Anti-deformation clamp for automobile part welding

Abstract

The utility model relates to the technical field of automobile part machining, and discloses an automobile part welding anti-deformation clamp which comprises a connecting plate, a clamping assembly is arranged on the top face of the connecting plate, the clamping assembly comprises a sliding groove formed in the top face of the connecting plate, and a two-way lead screw is rotationally connected into the sliding groove. The outer wall of the bidirectional screw rod is in threaded connection with two clamping plates, a first motor is fixed to the rear side of the connecting plate, and an output shaft of the first motor penetrates and extends into the sliding groove and is fixed to one end of the bidirectional screw rod. According to the automobile part clamping device, the two clamping plates are arranged, when an automobile part is gradually clamped by the two clamping plates, the clamping rods are attached to the outer wall of the automobile part and contract according to the concave-convex degree of the outer wall of the automobile part, and when the outer wall of the automobile part is evenly attached by the multiple clamping rods, the clamping rods are locked; therefore, the outer wall face of the automobile part is evenly subjected to clamping force, local sunken deformation of the automobile part caused by uneven stress is avoided, and the yield is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts processing, in particular to an automobile parts welding anti-deformation fixture. Background Art

[0002] When producing cars, a large number of metal structures are generally required to be welded to form the body structure. When welding the car parts, the car parts need to be clamped at an angle. Existing car part fixtures generally make rigid contact with the surface of the car parts, which can easily cause deformation of the car parts when clamping them.

[0003] An existing anti-deformation clamp for welding automobile parts (Announcement No.: CN220427334U) has the following defects: the above-mentioned device uses a chuck with adjustable length to squeeze and clamp the surface of the automobile part, and can shrink according to the convexity of the automobile part surface to ensure flexible clamping. However, since a spring is used as a telescopic part, when a certain chuck is in contact with the convex surface of the part, the other chucks have not yet contacted the part. After all the chucks are in contact with the part surface, the compression amount of the chuck spring located on the convex surface of the part is much greater than the compression amount of the chuck spring located on the concave surface of the part, resulting in a large extrusion force on the chuck located on the convex surface of the part, and the extrusion force is large only on the convex surface area, resulting in uneven force on the surface of the part, making the convex surface of the part easily squeezed and deformed, affecting the yield rate of the part. For this reason, the present utility model is proposed. Utility Model Content

[0004] The utility model aims to solve the problems existing in the prior art and provides an anti-deformation fixture for welding automobile parts.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A welding anti-deformation fixture for automobile parts includes a connecting plate, a clamping assembly is provided on the top surface of the connecting plate, the clamping assembly includes a sliding groove opened on the top surface of the connecting plate, a bidirectional screw is rotatably connected inside the sliding groove, and the outer wall of the bidirectional screw is threadedly connected to two clamping plates, a first motor is fixed to the rear side of the connecting plate, the output shaft of the first motor extends through the interior of the sliding groove and is fixed to one end of the bidirectional screw, a plurality of sliding holes are opened on both sides of the two clamping plates close to each other, a clamping rod is inserted into the interior of the sliding hole, and locking nuts are provided on the left and right sides of the clamping rod.

[0007] Preferably, two fixing bars are fixed on both sides of the two clamping plates close to each other, and several driving rods are rotatably connected between the two fixing bars. A movable hole is provided on one side of the clamping rod, and several clamping rods in the same length direction of the clamping plate are grouped as a group. Several driving rods are respectively inserted into the movable holes of several clamping rods in several groups, and opposite threads are provided on the outer walls of the driving rod close to the clamping rod. The locking nut is threadedly connected to the outer wall of the driving rod, and the left end of the driving rod extends to the left side of the clamping plate. A gear is fixed to the left end of the driving rod, and the gears of the several driving rods are driven by toothed belts. A second motor is fixed to the left side of the clamping plate, and the output shaft of the second motor is fixed to the gear at the left end of the clamping plate closest to the bottom surface of the clamping plate.

[0008] Preferably, a plurality of limiting rods are fixed between the two fixing bars on the clamping plate, a limiting hole is provided on one side of the locking nut, and the limiting rods are inserted into the limiting hole.

[0009] Preferably, a rubber head is fixed to one end of the clamping rod.

[0010] Preferably, anti-slip grooves are provided on both the left and right sides of the clamping rod.

[0011] Preferably, two support rods are fixed inside the sliding groove, and the clamping plate is slidably arranged with the outer walls of the support rods.

[0012] The beneficial effects of the utility model are:

[0013] By setting up two clamping plates, when the auto part is gradually clamped by the two clamping plates, the clamping rod fits against the outer wall of the auto part and shrinks according to the convexity and concavity of the outer wall of the auto part. When the outer wall of the auto part is evenly fitted by multiple clamping rods, the locking nut is brought close to and tightly squeezed against the two sides of the clamping rod by rotating the driving rod, thereby locking the clamping rod so that the clamping rod can no longer move. At this time, the two clamping plates are driven again to tightly clamp the auto part, so that the outer wall surface of the auto part is evenly subjected to the clamping force, avoiding local depression and deformation of the auto part caused by uneven force, and increasing the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure proposed by the utility model;

[0015] Figure 2 This is a schematic diagram of the three-dimensional split structure proposed by the utility model;

[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of the clamping plate proposed by the present invention;

[0017] Figure 4 for Figure 3 A magnified schematic diagram of the local structure of Figure A.

[0018] In the figure: 1. Connecting plate; 2. Clamping plate; 201. Sliding hole; 202. Clamping rod; 203. Locking nut; 204. Driving rod; 205. Sliding groove; 206. Bidirectional screw rod; 207. Fixing bar; 208. Movable hole; 3. Limiting rod; 301. Limiting hole; 4. Rubber head; 5. Anti-slip groove; 6. Support rod. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Please see the attached Figure 1 -Attached Figure 4 , a welding anti-deformation fixture for automobile parts, includes a connecting plate 1, the top surface of the connecting plate 1 is provided with a clamping assembly, the clamping assembly includes a sliding groove 205 opened on the top surface of the connecting plate 1, the interior of the sliding groove 205 is rotatably connected with a bidirectional screw rod 206, the outer wall of the bidirectional screw rod 206 is threadedly connected to two clamping plates 2, a first motor is fixed to the rear side of the connecting plate 1, the output shaft of the first motor extends through the interior of the sliding groove 205 and is fixed to one end of the bidirectional screw rod 206, a number of sliding holes 201 are opened on both sides of the two clamping plates 2 close to each other, a clamping rod 202 is inserted into the sliding hole 201, and a locking nut 203 is provided on the left and right sides of the clamping rod 202.

[0022] In the embodiment, two fixing bars 207 are fixed on both sides of the two clamping plates 2 close to each other, and a number of driving rods 204 are rotatably connected between the two fixing bars 207. A movable hole 208 is provided on one side of the clamping rod 202, and a number of clamping rods 202 in the same length direction of the clamping plate 2 are grouped as a group. A number of driving rods 204 are respectively inserted into the movable holes 208 of a number of clamping rods 202 in a number of groups, and opposite threads are respectively provided on the outer walls of the driving rods 204 close to the clamping rods 202. The locking nut 203 is threadedly connected to the outer wall of the driving rod 204. The left end of the driving rod 204 extends to the left side of the clamping plate 2. A gear is fixed to the left end of the driving rod 204. The gears of the several driving rods 204 are driven by a toothed belt. The left side of the clamping plate 2 is fixed with a The second motor, the output shaft of the second motor is fixed to the gear at the left end of the clamping plate 2 closest to the bottom surface of the clamping plate 2. By setting two clamping plates 2, when the auto part is gradually clamped by the two clamping plates 2, the clamping rod 202 fits with the outer wall of the auto part and shrinks according to the convexity and concavity of the outer wall of the auto part. When the outer wall of the auto part is evenly fitted by multiple clamping rods 202, the locking nut 203 is made close to and tightly squeezed on both sides of the clamping rod 202 by rotating the driving rod 204, and the clamping rod 202 is actually locked so that the clamping rod 202 can no longer move. At this time, the two clamping plates 2 can be driven to tightly clamp the auto part, so that the outer wall surface of the auto part is evenly subjected to the clamping force, thereby avoiding local concavity and deformation of the auto part caused by uneven force, and increasing the yield rate.

[0023] In an embodiment, a plurality of limiting rods 3 are fixed between the two fixing bars 207 on the clamping plate 2, and a limiting hole 301 is opened on one side of the locking nut 203. The limiting rod 3 is inserted into the limiting hole 301. Through the setting and use of the limiting rod 3 and the limiting hole 301, a limiting effect can be played on the locking nut 203 to prevent the locking nut 203 from rotating synchronously due to friction when the driving rod 204 rotates, causing the locking nut 203 to be unable to fit tightly with both sides of the clamping rod 202.

[0024] In the embodiment, a rubber head 4 is fixed to one end of the clamping rod 202. Through the setting and use of the rubber head 4, the rubber head 4 has a certain deformation ability and a large friction coefficient, so that it can better fit the concave and convex surfaces of automobile parts and better clamp and fix automobile parts.

[0025] In an embodiment, anti-slip grooves 5 are provided on both the left and right sides of the clamping rod 202. By setting and using the anti-slip grooves 5, the friction between the clamping rod 202 and the locking nut 203 can be increased, so that the locking nut 203 can lock the clamping rod 202 more tightly.

[0026] In an embodiment, two support rods 6 are fixed inside the sliding groove 205, and the clamping plate 2 and the outer wall of the support rod 6 are slidingly arranged. Through the arrangement and use of the support rod 6, the clamping plate 2 can be supported and limited, so that the two clamping plates 2 are more stable when approaching each other and clamping automobile parts.

[0027] Working principle: When in use, first place the car between the two clamping plates 2, then start the first motor to drive the bidirectional screw 206 to rotate. Under the action of the threaded connection between the clamping plates 2 and the bidirectional screw 206, the two clamping plates 2 are brought closer to each other to gradually clamp the auto part. During this process, several clamping rods 202 are all fitted with the outer wall of the auto part and shrink according to the convexity and concavity of the outer wall of the auto part. When the outer wall of the auto part is evenly fitted by multiple clamping rods 202, start the second motor to drive the drive rod closest to the bottom surface of the clamping plate 2. As the rod 204 rotates, the gears of the plurality of drive rods 204 are engaged with each other through the toothed belt, so that the plurality of drive rods 204 rotate synchronously. Since the outer wall of the drive rod 204 is close to the two sides of the clamping rod 202 and has opposite threads, and the locking nut 203 is threadedly connected to the outer wall of the drive rod 204, the locking nuts 203 on the left and right sides of the clamping rod 202 are close to and tightly fitted to the left and right sides of the clamping rod 202, and the clamping rod 202 is actually locked, so that the clamping rod 202 cannot move anymore. At this time, the drive The two clamping plates 2 can tightly clamp the automobile parts, so that the outer wall surfaces of the automobile parts are evenly subjected to the clamping force, avoiding uneven force that causes local concavity and deformation of the automobile parts, and increasing the yield rate. The setting and use of the limiting rod 3 and the limiting hole 301 can limit the locking nut 203, preventing the locking nut 203 from rotating synchronously due to friction when the driving rod 204 rotates, causing the locking nut 203 to be unable to fit tightly with both sides of the clamping rod 202. The setting and use of the rubber head 4 can effectively prevent the locking nut 203 from rotating synchronously due to friction when the driving rod 204 rotates. The rubber head 4 has a certain deformation ability and a large friction coefficient, so it can better fit the concave and convex surfaces of automobile parts and better clamp and fix automobile parts. Through the setting and use of the anti-slip groove 5, the friction between the clamping rod 202 and the locking nut 203 can be increased, so that the locking nut 203 can lock the clamping rod 202 more tightly. Through the setting and use of the support rod 6, the clamping plate 2 can be supported and limited, so that the two clamping plates 2 are more stable when approaching each other and clamping automobile parts.

[0028] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An anti-deformation fixture for welding automobile parts, comprising a connecting plate (1), characterized in that: The top surface of the connecting plate (1) is provided with a clamping assembly, which includes a sliding groove (205) opened on the top surface of the connecting plate (1), the interior of the sliding groove (205) is rotatably connected to a bidirectional screw rod (206), the outer wall of the bidirectional screw rod (206) is threadedly connected to two clamping plates (2), a first motor is fixed to the rear side of the connecting plate (1), the output shaft of the first motor extends through the interior of the sliding groove (205) and is fixed to one end of the bidirectional screw rod (206), a plurality of sliding holes (201) are opened on both sides of the two clamping plates (2) close to each other, a clamping rod (202) is inserted into the interior of the sliding hole (201), and locking nuts (203) are provided on the left and right sides of the clamping rod (202).

2. The anti-deformation fixture for welding automobile parts according to claim 1, characterized in that: Two fixing bars (207) are fixed on both sides of the two clamping plates (2) close to each other, and a plurality of driving rods (204) are rotatably connected between the two fixing bars (207). A movable hole (208) is opened on one side of the clamping rod (202). A plurality of clamping rods (202) in the same length direction of the clamping plate (2) are grouped as a group, and a plurality of driving rods (204) are respectively inserted into the movable holes (208) of a plurality of clamping rods (202) in a plurality of groups. The wall is provided with opposite threads on both sides close to the clamping rod (202), and the locking nut (203) is threadedly connected to the outer wall of the driving rod (204). The left end of the driving rod (204) extends to the left side of the clamping plate (2). A gear is fixed to the left end of the driving rod (204), and the gears of the plurality of driving rods (204) are meshed and driven by a toothed belt. A second motor is fixed to the left side of the clamping plate (2), and the output shaft of the second motor is fixed to the gear at the left end of the clamping plate (2) closest to the bottom surface of the clamping plate (2).

3. The anti-deformation fixture for welding automobile parts according to claim 2, characterized in that: A plurality of limiting rods (3) are fixed between the two fixing bars (207) on the clamping plate (2); a limiting hole (301) is provided on one side of the locking nut (203); and the limiting rods (3) are inserted into the limiting hole (301).

4. The anti-deformation fixture for welding automobile parts according to claim 3, characterized in that: A rubber head (4) is fixed to one end of the clamping rod (202).

5. The anti-deformation fixture for welding automobile parts according to claim 4, characterized in that: Anti-slip grooves (5) are provided on both the left and right sides of the clamping rod (202).

6. The anti-deformation fixture for welding automobile parts according to claim 5, characterized in that: Two support rods (6) are fixed inside the sliding groove (205), and the clamping plate (2) and the outer wall of the support rod (6) are slidably arranged.

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