Elastic sewing tool

Abstract

The utility model provides a kind of rubber thread sewing tool, it is related to rubber thread sewing field, and the scheme used is: including cloth guide piece, the cloth guide piece includes the feed part and guide part being connected;Rubber thread guide piece, the rubber thread guide piece includes the extension and inner extension part being connected, the inner extension part is arranged in the guide part inside, along the feeding direction, the extension part is arranged in the cloth guide piece rear;Rubber thread clamping assembly, the rubber thread clamping assembly includes clamping sleeve, the clamping sleeve is arranged on the extension part;Connecting assembly, the connecting assembly is connected with the cloth guide piece, and the connecting assembly is used to be connected with sewing machine workstation connection.The utility model can replace hand to ensure that rubber thread tension is uniform and stable, and improve rubber thread sewing quality.

Description

Technical Field

[0001] This utility model relates to the field of elastic band sewing, and in particular to an elastic band sewing fixture. Background Technology

[0002] In the home textile industry, products such as bedspreads often require elastic bands for sewing to achieve elastic shrinkage at the edges, in order to ensure the product fit and performance. Currently, elastic band sewing is still mainly done manually in small and medium-sized home textile enterprises.

[0003] In existing technologies, the process of hand-sewing elastic bands typically involves workers first cutting the elastic band to the corresponding length, then laying it flat on the edge of home textile products such as bedspreads, aligning it, and holding the joint between the elastic band and the fabric to prevent shifting. During sewing, the worker holds the fabric close to the sewing machine needle with one hand while simultaneously pulling the elastic band with the other hand to apply tension, allowing the elastic band and fabric to move forward synchronously and complete the sewing. During the process, the pulling force needs to be adjusted according to the tightness of the fabric. If the elastic band is not long enough or wrinkles appear, it needs to be manually cut and rejoined before continuing to sew. The entire process relies on the worker's skill and feel, and everything from positioning the elastic band, controlling the tension, to handling breaks is done manually, lacking standardized operating procedures and auxiliary tools.

[0004] However, when using hand sewing, workers rely entirely on feel and experience to control the tension of the elastic band, which cannot guarantee stable tension. When the tension is too low, the elastic band is loose and does not fit tightly with the fabric. After sewing, the visible stitch is easy to get stuck in the gap between the fabric and the elastic band, forming a "dropped" appearance. When the tension is too high, the elastic band is overstretched, and the shrinkage after sewing is uneven, resulting in unevenness on the surface and ultimately damaging the flatness of the product's appearance. At the same time, the need for manual labor ultimately leads to low production efficiency, high rework rate, and increased costs and delivery pressure. Utility Model Content

[0005] To address the problems of poor quality and low efficiency in the existing technology of elastic band sewing, this utility model provides an elastic band sewing fixture that can replace manual labor to ensure uniform and stable elastic band tension and improve the quality of elastic band sewing.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a rubber band sewing fixture, comprising: a fabric guide, the fabric guide including a feeding part and a guiding part connected to each other, the cross-section of the feeding part and the cross-section of the guiding part both having a horizontally arranged U-shaped structure and the openings being arranged opposite each other, the guiding end of the feeding part being connected to one end of the guiding part, and the feeding end of the feeding part being located outside the guiding part; and a rubber band guide, the rubber band guide including an extension part and an inner extension part connected to each other, the inner extension part being disposed inside the guiding part, and the rubber band being able to pass through the inner extension part. The extension portion, extending along the feeding direction, is located at the rear of the fabric guide; an elastic band clamping assembly includes a clamping sleeve disposed on the extension portion, the clamping sleeve including an opposing mounting wall and a pressure wall, a pressure plate being provided on the inner surface of the mounting wall, the pressure plate being made of elastic material, the elastic band being able to pass through between the pressure plate and the pressure wall, both the pressure plate and the pressure wall being able to generate sliding friction with the elastic band; a connecting assembly, the connecting assembly being connected to the fabric guide, the connecting assembly being used to connect to the sewing machine worktable.

[0007] This invention, through the cooperation of a fabric guide, an elastic band guide, and an elastic band clamping assembly, ensures that the fabric accurately wraps around the elastic band, preventing misalignment. At the same time, the elastic band clamping assembly generates sliding friction on the elastic band, which, with the cooperation of the sewing machine's feed dogs, pulls the elastic band, replacing the function of manual sewing. This ensures that the elastic band experiences uniform and stable tension during the sewing process, improving the sewing quality of the elastic band.

[0008] Furthermore, an adjusting stud is provided through the clamping sleeve, and the end of the adjusting stud abuts against the surface of the pressure plate, allowing the pressure plate to move closer to and further away from the pressure wall.

[0009] This invention allows for adjustment of the distance between the pressure plate and the pressure wall by setting an adjustment stud. On the one hand, it can accommodate rubber bands of different thicknesses. On the other hand, it can adjust the clamping force on the rubber band according to process requirements, thereby adjusting the tension of the rubber band.

[0010] Furthermore, the extension includes an extension sub-part one and an extension sub-part two connected to each other. The extension sub-part one is horizontally arranged and its front part is connected to the inner extension. The extension sub-part one is provided with a guide bevel at its rear. The extension sub-part two is vertically arranged and is connected to the side of the rear part of the extension sub-part one away from the guide bevel. The clamping sleeve is provided on the side of the upper end of the extension sub-part two away from the extension sub-part one.

[0011] This invention, through the vertically arranged extension part two, ensures that the rubber band is fed from the side of the worker's body rather than in front of him, thus not obstructing the worker's view, allowing for a more upright sitting posture and reducing fatigue. On the other hand, the extension part two increases the distance between the pressure plate and the inner extension part, and the transition curved surface plays a guiding role, making the rubber band deform evenly, thereby ensuring uniform tension of the rubber band.

[0012] Furthermore, a limiting ring is provided on the second extension sub-part, the limiting ring being located at the lower part of the clamping sleeve and on the same side as the clamping sleeve.

[0013] Furthermore, a limit ring 2 is provided on the guide slope.

[0014] Furthermore, the first extension sub-part and the second extension sub-part are connected by a transition surface.

[0015] Furthermore, the connecting assembly includes a mounting plate for connecting to a sewing machine workbench, and a swing arm rotatably connected to the mounting plate, the swing arm being connected to the fabric guide.

[0016] This invention, by setting a swing arm, allows the fabric guide and the elastic guide to be swung away from the sewing machine needle when installing the elastic, leaving enough operating space to facilitate the insertion of the elastic into the fixture.

[0017] Furthermore, a drive plate is provided on one side of the guide portion, and the drive plate is disposed opposite to the feed end.

[0018] This utility model, by setting a drive plate, makes it easy for workers to drive the tooling to rotate.

[0019] Furthermore, the connecting assembly also includes an adjustment plate with an adjustment hole, which is a straight slot hole, and the adjustment plate is connected to the swing arm through the adjustment hole.

[0020] This invention features an adjustment hole to facilitate adjustment of the relative position of the fabric guide and the connecting assembly, adapting to elastic bands of different widths.

[0021] Furthermore, a reinforcing rod is obliquely provided between the second extension portion and the fabric guide.

[0022] This invention, by setting a reinforcing rod, greatly avoids the deformation of the extension part two under the action of the rubber band reaction force, thus affecting the stable control of the rubber band tension.

[0023] As can be seen from the above technical solutions, this utility model has the following advantages: This utility model provides a rubber band sewing fixture. Through the cooperation of a fabric guide, a rubber band guide, and a rubber band clamping assembly, it ensures that the fabric accurately wraps around the rubber band, preventing misalignment. Simultaneously, the rubber band clamping assembly generates sliding friction on the rubber band, which, in conjunction with the sewing machine's feed dogs, pulls the rubber band, replacing manual labor and ensuring uniform and stable tension on the rubber band during sewing, thus improving sewing quality. The adjustable stud allows for adjustment of the distance between the pressure plate and the pressure wall, accommodating rubber bands of different thicknesses and allowing for adjustment of the clamping force to control the tension of the rubber band according to process requirements. The vertically positioned extension section ensures that the rubber band enters from the worker's side rather than in front, preventing obstruction of the worker's view and allowing for a more upright sitting posture. The design is effective and fatigue-resistant. Furthermore, the extension section two increases the distance between the pressure plate and the inner extension, while the transition surface acts as a guide, ensuring uniform deformation of the elastic band and thus uniform elastic tension. The guide rings one and two prevent the elastic band from deviating from the extension section, thus maintaining sewing quality. The swing arm allows the fabric guide and elastic band guide to be swung away from the sewing machine needle during installation, providing sufficient operating space for inserting the elastic band. The drive plate facilitates worker rotation of the fixture. Adjustment holes allow for easy adjustment of the relative position of the fabric guide and connecting components, accommodating elastic bands of different widths. The reinforcing rod greatly prevents the extension section two from deforming under the reaction force of the elastic band, thus ensuring stable control of the elastic band tension. Attached Figure Description

[0024] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a structural diagram illustrating a specific embodiment of the present invention. Figure 1 .

[0026] Figure 2 This is a structural diagram illustrating a specific embodiment of the present invention. Figure 2 .

[0027] Figure 3 This is a structural diagram illustrating a specific embodiment of the present invention. Figure 3 .

[0028] Figure 4 This is a schematic diagram of the assembly structure of the elastic band clamping component in a specific embodiment of this utility model.

[0029] In the diagram, 1. Fabric guide; 101. Feeding section; 1011. Feeding end; 1012. Guide end; 102. Guide section; 2. Elastic band guide; 201. Inner extension; 202. Extension section; 2021. Extension sub-section one; 2022. Extension sub-section two; 2023. Guide bevel; 203. Transition surface; 3. Elastic band clamping assembly; 301. Pressure plate; 302. Adjusting stud; 303. Clamping sleeve; 3031. Mounting wall; 3032. Pressure wall; 4. Connecting assembly; 401. Mounting plate; 402. Swing arm; 403. Adjusting hole; 404. Adjusting plate; 5. Limiting ring two; 6. Limiting ring one; 7. Drive plate; 8. Elastic band; 9. Reinforcing rod. Detailed Implementation

[0030] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0031] like Figures 1 to 3As shown, this specific embodiment provides an elastic band sewing fixture, including a fabric guide 1, an elastic band guide 2, an elastic band clamping assembly 3, and a connecting assembly 4. The fabric guide 1 includes a feed section 101 and a guide section 102 connected to each other. The cross-sections of the feed section 101 and the guide section 102 are both horizontally arranged U-shaped structures with their openings facing each other. The guide end 1012 of the feed section 101 is connected to one end of the guide section 102. The feed end 1011 of the feed section 101 is located outside the guide section 102. The fabric is manually driven from the feed end 1011 into the guide section 102, forming a rolled edge. The elastic band guide 2 includes an extension section 202 and an inner extension section connected to each other. The inner extension section is disposed inside the guide section 102, and the elastic band 8 can pass through the inner extension section. Along the feeding direction, the extension 202 is disposed at the rear of the fabric guide 1; the elastic band clamping assembly 3 includes a clamping sleeve 303, which is disposed on the extension 202. The clamping sleeve 303 includes a mounting wall 3031 and a pressure wall 3032 disposed opposite to each other. A pressure plate 301 is disposed on the inner surface of the mounting wall 3031. The pressure plate 301 is made of elastic material, and the elastic band can pass through the pressure plate 301 and the pressure wall 3032. Both the pressure plate 301 and the pressure wall 3032 can generate sliding friction with the elastic band 8. Through the action of the pressure plate 301 and the sewing machine feed dog, a pulling force can be generated on the elastic band 8; the connecting assembly 4 is connected to the fabric guide 1, and the connecting assembly 4 is used to connect to the sewing machine worktable. This fixture is installed on the worktable for use.

[0032] This invention, through the cooperation of the fabric guide 1, the elastic band guide 2, and the elastic band clamping assembly 3, ensures that the fabric accurately wraps around the elastic band 8, preventing misalignment. At the same time, the pressure plate 301 of the elastic band clamping assembly 3 exerts pressure on the elastic band 8. Under the synergistic action of the sewing machine feed dog, a backward sliding friction force is generated when the elastic band 8 is fed, thereby pulling the elastic band 8 and replacing the action of manual sewing. This ensures that the elastic band 8 is subjected to uniform and stable tension during the sewing process, improving the sewing quality of the elastic band 8.

[0033] Because elastic bands vary in thickness and different products have different tensile strength requirements, in order to improve the flexibility of use, such as Figure 2 and Figure 4As shown, an adjusting stud 302 is provided through the clamping sleeve 303. The end of the adjusting stud 302 abuts against the surface of the pressure plate 301. The pressure plate 301 can move closer to and further away from the pressure wall 3032. When the adjusting stud 302 rotates, it pushes the pressure plate 301 closer to the pressure wall 3032, increasing the pressure of the pressure plate 301 on the rubber band and thus increasing the friction. The tension on the rubber band 8 during feeding increases. When the adjusting stud 302 rotates in the opposite direction, the pressure plate 301 moves away from the pressure wall 3032 under its own elastic force, reducing the pressure on the rubber band 8 and decreasing the tension on the rubber band 8. In this specific embodiment, the pressure plate 301 is made of spring steel. One end of the pressure plate 301 extends out of the clamping sleeve 303 and bends to be welded to the mounting wall 3031 of the clamping sleeve 303. The clamping sleeve 303 is threadedly connected to the adjusting stud 302.

[0034] The extension 202 of this tooling can adopt a planar structure, with the clamping sleeve 303 horizontally positioned at the rear end of the extension 202. The elastic band 8 is fed from in front of the worker, but this obstructs the operator's view, requiring them to tilt their body while sewing, which can easily lead to lower back fatigue over time. To solve this technical problem, such as... Figures 1 to 3 As shown, in this specific embodiment, the extension 202 includes a first extension sub-part 2021 and a second extension sub-part 2022 connected to each other. The first extension sub-part 2021 is horizontally arranged and its front part is connected to the inner extension. A guide bevel 2023 is provided at the rear of the first extension sub-part 2021. The second extension sub-part 2022 is vertically arranged and is connected to the rear part of the first extension sub-part 2021 away from the guide bevel 2023. The clamping sleeve 303 is disposed on the upper end of the second extension sub-part 2022 away from the first extension sub-part 2021. The first extension sub-part 2021 and the second extension sub-part 2022 are connected by a transition curved surface 203. The elastic band 8 passes through the clamping sleeve 303 and then exits from the guide bevel. The elastic band 8 is flipped up and enters the inner extension 201 from the upper surface of the extension part 2021. This arrangement ensures that the elastic band 8 enters from the side of the worker's body rather than in front of them, thus not obstructing the worker's view, allowing for a more upright posture and reducing fatigue. On the other hand, the extension part 2022 increases the distance between the pressure plate 302 and the inner extension 201, and the transition curved surface 203 acts as a guide, ensuring uniform deformation of the elastic band 8 and thus uniform tension, improving the stability of the sewing. Furthermore, to prevent misalignment between the elastic band 8 and the extension part 202, the extension part 2022 is provided with a limiting ring 6. The limiting ring 6 is located at the lower part of the clamping sleeve 303 and on the same side as the clamping sleeve 303. The guide bevel 2023 is provided with the limiting ring 5.

[0035] In use, the fabric guide 1 is close to the sewing machine needle, and the space is small, making it inconvenient to pull the elastic band 8 out from the elastic band guide part 102. To improve the convenience of operation, the connecting component 4 includes a mounting plate 401 with connecting bolts. The mounting plate 401 is used to connect to the sewing machine worktable. The mounting plate 401 is rotatably connected to a swing arm 402 via a pin. The swing arm 402 is connected to the fabric guide 1. With this configuration, when feeding the elastic band, the fabric guide 1 and the elastic band guide 2 are swung to a position away from the sewing machine needle for operation, leaving sufficient operating space for easy operation. Furthermore, a drive plate 7 is provided on one side of the guide part 102. The drive plate 7 is positioned opposite the feed end 1011. By setting the drive plate 7, manual operation is facilitated, and it also serves to limit the feeding of the fabric.

[0036] Going further, such as Figure 2 As shown, the connecting assembly 4 also includes an adjusting plate 404, on which an adjusting hole 403 is provided. An adjusting bolt is provided in the adjusting hole 403. The adjusting hole 403 is a straight slot hole. The adjusting plate 404 is connected to the swing arm 402 through the adjusting hole 403. The adjusting hole 403 facilitates the adjustment of the relative position between the fabric guide 1 and the connecting assembly 4, and can accommodate elastic bands 8 of different widths.

[0037] Because the elastic band 8 exerts a reaction force on the extension part 2022, it is easy for the extension part 2022 to become twisted and deformed, affecting the stability of the tensile force. Therefore, in this specific embodiment, as follows: Figure 1 As shown, a reinforcing rod 9 is obliquely arranged between the extension sub-part 2022 and the fabric guide 1. Specifically, both ends of the reinforcing rod 9 are welded to the corresponding components. The reinforcing rod 9 forms a triangular structure, making the extension sub-part 2022 less prone to twisting and deformation, thus making the tooling more stable.

[0038] In this specific embodiment, the guide part 102 and the feeding part 101 are bent into an integrated structure. The inner extension part 201, the first extension sub-part 2021 and the second extension sub-part 2022 are bent into an integrated structure. The clamping sleeve 303 is welded to the second extension sub-part 2022. The first limiting ring 6 and the second limiting ring 5 are welded to the second extension sub-part 2022.

[0039] The usage process of this tooling is as follows: First, pass the elastic band 8 through the clamping sleeve 303, the first limiting ring 6, and the second limiting ring 5 in sequence, and enter the inner extension part 201 via the guide slope; rotate the adjusting stud 302 to change the pressure of the pressure plate 301 on the elastic band 8, and start the sewing machine. The feed dog pulls the elastic band 8 and checks the degree of stretching of the elastic band 8. If it is not in accordance with the requirements, make adjustments; after the adjustment is completed, put the fabric in from the feed end 1011 of the feed part 101 and wrap it around the guide part 102 to partially surround the inner extension part 201. In this way, the fabric surrounds the elastic band 8; operate the sewing machine to sew.

[0040] As can be seen from the above specific embodiments, this utility model has the following beneficial effects: 1. Through the cooperation of fabric guide 1, elastic band guide 2, and elastic band clamping assembly 3, the fabric is ensured to accurately wrap the elastic band 8, avoiding misalignment. At the same time, the elastic band clamping assembly 3 generates sliding friction on the elastic band 8. With the cooperation of the sewing machine feed dog, the elastic band is pulled, replacing the role of human hand, ensuring that the elastic band 8 is subjected to uniform and stable tension during the sewing process, and improving the sewing quality of the elastic band 8. 2. By setting the adjusting stud 302, the distance between the pressure plate 301 and the pressure wall 3032 can be adjusted. On the one hand, it can accommodate rubber bands 8 of different thicknesses. On the other hand, it can adjust the clamping force on the rubber band 8 according to process requirements, thereby adjusting the tension of the rubber band 8. 3. The vertically set extension sub-section 2022 allows the elastic band 8 to be fed from above the sewing machine workbench, and the form of hoisting and installing the elastic band roll ensures that the elastic band is clean; 4. The guide rings 1 and 2 prevent the elastic band 8 from deviating from the extension 202 and affecting the sewing quality; 5. By setting the swing arm 402, the fabric guide 1 and the elastic guide 2 can be swung to a position away from the sewing machine needle when installing the elastic band, leaving enough operating space to facilitate the insertion of the elastic band 8 into this fixture; 6. By setting up a drive board 7, it is easy for workers to drive this tooling to rotate; 7. The relative position of the fabric guide 1 and the connecting assembly 4 can be easily adjusted by setting the adjustment hole 403 to adapt to rubber 8 of different widths; 8. By setting the reinforcing rod 9, the deformation of the extension part 2022 under the action of the rubber band 8 is greatly avoided, which would affect the stable control of the tension of the rubber band 8.

[0041] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rubber band sewing fixture, characterized in that, include: Fabric guide (1), the fabric guide (1) includes a feeding part (101) and a guiding part (102) connected to each other. The cross-section of the feeding part (101) and the cross-section of the guiding part (102) are both horizontally arranged U-shaped structures and the openings are arranged opposite to each other. The guiding end (1012) of the feeding part (101) is connected to one end of the guiding part (102). The feeding end (1011) of the feeding part (101) is located outside the guiding part (102). The elastic band guide (2) includes an extension (202) and an inner extension (201) connected to each other. The inner extension (201) is disposed inside the guide (102), and the elastic band can pass through the inner extension (201) along the feeding direction. The extension (202) is disposed at the rear of the fabric guide (1). The elastic band clamping assembly (3) includes a clamping sleeve (303) disposed on the extension (202). The clamping sleeve (303) includes a mounting wall (3031) and a pressure wall (3032) disposed opposite to each other. A pressure plate (301) is disposed on the inner surface of the mounting wall (3031). The pressure plate (301) is made of elastic material. The elastic band can pass through the pressure plate (301) and the pressure wall (3032). Both the pressure plate (301) and the pressure wall (3032) can generate sliding friction with the elastic band. A connecting component (4) is connected to the fabric guide (1) and is used to connect to the sewing machine workbench.

2. The elastic band sewing fixture as described in claim 1, characterized in that, An adjusting stud (302) is provided through the clamping sleeve (303), and the end of the adjusting stud (302) abuts against the surface of the pressure plate (301). The pressure plate (301) can approach and move away from the pressure wall (3032).

3. The elastic band sewing fixture as described in claim 2, characterized in that, The extension (202) includes an extension sub-part one (2021) and an extension sub-part two (2022) connected to each other. The extension sub-part one (2021) is horizontally arranged and its front part is connected to the inner extension (201). The extension sub-part one (2021) is provided with a guide bevel (2023) at its rear. The extension sub-part two (2022) is vertically arranged and is connected to the side of the extension sub-part one (2021) away from the guide bevel (2023) at its rear. The clamping sleeve (303) is provided on the side of the upper end of the extension sub-part two (2022) away from the extension sub-part one (2021).

4. The elastic band sewing fixture as described in claim 3, characterized in that, The extension sub-part 2 (2022) is provided with a limiting ring 1 (6), which is located at the lower part of the clamping sleeve (303) and is located on the same side as the clamping sleeve (303).

5. The elastic band sewing fixture as described in claim 4, characterized in that, A limit ring 2 (5) is provided on the guide inclined side (2023).

6. The elastic band sewing fixture as described in claim 5, characterized in that, The first extension sub-part (2021) and the second extension sub-part (2022) are connected by a transition surface (203).

7. The elastic band sewing fixture as described in any one of claims 1-6, characterized in that, The connecting assembly (4) includes a mounting plate (401), which is rotatably connected to a swing arm (402), which is connected to the fabric guide (1).

8. The elastic band sewing fixture as described in claim 7, characterized in that, A drive plate (7) is provided on one side of the guide section (102), and the drive plate (7) is disposed opposite to the feed end (1011).

9. The elastic band sewing fixture as described in claim 8, characterized in that, The connecting component (4) further includes an adjustment plate (404), on which an adjustment hole (403) is provided. The adjustment hole (403) is a straight slot hole, and the adjustment plate (404) is connected to the swing arm (402) through the adjustment hole (403).

10. The elastic band sewing fixture as described in claim 3, characterized in that, A reinforcing rod (9) is obliquely arranged between the extension sub-part 2 (2022) and the fabric guide (1).

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