Presser foot assembly for dispensing rubber band

Abstract

The utility model relates to the technical field of sewing, and discloses a presser foot assembly for dispensing a rubber band, which comprises a needle plate and a metal presser foot, cloth is attached to the top of the needle plate, a rubber band channel for a rubber band to penetrate through is formed in the top of the metal presser foot, a rubber band groove is formed in the bottom of the metal presser foot, and the metal presser foot is arranged in the rubber band channel. The top of the rubber band is attached to the top of the inner side of the rubber band groove, a first dispensing groove is formed in the rubber band groove, and second dispensing grooves are formed in the front end and the rear end of the needle plate. According to the utility model, the rubber band penetrates through the rubber band channel of the metal presser foot and falls into the rubber band groove, during sewing, the metal presser foot descends to fix the rubber band, and the first dispensing groove and the second dispensing groove prevent adhesive adhesion, so that the rubber band is accurately fixed, the rubber band is prevented from swinging during sewing, adhesive adhesion of the presser foot and a needle plate is prevented, and the sewing quality is improved. And it is ensured that sewing stitches are neat and uniform, sewing efficiency is improved, and product quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewing technical field especially for point the pressure foot subassembly of gluey rubber band. BACKGROUND

[0002] In the sewing field, the pressure foot is one of the most critical components on the sewing machine, which is used to control the conveying rhythm and accurate position of the cloth in the sewing process. The pressure foot is installed on the head of the sewing machine, mainly used to press the cloth steadily on the needle plate during sewing operation. When the sewing machine starts, the sewing needle shuttles up and down quickly and rhythmically. The pressure foot ensures that the cloth can move forward uniformly according to the preset direction and speed, so that each needle thread can fall accurately on the predetermined position.

[0003] The existing pressure foot assembly is designed to apply a certain pressure to the cloth by the pressure foot, so that the cloth maintains a relatively stable state on the needle plate. At the same time, it cooperates with the movement of the sewing needle to realize the sewing connection of the cloth and the gluey rubber band. To some extent, it avoids the problems of wrinkles and deviation of the cloth during sewing, and ensures the basic quality of sewing. However, when the existing pressure foot sews the gluey rubber band, the glue has a certain viscosity. During the sewing process, as the gluey rubber band moves on the needle plate, the glue gradually comes into contact with the needle plate in a large area. However, the existing needle plate does not have a special design for the glue to avoid contact. This causes the glue to stick to the needle plate. Once the glue sticks to the needle plate, it will seriously hinder the normal sewing process, making the transportation of the cloth and the gluey rubber band not smooth, and the stitches will be skewed, uneven, etc. This greatly affects the quality and efficiency of sewing, increases the rate of defective products, and brings many inconveniences to production. SUMMARY

[0004] In order to make up for the above shortcomings, the utility model provides a pressure foot assembly for gluey rubber band, which aims to improve the problem that in the prior art, due to the viscosity of the glue, the glue gradually comes into contact with the needle plate in a large area during the sewing process, which causes the glue to stick to the needle plate, resulting in skewed and uneven stitches.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a pressure foot assembly for gluey rubber band, comprising a needle plate and a metal pressure foot, the top of the needle plate is attached with cloth, the top of the metal pressure foot is provided with an elastic band passage for the elastic band to pass through, the bottom of the metal pressure foot is provided with an elastic band groove, the top of the elastic band is attached to the inside top of the elastic band groove, the inside of the elastic band groove is provided with a glue groove one, the front and rear ends of the needle plate are provided with glue grooves two, the size of the elastic band passage and the elastic band groove matches the size of the elastic band.

[0006] By the above technical scheme: precise fixing of the rubber band is realized, the rubber band is prevented from swinging during sewing, the rubber band is prevented from adhering to the presser foot and the needle plate by point gluing, the sewing line is ensured to be neat and uniform, the sewing efficiency is improved, and the product quality is improved.

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

[0008] The front end of the metal presser foot is designed in an arc shape.

[0009] By the above technical scheme: the arc-shaped design of the front end of the metal presser foot can more smoothly guide the cloth and the rubber band into the sewing area when the presser foot is lowered to contact the cloth and the rubber band. Compared with a right-angle design, the arc-shaped front end reduces the obstruction to the cloth and the rubber band, avoids causing cloth wrinkles or rubber band deviation during initial sewing, ensures the stability of the initial sewing stage, and the smooth design of the needle plate and the outer four corners of the metal presser foot effectively prevents scratching of the cloth during sewing.

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

[0011] The needle plate and the outer four corners of the metal presser foot are designed in a smooth design.

[0012] By the above technical scheme: during the movement of the cloth with the needle plate and the up-and-down movement of the metal presser foot, if there are sharp corners, the cloth is easily hooked, causing damage to the cloth or uneven sewing. The smooth design eliminates this hidden danger, ensures that the cloth can move smoothly on the needle plate, and cooperates with the metal presser foot to complete sewing, finally realizing high-quality sewing of the leg opening of the trousers and the anti-slip point-gluing rubber band.

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

[0014] The width of the rubber band channel and the rubber band groove is set to 15-17mm.

[0015] By the above technical scheme: the width of the rubber band channel and the rubber band groove is set to 15-17mm, which matches the common width of the rubber band.

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

[0017] The height of the rubber band groove is set to 0.5-1.5mm, and the height of the rubber band channel is set to 1.5-2.5mm.

[0018] By the above technical scheme: the height of the rubber band groove is set to 0.5-1.5mm, which can make the rubber band stably adhere to the bottom of the groove. The height of the rubber band channel is set to 1.5-2.5mm, which ensures that the rubber band will not be blocked due to too small space, and will not shake in the channel due to too high height, affecting the positioning accuracy.

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

[0020] The length of the rubber band groove and the length of the first glue dispensing groove are both set to 35-40mm.

[0021] Through the above technical solutions: the length of the rubber band groove and the length of the first glue dispensing groove are both set to 35-40mm, which can continuously and stably fix the rubber band in a longer sewing stroke.

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

[0023] The width of the first glue dispensing groove and the width of the two second glue dispensing grooves are both set to 7-10mm.

[0024] Through the above technical solutions: the width of the first glue dispensing groove and the width of the two second glue dispensing grooves are both set to 7-10mm, which is suitable for the glue dispensing width on the rubber band, effectively avoids the glue dispensing adhering to the metal presser foot and the needle plate, and ensures smooth sewing.

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

[0026] The length of the second glue dispensing groove located at the front end of the needle plate is 4-6mm, and the length of the second glue dispensing groove located at the rear end of the needle plate is 7-9mm.

[0027] Through the above technical solutions: the movement direction and speed of the cloth during sewing are adapted, the front end is shorter and does not affect the smooth entry of the cloth in the initial stage, and the rear end is longer and can better prevent the glue dispensing from adhering to the needle plate in the later stage of sewing.

[0028] The utility model has the following beneficial effects:

[0029] 1、In the utility model, the rubber band is passed through the rubber band channel of the metal presser foot and falls into the rubber band groove, during sewing, the metal presser foot is lowered to fix the rubber band, the first glue dispensing groove and the second glue dispensing groove prevent glue dispensing from adhering, precise fixing of the rubber band is realized, swinging of the rubber band during sewing is avoided, glue dispensing adhering to the presser foot and the needle plate is prevented, the sewing line is ensured to be neat and uniform, the sewing efficiency is improved, and the product quality is improved. DRAWINGS

[0030] Figure 1 It is a perspective view of the presser foot assembly for glue dispensing rubber band provided by the utility model;

[0031] Figure 2 It is a structural schematic view of the metal presser foot in the presser foot assembly for glue dispensing rubber band provided by the utility model;

[0032] Figure 3 It is a bottom view of the metal presser foot in the presser foot assembly for glue dispensing rubber band provided by the utility model;

[0033] Figure 4The structure disassembly view of the fixing nail in the presser foot assembly for dispensing rubber band is provided by the utility model.

[0034] Figure 5 The front view of the needle plate in the presser foot assembly for dispensing rubber band is provided by the utility model.

[0035] Legend:

[0036] 1, needle plate; 2, metal presser foot; 3, cloth; 4, rubber band; 5, rubber band channel; 6, rubber band groove; 7, dispensing groove one; 8, dispensing groove two; 9, conical groove; 10, fixing nail. Specific implementation

[0037] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0038] Reference Figures 1-4 An embodiment provided by the utility model: a presser foot assembly for dispensing rubber band, comprising needle plate 1, metal presser foot 2, the top of needle plate 1 is attached with cloth 3, the top of metal presser foot 2 is provided with rubber band channel 5 for rubber band 4 to pass through, the bottom of metal presser foot 2 is provided with rubber band groove 6, the top of rubber band 4 is attached to the inside top of rubber band groove 6, the inside of rubber band groove 6 is provided with dispensing groove one 7, the front and rear ends of needle plate 1 are provided with dispensing groove two 8, the size of rubber band channel 5 and rubber band groove 6 is matched with the size of rubber band 4;

[0039] Specifically, in the process of sewing the crotch of the trousers with the anti-skid rubber band 4, the operator first places the fabric 3 to be processed flat on the top of the needle plate 1, and then passes the rubber band 4 through the rubber channel 5 on the top of the metal presser foot 2. Since the size of the rubber channel 5 matches that of the rubber band 4, the position of the rubber band 4 is preliminarily limited during this operation, effectively preventing it from shaking excessively before entering the sewing area. When the sewing process starts, the metal presser foot 2 will descend, causing the top of the rubber band 4 to tightly fit the inside top of the rubber groove 6. The width and depth of the rubber groove 6 are carefully designed to match the rubber band 4 precisely, providing stable support and constraint for the rubber band 4 from the side and bottom, further fixing the rubber band 4. In this way, the rubber band 4 will not swing left and right, ensuring that the sewing line is neat and beautiful. During the sewing process, since the glue groove one 7 is located inside the rubber groove 6, its size matches the glue width on the rubber band 4. When the needle of the sewing machine moves up and down for sewing, the glue groove one 7 can effectively prevent the glue on the rubber band 4 from sticking to the bottom of the metal presser foot 2, allowing the metal presser foot 2 to move smoothly on the fabric 3 without hindering the sewing process, effectively ensuring the continuity of the sewing work. The glue groove two 8 at the front and back ends of the needle plate 1 matches the glue width on the rubber band 4. During the sewing process, as the fabric 3 moves forward on the needle plate 1, the glue groove two 8 prevents the glue from sticking to the needle plate 1, providing reliable protection for the smooth advancement of the fabric 3, avoiding the obstruction of the fabric 3 movement caused by the glue sticking to the needle plate 1, and ensuring that the sewing line is uniform and not skewed. During the entire sewing process, the metal presser foot 2 effectively fixes the rubber band 4 through the rubber channel 5 and the rubber groove 6, and the glue groove one 7 and the glue groove two 8 solve the problem of glue sticking, ultimately achieving high-quality sewing of the crotch of the trousers with the anti-skid rubber band 4. This not only effectively improves production efficiency, but also enhances product quality.

[0040] Referring to Figure 2 and Figure 4 , the front end of the metal presser foot 2 is designed in an arc shape; the needle plate 1 and the metal presser foot 2 are designed smoothly around the outside;

[0041] Specifically, when sewing the elastic rubber band 4 with anti-skid glue on the crotch, the arc-shaped design of the front end of the metal presser foot 2 can more smoothly guide the fabric 3 and the elastic rubber band 4 into the sewing area when the presser foot is lowered to contact the fabric 3 and the elastic rubber band 4. Compared with the right-angle design, the arc-shaped front end reduces the obstruction to the fabric 3 and the elastic rubber band 4, avoids causing the fabric 3 to wrinkle or the elastic rubber band 4 to deviate during the initial sewing, ensures the stability of the initial stage of sewing, and the smooth design of the outer four corners of the needle plate 1 and the metal presser foot 2 effectively prevents scratching the fabric 3 during sewing. During the movement of the fabric 3 with the needle plate 1 and the up-and-down movement of the metal presser foot 2, if there are sharp corners, the fabric 3 is easily hooked, causing the fabric 3 to be damaged or the sewing to be not smooth. The smooth design eliminates this hidden danger, ensures that the fabric 3 can move smoothly on the needle plate 1, and cooperates with the metal presser foot 2 to complete the sewing, finally realizing high-quality sewing of the crotch and the anti-skid glue elastic rubber band 4.

[0042] With reference to Figures 2-5 The width of the elastic rubber channel 5 and the width of the elastic rubber groove 6 are both set to 15-17 mm; the height of the elastic rubber groove 6 is set to 0.5-1.5 mm, and the height of the elastic rubber channel 5 is set to 1.5-2.5 mm; the length of the elastic rubber groove 6 and the length of the glue groove one 7 are both set to 35-40 mm; the width of the glue groove one 7 and the width of the two glue grooves two 8 are both set to 7-10 mm; the length of the glue groove two 8 located at the front end of the needle plate 1 is 4-6 mm, and the length of the glue groove two 8 located at the back end of the needle plate 1 is 7-9 mm;

[0043] Specifically, the width of the rubber band channel 5 and the rubber band groove 6 is set to 15-17 mm, which matches the width of the common rubber band 4. Before sewing, the rubber band 4 passes through the rubber band channel 5 with appropriate width, is preliminarily positioned, and is reduced in shaking. In the sewing stage, the rubber band 4 falls into the rubber band groove 6. The appropriate width can not only effectively constrain the rubber band 4 from left and right deviation, but also ensure that the rubber band 4 has enough space in the groove and will not be tight and deformed due to the narrow width, which affects the sewing and the elasticity of the final product. The height of the rubber band groove 6 is set to 0.5-1.5 mm, which can make the rubber band 4 stably adhere to the bottom of the groove and maintain a suitable relative position with the cloth 3, avoiding the rubber band 4 from being too high to adhere to the cloth 3 tightly, which affects the sewing effect. The height of the rubber band channel 5 is 1.5-2.5 mm, which ensures that the rubber band 4 will not be blocked due to the small space when passing through the channel, and will not shake in the channel due to the high height, which affects the positioning accuracy. The length of the rubber band groove 6 and the glue injection groove one 7 is set to 35-40 mm, which can continuously and stably fix the rubber band 4 in a long sewing stroke, and at the same time, the width of the glue injection groove one 7 and the two glue injection groove two 8 is 7-10 mm, which matches the glue injection width on the rubber band 4, effectively avoids the glue injection from adhering to the metal presser foot 2 and the needle plate 1, and ensures smooth sewing. The length of the glue injection groove two 8 at the front end of the needle plate 1 is 4-6 mm, and the length of the glue injection groove two 8 at the rear end is 7-9 mm, which is adapted to the movement direction and speed of the cloth 3 during sewing. The front end is shorter and will not affect the smooth entry of the cloth 3 in the initial stage; the rear end is longer and can better prevent the glue injection from sticking to the needle plate 1 in the later stage of sewing.

[0044] Working principle: when sewing the crotch of trousers with anti-skid rubber band 4, first, the fabric to be processed 3 is placed flat on the top of the needle plate 1, and then the rubber band 4 is threaded through the rubber channel 5 on the top of the metal presser foot 2, because the size of the rubber channel 5 matches the rubber band 4, which can preliminarily limit the position of the rubber band 4, preventing it from shaking excessively before entering the sewing area, the sewing starts, the metal presser foot 2 is lowered, the top of the rubber band 4 is tightly attached to the inside top of the rubber groove 6, the width and depth of the rubber groove 6 are accurately matched with the rubber band 4, further fixing the rubber band 4 from the side and bottom, effectively avoiding its left and right swing during sewing, ensuring that the sewing line is neat and beautiful, at this time, the glue groove one 7 is located inside the rubber groove 6, and its size is matched with the glue width on the rubber band 4, when the needle of the sewing machine moves up and down for sewing, the glue groove one 7 can effectively prevent the glue on the rubber band 4 from sticking to the bottom of the metal presser foot 2, ensuring that the metal presser foot 2 can smoothly move on the fabric 3, and will not hinder the sewing process due to the adhesion of the glue, ensuring the continuity of the sewing, the glue groove two 8 opened at the front and back ends of the needle plate 1 is also matched with the glue width on the rubber band 4, during the sewing process, as the fabric 3 moves forward on the needle plate 1, the glue groove two 8 can prevent the glue from sticking to the needle plate 1, providing protection for the smooth advancement of the fabric 3, avoiding the movement of the fabric 3 being blocked due to the adhesion of the glue to the needle plate 1, and thus ensuring that the sewing line is uniform and will not be skewed, during the entire sewing process, the metal presser foot 2 fixes the rubber band 4 through the rubber channel 5 and the rubber groove 6, the glue groove one 7 and the glue groove two 8 solve the problem of glue adhesion respectively, realizing high-quality sewing of the crotch of trousers and the anti-skid rubber band 4, effectively improving the production efficiency and product quality.

[0045] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not intended to limit the present application, although the present application 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 replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A presser foot assembly for dispensing rubber band, comprising a needle plate (1), a metal presser foot (2), characterized in that: The top of the needle plate (1) is attached with cloth (3), the top of the metal presser foot (2) is provided with an elastic band channel (5) for the elastic band (4) to pass through, the bottom of the metal presser foot (2) is provided with an elastic band groove (6), the top of the elastic band (4) is attached to the inner top of the elastic band groove (6), the inside of the elastic band groove (6) is provided with a glue dispensing groove one (7), the front and rear ends of the needle plate (1) are provided with glue dispensing groove two (8), the size of the elastic band channel (5) and the elastic band groove (6) are matched with the size of the elastic band (4).

2. The presser foot assembly for dispensing an elastic band according to claim 1, wherein: The front end of the metal presser foot (2) is designed in an arc shape.

3. The presser foot assembly for dispensing an elastic thread according to claim 1, wherein: The outer four sides of the needle plate (1) and the metal presser foot (2) are designed in a smooth shape.

4. The presser foot assembly for dispensing an elastic band according to claim 1, wherein: The width of the elastic band channel (5) and the elastic band groove (6) is set to 15-17mm.

5. The foot assembly for dispensing an elastomeric band according to claim 1, wherein: The height of the elastic band groove (6) is set to 0.5-1.5mm, and the height of the elastic band channel (5) is set to 1.5-2.5mm.

6. The foot assembly for dispensing an elastomeric band according to claim 1, wherein: The length of the elastic band groove (6) and the glue dispensing groove one (7) is set to 35-40mm.

7. The foot assembly for dispensing an elastomeric band according to claim 1, wherein: The width of the glue dispensing groove one (7) and the two glue dispensing groove two (8) is set to 7-10mm.

8. The foot assembly for dispensing an elastomeric band according to claim 1, wherein: The length of the glue dispensing groove two (8) at the front end of the needle plate (1) is 4-6mm, and the length of the glue dispensing groove two (8) at the rear end of the needle plate (1) is 7-9mm.

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