A fixture for quickly positioning a nut

Abstract

This utility model relates to a clamp for quickly positioning nuts, comprising a cylindrical shell. A positioning connector is located at the front end of the shell for contacting the workpiece surface. A positioning head, penetrating a pre-punched hole in the workpiece surface, is located in the middle of the positioning connector to facilitate the insertion and positioning of the nut. A magnetic component is located inside the front end of the shell, which magnetically attracts the nut to the workpiece surface. The magnetic component is driven to separate from the positioning connector by a moving component. This utility model has a reasonable structural design. In use, the positioning head penetrates the pre-punched hole in the workpiece surface, the positioning connector contacts one side of the workpiece surface, and the nut is inserted into the positioning head from the other side of the workpiece for positioning. The magnetic force of the magnetic component attracts the nut to the workpiece. The entire process is simple and convenient, eliminating the need for manual fine-tuning of the nut's position, solving the problem of nut positioning misalignment. Workers can focus on welding, reducing operational steps and improving welding quality and work efficiency.

Description

Technical Field

[0001] This utility model relates to a clamp that can quickly position a nut. Background Technology

[0002] In the conventional operation of welding nuts to the back of thin plates (such as sheet metal parts and chassis shells), workers usually need to hold the welding gun in one hand and use a simple positioning handle to slip the nut through the other hand to keep it in place. This operation mode has many drawbacks:

[0003] (1) The operation is cumbersome and the stability is poor: the surface of the thin plate is smooth, and the nut is easily affected by the shaking of the welding gun and the hand, causing the welding position to shift and requiring repeated adjustments; manual positioning is difficult to accurately position repeatedly.

[0004] (2) Significant safety hazards: Workers need to operate at close range in an environment of high temperature electric arc and welding slag splash, which affects their vision; the metal handle of the simple positioning handle is easy to conduct heat, and holding it for a long time will cause burning discomfort to the hands;

[0005] (3) Limited production efficiency: Each nut needs to be manually positioned, which significantly increases the time required for batch operations; the welding quality depends on the worker's experience, making it difficult to guarantee consistency and resulting in a high rework rate. Utility Model Content

[0006] This utility model addresses the problems existing in the prior art by providing a clamp that can quickly position a nut.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a clamp for quickly positioning a nut, comprising a cylindrical housing, a positioning connecting seat for contacting the workpiece surface at the front end of the housing, a positioning head for penetrating a pre-punched hole through the workpiece surface at the middle of the positioning seat, the positioning head facilitating the insertion and positioning of the nut; a magnetic component is provided inside the front end of the housing, the magnetic component attracting the nut to the workpiece surface by magnetic force, the magnetic component being driven by a moving component to separate from the positioning connecting seat.

[0008] Furthermore, the movable component includes a movable block and a push rod. The movable block is disposed inside the front end of the housing, and the magnetic component is installed inside the movable block. The push rod is coaxially arranged with the housing, the front end of the push rod is connected to the movable block, and the rear end of the push rod extends out of the housing. The push rod pulls the movable block to move along the housing.

[0009] Furthermore, the movable block is a stepped shaft with a large front diameter and a small rear diameter, and the movable block has an open mounting groove inside; the magnetic component includes a ring-shaped magnet, which is coaxially disposed in the mounting groove, and the front end face of the magnet is in contact with the positioning connection seat.

[0010] Furthermore, a ceramic heat dissipation ring is provided between the outer peripheral side of the magnet and the inner side of the mounting groove.

[0011] Furthermore, an annular baffle is fixed inside the housing, and a return spring abuts between the annular baffle and the stepped surface on the outer periphery of the moving block. The return spring is sleeved on the outer rear end of the moving block.

[0012] Furthermore, the rear end of the movable block is provided with a first connecting screw hole, and the front end of the push rod is screwed into the first connecting screw hole.

[0013] Furthermore, the positioning connector is a cylindrical shape with an open rear end. The positioning connector is sleeved on the outer front end of the housing. A second connecting screw hole extending rearward is coaxially provided in the middle of the positioning connector. The rear end of the positioning head is screwed into the second connecting screw hole.

[0014] Furthermore, the peripheral sidewall of the positioning connector is locked together with the front peripheral sidewall of the housing by fasteners.

[0015] Furthermore, the rear port of the housing is provided with a rear cover, the push rod slides through the middle of the rear cover, and the rear end of the push rod is provided with a spherical handle.

[0016] Furthermore, both the housing and the positioning connector are made of aluminum alloy.

[0017] Compared with the prior art, the present invention has the following advantages: The present invention has a reasonable structural design. When in use, the positioning head penetrates the pre-punched hole on the surface of the workpiece, the positioning connecting seat contacts one side of the workpiece surface, and the nut is put into the positioning head from the other side of the workpiece to achieve positioning. The magnetic force of the magnetic component is used to attract the nut and the workpiece together. The whole process is simple and convenient to operate, without the need for manual fine adjustment of the nut position, solving the problem of nut positioning offset. Workers can focus on welding, reduce operation steps, and improve welding quality and work efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the front cross-sectional structure of an embodiment of the present utility model;

[0019] Figure 2 This is a three-dimensional structural schematic diagram of an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the main structure of an embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of the usage state of an embodiment of this utility model. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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.

[0024] like Figures 1-4 As shown, this utility model discloses a clamp for quickly positioning nuts, which uses magnetic adsorption to replace manual alignment. Specifically, it includes a cylindrical shell 1. The front end of the shell 1 is provided with a positioning connecting seat 3 for planar contact with the surface of a workpiece 2 (such as a thin plate). The middle of the positioning seat 3 is provided with a positioning head 4 for penetrating a pre-punched hole in the surface of the workpiece (such as a thin plate). The positioning head 4 penetrates one end of the pre-punched hole in the surface of the workpiece 2 to facilitate the insertion and positioning of the nut 5. A magnetic component is provided inside the front end of the shell 1. The magnetic component attracts the nut 5 to the surface of the workpiece 2 with magnetic force. The magnetic component is driven by a moving component 6 to separate from the positioning connecting seat 3. When the magnetic component is separated from the positioning connecting seat 3, the magnetic force of the magnetic component no longer attracts the nut to the surface of the workpiece. In use, the positioning head passes through the pre-punched hole on the surface of the workpiece, the positioning connector contacts one side of the workpiece surface, and the nut is put into the positioning head from the other side of the workpiece to achieve positioning. The magnetic force of the magnetic component is used to attract the nut and the workpiece together. The whole process is simple and convenient to operate, without the need for manual fine-tuning of the nut position, solving the problem of nut positioning deviation. Workers can focus on welding, reduce operation steps, and improve welding quality and work efficiency.

[0025] In this embodiment, the moving component includes a moving block 7 and a push rod 8. The moving block 7 is disposed inside the front end of the housing 1, and the magnetic component is installed inside the moving block 7. The push rod 8 is coaxially arranged with the housing 1, with its front end connected to the moving block 7 and its rear end extending out of the housing 1. During operation, the push rod is manually held, pulling the moving block along the axis of the housing. The moving block drives the magnetic component to move synchronously, enabling the magnetic component to contact or separate from the positioning connector. When the magnetic component contacts the positioning connector, its magnetic force can attract the nut and the workpiece surface together (at the same time, the positioning connector and the workpiece surface are also attracted together). When the magnetic component separates from the positioning connector, the magnetic force acting on the nut weakens, allowing the positioning connector to separate from the workpiece surface.

[0026] In this embodiment, the movable block 7 is a stepped shaft with a large front diameter and a small rear diameter, and the movable block 7 has an open mounting groove 9 inside. The magnetic component includes a ring-shaped magnet 10, which is coaxially disposed in the mounting groove 9, and the front end face of the magnet 10 contacts the positioning connecting seat 3. The uniform attraction force generated by the ring magnet allows the nut to instantly fit into the pre-punched hole of the workpiece (thin plate) without manual fine-tuning, thus solving the positioning offset problem. Furthermore, the magnetic component can be a neodymium iron boron magnet.

[0027] In this embodiment, a ceramic heat dissipation ring 11 is provided between the outer peripheral side of the magnet 10 and the inner side of the mounting groove 9.

[0028] In this embodiment, an annular baffle 12 is coaxially fixed inside the housing 1. The annular baffle is fixed to the inner sidewall of the housing. A return spring 13 abuts against the stepped surface on the outer periphery of the moving block 7. The return spring 13 is sleeved on the outer rear end of the moving block 7. When the push rod is pulled backward, the moving block moves backward synchronously with the push rod. At this time, the moving block compresses the return spring. When the push rod is released, the elastic force of the return spring pushes the moving block forward, so that the moving block returns to its initial position.

[0029] In this embodiment, the rear end of the movable block 7 is provided with a first connecting screw hole 14, and the front end of the push rod 8 is screwed to the first connecting screw hole 14.

[0030] In this embodiment, the positioning connector 3 is a cylindrical shape with an open rear end. The positioning connector 3 is sleeved on the outer front end of the housing 1. The peripheral sidewall of the positioning connector 3 is locked to the front peripheral sidewall of the housing 1 by four circumferentially distributed fasteners (such as short-thread screws 15). Furthermore, a rearwardly extending second connecting screw hole 16 is coaxially provided in the middle of the positioning connector 3. The positioning head 4 is generally in the shape of a rotating body. The front end of the positioning head 4 is a cylindrical positioning guide post 40, which facilitates the insertion of the nut. The rear end of the positioning head 4 is a cylindrical threaded connection part 41, which is screwed into the second connecting screw hole 16. It should be noted that different positioning heads can be replaced according to the specifications of the nut during use, improving the versatility of welding.

[0031] In this embodiment, a rear cover 17 is provided at the rear port of the housing 1, and the push rod 8 slides through the middle of the rear cover 17. A spherical handle 18 is provided at the rear end of the push rod 8. The spherical handle makes it easier for workers to grip and move the push rod.

[0032] In this embodiment, both the housing 1 and the positioning connector 3 are made of aluminum alloy. The combination of the high-temperature resistant housing and the ceramic heat dissipation ring isolates the welding heat from being conducted to the magnet, preventing magnetic force attenuation and maintaining the magnetic attraction force as fixed as possible.

[0033] The specific operation process, taking an iron plate as an example:

[0034] 1. Select a matching locating head based on the inner diameter of the nut to be welded;

[0035] 2. Attach the positioning connector of the clamp to the other side of the iron plate where the nut needs to be welded;

[0036] 3. Insert the nut vertically into the positioning guide post at the front end of the positioning head, while ensuring that the end face of the nut is in contact with the plane of the iron plate surface;

[0037] 4. Secure the nuts by spot welding;

[0038] 5. Pull the push rod backward using the ball grip. The push rod moves the magnet backward via the moving block, causing the internal magnet to separate from the iron plate and remove the clamp.

[0039] 6. Reinforce the nuts with full welding.

[0040] After actual field use, it can be seen that the fixture is not simply a replacement for the simple positioning handle, but a systematic optimization of the thin plate nut welding process through the synergistic innovation of magnetic force and mechanical structure: (1) Efficiency improvement: The welding cycle of a single nut is shortened from 25-40 seconds in the traditional mode to 10-15 seconds; (2) Quality improvement: The nut position tolerance is reduced from ±2mm to ±0.5mm.

[0041] The advantages of this utility model are:

[0042] (1) Rapid self-alignment by magnetic attraction: The uniform attraction force generated by the ring magnet makes the nut instantly fit into the pre-punched hole of the workpiece, eliminating the need for manual fine-tuning and solving the problem of positioning offset.

[0043] (2) Thermal interference resistance: The combination of high temperature resistant shell and ceramic heat dissipation ring is used to isolate the welding heat from the magnet, avoid magnetic force attenuation, and fix the magnetic attraction force;

[0044] (3) Operation optimization: Workers do not need to be distracted and can focus on welding, reducing operation steps; modular components support the replacement of positioning heads that are compatible with different nut specifications within seconds, improving the universality of welding;

[0045] (4) Self-cleaning: When the user pulls the handle to release the clamp, the internal magnet will separate from the positioning connector, which makes the magnet lose its attraction to iron filings. The iron filings will fall off automatically under the action of gravity, thus realizing the self-cleaning function of the positioning connector.

[0046] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then, unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral forming process).

[0047] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model above include states or shapes that are similar to, close to, or approximate with them.

[0048] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A clamp for quickly positioning a nut, characterized in that: The device includes a cylindrical shell with a positioning connector at its front end for contacting the workpiece surface. The positioning connector has a positioning head in the middle for penetrating a pre-punched hole in the workpiece surface, which facilitates the insertion and positioning of a nut. A magnetic component is located inside the front end of the shell, which magnetically attracts the nut to the workpiece surface. The magnetic component is driven by a moving component to separate from the positioning connector.

2. The clamp for quickly positioning a nut according to claim 1, characterized in that: The movable component includes a movable block and a push rod. The movable block is disposed inside the front end of the housing, and the magnetic component is installed inside the movable block. The push rod is coaxially arranged with the housing, the front end of the push rod is connected to the movable block, and the rear end of the push rod extends out of the housing. The push rod pulls the movable block to move along the housing.

3. The clamp for quickly positioning a nut according to claim 2, characterized in that: The movable block is a stepped shaft with a large diameter at the front end and a small diameter at the rear end. The movable block has an open mounting groove at the front end. The magnetic component includes a ring-shaped magnet, which is coaxially arranged in the mounting groove. The front end face of the magnet is in contact with the positioning connector.

4. The clamp for quickly positioning a nut according to claim 3, characterized in that: A ceramic heat dissipation ring is provided between the outer peripheral side of the magnet and the inner side of the mounting groove.

5. The clamp for quickly positioning a nut according to claim 3, characterized in that: An annular baffle is fixed inside the housing. A return spring abuts between the annular baffle and the stepped surface on the outer periphery of the moving block. The return spring is sleeved on the outer rear end of the moving block.

6. The clamp for quickly positioning a nut according to claim 3, characterized in that: The rear end of the movable block is provided with a first connecting screw hole, and the front end of the push rod is screwed into the first connecting screw hole.

7. The clamp for quickly positioning a nut according to claim 1, characterized in that: The positioning connector is a cylindrical shape with an open rear end. The positioning connector is sleeved on the outer front end of the housing. A second connecting screw hole extending rearward is coaxially provided in the middle of the positioning connector. The rear end of the positioning head is screwed into the second connecting screw hole.

8. A clamp for quickly positioning a nut according to claim 7, characterized in that: The peripheral wall of the positioning connector is fastened to the front peripheral wall of the housing by fasteners.

9. A clamp for quickly positioning a nut according to claim 2, characterized in that: The rear end of the housing is provided with a rear cover, the push rod slides through the middle of the rear cover, and the rear end of the push rod is provided with a spherical handle.

10. A clamp for quickly positioning a nut according to claim 1, characterized in that: Both the housing and the positioning connector are made of aluminum alloy.

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