Laser engraver and elastic belt laser engraving method

Abstract

The application discloses a laser engraving machine and an elastic belt laser engraving method, wherein the laser engraving machine comprises: a workbench, which is provided with a laser engraving head; a positioning unit, which is used for positioning an elastic belt in a strip shape; a conveying unit, which comprises a first belt conveying assembly and a second belt conveying assembly, the first belt conveying assembly and the second belt conveying assembly are respectively arranged on the two sides of the workbench, and the elastic belt sequentially passes through the first belt conveying assembly, the positioning unit and the second belt conveying assembly; a tensioning unit, which comprises a first belt tensioning assembly and a second belt tensioning assembly, and the first belt tensioning assembly and the second belt tensioning assembly are both used for driving the elastic belt to move along the side away from the workbench; and a control unit, which is used for controlling the positioning unit, the conveying unit and the tensioning unit. The laser engraving machine does not need to customize a mold, has low requirements on the material of the fabric itself, is high in flexibility, can meet the continuous engraving processing of the elastic belt, is convenient to use, and has high quality of the finished product.

Description

Technical Field

[0001] This invention relates to the field of laser engraving technology for textile fibers, and particularly to laser engraving machines and laser engraving methods for elastic bands applied to laser engraving machines. Background Technology

[0002] Narrow elastic fabrics can typically achieve patterned effects through weaving or embossing, but both methods have their drawbacks. Weaving patterns reveals them on both sides of the weave. While embossing solves the problem of patterns showing on the underlying material, it places certain demands on the weave itself. To maintain the durability of the embossing, polyester is generally the most suitable material, thus limiting the choice of material. Even the depth of the embossing affects the durability of the pattern; deeper embossing alters the appearance of the weave, leading to unevenness and ripples. Furthermore, embossing molds are unique; any changes to the pattern size or lettering require a new mold to achieve the final embossed effect, limiting its applicability.

[0003] Engraving techniques are relatively mature in the market, and there are specific requirements for engraving equipment used on textiles. However, conventional engraving machines can only fix the material before engraving. In some related technologies, the textile is manually fed, the entire piece of textile is fixed under the laser engraving head, and then the laser engraving head is activated to engrave the textile. After engraving, the engraved textile is manually removed, and then the next piece of textile to be engraved is fed. The operation is relatively cumbersome and cannot meet the needs of continuous engraving. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a laser engraving machine that does not require custom molds, has low requirements for the material of the fabric itself, is highly flexible in use, can meet the continuous engraving processing of elastic bands, is easy to use, and produces high-quality engraved products.

[0005] The present invention also proposes a laser engraving method for elastic bands using the aforementioned laser engraving machine.

[0006] The laser engraving machine according to the present invention comprises:

[0007] A workbench, on top of which a laser engraving head is mounted;

[0008] A positioning unit is installed on the worktable, and the positioning unit is used to position the strip-shaped elastic band;

[0009] The conveying unit is arranged below the end surface of the workbench, and comprises a first conveying belt assembly and a second conveying belt assembly, the first conveying belt assembly and the second conveying belt assembly are respectively arranged on two sides of the workbench, and the elastic belt sequentially passes through the first conveying belt assembly, the positioning unit and the second conveying belt assembly.

[0010] The tensioning unit comprises a first belt tightening assembly and a second belt tightening assembly, the first belt tightening assembly is arranged on a side of the first conveying belt assembly away from the workbench, the second belt tightening assembly is arranged on a side of the second conveying belt assembly away from the workbench, and the first belt tightening assembly and the second belt tightening assembly are used for driving the elastic belt to move away from the workbench.

[0011] The control unit is used for controlling the positioning unit, the conveying unit and the tensioning unit.

[0012] The laser engraving machine has at least the following beneficial effects: the elastic belt is positioned on the workbench through the positioning unit, is tensioned through the tensioning unit, is step-by-step conveyed through the conveying unit, and is continuously laser-engraved by the laser engraving head, so that the operation is convenient, the flexibility of the engraved pattern is higher, and the quality of the engraved product is better.

[0013] The laser engraving machine comprises a positioning unit, a conveying unit, a tensioning unit and a control unit.

[0014] The laser engraving machine comprises a positioning unit, a conveying unit, a tensioning unit and a control unit.

[0015] The laser engraving machine comprises a positioning unit, a conveying unit, a tensioning unit and a control unit.

[0016] The laser engraving machine comprises a positioning unit, a conveying unit, a tensioning unit and a control unit.

[0017] The laser engraving machine comprises a positioning unit, a conveying unit, a tensioning unit and a control unit.

[0018] The laser engraving machine comprises a first belt feeding assembly and a second belt feeding assembly, the first belt feeding assembly comprises a first driving motor, a first driving roller and a first pressing roller, the first driving roller and the first pressing roller press against two sides of the elastic belt respectively and drive the elastic belt to convey towards one side of the workbench, the second belt feeding assembly comprises a second driving motor, a second driving roller and a second pressing roller, the second driving roller and the second pressing roller press against two sides of the elastic belt respectively and drive the elastic belt to convey towards the side away from the workbench.

[0019] The laser engraving machine comprises a first driving motor and a second driving motor, the first driving motor and the second driving motor rotate at different speeds.

[0020] The laser engraving machine comprises a first belt feeding assembly and a second belt feeding assembly, the first belt feeding assembly comprises a first driving motor, a first connecting disc and a plurality of first belt poking rods, the first driving motor drives the first connecting disc to rotate and drives the first belt poking rods to rotate around the center line of the first connecting disc, so as to repeatedly poke the elastic belt along the side away from the workbench.

[0021] The elastic band laser engraving method according to the present invention includes a worktable, on which a laser engraving head is mounted; a positioning unit mounted on the worktable, the positioning unit including a camera and two magnetic seats, the elastic band being provided with an identification pattern for visual recognition by the camera, the two magnetic seats being arranged linearly at intervals, the elastic band passing between the two magnetic seats, and both sides of the elastic band abutting against the two magnetic seats respectively; a conveying unit disposed below the end face of the worktable, the conveying unit including a first conveyor belt assembly and a second conveyor belt assembly, the first conveyor belt assembly and the second conveyor belt assembly being located on opposite sides of the worktable, the elastic band sequentially passing through the first conveyor belt assembly, the positioning unit and the second conveyor belt assembly, the first conveyor belt assembly and the second conveyor belt assembly rotating at a differential speed; and a tensioning unit including a first tensioning assembly and a second tensioning assembly, the first tensioning assembly being located on the side of the first conveyor belt assembly away from the worktable, the second tensioning assembly being located on the side of the second conveyor belt assembly away from the worktable, both the first tensioning assembly and the second tensioning assembly repeatedly moving the elastic band along the side away from the worktable; A control unit is used to control the positioning unit, the conveying unit, and the tensioning unit; the elastic band laser engraving method includes the following steps: Threading the band: the elastic band sequentially passes through the first belt-attaching assembly, the first belt-feeding assembly, the magnetic seat, the second belt-feeding assembly, and the second belt-attaching assembly; Attaching the band: after threading, the tensioning unit is activated, and the first belt-attaching assembly and the second belt-attaching assembly repeatedly flick the two ends of the elastic band toward the side away from the worktable to tension the elastic band; Feeding the band: after threading, the conveying unit is activated, and the elastic band passes through the first belt-feeding assembly and the second belt-attaching assembly. The two belt feeding assemblies work together to transport the elastic belt on the worktable. By adjusting the differential speed of the first and second belt feeding assemblies, the elastic belt can be continuously transported under balanced tension. Positioning: During belt feeding, the camera recognizes the marking pattern on the elastic belt, pauses the first and second belt feeding assemblies, and the elastic belt stops transporting. Engraving: After positioning, the laser engraving head performs laser engraving on the elastic belt. After engraving, the belt feeding, positioning, and engraving steps are repeated in sequence to perform laser engraving on the elastic belt at the next workstation.

[0022] The elastic band laser engraving method according to the present invention has at least the following beneficial effects: the elastic band is fed through the threading step, and then the tape-laying and tape-feeding steps are performed. When the camera recognizes the marking pattern on the elastic band, the tape feeding is paused, and then the elastic band is laser engraved using a laser engraving head. After processing, the tape feeding, positioning, and engraving steps are repeated. Without manual intervention, the continuous engraving processing of the fabric around each marking pattern of the elastic band is automatically realized.

[0023] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and the attendant drawings or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood by considering the following detailed description, from which the singular aspects become apparent.

[0025] Figure 1 It is a whole structure schematic view of the laser engraving machine of the embodiment of the present application;

[0026] Figure 2 It is a structure schematic view of the positioning assembly of the laser engraving machine of the embodiment of the present application;

[0027] Figure 3 It is an exploded schematic view of the positioning assembly of the laser engraving machine of the embodiment of the present application;

[0028] Figure 4 It is a structure schematic view of the first belt beating assembly of the laser engraving machine of the embodiment of the present application;

[0029] Figure 5 It is a process flow chart of the elastic belt laser engraving method of the embodiment of the present application.

[0030] BRIEF DESCRIPTION OF DRAWINGS

[0031] Workbench 100; laser engraving head 110; camera 120;

[0032] Positioning unit 200; magnetic seat 210; mounting groove 211; compression roller 220; mounting shaft 221;

[0033] First belt feeding assembly 310; first driving roller 311; first compression roller 312; second belt feeding assembly 320; second driving roller 321; second compression roller 322;

[0034] First belt beating assembly 410; first driving motor 411; first connecting disc 412; first belt beating rod 413; second belt beating assembly 420;

[0035] Control unit 500;

[0036] Elastic belt 600;

[0037] S100: threading; S200: belt beating; S300: belt feeding; S400: positioning; S500: engraving. DETAILED DESCRIPTION

[0038] Embodiments of the present application are described below in the detailed description and illustrated in the accompanying drawings by which like or similar elements, structures and / or materials may have the same reference numeral. Embodiments described below are examples for explaining the present application and are not intended to limit the present application.

[0039] In the description of the present application, if the orientation description, such as up, down, front, back, left, right, and the like, is involved, the orientation or position relationship shown in the drawings is based on the orientation or position relationship, which is only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0040] In the description of the present application, if several meanings are one or more, the meaning of multiple is two or more, greater than, less than, more than, and the like are understood as not including the number, above, below, and the like are understood as including the number. If the first, second, and the like are described, they are only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of technical features indicated.

[0041] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0042] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0043] The narrow elastic fabric can achieve the effect of pattern by weaving, or realize the pattern or character on the belt by embossing post-processing, but both of the two ways have their own shortcomings. Among them, the pattern is exposed on both sides of the belt after weaving. Although the embossing process can solve the problem of pattern exposure on the bottom layer, it has certain requirements for the belt body. In order to maintain the durability of the embossed belt body, the use of polyester material is relatively ideal, so the selection of belt body material has certain limitations. Even the depth of embossing will affect the durability of the pattern. When it is deeper, it will change the appearance of the belt body, which will lead to the problem of uneven belt body. In addition, the embossing die is unique, and the size of the pattern or the type of character must be modified by remaking the die to achieve the final embossing effect. The use is limited, and the applicability is poor.

[0044] The engraving process on the market is relatively mature, and the engraving equipment for textiles also has specific requirements. However, the conventional engraving machine can only fix the material first and then engrave. In some related technologies, the textile cloth is manually loaded, and the whole piece of textile cloth is fixed below the laser engraving head, and then the laser engraving head is started to engrave the textile cloth. After engraving, the engraved textile cloth is manually taken down, and the next textile cloth to be engraved is loaded. The operation is relatively cumbersome and cannot meet the continuous engraving requirement.

[0045] Therefore, as Figure 1As shown, the laser engraving machine provided by the application comprises a workbench 100, a positioning unit 200, a conveying unit, a tensioning unit and a control unit 500, wherein the positioning unit 200 is installed on the workbench 100, the conveying unit is arranged below the end surface of the workbench 100, so that the elastic belt 600 is better pressed to the workbench 100, and the control unit 500 is used for controlling the positioning unit 200, the conveying unit and the tensioning unit. Specifically, the positioning unit 200 is used for positioning the elastic belt 600 in a strip shape, and a laser engraving head 110 is installed above the workbench 100, and the laser engraving head 110 is used for laser engraving processing of the elastic belt 600. Specifically, the conveying unit comprises a first belt conveying assembly 310 and a second belt conveying assembly 320, the first belt conveying assembly 310 and the second belt conveying assembly 320 are respectively located on both sides of the workbench 100, and the elastic belt 600 passes through the first belt conveying assembly 310, the positioning unit 200 and the second belt conveying assembly 320 in sequence. Further, the tensioning unit comprises a first belt tensioning assembly 410 and a second belt tensioning assembly 420, the first belt tensioning assembly 410 is located on the side of the first belt conveying assembly 310 away from the workbench 100, the second belt tensioning assembly 420 is located on the side of the second belt conveying assembly 320 away from the workbench 100, and the first belt tensioning assembly 410 and the second belt tensioning assembly 420 are both used for driving the elastic belt 600 to move away from the workbench 100. It should be noted that the elastic belt 600 is positioned on the workbench 100 through the positioning unit 200, and is tensioned through the tensioning unit, is step-conveyed through the conveying unit, and realizes continuous laser engraving processing of the elastic belt 600 by using the laser engraving head 110, so that the operation is convenient, the flexibility of the engraved pattern is higher, and the quality of the engraved product is better.

[0046] In application, for some requirements of more refined pattern of braid effect, it cannot be achieved by pattern weaving or character pressing processing and the like. However, the laser engraving process of the embodiment can achieve it. It should be noted that the laser engraving machine is processed by software drawing, then output by engraving software and then punched on the surface of the fabric, the pattern can be adjusted in real time according to the engraving effect, without the need of ordering a mold, so that the time and the cost of the mold are greatly saved, and the requirement of the material of the fabric itself is not high, almost any material can achieve the engraving effect and pass the washing test. Since the engraving only adopts laser high energy density to burn a small amount of material on the surface of the fabric, the overall appearance of the fabric is less affected, and therefore it is more suitable for us to make some high-quality products.

[0047] In addition, since the conventional carving machine can only fix the material first and then carve, and for the strip-shaped elastic band 600, since the elastic band 600 has elasticity, too much manual intervention cannot guarantee the positioning and consistency after the material is stretched, and the quality of the finished product needs to be ensured by carving processing in continuous conveying. In some embodiments, the elastic band 600 adopts a continuous carving mode, that is, the elastic band 600 is subjected to laser carving treatment by the laser carving head 110 under the continuous conveying of the conveying unit, and the elastic band 600 does not stop on the workbench 100. Correspondingly, the laser carving head 110 continuously operates, and the surface of the entire elastic band 600 is patterned after carving. In some embodiments of the present application, the elastic band 600 adopts an intermittent carving mode, as shown in Figure 1 The positioning unit 200 includes a camera 120, and the elastic band 600 is provided with an identification pattern for visual identification by the camera 120. The control unit 500 is electrically connected with the camera 120 and is used for reading the visual identification data of the camera 120. When the camera 120 identifies the preset pattern of the elastic band 600, the conveying unit stops running, at this time, the elastic band 600 stays on the workbench 100, and then the laser carving head 110 performs laser carving treatment on the elastic band 600. For example, the elastic band 600 is arranged with a plurality of preset patterns at intervals along the length direction of the elastic band 600, the laser carving head 110 performs carving processing on the surrounding of the identification pattern of the elastic band 600, and then the laser carving head 110 intermittently operates to carve patterns on a plurality of local parts of the elastic band 600 with the preset pattern as the base point. In some embodiments, the preset pattern of the elastic band 600 is one or more of a number, a letter or a figure. For example, the preset pattern is a number “0” or a letter “O”, and after the camera 120 identifies the preset pattern, the center of the “0” or “O” is taken as the positioning base point, and then the positioning base point is taken as the processing base point of the laser carving head 110 to perform laser carving processing on the elastic band 600.

[0048] In some embodiments of the present application, as shown in Figure 2 The positioning unit 200 includes a magnetic seat 210, and the workbench 100 has magnetism. The magnetic seat 210 is magnetically connected with the workbench 100, and the position of the magnetic seat 210 can be conveniently adjusted, so as to adjust the conveying position of the elastic band 600 on the workbench 100, and the adjustment is convenient. In some embodiments, the magnetic seat is used for positioning the elastic band, for example, the magnetic seat is provided with a conveying groove (not shown in the figure), and the width of the conveying groove matches the width of the elastic band. The elastic band is conveyed in the conveying groove. In some embodiments of the present application, as shown in Figure 2As shown, the magnetic seat 210 has two, two magnetic seats 210 are linearly spaced, the elastic band 600 is arranged between the two magnetic seats 210, and the two sides of the elastic band 600 are respectively in abutment with the two magnetic seats 210. By adjusting the distance between the opposite side walls of the two magnetic seats 210 to limit the position of the elastic band 600 in the width direction, elastic bands 600 of different widths can be adapted. In some embodiments, after the elastic band 600 of different width specifications is limited by the two magnetic seats 210, the center line of the elastic band 600 is at the same position, which better adapts to the laser engraving head 110 located above the workbench 100, for example, the laser engraving head 110 is directly fixed and installed above the workbench 100, without horizontal movement.

[0049] In some embodiments of the present application, as shown in Figure 2 and Figure 3 As shown, the magnetic seat 210 is provided with a pressing roller 220, the pressing roller 220 is in abutment with the upper end surface of the elastic band 600, the magnetic seat 210 is provided with a mounting groove 211, and the pressing roller 220 is provided with a mounting shaft 221, the mounting shaft 221 is mounted in the mounting groove 211. By pressing the elastic band 600 with the pressing roller 220, the elastic band 600 is better limited between the two magnetic seats 210 and in abutment with the opposite side walls of the magnetic seat 210, so that the conveying accuracy of the elastic band 600 on the workbench 100 is higher, and the occurrence of elastic band 600 deviation is reduced. In addition, the pressing roller 220 makes the object more flatly attached to the cross section of the engraving processing, ensuring the engraving effect. Among them, different width pressing rollers 220 are used for elastic bands 600 of different widths, and in some embodiments, the mounting shaft 221 is made of magnetic material, and after the mounting shaft 221 is placed in the mounting groove 211, it is magnetically adsorbed with the groove wall of the mounting groove 211, and then the disassembly and replacement of the pressing roller 220 are more convenient.

[0050] In some embodiments of the present application, as shown in Figure 1As shown, the first belt feeding assembly 310 includes a first driving motor, a first driving roller 311 and a first pressing roller 312, the first driving roller 311 and the first pressing roller 312 respectively press against two sides of the elastic belt 600 and drive the elastic belt 600 to convey toward one side of the workbench 100; the second belt feeding assembly 320 includes a second driving motor, a second driving roller 321 and a second pressing roller 322, the second driving roller 321 and the second pressing roller 322 respectively press against two sides of the elastic belt 600 and drive the elastic belt 600 to convey away from one side of the workbench 100. The elastic belt 600 adopts a double driving arrangement, no matter whether the elastic belt 600 is fed onto the workbench 100 or exits from the workbench 100, the elastic belt 600 is driven by power, which can better adjust and balance the tension of the elastic belt 600 on the workbench 100, and effectively avoid the situation that the elastic belt 600 is excessively stretched to cause the thickness of the elastic belt 600 to become thin. Further, the first driving motor and the second driving motor rotate at different speeds. Since the elastic belt 600 has elasticity, if the first driving motor and the second driving motor rotate at the same speed, after running for a period of time, the elastic belt 600 will become looser and looser, therefore, the first driving motor and the second driving motor must rotate at a slightly different speed ratio, so that the elastic belt 600 is in a balanced tension. It should be noted that the speed ratio of the first driving motor and the second driving motor will be slightly adjusted according to the thickness and opening of the elastic belt 600. In some embodiments, when the speed of the second driving motor is greater than the speed of the first driving motor, the elastic belt 600 is fed from one side of the first belt feeding assembly 310 to the workbench 100, and is fed out toward one side of the second belt feeding assembly 320.

[0051] In some embodiments of the present application, as shown in Figure 1 and Figure 4As shown, the first strip beating assembly 410 includes a first driving motor 411, a first connecting disc 412 and a plurality of first strip beating rods 413, the plurality of first strip beating rods 413 are arranged circumferentially on the first connecting disc 412, the first driving motor 411 is used to drive the first connecting disc 412 to rotate and drive the first strip beating rods 413 to rotate around the center line of the first connecting disc 412, so as to repeatedly pick the elastic band 600 away from the side of the workbench 100. It should be noted that the first strip beating assembly 410 does not hard pull the elastic band 600, but repeatedly picks the elastic band 600 away from the side of the first strip beating assembly 410, which can slightly pull the elastic band 600 between the first strip beating assembly 410 and the first strip beating assembly 410 to avoid the situation that the elastic band 600 is wound and affects the effect of entering the first driving roller 311. Wherein, the elastic band 600 is arranged between the first driving roller 311 and the first pressing roller 312, and is respectively connected with the first driving roller 311 and the first pressing roller 312. Similarly, the second strip beating assembly 420 includes a second driving motor, a second connecting disc and a second strip beating rod, and the structure and function of the second strip beating assembly 420 can refer to the structure and function of the first strip beating assembly 410, which will not be described in detail here.

[0052] According to the elastic band laser engraving method of the embodiment of the present application, as known from the above, Figures 1 to 4 , including a workbench 100, a laser engraving head 110 is installed above the workbench 100; a positioning unit 200 is installed on the workbench 100, the positioning unit 200 includes a camera 120 and two magnetic seats 210, the elastic band 600 is provided with an identification pattern for visual identification by the camera 120, the two magnetic seats 210 are linearly and spacedly arranged, the elastic band 600 is arranged between the two magnetic seats 210, and the two sides of the elastic band 600 are respectively in abutment with the two magnetic seats 210; a conveying unit is arranged below the end face of the workbench 100, the conveying unit includes a first strip feeding assembly 310 and a second strip feeding assembly 320, the first strip feeding assembly 310 and the second strip feeding assembly 320 are respectively located on the two sides of the workbench 100, the elastic band 600 sequentially passes through the first strip feeding assembly 310, the positioning unit 200 and the second strip feeding assembly 320, and the first strip feeding assembly 310 and the second strip feeding assembly 320 rotate at different speeds; a tensioning unit includes a first strip beating assembly 410 and a second strip beating assembly 420, the first strip beating assembly 410 is located on the side of the first strip feeding assembly 310 away from the workbench 100, the second strip beating assembly 420 is located on the side of the second strip feeding assembly 320 away from the workbench 100, and the first strip beating assembly 410 and the second strip beating assembly 420 repeatedly pick the elastic band 600 away from the side of the workbench 100; a control unit 500 is used to control the positioning unit 200, the conveying unit and the tensioning unit.

[0053] Again referring to Figure 5, the elastic band laser engraving method according to the embodiment of the present application comprises the following steps:

[0054] S100, threading: the elastic band 600 passes through the first banding assembly 410, the first band feeding assembly 310, the magnetic seat 210, the second band feeding assembly 320 and the second banding assembly 420 in sequence;

[0055] S200, banding: after threading, the tensioning unit is started, and the first banding assembly 410 and the second banding assembly 420 repeatedly pick the two ends of the elastic band 600 away from the side of the workbench 100 to tension the elastic band 600;

[0056] S300, band feeding: after threading, the conveying unit is started, and the elastic band 600 is conveyed on the workbench 100 through the cooperation of the first band feeding assembly 310 and the second band feeding assembly 320, and through the differential cooperation of the first band feeding assembly 310 and the second band feeding assembly 320, the elastic band 600 can be continuously conveyed in a balanced tension state;

[0057] S400, positioning: in the band feeding, the camera 120 recognizes the identification pattern on the elastic band 600, and the first band feeding assembly 310 and the second band feeding assembly 320 are paused, and the elastic band 600 is paused for conveying;

[0058] S500, engraving: after positioning, the laser engraving head 110 performs laser engraving processing on the elastic band 600;

[0059] After engraving, the band feeding, positioning and engraving steps are sequentially cycled to perform laser engraving processing on the next station of the elastic band 600.

[0060] It should be noted that the elastic band 600 is loaded through the threading step, then the banding step and the band feeding step are performed, when the camera 120 recognizes the identification pattern on the elastic band 600, the band feeding is paused, then the laser engraving head 110 is used to perform laser engraving processing on the elastic band 600; after processing, the band feeding, positioning and engraving steps are repeated, without manual intervention, and the continuous engraving processing of the cloth around each identification pattern of the elastic band 600 is automatically realized.

[0061] In addition, the laser-engraved pattern will not be exposed on the back of the fabric, unlike the patterned fabric, which will be exposed on both sides of the band body; the laser-engraved pattern can be more delicate, saving time and cost of production; because the pattern is output by software, it is very convenient to adjust, and the engraving can be adjusted at any time, unlike the pressure letter band which needs to be customized with a mold and cannot be adjusted casually. Moreover, the laser-engraving processing pattern is more environmentally friendly, unlike digital printing which uses many chemicals for front and back treatment of the fabric; the laser-engraving is based on the principle of melting the yarn on the surface of the fabric through high energy density characteristics, and the surface pattern of the fabric can have a light and shade effect with a certain touch feeling.

[0062] Other configurations and operations of the elastic band laser engraving method according to the embodiments of the present application are known to those skilled in the art, and are not described in detail here.

[0063] The embodiments of the present application are described in detail above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application.

Claims

1. A laser engraving machine, characterized in that, include: A workbench, on top of which a laser engraving head is mounted; A positioning unit is installed on the worktable. The positioning unit is used to position a strip-shaped elastic band. The positioning unit includes a camera and a magnetic base. The elastic band is provided with a marking pattern for visual recognition by the camera. A control unit is electrically connected to the camera and is used to read the visual recognition data of the camera. The worktable is magnetic. The magnetic base is magnetically connected to the worktable and is used to position the elastic band. There are two magnetic bases, which are arranged linearly at intervals. The elastic band passes between the two magnetic bases, and both sides of the elastic band abut against the two magnetic bases respectively. A pressure roller is installed on the magnetic base. The pressure roller abuts against the upper end surface of the elastic band. The magnetic base is provided with a mounting groove. The pressure roller is provided with a mounting shaft. The mounting shaft is mounted on the mounting shaft. A conveying unit is disposed below the end face of the workbench. The conveying unit includes a first belt feeding assembly and a second belt feeding assembly. The first belt feeding assembly and the second belt feeding assembly are respectively located on both sides of the workbench. The elastic belt passes through the first belt feeding assembly, the positioning unit and the second belt feeding assembly in sequence. The first belt feeding assembly and the second belt feeding assembly rotate at different speeds. The tensioning unit includes a first belt-attaching assembly and a second belt-attaching assembly. The first belt-attaching assembly is located on the side of the first belt-feeding assembly away from the worktable, and the second belt-attaching assembly is located on the side of the second belt-feeding assembly away from the worktable. Both the first and second belt-attaching assemblies are used to drive the elastic belt to move along the side away from the worktable. The first belt-attaching assembly includes a first drive motor, a first connecting disc, and a first belt-attaching rod. There are multiple first belt-attaching rods, which are circumferentially arranged on the first connecting disc. The first drive motor is used to drive the first connecting disc to rotate and drive the first belt-attaching rods to rotate around the center line of the first connecting disc, so as to repeatedly flick the elastic belt along the side away from the worktable. A control unit is used to control the positioning unit, the conveying unit, and the tensioning unit.

2. The laser engraving machine according to claim 1, characterized in that: The first belt feeding assembly includes a first drive motor, a first drive roller, and a first pressure roller. The first drive roller and the first pressure roller respectively press against both sides of the elastic belt and drive the elastic belt to one side of the worktable. The second belt feeding assembly includes a second drive motor, a second drive roller, and a second pressure roller. The second drive roller and the second pressure roller respectively press against both sides of the elastic belt and drive the elastic belt to the side away from the worktable.

3. The laser engraving machine according to claim 2, characterized in that: The first drive motor and the second drive motor rotate at a differential speed.

4. Laser engraving method for elastic bands, including: A workbench, on top of which a laser engraving head is mounted; A positioning unit is installed on the workbench. The positioning unit includes a camera and two magnetic seats. The elastic band is provided with a marking pattern for visual recognition by the camera. The two magnetic seats are arranged linearly at intervals. The elastic band passes between the two magnetic seats, and both sides of the elastic band abut against the two magnetic seats respectively. A conveying unit is disposed below the end face of the workbench. The conveying unit includes a first belt feeding assembly and a second belt feeding assembly. The first belt feeding assembly and the second belt feeding assembly are respectively located on both sides of the workbench. The elastic belt passes through the first belt feeding assembly, the positioning unit and the second belt feeding assembly in sequence. The first belt feeding assembly and the second belt feeding assembly rotate at different speeds. The tensioning unit includes a first belt-tapping assembly and a second belt-tapping assembly. The first belt-tapping assembly is located on the side of the first belt-feeding assembly away from the worktable, and the second belt-tapping assembly is located on the side of the second belt-feeding assembly away from the worktable. Both the first belt-tapping assembly and the second belt-tapping assembly repeatedly tug the elastic belt along the side away from the worktable. A control unit is used to control the positioning unit, the conveying unit, and the tensioning unit; Its characteristics include the following steps: Threading: The elastic band passes sequentially through the first belt-attaching assembly, the first belt-feeding assembly, the magnetic seat, the second belt-feeding assembly, and the second belt-attaching assembly; Belt tensioning: After the belt is threaded, the tensioning unit is activated. The first belt tensioning component and the second belt tensioning component repeatedly flick the two ends of the elastic belt toward the side away from the worktable to tension the elastic belt. Belt feeding: After the belt is threaded, the conveying unit is started. The elastic belt is conveyed on the worktable through the cooperation of the first belt feeding assembly and the second belt feeding assembly. Furthermore, by adjusting the differential speed cooperation of the first belt feeding assembly and the second belt feeding assembly, the elastic belt can be continuously conveyed under balanced tension. Positioning: During the belt feeding process, the camera recognizes the marking pattern on the elastic belt, pauses the first belt feeding component and the second belt feeding component, and the elastic belt stops feeding; Engraving: After positioning, the laser engraving head performs laser engraving on the elastic band; After engraving, the feeding, positioning, and engraving steps are repeated in sequence to perform laser engraving processing on the elastic belt at the next work station.

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