower middle mold 302 block part of the heat conduction to the lower mold 1, so that the EVA material and the cold billet foam synchronously, completing the processing.

[0036] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A shoe-making hot pressing mold, characterized in that: The device includes a lower mold (1), an upper mold (2), and a functional mechanism (3). The functional mechanism (3) includes an upper middle mold (301) and a lower middle mold (302). A positioning post (303) is provided through the top of the lower middle mold (302). One end of the positioning post (303) is fixedly connected to the upper mold (2). The front and rear sides of the top of the lower mold (1) are provided with mounting grooves (304). A positioning hole (305) is provided in the mounting groove (304). A positioning block (306) is fixedly connected to the bottom of the lower middle mold (302). Positioning grooves (307) are provided on the left and right sides of the top of the lower mold (1).

2. The shoe-making hot pressing mold according to claim 1, characterized in that: The positioning posts (303) and positioning holes (305) are provided in two sets, and each set of positioning posts (303) and positioning holes (305) is arranged in a linear array with three posts (303) and three holes (305) evenly spaced at equal intervals.

3. The shoe-making hot pressing mold according to claim 1, characterized in that: Two positioning blocks (306) are symmetrically arranged along the central axis of the lower middle mold (302), and the cross section of the positioning blocks (306) is trapezoidal.

4. The shoe-making hot pressing mold according to claim 1, characterized in that: The upper middle mold (301) and the lower middle mold (302) are made of bakelite heat insulation board, and the cross-section of the upper middle mold (301) and the lower middle mold (302) is rectangular.

5. A shoe-making hot-pressing mold according to claim 1, characterized in that: The lower mold (1) has a lower mold groove (4) in the middle of its top. The lower mold groove (4) is arranged in a linear array with three grooves evenly spaced. The lower mold groove (4) has a cold blank groove (5) at its bottom.

6. A shoe-making hot-pressing mold according to claim 5, characterized in that: The upper mold (2) has a discharge port (9) at the top and hydraulic rods (6) on both sides of the upper mold (2).

7. A shoe-making hot pressing mold according to claim 6, characterized in that: A first limiting block (7) is provided on the hydraulic rod (6), and a second limiting block (8) is provided at one end of the hydraulic rod (6).

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