CN216462408U - Tooth-shaped spot welding device and spot welding equipment - Google Patents

Abstract

The utility model discloses a tooth-shaped spot welding device which is suitable for welding two contacted workpieces and comprises a first conductive piece and a carrier; the first conductive piece is pivoted on the carrier through a pivoting shaft; the outer side of the first conductive piece is provided with a plurality of conductive protruding parts around the pivot shaft, and when the first conductive piece rolls on one workpiece, the protruding parts are in point contact with the one workpiece. The tooth-shaped spot welding device has the advantages of reducing the working strength of workers and greatly improving the working efficiency. In addition, the utility model also discloses spot welding equipment.

Description

Tooth-shaped spot welding device and spot welding equipment

Technical Field

The present invention relates to a welding apparatus, and more particularly, to a spot welding apparatus that reduces the work intensity of workers and greatly improves the work efficiency.

Background

The spot welder adopts the principle of double-sided double-point over-current welding, when in work, two electrodes pressurize a workpiece to enable two layers of metals to form a certain contact resistance under the pressure of the two electrodes, when welding current flows from one electrode to the other electrode, instant thermal welding is formed at the two contact resistance points, and the welding current instantly flows from the other electrode to the electrode along the two workpieces to form a loop, and the internal structure of the workpiece to be welded is not damaged. The welding heads of the existing spot welding machines are generally in a needle point shape, and a connecting point is formed between two workpieces after welding, so when the two workpieces need to be subjected to line welding or multi-spot welding, the two workpieces need to be connected and subjected to multi-spot welding. For example, taking a current spot welding gun to weld two metal plates as an example, before welding, two superposed metal plates need to be placed on a workbench, a second electrode of the spot welding gun is connected to a metal plate on the lower side, then a worker holds the spot welding gun to press a welding head on the metal plate on the upper side, and after power is supplied, a first electrode of the welding head is conducted with the second electrode through the two metal plates, so that welding of the two metal plates is realized. If when carrying out many times welding spot, the workman just need frequent operation, not only increases working strength to operating time is long, and work efficiency is very low, is unfavorable for production.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a tooth-shaped spot welding device which reduces the working strength of workers and greatly improves the working efficiency.

Another object of the present invention is to provide a spot welding apparatus which reduces the working strength of workers and has high working efficiency.

In order to achieve the purpose, the tooth-shaped spot welding device provided by the utility model is suitable for welding two contacted workpieces and comprises a first conductive piece and a carrier; the first conductive piece is pivoted on the carrier through a pivoting shaft; the outer side of the first conductive piece is provided with a plurality of conductive protruding parts around the pivot shaft, and when the first conductive piece rolls on one workpiece, the protruding parts are in point contact with the one workpiece.

Compared with the prior art, the carrier is pivoted with the first conductive piece through the pivoting shaft, and the plurality of conductive protruding parts are arranged on the outer side of the first conductive piece around the pivoting shaft, so that when the carrier drives the first conductive piece to roll on the workpiece, the protruding parts arranged on the first conductive piece can be sequentially contacted with the workpiece to conduct electricity, a plurality of welding points are formed on the workpiece, and line welding is formed between the two workpieces. The carrier is only required to be operated once in the whole process, so that the repeated operation of the traditional spot welding machine can be avoided, and the working strength of workers is effectively reduced. And the moving speed of the carrier can be controlled, so that the rolling speed of the first conductive piece is increased, multi-point welding can be quickly realized, the working efficiency is very high, and the production cost is effectively reduced.

Preferably, the protrusion tapers from the end close to the first conductive member to the end far away from the first conductive member.

Specifically, the first conductive member is a roller. Therefore, the first conductive piece can roll more smoothly, the operation is simpler and more convenient, and the working efficiency is effectively improved.

Preferably, the protrusion is a gear tooth disposed on the outer periphery of the first conductive member.

Preferably, the carrier is a hand-held support.

Preferably, the castellated spot welding device further comprises a drive device for driving the carrier to move.

Preferably, the carrier is provided with a fixed conductive member, the pivot shaft is disposed on the fixed conductive member, the fixed conductive member is electrically connected with the pivot shaft, and the pivot shaft is electrically contacted with the first conductive member. Because the first conductive piece rolls on the carrier and cannot be directly connected and electrified through the wire, the wire can be connected to the fixed conductive piece by arranging the fixed conductive piece, so that the fixed conductive piece is electrically connected with the pin joint shaft, the pin joint shaft is electrically connected with the first conductive piece, and the first conductive piece can roll and can be electrically conducted.

A spot welding device is suitable for welding two contacted workpieces and comprises a second conductive piece, a transformer and a tooth-shaped spot welding device, wherein the first conductive piece is electrically connected with a first conductive end of the transformer; the second conductive piece can be electrically contacted with another workpiece and is electrically connected with the second conductive end of the transformer; the protrusion can be conducted with the second conductive member through the two workpieces.

Preferably, the second conductive member is a plate-shaped structure for carrying the two workpieces. Therefore, the workpiece can be ensured to be in stable electrical contact with the second conductive piece, and the welding stability is ensured.

Drawings

Fig. 1 is a schematic view of the construction of a spot welding apparatus of the present invention.

Detailed Description

In order to explain technical contents, structural features, and effects achieved by the present invention in detail, the following detailed description is given with reference to the embodiments and the accompanying drawings.

As shown in fig. 1, the spot welding apparatus 100 of the present invention is adapted to weld two workpieces in contact, one of the two workpieces is a thin plate-shaped workpiece 200, the spot welding apparatus 100 includes a tooth-shaped spot welding device 1, a second conductive member 2 and a transformer 3, the tooth-shaped spot welding device 1 includes a first conductive member 11 and a carrier 12; the first conductive member 11 is pivotally connected to the carrier 12 by a pivot shaft 13. A plurality of conductive protrusions 111 are disposed on the outer side of the first conductive member 11 around the pivot shaft 13, and the carrier 12 can drive the first conductive member 11 to roll on one of the workpieces 200, so that the protrusions 111 are in point contact with the one of the workpieces 200. The first conductive member 11 is electrically connected to a first conductive end of the transformer 3; the second conductive member 2 can be electrically contacted with another workpiece 300 and electrically connected with a second conductive end of the transformer 3; the protrusion 111 can be electrically connected to the second conductive member 2 through two pieces 200, 300.

The protrusion 111 is tapered from the end close to the first conductive member 11 to the end far from the first conductive member 11. The first conductive member 11 of this embodiment is a roller. Therefore, the first conductive piece 11 can roll more smoothly, the operation is simpler and more convenient, and the working efficiency is effectively improved. The protrusion 111 is a gear tooth disposed on the outer periphery of the first conductive member 11.

The carrier 12 is a hand-held support. In particular to a welding gun in the shape of a pistol. The carrier 12 is provided with a fixed conductive piece 14, the pivot shaft 13 is arranged on the fixed conductive piece 14, the fixed conductive piece 14 is electrically connected with the pivot shaft 13, and the pivot shaft 13 is electrically contacted with the first conductive piece 11. Since the first conductive member 11 rolls on the carrier 12 and cannot be directly connected and electrified through a wire, the fixed conductive member 14 is disposed to connect the wire to the fixed conductive member 14, so that the fixed conductive member 14 is electrically connected to the pivot shaft 13, and the pivot shaft 13 is electrically connected to the first conductive member 11, thereby rolling and conducting the first conductive member 11.

The second conductive member 2 is a plate-shaped structure for carrying the two workpieces 200, 300. Therefore, the workpiece 300 can be ensured to be in stable electrical contact with the second conductive member 2, and the welding stability is ensured.

Before spot welding, the two workpieces 200, 300 are first placed one on top of the other and on the second electrically conductive member 2, the sheet-shaped workpiece 200 being located above and the lower workpiece 300 being in electrical contact with the second electrically conductive member 2. Then, the tooth spot welding apparatus 1 is held by hand, the first conductive member 11 is rolled on the surface of the thin plate-like workpiece 200, and the power-on switch of the tooth spot welding apparatus 1 is pressed. At this time, one of the gear teeth of the first conductive member 11 is in contact with the surface of the thin plate-shaped workpiece 200 to conduct electricity, so that the first conductive member 11, the two workpieces 200 and 300 to be welded and the second conductive member 2 are conducted. At the moment of conduction, the current generates high temperature between the contact points of the two welded workpieces 200, 300, so that the contact points of the two welded workpieces 200, 300 are melted and connected together to form a welding point. When the tooth-shaped spot welding apparatus 1 is moved, the first conductive member 11 rolls by one tooth distance, the former tooth is separated from the thin plate-shaped workpiece 200, and the latter tooth is in contact with the thin plate-shaped workpiece 200 to conduct electricity, so that another spot welding point is formed again at a position spaced apart from the former spot welding point by one track. And so on, when the tooth-shaped spot welding device 1 is continuously pushed to move for a certain distance, the tooth-shaped spot welding device 1 forms a plurality of welding points on the rolling track of the first conductive member 11, so that the two workpieces 200 and 300 form line welding.

Compared with the prior art, the carrier 12 is pivoted with the first conductive member 11 through the pivoting shaft 13, and the plurality of conductive protrusions 111 are arranged on the outer side of the first conductive member 11 around the pivoting shaft 13, so that when the carrier 12 drives the first conductive member 11 to roll on the workpiece 200, the protrusions 111 arranged on the first conductive member 11 can be sequentially contacted with the workpiece 200 for conduction, a plurality of welding points are formed on the workpiece 200, and wire welding is formed between the two workpieces 200 and 300. The whole process only needs to operate the carrier 12 to move once, so that the repeated operation of the traditional spot welding machine can be avoided, and the working strength of workers is effectively reduced. In addition, the moving speed of the carrier 12 can be controlled, so that the rolling speed of the first conductive member 11 is increased, multi-point welding can be rapidly realized, the working efficiency is very high, and the production cost is effectively reduced.

In addition, the spot welding apparatus 100 in the above embodiment is designed to be a hand-held type, but the present application may be a table type, for example, a support may be provided, a driving device may be provided on the support, the driving device may drive the carrier to move in the X, Y, Z direction of the three-dimensional coordinates, a platform may be provided on the support, the second conductive member 2 may be provided on the surface of the platform, and then the stacked workpieces may be placed on the second conductive member 2. Therefore, after the first conductive member 11 is driven to contact with the workpiece, the first conductive member 11 is driven to move along a certain track, so that the purpose of automatic multi-spot welding can be achieved, the working efficiency is effectively improved, and the effect is the same as that of the handheld spot welding device 100.

The structure and control principle of the transformer involved in the spot welding device of the present invention are well known to those skilled in the art, and will not be described in detail herein.

The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the present invention, which is therefore intended to cover all equivalent changes and modifications within the scope of the present invention.

Claims (9)

1. The utility model provides a profile of tooth spot welding device, is applicable to the work piece welding with two contacts, its characterized in that: comprises a first conductive member and a carrier; the first conductive piece is pivoted on the carrier through a pivoting shaft; the outer side of the first conductive piece is provided with a plurality of conductive protruding parts around the pivot shaft, and when the first conductive piece rolls on one workpiece, the protruding parts are in point contact with the one workpiece.

2. The tooth spot welding apparatus according to claim 1, wherein: the protruding part is gradually tapered from one end close to the first conductive piece to one end far away from the first conductive piece.

3. The tooth spot welding apparatus according to claim 2, wherein: the first conductive member is a roller.

4. The tooth-shaped spot welding device according to any one of claims 1 to 3, wherein: the protruding part is a gear tooth arranged on the periphery of the first conductive piece.

5. The tooth spot welding apparatus according to claim 1, wherein: the carrier is a handheld support.

6. The tooth spot welding apparatus according to claim 1, wherein: the tooth-shaped spot welding device further comprises a driving device for driving the carrier to move.

7. The tooth spot welding apparatus according to claim 1, wherein: the carrier is provided with a fixed conductive piece, the pivot shaft is arranged on the fixed conductive piece, the fixed conductive piece is in conductive connection with the pivot shaft, and the pivot shaft is in conductive contact with the first conductive piece.

8. The utility model provides a spot welding equipment, is applicable to the work piece welding with two contacts which characterized in that: a tooth spot welding device comprising a second electrically conductive member, a transformer and the tooth spot welding device of any one of claims 1 to 7, the first electrically conductive member being electrically connected to a first electrically conductive end of the transformer; the second conductive piece can be electrically contacted with another workpiece and is electrically connected with the second conductive end of the transformer; the protrusion can be conducted with the second conductive member through the two workpieces.

9. The spot welding apparatus according to claim 8, wherein: the second conductive member is in a plate-shaped structure to bear the two workpieces.

Images