Laser focusing structure and laser processing equipment

Abstract

The utility model provides a laser focusing structure and laser processing equipment. The laser focusing structure comprises a shell, a sliding assembly and a driving assembly, the shell is provided with an accommodating cavity and a light outlet communicated with the accommodating cavity; the sliding assembly comprises a first magnetic part and a first lens, the first magnetic part is arranged in the shell and can slide relative to the shell, and the first lens is arranged on the first magnetic part. The driving assembly comprises a second magnetic attraction part and a driving module; the driving module drives the second magnetic part to move, the second magnetic part and the first magnetic part are in magnetic attraction fit, and the first magnetic part and the first lens move in the containing cavity. Through movement of the first lens, the focal length of the laser focusing structure can be adjusted, and then the position of a light spot is adjusted, so that different machining effects are achieved through the same laser focusing structure, and / or multiple machining materials with different thicknesses are compatible.

Description

Technical Field

[0001] This utility model relates to the field of laser processing technology, and in particular to a laser focusing structure and laser processing equipment. Background Technology

[0002] Laser processing equipment, which uses lasers as a medium for processing, is becoming increasingly popular, such as laser engraving machines, laser marking machines, and laser cutting machines. In practical applications, it is necessary to ensure that the laser focus is on the material being processed to achieve better processing results.

[0003] In related technologies, the position of the laser focus of laser processing equipment is fixed, but there may be processing materials of different thicknesses or curved surfaces, which requires different laser processing heads or additional accessories, making the operation more complicated and costly. Utility Model Content

[0004] The purpose of this invention is to provide a laser focusing structure and a laser processing equipment, which can adjust the focal length of the laser focusing structure and thus adjust the position of the laser spot, so as to achieve different processing effects and / or be compatible with a variety of processing materials of different thicknesses through the same laser focusing structure.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] According to one aspect of this utility model, a laser focusing structure is provided, including a housing, a sliding assembly, and a driving assembly; the housing has a receiving cavity and a light outlet communicating with the receiving cavity; the sliding assembly is slidably disposed within the receiving cavity, the sliding assembly includes a first magnetic element and a first lens, the first magnetic element is disposed within the housing and can slide relative to the housing, the first lens is disposed on the first magnetic element, and the first magnetic element has a first light-transmitting hole; the driving assembly includes a second magnetic element and a driving module; the second magnetic element is disposed outside the housing and can magnetically engage with the first magnetic element; the driving module is disposed outside the housing and connected to the second magnetic element, for driving the second magnetic element to move along the optical axis of the first lens.

[0007] In some embodiments of this application, the sliding assembly further includes a slider that is slidably disposed within the housing, the first magnetic suction member is disposed on the slider, and the slider is provided with a second light-transmitting hole.

[0008] In some embodiments of this application, the driving module includes a guide rail extending along the optical axis, a slider slidably disposed on the guide rail, and a driving member; the driving member is connected to the slider to drive the slider to slide; the second magnetic member is disposed on the slider.

[0009] In some embodiments of this application, the drive module further includes a lead screw, which passes through the slider and is threadedly connected to the slider; the lead screw is driven to the drive member, and the lead screw extends along the optical axis.

[0010] In some embodiments of this application, the guide rails are configured as multiple rails, which are spaced apart, and the slider is slidably mounted on the multiple guide rails.

[0011] In some embodiments of this application, two stop portions are formed inside the housing. The two stop portions are disposed on both sides of the sliding assembly in the sliding direction. The two stop portions are respectively used to abut against the two ends of the sliding assembly during the sliding process to limit the sliding stroke of the sliding assembly.

[0012] In some embodiments of this application, the housing includes a first housing and a second housing, the accommodating cavity is formed in the first housing, and one end of the first housing has an opening; the second housing covers or seals the opening of the first housing.

[0013] In some embodiments of this application, a second lens is also included. The second lens is disposed inside the housing and located on the light-incident side or light-outcident side of the first lens. The optical axis of the second lens coincides with that of the first lens. The second lens is used to cooperate with the first lens to focus the laser.

[0014] In some embodiments of this application, a window mirror is also included, disposed at the light outlet.

[0015] According to another aspect of this application, this application provides a laser processing device, including a device body, a laser generator disposed in the device body, and the aforementioned laser focusing structure; the laser focusing structure is disposed in the emission optical path of the laser generator.

[0016] As can be seen from the above technical solution, this utility model has at least the following advantages and positive effects:

[0017] In this invention, the laser beam passes sequentially through a first lens and a light outlet, and is focused by the first lens. The focal point of the focused laser passes outside the housing, allowing it to be used for processing workpieces outside the housing. A drive module moves a second magnetic component, which magnetically engages with the first magnetic component. The first magnetic component and the first lens move within the accommodating cavity. The movement of the first lens adjusts the focal length of the laser focusing structure, thereby adjusting the spot position, to achieve different processing effects and / or be compatible with processing materials of various thicknesses using the same laser focusing structure.

[0018] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0021] Figure 1 This is a schematic diagram of the structure of a laser processing device according to some embodiments of this utility model.

[0022] Figure 2 This is a schematic diagram of the laser focusing structure in some embodiments of this utility model.

[0023] Figure 3 yes Figure 2 A partial cross-sectional view of the corresponding laser focusing structure, in which the driving component is not shown.

[0024] Figure 4 This is a cross-sectional schematic diagram of the shell of some embodiments of this utility model.

[0025] Figure 5 This is a schematic diagram of the structure of the first housing in some embodiments of this utility model.

[0026] Figure 6 This is a schematic diagram of the structure of the second shell in some embodiments of this utility model.

[0027] Figure 7 This is a structural schematic diagram of the first embodiment of the sliding component of this utility model.

[0028] Figure 8 This is a structural schematic diagram of the second embodiment of the sliding component of this utility model.

[0029] Figure 9 This is a schematic diagram of the structure of the driving component in some embodiments of this utility model.

[0030] Figure 10 This is a schematic diagram of the slider structure in some embodiments of this utility model.

[0031] The reference numerals in the attached drawings are explained as follows: 10, laser focusing structure; 20, laser generator; 21, light guide channel; 30, main body of the device; 100, housing; 110, accommodating cavity; 120, light outlet; 130, light inlet; 140, window mirror; 150, stop part; 160, first housing; 161, slot; 170, second housing; 171, hook; 180, second lens; 200, sliding assembly; 210, sliding component; 211, second light-transmitting hole; 220, first lens; 230, first magnetic component; 231, first light-transmitting hole; 300, driving assembly; 310, driving module; 311, guide rail; 312, slider; 3121, limiting groove; 313, driving component; 314, lead screw; 320, second magnetic component. Detailed Implementation

[0032] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art.

[0033] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0034] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present application, and should not be construed as limiting the present application.

[0035] For ease of description and understanding, the direction facing inwards from the center of the device is called "inner" and the direction away from the center of the device is called "outer".

[0036] Figure 1 This is a schematic diagram of the structure of a laser processing device according to some embodiments of this utility model. Figure 2 This is a schematic diagram of the laser focusing structure in some embodiments of this utility model. Figure 3 yes Figure 2 A partial cross-sectional view of the corresponding laser focusing structure.

[0037] See Figures 1 to 3This application provides a laser processing apparatus, including an apparatus body 30, a laser generator 20 disposed on the apparatus body 30, and a laser focusing structure 10. Both the laser generator 20 and the laser focusing structure 10 are mounted on the apparatus body 30. The laser generator 20 emits laser light. The laser focusing structure 10 is located in the emission optical path of the laser generator 20. The laser light emitted by the laser generator 20 undergoes optical modulation, such as focusing, through the laser focusing structure 10, and the focused laser light exits from the laser focusing structure 10. The laser focusing structure 10 can adjust the focal length, thereby adjusting the spot position, to achieve different processing effects and / or be compatible with processing materials of various thicknesses using the same laser processing head. The laser focusing structure 10 can be disposed on the laser processing head.

[0038] In some embodiments, the laser focusing structure 10 includes a housing 100, a sliding assembly 200, and a driving assembly 300. When a workpiece needs to be processed, it is placed on a processing table outside the housing 100. The sliding assembly 200 is located inside the housing 100 and is used for laser focusing. The laser focal point, focused within the sliding assembly 200, irradiates the workpiece on the processing table, thus processing the workpiece.

[0039] In this embodiment, the driving component 300 can drive the sliding component 200 to move relative to the housing 100, thereby making the laser focus adjustable. A single processing device can achieve different processing effects on the same material or process materials of different thicknesses.

[0040] The laser focusing structure 10 proposed in this application can change the focal position of the emitted laser by adjusting the focal length. It can be applied to laser processing equipment such as laser marking machines, laser engraving machines, laser cutting machines, and laser welding machines to realize laser marking, laser engraving, laser cutting, and laser welding operations.

[0041] Figure 4 This is a cross-sectional schematic diagram of the shell of some embodiments of this utility model.

[0042] See Figures 2 to 4 In the laser focusing structure 10, the housing 100 serves as the base for support and installation. The housing 100 has a receiving cavity 110 for accommodating the sliding assembly 200. The sliding assembly 200 is housed within the housing 100 to protect the sliding assembly 200, effectively preventing possible contact with the sliding assembly 200 and maintaining its accuracy.

[0043] A light-emitting port 120 is provided on the outer surface of the housing 100 and extends inward through the wall thickness of the housing 100 so that the light-emitting port 120 extends into the receiving cavity 110 of the housing 100, and the light-emitting port 120 and the receiving cavity 110 are connected. The sliding assembly 200 is located inside the receiving cavity 110. The laser propagating in the sliding assembly 200 is emitted from the light-emitting port 120 of the housing 100, and the focal point of the laser is located outside the housing 100, so as to perform laser processing on the workpiece outside the housing 100.

[0044] The accommodating cavity 110 extends in a straight line, and the light outlet 120 is located at one end of the extending direction of the accommodating cavity 110. The inner diameter of the accommodating cavity 110 is the same along its own extending direction. The sliding assembly 200 is housed within the accommodating cavity 110, abutting against the inner peripheral wall of the accommodating cavity 110, so as to be able to slide along the extending direction of the accommodating cavity 110. The accommodating cavity 110 not only protects the sliding assembly 200 but also serves as a guide.

[0045] In this embodiment, a light inlet 130 is provided on the side of the housing 100 facing away from the light outlet 120, and the light inlet 130 communicates with the accommodating cavity 110. The axes of the light inlet 130 and the light outlet 120 coincide, so that the laser can pass through the light inlet 130, the accommodating cavity 110 and the light outlet 120 in sequence.

[0046] In this embodiment, a laser generator 20 is provided on the side of the housing 100 facing away from the light outlet 120. A light guide channel 21 for the laser to pass through is provided in the laser generator 20. The light guide channel 21 is connected to the light inlet 130. After the laser emitted by the laser generator 20 is guided by the light guide channel 21, it enters the sliding component 200 in the accommodating cavity 110.

[0047] In some embodiments, the light guide channel 21 extends in a straight line, and the axis of the light guide channel 21 passes through the light outlet 120. Further, the axis of the light guide channel 21 coincides with the axis of the light outlet 120.

[0048] In another embodiment, the laser generator 20 is a bent tubular structure, and at least one reflector can be provided in the light guide channel 21 to change the propagation path of the laser. The reflector is used to make the laser emitted from the laser generator 20 propagate in the bent light guide channel 21.

[0049] Figure 5 This is a schematic diagram of the structure of the first housing in some embodiments of this utility model. Figure 6 This is a schematic diagram of the structure of the second shell in some embodiments of this utility model.

[0050] See Figures 3 to 6In this embodiment, the housing 100 includes a first housing 160 and a second housing 170; a receiving cavity 110 is formed on the first housing 160, and one end of the first housing 160 has an opening; the second housing 170 covers or seals the opening of the first housing 160.

[0051] The first housing 160 has an open structure at least one end, so that the sliding component 200 can extend from the open end of the first housing 160 into the receiving cavity 110 inside the first housing 160.

[0052] In this embodiment, the first housing 160 has an open end, and the light outlet 120 is formed on the second housing 170. The second housing 170 blocks and seals the open end of the first housing 160, and a stop portion 150 is formed on the second housing 170 and another stop portion 150 is formed on the first housing 160.

[0053] In this embodiment, a hook structure is provided between the opposite ends of the first housing 160 and the second housing 170 to limit the positioning of the first housing 160 and the second housing 170. The hook structure between the opposite ends of the first housing 160 and the second housing 170 facilitates the installation and disassembly of the first housing 160 and the second housing 170.

[0054] The latch structure includes a latch 171 and a latch 161, which are respectively disposed on the first housing 160 and the second housing 170. In one embodiment, the latch 171 is formed at the end of the first housing 160 facing the second housing 170, and the latch 161 is formed at the end of the second housing 170 facing the first housing 160. In another embodiment, the latch 171 is formed at the end of the second housing 170 facing the first housing 160, and the latch 161 is formed at the end of the first housing 160 facing the second housing 170.

[0055] In this application, two stop portions 150 are formed inside the housing 100. The two stop portions 150 are disposed on both sides of the sliding assembly 200 in the sliding direction. The two stop portions 150 are respectively used to abut against the two ends of the sliding assembly 200 during the sliding process, so as to limit the sliding stroke of the sliding assembly 200.

[0056] In some embodiments, two stop portions 150 are provided. One stop portion 150 is formed on the side wall of the first housing 160 where the light inlet 130 is provided. The other stop portion 150 is formed on the end of the second housing 170 facing the first housing 160. A slot 161 is provided on the inner side wall of the first housing 160. The end of the second housing 170 facing the first housing 160 extends into the first housing 160 and engages with the slot 161 in the first housing 160. The end of the second housing 170 extending into the first housing 160 faces the inner peripheral wall of the receiving cavity 110 in the direction towards the interior of the receiving cavity 110, thus forming a stop portion 150.

[0057] In other embodiments, both stop portions 150 are formed on the first housing 160, and the inner peripheral wall of the receiving cavity 110 protrudes to form a protruding structure, the protruding structure forming the stop portion 150, and both stop portions 150 are formed on the inner peripheral wall of the receiving cavity 110.

[0058] In another embodiment, the first housing 160 is a tubular structure open at both ends, the second housing 170 covers both ends of the first housing 160, and two stops 150 are formed on the second housing 170.

[0059] Figure 7 This is a structural schematic diagram of the first embodiment of the sliding component of this utility model.

[0060] See Figures 3 to 7 The sliding component 200 is located inside the housing 100 and is capable of sliding within the housing 100. The sliding component 200 may include a first magnetic element 230 and a first lens 220. The first lens 220 is disposed on the first magnetic element 230, which is located inside the housing 100 and is capable of sliding relative to the housing 100 along the optical axis of the first lens 200.

[0061] The optical axis of the first lens 220 is parallel to the extending direction of the accommodating cavity 110. The first magnetic element 230 is slidably disposed within the accommodating cavity 110 of the housing 100, allowing it to move closer to and further away from the light outlet 120. The first lens 220 is mounted on the first magnetic element 230, enabling it to move with the first magnetic element 230. The first magnetic element 230 drives the first lens 220 to move, causing it to move closer to or further away from the light outlet 120, thereby shifting the laser focus and achieving different laser processing effects.

[0062] In some embodiments, a first light-transmitting hole 231 is provided on the first magnetic element 230, and a first lens 220 is disposed within the first light-transmitting hole 231. The first magnetic element 230 has an annular structure, and the first light-transmitting hole 231 is formed in the middle of the first magnetic element 230. The outer periphery of the first lens 220 is attached and fixed within the first light-transmitting hole 231 of the first magnetic element 230.

[0063] The first magnetic component 230 has a first light-passing hole 231 for laser transmission, with the light-emitting end of the first light-passing hole 231 facing the light-emitting port 120. A first lens 220 is fixed to the first magnetic component 230 and is located inside the first light-passing hole 231, so that the laser in the first light-passing hole 231 can pass through the first lens 220 and the light-emitting port 120 in sequence. The laser passes through the light-emitting port 120, and the focal point of the laser is located outside the housing 100, so as to process the workpiece outside the housing 100.

[0064] In some embodiments, the laser emitted by the laser generator 20 passes through the light inlet 130 and propagates into the first light-passing hole 231 of the first magnetic component 230. The laser then passes through the first lens 220 and the light outlet 120 in sequence.

[0065] In one embodiment, the laser focusing structure 10 focuses the laser through a single first lens 220.

[0066] In some embodiments, a second lens 180 is provided at the light outlet 120 of the housing 100, and the axes of the second lens 180 and the first lens 220 coincide. The combination of the first lens 220 and the second lens 180 achieves laser focusing. For example, the first lens 220 is a concave lens, which disperses the light. The second lens 180 is a convex lens, which focuses the light. By changing the position of the first lens 220 relative to the second lens 180, the position of the laser spot exiting the second lens 180 can be adjusted.

[0067] In other embodiments, the first lens 220 is a convex lens and the second lens 180 is a concave lens. In still other embodiments, the first lens 220 and the second lens 180 can also be other types of lenses, such as freeform lenses. No limitation is imposed here, as long as the combination of lenses can achieve focusing.

[0068] By using the first lens 220 and the second lens 180 together, the laser beam can be focused, which can reduce the size of the laser spot formed at the processing position, increase the energy density of the laser spot, and improve the processing efficiency.

[0069] In some embodiments of this application, the housing 100 includes a first housing 160 and a second housing 170, and a second lens 180 is disposed on the second housing 170.

[0070] In one embodiment, the sliding assembly 200 may include a slider 210, a first magnetic element 230, and a first lens 220. The slider 210 is slidably disposed within the receiving cavity 110 of the housing 100, allowing it to move closer to and further away from the light outlet 120. The first magnetic element 230 is disposed on the slider 210, and the first lens is disposed on either the slider 210 or the first magnetic element 230. The slider 210, the first magnetic element 230, and the first lens 220 can move together along the optical axis of the first lens 220, thereby causing the first lens 220 to move closer to and further away from the light outlet 120 along the optical axis of the first magnetic element 230.

[0071] In some embodiments, the slider 210 has a second light-transmitting hole 211 for laser transmission. The second light-transmitting hole 211 extends through both opposite ends of the slider 210, and the extending direction of the second light-transmitting hole 211 is parallel to the sliding direction of the slider 210. The extending direction of the accommodating cavity 110 is parallel to the extending direction of the second light-transmitting hole 211.

[0072] The light-emitting end of the second light-transmitting hole 211 faces the light-emitting port 120. A first magnetic element 230 is fixed to the sliding element 210 and located within the second light-transmitting hole 211. A first lens is disposed on the first magnetic element 230. The laser beam within the second light-transmitting hole 211 can pass sequentially through the first lens 220 and the light-emitting port 120. The laser beam passes through the light-emitting port 120, and its focal point is located outside the housing 100, allowing for the processing of workpieces outside the housing 100.

[0073] In other embodiments, the outer periphery of the slider 210 is fitted to the outer periphery of the receiving cavity 110 to restrict the movement of the slider 210 in the radial direction of the receiving cavity 110 and keep the position of the axis of the second light-transmitting hole 211 on the slider 210 stable.

[0074] In one embodiment, the outer peripheral cross-section of the slider 210 is circular, and the radial cross-section of the receiving cavity 110 of the housing 100 is circular. In some embodiments, the outer peripheral cross-section of the slider 210 is elliptical, quadrilateral, pentagonal, or other shapes, and the shape of the radial cross-section of the housing 100 is adapted to the outer periphery of the slider 210 so that the slider 210 can slide along the receiving cavity 110.

[0075] In some embodiments, the slider 210 has an annular structure, the first magnetic element 230 is fixed and attached to the inner peripheral wall of the second light-transmitting hole 211 of the slider 210, and the first lens 220 is attached and fixed inside the first light-transmitting hole 231 of the first magnetic element 230.

[0076] In one embodiment, the slider 210 has a groove, and the first magnetic element 230 is accommodated and fixed in the groove. The outer periphery of the first lens 220 is directly fixed to the outer peripheral sidewall of the second light-transmitting hole 211.

[0077] In another embodiment, the slider 210 has multiple grooves, each containing and fixing a first magnetic element 230. The multiple grooves are evenly distributed around the axis of the second light-transmitting hole 211.

[0078] In other embodiments, the first magnetic element 230 is directly attached to the outer periphery of the slider 210, such as at both ends of the slider 210 in the sliding direction.

[0079] In some embodiments, the first lens 220 is directly fixed inside the second light-transmitting hole 211, and the peripheral side of the first lens 220 abuts against the inner wall of the second light-transmitting hole 211. The first magnetic element 230 is disposed at any position of the sliding element 210.

[0080] In some embodiments, the laser focusing structure 10 may not have a light guide channel 21, and the light emitted by the laser generator 20 may be directly transmitted to the first light-transmitting hole 231 of the first magnetic component 230. The laser generator 20 is disposed in the accommodating cavity 110.

[0081] In some implementations, the laser focusing structure may also include a window mirror 140, located at the light outlet 120 of the housing. The window mirror 140 is located on the side of the second lens 180 facing away from the slider 210. The window mirror 140 seals the light outlet 120, preventing dust from entering the housing 100 and protecting the components or structures inside the housing 100.

[0082] In some embodiments of this application, the housing 100 includes a first housing 160 and a second housing 170, with a light outlet 120 opened on the second housing 170 and a window mirror 140 disposed on the second housing 170.

[0083] Figure 8 This is a structural schematic diagram of the second embodiment of the sliding component of this utility model.

[0084] See Figures 3 to 8 The structure of the sliding assembly is the same as that of the first embodiment of the sliding assembly. The sliding assembly 200 includes a slider 210, a first lens 220, and a first magnetic element 230. The first lens and the first magnetic element 230 are respectively disposed on the slider 210.

[0085] In some embodiments, the slider 210 has a second light-passing hole 211 for laser light to pass through, and the light-emitting end of the second light-passing hole 211 faces the light-emitting port 120. The outer periphery of the first lens 220 abuts against the peripheral sidewall of the second light-passing hole 211. The first magnetic element 230 has a ring structure, and the outer periphery of the first magnetic element 230 is attached to the inner peripheral wall of the second light-passing hole 211.

[0086] Figure 9 This is a schematic diagram of the structure of the driving component in some embodiments of this utility model. Figure 10 This is a schematic diagram of the slider structure in some embodiments of this utility model.

[0087] See Figures 3 to 10 The drive component 300 is used to drive the first magnetic component 230 to slide, thereby driving the first lens 220 to move, so as to adjust the position of the laser focus outside the housing 100.

[0088] In the laser focusing structure 10, the driving component 300 drives the sliding component 200 to move, thereby adjusting the position of the first lens 220 and thus adjusting the position of the laser focus. When using the laser focusing structure 10 to process a workpiece or object, ensuring the laser focus falls on the processing material reduces the size of the laser spot on the workpiece or object and concentrates the energy, improving processing accuracy and efficiency. Furthermore, the laser focus can be adjusted to ensure it falls on the processing material when processing workpieces of different heights or thicknesses.

[0089] In this embodiment, when adjusting the laser focus, only the position of the sliding component 200 needs to be adjusted, without adjusting the position of the entire laser focusing structure 10. This makes the adjustment of the laser focus position more convenient and flexible, without requiring a high driving force, thus reducing driving energy consumption.

[0090] In some embodiments, the driving component 300 can be a winding module and a corresponding magnetic component. The magnetic field of the winding module drives the corresponding magnetic component, thereby causing the slider 210 to slide.

[0091] In this embodiment, the driving assembly 300 may include a second magnetic element 320 and a driving module 310. The second magnetic element 320 is disposed outside the housing 100; the second magnetic element 320 can magnetically engage with the first magnetic element 230, so that the first magnetic element 230 can move with the second magnetic element 320. The second magnetic element 320 and the first magnetic element 230 are magnetically attracted to each other, so that the movement of the second magnetic element 320 can drive the movement of the first magnetic element 230, thereby driving the first lens to slide within the accommodating cavity 110.

[0092] A drive module 310 is disposed outside the housing 100 and connected to a second magnetic component 320, used to drive the second magnetic component 320 to move along the optical axis of the first lens. The second magnetic component 320 is fixed to the drive module 310 so that it can move with the drive module 310. The movement of the drive module 310 causes the second magnetic component 320 to move, thereby giving the first magnetic component 230 a tendency to move, which in turn causes the first lens 220 to move, thereby causing the laser to move at its focal point outside the housing 100.

[0093] In this embodiment, the drive module 310 includes a guide rail 311, a slider 312 slidably disposed on the guide rail 311, and a sliding drive member 313 for moving the slider 312. The guide rail extends along the optical axis of the first lens. The slider moves automatically under the drive of the drive member 313, and the sliding movement drives the second magnetic member to move. The second magnetic member drives the first magnetic member 230 to move, thereby controlling the position of the first lens and controlling the movement of the laser focusing structure 10 spot position.

[0094] In some embodiments, the drive module 310 may include only a slider 312 located outside the housing 100, so that the position of the laser focus can be manually controlled by manually moving the slider 312.

[0095] In some embodiments, the drive element 313 is a motor. In other embodiments, the drive element 313 may consist only of the drive element 313 and the slider 312. The drive element 313 may be a cylinder or a hydraulic cylinder, and the movement of the slider 312 is controlled by the extension and retraction of the cylinder or hydraulic cylinder.

[0096] In this embodiment, the drive module 310 further includes a lead screw 314, which passes through the slider 312 and is threadedly connected to the slider 312; the lead screw 314 is driven by the drive member 313. The drive member 313 drives the lead screw 314 to rotate, thereby driving the slider 312 to move on the guide rail 311, so as to drive the second magnetic member 320 to move.

[0097] It should be noted that the drive module 310 can also be a linear motor, which can directly drive the slider to move.

[0098] In one embodiment, the guide rail 311 extends in a straight line; at least a plurality of guide rails 311 are provided, and the plurality of guide rails 311 are arranged at radial intervals. The arrangement of the plurality of guide rails 311 makes the movement of the slider 312 smoother.

[0099] In this embodiment, two guide rails 311 are provided. In some embodiments, one, three, or more guide rails 311 are provided.

[0100] A limiting groove 3121 is formed on the side of the slider 312 facing the housing 100, and the second magnetic component 320 is fixed in the limiting groove 3121. The second magnetic component 320 is arranged on the side of the slider 312 facing the housing 100 so that there is a smaller distance between the first magnetic component 230 and the second magnetic component 320, and the magnetic attraction between the first magnetic component 230 and the second magnetic component 320 is greater, so as to better drive the first lens to slide.

[0101] See again Figures 2 to 6 The housing 100 is provided with a stop portion 150, which protrudes from the inner sidewall of the receiving cavity 110. Two stops 150 are provided, located at both ends of the sliding direction of the slider 210, to limit the sliding position of the slider 210. The stops 150 stop the slider 210 so that after sliding, the slider 210 is stopped at a preset position, thereby ensuring that the focal point of the laser outside the housing 100 is limited to the preset position to achieve the corresponding processing function. For example, when the slider 210 is stopped by two stops 150, the laser focusing structure 10 can achieve engraving and cutting effects respectively.

[0102] In some embodiments of this application, the first magnetic element 230 is a magnet, and the second magnetic element 320 is a magnet with opposite magnetic properties. In other embodiments, the first magnetic element 230 is a magnet, and the second magnetic element 320 is an iron sheet.

[0103] In some embodiments, the housing 100 may be made of materials such as plastic or silicone to make the housing 100 non-magnetic and avoid interference.

[0104] Based on the above structure, when the processing function of the laser focusing structure 10 needs to be adjusted, the driving component drives the lead screw 314 to rotate, thereby causing the second magnetic component 320 to move with the slider 312. When the movement of the second magnetic component 320 causes the slider 210 to move to the preset position, it abuts against the stop portion 150 at the corresponding position.

[0105] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0106] In this application, unless otherwise expressly specified and limited, the terms "assembly," "connection," etc., 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 application according to the specific circumstances. In the description of this specification, the reference to terms such as "some embodiments," "exemplarily," etc., means that the specific features, structures, materials, or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0107] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and description of this application should fall within the scope of this patent application.

Claims

1. A laser focusing structure for use in laser processing equipment, characterized in that, include: The housing has a receiving cavity and a light outlet communicating with the receiving cavity; A sliding assembly is slidably disposed within the accommodating cavity. The sliding assembly includes a first magnetic element and a first lens. The first magnetic element is disposed within the housing and is slidable relative to the housing. The first lens is disposed on the first magnetic element. The first magnetic element has a first light-transmitting hole. The driving assembly includes a second magnetic element and a driving module; the second magnetic element is disposed outside the housing and can magnetically engage with the first magnetic element; the driving module is disposed outside the housing and connected to the second magnetic element, and is used to drive the second magnetic element to move along the optical axis of the first lens.

2. The laser focusing structure according to claim 1, characterized in that, The sliding assembly further includes a sliding member, which is slidably disposed within the housing. The first magnetic suction member is disposed on the sliding member, and the sliding member is provided with a second light-transmitting hole.

3. The laser focusing structure according to claim 1 or 2, characterized in that, The drive module includes a guide rail extending along the optical axis, a slider slidably disposed on the guide rail, and a drive component; the drive component is connected to the slider to drive the slider to slide; the second magnetic component is disposed on the slider.

4. The laser focusing structure according to claim 3, characterized in that, The drive module also includes a lead screw, which passes through the slider and is threaded to the slider; the lead screw is driven to the drive component, and the lead screw extends along the optical axis.

5. The laser focusing structure according to claim 3, characterized in that, The guide rails are configured in multiple ways, with the multiple guide rails spaced apart, and the slider is slidably mounted on the multiple guide rails.

6. The laser focusing structure according to claim 1 or 2, characterized in that, Two stop portions are formed inside the housing. The two stop portions are disposed on both sides of the sliding assembly in the sliding direction. The two stop portions are respectively used to abut against the two ends of the sliding assembly during the sliding process to limit the sliding stroke of the sliding assembly.

7. The laser focusing structure according to claim 1 or 2, characterized in that, The housing includes a first housing and a second housing, the accommodating cavity is formed in the first housing, and one end of the first housing has an opening; the second housing covers or seals the opening of the first housing.

8. The laser focusing structure according to claim 1 or 2, characterized in that, The laser focusing structure further includes a second lens, which is disposed inside the housing and located on the light-incident side or light-outcident side of the first lens. The optical axis of the second lens coincides with that of the first lens. The second lens is used to cooperate with the first lens to focus the laser.

9. The laser focusing structure according to claim 1 or 2, characterized in that, The laser focusing structure also includes a window mirror located at the light outlet.

10. A laser processing device, characterized in that, include: Equipment body; A laser generator is mounted on the main body of the device; The laser focusing structure according to any one of claims 1 to 9, wherein the laser focusing structure is disposed in the emitting optical path of the laser generator.

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