Sewing machine presser foot

Abstract

The utility model provides a sewing machine needle plate belongs to sewing machine technical field, it has solved the problem that the sewing material starts the sewing and leaves the longer thread, this sewing machine needle plate, including the main part of board shape and horizontal setting, the needle hole is opened in the vertical direction along the main part, the wire groove is opened in the rear side of needle hole on the main part, the wire groove is opened in the vertical direction along the main part, the length direction of wire groove is along horizontal direction and sets up, one end of wire groove is communicated to the rear side wall of needle hole, the side wall of wire groove other end is provided with the cutting edge on the main part and the cutting edge is towards the direction of above -mentioned needle hole and sets up. This sewing machine needle plate has the advantage that the thread can be cut short.

Description

Technical Field

[0001] This utility model belongs to the field of sewing machine technology and relates to a sewing machine needle plate. Background Technology

[0002] A sewing machine is a machine that uses one or more sewing threads to create one or more stitches on fabric, allowing one or more layers of fabric to interweave or sew together. Sewing machines can sew fabrics such as cotton, linen, silk, wool, and synthetic fibers, as well as products made of leather, plastic, and paper. The stitches produced are neat, beautiful, flat, and strong, and the sewing speed is fast and easy to use.

[0003] The needle plate is flat and horizontally mounted on the sewing machine table, allowing the fabric to pass over it. A needle hole runs vertically through the needle plate, allowing the needle to pass through and sew the fabric.

[0004] In the actual sewing process, when starting a seam, after sewing the first stitch, the remaining thread at the needle hole on the lower side of the fabric is relatively long. During the fabric feeding process, this can easily lead to tangles of thread at the start of the seam, which is not only detrimental to the appearance of the sewn fabric, but also easily affects the subsequent sewing process. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a sewing machine needle plate that solves the problem of excessively long thread left when starting to sew.

[0006] The objective of this utility model can be achieved through the following technical solution: a sewing machine needle plate, comprising a plate-shaped and horizontally arranged main body, wherein a needle hole is formed through the main body in a vertical direction, characterized in that a long strip-shaped wire groove is formed on the main body at the rear side of the needle hole, the wire groove extends through the main body in a vertical direction, the length direction of the wire groove is arranged in a horizontal direction, one end of the wire groove is connected to the rear side wall of the needle hole, and a cutting edge is formed on the side wall at the other end of the wire groove of the main body, with the cutting edge facing the needle hole.

[0007] In this sewing machine's needle plate, the fabric feeding direction is the front-to-back direction. When starting a stitch, the needle passes through the fabric and needle eye sequentially from top to bottom, leaving a relatively long thread inside the needle eye on the underside of the fabric. This thread hangs down naturally under its own weight. As the fabric is fed, the thread moves to the back of the needle eye and along the guide rail until it reaches the side wall at the other end of the guide rail, where it is cut by the cutting edge. This prevents the fabric from becoming tangled due to excessive thread length after passing through the needle plate, ensuring a good sewing result.

[0008] In the aforementioned sewing machine needle plate, the needle plate further includes a blade detachably connected to the main body. One side of the blade protrudes from the other end sidewall of the guide groove, forming the aforementioned cutting edge. Using a method of detachably connecting the blade to the main body for cutting thread facilitates blade replacement and maintenance, and is also simple to manufacture and cost-effective.

[0009] In the aforementioned sewing machine needle plate, a mounting groove is provided at the top or bottom of the main body. One side of the mounting groove is connected to the other end of the wire groove, and the blade is connected within the mounting groove. Installing the blade within the mounting groove prevents it from protruding from the main body, thus not only not affecting the normal use of the sewing machine needle plate but also ensuring safety.

[0010] In the aforementioned sewing machine needle plate, the blade has a V-shaped cutting edge. The V-shaped cutting edge is more conducive to cutting the opposite thread.

[0011] In the aforementioned sewing machine needle plate, the sidewall at the other end of the guide groove has an inclined surface that is tilted relative to the vertical direction. The lower end of the inclined surface is closer to the needle hole than the upper end. The cutting edge is formed between the inclined surface and the bottom surface of the main body. By directly forming the cutting edge as an integral piece with the inclined surface and the bottom surface, there is no need to separately manufacture and assemble the blade, making processing more convenient.

[0012] Compared with existing technologies, the needle plate of this sewing machine, through the setting of the guide groove and the cutting edge, can naturally cut the top thread by the cutting edge as the sewing material is fed, avoiding the situation where the sewing material becomes tangled due to the excessive length of the top thread after passing through the needle plate, thus ensuring the sewing effect of the sewing material, and the whole structure is relatively simple. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the needle plate of this sewing machine according to Embodiment 1.

[0014] Figure 2 This is a schematic diagram of the structure of the blade part in Embodiment 1 of the sewing machine needle plate.

[0015] Figure 3 This is a schematic diagram of the structure for cutting the thread in Embodiment 1 of the sewing machine needle plate.

[0016] Figure 4 This is a schematic diagram of the structure of embodiment two of the sewing machine needle plate.

[0017] Figure 5 This is a schematic diagram of the structure for cutting the thread in Embodiment 2 of the sewing machine needle plate.

[0018] In the diagram, 1. Main body; 1a. Pinhole; 1b. Wire groove; 1c. Mounting groove; 1d. Inclined surface; 2. Blade; 3. Cutting edge; 4. Sewing material; 5. Top thread. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] Example 1

[0021] like Figure 1 As shown, the sewing machine needle plate includes a flat, horizontally arranged main body 1. A circular needle hole 1a is vertically oriented through the main body 1. A long, narrow guide groove 1b is formed on the main body 1 behind the needle hole 1a, penetrating the main body 1 vertically and extending horizontally. One end of the guide groove 1b connects to the rear sidewall of the needle hole 1a, and the other end extends away from the needle hole 1a, forming an acute angle with the front-back direction. The other end of the guide groove 1b is a circular hole penetrating the main body 1 vertically, with a diameter smaller than that of the needle hole 1a. A cutting edge 3 is located on the sidewall of the main body 1 opposite the circular hole and needle hole 1a, facing the needle hole 1a. In this embodiment, the guide groove 1b can be straight or curved.

[0022] like Figure 2 As shown, in this embodiment, a rectangular mounting groove 1c is provided at the bottom of the main body 1 adjacent to the other end of the wire groove 1b. One side of the mounting groove 1c is connected to the other end of the wire groove 1b. The sewing machine needle plate also includes a square-shaped blade 2, which is disposed in the mounting groove 1c and does not protrude from the opening of the mounting groove 1c. The blade 2 is detachably connected to the bottom of the main body 1 by a vertically arranged screw passing through the blade 2. The cutting edge 3 of the blade 2 is oriented towards the wire groove 1b and protrudes from the side wall of the other end of the wire groove 1b. Here, the cutting edge 3 of the blade 2 is recessed in a V-shape. In addition, if necessary, the mounting groove 1c and the blade 2 can be disposed on the top of the main body 1.

[0023] In this sewing machine needle plate, the feeding direction of the fabric 4 is taken as the front-to-back direction, meaning the fabric 4 is fed from front to back. When starting to sew, the needle passes through the fabric 4 and needle hole 1a sequentially from top to bottom, leaving a relatively long top thread 5 inside the needle hole 1a on the lower side of the fabric 4. The top thread 5 hangs down naturally under its own weight. For example... Figure 3 As shown, as the sewing material 4 is fed, the top thread 5 moves to the rear side of the needle hole 1a and moves along the guide groove 1b until the top thread 5 moves to the side wall of the other end of the guide groove 1b, where it is cut by the cutting edge 3.

[0024] Example 2

[0025] like Figure 4 and Figure 5As shown, the technical solution of this embodiment is largely the same as that of Embodiment 1, except that: the other end of the wire groove 1b has an inclined surface 1d on the side wall opposite to the pinhole 1a, which is inclined relative to the vertical direction, and the lower end of the inclined surface 1d is closer to the pinhole 1a than the upper end. The cutting edge 3 is formed between the inclined surface 1d and the bottom surface of the main body 1. There is no need to open the mounting groove 1c or install the blade 2 separately, making processing more convenient.

[0026] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A sewing machine needle plate, comprising a plate-shaped, horizontally arranged main body (1), wherein a needle hole (1a) is provided through the main body (1) in a vertical direction, characterized in that, The main body (1) has a wire groove (1b) on the rear side of the pinhole (1a). The wire groove (1b) penetrates the main body (1) vertically and is arranged horizontally along its length. One end of the wire groove (1b) is connected to the rear side wall of the pinhole (1a). The main body (1) has a cutting edge (3) on the side wall at the other end of the wire groove (1b) and the cutting edge (3) is arranged in the direction of the pinhole (1a).

2. A sewing machine needle plate according to claim 1, characterized in that, The sewing machine needle plate also includes a blade (2), which is detachably connected to the body (1). One side of the blade (2) protrudes from the other sidewall of the wire groove (1b) and forms the aforementioned cutting edge (3).

3. A sewing machine needle plate according to claim 2, characterized in that, The main body (1) has an installation groove (1c) on its top or bottom. One side of the installation groove (1c) is connected to the other end of the wire groove (1b). The blade (2) is connected in the installation groove (1c).

4. A needle plate for a sewing machine according to claim 2 or 3, wherein The cutting edge (3) of the blade (2) is V-shaped.

5. A sewing machine needle plate according to claim 1, characterized in that, The sidewall at the other end of the wire groove (1b) has an inclined surface (1d) that is inclined relative to the vertical direction, and the lower end of the inclined surface (1d) is closer to the pinhole (1a) than the upper end. The cutting edge (3) is formed between the inclined surface (1d) and the bottom surface of the main body (1).

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