Curved surface laser marking device compatible with non-regular cylinder and marking method

Abstract

The invention belongs to the technical field of laser marking, and particularly relates to a curved surface laser marking device compatible with a non-regular cylinder, which comprises a box body bracket, a translation mechanism is arranged in the box body bracket, a laser marking device is inversely arranged on the translation mechanism, and the translation mechanism controls the laser marking device to move in the horizontal direction. The laser marking device emits laser upwards for marking, a first rotating shaft and a second rotating shaft which are parallel to each other are installed above the box body support, the first rotating shaft and the second rotating shaft rotate synchronously to drive the marking column bodies on the rotating shafts to rotate, and the laser marking device is arranged below the first rotating shaft and the second rotating shaft. According to the laser marking device, the laser marking device is inversely installed below the marking column body, the curved surface of the marking column body is attached to the first rotating shaft and the second rotating shaft to rotate due to the gravity effect, the marking curved surface of the marking column body is located below, the distance between the marking curved surface of the marking column body and the laser marking device is not changed all the time, and it is guaranteed that the laser marking device can mark patterns on the marking curved surface stably and clearly; and the condition of distortion is avoided.

Description

Technical Field

[0001] The invention relates to a curved surface laser marking device, in particular to a curved surface laser marking device compatible with non-perfect cylinders. Background Art

[0002] Laser marking machines use the interaction between laser beams and object materials to control the energy of the laser beam and the position of the focal point to achieve operations such as marking, engraving and labeling on the surface of objects. When marking curved surfaces that are not cylindrical, existing laser marking devices cannot control the distance between the laser head and the marking surface, resulting in partial marking failure or distorted marking patterns. Summary of the invention

[0003] In view of the above-mentioned prior art, the present invention provides a curved surface laser marking device compatible with non-perfect cylinders, and the problem to be solved is that the existing laser marking device cannot clearly mark the curved surface of the non-perfect cylinder.

[0004] To achieve the above object, the technical solution of the embodiment of the present invention is implemented as follows:

[0005] A curved surface laser marking device compatible with non-perfect cylinders comprises a box bracket, a translation mechanism is installed in the box bracket, a laser marker is installed in the translation mechanism, the translation mechanism controls the laser marker to move in the horizontal direction, the laser marker emits laser upward for marking, a first rotating shaft and a second rotating shaft parallel to each other are installed above the box bracket, the first rotating shaft and the second rotating shaft rotate synchronously to drive the marking cylinder thereon to rotate, and the laser marker is below the first rotating shaft and the second rotating shaft.

[0006] Furthermore, the translation mechanism includes a third moving device that moves along a direction parallel to the first rotation axis, and the laser marker is connected to the third moving device.

[0007] Furthermore, the translation mechanism also includes a first moving device, a second moving device and a connecting rod, the first moving device and the second moving device are fixedly connected by the connecting rod, the connecting rod is parallel to the first rotation axis, the third moving device is slidably connected to the connecting rod, the box bracket includes a first bracket and a second bracket parallel to each other, the first moving device and the second moving device both include rollers, the first moving device moves on the first bracket via the rollers, and the second moving device moves on the second bracket via the rollers, a first control device is provided on the box bracket, the first control device controls the first moving device and the second moving device to move in a horizontal direction perpendicular to the first rotation axis, and a second control device is provided on the second moving device, the second control device controls the third moving device to move on the connecting rod in a horizontal direction parallel to the first rotation axis.

[0008] Furthermore, a lifting mechanism is installed on the third moving device, and the laser marker is installed on the lifting mechanism. The lifting mechanism controls the lifting and lowering of the laser marker to perform focusing.

[0009] Furthermore, the rollers on the first mobile device and the second mobile device each include 1 upper roller and 2 lower rollers, the upper roller of the first mobile device rolls above the first bracket, the upper roller of the second mobile device rolls above the second bracket, the lower roller of the first mobile device rolls below the first bracket, and the lower roller of the second mobile device rolls below the second bracket.

[0010] Furthermore, groove channels are provided on the upper and lower parts of the first bracket and the second bracket, and the rollers of the first moving device and the second moving device roll along the groove channels respectively.

[0011] Furthermore, a first track is installed directly above the first bracket, and a second track is installed directly above the second bracket. The first track and the second track are at the same height. The first rotating axis and the second rotating axis are both perpendicular to the first track and the second track. Roller support frames are installed at both ends of the first rotating axis and the second rotating axis, and the roller support frames move on the first track and the second track respectively.

[0012] Furthermore, the parts where the first rotating shaft and the second rotating shaft contact the marking cylinder are respectively sleeved with anti-slip rubber.

[0013] A marking method for a curved surface laser marking device compatible with non-perfect cylinders, comprising the following steps:

[0014] Step 1: Place the marking cylinder on the first rotating shaft and the second rotating shaft, and the marking cylinder rotates smoothly along with the first rotating shaft and the second rotating shaft;

[0015] Step 2: Use the translation mechanism to move the laser marker horizontally to the bottom of the curved surface of the marking cylinder where marking is required;

[0016] Step 3: Start the laser marker, and the marking surface of the marking cylinder rotates in accordance with the first rotation axis and the second rotation axis. During the laser marking process, the distance between the bottom of the marking surface and the laser marker remains unchanged until the laser marking operation is completed.

[0017] The beneficial effect of the present invention is that it can not only mark cylinders and large-surface objects like the existing laser marking devices, but also mark the curved surfaces of non-perfect cylinders. It directly uses the effect of gravity to make the curved surface of the non-perfect cylinder always rotate in accordance with the rotation axis, and the distance between the bottom marked curved surface and the laser head remains unchanged, thereby ensuring that there is no focus deviation during the curved surface marking process. Compared with the existing technology, the problem of partial marking failure or distorted marking pattern in the laser marking process is eliminated, and the curved surface marking effect of non-perfect cylinders can be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional view of a curved surface laser marking device compatible with non-perfect cylinders provided by the present invention;

[0019] Figure 2 A partial structural schematic diagram of a curved surface laser marking device compatible with non-circular cylinders provided by the present invention;

[0020] Figure 3 A partial structural schematic diagram of a curved surface laser marking device compatible with non-circular cylinders provided by the present invention.

[0021] Explanation of the accompanying drawings: 1. Box bracket; 2. Translation mechanism; 3. First rotating axis; 4. Second rotating axis; 5. Laser marker; 6. Lifting mechanism; 7. First moving device; 8. Second moving device; 9. Third moving device; 10. First bracket; 11. Second bracket; 12. First control device; 13. Second control device; 14. Roller; 15. Groove channel; 16. First track; 17. Second track; 18. Connecting rod; 19. Roller support frame; 20. Upper roller; 21. Lower roller. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further elaborated in detail below in conjunction with the drawings and specific embodiments of the specification. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. In the following description, the expression "some embodiments" is related to a subset of all possible embodiments, but it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0023] Combined with reference to Figures 1 to 3The present invention provides a curved surface laser marking device compatible with non-perfect cylinders, including a box support 1, a translation mechanism 2 is installed in the box support 1, a laser marker 5 is installed in the translation mechanism 2, the translation mechanism 2 controls the laser marker 5 to move in the horizontal direction, the laser marker 5 emits laser upward for marking, a first rotating shaft 3 and a second rotating shaft 4 are installed above the box support 1 in parallel, the first rotating shaft 3 and the second rotating shaft 4 rotate synchronously to drive the marking cylinder thereon to rotate, and the laser marker 5 is below the first rotating shaft 3 and the second rotating shaft 4. When in use, the marking cylinder is placed on the first rotating shaft 3 and the second rotating shaft 4, the marking cylinder rotates synchronously with the first rotating shaft 3 and the second rotating shaft 4, the laser marker 5 is horizontally moved to the bottom of the marking cylinder by the translation mechanism 2, and the laser marker 5 is installed upside down. Due to the effect of gravity, the marking curved surface of the marking cylinder is always in contact with the surface of the first rotating shaft 3 and the second rotating shaft 4, so that the distance from the bottom of the marking curved surface to the laser marker 5 remains unchanged, and there will be no pattern distortion during the marking process. A device that enables the first rotating shaft 3 and the second rotating shaft 4 to rotate synchronously, for example: the two rotating shafts are connected by a belt. When the relative distance between the two rotating shafts changes, the belt is adjusted by an adjusting device to ensure the tightness. The connection of the belt can ensure the synchronous rotation of the two rotating shafts.

[0024] Preferably, the translation mechanism 2 includes a third moving device 9 that moves in a direction parallel to the first rotation axis 3, and the laser marker 5 is connected to the third moving device 9. The third moving device 9 can drive the laser marker 5 thereon to move in a direction parallel to the first rotation axis 3.

[0025] Preferably, the translation mechanism 2 also includes a first moving device 7, a second moving device 8 and a connecting rod 18, the first moving device 7 and the second moving device 8 are fixedly connected by the connecting rod 18, the connecting rod 18 is parallel to the first rotation axis 3, the third moving device 9 is slidably connected to the connecting rod 18, the box bracket 1 includes a first bracket 10 and a second bracket 11 parallel to each other, the first moving device 7 and the second moving device 8 both include rollers 14, the first moving device 7 moves on the first bracket 10 through the rollers 14, and the second moving device 8 moves on the second bracket 11 through the rollers 14, a first control device 12 is provided on the box bracket 1, the first control device 12 controls the first moving device 7 and the second moving device 8 to move in a horizontal direction perpendicular to the first rotation axis 3, and a second control device 13 is provided on the second moving device 8, the second control device 13 controls the third moving device 9 to move on the connecting rod 18 along a horizontal direction parallel to the first rotation axis 3. The first moving device 7 and the second moving device 8 are directly moved by the support structure of the box support 1 itself, and the connecting rod 18 connected to the first moving device 7 and the second moving device 8 drives the laser marker 5 thereon to move in a direction perpendicular to the first rotating axis 3, without adding any additional structure, so that the whole device is more compact and light. The first moving device 7, the second moving device 8, and the third moving device 9 are devices capable of generating translational force, such as: a linear motor with a roller installed, or a ball screw structure with a roller installed, or a forward and reverse motor with a roller installed on a structural plate, etc.

[0026] Preferably, a lifting mechanism 6 is installed on the third moving device 9, and the laser marker 5 is installed on the lifting mechanism 6. The lifting mechanism 6 controls the lifting and lowering of the laser marker 5 for focusing. After different marking cylinders are placed on the first rotating shaft 3 and the second rotating shaft 4, the distance between the marking surface and the laser marker 5 will be different. The lifting mechanism 6 can control the lifting and lowering of the laser marker 5 for focusing, ensuring that the laser marker is clearly marked from the beginning.

[0027] Preferably, the rollers 14 on the first moving device 7 and the second moving device 8 each include an upper roller 20 and two lower rollers 21. The upper roller 20 of the first moving device 7 rolls above the first bracket 10, the upper roller 20 of the second moving device 8 rolls above the second bracket 11, the lower roller 21 of the first moving device 7 rolls below the first bracket 10, and the lower roller 21 of the second moving device 8 rolls below the second bracket 11. The first moving device 7 and the second moving device 8 respectively clamp the first bracket 10 and the second bracket 11 up and down through the upper roller 20 and the lower roller 21 to move, thereby ensuring the stability of the connecting rod 18, and further ensuring the stability of the laser marker 5.

[0028] Preferably, groove channels 15 are provided on the upper and lower parts of the first bracket 10 and the second bracket 11, and the rollers 14 of the first moving device 7 and the second moving device 8 respectively roll along the groove channels 15. The rollers 14 roll in the groove channels 15, so that the first moving device 7 and the second moving device 8 move strictly in the direction of the channels without slipping on both sides, further ensuring the stability of the laser marker 5.

[0029] Preferably, a first track 16 is installed just above the first bracket 10, and a second track 17 is installed just above the second bracket 11. The first track 16 and the second track 17 are of the same height. The first rotating shaft 3 and the second rotating shaft 4 are both perpendicular to the first track 16 and the second track 17. Roller support frames 19 are installed at both ends of the first rotating shaft 3 and the second rotating shaft 4, and the roller support frames 19 move on the first track 16 and the second track 17 respectively. The first rotating shaft 3 and the second rotating shaft 4 are adjusted to be separated along the first track 16 and the second track 17. Different distances between the first rotating shaft 3 and the second rotating shaft 4 can adapt to marking cylinders of different sizes. At the same time, the appropriate distance between the first rotating shaft 3 and the second rotating shaft 4 can ensure more stable rotation of the marking cylinder thereon.

[0030] Preferably, the first rotating shaft 3 and the second rotating shaft 4 are respectively sleeved with anti-skid rubber at the contacting parts with the marking cylinder, which increases the friction between the rotating shaft and the curved surface of the marking cylinder, making it difficult for the marking cylinder to slip during the marking process, thus ensuring the stability of the marking.

[0031] A marking method for a curved surface laser marking device compatible with non-perfect cylinders, comprising the following steps:

[0032] Step 1: Place the marking cylinder on the first rotating shaft 3 and the second rotating shaft 4, and the marking cylinder rotates smoothly along with the first rotating shaft 3 and the second rotating shaft 4;

[0033] Step 2: Move the laser marker 5 horizontally to the lowest part of the curved surface of the marking cylinder where marking is required by means of the translation mechanism 2;

[0034] Step 3, start the laser marker 5, and the marking surface of the marking cylinder rotates in accordance with the first rotation axis 3 and the second rotation axis 4. During the laser marking process, the distance between the bottom of the marking surface and the laser marker 5 remains unchanged until the laser marking operation is completed.

[0035] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. The protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A curved surface laser marking device compatible with non-circular cylinders, comprising a box support (1), wherein a translation mechanism (2) is installed in the box support (1), characterized in that: The translation mechanism (2) is equipped with a laser marker (5), and the translation mechanism (2) controls the laser marker (5) to move in a horizontal direction. The laser marker (5) emits laser upwards for marking. A first rotating shaft (3) and a second rotating shaft (4) parallel to each other are installed above the box support (1). The first rotating shaft (3) and the second rotating shaft (4) rotate synchronously to drive the marking cylinder thereon to rotate. The laser marker (5) is below the first rotating shaft (3) and the second rotating shaft (4).

2. According to claim 1, a curved surface laser marking device compatible with non-circular cylinders is characterized in that: The translation mechanism (2) comprises a third moving device (9) which moves along a direction parallel to the first rotation axis (3), and the laser marker (5) is connected to the third moving device (9).

3. The curved surface laser marking device compatible with non-circular cylinders according to claim 2, characterized in that: The translation mechanism (2) further comprises a first moving device (7), a second moving device (8) and a connecting rod (18); the first moving device (7) and the second moving device (8) are fixedly connected via the connecting rod (18); the connecting rod (18) is parallel to the first rotating shaft (3); the third moving device (9) is slidably connected to the connecting rod (18); the box support (1) comprises a first support (10) and a second support (11) which are parallel to each other; the first moving device (7) and the second moving device (8) both comprise rollers (14); the first moving device (7) is connected to the first rotating shaft (3) via the rollers (14); 4) moves on the first bracket (10), the second moving device (8) moves on the second bracket (11) through the roller (14), the box bracket (1) is provided with a first control device (12), the first control device (12) controls the first moving device (7) and the second moving device (8) to move along a horizontal direction perpendicular to the first rotation axis (3), the second moving device (8) is provided with a second control device (13), the second control device (13) controls the third moving device (9) to move on the connecting rod (18) along a horizontal direction parallel to the first rotation axis (3).

4. The curved surface laser marking device compatible with non-circular cylinders according to claim 1, characterized in that: The third moving device (9) is equipped with a lifting mechanism (6), the laser marker (5) is installed on the lifting mechanism (6), and the lifting mechanism (6) controls the lifting and lowering of the laser marker (5) for focusing.

5. The curved surface laser marking device compatible with non-circular cylinders according to claim 2, characterized in that: The rollers (14) on the first moving device (7) and the second moving device (8) each include an upper roller (20) and two lower rollers (21); the upper roller (20) of the first moving device (7) rolls above the first bracket (10); the upper roller (20) of the second moving device (8) rolls above the second bracket (11); the lower roller (21) of the first moving device (7) rolls below the first bracket (10); and the lower roller (21) of the second moving device (8) rolls below the second bracket (11).

6. The curved surface laser marking device compatible with non-circular cylinders according to claim 4, characterized in that: The first bracket (10) and the second bracket (11) are both provided with groove channels (15) at the top and bottom, and the rollers (14) of the first moving device (7) and the second moving device (8) roll along the groove channels (15) respectively.

7. The curved surface laser marking device compatible with non-circular cylinders according to claim 2, characterized in that: A first track (16) is installed directly above the first bracket (10), and a second track (17) is installed directly above the second bracket (11); the first track (16) and the second track (17) are at the same height; the first rotating axis (3) and the second rotating axis (4) are both perpendicular to the first track (16) and the second track (17); roller support frames (19) are installed at both ends of the first rotating axis (3) and the second rotating axis (4); and the roller support frames (19) move on the first track (16) and the second track (17) respectively.

8. The curved surface laser marking device compatible with non-circular cylinders according to claim 1, characterized in that: The parts of the first rotating shaft (3) and the second rotating shaft (4) that contact the marking column are respectively sleeved with anti-slip rubber.

9. The marking method of a curved surface laser marking device compatible with non-circular cylinders according to claim 1, characterized in that: The following steps are included: Step 1: placing the marking cylinder on the first rotating shaft (3) and the second rotating shaft (4), and the marking cylinder rotates smoothly along with the first rotating shaft (3) and the second rotating shaft (4); Step 2: Move the laser marker (5) horizontally to the lowest part of the curved surface of the marking cylinder where marking is required by means of the translation mechanism (2); Step 3: Start the laser marker (5), and the marking curved surface of the marking cylinder rotates in accordance with the first rotation axis (3) and the second rotation axis (4). During the laser marking process, the distance between the bottom of the marking curved surface and the laser marker (5) remains unchanged until the laser marking operation is completed.

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