A welding device and positioning fixture

Abstract

The application provides a welding device and a positioning clamp. The positioning clamp comprises movable tables, the top of each movable table is provided with a top plate; the number of the movable tables is two, the two movable tables are fixedly installed on the bottom of a partition plate on both sides respectively, and each top plate of the two movable tables is provided with a clamping assembly; the output end of a rotary driving mechanism is connected with the bottom center of the partition plate; a material guiding inclined plate is fixedly installed on the top plate of the movable table, and the top surface height of the material guiding inclined plate gradually decreases in the direction away from the partition plate; a knocking mechanism is used for knocking the material guiding inclined plate, the bottom surface of the material guiding inclined plate and the top surface of the top plate of the movable table enclose a partition cavity, and the knocking mechanism is arranged in the partition cavity. The welding device comprises a welding part; the welding part is arranged on one side of the positioning clamp; the welding part comprises a mechanical arm and a welding gun installed at the end of the mechanical arm. Through the alternate use of the two clamping assemblies, the welding efficiency is improved; through the arrangement of the material guiding inclined plate and the knocking mechanism, the debris on the table top is automatically removed.

Description

Technical Field

[0001] This invention relates to the field of welding, and in particular to a welding apparatus and a positioning fixture. Background Technology

[0002] Positioning fixtures in welding equipment are used to fix and position workpieces during the welding process, and are core equipment to ensure welding accuracy and efficiency.

[0003] However, most welding equipment still uses the traditional single-station fixed fixture design. Each time the workpiece is changed, the welding process must be interrupted for manual disassembly and reassembly. This reduces the overall production efficiency, especially when processing in large batches. Furthermore, the welding process generates debris, which usually falls directly onto the workbench and requires regular manual cleaning, increasing the workload of the workers. Summary of the Invention

[0004] To address the technical problems of low welding efficiency and lack of automatic removal of debris from the welding table, this invention provides a welding device and a positioning fixture.

[0005] The present invention solves the above-mentioned technical problems through the following technical solutions:

[0006] This invention provides a positioning fixture, including a movable platform with a top plate on its top; it also includes: a partition, two movable platforms fixedly mounted to the bottom sides of the partition, each with a clamping assembly on its top plate; a rotary drive mechanism with its output end connected to the bottom center of the partition; a guide ramp fixedly mounted to the top plate of the movable platform, the top surface height of which gradually decreases away from the partition; and a striking mechanism for striking the guide ramp, the bottom surface of which, together with the top surface of the movable platform, forms a cavity, the striking mechanism being disposed within the cavity.

[0007] Preferably, the clamping assembly includes a first clamping part and a second clamping part; the first clamping part and the second clamping part are respectively used to clamp two workpieces to be welded.

[0008] Preferably, the rotary drive mechanism includes a housing and a base plate; the housing is fixedly mounted on the base plate, a second rotating shaft is rotatably mounted inside the housing, a motor is fixedly mounted on the top surface of the base plate, a second gear is fixedly mounted on the output shaft end of the motor, a first gear is fixedly mounted on the second rotating shaft, the first gear and the second gear are meshed and connected, and the top end of the second rotating shaft is fixedly connected to the bottom center of the partition.

[0009] Preferably, a circular swashplate is fixedly sleeved on the portion of the second rotating shaft located inside the housing; the bottom surface of the circular swashplate is connected to a lubrication assembly that provides lubrication for the meshing of the first gear and the second gear, and a vertical movement mechanism for driving the striking mechanism.

[0010] Preferably, the lubrication assembly includes two sets of injection cylinders; the two sets of injection cylinders are respectively disposed on both sides of the bottom of the circular swashplate, each injection cylinder including a cylinder body; the bottom of the cylinder body is fixed to the top surface of the base plate, a piston is fitted inside the cylinder body, and the bottom surface of the piston and the inner wall of the cylinder body form a cavity, a second spring is disposed inside the cavity, and the two ends of the second spring abut against the bottom surface of the piston and the bottom inner wall of the cylinder body respectively, a vertical rod is fixedly installed on the top of the piston, the vertical rod passes through a hole opened on the top of the cylinder body, and the top end of the vertical rod is provided with a spherical surface, the spherical surface of the vertical rod abuts against the bottom surface of the circular swashplate, a first one-way valve and a second one-way valve are installed at the bottom of the cylinder body, the first one-way valve is connected to an oil inlet pipe, an oil tank is fixedly installed at the bottom of the base plate, the oil inlet pipe extends into the oil tank, the second one-way valve is connected to an oil outlet pipe, a nozzle is disposed on the oil outlet pipe, and the nozzle is located above the meshing point of the first gear and the second gear.

[0011] Preferably, an oil receiving cover is provided below the meshing point of the first gear and the second gear; the bottom of the oil receiving cover is fixedly connected to a return pipe, the return pipe is fixed to the base plate, and the bottom end of the return pipe is connected to the top of the oil tank.

[0012] Preferably, the striking mechanism includes a third rotating shaft rotatably mounted in the cavity, a third gear and a cam are fixedly sleeved on the third rotating shaft, a rack is meshed on one side of the third gear, and the bottom of the rack is connected to the vertical movement mechanism.

[0013] Preferably, the vertical movement mechanism includes a rotating connecting part; the top and bottom of the rotating connecting part are respectively connected to a connecting rod and a movable rod; the connecting rod is slidably sleeved with a guide hole opened on the top plate, the top end of the connecting rod is fixed to the bottom of the rack, the movable rod is slidably sleeved with a through hole opened on the top of the outer shell, and the bottom end of the movable rod is provided with a bent part, the bent part of the movable rod extends to the bottom of one side of the circular swashplate, a concave hole is opened on the bent part of the movable rod, a ball is provided in the concave hole, and the ball abuts against the bottom surface of one side of the circular swashplate; the bottom of the movable rod is elastically connected to a base fixed on the inner wall of the outer shell through a first spring.

[0014] Preferably, the rotating connection includes an outer ring and an inner ring; the outer ring is provided with an annular groove, the inner ring is embedded in the annular groove, the cross-section of the inner ring and the annular groove are both convex, the top surface of the inner ring is fixed to the bottom end of the connecting rod, and the bottom surface of the outer ring is fixed to the top end of the movable rod.

[0015] The present invention also provides a welding apparatus, the welding apparatus comprising:

[0016] A positioning fixture, as described in the above technical solution;

[0017] At least one welded part is disposed on one side of the positioning fixture;

[0018] The welding section includes a robotic arm and a welding torch mounted to the end of the robotic arm.

[0019] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0020] The positive and progressive effects of this invention are as follows:

[0021] The aforementioned welding device and positioning fixture, through the configuration of two sets of movable tables, each set with its own clamping assembly and a rotary drive mechanism, allows for the switching of the two sets of clamping assemblies between welding positions. When one set of clamping assemblies is performing welding operations, the other set of idle clamping assemblies is completely isolated from the welding area by a partition, forming an independent operating space. At this time, the operator can simultaneously complete the disassembly and clamping of the workpiece, enabling welding and loading processes to be performed concurrently, thereby improving welding efficiency in mass production. Furthermore, a guide ramp is provided; its inclined design facilitates the sliding of debris falling onto the table surface. A striking mechanism is also included, which strikes the guide ramp to cause vibration, further facilitating the sliding of debris for automatic debris removal. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the welding device of the present invention.

[0023] Figure 2 This is a schematic diagram of the structure of the clamping assembly and the movable platform of the present invention.

[0024] Figure 3 This is a schematic diagram of the structure of the second clamping part of the present invention.

[0025] Figure 4 This is a schematic diagram of the material guiding inclined plate and through groove of the present invention.

[0026] Figure 5 This is a schematic diagram of the structure of the movable platform, partition, and rotary drive mechanism of the present invention.

[0027] Figure 6 For the present invention Figure 5 Enlarged structural diagram of section A in the middle.

[0028] Figure 7 This is a schematic diagram of the internal structure of the outer shell of the present invention with the circular swashplate in a state where the left side is lower than the right side.

[0029] Figure 8 This is a schematic diagram of the internal structure of the outer shell of the present invention with the circular swashplate in a state where the left side is higher than the right side.

[0030] Figure 9 This is a schematic diagram of the structure of the connecting rod and the rotating connection part of the present invention.

[0031] Figure 10 For the present invention Figure 9 Enlarged structural diagram of section B in the middle.

[0032] Explanation of reference numerals in the attached figures

[0033] 1. Movable platform; 101. Casters; 102. Top plate; 103. Guide hole; 2. Partition; 3. Clamping assembly; 301. First carrier; 302. First fixed clamp; 303. First cylinder; 304. First movable clamp; 305. First positioning pin; 306. Second carrier; 307. Support base; 308. Second positioning pin; 309. Tilting frame; 310. Fixed frame; 311. Third carrier; 312. Second cylinder; 313. First rotating shaft; 314. Second movable clamp; 315. Second fixed clamp; 4. Guide inclined plate; 401. Through groove; 5. Wedge strip; 6. Robotic arm; 7. Welding torch; 8. Rotary drive mechanism; 801. Outer shell; 802. Base plate; 803. Second rotating shaft; 804. 805. Gear; 806. Motor; 807. Second gear; 9. Vertical movement mechanism; 901. Outer ring; 902. Inner ring; 903. Movable rod; 904. Ball bearing; 905. First spring; 906. Base; 907. Connecting rod; 10. Circular swashplate; 11. Lubrication assembly; 1101. Cylinder; 1102. Second spring; 1103. Piston; 1104. Vertical rod; 1105. First check valve; 1106. Second check valve; 1107. Oil inlet pipe; 1108. Oil outlet pipe; 1109. Nozzle; 1110. Oil tank; 12. Oil receiving cover; 1201. Return pipe; 13. Chamber; 14. Striking mechanism; 1401. Rack; 1402. Third rotating shaft; 1403. Third gear; 1404. Cam. Detailed Implementation

[0034] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0035] like Figure 1-10 As shown, a positioning fixture includes a movable platform 1, the top of which is provided with a top plate 102; it also includes:

[0036] The partition 2 has two movable platforms 1, and the two movable platforms 1 are fixedly installed on the bottom sides of the partition 2 respectively. The top plates 102 of the two movable platforms 1 are each provided with a clamping assembly 3.

[0037] A rotary drive mechanism 8, the output end of which is connected to the bottom center of the partition 2;

[0038] The guide plate 4 is fixedly installed on the top plate 102 of the movable table 1, and the height of the top surface of the guide plate 4 gradually decreases along the direction away from the partition plate 2.

[0039] A striking mechanism 14 is used to strike the guide plate 4. The bottom surface of the guide plate 4 and the top surface of the top plate 102 of the movable table 1 form a cavity 13. The striking mechanism 14 is disposed in the cavity 13.

[0040] In specific implementation, the bottom of the movable platform 1 is provided with a moving wheel 101. When the rotary drive mechanism 8 drives the partition 2 and the two movable platforms 1 to rotate together around the center of the partition 2, the positions of the two movable platforms 1 are swapped, thereby swapping the positions of the two clamping components 3.

[0041] like Figure 2-3 As shown, as a specific technical solution, the clamping assembly 3 includes a first clamping part and a second clamping part; the first clamping part and the second clamping part are respectively used to clamp two workpieces to be welded.

[0042] The first clamping part includes a first carrier 301. A first movable clamping seat 304 and a first fixed clamping seat 302 are respectively provided on the front and rear sides of the top of the first carrier 301, and the first fixed clamping seat 302 is fixedly connected to the first carrier 301. A first cylinder 303 is fixedly mounted on the first carrier 301, and the output shaft end of the first cylinder 303 is fixedly connected to the first movable clamping seat 304. The first cylinder 303 is used to drive the first movable clamping seat 304 away from or towards the first fixed clamping seat 302. A plurality of first positioning pins 305 are fixedly mounted on the first carrier 301. A plurality of second carriers 306 are provided on one side of the first clamping part. A support base 307 is fixedly installed on the top of the second carrier 306, and a plurality of second positioning pins 308 are also fixedly installed on the top of the second carrier 306. The second clamping part is located on the side of the second carrier 306. The second clamping part includes a third carrier 311. A second fixed clamping seat 315 is fixedly installed on the third carrier 311. A flipping frame 309 is hingedly installed on the third carrier 311 through a first rotating shaft 313. A first movable clamping seat 304 is fixedly installed at the bottom of the flipping frame 309. A second cylinder 312 is hingedly installed on one side of the third carrier 311, and the output shaft end of the second cylinder 312 is hinged to one side of the flipping frame 309.

[0043] The clamping assembly 3 is provided with a first clamping part and a second clamping part, which are used to clamp two different workpieces respectively, and the two workpieces are welded in a clamped and fixed state; the first clamping part and the second clamping part can also be used independently to fix and clamp a single workpiece.

[0044] The specific use of clamping assembly 3 is as follows: When fixing a workpiece through the second clamping part, the flipping frame 309 of the second clamping part is first in the flipped open state. A workpiece is placed on the support base 307 and the second fixed clamping base 315, and the workpiece is positioned by the second positioning pin 308. Then, the flipping frame 309 is driven to flip by the second cylinder 312, so that the second movable clamping base 314 presses down on the workpiece. The second movable clamping base 314 and the second fixed clamping base 315 clamp the workpiece. When fixing a workpiece through the first clamping part, the first cylinder 303 is first in the retracted state. There is a sufficient distance between the first movable clamping base 304 and the first fixed clamping base 302. The workpiece is placed between the first movable clamping base 304 and the first fixed clamping base 302, and the workpiece is positioned by the first positioning pin 305. The first cylinder 303 extends, driving the first movable clamping base 304 to press the workpiece. The workpiece is clamped and fixed by the first movable clamping base 304 and the first fixed clamping base 302.

[0045] After being clamped and fixed, the two workpieces are positioned by the first positioning pin 305 and the second positioning pin 308 respectively, and the clamping position of the two is fixed, maintaining a fixed posture and position for welding.

[0046] After welding, when removing the workpiece, the first cylinder 303 retracts, causing the first movable clamp 304 to move away from the first fixed clamp 302. The second cylinder 312 drives the flipping frame 309 to flip and open, releasing the clamping of the welded workpiece. Then, the workpiece can be removed manually or by mechanical grippers.

[0047] like Figure 2 and Figure 4 As shown, the bottoms of the first carrier 301, the second carrier 306, and the third carrier 311 of the clamping assembly 3 are all fixedly mounted with fixing frames 310; the guide plate 4 is a thin metal plate, which can be made of stainless steel; and as shown... Figure 4 As shown, multiple through slots 401 are provided on the guide plate 4 for the fixing frame 310 to pass through; after the fixing frame 310 passes through the through slots 401, its bottom is fixed to the top plate 102 of the movable table 1.

[0048] When welding is performed at the clamping assembly 3, the generated debris will fall onto the guide ramp 4. Its inclined setting facilitates the debris to slide off and avoids accumulation on the movable table 1. Furthermore, in order to facilitate the collection of debris, a detachable receiving cover can be installed on the side of the movable table 1 away from the partition 2 to collect the debris that slides off the guide ramp 4.

[0049] It should be noted that a wedge-shaped strip 5 is fixedly installed on both sides of the guide plate 4, and the wedge-shaped strip 5 is fixed to the top surface of the top plate 102 of the movable table 1; through the wedge-shaped design of the wedge-shaped strip 5, after providing fixation for both sides of the guide plate 4, the guide plate 4 is in an inclined state.

[0050] like Figure 7 As shown, as a specific technical solution, the rotary drive mechanism 8 includes a housing 801 and a base plate 802; the housing 801 is fixedly installed on the base plate 802, a second rotating shaft 803 is rotatably installed inside the housing 801, a motor 805 is fixedly installed on the top surface of the base plate 802, a second gear 806 is fixedly installed on the output shaft end of the motor 805, a first gear 804 is fixedly installed on the second rotating shaft 803, the first gear 804 and the second gear 806 are meshed and connected, and the top end of the second rotating shaft 803 is fixedly connected to the bottom center of the partition 2.

[0051] The bottom of the rotary drive mechanism 8 is directly fixed to the floor in the workshop. The motor 805 drives the second gear 806 to rotate. The second gear 806 meshes with the first gear 804, causing the first gear 804 and the second shaft 803 to rotate together. The second shaft 803 drives the two movable platforms 1 and the partition 2 to rotate together, so that the two movable platforms 1 can switch and exchange positions.

[0052] Among them, motor 805 is preferably a motor with a brake or self-locking structure, wherein the self-locking structure can be a worm gear or a worm.

[0053] like Figure 7-8 As shown, as a specific technical solution, a circular swashplate 10 is fixedly sleeved on the part of the second rotating shaft 803 located inside the housing 801; the bottom surface of the circular swashplate 10 is connected to a lubrication assembly 11 that provides lubrication for the meshing of the first gear 804 and the second gear 806 and a vertical movement mechanism 9 for driving the striking mechanism 14.

[0054] like Figure 7-8As shown, as a specific technical solution, the lubrication assembly 11 includes two sets of injection cylinders; the two sets of injection cylinders are respectively arranged on both sides of the bottom of the circular swashplate 10, and each injection cylinder includes a cylinder body 1101; the bottom of the cylinder body 1101 is fixed to the top surface of the base plate 802, a piston 1103 is fitted inside the cylinder body 1101, and the bottom surface of the piston 1103 and the inner wall of the cylinder body 1101 form a cavity, a second spring 1102 is arranged inside the cavity, and the two ends of the second spring 1102 abut against the bottom surface of the piston 1103 and the bottom inner wall of the cylinder body 1101 respectively, and a vertical rod 1104 is fixedly installed on the top of the piston 1103, and the vertical rod 1104 passes through. A hole is provided at the top of the cylinder 1101, and a spherical surface is provided at the top of the vertical rod 1104. The spherical surface of the vertical rod 1104 abuts against the bottom surface of the circular swashplate 10. A first one-way valve 1105 and a second one-way valve 1106 are installed at the bottom of the cylinder 1101. The first one-way valve 1105 is connected to an oil inlet pipe 1107. An oil tank 1110 is fixedly installed at the bottom of the base plate 802. The oil inlet pipe 1107 extends into the oil tank 1110. The second one-way valve 1106 is connected to an oil outlet pipe 1108. A nozzle 1109 is provided on the oil outlet pipe 1108, and the nozzle 1109 is located above the meshing point of the first gear 804 and the second gear 806.

[0055] The oil outlet pipe 1108 consists of a three-way pipe and two fittings, and is made of rigid pipe. The bottom end of the three-way pipe is connected to the nozzle 1109, while the other two ends of the three-way pipe are connected to the second one-way valves 1106 on the two injection cylinders respectively through two fittings.

[0056] The lubrication assembly 11 operates as follows: when the second rotating shaft 803 is driven to rotate, the swashplate 10 on it rotates together, and the swashplate 10... Figure 7-8 As shown, it is in a tilted state. Figure 7 At this point, the left side of the swashplate 10 is lower than the right side. Figure 8 At this time, the swash plate 10 is higher on the left and lower on the right. When rotating, the swash plate 10 switches back and forth between the two states.

[0057] From the circular swashplate 10 Figure 7 Switch to Figure 8In the indicated state, the swashplate 10 presses down on the vertical rod 1104 of the injection cylinder on the right side inside the outer casing 801. The vertical rod 1104 drives the piston 1103 to move downward, increasing the compression of the second spring 1102. At the same time, the piston 1103 pushes the lubricating oil in the cavity, causing the lubricating oil to pass through the second one-way valve 1106 and the oil outlet pipe 1108, and then be sprayed from the nozzle 1109 to the meshing position of the first gear 804 and the second gear 806. 06 provides lubrication and reduces wear; while the position of the circular swashplate 10 above the left side of the injection cylinder inside the outer casing 801 is increased. Through the elastic force of the second spring 1102, the piston 1103 and the vertical rod 1104 move upward together. The vertical rod 1104 always abuts against the bottom surface of the circular swashplate 10, and the volume of the cavity inside the injection cylinder increases, so as to draw oil and allow the oil in the oil tank 1110 to enter the cavity through the oil inlet pipe 1107 and the first one-way valve 1105 to replenish the oil.

[0058] And the circular swashplate 10 from Figure 8 Switch to Figure 7 In the indicated state, the swash plate 10 presses down on the vertical rod 1104 of the left-side injection cylinder inside the housing 801, injecting oil into the oil outlet pipe 1108 through the injection cylinder and spraying it out through the nozzle 1109 to lubricate the meshing point of the first gear 804 and the second gear 806, while the right-side injection cylinder inside the housing 801 draws in and replenishes the oil.

[0059] Through the above design, lubrication can be automatically provided for the first gear 804 and the second gear 806 when the shaft rotates, reducing wear during continuous operation.

[0060] like Figure 5 As shown, it illustrates the state of the rotary drive mechanism 8 installed on the workshop floor, while the oil tank 1110 is pre-buried underground. An L-shaped oil replenishment pipe is set on the right side of the oil tank 1110 for replenishing oil in the oil tank 1110.

[0061] like Figure 7-8 As shown, as a specific technical solution, an oil receiving cover 12 is provided below the meshing point of the first gear 804 and the second gear 806; the bottom of the oil receiving cover 12 is fixedly connected to a return pipe 1201, the return pipe 1201 is fixed to the base plate 802, and the bottom end of the return pipe 1201 is connected to the top of the oil tank 1110.

[0062] During the lubrication process, excess lubricating oil at the meshing point of the first gear 804 and the second gear 806 falls back into the oil receiving cover 12 and is transported back to the oil tank 1110 through the return pipe 1201.

[0063] In practical implementation, a cooling component can be installed in the oil tank 1110 to keep the lubricating oil at a low temperature for lubrication, thereby cooling the first gear 804 and the second gear 806.

[0064] like Figure 9-10 As shown, as a specific technical solution, the striking mechanism 14 includes a third rotating shaft 1402 rotatably installed in the cavity 13. A third gear 1403 and a cam 1404 are fixedly sleeved on the third rotating shaft 1402. A rack 1401 is meshed with one side of the third gear 1403. The bottom of the rack 1401 is connected to the vertical movement mechanism 9.

[0065] like Figure 7-9 As shown, as a specific technical solution, the vertical movement mechanism 9 includes a rotating connecting part; the top and bottom of the rotating connecting part are respectively connected to a connecting rod 907 and a movable rod 903; the connecting rod 907 is slidably sleeved with a guide hole 103 opened on the top plate 102, the top end of the connecting rod 907 is fixed to the bottom of the rack 1401, the movable rod 903 is slidably sleeved with a through hole opened on the top of the outer shell 801, and the bottom end of the movable rod 903 is provided with a bent part, the bent part of the movable rod 903 extends to the bottom of one side of the circular swashplate 10, a concave hole is opened on the bent part of the movable rod 903, a ball bearing 904 is provided in the concave hole, and the ball bearing 904 abuts against the bottom surface of one side of the circular swashplate 10; the bottom of the movable rod 903 is elastically connected to a base 906 fixed on the inner wall of the outer shell 801 through a first spring 905.

[0066] like Figure 5-6 As shown, as a specific technical solution, the rotating connection part includes an outer ring 901 and an inner ring 902; the outer ring 901 is provided with an annular groove, the inner ring 902 is embedded in the annular groove, the cross-section of the inner ring 902 and the annular groove are both convex, the top surface of the inner ring 902 is fixed to the bottom end of the connecting rod 907, and the bottom surface of the outer ring 901 is fixed to the top end of the movable rod 903.

[0067] The aforementioned convex structure prevents the inner ring 902 and the outer ring 901 from separating vertically, ensuring that they can only rotate.

[0068] Since the connecting rod 907 is located on the movable platform 1, it needs to rotate with the movable platform 1, while the movable rod 903 is located on the outer shell 801 and does not rotate. However, by setting the rotating connection part, when the connecting rod 907 rotates, the inner ring 902 rotates with the connecting rod 907 and rotates within the outer ring 901, which does not affect the movable rod 903 from driving the connecting rod 907 to move up and down.

[0069] The vertical movement mechanism 9 and the striking mechanism 14 operate as follows: the circular swashplate 10... Figure 7-8 Switching between the two states.

[0070] Circular swashplate 10 Figure 7 In this state, connecting rod 907 and guide hole 103 are as follows Figure 10 As shown.

[0071] From the circular swashplate 10 Figure 7 Switch to Figure 8 In the indicated state, the height of the circular swashplate 10 at the bend of the movable rod 903 increases. Through the compression force of the first spring 905, the movable rod 903 moves upward, while the ball bearing 904 remains in contact with the bottom surface of the circular swashplate 10. The movable rod 903 drives the connecting rod 907 and the rack 1401 to move upward together through the rotating connecting part. Through the meshing transmission between the rack 1401 and the gear, the third rotating shaft 1402 drives the cam 1404 to rotate, and the cam 1404 separates from the bottom surface of the guide plate 4.

[0072] From the circular swashplate 10 Figure 8 Switch to Figure 7 In the indicated state, the height of the swashplate 10 at the bend of the movable rod 903 decreases, and the swashplate 10 presses down on the ball bearing 904, causing the ball bearing 904, the movable rod 903, the rotating connecting part, and the connecting rod 907 to move downward together, compressing the first spring 905. The connecting rod 907 drives the rack 1401 to move downward. Through the meshing transmission between the rack 1401 and the third gear 1403, the third rotating shaft 1402 drives the cam 1404 to rotate. The cam 1404 strikes the bottom surface of the guide plate 4 to facilitate the sliding of debris on the guide plate 4.

[0073] Applying the above positioning fixture to a welding device, such as Figure 1 As shown. The welding apparatus includes:

[0074] At least one welded part is disposed on one side of the positioning fixture;

[0075] The welding section includes a robotic arm 6 and a welding torch 7 mounted to the end of the robotic arm 6.

[0076] The positioning fixture drives two movable tables 1 to rotate via a rotary drive mechanism 8, causing the clamping components 3 on the two movable tables 1 to alternately feed material to the welding section. When the clamping component 3 moves to the side of the welding section to perform welding processing on the workpiece on it, the other clamping component 3 uses the aforementioned welding time to change material, remove the welded workpiece, and clamp and fix the next workpiece to be welded. This avoids the need to use a single clamping component 3 to change material after the previous workpiece is welded, which would reduce welding efficiency. By using two clamping components 3 alternately, the welding efficiency is improved.

[0077] This invention is not limited to the embodiments described above. Any changes in shape or structure shall fall within the protection scope of this invention. The protection scope of this invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of this invention, but all such changes and modifications shall fall within the protection scope of this invention.

Claims

1. A positioning fixture, comprising a movable table (1), wherein a top plate (102) is provided on the top of the movable table (1); characterized in that, Also includes: The partition (2) has two movable platforms (1), and the two movable platforms (1) are fixedly installed on the bottom sides of the partition (2) respectively. The top plates (102) of the two movable platforms (1) are provided with clamping components (3). A rotary drive mechanism (8) is provided, the output end of which is connected to the bottom center of the partition plate (2). The guide plate (4) is fixedly installed on the top plate (102) of the movable table (1), and the height of the top surface of the guide plate (4) gradually decreases in the direction away from the partition plate (2). A striking mechanism (14) is used to strike a guide plate (4). The bottom surface of the guide plate (4) and the top surface of the top plate (102) of the movable table (1) form a cavity (13). The striking mechanism (14) is located inside the cavity (13). The rotary drive mechanism (8) includes a housing (801) and a base plate (802); the housing (801) is fixedly mounted on the base plate (802), a second rotating shaft (803) is rotatably mounted inside the housing (801), a motor (805) is fixedly mounted on the top surface of the base plate (802), a second gear (806) is fixedly mounted on the output shaft end of the motor (805), a first gear (804) is fixedly mounted on the second rotating shaft (803), the first gear (804) meshes with the second gear (806), and the top end of the second rotating shaft (803) is fixedly connected to the bottom center of the partition plate (2); a fixed sleeve is fixedly fitted on the portion of the second rotating shaft (803) located inside the housing (801). A circular swash plate (10) is connected to the bottom surface of the circular swash plate (10), which is connected to a lubrication assembly (11) for providing lubrication to the meshing point of the first gear (804) and the second gear (806) and a vertical movement mechanism (9) for driving the striking mechanism (14). The lubrication assembly (11) includes two sets of syringes. The two sets of syringes are respectively arranged on both sides of the bottom of the circular swash plate (10). Each syringe includes a cylinder (1101). The bottom of the cylinder (1101) is fixed to the top surface of the base plate (802). A piston (1103) is connected inside the cylinder (1101), and the bottom surface of the piston (1103) and the inner wall of the cylinder (1101) form a cavity. A second spring (1102) is provided inside the cavity. The two ends of the spring (1102) abut against the bottom surface of the piston (1103) and the bottom inner wall of the cylinder (1101), respectively. A vertical rod (1104) is fixedly installed on the top of the piston (1103). The vertical rod (1104) passes through the hole opened on the top of the cylinder (1101), and the top of the vertical rod (1104) is provided with a spherical surface. The spherical surface of the vertical rod (1104) abuts against the bottom surface of the circular swashplate (10). A first one-way valve (1105) and a second one-way valve (1106) are installed at the bottom of the cylinder (1101). The first one-way valve (1105) is connected to an oil inlet pipe (1107). An oil tank (1110) is fixedly installed at the bottom of the base plate (802). The oil inlet pipe (1107) extends... Extending into the oil tank (1110), the second one-way valve (1106) is connected to an oil outlet pipe (1108), and a nozzle (1109) is provided on the oil outlet pipe (1108), and the nozzle (1109) is located above the meshing point of the first gear (804) and the second gear (806); the striking mechanism (14) includes a third rotating shaft (1402) rotatably mounted in the cavity (13), a third gear (1403) and a cam (1404) are fixedly sleeved on the third rotating shaft (1402), a rack (1401) is meshed on one side of the third gear (1403), and the bottom of the rack (1401) is connected to the vertical movement mechanism (9); the vertical movement mechanism (9) includes a rotating connection part;The top and bottom of the rotating connection are respectively connected to a connecting rod (907) and a movable rod (903); the connecting rod (907) is slidably sleeved with a guide hole (103) opened on the top plate (102), the top end of the connecting rod (907) is fixed to the bottom of the rack (1401), the movable rod (903) is slidably sleeved with a through hole opened on the top of the outer shell (801), and the bottom end of the movable rod (903) is provided with a bent part, the bent part of the movable rod (903) extends to the bottom of one side of the circular swashplate (10), a concave hole is opened on the bent part of the movable rod (903), a ball bearing (904) is provided in the concave hole, and the ball bearing (904) abuts against the bottom surface of one side of the circular swashplate (10); the bottom of the movable rod (903) is elastically connected to a base (906) fixed on the inner wall of the outer shell (801) through a first spring (905).

2. A positioning fixture as described in claim 1, characterized in that: The clamping assembly (3) includes a first clamping part and a second clamping part; the first clamping part and the second clamping part are used to clamp two workpieces to be welded, respectively.

3. A positioning fixture as described in claim 1, characterized in that: An oil receiving cover (12) is provided below the meshing point of the first gear (804) and the second gear (806); the bottom of the oil receiving cover (12) is fixedly connected to a return pipe (1201), the return pipe (1201) is fixed to the base plate (802), and the bottom end of the return pipe (1201) is connected to the top of the oil tank (1110).

4. A positioning fixture as described in claim 1, characterized in that: The rotating connection includes an outer ring (901) and an inner ring (902); the outer ring (901) is provided with an annular groove, the inner ring (902) is embedded in the annular groove, the cross-section of the inner ring (902) and the annular groove are both convex, the top surface of the inner ring (902) is fixed to the bottom end of the connecting rod (907), and the bottom surface of the outer ring (901) is fixed to the top end of the movable rod (903).

5. A welding apparatus, characterized in that, The welding apparatus includes: The positioning clamp according to any one of claims 1 to 4; At least one welded part is disposed on one side of the positioning fixture; The welding section includes a robotic arm (6) and a welding torch (7) mounted to the end of the robotic arm (6).

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