Swing light splitting type laser cutting system

Abstract

The invention discloses a swing light splitting type laser cutting system, and aims to provide the swing light splitting type laser cutting system which can cut cloth on a plurality of stations on an embroidery machine simultaneously by using a single laser under the condition that the power of the laser is not increased, so that the manufacturing cost is reduced. The device comprises a laser, a light splitting device and at least two focusing lenses, and the light splitting device comprises dimming units which are in one-to-one correspondence with the focusing lenses and comprise upper lenses; the upper lenses of the dimming units are located above the swing mirror, laser of the laser device is emitted to the swing mirror, the swing mirror swings in a reciprocating mode to sequentially reflect the laser to the upper lenses of the dimming units, and the laser is reflected to the corresponding focus lenses through the upper lenses; the driving mechanism is used for driving the swinging mirror to swing back and forth at a set frequency H, so that the focusing mirrors can cut the cloth on the embroidery machine at the same time when the laser works.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cutting devices, and in particular to a swing-beam splitting laser cutting system applied to an embroidery machine. Background Art

[0002] Laser cutting is widely used in embroidery machines because it avoids contact with the fabric, eliminates blade wear, and offers burr-free, dimensionally accurate, and minimal error. Embroidery machines often require cutting fabric at two or more stations. Current embroidery machines typically employ two or more lasers, each cutting a single station's worth of fabric. This approach consumes a large number of lasers, increasing the cost of the machine.

[0003] In order to solve the above problems, some embroidery machines currently use a mobile laser, that is, a laser moves back and forth between two or more stations to cut the fabrics at two or more stations. Although this method can effectively reduce the amount of laser used, thereby reducing the production cost of the embroidery machine; however, the laser movement efficiency is not high, especially when the distance between the two cutting stations is large, which will affect the cutting efficiency of the fabrics at the two stations; and the fabric cutting at each station can only be carried out sequentially at different times, and it is impossible to cut the fabrics at multiple stations at the same time.

[0004] Furthermore, in order to solve the problems existing in mobile lasers, some inventors have made symmetrical improvements. For example, the Chinese patent publication number CN 111843242 A, the name of the invention is double-head laser cutting machine, which includes a laser, a beam splitter, a first cutting galvanometer and a second cutting galvanometer. The beam splitter divides a beam of laser emitted by the laser into two beams of laser light and transmits them to the first cutting galvanometer and the second cutting galvanometer respectively, so that the beam of light emitted by the laser can be divided into two beams by the beam splitter for cutting. This application uses a beam splitter to divide a beam of light into two beams for cutting. Although multiple stations of fabric can be cut simultaneously by one laser, it requires increasing the power of the laser (increased to twice or more times the original power), which also increases the production cost of the embroidery machine. Specifically, Current beam splitters consist of input and output slits, mirrors, and dispersive elements. While they can split a single beam of incident light into two or more beams, the sum of the powers of the individual beams produced by the beam splitter is the same as the power of the incident light. For example, a 30W laser emits a 30W laser beam, which is then split into two beams by a beam splitter. Each beam then has a power of 15W (the power of each laser beam produced by the beam splitter is reduced by half). If a 30W laser is required for fabric cutting, using a beam splitter to split the incident light into two beams would require increasing the laser power from 30W to 60W, increasing production costs. Summary of the Invention

[0005] The purpose of the present invention is to provide a swinging spectroscopic laser cutting system that can use a single laser to cut fabrics at multiple stations on an embroidery machine simultaneously without increasing the laser power, thereby reducing the production cost.

[0006] The technical solution of the present invention is: A swing-beam splitting laser cutting system includes a laser, a beam splitting device, and at least two focusing mirrors. The beam splitting device includes: A dimming unit corresponding to the focusing lens one by one, including an upper lens; The upper lens of each dimming unit is located above the swing mirror. The laser light from the laser is projected onto the swing mirror. The swing mirror swings back and forth to reflect the laser light to the upper lens of each dimming unit in turn, and then reflects it to the corresponding focusing lens through the upper lens. The driving mechanism drives the oscillating mirror to oscillate back and forth at a set frequency H, so that when the laser is working, each focusing mirror can cut the fabric on the embroidery machine at the same time.

[0007] This oscillating beam splitting laser cutting system uses an oscillating mirror to sequentially reflect a laser beam emitted by a laser onto the upper lens of each dimming unit. The upper lens then reflects the laser beam onto the corresponding focusing lens (where the laser is focused by the focusing lens, forming a laser spot on the fabric). Simultaneously, the oscillating mirror oscillates at a set frequency, H, causing each focusing lens to produce an intermittent laser spot with a set frequency, H. The laser spot has a specific diameter (typically 0.1-0.5 mm). For example, each focusing lens produces H laser spots per second. This allows the intermittent laser spots projected by the focusing mirrors to interlock with each other when cutting fabric on an embroidery machine by controlling the fabric's movement speed, achieving continuous cutting. Each focusing mirror can cut fabric at a specific station, and the lasers from each focusing mirror can simultaneously cut fabric on the machine.

[0008] At the same time, due to the arrangement of the dimming units, the upper lenses of each dimming unit are clustered and arranged above the oscillating mirror. This allows the oscillating mirror to swing at a smaller angle each time, reflecting the laser light emitted by the laser sequentially to the upper lenses of each dimming unit, and then through the upper lenses to the corresponding focusing mirror. Based on this, this solution can effectively reduce the angle of each oscillation of the oscillating mirror, thereby facilitating an increase in the oscillation frequency of the oscillating mirror, lowering the performance requirements of the drive mechanism, and further reducing the difficulty and cost of production.

[0009] On the other hand, since the oscillating spectroscopic laser cutting system of this scheme reflects a beam of laser emitted by the laser to each focusing mirror in sequence through an oscillating mirror, each focusing mirror generates an intermittent laser spot with a set frequency of H, the laser power entering each focusing mirror each time will be consistent with the laser power emitted by the laser. Therefore, without increasing the laser power, a single laser can be used to cut fabrics at multiple workstations on the embroidery machine at the same time, thereby reducing production costs.

[0010] Preferably, the system further includes a light guide unit corresponding to each of the light modulating units. The light guide unit includes at least one reflector. The oscillating mirror reflects the laser light from the upper lens of each light modulating unit, which is then reflected by the reflector of the corresponding light guide unit to the corresponding focusing lens for focusing. In this way, the path of the laser light can be adjusted by the reflector of the light guide unit, and the position of the focusing lens and cutting part can be adjusted to meet different cutting needs.

[0011] Preferably, two focusing lenses and two light guide units are used, with the upper lens of each dimming unit located between the two light guide units. This solution can cut fabric at two workstations on an embroidery machine. Furthermore, the upper lens of the dimming unit can be placed between the two light guide units to accommodate actual production layout needs.

[0012] Preferably, the light guide unit further includes a protective tube, which is arranged along the laser path within the corresponding light guide unit. In this way, the laser light incident on the light guide unit will be transmitted within the corresponding protective tube, thereby effectively preventing objects or personnel from coming into contact with the laser light, thereby protecting the objects and the operator.

[0013] Preferably, the upper mirrors of each dimming unit are close together, and the swing mirror swings at an angle C, with a value of C ranging from 2 to 40 degrees. Due to the dimming unit configuration, the upper mirrors of each dimming unit are clustered and arranged above the swing mirror. Thus, each swing of the swing mirror at a relatively small angle C (set to an angle between 2 and 40 degrees as needed) can sequentially reflect the laser light emitted by the laser to the upper mirrors of each dimming unit, and then through the upper mirrors to the corresponding focusing mirror. Based on this, this solution can effectively reduce the angle of each swing of the swing mirror, thereby facilitating an increase in the swing mirror's swing frequency, lowering the performance requirements for the drive mechanism, and further reducing manufacturing difficulty and cost.

[0014] Preferably, the dimming unit is located below the laser, and the laser light of the laser is incident on the swing mirror from top to bottom, so as to facilitate the arrangement of the laser and the swing mirror on the embroidery machine.

[0015] A swing-beam splitting laser cutting system includes a laser, a beam splitting device, and at least two focusing mirrors. The beam splitting device includes: A dimming unit corresponding to the focusing lens, including an upper lens and a lower lens; The upper lens of each dimming unit is located above the swing mirror. The laser light from the laser is projected onto the swing mirror. The swing mirror swings back and forth to reflect the laser light to each dimming unit in turn. The laser light is then reflected to the corresponding focusing lens through the corresponding upper and lower lenses. The drive mechanism drives the oscillating mirror to oscillate back and forth at a set frequency H, enabling each focusing mirror to simultaneously cut fabric on the embroidery machine when the laser is operating. This oscillating beam splitting laser cutting system uses the reciprocating oscillating mirror to sequentially reflect a laser beam emitted by the laser to each dimming unit. The beam is then reflected through the corresponding upper and lower lenses to the corresponding focusing mirrors (where the laser beam is focused by the focusing mirrors, forming a laser spot on the fabric). Simultaneously, the oscillating mirror oscillates back and forth at a set frequency H, causing each focusing mirror to produce an intermittent laser spot with a set frequency H. The laser spot has a specific diameter (typically 0.1-0.5 mm). For example, each focusing mirror produces H laser spots per second. This allows the intermittent laser spots projected by the focusing mirrors to interlock with each other during fabric cutting by controlling the fabric's movement speed, achieving continuous fabric cutting. Each focusing mirror can cut fabric at a specific station, and the lasers from each focusing mirror can simultaneously cut fabric on the embroidery machine.

[0016] At the same time, due to the arrangement of the dimming units, by clustering the upper lenses of each dimming unit above the oscillating mirror, the oscillating mirror can, with each small swing angle, sequentially reflect the laser light emitted by the laser to the upper lenses of each dimming unit, and then reflect it to the corresponding focusing mirror through the corresponding upper and lower lenses. Based on this, this solution can effectively reduce the angle of each swing of the oscillating mirror, thereby facilitating an increase in the oscillation frequency of the oscillating mirror, reducing the performance requirements of the drive mechanism, and further reducing the difficulty and cost of production.

[0017] On the other hand, since the oscillating spectroscopic laser cutting system of this scheme reflects a beam of laser emitted by the laser to each focusing mirror in sequence through an oscillating mirror, each focusing mirror generates an intermittent laser spot with a set frequency of H, the laser power entering each focusing mirror each time will be consistent with the laser power emitted by the laser. Therefore, without increasing the laser power, a single laser can be used to cut fabrics at multiple workstations on the embroidery machine at the same time, thereby reducing production costs.

[0018] Preferably, the system further includes a light guide unit corresponding to each dimming unit. The light guide unit includes at least one reflector. The oscillating mirror reflects the laser light from each dimming unit, which is then reflected by the corresponding upper lens, lower lens, and reflector to the corresponding focusing lens for focusing. In this way, the reflector of the light guide unit can be used to adjust the path of the laser light, thereby adjusting the position of the focusing lens and cutting part to meet different cutting needs.

[0019] Preferably, two focusing lenses and two light guide units are used, with the lower lens of each dimming unit located between the two light guide units. This solution can cut fabric at two workstations on an embroidery machine. Furthermore, the lower lens of the dimming unit can be placed between the two light guide units to accommodate actual production layout needs.

[0020] Preferably, the light guide unit further includes a protective tube, which is arranged along the laser path within the corresponding light guide unit. In this way, the laser light incident on the light guide unit will be transmitted within the corresponding protective tube, thereby effectively preventing objects or personnel from coming into contact with the laser light, thereby protecting the objects and the operator.

[0021] Preferably, the upper lenses of each dimming unit are close to each other, and the lower lenses of each dimming unit are close to each other. The swing angle of the oscillating mirror is C, and the value of C is 2-40 degrees. Due to the setting of the dimming unit, the upper lenses of each dimming unit are gathered and arranged above the oscillating mirror. In this way, the oscillating mirror can be swung at a smaller angle C each time (set to an angle between 2-40 degrees as needed) to reflect the laser light emitted by the laser sequentially to the upper lenses of each dimming unit, and then reflected to the corresponding focusing mirror through the upper lenses. Based on this, this solution can effectively reduce the angle of each swing of the oscillating mirror, thereby facilitating an increase in the swing frequency of the oscillating mirror, reducing the performance requirements of the drive mechanism, and further reducing the difficulty and cost of production.

[0022] Preferably, the lower lens of each dimming unit is located below the swing mirror, which not only facilitates the installation and arrangement of the lower lens, but also helps to adjust the position of the lower lens according to actual needs to adjust the position of the light guide unit accordingly.

[0023] Preferably, the dimming unit is located below the laser, and the laser light of the laser is incident on the swing mirror from top to bottom, so as to facilitate the arrangement of the laser and the swing mirror on the embroidery machine.

[0024] The beneficial effect of the present invention is that it can realize cutting fabrics of multiple stations on an embroidery machine simultaneously by using a single laser without increasing the power of the laser, thereby reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a front view of a swing-beam splitting laser cutting system according to a first specific embodiment of the present invention.

[0026] Figure 2 This is a front view of a swing-beam splitting laser cutting system according to a third specific embodiment of the present invention.

[0027] Figure 3 It is a three-dimensional structural schematic diagram of a swing-beam splitting laser cutting system according to the third specific embodiment of the present invention.

[0028] In the picture: Laser 1; Focusing lens 2; Dimming unit 3, upper lens 3.1, lower lens 3.2; Spectrometer 4, oscillating mirror 4.1, drive motor 4.2; Light guide unit 5, reflector 5.1, protective tube 5.2. DETAILED DESCRIPTION

[0029] Specific embodiment 1, as Figure 1 As shown, a swing-beam splitting laser cutting system includes a laser 1, a beam splitting device 4, at least two dimming units 3 and at least two focusing lenses 2. In this embodiment, the laser 1 is mounted on the frame of the embroidery machine through a mounting bracket.

[0030] The light adjustment unit 3 corresponds to the focusing lens 2. The light adjustment unit 3 includes an upper lens 3.1. The upper lens 3.1 is directly or indirectly arranged on the frame of the embroidery machine.

[0031] The spectrometer 4 is directly or indirectly mounted on the frame of the embroidery machine. In this embodiment, the spectrometer 4 is mounted on the frame of the embroidery machine via a mounting bracket. The spectrometer 4 includes a reciprocating oscillating mirror 4.1 and a drive mechanism. The drive mechanism is used to drive the reciprocating oscillation of the oscillating mirror 4.1. The drive mechanism is a drive motor 4.2. In this embodiment, the drive motor 4.2 is a galvanometer motor. Of course, the drive motor 4.2 can also be a DC motor, a servo motor, or other types of motors.

[0032] In one example, the drive motor 4.2 is fixed on a mounting bracket, and the swing mirror 4.1 is directly fixed on an output shaft of the drive motor 4.2.

[0033] In another example, the oscillating mirror 4.1 is rotatably mounted on a mounting bracket via a rotating shaft, the driving motor 4.2 is fixed to the mounting bracket, and the output shaft of the driving motor 4.2 is connected to the rotating shaft of the oscillating mirror 4.1.

[0034] The upper lens 3.1 of each dimming unit 3 is located above the oscillating mirror 4.1. Laser light from the laser 1 is incident on the oscillating mirror 4.1. The oscillating mirror 4.1 oscillates back and forth, reflecting the laser light to the upper lens 3.1 of each dimming unit 3 in sequence, and then to the corresponding focusing lens 2 through the upper lens 3.1.

[0035] The driving mechanism drives the oscillating mirror 4.1 to oscillate back and forth at a set frequency H, so that when the laser 1 is working, each focusing mirror 2 can cut the fabric on the embroidery machine at the same time.

[0036] The oscillating beam splitting laser cutting system of this embodiment uses an oscillating mirror 4.1 to reciprocate, sequentially reflecting a laser beam emitted by a laser 1 to the upper lens 3.1 of each dimming unit 3. The laser beam is then reflected by the upper lens 3.1 to the corresponding focusing lens 2 (where the laser beam is focused by the focusing lens 2, forming a laser spot on the fabric). Simultaneously, the oscillating mirror 4.1 oscillates back and forth at a set frequency H, causing each focusing lens 2 to produce an intermittent laser spot with a set frequency H. The laser spot has a certain diameter (typically 0.1-0.5 mm). For example, each focusing lens 2 produces H laser spots per second. This allows the intermittent laser spots emitted by the focusing mirror 2 to interlock with each other when cutting fabric on an embroidery machine by controlling the fabric's movement speed, thereby achieving continuous cutting of the fabric. Each focusing lens 2 can cut fabric at a specific station, and the lasers from each focusing lens 2 can simultaneously cut fabric on the embroidery machine.

[0037] At the same time, due to the arrangement of the dimming units 3, the upper lenses 3.1 of each dimming unit 3 are collectively arranged above the swing mirror 4.1. Thus, each swing of the swing mirror 4.1 by a relatively small angle can reflect the laser light emitted by the laser 1 sequentially to the upper lenses 3.1 of each dimming unit 3, and then through the upper lenses 3.1 to the corresponding focusing lens 2. Based on this, this embodiment can effectively reduce the angle of each swing of the swing mirror 4.1, thereby facilitating an increase in the swing frequency of the swing mirror 4.1, lowering the performance requirements of the drive mechanism, and further reducing the manufacturing difficulty and cost.

[0038] On the other hand, since the oscillating spectroscopic laser cutting system of this embodiment reflects a beam of laser emitted by the laser 1 to each focusing mirror 2 in sequence through the oscillating mirror 4.1, each focusing mirror 2 generates an intermittent laser spot with a set frequency of H. Therefore, the laser power entering each focusing mirror 2 each time will be consistent with the laser power emitted by the laser 1. Therefore, it is possible to use a single laser 1 to cut fabrics at multiple workstations on the embroidery machine at the same time without increasing the power of the laser 1, thereby reducing production costs.

[0039] Specifically, such as Figure 1 As shown, the dimming unit 3 is located below the laser 1. The laser light from the laser 1 is incident on the swing mirror 4.1 from top to bottom. This facilitates the arrangement of the laser 1 and the swing mirror 4.1 on the embroidery machine.

[0040] In this embodiment, the frequency H is set to H oscillations per second, where H is greater than or equal to 10. Thus, when the oscillating mirror 4.1 oscillates at the set frequency H, each focusing mirror 2 can generate at least 10 laser spots per second. When cutting fabric on an embroidery machine, the fabric's moving speed can be controlled so that these intermittent laser spots focused on the fabric by the focusing mirror 2 interlock with each other, thereby achieving continuous cutting of the fabric.

[0041] Furthermore, H is set to a value of 80-400 times, for example, 100, 150, 200, 250, or 300 times. Thus, when the oscillating mirror 4.1 oscillates at the set frequency H, each focusing mirror 2 can generate 80-400 laser spots per second. Although a higher oscillation frequency of the oscillating mirror 4.1 results in a greater number of laser spots generated per second by each focusing mirror 2, which is more conducive to achieving continuous fabric cutting, a higher oscillation frequency of the oscillating mirror 4.1 also places higher performance requirements on the drive mechanism, increasing manufacturing costs. Therefore, in this embodiment, H is set to a value of 80-400 times. This allows for good adaptation to the cutting needs of fabrics of various materials while minimizing the performance requirements on the drive mechanism, thus helping to control manufacturing costs.

[0042] In this embodiment, when the driving mechanism causes the oscillating mirror 4.1 to oscillate at a set frequency H, each time the oscillating mirror 4.1 reflects the laser light emitted by the laser 1 onto one of the focusing mirrors 2, the oscillating mirror 4.1 stops for a set time T (i.e., the driving mechanism stops for the set time T). The set time T is 1-5 milliseconds, for example, the set time T is 1 millisecond, 1.5 milliseconds, or 2 milliseconds; then, the oscillating mirror 4.1 continues to oscillate.

[0043] Furthermore, the diameter of the laser spot after focusing by focusing lens 2 is 0.1-0.5 mm. For example, the diameter of the laser spot after focusing by focusing lens 2 is 0.3 mm. The larger the diameter of the laser spot after focusing by focusing lens 2, the more conducive it is to making the intermittent laser spots focused by focusing lens 2 on the fabric interlock with each other; however, the larger the diameter of the laser spot after focusing by focusing lens 2, the more dispersed the laser spot energy is, which is not conducive to cutting fabric. Therefore, in this embodiment, the diameter of the laser spot after focusing by focusing lens 2 is set to 0.1-0.5 mm. This balances the intermittent laser spots focused by focusing lens 2 on the fabric interlock with each other and the ability of the focused laser spot to cut fabric.

[0044] Further, such as Figure 1As shown, the upper lenses 3.1 of each dimming unit 3 are close to each other. The angle of each swing of the swing mirror 4.1 is C, and C is 2-40 degrees. For example, the angle of each swing of the swing mirror 4.1 is 10 degrees, 16 degrees, 20 degrees, or 30 degrees. Due to the configuration of the dimming unit 3, the upper lenses 3.1 of each dimming unit 3 are gathered and arranged above the swing mirror 4.1. In this way, the swing mirror 4.1 can swing a smaller angle C each time (set to an angle between 2-40 degrees as needed) to reflect the laser light emitted by the laser 1 to the upper lenses 3.1 of each dimming unit 3 in sequence, and then reflect it to the corresponding focusing lens 2 through the upper lenses 3.1. Based on this, this embodiment can effectively reduce the angle of each swing of the swing mirror 4.1, which is conducive to increasing the swing frequency of the swing mirror 4.1, reducing the requirements for the performance of the drive mechanism, and further reducing the difficulty and cost of production.

[0045] Further, such as Figure 1 As shown, a swinging spectroscopic laser cutting system also includes a light guide unit 5 corresponding to the dimming unit 3. The light guide unit 5 includes at least one reflector 5.1. The swing mirror 4.1 reflects the laser light to the upper lens 3.1 of each dimming unit 3, and the laser light is reflected to the corresponding focusing lens 2 through the reflector 5.1 of the corresponding light guide unit 5 for focusing. Specifically, the driving mechanism drives the swing mirror 4.1 to swing back and forth, and reflects the laser light emitted by the laser 1 to the upper lens 3.1 of each dimming unit 3 in turn. The upper lens 3.1 reflects the laser light to the reflector 5.1 of the corresponding light guide unit 5, and then reflects the laser light to the corresponding focusing lens 2 through the reflector 5.1 for focusing. In this way, the path of the laser light can be adjusted by the reflector 5.1 of the light guide unit 5, and then the position of the focusing lens 2 and the cutting part can be adjusted to meet the needs of different cutting.

[0046] Further, such as Figure 1 As shown, the light guide unit 5 further includes a protective tube 5.2, which is arranged along the laser path within the corresponding light guide unit 5. In this way, the laser light incident on the light guide unit 5 will be transmitted within the corresponding protective tube 5.2, thereby effectively preventing objects or personnel from coming into contact with the laser light, thereby protecting objects and operators.

[0047] The number of reflectors 5.1 of the light guide unit 5 can be set according to actual needs. For example, the same light guide unit 5 can have one, two, or three or more reflectors 5.1. In actual production, the reflectors 5.1 of the light guide unit 5 can be used to adjust the path of the laser, thereby adjusting the position of the focusing lens 2 and the cutting part to meet different cutting needs.

[0048] In one embodiment, Figure 1As shown, the same light guide unit 5 includes two reflectors 5.1, one of which is located above the focusing lens 2. The laser light reflected by the oscillating mirror 4.1 onto the upper lens 3.1 of each dimming unit 3 is reflected twice by the two reflectors 5.1 corresponding to the light guide unit 5 before entering the focusing lens 2 from top to bottom for focusing. In this embodiment, the light guide unit 5 includes two protective tubes 5.2, one located between the two reflectors 5.1 and the other between the oscillating mirror 4.1 and the adjacent reflector 5.1.

[0049] In another embodiment, the same light guide unit 5 includes a reflector 5.1 located above the focusing lens 2. Laser light reflected by the oscillating mirror 4.1 onto the upper lens 3.1 of each dimming unit 3 is then reflected by the corresponding reflector 5.1 of the light guide unit 5 and then enters the focusing lens 2 from top to bottom for focusing. In this embodiment, the light guide unit 5 includes a single protective tube 5.2 located between the oscillating mirror 4.1 and the reflector 5.1.

[0050] In the third embodiment, the same light guide unit 5 includes three reflectors 5.1 (not shown), one of which is located above the focusing lens 2. Laser light reflected by the oscillating mirror 4.1 onto the upper lens 3.1 of each dimming unit 3 is reflected three times by the three reflectors 5.1 of the corresponding light guide unit 5 before entering the focusing lens 2 from top to bottom for focusing. In this embodiment, the light guide unit 5 includes three protective tubes 5.2.

[0051] Specific embodiment 2: The rest of the structure of this embodiment refers to specific embodiment 1, except that: In this embodiment, Figure 1 As shown, there are two focusing lenses 2 , two light guide units 5 , and two dimming units 3 .

[0052] like Figure 1 As shown, the upper lens 3.1 of each dimming unit 3 is located between the two light guide units 5. The laser light emitted by the laser 1 is incident vertically downward onto the oscillating mirror 4.1. In this embodiment, the upper lens 3.1 of the two dimming units 3 are symmetrically distributed along the laser path between the laser 1 and the oscillating mirror 4.1. Of course, it should be noted that the upper lens 3.1 of the two dimming units 3 can also be distributed asymmetrically.

[0053] In this embodiment, the swinging mirror 4.1 swings at an angle of C degrees each time. Specifically, when the swinging mirror 4.1 swings clockwise by C / 2 degrees from a horizontal state (at this time, the swinging mirror 4.1 is at a positive angle of C / 2 degrees), the laser light emitted by the laser 1 is reflected to one of the focusing mirrors 2 through the corresponding dimming unit 3 and the light guiding unit 5; when the swinging mirror 4.1 swings counterclockwise by C / 2 degrees from a horizontal state (at this time, the swinging mirror 4.1 is at a negative angle of C / 2 degrees), the laser light emitted by the laser 1 is reflected to the other focusing mirror 2 through the corresponding dimming unit 3 and the light guiding unit 5.

[0054] In specific operation, the driving mechanism causes the oscillating mirror 4.1 to oscillate at a set frequency H. During this process, when the oscillating mirror 4.1 rotates to a positive angle C / 2 degrees and reflects the laser light emitted by the laser 1 to one of the focusing mirrors 2, the oscillating mirror 4.1 stops for a set time T. The set time T is 1-5 milliseconds, for example, the set time T is 1 millisecond, 1.5 milliseconds, or 2 milliseconds. When the oscillating mirror 4.1 rotates to a negative angle of C / 2 degrees and reflects the laser light emitted by the laser 1 to one of the focusing mirrors 2, the oscillating mirror 4.1 stops for a set time T, which is 1-5 milliseconds, for example, 1 millisecond, 1.5 milliseconds, or 2 milliseconds.

[0055] Specific embodiment three, as Figure 2 、 Figure 3 As shown, a swing-beam splitting laser cutting system includes a laser 1, a beam splitting device 4, at least two dimming units 3 and at least two focusing lenses 2. In this embodiment, the laser 1 is mounted on the frame of the embroidery machine through a mounting bracket.

[0056] The dimming unit 3 corresponds to the focusing lens 2. The dimming unit 3 includes an upper lens 3.1 and a lower lens 3.2. The lower lens 3.2 is located below the upper lens 3.1. The upper lens 3.1 and the lower lens 3.2 are directly or indirectly mounted on the frame of the embroidery machine.

[0057] The spectrometer 4 is directly or indirectly mounted on the frame of the embroidery machine. In this embodiment, the spectrometer 4 is mounted on the frame of the embroidery machine via a mounting bracket. The spectrometer 4 includes a reciprocating oscillating mirror 4.1 and a drive mechanism. The drive mechanism is used to drive the reciprocating oscillation of the oscillating mirror 4.1. The drive mechanism is a drive motor 4.2. In this embodiment, the drive motor 4.2 is a galvanometer motor. Of course, the drive motor 4.2 can also be a DC motor, a servo motor, or other types of motors.

[0058] In one example, the drive motor 4.2 is fixed on a mounting bracket, and the swing mirror 4.1 is directly fixed on an output shaft of the drive motor 4.2.

[0059] In another example, the oscillating mirror 4.1 is rotatably mounted on a mounting bracket via a rotating shaft, the driving motor 4.2 is fixed to the mounting bracket, and the output shaft of the driving motor 4.2 is connected to the rotating shaft of the oscillating mirror 4.1.

[0060] The upper lens 3.1 of each dimming unit 3 is located above the oscillating mirror 4.1. Laser light emitted by the laser 1 is incident on the oscillating mirror 4.1. The oscillating mirror 4.1 oscillates back and forth, reflecting the laser light to each dimming unit 3 in sequence. This light is then reflected to the corresponding focusing mirror 2 via the upper lens 3.1 and lower lens 3.2 of the corresponding dimming unit 3. Specifically, the laser light reflected from the oscillating mirror 4.1 to each dimming unit 3 is then reflected to the corresponding focusing mirror 2 via the corresponding upper lens 3.1 and lower lens 3.2, where it is focused.

[0061] The driving mechanism drives the oscillating mirror 4.1 to oscillate back and forth at a set frequency H, so that when the laser 1 is working, each focusing mirror 2 can cut the fabric on the embroidery machine at the same time.

[0062] The oscillating beam splitting laser cutting system of this embodiment uses an oscillating mirror 4.1 to reciprocate, sequentially reflecting a laser beam emitted by laser 1 to each dimming unit 3. The beam is then reflected through the corresponding upper and lower lenses 3.1 and 3.2 to the corresponding focusing lens 2 (where the laser beam is focused by the focusing lens 2, forming a laser spot on the fabric). Simultaneously, the oscillating mirror 4.1 oscillates back and forth at a set frequency H, causing each focusing lens 2 to produce an intermittent laser spot with a set frequency H. The laser spot has a specific diameter (typically 0.1-0.5 mm). For example, each focusing lens 2 produces H laser spots per second. This allows the intermittent laser spots emitted by the focusing lens 2 to interlock with each other when cutting fabric on an embroidery machine by controlling the fabric's movement speed, thereby achieving continuous fabric cutting. Each focusing lens 2 can cut fabric at a specific station, and the lasers from each focusing lens 2 can simultaneously cut fabric on the embroidery machine.

[0063] At the same time, due to the arrangement of the dimming units 3, by clustering the upper lenses 3.1 of each dimming unit 3 above the swinging mirror 4.1, the swinging mirror 4.1 can swing at a relatively small angle each time, thereby reflecting the laser light emitted by the laser 1 sequentially to the upper lenses 3.1 of each dimming unit 3, and then through the corresponding upper lenses 3.1 and lower lenses 3.2 to the corresponding focusing mirror 2. Based on this, this embodiment can effectively reduce the angle of each swing of the swinging mirror 4.1, thereby facilitating an increase in the swing frequency of the swinging mirror 4.1, reducing the performance requirements of the drive mechanism, and further reducing the manufacturing difficulty and cost.

[0064] On the other hand, since the oscillating spectroscopic laser cutting system of this embodiment reflects a beam of laser emitted by the laser 1 to each focusing mirror 2 in sequence through the oscillating mirror 4.1, each focusing mirror 2 generates an intermittent laser spot with a set frequency of H. Therefore, the laser power entering each focusing mirror 2 each time will be consistent with the laser power emitted by the laser 1. Therefore, it is possible to use a single laser 1 to cut fabrics at multiple workstations on the embroidery machine at the same time without increasing the power of the laser 1, thereby reducing production costs.

[0065] Specifically, such as Figure 2 、 Figure 3 As shown, the dimming unit 3 is located below the laser 1. The laser light from the laser 1 is incident on the swing mirror 4.1 from top to bottom. This facilitates the arrangement of the laser 1 and the swing mirror 4.1 on the embroidery machine.

[0066] In this embodiment, the frequency H is set to H oscillations per second, where H is greater than or equal to 10. Thus, when the oscillating mirror 4.1 oscillates at the set frequency H, each focusing mirror 2 can generate at least 10 laser spots per second. When cutting fabric on an embroidery machine, the fabric's moving speed can be controlled so that these intermittent laser spots focused on the fabric by the focusing mirror 2 interlock with each other, thereby achieving continuous cutting of the fabric.

[0067] Furthermore, H is set to a value of 80-400 times, for example, 100, 150, 200, 250, or 300 times. Thus, when the oscillating mirror 4.1 oscillates at the set frequency H, each focusing mirror 2 can generate 80-400 laser spots per second. Although a higher oscillation frequency of the oscillating mirror 4.1 results in a greater number of laser spots generated per second by each focusing mirror 2, which is more conducive to achieving continuous fabric cutting, a higher oscillation frequency of the oscillating mirror 4.1 also places higher performance requirements on the drive mechanism, increasing manufacturing costs. Therefore, in this embodiment, H is set to a value of 80-400 times. This allows for good adaptation to the cutting needs of fabrics of various materials while minimizing the performance requirements on the drive mechanism, thus helping to control manufacturing costs.

[0068] In this embodiment, when the driving mechanism causes the oscillating mirror 4.1 to oscillate at a set frequency H, each time the oscillating mirror 4.1 reflects the laser light emitted by the laser 1 onto one of the focusing mirrors 2, the oscillating mirror 4.1 stops for a set time T (i.e., the driving mechanism stops for the set time T). The set time T is 1-5 milliseconds, for example, the set time T is 1 millisecond, 1.5 milliseconds, or 2 milliseconds; then, the oscillating mirror 4.1 continues to oscillate.

[0069] In this embodiment, the lower lens 3.2 of each dimming unit 3 is located below the swing mirror 4.1. This not only facilitates the installation and arrangement of the lower lens 3.2, but also facilitates adjusting the position of the lower lens 3.2 according to actual needs to adjust the position of the light guide unit 5 accordingly.

[0070] Of course, it should be noted that the position of the lower mirror 3.2 of the dimming unit 3 can also be higher than the swing mirror 4.1.

[0071] Furthermore, the diameter of the laser spot after focusing by focusing lens 2 is 0.1-0.5 mm. For example, the diameter of the laser spot after focusing by focusing lens 2 is 0.3 mm. The larger the diameter of the laser spot after focusing by focusing lens 2, the more conducive it is to making the intermittent laser spots focused by focusing lens 2 on the fabric interlock with each other; however, the larger the diameter of the laser spot after focusing by focusing lens 2, the more dispersed the laser spot energy is, which is not conducive to cutting fabric. Therefore, in this embodiment, the diameter of the laser spot after focusing by focusing lens 2 is set to 0.1-0.5 mm. This balances the intermittent laser spots focused by focusing lens 2 on the fabric interlock with each other and the ability of the focused laser spot to cut fabric.

[0072] Further, such as Figure 2 、 Figure 3 As shown, the upper lenses 3.1 of each dimming unit 3 are close to each other. The angle of each swing of the swing mirror 4.1 is C, and C is 2-40 degrees. For example, the angle of each swing of the swing mirror 4.1 is 10 degrees, 16 degrees, 20 degrees, or 30 degrees. Due to the configuration of the dimming unit 3, the upper lenses 3.1 of each dimming unit 3 are gathered and arranged above the swing mirror 4.1. In this way, the swing mirror 4.1 can swing a smaller angle C each time (set to an angle between 2-40 degrees as needed) to reflect the laser light emitted by the laser 1 to the upper lenses 3.1 of each dimming unit 3 in sequence, and then reflect it to the corresponding focusing lens 2 through the upper lenses 3.1. Based on this, this embodiment can effectively reduce the angle of each swing of the swing mirror 4.1, which is conducive to increasing the swing frequency of the swing mirror 4.1, reducing the requirements for the performance of the drive mechanism, and further reducing the difficulty and cost of production.

[0073] Further, such as Figure 2 、 Figure 3As shown, a swinging spectroscopic laser cutting system also includes a light guide unit 5 corresponding to the dimming unit 3. The light guide unit 5 includes at least one reflector 5.1. The laser reflected by the swing mirror 4.1 to each dimming unit 3 is reflected to the corresponding focusing mirror 2 for focusing through the corresponding upper lens 3.1, lower lens 3.2 and reflector 5.1 in turn. Specifically, the driving mechanism drives the swing mirror 4.1 to swing back and forth, and reflects the laser emitted by the laser 1 to the upper lens 3.1 of each dimming unit 3 in turn. The upper lens 3.1 reflects the laser to the lower lens 3.2, and the lower lens 3.2 reflects the laser to the reflector 5.1 of the corresponding light guide unit 5, and then reflects it to the corresponding focusing mirror 2 through the reflector 5.1 for focusing. In this way, the path of the laser can be adjusted by the reflector 5.1 of the light guide unit 5, and then the position of the focusing mirror 2 and the cutting part can be adjusted to meet the needs of different cutting.

[0074] Further, such as Figure 2 、 Figure 3 As shown, the light guide unit 5 further includes a protective tube 5.2, which is arranged along the laser path within the corresponding light guide unit 5. In this way, the laser light incident on the light guide unit 5 will be transmitted within the corresponding protective tube 5.2, thereby effectively preventing objects or personnel from coming into contact with the laser light, thereby protecting objects and operators.

[0075] The number of reflectors 5.1 of the light guide unit 5 can be set according to actual needs. For example, the same light guide unit 5 can have one, two, or three or more reflectors 5.1. In actual production, the reflectors 5.1 of the light guide unit 5 can be used to adjust the path of the laser, thereby adjusting the position of the focusing lens 2 and the cutting part to meet different cutting needs.

[0076] In one embodiment, Figure 2 、 Figure 3 As shown, the same light guide unit 5 includes two reflectors 5.1, one of which is located above the focusing lens 2. The laser light reflected by the oscillating mirror 4.1 to each dimming unit 3 passes through the corresponding upper lens 3.1 and lower lens 3.2, then reflects twice by the two reflectors 5.1 of the corresponding light guide unit 5 before entering the focusing lens 2 from top to bottom for focusing. In this embodiment, the light guide unit 5 includes two protective tubes 5.2, one of which is located between the two reflectors 5.1 and the other between the oscillating mirror 4.1 and the adjacent reflector 5.1.

[0077] In another embodiment, the same light guide unit 5 includes a reflector 5.1 located above the focusing lens 2. The laser light reflected by the oscillating mirror 4.1 to each dimming unit 3 passes through the corresponding upper lens 3.1 and lower lens 3.2, then is reflected by the reflector 5.1 of the corresponding light guide unit 5, and then enters the focusing lens 2 from top to bottom for focusing. In this embodiment, the light guide unit 5 has a single protective tube 5.2 located between the oscillating mirror 4.1 and the reflector 5.1.

[0078] In the third embodiment, the same light guide unit 5 includes three reflectors 5.1 (not shown), one of which is located above the focusing lens 2. The laser light reflected by the oscillating mirror 4.1 to each dimming unit 3 passes through the corresponding upper lens 3.1 and lower lens 3.2, then reflects three times by the three reflectors 5.1 of the corresponding light guide unit 5 before entering the focusing lens 2 from top to bottom for focusing. In this embodiment, the light guide unit 5 includes three protective tubes 5.2.

[0079] Specific embodiment 4: The rest of the structure of this embodiment refers to specific embodiment 3, except that: In this embodiment, Figure 2 、 Figure 3 As shown, there are two focusing lenses 2 , two light guide units 5 , and two dimming units 3 .

[0080] like Figure 2 、 Figure 3 As shown, the lower lens 3.2 of each dimming unit 3 is located between the two light guide units 5. The laser light emitted by the laser 1 is incident vertically downward onto the oscillating mirror 4.1. In this embodiment, the upper lenses 3.1 of the two dimming units 3 are symmetrically distributed along the laser path between the laser 1 and the oscillating mirror 4.1, and the angle between the upper lenses 3.1 and the horizontal plane is C / 2 degrees. Of course, it should be noted that the upper lenses 3.1 of the two dimming units 3 can also be distributed asymmetrically.

[0081] In this embodiment, the swinging mirror 4.1 swings at an angle of C degrees each time. Specifically, when the swinging mirror 4.1 swings clockwise by C / 2 degrees from a horizontal state (at this time, the swinging mirror 4.1 is at a positive angle of C / 2 degrees), the laser light emitted by the laser 1 is reflected to one of the focusing mirrors 2 through the corresponding dimming unit 3 and the light guiding unit 5; when the swinging mirror 4.1 swings counterclockwise by C / 2 degrees from a horizontal state (at this time, the swinging mirror 4.1 is at a negative angle of C / 2 degrees), the laser light emitted by the laser 1 is reflected to the other focusing mirror 2 through the corresponding dimming unit 3 and the light guiding unit 5.

[0082] In specific operation, the driving mechanism causes the oscillating mirror 4.1 to oscillate at a set frequency H. During this process, when the oscillating mirror 4.1 rotates to a positive angle C / 2 degrees and reflects the laser light emitted by the laser 1 to one of the focusing mirrors 2, the oscillating mirror 4.1 stops for a set time T. The set time T is 1-5 milliseconds, for example, the set time T is 1 millisecond, 1.5 milliseconds, or 2 milliseconds. When the oscillating mirror 4.1 rotates to a negative angle of C / 2 degrees and reflects the laser light emitted by the laser 1 to one of the focusing mirrors 2, the oscillating mirror 4.1 stops for a set time T, which is 1-5 milliseconds, for example, 1 millisecond, 1.5 milliseconds, or 2 milliseconds.

[0083] Specific embodiment 5: The rest of the structure of this embodiment refers to specific embodiment 1 or specific embodiment 3, except that: In this embodiment, there are three or four focusing mirrors 2 (not shown). There are also three or four light guide units 5 and three or four dimming units 3. During operation of the spectroscopic laser cutting device for an embroidery machine, each focusing mirror 2 can cut fabric at one station, and the lasers from each focusing mirror 2 can simultaneously cut fabric on the embroidery machine, enabling a single laser 1 to simultaneously cut fabric at three or four stations on the embroidery machine.

[0084] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent transformation made to the above embodiment based on the technical essence of the present invention still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A swing-beam splitting laser cutting system, characterized in that: It comprises a laser (1), a spectrometer (4) and at least two focusing mirrors (2), wherein the spectrometer comprises: A dimming unit (3) corresponding one-to-one to the focusing lens (2), comprising an upper lens (3.1); A swing mirror (4.1), wherein the upper lens (3.1) of each dimming unit (3) is located above the swing mirror (4.1), and the laser light from the laser (1) is incident on the swing mirror (4.1). The swing mirror (4.1) swings back and forth to sequentially reflect the laser light to the upper lens (3.1) of each dimming unit, and then reflects the laser light through the upper lens (3.1) to the corresponding focusing lens (2); The driving mechanism drives the oscillating mirror (4.1) to oscillate back and forth at a set frequency H, so that when the laser (1) is working, each focusing mirror can simultaneously cut the fabric on the embroidery machine.

2. The oscillating beam splitting laser cutting system according to claim 1, characterized in that: The invention also includes light guide units (5) corresponding to the light adjustment units (3) one by one, and the light guide units (5) include at least one reflector (5.1). The laser light reflected by the swing mirror (4.1) to the upper lens (3.1) of each light adjustment unit (3) is reflected by the reflector (5.1) of the corresponding light guide unit (5) to the corresponding focusing lens (2) for focusing.

3. The oscillating beam splitting laser cutting system according to claim 2, characterized in that: There are two focusing lenses (2), two light guide units (5), and the upper lens (3.1) of each light adjustment unit (3) is located between the two light guide units (5).

4. The oscillating beam splitting laser cutting system according to claim 2 or 3, characterized in that: The light guide unit (5) further comprises a protective tube (5.2), and the laser light incident on the light guide unit is transmitted within the corresponding protective tube (5.2).

5. The oscillating beam splitting laser cutting system according to any one of claims 1 to 3, characterized in that: The upper lenses (3.1) of each dimming unit (3) are close to each other, and the swing mirror (4.1) swings at an angle C each time, with the value of C ranging from 2 to 50 degrees.

6. The oscillating beam splitting laser cutting system according to any one of claims 1 to 3, characterized in that: The dimming unit (3) is located below the laser (1), and the laser light of the laser (1) is incident on the swing mirror (4.1) from top to bottom.

7. A swing-beam splitting laser cutting system, characterized in that: It comprises a laser (1), a light splitting device (4) and at least two focusing mirrors (2), The spectrometer includes: A dimming unit (3) corresponding one-to-one to the focusing lens (2), comprising an upper lens (3.1) and a lower lens (3.2); A swing mirror (4.1), wherein the upper lens of each dimming unit is located above the swing mirror, and the laser light emitted by the laser (1) is incident on the swing mirror (4.1). The swing mirror (4.1) swings back and forth to reflect the laser light to each dimming unit (3) in sequence, and then reflects the laser light to the corresponding focusing mirror (2) through the corresponding upper lens (3.1) and lower lens (3.2); The driving mechanism drives the oscillating mirror to oscillate back and forth at a set frequency H, so that when the laser is working, each focusing mirror can cut the fabric on the embroidery machine at the same time.

8. The oscillating beam splitting laser cutting system according to claim 7, characterized in that: The invention also includes light guide units (5) corresponding to the dimming units (3) one by one, and the light guide units (5) include at least one reflector (5.1). The laser light reflected by the swing mirror (4.1) to each dimming unit (3) is reflected to the corresponding focusing mirror (2) through the corresponding upper lens (3.1), lower lens (3.2) and reflector (5.1) in sequence for focusing.

9. The oscillating beam splitting laser cutting system according to claim 7, characterized in that: There are two focusing lenses (2), two light guide units (5), and the lower lens (3.2) of each light adjustment unit (3) is located between the two light guide units (5).

10. The oscillating beam splitting laser cutting system according to claim 8 or 9, characterized in that: The light guide unit (5) further comprises a protective tube (5.2), and the laser light incident on the light guide unit is transmitted within the corresponding protective tube (5.2).

11. The oscillating beam splitting laser cutting system according to any one of claims 7 to 9, characterized in that: The upper lenses (3.1) of each dimming unit (3) are close to each other, the lower lenses (3.2) of each dimming unit (3) are close to each other, and the swinging angle of the swinging mirror (4.1) is C each time, and the value of C is 2-40 degrees.

12. The oscillating beam splitting laser cutting system according to any one of claims 7 to 9, characterized in that: The lower lens (3.2) of each dimming unit (3) is located below the swing mirror (4.1).

13. The oscillating beam splitting laser cutting system according to any one of claims 7 to 9, characterized in that: The dimming unit (3) is located below the laser (1), and the laser light of the laser (1) is incident on the swing mirror (4.1) from top to bottom.

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