A forming mold and a forming method

Abstract

The present application discloses a molding mold and a molding method, wherein the molding mold comprises a mold body, a material cup and a material pressing assembly, wherein a cavity for molding raw materials is formed in the mold body, the mold body comprises a first surface, a mounting groove is provided in the first surface, and a feed channel is provided in the mold body, one end of the feed channel is connected to the mounting groove, and the other end is connected to the molding cavity; the material cup is detachably arranged in the mounting groove, and the material cup has a accommodating cavity for containing raw materials; the material cup has an opening portion and a discharge channel respectively connected to the accommodating cavity, and when the material cup is located in the mounting groove, the discharge channel is connected to the feed channel; the material pressing assembly and the first surface of the mold body are arranged relative to each other along a first direction, the material pressing assembly and the mold body can move relatively close to each other along the first direction, and a part of the material pressing assembly can enter the accommodating cavity of the material cup through the opening of the material cup to apply pressure to the raw materials, and the raw materials enter the molding cavity through the discharge channel and the feed channel.

Description

Technical Field

[0001] The present application relates to the technical field of electroacoustic products, and more specifically, to a molding die and a molding method. Background Art

[0002] Fluororubber refers to a synthetic polymer elastomer containing fluorine atoms on the carbon atoms of the main chain or side chain. Fluororubber (FKM) is resistant to high temperatures, oils, and a variety of chemicals, and is an indispensable material for cutting-edge science and technology such as modern aviation, missiles, rockets, and space travel. In addition, compared with other materials, fluororubber can provide better visual and tactile effects, is comfortable to wear, and is durable; therefore, in recent years, fluororubber materials have been increasingly used in wearable fields such as smart watches and AR / VR.

[0003] Most of the molding processes for injection-grade fluororubber materials are hot pressing processes. At present, in the prior art, the molding process for fluororubber materials faces at least the following problems: the fluororubber material needs to be shaped like the product, that is, the fluororubber material needs to be made into a fixed shape before hot pressing, so a set of special cutting tools is needed to cut the fluororubber material; this will not only generate a lot of waste, resulting in low material utilization; but also the process route is long, the process difficulty and production cost are high, and the production efficiency is low.

[0004] In view of this, it is necessary to provide a new technical solution to solve the above technical problems. Summary of the invention

[0005] One purpose of the present application is to provide a new technical solution for a molding die and a molding method.

[0006] According to a first aspect of the present application, a molding die is provided, comprising:

[0007] A mold body, wherein a mold cavity for molding a raw material is formed in the mold body, the mold body has a first surface, the first surface is provided with a mounting groove, and a feed channel is provided in the mold body, one end of the feed channel is connected to the mounting groove, and the other end is connected to the mold cavity;

[0008] A material cup, the material cup is detachably arranged in the mounting groove, the material cup has a containing cavity for containing raw materials; the material cup has an opening and a material discharge channel respectively connected with the containing cavity, and when the material cup is located in the mounting groove, the material discharge channel is connected with the material feed channel;

[0009] A material pressing assembly, wherein the material pressing assembly and the first surface of the mold body are arranged relative to each other along a first direction, the material pressing assembly and the mold body can move relatively close to each other along the first direction, and a part of the material pressing assembly can enter the accommodating cavity of the material cup through the opening of the material cup to apply pressure to the raw material, and the raw material enters the mold cavity through the discharge channel and the feed channel.

[0010] Optionally, the pressing assembly is fixedly arranged, and the mold body can move toward or away from the pressing assembly along a first direction.

[0011] Optionally, the mold body includes a front mold core and a rear mold core, the pressing assembly is arranged opposite to the front mold core, and the rear mold core is arranged on the side of the front mold core away from the pressing assembly; the front mold core and the rear mold core have a mutual abutment state and a mutual separation state.

[0012] Optionally, the pressing assembly includes a seat plate and a pressing block, the seat plate is arranged opposite to the front mold core, and the pressing block is connected to a side of the seat plate facing the front mold core; a part of the pressing block can enter the accommodating cavity of the material cup through the opening of the material cup.

[0013] Optionally, the molding die further comprises a pressing cover, which is arranged in the accommodating cavity of the material cup, and has a first pressing surface and a second pressing surface arranged opposite to each other, the first pressing surface is used to abut against the raw material in the accommodating cavity, and the second pressing surface is used to abut against the pressing block; at least the area of ​​the first pressing surface in the pressing cover is larger than the cross-sectional area of ​​the pressing block.

[0014] Optionally, the side surface of the pressure cover is in contact with the inner wall of the material cup.

[0015] Optionally, the molding die further comprises a distance sliding rod, on which a sliding hole extending along a first direction is formed; a sliding column is connected to the front mold core, the distance sliding rod is fixedly connected to the seat plate, and the sliding column is slidably connected to the sliding hole.

[0016] Optionally, there are at least two mounting grooves, and one material cup is disposed in each mounting groove.

[0017] Optionally, the first surface is provided with an avoidance gap next to the mounting groove, and an external grabbing device can enter the mounting groove through the avoidance gap to grab the material cup.

[0018] Optionally, a positioning member is provided between the front mold core and the rear mold core, and when the front mold core and the rear mold core switch from a state of being separated from each other to a state of being abutted against each other, the positioning member is used to align the front mold core with the rear mold core.

[0019] According to a second aspect of the present application, a molding method is provided, which uses the molding mold as described in the first aspect, and the method comprises:

[0020] The raw material is placed in the containing cavity of the material cup, and the material cup containing the raw material is installed in the installation groove of the mold body;

[0021] The mold body and the material pressing assembly move relatively close to each other, and a part of the material pressing assembly enters the containing cavity of the material cup through the opening of the material cup to apply pressure to the raw material;

[0022] The raw material enters the mold cavity through the discharge channel and the feed channel under pressure and fills the mold cavity;

[0023] The raw materials undergo a vulcanization reaction under vulcanization conditions, and the product is formed after the vulcanization reaction is completed.

[0024] Optionally, the temperature of the vulcanization reaction is 150-180°C, the time of the vulcanization reaction is 5-10 minutes, and the pressure value of the raw material during the vulcanization reaction is 80-100 kgf / cm 2 .

[0025] The use of the molding die provided in the embodiment of the present application has no fixed requirements for the shape of the raw material, and the utilization rate of the raw material is high and the waste is small. In addition, since the material cup and the mounting groove are detachably connected, when a product molding cycle is completed, the used material cup can be taken out of the mounting groove and replaced with a new material cup filled with raw materials for the next product molding cycle; such a process flow is more compact and has higher production efficiency.

[0026] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0028] Figure 1 Shown is a schematic diagram of the exploded structure of a molding die of the present application;

[0029] Figure 2 The figure shows a cross-sectional structure diagram of a molding die of the present application. Figure 1 ;

[0030] Figure 3 The figure shows a cross-sectional structure diagram of a molding die of the present application. Figure 2 ;

[0031] Figure 4The figure shows a cross-sectional structure diagram of a molding die of the present application. Figure 3 ;

[0032] Figure 5 The figure shows a cross-sectional structural schematic diagram of a material cup in a forming mold of the present application;

[0033] Figure 6 Shown is a schematic cross-sectional structure diagram of a material cup and a pressure cover in a forming mold of the present application.

[0034] Description of reference numerals:

[0035] 1. Mold body; 11. Front mold core; 12. Back mold core; 100. Cavity; 101. First surface; 102. Mounting groove; 103. Feed channel; 104. Avoidance gap; 105. Cavity groove; 2. Material cup; 201. Discharge channel; 3. Pressing assembly; 31. Seat plate; 32. Pressing block; 4. Pressing cover; 5. Fixed distance slide rod; 51. Sliding hole; 6. Sliding column; 7. Positioning piece; 01. Raw material; 02. Robot arm. DETAILED DESCRIPTION

[0036] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0037] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

[0038] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0039] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0040] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0041] Reference Figure 1-Figure 6As shown, according to one embodiment of the present application, a molding mold is provided, including a mold body 1, wherein a cavity 100 for molding a raw material is formed in the mold body 1, the mold body 1 has a first surface 101, the first surface 101 is provided with a mounting groove 102, and a feed channel 103 is provided in the mold body 1, one end of the feed channel 103 is connected to the mounting groove 102, and the other end is connected to the cavity 100, that is, the bottom of the mounting groove 102 is connected to the feed channel 103; and further comprising a material cup 2 and a material pressing assembly 3, wherein the material cup 2 is detachably arranged in the mounting groove 102, and the material cup 2 has a material for holding the material. A holding cavity for raw materials; the material cup 2 has an opening portion and a discharge channel 201 respectively connected to the holding cavity, and when the material cup 2 is located in the mounting groove 102, the discharge channel 201 is connected to the feed channel 103; the pressing component 3 and the first surface 101 of the mold body 1 are arranged relatively to each other along a first direction, and the pressing component 3 and the mold body 1 can move relatively close to each other along the first direction, and a part of the pressing component 3 can enter the holding cavity of the material cup 2 through the opening portion of the material cup 2 to apply pressure to the raw materials, and the raw materials enter the mold cavity 100 through the discharge channel 201 and the feed channel 103.

[0042] When the molding mold provided by the embodiment of the present application is used, the raw material 01 (the raw material is, for example, fluorine rubber that has been refined) is loaded into the material cup 2, and then the material cup 2 is installed in the installation groove 102 opened on the mold body 1. The mold body 1 and the material pressing component 3 are moved relatively close to each other, and a part of the material pressing component 3 enters the containing cavity of the material cup 2 through the opening of the material cup 2 to apply pressure to the raw material; under the action of pressure, the raw material enters the cavity 100 from the bottom of the installation groove 102 through the discharge channel 201 and the feed channel 103 and fills the cavity 100; the raw material undergoes a vulcanization reaction under certain vulcanization conditions, and a product is formed after the vulcanization reaction is completed.

[0043] In the above process, firstly, the fluororubber raw material that has been refined does not need to be made into a special shape of the contoured product, but only needs to be able to be loaded into the accommodating cavity of the material cup 2; that is, there is no fixed requirement for the shape of the raw material, the utilization rate of the raw material is high, and the waste is less. In addition, since the material cup 2 and the mounting groove 102 are detachably connected, when a product molding cycle is completed, the used material cup 2 can be taken out of the mounting groove 102 and replaced with a new material cup filled with raw materials for the next product molding cycle; such a process flow is more compact and has higher production efficiency.

[0044] In one embodiment, the pressing assembly 3 is fixedly arranged, and the mold body 1 can move toward or away from the pressing assembly 3 along a first direction.

[0045] In this specific example, the pressing assembly 3 is fixedly installed together with the hot press tooling, and the pressing assembly 3 always remains in a fixed state; when the mold needs to be closed, the mold body 1 moves toward the pressing assembly 3 along the first direction and finally abuts against the pressing assembly 3, and a part of the pressing assembly 3 enters the containing cavity of the material cup 2 through the opening of the material cup 2 to apply pressure to the raw material.

[0046] Reference Figure 1-Figure 4 As shown, in one embodiment, the mold body 1 includes a front mold core 11 and a rear mold core 12, the pressing assembly 3 is arranged opposite to the front mold core 11, and the rear mold core 12 is arranged on the side of the front mold core 11 away from the pressing assembly 3; the front mold core 11 and the rear mold core 12 have a mutual abutment state and a mutual separation state.

[0047] In this specific example, the mold body 1 specifically includes a front mold core 11 and a rear mold core 12 which are arranged relatively along a first direction; wherein the pressing assembly 3 is specifically arranged relatively to the front mold core 11, and the first surface 101 is the surface of the front mold core 11 facing the pressing assembly 3. The mounting groove 102 and the feed channel 103 are both provided on the front mold core 11. The rear mold core 12 is provided on the side of the front mold core 11 away from the pressing assembly 3, and a cavity groove 105 is provided on the surface of the rear mold core 12 facing the front mold core 11. When the front mold core 11 and the rear mold core 12 are in a state of abutting each other, a cavity 100 for raw material molding is formed between the cavity groove 105 and the surface of the front mold core 11 facing the rear mold core 12. When the product needs to be taken out from the mold body 1 after being formed, the front mold core 11 and the rear mold core 12 are moved relatively away from each other and are in a state of being separated from each other, that is, the product can be taken out from the cavity 100. Optionally, the rear mold core 12 is connected to a power source, and the power source can be, for example, a cylinder. When the mold needs to be closed, the rear mold core 12 is driven by the oil cylinder to lift the front mold core 11 and move toward the pressing assembly 3.

[0048] Reference Figure 2 As shown, in one embodiment, the pressing assembly 3 includes a seat plate 31 and a pressing block 32, the seat plate 31 is arranged opposite to the front mold core 11, and the pressing block 32 is connected to the side of the seat plate 31 facing the front mold core 11; a part of the pressing block 32 can enter the accommodating cavity of the material cup 2 through the opening of the material cup 2.

[0049] In this specific example, for example, the base plate 31 is fixedly installed with the hot press tooling, and the pressing block 32 is installed on the base plate 31 and the pressing block 32 is arranged toward the front mold core 11. Optionally, the pressing block 32 can be installed on the base plate 31 by fasteners such as bolts. When the molding die is closed, a part of the pressing block 32 enters the containing cavity of the material cup 2 through the opening of the material cup 2 to apply pressure to the raw material. Therefore, the position of the pressing block 32 corresponds to the position of the mounting groove 102, and the size of the pressing block 32 needs to be able to enter the material cup 2.

[0050] Reference Figure 1-Figure 5 As shown, in one embodiment, the molding die further includes a pressing cover 4, which is disposed in the accommodating cavity of the material cup 2, and has a first pressing surface and a second pressing surface disposed opposite to each other, wherein the first pressing surface is used to abut against the raw material in the accommodating cavity, and the second pressing surface is used to abut against the pressing block 32; at least the area of ​​the first pressing surface in the pressing cover 4 is larger than the cross-sectional area of ​​the pressing block 32.

[0051] In this specific example, a pressure cap 4 is used to be arranged in the accommodating cavity of the material cup 2 to directly contact and press the raw material in the material cup. During the mold closing process, the pressure cap 4 moves toward the material pressing assembly 3 together with the material cup 2 following the mold body 1. After the pressure cap 4 abuts against the pressing block 32, the mold body 1 continues to move toward the material pressing assembly 3, and the pressure cap 4 applies pressure to the pressing block 32. At the same time, the reaction force of the pressing block 32 on the pressure cap 4 causes the pressure cap 4 to press the raw material in the material cup 2, so that the raw material is pressed out of the material cup 2 through the discharge channel 201 and then enters the mold cavity 100 through the feed channel 103. Since the area of ​​the first pressing surface of the pressure cap 4 for pressing the raw material is large, the pressure cap 4 can press the raw material more comprehensively, provide more uniform pressure for the raw material, and make the raw material pressed out of the material cup more smoothly.

[0052] In one embodiment, the side surface of the pressing cover 4 fits with the inner wall of the material cup 2 .

[0053] In this specific example, the shape and size of the pressure cover 4 completely match the accommodating cavity of the material cup 2, and the pressure cover 4 is tightly fitted in the accommodating cavity of the material cup 2. When the pressure cover 4 slides along the inner wall of the material cup 2 and presses the raw materials, the pressure cover 4 applies a force similar to that of a needle injection to the raw materials, ensuring that all the raw materials can be pressed out of the material cup 2.

[0054] Reference Figure 1-Figure 4 As shown, in one embodiment, the molding mold also includes a distance sliding rod 5, and a sliding hole 51 extending along the first direction is opened on the distance sliding rod 5; a sliding column 6 is connected to the front mold core 11, and the distance sliding rod 5 is fixedly connected to the seat plate 31, and the sliding column 6 is slidably connected to the sliding hole 51.

[0055] In this specific example, the distance slide bar 5 is installed on the seat plate 31. Optionally, the distance slide bar 5 can be installed using fasteners such as bolts. Figure 2-Figure 4 In the direction of the back mold core 12, the oil cylinder drives the rear mold core 12 to move upward, and the rear mold core 12 pushes the front mold core 11 upward to move close to the pressing assembly 3. During this process, the slide column 6 slides upward along the slide hole 51. When the product needs to be taken out from the mold body 1 after the product is formed, the oil cylinder drives the rear mold core 12 to move downward, and the front mold core 11 retreats with the rear mold core 12 to move away from the pressing assembly 3. During this process, the slide column 6 slides downward along the slide hole 51. When it slides to the limit position, refer to Figure 4 As shown, the slide column 6 is blocked by the bottom of the slide hole 51 and cannot continue to slide, thereby fixing the position of the front mold core 11. Then the rear mold core 12 continues to move downward under the driving action of the cylinder, thereby achieving the separation state between the rear mold core 12 and the front mold core 11, that is, the mold body 1 is opened, so that the product can be taken out.

[0056] Optionally, two distance sliding rods 5 can be provided, and the two distance sliding rods 5 can be arranged opposite to each other or adjacent to each other. Correspondingly, two sliding posts 6 are also provided.

[0057] Reference Figure 1 As shown, in one embodiment, the number of the mounting grooves 102 is at least two, and one material cup 2 is disposed in each of the mounting grooves 102 .

[0058] In this specific example, in each product molding cycle, the number of material cups 2 participating in the material loading and pressing is at least two, so that the raw materials in at least two material cups 2 can be pressed at the same time, thereby improving the efficiency of the raw materials entering the mold cavity 100; and the raw materials can enter the mold cavity 100 from different directions, so that the raw materials are more evenly filled in the mold cavity 100, and it is very beneficial to fill the raw materials of products with complex structures. It can be understood that the number of the pressure caps 4 and the number of the pressing blocks 32 are matched and corresponding to the number of the material cups 2.

[0059] Reference Figure 6 As shown, in one embodiment, the first surface 101 is provided with an avoidance gap 104 beside the installation groove 102 , and an external grabbing device can enter the installation groove 102 through the avoidance gap 104 to grab the material cup 2 .

[0060] In this specific example, the setting of the avoidance gap 104 can facilitate the robot 02 to enter the installation groove 102 to grab the material cup 2, thereby realizing the automatic picking and placing action of the material cup 2 and improving the automation degree of the molding mold.

[0061] Reference Figure 1As shown, in one embodiment, a positioning member 7 is provided between the front mold core 11 and the rear mold core 12, and when the front mold core 11 and the rear mold core 12 switch from a state of separation to a state of abutment, the positioning member 7 is used to align the front mold core 11 and the rear mold core 12.

[0062] In this specific example, the arrangement of the positioning member 7 can ensure the precise alignment of the front mold core 11 and the rear mold core 12 , thereby avoiding the occurrence of misalignment between the front mold core 11 and the rear mold core 12 .

[0063] According to another embodiment of the present application, a molding method is provided, which uses the molding die as described above, referring to Figure 2 As shown, the method includes:

[0064] S1, placing raw materials in the containing cavity of the material cup 2, and installing the material cup 2 containing the raw materials in the installation groove 102 of the mold body 1;

[0065] Optionally, the material cup 2 can be installed in the installation groove 102 by a six-axis robot.

[0066] S2, the mold body 1 and the material pressing assembly 3 move relatively close to each other, and a part of the material pressing assembly 3 enters the containing cavity of the material cup 2 through the opening of the material cup 2 to apply pressure to the raw material;

[0067] Optionally, the pressing assembly 3 is fixed, and the mold body 1 moves toward the pressing assembly 3 to achieve mold closing.

[0068] S3, the raw material enters the mold cavity 100 through the discharge channel 201 and the feed channel 103 under pressure and fills the mold cavity 100;

[0069] S4. The raw materials undergo a vulcanization reaction under vulcanization conditions, and the product is formed after the vulcanization reaction is completed.

[0070] Optionally, the temperature of the vulcanization reaction is 150-180°C, the time of the vulcanization reaction is 5-10 minutes, and the pressure value of the raw material during the vulcanization reaction is 80-100 kgf / cm 2 .

[0071] The molding method provided in the embodiment of the present application can achieve higher molding efficiency and molding accuracy, and the refined fluororubber raw material does not need to be made into a special shape of a contoured product, but only needs to be able to be loaded into the accommodating cavity of the material cup 2; that is, there is no fixed requirement for the shape of the raw material, the utilization rate of the raw material is higher, and the waste is less.

[0072] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for illustration, not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A molding die, characterized in that: include: A mold body (1), wherein a mold cavity (100) for molding a raw material is formed in the mold body (1), the mold body (1) has a first surface (101), the first surface (101) is provided with a mounting groove (102), and a feed channel (103) is provided in the mold body (1), one end of the feed channel (103) is connected to the mounting groove (102), and the other end is connected to the mold cavity (100); A material cup (2), the material cup (2) being detachably arranged in the mounting groove (102), the material cup (2) having a containing cavity for containing raw materials; the material cup (2) having an opening and a material discharge channel (201) respectively connected to the containing cavity, and when the material cup (2) is located in the mounting groove (102), the material discharge channel (201) is connected to the material feed channel (103); A material pressing component (3), wherein the material pressing component (3) and the first surface (101) of the mold body (1) are arranged relative to each other along a first direction, the material pressing component (3) and the mold body (1) can move relatively close to each other along the first direction, and a part of the material pressing component (3) can enter the accommodating cavity of the material cup (2) through the opening of the material cup (2) to apply pressure to the raw material, and the raw material enters the mold cavity (100) through the discharge channel (201) and the feed channel (103); the first surface (101) is provided with an avoidance notch (104) next to the installation groove (102), and an external grasping device can enter the installation groove (102) through the avoidance notch (104) to grasp the material cup (2).

2. The molding die according to claim 1, characterized in that: The pressing component (3) is fixedly arranged, and the mold body (1) can move toward or away from the pressing component (3) along a first direction.

3. The molding die according to claim 1 or 2, characterized in that: The mold body (1) comprises a front mold core (11) and a rear mold core (12); the pressing assembly (3) is arranged opposite to the front mold core (11); and the rear mold core (12) is arranged on a side of the front mold core (11) away from the pressing assembly (3); the front mold core (11) and the rear mold core (12) are in a mutually abutting state and a mutually separated state.

4. The molding die according to claim 3, characterized in that: The pressing assembly (3) comprises a base plate (31) and a pressing block (32); the base plate (31) is arranged opposite to the front mold core (11); the pressing block (32) is connected to a side of the base plate (31) facing the front mold core (11); a part of the pressing block (32) can enter the accommodating cavity of the material cup (2) through the opening of the material cup (2).

5. The molding die according to claim 4, characterized in that: The molding die further comprises a pressing cover (4), wherein the pressing cover (4) is arranged in the accommodating cavity of the material cup (2), and the pressing cover (4) comprises a first pressing surface and a second pressing surface arranged opposite to each other, wherein the first pressing surface is used to abut against the raw material in the accommodating cavity, and the second pressing surface is used to abut against the pressing block (32); at least the area of ​​the first pressing surface in the pressing cover (4) is larger than the cross-sectional area of ​​the pressing block (32).

6. The molding die according to claim 5, characterized in that: The side surface of the pressure cover (4) fits the inner wall of the material cup (2).

7. The molding die according to claim 4, characterized in that: The molding die further comprises a distance sliding rod (5), the distance sliding rod (5) is provided with a sliding hole (51) extending along a first direction; a sliding column (6) is connected to the front mold core (11), the distance sliding rod (5) is fixedly connected to the seat plate (31), and the sliding column (6) is slidably matched with the sliding hole (51).

8. The molding die according to claim 1, characterized in that: The number of the mounting grooves (102) is at least two, and one material cup (2) is arranged in each mounting groove (102).

9. The molding die according to claim 3, characterized in that: A positioning member (7) is provided between the front mold core (11) and the rear mold core (12); when the front mold core (11) and the rear mold core (12) are switched from a state of being separated from each other to a state of being in contact with each other, the positioning member (7) is used to align the front mold core (11) and the rear mold core (12).

10. A molding method, characterized in that: Using the molding die according to any one of claims 1 to 9, the method comprises: Filling the material in the containing cavity of the material cup (2), and installing the material cup (2) filled with the material in the installation groove (102) of the mold body (1); The mold body (1) and the material pressing assembly (3) move relatively close to each other, and a portion of the material pressing assembly (3) enters the containing cavity of the material cup (2) through the opening of the material cup (2) to apply pressure to the raw material; The raw material enters the mold cavity (100) through the discharge channel (201) and the feed channel (103) under pressure and fills the mold cavity (100); The raw materials undergo a vulcanization reaction under vulcanization conditions, and the product is formed after the vulcanization reaction is completed.

11. The molding method according to claim 10, characterized in that: The temperature of the vulcanization reaction is 150-180°C, the time of the vulcanization reaction is 5-10 minutes, and the pressure value of the raw material during the vulcanization reaction is 80-100 kgf / cm 2 .

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