Sewing machine presser foot assembly suitable for three-dimensional three-needle five-thread process

Abstract

The sewing machine presser foot assembly comprises a needle plate and a presser foot matched with the needle plate, the presser foot is provided with a needle groove, the side, close to the needle plate, of the presser foot is provided with a groove used for being matched with a three-dimensional bone thread, and the groove extends in the length direction of the presser foot. When the three-needle five-thread technology is adopted for sewing the three-dimensional bone thread, the presser foot is more attached to the fabric, it is guaranteed that the sewing stitch does not deviate, the stability and uniformity of the sewing thread are improved, and therefore the effect of the three-dimensional bone thread is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sewing machines, in particular to a presser foot assembly suitable for three-dimensional three-thread five-line process. BACKGROUND

[0002] At present, as an important equipment in the textile and garment manufacturing industry, the performance and efficiency of the sewing machine directly affect the overall operation of the production line. The presser foot assembly of the sewing machine is an important component of the sewing machine, which plays a role in stabilizing the fabric and guiding the fabric. When sewing yoga pants, the three-dimensional three-thread five-line process is generally used to sew a three-dimensional bone line on the waistband of the yoga pants, that is, a seam line above the pubic bone of the pants. The function is that during the process of wearing yoga pants for medium and high intensity exercise, the three-dimensional bone line can make the fabric more crisp and have better skin grip, avoiding the situation of falling pants, and it is also beautiful.

[0003] The presser foot assembly of the sewing machine includes a needle plate and a presser foot. The bottom of the existing presser foot is usually flat, mainly suitable for sewing conventional thin materials, but when used for sewing the three-dimensional bone line of yoga pants, there is a gap between the presser foot and the fabric, which causes the sewing line to deviate, making it difficult to achieve the effect of the three-dimensional bone line. On the other hand, the existing presser foot is not reasonably structured at the needle drop position, for example, the presser foot needle slot suitable for three-thread five-line process is provided with two guide teeth (also known as Lizi) for needle drop positioning. When sewing a three-dimensional bone line, the Lizi is easy to hook the surface thread, causing the surface thread to be too loose and the stitch to be unattractive. SUMMARY

[0004] In order to improve the stability and uniformity of the three-dimensional bone line sewing, the present application provides a presser foot assembly of a sewing machine suitable for three-dimensional three-thread five-line process.

[0005] The presser foot assembly of a sewing machine suitable for three-dimensional three-thread five-line process provided by the present application adopts the following technical solution:

[0006] A presser foot assembly of a sewing machine suitable for three-dimensional three-thread five-line process, comprising a needle plate and a presser foot adapted to the needle plate, the presser foot is provided with a needle slot, and the side of the presser foot close to the needle plate is provided with a groove for matching the three-dimensional bone line, the groove extends along the length direction of the presser foot.

[0007] By adopting the above technical solution, the three-dimensional bone line can be accommodated in the groove during the sewing process of the three-dimensional three-thread five-line process, so that the presser foot can be in close contact with the fabric, and the presser foot can apply pressure to the fabric, thereby improving the stability and uniformity of the three-dimensional bone line sewing.

[0008] Preferably, the cross section of the groove is arc-shaped.

[0009] By adopting the technical scheme, the arc-shaped structure of the three-dimensional bone line can be better matched, and the presser foot and the fabric can be better attached.

[0010] Preferably, the recessed depth of the groove is 1.5mm-3mm.

[0011] By adopting the technical scheme, the thickness of the presser foot is not too small to affect the strength of the presser foot, and the recessed depth is not too shallow to affect the stability of the presser foot.

[0012] Preferably, the inner edge of the needle slot is flatly arranged.

[0013] By adopting the technical scheme, the inner edge of the entire needle slot is flat, and the problem that the existing needle slot is easy to hook the fabric thread and cause the fabric thread to be too loose is solved.

[0014] Preferably, a guide piece is fixed at the side of the presser foot close to the needle plate and corresponding to the side position, the side of the guide piece close to the needle plate is parallel to the needle plate, and the guide piece extends from the presser foot edge to the needle falling position of the needle slot.

[0015] By adopting the technical scheme, the guide piece can hold the sewing hem during the sewing process of the sewing machine, so that the fabric is smoothly sewn along the side position, thereby ensuring that the sewing stitch does not deviate and ensuring the effect of the three-dimensional bone line.

[0016] Preferably, the thickness of the guide piece is 0.3mm-0.4mm.

[0017] By adopting the technical scheme, the strength of the guide piece is not affected by the too thin thickness, and the cost is not increased by the too thick thickness.

[0018] Preferably, the corners of the guide piece are arranged as arc-shaped corners.

[0019] By adopting the technical scheme, the smoothness of the guide piece shape can be improved, and the safety can be improved.

[0020] Preferably, a through hole is arranged at the position of the needle slot of the needle plate, a pair of positioning pieces are arranged in the through hole and spaced apart along the width direction of the needle plate, the positioning pieces divide the through hole into needle falling holes for the three needles to pass through, the width ratio of the positioning piece to the through hole is 1 / 5-1 / 4, an inclined surface is arranged on the side of the positioning piece away from the presser foot, and the thickness of the positioning piece gradually increases from the front end in the sewing direction to the rear end in the sewing direction.

[0021] By adopting the technical scheme, the positioning piece is ground fine as a whole, the ground net thread is collected more tightly, and the surface can be raised after the ground net thread is collected tightly, thereby forming the effect of the three-dimensional bone line.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. In the sewing process of the three-dimensional three-needle five-thread process, the three-dimensional outline can be accommodated in the groove, so that the presser foot can be attached to the fabric, and the presser foot can apply pressure to the fabric, thereby improving the stability and uniformity of the three-dimensional outline;

[0024] 2. The inner edge of the entire needle slot is flat, solving the problem that the existing technology needle slot is easy to hook the fabric line, resulting in loose fabric line and unattractive stitch;

[0025] 3. The guide piece can hold the sewing stop during the sewing process of the sewing machine, so that the fabric can be smoothly sewn along the side position, thereby ensuring that the sewing stitch does not deviate and ensuring the effect of the three-dimensional outline;

[0026] 4. The positioning piece is ground fine as a whole, so that the bottom net line is collected more tightly. After the bottom net line is tightened, the surface can be raised to form the effect of the three-dimensional outline. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application.

[0028] Figure 2 is a schematic diagram of the bottom of the presser foot of the embodiment of the present application.

[0029] Figure 3 is a schematic diagram of the front of the needle plate of the embodiment of the present application.

[0030] Figure 4 is a schematic diagram of the bottom of the needle plate of the embodiment of the present application.

[0031] Explanation of reference signs:

[0032] 1, needle plate; 11, through hole; 12, positioning piece; 13, needle drop hole; 14, inclined surface; 2, presser foot; 21, needle slot; 22, groove; 23, guide piece. DETAILED DESCRIPTION

[0033] The following will be described in detail in combination with the accompanying Figures 1-2 The present application will be further described in detail.

[0034] The embodiment of the present application discloses a sewing machine presser foot assembly suitable for a three-dimensional three-needle five-thread process. Referring to Figure 1The sewing machine presser foot assembly comprises a needle plate 1 and a presser foot 2, the needle plate 1 is fixedly installed on the table top of the workbench of the sewing machine, the presser foot 2 is fixedly installed on the presser foot rod of the sewing machine, the presser foot 2 is located directly above the needle plate 1, the presser foot 2 is provided with a needle slot 21, the inner edge of the needle slot 21 is flat, which solves the problem that the existing technology is easy to hook the surface thread, causing the surface thread to be too loose; the presser foot 2 is matched with the needle plate 1; a groove 22 for matching the three-dimensional bone line is arranged at the middle position of the side of the presser foot 2 close to the needle plate 1, the groove 22 extends along the length direction of the presser foot 2, the cross section of the groove 22 is arc-shaped, the depth of the groove 22 is 1.5mm-3mm, in this embodiment, the depth of the groove 22 is 2mm; so that the three-dimensional bone line can be accommodated in the groove 22 during the sewing process of the three-dimensional three-needle five-line process, so that the presser foot 2 can be attached to the fabric.

[0035] Referring to Figure 1 and Figure 2 , the guide piece 23 is fixedly welded and installed on the side of the presser foot 2 close to the needle plate 1 and corresponding to the side, the guide piece 23 is L-shaped, the side of the guide piece 23 close to the needle plate 1 is parallel to the needle plate 1, and the guide piece 23 extends from the side of the presser foot 2 to the needle slot 21; the thickness of the guide piece 23 is 0.3mm-0.4mm, in this embodiment, the thickness of the guide piece 23 is 0.35mm; the corners of the guide piece 23 are all arc-shaped; so that the guide piece 23 can hold the sewing edge during the sewing process of the sewing machine, so that the fabric can be smoothly sewn along the side, so as to ensure that the sewing stitch does not deviate, and the effect of the three-dimensional bone line is achieved.

[0036] Referring to Figure 3 and Figure 4 , the needle plate 1 is provided with a through hole 11 at the position corresponding to the needle slot 21, the through hole 11 is rectangular, a pair of positioning pieces 12 are arranged in the through hole 11 along the width direction of the needle plate 1, the positioning pieces 12 are long strips, and the through hole 11 is divided into a needle falling hole 13 for the three needles by the positioning pieces 12; the width ratio of the positioning piece 12 to the width of the through hole 11 is 1 / 5-1 / 4, in this embodiment, the width ratio of the positioning piece 12 to the width of the through hole 11 is 1 / 4; an inclined surface 14 is arranged on the side of the positioning piece 12 away from the presser foot 2, and the thickness of the positioning piece 12 gradually increases from the front end in the sewing direction to the rear end in the sewing direction, wherein the sewing direction is the fabric feeding direction; so that the positioning piece 12 is ground fine, and the bottom net line is collected more tightly, and after the bottom net line is tightened, the surface can be raised to form the effect of the three-dimensional bone line.

[0037] The implementation principle of the sewing machine presser foot assembly suitable for the three-dimensional three-needle five-thread process is as follows: in the sewing process of the three-dimensional three-needle five-thread process, the three-dimensional bone line is contained in the arc-shaped groove 22, so that the presser foot 2 can be stably pressed on the fabric; and in the sewing process, the sewing stop end can always be held by the guide piece 23, so as to ensure that the sewing stitch does not deviate, and the effect of the three-dimensional bone line is achieved.

[0038] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A presser foot assembly for a sewing machine suitable for a three-dimensional five-thread process, comprising a needle plate (1) and a presser foot (2) adapted to said needle plate (1), said presser foot (2) being provided with a needle slot (21), characterized in that, The presser foot (2) is provided with a groove (22) for matching the three-dimensional stitch line on the side close to the needle plate (1), and the groove (22) extends along the length direction of the presser foot (2).

2. A presser foot assembly for a sewing machine suitable for use in a three-dimensional five-thread process according to claim 1, characterized in that The cross section of the groove (22) is arc-shaped.

3. A presser foot assembly for a sewing machine suitable for use in a three-dimensional five-thread process according to claim 2, characterized in that The depth of the groove (22) is 1.5-3mm.

4. The presser foot assembly for a three-dimensional three-thread five-needle sewing machine of claim 1, wherein, The inner edge of the needle groove (21) is flat.

5. The presser foot assembly for a three-dimensional three-thread five-needle sewing machine of claim 1, wherein, The presser foot (2) is fixed with a guide piece (23) on the side close to the needle plate (1) and corresponding to the side, the side of the guide piece (23) facing the needle plate (1) is parallel to the needle plate (1), and the guide piece (23) extends from the side of the presser foot (2) to the needle groove (21).

6. A presser foot assembly for a sewing machine suitable for use in a three dimensional five thread stitch process according to claim 5, wherein, The thickness of the guide piece (23) is 0.3-0.4mm.

7. The presser foot assembly for a three-dimensional three-thread five-needle sewing machine of claim 5, wherein, The corners of the guide piece (23) are arc-shaped.

8. The presser foot assembly for a three-dimensional three-thread five-needle sewing machine of claim 1, wherein, The needle plate (1) is provided with a through hole (11) corresponding to the position of the needle groove (21), and a pair of positioning pieces (12) are arranged in the through hole (11) along the width direction of the needle plate (1), the positioning pieces (12) divide the through hole (11) into a needle falling hole (13) for three needles, the width ratio of the positioning piece (12) to the through hole (11) is 1 / 5-1 / 4, the side of the positioning piece (12) away from the presser foot (2) is provided with an inclined surface (14), and the thickness of the positioning piece (12) gradually increases from the front end to the rear end in the sewing direction.

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