CN116460424A - Laser welding galvanometer system with cold and heat exchange flow channel - Google Patents
Laser welding galvanometer system with cold and heat exchange flow channel Download PDFInfo
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- CN116460424A CN116460424A CN202310629561.7A CN202310629561A CN116460424A CN 116460424 A CN116460424 A CN 116460424A CN 202310629561 A CN202310629561 A CN 202310629561A CN 116460424 A CN116460424 A CN 116460424A
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- 238000003466 welding Methods 0.000 title claims abstract description 41
- 230000003287 optical effect Effects 0.000 claims abstract description 34
- 230000033001 locomotion Effects 0.000 claims abstract description 28
- 230000007306 turnover Effects 0.000 claims abstract description 25
- 230000001360 synchronised effect Effects 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims description 12
- 230000008859 change Effects 0.000 claims description 5
- 230000001154 acute effect Effects 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 2
- 238000012545 processing Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
- B23K26/0643—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising mirrors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/04—Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
- B23K26/046—Automatically focusing the laser beam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
- B23K26/703—Cooling arrangements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a laser welding galvanometer system with a cold and heat exchange flow channel, which comprises a device seat, a dynamic focusing module and a co-rotating reflecting mirror module, wherein the cold and heat exchange flow channel which is communicated with each other is arranged in the device seat, the laser welding galvanometer system also comprises a reflecting mirror adjusting module, the vertical distance from the inlet of the device seat of a laser input channel to the center of a reflecting mirror of the reflecting mirror adjusting module is H, and the center of the reflecting mirror adjusting module to a first turnover reflecting mirror unit is vertical L, wherein H is more than or equal to 2.5L. In the synchronous and same-speed overturning of the first and second overturning reflector units, the invention not only controls the movement inertia outside the axial direction of the focusing lens to keep the optical axis concentric, but also enables the rotation inertia formed by the overturning reflector and the driving piece to be consistent, simultaneously miniaturizes the structure in the proportion of a specific height and a specific length, and also can radiate heat to internal elements.
Description
The application is a divisional application of a laser welding galvanometer system based on X, Y, Z triaxial motion, with application number 202310265873.4 and application date 2023, 3 and 20.
Technical Field
The invention belongs to the technical field of laser galvanometer, and particularly relates to a laser welding galvanometer system with a cold-heat exchange runner.
Background
Galvanometers are simply referred to as scanning galvanometers used in the laser industry and are known by the term high speed scanning galvanometers (also known as Galvo scanning system). The design concept of the galvanometer is completely taken over by the design method of the ammeter, the needles are replaced by lenses, and the signals of the probes are replaced by direct current signals of-5V to 5V or-10V to 10V controlled by a computer so as to complete preset actions. The typical control system uses a pair of turning mirrors as in the turning mirror scanning system, except that the stepper motor driving the lens is replaced by a servo motor.
However, during actual use, the following technical drawbacks may exist:
1) In the high-speed reciprocating motion of the foldback mirror, once the gravity center of the installed mirror seat is unstable, or inertia beyond the motion direction is generated in the motion, the mirror plate deflects relatively, so that the concentric contact ratio is directly influenced, and the focusing precision is low;
2) The conventional laser incidence angle and the conventional laser output angle are vertical, so that in some special working conditions, the processing requirements are difficult to meet;
3) After the turning mirror is set to have a stroke, the expansion adjustment cannot be performed, so that the use is limited greatly;
4) Aiming at the synchronous rotation mirror, namely the mirror which synchronously rotates around the vertical direction and the horizontal direction, if the gravity center of the mirror cannot be positioned on the axis of the motor, the formed moment of inertia is inconsistent, so that the offset exists in the synchronous rotation, and the welding quality of products is directly affected;
5. the internal parts cannot be subjected to heat dissipation (heat exchange), so that the optical thermal stability and the driving precision of the driver are insufficient.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing an improved self-contained cold and heat exchange runner type laser welding galvanometer system.
In order to solve the technical problems, the invention adopts the following technical scheme: the laser welding galvanometer system comprises a base with a laser input channel and a laser output channel, a dynamic focusing module and a corotation type reflector module, wherein the corotation type reflector module comprises a first turnover reflector unit and a second turnover reflector unit, the base is internally provided with a cold and hot exchange channel which is mutually communicated, the laser input channel and the laser output channel are mutually parallel and extend along the Z-axis direction, the laser welding galvanometer system also comprises a reflector adjusting module which reflects an optical path along the Z-axis direction to form an optical path along the Y-axis direction and directs the optical path along the Y-axis direction to the first turnover reflector unit, the vertical distance from the inlet of the base of the laser input channel to the center of a reflector of the reflector adjusting module is H, and the center of the reflector adjusting module to the first turnover reflector unit is perpendicular to L, wherein H is more than or equal to 2.5L; on the Z axis, the center of the laser input channel, the center of the focusing lens of the dynamic focusing module and the center of the reflector adjusting module are overlapped; the first turning mirror unit and the second turning mirror unit turn synchronously and at the same speed, and the centers of the mirrors of the first turning mirror unit and the mirror adjustment module are aligned on the Y axis, and the distance is kept unchanged; and keeping mirror centers of the first and second flip-mirror units aligned on the X-axis and the distance kept unchanged.
Preferably, the first turning mirror unit comprises a first power part, a first turning mirror and a first turning mirror, wherein the driving shaft extends along the Z-axis direction, the first power part is fixedly connected with the driving shaft through a first clamping seat, the first turning mirror is symmetrically arranged relative to the axis of the driving shaft, an upper trapezoid part, a rectangular part and a lower trapezoid part are formed from top to bottom, the structure is mainly convenient for the lenses and the lens seat clamp to adopt a trimming and chamfering design, so that the mass center is on the motor axis, the mass center moves synchronously with the motor at the same speed, and the rotational inertia is guaranteed to be consistent, thereby improving the stability of axial movement along the X-axis in laser welding. In some embodiments, the length of the upper trapezoid part from top to bottom gradually increases, the rectangular part vertically extends from the lower end of the upper trapezoid part towards each other, the length of the lower trapezoid part gradually decreases from the lower end of the rectangular part from top to bottom, the structure is limited, further clamping and positioning in the vertical direction are facilitated, and the reciprocating overturning around the Z axis direction is facilitated, and when the first overturning mirror reciprocally overturns, the distance between the reflecting mirror surface of the first overturning mirror and the mirror surface center of the reflecting mirror adjusting module is kept unchanged, so that the light path formed from the first overturning mirror unit to the second overturning mirror unit is very stable and concentrated, and the welding quality is facilitated to be improved. Also, in some embodiments, the height of the upper trapezoid is greater than the height of the lower trapezoid; the length change rate of the upper trapezoid part is greater than that of the lower trapezoid part. The height of the upper trapezoid part is larger than that of the lower trapezoid part, and the length change rate of the upper trapezoid part is larger than that of the lower trapezoid part. The structure is limited, the vertical clamping and positioning are further convenient, the reciprocating overturning around the Z-axis direction is facilitated, in addition, when the first overturning mirror is in reciprocating overturning, the distance between the reflecting mirror surface of the first overturning mirror and the mirror surface center of the reflecting mirror adjusting module is kept unchanged, so that an optical path formed from the first overturning mirror unit to the second overturning mirror unit is very stable and concentrated, and the welding quality is improved.
According to a specific implementation and preferred aspect of the present invention, the inner side surface of the first turning mirror is a plane reflecting mirror surface and faces the reflecting mirror of the reflecting mirror adjusting module; and/or, the first clamping seat comprises a first seat body coaxially connected with the driving shaft, and a first clamping plate and a second clamping plate which are downwards arranged from the lower part of the first seat body and are in clamping areas, wherein the first turnover mirror is inserted into the clamping areas from the upper end of the upper trapezoid part, the first clamping plate and the second clamping plate are respectively clamped at the inner side and the outer side of the upper trapezoid part, and the lower end part of the second clamping plate is positioned at the outer side and is positioned below the lower end part of the first clamping plate. Here, the assembly of the lens is very convenient.
According to still another specific implementation and preferred aspect of the present invention, the outer side surface of the first turning mirror includes a back surface located at the middle part, a left folded surface and a right folded surface which are folded inwards from left and right sides of the back surface and extend to left and right edges, wherein the left folded surface and the right folded surface are symmetrically arranged about a Z-axis center line of the back surface, and the formed folded edges sequentially pass through the upper trapezoid part, the rectangular part and the lower trapezoid part from top to bottom; and/or, the angle formed by the left folding surface and the right folding surface and the reflecting mirror surface is an acute angle; and/or the edge thickness of the left and right end parts corresponding to the left folding surface and the right folding surface is 1/6-1/3 of the thickness of the first turning mirror. Under this structural design, be favorable to rotation control more, promote stability by a wide margin, and then ensure moment of inertia's unanimity. Preferably, the angle formed by the left folding surface and the right folding surface and the reflecting mirror surface is an acute angle, preferably, the angle is 10 degrees to 30 degrees, wherein 18 degrees to 25 degrees are optimal, meanwhile, the thickness of the edges of the left end part and the right end part corresponding to the left folding surface and the right folding surface is 1/6 to 1/3 of the thickness of the first turning mirror, and the thickness of the edges is about 1/5 of the thickness of the first turning mirror in general.
According to still another specific implementation and preferred aspect of the present invention, the second turning mirror unit includes a second power member having a turning shaft extending along a Y-axis direction, and a second turning mirror fixedly connected to the turning shaft through a second clamping seat, wherein a reflecting mirror surface of the second turning mirror faces a reflecting mirror surface of the first turning mirror, and the reflecting mirror surfaces of the second turning mirror and the first turning mirror are disposed in an intersecting manner, and a distance between centers of the reflecting mirror surfaces of the first turning mirror and the second turning mirror is kept unchanged on an X-axis when the first turning mirror and the second turning mirror are turned synchronously and at the same speed. The relative positions of the first and second tilting mirrors are further defined, and the adjustment in the X-axis direction is possible depending on the size of the welding region formed.
In some embodiments, in some embodiments of the present invention, the reflecting mirror surface of the second tilting mirror is a plane, and includes a uniform thickness portion having equal thickness of the lens and extending along the Y-axis direction, an upper folded portion having an upward thickness gradually thinned from an upper portion of the uniform thickness portion, and a lower folded portion having a downward thickness gradually thinned from a lower portion of the uniform thickness portion, wherein the upper folded portion and the lower folded portion are symmetrically disposed about the Y-axis direction, and the second clamping seat is clamped at one end of the uniform thickness portion. And the second tilting mirror is convenient to process and install.
In some implementations of the present invention, upper and lower edges of the back surface of the equal thickness portion are respectively inclined inward, and the formed inclined surface is arranged flush with the inclined surface formed by the upper folded portion and the lower folded portion; and/or the edge thickness of the upper and lower ends of the upper and lower folded parts is 1/6-1/3 of the thickness of the equal thickness part. The two ends of the upper folding part and the lower folding part are respectively inclined inwards, wherein the inclined angle formed by the end part close to the second clamping seat is larger than the inclined angle formed by the end part far away from the second clamping seat. Under the structural modeling, the formed effective reflecting surface is optimal, and the formed moment of inertia is consistent with the moment of inertia formed by the output of the motor, so that the stability of axial movement along the Y axis in laser welding is improved.
According to still another specific implementation and preferred aspect of the present invention, the dynamic focusing module comprises a focusing seat, a lens seat slidably mounted on the focusing seat through a linear sliding rail, a focusing lens with an axis parallel to the sliding direction of the lens seat and mounted on the lens seat, and a driver for driving the lens seat to reciprocate, wherein the center of the focusing lens is aligned with the center of the lens seat, and a connecting line of the centers of the focusing lens and the lens seat is parallel to an X axis; the driver comprises a driving motor and a transmission rod piece, wherein the driving motor is arranged on the focusing seat and extends along the Y-axis direction, the transmission rod piece is used for connecting an output shaft of the driving motor with the lens seat in a transmission mode, and the transmission rod piece converts the circular motion of the output shaft into linear motion so as to drive the lens seat to slide up and down in a reciprocating mode along the length direction of the linear sliding rail. The lens can reciprocate at high speed stably, the centers of the focusing lens and the lens seat are aligned, and the connecting line of the centers of the focusing lens and the lens seat is parallel to the X axis, so that the lens moves stably, the movement inertia outside the axial direction of the focusing lens is effectively controlled to keep the optical axis concentric, and the focusing precision is improved.
Specifically, the lifting adjusting part comprises an adjusting screw rod extending along the Z-axis direction, a driving piece for driving the adjusting screw rod to rotate and an adjusting base which is matched with the adjusting screw rod and is relatively fixed with the focusing seat, wherein the adjusting screw rod and the adjusting base form an adjusting screw rod module. Here, through the up-and-down motion of focusing seat to increase the focus stroke of focusing lens, promote the practicality.
In addition, the reflector adjusting module comprises an adjusting die holder and a plane reflector which is arranged on the adjusting die holder and can adjust the inclination angle around the X axis, wherein the Y axis and the Z axis of the adjusting die holder are respectively provided with an optical path channel, and the plane reflector is obliquely arranged in a coordinate system formed by the Y axis and the Z axis. Thus, by fine tuning the plane mirror to perform the light path steering from the vertical to the horizontal direction, the inclination angle is typically about 45 °.
Preferably, the optical path channels formed by the adjusting die holder on the Y axis are two, one of which faces the reflecting mirror of the first turning reflecting mirror unit, and the other of which forms the viewing mirror window through the right angle joint. Here, by external sight glass window, can connect remote monitoring device, can long-range real-time supervision operating condition.
Further, an optical lens close to the plane mirror is arranged between the plane mirror and the focusing lens, wherein the focusing lens is a concave lens with upper and lower concave surfaces, the optical lens is a convex lens with upper and lower convex surfaces, and the focusing lens, the biconvex lens and the plane mirror are arranged in a coincident manner from top to bottom. Through each lens design of top-down, can effectively assemble the light beam for the light beam that the self-excited light output channel output is concentrated relatively and is welded, in order to improve welding efficiency and effect.
Due to the implementation of the technical scheme, compared with the prior art, the invention has the following advantages:
the structure of the existing dynamic focusing device can not make the turning mirror keep the optical axis concentric in the high-speed reciprocating motion and effectively control the deflection inertia generated by the axial motion of the lens, keep the laser incidence angle and the emission angle parallel to implement welding, ensure that the rotation inertia formed by the turning mirror and the driving piece is inconsistent, the motion formed by the laser on the X axis and the Y axis is unstable, and can not radiate heat (heat exchange) to internal parts, so that the defects of insufficient optical heat stability and driving precision of the driver exist, and the like. By adopting the system, the reflector of the reflector adjusting module can reflect the light path along the Z-axis direction to form the light path along the Y-axis direction to the reflector of the first turning reflector unit, then the reflector of the first turning reflector unit reflects the light beam to the reflector of the second turning reflector unit, finally the reflector of the second turning reflector unit reflects the light beam downwards so as to realize the parallelism of the input and output of laser, meanwhile, the movement coverage of a processing surface formed by the X-axis and the Y-axis is realized in the synchronous and same-speed turning of the first turning reflector unit and the second turning reflector unit, the stroke control of the thickness direction of the processing surface is completed in the up-down reciprocating movement of the focusing lens along the Z-axis direction, thus continuously completing the welding processing of products, the heat dissipation (heat exchange) is performed, so that, compared with the conventional structure, on the premise that the center of the first turning mirror is aligned with the center of the plane mirror and the distance is kept unchanged on the Y axis, and the center of the first turning mirror is aligned with the center of the second turning mirror and the distance is kept unchanged on the X axis, the moment of inertia of the focusing lens outside the axial direction is controlled to keep the optical axis concentric, the moment of inertia formed by the turning mirror and the driving member is also made consistent, the turning of the optical path is also made to be in parallel with the incident angle and the emergent angle of the laser light, the structure is miniaturized in the specific ratio of the height and the length, and the heat dissipation from the heat exchange flow channel with the heat dissipation device can be performed on the internal elements, the optical heat stability and the driving precision of the driver are improved.
Drawings
FIG. 1 is a schematic diagram of a laser welding galvanometer system based on X, Y, Z triaxial motion according to the present invention;
FIG. 2 is a partially exploded view of FIG. 1;
FIG. 3 is a schematic diagram of the dynamic focusing module in FIG. 1;
FIG. 4 is a schematic front view of FIG. 3;
FIG. 5 is a left side schematic view of FIG. 4;
FIG. 6 is a schematic diagram of the structure of the mirror module of FIG. 1;
FIG. 7 is a schematic front view of FIG. 6;
FIG. 8 is a left side schematic view of FIG. 7;
wherein: 1. a base; 10. a laser input channel; 11. a laser output channel;
2. a dynamic focusing module; 20. a focusing seat; 21. a linear slide rail; 22. a lens base; 23. a focusing lens; 24. a driver; 240. a drive motor; 241. a transmission rod; 25. a lifting adjusting part; 250. adjusting a screw rod; 251. a driving member; 252. adjusting the base;
3. a co-rotating mirror module; 31. a first flip mirror unit; 310. a first power member; q, driving shaft; 311. a first clamping seat; a1, a first seat body; a2, a first clamping plate; a3, a third clamping plate; 312. a first turning mirror; b1, an upper trapezoid part;
b2, rectangular part; b3, a lower trapezoid part; m1, the back; m2, left folding surface; m3, right folding surface; y, bending the edge; 32. a second flip mirror unit; 320. a second power member; f. a turnover shaft; 321. a second clamping seat; 322. a second turning mirror; d1, an equal thickness part; d2, an upward folding part; d3, a lower folding part;
4. a reflector adjustment module; 40. adjusting a die holder; 41. a planar mirror; 42. an optical lens;
5. QBH collimator; 6. a protective window; s, view mirror window.
Detailed Description
The present invention will be described in detail with reference to the drawings and the detailed description, so that the above objects, features and advantages of the present invention can be more clearly understood. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
As shown in fig. 1 to 8, the laser welding galvanometer system based on X, Y, Z triaxial movement according to the present embodiment includes a base 1, a dynamic focusing module 2, a co-rotating mirror module 3, and a mirror adjustment module 4, wherein a laser input channel 10 and a laser output channel 11 are respectively formed on the top and bottom of the base 1 and are parallel to each other, the dynamic focusing module 2 reciprocates along the Z axis direction, and the co-rotating mirror module 3 can eject the laser from the laser output channel 11 and form a coordinate system welding surface coverage formed by an X axis and a Y axis, so that 3D movement is formed in a three-dimensional coordinate system formed by X, Y, Z for welding, and at the same time, the 3D welding is performed in parallel by completing the injection and ejection of a light beam under the optical path adjustment of the mirror adjustment module 4.
In this example, the device seat 1 is a cuboid extending up and down, the dynamic focusing module 2 is disposed near the laser input channel 10, the reflector adjusting module 4 is installed below the dynamic focusing module 2 and located at the bottom of the left side, and the co-rotating reflector module 3 is located above the laser output channel 11.
As shown in fig. 1 to 5, the dynamic focusing module 2 includes a focusing seat 20, a lens seat 22 slidably mounted on the focusing seat 20 through a linear slide rail 21, a focusing lens 23 having an axis parallel to a sliding direction of the lens seat 22 and mounted on the lens seat 22, a driver 24 for driving the lens seat 22 to reciprocate, and a lifting adjusting member 25.
In this example, the linear slide rail 21 extends along the Z axis direction, the lens base 22 is slidably mounted on the linear slide rail 21, the focusing lens 23 is a concave lens with concave surfaces at the top and bottom, and the inner wall surface of the lens base 22 is attached to the circumferential part to complete horizontal positioning and mounting, wherein the center of the focusing lens 23 is aligned with the center of the lens base 22, and the central connecting line of the two is parallel to the X axis; the focusing lens 23 is a concave lens with upper and lower concave surfaces; the driver 24 comprises a driving motor 240 mounted on the focusing seat 20 and extending along the Y-axis direction, and a transmission rod piece 241 for connecting an output shaft of the driving motor 240 with the lens seat 22 in a transmission way, wherein the transmission rod piece 241 converts the circular motion of the output shaft into linear motion so as to drive the lens seat 22 to slide up and down in a reciprocating way along the length direction of the linear sliding rail 21; the elevation adjusting member 25 includes an adjusting screw 250 extending in the Z-axis direction, a driving member 251 driving the adjusting screw 250 to rotate, and an adjusting base 252 cooperating with the adjusting screw 250 and relatively fixed to the focusing base 20, wherein the adjusting screw 251 and the adjusting base 252 form an adjusting screw module.
As shown in fig. 1, 2 and 6 to 8, the co-rotating mirror module 3 includes a first flip mirror unit 31 and a second flip mirror unit 32, wherein the first flip mirror unit 31 and the second flip mirror unit 32 flip reciprocally around the Z-axis and the Y-axis directions, respectively, and reflect the laser light downward from the laser light output channel 11, while forming a processed welding surface in a motion coordinate system of the X-axis and the Y-axis to cover the product surface.
Specifically, the first tilting mirror unit 31 includes a first power member 310 extending along the Z-axis direction of the driving shaft q, and a first tilting mirror 312 fixedly connected to the driving shaft through a first clamping seat 311, where the first power member 310 is a common motor, and the first clamping seat 311 includes a first base a1 coaxially connected to the driving shaft q, and a first clamping plate a2 and a second clamping plate a3 downward from a lower portion of the first base a1 and presenting a clamping area; the first turning mirror 312 is symmetrically disposed about the axis of the driving shaft q, and the center of gravity of the first turning mirror 312 is located on the center line of the driving shaft q (or, the center line of the first turning mirror 312 coincides with the center line of the driving shaft q), in this example, the first turning mirror 312 includes an upper trapezoid b1, a rectangular portion b2, and a lower trapezoid b3 formed from top to bottom, where the length of the upper trapezoid b1 from top to bottom gradually increases, the rectangular portion b2 vertically extends from the lower end of the upper trapezoid b1 toward each other, and the length of the lower trapezoid b3 gradually decreases from the lower end of the rectangular portion b2 from top to bottom.
In this example, the inner side surface of the first turning mirror 312 is a planar mirror surface and faces the mirror of the mirror adjustment module 4, specifically, the first turning mirror 312 is inserted into the clamping area from the upper end of the upper trapezoid portion b1, the first clamping plate a2 and the second clamping plate a3 are respectively clamped at the inner side and the outer side of the upper trapezoid portion b1, and the lower end portion of the outer second clamping plate a3 is located below the lower end portion of the first clamping plate a 2. The outer side of the first turning mirror 312 includes a back surface m1 located in the middle, a left folded surface m2 and a right folded surface m3 that are folded inwards from the left and right sides of the back surface m1 and extend to the left and right edges, wherein the left folded surface m2 and the right folded surface m3 are symmetrically disposed about the Z-axis center line of the back surface m1, and the formed folded edge y sequentially passes through the upper trapezoid portion b1, the rectangular portion b2 and the lower trapezoid portion b3 from top to bottom, in this example, the angle formed by the left folded surface m2 and the right folded surface m3 and the reflecting mirror surface is an acute angle (18 ° -25 °), and meanwhile, the edge thicknesses of the left and right end portions corresponding to the left folded surface m2 and the right folded surface m3 are about 1/5 of the thickness of the first turning mirror.
The height of the upper trapezoid part b1 is greater than that of the lower trapezoid part b3, and the length change rate of the upper trapezoid part b1 is greater than that of the lower trapezoid part b 2. This structure defines, further makes things convenient for the centre gripping location of upper and lower direction, and is more favorable to overturning reciprocally around the Z axle direction, and moreover, when first tilting mirror 312 is reciprocal overturned, the distance of the mirror face of first tilting mirror 312 and the mirror face center of the mirror of mirror adjustment module 4 remains unchanged, makes the light path that forms from first tilting mirror unit 31 to second tilting mirror unit 32 very stable and concentrated, is favorable to promoting the welding quality.
The second turning mirror unit 32 includes a second power member 320 having a turning shaft extending along the Y-axis direction, and a second turning mirror 322 fixedly connected to the turning shaft f through a second clamping seat 321, where the center of gravity of the second turning mirror 322 is located on the center line of the turning shaft f (or, the center line of the second turning mirror 322 coincides with the center line of the turning shaft f), meanwhile, the mirror surface of the second turning mirror 322 faces the mirror surface of the first turning mirror 312, and the mirror surfaces of the two mirror surfaces are disposed in an intersecting arrangement, and when the first turning mirror 312 and the second turning mirror 322 are synchronous and turn at the same speed, the distance between the centers of the two mirror surfaces is kept unchanged on the X-axis.
In this example, the mirror surface of the second turning mirror 322 is a plane, and includes a uniform thickness portion d1 with equal thickness and extending along the Y-axis direction, an upper folded portion d2 with gradually thinner thickness from the upper portion of the uniform thickness portion d1, and a lower folded portion d3 with gradually thinner thickness from the lower portion of the uniform thickness portion d1, wherein the upper and lower edges of the back surface of the uniform thickness portion d1 are respectively inclined inwards, and the formed inclined surfaces are flush with the inclined surfaces formed by the upper folded portion d2 and the lower folded portion d3, and at the same time, the upper folded portion d2 and the lower folded portion d3 are symmetrically arranged about the Y-axis direction, the second clamping seat clamps the right end of the uniform thickness portion d1, and the edge thicknesses of the upper and lower end portions of the upper folded portion d2 and the lower folded portion d3 are about 1/5 of the thickness of the uniform thickness portion d 1. In this embodiment, the two ends of the folded-up portion d2 and the folded-down portion d3 are respectively inclined inwards, wherein the inclination angle formed by the end portion close to the second holder 321 is greater than the inclination angle formed by the end portion far from the second holder 321, and meanwhile, the second holder 321 and the first holder 311 have the same structure, which is not described in detail herein, but is clearly applicable.
The mirror adjustment module 4 reflects the optical path along the Z-axis direction to form an optical path along the Y-axis direction toward the first turning mirror unit. Specifically, the mirror adjusting module 4 includes an adjusting die holder 40, a plane mirror 41 mounted on the adjusting die holder 40 and capable of adjusting an inclination angle around an X axis, and an optical lens 42 disposed between the plane mirror 41 and the focusing lens 23 and close to the plane mirror 41, wherein optical paths are formed on a Y axis and a Z axis of the adjusting die holder 40, respectively, and the plane mirror 41 is obliquely disposed in a coordinate system formed by the Y axis and the Z axis.
In this example, two optical paths are formed in the Y-axis of the die holder 40, one of which faces the first turning mirror 312 of the first turning mirror unit 31, and the other of which forms the mirror window s by right angle connection. Meanwhile, in the Z-axis direction, the center of the laser input channel 10, the center of the focusing lens 23, and the center of the plane mirror 41 coincide; the optical lens 42 is a convex lens with convex surfaces at the top and bottom, and the focusing lens 23, the biconvex lens, and the plane mirror 41 are arranged in a center overlapping manner from top to bottom.
The center-to-center sag of the laser input channel 10 from the entrance of the holder 1 to the plane mirror 41 is H, and the center of the plane mirror 41 to the first turning mirror 312 is vertically L, where H is about 2.9 times of L. The angle formed by the plane mirror 41 and the horizontal plane is about 45 °, the angle between the planes formed by the first turning mirror 312 and the Y, Z axis is about 35 °, the angle between the planes formed by the second turning mirror 322 and the X, Y axis is about 27.5 °, and the first turning mirror 312 is turned back and forth between 45 ° and 55 ° around the Z axis, and the second turning mirror 322 is turned back and forth between 37.5 ° and 47.5 ° around the Y axis in the initial state.
In addition, the laser welding galvanometer system based on X, Y, Z triaxial movement further comprises a cold and heat exchange runner which is arranged inside the former base 1 and is communicated with each other, a QBH collimator 5 and a protection window 6 which are respectively communicated with the laser input channel 10 and the laser output channel 11, and the cold and heat exchange runner is mainly used for radiating (heat exchanging) an optical component, a driving component, a control chip and the like after cooling fluid flows in, so that the optical heat stability and the driving precision of the driver are improved; the QBH collimator 5 is a conventional standard component, and the light inlet is positioned at the top, and the protection window 6 mainly reduces potential safety hazards in the welding process.
In the system, the reflector of the reflector adjusting module can reflect the light path along the Z axis direction to form the light path along the Y axis direction to the reflector of the first turning reflector unit, then the reflector of the first turning reflector unit reflects the light beam to the reflector of the second turning reflector unit, and finally the reflector of the second turning reflector unit reflects the light beam downwards so as to realize the parallelism of the input and the output of the laser, and meanwhile, in the synchronous and same-speed turning of the first turning reflector unit and the second turning reflector unit, the movement coverage of a processing surface formed by the X axis and the Y axis is realized, and the stroke control of the thickness direction of the processing surface is finished in the up-down reciprocating motion of the focusing lens along the Z axis direction, so that the welding processing of a product is continuously finished. On the other hand, the center of the laser input channel, the center of the focusing lens and the center of the plane reflector are kept to coincide on the Z axis; keeping the center of the first turning mirror aligned with the center of the planar mirror on the Y axis and keeping the distance constant; on the premise that the center of the first turning mirror and the center of the second turning mirror are aligned on the X axis and the distance is kept unchanged, the laser incidence angle and the emission angle are effectively implemented to move in the parallel direction X, Y, Z axially so as to complete high-precision focusing and welding of the product; in the third aspect, through the design of the flow channel, effective heat dissipation of internal parts can be realized, the optical heat stability and the driving precision of the driver are improved, and the dynamic focusing precision is further improved; in the fourth aspect, the focusing stroke of the focusing lens is increased by the up-and-down movement of the focusing seat, so that the practicability is improved.
The present invention has been described in detail with the purpose of enabling those skilled in the art to understand the contents of the present invention and to implement the same, but not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a from taking cold and hot exchange runner formula laser welding mirror system that shakes, its includes ware seat, dynamic focus module, the mirror module that turns to with having laser input channel and laser output channel, the mirror module that turns to includes first upset mirror unit and second upset mirror unit, its characterized in that with turning to the mirror module: the laser welding galvanometer system also comprises a reflector adjusting module which reflects an optical path along the Z-axis direction to form an optical path along the Y-axis direction to be shot to the first turnover reflector unit, the center vertical distance from an inlet of the laser input channel to a reflector of the reflector adjusting module is H, and the center of the reflector adjusting module to the center of the first turnover reflector unit is vertical to L, wherein H is more than or equal to 2.5L; on the Z axis, the center of the laser input channel, the center of the focusing lens of the dynamic focusing module and the center of the reflector adjusting module are overlapped; the first turning mirror unit and the second turning mirror unit turn synchronously and at the same speed, and the centers of the mirrors of the first turning mirror unit and the mirror adjustment module are aligned on the Y axis, and the distance is kept unchanged; and keeping mirror centers of the first and second flip-mirror units aligned on the X-axis and the distance kept unchanged.
2. The self-contained cold and hot exchange runner laser welding galvanometer system of claim 1, wherein: the first turning mirror unit comprises a first power piece, a first turning mirror and a first turning mirror, wherein the driving shaft extends along the Z-axis direction, the first turning mirror is fixedly connected with the driving shaft through a first clamping seat, the first turning mirror is symmetrically arranged about the axial lead of the driving shaft, and an upper trapezoid part, a rectangular part and a lower trapezoid part are formed from top to bottom; and/or the height of the upper trapezoid part is greater than the height of the lower trapezoid part; and/or the length change rate of the upper trapezoid part is greater than the length change rate of the lower trapezoid part.
3. The self-contained cold and hot exchange runner laser welding galvanometer system of claim 2, wherein: the inner side surface of the first turnover mirror is a plane reflecting mirror surface and faces to the reflecting mirror of the reflecting mirror adjusting module; and/or, the first clamping seat comprises a first seat body coaxially connected with the driving shaft, and a first clamping plate and a second clamping plate which are downwards arranged from the lower part of the first seat body and are in clamping areas, wherein the first turnover mirror is inserted into the clamping areas from the upper end of the upper trapezoid part, the first clamping plate and the second clamping plate are respectively clamped at the inner side and the outer side of the upper trapezoid part, and the lower end part of the second clamping plate is positioned at the outer side and is positioned below the lower end part of the first clamping plate.
4. A self-contained cold and hot exchange runner laser welding galvanometer system as claimed in claim 2 or 3, wherein: the outer side surface of the first turning mirror comprises a back surface positioned in the middle part, a left folding surface and a right folding surface which are inwards folded from the left side and the right side of the back surface and extend to the left edge and the right edge, wherein the left folding surface and the right folding surface are symmetrically arranged about the Z-axis central line of the back surface, and the formed folding edges sequentially pass through the upper trapezoid part, the rectangular part and the lower trapezoid part from top to bottom; and/or, the angle formed by the left folding surface and the right folding surface and the reflecting mirror surface is an acute angle; and/or the edge thickness of the left and right end parts corresponding to the left folding surface and the right folding surface is 1/6-1/3 of the thickness of the first turning mirror.
5. The self-contained cold and hot exchange runner laser welding galvanometer system of claim 1, wherein: the second turnover mirror unit comprises a second power piece, a second turnover mirror and a second turnover mirror, wherein the turnover shaft extends along the Y-axis direction, the second power piece is fixedly connected with the turnover shaft through a second clamping seat, the reflection mirror face of the second turnover mirror faces the reflection mirror face of the first turnover mirror, the reflection mirror faces of the second turnover mirror and the first turnover mirror are arranged in an intersecting mode, and when the first turnover mirror and the second turnover mirror are synchronous and turn over at the same speed, the distance between the centers of the first turnover mirror and the second turnover mirror is kept unchanged on the X-axis.
6. The self-contained cold and heat exchange flow path laser welding galvanometer system of claim 5, wherein: the mirror surface of the second turning mirror is a plane and comprises an equal-thickness part, an upper folded part and a lower folded part, wherein the equal-thickness part is equal in lens thickness and extends along the Y-axis direction, the upper folded part is upwards arranged from the upper part of the equal-thickness part and is gradually thinned, the lower folded part is downwards arranged from the lower part of the equal-thickness part and is gradually thinned, the upper folded part and the lower folded part are symmetrically arranged about the Y-axis direction, the second clamping seat is clamped at one end of the equal-thickness part, and/or the upper edge and the lower edge of the back surface of the equal-thickness part are respectively inclined inwards, and the formed inclined surface is flush with the inclined surface formed by the upper folded part and the lower folded part; and/or the edge thickness of the upper and lower end parts of the upper and lower folded parts is 1/6-1/3 of the thickness of the equal thickness part; and/or, the two ends of the upper folding part and the lower folding part are respectively inclined inwards, wherein the inclined angle formed by the end part close to the second clamping seat is larger than the inclined angle formed by the end part far away from the second clamping seat.
7. The self-contained cold and hot exchange runner laser welding galvanometer system of claim 1, wherein: the dynamic focusing module comprises a focusing seat, a lens seat, a focusing lens and a driver, wherein the lens seat is slidably arranged on the focusing seat through a linear sliding rail, the axis of the lens seat is parallel to the sliding direction of the lens seat, the focusing lens is arranged on the lens seat, the driver drives the lens seat to reciprocate, the center of the focusing lens is aligned with the center of the lens seat, and a connecting line of the centers of the focusing lens and the lens seat is parallel to an X axis.
8. The self-contained cold and heat exchange flow path laser welding galvanometer system of claim 7, wherein: the driver comprises a driving motor and a transmission rod piece, wherein the driving motor is arranged on the focusing seat and extends along the Y-axis direction, and the transmission rod piece is used for connecting an output shaft of the driving motor with the lens seat in a transmission way, and the transmission rod piece converts the circular motion of the output shaft into linear motion so as to drive the lens seat to slide up and down in a reciprocating way along the length direction of the linear sliding rail; and/or; the laser welding galvanometer system also comprises a lifting adjusting component which is arranged in the device seat and can vertically adjust the focusing seat to lift along the Z-axis direction.
9. The self-contained cold and hot exchange runner laser welding galvanometer system of claim 1, wherein: the reflector adjusting module comprises an adjusting die holder and a plane reflector which is arranged on the adjusting die holder and can adjust the inclination angle around the X axis, wherein the Y axis and the Z axis of the adjusting die holder are respectively provided with a light path channel, and the plane reflector is obliquely arranged in a coordinate system formed by the Y axis and the Z axis.
10. The self-contained cold and hot exchange runner laser welding galvanometer system of claim 9, wherein: two optical path channels are formed on the Y axis of the adjusting die holder, one of the optical path channels faces the reflecting mirror of the first turning reflecting mirror unit, and the other optical path channels form a sight glass window through a right-angle joint; and/or an optical lens close to the plane reflector is arranged between the plane reflector and the focusing lens, wherein the focusing lens is a concave lens with upper and lower concave surfaces, the optical lens is a convex lens with upper and lower convex surfaces, and the centers of the focusing lens, the convex lens and the plane reflector are overlapped from top to bottom.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310629561.7A CN116460424A (en) | 2023-03-20 | 2023-03-20 | Laser welding galvanometer system with cold and heat exchange flow channel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310265873.4A CN115971649B (en) | 2023-03-20 | 2023-03-20 | Laser welding galvanometer system based on X, Y, Z triaxial movement |
| CN202310629561.7A CN116460424A (en) | 2023-03-20 | 2023-03-20 | Laser welding galvanometer system with cold and heat exchange flow channel |
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| CN202310265873.4A Division CN115971649B (en) | 2023-03-20 | 2023-03-20 | Laser welding galvanometer system based on X, Y, Z triaxial movement |
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| CN202310628423.7A Active CN116423040B (en) | 2023-03-20 | 2023-03-20 | Laser welding galvanometer system |
| CN202310265873.4A Active CN115971649B (en) | 2023-03-20 | 2023-03-20 | Laser welding galvanometer system based on X, Y, Z triaxial movement |
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| CN202310265873.4A Active CN115971649B (en) | 2023-03-20 | 2023-03-20 | Laser welding galvanometer system based on X, Y, Z triaxial movement |
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| CN117428336A (en) * | 2023-12-22 | 2024-01-23 | 苏州思萃熔接技术研究所有限公司 | Laser welding vibration lens and laser welding equipment |
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| CN116519032B (en) * | 2023-04-28 | 2024-02-20 | 广东顺德西安交通大学研究院 | Visual inspection equipment of double mirror reflection |
| CN116900475A (en) * | 2023-06-26 | 2023-10-20 | 苏州菲镭泰克激光技术有限公司 | Multi-beam partition dynamic allocation unit |
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2023
- 2023-03-20 CN CN202310629561.7A patent/CN116460424A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117428336A (en) * | 2023-12-22 | 2024-01-23 | 苏州思萃熔接技术研究所有限公司 | Laser welding vibration lens and laser welding equipment |
| CN117428336B (en) * | 2023-12-22 | 2024-02-13 | 苏州思萃熔接技术研究所有限公司 | Laser welding vibration lens and laser welding equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115971649A (en) | 2023-04-18 |
| CN116423040A (en) | 2023-07-14 |
| CN115971649B (en) | 2023-06-13 |
| CN116423040B (en) | 2023-11-28 |
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