Injection mold suitable for non-vacuum injection vulcanization equipment

Abstract

An injection mold suitable for non-vacuum injection vulcanization equipment belongs to the technical field of mold processing, and comprises an upper mold, a middle mold and a lower mold, the middle mold is arranged on the lower mold, the upper mold is arranged on the middle mold, a plurality of injection ports are formed in the upper mold, and a product mold groove for forming a product is formed in the middle mold below the injection ports; hanging plates are arranged on the upper die and are fixedly arranged on the two sides of the upper die through hanging plate screw holes; the upper mold is hung on an injection vulcanizing machine through a hanging plate; an exhaust passage is arranged on the middle mold; the joint of the upper die and the middle die is connected with one end of an exhaust passage, and the other end of the exhaust passage is connected with a vacuum pump through an air pipe joint. The mold avoids the undesirable phenomena of air clog, insufficient filling, poor fusion and the like of the product. The production cycle of products is shortened, the productivity is improved, and the production cost is reduced. Products which are large in size, complex in shape and deep in cavity can be produced without depending on an injection vulcanizing machine with a vacuumizing function, and the undesirable phenomena of product air clogging, insufficient filling, poor fusion and the like are avoided.

Description

Technical Field

[0001] This utility model belongs to the field of mold processing technology, specifically relating to an injection mold suitable for non-vacuum injection vulcanization equipment. Background Technology

[0002] In the rubber manufacturing process, some products are often large in size, complex in shape, and have excessively deep cavities, making them prone to air pockets during production. In the past, injection vulcanizing machines with vacuum functions were required for production. Without such equipment, products would have defects such as air pockets, insufficient filling, and incomplete fusion, which would greatly affect the yield of finished products, resulting in a high defect rate and consequently impacting production costs.

[0003] Existing technical solutions involve adjusting the vulcanization process during production: ① reducing injection speed, increasing venting frequency and distance, and spraying water into the mold to assist venting. However, these methods increase the production cycle and can sometimes cause product scorching and defects due to excessively long cycles. ② Spraying water into the mold is highly unpredictable and can lead to insufficient vulcanization due to excessive water spraying causing low mold temperatures. Even with these two methods, issues such as air pockets, incomplete filling, and poor fusion still occur, resulting in unstable production and a persistently high defect rate.

[0004] In summary, the shortcomings of existing technologies are as follows:

[0005] 1. The vulcanization process avoids air trapping by reducing injection speed, increasing the number of venting times and venting distance. This method leads to low production efficiency of rubber products and is prone to scorching.

[0006] 2. The vulcanization process of spraying water into the mold to avoid air pockets leads to insufficient stability in rubber production. It can also cause the mold temperature to be too low due to excessive water spraying, resulting in insufficient vulcanization of the product. Utility Model Content

[0007] To address the shortcomings of existing technologies, an injection mold suitable for non-vacuum injection vulcanization equipment is provided, comprising an upper mold, a middle mold, and a lower mold. The middle mold is mounted on the lower mold, and the upper mold is mounted on the middle mold. The upper mold has several injection ports, and the middle mold below the injection ports has a product mold groove for forming the product.

[0008] Furthermore, a hanging plate is provided on the upper mold, and the hanging plate is fixedly installed on both sides of the upper mold through the hanging plate screw holes.

[0009] Furthermore, the upper mold is suspended on the injection vulcanizing machine via a hanging plate.

[0010] Furthermore, an exhaust channel is provided on the intermediate mold.

[0011] Furthermore, the connection between the upper mold and the middle mold is connected to one end of the exhaust channel, and the other end of the exhaust channel is connected to the vacuum pump through an air pipe connector.

[0012] Furthermore, a sealing ring groove is provided on the intermediate mold, and a sealing ring is provided on the sealing ring groove to prevent external air from entering the mold.

[0013] Furthermore, the bottom of the lower mold is provided with a mold locking hole for fixing the mold in the lower mold of the injection vulcanizing machine.

[0014] The beneficial effects of this utility model are:

[0015] 1. Avoid defects such as air pockets, insufficient filling, and poor fusion in the product.

[0016] 2. Reduce product production cycle, increase production capacity, and reduce production costs.

[0017] 3. It can produce large-volume, complex-shaped, and deep-cavity products without relying on injection vulcanizing machines with vacuum functions, and without producing defects such as air pockets, insufficient filling, or incomplete fusion. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the injection mold applicable to non-vacuum injection vulcanization equipment.

[0019] The attached figures are labeled as follows:

[0020] 1. Upper mold, 2. Middle mold, 3. Lower mold, 4. Injection port, 5. Hanging plate, 6. Hanging plate screw hole, 7. Exhaust channel, 8. Air pipe connector, 9. Product mold groove, 10. Lower mold locking hole, 11. Sealing ring, 12. Sealing ring groove. Detailed Implementation

[0021] An injection mold suitable for non-vacuum injection vulcanization equipment, such as Figure 1 As shown, it includes an upper mold 1, a middle mold 2, and a lower mold 3. The middle mold 2 is set on the lower mold 3, and the upper mold 1 is set on the middle mold 2. Several injection ports 4 are set on the upper mold 1, and a product mold groove 9 for forming the product is set on the middle mold 2 below the injection ports 4.

[0022] The upper mold 1 is provided with a hanging plate 5, which is fixedly installed on both sides of the upper mold 1 through the hanging plate screw holes 6.

[0023] The upper mold 1 is suspended on the injection vulcanizing machine via the hanging plate 5.

[0024] The middle mold 2 is provided with an exhaust channel 7.

[0025] The upper mold 1 and the middle mold 2 are connected to one end of the exhaust channel 7, and the other end of the exhaust channel 7 is connected to the vacuum pump through the air pipe connector 8.

[0026] The middle mold 2 is provided with a sealing ring groove 12, and a sealing ring 11 is provided on the sealing ring groove 12 to prevent external air from entering the mold.

[0027] The bottom of the lower mold 3 is provided with a mold locking hole 10 for fixing the mold in the lower mold of the injection vulcanizing machine.

[0028] The functions of each component in this mold are as follows:

[0029] The function of the upper mold 1 is to form the upper part of product 9;

[0030] The function of the middle mold 2 is to form the middle part of product 9;

[0031] The function of the lower mold 3 is to form the lower part of product 9;

[0032] The function of injection port 4 is to allow the rubber material to flow into the mold;

[0033] The function of the hanging plate 5 is to hoist the upper mold 1 onto the injection vulcanizing machine;

[0034] The function of the mounting screw 6 is to fix the mounting plate 5 to the upper mold 1;

[0035] The function of the exhaust channel 7 is to exhaust the gas inside the mold to the outside of the mold;

[0036] The function of the duct connector 8 is to connect the exhaust duct 7 and the vacuum pump;

[0037] Product 9 is the product that needs to be manufactured;

[0038] The function of the lower mold locking hole 10 is to fix the mold in the injection vulcanizing machine;

[0039] The function of the sealing ring 11 is to prevent external air from entering the mold.

[0040] The function of the sealing groove 12 is to install and fix the sealing ring 11;

[0041] The middle mold 2 is machined with an exhaust channel 7, an air pipe connector 8, and a sealing ring groove 12. The sealing ring 11 needs to be installed into the sealing ring groove 12.

[0042] The lower mold 3 is machined with a lower mold locking hole 10, which needs to be fixed to the injection vulcanizing machine.

[0043] The upper mold 1 has multiple through holes, which are called injection ports 4.

[0044] The manufacturing process of this mold is as follows:

[0045] When the upper mold 1, middle mold 2, and lower mold 3 are combined, the sealing ring 11 is used to seal the mold. An external vacuum pump is used to exhaust the air in the mold through the exhaust channel 7 and the air pipe connector 8 to the outside of the mold, so that the mold cavity is in a vacuum state. Then, the pressure of the injection vulcanizing machine is used to smoothly inject the rubber material into the product 9 through the injection port 4 to complete the production of the product.

[0046] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An injection mold suitable for non-vacuum injection vulcanization equipment, characterized in that, It includes an upper mold (1), a middle mold (2), and a lower mold (3). The lower mold (3) is equipped with a middle mold (2), the middle mold (2) is equipped with an upper mold (1), the upper mold (1) is equipped with several injection ports (4), and the middle mold (2) below the injection ports (4) is equipped with a product mold groove (9) for forming the product.

2. The injection mold suitable for non-vacuum injection vulcanization equipment according to claim 1, characterized in that, The upper mold (1) is provided with a hanging plate (5), which is fixedly installed on both sides of the upper mold (1) through the hanging plate screw holes (6).

3. The injection mold suitable for non-vacuum injection vulcanization equipment according to claim 2, characterized in that, The upper mold (1) is hoisted onto the injection vulcanizing machine via a hanging plate (5).

4. The injection mold suitable for non-vacuum injection vulcanization equipment according to claim 1, characterized in that, An exhaust channel (7) is provided on the middle mold (2).

5. The injection mold suitable for non-vacuum injection vulcanization equipment according to claim 4, characterized in that, The connection between the upper mold (1) and the middle mold (2) is connected to one end of the exhaust channel (7), and the other end of the exhaust channel (7) is connected to the vacuum pump through the air pipe connector (8).

6. The injection mold suitable for non-vacuum injection vulcanization equipment according to claim 1, characterized in that, The middle mold (2) is provided with a sealing ring groove (12), and a sealing ring (11) is provided on the sealing ring groove (12) to prevent external air from entering the mold.

7. The injection mold suitable for non-vacuum injection vulcanization equipment according to claim 1, characterized in that, The bottom of the lower mold (3) is provided with a mold locking hole (10) for fixing the mold in the lower mold of the injection vulcanizing machine.

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