A draw barrel tool to assist in positioning of a thread insert

Abstract

The application belongs to the sewing technical field, and specifically discloses a pull cylinder tool for assisting in positioning of inlaid thread, which comprises a base and a pull cylinder installed on the base, the pull cylinder comprises a V-shaped long groove with an open side, two ends of the V-shaped long groove are respectively an inlaid thread inlet and an inlaid thread outlet, and upper and lower groove walls of the V-shaped long groove gradually converge from the inlaid thread inlet to the inlaid thread outlet; the upper groove wall of the V-shaped long groove is folded upward from the inlaid thread outlet end and then extends forward along a horizontal direction to form an inlaid thread feeding platform, and the inlaid thread feeding platform is provided with a first through hole through which the inlaid thread can pass. The pull cylinder tool can realize accurate positioning of the inlaid thread in the sewing process, and effectively solves problems such as deviation and skewing that are prone to occur in manual positioning.

Description

Technical Field

[0001] This application relates to the field of sewing technology, and in particular to an auxiliary tool used with a sewing machine, especially a puller tool for assisting in stitch positioning. Background Technology

[0002] In the manufacturing process of textiles, clothing, bags, and other products, inlay work is a common decorative and reinforcing technique. A single inlay can enhance the aesthetics of a product while also providing reinforcement in certain areas, thus improving its durability.

[0003] When manually sewing piping, the alignment of the piping with the fabric edge relies entirely on the operator's eyesight. This makes it difficult to guarantee accurate positioning every time. Even experienced workers, after prolonged work, may experience visual errors due to fatigue, resulting in inconsistent distances between the piping and the fabric edge. Manual operation also makes it difficult to precisely control the direction of the piping, especially when sewing curves or complex shapes. The piping is prone to twisting and skewing, leading to irregular stitches and significantly reducing product quality. For piping designs with complex patterns or irregular shapes, manual sewing struggles to accurately reproduce the design effect. For example, when sewing intricate patterns or unique geometric shapes, it's difficult to ensure smooth and symmetrical lines manually, causing the final product to fail to meet design expectations.

[0004] Manually sewing piping requires operators to carefully align the piping while slowly pushing the fabric to sew. To maintain quality, the operating speed cannot be increased. Compared to using auxiliary clamps, completing the same number and specifications of piping stitches manually takes significantly longer. Furthermore, if the piping position is found to be inaccurate during sewing, the stitches must be removed and re-sewn, which not only increases workload but also wastes time and materials. Moreover, the time spent adjusting and fixing the piping position during manual piping further reduces production efficiency.

[0005] Therefore, developing a tool that can assist in positioning a single inlay thread to solve problems such as inaccurate positioning, low efficiency, and high skill requirements for personnel during manual operation will help operators sew the inlay thread onto the fabric more accurately and efficiently, thereby improving production efficiency and quality, and enhancing the aesthetics and competitiveness of the product. Utility Model Content

[0006] This application provides a pull tube tool for assisting in stitch positioning, in order to solve the technical problems of low positioning accuracy and limited shape in manual stitch sewing, as well as low production efficiency caused by long operation time and high rework rate.

[0007] This application provides a pull cylinder tool for assisting in wire embedding and positioning, including a base and a pull cylinder mounted on the base. The pull cylinder includes a V-shaped long groove with an open side. The two ends of the V-shaped long groove are a wire embedding inlet and a wire embedding outlet, respectively. The upper and lower side walls of the V-shaped long groove gradually converge from the wire embedding inlet to the wire embedding outlet. The upper wall of the V-shaped long groove folds upward from the wire embedding outlet end and extends forward in the horizontal direction to form a wire embedding feeding platform. The wire embedding feeding platform is provided with a first through hole for the wire to pass through.

[0008] The auxiliary thread positioning puller is used as follows: The auxiliary thread positioning puller is installed on the sewing machine table. The thread passes through the V-shaped groove, folds upwards onto the thread feeding platform, enters the first through hole, and exits through it. During this process, the V-shaped groove provides initial constraint on the thread, automatically centers it through the V-shape, and adapts to various shapes (such as round, flat, etc.). Then, after bending upwards, the thread is guided through the first through hole to enter the sewing area along a predetermined path, achieving precise positioning of the thread during sewing and effectively solving problems such as offset and skewing that easily occur with manual positioning. The puller moves in tandem with the sewing machine feeding mechanism, ensuring that the thread and fabric are fed synchronously without offset, thus ensuring the stability of the sewing process.

[0009] Furthermore, the upper and lower walls of the V-shaped groove are both bent inward to form bending pieces. The two bending pieces gradually converge from the inlet to the outlet of the inlay, forming a folding channel with the inner wall of the V-shaped groove for folding the inlay. With this structural design, the inlay enters the groove from the inlay inlet end of the V-shaped groove, and the internal structure of the groove can fold it in half.

[0010] Furthermore, a baffle plate is connected between the upper and lower bending plates. The baffle plate is close to the inlet end of the wire embedding and forms an inlet between the upper and lower bending plates and the inner wall of the V-shaped groove.

[0011] Furthermore, the pull tube also includes a spring preload mechanism, which is connected to the inlet end of the V-shaped long groove for stabilizing the tail of the inlay and preventing it from moving. At the same time, the spring pressure can be adjusted according to the thickness of the fabric and the specifications of the inlay, so that the spring can stably position the two inlays.

[0012] Furthermore, the wire feeding platform is also equipped with a pressure plate, which is located between the wire insertion outlet end of the V-shaped long groove and the first through hole, and is used to press the wire in place.

[0013] Furthermore, the edge portion of the winding feeding platform away from the winding outlet end of the V-shaped groove is bent upward to form the pressing sheet.

[0014] Furthermore, the first through hole is a flat rectangular through hole. The inlay is mostly made of rope, thin strip of cloth, etc. The flat rectangular shape of the through hole is more suitable for the shape of the inlay, which can better constrain the inlay and improve the positioning effect.

[0015] Furthermore, the auxiliary stitching positioning puller tool also includes a fabric bonding plate, which is located below the stitching feeding platform and is fixedly connected to the base; the side of the fabric bonding plate is aligned with the stitching outlet end of the first through hole.

[0016] Furthermore, all four corners of the fabric bonding plate are designed with rounded chamfers. The chamfered edges of the fabric bonding plate prevent snagging and wrinkling.

[0017] Furthermore, the fabric bonding plate has a notch on its side that aligns with the thread insertion outlet end of the first through hole. When the auxiliary thread insertion positioning puller tool is installed on the sewing machine table, the notch fits into the sewing machine presser foot. The notch on the front edge of the fabric bonding plate forms a "half" presser foot guide surface, which precisely fits into the sewing machine presser foot. The presser foot pressure is evenly transmitted to the thread and fabric through the guide surface, ensuring the sewing accuracy of narrow thread spacing.

[0018] Furthermore, the auxiliary stitching positioning tool also includes a vertically positioned limiting baffle. This limiting baffle is vertically positioned on the base, located on the side of the stitching feeding platform near the stitching outlet end of the V-shaped groove, and close to the first through hole. During the stitching process, the limiting baffle can determine and restrict the fabric position, ensuring alignment between the fabric and the stitching, thereby achieving precise positioning of the fabric during sewing and avoiding problems such as offset or skewing.

[0019] Furthermore, the auxiliary thread-embedding positioning puller tool also includes a mounting base, the base is mounted on the mounting base, and the auxiliary thread-embedding positioning puller tool is mounted on the sewing machine table via the mounting base.

[0020] Furthermore, the auxiliary inlay positioning puller tool also includes a second through hole disposed above the first through hole. The second through hole is used to assist in positioning another inlay or other fabric strip (such as lace, embroidery appliqué, etc.).

[0021] As described above, the auxiliary wire-embedding positioning puller tool of this application has the following beneficial effects: The auxiliary piping positioning tool of this application is mainly used in various fields that require piping sewing, such as piping on the placket and pocket flap edges of suits and trench coats, piping on the waistband and hem of jeans, and piping on the collar and cuffs of dresses and shirts. It can achieve precise positioning of piping during the sewing process, effectively solving the problems of offset and skewing that are easy to occur with manual positioning. Moreover, the structure is simple and can be quickly positioned and installed on the sewing machine. Through the coordinated cooperation of multiple structures, it achieves three core functions: "quick installation + positioning + adaptation", meeting the stability requirements of installation, positioning and feeding. It solves the problems of inaccurate piping positioning, low efficiency, high skill requirements for personnel and poor adaptability when operating manually, thereby improving production efficiency and quality, and enhancing the aesthetics and competitiveness of products. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0023] In the attached diagram: Figure 1 A schematic diagram of the structure of the auxiliary wire-embedding positioning puller tool provided in one embodiment of this application; Figure 2 for Figure 1 Top view of the pull-tube tool for auxiliary inlay positioning; Figure 3 This is a schematic diagram of the structure of a pull-tube tool for auxiliary wire embedding and positioning provided in another embodiment of this application.

[0024] The attached figures are labeled as follows: Base 1, V-shaped long groove 21, upper groove wall 211, bending piece 212, baffle piece 213, wire feeding platform 22, first through hole 23, pressure plate 24, spring pre-tightening mechanism 25, fabric bonding plate 3, notch 31, limit baffle piece 4, second through hole 5, mounting base 6, mounting hole 61, fixing plate 7. Detailed Implementation

[0025] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0026] In this application, unless otherwise stated, the term "multiple" means two or more.

[0027] The character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0028] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0029] It should be noted that the illustrations provided in the following embodiments are merely schematic representations of the basic concept of this application. The drawings only show components relevant to this application and are not drawn according to the actual number, shape, and size of components in implementation. In actual implementation, the form, quantity, and proportion of each component can be arbitrarily changed, and the component layout may also be more complex. The structures, proportions, sizes, etc., shown in the accompanying drawings are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this application. Therefore, they have no substantial technical significance. Any modification to the structure, change in the proportional relationship, or adjustment of the size, without affecting the effect and purpose that this application can produce, should still fall within the scope of the technical content disclosed in this application. At the same time, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this application. Changes or adjustments in their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this application.

[0030] Please see Figure 1 , Figure 1 The auxiliary wire-embedding positioning puller tool provided in one embodiment of this application, such as Figure 1 As shown, the auxiliary wire-embedding positioning puller tool includes a base 1 and a puller mounted on the base 1. The puller includes a V-shaped long groove 21 with an open side. The two ends of the V-shaped long groove 21 are the wire-embedding inlet and the wire-embedding outlet, respectively. The upper and lower sides of the groove 21 gradually converge from the wire-embedding inlet to the wire-embedding outlet. The upper groove wall 211 of the V-shaped long groove 21 is folded upward from the wire-embedding outlet end and extends forward in the horizontal direction to form a wire-embedding feeding platform 22. The wire-embedding feeding platform 22 is provided with a first through hole 23 for the wire to pass through.

[0031] The method of using the auxiliary thread positioning puller tool is as follows: Install the auxiliary thread positioning puller tool on the sewing machine table, such as... Figure 1In the direction indicated by the middle arrow, the webbing emerges from the V-shaped groove 21, folds upwards onto the webbing feed platform 22, enters the first through hole 23, and exits through it. During this process, the V-shaped groove 21 provides initial constraint on the webbing, automatically centering it through the V-shaped structure and adapting to various shapes (such as round, flat, etc.). Then, after bending upwards, the webbing is guided through the first through hole 23 along a predetermined path into the sewing area, achieving precise positioning of the webbing during the sewing process and effectively solving problems such as offset and skewing that easily occur with manual positioning. The coordinated movement of the pull tube and the sewing machine's feeding mechanism ensures that the webbing and fabric are fed synchronously without offset, guaranteeing the stability of the sewing process.

[0032] Combination Figure 1 and Figure 2 As shown in one embodiment of this application, the upper and lower walls of the V-shaped long groove 21 are both bent inward to form bent pieces 212. The two bent pieces 212 gradually approach each other from the inlet to the outlet, forming a folding channel with the inner wall of the V-shaped long groove 21 for folding the inlaid wire. With this structural design, the inlaid wire enters the groove from the inlet end of the V-shaped long groove 21, and the internal structure of the groove can fold it in half.

[0033] In one embodiment of this application, a baffle plate 213 is connected between the upper and lower bent pieces 212. The baffle plate 213 is close to the inlet end of the wire embedding and forms an inlet for the wire embedding with the upper and lower bent pieces 212 and the inner wall of the V-shaped groove 21. The baffle plate 213 can press the wire embedding at the inlet end.

[0034] In one embodiment of this application, the pull tube further includes a spring pre-tensioning mechanism 25, which is connected to the inlet end of the V-shaped groove 21 for stabilizing the tail of the inlay and preventing it from moving. Simultaneously, the spring pressure can be adjusted according to the fabric thickness and the specifications of the inlay, allowing the spring to stably position the two inlays. Exemplarily, the spring pre-tensioning mechanism 25 is formed by an S-shaped bend in a metal wire. One end of the metal wire is fixedly connected (e.g., welded) to the outer wall of the V-shaped groove 21, while the other end is free. The inlay is wound in an S-shape around the spring pre-tensioning mechanism 25, providing a certain degree of buffering and tension adjustment. During the inlay process, it can automatically adjust the pressure applied to the inlay according to the fabric thickness and the tightness of the inlay, ensuring a smooth inlay process and avoiding problems such as fabric deformation due to excessively tight inlay or sewing defects due to excessively loose inlay.

[0035] In one embodiment of this application, the winding feeding platform 22 is further provided with a pressure plate 24, which is located between the winding outlet end of the V-shaped groove 21 and the first through hole 23, and is used to press the winding. Exemplarily, the side of the winding feeding platform 22 away from the winding outlet end of the V-shaped groove 21 (i.e.,...) Figure 1The right edge area (as shown) is bent upward to form a pressure plate 24. This one-piece molding method simplifies the structure and manufacturing process of the pull tube tool.

[0036] In one embodiment of this application, the first through hole 23 is a flat rectangular through hole. The inlay is mostly a rope, a thin strip of cloth, etc. The flat rectangular shape of the through hole is more suitable for the shape of the inlay, which can better constrain the inlay and improve the positioning effect.

[0037] In one embodiment of this application, the auxiliary stitching positioning puller tool further includes a fabric bonding plate 3, which is located below the stitching feeding platform 22 and fixedly connected to the base 1; the side of the fabric bonding plate 3 is aligned with the stitching outlet end of the first through hole 23. The fabric bonding plate 3 is located below the stitching feeding platform 22, and its contact area with the fabric is polished to reduce fabric conveying resistance. All four corners of the fabric bonding plate 3 are rounded chamfers to prevent snagging and wrinkling. A notch 31 is provided on the side of the fabric bonding plate 3 aligned with the stitching outlet end of the first through hole 23. When the auxiliary stitching positioning puller tool is installed on the sewing machine table, the notch 31 is aligned with the sewing machine presser foot of the first through hole 23. The front edge of the fabric bonding plate 3 has a notch 31 to form a "half" presser foot guide surface, which is precisely fitted with the sewing machine presser foot. The presser foot pressure is evenly transmitted to the inlay and the fabric through the guide surface, ensuring the sewing accuracy of narrow thread spacing (such as 0.1~0.3mm).

[0038] In one embodiment of this application, the auxiliary winding positioning puller tool further includes a vertically arranged limiting baffle 4, which is vertically arranged on the base 1 and located on the side of the winding feeding platform 22 near the winding outlet end of the V-shaped groove 21 (i.e., Figure 1 (As shown on the left), and close to the first through hole 23. During the stitching process, the limiting baffle 4 can determine and limit the position of the fabric, ensuring that the fabric is aligned with the stitching, thereby achieving precise positioning of the fabric during the sewing process and avoiding problems such as offset or skewing.

[0039] In one embodiment of this application, the auxiliary thread-embedding positioning puller tool further includes a mounting base 6, and the base 1 is mounted on the mounting base 6, and the mounting method is, for example, a detachable connection method such as screws; the auxiliary thread-embedding positioning puller tool is mounted on the sewing machine table through the mounting base 6. Specifically, the mounting base 6 is provided with mounting holes 61 for fixing the auxiliary thread-embedding positioning single-spring puller tool on the sewing machine table. The mounting holes 61 are, for example, double-waisted holes, which facilitate quick positioning and mounting on the sewing machine table using screws, bolts and other components.

[0040] In one embodiment of this application, the auxiliary wire-embedding positioning puller tool further includes a fixing plate 7. The fixing plate 7 is L-shaped, and the outer wall of the V-shaped long groove 21 is connected to the fixing plate 7 (e.g., welded) and fixed to the base 1 by the fixing plate 7. The specific fixing method can be a detachable connection method, such as screws.

[0041] Please see Figure 3 , Figure 3 A pull-tube tool for auxiliary wire-embedding positioning provided in another embodiment of this application, such as Figure 3 As shown, the auxiliary inlay positioning puller tool also includes a second through hole 5 set above the first through hole. The second through hole 5 is used to assist in positioning another inlay or other fabric strips (such as lace, embroidery patches, etc.). Its shape is preferably a flat rectangular through hole. The width and length of the through hole can be equal to, or slightly larger or smaller than, the first through hole 23.

[0042] In the above embodiments / examples, the auxiliary stitching positioning tool is preferably made of metal (such as stainless steel). The base 1 and the mounting base 6 are both flat, preferably stainless steel plates. The four corners of the base 1 and the mounting base 6 are chamfered to avoid snagging and wrinkling. The fabric bonding plate 3 is also preferably stainless steel plate. The fabric bonding plate 3 and the base 1 can be fixedly connected together by welding or other methods. The limiting baffle 4 can be formed by bending the side of the base 1 and / or the fabric bonding plate 3 upwards, which also facilitates the fixed connection of the base 1 and the fabric bonding plate 3 by welding or other methods. In addition, the stitching feeding platform 22 can also be fixed to the fabric bonding plate 3 by welding or other methods to improve the structural stability of the stitching tool.

[0043] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. A pull-tube tool for assisting in wire embedding and positioning, characterized in that, The auxiliary wire-embedding positioning puller tool includes a base and a puller mounted on the base. The puller includes a V-shaped long groove with an open side. The two ends of the V-shaped long groove are the wire-embedding inlet and the wire-embedding outlet, respectively. The upper and lower sides of the V-shaped long groove gradually converge from the wire-embedding inlet to the wire-embedding outlet. The upper side of the V-shaped long groove folds upward from the wire-embedding outlet and extends forward in the horizontal direction to form a wire-embedding feeding platform. The wire-embedding feeding platform is provided with a first through hole for the wire to pass through.

2. The auxiliary wire-embedding positioning puller tool according to claim 1, characterized in that: The upper and lower walls of the V-shaped groove are both bent inward to form bending pieces. The two bending pieces gradually approach each other from the wire inlet to the wire outlet, and together with the inner wall of the V-shaped groove, they form a folding channel for folding the wire.

3. The auxiliary wire-embedding positioning puller tool according to claim 2, characterized in that: A baffle plate is connected between the upper and lower bending plates. The baffle plate is close to the inlet end of the wire embedding and forms an inlet between the upper and lower bending plates and the inner wall of the V-shaped groove.

4. The auxiliary wire-embedding positioning puller tool according to claim 1, characterized in that: The pull tube also includes a spring preload mechanism, which is connected to the inlet end of the V-shaped long groove for stabilizing the tail of the wire.

5. The auxiliary wire-embedding positioning puller tool according to claim 1, characterized in that: The wire feeding platform is also equipped with a pressure plate, which is located between the wire feeding outlet end of the V-shaped long groove and the first through hole, and is used to press the wire in place.

6. The auxiliary wire-embedding positioning puller tool according to claim 5, characterized in that: The edge portion of the winding feeding platform away from the winding outlet end of the V-shaped groove is bent upwards to form the pressing sheet.

7. The auxiliary wire-embedding positioning puller tool according to claim 1, characterized in that: The first through hole is a flat rectangular through hole.

8. The auxiliary stitching positioning tool according to any one of claims 1 to 7, characterized in that: The auxiliary stitching positioning puller tool also includes a fabric bonding plate, which is located below the stitching feeding platform and is fixedly connected to the base; the side of the fabric bonding plate is aligned with the stitching outlet end of the first through hole.

9. The auxiliary wire-embedding positioning puller tool according to claim 8, characterized in that: The four corners of the fabric bonding board are all set with an arc-shaped chamfer structure; And / or, the side of the fabric bonding plate that is aligned with the stitching outlet end of the first through hole is provided with a notch, and when the auxiliary stitching positioning puller tool is installed on the sewing machine table, the notch is in contact with the sewing machine presser foot.

10. The auxiliary winding positioning puller tool according to any one of claims 1 to 7, characterized in that: The auxiliary winding positioning puller tool also includes a vertically arranged limiting baffle. The limiting baffle is vertically arranged on the base, located on the side of the winding feeding platform near the winding outlet end of the V-shaped long groove, and close to the first through hole. And / or, the auxiliary thread-embedding positioning puller tool further includes a mounting base, the base is mounted on the mounting base, and the auxiliary thread-embedding positioning puller tool is mounted on the sewing machine table via the mounting base; And / or, the auxiliary wire-insertion positioning puller tool further includes a second through hole disposed above the first through hole.

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