Concealed stitch presser foot of sewing machine

Abstract

The utility model relates to the technical field of wine filling, and discloses a concealed stitch presser foot of a sewing machine, which solves the problems in the background technology and comprises a presser foot mounting handle, a strip-shaped bump is arranged on the front wall of the presser foot mounting handle along the horizontal direction, the presser foot mounting handle is slidably connected with a first presser foot bottom plate through the strip-shaped bump, and the first presser foot bottom plate is connected with a second presser foot bottom plate through the strip-shaped bump. The other side of the presser foot installation handle is connected with the second presser foot bottom plate, a long bolt penetrates through the side, close to the presser foot installation handle, of the first presser foot bottom plate, the first presser foot bottom plate is connected with the long bolt through threads, the head of the long bolt is rotatably connected into the second presser foot bottom plate, and the head of the long bolt is provided with an annular protrusion. The sewing machine presser foot has the advantages that the sewing quality can be prevented from being affected due to the fact that sewn lines are not uniform, not straight or deviated, and the sewing machine presser foot is suitable for cloth with different widths.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewing-related equipment, in particular to a blind stitch presser foot of a sewing machine. Background Art

[0002] In our daily life, the diversity and functionality of clothing have put forward higher requirements on sewing technology. Traditional sewing methods sometimes sew the stitches directly on the surface of the clothes, which not only affects the overall aesthetics of the clothes, but also the exposed stitches are easy to come off, causing inconvenience to the wearer. The blind stitch technology uses special sewing methods and special sewing accessories to hide the stitches inside the clothes without leaving obvious marks on the surface.

[0003] The design and manufacturing accuracy of the blind stitch presser foot are crucial to the sewing effect. The design of the blind stitch presser foot enables the needle of the sewing machine to accurately pass through the edge of the cloth. At the same time, the pressure of the presser foot can press the cloth tightly against the feed plate of the sewing machine to prevent the cloth from moving or wrinkling during the sewing process. Among the existing blind stitch presser foot devices, most of the devices are not accurate enough, resulting in uneven, crooked or deviated sewn lines, affecting the sewing quality, and there are also certain limitations for cloths of different widths. For this reason, we propose a blind stitch presser foot for a sewing machine. Utility Model Content

[0004] In order to solve the problem that the current device is not accurate enough, resulting in uneven, non-straight or deviation in sewing lines, affecting the sewing quality, and there are certain limitations for fabrics of different widths, the utility model provides the following technical solutions: comprising a presser foot mounting handle, a strip-shaped protrusion is arranged on the front wall of the presser foot mounting handle in the horizontal direction, the presser foot mounting handle is slidably connected to a first presser foot base plate through the strip-shaped protrusion, the other side of the presser foot mounting handle is connected to a second presser foot base plate, a long bolt penetrates the side of the first presser foot base plate close to the presser foot mounting handle, the first presser foot base plate and the long bolt are connected The bolt is connected by threads, and the head of the long bolt is rotatably connected to the second presser foot sole plate. The head of the long bolt has an annular protrusion, and an empty groove matching the annular protrusion is provided in the second presser foot sole plate. A guide mechanism is provided on the side wall of the second presser foot sole plate away from the first presser foot sole plate, and the guide mechanism includes a spring, an adjusting screw and a baffle plate. The adjusting screw passes through the baffle plate and the spring in sequence and is threadedly connected to the side wall of the second presser foot sole plate. The bottom of the baffle plate is arranged between the first presser foot sole plate and the second presser foot sole plate, and a recess is provided on the inner wall of the first presser foot sole plate.

[0005] Preferably, the notch is semicircular, which serves as a limit for the needle of the sewing machine, so that the needle of the sewing machine can accurately pass through the edge of the cloth to ensure precision.

[0006] Preferably, a protective cover is provided on the outer wall of the recess, and the protective cover is made of rubber, foam plastic, polyvinyl chloride or silicone.

[0007] Preferably, a wear-resistant coating is provided at the bottom of the baffle, and the wear-resistant coating is a silicon carbide wear-resistant material.

[0008] Preferably, a groove is provided at the tail of the long bolt, and the cross-section of the groove is a regular hexagon. When the blind stitch presser foot of the sewing machine is installed on the sewing machine, it is inconvenient to operate due to limited space and can be adjusted by an Allen wrench.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] When working, first rotate the long bolt. Since the first presser foot base plate is threadedly connected with the long bolt, the first presser foot base plate is driven to slide along the strip protrusion on the presser foot mounting handle through thread transmission. The annular protrusion on the head of the long bolt slides in the empty groove of the second presser foot base plate to avoid falling off, thereby controlling the first presser foot base plate and the second presser foot base plate to approach or move away from each other, thereby realizing the spacing adjustment. The presser foot mounting handle is installed on the sewing machine, and the adjusting screw is turned to control the bottom of the baffle to press the cloth to avoid uneven, crooked or deviational sewing lines that affect the sewing quality. It is suitable for cloths of different widths. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model from top view;

[0013] Figure 2 It is a schematic diagram of the overall side view of the utility model;

[0014] Figure 3 It is a front view structural schematic diagram of the utility model as a whole;

[0015] In the figure: 1. presser foot mounting handle; 2. strip-shaped protrusion; 3. first presser foot base plate; 4. second presser foot base plate; 5. long bolt; 6. spring; 7. adjusting screw; 8. baffle; 9. notch; 10. protective cover; 11. annular protrusion; 12. empty groove; 13. groove. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0017] Depend on Figure 1-3 The utility model comprises a presser foot mounting handle 1, a strip protrusion 2 is provided on the front wall of the presser foot mounting handle 1 in the horizontal direction, the presser foot mounting handle 1 is slidably connected to the first presser foot sole plate 3 through the strip protrusion 2, and the other side of the presser foot mounting handle 1 is connected to the second presser foot sole plate 4, a long bolt 5 is passed through the side of the first presser foot sole plate 3 close to the presser foot mounting handle 1, the first presser foot sole plate 3 and the long bolt 5 are threadedly connected, the head of the long bolt 5 is rotatably connected to the second presser foot sole plate 4, the head of the long bolt 5 has an annular protrusion 11, and the second presser foot sole plate 4 is provided with an empty groove 12 matching the annular protrusion 11, and the side wall of the second presser foot sole plate 4 away from the first presser foot sole plate 3 is provided with a guide mechanism, the guide mechanism comprises a spring 6, an adjusting screw 7 and a baffle 8, the adjusting screw 7 passes through the baffle 8 and the spring 6 in sequence and is threadedly connected to the side wall of the second presser foot sole plate 4, the bottom of the baffle 8 is arranged between the first presser foot sole plate 3 and the second presser foot sole plate 4, and the inner wall of the first presser foot sole plate 3 is provided with a notch 9.

[0018] The notch 9 is semicircular and serves to limit the position of the sewing machine needle, so that the sewing machine needle can accurately pass through the edge of the cloth to ensure accuracy.

[0019] A protective cover 10 is arranged on the outer wall of the notch 9, and the protective cover 10 is made of rubber, foam plastic, polyvinyl chloride or silica gel.

[0020] The bottom of the baffle 8 is provided with a wear-resistant coating, which is a silicon carbide wear-resistant material.

[0021] A groove 13 is provided at the tail of the long bolt 5, and the cross section of the groove 13 is a regular hexagon. When the blind stitch presser foot of the sewing machine is installed on the sewing machine, it is inconvenient to operate due to limited space, and can be adjusted by an Allen wrench.

[0022] Working principle: When working, first rotate the long bolt 5. Since the first presser foot base plate 3 is threadedly connected with the long bolt 5, the first presser foot base plate 3 is driven to slide along the strip protrusion 2 on the presser foot mounting handle 1 through thread transmission. The annular protrusion 11 on the head of the long bolt 5 slides in the empty groove 12 of the second presser foot base plate 4 to avoid falling off, thereby controlling the first presser foot base plate 3 and the second presser foot base plate 4 to move closer or farther away from each other, thereby realizing the spacing adjustment. The presser foot mounting handle 1 is installed on the sewing machine, and the adjusting screw 7 is turned to control the bottom of the baffle 8 to press the cloth to avoid uneven, crooked or deviational sewing lines that affect the sewing quality. It is suitable for cloths of different widths.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A blind stitch presser foot for a sewing machine, comprising a presser foot mounting handle (1), characterized in that: The front wall of the presser foot mounting handle (1) is provided with a strip-shaped protrusion (2) in the horizontal direction. The presser foot mounting handle (1) is slidably connected to the first presser foot base plate (3) through the strip-shaped protrusion (2). The other side of the presser foot mounting handle (1) is connected to the second presser foot base plate (4). A long bolt (5) penetrates through the side of the first presser foot base plate (3) close to the presser foot mounting handle (1). The first presser foot base plate (3) and the long bolt (5) are connected by threads. The head of the long bolt (5) is rotatably connected in the second presser foot base plate (4). The head of the long bolt (5) has an annular protrusion (11). The second presser foot sole plate (4) is provided with a hollow groove (12) matching the annular protrusion (11); the side wall of the second presser foot sole plate (4) away from the first presser foot sole plate (3) is provided with a guide mechanism, the guide mechanism comprising a spring (6), an adjusting screw (7) and a baffle (8); the adjusting screw (7) passes through the baffle (8) and the spring (6) in sequence and is then threadedly connected to the side wall of the second presser foot sole plate (4); the bottom of the baffle (8) is arranged between the first presser foot sole plate (3) and the second presser foot sole plate (4); and the inner wall of the first presser foot sole plate (3) is provided with a notch (9).

2. A blind stitch presser foot for a sewing machine according to claim 1, characterized in that: The notch (9) is semicircular.

3. The blind stitch presser foot for a sewing machine according to claim 1, characterized in that: A protective cover (10) is arranged on the outer wall of the notch (9), and the protective cover (10) is made of rubber, foam plastic, polyvinyl chloride or silica gel.

4. The blind stitch presser foot for a sewing machine according to claim 1, characterized in that: The bottom of the baffle (8) is provided with a wear-resistant coating, and the wear-resistant coating is a silicon carbide wear-resistant material.

5. The blind stitch presser foot for a sewing machine according to claim 1, characterized in that: The tail of the long bolt (5) is provided with a groove (13), and the cross section of the groove (13) is a regular hexagon.

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