Mold for manufacturing waterproof ring and production method of waterproof ring

[0027] The embodiments of the present application will be described in detail below with reference to the accompanying drawings and examples, so as to fully understand and implement the implementation process of how to apply technical means to solve technical problems and achieve technical effects in the present application.

[0028] like Figure 1-3 As shown, the present invention adopts the following technical solutions, a mold for making a waterproof ring, comprising an upper template 10, a lower template 40, and a middle upper plate 20 and a middle upper plate 20 and a middle plate are arranged between the upper template 10 and the lower template 40. In the lower plate 30, the first side of the middle and upper plate 20 is recessed toward the middle and lower plate 30 side to form a first material cavity 50. The first material cavity 50 is provided with a feeding hole 60, and the material feeding The hole 60 is disposed through the first material cavity 50 , the second side of the middle and lower plate 30 is recessed toward the middle and upper plate 20 side to form a first molding cavity 70 , and a molding hole 80 is opened in the first molding cavity 70 . The lower template 40 is provided with a filling block 90 for filling the first molding cavity 70 , the filling block 90 is provided with a molding die 100 , and the upper template 10 is formed with a pressure adapted to the first material cavity 50 . Tight block 110.

[0029] One side of the upper template 10 is also provided with an upper heating plate 120, and one side of the lower template 40 is provided with a lower heating plate 130. When the molding die 100 enters the feeding hole 60, the molding die 100 The gap between the top of the feed hole 60 and the inner diameter of the lower end face of the feeding hole 60 is d, where d is 0mm-0.04mm, such as image 3 As shown, the opening on the feeding side of the feeding hole 60 is larger than the opening on the discharging side, which is a conical hole;

[0030] The present invention also provides a kind of production method of waterproof ring, it is characterized in that, comprises the following steps:

[0031] S1 - Preheat the upper template, the middle upper plate, the middle lower plate and the upper template to make the temperature reach 180°C to 190°C;

[0032] S2-fill the rubber material in the first material cavity of the middle and upper plate;

[0033] S3-The upper template is fixed, and the lower template is driven to drive the middle and lower plates and the middle and upper plates to move to one side of the upper template, so as to realize the connection and fixation of the four plates. In the fixed state, the upper template presses the rubber in the first material cavity;

[0034] S4-Molding;

[0035] S5 - After molding, the lower template is retracted, the middle and upper plates are separated from the upper template, and the middle and lower plates are separated from the middle and upper plates. The middle and lower plates are transferred to the reclaiming position by the material moving tool, and the molded products are taken out by the reclaiming device. ;

[0036] S6 - After taking out the formed product, observe whether there is a waste edge, and cut the waste edge on the product with the waste edge.

[0037] S7 - Process the waste edges formed on the middle and upper plates.

[0038] During the movement of the lower template, the middle lower plate, and the middle upper plate to the upper template side, the filling block of the lower template is attached to the first molding cavity of the middle and lower plate, and the molding die passes through the molding hole and then enters the inlet and outlet. In the material hole, the pressing block of the upper template enters the first material cavity and acts on the rubber material. In addition, during the molding process of the S4 step, the pressing block of the upper template acts on the rubber material, so that the rubber material is removed from the first material. The feeding hole and the forming hole pass through the feeding cavity in sequence, and at the same time, the feeding hole and the forming hole are filled, and the product is formed with the forming die. The structure of the feeding hole, the forming hole and the forming die is selected according to the product.

[0039] In the S2 step, the way of filling the sizing material is to inject the liquid sizing material or place the solid sizing material. There is a heating plate for heating it, and it is heated by the heating plate;

[0040] In the present invention, the lower template, the middle-lower plate, and the middle-upper plate are assembled into one body and then connected to the upper template, that is, the molding die, the feeding hole and the molding hole in the present invention are first integrated together, and then the upper template The rubber material is extruded, so that the rubber material can smoothly enter the feeding hole and the molding part of the forming hole, and the general process is to insert the molding die into the rubber material, which causes the overflow of the rubber material and leads to waste edges. In addition, the density of the entire waterproof ring is likely to be not uniform. There are some structures with high density and good strength, and other positions with low density, resulting in insufficient strength, thereby reducing the waterproof effect. The method adopted in the present invention can greatly reduce the generation of waste edges on the product. Most of the waste edges are directly left on the middle and upper plates, while the products are formed on the middle and lower plates, so most of the waste edges can be directly left on the middle and upper plates. The waste edge is removed, and the product is separated, reducing part of the operation of removing the waste edge, and the process is more concise and convenient.

[0041]As used in the specification and claims, certain terms are used to refer to particular components. It should be understood by those skilled in the art that hardware manufacturers may refer to the same component by different nouns. The description and claims do not use the difference in name as a way to distinguish components, but use the difference in function of the components as a criterion for distinguishing. As mentioned in the entire specification and claims, "comprising" is an open-ended term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range, and basically achieve the technical effect.

[0042] More use such as 10, upper template; 20, middle and upper plate; 30, middle and lower plate; 40, lower template; 50, first material cavity; 60, feeding hole; 70, first molding cavity; 80, Forming hole; 90, filling block; 100, forming die; 110, pressing block; 120, upper heating plate; 130, lower heating plate and other terms, it should be noted that the terms "include", "include" or any other Variations are intended to cover non-exclusive inclusions such that a commodity or system comprising a set of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to the commodity or system . Without further limitation, an element defined by the phrase "comprising a..." does not preclude the presence of additional identical elements in the article or system that includes the element.

[0043] The foregoing description shows and describes several preferred embodiments of the present invention, but as previously mentioned, it should be understood that the present invention is not limited to the form disclosed herein, and should not be construed as an exclusion of other embodiments, but may be used in various and other combinations, modifications and environments, and can be modified within the scope of the inventive concepts described herein, from the above teachings or from skill or knowledge in the relevant art. However, modifications and changes made by those skilled in the art do not depart from the spirit and scope of the present invention, and should all fall within the protection scope of the appended claims of the present invention.