Collision reset mechanism for laser processing head and laser processing head

Abstract

The utility model discloses a collision reset mechanism for a laser processing head and the laser processing head, and belongs to the technical field of laser welding equipment, the collision reset mechanism for the laser processing head comprises a detection plate, a sleeve, a ball joint, a ball joint fixing piece, a shell and a bottom sealing plate; through holes matched with the outer side of the sleeve are formed in the center of the detection plate and the center of the ball joint respectively, the detection plate and the center of the ball joint are arranged on the two sides of the sleeve in a sleeving mode respectively, a through hole matched with the outer side of the ball joint is formed in the center of the ball joint fixing piece, the ball joint fixing piece is movably arranged on the outer side of the ball joint, and a plurality of arc-shaped notches which are arranged in a staggered mode along the circumference are formed in the through hole of the detection plate. The shell is arranged outside the detection plate and the ball joint fixing piece, the bottom sealing plate is arranged at the bottom of the shell, a through hole matched with the outer side of the sleeve is formed in the center of the bottom sealing plate, and the sleeve is sleeved with the bottom sealing plate. The laser processing head can effectively solve the problem that the laser processing head is easy to damage or damage due to collision.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser cutting equipment, and particularly relates to a collision reset mechanism for a laser processing head and a laser processing head. Background Art

[0002] At present, as a new thermal cutting technology, laser cutting has the advantages of high cutting speed, high production efficiency, good cutting end face quality, environmental protection, etc., and has become one of the most important ways for metal sheet cutting, and its application range is becoming wider and wider.

[0003] When the laser processing head is working, since the shape of the processed metal blank is not fixed, when the laser processing head moves, it is very likely to cause collision or accidental touch due to manual operation error or abnormal shape of the processed material. If the laser processing head has no protection measures, it is very easy to damage the laser processing head, thereby shortening the life of the processing head. More seriously, it will directly damage the processing head. As the most core part of the entire laser processing equipment, the laser processing head itself has the characteristics of "high cost", "long cycle", "precision structure", etc. Once the laser processing head is damaged, it will have a great impact on the entire equipment. Summary of the Utility Model

[0004] In view of the defects in the background art, the utility model provides a collision reset mechanism for a laser processing head and a laser processing head, which effectively solves the problem that the laser processing head is easily damaged due to collision.

[0005] According to one aspect of the present application, a collision reset mechanism for a laser processing head is provided, which includes: a detection plate, a sleeve, a ball joint, a ball joint fixing member, a housing and a bottom sealing plate; through holes adapted to the outer side of the sleeve are respectively opened at the centers of the detection plate and the ball joint and are respectively sleeved on both sides of the sleeve, a through hole adapted to the outer side of the ball joint is provided at the center of the ball joint fixing member and is movably arranged on the outer side of the ball joint, a plurality of arc-shaped notch grooves are arranged in a circumferentially staggered manner at the through hole of the detection plate, the housing is arranged on the outer sides of the detection plate and the ball joint fixing member, and the bottom sealing plate is arranged at the bottom of the housing, and a through hole adapted to the outer side of the sleeve is opened at the center thereof and is sleeved on the outer side of the sleeve.

[0006] Further, the detection plate and the ball joint fixing member are arranged in parallel, and the axial centerlines of the detection plate, the ball joint, the ball joint fixing member and the sleeve are on the same straight line.

[0007] Further, the housing is connected to the ball joint fixing member by screws.

[0008] The ball joint fixing member includes a lower semi-fixing member and an upper semi-fixing member that are detachably fixed.

[0009] Further, both the outer sides of the detection plate and the ball joint fixing member are rectangular.

[0010] Further, step circles are respectively arranged on both sides of the sleeve, and the detection plate and the ball joint are respectively sleeved at the two step circles.

[0011] Further, at least two mounting holes are radially formed on the detection plate towards its through hole, at least two adjacent mounting holes form a 90° angle, and eddy current sensors are respectively installed in each mounting hole.

[0012] Further, the number of the mounting holes is four, and they are evenly arranged along the circumference of the through hole of the detection plate.

[0013] Further, a processor is further included, and each eddy current sensor is respectively connected to the processor through a circuit, and an alarm device is connected to the processor.

[0014] According to another aspect of the present application, a laser processing head equipped with the collision reset mechanism described in the above technical solution is provided, including a processing head, the processing head is detachably connected to one side of the sleeve close to the ball joint, and the axial center lines of the processing head and the sleeve are on the same straight line.

[0015] Compared with the prior art, a collision reset mechanism for a laser processing head and a laser processing head provided by the present utility model have the following beneficial effects:

[0016] (1) The structure of the present utility model is novel, simple and reasonable, which can effectively solve the problem that the laser processing head is prone to damage or breakage due to collision, and can give an alarm, perform reset and start the reset program after the laser processing head collides, so as to avoid further damage to the laser processing head.

[0017] (2) By staggeredly arranging arc-shaped notch along the circumference at the central through hole of the detection plate, the detection plate has weak rigidity at this position. The sleeve is installed in the inner holes of the detection plate and the ball joint, and the processing head is installed on the sleeve. When the laser processing head operates normally, the processing head is not affected by external force, and the sleeve and the ball joint do not move relatively. When the laser processing head is affected by external force (such as collision or accidental touch), the sleeve will tend to swing with the center of the ball joint as the swing center, and multiple weak-rigidity slots at the inner hole of the detection plate will undergo elastic deformation due to insufficient rigidity, avoiding damage or breakage of the processing head. After the external force disappears, under the elastic action of the detection plate, the processing head will return to the normal working position, realizing the reset of the processing head.

[0018] (3) When the utility model installs an eddy current sensor by opening an installation hole on the detection plate, when an external force acts on the laser processing head and causes elastic deformation at the through hole of the detection plate, the displacement of the sleeve can be detected by the eddy current sensor and an alarm message is sent to the processor, and the processor sends the alarm message to the alarm device to alarm the staff. Brief Description of the Drawings

[0019] Figure 1 is a schematic external view of the processing head of the utility model installed on the collision reset device;

[0020] Figure 2 is Figure 1 the sectional view taken along the A-A direction in

[0021] Figure 3 is a schematic external view of the main components of the collision reset device of the utility model;

[0022] Figure 4 is a perspective schematic view of the detection plate in the utility model;

[0023] Figure 5 is a side view schematic view of the detection plate in the utility model;

[0024] Figure 6 is Figure 5 the sectional view taken along the B-B direction in

[0025] Figure 7 is a schematic view when the ball joint fixing part and the ball joint are installed in the utility model;

[0026] Figure 8 is a schematic external view of the laser processing head;

[0027] Figure 9 is a control schematic view of the processor, the eddy current sensor and the alarm device;

[0028] In the figure: 1. Detection plate; 2. Sleeve; 3. Ball joint; 4. Ball joint fixing part; 41. Upper semi-fixed part; 42. Lower semi-fixed part; 5. Eddy current sensor; 6. Outer shell; 7. Bottom sealing plate; 8. Processor; 9. Alarm device; 10. Processing head; 11. Installation hole; 12. Arc-shaped notch. Detailed Embodiment

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model. Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meaning understood by those of ordinary skill in the field to which this disclosure pertains. The "upper", "lower", "left", "right", "front", "rear", "inside", "outside", etc. used in the specification and claims of this patent application of the present disclosure are only used to represent relative positional relationships. When the absolute position of the described object changes, the relative positional relationship also changes accordingly. The terms "connected" or "coupled" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Where the present utility model is not described in detail, it is common knowledge in the technical field of the present invention.

[0030] Embodiment 1:

[0031] As Figures 1-7As shown in the figure, a laser processing head collision reset mechanism of the present application includes a detection plate 1, a sleeve 2, a ball joint 3, a ball joint fixing member 4, an eddy current sensor 5, a housing 6 and a bottom sealing plate 7; through holes adapted to the outer side of the sleeve 2 are respectively opened at the centers of the detection plate 1 and the ball joint 3, and the detection plate 1 and the ball joint 3 are respectively sleeved on both sides of the sleeve 2. For the convenience of positioning and installation of the detection plate 1 and the ball joint 3 on the sleeve 2, stepped circles can be respectively opened on both sides of the sleeve 2, and then the detection plate 1 and the ball joint 3 are respectively sleeved at the two stepped circles; a through hole adapted to the outer side of the ball joint 3 is provided at the center of the ball joint fixing member 4, and the ball joint fixing member 4 is movably arranged on the outer side of the ball joint 3. The ball joint fixing member 4 can be further set into two parts, a lower semi-fixed member 41 and an upper semi-fixed member 42, which are fixed by screws for easy installation. The ball joint 3 can rotate, flip and roll slightly inside the ball joint fixing member 4. A plurality of arc-shaped notch 12 are arranged in a staggered manner along the circumference at the through hole of the detection plate 1. Through the setting of the arc-shaped notch 12, the detection plate 1 has weak rigidity at the central through hole, can undergo elastic deformation when subjected to an external force, and can restore the elastic deformation after the external force disappears; the housing 6 is arranged on the outer sides of the detection plate 1 and the ball joint fixing member 4 and is fixedly connected to the ball joint fixing member 4 by screws. The bottom sealing plate 7 is arranged at the bottom of the housing 6, and a through hole adapted to the outer side of the sleeve 2 is opened at its center and is sleeved on the outer side of the sleeve 2 to ensure the sealing inside the housing 6. In this embodiment, to improve the use effect of the entire mechanism, the detection plate 1 and the ball joint fixing member 4 are arranged in parallel, and the axial centerlines of the detection plate 1, the ball joint 3, the ball joint fixing member 4 and the sleeve 2 are on the same straight line. In this embodiment, the sleeve 2 is used to install the processing head. When the processing head is subjected to an external force, the sleeve 2 will be synchronously subjected to the external force. Therefore, the sleeve 2 will tend to swing with the center of the ball joint 3 as the swing center. Through the setting of the arc-shaped notch 12 with weak rigidity at the central through hole of the detection plate 1, the detection plate will undergo elastic deformation due to insufficient rigidity, thereby avoiding damage or damage to the processing head to a certain extent.

[0032] In this embodiment, for the convenience of manufacturing, assembling and maintaining the entire mechanism, the outer sides of the detection plate 1 and the ball joint fixing member 4 can be both rectangular, and the housing 6 and the bottom sealing plate 7 are also rectangular in a matching manner.

[0033] Embodiment 2

[0034] Based on Embodiment 1, a laser processing head collision reset mechanism of the present application, as Figures 4-6 and Figure 9As shown in the figure, on the detection board 1, at least two mounting holes 11 are radially opened towards its through hole, and at least two adjacent mounting holes 11 form a 90° angle. An eddy current sensor 5 is installed in each mounting hole 11. By the response ability of the eddy current sensor to the micro-vibration generated by the precision instrument, the deformation or vibration caused by external force at the through hole of the detection board 1 is monitored, that is, the displacement or vibration of the sleeve installed here is monitored. Taking the rectangular detection board 1 as an example, four mounting holes 11 are respectively opened along the diagonal of the rectangle, and the four mounting holes 11 are orthogonally distributed, which can effectively ensure that the eddy current sensor can detect the displacement or vibration in all directions of the sleeve.

[0035] In this embodiment, the collision reset mechanism may further include a processor 8. The processor 8 may be a control device of the laser processing equipment, or a processor connected to the control device of the laser processing equipment. Each eddy current sensor 5 is respectively connected to the processor 8 through a circuit for receiving the monitoring signal transmitted by the eddy current sensor 5. An alarm device 9 is connected to the processor 8 for sending an alarm signal to the outside when the eddy current sensor 5 detects deformation or vibration. The alarm device 9 may be a warning light, a buzzer, etc. In addition, when the eddy current sensor 5 detects the deformation or vibration of the detection board, that is, at this time, the processing head installed on the sleeve collides or is accidentally touched, the processor 8 can immediately start the reset program, such as stopping the processing of the laser processing head and displacement, controlling the processing head to displace in the opposite direction of the collision, etc., to reduce the degree of collision.

[0036] Embodiment 3

[0037] This embodiment provides a laser processing head equipped with the collision reset mechanism described in Embodiment 1 or 2, including a processing head 10. The processing head 10 is detachably connected to the sleeve 2 near the ball joint 3, and the axial center lines of the processing head 10 and the sleeve 2 are on the same straight line.

[0038] During installation, first install the ball joint 3 in the ball joint fixing part 4, and then sleeve the sleeve 2 into the central through hole of the ball joint 3; after respectively installing each eddy current sensor 5 into the mounting hole 11 inside the detection board 1, sleeve the other end of the sleeve 2 into the central through hole of the detection board 1 and clamp it tightly, and adjust the positions of each eddy current sensor 5 so that the eddy current sensor 5 can accurately detect the changes of the sleeve; then install the processing head 10 on the sleeve 2, install the outer shell 6 outside the detection board 1 and the ball joint fixing part 4, and finally install the bottom sealing plate 7 to ensure sealing.

[0039] Due to the weak rigidity of the arc-shaped notch 12 provided at the central through-hole of the detection plate 1, when the laser processing head operates normally, there is no relative movement between the sleeve 2 and the ball joint 3 inside the laser processing head. When the processing head is impacted, displacement occurs above the sleeve 2, the detection plate 1 deforms, and after the eddy current sensor 5 detects the displacement of the sleeve 2, it alarms to the outside through the processor, and at the same time, it can also trigger the emergency stop and reset program of the laser processing head. Since the deformation of the detection plate 1 is elastic deformation, when the external force disappears, the laser processing head can return to the normal state, that is, reset.

Claims

1. A collision reset mechanism for a laser processing head, characterized in that: include: A detection plate (1), a sleeve (2), a ball joint (3), a ball joint fixing member (4), a shell (6) and a bottom sealing plate (7); the detection plate (1) and the ball joint (3) are respectively provided with through holes at the center thereof, which are adapted to the outer side of the sleeve (2) and are respectively sleeved on both sides of the sleeve (2); the ball joint fixing member (4) is provided with a through hole at the center thereof, which is adapted to the outer side of the ball joint (3) and is movably provided on the outer side of the ball joint (3); the through hole of the detection plate (1) is provided with a plurality of arc-shaped notches (12) staggered along the circumference; the shell (6) is provided on the outer side of the detection plate (1) and the ball joint fixing member (4); the bottom sealing plate (7) is provided at the bottom of the shell (6); the through hole is provided with a through hole at the center thereof, which is adapted to the outer side of the sleeve (2) and is sleeved on the outer side of the sleeve (2).

2. The collision reset mechanism for a laser processing head according to claim 1, characterized in that: The detection plate (1) and the ball joint fixing member (4) are arranged in parallel, and the axial center lines of the detection plate (1), the ball joint (3), the ball joint fixing member (4) and the sleeve (2) are on the same straight line.

3. The collision reset mechanism for a laser processing head according to claim 1, characterized in that: The housing (6) is connected to the ball joint fixing member (4) via screws.

4. The collision reset mechanism for a laser processing head according to claim 1, characterized in that: The ball joint fixing member (4) comprises a detachably fixed lower semi-fixing member (41) and an upper semi-fixing member (42).

5. The collision reset mechanism for a laser processing head according to claim 1, characterized in that: The outer sides of the detection plate (1) and the ball joint fixing member (4) are both rectangular.

6. The collision reset mechanism for a laser processing head according to claim 1, characterized in that: Step circles are respectively provided on both sides of the sleeve (2), and the detection plate (1) and the ball joint (3) are respectively fitted on the two step circles.

7. A collision reset mechanism for a laser processing head according to any one of claims 1 to 6, characterized in that: At least two mounting holes (11) are radially opened on the detection plate (1) toward the through hole thereof, at least two adjacent mounting holes (11) form a 90° angle, and an eddy current sensor (5) is respectively installed in each mounting hole (11).

8. The collision reset mechanism for a laser processing head according to claim 7, characterized in that: There are four mounting holes (11) which are evenly arranged along the circumference of the through hole of the detection plate (1).

9. The collision reset mechanism for a laser processing head according to claim 7, characterized in that: It also includes a processor (8), each of the eddy current sensors (5) is connected to the processor (8) via a line, and the processor (8) is connected to an alarm device (9).

10. A laser processing head equipped with the collision reset mechanism according to any one of claims 1 to 9, comprising a processing head (10), characterized in that: The processing head (10) is detachably connected to the side of the sleeve (2) close to the ball joint (3), and the axial center lines of the processing head (10) and the sleeve (2) are on the same straight line.

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