A laser cutting machine for metal frames of mounted paintings with dust removal structure

Abstract

The invention discloses a laser cutting machine for mounting a metal frame of a painting with a dust removal structure, which belongs to the technical field of laser cutting and comprises a workbench and a gantry which can be moved along the length direction of the workbench, a movable laser cutting head is installed on the gantry, a plurality of placement blocks are evenly arranged on the upper surface of the workbench along the length direction, placement grooves are provided on the placement blocks, an air suction purification mechanism is arranged on the gantry, the air suction purification mechanism comprises two air suction pipes, one end of the two air suction pipes respectively passes through the two sides of the gantry and is connected with an air suction hood, and a circular dustproof net is arranged on the side where the two air suction hoods are close to each other; during cutting, the invention can effectively adsorb and purify harmful gases generated by cutting as the cutting direction is different, and recover metal dust, thereby reducing pollution to equipment and the environment and reducing waste of resources.

Description

Technical Field

[0001] The invention relates to the technical field of laser cutting, and in particular to a laser cutting machine for metal outer frames of mounted paintings with a dust removal structure. Background Art

[0002] The main materials for the outer frames of mounted paintings are aluminum alloy, stainless steel, solid wood and PS. Aluminum alloy is widely used in the outer frames of mounted paintings due to its advantages such as durability, moisture-proof and rust-proof, and beautiful appearance. The utilization rate accounts for more than 70%. In the manufacturing process of metal outer frames, aluminum alloy pipes need to be cut, and currently laser cutting machines are mainly used for cutting.

[0003] Laser cutting machines use high-energy-density laser beams to precisely heat materials to melt, vaporize or burn them. Currently, during the laser beam cutting process, the high-energy laser beam interacts with the metal material, causing the material surface to melt and vaporize rapidly, generating harmful gases and metal vapor. The metal vapor will condense into tiny metal dust and sputter into the air. In addition, laser cutting machines are equipped with jet nozzles, which use auxiliary gases to blow the generated pollutants away from the cutting area. These auxiliary gases will accelerate the condensation and solidification of metal vapor and increase the diffusion range of metal dust. The current conventional treatment method is to wear personal protective equipment and keep the work area ventilated to reduce the harm of dust to the human body, but these dusts will still pollute the equipment and the environment, and metal dust has a certain recycling value, resulting in a waste of resources. Summary of the invention

[0004] The purpose of the present invention is to provide a laser cutting machine for mounting metal frames with a dust removal structure to solve the following technical problems: the current conventional treatment method is to wear personal protective equipment and keep the working area ventilated to reduce the harm of dust to the human body, but these dusts will still pollute the equipment and the environment, and metal dust has a certain recycling value, resulting in a waste of resources.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A laser cutting machine for metal outer frames of mounted paintings with a dust removal structure, comprising a workbench and a gantry that can move along the length direction of the workbench, a movable laser cutting head is installed on the gantry, a plurality of placement blocks are evenly arranged on the upper surface of the workbench along the length direction, placement slots are provided on the placement blocks, an air suction purification mechanism is arranged on the gantry, the air suction purification mechanism comprises two air suction pipes, one end of the two air suction pipes respectively passes through the two sides of the gantry and is connected to an air suction hood, and a circular dustproof net is arranged on the side close to the two air suction hoods;

[0007] A partition box is provided on the air intake pipe, a partition is movably provided between the top wall and the bottom wall of the partition box, ventilation holes are provided on the partition, and a driving mechanism is provided between the laser cutting head and the partitions on both sides, so that the partitions are raised and lowered as the laser cutting head moves;

[0008] Collection boxes are arranged on both sides of the gantry.

[0009] As a further solution of the present invention: the driving mechanism includes a moving frame fixed on the top of the partition, racks are provided on the inner walls on both sides of the moving frame, mounting rods are provided on both sides of the gantry, a first rotating shaft is rotatably installed on the mounting rod close to the side wall of the moving frame, a fan gear and a ratchet are installed on the first rotating shaft, a driving rod is provided on both sides of the laser cutting head, a plurality of pawls are rotatably installed on the lower surface of the driving rod along the length direction, a spring is connected to the pawl, one end of the spring is connected to the driving rod, and a plurality of limit blocks are evenly provided on the lower surface of the driving rod along the length direction, and the plurality of limit blocks are respectively located on one side of the plurality of pawls.

[0010] As a further solution of the present invention: support rods are provided on both sides of the gantry, and a U-shaped block is fixed at one end of the two support rods. Both sides of the dustproof net outer frame are located in the U-shaped block, and rubber strips are symmetrically arranged in the U-shaped block.

[0011] As a further solution of the present invention: a second rotating shaft is rotatably installed in the U-shaped block, one end of the second rotating shaft is fixedly connected to the outer frame of the dustproof net, and a plurality of push blocks are arranged on the lower surface of the driving rod.

[0012] As a further solution of the present invention: tracks are symmetrically arranged on the workbench, a slider is slidably connected in the track, and the slider is fixedly connected to the bottom end of the gantry.

[0013] As a further solution of the present invention: the air intake purification mechanism includes a mounting frame fixed on the top of the gantry, a purification box is provided on the mounting frame, the purification box is filled with adsorbent, one end of the two air intake pipes are connected to the purification box, the top of the purification box is connected to an air outlet pipe, and the air outlet pipe is connected to an air pump.

[0014] As a further solution of the present invention: a motor and a support block are installed on the top of the gantry, the output shaft of the motor is connected to a reciprocating screw, one end of the reciprocating screw is rotatably connected to the support block, a T-shaped moving block is threadedly connected to the reciprocating screw, a rectangular through hole is opened on the top of the gantry, and one end of the T-shaped moving block passes through the rectangular through hole and is fixedly connected to the laser cutting head;

[0015] As a further solution of the present invention: both sides of the gantry are provided with sockets.

[0016] Beneficial effects of the present invention:

[0017] (1) The present invention provides an air suction purification mechanism, a partition box, a partition plate, a driving mechanism and other structures. When cutting aluminum alloy raw materials, the metal dust splashed by the cutting is hit on the dustproof net with the air flow. At the same time, the air suction purification mechanism generates negative pressure to prevent the diffusion of harmful gases and metal dust. Under the action of the driving mechanism, the partition plate can automatically rise and fall with the movement of the laser cutting head. During the cutting process, the air suction pipe on the corresponding side is in a pass state. After the cutting is completed, the air suction pipe is in a disconnected state. On the one hand, the loss of air pressure is reduced to ensure that the suction force is sufficient to absorb harmful gases and metal dust. On the other hand, the air suction stops after the air suction pipe is disconnected, and the metal dust intercepted on the dustproof net can automatically fall into the collection box, ensuring the long-term use effect of the dustproof net.

[0018] (2) The driving mechanism of the present invention is composed of a moving frame, a sector gear, a driving rod, a ratchet and a pawl. The purpose of such a configuration is that when the laser cutting head moves to one side for cutting, the air suction pipe on that side will be in a pass state, and the rest of the time it will be in a break state, which effectively prevents the air flow from being dispersed, reduces pressure loss, and ensures the air suction effect;

[0019] (3) The present invention provides a support rod, a U-shaped block, a second rotating shaft, and a push block. After the push block contacts the dust screen, it can drive the dust screen to shake, thereby accelerating the falling of dust and facilitating the long-term use of the dust screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the gantry of the present invention;

[0023] Figure 3 is a schematic structural diagram of a partition and a driving mechanism of the present invention from a first perspective;

[0024] Figure 4 is a structural schematic diagram of the partition and the driving mechanism of the present invention from a second viewing angle;

[0025] Figure 5 It is a schematic diagram of the structure of the ratchet and the pawl of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the U-shaped block of the present invention.

[0027] In the figure: 1. workbench; 2. placement block; 3. gantry; 4. track; 5. slider; 6. laser cutting head; 7. motor; 8. support block; 9. reciprocating screw; 10. T-shaped moving block; 11. purification box; 12. suction pipe; 13. support rod; 14. dust net; 15. collection box; 16. exhaust pipe; 17. partition box; 18. partition; 19. ventilation hole; 20. mounting rod; 21. first rotating shaft; 22. sector gear; 23. moving frame; 24. rack; 25. ratchet; 26. driving rod; 27. pawl; 28. spring; 29. ​​limit block; 30. jack; 31. push block; 32. support rod; 33. U-shaped block; 34. second rotating shaft; 35. rubber strip.

[0028] The drawings are only used for illustrative purposes and are not to be construed as limitations of the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced in size, and do not represent the size and shape of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figures 1 to 4As shown, the present invention is a laser cutting machine for mounting metal frames with a dust removal structure, comprising a workbench 1 and a gantry 3 movable along the length direction of the workbench 1, a movable laser cutting head 6 is installed on the gantry 3, a plurality of placement blocks 2 are evenly arranged on the upper surface of the workbench 1 along the length direction, placement grooves are provided on the placement blocks 2, an air suction purification mechanism is provided on the gantry 3, the air suction purification mechanism comprises two air suction pipes 12, one end of the two air suction pipes 12 passes through the two sides of the gantry 3 and is connected to an air suction hood 13, and a circular dustproof net 14 is provided on the side where the two air suction hoods 13 are close to each other; a partition box 17 is provided on the air suction pipe 12, a partition plate 18 is movably provided between the top wall and the bottom wall of the partition box 17, a ventilation hole 19 is provided on the partition plate 18, a driving mechanism is provided between the laser cutting head 6 and the partition plates 18 on both sides, so that the partition plates 18 are raised and lowered with the movement of the laser cutting head 6; both sides of the gantry 3 are provided with A collection box 15 is provided; first, the aluminum alloy raw material to be cut is placed in the placement grooves of multiple placement blocks 2 to ensure the stability of the material during cutting, the air suction purification mechanism works, and then the laser cutting head 6 is started to move in the cutting direction. Under the action of the driving mechanism, the partition 18 on this side gradually descends first, so that the ventilation hole 19 enters the partition box 17. At this time, the suction pipe 12 on this side generates suction to absorb harmful gases, and metal dust hits the dustproof net 14 with the air flow from the jet nozzle. The negative pressure generated by the suction pipe 12 can make the metal dust be adsorbed on the dustproof net 14 to prevent the metal dust from splashing to the outside. As the cutting proceeds, the partition 18 gradually rises after descending to the bottom. When the cutting is completed, the partition 18 is reset. At this time, the suction pipe 12 is closed again, and the metal dust automatically falls into the collection box 15. Then the gantry 3 is moved to the next cutting position, and the laser cutting head 6 is moved to the other side to perform the second cutting.

[0031] See also Figures 2 to 5The driving mechanism includes a moving frame 23 fixed on the top of the partition 18, racks 24 are arranged on the inner walls of both sides of the moving frame 23, mounting rods 20 are arranged on both sides of the gantry 3, a first rotating shaft 21 is rotatably mounted on the mounting rod 20 close to the side wall of the moving frame 23, a sector gear 22 and a ratchet 25 are mounted on the first rotating shaft 21, a driving rod 26 is arranged on both sides of the laser cutting head 6, a plurality of ratchets 27 are rotatably mounted on the lower surface of the driving rod 26 along the length direction, a spring 28 is connected to the ratchets 27, one end of the spring 28 is connected to the driving rod 26, and the lower surface of the driving rod 26 along the length direction A plurality of limit blocks 29 are evenly arranged, and the plurality of limit blocks 29 are respectively located on one side of the plurality of pawls 27; the laser cutting head 6 drives the driving rod 26 to move in the cutting direction, and the pawl 27 on the driving rod 26 drives the ratchet 25 to rotate, so that the first rotating shaft 21 and the fan gear 22 rotate, and the fan gear 22 engages with the rack 24, first driving the moving frame 23 and the partition 18 to move downward, and as the fan gear 22 rotates, the moving frame 23 and the partition 18 move to the bottom and then gradually reset, at which time the cutting is completed, and the laser cutting head 6 stops moving, that is to say, one cutting just makes the fan gear 22 rotate one circle.

[0032] See also Figure 4 and Figure 6 , support rods 32 are provided on both sides of the gantry 3, and U-shaped blocks 33 are fixed at one end of the two support rods 32. Both sides of the outer frame of the dustproof net 14 are located in the U-shaped blocks 33, and rubber strips 35 are symmetrically arranged in the U-shaped blocks 33. A second rotating shaft 34 is rotatably installed in the U-shaped block 33, and one end of the second rotating shaft 34 is fixedly connected to the outer frame of the dustproof net 14. A plurality of push blocks 31 are provided on the lower surface of the driving rod 26; the dustproof net 14 is movably installed. When the driving rod 26 moves, the plurality of push blocks 31 will contact the dustproof net 14, driving the dustproof net 14 to shake, so as to facilitate the shaking of the metal dust adsorbed thereon into the collection box 15.

[0033] See also Figure 1 A track 4 is symmetrically provided on the workbench 1, a slider 5 is slidably connected in the track 4, and the slider 5 is fixedly connected to the bottom end of the gantry 3; the gantry 3 can be moved along the track 4 by manual pushing, or can be driven electrically, and the specific driving method is not limited.

[0034] See also Figure 1 and Figure 2 The air suction purification mechanism includes a mounting frame fixed on the top of the gantry 3, on which a purification box 11 is arranged, the purification box 11 is filled with an adsorbent, one end of two air suction pipes 12 are connected to the purification box 11, the top of the purification box 11 is connected with an air outlet pipe 16, and the air outlet pipe 16 is connected to an air pump; start the air pump, and the waste gas generated by cutting is sucked into the purification box 11 through the air suction pipe 12, and is discharged after being adsorbed by the adsorbent, thereby reducing pollution to the environment, and the adsorbent is activated carbon.

[0035] See also Figure 2 A motor 7 and a support block 8 are installed on the top of the gantry 3. The output shaft of the motor 7 is connected to a reciprocating screw rod 9. One end of the reciprocating screw rod 9 is rotatably connected to the support block 8. A T-shaped moving block 10 is threadedly connected to the reciprocating screw rod 9. A rectangular through hole is opened on the top of the gantry 3. One end of the T-shaped moving block 10 passes through the rectangular through hole and is fixedly connected to the laser cutting head 6. Start the motor 7 to drive the reciprocating screw rod 9 to rotate, so that the T-shaped moving block 10 drives the laser cutting head 6 to move.

[0036] See also Figure 2 , both sides of the gantry 3 are provided with insertion holes 30; it is convenient to insert the driving rod 26 and avoid the gantry 3 interfering with the movement of the driving rod 26.

[0037] The working principle of the present invention is as follows: firstly, the aluminum alloy raw material to be cut is placed in the placement grooves of a plurality of placement blocks 2 to ensure the stability of the material during cutting, and then the air pump (not shown) is started, and the air suction purification mechanism starts to work, and then the motor 7 is started to drive the reciprocating screw 9 to rotate, so that the T-shaped moving block 10 drives the laser cutting head 6 to move, and the laser cutting head 6 is started to move in the cutting direction (in Figure 2 For example), the laser cutting head 6 moves toward the left side, driving the driving rod 26 to move toward the left side. The pawl 27 on the driving rod 26 drives the ratchet 25 to rotate, so that the first rotating shaft 21 and the fan gear 22 rotate. The fan gear 22 is meshed with the rack 24, first driving the moving frame 23 and the partition 18 to move downward, and the partition 18 gradually descends first, so that the ventilation hole 19 enters the partition box 17. At this time, the suction pipe 12 on this side generates suction to absorb harmful gases, and the metal dust hits the dustproof net 14 with the air flow from the jet port. The negative pressure generated by the suction pipe 12 can make the metal dust be adsorbed on the dustproof net 14 to prevent the metal dust from splashing to the outside. As the cutting progresses, the partition 18 gradually rises after descending to the bottom. When the cutting is completed, the partition 18 is reset, and the suction pipe 12 is closed again. After losing the suction force, the metal dust automatically falls into the collection box 15, and during the movement of the driving rod 26, multiple push blocks 31 will contact the dustproof net 14, driving the dustproof net 14 to shake, so as to facilitate the metal dust adsorbed thereon to be shaken into the collection box 15. After completing one cutting, the gantry 3 is moved to the next cutting position, and the laser cutting head 6 is moved to the right to perform the second cutting, while the fan gear 22 on the left side will not rotate, the suction pipe 12 on the left side is in an open circuit state, and the suction pipe 12 on the right side starts to inhale, which can reduce the loss of air pressure and ensure that the suction force is sufficient to absorb harmful gases and metal dust.

[0038] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A laser cutting machine for metal frames of mounted paintings with a dust removal structure, comprising a workbench (1) and a gantry (3) movable along the length direction of the workbench (1), wherein a movable laser cutting head (6) is mounted on the gantry (3), characterized in that: The upper surface of the workbench (1) is evenly provided with a plurality of placement blocks (2) along the length direction, and the placement blocks (2) are provided with placement grooves. The gantry (3) is provided with an air intake purification mechanism, and the air intake purification mechanism comprises two air intake pipes (12), one end of the two air intake pipes (12) respectively passes through two sides of the gantry (3) and is connected to an air intake hood (13), and a circular dustproof net (14) is provided on the adjacent side of the two air intake hoods (13); A partition box (17) is provided on the air intake pipe (12); a partition plate (18) is movably provided between the top wall and the bottom wall of the partition box (17); a ventilation hole (19) is provided on the partition plate (18); a driving mechanism is provided between the laser cutting head (6) and the partition plates (18) on both sides, so that the partition plates (18) are raised and lowered as the laser cutting head (6) moves; Collection boxes (15) are provided on both sides of the gantry (3); The driving mechanism comprises a moving frame (23) fixed on the top of the partition (18), racks (24) are arranged on the inner walls of both sides of the moving frame (23), mounting rods (20) are arranged on both sides of the gantry (3), a first rotating shaft (21) is rotatably mounted on the mounting rod (20) close to the side wall of the moving frame (23), a sector gear (22) and a ratchet (25) are mounted on the first rotating shaft (21), a driving rod (26) is arranged on both sides of the laser cutting head (6), a plurality of ratchet pawls (27) are rotatably mounted on the lower surface of the driving rod (26) along the length direction, a spring (28) is connected to the ratchet pawl (27), one end of the spring (28) is connected to the driving rod (26), a plurality of limit blocks (29) are evenly arranged on the lower surface of the driving rod (26) along the length direction, and the plurality of limit blocks (29) are respectively located on one side of the plurality of ratchet pawls (27); Support rods (32) are provided on both sides of the gantry (3), U-shaped blocks (33) are fixed to one end of the two support rods (32), both sides of the outer frame of the dustproof net (14) are located inside the U-shaped blocks (33), and rubber strips (35) are symmetrically provided inside the U-shaped blocks (33); A second rotating shaft (34) is rotatably mounted inside the U-shaped block (33), one end of the second rotating shaft (34) is fixedly connected to the outer frame of the dustproof net (14), and a plurality of push blocks (31) are arranged on the lower surface of the driving rod (26).

2. The laser cutting machine for metal outer frames of mounted paintings with a dust removal structure according to claim 1 is characterized in that: The workbench (1) is symmetrically provided with rails (4), a sliding block (5) is slidably connected inside the rails (4), and the sliding block (5) is fixedly connected to the bottom end of the gantry (3).

3. The laser cutting machine for metal outer frames of mounted paintings with a dust removal structure according to claim 1 is characterized in that: The air intake purification mechanism comprises a mounting frame fixed to the top of the gantry (3), a purification box (11) being arranged on the mounting frame, the purification box (11) being filled with an adsorbent, one end of each of the two air intake pipes (12) being connected to the purification box (11), the top of the purification box (11) being connected to an air outlet pipe (16), and the air outlet pipe (16) being connected to an air pump.

4. The laser cutting machine for metal outer frames of mounted paintings with a dust removal structure according to claim 1 is characterized in that: A motor (7) and a support block (8) are mounted on the top of the gantry (3); the output shaft of the motor (7) is connected to a reciprocating screw rod (9); one end of the reciprocating screw rod (9) is rotatably connected to the support block (8); a T-shaped moving block (10) is threadedly connected to the reciprocating screw rod (9); a rectangular through hole is formed on the top of the gantry (3); one end of the T-shaped moving block (10) passes through the rectangular through hole and is fixedly connected to the laser cutting head (6).

5. The laser cutting machine for metal outer frames of mounted paintings with a dust removal structure according to claim 1, characterized in that: Insertion holes (30) are provided on both sides of the gantry (3).

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