Laser processing preview device and laser processing device

Abstract

The utility model discloses a laser processing preview device and a laser processing device, and relates to the technical field of laser processing, the laser processing preview device is used for previewing a processing light beam emitted by a processing light source part towards a processing platform, and the laser processing preview device comprises a base, a reflection device and a preview light source part; the base is used for being arranged between a machining platform and a machining light source piece. The reflecting device comprises a reflecting mirror movably installed on the base, the reflecting mirror has an avoiding position and a preview position in the moving stroke of the reflecting mirror, when the reflecting mirror is located at the avoiding position, the reflecting mirror is used for being staggered from the machining light beam, when the reflecting mirror is located at the preview position, the reflecting mirror is located on the light path of the machining light beam, and the reflecting face of the reflecting mirror is opposite to the machining light source part. A preview light beam emitted by the preview light source piece passes through the reflecting mirror at the preview position and then is partially overlapped with a light path where the processing light beam is located; according to the technical scheme provided by the utility model, the laser processing effect can be previewed, and the energy loss of processing is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of laser processing, in particular to a laser processing preview device and a laser processing device. Background Art

[0002] Wallpaper and fabric carving uses processes such as cutting, stamping, etching, pressing, and burning to create regular patterns on the surface of the fabric. This creates a rich pattern and design, meeting the needs of fabric applications in the clothing, home textile, and decoration industries. Compared to printing and embroidery, carving combines layering and delicacy, making it a popular method for high-end wallpaper and fabric processing. However, carving through cutting, stamping, or etching is complex, expensive, and time-consuming. Compared to these three processes, laser printing, as an emerging wallpaper and fabric carving process, offers the greatest advantages of a simple process, no additional costs, easy proofing, no order size requirements, a wide range of materials, and low production environment requirements.

[0003] During laser processing, visible light lasers are needed to locate the processing range and preview the results, which can improve positioning accuracy and save materials. However, most laser processing devices currently on the market use processing light sources that emit the processing beam directly toward the processing platform, lacking the visible light laser positioning preview function. Or, even if positioning preview functions are available, the processing laser will generate significant energy losses as it passes through related components. Therefore, how to implement processing preview in laser processing equipment and reduce processing laser energy losses has become a pressing issue for those skilled in the art. Utility Model Content

[0004] The main purpose of the utility model is to provide a laser processing preview device, which aims to realize the processing preview of the laser processing device and reduce the energy loss of the processing laser.

[0005] To achieve the above-mentioned purpose, the laser processing preview device proposed in the present invention is used to preview the processing light beam emitted by the processing light source component toward the processing platform. The laser processing preview device includes a base, a reflecting device and a preview light source component; the base is used to be arranged between the processing platform and the processing light source component; the reflecting device includes a reflecting mirror, which is movably installed on the base so as to have an avoidance position and a preview position in its movable stroke. When in the avoidance position, the reflecting mirror is used to be staggered with the processing light beam. When in the preview position, the reflecting mirror is used to be in the optical path of the processing light beam, and the reflecting surface of the reflecting mirror is facing away from the processing light source component; the preview light source component is used to be located on the side of the reflecting mirror facing away from the processing light source component when the reflecting mirror is in the preview position. When the reflecting mirror is in the preview position, the preview light beam emitted by the preview light source component passes through the reflecting mirror in the preview position and overlaps with the optical path portion where the processing light beam is located.

[0006] In one embodiment, the reflecting device also includes a swing arm and a driving member connected to the swing arm; the swing arm is rotatably mounted on the base along a rotating axis extending in a first horizontal direction, and a reflector is fixedly mounted on the swing arm. When the swing arm is rotated to a vertical setting, the reflector is in a preview position so that the preview light beam is reflected to extend in a horizontal direction. When the swing arm is rotated to a second horizontal direction, the reflector is in an avoidance position.

[0007] In one embodiment, the preview assembly further includes a sensing device, the sensing device including a first switch, a second switch, and a shielding member; the first switch is mounted on the base; the second switch is mounted on the base with an interval along the second horizontal direction between the first switch and the first switch; the shielding member is fixedly mounted on the swing arm, and when the swing arm is rotated to a vertical position, the shielding member shields the first switch; when the swing arm is rotated to a second horizontal position, the shielding member shields the second switch; wherein, when the shielding member shields the first switch, the first switch generates a sensing signal, and when the shielding member shields the second switch, the second switch generates a sensing signal.

[0008] In one embodiment, the swing arm has a first end and a second end that are arranged opposite to each other, the first end and the second end of the swing arm are respectively installed with a reflector and a shielding member, and the rotation axis of the swing arm is arranged between the first end and the second end of the swing arm.

[0009] In one embodiment, the first switch and the second switch are movably disposed on the base along the second horizontal direction.

[0010] In one embodiment, the first switch and the second switch are photoelectric switches, and the shielding member is a shielding plate to shield the light beam emitted by the emitter of the first switch or the second switch.

[0011] In one embodiment, when the reflecting device is located at the preview position, the incident angle of the preview light beam when reflected by the reflecting mirror is α, and 40°≤α≤50°.

[0012] In one embodiment, the preview light beam emitted by the preview light source is visible light.

[0013] In one embodiment, the wavelength of the preview light beam is λ, 620 nm ≤ λ ≤ 700 nm.

[0014] The present utility model also proposes a laser processing device, which includes a processing platform for placing a product to be processed, a laser processing preview device as described above, and a processing light source component; the laser processing preview device and the processing platform are arranged horizontally spaced apart, and the preview light beam can reach the processing position of the product to be processed after being reflected by a reflector; the processing light source component emits a processing light beam, which passes through the laser processing preview device and can reach the processing position of the product to be processed.

[0015] The technical solution of the present utility model is used to preview the processing light beam emitted by the processing light source component toward the processing platform. The preview light beam is emitted by the preview light source component, and is reflected by the reflector at the preview position to overlap with the optical path portion where the processing light beam is located, and then reaches the processing platform to display the processing effect on the processing platform, thereby previewing the effect of laser processing, thereby improving positioning accuracy and saving materials. After the preview is completed, the reflector moves to an avoidance position staggered from the processing light beam, and the processing light beam directly reaches the processing platform for processing, reducing the energy loss of the processing light beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0017] Figure 1 This is an axonometric diagram of an embodiment of the laser processing preview device provided by the present invention;

[0018] Figure 2 for Figure 1 A front view schematic diagram of the laser processing preview device;

[0019] Figure 3 for Figure 1 Schematic top view of the laser processing preview device.

[0020] Description of Figure Numbers:

[0021] 100. Laser processing preview device; 1. Base; 2. Reflection device; 21. Reflector; 22. Swing arm; 23. Driving element; 3. Sensing device; 31. First switch; 32. Second switch; 33. Shielding element; 4. Preview light source element;

[0022] A. Processing beam; B. Preview beam.

[0023] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0025] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0027] During laser processing, visible light lasers are needed to locate the processing range and preview the results. This can improve positioning accuracy and save materials. However, most laser processing devices currently on the market emit a processing light beam directly toward the processing platform and lack the positioning preview function of visible light lasers.

[0028] In the related art, a beam combiner is used to combine the visible light laser and the processing light beam for preview. However, the beam combiner generates severe heat during use, and the energy of the processing laser decreases after passing through the beam combiner, resulting in a loss in processing effect and efficiency.

[0029] Based on this, the utility model proposes a laser processing device, which aims to achieve laser processing preview while reducing the energy loss of the processing laser.

[0030] See also Figure 1The laser processing device includes a processing platform for placing the product to be processed, a processing light source, and a laser processing preview device 100. The laser processing preview device 100 is spaced horizontally from the processing platform. A preview beam B is reflected by a reflector 21 and reaches the processing position of the product to be processed. The processing light source emits a processing beam A, which passes through the laser processing preview device 100 and reaches the processing position of the product to be processed. During laser processing, the product to be processed is placed on the processing platform. The laser processing preview device 100 first emits preview beam B for previewing. After the preview is complete, the processing light source emits processing beam A to process the product to be processed.

[0031] See also Figure 1 In one embodiment of the present invention, a laser processing preview device 100 includes a base 1, a reflecting device 2, and a preview light source 4; the base 1 is used to be arranged between the processing platform and the processing light source; the reflecting device 2 includes a reflecting mirror 21, which is movably mounted on the base 1 so as to have an avoidance position and a preview position in its movable range. When in the avoidance position, the reflecting mirror 21 is used to stagger with the processing light beam A. When in the preview position, the reflecting mirror 21 is used to be in the optical path of the processing light beam A, and the reflecting surface of the reflecting mirror 21 is facing away from the processing light source; the preview light source 4 is used to be located on the side of the reflecting mirror 21 facing away from the processing light source when the reflecting mirror 21 is in the preview position. When the reflecting mirror 21 is in the preview position, the preview light beam B emitted by the preview light source 4 passes through the reflecting mirror 21 in the preview position and overlaps with the optical path of the processing light beam A.

[0032] The technical solution of the present invention is to emit a preview light beam B through the preview light source 4, and use the reflector 21 in the preview position to reflect the preview light beam B to overlap with the optical path portion where the processing light beam A is located, and then reach the processing platform to display the processing image on the processing platform. The processing image coincides with the actual processing position, so as to preview the effect of laser processing, thereby improving positioning accuracy and saving materials. After the preview is completed, the reflector 21 moves to an avoidance position staggered from the processing light beam A, and the processing light beam A directly reaches the processing platform for processing, reducing the energy loss of the processing light beam A.

[0033] It is understandable that the specific installation method of the reflector 21 is not limited. It can be moved in a certain direction or rotated along an axis extending in a certain direction, as long as the reflector 21 has a movable range including an avoidance position and a preview position.

[0034] It should be noted that the timing when the preview light source component 4 emits the preview light beam B is different from the timing when the processing light source component emits the processing light beam A. In order to indicate the positional relationship among the preview light source component 4, the reflector 21 and the processing light source component, the optical path is defined as the propagation path of the light beam, and this path does not disappear when the light beam is turned off. The optical path of the preview light beam B before it is reflected by the reflector 21 is the incident optical path, and the optical path of the light beam after it is reflected by the reflector 21 is the reflected optical path.

[0035] Specifically, as an implementation mode in which the preview light beam B emitted by the preview light source component 4 partially overlaps with the optical path of the processing light beam A after passing through the reflector 21 at the preview position, the emission angle of the preview light beam B of the preview light source component 4 and the position of the reflector 21 meet the following conditions: the extension path of the incident light path emitted by it intersects with the optical path of the processing light beam A; when the preview position of the reflector 21 is located at the intersection of the incident light path and the optical path of the processing light beam A, and the preview light source component 4 and the processing light source component are located on the same side of the normal of the reflector 21, the incident angle between the incident light path and the reflector 21 is the same as the angle between the optical path of the processing light beam A and the reflector 21. In another embodiment, a prism group or lens system is provided for calibration. When the preview position of the reflector 21 has not moved to the intersection of the incident light path and the light path of the processing beam A, if it is found during trial operation that there is a certain distance between the displayed image of the preview beam B and the processing beam A, the prism is used for calibration at this time, so that the light path of the preview beam B after passing through the prism is close to the processing beam A and overlaps with a part of the light path of the processing beam A, and the displayed image of the preview beam B moves toward the actual processing position of the processing beam A and overlaps with it.

[0036] See also Figure 1 and Figure 2 In one embodiment of the present invention, the reflector 2 further includes a swing arm 22 and a driver 23 rotatably connected to the swing arm 22. The swing arm 22 is rotatably mounted on the base 1 along a rotation axis extending in a first horizontal direction. A reflector 21 is fixedly mounted on the swing arm 22. When the swing arm 22 is rotated to a vertical position, the reflector 21 is in a preview position, thereby reflecting the preview beam B to extend in a horizontal direction. When the swing arm 22 is rotated to a second horizontal position, the reflector 21 is in a avoidance position. This arrangement, by rotatably mounting the reflector 21 on the base 1 via the swing arm 22 and the driver 23, saves space and reduces interference with the processing beam A caused by the reflector 21.

[0037] Specifically, the driving member 23 is a stepping motor, and the rotation angle of the motor can be precisely controlled by the stepping motor.

[0038] Furthermore, the rotation axis of the swing arm 22 is perpendicular to the reflective surface of the reflector 21 , so that the reflector 21 does not tilt relative to the preview light source 4 during the rotation process, thereby reducing the error caused by the movement of the reflector.

[0039] In one embodiment of the present invention, the preview assembly further includes a sensing device 3, comprising a first switch 31, a second switch 32, and a shielding member 33. The first switch 31 is mounted on the base 1; the second switch 32 is mounted on the base 1 spaced apart from the first switch 31 along a second horizontal direction. The shielding member 33 is fixedly mounted on the swing arm 22. When the swing arm 22 rotates to a vertical position, the shielding member 33 shields the first switch 31. When the swing arm 22 rotates to a second horizontal position, the shielding member 33 shields the second switch 32. When the shielding member 33 shields the first switch 31, the first switch 31 generates a sensing signal, and when the shielding member 33 shields the second switch 32, the second switch 32 generates a sensing signal. With this arrangement, the position of the reflector 21 is determined by the sensing device 3, achieving automatic control and improving efficiency.

[0040] Specifically, the photoelectric control system receives the sensing signals of the first switch and the second switch 32 and controls the preview light source 4 and the processing light source. When the laser processing preview device 100 needs to perform a processing preview on the product to be processed, the processing light source does not emit light, the driving component 23 drives the swing arm 22 to rotate to the preview position, the shielding component 33 generates a corresponding sensing signal at the first switch 31 and transmits it to the photoelectric control system. The photoelectric control system determines that the swing arm 22 is in the preview position and controls the preview light source 4 to emit a preview beam B. The preview beam B is reflected by the reflector 21 and displays the processing range and effect on the product to be processed. After determining that the preview effect is good and the product to be processed needs to be processed, the driving component 23 drives the movable swing arm 22 to rotate to the avoidance position. The shielding component 33 generates a corresponding sensing signal at the second switch 32 and transmits it to the photoelectric control system. The photoelectric control system determines that the swing arm 22 is in the avoidance position and controls the processing light source to emit a processing beam A to process the processing material.

[0041] It should be noted that the types of the first switch 31 and the second switch 32 are not limited and may be photoelectric switches, proximity switches, magnetic switches, etc. Accordingly, the shielding member 33 can adapt to the first switch 31 and the second switch 32 to generate an induction signal.

[0042] In one embodiment of the present invention, the swing arm 22 has a first end and a second end disposed opposite each other. The reflector 21 and the shield 33 are mounted on the first and second ends of the swing arm 22, respectively. The rotation axis of the swing arm 22 is disposed between the first and second ends of the swing arm 22. Positioning the rotation axis of the swing arm 22 in the middle and the reflector 21 and shield 33 at both ends of the swing arm 22 improves rotational stability and reduces preview errors of the preview beam B.

[0043] In one embodiment of the present invention, the first switch 31 and the second switch 32 are movably disposed on the base 1 along the second horizontal direction. With such a configuration, the distance between the first switch 31 and the second switch 32 can be adjusted.

[0044] In one embodiment of the present invention, the first switch 31 and the second switch 32 are photoelectric switches, and the shielding member 33 is a shielding piece to block the light beam emitted by the emitter of the first switch 31 or the second switch 32. Photoelectric switches have a fast response time and a low false alarm rate, which can improve production efficiency.

[0045] See also Figure 3 In one embodiment of the present invention, when the reflector 2 is in the preview position, the incident angle of the preview beam B reflected by the reflector 21 is α, where 40°≤α≤50°. This angle arrangement of the laser processing preview device 100 provides good space utilization and can accommodate most processing preview requirements.

[0046] Specifically, α is equal to 45°, so that the preview beam B is deflected by 90°. This configuration makes the processing beam A and the preview beam B form an angle of 90°, which can avoid interference of the preview light source 4 with the processing beam A.

[0047] In one embodiment of the present invention, the preview light beam B emitted by the preview light source is visible light, so that the operator can preview the processing effect directly with the naked eye.

[0048] In one embodiment of the present invention, the wavelength of the preview light beam B is λ, 620nm≤λ≤700nm. The preview light beam B is red visible light, which makes the preview effect clearer.

[0049] When performing laser processing, the processing steps of an embodiment of the laser processing device provided by the present invention are as follows:

[0050] Step 1: Preview. The servo motor is controlled to rotate the reflector 21 to the preview position. At this time, the blocking member 33 blocks the first switch 31. The first switch 31 generates a sensing signal and transmits the sensing signal to the photoelectric control system. The photoelectric control system determines that the swing arm 22 is in the preview position, controls the processing light source component to not emit light, and controls the preview light source component 4 to emit light. The preview light beam B is reflected by the reflector 21 and reaches the processing position of the product to be processed, forming a preview image on the product to be processed.

[0051] The second step is processing. After the preview is completed, the servo motor rotates the reflector 21 to the avoidance position. At this time, the blocking member 33 blocks the second switch 32. The second switch 32 generates a sensing signal and transmits the sensing signal to the photoelectric control system. The photoelectric control system determines that the swing arm 22 is in the avoidance position and controls the processing light source to emit light. The processing light beam A directly reaches the processing position of the product to be processed and processes the product to be processed.

[0052] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A laser processing preview device for previewing a processing light beam emitted by a processing light source toward a processing platform, characterized in that: The laser processing preview device includes: A base, used for being arranged between the processing platform and the processing light source component; a reflecting device, comprising a reflecting mirror, the reflecting mirror being movably mounted on the base so as to have an avoidance position and a preview position in its movable range, wherein when in the avoidance position, the reflecting mirror is configured to be offset from the processing light beam, and when in the preview position, the reflecting mirror is configured to be in the optical path of the processing light beam, with the reflecting surface of the reflecting mirror facing away from the processing light source; and The preview light source component is used to be located on the side of the reflector facing away from the processing light source component when the reflector is in the preview position. When the reflector is in the preview position, the preview light beam emitted by the preview light source component passes through the reflector in the preview position and coincides with the optical path portion of the processing light beam.

2. The laser processing preview device according to claim 1, wherein: The reflecting device further comprises: a swing arm, rotatably mounted on the base along a rotation axis extending in a first horizontal direction, the reflector being fixedly mounted on the swing arm; when the swing arm is rotated to a vertical position, the reflector is in a preview position so that the preview light beam is reflected to extend in a horizontal direction; and when the swing arm is rotated to a second horizontal position, the reflector is in a avoidance position; and A driving member drives and connects the swing arm.

3. The laser processing preview device according to claim 2, wherein: The preview component further includes a sensing device, which includes: a first switch, mounted on the base; A second switch is installed on the base at a distance from the first switch along a second horizontal direction; and a shielding member fixedly mounted on the swing arm, wherein when the swing arm is rotated to be in a vertical orientation, the shielding member shields the first switch, and when the swing arm is rotated to be in a second horizontal orientation, the shielding member shields the second switch; When the shielding member shields the first switch, the first switch generates an induction signal; when the shielding member shields the second switch, the second switch generates an induction signal.

4. The laser processing preview device according to claim 3, wherein: The swing arm has a first end and a second end that are arranged opposite to each other. The first end and the second end of the swing arm are respectively mounted with the reflector and the shielding member. The rotating shaft of the swing arm is arranged between the first end and the second end of the swing arm.

5. The laser processing preview device according to claim 3, wherein: The first switch and the second switch are movably arranged on the base along a second horizontal direction.

6. The laser processing preview device according to claim 3, wherein: The first switch and the second switch are photoelectric switches, and the shielding member is a shielding piece to shield the light beam emitted by the emitter of the first switch or the second switch.

7. The laser processing preview device according to claim 1, wherein: When the reflecting device is located at the preview position, the incident angle of the preview light beam when reflected by the reflecting mirror is α, and 40°≤α≤50°.

8. The laser processing preview device according to claim 1, wherein: The preview light beam emitted by the preview light source is visible light.

9. The laser processing preview device according to claim 8, wherein: The wavelength of the preview light beam is λ, 620nm≤λ≤700nm.

10. A laser processing device, characterized in that: include: Processing platform, used to place products to be processed; The laser processing preview device according to any one of claims 1 to 9 is arranged horizontally spaced from the processing platform, and the preview beam can reach the processing position of the product to be processed after being reflected by the reflector; and The processing light source component emits a processing light beam, which passes through the laser processing preview device and can reach the processing position of the product to be processed.

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