A rotatable laser welding device for processing automotive safety parts

Abstract

The present invention relates to the field of welding technology, and in particular to a rotatable laser welding device for processing automobile safety parts, comprising a processing platform, a support column, a supporting unit and a straightening unit; the present invention can solve the following problems existing in the prior art: when a pipe fitting is clamped, the pipe fitting cannot be limited to maintain a level, the pipe fitting is not squeezed together during rotation, and lacks stability, so a gap is easily generated at the butt joint of two pipe fittings during rotation, resulting in the two pipe fittings being unable to be on the same axis, affecting the butt joint accuracy and welding effect between the two pipe fittings; the present invention can adaptively limit and fix the drive shaft and the shaft fork respectively, so that they are accurately butted without adjustment; during the welding process, the welding gun is controlled to rotate so that the drive shaft and the shaft fork remain relatively still, thereby ensuring the stability of the drive shaft and the shaft fork, and avoiding the drive shaft and the shaft fork being unable to be on the same axis and affecting the welding accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a rotatable laser welding device used for processing automobile safety parts. Background Art

[0002] Auto parts refer to the various units that make up the whole of a car and the products that serve the automobile manufacturing. The transmission system of a car usually includes the engine, clutch, gearbox and drive shaft, among which the automobile drive shaft is an important component connecting the engine and the drive wheels. It needs to withstand large torque and stress, and is mainly used to ensure the safety and reliability of the car during driving. During the manufacturing process, the drive shaft needs to be welded with a shaft fork at its end to facilitate connection with other parts. In order to ensure the welding strength, rotary welding is required around the outer wall of the drive shaft.

[0003] The prior art also provides technical solutions for welding automobile parts. In order to make a more accurate comparison, a Chinese patent with publication number CN118143440A discloses an automobile parts welding device, which is used for rotational welding of automobile pipelines. Specifically, it includes a processing table, a lower side of the processing table is fixedly provided with an anti-tilt frame, one side of the processing table is provided with a switchable clamping assembly, one side of the switchable clamping assembly is provided with a rotary drive assembly, and the upper side of the processing table is provided with a self-receiving welding assembly; the switchable clamping assembly includes a plurality of adjusting wheels and a plurality of clamping wheels for clamping and fixing the pipe fittings.

[0004] When the above-mentioned prior art is in use, two pipe fittings are placed end to end between the adjusting wheel and the clamping wheel, and then the pipe fittings are clamped and fixed between the adjusting wheel and the clamping wheel; then the pipe fittings are driven to rotate automatically during welding, so that welding in the circumferential direction can be completed at one time. After welding is completed, the pipe fittings can be clamped and fixed or removed, and other pipe fittings can be installed, clamped, fixed or removed during welding.

[0005] However, the above-mentioned prior art still has some shortcomings in actual use:

[0006] 1. Although the above-mentioned prior art can install, clamp, fix or disassemble other pipe fittings during welding, manual adjustment is required and automatic adjustment is not possible, which makes the operation cumbersome. In addition, there are safety hazards when clamping pipe fittings during welding, and when clamping other pipe fittings, the pipe fittings cannot be limited and kept horizontal, so that the butt ends of the two pipe fittings are difficult to maintain the same axis, thereby affecting the butt joint accuracy and welding effect between the two pipe fittings.

[0007] 2. In addition, the above-mentioned prior art requires the two pipes to rotate during welding to achieve circular welding, but the two pipes are not squeezed together during the rotation process, so that the pipes lack the necessary stability. Therefore, it is easy for a gap to form at the joint of the two pipes during the rotation process, which leads to the two pipes not being on the same axis.

[0008] Therefore, under the above-stated viewpoint, there is still room for improvement in the existing welding methods for automotive parts. Summary of the invention

[0009] In order to solve the above problems, the present invention provides a rotatable laser welding device for processing automobile safety parts, including a processing platform, a support column is arranged in the middle of the upper end of the processing platform, a supporting unit for fixing the axle fork and a straightening unit for clamping the transmission shaft are installed on the support column, and the straightening unit is located above the supporting unit.

[0010] The supporting unit comprises a linkage block for placing the shaft fork, on which a welding assembly for welding the transmission shaft and the shaft fork is installed, and the straightening unit comprises two clamping plates which are arranged opposite to each other and are used for clamping the transmission shaft.

[0011] As a preferred technical solution of the present invention, the supporting unit also includes a storage groove opened at the upper end of the linkage block, and a top support block for supporting and limiting the axle fork is installed on the bottom wall of the storage groove, and two pushing groups are symmetrically arranged on the inner side wall of the storage groove along the width direction of the top support block, and each pushing group includes two actuator plates symmetrically distributed along the length direction of the top support block, and a support spring rod is installed between the actuator plate and the inner side wall of the storage groove.

[0012] As a preferred technical solution of the present invention, both side walls of the top support block in the width direction are provided with installation grooves, a top extension spring rod is arranged inside the installation groove, and a resistance block is arranged at one end of the top extension spring rod close to the outside of the top support block.

[0013] As a preferred technical solution of the present invention, a connecting plate located in the installation groove is installed on the outer wall of the resistance block, a supporting plate is arranged on the side of the connecting plate away from the installation groove through a plurality of elastic parts, a plurality of anti-slip strips are arranged equidistantly from top to bottom on the side of the supporting plate away from the connecting plate, and a through hole for passing the resistance block is opened on the supporting plate.

[0014] As a preferred technical solution of the present invention, the welding assembly includes an annular support frame sleeved on the outer wall of the linkage block, a bracket is installed on either side of the upper end of the annular support frame, and a welding gun is arranged on the top of the bracket.

[0015] As a preferred technical solution of the present invention, the outer wall of the support column is provided with two control rings which are respectively flush with the clamping plate and the linkage block, and driving arms are respectively provided between the upper and lower control rings and the clamping plate and the linkage block.

[0016] As a preferred technical solution of the present invention, the support column is rotatably installed on the upper end of the processing platform, and the welding assembly also includes a driving motor arranged at the bottom of the processing platform through a motor seat. The output shaft at the top of the driving motor passes through the processing platform and is connected to the bottom of the support column. An outer gear ring is provided at the lower end of the annular support frame, and an arc-shaped rack plate meshing with the outer gear ring is provided at the upper end of the processing platform.

[0017] As a preferred technical solution of the present invention, the number of the linkage blocks and clamping plates is multiple and evenly distributed along the support column ring. The multiple linkage blocks and clamping plates are respectively connected to the driving arms between the control rings. An annular slide groove is opened at the upper end of the processing platform, and the lower ends of the multiple linkage blocks are equipped with lifting columns that are slidably docked in the annular slide groove.

[0018] As a preferred technical solution of the present invention, the clamping plate is an arc-shaped structure, and the opposite sides of the two relatively arranged clamping plates are both arc-shaped concave surfaces. The straightening unit also includes a guide plate that is rotatably installed on the side of the clamping plate away from the driving arm through a torsion spring, and the side of the guide plate away from the clamping plate has an inclined edge extending outward.

[0019] As a preferred technical solution of the present invention, elastic pads are installed on opposite sides of the two clamping plates arranged opposite to each other, and a plurality of vertical columns are rotatably arranged on one side of the elastic pad close to the axis of the clamping plate.

[0020] In summary, the present application includes at least one of the following beneficial technical effects:

[0021] 1. The present invention limits and fixes the transmission shaft and the shaft fork respectively through the supporting unit and the straightening unit, so that they can be accurately docked, and can adaptively limit the transmission shaft and the shaft fork respectively without adjustment, thereby improving the limiting efficiency of the transmission shaft and the shaft fork; in addition, during the welding process, the welding gun is controlled to rotationally weld the gap between the transmission shaft and the shaft fork, so that the transmission shaft and the shaft fork always remain in a relatively static state, thereby ensuring the stability of the transmission shaft and the shaft fork, and avoiding the transmission shaft and the shaft fork from not being on the same axis and affecting the welding accuracy.

[0022] 2. The present invention supports and limits the shaft fork through the actuator plate under the action of the supporting spring rod, so as to avoid the lack of stability during welding and affect the welding effect. The shaft fork is located in the middle of the storage groove under the extrusion force of the actuator plate, so as to facilitate the precise docking of the shaft fork with the transmission shaft above it.

[0023] 3. The present invention can further limit the shaft fork by abutting the abutment block against the mounting hole of the shaft fork under the action of the extension spring rod, thereby preventing the shaft fork from loosening, and further supporting and limiting the shaft fork by abutting the two inner side walls of the shaft fork opening by the supporting plate, thereby preventing the shaft fork from being easily skewed due to external force and affecting the welding effect.

[0024] 4. The present invention drives the support column to rotate by driving the motor. During the period when the support column drives the linkage block and the clamping plate to rotate as a whole through the control ring and the driving arm, the annular support frame can drive the bracket and the welding gun to rotate through the mutual cooperation between the outer gear ring and the arc-shaped rack plate, so that the welding gun can rotationally weld the gap between the transmission shaft and the shaft fork, and then can fully weld the annular gap to prevent omissions and affect the welding strength.

[0025] 5. The present invention facilitates the rapid installation of the transmission shaft through the guide plate, and then the elastic pad can be pressed against the outer wall of the transmission shaft to clamp it, and the vertical column can limit the vertical direction of the transmission shaft, so that the transmission shaft is clamped in multiple directions by multiple vertical columns on the basis of being clamped and limited by the elastic pad, thereby ensuring that the transmission shaft always remains in a vertical state, and further ensuring the docking accuracy between the transmission shaft and the shaft fork.

[0026] 6. When the present invention drives the linkage block, the clamping plate, the transmission shaft, the shaft fork and the connecting frame to move circumferentially as a whole through the support column, the connecting frame drives the supporting rib to move to the upper end of the arc-shaped bracket and drives the inclined pressure plate to move upward as a whole. The inclined pressure plate applies a pushing force to the push rod and drives the fastening plate to further clamp and fix the transmission shaft through the elastic pad, so as to ensure the stability of the transmission shaft during the welding process and prevent the transmission shaft from tilting and shaking, which affects the welding accuracy and welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0028] Figure 1 It is a first structural schematic diagram of the present invention.

[0029] Figure 2 It is a second structural schematic diagram of the present invention.

[0030] Figure 3 It is a schematic diagram of the structure between the processing platform and the linkage block of the present invention.

[0031] Figure 4 It is a schematic diagram of the internal structure of the linkage block of the present invention.

[0032] Figure 5 It is a schematic diagram of the internal structure between the linkage block and the top support block of the present invention.

[0033] Figure 6 It is a structural schematic diagram of the righting unit of the present invention.

[0034] Figure 7 It is a schematic diagram of the structure among the linkage block, the clamping plate and the locking unit of the present invention.

[0035] Figure 8It is a structural schematic diagram of the locking unit of the present invention.

[0036] Fig. 9 The present invention Figure 8 A partial enlarged view of point A.

[0037] In the figure, 1, processing platform; 11, annular slide; 2, support column; 21, control ring; 22, driving arm; 3, supporting unit; 31, linkage block; 311, lifting column; 32, welding assembly; 321, annular support frame; 322, bracket; 323, welding gun; 324, driving motor; 325, outer gear ring; 326, arc-shaped rack plate; 33, storage groove; 34, top support block; 341, top extension spring rod; 342, resistance block; 343, connecting plate ; 344, elastic member; 345, supporting plate; 346, anti-slip strip; 35, executive plate; 36, supporting spring rod; 4, straightening unit; 41, clamping plate; 42, guide plate; 43, elastic pad; 44, vertical column; 5, locking unit; 51, push rod; 52, fastening plate; 53, contraction spring; 54, auxiliary plate; 55, pushing spring rod; 56, connecting frame; 57, positioning block; 58, inclined pressure plate; 59, arc bracket; 50, supporting rib. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-Figure 9 Embodiments of the present invention are described in detail.

[0039] The embodiment of the present application discloses a rotatable laser welding device for processing automobile safety parts. It should be noted that the rotatable laser welding device for processing automobile safety parts of the present application is mainly used in the process of welding the drive shaft and the shaft fork of the automobile. In terms of technical effect, the drive shaft and the shaft fork can be limited and fixed respectively, and then the annular gap at the butt joint can be rotationally welded to prevent omissions and affect the welding strength; in particular, when welding the drive shaft and the shaft fork, the gap between the drive shaft and the shaft fork is rotationally welded, during which the drive shaft and the shaft fork always remain in a relatively static state, thereby ensuring the stability of the drive shaft and the shaft fork, and avoiding the drive shaft and the shaft fork from being unable to be on the same axis and affecting the welding accuracy; further, the rotatable laser welding device for processing automobile safety parts can also enable the drive shaft and the shaft fork to be quickly installed and disassembled, and after installation, it can ensure that the drive shaft always remains in a vertical state, thereby ensuring the butt joint accuracy between the drive shaft and the shaft fork. Example

[0040] Reference Figure 1 and Figure 2As shown, a rotatable laser welding device for processing automobile safety parts includes a processing platform 1, a support column 2 is arranged in the middle of the upper end of the processing platform 1, a supporting unit 3 for fixing the shaft fork and a straightening unit 4 for clamping the transmission shaft are installed on the support column 2, and the straightening unit 4 is located above the supporting unit 3.

[0041] Furthermore, in this embodiment, the supporting unit 3 includes a linkage block 31 for placing the shaft fork, and a welding assembly 32 for welding the transmission shaft and the shaft fork is installed on the linkage block 31. The straightening unit 4 includes two clamping plates 41 arranged opposite to each other and used to clamp the transmission shaft.

[0042] During the specific implementation process, the shaft fork and the transmission shaft are first installed on the supporting unit 3 and the straightening unit 4 respectively, so that the bottom of the transmission shaft and the top of the shaft fork are connected to each other and are on the same axis. Then, the joint between the transmission shaft and the shaft fork is rotationally welded by the welding assembly 32, so that the welding strength between the transmission shaft and the shaft fork can be enhanced by rotation welding.

[0043] Reference Figure 3 and Figure 4 As shown, in order to ensure stable welding between the transmission shaft and the shaft fork, it is necessary to ensure the stability of the shaft fork during the welding process. Based on this, in this embodiment, the shaft fork can be supported and fixed accordingly. Specifically, a supporting unit 3 is provided in this embodiment, and the supporting unit 3 also includes a storage groove 33 opened at the upper end of the linkage block 31. The inner bottom wall of the storage groove 33 is installed with a top support block 34 for supporting and limiting the shaft fork. The inner side wall of the storage groove 33 is symmetrically provided with two pushing groups along the width direction of the top support block 34. Each pushing group includes two actuator plates 35 symmetrically distributed along the length direction of the top support block 34. A support spring rod 36 is installed between the actuator plate 35 and the inner side wall of the storage groove 33. The support spring rod 36 always applies a pushing force to the actuator plate 35, so that the two actuator plates 35 of each pushing group are close to each other under the action of the support spring rod 36.

[0044] During the specific implementation process, the shaft fork is inserted into the receiving groove 33 with the opening facing downward, and the opening of the shaft fork is covered on the outside of the top support block 34. During this period, the actuator plate 35 applies a pushing force to the shaft fork under the action of the supporting spring rod 36, so that both sides of the shaft fork are subjected to equal squeezing forces, so that the shaft fork can be supported and limited, avoiding the lack of stability during welding and affecting the welding effect. The shaft fork is located in the middle of the receiving groove 33 under the squeezing force of the actuator plate 35, so that the shaft fork can be accurately docked with the transmission shaft above it.

[0045] Reference Figure 5As shown, during the welding process, since the shaft fork is located at the bottom of the transmission shaft, the shaft fork needs to bear the gravity of the transmission shaft, which can easily lead to the shaft fork lacking support and becoming skewed. Based on this, in order to further ensure the stability of the shaft fork during the welding process, in this embodiment, installation grooves are opened on both side walls in the width direction of the support block 34, and an extension spring rod 341 is arranged inside the installation groove. A resistance block 342 is arranged at one end of the extension spring rod 341 close to the outside of the support block 34, and the extension spring rod 341 always applies an ejection force to the resistance block 342 pointing to the side away from the installation groove, so that the resistance block 342 extends out of the installation groove in the initial state.

[0046] Furthermore, in this embodiment, a connecting plate 343 located in the mounting groove is installed on the outer wall of the resistance block 342, and a supporting plate 345 is provided on the side of the connecting plate 343 away from the mounting groove through a plurality of elastic members 344, and the elastic members 344 are used to apply an elastic force to the supporting plate 345 with a tendency to move away from the connecting plate 343, and a plurality of anti-slip strips 346 are provided on the side of the supporting plate 345 away from the connecting plate 343 at equal intervals from top to bottom, and a through hole is provided on the supporting plate 345 for passing the resistance block 342.

[0047] During the specific implementation process, after the axle fork is inserted into the storage groove 33, the two mounting holes on the axle fork for installing the cross shaft are located at the contact block 342, so that the contact block 342 is pressed against the mounting hole under the action of the extension spring rod 341, so as to further limit the axle fork and prevent the axle fork from loosening; at the same time, the supporting plates 345 in the mounting grooves on both sides of the supporting block 34 are pressed against the two inner walls of the axle fork opening under the action of the elastic member 344, and the friction between the axle fork and the anti-slip strip 346 can be increased, thereby increasing the further supporting and limiting of the axle fork to prevent the axle fork from being easily skewed due to external forces and affecting the welding effect; in this way, the axle fork can be adaptively limited through the mutual cooperation between the execution plate 35, the contact block 342 and the supporting plate 345 without the need for adjustment, thereby improving the limiting efficiency of the axle fork.

[0048] In addition, by providing the resistance block 342 and the supporting plate 345, adaptive adjustment can be performed according to whether a mounting hole is provided on the shaft fork, as follows: when a mounting hole is provided on the shaft fork, the resistance block 342 abuts against the mounting hole, and the supporting plate 345 abuts against the inner wall of the shaft fork opening, so as to limit and fix the shaft fork; if a mounting hole is not provided on the shaft fork, the resistance block 342 and the supporting plate 345 both abut against the inner wall of the shaft fork opening, that is, the shaft fork is further limited by the resistance force between the supporting plate 345 and the shaft fork, so that it can adapt to different models of shaft forks, thereby improving the adaptability of the present invention.

[0049] After welding is completed, the transmission shaft and the shaft fork can be pulled upward, so that the shaft fork overcomes the limiting effects of the execution plate 35, the resistance block 342 and the supporting plate 345 and is pulled out from the receiving groove 33, thereby facilitating quick removal.

[0050] Reference Figure 2 and Figure 3 As shown, in order to facilitate welding of the gap between the transmission shaft and the shaft fork, a corresponding welding assembly 32 is also provided in this embodiment. Specifically, the welding assembly 32 includes an annular support frame 321 sleeved on the outer wall of the linkage block 31, and a bracket 322 is installed on either side of the upper end of the annular support frame 321. A welding gun 323 is arranged on the top of the bracket 322, and the welding end of the welding gun 323 points to the gap between the transmission shaft and the shaft fork.

[0051] In a specific implementation process, after the transmission shaft and the shaft fork are connected, the welding gun 323 is started, and the gap between the transmission shaft and the shaft fork can be welded by the welding gun 323.

[0052] Continue to refer to Figure 2 As shown, since there is an annular gap between the drive shaft and the shaft fork after docking, in order to ensure the welding strength between the drive shaft and the shaft fork, the annular gap needs to be completely welded. Based on this, in this embodiment, the welding machine can be controlled to rotate along the annular gap, so as to realize rotary welding. Specifically, the outer wall of the support column 2 is provided with two control rings 21 which are respectively flush with the height of the clamping plate 41 and the linkage block 31, and a driving arm 22 is respectively arranged between the upper and lower control rings 21 and the clamping plate 41 and the linkage block 31.

[0053] Furthermore, in this embodiment, the support column 2 is rotatably installed on the upper end of the processing platform 1, and the welding assembly 32 also includes a driving motor 324 arranged at the bottom of the processing platform 1 through a motor seat. The output shaft at the top of the driving motor 324 passes through the processing platform 1 and is connected to the bottom of the support column 2. An outer gear ring 325 is provided at the lower end of the annular support frame 321, and an arc-shaped rack plate 326 meshing with the outer gear ring 325 is provided at the upper end of the processing platform 1.

[0054] During the specific implementation process, after the transmission shaft and the shaft fork are respectively installed on the supporting unit 3 and the straightening unit 4, the driving motor 324 is started, and the driving motor 324 drives the support column 2 to rotate. The support column 2 drives the linkage block 31 and the clamping plate 41 to rotate as a whole along the annular slide groove 11 through the control ring 21 and the driving arm 22; during this period, the annular support frame 321 can drive the bracket 322 and the welding gun 323 to rotate through the mutual cooperation between the outer gear ring 325 and the arc-shaped rack plate 326, so that the welding gun 323 rotates along the annular gap between the transmission shaft and the shaft fork. At this time, starting the welding gun 323 can rotationally weld the gap between the transmission shaft and the shaft fork, and then the annular gap can be fully welded to prevent omissions and affect the welding strength.

[0055] It should be noted that the number of linkage blocks 31 and clamping plates 41 are both multiple and evenly distributed in a ring shape along the support column 2. The multiple linkage blocks 31 and clamping plates 41 are respectively connected to the driving arm 22 between the control ring 21. An annular slide groove 11 is provided at the upper end of the processing platform 1, and the lower ends of the multiple linkage blocks 31 are each installed with a lifting column 311 that is slidably docked in the annular slide groove 11; a limit group for limiting and fixing the transmission shaft and the shaft fork is formed between each linkage block 31 and the clamping plate 41 corresponding to the upper and lower positions, and the multiple limit groups can clamp the transmission shaft and the shaft fork respectively, so that multiple groups of transmission shafts and shaft forks can be welded at the same time, and either side of the processing platform 1 is a loading and unloading station for removing the welded transmission shaft and shaft fork and installing the transmission shaft and shaft fork to be welded, and the other parts on the processing platform 1 are welding stations for the clamping plate 41 and the linkage block 31 to rotate and cooperate with the welding gun 323 to perform rotational welding on the transmission shaft and shaft fork, so as to perform rotational welding on the transmission shaft and shaft fork with the limit completed.

[0056] Reference Figure 6 As shown, in order to facilitate the rapid installation of the drive shaft between the two clamping plates 41 and the rapid removal of the welded drive shaft together with the shaft fork, in the present embodiment, the clamping plate 41 is an arc-shaped structure, and the opposite sides of the two relatively arranged clamping plates 41 are both arc-shaped concave surfaces, and the straightening unit 4 also includes a guide plate 42 which is rotatably installed on the side of the clamping plate 41 away from the driving arm 22 through a torsion spring, and the side of the guide plate 42 away from the clamping plate 41 has an inclined edge extending outward; the torsion spring always applies a driving force to the guide plate 42 pointing to the side close to the axis of the clamping plate 41, so that the guide plate 42 forms a complete arc-shaped structural plate with the clamping plate 41 in the initial state.

[0057] Furthermore, in this embodiment, elastic pads 43 are installed on opposite sides of the two relatively arranged clamping plates 41, and a plurality of vertical columns 44 are rotatably arranged on one side of the elastic pads 43 close to the axis of the clamping plate 41. The vertical columns 44 facilitate pulling the welded transmission shaft together with the shaft fork out of the clamping plate 41.

[0058] In the specific implementation process, the distance between the two guide plates 42 can be increased by the inclined edge, so that it is convenient to squeeze the transmission shaft to be welded into the clamping plate 41 after passing through the two inclined edges. At this time, the inclined edge and the guide plate 42 are adaptively opened outward as a whole. After the transmission shaft is installed, the guide plate 42 is reset under the action of the torsion spring and cooperates with the clamping plate 41 to abut against the outer wall of the transmission shaft, so as to facilitate the rapid installation of the transmission shaft, and the transmission shaft can be adaptively clamped and limited, so that the installation is convenient; during this period, the elastic pad 43 can be pressed against the outer wall of the transmission shaft to achieve a clamping effect, and the vertical column 44 can limit the vertical direction of the transmission shaft, so that the transmission shaft is clamped in multiple directions by multiple vertical columns 44 on the basis of being clamped and limited by the elastic pad 43, so as to ensure that the transmission shaft always remains in a vertical state, and further ensure the docking accuracy between the transmission shaft and the shaft fork. Example

[0059] Reference Figure 7 , Figure 8 and Fig. 9 As shown, on the basis of Example 1, in order to prevent the transmission shaft from shaking and affecting the welding effect during the circumferential movement of the transmission shaft driven by the clamping plate 41 along the support column 2, a locking unit 5 for fixing the transmission shaft is also provided in this embodiment. Specifically, the locking unit 5 includes a push rod 51 slidably penetrated on the clamping plate 41, and a fastening plate 52 is installed on the side of the push rod 51 close to the elastic pad 43, and a cavity for accommodating the fastening plate 52 is opened inside the elastic pad 43.

[0060] Furthermore, in this embodiment, a contraction spring 53 is provided between the fastening plate 52 and the clamping plate 41 and is sleeved on the outside of the push rod 51. The contraction spring 53 always applies a contraction force to the fastening plate 52 to move it toward the side of the clamping plate 41. A limiting groove is provided at the bottom of the clamping plate 41 away from the elastic pad 43, and an auxiliary plate 54 is slidably connected inside the limiting groove. A pushing spring rod 55 is installed between the auxiliary plate 54 and the top wall of the limiting groove. A connecting frame 56 is commonly provided on the outer walls of the auxiliary plates 54 on the two clamping plates 41. A positioning block 57 that slidably cooperates with the connecting frame 56 is provided on the outer wall of the clamping plate 41. An inclined pressure plate 58 is provided on the top of the connecting frame 56. The upper end of the inclined pressure plate 58 is inclined toward the side away from the clamping plate 41, and the end of the push rod 51 away from the fastening plate 52 slides in conflict with the inclined pressure plate 58.

[0061] It should be noted that the pushing spring rod 55 always applies a downward pushing force to the auxiliary plate 54, so that the auxiliary plate 54 drives the connecting frame 56 to be in the lowest position in the initial state. At this time, the fastening plate 52 drives the push rod 51 to extend to the side away from the elastic pad 43 under the action of the contraction spring 53; in addition, the connecting frame 56 can be limited by the cooperation between the limiting slide groove and the auxiliary plate 54 and the sliding cooperation between the positioning block 57 and the clamping plate 41, so that it can only move up and down reciprocatingly under the action of external force, thereby ensuring that the connecting frame 56 drives the inclined pressure plate 58 to move up and down reciprocatingly.

[0062] Furthermore, in this embodiment, an arc-shaped bracket 59 is installed on the upper end of the processing platform 1, both ends of the arc-shaped bracket 59 are located on both sides of the loading and unloading station and are provided with downwardly inclined chamfers, and a supporting rib 50 is installed at the bottom of the connecting frame 56 and is slidably docked to the upper end of the arc-shaped bracket 59.

[0063] During the specific implementation process, when the connecting frame 56 moves to the loading and unloading station with the linkage block 31 and the clamping plate 41, the supporting rib 50 conflicts with the upper end of the processing platform 1. At this time, the connecting frame 56 is in the lowest position, so that the inclined pressure plate 58 on the top of the connecting frame 56 cannot apply a pushing force to the push rod 51, and then the push rod 51 drives the fastening plate 52 to return to its initial state and does not apply a clamping force to the drive shaft. At this time, it is convenient to install and disassemble the drive shaft.

[0064] Subsequently, the support column 2 drives the linkage block 31, the clamping plate 41, the transmission shaft, the shaft fork and the connecting frame 56 to move circumferentially as a whole through the driving arm 22. When the connecting frame 56 drives the supporting rib 50 to move to the upper end of the arc-shaped bracket 59, the connecting frame 56 drives the inclined pressure plate 58 to move upward as a whole, so that the inclined pressure plate 58 applies a pushing force to the push rod 51, and the push rod 51 drives the fastening plate 52 to move closer to one side of the transmission shaft, so that the fastening plate 52 further clamps and fixes the transmission shaft through the elastic pad 43 to ensure the stability of the transmission shaft during welding and prevent the transmission shaft from tilting and shaking, which affects the welding accuracy and welding effect.

[0065] After welding is completed, the linkage block 31, the clamping plate 41 and the connecting frame 56 are moved to the loading and unloading station as a whole. At this time, the connecting frame 56 drives the inclined pressure plate 58 to reset, so that the welded transmission shaft together with the shaft fork can be quickly removed and the transmission shaft to be welded can be quickly installed.

[0066] During operation: Step 1: First, insert the shaft fork into the receiving groove 33 with the opening facing downward, and the opening of the shaft fork is covered on the outside of the top support block 34. During this period, the actuator plate 35 applies a pushing force to the shaft fork under the action of the supporting spring rod 36, so that both sides of the shaft fork are subjected to equal squeezing forces, so that the shaft fork can be supported and limited, avoiding the lack of stability during welding and affecting the welding effect, and the shaft fork is located in the middle of the receiving groove 33 under the squeezing force of the actuator plate 35, so that the shaft fork can be accurately docked with the transmission shaft above it.

[0067] Step 2: After the axle fork is inserted into the receiving groove 33, the two mounting holes on the axle fork for installing the cross shaft are located at the abutment block 342, so that the abutment block 342 is pressed against the mounting hole under the action of the extension spring rod 341, so as to further limit the axle fork and prevent the axle fork from loosening; at the same time, the supporting plates 345 in the mounting grooves on both sides of the supporting block 34 are pressed against the two inner side walls of the axle fork opening under the action of the elastic member 344, and the friction between the axle fork and the anti-slip strip 346 can be used to increase the friction between the axle fork, thereby increasing the further support and limiting of the axle fork, and preventing the axle fork from being easily skewed due to external forces and affecting the welding effect.

[0068] Step 3: The transmission shaft to be welded is squeezed into the clamping plate 41 after passing through the two inclined edges. At this time, the inclined edges and the guide plate 42 are adaptively opened outward as a whole. After the transmission shaft is installed, the guide plate 42 is reset under the action of the torsion spring and cooperates with the clamping plate 41 to rest against the outer wall of the transmission shaft, thereby facilitating the rapid installation of the transmission shaft.

[0069] During this period, the elastic pad 43 can be pressed against the outer wall of the transmission shaft to exert a clamping effect on it, and the vertical column 44 can limit the vertical direction of the transmission shaft, so that the transmission shaft is clamped in multiple directions by multiple vertical columns 44 on the basis of being clamped and limited by the elastic pad 43, thereby ensuring that the transmission shaft always remains in a vertical state and further ensuring the docking accuracy between the transmission shaft and the shaft fork.

[0070] Step 4: Start the drive motor 324, the drive motor 324 drives the support column 2 to rotate, and the support column 2 drives the linkage block 31 and the clamping plate 41 to rotate along the annular groove 11 as a whole through the control ring 21 and the drive arm 22, so that the linkage block 31 and the clamping plate 41 drive the shaft fork and the transmission shaft to move circumferentially along the support column 2.

[0071] During this period, the cooperation between the outer gear ring 325 and the arc-shaped rack plate 326 can enable the annular support frame 321 to drive the bracket 322 and the welding gun 323 to rotate, so that the welding gun 323 rotates along the annular gap between the transmission shaft and the shaft fork. At this time, the welding gun 323 is started, and the welding gun 323 rotationally welds the gap between the transmission shaft and the shaft fork, thereby fully welding the annular gap to prevent omissions and affect the welding strength.

[0072] Step 5: The support column 2 drives the linkage block 31, the clamping plate 41, the transmission shaft, the shaft fork and the connecting frame 56 to move circumferentially as a whole through the driving arm 22. When the connecting frame 56 drives the supporting rib 50 to move to the upper end of the arc-shaped bracket 59, the connecting frame 56 drives the inclined pressure plate 58 to move upward as a whole, so that the inclined pressure plate 58 applies a pushing force to the push rod 51, and the push rod 51 drives the fastening plate 52 to move closer to one side of the transmission shaft, so that the fastening plate 52 further clamps and fixes the transmission shaft through the elastic pad 43 to ensure the stability of the transmission shaft during welding and prevent the transmission shaft from tilting and shaking to affect the welding accuracy and welding effect.

[0073] Step 6: After welding is completed, the linkage block 31, the clamping plate 41 and the connecting frame 56 are moved as a whole to the loading and unloading station. At this time, the connecting frame 56 drives the inclined pressure plate 58 to reset, so that the welded transmission shaft together with the shaft fork can be quickly removed and the transmission shaft to be welded can be quickly installed; at the same time, the shaft fork can overcome the limiting effect of the execution plate 35, the resistance block 342 and the supporting plate 345 and then be pulled out from the receiving groove 33, so as to facilitate the quick removal of the shaft fork and the quick installation of the shaft fork to be welded in the receiving groove 33.

[0074] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0075] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A rotatable laser welding device for processing automobile safety parts, comprising a processing platform (1), wherein a support column (2) is arranged at the middle of the upper end of the processing platform (1), and characterized in that: A supporting unit (3) for fixing the shaft fork and a straightening unit (4) for clamping the transmission shaft are mounted on the support column (2); the straightening unit (4) is located above the supporting unit (3), wherein: The supporting unit (3) comprises a linkage block (31) on which the shaft fork is placed, a welding assembly (32) for welding the transmission shaft and the shaft fork being mounted on the linkage block (31), and the straightening unit (4) comprises two clamping plates (41) arranged opposite to each other and used for clamping the transmission shaft; The support unit (3) further comprises a receiving groove (33) provided at the upper end of the linkage block (31); a supporting block (34) for supporting and limiting the shaft fork is installed on the inner bottom wall of the receiving groove (33); two pushing groups are symmetrically arranged on the inner side wall of the receiving groove (33) along the width direction of the supporting block (34); each pushing group comprises two actuating plates (35) symmetrically distributed along the length direction of the supporting block (34); a supporting spring rod (36) is installed between the actuating plate (35) and the inner side wall of the receiving groove (33); Both side walls of the supporting block (34) in the width direction are provided with mounting grooves, a supporting spring rod (341) is arranged inside the mounting groove, and a resisting block (342) is arranged at one end of the supporting spring rod (341) close to the outside of the supporting block (34); The outer wall of the abutment block (342) is provided with a connecting plate (343) located in the installation groove; a supporting plate (345) is provided on a side of the connecting plate (343) away from the installation groove via a plurality of elastic members (344); a plurality of anti-slip strips (346) are provided on a side of the supporting plate (345) away from the connecting plate (343) at equal intervals from top to bottom; and a through hole for passing the abutment block (342) is provided on the supporting plate (345).

2. A rotatable laser welding device for processing automobile safety parts according to claim 1, characterized in that: The welding assembly (32) comprises an annular support frame (321) sleeved on the outer wall of the linkage block (31), a bracket (322) is installed on either side of the upper end of the annular support frame (321), and a welding gun (323) is arranged on the top of the bracket (322).

3. The rotatable laser welding device for automobile safety parts processing according to claim 1 is characterized in that: The outer wall of the support column (2) is sleeved with two control rings (21) which are respectively flush with the clamping plate (41) and the linkage block (31), and a driving arm (22) is respectively provided between the upper and lower control rings (21) and the clamping plate (41) and the linkage block (31).

4. The rotatable laser welding device for processing automobile safety parts according to claim 2, characterized in that: The support column (2) is rotatably mounted on the upper end of the processing platform (1), and the welding assembly (32) further comprises a driving motor (324) arranged at the bottom of the processing platform (1) via a motor seat, the output shaft at the top of the driving motor (324) passes through the processing platform (1) and is connected to the bottom of the support column (2), the lower end of the annular support frame (321) is sleeved with an outer gear ring (325), and the upper end of the processing platform (1) is provided with an arc-shaped rack plate (326) meshing with the outer gear ring (325).

5. The rotatable laser welding device for automobile safety parts processing according to claim 3 is characterized in that: The linkage blocks (31) and the clamping plates (41) are both multiple in number and are evenly distributed in an annular manner along the support column (2); the multiple linkage blocks (31) and the clamping plates (41) are respectively connected to the driving arm (22) between the control ring (21); an annular slide groove (11) is provided at the upper end of the processing platform (1); and the lower ends of the multiple linkage blocks (31) are each provided with a lifting column (311) that is slidably docked in the annular slide groove (11).

6. The rotatable laser welding device for automobile safety parts processing according to claim 1 is characterized in that: The clamping plate (41) is an arc-shaped structure, and the opposite sides of the two clamping plates (41) arranged opposite to each other are both arc-shaped concave surfaces. The straightening unit (4) further comprises a guide plate (42) which is rotatably mounted on a side of the clamping plate (41) away from the driving arm (22) via a torsion spring, and the side of the guide plate (42) away from the clamping plate (41) has an inclined edge extending outward.

7. The rotatable laser welding device for automobile safety parts processing according to claim 1 is characterized in that: Elastic pads (43) are installed on opposite sides of the two clamping plates (41) arranged opposite to each other, and a plurality of vertical columns (44) are rotatably arranged on one side of the elastic pad (43) close to the axis of the clamping plate (41).

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