Die capable of prolonging service life

Abstract

The utility model discloses a mould capable of prolonging service life, which comprises a rubber mould main body and a flow channel arranged in the rubber mould main body, an overflow groove is arranged on the part of the flow channel close to the broken surface of the rubber mould main body, and an exhaust groove is arranged on the periphery of the overflow groove. And the overflow grooves are formed in one side or two sides of the runner close to the broken surface part of the rubber mold main body. And the overflow groove is a semicircular groove with the radius of 3mm. The rubber mold further comprises an overflow channel which is formed in the rubber mold body and used for connecting the cavity and the overflow groove of the rubber mold body. According to the mold capable of prolonging the service life, the overflow groove is also formed in the part, close to the broken surface, of the rubber mold body, the part of the runner is also used as a part of a rubber position, and the exhaust groove is formed outside the overflow groove, so that the problem of material overflow of the runner part can be effectively solved, and mold repair caused by pressing damage of the runner part is avoided.

Description

Technical Field

[0001] This utility model relates to a mold with extended service life, belonging to the field of rubber mold technology. Background Technology

[0002] Due to its material properties, rubber has excellent flowability. On the mold's break surface near the glue line, even small gaps will result in glue overflow. Because the central runner lacks overflow channels, significant overflow occurs in the runner area. This overflow portion is very thin, making it easy for some overflow to remain on the mold surface during product removal. In automated production, this is unavoidable; even with manual removal, residue can still occur due to oversight. Any residue will cause damage to the parting surface during mold closing. Repeated damage leads to a pitted and uneven appearance on the break surface, resulting in even more overflow. Such molds must then be taken off the machine for repair. This creates a vicious cycle.

[0003] Since the runner and overflow channels are removed manually after molding, overflow in the runner is often overlooked. Therefore, damage to the runner can lead to mold rework.

[0004] It is evident that, in order to solve the above-mentioned technical problems and avoid mold repair caused by damage to the runner, there is an urgent need for a mold with extended service life. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a mold with extended service life. By opening an overflow groove in the part of the flow channel near the broken surface of the rubber mold body, the flow channel is also regarded as part of the glue position, and an air vent is opened outside the overflow groove, which can effectively solve the overflow problem in the flow channel and avoid mold repair caused by pressure damage to the flow channel.

[0006] To achieve the above objectives / to solve the above technical problems, this utility model adopts the following technical solution:

[0007] An extended life mold includes a rubber mold body and a flow channel formed within the rubber mold body. The flow channel has an overflow groove on the part of the rubber mold body near the broken surface, and an exhaust groove is provided around the overflow groove.

[0008] Furthermore, the overflow groove is located on one or both sides of the flow channel on the part of the rubber mold body near the broken surface.

[0009] Furthermore, the overflow groove is a semi-circular groove with a radius of 3mm.

[0010] Furthermore, it also includes an overflow channel, which is opened inside the rubber mold body and is used to connect the cavity of the rubber mold body with the overflow groove.

[0011] Furthermore, the overflow gap between the overflow groove and the flow channel is 0.1 mm.

[0012] Furthermore, the exhaust channel is provided in two sections.

[0013] Furthermore, the first section of the exhaust groove has a depth of 0.03 mm.

[0014] Furthermore, the second section of the exhaust groove has a depth of 0.5 mm.

[0015] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0016] The mold with extended service life provided by this utility model has an overflow groove opened in the part of the flow channel near the broken surface of the rubber mold body, and the flow channel is also regarded as part of the glue position. An air vent is opened outside the overflow groove, which can effectively solve the overflow problem in the flow channel and avoid the mold rework caused by the pressure damage to the flow channel.

[0017] The mold with extended service life provided by this utility model can more effectively remove air and various gases generated by the molten material during the heating process by setting the venting groove to two sections. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the mold for extending service life provided by this utility model.

[0019] In the diagram: 1. Rubber mold body; 2. Flow channel; 3. Overflow groove; 4. Venting groove. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1

[0023] This embodiment provides a mold with extended service life, including a rubber mold body 1 and a flow channel 2 opened in the rubber mold body 1. The flow channel 2 has an overflow groove 3 on the part of the rubber mold body 1 near the broken surface, and an exhaust groove 4 is provided around the overflow groove 3.

[0024] In the above technical solution, by also opening an overflow groove 3 in the part of the flow channel 2 near the broken surface of the rubber mold body 1, the part of the flow channel 2 is also regarded as part of the glue position, and an air vent 4 is opened outside the overflow groove 3, which can effectively solve the overflow problem of the flow channel and avoid the mold rework caused by the pressure damage of the flow channel. Example 2

[0025] The mold for extending service life provided in this embodiment differs from the mold for extending service life provided in Embodiment 1 in that:

[0026] To meet the overflow requirements under different conditions, the overflow groove 3 is opened on one or both sides of the flow channel 2 located on the side of the rubber mold body 1 near the broken surface, so as to collect most of the overflow material through the overflow groove 3.

[0027] The overflow groove 3 is a semi-circular groove with a radius of 3mm.

[0028] To achieve the connection between the cavity of the rubber mold body 1 and the overflow groove 3, an overflow channel is also included, which is opened inside the rubber mold body 1.

[0029] To meet molding and design requirements, in this embodiment, the overflow gap between the overflow groove 3 and the flow channel 2 is 0.1 mm to ensure that the molten plastic can flow smoothly and fill the cavity, while avoiding excessive material waste and product defects.

[0030] In order to more effectively remove air from the mold cavity and various gases generated by the molten material during the heating process, the exhaust groove 4 is provided with two sections.

[0031] The first section of the venting groove 4 has a depth of 0.03 mm. The shallow depth of the first section of the venting groove 4 is mainly used to remove air from the mold cavity and gas brought in by the molten material during injection, so as to avoid surface burns and insufficient injection volume of the product and eliminate various defects of the product.

[0032] The second section of the exhaust groove 4 has a depth of 0.5mm. The second section of the exhaust groove is relatively deep and its main function is to serve as a channel for air and gas to be discharged from the side of the template and the bottom plate of the locking seat into the atmosphere, ensuring that the gas can be discharged smoothly.

[0033] 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. A mold with extended service life, comprising a rubber mold body (1) and a flow channel (2) formed within the rubber mold body (1), characterized in that, The flow channel (2) is provided with an overflow groove (3) on the part of the rubber mold body (1) near the broken surface, and an exhaust groove (4) is provided around the overflow groove (3).

2. The mold with extended service life according to claim 1, characterized in that, The overflow groove (3) is opened in the flow channel (2) and located on one or both sides of the rubber mold body (1) near the broken surface.

3. The mold with extended service life according to claim 2, characterized in that, The overflow groove (3) is a semi-circular groove with a radius of 3 mm.

4. The mold with extended service life according to claim 1, characterized in that, It also includes an overflow channel, which is opened inside the rubber mold body (1) and is used to connect the cavity of the rubber mold body (1) with the overflow groove (3).

5. The mold with extended service life according to claim 1, characterized in that, The overflow gap between the overflow groove (3) and the flow channel (2) is 0.1 mm.

6. The mold with extended service life according to claim 1, characterized in that, The exhaust duct (4) is provided in two sections.

7. The mold with extended service life according to claim 6, characterized in that, The first section of the exhaust groove (4) has a depth of 0.03 mm.

8. The mold with extended service life according to claim 7, characterized in that, The second section of the exhaust groove (4) has a depth of 0.5 mm.

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