A semi-automatic plasma arc welding machine for food detection metal blocks

Abstract

The present invention discloses a semi-automatic plasma arc welding machine for food detection metal blocks, specifically relating to plasma arc welding production technology, including a first sliding frame. A blanking frame is fixedly connected to the upper end of the first sliding frame. Multiple groups of second workpieces are installed in the blanking frame. A fixed plate is fixedly connected to one side of the blanking frame. A motor is fixedly connected to the upper end of the fixed plate. The lower end of the motor extends to be provided with a motor shaft. A first gear is fixedly connected to the lower end of the motor shaft. A second gear is meshed with one side of the first gear. A plasma arc welding torch is arranged inside the second gear; the motor drives the first gear to rotate counterclockwise through the motor shaft, and the first gear drives the second gear to rotate clockwise, thereby driving the special-shaped turntable to rotate clockwise. As the special-shaped turntable rotates clockwise, the automatic blanking and assembly of the first workpiece and the second workpiece are completed, and the first workpiece and the second workpiece are automatically welded.

Description

Technical Field

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

[0002] Plasma arc welding is a welding method that uses a plasma arc as a heat source to melt the connection of two metals. The advantage is that within a certain thickness range, the workpiece does not need to be grooved or have a gap. In the field of food detection, the metal used for food detection needs to have a certain safety factor, such as wear resistance and corrosion resistance, and different positions have different requirements to cope with different working environments. This kind of metal has a high cost and is usually wrapped outside other materials. At the same time, in order to save costs and facilitate connection with other workpieces, it is usually selected to be connected with other metals or rubber plastics with high plasticity. Food detection metal blocks are usually welded to other metals. The existing semi-automatic plasma arc welding machines for food detection metal blocks only have a single welding function, and manual assembly of the workpiece is required, and the assembled workpiece needs to be placed at a predetermined position before welding, which is not only time-consuming and laborious, but also has a certain degree of danger. 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 food detection metal blocks. The technical problem to be solved by the present invention is that the existing semi-automatic plasma arc welding machines for food detection metal blocks only have a single welding function, and manual assembly of the workpiece is required, and the assembled workpiece needs to be placed at a predetermined position before welding, which is not only time-consuming and laborious, but also has a certain degree of danger.

[0004] To achieve the above object, the present invention provides the following technical solution: a semi-automatic plasma arc welding machine for food detection metal blocks, including a first sliding frame, the upper end of the first sliding frame is fixedly connected with a blanking frame, the blanking frame is filled with multiple groups of second workpieces, one side of the blanking frame is fixedly connected with a fixed plate, the upper end of the fixed plate is fixedly connected with a motor, the lower end of the motor extends to be provided with a motor shaft, the lower end of the motor shaft is fixedly connected with a first gear, a second gear is meshed with one side of the first gear, a plasma arc welding gun is arranged inside the second gear and is eccentrically arranged, the upper end of the second gear is fixedly connected with a special-shaped turntable, the upper end of the special-shaped turntable is fixedly connected with an inclined convex block, a square sliding frame is slidably connected to the blanking frame and is in contact with the special-shaped turntable, multiple groups of third springs are fixedly connected between the square sliding frame and the blanking frame, the lower end of the square sliding frame is fixedly connected with an L-shaped push plate, the lower end of the first sliding frame is provided with a second sliding frame, the lower end of the second sliding frame is fixedly connected with a limiting frame, multiple groups of first workpieces are placed inside the second sliding frame, a top plate is slidably connected inside the limiting frame, the lower end of the top plate is fixedly connected with a lifting rod, the lower end of the lifting rod is fixedly connected with a lifting frame, and one end of the lifting frame is located above the inclined convex block, one side of the first sliding frame is fixedly connected with an extended limiting frame, and the lifting frame is slidably connected with the extended limiting frame, the lower end of the lifting frame is fixedly connected with a top rod, a ball is arranged at the lower end of the top rod, a first spring is fixedly connected between the limiting frame and the lifting frame, an assembly through hole is arranged at the bottom of the first sliding frame and is located directly above the top plate;

[0005] The special-shaped turntable is composed of a semi-circle and a semi-ellipse. There are four points a, b, c, and d on the special-shaped turntable. Points a and c are respectively located at the two long-axis endpoints of the semi-ellipse, point b is located at the short-axis endpoint of the semi-ellipse, point d is located at the midpoint of the arc, the inclined surface of the inclined convex block faces point b, and the plasma arc welding gun corresponds to the position of point b on the special-shaped turntable.

[0006] In a preferred embodiment, one side of the inner wall of the second sliding frame is fixedly connected with a second spring, one end of the second spring is fixedly connected with a fixed push plate, a feeding port is arranged at the upper end of the second sliding frame, a track groove is arranged on one side of the second sliding frame, and the fixed push plate is slidably connected with the track groove.

[0007] In a preferred embodiment, two groups of second support legs are fixedly connected to the lower end of the second sliding frame, and a first support leg is fixedly connected to the lower end of the first sliding frame.

[0008] In a preferred embodiment, the first workpiece includes a rubber base, the upper end of the rubber base is fixedly connected to a metal seat, the upper end of the metal seat is provided with an arc-shaped protrusion, the second workpiece is provided with an arc-shaped groove, and a second groove is arranged inside the second workpiece, and a first groove is arranged on one side of the second groove.

[0009] Technical effects and advantages of the present invention:

[0010] Among them, the motor drives the first gear to rotate counterclockwise through the motor shaft (taking Figure 1 as a reference), the first gear drives the second gear to rotate clockwise, thereby driving the special-shaped turntable to rotate clockwise. In the initial state, point b contacts the square sliding frame, and the ejector rod is located directly above point b ( Figure 1 the state shown). As the special-shaped turntable rotates clockwise, it will first change from the contact between point b and the square sliding frame to the contact between point c and the square sliding frame. During this process, the third spring will be compressed, and the square sliding frame drives the L-shaped push plate to move leftward. The L-shaped push plate moves away from below the blanking frame, and a set of second workpieces in the blanking frame fall into the first sliding frame. At the same time, the lifting frame is driven by the ejector rod to move upward under the action of the inclined surface of the inclined protrusion (the height of the upward movement is exactly such that the first workpiece in the second sliding frame can be perfectly clamped into the second workpiece). At this time, the lifting rod drives the top plate to rise, the top plate pushes the first workpiece upward, the first workpiece passes through the assembly through hole and inserts into the second workpiece, and the arc-shaped protrusion just inserts into the arc-shaped groove, completing the assembly of the first workpiece and the second workpiece, facilitating subsequent semi-automatic plasma arc welding. From the contact between point c and the square sliding frame to the contact between point d and the square sliding frame, and then from the contact between point d and the square sliding frame to the contact between point a and the square sliding frame ( Figure 1 as a reference, during this process, the special-shaped turntable rotates 180 degrees clockwise). During this process, the plasma arc welding gun will be started, and plasma arc welding will be performed at the arc-shaped groove. This process is fully automatic, and finally the welded workpiece can be taken off manually. Description of the drawings

[0011] Figure 1 It is the first-state first three-dimensional view of the present invention.

[0012] Figure 2 It is the second-state three-dimensional view of the present invention.

[0013] Figure 3 It is the first-state cross-sectional view of the present invention.

[0014] Figure 4 It is the second-state cross-sectional view of the present invention.

[0015] Figure 5 It is the first-state top view of the present invention.

[0016] Figure 6 It is the second-state top view of the present invention.

[0017] Figure 7 This is the first perspective view of the first workpiece and the second workpiece of the present invention.

[0018] Figure 8 This is the second perspective view of the first workpiece and the second workpiece of the present invention.

[0019] Figure 9 This is the second perspective view of the first state of the present invention.

[0020] Figure 10 This is the perspective view of the placement table of the present invention.

[0021] The reference numerals are as follows:

[0022] 1. blanking frame; 2. square sliding frame; 3. first sliding frame; 4. first support leg; 5. lifting frame; 6. limiting frame; 7. lifting rod; 8. first spring; 9. second sliding frame; 10. track groove; 11. fixed push plate; 12. second support leg; 13. second spring; 14. feeding port; 15. first workpiece; 16. second workpiece; 17. first gear; 18. fixing plate; 19. motor; 20. special-shaped turntable; 21. second gear; 22. third spring; 23. L-shaped push plate; 24. plasma arc welding gun; 25. top plate; 26. assembly through hole; 27. inclined convex block; 28. rubber base; 29. metal seat; 30. arc-shaped protrusion; 31. arc-shaped groove; 32. first groove; 33. second groove; 34. extended limiting frame; 35. ejector rod. Detailed implementation manners

[0023] By Figures 1 - 10, the present invention provides a semi-automatic plasma arc welding machine for food detection metal blocks, including a first sliding frame 3. A blanking frame 1 is fixedly connected to the upper end of the first sliding frame 3. A plurality of groups of second workpieces 16 are contained in the blanking frame 1. A fixed plate 18 is fixedly connected to one side of the blanking frame 1. A motor 19 is fixedly connected to the upper end of the fixed plate 18. The lower end of the motor 19 extends to be provided with a motor shaft. A first gear 17 is fixedly connected to the lower end of the motor shaft. A second gear 21 is engaged with one side of the first gear 17. A plasma arc welding gun 24 is arranged inside the second gear 21, and the plasma arc welding gun 24 is eccentrically arranged (the distance from the plasma arc welding gun 24 to the center of the second gear 21 is equal to the inner diameter of the arc-shaped groove 31). A special-shaped turntable 20 is fixedly connected to the upper end of the second gear 21. An inclined convex block 27 is fixedly connected to the upper end of the special-shaped turntable 20. A square sliding frame 2 is slidably connected to the blanking frame 1, and the square sliding frame 2 is in contact with the special-shaped turntable 20 (point b on the edge of the special-shaped turntable 20). A plurality of groups of third springs 22 are fixedly connected between the square sliding frame 2 and the blanking frame 1. An L-shaped push plate 23 is fixedly connected to the lower end of the square sliding frame 2. A second sliding frame 9 is arranged at the lower end of the first sliding frame 3. A limiting frame 6 is fixedly connected to the lower end of the second sliding frame 9. A plurality of groups of first workpieces 15 are placed inside the second sliding frame 9. A top plate 25 is slidably connected inside the limiting frame 6. A lifting rod 7 is fixedly connected to the lower end of the top plate 25. A lifting frame 5 is fixedly connected to the lower end of the lifting rod 7, and one end of the lifting frame 5 is located above the inclined convex block 27. An extended limiting frame 34 is fixedly connected to one side of the first sliding frame 3, and the lifting frame 5 is slidably connected to the extended limiting frame 34. A top rod 35 is fixedly connected to the lower end of the lifting frame 5. A ball is arranged at the lower end of the top rod 35. A first spring 8 is fixedly connected between the limiting frame 6 and the lifting frame 5. An assembly through hole 26 is arranged at the bottom of the first sliding frame 3, and the assembly through hole 26 is located directly above the top plate 25; the special-shaped turntable 20 is composed of a semi-circle and a semi-ellipse. There are four points a, b, c, and d on the special-shaped turntable 20. Points a and c are respectively located at the two long-axis endpoints of the semi-ellipse. Point b is located at the short-axis endpoint of the semi-ellipse. Point d is located at the midpoint of the arc. The inclined surface of the inclined convex block 27 faces point b. The plasma arc welding gun 24 corresponds to the position of point b on the special-shaped turntable 20; the motor 19 drives the first gear 17 to rotate counterclockwise through the motor shaft (with Figure 1 as the reference), the first gear 17 drives the second gear 21 to rotate clockwise, thereby driving the special-shaped turntable 20 to rotate clockwise. In the initial state, point b is in contact with the square sliding frame 2, and the top rod 35 is located directly above point b ( Figure 1 the state shown), as the special-shaped turntable 20 rotates clockwise, it will first change from the contact between point b and the square sliding frame 2 to the contact between point c and the square sliding frame 2 (with Figure 1Taking [[]] as a reference, during this process, the special-shaped turntable 20 rotates 90 degrees clockwise. During this process, the third spring 22 will be compressed, and the square sliding frame 2 drives the L-shaped push plate 23 to move leftward. The L-shaped push plate 23 moves away from below the blanking frame 1, and a set of second workpieces 16 in the blanking frame 1 fall into the first sliding frame 3. At the same time, the lifting frame 5 is lifted under the action of the inclined surface of the inclined convex block 27, and at the same time, the lifting frame 5 is driven upward by the ejector rod 35 under the action of the inclined surface of the inclined convex block 27 (the height of the upward movement just enables the first workpiece 15 in the second sliding frame 9 to be perfectly clamped into the second workpiece 16). The top plate 25 will push the first workpiece 15 upward, and the first workpiece 15 will pass through the assembly through-hole 26 and insert into the second workpiece 16, and the arc-shaped protrusion 30 just inserts into the arc-shaped groove 31.

[0024] Subsequently, the special-shaped turntable 20 changes from contacting the square sliding frame 2 at point c to contacting the square sliding frame 2 at point d, and then changes from contacting the square sliding frame 2 at point d to contacting the square sliding frame 2 at point a (taking [[]] as a reference, during this process, the special-shaped turntable 20 rotates 180 degrees clockwise). During this process, the plasma welding torch 24 will be started, and plasma arc welding will be performed at the arc-shaped groove 31 to fix the first workpiece 15 and the second workpiece 16. Figure 1 Taking [[]] as a reference, during this process, the special-shaped turntable 20 rotates 180 degrees clockwise. During this process, the plasma welding torch 24 will be started, and plasma arc welding will be performed at the arc-shaped groove 31 to fix the first workpiece 15 and the second workpiece 16.

[0025] One side of the inner wall of the second sliding frame 9 is fixedly connected with a second spring 13. One end of the second spring 13 is fixedly connected with a fixed push plate 11. The upper end of the second sliding frame 9 is provided with a feeding port 14. One side of the second sliding frame 9 is provided with a track groove 10, and the fixed push plate 11 is slidably connected with the track groove 10; when the special-shaped turntable 20 changes from contacting the square sliding frame 2 at point a to contacting the square sliding frame 2 at point b, during this process, the lifting frame 5 will move downward due to the ejector rod 35 sliding down along the inclined surface of the inclined convex block 27. The lifting frame 5 slides downward under the action of the first spring 8, and the top plate 25 will descend into the limit frame 6. Under the action of the second spring 13, the fixed push plate 11 will push the first workpiece 15 to move leftward, and a set of first workpieces 15 will move back onto the top plate 25 (the initial state shown in [[]]). Figure 3 the initial state shown in [[]].

[0026] Two groups of second support legs 12 are fixedly connected to the lower end of the second sliding frame 9, and a first support leg 4 is fixedly connected to the lower end of the first sliding frame 3; the first workpiece 15 includes a rubber base 28, the upper end of the rubber base 28 is fixedly connected with a metal seat 29, the upper end of the metal seat 29 is provided with an arc-shaped protrusion 30, the second workpiece 16 is provided with an arc-shaped groove 31, the second workpiece 16 is provided with a second groove 33, and one side of the second groove 33 is provided with a first groove 32.

[0027] This device is used for semi-automatic welding of food detection metal blocks, and this device is placed on the placement table ( Figure 10 ).

[0028] During specific operation, pull the fixed push plate 11, add multiple groups of first workpieces 15 into the second sliding frame 9 from the loading port 14, add multiple groups of second workpieces 16 into the blanking frame 1, and pre-place several groups of second workpieces 16 in the first sliding frame 3 to Figure 1 and Figure 5 The state shown is the initial state. Start the motor 19. The motor 19 drives the first gear 17 to rotate counterclockwise through the motor shaft (with Figure 1 as the reference). The first gear 17 drives the second gear 21 to rotate clockwise (the first gear 17 is made of alloy steel), thereby driving the special-shaped turntable 20 to rotate clockwise. In the initial state, point b contacts the square sliding frame 2, and the ejector rod 35 is directly above point b ( Figure 1 the state shown). As the special-shaped turntable 20 rotates clockwise, it will first change from point b contacting the square sliding frame 2 to point c contacting the square sliding frame 2 (with Figure 1 as the reference. During this process, the special-shaped turntable 20 rotates 90 degrees clockwise). During this process, the third spring 22 will be compressed, and the square sliding frame 2 drives the L-shaped push plate 23 to move leftward. The L-shaped push plate 23 moves away from below the blanking frame 1, and a group of second workpieces 16 in the blanking frame 1 fall into the first sliding frame 3. At the same time, the lifting frame 5 is driven by the ejector rod 35 to move upward under the action of the inclined surface of the inclined convex block 27 (the upward movement height is exactly such that the first workpiece 15 in the second sliding frame 9 can be perfectly clamped into the second workpiece 16). At this time, the lifting rod 7 drives the top plate 25 to rise, the top plate 25 pushes up the first workpiece 15, the first workpiece 15 passes through the assembly through hole 26 and inserts into the second workpiece 16, and the arc-shaped protrusion 30 just inserts into the arc-shaped groove 31. The plasma welding gun 24 rotates to directly above the arc-shaped groove 31;

[0029] As the special-shaped turntable 20 continues to rotate clockwise, it will first change from point c contacting the square sliding frame 2 to point d contacting the square sliding frame 2, and then from point d contacting the square sliding frame 2 to point a contacting the square sliding frame 2 (with Figure 1 as the reference. During this process, the special-shaped turntable 20 rotates 180 degrees clockwise). During this process, the plasma welding gun 24 will be started to perform plasma arc welding at the arc-shaped groove 31 to fix the first workpiece 15 and the second workpiece 16 (since the cda section is an arc, the L-shaped push plate 23 remains stationary, which is convenient for welding the arc-shaped groove 31. At the same time, the plasma welding gun 24 starts to work when it just rotates to directly above the arc-shaped groove 31 and stops working when it leaves directly above the arc-shaped groove 31).

[0030] As the special-shaped turntable 20 continues to rotate clockwise, the contact point with the square sliding frame 2 will change from point a to point b. During this process, the lifting frame 5 will move downward due to the sliding of the ejector rod 35 along the inclined surface of the inclined convex block 27. The lifting frame 5 slides downward under the action of the first spring 8, and the top plate 25 will descend into the limit frame 6. Under the action of the second spring 13, the fixed push plate 11 will push the first workpiece 15 to move leftward, and a group of first workpieces 15 will move back onto the top plate 25 ( Figure 3 the initial state shown). At the same time, the square sliding frame 2 moves rightward under the action of the third spring 22, driving the L-shaped push plate 23 to push the second workpiece 16 directly below the blanking frame 1 to move rightward by one station. A new group of second workpieces 16 moves to directly above the assembly through hole 26. Repeat the above operations to complete the automatic blanking and assembly of the first workpiece 15 and the second workpiece 16, and automatically weld the first workpiece 15 and the second workpiece 16. Finally, manually take out the combination of the first workpiece 15 and the second workpiece 16 from the right side of the first sliding frame 3.

[0031] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A semi-automatic plasma arc welding machine for metal blocks for food inspection, comprising a first sliding frame (3), characterized in that: The upper end of the first sliding frame (3) is fixedly connected to a blanking frame (1), and a plurality of groups of second workpieces (16) are arranged in the blanking frame (1). A fixing plate (18) is fixedly connected to one side of the blanking frame (1), and a motor (19) is fixedly connected to the upper end of the fixing plate (18). A motor shaft is extended from the lower end of the motor (19), and a first gear (17) is fixedly connected to the lower end of the motor shaft. A second gear (21) is meshed with one side of the first gear (17), and the second gear (21) A plasma arc welding gun (24) is arranged inside the blanking frame (1), and the plasma arc welding gun (24) is eccentrically arranged. The upper end of the second gear (21) is fixedly connected to a special-shaped turntable (20), and the upper end of the special-shaped turntable (20) is fixedly connected to an inclined protrusion (27). A square sliding frame (2) is slidably connected to the blanking frame (1), and the square sliding frame (2) is in contact with the special-shaped turntable (20). A plurality of groups of third springs (22) are fixedly connected between the square sliding frame (2) and the blanking frame (1). The lower end of the square sliding frame (2) is fixedly connected to the special-shaped turntable (20). An L-shaped push plate (23) is fixedly connected, a second sliding frame (9) is arranged at the lower end of the first sliding frame (3), a limit frame (6) is fixedly connected at the lower end of the second sliding frame (9), a plurality of first workpieces (15) are placed in the second sliding frame (9), a top plate (25) is slidably connected in the limit frame (6), a lifting rod (7) is fixedly connected at the lower end of the top plate (25), a lifting frame (5) is fixedly connected at the lower end of the lifting rod (7), and one end of the lifting frame (5) is located at the inclined protrusion ( 27), an extension limit frame (34) is fixedly connected to one side of the first sliding frame (3), and the lifting frame (5) is slidably connected to the extension limit frame (34), a top rod (35) is fixedly connected to the lower end of the lifting frame (5), a ball bearing is arranged at the lower end of the top rod (35), a first spring (8) is fixedly connected between the limit frame (6) and the lifting frame (5), an assembly through hole (26) is arranged at the bottom of the first sliding frame (3), and the assembly through hole (26) is located directly above the top plate (25); The special-shaped turntable (20) is composed of a semicircle and a semi-ellipse. Four points a, b, c and d are arranged on the special-shaped turntable (20). Points a and c are respectively located at the two major axis endpoints of the semi-ellipse, point b is located at the minor axis endpoint of the semi-ellipse, and point d is located at the midpoint of the arc. The inclined surface of the inclined protrusion (27) faces point b, and the plasma arc welding gun (24) corresponds to the position of point b on the special-shaped turntable (20).

2. A semi-automatic plasma arc welding machine for food inspection metal blocks according to claim 1, characterized in that: A second spring (13) is fixedly connected to one side of the inner wall of the second sliding frame (9), one end of the second spring (13) is fixedly connected to a fixed push plate (11), a loading port (14) is provided at the upper end of the second sliding frame (9), a track groove (10) is provided on one side of the second sliding frame (9), and the fixed push plate (11) is slidably connected to the track groove (10).

3. A semi-automatic plasma arc welding machine for food inspection metal blocks according to claim 1, characterized in that: The lower end of the second sliding frame (9) is fixedly connected to two groups of second supporting legs (12), and the lower end of the first sliding frame (3) is fixedly connected to the first supporting leg (4).

4. A semi-automatic plasma arc welding machine for food inspection metal blocks according to claim 1, characterized in that: The first workpiece (15) comprises a rubber base (28), the upper end of the rubber base (28) is fixedly connected to a metal base (29), the upper end of the metal base (29) is provided with an arc-shaped protrusion (30), the second workpiece (16) is provided with an arc-shaped groove (31), the second workpiece (16) is provided with a second groove (33), and the first groove (32) is provided on one side of the second groove (33).

5. The semi-automatic plasma arc welding machine for food inspection metal blocks according to claim 1, characterized in that: The first gear (17) is made of alloy steel.

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