Sealing plug vulcanization forming device

Abstract

The utility model relates to the field of vulcanized product manufacturing, in particular to a sealing plug vulcanization forming device which comprises an upper template and a lower template, a middle template is arranged between the upper template and the lower template, and the upper end and the lower end of the middle template are embedded in the upper template and the lower template respectively. An upper product groove is formed in the lower end of the upper mold plate, a lower product groove is formed in the upper end of the lower mold plate, and a mold core is connected to the middle mold plate; when the mold is closed, the mold core is embedded in the upper product groove and the lower product groove, and the upper product groove, the lower product groove and the mold core jointly form a mold cavity. Through the arrangement of the first overflow groove, the second overflow groove, the slow flow groove and the third overflow groove, redundant silica gel has enough overflow space, and accumulation of the silica gel can be avoided; in addition, due to the arrangement of the layered overflow grooves, cleaning of burrs or excessive materials is greatly facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of vulcanized product manufacturing, and particularly relates to a vulcanization molding device for a sealing plug. Background Art

[0002] Silicone sealing plugs are very common in various fields because of their good sealing performance and easy installation or removal. The production of traditional plugs mostly uses injection molds. Relatively speaking, the structure of injection molds is more complex, and the glue injection equipment used in conjunction with them is relatively expensive, which is not conducive to the cost control of enterprises.

[0003] In the prior art, there are also those using flat vulcanization molds for production. However, in production, problems such as material shortage and many burrs on the edge often occur; in addition, some sealing plug structures are relatively complex and it is not easy to take them out during demolding. Therefore, the utility model has developed a vulcanization molding device for a sealing plug to solve the problems existing in the prior art. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a vulcanization molding device for a sealing plug to solve the problems such as many burrs and difficult demolding and material taking in the prior art.

[0005] The technical solution of the utility model is: a vulcanization molding device for a sealing plug, including an upper template and a lower template. A middle template is arranged between the upper template and the lower template, and the upper and lower ends of the middle template are respectively embedded in the upper template and the lower template;

[0006] The lower end of the upper template is provided with an upper product groove, the upper end of the lower template is provided with a lower product groove, and a core is connected to the middle template; when the mold is closed, the core is embedded in the upper product groove and the lower product groove, and the upper product groove, the lower product groove and the core jointly form a cavity.

[0007] Preferably, the upper template is provided with a first relief groove, and the length direction of the first relief groove penetrates through the upper template; the lower template is provided with a second relief groove, and the length direction of the second relief groove penetrates through the lower template;

[0008] The middle template is embedded in the first relief groove and the second relief groove, and both ends of the middle template extend along the length direction of the first relief groove and the second relief groove and protrude from the upper template and the lower template.

[0009] Preferably, a vertical first guide rod is arranged in the second relief groove, and a first guide sleeve is arranged on the middle template and is connected with the first guide rod in a matching manner. When the mold is opened or closed, the first guide rod moves along the first guide sleeve to realize the guiding of the relative movement between the middle template and the lower template.

[0010] Preferably, vertical ridges are provided on the side wall of the second relief groove, and limiting grooves corresponding to the ridges are provided on the middle template. During mold opening or closing, the ridges move along the limiting grooves to achieve the limitation of the connection between the middle template and the lower template.

[0011] Preferably, a second guide rod is connected to the lower end of the upper template, and a second guide sleeve connected to the second guide rod is provided on the lower template; during mold opening or closing, the second guide rod moves along the second guide sleeve to achieve the guiding of the upper template and the lower template.

[0012] Preferably, the core is fixedly connected to the middle template, and a forming hole is provided on the core. During mold closing, the cavity is jointly formed by the upper product groove, the lower product groove and the forming hole.

[0013] Preferably, a first overflow groove is provided on the upper template, and the first overflow groove is arranged along the outer contour of the upper product groove;

[0014] A second overflow groove is provided on the lower template, and the second overflow groove is arranged along the outer contour of the lower product book;

[0015] During mold closing, the first overflow groove and the second overflow groove are correspondingly connected.

[0016] Preferably, a third overflow groove is provided on the lower template, the third overflow groove surrounds the second overflow groove, and a slow flow groove is provided between the second overflow groove and the third overflow groove.

[0017] Compared with the prior art, the advantages of the present utility model are:

[0018] (1) Through the settings of the first overflow groove, the second overflow groove, the slow flow groove and the third overflow groove, the redundant silica gel has sufficient overflow space, which can avoid the accumulation of silica gel; in addition, the setting of the hierarchical overflow grooves also greatly facilitates the cleaning of burrs or excess materials;

[0019] (2) When the mold is opened after the sealing plug is formed, the middle template carries the sealing plug product and is separated from the upper template and the lower template at the same time. At this time, the connection between the product and the middle template is only at the forming hole of the core. When taking the material, the product can be directly pulled out from the forming hole, which is convenient for taking the material and thus greatly improves the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0021] Figure 1 is an exploded structural schematic diagram of the sealing plug vulcanization forming device of the present utility model;

[0022] Figure 2 is a structural schematic diagram of the upper template of the present utility model;

[0023] Figure 3 This is a schematic structural view of the middle template of the present utility model.

[0024] Among them: upper template 1, upper product groove 11, second guide rod 12, first relief groove 13, first overflow groove 14;

[0025] lower template 2, lower product groove 21, second guide sleeve 22, second relief groove 23, rib 231, first guide rod 24, second overflow groove 25, third overflow groove 26, flow slowing groove 27;

[0026] middle template 3, core 31, forming hole 311, first guide sleeve 32, limit groove 33. Specific embodiments

[0027] The following combines specific embodiments to further elaborate on the content of the present utility model:

[0028] As Figures 1 - 3 shown, the present utility model is applied to the manufacture of a sealing plug. The sealing plug has a plug head, a handle and a hanging ring connected to the plug head, and the structure is relatively complex. In the present utility model, it is formed by vulcanization molding using a flat vulcanizing mold. The raw material is a solid silicone strip. During vulcanization molding, the silicone strip raw material is placed at the lower product groove on the lower template; when closing the mold, the silicone strip raw material flows under the pressing of the upper template to fill the entire cavity; when opening the mold, the upper template and the middle template are sequentially separated from the lower template, and the formed product moves with the middle template and demolds from the upper template and the lower template, and the operator or the robotic arm can take out the product from the middle template. Specifically:

[0029] A sealing plug vulcanization molding device includes an upper template 1 and a lower template 2. A middle template 3 is arranged between the upper template 1 and the lower template 2, and the upper and lower ends of the middle template 3 are respectively embedded in the upper template 1 and the lower template 2.

[0030] The lower end of the upper template 1 is provided with an upper product groove 11, the upper end of the lower template 2 is provided with a lower product groove 21, a core 31 is connected to the middle template 3, the core 31 is fixedly connected to the side of the middle template 3, and a forming hole 311 is arranged on the core 31. When closing the mold, the core 31 is embedded in the upper product groove 11 and the lower product groove 21, and the upper product groove 11, the lower product groove 21, the core 31 and the forming hole 311 together form a cavity 4.

[0031] The lower end of the upper template 1 is connected with a second guide rod 12, and the lower template 2 is provided with a second guide sleeve 22 connected to the second guide rod 12; when opening or closing the mold, the second guide rod 12 moves along the second guide sleeve 22 to realize the guiding of the upper template 1 and the lower template 2.

[0032] The upper template 1 is provided with a first relief groove 13, and the length direction of the first relief groove 13 runs through the upper template 1; the lower template 2 is provided with a second relief groove 23, and the length direction of the second relief groove 23 runs through the lower template 2. The middle template 3 is embedded in the first relief groove 13 and the second relief groove 23, and both ends of the middle template 3 extend along the length direction of the first relief groove 13 and the second relief groove 23 and protrude from the upper template 1 and the lower template 2.

[0033] A vertical first guide rod 24 is arranged in the second relief groove 23, and a first guide sleeve 32 which is in mating connection with the first guide rod 24 is arranged on the middle template 3. A vertical rib 231 is arranged on the side wall of the second relief groove 23, and a limiting groove 33 which is in mating connection with the rib 231 is arranged on the middle template 3. When the mold is opened or closed, the first guide rod 24 moves along the first guide sleeve 32 to realize the guiding of the relative movement between the middle template 3 and the lower template 2. At the same time, the rib 231 moves along the limiting groove 33 to realize the limiting of the connection between the middle template 3 and the lower template 2.

[0034] The upper template 1 is provided with a first overflow groove 14, and the first overflow groove 14 is arranged along the outer contour of the upper product groove 11. The lower template 2 is provided with a second overflow groove 25, and the second overflow groove 25 is arranged along the outer contour of the lower product groove. When the mold is closed, the first overflow groove 14 and the second overflow groove 25 are correspondingly connected.

[0035] The lower template 2 is provided with a third overflow groove 26, the third overflow groove 26 is arranged around the second overflow groove 25, and a slow flow groove 27 is arranged between the second overflow groove 25 and the third overflow groove 26.

[0036] In this embodiment, when the mold is installed on the vulcanization equipment, the upper template 1, the middle template 3 and the lower template 2 are all connected to the vulcanization equipment. Initially, the middle template 3 is embedded in the second relief groove 23 of the lower template 2; the silica gel strip raw material is placed on the lower product groove 21, and then the vulcanization equipment is started to close the mold; the upper template 1 moves downward under the drive of the vulcanization equipment and realizes the closing of the mold with the lower template 2 through the guiding cooperation of the second guide rod 12 and the second guide sleeve 22. At this time, the upper end of the middle template 3 is embedded in the first relief groove 13; after the product is vulcanized and formed, the vulcanization equipment first drives the upper mold to move upward and separate from the middle template 3 and the lower template 2. At this time, the sealing plug product is demolded from the upper template 1; then, the vulcanization equipment drives the middle template 3 to move upward. At this time, the sealing plug product moves upward with the middle template 3 to realize the demolding from the lower template 2. Finally, the product can be completely demolded by an operator or a robotic arm directly pulling it out from the forming hole 311.

[0037] It should be noted that after the sealing plug product is taken out, the mold is cleaned, and then the middle template 3 is driven to move downward by the vulcanization equipment; when the middle template 3 moves downward, the guiding of the movement is realized through the cooperation of the first guide rod 24 and the first guide sleeve 32, and at the same time, the limiting is realized through the cooperation of the convex strip 231 and the limiting groove 33. Generally, in the production process, to ensure that the silicone can completely fill the cavity 4, the input amount of the silicone strip raw material will be greater than the amount required for the formation of the sealing plug. When heating and vulcanizing after mold closing, after the silicone fills the cavity 4, the remaining silicone will flow around the cavity 4; the excess silicone first flows into the first overflow groove 14 and the second overflow groove 25, and then into the slow flow groove 27. If there is still excess silicone, it will flow into the third overflow groove 26. After demolding, the overflowed silicone forms burrs, which can be directly torn off.

[0038] In addition, it should be noted that to improve production efficiency, multiple cavities 4 can be provided in the same mold device, and multiple sealing plugs can be formed at one time. When multiple cavities 4 are provided, the third overflow groove 26 can be arranged to surround multiple cavities 4 at the same time. During molding, it is necessary to heat and vulcanize the silicone raw material through the mold, and corresponding heating devices need to be provided on the mold. There are various setting methods for the heating devices, and they are prior art, so they will not be specifically described in this embodiment.

[0039] The above embodiments are only for explaining the technical concept and characteristics of the present invention, and their purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A sealing plug vulcanization molding device, characterized in that: It comprises an upper template and a lower template, a middle template is arranged between the upper template and the lower template, and the upper and lower ends of the middle template are respectively embedded in the upper template and the lower template; The lower end of the upper template is provided with an upper product groove, the upper end of the lower template is provided with a lower product groove, and the middle template is connected with a core; when the mold is closed, the core is embedded in the upper product groove and the lower product groove, and the upper product groove, the lower product groove and the core together constitute a cavity.

2. A sealing plug vulcanization molding device according to claim 1, characterized in that: The upper template is provided with a first make way groove, the length direction of which passes through the upper template; the lower template is provided with a second make way groove, the length direction of which passes through the lower template; The middle template is embedded in the first make way groove and the second make way groove, and two ends of the middle template extend along the length direction of the first make way groove and the second make way groove, and protrude from the upper template and the lower template.

3. A sealing plug vulcanization molding device according to claim 2, characterized in that: A vertical first guide rod is arranged in the second clearance groove, and a first guide sleeve which is matched and connected with the first guide rod is arranged on the middle template. When the mold is opened or closed, the first guide rod moves along the first guide sleeve to guide the relative movement between the middle template and the lower template.

4. A sealing plug vulcanization molding device according to claim 3, characterized in that: A vertical convex strip is arranged on the side wall of the second clearance groove, and a limiting groove connected to the convex strip is arranged on the middle template. When the mold is opened or closed, the convex strip moves along the limiting groove to realize the limiting connection between the middle template and the lower template.

5. A sealing plug vulcanization molding device according to claim 1, characterized in that: The lower end of the upper template is connected with a second guide rod, and the lower template is provided with a second guide sleeve connected with the second guide rod; when the mold is opened or closed, the second guide rod moves along the second guide sleeve to guide the upper template and the lower template.

6. A sealing plug vulcanization molding device according to claim 1, characterized in that: The core is fixedly connected to the middle template, and a forming hole is arranged on the core. When the mold is closed, the cavity is composed of the upper product groove, the lower product groove and the forming hole.

7. A sealing plug vulcanization molding device according to claim 1, characterized in that: The upper template is provided with a first overflow groove, and the first overflow groove is arranged along the outer contour of the upper product groove; The lower template is provided with a second overflow groove, and the second overflow groove is arranged along the outer contour of the lower product booklet; When the mold is closed, the first overflow groove and the second overflow groove are connected correspondingly.

8. A sealing plug vulcanization molding device according to claim 7, characterized in that: The lower template is provided with a third overflow groove, the third overflow groove is arranged around the second overflow groove, and a slow flow groove is arranged between the second overflow groove and the third overflow groove.

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