Welding workpiece clamping tool

Abstract

The utility model provides a welding workpiece clamping tool which comprises a bottom plate, a bearing jig and a clamping component, and the bearing jig is arranged on the bottom plate and used for bearing a workpiece; the clamping component comprises a lifting driving module, a rotating driving module and a clamping jaw assembly, the lifting driving module is arranged on the bottom plate, the rotating driving module is arranged on a movable component of the lifting driving module, and the clamping component is connected to the movable component of the rotating driving module and located above the bearing jig; the lifting driving module is used for driving the clamping jaw assembly to ascend and descend so as to drive the clamping component to clamp a to-be-welded workpiece from the bearing jig, lift the to-be-welded workpiece to a preset welding station and place the welded workpiece back to the bearing jig; the rotary driving module is used for driving the clamping jaw assembly to rotate vertically in the welding process so as to drive the workpiece to rotate synchronously. According to the welding workpiece clamping tool, automatic turning over of the workpiece is achieved, and therefore the welding efficiency of the workpiece is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser equipment production field, concretely speaking, a kind of welding workpiece clamping tool. BACKGROUND

[0002] Laser welding is the local heating in small area to material using high-energy laser, and the energy of laser radiation spreads to the interior of material by heat conduction, and it forms specific molten pool after material is melted, it is a new type of welding method, mainly for the welding of thin-walled material, precision parts.

[0003] In the production process, laser welding needs to be carried out on each side of some square workpieces (such as oil tanks). The existing laser welding method is to place the workpiece on the machine table, and the laser welding head installed on the driving module is used to carry out laser welding on the workpiece. After completing the laser welding on the current upward surface of the workpiece, the workpiece is turned over manually to carry out laser welding on another surface of the workpiece. The existing laser welding method needs manual adjustment of the orientation of the workpiece, and the welding efficiency is low. SUMMARY

[0004] In order to solve the above technical problems existing in the existing laser cleaning machine, the utility model provides a welding workpiece clamping tool, and the specific technical scheme is as follows:

[0005] A welding workpiece clamping tool, comprising a base plate, a bearing jig and a clamping component, wherein:

[0006] The bearing jig is arranged on the base plate and is used to bear the workpiece;

[0007] The clamping component comprises a lifting driving module, a rotating driving module and a clamping jaw assembly, wherein the lifting driving module is arranged on the base plate, the rotating driving module is arranged on the movable part of the lifting driving module, and the clamping component is connected to the movable part of the rotating driving module and located above the bearing jig;

[0008] The lifting driving module is used to drive the clamping jaw assembly to lift, so as to drive the clamping component to clamp the workpiece to be welded from the bearing jig, lift the workpiece to be welded to a predetermined welding station, and put the workpiece after welding back to the bearing jig;

[0009] The rotating driving module is used to drive the clamping jaw assembly to rotate vertically during welding, so as to drive the workpiece to rotate synchronously.

[0010] In some embodiments, the bearing jig comprises a plurality of support rods arranged on the base plate and a bearing plate fixed on the plurality of support rods, and a slot for avoiding the clamping part is arranged at the edge of one end of the bearing plate.

[0011] In some embodiments, the clamping jaw assembly comprises a clamping jaw cylinder, a first clamping jaw and a second clamping jaw, wherein: the clamping jaw cylinder is connected to the movable part of the rotary drive module; the first clamping jaw and the second clamping jaw are connected to two driving ends of the clamping jaw cylinder, a clamping space is formed between the first clamping jaw and the second clamping jaw, and the clamping jaw cylinder drives the first clamping jaw and the second clamping jaw to clamp or release the workpiece in the clamping space.

[0012] In some embodiments, the clamping jaw assembly further comprises a first limiting plate and a second limiting plate which are connected to the two side walls of the cylinder body of the clamping jaw cylinder, and the first clamping jaw, the second clamping jaw, the first limiting plate and the second limiting plate jointly form the clamping space.

[0013] In some embodiments, the first clamping jaw is connected to one driving end of the clamping jaw cylinder through a first connecting block, the second clamping jaw is connected to the other driving end of the clamping jaw cylinder through a second connecting block, and the end of at least one of the first connecting block and the second connecting block is provided with a sensing assembly which is triggered to generate a sensing signal when the workpiece enters the clamping space.

[0014] In some embodiments, the inner side walls of the first clamping jaw and the second limiting plate are provided with anti-skid lines or anti-skid pads.

[0015] In some embodiments, the lifting drive module comprises a column, a first motor, a lead screw, a nut, a sliding rail and a sliding block, wherein: the lower end of the column is fixedly installed on the bottom plate, the sliding rail is arranged on the column in the vertical direction, and the sliding block is slidingly connected to the sliding rail; the first motor is arranged on the top of the column, the lead screw is arranged on the column in the vertical direction, the upper end of the lead screw is connected to the driving end of the first motor, the nut is screwed on the lead screw and fixedly connected to the sliding block; and the rotary drive module is arranged on the sliding block.

[0016] In some embodiments, the rotary drive module comprises a second motor, a driving pulley, a driven pulley, a synchronous belt and a first connecting bracket, wherein: the second motor is arranged on the sliding block, the driving pulley is connected to the driving end of the second motor, the driven pulley is connected to the sliding block through a rotary bearing, the first connecting bracket is connected to the end face of the driven pulley, and the clamping jaw assembly is connected to the first connecting bracket; the synchronous belt is sleeved on the driving pulley and the driven pulley; the second motor drives the driven pulley to rotate through the driving pulley and the synchronous belt, and the driven pulley drives the first connecting bracket and the clamping jaw assembly to rotate vertically when rotating.

[0017] In some embodiments, the rotary drive module comprises a DD motor and a second connecting bracket, wherein: the DD motor is installed on the sliding block, the second connecting bracket is connected to the mounting face of the DD motor, and the clamping jaw assembly is connected to the second connecting bracket; the DD motor drives the first connecting bracket to rotate vertically to drive the clamping jaw assembly to rotate synchronously.

[0018] The clamping jaw assembly is driven to descend by the lifting driving module, and after clamping the workpiece to be welded from the supporting fixture, the workpiece is lifted to the predetermined welding station to implement laser welding. During the welding process, after the laser welding of the current upward surface is completed, the clamping jaw assembly is driven to implement automatic turning of the workpiece by the rotating driving module, so that another surface of the workpiece to be welded faces upward. When all the side surfaces of the workpiece are completed, the clamping jaw assembly is driven to descend again by the lifting driving module to put the workpiece completed welding back to the supporting fixture.

[0019] Compared with the traditional welding method, the welding workpiece clamping tool realizes automatic turning of the workpiece, thereby improving the welding efficiency of the workpiece. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic view of the welding workpiece clamping tool in the application from one perspective.

[0021] Figure 2 It is a structural schematic view of the clamping jaw assembly in one embodiment of the application.

[0022] Figure 3 It is a structural schematic view of the clamping jaw assembly in another embodiment of the application.

[0023] Figure 4 It is a structural schematic view of the welding workpiece clamping tool in the application from another perspective.

[0024] Figures 1 to 4 It comprises:

[0025] The bottom plate 1;

[0026] The supporting fixture 2: the supporting rod 21, the supporting plate 22, and the notch 23.

[0027] The clamping part 3: the lifting driving module 31, the rotating driving module 32, the clamping jaw assembly 33, the clamping jaw cylinder 331, the first clamping jaw 332, the second clamping jaw 333, the first limiting plate 334, the second limiting plate 335, the first connecting block 336, the second connecting block 337, the vertical column 311, the first motor 312, the sliding block 313, the second motor 321, the driving pulley 322, the synchronous belt 323, and the first connecting support 324. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0029] As described in the background section, at present, in the laser welding process of the various side surfaces of some square workpieces, after the laser welding of the current upward surface of the workpiece is completed, the workpiece needs to be turned over manually to implement the laser welding of another surface of the workpiece. The existing laser welding method needs to manually adjust the orientation of the workpiece, and the welding efficiency is low.

[0030] Therefore, the present application provides a welding workpiece clamping tool which can automatically turn over the workpiece in the laser welding process, thereby improving the laser welding efficiency of the laser welding device on the workpiece.

[0031] As shown in Figures 1 to 4 The welding workpiece clamping tool in the embodiment of the present application comprises a bottom plate 1, a bearing jig 2 and a clamping part 3, wherein:

[0032] The bearing jig 2 is arranged on the bottom plate 1 and is used to bear the workpiece;

[0033] The clamping part 3 comprises a lifting driving module 31, a rotating driving module 32 and a clamping jaw assembly 33, wherein the lifting driving module 31 is arranged on the bottom plate 1, the rotating driving module 32 is arranged on the movable part of the lifting driving module 31, and the clamping part 3 is connected to the movable part of the rotating driving module 32 and is located above the bearing jig 2;

[0034] The lifting driving module 31 is used to drive the clamping jaw assembly 33 to lift, so as to drive the clamping part 3 to clamp the workpiece to be welded from the bearing jig 2, lift the workpiece to be welded to a predetermined welding station, and put the workpiece after welding back to the bearing jig 2;

[0035] The rotating driving module 32 is used to drive the clamping jaw assembly 33 to rotate vertically during the welding process, so as to drive the workpiece to rotate synchronously.

[0036] The working process of the welding workpiece clamping tool in the embodiment of the present application is as follows:

[0037] The lifting driving module 31 drives the clamping jaw assembly 33 to descend towards the bearing jig 2, and after the clamping jaw assembly 33 clamps the workpiece to be welded from the bearing jig 2, the lifting driving module 31 drives the clamping jaw assembly 33 to ascend to the original position, so as to lift the workpiece to the predetermined welding station.

[0038] The laser welding device implements welding on the current upward surface of the workpiece, after the laser welding of the current upward surface is completed, the rotating driving module 32 drives the clamping jaw assembly 33 to rotate vertically, so as to automatically turn over the workpiece, and make another surface of the workpiece to be welded upward.

[0039] When all the side surfaces of the workpiece are completed welding, the lifting driving module 31 drives the clamping jaw assembly 33 to descend again to put the completed workpiece back on the bearing fixture 2.

[0040] Compared with the traditional welding method, the welding workpiece clamping tool can clamp and position the workpiece to be welded, so that the laser welding device can accurately weld the workpiece. In addition, during the welding process, the welding workpiece clamping tool of the application realizes automatic turning of the workpiece, thereby improving the welding efficiency of the workpiece.

[0041] Optionally, the bearing fixture 2 comprises a plurality of support rods 21 arranged on the bottom plate 1 and a bearing plate 22 fixed on the plurality of support rods 21, and the bearing plate 22 is provided with a notch 23 for avoiding the clamping part 3 at one edge thereof.

[0042] When it is necessary to clamp the workpiece on the bearing plate 22, the lifting driving module 31 drives the clamping jaw assembly 33 to descend towards the bearing fixture 2, and when the clamping jaw assembly 33 is in place, the clamping jaw assembly 33 enters the notch 23. Then, the workpiece to be welded on the bearing plate 22 is pushed towards the clamping jaw assembly 33, so that the end of the workpiece to be welded enters the clamping jaw assembly 33. Thus, the clamping jaw assembly 33 can clamp the workpiece to be welded smoothly.

[0043] As shown in Figure 2 Optionally, the clamping jaw assembly 33 comprises a clamping jaw cylinder 331, a first clamping jaw 332 and a second clamping jaw 333, wherein the clamping jaw cylinder 331 is connected to the movable part of the rotary driving module 32, the first clamping jaw 332 and the second clamping jaw 333 are connected to the two driving ends of the clamping jaw cylinder 331, a clamping space is formed between the first clamping jaw 332 and the second clamping jaw 333, and the clamping jaw cylinder 331 drives the first clamping jaw 332 and the second clamping jaw 333 to clamp or release the workpiece in the clamping space.

[0044] When it is necessary to clamp the workpiece on the bearing plate 22, the rotary driving module 32 drives the clamping jaw assembly 33 to rotate so that the first clamping jaw 332 is located directly above the second clamping jaw 333. Then, the lifting driving module 31 drives the clamping jaw assembly 33 to descend towards the bearing fixture 2 to a position where the second clamping jaw 333 reaches the lower side of the bearing plate 22 after passing through the notch 23 of the bearing plate 22, and the first clamping jaw 332 stops at the upper side of the bearing plate 22. Then, the workpiece to be welded on the bearing plate 22 is pushed towards the clamping jaw assembly 33, so that the workpiece to be welded enters the clamping space between the first clamping jaw 332 and the second clamping jaw 333. Then, the clamping jaw cylinder 331 drives the first clamping jaw 332 and the second clamping jaw 333 to clamp the workpiece.

[0045] As shown in Figure 3As shown, optionally, the clamping jaw assembly 33 further comprises a first limiting plate 334 and a second limiting plate 335 which are oppositely connected to the two side walls of the cylinder body of the clamping jaw cylinder 331. The first clamping jaw 332, the second clamping jaw 333, the first limiting plate 334 and the second limiting plate 335 jointly form a clamping space.

[0046] By arranging the first limiting plate 334 and the second limiting plate 335, the workpiece clamped by the first clamping jaw 332 and the second clamping jaw 333 is limited, preventing the workpiece from falling from the other two side surfaces of the clamping space after the clamping jaw assembly 33 is implemented to turn over the workpiece.

[0047] As shown, Figure 3 Optionally, the first clamping jaw 332 is connected to one driving end of the clamping jaw cylinder 331 through a first connecting block 336, and the second clamping jaw 333 is connected to the other driving end of the clamping jaw cylinder 331 through a second connecting block 337. The end of at least one of the first connecting block 336 and the second connecting block 337 is provided with a sensing assembly which is triggered by the workpiece to generate an induction signal when the workpiece enters the clamping space. The control end of the clamping jaw cylinder 331 drives the first clamping jaw 332 and the second clamping jaw 333 to clamp the workpiece immediately after receiving the induction signal, thereby improving the corresponding speed of the clamping jaw assembly 33 clamping the workpiece.

[0048] In order to improve the clamping stability of the workpiece by the first clamping jaw 332 and the second limiting plate 335, and prevent the clamped workpiece from slipping, optionally, anti-skid lines or anti-skid pads are arranged on the inner side walls of the first clamping jaw 332 and the second limiting plate 335.

[0049] As shown, Figure 1 Optionally, the lifting driving module 31 comprises a column 311, a first motor 312, a lead screw, a nut, a sliding rail and a sliding block 313. The lower end of the column 311 is fixedly installed on the bottom plate 1, the sliding rail is arranged on the column 311 in the vertical direction, and the sliding block 313 is slidingly connected to the sliding rail. The first motor 312 is arranged at the top of the column 311, the lead screw is arranged on the column 311 in the vertical direction, the upper end of the lead screw is connected to the driving end of the first motor 312, the nut is screwed on the lead screw and fixedly connected to the sliding block 313, and the rotary driving module 32 is arranged on the sliding block 313.

[0050] The lead screw driving mechanism composed of the first motor 312, the lead screw and the nut can stably and accurately drive the rotary driving module 32 and the clamping jaw assembly 33, thereby ensuring that the clamping jaw assembly 33 can accurately clamp the workpiece and lift the workpiece to the predetermined welding station. Of course, the lifting driving module 31 can also use other linear driving modules with existing structures, such as air cylinders and electric cylinders.

[0051] As shown, Figure 3As shown, in one optional embodiment, the rotary drive module 32 comprises a second motor 321, a driving pulley, a driven pulley, a synchronous belt 323 and a first connecting bracket 324, wherein: the second motor 321 is arranged on the sliding block 313, the driving pulley is connected to the driving end of the second motor 321, the driven pulley is connected to the sliding block 313 through a rotary bearing, the first connecting bracket 324 is connected to the end face of the driven pulley, and the jaw assembly 33 is connected to the first connecting bracket 324; the synchronous belt 323 is sleeved on the driving pulley and the driven pulley; the second motor 321 drives the driven pulley to rotate through the driving pulley and the synchronous belt 323, and when the driven pulley rotates, the first connecting bracket 324 and the jaw assembly 33 are driven to rotate vertically.

[0052] In another optional embodiment, the rotary drive module 32 comprises a DD motor and a second connecting bracket, wherein the DD motor is installed on the sliding block 313, the second connecting bracket is connected to the mounting face of the DD motor, and the jaw assembly 33 is connected to the second connecting bracket. The DD motor drives the first connecting bracket 324 to rotate vertically to drive the jaw assembly 33 to rotate synchronously.

[0053] The DD motor has high driving precision and high driving stability, which can ensure that when the jaw assembly 33 is rotated to the position, one side surface of the workpiece to be welded faces upward.

[0054] The above has described the utility model in sufficient detail and has certain particularity. It should be understood by those skilled in the art that the description in the embodiments is only exemplary, and all changes made without departing from the true spirit and scope of the utility model should belong to the protection scope of the utility model. The scope of protection claimed by the utility model is defined by the claims, not by the above description in the embodiments.

Claims

1. A workpiece clamping fixture, characterized in that, The welding workpiece clamping fixture includes a base plate, a bearing jig, and clamping components, wherein: The support fixture is mounted on the base plate and is used to support the workpiece; The clamping component includes a lifting drive module, a rotating drive module, and a gripper assembly. The lifting drive module is disposed on the base plate, the rotating drive module is disposed on the movable part of the lifting drive module, and the clamping component is connected to the movable part of the rotating drive module and located above the support fixture. The lifting drive module is used to drive the gripper assembly to lift and lower, so as to drive the clamping component to clamp the workpiece to be welded from the support fixture, lift the workpiece to be welded to a predetermined welding position, and put the welded workpiece back onto the support fixture. The rotary drive module is used to drive the gripper assembly to rotate vertically during the welding process, so as to drive the workpiece to rotate synchronously.

2. The welding workpiece clamping fixture as described in claim 1, characterized in that, The bearing fixture includes a plurality of support rods disposed on the base plate and a bearing plate fixed on the plurality of support rods, wherein a slot for avoiding the clamping part is provided at one end edge of the bearing plate.

3. The welding workpiece clamping fixture as described in claim 1, characterized in that, The gripper assembly includes a gripper cylinder, a first gripper, and a second gripper, wherein: The gripper cylinder is connected to the movable part of the rotary drive module; The first jaw and the second jaw are connected to the two drive ends of the gripper cylinder, and a clamping space is formed between the first jaw and the second jaw. The gripper cylinder drives the first jaw and the second jaw to clamp or release the workpiece located in the clamping space.

4. The welding workpiece clamping fixture as described in claim 3, characterized in that, The gripper assembly also includes a first limiting plate and a second limiting plate that are connected to the two side walls of the cylinder body of the gripper cylinder. The first gripper, the second gripper, the first limiting plate and the second limiting plate together form the gripping space.

5. The welding workpiece clamping fixture as described in claim 3, characterized in that: The first gripper is connected to one drive end of the gripper cylinder via a first connecting block, and the second gripper is connected to the other drive end of the gripper cylinder via a second connecting block; At least one of the first connecting block and the second connecting block is provided with a sensing component at its end. After the workpiece enters the clamping space, the sensing component is triggered to generate a sensing signal.

6. The welding workpiece clamping fixture as described in claim 3, characterized in that, The inner walls of the first gripper and the second limiting plate are provided with anti-slip textures or anti-slip pads.

7. The welding workpiece clamping fixture as described in claim 1, characterized in that, The lifting drive module includes a column, a first motor, a lead screw, a nut, a slide rail, and a slider, wherein: The lower end of the column is fixedly installed on the base plate, the slide rail is arranged vertically on the column, and the slider is slidably connected to the slide rail; The first motor is mounted on the top of the column, the lead screw is mounted vertically on the column, the upper end of the lead screw is connected to the drive end of the first motor, and the nut is screwed onto the lead screw and fixedly connected to the slider. The rotation drive module is mounted on the slider.

8. The welding workpiece clamping fixture as described in claim 7, characterized in that, The rotary drive module includes a second motor, a driving pulley, a driven pulley, a synchronous belt, and a first connecting bracket, wherein: The second motor is mounted on the slider, the driving pulley is connected to the drive end of the second motor, the driven pulley is connected to the slider via a rotary bearing, the first connecting bracket is connected to the end face of the driven pulley, and the gripper assembly is connected to the first connecting bracket; The synchronous belt is sleeved on the driving pulley and the driven pulley; The second motor drives the driven pulley to rotate via the driving pulley and the synchronous belt. When the driven pulley rotates, it causes the first connecting bracket and the gripper assembly to rotate vertically.

9. The welding workpiece clamping fixture as described in claim 8, characterized in that, The rotary drive module includes a DD motor and a second connecting bracket, wherein the DD motor is mounted on the slider, the second connecting bracket is connected to the mounting surface of the DD motor, and the gripper assembly is connected to the second connecting bracket; The DD motor drives the first connecting bracket to rotate vertically, thereby causing the gripper assembly to rotate synchronously.

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