A cutting head anti-collision mechanism for a laser cutting machine

Abstract

The utility model provides a kind of cutting head anti-collision mechanism for laser cutting machine, it is related to laser cutting machine technical field, and it includes: laser cutting head, the laser cutting head surface sleeve joint has fixed plate, the laser cutting head lower end nozzle outside is provided with nozzle protection ring block, the nozzle protection ring block upper end is screwed with limit buffer frame, the nozzle protection ring block inside and outside respectively are bonded with inner ring cover and outer ring cover, the outer ring cover outside face is provided with first convex strip, the inner ring cover inside face is contacted with laser cutting head by second convex strip, the fixed plate surface is movably connected with limit buffer frame by link plate, the limit buffer frame outside end is inserted with damping arc block, the link plate upper end is fixed with laser cutting head by limit top plate and sleeve joint.The utility model solves the problem that in prior art, anti-collision plate and shock absorber are only arranged at the periphery of cutting head, and collision is easily caused when cutting head is not accurately positioned and approaches the surface of material.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting machine technology, specifically to a cutting head anti-collision mechanism for laser cutting machines. Background Technology

[0002] A laser cutting machine consists of four parts: a solid-state laser cutting machine body, a high-power laser power supply, a water-cooled cabinet, and a computer operation control console. It boasts advantages such as compact structure, convenient operation, high cutting precision, and good stability. Currently, it is widely used in industries such as sheet metal processing, advertising, kitchenware, lighting, knives, and hardware for processing thin sheet metal parts. The cutting head is an essential component of a laser cutting machine. A search revealed existing technology (Announcement No.: CN202221713049.8) for a cutting head anti-collision mechanism in laser cutting machines. The document states that "the anti-collision plate and the shock-absorbing device work together to prevent collisions and reduce vibrations in the cutting head. During operation, the cutting head may collide with various internal and external factors. The impact force first acts on the anti-collision plate, then is transmitted from the anti-collision plate to the shock-absorbing device. After being buffered by the buffer spring, the impact force is reduced to a minimum when it reaches the cutting head, minimizing damage." However, in this existing technology, the anti-collision plate and shock-absorbing device are only located around the periphery of the cutting head. When the cutting head is not accurately positioned and approaches the material surface, it is prone to collisions. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, a cutting head anti-collision mechanism for laser cutting machines is provided to solve the problem that in existing technologies, the anti-collision plate and shock absorption device are only located on the periphery of the cutting head, which can easily cause collisions when the cutting head is not accurately positioned and approaches the material surface.

[0004] To achieve the above objectives, a laser cutting machine head anti-collision mechanism is provided, comprising: a laser cutting head, wherein a fixing plate is sleeved on the surface of the laser cutting head. A nozzle protection ring is provided on the outer side of the lower nozzle of the laser cutting head. A limit buffer frame is screwed to the upper end of the nozzle protection ring. An inner ring and an outer ring are respectively bonded to the inner and outer sides of the nozzle protection ring. A first protrusion is provided on the outer side of the outer ring. The inner side of the inner ring contacts the laser cutting head through a second protrusion. The limit buffer frame is movably connected to the surface of the fixing plate through a connecting plate. A damping arc block is inserted into the outer end of the limit buffer frame. The upper end of the connecting plate is sleeved and fixed to the laser cutting head through a limit top plate.

[0005] Furthermore, the fixing plate is welded with fixing frames on the left and right sides; and the fixing frames are installed and fixed to the moving shaft mechanism of the laser cutting head.

[0006] Furthermore, a vibration damping pad is adhered to the upper surface of the fixing plate, a limiting top plate is attached to the upper surface of the vibration damping pad, and a laser cutting head is sleeved in the middle of the limiting top plate.

[0007] Furthermore, a displacement sensor is installed on the lower surface of the fixed plate, and positioning posts are provided on both the limiting buffer frame and the surface of the fixed plate.

[0008] Furthermore, the damping arc block has insertion holes on its upper and lower surfaces, and positioning pins are inserted into the insertion holes accordingly.

[0009] Furthermore, the surface of the nozzle protective ring block is provided with an air vent, and four sets of damping arc blocks are inserted and distributed at the distance between the fixing plate and the limiting buffer frame.

[0010] Furthermore, the second and first protrusions are circumferentially distributed at equal intervals on the inner and outer sides of the nozzle protective ring block.

[0011] The beneficial effects of this utility model are as follows: the anti-collision mechanism for the laser cutting machine utilizes a nozzle protective ring block, a damping arc block, a limiting buffer frame, a limiting top plate, and a connecting plate to form a retractable anti-collision structure. The nozzle protective ring block covers the outside of the laser cutting head, so that the lower end of the nozzle protective ring block first contacts and collides with the surface of the cutting material. The impact of the collision pushes the damping arc block to push the laser cutting head, which is sleeved on the limiting buffer frame and the plate surface, to move upward and retract. This effectively prevents foreign objects from directly impacting the cutting head of the laser cutting machine, facilitates protection against impacts to the lower end and outer periphery of the laser cutting head, enhances the anti-collision effect of the cutting head anti-collision mechanism, and ensures the stable operation of the laser cutting machine's cutting head. Attached Figure Description

[0012] Figure 1 This is a front view structural diagram of the anti-collision mechanism for the cutting head of a laser cutting machine according to an embodiment of the present invention.

[0013] Figure 2 This is a front view cross-sectional structural diagram of the anti-collision mechanism for the cutting head of a laser cutting machine according to an embodiment of the present invention.

[0014] Figure 3 This is a bottom view cross-sectional structural diagram of the nozzle protection ring block according to an embodiment of the present invention.

[0015] Figure 4 This is a top view cross-sectional structural diagram of the limiting buffer frame according to an embodiment of the present utility model.

[0016] In the diagram: 1. Laser cutting head; 2. Fixing plate; 21. Fixing frame; 22. Vibration isolation pad; 23. Displacement sensor; 3. Nozzle protection ring block; 31. Outer ring sleeve; 32. First convex strip; 33. Ventilation mesh; 34. Inner ring sleeve; 35. Second convex strip; 4. Damping arc block; 41. Insertion hole; 5. Limiting buffer frame; 51. Limiting top plate; 52. Positioning post; 53. Connecting plate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please refer to Figures 1 to 4 As shown, this utility model provides a laser cutting machine head anti-collision mechanism, including: a laser cutting head 1, and a fixing plate 2 sleeved on the surface of the laser cutting head 1. A nozzle protection ring 3 is provided on the outer side of the nozzle at the lower end of the laser cutting head 1. A limit buffer frame 5 is screwed onto the upper end of the nozzle protection ring 3. An inner ring sleeve 34 and an outer ring sleeve 31 are respectively bonded to the inner and outer sides of the nozzle protection ring 3. A first protrusion 32 is provided on the outer side of the outer ring sleeve 31. The inner side of the inner ring sleeve 34 contacts the laser cutting head 1 through a second protrusion 35. The limit buffer frame 5 is movably connected to the surface of the fixing plate 2 through a connecting plate 53. A damping arc block 4 is inserted into the outer end of the limit buffer frame 5. The upper end of the connecting plate 53 is sleeved and fixed to the laser cutting head 1 through a limit top plate 51.

[0019] During the descent and positioning of the laser cutting head 1, if inaccurate positioning causes the laser cutting head 1 to continue descending, the lower end face of the nozzle protective ring block 3 will first contact and collide with the surface of the cutting material. The collision and squeezing force will push the nozzle protective ring block 3 upward to compress the damping arc block 4, causing the limit buffer frame 5 to move upward as a whole, which will drive the laser cutting head 1 to move upward and retract, preventing the laser cutting head 1 from continuously descending and hitting the surface of the cutting material. When a foreign object hits the laser cutting head 1 from the outside, it will be blocked and buffered by the damping arc block 4 and the first protrusion 32 on the side of the outer ring 31, reducing the impact force on the laser cutting head 1, enhancing the anti-collision effect of the cutting head anti-collision mechanism, and ensuring the stable operation of the laser cutting machine's cutting head.

[0020] In this embodiment, fixing frames 21 are welded to the left and right sides of the fixing plate 2; and the fixing frames 21 are installed and fixed to the moving shaft mechanism of the laser cutting head 1. A vibration isolation pad 22 is bonded to the upper surface of the fixing plate 2, and a limiting top plate 51 is attached to the upper surface of the vibration isolation pad 22. The laser cutting head 1 is sleeved in the middle of the limiting top plate 51.

[0021] In a preferred embodiment, the fixed plate 2 is connected to the laser cutting head 1 at a buffer distance from the moving shaft mechanism (the moving shaft mechanism is a mature existing technology and will not be described in detail; it is used to move the laser cutting head 1) via the fixed bracket 21, providing a retractable buffer space for the laser cutting head 1. The vibration damping pad 22 helps to reduce the collision between the limiting top plate 51 and the fixed plate 2 during descent. The laser cutting head 1, sleeved in the limiting top plate 51, moves along with the movement of the limiting top plate 51.

[0022] In this embodiment, a displacement sensor 23 is installed on the lower surface of the fixed plate 2, and positioning posts 52 are provided on both the limiting buffer frame 5 and the surface of the fixed plate 2. Insertion holes 41 are provided on the upper and lower surfaces of the damping arc block 4, and positioning posts 52 are inserted into the corresponding insertion holes 41. A ventilation mesh 33 is provided on the surface of the nozzle protective ring block 3, and four sets of damping arc blocks 4 are inserted and distributed at the distance between the fixed plate 2 and the limiting buffer frame 5. The second convex strip 35 and the first convex strip 32 are circumferentially and equidistantly distributed on the inner and outer sides of the nozzle protective ring block 3.

[0023] In a preferred embodiment, the displacement sensor 23 detects the movement position of the limiting buffer frame 5. When the movement position exceeds the preset range, an alarm system is triggered, prompting the operator to stop the laser cutting machine and perform timely inspection and maintenance. Four sets of damping arc blocks 4 buffer the impact forces received laterally and longitudinally, thereby reducing the impact force on the inner laser cutting head 1. The first protrusion 32 buffers the impact force from the outer side, and the second protrusion 35, located inside the nozzle protection ring block 3, further buffers the impact and supports the laser cutting head 1, enhancing the anti-collision effect of the cutting head anti-collision mechanism and ensuring the stable operation of the laser cutting machine's cutting head.

[0024] This utility model's anti-collision mechanism for laser cutting machines effectively solves the problem in existing technologies where anti-collision plates and shock-absorbing devices are only located around the periphery of the cutting head, making it prone to collisions when the cutting head is not accurately positioned and approaches the material surface. It effectively prevents foreign objects from directly impacting the cutting head of the laser cutting machine, facilitating protection against impacts to the lower end and periphery of the laser cutting head, enhancing the anti-collision effect of the cutting head anti-collision mechanism, and ensuring the stable operation of the laser cutting machine's cutting head. It is suitable for anti-collision mechanisms for laser cutting machines.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cutting head anti-collision mechanism for a laser cutting machine, comprising: A laser cutting head (1), wherein a fixing plate (2) is sleeved on the surface of the laser cutting head (1), characterized in that: A nozzle protection ring block (3) is provided on the outer side of the nozzle at the lower end of the laser cutting head (1). A limit buffer frame (5) is screwed onto the upper end of the nozzle protection ring block (3). An inner ring sleeve (34) and an outer ring sleeve (31) are respectively bonded to the inner and outer sides of the nozzle protection ring block (3). A first protrusion (32) is provided on the outer side of the outer ring sleeve (31). The inner side of the inner ring sleeve (34) is in contact with the laser cutting head (1) through a second protrusion (35). The surface of the fixing plate (2) is movably connected to the limit buffer frame (5) through a connecting plate (53). A damping arc block (4) is inserted into the outer end of the limit buffer frame (5). The upper end of the connecting plate (53) is sleeved and fixed to the laser cutting head (1) through a limit top plate (51).

2. A cutting head anti-collision mechanism for a laser cutting machine according to claim 1, characterized in that, The fixing plate (2) has a fixing frame (21) welded on the left and right sides; and the fixing frame (21) is installed and fixed with the moving shaft mechanism of the laser cutting head (1).

3. A cutting head anti-collision mechanism for a laser cutting machine according to claim 1, characterized in that, The upper surface of the fixed plate (2) is bonded with a vibration isolation pad (22), the upper surface of the vibration isolation pad (22) is attached to a limiting top plate (51), and a laser cutting head (1) is sleeved in the middle of the limiting top plate (51).

4. The cutting head anti-collision mechanism for a laser cutting machine according to claim 1, characterized in that, A displacement sensor (23) is installed on the lower surface of the fixed plate (2), and positioning posts (52) are provided on the surfaces of the limiting buffer frame (5) and the fixed plate (2).

5. The cutting head anti-collision mechanism for a laser cutting machine according to claim 1, characterized in that, The damping arc block (4) has insertion holes (41) on its upper and lower surfaces, and a positioning post (52) is inserted into the insertion hole (41).

6. A cutting head anti-collision mechanism for a laser cutting machine according to claim 1, characterized in that, The nozzle protective ring block (3) has an air vent (33) on its surface, and four sets of damping arc blocks (4) are inserted and distributed at the distance between the fixing plate (2) and the limiting buffer frame (5).

7. The anti-collision mechanism for a laser cutting machine cutting head according to claim 1, characterized in that, The second protrusion (35) and the first protrusion (32) are circumferentially distributed at equal intervals on the inner and outer sides of the nozzle protective ring block (3).

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