Angle self-adjusting workpiece clamping device for welding and clamping method of angle self-adjusting workpiece clamping device

Abstract

The invention discloses an angle self-adjusting workpiece clamping device for welding and a clamping method of the angle self-adjusting workpiece clamping device, and belongs to the technical field of welding clamp equipment accessory devices. The device comprises a chassis and a clamping device, the clamping device comprises an adjusting device, rotating mechanisms, a twisting device, a swinging device and a clamping mechanism, a shaft hole is formed in the middle of the adjusting device, the center of the chassis penetrates through the shaft hole and is rotationally connected with the adjusting device, and the connecting ends of the two rotating mechanisms are rotationally connected with the two connecting ends of the adjusting device correspondingly. Sliding grooves are formed in the rotating mechanisms, the two twisting devices penetrate through the corresponding sliding grooves and then are in sliding connection with the two rotating mechanisms correspondingly, the connecting ends of the two swinging devices are rotationally connected with the connecting ends of the two twisting devices correspondingly, and the two clamping mechanisms are rotationally connected to the two swinging devices correspondingly. Through rotation and torsion of the connecting rod, a workpiece can be driven to be subjected to large-distance torsion, so that the clamping flexibility of the workpiece is improved, and the working efficiency of equipment is improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding fixture equipment attachments, and in particular to a workpiece clamping device for angle self-adjusting welding and a clamping method thereof. Background Art

[0002] In welding operations, the use of welding fixtures is crucial. They can ensure the accurate positioning and stable clamping of the workpiece, thereby improving the welding quality and efficiency. According to the shape and size of the workpiece, select the appropriate quick clamp, place the workpiece on the clamp, and use the clamping mechanism of the quick clamp to clamp the workpiece for welding to ensure that the workpiece remains stable during welding. The most common quick clamp currently available is the automatic lifting welding fixture. The automatic lifting welding fixture is a device used to clamp and weld the workpiece in the industrial production process. It has been widely used in the field of workpiece welding. When using the existing automatic lifting welding fixture, first insert the two workpieces to be welded from both sides of the fixture assembly, that is, insert them from both sides of the mouth-shaped assembly frame, so that they are located between the corresponding two chuck blocks, ensure that the butt joint is located above the welding position connecting plate, start the power motor, and drive the lifting drive shaft to rotate through the engagement of the bevel gear 1. Sprocket 1 and chain 1 make the two lifting drive shafts rotate synchronously, so that the threaded section drives the corresponding two lifting slides to approach each other. This will drive the bottoming block and the chuck block to slide along the lifting slide until the rubber pad contacts the welding workpiece, and adjust the inclination angle of the workpiece clamp according to the needs of the welding workpiece. By rotating the lifting screw and utilizing sprocket two and chain two to drive synchronously, the lifting screw drives the lifting slide bar to slide along the rectangular opening, thereby changing the position of the inserted rod, causing the workpiece clamp to rotate around the rotating support shaft to adjust the inclination angle of the workpiece clamp; it is found in the use of existing automatic lifting welding fixtures that although the fixture can adapt to changes in workpiece size within a certain range, customized adjustments may still be required for workpieces of special shapes or non-standard sizes, resulting in lower flexibility of the equipment and thus lower working efficiency of the equipment. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides an angle self-adjusting welding workpiece clamping device which can drive the workpiece to twist over a large distance through the rotation and twisting of a connecting rod, thereby improving the flexibility of workpiece clamping and thus improving the working efficiency of the equipment.

[0004] The technical solution adopted by the present invention is: a workpiece clamping device for self-adjusting welding at an angle, comprising a chassis 1 and a clamping device, the clamping device being evenly installed on the chassis 1, and characterized in that the clamping device comprises an adjusting device, a rotating mechanism, a torsion device, a swinging device and a clamping mechanism, an axial hole 201 is arranged in the middle of the adjusting device, the center of the chassis 1 passes through the axial hole 201 and is rotatably connected with the adjusting device, the connecting ends of the two groups of rotating mechanisms are respectively rotatably connected with the two groups of connecting ends of the adjusting device, a slide groove 202 is arranged on the rotating mechanism, the two groups of torsion devices pass through the corresponding slide grooves 202 and are respectively slidably connected with the two groups of rotating mechanisms, the connecting ends of the two groups of swinging devices are respectively rotatably connected with the connecting ends of the two groups of torsion devices, and the two groups of clamping mechanisms are respectively rotatably connected to the two groups of swinging devices.

[0005] Specifically, the adjustment device also includes a bottom adjustment disk 301, a top adjustment disk 302, a positioning rod 303, a base 304, a first motor 305, a driving wheel 306 and an end cover 307. Two groups of positioning grooves 308 are provided on the chassis 1. The two groups of positioning rods 303 pass through the positioning grooves 308 and are slidably connected to the chassis 1. The top adjustment disk 302 and the bottom adjustment disk 301 are both provided with positioning screw holes 309. The two groups of positioning rods 303 pass through the corresponding positioning screw holes 309 and are respectively connected to the top adjustment disk 302 and the bottom adjustment disk 301. 01 threaded connection, an arc-shaped rack 310 is provided on the bottom adjustment disk 301, the connecting end of the base 304 is rotatably connected to the bottom end of the top adjustment disk 302, an organic hole 311 is provided on the base 304, the connecting end of the first motor 305 is fixedly connected to the connecting end of the base 304, the output end of the first motor 305 passes through the organic hole 311 and is rotatably connected to the connecting end of the driving wheel 306, the output end of the driving wheel 306 is meshed with the output end of the arc-shaped rack 310, and the connecting end of the end cover 307 is fixedly connected to the top of the chassis 1.

[0006] Specifically, the rotating mechanism also includes a support 401, a first motor 402 and a rotating shaft 403. The connecting ends of the two groups of supports 401 are rotatably connected to the connecting ends of the top adjustment disk 302 and the bottom adjustment disk 301 respectively. The connecting ends of the two groups of rotating shafts 403 are rotatably connected to the connecting ends of the corresponding supports 401 respectively. The connecting ends of the two groups of first motors 402 are rotatably connected to the connecting ends of the corresponding rotating shafts 403 respectively. Through holes 404 are provided on the two groups of rotating shafts 403. The output ends of the two groups of first motors 402 are respectively passed through the corresponding through holes 404 and fixedly connected to the connecting ends of the corresponding supports 401.

[0007] Specifically, the torsion device includes a slider 501, a spherical rod 502, a first electric push rod 503 and a rotating rod 504. The four groups of sliders 501 respectively pass through the corresponding sliding grooves 202 and are slidably connected to the corresponding rotating shafts 403. The connecting end of the rotating rod 504 is rotatably connected to the connecting end of the rotating shaft 403. Spherical holes 505 are provided on the sliders 501 and the rotating rod 504. The four groups of spherical rods 502 respectively pass through the corresponding spherical holes 505 and are rotatably connected to the corresponding sliders 501 and the rotating rod 504. Grooves 506 are provided on the two groups of rotating shafts 403. The four groups of first electric push rods 503 respectively pass through the corresponding grooves 506 and are fixedly mounted on the corresponding rotating shafts 403. The output ends of the four groups of first electric push rods 503 are respectively fixedly connected to the connecting ends of the corresponding sliders 501.

[0008] Specifically, the swing device also includes a second electric push rod 601, an arc rod 602, a support arm 603, a telescopic rod 604, a second motor 605 and a one-way screw 606. The connecting ends of the two groups of second electric push rods 601 are respectively rotatably connected to the connecting ends of the corresponding rotating rods 504. The two groups of rotating rods 504 are both provided with a first capstan 608. The two groups of support arms 603 are respectively passed through the corresponding first capstan 608 and are rotatably connected to the corresponding rotating rods 504. The two groups of arc rods 602 are both provided with a second capstan 611. The output ends of the corresponding support arms 603 and the second electric push rods 601 are respectively passed through the corresponding second capstan 611 and are connected to the corresponding arc rods 60 2 rotation connection, the two groups of support arms 603 are both provided with T-slots 609, the two groups of telescopic rods 604 pass through the corresponding T-slots 609 and are slidably connected with the corresponding support arms 603, the two groups of telescopic rods 604 are both provided with threaded holes 610, the two groups of one-way screw rods 606 pass through the corresponding threaded holes 610 and are threadedly connected with the corresponding telescopic rods 604, the two groups of support arms 603 are both equipped with bases 607, the connection ends of the two groups of second motors 605 are respectively fixedly connected with the connection ends of the corresponding bases 607, and the output ends of the two groups of second motors 605 pass through the corresponding bases 607 and are rotationally connected with the connection ends of the corresponding one-way screw rods 606.

[0009] Specifically, the clamping mechanism also includes a chuck 701, a clamp 702, a bidirectional screw 703, a third motor 704, a fourth motor 705, a driving gear 706, a driven gear 707, a clamp block 708 and a knob 709. The connecting end of the chuck 701 is fixedly connected to the connecting end of the telescopic rod 604, and the driven gears 707 are respectively fixedly mounted on the corresponding telescopic rods 604. A mounting seat 710 is provided on the chuck 701. The connecting end of the third motor 704 is fixedly connected to the connecting end of the corresponding mounting seat 710. The output end of the third motor 704 passes through the corresponding mounting seat 710 and is rotatably connected to the connecting end of the corresponding driving gear 706. The output end of the driving gear 706 is respectively meshed with the output end of the corresponding driven gear 707. Installation slot 711, the bidirectional screw rod 703 passes through the corresponding installation slot 711 and is rotatably connected to the corresponding chuck 701, the connecting ends of the fourth motor 705 are rotatably connected to the connecting ends of the corresponding chuck 701, the output ends of the fourth motor 705 pass through the corresponding installation slot 711 and are rotatably connected to the connecting ends of the corresponding bidirectional screw rod 703, the four groups of clamping blocks 708 are all provided with through holes 712, the output ends of the bidirectional screw rod 703 pass through the corresponding through holes 712 and are threadedly connected to the corresponding clamping blocks 708, the clamps 702 are rotatably connected to the corresponding clamping blocks 708, the clamping blocks 708 and the corresponding clamps 702 are both provided with rotating holes 713, and the rotating knobs 709 pass through the corresponding rotating holes 713 and are threadedly connected to the corresponding clamps 702 and the clamping blocks 708.

[0010] A method for clamping a workpiece for angle self-adjusting welding, using the aforementioned workpiece clamping device for angle self-adjusting welding, comprises the following steps: S1: The angle is adjusted by rotating the clamp 702 of the clamping mechanism, and the knob 709 is turned to loosen the clamp 702 on the clamp block 708. The clamp 702 is bent to adjust the angle. The clamp 702 presents a toothed clamping shape, and different workpieces are tightly clamped. After the adjustment is completed, the knob 709 is turned to fix it, and the third motor 704 is started to drive the driving gear 706 to rotate. Through the meshing relationship between the driving gear 706 and the driven gear 707, the chuck 701 can be driven to rotate as a whole, and the workpiece being clamped can be rotated and adjusted. The fourth motor 705 is started to drive the bidirectional screw 703 to rotate, and the clamp block 708 is driven to rotate on the chuck 701, and the two sides of the workpiece are clamped by rotation; S2: Start the adjusting device to rotate, by rotating the bottom adjusting disk 301, cooperate with the first motor 305 on the starting base 1, drive the driving wheel 306 to roll on the arc-shaped rack 310, drive the top adjusting disk 302 to slide, and make it rotate around the shaft hole 201. After adjustment, the overall position of the support arm 603 and the clamp 702 can be adjusted, and the positioning rod 303 is rotated to lift and fix in the positioning groove 308, so that the support position and angle between the two sets of rotating rods 504 are changed, and the clamping angle of the workpiece is changed, and the workpiece is driven to rotate by starting the rotating mechanism, and the twisting device is started. The rotating rod 504 is rotated by the length and direction of the slider 501 extending in the slide groove 202, so that the workpiece is further twisted; S3: Start the swing device to adjust the angle of the support arm 603 so that the workpiece can be adjusted horizontally to facilitate welding after the workpiece is tilted.

[0011] Specifically, the specific steps of starting the rotating mechanism to drive the workpiece to rotate in step S2 are: S2.1: Start the first motor 402 to rotate, driving the rotating shaft 403 to rotate on the support 401. Since the rotating rod 504 is connected to the support 401, the rotating rod 504 is rotated in the opposite direction, so that the welding point of the workpiece rotates. S2.2: By adjusting the rotation of the welding point, the equipment can process non-linear welding operations such as arc welds and curved welds; Specifically, in step S2, the twisting device is started, and the rotating rod 504 is rotated by the length and direction of the slider 501 extending in the slide slot 202, so that the workpiece is further twisted. Specifically, the steps are as follows: S2.3: Start the first electric push rod 503 to extend and retract, so that it drives the slider 501 to slide in the slide groove 202. The slider 501 slides in the same direction and in the opposite direction, so that the spherical rod 502 connected to it swings; S2.4: The rotating rod 504 is pulled by the spherical rod 502, and the rotating rod 504 rotates under the pulling action, driving the angle of the supporting arm 603 to be adjusted; S2.5: With the rotation of the rotating shaft 403, the workpiece on the clamp is driven to twist, so as to perform welding work at an inclined bending angle; Specifically, the specific steps of S3 are: S3.1: The second electric push rod 601 is started to extend and retract, and the output end of the second electric push rod 601 slides downward, driving the arc rod 602 hinged thereto to slide accordingly. During the sliding process, the arc rod 602 rotates on the second electric push rod 601 and the support arm 603 as the angles with the second electric push rod 601 and the support arm 603 are different; S3.2: Start the second motor 605 to rotate, driving the one-way screw rod 606 connected thereto to rotate on the machine base 607, and driving the telescopic rod 604 to slide on the support arm 603 through the threaded connection relationship of the threaded hole, so as to adjust the length; S3.3: The support arms 603 of different lengths can be used to accommodate workpieces of different sizes. The support arms 603 can be adjusted at an angle to allow for flexible clamping, making it easier for the equipment to adjust its angle during processing.

[0012] Compared with the prior art, the present invention has the following beneficial effects: (1) During the clamping process, the present invention uses a torsion device in conjunction with a swing device to adjust the workpiece to multiple angles, thereby improving the flexibility of the equipment; (2) Manually fix the bottom adjustment plate and the top adjustment plate through the positioning rod to improve the overall stability of the equipment; (3) By turning the knob, the clamp is adjusted on the chuck so that it can adaptively clamp workpieces at different clamping angles, thereby improving the adjustment performance of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the connection structure between the top adjustment plate and the positioning rod of the present invention; Figure 3 It is a schematic diagram of the connection structure between the chassis and the end cover of the present invention; Figure 4 It is a schematic diagram of the connection structure of the rotating shaft and the rotating rod of the present invention; Figure 5 It is a schematic diagram of the connection structure of the arc rod and the support arm of the present invention.

[0014] Markings in the attached drawings: 1, chassis; 201, shaft hole; 202, slide groove; 301, bottom adjustment plate; 302, top adjustment plate; 303, positioning rod; 304, base; 305, first motor; 306, driving wheel; 307, end cover; 308, positioning groove; 309, positioning screw hole; 310, arc rack; 311, machine hole; 401, support; 402, first motor; 403, rotating shaft; 404, through hole; 501, slider; 502, spherical rod; 503, first electric push rod; 504, rotating rod; 505, spherical hole; 506, groove; 601, first Second electric push rod; 602, arc rod; 603, support arm; 604, telescopic rod; 605, second motor; 606, one-way screw; 607, machine base; 608, first capstan; 609, T-slot; 610, threaded hole; 611, second capstan; 701, chuck; 702, clamp; 703, two-way screw; 704, third motor; 705, fourth motor; 706, driving gear; 707, driven gear; 708, clamp block; 709, knob; 710, mounting seat; 711, mounting slot; 712, penetration hole; 713, rotating hole; 801, magnetic pad. DETAILED DESCRIPTION

[0015] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0016] Example 1: Figure 1-5 As shown, a workpiece clamping device for angle self-adjusting welding includes a chassis 1 and a clamping device, and the clamping device is evenly installed on the chassis 1. It is characterized in that the clamping device includes an adjusting device, a rotating mechanism, a torsion device, a swinging device and a clamping mechanism. An axial hole 201 is provided in the middle of the adjusting device. The center of the chassis 1 passes through the axial hole 201 and is rotatably connected to the adjusting device. The connecting ends of the two sets of rotating mechanisms are rotatably connected to the two sets of connecting ends of the adjusting device, such as Figure 1 As shown, two groups of rotating mechanisms are installed relatively to each other, and there are two groups of torsion devices, swing devices and clamping mechanisms. A slide groove 202 is provided on the rotating mechanism. After the two groups of torsion devices pass through the corresponding slide groove 202, they are respectively slidably connected with the two groups of rotating mechanisms. The connecting ends of the two groups of swing devices are respectively rotatably connected with the connecting ends of the two groups of torsion devices, and the two groups of clamping mechanisms are respectively rotatably connected to the two groups of swing devices.

[0017] Furthermore, the adjustment device also includes a bottom adjustment disk 301, a top adjustment disk 302, a positioning rod 303, a base 304, a first motor 305, a driving wheel 306 and an end cover 307. Two groups of positioning grooves 308 are provided on the chassis 1. The two groups of positioning rods 303 pass through the positioning grooves 308 and are slidably connected to the chassis 1. The top adjustment disk 302 and the bottom adjustment disk 301 are both provided with positioning screw holes 309. The two groups of positioning rods 303 pass through the corresponding positioning screw holes 309 and are respectively connected to the top adjustment disk 302 and the bottom adjustment disk 301. 01 threaded connection, an arc-shaped rack 310 is provided on the bottom adjustment disk 301, the connecting end of the base 304 is rotatably connected to the bottom end of the top adjustment disk 302, an organic hole 311 is provided on the base 304, the connecting end of the first motor 305 is fixedly connected to the connecting end of the base 304, the output end of the first motor 305 passes through the organic hole 311 and is rotatably connected to the connecting end of the driving wheel 306, the output end of the driving wheel 306 is meshed with the output end of the arc-shaped rack 310, and the connecting end of the end cover 307 is fixedly connected to the top of the chassis 1.

[0018] Furthermore, the rotating mechanism also includes a support 401, a first motor 402 and a rotating shaft 403. The connecting ends of the two groups of supports 401 are rotatably connected to the connecting ends of the top adjustment disk 302 and the bottom adjustment disk 301 respectively, the connecting ends of the two groups of rotating shafts 403 are rotatably connected to the corresponding connecting ends of the supports 401 respectively, the connecting ends of the two groups of first motors 402 are rotatably connected to the corresponding connecting ends of the rotating shafts 403 respectively, and through holes 404 are provided on the two groups of rotating shafts 403. The output ends of the two groups of first motors 402 respectively pass through the corresponding through holes 404 and are fixedly connected to the corresponding connecting ends of the supports 401.

[0019] Furthermore, the torsion device includes a slider 501, a spherical rod 502, a first electric push rod 503 and a rotating rod 504. The four groups of sliders 501 respectively pass through the corresponding slide grooves 202 and are slidably connected to the corresponding rotating shafts 403. The connecting end of the rotating rod 504 is rotatably connected to the connecting end of the rotating shaft 403. Spherical holes 505 are provided on the sliders 501 and the rotating rod 504. The four groups of spherical rods 502 respectively pass through the corresponding spherical holes 505 and are rotatably connected to the corresponding sliders 501 and the rotating rod 504. Grooves 506 are provided on the two groups of rotating shafts 403. The four groups of first electric push rods 503 respectively pass through the corresponding grooves 506 and are fixedly mounted on the corresponding rotating shafts 403. The output ends of the four groups of first electric push rods 503 are respectively fixedly connected to the connecting ends of the corresponding sliders 501.

[0020] Furthermore, the swing device also includes a second electric push rod 601, an arc rod 602, a support arm 603, a telescopic rod 604, a second motor 605 and a one-way screw 606. The connecting ends of the two sets of second electric push rods 601 are respectively rotatably connected to the connecting ends of the corresponding rotating rods 504. The two sets of rotating rods 504 are both provided with a first capstan 608. The two sets of support arms 603 are respectively passed through the corresponding first capstan 608 and are rotatably connected to the corresponding rotating rods 504. The two sets of arc rods 602 are both provided with a second capstan 611. The output ends of the corresponding support arms 603 and the second electric push rods 601 are respectively passed through the corresponding second capstan 611 and are connected to the corresponding arc rods 602. 02 rotational connection, both groups of support arms 603 are provided with T-slots 609, and both groups of telescopic rods 604 pass through the corresponding T-slots 609 and are slidably connected with the corresponding support arms 603, and both groups of telescopic rods 604 are provided with threaded holes 610, and both groups of one-way screw rods 606 pass through the corresponding threaded holes 610 and are threadedly connected with the corresponding telescopic rods 604, and both groups of support arms 603 are equipped with bases 607, and the connecting ends of the two groups of second motors 605 are fixedly connected with the connecting ends of the corresponding bases 607, and the output ends of the two groups of second motors 605 pass through the corresponding bases 607 and are rotationally connected with the connecting ends of the corresponding one-way screw rods 606.

[0021] Furthermore, the clamping mechanism also includes a chuck 701, a clamp 702, a bidirectional screw 703, a third motor 704, a fourth motor 705, a driving gear 706, a driven gear 707, a clamp block 708 and a knob 709. The connecting end of the chuck 701 is fixedly connected to the connecting end of the telescopic rod 604, and the driven gears 707 are respectively fixedly mounted on the corresponding telescopic rods 604. A mounting seat 710 is provided on the chuck 701. The connecting end of the third motor 704 is fixedly connected to the connecting end of the corresponding mounting seat 710. The output end of the third motor 704 passes through the corresponding mounting seat 710 and is rotatably connected to the connecting end of the corresponding driving gear 706. The output end of the driving gear 706 is respectively meshed with the output end of the corresponding driven gear 707. Installation slot 711, the bidirectional screw rod 703 passes through the corresponding installation slot 711 and is rotatably connected to the corresponding chuck 701, the connecting ends of the fourth motor 705 are rotatably connected to the connecting ends of the corresponding chuck 701, the output ends of the fourth motor 705 pass through the corresponding installation slot 711 and are rotatably connected to the connecting ends of the corresponding bidirectional screw rod 703, the four groups of clamping blocks 708 are all provided with through holes 712, the output ends of the bidirectional screw rod 703 pass through the corresponding through holes 712 and are threadedly connected to the corresponding clamping blocks 708, the clamps 702 are rotatably connected to the corresponding clamping blocks 708, the clamping blocks 708 and the corresponding clamps 702 are both provided with rotating holes 713, and the rotating knobs 709 pass through the corresponding rotating holes 713 and are threadedly connected to the corresponding clamps 702 and the clamping blocks 708.

[0022] Furthermore, it also includes a magnetic pad 801, and the connecting end of the magnetic pad 801 is connected to the bottom end of the chassis 1, so that the chassis 1 can be installed stably and will not move at will.

[0023] A method for clamping a workpiece for angle self-adjusting welding, using the aforementioned workpiece clamping device for angle self-adjusting welding, comprises the following steps: S1: The angle is adjusted by rotating the clamp 702 of the clamping mechanism, and the knob 709 is turned to loosen the clamp 702 on the clamp block 708. The clamp 702 is bent to adjust the angle. The clamp 702 presents a toothed clamping shape to tightly clamp different workpieces. After the adjustment is completed, the knob 709 is turned to fix it, and the third motor 704 is started to drive the driving gear 706 to rotate. Through the meshing relationship between the driving gear 706 and the driven gear 707, the chuck 701 can be driven to rotate as a whole, which is convenient for rotation adjustment of the clamped workpiece, so that the workpiece can be rotated and flipped in a parallel state of the support arm 603, so that it can adapt to the corners of different workpieces, so as to achieve adaptive clamping. In this process, the fourth motor 705 is started to drive the bidirectional screw 703 to rotate, and the clamp block 708 is driven to rotate on the chuck 701, and the two sides of the workpiece are clamped by rotation; S2: Start the adjusting device to rotate, by rotating the bottom adjusting disk 301, cooperate with the first motor 305 on the starting base 1, drive the driving wheel 306 to roll on the arc-shaped rack 310, drive the top adjusting disk 302 to slide, and make it rotate around the shaft hole 201. After adjustment, the overall position of the support arm 603 and the clamp 702 can be adjusted, and the positioning rod 303 is rotated to lift and fix in the positioning groove 308, so that the support position and angle between the two sets of rotating rods 504 are changed, and the clamping angle of the workpiece is changed, and the workpiece is driven to rotate by starting the rotating mechanism. In this process, the twisting device is started, and the rotating rod 504 is rotated by the length and direction of the slider 501 extending in the slide groove 202, so that the workpiece is further twisted; S3: Start the swing device to adjust the angle of the support arm 603 so that the workpiece can be adjusted horizontally to facilitate welding after the workpiece is tilted.

[0024] Furthermore, the specific steps of starting the rotating mechanism to drive the workpiece to rotate in step S2 are: S2.1: Start the first motor 402 to rotate, driving the rotating shaft 403 to rotate on the support 401. Since the rotating rod 504 is connected to the support 401, the rotating rod 504 is rotated in the opposite direction, so that the welding point of the workpiece rotates. S2.2: By adjusting the rotation of the welding point, the equipment can process non-linear welding operations such as arc welds and curved welds.

[0025] Furthermore, in step S2, the twisting device is started, and the rotating rod 504 is rotated by the length and direction of the slider 501 extending in the slide groove 202, so that the workpiece is further twisted. The specific steps are: S2.3: Start the first electric push rod 503 to extend and retract, so that it drives the slider 501 to slide in the slide groove 202. The slider 501 slides in the same direction and in the opposite direction, so that the spherical rod 502 connected to it swings; S2.4: The rotating rod 504 is pulled by the spherical rod 502, and the rotating rod 504 rotates under the pulling action, driving the angle of the supporting arm 603 to be adjusted; S2.5: In coordination with the rotation of the rotating shaft 403, the workpiece on the clamp is driven to twist, so as to perform welding work at an inclined bending angle.

[0026] Furthermore, the specific steps of S3 are: S3.1: The second electric push rod 601 is started to extend and retract, and the output end of the second electric push rod 601 slides downward, driving the arc rod 602 hinged thereto to slide accordingly. During the sliding process, the arc rod 602 rotates on the second electric push rod 601 and the support arm 603 as the angles with the second electric push rod 601 and the support arm 603 are different; S3.2: Start the second motor 605 to rotate, driving the one-way screw rod 606 connected thereto to rotate on the machine base 607, and driving the telescopic rod 604 to slide on the support arm 603 through the threaded connection relationship of the threaded hole, so as to adjust the length; S3.3: The support arms 603 of different lengths can be used to accommodate workpieces of different sizes. The support arms 603 can be adjusted at an angle to allow for flexible clamping, making it easier for the equipment to adjust its angle during processing.

[0027] The present invention can drive the workpiece to twist over a large distance through the rotation and twisting of the clamping device, thereby improving the flexibility of workpiece clamping and thus improving the working efficiency of the equipment.

[0028] The terms “vertical”, “horizontal”, “left”, “right” and the like are used herein for illustrative purposes only.

[0029] The “first”, “second” and “third” in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A workpiece clamping device for angle self-adjusting welding, comprising a chassis (1) and a clamping device, wherein the clamping device is evenly mounted on the chassis (1), and is characterized in that: The clamping device comprises an adjusting device, a rotating mechanism, a twisting device, a swinging device and a clamping mechanism, wherein an axial hole (201) is arranged in the middle of the adjusting device, the center of the chassis (1) passes through the axial hole (201) and is rotationally connected to the adjusting device, the connecting ends of the two groups of rotating mechanisms are rotationally connected to the two groups of connecting ends of the adjusting device respectively, a sliding groove (202) is arranged on the rotating mechanism, the two groups of twisting devices pass through the corresponding sliding grooves (202) and are slidingly connected to the two groups of rotating mechanisms respectively, the connecting ends of the two groups of swinging devices are rotationally connected to the connecting ends of the two groups of twisting devices respectively, and the two groups of clamping mechanisms are rotationally connected to the two groups of swinging devices respectively.

2. The workpiece clamping device for angle self-adjusting welding according to claim 1, characterized in that: The adjusting device further comprises a bottom adjusting disk (301), a top adjusting disk (302), a positioning rod (303), a base (304), a first motor (305), a driving wheel (306) and an end cover (307); two groups of positioning grooves (308) are provided on the base (1); the two groups of positioning rods (303) pass through the positioning grooves (308) and are slidably connected to the base (1); positioning screw holes (309) are provided on the top adjusting disk (302) and the bottom adjusting disk (301); the two groups of positioning rods (303) pass through corresponding positioning screw holes (309) and are connected to the top adjusting disk (302) and the bottom adjusting disk (301) respectively. The bottom adjusting disk (301) is threadedly connected, an arc-shaped rack (310) is provided on the bottom adjusting disk (301), the connecting end of the base (304) is rotatably connected to the bottom end of the top adjusting disk (302), the base (304) is provided with a machine hole (311), the connecting end of the first motor (305) is fixedly connected to the connecting end of the base (304), the output end of the first motor (305) passes through the machine hole (311) and is rotatably connected to the connecting end of the driving wheel (306), the output end of the driving wheel (306) is meshed with the output end of the arc-shaped rack (310), and the connecting end of the end cover (307) is fixedly connected to the top end of the chassis (1).

3. The workpiece clamping device for angle self-adjusting welding according to claim 2, characterized in that: The rotating mechanism further comprises a support (401), a first motor (402) and a rotating shaft (403); the connection ends of the two groups of supports (401) are respectively rotatably connected to the connection ends of the top adjustment disk (302) and the bottom adjustment disk (301); the connection ends of the two groups of rotating shafts (403) are respectively rotatably connected to the connection ends of the corresponding supports (401); the connection ends of the two groups of first motors (402) are respectively rotatably connected to the connection ends of the corresponding rotating shafts (403); through holes (404) are provided on the two groups of rotating shafts (403); and the output ends of the two groups of first motors (402) respectively pass through the corresponding through holes (404) and are fixedly connected to the connection ends of the corresponding supports (401).

4. The workpiece clamping device for angle self-adjusting welding according to claim 3, characterized in that: The torsion device comprises a slider (501), a spherical rod (502), a first electric push rod (503) and a rotating rod (504); the four sliders (501) respectively pass through the corresponding sliding grooves (202) and are slidably connected to the corresponding rotating shafts (403); the connecting end of the rotating rod (504) is rotatably connected to the connecting end of the rotating shaft (403); the slider (501) and the rotating rod (504) are both provided with spherical holes (505); the four spherical rods (502) respectively pass through the corresponding spherical holes (505) and are rotatably connected to the corresponding sliders (501) and the rotating rod (504); the two rotating shafts (403) are both provided with grooves (506); the four first electric push rods (503) respectively pass through the corresponding grooves (506) and are fixedly mounted on the corresponding rotating shafts (403); and the output ends of the four first electric push rods (503) are respectively fixedly connected to the connecting ends of the corresponding sliders (501).

5. The workpiece clamping device for angle self-adjusting welding according to claim 4, characterized in that: The swing device further comprises a second electric push rod (601), an arc-shaped rod (602), a support arm (603), a telescopic rod (604), a second motor (605) and a one-way screw rod (606); the connection ends of the two sets of second electric push rods (601) are respectively rotatably connected to the connection ends of the corresponding rotating rods (504); the two sets of rotating rods (504) are both provided with a first capstan (608); the two sets of support arms (603) are respectively passed through the corresponding first capstan (608) and are rotatably connected to the corresponding rotating rods (504); the two sets of arc-shaped rods (602) are both provided with a second capstan (611); the output ends of the corresponding support arms (603) and the second electric push rods (601) are respectively passed through the corresponding second capstan (611) and are connected to the corresponding arc-shaped rods (602) ) are rotatably connected, the two groups of support arms (603) are each provided with a T-slot (609), the two groups of telescopic rods (604) respectively pass through the corresponding T-slots (609) and are slidably connected to the corresponding support arms (603), the two groups of telescopic rods (604) are each provided with a threaded hole (610), the two groups of one-way screw rods (606) respectively pass through the corresponding threaded holes (610) and are threadedly connected to the corresponding telescopic rods (604), the two groups of support arms (603) are each provided with a base (607), the connection ends of the two groups of second motors (605) are respectively fixedly connected to the connection ends of the corresponding bases (607), and the output ends of the two groups of second motors (605) respectively pass through the corresponding bases (607) and are rotatably connected to the connection ends of the corresponding one-way screw rods (606).

6. The workpiece clamping device for angle self-adjusting welding according to claim 5, characterized in that: The clamping mechanism also includes a chuck (701), a clamp (702), a bidirectional screw (703), a third motor (704), a fourth motor (705), a driving gear (706), a driven gear (707), a clamp block (708) and a knob (709). The connecting end of the chuck (701) is fixedly connected to the connecting end of the telescopic rod (604). The driven gears (707) are respectively fixedly mounted on the corresponding telescopic rods (604). A mounting seat (710) is provided on the chuck (701). The connecting end of the third motor (704) is fixedly connected to the connecting end of the corresponding mounting seat (710). The output end of the third motor (704) passes through the corresponding mounting seat (710) and is rotatably connected to the connecting end of the corresponding driving gear (706). The output end of the driving gear (706) is respectively meshed with the output end of the corresponding driven gear (707). The chuck (701) is provided with a mounting seat (710). The four groups of clamping blocks (708) are provided with through holes (712), the output ends of the two-way screw rods (703) are respectively threaded through the corresponding through holes (712) and are connected to the corresponding clamping blocks (708), the clamps (702) are respectively threadedly connected to the corresponding clamping blocks (708), the clamping blocks (708) and the corresponding clamping blocks (702) are respectively threadedly provided with rotation holes (713), and the rotation knobs (709) are respectively threaded through the corresponding rotation holes (713) and are connected to the corresponding clamping blocks (702) and the clamping blocks (708).

7. A method for clamping a workpiece for angle self-adjusting welding, characterized in that: The workpiece clamping device for self-adjusting welding according to claim 6 comprises the following steps: S1: The angle is adjusted by rotating the clamp (702) of the clamping mechanism, the knob (709) is turned to loosen the clamp (702) on the clamp block (708), and the clamp (702) is moved to adjust the angle. After the adjustment is completed, the knob (709) is turned to fix it, and the third motor (704) is started to drive the driving gear (706) to rotate, and the chuck (701) is driven to rotate as a whole through the meshing relationship between the driving gear (706) and the driven gear (707), and the fourth motor (705) is started to drive the bidirectional screw (703) to rotate, and the clamp block (708) is driven to rotate on the chuck (701), and the two sides of the workpiece are clamped by rotation; S2: starting the adjustment device to rotate, by rotating the bottom adjustment disk (301), cooperating with the first motor (305) on the start base (1), driving the driving wheel (306) to roll on the arc-shaped rack (310), driving the top adjustment disk (302) to slide, and rotating it around the shaft hole (201). After adjustment, the overall position of the support arm (603) and the clamp (702) is adjusted, and the positioning rod (303) is rotated to lift and fix in the positioning groove (308), so that the support position and angle between the two sets of rotating rods (504) are changed, driving the clamping angle of the workpiece to change, and driving the workpiece to rotate by starting the rotating mechanism, and starting the twisting device, and rotating the rotating rod (504) according to the length and direction of the slider (501) extending in the slide groove (202), so that the workpiece is further twisted; S3: Start the swing device to adjust the angle of the support arm (603) so that it can make lateral adjustments to the workpiece.

8. A method for clamping a workpiece for angle self-adjusting welding according to claim 7, characterized in that: The specific steps of starting the rotating mechanism to drive the workpiece to rotate in step S2 are: S2.1: starting the first motor (402) to rotate, driving the rotating shaft (403) to rotate on the support (401); since the rotating rod (504) is connected to the support (401), the rotating rod (504) is rotated in the opposite direction, so that the welding point of the workpiece rotates; S2.2: By adjusting the rotation of the welding point, the equipment can process non-linear welding operations such as arc welds and curved welds.

9. A workpiece clamping method for angle self-adjusting welding according to claim 7, characterized in that: The specific steps of starting the twisting device in step S2, rotating the rotating rod (504) by the length and direction of the slider (501) extending in the slide groove (202), and further twisting the workpiece are as follows: S2.3: The first electric push rod (503) is activated to extend and retract, so that the first electric push rod (503) drives the slider (501) to slide in the slide groove (202). The slider (501) slides in the same direction and in the opposite direction, so that the spherical rod (502) connected to the slider is swung; S2.4: The rotating rod (504) is pulled by the spherical rod (502), and the rotating rod (504) rotates under the action of the pulling, driving the angle of the supporting arm (603) to be adjusted; S2.5: The workpiece on the clamp is driven to twist by the rotation of the rotating shaft (403), so as to perform welding work at an inclined bending angle.

10. The method for clamping a workpiece for angle self-adjusting welding according to claim 7, wherein the specific steps of S3 are: S3.1: The second electric push rod (601) is started to extend and retract, and the output end of the second electric push rod (601) slides downward, driving the arc-shaped rod (602) hinged thereto to slide accordingly. During the sliding process, the arc-shaped rod (602) rotates on the second electric push rod (601) and the support arm (603) as the angles with the second electric push rod (601) and the support arm (603) change; S3.2: The second motor (605) is started to rotate, driving the one-way screw (606) connected thereto to rotate on the machine base (607), and the telescopic rod (604) is driven to slide on the support arm (603) through the threaded connection relationship of the threaded hole, so as to adjust the length; S3.3: The support arms (603) of different lengths can be used to accommodate workpieces of different sizes, and the angle of the support arms (603) can be adjusted.

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