Light path adjusting device and laser cutting machine

Abstract

The utility model relates to a light path adjusting device and a laser cutting machine. The light path adjusting device comprises a base; the first movable seat is mounted on the base and can move relative to the base in the first direction; the second movable seat is used for being connected with the reflecting mirror, the second movable seat is installed on the first movable seat and can move relative to the first movable seat in the second direction, and the first direction intersects with the second direction. According to the light path adjusting device provided by the utility model, through the movement of the two movable seats in the first direction and the second direction, the position of the reflecting mirror surface can be freely adjusted within a set range, so that the adjustment of the light path is realized. The light path adjusting device is simple in structure, small in occupied space and capable of being matched with reflectors at all positions in a designed light path. The laser cutting machine provided by the embodiment of the invention has the corresponding beneficial effects due to the adoption of the light path adjusting device.

Description

Technical Field

[0001] The present application relates to the field of laser cutting machines, and in particular to a light path adjustment device of a laser light path reflector and a laser cutting machine. Background Art

[0002] In the field of laser cutting, in order to precisely control the shape and energy distribution of the laser beam, laser cutting machines generally use laser emitters with beam expansion and shaping devices, which include optical elements such as lenses, gratings, mirrors, prisms, and optical films. Through the combination of different elements, the input, focusing, deformation, and output of the light beam are achieved. In order to precisely control the shape and energy distribution of the laser beam, the layout of the different elements within the beam expansion and shaping device must be strictly designed, which also limits the layout of the laser emitter in the laser cutting machine and the initial angle of the laser emission. In other words, it is already difficult for existing laser emitters to independently adjust the output light path. At least one reflector must be used, and the position and angle of the reflector must be precisely adjusted to adjust the light path.

[0003] In the related art, when fine-tuning the reflector base, the laser can only be fired in a point-by-point manner, and the position of the laser landing on the target component is observed. Based on the result, the fastening components of the reflector base are manually removed, and the reflector base is reinstalled in the new position, and the laser is fired again to observe the landing position. After multiple attempts and multiple disassembly and reinstallation steps, until the laser can hit the correct position on the target component, the adjustment of the optical path is completed. This method is slow and seriously affects the efficiency of laser cutting. Therefore, it is necessary to design a device that meets the requirements of optical path adjustment. Utility Model Content

[0004] In view of this, an embodiment of the present application is intended to provide a light path adjustment device, comprising:

[0005] A base; a first movable seat, mounted on the base and movable relative to the base in a first direction; a second movable seat, used to connect with the reflector, the second movable seat being mounted on the first movable seat and movable relative to the first movable seat in a second direction, the first direction intersecting with the second direction.

[0006] In one embodiment, the optical path adjustment device also includes a first power structure for driving the first movable seat to move relative to the base along the first direction; the first power structure includes a first screw, the first movable seat has a first threaded hole, the first screw and the first threaded hole extend along the first direction, one end of the first screw is relatively fixed to the base along the first direction, and the other end is screwed into the first threaded hole, so that when the first screw rotates around its own axis, it drives the first movable seat to move relative to the base along the first direction.

[0007] In one embodiment, the base includes a base body and a first limit block arranged on the base body, the first limit block has a first through hole, the first through hole passes through the first limit block along the first direction, and the first screw is passed through the first through hole; the first power structure also includes a first adjusting handle and a first limit ring, the first adjusting handle is connected to the end of the first screw away from the first movable seat, the first limit ring is sleeved on the first screw, and the first adjusting handle and the first limit ring are respectively located on opposite sides of the first limit block along the first direction.

[0008] In one embodiment, the base also includes two first slide rails arranged on the base body, the first slide rails extend along the first direction, the two first slide rails are spaced apart along the second direction, the first movable seat and the first slide rail are slidably engaged along the first direction, the first screw is located between the two first slide rails, and the limit block is connected to one end of the first slide rail.

[0009] In one embodiment, anti-slip grooves are formed on the circumference of the first adjustment handle.

[0010] In one embodiment, the optical path adjustment device further includes a motor, the motor is fixed relative to the base, and the first screw is connected to an output end of the motor.

[0011] In one embodiment, the base, the first movable seat and the second movable seat are stacked along a height direction, and the first direction, the second direction and the height direction are perpendicular to each other.

[0012] In one embodiment, the first movable seat has at least one first limiting groove extending along the first direction, and the base further includes at least one first limiting column, which is fixed to the base body and slides with the first limiting groove along the first direction.

[0013] In one embodiment, the end of the first limiting column away from the base protrudes circumferentially to form a first pressure ring, and the inner surface of the groove wall of the first limiting groove protrudes to form a first limiting strip extending along the first direction, and the first limiting strip is located between the first pressure ring and the base.

[0014] Another aspect of an embodiment of the present application provides a laser cutting machine, comprising: an optical path adjustment device, a reflector, a laser source and a cutting head as described in any of the above embodiments, wherein the optical path adjustment device is arranged between the cutting head and the laser source, the reflector is arranged on the second movable seat, and the reflector is used to reflect the laser emitted by the laser source to the cutting head.

[0015] An optical path adjustment device provided in an embodiment of the present application enables the reflector surface to be freely adjusted within a set range by moving two movable seats in a first direction and a second direction, thereby adjusting the optical path. The optical path adjustment device has a simple structure, occupies a small space, and can be adapted to reflectors at various positions in the designed optical path. The laser cutting machine provided in an embodiment of the present application has corresponding beneficial effects due to the use of the above-mentioned protective structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of an optical path adjustment device according to an embodiment of the present application;

[0017] Figure 2 A schematic diagram of adjusting the light path toward a first direction in an embodiment of the present application;

[0018] Figure 3 A schematic diagram of adjusting the light path toward the second direction in one embodiment of the present application;

[0019] Figure 4 This is a schematic diagram of the connection between the first power structure and the first movable seat according to an embodiment of the present application;

[0020] Figure 5 This is a schematic diagram of the connection between the second power structure and the second movable seat according to an embodiment of the present application;

[0021] Figure 6 This is a disassembled schematic diagram of an optical path adjustment device including a base according to an embodiment of the present application;

[0022] Figure 7 This is a disassembled schematic diagram of an optical path adjustment device including a first movable seat according to an embodiment of the present application;

[0023] Figure 8 This is a disassembled schematic diagram of an optical path adjustment device including a second movable seat according to an embodiment of the present application;

[0024] Figure 9 This is a cross-sectional schematic diagram of an embodiment of the present application including a first pressure ring and a first limiting strip.

[0025] Description of Reference Numerals

[0026] Optical path adjustment device 10; base 11; base body 111; first limiting block 112; first through hole 112a; first slide rail 113; first limiting column 114; first pressure ring 1141; first movable seat 12; first threaded hole 12a; first movable seat body 121; second limiting block 122; second through hole 122a; second slide rail 123; first slide groove 12b; first limiting groove 12c; second limiting column 124; second Pressure ring 1241; first limiting strip 125; second movable seat 13; second threaded hole 13a; second slide groove 13b; second limiting groove 13c; second limiting strip 131; first power structure 14; first screw rod 141; first adjusting handle 142; first limiting ring 143; second power structure 15; second screw rod 151; second adjusting handle 152; second limiting ring 153; reflector 20; laser source 30; target component 40. DETAILED DESCRIPTION

[0027] It should be noted that, unless there is a conflict, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed description in the specific implementation methods should be understood as an explanation of this application and should not be regarded as an improper restriction on this application.

[0028] In the description of this application, the orientation or position relationship of "first direction", "second direction" and "height direction" is based on the accompanying drawings. Figures 1 to 8 The orientation or positional relationship shown in the accompanying drawings, where the "first direction" is the direction indicated by arrow L1 in the accompanying drawings, the "second direction" is the direction indicated by arrow L2 in the accompanying drawings, and the "height direction" is the direction indicated by arrow L3 in the accompanying drawings. It should be understood that these orientation terms are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting this application. In the description of this application, the terms "first" and "second" are only used to distinguish the description and should not be understood to indicate or imply relative importance.

[0029] In the field of laser cutting, in order to precisely control the shape and energy distribution of the laser beam, laser cutting machines generally use laser emitters with beam expansion and shaping devices, which include optical elements such as lenses, gratings, mirrors, prisms, and optical films. Through the combination of different elements, the input, focusing, deformation, and output of the light beam are achieved. In order to precisely control the shape and energy distribution of the laser beam, the layout of the different elements within the beam expansion and shaping device must be strictly designed, which also limits the layout of the laser emitter in the laser cutting machine and the output angle of the laser emission. In other words, it is already difficult for existing laser emitters to independently adjust the laser light path. At least one reflector must be used, and the position and angle of the reflector must be precisely adjusted to achieve adjustment of the light path.

[0030] In the related art, when fine-tuning the reflector base, the laser can only be fired in a point-by-point manner. The laser is reflected by the reflector and falls on the target component. The landing point of the laser on the target component is observed. Based on the result, the fastening components of the reflector base are manually removed, and the reflector base is reinstalled in the new position. The laser is then fired in a point-by-point manner to observe the landing point. After multiple attempts and multiple disassembly and reinstallation steps, until the laser can hit the correct position on the target component, the adjustment of the optical path is completed. This method is slow and seriously affects the efficiency of laser cutting.

[0031] Therefore, it is necessary to design a device to meet the adjustment requirements of the optical path. In order to solve the above technical problems, refer to Figure 1 In a first aspect of an embodiment of the present application, an optical path adjustment device 10 is provided, comprising a base 11, a first movable base 12, and a second movable base 13. The first movable base 12 is mounted on the base 11 and is movable relative to the base 11 in a first direction; the second movable base 13 is configured to connect to a reflector 20, is mounted on the first movable base 12, and is movable relative to the first movable base 12 in a second direction, the first direction intersecting the second direction.

[0032] It is understandable that the optical path adjustment device 10 disclosed in this application has no specific restrictions on the structures of the base 11, the first movable seat 12 and the second movable seat 13 and the order of connection between them. Figure 1 As shown, the first movable seat 12 and the second movable seat 13 may be plate-shaped metal parts, with the first movable seat 12 stacked on the base 11, and the second movable seat 13 stacked on the first movable seat 12. Similarly, the second movable seat 13 may be disposed on the base 11, and the first movable seat 12 may be disposed on the second movable seat 13. For another example, the base 11 may be a platform on a laser cutting machine, and the reflector 20 may be movably disposed on the base 11. At the same time, the first movable seat 12 and the second movable seat 13 may be two cylinder drive devices that drive the reflector 20.

[0033] Specifically, refer to Figure 2 and Figure 3, the reflector 20 and the optical path adjustment device 10 (not shown in the figure) are located at the corner of the designed optical path, that is, at the angle between the emission line of the laser source 30 in the optical path and the receiving line of the target component 40 receiving the light source. Among them, "emission" should be understood in a broad sense, and the output of laser light by the laser emitter and the reflection of laser light by different reflectors 20 in the optical path can also be referred to as "emission". In other words, the "laser source 30" can be the original laser emitter, or it can be any reflector 20 in the optical path that reflects the laser. Similarly, the "target component 40" can be the final laser cutting head, or it can be any reflector 20 in the optical path that receives the laser. When the optical path adjustment device 10 is in the default position, the landing point of the laser on the reflector 20 is A1, and the landing point on the target component 40 after reflection is B1. When the first movable seat 12 is moved in the first direction relative to the base 11, the reflector 20 will also move synchronously in the first direction, and the landing point of the laser on the reflector 20 will also change from point A1 to point A2, thereby causing the landing point of the laser on the target component 40 to change from point B1 to point B2. Similarly, when the second movable seat 13 is moved in the second direction, the reflector 20 will also move synchronously in the first direction, and the landing point of the laser on the reflector 20 will also change from point A1 to point A3, thereby causing the landing point of the laser on the target component 40 to change from point B1 to point B3.

[0034] It is understandable that in different optical path designs, the angle between the first direction and the second direction can be different angles. For example, the first direction can be perpendicular to the second direction, or can be at different angles such as 30°, 60°, 120°, or 150° with the second direction.

[0035] Thus, by moving the two movable seats in the first and second directions, the reflector 20 can be freely adjusted within a set range, thereby adjusting the optical path. The optical path adjustment device 10 has a simple structure, occupies a small space, and can be adapted to reflectors 20 at various positions in the designed optical path.

[0036] In one embodiment, referring to Figure 1 and Figure 4 The optical path adjustment device 10 also includes a first power structure 14 for driving the first movable seat 12 to move relative to the base 11 along the first direction; the first power structure 14 includes a first screw 141, the first movable seat 12 has a first threaded hole 12a, the first screw 141 and the first threaded hole 12a extend along the first direction, one end of the first screw 141 is relatively fixed to the base 11 along the first direction, and the other end is screwed into the first threaded hole 12a, so that when the first screw 141 rotates around its own axis, it drives the first movable seat 12 to move relative to the base 11 along the first direction.

[0037] Specifically, the first screw rod 141 and the first threaded hole 12 a cooperate with each other to form a set of screw rod propulsion structures, which can convert the rotational motion of the first screw rod 141 into the linear motion of the first movable seat 12 .

[0038] In this way, the setting of the first power structure 14 provides an operating space for the movement of the first movable seat 12 relative to the base 11. The first motion structure is used to control the movement of the first movable seat 12 instead of directly holding or moving the first movable seat 12. On the one hand, it can better control the direction and distance of movement of the first movable seat 12 to avoid deviations beyond the light path emission design. On the other hand, it also reduces the possibility of damage to the reflector 20 or the light path adjustment device 10 during the adjustment process.

[0039] Furthermore, by rationally designing the pitch and angle of the threads of the first screw 141 and the first threaded hole 12a, the distance of movement of the first movable seat 12 driven by each unit angle of rotation of the first screw 141 can be adjusted, thereby achieving higher control accuracy. When the distance of movement of the first movable seat 12 driven by each unit angle of rotation of the first screw 141 is smaller, it is easier to control the movement distance of the first movable seat 12, and the optical path adjustment device 10 can more accurately adjust the position of the reflector 20 in the optical path.

[0040] Furthermore, in one embodiment, a plurality of steel balls are disposed between the first screw 141 and the first threaded hole 12 a to reduce movement friction between the screw and the threaded hole, thereby increasing the service life of the optical path adjustment device 10 .

[0041] In one embodiment, referring to Figure 1 and Figure 5 The optical path adjustment device 10 also includes a second power structure 15, which is used to drive the second movable seat 13 to move along the second direction relative to the first movable seat 12; the second power structure 15 includes a second screw 151, and the second movable seat 13 has a second threaded hole 13a. The second screw 151 and the second threaded hole 13a extend along the second direction, one end of the second screw 151 is relatively fixed to the base 11 along the second direction, and the other end is screwed into the second threaded hole 13a, so that when the second screw 151 rotates around its own axis, it drives the second movable seat 13 to move along the second direction relative to the first movable seat 12.

[0042] The second power structure 15 is similar to the first power structure 14 in structure, mechanical connection relationship between components in the optical path adjustment device 10 , and functions, and will not be described in detail here.

[0043] It should be noted that the optical path adjustment device 10 may include only the first power structure 14 , or only the second power structure 15 , or may include both the first power structure 14 and the second power structure 15 .

[0044] In one embodiment, referring to Figure 1 and Figure 6 The base 11 includes a base body 111 and a first limit block 112 arranged on the base body 111, the first limit block 112 has a first through hole 112a, the first through hole 112a passes through the first limit block 112 along the first direction, and the first screw 141 is passed through the first through hole 112a; the first power structure 14 also includes a first adjusting handle 142 and a first limit ring 143, the first adjusting handle 142 is connected to the end of the first screw 141 away from the first movable seat 12, the first limit ring 143 is sleeved on the first screw 141, and the first adjusting handle 142 and the first limit ring 143 are respectively located on opposite sides of the first limit block 112 along the first direction.

[0045] Specifically, the first through hole 112a should be understood in a broad sense. The first through hole 112a can be any spatial structure that allows the first screw 141 to pass through the first limit block 112. For example, the first through hole 112a can be a circumferentially closed hole structure, so that the first screw 141 will not escape from the range of the first through hole 112a when rotating. Alternatively, the first through hole 112a can also be a circumferentially open hole structure, for example, referring to Figure 6 The top side of the through hole is open, which makes the installation and disassembly of the first power structure 14 more convenient and reduces the friction between the first power structure 14 and the hole wall of the first through hole 112a when rotating.

[0046] In this way, relying on the first adjusting handle 142 and the first limiting ring 143, the end of the first power structure 14 away from the first movable seat 12 can be clamped on the first through hole 112a, so that the first power structure 14 can be fixed on the base 11 to prevent the first screw 141 from being screwed into the first threaded hole 12a of the first movable seat 12 when the first power structure 14 is rotated, but the first movable seat 12 remains relatively stationary.

[0047] In one embodiment, a reference line may be provided on the first adjustment handle 142, and scale lines may be provided around the periphery of the first through hole 112a. By observing the reference line and scale lines, the rotation angle of the first power structure 14 can be more accurately determined. Furthermore, the distance traveled by the first movable seat 12 per unit rotation of the first power structure 14 can be calculated based on the pitch and angle relationship between the first screw 141 and the first threaded hole 12a. The corresponding distance traveled is then indicated on the scale lines, allowing for a more precise understanding of the travel distance of the first movable seat 12.

[0048] In one embodiment, referring to Figure 1 and Figure 7The first movable seat 12 includes a first movable seat body 121 and a second limit block 122 arranged on the first movable seat body 121, the second limit block 122 has a second through hole 122a, the second through hole 122a passes through the second limit block 122 along the second direction, and the second screw 151 is passed through the second through hole 122a; the second power structure 15 also includes a second adjusting handle 152 and a second limit ring 153, the second adjusting handle 152 is connected to the end of the second screw 151 away from the second movable seat 13, the second limit ring 153 is sleeved on the second screw 151, and the second adjusting handle 152 and the second limit ring 153 are respectively located on opposite sides of the second limit block 122 along the second direction.

[0049] Among them, the structure of the second limit block 122, the second limit ring 153 and the second adjustment handle 152, the mechanical connection relationship between them and the various components in the optical path adjustment device 10, and the functions they play are similar to those of the first limit block 112, the first limit ring 143 and the first adjustment handle 142, and will not be repeated here.

[0050] It should be noted that, only the base 11 may include the first limit block 112, and the first power structure 14 may include the first adjusting handle 142 and the first limit ring 143; or only the first movable seat 12 may include the second limit block 122, and the second power structure 15 may include the second adjusting handle 152 and the second limit ring 153; or the seat may include the first limit block 112, the first power structure 14 may include the first adjusting handle 142 and the first limit ring 143, and at the same time the first movable seat 12 may include the second limit block 122, and the second power structure 15 may include the second adjusting handle 152 and the second limit ring 153.

[0051] In one embodiment, referring to Figure 6 The base 11 also includes two first slide rails 113 arranged on the base body 111, the slide rails extend along the first direction, the two first slide rails 113 are arranged at intervals along the second direction, the first movable seat 12 slides with the first slide rail 113 along the first direction, the first screw 141 is located between the two first slide rails 113, and the first limit block 112 is connected to one end of the first slide rail 113.

[0052] Specifically, refer to Figure 4 and Figure 7 A first slide groove 12b is formed on the first movable seat 12 at a position relative to the first slide rail 113, and cooperates with the first slide rail 113. Furthermore, a plurality of pulleys can be provided in the first slide groove 12b, so that the sliding friction between the slide rail and the slide groove is converted into rolling friction, thereby reducing the movement resistance of the first movable seat 12.

[0053] In this way, the first slide rail 113 controls the movement of the first movable seat 12 in the first direction, thereby preventing the first movable seat 12 from deviating in the moving direction.

[0054] In one embodiment, referring to Figure 7 The first movable seat 12 also includes two second slide rails 123 arranged on the first movable seat body 121, the slide rails extend along the second direction, the two second slide rails 123 are arranged at intervals along the first direction, the second movable seat 13 and the second slide rails 123 slide together along the second direction, the second screw 151 is located between the two second slide rails 123, and the second limit block 122 is connected to one end of the second slide rail 123.

[0055] The structure of the second slide rail 123 , the mechanical connection relationship between the second slide rail 123 and the components in the optical path adjustment device 10 , and the functions the second slide rail 123 plays are similar to those of the first slide rail 113 , and will not be described in detail herein.

[0056] It should be noted that only the base 11 may include two first slide rails 113 , only the first movable seat 12 may include two second slide rails 123 , or both the base 11 and the first movable seat 12 may include two second slide rails 123 .

[0057] In one embodiment, anti-slip grooves are formed around the first adjustment handle 142. Similarly, in another embodiment, anti-slip grooves are also formed around the second adjustment handle 152. The provision of anti-slip grooves can increase the coefficient of friction around the first adjustment handle 142 and the second adjustment handle 152, making manual rotation of the first power structure 14 or the second power structure 15 more convenient.

[0058] In the embodiment described above, an operator can manually rotate the first screw 141 to drive the first movable seat 12 to move in a first direction relative to the base 11. In other embodiments, the optical path adjustment device 10 may include a motor, which is fixed relative to the base 11, and the first screw 141 is connected to the output end of the motor. In this way, the motor can be used to drive the first screw 141 to rotate. Similarly, in another embodiment, the optical path adjustment device 10 also includes a second motor, and the second screw 151 is connected to the output end of the second motor.

[0059] In one embodiment, referring to Figure 1 As shown, the base 11, the first movable seat 12 and the second movable seat 13 are stacked along the height direction, and the first direction, the second direction and the height direction are perpendicular to each other.

[0060] In this way, the stacked arrangement can greatly reduce the footprint of the optical path adjustment device 10, making the overall volume of the optical path adjustment device 10 smaller, thereby making the setting position of the optical path adjustment device 10 on the laser cutting machine more flexible, providing convenience for the design of the optical path.

[0061] In one embodiment, referring to Figure 6 and Figure 7 The first movable seat 12 has at least one first limiting groove 12c extending along the first direction, and the base 11 also includes at least one first limiting column 114, which is fixed to the base body 111 and slides with the first limiting groove 12c along the first direction.

[0062] Specifically, when the first movable seat 12 moves in the first direction, the first limiting post 114 also moves in the first limiting slot 12c. In this way, the length of the first limiting slot 12c in the first direction can be reasonably designed to adapt to the preset range of movement of the optical path adjustment device 10.

[0063] Thus, when the first movable seat 12 moves to the preset limit position, the first limiting groove 12 c will block the first limiting column 114 from further moving, so that the first movable seat 12 will not continue to move beyond the limit, thereby preventing the first movable seat 12 from separating from the base 11.

[0064] Further, refer to Figure 6 The number of first limiting grooves 12c can be multiple, with every two first limiting grooves 12c extending in a straight line. The number of first limiting posts 114 corresponding to each first limiting groove 12c is the same as the number of first limiting grooves 12c. In this way, the provision of multiple limiting grooves and limiting posts provides a better guiding effect, preventing the first movable seat 12 from rotating around a single first limiting post 114 during movement.

[0065] In one embodiment, referring to Figure 7 and Figure 8 The second movable seat 13 has at least one second limiting groove 13c extending along the second direction, and the first movable seat 12 also includes at least one second limiting column 124, which is fixed to the first movable seat body 121 and slides with the second limiting groove 13c along the second direction.

[0066] Among them, the structure of the second limiting groove 13c and the second limiting column 124, the mechanical connection relationship between each component in the optical path adjustment device 10, and the role they play are similar to those of the first limiting groove 12c and the first limiting column 114, and will not be repeated here.

[0067] It should be noted that only the first movable seat 12 may have the first limiting groove 12c, and the base 11 may include the first limiting column 114; only the second movable seat 13 may have the second limiting groove 13c, and the first movable seat 12 may include the second limiting column 124; or the first movable seat 12 may have the first limiting groove 12c, the base 11 may include the first limiting column 114, and the second movable seat 13 may have the second limiting groove 13c, and the first movable seat 12 may include the second limiting column 124.

[0068] In one embodiment, referring to Figure 9 As shown, one end of the first limiting column 114 away from the base 11 protrudes circumferentially to form a first pressure ring 1141, and the inner surface of the groove wall of the first limiting groove 12c protrudes to form a first limiting strip 125 extending along the first direction. The first limiting strip 125 is located between the first pressure ring 1141 and the base 11.

[0069] Thus, when the first movable seat 12 moves along the first direction, the first pressing ring 1141 presses on the first limiting bar 125 to provide a limit in the height direction, thereby preventing the first movable seat 12 from being tilted by the first screw 141 during movement.

[0070] Furthermore, a rubber block may be provided on the first pressure ring 1141 as a buffer to reduce possible collision damage between the first pressure ring 1141 and the first limiting groove 12c when the first movable seat 12 moves to the limit.

[0071] In one embodiment, the end of the second limiting column 124 away from the first movable seat 12 protrudes circumferentially to form a second pressure ring 1241, and the inner surface of the groove wall of the second limiting groove 13c protrudes to form a second limiting strip 131 extending along the second direction. The second limiting strip 131 is located between the second pressure ring 1241 and the first movable seat 12.

[0072] Among them, the structures of the second pressure ring 1241 and the second limiting strip 131, the mechanical connection relationship between them and various components in the optical path adjustment device 10, and the functions they play are similar to those of the first pressure ring 1141 and the first limiting strip 125 and are not repeated here.

[0073] It should be noted that, only the first limiting column 114 may be formed with the first pressure ring 1141, and the first limiting groove 12c may be formed with the first limiting strip 125; or only the second limiting column 124 may be formed with the second pressure ring 1241, and the second limiting groove 13c may be formed with the second limiting strip 131; or the first limiting column 114 may be formed with the first pressure ring 1141, and the first limiting groove 12c may be formed with the first limiting strip 125, and at the same time, the second limiting column 124 may be formed with the second pressure ring 1241, and the second limiting groove 13c may be formed with the second limiting strip 131.

[0074] On the other hand, an embodiment of the present application provides a laser cutting machine, comprising: the optical path adjustment device 10, the reflector 20, the laser source 30 and the cutting head described in any of the above embodiments, the optical path adjustment device 10 is arranged between the cutting head and the laser source 30, the reflector 20 is arranged on the second movable seat 13, and the reflector 20 is used to reflect the laser emitted by the laser source 30 to the cutting head.

[0075] The various embodiments / implementations provided in this application can be combined with each other without causing any contradiction.

[0076] The foregoing description is merely a preferred embodiment of the present application and is not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. An optical path adjustment device, characterized in that: include: base; a first movable seat, mounted on the base and movable relative to the base along a first direction; The second movable seat is used to connect with the reflector. The second movable seat is installed on the first movable seat and can move relative to the first movable seat along a second direction. The first direction intersects with the second direction.

2. The optical path adjustment device according to claim 1, characterized in that: The optical path adjustment device further includes a first power structure for driving the first movable seat to move relative to the base along the first direction; The first power structure includes a first screw, the first movable seat has a first threaded hole, the first screw and the first threaded hole extend along the first direction, one end of the first screw is relatively fixed to the base along the first direction, and the other end is screwed into the first threaded hole, so that when the first screw rotates around its own axis, it drives the first movable seat to move relative to the base along the first direction.

3. The optical path adjustment device according to claim 2, characterized in that: The base includes a base body and a first limiting block provided on the base body, the first limiting block having a first through hole, the first through hole passing through the first limiting block along the first direction, and the first screw rod passing through the first through hole; The first power structure also includes a first adjusting handle and a first limiting ring. The first adjusting handle is connected to an end of the first screw away from the first movable seat. The first limiting ring is sleeved on the first screw. The first adjusting handle and the first limiting ring are respectively located on opposite sides of the first limiting block along the first direction.

4. The optical path adjustment device according to claim 3, characterized in that: The base also includes two first slide rails arranged on the base body, the first slide rails extend along the first direction, the two first slide rails are spaced apart along the second direction, the first movable seat and the first slide rail slide together along the first direction, the first screw is located between the two first slide rails, and the limit block is connected to one end of the first slide rail.

5. The optical path adjustment device according to claim 3, characterized in that: Anti-slip grooves are formed on the circumference of the first adjustment handle.

6. The optical path adjustment device according to claim 2, characterized in that: The optical path adjustment device further includes a motor, which is fixed relative to the base, and the first screw is connected to an output end of the motor.

7. The optical path adjustment device according to any one of claims 1 to 6, characterized in that: The base, the first movable seat and the second movable seat are stacked along a height direction, and the first direction, the second direction and the height direction are perpendicular to each other.

8. The optical path adjustment device according to claim 7, characterized in that: The first movable seat has at least one first limiting groove extending along the first direction, and the base further includes at least one first limiting column, which is fixed to the base body and slidingly engaged with the first limiting groove along the first direction.

9. The optical path adjustment device according to claim 8, characterized in that: One end of the first limiting column away from the base protrudes circumferentially to form a first pressure ring, and the inner surface of the groove wall of the first limiting groove protrudes to form a first limiting strip extending along the first direction, and the first limiting strip is located between the first pressure ring and the base.

10. A laser cutting machine, characterized in that: include: The optical path adjustment device, reflector, laser source and cutting head according to any one of claims 1 to 9, wherein the optical path adjustment device is arranged between the cutting head and the laser source, the reflector is arranged on the second movable seat, and the reflector is used to reflect the laser emitted by the laser source to the cutting head.

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