Automatic positioning equipment for laser welding of mechanical parts

Abstract

The invention relates to automatic positioning equipment for laser welding of mechanical parts, which belongs to the technical field of laser welding and is provided with a stop assembly, and after a positioning slide block finishes feeding and moves into a protective cover along a moving track until the positioning slide block is abutted against and matched with the stop assembly, the stop assembly is stopped; at the moment, the position of the positioning sliding block is consistent with the preset position where the positioning sliding block moves to the welding assembly, the welding accuracy of the welding assembly on the part on the positioning sliding block in the follow-up process is guaranteed, and then the laser welding effect is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of laser welding, and in particular relates to automatic positioning equipment for laser welding of mechanical parts. Background Art

[0002] When using a traditional manual laser welding machine, personnel are required to perform welding work by holding the welding machine. During the welding process, the welding machine is moved by hand, which will cause inaccurate positioning of the welding machine, thereby reducing the accuracy of the welding machine. In order to solve this problem, current laser welding equipment will be equipped with corresponding positioning equipment to improve the welding accuracy.

[0003] For example, the utility model patent with patent authorization announcement number: CN220196650U discloses a laser welding machine positioning structure, including a workbench, and also including: a support rod, which is vertically arranged on the workbench and movably connected to the workbench; a first positioning component, which is arranged at the workbench corresponding to the support rod, and the support rod is movably connected to the workbench through the first positioning component; a second positioning component, which is fixed on the support rod; a laser welding machine, which is movably arranged on the second positioning component; a rotating component, which is arranged on the workbench and corresponds to the laser welding head; the support rod is driven by the first positioning component to move horizontally in the movable groove, driving the laser welding machine on the support rod to move horizontally for horizontal positioning, and the laser welding machine is driven by the second positioning component to move longitudinally in the movable square hole of the support plate for longitudinal positioning, and the rotating component is used for angular positioning. While ensuring the accuracy of positioning, multi-directional angle adjustment can be performed.

[0004] Based on the search of the above patent authorization announcement number and the shortcomings found therein:

[0005] In large-scale laser welding equipment, a protective cover is usually provided, and the positioning device is arranged inside the protective cover to ensure safety during laser welding; at the same time, due to the obstruction of the protective cover, the parts cannot be placed directly on the positioning device. In order to solve the problem of loading the positioning device, the positioning device is usually arranged as a movable structure. The positioning device needs to be moved to the loading place first to realize the loading of the parts, and then moved to the welding equipment to realize the welding process of the parts; with such a setting, there is a situation where the position where the positioning device moves to the welding equipment deviates from the pre-set position where it moves to the welding equipment, which causes the welding position of the parts to deviate from the welding equipment, affecting the welding effect of the parts. Summary of the invention

[0006] In order to solve the problem that a protective cover is usually provided in large-scale laser welding equipment, a positioning device is arranged inside the protective cover to ensure safety during laser welding; at the same time, due to the obstruction of the protective cover, the parts cannot be placed directly on the positioning device. In order to solve the problem of loading the positioning device, the positioning device is usually arranged as a movable structure. The positioning device needs to be moved to the loading place first to realize the loading of the parts, and then moved to the welding equipment to realize the welding process of the parts; such a setting may cause a deviation between the position where the positioning device moves to the welding equipment and the pre-set position where the positioning device moves to the welding equipment, thereby causing a deviation in the welding position of the parts by the welding equipment, affecting the welding effect of the parts. The present invention provides an automatic positioning device for laser welding of mechanical parts.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] The automatic positioning equipment for laser welding of mechanical parts comprises a moving track, a positioning assembly, a welding assembly and a protective cover, wherein the moving track is arranged on a workbench, one end of the moving track is a feeding end, the positioning assembly comprises a positioning plate and a positioning slider, the positioning slider is slidably arranged on the moving track, the positioning plate is mounted on the positioning slider, the protective cover is mounted on the workbench, and the welding assembly is arranged in the protective cover; the protective cover is located on the middle end of the moving track;

[0009] It also includes a stop component, which is arranged on a workbench and located in the protective cover. The stop component can lock or release its fitting relationship with the positioning slider. When the stop component and the positioning slider are fitted with each other, the position of the positioning slider is consistent with the pre-set position of the welding component.

[0010] As a preferred technical solution of the present invention, the protective cover includes a protective shell with a hollow interior, a first slider and a loading cylinder. The protective shell is mounted on a workbench. The protective shell is provided with a loading port, which is opposite to the loading end of the movable track. The first slider is slidably disposed on the inner side wall of the protective shell. The loading cylinder is disposed on the inner side wall of the protective shell. The output end of the loading cylinder is connected to the first slider, and the first slider can lock or release its sealing cooperation relationship with the loading port.

[0011] As a preferred technical solution of the present invention, the positioning assembly also includes a positioning block, and the stop assembly includes a first stop block and a second stop block vertically arranged on the workbench, the positioning block is connected to the positioning slider, and the first stop block and the second stop block are sequentially arranged along the direction from the loading end of the moving track to the protective cover, the first stop block can be raised and lowered on the workbench, the top of the first stop block is inclined, and the vertical height of the first stop block gradually increases along the direction from the loading end of the moving track to the protective cover; the spacing between the first stop block and the second stop block is equal to the thickness of the positioning block.

[0012] As a preferred technical solution of the present invention, the stop assembly also includes a stop spring, the workbench is provided with a lifting slot hole, the first stop block can be slidably arranged in the lifting slot hole, the stop spring is arranged in the lifting slot hole, and the two ends of the stop spring are respectively connected to the first stop block and the workbench.

[0013] As a preferred technical solution of the present invention, the other end of the movable track is the unloading end, the protective cover also includes a second slider and a unloading cylinder, the protective shell is also provided with a unloading port, the unloading port is opposite to the unloading end of the movable track, the second slider is slidably arranged on the inner side wall of the protective shell, the unloading cylinder is arranged on the inner side wall of the protective shell, the output end of the unloading cylinder is connected to the second slider, and the second slider can lock or release its sealing cooperation relationship with the unloading port.

[0014] As a preferred technical solution of the present invention, the second stop block includes a fixed block, a hinge block and a hinge spring. The fixed block is arranged on a workbench, and one end of the hinge block away from the first stop block is hinged to the top of the fixed block. The two ends of the hinge spring are respectively connected to the fixed block and the hinge block.

[0015] As a preferred technical solution of the present invention, the stop assembly also includes an infrared transmitter and an infrared receiver, the infrared transmitter is vertically arranged on the side wall of the hinge block, the infrared receiver is vertically arranged on the side wall of the fixed block, the infrared receiver is used to receive the transmission signal of the infrared transmitter, and the infrared receiver is communicatively connected with the positioning slider.

[0016] As a preferred technical solution of the present invention, the stop assembly also includes a sliding spring, the top of the hinge block is arranged at an angle, and the vertical height of the hinge block gradually increases along the direction from the unloading end of the movable track to the protective cover. The workbench is provided with a fixed slot hole, and the fixed block can be slidably set in the fixed slot hole, and the sliding spring is set in the fixed slot hole, and the two ends of the sliding spring are respectively connected to the fixed block and the workbench.

[0017] As a preferred technical solution of the present invention, the stop assembly also includes a connecting rod, and a movable groove is opened on the end face of the first stop block close to the second stop block. One end of the connecting rod is connected to the end face of the fixed block, and the other end thereof is slidably disposed in the movable groove. The other end of the connecting rod can lock or release its fitting relationship with the bottom surface of the movable groove.

[0018] As a preferred technical solution of the present invention, the top height of the first stop block is lower than the top height of the second stop block.

[0019] The beneficial effects of the present invention are:

[0020] This solution is provided with a stop assembly. After the positioning slider completes loading, it moves along the movable track into the protective cover until the positioning slider achieves its abutment with the stop assembly. At this time, the position of the positioning slider is consistent with the pre-set position of the moving to the welding assembly, ensuring the accuracy of subsequent welding of the parts on the positioning slider by the welding assembly, thereby ensuring the effect of laser welding, and solving the problem that in large-scale laser welding equipment, a protective cover is usually provided, and the positioning device is arranged in the protective cover to ensure safety during laser welding; at the same time, due to the obstruction of the protective cover, the parts cannot be placed directly on the positioning device. In order to solve the problem of positioning device loading, the positioning device is usually arranged as a movable structure. The positioning device needs to be moved to the loading place first to load the parts, and then moved to the welding equipment to realize the welding process of the parts; such a setting has the situation that there is a deviation between the position of the positioning device moved to the welding equipment and the pre-set position of the moving to the welding equipment, thereby causing the welding position of the welding equipment to deviate, affecting the welding effect of the parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0022] Figure 1 This is an overall diagram of the automatic positioning device for laser welding of mechanical parts of the present invention;

[0023] Figure 2 It is a left sectional view of the protective cover of the automatic positioning device for laser welding of mechanical parts of the present invention;

[0024] Figure 3 It is a right sectional view of the protective cover of the automatic positioning device for laser welding of mechanical parts of the present invention;

[0025] Figure 4 This is a schematic structural diagram of the first stop block and the second stop block of the automatic positioning device for laser welding of mechanical parts of the present invention.

[0026] Description of main symbols

[0027] In the figure: 1. Moving track; 2. Protective cover; 201. Protective shell; 202. First slider; 203. Loading cylinder; 204. Second slider; 205. Unloading cylinder; 3. Positioning plate; 4. Positioning slider; 5. Positioning block; 6. First stop block; 7. Second stop block; 701. Fixed block; 702. Articulated block; 703. Articulated spring; 8. Stop spring; 9. Infrared transmitter; 10. Infrared receiver; 11. Sliding spring; 12. Connecting rod. DETAILED DESCRIPTION

[0028] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0029] See also Figure 1-Figure 4The present embodiment provides an automatic positioning device for laser welding of mechanical parts, including a moving track 1, a positioning component, a welding component and a protective cover 2. The moving track 1 is arranged on a workbench, and one end of the moving track 1 is a feeding end. The positioning component includes a positioning plate 3 and a positioning slider 4. The positioning slider 4 is slidably arranged on the moving track 1, and the positioning plate 3 is mounted on the positioning slider 4. The protective cover 2 is mounted on the workbench, and the welding component is arranged in the protective cover 2; the protective cover 2 is located on the middle end of the moving track 1; and it also includes a stop component, which is arranged on the workbench and located in the protective cover 2. The stop component can lock or release its fitting relationship with the positioning slider 4. When the stop component and the positioning slider 4 are fitted with each other, the position of the positioning slider 4 is consistent with the pre-set position of the moving to the welding component. This solution is provided with a stop assembly. After the positioning slider 4 completes loading, it moves along the movable track 1 into the protective cover 2 until the positioning slider 4 achieves its abutment with the stop assembly. At this time, the position of the positioning slider 4 is consistent with the pre-set position of the moving to the welding assembly, ensuring the accuracy of subsequent welding assemblies welding the parts on the positioning slider 4, thereby ensuring the effect of laser welding, and solving the problem that in large-scale laser welding equipment, a protective cover 2 is usually provided, and the positioning device is arranged in the protective cover 2 to ensure safety during laser welding; at the same time, due to the obstruction of the protective cover 2, the parts cannot be placed directly on the positioning device. In order to solve the problem of positioning device loading, the positioning device is usually arranged as a movable structure. The positioning device needs to be moved to the loading place first to load the parts, and then moved to the welding equipment to realize the welding process of the parts; such a setting has the situation that there is a deviation between the position of the positioning device moved to the welding equipment and the pre-set position of the moving to the welding equipment, thereby causing the welding position of the welding equipment to deviate, affecting the welding effect of the parts.

[0030] Specifically, the protective cover 2 of the present scheme includes a protective shell 201 with a hollow interior, a first slider 202 and a loading cylinder 203. The protective shell 201 is mounted on a workbench. The protective shell 201 is provided with a loading port, which is opposite to the loading end of the movable track 1. The first slider 202 is slidably arranged on the inner wall of the protective shell 201. The loading cylinder 203 is arranged on the inner wall of the protective shell 201. The output end of the loading cylinder 203 is connected to the first slider 202. By providing the loading cylinder 203, the output end of the loading cylinder 203 can control the movement of the first slider 202, so that the first slider 202 can lock or release its sealing cooperation relationship with the loading port. It is worth noting that when the first slider 202 releases its sealing cooperation relationship with the loading port, the positioning slider 4 can enter the protective shell 201 through the loading port, or move to the outside of the protective shell 201 through the loading port.

[0031] Furthermore, the positioning assembly of the present scheme also includes a positioning block 5, and the stop assembly includes a first stop block 6 and a second stop block 7 vertically arranged on the workbench. The positioning block 5 is connected to the positioning slide block 4, and the first stop block 6 and the second stop block 7 are sequentially arranged along the direction from the feeding end of the moving track 1 to the protective cover 2. The first stop block 6 can be raised and lowered on the workbench, and the top of the first stop block 6 is tilted. Along the direction from the feeding end of the moving track 1 to the protective cover 2, the vertical height of the first stop block 6 increases gradually; the spacing between the first stop block 6 and the second stop block 7 is equal to the thickness of the positioning block 5; by providing the first stop block 6 and the second stop block 7, since the positioning block 5 and the positioning slide block 4 are connected to each other, when the positioning slide block 4 starts to move, it will drive the positioning block 5 to move together; when the positioning slide block 4 moves out of the protective shell 201 During the movement into the protective shell 201, since the top height of the first stop block 6 gradually increases, and the first stop block 6 can be raised and lowered on the workbench, the positioning block 5 will continuously press the first stop block 6 during the movement of the positioning slider 4, so that the height of the first stop block 6 continues to decrease until the positioning block 5 releases its pressing and fitting relationship with the first stop block 6, and the first stop block 6 will restore its original height. Since the spacing between the first stop block 6 and the second stop block 7 is equal to the thickness of the positioning block 5; therefore, when the first stop block 6 restores its original height, due to the restrictions of the first stop block 6 and the second stop block 7, the positioning block 5 will be restricted from moving, thereby achieving the effect of restricting the positioning slider 4 from moving. It is worth noting that the position of the positioning slider 4 at this time is consistent with the pre-set position to move to the welding assembly.

[0032] Specifically, in order to realize the lifting and lowering of the first stop block 6 on the workbench, the stop assembly of this scheme also includes a stop spring 8. The workbench is provided with a lifting slot hole. The first stop block 6 can be slidably set in the lifting slot hole. The stop spring 8 is set in the lifting slot hole. The two ends of the stop spring 8 are respectively connected to the first stop block 6 and the workbench.

[0033] After the mechanical parts arranged on the positioning plate 3 of the present invention have completed the laser welding process, the mechanical parts arranged on the positioning plate 3 need to be taken out before placing new mechanical parts on the positioning plate 3. Based on this, the other end of the movable track 1 of the present invention is the unloading end, the protective cover 2 also includes a second slider 204 and a unloading cylinder 205, and the protective shell 201 is also provided with a unloading port, which is directly opposite to the unloading end of the movable track 1. The second slider 204 is slidably arranged on the inner side wall of the protective shell 201, and the unloading cylinder 205 is arranged on the inner side wall of the protective shell 201. The output end of the cylinder 205 is connected to the second slider 204, and the second slider 204 can lock or release its sealing cooperation relationship with the discharge port. By providing the discharge cylinder 205, the output end of the discharge cylinder 205 can control the movement of the second slider 204, so that the second slider 204 can lock or release its sealing cooperation relationship with the discharge port. It is worth noting that when the second slider 204 releases its sealing cooperation relationship with the discharge port, the positioning slider 4 can enter the protective shell 201 through the discharge port, or move to the outside of the protective shell 201 through the discharge port.

[0034] According to the above embodiment, the first stop block 6 and the second stop block 7 of the present scheme can jointly limit the movement of the positioning block 5. Since the unloading end of the present scheme is arranged behind the second stop block 7, if it is necessary to move the positioning slider 4 toward the unloading end of the movable track 1, it is necessary to release the restrictions of the positioning block 5 and the second stop block 7. Based on this, the second stop block 7 of the present scheme includes a fixed block 701, a hinge block 702 and a hinge spring 703. The fixed block 701 is arranged on the workbench, and the end of the hinge block 702 away from the first stop block 6 is hinged to the top of the fixed block 701. The hinge spring 703 The two ends are respectively connected to the fixed block 701 and the hinge block 702. When the positioning slider 4 moves toward the unloading end of the movable track 1, the positioning block 5 will drive the hinge block 702 to rotate along the hinge end between the hinge block 702 and the fixed block 701. Finally, the positioning block 5 will release its abutting and fitting relationship with the hinge block 702, so that the positioning block 5 can move smoothly toward the unloading end of the movable track 1. It is worth mentioning that due to the hinge spring 703, when the positioning block 5 releases its abutting and fitting relationship with the hinge block 702, the hinge block 702 will return to its original position.

[0035] According to the above embodiment, since the positioning slider 4 can release the matching relationship between the positioning block 5 and the second stop block 7 by moving, in order to ensure that the position of the positioning slider 4 reaching the welding assembly is consistent with the pre-set position of the welding assembly, the stop assembly of this scheme also includes an infrared transmitter 9 and an infrared receiver 10, the infrared transmitter 9 is vertically arranged on the side wall of the hinge block 702, and the infrared receiver 10 is vertically arranged on the side wall of the fixed block 701, and the infrared receiver 10 is used to receive the transmission signal of the infrared transmitter 9, and the infrared receiver 10 is communicated with the positioning slider 4; it should be noted that when the first stop block 6 and the second stop block 7 jointly restrict the positioning block 5, the hinge block 702 does not rotate relative to the fixed block 701, that is, at this time, the signal transmitted by the infrared transmitter 9 arranged on the hinge block 702 can be received by the infrared receiver 10 arranged on the fixed block 701. Similarly, when the first stop block 6 and the second stop block 7 cannot jointly limit the positioning block 5, the hinge block 702 will rotate relative to the fixed block 701, that is, at this time, the signal emitted by the infrared transmitter 9 arranged on the hinge block 702 cannot be received by the infrared receiver 10 arranged on the fixed block 701. Through such a setting, it can be determined whether the positioning slider 4 has moved to the preset welding component position.

[0036] In addition, after the positioning slider 4 of the present invention reaches the unloading end of the moving track 1 and completes the unloading of the mechanical parts on the positioning plate 3, it is necessary to move along the moving track 1 to the loading end of the moving track 1 to place the mechanical parts on the positioning plate 3. Such a setting needs to ensure that the positioning block 5 can pass through the second stop block 7; based on this, the stop assembly of the present invention also includes a sliding spring 11, and the top of the hinge block 702 is tilted. Along the direction from the unloading end of the moving track 1 to the protective cover 2, the vertical height of the hinge block 702 gradually increases, and the workbench is provided with a fixed slot, and the fixed block 701 can slide It is arranged in the fixed slot hole, and the sliding spring 11 is arranged in the fixed slot hole, and the two ends of the sliding spring 11 are respectively connected to the fixed block 701 and the workbench; through such an arrangement, when the positioning block 5 moves from the unloading end of the moving track 1 to the loading end of the moving track 1, the positioning block 5 will press the top of the hinge block 702, and since the hinge block 702 and the fixed block 701 are connected to each other, the fixed block 701 moves toward the bottom of the fixed slot hole until the positioning block 5 releases its pressing fit relationship with the hinge block 702, and due to the action of the sliding spring 11, the second stop block 7 returns to its original position.

[0037] In order to ensure that the first stop block 6 and the second stop block 7 can jointly lower their heights during the movement of the positioning block 5 from the unloading end of the moving track 1 to the loading end of the moving track 1, and prevent the first stop block 6 or the second stop block 7 from interfering with the movement of the positioning block 5, the stop assembly of this scheme also includes a connecting rod 12, and a movable groove is provided on the end face of the first stop block 6 close to the second stop block 7. One end of the connecting rod 12 is connected to the end face of the fixed block 701, and the other end thereof can be slidably arranged in the movable groove. The other end of the connecting rod 12 can be locked or released. Its fitting relationship with the bottom surface of the movable groove is such that, through such an arrangement, when the positioning block 5 presses the second stop block 7 to move toward the bottom, due to the action of the connecting rod 12, the first stop block 6 will move toward the bottom following the movement of the second stop block 7; it should be noted that when the positioning block 5 moves from the loading end of the movable track 1 to the protective cover 2, the positioning block 5 will press the first stop block 6. At this time, the bottom surface of the movable groove of the first stop block 6 releases its abutting fitting relationship with the connecting rod 12. Therefore, at this time, only the first stop block 6 moves toward the bottom.

[0038] It should also be noted that in order to ensure that the first stop block 6 can avoid interference with the positioning block 5 during the movement of the positioning block 5 from the unloading end of the moving track 1 to the loading end of the moving track 1, the top height of the first stop block 6 in this scheme is lower than the top height of the second stop block 7. Such a setting can ensure that after the positioning block 5 is released from the press fit with the second stop block 7, even if the first stop block 6 will rise due to the action of the stop spring 8, the positioning block 5 has already moved to the top of the first stop block 6 at this time. Therefore, the first stop block 6 cannot limit the movement of the positioning block 5, so that the positioning block 5 can move smoothly from the unloading end of the moving track 1 to the loading end of the moving track 1.

[0039] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. Automatic positioning equipment for laser welding of mechanical parts, characterized by: It includes a moving track, a positioning assembly, a welding assembly and a protective cover, wherein the moving track is arranged on a workbench, one end of the moving track is a feeding end, the positioning assembly includes a positioning plate and a positioning slider, the positioning slider is slidably arranged on the moving track, the positioning plate is mounted on the positioning slider, the protective cover is mounted on the workbench, and the welding assembly is arranged in the protective cover; the protective cover is located on the middle end of the moving track; It also includes a stop component, which is arranged on a workbench and located in the protective cover. The stop component can lock or release its fitting relationship with the positioning slider. When the stop component and the positioning slider are fitted with each other, the position of the positioning slider is consistent with the pre-set position of the welding component.

2. The automatic positioning equipment for laser welding of mechanical parts according to claim 1 is characterized in that: The protective cover includes a protective shell with a hollow interior, a first slider and a loading cylinder. The protective shell is mounted on a workbench and is provided with a loading port, which is opposite to the loading end of the movable track. The first slider is slidably disposed on the inner side wall of the protective shell. The loading cylinder is disposed on the inner side wall of the protective shell. The output end of the loading cylinder is connected to the first slider, and the first slider can lock or release its sealing cooperation relationship with the loading port.

3. The automatic positioning equipment for laser welding of mechanical parts according to claim 1 is characterized in that: The positioning assembly also includes a positioning block, and the stop assembly includes a first stop block and a second stop block vertically arranged on the workbench, the positioning block is connected to the positioning slider, and the first stop block and the second stop block are sequentially arranged along the direction from the loading end of the moving track to the protective cover, the first stop block can be raised and lowered on the workbench, the top of the first stop block is inclined, and the vertical height of the first stop block gradually increases along the direction from the loading end of the moving track to the protective cover; the spacing between the first stop block and the second stop block is equal to the thickness of the positioning block.

4. The automatic positioning equipment for laser welding of mechanical parts according to claim 3 is characterized in that: The stop assembly also includes a stop spring. The workbench is provided with a lifting slot hole. The first stop block is slidably arranged in the lifting slot hole. The stop spring is arranged in the lifting slot hole. The two ends of the stop spring are respectively connected to the first stop block and the workbench.

5. The automatic positioning equipment for laser welding of mechanical parts according to claim 2 is characterized in that: The other end of the movable track is the unloading end, the protective cover also includes a second slider and a unloading cylinder, the protective shell is also provided with a unloading port, the unloading port is opposite to the unloading end of the movable track, the second slider is slidably arranged on the inner side wall of the protective shell, the unloading cylinder is arranged on the inner side wall of the protective shell, the output end of the unloading cylinder is connected to the second slider, and the second slider can lock or release its sealing cooperation relationship with the unloading port.

6. The automatic positioning equipment for laser welding of mechanical parts according to claim 3 is characterized in that: The second stop block includes a fixed block, a hinge block and a hinge spring. The fixed block is arranged on a workbench. One end of the hinge block away from the first stop block is hinged to the top of the fixed block. The two ends of the hinge spring are respectively connected to the fixed block and the hinge block.

7. The automatic positioning equipment for laser welding of mechanical parts according to claim 6 is characterized in that: The stop assembly also includes an infrared transmitter and an infrared receiver. The infrared transmitter is vertically arranged on the side wall of the hinge block, and the infrared receiver is vertically arranged on the side wall of the fixed block. The infrared receiver is used to receive the transmission signal of the infrared transmitter, and the infrared receiver is communicatively connected with the positioning slider.

8. The automatic positioning equipment for laser welding of mechanical parts according to claim 6 is characterized in that: The stop assembly also includes a sliding spring. The top of the hinge block is tilted. Along the direction from the unloading end of the moving track to the protective cover, the vertical height of the hinge block gradually increases. The workbench is provided with a fixed slot hole. The fixed block can be slidably set in the fixed slot hole. The sliding spring is set in the fixed slot hole. The two ends of the sliding spring are respectively connected to the fixed block and the workbench.

9. The automatic positioning equipment for laser welding of mechanical parts according to claim 6, characterized in that: The stop assembly also includes a connecting rod, and a movable groove is opened on the end face of the first stop block close to the second stop block. One end of the connecting rod is connected to the end face of the fixed block, and the other end thereof is slidably disposed in the movable groove. The other end of the connecting rod can lock or release its fitting relationship with the bottom surface of the movable groove.

10. The automatic positioning equipment for laser welding of mechanical parts according to claim 3 is characterized in that: A top height of the first stopping block is lower than a top height of the second stopping block.

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