CN213379803U

CN213379803U - Single-face H-shaped spot welding tongs

Info

Publication number: CN213379803U
Application number: CN202020369013.7U
Authority: CN
Inventors: 陈良军; 付振斌; 吴源勇
Original assignee: SHENZHEN HONGBAI TECHNOLOGY INDUSTRIAL CO LTD
Current assignee: SHENZHEN HONGBAI TECHNOLOGY INDUSTRIAL CO LTD
Priority date: 2020-03-23
Filing date: 2020-03-23
Publication date: 2021-06-08
Anticipated expiration: 2030-03-23

Abstract

A single-sided H-shaped spot welding clamp comprises a movable electrode assembly, an electrode arm assembly, a fixed support assembly, a hard connecting assembly and a transformer assembly; the fixed support assembly is arranged on the robot through a tailstock flange; transformer subassembly, activity electrode subassembly and electrode arm unit mount are in on the fixed bolster subassembly, hard coupling assembling with activity electrode subassembly and electrode arm subassembly are connected, the transformer unit mount is in on the hard coupling assembling.

Description

Single-face H-shaped spot welding tongs

Technical Field

The utility model belongs to the technical field of welding equipment, specifically relate to a single face H type spot welding tongs. The electric resistance heat generated by the current passing through the workpiece and the contact surface thereof can be utilized to locally melt the contact surface, and the welding is completed under the action of pressure, and the welding range is wider than that of the traditional welding.

Background

Welding is an important and common process for firmly joining metals, and spot welding, one of them, is widely used in the manufacturing industry. The two metals are melted and fused by clamping the two metals and instantly passing large current in a small contact surface, and the effect of fixing after cooling is achieved. The spot welding process does not damage the internal structure of the workpiece, and other welding materials are not required to be added.

The single-side spot welding technology is used as a special form of common pressure spot welding, can meet the principle requirement of common spot welding, has the characteristics of the single-side spot welding technology, can ensure certain connecting strength under the condition of common spot welding, and can weld workpieces which cannot be welded by double-side spot welding.

The automation requirements of the manufacturing and processing industries such as domestic vehicle manufacturing, die manufacturing and the like on spot welding equipment are higher and higher, the types of workpieces are more and more, the required spot welding tongs are different, and the future development trend of the spot welding tongs is about to be realized.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a single face H type spot welding tongs has and saves the cost, simple structure, convenient operation, and is efficient, and the range of application is wide, and the quality is guaranteed.

The utility model discloses technical scheme as follows: a single-sided H-shaped spot welding clamp comprises a movable electrode assembly, an electrode arm assembly, a fixed support assembly, a hard connecting assembly and a transformer assembly; the fixed support assembly is arranged on the robot through a tailstock flange; transformer subassembly, activity electrode subassembly and electrode arm unit mount are in on the fixed bolster subassembly, hard coupling assembling with activity electrode subassembly and electrode arm subassembly are connected, the transformer unit mount is in on the hard coupling assembling.

Furthermore, the movable electrode assembly comprises a movable electrode rod, a movable electrode chuck, a first pressing block and an air cylinder connecting seat; the electrode arm assembly comprises an electrode arm, an electrode arm end face copper strip, an electrode arm connecting block, a nitrogen cylinder connecting seat, a nitrogen cylinder fixing seat and a second clamping block; the fixed support assembly comprises a bottom plate, a side plate, a transformer mounting plate, an air servo module mounting plate, an air cylinder and a sliding block; the hard connecting assembly comprises a first water passing plate, a second water passing plate, a third water passing plate, a fourth water passing plate, a first movable copper strip and a second movable copper strip; the transformer assembly comprises a transformer, an anode fixing block, a cathode fixing block and a total water inlet and outlet block.

Further, the electrode arm subassembly by electrode arm terminal surface copper strips is installed on the electrode arm, the electrode arm passes through the second presss from both sides tight piece and installs on the electrode arm connecting block, the electrode arm connecting block is installed on the nitrogen cylinder connecting seat, the nitrogen cylinder connecting seat is used for installing and fixing nitrogen cylinder and nitrogen gas cylinder fixing base, install the safety cover on the nitrogen cylinder fixing base, be used for the protection the nitrogen cylinder reaches slide rail, slider. The nitrogen cylinder acts as a buffer and when it is compressed a relatively constant reaction force is obtained. During welding, the electrode tip connected with the nitrogen cylinder firstly contacts the surface of a welded plate, then the robot drives the whole welding tongs to press down, at the moment, the nitrogen cylinder can compress for a distance, then the other electrode tip is driven by the cylinder to press the welded plate, and then the welding is conducted. Because conventional spot welding is that two electrode tips are located the both sides that need weld the plate respectively, and the technical scheme of the utility model adopt that two electrode tips are located the same face that needs weld the plate, consequently the utility model relates to a single face H type spot welding tongs.

Furthermore, the movable electrode assembly is formed by installing the movable electrode chuck on the cylinder connecting seat, and the movable electrode rod is installed on the movable electrode chuck through the first clamping block.

Further, install slide rail, slider and cylinder on the fixed bolster subassembly, the cylinder is installed on the cylinder connecting seat, the cylinder connecting seat is installed on the slider, be used for the assistance movable electrode assembly's support direction.

Further, the nitrogen cylinder connecting seat is installed on the nitrogen cylinder, and the nitrogen cylinder is installed on the nitrogen cylinder fixing seat and used for adjusting the position of the auxiliary electrode arm.

Furthermore, the fixed support assembly is formed by installing side plates on two sides of the bottom plate respectively, the transformer installation plate is installed on the side plates, the air servo module installation plate is installed on the transformer installation plate, and the air servo module is installed on the air servo module installation plate; the detection device comprises a base plate, a side plate, a cylinder base plate, a tail seat flange, a proximity switch mounting block and a proximity switch mounting block, wherein the base plate is provided with a rib plate, the rib plate is connected with the side plate, the cylinder base plate is also mounted on the base plate, the cylinder is also mounted on the base plate through the cylinder base plate, the tail seat flange is mounted on the side plate, the base plate is provided with the proximity switch mounting block, and the proximity switch is mounted on the proximity switch mounting block and used for assisting retraction.

Furthermore, a grinding limiting plate is mounted on the rib plate and used for assisting in supporting and positioning grinding of the electrode cap.

Furthermore, the positive fixing block and the negative fixing block are respectively installed on a positive electrode and a negative electrode of the transformer, the first water passing plate is installed on the positive fixing block, the first water passing plate is connected with the third water passing plate through the first movable copper strip, the third water passing plate is installed on the electrode arm assembly, the second water passing plate is connected with the negative fixing block through the second movable copper strip, the second water passing plate is installed on the fourth water passing plate, and the fourth water passing plate is installed on the movable electrode assembly.

Furthermore, the spot welding pliers are provided with a total water inlet and outlet block, the total water inlet and outlet block is installed on the fixed support component through a base plate, and a plurality of total water inlet and outlet joints are installed on the total water inlet and outlet block.

The utility model has the advantages that,

1. compact structure, easy maintenance, small volume, greatly reduced labor intensity of workers and greatly saved energy consumption.

2. The electrode arm and the electrode rod of the single-sided spot welding tongs adopt high-quality chromium-zirconium-copper C18015 and C18000, so that the stability of welding performance, the service life of a welding machine and the strength of the electrode arm are ensured.

3. The drift diameter of the gas path system of the single-side spot welding tongs is large, and an inlet pneumatic element is matched, so that the action of the welding tongs is rapid, and the production efficiency is improved.

4. During welding, the heating time is short, the heat is concentrated, no electric arc, no spark splash, no welding slag, no fusion welding accumulation and no thermal deformation of a welding piece are caused. After the welder is innovated, the drift diameter of the gas path system is increased, so that the welding production rate is high, the energy consumption is low, the appearance of a weldment is beautiful, and the quality is good.

5. The welding is completed by the proper matching of resistance heat and mechanical force, so that a high-strength and high-quality welding spot of a welding element nugget can be obtained.

6. The welding process is simple, and the welding process does not need filling materials, solvents or protective gases, so the cost is low.

7. Because the current density of the welding spot of the weldment is high and the temperature is also high, the welding spot obtains the nugget size with good repeatability after the electrifying time is accurately controlled by the welding machine controller, and the welding machine can be suitable for welding various metals and coated steel plates with the same kind or different kinds.

8. The single-side spot welding tongs change the conduction angle of the thyristor through the welding machine controller to regulate heat, so the single-side spot welding tongs are easy to realize mechanization and automation, and can be matched with a robot to carry out full-automatic welding operation.

Drawings

Fig. 1 is a perspective view of a single-sided H-shaped spot welding tongs according to an embodiment of the present invention.

Fig. 2 is another perspective view of a single-sided H-spot welding tongs according to an embodiment of the present invention.

Fig. 3 is a front view of a single-sided H-spot welding tongs according to an embodiment of the present invention.

Fig. 4 is a cross-sectional view taken along the plane a-a in fig. 3.

In the figure, 1, a movable electrode rod; 2. a first clamping block; 3. a movable electrode rod chuck; 4. copper strips on the end faces of the electrode arms; 5. is an electrode arm; 6. a second clamping block; 7. an electrode arm connecting block; 8. a negative electrode fixing block; 9. a positive electrode fixing block; 10. a first water passing plate; 11. a transformer; 12. a third water passing plate; 13. a first movable copper strip; 14. a side plate; 15. a transformer mounting plate; 16. a tailstock flange; 17. a fourth water passing plate; 18. a second water passing plate; 19. a second movable copper strip; 20. a base plate; 21. a cylinder connecting seat; 22. a proximity switch mounting block; 23. grinding the limiting plate; 24. a rib plate; 25. a cylinder; 26. a cylinder liner plate; 27. a total water inlet and outlet block; 28. a gas servo module; 29. a nitrogen cylinder connecting seat; 30. a nitrogen cylinder; 31. a nitrogen cylinder fixing seat; 32. a protective cover; 33. a slider; 34. a slide rail; 35. air servo module mounting panel.

Detailed Description

The technical solution of the present invention will be described in detail with reference to the accompanying drawings and embodiments.

As shown in fig. 1, 2, 3 and 4, a single-sided H-spot welding tongs includes a movable electrode assembly, an electrode arm assembly, a stationary bracket assembly, a rigid connection assembly, and a transformer assembly; the fixed support assembly is arranged on the robot through a tailstock flange; transformer subassembly, activity electrode subassembly and electrode arm unit mount are in on the fixed bolster subassembly, hard coupling assembling with activity electrode subassembly and electrode arm subassembly are connected, the transformer unit mount is in on the hard coupling assembling.

Furthermore, the movable electrode assembly comprises a movable electrode rod (1), a movable electrode chuck (1), a first pressing block (2) and an air cylinder connecting seat (21); the electrode arm assembly comprises an electrode arm (5), an electrode arm end face copper strip (4), an electrode arm connecting block (7), a nitrogen cylinder connecting seat (29), a nitrogen cylinder (30), a nitrogen cylinder fixing seat (31) and a second clamping block (6); the fixed support assembly comprises a bottom plate (20), a side plate (14), a transformer mounting plate (15), an air servo module mounting plate (35), an air cylinder (25) and a sliding block (33); the hard connecting assembly comprises a first water passing plate (10), a second water passing plate (18), a third water passing plate (12), a fourth water passing plate (17), a first movable copper strip (13) and a second movable copper strip (19); the transformer assembly comprises a transformer (11), a positive fixing block (9), a negative fixing block (8) and a total water inlet and outlet block (27).

Furthermore, the movable electrode assembly is formed by installing the movable electrode chuck (3) on the cylinder connecting seat (21), and the movable electrode rod (1) is installed on the movable electrode chuck through the first clamping block (2).

Further, install slide rail (34), slider (33) and cylinder (25) on the fixed bolster subassembly, the cylinder is installed on cylinder connecting seat (21), cylinder connecting seat (21) are installed on slider (33), be used for the assistance movable electrode assembly's support direction.

Further, the electrode arm subassembly by electrode arm terminal surface copper strips (4) are installed on electrode arm (5), the electrode arm passes through the second presss from both sides tight piece (6) and installs on electrode arm connecting block (7), install electrode arm connecting block (7) on nitrogen cylinder connecting seat (29), nitrogen cylinder connecting seat is used for installing and fixing nitrogen cylinder (30) and nitrogen gas jar fixing base (31), install safety cover (32) on the nitrogen cylinder fixing base, be used for the protection the nitrogen cylinder reaches slide rail, slider.

Furthermore, the fixed bracket assembly is formed by installing the side plates (14) on two sides of the bottom plate (20) respectively, the transformer installation plate (15) is installed on the side plates, the air servo module installation plate (35) is installed on the transformer installation plate, and the air servo module (28) is installed on the air servo module installation plate; the detection device is characterized in that a rib plate (24) is installed on the bottom plate, the rib plate is connected with the side plate, a cylinder base plate (26) is also installed on the bottom plate, the cylinder is also installed on the bottom plate through the cylinder base plate, the tailstock is installed on the side plate through a flange, a proximity switch installation block (22) is installed on the bottom plate, and a proximity switch is installed on the proximity switch installation block (22) and used for assisting retraction detection of the movable electrode assembly.

Furthermore, a coping limiting plate (23) is arranged on the rib plate and used for assisting in supporting and positioning the coping of the electrode cap.

Furthermore, the positive fixing block (9) and the negative fixing block (8) are respectively installed on the positive electrode and the negative electrode of the transformer (11), the first water passing plate (10) is installed on the positive fixing block, the first water passing plate is connected with the third water passing plate (12) through the first movable copper strip (13), the third water passing plate is installed on the electrode arm assembly, the second water passing plate (18) is connected with the negative fixing block (8) through the second movable copper strip (19), the second water passing plate (18) is installed on the fourth water passing plate (17), and the fourth water passing plate is installed on the movable electrode assembly.

Furthermore, the spot welding pliers are provided with a total water inlet and outlet block (27), the total water inlet and outlet block is installed on the fixed support component through a base plate, and a plurality of total water inlet and outlet joints are installed on the total water inlet and outlet block.

The above description relates to only some embodiments of the present invention, and any replacement or modification made by those skilled in the art based on the spirit of the present invention should be covered by the protection scope of the present invention, which should be subject to the claims.

Claims

1. A single-sided H-shaped spot welding tongs is characterized by comprising a movable electrode assembly, an electrode arm assembly, a fixed bracket assembly, a hard connecting assembly and a transformer assembly; the fixed support assembly is arranged on the robot through a tailstock flange; transformer subassembly, activity electrode subassembly and electrode arm unit mount are in on the fixed bolster subassembly, hard coupling assembling with activity electrode subassembly and electrode arm subassembly are connected, the transformer unit mount is in on the hard coupling assembling.

2. The single-sided H-spot welding tongs according to claim 1 wherein the movable electrode assembly comprises a movable electrode rod, a movable electrode chuck, a first clamping block and a cylinder connecting base; the electrode arm assembly comprises an electrode arm, an electrode arm end face copper strip, an electrode arm connecting block, a nitrogen cylinder connecting seat, a nitrogen cylinder fixing seat and a second clamping block; the fixed support assembly comprises a bottom plate, a side plate, a transformer mounting plate, an air servo module mounting plate, an air cylinder and a sliding block; the hard connecting assembly comprises a first water passing plate, a second water passing plate, a third water passing plate, a fourth water passing plate, a first movable copper strip and a second movable copper strip; the transformer assembly comprises a transformer, an anode fixing block, a cathode fixing block and a total water inlet and outlet block.

3. Single-sided H-spot welding tongs according to claim 2, characterized in that: the fixed support component is provided with a slide rail, a slide block and a cylinder, the cylinder is arranged on the cylinder connecting seat, and the cylinder connecting seat is arranged on the slide block and used for assisting the support and guide of the movable electrode component.

4. A single-sided H-spot welding tongs according to claim 3, characterized in that: the electrode arm subassembly be by electrode arm terminal surface copper strips is installed on the electrode arm, the electrode arm passes through the second presss from both sides tight piece and installs on the electrode arm connecting block, the electrode arm connecting block is installed on the nitrogen cylinder connecting seat, the nitrogen cylinder connecting seat is used for installing and fixing nitrogen cylinder and nitrogen gas jar fixing base, install the safety cover on the nitrogen cylinder fixing base, be used for the protection the nitrogen cylinder reaches slide rail, slider.

5. Single-sided H-spot welding tongs according to claim 2, characterized in that: the movable electrode assembly is characterized in that the movable electrode chuck is arranged on the air cylinder connecting seat, and the movable electrode rod is arranged on the movable electrode chuck through the first clamping block.

6. Single-sided H-spot welding tongs according to claim 2, characterized in that: the nitrogen cylinder connecting seat is installed on the nitrogen cylinder, and the nitrogen cylinder is installed on the nitrogen cylinder fixing seat and used for adjusting the position of the auxiliary electrode arm.

7. Single-sided H-spot welding tongs according to claim 2, characterized in that: the fixed support assembly is respectively arranged on two sides of the bottom plate through the side plates, the transformer mounting plate is arranged on the side plates, the air servo module mounting plate is arranged on the transformer mounting plate, and the air servo module is arranged on the air servo module mounting plate; the base plate is provided with a rib plate, the rib plate is connected with the side plate, the base plate is provided with a cylinder base plate, the cylinder is installed on the base plate through the cylinder base plate, the tailstock flange is installed on the side plate, the base plate is provided with a proximity switch installation block, and a proximity switch is installed on the proximity switch installation block and used for assisting retraction detection of the movable electrode assembly.

8. The single-sided H-spot welder according to claim 7, characterized in that: and the rib plate is provided with a grinding limiting plate for assisting in supporting and positioning grinding of the electrode cap.

9. Single-sided H-spot welding tongs according to claim 2, characterized in that: the positive fixing block and the negative fixing block are respectively installed on a positive electrode and a negative electrode of the transformer, the first water passing plate is installed on the positive fixing block, the first water passing plate is connected with the third water passing plate through the first movable copper strip, the third water passing plate is installed on the electrode arm assembly, the second water passing plate is connected with the negative fixing block through the second movable copper strip, the second water passing plate is installed on the fourth water passing plate, and the fourth water passing plate is installed on the movable electrode assembly.

10. The single-sided H-spot welder according to claim 9, characterized in that: the spot welding pliers are provided with a total water inlet and outlet block, the total water inlet and outlet block is installed on the fixed support component through a base plate, and a plurality of total water inlet and outlet connectors are installed on the total water inlet and outlet block.