Welding machine clamping jig capable of turning over at multiple angles

Abstract

The utility model discloses a welding machine clamping jig capable of turning over at multiple angles, which belongs to the field of welding technology and comprises a base station. An angle adjusting self-locking mechanism used for conducting multi-angle adjusting and locking on a workpiece to guarantee that the welding face is kept horizontal is installed on the base table. The angle adjusting self-locking mechanism is provided with a plurality of workpiece clamping protection mechanisms which are used for clamping workpieces and preventing the workpieces from being damaged by too large clamping force at the same time. The angle adjusting self-locking mechanism comprises a rotating assembly, an angle adjusting assembly, a step-by-step adjusting assembly and a locking and unlocking assembly. By means of the mode, it can be guaranteed that the welding face is always horizontal when a special-shaped workpiece is welded, welding is convenient, the workpiece can be prevented from being damaged due to the fact that clamping force is too large in the workpiece clamping process, and therefore the yield is improved.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, specifically to a welding machine clamping fixture that can be rotated at multiple angles. Background Technology

[0002] Welding machine clamping fixtures are tools used to fix workpieces, maintain their position, provide stable support, and assist in positioning during the welding process. In order to meet the needs of different workpieces, modern welding machine clamping fixtures often adopt a modular design, which can flexibly adjust the clamping form and clamping force, thereby adapting to various welding processes and workpiece shapes, and improving the versatility and multi-functionality of the tooling.

[0003] Chinese patent CN219425932U discloses a dual-station laser welding machine, including a work plate, a first-speed chain for transporting a jig, a laser welding head, a robotic arm for moving the laser welding head, a lifting assembly for lifting the jig from the first-speed chain, and a dust extraction assembly for collecting dust generated during laser welding. Two lifting stations are provided along the length of the first-speed chain, and the work plate is provided with a lifting assembly for lifting the jig away from the lifting stations. The lifting assembly includes a blocking plate that fixes the jig to the lifting station along the moving direction of the first-speed chain, a lifting unit for lifting the jig, and a clamping plate that cooperates with the lifting unit to clamp the jig. The lifting unit is located below the lifting station, and the clamping plate is located above the lifting station. The machine uses a double-speed chain for feeding, and the two lifting assemblies lift the workpiece to the respective station, allowing the double-speed chain to transport and lift another workpiece while one workpiece is being processed, thus improving the workpiece conveying and positioning efficiency of the welding machine. However, this device still has the following problems:

[0004] 1. Various irregularly shaped workpieces, such as V-shaped ones, are present during welding; the device cannot fix such workpieces and therefore cannot guarantee that the welding surface is level.

[0005] 2. When clamping and fixing workpieces, it is easy to damage the workpieces when dealing with materials with poor hardness.

[0006] Based on this, this utility model designs a welding machine clamping fixture that can be flipped at multiple angles to solve the above problems. Utility Model Content

[0007] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a welding machine clamping fixture that can be rotated at multiple angles.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A welding machine clamping fixture that can be rotated at multiple angles includes a base.

[0010] The base is equipped with an angle adjustment self-locking mechanism for multi-angle adjustment and locking of the workpiece to ensure that the welding surface remains horizontal.

[0011] The angle adjustment self-locking mechanism is equipped with multiple workpiece clamping protection mechanisms for clamping the workpiece and preventing excessive clamping force from damaging the workpiece.

[0012] The angle adjustment self-locking mechanism includes a rotation component, an angle adjustment component, a step-by-step adjustment component, and a locking / unlocking component; both the rotation component and the angle adjustment component are connected to the base; two sets of angle adjustment components are symmetrically distributed below the rotation component; the rotation component is connected to the two sets of angle adjustment components; both the step-by-step adjustment component and the locking / unlocking component are connected to the angle adjustment component; the step-by-step adjustment component and the locking / unlocking component are connected; the rotation component is used to place and rotate the workpiece; the angle adjustment component is used to adjust the rotation angle of the rotation component; the angle adjustment component is used to lock the rotation angle; the locking / unlocking component is used to unlock or release the step-by-step adjustment component from locking the angle adjustment component; the rotation component is connected to the workpiece clamping and protection mechanism.

[0013] Furthermore, the rotating assembly includes a rotating placement plate and a rotating shaft; the left end of the rotating placement plate is fixedly connected to the rotating shaft, and both the front and rear ends of the rotating shaft are rotatably connected to the upper left side of the base; the rotating placement plate is connected to an angle adjustment assembly; and the rotating placement plate is connected to a workpiece clamping and protection mechanism.

[0014] Furthermore, the angle adjustment assembly includes a first connecting rod, a second connecting rod, and a sliding groove; the upper end of the first connecting rod is hinged to the rotating placement plate, the first connecting rod has a sliding groove, and the second connecting rod is slidably connected to the first connecting rod through the sliding groove; both the first and second connecting rods are connected to the step-by-step adjustment assembly; both the first and second connecting rods are connected to the locking and unlocking assembly.

[0015] Furthermore, the step-by-step adjustment assembly includes a ratchet, a cam, a connecting rod, and a second rotating shaft; a groove is provided on the first connecting rod, and a ratchet is fixedly installed in the groove; cams are symmetrically arranged at both ends of the second connecting rod, and the cams are rotatably connected to the second connecting rod through bearings; the left end of the cam is fixedly connected to the connecting rod, and the left end of the connecting rod is rotatably connected to the second rotating shaft.

[0016] Furthermore, the locking and unlocking assembly includes a spring plate; the upper end of the first connecting rod is provided with a locking groove for locking the ratchet to the second rotating shaft, and the lower end of the first connecting rod is provided with an unlocking groove for releasing the ratchet from locking the second rotating shaft; spring plates are symmetrically arranged at the front and rear ends of the second connecting rod, and the spring plates are fixedly connected to the second connecting rod through a connector; the cam is provided with a clearance groove and a retaining groove; the left end of the spring plate abuts against the clearance groove and the retaining groove.

[0017] Furthermore, the workpiece clamping and protection mechanism includes a pressing component, a thickness control component, and a limiting sliding component; two limiting sliding components are symmetrically installed on the rotating placement plate, and the pressing component is connected to the thickness control component; the pressing component is connected to the limiting sliding component; the thickness control component is connected to the rotating placement plate; the pressing component is used to press down and clamp the workpiece; the thickness control component is used to prevent excessive clamping force from damaging the workpiece according to the workpiece thickness; the limiting sliding component is used to control the movement of the pressing component and the thickness control component.

[0018] Furthermore, the pressing assembly includes a lead screw and a nut; the lower end of the lead screw is fixedly connected to the sliding block, the lead screw and the nut are threadedly connected by a threaded sleeve, and both the lead screw and the nut are connected to the thickness control assembly.

[0019] Furthermore, the thickness control component includes a lower pressure block, a thickness adjustment block, and a rotating shaft three; the lower pressure block is slidably connected to the lead screw; the upper end of the lower pressure block is rotatably connected to the nut via a bearing; the side of the lower pressure block away from the workpiece is rotatably connected to the rotating shaft three, and the rotating shaft three is fixedly connected to the thickness adjustment block; the lower end of the thickness adjustment block abuts against the rotating placement plate; the distance between the rotating shaft three and the rotating placement plate can be changed by rotating the thickness adjustment block around the rotating shaft three.

[0020] Compared with the prior art, the advantages of this utility model are as follows: 1. This utility model can ensure that the welding surface is always horizontal when welding irregularly shaped workpieces (such as V-shape), which facilitates welding;

[0021] 2. This utility model can prevent excessive clamping force from damaging the workpiece during the workpiece clamping process, thereby improving the yield rate. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This utility model relates to a three-dimensional welding machine clamping fixture that can be rotated at multiple angles. Figure 1 ;

[0024] Figure 2 This is a front view of a welding machine clamping fixture that can be rotated at multiple angles according to the present invention;

[0025] Figure 3 This utility model relates to a three-dimensional portion of a welding machine clamping fixture that can be rotated at multiple angles. Figure 1 ;

[0026] Figure 4 This utility model relates to a three-dimensional portion of a welding machine clamping fixture that can be rotated at multiple angles. Figure 2 ;

[0027] Figure 5 for Figure 1 Enlarged view of point A in the middle.

[0028] The labels in the diagram represent:

[0029] 1. Base; 2. Angle adjustment self-locking mechanism; 21. Rotating assembly; 211. Rotating placement plate; 212. Rotating shaft one; 22. Angle adjustment assembly; 221. Connecting rod one; 222. Connecting rod two; 223. Slide groove; 23. Step-by-step adjustment assembly; 231. Groove; 232. Ratchet; 233. Cam; 234. Connecting rod; 235. Rotating shaft two; 24. Locking and unlocking assembly; 241. Locking groove; 242. Unlocking groove; 243. Spring plate; 244. Clearance groove; 245. Slot; 3. Workpiece clamping and protection mechanism; 31. Pressing assembly; 311. Lead screw; 312. Nut; 32. Thickness control assembly; 321. Pressing block; 322. Thickness adjustment block; 323. Rotating shaft three; 33. Sliding block; 34. Limiting slide groove. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0031] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0032] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-5 A welding machine clamping fixture that can be flipped at multiple angles includes a base 1;

[0033] The base 1 is equipped with an angle adjustment self-locking mechanism 2 for multi-angle adjustment and locking of the workpiece, so that the welding surface remains horizontal.

[0034] The angle adjustment self-locking mechanism 2 is equipped with multiple workpiece clamping protection mechanisms 3 for clamping the workpiece and preventing excessive clamping force from damaging the workpiece.

[0035] The angle adjustment self-locking mechanism 2 includes a rotating component 21, an angle adjustment component 22, a step-by-step adjustment component 23, and a locking / unlocking component 24. Both the rotating component 21 and the angle adjustment component 22 are connected to the base 1. Two sets of angle adjustment components 22 are symmetrically distributed below the rotating component 21. The rotating component 21 is connected to both sets of angle adjustment components 22. Both the step-by-step adjustment component 23 and the locking / unlocking component 24 are connected to the angle adjustment component 22. The rotating component 21 is used to place and rotate the workpiece. The angle adjustment component 22 is used to adjust the rotation angle of the rotating component 21. The angle adjustment component 22 is used to lock the rotation angle. The locking / unlocking component 24 is used to unlock or release the step-by-step adjustment component 23 from locking the angle adjustment component 22. The rotating component 21 is connected to the workpiece clamping and protection mechanism 3.

[0036] In this utility model, the operator uses the workpiece clamping and protection mechanism 3 to clamp the workpiece above the rotating component 21, while preventing the workpiece from being damaged by clamping; then, the angle of the workpiece is adjusted by pulling the angle adjustment component 22 to make the welding surface of the workpiece horizontal, while the step-by-step adjustment component 23 locks the angle of the workpiece. When it is necessary to unlock, the locking and unlocking component 24 is used to unlock the step-by-step adjustment component 23, so as to keep the welding surface of the irregular workpiece horizontal for easy welding.

[0037] The rotating assembly 21 includes a rotating placement plate 211 and a rotating shaft 212; the left end of the rotating placement plate 211 is fixedly connected to the rotating shaft 212, and both the front and rear ends of the rotating shaft 212 are rotatably connected to the upper left side of the base 1; the rotating placement plate 211 is connected to the angle adjustment assembly 22; the rotating placement plate 211 is connected to the workpiece clamping and protection mechanism 3.

[0038] The angle adjustment assembly 22 includes a first connecting rod 221, a second connecting rod 222, and a sliding groove 223. The upper end of the first connecting rod 221 is hinged to the rotating placement plate 211. The first connecting rod 221 has a sliding groove 223. The second connecting rod 222 is slidably connected to the first connecting rod 221 through the sliding groove 223. Both the first connecting rod 221 and the second connecting rod 222 are connected to the step-by-step adjustment assembly 23. Both the first connecting rod 221 and the second connecting rod 222 are connected to the locking and unlocking assembly 24.

[0039] The step-by-step adjustment assembly 23 includes a ratchet 232, a cam 233, a connecting rod 234, and a second rotating shaft 235; a groove 231 is provided on the first connecting rod 221, and a ratchet 232 is fixedly installed in the groove 231; cams 233 are symmetrically arranged at both ends of the second connecting rod 222, and the cams 233 are rotatably connected to the second connecting rod 222 through bearings; the left end of the cam 233 is fixedly connected to the connecting rod 234, and the left end of the connecting rod 234 is rotatably connected to the second rotating shaft 235;

[0040] The locking and unlocking assembly 24 includes a spring plate 243; the upper end of the first connecting rod 221 is provided with a locking groove 241 for locking the ratchet 232 against the second rotating shaft 235, and the lower end of the first connecting rod 221 is provided with an unlocking groove 242 for releasing the ratchet 232 from locking the second rotating shaft 235; the front and rear ends of the second connecting rod 222 are symmetrically provided with spring plates 243, and the spring plates 243 are fixedly connected to the second connecting rod 222 through a connector; the cam 233 is provided with a clearance groove 244 and a retaining groove 245; the left end of the spring plate 243 abuts against the clearance groove 244 and the retaining groove 245;

[0041] In this invention, the operator uses the workpiece clamping and protection mechanism 3 to clamp the workpiece above the rotating assembly 21, while preventing damage to the workpiece. Then, the operator pulls the rotating placement plate 211 to rotate around the first rotating shaft 212. At this time, under the action of the ratchet 232, the second rotating shaft 235 can only move downwards for a limit. When the second rotating shaft 235 moves downwards, it drives the cam 233 to rotate through the connecting rod 234. At this time, the upper end of the connecting rod 234 abuts against the cam 233 in the clearance groove 244. When the second rotating shaft 235 moves into the unlocking groove 242, the cam 233 rotates. As the angle increases, the left end of the spring plate 243 engages with the slot 245 on the cam 233; at this time, the position of the rotating shaft 235 is locked, and the rotating shaft 235 can reciprocate within the groove 231 without touching the ratchet 232; then, when the rotating shaft 235 moves upward into the locking groove 241, the locking groove 241 drives the rotating shaft 235 to rotate, and the rotating shaft 235 drives the spring plate 243 to disengage from the slot 245; at this time, under the limiting action of the ratchet 232, the rotating shaft 235 can only move downward; thus achieving adjustment and self-locking of the angle of the workpiece welding surface;

[0042] The workpiece clamping and protection mechanism 3 includes a pressing component 31, a thickness control component 32, and a sliding block 33. Two symmetrically arranged limiting grooves 34 are provided on the rotating placement plate 211. The sliding block 33 is slidably connected to the rotating placement plate 211 via the limiting grooves 34. The pressing component 31 is connected to the thickness control component 32. The pressing component 31 is also connected to the sliding block 33. The thickness control component 32 is connected to the rotating placement plate 211. The pressing component 31 is used to press down and clamp the workpiece. The thickness control component 32 is used to prevent excessive clamping force from damaging the workpiece based on its thickness. The sliding block 33 is used to control the movement of the pressing component 31 and the thickness control component 32.

[0043] The pressing component 31 includes a lead screw 311 and a nut 312; the lower end of the lead screw 311 is fixedly connected to the sliding block 33, the lead screw 311 and the nut 312 are connected by a threaded sleeve, and both the lead screw 311 and the nut 312 are connected to the thickness control component 32.

[0044] The thickness control component 32 includes a lower pressure block 321, a thickness adjustment block 322, and a rotating shaft 323. The lower pressure block 321 is slidably connected to the lead screw 311. The upper end of the lower pressure block 321 is rotatably connected to the nut 312 via a bearing. The side of the lower pressure block 321 away from the workpiece is rotatably connected to the rotating shaft 323, and the rotating shaft 323 is fixedly connected to the thickness adjustment block 322. The lower end of the thickness adjustment block 322 abuts against the rotating placement plate 211. By rotating the thickness adjustment block 322 around the rotating shaft 323, the distance between the rotating shaft 323 and the rotating placement plate 211 can be changed, thereby protecting workpieces of different thicknesses.

[0045] In this utility model, the operator places the workpiece on the rotating placement plate 211, then moves the sliding block 33 along the limiting slide groove 34 to the position where the workpiece needs to be locked, and then rotates the thickness adjustment block 322 according to the thickness of the workpiece so that the thickness of the thickness adjustment block 322 between the workpiece and the rotating placement plate 211 is equal to the thickness of the workpiece. Then, the nut 312 is turned, and the nut 312 drives the lower pressure block 321 to press down and abut against the workpiece. The other side of the lower pressure block 321 abuts against the workpiece, and the thickness adjustment block 322 abuts against the rotating placement plate 211, thereby protecting the workpiece and preventing the workpiece from being damaged due to excessive clamping force.

[0046] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A welding machine clamping fixture that can be rotated at multiple angles, comprising a base (1), characterized in that: It also includes an angle adjustment self-locking mechanism (2) and a workpiece clamping protection mechanism (3); The base (1) is equipped with an angle adjustment self-locking mechanism (2) for multi-angle adjustment and locking of the workpiece to ensure that the welding surface remains horizontal; The angle adjustment self-locking mechanism (2) is equipped with multiple workpiece clamping protection mechanisms (3) for clamping the workpiece and preventing excessive clamping force from damaging the workpiece. The angle adjustment self-locking mechanism (2) includes a rotating component (21), an angle adjustment component (22), a step-by-step adjustment component (23), and a locking / unlocking component (24); the rotating component (21) and the angle adjustment component (22) are both connected to the base (1); two sets of angle adjustment components (22) are symmetrically distributed below the rotating component (21); the rotating component (21) is connected to the two sets of angle adjustment components (22); the step-by-step adjustment component (23) and the locking / unlocking component (24) are both connected to the angle adjustment component (22); the step-by-step adjustment component (23) and the locking / unlocking component (24) are connected; the rotating component (21) is used to place and rotate the workpiece; the angle adjustment component (22) is used to adjust the rotation angle of the rotating component (21); the angle adjustment component (22) is used to lock the rotation angle; the locking / unlocking component (24) is used to open or release the locking of the step-by-step adjustment component (23) on the angle adjustment component (22); the rotating component (21) is connected to the workpiece clamping protection mechanism (3).

2. The welding machine clamping fixture capable of multi-angle flipping according to claim 1, characterized in that, The rotating assembly (21) includes a rotating placement plate (211) and a rotating shaft (212); the left end of the rotating placement plate (211) is fixedly connected to the rotating shaft (212), and both the front and rear ends of the rotating shaft (212) are rotatably connected to the upper left side of the base (1); the rotating placement plate (211) is connected to the angle adjustment assembly (22); the rotating placement plate (211) is connected to the workpiece clamping and protection mechanism (3).

3. The welding machine clamping fixture capable of multi-angle flipping according to claim 2, characterized in that, The angle adjustment component (22) includes a first connecting rod (221), a second connecting rod (222), and a sliding groove (223); the upper end of the first connecting rod (221) is hinged to the rotating placement plate (211), and the first connecting rod (221) is provided with a sliding groove (223). The second connecting rod (222) is slidably connected to the first connecting rod (221) through the sliding groove (223); both the first connecting rod (221) and the second connecting rod (222) are connected to the step-by-step adjustment component (23); both the first connecting rod (221) and the second connecting rod (222) are connected to the locking and unlocking component (24).

4. The welding machine clamping fixture capable of multi-angle flipping according to claim 3, characterized in that, The step-by-step adjustment assembly (23) includes a ratchet (232), a cam (233), a connecting rod (234), and a second rotating shaft (235); a groove (231) is provided on the first connecting rod (221), and a ratchet (232) is fixedly installed in the groove (231); cams (233) are symmetrically arranged at the front and rear ends of the second connecting rod (222), and the cams (233) are rotatably connected to the second connecting rod (222) through bearings; the left end of the cam (233) is fixedly connected to the connecting rod (234), and the left end of the connecting rod (234) is rotatably connected to the second rotating shaft (235).

5. The welding machine clamping fixture capable of multi-angle flipping according to claim 4, characterized in that, The locking and unlocking assembly (24) includes a spring plate (243); the upper end of the first connecting rod (221) is provided with a locking groove (241) for locking the ratchet (232) against the second rotating shaft (235), and the lower end of the first connecting rod (221) is provided with an unlocking groove (242) for releasing the ratchet (232) from locking the second rotating shaft (235); the front and rear ends of the second connecting rod (222) are symmetrically provided with spring plates (243), and the spring plates (243) are fixedly connected to the second connecting rod (222) through a connector; the cam (233) is provided with a clearance groove (244) and a slot (245); the left end of the spring plate (243) abuts against the clearance groove (244) and the slot (245).

6. The welding machine clamping fixture capable of multi-angle flipping according to claim 2, characterized in that, The workpiece clamping and protection mechanism (3) includes a pressing component (31), a thickness control component (32), and a limiting sliding component; two limiting sliding components are symmetrically installed on the rotating placement plate (211), and the pressing component (31) is connected to the thickness control component (32); the pressing component (31) is connected to the limiting sliding component; the thickness control component (32) is connected to the rotating placement plate (211); the pressing component (31) is used to press down and clamp the workpiece; the thickness control component (32) is used to prevent excessive clamping force from damaging the workpiece according to the workpiece thickness; the limiting sliding component is used to control the movement of the pressing component (31) and the thickness control component (32).

7. The welding machine clamping fixture capable of multi-angle flipping according to claim 6, characterized in that, The pressing assembly (31) includes a lead screw (311) and a nut (312); the lower end of the lead screw (311) is fixedly connected to the sliding block (33), the lead screw (311) and the nut (312) are connected by a threaded sleeve, and both the lead screw (311) and the nut (312) are connected to the thickness control assembly (32).

8. The welding machine clamping fixture capable of multi-angle flipping according to claim 7, characterized in that, The thickness control component (32) includes a lower pressure block (321), a thickness adjustment block (322), and a rotating shaft three (323); the lower pressure block (321) is slidably connected to the lead screw (311); the upper end of the lower pressure block (321) is rotatably connected to the nut (312) through a bearing; the side of the lower pressure block (321) away from the workpiece is rotatably connected to the rotating shaft three (323), and the rotating shaft three (323) is fixedly connected to the thickness adjustment block (322); the lower end of the thickness adjustment block (322) abuts against the rotating placement plate (211); the distance between the rotating shaft three (323) and the rotating placement plate (211) can be changed by rotating the thickness adjustment block (322) around the rotating shaft three (323).

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