A mold for manufacturing a rubber product

Abstract

The application discloses a mold for rubber product manufacturing and relates to the technical field of rubber product production. The mold comprises a mouth mold and a pre-mouth mold. The mouth mold and the pre-mouth mold are assembled through a sealing mechanism. The upper portion of the pre-mouth mold is provided with an injection port which is communicated with the inside of the pre-mouth mold. The outside of the mouth mold is provided with a cooling mechanism. The cooling mechanism comprises an annular sleeve which is sleeved on the outside wall of the mouth mold. The inside of the annular sleeve is a hollow structure. An annular baffle is vertically arranged in the annular sleeve. The annular baffle divides the inside of the annular sleeve into two areas, namely a cooling cavity and a neutralizing cavity. The cooling cavity is close to the innermost side of the annular sleeve. When cold water is injected into the annular sleeve to cool the mold, the cold water in the cooling cavity can continuously flow back into the neutralizing cavity and be neutralized with the cold water. The temperature of the cooled water will not be too high, so that the cooling effect on the mold can be improved.

Description

Technical Field

[0001] This invention relates to the field of rubber product manufacturing technology, specifically to a mold for manufacturing rubber products. Background Technology

[0002] As rubber products are used more and more widely in various industries, the requirements for their quality and performance are also getting higher and higher. In the production process of rubber products, molds play a crucial role, directly affecting the shape, size and performance of the products. Therefore, it is of great significance to study new molds for manufacturing rubber products. Rubber products are generally composed of a combination of pre-die and die.

[0003] Current rubber product molds have the following defects:

[0004] 1. After the raw materials of rubber products are injected into the mold, they need to be cooled and molded. Currently, cooling is achieved by flowing cold water. However, when the cold water comes into contact with the mold, the high temperature of the mold causes the temperature of the cold water to rise, thereby reducing its cooling effect.

[0005] 2. During injection molding, the mold is prone to leakage due to sealing problems. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a mold for manufacturing rubber products, which solves the problems of poor cooling and sealing effects in traditional rubber product molds.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution: a mold for manufacturing rubber products, comprising a die and a pre-die, wherein the die and the pre-die are assembled by a sealing mechanism, and the upper part of the pre-die is provided with an injection port communicating with its interior, and the exterior of the die is provided with a cooling mechanism.

[0008] The cooling mechanism includes an annular sleeve fitted onto the outer wall of the die. The annular sleeve has a hollow interior and an annular baffle vertically arranged inside. The annular baffle divides the interior of the annular sleeve into two regions: a cooling chamber and a neutralizing chamber. The cooling chamber is located near the innermost side of the annular sleeve, and several annular baffles are arranged longitudinally at equal intervals inside the cooling chamber. Each annular baffle divides the cooling chamber into several small spaces. An inlet and a return hole are respectively arranged from bottom to top on one side of each small space. An annular baffle is arranged between the inlet and the return hole in the neutralizing chamber, and each annular baffle also divides the neutralizing chamber into several small spaces. A water inlet and a water outlet are respectively arranged on the upper and lower sides of the annular sleeve.

[0009] Preferably, both the inlet and outlet are connected to the interior of the neutralization chamber.

[0010] Preferably, there are several inlet holes and return holes that are equidistantly arranged, and each inlet hole and each return hole is distributed in a ring on the outer wall of the annular baffle.

[0011] Preferably, the annular baffle is made of ceramic.

[0012] Preferably, the inner wall of the injection port is provided with a limiting strip horizontally, and a turbine fan is provided at the lower part of one end of the limiting strip. The turbine fan is located at the central axis of the injection port, and each blade on the turbine fan is provided with a blade.

[0013] Preferably, the sealing mechanism includes an annular groove disposed on the upper part of the die and an annular slot disposed on the lower part of the pre-die. An annular positioning block is longitudinally slidably disposed inside the annular groove. By inserting the annular positioning block into the annular slot on the lower part of the pre-die, the die and the pre-die can be assembled, thereby achieving the functions of sealing and preventing misalignment.

[0014] Preferably, a water-swellable pad is fixedly provided at the bottom of the annular positioning block, and the bottom of the water-swellable pad is fixedly provided inside the lower side of the annular groove. An annular slit groove is provided at the upper part of the die located inside the annular positioning block, and a slurry inlet hole communicating with the inside of the annular groove is provided at the lower part of the inner wall of the annular slit groove.

[0015] Preferably, there are several equidistant slurry inlet holes, which are distributed in a ring on the inner wall of the annular slot groove, and the positions of the slurry inlet holes correspond to the positions of the water-expanding pads inside the annular groove.

[0016] Preferably, a limiting rod is connected to one side of the turbine fan above its blades, and a movable ball is connected to one end of the limiting rod. A movable rod is hinged to the inner wall of the injection port, and a fixed ball is connected to one end of the movable rod. One side of the movable rod is connected to the inner wall of the injection port by an elastic strip. When the limiting rod rotates once, the movable ball at one end of the limiting rod will collide with the fixed ball once.

[0017] This invention provides a mold for manufacturing rubber products, which has the following advantages compared with the prior art:

[0018] 1. When cold water is injected into the annular sleeve to cool the mold used for manufacturing rubber products, the cold water in the cooling chamber can continuously flow back into the neutralization chamber to neutralize with the cold water, so that the temperature of the cooling water will not be too high, thereby improving the cooling effect on the mold.

[0019] 2. The mold for manufacturing rubber products has a sealing mechanism. When slurry leakage occurs, the slurry first enters the annular groove through the annular slot and slurry inlet hole, and comes into contact with the water-expanding pad. This drives the annular positioning block to move, making it tightly fit the top side of the annular groove, thus preventing slurry leakage and achieving a good sealing effect. In addition, the annular positioning block inserted into the annular groove can also play a role in preventing misalignment, preventing the die and pre-die from affecting the quality of rubber product processing due to misalignment.

[0020] 3. When slurry is added to the injection port of this mold for manufacturing rubber products, the high-speed movement of the slurry drives the turbine fan to rotate, and the worm gear fan drives the blade to rotate. The blade can crush the clumps of slurry, thereby improving the quality of mold forming.

[0021] 4. The mold for manufacturing rubber products can cause the moving ball to continuously collide with the stationary ball when the worm gear fan rotates. Under the elasticity of the elastic strip, the stationary ball will quickly reset after being collided, thereby causing the injection port to vibrate and causing the raw material attached to the inner wall of the injection port to fall off. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a schematic diagram showing the disassembled structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the cooling mechanism of the present invention;

[0025] Figure 4 This is a schematic diagram of the injection port structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the connection structure between the die and the pre-die of the present invention;

[0027] Figure 6 This is a schematic diagram of the sealing mechanism of the present invention;

[0028] Figure 7 This is a planar schematic diagram of the injection port structure of the present invention.

[0029] In the diagram: 1. Die mold; 2. Pre-die mold; 3. Sealing mechanism; 31. Annular groove; 32. Annular slot; 33. Annular positioning block; 34. Water-expanding pad; 35. Annular slot; 36. Slurry inlet; 4. Inlet; 41. Limiting strip; 42. Turbine fan; 43. Blade; 44. Limiting rod; 45. Moving ball; 46. Movable rod; 47. Fixed ball; 48. Elastic strip; 5. Cooling mechanism; 51. Annular sleeve; 52. Annular baffle; 53. Cooling chamber; 54. Neutralization chamber; 55. Annular baffle one; 56. Inlet hole; 57. Return hole; 58. Annular baffle two; 59. Water inlet; 510. Drain outlet. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1-6 This invention provides four technical solutions:

[0032] Example 1

[0033] Please see Figure 1 and Figure 2 In this embodiment of the invention, a mold for manufacturing rubber products includes a die 1 and a pre-die 2. The die 1 and the pre-die 2 are assembled by a sealing mechanism 3. The upper part of the pre-die 2 is provided with an injection port 4 communicating with its interior. The exterior of the die 1 is provided with a cooling mechanism 5.

[0034] Please see Figure 3 In this embodiment of the invention, the cooling mechanism 5 includes an annular sleeve 51 fitted onto the outer wall of the die 1. The annular sleeve 51 has a hollow structure inside, and an annular baffle 52 is vertically arranged inside the annular sleeve 51. The annular baffle 52 divides the interior of the annular sleeve 51 into two regions: a cooling chamber 53 and a neutralizing chamber 54. The cooling chamber 53 is close to the innermost side of the annular sleeve 51, and several annular partitions 55 are arranged longitudinally and equidistantly inside the cooling chamber 53. The annular partitions 55 divide each cooling chamber 53 into several small spaces. An inlet hole 56 and a return hole 57 are respectively arranged from bottom to top on one side of each small space. An annular partition 58 is arranged in the neutralizing chamber 54 between the inlet hole 56 and the return hole 57. Each annular partition 58 also divides the neutralizing chamber 54 into several small spaces. A water inlet 59 and a water outlet 510 are respectively arranged on the upper and lower sides of the annular sleeve 51.

[0035] In the above scheme: after the slurry is injected, it needs to be cooled. During cooling, cold water is added to the inlet 59. The cold water first enters the neutralization chamber 54, and then enters the cooling chamber 53 through the inlet hole 56 to cool the annular sleeve 51, thereby cooling the mold. Afterward, the cold water enters the neutralization chamber 54 through the return hole 57. This process is repeated until it is discharged from the drain hole 510. The cold water in the cooling chamber 53 is closest to the mold, so the water temperature in the cooling chamber 53 is higher. The cold water in the neutralization chamber 54 is farther from the mold, so the water temperature in the neutralization chamber 54 is lower. When the cold water in the cooling chamber 53 flows back to the neutralization chamber 54, it will neutralize with the low-temperature cold water in the neutralization chamber 54. After neutralization, it returns to the cooling chamber 53. Thus, the water temperature for cooling the mold will never be too high, improving the molding effect of the rubber product mold.

[0036] For further details, please refer to Figure 3 In this embodiment of the invention, both the inlet 59 and the outlet 510 are connected to the interior of the neutralization chamber 54, so that the injected cold water first enters the inlet 59 and finally exits from the outlet 510, thereby enabling the water in the cooling chamber 53 to flow back into the neutralization chamber 54 for neutralization, so that the cooling water temperature will not be too high.

[0037] For further details, please refer to [link / reference]. Figure 3 In this embodiment of the invention, there are several inlet holes 56 and return holes 57 arranged at equal intervals, and each inlet hole 56 and each return hole 57 is arranged in a ring on the outer wall of the annular baffle 52, so that the cold water can flow back into the neutralization chamber 54 evenly and improve the neutralization effect of the cold water.

[0038] For further details, please refer to Figure 3 In this embodiment of the invention, the annular baffle 52 is made of ceramic material. Ceramic is a high-temperature resistant and heat-insulating material, so that the water temperature in the neutralization cavity 54 will be affected by the mold temperature, thereby reducing the temperature of the high-temperature cooling water during neutralization.

[0039] It should be added that the annular baffle 52 is not limited to ceramic material, but can also be made of other high-temperature resistant and heat-insulating materials.

[0040] Example 2 differs from Example 1 in that:

[0041] Please see Figure 4 In this embodiment of the invention, a limiting strip 41 is horizontally provided on the inner wall of the injection port 4, and a turbine fan 42 is provided at the lower part of one end of the limiting strip 41. The turbine fan 42 is located at the central axis of the injection port 4, and each blade on the turbine fan 42 is provided with a blade 43.

[0042] In the above scheme: When manufacturing rubber products, slurry needs to be injected into injection port 4. The injected slurry moves at a relatively fast speed, so when it passes through turbine fan 42, it will rotate. When turbine fan 42 rotates, the blade 43 on turbine fan 42 will cut the slurry. If there are lumps of slurry injected, the blade 43 will break them up, which is beneficial to the molding quality of subsequent rubber products.

[0043] Example 3 differs from Example 1 in that:

[0044] Please see Figure 5 and Figure 6 In this embodiment of the invention, the sealing mechanism 3 includes an annular groove 31 disposed on the upper part of the die 1 and an annular slot 32 disposed on the lower part of the pre-die 2. An annular positioning block 33 is longitudinally slidably disposed inside the annular groove 31. By inserting the annular positioning block 33 into the annular slot 32 on the lower part of the pre-die 2, the die 1 and the pre-die 2 can be assembled, which plays the role of sealing and preventing misalignment.

[0045] Please see Figure 5 and Figure 6 In this embodiment of the invention, a water-swellable pad 34 is fixedly provided at the bottom of the annular positioning block 33. The bottom of the water-swellable pad 34 is fixedly provided inside the lower side of the annular groove 31. An annular slit groove 35 is provided at the upper part of the die 1 located inside the annular positioning block 33. An inlet hole 36 communicating with the inside of the annular groove 31 is provided at the lower part of the inner wall of the annular slit groove 35.

[0046] In the above scheme: the annular groove 32 on the pre-die 2 is snapped onto the annular positioning block 33 on the die 1, so that the two are assembled. The annular positioning block 33 can prevent the die 1 and the pre-die 2 from misaligning, and the annular positioning block 33 can also play a sealing role. When the sealing effect decreases, the injected slurry will first flow into the annular gap groove 35, and then enter the annular groove 31 through the slurry inlet hole 36, wetting the water-swellable pad 34 in the annular groove 31. After the water-swellable pad 34 is wetted, it will expand, thereby causing the annular positioning block 33 to move upward. The top of the annular positioning block 33 will fit tightly against the inner top side of the annular groove 32, so that the sealing effect is improved and the slurry leakage will not occur.

[0047] For further details, please refer to Figure 5 and Figure 6 In this embodiment of the invention, a plurality of grout inlet holes 36 are equidistantly arranged, and the grout inlet holes 36 are distributed in a ring on the inner wall of the annular groove 35. The grout inlet holes 36 correspond to the positions of the water-swellable pads 34 inside the annular groove 31. When grout leaks, the grout will flow evenly into the annular groove 31 through each grout inlet hole 36, thereby wetting the water-swellable pads 34.

[0048] Example 4 differs from Example 1 in that:

[0049] Please see Figure 7 In this embodiment of the invention, a limiting rod 44 is connected to one side of the turbine fan 42 above its blades. One end of the limiting rod 44 is connected to a movable ball 45. A movable rod 46 is hinged to the inner wall of the injection port 4. One end of the movable rod 46 is connected to a fixed ball 47. One side of the movable rod 46 is connected to the inner wall of the injection port 4 by an elastic strip 48. When the limiting rod 44 rotates once, the movable ball 45 at one end of the limiting rod 44 will collide with the fixed ball 47 once.

[0050] In the above scheme: when the turbine fan 42 rotates, it drives the limit rod 44 to rotate, and the limit rod 44 drives the moving ball 45 to rotate. The moving ball 45 will collide with the fixed ball 47 once every time it rotates. Under the elasticity of the elastic strip 48, when the fixed ball 47 is collided, the fixed ball 47 will move to one side under pressure. When the moving ball 45 leaves the fixed ball 47, the elastic strip 48 will make the fixed ball 47 quickly return to its original position. This process is repeated, which can make the injection port 4 vibrate and shake off the raw material attached to the inner wall of the injection port 4, thus saving raw material.

[0051] Working principle: The annular groove 32 on the pre-die 2 is snapped onto the annular positioning block 33 on the die 1, so that the two are assembled. The annular positioning block 33 can prevent the die 1 and the pre-die 2 from being misaligned, and the annular positioning block 33 can also play a sealing role.

[0052] When the sealing effect decreases, the injected grout will first flow into the annular groove 35, and then enter the annular groove 31 through the grout inlet 36, wetting the water-swellable pad 34 in the annular groove 31. After the water-swellable pad 34 is wetted, it will expand, thereby causing the annular positioning block 33 to move upward. The top of the annular positioning block 33 will then fit tightly against the inner top side of the annular groove 32, thus improving the sealing effect and preventing grout leakage.

[0053] When manufacturing rubber products, slurry needs to be injected into injection port 4. The injected slurry moves at a relatively high speed, so when it passes through turbine fan 42, it will rotate. When turbine fan 42 rotates, blade 43 on turbine fan 42 will cut the slurry. If there are clumps of slurry injected, blade 43 will break them up, which is beneficial to the molding quality of subsequent rubber products.

[0054] When the turbine fan 42 rotates, it drives the limit rod 44 to rotate, and the limit rod 44 drives the moving ball 45 to rotate. The moving ball 45 will collide with the fixed ball 47 once every time it rotates. Under the elasticity of the elastic strip 48, when the fixed ball 47 is collided, the fixed ball 47 will be pressured and move to one side. When the moving ball 45 leaves the fixed ball 47, the elastic strip 48 will make the fixed ball 47 quickly return to its original position. This process is repeated, which can make the injection port 4 vibrate and shake off the raw material attached to the inner wall of the injection port 4, thus saving raw material.

[0055] After the slurry is injected, it needs to be cooled. During cooling, cold water is added to the inlet 59. The cold water first enters the neutralization chamber 54, and then enters the cooling chamber 53 through the inlet hole 56 to cool the annular sleeve 51, thereby cooling the mold. After that, the cold water enters the neutralization chamber 54 through the return hole 57. This process is repeated until it is discharged from the drain hole 510.

[0056] The cold water in the cooling chamber 53 is closest to the molding die, so its temperature is relatively high. The cold water in the neutralization chamber 54 is farther from the molding die, so its temperature is relatively low. When the cold water in the cooling chamber 53 flows back into the neutralization chamber 54, it neutralizes with the low-temperature cold water in the neutralization chamber 54 and then returns to the cooling chamber 53. This ensures that the water temperature for cooling the die is never too high, thus improving the molding effect of rubber products.

[0057] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A mold for manufacturing rubber products, comprising a die (1) and a pre-die (2), characterized in that: The die (1) and the pre-die (2) are assembled by a sealing mechanism (3), and the upper part of the pre-die (2) is provided with an injection port (4) communicating with its interior. The outside of the die (1) is provided with a cooling mechanism (5). The cooling mechanism (5) includes an annular sleeve (51) fitted on the outer wall of the die (1). The inside of the annular sleeve (51) is a hollow structure, and an annular baffle (52) is vertically arranged inside the annular sleeve (51). The annular baffle (52) divides the inside of the annular sleeve (51) into two regions: a cooling chamber (53) and a neutralization chamber (54). The cooling chamber (53) is close to the innermost side of the annular sleeve (51). Furthermore, the interior of the cooling chamber (53) is provided with several annular baffles (55) arranged longitudinally at equal intervals. The annular baffles (55) divide each cooling chamber (53) into several small spaces. An inlet hole (56) and a return hole (57) are respectively provided on one side of each small space from bottom to top. An annular baffle (58) is provided in the neutralization chamber (54) between the inlet hole (56) and the return hole (57). Each annular baffle (58) divides the neutralization chamber (54) into several small spaces. The upper and lower sides of the annular sleeve (51) are respectively provided with a water inlet (59) and a water outlet (510). The inner wall of the injection port (4) is horizontally provided with a limiting strip (41). A turbine fan (42) is provided at the lower part of one end of the limiting strip (41). The turbine fan (42) is located at the central axis of the injection port (4), and each blade on the turbine fan (42) is provided with a blade (43). A limiting rod (44) is connected to one side of the turbine fan (42) above its blades. One end of the limiting rod (44) is connected to a movable ball (45). A movable rod (46) is hinged to the inner wall of the injection port (4). One end of the movable rod (46) is connected to a fixed ball (47). One side of the movable rod (46) is connected to the inner wall of the injection port (4) by an elastic strip (48). When the limiting rod (44) rotates once, the movable ball (45) at one end of the limiting rod (44) will collide with the fixed ball (47) once. Both the inlet (59) and outlet (510) are connected to the interior of the neutralization chamber (54); The inlet hole (56) and the return hole (57) are each provided at equal intervals, and each inlet hole (56) and each return hole (57) are arranged in a ring on the outer wall of the annular baffle (52).

2. The mold for manufacturing rubber products according to claim 1, characterized in that: The annular baffle (52) is made of ceramic.

3. The mold for manufacturing rubber products according to claim 1, characterized in that: The sealing mechanism (3) includes an annular groove (31) on the upper part of the die (1) and an annular slot (32) on the lower part of the pre-die (2). An annular positioning block (33) is longitudinally slidably arranged inside the annular groove (31). By inserting the annular positioning block (33) into the annular slot (32) on the lower part of the pre-die (2), the die (1) and the pre-die (2) can be assembled, which plays the role of sealing and preventing misalignment.

4. The mold for manufacturing rubber products according to claim 3, characterized in that: A water-swellable pad (34) is fixedly installed at the bottom of the annular positioning block (33). The bottom of the water-swellable pad (34) is fixedly installed inside the lower side of the annular groove (31). An annular slot groove (35) is provided at the upper part of the die (1) located inside the annular positioning block (33). An inlet hole (36) communicating with the inside of the annular groove (31) is provided at the lower part of the inner wall of the annular slot groove (35).

5. A mold for manufacturing rubber products according to claim 4, characterized in that: The slurry inlet holes (36) are arranged at equal intervals, and the slurry inlet holes (36) are distributed in a ring on the inner wall of the annular groove (35), and the positions of the slurry inlet holes (36) and the water-expanding pads (34) inside the annular groove (31) correspond to each other.

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