Welding fixture and method of use

Abstract

The present invention belongs to the technical field of welding fixtures, and provides a welding fixture and a method of using the same, including a welding position connecting plate and a group of fixture components, wherein a group of the fixture components are respectively fixedly mounted on opposite sides of the welding position connecting plate, and are used to clamp a welding workpiece; the fixture component includes a mouth-shaped assembly frame, a pair of chuck blocks, and a lifting mechanism, wherein the mouth-shaped assembly frame is fixedly mounted on one side of the welding position connecting plate, and a pair of the chuck blocks can be slidably mounted in the mouth-shaped assembly frame, and the lifting mechanism is arranged on the mouth-shaped assembly frame. The welding fixture provided by the present invention realizes fast and stable clamping of the welding workpiece through the lifting mechanism and reasonable structural design, and significantly improves the efficiency and precision of the welding operation. At the same time, the fixture simplifies the operation process, reduces the labor intensity, and provides strong support for the welding operation of tubular workpieces.

Description

Technical Field

[0001] The invention belongs to the technical field of welding fixtures, and in particular relates to a welding fixture and a use method thereof. Background Art

[0002] During welding, in order to ensure the accuracy of the workpiece docking, a clamp is usually used to fix the two workpieces to be welded. The current welding clamps are usually selected according to the welding needs of different workpieces. When welding tubular workpieces, the clamps used are usually screwed with bolts, which is cumbersome to operate. Especially when multiple bolts need to be screwed, it is easy to cause uneven force on the workpiece. The existing document CN209902576U discloses a welding clamp that has the above-mentioned problem of repeatedly screwing bolts to fix, which is laborious to operate. Summary of the invention

[0003] The present invention provides a welding fixture and a method of use, aiming to solve the problem raised in the above background technology that the fixtures currently used usually adopt bolts to be screwed, which is cumbersome to operate and easily causes uneven force on the workpiece, especially when multiple bolts need to be screwed.

[0004] To solve the above problems, the present invention is implemented as follows: a welding fixture comprises: a welding position connecting plate and a group of fixture components, wherein a group of the fixture components are respectively fixedly mounted on opposite sides of the welding position connecting plate for clamping the welding workpiece; the fixture component comprises a mouth-shaped assembly frame, a pair of chuck blocks and a lifting mechanism, the mouth-shaped assembly frame is fixedly mounted on one side of the welding position connecting plate, a pair of the chuck blocks can be slidably mounted in the mouth-shaped assembly frame, and the lifting mechanism is arranged on the mouth-shaped assembly frame for driving a pair of the chuck blocks to slide closer or farther along the mouth-shaped assembly frame; wherein the welding operation position is between the welding position connecting plate and the group of fixture components, the welding position connecting plate is located on one side of the bottom of the mouth-shaped assembly frame, and the top surface of the welding position connecting plate is not higher than the bottom inner wall surface of the mouth-shaped assembly frame.

[0005] Preferably, the lifting mechanism includes two lifting slides opened on the same side of the mouth-shaped assembly frame, the two lifting slides are respectively arranged corresponding to the two chuck blocks, and the two chuck blocks are fixedly installed with bottoming blocks on the sides away from each other, which can contact or separate from the inner wall of the mouth-shaped assembly frame, and lifting slides can be slidably installed in the two lifting slides, and the same side of the two lifting slides is respectively fixedly connected to the two bottoming blocks, the mouth-shaped assembly frame is fixedly installed with an axis seat plate on one side of the lifting slide, and a lifting drive shaft is rotatably installed on the axis seat plate, the setting direction of the lifting drive shaft is consistent with the sliding direction of the chuck block, and the lifting drive shaft has two threaded sections with opposite thread rotation directions, and the two threaded sections are respectively threadedly driven and connected to the two lifting slides.

[0006] Preferably, a sprocket 1 is fixedly sleeved on the lifting drive shaft on a group of the clamp assemblies, and the same chain 1 is sleeved on the two sprockets 1.

[0007] Preferably, a power motor is fixedly mounted on one of the mouth-shaped assembly frames on a group of the clamp assemblies, and a bevel gear 1 is fixedly mounted on the output shaft of the power motor and the corresponding lifting drive shaft, and the two bevel gears 1 are meshed with each other.

[0008] Preferably, the opening direction of the lifting slide is consistent with the sliding direction of the chuck block, and the opening width of the lifting slide is smaller than the width of the chuck block.

[0009] Preferably, a pair of the chuck blocks are each provided with two rotating support shafts that are fixedly installed thereon, and both ends of the four rotating support shafts are hingedly installed with a rotating support, and the eight rotating supports are respectively located at both sides of a pair of the chuck blocks and are fixedly installed with a workpiece clamping plate, and the eight workpiece clamping plates are respectively formed into a small group in pairs, and the two small groups form a large group, and the two large groups of workpiece clamping plates are respectively located on the mutually corresponding sides of a pair of the chuck blocks for clamping the workpiece, and the eight workpiece clamping plates are each provided with an adjusting slide, and the same interpenetrating rod is installed through the two adjusting slides of each corresponding group of the four small groups, and ear plates are hingedly installed at both ends of the four interpenetrating rods, and two rectangular openings are provided on the pair of the chuck blocks, and lifting screws can be rotatably installed in the four rectangular openings, and lifting slides are threadedly installed on the four lifting screws, and the four lifting slides can be slidably passed through the four rectangular openings, and the two ends of the four lifting slides are respectively hingedly connected to the corresponding ear plates.

[0010] Preferably, one end of the four lifting screws corresponding to the two bottoming blocks respectively extends outside the two chuck blocks and is fixedly mounted with a sprocket 2, and the two sprockets 2 located on the same chuck block are sleeved with the same chain 2.

[0011] Preferably, one side corresponding to a pair of the chuck blocks is provided with an avoidance notch for avoiding the movement of the insertion rod, and the avoidance notch is an arc-shaped opening.

[0012] Preferably, rubber pads are fixedly mounted on the eight workpiece clamping plates for contacting the welding workpieces.

[0013] The present invention also includes a method for using the welding fixture, comprising the following steps:

[0014] Step 1: insert the two workpieces to be welded from both sides of a set of fixture components, that is, insert from both sides of two mouth-shaped assembly frames, so that they are located between the corresponding two chuck blocks, and the butt joint is located above the welding position connecting plate, and then drive the chuck block close to the welding workpiece;

[0015] Step 2: Start the power motor, the output shaft of the power motor drives the corresponding two bevel gears to rotate, so that the corresponding lifting drive shafts are driven to rotate. At this time, sprocket 1 and chain 1 are used to make the two lifting drive shafts rotate synchronously. The lifting drive shaft uses a threaded section to drive the corresponding two lifting slides to approach each other. The lifting slides slide along the corresponding lifting slides and drive the fixed bottoming block and the chuck block to slide until the rubber pad contacts the welding workpiece and then pauses.

[0016] Step three: Then adjust the inclination angle of the workpiece clamp according to the needs of the welding workpiece. When adjusting, make the lifting screw slide, and the corresponding two lifting screws are synchronously driven by sprocket two and chain two, so that the lifting screw drives the lifting slide to slide along the rectangular opening, and the lifting slide drives the ear plate to move, so that the inserted rod slides along the adjustment slide, so that the workpiece clamp drives the rotating support to rotate along the rotating support shaft, and adjust the inclination angle of the workpiece clamp. After proper adjustment, continue to start the power motor until the workpiece clamp and the rubber pad are fixed to the welding workpiece. At this time, people can weld at the welding position connecting plate.

[0017] Beneficial effects: Compared with the prior art, the present invention adopts a pair of chuck blocks slidably installed in a mouth-shaped assembly frame, which can slide closer or farther along the frame through the drive of the lifting mechanism, thereby realizing the clamping and release of the welding workpiece; the lifting mechanism simplifies the cumbersome operation of traditional bolt tightening, and quickly and smoothly adjusts the position of the chuck block through mechanical or hydraulic means to ensure that the workpiece is evenly stressed during the clamping process, avoiding errors and inconveniences caused by manually tightening multiple bolts; in addition, the layout between the welding position connecting plate and the clamp assembly ensures that the welding operation position is spacious and easy to operate; the welding position connecting plate is located on one side of the bottom of the mouth-shaped assembly frame, and its top surface is not higher than the bottom inner wall of the frame. Such a design ensures the smooth progress of the welding operation without affecting people's operation and the maximum clamping of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main three-dimensional structure of a welding fixture provided by the present invention;

[0019] Figure 2 yes Figure 1 The other side of the three-dimensional structure schematic diagram shown;

[0020] Figure 3 It is a schematic diagram of the main three-dimensional structure of the clamp assembly in the present invention;

[0021] Figure 4 yes Figure 3 The other side of the three-dimensional structure schematic diagram shown;

[0022] Figure 5 yes Figure 3 The main structure diagram shown;

[0023] Figure 6 yes Figure 5 The schematic diagram of the main cross-sectional structure shown;

[0024] Figure 7 for Figure 6 An enlarged structural diagram of part A shown in FIG.

[0025] Figure 8 for Figure 6 An enlarged schematic diagram of the structure of part B shown in FIG.

[0026] Fig. 9 for Figure 6 An enlarged schematic diagram of the structure of part C shown in FIG.

[0027] Fig.10 It is a schematic diagram of the main three-dimensional structure of the chuck block in the present invention;

[0028] Fig.11 It is a top view of a three-dimensional assembly structure diagram of a set of workpiece clamping plates 16 in the present invention;

[0029] Fig.12 It is a schematic diagram of the assembly structure of the bracket plate and its components in the present invention.

[0030] Figure numerals: 1, welding position connecting plate; 2, mouth-shaped assembly frame; 3, chuck block; 4, lifting slide; 5, bottoming block; 6, lifting slide plate; 7, shaft seat plate; 8, lifting drive shaft; 9, threaded section; 10, sprocket one; 11, chain one; 12, power motor; 13, bevel gear one; 14, rotating support shaft; 15, rotating support; 16, workpiece clamp; 17, adjustment slide; 18, insertion rod; 19, ear plate; 20, rectangular opening; 21, lifting screw; 22, lifting slide ; 23. Sprocket two; 24. Chain two; 25. Avoidance gap; 26. Rubber pad; 27. Avoidance slide; 28. Assembly bracket plate; 29. ​​Spline cylinder; 30. Sprocket three; 31. Chain three; 32. Conversion short shaft; 33. Bevel gear two; 34. Spline shaft; 35. Mounting frame; 36. Conversion long shaft; 37. End shaft; 38. Bevel gear three; 39. Bevel gear four; 40. Bottom frame; 41. Synchronous long shaft; 42. Bevel gear five; 43. Sprocket four; 44. Chain four. DETAILED DESCRIPTION

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of this application; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit the application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0032] The embodiment of the present invention provides a welding fixture and a method of using the same. Figure 1-12 As shown, the welding fixture includes: a welding position connecting plate 1 and a group of fixture components, wherein a group of the fixture components are respectively fixedly mounted on opposite sides of the welding position connecting plate 1 for clamping the welding workpiece; the fixture component includes a mouth-shaped assembly frame 2, a pair of chuck blocks 3 and a lifting mechanism, wherein the mouth-shaped assembly frame 2 is fixedly mounted on one side of the welding position connecting plate 1, and a pair of the chuck blocks 3 can be slidably mounted in the mouth-shaped assembly frame 2, and the lifting mechanism is arranged on the mouth-shaped assembly frame 2 for driving a pair of the chuck blocks 3 to slide closer or farther along the mouth-shaped assembly frame 2; wherein, the welding operation position is between the welding position connecting plate 1 and the group of fixture components, the welding position connecting plate 1 is located on one side of the bottom of the mouth-shaped assembly frame 2, and the top surface of the welding position connecting plate 1 is not higher than the bottom inner wall surface of the mouth-shaped assembly frame 2.

[0033] In this embodiment, the welding fixture mainly includes a welding position connecting plate 1 and a set of fixture components, and these components are precisely matched to achieve efficient and stable welding operations.

[0034] The clamp components are fixedly mounted on opposite sides of the welding position connecting plate 1, and are specially designed for clamping welding workpieces. Each clamp component consists of a mouth-shaped assembly frame 2, a pair of chuck blocks 3, and a lifting mechanism. The mouth-shaped assembly frame 2 is firmly fixed on one side of the welding position connecting plate 1, and the mouth-shaped assembly frame 2 provides a precise sliding track for the chuck blocks 3. The pair of chuck blocks 3 are slidably mounted in the mouth-shaped assembly frame 2, and can slide closer or farther along the frame through the drive of the lifting mechanism, thereby achieving the clamping and release of the welding workpiece.

[0035] The lifting mechanism simplifies the cumbersome operation of traditional bolt tightening, and adjusts the position of the chuck block 3 quickly and smoothly through mechanical or hydraulic means, ensuring that the workpiece is evenly stressed during the clamping process, avoiding errors and inconveniences caused by manually tightening multiple bolts.

[0036] In addition, the layout between the welding position connecting plate 1 and the clamp assembly ensures that the welding operation position is spacious and easy to operate. The welding position connecting plate 1 is located on one side of the bottom of the mouth-shaped assembly frame 2, and its top surface is not higher than the bottom inner wall surface of the frame. This design ensures the smooth progress of the welding operation without affecting people's operation and the maximum clamping of the workpiece.

[0037] In summary, the welding fixture of the present invention realizes fast and stable clamping of the welding workpiece through the lifting mechanism and reasonable structural design, significantly improving the efficiency and accuracy of the welding operation. At the same time, the fixture simplifies the operation process, reduces labor intensity, and provides strong support for the welding operation of tubular workpieces.

[0038] In a further preferred embodiment of the present invention, the lifting mechanism includes two lifting slides 4 opened on the same side of the mouth-shaped assembly frame 2, the two lifting slides 4 are respectively arranged corresponding to the two chuck blocks 3, and the two chuck blocks 3 are fixedly installed with bottoming blocks 5 on the sides away from each other, which can contact or separate from the inner wall of the mouth-shaped assembly frame 2, and lifting slides 6 can be slidably installed in the two lifting slides 4, and the same side of the two lifting slides 6 is respectively fixedly connected to the two bottoming blocks 5, and the mouth-shaped assembly frame 2 is located on one side of the lifting slide 6. A lifting drive shaft 8 is rotatably installed on the shaft seat plate 7, and the setting direction of the lifting drive shaft 8 is consistent with the sliding direction of the chuck block 3. The lifting drive shaft 8 has two threaded sections 9 with opposite thread rotation directions, and the two threaded sections 9 are respectively threadedly driven and connected to the two lifting slides 6.

[0039] In this embodiment, the lifting mechanism includes two lifting slides 4, which are symmetrically arranged on the same side of the mouth-shaped assembly frame 2 and are respectively arranged corresponding to the two chuck blocks 3. A bottoming block 5 is fixedly installed on one side of each chuck block 3 away from each other, and these bottoming blocks 5 can contact the inner wall of the mouth-shaped assembly frame 2 when the chuck block 3 moves to the extreme position, thereby limiting its further movement and protecting the transmission component.

[0040] Lifting slide plates 6 are slidably mounted in the lifting slide 4, and these lifting slide plates 6 are fixedly connected to the bottoming block 5 on the chuck block 3, so when the lifting slide plates 6 move in the lifting slide 4, the chuck block 3 can be driven to move synchronously. In order to achieve precise control of the lifting slide plates 6, a shaft seat plate 7 is fixedly mounted on one side of the mouth-shaped assembly frame 2, and a lifting drive shaft 8 is rotatably mounted on the shaft seat plate 7. The setting direction of the lifting drive shaft 8 is consistent with the sliding direction of the chuck block 3, ensuring direct transmission of the driving force.

[0041] The lifting drive shaft 8 is designed with two thread segments 9 with opposite thread rotation directions, and the two thread segments 9 are respectively threadedly connected to the two lifting slides 6, which means that when the lifting drive shaft 8 rotates, the two lifting slides 6 will move in opposite directions due to the interaction of the threads. This design realizes the synchronous and reverse movement of the two chuck blocks 3 controlled by one driving source, greatly simplifies the mechanical structure, and improves the convenience and efficiency of operation.

[0042] In terms of usage, the user only needs to drive the lifting drive shaft 8 to rotate through an external power source to achieve automatic clamping or release of the chuck block 3. During the clamping process, the chuck block 3 gradually approaches the welding workpiece until the bottoming block 5 contacts the inner wall of the mouth-shaped assembly frame 2. At this time, the clamping force reaches the maximum and is evenly distributed, effectively avoiding the problem of uneven force on the workpiece. When releasing, the lifting drive shaft 8 can be rotated in the opposite direction.

[0043] This embodiment of the present invention not only simplifies the operation process, but also improves the clamping accuracy and stability, and provides more reliable technical support for the welding operation of the tubular workpiece.

[0044] In a further preferred embodiment of the present invention, a sprocket 10 is fixedly sleeved on the lifting drive shaft 8 on a group of the clamp assemblies, and the same chain 11 is sleeved on the two sprockets 10.

[0045] In this embodiment, a sprocket 10 is fixedly sleeved on each lifting drive shaft 8, and the two sprockets 10 are connected by the same chain 11.

[0046] This design enables that when an external power source drives one of the lifting drive shafts 8 to rotate, the other lifting drive shaft 8 can be driven to rotate synchronously through the transmission effect of the chain 11. Since the two lifting drive shafts 8 rotate synchronously and at the same speed, the chuck blocks 3 driven by them will also move at the same speed and direction, ensuring that the clamping state of the welding workpiece in the clamp assemblies on both sides is consistent and stable.

[0047] In terms of usage, users only need to operate one power source to control the clamping action of the two clamp components at the same time, which greatly simplifies the operation process. At the same time, due to the reliability and stability of the chain drive, this design also improves the overall working performance and service life of the clamp components.

[0048] In terms of the use environment, the welding fixture of the present invention is suitable for various occasions that require precise clamping and stable welding, especially welding operations of tubular workpieces. Its unique lifting mechanism and synchronous transmission design make the fixture more flexible and efficient during operation, and can effectively avoid the problem of uneven force on the workpiece.

[0049] In summary, this embodiment of the present invention achieves synchronous driving between the clamp components by introducing a chain transmission mechanism, thereby further improving the practicality and performance of the welding clamp.

[0050] In a further preferred embodiment of the present invention, a power motor 12 is fixedly mounted on one of the mouth-shaped assembly frames 2 on a group of the clamp assemblies, and a bevel gear 13 is fixedly mounted on the output shaft of the power motor 12 and the corresponding lifting drive shaft 8, and the two bevel gears 13 are meshed with each other.

[0051] In this embodiment, the power motor 12 is fixedly mounted on one of the mouth-shaped assembly frames 2, and a bevel gear 13 is fixedly mounted on its output shaft and the corresponding lifting drive shaft 8, and the two bevel gears 13 are meshed with each other.

[0052] This design enables the power motor 12 to directly drive the corresponding lifting drive shaft 8 to rotate through the transmission effect of the bevel gear 13 when it is started. Due to the meshing relationship between the two bevel gears 13, the accuracy and efficiency of power transmission are ensured. At the same time, since the other lifting drive shaft 8 is connected to the first lifting drive shaft 8 through the chain 11, when the first lifting drive shaft 8 rotates, it will also drive the second lifting drive shaft 8 to rotate synchronously, thereby realizing the synchronous clamping or releasing action of the two clamp assemblies.

[0053] In terms of usage, the user only needs to start the power motor 12 to simultaneously control the clamping action of the two clamp components through the transmission of the bevel gear 13 and the chain 11. This automated operation method not only simplifies the operation process and improves work efficiency, but also reduces the labor intensity of the operator.

[0054] In terms of the use environment, the welding fixture of the present invention is particularly suitable for occasions requiring high-precision and high-efficiency welding operations. Its high degree of automation makes the fixture more stable and reliable during operation, and can effectively avoid welding quality problems caused by improper human operation.

[0055] In addition, the beneficial effects of the present invention are also reflected in the following aspects: First, through the transmission design of the power motor 12 and the bevel gear, precise synchronous control of the clamp assembly is achieved; second, the introduction of chain transmission further enhances the linkage between the clamp assemblies; third, the overall structure is compact and the design is reasonable, which is convenient for installation and use at industrial production sites.

[0056] In a further preferred embodiment of the present invention, the opening direction of the lifting slide 4 is consistent with the sliding direction of the chuck block 3 , and the opening width of the lifting slide 4 is smaller than the width of the chuck block 3 .

[0057] In this embodiment, the opening direction of the lifting slide 4 is completely consistent with the sliding direction of the chuck block 3. This design ensures that the chuck block 3 can move smoothly along a predetermined trajectory during the sliding process, avoiding the occurrence of deviation or shaking.

[0058] At the same time, the opening width of the lifting slide 4 is set to be smaller than the width of the clamping block 3, so as to limit the lateral movement of the clamping block 3 during the sliding process and prevent it from deviating from the track due to uneven force.

[0059] In terms of usage, the user does not need to perform additional operations on the lifting slide 4, and can realize automatic clamping or releasing of the chuck block 3 by simply controlling the rotation of the lifting drive shaft 8.

[0060] In a further preferred embodiment of the present invention, two rotating support shafts 14 are fixedly installed on a pair of the chuck blocks 3, and rotating supports 15 are hingedly installed at both ends of the four rotating support shafts 14. The eight rotating supports 15 are respectively located on both sides of the pair of the chuck blocks 3 and are fixedly installed with workpiece clamps 16. The eight workpiece clamps 16 are respectively divided into a small group of two, and two small groups are formed into a large group. The two large groups of workpiece clamps 16 are respectively located on the corresponding sides of the pair of the chuck blocks 3 for cooperating in clamping the workpiece. Adjustment slides are provided on the eight workpiece clamps 16 17, the same insertion rod 18 is installed through the two adjustment sliding openings 17 of each corresponding group of the four groups, and ear plates 19 are hingedly installed at both ends of the four insertion rods 18. A pair of the chuck blocks 3 are provided with two rectangular openings 20, and lifting screws 21 can be rotatably installed in the four rectangular openings 20. Lifting slides 22 are threadedly installed on the four lifting screws 21. The four lifting slides 22 can slide through the four rectangular openings 20 respectively, and the two ends of the four lifting slides 22 are hingedly connected to the corresponding ear plates 19 respectively.

[0061] In this embodiment, two rotating support shafts 14 are fixedly installed on each of the pair of chuck blocks 3, and these rotating support shafts 14 serve as the rotating axis of the workpiece clamping plates 16. Rotating supports 15 are hingedly installed at both ends of the four rotating support shafts 14, and eight workpiece clamping plates 16 are further fixedly installed on the rotating supports 15. These workpiece clamping plates 16 are divided into two large groups, four in each group, and are respectively located on the corresponding sides of a pair of chuck blocks 3 for cooperating in clamping the workpiece.

[0062] The workpiece clamping plates 16 are all provided with adjustment sliding openings 17. This design allows the relative positions between the workpiece clamping plates 16 to be changed by adjusting the insertion rods 18, thereby realizing flexible clamping of workpieces of different sizes and shapes. The same insertion rod 18 is installed through the two adjustment sliding openings 17 of each group, and ear plates 19 are hingedly installed at both ends of the insertion rod 18, providing connection points for subsequent lifting and lowering adjustments.

[0063] In order to drive the lifting and lowering movement of the workpiece clamping plate 16, a rectangular opening 20 is provided on each of the pair of chuck blocks 3, and a lifting screw 21 is rotatably installed in the rectangular opening 20. The lifting screw 21 is threadedly connected to the lifting slide 22, and the lifting slide 22 is connected to the workpiece clamping plate 16 through the ear plates 19 at both ends thereof. Therefore, when the lifting screw 21 is rotated, the lifting slide 22 will slide along the rectangular opening 20, and then drive the workpiece clamping plate 16 to rise and fall through the ear plates 19 and the interlaced rods 18, so as to achieve accurate clamping or release of the workpiece.

[0064] In terms of usage, the user first adjusts the position of the insertion rod 18 in the adjustment slide 17 according to the size and shape of the workpiece to adapt the workpiece clamping plate 16 to the contour of the workpiece. Then, the lifting screw 21 is rotated to drive the workpiece clamping plate 16 to a suitable clamping position through the transmission of the lifting slide 22 and the ear plate 19. Finally, the workpiece is stably clamped by the combined action of the chuck block 3 and the workpiece clamping plate 16.

[0065] In terms of the use environment, the welding fixture of the present invention is particularly suitable for occasions where workpieces of various sizes and shapes need to be clamped. Its multi-level, adjustable clamping structure makes the fixture more flexible and changeable during operation, and can meet the clamping requirements of different workpieces.

[0066] In addition, the beneficial effects of this embodiment are also reflected in the following aspects: First, the clamping accuracy and stability of the clamp assembly are improved; second, the adaptability of the clamp to the workpiece is enhanced, and it can clamp more types of workpieces; third, through the driving method of the lifting screw 21 and the lifting slide bar 22, the precise lifting and lowering adjustment of the workpiece clamp 16 is achieved, thereby improving the convenience of operation.

[0067] In a further preferred embodiment of the present invention, one end of the four lifting screws 21 corresponding to the two bottoming blocks 5 respectively extends to the outside of the two chuck blocks 3, and a sprocket 23 is fixedly installed thereon, and the two sprockets 23 located on the same chuck block 3 are sleeved with the same chain 24.

[0068] In this embodiment, the four lifting screws 21 are extended to the outside of the chuck block 3 at one end corresponding to the two bottoming blocks 5, and sprockets 23 are fixedly installed on these extended parts. The two sprockets 23 on the same chuck block 3 are connected by the same chain 24 to form a synchronous transmission system.

[0069] This design enables that when one of the lifting screws 21 rotates, the other lifting screw 21 on the same chuck block 3 can be driven to rotate synchronously through the transmission effect of the chain 2 24. Since the lifting screws 21 on the two chuck blocks 3 are connected to the lifting screw 21 on the other chuck block 3 through the chain 1 11 (based on the previous description), the four lifting screws 21 in the entire clamp assembly will achieve synchronous rotation.

[0070] In terms of usage, the user only needs to operate one power source to simultaneously control the rotation of the four lifting screws 21, and then drive the eight workpiece clamping plates 16 to rise and fall synchronously through the transmission of the lifting slide bar 22 and the ear plate 19, so as to achieve uniform clamping or release of the workpiece. This synchronous transmission design not only simplifies the operation process, but also improves the stability and accuracy of clamping.

[0071] In a further preferred embodiment of the present invention, a pair of corresponding sides of the chuck blocks 3 are each provided with an avoidance notch 25 for avoiding the movement of the insertion rod 18, and the avoidance notch 25 is an arc-shaped opening.

[0072] In this embodiment, in order to optimize the structural design of the clamp assembly and improve the movement flexibility of the workpiece clamping plate 16, avoidance notches 25 are particularly provided on the corresponding sides of a pair of chuck blocks 3. The main function of these avoidance notches 25 is to provide sufficient space for the movement of the insertion rod 18 to ensure that it will not be hindered by the chuck block 3 when adjusting the position of the workpiece clamping plate 16.

[0073] Specifically, the avoidance notch 25 is designed as an arc-shaped opening, and the selection of this shape is based on the rotation and offset movement that may occur during the adjustment process of the insertion rod 18. The arc-shaped opening can better adapt to the movement trajectory of the insertion rod 18, reduce friction and collision, and thus extend the service life of the clamp assembly.

[0074] In a further preferred embodiment of the present invention, rubber pads 26 are fixedly mounted on the eight workpiece clamping plates 16 for contacting the welding workpieces.

[0075] In this embodiment, in order to improve the clamping stability and protection performance of the clamp assembly on the welding workpiece, rubber pads 26 are fixedly installed on the eight workpiece clamping plates 16. These rubber pads 26 serve as the contact interface between the workpiece clamping plates 16 and the welding workpiece, which can not only effectively increase the friction during the clamping process to prevent the workpiece from sliding or deflecting during the welding process, but also provide a certain protection for the workpiece surface to prevent the clamp assembly from directly causing scratches or damage to the workpiece.

[0076] In terms of usage, the user does not need to perform additional operations on the rubber pad 26. The user only needs to place the workpiece between the workpiece clamping plates 16 and adjust the position and clamping force of the workpiece clamping plates 16 to make the rubber pad 26 fit closely with the workpiece surface. The softness and elasticity of the rubber pad 26 can ensure stability and comfort during the clamping process.

[0077] In order to further improve the use effect of the device, in addition to the above scheme, this scheme also has the following embodiments:

[0078] In another embodiment of the present invention, two avoidance slides 27 are provided on the other side of the mouth-shaped assembly frame 2 relative to the lifting slide 4, and the two avoidance slides 27 are respectively equal to the two lifting slides 4. The mouth-shaped assembly frame 2 is fixedly installed with an assembly bracket plate 28 on one side of the avoidance slide 27, and two spline cylinders 29 are rotatably installed on the assembly bracket plate 28. Sprocket three 30 is fixedly sleeved on the two spline cylinders 29, and the same chain three 31 is sleeved on the two sprocket three 30. A conversion short shaft 32 is rotatably installed on the assembly bracket plate 28, and the conversion short shaft 32 and the corresponding spline cylinder 29 are fixedly sleeved with bevel gear two 33, and the two bevel gears two 33 are meshed, and the two spline cylinders 29 can be slidably installed A spline shaft 34 is installed, and a mounting frame 35 can be slidably installed on the two avoidance slides 27. The two mounting frames 35 are respectively fixedly connected to the two chuck blocks 3. A conversion long shaft 36 and an end shaft 37 can be rotatably installed on the two chuck blocks 3. The two end shafts 37 are respectively fixedly connected to the ends of the two spline shafts 34 that are away from each other. The two conversion long shafts 36 pass through the two avoidance slides 27 respectively. The two conversion long shafts 36 and the corresponding ends of the two end shafts 37 are fixedly installed with bevel gears three 38, and the corresponding two bevel gears three 38 are meshed with each other. The two conversion long shafts 36 and the corresponding ends of the two lifting screws 21 are fixedly installed with bevel gears four 39, and the two bevel gears four 39 are meshed with each other.

[0079] In this embodiment, the mouth-shaped assembly frame 2 is provided with two avoidance sliding openings 27 on the other side relative to the lifting sliding opening 4 , and the two avoidance sliding openings 27 are consistent in size with the lifting sliding opening 4 .

[0080] On one side of the avoidance slide 27, an assembly bracket plate 28 is fixedly installed, on which two spline cylinders 29 are rotatably installed. A sprocket 3 30 is fixedly sleeved on each spline cylinder 29, and they are connected by the same chain 3 31, so that the two spline cylinders 29 can rotate synchronously. In addition, a conversion short shaft 32 is also installed on the assembly bracket plate 28, and a bevel gear 2 33 is fixedly sleeved on the conversion short shaft 32 and the spline cylinder 29, and the two bevel gears 2 33 are meshed with each other to form a first-stage gear transmission system.

[0081] The spline shafts 34 can be slidably installed in the two spline cylinders 29, and the conversion long shaft 36 and the end shaft 37 are rotatably installed on the mounting frame 35 of the chuck block 3, wherein the end shaft 37 is fixedly connected to the end of the spline shaft 34 away from the spline cylinder 29, and the conversion long shaft 36 passes through the avoidance slide 27.

[0082] Cone gears 38 are fixedly mounted on the corresponding ends of the conversion long shaft 36 and the end shaft 37, and each pair of cone gears 38 mesh with each other to form a second-stage gear transmission system. In addition, a cone gear 4 39 is fixedly mounted on one end of the conversion long shaft 36 and the corresponding lifting screw 21, and the two cone gears 4 39 also mesh with each other, thereby transmitting the rotational motion of the conversion long shaft 36 to the lifting screw 21.

[0083] In terms of usage, the user can drive the conversion short shaft 32 to rotate through an external power source, and the conversion short shaft 32 uses the bevel gear 2 33 to drive one of the spline cylinders 29 to rotate, and the two spline cylinders 29 rotate synchronously through the transmission of the chain 3 31. Then the rotational motion is transmitted to the spline shaft 34, and the rotational motion is finally transmitted to the lifting screw 21 through the continuous transmission of the bevel gear 3 38 and the bevel gear 4 39, so as to realize the adjustment of the workpiece clamping plate 16.

[0084] In another embodiment of the present invention, a bottom frame 40 is fixedly installed at the bottom of the mouth-shaped assembly frame 2, and a synchronous long shaft 41 is rotatably installed on the bottom frame 40. A bevel gear five 42 is fixedly installed on one end of the synchronous long shaft 41 and the lifting drive shaft 8, and the two bevel gears five 42 are meshed with each other. A sprocket four 43 is fixedly sleeved on the end of the synchronous long shaft 41 corresponding to the conversion short shaft 32, and the two sprockets four 43 are sleeved with the same chain four 44.

[0085] In this embodiment, a bottom frame 40 is fixedly mounted at the bottom of the mouth-shaped assembly frame 2, and a synchronous long shaft 41 is rotatably mounted on the bottom frame 40. This design enables the synchronous long shaft 41 to serve as a key component in the power transmission system of the entire clamp assembly to achieve synchronous movement between different components.

[0086] The synchronous long shaft 41 and one end of the lifting drive shaft 8 are fixedly mounted with a bevel gear 5 42, and the two bevel gears 5 42 are meshed with each other. This design allows the synchronous long shaft 41 to rotate synchronously through the transmission effect of the bevel gear 5 42 when the lifting drive shaft 8 rotates.

[0087] In addition, the corresponding ends of the synchronous long shaft 41 and the conversion short shaft 32 are fixedly sleeved with a sprocket 43 and are connected by the same chain 44. In this way, when the synchronous long shaft 41 rotates, the conversion short shaft 32 can be driven to rotate synchronously through the transmission effect of the chain 44, and then the power is transmitted to the spline cylinder 29, the mounting frame 35, the chuck block 3 and the workpiece clamping plate 16 and other components to achieve the synchronous movement of the entire clamp assembly.

[0088] The beneficial effects of this embodiment are also reflected in the following aspects: first, the synchronization of the clamp assembly is enhanced, making the movement between the various components more coordinated and consistent; second, the transmission efficiency of the clamp assembly is improved and the power loss is reduced; third, the operation process is simplified and the operation difficulty and labor intensity are reduced.

[0089] To sum up, compared with the related art, the present device adopts a pair of chuck blocks 3 which are slidably installed in the mouth-shaped assembly frame 2. Driven by the lifting mechanism, they can slide closer or farther along the frame, thereby realizing the clamping and release of the welding workpiece; the lifting mechanism simplifies the cumbersome operation of traditional bolt tightening, and quickly and smoothly adjusts the position of the chuck block 3 by mechanical or hydraulic means, ensuring that the workpiece is evenly stressed during the clamping process, avoiding errors and inconveniences caused by manually tightening multiple bolts; in addition, the layout between the welding position connecting plate 1 and the clamp assembly ensures that the welding operation position is spacious and easy to operate; the welding position connecting plate 1 is located on one side of the bottom of the mouth-shaped assembly frame 2, and its top surface is not higher than the bottom inner wall of the frame. Such a design ensures the smooth progress of the welding operation without affecting people's operation and the maximum clamping of the workpiece.

[0090] The present invention also includes a method for using the welding fixture, comprising the following steps:

[0091] Step 1: insert the two workpieces to be welded from both sides of a set of clamp assemblies, that is, insert from both sides of two mouth-shaped assembly frames 2, so that they are located between the corresponding two chuck blocks 3, and the butt joint is located above the welding position connecting plate 1, and then drive the chuck block 3 close to the welding workpiece;

[0092] Step 2: Start the power motor 12, the output shaft of the power motor 12 drives the corresponding two bevel gears 13 to rotate, so that the corresponding lifting drive shaft 8 is driven to rotate. At this time, the sprocket 10 and the chain 11 are used to make the two lifting drive shafts 8 rotate synchronously. The lifting drive shaft 8 uses the threaded section 9 to drive the corresponding two lifting slides 6 to approach each other. The lifting slide 6 slides along the corresponding lifting slide 4 and drives the fixed bottoming block 5 and the chuck block 3 to slide until the rubber pad 26 contacts the welding workpiece and then pauses;

[0093] Step 3: Then adjust the inclination angle of the workpiece clamp 16 according to the needs of the welding workpiece. During adjustment, make the lifting screw 21 slide, and the corresponding two lifting screws 21 are synchronously driven by sprocket 23 and chain 24, so that the lifting screw 21 drives the lifting slide 22 to slide along the rectangular opening 20, and the lifting slide 22 drives the ear plate 19 to move, so that the insertion rod 18 slides along the adjustment slide 17, so that the workpiece clamp 16 drives the rotating support 15 to rotate along the rotating support shaft 14, and adjusts the inclination angle of the workpiece clamp 16. After appropriate adjustment, continue to start the power motor 12 until the workpiece clamp 16 and the rubber pad 26 are fixed to the welding workpiece. At this time, people can weld at the welding position connecting plate 1.

[0094] In the above steps, when the lifting drive shaft 8 rotates, the bevel gear five 42 is used to drive the synchronous long shaft 41 to rotate, and the synchronous long shaft 41 uses the sprocket four 43 and the chain four 44 to drive the conversion short shaft 32 to rotate synchronously. When the conversion short shaft 32 rotates, the bevel gear two 33 is used to drive the corresponding spline cylinder 29 to rotate. The two spline cylinders 29 are synchronously driven to rotate by the sprocket three 30 and the chain three 31, so that the spline shaft 34 rotates synchronously. When the spline shaft 34 rotates, the end shaft 37 is driven to rotate. The end shaft 37 uses the bevel gear three 38 to drive the conversion long shaft 36 to rotate. The conversion long shaft 36 uses the bevel gear four 39 to drive the corresponding lifting screw 21 to rotate. Then, the above-mentioned transmission method is used to make the lifting and lowering of the chuck block 3 and the adjustment of the workpiece clamping plate 16 synchronous. The overall automation is high and the manual participation is reduced.

[0095] During the adjustment process, as the chuck block 3 slides, the chuck block 3 drives the mounting frame 35 to adjust its position synchronously. While the end shaft 37 and the spline shaft 34 rotate, the mounting frame 35 drives the spline shaft 34 to slide along the spline tube 29 to adaptively adjust the length, thereby ensuring smoothness during the transmission process.

Claims

1. A welding fixture, characterized in that: include: A welding position connecting plate and a set of clamp components, wherein a set of the clamp components are respectively fixedly mounted on two opposite sides of the welding position connecting plate and are used to clamp the welding workpiece; The clamp assembly comprises a mouth-shaped assembly frame, a pair of chuck blocks and a lifting mechanism, wherein the mouth-shaped assembly frame is fixedly mounted on one side of the welding position connecting plate, the pair of chuck blocks can be slidably mounted in the mouth-shaped assembly frame, and the lifting mechanism is arranged on the mouth-shaped assembly frame, and is used to drive the pair of chuck blocks to slide closer or farther along the mouth-shaped assembly frame; Wherein, a welding operation position is provided between the welding position connecting plate and a set of clamp components, the welding position connecting plate is located on one side of the bottom of the mouth-shaped assembly frame, and the top surface of the welding position connecting plate is not higher than the bottom inner wall surface of the mouth-shaped assembly frame; The lifting mechanism comprises two lifting slides provided on the same side of the mouth-shaped assembly frame, the two lifting slides are respectively arranged corresponding to the two chuck blocks, and the two chuck blocks are fixedly installed with bottoming blocks on the sides away from each other, which can contact or separate from the inner wall of the mouth-shaped assembly frame, and lifting slides can be slidably installed in the two lifting slides, and the same side of the two lifting slides is respectively fixedly connected with the two bottoming blocks, and the mouth-shaped assembly frame is fixedly installed with an axis seat plate on one side of the lifting slide, and a lifting drive shaft is rotatably installed on the axis seat plate, and the setting direction of the lifting drive shaft is consistent with the sliding direction of the chuck block, and the lifting drive shaft has two threaded sections with opposite thread rotation directions, and the two threaded sections are respectively connected with the two lifting slides by threaded driving; A sprocket 1 is fixedly sleeved on the lifting drive shaft of a group of the clamp assemblies, and the same chain 1 is sleeved on the two sprockets 1; A power motor is fixedly mounted on one of the mouth-shaped assembly frames on a set of the clamp assemblies, and a bevel gear 1 is fixedly mounted on the output shaft of the power motor and the corresponding lifting drive shaft, and the two bevel gears 1 are meshed with each other; The two ends of the four rotating support shafts are hingedly installed on the four rotating support shafts, and the eight rotating supports are respectively located at the two sides of the pair of the chuck blocks and are fixedly installed with a workpiece clamping plate, and the eight workpiece clamping plates are respectively formed into a group in pairs, and the two groups form a large group, and the two large groups of workpiece clamping plates are respectively located on the side corresponding to each other of the pair of the chuck blocks for clamping the workpiece, and the eight workpiece clamping plates are provided with adjusting slides, and the same insertion rod is installed through the two adjusting slides of each corresponding group of the four groups, and the two ends of the four insertion rods are hingedly installed with ear plates, and the pair of the chuck blocks are provided with two rectangular openings, and the four rectangular openings can be rotatably installed with lifting screws, and the four lifting screws are threadedly driven to be installed with lifting slides, and the four lifting slides can be slidably passed through the four rectangular openings, and the two ends of the four lifting slides are respectively hingedly connected to the corresponding ear plates; The mouth-shaped assembly frame is provided with two avoidance slides on the other side relative to the lifting slide, and the two avoidance slides are respectively equal to the two lifting slides. The mouth-shaped assembly frame is fixedly installed with an assembly bracket plate on one side of the avoidance slide, and two spline cylinders are rotatably installed on the assembly bracket plate. Sprocket wheels three are fixedly sleeved on the two spline cylinders, and the same chain three is sleeved on the two sprocket wheels three. A conversion short shaft is rotatably installed on the assembly bracket plate, and a bevel gear two is fixedly sleeved on the conversion short shaft and the corresponding spline cylinder, and the two bevel gears two are meshed with each other, and spline shafts can be slidably installed on the two spline cylinders. , a mounting bracket can be slidably mounted on the two avoidance slides, and the two mounting brackets are respectively fixedly connected to the two chuck blocks, and a conversion long shaft and an end shaft can be rotatably mounted on the two chuck blocks, and the two end shafts are respectively fixedly connected to one end of the two spline shafts away from each other, and the two conversion long shafts respectively pass through the two avoidance slides, and the two conversion long shafts and the corresponding ends of the two end shafts are fixedly mounted with bevel gears three, and the corresponding two bevel gears are meshed with three phases, and the two conversion long shafts and one end of the corresponding two lifting screws are fixedly mounted with bevel gears four, and the two bevel gears are meshed with four phases; A bottom frame is fixedly installed at the bottom of the mouth-shaped assembly frame, and a synchronous long shaft is rotatably installed on the bottom frame. A bevel gear five is fixedly installed on one end of the synchronous long shaft and the lifting drive shaft, and the two bevel gears five are meshed with each other. A sprocket four is fixedly sleeved on one end of the synchronous long shaft corresponding to the conversion short shaft, and the same chain four is sleeved on the two sprockets four.

2. The welding fixture according to claim 1, characterized in that: The opening direction of the lifting slide is consistent with the sliding direction of the chuck block, and the opening width of the lifting slide is smaller than the width of the chuck block.

3. The welding fixture according to claim 1, characterized in that: One end of the four lifting screw rods corresponding to the two bottoming blocks respectively extends outside the two chuck blocks and is fixedly installed with a sprocket 2. The two sprockets 2 located on the same chuck block are sleeved with the same chain 2.

4. The welding fixture according to claim 1, characterized in that: A corresponding side of a pair of the chuck blocks is provided with an avoidance notch for avoiding the movement of the insertion rod, and the avoidance notch is an arc-shaped opening.

5. The welding fixture according to claim 1, characterized in that: Rubber pads are fixedly mounted on the eight workpiece clamping plates for contacting the welding workpieces.

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