阅读说明：本技术 一种采用ccd偏轴定位的激光加工设备及其双标记的激光加工方法 (Laser processing equipment adopting CCD (Charge coupled device) off-axis positioning and double-marking laser processing method thereof ) 是由 徐强 卢健新 黄河森 于 2019-11-28 设计创作，主要内容包括：本发明提供了一种采用双CCD偏轴定位的激光加工设备,包括打标机本体和壳体；其特征在于,所述打标机本体上设有工作台,所述壳体内设有扫描部、第一CCD相机、第二CCD相机和驱动机构；所述扫描部通过升降构件与壳体形成连接；所述升降构件固定在所述壳体内部壁面上；所述扫描部以沿壳体竖直方向往复移动的方式设置在所述升降构件上；所述第一CCD相机和第二CCD相机分别以其照相路径与激光器发出的激光束偏轴的方式设置在所述壳体内两侧,且分别位于第一定位区、第二定位区上方；第一CCD相机的拍摄范围覆盖全部或部分第一定位区；所述第二CCD相机的拍摄范围覆盖全部或部分第二定位区；该设备结构简单,且CCD相机无需与扫描部同轴设置,具有低成本的优点。(The invention provides a laser processing device adopting double CCD (charge coupled device) eccentric positioning, which comprises a marking machine body and a shell, wherein the marking machine body is provided with a marking head; the marking machine is characterized in that a workbench is arranged on the marking machine body, and a scanning part, a first CCD camera, a second CCD camera and a driving mechanism are arranged in the shell; the scanning part is connected with the shell through a lifting component; the lifting component is fixed on the inner wall surface of the shell; the scanning part is arranged on the lifting component in a reciprocating manner along the vertical direction of the shell; the first CCD camera and the second CCD camera are respectively arranged on two sides in the shell in a mode that a photographing path of the first CCD camera and a laser beam emitted by the laser are off-axis and are respectively positioned above the first positioning area and the second positioning area; the shooting range of the first CCD camera covers all or part of the first positioning area; the shooting range of the second CCD camera covers all or part of the second positioning area; the device has simple structure, and the CCD camera does not need to be arranged coaxially with the scanning part, thereby having the advantage of low cost.)

1. A laser processing device adopting double CCD (charge coupled device) eccentric positioning comprises a marking machine body and a shell; the marking machine is characterized in that a workbench is arranged on the marking machine body, and a scanning part, a first CCD camera, a second CCD camera and a driving mechanism are arranged in the shell; the workbench is used for placing a marking object;

the scanning part comprises a laser;

the workbench is provided with a first positioning area and a second positioning area;

the scanning part is connected with the shell through a lifting component; the lifting component is fixed on the inner wall surface of the shell; the scanning part is arranged on the lifting component in a reciprocating manner along the vertical direction of the shell;

the first CCD camera and the second CCD camera are respectively arranged on two sides in the shell in a mode that a photographing path of the first CCD camera and a laser beam emitted by the laser are off-axis and are respectively positioned above the first positioning area and the second positioning area;

the shooting range of the first CCD camera covers all or part of the first positioning area;

the shooting range of the second CCD camera covers all or part of the second positioning area;

the first CCD camera and the second CCD camera are connected with the shell through sliding components, the sliding components are connected with a driving mechanism, and the driving mechanism controls the sliding components to drive the first CCD camera and the second CCD camera to reciprocate along the width direction of the shell or the vertical direction of the shell.

2. The laser machining apparatus according to claim 1, wherein the slide member includes a horizontal slide member and a vertical slide member; the horizontal sliding component and the vertical sliding component are connected with the first CCD camera and the second CCD camera.

3. The laser processing equipment as claimed in claim 2, wherein the horizontal sliding component comprises a fixed seat, a fixed cross beam is arranged at the top of the fixed seat, two discrete support columns extend downwards along the fixed cross beam, and bases are connected to the bottom ends of the two support columns; the base is provided with a plurality of sliding grooves; the sliding groove is embedded with a moving block which slides to and fro relative to the sliding groove, and the moving block is fixedly connected with the first CCD camera/the second CCD camera.

4. The laser processing apparatus according to claim 2, wherein the vertical sliding member includes a housing, a shaft body, and a connecting arm that is fitted around a periphery of the shaft body and slides relative to the shaft body; the shell is connected with the moving block, the two sides of the shell are through, the shaft body is arranged in the shell, and the connecting arm penetrates out of the shell to be fixedly connected with the first CCD camera/the second CCD camera.

5. The laser processing apparatus according to claim 1, wherein the elevation member is provided with two slide rails arranged side by side, and a tray slidably fitted in the two slide rails; the tray is connected with a driving mechanism so that the driving mechanism drives the tray to slide along the two sliding guide rails.

6. The laser processing apparatus according to claim 5, wherein the scanning section is fixedly installed on an upper end surface of a tray, the upper end surface of the tray being horizontally disposed.

7. The laser processing apparatus of claim 5, wherein the elevation member includes an H-shaped support frame and a tray; the H-shaped support frame comprises a bottom fixed end connected with the marking machine body, two discrete parallel guide rail columns are formed by extending upwards along the bottom fixed end, and a sliding guide rail is arranged on one side of each guide rail column, which faces the scanning part; the top end face of the guide rail column is connected with a top cross beam, and the top cross beam is connected with the shell.

8. The laser processing device of claim 7, wherein the H-shaped support frame further comprises a reinforcing beam, two ends of the reinforcing beam are respectively connected with the inner wall surfaces of the middle parts of the two guide rail columns, and two ends of the reinforcing beam are perpendicular to the wall surfaces of the guide rail columns.

9. The laser processing apparatus according to claim 8, wherein the tray is connected to the driving mechanism through a connecting block; the end face of the top cross beam is connected with a driving mechanism, and an output shaft of the driving mechanism penetrates through the top cross beam to be connected with the connecting block.

10. A laser processing method of double marking points applied to the laser processing equipment according to any one of claims 1 to 9, characterized by comprising the laser processing equipment and a computer, wherein the marking pattern is provided with an identification point;

the method comprises the following steps:

step S1: marking two fixed points on the marking object respectively, namely a first fixed point and a second fixed point;

step S2: placing the marking object on a workbench, so that a first fixed point of the marking object is positioned in a first positioning area, and a second fixed point is positioned in a second positioning area;

step S3: the first CCD camera and the second CCD camera are driven by a driving mechanism and adjusted to proper heights, so that the shooting range of the first CCD camera covers the marked object in the first positioning area, and the shooting range of the second CCD camera covers the marked object in the second positioning area;

step S4: starting the first CCD camera and the second CCD camera to shoot the marked object, forming a picture and sending the picture to a computer;

step S5: identifying the relative positions of the first fixed point and the second fixed point of the photo and the marking pattern identification point prestored by the computer through computer software; if the relative position has deviation, the identification point of the marking pattern is configured to be coincided with the first fixed point and the second fixed point by the computer software.

Technical Field

The invention relates to the technical field of laser marking equipment, in particular to laser processing equipment adopting CCD (charge coupled device) off-axis positioning and a double-marking laser processing method thereof.

Background

The existing laser marking machine is widely applied to the life of people, most of the existing laser marking machines utilize a vibrating mirror system to reflect a laser beam to an object, and the track of the laser beam is guided through the rotation of a vibrating lens to realize the marking or cutting of a target shape, but because the vibrating lens rotates at a certain angle, the irradiation of the laser beam generated by a laser is always within a range, which causes some problems, when the marked object is a thin printed product (such as a greeting card, and the like), the marked object is placed askew, so that when the marked object is cut by the marking machine, the pattern is askew; the skewed printed matter can affect the precision of marking, produces defective products, in long-time operation, can produce a lot of defective products, influences efficiency.

In the prior art, a high-pixel CCD (Charge Coupled Device), which is a semiconductor imaging Device, is used to take a clear picture of a processed object, identify the orientation of the processed object in the picture, and then perform laser processing on the processed object; however, the technical scheme needs to be coaxially arranged on the processed laser scanning part, is very difficult to control, and has higher technical implementation difficulty; and the high-pixel CCD camera is high in price, so that the cost of the laser marking equipment is increased.

For example, chinese patent publication No. CN207547883U discloses a CCD camera and galvanometer coaxial scanning system, which includes a galvanometer lens, a collimator, a beam combining seat, a galvanometer lens, a CCD industrial camera and a field lens, wherein the collimator and the CCD industrial camera are both mounted on the beam combining seat, a combining lens is disposed in the beam combining seat, and an axis of the CCD industrial camera is coaxial with an axis of laser emitted by the collimator after being reflected by the combining lens; the laser beam combining seat is connected to the side face of the vibrating lens, the flat field lens is connected to the bottom face of the vibrating lens, a vibrating lens swinging lens is arranged in the vibrating lens and used for totally reflecting laser emitted by the collimator and emitting the laser to the flat field lens. The invention utilizes the characteristic that the CCD industrial camera and the collimator are coaxial, the positioning range of the CCD industrial camera, namely the scanning range of the galvanometer, is completely aligned with the welding point of the laser, the accurate adjustment and positioning of the laser welding point are ensured, and the welding quality is improved. This patent uses the CCD camera and collimator coaxial control to achieve positioning, which has the technical problems as described above, i.e., it is difficult to control the CCD camera to be coaxial with the scanning section, and the cost is too high.

Therefore, in order to solve the technical problems in the prior art, it is important to provide a low-cost dual-CCD off-axis positioning laser processing technology that has a simple structure and does not require a CCD camera to be coaxially disposed with a scanning unit.

Disclosure of Invention

The invention aims to avoid the defects in the prior art and provides a laser processing device adopting double CCD (charge coupled device) off-axis positioning and a laser processing method using double marking points, wherein the laser processing device adopts a double CCD camera to shoot the fixed point of a marked object; two CCD cameras need not to set up with scanning portion laser beam is coaxial, have reduced the technical degree of difficulty, and to the mark thing of big breadth, two CCD cameras are established separately and are made up after shooting the different regions of mark thing, and are more simple and convenient in the operation. In addition, low pixel CCD cameras are relatively inexpensive.

The purpose of the invention is realized by adopting the following technical scheme:

a laser processing device adopting double CCD (charge coupled device) eccentric positioning comprises a marking machine body and a shell; the marking machine body is provided with a workbench, and a scanning part, a first CCD camera, a second CCD camera and a driving mechanism are arranged in the shell; the workbench is used for placing a marking object;

the driving mechanism comprises an adjusting hand wheel, a manual moving structure and a driving mechanism.

The scanning part comprises a laser;

the workbench is provided with a first positioning area and a second positioning area;

the scanning part is connected with the shell through a lifting component; the lifting component is fixed on the inner wall surface of the shell; the scanning part is arranged on the lifting component in a reciprocating manner along the vertical direction of the shell;

the first CCD camera and the second CCD camera are respectively arranged on two sides in the shell in a mode that a photographing path of the first CCD camera and a laser beam emitted by the laser are off-axis and are respectively positioned above the first positioning area and the second positioning area;

the shooting range of the first CCD camera covers all or part of the first positioning area;

the shooting range of the second CCD camera covers all or part of the second positioning area;

the first CCD camera and the second CCD camera are both connected with the shell through sliding components, the sliding components are connected with a driving mechanism, and the driving mechanism controls the sliding components to drive the first CCD camera and the second CCD camera to reciprocate along the width direction of the shell or the vertical direction of the shell;

specifically, the first CCD camera and the second CCD camera are off-axis with respect to the laser beam, that is, the laser exit port is located between the first CCD camera and the second CCD camera.

The sliding member comprises a horizontal sliding member and a vertical sliding member; the horizontal sliding component and the vertical sliding component are connected with the first CCD camera and the second CCD camera;

the horizontal sliding component comprises a fixed seat, a fixed cross beam is arranged at the top of the fixed seat, two separated support columns extend downwards along the fixed cross beam, and the bottom ends of the two support columns are connected with a base; the base is provided with a plurality of sliding grooves; a moving block which slides in a reciprocating manner relative to the sliding groove is embedded in the sliding groove, and the moving block is fixedly connected with the first CCD camera;

the vertical sliding component comprises a shell, a shaft body and a connecting arm which is sleeved on the periphery of the shaft body and slides relative to the shaft body; the shell is connected with the moving block, two sides of the shell are through, the shaft body is arranged in the shell, and the connecting arm penetrates out of the shell and is fixedly connected with the first CCD camera;

specifically, when the driving mechanism drives the horizontal sliding member to move, the moving block moves along the sliding groove, so as to drive the first CCD camera to reciprocate along the width direction of the housing (i.e., the first CCD camera slides back and forth in the horizontal direction);

when the driving mechanism drives the vertical sliding component to move, the connecting arm moves along the shaft body, so that the first CCD camera is driven to reciprocate along the vertical direction of the shell (namely, the first CCD camera slides up and down in the vertical direction).

In the same way as above, the driving mechanism drives the horizontal sliding member to make the second CCD camera move back and forth along the width direction of the housing; the vertical sliding member is driven by the driving mechanism to make the second CCD camera move back and forth along the vertical direction of the shell. And will not be described in detail herein.

Specifically, the first CCD camera and the second CCD camera are moved by arranging the horizontal sliding component and the vertical sliding component, when the breadth of the marked object is large, if the CCD camera is at a lower position, the shooting range of the CCD camera cannot cover the marked object, therefore, the CCD camera needs to be lifted by the vertical sliding component, so that the shooting range of the CCD camera is expanded, and the focal length of the CCD camera is adjusted; when the breadth of the marking object is large and the CCD camera is lifted, the shooting range of the marking object cannot cover the marking object, the CCD camera can shoot the marking object through sliding through the horizontal sliding component, and therefore the fixed point of the marking object is shot.

Specifically, a double CCD camera is adopted to shoot the fixed points of the marked object, and the principle is that the two CCD cameras respectively shoot the two fixed points of the marked object to form a picture which is sent to a computer; the computer identifies and matches the picture with two fixed points and the marking points of the marking pattern, and configures the marking points of the marking pattern to be coincident with the two fixed points; the mark thing of placing inclines on the workstation, shoot two fixed points of establishing on the mark thing through the CCD camera, rethread computer software is according to the condition of current fixed point, mark the identification point distortion of mark pattern with the computer to matching the coincidence with two fixed points, then mark the mark operation, even mark thing is so that the slope is placed, owing to mark the pattern also through the distortion, the event is beaten the pattern that the mark came out and is just on marking the thing, accord with the ideal, can not form crooked pattern on marking the thing, thereby solve prior art's problem, mark precision and yields are beaten in the improvement.

Specifically, in the prior art, a high-pixel CCD camera is used to complete the fixed-point shooting of the marked object, and for a large-width marked object, if a CCD camera needs to complete the fixed-point search, the shooting range of the camera is difficult to cover the marked object, and the fixed-point shooting difficulty is high. And the shooting distance is far, the inner space of the marking machine is limited, and the control coaxially arranged with the scanning part is more difficult to operate. Therefore, the technical scheme adopts the combination of the two CCD cameras with low pixels to complete the fixed-point shooting of the marking object, the two CCD cameras do not need to be coaxially arranged with the laser beam of the scanning part, the technical difficulty is reduced, and for the marking object with large width, the two CCD cameras are respectively arranged to shoot different areas of the marking object and then are combined, so that the operation is simpler and more convenient. In addition, the low-pixel CCD camera is relatively low in price, so that the cost can be reduced in the manufacturing cost of equipment, and the production, the sale and the application are facilitated.

Above, the fixed beam is connected with the top of the shell.

Preferably, the number of the sliding grooves is three, the sliding groove in the middle is a through sliding groove, the through sliding groove is used for penetrating through a screw, one end of the screw is connected with the moving block, and the other end of the screw penetrates through the through sliding groove and is connected with the nut; so that the connection between the moving block and the base is more stable and is not easy to fall off.

Specifically, if the sliding groove is not provided with a through sliding groove, only the moving block is embedded with the through sliding groove and moves on the through sliding groove; the embedded structure enables the moving block to be separated from the sliding groove due to uneven stress in the moving process, so that the connecting structure of the moving block and the sliding groove is unstable; therefore, the movable block is locked in the sliding groove by penetrating the sliding groove through the screw, so that the structure of the sliding block is more stable.

Preferably, the support column is provided with a connecting rib connected with the side wall of the shell, so that the fixing seat can be more firmly fixed on the shell.

Preferably, the bottom surface of the base is connected with a lighting lamp tube.

The lifting component is provided with two sliding guide rails arranged in parallel and a tray which is embedded with the two sliding guide rails and arranged in a sliding manner; the tray is connected with the driving mechanism so that the driving mechanism drives the tray to slide along the two sliding guide rails; the scanning part is fixedly arranged on the upper end surface of the tray;

specifically, the driving mechanism drives the tray to move along the sliding guide rail, so that the scanning part can move up and down, and the actual marking requirement of a user is met.

Preferably, the upper end surface of the tray is horizontally arranged.

Preferably, the lifting member comprises an H-shaped support frame and a tray; the H-shaped support frame comprises a bottom fixed end connected with the marking machine body, two discrete parallel guide rail columns are formed by extending upwards along the bottom fixed end, and a sliding guide rail is arranged on one side of each guide rail column, which faces the scanning part; the top end surface of the guide rail column is connected with a top cross beam, and the top cross beam is connected with the shell;

the H-shaped support frame further comprises a reinforcing cross beam, the two ends of the reinforcing cross beam are respectively connected with the inner wall surfaces of the middle parts of the two guide rail columns, and the two ends of the reinforcing cross beam are perpendicular to the wall surfaces of the guide rail columns.

Specifically, since the housing of the scanning unit is made of a metal plate material, the weight of the scanning unit is generally large. The structural design of H type support frame can make the tray hold up scanning portion and move the in-process, has comparatively stable conveying structure, and structural design is more stable, can reach mild, stable, safe conveying purpose, when the protection scanning portion, has also guaranteed the stability of laser, has improved the precision of beating the mark.

The tray is connected with the driving mechanism through a connecting block; the end face of the top cross beam is connected with a driving mechanism, and an output shaft of the driving mechanism penetrates through the top cross beam to be connected with the connecting block.

The invention also provides a double-marking-point laser processing method applied to the laser processing equipment adopting double CCD off-axis positioning, which comprises the laser processing equipment and a computer, wherein a marking pattern is stored in the computer, and the marking pattern is provided with identification points; the method comprises the following steps:

step S1: marking two fixed points on the marking object respectively, namely a first fixed point and a second fixed point;

step S2: placing the marking object on a workbench, so that a first fixed point of the marking object is positioned in a first positioning area, and a second fixed point is positioned in a second positioning area;

step S3: the first CCD camera and the second CCD camera are driven by a driving mechanism and adjusted to proper heights, so that the shooting range of the first CCD camera covers the marked object in the first positioning area, and the shooting range of the second CCD camera covers the marked object in the second positioning area;

step S4: starting the first CCD camera and the second CCD camera to shoot the marked object, forming a picture and sending the picture to a computer;

step S5: identifying the relative positions of the first fixed point and the second fixed point of the photo and the marking pattern identification point prestored by the computer through computer software; if the relative position has deviation, the identification point of the marking pattern is configured to be coincided with the first fixed point and the second fixed point by the computer software.

Specifically, the method can be used for carrying out fixed point marking on the marked object, shooting the marked object with the fixed point through a CCD camera, and carrying out matching analysis on a shot fixed point picture and a marked pattern recognition point through computer software; if the mark is placed in an inclined mode, the fixed point on the shot picture and the identification point of the marking pattern have deviation, the computer software modifies the identification point of the marking pattern into the fixed point coincidence corresponding to the picture and marks the picture, and the marked pattern cannot be distorted on the mark, so that the problems of inaccurate marking pattern, deviation and the like caused by the fact that the mark is placed in a skew mode can be solved.

The invention has the beneficial effects that:

the laser processing equipment provided by the invention adopts the double CCD cameras to shoot the fixed points of the marked object, and realizes the movement of the first CCD camera and the second CCD camera by arranging the horizontal sliding component and the vertical sliding component; two CCD cameras need not to set up with scanning portion laser beam is coaxial, have reduced the technical degree of difficulty, and to the mark thing of big breadth, two CCD cameras are established separately and are made up after shooting the different regions of mark thing, and are more simple and convenient in the operation. In addition, the low-pixel CCD camera is relatively low in price, so that the cost can be reduced in the manufacturing cost of equipment, and the production, the sale and the application are facilitated.

Drawings

FIG. 1 is a schematic structural diagram of a laser processing apparatus according to the present invention;

2-4 are schematic structural diagrams of the interior of the housing of the laser processing device provided by the invention;

5-6 are schematic structural views of the lifting member of the laser processing device provided by the invention;

FIG. 7 is a schematic structural view of an H-shaped support frame of the laser processing apparatus according to the present invention;

FIGS. 8 to 10 are schematic structural views of a slide member of the laser processing apparatus provided by the present invention;

fig. 11 is a schematic view of a fixing seat structure of the laser processing apparatus provided in the present invention;

fig. 12 is a schematic structural view of a vertical sliding member of the laser processing apparatus provided by the present invention.

Description of the reference numerals

1 marking machine body, 2 shell, 3 lifting component, 4 sliding component;

11 working table, 111 first positioning area and 112 second positioning area;

a scanning unit 21, a first CCD camera 22, a second CCD camera 23, and a driving mechanism 24; 211 laser, 211a laser beam;

the structure comprises a 31H-shaped support frame, a 32 tray, 33 connecting blocks, 311 bottom fixed ends, 312 guide rail columns, 312a sliding guide rails, 313 top cross beams and 314 reinforcing cross beams;

41 horizontal sliding components, 411 fixed seats, 4111 fixed beams, 4112 supporting columns, 4112a connecting ribs, 4113 bases, 4114 sliding grooves, 4115 screws, 4116 moving blocks, 4117 lighting tubes;

42 vertical sliding member, 421 shell, 422 shaft, 423 connecting arm.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1 to 12, the embodiment provides a laser processing apparatus using dual CCD off-axis positioning, which includes a marking machine body 1 and a housing 2; the marking machine body 1 is provided with a workbench 11, and a scanning part 21, a first CCD camera 22, a second CCD camera 23 and a driving mechanism are arranged in the shell 2; the workbench 11 is used for placing a marking object;

the drive mechanism includes an adjustment handwheel (not shown), a manual movement mechanism (not shown), and a drive motor 24.

The scanning section 21 includes a laser 211; the workbench 11 is provided with a first positioning area 111 and a second positioning area 112;

the scanning part 21 is connected with the shell 2 through the lifting component 3; the lifting component 3 is fixed on the inner wall surface of the shell 2; the scanner unit 21 is provided on the elevation member 3 so as to reciprocate in the vertical direction of the housing 2;

the first CCD camera 22 and the second CCD camera 23 are respectively disposed at two sides of the housing 2 in such a manner that their photographing paths are off-axis from the laser beam 211a emitted from the laser 211, and are respectively located above the first positioning area 111 and the second positioning area 112;

the shooting range of the first CCD camera 22 covers all or part of the first positioning area 111;

the shooting range of the second CCD camera 23 covers all or part of the second positioning area 112;

the first CCD camera 22 and the second CCD camera 23 are connected with the shell 2 through a sliding component 4, the sliding component 4 is connected with a driving mechanism, and the driving mechanism controls the sliding component 4 to drive the first CCD camera 22 and the second CCD camera 23 to reciprocate along the width direction of the shell or the vertical direction of the shell; wherein, the CCD camera is controlled by an adjusting handwheel (not shown) to move back and forth in the vertical direction; the manual moving structure controls the CCD camera to slide in the sliding groove to realize the movement in the horizontal direction.

Specifically, the first CCD camera 22 and the second CCD camera 23 are disposed off-axis with respect to the laser beam 211a, that is, the laser exit port is located between the first CCD camera 22 and the second CCD camera 23.

The slide member 4 includes a horizontal slide member 41 and a vertical slide member 42; the horizontal sliding member 41 and the vertical sliding member 42 are connected with the first CCD camera 22 and the second CCD camera 23;

the horizontal sliding member 41 comprises a fixed seat 411, a fixed cross beam 4111 is arranged at the top of the fixed seat 411, two discrete supporting columns 4112 extend downwards along the fixed cross beam 4111, and the bottom ends of the two supporting columns 4112 are connected with a base 4113; the base 4113 is provided with three sliding grooves 4114; the sliding groove 4114 in the middle is a through sliding groove, the through sliding groove is used for penetrating through a screw 4115, one end of the screw 4115 is connected with the moving block 4116, and the other end of the screw penetrates through the through sliding groove and is connected with a nut; so that the connection between the moving block 4116 and the base 4113 is more stable and is not easy to fall off.

If the sliding groove 4114 is not a through sliding groove, only the moving block 4116 is engaged with the through sliding groove and moves on the sliding groove 4114; due to the embedded structure, the moving block 4116 is separated from the sliding groove 4114 due to uneven stress in the moving process, so that the connection structure between the moving block 4116 and the sliding groove 4114 is unstable; therefore, the moving block 4116 is locked in the sliding groove by the screw 4115 penetrating through the sliding groove 4114, so that the structure is more stable.

A moving block 4116 which slides in a reciprocating manner relative to the sliding groove is embedded in the sliding groove 4114, and the moving block 4116 is fixedly connected with the first CCD camera 22;

the vertical sliding member 42 includes a housing 421, a shaft 422, and a connecting arm 423 disposed around the shaft 422 and sliding relative to the shaft; the housing 421 is connected with a moving block 4116, two sides of the housing 421 are through, the shaft body 422 is disposed inside the housing 421, and the connecting arm 423 penetrates through the housing 421 to be fixedly connected with the first CCD camera 22; when the driving mechanism drives the horizontal sliding member 41 to move, the moving block 4116 moves along the sliding groove 4114, so as to drive the first CCD camera 22 to reciprocate along the width direction of the housing (i.e., the first CCD camera 22 slides back and forth in the horizontal direction);

when the driving mechanism drives the vertical sliding member 42 to move, the connecting arm 423 moves along the shaft body 422, so as to drive the first CCD camera 22 to reciprocate along the vertical direction of the housing (i.e., the first CCD camera 22 slides up and down in the vertical direction).

In the same manner as above, the horizontal sliding member 41 is driven by the driving mechanism to reciprocate the second CCD camera 23 in the housing width direction; the vertical slide member 42 is driven by the drive mechanism, and the second CCD camera 23 is reciprocated in the housing vertical direction. And will not be described in detail herein. The first CCD camera 22 and the second CCD camera 23 are moved by arranging the horizontal sliding component 41 and the vertical sliding component 42, when the breadth of the marked object is large, if the CCD cameras 22 and 23 are at lower positions, the shooting range of the marked object cannot be covered, therefore, the CCD cameras need to be lifted by the vertical sliding component, so that the shooting range of the CCD cameras is expanded, and the focal length of the CCD cameras is adjusted; when the breadth of the marking object is large and the CCD camera is lifted, the shooting range of the marking object cannot cover the marking object, the CCD camera can shoot the marking object through sliding through the horizontal sliding component, and therefore the fixed point of the marking object is shot.

In this embodiment, the fixed cross member 4111 is connected to the top of the housing 2. The support column 4112 is provided with a connecting rib 4112a connected with a side wall of the housing 2, so that the fixing seat 411 can be fixed on the housing 2 more firmly. The bottom surface of the base 4113 is connected with a lighting lamp tube 4117, and the lighting lamp tube 4117 can be used for internal lighting of the marking machine, so that a user can observe the workbench.

In the present embodiment, the lifting member 3 includes an H-shaped support frame 31 and a tray 32; the H-shaped support frame 31 comprises a bottom fixed end 311 connected with the marking machine body 1, two separated and parallel guide rail columns 312 are formed by upwards extending along the upper end surface of the bottom fixed end 311, and a sliding guide rail 312a is arranged on one side of each guide rail column 312, which faces the scanning part 21; the top end surface of the guide rail column 312 is connected with a top cross beam 313, and the top cross beam 313 is connected with the shell 2; the tray 32 is slidably engaged with the two slide rails 312a, and the tray 32 is connected with the driving motor 24, so that the driving motor 24 drives the tray 32 to slide along the two slide rails 312 a; the scanning part 21 is fixedly arranged on the upper end surface of the tray 32; the upper end surface of the tray 32 is horizontally arranged. Specifically, the driving motor 24 drives the tray 32 to move along the slide rail 312a, so that the scanning portion 21 can move up and down, and the actual marking requirement of the user is met.

The H-shaped support frame 31 further comprises a reinforcing beam 314, two ends of the reinforcing beam 314 are respectively connected with the inner wall surfaces of the middle parts of the two guide rail columns 312, and two ends of the reinforcing beam 314 are perpendicular to the wall surfaces of the guide rail columns 312.

Specifically, since the housing of the scanning unit 21 is made of a sheet metal material, the weight of the scanning unit 21 is generally large. The structural design of H type support frame 31 can make tray 32 hold up scanning portion 21 and remove the in-process, has comparatively stable conveying structure, and structural design is more stable, can reach mild, stable, safe conveying purpose, when protecting scanning portion 21, has also guaranteed the stability of laser, has improved the precision of beating the mark.

More specifically, the tray 32 is connected with the driving motor 24 through a connecting block 33; the end face of the top cross beam 313 is connected with a driving motor 24, and an output shaft of the driving motor 24 penetrates through the top cross beam 313 to be connected with the connecting block 33.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.