CN217750074U - Resistance spot welding auxiliary positioning device - Google Patents
Resistance spot welding auxiliary positioning device Download PDFInfo
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- CN217750074U CN217750074U CN202221321024.3U CN202221321024U CN217750074U CN 217750074 U CN217750074 U CN 217750074U CN 202221321024 U CN202221321024 U CN 202221321024U CN 217750074 U CN217750074 U CN 217750074U
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Abstract
The utility model relates to the technical field of welding tools, in particular to a resistance spot welding auxiliary positioning device, which comprises a positioning device and a pressing device, wherein the positioning device consists of a fixed frame, a lower electrode arm, a clamping plate, a sliding rod, a pin shaft, a cylindrical roller, a magnet and a fixed table; the pressing device consists of an upper electrode arm, a fixed block, a locking screw, a positioning bolt, a spring and a pressing plate; the pressing device is positioned above the positioning device, and one side of the vertical plate of the fixing block of the pressing device, which is provided with a wedge shape, is positioned above a crack between the cylindrical roller of the positioning device and the fixing frame. The beneficial effects are as follows: the utility model discloses a device adopts positioner and closing device can realize the automatic positioning and the clamp of sample, simple structure, and convenient to use easily realizes that operating speed is fast, has eliminated personal safety hidden danger.
Description
Technical Field
The utility model relates to a welding frock technical field especially relates to a resistance spot welding auxiliary positioning device.
Background
Resistance spot welding refers to a method in which a large amount of current flows through a metal plate to be welded between electrodes under the action of certain pressure, a molten pool is formed in the metal plate to be welded due to contact resistance and joule heat, and the metal plate to be welded is connected after the molten pool is cooled and solidified, so that the resistance spot welding is the most common method for an automobile manufacturing enterprise to weld an integral automobile body on a production line, and is also a common method for a laboratory or a scientific research institution to develop a welding process and evaluate the welding performance of the metal plate. Resistance spot welding performance is usually evaluated by using several tests, including welding current range, welding spot microstructure, microhardness, welding spot mechanical property and the like, the performance test can be carried out only after the metal plate is welded, and if a corresponding welding spot auxiliary positioning device is not arranged, the problems of low welding efficiency, poor welding quality, influence on accuracy of an evaluation result and the like can be caused. Resistance spot welding can be used to join many ferrous and non-ferrous metal alloys such as carbon steel, high strength low alloy steel, stainless steel, aluminum alloys, nickel alloys, and galvanized sheet. Different metal plates have different weldability, and the stripping performance of the spot-welded joint is an important index for evaluating the weldability of the metal plates. The preparation of the peel specimens requires welding the short sides of the two L-shaped specimens together and places stringent requirements on the relative positions of the weld points.
The application number is 202021021021562.1's chinese patent, discloses a sample welding auxiliary device is peeled off to steel sheet resistance spot welding L type, including fixed centre gripping platform, bottom electrode guiding hole, last electrode guiding hole, removal centre gripping platform, connecting rod, fastening bolt, connecting plate, clamping bolt, fixed centre gripping platform is the tetragonal body shape, and the material is the nylon material, and one side is provided with the bottom electrode guiding hole, screw hole I link up to the bottom electrode guiding hole perpendicularly, the fastening bolt assembly is in screw hole I, be provided with on the working face with bottom surface vertically go up the electrode guiding hole down, the connecting rod can remove in fixed centre gripping platform. This patent suffers from the following disadvantages: when the welding device is used, manual positioning and clamping operation are needed, the operation speed is low, and the personal safety of operators is threatened by splashing existing under large welding current.
SUMMERY OF THE UTILITY MODEL
For overcoming the prior art defect, the utility model provides a technical problem provides a resistance spot welding auxiliary positioning device, adopts positioner and closing device can realize the automatic positioning and the clamp of sample, simple structure, and convenient to use easily realizes that operating speed is fast, has eliminated the personal safety hidden danger.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a resistance spot welding auxiliary positioning device comprises a positioning device and a pressing device, and is characterized in that the positioning device consists of a fixing frame, a lower electrode arm, a clamping plate, a sliding rod, a pin shaft, a cylindrical roller, a magnet and a fixing table, wherein the fixing frame is an integrally formed structural member, a positioning groove is arranged at the upper part of the fixing frame, a first through hole is formed in the bottom of the positioning groove, a chamfer is arranged on one side of the width of the positioning groove, two sliding holes are respectively arranged on two sides of the width of the positioning groove, and a groove-shaped hole is respectively arranged on two side edges of the lower part of the fixing frame; the fixed frames are arranged on the fixed table and are fixedly connected through bolts penetrating through the groove-shaped holes; the lower electrode arm is fixedly arranged on the fixed platform and is positioned right below the first through hole on the fixed frame; the two sliding rods penetrate through the sliding holes in the fixing frame, one end, close to the fixing frame, of each chamfer is fixedly connected with the clamping plate provided with the magnet, the other end of each chamfer is fixedly connected with the pin shaft, and the cylindrical roller is sleeved on the pin shaft and is rotatably connected with the pin shaft;
the pressing device consists of an upper electrode arm, a fixed block, a locking screw, a positioning bolt, a spring and a pressing plate, wherein the fixed block is of an L-shaped integrated structure and comprises a transverse plate and a vertical plate, and the lower end of the vertical plate is of a wedge-shaped structure; the upper electrode arm penetrates through the transverse plate of the fixed block from top to bottom, and two sides of the upper electrode arm are fixedly connected with the fixed block through locking screws; the four positioning bolts are uniformly distributed around the periphery of the upper electrode arm and are in sliding connection with the transverse plate of the fixed block, the lower parts of the positioning bolts are in threaded connection with a pressing plate with a second through hole in the center, and the four springs are sleeved on the positioning bolts and are positioned between the pressing plate and the transverse plate of the fixed block;
the pressing device is arranged above the positioning device, and one side of the vertical plate of the fixing block of the pressing device, which is provided with a wedge shape, is positioned above a crack between the cylindrical roller of the positioning device and the fixing frame.
The diameter of the second through hole in the pressing plate is larger than or equal to the diameter of the upper electrode arm and is + 1.0-2.0 mm.
The distance between the vertical plate of the fixing block, which is close to the side face of the upper electrode arm, and the central axis of the upper electrode arm is equal to the distance between the fixing frame, which is close to the side face of the cylindrical roller, and the central axis of the lower electrode arm.
The width of the pressing plate is smaller than that of the positioning groove on the fixing frame.
The fixed block is made of insulating materials, preferably nylon materials.
Compared with the prior art, the beneficial effects of the utility model are that:
1) By arranging the automatic positioning and clamping device, the automatic positioning and clamping of the sample can be completed by utilizing the movement of the upper electrode arm, and the use is convenient;
2) The welded sample is taken out without complex unloading action, and the sample is unloaded conveniently and quickly;
3) The width of a pressing plate of the device is smaller than that of the positioning groove, so that the device can be suitable for all samples with the thickness of the steel plate smaller than the depth of the positioning groove, and the application range is wide;
4) Simple structure, easy realization, high operation speed and elimination of personal safety hidden danger.
Drawings
FIG. 1 is a schematic view of the three-dimensional structure of the present invention;
FIG. 2 is a schematic view of the three-dimensional structure of the fixing frame of the present invention;
fig. 3 is a schematic view of the three-dimensional structure of the utility model in the using process.
In the figure: 1-fixed frame 2-groove-shaped hole 3-sliding hole 4-first through hole 5-positioning groove 6-chamfer 7-lower electrode arm 8-clamping plate 9-sliding rod 10-pin shaft 11-cylindrical roller 12-magnet 13-upper electrode arm 14-fixed block 15-locking screw 16-positioning bolt 17-spring 18-pressing plate 19-second through hole 20-first L-shaped plate 21-second L-shaped plate 22-fixed table
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
as shown in fig. 1-3, the utility model relates to a resistance spot welding auxiliary positioning device, which comprises a positioning device and a pressing device, wherein the positioning device comprises a fixed frame 1, a lower electrode arm 7, a clamping plate 8, a sliding rod 9, a pin shaft 10, a cylindrical roller 11, a magnet 12 and a fixed table 22, wherein the fixed frame 1 is an integrated structure, a positioning groove 5 is arranged at the upper part of the fixed frame 1, a first through hole 4 is arranged at the bottom of the positioning groove 5, a chamfer 6 is arranged at one side of the width of the positioning groove 5, two sides of the width of the positioning groove 5 are respectively provided with a sliding hole 3, and two side edges of the lower part of the fixed frame 1 are respectively provided with a groove-shaped hole 2; the fixed frame 1 is arranged on the fixed table 22 and is fixedly connected with the fixed table through a bolt passing through the groove-shaped hole 2; the lower electrode arm 7 is fixedly arranged on the fixed table 22 and is positioned right below the first through hole 4 on the fixed frame 1; the two slide bars 9 penetrate through the slide holes 3 on the fixed frame 1, one end of the fixed frame 1, which is close to the chamfer 6, is fixedly connected with a clamping plate 8 provided with a magnet 12, the other end of the fixed frame is fixedly connected with a pin shaft 10, and a cylindrical roller 11 is sleeved on the pin shaft 10 and is rotationally connected with the pin shaft 10;
the pressing device consists of an upper electrode arm 13, a fixed block 14, a locking screw 15, a positioning bolt 16, a spring 17 and a pressing plate 18, wherein the fixed block 14 is of an L-shaped integrated structure and comprises a transverse plate and a vertical plate, and the lower end of the vertical plate is of a wedge-shaped structure; the upper electrode arm 13 penetrates through a transverse plate of the fixed block 14 from top to bottom, and two sides of the upper electrode arm are fixedly connected with the fixed block 14 through locking screws 15; the number of the positioning bolts 16 is four, the positioning bolts are uniformly distributed around the periphery of the upper electrode arm 13 and penetrate through transverse plates of the fixing block 14 to be connected with the transverse plates of the fixing block 14 in a sliding mode, the lower portion of each positioning bolt 16 is in threaded connection with a pressing plate 18 with a second through hole 19 in the center, and the springs 17 are four and are sleeved on the positioning bolts 16 and located between the pressing plate 18 and the transverse plates of the fixing block 14;
the pressing device is arranged above the positioning device, and one side of a vertical plate of a fixing block 14 of the pressing device, which is provided with a wedge shape, is positioned above a crack between the cylindrical roller 11 of the positioning device and the fixing frame 1.
The diameter of the second through hole 19 on the pressing plate 18 is ≧ the diameter of the upper electrode arm 13 + 1.0-2.0 mm.
After the pressing device moves downwards until the vertical plate of the fixing block 14 is inserted into the gap between the cylindrical roller 11 of the positioning device and the fixing frame 1, the central line of the upper electrode arm 13 is aligned with the central line of the lower electrode arm 7.
The distance between the vertical plate of the fixing block 14 close to the side surface of the upper electrode arm 13 and the central axis of the upper electrode arm 13 is equal to the distance between the fixing frame 1 close to the side surface of the cylindrical roller 11 and the central axis of the lower electrode arm 7, namely, the upper electrode arm 13 is ensured to be superposed on the central line of the lower electrode arm 7, so that the accurate positioning of welding points is ensured.
The width of the pressing plate 18 is smaller than that of the positioning groove 5 on the fixing frame 1, so that the pressing plate is suitable for all samples of which the thickness of a steel plate to be spot-welded (the sum of the first L-shaped plate and the second L-shaped plate in the embodiment) is smaller than the depth of the positioning groove 5, and the application range is wide.
The fixing block 14 is made of an insulating material, preferably, a nylon material.
As shown in fig. 3, when in operation, the method comprises the following steps:
installing a positioning device: the fixing frame 1 is fixed on the fixing table 22 by bolts penetrating through the groove-shaped holes 2, so that the axis of the lower electrode arm 7 is superposed with the center of the first through hole 4, and the top end of the electrode tip on the lower electrode arm 7 is flush with the bottom surface of the positioning groove 5 or slightly higher than the bottom surface of the positioning groove 5, thereby ensuring that the electrode tip on the lower electrode arm 7 can be in good contact with the second L-shaped plate 21; then the fixed block 14 is connected and fastened with the upper electrode arm 13 through a locking screw 15, and the vertical plate of the fixed block 14 is parallel to the clamping plate 8;
placing a workpiece: the long edge of the second L-shaped plate 21 is inserted downwards into the gap between the clamping plate 8 and the fixing frame 1, so that the short edge of the second L-shaped plate 21 falls into the positioning groove 5, the long edge of the first L-shaped plate 20 is adsorbed on the magnet 12, and the short edge of the first L-shaped plate 20 is placed in the positioning groove 5;
positioning and clamping: the spot welding machine is operated to enable the upper electrode arm 13 to slowly descend so as to drive the fixing block 14 to slowly descend, and then the wedge-shaped head on the vertical plate of the fixing block 14 is slowly inserted into the left side of the cylindrical roller 11, so that the cylindrical roller 11 moves rightwards, and the clamping plate 8 is driven to move rightwards to the left side face of the fixing frame 1, and positioning is completed; the fixed block 14 continues to move downwards until the pressure plate 18 presses the upper short side surface of the first L-shaped plate 20, the fixed block 14 continues to descend, the spring 17 is compressed, and the first L-shaped plate 20 and the second L-shaped plate 21 are pressed tightly;
the electrode arm 13 continues to move downwards, the electrode tip on the electrode arm 13 contacts the first L-shaped plate 20 sample, the pressure is maintained, the current is supplied for a proper time, the welding is finally completed, the electrode arm 13 moves upwards to the original position after the welding is completed, the clamping plate 8 can be directly pulled open at the moment, and the first L-shaped plate 20 and the second L-shaped plate 21 which are welded together are taken out, namely the sample is stripped.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (4)
1. A resistance spot welding auxiliary positioning device comprises a positioning device and a pressing device, and is characterized in that the positioning device consists of a fixing frame, a lower electrode arm, a clamping plate, a sliding rod, a pin shaft, a cylindrical roller, a magnet and a fixing table, wherein the fixing frame is an integrally formed structural member, a positioning groove is arranged at the upper part of the fixing frame, a first through hole is formed in the bottom of the positioning groove, a chamfer is arranged on one side of the width of the positioning groove, two sliding holes are respectively arranged on two sides of the width of the positioning groove, and a groove-shaped hole is respectively arranged on two side edges of the lower part of the fixing frame; the fixed frames are arranged on the fixed table and are fixedly connected through bolts penetrating through the groove-shaped holes; the lower electrode arm is fixedly arranged on the fixed table and is positioned right below the first through hole on the fixed frame; the two sliding rods penetrate through the sliding holes in the fixing frame, one end, close to the fixing frame, of each chamfer is fixedly connected with the clamping plate provided with the magnet, the other end of each chamfer is fixedly connected with the pin shaft, and the cylindrical roller is sleeved on the pin shaft and is rotatably connected with the pin shaft;
the pressing device consists of an upper electrode arm, a fixing block, a locking screw, a positioning bolt, a spring and a pressing plate, wherein the fixing block is of an L-shaped integrated structure and comprises a transverse plate and a vertical plate, and the lower end of the vertical plate is of a wedge-shaped structure; the upper electrode arm penetrates through the transverse plate of the fixed block from top to bottom, and two sides of the upper electrode arm are fixedly connected with the fixed block through locking screws; the four positioning bolts are uniformly distributed around the periphery of the upper electrode arm and are in sliding connection with the transverse plate of the fixed block, the lower parts of the positioning bolts are in threaded connection with a pressing plate with a second through hole in the center, and the four springs are sleeved on the positioning bolts and are positioned between the pressing plate and the transverse plate of the fixed block;
the pressing device is arranged above the positioning device, and one side of the vertical plate of the fixing block of the pressing device, which is provided with a wedge shape, is positioned above a crack between the cylindrical roller of the positioning device and the fixing frame.
2. The auxiliary positioning device for resistance spot welding as claimed in claim 1, wherein the diameter of the second through hole of the pressing plate is equal to or larger than + 1.0-2.0 mm of the diameter of the upper electrode arm.
3. The auxiliary positioning device for resistance spot welding according to claim 1, wherein the distance between the side surface of the vertical plate of the fixing block close to the upper electrode arm and the central axis of the upper electrode arm is equal to the distance between the side surface of the fixing frame close to the cylindrical roller and the central axis of the lower electrode arm.
4. The auxiliary positioning device for resistance spot welding according to claim 1, wherein the width of the pressure plate is smaller than the width of the positioning groove on the fixing frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221321024.3U CN217750074U (en) | 2022-05-30 | 2022-05-30 | Resistance spot welding auxiliary positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221321024.3U CN217750074U (en) | 2022-05-30 | 2022-05-30 | Resistance spot welding auxiliary positioning device |
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| Publication Number | Publication Date |
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| CN217750074U true CN217750074U (en) | 2022-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221321024.3U Active CN217750074U (en) | 2022-05-30 | 2022-05-30 | Resistance spot welding auxiliary positioning device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116833533A (en) * | 2023-08-29 | 2023-10-03 | 南昌航空大学 | Screw/flange plug-in type resistance welding device with positioning electrode |
| CN116967583A (en) * | 2023-09-22 | 2023-10-31 | 中汽研（天津）汽车工程研究院有限公司 | Spot welding sample preparation test system and clamping device |
-
2022
- 2022-05-30 CN CN202221321024.3U patent/CN217750074U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116833533A (en) * | 2023-08-29 | 2023-10-03 | 南昌航空大学 | Screw/flange plug-in type resistance welding device with positioning electrode |
| CN116833533B (en) * | 2023-08-29 | 2023-11-07 | 南昌航空大学 | Screw/flange plug-in type resistance welding device with positioning electrode |
| CN116967583A (en) * | 2023-09-22 | 2023-10-31 | 中汽研（天津）汽车工程研究院有限公司 | Spot welding sample preparation test system and clamping device |
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