Double-concealed-thread sewing presser foot

Abstract

The double-concealed-thread sewing presser foot comprises a presser foot handle and a presser foot plate, a first needle falling area and a second needle falling area are arranged on the presser foot plate, a rope penetrating area is further arranged on the presser foot plate and located between the first needle falling area and the second needle falling area, and the rope penetrating area is connected with the first needle falling area and the second needle falling area to form a material wrapping penetrating hole. The inlet of the core rope is formed between the two needle falling areas, so that the core rope can be wrapped by the wrapping material in advance and double hemming is performed for sewing, the core rope is prevented from being deformed, and the sewn edge wrapping strip is rounder and has a stereoscopic impression.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewing machine technical field, especially a double dark line sewing presser foot. BACKGROUND

[0002] In prior art, a Chinese utility model patent with patent number 202321291294.9 and patent name double dark line decorative strip sewing pull cylinder presser foot is provided with a presser foot body, the decorative strip enters the feed inlet from the feed hole for feeding, and the cotton core strip is fed from the cotton core inlet, which is limited by the feed inlet and the cotton core inlet, and the decorative strip is sewn in a double hemming manner on both sides, and the double dark line sewing effect is achieved, and the decorative strip is collectively referred to as a package in the field, however, experiments show that no matter whether the core rope hole is arranged on the front side or the side of the needle hole, the core rope is flattened when pulled through the core rope hole during sewing, and the deformed core rope is easily pressed during sewing, so that the package edge strip after sewing is not smooth enough. SUMMARY

[0003] The utility model discloses a double dark line sewing presser foot, which sets the inlet of the core rope between the two needle drop areas, so that the package can wrap the core rope in advance and be sewn in a double hemming manner, thereby preventing the core rope from deforming and making the package edge strip after sewing more smooth and three-dimensional.

[0004] The utility model discloses a double dark line sewing presser foot, which sets the inlet of the core rope between the two needle drop areas, so that the package can wrap the core rope in advance and be sewn in a double hemming manner, thereby preventing the core rope from deforming and making the package edge strip after sewing more smooth and three-dimensional.

[0005] The above technical scheme connects the two needle drop areas into one through the rope passing area, so that the package can pass through and be hemmed, and the core rope of the rope passing area can be directly wrapped during hemming, thereby reducing the deformation of the core rope and making the package edge strip after sewing more three-dimensional and smooth.

[0006] The utility model discloses a double dark line sewing presser foot, which sets the inlet of the core rope between the two needle drop areas, so that the package can wrap the core rope in advance and be sewn in a double hemming manner, thereby preventing the core rope from deforming and making the package edge strip after sewing more smooth and three-dimensional.

[0007] The above technical scheme can prevent the core rope from deviating and separate the two ends of the package, thereby further improving the sewing effect.

[0008] The utility model discloses a double dark line sewing presser foot, which sets the inlet of the core rope between the two needle drop areas, so that the package can wrap the core rope in advance and be sewn in a double hemming manner, thereby preventing the core rope from deforming and making the package edge strip after sewing more smooth and three-dimensional.

[0009] The package material can be pulled, so that the package material is more stable during processing.

[0010] Further, the package material guide comprises a package material guide hole arranged on the presser bar.

[0011] The space of the presser bar can be fully utilized, and the stability is also good.

[0012] Further, the presser bar is further provided with a core rope guide.

[0013] The core rope can be pulled, so that the core rope is more stable when being wrapped by the package material.

[0014] Further, the core rope guide comprises a core rope guide hole arranged above the package material guide hole.

[0015] The space of the presser bar can be fully utilized, and the stability is also good.

[0016] Further, the presser plate is further provided with a decorative strip perforation, and the bottom of the decorative strip perforation extends to the bottom close to the package material perforation.

[0017] The decorative strip can be sewn on the bottom of the package material at the same time when the double-hidden-line package material is sewn, and the decorative strip does not need to be sewn on the fabric in advance, so that the processing flow is simplified, and the sewing is more convenient.

[0018] Further, the decorative strip perforation comprises a single-side perforation or a double-side perforation.

[0019] The single-side perforation can be used to sew a single-side decorative strip on the bottom of the package material, and the double-side perforation can be used to sew a double-side decorative strip on the bottom of the package material.

[0020] Further, the bottom of the outlet of the core rope guide is provided with an arc-shaped notch.

[0021] The core rope can be further prevented from being deformed. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a perspective view of the utility model;

[0023] Figure 2 It is another perspective view of the utility model;

[0024] Figure 3Another perspective view of the utility model;

[0025] Figure 4 The structure diagram of the perforation of the decoration strip of the utility model is formed by two long strip holes.

[0026] Figure 5 The structure diagram of the perforation of the decoration strip of the utility model is formed by two long strip holes.

[0027] Figure 6 The structure diagram of the perforation of the decoration strip of the utility model is formed by two long strip holes.

[0028] Figure 7 The structure diagram of the core rope guide of the utility model is a guide frame. Specific embodiments

[0029] The specific embodiments of the utility model are described in detail below in combination with the drawings:

[0030] In the description of the utility model, it needs to be understood that the orientation or position relationship indicated by the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right" and the like is the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model, the first needle drop area, the second needle drop area and the threading area in this paper are all through holes.

[0031] The utility model discloses a kind of double concealed thread sewing presser feet, it includes presser foot handle 1 and presser foot plate 2, first needle drop area 21 and second needle drop area 22 are equipped on the presser foot plate 2, in the utility model embodiment, through rope area 23 is further equipped between first needle drop area 21 and second needle drop area 22 on the presser foot plate 2, through rope area 23 links first needle drop area 21 and second needle drop area 22 to form package material perforation 3, two needle drop areas are integrated by linking through rope area 23, so that it can be supplied to package material and rolled edge, simultaneously, when rolled edge, the core rope of through rope area 23 can be directly wrapped, so that the package edge strip of sewing can be more three-dimensional and round.

[0032] Corresponding position of the package material perforation 3 in through rope area 23 is further provided with a limiting piece 4 (limiting piece 4 is most preferably adopted limiting strip or limiting block) for supporting the core rope, the core rope is easy to deviate when package material wraps the core rope, is supported by a limiting piece 4, can prevent core rope deviation, and can further improve the sewing effect by separating the two ends of package material.

[0033] Presser foot handle 1 is further provided with package material guide 5, which can pull the package material to make it more stable during processing.

[0034] The package guide 5 includes a package guide hole arranged on the presser bar 1, which can make full use of the space of the presser bar 1 and has good stability. Of course, the package guide 5 can also be a guide frame.

[0035] The presser bar 1 is further provided with a core rope guide 6, which can pull the core rope to make it more stable when being wrapped by the package.

[0036] The core rope guide 6 includes a core rope guide hole arranged above the package guide hole, which can make full use of the space of the presser bar and has good stability. Moreover, the core rope guide hole is arranged above the package guide hole, so that the package can wrap the core rope from the back. At this time, the core rope is also located at the back of the first and second needle drop areas 21 and 22, so that the core rope will not be stepped on when the needle drops, further increasing the three-dimensional effect after sewing. Moreover, the core rope does not need to pass through the gap of the needle drop, so that a core rope larger than the gap between the two needles can be used. The structure layout is reasonable. Of course, the core rope guide 6 can also be a guide frame, which can be arranged on the top or side of the presser bar 1. The bottom of the outlet of the core rope guide hole is provided with an arc-shaped notch 61, which can further prevent the core rope from deforming.

[0037] The presser bar 2 is further provided with a decorative strip perforation 7, the bottom of which extends to the bottom of the package perforation 3 close to the bottom of the package perforation 3, so that the decorative strip can be sewn on the bottom of the package strip while sewing the double-blind package strip, and does not need to be sewn on the fabric in advance, which simplifies the processing flow and can be more processed during sewing.

[0038] The decorative strip perforation 7 includes a single-sided perforation or a double-sided perforation. The single-sided perforation can sew a single-sided decorative strip on the bottom of the package strip, and the double-sided perforation can sew a double-sided decorative strip on the bottom of the package strip. Of course, the double-sided perforation can be formed by a long hole, or can be formed by two long holes separated.

Claims

1. A double-blind sewing presser foot, comprising a presser foot handle (1) and a presser foot plate (2), a first drop needle area (21) and a second drop needle area (22) are arranged on the presser foot plate (2), characterized in that: The presser foot plate (2) is further provided with a threading area (23) between the first drop needle area (21) and the second drop needle area (22), the threading area (23) connects the first drop needle area (21) and the second drop needle area (22) to form a package threading hole (3), the presser foot handle (1) is further provided with a core rope guide (6), and the core rope guide (6) comprises a core rope guide hole arranged above the package guide hole.

2. A twin needle sewing presser foot according to claim 1, wherein: The package threading hole (3) is further provided with a limiting piece (4) corresponding to the position of the threading area (23) for abutting against the core rope.

3. A twin needle sewing presser foot according to claim 1 or 2, characterised in that: The presser foot handle (1) is further provided with a package guide (5).

4. A twin needle sewing presser foot according to claim 3, wherein: The package guide (5) comprises a package guide hole arranged on the presser foot handle (1).

5. A twin needle sewing presser foot according to claim 1 or 2, wherein: The presser foot plate (2) is further provided with a decorative strip threading hole (7), and the bottom of the decorative strip threading hole (7) extends to the bottom close to the package threading hole (3).

6. A twin needle sewing presser foot according to claim 5 wherein: The decorative strip threading hole (7) comprises a single-side threading hole or a double-side threading hole.

7. A twin needle sewing presser foot according to claim 6, wherein: An arc-shaped notch (61) is arranged at the outlet bottom of the core rope guide hole.

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