Rubber coating device for through-wall terminal mold

Abstract

The utility model relates to the technical field of dies, in particular to a rubber coating device for a through-wall terminal die. The mounting block is mounted on the lower die body; the sliding core shaft is mounted in the sliding hole of the mounting block in a sliding manner; the reset mechanism exerts elastic force on the sliding core shaft, so that the sliding core shaft stretches out of the sliding hole when being located at the original position, and when external force acting on the sliding core shaft is larger than the elastic force of the reset mechanism, the reset mechanism is reset to reset the sliding core shaft when the external force acting on the sliding core shaft is larger than the elastic force of the reset mechanism. And the sliding core shaft overcomes the elastic force of the resetting mechanism to move towards the resetting mechanism under the action of external force. According to the utility model, the risk of electric leakage is avoided, the safety performance is good, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of through-wall terminal manufacturing, in particular to a rubber coating device for a through-wall terminal mould. Background Art

[0002] The through-wall terminal includes a housing A and a wiring terminal B, etc. Figure 1 As shown; in the manufacturing process, the through-wall terminal is generally manufactured by injection molding. After the injection molding is completed, the shell formed by the injection molding will form a corresponding cavity X at the bottom of the terminal. The current practice is to add a subsequent process to fill the cavity X with glue, and then polish it flat after filling. However, in actual use, we found that the through-wall terminal manufactured in this way has the following shortcomings: 1. There is a certain risk of leakage, which poses a safety hazard; 2. The increase in processes increases the defective rate of the product and affects the production efficiency. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a rubber-coating device for a through-wall terminal mold, which solves the problems existing in the prior art, has no risk of leakage, has good safety performance, and greatly improves production efficiency.

[0005] (II) Technical solution

[0006] To achieve the above purpose, the utility model provides the following technical solution: a rubber encapsulation device for a through-wall terminal mold, comprising:

[0007] The lower mold is concrete;

[0008] A mounting block, the mounting block being mounted on the lower mold body;

[0009] A sliding mandrel, the sliding mandrel being slidably mounted in the sliding hole of the mounting block;

[0010] A reset mechanism, wherein the reset mechanism applies an elastic force on the sliding core shaft so that the sliding core shaft extends out of the sliding hole when in the original position, and when the external force acting on the sliding core shaft is greater than the elastic force of the reset mechanism, the sliding core shaft overcomes the elastic force of the reset mechanism under the action of the external force and moves toward the reset mechanism.

[0011] As a further preferred technical solution of the present utility model, the reset mechanism includes a cylindrical helical spring.

[0012] As a further preferred technical solution of the utility model, the sliding mandrel includes a sliding rod and a frustum body connected to the end of the sliding rod.

[0013] As a further preferred technical solution of the utility model, it also includes a limiting mechanism for limiting the sliding core shaft.

[0014] As a further preferred technical solution of the utility model, the limiting mechanism includes a limiting body connected to the sliding core shaft and a limiting lower cavity provided at the bottom of the mounting block for installing the limiting body; when the sliding core shaft is in the original position, the top surface of the limiting lower cavity contacts the top surface of the limiting body to achieve the upper stroke limit of the sliding core shaft, and there is a lower limiting gap between the bottom surface of the limiting body and the upper surface of the lower mold body.

[0015] As a further preferred technical solution of the utility model, the limiting mechanism includes a limiting body connected to the sliding core shaft and a limiting upper cavity provided on the top of the mounting block for installing the limiting body, and the reset mechanism applies an upward elastic force to the limiting body; when the sliding core shaft is in the original position, there is a lower limiting gap between the upper surface of the lower mold body and the bottom surface of the sliding core shaft.

[0016] As a further preferred technical solution of the present utility model, the lower mold body is provided with a mounting hole for mounting the reset mechanism.

[0017] As a further preferred technical solution of the utility model, the sliding mandrel is provided with a guide column that cooperates with the reset mechanism.

[0018] As a further preferred technical solution of the utility model, the limiting mechanism includes a limiting body connected to the sliding core shaft, a limiting lower cavity provided at the bottom of the mounting block for installing the limiting body, and a limiting column cooperating with the reset mechanism, and there is a lower limiting gap between the bottom surface of the limiting body or the bottom surface of the limiting column and the upper surface of the lower mold body.

[0019] (III) Beneficial effects

[0020] The utility model has no risk of electric leakage, good safety performance and greatly improves the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the existing through-wall terminal structure;

[0022] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0023] Figure 3 For this utility model Figure 2 Schematic diagram of the middle sliding mandrel inserted into the cavity X;

[0024] Figure 4 For this utility model Figure 2Schematic diagram of the position of the middle reset mechanism and the sliding mandrel;

[0025] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of the present utility model;

[0026] Figure 6 This is a schematic diagram of the structure of Embodiment 3 of the present utility model;

[0027] Figure 7 It is a structural schematic diagram of utility model embodiment 4. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present utility model.

[0029] After extensive research, experiments and analysis of existing through-wall terminals, the applicant found that the reason for its safety hazards and low production efficiency is related to the structure of the mold used for processing and manufacturing. In the existing manufacturing method, after the injection molding is completed, a corresponding cavity X will be formed at the bottom of the terminal, and then the cavity X will be filled with glue, and then polished flat after filling with glue, which will cause several problems. The first problem is that the material for filling with glue is inconsistent with the material for injection molding. Because of the difference in materials, the deformation of the two is inconsistent after long-term use, which will cause gaps in the filled cavity, and then there is a risk of leakage, affecting the safety of the product. The second point is that during the process of filling with glue, the cavity will be poorly sealed and not firm. Even if there is actually a gap in the cavity, there will be a risk of leakage, affecting the safety of the product. The third point is that the entire product manufacturing process is increased, which not only affects the production efficiency, but also increases the product failure rate due to the addition of processes such as filling with glue and polishing. For this reason, the applicant has improved the mold for making through-wall terminals and developed a glue-wrapping device for through-wall terminal molds to overcome the problems existing in the above-mentioned prior art.

[0030] Embodiment 1; see attached Figure 2-4 , a rubber coating device for a through-wall terminal mold, which is applied to the mold of the through-wall terminal, and includes:

[0031] Lower mold concrete 1;

[0032] A mounting block 2, wherein the mounting block 2 is mounted on the lower mold body 1; the mounting block is fixed to the lower mold base 1 by screws, and the lower mold base 1 may have a cavity for mounting the mounting block;

[0033] A sliding mandrel 3, wherein the sliding mandrel 3 is slidably mounted in the sliding hole 201 of the mounting block 2, the sliding mandrel 3 is installed in the sliding hole with a clearance fit, and can slide in the sliding hole, and the sliding mandrel adopts a cylindrical structure;

[0034] A reset mechanism 4, wherein the reset mechanism 4 applies an elastic force to the sliding core shaft 3, so that the sliding core shaft 3 extends out of the sliding hole 201 when it is in the original position, and when the external force acting on the sliding core shaft 3 is greater than the elastic force of the reset mechanism 4, the sliding core shaft 3 overcomes the elastic force of the reset mechanism 4 under the action of the external force and moves in the direction of the reset mechanism 4. The elastic force applied by the reset mechanism 4 acts on the sliding core shaft, so that when it is working, the position of the sliding core shaft is the original position. At this time, there is no external force acting on the reset mechanism, and when an external force acts on the sliding core shaft, when this external force is greater than the elastic force of the reset mechanism 4, the sliding core shaft begins to leave the original position and moves in the direction of the reset mechanism. Generally, the reset mechanism 4 includes The cylindrical coil spring can also adopt a well-known elastic reset part such as an elastic rubber sleeve. Such a structural setting makes it possible that when processing the through-wall terminal, the top end of the sliding core shaft 3 is inserted into the cavity X under the action of the reset mechanism, that is, the sliding core shaft is in the original position at this time. When the injection molding starts, under the action of the pressure generated by the injection molding, the sliding core shaft overcomes the elastic force of the reset mechanism acting on it, withdraws from the cavity X, and is filled with the plastic melt to achieve the blocking of the cavity X. Such an operation mode not only completes the blocking of the cavity X in one go, saving time and effort, greatly improving the production efficiency, and improving the qualified rate of the product, but also because the blocking is achieved under pressure, the blocking effect is very good, which can avoid the subsequent leakage risk and has a very high safety.

[0035] Generally, the sliding mandrel 3 includes a sliding rod 301 and a truncated cone body 302 connected to the end of the sliding rod 301. The upper surface of the truncated cone body is a plane. The sliding rod and the truncated cone body are generally integrally formed. Of course, they can also be assembled separately using known methods such as welding.

[0036] Furthermore, it also includes a limiting mechanism 5 for limiting the sliding core shaft 3, and the limiting mechanism 5 can limit the stroke of the sliding core shaft. In this embodiment, the limiting mechanism 5 includes a limiting body 501 connected to the sliding core shaft 3 and a limiting lower cavity 502 provided at the bottom of the mounting block 2 for installing the limiting body 501; when the sliding core shaft 3 is in the original position, the top surface of the limiting lower cavity 502 contacts the top surface of the limiting body 501 to limit the upper stroke of the sliding core shaft 3, and there is a lower limiting gap 503 between the bottom surface of the limiting body 501 and the upper surface of the lower mold body 1, and the limiting body 501 It can be a circular ring structure or two or more evenly distributed plate-like bodies, which are integrally formed with the sliding mandrel or assembled separately in a known manner including welding. When the sliding mandrel 3 is in the original position, under the elastic force of the reset mechanism, the top surface of the limit lower cavity 502 and the top surface of the limit body 501 contact to limit the upper stroke of the sliding mandrel 3. At this time, there is a lower limit gap 503 between the bottom surface of the limit body 501 and the upper surface of the lower mold body 1. The existence of the lower limit gap can limit the downward stroke of the sliding mandrel, that is, the distance the sliding mandrel moves downward will not exceed the distance of the lower limit gap. Furthermore, the lower mold body 1 is provided with a mounting hole 101 for installing the reset mechanism 4. The reset mechanism 4 generally adopts a spring, which is installed in this mounting hole, which realizes elastic support for the sliding mandrel and is easy to install.

[0037] Working principle: The working principle of the technical solution of the utility model is described below in combination with Example 1. When starting to work, the through-wall terminal is already in place. At this time, under the action of the elastic force of the reset mechanism, the upper end of the sliding core shaft is inserted into the cavity X, that is, the sliding core shaft is in the original position. At this time, the top surface of the limiting lower cavity 502 is in contact with the top surface of the limiting body 501 to limit the sliding core shaft. After the injection molding starts, under the action of the pressure generated by the injection molding, the sliding core shaft overcomes the elastic force of the reset mechanism acting on it, and exits the cavity X until the lower limit gap is reached. The upper surface of the lower mold body 1 limits the downward stroke of the sliding core shaft, and the cavity X is filled with the plastic melt. Because this filling process is under injection pressure and the materials used are consistent, after the cavity X is sealed, not only the cavity X is sealed at one time, which saves time and effort, greatly improves the production efficiency, and improves the qualified rate of products, but also because the sealing is achieved under pressure, the sealing effect is very good, there will be no gaps, no leakage, and the subsequent leakage risk can be avoided, and the safety is very high.

[0038] Embodiment 2, see attached Figure 5In this embodiment, the limit body 501 includes an annular nut 5011 and a locking nut 5012. The sliding core shaft 3 is provided with an external thread W that cooperates with the annular nut. The annular nut is screwed on the external thread and locked in position by the locking nut. At this time, the lower limit gap is between the bottom surface of the locking nut and the upper surface of the lower mold body 1. Such a structure can adjust the distance of the lower limit gap 503 to improve adaptability. The rest is the same as Example 1.

[0039] Embodiment 3, see attached Figure 6 In this embodiment, the limiting mechanism 5 includes a limiting body 501 connected to the sliding core shaft 3, a limiting lower cavity 502 provided at the bottom of the mounting block 2 for installing the limiting body 501, and a limiting column 505 cooperating with the reset mechanism. There is a lower limiting gap between the bottom surface of the limiting body or the bottom surface of the limiting column and the upper surface of the lower mold body. The stroke of the lower limiting gap is generally formed between the bottom surface of the limiting body and the upper surface of the lower mold body, and can also be formed between the bottom surface of the limiting column and the upper surface of the lower mold body. The rest is the same as Example 1.

[0040] Embodiment 4; see attached Figure 7 The limiting mechanism 5 includes a limiting body 501 connected to the sliding core shaft 3 and a limiting upper cavity 504 arranged on the top of the mounting block 2 for mounting the limiting body 501, and the reset mechanism 4 applies an upward elastic force to the limiting body 501; when the sliding core shaft 3 is in the original position, there is a lower limiting gap 503 between the upper surface of the lower mold body and the bottom surface of the limiting body 501, and the rest is the same as Example 1.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rubber encapsulation device for a through-wall terminal mold, characterized in that: include: Lower mold concrete(1); A mounting block (2), wherein the mounting block (2) is mounted on the lower mold body (1); A sliding mandrel (3), the sliding mandrel (3) being slidably mounted in a sliding hole (201) of the mounting block (2); A reset mechanism (4), wherein the reset mechanism (4) applies an elastic force to the sliding core shaft (3), so that the sliding core shaft (3) extends out of the sliding hole (201) when in the original position, and when the external force acting on the sliding core shaft (3) is greater than the elastic force of the reset mechanism (4), the sliding core shaft (3) overcomes the elastic force of the reset mechanism (4) under the action of the external force and moves in the direction of the reset mechanism (4).

2. The rubber encapsulation device for a through-wall terminal mold according to claim 1, characterized in that: The reset mechanism (4) comprises a cylindrical helical spring.

3. The rubber encapsulation device for a through-wall terminal mold according to claim 1, characterized in that: The sliding mandrel (3) comprises a sliding rod (301) and a frustum (302) connected to the end of the sliding rod (301).

4. A rubber coating device for a through-wall terminal mold according to claim 1, 2 or 3, characterized in that: It also includes a limiting mechanism (5) for limiting the position of the sliding mandrel (3).

5. The rubber encapsulation device for a through-wall terminal mold according to claim 4, characterized in that: The limiting mechanism (5) comprises a limiting body (501) connected to the sliding core shaft (3) and a limiting lower cavity (502) provided at the bottom of the mounting block (2) for mounting the limiting body (501); when the sliding core shaft (3) is in the original position, the top surface of the limiting lower cavity (502) contacts the top surface of the limiting body (501) to limit the upward stroke of the sliding core shaft (3), and there is a lower limiting gap (503) between the bottom surface of the limiting body (501) and the upper surface of the lower mold body (1).

6. The rubber coating device for a through-wall terminal mold according to claim 4, characterized in that: The limiting mechanism (5) comprises a limiting body (501) connected to the sliding core shaft (3) and a limiting upper cavity (504) provided on the top of the mounting block (2) for mounting the limiting body (501); the resetting mechanism (4) applies an upward elastic force to the limiting body (501); when the sliding core shaft (3) is in the original position, a lower limiting gap (503) is provided between the upper surface of the lower mold body (1) and the bottom surface of the sliding core shaft (3).

7. The rubber encapsulation device for a through-wall terminal mold according to claim 1, characterized in that: The lower mold body (1) is provided with a mounting hole (101) for mounting the reset mechanism (4).

8. The rubber coating device for a through-wall terminal mold according to claim 5, characterized in that: The sliding core shaft (3) is provided with a guide column (303) that matches the reset mechanism (4).

9. The rubber encapsulation device for a through-wall terminal mold according to claim 5, characterized in that: The limiting mechanism (5) comprises a limiting body (501) connected to the sliding core shaft (3), a limiting lower cavity (502) provided at the bottom of the mounting block (2) for mounting the limiting body (501), and a limiting column (505) matched with the reset mechanism, and a lower limiting gap is provided between the bottom surface of the limiting body or the bottom surface of the limiting column and the upper surface of the lower mold body.

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