A laser cutting machine anti-collision device

Abstract

The present invention discloses an anti-collision device for a laser cutting machine, comprising a base, a workpiece and a laser cutting machine, a truss is arranged on one side of the top surface of the base, a sliding mounting seat is slidably mounted on the horizontal part of the truss, a driving motor is arranged on one side of the truss, the output end of the driving motor is connected with a screw rod, the bottom surface of the sliding mounting seat is connected with the truss through a limiting slide rail, and a sleeve is arranged in the middle part of the bottom surface of the sliding mounting seat, the screw rod passes through the sleeve and is threadedly connected with the sleeve; the output end of the cylinder is connected with the laser cutting machine, the laser cutting machine is connected with the top surface of the sliding mounting seat through a drag chain, a through hole is arranged on the other side of the sliding mounting seat, a first anti-collision mechanism is arranged in the through hole, and a second anti-collision mechanism matched with the first anti-collision mechanism is arranged on both sides of the truss; the laser cutting machine in the present invention is efficient and stable, can avoid the chance of contact with the truss and the workpiece, so that the cutting head will not collide.

Description

Technical Field

[0001] The invention belongs to the technical field of laser cutting machines, and relates to an anti-collision device for a laser cutting machine, in particular to an anti-collision device for a laser cutting machine. Background Art

[0002] Laser cutting machine is to focus the laser emitted from the laser into a high power density laser beam through the optical path system. The laser beam irradiates the surface of the workpiece, causing the workpiece to reach the melting point or boiling point, and at the same time, the high-pressure gas coaxial with the beam blows away the molten or vaporized metal.

[0003] In the prior art, when protecting the laser cutting machine from collision, a ceramic ring is usually installed on the upper part of the cutting nozzle at the bottom of the cutting head. When the cutting head is hit, the ceramic ring is damaged first, and the machine stops running while other parts are protected to avoid more serious damage. However, the disadvantage of this method is that the protection range is small and can only protect the lower half of the cutting head. In addition, the damaged ceramic ring needs to be replaced, which is cumbersome and uneconomical. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that, when performing anti-collision protection on a laser cutting machine, a ceramic ring is usually installed on the upper part of the cutting nozzle at the bottom of the cutting head. When the cutting head is collided, the ceramic ring is damaged first, and the machine stops running and other parts are protected to avoid more serious damage. However, the disadvantage of this method is that the protection range is small and can only protect the lower half of the cutting head, and the damaged ceramic ring needs to be replaced, which is cumbersome and uneconomical. Therefore, a laser cutting machine anti-collision device is proposed.

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

[0006] A laser cutting machine anti-collision device comprises a base, a workpiece and a laser cutting machine, a truss is arranged on one side of the top surface of the base, a sliding mounting seat is slidably mounted on the horizontal part of the truss, a driving motor is arranged on one side of the truss, the output end of the driving motor is connected to the screw rod, the bottom surface of the sliding mounting seat is connected to the truss through a limiting slide rail, and a sleeve is arranged in the middle of the bottom surface of the sliding mounting seat, the screw rod passes through the sleeve and is threadedly connected to the sleeve;

[0007] A cylinder is installed on one side of the sliding mounting seat, and the output end of the cylinder is connected to the laser cutting machine. The laser cutting machine is connected to the top surface of the sliding mounting seat through a drag chain. A through hole is provided on the other side of the sliding mounting seat, and a first anti-collision mechanism is provided in the through hole. Second anti-collision mechanisms that are compatible with the first anti-collision mechanism are provided on both sides of the truss.

[0008] Preferably, the first anti-collision mechanism includes a second fixed plate, an elastic telescopic rod, a buffer plate, and a through hole. The second fixed plates are respectively arranged on both sides of the through hole, and a buffer plate is arranged between the two groups of second fixed plates. The buffer plate moves along the inner wall of the through hole, and both sides of the buffer plate are respectively connected to the buffer through the elastic telescopic rod.

[0009] Preferably, the second anti-collision mechanism is symmetrically arranged along the vertical midline of the truss, and the second anti-collision mechanism includes a first fixed plate, a guide rod, a spring, and a sliding plate. The first fixed plate is fixedly mounted on the truss, and two groups of guide rods are parallelly arranged on the side wall of the first fixed plate close to the sliding mounting seat. The guide rods penetrate the sliding plate and are slidably connected to the sliding plate. A spring is sleeved on the guide rod, and both ends of the spring are respectively connected to the first fixed plate and the sliding plate.

[0010] Preferably, a through hole matched with the guide rod is provided on the second fixing plate, and the size of the sliding plate is larger than the size of the through hole.

[0011] Preferably, the top of the laser cutting machine is connected to the output end of the cylinder through a mounting seat, and the mounting seat is connected to the top surface of the sliding mounting seat through a drag chain. A displacement sensor is provided on the side wall of the laser cutting machine, and the displacement sensor is connected to the cylinder signal.

[0012] Preferably, a plurality of groups of conveying rollers for transporting workpieces are arranged at equal intervals on the top surface of the base, a base plate is arranged at equal intervals on the top surface of the base, the base plate is arranged between two groups of conveying rollers, and limit blocks are slidably sleeved on both sides of the base plate, and the limit blocks are connected to the base plate by fastening bolts.

[0013] Preferably, an outer cover is buckled on the side wall of the sliding mounting seat, and the cylinder is located inside the outer cover.

[0014] Preferably, the working method of the anti-collision device of the laser cutting machine comprises the following steps:

[0015] S1. Place the workpiece to be cut on the top surface of the base and on the conveying roller and the base plate. Then, according to the width of the workpiece to be cut, adjust the limit blocks on both sides of the base plate so that the workpiece is located between the limit blocks on both sides, and limit the movement of the workpiece. Then, control the drive motor to drive the screw rod to move and pass through the limit slide rail and the sleeve to make the sliding mounting seat move horizontally along the truss and move to the position of the workpiece cutting line. When the sliding mounting seat moves to both sides of the truss, first, the guide rod is inserted into the through hole on the sliding mounting seat. Then, the side wall of the sliding mounting seat contacts the sliding plate and pushes the sliding plate to move along the guide rod, and at the same time, the spring is in a compressed state, thereby buffering the sliding mounting seat. When the sliding plate continues to move, the guide rod contacts the buffer plate in the through hole and pushes the buffer plate to move along the inner wall of the through hole, so that the elastic telescopic rods on both sides of the buffer plate are respectively in a compressed and extended state, thereby further buffering the sliding mounting seat. At the same time, since the laser cutting machine is installed on the sliding mounting seat, the laser cutting machine can avoid collision with the truss.

[0016] S2. Drive the laser cutting machine to move vertically along the sliding mounting seat by controlling the air cylinder, adjust the distance between the laser cutting machine and the workpiece, and notify the set drag chain and displacement sensor to limit the laser cutting machine in the vertical direction.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the workpiece to be cut is placed on the top surface of the base and is located on the conveying roller and the base plate, and then, according to the width of the workpiece to be cut, the limit blocks on both sides of the base plate are adjusted so that the workpiece is located between the limit blocks on both sides, and the workpiece is moved and limited. By arranging limit blocks on both sides of the base plate, the workpiece to be cut is limited so that the workpiece is not offset during cutting, so that the laser cutting machine can accurately cut the workpiece, and because the limit blocks can be moved and adjusted, it can be suitable for workpieces of different sizes, and has the advantage of strong applicability. Then, by controlling the drive motor to work, the lead screw is driven to move and through the limit slide rail and the sleeve, the sliding mounting seat is moved horizontally along the truss and moves to the position of the workpiece cutting line. When the sliding mounting seat moves to both sides of the truss, the guide rod is first inserted into the through hole on the sliding mounting seat, and then the side wall of the sliding mounting seat contacts with the sliding plate and pushes the sliding plate to move along the guide rod, and at the same time, the spring is in a compressed state, thereby buffering the sliding mounting seat. When the sliding plate continues to move, the guide rod contacts with the buffer plate in the through hole and pushes the buffer plate to move along the inner wall of the through hole, so that the elastic telescopic rods on both sides of the buffer plate are respectively in a compressed and extended state, thereby further buffering the sliding mounting seat, so that the sliding mounting seat can move stably along the truss without colliding with the truss, so that the sliding mounting seat has an efficient and safe anti-collision effect. At the same time, since the laser cutting machine is installed on the sliding mounting seat, the laser cutting machine can avoid collision with the truss.

[0018] The laser cutting machine is driven to move along the vertical direction of the sliding mount by controlling the air cylinder, and the distance between the laser cutting machine and the workpiece is adjusted. The set drag chain and displacement sensor are notified to limit the laser cutting machine in the vertical direction. The displacement sensor is used to measure the distance between the laser cutting machine and the workpiece to avoid contact between the cutting head on the laser cutting machine and the workpiece, which may cause the cutting head to collide and be damaged. At the same time, the drag chain also limits the distance between the laser cutting machine and the workpiece to avoid contact between the cutting head on the laser cutting machine and the workpiece, which may cause the cutting head to collide and be damaged. When the horizontal and vertical positions of the laser cutting machine are adjusted, the workpiece can be cut. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0021] Figure 2 It is a structural schematic diagram of the connection relationship between the laser cutting machine and the sliding mounting seat in the present invention.

[0022] Figure 3 It is a cross-sectional view of the connection relationship between the laser cutting machine and the sliding mounting seat in the present invention.

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the laser cutting machine in the present invention.

[0024] Figure 5 It is a schematic diagram of the structure inside the through hole in the present invention.

[0025] Figure 6 For the present invention Figure 1 A magnified schematic diagram of the details of area A.

[0026] In the figure: 1. base; 2. workpiece; 3. conveyor roller; 4. base plate; 5. limit block; 6. truss; 7. drive motor; 8. screw rod; 9. sliding mounting seat; 10. drag chain; 11. cylinder; 12. laser cutting machine; 13. outer cover; 14. through hole; 15. limit slide rail; 16. sleeve; 17. displacement sensor; 18. mounting seat; 19. first fixed plate; 20. guide rod; 21. spring; 22. sliding plate; 23. second fixed plate; 24. elastic telescopic rod; 25. buffer plate; 26. through hole. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than 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.

[0028] See also Figure 1-6 As shown, a laser cutting machine anti-collision device comprises a base 1, a workpiece 2 and a laser cutting machine 12, a truss 6 is arranged on one side of the top surface of the base 1, a sliding mounting seat 9 is slidably mounted on the horizontal part of the truss 6, a driving motor 7 is arranged on one side of the truss 6, an output end of the driving motor 7 is connected to a screw rod 8, the bottom surface of the sliding mounting seat 9 is connected to the truss 6 through a limiting slide rail 15, and a sleeve 16 is arranged in the middle of the bottom surface of the sliding mounting seat 9, the screw rod 8 passes through the sleeve 16 and is threadedly connected to the sleeve 16;

[0029] A cylinder 11 is installed on one side of the sliding mounting seat 9, and the output end of the cylinder 11 is connected to the laser cutting machine 12. The laser cutting machine 12 is connected to the top surface of the sliding mounting seat 9 through the drag chain 10. A through hole 14 is provided on the other side of the sliding mounting seat 9, and a first anti-collision mechanism is provided in the through hole 14. A second anti-collision mechanism compatible with the first anti-collision mechanism is provided on both sides of the truss 6.

[0030] The first anti-collision mechanism includes a second fixed plate 23, an elastic telescopic rod 24, a buffer plate 25, and a through hole 26. The second fixed plates 23 are respectively arranged on both sides of the through hole 14, and a buffer plate 25 is arranged between the two groups of second fixed plates 23. The buffer plate 25 moves along the inner wall of the through hole 14, and the two sides of the buffer plate 25 are respectively connected to the buffer plate 25 through the elastic telescopic rod 24.

[0031] The second anti-collision mechanism is symmetrically arranged along the vertical midline of the truss 6, and the second anti-collision mechanism includes a first fixed plate 19, a guide rod 20, a spring 21, and a sliding plate 22. The first fixed plate 19 is fixedly installed on the truss 6, and two groups of guide rods 20 are arranged in parallel on the side wall of the first fixed plate 19 close to the sliding mounting seat 9. The guide rod 20 passes through the sliding plate 22 and is slidably connected to the sliding plate 22. A spring 21 is sleeved on the guide rod 20, and both ends of the spring 21 are connected to the first fixed plate 19 and the sliding plate 22 respectively.

[0032] The second fixed plate 23 is provided with a through hole 26 adapted to the guide rod 20, and the size of the sliding plate 22 is larger than that of the through hole 14. The top of the laser cutting machine 12 is connected to the output end of the cylinder 11 through the mounting seat 18, and the mounting seat 18 is connected to the top surface of the sliding mounting seat 9 through the drag chain 10. A displacement sensor 17 is provided on the side wall of the laser cutting machine 12, and the displacement sensor 17 is connected to the cylinder 11 signal. The model of the displacement sensor 17 is HG-C1050.

[0033] A plurality of groups of conveying rollers 3 for transporting workpieces 2 are evenly spaced on the top surface of the base 1, and a base plate 4 is evenly spaced on the top surface of the base 1. The base plate 4 is arranged between two groups of conveying rollers 3, and limit blocks 5 are slidably sleeved on both sides of the base plate 4, and the limit blocks 5 are connected to the base plate 4 by fastening bolts.

[0034] An outer cover 13 is buckled and provided on the side wall of the sliding mounting seat 9 , and the cylinder 11 is located inside the outer cover 13 .

[0035] The working method of the laser cutting machine anti-collision device comprises the following steps:

[0036] S1. Place the workpiece 2 to be cut on the top surface of the base 1 and on the conveying roller 3 and the base plate 4. Then, according to the width of the workpiece 2 to be cut, adjust the limit blocks 5 on both sides of the base plate 4 so that the workpiece 2 is located between the limit blocks 5 on both sides, and limit the movement of the workpiece 2. Then, control the drive motor 7 to drive the screw rod 8 to move and pass through the limit slide rail 15 and the sleeve 16 to make the sliding mounting seat 9 move horizontally along the truss 6 and move to the position of the cutting line of the workpiece 2. When the sliding mounting seat 9 moves to both sides of the truss 6, first insert the guide rod 20 into the through hole 14 on the sliding mounting seat 9, and then , the side wall of the sliding mounting seat 9 contacts the sliding plate 22 and pushes the sliding plate 22 to move along the guide rod 20, and at the same time makes the spring 21 in a compressed state, thereby buffering the sliding mounting seat 9. When the sliding plate 22 continues to move, the guide rod 20 contacts the buffer plate 25 in the through hole 14 and pushes the buffer plate 25 to move along the inner wall of the through hole 14, so that the elastic telescopic rods 24 on both sides of the buffer plate 25 are respectively in a compressed and extended state, thereby further buffering the sliding mounting seat 9. At the same time, since the laser cutting machine 12 is installed on the sliding mounting seat 9, the laser cutting machine 12 can avoid collision with the truss 6;

[0037] S2. Drive the laser cutting machine 12 to move vertically along the sliding mounting seat 9 by controlling the air cylinder 11, adjust the distance between the laser cutting machine 12 and the workpiece 2, and notify the set drag chain 10 and displacement sensor 17 to limit the laser cutting machine 12 in the vertical direction.

[0038] The working principle of the present invention is as follows: the workpiece 2 to be cut is placed on the top surface of the base 1 and is located on the conveying roller 3 and the base plate 4. Then, according to the width of the workpiece 2 to be cut, the limit blocks 5 on both sides of the base plate 4 are adjusted so that the workpiece 2 is located between the limit blocks 5 on both sides, and the workpiece 2 is moved and limited. By sleeved with limit blocks 5 on both sides of the base plate 4, the workpiece 2 to be cut is limited so that the workpiece 2 will not be offset during cutting, so that the laser cutting machine can accurately cut the workpiece 2. Moreover, since the limit blocks 5 can be moved and adjusted, it can be suitable for workpieces 2 of different sizes, and has the advantage of strong applicability. Then, by controlling the driving motor 7 to work, the screw rod 8 is driven to move and through the limit slide rail 15 and the sleeve 16, the sliding mounting seat 9 is horizontally moved along the truss 6 and moved to the position of the cutting line of the workpiece 2. When the sliding mounting seat 9 moves to When the two sides of the truss 6 are moved, the guide rod 20 is first inserted into the through hole 14 on the sliding mounting seat 9, and then the side wall of the sliding mounting seat 9 contacts the sliding plate 22 and pushes the sliding plate 22 to move along the guide rod 20, and at the same time, the spring 21 is in a compressed state, thereby buffering the sliding mounting seat 9. When the sliding plate 22 continues to move, the guide rod 20 contacts the buffer plate 25 in the through hole 14 and pushes the buffer plate 25 to move along the inner wall of the through hole 14, so that the elastic telescopic rods 24 on both sides of the buffer plate 25 are respectively in a compressed and extended state, thereby further buffering the sliding mounting seat 9, so that the sliding mounting seat 9 can move stably along the truss 6 without colliding with the truss 6, so that the sliding mounting seat 9 has an efficient and safe anti-collision effect. At the same time, since the laser cutting machine 12 is installed on the sliding mounting seat 9, the laser cutting machine 12 can avoid collision with the truss 6.

[0039] The laser cutting machine 12 is driven to move vertically along the sliding mounting seat 9 by controlling the air cylinder 11, and the distance between the laser cutting machine 12 and the workpiece 2 is adjusted. The set drag chain 10 and the displacement sensor 17 are notified to limit the laser cutting machine 12 in the vertical direction. The displacement sensor 17 is used to measure the distance between the laser cutting machine 12 and the workpiece 2 to avoid contact between the cutting head on the laser cutting machine 12 and the workpiece 2, which may cause the cutting head 12 to collide and be damaged. At the same time, the drag chain 10 also limits the distance between the laser cutting machine 12 and the workpiece 2 to avoid contact between the cutting head on the laser cutting machine and the workpiece 2, which may cause the cutting head 12 to collide and be damaged. When the horizontal and vertical positions of the laser cutting machine are adjusted, the workpiece 2 can be cut.

[0040] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A laser cutting machine anti-collision device, characterized in that: The invention comprises a base (1), a workpiece (2) and a laser cutting machine (12), wherein a truss (6) is arranged on one side of the top surface of the base (1), a sliding mounting seat (9) is slidably mounted on the horizontal part of the truss (6), a driving motor (7) is arranged on one side of the truss (6), an output end of the driving motor (7) is connected to a screw rod (8), the bottom surface of the sliding mounting seat (9) is connected to the truss (6) via a limiting slide rail (15), a sleeve (16) is arranged in the middle of the bottom surface of the sliding mounting seat (9), the screw rod (8) passes through the sleeve (16) and is threadedly connected to the sleeve (16); A cylinder (11) is installed on one side of the sliding mounting seat (9), the output end of the cylinder (11) is connected to a laser cutting machine (12), the laser cutting machine (12) is connected to the top surface of the sliding mounting seat (9) via a drag chain (10), a through hole (14) is provided on the other side of the sliding mounting seat (9), a first anti-collision mechanism is provided in the through hole (14), and second anti-collision mechanisms compatible with the first anti-collision mechanism are provided on both sides of the truss (6); The first anti-collision mechanism comprises a second fixing plate (23), an elastic telescopic rod (24), a buffer plate (25), and a through hole (26); the second fixing plates (23) are respectively arranged on both sides of the through hole (14); a buffer plate (25) is arranged between two groups of second fixing plates (23); the buffer plate (25) moves along the inner wall of the through hole (14); and both sides of the buffer plate (25) are respectively connected to the buffer plate (25) via the elastic telescopic rod (24); The second anti-collision mechanism is symmetrically arranged along the vertical midline of the truss (6), and comprises a first fixed plate (19), a guide rod (20), a spring (21), and a sliding plate (22); the first fixed plate (19) is fixedly mounted on the truss (6); two groups of guide rods (20) are arranged in parallel on the side wall of the first fixed plate (19) close to the sliding mounting seat (9); the guide rods (20) penetrate the sliding plate (22) and are slidably connected to the sliding plate (22); a spring (21) is sleeved on the guide rod (20); and two ends of the spring (21) are respectively connected to the first fixed plate (19) and the sliding plate (22); The second fixed plate (23) is provided with a through hole (26) adapted to the guide rod (20), and the size of the sliding plate (22) is larger than the size of the through hole (14); The top of the laser cutting machine (12) is connected to the output end of the cylinder (11) via a mounting seat (18), and the mounting seat (18) is connected to the top surface of the sliding mounting seat (9) via a drag chain (10). A displacement sensor (17) is provided on the side wall of the laser cutting machine (12), and the displacement sensor (17) is connected to the cylinder (11) for signal connection; A plurality of groups of conveying rollers (3) for conveying workpieces (2) are arranged at equal intervals on the top surface of the base (1), a base plate (4) is arranged at equal intervals on the top surface of the base (1), the base plate (4) is arranged between two groups of conveying rollers (3), and limit blocks (5) are slidably sleeved on both sides of the base plate (4), and the limit blocks (5) are connected to the base plate (4) by fastening bolts; The working method of the laser cutting machine anti-collision device comprises the following steps: S1. Place the workpiece (2) to be cut on the top surface of the base (1) and position it on the conveying roller (3) and the base plate (4). Then, according to the width of the workpiece (2) to be cut, adjust the limit blocks (5) on both sides of the base plate (4) so ​​that the workpiece (2) is located between the limit blocks (5) on both sides, and move the workpiece (2) to a limited position. Then, by controlling the drive motor (7) to work, drive the screw rod (8) to move and pass through the limit slide rail (15) and the sleeve (16), so that the sliding mounting seat (9) moves horizontally along the truss (6) and moves to the position of the cutting line of the workpiece (2). When the sliding mounting seat (9) moves to both sides of the truss (6), first, the guide rod (20) is inserted into the through hole (14) on the sliding mounting seat (9). Then, the side wall of the sliding mounting seat (9) contacts the sliding plate (22) and pushes the sliding plate (22) to move along the guide rod (20), and at the same time, the spring (21) is in a compressed state, thereby buffering the sliding mounting seat (9). When the sliding plate (22) continues to move, the guide rod (20) contacts the buffer plate (25) in the through hole (14) and pushes the buffer plate (25) to move along the inner wall of the through hole (14), so that the elastic telescopic rods (24) on both sides of the buffer plate (25) are respectively in a compressed and extended state, thereby further buffering the sliding mounting seat (9). At the same time, since the laser cutting machine (12) is installed on the sliding mounting seat (9), the laser cutting machine (12) can avoid collision with the truss (6); S2. The laser cutting machine (12) is driven to move in the vertical direction along the sliding mounting seat (9) by controlling the air cylinder (11), the distance between the laser cutting machine (12) and the workpiece (2) is adjusted, and the laser cutting machine (12) is limited in the vertical direction by the provided drag chain (10) and the displacement sensor (17).

2. The anti-collision device for a laser cutting machine according to claim 1, characterized in that: An outer cover (13) is buckled and arranged on the side wall of the sliding mounting seat (9), and the cylinder (11) is located inside the outer cover (13).

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