A welding device and process based on cylinder gasket production

Abstract

This invention relates to a welding equipment and process for cylinder gasket production, specifically in the field of gasket welding technology. It includes a laser welding machine body with a bracket and welding head mounted on it. The machine body is used to weld workpiece 1 and workpiece 2. Workpiece 1 has four through slots, each corresponding to one workpiece 2. Utilizing a ring-distributed multi-point pressing mode, pressure is evenly applied to the surface of the cylinder gasket workpiece to be welded, fully compacting the multi-layered metal sheet. The pressing contact position employs a low-friction rolling fit design, maintaining a continuous pressing state even when dynamically adjusting the position to avoid the welding path, ensuring more balanced force distribution across the workpiece. Reasonable space is reserved between structures, and combined with an overall rotating avoidance operation mode, the laser welding optical path is ensured to remain unobstructed throughout the process, achieving a continuous pressing and synchronous welding operation mode.

Description

Technical Field

[0001] This invention relates to the field of gasket welding technology, specifically to a welding equipment and process based on cylinder gasket production. Background Technology

[0002] Cylinder gaskets, as a core sealing component of engines, are typically composed of multiple layers of thin metal sheets, and their production relies on specialized laser welding equipment. This type of equipment usually uses a central locating pin to quickly align and position the layers, and then utilizes laser welding technology to fuse the edges or specific areas of the multiple sheets together. This equipment significantly improves assembly efficiency and welding precision, ensuring the structural stability and sealing performance of the gasket under high temperature and high pressure conditions, making it a key piece of equipment in modern flexible production lines.

[0003] However, existing welding equipment has significant drawbacks when clamping multi-layer thin sheet materials. Relying solely on a central locating pin for radial restraint, and given the low rigidity of the thin metal sheets themselves, edge warping or delamination due to localized micro-gaps between layers is highly likely during stacking. Conventional full-surface clamping plates obstruct the laser beam path, and therefore, the equipment often lacks an effective all-area clamping mechanism, resulting in insufficient interlayer adhesion during welding. This leads to quality problems such as incomplete welds, burn-through, or porosity. Summary of the Invention

[0004] The purpose of this invention is to enhance the bonding relationship between materials by setting up an internal support and downward pressure structure that automatically avoids the welding path. To achieve the above purpose, the invention adopts the following technical solution: A welding equipment based on cylinder gasket production includes a laser welding machine body, on which a bracket and a welding head are installed. The laser welding machine body is used to weld workpiece 1 and workpiece 2. Workpiece 1 has four through slots, each corresponding to one workpiece 2. The laser welding machine body is provided with a welding support assembly, which includes a triggering component and four acting components. The four acting components correspond to one workpiece 2. The acting components include four pressure rods arranged in a ring, with a gap between two adjacent pressure rods. This gap is used to expose the welding path of the welding head. The ends of the four pressure rods that are far apart from each other can be flipped upwards. After the four pressure rods are flipped upwards, their horizontal projections are not located on the loading and unloading paths of workpiece 1 and workpiece 2. The four pressure rods can rotate around the center of workpiece 2, so that the pressure rods rotate to avoid the welding action path of the welding head.

[0005] The ends of the four pressure rods, which are far apart from each other, are in low-friction rotational engagement with the top surface of workpiece 2. When the pressure rods are flipped to a horizontal state, they apply a downward clamping force to workpiece 2, making workpiece 2 and workpiece 1 fit tightly together. Each of the four pressure rods is provided with a limiting rod, which is L-shaped. It also includes four abutments arranged in a circumferential array. The four abutments can move at equal distances and are used to push the inner surfaces of workpiece 1 and workpiece 2, restricting the movement of workpiece 2 on workpiece 1. The triggering component includes a support plate, which is located at the bottom of workpiece 1 and can be raised and lowered. The top surface of the support plate is fixedly connected with four push blocks in a linear array. Each of the four push blocks corresponds to one workpiece 2. The push blocks are set as a cone shape that is narrow at the top and wide at the bottom.

[0006] The functional components also include a support frame fixedly connected to the connecting rod. Four struts are slidably connected in a circular array on the support frame. Each of the four struts has a push rod fixedly connected to its bottom end. The push rods are slidably connected to the support frame. Each of the four push rods has a guide block fixedly connected to its closest end. Each push rod has a tension spring fitted on it. Both ends of the tension spring are fixedly connected to the strut and the support frame. Four abutments are fixedly connected to the top ends of the four struts on their furthest sides. A rotating shaft is rotatably connected to the top of the support frame. The rotating shaft is connected to a synchronous belt drive. A support plate is fixedly connected to the top end of the rotating shaft. Four pressure rods are rotatably connected to the top end of the support plate. Each pressure rod has a torsion spring fixedly connected to it. The end of the torsion spring furthest from the pressure rod is fixedly connected to the support plate. A roller is rotatably connected to the bottom of each of the four pressure rods on their furthest sides. A limiting rod is fixedly connected to the top end of the support plate.

[0007] The triggering component also includes an electric telescopic rod, which includes a fixed shaft and a telescopic shaft. The fixed shaft of the electric telescopic rod is fixedly connected to the laser welding machine body. The telescopic shaft end of the electric telescopic rod faces upward and is fixedly connected to the bottom surface of the pallet. Two guide rods are symmetrically slidably connected to the pallet. The bottom ends of the guide rods are fixedly connected to the laser welding machine body. A connecting rod is fixedly connected to the laser welding machine body. A servo motor is fixedly connected to the laser welding machine body. The output shaft end of the servo motor faces upward and is connected to a synchronous belt. Each of the four push blocks has a poking rod fixedly connected to its top end. Each poking rod has a pressure plate rotatably connected to its top end.

[0008] Furthermore, each of the four push blocks corresponds to a rotating shaft, and the push blocks travel through the rotating shaft. The end of the guide block away from the support rod is set as an inclined surface, and the push blocks and guide blocks are pressed together.

[0009] Furthermore, the pressure plate and the four pressure rods are pressed together at their close ends. The bottom end of the limiting rod is used to assist the pressure rod to rotate to a horizontal state, and the top end of the limiting rod is used to limit the rotation angle of the pressure rod after it flips upward, so that after the pressure rod flips upward and contacts the top end of the limiting rod, the pressure rod as a whole is in an inclined state.

[0010] Furthermore, the pressure bar rolls against the workpiece two via a roller shaft, thereby achieving low-friction rotation on the workpiece two.

[0011] A welding process based on cylinder head gasket production includes the following steps:

[0012] Step 1: Place workpiece 1 on the top surface of the bracket, so that each through slot of workpiece 1 fits onto the top of the pressure plate, and then place four workpieces 2 into the corresponding through slot positions on workpiece 1.

[0013] Step 2: Drive the electric telescopic rod to extend, the support plate drives the push block to move up and pass into the support frame, the push block squeezes the guide block to make the four abutment blocks move outward at equal distances, and the inner support workpiece one and workpiece two are aligned and concentric.

[0014] Step 3: As the push block moves upward, the chuck rod drives the pressure plate to move upward, squeezing the four inclined pressure rods to rotate to the horizontal, and the roller shaft contacts the top surface of the workpiece to apply downward pressing force;

[0015] Step 4: Start welding with the welding head. At the same time, the servo motor drives the rotating shaft via the synchronous belt to rotate the support plate and pressure rod. The roller rolls to avoid the laser landing point of the welding head.

[0016] Further, in step five: after welding is completed, the electric telescopic rod retracts, the support plate moves down, the tension spring causes the stop block to retract and reset, and the torsion spring causes the pressure rod to flip upward and reset, and the welded part is removed from the bracket.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] Firstly, the internal support positioning method with inclined plane can automatically correct the concentricity of the cylinder head gasket workpiece to be welded. The friction generated by the internal support forms a double limit on the cylinder head gasket workpiece to be welded, which can not only fix the overall position of the workpiece, but also avoid problems such as workpiece displacement or rotation with the moving structure during operation. The positioning related structure can automatically retract after the power is removed. Each movement link does not interfere with each other, and the overall action is smooth and orderly.

[0019] Secondly, by employing a multi-point pressing mode with a ring distribution, the pressure can be applied evenly to the surface of the cylinder head gasket to be welded, fully compacting the multi-layer metal sheet. The pressing contact position adopts a low-friction rolling fit design, which can maintain the pressing state even when the position is dynamically adjusted to avoid the welding path, making the force on the workpiece more balanced. Reasonable space is reserved between the structures, and with the overall rotation avoidance operation mode, the laser welding light path can be guaranteed to be unobstructed throughout the process, realizing a continuous pressing and synchronous welding operation mode. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the overall device of the present invention;

[0021] Figure 2This is a schematic diagram showing the position of the workpiece and the welding head in this invention;

[0022] Figure 3 This is a cross-sectional schematic diagram of workpiece one and workpiece two of the present invention;

[0023] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0024] Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle;

[0025] Figure 6 This is a cross-sectional schematic diagram of the pallet and pusher block of the present invention;

[0026] Figure 7 For the present invention Figure 6 Enlarged view of point C in the middle;

[0027] Figure 8 This is a schematic diagram showing the positions of the servo motor and the electric telescopic rod of the present invention;

[0028] Figure 9 This is a schematic diagram showing the positions of the support frame and pressure bar of the present invention;

[0029] Figure 10 This is a schematic diagram showing the positions of the abutment and support rod of the present invention;

[0030] Figure 11 For the present invention Figure 10 Enlarged diagram of point D in the middle.

[0031] In the picture:

[0032] 11. Laser welding machine body; 12. Bracket; 13. Welding head; 14. Workpiece 1; 15. Workpiece 2;

[0033] 21. Electric telescopic rod; 22. Support plate; 23. Guide rod; 24. Connecting rod; 25. Support frame; 26. Rotating shaft; 27. Servo motor; 28. Synchronous belt; 29. ​​Push block; 210. Support rod; 211. Push rod; 212. Guide block; 213. Tension spring; 214. Abutment block; 215. Support plate; 216. Pressure rod; 217. Torsion spring; 218. Roller shaft; 219. Limiting rod; 220. Stamping rod; 221. Pressure plate. Detailed Implementation

[0034] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0035] Example 1:

[0036] Reference Figures 1 to 11 As shown, a welding equipment and process based on cylinder gasket production includes a laser welding machine body 11, a bracket 12 and a welding head 13 are installed on the laser welding machine body 11, and the laser welding machine body 11 is used to weld workpiece one 14 and workpiece two 15. Workpiece one 14 is provided with four through slots, each through slot corresponding to one workpiece two 15.

[0037] The laser welding machine body 11 is equipped with a welding support assembly, which includes a triggering component and four action components. The four action components correspond to a workpiece 15. Each action component includes four pressure rods 216 arranged in a ring around the center of workpiece 15. There is a gap between two adjacent pressure rods 216, which is used to expose the welding path of the welding head 13. The ends of the four pressure rods 216 that are far apart from each other can be flipped upwards. After the four pressure rods 216 are flipped upwards, their horizontal projections are not located on the loading and unloading paths of workpiece 14 and workpiece 25. The four pressure rods 216 can rotate around the center of workpiece 25, so that the pressure rods 216 rotate to avoid the welding action path of the welding head 13.

[0038] The ends of the four pressure rods 216 that are far apart from each other are in low-friction rotational engagement with the top surface of workpiece 2 15. When the pressure rods 216 are flipped to a horizontal state, they apply a downward clamping force to workpiece 2 15, so that workpiece 2 15 and workpiece 1 14 are in close engagement.

[0039] Each of the four pressure rods 216 is provided with a limiting rod 219. The limiting rod 219 is L-shaped and is used to limit the rotation angle of the pressure rod 216, so that the pressure rod 216 cannot rotate and remains in a vertical state.

[0040] It also includes four abutments 214 arranged in a circular array with the center of workpiece 2 15 as the center. The four abutments 214 can move at equal distances. The abutments 214 are used to push the inner surfaces of workpiece 1 14 and workpiece 2 15, restricting the movement of workpiece 2 15 on workpiece 1 14, so that workpiece 2 15 cannot rotate with the pressure rod 216.

[0041] The triggering component includes a support plate 22, which is located at the bottom of workpiece 14 and can be lifted and moved. The top surface of the support plate 22 is fixedly connected with four push blocks 29 in a straight array. Each of the four push blocks 29 corresponds to a workpiece 2 15. The push blocks 29 are set as a cone shape that is narrow at the top and wide at the bottom.

[0042] The triggering component also includes an electric telescopic rod 21, which includes a fixed shaft and a telescopic shaft. The fixed shaft of the electric telescopic rod 21 is fixedly connected to the laser welding machine body 11. The telescopic shaft end of the electric telescopic rod 21 faces upward and is fixedly connected to the bottom surface of the support plate 22. Two guide rods 23 are symmetrically slidably connected on the support plate 22. The bottom end of the guide rods 23 is fixedly connected to the laser welding machine body 11. A connecting rod 24 is fixedly connected to the laser welding machine body 11. A servo motor 27 is fixedly connected to the laser welding machine body 11. The output shaft end of the servo motor 27 faces upward and is connected to a synchronous belt 28. A poking rod 220 is fixedly connected to the top of each of the four push blocks 29. A pressure plate 221 is rotatably connected to the top of each poking rod 220.

[0043] The functional components also include a support frame 25 fixedly connected to the connecting rod 24. Four support rods 210 are slidably connected in a circular array on the support frame 25. Each of the four support rods 210 has a push rod 211 fixedly connected to its bottom end. The push rods 211 are slidably connected to the support frame 25. A guide block 212 is fixedly connected to the end of each of the four push rods 211 that is close to each other. A tension spring 213 is fitted onto each push rod 211. Both ends of the tension spring 213 are fixedly connected to the support rod 210 and the support frame 25. Four abutments 214 are fixedly connected to the four support rods respectively. At the top of the side of 210 that are far apart from each other, the top of the support frame 25 is rotatably connected to a rotating shaft 26. The rotating shaft 26 is connected to the synchronous belt 28 for transmission. The top of the rotating shaft 26 is fixedly connected to a support plate 215. Four pressure rods 216 are rotatably connected to the top of the support plate 215. Each pressure rod 216 is fixedly connected to a torsion spring 217. The end of the torsion spring 217 that is far away from the pressure rod 216 is fixedly connected to the support plate 215. At the bottom of the four pressure rods 216 that are far apart from each other, a roller shaft 218 is rotatably connected. The limiting rod 219 is fixedly connected to the top of the support plate 215.

[0044] Specifically: when workpiece 14 and workpiece 2 15 need to be welded, workpiece 14 is placed on bracket 12, so that workpiece 14 is suspended in the air inside the laser welding machine body 11.

[0045] Wherein: the welding head 13 is mounted on the laser welding machine body 11 via an existing moving module, so that the welding head 13 can move to a position on the laser welding machine body 11 according to the preset welding path.

[0046] The welding head 13 and the laser welding machine body 11 are both existing known technologies and will not be described in detail here.

[0047] Among them: four push blocks 29 correspond to one rotating shaft 26 respectively, the push blocks 29 pass through the rotating shaft 26, and the end of the guide block 212 away from the support rod 210 is set as an inclined surface, and the push blocks 29 and the guide blocks 212 are pressed together.

[0048] It should be noted that the synchronous belt 28 is a known existing technology. The inner ring surface of the synchronous belt 28 is a toothed surface. The synchronous belt 28 is connected to the output shaft of the servo motor 27 and the four rotating shafts 26. The outer ring surface of the rotating shaft 26 is set as a toothed surface. Through the meshing of the synchronous belt 28 and the toothed surface of the rotating shaft 26, the output shaft of the servo motor 27 can drive the four rotating shafts 26 to rotate synchronously when the servo motor 27 is running.

[0049] Wherein: the pressure rod 216 rolls against the workpiece 15 through the roller 218, thereby achieving low-friction rotation on the workpiece 15.

[0050] Wherein: the pressure plate 221 and the four pressure rods 216 are pressed together at one end, the bottom end of the limiting rod 219 is used to assist the pressure rod 216 to rotate to a horizontal state, and the top end of the limiting rod 219 is used to limit the rotation angle of the pressure rod 216 after it flips upward, so that after the pressure rod 216 flips upward and touches the top end of the limiting rod 219, the pressure rod 216 is in an inclined state, the function of which is to facilitate the pressure plate 221 to touch and press the pressure rod 216.

[0051] It should be noted that the top surface of the abutment block 214 is slightly lower than the top surface of the workpiece 2 15. The height of the abutment block 214 covers the inner surfaces of the workpiece 1 14 and the workpiece 2 15. Its function is to enable the abutment block 214 to support the workpiece 1 14 and the workpiece 2 15 simultaneously, and to ensure that the abutment block 214 does not interfere with the pushing and rotating of the pressure rod 216 on the workpiece 2 15.

[0052] In the initial state, that is, before the welding operations of workpiece 14 and workpiece 25 have been carried out, the structural states of the welding bracket assembly are as follows:

[0053] The servo motor 27 is not running, the telescopic shaft end of the electric telescopic rod 21 is fully retracted, the push block 29 has not yet entered the support frame 25, the pressure plate 221 is not in contact with the pressure rod 216, the torsion spring 217 has not undergone elastic deformation, the end of the pressure rod 216 away from the limit rod 219 is flipped upward, the pressure rod 216 is tilted, the pressure rod 216 is in contact with the top of the limit rod 219, the tension spring 213 has not undergone elastic deformation, the four guide blocks 212 on the same support frame 25 are close to each other at the minimum distance, the guide blocks 212 are not in contact with the push block 29, and the four support rods 210 on the same support frame 25 are close to each other at the minimum distance.

[0054] In the working state, when it is necessary to weld workpiece 14 and workpiece 25, the user places workpiece 14 to be welded on the top surface of bracket 12, and makes each through slot of workpiece 14 fit on the top of a pressure plate 221. After completion, the user places the four workpieces 25 on the four through slots of workpiece 14 respectively. At this time, the user runs the welding bracket assembly.

[0055] At this time, the user drives the electric telescopic rod 21 to operate, causing the telescopic shaft of the electric telescopic rod 21 to extend upward. The telescopic shaft end of the electric telescopic rod 21 drives the support plate 22 to move upward synchronously, causing the support plate 22 to slide upward on the two guide rods 23. The support plate 22 drives the four push blocks 29 to move upward synchronously, causing the push blocks 29 to move upward and gradually penetrate into the support frame 25. At this time, the push blocks 29 move upward within the support frame 25. During this process, the push blocks 29 abut against and squeeze the four guide blocks 212 within the support frame 25. Under the guidance of the inclined surfaces of the push blocks 29 and the guide blocks 212, the four guide blocks 212 are squeezed to move away from each other. As a result, the push rods 211 and support rods 210 corresponding to the four guide blocks 212 move away from each other at equal distances with the push blocks 29 as the center, causing the support rods 210 and push rods 211 to slide on the support frame 25. At the same time, the tension spring 213 undergoes elastic deformation.

[0056] At this time, the four support rods 210 on the same support frame 25 drive the corresponding abutment blocks 214 to move away from each other at equal distances. During the movement of the abutment blocks 214, the abutment blocks 214 abut against the inner walls of workpiece 14 and workpiece 25. As the four abutment blocks 214 move at equal distances, the position of workpiece 25 on workpiece 14 is pushed and corrected to a concentric state. When the abutment blocks 214 of the four working parts all support the corresponding workpiece 25, the abutment blocks 214 abut against the inner surfaces of workpiece 14 and workpiece 25 at the same time, correcting the four workpiece 25 on workpiece 14 to the position required for welding, and limiting workpiece 14 on the bracket 12 by the friction of the inner support, while workpiece 25 is also limited on workpiece 25 by the inner support of the abutment blocks 214.

[0057] As the push block 29 moves upward, it drives the abutment rod 220 to move upward simultaneously. The abutment rod 220 drives the pressure plate 221 to move upward until it touches the end of the four pressure rods 216 that are close to each other. Due to the limiting action of the limiting rod 219, the four pressure rods 216 are in an inclined state at this time. As the pressure plate 221 moves upward, it squeezes the four pressure rods 216, causing the four pressure rods 216 to gradually rotate on the support plate 215 to a horizontal state. At the same time, as the pressure rods 216 rotate, the torsion spring 217 generates elastic deformation accordingly. As the pressure rods 216 rotate, they touch the bottom end of the limiting rod 219. At this time, the limiting rod 219 restricts the pressure rods 216 from continuing to rotate, and the pressure plate 221 can no longer push the pressure rods 216 to rotate. At this time, the pressure rods 216 rotate to a horizontal state, and the telescopic shaft of the electric telescopic rod 21 no longer extends, so that the position of the pressure rods 216 and the abutment block 214 is fixed.

[0058] During the process of the pressure rod 216 flipping to a horizontal state, the pressure rod 216 drives the roller 218 to rotate and approach the top surface of the second workpiece 15. When the pressure rod 216 is limited to a horizontal state, the roller 218 abuts and presses against the top surface of the second workpiece 15. As the pressure rod 216 is limited, the state of the roller 218 abutting and pressing against the second workpiece 15 is also fixed. At this time, the pressure rod 216 applies a downward pushing force to the second workpiece 15 through the roller 218, thereby pushing the second workpiece 15 to fit tightly against the first workpiece 14.

[0059] At this time, the user can drive the welding head 13 to weld workpiece 14 and workpiece 2 15. During the welding process, the welding head 13 needs to move to weld different mating positions of workpiece 14 and workpiece 2 15. That is, the laser welding path of the welding head 13 on workpiece 14 and workpiece 2 15 will change. At this time, the user can drive the servo motor 27 to run. As the servo motor 27 runs, the output shaft of the servo motor 27 drives four rotating shafts 26 to rotate synchronously through the synchronous belt 28. The rotating shafts 26 drive the pressure rods 216 to rotate synchronously through the support plate 215. Then, the pressure rods 216 rotate while maintaining the roller shaft 218 in a state of contact and compression with workpiece 2 15. That is, the four pressure rods 216 rotate on workpiece 2 14 and workpiece 2 15. When the center of workpiece 15 rotates, and the pressure rod 216 rotates, the roller 218 rolls on the top surface of workpiece 25, applying downward pressure evenly to different positions of workpiece 25, further enhancing the tight fit between workpiece 14 and workpiece 25. The rotation of the pressure rod 216 causes the position of the pressure rod 216 overlapping on the top surface of workpiece 25 to change. This position change is used to avoid the laser welding point of the welding head 13. During the welding process of the welding head 13 on workpiece 14 and workpiece 25, the pressure rod 216 always rotates to avoid the laser welding point of the welding head 13. The laser welding point of the welding head 13 is always located in the gap between the four pressure rods 216, thus flexibly avoiding the welding point of the welding head 13 while ensuring pressure on workpiece 25.

[0060] It should be noted that during the rotation of the pressure rod 216, due to the contact and compression between the pressure plate 221 and the pressure rod 216, the pressure plate 221 is driven to rotate synchronously with the pressure rod 216. The rotational cooperation between the piercing rod 220 and the pressure plate 221 ensures that the pressure plate 221 will not interfere with the push block 29 when rotating.

[0061] After welding head 13 is completed, the welding of workpiece 14 and workpiece 25 is finished. The user needs to remove workpiece 14 and workpiece 25 for the next welding operation. At this time, the user stops the operation of servo motor 27 and drives the telescopic shaft of electric telescopic rod 21 to retract. As the telescopic shaft of electric telescopic rod 21 retracts, the support plate 22 drives the push block 29 to move down. Then, under the elastic reset action of tension spring 213, tension spring 213 pulls support rod 210 to move towards push block 29, so that the four abutments 214 on the same support frame 25 move inward at equal distances. The abutments 214 no longer abut against and squeeze the inner wall of workpiece 14 and workpiece 25. When push block 29 moves down, it drives pressure plate 22 through piercing rod 220. 1. The pressure plate 221 moves downward synchronously, so that the pressure bar 221 no longer presses the pressure bar 216. Then, under the elastic reset action of the torsion spring 217, the ends of the four pressure bars 216 on the same support frame 25 that are far apart from each other flip upward, so that the pressure bar 216 no longer presses the workpiece 15 through the roller 218 until the pressure bar 216 flips up to the top of the limit bar 219. At this time, the pressure bar 216 stops flipping and resets to an inclined state. As the pressure bar 216 flips upward, the horizontal projection of the four pressure bars 216 is no longer located on the upward movement path of the workpiece 14. That is, the pressure bar 216 does not interfere with the upward movement of the workpiece 14. At this time, the user can take the welded workpiece 15 from the bracket 12. At this time, the various structures of the welding bracket assembly are reset.

[0062] In summary, the following beneficial effects can be achieved through the design of the link support assembly:

[0063] Firstly, the internal support positioning method with inclined plane can automatically correct the concentricity of the cylinder head gasket workpiece to be welded. The friction generated by the internal support forms a double limit on the cylinder head gasket workpiece to be welded, which can not only fix the overall position of the workpiece, but also avoid problems such as workpiece displacement or rotation with the moving structure during operation. The positioning related structure can automatically retract after the power is removed. Each movement link does not interfere with each other, and the overall action is smooth and orderly.

[0064] Secondly, by employing a multi-point pressing mode with a ring distribution, the pressure can be applied evenly to the surface of the cylinder head gasket to be welded, fully compacting the multi-layer metal sheet. The pressing contact position adopts a low-friction rolling fit design, which can maintain the pressing state even when the position is dynamically adjusted to avoid the welding path, making the force on the workpiece more balanced. Reasonable space is reserved between the structures, and with the overall rotation avoidance operation mode, the laser welding light path can be guaranteed to be unobstructed throughout the process, realizing a continuous pressing and synchronous welding operation mode.

[0065] Example 2:

[0066] A welding process based on cylinder head gasket production includes the following steps:

[0067] Step 1: Place workpiece 14 on the top surface of bracket 12, so that each through slot of workpiece 14 fits on the top of pressure plate 221, and then place four workpieces 25 into the corresponding through slot positions on workpiece 14.

[0068] Step 2: Drive the electric telescopic rod 21 to extend, the support plate 22 drives the push block 29 to move up and pass into the support frame 25, the push block 29 squeezes the guide block 212 to make the four abutment blocks 214 move outward at equal distances, and the inner support workpiece 1 14 and workpiece 2 15 are aligned and concentric.

[0069] Step 3: Push block 29 moves upward while stick rod 220 drives pressure plate 221 to move upward, squeezing four inclined pressure rods 216 to rotate to horizontal, and roller shaft 218 abuts against the top surface of workpiece 2 15 to apply downward pressing force.

[0070] Step 4: Start welding head 13. At the same time, servo motor 27 drives shaft 26 via synchronous belt 28 to rotate support plate 215 and pressure rod 216. Roller 218 rolls to avoid the laser landing point of welding head 13.

[0071] Step 5: After welding is completed, the electric telescopic rod 21 retracts, the support plate 22 moves down, the tension spring 213 causes the stop block 214 to retract and reset, the torsion spring 217 causes the pressure rod 216 to flip upward and reset, and the welded part is removed from the bracket 12.

[0072] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A welding device based on cylinder gasket production, comprising a laser welding machine body (11), a bracket (12) and a welding head (13) mounted on the laser welding machine body (11), the laser welding machine body (11) being used to weld workpiece one (14) and workpiece two (15), workpiece one (14) having four through slots, each through slot corresponding to one workpiece two (15), characterized in that: The laser welding machine body (11) is provided with a welding support assembly. The welding support assembly includes a triggering component and four action components. The four action components correspond to a workpiece two (15) respectively. The action components include four pressure rods (216) arranged in a ring. There is a gap between two adjacent pressure rods (216). The gap is used to expose the welding path of the welding head (13). The ends of the four pressure rods (216) that are far apart from each other can be flipped upward. After the four pressure rods (216) are flipped upward, their horizontal projection is not located on the loading and unloading path of workpiece one (14) and workpiece two (15). The four pressure rods (216) can rotate with the center of workpiece two (15) as the center, so that the pressure rods (216) rotate to avoid the welding action path of the welding head (13). The ends of the four pressure rods (216) that are far apart from each other are in low-friction rotational engagement with the top surface of workpiece two (15). When the pressure rods (216) are flipped to a horizontal state, they apply a downward clamping force to workpiece two (15), so that workpiece two (15) and workpiece one (14) are tightly engaged. Each of the four pressure rods (216) is provided with a limiting rod (219), which is L-shaped. It also includes four abutments (214) arranged in a circumferential array. The four abutments (214) can move at equal distances. The moving, abutting block (214) is used to push the inner surfaces of workpiece one (14) and workpiece two (15) to restrict the movement of workpiece two (15) on workpiece one (14); the triggering component includes a support plate (22), which is located at the bottom of workpiece one (14) and can be lifted and moved. The top surface of the support plate (22) is fixedly connected with four push blocks (29) in a straight array. The four push blocks (29) correspond to one workpiece two (15) respectively. The push blocks (29) are set as a cone shape that is narrow at the top and wide at the bottom. The functional components also include a support frame (25) fixedly connected to the connecting rod (24). Four struts (210) are slidably connected in a circular array on the support frame (25). Each of the four struts (210) has a push rod (211) fixedly connected to its bottom end. The push rods (211) are slidably connected to the support frame (25). Each push rod (211) has a guide block (212) fixedly connected to one end close to the other. Each push rod (211) is fitted with a tension spring (213). Both ends of the tension springs (213) are fixedly connected to the struts (210) and the support frame (25). Four abutments (214) are fixedly connected to the four struts (210, ... 10) At the top of the support frame (25) on the side away from each other, a rotating shaft (26) is rotatably connected to the top of the support frame (25). The rotating shaft (26) is connected to the synchronous belt (28) for transmission. A support plate (215) is fixedly connected to the top of the rotating shaft (26). Four pressure rods (216) are rotatably connected to the top of the support plate (215). A torsion spring (217) is fixedly connected to each pressure rod (216). The end of the torsion spring (217) away from the pressure rod (216) is fixedly connected to the support plate (215). A roller shaft (218) is rotatably connected to the bottom of the four pressure rods (216) at the ends away from each other. A limiting rod (219) is fixedly connected to the top of the support plate (215). The triggering component also includes an electric telescopic rod (21), which includes a fixed shaft and a telescopic shaft. The fixed shaft of the electric telescopic rod (21) is fixedly connected to the laser welding machine body (11). The telescopic shaft end of the electric telescopic rod (21) faces upward and is fixedly connected to the bottom surface of the tray (22). Two guide rods (23) are symmetrically slidably connected on the tray (22). The bottom end of the guide rod (23) is fixedly connected to the laser welding machine body (11). A connecting rod (24) is fixedly connected on the laser welding machine body (11). A servo motor (27) is fixedly connected on the laser welding machine body (11). The output shaft end of the servo motor (27) faces upward and is connected to a synchronous belt (28). A poking rod (220) is fixedly connected to the top of each of the four push blocks (29). A pressure plate (221) is rotatably connected to the top of each poking rod (220).

2. The welding equipment based on cylinder gasket production according to claim 1, characterized in that: The four push blocks (29) correspond to a rotating shaft (26) respectively. The push blocks (29) pass through the rotating shaft (26). The end of the guide block (212) away from the support rod (210) is set as an inclined surface. The push blocks (29) and the guide block (212) are pressed together.

3. The welding equipment based on cylinder gasket production according to claim 1, characterized in that: The pressure plate (221) and the four pressure rods (216) are pressed together at their close ends. The bottom end of the limiting rod (219) is used to assist the pressure rod (216) to rotate in a horizontal state. The top end of the limiting rod (219) is used to limit the rotation angle of the pressure rod (216) after it flips upward, so that after the pressure rod (216) flips upward and touches the top end of the limiting rod (219), the pressure rod (216) is tilted as a whole.

4. The welding equipment based on cylinder gasket production according to claim 1, characterized in that: The pressure bar (216) rolls against the workpiece (15) via the roller (218), thereby achieving low-friction rotation on the workpiece (15).

5. A welding process based on cylinder head gasket production, characterized in that: The application of a welding equipment based on cylinder gasket production as described in any one of claims 1-4 includes the following steps: Step 1: Place workpiece 1 (14) on the top surface of bracket (12) so that each through slot of workpiece 1 (14) fits on the top of pressure plate (221), and then place four workpieces 2 (15) into the corresponding through slot positions on workpiece 1 (14). Step 2: Drive the electric telescopic rod (21) to extend, the support plate (22) drives the push block (29) to move up and pass into the support frame (25), the push block (29) squeezes the guide block (212) so that the four abutment blocks (214) move outward at equal distances, and the inner support workpiece one (14) and workpiece two (15) are aligned and concentric. Step 3: Push block (29) moves up while piercing rod (220) drives pressure plate (221) to move up, squeezing four inclined pressure rods (216) to rotate to the horizontal, and roller (218) abuts against the top surface of workpiece 2 (15) to apply downward pressing force; Step 4: Start welding head (13) to weld. At the same time, servo motor (27) drives shaft (26) via synchronous belt (28) to rotate support plate (215) and pressure rod (216). Roller (218) rolls to avoid the laser landing point of welding head (13).

6. The welding process based on cylinder gasket production according to claim 5, characterized in that: Step 5: After welding is completed, the electric telescopic rod (21) retracts, the support plate (22) moves down, the tension spring (213) causes the stop block (214) to retract and reset, the torsion spring (217) causes the pressure rod (216) to flip up and reset, and the welded part is taken away from the bracket (12).

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