Numerical control cutting and welding machine

Abstract

The invention relates to the technical field of cutting and welding machines, and discloses a numerical control cutting and welding machine which is characterized in that a bearing table is fixedly connected to the top of a supporting column, a first air cylinder is fixedly connected to the outer side of the bearing table, a sliding strip is fixedly connected to the inner side of the first air cylinder, and an adjusting limiting mechanism is arranged at the top of the sliding strip; a clamping mechanism is arranged at the bottom of the adjusting and limiting mechanism, a welding mechanism is arranged at the back end of the top of the bearing table, the adjusting and limiting mechanism comprises an adjusting assembly and a limiting assembly, the adjusting assembly is arranged at the top of the sliding strip, and the limiting assembly is arranged at the bottom of the adjusting assembly. Through the cooperation of the sliding plate on the arc-shaped rod, the U-shaped plate and the adjusting plate, the position can be flexibly adjusted within a certain radian range, the cutting and welding work can be rapidly and accurately adjusted to the proper machining angle and position according to the shapes of different workpieces, the universality and adaptability of equipment are greatly improved, and diversified machining requirements can be met.

Description

Technical Field

[0001] The invention relates to the technical field of cutting and welding machines, in particular to a numerically controlled cutting and welding machine. Background Art

[0002] CNC cutting and welding machine is an automated equipment that combines CNC system with cutting and welding equipment. It can achieve high-precision and high-efficiency cutting and welding operations. It is widely used in various metal processing fields and can efficiently and accurately complete the cutting and welding tasks of metal materials.

[0003] A numerically controlled welding machine with publication number CN 112171032 A can adjust the height of an adjustable support plate and facilitate the movement of the welding machine and the support plate, thereby improving the convenience of the device while improving the welding effect. At the same time, the welding material can be clamped and fixed according to the fixed angle of the welding material, thereby improving the stability during the welding process, ensuring the welding effect and the accuracy of the welding, and thus reducing the production cost.

[0004] The CNC welding machine can adjust the height of the support plate and facilitate the movement of the welding machine and the support plate, thereby improving the convenience of the device while improving the welding effect. However, the clamping plate provided on the device cannot clamp irregular plates, so that the position of irregular plates is easily changed during welding, which affects the welding effect. Therefore, improvement is needed. Summary of the invention

[0005] The object of the present invention is to provide a numerically controlled cutting and welding machine to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a CNC cutting and welding machine, comprising a support column, a load-bearing platform is fixedly connected to the top of the support column, a first cylinder is fixedly connected to the outside of the load-bearing platform, a slide bar is fixedly connected to the inside of the first cylinder, an adjustment limit mechanism is arranged on the top of the slide bar, a clamping mechanism is arranged on the bottom of the adjustment limit mechanism, and a welding mechanism is arranged on the back end of the top of the load-bearing platform; The adjustment and limiting mechanism comprises an adjustment component and a limiting component, wherein the adjustment component is arranged at the top of the slide bar, and the limiting component is arranged at the bottom of the adjustment component; The adjusting assembly includes a hollow frame, which is fixedly connected to the top of the slide bar, a servo motor is fixedly connected to the front of the hollow frame, a worm is fixedly connected to the outside of the servo motor, a worm wheel is meshed on the top of the worm, a rotating plate is fixedly connected to the back end of the worm wheel, the rotating plate is rotatably connected to the inner side of the hollow frame, an arc plate is fixedly connected to the top of the rotating plate, an arc rod is fixedly connected to the inner side of the arc plate, a first spring is sleeved on the outer periphery of the arc rod, a sliding plate is slidably connected to the outer periphery of the arc rod, a U-shaped plate is fixedly connected to the inner side of the sliding plate, and an adjusting plate is rotatably connected to the inner side of the U-shaped plate.

[0007] According to the above technical solution, a sliding groove corresponding to the movement trajectory of the slide bar is opened on the inner side of the load-bearing platform, and the slide bar is slidably connected to the inside of the sliding groove. Through the opened sliding groove, the slide bar can slide on the inside of the load-bearing platform. The set slide bar can support the hollow frame, so that the hollow frame can slide on the top of the load-bearing platform.

[0008] According to the above technical solution, the outer side of the first spring is fixedly connected to the inner side of the arc plate, and the inner side of the first spring is fixedly connected to the outer side of the sliding plate. When the insertion rod does not limit the sliding plate, the sliding plate can return to its original position through the elastic force of the first spring.

[0009] The top of the rotating shaft is fixedly connected to the second motor, and the second motor is fixedly connected to the bottom of the rotating shaft.

[0010] According to the above technical solution, the outer side of the second spring is fixedly connected to the inner side of the arc-shaped slide plate, and the inner side of the second spring is fixedly connected to the inner side of the hollow plate. Through the elastic force of the second spring, the arc-shaped slide plate can drive the insertion rod to be inserted into the load-bearing plate to limit the sliding plate.

[0011] According to the above technical solution, a circular hole corresponding to the position of the insertion rod is opened on the inner side of the load-bearing plate, and the insertion rod is inserted into the inner side of the circular hole. Through the opened circular hole, the insertion rod can be inserted into the load-bearing plate to limit the sliding plate.

[0012] According to the above technical solution, the clamping mechanism includes a first motor, which is fixedly connected to the top of the load-bearing plate, a rotating shaft is fixedly connected to the bottom of the first motor, a gear is fixedly connected to the bottom of the rotating shaft, a rack is meshed on the outer side of the gear, a rotating frame is fixedly connected to the inner side of the rack, a limiting block is fixedly connected to the top of the rotating frame, a rectangular plate is fixedly connected to the bottom inner side of the rotating frame, a third cylinder is fixedly connected to the right side of the rectangular plate, a trapezoidal plate is fixedly connected to the left side of the third cylinder, a linkage block is slidably connected to the inner side of the trapezoidal plate, a slider is fixedly connected to the outer side of the linkage block, and an arc-shaped clamping plate is fixedly connected to the bottom of the slider.

[0013] According to the above technical solution, a circular groove corresponding to the movement trajectory of the limit block is opened on the inner side of the load-bearing plate, and the limit block is slidably connected to the inside of the circular groove. Through the opened circular groove, the limit block can slide on the inside of the load-bearing plate, making the rotating frame more stable during the rotation process.

[0014] According to the above technical solution, the welding mechanism includes a support frame, which is fixedly connected to the back end of the top of the load-bearing platform, a vertical plate is fixedly connected to the top of the support frame, a fourth cylinder is fixedly connected to the front of the vertical plate, a fixed plate is fixedly connected to the back end of the fourth cylinder, a moving bar is fixedly connected to the top of the front of the fixed plate, a fifth cylinder is fixedly connected to the top of the moving bar, a connecting plate is fixedly connected to the bottom of the fifth cylinder, and a cutting welder is fixedly connected to the bottom of the connecting plate.

[0015] According to the above technical solution, a limiting groove corresponding to the movement trajectory of the moving bar is opened on the inner side of the support frame, and the moving bar is slidably connected to the inside of the limiting groove. The moving bar can be limited by the opened limiting groove, so that the moving bar can slide more stably inside the support frame.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. This CNC cutting and welding machine drives the worm to rotate through a servo motor, which in turn drives the worm wheel and the rotating plate to rotate, so that the arc plate and related components rotate accordingly. Through the cooperation of the sliding plate on the arc rod with the U-shaped plate and the adjusting plate, the position can be flexibly adjusted within a certain arc range, so that the cutting and welding work can be quickly and accurately adjusted to the appropriate processing angle and position according to the shape and processing requirements of different workpieces, which greatly improves the versatility and adaptability of the equipment and can meet diverse processing needs.

[0017] 2. The CNC cutting and welding machine uses a limit rod in conjunction with a second spring so that the arc-shaped slide plate can drive the insertion rod to move under the action of the second spring, so that the insertion rod can be accurately inserted into the circular hole on the inner side of the load-bearing plate, and the U-shaped plate is limited, so that the device can clamp the block workpiece more stably.

[0018] 3. The CNC cutting and welding machine cooperates with an arc-shaped clamping plate, a rotating frame, a limit block, a slider, a rack, a first motor, a gear, a linkage block, a rectangular plate, a third cylinder, a trapezoidal plate and a rotating shaft to enable the slider to drive the arc-shaped clamping plate to move, so that the arc-shaped clamping plate can clamp the cylindrical workpiece, and the rotating shaft is driven to rotate by the first motor, so that the rotating shaft drives the rack to move through the gear, and the rack can drive the cylindrical workpiece to rotate through the rotating frame, so that the workpiece can be conveniently welded.

[0019] 4. The CNC cutting and welding machine uses the fourth cylinder to push the fixed plate and the moving bar to slide in the limit groove on the inner side of the support frame to achieve lateral movement; the fifth cylinder drives the connecting plate and the cutting and welding device to move up and down, so that the cutting and welding device can flexibly adjust its position within a larger range, and can quickly and accurately reach the processing position, thereby improving the cutting and welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a three-dimensional diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the structure of the adjustment limit mechanism; Figure 3 It is a schematic diagram of the structure of the adjustment component; Figure 4 It is a schematic diagram of the structure of the sliding plate, the first spring and the arc-shaped rod; Figure 5 It is a schematic diagram of the structure of the limit component; Figure 6 It is a schematic diagram of the structure of the plug rod, the arc-shaped slide plate, the limit rod and the second spring; Figure 7 It is a schematic diagram of the clamping mechanism structure; Figure 8 It is a schematic diagram of the structure of a rectangular plate, a third cylinder and a trapezoidal plate; Fig. 9 is a schematic diagram of the rotating shaft structure; Fig.10 This is a schematic diagram of the welding mechanism structure.

[0021] In the figure: 1, support column; 2, load-bearing platform; 3, first cylinder; 4, adjustment limit mechanism; 41, adjustment assembly; 411, hollow frame; 412, servo motor; 413, worm; 414, worm wheel; 415, U-shaped plate; 416, adjustment plate; 417, arc plate; 418, rotating plate; 419, sliding plate; 4191, first spring; 4192, arc rod; 42, limit assembly; 421, second cylinder; 422, support plate; 423, pull plate; 424, linkage plate; 425, connecting rod; 426, hollow plate; 427, moving plate; 428, plug rod; 429, arc slide plate; 4291, limit rod; 4 292, second spring; 4293, second motor; 4294, rotating shaft; 4295, connecting frame; 4296, load-bearing rotating plate; 4297, load-bearing plate; 5, welding mechanism; 51, supporting frame; 52, moving bar; 53, fixing plate; 54, vertical plate; 55, fourth cylinder; 56, fifth cylinder; 57, connecting plate; 58, cutting welder; 6, sliding bar; 7, clamping mechanism; 71, arc clamping plate; 72, rotating frame; 73, limiting block; 74, sliding block; 75, rack; 76, first motor; 77, gear; 78, linkage block; 79, rectangular plate; 701, third cylinder; 702, trapezoidal plate; 703, rotating shaft. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The present invention provides the following technical solutions: Embodiment 1

[0024] Combination Figure 1-10 A CNC cutting and welding machine comprises a support column 1, a load-bearing platform 2 is fixedly connected to the top of the support column 1, a first cylinder 3 is fixedly connected to the outer side of the load-bearing platform 2, a slide bar 6 is fixedly connected to the inner side of the first cylinder 3, an adjustment limit mechanism 4 is arranged on the top of the slide bar 6, a clamping mechanism 7 is arranged on the bottom of the adjustment limit mechanism 4, and a welding mechanism 5 is arranged on the back end of the top of the load-bearing platform 2; The adjustment and limiting mechanism 4 includes an adjustment component 41 and a limiting component 42. The adjustment component 41 is arranged at the top of the slide bar 6, and the limiting component 42 is arranged at the bottom of the adjustment component 41. The adjusting component 41 includes a hollow frame 411, which is fixedly connected to the top of the slide bar 6. A servo motor 412 is fixedly connected to the front of the hollow frame 411, a worm 413 is fixedly connected to the outside of the servo motor 412, a worm 413 is meshed with a worm wheel 414 at the top of the worm 413, a rotating plate 418 is fixedly connected to the back end of the worm wheel 414, the rotating plate 418 is rotatably connected to the inner side of the hollow frame 411, an arc plate 417 is fixedly connected to the top of the rotating plate 418, an arc rod 4192 is fixedly connected to the inner side of the arc plate 417, a first spring 4191 is sleeved on the outer periphery of the arc rod 4192, a sliding plate 419 is slidably connected to the outer periphery of the arc rod 4192, a U-shaped plate 415 is fixedly connected to the inner side of the sliding plate 419, and an adjusting plate 416 is rotatably connected to the inner side of the U-shaped plate 415.

[0025] Furthermore, a slide groove corresponding to the movement trajectory of the slide bar 6 is opened on the inner side of the load-bearing platform 2, and the slide bar 6 is slidably connected to the inside of the slide groove. Through the opened slide groove, the slide bar 6 can slide on the inner side of the load-bearing platform 2. The set slide bar 6 can support the hollow frame 411, so that the hollow frame 411 can slide on the top of the load-bearing platform 2.

[0026] Furthermore, the outer side of the first spring 4191 is fixedly connected to the inner side of the arc plate 417, and the inner side of the first spring 4191 is fixedly connected to the outer side of the sliding plate 419. When the insertion rod 428 does not limit the sliding plate 419, the sliding plate 419 can return to its original position through the elastic force of the first spring 4191. Embodiment 2

[0027] See also Figure 1-10 On the basis of the first embodiment, the limiting assembly 42 further comprises a load-bearing plate 4297, the load-bearing plate 4297 is fixedly connected to the bottom of the rotating plate 418, a connecting frame 4295 is fixedly connected to the right side of the bottom of the load-bearing plate 4297, a rotating shaft 4294 is rotatably connected to the top of the connecting frame 4295, a second motor 4293 is fixedly connected to the top of the rotating shaft 4294, the second motor 4293 is fixedly connected to the bottom of the load-bearing plate 4297, a load-bearing rotating plate 4296 is fixedly connected to the outer periphery of the rotating shaft 4294, a support plate 422 is fixedly connected to the top of the load-bearing rotating plate 4296, and the support plate 422 is fixedly connected to the right side of the support plate 422. The side is fixedly connected to the second cylinder 421, the left side of the second cylinder 421 is fixedly connected to a linkage plate 424, the left side of the linkage plate 424 is fixedly connected to a pull plate 423, the bottom of the sliding plate 419 is fixedly connected to a connecting rod 425, the bottom of the connecting rod 425 is fixedly connected to a hollow plate 426, the inner side of the hollow plate 426 is fixedly connected to a limiting rod 4291, the outer periphery of the limiting rod 4291 is slidably connected to an arc-shaped slide plate 429, the outer periphery of the limiting rod 4291 is sleeved with a second spring 4292, the outer side of the arc-shaped slide plate 429 is fixedly connected to an insertion rod 428, and the bottom of the arc-shaped slide plate 429 is fixedly connected to a moving plate 427.

[0028] Furthermore, the outer side of the second spring 4292 is fixedly connected to the inner side of the arc-shaped slide plate 429, and the inner side of the second spring 4292 is fixedly connected to the inner side of the hollow plate 426. Through the elastic force of the second spring 4292, the arc-shaped slide plate 429 can drive the insertion rod 428 to be inserted into the load-bearing plate 4297 to limit the sliding plate 419.

[0029] Furthermore, a circular hole corresponding to the position of the insertion rod 428 is opened on the inner side of the load-bearing plate 4297, and the insertion rod 428 is inserted into the inner side of the circular hole. Through the opened circular hole, the insertion rod 428 can be inserted into the interior of the load-bearing plate 4297 to limit the sliding plate 419. Embodiment 3

[0030] See also Figure 1-10 , and on the basis of Example 1, the clamping mechanism 7 further comprises a first motor 76, the first motor 76 is fixedly connected to the top of the load-bearing plate 4297, the bottom of the first motor 76 is fixedly connected to a rotating shaft 703, the bottom of the rotating shaft 703 is fixedly connected to a gear 77, the outer side of the gear 77 is meshed with a rack 75, the inner side of the rack 75 is fixedly connected to a rotating frame 72, the top of the rotating frame 72 is fixedly connected to a limiting block 73, the inner bottom of the rotating frame 72 is fixedly connected to a rectangular plate 79, the right side of the rectangular plate 79 is fixedly connected to a third cylinder 701, the left side of the third cylinder 701 is fixedly connected to a trapezoidal plate 702, the inner side of the trapezoidal plate 702 is slidably connected to a linkage block 78, the outer side of the linkage block 78 is fixedly connected to a slider 74, and the bottom of the slider 74 is fixedly connected to an arc-shaped clamping plate 71.

[0031] Furthermore, a circular groove corresponding to the movement trajectory of the limit block 73 is opened on the inner side of the load-bearing plate 4297, and the limit block 73 is slidably connected to the inside of the circular groove. Through the opened circular groove, the limit block 73 can slide on the inner side of the load-bearing plate 4297, so that the rotating frame 72 is more stable during the rotation process. Embodiment 4

[0032] See also Figure 1-10 On the basis of the first embodiment, the welding mechanism 5 is further obtained, which includes a support frame 51, the support frame 51 is fixedly connected to the back end of the top of the load-bearing platform 2, a vertical plate 54 is fixedly connected to the top of the support frame 51, a fourth cylinder 55 is fixedly connected to the front of the vertical plate 54, a fixed plate 53 is fixedly connected to the back end of the fourth cylinder 55, a moving bar 52 is fixedly connected to the top of the front of the fixed plate 53, a fifth cylinder 56 is fixedly connected to the top of the moving bar 52, a connecting plate 57 is fixedly connected to the bottom of the fifth cylinder 56, and a cutting welder 58 is fixedly connected to the bottom of the connecting plate 57.

[0033] Furthermore, a limiting groove corresponding to the movement trajectory of the moving bar 52 is opened on the inner side of the support frame 51, and the moving bar 52 is slidably connected to the inside of the limiting groove. The moving bar 52 can be limited by the opened limiting groove, so that the moving bar 52 can slide more stably inside the support frame 51.

[0034] In actual operation, when the device is used, when it is necessary to weld an irregularly shaped plate, the plate is placed on the top of the rotating plate 418, the second motor 4293 is turned on, and the second motor 4293 drives the load-bearing rotating plate 4296 to rotate through the rotating shaft 4294, and the load-bearing rotating plate 4296 drives the second cylinder 421 to rotate through the supporting plate 422, and the second cylinder 421 drives the pulling plate 423 to move through the linkage plate 424. When the linkage plate 424 moves, it can push the hollow plate 427 through the moving plate 427. The plate 426 enables the hollow plate 426 to drive the sliding plate 419 to move through the connecting rod 425, so that the sliding plate 419 can slide inside the arc plate 417, so that the sliding plate 419 can drive the adjusting plate 416 to move through the U-shaped plate 415, so that the position of the adjusting plate 416 changes. When the hollow plate 426 moves, the elastic force of the second spring 4292 enables the arc-shaped slide plate 429 to drive the insertion rod 428 to be inserted into the bearing plate 4297, so as to limit the position of the hollow plate 426 and the sliding plate 419; After the position of the sliding plate 419 is adjusted, the first cylinder 3 is turned on, so that the first cylinder 3 drives the slide bar 6 to move, so that the slide bar 6 can drive the hollow frame 411 to move, so that the hollow frame 411 can drive the adjustment plate 416 to move, so that the surface of the adjustment plate 416 can fit the outer surface of the irregular plate, so that the adjustment plate 416 can clamp the plate, so that the device is more stable when cutting and welding the plate; When it is necessary to cut or weld a cylindrical workpiece, the worm 413 is driven to rotate by the first motor 76, so that the worm 413 drives the rotating plate 418 to rotate through the worm gear 414, so that the rotating plate 418 drives the load-bearing plate 4297 to rotate upward to ninety degrees, and the workpiece is placed between the arc-shaped clamping plates 71, and the third cylinder 701 is turned on, so that the third cylinder 701 drives the linkage block 78 and the slider 74 to move through the trapezoidal plate 702, so that the slider 74 can drive the arc-shaped clamping plate 71 to move, so that the arc-shaped clamping plate 71 can clamp the cylindrical workpiece, and when it is necessary to rotate the cylindrical workpiece, the rotating shaft 703 and the gear 77 are driven to rotate by the first motor 76, so that the gear 77 drives the rotating frame 72 and the arc-shaped clamping plate 71 to rotate through the rack 75, so that the arc-shaped clamping plate 71 can drive the clamped cylindrical workpiece to rotate, so that the device can cut and weld the cylindrical workpiece; When welding irregular plates and cylindrical workpieces and the front and rear positions of the cutting welder 58 need to be adjusted, the fourth cylinder 55 is turned on so that the fourth cylinder 55 drives the moving bar 52 to move through the fixed plate 53, so that the moving bar 52 can drive the connecting plate 57 and the cutting welder 58 to move through the fifth cylinder 56, so that the front and rear positions of the cutting welder 58 can be adjusted, and the cutting welder 58 can weld and cut different positions of the workpiece. The connecting plate 57 and the cutting welder 58 are driven to move up and down by the fifth cylinder 56, so that the device can weld and cut workpieces of different thicknesses.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A CNC cutting and welding machine, comprising a support column (1), characterized in that: The top of the support column (1) is fixedly connected to a load-bearing platform (2), the outer side of the load-bearing platform (2) is fixedly connected to a first cylinder (3), the inner side of the first cylinder (3) is fixedly connected to a slide bar (6), the top of the slide bar (6) is provided with an adjustment limit mechanism (4), the bottom of the adjustment limit mechanism (4) is provided with a clamping mechanism (7), and the back end of the top of the load-bearing platform (2) is provided with a welding mechanism (5); The adjusting and limiting mechanism (4) comprises an adjusting component (41) and a limiting component (42), wherein the adjusting component (41) is arranged at the top of the slide bar (6), and the limiting component (42) is arranged at the bottom of the adjusting component (41); The adjusting component (41) comprises a hollow frame (411), the hollow frame (411) being fixedly connected to the top of the slide bar (6), the front of the hollow frame (411) being fixedly connected to a servo motor (412), the outside of the servo motor (412) being fixedly connected to a worm (413), the top of the worm (413) being meshed with a worm wheel (414), the back end of the worm wheel (414) being fixedly connected to a rotating plate (418), the rotating plate (418) being rotatably connected to the hollow frame (411). 11) inside, the top of the rotating plate (418) is fixedly connected to an arc-shaped plate (417), the inner side of the arc-shaped plate (417) is fixedly connected to an arc-shaped rod (4192), the outer periphery of the arc-shaped rod (4192) is sleeved with a first spring (4191), the outer periphery of the arc-shaped rod (4192) is slidably connected to a sliding plate (419), the inner side of the sliding plate (419) is fixedly connected to a U-shaped plate (415), and the inner side of the U-shaped plate (415) is rotatably connected to an adjustment plate (416).

2. A CNC cutting and welding machine according to claim 1, characterized in that: A sliding groove corresponding to the movement track of the sliding bar (6) is provided on the inner side of the load-bearing platform (2), and the sliding bar (6) is slidably connected inside the sliding groove.

3. A CNC cutting and welding machine according to claim 2, characterized in that: The outer side of the first spring (4191) is fixedly connected to the inner side of the arc-shaped plate (417), and the inner side of the first spring (4191) is fixedly connected to the outer side of the sliding plate (419).

4. A CNC cutting and welding machine according to claim 3, characterized in that: The limiting assembly (42) comprises a load-bearing plate (4297), the load-bearing plate (4297) being fixedly connected to the bottom of the rotating plate (418), a connecting frame (4295) being fixedly connected to the right side of the bottom of the load-bearing plate (4297), a rotating shaft (4294) being rotatably connected to the top of the connecting frame (4295), a second motor (4293) being fixedly connected to the top of the rotating shaft (4294), the second motor (4293) being fixedly connected to the bottom of the load-bearing plate (4297), a load-bearing rotating plate (4296) being fixedly connected to the periphery of the rotating shaft (4294), a support plate (422) being fixedly connected to the top of the load-bearing rotating plate (4296), and a second cylinder (422) being fixedly connected to the right side of the support plate (422). 421), a linkage plate (424) is fixedly connected to the left side of the second cylinder (421), a pull plate (423) is fixedly connected to the left side of the linkage plate (424), a connecting rod (425) is fixedly connected to the bottom of the sliding plate (419), a hollow plate (426) is fixedly connected to the bottom of the connecting rod (425), a limiting rod (4291) is fixedly connected to the inside of the hollow plate (426), an arc-shaped slide plate (429) is slidably connected to the periphery of the limiting rod (4291), a second spring (4292) is sleeved on the periphery of the limiting rod (4291), an insertion rod (428) is fixedly connected to the outside of the arc-shaped slide plate (429), and a moving plate (427) is fixedly connected to the bottom of the arc-shaped slide plate (429).

5. A CNC cutting and welding machine according to claim 4, characterized in that: The outer side of the second spring (4292) is fixedly connected to the inner side of the arc-shaped slide plate (429), and the inner side of the second spring (4292) is fixedly connected to the inner side of the hollow plate (426).

6. A CNC cutting and welding machine according to claim 5, characterized in that: A circular hole corresponding to the position of the insertion rod (428) is provided on the inner side of the load-bearing plate (4297), and the insertion rod (428) is inserted into the inner side of the circular hole.

7. A CNC cutting and welding machine according to claim 6, characterized in that: The clamping mechanism (7) comprises a first motor (76), the first motor (76) being fixedly connected to the top of the bearing plate (4297), the first motor (76) being fixedly connected to a rotating shaft (703) at the bottom, the rotating shaft (703) being fixedly connected to a gear (77) at the bottom, the gear (77) being meshed with a rack (75) at the outside, the rack (75) being fixedly connected to a rotating frame (72) at the inside, the rotating frame (72) being fixedly connected to a limit block (73) at the top, the rotating frame (72) being fixedly connected to a rectangular plate (79) at the bottom inside the rotating frame (72), the rectangular plate (79) being fixedly connected to a third cylinder (701) at the right side, the third cylinder (701) being fixedly connected to a trapezoidal plate (702) at the left side, the trapezoidal plate (702) being slidably connected to a linkage block (78) at the inside, the linkage block (78) being fixedly connected to a slider (74) at the outside, and the slider (74) being fixedly connected to an arc-shaped clamping plate (71) at the bottom.

8. A CNC cutting and welding machine according to claim 7, characterized in that: A circular groove corresponding to the movement trajectory of the limit block (73) is provided on the inner side of the load-bearing plate (4297), and the limit block (73) is slidably connected inside the circular groove.

9. A CNC cutting and welding machine according to claim 8, characterized in that: The welding mechanism (5) comprises a support frame (51), the support frame (51) being fixedly connected to the top back end of the load-bearing platform (2), a vertical plate (54) being fixedly connected to the top of the support frame (51), a fourth cylinder (55) being fixedly connected to the front of the vertical plate (54), a fixed plate (53) being fixedly connected to the back end of the fourth cylinder (55), a moving bar (52) being fixedly connected to the top of the front of the fixed plate (53), a fifth cylinder (56) being fixedly connected to the top of the moving bar (52), a connecting plate (57) being fixedly connected to the bottom of the fifth cylinder (56), and a cutting welder (58) being fixedly connected to the bottom of the connecting plate (57).

10. A CNC cutting and welding machine according to claim 9, characterized in that: A limiting groove corresponding to the movement track of the moving bar (52) is provided on the inner side of the support frame (51), and the moving bar (52) is slidably connected inside the limiting groove.

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