Plasma arc cutting and welding machine for sofa frame production and its usage method

Abstract

This invention relates to the field of sofa frame production equipment, specifically a plasma arc cutting and welding machine for sofa frames and its usage method. This equipment addresses the problems of cumbersome manual positioning and insufficient precision in cutting irregular shapes during metal tube cutting by improving upon the following structure: an L-shaped frame is installed on the top of the base support box, on which a rotatable transmission roller assembly is mounted; a worm gear drive in the power mechanism automatically feeds the metal tubes onto the transmission rollers; the baffle position is adjustable, adapting to different tube diameters through a threaded tube, adjusting screw, and synchronous belt linkage, ensuring close contact between the metal tube and the transmission rollers; the U-shaped frame of the cutting mechanism houses a rectangular slide and a stepper motor-driven moving plate, enabling bidirectional movement of the cutting nozzle, which, in conjunction with gooseneck tube fine-tuning, completes irregular shape cutting. The method includes adjusting the baffle spacing, positioning the synchronous belt, automatic tube feeding, and irregular shape cutting steps. This solution can automatically position the metal tube and accurately cut irregular shapes, improving processing efficiency and yield.

Description

Technical Field

[0001] This invention relates to the field of combined welding or cutting equipment, and more particularly to a plasma arc cutting and welding machine for sofa manufacturing frames and its usage method. Background Technology

[0002] Currently, processing metal sofa frames is an essential part of sofa production, involving steps such as cutting the frame. While plasma cutting is a mature technology, it often has the following shortcomings when cutting metal tubes in practice:

[0003] Currently, when using metal tubes as sofa frames for cutting and processing, the length of the metal tubes is often quite long, requiring manual adjustment of their position. This makes the cutting process rather cumbersome, as it necessitates constant manual adjustment of the metal tubes.

[0004] Furthermore, when cutting metal tubes, it is often difficult to control the movement path of the plasma cutting head when cutting into irregular shapes, which can easily lead to defective products during the cutting process.

[0005] To address the aforementioned issues, this invention proposes a plasma arc cutting and welding machine for sofa manufacturing frames and its usage method. Summary of the Invention

[0006] This invention provides a plasma arc cutting and welding machine for sofa production frames and its usage method, which solves the shortcomings of the prior art in that it cannot automatically adjust the position of the metal tube and cannot accurately cut irregular openings in the metal tube when cutting it.

[0007] This invention provides the following technical solution:

[0008] A plasma arc cutting and welding machine for sofa manufacturing frames includes:

[0009] The base frame has a support box welded to its top;

[0010] An L-shaped frame is welded to the top of the support box. Multiple rotating shafts are rotatably connected at equal intervals on the L-shaped frame. A transmission roller is welded to the top of the rotating shaft, and the bottom of the rotating shaft extends into the support box.

[0011] A power mechanism is installed on one side of the support box and extends into its interior, is connected to the inner wall of one side of the support box, and is connected to multiple rotating shafts respectively, for driving the multiple rotating shafts to rotate, thereby driving the metal tube to move;

[0012] A limiting mechanism, installed on the L-shaped frame, is used to limit the metal tube, so that the metal tube is in close contact with the multiple transmission rollers;

[0013] A cutting mechanism, located on one side of the base frame, includes a plasma cutting welding machine and a drive assembly. A cutting nozzle is connected to the drive assembly and is connected to the plasma cutting welding machine for cutting metal pipes.

[0014] The power mechanism drives the transmission roller to rotate to move the metal tube, the limiting mechanism ensures stable transmission of the metal tube, and the cutting mechanism cuts the metal tube.

[0015] In one possible design, the power mechanism includes:

[0016] A drive motor is fixedly mounted on one side of the support box by bolts. Its output shaft extends into the support box and is welded with a transmission shaft. One end of the transmission shaft is rotatably connected to the inner wall of one side of the support box.

[0017] Multiple transmission components are installed at equal intervals on the transmission shaft, and each transmission component is connected to a corresponding rotating shaft.

[0018] The drive motor is started to drive the transmission shaft to rotate, which in turn drives multiple transmission components to move, thereby driving the rotating shaft and the transmission roller to rotate and realize the automatic movement of the metal tube.

[0019] In one possible design, the transmission assembly includes:

[0020] The worm gear is fixedly mounted on the corresponding rotating shaft via a key connection;

[0021] The worm gear is fixedly mounted on the drive shaft by a key connection and meshes with the worm wheel;

[0022] When the worm rotates with the transmission shaft, it drives the rotating shaft and the transmission roller to rotate stably through meshing with the worm wheel.

[0023] In one possible design, the limiting mechanism includes:

[0024] A baffle is provided on the horizontal side of the L-shaped frame. Multiple mounting holes are equally spaced on the baffle. A baffle roller is rotatably connected in the mounting hole to block the limiting metal tube and make it in close contact with the transmission roller.

[0025] Multiple support components are installed at equal intervals on one side of the baffle and connected to the top of one side of the L-shaped frame;

[0026] An adjustment component, connecting multiple support components and the top of the L-shaped frame, is used to adjust the lateral position of the baffle to accommodate metal tubes of different sizes.

[0027] In one possible design, the support component includes:

[0028] A connecting plate is welded to the top of one side of the baffle.

[0029] A support frame is welded to the top of one side of the L-shaped frame, and a U-shaped support plate is welded to one side of its bottom.

[0030] The connecting plate passes through the U-shaped support plate and is slidably connected to its inner side. The adjusting component passes through the support frame and is connected to the top of the connecting plate, thereby realizing the horizontal sliding support and lateral position adjustment of the baffle.

[0031] In one possible design, the regulating component includes:

[0032] The mounting plate is welded to the top of the L-shaped frame, and threaded pipes are symmetrically and rotatably connected to it.

[0033] The adjusting screw is threaded through and connected inside the threaded tube.

[0034] A connecting frame is welded to one end of the two adjusting screws and passes through multiple support frames and is welded to the top of multiple connecting plates respectively;

[0035] A timing pulley is fixedly mounted on the threaded tube, and the two timing pulleys are connected by a timing belt drive.

[0036] A support plate is welded to one side of the mounting plate. A clamping plate is rotatably connected to the top side of the support plate via a pin. The clamping plate is located above the synchronous belt and cooperates with the support plate to clamp and position the synchronous belt. A stop strip is glued to one side of the mounting plate. The stop strip contacts one side of the clamping plate and is used to brake and limit the clamping plate. A handle is glued to the top of the clamping plate.

[0037] Specifically, by pulling the synchronous belt, the two threaded tubes are rotated, which in turn causes the adjusting screw to move horizontally, thereby adjusting the position of the baffle.

[0038] In one possible design, the cutting mechanism includes:

[0039] The mounting frame is located on one side of the base frame, on which a grid plate is fixedly embedded, and a dust collection box is welded below.

[0040] A plasma cutting and welding machine is installed on the inner wall of the bottom of the mounting frame;

[0041] A drive assembly, mounted on top of the mounting bracket, is connected to a cutting nozzle, which is connected to the plasma cutting welder;

[0042] During cutting, metal welding slag falls through the grating plate into the dust collection box, while the drive assembly drives the cutting nozzle to move, thereby cutting the metal pipe.

[0043] In one possible design, the driving component includes:

[0044] The U-shaped frame is welded to the top of the mounting frame by four mounting rods, and has a sliding groove on it;

[0045] A rectangular frame is slidably connected within the slide groove;

[0046] A movable plate is slidably connected to the rectangular frame, and a cutting nozzle is connected to its bottom via a gooseneck tube.

[0047] An electric actuator is installed on one side of the U-shaped frame, and its output shaft is threadedly connected to one side of the rectangular frame.

[0048] A stepper motor is installed on one side of the top of the U-shaped frame. A transmission screw is welded to its output shaft. A threaded plate is threaded onto the transmission screw. The threaded plate is connected to the top of the moving plate through the transmission rod and the transmission plate.

[0049] Specifically, by activating the electric push rod and the stepper motor respectively, the position of the cutting nozzle in two directions can be adjusted to perform irregular cutting on the metal tube.

[0050] In one possible design, a limiting rod and a limiting tube are also included. The limiting rod is welded to the bottom of both sides of the L-shaped frame, and the limiting tube is slidably sleeved on the limiting rod and welded to the bottom of both sides of the baffle to provide horizontal support for the baffle.

[0051] The method of using the plasma arc cutting and welding machine for the sofa production frame includes the following steps:

[0052] S1. Baffle Adjustment: Based on the size of the metal tube, pull the timing belt to drive the timing pulley and the threaded tube to rotate; through the threaded transmission between the threaded tube and the adjusting screw, drive the adjusting screw to move horizontally, thereby driving the connecting frame, connecting plate and baffle to move, so as to adjust the distance between the baffle roller and the transmission roller to match the tube diameter.

[0053] S2. Synchronous belt locking: After the baffle is adjusted to the correct position, the horizontally rotating clamping plate cooperates with the support plate to clamp the synchronous belt; the stop bar restricts the rotation of the clamping plate and fixes the position of the baffle.

[0054] S3. Metal tube feeding: Insert the metal tube between the L-shaped frame and the baffle, so that the drive roller and the stop roller contact the tube body; start the drive motor to drive the drive shaft and worm gear to rotate; the worm gear meshes with the worm wheel to drive the drive roller to rotate, driving the metal tube to move laterally to the cutting position on the mounting frame.

[0055] S4. Nozzle Pre-adjustment: Based on the condition of the metal tube, bend and adjust the gooseneck tube and keep it in position, then fine-tune the position of the cutting nozzle.

[0056] S5. Nozzle Fine Adjustment and Cutting: Start the electric push rod to move the rectangular frame horizontally; at the same time, start the stepper motor to drive the transmission screw to rotate, which drives the transmission rod and transmission plate through the threaded plate, driving the moving plate to move vertically; through the combination of vertical movement of the rectangular frame and the moving plate, the two-dimensional position fine adjustment of the cutting nozzle is achieved; operate the cutting nozzle to perform irregular cutting on the metal pipe.

[0057] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the invention.

[0058] Beneficial effects: In this invention, the power mechanism can drive the transmission shaft to rotate by starting the drive motor, which in turn drives multiple transmission components to move, thereby driving the rotating shaft to rotate. This, in turn, drives multiple transmission rollers to rotate, which in turn drives the metal tube to move. Thus, when cutting the metal tube, the position of the metal tube can be automatically adjusted, which is very convenient.

[0059] In this invention, the limiting mechanism can drive the support component to move through the driving adjustment component, thereby adjusting the lateral position of the baffle. This allows for adjustment of the distance between the baffle roller and the corresponding transmission roller. When conveying metal tubes of different sizes, the position of the baffle roller can be adjusted to achieve stable limiting of the metal tube, ensuring close contact between the metal tube and the transmission roller. This prevents slippage between the metal tube and the transmission roller during transmission.

[0060] In this invention, the cutting mechanism allows the drive mechanism to be activated after the position of the metal tube is adjusted, thereby moving the cutting nozzle and simultaneously starting the plasma cutting welder. The cutting nozzle can then be used to cut the metal tube. During the cutting of the metal tube, the metal welding slag after combustion can fall through the grid plate into the dust collection box, thus facilitating the collection of the metal welding slag.

[0061] This invention enables automatic position adjustment of the metal tubes used to make sofa frames during cutting, facilitating continuous cutting. Furthermore, the cutting nozzle is adjustable, allowing for irregular cutting of the metal tubes, thus enabling convenient and rapid cutting of sofa frames in practical use. Attached Figure Description

[0062] Figure 1 This is a first-view three-dimensional structural schematic diagram of the plasma arc cutting and welding machine for sofa production frame provided in an embodiment of the present invention.

[0063] Figure 2 This is a second-view three-dimensional structural schematic diagram of the plasma arc cutting and welding machine for sofa production frame provided in an embodiment of the present invention.

[0064] Figure 3 This is a three-dimensional schematic diagram of the L-shaped frame, multiple support frames, multiple connecting plates, and baffle connection structure of the plasma arc cutting and welding machine for sofa production frame provided in an embodiment of the present invention.

[0065] Figure 4 This is a three-dimensional schematic diagram of the mounting plate, connecting frame, multiple connecting plates and baffle connection structure of the plasma arc cutting and welding machine for sofa production frame provided in an embodiment of the present invention.

[0066] Figure 5 This is a three-dimensional schematic diagram of the connection structure of the drive motor, transmission shaft, multiple worm gears, multiple worm wheels and multiple transmission rollers of the plasma arc cutting and welding machine for sofa production frame provided in an embodiment of the present invention.

[0067] Figure 6 This is a three-dimensional schematic diagram of the mounting frame, U-shaped frame, rectangular frame and stepper motor connection structure of the plasma arc cutting and welding machine for sofa production frame provided in an embodiment of the present invention.

[0068] Figure 7 A three-dimensional schematic diagram of the mounting frame, U-shaped frame, gooseneck tube and cutting nozzle connection structure of the plasma arc cutting and welding machine for sofa production frame provided in an embodiment of the present invention;

[0069] Figure 8 This is a three-dimensional schematic diagram of the connection structure of the electric push rod, rectangular frame, stepper motor, moving plate, gooseneck tube and cutting nozzle of the plasma arc cutting and welding machine for sofa production provided in an embodiment of the present invention.

[0070] Figure label:

[0071] 1. Base frame; 2. Support box; 3. L-shaped frame; 4. Drive roller; 5. Worm gear; 6. Drive motor; 7. Drive shaft; 8. Worm; 9. Support frame; 10. U-shaped support plate; 11. Connecting plate; 12. Baffle; 121. Baffle roller; 13. Connecting frame; 14. Mounting plate; 15. Threaded pipe; 16. Adjusting screw; 17. Synchronous pulley; 18. Synchronous belt; 19. Support plate; 20. Clamping plate; 21. Stop bar; 22. 23. Handle; 24. Limiting tube; 25. Limiting rod; 26. Mounting bracket; 27. Plasma cutting and welding machine; 28. Dust collection box; 29. ​​Grating plate; 30. Mounting rod; 31. U-shaped frame; 32. Slide groove; 33. Rectangular frame; 34. Moving plate; 35. Gooseneck tube; 36. Cutting nozzle; 37. Electric push rod; 38. Stepper motor; 39. Transmission screw; 40. Threaded plate; 41. Transmission rod; 42. Transmission plate. Detailed Implementation

[0072] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0073] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the devices are connected to each other and their relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of the present invention, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0074] Example 1: Refer to Figure 1-8 A cutting and welding machine includes a base frame 1, with a support box 2 fixed to the top of the base frame 1 by welding. An L-shaped frame 3 is also fixed to the top of the support box 2 by welding. Multiple rotating shafts are equally spaced and rotatably connected through the L-shaped frame 3. A transmission roller 4 is welded to the top of the rotating shaft, and the bottom of the rotating shaft extends into the support box 2.

[0075] like Figure 5As shown, the cutting and welding machine also includes a power mechanism, which is bolted to one side of the support box 2. One side of the power mechanism extends into the support box 2 and connects to the inner wall of one side of the support box 2. The power mechanism is connected to multiple rotating shafts. Specifically, the power mechanism includes a drive motor 6, which is bolted to one side of the support box 2. The output shaft of the drive motor 6 extends into the support box 2 and is welded to a transmission shaft 7. One end of the transmission shaft 7 is rotatably connected to the inner wall of one side of the support box 2. Multiple transmission components are installed at equal intervals on the transmission shaft 7, and each transmission component is connected to a corresponding rotating shaft. The transmission components include a worm gear 5 and a worm 8. The worm gear 5 is fixedly mounted on the corresponding rotating shaft via a key connection, and the worm 8 is fixedly mounted on the transmission shaft 7 via a key connection. The worm 8 meshes with the worm gear 5. Starting the drive motor 6 drives the transmission shaft 7 to rotate, which in turn drives the multiple worms 8 to rotate. Under the meshing transmission action with the corresponding worm gear 5, the corresponding rotating shaft rotates, thereby driving the corresponding transmission roller 4 to rotate stably and driving the metal tube to move and adjust.

[0076] like Figure 1-4As shown, a limiting mechanism is also installed on the L-shaped frame 3. This limiting mechanism is used to limit the metal tube, ensuring close contact between the metal tube and multiple transmission rollers 4. The limiting mechanism includes a baffle 12 located on the horizontal side of the L-shaped frame 3. Multiple mounting holes are evenly spaced on the baffle 12, through which a guide roller 121 passes and is rotatably connected. The guide roller 121 is used to block and limit the metal tube. Multiple support components are evenly spaced on one side of the baffle 12, and one side of each support component is connected to the top of one side of the L-shaped frame 3. Each support component includes a connecting plate 11 welded to the top of one side of the baffle 12, and a support frame 9 welded to the top of one side of the L-shaped frame 3. A U-shaped support plate 10 is welded to the bottom side of the support frame 9, and the connecting plate 11 passes through the U-shaped support plate 10 and is slidably connected to the inner side of the U-shaped support plate 10. The same adjusting component is connected to the multiple support components, and this adjusting component is connected to the top of the L-shaped frame 3. The adjustment assembly includes a mounting plate 14 welded to the top of the L-shaped frame 3. Threaded tubes 15 are symmetrically threaded through and rotatably connected to the mounting plate 14. Adjusting screws 16 are threaded through and connected to the threaded tubes 15. One end of each of the two adjusting screws 16 is welded to a common connecting frame 13. Multiple support frames 9 pass through the bottom of the connecting frame 13 and are welded to the tops of multiple connecting plates 11. Synchronous pulleys 17 are fixedly mounted on the threaded tubes 15 by welding. Two synchronous pulleys 17 are driven by the same synchronous belt 18. A support plate 19, located below the synchronous belt 18, is welded to one side of the mounting plate 14. A clamping plate 20 (with added rubber teeth on the contact surface) is rotatably connected to the top side of the support plate 19. The clamping plate 20 is located above the synchronous belt 18 and cooperates with the support plate 19 to clamp and position the synchronous belt 18. A stop strip 21 is adhered to one side of the mounting plate 14, and the stop strip 21 contacts one side of the clamping plate 20 to brake and limit the clamping plate 20. A handle 22 is adhered to the top of the clamping plate 20. By pulling the synchronous belt 18, the synchronous belt 18 moves. At this time, under the transmission action with the two synchronous pulleys 17, it can drive the two threaded tubes 15 to rotate. When the threaded tubes 15 rotate, under the thread transmission action with the corresponding adjusting screws 16, they can drive the adjusting screws 16 to move horizontally. This can drive the connecting frame 13 to move, thereby driving multiple connecting plates 11 to move, thus adjusting the position of the baffle 12. This allows the position of the baffle roller 121 to be adjusted according to the size and width of the metal tube. After adjustment, the clamping plate 20 can be rotated horizontally. The cooperation between the clamping plate 20 and the support plate 19 can position the synchronous belt 18, thereby limiting the lateral position of the baffle 12. Limiting rods 24 are welded to the bottom of both sides of the L-shaped frame 3. Limiting tubes 23 are slidably sleeved on the limiting rods 24. The two limiting tubes 23 are welded to the bottom of both sides of the baffle 12 respectively. By utilizing the sliding cooperation between the limiting tubes 23 and the limiting rods 24, the baffle 12 can be horizontally supported, so that the baffle 12 will not fall downwards.

[0077] This application can be used in the field of sofa manufacturing technology, or in other fields applicable to this application.

[0078] Example 2: Reference Figure 6-8An improvement upon Embodiment 1: A plasma arc cutting and welding machine for sofa manufacturing frames, applied to the field of sofa manufacturing technology, includes a cutting mechanism on one side of the base frame 1. The cutting mechanism comprises a plasma cutting welder 26 and a drive assembly. A cutting nozzle 35 is connected to the drive assembly and is connected to the plasma cutting welder 26. The cutting mechanism includes a mounting frame 25 located on one side of the base frame 1. A grid plate 28 is fixedly embedded in the mounting frame 25, allowing the burned metal slag to fall downwards through the grid plate 28 during metal pipe cutting. A dust collection box 27, located below the grid plate 28, is also welded to the mounting frame 25 to collect the metal slag. The plasma cutting welder 26 is mounted on the bottom inner wall of the mounting frame 25, and the drive assembly is mounted on the top of the mounting frame 25. The drive assembly includes four mounting rods 29 symmetrically welded to the top of the mounting bracket 25. A U-shaped frame 30 is welded to the top of each of the four mounting rods 29. The U-shaped frame 30 has a groove 31, within which a rectangular frame 32 is slidably connected. A movable plate 33 extends through and is slidably connected to the rectangular frame 32. A gooseneck tube 34 is fixedly mounted to the bottom of the movable plate 33 by adhesive bonding. The bottom end of the gooseneck tube 34 is bolted to the cutting nozzle 35. An electric push rod 36 is bolted to one side of the U-shaped frame 30. The output shaft of the electric push rod 36 extends into the U-shaped frame 30 and is threaded to one side of the rectangular frame 32. A stepper motor 37 is fixedly installed on one side of the top of the U-shaped frame 30 by bolts to the plate. A transmission screw 38 is welded to the output shaft of the stepper motor 37. A fixed plate is rotatably sleeved on the transmission screw 38. The fixed plate is welded to the top of the U-shaped frame 30. A threaded plate 39 is threaded on the transmission screw 38. A transmission rod 40 is welded to one side of the threaded plate 39. A transmission plate 41 is slidably sleeved on the transmission rod 40. The transmission plate 41 is welded to the top of the movable plate 33. By activating the electric push rod 36 and the stepper motor 37 respectively, the electric push rod 36 can move the horizontal position of the rectangular frame 32 when it is running, and the stepper motor 37 can drive the transmission screw 38 to rotate. At this time, under the threaded transmission action with the threaded plate 39, the threaded plate 39 can be moved. When the threaded plate 39 moves, it can drive the moving plate 33 to move through the transmission cooperation of the transmission rod 40 and the transmission plate 41. This allows for adjustment of the position of the cutting nozzle 35. The direction of movement of the threaded plate 39 is perpendicular to the direction of movement of the rectangular frame 32, so the adjustment of the cutting nozzle 35 can be planar. This allows for easy cutting of metal pipes by adjusting the position of the cutting nozzle 35 in two directions. At the same time, the gooseneck tube 34 itself can be bent and adjusted, thereby allowing for fine adjustment of the position of the cutting nozzle 35, so as to adjust the cutting nozzle 35 according to the actual situation of the metal pipe.

[0079] This invention proposes a method for using a plasma arc cutting and welding machine for sofa manufacturing frames, comprising the following steps:

[0080] S1. First, adjust the position of the baffle 12 according to the size of the metal tube to be cut. That is, by pulling the synchronous belt 18, the synchronous belt 18 moves. At this time, under the transmission action of the two synchronous pulleys 17, the two threaded tubes 15 can be driven to rotate. When the threaded tubes 15 rotate, under the thread transmission action of the corresponding adjusting screw 16, the adjusting screw 16 can be driven to move horizontally. At this time, the connecting frame 13 can be driven to move, thereby driving multiple connecting plates 11 to move, thereby adjusting the position of the baffle 12. Thus, the position of the guide roller 121 can be adjusted according to the size and width of the metal tube, so that the distance between the guide roller 121 and the corresponding transmission roller 4 matches the size of the metal tube to be cut.

[0081] S2. After the position of the guide roller 121 is adjusted, the clamping plate 20 can be rotated horizontally. The clamping plate 20 and the support plate 19 can be used to position the synchronous belt 18, thereby limiting the lateral position of the guide plate 12. At this time, the stop bar 21 can form a blocking limit on the clamping plate 20, thereby enabling the clamping plate 20 to stably clamp and position the synchronous belt 18.

[0082] S3. Insert the metal tube between the L-shaped frame 3 and the baffle 12 on the side away from the mounting frame 25, and make the transmission roller 4 and the baffle roller 121 in close contact with the metal tube. At the same time, start the drive motor 6 to drive the transmission shaft 7 to rotate. When the transmission shaft 7 rotates, it can drive multiple worm gears 8 to rotate. At this time, under the meshing transmission action with the corresponding worm wheel 5, it drives the corresponding rotating shaft to rotate, thereby driving the corresponding transmission roller 4 to rotate stably. This can drive the metal tube to move laterally and move the metal tube onto the mounting frame 25.

[0083] S4. After the position of the metal tube is adjusted, the position of the gooseneck tube 34 is bent and adjusted in advance. The gooseneck tube 34 can be bent and adjusted by itself, and can maintain its position after bending and adjustment, so as to fine-tune the position of the cutting nozzle 35, so as to adjust the cutting nozzle 35 according to the actual situation of the metal tube.

[0084] S5. By activating the electric push rod 36 and the stepper motor 37 respectively, the electric push rod 36 can move the horizontal position of the rectangular frame 32 when it is running, and the stepper motor 37 can drive the transmission screw 38 to rotate when it is running. At this time, under the threaded transmission action with the threaded plate 39, the threaded plate 39 can be moved. When the threaded plate 39 moves, it can drive the moving plate 33 to move through the transmission cooperation of the transmission rod 40 and the transmission plate 41. This allows the position of the cutting nozzle 35 to be adjusted. The moving direction of the threaded plate 39 is perpendicular to the moving direction of the rectangular frame 32. Therefore, when adjusting the cutting nozzle 35, it can be adjusted in a planar manner. This allows for convenient irregular cutting of metal pipes by adjusting the position of the cutting nozzle 35 in two directions.

[0085] However, as is well known to those skilled in the art, the working principles and wiring methods of the drive motor 6, plasma cutting welder 26, electric push rod 36 and stepper motor 37 are commonplace and are all conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0086] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0087] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. In the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A plasma arc cutting and welding machine for sofa manufacturing frames, characterized in that, include: The base frame (1) has a support box (2) welded to its top. L-shaped frame (3) is welded to the top of the support box (2). Multiple rotating shafts are rotatably connected at equal intervals on the L-shaped frame (3). A transmission roller (4) is welded to the top of the rotating shaft, and the bottom of the rotating shaft extends into the support box (2). The power mechanism is installed on one side of the support box (2) and extends into its interior. It is connected to the inner wall of one side of the support box (2) and is connected to multiple rotating shafts respectively. It is used to drive the multiple rotating shafts to rotate, thereby driving the metal tube to move. The limiting mechanism is installed on the L-shaped frame (3) to limit the metal tube so that the metal tube is in close contact with the multiple transmission rollers (4); The cutting mechanism is located on one side of the base frame (1) and includes a plasma cutting welding machine (26) and a drive assembly. A cutting nozzle (35) is connected to the drive assembly and is connected to the plasma cutting welding machine (26) for cutting metal pipes. The power mechanism drives the transmission roller (4) to rotate to move the metal tube, the limiting mechanism ensures stable transmission of the metal tube, and the cutting mechanism cuts the metal tube. The limiting mechanism includes: A baffle (12) is set on the horizontal side of the L-shaped frame (3), and multiple mounting holes are opened at equal intervals on it. A baffle roller (121) is rotatably connected in the mounting hole to block the limiting metal tube and make it in close contact with the transmission roller (4). Multiple support components are installed at equal intervals on one side of the baffle (12) and connected to the top of one side of the L-shaped frame (3); An adjustment component is connected to multiple support components and to the top of the L-shaped frame (3) for adjusting the lateral position of the baffle (12) to accommodate metal tubes of different sizes; The support assembly includes: a connecting plate (11), welded to the top of one side of the baffle (12); and a support frame (9), welded to the top of one side of the L-shaped frame (3), with a U-shaped support plate (10) welded to one side of its bottom. The connecting plate (11) passes through the U-shaped support plate (10) and is slidably connected to its inner side. The adjusting component passes through the support frame (9) and is connected to the top of the connecting plate (11) to realize the horizontal sliding support and lateral position adjustment of the baffle (12). The adjustment assembly includes: a mounting plate (14), welded to the top of the L-shaped frame (3), on which threaded tubes (15) are symmetrically rotatably connected; an adjustment screw (16), threadedly connected to the threaded tube (15); a connecting frame (13), welded to one end of the two adjustment screws (16), and respectively welded to the top of the multiple connecting plates (11) through multiple support frames (9); and a synchronous pulley (17), fixedly mounted on the threaded tube (15), with the two synchronous pulleys (17) connected by a synchronous belt (18). Support plate (19) is welded to one side of mounting plate (14). A clamping plate (20) is rotatably connected to the top side of support plate (19) via a pin. The clamping plate (20) is located above the synchronous belt (18). The clamping plate (20) cooperates with support plate (19) to clamp and position the synchronous belt (18). A stop strip (21) is glued to one side of mounting plate (14). The stop strip (21) contacts one side of clamping plate (20) to brake and limit clamping plate (20). A handle (22) is glued to the top of clamping plate (20). In this process, by pulling the synchronous belt (18), the two threaded tubes (15) are rotated, which in turn drives the adjusting screw (16) to move horizontally, thereby adjusting the position of the baffle (12).

2. The plasma arc cutting and welding machine for sofa production frames according to claim 1, characterized in that, The power mechanism includes: The drive motor (6) is fixedly installed on one side of the support box (2) by bolts. Its output shaft extends into the support box (2) and is welded with a transmission shaft (7). One end of the transmission shaft (7) is rotatably connected to the inner wall of one side of the support box (2). Multiple transmission components are installed at equal intervals on the transmission shaft (7), and each transmission component is connected to the corresponding rotating shaft; The drive motor (6) is started to drive the transmission shaft (7) to rotate, thereby driving multiple transmission components to move, driving the rotating shaft and the transmission roller (4) to rotate, and realizing the automatic movement of the metal tube.

3. The plasma arc cutting and welding machine for sofa production frames according to claim 2, characterized in that, The transmission assembly includes: a worm gear (5), which is fixedly mounted on the corresponding rotating shaft by a key connection; and a worm (8), which is fixedly mounted on the transmission shaft (7) by a key connection and meshes with the worm gear (5); When the worm (8) rotates with the transmission shaft (7), it drives the rotating shaft and the transmission roller (4) to rotate stably through meshing with the worm wheel (5).

4. The plasma arc cutting and welding machine for sofa production frames according to claim 3, characterized in that, The cutting mechanism includes: a mounting frame (25) located on one side of the base frame (1), on which a grid plate (28) is fixedly embedded and a dust collection box (27) is welded below; a plasma cutting welding machine (26) installed on the inner wall of the bottom of the mounting frame (25); and a drive assembly installed on the top of the mounting frame (25) and connected to a cutting nozzle (35), wherein the cutting nozzle (35) is connected to the plasma cutting welding machine (26). During cutting, metal welding slag falls through the grid plate (28) into the dust collection box (27), while the drive assembly drives the cutting nozzle (35) to move, thereby cutting the metal pipe.

5. The plasma arc cutting and welding machine for sofa production frames according to claim 4, characterized in that, The drive assembly includes: a U-shaped frame (30), which is welded to the top of the mounting frame (25) via four mounting rods (29) and has a sliding groove (31); a rectangular frame (32), which is slidably connected in the sliding groove (31); a moving plate (33), which is slidably connected through the rectangular frame (32) and has a cutting nozzle (35) connected to its bottom via a gooseneck tube (34); an electric push rod (36), which is installed on one side of the U-shaped frame (30) and has its output shaft threadedly connected to one side of the rectangular frame (32); a stepper motor (37), which is installed on the top side of the U-shaped frame (30) and has a transmission screw (38) welded to its output shaft. A threaded plate (39) is threadedly fitted on the transmission screw (38) and the threaded plate (39) is connected to the top of the moving plate (33) via a transmission rod (40) and a transmission plate (41). The electric push rod (36) and the stepper motor (37) are activated respectively to adjust the position of the cutting nozzle (35) in two directions so as to perform irregular cutting on the metal tube.

6. The plasma arc cutting and welding machine for sofa production frames according to claim 5, characterized in that, It also includes a limiting rod (24) and a limiting tube (23). The limiting rod (24) is welded to the bottom of both sides of the L-shaped frame (3). The limiting tube (23) is slidably sleeved on the limiting rod (24) and welded to the bottom of both sides of the baffle (12) for horizontal support of the baffle (12).

7. The method of using the plasma arc cutting and welding machine for sofa production frames according to claim 6, characterized in that, Includes the following steps: S1. Baffle adjustment: According to the size of the metal tube, pull the synchronous belt (18) to drive the synchronous pulley (17) and the threaded tube (15) to rotate; through the threaded transmission between the threaded tube (15) and the adjusting screw (16), drive the adjusting screw (16) to move horizontally, thereby driving the connecting frame (13), connecting plate (11) and baffle (12) to move, so as to adjust the distance between the baffle roller (121) and the transmission roller (4) to match the tube diameter; S2, Synchronous Belt Locking: After the baffle (12) is adjusted to the correct position, the horizontally rotated clamp (20) cooperates with the support plate (19) to clamp the synchronous belt (18); the stop bar (21) restricts the rotation of the clamp (20) and fixes the position of the baffle (12); S3, Metal tube feeding: Insert the metal tube between the L-shaped frame (3) and the baffle (12) so that the transmission roller (4) and the baffle roller (121) contact the tube body; start the drive motor (6) to drive the transmission shaft (7) and the worm (8) to rotate; the worm (8) meshes with the worm wheel (5) to drive the transmission roller (4) to rotate, and drive the metal tube to move laterally to the cutting position on the mounting frame (25); S4. Nozzle pre-adjustment: Based on the condition of the metal tube, bend and adjust the gooseneck tube (34) and keep it in position, and fine-tune the position of the cutting nozzle (35). S5. Nozzle fine adjustment and cutting: Start the electric push rod (36) to move the rectangular frame (32) horizontally; at the same time, start the stepper motor (37) to drive the transmission screw (38) to rotate, and drive the transmission rod (40) and transmission plate (41) through the threaded plate (39) to drive the moving plate (33) to move vertically; through the combination of vertical movement of the rectangular frame (32) and the moving plate (33), the two-dimensional position fine adjustment of the cutting nozzle (35) is realized; operate the cutting nozzle (35) to perform irregular cutting on the metal pipe.

Images