A three-layered sole forming mold

Abstract

The utility model provides a kind of three-layer structure's shoe sole forming die, including lower mould and upper mould, the upper side of lower mould is equipped with lower cavity, the lower side of upper mould is equipped with upper cavity, the upper side of upper mould is equipped with positioning structure, the upper side of upper mould is connected with cover plate, the lower side of cover plate is equipped with the recess of accommodating positioning structure.The positioning structure of the upper side of upper mould is accommodated by the cover plate of the upper side of upper mould, the upper side of cover plate is plane and can be directly attached with mould pressing equipment, the thickness of cover plate and upper mould is smaller, so that the weight is lighter, and the cover plate and upper mould can be easily rotated to open and close mould operation.

Description

Technical Field

[0001] This utility model relates to the field of shoe sole forming mold technology, specifically to a three-layer shoe sole forming mold. Background Technology

[0002] In the shoe sole manufacturing industry, compression molding is a process in which shoe material blanks are placed between the upper and lower molds of a mold, and then the mold is sent into a compression molding machine. The compression molding machine applies a preset high temperature and high pressure, causing the shoe material blanks to melt and vulcanize, while tightly fitting the shape of the mold cavity to complete the molding process, ultimately obtaining shoe sole products that meet the design size, appearance and performance requirements.

[0003] In the prior art, shoe sole molding molds mainly consist of an upper mold, a lower mold, and matching positioning and locking structures. The positioning and locking structures are components that ensure mold closing accuracy and prevent mold displacement during the molding process, and are usually located on the upper side of the upper mold.

[0004] Since the mold needs to be sent to the molding equipment for high-temperature and high-pressure treatment after mold closing, the upper side of the upper mold needs to be designed as a flat structure to ensure good fit between the mold and the molding equipment and to guarantee uniform pressure transmission. This is to avoid defects in the shoe sole forming or abnormal equipment operation caused by uneven contact surfaces. However, if the positioning and locking structures on the upper side of the upper mold protrude from this plane, it will directly affect the fit between the mold and the molding equipment, resulting in uneven pressure transmission, and may even damage the molding equipment or the mold itself.

[0005] To solve the above problems, the commonly used solution in the prior art is to increase the overall thickness of the upper mold and to open a groove structure on the upper side of the upper mold, embedding the positioning structure and locking structure into the groove so that the top of the positioning structure and locking structure does not protrude from the upper side of the upper mold, thereby ensuring the flatness of the upper side of the upper mold and meeting the matching requirements with the molding equipment.

[0006] However, the above solution has the following problems: as the thickness of the upper mold increases, its own weight increases significantly. The upper mold of the shoe sole forming mold is usually connected to the lower mold by a hinge. During the mold opening process, the upper mold needs to be rotated to remove the formed shoe sole product. The thicker upper mold will bring a large load to the rotation operation, which not only increases the labor intensity of the operators and reduces the mold opening efficiency, but may also cause the hinge part of the mold to wear faster due to long-term bearing of a large load, shortening the service life of the mold and increasing production and maintenance costs. Utility Model Content

[0007] In view of the problems pointed out in the background art, this utility model proposes a three-layer shoe sole molding mold to solve the above-mentioned technical problems.

[0008] The technical solution of this utility model is implemented as follows:

[0009] A three-layer shoe sole forming mold includes a lower mold and an upper mold. The upper side of the lower mold has a lower cavity, the lower side of the upper mold has an upper cavity, the upper side of the upper mold has a positioning structure, the upper side of the upper mold is connected to a cover plate, and the lower side of the cover plate has a groove for accommodating the positioning structure.

[0010] The present invention is further configured to include an inner shoe mold disposed in the lower cavity and the upper cavity, the upper side of the inner shoe mold being provided with an annular sealing surface and the upper side of the inner shoe mold being provided with an upwardly protruding positioning part.

[0011] The side wall of the upper cavity is provided with a second sealing surface that seals with the first sealing surface.

[0012] The upper mold is provided with a positioning groove that passes through its upper side and connects to the upper cavity. The positioning groove is located inside the sealing surface two, and the positioning part is adapted to connect with the positioning groove.

[0013] The positioning structure includes a positioning ring and a limiting strip. The limiting strip is fixedly set on the upper side of the upper mold and is used to limit the upward movement of the inner shoe mold. The positioning ring includes a positioning ring one set on the positioning part and a positioning ring two set on the upper mold, and also includes a positioning rod inserted into the positioning ring one and the positioning ring two.

[0014] The present invention is further provided that the upper side of the positioning part is provided with a handle, and the handle is located in the groove.

[0015] The present invention is further provided that the cover plate has an observation port extending through its upper and lower sides.

[0016] The present invention is further configured such that the lower mold, the upper mold, and the cover plate are all rectangular plate structures.

[0017] The present invention is further configured such that the outer side wall of the inner shoe mold is spaced apart from the inner side walls of the upper cavity and the lower cavity.

[0018] The present invention is further configured such that a positioning post is provided on the upper side of the lower mold, and a positioning hole corresponding to and connected to the positioning post is provided on the lower side of the upper mold.

[0019] The present invention is further configured such that the front sides of the upper mold, the lower mold, and the cover plate are respectively connected to lifting rings.

[0020] The present invention is further configured such that the rear side of the lower mold and the rear side of the upper mold are rotatably connected.

[0021] The present invention is further configured such that the rear side of the cover plate and the rear side of the upper mold are rotatably connected.

[0022] By adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0023] The three-layer shoe sole molding die provided by this utility model has a flip-up cover plate on the upper side of the upper die to accommodate the positioning structure on the upper side of the upper die. The upper side of the cover plate is flat and can be directly attached to the molding equipment. The thickness of the cover plate and the upper die is small, which makes the weight light and allows the cover plate and the upper die to be easily rotated for opening and closing operations.

[0024] During operation, first open the cover plate and the upper mold, then place the shoe material blank between the inner shoe mold and the lower mold; then close the upper mold and insert the positioning rod into positioning ring one and positioning ring two to position and fix the inner shoe mold and the upper mold. At this time, the lower cavity of the lower mold and the upper cavity of the upper mold form a closed molding cavity. The inner shoe mold is located inside the molding cavity. At the same time, the positioning part of the inner shoe mold is adapted to the positioning groove of the upper mold, and the sealing surface one on the upper side of the inner shoe mold is sealed to the sealing surface two of the upper mold; then close the cover plate and send the entire mold into the molding equipment for high temperature and high pressure treatment. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the front structure of this utility model.

[0027] Figure 2 This is a schematic diagram of the rear structure of this utility model.

[0028] Figure 3 This is a schematic diagram of the disassembled structure of the cover plate of this utility model. Figure 1 .

[0029] Figure 4 This is a schematic diagram of the disassembled structure of the cover plate of this utility model. Figure 2 .

[0030] Figure 5 This is a structural diagram showing the disassembled lower and upper molds of this utility model. Figure 1 .

[0031] Figure 6 This is a structural diagram showing the disassembled lower and upper molds of this utility model. Figure 2 .

[0032] Figure 7 This is a structural diagram showing the disassembled upper mold and inner shoe mold of this utility model. Figure 1 .

[0033] Figure 8This is a structural diagram showing the disassembled upper mold and inner shoe mold of this utility model. Figure 2 .

[0034] The following are the labels in the attached diagram: Lower mold 1, Upper mold 2, Lower cavity 3, Upper cavity 4, Cover plate 5, Groove 6, Inner shoe mold 7, Sealing surface 1 8, Positioning part 9, Sealing surface 2 10, Positioning groove 11, Restriction strip 12, Positioning ring 1 13, Positioning ring 2 14, Positioning rod 15, Handle 16, Observation port 17, Positioning post 18, Positioning hole 19, Lifting ring 20. Detailed Implementation

[0035] 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.

[0036] For reference as follows Figures 1-8 The present invention will be described as follows:

[0037] Example: A three-layer shoe sole molding die is used to realize the compression molding of shoe soles. By rationally designing the structure and connection relationship of each component, it solves the technical problems of existing molds such as large upper mold thickness, heavy weight, and high mold opening and closing load, while ensuring the molding accuracy and production convenience of shoe soles.

[0038] All components of the shoe sole molding mold in this application are made of high-temperature resistant and high-strength materials that meet the requirements of the molding process, ensuring the structural stability and service life of the mold under high temperature and high pressure environment.

[0039] It includes a lower mold 1 and an upper mold 2. Both the lower mold 1 and the upper mold 2 are rectangular plate structures. The size of the plate is determined according to the specifications of the target shoe sole, and its thickness is set according to the pressure requirements of the molding process and the structural strength requirements. Compared with the upper mold in the prior art, the thickness of the upper mold 2 in this solution is greatly reduced to reduce its own weight.

[0040] The rear side of the lower mold 1 and the rear side of the upper mold 2 are connected by a hinge. The hinge part adopts a wear-resistant rotating shaft structure to ensure that the upper mold 2 can be flexibly flipped and opened around the hinge point, so as to realize the operation of opening the mold to remove parts and closing the mold to form parts.

[0041] The upper side of the lower mold 1 has a recessed lower cavity 3. The shape of the lower cavity 3 is perfectly matched to the contour of the lower surface of the sole, and its depth, curvature and other parameters are precisely processed according to the design requirements of the sole.

[0042] The lower side of the upper mold 2 is provided with an upper concave cavity 4. The shape of the upper cavity 4 is adapted to the contour of the upper surface of the shoe sole. The upper cavity 4 and the lower cavity 3 are arranged correspondingly to each other, and together they form the cavity structure for shoe sole molding after the mold is closed.

[0043] The upper side of the upper mold 2 is provided with a positioning structure.

[0044] The upper side of the upper mold 2 is connected to a cover plate 5. The cover plate 5 is also a rectangular plate structure, and its size is completely matched with the upper side size of the upper mold 2, ensuring that the cover plate 5 can completely cover the upper side of the upper mold 2 after it is closed.

[0045] The rear side of the cover plate 5 is rotatably connected to the rear side of the upper mold 2 using the same hinge method as the upper and lower molds, so that the cover plate 5 can be flipped open around the hinge point. The cover plate 5 is designed to be relatively thin.

[0046] On the lower side of the cover plate 5, corresponding to the position of the positioning structure on the upper side of the upper mold 2, there is a groove 6. The size and shape of the groove 6 are perfectly matched with the shape of the positioning structure, or the cavity of the groove 6 is larger, ensuring that after the cover plate 5 is closed, the positioning structure on the upper mold 2 can be completely embedded in the groove 6 and does not protrude from the upper side of the cover plate 5. The upper side of the cover plate 5 is machined into a flat plane, which can directly fit with the pressure surface of the molding equipment, ensuring uniform pressure transmission and meeting the fitting requirements of the molding equipment.

[0047] The mold also includes an inner shoe mold 7, which is assembled inside the cavity formed by the lower cavity 3 and the upper cavity 4. Its structure is adapted to the inner contour of the shoe sole and is used to form the inner shape of the shoe sole. The upper side of the inner shoe mold 7 has an integrally formed annular sealing surface 8, which is a flat annular plane used to cooperate with the sealing structure of the upper mold 2 to achieve a seal.

[0048] The upper side of the inner shoe mold 7 is also integrally formed with an upwardly protruding positioning part 9, which is located inside the sealing surface 8.

[0049] Corresponding to sealing surface 8, an annular sealing surface 10 is integrally formed on the side wall of the upper cavity 4. The size and shape of sealing surface 10 and sealing surface 8 are perfectly matched, and the flatness of both meets the sealing requirements. When the mold is closed, sealing surface 8 and sealing surface 10 fit tightly together to form an annular sealing fit, which can prevent the colloid after the shoe material blank melts during the molding process from overflowing and ensure the molding quality of the shoe sole.

[0050] The outer side wall of the inner shoe mold 7 maintains a preset interval distance with the inner side walls of the upper cavity 4 and the lower cavity 3. This interval distance is the thickness of the sole. The interval size is precisely controlled according to the thickness requirements of the target sole. This interval area forms the molding cavity of the sole. Under high temperature and high pressure, the shoe material blank fills the molding cavity and is finally molded into a sole product that meets the requirements.

[0051] The upper mold 2 is provided with a positioning groove 11 that passes through its upper side and connects to the upper cavity 4. The positioning groove 11 is located inside the sealing surface 10, and the positioning part 9 is adapted to and connected to the positioning groove 11.

[0052] The positioning structure includes a positioning ring and a limiting strip 12. The limiting strip 12 is a long strip structure that is fixedly installed on the upper side of the upper mold 2 by welding. Its length direction is arranged in the left and right direction. The lower surface of the limiting strip 12 abuts against the upper side of the positioning part 9 of the inner shoe mold 7, which is used to limit the inner shoe mold 7 from moving upward during the molding process.

[0053] The positioning rings consist of positioning ring one 13 and positioning ring two 14. Positioning ring one 13 is fixedly mounted on the upper side of the positioning part 9 of the inner shoe mold 7 by welding or integral molding. Positioning ring two 14 is fixedly mounted on the upper side of the upper mold 2 by the same fixing method. There are two positioning rings two 14, which are symmetrically arranged on the left and right sides of positioning ring one 13. The axes of positioning ring one 13 and the two positioning rings two 14 are on the same straight line to ensure coaxiality. The positioning rod 15 is a cylindrical structure with a diameter that matches the inner diameter of positioning ring one 13 and positioning ring two 14. It can be inserted into the inner holes of positioning ring one 13 and the two positioning rings two 14 to achieve precise positioning and fixation of the inner shoe mold 7 and the upper mold 2, preventing relative displacement between the two during the molding process.

[0054] A handle 16 is provided on the upper side of the positioning part 9. The handle 16 is welded to the upper side of the positioning part 9. The handle 16 is arranged in the front-to-back direction, and the height of the handle 16 is lower than the depth of the groove 6, ensuring that when the cover plate 5 is closed, the handle 16 is completely located in the groove 6, without affecting the fit between the cover plate 5 and the molding equipment. The structural design of the handle 16 conforms to ergonomics, making it convenient for operators to lift, assemble, and disassemble the inner shoe mold 7, thus improving operational convenience.

[0055] The cover plate 5 is provided with observation ports 17 that run through its upper and lower sides. The size and position design of the observation ports 17 ensure that the operator can clearly observe the status of the handle 16, positioning ring 13, and limiting strip 12 in the groove 6 through the observation ports 17, which is convenient for checking the assembly status of each component during the mold closing and positioning process and timely detection of assembly deviations.

[0056] On the upper side of the lower mold 1, a number of positioning pins 18 are evenly arranged along the edge. The positioning pins 18 are cylindrical structures and are perpendicular to the upper side of the lower mold 1. On the lower side of the upper mold 2, corresponding to the position of the positioning pins 18, positioning holes 19 adapted to the positioning pins 18 are opened. The depth of the positioning holes 19 matches the height of the positioning pins 18. When the upper and lower molds are closed, the positioning pins 18 are inserted into the positioning holes 19, which further ensures the mold closing accuracy of the upper mold 2 and the lower mold 1 and prevents misalignment during the mold closing process.

[0057] The front sides of the upper mold 2, lower mold 1, and cover plate 5 are respectively connected by welding with lifting rings 20. The lifting rings 20 are ring structures, and their strength meets the lifting requirements. Operators can drive the upper mold 2, lower mold 1, and cover plate 5 to rotate around their respective hinge points by pulling the corresponding lifting rings 20, thereby realizing the mold opening and closing operation and reducing the difficulty of operation.

[0058] The working process of this utility model mold is as follows:

[0059] Mold opening preparation: The operator pulls the lifting ring 20 on the front side of the cover plate 5 to flip and open the cover plate 5 around its rear hinge point, so that the positioning structure on the upper side of the upper mold 2 is fully exposed; then, the operator pulls the lifting ring 20 on the front side of the upper mold 2 to flip and open the upper mold 2 around its rear hinge point, so that the lower cavity 3 of the lower mold 1 is fully exposed. At this time, the inner shoe mold 7 can be taken out from the lower cavity 3, and the mold opening operation is completed.

[0060] Placement of blank material: The pre-prepared shoe material blank (rubber, rubber-plastic composite material, etc. can be selected according to the requirements of the shoe sole material) is evenly placed between the outer wall of the inner shoe mold 7 and the lower cavity 3 of the lower mold 1 according to the preset amount, ensuring that the blank material covers the entire bottom area of ​​the lower cavity 3, and the thickness of the blank material is slightly greater than the thickness of the shoe sole molding cavity, so as to reserve sufficient filling amount for compression molding.

[0061] Upper mold closing and positioning: Place the inner shoe mold 7 back into the lower cavity 3, ensuring that the bottom of the inner shoe mold 7 fits snugly against the bottom of the lower cavity 3; then, pull the lifting ring 20 on the front side of the upper mold 2 to flip the upper mold 2 around the hinge point and close the mold, so that the lower side of the upper mold 2 fits snugly against the upper side of the lower mold 1. At this time, the positioning pin 18 of the lower mold 1 is inserted into the positioning hole 19 of the upper mold 2, achieving the initial positioning of the upper mold 2 and the lower mold 1. At the same time, the positioning part 9 of the inner shoe mold 7 is inserted into the positioning groove 11 of the upper mold 2, and the positioning part 9 and the positioning groove 11 are precisely matched, achieving the initial positioning of the inner shoe mold 7 and the upper mold 2; the sealing surface 1 8 on the upper side of the inner shoe mold 7 fits tightly against the sealing surface 2 10 on the side wall of the upper cavity 4 of the upper mold 2, forming an annular seal. Next, the positioning rod 15 is inserted into the inner holes of the positioning ring 13 and the two positioning rings 14 to complete the final positioning and fixing of the inner shoe mold 7 and the upper mold 2, limiting the relative displacement of the two during the molding process; at this time, the lower cavity 3 and the upper cavity 4 form a closed molding cavity, the inner shoe mold 7 is located inside the molding cavity, and the gap between the outer wall of the inner shoe mold 7 and the inner wall of the molding cavity is the molding cavity of the sole, and the shoe material blank is sealed in the molding cavity.

[0062] Cover plate mold closing: Pull the lifting ring 20 on the front side of the cover plate 5 to flip the cover plate 5 around its rear hinge point to close the mold, so that the cover plate 5 completely covers the upper side of the upper mold 2. At this time, the positioning structure (limiting strip 12, positioning ring 13, positioning ring 2 14, positioning rod 15) on the upper mold 2 is completely embedded in the groove 6 on the lower side of the cover plate 5. The upper side of the cover plate 5 remains flat and can be directly attached to the pressure surface of the molding equipment.

[0063] Compression molding: After the mold is closed, the entire mold is sent into the compression molding equipment. The compression molding equipment applies high temperature and high pressure to the mold according to the preset process parameters (temperature, pressure, holding time). Under the high temperature and high pressure environment, the shoe material blank undergoes melting and vulcanization reaction, gradually filling the entire shoe sole molding cavity, while closely adhering to the surfaces of the lower cavity 3, the upper cavity 4 and the inner shoe mold 7, thus completing the molding of the shoe sole.

[0064] Mold opening and part removal: After the molding is completed, the mold is removed from the molding equipment. After the mold cools to the preset temperature, the cover plate 5 is opened in the reverse order of mold closing, the positioning rod 15 is pulled out, and the upper mold 2 is opened. Then, the inner shoe mold 7 is taken out from the molding cavity through the handle 16. Finally, the molded sole is removed from the inner shoe mold 7 to complete the entire production process.

[0065] By adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0066] By setting a flip-up cover plate 5 on the upper side of the upper mold 2, the positioning structure on the upper mold 2 can be accommodated by the cover plate 5. The requirements for matching with the molding equipment can be met without increasing the thickness of the upper mold 2. The thickness of both the cover plate 5 and the upper mold 2 is designed to be relatively thin, which greatly reduces the overall weight of the upper mold 2. The operator can easily pull the lifting ring 20 to complete the flip-opening and closing operation of the cover plate 5 and the upper mold 2, which reduces labor intensity and reduces wear on the hinge parts, thus extending the service life of the mold.

[0067] The precise mold closing of the upper mold 2 and the lower mold 1 is achieved through the cooperation of the positioning pin 18 and the positioning hole 19; the precise positioning of the inner shoe mold 7 and the upper mold 2 is achieved through the cooperation of the positioning part 9 with the positioning groove 11, the positioning ring 13, the positioning ring 14 and the positioning rod 15; and the sealing cooperation of the sealing surface 8 and the sealing surface 10 prevents the overflow of the blank material during the molding process. The synergistic effect of the multiple positioning and sealing structures ensures the molding accuracy of the shoe sole and improves the product qualification rate.

[0068] The handle 16 facilitates the lifting and unloading of the inner shoe mold 7, the observation port 17 facilitates the operator to check the assembly status of each component, and the lifting ring 20 facilitates the opening and closing of the mold. The overall structural design fits the actual production needs and improves production efficiency.

[0069] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A three-layer shoe sole molding die, comprising a lower die and an upper die, wherein the upper side of the lower die has a lower cavity, the lower side of the upper die has an upper cavity, and the upper side of the upper die has a positioning structure, characterized in that: The upper side of the upper mold is connected to a cover plate, and the lower side of the cover plate is provided with a groove to accommodate the positioning structure.

2. The three-layer shoe sole forming mold according to claim 1, characterized in that: It also includes an inner shoe mold set in the lower cavity and the upper cavity, the upper side of the inner shoe mold is provided with an annular sealing surface, and the upper side of the inner shoe mold is provided with an upwardly protruding positioning part; The side wall of the upper cavity is provided with a second sealing surface that seals with the first sealing surface. The upper mold is provided with a positioning groove that passes through its upper side and connects to the upper cavity. The positioning groove is located inside the sealing surface two, and the positioning part is adapted to connect with the positioning groove. The positioning structure includes a positioning ring and a limiting strip. The limiting strip is fixedly set on the upper side of the upper mold and is used to limit the upward movement of the inner shoe mold. The positioning ring includes a positioning ring one set on the positioning part and a positioning ring two set on the upper mold, and also includes a positioning rod inserted into the positioning ring one and the positioning ring two.

3. The three-layer shoe sole forming mold according to claim 2, characterized in that: The upper side of the positioning part is provided with a handle, which is located in the groove.

4. The three-layer shoe sole forming mold according to claim 1, characterized in that: The cover plate is provided with observation ports that extend through its upper and lower sides.

5. The three-layer shoe sole forming mold according to claim 1, characterized in that: The lower mold, upper mold, and cover plate are all rectangular plate structures.

6. The three-layer shoe sole forming mold according to claim 2, characterized in that: The outer side wall of the inner shoe mold is spaced apart from the inner side walls of the upper and lower cavities.

7. The three-layer shoe sole forming mold according to claim 1, characterized in that: The lower mold has a positioning post on its upper side and a positioning hole on its lower side that is connected to the positioning post.

8. The three-layer shoe sole forming mold according to claim 2, characterized in that: The front sides of the upper mold, lower mold, and cover plate are each connected to a lifting ring.

9. A three-layer shoe sole forming mold according to claim 1, characterized in that: The rear side of the lower mold and the rear side of the upper mold are rotatably connected.

10. A three-layer shoe sole forming mold according to claim 1, characterized in that: The rear side of the cover plate and the rear side of the upper mold are rotatably connected.

Images