A shoe sole mold facilitating demolding

Abstract

The utility model relates to the technical field of mould manufacturing, disclose a sole mould convenient to demould, including pressing shell, fixed in the handle of pressing shell outside and mould assembly in the inside, still include rotating mechanism, the rotating mechanism includes rotating plate no.

Description

Technical Field

[0001] This utility model relates to the field of mold manufacturing technology, and in particular to a shoe sole mold that is easy to demold. Background Technology

[0002] Shoe sole molds are an indispensable key piece of equipment in the shoe manufacturing industry. Their main function is to mold materials such as rubber or EVA into specific shoe sole shapes by closing and pressing the upper and lower molds. In actual production, in order to ensure production efficiency, the mold needs to be opened and closed at a high frequency. This requires the connecting hinge parts of the mold to have extremely high stability and durability to ensure that each closure is precisely aligned and each opening is smooth and unobstructed.

[0003] However, existing shoe sole molds typically use simple pin hinges to connect the upper and lower molds. Due to the harsh environment of the molding workshop and the heavy weight of the mold itself, the simple pin structure is prone to severe wear under long-term rotational friction. This wear not only causes the hinge to loosen, resulting in misalignment when the upper and lower molds close, producing defective products such as "overflow," but more seriously, the metal shavings and rough surfaces generated by the wear cause a sharp increase in mold opening resistance, and may even cause jamming. When workers try to open the mold to remove the molded shoe sole, they often need to expend a lot of force or even use tools to pry it open. This not only greatly reduces the demolding efficiency, but also easily damages the newly formed shoe sole due to improper operation, seriously affecting the pass rate of the finished product.

[0004] Therefore, this utility model proposes a shoe sole mold that is easy to demold, in order to overcome the shortcomings of the prior art. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a shoe sole mold that facilitates demolding. It aims to improve the existing shoe sole molds where the hinge connection structure mostly adopts a simple pin joint. During long-term high-frequency opening and closing, it is prone to severe wear due to sliding friction, which leads to mold opening and closing jamming, increased resistance, or even jamming. This not only reduces demolding efficiency but also easily causes misalignment between the upper and lower molds, affecting the quality of the finished product.

[0006] This utility model provides a shoe sole mold that is easy to demold, comprising: a pressing shell, a handle fixedly connected to the outside of the pressing shell, and a mold assembly installed inside the pressing shell; and a rotating mechanism.

[0007] The rotating mechanism features a multi-layered nested bearing structure that converts sliding friction into rolling friction.

[0008] Furthermore, the pressing shell and the rotating mechanism are combined through a specific mechanical connection. Specifically, the rotating mechanism includes a first rotating plate, a second rotating plate, and a rotating shaft. Both the first rotating plate and the second rotating plate are rotatably connected to the outer wall of the rotating shaft. An outer ring is fixedly connected to the outer side of each of the first and second rotating plates, and a sliding ring is fixedly connected to the inner wall of the outer ring. A limit ring is provided inside the sliding ring, and a sliding ball is slidably connected inside the sliding ring, with the sliding ball being limited and connected to the inside of the sliding ring by the limit ring. An inner sliding ring is rotatably connected to the outer wall of the rotating shaft, and the bottom of the sliding ball rolls in contact with the top of the inner sliding ring.

[0009] Preferably, a wear-resistant ring is provided between the first rotating plate and the second rotating plate. The wear-resistant ring is sleeved on the outer wall of the rotating shaft, and the two sides of the wear-resistant ring abut against the first rotating plate and the second rotating plate, respectively. The structure is used to bear and offset the axial lateral force and prevent direct friction and wear between the rotating plates.

[0010] Preferably, the mold assembly includes a first mold installed on the bottom surface inside the pressing shell and a second mold installed on the top surface inside the pressing shell. The first mold and the second mold are aligned and cooperate with each other when the pressing shell is closed to ensure the accuracy of the sole forming.

[0011] Preferably, the first rotating plate is fixedly connected to the lower half of the pressing shell, and the second rotating plate is fixedly connected to the upper half of the pressing shell, thereby realizing the relative rotational opening and closing of the upper and lower parts of the pressing shell.

[0012] Preferably, the surface of the pressing shell is provided with a protective mechanism, which includes a protective layer, a heat insulation layer, an inner layer and an outer layer from the inside out, thereby improving the overall performance of the mold through a multi-layer composite structure.

[0013] Preferably, the protective layer is located at the innermost side of the protective mechanism and forms the pressing shell base. The protective layer is made of high-speed steel to provide high hardness and structural strength under high temperature conditions.

[0014] Preferably, the heat insulation layer is fixedly connected to the outer surface of the protective layer, and the heat insulation layer is made of Hastelloy alloy to block heat transfer and protect the safety of operators.

[0015] Preferably, the inner layer is fixedly connected to the outer surface of the heat insulation layer, and the inner layer is made of martensitic aging steel, which utilizes its high toughness to absorb the impact force of opening and closing.

[0016] Preferably, the outer layer is fixedly connected to the outer surface of the inner layer and forms the outermost surface of the pressing shell. The outer layer is made of polytetrafluoroethylene, which utilizes its extremely low surface energy to achieve an anti-sticking and demolding effect.

[0017] This utility model has the following beneficial effects: 1. This utility model, by setting up a rotating mechanism, utilizes the nested cooperation of the outer ring, the sliding ring and the inner sliding ring, and the sliding ball constrained by the limiting ring, to transform the traditional sliding friction between rotating plate one and rotating plate two into rolling friction. This solves the problem of severe wear, rotational jamming or even jamming at the hinge of the shoe sole mold caused by long-term high-frequency opening and closing in the prior art. It achieves the technical effect of smooth and stable mold opening action, significantly extending the service life of the mold and helping to improve demolding efficiency.

[0018] 2. This utility model solves the problem of large lateral friction and easy axial wobbling in the rotating shaft assembly, which leads to misalignment of the upper and lower molds, by setting a wear-resistant ring between rotating plate one and rotating plate two in the prior art. It achieves the technical effect of absorbing lateral wear, ensuring the mold closing accuracy, and thus improving the quality of the finished shoe sole.

[0019] 3. This utility model solves the problems of mold shells being prone to deformation due to high temperature, lack of heat insulation protection, and easy adhesion of shoe sole materials to the surface by setting a protective mechanism on the surface of the pressing shell and using a composite structure of a high-speed steel protective layer, a Hastelloy heat insulation layer, a martensitic aging steel inner layer, and a polytetrafluoroethylene outer layer from the inside out. It achieves a comprehensive technical effect of maintaining the high-temperature strength and toughness of the shell, effectively insulating and protecting the operator, and using the self-lubricating properties of the outer layer to achieve quick demolding of the shoe sole without adhesion. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of a shoe sole mold that is easy to demold, as proposed in this utility model; Figure 2 This is a schematic diagram of the handle structure of a shoe sole mold that facilitates demolding, as proposed in this utility model. Figure 3 This is a schematic diagram of the outer ring structure of a shoe sole mold that facilitates demolding, as proposed in this utility model. Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the protective layer structure of a shoe sole mold that facilitates demolding, as proposed in this utility model.

[0021] Legend: 1. Press the shell; 2. Mold components; 21. Mold 1; 22. Mold 2; 23. Handle; 3. Rotating mechanism; 31. Rotating plate one; 32. Rotating plate two; 33. Outer ring; 34. Sliding ring; 35. Limiting ring; 36. Inner sliding ring; 37. Sliding ball; 38. Rotating shaft; 39. Wear-resistant ring; 4. Protective mechanism; 41. Protective layer; 42. Insulation layer; 43. Inner layer; 44. Outer layer. Detailed Implementation

[0022] 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. Example

[0023] Reference Figures 1 to 5 This utility model provides a shoe sole mold that facilitates demolding, aiming to solve the problems in the prior art where the hinge of the shoe sole mold is severely worn due to long-term friction, causing jamming during opening and closing, which affects demolding efficiency and mold alignment accuracy.

[0024] like Figure 1 and Figure 2 As shown, the device includes a pressing shell 1 and a handle 23 fixedly connected to the outer surface of the pressing shell 1. The pressing shell 1 serves as the mounting base and supporting body of the entire device, providing space for mold installation and protection. The handle 23 provides a point of force for the operator to easily control the pressing shell 1 to open or close.

[0025] The press shell 1 is equipped with a mold assembly 2 for molding. The mold assembly 2 specifically includes a first mold 21 installed on the bottom surface inside the press shell 1 and a second mold 22 installed on the top surface inside the press shell 1. When the press shell 1 is in the closed state, the first mold 21 and the second mold 22 can be aligned and fitted together to form a mold cavity for shoe sole molding between them. By using the handle 23 to drive the various parts of the press shell 1 to separate, the first mold 21 and the second mold 22 will be separated to complete the demolding operation.

[0026] Reference Figure 3 and Figure 4The rotating mechanism 3 mainly consists of a first rotating plate 31, a second rotating plate 32, and a rotating shaft 38 located between them. The first rotating plate 31 is fixedly connected to the lower half of the pressing shell 1, and the second rotating plate 32 is fixedly connected to the upper half of the pressing shell 1. The first rotating plate 31 and the second rotating plate 32 are arranged sequentially along the axial direction of the rotating shaft 38, and the rotating shaft 38 passes through the first rotating plate 31 and the second rotating plate 32, providing the rotation axis for the entire mechanism. The outer walls of the first rotating plate 31 and the second rotating plate 32 are both fixedly connected to an outer ring 33. The outer ring 33 serves as a housing for carrying the internal bearing assembly, and its inner wall is fixedly connected to a sliding ring 34. The sliding ring 34 has an accommodating space inside, and multiple sliding balls 37 are evenly distributed circumferentially within the accommodating space. The outer wall of the sliding ball 37 maintains sliding contact with the inner wall of the sliding ring 34. A limiting ring 35 is embedded in the inner side wall of the sliding ring 34. The moving ball 37 is limited and engaged inside the sliding ring 34 by the limiting ring 35 to prevent the sliding ball 37 from falling off or undergoing excessive displacement during movement. At the same time, the outer wall of the rotating shaft 38 is rotatably connected to the inner sliding ring 36. There are two inner sliding rings 36, which are respectively sleeved at both ends of the rotating shaft 38 and located inside the space surrounded by the outer ring 33. The bottom of the sliding ball 37 maintains rolling contact with the top of the inner sliding ring 36. By clamping the sliding ball 37 between the inner sliding ring 36 and the sliding ring 34, rolling friction is used instead of traditional sliding friction, thereby significantly reducing the resistance during the opening and closing process. A wear-resistant ring 39 is also provided. The wear-resistant ring 39 is sleeved on the outer wall of the rotating shaft 38, and the two sides of the wear-resistant ring 39 are in rotatable contact with the sides of the rotating plate 1 31 and the rotating plate 2 32, respectively. Through the above-mentioned multi-level rotational engagement structure, high smoothness and high wear resistance are achieved in the mold opening and closing process.

[0027] Reference Figure 5The surface of the pressing shell 1 is provided with a protective mechanism 4. The protective mechanism 4 adopts a layered composite structure design, which includes a protective layer 41, a heat insulation layer 42, an inner layer 43, and an outer layer 44 from the inside out. The layers are tightly bonded together by high-temperature pressing or chemical bonding to form the shell wall of the pressing shell 1. The innermost protective layer 41 of the protective mechanism 4 is made of high-speed steel. High-speed steel has excellent red hardness and can maintain high hardness and wear resistance even in the high-temperature environment of mold forming, effectively preventing the pressing shell 1 from deforming due to repeated stress. The heat insulation layer 42 on the outside of the protective layer 41 is made of Hastelloy. Hastelloy not only has good corrosion resistance In addition to its performance, it also has a low thermal conductivity coefficient, which can effectively delay the outward diffusion of heat and play a role in heat insulation. The inner layer 43 located outside the heat insulation layer 42 is made of martensitic aging steel. Martensitic aging steel is known for its ultra-high strength and good toughness. It can effectively absorb the impact force generated when opening and closing the mold and prevent the shell from cracking. The outer layer 44 located outside the inner layer 43 and forming the outermost surface of the pressing shell 1 is made of polytetrafluoroethylene. Polytetrafluoroethylene has extremely low surface energy and excellent self-lubricating properties, making it difficult for the molded sole to adhere to its surface, thereby greatly reducing the demolding resistance. Together with the smooth opening and closing of the rotating mechanism 3, it achieves the technical effect of easy demolding.

[0028] The implementation principle of this application embodiment is as follows: when the staff needs to open the pressing shell 1 to take out the molded shoe sole, they hold the handle 23 to apply an upward opening force, which drives the upper part of the pressing shell 1 to rotate around the rotating mechanism 3. During this process, the rotating plate 1 31 and the rotating plate 2 32 rotate relative to each other.

[0029] Since the outer ring 33 and the sliding ring 34 rotate synchronously with the rotating plate, while the inner sliding ring 36 is relatively stationary or rotates at different angular velocities, the sliding ball 37 located between the sliding ring 34 and the inner sliding ring 36 begins to roll under the constraint of the limiting ring 35. The sliding ball 37 converts the sliding friction between the rotating plate 1 31 and the rotating plate 2 32 into rolling friction, which significantly reduces the resistance during rotation.

[0030] Meanwhile, during the rotation of the shaft 38, the top of the inner sliding ring 36 maintains rolling contact with the sliding ball 37, further alleviating mechanical wear. The wear-resistant ring 39 located between the rotating plate 1 31 and the rotating plate 2 32 bears and counteracts the axial lateral friction force. This multi-stage bearing structure ensures the smooth and stable opening process of the pressing shell 1, avoiding difficulties in mold opening caused by hinge jamming.

[0031] Once the mold is opened, the outermost layer 44 of the pressing shell 1 is made of polytetrafluoroethylene, which has excellent anti-stick properties. When the molded sole separates from the mold surface, there is almost no adhesion, and the staff can easily remove the sole without using additional pry bars or release agents, thus completing an efficient and convenient demolding operation.

Claims

1. A shoe sole mold for easy demolding, comprising: The pressing shell (1) and the handle (23) fixedly connected to the outside of the pressing shell (1) are provided with a mold assembly (2). Its features are, It also includes a rotating mechanism (3); The rotating mechanism (3) includes a rotating plate one (31), a rotating plate two (32) and a rotating shaft (38), wherein the rotating plate one (31) and the rotating plate two (32) are rotatably connected to the outer wall of the rotating shaft (38); The outer rings (33) are fixedly connected to the outer sides of the first rotating plate (31) and the second rotating plate (32), respectively. A sliding ring (34) is fixedly connected to the inner wall of the outer ring (33). A limiting ring (35) is provided inside the sliding ring (34). A sliding ball (37) is slidably connected inside the sliding ring (34), and the sliding ball (37) is limited and connected to the inside of the sliding ring (34) by the limiting ring (35). An inner sliding ring (36) is rotatably connected to the outer wall of the rotating shaft (38), and the bottom of the sliding ball (37) is in rolling contact with the top of the inner sliding ring (36).

2. The shoe sole mold for easy demolding according to claim 1, characterized in that, A wear-resistant ring (39) is provided between the first rotating plate (31) and the second rotating plate (32). The wear-resistant ring (39) is sleeved on the outer wall of the rotating shaft (38). The two sides of the wear-resistant ring (39) abut against the first rotating plate (31) and the second rotating plate (32) respectively.

3. The shoe sole mold for easy demolding according to claim 1, characterized in that, The mold assembly (2) includes a first mold (21) installed on the bottom surface inside the pressing shell (1) and a second mold (22) installed on the top surface inside the pressing shell (1). The first mold (21) and the second mold (22) are aligned and cooperate with each other when the pressing shell (1) is closed.

4. The shoe sole mold for easy demolding according to claim 1, characterized in that, The first rotating plate (31) is fixedly connected to the lower half of the pressing shell (1), and the second rotating plate (32) is fixedly connected to the upper half of the pressing shell (1).

5. A shoe sole mold for easy demolding according to claim 1, characterized in that, The surface of the pressing shell (1) is provided with a protective mechanism (4), which includes a protective layer (41), a heat insulation layer (42), an inner layer (43) and an outer layer (44) from the inside to the outside.

6. A shoe sole mold for easy demolding according to claim 5, characterized in that, The protective layer (41) is located at the innermost side of the protective mechanism (4) and forms the base of the pressing shell (1). The protective layer (41) is made of high-speed steel.

7. A shoe sole mold for easy demolding according to claim 5, characterized in that, The heat insulation layer (42) is fixedly connected to the outer surface of the protective layer (41), and the heat insulation layer (42) is made of Hastelloy.

8. A shoe sole mold for easy demolding according to claim 5, characterized in that, The inner layer (43) is fixedly connected to the outer surface of the heat insulation layer (42), and the inner layer (43) is made of martensitic aging steel.

9. A shoe sole mold for easy demolding according to claim 5, characterized in that, The outer layer (44) is fixedly connected to the outer surface of the inner layer (43) and forms the outermost surface of the pressing shell (1). The outer layer (44) is made of polytetrafluoroethylene.

Images