An adjustable numerically controlled flame cutting machine

Abstract

The present invention discloses an adjustable numerically controlled flame cutting machine, which relates to the field of flame cutting machines and includes a support table. A support plate is arranged on the support table, and each support plate can move in the vertical direction. A starting member is arranged on one side of the sliding table. When the cutting mechanism moves, with the cooperation of the starting member, the support plate located below the cutting torch of the cutting mechanism moves downward, so that the support plate moves away from the plate to form a gap; the support plate below the cutting area is automatically moved downward 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 remove later. At the same 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

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 use the method of lifting the support table as a whole 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 the 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, on which a plurality of toothed support plates are arranged in an array. 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 mechanism 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.

[0005] 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.

[0006] Further, limit shafts are fixedly installed at both ends of the support plate. Two vertical plates are installed on the support table, and first sliding grooves for the longitudinal sliding of the limit shafts are opened on the vertical plates. A limit assembly is provided on one side of the sliding table, which is used to limit the movement of the limit shafts so that they are at the top of the first sliding grooves.

[0007] Further, the limiting component includes a base fixedly installed on one side of the sliding table. A limiting post 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 post away from the base. A first spring is installed between the base and the limiting post, and the elastic force of the first spring acts on the limiting post to make it tend to move away from the base.

[0008] 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 post 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.

[0009] 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.

[0010] Further, a guide rod is fixedly connected to the top of the sliding sleeve. The guide rod passes 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.

[0011] Further, a shielding member is also provided on one side of the support plate. The shielding member includes a baffle plate. The baffle plate is 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.

[0012] 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 torsional force of the torsion spring acts on the rotating rod to make it tend to rotate the baffle plate between adjacent two support plates.

[0013] 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.

[0014] Further, when the baffle plate rotates to above the support plate, the baffle plate is inclined.

[0015] Compared with the prior art, an adjustable numerical control flame cutting machine provided by the present invention has the following beneficial effects:

[0016] For 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 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;

[0017] 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 in irrelevant areas, protecting the support plate and extending the service life of the equipment. Brief Description of the Drawings

[0018] 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 in the embodiments. Obviously, the drawings in the following description 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.

[0019] Figure 1 Schematic diagram of a partial structure of an adjustable numerically controlled flame cutting machine provided by an embodiment of the present invention;

[0020] Figure 2 Provided by an embodiment of the present invention Figure 1 Schematic diagram of a partial structure;

[0021] Figure 3 Provided by an embodiment of the present invention Figure 2 Schematic diagram of a partial longitudinal section;

[0022] Figure 4 Schematic diagram of a first perspective of a driving board provided by an embodiment of the present invention;

[0023] Figure 5 Schematic diagram of a second perspective of a driving board provided by an embodiment of the present invention;

[0024] Figure 6 Schematic diagram of a structure with a guide rod and a second spring installed on a sliding sleeve provided by an embodiment of the present invention;

[0025] Figure 7 Schematic diagram of a state where a baffle is located above a support plate after moving downward provided by an embodiment of the present invention;

[0026] Figure 8 Provided by an embodiment of the present invention Figure 7 Schematic diagram of a partial longitudinal section;

[0027] Figure 9 Schematic diagram of a state where a baffle rotates to one side of a support plate provided by an embodiment of the present invention;

[0028] Figure 10 Schematic diagram of a structure when a dial rod is provided with a socket provided by an embodiment of the present invention;

[0029] Figure 11 Schematic diagram of an inclined state of a baffle (when located above a support plate) provided by an embodiment of the present invention.

[0030] Explanation of Reference Numerals:

[0031] 1. Support platform; 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. Driving plate; 73. Slot; 74. V-shaped guide groove; 75. Inclined surface; 8. Shielding member; 81. Baffle; 82. Rotating rod; 83. Poking rod; 84. Socket. Detailed implementation manners

[0032] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0033] Please refer to Figure 1 - Figure 11 , an adjustable numerical control flame cutting machine, including a support platform 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 platform 1, a slide table 4 is slidably connected to the tracks 3, a gantry 5 is installed between the two slide tables 4, and a cutting mechanism (not shown in the figure) is installed on the gantry 5;

[0034] Each support plate 2 can move in the vertical direction. A starting member 7 is arranged on one side of the slide table 4. When the cutting mechanism moves, under the cooperation of the starting member 7, the support plate 2 located below the cutting torch of the cutting mechanism moves downward, so that the support plate 2 is away from the plate to form a gap.

[0035] In an embodiment of the present invention, a specific example of the movement of the support plate 2 is provided (not shown in the figure). 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, is installed at the bottom of the gantry 5 or on one side of the slide 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;

[0036] Taking the proximity switch as an example, an inductive proximity sensor is installed on one side of the sliding table 4 or the gantry 5, with a detection distance of 2 - 15 mm. Metal trigger blocks (matched with the sensor detection material) are installed at the corresponding positions of each support plate 2. It also includes a controller (such as a PLC or a single-chip microcomputer) arranged on one side of the support table 1. After receiving the signal, it controls the cylinder, hydraulic cylinder or electric telescopic rod to drive the support plate 2 to rise and fall. Specifically, in implementation:

[0037] All the support plates 2 are at the same height position, and the proximity sensor is 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, 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 sensor detection range, the sensor output returns to the initial state, and after the controller detects the disappearance of the signal, it immediately or with a delay resets the current support plate 2;

[0038] On the basis of the above method, when the slag generated during the sheet cutting 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 adhesion amount and 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.

[0039] 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. First chutes 23 for the longitudinal sliding of the limit shafts 21 are opened on the vertical plates 22. A limit component 6 is arranged on one side of the sliding table 4, which is used to limit the movement of the limit shafts 21 to make them at the top of the first chutes 23;

[0040] The limit component 6 includes a base 61, which is fixedly installed on one side of the sliding table 4. A limit post 62 is slidably connected inside the base 61. A limit hole 63 adapted to the end of the limit shaft 21 is opened on the side of the limit post 62 away from the base 61. A first spring 64 is installed between the base 61 and the limit post 62, and the elastic force of the first spring 64 acts on the limit post 62 to make it have a tendency to move away from the base 61;

[0041] As Figure 3As shown, under normal conditions, each limiting shaft 21 is located within the limiting hole 63. Under the action of the limiting assembly 6, the limiting shaft 21 is located at the top of the first chute 23, and each support plate 2 will be at the same height position. At this time, each support plate 2 is in a normal working state, and the staff can stably place the plate to be cut on the support plate 2;

[0042] The starting member 7 includes a bracket 71 installed 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 opened 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 opened 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.

[0043] The specific implementation scenario when the starting member 7 moves is as follows:

[0044] 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. This limiting shaft 21 moves into the slot 73. At this time, even if the limiting assembly 6 releases the restriction on this limiting shaft 21, this limiting shaft 21 will not fall, but is restricted at the original height position by the slot 73;

[0045] During the limit release stage, as the driving plate 72 moves, one of its inclined surfaces 75 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 to the slot 73 of the driving plate 72;

[0046] 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 then 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;

[0047] 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, and under the elastic force of the first spring 64, the limiting column 62 returns to its original position, and the limiting shaft 21 re-enters the limiting hole 63, and the support plate 2 is stabilized at the original height position to support the plate;

[0048] 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 are such that the support plate 2 below the cutting position moves downward in a timely manner. The longitudinal height of the V-shaped groove determines the distance when the limit shaft 21 and the support plate 2 move downward. 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 during the cutting of thicker plates, more molten metal is generated. When the high-pressure oxygen flow blows the slag to the bottom, it has greater kinetic energy, 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 greater downward movement distance is required, and for thin plates, the distance can be appropriately reduced.

[0049] 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;

[0050] 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 passes through 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 role 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 to reduce the resistance when the limit shaft 21 moves.

[0051] 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, forming a certain gap between the support plate 2 and the plate, so that the slag does 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;

[0052] At the same time, the downward movement of the support plate 2 is synchronized with the movement trajectory of the cutting torch in real time. Only the support plate 2 below the current cutting position is avoided, preventing frequent lifting and lowering in irrelevant areas, protecting the support plate 2 and extending the service life of the equipment;

[0053] 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 driving 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 frequency of equipment shutdown for slag cleaning and lowers the maintenance cost;

[0054] 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)

[0055] 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;

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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, realizing the rotation of the baffle 81. The method is the same as above and will not be specifically described here.

[0060] 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 makes the slag sputtered on its upper surface 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.

[0061] Only some exemplary embodiments of the present invention have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. 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 numerically controlled flame cutting machine, comprising 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 is installed on the gantry (5), characterized in that: Each support plate (2) can move vertically. A starting member (7) and a limiting assembly (6) are provided on one side of the sliding table (4). When the cutting mechanism moves, with the cooperation of the starting member (7), the support plate (2) located below the cutting torch of the cutting mechanism moves downward, so that the support plate (2) moves away from the plate to form a gap. The starting member (7) includes a bracket (71) installed on the sliding table (4) or the gantry (5). A driving plate (72) is fixedly connected to one side of the bracket (71). Slots (73) are opened at both ends of the driving plate (72). A V-shaped guide groove (74) is opened 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 symmetrical inclined surfaces (75) on the side of the driving plate (72) away from the support plate (2). The limiting assembly (6) includes a base (61). The base (61) is fixedly installed on one side of the sliding table (4). A limiting post (62) is slidably connected in the base (61). A limiting hole (63) adapted to the end of the limiting shaft (21) is opened on the side of the limiting post (62) away from the base (61). A first spring (64) is installed between the base (61) and the limiting post (62). The elastic force of the first spring (64) acts on the limiting post (62) to make it tend to move away from the base (61). 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 post (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).

2. The adjustable numerical control flame cutting machine according to claim 1, characterized in that, Limiting shafts (21) are fixedly installed at both ends of the support plate (2). Two vertical plates (22) are installed on the support table (1). First sliding grooves (23) for the longitudinal sliding of the limiting shafts (21) are opened on the vertical plates (22).

3. An adjustable numerically controlled 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). The sliding sleeve (24) is slidably connected with the first sliding groove (23).

4. An adjustable numerically controlled flame cutting machine according to claim 3, characterized in that, A guide rod (25) is fixedly connected to the top of the sliding sleeve (24). The guide rod (25) penetrates through the vertical plate (22) and is slidably connected with 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.

5. An adjustable numerically controlled flame cutting machine according to claim 2, wherein, A shielding member (8) is further provided on one side of the support plate (2). The shielding member (8) includes a baffle (81). The baffle (81) is rotatably installed 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 its rotating connection with the vertical plate (22) to above the support plate (2).

6. The adjustable numerical control flame cutting machine according to claim 5, wherein, A lever (83) is fixedly connected to the end of the rotating rod (82). One end of the lever (83) is located below the limiting shaft (21). A torsion spring is installed at the rotational connection of the rotating rod (82) and the vertical plate (22). The torsion force of the torsion spring acts on the rotating rod (82) to make the baffle (81) tend to rotate between two adjacent support plates (2).

7. An adjustable numerically controlled flame cutting machine according to claim 6, wherein, A socket (84) is formed at the end of the lever (83), and the socket (84) is slidably connected to the surface of the limiting shaft (21).

8. An adjustable numerically controlled flame cutting machine according to claim 6, characterized in that, When the baffle (81) rotates above the support plate (2), the baffle (81) is inclined.

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