WO2021237413A1

WO2021237413A1 - Laser marking device

Info

Publication number: WO2021237413A1
Application number: PCT/CN2020/092115
Authority: WO
Inventors: 袁杰; 曹洪涛; 刘亮; 吕启涛; 田征; 高云峰
Original assignee: 大族激光科技产业集团股份有限公司
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2021-12-02

Abstract

A laser marking device, comprising a base (100), a laser marking assembly (200), a moving mechanism (300), a rotating mechanism (400) and a carrier (500), wherein the base (100) comprises a bottom plate (110) and a support (120) connected to the bottom plate (110); the laser marking assembly (200) is mounted on the support (120) and is used for outputting a laser to mark a workpiece; the moving mechanism (300) is arranged on the bottom plate (110); the rotating mechanism (400) is connected to the moving mechanism (300), and can perform a translational motion and/or an ascending or descending motion under the driving of the moving mechanism (300); the rotating mechanism (400) comprises a rotating drive part and a linkage part (410), wherein the linkage part (410) is connected to the rotating drive part and can perform a rotating motion under the driving of the rotating drive part; and the carrier (500) is used for carrying a workpiece, and the carrier (500) is connected to the linkage part (410) such that when the rotating drive part drives the linkage part (410) to rotate, the linkage part (410) drives the carrier (500) to rotate.

Description

Laser marking device

Technical field

This application belongs to the field of laser processing technology, specifically, a laser marking device.

Background technique

In the existing laser marking device, when performing laser marking on different sides of the workpiece, the workpiece needs to be disassembled and adjusted in position. The operation is cumbersome, the adjustment accuracy is poor, time-consuming and labor-intensive, and the workpiece cannot be laser-marked well. .

Summary of the invention

Based on this, the present application provides a laser marking device.

The base includes a bottom plate and a bracket connected to the bottom plate;

The laser marking assembly is installed on the bracket and used to output laser to mark the workpiece;

The moving mechanism is arranged on the bottom plate;

A rotating mechanism is connected to the moving mechanism and is capable of translational movement and/or lifting movement under the drive of the moving mechanism; the rotating mechanism includes a rotating drive member and a linkage member, and the linkage member is connected to the rotation The driving member is connected and can rotate under the driving of the rotary driving member; and

A carrier is used to carry the workpiece, and the carrier is connected to the linkage, so that when the rotation driving member drives the linkage to rotate, the linkage drives the carrier to rotate.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the following will briefly introduce the drawings needed in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore do not It should be regarded as a limitation of the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative work.

Figure 1 is an axonometric view of the laser marking device in this embodiment (including the cabinet);

Figure 2 is an axonometric view of the laser marking device in this embodiment (not including the cabinet);

Figure 3 is an axonometric view of the moving mechanism in the laser marking device shown in Figure 2;

Figure 4 is an axonometric view of the laser marking assembly in the laser marking device shown in Figure 2;

FIG. 5 is a schematic diagram of the optical path of the optical path module shown in FIG. 4.

Reference signs: 100, base; 110, bottom plate; 120, bracket; 121, beam; 122, column; 200, laser marking assembly; 210, laser; 220, optical path module; 221, beam expander; 222, vibration Mirror; 223, field lens; 224, first reflector; 225, second reflector; 230, marking head; 300, moving mechanism; 310, lifting assembly; 311, lifting slider; 312, lifting slide; 320 321, first sliding block; 322, first slide rail; 330, second translation component; 400, rotating mechanism; 410, linkage; 500, carrier; 600, adapter plate; 700, Vision alignment system; 710, CCD alignment lens; 720, mounting seat; 800, cabinet; 810, automatic door; 900, cooling mechanism.

Detailed ways

In order to facilitate the understanding of the present application, the laser marking device will be described below in a more comprehensive manner with reference to the relevant drawings. A preferred embodiment of the laser marking device is shown in the drawings. However, the laser marking device can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the laser marking device more thorough and comprehensive.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or a central element may also be present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or an intermediate element may be present at the same time. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of this application. The terms used in the descriptions of the laser marking device, the collector, and the host herein are only for the purpose of describing specific embodiments, and are not intended to limit the application. The term "and/or" as used herein includes any and all combinations of one or more related listed items.

1 and 2, Figures 1 and 2 show a laser marking device in an embodiment of the present invention. The laser marking device in an embodiment includes a base 100, a laser marking assembly 200, and a moving mechanism 300 , Rotating mechanism 400 and carrier 500. The base 100 includes a bottom plate 110 and a bracket 120 connected to the bottom plate 110. The laser marking assembly 200 is installed on the bracket 120 and is used for outputting laser to mark a workpiece. The moving mechanism 300 is provided on the bottom plate 110. The rotating mechanism 400 is connected to the moving mechanism 300, and is capable of translational movement and/or lifting movement under the driving of the moving mechanism 300.

Please refer to FIG. 3 in combination. The rotating mechanism 400 includes a rotating driving member (not shown) and a linking member 410. The linking member 410 is connected to the rotating driving member, and the linking member 410 can rotate under the driving of the rotating driving member. The carrier 500 is used to carry a workpiece, and the carrier 500 is connected to the linkage 410. When the rotation driving member drives the linkage 410 to rotate, the linkage 410 drives the carrier 500 to rotate.

In this embodiment, since the rotating mechanism 400 can drive the linkage 410 to drive the carrier 500 to rotate, the workpiece on the carrier 500 can rotate together with the carrier 500. With this structure, the position of the workpiece can be adjusted without unloading the workpiece, so as to meet the needs of the laser marking assembly 200 for marking different sides of the workpiece, effectively improving operation convenience, improving processing efficiency, and saving costs.

In some embodiments, the rotary drive member is installed with its axis of rotation horizontal, so that when the rotary drive member drives the linkage member 410 to rotate, the axis on which the linkage member 410 drives the carrier 500 to rotate is also horizontal. With the rotation of the carrier 500, different surfaces of the workpiece will be exposed to the marking area of the laser marking assembly 200, thereby meeting the requirements of the laser marking assembly 200 for marking different surfaces of the workpiece.

It should be noted that, in some embodiments, the workpiece may be a printed antenna. The printed antenna means that the antenna circuit is printed on the surface of the substrate, and the substrate may be a printed circuit board. In the processing of printed antennas, in order to meet the printing needs of the antenna circuit, the area of the substrate used is usually larger than the actual area that needs to be used. After the antenna circuit is printed on the substrate, the excess part of the substrate is trimmed by laser marking. Until the required design size is reached, the accuracy and consistency of the printed antenna can be better guaranteed.

Please refer to FIG. 2, the bracket 120 includes a cross beam 121 and two uprights 122. The two uprights 122 are fixedly connected to the bottom plate 110 and arranged side by side at intervals. The crossbeam 121 spans between the two uprights 122. The laser marking assembly 200 is installed on the beam 121, so that when the moving mechanism 300 is installed on the bottom plate 110, the laser marking assembly 200 will be located above the moving mechanism 300, which can be adapted to the laser marking assembly 200 for marking the workpiece. As required, this arrangement can make the mechanisms of the laser marking device more compact, and will not cause the laser marking assembly 200 and the moving mechanism 300 to interfere with each other.

3, the moving mechanism 300 includes a lift assembly 310 and a first translation assembly 320. The first translation assembly 320 is connected to the lift assembly 310. The linkage 410 is installed on the lift assembly 310. Since the carrier 500 is connected to the linkage 410, The lifting assembly 310 can drive the carrier 500 to move up and down, and the first translation assembly 320 can drive the carrier 500 to move in translation, which is convenient for quickly adjusting the workpiece carried by the carrier 500 to the marking station.

In some embodiments, the linkage 410 is connected to a member of the lifting assembly 310. For example, the lifting assembly 310 includes a lifting drive (not shown), a lifting slide 311 and a lifting slide 312, and the linkage 410 is connected to the lifting slide 311. In this embodiment, the lifting slide 311 is slidably connected to the lifting slide 312, the lifting drive can drive the lifting slide 311 to slide along the lifting slide 312, and the lifting slide 311 drives the linkage 410 along the vertical direction (that is, as shown in Figure 3). (Showing the Z direction) lifting movement, so that the workpiece carried by the carrier 500 on the linkage 410 can move up and down in the vertical direction.

In a specific embodiment, the lifting drive member is a motor or an air cylinder.

Please continue to refer to FIG. 3, in some embodiments, the first translation assembly 320 includes a first driving member (not shown), a first sliding block 321 and a first sliding rail 322, and the lifting assembly 310 is connected to the first sliding block 321 superior. In this embodiment, the lifting slide 312 is connected to the first slide 321, the first slide 321 is slidably connected to the first slide 322, and the first slide 322 extends along the first direction (ie, the X direction shown in FIG. 3) The first driving member can drive the first sliding block 321 to slide along the first sliding rail 322, so that the first sliding block 321 drives the lifting assembly 310 to move in translation in the first direction. Since the lifting assembly 310 can drive the carrier 500 to move up and down in the vertical direction, the workpiece carried by the carrier 500 on the lifting assembly 310 can translate in the first direction and move up and down in the vertical direction, so that the workpiece can move to a suitable position. Position, adapt to the needs of laser marking.

In a specific embodiment, the first driving member is a motor or an air cylinder.

Further, referring to FIG. 3, the moving mechanism 300 further includes a second translation component 330. The first translation component 320 is connected to the second translation component 330 and is respectively used to drive the carrier 500 to perform translation movement in two different directions. It is convenient to freely adjust the position of the workpiece and improve the processing accuracy of the workpiece.

In some embodiments, the first translation assembly 320 is mounted on the moving member of the second translation assembly 330. For example, the second translation assembly 330 includes a second driving member, a second sliding block, and a second sliding rail (not shown) , The first translation assembly 320 is connected to the second sliding block. In this embodiment, the second sliding block is slidably connected to the second sliding rail, the second sliding rail is fixed to the bottom plate 110 and extends in the second direction (ie, the Y direction shown in FIG. 3), and the second driving member can drive the second sliding rail. The block slides along the second sliding rail, so that the second sliding block drives the first translation assembly 320 to translate in a second direction, and the second direction is perpendicular to the first direction. Since the first translation component 320 can drive the lifting component 310 to translate in the first direction, the workpiece carried by the carrier 500 on the lifting component 310 can translate in the first direction and the second direction to move the workpiece to a suitable position. , To meet the needs of laser marking.

In a specific embodiment, the second driving member is a motor or an air cylinder.

3, the rotation mechanism 400 includes a rotation driving member and a linkage member 410, the linkage member 410 is connected to the lifting slider 311, the carrier 500 is connected to the linkage member 410, and the rotation driving member can drive the linkage member 410 to rotate to make the linkage The piece 410 drives the carrier 500 to rotate.

In a specific embodiment, the rotating drive member is a rotating cylinder or a motor. The rotation axis of the rotating drive member is the axis extending along the X direction shown in FIG. 3.

In some embodiments, the linkage 410 includes a turntable, and the rotating drive is a rotating motor. The turntable is connected to the output shaft of the rotating motor. The rotating drive can drive the turntable to rotate, so that the turntable drives the workpiece on the carrier 500 to rotate.

In other embodiments, the linkage 410 includes a driving wheel and a driven wheel. The driving wheel and the driven wheel are synchronously connected in transmission. The carrier 500 is fixedly connected to the driven wheel. The driving wheel rotates synchronously, so that the driven wheel drives the workpiece on the carrier 500 to rotate.

Among them, the driving wheel and the driven wheel can be connected by a synchronous belt synchronous transmission. Alternatively, the linkage 410 further includes a chain, and gears are arranged on the outer circumference of the driving wheel and the driven wheel, and the synchronous rotation of the driving wheel and the driven wheel is realized through the cooperation of the chain and the gear.

In other embodiments, the linkage 410 includes a rack and a pinion shaft that mesh with each other. The rotating drive member can drive the rack to reciprocate linearly, and make the rack and pinion meshing drive the pinion shaft to rotate around the axis of the pinion shaft, so that the pinion shaft drives the gear shaft. The workpiece on the carrier rotates, the rotation angle is easy to control and the structure is simple.

Please refer to Figure 2 and Figure 3. The specific process of laser marking of the workpiece is as follows:

S1. The workpiece carried by the carrier 500 is driven by the moving mechanism 300 to move to the marking station. At this time, the workpiece is in the first orientation, and the laser marking assembly 200 performs laser marking on the first surface of the workpiece;

S2. The linkage member 410 is driven to rotate by the rotation angle a by the rotating driving member, and the linkage member 410 drives the rotation angle a of the workpiece carried by the carrier 500 to switch the workpiece to the second orientation, and the laser marking assembly 200 performs Laser Marking;

Repeat the above steps S1 and S2 until the laser marking is completed on different surfaces of the workpiece, the rotation angle is easy to control and the operation is quick and safe.

In some embodiments, the workpiece is a rectangular parallelepiped, one surface of the workpiece is fixed on the carrier 500, and the angle a is 90 degrees. The rotation driving member drives the linkage member 410 to rotate 90 degrees each time, so that the linkage member 410 drives the carrier 500 to switch. To different orientations, the laser marking assembly 200 can perform laser marking on three sides of the workpiece. In other embodiments, the workpiece may also be cylindrical or other irregular shapes, and the angle a may be other than 90 degrees.

In a specific embodiment, the carrier 500 is provided with a loading slot, the workpiece is partially clamped in the loading slot and the part to be marked is exposed outside the loading slot, so that the workpiece can be fixed on the carrier 500 without hindering the processing of the workpiece . Alternatively, the workpiece is sucked and fixed to the carrier 500 by a vacuum suction method.

Further, referring to FIG. 3, the above-mentioned laser marking device further includes an adapter plate 600, which is fixedly connected to the linkage 410 and extends in a horizontal direction, and the carrier 500 is connected to the adapter plate 600 to facilitate the carrier 500 assembly and disassembly.

Please refer to FIG. 4 and FIG. 2 in combination. The laser marking assembly 200 includes a laser 210, an optical path module 220, and a marking head 230. The laser 210 is used to emit laser light. The laser can be incident on the marking head 230 through the optical path module 220. The marking head The laser beam emitted by 230 can irradiate the workpiece.

In some embodiments, please refer to FIG. 4, the optical path module 220 includes a beam expander 221, a galvanometer 222, a field lens 223, and a first mirror 224. The laser light emitted by the laser 210 is expanded by the beam expander 221 and then vibrated The mirror 222 is deflected to be incident on the field lens 223. The field lens 223 is used to focus the light beam and form a linear laser beam. The linear laser beam is deflected by the first reflecting mirror 224 to irradiate the surface of the workpiece.

In this embodiment, the beam expander 221 is located between the laser 210 and the marking head 230, the field lens 223 is located outside the marking head 230, the first reflector 224 is located between the marking head 230 and the carrier 500, and the galvanometer 222 is located in the marking head 230.

In some embodiments, the laser 210 is a continuous laser 210. In other embodiments, the laser 210 may also be a semiconductor laser 210 or a carbon dioxide laser 210.

Further, the optical path module 220 further includes a second reflector 225, which is located between the laser 210 and the beam expander 221, and the laser light emitted by the laser 210 is deflected by the second reflector 225 and is incident on the beam expander 221. By setting the second reflecting mirror 225 in order to change the propagation direction of the laser light, the laser light can be incident on the beam expander mirror 221 exactly.

Please refer to FIG. 2, the above-mentioned laser marking device also includes a visual alignment system 700 and a controller (not shown). The visual alignment system 700 is electrically connected to the controller. The first mirror 224 is a half mirror. , So that the visual alignment system 700 can recognize the position of the workpiece through the first mirror 224 and generate a detection signal. After receiving the detection signal of the visual alignment system 700, the controller can adjust the galvanometer 222 to make The laser emitted by the laser is irradiated to the corresponding position of the workpiece.

Specifically, the visual alignment system 700 includes a CCD alignment lens 710 and a mounting base 720, the mounting base 720 is fixedly connected to the base plate 110, the CCD alignment lens 710 is connected to the mounting base 720, and the CCD alignment lens 710 is located on the first mirror 224 above.

Please refer to FIG. 1, the above-mentioned laser marking device also includes a cabinet 800, and the cabinet 800 is provided with a cavity (not shown) to accommodate the base 100, the laser marking assembly 200, the moving mechanism 300, the rotating mechanism 400, and the carrier 500. , The cabinet 800 can protect each component.

Further, in order to facilitate the opening and closing of the cabinet 800, the cabinet 800 is provided with an automatic door 810, which can be opened by the computer system, thereby exposing the cavity, facilitating the overhaul or maintenance of the components in the cabinet 800, saving labor costs .

Please refer to FIG. 1, the above laser marking device further includes a cooling mechanism 900, which is arranged outside the cabinet 800 and connected to the laser 210 to ensure that the working temperature of the laser 210 is within the normal range and prevent the laser 210 from being burned out due to excessive temperature.

Specifically, the cooling mechanism 900 includes cooling water and a circulation pipe, and the circulation pipe is connected to the laser 210 and used to cool the laser 210.

In the above-mentioned laser marking device, since the rotating mechanism 400 can drive the linkage 410 to drive the carrier 500 to rotate, the workpiece on the carrier 500 can rotate together with the carrier 500. With this structure, the position of the workpiece can be adjusted without unloading the workpiece, so as to meet the needs of the laser marking assembly 200 for marking different sides of the workpiece, effectively improving operation convenience, improving processing efficiency, and saving costs.

In all the examples shown and described herein, any specific value should be interpreted as merely exemplary, rather than as a limitation, and therefore, other examples of the exemplary embodiment may have different values.

It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

The above-mentioned embodiments only express several implementation manners of the present application, and the descriptions are relatively specific and detailed, but they should not be understood as limiting the scope of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can be made, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be subject to the appended claims.

Claims

A laser marking device, which is characterized in that it comprises:

The base includes a bottom plate and a bracket connected to the bottom plate;

The laser marking assembly is installed on the bracket and used to output laser to mark the workpiece;

The moving mechanism is arranged on the bottom plate;

A rotating mechanism is connected to the moving mechanism and can be translated and/or lifted under the drive of the moving mechanism; the rotating mechanism includes a rotating drive member and a linkage member, the linkage member and the rotating drive Are connected to each other and can rotate under the drive of the rotating drive member; and

A carrier is used to carry the workpiece, and the carrier is connected to the linkage, so that when the rotation driving member drives the linkage to rotate, the linkage drives the carrier to rotate.
The laser marking device according to claim 1, wherein the linkage member comprises a turntable, the rotation driving member is a rotating electric machine, and the turntable is connected with an output shaft of the rotating electric machine.
The laser marking device according to claim 1, wherein the linkage includes a driving wheel and a driven wheel, the driving wheel is synchronously connected to the driven wheel, and the carrier is fixedly connected to the driven wheel. A driving wheel, the rotation driving member can drive the driving wheel to rotate.
The laser marking device according to claim 1, wherein the linkage member includes a rack and a pinion shaft that mesh with each other, and the rotation driving member can drive the rack to reciprocate linearly, and make the teeth The gear shaft is meshed to drive the gear shaft to rotate around the axis of the gear shaft, and the carrier is fixedly connected with the gear shaft.
The laser marking device according to claim 1, wherein the moving mechanism comprises a first translation component and a lifting component, and the linkage is installed on the lifting component, and the first translation component is connected to the lifting component. The components are connected, the lifting component is used to drive the carrier to move in translation, and the first translation component is used to drive the vehicle to move in up and down.
The laser marking device according to claim 5, wherein the lifting assembly includes a lifting drive, a lifting slide, and a lifting slide, the linkage is connected to the lifting slide, the lifting slide The lifting slide is slidably connected to the lifting slide, the lifting driving member drives the lifting slider to slide along the lifting slide, and the first translation component is connected to the lifting slide.
The laser marking device according to claim 6, wherein the moving mechanism further comprises a second translation component, and the first translation component is connected to the second translation component and is used to drive the carrier respectively. With translational movement in two different directions.
The laser marking device according to claim 7, further comprising at least one of the following:

The first translation component includes a first driving member, a first sliding block, and a first sliding rail. The first sliding rail is connected to the lifting sliding block, and the first sliding block is slidably connected to the first sliding block. Rail, the first driving member can drive the first sliding block to slide along the first sliding rail;

The second translation assembly includes a second driving member, a second sliding block, and a second sliding rail, the second sliding rail extends in a second direction, and the second sliding block is slidably connected to the second sliding rail, The second driving member can drive the second sliding block to slide along the second sliding rail.
The laser marking device according to claim 1, wherein the laser marking assembly comprises a laser, an optical path module and a marking head, the laser is used to emit laser light, and the laser light can be incident through the optical path module. To the marking head, the laser light emitted by the marking head can irradiate the workpiece.
The laser marking device according to claim 9, wherein the optical path module includes a beam expander, a galvanometer, a field lens, and a first reflector, and the beam expander is located between the laser and the marking Between the heads, the galvanometer is arranged in the marking head, the field lens is arranged outside the marking head, and the first reflecting mirror is located between the marking head and the carrier, The laser light emitted by the laser is beam-expanded by the beam expander, is incident on the field lens via the galvanometer, and is deflected by the first mirror to irradiate the workpiece.
The laser marking device according to claim 10, further comprising a visual alignment system and a controller, the visual alignment system is electrically signaled to the controller, and the first reflector is semi-transparent Half mirror, so that the visual alignment system can recognize the position of the workpiece through the first mirror and generate a detection signal, and the controller receives the detection signal of the visual alignment system Then, the galvanometer mirror can be adjusted so that the laser light emitted by the laser irradiates the corresponding position of the workpiece.