Special-shaped workpiece welding and fixing tool

Abstract

The utility model discloses a special-shaped workpiece welding fixing tool which comprises a base and a machining table, one end of the top of the base is connected with a vertical frame, a transverse rod is connected in the vertical frame in a sliding mode, the machining table is connected to the center of the top of the base, and a fixing assembly is arranged at the top of the machining table and comprises a first clamping block and a second clamping block. The first clamping block is connected to the top of the machining table in a sliding mode, the second clamping block is connected to the top of the machining table, a plurality of sleeves are connected into the first clamping block and the second clamping block, and fixing rods are connected into the sleeves in a sliding mode. The special-shaped workpiece clamping device can effectively adapt to the irregular contour of a special-shaped workpiece, the elastic force of the spring enables the protruding pad on the fixing rod to be tightly attached to the surface of the workpiece, multiple fixing points act at the same time, it is ensured that the special-shaped workpiece is stably clamped during welding, shaking and displacement are reduced, the welding positioning accuracy is greatly improved, and then the welding quality and the overall performance of a product are improved.

Description

Technical Field

[0001] This utility model belongs to the field of welding technology for irregularly shaped workpieces, and specifically relates to a welding fixture for irregularly shaped workpieces. Background Technology

[0002] In the current booming development of modern manufacturing, welding, as a key processing technology, is widely used in the production of various products. With the continuous innovation of product design and the increasing diversification of functional requirements, irregularly shaped workpieces are used more and more frequently in many fields, covering industries such as automobile manufacturing, aerospace, machining, and medical devices. Irregularly shaped workpieces are characterized by irregular shapes and complex and diverse structures. Their unique shape design is designed to meet specific functional requirements, but this also brings unprecedented challenges to welding processing.

[0003] Existing welding fixtures are mainly suitable for workpieces with regular shapes and simple structures. These fixtures usually adopt standardized positioning and clamping methods, such as simple clamps and vises, to constrain the workpiece through fixed clamping points or planes. However, when faced with irregular workpieces, traditional fixtures are difficult to achieve precise positioning and stable fixation. The irregular contours of irregular workpieces make it difficult to find a suitable reference surface during clamping, and it is impossible to guarantee the consistency of the workpiece position each time it is clamped. This results in a large deviation in the weld position during welding, which seriously affects the welding quality and the overall performance of the product. Utility Model Content

[0004] The purpose of this utility model is to provide a welding and fixing fixture for irregularly shaped workpieces to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a welding and fixing fixture for irregularly shaped workpieces, comprising:

[0006] A base, one end of which is connected to a support frame and a crossbar is slidably connected inside the support frame;

[0007] A processing table is connected to the center of the top of the base and is used for welding irregularly shaped workpieces. The top of the processing table is provided with a fixing component for clamping and fixing the irregularly shaped workpieces during welding. The fixing component includes a first clamping block and a second clamping block. The first clamping block is slidably connected to the top of the processing table, and the second clamping block is connected to the top of the processing table. Several sleeves are connected inside the first clamping block and the sleeves are slidably connected with fixing rods.

[0008] Preferably, a spring is connected inside the sleeve, and one end of the spring is connected to the fixed rod.

[0009] Preferably, the end of the fixed rod outside the sleeve is connected with a convex pad, the bottom of the first clamping block is connected with a guide block, and one end of the guide block is slidably penetrated through the opening in the middle of the processing table.

[0010] Preferably, one end of the processing table is provided with a first cylinder, the piston rod of the first cylinder is movably penetrated through the processing table and connected with the guide block, and one end of the guide block inside the processing table is rotatably connected with a roller.

[0011] Preferably, the bottom of the horizontal rod is rotatably connected with a turntable through a bearing, the top of the horizontal rod is provided with a motor, and the output shaft of the motor is rotatably penetrated through the horizontal rod and connected with the turntable.

[0012] Preferably, a sliding groove is formed in the center of the bottom of the turntable, a laser welding gun is slidably connected in the sliding groove, a guide rod is connected in the sliding groove, and one end of the laser welding gun is slidably sleeved on the guide rod.

[0013] Preferably, a second cylinder is arranged in the turntable, and the piston rod of the second cylinder is connected with the laser welding gun.

[0014] Preferably, the top of the stand is provided with a third cylinder, and the piston rod of the third cylinder is connected with the horizontal rod.

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

[0016] (1) The tooling is composed of a fixing assembly of a first clamping block, a second clamping block, a sleeve inside, a fixed rod and a spring, can effectively adapt to irregular contours of special-shaped workpieces, the spring force makes the convex pad on the fixed rod tightly adhere to the surface of the workpiece, multiple fixing points act simultaneously, ensures that the special-shaped workpiece is stably clamped during welding, reduces shaking and displacement, greatly improves the accuracy of welding positioning, guarantees the accuracy of the weld position, and further improves the welding quality and overall performance of the product.

[0017] (2) The first cylinder drives the guide block to slide and drive the first clamping block to slide, the distance between the clamping blocks can be flexibly adjusted, special-shaped workpieces of different sizes can be adapted, the roller on the guide block reduces sliding friction, the adjustment process is more smooth, meanwhile, the horizontal rod in the stand can be lifted through the third cylinder, the turntable at the bottom of the horizontal rod can be rotated under the drive of the motor, the position and angle of the laser welding gun are convenient to adjust, the operation is simple, and the welding work efficiency is improved.

[0018] (3) The convex pad at the end of the fixed rod is made of soft material with certain friction, when clamping the special-shaped workpiece, sufficient clamping force can be provided, and the surface of the workpiece can be prevented from being scratched or damaged, the appearance and surface quality of the workpiece are protected, and it is especially suitable for welding of special-shaped workpieces with high surface quality requirements. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1The utility model discloses a structure schematic view.

[0020] Figure 2 It is the utility model first clamping block's sectional view.

[0021] Figure 3 It is the utility model processing platform's plan view.

[0022] Figure 4 It is the utility model turntable's bottom view.

[0023] In the drawing: 1, base, 2, stand, 3, cross bar, 4, processing platform, 5, first clamping block, 6, second clamping block, 7, sleeve, 8, fixed link, 9, spring, 10, convex pad, 11, guide block, 12, opening, 13, first cylinder, 14, roller, 15, turntable, 16, motor, 17, sliding slot, 18, laser welding gun, 19, guide rod, 20, second cylinder, 21, third cylinder. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with 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 the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] The utility model provides a kind of special-shaped workpiece welding fixed tool as Figures 1-4 As shown in the drawing, it includes:

[0026] Base 1, the top of the base 1 one end is connected with stand 2, and the stand 2 is slidably connected with cross bar 3;

[0027] Processing platform 4, the processing platform 4 is connected to the center of the top of base 1, for welding special-shaped workpiece, the top of the processing platform 4 is provided with a fixing assembly for clamping and fixing during welding special-shaped workpiece, the fixing assembly includes first clamping block 5, second clamping block 6, the first clamping block 5 is slidably connected to the top of the processing platform 4, the second clamping block 6 is connected to the top of the processing platform 4, and the first clamping block 5 and the second clamping block 6 are slidably connected with fixed link 8 in a plurality of sleeves 7 connected in the first clamping block 5 and the second clamping block 6.

[0028] The sleeve 7 is connected with a spring 9, one end of the spring 9 is connected with the fixed rod 8, when it is needed to clamp the special-shaped workpiece, the workpiece is placed between the first clamping block 5 and the second clamping block 6, because the surface profile of the special-shaped workpiece is irregular, the convex pad 10 at the end of the fixed rod 8 will first contact the surface of the workpiece, at this time, the spring 9 will be deformed according to the shape and position of the surface of the workpiece, if the surface of the workpiece has a protrusion, the spring 9 will be compressed, if there is a recess, the spring 9 will be elongated, so that the fixed rod 8 can adaptively adjust the position, to ensure that the convex pad 10 is always closely attached to the surface of the workpiece.

[0029] The end of the fixed rod 8 outside the sleeve 7 is connected with a convex pad 10, the bottom of the first clamping block 5 is connected with a guide block 11, and one end of the guide block 11 slidably penetrates the opening 12 in the middle of the machining table 4.

[0030] One end of the machining table 4 is provided with a first air cylinder 13, the piston rod of the first air cylinder 13 movably penetrates the machining table 4 and is connected with the guide block 11, one end of the guide block 11 inside the machining table 4 is rotatably connected with a roller 14, during the movement of the guide block 11, the roller 14 will contact and roll on the corresponding track or surface inside the machining table 4, this rolling mode changes the original sliding friction between the guide block 11 and the machining table 4 into rolling friction, so that the first clamping block 5 moves more smoothly.

[0031] The bottom of the cross bar 3 is rotatably connected with a turntable 15 through a bearing, the top of the cross bar 3 is provided with a motor 16, and the output shaft of the motor 16 rotatably penetrates the cross bar 3 and is connected with the turntable 15, when the turntable 15 rotates, it will drive the laser welding gun 18 to make circular motion, in cooperation with the sliding of the laser welding gun 18 in the sliding groove 17, the laser welding gun 18 can reach any position in the circular range with the bearing as the center, so that the angle and position of the laser welding gun 18 can be flexibly adjusted according to the different shapes of the special-shaped workpiece and the welding requirements, and the special-shaped workpiece can be welded in all directions.

[0032] The bottom center of the turntable 15 is provided with a sliding groove 17, and the laser welding gun 18 is slidably connected in the sliding groove 17, a guide rod 19 is connected in the sliding groove 17, and one end of the laser welding gun 18 is slidably sleeved on the guide rod 19, the sliding groove 17 provides an accurate sliding track for the laser welding gun 18, ensuring that it can move stably at the bottom of the turntable 15, and the guide rod 19 further enhances the stability and accuracy of the sliding of the laser welding gun 18, which is slidably sleeved with one end of the laser welding gun 18, preventing the welding gun from deviating or shaking during movement.

[0033] The second air cylinder 20 is arranged in the turntable 15, and the piston rod of the second air cylinder 20 is connected with the laser welding gun 18.

[0034] The top of the support frame 2 is equipped with a third cylinder 21, and the piston rod of the third cylinder 21 is connected to the crossbar 3. The piston rod of the third cylinder 21 can drive the crossbar 3 to slide up and down inside the support frame 2, so that the crossbar 3 is adjusted to a suitable vertical position.

[0035] This welding fixture for irregularly shaped workpieces allows the operator to place the workpiece on the processing table 4 and then control the first cylinder 13 to start via the intelligent controller (not shown in the attached diagram) on the base 1. The piston rod of the first cylinder 13 extends or retracts, pushing the guide block 11 to slide within the opening 12 of the processing table 4. This, in turn, causes the first clamping block 5 to move closer to or further away from the second clamping block 6. When the first clamping block 5 approaches the workpiece, the convex pad 10 at the end of the fixing rod 8 contacts the workpiece surface. The elastic force of the spring 9 causes the fixing rod 8 to move into the sleeve 7 to adaptively adjust its position, ensuring that the convex pad 10 is in close contact with the workpiece surface. Thus, by the simultaneous action of multiple fixing points on the first clamping block 5 and the second clamping block 6, the irregularly shaped workpiece can be stably clamped.

[0036] After the irregularly shaped workpiece is stably clamped, the intelligent controller sends a command to the third cylinder 21. The piston rod of the third cylinder 21 drives the crossbar 3 to slide up and down in the stand 2, adjusting the crossbar 3 to a suitable vertical position. Then, the intelligent controller starts the motor 16. The output shaft of the motor 16 drives the turntable 15 to rotate. The angle sensor at the bottom of the turntable 15 (not shown in the figure) monitors the rotation angle of the turntable 15 in real time and feeds the data back to the intelligent controller, so that the turntable 15 rotates to the specified angle, thereby adjusting the angle of the laser welding gun 18 so that it is aligned with the welding part of the irregularly shaped workpiece. At the same time, the operator can control the second cylinder 20 to start according to the angle of the turntable 15 through the intelligent controller. The piston rod of the second cylinder 20 pushes the laser welding gun 18 to slide along the guide rod 19 in the slide groove 17, realizing the fine adjustment of the laser welding gun 18 in the horizontal direction, ensuring that the distance and angle between the welding gun and the workpiece welding point are correct.

[0037] Then, the laser welding gun 18 is controlled by the intelligent controller to perform welding operations. After welding is completed, the intelligent controller controls the laser welding gun 18 to be turned off. It first sends a control command to the second cylinder 20 to make the laser welding gun 18 return to the initial position, and then sends a command to the third cylinder 21 to raise the crossbar 3 to avoid the welding gun from colliding with the workpiece. Then, it sends a command to the first cylinder 13 to make the first clamping block 5 move away from the second clamping block 6, releasing the clamp on the irregular workpiece. The operator can then take out the welded workpiece and complete the entire welding process.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A welding fixture for irregularly shaped workpieces, characterized in that, include: A base (1) is connected to a support frame (2) at one end of its top, and a crossbar (3) is slidably connected inside the support frame (2); A processing table (4) is connected to the center of the top of the base (1) and is used to weld irregular workpieces. The top of the processing table (4) is provided with a fixing component for clamping and fixing irregular workpieces during welding. The fixing component includes a first clamping block (5) and a second clamping block (6). The first clamping block (5) is slidably connected to the top of the processing table (4), and the second clamping block (6) is connected to the top of the processing table (4). Several sleeves (7) are connected inside the first clamping block (5) and the second clamping block (6), and a fixing rod (8) is slidably connected inside the sleeves (7).

2. The welding fixture for irregularly shaped workpieces according to claim 1, characterized in that: A spring (9) is connected inside the sleeve (7), and one end of the spring (9) is connected to the fixing rod (8).

3. The welding fixture for irregularly shaped workpieces according to claim 1, characterized in that: The fixed rod (8) is connected to a convex pad (10) at one end outside the sleeve (7), and the bottom of the first clamping block (5) is connected to a guide block (11), and one end of the guide block (11) slides through the opening (12) in the middle of the processing table (4).

4. The welding fixture for irregularly shaped workpieces according to claim 3, characterized in that: The processing table (4) is provided with a first cylinder (13) at one end, and the piston rod of the first cylinder (13) moves through the processing table (4) and is connected to the guide block (11). The guide block (11) is rotatably connected to a roller (14) at one end inside the processing table (4).

5. The welding fixture for irregularly shaped workpieces according to claim 1, characterized in that: The bottom of the crossbar (3) is rotatably connected to a turntable (15) via a bearing, and the top of the crossbar (3) is equipped with a motor (16), and the output shaft of the motor (16) rotates through the crossbar (3) and connects to the turntable (15).

6. The welding fixture for irregularly shaped workpieces according to claim 5, characterized in that: The turntable (15) has a groove (17) at the center of its bottom, and a laser welding gun (18) is slidably connected in the groove (17). A guide rod (19) is connected in the groove (17), and one end of the laser welding gun (18) is slidably fitted onto the guide rod (19).

7. The welding fixture for irregularly shaped workpieces according to claim 6, characterized in that: The turntable (15) is equipped with a second cylinder (20), and the piston rod of the second cylinder (20) is connected to the laser welding gun (18).

8. The welding fixture for irregularly shaped workpieces according to claim 1, characterized in that: The top of the support frame (2) is provided with a third cylinder (21), and the piston rod of the third cylinder (21) is connected to the crossbar (3).

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