A metal plate plasma cutting device

Abstract

The present application relates to the technical fields of metal plate plasma cutting, in particular to a kind of metal plate plasma cutting device, it includes material placing table, the upper surface of material placing table is equipped with plasma cutting head that can move front and back and left and right, material placing table is located plasma cutting head downside and is equipped with conveying cylinder, conveying cylinder downside is equipped with processing mechanism, the processing mechanism includes receiving box and processing box, processing box is located receiving box upside, processing box both ends are fixed with sand storage box, processing box inside is equipped with multiple partition plates, partition plate rear end is circular bar shape rotation and is penetrated in processing box rear side inner wall, partition plate rear end is fixed with linkage plate, processing box rear side is equipped with elastic lifting plate.The present application can be through in power vibration structure through receiving box drive processing box left and right shake, make sand grain in sand storage box enter processing box inside, then sand grain is contacted with the board material on the upside of partition plate when following processing box shake and shake deburring treatment.

Description

Technical Field

[0001] This invention relates to the technical field of plasma cutting of metal sheets, and in particular to a plasma cutting device for metal sheets. Background Technology

[0002] Plasma cutting is a machining method that uses the heat of a high-temperature plasma arc to melt part or part of the metal at the cut of a workpiece, and then uses the momentum of high-speed plasma to remove the molten metal to form a cut. Currently, plasma cutting machines are widely used in industries such as automotive, pressure vessels, chemical machinery, nuclear industry, general machinery, and construction machinery.

[0003] Chinese patent CN116851892A discloses a feeding device for a plasma cutting machine, relating to the field of plasma cutting technology. The feeding device includes a worktable, a cutting mechanism, and a clamping mechanism. The clamping mechanism includes a blocking assembly and a clamping assembly. The clamping assembly includes a clamping drive assembly, a base, support seats, and clamping rods. The clamping drive assembly is installed in a groove in the worktable and is drivenly connected to the base. The base is slidably connected to the worktable via the groove. Multiple support seats are fixedly connected to the side of the base away from the clamping drive assembly. Multiple clamping rods are fixedly installed on the worktable. The blocking assembly includes a blocking drive assembly and a backing plate. The blocking drive assembly is installed on the base near the discharge end of the worktable and is drivenly connected to the backing plate. The metal sheet is initially positioned by a support plate, and then further lifted and clamped by a clamping assembly to ensure processing accuracy. However, the above-mentioned related technologies have the following drawbacks: when using a plasma head to cut a specific shape from the metal sheet, the cut shape will separate from the raw material. Burrs will be present at the edges of the separated shaped sheet. The burrs are easy to remove when they are still hot after cutting. In the existing technology, deburring is usually performed separately after cutting. This makes it difficult to remove the burrs after they have cooled down. Therefore, a metal sheet plasma cutting device is proposed that can remove burrs from the cut sheet in a timely manner. Summary of the Invention

[0004] In order to promptly deburr the sheet material cut by the plasma cutting head, this invention provides a plasma cutting device for metal sheets.

[0005] The present invention provides a plasma cutting device for metal sheets, which adopts the following technical solution: it includes a material placement platform, on the upper surface of the material placement platform is a plasma cutting head that can move back and forth and left and right, a material transfer cylinder is installed on the material placement platform below the plasma cutting head, and a processing mechanism is provided on the lower side of the material transfer cylinder.

[0006] The processing mechanism includes a receiving box and a processing box. The processing box is located on the upper side of the receiving box. Sand storage boxes are fixed at both ends of the processing box. Multiple partition plates are provided inside the processing box. The rear end of the partition plate is in the shape of a round rod and rotates through the inner wall of the rear side of the processing box. The left and right sides of the processing box are respectively connected to two sand storage boxes. A linkage plate is fixed at the rear end of the partition plate. The linkage plate is elastically connected to the back of the processing box. An elastic lifting plate is provided at the rear side of the processing box. A side block is elastically rotatably connected to the lower rear end of the elastic lifting plate. The side block is located at the rear side of the linkage plate. Sand particles are placed inside the sand storage box.

[0007] The receiving box has notched rings fixed on both the front and rear sides of the processing box. The notched ring on the front side of the processing box is equipped with a power structure that controls the intermittent reciprocating rotation of the processing box around the axis of the notched ring. The material placement platform is equipped with a power vibration structure that controls the reciprocating left and right movement of the receiving box. The rear side of the processing box is equipped with a transmission structure that controls the intermittent reciprocating up and down movement of the side blocks.

[0008] Optionally, rod-shaped meshes are installed on the left and right sides of the processing box and on the upper side of each partition plate, and a sand storage trough is opened inside the sand storage box on one side of each partition plate.

[0009] Optionally, a sand-lifting plate is provided inside the sand storage tank. The end of the sand-lifting plate near the processing box is rotatably connected to the sand storage box, and the sand particles are located on the upper side of the sand-lifting plate inside the sand storage tank.

[0010] A spur gear is coaxially fixed at the front end of the sand lifting plate and the sand storage box connecting shaft. A toothed plate meshes with the spur gear on the side near the processing box. A rib is slidably connected to the front side of each sand storage box. The rib is elastically connected to the sand storage box. The toothed plate and the rib located on the front side of the same sand storage box are fixed together.

[0011] A protrusion is fixed at the lowest end of the inner ring surface of the notched ring located on the front side of the processing box, and the lower end of the rib rod slides in contact with the inner ring surface of the notched ring.

[0012] Optionally, the end of the sand-lifting plate away from the processing box slides in contact with the inner wall of the sand storage tank, and the side of the sand storage tank away from the processing box is arc-shaped. The axis of the arc groove of the sand storage tank is coaxially arranged with the connecting shaft of the sand-lifting plate and the sand storage box on the corresponding inner side.

[0013] Optionally, the dynamic vibration structure includes a wire drum and a reciprocating screw, the reciprocating screw being threaded into the inside of the wire drum, the wire drum being fixed to the receiving box, and the reciprocating screw being connected to the material placement platform.

[0014] Optionally, the receiving box is slidably connected to crossbars on both the front and rear sides, and both ends of the crossbars are fixed to the material placement platform.

[0015] Optionally, the transmission structure includes a reciprocating screw shaft, which is rotatably connected to the processing box. A bevel gear is fixed at the lower end of the reciprocating screw shaft, and a side block is threaded onto the outer surface of the reciprocating screw shaft.

[0016] Two arc-shaped bevel gear rings are fixed on the inner ring surface of the notch ring located at the rear of the processing box. The two arc-shaped bevel gear rings are symmetrically distributed on the left and right sides of the processing box, and the inner ring surface of the arc-shaped bevel gear rings is tangent to the bevel gear.

[0017] Optionally, a corner block is fixed to the lower surface of the linkage plate, and the corner block is in contact with the processing box.

[0018] Optionally, a material collection box is connected to the upper end of the processing box. The upper end of the material collection box is flared, the upper opening of the material transfer cylinder is larger than the lower opening of the material transfer cylinder, and the lower end of the material transfer cylinder is located inside the material collection box.

[0019] In summary, the present invention has the following beneficial technical effects:

[0020] 1. This invention, by setting up components such as a sand storage box and a partition plate, allows the cut sheet material to fall from the feed cylinder onto the upper part of the partition plate inside the processing box. The dynamic vibration structure drives the processing box to sway left and right through the receiving box, causing the sand particles in the sand storage box to enter the inner side of the processing box. Then, as the processing box sways, the sand particles come into contact with the sheet material on the upper part of the partition plate for deburring treatment.

[0021] 2. This invention, by setting up components such as sand storage tanks, sand lifting plates, protrusions, and spur gears, allows the processing box to reciprocate around the notch ring axis. As the processing box rotates back and forth, the ribs rotating to the lower side of the processing box gradually come into contact with the protrusions, pushing the ribs to move upward relative to the sand storage box. The moving toothed plate meshes with the spur gears, which can drive the sand lifting plates to rotate, increasing the space on the upper side of the sand lifting plates. This allows sand particles in the processing box and the sand storage tank on the upper side of the processing box to move into the sand storage tank on the lower side. As the partition plate rotates downward, it prevents the sand from rotating downward with the plate material. When the processing box is in a vertical state, both ribs disengage from the protrusions, and the sand lifting plates on both sides of the processing box are arranged in an inverted V-shape, allowing the sand particles in the sand storage tanks on both sides to move into the processing box, ensuring that the sand particles are in full contact with the plate material.

[0022] 3. By setting up a material collection box and a material transfer cylinder, the lower end of the material transfer cylinder is located inside the material collection box while the processing box rotates around the notch ring axis and the processing box sways left and right with the receiving box, ensuring that the sheet material cut by the plasma cutting head will not fall outside the processing box. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present invention;

[0024] Figure 2 This is a rear view schematic diagram of some structures in an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the distribution of the material transfer cylinder and the material collection box in an embodiment of the present invention;

[0026] Figure 4This is a front view schematic diagram of some structures in an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the distribution of the sand lifting plate and the sand storage tank in an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the connection between the partition plate and the linkage plate in an embodiment of the present invention;

[0029] Figure 7 This is a side view schematic diagram of some structures in an embodiment of the present invention;

[0030] Figure 8 This is an embodiment of the present invention. Figure 4 Enlarged schematic diagram of the structure at point A in the middle.

[0031] Reference numerals: 1. Material placement platform; 2. Plasma cutting head; 3. Material transfer cylinder; 4. Processing mechanism; 41. Receiving box; 42. Processing box; 421. Rod-shaped mesh; 43. Sand storage box; 431. Sand storage trough; 432. Sand lifting plate; 433. Spur gear; 434. Toothed plate; 435. Rib; 436. Protrusion; 44. Divider plate; 45. Linkage plate; 46. Elastic lifting plate; 47. Side block; 48. Dynamic vibration structure; 481. Wire drum; 482. Dynamic reciprocating screw; 483. Crossbar; 49. Transmission structure; 491. Reciprocating screw shaft; 492. Arc-shaped bevel gear ring; 493. Bevel gear; 410. Dynamic structure; 411. Notched ring; 412. Fixed angle block; 5. Material collection box. Detailed Implementation

[0032] The following is in conjunction with the appendix Figures 1-8 The present invention will be described in further detail below.

[0033] This invention discloses a plasma cutting device for metal sheets. For example... Figures 1-8 As shown, the device includes a material placement platform 1. A plasma cutting head 2 that can move back and forth and left and right is installed on the upper surface of the material placement platform 1. The plasma cutting head 2 can spray plasma cutting streams to cut a specific shape of sheet material placed below by moving back and forth and left and right. A transfer cylinder 3 is installed on the material placement platform 1 below the plasma cutting head 2. The part of the material placement platform 1 below the plasma cutting head 2 does not have a blocking structure to prevent the sheet material from falling, so that the cut sheet material can fall into the transfer cylinder 3. A processing mechanism 4 is provided on the lower side of the transfer cylinder 3.

[0034] The processing mechanism 4 includes a receiving box 41 and a processing box 42. The processing box 42 is located on the upper side of the receiving box 41. The front of the receiving box 41 is open, allowing the sheet material inside to be removed. A material gathering box 5 is connected to the upper end of the processing box 42. The upper end of the material gathering box 5 is flared. The upper opening of the material transfer cylinder 3 is larger than the lower opening of the material transfer cylinder 3. The lower end of the material transfer cylinder 3 is located inside the material gathering box 5. Sheet material falling into the material transfer cylinder 3 can enter the processing box 42 through the material gathering box 5. Sand storage boxes 43 are fixed at both the left and right ends of the processing box 42. Multiple partition plates 44 are provided inside the processing box 42. Sheet material falling into the processing box 42 first falls onto the uppermost partition plate 44.

[0035] The rear end of the partition plate 44 is a round rod that rotates through the inner wall of the rear side of the processing box 42, so that no gap is formed between the partition plate 44 and the processing box 42 when rotating. The left and right sides of the processing box 42 are respectively connected to two sand storage boxes 43. A rod-shaped mesh 421 is installed on the left and right sides of the processing box 42 and on the upper side of each partition plate 44. The rod-shaped mesh 421 can block the plate material when the sand particles pass through, so that the plate material will not enter the sand storage box 43. A sand storage trough 431 is opened inside the sand storage box 43 on one side of each partition plate 44. A sand lifting plate 432 is provided inside the sand storage trough 431. The end of the sand lifting plate 432 near the processing box 42 is rotatably connected to the sand storage box 43. The sand particles are located on the upper side of the sand lifting plate 432 inside the sand storage trough 431.

[0036] The end of the sand lifting plate 432 away from the treatment box 42 slides in contact with the inner wall of the sand storage tank 431. The side of the sand storage tank 431 away from the treatment box 42 is arc-shaped. The arc groove axis of the sand storage tank 431 is coaxially set with the connecting shaft of the sand lifting plate 432 and the sand storage box 43 on the corresponding inner side. When the sand lifting plate 432 rotates upward, the sand particles in the sand storage tank 431 can enter the upper side of the inner partition plate 44 of the treatment box 42 through the rod-shaped mesh 421.

[0037] A linkage plate 45 is fixed to the rear end of the partition plate 44. A fixed corner block 412 is fixed to the lower surface of the linkage plate 45. The fixed corner block 412 contacts the processing box 42. The linkage plate 45 is elastically connected to the back of the processing box 42. The bottom surface of the linkage plate 45 is connected to the processing box 42 by a spring, which has the tendency to pull the linkage plate 45 downward and rotate it closer to the processing box 42. When the fixed corner block 412 contacts the processing box 42, the partition plate 44 is in a horizontal position. An elastic lifting plate 46 is provided on the rear side of the processing box 42. A side block 47 is elastically rotatably connected to the lower rear end of the elastic lifting plate 46. The elastic lifting plate 46 and the side block 47 are elastically connected by a torsion spring, so that the elastic lifting plate 46 has the tendency to be in a horizontal position. The side block 47 is located on the rear side of the linkage plate 45. The sand storage box 43 contains With sand particles in place, when the side block 47 drives the elastic lifting plate 46 to move upward, the elastic lifting plate 46 pushes the linkage plate 45 upward through contact with it, causing the corresponding partition plate 44 to rotate downward. After the partition plate 44 and the linkage plate 45 can no longer rotate, when the elastic lifting plate 46 continues to move upward, the elastic lifting plate 46 is misaligned with the contacted linkage plate 45 through elastic deformation. During the upward movement of the side block 47, the partition plate 44 can be pushed downward to rotate once from bottom to top, so that the plate material on the upper side of the partition plate 44 can fall downward in sequence. When the side block 47 drives the elastic lifting plate 46 to move downward, after the elastic lifting plate 46 contacts the linkage plate 45, the elastic lifting plate 46 is misaligned with the linkage plate 45 through relative elastic rotation relative to the side block 47.

[0038] The upper end of the receiving box 41 is fixed with notched rings 411 on both the front and rear sides of the processing box 42. The notched ring 411 on the front side of the processing box 42 is equipped with a power structure 410 that controls the intermittent reciprocating rotation of the processing box 42 around the axis of the notched ring 411. The power structure 410 includes a motor and a central shaft. The central shaft is rotatably connected to the notched ring 411 on the front side. The central shaft is coaxially mounted with the output end of the motor. The motor is mounted on the front side of the notched ring 411. The motor can drive the processing box 42 to reciprocate intermittently through the central shaft.

[0039] A spur gear 433 is coaxially fixed at the front end of the connecting shaft between the sand lifting plate 432 and the sand storage box 43. A toothed plate 434 meshes with the spur gear 433 on the side near the processing box 42. A rib 435 is slidably connected to the front side of each sand storage box 43. The rib 435 is elastically connected to the sand storage box 43. The toothed plate 434 and the rib 435 on the front side of the same sand storage box 43 are fixed together. A roller is rotatably connected to the contact end of the rib 435 and the notched ring 411. When the processing box 42 rotates, the roller can be driven to rotate on the inner ring surface of the notched ring 411 through the rib 435. A protrusion 436 is fixed at the lowest end of the inner ring surface of the notched ring 411 on the front side of the processing box 42. The lower end of the rib 435 is connected to the notched ring. The inner ring surface of 411 slides in contact. When the rib 435 is not in contact with the protrusion 436, the rib 435, under the elastic connection with the sand storage box 43, drives the sand lifting plates 432 on both sides of the partition plate 44 to be distributed in an inverted V-shape. When the rib 435 moves to the protrusion 436, it pushes the rib 435 to move upward relative to the sand storage box 43. The moving toothed plate 434 meshes with the spur gear 433, which can drive the sand lifting plate 432 to rotate downward, increasing the space on the upper side of the sand lifting plate 432. This allows the sand particles in the processing box 42 and the sand storage tank 431 on the upper side of the processing box 42 to move into the lower sand storage tank 431. This prevents the sand and gravel from rotating downward along with the plate material while the partition plate 44 rotates downward.

[0040] The material placement platform 1 is equipped with a dynamic vibration structure 48 that controls the reciprocating left and right movement of the receiving box 41. The dynamic vibration structure 48 includes a screw 481 and a reciprocating screw 482. The reciprocating screw 482 is threaded into the inside of the screw 481. The screw 481 is fixed to the receiving box 41, and the reciprocating screw 482 is connected to the material placement platform 1.

[0041] The receiving box 41 is slidably connected to the front and rear sides with crossbars 483. Both ends of the crossbars 483 are fixed to the material placement platform 1. The material placement platform 1 is equipped with a motor that controls the rotation of the power reciprocating screw 482. When the power reciprocating screw 482 rotates, it can drive the receiving box 41 and the processing box 42 to sway left and right by meshing with the screw drum 481. When the processing box 42 sways, it can drive the sand particles inside the processing box 42 to move relative to the plate material, so that the sand material can remove the burrs of the uncooled plate material in time.

[0042] A transmission structure 49 for intermittently reciprocating up and down movement of a control block 47 is installed on the rear side of the processing box 42.

[0043] The transmission structure 49 includes a reciprocating screw 491, which is rotatably connected to the processing box 42. A bevel gear 493 is fixed at the lower end of the reciprocating screw 491, and a side block 47 is threaded onto the outer surface of the reciprocating screw 491.

[0044] Two arc-shaped bevel tooth rings 492 are fixed on the inner ring surface of the notched ring 411 located at the rear side of the treatment box 42. The two arc-shaped bevel tooth rings 492 are symmetrically distributed on the left and right sides of the treatment box 42. The inner ring surface of the arc-shaped bevel tooth rings 492 is tangent to the bevel gear 493. After the rib 435 contacts the protrusion 436, the bevel gear 493 meshes with the arc-shaped bevel tooth rings 492 to ensure that the partition plate 44 will only rotate after the sand particles enter the sand storage tank 431 through the rod-shaped mesh 421.

[0045] The working principle is as follows: The plate to be cut is placed on the material placement table 1. The plasma cutting head 2 cuts the plate while moving. The cut plate falls through the transfer cylinder 3 onto the uppermost partition plate 44 inside the processing box 42. Then, when the side block 47 drives the elastic lifting plate 46 to move upward, the elastic lifting plate 46 pushes the linkage plate 45 from bottom to top, causing the partition plates 44 distributed from bottom to top to rotate in sequence, so that the plate falling onto the uppermost partition plate 44... As the partition plate 44 rotates, the material falls downwards in sequence. With the material falling continuously from the upper side, there is material on the upper side of each partition plate 44. The dynamic vibration structure 48 drives the processing box 42 to shake left and right through the receiving box 41, so that the sand particles in the sand storage box 43 enter the inner side of the processing box 42. Then, as the processing box 42 shakes, the sand particles shake relative to the material on the upper side of the partition plate 44 to remove burrs. After the material falls from the upper side of the bottom partition plate 44, it falls into the receiving box 41.

[0046] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A plasma cutting device for metal sheets, comprising a material placement stage (1), characterized in that: The material placement platform (1) is equipped with a plasma cutting head (2) that can move back and forth and left and right. The material placement platform (1) is equipped with a transfer cylinder (3) located below the plasma cutting head (2). A processing mechanism (4) is provided on the lower side of the transfer cylinder (3). The processing mechanism (4) includes a receiving box (41) and a processing box (42). The processing box (42) is located on the upper side of the receiving box (41). Sand storage boxes (43) are fixed at both the left and right ends of the processing box (42). Multiple partition plates (44) are provided inside the processing box (42). The rear end of the partition plate (44) is rotatably inserted through the rear inner wall of the processing box (42) in the shape of a round rod. The left and right sides of the processing box (42) are respectively connected to two sand storage boxes (43). A linkage plate (45) is fixed at the rear end of the partition plate (44). The linkage plate (45) is elastically connected to the back of the processing box (42). An elastic lifting plate (46) is provided on the rear side of the processing box (42). A side block (47) is elastically rotatably connected to the lower side of the rear end of the elastic lifting plate (46). The side block (47) is located on the rear side of the linkage plate (45). Sand particles are placed inside the sand storage box (43). The receiving box (41) has notched rings (411) fixed on both the front and rear sides of the processing box (42) at its upper end. The notched ring (411) on the front side of the processing box (42) is equipped with a power structure (410) that controls the intermittent reciprocating rotation of the processing box (42) around the axis of the notched ring (411). The material placement platform (1) is equipped with a power vibration structure (48) that controls the reciprocating left and right movement of the receiving box (41). The rear side of the processing box (42) is equipped with a transmission structure (49) that controls the intermittent reciprocating up and down movement of the side block (47).

2. The plasma cutting device for metal sheets according to claim 1, characterized in that: The processing box (42) is equipped with rod-shaped mesh (421) on the left and right sides and on the upper side of each partition plate (44), and the sand storage box (43) is provided with a sand storage trough (431) on one side of each partition plate (44).

3. The plasma cutting device for metal sheets according to claim 2, characterized in that: A sand-lifting plate (432) is provided inside the sand storage tank (431). The end of the sand-lifting plate (432) near the processing box (42) is rotatably connected to the sand storage box (43). The sand particles are located on the upper side of the sand-lifting plate (432) inside the sand storage tank (431). The lifting plate (432) and the front end of the connecting shaft of the sand storage box (43) are coaxially fixed with a spur gear (433). The spur gear (433) is meshed with a toothed plate (434) on the side near the processing box (42). Each sand storage box (43) is slidably connected with a rib (435) on the front side. The rib (435) is elastically connected to the sand storage box (43). The toothed plate (434) and the rib (435) located on the front side of the same sand storage box (43) are fixed together. A protrusion (436) is fixed at the lowest end of the inner ring surface of the notched ring (411) located on the front side of the processing box (42), and the lower end of the rib (435) slides in contact with the inner ring surface of the notched ring (411).

4. The plasma cutting device for metal sheets according to claim 3, characterized in that: The end of the sand lifting plate (432) away from the processing box (42) slides in contact with the inner wall of the sand storage tank (431). The side of the sand storage tank (431) away from the processing box (42) is arc-shaped. The arc groove axis of the sand storage tank (431) is coaxially set with the connecting shaft of the sand lifting plate (432) and the sand storage box (43) on the corresponding inner side.

5. The plasma cutting device for metal sheets according to claim 1, characterized in that: The dynamic vibration structure (48) includes a wire drum (481) and a dynamic reciprocating screw (482). The dynamic reciprocating screw (482) is threaded into the inside of the wire drum (481). The wire drum (481) is fixed to the receiving box (41), and the dynamic reciprocating screw (482) is connected to the material placement platform (1).

6. The plasma cutting device for metal sheets according to claim 5, characterized in that: The receiving box (41) is slidably connected to crossbars (483) on both the front and rear sides, and both ends of the crossbars (483) are fixed to the material placement platform (1).

7. The plasma cutting device for metal sheets according to claim 1, characterized in that: The transmission structure (49) includes a reciprocating screw shaft (491), which is rotatably connected to the processing box (42). A bevel gear (493) is fixed at the lower end of the reciprocating screw shaft (491), and a side block (47) is threaded onto the outer surface of the reciprocating screw shaft (491). Two arc-shaped bevel gear rings (492) are fixed on the inner ring surface of the notch ring (411) located on the rear side of the processing box (42). The two arc-shaped bevel gear rings (492) are symmetrically distributed on the left and right sides of the processing box (42), and the inner ring surface of the arc-shaped bevel gear ring (492) is tangent to the bevel gear (493).

8. The plasma cutting device for metal sheets according to claim 1, characterized in that: A fixed angle block (412) is fixed on the lower surface of the linkage plate (45), and the fixed angle block (412) is in contact with the processing box (42).

9. The plasma cutting device for metal sheets according to claim 1, characterized in that: The processing box (42) is connected to the upper end of the material collection box (5), the upper end of the material collection box (5) is flared, the upper opening of the material transfer cylinder (3) is larger than the lower opening of the material transfer cylinder (3), and the lower end of the material transfer cylinder (3) is located inside the material collection box (5).

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