Multifunctional sewing equipment and control method thereof

Abstract

The invention discloses sewing equipment and aims to provide multifunctional sewing equipment which is high in automation degree, convenient to sew and cut and capable of automatically replacing a shuttle peg and a control method of the multifunctional sewing equipment. The sewing machine can cut the cloth and automatically replace the shuttle peg while sewing the cloth, the pressing frame arranged on the bottom plate presses the cloth, the cloth is kept fixed in the sewing process, the sewn cloth is cut through the laser cutting device, and the sewing efficiency is improved. The laser cutting device emits laser at a laser emitting tube to cloth through a laser reflecting mechanism, so that cutting of the cloth is completed, the shuttle changing device is arranged, the sewing state can be automatically detected, whether a shuttle peg and a shuttle shell are abnormal or not is judged, automatic detection and replacement of the shuttle shell are achieved, full-automatic proceeding of the whole process is achieved, and the production efficiency is improved. The invention is applicable to the technical field of sewing machines.

Description

Technical Field

[0001] This invention relates to a sewing device, and more specifically, to a multifunctional sewing device and its control method. Background Technology

[0002] A sewing machine is a machine that sews fabric together with thread. Automated sewing machines replace manual sewing of fabric. Automated sewing machines can usually cut fabric automatically, while traditional fabric cutting structures usually use mechanical structures for cutting. However, mechanical cutting requires keeping the fabric taut, which means that the fabric needs to be pressed tightly during the cutting process. The overall operation is relatively complicated, and after long-term use, the wear and tear of the cutting structure will lead to a deterioration in the cutting effect of the fabric. With the development of laser cutting technology, automatic sewing machines using laser cutting have entered the market and been put into use. The laser tube generates a laser and guides the generated laser to the cutting point of the fabric, creating a focal point on the fabric. By moving the laser head or the fabric, the fabric is cut.

[0003] Currently, most multi-functional sewing equipment on the market requires manual feeding and cannot detect the condition of the stitches during the sewing process. It also cannot automatically replace the bobbin and bobbin, requiring manual bobbin replacement after the machine is stopped. This is difficult to operate and requires machine downtime for maintenance, thus reducing processing efficiency. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a multifunctional sewing device and its control method that is highly automated, convenient for sewing and cutting, and can automatically change the bobbin.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multifunctional sewing device, including a base plate and a sewing device disposed on the base plate, wherein a laser cutting device is also provided on one side of the sewing device, the laser cutting device including a laser emitting tube disposed along the length direction of the sewing device and a laser reflecting structure disposed on the laser emitting tube, the laser reflecting structure being used to adjust the orientation of the laser emitted from the laser emitting tube, and a shuttle changing device being provided at the bottom of the sewing device, the shuttle changing device being configured to replace the shuttle case of the sewing machine.

[0006] The present invention is further configured such that: the sewing device includes a mounting frame and a sewing assembly disposed on one end of the mounting frame near the laser reflective structure; the sewing assembly includes a drive cylinder, a sewing needle disposed on the drive cylinder, and a presser foot disposed at the bottom of the sewing needle; the lower end of the sewing needle is also provided with a mounting groove, and a bobbin case is disposed in the mounting groove.

[0007] The invention is further configured such that: the base plate is also provided with a pressing frame assembly, the pressing frame assembly includes a drive motor and a lead screw mounted on the drive motor, the lead screw is provided with a mounting tray, the mounting tray is connected to the lead screw in a transmission manner, the mounting tray is also provided with a transverse guide rail and a pressing table mounted on the transverse guide rail, the pressing table has a table surface for placing sewing fabric and a pressure plate mounted on the table surface, and the table surface is also provided with a clamping device.

[0008] Preferably, the mounting tray is further provided with guide rails parallel to the lead screw at both ends, and a clamping block is provided between the mounting tray and the guide rails. The guide rails are configured to fix and guide the mounting tray when it moves.

[0009] Preferably, the shuttle changing device includes a shuttle housing disc and a waste trough disposed at the bottom of the shuttle housing disc. A plurality of shuttle housings are evenly arranged on the shuttle housing disc along its circumference. A material changing assembly is also provided between the shuttle housing disc and the sewing device. The material changing assembly includes a mounting plate, a material changing motor disposed on the mounting plate, and a clamping plate that is drivenly connected to the material changing motor. The clamping plate is also provided with a chuck. The clamping plate is configured to move between the shuttle housing disc and the sewing device.

[0010] The invention is further configured such that: the bottom of the laser reflection structure is also provided with a dust suction pipe, which is used to extract the dust and smoke generated during laser cutting of the fabric.

[0011] This application also discloses a control method for a multifunctional sewing device, including the following steps: S11, based on the size parameters of the fabric to be sewn, adjust the relative position of the presser assembly on the base plate so that when the presser assembly clamps the fabric, the position of the sewing needle matches the sewing start position of the fabric.

[0012] S12. The fabric is sewn. During the sewing process, the drive motor drives the lead screw to control the pressure frame assembly to move at a constant speed away from the sewing needle to sew the fabric.

[0013] S13. During the sewing process, the fabric is inspected. If the sewing of the fabric is completed, the process jumps to S4 to cut the fabric. Otherwise, the frame pressing assembly continues to move.

[0014] S14. The frame pressing assembly moves the fabric again, and the starting position of the part of the fabric to be cut is matched with the exit position of the laser reflection structure.

[0015] S15. The suction pipe starts and adsorbs the fabric at the bottom of the laser reflective structure, keeping the fabric above the suction pipe flat.

[0016] S16. Start the laser cutting device. The laser emitted from the laser emitting tube is reflected by the laser reflection structure to the vacuum tube, cutting the fabric on the vacuum tube and completing the sewing and cutting of the fabric.

[0017] Preferably, the control method further includes bobbin case detection, comprising the following steps: S21, during the sewing process, the sewing status of the sewing needle is detected. If the sewing status is abnormal, the process jumps to S22 to detect the bobbin case status; otherwise, the bobbin case status is normal and the sewing continues.

[0018] S22. Detect the remaining thread amount of the current bobbin case. If the remaining thread amount of the current bobbin case is <30%, it is determined that the current bobbin case needs to be replaced, and jump to S24 to replace the bobbin case. Otherwise, jump to S23 to detect the stitch.

[0019] S23. Detect the stitch. If the stitch is normal, the current bobbin case is normal and does not need to be replaced. If the stitch is abnormal, the current bobbin case is abnormal and needs to be replaced. Jump to S24 to replace the bobbin case.

[0020] S24. The shuttle shell disk rotates, causing the shuttle shell on the shuttle shell disk to move to below the material changing assembly;

[0021] S25. The clamping plate of the material changing assembly moves so that the claws on the clamping plate match the position of the bobbin inside the sewing assembly.

[0022] S26. The chucks grip the bobbin inside the sewing assembly, causing the bobbin inside the sewing assembly to fall off. At the same time, the clamping plate of the material changing assembly moves again, causing the chucks on the clamping plate to move to the bobbin disc.

[0023] S27. After the clamping plate has moved, release the chucks so that the replacement shuttle shell inside the chucks falls into the waste trough.

[0024] S28. The chuck grabs the qualified bobbin from the bobbin case tray, and at the same time the clamping plate drives the chuck to move to the mounting slot of the sewing component to install the bobbin.

[0025] By adopting the above technical solution, the beneficial effects are as follows: 1. This application, by setting a laser cutting device and a shuttle changing device on the sewing machine, enables simultaneous fabric cutting and automatic shuttle changing while the sewing machine is processing the fabric. Specifically, this application uses a pressure frame set on the base plate to press the fabric, keeping it fixed during the sewing process. Simultaneously, the pressure frame is driven by a drive motor and a lead screw, which drives the pressure frame to move the fabric during sewing, thereby achieving fabric seam joining or sewing of fabric surface patterns. After completion, the fabric is cut using a laser cutting device. This device directs the laser from the laser emitting tube onto the fabric via a laser reflection mechanism, thus completing the cutting. The fabric cutting can also be driven by a pressure frame, resulting in a high degree of automation, improved processing efficiency, and consistent finished products. Furthermore, the inclusion of a shuttle changing device automatically detects the sewing status and determines whether the bobbin and bobbin case are abnormal, enabling automatic detection and replacement of the bobbin case. This achieves full automation of the entire process, significantly reducing downtime and improving processing efficiency.

[0026] 2. Furthermore, in the laser cutting process, to ensure the cutting effect, a suction pipe is installed at the bottom of the laser reflective structure. The suction pipe can adsorb the fabric to ensure its flatness. High-precision cutting of the fabric is achieved through the laser emitting tube and the laser reflective structure. The cutting is completed simply by sucking up the fabric. Compared with traditional mechanical structures, there is no need to apply multiple sets of clamping forces to the fabric, and the wear of the cutting tool can be avoided. At the same time, the cutting path of the fabric is precisely guided by the movement of the pressure frame assembly to drive the fabric movement. In addition, the suction pipe effectively handles the dust generated during the cutting process, optimizes the edge quality of laser cutting, and improves the cutting effect of the fabric.

[0027] 3. Simultaneously, during the fabric sewing process, this application uses a pressing table to fix the fabric, ensuring its stability. Furthermore, during sewing, the pressing frame assembly drives the pressing table to drag the fabric away from the sewing components. During this dragging process, the fabric has a large contact area with the base plate, generating friction that keeps the fabric flat. The pressing frame assembly is driven at a constant speed by a drive motor and lead screw, ensuring stitch quality and enabling the sewing of large-sized fabrics. To further guarantee the stitch quality and improve the continuity of the sewing process, a shuttle changing device is installed at the bottom of the sewing device. During sewing, the stitches are detected to determine if there are any abnormalities in the bobbin and bobbin case. For example, during the sewing process, a structure for acquiring images is used to obtain the state of the stitches, and the stitch images are then inspected. This allows the system to obtain the current stitching effect and detect any abnormalities in the bobbin and bobbin case based on the stitching effect. If thread breakage, stitch disorder, or skipped stitches occur, the current bobbin and bobbin case are judged to be abnormal, such as insufficient thread or burrs on the bobbin case. The bobbin case is then replaced. When replacing the bobbin case, a bobbin case tray and a waste trough for placing defective bobbin cases are set up. Several spare bobbin cases are set on the bobbin case tray for easy replacement. The bobbin case tray rotates to position the bobbin case to be replaced at the material pick-up point of the clamping plate. The clamping plate picks up the bobbin case to be replaced and moves it to the installation slot in the sewing device for installation. The positioning of the bobbin case tray is achieved by a sensor. The sensor detects and stops the bobbin case tray at a preset position, realizing a fully automatic processing flow from judgment to replacement. The high degree of automation significantly reduces the frequency of maintenance and downtime, and improves processing efficiency.

[0028] 4. Furthermore, in this application, the above data is processed based on the fabric's dimensional parameters and sewing process to obtain the fabric's clamping position, sewing start position, and cutting position, thereby ensuring the high consistency of the finished fabric. At the same time, the pressure frame assembly can move the fabric relative to the sewing device through the lead screw and the transverse guide rail, thereby realizing the sewing of patterns on the fabric. After sewing is completed, the fabric is cut by a laser cutting device. During the cutting process, the dust suction pipe ensures the flatness of the fabric and the extraction of fumes during the cutting process. During the sewing process, sewing effect detection and component status diagnosis and replacement are realized, ensuring the full automation and consistency of the fabric positioning, sewing processing, and cutting process, reducing quality problems caused by human judgment errors or operational delays, and significantly improving the reliability of the entire processing flow. Attached Figure Description

[0029] Figure 1 This is a schematic diagram illustrating the specific structure of an embodiment of a multifunctional sewing device and its control method according to the present invention;

[0030] Figure 2 This is a schematic diagram of the specific structure of a laser cutting device according to an embodiment of a multifunctional sewing equipment and its control method of the present invention;

[0031] Figure 3 This is a schematic diagram of the specific structure of the pressure frame assembly in an embodiment of a multifunctional sewing device and its control method according to the present invention;

[0032] Figure 4 This is a schematic diagram of the shuttle changing device in an embodiment of a multifunctional sewing device and its control method according to the present invention.

[0033] Figure 5 This is a flowchart illustrating the control method of an embodiment of a multifunctional sewing device and its control method according to the present invention.

[0034] Figure 6 This is a flowchart of a bobbin case detection method according to an embodiment of a multifunctional sewing device and its control method of the present invention;

[0035] The attached diagram contains the following labels: 1. Base plate; 2. Sewing device; 21. Mounting frame; 22. Sewing assembly; 221. Drive cylinder; 222. Sewing needle; 223. Presser foot; 224. Mounting slot; 3. Laser cutting device; 31. Laser emitting tube; 32. Laser reflecting structure; 4. Shuttle changing device; 41. Shuttle shell tray; 42. Waste trough; 43. Material changing assembly; 431. Mounting plate; 432. Material changing motor; 433. Clamping plate; 434. Claw; 5. Shuttle shell; 6. Pressing frame assembly; 61. Drive motor; 62. Lead screw; 63. Mounting tray; 64. Transverse guide rail; 65. Pressing table; 651. Table surface; 652. Pressing plate; 653. Clamping element; 66. Guide rail; 67. Clamping block; 7. Dust suction pipe. Detailed Implementation

[0036] Reference Figures 1 to 6 The embodiments of the multifunctional sewing device and its control method of the present invention are further described below.

[0037] For ease of explanation, spatial relative terms such as “up,” “down,” “left,” and “right” are used in the embodiments to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figures is inverted, an element described as being “down” of other elements or features would be positioned “up” of those other elements or features. Therefore, the exemplary term “down” can encompass both up and down orientations. The device may be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0038] Moreover, relational terms such as “first” and “second” are used merely to distinguish one component from another that has the same name, without necessarily requiring or implying any such actual relationship or order between the components.

[0039] A multifunctional sewing device includes a base plate 1 and a sewing device 2 disposed on the base plate 1. A laser cutting device 3 is also provided on one side of the sewing device 2. The laser cutting device 3 includes a laser emitting tube 31 disposed along the length direction of the sewing device 2 and a laser reflecting structure 32 disposed on the laser emitting tube 31. The laser reflecting structure 32 is used to adjust the orientation of the laser emitted from the laser emitting tube 31. A shuttle changing device 4 is also provided at the bottom of the sewing device 2. The shuttle changing device 4 is configured to replace the shuttle case 5 of the sewing machine.

[0040] The sewing device 2 includes a mounting frame 21 and a sewing assembly 22 disposed on one end of the mounting frame 21 near the laser reflection structure 32. The sewing assembly 22 includes a drive cylinder 221, a sewing needle 222 disposed on the drive cylinder 221, and a presser foot 223 disposed at the bottom of the sewing needle 222. The lower end of the sewing needle 222 is also provided with a mounting groove 224, and a bobbin case 5 is disposed in the mounting groove 224.

[0041] The base plate 1 is also provided with a pressing frame assembly 6. The pressing frame assembly 6 includes a drive motor 61 and a lead screw 62 disposed on the drive motor 61. The lead screw 62 is provided with a mounting tray 63. The mounting tray 63 is connected to the lead screw 62 in a transmission manner. The mounting tray 63 is also provided with a transverse guide rail 64 and a pressing table 65 disposed on the transverse guide rail 64. The pressing table 65 has a table surface 651 for placing sewing fabric and a pressure plate 652 disposed on the table surface 651. The table surface 651 is also provided with a clamping element 653.

[0042] Preferably, the mounting tray 63 is further provided with guide rails 66 parallel to the lead screw at both ends, and a clamping block 67 is provided between the mounting tray 63 and the guide rails 66. The guide rails 66 are configured to fix and guide the mounting tray 63 when it moves.

[0043] Preferably, the shuttle changing device 4 includes a shuttle shell disk 41 and a waste material trough 42 disposed at the bottom of the shuttle shell disk 41. A plurality of shuttle shells 5 are evenly arranged along the circumference of the shuttle shell disk 41. A material changing assembly 43 is also provided between the shuttle shell disk 41 and the sewing device 2. The material changing assembly 43 includes a mounting plate 431, a material changing motor 432 disposed on the mounting plate 431, and a clamping plate 433 that is drivenly connected to the material changing motor 432. The clamping plate 433 is also provided with a claw 434. The clamping plate 433 is configured to move between the shuttle shell disk 41 and the sewing device 2.

[0044] The bottom of the laser reflection structure 32 is also provided with a dust suction pipe 7, which is used to extract dust and smoke generated during laser cutting of fabric.

[0045] This application also discloses a control method for a multifunctional sewing device, including the following steps: S11, based on the size parameters of the fabric to be sewn, adjust the relative position of the presser assembly on the base plate so that when the presser assembly clamps the fabric, the position of the sewing needle matches the sewing start position of the fabric.

[0046] S12. The fabric is sewn. During the sewing process, the drive motor drives the lead screw to control the pressure frame assembly to move at a constant speed away from the sewing needle to sew the fabric.

[0047] S13. During the sewing process, the fabric is inspected. If the sewing of the fabric is completed, the process jumps to S4 to cut the fabric. Otherwise, the frame pressing assembly continues to move.

[0048] S14. The frame pressing assembly moves the fabric again, and the starting position of the part of the fabric to be cut is matched with the exit position of the laser reflection structure.

[0049] S15. The suction pipe starts and adsorbs the fabric at the bottom of the laser reflective structure, keeping the fabric above the suction pipe flat.

[0050] S16. Start the laser cutting device. The laser emitted from the laser emitting tube is reflected by the laser reflection structure to the vacuum tube, cutting the fabric on the vacuum tube and completing the sewing and cutting of the fabric.

[0051] Preferably, the control method further includes bobbin case detection, comprising the following steps: S21, during the sewing process, the sewing status of the sewing needle is detected. If the sewing status is abnormal, the process jumps to S22 to detect the bobbin case status; otherwise, the bobbin case status is normal and the sewing continues.

[0052] S22. Detect the remaining thread amount of the current bobbin case. If the remaining thread amount of the current bobbin case is <30%, it is determined that the current bobbin case needs to be replaced, and jump to S24 to replace the bobbin case. Otherwise, jump to S23 to detect the stitch.

[0053] S23. Detect the stitch. If the stitch is normal, the current bobbin case is normal and does not need to be replaced. If the stitch is abnormal, the current bobbin case is abnormal and needs to be replaced. Jump to S24 to replace the bobbin case.

[0054] S24. The shuttle shell disk rotates, causing the shuttle shell on the shuttle shell disk to move to below the material changing assembly;

[0055] S25. The clamping plate of the material changing assembly moves so that the claws on the clamping plate match the position of the bobbin inside the sewing assembly.

[0056] S26. The chucks grip the bobbin inside the sewing assembly, causing the bobbin inside the sewing assembly to fall off. At the same time, the clamping plate of the material changing assembly moves again, causing the chucks on the clamping plate to move to the bobbin disc.

[0057] S27. After the clamping plate has moved, release the chucks so that the replacement shuttle shell inside the chucks falls into the waste trough.

[0058] S28. The chuck grabs the qualified bobbin from the bobbin case tray, and at the same time the clamping plate drives the chuck to move to the mounting slot of the sewing component to install the bobbin.

[0059] This application incorporates a laser cutting device 3 and a shuttle changing device 4 on a sewing machine, enabling simultaneous fabric cutting and automatic shuttle changing while the sewing machine is processing the fabric. Specifically, this application uses a pressure frame mounted on the base plate 1 to press the fabric firmly, keeping it fixed during sewing. The pressure frame is driven by a drive motor 61 and a lead screw 62, allowing it to move the fabric during sewing, thus achieving fabric joining or stitching of patterns. After sewing, the fabric is cut using a laser... The cutting device 3 cuts the fabric. The laser cutting device 3 uses a laser reflection mechanism to direct the laser from the laser emitting tube 31 onto the fabric, thereby completing the cutting of the fabric. The cutting of the fabric can also be driven by the pressure frame, resulting in a high degree of automation, improving processing efficiency, ensuring the consistency of the finished products, and by setting up a shuttle changing device 4, it can automatically detect the sewing status and determine whether the bobbin and shuttle case 5 are abnormal, realizing the automatic detection and replacement of the shuttle case 5. This achieves full automation of the entire process, greatly reducing downtime and improving processing efficiency.

[0060] Furthermore, in order to ensure the cutting effect during the laser cutting process, a dust suction pipe 7 is set at the bottom of the laser reflection structure 32. The dust suction pipe 7 can adsorb the fabric to ensure its flatness. High-precision cutting of the fabric is achieved through the laser emitting tube 31 and the laser reflection structure 32. The cutting is completed simply by sucking up the fabric. Compared with traditional mechanical structures, there is no need to apply multiple sets of clamping forces to the fabric, and the wear of the cutting tool can be avoided. At the same time, the cutting path of the fabric is precisely guided by the movement of the pressure frame assembly 6 to drive the fabric movement. In addition, the dust generated during the cutting process is effectively handled by the dust suction pipe 7, which optimizes the edge quality of laser cutting and improves the cutting effect of the fabric.

[0061] Meanwhile, during the fabric sewing process, the pressing table 65 fixes the fabric, ensuring its stability. During sewing, the pressing frame assembly 6 drives the pressing table 65 to drag the fabric away from the sewing assembly 22. During this dragging, the fabric makes large-area contact with the base plate 1, generating friction that keeps the fabric flat. Simultaneously, the pressing frame assembly 6 is driven at a constant speed by the drive motor 61 and the lead screw 62, ensuring stitch quality and enabling the sewing of large-sized fabrics. Furthermore, to ensure stitch quality and improve the continuity of the sewing process, a shuttle changing device 4 is installed at the bottom of the sewing device 2. During sewing, the stitches are detected to determine if there are any abnormalities in the bobbin and bobbin case 5. For example, during sewing, a structure for acquiring images is used to obtain the stitch status, and the current stitch size is obtained by detecting the stitch image. The system detects whether there are any abnormalities in the current bobbin and bobbin case 5 based on the stitch effect. If there are broken threads, disordered stitches, or skipped stitches, it is determined that the current bobbin and bobbin case 5 are abnormal, such as insufficient thread or burrs on the bobbin case 5. The bobbin case 5 is then replaced. When replacing the bobbin case 5, the bobbin case plate 41 and the waste material tray 42 for placing defective bobbin cases 5 are set up. Several spare bobbin cases 5 set on the bobbin case plate 41 can be easily replaced. The bobbin case plate 41 rotates to position the bobbin case 5 to be replaced at the material pick-up point of the clamping plate 433. The clamping plate 433 picks up the bobbin case 5 to be replaced and moves it to the installation slot 224 in the sewing device 2 for installation. The positioning of the bobbin case plate 41 for the bobbin case 5 is achieved by setting up a sensor. The sensor detects and stops the bobbin case plate 41 at the preset position, realizing a fully automatic processing flow from judgment to replacement. The degree of automation is high, which greatly reduces the frequency of maintenance and downtime, and improves the processing efficiency.

[0062] Furthermore, in this application, the above data is processed based on the fabric's dimensional parameters and sewing process to obtain the fabric's clamping position, sewing start position, and cutting position, thereby ensuring the high consistency of the finished fabric. At the same time, the pressure frame assembly 6 can move the fabric relative to the sewing device 2 through the lead screw 62 and the transverse guide rail 64, thereby realizing the sewing of patterns on the fabric. After sewing is completed, the fabric is cut by the laser cutting device 3. During the cutting process, the dust suction pipe 7 ensures the flatness of the fabric and the absorption of fumes during the cutting process. During the sewing process, sewing effect detection and component status diagnosis and replacement are realized, ensuring the full automation and consistency of the fabric positioning, sewing processing, and cutting process, reducing quality problems caused by human judgment errors or operation delays, and significantly improving the reliability of the entire processing process.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included within the protection scope of the present invention.

Claims

1. A multifunctional sewing device, comprising a base plate (1) and a sewing device (2) disposed on the base plate (1), characterized in that, A laser cutting device (3) is also provided on one side of the sewing device (2). The laser cutting device (3) includes a laser emitting tube (31) arranged along the length of the sewing device (2) and a laser reflecting structure (32) arranged on the laser emitting tube (31). The laser reflecting structure (32) is used to adjust the direction of the laser emitted from the laser emitting tube (31). A shuttle changing device (4) is also provided at the bottom of the sewing device (2). The shuttle changing device (4) is configured to replace the shuttle case (5) of the sewing machine.

2. The multifunctional sewing device according to claim 1, characterized in that, The sewing device (2) includes a mounting frame (21) and a sewing assembly (22) disposed on one end of the mounting frame (21) near the laser reflection structure (32). The sewing assembly (22) includes a drive cylinder (221), a sewing needle (222) disposed on the drive cylinder (221), and a presser foot (223) disposed at the bottom of the sewing needle (222). The lower end of the sewing needle (222) is also provided with a mounting groove (224), and a bobbin case (5) is disposed in the mounting groove (224).

3. The multifunctional sewing device according to claim 1, characterized in that, The base plate (1) is also provided with a pressing frame assembly (6), which includes a drive motor (61) and a lead screw (62) mounted on the drive motor (61). The lead screw (62) is provided with an installation tray (63), which is connected to the lead screw (62) in a transmission manner. The installation tray (63) is also provided with a transverse guide rail (64) and a pressing table (65) mounted on the transverse guide rail (64). The pressing table (65) has a table surface (651) for placing sewing fabric and a pressure plate (652) mounted on the table surface (651). The table surface (651) is also provided with a clamp (653).

4. A multifunctional sewing device according to claim 3, characterized in that, The mounting tray (63) is also provided with guide rails (66) parallel to the lead screw at both ends, and a clamping block (67) is provided between the mounting tray (63) and the guide rails (66). The guide rails (66) are configured to fix and guide the mounting tray (63) when it moves.

5. A multifunctional sewing device according to claim 2, characterized in that, The shuttle changing device (4) includes a shuttle shell plate (41) and a waste trough (42) disposed at the bottom of the shuttle shell plate (41). A plurality of shuttle shells (5) are evenly arranged along the circumference of the shuttle shell plate (41). A material changing assembly (43) is also provided between the shuttle shell plate (41) and the sewing device (2). The material changing assembly (43) includes a mounting plate (431), a material changing motor (432) disposed on the mounting plate (431), and a clamping plate (433) that is drivenly connected to the material changing motor (432). A chuck (434) is also provided on the clamping plate (433). The clamping plate (433) is configured to move between the shuttle shell plate (41) and the sewing device (2).

6. A multifunctional sewing device according to claim 1, characterized in that, The bottom of the laser reflection structure (32) is also provided with a dust suction pipe (7), which is used to extract the dust and smoke generated during laser cutting of the fabric.

7. A control method applicable to a multifunctional sewing device according to any one of claims 1-6, characterized in that, Includes the following steps: S11. Based on the fabric size parameters to be sewn, adjust the relative position of the presser assembly on the base plate so that when the presser assembly clamps the fabric, the position of the sewing needle matches the sewing start position of the fabric. S12. The fabric is sewn. During the sewing process, the drive motor drives the lead screw to control the pressure frame assembly to move at a constant speed away from the sewing needle to sew the fabric. S13. During the sewing process, the fabric is inspected. If the sewing of the fabric is completed, the process jumps to S4 to cut the fabric. Otherwise, the frame pressing assembly continues to move. S14. The frame pressing assembly moves the fabric again, and the starting position of the part of the fabric to be cut is matched with the exit position of the laser reflection structure. S15. The suction pipe starts and adsorbs the fabric at the bottom of the laser reflective structure, keeping the fabric above the suction pipe flat. S16. Start the laser cutting device. The laser emitted from the laser emitting tube is reflected by the laser reflection structure to the vacuum tube, cutting the fabric on the vacuum tube and completing the sewing and cutting of the fabric.

8. The control method for a multifunctional sewing device according to claim 7, characterized in that, The processing method also includes bobbin case detection, which includes the following steps: S21, during the sewing process, the sewing status of the sewing needle is detected. If the sewing status is abnormal, the process jumps to S22 to detect the bobbin case status. Otherwise, the bobbin case status is normal and the sewing continues. S22. Detect the remaining thread amount of the current bobbin case. If the remaining thread amount of the current bobbin case is <30%, it is determined that the current bobbin case needs to be replaced, and jump to S24 to replace the bobbin case. Otherwise, jump to S23 to detect the stitch. S23. Detect the stitch. If the stitch is normal, the current bobbin case is normal and does not need to be replaced. If the stitch is abnormal, the current bobbin case is abnormal and needs to be replaced. Jump to S24 to replace the bobbin case. S24. The shuttle shell disk rotates, causing the shuttle shell on the shuttle shell disk to move to below the material changing assembly; S25. The clamping plate of the material changing assembly moves so that the claws on the clamping plate match the position of the bobbin inside the sewing assembly. S26. The chucks grip the bobbin inside the sewing assembly, causing the bobbin inside the sewing assembly to fall off. At the same time, the clamping plate of the material changing assembly moves again, causing the chucks on the clamping plate to move to the bobbin disc. S27. After the clamping plate has moved, release the chucks so that the replacement shuttle shell inside the chucks falls into the waste trough. S28. The chuck grabs the qualified bobbin from the bobbin case tray, and at the same time the clamping plate drives the chuck to move to the mounting slot of the sewing component to install the bobbin.

Images