CN212552411U - Welding structure for outer covering part of vehicle body - Google Patents
Welding structure for outer covering part of vehicle body Download PDFInfo
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- CN212552411U CN212552411U CN202021044811.9U CN202021044811U CN212552411U CN 212552411 U CN212552411 U CN 212552411U CN 202021044811 U CN202021044811 U CN 202021044811U CN 212552411 U CN212552411 U CN 212552411U
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- copper plate
- welding
- outer cover
- vehicle body
- welded
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Abstract
The utility model discloses an automobile body outer covering piece welded structure, its characterized in that: the welding copper plate is fixed on the copper plate mounting and connecting block through the copper plate connecting bolts, the copper plate connecting bolts are completely screwed on the copper plate mounting and connecting block, the welding copper plate is provided with movable amount in the direction of an outer covering piece of a vehicle body along the axis direction of the copper plate connecting bolts, and the diameter of a bolt hole in the welding copper plate is larger than the diameter of the matching part of the copper plate connecting bolts. The utility model discloses an automobile body outer covering piece welded structure, on automobile body welding production line, there is the momentum at the unidirectional direction after the copper bolt is screwed up completely, and the welding copper can contact with the part face, can effectively reduce the bruising of welding copper and outer covering piece to improve the appearance quality of automobile body.
Description
Technical Field
The utility model relates to an automobile body frame welding process and weld line technical field, in particular to automobile body outer covering piece welded structure.
Background
In an automobile body welding production line of an automobile manufacturing factory, an automobile body is formed by combining and welding various parts on a positioning tool, the automobile body parts comprise a plurality of outer covering parts, the outer covering parts are the outermost parts of a cab after the automobile body is coated, are parts which can be seen by naked eyes to determine the appearance quality of the automobile body, are not suitable for quality problems such as scratches, concave-convex injuries, uneven surface transition and the like, and therefore the defect caused by no tool exists in the appearance of the outer covering parts in the assembling and welding process of the positioning tool. The design state of the product is that welding spots are arranged on part of the outer covering part, welding copper plates are used for welding by contacting the surface of the covering part to avoid welding spot pits, the copper plates must have a certain distance from the outer covering part before welding, part of the copper plates are in point contact with the outer covering part to avoid irregular movement of the welding copper plates, the copper plates can move in a single direction along with the movement of welding tongs during welding, and the problem that the copper plates can uniformly contact the surface of parts needs to be solved currently is solved.
Disclosure of Invention
The utility model discloses the purpose is: the defects in the prior art are overcome, the problems in the prior art are solved, the welding structure of the outer cover of the vehicle body is provided, the contact scars of the copper plate caused by the irregular movement of the copper plate of the outer cover of the vehicle body in the copper plate welding process are reduced, and the appearance quality of the vehicle body is improved.
The technical scheme of the utility model is that:
a vehicle body outer cover welded structure, characterized in that: the welding copper plate is fixed on the copper plate mounting and connecting block through the copper plate connecting bolts, the copper plate connecting bolts are completely screwed on the copper plate mounting and connecting block, the welding copper plate is provided with movable amount in the direction of an outer covering piece of a vehicle body along the axis direction of the copper plate connecting bolts, and the diameter of a bolt hole in the welding copper plate is larger than the diameter of the matching part of the copper plate connecting bolts.
As a further improvement of this solution, the upper face of the welding copper plate is close to the lower face of the vehicle body outer cover and is provided with a gap with the vehicle body outer cover when not spot-welded, the part welded with the outer cover is on the upper face of the vehicle body outer cover and is next to the vehicle body outer cover, the electrode head on the welding tongs is on the upper face of the part welded with the outer cover, and the electrode head under the welding tongs is under the welding copper plate.
As a further improvement of the scheme, a distance exists between the electrode head on the welding tongs and the electrode head under the welding tongs when welding is not carried out, and a conductive loop is not connected; when welding, the electrode head on the welding tongs moves to the electrode head under the welding tongs in a linear mode, parts welded by the welding copper plate, the vehicle body outer cover and the outer cover are pressed between the electrode head on the welding tongs and the electrode head under the welding tongs in the moving process, the parts welded by the welding copper plate, the vehicle body outer cover and the outer cover are in surface contact, the conductive loop is connected to form current, resistance heat is formed between the parts welded by the vehicle body outer cover and the outer cover, and welding spots are formed under the pressure action of the electrode head on the welding tongs and the electrode head under the welding tongs.
As a further improvement of the scheme, the gap distance between the upper surface of the welding copper plate and the outer cover of the vehicle body when not spot-welded is 2mm-4 mm.
As a further improvement of the scheme, when the welding tongs performs spot welding, the welding copper plate moves upwards along with the upper electrode tip and the lower electrode tip of the welding tongs along the axial direction of the copper plate connecting bolt, so that the surface of the welding copper plate is uniformly contacted with the surface of the outer covering part, and the spot welding instantly forms surface contact.
As a further improvement of the scheme, the copper plate installation connecting block is rigidly connected to the positioning tool through bolts, a threaded hole for installing the copper plate connecting bolt is formed in the surface, in contact with the copper plate, of the copper plate installation connecting block, the copper plate is limited between the copper plate installation connecting block and the copper plate connecting bolt when the copper plate connecting bolt is completely screwed on the copper plate installation connecting block, and the welding copper plate can have the movement amount of 2mm-4 mm.
The utility model has the advantages that:
the utility model discloses an automobile body outer covering piece welded structure, on automobile body welding production line, there is the momentum at the unidirectional direction after the copper bolt is screwed up completely, and the welding copper can contact with the part face, can effectively reduce the bruising of welding copper and outer covering piece to improve the appearance quality of automobile body.
Drawings
The invention will be further described with reference to the following drawings and examples:
fig. 1 is a schematic view of a welded structure of a vehicle body outer cover according to the present invention, in which a welded copper plate is not spot-welded in a welding process.
Fig. 2 is a schematic view of the welded structure of the outer cover of the vehicle body according to the present invention in which the copper plate is welded at the time of spot welding.
Fig. 3 is a schematic view of the dimensions of parts in the welded structure of the outer cover of the vehicle body according to the present invention.
Wherein: 11. electrode tip 12 under electrode holder, electrode tip 21 on electrode holder, vehicle body outer cover
22. Outer cover welded part 31, welded copper plate 32, welded copper plate connecting block 33, copper plate connecting bolt.
Detailed Description
The technical solution of the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.
As shown in fig. 1-3, the utility model discloses a car body outer cover welded structure, it includes welding copper 31, copper connecting bolt 33, welding copper connecting block 32, welding copper 31 is fixed on copper erection joint piece by copper connecting bolt 33, after copper connecting bolt 33 was screwed up completely on the copper erection joint piece, welding copper 31 was provided with the mobility at copper connecting bolt 33 along the axis direction to car body outer cover 21 direction, the bolt hole diameter on welding copper 31 was greater than the diameter at copper connecting bolt 33 cooperation position. The utility model discloses an automobile body outer covering piece welded structure, on automobile body welding production line, there is the momentum at the unidirectional direction after the copper bolt is screwed up completely, and welding copper 31 can contact with the part face, can effectively reduce the bruising of welding copper 31 and outer covering piece to improve the appearance quality of automobile body.
As a further improvement of this solution, the upper face of the welding copper plate 31 is close to the lower face of the vehicle body outer cover 21 with a gap from the vehicle body outer cover 21 when not spot-welded, the part 22 welded to the outer cover is above the vehicle body outer cover 21 and in close proximity to the vehicle body outer cover 21, the electrode head 12 on the electrode holder is above the part 22 welded to the outer cover, and the electrode head 11 under the welding copper plate 31. When the electrode head 12 on the electrode holder and the electrode head 11 under the electrode holder are not welded, a distance exists between the electrode head and the electrode head, and a conductive loop is not connected; during welding, the electrode head 12 on the electrode holder moves linearly towards the electrode head 11 under the electrode holder, the electrode head 12 on the electrode holder presses the welding copper plate 31, the vehicle body outer cover 21 and the part 22 welded by the outer cover between the electrode head 12 on the electrode holder and the electrode head 11 under the electrode holder in the moving process, the welding copper plate 31, the vehicle body outer cover 21 and the part 22 welded by the outer cover are in surface contact, a conductive loop is connected to form current, resistance heat is formed between the vehicle body outer cover 21 and the part 22 welded by the outer cover, and a welding spot is formed under the pressure action of the electrode head 12 on the electrode holder and the electrode head 11 under the electrode holder. As shown in fig. 1, the outer covering member is placed on the tooling for positioning, the welding tongs (the electrode head 12 on the welding tongs and the electrode head 11 under the welding tongs are installed on the welding tongs) are not welded by spot, the copper plate and the outer covering member are not contacted at the moment, and the welding copper plate 31 and the outer covering member have a certain distance; by using the structure of the welding copper plate 31 having the movement amount in a single direction after being completely tightened, the welding copper plate 31 has a certain distance from the outer cover in the process of assembling the vehicle body outer cover 21 to the tooling, and the collision caused by the contact between the outer cover and the welding copper plate 31 can be avoided. As shown in fig. 2, the outer covering member is positioned on the tool, and at the moment of spot welding by the welding tongs, the welding copper plate 31 moves upward along the axis direction of the connecting bolt along with the welding tongs, and the surface of the copper plate is uniformly contacted with the outer covering member to form a welding spot by welding. In the process of welding the welding spot, the welding copper plate 31 moves along with the welding tongs in a single axial direction of the copper plate connecting bolt 33, so that the surface of the welding copper plate 31 is uniformly contacted with the surface of the outer covering part, and the spot welding instantly forms surface contact to avoid the collision of point contact.
As a further improvement of this solution, the gap distance between the upper face of the welding copper plate 31 and the vehicle body outer cover 21 when not spot-welded is 2mm to 4 mm. The distance of 2mm-4mm can effectively avoid the collision between the outer covering piece 21 of the car body and the copper plate when being placed, meanwhile, the distance is small, the upper and lower electrode tips are welded to move to drive the copper plate to move when welding is carried out, and the angle change problem in the copper plate moving process can be reduced to the maximum extent by 2mm-4 mm.
As a further improvement of the scheme, when the welding tongs carry out spot welding, the welding copper plate 31 moves upwards along with the upper electrode tip 12 and the lower electrode tip 11 of the welding tongs in the axial direction of the copper plate connecting bolt 33, so that the surface of the welding copper plate 31 is uniformly contacted with the surface of the outer covering piece, and the spot welding instantly forms surface contact, thereby avoiding the collision of point contact.
As a further improvement of the scheme, the copper plate mounting connecting block is rigidly connected to the positioning tool through bolts, the surface of the copper plate mounting connecting block, which is in contact with the copper plate, is provided with threaded holes for mounting copper plate connecting bolts 33, when the copper plate connecting bolts 33 are completely screwed on the copper plate mounting connecting block, the copper plate is limited between the copper plate mounting connecting block and the copper plate connecting bolts 33, and the welding copper plate 31 can have the movement amount of 2mm-4 mm. The structure is simple, the installation and the use are convenient, in the welding spot welding process, the welding copper plate 31 moves along with a welding tongs in a single axial direction of the copper plate connecting bolt 33, so that the surface of the welding copper plate 31 is uniformly contacted with the surface of the outer covering part, the spot welding instantly forms surface contact, and the collision of point contact is avoided.
In fig. 3, the dimensions of parts in the vehicle body outer cover welded structure: a is the diameter of the bolt outer diameter of the connecting bolt/the bolt hole of the copper plate connecting support, b is the diameter of the compression end of the connecting bolt, c is the diameter of the bolt through hole in the welding copper plate 31, d is the outer diameter of the end head of the connecting bolt, e is the depth of the bolt through hole in the welding copper plate 31, and f is the height of the compression end of the connecting bolt. As in fig. 3: diameter b is greater than outer diameter a, outer diameter c is greater than diameter b, outer diameter d is greater than outer diameter c, and height f is greater than depth e. b is greater than a: the connecting bolts can be fully tightened. c is larger than b: the welding copper plate 31 is not locked to have a moving amount. d is greater than c: the welded copper plate 31 does not come off the connecting bolt. f is greater than e: the copper welding plate 31 can be moved in the axial direction of the connecting bolt by an amount equal to f-e.
The utility model discloses automobile body outer covering piece welded structure's theory of operation is: the welding copper plate 31 is fixed on the copper plate mounting connecting plate by the copper plate connecting bolt 33, after the copper plate connecting bolt 33 is completely screwed on the copper plate mounting connecting plate, the welding copper plate 31 has the movement amount of 2mm-4mm in the axis direction of the connecting bolt, and the diameter of the bolt hole on the welding copper plate 31 is slightly larger than the diameter of the matching part of the copper plate connecting bolt 33. When the welding tongs carry out spot welding, the welding copper plate 31 moves along with the welding tongs in a single axial direction of the copper plate connecting bolt 33, so that the surface of the welding copper plate 31 is uniformly contacted with the surface of the outer covering part, surface contact is formed at the moment of spot welding, and the collision of point contact is avoided.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention. The utility model has a plurality of implementation modes, and all technical schemes formed by adopting equivalent transformation or equivalent transformation all fall within the protection scope of the utility model.
Claims (6)
1. A vehicle body outer cover welded structure, characterized in that: the welding copper plate is fixed on the copper plate mounting and connecting block through the copper plate connecting bolts, the copper plate connecting bolts are completely screwed on the copper plate mounting and connecting block, the welding copper plate is provided with movable amount in the direction of an outer covering piece of a vehicle body along the axis direction of the copper plate connecting bolts, and the diameter of a bolt hole in the welding copper plate is larger than the diameter of the matching part of the copper plate connecting bolts.
2. The vehicle body outer cover welded structure according to claim 1, characterized in that: the upper surface of the welding copper plate is close to the lower surface of the outer cover of the vehicle body and is provided with a gap with the outer cover of the vehicle body when not in spot welding, the part welded with the outer cover is arranged on the upper surface of the outer cover of the vehicle body and is close to the outer cover of the vehicle body, the electrode head on the welding tongs is arranged on the upper edge of the part welded with the outer cover, and the electrode head under the welding copper plate is arranged under the welding copper plate.
3. The vehicle body outer cover welded structure according to claim 1, characterized in that: when the electrode head on the electrode holder and the electrode head under the electrode holder are not welded, a distance exists between the electrode head and the electrode head, and a conductive loop is not connected; when welding, the electrode head on the welding tongs moves to the electrode head under the welding tongs in a linear mode, parts welded by the welding copper plate, the vehicle body outer cover and the outer cover are pressed between the electrode head on the welding tongs and the electrode head under the welding tongs in the moving process, the parts welded by the welding copper plate, the vehicle body outer cover and the outer cover are in surface contact, the conductive loop is connected to form current, resistance heat is formed between the parts welded by the vehicle body outer cover and the outer cover, and welding spots are formed under the pressure action of the electrode head on the welding tongs and the electrode head under the welding tongs.
4. The vehicle body outer cover welded structure according to claim 2, characterized in that: the gap distance between the upper surface of the welded copper plate and the outer cover of the vehicle body when not spot-welded is 2mm to 4 mm.
5. The vehicle body outer cover welded structure according to claim 1, characterized in that: when the welding tongs carry out spot welding, the welding copper plate carries out the axial upward movement of copper connection bolt along with electrode head on the welding tongs and electrode head under the welding tongs, makes the even contact with outer covering surface on welding copper plate surface, and spot welding forms face contact in the twinkling of an eye.
6. The vehicle body outer cover welded structure according to claim 1, characterized in that: when the copper plate mounting connecting block is rigidly connected to the positioning tool through the bolt, the surface of the copper plate mounting connecting block, which is in contact with the copper plate, is provided with a threaded hole for mounting the copper plate connecting bolt, and the copper plate connecting bolt is completely screwed on the copper plate mounting connecting block, the copper plate is limited between the copper plate mounting connecting block and the copper plate connecting bolt, and the welded copper plate can have the movement amount of 2-4 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021044811.9U CN212552411U (en) | 2020-06-09 | 2020-06-09 | Welding structure for outer covering part of vehicle body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021044811.9U CN212552411U (en) | 2020-06-09 | 2020-06-09 | Welding structure for outer covering part of vehicle body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212552411U true CN212552411U (en) | 2021-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021044811.9U Active CN212552411U (en) | 2020-06-09 | 2020-06-09 | Welding structure for outer covering part of vehicle body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212552411U (en) |
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2020
- 2020-06-09 CN CN202021044811.9U patent/CN212552411U/en active Active
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