A multi-layer inlay positioning puller tool

Abstract

This application belongs to the field of sewing technology, specifically disclosing a multi-layer inlay positioning pull tube tool, including a base and a pull tube assembly mounted on the base. The pull tube assembly includes at least two pull tubes. Each pull tube includes a V-shaped long groove with an open side, the two ends of which are the inlay inlet and the inlay outlet, respectively. The upper and lower side walls of the V-shaped long groove gradually converge from the inlay inlet to the inlay outlet. The upper wall of the V-shaped long groove folds upward from the inlay outlet end and extends forward in the horizontal direction to form an inlay feeding platform. The inlay feeding platform has a through hole for the inlay to pass through. The side openings of the V-shaped long grooves of the multiple pull tubes face the same direction and are arranged front and back in the horizontal direction. The inlay feeding platforms of the multiple pull tubes are stacked vertically. Using this pull tube tool, precise positioning of multi-layer inlay can be achieved during the sewing process, ensuring uniform inlay spacing and improving finished product quality and production efficiency.

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 multi-layer inlay positioning puller tool. Background Technology

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

[0003] When manually sewing piping, relying entirely on the operator's eyesight to align the piping with the fabric edge makes it difficult to guarantee accurate positioning each time. A single-spring pull tube is a relatively common piping sewing aid, typically consisting of a spring assembly and a pull tube. The spring's elasticity helps position the piping, and the pull tube guides the piping's direction to complete the piping sewing. However, a single-spring pull tube can only position one piping thread at a time. In actual production, when sewing double or more layers of piping, a single-spring pull tube needs to be used in two or more separate piping operations, which can easily lead to uneven piping and inconsistent spacing, affecting the finished product's appearance. Utility Model Content

[0004] This application provides a multi-layer inlay positioning pull tube tool to solve the limitations of single spring pull tubes when sewing multi-layer inlays, ensuring uniform spacing between adjacent inlays and improving finished product quality and production efficiency.

[0005] This application provides a multi-layer inlay positioning pull tube tool, including a base and a pull tube assembly mounted on the base, the pull tube assembly including at least two pull tubes; 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-insertion inlet and a wire-insertion outlet, respectively. The upper and lower walls of the V-shaped long groove gradually converge from the wire-insertion inlet to the wire-insertion outlet. The upper wall of the V-shaped long groove folds upward from the wire-insertion outlet end and extends forward in the horizontal direction to form a wire-insertion feeding platform. The wire-insertion feeding platform is provided with through holes for wire insertion. The V-shaped grooves of the multiple pull cylinders have the same side opening orientation and are arranged in a horizontal direction; the wire feeding platforms of the multiple pull cylinders are stacked vertically.

[0006] The method of using the multi-layer inlay positioning puller tool is as follows: The multi-layer inlay positioning puller tool is installed on the sewing machine table. Each puller serves as an independent inlay channel, guiding different inlay threads out from the same outlet. Specifically, the inlay thread first passes through the V-shaped groove, then folds upwards onto the inlay feeding platform, enters the through hole, and exits through it. During this process, the V-shaped groove provides initial constraint on the inlay thread, automatically centering it through the V-shaped structure and adapting to various shapes (such as round, flat, etc.). Then, after bending upwards, the inlay thread is guided through the through hole along a predetermined path into the sewing area, achieving precise positioning of the multi-layer inlay during the sewing process. This effectively solves the problems of offset and skewing that easily occur with manual positioning, and also addresses the issues of uneven inlay and spacing that easily arise when using a single-spring puller for multiple inlay sewing operations. The puller moves in tandem with the sewing machine's feeding mechanism, ensuring that the inlay thread and fabric are fed synchronously without offset, thus ensuring the stability of the sewing process.

[0007] Furthermore, the pull tube assembly includes a first pull tube and a second pull tube, the V-shaped long groove of the first pull tube is located in front of the V-shaped long groove of the second pull tube, and the wire feeding platform of the first pull tube is located above the wire feeding platform of the second pull tube.

[0008] 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.

[0009] 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.

[0010] 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.

[0011] 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 through hole, and is used to press the wire in place.

[0012] 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.

[0013] Furthermore, the multi-layer inlay positioning puller tool also includes a fabric bonding plate, which is disposed below the inlay feeding platform located at the bottom and is fixedly connected to the base; the side of the fabric bonding plate is aligned with the inlay outlet end of the through hole.

[0014] Furthermore, the four corners of the fabric bonding plate are all designed with rounded chamfers. The chamfered edges of the fabric bonding plate prevent snagging and wrinkling.

[0015] Furthermore, the fabric bonding plate has a notch on its side, which aligns with the inlay outlet end of the through hole. When the multi-layer inlay 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 inlay and fabric through the guide surface, ensuring the sewing accuracy of narrow thread spacing.

[0016] Furthermore, the multi-layer inlay positioning puller tool also includes a vertically arranged limiting baffle. This limiting baffle is vertically positioned on the base, located on the side of the inlay feeding platform near the inlay outlet end of the V-shaped long groove, and close to the through hole. During the inlay process, the limiting baffle can determine and restrict the fabric position, ensuring alignment between the fabric and the inlay, thereby achieving precise positioning of the fabric during sewing and avoiding problems such as offset or skewing.

[0017] Furthermore, the multi-layer inlay positioning puller tool also includes a mounting base, the base is mounted on the mounting base, and the multi-layer inlay positioning puller tool is mounted on the sewing machine table via the mounting base.

[0018] Furthermore, the pull tube assembly is detachably connected to the base, and the position of at least one pull tube can be adjusted left and right to adjust the wire spacing.

[0019] As described above, the multi-layer inlay positioning puller tool of this application has the following beneficial effects: The multi-layer inlay positioning pull tube tool of this application is mainly used in various fields that require multi-layer inlay sewing, such as double inlay process pockets and plackets in clothing, and double inlay process in bedding (such as duvet covers, pillowcases, and cushion inner and outer diameters). It can achieve precise positioning of multi-layer inlay during the sewing process, and has a simple structural design that can be quickly positioned and installed on the sewing machine. Through the coordinated cooperation of multiple structures, it achieves three core functions of "quick installation + positioning + adaptation", meets the stability requirements of installation, positioning, and feeding, and improves production efficiency and quality. Attached Figure Description

[0020] 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.

[0021] In the attached diagram: Figure 1 This is a schematic diagram of the structure of a double-layer inlay positioning pull tube tool provided in an embodiment of this application; Figure 2 for Figure 1 Top view of a multi-layer inlay positioning pull tube tool.

[0022] The attached figures are labeled as follows: Base 1, First pull cylinder I, Second pull cylinder II, V-shaped long groove 21, Upper groove wall 211, Bending piece 212, Material stop piece 213, Embedded wire feeding platform 22, Through hole 23, Pressure plate 24, Spring pre-tightening mechanism 25, Fabric bonding plate 3, Notch 31, Limiting stop piece 4, Mounting seat 5, Mounting hole 51, Fixing plate 6. Detailed Implementation

[0023] 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.

[0024] In this application, unless otherwise stated, the term "multiple" means two or more.

[0025] The character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0026] 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.

[0027] 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.

[0028] One embodiment of this application provides a multi-layer inlay positioning pull tube tool, such as... Figure 1 and Figure 2 As shown, the multi-layer inlay positioning puller tool includes a base 1 and a puller assembly mounted on the base 1. The puller assembly includes at least two pullers, each serving as an independent inlay channel, guiding different inlay threads out from the same outlet. The pullers move in coordination with the sewing machine's feeding mechanism, ensuring that the inlay threads and fabric are fed synchronously without deviation, thus ensuring the stability of the sewing process. In an exemplary embodiment, the puller assembly includes two pullers, namely a first puller I and a second puller II.

[0029] Combination Figure 1 and Figure 2 As shown, each pull cylinder includes a V-shaped long groove 21 with an open side. The two ends of the V-shaped long groove 21 are the wire-inserting inlet and the wire-inserting outlet, respectively. The upper and lower walls of the V-shaped long groove 21 gradually converge from the wire-inserting inlet to the wire-inserting outlet. The upper wall 211 of the V-shaped long groove 21 folds upward from the wire-inserting outlet end and extends horizontally forward to form a wire-inserting feeding platform 22. The wire-inserting feeding platform 22 is provided with through holes 23 for wire insertion. In use, as... Figure 1In the direction indicated by the middle arrow, the inlay thread first passes through the V-shaped groove 21, then folds upwards onto the inlay thread feeding platform 22, before entering the through hole 23 and exiting through it. During this process, the V-shaped groove 21 provides initial constraint on the inlay thread, automatically centering it through the V-shaped structure and adapting to various shapes (such as round, flat, etc.). Then, after bending upwards, the inlay thread is guided through the through hole 23 along a predetermined path into the sewing area, achieving precise positioning of multiple layers of inlay thread during the sewing process. The through hole 23 is preferably a flat rectangular through hole. Since inlay threads are often ropes, thin strips of fabric, etc., a flat rectangular through hole better matches the shape of the inlay thread, better constraining it and improving positioning. The width of the through holes 23 of multiple pull tubes can be the same or different, specifically set according to the inlay thread width requirements. Ideally, it should match the width of the inlay thread to avoid left-right movement, offset, or skewing of the inlay thread. For example, as shown... Figure 1 and 2 As shown, the width of the lower through hole 23 is greater than the width of the upper through hole 23.

[0030] The V-shaped grooves 21 of multiple pull tubes have their side openings facing the same direction (i.e., away from the wire-insertion outlet end of the through hole 23), and are arranged front and back in a horizontal direction (i.e., arranged sequentially in the direction away from the wire-insertion outlet end of the through hole 23). Figure 1 As shown, if the wire-insertion outlet end of the through hole 23 is defined as the front, then the side openings of the first pull tube I and the second pull tube II both face the rear, and the V-shaped long groove 21 of the first pull tube I is located in front of the V-shaped long groove 21 of the second pull tube II.

[0031] Multiple feed platforms 22 for threaded tubes are stacked vertically in a vertical manner. For example... Figure 1 As shown, the wire feeding platform 22 of the first pull cylinder I is located above the wire feeding platform 22 of the second pull cylinder II.

[0032] Furthermore, the multiple threaded feeding platforms 22 of the pull tubes are staggered vertically, and the staggered spacing can be set according to the preset spacing of the two threaded tubes.

[0033] Furthermore, the pull tube assembly is detachably connected to the base 1, and the position of at least one pull tube can be adjusted left and right to adjust the stitching spacing. To achieve the above effect, in one embodiment of this application, the base is provided with an oblong hole, and the pull tube is installed on the base by screws and other components. By adjusting the left and right position of the screw in the oblong hole, the staggered spacing of the upper and lower stitching feeding platforms 22 can be adjusted to match multi-layer stitching with different spacings.

[0034] To facilitate the installation of the pull cylinder onto the base 1, in one embodiment of this application, the multi-layer inlaid positioning pull cylinder tool further includes multiple fixing plates 6. Each fixing plate 6 is L-shaped, with the outer wall of the V-shaped long groove 21 connected to the fixing plate 6 (e.g., welded). The pull cylinder is then installed onto the base 1 via the fixing plates 6. Specifically, holes are drilled in the fixing plates 6, aligned with the oblong holes on the base 1, and the pull cylinder is then installed onto the base 1 using screws or other components. This structural design is simple and facilitates quick assembly and disassembly.

[0035] Please refer to Figure 1 and Figure 2 In some embodiments 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 upper and lower bent pieces 212 gradually approach each other from the infeed inlet to the infeed outlet, and together with the inner wall of the V-shaped long groove 21, they form a folding channel for folding the infeed. With this structural design, the infeed enters the groove from the infeed inlet end of the V-shaped long groove 21, and the internal structure of the groove can fold it in half.

[0036] Furthermore, 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.

[0037] Furthermore, 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, with one end fixedly connected (e.g., welded) to the outer wall of the V-shaped groove 21, and the other end being a free end. 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.

[0038] Furthermore, 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 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 1 The 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.

[0039] Furthermore, in one embodiment of this application, the multi-layer inlay positioning puller tool further includes a fabric bonding plate 3, which is disposed below the lowest inlay feeding platform 22, such as... Figure 1 As shown, the fabric bonding plate 3 is located below the thread feeding platform 22 of the second pull tube II and is fixedly connected to the base 1; the side of the fabric bonding plate 3 is aligned with the thread outlet end of the through hole 23. The fabric bonding plate 3 is set below the thread feeding platform 22, and its contact area with the fabric is polished to reduce fabric feeding resistance. The four corners of the fabric bonding plate 3 are all set with a rounded chamfer structure to avoid snagging and wrinkling. The side of the fabric bonding plate 3 aligned with the thread outlet end of the through hole 23 is provided with a notch 31. When the multi-layer thread positioning pull tube tool is installed on the sewing machine table, the notch 31 is in contact with the sewing machine presser foot of the through hole 23. The front edge of the fabric bonding plate 3 is provided with a notch 31 to form a "half" presser foot guide surface, which is precisely in contact with the sewing machine presser foot. The presser foot pressure is evenly transmitted to the thread and fabric through the guide surface to ensure the sewing accuracy of narrow thread spacing (such as 0.1~0.3mm).

[0040] Furthermore, in one embodiment of this application, the multi-layer 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 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.

[0041] Furthermore, in one embodiment of this application, the multi-layer stitching positioning puller tool further includes a mounting base 5, with the base 1 mounted on the mounting base 5, and the mounting method is, for example, a detachable connection method such as screws; the multi-layer stitching positioning puller tool is mounted on the sewing machine table via the mounting base 5. Specifically, the mounting base 5 is provided with mounting holes 51 for fixing the single-spring puller tool for auxiliary stitching positioning on the sewing machine table. The mounting holes 51 are, for example, double-waisted holes, which facilitate quick positioning and mounting on the sewing machine table using screws, bolts, and other components; preferably, the length direction of the double-waisted holes is parallel to the stitching feeding direction of the stitching feeding platform 22, which facilitates adjustment of the tool position.

[0042] In the above embodiments / examples, the multi-layer inlay positioning pull tube tool is preferably made of metal (such as stainless steel). The base 1 and the mounting base 5 are both flat, preferably stainless steel plates. The four corners of the base 1 and the mounting base 5 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 together by welding or other methods.

[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 multi-layer wire-inlay positioning draw-can tool, characterized by, The multi-layer inlay positioning pull tube tool includes a base and a pull tube assembly mounted on the base, the pull tube assembly including at least two pull tubes; 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-insertion inlet and a wire-insertion outlet, respectively. The upper and lower walls of the V-shaped long groove gradually converge from the wire-insertion inlet to the wire-insertion outlet. The upper wall of the V-shaped long groove folds upward from the wire-insertion outlet end and extends forward in the horizontal direction to form a wire-insertion feeding platform. The wire-insertion feeding platform is provided with through holes for wire insertion. The V-shaped grooves of the multiple pull cylinders have the same side opening orientation and are arranged in a horizontal direction; the wire feeding platforms of the multiple pull cylinders are stacked vertically.

2. The multi-layer wire positioning draw cylinder tool of claim 1, wherein: The pull tube assembly includes a first pull tube and a second pull tube, wherein the V-shaped long groove of the first pull tube is located in front of the V-shaped long groove of the second pull tube, and the wire feeding platform of the first pull tube is located above the wire feeding platform of the second pull tube.

3. The multi-layer wire positioning draw cylinder tool of claim 1, wherein: 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.

4. The multi-layer wire positioning draw cylinder tool of claim 3, wherein: 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.

5. The multi-layer wire positioning draw cylinder tool of claim 1, wherein: 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.

6. The multi-layer wire positioning draw cylinder tool of claim 1, wherein: 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 through hole, and is used to press the wire in place.

7. The multi-layer wire positioning draw cylinder tool of claim 6, wherein: 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 plate.

8. The multi-layered wire positioning collet tool according to any one of claims 1 to 7, wherein: The multi-layer inlay positioning puller tool also includes a fabric bonding plate, which is located below the lowest inlay feeding platform and is fixedly connected to the base; the side of the fabric bonding plate is aligned with the inlay outlet end of the through hole.

9. The multi-layer wire positioning draw cylinder tool of claim 8, wherein: The four corners of the fabric bonding board are all set with a rounded chamfer structure; And / or, the side of the fabric bonding plate that is aligned with the stitching outlet end of the through hole is provided with a notch, and when the multi-layer stitching positioning puller tool is installed on the sewing machine table, the notch is in contact with the sewing machine presser foot.

10. The multi-layer inlay positioning puller tool according to any one of claims 1 to 7, characterized in that: The multi-layer embedding 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 embedding feeding platform near the embedding outlet end of the V-shaped long groove, and close to the through hole. And / or, the multi-layer inlay positioning puller tool further includes a mounting base, the base is mounted on the mounting base, and the multi-layer inlay positioning puller tool is mounted on the sewing machine table via the mounting base; And / or, the pull tube assembly is detachably connected to the base, and the position of at least one pull tube can be adjusted left and right to adjust the wire spacing.

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