Plasma metal cutting equipment and cutting method

Abstract

The invention discloses plasma metal cutting equipment and a cutting method, and relates to the technical field of plasma metal cutting. The plasma metal cutting equipment comprises a plasma cutting machine, and a feeding mechanism is arranged on one side of the plasma cutting machine; the feeding mechanism comprises a hydraulic expansion piece, one end of the hydraulic expansion piece is hinged to one side of the plasma cutting machine, a placing plate is hinged to the other end of the hydraulic expansion piece, and a second hinge block is fixedly connected to the outer wall of the placing plate. The push rod can push the lowermost metal plate in the metal plate pile to the plasma cutting machine, so that the metal plates can be automatically pushed to the plasma cutting machine for cutting machining work, the feeding mode saves a large amount of energy of workers through a method without lifting heavy metal plates, the operation is more convenient, and the working efficiency is improved. And the collision problem caused by manual lifting of the metal plate is also reduced.

Description

Technical Field

[0001] The invention relates to the technical field of plasma metal cutting, and in particular to a plasma metal cutting device and a cutting method. Background Art

[0002] Cutting machines are divided into flame cutting machines, plasma cutting machines, laser cutting machines, water jet cutting machines, etc. Laser cutting machines have the highest efficiency, the highest cutting accuracy, and generally cut smaller thicknesses; plasma cutting machines also have very fast cutting speeds, and the cutting surface has a certain slope; flame cutting machines are designed for thicker carbon steel materials; A cutting device for metal pipe fittings of a vehicle bracket described in a patent application with announcement number CN221639918U belongs to the field of feeding structure, and includes a machine table. A feeding mechanism is arranged to cooperate with the use of the upper cutting device. After the steel pipes to be cut are placed in a storage shell in a vertical stacking manner and placed above a feeding plate in the storage shell, the driving motor driving output end is turned on to drive the threaded rod to rotate through a rotating rod, so that the feeding plate moves upward in the storage shell along the threaded rod through the threaded hole on the top surface of the connecting plate at the rear end, and pushes the steel pipe in the storage shell upward during the movement. When the photoelectric sensor senses that there is an object in front of the steel pipe during the upward movement, the electric push rod will push the push plate to move forward, and push the top steel pipe in the storage shell onto the machine table, so that the fixing fixture fixes the steel pipe for cutting. At present, when cutting metal plates, the metal plates are generally placed on storage racks for storage. When cutting, the staff needs to manually take the steel plates and place them on the cutting machine, fix the steel plates with the fixing clamps on the machine, and then cut them. Because the cutting equipment needs to manually load the materials every time when cutting the metal plates, the metal plates are heavy, and manual transportation to the table is not only complicated, but also easy to cause bumps on the metal plates, resulting in damage and deformation of the metal plates. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a plasma metal cutting device and a cutting method, which achieve the purpose of solving the above-mentioned problems.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a plasma metal cutting device and a cutting method, comprising a plasma cutting machine, wherein a feeding mechanism is provided on one side of the plasma cutting machine; The feeding mechanism comprises: A hydraulic retractor, one end of which is hinged to one side of the plasma cutting machine, and the other end of which is hinged to a placement plate, the outer wall of which is fixedly connected to a second hinge block, the inner wall of which is hinged to a first hinge block via a rotating shaft, one side of which is fixedly connected to one side of the plasma cutting machine, and the hydraulic retractor is used for retracting to promote the rotation of the placement plate; The covering plate is a three-sided U-shaped frame structure. The outer wall of the covering plate is fixedly connected with a connecting rod, one end of the connecting rod is fixedly connected to the outer wall of the placement plate, the connecting rod is used to connect the placement plate and the covering plate, the placement plate is used to hold metal plates, and the covering plate is used to support and protect the metal plates when they are stacked.

[0005] Preferably, a first slide groove is formed between the cage plate and the placement plate, a slider is slidably connected to the inner wall of the first slide groove, an electric slide is fixedly connected to the outer wall of the slider, a push rod is fixedly connected to one side of the hydraulic telescope, and the electric slide is used to control the slider to slide left and right along the inner wall of the first slide groove.

[0006] Preferably, the outer wall of the plasma cutting machine is fixedly connected to a fixing rod, one end of the fixing rod is fixedly connected to a long plate, the inner wall of the long plate is provided with a second slide groove, the height of the inner wall of the second slide groove is consistent with that of the first slide groove, and the push rod is used to push the metal plate.

[0007] Preferably, a clamping block is fixedly connected to one side of the cage plate, and a clamping block is fixedly connected to the top of the long plate, and the thickness of the clamping block can be embedded in the clamping block.

[0008] Preferably, a limiting mechanism is provided on the outer wall of the cage plate, and the limiting mechanism includes a fixed sleeve, one side of the fixed sleeve is fixedly connected to one side of the cage plate, the inner wall of the fixed sleeve is provided with hydraulic oil, and the inner wall of the fixed sleeve is provided with a counterweight slider and a sliding baffle.

[0009] Preferably, the outer wall of the sliding baffle is slidably connected to the inner wall of the fixed sleeve, the inner wall of the fixed sleeve is slidably connected to the outer wall of the counterweight slider, the outer wall of the counterweight slider is fixedly connected with a baffle, the outer wall of the baffle is fixedly connected with an elastic rope, one end of the elastic rope is fixedly connected to the outer wall of the fixed sleeve through a vertical plate, the vertical plate is fixedly connected to the outer wall of the fixed sleeve, and the outer wall of the sliding baffle is fixedly connected to a limiting plate.

[0010] Preferably, the outer wall of the cage plate is provided with a rotating mechanism, and the rotating mechanism includes a hollow frame, the outer wall of the cage plate is fixedly connected to the inner wall of the hollow frame, the inner wall of the hollow frame is fixedly connected to a telescopic rod, one end of the telescopic rod is connected to a push rod through a bearing, the outer wall of the push rod is fixedly connected to a roller, and one side of the roller is fixedly connected to a blade.

[0011] Preferably, a groove is provided on the inner wall of the placement plate, and the groove is a square groove, which can reduce the weight of the placement plate, and the blades are distributed on the outer wall of the push rod in an inclined manner.

[0012] A plasma metal cutting method comprises the following steps: S1: Several metal plates that need to be plasma cut are stacked one by one on the loading mechanism, and then the hydraulic retractor is started to extend and elongate, and the placement plate is pushed up by hinged connection; S2: When the placement plate is rotated and lifted to a horizontal position, the metal plate placed on the placement plate is horizontally transported to the left side of the plasma cutting machine to align the metal plate; S3: At this time, the staff can pull the metal plate onto the plasma cutting machine for easy operation; S4: The electric slide machine can also be started to drive the push rod metal plate, so that the metal plate can be automatically pushed onto the plasma cutting machine for cutting processing; S5: After the placement plate is turned over and laid flat, the clamping block is embedded between the two clamping blocks, thereby positioning the placement plate and the cage plate.

[0013] The present invention provides a plasma metal cutting device and a cutting method, which have the following beneficial effects: 1. The present invention sets a feeding mechanism, and the push rod can push the lowest metal plate in the metal plate pile to the plasma cutting machine, so that the metal plate can be automatically pushed to the plasma cutting machine for cutting processing. This feeding method saves a lot of staff energy by eliminating the need to lift heavier metal plates, making the operation more convenient and reducing the bumping problem caused by manual lifting of metal plates.

[0014] 2. The present invention sets a feeding mechanism. After the placement plate is flipped and laid flat, the block on one side of the cover plate above the placement plate will be embedded between the two clamping blocks, so as to position the placement plate and the cover plate to prevent distortion and shaking. When the push rod pushes the metal plate subsequently, unstable and inaccurate pushing will not occur. The mechanism also has a self-checking function. Once an offset occurs, it means that the position has deviated and needs to be adjusted in time to ensure the stability of the metal plate loading.

[0015] 3. The present invention sets a feeding mechanism. When the placement plate is rotated and lifted, the first slide groove between the placement plate and the covering plate will be aligned with the second slide groove opened in the middle of the long plate. At this time, the electric slide machine can drive the slider and the push rod to continue to slide to the right along the inner wall of the second slide groove, and the metal plate can be pushed far enough to realize the integrated feeding of the metal plate.

[0016] 4. The present invention sets a limiting mechanism to achieve the side of the stacked metal plates being supported by the side of the limiting plate and the sliding baffle, ensuring that the metal plates can be loaded onto the plasma cutting machine workbench layer by layer, and can complete the one-time large-scale stacking of metal plates without the need for workers to place them one by one and continuously lift them, thereby maximizing the work efficiency of metal plate loading as much as possible.

[0017] 5. By setting a limit mechanism, the present invention can also realize that when the metal plate is placed, the sliding baffle and the limit plate automatically retract, which does not affect the placement of the metal plate. When the metal plate is straightened and pushed, the metal plate can be automatically blocked without manual operation by the staff, realizing the working process of continuous pushing layer by layer, thereby making the operation more convenient and avoiding accidents caused by operational errors and the occurrence of reduced efficiency.

[0018] 6. The present invention sets a rotating mechanism. When the push rod pushes the bottom metal plate outward, the upper metal plate is supported by the three telescopic rods at the rear, ensuring that when the push rod pushes the bottom metal plate, the upper metal plates remain stably stacked, and the problem of tilting, falling and collapsing will not occur when the bottom metal plate is about to be pushed out of the metal pile, thereby ensuring stable loading of the metal plates when they are pushed out layer by layer.

[0019] 7. The present invention sets a rotating mechanism and utilizes the rotation of the inclined surface of the blade to form a lateral flow of air, and utilizes the opening of the groove to blow off some particles on the surface of the placement plate as much as possible, thereby ensuring that the upper metal plate will not collide with the particles when it falls onto the placement plate when the push rod is recovered into the hollow frame. The metal plate is protected as much as possible during the loading process, reducing damage to the metal plate, so as to ensure the quality of subsequent metal plate cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a structural schematic diagram of the feeding mechanism of the present invention; Figure 3 It is a cross-sectional structural schematic diagram of the feeding mechanism of the present invention; Figure 4 The motion state of the feeding mechanism of the present invention is shown in FIG. Figure 1 ; Figure 5 The motion state of the feeding mechanism of the present invention is shown in FIG. Figure 2 ; Figure 6 The motion state of the feeding mechanism of the present invention is shown in FIG. Figure 3 ; Figure 7 For the present invention Figure 6 A magnified image of point A; Figure 8 For the present invention Figure 6 A magnified view of point B; Fig. 9 The structure diagram of the limiting mechanism of the present invention is shown in FIG. Figure 1 ; Fig.10 The structure diagram of the limiting mechanism of the present invention is shown in FIG. Figure 2 ; Fig.11 The motion state of the limiting mechanism of the present invention is shown in FIG. Figure 1 ; Fig.12 The motion state of the limiting mechanism of the present invention is shown in FIG. Figure 2 ; Fig.13 It is a structural schematic diagram of the rotating mechanism of the present invention; Fig.14 For the present invention Figure 3 Enlarged view of point C; Fig.15 It is a structural schematic diagram of the rotating mechanism of the present invention.

[0021] In the figure: 1 plasma cutting machine, 2 feeding mechanism, 201 hydraulic telescopic device, 202 first hinge block, 203 rotating shaft, 204 second hinge block, 205 placement plate, 206 first slide groove, 207 connecting rod, 208 cover plate, 209 electric slide machine, 210 slider, 211 push rod, 212 block, 213 clamping block, 214 long plate, 215 second slide groove, 216 fixed rod, 3 limiting mechanism, 301 fixed sleeve, 302 counterweight slider, 303 baffle, 304 elastic rope, 305 vertical plate, 306 sliding baffle, 307 limiting plate, 4 rotating mechanism, 401 telescopic rod, 402 roller, 403 blade, 404 groove, 405 hollow frame. DETAILED DESCRIPTION

[0022] Example 1: Please refer to Figure 1-4 , the present invention provides a technical solution: a plasma metal cutting device and a cutting method, comprising a plasma cutting machine 1, a feeding mechanism 2 is provided on one side of the plasma cutting machine 1; The feeding mechanism 2 comprises: A hydraulic retractor 201, one end of which is hinged to one side of the plasma cutting machine 1, and the other end of which is hinged to a placement plate 205, the outer wall of which is fixedly connected to a second hinge block 204, the inner wall of which is hinged to a first hinge block 202 via a rotating shaft 203, one side of which is fixedly connected to one side of the plasma cutting machine 1, and the hydraulic retractor 201 is used for retracting to push the placement plate 205 to rotate; The covering plate 208 is a three-sided frame structure in a U shape. The outer wall of the covering plate 208 is fixedly connected with a connecting rod 207. One end of the connecting rod 207 is fixedly connected to the outer wall of the placement plate 205. The connecting rod 207 is used to connect the placement plate 205 and the covering plate 208. The placement plate 205 is used to hold metal plates, and the covering plate 208 is used to support and protect the metal plates when they are stacked.

[0023] A first slide groove 206 is formed between the covering plate 208 and the placement plate 205. A slider 210 is slidably connected to the inner wall of the first slide groove 206. An electric slide machine 209 is fixedly connected to the outer wall of the slider 210. A push rod 211 is fixedly connected to one side of the hydraulic telescope 201. The electric slide machine 209 is used to control the slider 210 to slide left and right along the inner wall of the first slide groove 206.

[0024] A fixing rod 216 is fixedly connected to the outer wall of the plasma cutting machine 1, and one end of the fixing rod 216 is fixedly connected to a long plate 214. A second slide groove 215 is opened on the inner wall of the long plate 214. The height of the inner wall of the second slide groove 215 is consistent with that of the first slide groove 206. The push rod 211 is used to push the metal plate.

[0025] A clamping block 212 is fixedly connected to one side of the cage plate 208, and a clamping block 213 is fixedly connected to the top of the long plate 214. The thickness of the clamping block 212 can be embedded in the clamping block 213; Several metal plates to be plasma cut are stacked one by one on the loading mechanism 2, and then the hydraulic retractor 201 is started to be extended and stretched, and the placement plate 205 is pushed up by hinged connection. The placement plate 205 is rotated and lifted up at the center of the rotation shaft 203 under the hinge connection of the second hinge block 204, the rotation shaft 203 and the first hinge block 202; When the placement plate 205 is rotated and lifted to a horizontal position, the metal plate placed in the placement plate 205 is horizontally transported to the left side of the plasma cutting machine 1. At this time, the staff can pull the metal plate onto the plasma cutting machine 1 by pulling, which is convenient for operation. Alternatively, the electric slide 209 may be started to drive the slide block 210 to slide on the inner wall of the first slide groove 206, and the slide block 210 may also drive the push rod 211 to move from left to right on the placement plate 205, so that the push rod 211 can push the metal plate at the bottom of the metal plate pile toward the plasma cutting machine 1, so that the metal plate can be automatically pushed onto the plasma cutting machine 1 for cutting. This loading method saves a lot of staff energy by eliminating the need to lift heavier metal plates, making the operation more convenient and reducing the collision problem caused by manual lifting of metal plates. After the placement plate 205 is turned over and laid flat, the block 212 on one side of the cover plate 208 above the placement plate 205 will be embedded between the two clamping blocks 213, so as to position the placement plate 205 and the cover plate 208 to prevent the problem of twisting and shaking, and ensure that when the push rod 211 pushes the metal plate in the subsequent process, the push is not unstable and inaccurate, and has a self-checking function. Once the offset occurs, it means that the position is deviated and needs to be adjusted in time to ensure the stability of the metal plate material. When the placing plate 205 is rotated and lifted, the first slide groove 206 between the placing plate 205 and the covering plate 208 will be aligned with the second slide groove 215 opened in the middle of the long plate 214. At this time, the electric slide machine 209 can drive the slider 210 and the push rod 211 to continue to slide to the right along the inner wall of the second slide groove 215, so that the metal plate can be pushed far enough to realize the integrated feeding of the metal plate; Furthermore, when placing the metal plate, the sliding baffle 306 and the limiting plate 307 can be automatically retracted without affecting the placement of the metal plate. When the metal plate is aligned for pushing, the metal plate can be automatically blocked without manual operation by the staff, thus realizing the working process of continuously pushing the metal plate layer by layer, thereby making the operation more convenient and avoiding accidents and reduced efficiency caused by operating errors. Example 2: Please refer to Figure 1-12 On the basis of the first embodiment, the present invention provides a technical solution: a limiting mechanism 3 is arranged on the outer wall of the covering plate 208, the limiting mechanism 3 comprises a fixed sleeve 301, one side of the fixed sleeve 301 is fixedly connected to one side of the covering plate 208, hydraulic oil is arranged on the inner wall of the fixed sleeve 301, and a counterweight slider 302 and a sliding baffle 306 are arranged on the inner wall of the fixed sleeve 301.

[0026] The outer wall of the sliding baffle 306 is slidably connected to the inner wall of the fixed sleeve 301, the inner wall of the fixed sleeve 301 is slidably connected to the outer wall of the counterweight slider 302, the outer wall of the counterweight slider 302 is fixedly connected with the baffle 303, the outer wall of the baffle 303 is fixedly connected with the elastic rope 304, one end of the elastic rope 304 is fixedly connected to the outer wall of the fixed sleeve 301 through the vertical plate 305, the vertical plate 305 is fixedly connected to the outer wall of the fixed sleeve 301, and the outer wall of the sliding baffle 306 is fixedly connected to the limit plate 307; When the placing plate 205 and the covering plate 208 are in a tilted and collapsed state, the staff can place a metal plate inside them. To place the metal plate in this way, it is only necessary to lift the metal plate vertically, drop the bottom into the placing plate 205 and the covering plate 208, push the metal plate backward, and let the metal plate fall onto the covering plate 208 to complete the placement of the metal plate. At this time, since the placing plate 205 and the covering plate 208 are in a tilted state, the fixing sleeve 301 and the counterweight slider 302 on the outer wall of the covering plate 208 are also in a tilted state, and the counterweight slider 302 is in the fixing sleeve 301 and the counterweight slider 302 is in a tilted state due to its own heavier gravity. 01, and the elastic rope 304 is pulled by the baffle plate 303 to deform it. When the counterweight slider 302 extends from the inside of the fixed sleeve 301, the hydraulic oil inside the fixed sleeve 301 forms a negative pressure, and the limit plate 307 on the other side of the fixed sleeve 301 is quickly sucked into it, so that the limit plate 307 and the sliding baffle plate 306 at this time completely enter the inside of the fixed sleeve 301, so that the limit plate 307 and the sliding baffle plate 306 will not extend out of the cover plate 208, and the sliding baffle plate 306 and the limit plate 307 will be embedded in the cover plate 208, which is convenient for the direct placement of the metal plate; When the placement plate 205 and the cover plate 208 are lifted back to the original position, the fixed sleeve 301 and the counterweight slider 302 are also returned to the original position. Then, the counterweight slider 302 is no longer subjected to the vertical downward gravity, but is subjected to the elastic force of the horizontal elastic rope 304. The elastic force of the elastic rope 304 pulls the baffle plate 303 and the counterweight slider 302, so that the counterweight slider 302 is retracted into the fixed sleeve 301, and the baffle plate 303 is pressed against the fixed sleeve 301 to limit the position. At this time, since the counterweight slider 302 enters the fixed sleeve 301, it will push and squeeze the internal hydraulic oil, so that the sliding baffle plate 306 and the limit plate 306 are pressed together. 07 Extrusion ejects the outer portion of the cover plate 208 and the fixed sleeve 301, and at this time, the side of the metal plates stacked in layers is supported by the side of the limit plate 307 and the sliding baffle 306, so that when the push rod 211 pushes the metal plate of the bottom layer, all the metal plates above the penultimate layer will be automatically blocked, ensuring that the metal plates can be loaded onto the workbench of the plasma cutting machine 1 layer by layer, and a large number of metal plates can be stacked at one time, without the need for the staff to place them one by one and lift them continuously, so as to maximize the efficiency of loading the metal plates; Furthermore, when placing the metal plate, the sliding baffle 306 and the limiting plate 307 can be automatically retracted without affecting the placement of the metal plate. When the metal plate is aligned for pushing, the metal plate can be automatically blocked without manual operation by the staff, thus realizing the working process of continuously pushing the metal plate layer by layer, thereby making the operation more convenient and avoiding accidents and reduced efficiency caused by operating errors. Example 3: Please refer to Figure 1-15On the basis of the first and second embodiments, the present invention provides a technical solution: a rotating mechanism 4 is arranged on the outer wall of the covering plate 208, the rotating mechanism 4 includes a hollow frame 405, the outer wall of the covering plate 208 is fixedly connected to the inner wall of the hollow frame 405, a telescopic rod 401 is fixedly connected to the inner wall of the hollow frame 405, one end of the telescopic rod 401 is connected to the push rod 211 through a bearing, a roller 402 is fixedly connected to the outer wall of the push rod 211, and a blade 403 is fixedly connected to one side of the roller 402.

[0027] The inner wall of the placement plate 205 is provided with a groove 404, which is a square groove. The groove 404 can reduce the weight of the placement plate 205, and the blades 403 are distributed on the outer wall of the push rod 211 in an inclined manner; When the electric slide 209 is started to drive the slider 210 and the push rod 211 to push the metal plate, the push rod 211 will drive the telescopic rod 401 on the left to stretch through the bearing. The telescopic rod 401 is made of steel and has good bending and folding resistance. Therefore, when the push rod 211 drives the three telescopic rods 401 to stretch and lengthen at the same time, when the push rod 211 pushes the bottom metal plate outward, the three telescopic rods 401 at the rear can support the upper metal plate, ensuring that when the push rod 211 pushes the bottom metal plate, the upper metal plate can be stably stacked, and the problem of tilting, falling and collapsing will not occur when the bottom metal plate is about to be pushed out of the metal pile, thereby ensuring the stable loading of the metal plates when they are pushed out layer by layer. At the same time, when the push rod 211 is pushed out, the roller 402 on the outer wall of the push rod 211 will contact the surface of the placement plate 205 at the bottom at this time, and with the push of the push rod 211, the roller 402 will perform contact rolling rotation and drive the blade 403 to rotate. The rotation of the inclined surface of the blade 403 can form a lateral flow of air, and the metal particles and debris on the surface of the placement plate 205 at the bottom of the pushed metal plate can be displaced to a certain extent through the flow of air. Then, the groove 404 opened on the inner wall of the placement plate 205 can be used to fall outward naturally, and the opening of the groove 404 can be used to blow off some particles on the surface of the placement plate 205 as much as possible, so as to ensure that the upper metal plate will not collide with the particles when it falls onto the placement plate 205 when the push rod 211 is recovered into the hollow frame 405, so as to protect the metal plate as much as possible during the loading process, reduce the damage to the metal plate, and ensure the quality of subsequent metal plate cutting. When the upper metal plate falls and touches the push rod 211, it will first contact the roller 402 on the push rod 211, thereby avoiding the problem of large friction due to the large contact area caused by the push rod 211 and the metal plate as a whole. A plasma metal cutting method comprises the following steps: S1: Several metal plates to be plasma cut are stacked one by one onto the loading mechanism 2, and then the hydraulic retractor 201 is started to be extended and stretched, and the placement plate 205 is pushed up by a hinged manner; S2: When the placement plate 205 is rotated and lifted to a horizontal position, the metal plate placed in the placement plate 205 is horizontally transported to the left side of the plasma cutting machine 1, and the metal plate is straightened; S3: At this time, the worker can pull the metal plate onto the plasma cutting machine 1 by pulling it out, so as to facilitate the operation; S4: The electric slide 209 can also be started to drive the push rod 211 to move the metal plate, so that the metal plate can be automatically pushed onto the plasma cutting machine 1 for cutting processing; S5: After the placement plate 205 is turned over and laid flat, the clamping block 212 is embedded between the two clamping blocks 213, so as to locate the positions of the placement plate 205 and the covering plate 208.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A plasma metal cutting device, comprising a plasma cutting machine (1), characterized in that: A feeding mechanism (2) is provided on one side of the plasma cutting machine (1); The feeding mechanism (2) comprises: A hydraulic telescopic device (201), one end of the hydraulic telescopic device (201) being hinged to one side of the plasma cutting machine (1), the other end of the hydraulic telescopic device (201) being hinged to a placement plate (205), the outer wall of the placement plate (205) being fixedly connected to a second hinge block (204), the inner wall of the second hinge block (204) being hinged to a first hinge block (202) via a rotating shaft (203), one side of the first hinge block (202) being fixedly connected to one side of the plasma cutting machine (1), the hydraulic telescopic device (201) being used to telescope and play a role in driving the placement plate (205) to rotate; A covering plate (208), the covering plate (208) being a U-shaped three-sided frame structure, the outer wall of the covering plate (208) being fixedly connected with a connecting rod (207), one end of the connecting rod (207) being fixedly connected to the outer wall of the placement plate (205), the connecting rod (207) being used to connect the placement plate (205) and the covering plate (208), the placement plate (205) being used to hold metal plates, and the covering plate (208) being used to support and protect the metal plates when they are stacked.

2. A plasma metal cutting device according to claim 1, characterized in that: A first slide groove (206) is formed between the cage plate (208) and the placement plate (205); a slider (210) is slidably connected to the inner wall of the first slide groove (206); an electric slide machine (209) is fixedly connected to the outer wall of the slider (210); a push rod (211) is fixedly connected to one side of the hydraulic telescopic device (201); and the electric slide machine (209) is used to control the slider (210) to slide left and right along the inner wall of the first slide groove (206).

3. The plasma metal cutting device according to claim 2, characterized in that: The outer wall of the plasma cutting machine (1) is fixedly connected to a fixing rod (216), one end of the fixing rod (216) is fixedly connected to a long plate (214), the inner wall of the long plate (214) is provided with a second slide groove (215), the height of the inner wall of the second slide groove (215) is consistent with that of the first slide groove (206), and the push rod (211) is used to play a role in pushing the metal plate.

4. The plasma metal cutting device according to claim 3, characterized in that: A clamping block (212) is fixedly connected to one side of the cage plate (208), and a clamping block (213) is fixedly connected to the top of the long plate (214). The thickness of the clamping block (212) can be embedded in the clamping block (213).

5. The plasma metal cutting device according to claim 4, characterized in that: The outer wall of the cage plate (208) is provided with a limiting mechanism (3), the limiting mechanism (3) comprising a fixing sleeve (301), one side of the fixing sleeve (301) being fixedly connected to one side of the cage plate (208), the inner wall of the fixing sleeve (301) being provided with hydraulic oil, and the inner wall of the fixing sleeve (301) being provided with a counterweight slider (302) and a sliding baffle (306).

6. The plasma metal cutting device according to claim 5, characterized in that: The outer wall of the sliding baffle (306) is slidably connected to the inner wall of the fixing sleeve (301), the inner wall of the fixing sleeve (301) is slidably connected to the outer wall of the counterweight slider (302), the outer wall of the counterweight slider (302) is fixedly connected to a baffle (303), the outer wall of the baffle (303) is fixedly connected to an elastic rope (304), one end of the elastic rope (304) is fixedly connected to the outer wall of the fixing sleeve (301) via a vertical plate (305), the vertical plate (305) is fixedly connected to the outer wall of the fixing sleeve (301), and the outer wall of the sliding baffle (306) is fixedly connected to a limiting plate (307).

7. The plasma metal cutting device according to claim 6, characterized in that: The outer wall of the cage plate (208) is provided with a rotating mechanism (4), the rotating mechanism (4) comprising a hollow frame (405), the outer wall of the cage plate (208) is fixedly connected to the inner wall of the hollow frame (405), the inner wall of the hollow frame (405) is fixedly connected to a telescopic rod (401), one end of the telescopic rod (401) is connected to a push rod (211) via a bearing, the outer wall of the push rod (211) is fixedly connected to a roller (402), and one side of the roller (402) is fixedly connected to a blade (403).

8. The plasma metal cutting device according to claim 7, characterized in that: The inner wall of the placement plate (205) is provided with a groove (404), and the groove (404) is a square groove. The groove (404) can reduce the weight of the placement plate (205), and the blades (403) are distributed on the outer wall of the push rod (211) in an inclined manner.

9. A plasma metal cutting method, according to a plasma metal cutting device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: placing a plurality of metal plates to be plasma cut one by one on a loading mechanism (2), and then starting the hydraulic retractor (201) so that the hydraulic retractor (201) is extended and stretched, and the placement plate (205) is pushed upward by means of a hinge; S2: When the placement plate (205) is rotated and lifted to a horizontal position, the metal plate placed in the placement plate (205) is horizontally moved to the left side of the plasma cutting machine (1) to align the metal plate; S3: At this time, the worker can pull the metal plate onto the plasma cutting machine (1) to facilitate operation; S4: The electric slide (209) can also be started to drive the push rod (211) to move the metal plate, so that the metal plate can be automatically pushed onto the plasma cutting machine (1) for cutting processing; S5: After the placement plate (205) is turned over and laid flat, the clamping block (212) is embedded between the two clamping blocks (213), thereby positioning the placement plate (205) and the cage plate (208).

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