CN215316381U - Laser assembly rotation driving device - Google Patents

Abstract

The utility model discloses a laser assembly rotation driving device, which comprises a reference seat and a fixed seat, wherein the reference seat is rotationally connected with the fixed seat, and the reference seat is connected with an emitting head for emitting laser; the reference seat is connected with a driving motor through a connecting piece, and the driving motor drives the reference seat to rotate relative to the fixed seat so as to realize the rotation of the emergent head; a focusing mirror is arranged in the emergent head, the focusing mirror and the emergent head are always kept in a relatively fixed position, and a reflector group for guiding laser to be always incident to the focusing mirror is arranged on the reference seat and the fixed seat; the ejection head is provided with a vertex extending downwards, and a through hole for ejecting laser is arranged at the vertex; the utility model sets the emitting head downwards, so that the emitting head can emit laser to the lower cambered glass, and meanwhile, the emitting head is arranged on a reference seat, and the driving motor can drive the reference seat to rotate around the fixed seat, so that the emitting head deflects; and the focusing mirror is configured to be fixed relative to the exit head so that the laser focusing is not affected.

Description

Laser assembly rotation driving device

Technical Field

The utility model relates to the technical field of three-dimensional cambered surface glass cutting, in particular to a laser assembly rotation driving device.

Background

In the prior art, the processing of cambered surface glass such as automobile rearview mirrors and the like is completed in a mechanical processing mode, and the general process is as follows: taking a square curved glass as an original sheet, installing a glass cutter on an automatic cutting machine, scribing and cutting according to preset size parameters, cutting out the shape of the rearview mirror, breaking off the redundant part, chamfering and edging the rearview mirror through an edging machine, and cleaning to obtain a finished product.

The processing technology has the following problems: the efficiency is low, multiple processes are required, the cleaning is not environment-friendly enough, and when mechanical cutting is carried out, the actual cutting effect size and the input preset cutting parameters have large deviation, but the requirement on the overall dimension of the lens is high, so that the requirement cannot be met, and a plurality of inferior-quality products are caused; if the pass-stop gauge mode is used for detecting whether the size of the lens is in compliance, the product quality is unstable, and the stop gauge is made of stainless steel materials and has higher hardness than glass, so that the collision can be generated, bad products are generated, and waste is caused; if high finished product rate is required, the requirements on the technology and experience of workers are strict, and the existing conditions are difficult to meet.

The application number is '201810369320.2', and the device and the method for rapidly and accurately cutting the three-dimensional cambered glass by laser provide a contact type processing device for the three-dimensional cambered glass, wherein the device and the method are attached to a cutting cambered surface by a laser head, and the laser head moves along a cutting path to finish the cambered surface cutting. However, the machining method still has the problem that the service life of the laser head is too low due to the fact that the laser head always contacts with the cambered surface to generate friction in the cutting process.

Therefore, a non-contact cutting device is specially designed, and because the cambered glass is similar to an oval, the laser head is required to be capable of rotating during the working process so as to meet the requirements of cutting processing.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a laser component rotation driving device which can drive a laser head to rotate so as to complete the cutting of a cambered glass path.

The technical scheme adopted by the utility model is as follows:

a laser assembly rotation drive apparatus comprising: the laser beam laser device comprises a reference seat and a fixed seat, wherein the reference seat is rotatably connected with the fixed seat, and the reference seat is connected with an emitting head for emitting laser; the reference seat is connected with a driving motor through a connecting piece, and the driving motor drives the reference seat to rotate relative to the fixed seat so as to realize the rotation of the emergent head; a focusing mirror is arranged in the emergent head, the focusing mirror and the emergent head are always kept in a relatively fixed position, and a reflector group for guiding laser to be always incident to the focusing mirror is arranged on the reference seat and the fixed seat; the emitting head is provided with a vertex which extends downwards and is always spaced from the surface of the three-dimensional cambered surface glass, and a through hole for emitting laser is arranged at the vertex.

In a further scheme, the device also comprises a longitudinal moving module connected with the ejection head and the focusing lens, and the longitudinal moving module is used for driving the ejection head and the focusing lens to move along the Z-axis direction according to a preset path, so that the focusing lens receives laser and focuses the laser inside and outside the whole thickness of the three-dimensional arc-shaped glass all the time, and the fixing seat is arranged on the longitudinal moving module; the transverse moving module is connected with the longitudinal moving module and is used for driving the ejection head to transversely move along the Y-axis direction according to a preset path; when the transverse moving module and the longitudinal moving module act on the emitting head to drive the emitting head to move, the driving motor drives the emitting head to swing left and right, so that laser beams emitted by the emitting head are always incident to the surface of the three-dimensional cambered surface glass along the normal direction.

In a further scheme, the device also comprises a reflector group, wherein the reflector group comprises a first reflector and a second reflector; the first reflector is arranged in the fixed seat and used for receiving laser emitted by the laser and reflecting the laser; the second reflector is arranged in the reference seat and used for receiving the laser reflected by the first reflector and reflecting the laser to the focusing mirror in the emergent head.

In a further scheme, the transverse moving module is arranged on a bracket, a connecting plate is movably arranged on the transverse moving module along the Y-axis direction, and the longitudinal moving module is arranged on the connecting plate; a dust cover is arranged on the transverse moving module; the dust cover can cover the vacant guide rail on the lateral shifting module always, improves dustproof effect.

Advantageous effects

The utility model sets the emitting head downwards, so that the emitting head can emit laser to the lower cambered glass, and meanwhile, the emitting head is arranged on a reference seat, and the driving motor can drive the reference seat to rotate around the fixed seat, so that the emitting head can deflect; and the focusing mirror is configured to be fixed relative to the exit head so that the laser focusing is not affected.

Furthermore, the reference seat and the fixed seat can be transversely or longitudinally translated, so that when the glass is processed at different positions, the ejection head can be ensured to move to the corresponding position, and meanwhile, the laser focus is always focused on the glass by matching with an equation.

Drawings

FIG. 1 is a front view of a non-contact cambered surface glass cutting apparatus;

FIG. 2 is a side view of a non-contact cambered surface glass cutting apparatus;

FIG. 3 is an isometric view of a non-contact curved glass cutting apparatus;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is a front view of an exit assembly consisting of the exit head, the focusing lens, the reference seat and the fixing seat;

FIG. 6 is a cross-sectional view of FIG. 5B-B;

FIG. 7 is a schematic structural view of the placement platform;

FIG. 8 is a schematic diagram of deriving the rotation angle of the exit head;

FIG. 9 is a schematic view of the rotation angle of the initial point of the derivation nozzle not directly above the center of the three-dimensional arc glass;

fig. 10 is a schematic diagram of the tray swinging longitudinally so that the three-dimensional cambered glass on the corresponding processing station is perpendicular to the laser beam emitted by the emitting head.

The reference numerals in the schematic drawings illustrate:

1-a workbench, 2-a moving positioning mechanism, 21-a first linear guide rail, 22-a first sliding table, 3-a placing platform, 31-a tray, 32-a supporting seat, 33-an air hole, 34-a pneumatic component, 4-a rotating mechanism, 5-a bracket, 6-a high-speed laser component, 61-an emergent head, 62-a reference seat, 63-a fixed seat, 64-a focusing lens, 65-a first reflecting mirror, 66-a second reflecting mirror, 67-a driving motor, 68-a longitudinal moving module, a third linear guide rail 681, a third sliding table 682, 69-a transverse moving module, 691-a second linear guide rail, 692-a second sliding table, 610-a connecting plate, 611-a dust cover and 7-three-dimensional cambered glass.

Detailed Description

For a further understanding of the utility model, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The laser assembly rotation driving device of the present embodiment is an important component of the non-contact arc glass cutting device, and the following is a detailed description of the whole device: referring to fig. 1-9, the present embodiment provides a non-contact arc glass cutting apparatus, which includes a worktable 1, and the worktable 1 is provided with a mobile positioning mechanism 2, a placing platform 3 and a rotating mechanism 4. In the scheme, the placing platform 3 is arranged on the mobile positioning mechanism 2 and moves to a specified processing position along the X-axis direction under the action of the mobile positioning mechanism 2. The rotating mechanism 4 is connected with the placing platform 3, and when the mobile positioning mechanism 2 drives the placing platform 3 to a specified processing position, the rotating mechanism 4 drives the three-dimensional cambered glass 7 on the placing platform 3 to rotate.

Specifically, the mobile positioning mechanism 2 includes a first linear module, and the first linear module includes a first linear guide rail 21 and a first sliding table 22 capable of sliding on the first linear guide rail 21. Put platform 3 and set up on first slip table 22, put platform 3 through first slip table 22 drive and slide on first linear guide 21, realize putting platform 3 in the feeding of X axle direction.

As shown in fig. 7, the placing platform 3 includes a tray 31 and a supporting seat 32 for supporting the tray 31, the rotating mechanism 4 includes a rotating platform and a driver for driving the rotating platform to rotate, the rotating platform is disposed on the supporting seat 32, and the tray 31 is disposed on a rotating station of the rotating platform. In this scheme, drive rotary platform pivoted driver is the rotating electrical machines, is connected through the rotor plate that rotating electrical machines and the last rotation station of rotary platform correspond to it is rotatory to drive the rotor plate. When the placing platform 3 moves to the appointed processing position, the rotating platform drives the three-dimensional cambered surface glass 7 to rotate.

And in order to prevent the three-dimensional cambered glass 7 from being separated from the tray 31 in the rotating process. The tray 31 is provided with a plurality of air holes 33, the air holes 33 are connected with a pneumatic assembly 34 for enabling the air holes 33 to form negative pressure through an air channel pipeline, and the negative pressure is formed at the air holes 33 to form vacuum adsorption on the three-dimensional cambered glass 7 on the tray 31.

Meanwhile, a support 5 is further arranged on the workbench 1, a high-speed laser assembly 6 is arranged on the support 5, and the high-speed laser assembly 6 is located above the placing platform 3. The high-speed laser assembly 6 includes an emission head 61, a focusing mirror 64, a reference base 62, a fixed base 63, a transverse moving module 69, and a longitudinal moving module 68. The emitting head 61 and the focusing mirror 64 are relatively fixed, and the transverse moving module 69 is connected with the emitting head 61 and the focusing mirror 64 and used for driving the emitting head 61 to transversely move along the Y-axis direction according to a preset path. The longitudinal moving module 68 is connected to the emitting head 61 and the focusing mirror 64, and is configured to drive the emitting head 61 and the focusing mirror 64 to move along the Z-axis direction according to a predetermined path, so that the focusing mirror 64 receives the laser and focuses the laser inside and outside the entire thickness of the three-dimensional arc glass 7.

The transverse moving module 69 includes a second linear guide rail 691 and a second sliding table 692 slidable on the second linear guide rail 691. The second guide rail is disposed on the bracket 5, and the second slide table 692 is provided with a connection plate 610. The longitudinal moving module 68 includes a third linear guide 681 and a third sliding table 682 capable of sliding on the third linear guide 681, and the third linear guide 681 is disposed on the connecting plate 610.

The fixing base 63 is disposed on the third sliding table 682. The reference seat 62 is rotatably connected to the fixed seat 63, specifically, referring to fig. 5 and 6, a rotating platform is disposed on the fixed seat 63, the rotating platform includes a rotating plate and a driving motor 67 for driving the rotating plate to rotate, the reference seat 62 is disposed on the rotating plate of the rotating platform, and the emitting head 61 is connected to the reference seat 62. The driving motor 67 drives the rotating plate to rotate according to the derivative equation of the rotation angle of the injection head 61, and further drives the reference seat 62 to rotate relative to the fixed seat 63. When the reference seat 62 rotates, the emitting head 61 is driven to rotate, so that the laser beam emitted by the emitting head 61 always enters the surface of the three-dimensional cambered glass 7 along the normal direction.

The driving motor 67 drives the emitting head 61 to rotate, and the rotating angle is derived according to the displacement of the emitting head 61, so that the laser beam emitted by the emitting head 61 can be ensured to be always incident to the surface of the three-dimensional cambered glass 7 along the normal direction. However, if the tray 31 is longitudinally swung to make the three-dimensional arc glass 7 on the corresponding processing station perpendicular to the laser beam emitted by the emitting head 61, and the emitting head 61 does not swing to cut along the line, as shown in fig. 10, the laser beam emitted by the three-dimensional arc glass 7 and the emitting head 61 in the processing method is only nearly perpendicular, and still has a certain angle deviation, and is only suitable for cutting thin glass. However, in the scheme, the driving motor 67 drives the emitting head 61 to rotate, so that the laser beam emitted by the emitting head 61 can be ensured to be always incident to the surface of the three-dimensional cambered glass 7 along the normal direction, the cutting precision is high, and the cutting device is suitable for cutting thicker cambered glass.

And because the tray 31 does not need to swing longitudinally, the scheme adopts the cutting mode of the rotation of the tray 31, and the three-dimensional cambered glass 7 does not need to be displaced in the X-axis direction in the cutting process, thereby improving the processing precision.

Referring to fig. 8 and 9 (the solid line is the laser emitted from the emitting head 61 and the emitting head 61 before displacement, and the dotted line is the laser emitted from the emitting head 61 and the emitting head 61 after displacement), in order to obtain the derivative equation of the rotation angle of the emitting head 61, before the emitting head 61 is not displaced to realize cutting, the position of the emitting head 61 is determined as the initial point; the expression of the derivation equation of the rotation angle and the derivation process thereof are as follows:

o is the center of the arc corresponding to the three-dimensional arc glass 7, OC is the laser emitted by the emitting head 61 before displacement, and OD is the laser emitted by the emitting head 61 after displacement. And respectively obtaining a point A and a point B according to the intersection points of OC and OD and the three-dimensional arc glass 7 to obtain a triangle OAB, wherein in order to obtain the value theta' of the angle AOB, the length of AB is obtained firstly, a perpendicular line of AO is made through the point B to obtain a triangle ABE and a triangle OBE, and the length of BE is the transverse displacement distance Y of the ejection head 61. The length of AB is the longitudinal displacement distance Z of the exit head 61.

OA and OB are known as the radius R of the arc corresponding to the three-dimensional arc glass 7, and the length of OE is known as R-Z. According to the trigonometric theorem, OB²＝OE²+BE²。

The derivative equation of the longitudinal displacement distance Z can be obtained as

Then, according to the trigonometric function theorem, the value X of AB is derived, namely X²＝Y²+Z²。

Then, according to the trigonometric function theorem, obtain

Then, according to the inverse trigonometric function theorem, obtaining

Finally, a parallel line DF of the OC is made, and the angle ODF is the rotation angle θ of the ejection head 61. Because of DF// OC, θ ═ θ', we can obtain

As shown in fig. 9, the position of the laser emitted from the emitting head 61 when cutting is started is not necessarily at the center of the arc glass, but the calculation formula is the same regardless of the position of the starting point of the emitting head 61.

As a description again, θ is the angle of rotation of the exit head 61; θ' is an included angle between the laser beam emitted from the emitting head 61 at the initial point and the laser beam emitted from the emitting head 61 after rotation; z is the longitudinal displacement distance of the exit head 61; r is the radius of the arc corresponding to the three-dimensional cambered surface glass 7 substrate; y is the lateral displacement distance of the exit head 61.

Moreover, since the emitting head 61 rotates constantly during the displacement process, and the focusing mirror 64 is disposed on the emitting head 61 and rotates along with the emitting head 61, in order to avoid that the laser cannot enter the focusing mirror 64 and cannot be focused on the surface of the three-dimensional arc glass 7, the reference seat 62 and the fixed seat 63 are provided with a mirror group for guiding the laser to always enter the focusing mirror 64. The reflector set comprises a first reflector 65 and a second reflector 66, the first reflector 65 is disposed in the fixing base 63 for receiving the laser emitted by the laser and reflecting the laser, and the second reflector 66 is disposed in the reference base 62 for receiving the laser reflected by the first reflector 65 and reflecting the laser to the focusing mirror 64 in the emitting head 61.

When the three-dimensional cambered glass 7 is placed on the tray 31, the first sliding table 22 drives the placing platform 3 to slide on the first linear guide rail 21 to a specified processing position. Then the pneumatic component 34 forms negative pressure at the air hole 33 to adsorb the three-dimensional cambered glass 7. The rotating platform drives the three-dimensional cambered glass 7 on the tray 31 to rotate. Meanwhile, the emitting head 61 is matched with the transverse moving module 69 and the longitudinal moving module 68 to move along a preset path, and the driving motor 67 drives the emitting head 61 to swing so that the laser beam emitted by the emitting head 61 is always incident to the surface of the three-dimensional cambered glass 7 along the normal direction. And after the ejection head 61 finishes moving along the preset path, finishing cutting the three-dimensional cambered glass 7.

As a preferred embodiment, the number of the first sliding tables 22 is two, and the two first sliding tables 22 sequentially reciprocate between the designated processing position and the feeding point of the three-dimensional arc glass 7 on the first linear guide rail 21, wherein when one first sliding table 22 is located at the designated processing position, the other first sliding table 22 is located at the feeding point of the three-dimensional arc glass 7. Through the double-station simultaneous warp cutting and feeding, the working efficiency is improved.

In addition, dust covers 611 are arranged at the head end and the tail end of the second sliding table 692, and the dust covers 611 are arranged along the length direction of the second linear guide rail 691. One end of the dust cover 611 is connected to the second slide table 692, and the other end of the dust cover 611 is connected to the second linear guide rail 691. When the second slide table 692 slides, the dust cover 611 on one side in the traveling direction of the second slide table 692 is folded, and the dust cover 611 on the other side of the second slide table 692 is stretched. Prevent through dust cover 611 that the lateral shifting module 69 advances grey, avoid the dust to produce the friction with second slip table 692 in the lateral shifting module 69 removal process and lead to the lateral shifting module 69 to burn out. And the second sliding table 692 drives the dust cover 611 to compress and stretch, so that the dust cover 611 can always cover the vacant guide rail on the transverse moving module 69, and the dust prevention effect is improved.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the utility model, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the utility model.

Claims (4)

1. A laser module rotation driving device, comprising: the laser beam laser device comprises a reference seat and a fixed seat, wherein the reference seat is rotatably connected with the fixed seat, and the reference seat is connected with an emitting head for emitting laser; the reference seat is connected with a driving motor through a connecting piece, and the driving motor drives the reference seat to rotate relative to the fixed seat so as to realize the rotation of the emergent head; a focusing mirror is arranged in the emergent head, the focusing mirror and the emergent head are always kept in a relatively fixed position, and a reflector group for guiding laser to be always incident to the focusing mirror is arranged on the reference seat and the fixed seat; the emitting head is provided with a vertex extending downwards, and a through hole for emitting laser is arranged at the vertex.

2. The laser assembly rotation driving device according to claim 1, further comprising a longitudinal moving module connected to the emitting head and the focusing mirror, for driving the emitting head and the focusing mirror to move along the Z-axis direction according to a predetermined path, so that the focusing mirror receives the laser light and focuses the laser light inside and outside the entire thickness of the three-dimensional arc glass, and the fixing seat is disposed on the longitudinal moving module; the transverse moving module is connected with the longitudinal moving module and is used for driving the ejection head to transversely move along the Y-axis direction according to a preset path; when the transverse moving module and the longitudinal moving module act on the emitting head to drive the emitting head to move, the driving motor drives the emitting head to swing left and right, so that laser beams emitted by the emitting head are always incident to the surface of the three-dimensional cambered surface glass along the normal direction.

3. The device for driving rotation of a laser module according to claim 1, further comprising a mirror group including a first mirror and a second mirror; the first reflector is arranged in the fixed seat and used for receiving laser emitted by the laser and reflecting the laser; the second reflector is arranged in the reference seat and used for receiving the laser reflected by the first reflector and reflecting the laser to the focusing mirror in the emergent head.

4. The laser assembly rotation driving device according to claim 2, wherein the transverse moving module is disposed on a support, the transverse moving module is movably disposed with a connecting plate along the Y-axis direction, and the longitudinal moving module is disposed with the connecting plate; and a dust cover is arranged on the transverse moving module.

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