Stud welding test bed

Abstract

The utility model relates to the technical field of stud welding, in particular to a stud welding test bed, which comprises a working table, a pressing block fixed on the working table and used for limiting movement of a test piece, and a movable clamp fixed on the working table and used for limiting deformation of the end part of the test piece, and the working table is a conductive metal table and is grounded. The utility model overcomes the defect that the existing stud welding equipment does not have a special testboard for carrying out welding durability test after being repaired and being separated from a production line. The device is independent of a production line and can be placed on one side of the repaired stud welding equipment to carry out a stud welding stud experiment, and the stud welding equipment is put into the production line to be used after the welding durability test of the stud welding equipment is completed, so that the production activation and secondary faults are reduced, and the production efficiency and the production quality of the production line are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stud welding, and more specifically to a stud welding test bench. Background Art

[0002] The welding automatic line integrates a variety of production processes, including hemming, spot welding, stud welding, arc welding and assembly processes. In the stud welding process, stud jamming and arc grabbing faults frequently occur when welding the white car body. For example, if the welding current is too large, excessive heat will be generated during the welding process, causing the material in the stud to deform and form a stud jam. Or improper welding position selection will lead to uneven distribution of welding heat, causing the material in the stud to deform and form a stud jam. Stud jamming, arc grabbing and other faults cause the stud welding machine to frequently have abnormal D-NET communication and DSP communication, which can easily cause the automatic line to shut down, and the studs on the white car body will have poor quality phenomena such as small weld cores and cold welds.

[0003] After the stud welding machine fault is repaired, the stud welding equipment needs to be tested for durability and operated to confirm the repair effect. Since only the white car body can be used for stud welding in the current state, if the equipment status is directly allowed to be confirmed online without durability testing, it is very easy to cause secondary failures, thereby affecting production efficiency, increasing production costs, and failing to ensure the stability of the quality of stud welding. Therefore, after the stud welding equipment is repaired, targeted welding tests need to be carried out to ensure that the use of the equipment after repair does not affect production. However, there is currently no dedicated test bench for welding durability testing of stud welding equipment that is separated from the production line, which has become a problem that needs to be solved urgently. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the existing stud welding equipment after repair, which is that the special test bench is not separated from the production line for welding durability test, and to provide a stud welding test bench. The utility model is independent of the production line and can be placed on one side of the repaired stud welding equipment to conduct stud welding nail experiments. After the stud welding equipment is completed for welding durability test, the stud welding equipment can be put into production line for use, reducing production operation and secondary failures, and improving production line production efficiency and production quality.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A stud welding test bench comprises a workbench, a clamping block fixed on the workbench and used for limiting the movement of a test piece, and a movable clamp fixed on the workbench and used for limiting the deformation of the end of the test piece. The workbench is a conductive metal table and is grounded.

[0007] It should be noted that the utility model can be installed in the welding operation range of the stud welding equipment after the fault is repaired, and the test piece for welding is placed on the workbench, the movement of the test piece is limited by the clamping block, and the deformation of the end of the test piece is limited by the movable clamp. The welding parameters used by each vehicle model are edited in the program, and the stud welding equipment performs stud welding on the test piece according to the welding program edited by the device and continuously and stably welds a certain number of times to detect the performance durability of the stud welding equipment after repair. The operator observes the quality of stud welding and determines whether the stud welding equipment has passed the durability test and whether it can be used for production line production. When the utility model is installed, since the workbench is a conductive metal table and is grounded, the current flows into the earth through the grounding wire during welding, and the current will form a closed circuit in the earth, thereby avoiding the current from causing harm to the welding equipment and welders. At the same time, the grounding wire can make the welding head fit tightly to the workpiece, reducing the air gap between the joint and the workpiece, improving the conductivity, avoiding the influence of the oxide layer on welding, and ensuring the quality of the weld. By using the stud welding test bench of the utility model, the stability of the stud welding equipment after repair can be effectively confirmed. The hidden dangers of the stud welding equipment can be exposed during the durability test on the stud welding test bench, so that repairs can be made in advance to avoid secondary failures in the production welding process, thereby ensuring the stability of production operations, improving the accuracy of equipment repair by production line maintenance personnel, reducing the risk of hidden dangers of secondary equipment failures, helping to improve production efficiency, and protecting the quality of the vehicle body.

[0008] Furthermore, the clamping block includes a plurality of clamping plates arranged on both sides of the workbench, the side limit of the test piece is located between the clamping plate and the workbench, the clamping plate and the workbench are detachably connected by bolts, and the test piece located between the clamping plate and the workbench can be tightened or loosened by adjusting the bolts. The test piece is placed under the clamping plate, and the sides of the test piece are attached to the clamping plate. After the clamping plate is fixed by bolts, the test piece can be clamped on the workbench, and the test piece will not move during the welding process.

[0009] Furthermore, the plurality of pressing plates are symmetrically distributed along the edge of the workbench. The symmetrical distribution can provide an equivalent and uniform pressing force to the test piece, so that the test piece is not easily deformed and moved under the high temperature of welding.

[0010] Furthermore, the pressing plate is a rubber pad.

[0011] Further, the outer layer of the bolt is coated with an insulating layer.

[0012] It should be noted that the clamping plate that is abutted and pressed is a rubber pad rather than a metal plate, and the outer layer of the bolt is coated with an insulating layer. This is to eliminate the possibility that the stud welding equipment accidentally welds to the clamping plate during welding. There will be no welding adhesion between the clamping plate and the test piece, thus not affecting the disassembly of the test piece.

[0013] Furthermore, the movable clamp includes a mounting base fixed on the workbench, a rotating handle rotatably connected to the mounting base at one end, and a connecting rod rotatably connected to the mounting base and the rotating handle respectively, and an abutting column for abutting the end of the test piece is fixed on the connecting rod.

[0014] After the test piece is fixed by the clamping block, the side of the symmetrical side of the test piece is restricted. At this time, the end of the test piece is not fixed. A movable clamp is provided. By turning the handle, the connecting rod drives the abutment column to abut the end of the test piece. During the welding process, high temperature may cause the end of the test piece that is not fixed by the clamping block to warp and other deformations. After the movable clamp clamps the test piece between the abutment column and the workbench, it can not only prevent the end of the test piece from warping but also play a certain fixing role.

[0015] Furthermore, an insulating contact block is also provided at one end of the abutting post for abutting the test piece.

[0016] Furthermore, the insulating contact block is a rubber block. The insulating contact block can eliminate the possibility that the stud welding device mistakenly welds to the abutment column during welding, and welding adhesion will not occur between the abutment column and the test piece, thereby not affecting the removal of the test piece.

[0017] Furthermore, there are at least two movable clamps, which are fixed at the middle and / or end of the workbench. Since the lengths of the test pieces vary, the movable clamps are distributed at the middle and / or end of the workbench to accommodate test pieces of different lengths.

[0018] Furthermore, the workbench includes a crossbeam and two supporting columns with one end respectively connected to two ends of the crossbeam.

[0019] Furthermore, the support column is a hollow column, and the end of the support column is a cylinder pin sleeve.

[0020] The workbench is in the form of a gantry, which can be easily and quickly set up in the operating space of the stud welding equipment. The end of the support column is set as a cylinder pin sleeve, which can match the existing fixed base on the production line and achieve grounding, simplifying the installation procedure. At the same time, the support column is a hollow column, which reduces the overall weight of the test bench and is convenient for staff to carry, move and install in other places.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] The utility model can be installed in the welding operation range of the stud welding equipment after the fault is repaired, and the test piece used for welding is placed on the workbench, the test piece is restricted from moving by the clamping block, and the end of the test piece is restricted from deformation by the movable clamp. The welding parameters used by each vehicle model are edited in the program, and the stud welding equipment performs stud welding on the test piece according to the welding program edited by the device and continuously and stably welds a certain number of studs to detect the performance durability of the stud welding equipment after repair, and judge whether the stud welding equipment has passed the durability test and whether it can be used for production line production. By using the stud welding test bench of the utility model, the stability of the stud welding equipment after repair can be effectively confirmed, and secondary failures in the production welding process can be avoided, thereby ensuring the stability of production operation, helping to improve production efficiency, and safeguarding the quality of the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0024] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0025] Figure 3 It is a structural schematic diagram of the movable clamp in the utility model;

[0026] Figure 4 It is a structural schematic diagram of another perspective of the utility model;

[0027] The illustrations are as follows:

[0028] 1-working table, 11-crossbeam, 12-supporting column, 2-pressing block, 21-pressing plate, 22-bolt, 3-movable clamp, 31-mounting seat, 32-rotating handle, 33-connecting rod, 34-abutting column, 35-insulating contact block. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with specific implementation methods. The drawings are only used for exemplary descriptions, and are only schematic diagrams, not actual pictures, and cannot be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0030] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] Example 1

[0032] like Figure 1 As shown, a stud welding test bench includes a workbench 1, a clamping block 2 fixed on the workbench 1 and used to limit the movement of a test piece, and a movable clamp 3 fixed on the workbench 1 and used to limit the deformation of the end of the test piece. The workbench 1 is a conductive metal table and is grounded.

[0033] The method of using this embodiment is as follows: the device of this embodiment can be installed in the welding operation range of the stud welding equipment after the fault is repaired, the test piece for welding is placed on the workbench 1, the test piece is limited to move by the clamping block 2, and the deformation of the end of the test piece is limited by the movable clamp 3. The welding parameters used by each vehicle model are edited in the program. The stud welding equipment performs stud welding on the test piece according to the welding program edited by the device and continuously and stably welds a certain number of times to detect the performance durability of the stud welding equipment after repair. The operator observes the quality of the stud welding and determines whether the stud welding equipment has passed the durability test and whether it can be used for production line production. When installing this embodiment, since the workbench 1 is a conductive metal table and is grounded, the current flows into the earth through the grounding wire during welding, and the current will form a closed circuit in the earth, thereby avoiding the current from causing harm to the welding equipment and the welder. At the same time, the welding head can be closely fitted to the workpiece through the grounding wire, reducing the air gap between the joint and the workpiece, improving the conductivity, avoiding the influence of the oxide layer on the welding, and ensuring the quality of the weld.

[0034] like Figure 2 As shown, the clamping block 2 includes a plurality of clamping plates 21 disposed on both sides of the workbench 1, and the side limit of the test piece is located between the clamping plates 21 and the workbench 1. The clamping plates 21 and the workbench 1 are detachably connected by bolts 22, and the test piece located between the clamping plates 21 and the workbench 1 can be tightened or loosened by adjusting the bolts 22. The test piece is placed under the clamping plates 21, and the sides of the test piece are attached to the clamping plates 21. After the clamping plates 21 are fixed by bolts 22, the test piece can be clamped on the workbench 1, and the test piece will not move during the welding process.

[0035] like Figure 1 and Figure 2 As shown, a plurality of pressing plates 21 are symmetrically distributed along the edge of the workbench 1. The symmetrical distribution can provide an equivalent and uniform pressing force to the test piece, so that the test piece is not easily deformed and moved under the high temperature of welding.

[0036] In this embodiment, the pressing plate 21 is a rubber pad.

[0037] In this embodiment, the outer layer of the bolt 22 is coated with an insulating layer.

[0038] It should be noted that the clamping plate 21 that is abutted and pressed is a rubber pad rather than a metal plate, and the outer layer of the bolt 22 is coated with an insulating layer. This is to eliminate the possibility that the stud welding equipment accidentally welds to the clamping plate 21 during the welding process. No welding adhesion will occur between the clamping plate 21 and the test piece, thereby not affecting the disassembly of the test piece.

[0039] like Figure 3 As shown, the movable clamp 3 includes a mounting base 31 fixed on the workbench 1, a rotating handle 32 rotatably connected to the mounting base 31 at one end, and a connecting rod 33 rotatably connected to the mounting base 31 and the rotating handle 32 respectively, and an abutting column 34 for abutting the end of the test piece is fixed on the connecting rod 33.

[0040] After the test piece is fixed by the clamping block 2, the side of the symmetrical side of the test piece is restricted. At this time, the end of the test piece is not fixed yet, and a movable clamp 3 is provided. By rotating the handle 32, the connecting rod 33 drives the abutment column 34 to abut the end of the test piece. During the welding process, high temperature may cause the end of the test piece that is not fixed by the clamping block 2 to warp or other deformations. After the movable clamp 3 clamps the test piece between the abutment column 34 and the workbench 1, it can not only prevent the end of the test piece from warping but also play a certain fixing role.

[0041] In this embodiment, there are two movable clamps 3 , and the two movable clamps 3 are respectively fixed at the middle of the workbench 1 and in opposite directions.

[0042] The advantage of this embodiment is that by using the stud welding test bench of the utility model, the stability of the stud welding equipment after repair can be effectively confirmed, and the hidden dangers of the stud welding equipment can be exposed during the durability test on the stud welding test bench, so that repairs can be carried out in advance to avoid secondary failures in the production welding process, thereby ensuring the stability of production operations, improving the accuracy of equipment repair by production line maintenance personnel, reducing the risk of hidden dangers of secondary equipment failures, helping to improve production efficiency, and protecting the quality of the vehicle body.

[0043] Example 2

[0044] This embodiment is similar to Embodiment 1, except that:

[0045] In this embodiment, an insulating contact block 35 is further provided at one end of the abutting post 34 for abutting against the test piece.

[0046] In this embodiment, the insulating contact block 35 is a rubber block. The insulating contact block 35 can prevent the stud welding equipment from mistakenly welding to the abutment column 34 during welding, and prevent welding adhesion between the abutment column 34 and the test piece, thereby not affecting the removal of the test piece.

[0047] The advantage of this embodiment is that by using the stud welding test bench of the utility model, the stability of the stud welding equipment after repair can be effectively confirmed, and the hidden dangers of the stud welding equipment can be exposed during the durability test on the stud welding test bench, so that repairs can be carried out in advance to avoid secondary failures in the production welding process, thereby ensuring the stability of production operations, improving the accuracy of equipment repair by production line maintenance personnel, reducing the risk of hidden dangers of secondary equipment failures, helping to improve production efficiency, and protecting the quality of the vehicle body.

[0048] The other structures and principles of this embodiment are the same as those of Embodiment 1.

[0049] Example 3

[0050] This embodiment is similar to Embodiment 2, except that in this embodiment:

[0051] like Figure 4 As shown, the workbench 1 includes a crossbeam 11 and two support columns 12 with one end respectively connected to two ends of the crossbeam 11 .

[0052] like Figure 4 As shown, the support column 12 is a hollow column, and the end of the support column 12 is a cylinder pin sleeve.

[0053] The workbench 1 is in the form of a gantry as a whole, and can be easily and quickly set up in the operating space of the stud welding equipment. The end of the support column 12 is set as a cylinder pin sleeve that can match the existing fixed base on the production line and achieve grounding, simplifying the installation procedure. At the same time, the support column 12 is a hollow column to reduce the overall weight of the test bench, making it easier for staff to carry, move and install it in a different location.

[0054] The advantage of this embodiment is that by using the stud welding test bench of the utility model, the stability of the stud welding equipment after repair can be effectively confirmed, and the hidden dangers of the stud welding equipment can be exposed during the durability test on the stud welding test bench, so that repairs can be carried out in advance to avoid secondary failures in the production welding process, thereby ensuring the stability of production operations, improving the accuracy of equipment repair by production line maintenance personnel, reducing the risk of hidden dangers of secondary equipment failures, helping to improve production efficiency, and protecting the quality of the vehicle body.

[0055] The other structures and principles of this embodiment are the same as those of Embodiment 2.

[0056] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A stud welding test bench, characterized in that: The invention comprises a workbench (1), a pressing block (2) fixed on the workbench (1) and used to limit the movement of a test piece, and a movable clamp (3) fixed on the workbench (1) and used to limit the deformation of the end of the test piece. The workbench (1) is a conductive metal table and is grounded.

2. A stud welding test bench according to claim 1, characterized in that: The clamping block (2) comprises a plurality of clamping plates (21) arranged along the edges of both sides of the workbench (1); the side limits of the test piece are located between the clamping plates (21) and the workbench (1); the clamping plates (21) and the workbench (1) are detachably connected via bolts (22); and the test piece located between the clamping plates (21) and the workbench (1) can be tightened or loosened by adjusting the bolts (22).

3. A stud welding test bench according to claim 2, characterized in that: A plurality of the pressing plates (21) are symmetrically distributed along the edge of the workbench (1).

4. A stud welding test bench according to claim 2, characterized in that: The pressing plate (21) is a rubber pad.

5. A stud welding test bench according to claim 2, characterized in that: The outer layer of the bolt (22) is coated with an insulating layer.

6. A stud welding test bench according to claim 1, characterized in that: The movable clamp (3) comprises a mounting seat (31) fixed on the workbench (1), a rotating handle (32) rotatably connected to the mounting seat (31) at one end, and a connecting rod (33) rotatably connected to the mounting seat (31) and the rotating handle (32), respectively, and an abutting column (34) for abutting the end of the test piece is fixed on the connecting rod (33).

7. A stud welding test bench according to claim 6, characterized in that: One end of the abutting column (34) used for abutting the test piece is also provided with an insulating contact block (35), and the insulating contact block (35) is a rubber block.

8. A stud welding test bench according to claim 6, characterized in that: The number of the movable clamps (3) is at least two, and the movable clamps (3) are fixed to the middle and / or end of the workbench (1).

9. A stud welding test bench according to claim 1, characterized in that: The workbench (1) comprises a crossbeam (11) and two support columns (12) one end of which is respectively connected to two ends of the crossbeam (11).

10. A stud welding test bench according to claim 9, characterized in that: The support column (12) is a hollow column, and the end of the support column (12) is a cylinder pin sleeve.

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