Presser foot structure of sewing machine

Abstract

The utility model relates to the technical field of sewing machine presser feet, and discloses a sewing machine presser foot structure which solves the problems that only narrow cloth can be pressed during use, and when cloth with high elasticity needs to be sewn, only narrow places can be pressed, so that the cloth cannot be sewn. The device comprises a connecting frame, a fixing block is fixedly connected to the bottom of the connecting frame, a groove is formed in the bottom of the fixing block, a rotating block is rotationally inserted into an inner cavity of the groove, a pressing foot is fixedly connected to the bottom of the rotating block, and a pressing rod is fixedly connected to the bottom of the pressing foot. The cloth pressing device has the advantages that wide cloth can be pressed, the rollers can be conveniently detached, accordingly, workers can conveniently observe the cloth, the rollers can be detached when the rollers are not needed, and the cloth pressing device is convenient to use and high in practicability. And the practicability of the whole device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewing machine presser feet, in particular to a sewing machine presser foot structure. Background Art

[0002] The sewing machine presser foot is an indispensable component in the feeding mechanism of the sewing machine. Various forms of sewing machine presser feet play a very important role in the production process, such as the sewing machine presser foot for sewing visible stitches, hidden zippers, pleating sewing machine presser feet, etc. It is very important to choose different sewing machine presser feet in different sewing operations.

[0003] According to the Chinese utility model patent with application number 201721822051.8, a presser foot structure for a sewing machine is disclosed, comprising a fixed block, a connecting rod, a sliding base plate, a presser foot, a fixed cross bar, a presser foot base plate and a socket, presser feet are installed on both sides of the presser foot base plate, and the bottom end of the presser foot is laterally installed with a fixed base plate, a second slide groove is provided at the middle position of the bottom end of the fixed base plate, and a sliding base plate is installed at the bottom end of the fixed base plate, a second slider connected to the second slide groove is installed at the top end of the sliding base plate, and a fixed protrusion is installed at the bottom end of the sliding base plate, a socket is provided on one side of the top end of the presser foot base plate, and fixed bases are installed at both ends of the other side of the top end of the presser foot base plate. The utility model is provided with a fixed base plate, a sliding base plate, a second slide groove, a second slider and a fixed protrusion. When in use, the second slider on the sliding base plate is aligned with the second slide groove for sliding and fixed installation. When in use, the fixed protrusion at the bottom end of the sliding base plate fixes the cloth to prevent slipping, which is convenient for use. This technology can only press narrower cloth when in use. When it is necessary to sew cloth with greater elasticity, it is inconvenient for staff to observe when sewing because only narrow areas can be pressed. Therefore, we propose a sewing machine presser foot structure. Utility Model Content

[0004] In order to solve the problem that only narrower fabrics can be pressed during use, and when it is necessary to sew fabrics with greater elasticity, it is inconvenient for workers to observe when sewing because only narrow places can be pressed, the utility model provides the following technical solutions: a sewing machine presser foot structure, including a connecting frame, a fixed block is fixedly connected to the bottom of the connecting frame, a groove is provided at the bottom of the fixed block, a rotating block is rotatably inserted in the inner cavity of the groove, a presser foot is fixedly connected to the bottom of the rotating block, a clamping groove is provided on the side of the fixed block, a detachable clamping rod is inserted in the inner cavity of the clamping groove, the other end of the clamping rod is rotatably connected to a roller, a through hole is provided on the top of the fixed block, and a limiting mechanism capable of limiting the clamping rod is provided in the inner cavity of the through hole.

[0005] Preferably, the limiting mechanism includes a limiting rod, a limiting plate and a spring, the limiting rod is slidably inserted in the through hole, the limiting plate is fixedly sleeved on the limiting rod, one end of the spring is fixedly connected to the limiting plate, and the other end of the spring is fixedly connected to the inner wall of the fixed block.

[0006] Preferably, a limiting groove is provided on the top of the clamping rod, and the limiting rod can be inserted into the limiting groove.

[0007] Preferably, there are two groups of limiting mechanisms, which are respectively located at the front and rear sides of the top of the fixed block, and there are two springs in each group of limiting mechanisms, which are respectively located at the front and rear sides of the top of the limiting plate.

[0008] Preferably, a rotating rod is fixedly connected to the side of the rotating block, a rotating groove is formed in the inner cavity of the rotating block on the side of the groove, and the rotating rod is rotatably inserted in the rotating groove.

[0009] Preferably, the number of the rotating rods is two, the two rotating rods are respectively located on two sides of the rotating block, and the two rotating rods are symmetrically arranged with respect to the longitudinal center line of the rotating block.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The whole is installed through the connecting frame, and then the cloth to be pressed is placed on the bottom of the presser foot, and sewing can be carried out. When the cloth to be sewn is thicker, the roller needs to be installed. First, the limit rod is slid upward, and the limit rod drives the limit plate to slide upward. The limit plate will squeeze the spring when sliding upward. When the limit rod slides into the through hole, the card rod can be inserted into the card slot, and then the limit rod is released and pulled, the spring will rebound the limit plate downward, and the limit plate will drive the limit rod to slide downward. When the limit rod slides downward and is inserted in the limit slot, the limit of the card rod can be achieved, thereby completing the installation of the roller, and then the cloth can be placed on the bottom of the presser foot, and the roller can squeeze the cloth downward, so that the staff can observe and sew the cloth conveniently, and can press wider cloth, and can conveniently disassemble the roller, so as to achieve the effect of convenient observation by the staff, and can be disassembled when the roller is not needed, thereby improving the practicality of the whole device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] 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:

[0013] Figure 1 It is a front view structural schematic diagram of the utility model as a whole;

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model as a whole from the side;

[0015] Figure 3 For this utility model Figure 2 A is a schematic diagram of the enlarged structure of the middle part;

[0016] In the figure: 1, connecting frame; 2, fixing block; 3, groove; 4, rotating block; 5, presser foot; 6, rotating rod; 7, rotating groove; 8, clamping slot; 9, clamping rod; 10, roller; 11, limiting groove; 12, through hole; 13, limiting rod; 14, limiting plate; 15, spring. DETAILED DESCRIPTION

[0017] 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.

[0018] Depend on Figure 1-Figure 3 The utility model includes a connecting frame 1, a fixed block 2 is fixedly connected to the bottom of the connecting frame 1, a groove 3 is provided at the bottom of the fixed block 2, a rotating block 4 is rotatably inserted in the inner cavity of the groove 3, a presser foot 5 is fixedly connected to the bottom of the rotating block 4, a card slot 8 is provided on the side of the fixed block 2, a detachable card rod 9 is inserted in the inner cavity of the card slot 8, a roller 10 is rotatably connected to the other end of the card rod 9, a through hole 12 is provided on the top of the fixed block 2, and a limiting mechanism capable of limiting the card rod 9 is provided in the inner cavity of the through hole 12.

[0019] At the same time, the limiting mechanism includes a limiting rod 13, a limiting plate 14 and a spring 15. The limiting rod 13 is slidably inserted in the through hole 12, the limiting plate 14 is fixedly sleeved on the limiting rod 13, one end of the spring 15 is fixedly connected to the limiting plate 14, and the other end of the spring 15 is fixedly connected to the inner wall of the fixed block 2. The limiting mechanism can limit the clamping rod 9, thereby facilitating the installation and disassembly of the roller 10.

[0020] In addition, a limiting groove 11 is provided on the top of the clamping rod 9 , and the limiting rod 13 can be inserted into the limiting groove 11 , so that the clamping rod 9 can be easily installed and removed.

[0021] In addition, there are two groups of limiting mechanisms, which are respectively located at the front and rear sides of the top of the fixed block 2. There are two springs 15 in each of the two groups of limiting mechanisms, which are respectively located at the front and rear sides of the top of the limiting plate 14. The two groups of limiting mechanisms can limit the two card rods 9, thereby facilitating the disassembly of the two card rods 9.

[0022] In addition, a rotating rod 6 is fixedly connected to the side of the rotating block 4, and a rotating groove 7 is opened on the side of the groove 3 in the inner cavity of the rotating block 4. The rotating rod 6 is rotatably inserted in the rotating groove 7. The setting of the rotating rod 6 and the rotating groove 7 can realize the rotation of the rotating block 4.

[0023] In addition, there are two rotating rods 6, which are respectively located on the two sides of the rotating block 4, and the two rotating rods 6 are symmetrically arranged with respect to the longitudinal center line of the rotating block 4. The two rotating rods 6 can make the rotating block 4 more stable when rotating.

[0024] Working principle: When working, first install the whole through the connecting frame 1, and then place the cloth to be pressed on the bottom of the presser foot 5, and then you can sew. When the cloth to be mended is thicker, you need to install the roller 10, first slide the limit rod 13 upward, the limit rod 13 will drive the limit plate 14 to slide upward, and the limit plate 14 will squeeze the spring 15 when it slides upward. When the limit rod 13 slides into the through hole 12, the card rod 9 can be inserted into the card slot 8, and then release and pull the limit rod 13, the spring 15 will rebound the limit plate 14 downward, and the limit plate 14 will drive the limit rod 13 to slide downward. When the limit rod 13 slides downward and is inserted into the limit groove 11, the card rod 9 can be limited, thereby completing the installation of the roller 10, and then the cloth can be placed on the bottom of the presser foot 5, and the roller 10 can squeeze the cloth downward, so that it is convenient for the staff to observe and sew the cloth.

[0025] 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.

[0026] 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 sewing machine presser foot structure, comprising a connecting frame (1), characterized in that: The bottom of the connecting frame (1) is fixedly connected to a fixed block (2), the bottom of the fixed block (2) is provided with a groove (3), the inner cavity of the groove (3) is rotatably plugged with a rotating block (4), the bottom of the rotating block (4) is fixedly connected to a presser foot (5), the side of the fixed block (2) is provided with a slot (8), the inner cavity of the slot (8) is plugged with a detachable clamping rod (9), the other end of the clamping rod (9) is rotatably connected to a roller (10), the top of the fixed block (2) is provided with a through hole (12), and the inner cavity of the through hole (12) is provided with a limiting mechanism capable of limiting the clamping rod (9).

2. A sewing machine presser foot structure according to claim 1, characterized in that: The limiting mechanism comprises a limiting rod (13), a limiting plate (14) and a spring (15); the limiting rod (13) is slidably inserted in the through hole (12); the limiting plate (14) is fixedly sleeved on the limiting rod (13); one end of the spring (15) is fixedly connected to the limiting plate (14); and the other end of the spring (15) is fixedly connected to the inner wall of the fixed block (2).

3. A sewing machine presser foot structure according to claim 2, characterized in that: A limiting groove (11) is provided on the top of the clamping rod (9), and the limiting rod (13) can be inserted into the limiting groove (11).

4. A sewing machine presser foot structure according to claim 3, characterized in that: There are two groups of limiting mechanisms, which are respectively located at the front side and the rear side of the top of the fixed block (2). There are two springs (15) in each of the two groups of limiting mechanisms, which are respectively located at the front side and the rear side of the top of the limiting plate (14).

5. A sewing machine presser foot structure according to claim 4, characterized in that: A rotating rod (6) is fixedly connected to the side of the rotating block (4); a rotating groove (7) is provided in the inner cavity of the rotating block (4) on the side of the groove (3); and the rotating rod (6) is rotatably inserted into the rotating groove (7).

6. A sewing machine presser foot structure according to claim 5, characterized in that: The number of the rotating rods (6) is two, and the two rotating rods (6) are respectively located on two side surfaces of the rotating block (4), and the two rotating rods (6) are symmetrically arranged with respect to the longitudinal center line of the rotating block (4).

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