Laser head based on collision protection and laser processing device

Abstract

This utility model discloses a laser head and laser processing equipment based on collision protection. The laser head based on collision protection includes a fixed part, a movable part, a magnetic connecting device, and a sensing device. The fixed part is installed on the object to be fixed and has horizontally arranged and mutually perpendicular X and Y directions, and a Z direction perpendicular to the X and Y directions. The movable part is located below the fixed part. The bottom of the fixed part has a first inclined surface inclined along the X direction, and the top of the movable part has a second inclined surface parallel to the first inclined surface. The first and second inclined surfaces are joined together. The magnetic connecting device is located between the fixed part and the movable part for magnetically adsorbing and fixing the fixed part and the movable part. The sensing device is used to sense and identify when the movable part detaches from the fixed part. The laser head based on collision protection of this utility model can sense and identify when the bottom of the laser head is impacted in the X, Y, and Z directions, and protect the laser head from damage.

Description

Technical Field

[0001] This utility model relates to the technical field of laser processing, and in particular to a laser head and laser processing equipment based on collision protection. Background Technology

[0002] In recent years, lasers have been widely used as a processing tool in fields such as cutting, welding, and additive manufacturing.

[0003] In new energy manufacturing, laser welding is used for battery sealing welding. In traditional laser welding methods, the battery cell is loaded on the fixture, and the fixture and the laser head perform relative rotation, translation and lifting movements to complete the welding around the entire battery cell and the cutting of the workstation.

[0004] However, during the relative movement between the fixture and the laser head, the bottom of the laser head is easily damaged by collisions in the X, Y, and Z directions from the fixture or machine. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a laser head based on collision protection, which can sense collisions to the bottom of the laser head in the X, Y, and Z directions and protect the laser head from damage.

[0006] This invention also proposes a laser processing device with the aforementioned collision-protected laser head.

[0007] A collision-protected laser head according to a first aspect embodiment of the present invention includes:

[0008] The fixing part is installed on the object to be fixed and has horizontally arranged and mutually perpendicular X and Y directions, and a Z direction perpendicular to the X and Y directions;

[0009] The movable part is located below the fixed part;

[0010] The bottom of the fixed part is provided with a first inclined surface that is inclined along the X direction, and the top of the movable part is provided with a second inclined surface that is parallel to the first inclined surface. The first inclined surface and the second inclined surface are joined together.

[0011] A magnetic connection device is disposed between the fixed part and the movable part for magnetically adsorbing and fixing the fixed part and the movable part;

[0012] A sensing device is used to sense and identify when the movable part detaches from the fixed part.

[0013] The collision-protected laser head according to the embodiments of the present invention has at least the following beneficial effects:

[0014] 1. This utility model features a first inclined surface at the bottom of the fixed part, tilted along the X direction, and a second inclined surface parallel to the first inclined surface at the top of the movable part. The first and second inclined surfaces are joined together, and a magnetic connecting device is provided between the fixed part and the movable part to magnetically attract and fix them together. It can be understood that the fixed part and the movable part are magnetically attracted and fixed together by the inclined surface joining structure of the first and second inclined surfaces combined with the magnetic connecting device. When the movable part is impacted in the X and Y directions, it can swing along the edge of the joint between the first and second inclined surfaces and detach from the fixed part. When the movable part is impacted in the Z direction, it can also slide along the first inclined surface and detach from the fixed part. This avoids rigid impact damage to the laser head and helps protect the laser head from impacts in the X, Y, and Z directions, reducing damage to the laser head.

[0015] 2. This utility model uses a sensing device to detect and identify the detachment state of the moving part in real time, and promptly obtains information about the collision of the moving part. It can be combined with an alarm to trigger a collision alarm, and can also be combined with a controller to control the laser processing equipment to stop suddenly, preventing the laser head from continuing to move after being collided and causing secondary damage, thus reducing further damage to the laser head.

[0016] According to some embodiments of the present invention, a positioning component is provided between the first inclined surface and the second inclined surface, the positioning component being used to position the engagement of the fixed part and the movable part.

[0017] The advantages of this invention are: by setting a positioning component between the first inclined surface and the second inclined surface, the positioning component is used to position the cooperation between the fixed part and the movable part. Thus, on the one hand, the positioning component can ensure that the movable part can be reset along the fixed trajectory after a collision, avoiding laser optical path deviation or connection failure due to misalignment. On the other hand, during normal operation, the positioning component can prevent the movable part from sliding relative to the fixed part, ensuring welding accuracy.

[0018] According to some embodiments of the present invention, the positioning component includes an arc-shaped groove and a first positioning member. The arc-shaped groove is disposed in one of the fixed part and the movable part, and the first positioning member is disposed in the other of the fixed part and the movable part. The first positioning member has an arc-shaped protrusion, and the arc-shaped protrusion cooperates with the arc-shaped groove for positioning.

[0019] The advantages of this invention are: by including an arc-shaped groove and a first positioning member in the positioning component, the arc-shaped groove is disposed in one of the fixed part and the movable part, and the first positioning member is disposed in the other of the fixed part and the movable part. The first positioning member has an arc-shaped protrusion, which cooperates with the arc-shaped groove for positioning. It can be understood that the arc-shaped groove can guide the arc-shaped protrusion to automatically center, thereby improving positioning efficiency. In addition, when the movable part is impacted and slides along the first inclined surface, the arc-shaped protrusion can smoothly disengage from the arc-shaped groove along the arc-shaped trajectory of the arc-shaped groove, avoiding jamming of the arc-shaped protrusion and the arc-shaped groove, which would prevent the movable part from disengaging from the fixed part and thus damage the movable part.

[0020] According to some embodiments of the present invention, the arc-shaped groove is disposed on one of the fixed part and the movable part, and the other of the fixed part and the movable part is provided with a first sliding hole for accommodating the first positioning member to slide closer to and away from the arc-shaped groove. The positioning assembly further includes a first spring, which is disposed between the bottom wall of the first positioning member and the first sliding hole, and the first spring is used to support the first positioning member to cooperate with the arc-shaped groove.

[0021] The advantages of this invention are: by setting an arc-shaped groove on one of the fixed part and the movable part, and providing a first sliding hole for the first positioning member to slide closer to and away from the arc-shaped groove in the other of the fixed part and the movable part, the positioning assembly also includes a first spring, which is disposed between the first positioning member and the bottom wall of the first sliding hole. The first spring is used to support the first positioning member in cooperation with the arc-shaped groove. It can be understood that the first spring provides flexible support for the first positioning member. When the movable part is not collided, the first spring can support the first positioning member to contact and position with the arc-shaped groove. When the movable part is collided and slides along the first inclined surface, the first positioning member is squeezed by the first inclined surface, which can compress the first spring, so that the first positioning member can retract into the first sliding hole, avoiding the first positioning member from damaging the fixed part and hindering the sliding of the movable part on the first inclined surface, which helps to reduce component damage.

[0022] According to some embodiments of the present invention, at least two sensing devices are provided, and the at least two sensing devices are respectively provided on both sides of the joint between the first inclined surface and the second inclined surface along the X direction or the Y direction.

[0023] The advantage of this invention is that by setting at least two sensing devices respectively on both sides of the joint between the first and second inclined surfaces along the X or Y direction, it can be understood that when the movable part is impacted in the X direction, it will initially swing away from the fixed part along one side of the joint between the first and second inclined surfaces in the X direction. At this time, the movable part will change position relative to the first inclined surface along the other three directions of the joint between the first and second inclined surfaces. When the movable part is impacted in the Y direction, it will initially swing away from the fixed part along one side of the joint between the first and second inclined surfaces in the Y direction. At this time, the movable part will change position relative to the first inclined surface along the other three directions of the joint between the first and second inclined surfaces. The edges in the three outer directions will change position relative to the first inclined plane. When the movable part is hit by a collision in the Z direction, the movable part will slide upward along the first inclined plane and detach from the fixed part. At this time, the edges of the movable part in the four directions along the joint of the first and second inclined planes will change position relative to the first inclined plane. Therefore, by setting at least two sensing devices respectively on both sides of the joint of the first and second inclined planes along the X or Y direction, the movable part can be detected and identified by at least one sensing device when it is hit by a collision in any of the X, Y, and Z directions. This avoids the sensing device missing a sensing and failing to detect the movable part detaching from the fixed part.

[0024] According to some embodiments of the present invention, at least two of the sensing devices are located on both sides of the joint between the first inclined surface and the second inclined surface along the inclination direction of the first inclined surface.

[0025] The advantages are: By placing at least two sensing devices on either side of the joint between the first and second inclined surfaces along the inclination direction of the first inclined surface, it can be understood that the joint between the first and second inclined surfaces is inclined along the X direction, making it easier for the movable part to detach when it is impacted in the X direction. Setting the X direction as the direction in which the laser head makes the most frequent relative translational movements with respect to the fixture, that is, setting the X direction as the workstation separation direction, maximizes the probability of the movable head being impacted in the X direction. Thus, the movable part has a greater probability of being impacted and detached in the direction where it is more likely to detach, which helps to further reduce the risk of damage to the laser head from impact. At the same time, after the movable part is impacted, the displacement amplitude at the joint edge opposite to the swing axis of the movable part along the joint between the first and second inclined surfaces is the largest. The sensing device at this point can detect the movable part detaching from the fixed part more quickly, thereby making the sensing response of the sensing device faster.

[0026] According to some embodiments of the present invention, the sensing device includes a target element and a sensing element for sensing changes in the position of the target element. The target element is disposed in one of the fixed part and the movable part, and the sensing element is disposed in the other of the fixed part and the movable part.

[0027] The advantages of this invention are: by making the sensing device include a target element and a sensing element for sensing changes in the position of the target element, the target element is set in one of the fixed part and the movable part, and the sensing element is set in the other of the fixed part and the movable part. Thus, on the one hand, the target element and the sensing element are separately placed in the fixed part and the movable part, the wiring is simple and avoids the cable tangling when the movable part moves. On the other hand, the target element and the sensing element adopt non-contact sensing, there is no mechanical wear, and the sensing device responds quickly.

[0028] According to some embodiments of the present invention, the magnetic connection device includes a first magnetic attractor and a second magnetic attractor. The first magnetic attractor is disposed on the first inclined surface, and the second magnetic attractor is disposed on the second inclined surface. The first magnetic attractor and the second magnetic attractor are magnetically attracted to each other.

[0029] The advantage of this invention is that by including a first magnetic attractor and a second magnetic attractor in the magnetic connection device, with the first magnetic attractor disposed on the first inclined surface and the second magnetic attractor disposed on the second inclined surface, the first magnetic attractor and the second magnetic attractor magnetically attract each other, thereby making the magnetic attraction of the magnetic connection device to the fixed part and the movable part more stable.

[0030] According to some embodiments of the present invention, the number of the first magnetic attracting members is set to multiple, and the multiple first magnetic attracting members are arranged circumferentially along the central axis of the first inclined surface. The number of the second magnetic attracting members is correspondingly set to multiple, and the multiple second magnetic attracting members are arranged circumferentially along the central axis of the second inclined surface. The first magnetic attracting members and the second magnetic attracting members are aligned one by one.

[0031] The advantages of this invention are as follows: By setting multiple first magnetic attractors arranged circumferentially along the central axis of the first inclined plane, and correspondingly setting multiple second magnetic attractors arranged circumferentially along the central axis of the second inclined plane, with the first and second magnetic attractors aligned one-to-one, the magnetic attraction force of the magnetic connection device is evenly distributed, preventing wear of the first or second inclined plane due to localized stress, and by changing the number of first and second magnetic attractors, the external force required to separate the movable part from the fixed part can be adjusted to accommodate movable parts of different weights. Furthermore, the magnetic attraction force of the magnetic connection device can be flexibly adjusted so that the external force required to separate the movable part from the fixed part is less than the collision damage force of the movable part, thereby reducing the damage to the movable part from collisions.

[0032] According to a second aspect of the present invention, a laser processing apparatus includes a collision-protected laser head and a fixture according to a first aspect of the present invention. The fixture is located below the laser head and is used to load battery cells. The laser head is used to perform laser processing on the battery cells on the fixture. The laser head and the fixture are capable of relative movement in the X, Y, and Z directions.

[0033] The laser processing equipment according to the embodiments of the present invention has at least the following beneficial effects:

[0034] 1. This utility model features a first inclined surface at the bottom of the fixed part, tilted along the X direction, and a second inclined surface parallel to the first inclined surface at the top of the movable part. The first and second inclined surfaces are joined together, and a magnetic connecting device is provided between the fixed part and the movable part to magnetically attract and fix them together. It can be understood that the fixed part and the movable part are magnetically attracted and fixed together by the inclined surface joining structure of the first and second inclined surfaces combined with the magnetic connecting device. When the movable part is impacted in the X and Y directions, it can swing along the edge of the joint between the first and second inclined surfaces and detach from the fixed part. When the movable part is impacted in the Z direction, it can also slide along the first inclined surface and detach from the fixed part. This avoids rigid impact damage to the laser head and helps protect the laser head from impacts in the X, Y, and Z directions, reducing damage to the laser head.

[0035] 2. This utility model uses a sensing device installed on the laser head to detect and identify the detachment state of the moving part in real time, and promptly obtains information about the collision of the moving part. It can be combined with an alarm to trigger a collision alarm, and can also be combined with a controller to control the laser processing equipment to stop suddenly, preventing the laser head from continuing to move after being collided and causing secondary damage, thus reducing further damage to the laser head.

[0036] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0037] To more clearly illustrate the technical solutions of the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the structure of a laser head based on collision protection according to an embodiment of the present invention;

[0039] Figure 2 for Figure 1 A schematic diagram of the internal structure of a laser head based on collision protection is shown.

[0040] Figure 3 for Figure 1 The diagram shows the structure of the fixing part;

[0041] Figure 4 for Figure 1 The diagram shows the structure of the active part.

[0042] Reference numerals: 100-fixed part, 110-movable part, 120-first inclined surface, 130-second inclined surface, 140-magnetic connection device, 150-sensing device, 160-positioning component, 170-arc groove, 180-first positioning element, 190-arc protrusion, 200-first sliding hole, 210-first spring, 220-target element, 230-sensing element, 240-first magnetic suction element, 250-second magnetic suction element. Detailed Implementation

[0043] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0044] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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 this utility model.

[0045] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0046] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] The following description, in conjunction with the accompanying drawings, describes a collision-protected laser head and laser processing equipment according to an embodiment of the present invention.

[0048] This utility model aims to provide embodiments of a laser head and laser processing equipment based on collision protection.

[0049] In this embodiment, the laser processing equipment mainly includes a laser head and a fixture based on collision protection. The fixture is located below the laser head and is used to load the battery cell. The laser head is used to perform laser processing on the battery cell on the fixture. The laser head and the fixture can perform relative movement in the X, Y and Z directions.

[0050] Specifically, the laser head is used to guide, shape, focus, and protect the laser beam output from the optical fiber, so that the laser beam can act accurately on the workpiece. The laser head has a laser channel through which the laser beam can pass and protect the laser beam. The laser head is also equipped with an optical unit for guiding, shaping, and / or focusing the laser beam.

[0051] Reference Figure 1 and Figure 2 The laser head based on collision protection includes a fixed part 100, a movable part 110, a magnetic connection device 140, and a sensing device 150.

[0052] Reference Figure 3 The fixing part 100 is installed on the object to be fixed. The fixing part 100 has horizontally arranged and mutually perpendicular X and Y directions, and a Z direction perpendicular to the X and Y directions.

[0053] Specifically, the object to be fixed can be a component of a laser, such as an optical fiber generator or a light guide arm.

[0054] Reference Figure 4 The movable part 110 is located below the fixed part 100.

[0055] Specifically, the bottom of the fixed part 100 is provided with a first inclined surface 120 that is inclined in the X direction, and the top of the movable part 110 is provided with a second inclined surface 130 that is parallel to the first inclined surface 120. The first inclined surface 120 and the second inclined surface 130 are joined together.

[0056] The magnetic connection device 140 is disposed between the fixed part 100 and the movable part 110, and is used to magnetically attract and fix the fixed part 100 and the movable part 110.

[0057] In this embodiment, a first inclined surface 120 inclined along the X direction is provided at the bottom of the fixed part 100, and a second inclined surface 130 parallel to the first inclined surface 120 is provided at the top of the movable part 110. The first inclined surface 120 and the second inclined surface 130 are joined together, and a magnetic connecting device 140 is provided between the fixed part 100 and the movable part 110 to magnetically attract and fix the fixed part 100 and the movable part 110. It can be understood that the fixed part 100 and the movable part 110 are joined together by the inclined surfaces of the first inclined surface 120 and the second inclined surface 130. The structure is magnetically attached and fixed by the magnetic connection device. When the movable part 110 is impacted in the X and Y directions, the movable part 110 can swing along the edge of the joint between the first inclined surface 120 and the second inclined surface 130 to detach from the fixed part 100. When the movable part 110 is impacted in the Z direction, the movable part 110 can also slide along the first inclined surface 120 to detach from the fixed part 100. This avoids rigid impact damage to the laser head and helps protect the laser head when it is impacted in the X, Y and Z directions, thus reducing damage to the laser head.

[0058] In order to minimize the damage to the laser head when it is impacted, the optical unit inside the laser head can be located in the fixed part 100, so that when the movable part 110 is impacted and detached, the optical unit will not be damaged.

[0059] In some specific embodiments, the magnetic connection device 140 includes a first magnetic attractor 240 and a second magnetic attractor 250. The first magnetic attractor 240 is disposed on the first inclined surface 120, and the second magnetic attractor 250 is disposed on the second inclined surface 130. The first magnetic attractor 240 and the second magnetic attractor 250 are magnetically attracted to each other, thereby making the magnetic attraction of the magnetic connection device 140 to the fixed part 100 and the movable part 110 more stable.

[0060] Furthermore, there are multiple first magnetic attractors 240 arranged circumferentially along the central axis of the first inclined plane 120, and there are correspondingly multiple second magnetic attractors 250 arranged circumferentially along the central axis of the second inclined plane 130, with the first magnetic attractors 240 and the second magnetic attractors 250 aligned one-to-one.

[0061] Understandably, on the one hand, the multiple first magnetic attractors 240 and second magnetic attractors 250 are arranged circumferentially to distribute the attraction force of the magnetic connection device 140 evenly, preventing local stress from causing wear on the first inclined surface 120 or the second inclined surface 130. On the other hand, by changing the number of first magnetic attractors 240 and second magnetic attractors 250, the external force required to separate the movable part 110 from the fixed part 100 can be adjusted to accommodate movable parts 110 of different weights. Furthermore, the magnetic attraction force of the magnetic connection device 140 can be flexibly adjusted so that the external force required to separate the movable part 110 from the fixed part 100 is less than the collision damage force of the movable part 110, thereby helping to reduce the damage to the movable part 110 from collisions.

[0062] In some specific embodiments, the first inclined surface 120 may be provided with a first mounting groove, which accommodates the first magnetic member 240, thereby avoiding interference between the first magnetic member 240 protruding from the surface of the first inclined surface 120 and the movable part 110.

[0063] Furthermore, the first magnetic component 240 is fixed in the first mounting groove by bolts, thereby facilitating the assembly and disassembly of the first magnetic component 240.

[0064] In some specific embodiments, the second inclined surface 130 may be provided with a second mounting groove, which accommodates the second magnetic member 250, thereby avoiding interference between the second magnetic member 250 protruding from the surface of the second inclined surface 130 and the fixing part 100.

[0065] Furthermore, the second magnetic component 250 is fixed in the second mounting groove by bolts, thereby facilitating the assembly and disassembly of the second magnetic component 250.

[0066] In some specific embodiments, a positioning component 160 is provided between the first inclined surface 120 and the second inclined surface 130. The positioning component 160 is used to position the engagement between the fixed part 100 and the movable part 110. Thus, on the one hand, the positioning component 160 can ensure that the movable part 110 can be reset along a fixed trajectory after a collision, avoiding laser optical path deviation or connection failure due to misalignment. On the other hand, during normal operation, the positioning component 160 can prevent the movable part 110 from sliding relative to the fixed part 100, ensuring welding accuracy.

[0067] Specifically, the positioning component 160 includes an arc-shaped groove 170 and a first positioning member 180. The arc-shaped groove 170 is disposed in one of the fixed part 100 and the movable part 110, and the first positioning member 180 is disposed in the other of the fixed part 100 and the movable part 110. The first positioning member 180 has an arc-shaped protrusion 190, which cooperates with the arc-shaped groove 170 for positioning.

[0068] Understandably, the arc-shaped groove 170 can guide the arc-shaped protrusion 190 to automatically center, improving positioning efficiency. In addition, when the movable part 110 is hit and slides along the first inclined surface 120, the arc-shaped protrusion 190 can smoothly disengage from the arc-shaped groove 170 along the arc-shaped trajectory of the arc-shaped groove 170, avoiding jamming of the arc-shaped protrusion 190 and the arc-shaped groove 170, which would prevent the movable part 110 from disengaging from the fixed part 100 and thus damage the movable part 110.

[0069] Furthermore, the arc-shaped groove 170 is provided on one of the fixed part 100 and the movable part 110, and the other of the fixed part 100 and the movable part 110 is provided with a first sliding hole 200 for accommodating the first positioning member 180 to slide closer to and away from the arc-shaped groove 170. The positioning assembly 160 also includes a first spring 210, which is disposed between the first positioning member 180 and the bottom wall of the first sliding hole 200. The first spring 210 is used to support the first positioning member 180 in engagement with the arc-shaped groove 170.

[0070] Understandably, the first spring 210 provides flexible support for the first positioning member 180. When the movable part 110 is not collided with, the first spring 210 can support the first positioning member 180 to contact and position with the arc-shaped groove 170. When the movable part 110 is collided with and slides along the first inclined surface 120, the first positioning member 180 is squeezed by the first inclined surface 120, which can compress the first spring 210, so that the first positioning member 180 can retract into the first sliding hole 200. This avoids the first positioning member 180 from damaging the fixed part 100 and hindering the movable part 110 from sliding on the first inclined surface 120, which helps to reduce component damage.

[0071] In some specific embodiments, when the first sliding hole 200 is set in the fixing part 100, the opening of the first sliding hole 200 faces downward. In order to prevent the first positioning member 180 and the first spring 210 from separating due to their own weight, one end of the first spring 210 can be connected and fixed to the bottom wall of the first sliding hole 200, and the other end of the first spring 210 can be connected and fixed to the first positioning member 180.

[0072] The sensing device 150 is used to sense and identify the movement part 110 disengaging from the fixed part 100.

[0073] This embodiment uses a sensing device 150 to detect and identify the detachment state of the movable part 110 in real time, and promptly obtains information about the collision of the movable part 110. It can be combined with an alarm to trigger a collision alarm, and can also be combined with a controller to control the laser processing equipment to stop suddenly, preventing the laser head from continuing to move after being collided and causing secondary damage, thus reducing further damage to the laser head.

[0074] In some specific embodiments, at least two sensing devices 150 are provided, and the at least two sensing devices 150 are respectively provided on both sides of the joint of the first inclined surface 120 and the second inclined surface 130 along the X direction or the Y direction.

[0075] Understandably, when the movable part 110 is impacted in the X direction, it will initially swing away from the fixed part 100 along one edge of the joint between the first inclined surface 120 and the second inclined surface 130 in the X direction. At this time, the movable part 110 will also change position relative to the first inclined surface 120 along the other three edges of the joint between the first inclined surface 120 and the second inclined surface 130. When the movable part 110 is impacted in the Y direction, it will initially swing away from the fixed part 100 along one edge of the joint between the first inclined surface 120 and the second inclined surface 130 in the Y direction. At this time, the movable part 110 will also change position relative to the first inclined surface 120 along the other three edges of the joint between the first inclined surface 120 and the second inclined surface 130. When the movable part 110 is impacted in the Z direction, it will slide upward along the first inclined surface 120 and detach from the fixed part 100. At this time, the edges of the movable part 110 in the four directions along the joint of the first inclined surface 120 and the second inclined surface 130 will change position relative to the first lower part. Therefore, by setting at least two sensing devices 150 respectively on both sides of the joint of the first inclined surface 120 and the second inclined surface 130 along the X or Y direction, the movable part 110 can be detected and identified by at least one sensing device 150 when it is impacted in any of the X, Y, and Z directions. This avoids the sensing device 150 missing the detection and thus failing to identify the movable part 110 detaching from the fixed part 100.

[0076] Furthermore, at least two sensing devices 150 are located on both sides of the joint between the first inclined surface 120 and the second inclined surface 130 along the inclination direction of the first inclined surface 120.

[0077] It is understandable that the joint between the first inclined surface 120 and the second inclined surface 130 is inclined along the X direction, making it easier for the movable part 110 to detach when it is hit by an X-direction collision. Setting the X direction as the direction in which the laser head makes the most frequent relative translational movements with respect to the fixture, that is, setting the X direction as the workstation cutting direction, maximizes the probability of the movable head being hit by an X-direction collision. Thus, the movable part 110 has a greater probability of being hit and detached in the direction where it is more likely to be hit and detached, which helps to further reduce the risk of damage to the laser head from collisions. At the same time, after the movable part 110 is hit, the displacement amplitude at the joint edge opposite to the swing axis of the movable part 110 at the joint between the first inclined surface 120 and the second inclined surface 130 is the largest. The sensing device 150 here can detect the movable part 110 detaching from the fixed part 100 more quickly, thereby making the sensing response of the sensing device 150 faster.

[0078] In some specific embodiments, the sensing device 150 includes a target element 220 and a sensing element 230 for sensing changes in the position of the target element 220. The target element 220 is disposed in one of the fixed part 100 and the movable part 110, and the sensing element 230 is disposed in the other of the fixed part 100 and the movable part 110. Thus, on the one hand, the target element 220 and the sensing element 230 are separately disposed in the fixed part 100 and the movable part 110, which simplifies the wiring and avoids cable tangling when the movable part 110 moves. On the other hand, the target element 220 and the sensing element 230 use non-contact sensing, which eliminates mechanical wear, and the sensing device 150 has a fast response.

[0079] In some specific embodiments, the sensing device 150 can be configured as a proximity sensor. When the sensing element 230 of the proximity sensor senses a change in the distance to the target element 220, the identification moving part 110 disengages from the fixed part 100.

[0080] Furthermore, since the movable part 110 usually moves away from the fixed part 100 when it detaches from the fixed part 100, in order to more accurately identify that the movable part 110 has detached from the fixed part 100, the sensing element 230 of the proximity sensor can detect that the distance to the target element 220 has increased or loses its sensing of the target element 220, and then identify that the movable part 110 has detached from the fixed part 100.

[0081] In some specific embodiments, the laser processing equipment may be equipped with an alarm, which is electrically connected to the sensing device 150. After the sensing device 150 senses that the moving part 110 has detached from the fixed part 100, it transmits the sensing signal to the alarm, and the alarm will sound an alarm after receiving the signal.

[0082] In some specific embodiments, the sensing device 150 can be electrically connected to the control module of the laser processing equipment. After the sensing device 150 senses that the moving part 110 is separated from the fixed part 100, it transmits the sensing signal to the control module. After receiving the signal, the control module controls the laser processing equipment to stop.

[0083] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0084] The terms "first," "second," "third," "fourth," etc. (if applicable) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein.

[0085] It should also be noted that, in the description of this specification, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0086] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may also include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products, or apparatus.

[0087] Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0088] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A laser head based on collision protection, characterized in that include: The fixing part (100) is installed on the object to be fixed and has horizontally arranged and mutually perpendicular X and Y directions, and a Z direction perpendicular to the X and Y directions; The movable part (110) is provided below the fixed part (100); The bottom of the fixed part (100) is provided with a first inclined surface (120) that is inclined in the X direction, and the top of the movable part (110) is provided with a second inclined surface (130) that is parallel to the first inclined surface (120). The first inclined surface (120) and the second inclined surface (130) are joined together. A magnetic connection device (140) is disposed between the fixed part (100) and the movable part (110) for magnetically adsorbing and fixing the fixed part (100) and the movable part (110); A sensing device (150) is used to sense and identify when the movable part (110) is disengaged from the fixed part (100).

2. The collision protection based laser head of claim 1, wherein, A positioning component (160) is provided between the first inclined surface (120) and the second inclined surface (130), the positioning component (160) being used to position the engagement of the fixed part (100) and the movable part (110).

3. The collision protection based laser head of claim 2, wherein, The positioning component (160) includes an arc-shaped groove (170) and a first positioning member (180). The arc-shaped groove (170) is disposed in one of the fixed part (100) and the movable part (110), and the first positioning member (180) is disposed in the other of the fixed part (100) and the movable part (110). The first positioning member (180) has an arc-shaped protrusion (190), which cooperates with the arc-shaped groove (170) for positioning.

4. The collision protection based laser head of claim 3, wherein, The arc-shaped groove (170) is disposed on one of the fixed part (100) and the movable part (110). The other of the fixed part (100) and the movable part (110) is provided with a first sliding hole (200) for accommodating the first positioning member (180) to slide closer to and away from the arc-shaped groove (170). The positioning assembly (160) further includes a first spring (210), which is disposed between the bottom wall of the first positioning member (180) and the first sliding hole (200). The first spring (210) is used to support the first positioning member (180) in cooperation with the arc-shaped groove (170).

5. The collision protection based laser head of claim 1, wherein, The number of the sensing devices (150) is at least two, and the at least two sensing devices (150) are respectively arranged on both sides of the splice of the first inclined surface (120) and the second inclined surface (130) along the X direction or the Y direction.

6. The collision protection based laser head of claim 5, wherein, At least two of the sensing devices (150) are located on both sides of the joint of the first inclined surface (120) and the second inclined surface (130) along the inclination direction of the first inclined surface (120).

7. The collision protection based laser head of claim 1, wherein, The sensing device (150) includes a target element (220) and a sensing element (230) for sensing changes in the position of the target element (220). The target element (220) is disposed in one of the fixed part (100) and the movable part (110), and the sensing element (230) is disposed in the other of the fixed part (100) and the movable part (110).

8. The collision protection based laser head of claim 1, wherein, The magnetic connection device (140) includes a first magnetic attractor (240) and a second magnetic attractor (250). The first magnetic attractor (240) is disposed on the first inclined surface (120), and the second magnetic attractor (250) is disposed on the second inclined surface (130). The first magnetic attractor (240) and the second magnetic attractor (250) are magnetically attracted to each other.

9. The collision protection based laser head of claim 8, wherein, The number of the first magnetic attractor (240) is set to be multiple, and the multiple first magnetic attractors (240) are arranged circumferentially along the central axis of the first inclined surface (120). The number of the second magnetic attractor (250) is set to be multiple, and the multiple second magnetic attractors (250) are arranged circumferentially along the central axis of the second inclined surface (130). The first magnetic attractor (240) and the second magnetic attractor (250) are aligned one by one.

10. Laser processing apparatus, characterized in that The invention includes a laser head and fixture based on collision protection as described in any one of claims 1 to 9, wherein the fixture is located below the laser head, the fixture is used to load a battery cell, the laser head is used to perform laser processing on the battery cell on the fixture, and the laser head and the fixture are capable of relative movement in the X, Y and Z directions.

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