Welding treatment clamp with high stability

Abstract

The utility model relates to the field of welding fixtures, in particular to a high-stability welding processing fixture which comprises a base, and four clamping assemblies capable of clamping a circular tube and driving a circular tube-shaped workpiece to rotate are arranged on the upper side of the base. The upper side of the base is provided with a welding assembly which is located on the upper side of the axis of the circular-tube-shaped workpiece and can conduct fixed-point welding or uniform movable welding, the clamping assembly clamps two sections of the circular-tube-shaped workpiece and drives the circular-tube-shaped workpiece to rotate, and at the moment, a welding head is aligned to the highest point of the periphery of the circular-tube-shaped workpiece in a fixed-point mode and serves as a welding position; when the clamping assembly rotates, the circumferences of the two sections of circular-tube-shaped workpieces can be stably welded along with rotation of the circular-tube-shaped workpieces, if the clamping assembly clamps the rolled circular-tube-shaped workpieces and does not drive the rolled circular-tube-shaped workpieces to rotate, the welding head moves along the axes of the circular-tube-shaped workpieces at a uniform speed, and stable welding of the rolled circular-tube-shaped workpieces can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding fixture field, concretely is a welding treatment fixture with high stability. BACKGROUND

[0002] The melting welding is the method that the welding joint is under the action of high temperature etc. to melt state in the welding process. Because the welded workpiece is closely attached together, under the action of temperature field, gravity etc., two workpieces melt liquid will have mixing phenomenon without pressure. After temperature decreases, the melted part coagulates, and two workpieces are firmly welded together, completing the welding.

[0003] In the melting welding process of the round pipe workpiece, due to the arc shape of the workpiece surface, if the relative position between the workpiece and the welding head is unstable or deviates during welding, the molten pool formed by welding will slide along the surface of the round pipe workpiece, affecting the weld quality. The traditional welding fixture needs to be manually held by the welding gun after clamping the round pipe workpiece, so that the welding point cannot be ensured to be located at the highest point of the pipe outer periphery, which is easy to cause the molten pool formed by welding to slide along the workpiece surface.

[0004] Therefore, it is necessary to design a welding treatment fixture with high stability to alleviate the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a welding treatment fixture with high stability, which overcomes the above-mentioned defects in the prior art.

[0006] According to the welding treatment fixture with high stability, four clamping assemblies that can clamp the round pipe and drive the round pipe workpiece to rotate are arranged on the upper side of the base, and a welding assembly that can be fixedly welded or uniformly moved and welded is arranged on the upper side of the base and located on the upper side of the axis of the round pipe workpiece.

[0007] Through the above technical scheme, the clamping assembly clamps two sections of the round pipe workpiece and drives it to rotate. At this time, the welding assembly is fixedly aligned with the highest point of the outer periphery of the round pipe workpiece and takes it as the welding position. With the rotation of the round pipe workpiece, stable welding of the circumference of the two sections of the round pipe workpiece can be realized. If the clamping assembly clamps the rolled round pipe workpiece and does not drive it to rotate, the welding assembly moves uniformly along the axis of the round pipe workpiece, and stable welding of the rolled round pipe workpiece can be realized.

[0008] Further, the clamping assembly includes two support plates arranged on both sides of the welding assembly and four rotatable rollers, and the rollers can abut against the outer peripheral wall of the round pipe workpiece.

[0009] Through the above technical scheme, the rollers and the outer peripheral wall of the round pipe workpiece are used to clamp the round pipe workpiece.

[0010] Further, two air cylinders symmetrically arranged above and below are fixed in the support plate, the piston rods of the air cylinders are fixed with roller seats near one end of the circular pipe-shaped workpiece, each roller is rotatably connected in the roller seat on the corresponding side, each roller seat is fixed with a servo motor on one side, and each roller is fixedly connected with the output shaft of the servo motor on the corresponding side.

[0011] Through the technical scheme, the servo motor can accurately control the rotation angle of the roller, thereby stably controlling the rotation angle of the circular pipe-shaped workpiece, and ensuring the welding quality.

[0012] Further, the included angle between the air cylinder and the horizontal plane is 45°.

[0013] Through the technical scheme, the four air cylinders in each clamping assembly are evenly distributed in the circumferential direction of the circular pipe-shaped workpiece as the center, thereby uniformly holding the circular pipe-shaped workpiece.

[0014] Further, the welding assembly comprises a screw rod, connecting frames fixed at both ends of the screw rod, lifting buckles fixed at both ends of the connecting frames, and a welding head in sliding connection with the screw rod, and the four lifting buckles are respectively located on the four outermost support plates in sliding connection.

[0015] Through the technical scheme, the lifting buckle slides on the corresponding side support plate, and the distance between the welding head and the workpiece can be adjusted, so that it is suitable for welding work of circular pipe-shaped workpieces of different diameters.

[0016] Further, grooves along the height direction are formed on the four outermost support plates, the four lifting buckles are in the shape of "C", the inner side of the lifting buckle is fixed with an inwardly protruding protrusion, the protrusion slides in the corresponding side groove, the four lifting buckles are respectively clamped on the corresponding side support plate and slide along the height direction of the support plate, and a limiting bolt abutting against the corresponding side support plate is threadedly connected in the lifting buckle.

[0017] Through the technical scheme, the limiting bolt abuts against the support plate after rotation, and the lifting buckle is limited on the corresponding side support plate, thereby realizing the positioning of the welding head.

[0018] Further, the connecting frames are vertically arranged between the guide rods, the welding head is located between the two connecting frames, the guide rods penetrate the welding head, a screw rod penetrating the welding head is rotatably connected between the two connecting frames, one side end surface of one of the connecting frames away from the welding head is fixed with a stepping motor, and the screw rod is fixedly connected with the output shaft of the stepping motor.

[0019] Through the technical scheme, the rotation number of the screw rod can be controlled by the stepper motor, so that the movement speed and distance of the welding head can be controlled, and thus the welding head can be better adapted to different welding conditions.

[0020] The utility model discloses the beneficial effect is: clamping assembly clamps two section tight round pipe shape workpieces, and drives its rotation, welding head fixed point alignment round pipe shape workpiece outer periphery highest point at this moment, and with this as the welding position, with round pipe shape workpiece rotation can realize the stable welding of the circumference of two section round pipe shape workpieces, if clamping assembly clamps the round pipe shape workpiece after coiling and does not drive its rotation, then welding head along round pipe shape workpiece axis uniform velocity motion can realize the stable welding of the coiled round pipe shape workpiece. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the structure schematic diagram of the utility model;

[0022] Figure 2 It is the sectional view of clamping assembly in the utility model;

[0023] Figure 3 It is the structure schematic diagram of the utility model in the roller seat;

[0024] Figure 4 It is the structure schematic diagram of the utility model in the welding assembly.

[0025] In the drawing:

[0026] 10, base plate; 20, clamping assembly; 21, roller seat; 22, air cylinder; 23, support plate; 24, roller; 30, welding assembly; 31, lifting buckle; 32, connecting frame; 33, screw rod; 34, guide rod; 35, welding head; 36, limit bolt. DETAILED DESCRIPTION

[0027] In the description of the utility model, it is understood that the orientation or position relation of the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the drawings of the utility model, and is only for the convenience of the simplified description of the utility model, and is not indicative or implied that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. Figure 1

[0028] ​In order to make the utility model of the purpose and the advantage more clearly, the following is specifically explained with examples, and it should be understood that the following text is only used to describe one or several specific embodiments of the utility model, and does not strictly limit the protection scope requested by the utility model, as used in this text, the terms up and down and left and right are not limited to their strict geometric definitions, but include the tolerance of reasonable and inconsistent machining or human error, and the specific features of the high-stability welding treatment clamp are described in detail as follows:

[0029] One embodiment of the utility model:

[0030] Referring to Figures 1-4 The utility model provides a high -stability welding treatment clamp, including base 10, four clamping assemblies 20 that can be clamped round pipe and drive round pipe workpiece rotation are provided on the upside of base 10, the welding assembly 30 that can fixed point welding or even mobile welding is provided on the upside of base 10 and is located upside on the axis of round pipe workpiece.

[0031] Referring to Figure 2 Clamping assembly 20 includes two support plates 23 arranged on the two sides of welding assembly 30 and four rotatable rollers 24, the roller 24 is made of hard rubber, the surface is frosted surface, the roller 24 can be in contact with the outer circumferential wall of round pipe workpiece, two up-down symmetrical gas cylinders 22 are fixed in support plate 23, the piston rod of gas cylinder 22 is fixed with roller seat 21 close to the one end of round pipe workpiece, each roller 24 is rotatably connected in the roller seat 21 of the corresponding side, each roller seat 21 side is fixed with servo motor, each roller 24 is fixedly connected with the output shaft of the corresponding side servo motor, the included angle between gas cylinder 22 and horizontal plane is 45 °.

[0032] Referring to Figure 4 Welding assembly 30 includes screw 33, connecting frame 32 fixed at the two ends of screw 33, lifting buckle 31 fixed at the two ends of connecting frame 32 and welding head 35 slidingly connected with screw 33, four lifting buckles 31 are positioned along the four support plates 23 located at the most edge and are positioned, recesses along the height direction are formed in the four support plates 23 located at the most edge, four lifting buckles 31 are in the shape of "C", the inner side of lifting buckle 31 is fixedly provided with inwardly protruding protrusions, the protrusions are slidingly arranged in the corresponding side recess, four lifting buckles 31 are respectively clamped on the corresponding side support plate 23 and are slidingly arranged along the height direction of support plate 23, the lifting buckle 31 is screwedly connected with the limiting bolt 36 abutting against the corresponding side support plate 23.

[0033] The vertical connection between the connecting frame 32 and the guide rod 34, the welding head 35 is located between the two connecting frame 32, the guide rod 34 through the welding head 35, the two connecting frame 32 between the rotating connection has through the welding head 35 screw rod 33, one of the connecting frame 32 away from the welding head 35 side end face fixed with step motor, the screw rod 33 and the output shaft of the step motor fixed connection.

[0034] Before the workpiece is welded, the cylinder 22 is in the shortest state, and then the circular pipe-shaped workpiece to be welded is placed between the four rollers 24, and the abutment of the two sections of the circular pipe-shaped workpiece is located between the two clamping assemblies 20 on the middle side, at this time, the cylinder 22 is started, so that the piston rod of the cylinder 22 is elongated, so as to drive the roller seat 21 to move towards the circular pipe-shaped workpiece, and then the roller 24 is moved close to the circular pipe-shaped workpiece until the circular pipe-shaped workpiece is clamped, and then the cylinder 22 is closed.

[0035] Then the step motor is started, so as to drive the screw rod 33 to rotate, and then drive the welding head 35 to move, until the welding head 35 is aligned with the abutment position of the two end circular pipe-shaped workpieces, and then the step motor is closed.

[0036] Then the limiting bolt 36 is loosened, so that the lifting buckle 31 can slide freely on the support plate 23, and after the welding head 35 is adjusted to a specified height from the surface of the workpiece, the limiting bolt 36 is tightened and abuts against the roller seat 21, so that the welding head 35 maintains the corresponding height.

[0037] At this time, the welding head 35 and the servo motor are started, and then the circular pipe-shaped workpiece rotates at a constant speed under the drive of the servo motor, and the welding head 35 uniformly and stably welds the two sections of the circular pipe-shaped workpiece.

[0038] If it is necessary to weld the two sides of the rolled circular pipe-shaped workpiece, the workpiece is clamped by the four rollers 24 in each clamping assembly 20 so that the two sides abut, then the welding head 35 moves to one end of the weld, and then the welding head 35 and the servo motor are started, so that the welding head 35 moves uniformly along the weld to the other end of the weld, thereby realizing stable welding of the rolled circular pipe-shaped workpiece.

[0039] Those skilled in the art can clearly make various modifications to the above embodiments without departing from the overall spirit and concept of the present application. All fall within the scope of the present application. The protection scheme of the present application is subject to the claims of the present application.

Claims

1. A welding fixture with high stability, comprising a base (10), characterized in that: The base (10) is provided with four clamping assemblies (20) on the upper side, which can clamp and drive the rotation of the circular pipe workpiece, and the base (10) is provided with a welding assembly (30) on the upper side of the axis of the circular pipe workpiece, which can be fixed-point welded or uniformly moved and welded.

2. The welding fixture according to claim 1, wherein: The clamping assembly (20) comprises two support plates (23) arranged on both sides of the welding assembly (30) and four rotatable rollers (24), which can abut the outer peripheral wall of the circular pipe workpiece.

3. The welding fixture of claim 2, wherein: The support plate (23) is fixed with two gas cylinders (22) arranged symmetrically above and below, the piston rod of the gas cylinder (22) is fixed with a roller seat (21) close to one end of the circular pipe workpiece, each roller (24) is rotatably connected in the roller seat (21) on the corresponding side, and each roller seat (21) is fixed with a servo motor on one side, and each roller (24) is fixedly connected with the output shaft of the servo motor on the corresponding side.

4. The welding fixture of claim 3, wherein: The included angle between the gas cylinder (22) and the horizontal plane is 45°.

5. The welding fixture of claim 2, wherein: The welding assembly (30) comprises a screw rod (33), a connecting frame (32) fixed on both ends of the screw rod (33), a lifting buckle (31) fixed on both ends of the connecting frame (32), and a welding head (35) in sliding connection with the screw rod (33), and four lifting buckles (31) are respectively arranged along the four outermost support plates (23) and positioned.

6. The welding fixture of claim 5, wherein: The four outermost support plates (23) are provided with grooves along the height direction, the four lifting buckles (31) are in the shape of "C", the inner side of the lifting buckle (31) is fixed with an inward protruding protrusion, the protrusion is slidably arranged in the corresponding groove, the four lifting buckles (31) are respectively arranged on the corresponding support plate (23) and slid along the height direction of the support plate (23), and the lifting buckle (31) is threadedly connected with a limiting bolt (36) abutting against the corresponding support plate (23).

7. The welding fixture of claim 6, wherein: The connecting frame (32) is arranged vertically between the guide rod (34), the welding head (35) is located between the two connecting frames (32), the guide rod (34) penetrates the welding head (35), the screw rod (33) penetrates the welding head (35) and is rotatably connected between the two connecting frames (32), one side end surface of one connecting frame (32) away from the welding head (35) is fixed with a stepping motor, and the screw rod (33) is fixedly connected with the output shaft of the stepping motor.

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