CN210451383U - 3D laser marking device for large-radian deep inner wall annular marking - Google Patents
3D laser marking device for large-radian deep inner wall annular marking Download PDFInfo
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- CN210451383U CN210451383U CN201920740695.5U CN201920740695U CN210451383U CN 210451383 U CN210451383 U CN 210451383U CN 201920740695 U CN201920740695 U CN 201920740695U CN 210451383 U CN210451383 U CN 210451383U
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Abstract
The utility model discloses a 3D laser marking device for large-radian deep-inner-wall annular marking, which comprises a laser, a focusing lens group, a galvanometer, a mechanical device, a positioning device and a control system, wherein a workpiece is arranged on the mechanical device, and the mechanical device is connected with the control system and is used for controlling the rotation of the workpiece; the positioning device is connected with the control system and used for positioning the marking position; the galvanometer is connected with the control system and used for controlling the positions of the laser focus in the X and Y directions of the workpiece; the focusing mirror group is connected with the control system and is used for controlling the position of a laser focus in the Z-axis direction of the workpiece; after laser emitted by the laser is focused through the focusing lens group, the laser is ejected to a workpiece through the vibrating lens, the positioning device grabs the outer contour of the workpiece to position the workpiece, and the mechanical device controls the rotation of the workpiece to complete annular marking of the workpiece.
Description
Technical Field
The utility model relates to a 3D laser marking technical field especially relates to carry out the 3D laser marking of the mark is beaten to the large radian annular on the work piece internal surface, specifically is a 3D laser marking device of mark is beaten to the deep inner wall annular of large radian.
Background
The 3D laser marking is a processing mode that changes the laser surface, and it uses high energy density laser to locally irradiate the workpiece, causing the surface layer material to undergo physical or chemical changes, physical changes including vaporization, and chemical changes including color changes, leaving a permanent mark. The laser marking can mark various characters, figure files, two-dimensional codes and the like, and the minimum quantity of the characters can reach micron. Laser generated by a laser is subjected to a series of optical conduction, and finally is subjected to beam focusing through an optical lens, and then the focused high-energy beam is deflected to a designated position on the surface of an object to be processed to form a permanent trace.
The traditional 2D laser marking adopts a post-focusing mode, and generally only can carry out plane marking within a specified range. The 3D laser marking machine adopts an advanced front focusing mode, a dynamic focusing seat is added, the dynamic focusing lens is controlled and moved through software, variable beam expansion is carried out before laser is focused, and accurate surface focusing processing of different objects in height is realized by changing the focal length of a laser beam.
Although 3D laser marking has been achieved, it still has certain drawbacks in use. After 3D is used, marking on the outer surface of the horizontally placed cylinder at a certain radian can be completed at one time without deformation; if the marking with a large radian is carried out on the inner surface of the cylinder, the workpiece needs to deflect at a certain angle due to the shielding of the surface of the workpiece on the laser, so that the laser irradiates the inner surface through the opening of the cylinder to carry out marking. If the marking drawing file is pasted on the deep inner wall of the obliquely placed cylinder, because the drawing file is pasted in the vertical direction, the pasting graph is arc-shaped on the surface of the cylinder, the marking drawing file can deform, and seams can be generated by the joint of different sections of texts in the annular marking process. There is therefore a need for improvement in this process.
Disclosure of Invention
The utility model aims at the problem that prior art exists, provide a dark inner wall annular of large radian beats 3D laser marking device of mark, solve and carry out annular when beating mark the problem that mark scale document warp and the different sections text of mark joint are beaten to the annular at large radian drum internal surface, paste when having avoided the slope work piece to beat the mark and cover the deformation at work piece surface figure shelves.
In order to achieve the above object, the utility model adopts the following technical scheme:
A3D laser marking device for large-radian deep-inner-wall annular marking comprises a laser, a focusing lens group, a galvanometer, a mechanical device, a positioning device and a control system, wherein a workpiece is mounted on the mechanical device, and the mechanical device is connected with the control system and used for controlling the rotation of the workpiece; the positioning device is connected with the control system and used for positioning the marking position; the galvanometer is connected with the control system and used for controlling the positions of the laser focus in the X and Y directions of the workpiece; the focusing mirror group is connected with the control system and is used for controlling the position of a laser focus in the Z-axis direction of the workpiece; after laser emitted by the laser is focused through the focusing lens group, the laser is ejected to a workpiece through the vibrating lens, the positioning device grabs the outer contour of the workpiece to position the workpiece, and the mechanical device controls the rotation of the workpiece to complete annular marking of the workpiece.
Furthermore, the mechanical device is arranged at a certain angle with the horizontal plane. The workpiece arranged on the mechanical device is also arranged at a certain angle with the horizontal plane.
Preferably, the large-radian deep inner wall is the inner surface of a cylindrical workpiece.
Preferably, the diameter of the cylindrical workpiece is greater than 4 mm.
Preferably, the positioning device grabs the side length of the part at the opening of the workpiece, and the marking area is positioned through the control system.
Preferably, the mechanical device rotates in the axial direction and the radial direction, the axial rotation controls the workpiece to rotate so as to complete the full-circle marking of the large-radian deep inner wall, and the radial rotation controls the included angle between the workpiece and the horizontal plane.
Further, the mechanical device controls the rotation angle of the axial rotation of the workpiece, the size of the rotation angle is related to the length of the segmented figure file, and the rotation angle is determined according to the central angle corresponding to the arc-shaped document.
Preferably, the mechanical means is at an angle of less than 60 ° to the horizontal.
Preferably, the focusing mirror group comprises a group of first lens and second lens which are arranged in parallel and opposite, the first lens is fixed, and the second lens is arranged on the Z-axis adjusting driver.
Further, the Z-axis adjusting driver comprises a fixing seat and a motor, the motor is fixedly installed on the fixing seat, a strip-shaped guide rail is arranged on the fixing seat, a sliding block is installed on the strip-shaped guide rail, a lens seat is installed on the sliding block, and the second lens is embedded on the lens seat.
Further, the motor is connected with the rotating shaft, a driving device is connected to the rotating shaft, the driving device comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is connected with the rotating shaft, the other end of the first connecting rod is connected with the second connecting rod, and the second connecting rod is connected with the sliding block and used for driving the sliding block to slide back and forth on the strip-shaped guide rail.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model controls the rotation of the workpiece through a mechanical device connected with a control system, positions the marking position through a positioning device connected with the control system, controls the position of a laser focus in the X and Y directions of the workpiece through a vibrating mirror connected with the control system, and controls the position of the laser focus in the Z-axis direction of the workpiece through a focusing mirror group connected with the control system, thereby realizing the annular marking of the large-radian deep inner wall; and, the utility model discloses a to beating the mark drawing shelves and segmenting, carry out the arc respectively to each segmentation drawing shelves and handle, make the mark drawing shelves of beating after handling be the vertical range of character and level personally submitting in the camber line and the drawing shelves, then carry out the mark of beating of all segmentation drawing shelves through rotatory work piece, thereby when the mark is beaten to the annular that realizes the dark inner wall of big radian, subside when having solved the slope work piece and cover the deformation problem that leads to beating the mark drawing shelves at the deformation of work piece surface drawing shelves, and the seam problem of the different section text joints of mark is beaten to the annular.
Drawings
Fig. 1 is according to the embodiment the utility model relates to a 3D laser marking device of marking is beaten to dark inner wall annular of large radian's structural schematic diagram.
Figure 2 is used according to the embodiment the utility model discloses the device carries out the 3D laser marking's of the dark inner wall annular of large radian marking flow diagram.
FIG. 3 is a schematic view of a processed arc drawing file attached to a large arc deep inner wall according to an embodiment.
Fig. 4 is a schematic structural view of a marking device according to an embodiment.
FIG. 5 is a schematic diagram illustrating comparison of marking effects of a pre-process graphic and a post-process graphic marked on a workpiece according to an embodiment.
Fig. 6 is a schematic structural diagram of a focusing mirror group according to an embodiment.
Fig. 7 is a schematic structural diagram of a Z-axis adjustment actuator according to an embodiment.
In the figure: the laser marking device comprises a laser 1, a focusing mirror group 2, a galvanometer 3, a positioning device 4, a marking device 5, an arc-shaped marking document 6, a workpiece 7, a mechanical device 8, a graphic effect before marking treatment 9, a graphic effect after marking treatment 10, a first lens 21, a second lens 22, a Z-axis adjusting driver 11, a base 111, a motor 112, a first connecting rod 113, a second connecting rod 114, a sliding block 115, a strip guide rail 116 and a lens base 117.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the 3D laser marking device for large-radian deep-inner-wall annular marking comprises a laser 1, a focusing lens group 2, a galvanometer 3, a positioning device 4, a marking device 5 and a control system, wherein the control system comprises a computer system. As shown in fig. 4, the marking device 5 includes a mechanical device 8 and a marking 7 mounted on the mechanical device 8. The mechanical device 8 is connected with a control system and used for controlling the rotation of the marking object 7; the positioning device 4 is connected with the control system and used for positioning the marking position; the galvanometer 3 is connected with a control system and used for controlling the positions of the laser focus in the X and Y directions of the marking object 7; the focusing lens group 2 is connected with a control system and used for controlling the position of the laser focus in the Z-axis direction of the marking object 7. Laser that laser instrument 1 sent carries out the focusing back through focusing mirror group 2, process shake mirror 3 and jet out on marking device 5 and beat mark 7, through control positioner 4 snatchs the outline of marking 7 and fixes a position, and through control marking 7 is rotated to mechanical device 8, accomplishes and beats the annular of marking 7.
It should be noted that the control system includes a computer system, and methods for controlling the mechanical device to drive the workpiece to rotate, controlling the positioning device to position the workpiece, controlling the galvanometer to adjust the laser focus, and controlling the focusing mirror group to adjust the laser focus all belong to the prior art in the field, and are not described herein.
In the specific implementation, the mechanical device 8 is disposed at an angle to the horizontal plane, and therefore, the marker 7 mounted on the mechanical device 8 is also disposed at an angle to the horizontal plane. As a preferred embodiment, the angle between the mechanical device 8 and the horizontal plane is less than 60 °.
Specifically, the positioning device 4 grabs the side length of a part at the opening of the marker 7, and then positions the marking area through the control system, so that the marking area of the marker 7 corresponds to the marking area of the 3D model in the computer system.
In specific implementation, the mechanical device 8 rotates in the axial direction and the radial direction, the axial rotation controls the marking object 7 to rotate so as to complete large-radian deep inner wall full-circle marking, and the radial rotation controls the included angle between the marking object 7 and the horizontal plane.
As shown in fig. 6, the focusing lens group 2 includes a group of first lens 21 and second lens 22 that are parallel and are disposed oppositely, the first lens 21 is fixed, the second lens 22 is installed on the Z-axis adjusting driver 11, the second lens 22 can move left and right under the driving of the Z-axis adjusting driver 11 to adjust the distance between the two lenses, and finally, the position of the laser focus in the Z-axis direction of the marking object 7 is adjusted, and when the distance between the first lens 21 and the second lens 22 is different, the position of the laser focus in the Z-axis direction is also different after the laser is focused.
Specifically, as shown in fig. 7, the Z-axis adjustment driver 11 includes a fixing base 111 and a motor 112, the motor 112 and a strip-shaped guide rail 116 are installed on the fixing base 111, a slider 115 is installed on the strip-shaped guide rail 116, a lens base 117 is installed on the slider 115, and the second lens 22 is embedded on the lens base 117. The motor 112 is connected with the rotating shaft, a first connecting rod 113 and a second connecting rod 114 are connected to the rotating shaft, the first connecting rod 113 and the second connecting rod 114 are driving devices, two ends of the first connecting rod 113 are respectively connected with the rotating shaft and the second connecting rod 114, and the second connecting rod 114 is connected with the sliding block 115 and used for driving the sliding block 115 to slide back and forth on the guide rail 116.
The working process of the Z-axis adjusting driver 11 is as follows: firstly, the control system sends an instruction to the Z-axis adjusting driver 11 according to the specific marking requirement so as to start the motor 112 to perform corresponding operation, when the motor 112 rotates, the first connecting rod 113 is driven to rotate by the rotating shaft, the first connecting rod 113 rotates and then drives the second connecting rod 114 and the sliding block 115 to move in turn, so that the second lens 22 is driven to move, the distance between the first lens 21 and the second lens 22 is changed, and finally the position of the laser focus in the Z-axis direction is changed.
In one embodiment, the deep inner wall with large radian is the inner surface of a cylindrical workpiece. The diameter of the cylindrical workpiece is larger than 4 mm.
Specifically, as shown in fig. 2, use the utility model discloses a device carries out the dark inner wall annular of large radian and beats the specific step of beating mark 3D laser, include:
s1: importing a 3D model of a workpiece: the control system includes a computer system within which a 3D model of a workpiece is imported.
S2: adjusting the 3D model of the workpiece: and adjusting the position of the workpiece model to enable the focal plane to be positioned at the central position of the region needing to be marked on the workpiece.
S3: leading in a marking drawing file: and importing the drawing to be marked into the computer system.
S4: processing the drawing file: dividing the marked figure file into 3-4 sections, and performing arc treatment on each section, wherein the radian of the curve of the figure file is the same as the outer contour of the workpiece. After the marking drawing is segmented, the segmented drawing does not contain incomplete graphs or characters or combination of the incomplete graphs and the characters. It should be noted that the complete drawing for marking includes graphics, text, or a combination of both. After the segmented drawing files are arranged according to the arc line with a certain radian, the marking drawing files are in the shape of the arc line, and the characters in the drawing files are vertically arranged with the horizontal plane.
S5: pasting a drawing file: the first drawing file to be marked is attached along the inner surface of the 3D model, as shown in FIG. 3. For the applied marking pattern, the vertical depth on the inner surface of the workpiece is at least 6 mm.
S6: placing a workpiece: and placing the workpiece 7 corresponding to the 3D model on a mechanical device 8, wherein the mechanical device 8 and the horizontal plane form a certain angle.
S7: positioning a workpiece: the positioning device 4 grabs the outer contour of the workpiece 7 to position the marked area, and the workpiece 7 is ensured to correspond to the position in the software.
S8: marking a workpiece: the computer system controls the position of the laser focus in X, Y and Z directions of the workpiece 7 by controlling the galvanometer 3 and the focusing mirror group 2, and marks a corresponding marking chart file on the corresponding position of the workpiece 7.
S9: rotating the workpiece: the mechanical device 8 controls the rotation angle of the workpiece 7 through a control system. The mechanical device 8 controls the rotation angle of the workpiece 7 in the axial direction, and the rotation angle is related to the length of the segmented figure file.
S10: annular marking: and marking the subsequent several segments of picture files in the same marking method as S5-S9 until all the segments of texts are marked.
Fig. 5 is a schematic diagram showing the comparison between the marking effect of the pre-processing drawing and the marking effect of the post-processing drawing on the workpiece, wherein 9 represents the marking effect of the pre-processing drawing, and 10 represents the marking effect of the post-processing drawing. It can be seen, use the utility model discloses a device is beating the standard in the annular that carries out big radian drum internal surface, pastes when can avoiding the slope work piece to beat the mark and cover the deformation that leads to beating the mark drawing shelves and the seam problem of beating different section text joints of mark in the deformation of work piece surface drawing shelves and annular.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A3D laser marking device for large-radian deep-inner-wall annular marking is characterized by comprising a laser, a focusing mirror group, a galvanometer, a mechanical device, a positioning device and a control system, wherein a workpiece is mounted on the mechanical device, and the mechanical device is connected with the control system and used for controlling the rotation of the workpiece; the positioning device is connected with the control system and used for positioning the marking position; the galvanometer is connected with the control system and used for controlling the positions of the laser focus in the X and Y directions of the workpiece; the focusing mirror group is connected with the control system and is used for controlling the position of a laser focus in the Z-axis direction of the workpiece; after laser emitted by the laser is focused through the focusing lens group, the laser is ejected to a workpiece through the vibrating lens, the positioning device grabs the outer contour of the workpiece to position the workpiece, and the mechanical device controls the rotation of the workpiece to complete annular marking of the workpiece.
2. The large-radian deep-inner-wall annular-marking 3D laser marking device as claimed in claim 1, wherein the large-radian deep inner wall is the inner surface of a cylindrical workpiece.
3. The large arc deep inner wall annular marking 3D laser marking device according to claim 2, wherein the diameter of the cylindrical workpiece is greater than 4 mm.
4. The large-radian deep-inner-wall annular marking 3D laser marking device as claimed in claim 1, wherein the positioning device is used for grabbing the side length of the part of the opening of the workpiece, and the marking area is positioned through the control system.
5. The large-radian deep-inner-wall annular marking 3D laser marking device as claimed in claim 1, wherein the mechanical device rotates in both axial and radial directions, the axial rotation controls the workpiece to rotate so as to complete the full-circle marking of the large-radian deep inner wall, and the radial rotation controls the included angle between the workpiece and the horizontal plane.
6. The large arc deep inner wall annular marking 3D laser marking device as claimed in claim 1, wherein the angle between the mechanical device and the horizontal plane is less than 60 °.
7. The large arc deep inner wall annular marking 3D laser marking device as claimed in claim 1, wherein the focusing lens group comprises a group of first and second lenses which are parallel and opposite, the first lens is fixed, and the second lens is mounted on the Z-axis adjusting driver.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920740695.5U CN210451383U (en) | 2019-05-22 | 2019-05-22 | 3D laser marking device for large-radian deep inner wall annular marking |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920740695.5U CN210451383U (en) | 2019-05-22 | 2019-05-22 | 3D laser marking device for large-radian deep inner wall annular marking |
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| CN210451383U true CN210451383U (en) | 2020-05-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110125551A (en) * | 2019-05-22 | 2019-08-16 | 武汉华工激光工程有限责任公司 | The 3D laser mark printing device and method of wall circular mark in a kind of big radian depth |
-
2019
- 2019-05-22 CN CN201920740695.5U patent/CN210451383U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110125551A (en) * | 2019-05-22 | 2019-08-16 | 武汉华工激光工程有限责任公司 | The 3D laser mark printing device and method of wall circular mark in a kind of big radian depth |
| CN110125551B (en) * | 2019-05-22 | 2024-06-18 | 武汉华工激光工程有限责任公司 | 3D laser marking device and method for large-radian deep inner wall annular marking |
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