A quick clamping fixture for laser sealing and welding

Abstract

The present invention discloses a laser sealing and welding quick clamping fixture, comprising a welding table, a fixed position for placing a workpiece to be welded is arranged on the welding table, fixed baffles for holding the workpiece to be welded are arranged on two adjacent sides of the fixed position, and other sides of the fixed position are used to set a fixing fixture, the fixing fixture is detachably connected to the welding table, and a rotating pressure rod is arranged on the fixing fixture, and the rotating pressure rod is used to clamp the workpiece to be welded together with the fixed baffle. The workpiece to be welded is placed on a side of the fixed baffle close to the rotating pressure rod, and then the fixing fixture is installed on the welding table according to the actual size of the workpiece to be welded, and then the rotating pressure rod is opened so that the rotating pressure rod and the fixed baffle fix the workpiece to be welded together, which has the characteristics of easy installation and applicable to workpieces of multiple sizes to be welded.

Description

Technical Field

[0001] The invention relates to the field of laser welding, and in particular to a laser sealing and welding quick clamping fixture. Background Art

[0002] Laser hermetic sealing welding technology refers to the use of laser to melt the materials of the sealing parts of metal parts. The working principle is mainly to generate energy through the laser beam to melt the metal with high laser spectrum absorption ability at the weld, and form a good brazing joint after cooling. Therefore, laser hermetic sealing welding technology is currently the most reliable and effective means of airtightness.

[0003] When the workpiece is laser welded, due to the high matching accuracy of the metal shell and the cover plate, if the workpiece is displaced during the welding process, the welding path and the laser welding defocus amount and other parameters will change, resulting in the welding failing to meet the airtightness requirements. Therefore, it is often necessary to use a fixture to clamp and position the workpiece to be welded. At present, the existing laser welding clamping and positioning fixtures are designed and manufactured according to the structural and external characteristics of the workpiece to ensure the smooth welding of the workpiece to be welded. Since the structural form of the fixture is fixed, it cannot be used for other workpieces to be welded. Special fixtures need to be designed for each part, resulting in a waste of manpower and resources. At the same time, the parts are inconvenient to clamp and the operation is not simple enough, which greatly reduces the efficiency of batch welding. Based on the requirements for the diversity of laser welding products, welding reliability, cost, and welding efficiency, it is necessary to design and manufacture a universal laser welding quick clamping fixture. Summary of the invention

[0004] The technical problem to be solved by the present invention is, in view of the above-mentioned problems, a laser sealing and welding quick clamping fixture is provided, the workpiece to be welded is placed on the side of the fixed baffle close to the rotating pressure rod, and then the fixed clamp is installed on the welding table according to the actual size of the workpiece to be welded, and then the rotating pressure rod is opened, so that the rotating pressure rod and the fixed baffle together fix the workpiece to be welded. It has the characteristics of easy installation and is suitable for workpieces of multiple sizes to be welded.

[0005] The technical solution adopted by the present invention is as follows: a laser sealing and welding quick clamping fixture, including a welding table, a fixed position for placing a workpiece to be welded is provided on the welding table, a fixed baffle for holding the workpiece to be welded is provided on one side of the fixed position, a fixing fixture is provided on the side of the fixed position adjacent to the fixed baffle, the fixing fixture is detachably connected to the welding table, a rotating pressure rod is provided on the fixing fixture, and the rotating pressure rod is used to clamp the workpiece to be welded together with the fixed baffle. The workpiece to be welded is placed on the side of the fixed baffle close to the rotating pressure rod, and then the fixing fixture is installed on the welding table according to the actual size of the workpiece to be welded, and then the rotating pressure rod is opened so that the rotating pressure rod and the fixed baffle together fix the workpiece to be welded, which has the characteristics of easy installation and is suitable for workpieces of multiple sizes to be welded.

[0006] Preferably, the fixing fixture comprises a fixing adjustment part, the fixing adjustment part is rotationally connected to the rotating pressure rod via a torsion spring, and the torsion spring is in a torsion state. Under the action of the torsion spring, the rotating pressure rod can tightly press the workpiece to be welded, and further clamp the workpiece to be welded.

[0007] Preferably, a locking device is provided on the end of the fixed adjustment part away from the torsion spring, and a locking position is provided on the end of the rotating pressure rod away from the torsion spring, and the locking device cooperates with the locking position to achieve fixation. When it is not needed, the column rotating pressure rod can be fixed, and when it is needed, the locking device can be directly opened to rotate the rotating pressure rod.

[0008] Preferably, the locking device comprises a sliding block, a locking tongue and a pressing spring, wherein the sliding block is fixedly connected to the locking tongue, one end of the pressing spring abuts against the locking tongue and the other end abuts against the fixed adjustment portion; the locking tongue is used to extend into or slide out of the locking position. The sliding block is moved and the pressing spring is compressed, and the locking tongue slides out of the locking position, at which time the rotating pressure rod can be opened; after the rotating pressure rod is used, the rotating pressure rod is rotated in the opposite direction, so that the locking tongue is reset to the locking position.

[0009] Preferably, a buckle hook is provided on the locking position, and a sliding slope is provided on one end of the lock tongue close to the buckle hook, and the hook presses the sliding slope to compress the pressing spring until the buckle hook is buckled with the sliding portion, and the pressing spring is reset. Similar to the anti-theft door lock tongue, it is more labor-saving to retract the rotating pressure rod.

[0010] Preferably, the fixing and adjusting part comprises a fixing block and an adjusting screw, wherein the adjusting screw passes through the fixing block and is fixed on the welding table, and a fixing knob is provided on one side of the fixing block, wherein the fixing knob is used to insert the fixing block and fix the adjusting screw. The height of the fixing block can be adjusted, and workpieces to be welded with different column thicknesses can be fixed.

[0011] Preferably, the welding table is provided with fixing holes that cooperate with the adjusting screws, and the number of the fixing holes is multiple and evenly and equidistantly arranged on the welding table. Any position on the welding table can be selected for fixing according to actual needs, so that the workpiece to be welded is fixed more firmly.

[0012] Preferably, the number of the adjusting screws is two and they are evenly distributed on the fixing block; the number of the fixing knobs is the same as the number of the adjusting screws and their positions correspond one to one. The fixing block is more evenly stressed, and the fixing block and the welding table are more stable, preventing damage caused by movement of the welding workpiece during welding.

[0013] Preferably, the ends of the adjusting screw and the fixing knob are provided with knurled rotation positions to increase friction and facilitate manual rotation.

[0014] Preferably, a contact layer is provided on one side of the rotating pressure rod close to the workpiece to be welded, and the contact layer is made of a soft material so as not to damage the surface quality of the workpiece to be welded.

[0015] Compared with the prior art, the beneficial effects of adopting the above technical solution are as follows: a laser sealing and welding quick clamping fixture of the present invention includes a welding table, the welding table is provided with a fixed position for placing the workpiece to be welded, the adjacent two sides of the fixed position are provided with fixed baffles for supporting the workpiece to be welded, the other sides of the fixed position are used to set a fixed clamp, the fixed clamp is detachably connected to the welding table, and a rotating pressure rod is provided on the fixed clamp, and the rotating pressure rod is used to clamp the workpiece to be welded together with the fixed baffle. The workpiece to be welded is placed on the side of the fixed baffle close to the rotating pressure rod, and then the fixed clamp is installed on the welding table according to the actual size of the workpiece to be welded, and then the rotating pressure rod is opened so that the rotating pressure rod and the fixed baffle together fix the workpiece to be welded, which has the characteristics of easy installation and is suitable for workpieces of multiple sizes to be welded. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the fixing fixture of the present invention;

[0017] Figure 2 is a first cross-sectional view of the fixing fixture of the present invention;

[0018] Figure 3 is a second cross-sectional view of the fixing fixture of the present invention;

[0019] Figure 4 It is the overall structural diagram of the present invention.

[0020] Explanation of the symbols of the main elements: 1. Welding table; 2. Workpiece to be welded; 3. Fixed baffle; 4. Fixed fixture; 5. Wear plate; 11. Fixed hole; 41. Rotating pressure rod; 42. Fixed block; 43. Adjusting screw; 44. Fixed knob; 45. Locking device; 46. Torsion spring; 411. Locking position; 451. Sliding block; 452. Lock tongue; 453. Press spring. DETAILED DESCRIPTION

[0021] The present invention is described in detail below in conjunction with the accompanying drawings. In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] Example 1: Please refer to Figures 1 to 4A laser sealing and welding quick clamping fixture of the present embodiment includes a welding table 1, a fixed position for placing a workpiece 2 to be welded is provided on the welding table 1, a fixed baffle 3 for holding the workpiece 2 to be welded is provided on one side of the fixed position, a fixed fixture 4 is provided on one side of the fixed position adjacent to the fixed baffle 3, the fixed fixture 4 is detachably connected to the welding table 1, a rotating pressure rod 41 is provided on the fixed fixture 4, and the rotating pressure rod 41 is used to clamp the workpiece 2 to be welded together with the fixed baffle 3. The workpiece 2 to be welded is placed on the side of the fixed baffle 3 close to the rotating pressure rod 41, and then the fixed fixture 4 is installed on the welding table 1 according to the actual size of the workpiece 2 to be welded, and then the rotating pressure rod 41 is opened, so that the rotating pressure rod 41 and the fixed baffle 3 together fix the workpiece 2 to be welded, which has the characteristics of easy installation and applicable to workpieces 2 to be welded of multiple sizes.

[0023] Embodiment 2: The fixing clamp 4 of this embodiment includes a fixing adjustment part, and the fixing adjustment part is rotationally connected to the rotating pressure rod 41 through a torsion spring 46, and the torsion spring 46 is in a torsion state. Under the action of the torsion spring 46, the rotating pressure rod 41 can tightly press the workpiece 2 to be welded, and further clamp the workpiece 2 to be welded. A locking device 45 is provided on the end of the fixing adjustment part of this embodiment away from the torsion spring 46, and a locking position 411 is provided on the end of the rotating pressure rod 41 away from the torsion spring 46, and the locking device 45 cooperates with the locking position 411 to achieve fixation. When it is not needed, the column rotating pressure rod 41 can be fixed, and when it is needed, the locking device 45 can be directly opened to rotate the rotating pressure rod 41 out.

[0024] Embodiment 3: The locking device 45 of this embodiment includes a sliding block 451, a locking tongue 452 and a pressing spring 453. The sliding block 451 is fixedly connected to the locking tongue 452. One end of the pressing spring 453 abuts against the locking tongue 452 and the other end abuts against the fixed adjustment portion. The locking tongue 452 is used to extend into or slide out of the locking position 411. The sliding block 451 is moved and the pressing spring 453 is compressed, and the locking tongue 452 slides out of the locking position 411, and the rotating pressure rod 41 can be opened at this time. After the rotating pressure rod 41 is used, the rotating pressure rod 41 is rotated in the opposite direction, so that the locking tongue 452 is reset to the locking position 411. A buckling hook is provided on the locking position 411 of this embodiment, and a sliding slope is provided on one end of the locking tongue 452 close to the buckling hook. The hook presses the sliding slope to compress the pressing spring 453 until the buckling hook is buckled with the sliding portion, and the pressing spring 453 is reset. Similar to the anti-theft door lock tongue 452, the rotating pressure rod 41 is more labor-saving when retracting.

[0025] Embodiment 4: The fixed adjustment part of this embodiment includes a fixed block 42 and an adjusting screw 43. The adjusting screw 43 passes through the fixed block 42 and is fixed on the welding table 1. A fixed knob 44 is provided on one side of the fixed block 42. The fixed knob 44 is used to insert the fixed block 42 and fix the adjusting screw 43. The height of the fixed block 42 can be adjusted, and the workpiece 2 to be welded with different column thicknesses can be fixed. The welding table 1 of this embodiment is provided with a fixing hole 11 that cooperates with the adjusting screw 43. The number of the fixing holes 11 is multiple, and they are evenly and equidistantly arranged on the welding table 1. Any position on the welding table 1 can be selected for fixing according to actual needs, so that the workpiece 2 to be welded is fixed more firmly.

[0026] Embodiment 5: The number of adjusting screws 43 in this embodiment is two, and they are evenly distributed on the fixed block 42; the number of fixed knobs 44 is the same as the number of adjusting screws 43, and the positions correspond one to one. The fixed block 42 is more evenly stressed, and the fixed block 42 and the welding table 1 are more stable, preventing damage caused by the movement of the welding workpiece during welding. The ends of the adjusting screw 43 and the fixed knob 44 of this embodiment are provided with knurled rotation positions. Increase the friction force and facilitate manual rotation. The rotating pressure rod 41 of this embodiment is provided with a contact layer on the side close to the workpiece 2 to be welded, and the contact layer is made of soft material. The soft material includes polytetrafluoroethylene or one of other engineering plastics; it will not damage the surface quality of the workpiece 2 to be welded. The adjusting screw 43, the fixed knob 44 and the lock tongue 452 of this embodiment are made of stainless steel, and the pressing spring 453 and the torsion spring 46 are made of carbon spring steel wire.

[0027] Workflow: First, place the workpiece 2 to be welded on the welding table 1, select the fixed hole 11 on the welding table 1 according to the size of the workpiece 2 to be welded, tighten the adjusting screw 43, limit the horizontal position of the fixing fixture 4, and then select the fixed height of the fixing block 42 according to the height of the workpiece 2 to be welded, loosen the fixing knob 44, move the fixing block 42 up and down, and tighten the fixing knob 44 after determining the appropriate height, and the fixing fixture 4 is installed in place. One or more fixing fixtures 4 can be selected according to the size of the workpiece 2 to be welded. Move the sliding block 451 backward, and the rotating pressure rod 41 will automatically open to clamp the workpiece 2 to be welded. After welding is completed, move the rotating pressure rod 41 back to the closed position, the locking tongue 452 clamps the rotating pressure rod 41, the fixing fixture 4 is in a closed state, and the workpiece is removed. Clamp the same workpiece 2 to be welded again, move the pressure block, and lock it quickly without adjusting the position of the fixing clamp. When it is necessary to replace the workpiece 2 to be welded of different sizes, it is only necessary to change the position of the fixing fixture 4.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser welding quick clamping fixture, characterized in that: The welding table comprises a welding table, wherein a fixing position for placing a workpiece to be welded is arranged on the welding table, and fixing baffles for holding the workpiece to be welded are arranged on two adjacent sides of the fixing position, and other sides of the fixing position are used to set a fixing clamp, and the fixing clamp is detachably connected to the welding table, and a rotating pressure rod is arranged on the fixing clamp, and the rotating pressure rod is used to clamp the workpiece to be welded together with the fixing baffle; The fixing fixture comprises a fixing adjustment part, the fixing adjustment part is rotationally connected to the rotating pressure rod via a torsion spring, and the torsion spring is in a torsion state; A locking device is provided on one end of the fixed adjustment part away from the torsion spring, and a locking position is provided on one end of the rotating pressure rod away from the torsion spring, and the locking device cooperates with the locking position to achieve fixation; The locking device comprises a sliding block, a locking tongue and a pressing spring, wherein the sliding block is fixedly connected to the locking tongue, one end of the pressing spring abuts against the locking tongue and the other end abuts against the fixed adjustment portion; the locking tongue is used to extend into or slide out of the locking position; The locking position is provided with a buckling hook, and one end of the lock tongue close to the buckling hook is provided with a sliding slope, and the hook presses the sliding slope to compress the pressing spring until the buckling hook is buckled with the sliding slope, and the pressing spring is reset; The fixed adjustment part includes a fixed block and an adjustment screw, the adjustment screw passes through the fixed block and is fixed on the welding table, and a fixing knob is arranged on one side of the fixed block, and the fixing knob is used to insert the fixed block and fix the adjustment screw.

2. The laser sealing and welding quick clamping fixture according to claim 1 is characterized in that: The welding table is provided with fixing holes that cooperate with the adjusting screws. The fixing holes are multiple and are evenly and equidistantly arranged on the welding table.

3. The laser sealing and welding quick clamping fixture according to claim 1 is characterized in that: The number of the adjusting screws is two and they are evenly distributed on the fixing block; the number of the fixing knobs is the same as the number of the adjusting screws and their positions correspond one to one.

4. The laser sealing and welding quick clamping fixture according to claim 3 is characterized in that: The ends of the adjusting screw and the fixing knob are provided with knurled rotation positions.

5. The laser sealing and welding quick clamping fixture according to claim 1, characterized in that: A contact layer is arranged on one side of the rotating pressure rod close to the workpiece to be welded, and the contact layer is made of soft material.

Images