Control method of automatic curling machine

Abstract

The invention relates to a control method of an automatic hemming machine, the automatic hemming machine comprises a controller, an inductor, a material supporting mechanism, a conveying mechanism and a movable mechanism, the control method comprises the steps that the conveying mechanism drives a cylindrical fabric to rotate around an axis extending in the left-right direction relative to a material supporting assembly, and the movement speed of the cylindrical fabric is V1; when the inductor detects that the bone position is located above the material supporting assembly, the controller controls the first driving structure to work to conduct the bone position overturning procedure, that is, the bone chamfering plate is driven by the first driving structure to move forwards to the position above the cylindrical fabric from the initial position firstly and then move leftwards to be located on the left side of the first turned edge; the first turning edge is inserted into the annular fabric, then moves downwards to abut against the cylindrical fabric, then moves rightwards to be partially inserted between the annular fabric and the first turning edge and finally moves forwards at the speed V2 to turn over the bone position, and V2 is larger than V1. The controller controls the first driving structure to drive the bone reversing plate to act, and the bone reversing plate abuts against the annular fabric and reliably turns over the bone position when moving forwards.

Description

Technical Field

[0001] This application relates to the field of sewing equipment technology, and in particular to a control method for an automatic hemming machine. Background Technology

[0002] Automatic hemming machines are used to hem the edges of flexible fabrics of a certain thickness. In the garment production process, hemming machines are required for sewing parts such as sleeves or trouser legs. Sleeves include sleeve covers and cuffs, and trouser legs include trouser legs and hems. Sleeve covers and trouser legs are approximately cylindrical and are mainly made by rolling up a piece of fabric and sewing it, so that the seams of the inner walls of the sleeve covers and trouser legs form a seam.

[0003] When using a hemming machine to sew tubular fabrics (cuffs or trouser legs), the inner wall of the tubular fabric is first turned outward to expose the seam. Then, the tubular fabric in the turned-out state is placed on the workpiece placement mechanism of the hemming machine to achieve hemming. However, when current hemming machines hem tubular fabrics, they press the seam to one side. Different garments have different requirements for the direction of seam turning. Therefore, this can only be done manually, which is inefficient and has low production safety. Summary of the Invention

[0004] Therefore, it is necessary to provide a control method for an automatic edge rolling machine to automatically control the flipping of the bone position.

[0005] This application provides a control method for an automatic hemming machine. The automatic hemming machine includes a worktable, a controller, a sensor electrically connected to the controller, and a material support mechanism, a conveying mechanism, and a movable mechanism connected to the worktable. The material support mechanism includes a material support assembly for a tubular fabric to be fitted around the periphery from left to right. The tubular fabric is a fabric with exposed ribs and an open end folded outward to form a first hem. The portion of the tubular fabric excluding the first hem is defined as an annular fabric. The sensor is located above the material support assembly. The movable mechanism includes a reverse rib plate and a first drive structure connected to the reverse rib plate. The first drive structure is located behind the material support assembly. The control method includes:

[0006] The conveying mechanism drives the tubular fabric to rotate relative to the support assembly around an axis extending in the left-right direction, and the movement speed of the tubular fabric is V1.

[0007] When the sensor detects that the bone position is above the support assembly, the controller controls the first drive structure to perform the bone position flipping process. That is, under the drive of the first drive structure, the reverse bone plate first moves forward and downward from the initial position to abut against the tubular fabric, then can be inserted between the annular fabric and the first rolled edge, and finally moves forward at a speed of V2 to flip the bone position, where speed V2 > V1.

[0008] In one embodiment, the automatic hemming machine further includes a hemming mechanism, which includes a hemming hook arranged in a left-right direction and a second drive structure drivenly connected to the right end of the hemming hook. The left end of the hemming hook is provided with a hook portion. The second drive structure is located on the right side of the support assembly and is electrically connected to the controller. The control method further includes a hemming process located upstream of the bone position flipping process. The hemming process is as follows: Step S1, when the sensor detects that the first hemming is above the support assembly, a signal is transmitted to the controller. The controller controls the second drive structure to work. Under the drive of the second drive structure, the hemming hook first moves to the left from the initial state until the hook portion is located on the left side of the first hemming, then moves downward to abut against the annular fabric, then moves to the right until the hook portion extends between the first hemming and the annular fabric, and finally moves upward until the hook portion disengages from abutting against the annular fabric below the first hemming.

[0009] Step S2: The conveying mechanism drives the tubular fabric to rotate relative to the support assembly. Under the action of the roll hook, the free edge of the first rolled edge is folded inward to form the second rolled edge.

[0010] Understandably, the secondary hemming of tubular fabrics can be automatically achieved upstream of the bone position flipping process.

[0011] In one embodiment, the material support assembly includes a support plate and at least two support rods in sequence along the circumferential direction. The support rods are located below the support plate. The material support mechanism also includes a third drive structure electrically connected to the controller. At least one support rod corresponds to one third drive structure. Between step S1 and step S2, a material support process is also included. The material support process is as follows: the controller controls the third drive structure to work, and the support rod moves outward under the drive of the third drive structure, thereby expanding the tubular fabric sleeved around the material support assembly.

[0012] In one embodiment, a sewing machine is provided on the worktable. The sewing machine includes a sewing head with a needle that can move up and down. The material support assembly includes a support plate located below the sewing head and having a needle groove for the needle to pass through at a position corresponding to the needle. A presser foot is provided above the support plate and located below the sewing head. The presser foot and the support plate also have needle grooves for the needle to pass through at positions corresponding to the needle. A fourth drive structure is provided on the sewing head to drive the presser foot to move up and down. The power output end of the fourth drive structure is connected to the presser foot.

[0013] In one embodiment, the presser foot includes a presser foot portion and a guard portion, the guard portion and the presser foot portion being arranged sequentially along the insertion direction of the tubular fabric. The needle groove on the presser foot is located on the presser foot portion. The fourth drive structure is electrically connected to the controller, and the fourth drive structure includes a sixth drive component for driving the guard portion to move up and down and a seventh drive component for driving the presser foot portion to move up and down. The guard portion can be located on the movement path of the bob plate moving in the front-back direction. The control method also includes a sewing process located downstream of the bob position flipping process. The sewing process is as follows: when the bob plate moves forward to a position below the guard portion, the bob plate stops moving forward and returns to the initial position under the first drive structure. When the bob position moves to a position below or near the needle, the sewing machine starts sewing. When it is about to sew one circle, the roll hook returns to the initial state under the drive of the second drive structure.

[0014] In one embodiment, when the reverse plate moves forward to a position behind the baffle portion under the drive of the first drive structure, the baffle portion moves upward under the drive of the sixth drive assembly, and the reverse plate continues to move forward to a position below the baffle portion. When the reverse plate exits below the baffle portion, the baffle portion moves downward under the drive of the sixth drive assembly and abuts against the tubular fabric.

[0015] In one embodiment, a connecting seat fixedly connected to the workbench is provided above the workbench. The conveying mechanism includes a first mop roller rotatably mounted on the connecting seat, a second mop roller located above the first mop roller, a first drive mechanism for driving the second mop roller to rotate around its own axis, and a second drive mechanism for driving the second mop roller to move up and down. The rotation axis of the second mop roller is parallel to the rotation axis of the first mop roller. The support plate has a clearance opening to avoid the first mop roller. When the tubular fabric is sleeved around the material support assembly, the tubular fabric is located around the first mop roller and partially between the first and second mop rollers. During the material support process and / or when the conveying mechanism is in operation, the second mop roller moves downward under the drive of the second drive mechanism and abuts against the tubular fabric.

[0016] In one embodiment, the second driving structure includes a linkage component that enables the roll hook to move up and down, and a fourth driving component that drives the roll hook to move in the left and right direction. The linkage component is connected to the right end of the roll hook, and the power output end of the fourth driving component is connected to the linkage component. The return process of the roll hook is as follows: the roll hook moves to the left under the drive of the fourth driving component until it exits between the first rolled edge and the loop fabric, then moves upward under the drive of the linkage component, and then moves to the right to the initial state under the drive of the fourth driving component.

[0017] In one embodiment, the first driving structure includes a first mounting plate, a second mounting plate, a first driving component, a second driving component, and a third driving component. The first driving component is fixedly mounted on the first mounting plate, and its power output end is connected to the reverse bone plate. The second driving component is fixedly mounted on the second mounting plate, and its power output end is connected to the first mounting plate. The power output end of the third driving component is connected to the second mounting plate. The first, second, and third driving components are all electrically connected to the controller. In the bone position flipping process, the reverse bone plate, driven by the third driving component, first moves forward from its initial position to above the tubular fabric, then moves to the left under the drive of the second driving component to the left side of the first rolled edge, then moves downward under the drive of the first driving component to abut against the tubular fabric, and then moves to the right under the drive of the second driving component.

[0018] In one embodiment, the first drive structure includes a fifth drive component and an eighth drive component, wherein the power output end of the fifth drive component is rotatably connected to the reverse bone plate, and the power output end of the eighth drive component is connected to the fifth drive component.

[0019] Driven by the fifth drive assembly, the reverse bone plate first swings forward from its initial position to above the tubular fabric, with the bottom surface of the reverse bone plate abutting against the tubular fabric. Then, driven by the eighth drive assembly, it moves to the right and continues to swing forward under the drive of the fifth drive assembly to flip the bone position.

[0020] In one embodiment, the reversed plate includes an L-shaped reversed body, the reversed body including an extension extending in a front-rear direction, the front end of the extension extending rearward to form a side portion, the rear end of the extension being connected to the power output end of the first drive structure, and when the reversed plate is in the pre-reversed position, the side portion is located between the annular fabric and the first rolled edge.

[0021] Compared with the prior art, in the control method of the automatic hemming machine provided in this application, when the sensor detects the rib position, that is, when the rib position is above the material support assembly, the controller automatically controls the first drive structure to drive the reverse rib plate to move. The reverse rib plate presses against the annular fabric and flips the rib position on the annular fabric when it moves forward. That is, it reliably controls the direction of the rib position, avoids the problem of low efficiency caused by manual flipping, better meets the process requirements, and improves the user's comfort. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a perspective view of an automatic edge-rolling machine according to an embodiment of this application;

[0024] Figure 2 for Figure 1 A magnified view of a section at point I;

[0025] Figure 3 for Figure 1 A schematic diagram of the structure of the activity mechanism in the middle;

[0026] Figure 4 for Figure 3 Another structural diagram;

[0027] Figure 5 for Figure 1 Schematic diagram of the conveyor mechanism;

[0028] Figure 6 This is a schematic diagram of the structure of a curling mechanism according to an embodiment of this application;

[0029] Figure 7 This is a schematic diagram of the structure of the support plate, pressure foot and conveying mechanism in one embodiment of this application;

[0030] Figure 8 for Figure 7 Another structural diagram;

[0031] Figure 9 This is a schematic diagram of the structure of the tubular fabric with the first rolled edge formed in this application;

[0032] Figure 10 for Figure 9 A cross-sectional view of a tubular fabric with a second rolled edge;

[0033] Figure 11This is a schematic diagram of the hemming mechanism according to another embodiment of this application;

[0034] Figure 12 for Figure 11 Another structural diagram;

[0035] Figure 13 This is a control flowchart of an automatic edge-rolling machine according to an embodiment of this application;

[0036] Figure 14 This is a perspective view of an automatic edge-rolling machine according to another embodiment of this application;

[0037] Figure 15 for Figure 14 A schematic diagram of the structure of the activity mechanism in the middle;

[0038] Figure 16 for Figure 15 A structural diagram from another angle.

[0039] Reference numerals: 1. Workbench; 11. Mounting base; 111. Third slide rail; 12. Connecting base; 13. Fixed base; 131. First guide rail; 132. Sixth cylinder; 133. Seventh cylinder; 134. Movable rod; 135. Second guide rail; 2. Material support mechanism; 21. Material support assembly; 211. Support plate; 2111. Needle groove; 2112. Clearance opening; 212. Adjusting rod; 2121. First fixed plate; 2122. First guide part; 2123. Locking element; 213. Spreading rod; 2131. Second fixed plate; 2132. Second guide part; 214. 1. Lower stop bar; 3. Movable mechanism; 31. Reverse bone plate; 311. Reverse bone body; 3111. Extension; 3112. Side part; 312. Transition plate; 3121. First sliding part; 32. First drive structure; 321. First mounting plate; 3211. First plate; 3212. Second plate; 3213. First slide rail; 3214. Second sliding part; 322. Second mounting plate; 3221. Second slide rail; 3222. Third sliding part; 323. First drive assembly; 324. Second drive assembly; 325. Third drive assembly; 3251. First motor; 3 252. Conveyor toothed belt; 3253. Drive gear; 3254. Driven gear; 33. Fifth drive assembly; 331. First driver; 332. Linkage assembly; 3321. First link; 3322. Second link; 3323. Arc groove; 3324. Connector; 34. Eighth drive assembly; 4. Tubular fabric; 41. First hem; 411. Second hem; 42. Annular fabric; 43. Bone; 5. Hem mechanism; 51. Fabric hook; 511. Hook; 52. Second drive structure; 521. Fifth cylinder; 522. Fourth drive assembly; 52 31. Tension spring; 5232. Connecting shaft; 5233. Connecting plate; 5234. Arc groove; 5235. Fixing component; 6. Sewing machine; 61. Machine head; 62. Machine needle; 63. Accommodating space; 64. Fourth drive structure; 641. Sixth drive assembly; 642. Seventh drive assembly; 6431. Second driver; 6432. Connecting arm; 7. Presser foot; 71. Presser foot part; 711. Perforation; 72. Edge guard part; 8. Conveying mechanism; 81. First drag roller; 82. Second drag roller; 83. First drive mechanism; 84. Second drive mechanism; 9. Sensor. Detailed Implementation

[0040] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0041] It should be noted that when a component is described as "fixed to" or "set to" another component, it can be directly on the other component or it can be in a middle component. When a component is described as "connected to" another component, it can be directly connected to the other component or it may be in a middle component.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] It should be noted that "axial arrangement" means that the overall arrangement direction is along the axial direction, including but not limited to axial extension, and may be at an angle to the axial direction.

[0045] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0046] like Figures 1-13 As shown, this application discloses an automatic edge-rolling machine. Figure 1 As shown, the automatic hemming machine includes a worktable 1, a controller, a material support mechanism 2, a movable mechanism 3, a hemming mechanism 5, a sewing machine 6, a conveying mechanism 8, and a sensor 9. The material support mechanism 2 and the movable mechanism 3 are both connected to the worktable 1.

[0047] The support mechanism 2 includes a support assembly 21 extending in the left-right direction to support the tubular fabric 4. For example... Figure 1 , Figure 9 and Figure 10As shown, the tubular fabric 4 is wrapped around the periphery of the support assembly 21 from left to right, and the rib 43 is exposed and the open end is folded outward to form a first rolled edge 41. The part of the tubular fabric 4 other than the first rolled edge 41 is defined as the annular fabric 42, and the first rolled edge 41 is located at the right end of the tubular fabric 4.

[0048] It should be noted that the terms "left," "right," "front," "rear," "side," and similar expressions used in this application are merely for describing various exemplary structural parts and elements of this application. Their use is solely for illustrative purposes and is based on the exemplary orientations shown in the accompanying drawings, and does not represent the only possible implementation. Since the embodiments disclosed in this application can be arranged in different orientations, these directional terms are for illustrative purposes only and should not be considered as limiting.

[0049] like Figure 1 , Figure 3 and Figure 4 As shown, the movable mechanism 3 includes a reversed bone plate 31 and a first drive structure 32 connected to the reversed bone plate 31. The first drive structure 32 is located behind the support assembly 21. Driven by the first drive structure 32, the reversed bone plate 31 can move to the pressing position and the pre-reversed bone position.

[0050] like Figure 1 , Figure 3 , Figure 4 , Figure 9 and Figure 10 As shown, when the reverse bone plate 31 is in the pressing position, the bottom surface of the reverse bone plate 31 abuts against the position on the tubular fabric 4 located beside the first rolled edge 41; that is, the bottom surface of the reverse bone plate 31 abuts against the annular fabric 42 beside the first rolled edge 41. When the reverse bone plate 31 moves from the pressing position to the pre-reverse bone position, a portion of the reverse bone plate 31 is inserted between the annular fabric 42 and the first rolled edge 41, and the reverse bone plate 31 can move in the front-back direction under the drive of the first drive structure 32 to flip the bone position 43, which is defined as the bone position 43 flipping process.

[0051] It should be noted that the tubular fabric 4 mentioned above is the trouser leg or sleeve, and the position of the first rolled edge 41 is the cuff or trouser hem.

[0052] It is understandable that an active mechanism 3 is set in the automatic hemming machine. The boning plate 31 in the active mechanism 3 can move to the abutment position under the drive of the first drive structure 32, that is, the position where it abuts against the position of the annular fabric 42 located next to the first hemming 41. Under the drive of the first drive structure 32, it can move from the abutment position to the pre-boning position where it is partially inserted between the annular fabric 42 and the first hemming 41. At this time, one side of the boning plate 31 can press down the boning position 43 located between the first hemming 41 and the annular fabric 42, and can also press down the boning position 43 located next to the first hemming 41. When the boning plate 31 moves in the front-back direction, it can reliably realize the flipping of the boning position 43 on the annular fabric 42, that is, reliably control the tilting direction of the boning position 43, better meet the process requirements, and improve the user's comfort.

[0053] Furthermore, the aforementioned reversed bone plate 31 includes an L-shaped reversed bone body 311, which includes an extension portion 3111 extending along the front-rear direction. The front end of the extension portion 3111 extends to the right to form a side portion 3112, and the rear end of the extension portion 3111 is connected to the power output end of the first drive structure 32. When the reversed bone plate 31 is in the pre-reversed bone position, the side portion 3112 is located between the annular fabric 42 and the first rolled edge 41. That is, the side portion 3112 can press against the annular fabric 42 below the first rolled edge 41, while the extension portion 3111 presses against the annular fabric 42 located next to the first rolled edge 41. In this way, the direction of the bone position 43 on the annular fabric 42 can be better controlled, avoiding the omission of bone position 43 flipping on the annular fabric 42, which facilitates the subsequent sewing of the second rolled edge.

[0054] like Figure 1 , Figure 7 and Figure 8 As shown, the conveying mechanism 8 drives the tubular fabric 4 to rotate relative to the support assembly 21 around an axis extending in the left-right direction. The conveying mechanism 8 and the movable mechanism 3 are arranged at intervals in the front-back direction, with at least a portion of the conveying mechanism 8 located below the sewing head 61. Thus, the presence of the conveying mechanism 8 automatically moves the tubular fabric 4, facilitating subsequent sewing work. The movement speed of the tubular fabric 4 is V1, and the speed V2 of the aforementioned reversed boning plate 31 is greater than speed V1. Therefore, the reversed boning plate 31 reliably achieves the flipping of the boning position.

[0055] like Figure 7 and Figure 8As shown, the conveying mechanism 8 includes a first mopping wheel 81 rotatably mounted on the connecting seat 12, a second mopping wheel 82 located above the first mopping wheel 81, a first drive mechanism 83 for driving the second mopping wheel 82 to rotate around its own axis, and a second drive mechanism 84 for driving the second mopping wheel 82 to move up and down. The power output end of the second drive mechanism 84 is connected to the first drive mechanism 83, and the power output end of the first drive mechanism 83 is connected to the rotating shaft of the second mopping wheel 82. The rotating shaft extends in the left-right direction, and its axis is the axis of the second mopping wheel 82, and is parallel to the rotation axis of the first mopping wheel 81. The support plate 211 has a clearance opening 2112 to avoid the first mopping wheel 81. When the tubular fabric 4 is sleeved around the support assembly 21, the tubular fabric 4 is located around the first mopping wheel 81, and partly between the first mopping wheel 81 and the second mopping wheel 82. In addition, the first mopping wheel 81 and the second mopping wheel 82 are located between the two connecting arms 6432.

[0056] Thus, by driving the second mop roller 82 upward through the second drive mechanism 84 to leave a gap between it and the first mop roller 81, the tubular fabric 4 can be easily fitted onto the support assembly 21, with part of the fabric located within the gap; by driving the second mop roller 82 downward through the second drive mechanism 84, part of the tubular fabric 4 can abut between the first mop roller 81 and the second mop roller 82; when the first drive mechanism 83 drives the second mop roller 82 to rotate, the tubular fabric 4 can rotate relative to the support assembly 21.

[0057] The second drive mechanism 84 mentioned above is a cylinder or a push rod motor. The first drive mechanism 83 mentioned above can be a motor, or a motor and a transmission component working together, as long as the second mop wheel 82 can be rotated. This will not be described in detail in this embodiment.

[0058] like Figure 1 and Figure 2 As shown, the sensor 9 is located above the support assembly 21, and the signal output terminal of the sensor 9 is electrically connected to the signal input terminal of the controller. The signal output terminal of the controller is electrically connected to the first drive structure 32 and is configured to control the first drive structure 32 to drive the reverse bone plate 31 to perform the bone position 43 flipping process after receiving the signal from the sensor 9 that the bone position 43 has been sensed. In this embodiment, the sensor 9 is located on the side of the machine head 61 facing the first drive structure 32 and corresponds to the side edge of the support plate 211 near the first drive structure 32. That is, the sensor 9 corresponds to the rear edge of the support plate 211.

[0059] like Figure 1 and Figure 6As shown, the aforementioned automatic hemming machine also includes a hemming mechanism 5, which includes a hemming hook 51 and a second drive structure 52. The hemming hook 51 is arranged along the left-right direction, with a hook portion 511 at its left end and its right end connected to the second drive structure 52. Driven by the second drive structure 52, the hook portion 511 extends between the first hemmed edge 41 and the annular fabric 42. While the tubular fabric 4 is in motion, the hemming hook 51 folds the free edge of the first hemmed edge 41 inward to form a second hemmed edge 411, which is defined as the hemming process. This hemming process is upstream of the rib position 43 flipping process. In other words, the rib position 43 is flipped after hemming the tubular fabric 4. Thus, the secondary hemming of the tubular fabric 4 can be automatically achieved, overcoming the tediousness of manual hemming.

[0060] It should be noted that the above-mentioned coil hook 51 is generally inclined upward from front to back.

[0061] Further, such as Figure 1 and Figure 6 As shown, a connecting seat 12 is fixedly connected to the workbench 1 above it. A second drive structure 52 is mounted on the connecting seat 12. The second drive structure 52 includes a linkage component that enables the coil hook 51 to move up and down, and a fourth drive component 522 that drives the coil hook 51 to move back and forth in the left-right direction. The linkage component is connected to the right end of the coil hook 51, and the power output end of the fourth drive component 522 is connected to the linkage component. Thus, through the cooperation of the linkage component and the fourth drive component 522, the up-and-down movement and the back-and-forth movement of the coil hook 51 in the left-right direction are achieved.

[0062] In one embodiment, the aforementioned linkage component is a fifth cylinder 521, the output end of which is arranged along the vertical direction and connected to the coil hook 51.

[0063] In another embodiment, such as Figure 1 , Figure 11 and Figure 12 As shown, the above-mentioned linkage component includes a tension spring 5231, a connecting shaft 5232, and a vertically arranged connecting plate 5233. The connecting plate 5233 is rotatably connected to the power output end of the fourth drive component 522 through the connecting shaft 5232. The position of the connecting plate 5233 below the connecting shaft 5232 is connected to the right end of the coil hook 51. The position of the connecting plate 5233 above the connecting shaft 5232 is connected to the first end of the tension spring 5231. The second end of the tension spring 5231 is connected to the power output end of the fourth drive component 522. When the reverse bone plate 31 is in the pre-reverse bone position, the reverse bone plate 31 pushes the hook part 511 upward to disengage the hook part 511 from the pressing state with the bone position 43.

[0064] Thus, when the fabric hook 51 enters between the first rolled edge 41 and the annular fabric 42, under the action of the tension spring 5231, the fabric hook 51 will remain in a tilted state at its maximum angle. When the boning plate 31 enters between the first rolled edge 41 and the annular fabric 42, it will give the fabric hook 51 an upward force. The fabric hook 51, along with the connecting plate 5233, will overcome the tension of the tension spring 5231 and rotate upward around the connecting shaft 5232. At this time, the hook part 511 of the fabric hook 51 will no longer press against the boning position 43. At this time, the boning plate 31 can push the boning position 43 forward to complete the boning position 43 action.

[0065] In addition, in order to better guide the rotation of the connecting plate 5233, such as Figure 12 As shown, the connecting plate 5233 has an arc-shaped groove 5234 extending along the rotation direction of the connecting plate 5233 and a fixing member 5235 that slides with the arc-shaped groove 5234 at a position above the connecting shaft 5232. A portion of the fixing member 5235 passes through the arc-shaped groove 5234 and is connected to the power output end of the fourth drive assembly 522.

[0066] The aforementioned fourth drive component 522 is either a fourth cylinder or a push rod motor.

[0067] Further, such as Figure 1 and Figure 2 As shown, a sewing machine 6 is provided on the top surface of the workbench 1. The sewing machine 6 includes a head 61, on which a needle 62 is provided. The connecting seat 12 is located below the head 61 and forms an accommodating space 63 between it and the head 61. The hemming mechanism 5 is located within the accommodating space 63.

[0068] The presence of the aforementioned sewing machine 6 allows for the sewing of the tubular fabric 4 after the bobbin position 43 has been turned over. It is understood that the hemming mechanism 5 is located within the accommodating space 63 formed by the connecting seat 12 and the machine head 61, increasing the structural compactness of the automatic hemming machine and avoiding the problem of increased machine size due to the hemming mechanism 5 occupying additional space.

[0069] like Figure 1 , Figure 2 and Figure 5 As shown, the material support assembly 21 includes a support plate 211, an adjusting rod 212, and at least two support rods in sequence along the circumferential direction. The support plate 211 and the connecting seat 12 are connected sequentially along the insertion direction of the tubular fabric 4. The support plate 211 has a needle groove 2111 at the position corresponding to the needle 62 for the needle 62 to pass through. The support rods and adjusting rods 212 are both located below the support plate 211. The worktable 1 has a vertically arranged fixed seat 13 located below the support plate 211. The support rods and adjusting rods 212 are both mounted on the fixed seat 13 and are arranged to move in and out of the fixed seat 13 to allow the material support assembly 21 to retract or expand.

[0070] Thus, when the tubular fabric 4 is in the state of being fitted onto the support assembly 21, the support rod can be moved outward to open the support assembly 21, thereby expanding the tubular fabric 4.

[0071] It should be noted that "inner and outer movement" refers to the movement from the inside out along the fixed seat 13 away from the center of the support assembly 21, with the center of the support assembly 21 as the inside.

[0072] like Figure 5 As shown, there are two support rods, namely the spreading rod 213 and the lower stop rod 214. The adjusting rod 212 and the spreading rod 213 are arranged at intervals along the front-to-back direction, and the first mop wheel 81 is located between the adjusting rod 212 and the spreading rod 213. The spreading rod 213 is located close to the first drive assembly 323, that is, it is located to the right of the adjusting rod 212. The lower stop rod 214 is located below the adjusting rod 212 and the second support.

[0073] To achieve the inward and outward movement of the adjusting rod 212, specifically, as follows: Figure 5 As shown, the adjusting rod 212 is provided with a first fixing plate 2121 arranged parallel to the fixing base 13. A first guide rail 131 and a first guide portion 2122 are matched between the first fixing plate 2121 and the fixing base 13, and are slidably engaged in the front-rear direction. The first guide portion 2122 is disposed on the first fixing plate 2121, and the first guide rail 131 extends along the front-rear direction and is fixed to the fixing base 13. A locking member 2123 is provided on the first guide portion 2122, and the first guide rail 131 is provided with mounting holes spaced apart along its length. The locking member 2123 is installed in the corresponding mounting holes to fix the first guide portion 2122 on the first guide rail 131.

[0074] To achieve the inward and outward movement of the lower stop lever 214, specifically, as follows: Figure 5 As shown, a sixth cylinder 132 is mounted on the fixed base 13. The power output end of the sixth cylinder 132 is connected to the lower stop lever 214 to drive the lower stop lever 214 to move up and down.

[0075] To achieve the inward and outward movement of the spreading rod 213, specifically, a seventh cylinder 133 and a movable rod 134 are installed on the fixed base 13. One end of the seventh cylinder 133 is rotatably connected to the fixed base 13, and the power output end of the seventh cylinder 133 is connected to the movable rod 134 near the middle. The movable rod 134 is arranged vertically, and its lower end is rotatably connected to the fixed base 13. The upper end of the movable rod 134 is connected to the spreading rod 213, so as to drive the spreading rod 213 to move back and forth in the front-back direction. In order to guide the movement of the spreading rod 213, a second fixed plate 2131 is installed on the spreading rod 213. A second guide rail 135 and a second guide part 2132 that slide in the front-back direction are matched between the second fixed plate 2131 and the fixed base 13. The second guide rail 135 extends in the front-back direction.

[0076] In addition, such as Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, a presser foot 7 is provided above the support plate 211, and the presser foot 7 is located behind the second drag roller 82. The presser foot 7 has a through hole 711 at the position corresponding to the needle 62 for the needle 62 to pass through. A fourth drive structure 64 is provided on the sewing head 61 to drive the presser foot 7 up and down, and the power output end of the fourth drive structure 64 is connected to the presser foot 7. The presence of the presser foot 7 provides pressure and positioning for the tubular fabric during sewing, facilitating the sewing operation.

[0077] Specifically, such as Figure 2 , Figure 7 and Figure 8 As shown, the presser foot 7 includes a presser foot portion 71 and a retaining edge portion 72. The fourth drive structure 64 includes a sixth drive assembly 641 for driving the retaining edge portion 72 to move up and down, and a seventh drive assembly 642 for driving the presser foot portion 71 to move up and down. The perforation 711 is located on the presser foot portion 71. The retaining edge portion 72 and the presser foot portion 71 are arranged sequentially along the insertion direction of the tubular fabric 4. The retaining edge portion 72 can be located on the movement path of the reversed plate 31 in the front-back direction. When the reversed plate 31 moves to the side of the retaining edge portion 72, the retaining edge portion 72 moves upward under the drive of the sixth drive assembly 641, so that the reversed plate 31 can move to a position below the retaining edge portion 72. The insertion direction of the tubular fabric 4 is the left-right direction.

[0078] In this way, by controlling the edge guard 72 and the pressure foot 71 separately, reliable pressure on the first rolled edge 41 can be achieved without affecting the avoidance of the reverse plate 31, and the operation of the reverse plate 31 can be better coordinated.

[0079] Specifically, the sixth drive assembly 641 and the seventh drive assembly 642 are arranged sequentially at intervals along the insertion direction of the tubular fabric 4, and each includes a second driver 6431 and a connecting arm 6432 arranged in the front-back direction. The first end of the connecting arm 6432 is rotatably connected to the worktable 1 or the machine head 61 via a first mounting shaft extending in the left-right direction. The second ends of the two connecting arms 6432 are rotatably connected to the side guard 72 and the presser foot 71, respectively. The power output end of the second driver 6431 is rotatably connected to the corresponding side connecting arm 6432 via a second mounting shaft. The second mounting shaft is located between the first end and the second end of the connecting arm 6432 and extends in the left-right direction. The aforementioned second driver 6431 is a cylinder or a push rod motor.

[0080] The first drive structure 32, the second drive structure 52, the fourth drive structure 64, the sixth cylinder 132 and the seventh cylinder 133 mentioned above are all electrically connected to the controller.

[0081] like Figure 13 As shown, the control method of the above-mentioned automatic edge-rolling machine includes:

[0082] Step 1: Place the tubular fabric 4 with the first rolled edge 41 around the periphery of the support assembly 21 from left to right;

[0083] Step 2: Perform the hemming process, which includes a first step of inserting the hook 511 between the first hemming 41 and the loop fabric 42, and a second step of the conveying mechanism 8 driving the tubular fabric 4 to move relative to the support assembly 21.

[0084] Step 3: Perform the bone rotation process;

[0085] Step 4: Sewing process.

[0086] It should be noted that the hemming process is upstream of the rib-turning process, while the sewing process is upstream of the rib-turning process.

[0087] The first process is step S1. Specifically, when the sensor 9 detects that the first rolled edge 41 is above the material support assembly 21, it transmits a signal to the controller. The controller controls the second drive structure 52 to work. Specifically, the rolled hook 51 first moves to the left from the initial state under the drive of the fourth drive assembly 522 until the hook part 511 is located to the left of the first rolled edge 41. Then, under the drive of the linkage assembly, it moves downward to abut against the annular fabric 42. Subsequently, under the drive of the fourth drive assembly 522, it moves to the right until the hook part 511 extends between the first rolled edge 41 and the annular fabric 42. Finally, under the drive of the linkage assembly, it moves upward until the hook part 511 disengages from abutting against the annular fabric 42 below the first rolled edge 41.

[0088] The second process is step S2, in which the conveying mechanism 8 drives the tubular fabric 4 to rotate relative to the material support assembly 21 around the axis extending in the left and right direction. Under the action of the roll hook 51, the free edge of the first rolled edge 41 is folded inward to form the second rolled edge 411.

[0089] To enable the conveying mechanism 8 to drive the tubular fabric 4, it is first necessary to spread and press the tubular fabric 4 against the material support assembly; that is, a material support process is included between steps S1 and S2. Specifically, the controller controls the sixth cylinder 132 and the seventh cylinder 133 to work, thereby causing the spreading rod 213 and the lower stop rod 214 to move outward, thus spreading the tubular fabric 4 that is sleeved around the material support assembly 21. The presser foot 7 moves downward under the drive of the fourth drive structure 64 to press down on the tubular fabric 4, and the second drag roller 82 presses down on the tubular fabric 4 under the drive of the second drive mechanism 84.

[0090] The above-mentioned bone position flipping process is as follows: when the sensor detects a signal that the bone position 43 is above the support assembly 21, the controller controls the first drive structure 32 to work and perform the bone position flipping process. Specifically, under the drive of the first drive structure 32, the reverse bone plate first moves forward from the initial position to above the tubular fabric 4, then moves downward to abut against the tubular fabric 4, then moves to the right to partially insert between the annular fabric 42 and the first rolled edge 41, and finally moves forward at a speed of V2 to flip the bone position 43, wherein the speed V2 > V1.

[0091] like Figure 1 , Figure 3 and Figure 4 As shown, a mounting base 11 is fixedly connected to the workbench 1 above the workbench 1.

[0092] The first form of the aforementioned first drive structure 32 includes a first mounting plate 321, a second mounting plate 322, a first drive assembly 323, a second drive assembly 324, and a third drive assembly 325. All three are electrically connected to a controller. The first drive assembly 323 is fixedly mounted on the first mounting plate 321, and its power output end is connected to the reverse bone plate 31 to drive the reverse bone plate 31 to move up and down, thereby pressing the reverse bone plate 31 downwards against the tubular fabric. The second drive assembly 324 is fixedly mounted on the second mounting plate 322, and its power output end is connected to the first mounting plate 321 to drive the first drive assembly 323 and the reverse bone plate 31 to move back and forth in the left-right direction, thus enabling switching between the pressing position and the pre-reverse bone position. The aforementioned third drive assembly 325 is mounted on the mounting base 11, and the power output end of the third drive assembly 325 is connected to the second mounting plate 322 to drive the second drive assembly 324, the first drive assembly 323 and the reverse bone plate 31 to move in the front-back direction, thereby achieving the purpose of the reverse bone plate 31 moving closer to or further away from the aforementioned support assembly 21.

[0093] When the first form of the first driving structure is adopted, the bone position flipping process is as follows: the reverse bone plate 31 moves forward from the initial position to above the tubular fabric under the drive of the third driving component 325, then moves to the left under the drive of the second driving component 324 to the left side of the first rolled edge 41, then moves downward under the drive of the first driving component 323 to abut against the tubular fabric 4, then moves to the right under the drive of the second driving component 324 to partially insert between the annular fabric 42 and the first rolled edge 41, and finally the reverse bone plate 31 moves forward at a speed V2 under the drive of the third driving component 325 to flip the bone position.

[0094] Specifically, the first drive assembly 323 is a first cylinder, with its output end arranged vertically. The second drive assembly 324 is a second cylinder, with its output end arranged along the left-right direction. The third drive assembly 325 includes a first motor 3251, a conveying toothed belt 3252, and a drive gear 3253 and a driven gear 3254 arranged at intervals along the front-back direction. The driven gear 3254 is rotatably mounted on the mounting base 11. The output shaft of the first motor 3251 extends along the left-right direction. The drive gear 3253 is mounted on the output shaft of the motor. The conveying toothed belt 3252 surrounds the drive gear 3253 and the driven gear 3254 and meshes with them. The second mounting plate 322 is connected to the conveying toothed belt 3252. Thus, when the first motor 3251 operates, it drives the driving gear 3253 to rotate, and transmits power to the driven gear 3254 via the conveyor belt 3252, thereby driving the driven gear 3254 to rotate. During the movement, the conveyor belt 3252 drives the second mounting plate 322 to move back and forth in the front-to-back direction. In addition, the first drive assembly 323 and the third drive assembly 325 are arranged sequentially in the left-to-right direction. In this way, the overall structure of the movable mechanism 3 is more compact.

[0095] Furthermore, the output end of the first cylinder is connected to the second end of the extension 3111 via a transition plate 312. The transition plate 312 is arranged vertically, and the first mounting plate 321 includes a first plate 3211 arranged side by side with the transition plate 312 and a second plate 3212 arranged side by side with the second mounting plate 322. The second plate 3212 is located above the second mounting plate 322.

[0096] To guide the movement of the reverse plate 31 in the vertical, horizontal, and front-back directions, a first slide rail 3213 and a first sliding portion 3121 are fitted together between the first plate 3211 and the transition plate 312, with the first slide rail 3213 extending vertically. A second slide rail 3221 and a second sliding portion 3214 are fitted together between the second plate 3212 and the second mounting plate 322, with the second slide rail 3221 extending horizontally. Furthermore, the second mounting plate 322 is located above the mounting base 11, and a third slide rail 111 and a third sliding portion 3222 are fitted together between the second mounting plate 322 and the mounting base 11, with the third slide rail 111 extending front-back.

[0097] Schematic, the first slide rail 3213 may be located on the first plate 3211 or the transition plate 312; the second slide rail 3221 may be located on the second plate 3212 or the second mounting plate 322; and the third slide rail 111 may be located on the second mounting plate 322 or the mounting base 11.

[0098] The second form of the aforementioned first drive structure 32: such as Figures 14-16 As shown, the first drive structure 32 includes a fifth drive assembly 33 and an eighth drive assembly 34. The power output end of the fifth drive assembly 33 is connected to the second end of the extension 3111, that is, the power output end of the fifth drive assembly 33 is connected to the reverse bone plate 31. The power output end of the eighth drive assembly 34 is connected to the fifth drive assembly 33.

[0099] Then, driven by the fifth drive assembly 33, the reverse bone plate 31 swings forward toward the support assembly 21 to the pressing position, and driven by the eighth drive assembly 34, moves to the right to the pre-reverse bone position. When the reverse bone plate 31 is in the pressing position, the bottom surface of the reverse bone plate 31 abuts against the tubular fabric 4. See details. Figures 13-15 As shown; when the reverse bone plate 31 is in the pre-reverse bone position, part of the reverse bone plate 31 is inserted between the annular fabric 42 and the first rolled edge 41, and the reverse bone plate 31 moves forward at a speed V2 under the drive of the fifth drive assembly 33 to flip the bone position.

[0100] The signal output terminal of the controller is electrically connected to the fifth drive component 33 and the eighth drive component 34, and is configured to control the fifth drive component 33 and the eighth drive component 34 to drive the reverse bone plate 31 to perform the bone position flipping process after receiving the signal of bone position sensed by the sensor 9.

[0101] In this embodiment, such as Figure 15 and Figure 16 As shown, the fifth drive assembly 33 includes a first driver 331 and a connecting rod assembly 332. The connecting rod assembly 332 is vertically arranged and has an arc-shaped structure that arches away from the support assembly 21. It can extend and retract vertically along its length, thereby causing the reversed plate 31 to press downward against the tubular fabric. The power output end of the aforementioned eighth drive assembly 34 is connected to the first driver 331. The output shaft of the first driver 331 is rotatably connected to the upper end of the connecting rod assembly 332, and the lower end of the connecting rod assembly 332 is connected to the reversed plate 31.

[0102] The aforementioned linkage assembly 332 can be in the form of a telescopic sleeve or other forms. In this embodiment, the linkage assembly 332 includes a first linkage 3321 and a second linkage 3322. The first end of the first linkage 3321 is connected to the output shaft of the first driver 331 and rotates around the axis of the output shaft under the drive of the first driver 331. The second end of the first linkage 3321 and the first end of the second linkage 3322 are provided with a slidingly fitted arcuate groove 3323 and a connector 3324. The arcuate groove 3323 extends along the length direction of the linkage assembly 332. One of the first linkage 3321 and the second linkage 3322 is provided with the arcuate groove 3323, and the other of the first linkage 3321 and the second linkage 3322 has a connecting hole that connects to one end of the connector 3324 passing through the arcuate groove 3323. Thus, the second link 3322 can move up and down through the cooperation of the arc groove 3323 and the connector 3324, thereby achieving the pressure on the tubular fabric 4.

[0103] To increase the reliability of the connection between the first link 3321 and the second link 3322, there are two connectors 3324, which are spaced apart along the length of the arc groove 3323.

[0104] The first driver 331 mentioned above is a motor. The eighth drive assembly 34 is a third cylinder, and the movable end of the third cylinder is connected to the fifth drive assembly 33 to drive the fifth drive assembly 33 and the reverse plate 31 to move back and forth in the left and right direction.

[0105] When the first driving structure 32 is adopted in its second form, the bone rotation process is as follows:

[0106] Driven by the fifth drive assembly 33, the reverse bone plate 31 first swings forward from its initial position to above the tubular fabric 4, and the bottom surface of the reverse bone plate 31 abuts against the tubular fabric 4 (i.e., abuts against the position of the annular fabric 42 located beside the first rolled edge 41). Then, driven by the eighth drive assembly 34, the reverse bone plate 31 moves to the right from the abutment position to the pre-reverse bone position partially inserted between the annular fabric 42 and the first rolled edge 41. Finally, driven by the fifth drive assembly 33, the reverse bone plate 31 moves forward at a speed V2 to flip the bone position.

[0107] The above sewing process is as follows: when the bob plate 31 moves forward to the position below the edge 72, the bob plate 31 stops moving forward and returns to the initial position under the first drive structure 32. When the bone position 43 moves to the position below or near the needle 62, that is, when the sensor 9 detects the bone position, the sewing machine 6 starts sewing the position on the tubular fabric 4 corresponding to the second rolled edge 411, that is, sewing the second rolled edge, the position on the first rolled edge corresponding to the second rolled edge, and the loop fabric together.

[0108] The sewing machine 6 described above can start sewing from the suture position or from a position upstream of the suture position. It should be noted that "position near the bottom of the needle 62" means that the suture position 43 has not yet reached the bottom of the needle 62. In other words, sewing can start from a position upstream of the suture position. The specific position is determined according to the customer's specific needs.

[0109] When the sewing circle is about to be completed, the roll hook 51 returns to its initial state under the drive of the second drive structure 52. The end of sewing can be selected according to actual needs. For example, sewing can be ended at the starting position (i.e., the position where sewing begins) after sewing a circle, or it can be ended after sewing 1, 2, 3, or other stitches after sewing a circle. Sewing can also be ended at the bone position or at a position downstream of the bone position.

[0110] Specifically, when the reverse plate 31 pressing against the annular fabric 42 moves forward to a position behind the baffle 72 under the drive of the third drive assembly 325, the baffle 72 moves upward under the drive of the sixth drive assembly 641, and the reverse plate 31 continues to move forward to a position below the baffle 72 and stops moving. Then, when the reverse plate 31 moves backward out of the baffle 72, the baffle 72 moves downward under the drive of the sixth drive assembly 641 and abuts against the tubular fabric. At the same time, the reverse plate 31 returns to the initial position under the drive of the first drive structure 32.

[0111] The return process of the roll hook 51 is as follows: under the drive of the fourth drive component 522, the roll hook 51 first moves to the left until it exits between the first rolled edge 41 and the annular fabric 42, then moves upward under the drive of the linkage component, and then moves to the right to the initial state under the drive of the fourth drive component 522.

[0112] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0113] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of patent protection for the present application shall be determined by the appended claims.

Claims

1. A control method for an automatic edge-rolling machine, the automatic edge-rolling machine comprising a worktable, characterized in that, The automatic hemming machine further includes a controller, a sensor electrically connected to the controller, and a material support mechanism, a conveying mechanism, and a movable mechanism connected to the worktable. The material support mechanism includes a material support assembly for sleeved around a tubular fabric from left to right. The tubular fabric is a fabric with exposed ribs and an open end folded outward to form a first hem. The portion of the tubular fabric excluding the first hem is defined as an annular fabric. The sensor is located above the material support assembly. The movable mechanism includes a reverse rib plate and a first drive structure connected to the reverse rib plate. The first drive structure is located behind the material support assembly. The control method includes: The conveying mechanism drives the tubular fabric to rotate relative to the support assembly around an axis extending in the left-right direction, and the movement speed of the tubular fabric is V1. When the sensor detects that the bone position is above the support assembly, the controller controls the first drive structure to perform the bone position flipping process. That is, under the drive of the first drive structure, the reverse bone plate first moves forward and downward from the initial position to abut against the tubular fabric, then can be inserted between the annular fabric and the first rolled edge, and finally moves forward at a speed of V2 to flip the bone position, where speed V2 > V1.

2. The control method according to claim 1, characterized in that, The automatic hemming machine further includes a hemming mechanism, which includes a hemming hook arranged in the left-right direction and a second drive structure drivenly connected to the right end of the hemming hook. The left end of the hemming hook is provided with a hook portion. The second drive structure is located on the right side of the support assembly and is electrically connected to the controller. The control method further includes a hemming process located upstream of the bone position flipping process. The hemming process is as follows: Step S1: When the sensor detects that the first hemming is above the support assembly, a signal is transmitted to the controller. The controller controls the second drive structure to work. Under the drive of the second drive structure, the hemming hook first moves to the left from the initial state until the hook portion is located on the left side of the first hemming, then moves downward to abut against the annular fabric, then moves to the right until the hook portion extends between the first hemming and the annular fabric, and finally moves upward until the hook portion disengages from abutting against the annular fabric below the first hemming. Step S2: The conveying mechanism drives the tubular fabric to rotate relative to the support assembly. Under the action of the roll hook, the free edge of the first rolled edge is folded inward to form the second rolled edge.

3. The control method according to claim 2, characterized in that, The material support assembly includes a support plate and at least two support rods in sequence along the circumference. The support rods are located below the support plate. The material support mechanism also includes a third drive structure electrically connected to the controller. At least one support rod corresponds to one third drive structure. Between step S1 and step S2, there is a material support process. The material support process is as follows: the controller controls the third drive structure to work, and the support rod moves outward under the drive of the third drive structure, thereby opening up the tubular fabric sleeved around the material support assembly.

4. The control method according to claim 2, characterized in that, A sewing machine is mounted on the workbench. The sewing machine includes a sewing head with a needle that can move up and down. The material support assembly includes a support plate located below the sewing head and having a needle groove for the needle to pass through at a position corresponding to the needle. A presser foot is mounted above the support plate and located below the sewing head. The presser foot and the support plate also have needle grooves for the needle to pass through at positions corresponding to the needle. A fourth drive structure is mounted on the sewing head to drive the presser foot to move up and down. The power output end of the fourth drive structure is connected to the presser foot.

5. The control method according to claim 4, characterized in that, The presser foot includes a presser foot portion and a guard portion, which are arranged sequentially along the insertion direction of the tubular fabric. The needle groove on the presser foot is located on the presser foot portion. The fourth drive structure is electrically connected to the controller, and the fourth drive structure includes a sixth drive component for driving the guard portion to move up and down and a seventh drive component for driving the presser foot portion to move up and down. The guard portion can be located on the movement path of the bobbin plate moving in the front-back direction. The control method also includes a sewing process located downstream of the bobbin position flipping process. The sewing process is as follows: when the bobbin plate moves forward to a position below the guard portion, the bobbin plate stops moving forward and returns to the initial position under the first drive structure. When the bobbin position moves to a position below or near the needle, the sewing machine starts sewing. When it is about to sew one circle, the roll hook returns to the initial state under the drive of the second drive structure.

6. The control method according to claim 5, characterized in that, When the reverse plate moves forward to the position behind the baffle portion under the drive of the first drive structure, the baffle portion moves upward under the drive of the sixth drive assembly, and the reverse plate continues to move forward to the position below the baffle portion. When the reverse plate exits the position below the baffle portion, the baffle portion moves downward under the drive of the sixth drive assembly and abuts against the tubular fabric.

7. The control method according to claim 3, characterized in that, A connecting seat fixedly connected to the workbench is provided above the workbench. The conveying mechanism includes a first mop roller rotatably mounted on the connecting seat, a second mop roller located above the first mop roller, a first drive mechanism for driving the second mop roller to rotate around its own axis, and a second drive mechanism for driving the second mop roller to move up and down. The rotation axis of the second mop roller is parallel to the rotation axis of the first mop roller. The support plate has a clearance opening to avoid the first mop roller. When the tubular fabric is sleeved around the material support assembly, the tubular fabric is located around the first mop roller and partially between the first mop roller and the second mop roller. During the material support process and / or when the conveying mechanism is working, the second mop roller moves downward under the drive of the second drive mechanism and abuts against the tubular fabric.

8. The control method according to claim 5, characterized in that, The second driving structure includes a linkage component that enables the roll hook to move up and down, and a fourth driving component that drives the roll hook to move in the left and right direction. The linkage component is connected to the right end of the roll hook, and the power output end of the fourth driving component is connected to the linkage component. The return process of the roll hook is as follows: the roll hook moves to the left under the drive of the fourth driving component until it exits between the first rolled edge and the loop fabric, then moves upward under the drive of the linkage component, and then moves to the right to the initial state under the drive of the fourth driving component.

9. The control method according to claim 5, characterized in that, The first driving structure includes a first mounting plate, a second mounting plate, a first driving component, a second driving component, and a third driving component. The first driving component is fixedly mounted on the first mounting plate, and its power output end is connected to the reverse bone plate. The second driving component is fixedly mounted on the second mounting plate, and its power output end is connected to the first mounting plate. The power output end of the third driving component is connected to the second mounting plate. The first, second, and third driving components are all electrically connected to the controller. In the bone position flipping process, the reverse bone plate, driven by the third driving component, first moves forward from its initial position to above the tubular fabric, then moves to the left under the drive of the second driving component to the left side of the first rolled edge, then moves downward under the drive of the first driving component to abut against the tubular fabric, and then moves to the right under the drive of the second driving component.

10. The control method according to claim 9, characterized in that, The first drive structure includes a fifth drive component and an eighth drive component. The power output end of the fifth drive component is rotatably connected to the reverse bone plate, and the power output end of the eighth drive component is connected to the fifth drive component. Driven by the fifth drive assembly, the reverse bone plate first swings forward from its initial position to above the tubular fabric, with the bottom surface of the reverse bone plate abutting against the tubular fabric. Then, driven by the eighth drive assembly, it moves to the right and continues to swing forward under the drive of the fifth drive assembly to flip the bone position.

11. The control method according to any one of claims 1 to 10, characterized in that, The reversed plate includes an L-shaped reversed body, the reversed body includes an extension extending in the front-rear direction, the front end of the extension extends rearward to form a side portion, and the rear end of the extension is connected to the power output end of the first drive structure. When the reversed plate is in the pre-reversed position, the side portion is located between the annular fabric and the first rolled edge.

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