Auxiliary device applied to welding machining of mechanical parts

Abstract

The invention discloses an auxiliary device applied to welding machining of mechanical parts, and relates to the technical field of welding auxiliary devices. The auxiliary device is wide in view field and comprehensive in protection and comprises a mounting frame and the like, a welder is used for mounting and fixing the mounting frame, the mounting frame is rotationally connected with paired first rotating rods, the first rotating rods are fixedly connected with protection plates, the mounting frame is rotationally connected with a rotating shaft, and the rotating shaft is fixedly connected with a rotating handle. The installation frame is fixedly connected with a first expansion air block and an air cylinder, a piston rod of the air cylinder is fixedly connected with the rotating shaft, the installation frame is fixedly connected with an air guide pipe, and a limiting assembly is arranged on the installation frame. According to the auxiliary device applied to welding machining of the mechanical parts, through the protection plate, the rotating handle and other components, the face and eyes of a worker can be protected under the condition that the visual field range is not affected, the hands of the worker can be shielded and protected under the condition that operation is not affected, and the protection effect of the auxiliary device applied to welding machining of the mechanical parts and the use experience of a user are improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding auxiliary devices, and in particular to an auxiliary device used in welding processing of mechanical parts. Background Art

[0002] Laser welding is a modern precision material joining technology that uses a high-energy-density laser beam as a heat source to locally heat the material to a molten or near-molten state, and then forms a strong weld by cooling. Compared with traditional welding methods, laser welding has many significant features and advantages, such as high precision and small welds, high speed and high efficiency, low heat input and small deformation, and clean and environmentally friendly.

[0003] When workers use handheld laser welders to weld mechanical parts, strong light and sparks will be emitted from the welding area, so workers usually wear welding protective masks to protect their faces and eyes when welding. However, most of the existing protective masks only have transparent goggles, which will seriously restrict and block the workers' vision, making it difficult for workers to cope with sudden dangers due to their poor perception of the external environment. Moreover, since the protective mask can only protect the face and eyes, workers still need to wear auxiliary protective equipment such as gloves on their hands when welding, which makes the protective effect of the auxiliary protective equipment relatively single.

[0004] Based on the above situation, the present invention proposes an auxiliary device for welding processing of mechanical parts with a wide field of view and comprehensive protection. Summary of the invention

[0005] In order to overcome the disadvantage that only the goggles of existing welding protective masks are made of transparent material, which will seriously limit and block the workers' vision, making it difficult for workers to cope with sudden dangers due to their poor perception of the external environment, and because the protective mask can only protect the face and eyes, the workers still need to wear auxiliary protective equipment such as gloves on their hands during welding, which makes the protective effect of the auxiliary protective equipment relatively single, the present invention provides an auxiliary device for welding processing of mechanical parts with a wide field of view and comprehensive protection.

[0006] An auxiliary device used for welding processing of mechanical parts includes a mounting frame, a protective plate, a rotating handle, a first rotating rod, an air guide pipe, a first expansion gas block, a rotating shaft, an air cylinder and a limit assembly. The welder is used to install and fix the mounting frame. The mounting frame is rotatably connected to a pair of first rotating rods through a damping ring. The first rotating rods are fixedly connected to the protective plate. The mounting frame is rotatably connected to the rotating shaft. The rotating shaft is fixedly connected to the rotating handle. The mounting frame is fixedly connected to the first expansion gas block. The first expansion gas block contacts and cooperates with the welder. The mounting frame is fixedly connected to the air cylinder. The piston rod of the air cylinder is fixedly connected to the rotating shaft. The mounting frame is fixedly connected to the air guide pipe. One end of the air guide pipe is fixedly connected to and communicated with the air cylinder, and the other end of the air guide pipe is fixedly connected to and communicated with the first expansion gas block. A limit assembly is provided on the mounting frame.

[0007] Furthermore, the protective plate is made of coated tempered glass to provide comprehensive protection for workers.

[0008] Furthermore, the turning handle is threadedly connected with a bolt, and the mounting frame is provided with a threaded hole, and the bolt is threadedly connected to the mounting frame.

[0009] Furthermore, the limiting assembly includes a clamping block, a second expansion gas block and a connecting pipe. The paired second expansion gas blocks are fixed to the mounting frame. The second expansion gas block is fixed to and connected to the first expansion gas block by a connecting pipe. The second expansion gas block is fixed to the clamping block, which is slidably connected to the mounting frame, and the clamping block is in contact with the first rotating rod.

[0010] Furthermore, the first rotating rod is provided with a slot corresponding to the locking block.

[0011] Furthermore, it also includes a guiding mechanism, which is arranged on the mounting frame, and the guiding mechanism includes a movable frame, a guide wheel, a rotating frame, a screw and a second rotating rod, the second rotating rod is rotatably connected to the mounting frame through a damping ring, the second rotating rod is fixed to the rotating frame, the rotating frame is slidably connected to the movable frame, the movable frame is rotatably connected to the guide wheel, the movable frame is rotatably connected to the screw, and the screw is threadedly connected to the rotating frame.

[0012] Furthermore, it also includes a locking mechanism, which is arranged on the mounting frame, and the locking mechanism includes a top block, an elastic component, a pull block, a crowbar, a clamping sleeve, a spring piece and a clamping frame. The top block is slidably connected to the mounting frame, and an elastic component is fixedly connected between the top block and the mounting frame. The top block is extrusion-fitted with the turning handle, and a pull block is fixedly connected to the top block. The mounting frame is rotatably connected to the crowbar, and the pull block is extrusion-fitted with the crowbar. The mounting frame is slidably connected to the clamping frame, and a pair of spring pieces are fixedly connected between the clamping frame and the mounting frame. The clamping frame is extrusion-fitted with the crowbar, and a clamping sleeve is fixedly connected to the rotating frame, and the clamping sleeve is in contact with the clamping frame.

[0013] Furthermore, it also includes a protective shell, the mounting frame is fixedly connected with the protective shell, the protective shell is slidably connected to the card frame, and the protective shell is used to protect components such as the pull block, the crowbar and the shrapnel.

[0014] Furthermore, it also includes a fixing mechanism, which is arranged on the mounting frame, and the fixing mechanism includes a connecting plate frame, a rotating block, a bidirectional screw and a clamping block. The connecting plate frame is fixed to the mounting frame, the connecting plate frame is rotatably connected with the bidirectional screw, the bidirectional screw is fixed with a pair of rotating blocks, the connecting plate frame is slidably connected with a pair of clamping blocks, the clamping blocks are threadedly connected to the bidirectional screws, and the clamping blocks are in contact with the welder.

[0015] Furthermore, an auxiliary mechanism is included, which is arranged on the mobile frame. The auxiliary mechanism includes a transparent shell and a laser grounding device. The laser grounding device is fixed to the mobile frame, and the mobile frame is fixed with a pair of transparent shells.

[0016] Beneficial effects: 1. The present invention uses components such as protective plates and handles to not only protect the worker's face and eyes without affecting the field of vision, but also shield and protect the worker's hands without affecting the operation, thereby improving the protective effect of the auxiliary device used in the welding processing of mechanical parts and the user experience.

[0017] 2. The present invention uses components such as a movable frame and a guide wheel, which can not only support the welder during welding, thereby dispersing the force on the welding gun head and increasing the service life of the gun head, but also guide the linear movement welding of the welder, thereby making the movement of the welder more stable, thereby improving the auxiliary welding effect of the auxiliary device used in the welding process of mechanical parts.

[0018] 3. The present invention can limit and fix the rotating frame and other components after rotation through the top block and the clamping frame, so as to prevent the rotating frame and other components from rotating due to force during welding, thereby affecting subsequent use, and improving the stability of the auxiliary device used in the welding process of mechanical parts.

[0019] 4. The present invention can firmly fix the mounting frame and other components on the left side of the welder through components such as bidirectional screws and clamps, thereby preventing the mounting frame and other components from accidentally falling off during welding and affecting the auxiliary and protective effects, thereby improving the stability of the auxiliary device used in the welding process of mechanical parts.

[0020] 5. The present invention uses components such as a transparent shell and a laser grounding device to mark the welding path with the help of laser lines, thereby guiding the linear movement welding of the welder to avoid deviation of the welder during movement, thereby improving the auxiliary welding effect of the auxiliary device used in the welding process of mechanical parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 2 It is a three-dimensional structural schematic diagram of the welding device, mounting frame, protection plate and other components of the present invention.

[0023] Figure 3 It is a three-dimensional structural schematic diagram of the components such as the turning handle, the first turning rod and the air guide tube of the present invention.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the air guide pipe, the first expansion air block, the clamping block and other components of the present invention.

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the components such as the clamping block, the rotating shaft and the second expansion gas block of the present invention.

[0026] Figure 6 It is a three-dimensional structural schematic diagram of the second expansion gas block, the connecting pipe, the gas cylinder and other components of the present invention.

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the components such as the moving frame, guide wheels and rotating frame of the present invention.

[0028] Figure 8 It is a three-dimensional structural schematic diagram of the top block, mounting frame, protective shell and other components of the present invention.

[0029] Fig. 9 It is a three-dimensional structural schematic diagram of the elastic component, protective shell, pull block and other components of the present invention.

[0030] Fig.10 It is a schematic diagram of the three-dimensional structure of the top block, elastic component, crowbar and other components of the present invention.

[0031] Fig.11 It is a three-dimensional structural schematic diagram of the components such as the mounting frame, the connecting plate frame and the rotating block of the present invention.

[0032] Fig.12 It is a three-dimensional structural schematic diagram of the connecting plate frame, rotating block and bidirectional screw and other components of the present invention.

[0033] Fig.13 It is a three-dimensional structural schematic diagram of the connecting plate frame, rotating block, clamping block and other components of the present invention.

[0034] Fig.14 It is a three-dimensional structural schematic diagram of the components such as the movable frame, transparent shell and laser grounding device of the present invention.

[0035] Marked in the figure: 1-welder, 11-mounting frame, 12-protective plate, 13-handle, 14-first rotating rod, 15-air guide tube, 16-first expansion gas block, 17-block, 18-rotating shaft, 19-second expansion gas block, 110-connecting pipe, 111-air cylinder, 2-moving frame, 21-guide wheel, 22-rotating frame, 23-screw, 24-second rotating rod, 3-top block, 31-elastic component, 32-protective shell, 33-pull block, 34-crowbar, 35-card sleeve, 36-shrapnel, 37-card frame, 4-connecting plate frame, 41-rotating block, 42-bidirectional screw, 43-clamping block, 5-transparent shell, 51-laser grounding device. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope and application scope of the present invention are not limited. Example 1

[0037] An auxiliary device used in welding of mechanical parts, such as Figure 1-Figure 6 As shown, the mounting frame 11, the protective plate 12, the rotating handle 13, the first rotating rod 14, the air guide tube 15, the first expansion gas block 16, the rotating shaft 18, the air cylinder 111 and the limit assembly are included. The welding device 1 is used to install and fix the mounting frame 11. The front and rear sides of the left part of the mounting frame 11 are rotatably connected to the first rotating rod 14 through the damping ring. The protective plate 12 is fixedly connected to the outside of the first rotating rod 14. The right part of the mounting frame 11 is rotatably connected to the rotating shaft 18. The front side of the rotating shaft 18 is fixedly connected to The mounting frame 11 has a rotating handle 13, and a first expansion gas block 16 is fixedly connected to the left side of the mounting frame 11, and the first expansion gas block 16 is in contact with the welder 1. The mounting frame 11 has a gas cylinder 111 fixedly connected to the right side of the mounting frame 11, and the piston rod of the gas cylinder 111 is fixedly connected to the rotating shaft 18. The mounting frame 11 has an air guide tube 15 fixedly connected to the inside, and one end of the air guide tube 15 is fixedly connected and connected to the gas cylinder 111, and the other end of the air guide tube 15 is fixedly connected and connected to the first expansion gas block 16. A limiting assembly is provided on the mounting frame 11.

[0038] like Figure 1-Figure 4 As shown, the protective plate 12 is made of coated tempered glass and is used to provide comprehensive protection for workers.

[0039] like Figure 2 and Figure 4 As shown, a bolt is threadedly connected to the lower portion of the turning handle 13 , and a threaded hole is opened on the left portion of the mounting frame 11 , and the bolt is threadedly connected to the mounting frame 11 .

[0040] like Figure 3-Figure 6As shown, the limiting assembly includes a clamping block 17, a second expansion gas block 19 and a connecting pipe 110. The two second expansion gas blocks 19 are respectively fixed to the front and rear sides of the mounting frame 11. The second expansion gas block 19 is fixedly connected to the first expansion gas block 16 and is connected to the connecting pipe 110. The side of the second expansion gas block 19 away from the first expansion gas block 16 is fixedly connected with a clamping block 17. The clamping block 17 is slidably connected to the mounting frame 11, and the clamping block 17 is in contact with the first rotating rod 14.

[0041] like Figure 3 and Figure 4 As shown, a slot corresponding to the adjacent block 17 is formed in the middle of the first rotating rod 14 .

[0042] When a worker needs to weld a mechanical part, he can first put the ring on the left side of the mounting frame 11 and the first expansion gas block 16 on the left side of the welder 1, and then rotate the front and rear two protective plates 12 90 degrees away from the welder 1 and unfold them, and the front and rear two first rotating rods 14 are also rotated 90 degrees with the corresponding protective plates 12, and make the card slots of the first rotating rods 14 face the adjacent card blocks 17. At this time, the worker can rotate the rotating handle 13 and the rotating shaft 18 clockwise by 90 degrees, and make the bolts on the rotating handle 13 face the threaded holes on the mounting frame 11. The bolt is then screwed into the threaded hole to limit and fix the handle 13 and the shaft 18. During the clockwise rotation of the handle 13 and the shaft 18, the piston rod of the gas cylinder 111 also rotates clockwise with the shaft 18 and injects the gas in the gas cylinder 111 into the first expansion gas block 16 through the air guide pipe 15, so that the first expansion gas block 16 expands and squeezes the welder 1, thereby fixing the mounting frame 11 and other components on the welder 1, and part of the gas entering the first expansion gas block 16 is also injected into the second expansion gas block 16 on the front and rear sides through the connecting pipe 110. The gas block 19 is expanded, so that the second gas block 19 expands and drives the front and rear two clamping blocks 17 to move backwards until they are inserted into the corresponding clamping slots of the first rotating rod 14, so that the unfolded protective plate 12 can be limited and fixed. After that, the worker can use the welding device 1 to weld the mechanical parts, and the protective plate 12 made of coated tempered glass can block the flying sparks and weaken the strong light emitted during welding, so as to protect the worker's face, hands, eyes and other parts without affecting the field of vision and operation. After the welding is completed The bolt can be unscrewed out of the threaded hole and the handle 13, the shaft 18 and the piston rod of the gas cylinder 111 can be rotated 90° counterclockwise to reset, so that the gas in the first expansion gas block 16 and the second expansion gas block 19 is drawn back to the gas cylinder 111 through the air guide pipe 15 and the connecting pipe 110, and the first expansion gas block 16 and the second expansion gas block 19 are immediately restored to their original state, and the front and rear blocks 17 are moved toward each other and reset. At this time, the worker can remove the mounting frame 11 and other components from the welder 1 and rotate the front and rear protective plates 12 in the opposite direction to fold them together for easy storage. Example 2

[0043] On the basis of Example 1, Figure 7 and Figure 8 As shown, a guide mechanism is also included, which is arranged on the mounting frame 11. The guide mechanism includes a movable frame 2, a guide wheel 21, a rotating frame 22, a screw rod 23 and a second rotating rod 24. The second rotating rod 24 is rotatably connected to the left part of the mounting frame 11 through a damping ring. The rotating frame 22 is fixedly connected to the outside of the second rotating rod 24. The bottom of the rotating frame 2 is slidably connected to the movable frame 2. The bottom of the movable frame 2 is rotatably connected to the guide wheel 21. The upper part of the movable frame 2 is rotatably connected to the screw rod 23, and the screw rod 23 is threadedly connected to the rotating frame 22.

[0044] Before rotating the handle 13 and the rotating shaft 18 90° clockwise, the second rotating rod 24, the rotating frame 22 and the movable frame 2 and other components can also be rotated 90° clockwise, so that the movable frame 2 and the screw rod 23 and other components are parallel to the gun head on the left side of the welding device 1. At this time, the screw rod 23 can be rotated according to the length of the gun head of the welding device 1, thereby driving the movable frame 2 and the guide wheel 21 and other components to move left and right until the left end of the guide wheel 21 and the left end of the gun head of the welding device 1 are located on the same vertical line. After that, when the mechanical parts are linearly moved for welding, the guide wheel 21 and the movable frame 2 and other components can not only support the welding device 1, thereby dispersing the force on the gun head of the welding device 1 and improving the service life of the gun head, but also guide the linear movement of the welding device 1, so that the movement of the welding device 1 is more stable and the welding device 1 is prevented from being offset during movement, thereby helping to improve the welding effect of the welding device 1. When not in use, the second rotating rod 24, the rotating frame 22 and the movable frame 2 and other components can be rotated 90° counterclockwise to reset.

[0045] like Figure 8-Figure 10 As shown, a locking mechanism is also included, which is arranged on the mounting frame 11. The locking mechanism includes a top block 3, an elastic component 31, a pull block 33, a crowbar 34, a clamping sleeve 35, a spring piece 36 and a clamping frame 37. The top block 3 is slidably connected to the upper left side of the mounting frame 11, and the elastic component 31 is fixedly connected between the top block 3 and the mounting frame 11. The top block 3 and the turning handle 13 are pressed and matched. A pull block 33 is fixedly connected to the rear side of the top block 3. The left rear part of the mounting frame 11 is rotatably connected to the crowbar 34. The pull block 33 and the crowbar 34 are pressed and matched. A clamping frame 37 is slidably connected to the left rear part of the mounting frame 11. Two left and right spring pieces 36 are fixedly connected between the clamping frame 37 and the mounting frame 11. The clamping frame 37 and the crowbar 34 are pressed and matched. A clamping sleeve 35 is fixedly connected to the left rear part of the rotating frame 22, and the clamping sleeve 35 is in contact and matched with the clamping frame 37.

[0046] like Figure 8-Figure 10 As shown, a protective shell 32 is also included. The protective shell 32 is fixedly connected to the rear side of the mounting frame 11. The protective shell 32 is slidably connected to the card frame 37. The protective shell 32 is used to protect components such as the pull block 33, the crowbar 34 and the spring 36.

[0047] When the handle 13 and the shaft 18 rotate 90° clockwise, the handle 13 contacts and squeezes the top block 3, so that the top block 3 and the pull block 33 move upward, and the elastic component 31 is compressed immediately. The pull block 33 moves upward to squeeze the pry bar 34, so that the pry bar 34 rotates counterclockwise and contacts and squeezes the lower part of the bracket 37, so that the bracket 37 moves downward, and the spring sheet 36 is deformed and stretched immediately. Since the rotating frame 22 and the clamping sleeve 35 and other components have been rotated 90° clockwise at this time, the clamping sleeve 35 has been rotated to the bottom of the bracket 37, so the bracket 37 moves downward to insert. The card sleeve 35 is inserted into the card sleeve, so that the rotating frame 22 and other components can be limited and fixed after rotation, so as to prevent the rotating frame 22 and other components from rotating due to force during welding, thereby affecting subsequent use. When the handle 13 and the rotating shaft 18 are rotated 90° counterclockwise to reset, the top block 3 and the pull block 33 will move downward and reset under the action of their own gravity and the elastic component 31, and the card frame 37 will move upward and reset under the action of the spring piece 36 and drive the crowbar 34 to rotate clockwise and reset, wherein the protective shell 32 is used to shield and protect the pull block 33, the crowbar 34 and the spring piece 36 and other components.

[0048] like Figure 11-13 As shown, it also includes a fixing mechanism, which is arranged on the mounting frame 11. The fixing mechanism includes a connecting plate frame 4, a rotating block 41, a bidirectional screw 42 and a clamping block 43. The connecting plate frame 4 is fixedly connected to the top right side of the mounting frame 11. The connecting plate frame 4 is rotatably connected with the bidirectional screw 42 inside. The bidirectional screw 42 is fixedly connected with the rotating block 41 on both the front and rear sides. The connecting plate frame 4 is slidably connected with the clamping block 43 on both the front and rear sides. The clamping block 43 is threadedly connected to the bidirectional screw 42, and the clamping block 43 is in contact with the welder 1.

[0049] When the mounting frame 11 is fixed to the welder 1 by means of the first expansion gas block 16 and other components, the rotating block 41 and the bidirectional screw 42 can also be rotated forward, thereby driving the clamping blocks 43 on the front and rear sides to move toward each other until they contact and squeeze the welder 1. In this way, the mounting frame 11 can be firmly fixed to the left part of the welder 1 with the help of the clamping block 43 and other components, so as to prevent the mounting frame 11 and other components from accidentally falling off during welding and affecting the auxiliary and protective effects. When the mounting frame 11 needs to be removed, the rotating block 41 and the bidirectional screw 42 are rotated in the reverse direction, and the clamping blocks 43 on the front and rear sides are driven to move backwards to reset and separate from the welder 1.

[0050] like Figure 1 and Fig.14 As shown, an auxiliary mechanism is also included, which is arranged on the mobile frame 2. The auxiliary mechanism includes a transparent shell 5 and a laser grounding device 51. The laser grounding device 51 is fixedly connected to the lower side of the mobile frame 2. The transparent shell 5 is fixedly connected to the left and right sides of the lower part of the mobile frame 2.

[0051] When guiding the linear motion welding of the welder 1 by the guide wheel 21, the laser grounding device 51 can also be started. The laser grounding device 51 can emit a laser line and mark the welding path on the mechanical parts, so as to guide the linear motion welding of the welder 1 and avoid deviation of the welder 1 when moving, thereby helping to improve the welding effect of the welder 1. The transparent shell 5 is used to shield and protect the laser grounding device 51, and the laser grounding device 51 can be turned off when not in use.

[0052] Although the present invention is described in detail with reference to the above embodiments, it is obvious to those skilled in the art through this disclosure that various changes or modifications may be made to the present invention without departing from the principle and spirit of the present invention defined by the claims. Therefore, the detailed description of the embodiments of the present disclosure is only used to explain, not to limit the present invention, but the scope of protection is limited by the content of the claims.

Claims

1. An auxiliary device used in welding of mechanical parts, characterized in that: The invention comprises a mounting frame (11), a protective plate (12), a rotating handle (13), a first rotating rod (14), an air guide tube (15), a first expansion gas block (16), a rotating shaft (18), an air cylinder (111) and a limit assembly. The welding device (1) is used to mount and fix the mounting frame (11). The mounting frame (11) is rotatably connected to a pair of first rotating rods (14) via a damping ring. The first rotating rods (14) are fixedly connected to the protective plate (12). The mounting frame (11) is rotatably connected to the rotating shaft (18). The rotating shaft (18) is fixedly connected to The mounting frame (11) is fixedly connected to a first expansion gas block (16), the first expansion gas block (16) is in contact with the welder (1), the mounting frame (11) is fixedly connected to an air cylinder (111), the piston rod of the air cylinder (111) is fixedly connected to a rotating shaft (18), the mounting frame (11) is fixedly connected to an air guide tube (15), one end of the air guide tube (15) is fixedly connected to and communicates with the air cylinder (111), and the other end of the air guide tube (15) is fixedly connected to and communicates with the first expansion gas block (16), and a limit assembly is provided on the mounting frame (11).

2. The auxiliary device for welding mechanical parts according to claim 1, characterized in that: The protection plate (12) is made of coated tempered glass.

3. The auxiliary device for welding mechanical parts according to claim 2, characterized in that: The turning handle (13) is threadedly connected with a bolt, and the mounting frame (11) is provided with a threaded hole, and the bolt is threadedly connected to the mounting frame (11).

4. The auxiliary device for welding mechanical parts according to claim 3, characterized in that: The limiting assembly comprises a clamping block (17), a second expansion gas block (19) and a connecting pipe (110); the paired second expansion gas blocks (19) are fixedly connected to the mounting frame (11); the second expansion gas block (19) and the first expansion gas block (16) are fixedly connected and communicated with the connecting pipe (110); the second expansion gas block (19) is fixedly connected to the clamping block (17); the clamping block (17) is slidably connected to the mounting frame (11); and the clamping block (17) is in contact with the first rotating rod (14).

5. The auxiliary device for welding mechanical parts according to claim 4, characterized in that: The first rotating rod (14) is provided with a slot corresponding to the clamping block (17).

6. The auxiliary device for welding mechanical parts according to claim 5, characterized in that: The invention also comprises a guide mechanism, which is arranged on the mounting frame (11), and comprises a movable frame (2), a guide wheel (21), a rotating frame (22), a screw rod (23) and a second rotating rod (24). The second rotating rod (24) is rotatably connected to the mounting frame (11) via a damping ring, the second rotating rod (24) is fixedly connected to the rotating frame (22), the rotating frame (22) is slidably connected to the movable frame (2), the movable frame (2) is rotatably connected to the guide wheel (21), the movable frame (2) is rotatably connected to the screw rod (23), and the screw rod (23) is threadedly connected to the rotating frame (22).

7. The auxiliary device for welding mechanical parts according to claim 6, characterized in that: The device also includes a locking mechanism, which is arranged on the mounting frame (11). The locking mechanism includes a top block (3), an elastic component (31), a pull block (33), a crowbar (34), a clamping sleeve (35), a spring sheet (36) and a clamping frame (37). The top block (3) is slidably connected to the mounting frame (11). The elastic component (31) is fixedly connected between the top block (3) and the mounting frame (11). The top block (3) is extruded and matched with the rotating handle (13). The top block (3) A pull block (33) is fixedly connected, the mounting frame (11) is rotatably connected to a pry bar (34), the pull block (33) and the pry bar (34) are pressed together, the mounting frame (11) is slidably connected to a clamping frame (37), a pair of spring sheets (36) are fixedly connected between the clamping frame (37) and the mounting frame (11), the clamping frame (37) and the pry bar (34) are pressed together, and the rotating frame (22) is fixedly connected to a clamping sleeve (35), the clamping sleeve (35) and the clamping frame (37) are in contact and fit.

8. The auxiliary device for welding mechanical parts according to claim 7, characterized in that: It also includes a protective shell (32), the mounting frame (11) is fixedly connected to the protective shell (32), and the protective shell (32) is slidably connected to the card frame (37).

9. The auxiliary device for welding mechanical parts according to claim 8, characterized in that: The invention also comprises a fixing mechanism, which is arranged on the mounting frame (11), and comprises a connecting plate frame (4), a rotating block (41), a bidirectional screw (42) and a clamping block (43). The connecting plate frame (4) is fixedly connected to the mounting frame (11), the connecting plate frame (4) is rotatably connected to the bidirectional screw (42), the bidirectional screw (42) is fixedly connected to a pair of rotating blocks (41), the connecting plate frame (4) is slidably connected to a pair of clamping blocks (43), the clamping blocks (43) are threadedly connected to the bidirectional screw (42), and the clamping blocks (43) are in contact with and cooperate with the welder (1).

10. The auxiliary device for welding mechanical parts according to claim 9, characterized in that: The invention also comprises an auxiliary mechanism, which is arranged on the mobile frame (2), and comprises a transparent shell (5) and a laser grounding device (51). The laser grounding device (51) is fixedly connected to the mobile frame (2), and the mobile frame (2) is fixedly connected to a pair of transparent shells (5).

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