Welding tool for safety protection frame

Abstract

The welding tool for the safety protection frame is applied to the field of sheet metal part machining and comprises a base, a main supporting seat is arranged on the base, and a frame body is erected on the main supporting seat; the base is provided with a first fixing unit used for fixing the lower bottom plate, a second fixing unit used for fixing the upper bottom plate, a third fixing unit used for fixing the hinge block and a fourth fixing unit used for fixing the side bent plate, and the main supporting seat is provided with a fifth fixing unit used for fixing the handle. The first fixing unit comprises a limiting seat arranged on the base, a vertical plate bolt matched with the vertical plate nut is arranged on the limiting seat in a penetrating mode, and the end, facing the vertical plate nut, of the vertical plate bolt is in threaded connection with the vertical plate nut. The welding device has the technical effects that an operator can conveniently conduct welding operation, meanwhile, all parts are fixed in the welding process, all the parts are not prone to shaking, and the welding seam quality and the welding efficiency are improved.

Description

Technical Field

[0001] The present application relates to the technical field of sheet metal processing, and in particular to a welding tool for a safety protection frame. Background Art

[0002] The safety protection frame is an important component of the excavator, which ensures the safe operation of the excavator and the personal safety of the operator. It is usually made of multiple sheet metal parts welded together.

[0003] Reference Figure 1 The safety protection frame includes a frame body 1, which includes a plurality of connecting plates 2 and a round rod 3 for connecting the connecting plates 2, and also includes an upper bottom plate 4 and a lower bottom plate 5. A vertical bottom plate 6 is fixedly connected to the lower bottom plate 5, and a vertical plate positioning hole is opened on the vertical bottom plate 6. Vertical plate nuts 8 corresponding to the vertical plate positioning holes are resistance-welded on the vertical bottom plate 6. A groove 9 is opened on the upper bottom plate 4. The upper bottom plate 4 includes a long plate 10 and a short plate 11. The groove 9 is located between the long plate 10 and the short plate 11. The safety protection frame also includes two hinge blocks 12, a side bent plate 13 and a handle 14. Both hinge blocks 12 are provided with hinge positioning holes 7. The handle 14 is provided with a large circular hole 15 and a small circular hole 16. The side bent plate 13 is provided with a bent plate positioning hole, and a bent plate nut 17 corresponding to the bent plate positioning hole is resistance-welded on the side bent plate 13.

[0004] Reference Figure 1 The operator needs to manually weld the frame 1 with the upper base plate 4 and the lower base plate 5, manually weld the two hinge blocks 12 on both sides of the groove 9, and manually weld the side bending plate 13 and the handle 14 on the side of the frame 1, so that the finished safety protection frame is a whole after welding.

[0005] During the welding process of the above-mentioned safety protection frame, it is difficult to simultaneously fix the positions of the frame, upper base plate, lower base plate, hinge block, side bending plate and handle and weld them as a whole, which makes it difficult to accurately locate the relative positions of the frame, upper base plate, lower base plate, hinge block, side bending plate and handle, and the weld position is prone to deviation, resulting in uneven quality of the weld, which is time-consuming and labor-intensive and leads to low production efficiency. Summary of the invention

[0006] In order to help solve the problem that it is difficult to simultaneously fix the positions of the frame, upper base plate, lower base plate, hinge block, side bending plate and handle components during the welding process of the existing safety protection frame into a finished product, and the weld quality is poor and the welding efficiency is low, the present application provides a welding tool for a safety protection frame, which adopts the following technical scheme: it includes a base, the base is provided with a main support seat, the frame is mounted on the main support seat, the base is provided with a first fixing unit for fixing the lower base plate, a second fixing unit for fixing the upper base plate, a third fixing unit for fixing the hinge block and a fourth fixing unit for fixing the side bending plate, the main support seat is provided with a fifth fixing unit for fixing the handle, the first fixing unit includes a limit seat arranged on the base, the limit seat is provided with a vertical plate bolt matching the vertical plate nut, and the vertical plate bolt is threadedly connected with the vertical plate nut at one end facing the vertical plate nut.

[0007] Through the above technical scheme, when it is necessary to weld the frame, upper base plate, lower base plate, hinge block, side bending plate and handle into a product safety protection frame, the operator places the vertical base plate on the lower base plate in contact with the limit seat, sets up the frame on the main support seat and makes the frame and the lower base plate fit together, rotates the vertical plate bolts to make the vertical plate bolts and the vertical plate nuts of the vertical base plate threadedly connected, thereby achieving the fixation of the lower base plate; then uses the second fixing unit to fix the upper base plate; after placing the hinge block in contact with the upper base plate, uses the third fixing unit to fix the hinge block; after placing the side bending plate in contact with the side of the frame, uses the fourth fixing unit to fix the side bending plate; places the handle in contact with the side of the frame, uses the fifth fixing unit to fix the handle; finally, the operator uses the welding equipment to weld the contact points of the frame, upper base plate, lower base plate, hinge block, side bending plate and handle to be welded, which is convenient for the operator to perform welding operations, and it is not easy to shake between the components during the welding process, thereby improving the weld quality and production efficiency.

[0008] In a specific implementation scheme, the second fixing unit includes a bottom plate support seat arranged on the base, and two bottom plate positioning blocks are arranged on the surface of the bottom plate support seat facing away from the base, and the upper bottom plate is located between the two bottom plate positioning blocks and contacts with both bottom plate positioning blocks.

[0009] Through the above technical solution, the operator sets up the upper base plate on the base plate support seat and uses two base plate positioning blocks to limit the position of the upper base plate, thereby reducing the possibility of upper base plate deviation and improving the stability of the upper base plate position fixation.

[0010] In a specific possible implementation scheme, an anti-error block is provided on the support seat, and the long plate of the upper base plate is pressed tightly between the anti-error block and the base plate positioning block.

[0011] Through the above technical solution, since the upper base plate includes long and short plates, the long plate is pressed tightly between the anti-error block and the base plate positioning block by using the anti-error block, and the front and back placement positions of the upper base plate are distinguished, which plays an anti-mistake role and improves the accuracy of the placement of the upper base plate.

[0012] In a specific possible implementation manner, a mounting seat is provided on the base, a quick clamp is provided on the mounting seat, and the upper base plate is pressed tightly between the clamp end of the quick clamp and the base plate support seat.

[0013] Through the above technical solution, the upper base plate is pressed between the clamp end of the quick clamp and the base plate support seat by the quick clamp, thereby reducing the possibility of shaking of the upper base plate, achieving independent fixation of the upper base plate and improving the stability of the upper base plate placement.

[0014] In a specific feasible implementation scheme, the third fixing unit includes two articulated support seats arranged on the base, and the two articulated support seats are respectively provided with articulated positioning columns matching the articulated positioning holes, the articulated block is mounted on the articulated support seats and the articulated positioning columns pass through the articulated positioning holes.

[0015] Through the above technical solution, the operator sets up the articulated block on the articulated support seat, and passes the articulated positioning column through the articulated positioning hole of the articulated block to realize the positioning of the articulated block, thereby fixing the position of the articulated block and reducing the possibility of position deviation of the articulated block, thereby improving the welding quality.

[0016] In a specific feasible implementation scheme, the fourth fixing unit includes a side panel support seat arranged on the base, and the side panel support seat is provided with a bent plate bolt matching the bent plate nut, and one end of the bent plate bolt facing the bent plate nut is threadedly connected to the bent plate nut.

[0017] Through the above technical scheme, the operator sets up the side bending plate on the side plate support seat and makes the side bending plate fit with the side of the frame, and rotates the bending plate bolt to make the bending plate bolt and the bending plate nut of the side bending plate threadedly connected, thereby fixing the side bending plate. While fixing the position of the side bending plate, the possibility of position displacement of the side bending plate during welding is reduced, and the stability of the placement of the side bending plate is improved.

[0018] In a specific possible implementation scheme, a stud is provided on the side panel support seat, the outer edge of the stud is rotatably connected to a pressure plate, the outer edge of the stud is threadedly connected to a side panel nut, and the pressure plate is tightly pressed between the side panel nut and the side bending plate.

[0019] Through the above technical scheme, when the side bending plate is placed in place in accordance with the side of the frame, the operator rotates the pressure plate so that the surface of the pressure plate facing the side bending plate contacts the side bending plate, and then rotates the side plate nut to fix the position of the pressure plate, and presses the side bending plate between the pressure plate and the side plate support column to further fix the position of the side bending plate, thereby further reducing the possibility of position displacement of the side bending plate during welding and improving the stability of the placement of the side bending plate.

[0020] In a specific feasible implementation scheme, the fifth fixing unit includes a quick push clamp arranged on the main support seat, and the clamp end of the quick push clamp is provided with a push plate; when the clamp end of the quick push clamp is extended, the handle is pressed tightly between the push plate and the frame.

[0021] Through the above technical solution, after the handle is placed in place against the side of the frame, the operator pushes the quick push clamp so that the handle is pressed tightly between the clamp end of the quick push clamp and the frame, thereby fixing the handle, thereby reducing the possibility of handle shaking, achieving separate fixation of the handle while improving the stability of the handle placement.

[0022] In a specific implementation scheme, a first positioning column matching the large circular hole and a second positioning column matching the small circular hole are provided on the surface of the push plate facing the handle, the first positioning column passes through the large circular hole, and the second positioning column passes through the small circular hole.

[0023] Through the above technical solution, since the handle is provided with large circular holes and small circular holes of different sizes, the first positioning column is passed through the large circular hole and the second positioning column is passed through the small circular hole, which plays a role in preventing the handle from being placed incorrectly and improves the accuracy of the handle placement.

[0024] In a specific feasible implementation scheme, a positioning seat and a positioning frame are provided on the main support seat, a plurality of placement grooves matching the connecting plates are provided on the surface of the positioning seat facing away from the main support seat, a plurality of connecting plates are respectively mounted in the plurality of placement grooves, a mounting groove is provided on the positioning seat, a mounting bolt matching the mounting groove is passed through the positioning frame, one end of the mounting bolt facing the main support seat is threadedly connected in the mounting groove, and a plurality of connecting plates are pressed tightly between the positioning frame and the positioning seat.

[0025] Through the above technical solution, a number of connecting plates are respectively inserted into a number of placement grooves to limit the placement position of the connecting plates, thereby reducing the possibility of frame displacement during welding. The operator can use bolts to connect the positioning frame and the positioning seat, so that the connecting plate is pressed tightly between the positioning frame and the positioning seat, and the position of the connecting plate is further limited, which reduces the possibility of frame displacement during welding, improves the stability of the overall placement of the frame, and thus improves the welding quality.

[0026] In summary, the present application has the following beneficial technical effects: when it is necessary to weld the frame, upper base plate, lower base plate, hinge block, side bending plate and handle into a product safety protection frame, the operator places the vertical base plate on the lower base plate in contact with the limit seat, sets up the frame on the main support seat and makes the frame and the lower base plate fit together, rotates the vertical plate bolts to make the vertical plate bolts and the vertical plate nuts of the vertical base plate threadedly connected, thereby fixing the lower base plate; then the upper base plate is fixed by the second fixing unit; after placing the hinge block in contact with the upper base plate, the hinge block is fixed by the third fixing unit; after placing the side bending plate in contact with the side of the frame, the side bending plate is fixed by the fourth fixing unit; after placing the handle in contact with the side of the frame, the handle is fixed by the fifth fixing unit; finally, the operator uses welding equipment to weld the contact points of the frame, upper base plate, lower base plate, hinge block, side bending plate and handle to be welded, which is convenient for the operator to perform welding operations, and it is not easy to shake between the components during the welding process, thereby improving the weld quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of a security protection framework in the prior art.

[0028] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0029] Figure 3 It is a structural schematic diagram used to reflect the placement slot in the embodiment of the present application.

[0030] Figure numerals: 1, frame; 2, connecting plate; 3, round bar; 4, upper bottom plate; 5, lower bottom plate; 6, vertical bottom plate; 7, hinge positioning hole; 8, vertical plate nut; 9, groove; 10, long plate; 11, short plate; 12, hinge block; 13, side bending plate; 14, handle; 15, large round hole; 16, small round hole; 17, bent plate nut; 18, base; 19, frame support seat; 20, limit seat; 21, vertical plate bolt; 22, bottom plate support seat; 2 3. Bottom plate positioning block; 24. Anti-mistake block; 25. Mounting seat; 26. Quick clamp; 27. Articulated support seat; 28. Articulated positioning column; 29. ​​Side panel support seat; 30. Bending plate bolt; 31. Stud; 32. Pressure plate; 33. Side panel nut; 34. Quick push clamp; 35. Push plate; 36. First positioning column; 37. Second positioning column; 38. Positioning seat; 39. Positioning frame; 40. Placement slot; 41. Mounting slot; 42. Mounting bolt. DETAILED DESCRIPTION

[0031] The following is combined with Figure 2-3 This application is described in further detail.

[0032] The embodiment of the present application discloses a welding tool for a safety protection frame.

[0033] Reference Figure 2 and Figure 3 The welding tooling for the safety protection frame includes a base 18, a square tube is provided at the bottom of the base 18, and a plurality of weight-reducing holes are opened on the base 18 according to actual conditions. The weight-reducing holes reduce the weight of the base 18, making it convenient for the staff to carry the welding tooling as a whole and to facilitate the subsequent cleaning of the welding slag.

[0034] Reference Figure 2 and Figure 3 The main support seat is plugged into the base 18, and the frame 1 is mounted on the main support seat. In the embodiment of the present application, the main support seat is tilted according to the shape of the frame 1. The base 18 is provided with a first fixing unit for fixing the lower base plate 5, a second fixing unit for fixing the upper base plate 4, a third fixing unit for fixing the hinge block 12, and a fourth fixing unit for fixing the side curved plate 13. The main support seat is provided with a fifth fixing unit for fixing the handle 14.

[0035] Reference Figure 2 and Figure 3 The first fixing unit includes a limit seat 20 bolted to the base 18, and a vertical plate bolt 21 matching the vertical plate nut 8 is passed through the limit seat 20, and one end of the vertical plate bolt 21 facing the vertical plate nut 8 is threadedly connected with the vertical plate nut 8. Therefore, the operator places the vertical bottom plate 6 on the lower bottom plate 5 against the limit seat 20, sets the frame 1 on the main support seat so that the frame 1 is in contact with the lower bottom plate 5, and rotates the vertical plate bolt 21 to thread the vertical plate bolt 21 with the vertical plate nut 8 of the vertical bottom plate 6, thereby fixing the lower bottom plate 5.

[0036] Reference Figure 2 and Figure 3 The second fixing unit includes a bottom plate support seat 22 disposed on the base 18, and two bottom plate positioning blocks 23 are bolted to the surface of the bottom plate support seat 22 facing away from the base 18, and the upper bottom plate 4 is located between the two bottom plate positioning blocks 23 and contacts both bottom plate positioning blocks 23. The two bottom plate positioning blocks 23 in the embodiment of the present application both adopt an L-shaped structure. The operator sets the upper bottom plate 4 on the bottom plate support seat 22, and uses the two L-shaped bottom plate positioning blocks 23 to limit the position of the upper bottom plate 4, thereby reducing the possibility of the upper bottom plate 4 being offset and improving the stability of the upper bottom plate 4 being fixed.

[0037] Reference Figure 2 and Figure 3The support seat is plugged with an anti-mistake block 24, and the long board 10 of the upper bottom plate 4 is pressed tightly between the anti-mistake block 24 and the bottom plate positioning block 23. Therefore, since the upper bottom plate 4 includes long and short boards 11, the anti-mistake block 24 is used to press the long board 10 between the anti-mistake block 24 and the bottom plate positioning block 23, and the front and back placement positions of the upper bottom plate 4 are distinguished, which plays a fool-proof role and improves the accuracy of the placement of the upper bottom plate 4.

[0038] Reference Figure 2 and Figure 3 , a mounting seat 25 is provided on the base 18, a quick clamp 26 is bolted to the mounting seat 25, and the upper base plate 4 is pressed between the clamp end of the quick clamp 26 and the base plate support seat 22. In the embodiment of the present application, the number and position of the mounting seat 25 and the quick clamp 26 can be set according to actual conditions. Therefore, the upper base plate 4 is pressed between the clamp end of the quick clamp 26 and the base plate support seat 22 by the quick clamp 26, thereby reducing the possibility of shaking of the upper base plate 4, achieving the upper base plate 4 being fixed separately while improving the stability of the upper base plate 4.

[0039] Reference Figure 2 and Figure 3 The third fixing unit includes two hinge support seats 27 arranged on the base 18, and the two hinge support seats 27 are respectively provided with hinge positioning columns 28 matching the size of the hinge positioning hole 7, and the hinge block 12 is mounted on the hinge support seats 27 and the hinge positioning columns 28 pass through the hinge positioning hole 7. Therefore, the operator mounts the hinge block 12 on the hinge support seats 27, and makes the hinge positioning columns 28 pass through the hinge positioning hole 7 of the hinge block 12, so as to realize the positioning of the hinge block 12, realize the fixing of the position of the hinge block 12, and reduce the possibility of position deviation of the hinge block 12, thereby improving the welding quality.

[0040] Reference Figure 2 and Figure 3 The fourth fixing unit includes a side plate support seat 29 disposed on the base 18, and a bent plate bolt 30 matching the size of the bent plate nut 17 is passed through the side plate support seat 29, and one end of the bent plate bolt 30 facing the bent plate nut 17 is threadedly connected with the bent plate nut 17. Therefore, the operator sets the side bent plate 13 on the side plate support seat 29 and the side bent plate 13 fits the side of the frame 1, and rotates the bent plate bolt 30 to thread the bent plate bolt 30 with the bent plate nut 17 of the side bent plate 13, thereby fixing the side bent plate 13, fixing the position of the side bent plate 13, reducing the possibility of position deviation of the side bent plate 13 during welding, and improving the stability of the placement of the side bent plate 13.

[0041] Reference Figure 2 and Figure 3The side plate support seat 29 is fixedly connected with a stud 31, and the outer edge of the stud 31 is rotatably connected with a pressure plate 32. The outer edge of the stud 31 is threadedly connected with a side plate nut 33, and the pressure plate 32 is pressed tightly between the side plate nut 33 and the side bending plate 13. Therefore, when the side bending plate 13 is placed in place in accordance with the side of the frame body 1, the operator rotates the pressure plate 32 so that the surface of the pressure plate 32 facing the side bending plate 13 contacts the side bending plate 13, and then rotates the side plate nut 33 to fix the position of the pressure plate 32, and presses the side bending plate 13 between the pressure plate 32 and the side plate support column, further fixing the position of the side bending plate 13, further reducing the possibility of position deviation of the side bending plate 13 during welding, and improving the stability of the placement of the side bending plate 13.

[0042] Reference Figure 2 and Figure 3 The fifth fixing unit includes a quick push clamp 34 disposed on the main support seat. The quick push clamp 34 is located on one side of the frame 1. The clamp end of the quick push clamp 34 is connected to a push plate 35. When the clamp end of the quick push clamp 34 is extended, the handle 14 is pressed tightly between the push plate 35 and the frame 1. A first positioning column 36 matching the size of the large circular hole 15 and a second positioning column 37 matching the size of the small circular hole 16 are provided on the surface of the push plate 35 facing the handle 14. The first positioning column 36 passes through the large circular hole 15, and the second positioning column 37 passes through the small circular hole 16. By using the first positioning column 36 passing through the large circular hole 15 and the second positioning column 37 passing through the small circular hole 16, the handle 14 is prevented from being placed incorrectly, thereby improving the accuracy of the position of the handle 14.

[0043] Therefore, after placing the handle 14 in place against the side of the frame 1, the operator pushes the quick push clamp 34 so that the handle 14 is pressed tightly between the clamp end of the quick push clamp 34 and the frame 1, thereby fixing the handle 14, thereby reducing the possibility of shaking of the handle 14, and improving the stability of the placement of the handle 14 while fixing the handle 14 separately.

[0044] Reference Figure 2 and Figure 3 A positioning seat 38 and a positioning frame 39 are provided on the main support seat. A plurality of placement grooves 40 matching the size of the connecting plate 2 are opened on the surface of the positioning seat 38 facing away from the main support seat. A plurality of connecting plates 2 are respectively mounted in the plurality of placement grooves 40. A mounting groove 41 is opened on the positioning seat 38. A mounting bolt 42 matching the size of the mounting groove 41 is passed through the positioning frame 39. One end of the mounting bolt 42 facing the main support seat is threadedly connected in the mounting groove 41, and a plurality of connecting plates 2 are pressed tightly between the positioning frame 39 and the positioning seat 38.

[0045] Therefore, several connecting plates 2 are respectively inserted into several placement grooves 40 to limit the placement position of the connecting plates 2, thereby reducing the possibility of the frame 1 shifting during the welding process. The operator can use bolts to connect the positioning frame 39 with the positioning seat 38, so that the connecting plate 2 is pressed tightly between the positioning frame 39 and the positioning seat 38, and the position of the connecting plate 2 is further limited, thereby reducing the possibility of frame shifting during the welding process, improving the stability of the overall placement of the frame 1, and thus improving the welding quality.

[0046] The implementation principle of the embodiment of the present application is as follows: the operator places the vertical base plate 6 on the lower base plate 5 in contact with the limiting seat 20, sets the upper base plate 4 on the base plate support seat 22, sets the frame 1 on the main support seat and the frame 1 is in contact with the lower base plate 5, and rotates the vertical plate bolts 21 to make the vertical plate bolts 21 threadedly connected with the vertical plate nuts 8 of the vertical base plate 6, thereby fixing the lower base plate 5; the operator uses two L-shaped base plate positioning blocks 23 to limit the position of the upper base plate 4, and the upper base plate 4 is pressed tightly between the clamping end of the quick clamp 26 and the base plate support seat 22, thereby fixing the position of the upper base plate 4; the operator sets the hinge block 12 on the hinge support seat 27, so that the hinge positioning column 28 passes through the hinge positioning hole 7 of the hinge block 12, thereby positioning the hinge block 12, and fixing the hinge block 12 is fixed in position; the operator sets the side bending plate 13 on the side plate support seat 29 and the side bending plate 13 is fitted with the side of the frame 1, rotates the bending plate bolt 30 to make the bending plate bolt 30 threadedly connected with the bending plate nut 17 of the side bending plate 13, thereby fixing the side bending plate 13, and then rotates the pressure plate 32 so that the surface of the pressure plate 32 facing the side bending plate 13 contacts the side bending plate 13, and rotates the side plate nut 33 to fix the position of the pressure plate 32, further improving the stability of the position of the side bending plate 13; after placing the handle 14 in place in fit with the side of the frame 1, the operator pushes the quick push clamp 34 so that the handle 14 is pressed tightly between the clamp end of the quick push clamp 34 and the frame 1, the first positioning column 36 passes through the large circular hole 15 and the second positioning column 37 passes through the small circular hole 16, thereby fixing the handle 14.

[0047] Finally, the operator uses welding equipment to weld the contact points of the frame 1, upper base plate 4, lower base plate 5, hinge block 12, side bending plate 13 and handle 14 to be welded, so that the components are welded to form a finished safety protection frame, which is convenient for the operator to perform welding operations and is less likely to cause shaking between the components during the welding process, thereby improving the weld quality and production efficiency.

[0048] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A welding tool for a safety protection frame, characterized in that: The invention comprises a base (18), wherein a main support seat is arranged on the base (18), a frame (1) is mounted on the main support seat, wherein a first fixing unit for fixing a lower base plate (5), a second fixing unit for fixing an upper base plate (4), a third fixing unit for fixing a hinge block (12) and a fourth fixing unit for fixing a side bending plate (13) are arranged on the base (18), wherein a fifth fixing unit for fixing a handle (14) is arranged on the main support seat, wherein the first fixing unit comprises a limiting seat (20) arranged on the base (18), wherein a vertical plate bolt (21) matching with a vertical plate nut (8) is passed through the limiting seat (20), and the vertical plate bolt (21) is threadedly connected with the vertical plate nut (8) at one end facing the vertical plate nut (8).

2. The welding tool for the safety protection frame according to claim 1, characterized in that: The second fixing unit comprises a bottom plate support seat (22) arranged on the base (18), two bottom plate positioning blocks (23) are arranged on the surface of the bottom plate support seat (22) facing away from the base (18), and the upper bottom plate (4) is located between the two bottom plate positioning blocks (23) and is in contact with both bottom plate positioning blocks (23).

3. The welding tool for the safety protection frame according to claim 2 is characterized in that: An anti-error block (24) is provided on the support seat, and the long plate (10) of the upper base plate (4) is tightly pressed between the anti-error block (24) and the base plate positioning block (23).

4. The welding tool for the safety protection frame according to claim 2, characterized in that: The base (18) is provided with a mounting seat (25), the mounting seat (25) is provided with a quick clamp (26), and the upper base plate (4) is pressed tightly between the clamp end of the quick clamp (26) and the base plate support seat (22).

5. The welding tool for the safety protection frame according to claim 1, characterized in that: The third fixing unit comprises two hinged support seats (27) arranged on the base (18), and the two hinged support seats (27) are respectively provided with hinged positioning columns (28) matching the hinged positioning holes (7), and the hinge block (12) is mounted on the hinged support seats (27) and the hinged positioning columns (28) pass through the hinged positioning holes (7).

6. The welding tool for the safety protection frame according to claim 1, characterized in that: The fourth fixing unit comprises a side plate support seat (29) arranged on the base (18), and a bent plate bolt (30) matching the bent plate nut (17) is passed through the side plate support seat (29), and one end of the bent plate bolt (30) facing the bent plate nut (17) is threadedly connected to the bent plate nut (17).

7. The welding tool for the safety protection frame according to claim 6, characterized in that: The side plate support seat (29) is provided with a stud (31), the outer edge of the stud (31) is rotatably connected to a pressure plate (32), the outer edge of the stud (31) is threadedly connected to a side plate nut (33), and the pressure plate (32) is tightly pressed between the side plate nut (33) and the side bending plate (13).

8. The welding tool for the safety protection frame according to claim 1, characterized in that: The fifth fixing unit comprises a quick push clamp (34) arranged on the main support seat, and a push plate (35) is provided at the clamp end of the quick push clamp (34); when the clamp end of the quick push clamp (34) is extended, the handle (14) is pressed tightly between the push plate (35) and the frame (1).

9. The welding tool for the safety protection frame according to claim 8, characterized in that: A first positioning column (36) matching the large circular hole (15) and a second positioning column (37) matching the small circular hole (16) are provided on the surface of the push plate (35) facing the handle (14); the first positioning column (36) passes through the large circular hole (15), and the second positioning column (37) passes through the small circular hole (16).

10. The welding tool for the safety protection frame according to claim 1, characterized in that: The main support seat is provided with a positioning seat (38) and a positioning frame (39); a surface of the positioning seat (38) facing away from the main support seat is provided with a plurality of placement grooves (40) matching the connecting plates (2); a plurality of connecting plates (2) are respectively mounted in the plurality of placement grooves (40); a mounting groove (41) is provided on the positioning seat (38); a mounting bolt (42) matching the mounting groove (41) is passed through the positioning frame (39); one end of the mounting bolt (42) facing the main support seat is threadedly connected in the mounting groove (41), and a plurality of connecting plates (2) are pressed tightly between the positioning frame (39) and the positioning seat (38).

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