CN210788680U - Automobile metal plate repairing device - Google Patents

Abstract

The utility model belongs to the panel beating field of restoreing, concretely relates to car panel beating prosthetic devices, include the spot welding rifle, draw the ware and draw the piece, the spot welding rifle include the rifle body and with rifle body fixed connection's rifle head, its characterized in that: the gun head comprises a positive mandrel and a negative mandrel, an insulating mandrel is fixed between the positive mandrel and the negative mandrel, a spring is arranged between the positive mandrel and the insulating mandrel, and the positive mandrel can contract and rebound towards the inside of the gun body; the front end of the positive mandrel is provided with a threaded hole, and the drawing piece can be fixedly connected with the front end of the positive mandrel. The utility model can make the welding part form a loop, no extra negative pole is needed, and the operation is simple; meanwhile, different drawing pieces can be matched for different pits, different repairing requirements are met, and the repairing effect is improved.

Description

Automobile metal plate repairing device

Technical Field

The utility model belongs to car panel beating field of restoreing, concretely relates to car panel beating prosthetic devices.

Background

After the automobile metal plate is damaged, various problems are often encountered in the maintenance process, for example, only a small but deep area on the surface of some metal plates is sunken, and a strip-shaped pit appears on the surface of some metal plates. In present panel beating repair industry, hardly carry out perfect restoration processing to little and dark pit, beat the hammering to carry out the plastic of small deep pit usually for the manual work among the prior art and restore, but this kind of mode is wasted time and energy, still hardly guarantee the repair effect, perhaps adopt to weld the spot welder who draws the integral type to draw the repair processing, but weld the spot welder who draws the integral type or need great holding surface just can effectively draw, or utilize the spot welder to weld earlier and draw afterwards to easily cause the damage to spot welder, seriously influence the life-span of spot welder. In addition, when the existing spot welding gun is used for welding a drawn part, a negative electrode is required to be additionally arranged to be connected with the surface of a metal plate, so that normal welding can be realized, and the operation is complicated; on the other hand, current spot welding gun function singleness can only weld single piece of drawing, for example the welding nail, can't match the welding to draw to the pit defect of difference, seriously influences the repair effect of panel beating.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: the defects of the prior art are overcome, and the automobile metal plate repairing device is provided, so that a welding part can form a loop, a redundant negative electrode is not needed, and the operation is simple and convenient; meanwhile, different drawing pieces can be matched for different pits, different repairing requirements are met, and the repairing effect is improved.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides an automobile panel beating prosthetic devices, includes the spot welding rifle, draws the ware and draws the piece, the spot welding rifle include the rifle body and with rifle body fixed connection's rifle head, its characterized in that: the gun head comprises a positive mandrel and a negative mandrel, an insulating mandrel is fixed between the positive mandrel and the negative mandrel, a spring is arranged between the positive mandrel and the insulating mandrel, and the positive mandrel can contract and rebound towards the inside of the gun body; the front end of the positive mandrel is provided with a threaded hole, and the drawing piece can be fixedly connected with the front end of the positive mandrel.

Furthermore, the drawing piece comprises a welding nail and a welding nail fixer, the tail end of the welding nail fixer is of a bolt structure corresponding to a threaded hole at the end part of the anode core shaft, and the center of the welding nail fixer is provided with a through hole which can just accommodate the welding nail to pass through; the distance from the front end of the welding nail to the gun body is larger than the distance from the front end of the negative mandrel to the gun body.

Furthermore, the device also comprises a negative electrode extension piece which can be fixed on a negative electrode mandrel of the gun head.

Furthermore, the negative electrode extension piece is tubular, and two open grooves are symmetrically formed in the side wall of the front end of the negative electrode extension piece.

Furthermore, the drawing piece comprises a round meson and a round meson fixer, the tail end of the round meson fixer is of a bolt structure corresponding to a threaded hole at the end part of the positive core shaft, the front end of the round meson fixer is provided with an open slot, the width of the open slot is greater than the thickness of the round meson, and the depth of the open slot is greater than the radius of the round meson and less than the diameter of the round meson; the distance from the front end of the round meson to the gun body is larger than the distance from the front end of the negative electrode extension piece to the gun body.

Furthermore, the drawing piece comprises a corrugated line and a corrugated line fixer, the tail end of the corrugated line fixer is of a bolt structure corresponding to a threaded hole at the end part of the anode core shaft, the front end of the corrugated line fixer is of an inclined plane structure, the top end of the inclined plane is provided with an arc-shaped groove, the diameter of the groove is matched with that of the corrugated line, and the depth of the groove is smaller than that of the corrugated line; the distance from the front end of the corrugated line to the gun body is greater than the distance from the front end of the negative electrode extension piece to the gun body.

Further, the puller comprises a pull rod, a pull hammer and a pull head, and is characterized in that: the outer part of the pull rod is provided with an external thread, and the inner part of the front end of the pull rod is provided with a positioning groove; the drawing head comprises a fixing piece and a clamping piece, the front end of the fixing piece is of a cone structure with a three-piece opening, a welding nail can be inserted into the three-piece opening structure, the rear end of the fixing piece is provided with a positioning block, and the positioning block is matched with a positioning groove in the front end of the pull rod; the clamping piece is internally provided with a through hole, the front end of the through hole is a conical surface with the same conical inclination as the conical inclination of the front end of the fixing piece, and the rear end of the through hole is of an internal thread structure matched with the external thread of the pull rod.

Furthermore, the outer wall of the clamping piece is polygonal, and an inner polygonal through hole matched with the polygon of the clamping piece is formed in the drawing hammer.

Furthermore, the outer wall of the clamping piece and the inner wall of the pulling hammer are both of a hexagonal structure.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses improved the structure of rifle head on the basis of current panel beating spot welding rifle, make anodal dabber can contract and kick-back to the internal portion of rifle, the screw hole is seted up to anodal dabber front end, this screw hole can match the different piece of drawing, the structure that utilizes anodal dabber ability backward to contract makes and draws a positive pole and negative pole dabber and communicate on the panel beating surface, need not to be equipped with unnecessary negative pole, just can realize the positive negative pole return circuit of automatic of welding position, accomplish the welding, it is very simple and convenient to operate, and manufacturing cost has been reduced greatly.

2. The utility model discloses in give three kinds of drawing parts such as welding pin, circle meson, corrugated wire and carried out the restoration of panel beating pit, so alright with the difference draw the part and weld the panel beating surface, recycle and draw the different drawing tools that the part corresponds and draw the restoration, more corresponding restores the pit, guarantees good repairing effect.

3. The utility model discloses well puller utilizes the mounting of drawing head to fix the welding-wire nail, utilizes the clamping piece rotatory screw thread to retreat afterwards on the pull rod and realizes pressing from both sides the clamp of mounting front end to the realization is tight to the clamp of welding-wire nail, and such clamp force satisfies drawing of drawing the in-process to the panel beating pit completely, easy operation, and the feasibility is high.

Drawings

FIG. 1 is an exploded view of the first embodiment;

FIG. 2 is a schematic structural diagram of a torch head in welding according to the first embodiment;

fig. 3 is a schematic view of a negative extension;

FIG. 4 is a view from the direction A of FIG. 3;

FIG. 5 is a schematic view of the structure of the spacer;

FIG. 6 is a view from the direction B of FIG. 5;

FIG. 7 is a schematic view of a gun head structure according to a second embodiment;

FIG. 8 is a schematic view of a corrugated wire anchor;

FIG. 9 is a view taken along line C of FIG. 8;

FIG. 10 is a schematic view of a gun head structure according to a third embodiment;

FIG. 11 is a schematic drawing of the puller configuration;

FIG. 12 is a schematic view of the fastener construction;

FIG. 13 is a schematic view of FIG. 12 in the direction D;

FIG. 14 is a schematic view of the structure of the clamping member;

FIG. 15 is a schematic view of FIG. 14 in the direction E;

fig. 16 is a schematic view of the drawing head structure in operation of the drawing device.

Labeled as:

1. a gun body; 2. a positive mandrel; 3. a negative mandrel; 4. an insulating mandrel; 5. a spring; 6. welding nails; 7. a weld nail holder; 8. a pull rod; 9. pulling a hammer; 10. drawing the head; 11. a fixing member; 12. a clamping member; 13. a through hole; 14. a negative electrode extension member; 15. a round meson; 16. a round meson holder; 17. an open slot; 18. a corrugated line; 19. a corrugated wire holder; 20. a groove; 21. a gun head; 22. an open slot.

Detailed Description

The invention is further described with reference to the following embodiments:

the utility model discloses the one end that well appointed is close to treat the restoration panel beating is the front end, and the one end of keeping away from to treat the restoration panel beating is the rear end.

Example one

The utility model provides a car panel beating prosthetic devices, include the spot welding rifle, draw the piece and draw the ware, the spot welding rifle include the rifle body 1 and with 1 fixed connection's of the rifle body rifle head 21, as shown in fig. 1, 2, rifle head 21 includes anodal dabber 2 and negative pole dabber 3, is fixed with insulating dabber 4 between anodal dabber 2 and the negative pole dabber 3, is provided with spring 5 between anodal dabber 2 and the insulating dabber 4, and anodal dabber 2 can be to 1 inside shrink of the rifle body and kick-back. The front end of the insulating mandrel 4 is shorter than the front end of the negative mandrel 3, the negative mandrel 3 can be in good contact with the surface of a metal plate, the front end of the positive mandrel 2 is provided with a threaded hole, and the drawing part is fixedly connected with the front end of the positive mandrel 2 through the threaded hole.

The drawing piece in the embodiment comprises a welding nail 6 and a welding nail fixer 7, the tail end of the welding nail fixer 7 is of a bolt structure corresponding to a threaded hole in the end part of the anode mandrel 2, and the tail end of the welding nail fixer 7 is fixed on the anode mandrel 2 through a threaded structure. The center of the welding nail fixer 7 is provided with a through hole which just can accommodate the welding nail 6 to pass through. In order to ensure the electrifying effect and the welding quality of the spot welding gun, the anode mandrel 2, the cathode mandrel 3, the welding nail fixer 7 and the welding nail 6 are made of copper.

The distance from the front end of the welding nail 6 to the gun body 1 is larger than the distance from the front end of the negative mandrel 3 to the gun body 1, so that the welding nail 6 can be retracted backwards along with the positive mandrel 2 during welding, and can be simultaneously contacted with the front end surface of the negative mandrel 3 on the surface of a metal plate to form a positive and negative loop, and good welding is guaranteed.

The working principle and the specific implementation of the embodiment are as follows:

when the defect of a small pit appears on the surface of an automobile sheet metal, firstly, the welding nail fixer 7 is fixed with the positive mandrel 2 of the spot welding gun head 21, then the welding nail 6 is inserted into the through hole at the front end of the welding nail fixer 7, the front end of the spot welding gun is placed on the surface of the sheet metal to be welded, and the welding nail fixer 7 moves along with the positive mandrel 2 in a backward shrinkage mode under the action of pressure, so that the front end of the welding nail 6 and the front end of the negative mandrel 3 are simultaneously contacted with the surface of the sheet metal. The spot welder switch is started at the moment, the positive and negative electrode loops are communicated, the welding nail 6 is firmly welded on the surface of the metal plate, and then the spot welding gun is lifted.

The recess can then be pulled up by the weld nail 6, at which time a puller is required.

As shown in fig. 11 to 16, the embodiment further provides a puller, which includes a pull rod 8, a pull hammer 9 and a pull head 10, wherein the pull rod 8 is externally provided with external threads, and a positioning groove is formed in the front end of the pull rod. The drawing head 10 comprises a fixing part 11 and a clamping part 12, the front end of the fixing part 11 is of a three-piece open conical structure, and the welding nails 6 can be inserted into the three-piece open structure; the rear end of the fixing part 11 is provided with a positioning block, the positioning block is matched with the positioning groove at the front end of the pull rod 8, and the positioning block can be placed into the positioning groove at the front end of the pull rod 8 for positioning. A through hole 13 is formed in the clamping part 12, the front end of the through hole 13 is a conical surface with the same conical inclination as the front end of the fixing part 11, and the rear end of the through hole 13 is of an internal thread structure matched with the external thread of the pull rod 8.

The outer wall of the clamping part 12 is polygonal, the clamping part is hexagonal in the embodiment, meanwhile, an inner hexagonal through hole matched with the outer hexagon of the clamping part 12 is formed in the pull hammer 9, and the pull hammer 9 can be sleeved on the outer wall of the clamping part 12 and enables the clamping part 12 to rotate along with the pull hammer 9.

After the welding of the welding nail 6 is finished, a positioning block at the rear end of a fixing part 11 of a pulling head 10 is inserted into a positioning groove at the front end of a pull rod 8, a threaded hole at the rear end of the fixing part 12 is loosely screwed into an external thread at the front end of the pull rod 8, then the pulling head 10 is placed above the welding nail 6, so that the welding nail 6 is inserted into a three-petal opening at the front end of the fixing part 11, the fixing part 12 is screwed backwards immediately, the three-petal opening at the front end of the fixing part 11 is slowly tightened along with the backward movement of the fixing part 12, and the welding nail 6 is fastened inside. Then, the welding nail 6 is pulled backwards by the backward impact force of the pull hammer 9, so that the pit of the welding part on the surface of the metal plate can be pulled out and repeated for many times. After drawing, the welding nail 6 is rotated to be separated from the surface of the metal plate by using the drawing device, and then the clamping piece 12 is rotated reversely to enable the opening at the front end of the fixing piece 11 to be loose, so that the welding nail 6 is separated from fastening, and the drawing repair process of the metal plate is completed.

As the hexagonal through hole matched with the outer wall of the clamping piece 12 is formed in the pulling hammer 9, the pulling hammer 9 can be sleeved outside the clamping piece 12 to rotate in the process of screwing or loosening the clamping piece 12, auxiliary accessories such as a wrench and the like are omitted, the operation is simpler and more convenient, and the repair efficiency is greatly improved.

Example two

As shown in fig. 3 to 7, the embodiment provides a repairing method for circular meson welding, and is suitable for repairing single-point depressions, multi-point depressions, linear depressions, or the like on the surface of an automobile sheet metal.

On the basis of the structure of the gun head in the embodiment, the embodiment further comprises a negative electrode extension piece 14, the negative electrode extension piece 14 is tubular, and the inner diameter of the negative electrode extension piece 14 is in interference fit with the outer diameter of the negative electrode mandrel 3 of the gun head 21, so that the negative electrode extension piece 14 can be fixedly connected to the negative electrode mandrel 3 of the gun head. Two open grooves 22 are symmetrically formed on the side wall of the front end of the cathode extension member 14.

The drawing piece in the embodiment comprises a round meson 15 and a round meson fixer 16, wherein the tail end of the round meson fixer 16 is of a bolt structure corresponding to a threaded hole in the end part of the positive mandrel 2 and can be fixed with the positive mandrel 2. The front end of the circular meson fixer 16 is provided with an open slot 17, the width of the open slot 17 is larger than the thickness of the circular meson 15, and the depth of the open slot 17 is larger than the radius of the circular meson 15 and smaller than the diameter of the circular meson 15. The distance from the front end of the round meson 15 to the gun body 1 is larger than the distance from the front end of the negative electrode extension piece 14 to the gun body 1, so that the round meson 15 and the negative electrode extension piece 14 can be simultaneously contacted with the surface of a metal plate to form a positive and negative circuit, and good welding is guaranteed. In order to ensure the electrifying effect and the welding quality of the spot welding gun, the anode mandrel 2, the cathode mandrel 3, the cathode extension piece 14, the circular meson fixer 16 and the circular meson 15 are made of copper.

The working principle and the specific implementation of the embodiment are as follows:

when the metal plate surface defects such as single-point depression appear, at first screw up the circle meson fixer 16 and fix the front end at anodal dabber 2, establish negative pole extension 14 cover and fix on negative pole dabber 3, insert circle meson 15 in the open slot 17 of circle meson fixer 16 front end afterwards, place spot welding rifle front end at the needs welded metal plate surface, circle meson fixer 16 follows anodal dabber 2 and moves to the shrink backward under the pressure effect for circle meson 15 front end contacts in the metal plate surface with negative pole extension 14 preceding terminal surface simultaneously. At the moment, a spot welding machine switch is started, the positive circuit and the negative circuit are communicated, the round meson 15 is firmly welded on the surface of the metal plate, and then the spot welding gun is lifted.

And after the welding is finished, the hook-shaped drawing device is used for drawing the circular meson 15 backwards, and the drawing is repeated for multiple times, so that the shaping and repairing of the concave part on the surface of the metal plate can be realized.

EXAMPLE III

As shown in fig. 8-10, the present embodiment provides a repair method for wavy line welding, and is suitable for repairing long and narrow concave portions on the surface of an automobile sheet metal.

On the basis of the structure of the gun head in the first embodiment, this embodiment further includes the negative electrode extension piece 14 in the second embodiment.

The drawing piece in the embodiment comprises a corrugated wire 18 and a corrugated wire fixing device 19, wherein the tail end of the corrugated wire fixing device 19 is of a bolt structure corresponding to a threaded hole in the end part of the positive pole mandrel 2, and the corrugated wire fixing device 19 can be screwed and fixed at the front end of the positive pole mandrel 2. The front end of the corrugated wire fixer 19 is of an inclined plane structure, the top end of the inclined plane is provided with a circular arc groove 20, the diameter of the groove 20 is matched with the diameter of the corrugated wire 18, and the depth of the groove 20 is smaller than the diameter of the corrugated wire 18. The distance from the front end of the corrugated line 18 to the gun body 1 is greater than the distance from the front end of the negative electrode extension piece 14 to the gun body 1, so that the front end of the corrugated line 18 and the front end of the negative electrode extension piece 14 can be in good contact with the surface of a metal plate at the same time, communication between a positive circuit and a negative circuit is realized, and good welding is guaranteed.

The working principle and the specific implementation of the embodiment are as follows:

when long and narrow sunken appears in the sheet metal surface, screw up ripple line fixer 19 at first and fix the front end at positive pole dabber 2, establish negative pole extension 14 cover and fix on negative pole dabber 3, place ripple line 18 at the long and narrow sunken position on the sheet metal surface that needs to draw after the assembly, place the spot welding rifle in ripple line rear side afterwards, make the convex recess 20 of ripple line fixer 19 front end place on a trough of ripple line 18 and sheet metal surface contact, ripple line fixer 19 moves along positive pole dabber 2 backward contraction under the pressure effect for ripple line 18 front end and negative pole extension 14 front end face contact in the sheet metal surface simultaneously. At the moment, a spot welder switch is started, the positive and negative loops are communicated, the corrugated line 18 is firmly welded on the surface of the metal plate, then the spot welding gun is lifted, other troughs of the corrugated line 18 are continuously welded in the same mode, the welding quantity is determined according to the sunken condition of the surface of the metal plate, and the welding of the corrugated line is completed.

After welding, the corrugated line is drawn backwards by the aid of the multi-layer hook-shaped drawing device, and the corrugated line is repeatedly drawn for multiple times, so that shaping and repairing of the concave part on the surface of the metal plate can be achieved. The multilayer colludes form puller and is fixed side by side for a plurality of colludes form pullers and forms, belongs to prior art, no longer gives unnecessary details.

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 in form and details may be made therein without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims (9)

1. The utility model provides an automobile panel beating prosthetic devices, includes the spot welding rifle, draws the ware and draws the piece, the spot welding rifle include the rifle body and with rifle body fixed connection's rifle head, its characterized in that: the gun head comprises a positive mandrel and a negative mandrel, an insulating mandrel is fixed between the positive mandrel and the negative mandrel, a spring is arranged between the positive mandrel and the insulating mandrel, and the positive mandrel can contract and rebound towards the inside of the gun body; the front end of the positive mandrel is provided with a threaded hole, and the drawing piece can be fixedly connected with the front end of the positive mandrel.

2. The automobile sheet metal repairing device according to claim 1, characterized in that: the drawing piece comprises a welding nail and a welding nail fixer, the tail end of the welding nail fixer is of a bolt structure corresponding to a threaded hole at the end part of the anode core shaft, and the center of the welding nail fixer is provided with a through hole which can just accommodate the welding nail to pass through; the distance from the front end of the welding nail to the gun body is larger than the distance from the front end of the negative mandrel to the gun body.

3. The automobile sheet metal repairing device according to claim 1, characterized in that: still include the negative pole extension, the negative pole extension can be fixed on the negative pole dabber of rifle head.

4. The automobile sheet metal repairing device according to claim 3, characterized in that: the negative electrode extension piece is tubular, and two open grooves are symmetrically formed in the side wall of the front end of the negative electrode extension piece.

5. The automobile sheet metal repairing device according to claim 4, characterized in that: the drawing piece comprises a round meson and a round meson fixer, the tail end of the round meson fixer is of a bolt structure corresponding to a threaded hole at the end part of the anode core shaft, the front end of the round meson fixer is provided with an open slot, the width of the open slot is greater than the thickness of the round meson, and the depth of the open slot is greater than the radius of the round meson and less than the diameter of the round meson; the distance from the front end of the round meson to the gun body is larger than the distance from the front end of the negative electrode extension piece to the gun body.

6. The automobile sheet metal repairing device according to claim 4, characterized in that: the drawing piece comprises a corrugated wire and a corrugated wire fixer, the tail end of the corrugated wire fixer is of a bolt structure corresponding to a threaded hole at the end of the anode core shaft, the front end of the corrugated wire fixer is of an inclined plane structure, the top end of the inclined plane is provided with an arc-shaped groove, the diameter of the groove is matched with that of the corrugated wire, and the depth of the groove is smaller than that of the corrugated wire; the distance from the front end of the corrugated line to the gun body is greater than the distance from the front end of the negative electrode extension piece to the gun body.

7. The automobile sheet metal repair device according to claim 1 or 2, characterized in that: the puller comprises a pull rod, a pull hammer and a pull head, wherein the pull rod is externally provided with an external thread, and the front end of the pull rod is internally provided with a positioning groove; the drawing head comprises a fixing piece and a clamping piece, the front end of the fixing piece is of a cone structure with a three-piece opening, a welding nail can be inserted into the three-piece opening structure, the rear end of the fixing piece is provided with a positioning block, and the positioning block is matched with a positioning groove in the front end of the pull rod; the clamping piece is internally provided with a through hole, the front end of the through hole is a conical surface with the same conical inclination as the conical inclination of the front end of the fixing piece, and the rear end of the through hole is of an internal thread structure matched with the external thread of the pull rod.

8. The automobile sheet metal repairing device according to claim 7, characterized in that: the outer wall of the clamping piece is polygonal, and an inner polygonal through hole matched with the polygon of the clamping piece is formed in the drawing hammer.

9. The automobile sheet metal repairing device according to claim 8, characterized in that: and the outer wall of the clamping piece and the inner wall of the pulling hammer are both of a hexagonal structure.

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