Adjustable numerical control flame cutting machine

Abstract

The invention discloses an adjustable numerical control flame cutting machine, and relates to the field of flame cutting machines, the adjustable numerical control flame cutting machine comprises a supporting table, supporting plates are arranged on the supporting table, each supporting plate can move in the vertical direction, a starting part is arranged on one side of a sliding table, and when a cutting structure moves, under the cooperation of the starting part, the cutting structure can move in the vertical direction. A supporting plate located below a cutting torch of the cutting mechanism moves downwards, so that the supporting plate is far away from the plate to form a gap; the sliding table moves to trigger the supporting plate below the cutting area to automatically move downwards, so that a certain gap is formed between the supporting plate and a plate, slag cannot make contact with the surface of the supporting plate immediately, the slag can make contact with the supporting rack only after falling by a certain distance, the adhesion strength of the slag is remarkably reduced, adhesion cannot be too tight even if adhesion is conducted, later-period removal is easy, and the service life of the plate is prolonged. Meanwhile, only the supporting plate below the current cutting position is subjected to avoiding operation, frequent lifting of irrelevant areas is avoided, the supporting plate is protected, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The present invention relates to the technology of flame cutting machines, and particularly to an adjustable numerically controlled flame cutting machine. Background Art

[0002] Traditional numerically controlled flame cutting machines usually adopt an array-type toothed support table structure. The to-be-cut plates are carried by the support plates densely arranged on the support table. During the cutting process, the flame torch moves along a preset trajectory, and the high-temperature molten slag falls downward from the cutting seam and directly contacts the surface of the support plate. Since the molten slag is in a molten state, it is extremely easy to adhere to the surface of the support plate to form accumulations, resulting in the rapid cooling and solidification of the molten slag after direct contact with the support plate, forming residues that adhere tightly. In the prior art, some devices adopt the method of integrally lifting the support table to clean the molten slag after cutting, but this method requires interrupting the processing flow; in addition, when the cutting path passes through the top of the support plate, the flame may mis-cut the toothed part of the support plate, causing damage to the support structure and reducing its load-bearing stability. Summary of the Invention

[0003] The purpose of the present invention is to provide an adjustable numerically controlled flame cutting machine to solve the problems that molten slag is extremely easy to adhere to the surface of the support plate to form accumulations and the flame may mis-cut the toothed part of the support plate in the prior art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: An adjustable numerically controlled flame cutting machine includes a support table. A plurality of toothed support plates are arranged in an array on the support table. Tracks are provided on both sides of the support table, and a sliding table is slidably connected to the tracks. A gantry is installed between the two sliding tables, and a cutting mechanism is installed on the gantry. Each support plate can move in the vertical direction. A starting member is provided on one side of the sliding table. When the cutting structure moves, under the cooperation of the starting member, the support plate located below the torch of the cutting mechanism moves downward, so that the support plate moves away from the plate to form a gap. The starting member includes a bracket installed on the sliding table or the gantry. One side of the bracket is fixedly connected with a driving plate. Slots are opened at both ends of the driving plate. A V-shaped guide groove is opened on the side of the driving plate close to the support plate, and the V-shaped guide groove communicates with the two slots. There are two symmetrical inclined surfaces on the side of the driving plate away from the support plate.

[0005] Further, limit shafts are fixedly installed at both ends of the support plate. Two vertical plates are installed on the support table. First sliding grooves for the longitudinal sliding of the limit shafts are opened on the vertical plates. A limit component is provided on one side of the sliding table, which is used to limit the movement of the limit shafts to make them at the top of the first sliding grooves.

[0006] Further, the limiting component includes a base fixedly installed on one side of the sliding table. A limiting column is slidably connected inside the base. A limiting hole adapted to the end of the limiting shaft is provided on the side of the limiting column away from the base. A first spring is installed between the base and the limiting column, and the elastic force of the first spring acts on the limiting column to make it tend to move away from the base.

[0007] Further, the width of the slot is greater than the diameter of the limiting shaft. When the driving plate moves, it can push the limiting column to move and compress the first spring through the inclined surface, and the limiting shaft moves along the slot and the V-shaped guide groove.

[0008] Further, a sliding sleeve is fixedly connected to the surface of the limiting shaft, and the sliding sleeve is slidably connected to the first chute.

[0009] Further, a guide rod is fixedly connected to the top of the sliding sleeve. The guide rod penetrates through the vertical plate and is slidably connected to the inner wall of the vertical plate. A second spring is sleeved on the guide rod, and the elastic force of the second spring acts on the guide rod to make it tend to move upward.

[0010] Further, a shielding member is further provided on one side of the support plate. The shielding member includes a baffle plate rotatably installed on one side of the vertical plate through a rotating rod. When the support plate moves downward, the baffle plate rotates around its rotating connection with the vertical plate to above the support plate.

[0011] Further, a dial rod is fixedly connected to the end of the rotating rod. One end of the dial rod is located below the limiting shaft. A torsion spring is installed at the rotating connection of the rotating rod and the vertical plate, and the torsion force of the torsion spring acts on the rotating rod to make it tend to rotate the baffle plate between two adjacent support plates.

[0012] Further, a socket is provided at the end of the dial rod, and the socket is slidably connected to the surface of the limiting shaft.

[0013] Further, when the baffle plate rotates to above the support plate, the baffle plate is inclined.

[0014] Compared with the prior art, an adjustable numerical control flame cutting machine provided by the present invention has the following beneficial effects: In this adjustable numerical control flame cutting machine, the automatic downward movement of the support plate below the cutting area is triggered by the movement of the sliding table, so that a certain gap is formed between the support plate and the plate, so that the molten slag will not immediately contact the surface of the support plate. The molten slag will contact the support rack only after falling for a certain distance, significantly reducing the adhesion strength of the molten slag. Even if it adheres, it will not be too tight and is easy to clean later; At the same time, the downward movement of the support plate is synchronized with the movement track of the cutting torch in real time. Only the support plate below the current cutting position is avoided, preventing frequent lifting and lowering of irrelevant areas, protecting the support plate and extending the service life of the equipment. Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic diagram of the partial structure of the adjustable numerical control flame cutting machine provided by the embodiment of the present invention; Figure 2 Provided by the embodiment of the present invention Figure 1 Schematic diagram of the partial structure; Figure 3 Provided by the embodiment of the present invention Figure 2 Schematic diagram of the partial longitudinal section; Figure 4 It is a schematic diagram of the first perspective of the drive board provided by the embodiment of the present invention; Figure 5 It is a schematic diagram of the second perspective of the drive board provided by the embodiment of the present invention; Figure 6 It is a schematic diagram of the structure of installing a guide rod and a second spring on the sliding sleeve provided by the embodiment of the present invention; Figure 7 It is a schematic diagram of the state where the baffle is located above the support plate after moving downward provided by the embodiment of the present invention; Figure 8 Provided by the embodiment of the present invention Figure 7 Schematic diagram of the partial longitudinal section; Figure 9 It is a schematic diagram of the state when the baffle rotates to one side of the support plate provided by the embodiment of the present invention; Figure 10 It is a schematic diagram of the structure when the dial rod is provided with a socket provided by the embodiment of the present invention; Figure 11 It is a schematic diagram of the baffle (when located above the support plate) being inclined provided by the embodiment of the present invention.

[0017] Explanation of reference numerals: 1. Support table; 2. Support plate; 21. Limit shaft; 22. Vertical plate; 23. First chute; 24. Sliding sleeve; 25. Guide rod; 26. Second spring; 3. Track; 4. Slide table; 5. Gantry; 6. Limit assembly; 61. Base; 62. Limit post; 63. Limit hole; 64. First spring; 7. Starting member; 71. Bracket; 72. Drive board; 73. Slot; 74. V-shaped guide groove; 75. Inclined surface; 8. Shielding member; 81. Baffle; 82. Rotating rod; 83. Dial rod; 84. Socket. Detailed implementation manners

[0018] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0019] Please refer to Figure 1 - Figure 11 , an adjustable numerically controlled flame cutting machine, including a support table 1, on which a plurality of toothed support plates 2 are arranged in an array distribution, tracks 3 are arranged on both sides of the support table 1, a sliding table 4 is slidably connected to the tracks 3, a gantry 5 is installed between the two sliding tables 4, and a cutting mechanism (not shown in the figure) is installed on the gantry 5; Each support plate 2 can move in the vertical direction. A starting member 7 is arranged on one side of the sliding table 4. When the cutting structure moves, under the cooperation of the starting member 7, the support plate 2 located below the torch of the cutting mechanism moves downward, so that the support plate 2 moves away from the plate to form a gap.

[0020] In an embodiment of the present invention, a specific example (not shown in the figure) of the movement of the support plate 2 is provided. Specifically, cylinders or hydraulic cylinders or electric telescopic rods are arranged at both ends of each support plate 2. The cylinders or hydraulic cylinders or electric telescopic rods are arranged in the vertical direction, and the output end of the cylinder or the output end of the hydraulic cylinder or the output end of the electric telescopic rod is connected to the support plate 2. The support plate 2 moves in the vertical direction under the drive of the cylinder or the hydraulic cylinder or the electric telescopic rod, and each support plate 2 can move independently; further, an induction component is arranged on one side of each support plate 2, that is, a sensor is installed at the corresponding position of each support plate 2, which can be installed at the top edge or side of the support plate 2. The sensor can be a photoelectric switch, a proximity switch, etc. A triggering device, such as a metal baffle or a reflector, etc., is installed at the bottom of the gantry 5 or on one side of the sliding table 4. When the gantry 5 moves to the position of a certain support plate 2, the corresponding sensor is triggered, so as to control the support plate 2 at that position to move downward; Taking the proximity switch as an example, a proximity sensor (inductive type) is installed on one side of the sliding table 4 or the gantry 5, the detection distance is 2 - 15 mm, a metal trigger block (matched with the sensor detection material) is installed at the corresponding position of each support plate 2, and a controller (such as a PLC or a single-chip microcomputer) is also arranged on one side of the support table 1. After receiving the signal, it controls the cylinder or the hydraulic cylinder or the electric telescopic rod to drive the support plate 2 to lift. Specifically, in implementation: All the support plates 2 are at the same height position, and the proximity sensors are in the normally open state; during the horizontal movement of the sliding table 4 or the gantry 5, when the metal trigger block enters the detection range of the proximity sensor corresponding to a certain support plate 2, the sensor triggers a switch signal, the output state of the sensor changes, the controller reads the sensor signal in real time, and the controller outputs a signal to drive the cylinder or hydraulic cylinder or electric telescopic rod to push the support plate 2 down to a preset position. As the sliding table 4 continues to move, the current metal trigger block leaves the detection range of the sensor, the output of the sensor returns to the initial state, and after the controller detects the disappearance of the signal, it immediately or delays the reset of the current support plate 2; On the basis of the above method, when the slag generated during the cutting of the sheet falls from the cutting opening, it will not directly contact the support plate 2 at the cutting position, but will contact the support plate 2 after passing through the formed gap. When the slag splashes, it cools and disperses at the gap, thereby reducing the amount of adhesion and the adhesion force on the support plate 2, facilitating subsequent cleaning operations. At the same time, after the support plate 2 at the cutting position moves downward, the support position at its top will not be affected by the cutting and cause a part of its top to be cut off, avoiding damage to the top structure of the support plate 2 and affecting the subsequent support effect.

[0021] In an embodiment of the present invention, another specific example of the movement of the support plate 2 is provided. Specifically, as Figure 2 and Figure 3 shown, both ends of the support plate 2 are fixedly installed with limit shafts 21. Two vertical plates 22 are installed on the support table 1. The vertical plates 22 are provided with first sliding grooves 23 for the longitudinal sliding of the limit shafts 21. A limit assembly 6 is arranged on one side of the sliding table 4, which is used to limit the movement of the limit shafts 21 so that they are at the top of the first sliding grooves 23; The limit assembly 6 includes a base 61, which is fixedly installed on one side of the sliding table 4. A limit column 62 is slidably connected in the base 61. A limit hole 63 adapted to the end of the limit shaft 21 is provided on the side of the limit column 62 away from the base 61. A first spring 64 is installed between the base 61 and the limit column 62. The elastic force of the first spring 64 acts on the limit column 62 to make it tend to move away from the base 61; As Figure 3 shown, normally, each limit shaft 21 is located in the limit hole 63. Under the action of the limit assembly 6, the limit shafts 21 are at the top of the first sliding grooves 23, and each support plate 2 will be at the same height position. At this time, each support plate 2 is in the normal working state, and the staff can smoothly place the sheet to be cut on the support plate 2; The starting member 7 includes a bracket 71 mounted on the sliding table 4 or the gantry 5. One side of the bracket 71 is fixedly connected with a driving plate 72. Slots 73 are formed at both ends of the driving plate 72. The width of the slot 73 is greater than the diameter of the limiting shaft 21. A V-shaped guide groove 74 is formed on the side of the driving plate 72 close to the support plate 2, and the V-shaped guide groove 74 communicates with the two slots 73. There are two symmetric inclined surfaces 75 on the side of the driving plate 72 away from the support plate 2. When the driving plate 72 moves, it can push the limiting column 62 to move and compress the first spring 64 through the inclined surface 75, and the limiting shaft 21 moves along the slot 73 and the V-shaped guide groove 74.

[0022] The implementation scenario when the starting member 7 moves is specifically as follows: During the docking stage, when the driving plate 72 moves, the slot 73 on one side of its moving direction first docks with the nearest limiting shaft 21 on its moving path. The limiting shaft 21 moves into the slot 73. At this time, even if the limiting component 6 releases the restriction on the limiting shaft 21, the limiting shaft 21 will not fall, but is restricted at the original height position by the slot 73. During the limit release stage, as the driving plate 72 moves, the inclined surface 75 on one side of it contacts one side of the limiting column 62, and then under the movement of the driving block, it pushes the limiting column 62 to move towards the base 61 side and compresses the first spring 64. When the end of the inclined surface 75 moves to one side of the limiting column 62, the limiting shaft 21 disengages from the limiting hole 63 of the limiting column 62, and the limiting shaft 21 will be transferred into the slot 73 of the driving plate 72. During the movement stage of the support plate 2, when the driving block moves further, the limiting shaft 21 will move along the V-shaped guide groove 74. The limiting shaft 21 will first move downward. If the moving direction of the driving block does not change, the limiting shaft 21 will continue to move downward and move upward after reaching the lowest point. When the limiting shaft 21 moves to the slot 73 on the other side, the limiting shaft 21 returns to the original height position. During the limit restoration stage, when the limiting shaft 21 moves to the slot 73 on the other side, the inclined surface 75 on the other side of the driving plate 72 contacts the limiting column 62. Under the elastic force of the first spring 64, the limiting column 62 returns to its original position, the limiting shaft 21 re-enters the limiting hole 63, and the support plate 2 is stably at the original height position to support the plate. It should be understood that during the above process, the movement of the limit shaft 21 and the corresponding movement of the support plate 2 enable the support plate 2 below the cutting position to move downward in a timely manner. The longitudinal height of the V-shaped groove determines the distance of the downward movement of the limit shaft 21 and the support plate 2. For plates with different thicknesses, the downward movement amplitude of the support plate 2 can be adjusted by adjusting the height of the V-shaped groove. Since a higher preheating temperature and oxygen pressure are required for cutting thicker plates, more molten metal is generated. When the high-pressure oxygen flow blows the slag to the bottom, the kinetic energy is greater, and the cutting speed is slower, resulting in more slag accumulation and a wider sputtering range. While for thinner plates, the cutting speed is faster, the amount of slag is less, the oxygen pressure requirement is lower, and the slag sputtering range is relatively smaller. Therefore, for thick plates, a larger downward movement distance is required, and for thin plates, the distance can be appropriately reduced.

[0023] In an embodiment of the present invention, a sliding sleeve 24 is fixedly connected to the surface of the limit shaft 21, and the sliding sleeve 24 is slidably connected to the first chute 23, as Figure 3 shown. The sliding sleeve 24 is used to limit the rotation of the limit shaft 21, so that the support plate 2 is always in a vertical state; In an embodiment of the present invention, a guide rod 25 is fixedly connected to the top of the sliding sleeve 24. The guide rod 25 penetrates the vertical plate 22 and is slidably connected to the inner wall of the vertical plate 22. A second spring 26 is sleeved on the guide rod 25. The elastic force of the second spring 26 acts on the guide rod 25 to make it tend to move upward. It should be noted that the function of the guide rod 25 is to further make the longitudinal movement of the limit shaft 21 more stable. The second spring 26 is used to provide a certain amount of assistance when the limit shaft 21 moves upward along the V-shaped guide groove 74, so as to reduce the resistance when the limit shaft 21 moves.

[0024] In summary, in the present invention, the automatic downward movement of the support plate 2 below the cutting area is triggered by the movement of the sliding table 4, so that a certain gap is formed between the support plate 2 and the plate, so that the slag will not immediately contact the surface of the support plate 2. The slag will contact the support rack after falling for a certain distance, significantly reducing the slag adhesion strength. Even if it adheres, it will not be too tight and is easy to clean in the later stage; At the same time, the downward movement of the support plate 2 is synchronized with the cutting torch movement trajectory in real time, and the avoidance operation is only performed on the support plate 2 below the current cutting position, avoiding frequent lifting and lowering of irrelevant areas, protecting the support plate 2 and extending the service life of the equipment; After the avoidance action of the support plate 2 ends, the support plate 2 automatically resets without manual intervention and adjustment. The setting of the pneumatic or drive block makes it consume energy only when triggered and has no continuous power consumption in the non-working state. In addition, the centralized slag collection design reduces the equipment downtime for slag cleaning and reduces the maintenance cost; It is worth mentioning that the dynamic avoidance function of the support plate 2 eliminates the problem of plate displacement caused by slag accumulation in the traditional fixed support table 1, ensuring that the plate is always in a stable support state during the cutting process. At the same time, the avoidance gap can accelerate the cooling of the slag and avoid the secondary high temperature from affecting the cutting surface morphology, thereby obtaining a smoother incision quality (mainly because the slag generated by the cutting directly adheres to the closely contacted support plate 2, and the slag that could have fallen is blocked by the support plate 2 and adheres to the position below the cutting mouth, forming a certain accumulation under the plate and adhering to the plate, affecting the cutting quality) In one embodiment of the present invention, in order to further reduce the slag from splashing onto the surface of the support plate 2, a shielding member 8 is further provided on one side of the support plate 2, and the shielding member 8 includes a baffle 81, which is rotatably mounted on one side of the vertical plate 22 through a rotating rod 82. When the support plate 2 moves downward, the baffle 81 rotates around the rotation connection between the baffle 81 and the vertical plate 22 to the top of the support plate 2; like Figure 9 As shown, when the support plate 2 is located at the top, the baffle 81 is located in the space between two adjacent baffles 81, as shown in FIG. Figure 8 As shown, when the support plate 2 is located at the bottom, the baffle 81 rotates to above the support plate 2 to block slag splashing, protect the surface of the support plate 2, and extend the service life of the support plate 2.

[0025] In one embodiment of the present invention, a rotation method of the baffle 81 is provided (not shown in the figure), a motor is fixedly connected to one side of the vertical plate 22, and the output end of the motor is connected to one end of the rotating rod 82. The baffle 81 is driven by the motor to rotate, thereby realizing automatic adjustment of the baffle 81 to ensure that it is blocked above the support plate 2 after the support plate 2 moves downward.

[0026] In one embodiment of the present invention, another rotation mode of the baffle 81 is provided, the end of the rotating rod 82 is fixedly connected to a lever 83, one end of the lever 83 is located below the limit shaft 21, and a torsion spring (not shown in the figure) is installed at the rotation connection between the rotating rod 82 and the vertical plate 22. The torsion force of the torsion spring acts on the rotating rod 82 to make it have a tendency to rotate the baffle 81 to between two adjacent support plates 2. When the limit shaft 21 moves downward, the lever 83 is compressed to drive the rotating rod 82 to rotate, so that the baffle 81 automatically rotates to above the support plate 2. When the limit shaft 21 moves upward, the torsion spring releases the torque, the lever 83 is reset, and the baffle 81 rotates back to its original position. The baffle 81 can flexibly switch between the space above the support plate 2 and the adjacent space, effectively preventing slag splashing and improving the operation stability of the equipment.

[0027] In one embodiment of the present invention, the lever 83 may also be connected to the limit shaft 21 in a sliding manner, such as Figure 10As shown, a socket 84 is provided at the end of the lever 83. The socket 84 is slidably connected to the surface of the limit shaft 21, so that the lever 83 slides along with the movement of the limit shaft 21, ensuring the synchronous movement of the lever 83 and the limit shaft 21, and realizing the rotation of the baffle 81. The method is the same as the above, and will not be specifically described here.

[0028] In an embodiment of the present invention, as Figure 11 shown, when the baffle 81 rotates above the support plate 2, the baffle 81 is inclined. The setting of the inclined baffle 81 enables the slag sputtering on its upper surface to be guided to one side of the support plate 2, so that the slag is not easily accumulated on the surface of the support plate 2 and is guided to the collection area at the bottom, reducing the cleaning difficulty, further improving the cleanliness and efficiency of the cutting process, and ensuring the long-term stable operation of the equipment.

[0029] Only some exemplary embodiments of the present invention have been described by way of illustration above. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the present invention.

Claims

1. An adjustable CNC flame cutting machine, comprising a support platform (1), a plurality of toothed support plates (2) arranged in an array are arranged on the support platform (1), rails (3) are arranged on both sides of the support platform (1), a slide table (4) is slidably connected to the rails (3), a gantry (5) is installed between the two slide tables (4), and a cutting mechanism is installed on the gantry (5), characterized in that: Each support plate (2) is capable of moving in a vertical direction, and a starter (7) is provided on one side of the slide table (4). When the cutting structure moves, the support plate (2) located below the cutting torch of the cutting mechanism moves downward with the cooperation of the starter (7), so that the support plate (2) is away from the plate to form a gap. The starter (7) comprises a bracket (71) mounted on a slide (4) or a gantry (5), a driving plate (72) being fixedly connected to one side of the bracket (71), slots (73) being provided at both ends of the driving plate (72), a V-shaped guide groove (74) being provided on a side of the driving plate (72) close to the support plate (2), and the V-shaped guide groove (74) being connected to the two slots (73), and two symmetrical inclined surfaces (75) being provided on a side of the driving plate (72) away from the support plate (2).

2. The adjustable CNC flame cutting machine according to claim 1, characterized in that: A limit shaft (21) is fixedly mounted on both ends of the support plate (2); two vertical plates (22) are mounted on the support platform (1); a first slide groove (23) is provided on the vertical plate (22) for the limit shaft (21) to slide longitudinally; and a limit assembly (6) is provided on one side of the slide platform (4) for limiting the movement of the limit shaft (21) so that the limit shaft (21) is located at the top of the first slide groove (23).

3. The adjustable CNC flame cutting machine according to claim 2, characterized in that: The limiting assembly (6) comprises a base (61), the base (61) being fixedly mounted on one side of the slide (4), a limiting column (62) being slidably connected inside the base (61), a limiting hole (63) matching the end of the limiting shaft (21) being provided on a side of the limiting column (62) away from the base (61), a first spring (64) being mounted between the base (61) and the limiting column (62), the elastic force of the first spring (64) acting on the limiting column (62) so that it has a tendency to move away from the base (61).

4. The adjustable CNC flame cutting machine according to claim 3, characterized in that: The width of the slot (73) is greater than the diameter of the limiting shaft (21); when the driving plate (72) moves, it can push the limiting column (62) to move and compress the first spring (64) through the inclined surface (75), and the limiting shaft (21) moves along the slot (73) and the V-shaped guide groove (74).

5. The adjustable CNC flame cutting machine according to claim 2, characterized in that: A sliding sleeve (24) is fixedly connected to the surface of the limiting shaft (21), and the sliding sleeve (24) is slidably connected to the first sliding groove (23).

6. The adjustable CNC flame cutting machine according to claim 5, characterized in that: A guide rod (25) is fixedly connected to the top of the sliding sleeve (24), the guide rod (25) passes through the vertical plate (22) and is slidably connected to the inner wall of the vertical plate (22), and a second spring (26) is sleeved on the guide rod (25), the elastic force of the second spring (26) acts on the guide rod (25) to make it tend to move upward.

7. The adjustable CNC flame cutting machine according to claim 2, characterized in that: A shielding member (8) is also provided on one side of the support plate (2), the shielding member (8) comprising a baffle (81), the baffle (81) being rotatably mounted on one side of the vertical plate (22) via a rotating rod (82), and when the support plate (2) moves downward, the baffle (81) rotates around a rotational connection between the baffle and the vertical plate (22) to above the support plate (2).

8. The adjustable CNC flame cutting machine according to claim 7, characterized in that: The end of the rotating rod (82) is fixedly connected to a lever (83), one end of the lever (83) is located below the limit shaft (21), and a torsion spring is installed at the rotation connection between the rotating rod (82) and the vertical plate (22), and the torsion force of the torsion spring acts on the rotating rod (82) so that the baffle plate (81) has a tendency to rotate to between two adjacent support plates (2).

9. The adjustable CNC flame cutting machine according to claim 8, characterized in that: A socket (84) is provided at the end of the shifting rod (83), and the socket (84) is slidably connected to the surface of the limiting shaft (21).

10. The adjustable CNC flame cutting machine according to claim 8, characterized in that: When the baffle plate (81) rotates to above the support plate (2), the baffle plate (81) is inclined.

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