Laser cutting head anti-collision device

Abstract

The application belongs to the technical field of laser cutting, and discloses a laser cutting head anti-collision device. The laser cutting head anti-collision device comprises a first mounting plate, a second mounting plate and a connecting assembly. The first mounting plate is mounted on a movable part. The first mounting plate is provided with a first assembly hole. The second mounting plate is used for mounting a laser cutting head. The connecting assembly comprises a clamping seat and a plurality of claw hook assemblies. The plurality of claw hook assemblies are arranged on the first mounting plate in a circumferential direction of the first assembly hole. The clamping seat is arranged on the second mounting plate. At least part of the clamping seat is inserted into the first assembly hole and is clamped with the claw hook assemblies. In the process of cutting a workpiece by the laser cutting head, when the edge of the workpiece is seriously warped or the residue is relatively hard, the laser cutting head collides with the workpiece or the residue. When the external force received by the laser cutting head is greater than the clamping force of the clamping seat and the claw hook assemblies, the clamping seat and the claw hook assemblies are separated. Hard collision of the laser cutting head with the workpiece or the residue is prevented, and the laser cutting head is effectively protected.

Description

Technical Field

[0001] This invention relates to the field of laser cutting technology, and more particularly to a laser cutting head anti-collision device. Background Technology

[0002] Laser cutting technology is widely used in metal processing, manufacturing, automotive industry and other fields. During the laser cutting process, especially when the laser cutting head moves at high speed, if the workpiece edge is severely warped or the residue is hard, the laser cutting head is prone to collision with the plate material on the machine tool, which can cause damage to the laser cutting head structure and failure of internal sealing, leading to core contamination and making the equipment unable to be used normally.

[0003] Existing laser cutting head anti-collision devices use a magnetic assembly to detachably attach the laser cutting head to the machine tool mounting plate. During normal cutting, the laser cutting head is held in place by the magnetic assembly, and in the event of a side impact, it can detach from the mounting plate to avoid damage from a hard collision. However, the magnetic assembly requires a high level of cleanliness in the working environment. Dust in the environment can weaken the magnetic force, causing the laser cutting head to easily shift or accidentally detach without a hard impact, resulting in poor reliability of the laser cutting head anti-collision device.

[0004] Therefore, there is an urgent need for a laser cutting head anti-collision device to solve the problems in the existing technology. Summary of the Invention

[0005] The purpose of this invention is to provide a laser cutting head anti-collision device that has low requirements for the cleanliness of the cutting process and is not affected by dust such as metal powder on site. At the same time, the laser cutting head can maintain higher positioning accuracy during installation and use, ensuring the stability of the laser cutting head's position during high-speed movement and operation, thereby improving cutting quality and accuracy.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Laser cutting head anti-collision device, including:

[0008] A first mounting plate is mounted on a movable component, and the first mounting plate is provided with a first assembly hole;

[0009] The second mounting plate is used to mount the laser cutting head;

[0010] A connecting component includes a retainer and a plurality of claw hook assemblies, wherein the plurality of claw hook assemblies are circumferentially spaced on the first mounting plate along the first mounting hole, and the retainer is disposed on the second mounting plate, wherein at least a portion of the retainer is inserted into the first mounting hole and engages with the claw hook assemblies;

[0011] When the external force on the laser cutting head is greater than the clamping force between the chuck and the claw hook assembly, the chuck and the claw hook assembly disengage.

[0012] Optionally, the card holder is provided with a card slot, and the claw hook assembly includes:

[0013] The claw seat has a first assembly cavity and a second assembly cavity that are interconnected, and a sealing plate is provided at the end of the second assembly cavity that is away from the first assembly cavity.

[0014] A claw hook is rotatably disposed within the first assembly cavity, and the claw hook is provided with a locking part;

[0015] A limiting block is slidably disposed within the second assembly cavity, with at least a portion of the limiting block pressing against the claw hook;

[0016] The first elastic member has one end abutting against the sealing plate and the other end abutting against the limiting block. The first elastic member is used to make the limiting block press against the claw hook so that the locking part is locked in the slot.

[0017] Optionally, the end of the claw hook away from the locking part is provided with a first mating inclined surface, and the limiting block is provided with a second mating inclined surface. When the locking part is locked in the slot, the first mating inclined surface can fit with the second mating inclined surface.

[0018] Optionally, the card holder is provided with a first guide surface, and the claw hook is provided with a second guide surface. While the first guide surface can slide along the second guide surface, the claw hook rotates along the rotation axis of the claw hook to guide the card holder to engage with the claw hook assembly.

[0019] Optionally, the first mounting plate is provided with a first mounting groove and a first back plate, the claw hook assembly is embedded in the first mounting groove, and the first back plate is attached to the first mounting plate and restricts the claw hook assembly from coming out of the first mounting groove.

[0020] Optionally, the laser cutting head further includes a rivet assembly for limiting the movement distance of the second mounting plate relative to the first mounting plate after the holder is disengaged from the claw hook assembly.

[0021] Optionally, one of the first mounting plate and the second mounting plate is provided with a positioning cone pin, and the other is provided with a positioning cone groove, wherein the positioning cone pin is inserted into the positioning cone groove.

[0022] Optionally, the laser cutting head anti-collision device further includes a switch assembly, which is communicatively connected to the movable part and the laser cutting head. After the card holder is disengaged from the claw hook assembly, the switch assembly is configured to send a circuit breaker signal to the movable part.

[0023] Alternatively, the switch assembly is communicatively connected to the laser cutting head, the laser cutting head is communicatively connected to the movable part, and after the holder is disengaged from the claw hook assembly, the switch assembly is configured to send a circuit breaker signal to the laser cutting head.

[0024] Optionally, the switch assembly includes at least two first contacts and at least two second contacts, the two first contacts being spaced apart on the first mounting plate and insulated from the first mounting plate, and the two second contacts being spaced apart on the second mounting plate and insulated from the second mounting plate;

[0025] When the card holder is engaged with the claw hook assembly, the first contact and the second contact are electrically connected in a one-to-one correspondence to form at least one closed circuit.

[0026] Optionally, the switching assembly further includes:

[0027] The third contact is provided on the first mounting plate with a third assembly cavity. The third contact and the first contact are disposed opposite to each other in the third assembly cavity. The third contact is electrically connected to the power supply.

[0028] The second elastic element has two ends that abut against the first contact and the third contact, respectively. The second elastic element is used to electrically connect the third contact and the first contact, and to provide contact pressure for the first contact to contact the second contact.

[0029] Beneficial effects:

[0030] The laser cutting head anti-collision device provided by this invention has a claw hook assembly and a card holder locking structure that has low requirements for the cleanliness of the cutting process and is not affected by dust such as metal powder on site. At the same time, the laser cutting head can maintain higher positioning accuracy during installation and use, ensuring the stability of the laser cutting head's position during high-speed movement and operation, thereby improving the cutting quality and accuracy. Attached Figure Description

[0031] Figure 1 This is an exploded view of the laser cutting head anti-collision device provided by the present invention;

[0032] Figure 2 This is a perspective view of the claw hook assembly provided by the present invention installed on the first mounting plate;

[0033] Figure 3 This is a schematic diagram of the structure of the claw hook assembly provided by the present invention when it is installed on the first mounting plate;

[0034] Figure 4 This is a cross-sectional view of the laser cutting head anti-collision device provided by the present invention;

[0035] Figure 5 yes Figure 4 Enlarged view of a portion of the image;

[0036] Figure 6 This is a schematic diagram of the anti-collision device for laser cutting heads provided by the present invention from a certain perspective;

[0037] Figure 7 This is a schematic diagram of the structure of the switching assembly provided by the present invention;

[0038] Figure 8 This is a partial enlarged view of the process of the laser cutting head anti-collision device holder and the claw hook assembly disengaging from each other during the process provided by the present invention;

[0039] Figure 9 This is a schematic diagram of the structure in which the laser cutting head detaches from the first mounting plate along with the second mounting plate when the laser cutting head is subjected to an impact force along the first direction.

[0040] Figure 10 This is a schematic diagram of the structure in which the laser cutting head detaches from the first mounting plate along with the second mounting plate when the laser cutting head is subjected to an impact force along the second direction.

[0041] In the picture:

[0042] 10. Laser cutting head;

[0043] 100. First mounting plate; 110. First mounting groove; 111. Third limiting surface; 120. First back plate; 121. Second through hole; 130. Positioning cone pin; 140. Limiting groove;

[0044] 200. Second mounting plate; 210. Positioning cone groove; 220. Limiting block; 221. Protrusion; 2211. First inclined surface; 2212. Second inclined surface;

[0045] 300. Connecting component; 310. Card holder; 311. Card slot; 3111. Second limiting surface; 3112. First guide surface; 312. First through hole; 320. Claw hook assembly; 321. Claw seat; 3211. First assembly cavity; 3212. Second assembly cavity; 322. Claw hook; 3221. First limiting surface; 3222. First mating slope; 3223. Second guide surface; 323. Restricting block; 3231. Second mating slope; 324. First elastic element; 325. Sealing plate; 326. First pin;

[0046] 400. Rivet assembly; 410. Rivet; 420. Nut;

[0047] 500, Switch assembly; 510, First contact; 520, Second contact; 530, Second elastic element; 540, Third contact; 550, First insulating ring; 560, Second insulating ring; 570, Third insulating ring. Detailed Implementation

[0048] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0049] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0050] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0051] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0052] This embodiment provides a laser cutting head anti-collision device, such as... Figures 1-10As shown, the laser cutting head anti-collision device includes a first mounting plate 100, a second mounting plate 200, and a connecting assembly 300. The first mounting plate 100 is mounted on a movable part and has a first mounting hole. The second mounting plate 200 is used to mount the laser cutting head 10. The connecting assembly 300 includes a retainer 310 and multiple claw hook assemblies 320. The multiple claw hook assemblies 320 are circumferentially spaced on the first mounting plate 100 along the first mounting hole. The retainer 310 is disposed on the second mounting plate 200. At least a portion of the mounting bracket 310 is inserted into the first mounting hole and engaged with the claw hook assembly 320. During the process of the laser cutting head 10 cutting the workpiece, if the edge of the workpiece is severely warped or the residue is hard, the laser cutting head 10 collides with the workpiece or residue. When the external force on the laser cutting head 10 is greater than the engaging force between the mounting bracket 310 and the claw hook assembly 320, the mounting bracket 310 disengages from the claw hook assembly 320, preventing the laser cutting head 10 from colliding hard with the workpiece or residue, and effectively protecting the laser cutting head 10.

[0053] In this embodiment, the engagement structure between the claw hook assembly 320 and the card holder 310 has lower requirements for the cleanliness of the cutting process and will not be affected by dust such as metal powder on site. At the same time, the laser cutting head 10 can maintain higher positioning accuracy during installation and use, ensuring the stability of the position of the laser cutting head 10 during high-speed movement and operation, thereby improving the cutting quality and accuracy.

[0054] Optionally, such as Figure 4 As shown, the card holder 310 is provided with a card slot 311. The claw hook assembly 320 includes a claw seat 321, a claw hook 322, a limiting block 323, and a first elastic element 324. The claw seat 321 is provided with a first assembly cavity 3211 and a second assembly cavity 3212 that are interconnected. The end of the second assembly cavity 3212 facing away from the first assembly cavity 3211 is provided with a sealing plate 325. The claw hook 322 is rotatably disposed in the first assembly cavity 3211 through a first pin 326. The claw hook 322 is provided with a locking mechanism. The limiting block 323 is slidably disposed in the second assembly cavity 3212. At least part of the limiting block 323 can pass through the first assembly cavity 3211 and press against the claw hook 322. One end of the first elastic member 324 abuts against the sealing plate 325 and the other end abuts against the limiting block 323. The first elastic member 324 is used to make the limiting block 323 press against the claw hook 322 so that the locking part is locked in the slot 311, ensuring the stability of the laser cutting head 10 during the cutting of the workpiece, thereby improving the cutting quality.

[0055] Optionally, such as Figures 4-5As shown, the second assembly cavity 3212 has an opening at one end opposite to the first assembly cavity 3211. A sealing plate 325 is provided at the opening, and the sealing plate 325 is detachably connected to the claw seat 321. One end of the first elastic member 324 abuts against the sealing plate 325, and the other end abuts against the limiting block 323. The detachable installation of the sealing plate 325 at the opening facilitates the assembly of the limiting block 323 and the first elastic member 324, effectively improving assembly efficiency.

[0056] Optionally, such as Figure 5 As shown, the snap-fit ​​part is provided with a first limiting surface 3221, and the snap-fit ​​groove 311 is provided with a second limiting surface 3111. When the snap-fit ​​part is snapped into the snap-fit ​​groove 311, the first limiting surface 3221 and the second limiting surface 3111 fit together, thereby further ensuring that the laser cutting head 10 on the second mounting plate 200 is more stable.

[0057] Optionally, such as Figure 5 As shown, the end of the claw hook 322 away from the locking part is provided with a first mating inclined surface 3222, and the limiting block 323 is provided with a second mating inclined surface 3231. When the locking part is locked in the slot 311, the first mating inclined surface 3222 can fit with the second mating inclined surface 3231, which can further ensure the stability of the claw hook 322. After the laser cutting head 10 is hit, the claw hook 322 is allowed to rotate so that the card holder 310 can be dislodged from the claw hook assembly 320, thus avoiding the risk of damage to the structure of the laser cutting head 10 due to hard impact.

[0058] Optionally, the chuck 310 is provided with a first guide surface 3112, and the claw hook 322 is provided with a second guide surface 3223. While the first guide surface 3112 can slide along the second guide surface 3223, the claw hook 322 rotates along its own rotation axis to guide the chuck 310 to reset. Specifically, when the laser cutting head 10 is impacted, the chuck 310 disengages from the claw hook assembly 320. The operator intervenes in time to clean up the residue or handle the raised workpiece. After the handling is completed, the operator presses the chuck 310 into the claw hook assembly 320. During the pressing process, the first guide surface 3112 slides along the second guide surface 3223. During this process, the claw hook 322 rotates along its own rotation axis until the first limiting surface 3221 of the claw hook 322 fits against the second limiting surface 3111 on the chuck groove 311, completing the engagement between the chuck 310 and the claw hook assembly 320, and realizing the rapid reset of the chuck 310.

[0059] In this embodiment, the first elastic element 324 is a spring, which can ensure that the limiting block 323 is always in close contact with the claw hook 322, so that the claw hook 322 remains stable during normal operation.

[0060] Optionally, the sealing plate 325 is fastened to the claw seat 321 with screws, which facilitates the disassembly and installation of the sealing plate 325 and improves the assembly efficiency of the claw hook assembly 320.

[0061] Optionally, the first mounting plate 100 is provided with a first mounting groove 110 and a first back plate 120. The claw hook assembly 320 is embedded in the first mounting groove 110, and the first back plate 120 is attached to the first mounting plate 100 and restricts the claw hook assembly 320 from coming out of the first mounting groove 110, so as to ensure the stability of the claw hook assembly 320. During assembly, the claw hook assembly 320 is first placed into the first mounting groove 110, then the first back plate 120 is attached to the first mounting plate 100 and the groove opening of the first mounting groove 110 is sealed. Finally, the first back plate 120 is fastened to the first mounting plate 100 with screws to complete the fixation of the claw hook assembly 320.

[0062] Optionally, the claw seat 321 is provided with a positioning pin, and the first mounting plate 100 is provided with a positioning hole. When the claw seat 321 is installed in the first mounting groove 110, the positioning pin is inserted into the positioning hole to position the installation position of the claw hook assembly 320, so as to prevent the claw hook assembly 320 from being displaced during use, thereby ensuring the stability and reliability of the claw hook assembly 320 and the card seat 310.

[0063] In this embodiment, the card holder 310 is an annular card holder 310. The second mounting plate 200 is provided with a second assembly hole. The annular card holder 310 is assembled in the second assembly hole and fastened to the second mounting plate 200 with screws to ensure that the annular card holder 310 is more stable.

[0064] Optionally, the laser cutting head 10 also includes a rivet assembly 400, which limits the movement distance of the second mounting plate 200 relative to the first mounting plate 100 after the cassette 310 is disengaged from the claw hook assembly 320, thereby preventing the laser cutting head 10 from falling onto the worktable and protecting the workpiece and the laser cutting head 10.

[0065] Optionally, such as Figure 5As shown, the mounting base 310 has a first through hole 312, and the first back plate 120 has a second through hole 121. The rivet assembly 400 includes a rivet 410 and a nut 420. The rivet 410 is movably inserted through the first through hole 312 and the second through hole 121 and threadedly connected to the nut 420. After the rivet assembly 400 is installed, the rivet head of the rivet 410 is located on the side of the mounting base 310 away from the first back plate 120, and the nut 420 is located on the side of the first back plate 120 away from the mounting base 310, thereby preventing the rivet assembly 400 from coming out of the first through hole 312 and the second through hole 121. Furthermore, the distance between the rivet head of the rivet 410 and the nut 420 is greater than the distance between the plane containing the first through hole 312 and the plane containing the second through hole 121 after the mounting base 310 is engaged with the claw hook assembly 320, thereby limiting the disengagement distance of the second mounting plate 200 relative to the first mounting plate 100. The rivet assembly 400 has strong rigidity and impact resistance, which can effectively alleviate the impact force during the collision of the laser cutting head 10, and at the same time provide reliable support for the laser cutting head 10 after it is detached.

[0066] Optionally, one of the first mounting plate 100 and the second mounting plate 200 is provided with a positioning cone pin 130, and the other is provided with a positioning cone groove 210. The positioning cone pin 130 is inserted into the positioning cone groove 210, which can accurately position the first mounting plate 100 on the second mounting plate 200, and when the laser cutting head 10 is subjected to an impact force in the first direction, the second mounting plate 200 rotates and disengages along the positioning cone pin 130.

[0067] like Figure 6 As shown, the first mounting plate 100 has limiting grooves 140 on both sides, and the second mounting plate 200 has limiting blocks 220 on both sides. Each limiting block 220 has a protrusion 221, and the upper and lower sides of the protrusion 221 have a first inclined surface 2211 and a second inclined surface 2212, respectively. When the second mounting plate 200 is attached to the first mounting plate 100, the limiting blocks 220 are inserted into the limiting grooves 140, and the top of the protrusion 221 abuts against the bottom of the limiting groove 140. Figures 8-9 As shown, when the laser cutting head 10 is subjected to an impact force in the first direction, the second mounting plate 200 will rotate and disengage along the inclined surface of the positioning cone pin 130. During this process, the second mounting plate 200 rotates about the top of the protrusion 221 as an axis, rotating until the first inclined surface 2211 on the left side is in contact with the bottom of the limiting groove 140, and the second inclined surface 2212 on the right side is in contact with the bottom of the limiting groove 140; or, the second inclined surface 2212 on the left side is in contact with the bottom of the limiting groove 140, and the first inclined surface 2211 on the right side is in contact with the bottom of the limiting groove 140, reaching the limiting state, and the limiting block 220 stops rotating (e.g. Figure 9As shown); under the influence of gravity of the laser cutting head, the second mounting plate 200 completely detaches from the first mounting plate 100, and the connection is achieved by the rivet assembly 400 (as shown). Figure 10 As shown), thus effectively protecting the laser cutting head 10. When the laser cutting head 10 is subjected to an impact force in the second direction, the holder 310 directly disengages from the claw hook assembly 320, and is reconnected by the pull stud assembly 400 (as shown). Figure 10 As shown in the figure, in this embodiment, the first direction is perpendicular to the second direction.

[0068] Optionally, the switch assembly 500 is communicatively connected to the laser cutting head 10, and the laser cutting head 10 is communicatively connected to the movable part. After the chuck 310 is disengaged from the claw hook assembly 320, the switch assembly 500 sends a circuit breaker signal to the laser cutting head 10. Upon receiving the circuit breaker signal, the laser cutting head 10 and the movable part stop simultaneously, preventing the laser cutting head 10 from cutting other parts of the workpiece, effectively protecting the workpiece, preventing miscutting caused by the laser cutting head 10 deviating from the predetermined track, improving processing accuracy and safety, and reducing scrap rate and production losses.

[0069] In one embodiment, the laser cutting head anti-collision device further includes a switch assembly 500, which is communicatively connected to a movable part and the movable part is communicatively connected to the laser cutting head 10. After the chuck 310 is disengaged from the claw hook assembly 320, the switch assembly 500 sends a circuit breaker signal to the movable part. After receiving the circuit breaker signal, the movable part and the laser cutting head 10 stop simultaneously to prevent accidental cutting caused by the cutting head deviating from the predetermined track, thereby improving processing accuracy and safety.

[0070] The laser cutting head anti-collision device provided in this embodiment can make the movable part the first to receive the circuit break signal, or the laser cutting head the first to receive the circuit break signal, so that the movable part and the laser cutting head 10 can be stopped quickly after the cassette 310 is disengaged from the claw hook assembly 320. This provides users with a variety of flexible options and improves the applicability of the laser cutting head 10 anti-collision device.

[0071] Optionally, such as Figure 7As shown, the switch assembly 500 includes at least two first contacts 510 and at least two second contacts 520. The two first contacts 510 are spaced apart on the first mounting plate 100 and are insulated from the first mounting plate 100. The two second contacts 520 are spaced apart on the second mounting plate 200 and are insulated from the second mounting plate 200. When the card holder 310 is engaged with the claw hook assembly 320, the second mounting plate 200 is attached to the first mounting plate 100. At this time, the first contacts 510 and the second contacts 520 are electrically connected in a one-to-one correspondence to form at least one closed circuit. When the laser cutting head 10 collides, the first contacts 510 and the second contacts 520 separate, the closed circuit is broken, and the movable part stops, thereby further protecting the laser cutting head 10.

[0072] Optionally, the switch assembly 500 further includes a third contact 540 and a second elastic member 530. A third mounting cavity is provided on the first mounting plate 100. The third contact 540 and the first contact 510 are disposed opposite each other within the third mounting cavity. The two ends of the second elastic member 530 abut against the first contact 510 and the third contact 540, respectively. The first contact 510, the second contact 520, the second elastic member 530, and the third contact 540 form a closed circuit. The second elastic member 530 is used to electrically connect the third contact 540 and the first contact 510, and to provide contact pressure for the first contact 510 to contact the second contact 520, thereby avoiding rigid contact between the first contact 510 and the second contact 520 and ensuring the stability of the connection between the first contact 510 and the second contact 520, further improving the reliability of the switch assembly 500. The contacts of the switch assembly 500 have a mechanical contact structure, resulting in accurate signal output, long service life, low environmental cleanliness requirements, and adaptability to various environmental conditions.

[0073] In this embodiment, the first contact 510 and the third contact 540 are insulatedly connected to the first mounting plate 100 through the first insulating ring 550 and the third insulating ring 570, respectively, and the second contact 520 is insulatedly connected to the second mounting plate 200 through the second insulating ring 560.

[0074] Optionally, the first mounting plate 100 is provided with a first wire groove and a first connector mounting groove. A first set of wires is provided in the first wire groove, and a first connector is provided in the first connector mounting groove. One end of the first set of wires is electrically connected to the first contact 510, and the other end is electrically connected to the first connector. The second mounting plate 200 is provided with a second wire groove and a second connector mounting groove. A second set of wires is provided in the second wire groove, and a second connector is provided in the second connector mounting groove. One end of the second set of wires is electrically connected to the second contact 520, and the other end is electrically connected to the second connector. The first connector and the second connector are electrically connected to form a closed loop. When the first contact 510 and the second contact 520 are separated, the closed loop is broken. In this embodiment, the second mounting plate 200 has a second back plate on the side facing away from the first mounting plate 100. The second back plate can seal the second wire groove, thereby effectively protecting the second set of wires in the second wire groove from external environmental corrosion.

[0075] Specifically, the impact separation process of the laser cutting head anti-collision device provided in this embodiment is as follows:

[0076] When the workpiece edge is severely warped or the residue is hard, the laser cutting head 10 will detach upon impact, causing the chuck 310 to separate from the claw hook assembly 320, the second mounting plate 200 to separate from the first mounting plate 100, and simultaneously the first contact 510 to separate from the second contact 520. A circuit disconnection signal is issued, and the machine tool begins an emergency stop to prevent further equipment damage. During the disengagement of the chuck 310 from the claw hook assembly 320, the claw hook 322 rotates around the first pin 326. During rotation, the first elastic element 324 is compressed by the limiting block 323. When the rotation reaches a certain angle, the limiting block 323 stops moving relative to the first elastic element 324, and the compression of the first elastic element 324 is fixed. The claw hook 322 continues to rotate to the third limiting surface 111 within the first mounting groove 110, reaching the limiting state. Figure 10 At this point, the card holder 310 is completely disengaged from the claw hook assembly 320, and the connection is achieved by the pull stud assembly 400. When the card holder 310 is disengaged from the claw hook assembly 320, the first contact 510 and the second contact 520 separate, the circuit is broken, and the movable parts and the laser cutting head 10 stop simultaneously, improving the safety of the laser cutting machine.

[0077] Compared to the magnetic suction component solution, the cooperation mechanism between the claw hook component 320 and the card holder 310 has better positioning accuracy and service life, while having lower requirements for the cleanliness of the cutting process and not being affected by dust such as metal powder on site.

[0078] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A laser cutting head anti-collision device, characterized in that, include: A first mounting plate (100) is mounted on a movable part, and the first mounting plate (100) is provided with a first mounting hole; The second mounting plate (200) is used to mount the laser cutting head (10); The connecting assembly (300) includes a retainer (310) and a plurality of claw hook assemblies (320), wherein the plurality of claw hook assemblies (320) are circumferentially spaced on the first mounting plate (100) and the retainer (310) is disposed on the second mounting plate (200), and at least a portion of the retainer (310) is inserted into the first mounting hole and engaged with the claw hook assembly (320); When the external force on the laser cutting head (10) is greater than the clamping force between the card holder (310) and the claw hook assembly (320), the card holder (310) will disengage from the claw hook assembly (320). The card holder (310) is provided with a card slot (311), and the claw hook assembly (320) includes: The claw seat (321) is provided with a first assembly cavity (3211) and a second assembly cavity (3212) that are interconnected. The end of the second assembly cavity (3212) opposite to the first assembly cavity (3211) is provided with a sealing plate (325). A claw hook (322) is rotatably disposed in the first assembly cavity (3211), and the claw hook (322) is provided with a snap-fit ​​part; A limiting block (323) is slidably disposed in the second assembly cavity (3212), and at least part of the limiting block (323) abuts against the claw hook (322); The first elastic member (324) abuts against the sealing plate (325) at one end and against the limiting block (323) at the other end. The first elastic member (324) is used to make the limiting block (323) press against the claw hook (322) so that the snap-fit ​​part is snapped into the slot (311).

2. The laser cutting head anti-collision device according to claim 1, characterized in that, The claw hook (322) has a first mating inclined surface (3222) at one end away from the snap-fit ​​part, and the limiting block (323) has a second mating inclined surface (3231). When the snap-fit ​​part is snapped into the snap-fit ​​groove (311), the first mating inclined surface (3222) can fit with the second mating inclined surface (3231).

3. The laser cutting head anti-collision device according to claim 1, characterized in that, The card holder (310) is provided with a first guide surface (3112), and the claw hook (322) is provided with a second guide surface (3223). While the first guide surface (3112) can slide along the second guide surface (3223), the claw hook (322) rotates along the rotation axis of the claw hook (322) to guide the card holder (310) to engage with the claw hook assembly (320).

4. The laser cutting head anti-collision device according to claim 1, characterized in that, The first mounting plate (100) is provided with a first mounting groove (110) and a first back plate (120). The claw hook assembly (320) is embedded in the first mounting groove (110). The first back plate (120) is attached to the first mounting plate (100) and restricts the claw hook assembly (320) from coming out of the first mounting groove (110).

5. The laser cutting head anti-collision device according to claim 1, characterized in that, The laser cutting head anti-collision device further includes a rivet assembly (400), which is used to limit the movement distance of the second mounting plate (200) relative to the first mounting plate (100) after the card holder (310) is disengaged from the claw hook assembly (320).

6. The laser cutting head anti-collision device according to claim 1, characterized in that, One of the first mounting plate (100) and the second mounting plate (200) is provided with a positioning cone pin (130), and the other is provided with a positioning cone groove (210). The positioning cone pin (130) is inserted into the positioning cone groove (210).

7. The laser cutting head anti-collision device according to claim 1, characterized in that, The laser cutting head anti-collision device also includes a switch assembly (500), which is communicatively connected to the movable part and the movable part is communicatively connected to the laser cutting head (10). After the card holder (310) is disengaged from the claw hook assembly (320), the switch assembly (500) is configured to send a circuit breaker signal to the movable part. Alternatively, the switch assembly (500) is communicatively connected to the laser cutting head (10), the laser cutting head (10) is communicatively connected to the movable part, and after the card holder (310) is disengaged from the claw hook assembly (320), the switch assembly (500) is configured to send a circuit breaker signal to the laser cutting head (10).

8. The laser cutting head anti-collision device according to claim 7, characterized in that, The switch assembly (500) includes at least two first contacts (510) and at least two second contacts (520). The at least two first contacts (510) are spaced apart on the first mounting plate (100) and are insulated from the first mounting plate (100). The at least two second contacts (520) are spaced apart on the second mounting plate (200) and are insulated from the second mounting plate (200). When the card holder (310) is engaged with the claw hook assembly (320), the first contact (510) and the second contact (520) are electrically connected in a one-to-one correspondence to form at least one closed circuit.

9. The laser cutting head anti-collision device according to claim 8, characterized in that, The switching assembly (500) further includes: The third contact (540) is provided on the first mounting plate (100) with a third assembly cavity. The third contact (540) and the first contact (510) are disposed opposite to each other in the third assembly cavity. The third contact (540) is electrically connected to the power supply and is insulated from the first mounting plate (100). The second elastic element (530) has two ends that abut against the first contact (510) and the third contact (540) respectively. The first contact (510), the second contact (520), the second elastic element (530) and the third contact (540) constitute the closed circuit.

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