Spring clamping tool for safe switch gluing

Abstract

The utility model discloses a spring clamping frock for safety switch gluing, including positioning assembly, positioning assembly sets up on base, is positioned to base for, the base is provided with the top rod, the top rod upper end is provided with the extension rod, extension rod sliding is arranged on the base, the spring is sleeved on the extension rod, the spring is located between the base and the top rod, the nut of having the sleeve on the extension rod is above the base. The utility model has greatly reduced the defective rate of producing due to the process defect, reduced the manpower training cost, promoted the production line circulation efficiency, is especially suitable for batch production scene, improves the applicability, and the manufacturing cost is low, convenient operation and not easy to damage and so on beneficial effect.

Description

Technical Field

[0001] This utility model relates to a clamping fixture, and more specifically, to a spring clamping fixture for applying glue to safety switches. Background Technology

[0002] In the production and assembly process of safety switches, the sealing and fixing of potting compound is a key process to ensure the waterproof, dustproof performance and structural stability of the product. Its quality directly determines the safety and service life of the switch. Currently, the industry commonly uses traditional methods for potting compounding safety switches. This involves injecting the potting compound into the switch housing, then directly covering it with a cap without any clamping measures, relying solely on the adhesive's own viscosity and gravity to allow it to cure naturally and achieve a seal. However, this traditional process has several drawbacks. First, the potting compound undergoes slight volume changes during curing, and the lack of external constraint between the cap and the housing makes it prone to overflow. This not only damages the product's appearance but also requires additional manpower for cleaning. Second, gaps can easily form at the contact surface between the cap and the housing due to adhesive flow or minor deformation, resulting in incomplete sealing. This exposes internal components to the external environment, making them susceptible to dust and moisture corrosion during subsequent use, potentially leading to short circuits, malfunctions, and other safety hazards, significantly increasing defect rates and rework costs. Third, to prevent cap displacement before the compound has fully cured, the traditional method requires waiting for the potting compound to completely harden before proceeding. The next step involves solidification, which typically takes over 12 hours (e.g., overnight standing). During this time, tooling or workstations are continuously occupied, preventing continuous production and resulting in slow production line turnover. Furthermore, although the process steps seem simple, differences in operators' control over the amount of potting compound and the sealing force of the cap can further exacerbate product quality instability. Too much compound can worsen overflow problems, while too little can lead to insufficient sealing strength. Uneven sealing force can cause localized deformation of the shell, indirectly causing gaps. Therefore, long-term training for operators is necessary to control the defect rate caused by human factors to a low level, which requires high technical skills and increases costs.

[0003] Therefore, those skilled in the art are dedicated to providing a spring clamping fixture for applying glue to safety switches that can effectively solve the above-mentioned technical problems. Utility Model Content

[0004] To achieve the above objectives, this utility model provides a spring clamping fixture for applying glue to safety switches, including a positioning component, which is disposed on a base for positioning the base; A top rod is provided inside the base, and an extension rod is provided at the upper end of the top rod. The extension rod slides through the base. A spring is sleeved on the extension rod, and the spring is located between the base and the top rod. A nut is sleeved on the extension rod above the base.

[0005] Furthermore, the base includes a top guide section, the extension rod slides through the top guide section, and the nut is located above the top guide section; The top guide section has downwardly extending support sections symmetrically arranged at both ends. The spring and the top rod are located between the support sections. The lower outer side of each support section has a positioning section. There are two positioning components, and each positioning component is respectively arranged on the positioning section.

[0006] Furthermore, the top guide section, the positioning section, and the support section are integrally formed.

[0007] Furthermore, a positioning hole is provided on the positioning segment; The positioning component includes a screw rod passing through the positioning hole. The upper end of the screw rod is provided with a nut located above the positioning section and limited by the positioning hole. The lower part of the positioning section has a positioning block sleeved on the screw rod. Both sides of the positioning block are provided with bosses. The positioning block is located in the groove of the aluminum profile and fixes the base by cooperating with the bosses in the groove.

[0008] Furthermore, a first washer is fitted onto the screw, and the first washer is located between the nut and the positioning section.

[0009] Furthermore, the push rod is cylindrical and made of polyurethane material.

[0010] Furthermore, a rubber pad is provided at the lower end of the top guide section, and the spring is located between the rubber pad and the top rod.

[0011] Furthermore, the upper end of the extension rod is provided with an integrally formed handle, which is T-shaped.

[0012] Furthermore, a second washer is fitted onto the extension rod between the nut and the top guide section.

[0013] Furthermore, the top rod and the extension rod are detachably connected.

[0014] This utility model has the following beneficial effects: 1. This utility model uses the stable clamping force provided by the spring to ensure that the safety switch always maintains a tight fit between the cover and the shell during the curing process of the potting compound, which completely solves the common problems of glue overflow and gaps in traditional non-clamping methods. At the same time, it avoids the decline in the waterproof and dustproof performance of the product due to incomplete sealing, and greatly reduces the defect rate caused by process defects. 2. The tooling only requires three core steps to use: pull (pull the handle to compress the spring), place (place the switch to be processed), and release (release the handle to clamp). No complicated debugging or professional skills training is required. New employees can quickly master the operation method, reducing labor training costs. 3. Traditional methods require waiting for the potting compound to solidify naturally and cannot guarantee product stability. However, this tooling achieves immediate fixation by clamping, eliminating the need for additional waiting or auxiliary fixing processes. This significantly shortens the overall processing time for applying the potting compound to a single safety switch, improves production line efficiency, and is especially suitable for mass production scenarios. 4. Through preliminary testing, the spring model and compression amount are accurately matched (the force generated by a 5mm compression amount is adapted to the switch clamping requirements), ensuring that the clamping force is just right, which can meet the requirements of clamping to prevent glue overflow and gaps, and will not damage the internal structure of the switch due to excessive pressure; at the same time, the initial compression state of the spring can be finely adjusted by the nut to adapt to the clamping requirements of different specifications of safety switches, thereby improving applicability. 5. By adjusting the position of the nut to change the initial compression state of the spring, or by replacing the polyurethane top rod with a different size, it can be adapted to the glue clamping of various sizes and models of safety switches. There is no need to design special tooling for each specification of switch, which reduces the equipment investment cost of enterprises. At the same time, it also has the advantages of simple structure, low manufacturing cost, easy operation and not easy to damage. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of a specific embodiment of the present invention.

[0016] Figure 2 This is a schematic diagram of the base structure in this utility model.

[0017] Figure 3 This is a schematic diagram of the structure of this utility model fixed on an aluminum profile.

[0018] Figure 4 yes Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0019] Figure 5 yes Figure 3 A magnified schematic diagram of the structure at point B in the middle.

[0020] Figure 6 This is a three-dimensional structural diagram of the present invention, which is fixed on an aluminum profile and positions the switch.

[0021] Figure 7 yes Figure 6 A magnified schematic diagram of the structure at point C.

[0022] Figure 8 This is a schematic diagram of the positioning component in this utility model.

[0023] Figure 9 This is a schematic diagram of the structure of the present invention in the relaxed state without the switch placed thereon.

[0024] Figure 10 This is a schematic diagram of the clamping structure after the switch is placed in this utility model.

[0025] The attached diagram lists the components represented by each number as follows: 1. Positioning component; 2. Base; 3. Top rod; 5. Extension rod; 6. Spring; 7. Nut; 8. Screw; 9. Nut; 10. Positioning block; 11. Boss; 12. Aluminum profile; 12a. Groove; 13. First washer; 15. Rubber pad; 16. Handle; 17. Second washer; 2a. Top guide section; 2b. Support section; 2c. Positioning section; 2d. Positioning hole; 99. Switch. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments: In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" 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.

[0028] This fixture is fixed to the aluminum profile groove by positioning components (screw, positioning block, boss). The bosses on both sides of the positioning block can accurately engage with the aluminum profile groove. During installation, only tightening the nuts is required to complete the fixation. During disassembly, loosening the nuts allows for quick removal of the fixture, which is convenient for adjusting the workstation on the production line or for maintenance and replacement of the fixture.

[0029] like Figures 1 to 10 As shown, a spring clamping fixture for applying glue to a safety switch includes a positioning component 1, which is disposed on a base 2 and used to position the base 2. A top rod 3 is provided inside the base 2, and an extension rod 5 is provided at the upper end of the top rod 3. The extension rod 5 slides through the base 2. A spring 6 is sleeved on the extension rod 5, and the spring 6 is located between the base 2 and the top rod 3. A nut 7 is sleeved on the extension rod 5 above the base 2.

[0030] The base 2 includes a top guide section 2a, the extension rod 5 is slidably inserted through the top guide section 2a, and the nut 7 is located above the top guide section 2a; The top guide section 2a has downwardly extending support sections 2b symmetrically arranged at both ends. The spring 6 and the top rod 3 are located between each support section 2b. A positioning section 2c is provided on the outer side of the lower end of each support section 2b. Two positioning components 1 are provided, each positioned on its respective positioning section 2c. In this invention, the base 2 adopts an integrated molding structure (top guide section, support section, and positioning section integrated), improving the overall structural strength and avoiding deformation problems during long-term use. A first washer is provided between the screw and the nut, and a second washer is provided between the top guide section and the nut, which can reduce frictional wear between components and extend the service life of the tooling. The top guide section 2a, the positioning section 2c, and the support section 2b are integrally formed.

[0031] The positioning segment 2c is provided with a positioning hole 2d; The positioning component 1 includes a screw 8 passing through the positioning hole 2d. The upper end of the screw 8 is provided with a nut 9 located above the positioning section 2c and limited by the positioning hole 2d. The lower part of the positioning section 2c has a positioning block 10 sleeved on the screw 8. Both sides of the positioning block 10 are provided with bosses 11. The positioning block 10 is located in the groove 12a of the aluminum profile 12 and the base 2 is fixed by the groove 12a cooperating with the bosses 11.

[0032] A first washer 13 is fitted on the screw 8, and the first washer 13 is located between the nut 9 and the positioning section 2c.

[0033] The top rod 3 is cylindrical and made of polyurethane material, which combines elasticity and high strength to prevent damage to the appearance of switch 99 when pressed.

[0034] A rubber pad 15 is provided at the lower end of the top guide section 2a, and the spring 6 is located between the rubber pad 15 and the top rod 3.

[0035] The upper end of the extension rod 5 is provided with an integrally formed handle 16, which is T-shaped.

[0036] A second washer 17 is fitted onto the extension rod 5 between the nut 7 and the top guide section 2a. The top rod 3 and the extension rod 5 are detachably connected. Because the top rod and extension rod are detachably connected, when the top rod wears out, only the top rod needs to be replaced, eliminating the need to replace the entire tooling and reducing maintenance costs.

[0037] The optimal working principle of this utility model is as follows: The operator grips the T-shaped handle 16 and pulls it upwards, causing the extension rod 5 to slide upwards along the top guide section 2a of the base 2. Since the extension rod 5 is connected to the top rod 3, the top rod 3 moves upwards synchronously. At this time, the spring 6, fitted on the extension rod 5, is further compressed between the top rod 3 and the rubber pad 15, accumulating elastic potential energy until sufficient space is created below the top rod 3 to accommodate the safety switch. Then, the switch 99, pre-filled with potting compound and covered with its casing, is placed in the tooling clamping area below the top rod 3, ensuring that the switch 99 is aligned with the top rod 3. The operator releases the handle 16, and the spring 6, having accumulated elastic potential energy, begins to rebound, pushing the top rod 3 downwards. Under the elastic force of the spring 6, the top rod 3 applies a preset pressure (ensuring the force generated by a 5mm compression, determined through prior testing, is just right for the switch engagement requirement; see [reference]). Figure 9 and Figure 10 , Figure 9 In the relaxed state, the distance D1 between the lower end of the push rod 3 and the upper end of the aluminum profile 12 is 21mm. Figure 10 In the deposit state, the distance D2 between the lower end of the push rod 3 and the upper end of the aluminum profile 12 is 26mm. This acts on the surface of the safety switch 99, firmly pressing the switch to prevent problems such as glue overflow and gaps due to switch loosening during the curing process. After the potting glue of the switch 99 has cured and the glue application process is completed, the operator pulls the handle 16 upward again to compress the spring 6 and move the push rod 3 upward, removing the processed switch. The fixture returns to the initial clamping state, and the glue application and clamping operation of the next safety switch can be carried out, realizing cyclic operation.

[0038] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A spring clamping fixture for applying adhesive to safety switches, characterized in that: It includes a positioning component (1), which is disposed on a base (2) and is used to position the base (2); A top rod (3) is provided inside the base (2), and an extension rod (5) is provided at the upper end of the top rod (3). The extension rod (5) slides through the base (2). A spring (6) is sleeved on the extension rod (5), and the spring (6) is located between the base (2) and the top rod (3). A nut (7) is sleeved on the extension rod (5) above the base (2).

2. The spring clamping fixture for applying glue to safety switches as described in claim 1, characterized in that: The base (2) includes a top guide section (2a), the extension rod (5) slides through the top guide section (2a), and the nut (7) is located above the top guide section (2a); The top guide section (2a) has downwardly extending support sections (2b) symmetrically arranged at both ends. The spring (6) and the top rod (3) are located between each support section (2b). Each support section (2b) has a positioning section (2c) on its lower outer side. There are two positioning components (1), and each positioning component (1) is respectively arranged on each positioning section (2c).

3. The spring clamping fixture for applying glue to safety switches as described in claim 2, characterized in that: The top guide section (2a), the positioning section (2c), and the support section (2b) are integrally formed.

4. The spring clamping fixture for applying glue to safety switches as described in claim 3, characterized in that: The positioning section (2c) is provided with a positioning hole (2d); The positioning component (1) includes a screw (8) passing through the positioning hole (2d). The upper end of the screw (8) is provided with a nut (9) located above the positioning section (2c) and limited by the positioning hole (2d). The lower part of the positioning section (2c) has a positioning block (10) sleeved on the screw (8). Both sides of the positioning block (10) are provided with bosses (11). The positioning block (10) is located in the groove (12a) of the aluminum profile (12) and the base (2) is fixed by the groove (12a) cooperating with the bosses (11).

5. The spring clamping fixture for applying glue to safety switches as described in claim 4, characterized in that: A first washer (13) is fitted on the screw (8), and the first washer (13) is located between the nut (9) and the positioning section (2c).

6. The spring clamping fixture for applying glue to safety switches as described in claim 5, characterized in that: The top rod (3) is cylindrical and made of polyurethane material.

7. The spring clamping fixture for applying glue to safety switches as described in claim 6, characterized in that: A rubber pad (15) is provided at the lower end of the top guide section (2a), and the spring (6) is located between the rubber pad (15) and the top rod (3).

8. The spring clamping fixture for applying glue to safety switches as described in claim 7, characterized in that: The upper end of the extension rod (5) is provided with an integrally formed handle (16), which is T-shaped.

9. The spring clamping fixture for applying glue to safety switches as described in claim 8, characterized in that: The nut (7) and the top guide section (2a) have a second washer (17) fitted on the extension rod (5).

10. The spring clamping fixture for applying adhesive to safety switches as described in any one of claims 1 to 9, characterized in that: The top rod (3) is detachably connected to the extension rod (5).

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