Switching structure for welding tongs transformer

Abstract

The utility model relates to the technical field of electrode holders, and provides an adapter structure for an electrode holder transformer, which comprises a transformer and an adapter seat, and the transformer and the adapter seat are relatively fixed; the switching seat further comprises a metal inserting column and an elastic positioning piece, the switching seat comprises a seat body and a connecting seat, and the seat body and the transformer are relatively fixed; the connecting seat is fixed on the seat body; the metal inserting column is fixed on the transformer, is inserted into the connecting seat and is used for electrically connecting the transformer with the adapter seat; the elastic positioning piece is fixed in the connecting base and abuts against the metal inserting column. According to the switching structure for the welding pliers transformer, through the arrangement of the metal insertion column, when the switching structure needs to be disassembled, only the switching base needs to be disassembled, the metal insertion column is separated from the switching base, and compared with the prior art that a plurality of cold-pressed terminals need to be repeatedly connected in the connecting process, the switching structure for the welding pliers transformer is higher in mounting and disassembling efficiency and easier to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of welding clamps, in particular to a switching structure for a welding clamp transformer. Background Art

[0002] As modern industry develops towards full automation, production lines with robots as the main body have gradually become the mainstream of modern factories. Especially in automobile manufacturing companies, their main technology and manufacturing clusters - welding workshops are increasingly using automated robot welding guns. When the use of mechanized equipment to replace intensive human labor becomes an inevitable trend, the cost price of the equipment will inevitably become an important consideration.

[0003] The authorization announcement number is CN206662580U, which is suitable for a power frequency transformer input port of various robot spot welding tongs. It is equipped with an upper electrode and a lower electrode to adapt to the interface docking of various types of welding robots. However, the power supply connector of the existing welding tongs transformer is connected to the transformer by screw crimping, that is, crimping screws are set on the transformer, and cold-pressed terminals are set on the power supply connector. The cold-pressed terminals are fixed by crimping screws on the transformer, so that the power supply connector is electrically connected to the transformer. However, due to limited space and the need to repeatedly connect multiple cold-pressed terminals during the connection process, it has a direct impact on the installation speed and will also cause great obstacles to subsequent disassembly. Utility Model Content

[0004] In view of this, the utility model proposes an adapter structure for a welding clamp transformer, which provides a metal plug so that it can be directly inserted into the adapter seat to achieve electrical connection between the transformer and the adapter seat, thereby performing rapid disassembly and assembly of the transformer and the power supply connector.

[0005] The technical solution of the utility model is implemented as follows: The utility model provides a welding clamp transformer adapter structure, which includes a transformer and an adapter seat, wherein:

[0006] The transformer and the adapter are relatively fixed;

[0007] It also includes a metal plug column and an elastic positioning piece, and the adapter seat includes a seat body and a connecting seat, wherein:

[0008] The seat body and the transformer are relatively fixed;

[0009] The connecting seat is fixed on the seat body;

[0010] The metal plug is fixed on the transformer and inserted into the connecting socket to electrically connect the transformer to the adapter;

[0011] The elastic positioning piece is fixed inside the connecting seat and abuts against the metal plug post.

[0012] On the basis of the above technical solution, preferably, the adapter seat also includes a socket, and the socket is fixed on the seat body and electrically connected to the connecting seat.

[0013] On the basis of the above technical solution, preferably, the transformer includes a shell, the shell is relatively fixed to the adapter, a threaded groove is provided on the shell, one end of the metal plug is inserted into the threaded groove and fixed to the shell through the threaded groove.

[0014] On the basis of the above technical solution, preferably, it also includes a tightening nut, wherein the tightening nut is fixed on the end of the metal plug that is not inserted into the connecting seat.

[0015] Further preferably, the adapter seat also includes an offset joint, two ends of which are respectively fixed to the connecting seat and the socket, for electrically connecting the connecting seat and the socket.

[0016] On the basis of the above technical solution, preferably, the end of the metal plug inserted into the connecting socket is chamfered.

[0017] On the basis of the above technical solution, preferably, an expansion groove is provided at one end of the connection socket into which the metal plug is inserted.

[0018] Based on the above technical solution, preferably, the number of the metal plugs is three.

[0019] On the basis of the above technical solution, preferably, the three metal plug posts are distributed on three corners of the same isosceles trapezoid.

[0020] On the basis of the above technical solution, preferably, the elastic positioning member is provided with an elastic protrusion which is annularly distributed on the outside of the metal plug post and contacts the metal plug post.

[0021] The welding clamp transformer transfer structure of the utility model has the following beneficial effects compared with the prior art:

[0022] (1) By providing a metal plug, when disassembly is required, it is only necessary to remove the adapter and disengage the metal plug from the adapter. Conversely, the metal plug is inserted into the adapter and the adapter is fixed relative to the transformer, thereby completing the electrical connection between the transformer and the adapter. Compared with the prior art in which multiple cold-pressed terminals need to be repeatedly connected during the connection process, the installation and disassembly efficiency is higher and the operation is easier;

[0023] (2) An offset joint is provided to shift the connection position of each pin toward the outside, thereby increasing the spacing between each connection seat, so that the spacing between the metal posts is larger than the spacing between the pins, thereby facilitating the installation operation of the metal posts;

[0024] (3) An elastic positioning member is provided so that after the metal plug is inserted into the connector, the elastic positioning member is pushed to produce elastic deformation, thereby clamping the metal plug in the connector under the pressure of the elastic positioning member to restore the deformation, thereby preventing the metal plug from being unable to stably contact with the connector due to tolerance, resulting in excessive contact surface resistance affecting the practical stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a three-dimensional diagram of the adapter structure for the welding clamp transformer of the utility model;

[0027] Figure 2 It is a structural schematic diagram of the adapter seat of the adapter structure for the welding clamp transformer of the utility model;

[0028] Figure 3 It is a side view of the adapter structure connection seat for welding clamp transformer of the utility model;

[0029] Figure 4 for Figure 3 Section view at AA in the middle. DETAILED DESCRIPTION

[0030] The following will be combined with the implementation of the utility model to clearly and completely describe the technical solutions in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] like Figure 1-4 As shown, the welding tongs transformer adapter structure of the utility model comprises a transformer 1, an adapter seat 2, a metal plug post 3 and an elastic positioning member 4.

[0032] The transformer 1 is a power supply component of the welding clamp robot, which is fixed on the welding clamp robot or in an electrical box.

[0033] The adapter 2 is relatively fixed to the transformer 1. In a specific embodiment, after the adapter 2 and the transformer 1 are electrically connected, the adapter 2 can be directly fixed on the transformer 1 to ensure structural stability and electrical connection stability.

[0034] The welding clamp robot is connected to the adapter 2 through a corresponding connector and is electrically connected to the transformer 1 , so that the welding clamp robot can be powered by the transformer 1 .

[0035] The metal plug 3 is fixed on the transformer 1 and inserted into the adapter 2 for electrically connecting the transformer 1 to the adapter 2. The metal plug 3 is preferably a copper plug, which is preferably a cylindrical component so that the entire section can be inserted into the adapter 2 to avoid tolerance influences, which may cause the adapter 2 to be unable to be fully inserted, resulting in the adapter 2 being unable to be fixed to the transformer 1, or failing to form a stable electrical connection after being inserted into the adapter 2, resulting in excessive resistance and damage to the device.

[0036] When disassembly is required, only the adapter 2 needs to be removed to disengage the metal plug 3 from the adapter 2. Conversely, the metal plug 3 is inserted into the adapter 2 and the adapter 2 is fixed relative to the transformer 1, thereby completing the electrical connection between the transformer 1 and the adapter 2.

[0037] In this embodiment, the adapter 2 includes a base body 21 and a connecting base 22 . The base body 21 is relatively fixed to the transformer 1 . The connecting base 22 is fixed on the base body 21 . The metal plug 3 is inserted into the connecting base 22 .

[0038] The connection seat 22 and the metal plug 3 are supported by the same copper material. After the metal plug 3 is inserted into the connection seat 22, current conduction is achieved through direct contact with the connection seat 22. In addition, the number of metal plugs 3 needs to be consistent with the number of connection seats 22, and the positions correspond one to one.

[0039] The elastic positioning member 4 is fixed inside the connecting seat 22 and is abutted against the metal plug post 3. Through the provision of the elastic positioning member 4, after the metal plug post 3 is inserted into the connecting seat 22, the elastic positioning member 4 is pushed to produce elastic deformation, so that the metal plug post 3 is stuck in the connecting seat 22 under the pressure of the elastic positioning member 4 to restore the deformation, thereby avoiding the metal plug post 3 being unable to stably contact with the connecting seat 22 due to the influence of tolerance, resulting in excessive contact surface resistance affecting the practical stability of the device.

[0040] Specifically, the elastic positioning member 4 can be a metal sleeve with a spring sheet.

[0041] When the adapter 2 is separated from the transformer 1, the metal pin 3 is detached from the connecting seat 22. In order to accommodate the metal pin 3, the connecting seat 22 is provided with a slot with the same specifications as the metal pin 3 for one end of the metal pin 3 to be inserted. It should be noted that the main part of the seat body 21 is made of insulating material, preferably a material with good mechanical and chemical properties such as engineering plastics.

[0042] In addition, the adapter 2 also includes a socket 23, which is fixed on the base body 21 and electrically connected to the connecting base 22. A pin is also provided on the socket 23, and the connecting head of the welding clamp robot is connected through the pin. The socket 23 is the power supply connector in the prior art. After connection, the transformer 1 can power the welding clamp robot.

[0043] In this embodiment, the transformer 1 includes a shell 11 , which is relatively fixed to the adapter 2 . A threaded groove 111 is provided on the shell 11 , and one end of the metal plug 3 is inserted into the threaded groove 111 and fixed to the shell 11 via the threaded groove 111 .

[0044] Specifically, a metal part is embedded in the shell 11, and a threaded groove 111 is provided on the metal part. A thread is provided on one end of the metal plug post 3 inserted into the threaded groove 111, and the metal plug post 3 is threadedly connected to the metal part through the thread, thereby fixing the metal plug post 3 on the transformer 1. In addition, when the adapter 2 is removed from the transformer 1, there is no need to remove the metal plug post 3 simultaneously.

[0045] As a preferred embodiment, it also includes a tightening nut 5, which is fixed on the end of the metal plug post 3 that is not inserted into the connecting seat 22. By tightening the nut 5, a tool can be used to twist the tightening nut 5 so that one end of the metal plug post 3 is stably fixed to the transformer 1, and at the same time, it is convenient to install the metal plug post 3 on the transformer 1. Specifically, the tightening nut 5 is a hexagonal nut and can be integrally formed with the metal plug post 3.

[0046] Since the pins on the socket 23 are set at a relatively fixed position in order to match the welding clamp robot, and in order to facilitate the installation of the metal posts 3 on the transformer 1, the installation spacing needs to be greater than the mutual spacing of the pins. Therefore, an offset joint 24 is also provided on the adapter 2, and the two ends of the offset joint 24 are respectively fixed to the connecting seat 22 and the socket 23, and are used to electrically connect the connecting seat 22 and the socket 23. Through the set offset joint 24, the connection position of each pin is offset toward the outside, and the spacing between each connecting seat 22 is increased, so that the spacing between the metal posts 3 is larger than the spacing between the pins, which facilitates the installation operation of the metal posts 3.

[0047] In order to facilitate the insertion of the metal plug 3 into the connecting seat 22, the end of the connecting seat 22 where the metal plug 3 is inserted is provided with a flared groove 221. The flared groove 221 allows the metal plug 3 to be inserted into the connecting seat 22 without being completely aligned. In addition, the same chamfer as the side of the truncated cone is provided on the insertion end of the metal plug 3, further increasing the deflection range of the metal plug 3 when inserted into the connecting seat 22, thereby further improving the convenience of inserting the metal plug 3 into the connecting seat 22.

[0048] In this embodiment, the number of pins in the socket 23 is three, so that it can match most welding robot tongs on the market. Accordingly, in order to electrically connect the three pins to the transformer 1, the number of the metal posts 3 is also set to three. At the same time, in the arrangement of the pins, the pins are respectively located at the three corners of the same equilateral triangle, and the position of the connecting seat 22 is offset by the offset joint 24, and the three metal posts 3 are distributed on the three corners of the same isosceles trapezoid.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A welding clamp transformer adapter structure, comprising a transformer (1) and an adapter seat (2), wherein: The transformer (1) and the adapter (2) are relatively fixed; It is characterized in that it also includes a metal plug post (3) and an elastic positioning member (4), and the adapter seat (2) includes a seat body (21) and a connecting seat (22), wherein: The base body (21) and the transformer (1) are relatively fixed; The connecting seat (22) is fixed on the seat body (21); The metal plug (3) is fixed on the transformer (1) and inserted into the connecting seat (22) to electrically connect the transformer (1) and the adapter (2); The elastic positioning member (4) is fixed inside the connecting seat (22) and abuts against the metal plug post (3).

2. The welding clamp transformer transfer structure according to claim 1, characterized in that: The adapter seat (2) also includes a socket (23), which is fixed on the seat body (21) and electrically connected to the connecting seat (22).

3. The welding clamp transformer transfer structure according to claim 1, characterized in that: The transformer (1) comprises a shell (11), the shell (11) and the adapter (2) are relatively fixed, a thread groove (111) is provided on the shell (11), one end of the metal plug (3) is inserted into the thread groove (111), and is fixed to the shell (11) via the thread groove (111).

4. The welding clamp transformer transfer structure according to claim 1, characterized in that: It also includes a tightening nut (5), which is fixed on the end of the metal plug post (3) that is not inserted into the connecting seat (22).

5. The welding clamp transformer transfer structure according to claim 2, characterized in that: The adapter seat (2) further comprises an offset joint (24), the two ends of which are respectively fixed to the connecting seat (22) and the socket (23), and are used to electrically connect the connecting seat (22) and the socket (23).

6. The welding clamp transformer transfer structure according to claim 1, characterized in that: One end of the metal plug post (3) inserted into the connection seat (22) is chamfered.

7. The welding clamp transformer transfer structure according to claim 1, characterized in that: An expansion groove (221) is provided at one end of the connection seat (22) into which the metal plug post (3) is inserted.

8. The welding clamp transformer transfer structure according to claim 1, characterized in that: The number of the metal plug posts (3) is three.

9. The welding clamp transformer transfer structure according to claim 1, characterized in that: The three metal plug posts (3) are distributed on three corners of the same isosceles trapezoid.

10. The welding clamp transformer transfer structure according to claim 1, characterized in that: The elastic positioning member (4) is provided with an elastic protrusion which is distributed in an annular manner on the outside of the metal plug post (3) and contacts the metal plug post (3).

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