Simple airtightness detection and laser repair welding clamp

Abstract

The utility model relates to the technical field of machining, in particular to a simple air tightness detection and laser repair welding clamp. Comprising a manual turnover positioner, a turnover plate, first sliding rails, a positioning assembly, a first pressing assembly and a second pressing assembly, the turnover plate is fixedly installed on the manual turnover positioner, the first sliding rails are fixedly installed on the two sides of the long edge of the turnover plate, first sliding blocks are installed on the first sliding rails in a sliding mode, and the first pressing assembly is fixedly installed on the first sliding blocks; a first pressing assembly is fixedly installed at the bottom of the overturning plate and used for pressing the top of a workpiece, a plurality of positioning assemblies are arranged on the two sides of the long edge of the overturning plate at intervals, the positioning assemblies are arranged on one side of the first sliding rail and used for positioning the workpiece, and a second pressing assembly is fixedly installed at the bottom of the overturning plate and used for pressing the bottom of the workpiece. The efficiency of processing the airtight problem is greatly improved, and the production cycle of products is shortened.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, in particular to a simple airtightness detection and laser repair welding fixture. Background Art

[0002] In a certain welding project, it is necessary to perform airtightness testing and manual laser repair welding on a new energy vehicle battery box cover assembly after robot laser welding. Since the heat of the new energy vehicle battery box cover assembly is easily concentrated during the robot laser welding process and the welding process is prone to full penetration, the airtightness of the assembly is affected.

[0003] Traditional inspection and repair welding methods are often inefficient and lack accuracy. For this complex new energy vehicle battery box cover assembly, a specialized device is needed that can quickly and accurately detect airtightness issues while also efficiently performing manual laser repair welding to ensure product quality and meet the high safety and reliability requirements of new energy vehicles.

[0004] Therefore, we proposed a simple airtightness detection and laser repair welding fixture to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a simple airtightness detection and laser repair welding fixture, which can quickly and accurately detect the airtightness of a workpiece, and the equipment is simple to operate and easy to use.

[0006] The utility model solves the technical problem by adopting the following technical solutions:

[0007] A simple airtightness detection and laser repair welding fixture includes a manual flip positioner, a flip plate, a first slide rail, a positioning assembly, a first clamping assembly and a second clamping assembly. The manual flip positioner is fixed with a flip plate, and the first slide rails are fixed on both sides of the long side of the flip plate. The first slider is slidably installed on the first slide rail, and the first clamping assembly is fixed on the first slider. The first clamping assembly performs a clamping operation on the top of the workpiece. Several positioning assemblies are also provided at intervals on both sides of the long side of the flip plate. The positioning assembly is arranged on one side of the first slide rail to position the workpiece. The second clamping assembly is fixed on the bottom of the flip plate to perform a clamping operation on the bottom of the workpiece.

[0008] Moreover, the manual flip positioner includes a first bracket, a second bracket, a cross bar, a leveling foot, a follower tailstock, a connecting plate, a connecting seat, a brake disc, a rotating shaft, a reducer, a convenient handwheel and a limit assembly. The first bracket and the second bracket are arranged opposite to each other, and a cross bar is fixed between the first bracket and the second bracket. Leveling feet are provided at the bottom of the first bracket and the second bracket. A follower tailstock is provided at the top of the first bracket, and a connecting plate is fixed on the inner side of the second bracket. A flip plate is fixed on one side of the connecting plate, and a brake disc is fixed on the other side of the connecting plate. A rotating shaft is connected to the center of the brake disc, and the other end of the rotating shaft passes through the connecting seat and is fixed to the reducer. A convenient handwheel is installed on one side of the reducer, wherein the connecting seat is fixed on the top of the second bracket, and a limit assembly is also fixed on the top of the second bracket.

[0009] Moreover, the limit assembly includes a limit rod, a limit shaft and a limit block. The limit block is fixedly mounted on the top of the second bracket, and the limit block is set as an opening. A limit shaft is passed through the limit block, and one end of the limit shaft is passed through the through hole of the brake disc. A limit rod is also fixed on the limit shaft, and the limit rod is set perpendicular to the limit shaft. By limiting the limit rod at the opening of the limit block, the angle of the flip plate is limited.

[0010] Moreover, the first clamping assembly includes a first clamping cylinder, a first displacement cylinder, a connecting frame and a first clamping plate. A connecting frame is fixedly installed on the top of the first slider, and the first clamping cylinder is fixedly installed on the crossbeam of the connecting frame. The piston rod of the first clamping cylinder passes through the crossbeam and is fixed to the first clamping plate. The first displacement cylinder is fixedly installed on the outer side of the first slider. The first slider is driven to move along the first slide rail through the extension and contraction of the piston rod of the first displacement cylinder, thereby driving the displacement of the first clamping assembly; wherein, there are multiple first clamping cylinders.

[0011] Moreover, the second clamping assembly includes a second clamping cylinder, a second slide rail, a second slider, a second displacement cylinder and a second clamping plate. The second slide rail is fixedly installed at the bottom of the flip plate, the second slider is slidably installed on the second slide rail, the second clamping plate is fixedly installed on the second slider, and several second clamping cylinders are fixedly installed on the second clamping plate. The clamping operation is performed on the workpiece by the extension and retraction of the piston rod of the second clamping cylinder; a second displacement cylinder is also fixedly installed at the bottom of the flip plate, the second displacement cylinder is arranged parallel to the second slide rail, one end of the piston rod of the second displacement cylinder is connected to the second clamping plate, and the displacement of the second clamping plate on the second slide rail is realized by the extension and retraction of the telescopic rod of the second displacement cylinder.

[0012] Moreover, the positioning assembly includes a positioning cylinder, a rotating plate and a connecting ear plate. The connecting ear plate is fixedly installed on the outer side of the flip plate, and the positioning cylinder is fixedly installed on the outer side of the connecting ear plate. The piston rod of the positioning cylinder is connected to the positioning pressure arm through the rotating plate. The rotation of the positioning cylinder drives the movement of the positioning pressure arm to realize the positioning of the workpiece.

[0013] The advantages and positive effects of the utility model are:

[0014] 1. The positioning assembly of this utility model precisely positions the battery compartment cover assembly of new energy vehicles through the coordinated action of a positioning cylinder, a rotating plate, and a connecting lug. The rotation of the positioning cylinder drives the positioning pressure arm, applying positioning force to the workpiece from multiple directions. This effectively prevents minor displacement of the workpiece during the clamping process, ensuring a high level of workpiece positioning accuracy during airtightness testing and laser repair welding, thereby ensuring the accuracy of test results and the precision of repair welding positions.

[0015] 2. The first and second clamping assemblies of the present invention simultaneously clamp the workpiece from both the top and bottom. The multiple first clamping cylinders in the first clamping assembly evenly distribute pressure on the top of the workpiece, preventing it from floating or locally deforming during machining. The second clamping assembly, through the second clamping cylinders and a second clamping plate movable on a second slide rail, adaptively adjusts the clamping position and force based on the shape and size of the workpiece bottom, ensuring a stable workpiece throughout machining and further improving machining accuracy.

[0016] 3. The manual flip positioner of this utility model is equipped with a convenient handwheel and a reducer. The operator can easily control the flip angle of the flip plate with the convenient handwheel, facilitating airtightness testing and laser repair welding of different parts of the workpiece. The presence of the reducer makes operation more labor-saving and smooth, reducing the operator's labor intensity while also increasing the speed of operation. In addition, the first displacement cylinder and the second displacement cylinder can quickly move the first clamping assembly and the second clamping plate on their corresponding slides, respectively, achieving rapid clamping and loosening actions, effectively shortening clamping time and improving overall processing efficiency.

[0017] 4. This utility model is designed for battery box cover assemblies for new energy vehicles. Its structure enables rapid and accurate airtightness testing of workpieces. Once an airtightness issue is detected, the operator can immediately perform manual laser repair welding on the workpiece using a fixture, eliminating the need for complex repositioning or adjustment. This integrated design seamlessly integrates the inspection and repair welding processes, significantly improving the efficiency of airtightness problem resolution and reducing product production cycles. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the present utility model.

[0019] Figure 2 It is a structural diagram of the manual flip positioner of the present utility model.

[0020] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle.

[0021] Figure 4 It is a structural schematic diagram of the flip plate of the utility model.

[0022] Figure 5 It is a bottom view of the flip plate of the present invention.

[0023] Figure 6 It is a structural schematic diagram of the positioning component of the present utility model.

[0024] Reference numerals

[0025] 1- flip plate, 2- connecting frame, 3- follower tailstock, 4- first bracket, 5- cross bar, 6- second bracket, 7- connecting plate, 8- brake disc, 9- rotating axis, 10- limiting axis, 11- connecting seat, 12- limiting rod, 13- limiting block, 14- reducer, 15- convenient handwheel, 16- first clamping cylinder, 17- first clamping plate, 18- cross beam, 19- first slider, 20- first slide rail, 21- first displacement cylinder, 22- second clamping plate, 23- second slide rail, 24- second displacement cylinder, 25- second clamping cylinder, 26- positioning pressure arm, 27- rotating plate, 28- positioning cylinder, 29- connecting ear plate. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and through specific embodiments. The following embodiments are merely illustrative and non-restrictive, and should not be used to limit the scope of protection of the present invention.

[0027] A simple airtightness detection and laser repair welding fixture includes a manual flip positioner, a flip plate 1, a first slide rail 20, a positioning assembly, a first clamping assembly and a second clamping assembly. The flip plate 1 is fixedly installed on the manual flip positioner, and the first slide rails 20 are fixedly installed on both sides of the long side of the flip plate 1. The first slider 19 is slidably installed on the first slide rail 20, and the first clamping assembly is fixed on the first slider 19. The first clamping assembly performs a clamping operation on the top of the workpiece. Several positioning assemblies are also provided at intervals on both sides of the long side of the flip plate 1. The positioning assembly is arranged on one side of the first slide rail 20 to position the workpiece. The second clamping assembly is fixedly installed on the bottom of the flip plate 1 to perform a clamping operation on the bottom of the workpiece.

[0028] The manual flip positioner includes a first bracket 4, a second bracket 6, a cross bar 5, a leveling foot, a follower tailstock 3, a connecting plate 7, a connecting seat 11, a brake disc 8, a rotating shaft 9, a reducer 14, a convenient handwheel 15 and a limit assembly. The first bracket 4 and the second bracket 6 are arranged opposite to each other, and the cross bar 5 is fixed between the first bracket 4 and the second bracket 6. Leveling feet are provided at the bottom of the first bracket 4 and the second bracket 6. A follower tailstock 3 is provided at the top of the first bracket 4, and a connecting plate 7 is fixed on the inner side of the second bracket 6. The flip plate 1 is fixed on one side of the connecting plate 7, and the brake disc 8 is fixed on the other side of the connecting plate 7. A rotating shaft 9 is connected to the center of the brake disc 8. The other end of the rotating shaft 9 passes through the connecting seat 11 and is fixed to the reducer 14. A convenient handwheel 15 is installed on one side of the reducer 14, wherein the connecting seat 11 is fixed to the top of the second bracket 6, and a limit assembly is also fixed on the top of the second bracket 6.

[0029] The limiting assembly includes a limiting rod 12, a limiting shaft 10 and a limiting block 13. The limiting block 13 is fixedly mounted on the top of the second bracket 6, and the limiting block 13 is set as an opening. The limiting shaft 10 is passed through the limiting block 13, and one end of the limiting shaft 10 is passed through the through hole of the brake disc 8. A limiting rod 12 is also fixed on the limiting shaft 10. The limiting rod 12 is set perpendicular to the limiting shaft 10. By limiting the limiting rod 12 at the opening of the limiting block 13, the angle of the flip plate 1 is limited.

[0030] The manual flip positioner transmits rotational power through a convenient handwheel 15, a reducer 14, and a rotating shaft 9. The operator turns the convenient handwheel 15, transmitting its rotational motion to the reducer 14. The reducer 14, based on its internal gear ratio, reduces the input speed and increases the torque. The processed power is then transferred to the rotating shaft 9, which in turn drives the flip plate 1. When the flip plate 1 is tilted to the desired angle, the operator controls the limit lever 12 to insert the limit shaft 10 into the through-hole of the brake disc 8 and lock the limit lever 12 into the opening of the limit block 13, thereby limiting the angle of the flip plate 1.

[0031] The first clamping assembly includes a first clamping cylinder 16, a first displacement cylinder 21, a connecting frame 2 and a first clamping plate 17. A connecting frame 2 is fixedly installed on the top of the first slider 19, and the first clamping cylinder 16 is fixedly installed on the crossbeam 18 of the connecting frame 2. The piston rod of the first clamping cylinder 16 passes through the crossbeam 18 and is fixed to the first clamping plate 17. The first displacement cylinder 21 is fixedly installed on the outer side of the first slider 19. The first slider 19 is driven to move along the first slide rail 20 by the extension and contraction of the piston rod of the first displacement cylinder 21, thereby driving the displacement of the first clamping assembly; wherein, there are multiple first clamping cylinders 16.

[0032] When the piston rod of the first displacement cylinder 21 is extended or retracted, since the first slider 19 is connected to the piston rod of the first displacement cylinder 21 and the first slider 19 is installed on the first slide rail 20, the first slider 19 will move along the first slide rail 20. This is based on the linear motion principle of the cylinder, and the piston is driven by air pressure to perform linear motion in the cylinder body, thereby driving the piston rod to extend or retract. The movement of the first slider 19 drives the entire first clamping assembly to move in the long side direction of the flip plate 1, so that it can be quickly adjusted to the appropriate clamping position according to the size and position of the workpiece. The air pressure inside the first clamping cylinder 16 then acts on the piston, and the pressure generated is transmitted to the first clamping plate 17 through the piston rod. The arrangement of multiple first clamping cylinders 16 can evenly distribute the pressure on the top of the workpiece. This uniform pressure can effectively prevent the workpiece from floating up or locally deforming during processing, ensuring that the workpiece maintains a stable position during airtightness testing and laser repair welding, providing a reliable foundation for subsequent operations.

[0033] The second clamping assembly includes a second clamping cylinder 25, a second slide rail 23, a second slider (not shown), a second displacement cylinder 24, and a second clamping plate 22. The second slide rail 23 is fixed to the bottom of the flip plate 1, on which a second slider is slidably mounted. The second clamping plate 22 is fixed to the second slider. Several second clamping cylinders 25 are fixed to the second clamping plate 22. The workpiece is clamped by the extension and retraction of the piston rods of the second clamping cylinders 25. A second displacement cylinder 24 is also fixed to the bottom of the flip plate 1. The second displacement cylinder 24 is arranged parallel to the second slide rail 23. One end of the piston rod of the second displacement cylinder 24 is connected to the second clamping plate 22. The extension and retraction of the extension rod of the second displacement cylinder 24 enables the second clamping plate 22 to be displaced on the second slide rail 23. When the piston rod of the second displacement cylinder 24 is extended or retracted, it pushes the second clamping plate 22 to slide on the second slide rail 23. This design allows the second clamping plate 22 to adaptively adjust its position in the horizontal direction according to the shape and size of the workpiece bottom. A plurality of second pressing cylinders 25 are mounted on the second pressing plate 22. When the piston rods of the second pressing cylinders 25 extend, a pressing force is applied to the bottom of the workpiece.

[0034] The positioning assembly includes a positioning cylinder 28, a rotating plate 27, and a connecting lug 29. The connecting lug 29 is fixed to the outside of the flip plate 1, and the positioning cylinder 28 is fixed to the outside of the connecting lug 29. The piston rod of the positioning cylinder 28 is connected to the positioning pressure arm 26 via the rotating plate 27. The rotation of the positioning cylinder 28 drives the positioning pressure arm 26 to position the workpiece. After the workpiece is placed on the fixture, the positioning cylinder 28 of the positioning assembly is activated, and the positioning cylinder 28 begins to rotate, driving the positioning pressure arm 26 via the rotating plate 27. The positioning pressure arm 26 applies a positioning force to the workpiece, accurately positioning it on the flip plate 1 and preventing it from shifting during subsequent operations.

[0035] Working principle:

[0036] The battery box cover assembly for a new energy vehicle, which requires airtightness testing and laser repair welding, is placed on the flip plate. The positioning cylinder in the positioning assembly is activated. As the positioning cylinder rotates, the rotating plate drives the positioning pressure arm to swing, positioning the workpiece.

[0037] The first displacement cylinder in the first clamping assembly works first, and its piston rod extends and retracts to drive the first slider to move along the first slide rail. The connecting frame on the first slider moves accordingly, so that the first clamping assembly as a whole moves to the appropriate position. When the first clamping assembly reaches the appropriate position, multiple first clamping cylinders are started at the same time. The air pressure in the first clamping cylinder pushes the piston, and the piston drives the piston rod to extend, applying uniform pressure to the top of the workpiece through the clamping plate, and performing a clamping operation on the workpiece. Then the second displacement cylinder of the second clamping assembly pushes the second clamping plate to slide on the second slide rail, so that the second clamping plate can adaptively adjust its position according to the shape and size of the bottom of the workpiece. The multiple second clamping cylinders on the second clamping plate are started, and their piston rods extend to apply a clamping force to the bottom of the workpiece, stably clamping the bottom of the workpiece.

[0038] After the workpiece is firmly clamped, it is tested for airtightness by external airtightness testing equipment. During operation, the operator turns the convenient handwheel to operate the manual flip positioner to flip the flip plate.

[0039] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will understand that various replacements, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A simple airtightness detection and laser repair welding fixture, characterized by: It includes a manual flip positioner, a flip plate, a first slide rail, a positioning assembly, a first clamping assembly and a second clamping assembly. The manual flip positioner is fixed with a flip plate, and the first slide rails are fixed on both sides of the long side of the flip plate. The first slider is slidably installed on the first slide rail, and the first clamping assembly is fixed on the first slider. The first clamping assembly performs a clamping operation on the top of the workpiece. Several positioning assemblies are also provided at intervals on both sides of the long side of the flip plate. The positioning assembly is arranged on one side of the first slide rail to position the workpiece. The second clamping assembly is fixed on the bottom of the flip plate to perform a clamping operation on the bottom of the workpiece.

2. The simplified airtightness detection and laser repair welding fixture according to claim 1 is characterized in that: The manual flip positioner includes a first bracket, a second bracket, a cross bar, a leveling foot, a follower tailstock, a connecting plate, a connecting seat, a brake disc, a rotating shaft, a reducer, a convenient handwheel and a limit assembly. The first bracket and the second bracket are arranged opposite to each other, and a cross bar is fixed between the first bracket and the second bracket. Leveling feet are provided at the bottom of the first bracket and the second bracket. A follower tailstock is provided at the top of the first bracket, and a connecting plate is fixed on the inner side of the second bracket. A flip plate is fixed on one side of the connecting plate, and a brake disc is fixed on the other side of the connecting plate. A rotating shaft is connected to the center of the brake disc, and the other end of the rotating shaft passes through the connecting seat and is fixed to the reducer. A convenient handwheel is installed on one side of the reducer, wherein the connecting seat is fixed on the top of the second bracket, and a limit assembly is also fixed on the top of the second bracket.

3. The simplified airtightness detection and laser repair welding fixture according to claim 2 is characterized in that: The limit assembly includes a limit rod, a limit shaft and a limit block. The limit block is fixedly mounted on the top of the second bracket, and the limit block is set as an opening. A limit shaft is passed through the limit block, and one end of the limit shaft is passed through the through hole of the brake disc. A limit rod is also fixed on the limit shaft. The limit rod is set perpendicular to the limit shaft. By limiting the limit rod at the opening of the limit block, the angle of the flip plate is limited.

4. The simplified airtightness detection and laser repair welding fixture according to claim 3 is characterized in that: The first clamping assembly includes a first clamping cylinder, a first displacement cylinder, a connecting frame and a first clamping plate. A connecting frame is fixedly installed on the top of the first slider, and the first clamping cylinder is fixedly installed on the crossbeam of the connecting frame. The piston rod of the first clamping cylinder passes through the crossbeam and is fixed to the first clamping plate. The first displacement cylinder is fixedly installed on the outer side of the first slider. The first slider is driven to move along the first slide rail through the extension and contraction of the piston rod of the first displacement cylinder, thereby driving the displacement of the first clamping assembly; wherein, there are multiple first clamping cylinders.

5. The simplified airtightness detection and laser repair welding fixture according to claim 4 is characterized in that: The second clamping assembly includes a second clamping cylinder, a second slide rail, a second slider, a second displacement cylinder and a second clamping plate. The second slide rail is fixedly installed at the bottom of the flip plate, the second slider is slidably installed on the second slide rail, the second clamping plate is fixedly installed on the second slider, and several second clamping cylinders are fixedly installed on the second clamping plate. The workpiece is clamped by the extension and retraction of the piston rod of the second clamping cylinder; a second displacement cylinder is also fixedly installed at the bottom of the flip plate, the second displacement cylinder is arranged parallel to the second slide rail, one end of the piston rod of the second displacement cylinder is connected to the second clamping plate, and the displacement of the second clamping plate on the second slide rail is realized by the extension and retraction of the telescopic rod of the second displacement cylinder.

6. The simplified airtightness detection and laser repair welding fixture according to claim 5, characterized in that: The positioning assembly includes a positioning cylinder, a rotating plate and a connecting ear plate. The connecting ear plate is fixedly installed on the outer side of the flip plate, and the positioning cylinder is fixedly installed on the outer side of the connecting ear plate. The piston rod of the positioning cylinder is connected to the positioning pressure arm through the rotating plate. The rotation of the positioning cylinder drives the movement of the positioning pressure arm to achieve positioning of the workpiece.

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