Laser cutting equipment and double-light-path synchronous line scanning device
By using a right-angle prism with a first right-angle surface coating and a reflector group in the laser cutting equipment, the problem of poor cutting consistency in the dual-optical-path synchronous line scanning technology is solved, achieving a more efficient and precise cutting effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- WUHAN ZHITONG VISION TECHNOLOGY CO LTD
- Filing Date
- 2026-04-08
- Publication Date
- 2026-05-12
AI Technical Summary
The dual-path synchronous line scanning technology in existing laser cutting equipment suffers from poor synchronous cutting consistency.
The beam is split into two beams with directions 180 degrees apart by using a right-angle prism with a first right-angle surface coating. The beam angle deviation is reduced and the cutting consistency is improved by using an integrated reflector group and galvanometer module.
It improves the synchronous cutting consistency of laser cutting equipment, increases cutting efficiency and precision, and reduces beam energy attenuation and system control difficulty.
Smart Images
Figure CN122007668A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of optical path technology, and in particular to a laser cutting device and a dual-optical-path synchronous line scanning device. Background Technology
[0002] Dual-path synchronous line scanning technology in existing laser cutting equipment has important applications in industrial production, as it can improve cutting efficiency and accuracy through the dual-path design. However, current dual-path synchronous line scanning technology in laser cutting equipment also has some limitations, such as poor consistency in synchronous cutting. Therefore, how to improve the consistency of synchronous cutting in laser cutting equipment has become an urgent problem to be solved. Summary of the Invention
[0003] The purpose of this application is to provide a laser cutting device and a dual-optical-path synchronous line scanning device, thereby improving the consistency of synchronous cutting in the laser cutting device.
[0004] This application discloses a laser cutting device, which includes a light source module, a dual-optical-path synchronous scanning device, and a cutting platform. The light source module emits a light beam, and the dual-optical-path synchronous scanning device receives the light beam and splits it into two parallel beams for synchronous scanning on the cutting platform. The cutting platform is used to place the product to be cut. The dual-optical-path synchronous scanning device includes a first right-angled coated right-angle prism, a first reflector group, a galvanometer module, a second reflector group, and a beam parallelization conversion module. The first right-angled coated right-angle prism splits the light beam emitted by the light source module into two beams with opposite directions. The first reflector group guides the two beams with opposite directions to the galvanometer module. The galvanometer module reflects the two beams to the second reflector group, and the second reflector group guides the two beams to the beam parallelization conversion module. The beam parallelization conversion module converts the two beams into parallel beams with the same direction and illuminates the cutting platform.
[0005] Optionally, the first reflector group includes a first reflector, a second reflector, a third reflector, and a fourth reflector. The first reflector reflects one of two beams of light with opposite directions onto the fourth reflector, and the fourth reflector reflects the beam onto the galvanometer module. The second reflector reflects the other of two beams of light with opposite directions onto the third reflector, and the third reflector reflects the beam onto the galvanometer module.
[0006] Optionally, the second reflector group includes a fifth reflector, a sixth reflector, a seventh reflector, and an eighth reflector. The fifth reflector reflects one of two beams of light with opposite directions onto the seventh reflector, which then reflects the beam onto the beam parallelization module. The sixth reflector reflects the other of the two beams of light with opposite directions onto the eighth reflector, which then reflects the beam onto the beam parallelization module.
[0007] Optionally, the galvanometer module includes a double-sided galvanometer, which includes a frontal reflector and a back reflector. The frontal reflector and the back reflector are parallel, and the frontal reflector and the back reflector reflect two beams respectively.
[0008] Optionally, the beam parallel conversion module includes a second right-angle coated right-angle prism, the two right-angle faces of which face towards the seventh reflector and the eighth reflector respectively, and the inclined surface of the second right-angle coated right-angle prism faces away from the cutting platform.
[0009] Optionally, the laser cutting equipment further includes a second prism moving assembly, which is connected to the second right-angle coated right-angle prism and controls the distance between the second right-angle coated right-angle prism and the cutting platform.
[0010] Optionally, the first reflector and the third reflector are parallel, and the second reflector and the fourth reflector are parallel; or the first reflector and the second reflector are perpendicular, and the third reflector and the fourth reflector are perpendicular.
[0011] Optionally, the fifth and eighth reflectors are parallel, and the sixth and seventh reflectors are parallel; the fifth and seventh reflectors are perpendicular, and the sixth and eighth reflectors are perpendicular.
[0012] This application also discloses a dual-optical-path synchronous line scanning device, which is used in the laser cutting equipment described above. The dual-optical-path synchronous line scanning device includes a first right-angled coated right-angle prism, a first reflector group, a second reflector group, a beam parallelization conversion module, and a galvanometer module. The first right-angled coated right-angle prism is used to split the light beam emitted by the light source module into two beams with opposite directions. The first reflector group guides the two beams with opposite directions to the galvanometer module. The galvanometer module reflects the two beams to the second reflector group, and the second reflector group guides the two beams to the beam parallelization conversion module. The beam parallelization conversion module converts the two beams into parallel beams with the same direction for irradiating the cutting platform.
[0013] Compared to existing technologies that use beam splitters and dichroic mirrors for beam splitting, the laser cutting equipment of this application splits a beam emitted by the light source module using a right-angled prism with a first right-angled surface coated with a coating. The two beams split by the first right-angled prism with a coating, with their directions differing by 180 degrees, reduce the angular deviation between the two beams. Furthermore, the integrated molding structure of the first right-angled prism with a coating, with a coating, is more stable and less susceptible to angular deviations caused by factors such as vibration and temperature, thereby improving the consistency of synchronous cutting by the laser cutting equipment. Attached Figure Description
[0014] The accompanying drawings, which form part of the specification, are used to provide a further understanding of the embodiments of this application and illustrate the implementation methods of this application, together with the textual description, to explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:
[0015] Figure 1 This is a schematic diagram of a laser cutting device according to an embodiment of this application;
[0016] Figure 2 This is a schematic diagram of a second prism moving assembly according to an embodiment of this application;
[0017] Figure 3 This is a schematic diagram of a dual-optical-path synchronous line scanning device according to an embodiment of this application.
[0018] Among them, 10 is a laser cutting equipment; 20 is a light source module; 30 is a cutting platform; 40 is a product to be cut; 100 is a dual-optical-path synchronous scanning device; 110 is a first right-angled coated right-angle prism; 120 is a first reflector group; 121 is a first reflector; 122 is a second reflector; 123 is a third reflector; 124 is a fourth reflector; 130 is a galvanometer module; 131 is a double-sided galvanometer; 132 is a frontal reflector; 133 is a back reflector; 140 is a second reflector group; 145 is a fifth reflector; 146 is a sixth reflector; 147 is a seventh reflector; 148 is an eighth reflector; 150 is a beam parallelization conversion module; and 151 is a second right-angled coated right-angle prism. Detailed Implementation
[0019] It should be understood that the terminology, specific structural and functional details used herein are merely for describing particular embodiments and are representative. However, this application may be implemented in many alternative forms and should not be construed as being limited to the embodiments set forth herein.
[0020] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or implying the number of technical features indicated. Therefore, unless otherwise stated, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "multiple" means two or more. The term "comprising" and any variations thereof mean non-exclusive inclusion, where one or more other features, integers, steps, operations, units, components, and / or combinations thereof may be present or added.
[0021] In addition, terms such as “center,” “horizontal,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer” that indicate orientation or positional relationship are based on the orientation or relative positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this application and do not indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0022] Furthermore, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0023] The present application will now be described in detail with reference to the accompanying drawings and optional embodiments.
[0024] Figure 1 This is a schematic diagram of a laser cutting device according to an embodiment of this application, as shown below. Figure 1 As shown, this application discloses a laser cutting device 10, which includes a light source module 20, a dual-optical-path synchronous scanning device 100, and a cutting platform 30. The light source module 20 is used to emit a light beam, and the dual-optical-path synchronous scanning device 100 is used to receive the light beam and split the light beam into two parallel beams for synchronous scanning on the cutting platform 30. The cutting platform 30 is used to place the product 40 to be cut.
[0025] The dual-optical-path synchronous line scanning device 100 includes a first right-angled coated right-angle prism 110, a first reflector group 120, a galvanometer module 130, a second reflector group 140, and a beam parallel conversion module 150.
[0026] The first right-angle coated right-angle prism 110 splits the light beam emitted by the light source module 20 into two beams with opposite directions. The first reflector group 120 guides the two beams with opposite directions to the galvanometer module 130. The galvanometer module 130 reflects the two beams to the second reflector group 140, which in turn guides them to the beam parallel conversion module 150. The beam parallel conversion module 150 converts the two beams into parallel beams with the same direction, which then illuminate the cutting platform 30.
[0027] Figure 1 The direction indicated by the middle arrow represents the propagation direction of the light beam. It can be understood that the two right-angled surfaces of the first right-angled coated right-angled prism 110 are coated with reflective films, so that the two right-angled surfaces can reflect the light beam. For example, the angle between the two right-angled surfaces of the first right-angled coated right-angled prism 110 and the light beam emitted by the light source module 20 is 45°, so that the angle between the light beam emitted by the light source module 20 and the two beams of opposite directions split by the first right-angled coated right-angled prism 110 is 90°.
[0028] For example, in the initial state, the first right-angled coated right-angle prism 110 splits a beam emitted by the light source module 20 and then illuminates the first reflector group 120. The first reflector group 120 accurately converts the two beams, which were originally in opposite directions, into opposite directions and illuminates the galvanometer module 130. Then, the beams are reflected by the second reflector group to the beam parallel conversion module 150, which converts the two beams into parallel beams with the same direction and illuminates the cutting platform 30. When cutting the product on the cutting platform 30, the beam propagation direction can be changed by controlling the swing of the galvanometer module 130, so that it completes the scanning action on the cutting platform 30. The laser cutting equipment 10, combined with the dual-beam synchronous line scanning device 100, can complete more cutting tasks in the same amount of time compared with the traditional single-beam cutting equipment, which can significantly improve the cutting efficiency.
[0029] Compared to existing technologies that use beam splitters and dichroic mirrors for beam splitting, the laser cutting device 10 of this application splits a beam emitted by the light source module 20 using a first right-angled coated right-angled prism 110. The two beams split by the first right-angled coated right-angled prism 110 will inevitably have directions that differ by 180 degrees, reducing the angular deviation between the two beams. Furthermore, the integrated molding structure of the first right-angled coated right-angled prism 110 is more stable and less susceptible to angular deviations caused by factors such as vibration and temperature, thereby improving the consistency of synchronous cutting by the laser cutting device 10.
[0030] For example, the first reflector group 120 may include multiple reflectors. Since a larger number of reflectors leads to increased energy attenuation of the light beam, this application takes an example where the first reflector group 120 has four reflectors. Specifically:
[0031] The first reflector group 120 includes a first reflector 121, a second reflector 122, a third reflector 123, and a fourth reflector 124. The first reflector 121 reflects one of two beams of light with opposite directions onto the fourth reflector 124, and the fourth reflector 124 reflects the beam onto the galvanometer module 130. The second reflector 122 reflects the other of two beams of light with opposite directions onto the third reflector 123, and the third reflector 123 reflects the beam onto the galvanometer module 130.
[0032] For example, the second reflector group 140 may also include multiple reflectors. Since a larger number of reflectors leads to increased energy attenuation of the light beam, this application takes an example where the second reflector group 140 has four reflectors. Specifically:
[0033] The second reflector group 140 includes a fifth reflector 145, a sixth reflector 146, a seventh reflector 147, and an eighth reflector 148. The fifth reflector 145 reflects one of two beams of light with opposite directions to the seventh reflector 147, and the seventh reflector 147 reflects the beam to the beam parallel conversion module 150. The sixth reflector 146 reflects the other of two beams of light with opposite directions to the eighth reflector 148, and the eighth reflector 148 reflects the beam to the beam parallel conversion module 150.
[0034] This reflection path design allows two beams of light, originally pointing in opposite directions, to illuminate the galvanometer module 130 at a relative angle. After receiving these two beams reflected by the first reflector group 120 and the second reflector group 140, the galvanometer module 130 can control and adjust them by deflection to change the beam's illumination position and reflection angle, thereby achieving scanning and precise cutting of the product 40 to be cut. Furthermore, the use of only four reflectors in the first reflector group 120 and the second reflector group 140 reduces beam energy attenuation.
[0035] For example, the first reflector 121 and the third reflector 123 are parallel, and the second reflector 122 and the fourth reflector 124 are parallel; the first reflector 121 and the second reflector 122 are perpendicular, and the third reflector 123 and the fourth reflector 124 are perpendicular.
[0036] The fifth reflector 145 and the eighth reflector 148 are parallel, and the sixth reflector 146 and the seventh reflector 147 are parallel; the fifth reflector 145 and the seventh reflector 147 are perpendicular, and the sixth reflector 146 and the eighth reflector 148 are perpendicular.
[0037] This ensures the parallelism of the light beam between the light source module 20 and the first reflector 121, and between the light source module 20 and the second reflector 122; the parallelism of the light beam between the first reflector 121 and the fourth reflector 124, and between the second reflector 122 and the third reflector 123; the parallelism of the light beam between the fourth reflector 124 and the galvanometer module 130, and between the third reflector 123 and the galvanometer module 130; the parallelism of the light beam between the galvanometer module 130 and the fifth reflector 145, and between the galvanometer module 130 and the sixth reflector 146; the parallelism of the light beam between the fifth reflector 145 and the seventh reflector 147, and between the sixth reflector 146 and the eighth reflector 148; and the parallelism of the light beam between the seventh reflector 147 and the beam parallelism conversion module 150, and between the eighth reflector 148 and the beam parallelism conversion module 150. This ensures the consistency of the two beams scanning on the cutting platform 30.
[0038] For example, the galvanometer module 130 can use two independent galvanometers to control the two beams, and the deflection of the two independent galvanometers can be kept consistent during control.
[0039] For example, the galvanometer module 130 of this application includes a double-sided galvanometer 131, which includes a frontal reflector 132 and a back reflector 133. The frontal reflector 132 and the back reflector 133 are parallel, and the frontal reflector 132 and the back reflector 133 reflect two beams of light respectively.
[0040] Compared to the scheme of using two independent galvanometers, this application can ensure the consistency of the two beams after reflection by the galvanometer module 130 by setting a double-sided galvanometer 131. Moreover, it does not require synchronous control of two independent galvanometers, which reduces the control difficulty and simplifies the system design.
[0041] For example, the beam parallelization module 150 can use devices such as fiber optic couplers and beam combiners.
[0042] For example, the beam parallel conversion module 150 of this application includes a second right-angle coated right-angle prism 151, the two right-angle faces of the second right-angle coated right-angle prism 151 facing the seventh reflector 147 and the eighth reflector 148 respectively, and the inclined surface of the second right-angle coated right-angle prism 151 facing away from the cutting platform 30.
[0043] It is understandable that the two right-angled surfaces of the second right-angled coated right-angled prism 151 are coated with reflective films, so that the two right-angled surfaces can reflect light beams.
[0044] Compared with the existing technology that uses fiber couplers and beam combiners, this application reduces the energy loss of the laser cutting equipment 10 beam by setting the second right-angle coated right-angle prism 151 without generating fiber coupling loss, and simplifies the overall optical path design.
[0045] Figure 2 This is a schematic diagram of a second prism moving assembly according to an embodiment of this application, as shown below. Figure 2 As shown, the laser cutting equipment 10 also includes a second prism moving assembly, which is connected to the second right-angle coated right-angle prism 151 and controls the distance between the second right-angle coated right-angle prism 151 and the cutting platform 30.
[0046] The distance between the second right-angle coated right-angle prism 151 and the cutting platform 30 is controlled by the second prism moving assembly, thereby adjusting the distance between parallel beams of light illuminating the cutting platform 30 in the same direction. For example, increasing the distance between the second right-angle coated right-angle prism 151 and the cutting platform 30 can reduce the distance between the parallel beams; decreasing the distance between the second right-angle coated right-angle prism 151 and the cutting platform 30 can increase the distance between the parallel beams.
[0047] An exemplary second prism moving assembly can employ a high-precision lead screw and nut transmission structure. The lead screw is driven by a high-precision stepper motor, which can precisely control the rotation angle and number of turns of the lead screw. Alternatively, a high-precision linear guide combined with an electric actuator can be used. The linear guide provides high-precision guidance for the movement of the second right-angle coated right-angle prism 151, ensuring the straightness of its movement. The electric actuator, as a power source, can achieve precise control of its extension length through precise current control, and no limitations are imposed here.
[0048] Figure 3 This is a schematic diagram of a dual-optical-path synchronous line scanning device according to an embodiment of this application, as shown below. Figure 3As shown, this application discloses a dual-optical-path synchronous line scanning device 100, which is used in a laser cutting device 10. The dual-optical-path synchronous line scanning device 100 includes a first right-angled coated right-angle prism 110, a first reflector group 120, a second reflector group 140, a beam parallel conversion module 150, and a galvanometer module 130. The first right-angled coated right-angle prism 110 is used to split the light beam emitted by the light source module 20 into two beams with opposite directions. The first reflector group 120 guides the two beams with opposite directions to the galvanometer module 130. The galvanometer module 130 reflects the two beams to the second reflector group 140, and the second reflector group 140 guides the two beams to the beam parallel conversion module 150. The beam parallel conversion module 150 converts the two beams into parallel beams with the same direction for irradiating the cutting platform 30.
[0049] Compared to the method of using beam splitters and dichroic mirrors for beam splitting, the laser cutting equipment 10 of this application splits a beam emitted by the light source module 20 through a first right-angled coated right-angle prism 110. The two beams split by the first right-angled coated right-angle prism 110 will inevitably have directions that differ by 180 degrees, reducing the angular deviation between the two beams. Moreover, the integrated molding structure of the first right-angled coated right-angle prism 110 is more stable and less susceptible to angular deviation between the two beams due to factors such as vibration and temperature. Thus, the laser cutting equipment 10 using the dual-optical-path synchronous line scanning device 100 can improve the consistency of synchronous cutting.
[0050] It should be noted that the inventive concept of this application can form many embodiments, but due to the limited space of the application documents, they cannot all be listed. Therefore, without conflict, the embodiments described above or the technical features can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effect will be enhanced.
[0051] The above description, in conjunction with specific optional embodiments, provides a further detailed explanation of this application and should not be construed as limiting the specific implementation of this application to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this application, and all such modifications or substitutions should be considered within the scope of protection of this application.
Claims
1. A laser cutting device, characterized in that, The laser cutting equipment includes a light source module, a dual-path synchronous scanning device, and a cutting platform. The light source module emits a laser beam, and the dual-path synchronous scanning device receives the laser beam and splits it into two parallel beams for synchronous scanning on the cutting platform. The cutting platform is used to place the product to be cut. The dual-path synchronous scanning device includes a first right-angle coated right-angle prism, a first reflector group, a galvanometer module, a second reflector group, and a beam parallelization conversion module. The first right-angle coated right-angle prism splits the light beam emitted by the light source module into two beams with opposite directions. The first reflector group guides the two beams with opposite directions to the galvanometer module. The galvanometer module reflects the two beams to the second reflector group, and the second reflector group guides the two beams to the beam parallel conversion module. The beam parallel conversion module converts the two beams into parallel beams with the same direction, which then illuminate the cutting platform.
2. The laser cutting equipment according to claim 1, characterized in that, The first reflector group includes a first reflector, a second reflector, a third reflector, and a fourth reflector. The first reflector reflects one of two beams of light with opposite directions onto the fourth reflector, and the fourth reflector reflects the beam onto the galvanometer module. The second reflector reflects the other of two beams of light with opposite directions onto the third reflector, and the third reflector reflects the beam onto the galvanometer module.
3. The laser cutting equipment according to claim 2, characterized in that, The second reflector group includes a fifth reflector, a sixth reflector, a seventh reflector, and an eighth reflector. The fifth reflector reflects one of two beams of light with opposite directions onto the seventh reflector, which then reflects the beam onto the beam parallelization module. The sixth reflector reflects the other of two beams of light with opposite directions onto the eighth reflector, which then reflects the beam onto the beam parallelization module.
4. The laser cutting equipment according to claim 3, characterized in that, The galvanometer module includes a double-sided galvanometer, which includes a frontal reflector and a back reflector. The frontal reflector and the back reflector are parallel, and the frontal reflector and the back reflector reflect two beams of light respectively.
5. The laser cutting equipment according to claim 4, characterized in that, The beam parallel conversion module includes a second right-angle coated right-angle prism, the two right-angle faces of which face towards the seventh reflector and the eighth reflector respectively, and the inclined surface of the second right-angle coated right-angle prism faces away from the cutting platform.
6. The laser cutting equipment according to claim 5, characterized in that, The laser cutting equipment also includes a second prism moving assembly, which is connected to the second right-angle coated right-angle prism and controls the distance between the second right-angle coated right-angle prism and the cutting platform.
7. The laser cutting equipment according to claim 2, characterized in that, The first and third reflectors are parallel, and the second and fourth reflectors are parallel; the first and second reflectors are perpendicular, and the third and fourth reflectors are perpendicular.
8. The laser cutting equipment according to claim 3, characterized in that, The fifth and eighth reflectors are parallel, and the sixth and seventh reflectors are parallel; the fifth and seventh reflectors are perpendicular, and the sixth and eighth reflectors are perpendicular.
9. A dual-optical-path synchronous line scanning device, characterized in that, The dual-optical-path synchronous line scanning device is used in the laser cutting equipment as described in any one of claims 1-8. The dual-optical-path synchronous line scanning device includes a first right-angled coated right-angle prism, a first reflector group, a second reflector group, a beam parallelization conversion module, and a galvanometer module. The first right-angled coated right-angle prism is used to split the light beam emitted by the light source module into two beams with opposite directions. The first reflector group guides the two beams with opposite directions to the galvanometer module. The galvanometer module reflects the two beams to the second reflector group, respectively. The second reflector group guides the two beams to the beam parallelization conversion module. The beam parallelization conversion module converts the two beams into parallel beams with the same direction for irradiating the cutting platform.