CN216829111U

CN216829111U - Indirect welding device and indirect welding equipment

Info

Publication number: CN216829111U
Application number: CN202123445618.3U
Authority: CN
Inventors: 刘会; 卿南平; 黄钊雄; 谢赛; 胡靓菲; 刘帅
Original assignee: Hunan Industrial Agent Innovation Research Institute Co ltd
Current assignee: Hunan Industrial Agent Innovation Research Institute Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-06-28
Anticipated expiration: 2031-12-31

Abstract

The utility model discloses an indirect welding set and indirect welding equipment, indirect welding set includes the base, adjustment mechanism, move the electrode arm, the static electrode arm, the soldered connection positive pole, the soldered connection negative pole, insulating gasket, first copper arm and second copper arm, adjustment mechanism fixes at the base, it is used for placing the interval of treating the welding workpiece to leave between moving electrode arm and the static electrode arm, adjustment mechanism is connected with the one end of moving the electrode arm and is used for adjusting angle and the welding pressure who moves the electrode arm, be provided with insulating gasket between first copper arm and the second copper arm. The indirect welding device comprises the indirect welding device, an external welding tongs, a workpiece clamp and a clamp bottom plate, wherein the indirect welding device and the workpiece clamp are arranged on the clamp bottom plate, the workpiece clamp is used for clamping a workpiece to be welded, and the anode and the cathode of the external welding tongs are respectively connected with the anode of a welding head and the cathode of the welding head. The indirect welding device and the equipment can effectively improve the welding efficiency and are suitable for the condition that the welding cannot be directly carried out in the process.

Description

Indirect welding device and indirect welding equipment

Technical Field

The utility model belongs to the technical field of machinery, specifically speaking, the utility model relates to an indirect welding device.

Background

With the change of industrial industry, the welding technology is continuously mature and perfected, and easier and efficient solutions are still sought for some welding difficulties in the production process. In the industrial welding of automobiles, the shapes of automobile body parts are complex, welding point positions often exist, and manual work and robots cannot reach or efficiently perform welding operation. At present, the indirect welding equipment provided by common welding tongs manufacturers has the defects that the opening angle of the welding tongs is insufficient or the occupied space of a mechanism is complex and too large, the indirect welding equipment cannot be installed on a workpiece clamp with limited space for use, floating adjustment cannot be carried out during welding, insufficient welding easily occurs, and repair welding needs to be carried out again. This has not only reduced output, has increased welding quality and accurate error risk, and when increasing the cost, still can draw the production beat of low production line, reduces production efficiency.

The welding equipment adopted by many current production lines is manual spot welding and robot welding. The manual spot welding has high labor intensity, poor safety, lower efficiency, inaccurate manual positioning, complex welding structure of individual parts of workpieces and manual welding incapability. And the robot welding is adopted, so that the early investment and later maintenance cost is high, the recovery period is too long, and the input-output ratio is low.

In summary, there is a need for an indirect welding apparatus that occupies a small space, has a simple structure, is easy to operate, has a low investment cost, has a high welding quality, can effectively improve the production efficiency and quality, and can weld parts that cannot be directly welded by manually operating a welding tongs due to an unclogged welding position on a welding production line.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the indirect welding device has the advantages of small occupied space, simple structure, simple operation, low investment cost and high welding quality, can effectively improve the production efficiency and quality, and can weld parts which are not smooth in welding position and can not be directly welded by manually operating a welding tongs on a welding production line.

In order to realize the purpose, the utility model discloses the technical scheme who takes does:

an indirect welding device comprises a base, an adjusting mechanism, a movable electrode arm, a static electrode arm, a welding head anode, a welding head cathode, an insulating gasket, a first copper arm and a second copper arm, wherein the adjusting mechanism is fixed on the base, a space for placing a workpiece to be welded is reserved between the movable electrode arm and the static electrode arm, the adjusting mechanism is connected with one end of the movable electrode arm and used for adjusting the angle and the welding pressure of the movable electrode arm, two ends of the first copper arm are respectively connected with the welding head anode/the welding head cathode and the static electrode arm, two ends of the second copper arm are respectively connected with the welding head cathode/the welding head anode and the movable electrode arm, and the insulating gasket is arranged between the first copper arm and the second copper arm.

On the basis of the scheme, in another improved scheme, the device further comprises a pressure increasing valve which is used for providing pressure for the adjusting mechanism.

On the basis of above-mentioned scheme, in another modified scheme, adjustment mechanism includes first cylinder and second cylinder, the base includes base and lower base, go up the base with the base is articulated down, the push rod of first cylinder with the bottom of going up the base is articulated, is used for driving go up the base and rotate, move the electrode arm with the top of going up the base is articulated, the push rod of second cylinder with move the electrode arm and connect, be used for driving move the electrode arm and rotate.

On the basis of the above scheme, in another improved scheme, the first copper arm and the second copper arm each include a pressed end and a conductive end, the pressed end of the first copper arm is connected with the welding head anode/the welding head cathode, and the conductive end of the first copper arm is connected with the static electrode arm; the pressed end of the second copper arm is connected with the welding joint cathode/the welding joint anode, the conduction end of the first copper arm is sequentially connected with an air-cooled cable and a conductive rod, and the conductive rod is tightly attached to the movable electrode arm.

On the basis of the scheme, in another improved scheme, the device further comprises an insulating support seat, the pressed end of the second copper arm is fixed to the top of the insulating support seat, the top of the pressed end of the second copper arm is provided with the insulating gasket, and the top of the insulating gasket is provided with the pressed end of the first copper arm.

On the basis of the scheme, in another improved scheme, the movable electrode arm, the static electrode arm, the welding head anode, the welding head cathode, the first copper arm, the second copper arm, the air-cooled cable and the conducting rod are all made of conducting materials.

The utility model also discloses an indirect welding equipment, including foretell indirect welding set, outside soldering turret, work piece holder and anchor clamps bottom plate, indirect welding set with work piece holder sets up on the anchor clamps bottom plate, work piece holder is used for pressing from both sides the tight work piece of treating the welding, outside soldering turret positive pole and negative pole respectively with the soldered connection positive pole with the soldered connection negative pole is connected.

On the basis of the scheme, in another improved scheme, at least two or more indirect welding devices are arranged on the clamp bottom plate in parallel.

On the basis of the scheme, in another improved scheme, the workpiece clamp comprises a power unit and a pressure arm, wherein the output end of the power unit is connected with one end of the pressure arm, and the pressure arm is used for pressing the workpiece to be welded.

The technical scheme of the utility model the beneficial technological effect who gains is:

the indirect welding device in the application has the advantages of small occupied space, simple structure, simplicity in operation, low investment cost and high welding quality, can effectively improve the production efficiency and quality, can weld parts which are not smooth in welding positions on a welding production line and cannot be directly welded by manually operating a welding tongs, or can increase the number of welding points as much as possible in a process with higher quality requirements. The indirect welding device can reduce the labor intensity of workers, improve the production efficiency, solve the problem of spot welding with a part of complicated space structures, occupy small space and effectively solve the problems in the prior art.

The indirect welding apparatus of the present application may be used in the following cases: (1) the clamp has a complex structure, insufficient welding space and welding spots with poor welding operability and visibility; (2) the automatic station, the required spot welding robot process can not be satisfied; (3) considering safety factors, the required welding points cannot be directly welded by manpower and need to be drained to the position of a safety net through a copper plate; (4) other reasons for the inability to weld directly on the process. The indirect welding equipment of this application has following beneficial effect: the flexibility degree of the welding of the white automobile body of the automobile is improved, and the welding quality of the white automobile body is improved; the investment cost is reduced, the operation is simple, and the welding efficiency can be effectively improved; the labor intensity of workers is reduced, and the welding problem that a part of space structures are complex is solved.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation.

FIG. 1 is a schematic structural view of an indirect welding apparatus according to the present invention;

fig. 2 is a schematic structural diagram of a welding fixture of the indirect welding device of the present invention (not shown in the external welding tongs).

Reference numerals:

1-booster valve 2-upper base 3-air cooling cable

4-lower base 5-moving electrode arm 6-welding joint positive electrode

7-insulating spacer 8-first copper arm 9-second copper arm

10-static electrode arm 11-conducting rod 12-insulating supporting seat

13-first cylinder 14-second cylinder 15-welding joint cathode

01-Indirect welding device 02-clamp bottom plate 03-control cabinet

Detailed Description

The present invention will be described in detail with reference to the drawings, which are provided for illustrative and explanatory purposes only and should not be construed as limiting the scope of the present invention in any way. Furthermore, features from embodiments in this document and from different embodiments may be combined accordingly by a person skilled in the art from the description in this document.

Example 1

Referring to fig. 1, the indirect welding device in this embodiment includes a base, an adjusting mechanism, a moving electrode arm 5, a static electrode arm 10, a welding head anode 6, a welding head cathode 15, an insulating spacer 7, a first copper arm 8, and a second copper arm 9, where the adjusting mechanism is fixed on the base, a space for placing a workpiece to be welded is left between the moving electrode arm 5 and the static electrode arm 10, the adjusting mechanism is connected with one end of the moving electrode arm 5 and is used to adjust an angle and a welding pressure of the moving electrode arm 5, two ends of the first copper arm 8 are respectively connected with the welding head anode 6 and the static electrode arm 10, two ends of the second copper arm 9 are respectively connected with the welding head cathode 15 and the moving electrode arm 5, and the insulating spacer 7 is disposed between the first copper arm 8 and the second copper arm 9. In other embodiments, the first copper arm 8 can also be connected to the welding head cathode 15, and the second copper arm 9 is connected to the welding head anode 6, so that the working principle and function of the indirect welding device are not affected.

In this embodiment, a workpiece to be welded is placed between the moving electrode arm 5 and the static electrode arm 10, and a point to be welded is aligned with a welding point on the moving electrode arm 5 and the static electrode arm 10; the positive electrode and the negative electrode of the external welding tongs are respectively communicated with the positive electrode 6 of the welding head and the negative electrode of the welding head, and current is respectively transmitted to the moving electrode arm 5 and the static electrode arm 10 through the first copper arm 8 and the second copper arm 9, so that points to be welded on a workpiece are welded. The indirect welding device of the embodiment is used for solving the technical problems of insufficient welding space and poor welding operability, and is commonly used for complicated stations in a vehicle body welding line, such as: the vehicle body assembly station, the floor assembly station and the like. The station fixture is complex, and the situation that parts of welding points are difficult to weld manually or by a robot generally occurs. And the welding head anode 6 and the welding head cathode of the indirect welding device are fixed on the clamp, so that remote welding can be realized, the welding efficiency can be effectively improved, and the labor intensity can be reduced.

The design principle and function of the indirect welding apparatus in the present embodiment will be described with reference to the schematic diagram of fig. 1:

the indirect welding device is a welding mode which utilizes an external welding machine to provide welding current, transmits the current to the moving electrode arm 5 and the static electrode arm 10 through the first copper arm 8 and the second copper arm 9, places a pressed workpiece between the moving electrode arm 5 and the static electrode arm 10, and forms a current loop to melt the workpiece to form a welding spot after the moving electrode arm 5 and the static electrode arm 10 press the workpiece.

(1) First copper arm 8, second copper arm 9: the welding device has the main functions of transferring welding current, and respectively corresponds to the inflow and outflow of secondary loop current, and the first copper arm 8 and the second copper arm 9 are separated by an insulating gasket 7 and fixed together by bolts. The pressed ends of the first copper arm 8 and the second copper arm 9 are directly contacted with the positive electrode 6 of the welding head and the negative electrode of the welding head, bear the pressure of the electrodes and transmit current, and the conduction ends of the first copper arm 8 and the second copper arm 9 play a role in transmitting current.

(2) Insulating gasket 7: the effective transmission of secondary loop current is ensured, and shunt is avoided.

(3) Air-cooled cable 3: its main function is also to deliver welding current.

(4) Moving electrode arm 5, static electrode arm 10: the welding device has the main functions of providing welding pressure to press a workpiece, and forming qualified welding points on the contact surfaces of the moving electrode arm 5, the static electrode arm 10 and the workpiece by resistance heat through current.

(5) An adjusting mechanism: is connected with the movable electrode arm 5 to drive the movable electrode arm 5 to press downwards and provide welding pressure to press the workpiece tightly.

Referring to the schematic drawings of fig. 1 and 2, on the basis of the above embodiment, in another modified embodiment, a pressure increasing valve 1 is further included, and the pressure increasing valve 1 is used for providing pressure to the adjusting mechanism. The secondary circuit of the indirect welding device in the embodiment is longer, the movable electrode arm 5 is connected to the adjusting mechanism, the movable electrode arm 5 is driven to press downwards through the adjusting mechanism, the pressure of the cylinder is increased by the pressure increasing valve 1, and the welding quality is guaranteed. The pressure increasing valve 1 can increase multiple clamping forces of the electrode arm, so that the welding quality of welding spots is more reliable.

Referring to the schematic diagram of fig. 1, on the basis of the above embodiment, in another modified embodiment, the adjusting mechanism includes a first cylinder 13 and a second cylinder 14, the base includes an upper base 2 and a lower base 4, the upper base 2 is hinged to the lower base 4, a push rod of the first cylinder 13 is hinged to the bottom of the upper base 2 and used for driving the upper base 2 to rotate, the movable electrode arm 5 is hinged to the top of the upper base 2, and a push rod of the second cylinder 14 is connected to the movable electrode arm 5 and used for driving the movable electrode arm 5 to rotate. The upper base 2 is driven to rotate through the first air cylinder 13, the second air cylinder 14 drives the motor arm to rotate, and the angle of the motor arm can be adjusted conveniently according to the shape of a workpiece to be welded.

Referring to the schematic diagram of fig. 1, on the basis of the above embodiment, in another modified embodiment, each of the first copper arm 8 and the second copper arm 9 includes a pressed end and a conductive end, the pressed end of the first copper arm 8 is connected to the bonding head anode 6/bonding head cathode, and the conductive end of the first copper arm 8 is connected to the static electrode arm 10; the pressed end of the second copper arm 9 is connected with the welding head cathode/welding head anode 6, the conduction end of the first copper arm 8 is sequentially connected with the air-cooled cable 3 and the conducting rod 11, and the conducting rod 11 is tightly attached to the movable electrode arm 5.

Referring to the schematic diagram of fig. 1, on the basis of the above embodiment, in another modified embodiment, the insulating support base 12 is further included, the pressed end of the second copper arm 9 is fixed on the top of the insulating support base 12, the top of the pressed end of the second copper arm 9 is provided with an insulating gasket 7, and the top of the insulating gasket 7 is provided with the pressed end of the first copper arm 8. Through setting up first copper arm 8 and second copper arm 9 on the insulation support base, raised the mounted position of soldered connection positive pole 6, soldered connection negative pole, when outside soldering turret was connected with soldered connection positive pole 6, soldered connection negative pole like this, operating space was big, and it is more simple and convenient to operate.

In addition to the above embodiments, in another modified embodiment, the moving electrode arm 5, the static electrode arm 10, the bonding head positive electrode 6, the bonding head negative electrode, the first copper arm 8, the second copper arm 9, the air-cooled cable 3 and the conductive rod 11 are made of conductive materials.

Referring to the schematic of fig. 1 and fig. 2, the utility model discloses still disclose an indirect welding equipment, including indirect welding set 01, outside soldering turret (not drawn in the figure), work piece holder and anchor clamps bottom plate 02 in above-mentioned embodiment, indirect welding set and work piece holder set up on anchor clamps bottom plate 02, and work piece holder is used for pressing from both sides the tight work piece of treating the welding, and the positive pole and the negative pole of outside soldering turret are connected with soldered connection positive pole 6 and soldered connection negative pole respectively.

In a further development of the exemplary embodiment, which is based on the exemplary embodiment described above and illustrated in fig. 2, at least two and more indirect welding devices are arranged in parallel on the base plate 02 of the clamping apparatus. With the arrangement, one workpiece is fixed on the clamp base plate 02, and two or more indirect welding devices can weld a plurality of welding points of the workpiece at the same time, so that the welding efficiency is improved.

Referring to the schematic illustration of fig. 2, on the basis of the above embodiment, in another modified embodiment, the work holder includes a power unit and a pressing arm, an output end of the power unit is connected with one end of the pressing arm, and the pressing arm is used for pressing the work to be welded. In this embodiment, the workpiece clamps are arranged on both sides of the clamp base plate 02, so that both ends of the workpiece can be fixed by the pressing arms on both sides, and the workpiece is prevented from displacing during welding.

Referring to the schematic diagram of fig. 2, on the basis of the above embodiment, in another modified embodiment, the indirect welding apparatus further includes a control cabinet 03, and a PLC control system is disposed in the control cabinet 03 and is used for controlling the working states of the indirect welding device and the workpiece fixture, so that automation and intelligence of positioning and welding of the workpiece can be ensured, and manual participation can be reduced. And a manual operation button is arranged on the control cabinet 03 and used for starting or stopping the PLC control system. Since the PLC control system is the prior art, it is not described herein.

The working steps of the indirect welding device are briefly described with reference to the schematic drawings of fig. 1 and 2:

and manually putting the workpiece into the workpiece clamp, and clamping the workpiece through the workpiece clamp. The welding spot of work piece is placed between moving electrode arm 5 and the static quick-witted arm of indirect welding set, through pressure-increasing valve 1 increase moving electrode arm 5 clamp force, artifical spot welding tongs that uses connects welding head positive pole 6, the welding head negative pole, spot welding tongs current utilizes insulating shim 7 to insulate, its current conducts through first copper arm 8 and second copper arm 9 to move, static electrode arm 10 department, the current is through moving, static electrode arm 10 and work piece and utilize the resistance heat formation qualified welding spot at both interfaces, the welding is accomplished, press the opening button, the anchor clamps are opened, the manual work takes out the work piece.

The indirect welding equipment is suitable for manual and automatic welding systems, and is an efficient welding system. The welding electrode is designed to be connected with a copper arm, so that welding current is conducted, and various complex or narrow welding spots are welded; the welding head is designed to be suitable for indirect welding of various welding tongs (manual welding tongs and robot welding tongs). Through using indirect welding equipment, can promote the flexible degree of automobile body-in-white welded, improve automobile body-in-white welding quality, reduce investment cost, whole mechanism reasonable in design, easy operation can effectively improve welding efficiency.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.

Claims

1. The indirect welding device is characterized by comprising a base, an adjusting mechanism, a movable electrode arm, a static electrode arm, a welding head anode, a welding head cathode, an insulating gasket, a first copper arm and a second copper arm, wherein the adjusting mechanism is fixed on the base, a space for placing a workpiece to be welded is reserved between the movable electrode arm and the static electrode arm, the adjusting mechanism is connected with one end of the movable electrode arm and used for adjusting the angle and the welding pressure of the movable electrode arm, two ends of the first copper arm are respectively connected with the welding head anode/the welding head cathode and the static electrode arm, two ends of the second copper arm are respectively connected with the welding head cathode/the welding head anode and the movable electrode arm, and the insulating gasket is arranged between the first copper arm and the second copper arm.

2. The indirect welding apparatus of claim 1, further comprising a pressurization valve for providing pressure to the adjustment mechanism.

3. The indirect welding device of claim 2, wherein the adjusting mechanism comprises a first cylinder and a second cylinder, the base comprises an upper base and a lower base, the upper base is hinged to the lower base, a push rod of the first cylinder is hinged to the bottom of the upper base and used for driving the upper base to rotate, the movable electrode arm is hinged to the top of the upper base, and a push rod of the second cylinder is connected to the movable electrode arm and used for driving the movable electrode arm to rotate.

4. The indirect welding device of claim 3, wherein the first and second brass arms each comprise a stressed end and a conductive end, the stressed end of the first brass arm being connected to the weld head anode/weld head cathode, the conductive end of the first brass arm being connected to the static electrode arm; the pressed end of the second copper arm is connected with the welding joint cathode/the welding joint anode, the conduction end of the first copper arm is sequentially connected with an air-cooled cable and a conductive rod, and the conductive rod is tightly attached to the movable electrode arm.

5. The indirect welding device of claim 4, further comprising an insulating support base, wherein the compression end of the second copper arm is fixed on the top of the insulating support base, the compression end of the second copper arm is provided with the insulating gasket on the top, and the compression end of the first copper arm is provided on the top of the insulating gasket.

6. The indirect welding device of claim 5, wherein the moving electrode arm, the static electrode arm, the weld head positive electrode, the weld head negative electrode, the first copper arm, the second copper arm, the air-cooled cable, and the conductive rod are all made of conductive materials.

7. An indirect welding apparatus comprising the indirect welding device according to any one of claims 1 to 6, an external electrode holder, a work holder, and a holder base plate, the indirect welding device and the work holder being provided on the holder base plate, the work holder being for clamping a work to be welded, the positive electrode and the negative electrode of the external electrode holder being connected to the welding head positive electrode and the welding head negative electrode, respectively.

8. The indirect welding apparatus of claim 7, wherein at least two and more indirect welding devices are disposed in parallel on the fixture base plate.

9. The indirect welding apparatus of claim 8, wherein the work holder includes a power unit and a press arm, an output of the power unit being connected to one end of the press arm, the press arm being configured to press against a work piece to be welded.