Stud welding gun switching fixture

Abstract

The utility model relates to the technical field of stud welding, discloses a stud welding gun switching fixture, and solves the problems that the positioning is inaccurate and the tolerance of a workpiece cannot be effectively compensated in the traditional stud welding process. The adapter fixture comprises a stud welding gun, a stud chuck, a gun claw, a lining plate, a gun claw positioning plate and the like. During working, the stud welding gun drives the stud chuck and the gun claw to approach the lining plate, the gun claw abuts against the lining plate, the gun claw positioning plate is connected with the circular hole of the lining plate through the shaft ring, and the plum blossom hole assists in positioning. A wedge-shaped groove of the lining plate is embedded into a wedge-shaped protruding strip of the C-shaped opening frame plate, the telescopic connecting rod in a column hole in the side wall of the C-shaped opening frame plate stretches out and draws back according to tolerance changes of a welded workpiece and the lining plate, the folding expansion plate is linked to drive the pressing plate to tightly abut against the workpiece, the positioning bolts lock the positions of all components, and welding precision and stability are guaranteed. And the welding quality and the process reliability are effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to stud welding technical field, concretely is a kind of stud welding gun adapter fixture. BACKGROUND

[0002] Stud welding is the contact of one end of stud with the surface of plate or pipe, arc is generated by power supply, after the contact surface is melted, a certain pressure is given to stud to complete welding.Stud welding has the advantages of fast, reliable, simple operation, low cost, etc., can replace riveting, drilling, manual arc welding and other connection processes, can weld carbon steel, stainless steel, aluminum, copper and its alloy and other metals, and is widely used in construction, shipbuilding, automobile manufacturing, power equipment, household appliances and other fields.

[0003] In the conventional stud welding process, when welding stud on flat metal surface, the stud is clamped in the middle of stud welding machine welding gun head, and the three positioning gun claws around the stud are used, the gun claws are pressed to the welding metal surface by hand-held welding gun, the stud tip is contacted with the welded metal, and the welding is successfully completed by pulling the trigger to generate arc discharge.However, when facing the welding condition inside narrow groove, due to the uneven surface of groove, the gun claw loses the plane that can be positioned, so that accurate positioning cannot be realized, and further welding cannot be carried out normally, which seriously affects the operation demand and efficiency of stud welding under special working conditions.

[0004] In view of the above-mentioned related technology, a stud welding gun adapter fixture is provided, which can eliminate the drawbacks of the existing device. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of stud welding gun adapter fixture, adopt the device to work, to solve the problem of inaccurate positioning and unable to effectively compensate workpiece tolerance in the conventional stud welding process.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of stud welding gun adapter fixture, including stud welding gun, the middle part of the gun head of stud welding gun is fixedly arranged with stud chuck, stud chuck is arranged with stud by clamping, three gun claws for positioning are distributed in the periphery of stud chuck, one end of gun claw is fixedly connected in the gun head of stud welding gun, the other end of gun claw is abutted with backing plate, and backing plate is movably connected with gun claw positioning plate.The public difference compensation mechanism is embeddedly connected on backing plate.

[0007] The tolerance compensation mechanism comprises a C-shaped open frame plate, a telescopic connecting rod, a pressing plate, a folded expansion plate and a positioning bolt, a plurality of column holes are formed in the side wall of the plate body of the C-shaped open frame plate, the telescopic connecting rod is slidably connected in the column holes, the other end of the telescopic connecting rod is fixedly connected with the pressing plate, the pressing plate abuts against the end face of the welded workpiece, the C-shaped open frame plate and the pressing plate are connected through the telescopic connecting rod and the folded expansion plate, the bottom end of the folded expansion plate is fixedly connected on the pressing plate, the top end of the folded expansion plate abuts against the C-shaped open frame plate, and threaded holes are formed in the corresponding positions of the C-shaped open frame plate, the pressing plate and the folded expansion plate, and the positioning bolt is screwed in the threaded holes.

[0008] Preferably, two wedge-shaped protrusions are symmetrically arranged on the end face of the C-shaped open frame plate connected with the backing plate.

[0009] Preferably, a plurality of wedge-shaped grooves matched with the wedge-shaped protrusions are equidistantly arranged at the bottom end of the backing plate.

[0010] Preferably, round holes are symmetrically formed at the two ends of the backing plate.

[0011] Preferably, the tulip hole structure composed of the gun claw hole and the chuck hole is matched with the stud chuck and the gun claw of the stud welding gun.

[0012] Preferably, the tulip hole structure is composed of three gun claw holes and one chuck hole.

[0013] Preferably, the diameter of the chuck hole is larger than that of the stud chuck.

[0014] Preferably, the inner wall of the chuck hole is movably connected with a shaft ring, and the other end of the shaft ring is movably connected with the round hole.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] 1. The stud welding gun adapter fixture is connected with the backing plate through the shaft ring and the round hole, the tulip hole structure composed of the gun claw hole and the chuck hole is matched with the stud chuck and the gun claw of the stud welding gun, the movement freedom of the stud welding gun is effectively constrained, the position accuracy of the stud in the initial stage of welding is greatly improved, the welding defect rate caused by the positioning deviation is reduced, and the qualified rate and stability of the welded product are improved.

[0017] 2, the utility model discloses a kind of stud welding gun adapter fixture, the close fitting of wedge-shaped convex strip and wedge-shaped recess between C-shaped open frame plate and backing plate, build up stable connection framework, provide reliable support for the stable operation of tolerance compensation mechanism.Colummn hole in the side wall of C-shaped open frame plate, telescopic connecting rod flexibly telescopes according to the tolerance difference between the workpiece to be welded and backing plate, cooperates the deformation compensation function of folding expansion plate, accurately controls the degree of adhesion of pressing plate and the end surface of workpiece to be welded, Ensure that it can be closely and uniformly contacted under different tolerance conditions.This mechanism effectively overcomes the problem that traditional welding tool is difficult to deal with workpiece tolerance change, expands the adaptability of the adapter fixture to diversified welding tasks, reduces welding defects caused by tolerance problems, such as virtual welding, welding deviation, effectively guarantees the consistency and reliability of welding quality, reduces the scrap rate and rework rate in welding process. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is overall structure schematic diagram of the utility model;

[0019] Figure 2 It is tolerance compensation mechanism structure schematic diagram of the utility model;

[0020] Figure 3 It is bottom structure schematic diagram of the utility model;

[0021] Figure 4 It is position structure schematic diagram of screw hole and column hole of the utility model;

[0022] Figure 5 It is plum blossom hole structure schematic diagram of the utility model.

[0023] In the drawing: 1, stud welding gun;11, stud chuck;12, gun claw;13, stud;2, backing plate;201, wedge-shaped recess;202, round hole;3, snatch claw positioning plate;30, plum blossom hole;301, gun claw hole;302, chuck hole;31, shaft ring;5, tolerance compensation mechanism;50, screw hole;51, C-shaped open frame plate;510, column hole;52, telescopic connecting rod;53, pressing plate;54, folding expansion plate;55, positioning bolt;6, wedge-shaped convex strip. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] In order to further understand the content of the utility model, the utility model is described in detail in combination with the drawings.

[0026] In combination Figures 1-5 A stud welding gun adapter fixture, including stud welding gun 1, the middle part of the gun head of stud welding gun 1 is fixedly provided with stud chuck 11, stud chuck 11 is provided with stud 13 in clamping, three gun claws 12 for positioning are distributed on the periphery of stud chuck 11, one end of gun claw 12 is fixedly connected in the gun head of stud welding gun 1, the other end of gun claw 12 is abutted with lining plate 2, and lining plate 2 is movably connected with claw positioning plate 3. Tolerance compensation mechanism 5 is embeddedly connected on lining plate 2.

[0027] Tolerance compensation mechanism 5 includes C-shaped open frame plate 51, telescopic connecting rod 52, pressing plate 53, folding expansion plate 54 and positioning bolt 55, C-shaped open frame plate 51 is used as basic support structure, and the stable shape and structure thereof ensure the overall rigidity of the whole tolerance compensation mechanism 5;Multiple column holes 510 are formed on the side wall of the plate body of C-shaped open frame plate 51, telescopic connecting rod 52 is slidably connected in column hole 510, and the length thereof can be adjusted according to the tolerance change between the welded workpiece and lining plate 2, cooperates with folding expansion plate 54, effectively adapts to different tolerance conditions, and ensures that pressing plate 53 can always abut tightly against the welded workpiece;The other end of telescopic connecting rod 52 is fixedly connected with pressing plate 53, and the end surface of the welded workpiece is abutted with pressing plate 53, which is transmitted through uniform pressure, so that the welding position is uniformly stressed, which helps to improve the welding quality, and the fixed connection of telescopic connecting rod 52 and pressing plate 53 can accurately convert the telescopic movement of the connecting rod into the pressing force on the workpiece;Telescopic connecting rod 52 and folding expansion plate 54 are connected between C-shaped open frame plate 51 and pressing plate 53, the bottom end of folding expansion plate 54 is fixedly connected on pressing plate 53, and the top end of folding expansion plate 54 is abutted with C-shaped open frame plate 51;Folding expansion plate 54 provides auxiliary deformation compensation when telescopic connecting rod 52 telescopes, enhances the response capability of the whole mechanism to the tolerance change, and further improves the adaptation range to different tolerance conditions;Threaded holes 50 are formed on the corresponding positions of C-shaped open frame plate 51, pressing plate 53 and folding expansion plate 54, and positioning bolt 55 is screwed in threaded hole 50. This tolerance compensation mechanism 5 can effectively compensate the tolerance between the welded workpiece and lining plate 2, ensure that pressing plate 53 abuts tightly against the welded workpiece through the telescopic deformation of telescopic connecting rod 52 and folding expansion plate 54, improve the stability and reliability of welding, and reduce the welding defects caused by tolerance. Positioning bolt 55 is used for fixing the relative positions of C-shaped open frame plate 51, pressing plate 53 and folding expansion plate 54, ensuring that the components do not displace during welding, maintaining the stable working state of tolerance compensation mechanism 5, and ensuring the consistency of welding precision.

[0028] The end face of the C-shaped opening frame plate 51 connected with the lining plate 2 is symmetrically fixed with two wedge-shaped protrusions 6. The bottom end of the lining plate 2 is equally spaced with a plurality of wedge-shaped grooves 201 matched with the wedge-shaped protrusions 6. Through the cooperation of the wedge-shaped protrusions 6 and the wedge-shaped grooves 201, the stable connection of the C-shaped opening frame plate 51 and the lining plate 2 is realized, which prevents the displacement of the cushion block 4 during the welding process and ensures the normal work of the tolerance compensation mechanism 5.

[0029] The two ends of the lining plate 2 are symmetrically provided with round holes 202. The two ends of the claw positioning plate 3 are symmetrically provided with tulip holes 30 for positioning the stud chuck 11 and the claw 12 of the stud welding gun 1. The tulip hole 30 is composed of three claw holes 301 and one chuck hole 302. The diameter of the chuck hole 302 is larger than that of the stud chuck 11, so as to facilitate the passage of the stud chuck 11. The inner wall of the chuck hole 302 is movably connected with a shaft ring 31, and the other end of the shaft ring 31 is movably connected with the round hole 202. The round hole 202 on the lining plate 2 is connected with the claw positioning plate 3 through the shaft ring 31, and cooperates with the tulip hole 30 to accurately position the stud chuck 11 and the claw 12 of the stud welding gun 1, thereby improving the position accuracy of the stud during welding, and thus improving the welding quality.

[0030] Working principle: when working, the stud welding gun 1 drives the stud chuck 11 and the claw 12 to approach the lining plate 2, and the claw 12 abuts against the lining plate 2. The claw positioning plate 3 is connected with the round hole 202 of the lining plate 2 through the shaft ring 31, and the tulip hole 30 assists the accurate positioning of the stud chuck 11 and the claw 12. The wedge-shaped grooves 201 on the lining plate 2 are embedded with the wedge-shaped protrusions 6 of the C-shaped opening frame plate 51, so that the C-shaped opening frame plate 51 is stably connected. The telescopic connecting rod 52 in the side wall column hole 510 of the C-shaped opening frame plate 51 body telescopes according to the tolerance change of the workpiece to be welded and the lining plate 2, links the folding expansion plate 54, drives the pressing plate 53 to tightly abut against the workpiece to be welded, and the positioning bolt 55 locks the positions of various components, thereby ensuring the welding precision and stability.

[0031] It should be noted that, in this text, relational terms such as first and second are used merely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0032] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stud welding gun adapter fixture, comprising a stud welding gun (1), a stud chuck (11) is fixedly arranged in the middle of the gun head of the stud welding gun (1), a stud (13) is clamped and arranged on the stud chuck (11), three gun jaws (12) for positioning are distributed on the periphery of the stud chuck (11), one end of the gun jaw (12) is fixedly connected to the gun head of the stud welding gun (1), the other end of the gun jaw (12) abuts against a backing plate (2), and a gun jaw positioning plate (3) is movably connected to the backing plate (2), characterized in that: The gasket (2) is connected with a tolerance compensation mechanism (5) by fitting; The tolerance compensation mechanism (5) comprises a C-shaped open frame plate (51), an extendable connecting rod (52), a pressing plate (53), a folding expansion plate (54) and a positioning bolt (55), a plurality of column holes (510) are formed in the side wall of the plate body of the C-shaped open frame plate (51), the extendable connecting rod (52) is slidably connected in the column hole (510), the other end of the extendable connecting rod (52) is fixedly connected with the pressing plate (53), the pressing plate (53) abuts against the end face of the welded workpiece, the C-shaped open frame plate (51) and the pressing plate (53) are connected through the extendable connecting rod (52) and the folding expansion plate (54), the bottom end of the folding expansion plate (54) is fixedly connected on the pressing plate (53), the top end of the folding expansion plate (54) abuts against the C-shaped open frame plate (51), threaded holes (50) are formed in the corresponding positions of the C-shaped open frame plate (51), the pressing plate (53) and the folding expansion plate (54), and the positioning bolt (55) is screwed in the threaded hole (50).

2. A conversion fixture for a stud welding gun according to claim 1, characterized in that: Two wedge-shaped protrusions (6) are symmetrically and fixedly arranged on the end face of the C-shaped open frame plate (51) connected with the gasket (2).

3. A conversion fixture for a stud welding gun according to claim 2, wherein: A plurality of wedge-shaped grooves (201) matched with the wedge-shaped protrusions (6) are equidistantly arranged at the bottom end of the gasket (2).

4. The adapter fixture for stud welding gun according to claim 1, wherein: Circular holes (202) are symmetrically formed at the two ends of the gasket (2).

5. The adapter fixture for stud welding gun according to claim 1, characterized in that: The wrench positioning plate (3) is symmetrically provided with tulip holes (30) at the two ends, which are convenient for positioning the stud chuck (11) and the wrench jaw (12) of the stud welding gun (1).

6. A transfer fixture for a stud welding gun according to claim 5, wherein: The tulip hole (30) is composed of three wrench jaw holes (301) and one chuck hole (302).

7. A stud welding gun adapter fixture according to claim 6, wherein: The diameter of the chuck hole (302) is larger than that of the stud chuck (11).

8. A stud welding gun adapter fixture according to claim 6, wherein: An axle ring (31) is movably connected to the inner wall of the chuck hole (302), and the other end of the axle ring (31) is movably connected to the circular hole (202).

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