A semi-automatic plasma arc welding machine for metal parts

Abstract

The present invention discloses a semi-automatic plasma arc welding machine for metal parts, specifically related to the field of welding technology. It includes a bottom plate, and a motor is fixedly connected to the upper end of the bottom plate. The upper end of the motor extends with a motor shaft, and one end of the motor shaft is fixedly connected with a Z-shaped rotating rod. A second rotating seat is fixedly connected to the upper end of the bottom plate, and a second rotating shaft is rotatably connected to the upper end of the second rotating seat. The motor can drive the Z-shaped rotating rod to rotate counterclockwise through the motor shaft, quickly driving the arc-shaped tooth plate to rotate clockwise by 60 degrees. The arc-shaped tooth plate drives the turntable to rotate counterclockwise quickly by 180 degrees through a gear and a first rotating shaft. During the counterclockwise rotation of the turntable, automatic blanking, automatic assembly, automatic brushing of welding oil, and automatic pushing out of the welded first workpiece and second workpiece can be completed; as the Z-shaped rotating rod continues to rotate counterclockwise, the Z-shaped rotating rod will drive the arc-shaped tooth plate to slowly rotate counterclockwise by 60 degrees.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and more specifically, the present invention relates to a semi-automatic plasma arc welding machine for metal parts. Background Art

[0002] The connection between mechanical components includes detachable connection and non-detachable connection. Among them, the non-detachable connection includes welding, that is, two parts are connected together by melting metal, which is suitable for occasions where high-strength connection is required. With the development of modern welding technology, there are many welding methods, and plasma arc welding is a relatively common welding method. Plasma arc welding refers to a fusion welding method that uses a plasma arc with a high energy density beam as the welding heat source. Plasma arc welding has the characteristics of concentrated energy, high productivity, fast welding speed, small stress deformation, and stable arc. In handling automation equipment, the arc-shaped support block metal parts are often assembled by two arc-shaped workpieces and then fixed by plasma arc welding. The existing welding of arc-shaped support block metal parts is completed through manual feeding, manual welding, manual discharging, and manual slag scraping, resulting in low welding efficiency and poor welding quality. Summary of the Invention

[0003] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a semi-automatic plasma arc welding machine for metal parts. The technical problem to be solved by the present invention is that the existing welding of arc-shaped support block metal parts is completed through manual feeding, manual welding, manual discharging, and manual slag scraping, resulting in low welding efficiency and poor welding quality. To achieve the above object, the present invention provides the following technical solution: A semi-automatic plasma arc welding machine for metal parts, including a bottom plate, an electric motor is fixedly connected to the upper end of the bottom plate, a motor shaft extends upward from the upper end of the electric motor, one end of the motor shaft is fixedly connected to a Z-shaped rotating rod, a second rotating seat is fixedly connected to the upper end of the bottom plate, a second rotating shaft is rotatably connected to the upper end of the second rotating seat, an arc-shaped tooth plate is rotatably connected to the upper end of the second rotating shaft, a third track groove is provided on the arc-shaped tooth plate, and the Z-shaped rotating rod is slidably connected to the third track groove. A first rotating seat is fixedly connected to the upper end of the bottom plate, a first rotating shaft is rotatably connected to the upper end of the first rotating seat, a turntable is fixedly connected to the upper end of the first rotating shaft, a gear is fixedly connected to the outer cylindrical surface of the first rotating shaft, and the arc-shaped tooth plate is engaged with the gear.

[0004] In a preferred embodiment, a plurality of first support legs are fixedly connected to the upper end of the bottom plate, an arc-shaped frame is fixedly connected to the upper ends of the plurality of first support legs, a first track groove is provided on the arc-shaped frame, a second track groove is provided on the arc-shaped frame, and there is a step between the second track groove and the first track groove.

[0005] In a preferred embodiment, a second support leg is fixedly connected to the upper end of the bottom plate. A first blanking frame is fixedly connected to one side of the second support leg, and the first blanking frame is located above the first track groove. A plurality of groups of first workpieces are contained in the first blanking frame. A third support leg is fixedly connected to the upper end of the bottom plate. A second blanking frame is fixedly connected to one side of the third support leg, and the second blanking frame is located above the second track groove. A plurality of groups of second workpieces are contained in the second blanking frame.

[0006] In a preferred embodiment, a fixing groove is provided on the turntable. One side of the inner wall of the fixing groove is fixedly connected to a first spring. One end of the first spring is fixedly connected to an inclined scraping knife, and the inclined scraping knife is slidably buckled with the fixing groove. A plasma arc welding gun is fixedly connected to the inner side of the turntable.

[0007] In a preferred embodiment, a welding oil tank is fixedly connected to the upper end of the turntable. A sponge brush is fixedly connected to the outer side of the turntable, and the sponge brush is connected to the welding oil tank through a pipeline. A pump is provided in the welding oil tank. A push plate is fixedly connected to one side of the turntable.

[0008] In a preferred embodiment, a fourth support leg is fixedly connected to the upper end of the bottom plate. A fixing frame is fixedly connected to the upper end of the fourth support leg. A second spring is fixedly connected inside the fixing frame. One end of the second spring is fixedly connected to an inclined stop block. A collection frame is fixedly connected to the upper end of the bottom plate.

[0009] The technical effects and advantages of the present invention:

[0010] The motor can drive the Z-shaped rotating rod to rotate counterclockwise through the motor shaft ( Figure 1 as shown), quickly driving the arc-shaped tooth plate to rotate clockwise by 60 degrees ( Figure 1 as shown, from Figure 2 rotating into Figure 4 state. During this process, since the angle required for the Z-shaped rotating rod to rotate is small, the arc-shaped tooth plate will rotate quickly), the arc-shaped tooth plate drives the turntable to rotate counterclockwise quickly by 180 degrees through the gear and the first rotating shaft (the whole process takes 5 s, which takes a short time and improves the overall working efficiency). During the counterclockwise rotation of the turntable, the automatic blanking, automatic assembly, automatic brushing of welding oil, and automatic pushing out of the welded first workpieces and second workpieces of the first workpieces and the second workpieces can be completed; as the Z-shaped rotating rod continues to rotate counterclockwise, the Z-shaped rotating rod will drive the arc-shaped tooth plate to slowly rotate counterclockwise by 60 degrees ( Figure 2 as shown. During this process, since the angle required for the Z-shaped rotating rod to rotate is large, the arc-shaped tooth plate will rotate slowly), the arc-shaped tooth plate drives the turntable to rotate clockwise quickly by 180 degrees through the gear and the first rotating shaft (from Figure 4 rotating into Figure 2Status (the whole process takes 10 s). When the turntable rotates clockwise, welding and slag removal can be completed. Since the rotation is slow, the welding time is longer and the welding effect is better. The inclined scraper can, on the one hand, push down the first workpiece and the second workpiece after welding, and on the other hand, scrape the slag on the welds of the first workpiece and the second workpiece. Brief Description of the Drawings

[0011] Figure 1 It is a perspective view of the first state of the present invention.

[0012] Figure 2 It is a top view of the first state of the present invention.

[0013] Figure 3 It is a perspective view of the second state of the present invention.

[0014] Figure 4 It is a top view of the second state of the present invention.

[0015] Figure 5 It is a perspective view of the first part of the present invention.

[0016] Figure 6 is Figure 5 an enlarged view of A in

[0017] Figure 7 It is a perspective view of the arc-shaped frame of the present invention.

[0018] Figure 8 of the present invention Figure 7 an enlarged view of B in

[0019] Figure 9 It is a perspective view of the second part of the present invention.

[0020] Figure 10 It is a cross-sectional view of the fixed frame of the present invention.

[0021] Figure 11 It is a perspective view of the first workpiece and the second workpiece of the present invention.

[0022] Figure 12 It is a perspective view of the workbench of the present invention.

[0023] The reference numerals are: 1, bottom plate; 2, collection box; 3, push plate; 4, turntable; 5, sponge brush; 6, welding fuel tank; 7, first support leg; 8, first track groove; 9, arc-shaped frame; 10, second track groove; 11, first blanking frame; 12, second support leg; 13, third support leg; 14, second blanking frame; 15, fixed frame; 16, inclined baffle; 17, arc-shaped toothed plate; 18, first rotating seat; 19, first rotating shaft; 20, fourth support leg; 21, third track groove; 22, plasma arc welding gun; 23, fixed groove; 24, first spring; 25, inclined scraper; 26, gear; 27, motor; 28, Z-shaped rotating rod; 29, second rotating seat; 30, second rotating shaft; 31, first workpiece; 32, second workpiece; 36, second spring. Detailed implementation mode

[0024] From Figures 1 - 12 , the present invention provides a semi-automatic plasma arc welding machine for metal parts, including a bottom plate 1. The upper end of the bottom plate 1 is fixedly connected with a motor 27. The upper end of the motor 27 extends with a motor shaft. One end of the motor shaft is fixedly connected with a Z-shaped rotating rod 28. The upper end of the bottom plate 1 is fixedly connected with a second rotating seat 29. The upper end of the second rotating seat 29 is rotatably connected with a second rotating shaft 30. The upper end of the second rotating shaft 30 is rotatably connected with an arc-shaped toothed plate 17. A third track groove 21 is arranged on the arc-shaped toothed plate 17, and the Z-shaped rotating rod 28 is slidably connected with the third track groove 21. The upper end of the bottom plate 1 is fixedly connected with a first rotating seat 18. The upper end of the first rotating seat 18 is rotatably connected with a first rotating shaft 19. The upper end of the first rotating shaft 19 is fixedly connected with a turntable 4. The outer cylindrical surface of the first rotating shaft 19 is fixedly connected with a gear 26, and the arc-shaped toothed plate 17 is meshed with the gear 26; the motor 27 can drive the Z-shaped rotating rod 28 to rotate counterclockwise through the motor shaft ( Figure 1 as a reference), quickly drive the arc-shaped toothed plate 17 to rotate clockwise by 60 degrees ( Figure 1 and Figure 2 shown, from Figure 2 rotate into Figure 4 state. In this process, since the angle that the Z-shaped rotating rod 28 needs to rotate is small, the arc-shaped toothed plate 17 will rotate clockwise quickly. On the contrary, if from Figure 4 rotate into Figure 2 state, the arc-shaped toothed plate 17 will rotate counterclockwise slowly and return. This motion characteristic is the quick return characteristic.), the arc-shaped toothed plate 17 drives the turntable 4 to rotate counterclockwise quickly by 180 degrees through the gear 26 and the first rotating shaft 19 (the whole process takes 5 s, and the time consumed is short, improving the overall working efficiency). As the Z-shaped rotating rod 28 continues to rotate counterclockwise, the Z-shaped rotating rod 28 will drive the arc-shaped toothed plate 17 to slowly rotate counterclockwise by 60 degrees ( Figure 4Taking this as a reference, since the angle that the Z-shaped rotating rod 28 needs to rotate is relatively large in this process, the arc-shaped toothed plate 17 will rotate slowly), and the arc-shaped toothed plate 17 drives the turntable 4 to rotate clockwise rapidly by 180 degrees through the gear 26 and the first rotating shaft 19 (from Figure 4 Rotate into Figure 2 state, and the whole process takes 10 s).

[0025] Multiple groups of first support legs 7 are fixedly connected to the upper end of the bottom plate 1. Multiple groups of first support legs 7 are fixedly connected to the upper end of the arc-shaped frame 9. A first track groove 8 is arranged on the arc-shaped frame 9. A second track groove 10 is arranged on the arc-shaped frame 9, and there is a step between the second track groove 10 and the first track groove 8 (as Figure 6 shown, the first track groove 8 is higher than the second track groove 10, and the height difference between the two is equal to the shell thickness of the second workpiece 32, which is convenient for the first workpiece 31 to be inserted into the second workpiece 32); a second support leg 12 is fixedly connected to the upper end of the bottom plate 1. A first blanking frame 11 is fixedly connected to one side of the second support leg 12, and the first blanking frame 11 is located above the first track groove 8. Multiple groups of first workpieces 31 are contained in the first blanking frame 11. A third support leg 13 is fixedly connected to the upper end of the bottom plate 1. A second blanking frame 14 is fixedly connected to one side of the third support leg 13, and the second blanking frame 14 is located above the second track groove 10. Multiple groups of second workpieces 32 are contained in the second blanking frame 14; during the process that the turntable 4 rotates counterclockwise rapidly by 180 degrees ( Figure 2 taking this as a reference), the inclined scraper 25 will drive the combination of the first workpiece 31 and the second workpiece 32 welded at the bottom of the second blanking frame 14 to press the inclined block 16 (under the action of the inclined surface of the inclined block 16, the inclined block 16 will be compressed and retracted into the fixed frame 15 by the second spring 36), and the combination of the welded first workpiece 31 and the second workpiece 32 will finally fall into the collection frame 2. When the inclined scraper 25 leaves below the second blanking frame 14, a new second workpiece 32 falls into the second track groove 10. When the push plate 3 passes below the first blanking frame 11, it will drive the first workpiece 31 to rotate counterclockwise ( Figure 1 taking this perspective as a reference) and insert it into the second workpiece 32 (in this process, due to the obstruction of the inclined block 16, the frictional force during the insertion of the first workpiece 31 into the second workpiece 32 is not enough to drive the second workpiece 32 to press the inclined block 16, and the inclined block 16 is used to block the second workpiece 32 to prevent the second workpiece 32 from moving during the insertion of the first workpiece 31), and at the same time, when the push plate 3 rotates to Figure 3 and Figure 4 the shown state (when the turntable 4 rotates counterclockwise to the limit), it is still inserted between the first blanking frame 11 and the first track groove 8 to block the first workpiece 31 from falling.

[0026] A fixed groove 23 is provided on the turntable 4. One side of the inner wall of the fixed groove 23 is fixedly connected with a first spring 24. One end of the first spring 24 is fixedly connected with an inclined scraping knife 25, and the inclined scraping knife 25 is slidably snap-connected with the fixed groove 23. The inner side of the turntable 4 is fixedly connected with a plasma arc welding gun 22; the plasma arc welding gun 22 can weld the combination of the first workpiece 31 and the second workpiece 32 (during the process of the turntable 4 rotating clockwise by 180 degrees, the rotation speed of the turntable 4 is slow during this process, and the plasma arc welding gun 22 welds the weld seam when passing through the combination of the first workpiece 31 and the second workpiece 32). On the one hand, the inclined scraping knife 25 can push down the first workpiece 31 and the second workpiece 32 after welding is completed, and on the other hand, it can scrape the welding slag on the weld seam of the first workpiece 31 and the second workpiece 32).

[0027] A welding oil tank 6 is fixedly connected to the upper end of the turntable 4. A sponge brush 5 is fixedly connected to the outside of the turntable 4, and the sponge brush 5 is connected to the welding oil tank 6 through a pipeline. A pump is provided in the welding oil tank 6. A push plate 3 is fixedly connected to one side of the turntable 4. The pump in the welding oil tank 6 can send the welding oil to the sponge brush 5 through the pipeline, and the sponge brush 5 can brush the welding oil on the unwelded weld seams of the first workpiece 31 and the second workpiece 32 (during the process of the turntable 4 rotating counterclockwise by 180 degrees, the sponge brush 5 brushes the welding oil at the weld seams of the first workpiece 31 and the second workpiece 32).

[0028] The upper end of the bottom plate 1 is fixedly connected with a fourth support leg 20. The upper end of the fourth support leg 20 is fixedly connected with a fixed frame 15. A second spring 36 is fixedly connected inside the fixed frame 15. One end of the second spring 36 is fixedly connected with an inclined stop block 16. The upper end of the bottom plate 1 is fixedly connected with a collection frame 2; when the push plate 3 passes below the first blanking frame 11, it will drive the first workpiece 31 to rotate counterclockwise and insert into the second workpiece 32 (during this process, due to the obstruction of the inclined stop block 16, the frictional force during the process of the first workpiece 31 inserting into the second workpiece 32 is not sufficient to drive the second workpiece 32 to press the inclined stop block 16, and the second workpiece 32 will not move on the second track groove 10).

[0029] This device is used for welding metal parts, and this device is placed on a placement table ( Figure 12 ).

[0030] During specific operation, in the initial state as Figure 1 and Figure 2 shown, a set of welded combination of the second workpiece 32 and the first workpiece 31 is added into the second blanking frame 14. The welded combination of the second workpiece 32 and the first workpiece 31 falls into the second track groove 10. Then, multiple groups of the second workpiece 32 are added into the second blanking frame 14, and multiple groups of the first workpiece 31 are added into the first blanking frame 11. The lowermost group of the first workpiece 31 falls into the first track groove 8. The motor 27 drives the Z-shaped rotating rod 28 to rotate counterclockwise through the motor shaft ( Figure 1 shown), quickly driving the arc-shaped tooth plate 17 to rotate clockwise by 60 degrees (Figure 1 and Figure 2 As shown, it rotates from Figure 2 to Figure 4 state. During this process, since the angle that the Z-shaped rotating rod 28 needs to rotate is small, the arc-shaped tooth plate 17 will rotate quickly clockwise. On the contrary, the arc-shaped tooth plate 17 will rotate slowly counterclockwise and return. This motion characteristic is the quick-return characteristic.), the arc-shaped tooth plate 17 drives the turntable 4 to rotate quickly counterclockwise by 180 degrees through the gear 26 and the first rotating shaft 19 (from Figure 2 to Figure 4 state, and the whole process takes 5 s, which takes a short time and improves the overall working efficiency). During this process, the inclined scraper 25 will drive the combination of the first workpiece 31 and the second workpiece 32 welded at the bottom of the second blanking frame 14 to press the inclined block 16 (under the action of the inclined surface of the inclined block 16, the inclined block 16 will compress the second spring 36 and retract into the fixed frame 15). The combination of the welded first workpiece 31 and the second workpiece 32 finally falls into the collection frame 2. When the inclined scraper 25 leaves below the second blanking frame 14, a new group of second workpieces 32 fall into the second track groove 10. When the pushing plate 3 passes below the first blanking frame 11, it will drive the first workpiece 31 to rotate counterclockwise and insert it into the second workpiece 32 (during this process, due to the block of the inclined block 16, the frictional force during the insertion of the first workpiece 31 into the second workpiece 32 is not enough to drive the second workpiece 32 to press the inclined block 16), and at the same time, when the pushing plate 3 rotates to Figure 3 and Figure 4 shown state (the turntable 4 rotates counterclockwise to the limit), it is still inserted between the first blanking frame 11 and the first track groove 8, blocking the first workpiece 31 from falling, and at the same time, the sponge brush 5 brushes the welding oil at the weld of the combination of the first workpiece 31 and the second workpiece 32 located on the second track groove 10;

[0031] As the Z-shaped rotating rod 28 continues to rotate counterclockwise( Figure 2 shown), the Z-shaped rotating rod 28 will drive the arc-shaped tooth plate 17 to rotate slowly counterclockwise by 60 degrees( Figure 2 shown. During this process, since the angle that the Z-shaped rotating rod 28 needs to rotate is large, the arc-shaped tooth plate 17 will rotate slowly), and the arc-shaped tooth plate 17 drives the turntable 4 to rotate quickly clockwise by 180 degrees through the gear 26 and the first rotating shaft 19 (from Figure 4 to Figure 2Status, the whole process takes 10 s). The fourth support leg 20 starts when passing the combination of the first workpiece 31 and the second workpiece 32 on the second track groove 10, and welds the combination of the first workpiece 31 and the second workpiece 32. The welding process takes a long time to improve the welding effect. Subsequently, the inclined scraper 25 will scrape the welding slag. Since there is a step between the first track groove 8 and the second track groove 10, the combination of the welded first workpiece 31 and the second workpiece 32 will not move. When the push plate 3 is separated from below the first blanking frame 11, a group of first workpieces 31 fall into the first track groove 8. Repeating the above operations can complete the automatic blanking, automatic assembly, automatic brushing of welding oil, automatic welding, automatic removal of welding slag, and automatic unloading of the first workpiece 31 and the second workpiece 32. On the one hand, the inclined scraper 25 can push down the welded first workpiece 31 and the second workpiece 32, and on the other hand, it can scrape the welding slag of the welds of the first workpiece 31 and the second workpiece 32.

[0032] Finally, the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A semi-automatic plasma arc welding machine for metal parts, comprising a bottom plate (1), characterized in that: The upper end of the bottom plate (1) is fixedly connected with a motor (27). The upper end of the motor (27) is provided with a motor shaft extending therefrom. One end of the motor shaft is fixedly connected with a Z-shaped rotating rod (28). The upper end of the bottom plate (1) is fixedly connected with a second rotating seat (29). The upper end of the second rotating seat (29) is rotatably connected with a second rotating shaft (30). The upper end of the second rotating shaft (30) is rotatably connected with an arc-shaped toothed plate (17). A third track groove (21) is provided on the arc-shaped toothed plate (17), and the Z-shaped rotating rod (28) is slidably connected with the third track groove (21). The upper end of the bottom plate (1) is fixedly connected with a first rotating seat (18). The upper end of the first rotating seat (18) is rotatably connected with a first rotating shaft (19). The upper end of the first rotating shaft (19) is fixedly connected with a turntable (4). The outer cylindrical surface of the first rotating shaft (19) is fixedly connected with a gear (26), and the arc-shaped toothed plate (17) is engaged with the gear (26); The upper end of the bottom plate (1) is fixedly connected with multiple groups of first support legs (7). The upper ends of the multiple groups of first support legs (7) are fixedly connected with an arc-shaped frame (9). A first track groove (8) is provided on the arc-shaped frame (9). A second track groove (10) is provided on the arc-shaped frame (9), and there is a step between the second track groove (10) and the first track groove (8); The upper end of the bottom plate (1) is fixedly connected with a second support leg (12). One side of the second support leg (12) is fixedly connected with a first blanking frame (11), and the first blanking frame (11) is located above the first track groove (8). The first blanking frame (11) contains multiple groups of first workpieces (31). The upper end of the bottom plate (1) is fixedly connected with a third support leg (13). One side of the third support leg (13) is fixedly connected with a second blanking frame (14). The second blanking frame (14) is located above the second track groove (10). The second blanking frame (14) contains multiple groups of second workpieces (32); A fixing groove (23) is provided on the turntable (4). One side of the inner wall of the fixing groove (23) is fixedly connected with a first spring (24). One end of the first spring (24) is fixedly connected with an inclined scraper (25), and the inclined scraper (25) is slidably snap-connected with the fixing groove (23). A plasma welding torch (22) is fixedly connected to the inner side of the turntable (4); A push plate (3) is fixedly connected to one side of the turntable (4); The upper end of the bottom plate (1) is fixedly connected with a fourth support leg (20). The upper end of the fourth support leg (20) is fixedly connected with a fixing frame (15). A second spring (36) is fixedly connected inside the fixing frame (15). One end of the second spring (36) is fixedly connected with an inclined stop block (16); During the counterclockwise rotation of the turntable (4), on the one hand, when the push plate (3) passes below the first blanking frame (11), it will drive the first workpiece (31) to rotate counterclockwise and insert it into the second workpiece (32). On the other hand, the inclined scraping knife (25) will drive the combination of the first workpiece (31) and the second workpiece (32) welded at the bottom of the second blanking frame (14) to press the inclined baffle (16). At this time, the inclined baffle (16) will shrink into the fixed frame (15) and no longer block the combination of the first workpiece (31) and the second workpiece (32) after welding. Thus, the combination of the first workpiece (31) and the second workpiece (32) after welding is discharged. When the turntable (4) rotates clockwise, the plasma arc welding gun (22) can weld the combination of the first workpiece (31) and the second workpiece (32), and at the same time, the inclined scraping knife (25) can scrape the welding slag on the weld of the first workpiece (31) and the second workpiece (32).

2. A semi-automatic plasma arc welding machine for metal parts according to claim 1, characterized in that: A welding oil tank (6) is fixedly connected to the upper end of the turntable (4). A sponge brush (5) is fixedly connected to the outside of the turntable (4), and the sponge brush (5) is connected to the welding oil tank (6) through a pipeline. A pump is arranged in the welding oil tank (6).

3. A semi-automatic plasma arc welding machine for metal parts according to claim 1, characterized in that: A collection frame (2) is fixedly connected to the upper end of the bottom plate (1).

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