Auxiliary sewing device for pull binding tape

Abstract

The utility model relates to the technical field of pull binding tape sewing, and discloses a pull binding tape auxiliary sewing device which comprises a needle plate, a presser foot and a needle threading die which are matched with each other, a plurality of groups of teeth are arranged at the top of the needle threading die, a group of teeth in the middle are ground to be flat and form a clamping groove matched with the thickness of a binding tape, the needle plate is provided with a binding tape groove, and the needle plate is provided with a clamping groove matched with the thickness of the binding tape. A left gauge plate and a right gauge plate which are used for limiting movement of the binding tape are arranged on the two sides of the binding tape groove respectively, and the needle plate is further provided with an upper tooth groove and a lower tooth groove which are used for the teeth to penetrate through. According to the utility model, the binding tape is positioned by the binding tape groove on the needle plate, the left and right gauge plates and the clamping groove on the needle plate die, the upper tooth groove and the lower tooth groove guide the trend of cloth and the binding tape, and the clamping groove enables the raised teeth on the needle plate to be rubbed down, so that the thickness of the binding tape can be matched during sewing, and the sewing is not blocked by the raised teeth to cause left-right swing; the left and right positions avoid the displacement of the binding tape in the sewing process, so that the binding tape can be accurately sewn.

Description

Technical Field

[0001] This utility model relates to the field of sewing technology for tie-down strips, and in particular to a tie-down strip auxiliary sewing device. Background Technology

[0002] In the garment manufacturing industry, the binding strip process is a key step in the edge-binding treatment of clothing. By using binding strips of a specific width to wrap the raw edges of clothing, not only can the garment be prevented from fraying, but it can also make the garment more beautiful and delicate, and enhance its durability. The binding strip auxiliary sewing device is an important tool for realizing this process.

[0003] Existing binding strip-assisted sewing devices, through a specific presser foot component structure, can ensure the continuity of the sewing process to a certain extent, avoiding common problems such as jamming and thread breakage during sewing, thus achieving a relatively stable sewing effect. However, the existing presser foot and needle plate structure is not reasonably designed and cannot be adjusted according to different binding strip thicknesses and sewing widths. This results in the presser foot and binding strip not fitting together properly, and the protruding teeth on the needle plate act as obstacles, causing the binding strip to swing left and right during sewing, which in turn causes the stitching to deviate, resulting in unsightly stitches, reduced product quality, and increased defect rate. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a binding strip auxiliary sewing device, which aims to improve the problem that the binding strip in the prior art is prone to swinging left and right during the sewing process, resulting in the deviation of the stitch and unsightly stitches.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a binding strip auxiliary sewing device, comprising a matching needle plate, presser foot, and needle plate teeth. The top of the needle plate teeth is provided with several sets of teeth, and the middle set of teeth is ground flat to form a groove that matches the thickness of the binding strip. The needle plate is provided with a binding strip groove, and a left and right side plate for restricting the movement of the binding strip are respectively provided on both sides of the binding strip groove. The needle plate is also provided with an upper and lower tooth groove for the teeth to pass through. An auxiliary side plate mechanism is provided at the front end of the presser foot.

[0006] The above technical solution, through the positioning of the binding strip by the left and right side plates on the needle plate, the guidance of the fabric and binding strip by the upper and lower tooth grooves, and the locking groove to ensure accurate movement, enables the presser foot to match the thickness of the binding strip during sewing, thus ensuring accurate sewing. This greatly improves the efficiency and quality of the binding strip pulling process and meets the high-quality requirements of garment production.

[0007] As a further description of the above technical solution:

[0008] The auxiliary positioning mechanism includes a bent iron block, which is slidably connected to the presser foot, and a metal sheet for positioning is fixedly connected to the front end of the bent iron block.

[0009] The above technical solution achieves precise control of the binding strip position during sewing by adjusting the position of the bent iron block at the front end of the presser foot by tightening the fastening bolts, thereby moving the iron sheet. This adapts to different sewing width requirements, avoids thread deviation and unsightly stitches, greatly improves sewing quality and efficiency, ensures the craftsmanship of garment production, and makes the edges of clothing more beautiful and secure.

[0010] As a further description of the above technical solution:

[0011] The iron sheet is welded to the front end of the bent iron block.

[0012] The above technical solution enables the bent iron block to have sufficient strength to support the iron sheet in the auxiliary support mechanism.

[0013] As a further description of the above technical solution:

[0014] The top of the bent iron block has an adjustment groove for the fastening bolt to move, and the pressure foot has a corresponding fastening groove. The fastening bolt passes through the adjustment groove and the fastening groove in sequence to connect the bent iron block and the pressure foot.

[0015] The above technical solution connects the bent iron block and the presser foot via fastening bolts, adjusting grooves, and tightening grooves. When the operator loosens the bolts, they can move within the adjusting grooves to change the position of the bent iron block relative to the presser foot, thereby flexibly adjusting the seam width to meet different seam requirements. After adjustment, tightening the fastening bolts ensures a stable connection between the two, guaranteeing a stable seam process.

[0016] As a further description of the above technical solution:

[0017] The thickness of the bent iron block is set to 1-2mm, the length to 5-7mm, and the height to 3-5mm. Preferably, the thickness is set to 1.5mm, the length to 6mm, and the height to 4mm. The length of the iron sheet is set to 15-20mm, and the thickness to 0.3-0.5mm. Preferably, the length is set to 17mm and the thickness to 0.4mm.

[0018] The above technical solution uses a bent iron block with a thickness of 1-2mm, a length of 5-7mm, and a height of 3-5mm. The preferred dimensions are 1.5mm thick, 6mm long, and 4mm high. This makes the iron block lightweight yet strong, facilitating its sliding connection with the presser foot and enabling flexible adjustment. Its dimensions ensure convenient operation when adjusting the seam width and maintain structural stability during the sewing process, thus guaranteeing the normal operation of the auxiliary positioning mechanism.

[0019] As a further description of the above technical solution:

[0020] The length of the adjustment groove is set to 10-15mm and the width is set to 2-4mm. Preferably, the length is set to 13mm and the width is set to 3mm.

[0021] The above technical solution involves adjusting the groove length to 10-15mm and the width to 2-4mm, preferably 13mm and 3mm. This size allows the fastening bolt to move smoothly within the groove, providing sufficient adjustment space for operators to accurately adjust the seam width. The appropriate groove width and length ensure the flexibility and stability of the adjustment operation, thus improving the practicality of the device.

[0022] As a further description of the above technical solution:

[0023] The thickness of the top of the needle plate is set to 0.4-0.6 mm, preferably 0.5 mm. The length of the tooth is set to 25-30 mm, and the height is set to 2-4 mm, preferably 28 mm and 3 mm.

[0024] The above technical solution ensures that the needle teeth have sufficient strength to contact and push the fabric, while the tooth size ensures good friction with the fabric, pushing the fabric and binding strip forward smoothly, ensuring stable sewing power, and guaranteeing the continuity and stability of the sewing.

[0025] As a further description of the above technical solution:

[0026] The width of the upper alveolar ridge is set to 4-6 mm, preferably 5 mm, and the width of the lower alveolar ridge is set to 1-3 mm, preferably 2 mm.

[0027] The above technical solution involves an upper tooth groove width of 4-6mm, preferably 5mm, and a lower tooth groove width of 1-3mm, preferably 2mm. The wider upper tooth groove facilitates the guidance of the fabric direction, while the narrower lower tooth groove is suitable for the structure of the needle plate teeth. Both provide passage space for the needle plate teeth and accurately guide the direction of the fabric and binding strips, ensuring accurate sewing path and improving sewing quality.

[0028] As a further description of the above technical solution:

[0029] The width of the binding groove is set to 8-10mm, and the height is set to 1.5-2.5mm. Preferably, the width is set to 9mm and the height is set to 2mm. The length of the card slot is set to 26-30mm, and the height is set to 2.5-3.5mm. Preferably, the length is set to 28mm and the height is set to 3mm.

[0030] The above technical solution provides a precise placement space for the binding strips, ensuring their stability. The binding groove is 8-10mm wide and 1.5-2.5mm high, preferably 9mm wide and 2mm high. The card slot is 26-30mm long and 2.5-3.5mm high, preferably 28mm long and 3mm high. It is connected to the sewing machine transmission components to ensure that the needle plate moves according to the set rhythm and to ensure stable sewing.

[0031] As a further description of the above technical solution:

[0032] The length of the left lateral plate is set to 21-25mm, preferably 23mm, and the length of the right lateral plate is set to 25-27mm, preferably 26mm. The thickness of both the left and right lateral plates is set to 0.1-0.3mm, preferably 0.2mm.

[0033] The above technical solution involves a left lateral positioning plate with a length of 21-25mm, preferably 23mm, and a right lateral positioning plate with a length of 25-27mm, preferably 26mm. Both plates have a thickness of 0.1-0.3mm, preferably 0.2mm. The length is sufficient to cover both sides of the binding strip for positioning. The appropriate thickness ensures positioning strength without affecting the movement of the fabric and binding strip. In conjunction with the auxiliary lateral positioning mechanism, it prevents the binding strip from shifting and improves the sewing quality.

[0034] This utility model has the following beneficial effects:

[0035] 1. In this utility model, the binding strip is positioned by the binding strip groove on the needle plate, the left and right side plates, and the slots on the needle plate teeth. The upper and lower tooth grooves guide the direction of the fabric and binding strip. The slots flatten the protruding teeth on the needle plate, so that the thickness of the binding strip can be matched during sewing. The sewing is not hindered by the protruding teeth, which causes left and right swinging. The left and right side plates prevent the binding strip from shifting during the sewing process, so that it can be sewn accurately.

[0036] 2. In this utility model, by setting an auxiliary positioning mechanism at the front end of the presser foot, and by having the operator tighten the fastening bolts to adjust the position of the bent iron block at the front end of the presser foot, the iron sheet is moved. This achieves precise control of the position of the binding strip when sewing, adapts to different sewing width requirements, avoids thread deviation and unsightly stitches, greatly improves sewing quality and efficiency, and makes the edges of clothing more beautiful and secure. Attached Figure Description

[0037] Figure 1 This is a perspective view of a binding strip auxiliary sewing device proposed in this utility model;

[0038] Figure 2 This is a schematic diagram of the needle plate in a binding strip auxiliary sewing device proposed in this utility model;

[0039] Figure 3 This is a schematic diagram of the needle plate in a sewing device for assisting with binding strips proposed in this utility model;

[0040] Figure 4 This is a structural exploded view of the auxiliary positioning mechanism in the tie-bar auxiliary sewing device proposed in this utility model;

[0041] Figure 5 This is a top view of the needle plate in a sewing device for assisting with binding strips, as proposed in this utility model.

[0042] Legend:

[0043] 1. Needle plate; 2. Auxiliary positioning mechanism; 201. Bending iron block; 202. Iron sheet; 203. Adjustment groove; 204. Fastening groove; 3. Presser foot; 4. Needle plate tooth; 5. Tooth; 6. Slot; 7. Binding strip groove; 8. Upper tooth groove; 9. Lower tooth groove; 10. Left adjacent positioning plate; 11. Right adjacent positioning plate. Detailed Implementation

[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0045] Reference Figures 1-4The present invention provides an embodiment of a binding strip auxiliary sewing device, comprising a matching needle plate 1, a presser foot 3, and a needle plate tooth 4. The top of the needle plate tooth 4 is provided with several sets of teeth 5, and the middle set of teeth 5 is ground flat to form a groove 6 that matches the thickness of the binding strip. The needle plate 1 is provided with a binding strip groove 7, and the two sides of the binding strip groove 7 are respectively provided with a left side plate 10 and a right side plate 11 for restricting the movement of the binding strip. The needle plate 1 is also provided with an upper tooth groove 8 and a lower tooth groove 9 for the teeth 5 to pass through. The front end of the presser foot 3 is provided with an auxiliary side mechanism 2.

[0046] Specifically, in the field of garment manufacturing, the binding strip auxiliary sewing device of this utility model greatly improves the efficiency and quality of sewing. When preparing for sewing, the binding strip is first placed on the needle plate 1. The binding strip groove 7 on the needle plate 1 provides a precise placement position for the binding strip. The left and right side plates 10 and 11 on both sides of the binding strip groove 7 can effectively limit the movement of the binding strip during the sewing process, ensuring that the binding strip is always in the correct position and avoiding sewing quality problems caused by the displacement of the binding strip. The needle plate 1 is also provided with upper tooth grooves 8 and lower tooth grooves 9. During the sewing process, the upper tooth grooves 8 and lower tooth grooves 9 not only provide space for the teeth 5 at the top of the needle plate teeth 4 to pass through, but also guide the direction of the fabric and binding strip. When sewing begins, the needle plate teeth 4 are activated, and the teeth 5 at the top of the needle plate teeth 4 are in close contact with the fabric. It should be noted that the set of teeth at the top of the needle plate teeth 4 is located in the middle. 5 is ground flat and forms a groove 6 that matches the thickness of the binding strip, allowing the needle plate 4 to better cooperate with the binding strip when pushing the fabric forward. The principle of the needle plate 4 pushing the fabric is similar to that of a regular sewing machine. The needle plate 4 provides power for the forward movement of the fabric and binding strip through the continuous movement of the teeth 5. The groove 6 inside is connected to the transmission components of the sewing machine, thereby ensuring that the needle plate 4 can move accurately according to the set rhythm and method, ensuring the continuity and stability of the sewing process. During the sewing process, the presser foot 3 applies stable pressure to the fabric and binding strip, keeping them flat during the sewing process. The presser foot 3 works in conjunction with the left and right side plates 10 and 11 on the needle plate 1 and the needle plate 4 to make the edge binding of the garment more beautiful and firm, effectively avoiding the problems of stitch deviation and binding strip swing, and significantly improving the efficiency and quality of garment production.

[0047] Reference Figure 1 and Figure 4 The auxiliary positioning mechanism 2 includes a bent iron block 201, which is slidably connected to the pressure foot 3. The front end of the bent iron block 201 is fixedly connected to an iron sheet 202 for positioning. The iron sheet 202 is welded to the front end of the bent iron block 201. The top of the bent iron block 201 is provided with an adjustment groove 203 for the movement of the fastening bolt. The pressure foot 3 is provided with a corresponding fastening groove 204. The fastening bolt passes through the adjustment groove 203 and the fastening groove 204 in sequence to connect the bent iron block 201 and the pressure foot 3.

[0048] Specifically, in the auxiliary sewing device for the binding strip, the auxiliary positioning mechanism 2 and the presser foot 3 work closely together to further improve the accuracy and stability of the sewing. The bent iron block 201 and the presser foot 3 are connected by a sliding connection, giving the auxiliary positioning mechanism 2 an adjustable characteristic. When it is necessary to adjust the sewing width according to different sewing requirements, this can be achieved by adjusting the fastening bolt. The top of the bent iron block 201 has an adjustment groove 203 for the fastening bolt to move, while the presser foot 3 has a corresponding fastening groove 204. Simply loosen the fastening bolt and let it move within the adjustment groove 203 to change the position of the bent iron block 201 relative to the presser foot 3, thereby adjusting the sewing width. After adjustment, tighten the fastening bolt by passing it through the adjustment groove 203 and the fastening groove 204 in sequence, so that the bent iron block 201 and the presser foot 3 are firmly connected. Next, during the sewing process, the iron plate 202 is welded to the front end of the bent iron block 201 to position the binding strip. When the fabric and binding strip are pushed forward on the needle plate 1 by the needle teeth 4, the presser foot 3 applies stable pressure to ensure flatness. At this time, the iron plate 202 of the auxiliary positioning mechanism 2 will be close to the binding strip. Since the iron plate 202 is fixed to the front end of the bent iron block 201 and the bent iron block 201 is stably connected to the presser foot 3, the iron plate 202 can provide a stable positioning effect for the binding strip, effectively preventing the binding strip from swinging left and right during the sewing process. This precise positioning function, together with the positioning function of the left positioning plate 10 and the right positioning plate 11 on the needle plate 1, improves the sewing quality, makes the edge binding of the garment more beautiful and firm, effectively avoids the problem of stitch deviation, and significantly improves the efficiency and quality of garment production.

[0049] Reference Figure 1 and Figure 4 The thickness of the bent iron block 201 is set to 1-2mm, the length to 5-7mm, and the height to 3-5mm. Preferably, the thickness is set to 1.5mm, the length to 6mm, and the height to 4mm. The length of the iron sheet 202 is set to 15-20mm, and the thickness to 0.3-0.5mm. Preferably, the length is set to 17mm and the thickness to 0.4mm. The length of the adjusting groove 203 is set to 10-15mm, and the width to 2-4mm. Preferably, the length is set to 13mm and the width to 3mm.

[0050] Specifically, the bent iron block 201 has a thickness of 1-2mm, a length of 5-7mm, and a height of 3-5mm. The preferred dimensions are a thickness of 1.5mm, a length of 6mm, and a height of 4mm, making it lightweight yet strong enough to facilitate sliding connection with the presser foot 3 and allow for flexible adjustment. The adjustment groove 203 on its top is 10-15mm long and 2-4mm wide, preferably 13mm long and 3mm wide. This size allows the fastening bolt to move smoothly within the groove, enabling the operator to easily loosen the bolt and flexibly change the position of the bent iron block 201 relative to the presser foot 3 according to different sewing requirements. This allows for precise adjustment of the sewing width. After adjustment, the fastening bolt is tightened to achieve a stable connection. The iron sheet 202 is long... The length is set at 15-20mm, and the thickness is 0.3-0.5mm, with a preferred length of 17mm and a thickness of 0.4mm. This length ensures that the metal plate 202 can effectively approach and align with the binding strip during sewing. The thinner thickness ensures its aligning effect with the binding strip without causing too much obstruction to the movement of the fabric and binding strip. When the needle plate 4 pushes the fabric and binding strip forward on the needle plate 1, and the presser foot 3 applies stable pressure to flatten the fabric, the metal plate 202 welded to the front end of the bent metal block 201, with its appropriate size and stable connection, can effectively prevent the binding strip from swinging left and right. In conjunction with the left aligning plate 10 and the right aligning plate 11 on the needle plate 1, it greatly improves the sewing quality, makes the garment edge more beautiful and firm, and reduces stitch deviation.

[0051] Reference Figures 2-5 The thickness of the top of the needle plate 4 is set to 0.4-0.6 mm, preferably 0.5 mm; the length of the tooth 5 is set to 25-30 mm, and the height is set to 2-4 mm, preferably 28 mm and 3 mm; the width of the upper tooth groove 8 is set to 4-6 mm, preferably 5 mm; the width of the lower tooth groove 9 is set to 1-3 mm, preferably 2 mm; the width of the binding groove 7 is set to 8-10 mm, and the height is set to 1.5-2.5 mm, preferably 9 mm. The height is set to 2mm, the length of the card slot 6 is set to 26-30mm, and the height is set to 2.5-3.5mm. Preferably, the length is set to 28mm and the height is set to 3mm. The length of the left side plate 10 is set to 21-25mm, preferably 23mm. The length of the right side plate 11 is set to 25-27mm, preferably 26mm. The thickness of both the left side plate 10 and the right side plate 11 is set to 0.1-0.3mm. Preferably, the thickness of both the left side plate 10 and the right side plate 11 is set to 0.2mm.

[0052] Specifically, the thickness of the top of the needle plate tooth 4 is set at 0.4-0.6mm, preferably 0.5mm. This thickness ensures both strength and flexibility in contact with the fabric. The length of the top tooth 5 is 25-30mm, preferably 28mm, and the height is 2-4mm, preferably 3mm. This size ensures that the tooth 5 has sufficient friction and pushing force when pushing the fabric and binding strips, ensuring smooth forward movement. The width of the upper tooth groove 8 on the needle plate 1 is 4-6mm, preferably 5mm, and the width of the lower tooth groove 9 is 1-3mm. The preferred width is 2mm, which not only provides space for the teeth 5 of the needle plate 4, but also precisely guides the fabric and binding strip direction. The upper tooth groove 8 is wider to facilitate fabric guidance, while the lower tooth groove 9 is narrower to accommodate part of the structure of the needle plate 4, making the sewing path more precise. The binding strip groove 7 is 8-10mm wide, preferably 9mm, and 1.5-2.5mm high, preferably 2mm, providing just the right placement space for the binding strip and ensuring its stability. The left side plate 10 located on both sides of the binding strip groove 7 is 21-25mm long, preferably 23mm. The right auxiliary plate 11 is 25-27mm long, preferably 26mm, and both are 0.1-0.3mm thick, preferably 0.2mm. The left auxiliary plate 10 and the right auxiliary plate 11 play a key positioning role for the binding strip. Their length can cover both sides of the binding strip, and the appropriate thickness ensures positioning strength without affecting the movement of the fabric and binding strip. During sewing, the needle plate 4 contacts the fabric through the teeth 5, pushing the fabric and binding strip forward. At this time, the presser foot 3 applies stable pressure to the fabric and binding strip to ensure flatness. The iron plate 202 in the auxiliary positioning mechanism 2 is welded to the front end of the bent iron block 201 to position the binding strip. The bent iron block 201 is slidably connected to the presser foot 3. The operator can adjust the position of the bolt by adjusting the fastening bolt and using the adjusting groove 203 and fastening groove 204, thereby adjusting the sewing width. The groove 6 inside the needle tooth 4 is 26-30mm long, preferably 28mm, and 2.5-3.5mm high, preferably 3mm. It is connected to the sewing machine transmission components to ensure that the needle tooth 4 moves according to the set rhythm.

[0053] Working principle: When the operator prepares to perform sewing, the binding strip is first placed on the needle plate 1. The binding strip groove 7 on the needle plate 1 provides a highly precise placement position for the binding strip. The left and right side plates 10 and 11 located on both sides of the binding strip groove 7 effectively restrict the movement of the binding strip during the sewing process, ensuring that the binding strip always remains in the correct position, thereby avoiding sewing quality problems caused by binding strip displacement. The needle plate 1 also has upper and lower tooth grooves 8 and 9. During the sewing process, these two... The toothed grooves not only provide space for the teeth 5 at the top of the needle plate 4 to pass through, but also guide the direction of the fabric and binding strip. After the sewing starts, the needle plate 4 begins to operate, and its top teeth 5 make close contact with the fabric. It is worth noting that the set of teeth 5 in the middle of the top of the needle plate 4 is ground flat, forming a groove 6 that matches the thickness of the binding strip. This allows the needle plate 4 to better cooperate with the binding strip when pushing the fabric forward, just like the principle of the needle plate 4 pushing the fabric in a normal sewing machine. The needle plate 4 provides power for the forward movement of the fabric and binding strip through the continuous movement of the teeth 5. The groove 6 inside the needle plate 4 is connected to the transmission components of the sewing machine, thereby ensuring that the needle plate 4 can move accurately according to the set rhythm and method, thus ensuring the continuity and stability of the sewing process. During sewing, the presser foot 3 applies stable pressure to the fabric and binding strip to keep them flat during the sewing process. The bent iron block 201 is slidably connected to the presser foot 3, and can be adjusted by adjusting the fastening bolts. The adjustment groove 203 on the top of 201 and the corresponding fastening groove 204 on the presser foot 3 change the position of the bent iron block 201 relative to the presser foot 3, thereby adjusting the sewing width. The iron plate 202 welded to the front end of the bent iron block 201 is close to the binding strip during sewing, so that the binding strip remains stable during sewing. This enables high-quality binding strip sewing, making the edge binding of the garment more beautiful and firm, avoiding problems such as stitch deviation and binding strip swing, and effectively improving the efficiency and quality of garment production.

[0054] Furthermore, the bent iron block 201 and the presser foot 3 are connected by a sliding connection, giving the auxiliary positioning mechanism 2 an adjustable characteristic. When facing different sewing requirements and needing to adjust the sewing width, this can be achieved by adjusting the fastening bolt. The top of the bent iron block 201 is provided with an adjustment groove 203 for the fastening bolt to move, while the presser foot 3 has a fastening groove 204 at the corresponding position. Simply loosen the fastening bolt, allowing it to move within the adjustment groove 203, and the position of the bent iron block 201 relative to the presser foot 3 can be easily changed, thereby precisely adjusting the sewing width. After adjustment, tighten the fastening bolt, passing it sequentially through the adjustment groove 203 and the fastening groove 204, to firmly connect the bent iron block 201 and the presser foot 3. Next, during the sewing process, the iron plate 202 is welded to the front end of the bent iron block 201 to position the binding strip. When the fabric and binding strip are pushed forward on the needle plate 1 by the needle teeth 4, the presser foot 3 applies stable pressure to ensure that the fabric and binding strip are in a flat state. At this time, the iron plate 202 of the auxiliary positioning mechanism 2 will be close to the binding strip. Since the iron plate 202 is firmly fixed to the front end of the bent iron block 201 and the bent iron block 201 is stably connected to the presser foot 3, the iron plate 202 can provide a stable positioning effect for the binding strip, effectively avoiding the problems of thread deviation and unsightly stitches caused by the unstable position of the binding strip. This greatly improves the quality and efficiency of binding strip sewing and ensures the craftsmanship level of garment production.

[0055] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sewing aid device for binding strips, comprising a matching needle plate (1), a presser foot (3), and needle plate teeth (4), characterized in that: The top of the needle plate (4) is provided with several sets of teeth (5), and the set of teeth (5) in the middle is ground flat and forms a groove (6) that matches the thickness of the binding strip. The needle plate (1) is provided with a binding strip groove (7). The binding strip groove (7) is provided with a left side plate (10) and a right side plate (11) on both sides for restricting the movement of the binding strip. The needle plate (1) is also provided with an upper tooth groove (8) and a lower tooth groove (9) for the teeth (5) to pass through. The front end of the presser foot (3) is provided with an auxiliary side mechanism (2).

2. The sewing device for assisting with binding strips according to claim 1, characterized in that: The auxiliary positioning mechanism (2) includes a bent iron block (201), which is slidably connected to the presser foot (3), and the front end of the bent iron block (201) is fixedly connected to an iron sheet (202) for positioning.

3. The sewing device for assisting with binding strips according to claim 2, characterized in that: The iron sheet (202) is welded to the front end of the bent iron block (201).

4. The sewing device for assisting with binding strips according to claim 2, characterized in that: The top of the bent iron block (201) is provided with an adjustment groove (203) for the fastening bolt to move, and the pressure foot (3) is provided with a corresponding fastening groove (204). The fastening bolt passes through the adjustment groove (203) and the fastening groove (204) in sequence to connect the bent iron block (201) and the pressure foot (3).

5. The sewing device for assisting with binding strips according to claim 2, characterized in that: The thickness of the bent iron block (201) is set to 1-2mm, the length is set to 5-7mm, and the height is set to 3-5mm. The length of the iron sheet (202) is set to 15-20mm, and the thickness is set to 0.3-0.5mm.

6. The sewing device for assisting with binding strips according to claim 4, characterized in that: The length of the adjustment groove (203) is set to 10-15mm and the width is set to 2-4mm.

7. The sewing device for assisting with binding strips according to claim 1, characterized in that: The top thickness of the needle plate (4) is set to 0.4-0.6 mm, the length of the tooth (5) is set to 25-30 mm, and the height is set to 2-4 mm.

8. The sewing device for assisting with binding strips according to claim 1, characterized in that: The width of the upper alveolar ridge (8) is set to 4-6 mm, and the width of the lower alveolar ridge (9) is set to 1-3 mm.

9. The sewing device for assisting with binding strips according to claim 1, characterized in that: The width of the binding groove (7) is set to 8-10mm and the height is set to 1.5-2.5mm. The length of the card slot (6) is set to 26-30mm and the height is set to 2.5-3.5mm.

10. A sewing device for assisting with binding strips according to claim 1, characterized in that: The length of the left lateral plate (10) is set to 21-25mm, the length of the right lateral plate (11) is set to 25-27mm, and the thickness of both the left lateral plate (10) and the right lateral plate (11) is set to 0.1-0.3mm.

Images