A thermoforming mold for sealing thread plugs

Abstract

This utility model discloses a thermoforming mold for sealing thread plugs, comprising: an upper mold, a lower mold, and a middle plate. The bottom surface of the upper mold has a first forming groove, the surface of the lower mold has a second forming groove, and the middle plate has a forming cavity. The forming cavity, the first forming groove, and the second forming groove constitute a forming mold cavity. A forming post for sealing the thread plug's thread hole is provided within the first forming groove, and the bottom surface of the forming post contacts the bottom surface of the second forming groove. A forming ring groove for sealing the thread plug's sealing ring is provided within the forming cavity. The diameter of the forming cavity is smaller than the diameter of the upper opening of the second forming groove, and the bottom of the forming cavity smoothly transitions to the end face of the middle plate. This utility model introduces a middle plate structure, making demolding more convenient, and the forming ring groove can form a low-cost, high-sealing sealing ring, resulting in high economic benefits.

Description

Technical Field

[0001] This utility model belongs to the field of hot pressing mold technology, and specifically relates to a hot pressing molding mold for sealing thread plugs. Background Technology

[0002] A sealing wire plug is a component used to seal and protect wire harnesses by blocking wire holes. It is widely used in automobiles, electronic equipment, construction, and other fields, providing dustproof, waterproof, oilproof, and insulating functions to ensure the safe and stable operation of equipment. It is typically made of elastic materials such as rubber and silicone, and comes in various shapes, commonly round, T-shaped, and cross-shaped. It generally includes a main body and a channel for wire threading; some sealing wire plugs also include a sealing cap, limiting groove, and raised sections. Currently, sealing wire plugs are generally produced through thermoforming. The thermoforming mold mainly consists of an upper mold and a lower mold. After the upper and lower molds are closed, a cavity is formed, and the material is thermoformed within the cavity. However, due to the relatively complex structure of sealing wire plugs, such as… Figure 7 As shown, the product has steps and other structures on its circumference. Although the material has a certain degree of flexibility and can produce elastic deformation during demolding to facilitate demolding, the bottom of the product is still in the mold cavity of the lower mold, and there is no space for it to deform, which makes demolding difficult and may even damage the product. Utility Model Content

[0003] Purpose of the utility model: In order to overcome the above shortcomings, the purpose of this utility model is to provide a hot pressing mold for sealing thread plugs, thereby improving the ease of product demolding.

[0004] Technical solution: To achieve the above objectives, this utility model provides a hot-press forming mold for sealing thread plugs, comprising:

[0005] The upper mold, lower mold, and middle plate are provided. The bottom surface of the upper mold is provided with a first forming groove, the surface of the lower mold is provided with a second forming groove, and the middle plate is provided with a forming cavity. The forming cavity, the first forming groove, and the second forming groove constitute a forming mold cavity.

[0006] The first forming groove is provided with a forming column for forming the threading hole of the sealing plug, the bottom surface of the forming column is in contact with the bottom surface of the second forming groove, and the forming cavity is provided with a forming ring groove for forming the sealing ring of the sealing plug.

[0007] The diameter of the forming cavity is smaller than the diameter of the upper opening of the second forming groove, and the bottom of the forming cavity smoothly transitions to the end face of the middle plate.

[0008] Furthermore, the first forming groove is a circular groove, and a rectangular forming block is provided on one side of the first forming groove. The forming block is used to form a rectangular notch at the head of the sealing cable plug, so as to facilitate the cable passing through and being removed.

[0009] Furthermore, the second forming groove is a circular groove, and a chamfered bevel is provided inside the second forming groove.

[0010] Furthermore, the molding cavity is a cylindrical cavity, and a set of molding ring grooves are provided in the molding cavity, with equal spacing between the molding ring grooves.

[0011] Furthermore, the first forming groove is provided with three forming pillars, which are arranged circumferentially around the center of the first forming groove. The forming pillars can form three through holes on the product.

[0012] Furthermore, the lower mold is provided with a groove that engages with the middle plate, and the side of the groove is provided with a positioning arc-shaped protrusion, and the side of the middle plate is provided with an arc-shaped groove that engages with the positioning arc-shaped protrusion.

[0013] Furthermore, the groove is provided with a plurality of positioning protrusions, the middle plate is provided with positioning grooves that correspond to and fit with the positioning protrusions, the second forming groove is located on the positioning protrusions, and the forming cavity is located in the positioning groove.

[0014] Furthermore, each of the positioning protrusions is provided with a plurality of second forming grooves, and the number of the first forming grooves and forming cavities is the same as the number of the second forming grooves.

[0015] As can be seen from the above technical solution, this utility model has the following beneficial effects:

[0016] 1) This utility model discloses a thermoforming mold for sealing thread plugs. Through the design of an upper mold, a lower mold, and a middle plate, the upper and lower parts of the product detach from the upper and lower molds first during demolding, leaving the product on the middle plate. At this point, the product has sufficient space to deform when pulled out, making it easier to remove and preventing damage. 2) A forming ring groove is designed in the forming cavity of the middle plate. This groove forms a sealing ring similar to a sealing ring on the side of the thread plug. Compared to the traditional design of installing a sealing ring in a groove, this structure is less expensive, and there is absolutely no gap between the sealing ring and the thread plug body, resulting in a better sealing effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a hot-press forming mold for sealing thread plugs according to the present invention;

[0018] Figure 2 This is a cross-sectional view of a thermoforming mold for sealing a threaded plug according to the present invention;

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4This is a schematic diagram of the structure of the first forming groove described in this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the middle plate described in this utility model.

[0022] Figure 6 This is a top perspective view of a thermoforming mold for sealing thread plugs according to the present invention;

[0023] Figure 7 This is a schematic diagram of the sealing thread plug described in this utility model.

[0024] In the picture:

[0025] 1-Upper mold, 11-First forming groove, 12-Forming column, 13-Forming block, 2-Lower mold, 21-Second forming groove, 22-Chamfered bevel, 23-Positioning arc-shaped protrusion, 24-Positioning protrusion, 3-Middle plate, 31-Forming cavity, 32-Forming ring groove, 33-Arc-shaped groove, 34-Positioning groove. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. Example

[0027] In this embodiment, as Figures 1 to 6 This utility model discloses a hot pressing mold for sealing thread plugs, comprising:

[0028] The upper mold 1, the lower mold 2, and the middle plate 3 are provided. The bottom surface of the upper mold 1 is provided with a first forming groove 11, the surface of the lower mold 2 is provided with a second forming groove 21, and the middle plate 3 is provided with a forming cavity 31. The forming cavity 31, the first forming groove 11, and the second forming groove 21 form a forming mold cavity. The sealing thread plug is hot-pressed in the forming mold cavity.

[0029] The first molding groove 11 is provided with a molding column 12 for forming the thread hole of the sealing thread plug. The bottom surface of the molding column 12 contacts the bottom surface of the second molding groove 21. The molding cavity 31 is provided with a molding ring groove 32 for forming the sealing ring of the sealing thread plug. The molding ring groove 32 can form a sealing ring on the side of the sealing thread plug, and form a seal after installation.

[0030] The diameter of the molding cavity 31 is smaller than the diameter of the upper opening of the second molding groove 21, and the bottom of the molding cavity 31 smoothly transitions to the end face of the middle plate 3. The sealing thread plug forms a step at the junction of the molding cavity 31 and the second molding groove 21, and the smooth transition surface between the bottom of the molding cavity 31 and the end face of the middle plate 3 facilitates the removal and demolding of the bottom step.

[0031] Specifically, the first forming groove 11 is a circular groove, and a rectangular forming block 13 is provided on one side of the first forming groove 11.

[0032] Specifically, the second forming groove 21 is a circular groove, and a chamfered bevel 22 is provided inside the second forming groove 21. The bottom of the sealing wire plug is chamfered at the chamfered bevel 22 to facilitate the installation of the wire plug.

[0033] Specifically, the molding cavity 31 is a cylindrical cavity, and a set of molding ring grooves 32 are provided in the molding cavity 31, with equal spacing between the molding ring grooves 32.

[0034] The first forming groove 11 is provided with three forming columns 12, which are arranged in a circle with the center of the first forming groove 11 as the center.

[0035] Specifically, the lower mold 2 has a groove that engages with the middle plate 3. The side of the groove has a positioning arc-shaped protrusion 23, and the side of the middle plate 3 has an arc-shaped groove 33 that mates with the positioning arc-shaped protrusion 23. The groove contains multiple positioning protrusions 24, and the middle plate 3 has corresponding positioning grooves 34 that mate with the positioning protrusions 24. The second forming groove 21 is located on the positioning protrusions 24, and the forming cavity 31 is located within the positioning grooves 34. The precise mold closing between the middle plate 3 and the lower mold 2 is achieved through the engagement of the positioning arc-shaped protrusion 23 and the arc-shaped groove 33, and the engagement of the positioning protrusions 24 and the positioning groove 34.

[0036] In addition, each of the positioning protrusions 24 is provided with a plurality of second forming grooves 21, and the number of the first forming grooves 11 and the forming cavity 31 is the same as the number of the second forming grooves 21.

[0037] The working principle of the above embodiments is as follows:

[0038] This utility model discloses a thermoforming mold for sealing thread plugs. In use, the cut silicone or rubber material is placed into the mold; the middle plate 3 is connected and installed with the lower mold 2, the upper mold 1 is pressed down, and the first molding groove 11, the second molding groove 21 and the molding cavity 31 are combined to form a molding cavity. The silicone material in the mold is transformed into a fluid and fills the entire molding cavity; after the product is formed, the mold is opened. First, the middle plate 3 is separated from the lower mold 2. At this time, the product is stored on the middle plate 3, and the bottom of the product is separated from the lower mold 2. The product can be pulled out from the middle plate 3.

[0039] 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 can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. A thermoforming mold for sealing thread plugs, characterized in that, include: The upper mold (1), the lower mold (2) and the middle plate (3) are provided. The bottom surface of the upper mold (1) is provided with a first forming groove (11), the surface of the lower mold (2) is provided with a second forming groove (21), and the middle plate (3) is provided with a forming cavity (31). The forming cavity (31), the first forming groove (11) and the second forming groove (21) constitute a forming mold cavity. The first molding groove (11) is provided with a molding column (12) for forming the thread hole of the sealing plug. The bottom surface of the molding column (12) is in contact with the bottom surface of the second molding groove (21). The molding cavity (31) is provided with a molding ring groove (32) for forming the sealing ring of the sealing plug. The diameter of the forming cavity (31) is smaller than the diameter of the upper opening of the second forming groove (21), and the bottom of the forming cavity (31) smoothly transitions to the end face of the middle plate (3).

2. The hot pressing mold for sealing a threaded plug according to claim 1, characterized in that, The first forming groove (11) is a circular groove, and a rectangular forming block (13) is provided on one side of the first forming groove (11).

3. The hot pressing mold for sealing a threaded plug according to claim 1, characterized in that, The second forming groove (21) is a circular groove, and a chamfered bevel (22) is provided inside the second forming groove (21).

4. The hot pressing mold for sealing a threaded plug according to claim 1, characterized in that, The forming cavity (31) is a cylindrical cavity, and a set of forming ring grooves (32) are provided in the forming cavity (31), and the spacing between the forming ring grooves (32) is equal.

5. A hot-press forming mold for sealing a threaded plug according to claim 1, characterized in that, The first forming groove (11) is provided with three forming columns (12), which are arranged in a circle with the center of the first forming groove (11) as the center.

6. The hot pressing mold for sealing a threaded plug according to claim 1, characterized in that, The lower mold (2) is provided with a groove that engages with the middle plate (3), and the side of the groove is provided with a positioning arc-shaped protrusion (23). The side of the middle plate (3) is provided with an arc-shaped groove (33) that engages with the positioning arc-shaped protrusion (23).

7. A hot-press forming mold for sealing a threaded plug according to claim 6, characterized in that, The groove is provided with a plurality of positioning protrusions (24), and the middle plate (3) is provided with positioning grooves (34) that correspond to and fit with the positioning protrusions (24). The second forming groove (21) is located on the positioning protrusions (24), and the forming cavity (31) is located in the positioning groove (34).

8. A hot-press forming mold for sealing a threaded plug according to claim 7, characterized in that, Each of the positioning protrusions (24) is provided with a plurality of second forming grooves (21), and the number of the first forming grooves (11) and the forming cavity (31) is the same as the number of the second forming grooves (21).

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