Mini full-automatic focusing and following anti-collision laser device

Abstract

The application discloses a kind of miniature full-automatic focusing follow-up anti-collision laser devices, including focusing mirror, follower and nozzle, follower is movably arranged below focusing mirror, follower has first laser channel;Nozzle is connected between the bottom of follower by magnetic force adsorption, nozzle has second laser channel with first laser channel communication, the light beam after focusing mirror focusing can pass through first laser channel and second laser channel;Drive structure is used to drive follower to move up and down.The nozzle of the application is connected with follower by magnetic force, so that it can collide and fall off when encountering horizontal obstacles, achieving horizontal anti-collision, drive structure can drive follower to move up and down, so that it can quickly lower or raise height when encountering part surface fall empty and mutation, achieving vertical anti-collision, drive structure can drive nozzle to approach the surface of machined part, i.e., it can move following the shape of part surface, achieving following function.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of laser technology, in particular to a micro full-automatic focusing following anti-collision laser device. BACKGROUND

[0002] With the continuous development of fiber laser technology, the types and functions of laser equipment have been greatly improved, and laser equipment provides great convenience for cutting and welding of different materials (metal and non-metal), especially in the automotive industry.

[0003] Because the existing cutting head or welding head is often constrained by the machined parts, such as part surface protrusions, hollows, large corners, etc., it is easy to collide with the cutting head, thereby causing damage to the equipment, and laser safety accidents are prone to occur. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application proposes a micro full-automatic focusing following anti-collision laser device.

[0005] The micro full-automatic focusing following anti-collision laser device according to the first aspect of the present application comprises a focusing mirror, a follower and a nozzle, the follower is movably arranged below the focusing mirror, the follower has a first laser channel; the nozzle is connected with the bottom of the follower by magnetic attraction, the nozzle has a second laser channel in communication with the first laser channel, the light beam focused by the focusing mirror can pass through the first laser channel and the second laser channel; and a driving structure is used to drive the follower to move up and down.

[0006] The micro full-automatic focusing following anti-collision laser device according to the present application has at least the following technical effects: the nozzle is magnetically connected with the follower, so that the nozzle can be knocked off when it encounters an obstacle in the horizontal direction, achieving the purpose of horizontal anti-collision; the driving structure can drive the follower to move up and down, so that when the follower encounters a part surface hollow and mutation, the driving structure can quickly lower or raise the height of the follower, thereby achieving the purpose of vertical anti-collision; and the driving structure can drive the nozzle to approach the surface of the machined part, so that the height of the nozzle can follow the height change of the part, i.e. it can follow the shape of the part surface to move, achieving the following function.

[0007] According to some embodiments of the present application, the device further comprises a housing having a sliding cavity, the follower is in sliding fit with the sliding cavity, the driving structure comprises a moving coil, a fixed coil and a control device, the moving coil is sleeved on the follower and fixed on the follower, the fixed coil is located between the inner wall of the sliding cavity and the moving coil, and the control device is used to control the current size of the moving coil and the fixed coil.

[0008] According to some embodiments of the present application, the bottom of the follower is provided with a first cavity, a armature is arranged in the first cavity, and a micro coil is arranged outside the armature, and the nozzle is made of metal.

[0009] According to some embodiments of the present application, the bottom of the follower is provided with a second cavity, a guiding pin is arranged in the second cavity and can be extended and retracted, and the top of the nozzle is provided with a recess matched with the guiding pin.

[0010] According to some embodiments of the present application, a spring is arranged between the guiding pin and the bottom of the second cavity, one side of the guiding pin is provided with a sliding groove, and the follower is provided with a positioning pin, and a part of the positioning pin extends into the sliding groove.

[0011] According to some embodiments of the present application, the focusing mirror is arranged on a frame, the frame is provided with a plurality of connecting portions, and a plurality of lifting structures are connected with the connecting portions respectively.

[0012] According to some embodiments of the present application, the lifting structure comprises a motor, a nut and a vertical screw rod, the motor is connected with the screw rod, the nut is arranged on the screw rod, and the nut is movably connected with the frame.

[0013] According to some embodiments of the present application, the lifting structure further comprises a connecting piece and a ring piece, the nut is provided with a through groove, the inner wall of the through groove is provided with a first recess matched with the ring piece, the side wall of the connecting piece is provided with a second recess matched with the ring piece, the connecting piece is arranged in the through groove, the ring piece is arranged between the first recess and the second recess, a gap is arranged between the ring piece and the connecting piece, the bottom of the connecting piece is provided with a universal ball head, and the universal ball head is connected with the frame.

[0014] According to some embodiments of the present application, the sliding cavity is a lower opening structure, the side wall of the follower is provided with a first boss, the baffle is sleeved on the follower and fixed on the shell, the first boss is arranged in the sliding cavity and above the baffle.

[0015] According to some embodiments of the present application, the side wall of the follower is provided with a second boss, the second boss is arranged above the first boss, and a moving coil is arranged between the first boss and the second boss.

[0016] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be understood through practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0017] Additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0018] Figure 1 A sectional view of the micro full-automatic focusing and following anti-collision laser device according to an embodiment of the present application;

[0019] Figure 2 A sectional view of the micro full-automatic focusing and following anti-collision laser device according to an embodiment of the present application; Figure 1 An enlarged view of B shown in the figure;

[0020] Figure 3 An enlarged view of A shown in the figure; Figure 1 An enlarged view of A shown in the figure;

[0021] Figure 4 An enlarged view of C shown in the figure. Figure 1

[0022] Reference signs: focusing mirror 100, virtual light beam 101, follower 200, first laser channel 210, first concave cavity 220, armature 221, micro coil 222, second concave cavity 230, guide pin 231, sliding groove 2311, spring 232, positioning pin 240, first boss 250, second boss 260, nozzle 300, second laser channel 310, recess 320, driving structure 400, moving coil 410, fixed coil 420, housing 500, sliding cavity 510, lifting structure 600, motor 610, nut 620, through groove 621, extension 622, lead screw 630, connecting piece 640, circular ring piece 650, universal ball head 641, mirror holder 700, baffle 800. DETAILED DESCRIPTION

[0023] Embodiments of the present application are described in detail below with reference to the accompanying drawings, in which the same or similar elements or elements having the same or similar functions are denoted by the same or similar reference numerals throughout. The embodiments described below by reference to the accompanying drawings are exemplary and are intended only to explain the present application, and should not be understood as limiting the present application.

[0024] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, etc., is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be understood as limiting the present application.

[0025] ​In the description of the present application, the meaning of multiple is more than two, greater than, less than, more than, etc. is understood as not including the number, above, below, within, etc. is understood as including the number. If it is described to the first, second, only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0026] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installation, connection, etc. should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0027] Referring to Figure 1 As shown, the miniature full-automatic focusing and following anti-collision laser device according to the embodiment of the present application comprises a focusing mirror 100, a follower 200 and a nozzle 300, the follower 200 is movably arranged below the focusing mirror 100, the follower 200 has a first laser channel 210; the nozzle 300 is connected with the bottom of the follower 200 by magnetic attraction, the nozzle 300 has a second laser channel 310 which is communicated with the first laser channel 210, the light beam focused by the focusing mirror 100 can pass through the first laser channel 210 and the second laser channel 310; a driving structure 400 is used to drive the follower 200 to move up and down.

[0028] For example, the miniature full-automatic focusing and following anti-collision laser device further comprises a shell 500, the shell 500 is in a cylindrical shape, the focusing mirror 100 and a part of the follower 200 are arranged in the shell 500; an interface can be arranged at the upper end of the shell 500, which can be connected with an optical fiber laser, a virtual light beam 101 is formed by the light focusing effect of the focusing mirror 100, the virtual light beam 101 is emitted downward from the middle of the nozzle 300 through the first laser channel 210 and the second laser channel 310.

[0029] The nozzle 300 is connected with the follower 200 by magnetic attraction, so that when the nozzle 300 encounters an obstacle in the horizontal direction, it can collide and fall off, achieving the purpose of horizontal anti-collision; the driving structure 400 can drive the follower 200 to move up and down, so that when the surface of the part is empty or changes suddenly, the driving structure 400 can quickly lower or raise the height of the follower 200, thereby achieving the purpose of vertical anti-collision; the laser device has multiple direction anti-collision functions, effectively avoiding the collision of the device and avoiding the damage of the equipment; the driving structure 400 can drive the nozzle 300 to approach the surface of the machined part, so that the height of the nozzle 300 can follow the change of the height of the part, i.e. can follow the movement of the shape of the part surface, realizing the following function.

[0030] In some embodiments of the present application, as Figure 1As shown, the housing 500 is provided with a sliding cavity 510, the follower 200 is in sliding fit with the sliding cavity 510, the driving structure 400 comprises a moving coil 410, a fixed coil 420 and a control device (not shown in the figure), the moving coil 410 is sleeved on the follower 200 and fixed on the follower 200, the fixed coil 420 is located between the inner wall of the sliding cavity 510 and the moving coil 410, and the control device is used for controlling the current size of the moving coil 410 and the fixed coil 420.

[0031] For example, the bottom of the housing 500 is provided with the sliding cavity 510, the focusing mirror 100 is located above the sliding cavity 510, the virtual light beam 101 after light condensation of the focusing mirror 100 passes through the sliding cavity 510, the first laser channel 210 and the second laser channel 310, and is emitted downward from the middle of the nozzle 300; the middle part of the follower 200 is in sliding fit with the sliding cavity 510, so that the follower 200 is guided by the sliding cavity 510 and moves up and down along the sliding cavity 510; the moving coil 410 and the fixed coil 420 are annular, the moving coil 410 is sleeved on the outer periphery of the top of the follower 200 and fixed on the follower 200, and the fixed coil 420 is fixed between the inner wall of the sliding cavity 510 and the moving coil 410.

[0032] In work, the electromagnetic force is generated by controlling the current size of the moving coil 410 and the fixed coil 420 by the control device, and then the up and down movement of the follower 200 is realized, wherein the current size can be adjusted by measuring the distance between the nozzle 300 and the surface of the part by the control device, so as to realize the spraying function.

[0033] In further embodiments of the present application, as shown in Figure 1 、 2 The bottom of the follower 200 is provided with a first recess cavity 220, the first recess cavity 220 is provided with an armature 221, the armature 221 is provided with a micro coil 222 outside, and the nozzle 300 is made of metal.

[0034] In work, the micro coil 222 is electrified to attract the nozzle 300, so that the nozzle 300 is fixed with the follower 200 and sealed.

[0035] The laser device controls the attraction of the nozzle 300 and the lifting of the follower 200 through electromagnetic principle, when each coil is not electrified, the metal powder or residue attached on the laser device can automatically fall off, which is convenient for cleaning.

[0036] In further embodiments of the present application, as shown in Figure 1 、 3As shown in the drawings, the bottom of the follower 200 is provided with a second cavity 230, the second cavity 230 is provided with a guiding pin 231 capable of extending up and down, and the top of the nozzle 300 is provided with a recess 320 matched with the guiding pin 231.

[0037] The guiding pin 231 can extend downward, and when the nozzle 300 is installed, the recess 320 of the nozzle 300 can be matched with the bottom of the guiding pin 231 to realize positioning, which facilitates the installation of the nozzle 300 and ensures the sealing of the follower 200 and the nozzle 300.

[0038] In further embodiments of the present application, as shown in Figure 1 、 3 The guiding pin 231 is provided between the bottom of the second cavity 230 and the spring 232, one side of the guiding pin 231 is provided with a sliding groove 2311, the follower 200 is provided with a positioning pin 240, and a part of the positioning pin 240 extends into the sliding groove 2311. The spring 232 is provided to ensure that the guiding pin 231 extends outward, thereby ensuring that the positioning function can be achieved; the positioning pin 240 is matched with the sliding groove 2311 to limit the extension length of the guiding pin 231, and prevent the guiding pin 231 from falling out of the follower 200.

[0039] In some embodiments of the present application, as shown in Figure 1 、 4 The present application further comprises a plurality of lifting structures 600 and a movable frame 700, the focusing mirror 100 is installed on the frame 700, the frame 700 has a plurality of connecting parts, and the plurality of lifting structures 600 are connected with the plurality of connecting parts respectively, so that each lifting structure 600 can drive the connecting part connected therewith to move upward or downward, when synchronously driven, the frame 700 can move upward or downward by a distance and keep parallel to the horizontal plane, and when driven individually, the frame 700 can be arranged obliquely; the plurality of lifting structures 600 are provided to realize the adjustment and constraint of the multiple direction degrees of freedom of the frame 700, thereby realizing automatic focusing.

[0040] In further embodiments of the present application, as shown in Figure 1 、 4As shown, the lifting structure 600 comprises a motor 610, a nut 620 and a vertical arranged screw rod 630, the motor 610 is connected with the screw rod 630, the nut 620 is installed on the screw rod 630, the nut 620 is movably connected with the frame 700, the screw rod 630 and the nut 620 are adopted to realize fine adjustment and coarse adjustment of focusing, replace the existing manual focusing, improve the focusing precision, and effectively ensure that the laser beam can be emitted from the center of the nozzle 300. The motor 610 is started, the motor 610 drives the ball screw to rotate, and then the up-down movement of the nut 620 is realized, since the nut 620 is connected with the frame 700 of the focusing mirror 100, and then the part connected with the nut 620 of the frame 700 is moved upward or downward; the number of the lifting structure 600 is the same as the number of the connecting part.

[0041] For example, the connecting part is four, the lifting structure 600 is also four, the frame 700 is rectangular, the connecting parts are respectively located at the four corners of the frame 700, the four lifting structures 600 are distributed in a rectangular shape, when the motors 610 of the four lifting structures 600 are started synchronously, the frame 700 can be moved upward or downward, when the motors 610 of the four lifting structures 600 are started asynchronously or individually, the frame 700 can be set to be inclined.

[0042] In further embodiments of the present application, the lifting structure 600 further comprises a connecting piece 640 and a circular ring piece 650, the nut 620 has a through groove 621, the inner wall of the through groove 621 has a first recess (not shown in the figure) matched with the circular ring piece 650, the side wall of the connecting piece 640 is provided with a second recess (not shown in the figure) matched with the circular ring piece 650, the connecting piece 640 is arranged in the through groove 621, the circular ring piece 650 is arranged between the first recess and the second recess, there is a gap between the connecting piece 640 and the circular ring piece 650, the bottom of the connecting piece 640 is provided with a universal ball head 641, and the universal ball head 641 is connected with the frame 700.

[0043] For example, one side of the nut 620 has an extension 622, the extension 622 has a through groove 621 extending in the up-down direction, the through groove 621 has a first recess recessed in the radial direction of the through groove 621, the cross section of the first recess is arc-shaped, the side wall of the connecting piece 640 is provided with a second recess recessed in the radial direction of the connecting piece 640, the cross section of the second recess is arc-shaped, the bottom of the connecting piece 640 is provided with a universal ball head 641, the second recess is located above the universal ball head 641, the universal ball head 641 is connected with the frame to enable the connecting piece 640 to rotate relative to the frame, the connecting piece 640 is arranged in the through groove 621, and the circular ring piece 650 is arranged in the first recess and the second recess.

[0044] When the angle of the frame 700 needs to be adjusted, the screw rod 630 drives the nut 620 to rise or fall, so that the nut 620 drives one end of the frame 700 to be lifted or lowered through the connecting piece 640, so that the frame 700 is inclined; specifically, as shown in Figure 4 Fig. 11, taking one end of the frame 700 as an example, the screw rod 630 drives the nut 620 to rise, the nut 620 drives the connecting piece 640 to rise, the connecting piece 640 drives one end of the frame 700 connected thereto to rise, and at the same time, the universal ball head 641 at the bottom of the connecting piece 640 rotates right relative to the frame. Since the connecting piece 640 and the circular ring piece 650 are gap-fitted, the connecting piece 640 can be deflected right relative to the circular ring piece 650, and the connecting piece 640 adopts such a structure to ensure that the frame 700 is driven to be inclined. Wherein, focusing does not need to make the frame 700 tilt by a large angle, and further, the gap-fitting of the circular ring piece 650 and the connecting piece 640 matches the structure of the universal ball head 641, so that the connecting pieces 640 of multiple lifting structures can drive the frame 700 to tilt by a certain angle in any direction, realizing the adjustment and constraint of the multiple degrees of freedom of the frame 700.

[0045] In further embodiments of the present application, as shown in Figure 1 , 4 The motor 610 is located above the screw rod 630, so that the lifting structure 600 does not occupy the bottom space of the shell 500, so that the sliding cavity 510 has sufficient space, so that the laser device structure is compact, occupies small space, is low in cost, easy to install and maintain.

[0046] In further embodiments of the present application, as shown in Figure 1 , further comprising a baffle 800, the sliding cavity 510 is a lower opening structure, the side wall of the follower 200 has a first boss 250, the baffle 800 is sleeved outside the follower 200 and fixed on the shell 500, the first boss 250 is located in the sliding cavity 510 and above the baffle 800. By disassembling the baffle 800, the follower 200, the moving coil 410 and the fixed coil 420 can be disassembled.

[0047] In further embodiments of the present application, as shown in Figure 1 , the side wall of the follower 200 has a second boss 260, the second boss 260 is located above the first boss 250, and the moving coil 410 is arranged between the first boss 250 and the second boss 260 to stably fix the moving coil 410.

[0048] Further comprising a control system, the control system can control the motor 610, the control device and the micro coil 222, and realize full-automatic focusing, following and anti-collision.

[0049] In the description of the specification, reference to "some embodiments" or "it is contemplated" and the like means that a particular feature, structure, material, or characteristic being described is included in at least one embodiment or example of the application. The appearances of the phrases "in some embodiments" or "it is contemplated" in various places in the specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0050] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since the scope of the application will be defined by the appended claims and their equivalents.

Claims

1. A miniature full-automatic focusing and collision-avoiding laser device, characterized in that, The utility model relates to a laser focusing device, including: Focus mirror; Follow-up piece, be provided below focus mirror and can move up and down, follow-up piece have first laser channel; Nozzle, nozzle and follow-up piece bottom between through magnetic force adsorption connection, nozzle have with first laser channel intercommunication second laser channel, focus mirror focused light beam can pass through first laser channel and second laser channel; Driving structure for driving follow-up piece moves up and down; Still including four lifting structure and movable frame, focus mirror is installed on movable frame, movable frame have four connecting part, lifting structure with connecting part one to one arrangement; The utility model relates to a laser focusing device, including: Lifting structure still including connecting piece and circular ring spare, nut have through groove, through groove inner wall have with circular ring spare match first recess, connecting piece side wall be equipped with with circular ring spare match second recess, connecting piece place in through groove, circular ring spare place in first recess with second recess between, circular ring spare with connecting piece between have gap, connecting piece bottom have universal ball head, universal ball head with movable frame connect; Four lifting structure be rectangular distribution, four lifting structure driving movable frame tilt arrangement can be brought about when the motor synchronous start of four lifting structure, four lifting structure motor different step start or alone start, can make movable frame tilt arrangement; Still including shell, shell have sliding cavity, follow-up piece with sliding cavity sliding cooperation, driving structure include moving coil, fixed coil and control device, moving coil cover follow-up piece outside and fixed on follow-up piece, fixed coil be located between the inner wall of sliding cavity and moving coil, control device is used for controlling the current size of moving coil and fixed coil.

2. The miniature auto-focus follow-up anti-collision laser device according to claim 1, characterized in that: The bottom of the follow-up piece is provided with a first recess, a armature is arranged in the first recess, and a micro coil is arranged outside the armature.

3. The miniature auto-focus follow-up anti-collision laser device according to claim 1, characterized in that: The bottom of the follow-up piece is provided with a second recess, the second recess is provided with a guide pin that can be extended up and down, and the top of the nozzle is provided with a recess that matches the guide pin.

4. The miniature auto-focus and collision avoidance laser device of claim 3, wherein: A spring is arranged between the guide pin and the bottom of the second recess, one side of the guide pin is provided with a sliding groove, and the follow-up piece is provided with a positioning pin, part of the positioning pin extends into the sliding groove.

5. The miniature auto-focus follow-up anti-collision laser device of claim 1, wherein: Still including a baffle, the sliding cavity is a lower opening structure, the side wall of the follow-up piece is provided with a first boss, the baffle is sleeved outside the follow-up piece and fixed on the shell, the first boss is located in the sliding cavity and above the baffle.

6. The miniature auto-focus and collision avoidance laser device of claim 5, wherein: The side wall of the follow-up piece is provided with a second boss, the second boss is located above the first boss, and a moving coil is arranged between the first boss and the second boss. The utility model relates to a laser focusing device, including:

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