Method of sewing a fastener, garment having a fastener, and flexible bag

Abstract

The application discloses a chain stitch sewing method, a garment and a flexible bag with chain stitches, and relates to the field of chain stitches. The chain stitch sewing method comprises a chain tooth and a core line, and is sequentially provided with a traction section, a pre-sewing section and a sewing section. The sewing method comprises the following steps: the traction section is passed through a sewing station, and the pre-sewing section is located at the sewing station; the sewing section is overlapped on the edge of a fabric, and the sewing section is aligned with the edge; an initial traction force is applied to the traction section in front of the sewing station to pull the chain stitch to move forward, the chain tooth and the core line in the pre-sewing section are sewn in the process that the pre-sewing section passes through the sewing station, the traction force is continuously applied to the chain stitch in front of the sewing station until the sewing section passes through the sewing station, and the sewing section and the fabric are kept synchronous movement in the extending direction in the process that the sewing section passes through the sewing station; and the sewing section is sewn to the edge of the fabric in the process that the sewing section and the fabric pass through the sewing station. The application solves the problems of complex and tedious sewing methods.

Description

Technical Field

[0001] This application belongs to the technical field of chain teeth, specifically relating to a method for sewing chain teeth, a garment with chain teeth, and a flexible bag with chain teeth. Background Technology

[0002] Currently, there are various zipper tooth structures, among which the more common ones include a core thread and teeth formed by monofilaments of materials such as nylon wrapped around the core thread. In the production of some garments or flexible bags with zipper teeth, these teeth need to be sewn onto the fabric. If traditional methods are used for direct sewing, the teeth sewn onto the fabric may deform in the direction of their extension during the sewing process, resulting in inconsistent spacing between the tooth units (i.e., tooth pitch), which affects the normal opening and closing of the zipper.

[0003] To address this issue, a two-step sewing method has been proposed: first, the chain teeth are sewn together with the core thread using thread, and then the chain teeth are sewn onto the fabric as a whole using thread.

[0004] However, although the above sewing method can ensure that the tooth spacing of the chain stitches on the fabric is consistent, the above sewing method requires two separate sewing processes, which makes the sewing steps complicated and cumbersome, reducing the production efficiency of clothing or flexible bags. Summary of the Invention

[0005] The purpose of this application is to provide a method for sewing chain teeth, a garment with chain teeth, and a flexible bag with chain teeth, which can solve the problems of complex and cumbersome sewing methods in related technologies.

[0006] To solve the above-mentioned technical problems, this application is implemented as follows:

[0007] This application provides a method for sewing chain teeth, wherein the chain teeth include chain teeth and core thread, and are sequentially provided with a traction section, a pre-sewing section and a sewing section along their extension direction; the method includes:

[0008] The traction section passes through the sewing station of the sewing equipment, and the pre-sewn section is positioned at the sewing station;

[0009] Overlap the sewn section onto the edge of the fabric and align the sewn section with the edge of the fabric;

[0010] An initial traction force is applied to the traction section in front of the sewing station to pull the entire chain tooth along the extension direction, and the chain teeth and core thread in the pre-sewn section are sewn as the pre-sewn section passes through the sewing station. The traction force is continuously applied to the chain tooth in front of the sewing station until the sewn section passes through the sewing station, and the sewn section and the fabric are kept moving synchronously along the extension direction as the sewn section passes through the sewing station.

[0011] As the sewing section and the fabric pass through the sewing station, the sewing section is sewn to the edge of the fabric.

[0012] This application also provides a garment with chain teeth, including fabric and chain teeth;

[0013] The chain teeth are sewn to the edge of the fabric using the above-described sewing method.

[0014] This application embodiment also provides a flexible bag with chain teeth, including fabric and chain teeth;

[0015] The chain teeth are sewn to the edge of the fabric using the above-described sewing method.

[0016] This application employs a one-step sewing method, directly sewing the chain teeth to the edge of the fabric. Compared to the two-step sewing method used in related technologies, this application reduces the step of first sewing the chain teeth and core thread together, thereby reducing the complexity of the sewing process, simplifying the sewing steps, shortening the sewing time, and improving sewing efficiency. Furthermore, during the sewing process, the pre-sewn section is sewn first to ensure it can withstand the traction force from the traction section. This prevents the traction force from directly acting on the sewn section, ensuring that the chain tooth spacing within the sewn section remains constant during traction. This effectively prevents inconsistent chain tooth spacing within the sewn section area from affecting the normal use of subsequent chain teeth. Additionally, during the sewing of the sewn section, ensuring that the sewn section moves synchronously with the fabric prevents wrinkles caused by asynchronous movement of the chain teeth and fabric during sewing, ensuring the normal sewing of the chain teeth. Attached Figure Description

[0017] Figure 1 This is a flowchart of the chain tooth sewing method disclosed in the embodiments of this application;

[0018] Figure 2 This is a schematic diagram of the chain teeth sewn onto the fabric according to an embodiment of this application;

[0019] Figure 3 This is a cross-sectional view of the chain teeth sewn onto the fabric as disclosed in the embodiments of this application;

[0020] Figure 4 This is a partial schematic diagram of the chain stitching device, fabric, and chain teeth disclosed in the embodiments of this application;

[0021] Figure 5 This is a schematic diagram of the flexible package disclosed in the embodiments of this application.

[0022] Explanation of reference numerals in the attached figures:

[0023] 10-Fabric; 10a-Bag body;

[0024] 20-core wire;

[0025] 30-stitch;

[0026] 40 - Chain tooth; 41 - Traction section; 42 - Pre-sewn section; 43 - Sewn section;

[0027] M - Sewing station; N - Traction station. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0030] The embodiments of this application will be described in detail below with reference to the accompanying drawings and specific examples and application scenarios.

[0031] refer to Figures 1 to 5 This application discloses a method for sewing a zipper tooth 40, used to sew the zipper tooth 40 to the edge of the fabric, so that it can be opened or closed later by the interaction of a zipper pull with the zipper tooth 40. The fabric 10 can be clothing fabric, such as shirt fabric, trouser fabric, skirt fabric, etc.; or, the fabric 10 can be flexible bag fabric, such as backpack fabric, travel bag fabric, sports bag fabric, decorative bag fabric, etc. Figure 5 As shown, the fabric 10 can form a flexible bag body 10a, and the chain teeth 40 are fixed to the edge of the fabric 10 at the opening of the bag body 10a so as to facilitate the opening and closing of the opening of the bag body 10a.

[0032] Optionally, the chain tooth 40 may include chain teeth and core wire 20, with the chain teeth wrapped around the core wire 20 to form a plurality of chain tooth units spaced apart along the extension direction of the core wire 20.

[0033] To achieve traction and sewing of the chain tooth 40, the chain tooth 40 may be provided with a traction section 41, a pre-sewing section 42, and a sewing section 43, which are arranged sequentially along the extension direction of the chain tooth 40. The traction section 41 is used to withstand the initial traction force from the force-applying device (e.g., the chain tooth traction device described below), so that the entire chain tooth 40 can move along a preset direction (e.g., the extension direction of the chain tooth 40) under the action of the initial traction force. The purpose of setting the pre-sewing section 42 is to provide a deformation buffer zone in front of the sewing section 43, so that the deformation caused by the traction force can be withstood by the pre-sewing section 42, ensuring that the chain tooth units in the sewing section 43 area do not experience pitch changes due to traction. The sewing section 43 is the part sewn to the fabric 10, and after the chain tooth 40 is sewn to the edge of the fabric 10, it lays the foundation for the subsequent installation of the zipper pull.

[0034] In this embodiment, a set of sewing equipment can be used to realize the processes of pulling the chain teeth 40, feeding the fabric, and sewing the chain teeth 40 onto the fabric, thereby realizing integrated control of chain tooth 40 pulling, fabric feeding and sewing, which is beneficial to simplifying the control logic and facilitating precise control of each step.

[0035] Optionally, the sewing equipment may include a chain tooth traction device, a fabric conveying device, and a sewing head. The chain tooth traction device applies traction to the chain teeth 40, enabling them to travel along their extension direction. The fabric conveying device conveys the fabric and works in conjunction with the chain tooth traction device to achieve synchronous conveying of the chain teeth 40 and the fabric. The sewing head sews the chain teeth 40 onto the fabric.

[0036] Based on the above, the suturing method in this application embodiment includes:

[0037] S01. Pass the traction section 41 through the sewing station M of the sewing equipment and position the pre-sewn section 42 at the sewing station M.

[0038] Optionally, the traction segment 41 can be manually passed through the sewing station M and connected to the chain tooth traction device, so that the traction force can be applied to the traction segment 41 by the chain tooth traction device to enable the entire chain tooth 40 to move forward. Exemplarily, the chain tooth traction device may include a traction wheel and a pressure wheel, and the space between the traction wheel and the pressure wheel can pass through the chain tooth 40 so that the chain tooth 40 can be driven forward by the traction wheel.

[0039] In actual working conditions, the sewing station M can be located directly below the needle of the sewing machine head, so that sewing can be performed at the sewing station by moving the needle up and down. Based on this, the pre-sewn section 42 in the embodiment of this application can be located above the sewing station M and below the needle, so that the pre-sewn section 42 can be sewn by moving the needle up and down.

[0040] It should be noted that during the up-and-down movement of the needle, the suture 30 can be sewn onto the chain teeth and core thread 20 within the pre-sewn section 42. This helps to fix the chain teeth and core thread 20 within the pre-sewn section 42, improving the stability of the chain tooth unit formed by each chain tooth and core thread 20. Consequently, the pre-sewn section 42 is less prone to changes in tooth pitch after being pulled. Optionally, the suture 30 can be used to bind the chain tooth unit, or to bind or pierce the core thread 20.

[0041] S02. Place the pre-sewn section 42 over the edge of the fabric 10 and align the sewn section 43 with the edge of the fabric 10.

[0042] Considering that the function of a zipper is to join two pieces of fabric 10 together by pulling them together or to separate them by pulling them apart, the zipper teeth 40 can be positioned at the edge of the fabric 10. When placing the zipper teeth 40 on the fabric 10, the sewn section 43 overlaps the edge surface of the fabric 10, with the zipper teeth 40 positioned on the upper or lower surface of the edge of the fabric 10. Furthermore, the sewn section 43 needs to be aligned with the edge of the fabric 10 to avoid the zipper teeth 40 protruding from the edge of the fabric 10, resulting in an insecure stitch, or the edge of the fabric 10 protruding from the zipper teeth 40, causing the zipper pull to easily get stuck during subsequent use. Additionally, aligning the sewn section 43 with the edge of the fabric 10 also helps improve the appearance of the garment or flexible bag.

[0043] S03. Apply an initial traction force to the traction section 41 in front of the sewing station M to pull the entire chain tooth 40 along its own extension direction, and sew the chain teeth and core thread 20 in the pre-sewing section 42 as it passes through the sewing station M.

[0044] Optionally, the chain tooth traction device in the aforementioned sewing equipment can be used to apply an initial traction force to the traction section 41 to pull the entire chain tooth 40 forward. As the chain tooth 40 moves forward, the pre-sewn section 42 gradually passes through the sewing station M. Simultaneously, the sewing machine head sews the pre-sewn section 42, locking the chain teeth and core thread 20 within the pre-sewn section 42 area through the sewing thread 30, preventing relative movement of the chain teeth within the pre-sewn section 42 area, thus ensuring that the chain tooth pitch in the pre-sewn section 42 remains constant. It should be noted that as the sewing machine head sews the pre-sewn section 42, allowing it to follow the traction section 41, the core thread 20 within the pre-sewn section 42 can bear the traction force, ensuring that the chain tooth pitch within the pre-sewn section 42 area does not change, thus guaranteeing that the chain tooth pitch remains constant.

[0045] S04. Continuously apply traction force to the chain teeth 40 in front of the sewing station M until the sewing section 43 passes through the sewing station M, and keep the sewing section 43 and the fabric 10 moving synchronously along the extension direction of the chain teeth 40 during the process of the sewing section 43 passing through the sewing station M.

[0046] Specifically, during the conveying of the chain teeth 40 and the fabric, the sewing section 43 and the fabric can be controlled to move synchronously in the sewing station M area so that there is no relative movement between the chain teeth 40 and the fabric, thereby ensuring that the chain teeth 40 and the fabric do not wrinkle, so as to facilitate good sewing of the chain teeth 40 and the fabric.

[0047] Optionally, the chain tooth traction device and the fabric conveying device in the above-mentioned sewing equipment can be controlled separately so that their respective drive motors can rotate synchronously by a predetermined step length, thereby ensuring that the chain tooth 40 and the fabric can move synchronously.

[0048] S05. During the process of sewing section 43 and fabric 10 passing through sewing station M, sewing section 43 is sewn to the edge of fabric 10.

[0049] Specifically, when the sewing section 43 and the fabric travel to the sewing station M and are in contact with the sewing needle of the sewing machine head, the sewing section 43 and the fabric can be sewn. After the sewing section 43 is sewn, when it is subjected to traction, the chain tooth units in the sewing section 43 area will not move relative to each other, thereby ensuring that the chain tooth pitch in the sewing section 43 remains fixed.

[0050] Based on the above steps, this embodiment of the application adopts a one-step sewing method, directly sewing the chain teeth 40 to the edge of the fabric. Compared with the two-step sewing method in related technologies, this embodiment of the application reduces the step of first sewing the chain teeth 40 and the core thread 20 together, thereby reducing the complexity of the sewing steps, making the sewing steps less cumbersome, shortening the sewing time, and improving the sewing efficiency. In addition, during the sewing process, the pre-sewn section 42 can be sewn so that the pre-sewn section 42 can withstand the traction force from the traction section 41, thereby preventing the traction force from directly acting on the sewing section 43, ensuring that the distance between the chain teeth in the sewing section 43 remains constant during the traction process, effectively preventing the chain teeth distance from being inconsistent and affecting the normal use of the subsequent chain teeth 40; in addition, during the sewing process of the sewing section 43, it is ensured that the sewing section 43 moves synchronously with the fabric 10, thereby preventing wrinkles caused by the asynchronous movement of the chain teeth 40 and the fabric 10 during the sewing process, ensuring the normal sewing of the chain teeth 40.

[0051] In some embodiments, maintaining the synchronous movement of the sewing section 43 and the fabric 10 along the extension direction during the process of the sewing section 43 passing through the sewing station M includes:

[0052] During the process of the fabric 10 and the sewing section 43 passing through the sewing station M, the fabric 10 and the chain teeth 40 are controlled to move synchronously or stop intermittently along the extension direction of the chain teeth 40.

[0053] Specifically, after the fabric 10 and the sewing section 43 have traveled a certain distance, they stop, and then the sewing needle of the sewing machine head pierces the fabric 10 and the sewing section 43; then, the fabric 10 and the sewing section 43 travel a certain distance again, and the sewing needle of the sewing machine head pierces the fabric 10 and the sewing section 43 again; and so on, until the sewing section 43 and the fabric 10 are sewn together.

[0054] It should be noted here that, as the needle pierces the sewing section 43 and the fabric 10 in the up-down direction, the chain teeth 40 and the fabric 10 need to be stopped while the needle is piercing the sewing section 43 and the fabric 10. This is to prevent interference caused by the movement direction of the needle being inconsistent with the movement direction of the chain teeth 40 and the fabric 10, so as to avoid the needle bending or breaking.

[0055] Furthermore, the fabric 10 and the chain tooth 40 can be intermittently synchronized in their movement or stopping by controlling the fabric conveying device and the chain tooth traction device. Optionally, the controller can control the respective drive motors of the fabric conveying device and the chain tooth traction device separately, so that the drive motors of both can rotate synchronously by a preset step length. In addition, the controller can also control the drive motor of the sewing machine head, so that the movement of the sewing machine head can be adapted to the movement of the fabric 10 conveying device and the chain tooth traction device.

[0056] In some embodiments, the fabric 10 and the chain teeth 40 move a predetermined pitch in each intermittently synchronized cycle, the ratio of the predetermined pitch to the chain tooth pitch of the chain teeth 40 can be N, where N is a natural number greater than or equal to 1.

[0057] For example, the chain tooth 40 and the fabric can move synchronously by a predetermined pitch L1, where the chain tooth pitch of the chain tooth 40 is L0, and L1:L0=N, where N is a natural number (or a positive integer) greater than or equal to 1. Precise stitching of one chain tooth pitch can be achieved using the sewing needle of the sewing device, or stitching of different widths can be achieved across multiple chain tooth pitches.

[0058] Optionally, the controller can control the drive motors of the fabric 10 conveying device and the chain tooth traction device to synchronously complete a predetermined step length, thereby controlling the predetermined pitch of the synchronous movement of the fabric 10 and the chain tooth 40. This not only allows for the adaptation of chain teeth 40 of different specifications by setting the predetermined step length of the drive motor, thus improving the versatility of the equipment, but also allows for the adjustment of the predetermined pitch of the synchronous movement of the chain tooth 40 and the fabric 10, enabling different stitching methods with different widths.

[0059] In some embodiments, before the fabric 10 enters the sewing station M, the fabric 10 is controlled to be conveyed to the sewing station M at a first speed. After the fabric 10 enters the sewing station M, the fabric 10 is controlled to travel intermittently through the sewing station M at a second speed, and the second speed is less than the first speed.

[0060] Specifically, before the fabric 10 enters the sewing station M, the fabric 10 can be conveyed quickly, that is, conveyed at a first speed to increase the conveying speed of the fabric 10; after the fabric 10 arrives at the sewing station M, the fabric 10 and the chain teeth 40 are controlled to move synchronously at a smaller second speed so as to adapt to the movement of the sewing needle and thus meet the sewing requirements.

[0061] The embodiments of this application employ the above-described motion pattern, which can shorten the transmission time of the fabric 10 before sewing, thereby improving sewing efficiency.

[0062] In some embodiments, the fabric 10 is kept taut during the conveying process. This ensures that the fabric 10 does not wrinkle or loosen during conveying, guaranteeing smooth conveying. Furthermore, it ensures the flatness of the fabric 10 during the sewing process at the sewing station M, improving the sewing effect.

[0063] Optionally, the fabric 10 conveying device may include a bracket and a clamping plate. The clamping plate is used to clamp and tension the fabric 10 to prevent the fabric 10 from wrinkling or loosening. The bracket is used to install the clamping plate. The bracket can drive the clamping plate to move under the drive of the drive motor, thereby driving the fabric 10 it clamps to move forward.

[0064] In some embodiments, the edges of the fabric 10 may be folded before sewing the fabric 10 and the chain teeth 40. The presence of the fold increases the strength and stiffness at the edges of the fabric 10, preventing the edges from sagging. Furthermore, the chain teeth 40 can be sewn into the area where the fold of the fabric 10 is located; sewing the chain teeth 40 after this process improves the stability and reliability of the chain teeth's installation.

[0065] Optionally, the edges of the fabric 10 can be folded manually; alternatively, a folding mechanism can be provided between the fabric 10 conveying device and the sewing station M to fold the edges of the fabric 10. For example, the folding mechanism may include a folding plate and a folding motor. The folding motor drives the folding plate to rotate 180°, thereby folding the edges of the fabric 10 180° to form a fold.

[0066] In some embodiments, a traction station N may be provided in front of the sewing station M, and the chain tooth traction device may be provided at the traction station N. Continuously applying traction force to the chain teeth 40 in front of the sewing station M until the sewing segment 43 passes through the sewing station M includes:

[0067] The chain teeth 40 are sequentially tractioned through the traction station N until the sewing section 43 passes through the sewing station M.

[0068] Specifically, after passing through the sewing station M, the traction section 41 can enter the traction station N. At the traction station N, the traction section 41 is pulled by the chain tooth traction device, causing the chain tooth 40 to move forward. As the chain tooth 40 moves forward, the pre-sewn section 42, which has been sewn at the sewing station M, gradually enters the traction station N. At the traction station N, the pre-sewn section 42 is pulled by the chain tooth traction device, causing the chain tooth 40 to continue moving forward. As the chain tooth 40 continues to move forward, the pre-sewn section 42 gradually leaves the traction station N, and the sewn section 43, which has been sewn at the sewing station M, gradually enters the traction station N. At the traction station N, the sewn section 43 is pulled by the chain tooth traction device and moves forward until the sewing section 43 is completed and has completely passed through the sewing station M.

[0069] Based on the above process, the embodiments of this application can sequentially pull the traction section 41, pre-sewing section 42 and sewing section 43 of the chain tooth 40 to ensure that the chain tooth 40 moves forward steadily, thereby realizing the sewing of the pre-sewing section 42 and the sewing of the sewing section 43 respectively.

[0070] In some embodiments, after sewing the sewing section 43 to the edge of the fabric 10, the sewing method may further include cutting off the traction section 41 and the pre-sewing section 42. It should be noted that during the passage of the traction section 41 through the sewing station M and the pre-sewing section 42 through the sewing station M, the fabric 10 does not enter the sewing station M. However, when the sewing section 43 enters the sewing station M, the fabric 10 and the sewing section 43 enter the sewing station M simultaneously, and the sewing section 43 and the fabric 10 are sewn together.

[0071] Therefore, the traction section 41 and the pre-sewn section 42 are not sewn to the fabric 10, only the sewing section 43 is sewn to the fabric 10. In order to prevent the traction section 41 and the pre-sewn section 42 from adversely affecting the appearance of the garment or flexible bag after sewing, the traction section 41 and the pre-sewn section 42 can be cut off after the sewing section 43 is sewn to the fabric 10, leaving only the sewing section 43. In this way, the chain teeth 40 can cover the entire edge of the fabric 10 without affecting the appearance of the garment or flexible bag.

[0072] Optionally, the sewing equipment may also include a cutting device, which may be located in front of the sewing station M, to cut off the traction section 41 and pre-sewn section 42 located outside the fabric 10 after sewing. For example, the cutting device may include scissors.

[0073] In some embodiments, sewing the sewn section 43 to the edge of the fabric 10 includes: sewing the chain teeth and core thread 20 within the sewn section 43 area together to the edge of the fabric 10. Based on this, the installation stability of the chain teeth and core thread 20 within the sewn section 43 area can be ensured, preventing the chain teeth and core thread 20 from moving arbitrarily.

[0074] Optionally, the thread 30 may be wrapped around the chain teeth and core thread 20 in the sewn section 43 area and pierce the edge of the fabric 10 to bind the chain teeth and core thread 20 in the sewn section 43 area to the edge of the fabric 10 by means of the thread 30.

[0075] Of course, the thread 30 can also be wrapped around the chain teeth in the sewing section 43 area and pierce the edge of the core thread 20 and the fabric 10, so as to bind the chain teeth in the sewing section 43 area to the edge of the fabric 10 through the thread 30, and to lock the core thread 20 in the sewing section 43 area to the edge of the fabric 10 by piercing.

[0076] Based on the above-described sewing method for the chain teeth 40, this application also discloses a garment having chain teeth 40. The disclosed garment includes fabric 10 and chain teeth 40; wherein, the chain teeth 40 are sewn to the fabric 10 using the above-described sewing method. It should be noted that the steps for sewing the chain teeth 40 to the edge of the fabric 10 can refer to the above-described sewing method, and will not be repeated here.

[0077] Based on the above-described sewing method for the chain teeth 40, this application also discloses a flexible bag having chain teeth 40. The disclosed flexible bag includes fabric 10 and chain teeth 40; wherein, the chain teeth 40 are sewn to the fabric 10 using the above-described sewing method. It should be noted that the steps for sewing the chain teeth 40 to the edge of the fabric 10 can refer to the above-described sewing method, and will not be repeated here.

[0078] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A method for sewing chain teeth, characterized in that, The chain tooth (40) includes chain teeth and core thread (20), and is provided with a traction section (41), a pre-sewing section (42), and a sewing section (43) in sequence along its extension direction; the sewing method includes: The traction section (41) is passed through the sewing station (M) of the sewing equipment, and the pre-sewn section (42) is positioned at the sewing station (M). The sewn section (43) is placed over the edge of the fabric (10) and aligned with the edge of the fabric (10); An initial traction force is applied to the traction section (41) in front of the sewing station (M) to pull the entire chain tooth (40) along the extension direction, and the chain tooth and core thread (20) in the pre-sewn section (42) are sewn together as the pre-sewn section (42) passes through the sewing station (M). A traction force is continuously applied to the chain tooth (40) in front of the sewing station (M) until the sewing segment (43) passes through the sewing station (M), and the sewing segment (43) and the fabric (10) are kept moving synchronously along the extension direction during the process of the sewing segment (43) passing through the sewing station (M). During the process of the sewing section (43) and the fabric (10) passing through the sewing station (M), the sewing section (43) is sewn to the edge of the fabric (10).

2. The sewing method according to claim 1, characterized in that, The process of keeping the sewing section (43) and the fabric (10) moving synchronously along the extension direction during the process of the sewing section (43) passing through the sewing station (M) includes: During the process of the fabric (10) and the sewing section (43) passing through the sewing station (M), the fabric (10) and the chain teeth (40) are controlled to move synchronously or stop intermittently along the extension direction.

3. The sewing method according to claim 2, characterized in that, The fabric (10) and the chain tooth (40) move a predetermined pitch in each intermittent synchronous travel cycle, the ratio of the predetermined pitch to the chain tooth pitch of the chain tooth (40) being N, where N is a natural number greater than or equal to 1.

4. The sewing method according to claim 2 or 3, characterized in that, Before the fabric (10) enters the sewing station (M), the fabric (10) is controlled to be fed to the sewing station (M) at a first speed; After the fabric (10) enters the sewing station (M), the fabric (10) is controlled to move intermittently through the sewing station (M) at a second speed, and the second speed is less than the first speed.

5. The sewing method according to claim 1, characterized in that, During the conveying of the fabric (10), the fabric (10) is kept taut.

6. The sewing method according to claim 1, characterized in that, Before sewing the fabric (10) and the chain teeth (40), the edges of the fabric (10) are folded.

7. The sewing method according to claim 1, characterized in that, A traction station (N) is provided in front of the sewing station (M), and the continuous application of traction force to the chain teeth (40) in front of the sewing station (M) until the sewing segment (43) passes through the sewing station (M) includes: The chain teeth (40) are sequentially tractioned through the portion of the traction station (N) until the sewing section (43) passes through the sewing station (M).

8. The sewing method according to claim 1, characterized in that, After sewing the sewn section (43) to the edge of the fabric (10), the sewing method further includes: Cut off the traction section (41) and the pre-seam section (42).

9. The sewing method according to claim 1, characterized in that, The process of sewing the sewn section (43) to the edge of the fabric (10) includes: The chain teeth and the core thread (20) within the sewing section (43) area are sewn together to the edge of the fabric (10).

10. A garment with chain teeth, characterized in that, include: Fabric (10) and chain teeth (40); The chain teeth (40) are sewn to the edge of the fabric (10) using the sewing method described in any one of claims 1 to 9.

11. A flexible bag with chain teeth, characterized in that, include: Fabric (10) and chain teeth (40); The chain teeth (40) are sewn to the edge of the fabric (10) using the sewing method described in any one of claims 1 to 9.

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