CN220407403U - Eccentric electrode spot welding gun - Google Patents
Eccentric electrode spot welding gun Download PDFInfo
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- CN220407403U CN220407403U CN202321887175.XU CN202321887175U CN220407403U CN 220407403 U CN220407403 U CN 220407403U CN 202321887175 U CN202321887175 U CN 202321887175U CN 220407403 U CN220407403 U CN 220407403U
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- 238000003466 welding Methods 0.000 title claims abstract description 58
- 230000003068 static effect Effects 0.000 claims description 28
- 239000002184 metal Substances 0.000 claims description 16
- 230000007246 mechanism Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 238000003825 pressing Methods 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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Abstract
The utility model provides an eccentric electrode spot welding gun, and relates to the technical field of automobile welding production. The eccentric electrode spot welding gun comprises a gun body, a driving unit, a movable electrode, an electrostatic electrode assembly, a first connecting rod, an input connecting rod, an output connecting rod and a second connecting rod, wherein the first connecting rod, the input connecting rod, the output connecting rod and the second connecting rod are sequentially hinged to form a quadrilateral, the electrostatic electrode assembly is arranged on the gun body, the first connecting rod is connected with the gun body, the driving unit is arranged on the gun body, the output end of the driving unit is in driving connection with the input connecting rod, the output connecting rod is connected with the movable electrode, and the driving unit drives the output connecting rod to swing through the input connecting rod so as to drive the movable electrode to move far away from or towards the direction of the electrostatic electrode assembly. The first connecting rod, the input connecting rod, the output connecting rod and the second connecting rod form a connecting rod mechanism, so that larger torque can be born, and the problem that the use of the conventional eccentric electrode spot welding gun is limited can be solved.
Description
Technical Field
The utility model relates to the technical field of automobile welding production, in particular to an eccentric electrode spot welding gun.
Background
Spot welding is a resistance welding process mainly used to weld two or more metal plates together by applying pressure and heat to a welding area.
Currently, in an automobile welding process, an eccentric electrode spot welding gun is a part for performing a spot welding operation, which is commonly used in a spot welding process, and the eccentric electrode spot welding gun generally includes a gun body, and a driving element, a movable electrode and an electrostatic electrode, which are assembled on the gun body, wherein the driving element drives the movable electrode to move to a spot welding position through, for example, a linear guide rail or a linear bearing, and the movable electrode and the electrostatic electrode apply pressure and current to a metal plate under the driving of the driving element. However, the linear guide rail or the linear bearing, etc., cannot bear a large torque as a motion restraining element of the electrode, which makes the use of the existing eccentric electrode spot welding gun limited.
Disclosure of Invention
The utility model solves the problems that: how to solve the problem that the use of the prior eccentric electrode spot welding gun is limited.
In order to solve the problems, the utility model provides an eccentric electrode spot welding gun, which comprises a gun body, a driving unit, a movable electrode, an electrostatic electrode assembly, a first connecting rod, an input connecting rod, an output connecting rod and a second connecting rod, wherein the first connecting rod, the input connecting rod, the output connecting rod and the second connecting rod are sequentially hinged to form a quadrangle, the electrostatic electrode assembly is arranged on the gun body, the first connecting rod is connected with the gun body, the driving unit is arranged on the gun body, the output end of the driving unit is in driving connection with the input connecting rod, the output connecting rod is connected with the movable electrode, and the driving unit drives the output connecting rod to swing through the input connecting rod so as to drive the movable electrode to move in the direction away from or towards the electrostatic electrode assembly.
Optionally, the first link, the input link, the output link, and the second link are all hinged on the same plane.
Optionally, two limiting grooves are formed in the length direction of the output connecting rod, and the input connecting rod and the second connecting rod are hinged with the output connecting rod in the limiting grooves respectively.
Optionally, a connection part extending towards the driving unit is arranged on the input connecting rod, and an output end of the driving unit is hinged with the connection part.
Optionally, a mounting groove is formed at one end of the output connecting rod, which is away from the driving unit, and the movable electrode is arranged in the mounting groove.
Optionally, the movable electrode is arranged in a Z-shaped structure, one end of the movable electrode is arranged in the mounting groove, and the other end of the movable electrode is positioned below the output connecting rod.
Optionally, the electrostatic electrode assembly includes static arm and electrostatic electrode, the one end of static arm with the rifle body is connected, and the other end is provided with the spread groove, the one end of static electrode is connected in the spread groove, the other end orientation the movable electrode extends.
Optionally, the gun body comprises two parallel sheet metal plates, and the static arm is connected between the two sheet metal plates.
Optionally, a transformer for outputting current is further arranged on the gun body.
Optionally, the driving unit is configured as a servo motor.
Compared with the prior art, the eccentric electrode spot welding gun is hinged with the first connecting rod, the input connecting rod, the output connecting rod and the second connecting rod in sequence, the first connecting rod, the input connecting rod, the output connecting rod and the second connecting rod form a quadrilateral connecting rod mechanism, and after the first connecting rod is connected with the gun body, the input connecting rod and the second connecting rod support the output connecting rod, so that the output connecting rod can be supported from the input connecting rod and the second connecting rod, and is arranged on the gun body through the static electrode assembly, the output connecting rod is connected with the movable electrode, the static electrode assembly is kept stable under the support of the gun body, the movable electrode has a motion degree of freedom under the support of the output connecting rod, and the driving unit is arranged on the gun body through the driving unit and is in driving connection with the input connecting rod, so that the movable electrode is driven to move far away from or towards the static electrode assembly through the swing of the output connecting rod, and the static electrode assembly can perform spot welding operation.
Drawings
Fig. 1 is a schematic view of an eccentric electrode spot welding gun according to an embodiment of the present utility model.
Reference numerals illustrate:
1-a gun body; a 2-drive unit; 3-a movable electrode; 4-an electrostatic pole assembly; 41-static arm; 42-static electrode; 5-a first link; 6-an input link; 61-connecting part; 7-an output link; 71-a limit groove; 8-a second link; 9-transformers.
Detailed Description
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
The Z-axis in the drawing represents vertical, i.e., up-down position, and the positive direction of the Z-axis (i.e., the arrow of the Z-axis points) represents up, and the negative direction of the Z-axis (i.e., the direction opposite to the positive direction of the Z-axis) represents down; in the drawings, the X-axis represents a horizontal position, and the positive direction of the X-axis (i.e., the arrow of the X-axis is pointed) represents the left side, and the negative direction of the X-axis (i.e., the direction opposite to the positive direction of the X-axis) represents the right side; the Y-axis in the drawing shows the front-back position, and the positive direction of the Y-axis (i.e., the arrow of the Y-axis points) shows the front side, and the negative direction of the Y-axis (i.e., the direction opposite to the positive direction of the Y-axis) shows the rear side. It should also be noted that the foregoing Z-axis, Y-axis, and X-axis are meant to be illustrative only and not indicative or implying that the apparatus or component in question must be oriented, configured or operated in a particular orientation, and therefore should not be construed as limiting the utility model.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein.
Spot welding is a resistance welding process mainly used to weld two or more metal plates together by applying pressure and heat to a welding area.
Currently, in an automobile welding process, an eccentric electrode spot welding gun is a part for performing a spot welding operation, which is commonly used in a spot welding process, and the eccentric electrode spot welding gun generally includes a gun body, and a driving element, a movable electrode and an electrostatic electrode, which are assembled on the gun body, wherein the driving element drives the movable electrode to move to a spot welding position through, for example, a linear guide rail or a linear bearing, and the movable electrode and the electrostatic electrode apply pressure and current to a metal plate under the driving of the driving element. However, the linear guide rail or the linear bearing and the like cannot bear large torque as a motion restraining element of the movable electrode, so that the welding pressure cannot generally exceed 3000N, and some welding spots requiring large welding pressure are limited in use, so that the use of the conventional eccentric electrode spot welding gun is limited.
Referring to fig. 1, the utility model provides an eccentric electrode spot welding gun, which comprises a gun body 1, a driving unit 2, a movable electrode 3, an electrostatic electrode assembly 4, a first connecting rod 5, an input connecting rod 6, an output connecting rod 7 and a second connecting rod 8 which are sequentially hinged to form a quadrangle, wherein the electrostatic electrode assembly 4 is arranged on the gun body 1, the first connecting rod 5 is connected with the gun body 1, the driving unit 2 is arranged on the gun body 1, the output end of the driving unit 2 is in driving connection with the input connecting rod 6, the output connecting rod 7 is connected with the movable electrode 3, and the driving unit 2 drives the output connecting rod 7 to swing through the input connecting rod 6 so as to drive the movable electrode 3 to move away from or towards the direction of the electrostatic electrode assembly 4.
In this embodiment, the "quadrangle" refers to a geometric figure formed by connecting four hinge points, and the shape and structure of the first link 5, the input link 6, the output link 7, and the second link 8 are not strictly required, that is, the first link 5, the input link 6, the output link 7, and the second link 8 are not necessarily required to be linear links.
Specifically, the first connecting rod 5, the input connecting rod 6, the output connecting rod 7 and the second connecting rod 8 are sequentially hinged in the clockwise direction, the first connecting rod 5 is parallel to the output connecting rod 7, the input connecting rod 6 is parallel to the second connecting rod 8, the first connecting rod 5 is connected with the gun body 1 through bolts or welded, the driving unit 2 is connected with the gun body 1 through bolts, the input connecting rod 6 refers to a connecting rod connected with the output end of the driving unit 2, the output connecting rod 7 refers to a connecting rod connected with the movable electrode 3, the output end of the driving unit 2 is in driving connection with the input connecting rod 6, the movable electrode 3 is connected with one end of the output connecting rod 7 far away from the input connecting rod 6, one end of the electrostatic electrode assembly 4 is connected with the gun body 1 through bolts, the other end extends towards the movable electrode 3 and is opposite to the movable electrode 3, during spot welding, the driving unit 2 drives the input connecting rod 6 to swing leftwards, the input connecting rod 6 and the second connecting rod 8 swing synchronously, so that a quadrangle formed by the first connecting rod 5, the input connecting rod 6, the output connecting rod 7 and the second connecting rod 8 is deformed, the output connecting rod 7 can equivalently move in a leftward straight line under the support of the input connecting rod 6 and the second connecting rod 8, the movable electrode 3 can press a metal plate to be welded with the electrostatic electrode assembly 4 under the drive of the output connecting rod 7, the metal plate is welded by heat generated by current flow, and in the welding process, the input connecting rod 6 and the second connecting rod 8 keep the stress of the output connecting rod 7 stable, for example, when the output connecting rod 7 bears upward torque, the input connecting rod 6 and the second connecting rod 8 apply downward supporting force to the output connecting rod 7, and the supporting force realizes the offset of the torque; when the output link 7 is subjected to a downward torque, the input link 6 and the second link 8 exert an upward pulling force on the output link 7, which force effects a torque cancellation. In another embodiment, with the continuous progress of spot welding, the loss of the movable electrode 3 and the stationary electrode 42 (described later), the offset occurs between the axes of the movable electrode 3 and the stationary electrode 42 (described later) after the repair, so that the distance between the movable electrode 3 and the stationary electrode 42 (described later) is gradually increased, and according to this situation, the first connecting rod 5 and the output connecting rod 7 can be arranged approximately in parallel, that is, the axes of the first connecting rod 5 and the output connecting rod 7 have smaller offset angles, so that the four connecting rods can form a special quadrangle, and the movable electrode 3 and the stationary electrode 42 (described later) can have better coaxiality before the repair and after the repair.
In this embodiment, the first link 5, the input link 6, the output link 7 and the second link 8 are sequentially hinged, the first link 5, the input link 6, the output link 7 and the second link 8 form a quadrilateral link mechanism, and after the first link 5 is connected with the gun body 1, the input link 6 and the second link 8 support the output link 7, so that the output link 7 can be supported from the input link 6 and the second link 8, and is arranged on the gun body 1 through the static electrode assembly 4, the output link 7 is connected with the movable electrode 3, the static electrode assembly 4 is kept stable under the support of the gun body 1, the movable electrode 3 has a degree of freedom of movement under the support of the output link 7, the driving unit 2 is arranged on the gun body 1 and is in driving connection with the input link 6 through the output end of the driving unit 2, and the swinging of the driving unit 2 is used for driving the movable electrode 3 to move away from or towards the static electrode assembly 4, and the static electrode assembly 4 can perform spot welding operation, thus, compared with the existing novel eccentric electrode can be applied to the output link 7 through a linear guide rail or a linear bearing, and the output of the output link 7 can be applied to the output link 7, and the problem of the conventional novel eccentric electrode is solved, and the output torque is limited when the output link 7 is used as the linear bearing 7, and the output link 7 is driven, and the output is applied to the output 7 is more stable.
Alternatively, as shown in connection with fig. 1, the first link 5, the input link 6, the output link 7 and the second link 8 are all hinged on the same plane.
Specifically, the two ends of the input connecting rod 6 are respectively provided with a first connecting groove, the groove depth direction of the first connecting groove is consistent with the length direction of the input connecting rod 6, the first connecting groove penetrates through the end part of the input connecting rod 6 along the width direction of the input connecting rod 6, the two ends of the second connecting rod 8 are respectively provided with a second connecting groove, the groove depth direction of the second connecting groove is consistent with the length direction of the second connecting rod 8, the second connecting groove penetrates through the end part of the second connecting rod 8 along the width direction of the second connecting rod 8, the first connecting rod 5 is hinged with the input connecting rod 6 and the second connecting rod 8 in the first connecting groove and the second connecting groove respectively, the output connecting rod 7 is hinged with the input connecting rod 6 and the second connecting rod 8 in the first connecting groove and the second connecting groove respectively, so that the first connecting rod 5, the input connecting rod 6, the output connecting rod 7 and the second connecting rod 8 are all hinged on the same plane, the first connecting rod 5 and the output connecting rod 7 are on the same plane, the first connecting rod 5 and the second connecting rod 8 can be hinged with the input connecting rod 6 and the second connecting rod 8 on the side surface, the first connecting rod 5 is hinged with the second connecting rod 8 on the side surface 6 and the second connecting rod 8 respectively, but the input connecting rod 8 is required to be hinged with the input connecting rod 6 and the second connecting rod 8 on the side surface 8 and the input connecting rod 8 is larger than the input connecting rod 8 is hinged with the input connecting rod 8.
In this way, the first connecting rod 5, the input connecting rod 6, the output connecting rod 7 and the second connecting rod 8 are all hinged on the same plane, so that the space requirement of the input connecting rod 6 and the second connecting rod 8 on the output connecting rod 7 and the first connecting rod 5 in the axial direction of the hinged position can be reduced, and the assembly of the first connecting rod 5, the input connecting rod 6, the output connecting rod 7 and the second connecting rod 8 is facilitated.
Optionally, as shown in fig. 1, two limiting grooves 71 are provided in the length direction of the output link 7, and the input link 6 and the second link 8 are hinged with the output link 7 in the limiting grooves 71, respectively.
Specifically, in combination with the foregoing, the two limit grooves 71 are provided on the side face of the output link 7 in the axial direction of the hinge, the input link 6 and the second link 8 are respectively hinged with the output link 7 in the limit grooves 71, and the input link 6 and the second link 8 are respectively swung in the limit grooves 71.
In this way, through being provided with two spacing grooves 71 in the length direction of output connecting rod 7, input connecting rod 6 and second connecting rod 8 are articulated with output connecting rod 7 respectively in spacing groove 71 for input connecting rod 6 and second connecting rod 8 swing respectively in spacing groove 71, and the cell wall of spacing groove 71 can carry out spacing to the swing of input connecting rod 6 and second connecting rod 8, and the swing angle of input connecting rod 6 and second connecting rod 8 is restricted to spacing groove 71, in order to avoid input connecting rod 6 and second connecting rod 8's swing angle too big to cause movable electrode 3 and sheet metal rigid collision.
Alternatively, as shown in connection with fig. 1, the input link 6 is provided with a connection portion 61 extending towards the drive unit 2, and the output end of the drive unit 2 is hinged to the connection portion 61, so that the connection portion 61 extends towards the drive unit 2 to facilitate connection between the input link 6 and the drive unit 2.
Optionally, as shown in connection with fig. 1, an end of the output connecting rod 7 facing away from the driving unit 2 is provided with a mounting groove, and the movable electrode 3 is disposed in the mounting groove, so that during spot welding, the mounting groove can realize limiting of the movable electrode 3, so that the movable electrode 3 can keep stability of pressing a metal plate to be welded under the support of the mounting groove.
Alternatively, as shown in connection with fig. 1, the movable electrode 3 is provided in a Z-shaped structure, one end of the movable electrode 3 is provided in the mounting groove, and the other end is located below the output link 7.
Specifically, the movable electrode 3 is configured in a Z-shaped structure (alternatively, other similar equivalent structures such as L may be used), one end of the movable electrode 3 is disposed in the mounting groove, and the other end is located below the output link 7 (i.e., the side of the output link 7 facing away from the first link 5).
Therefore, one end of the movable electrode 3 with the Z-shaped structure is arranged in the mounting groove, the other end of the movable electrode 3 is positioned below the output connecting rod 7, the space occupation of the movable electrode 3 in the length direction of the output connecting rod 7 can be reduced at one end of the movable electrode 3 positioned below the output connecting rod 7, and the dislocation distribution of the output connecting rod 7 and one end of the movable electrode 3 positioned below the output connecting rod 7 is realized, so that interference with a metal plate to be spot-welded in the movement process of the output connecting rod 7 is avoided.
Alternatively, as shown in fig. 1, the electrostatic electrode assembly 4 includes a static arm 41 and an electrostatic electrode 42, one end of the static arm 41 is connected with the gun body 1, the other end is provided with a connecting groove, one end of the static electrode 42 is connected in the connecting groove, and the other end extends toward the movable electrode 3.
Specifically, the whole static arm 41 is in a C-shaped structure, one end of the static arm 41 is connected with the gun body 1 through a bolt, the other end faces downwards and is provided with a connecting groove, one end of the static electrode 42 is connected with the connecting groove, and the other end can extend towards the movable electrode 3 along an L-shaped path. Thus, one end of the static arm 41 is connected with the gun body 1, the other end is provided with a connecting groove, one end of the static electrode 42 is connected in the connecting groove, the other end extends towards the movable electrode 3, and the connecting groove provides supporting force for the static electrode 42 so as to keep the static electrode 42 stable in the spot welding process.
Alternatively, as shown in connection with fig. 1, the gun body 1 comprises two parallel sheet metal plates, between which the static arm 41 is connected, so that the two sheet metal plates achieve clamping of the static arm 41, thereby keeping the static arm 41 stable during spot welding.
Optionally, as shown in connection with fig. 1, the gun body 1 is further provided with a transformer 9 for outputting current.
Specifically, after the movable electrode 3 and the stationary electrode 42 apply pressure to the metal plate at the spot welding position, the transformer 9 outputs a current that flows through the movable electrode 3, the stationary electrode 42, and the metal plate to generate a current that satisfies the spot welding.
Therefore, the transformer 9 for outputting current is further arranged on the gun body 1, and the transformer 9 can adjust the current so as to facilitate the use of the novel eccentric electrode spot welding gun.
Alternatively, as shown in connection with fig. 1, the drive unit 2 is provided as a servomotor, the output of which can be connected in a driving manner to the input link 6 via a rack and pinion. Wherein, can also replace servo motor with servo cylinder, servo cylinder's output is articulated with input connecting rod 6, so, is convenient for improve the control accuracy of drive unit 2, and then is convenient for adjust the pressure of appling the sheetmetal when spot welding.
Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the utility model.
Claims (10)
1. The utility model provides an eccentric electrode spot welding gun, its characterized in that includes body of a gun (1), drive unit (2), movable electrode (3), electrostatic electrode subassembly (4) to and articulated in proper order in order to enclose square first connecting rod (5), input connecting rod (6), output connecting rod (7) and second connecting rod (8), electrostatic electrode subassembly (4) set up on body of a gun (1), first connecting rod (5) with body of a gun (1) are connected, drive unit (2) set up on body of a gun (1) and the output of drive unit (2) with input connecting rod (6) drive connection, output connecting rod (7) with movable electrode (3) are connected, drive unit (2) are passed through input connecting rod (6) drive output connecting rod (7) swing, in order to drive movable electrode (3) are kept away from or are towards movement on electrostatic electrode subassembly (4) orientation.
2. Eccentric electrode spot welding gun according to claim 1, characterized in that the first link (5), the input link (6), the output link (7) and the second link (8) are all hinged on the same plane.
3. Eccentric electrode spot welding gun according to claim 2, characterized in that the output link (7) is provided with two limit grooves (71) in its length direction, the input link (6) and the second link (8) being hinged with the output link (7) within the limit grooves (71), respectively.
4. Eccentric electrode spot welding gun according to claim 1, characterized in that the input link (6) is provided with a connection (61) extending towards the drive unit (2), the output of the drive unit (2) being hinged to the connection (61).
5. Eccentric electrode spot welding gun according to claim 4, characterized in that the end of the output link (7) facing away from the drive unit (2) is provided with a mounting groove in which the movable electrode (3) is arranged.
6. The eccentric electrode spot welding gun according to claim 5, characterized in that the movable electrode (3) is arranged in a Z-shaped configuration, one end of the movable electrode (3) is arranged in the mounting groove, and the other end is positioned below the output connecting rod (7).
7. Eccentric electrode spot welding gun according to claim 6, characterized in that the electrostatic electrode assembly (4) comprises a static arm (41) and an electrostatic electrode (42), one end of the static arm (41) is connected with the gun body (1), the other end is provided with a connecting groove, one end of the electrostatic electrode (42) is connected in the connecting groove, and the other end extends towards the movable electrode (3).
8. Eccentric electrode spot welding gun according to claim 7, characterized in that the gun body (1) comprises two parallel sheet metal plates, between which the static arm (41) is connected.
9. Eccentric electrode spot welding gun according to claim 1, characterized in that the gun body (1) is further provided with a transformer (9) for outputting electric current.
10. Eccentric electrode spot welding gun according to claim 1, characterized in that the drive unit (2) is provided as a servo motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321887175.XU CN220407403U (en) | 2023-07-18 | 2023-07-18 | Eccentric electrode spot welding gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321887175.XU CN220407403U (en) | 2023-07-18 | 2023-07-18 | Eccentric electrode spot welding gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220407403U true CN220407403U (en) | 2024-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321887175.XU Active CN220407403U (en) | 2023-07-18 | 2023-07-18 | Eccentric electrode spot welding gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220407403U (en) |
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2023
- 2023-07-18 CN CN202321887175.XU patent/CN220407403U/en active Active
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