Sewing machine presser foot mechanism and sewing machine

Abstract

The utility model discloses a sewing machine presser foot mechanism and a sewing machine, wherein the sewing machine presser foot mechanism comprises a needle bar and a presser foot bar, a machine needle is installed at the lower end of the needle bar, an adapter is installed at the lower end of the presser foot bar, a presser foot is arranged at the free end of the adapter, an avoidance space is formed in the horizontal direction of the adapter, and the avoidance space is used to avoid a clamp on the sewing machine; the sewing machine comprises the sewing machine presser foot mechanism. The sewing machine presser foot mechanism and the sewing machine have the characteristics of simple structure and convenient implementation, and can avoid the action interference between the presser foot and the jig of the sewing machine during application, avoid collision damage of parts, and improve production efficiency.

Description

Technical Field

[0001] The utility model relates to the field of sewing machines, in particular to a sewing machine presser foot mechanism and a sewing machine. Background Art

[0002] Sewing machines are commonly used production equipment in the field of clothing production and are widely used.

[0003] In various automated sewing solutions, due to customers' ever-increasing quality and style requirements, the distance from the sewing line to the fixture is getting smaller and smaller.

[0004] At the same time, due to the limitation of the traditional presser foot structure, the design of the fixture cannot exceed a certain height. If it is too high, it will "fight" with the presser foot, which will cause parts to crash. This situation has a very adverse impact on the design of the fixture, the operation of the operator, and the safety of the machine.

[0005] Therefore, the purpose of the present invention is to provide a new technical solution to solve the existing technical defects. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the utility model provides a sewing machine presser foot mechanism and a sewing machine, which effectively solve the technical defect of the prior art that parts collision easily occurs.

[0007] The technical solution adopted by the utility model to solve its technical problems is:

[0008] A presser foot mechanism for a sewing machine comprises a needle bar and a presser foot bar, wherein a machine needle is mounted on the lower end of the needle bar, an adapter is mounted on the lower end of the presser foot bar, a presser foot is arranged on the free end of the adapter, an avoidance space is formed on the adapter in the horizontal direction, and the avoidance space is used to avoid a clamp on the sewing machine.

[0009] As an improvement of the above technical solution, the adapter is an L-shaped component, which forms an avoidance space on the inner side of its bend, one end of the L-shaped component is fixedly arranged on the lower end of the presser foot rod, and the presser foot is fixedly installed on the other end of the L-shaped component.

[0010] As a further improvement of the above technical solution, the presser foot includes a presser foot connecting part, a needle passing through a sleeve and an intermediate connecting part connected between the presser foot connecting part and the needle passing through the sleeve, the presser foot connecting part is used to be fixedly connected to the adapter, and the needle can pass through the needle passing through the sleeve.

[0011] As a further improvement of the above technical solution, the presser foot connecting portion has a connecting groove extending in a vertical direction, and the adapter has a protruding connecting protrusion, and the connecting protrusion is inserted into the connecting groove so that the adapter and the presser foot connecting portion are connected to each other;

[0012] The presser foot connecting part is provided with a first U-shaped hole, the adapter is provided with a first connecting hole at its connecting protrusion, and the presser foot connecting part is fixedly connected to the first connecting hole of the adapter after a first screw passes through its first U-shaped hole.

[0013] As a further improvement of the above technical solution, the middle connecting portion is an inclined connecting portion, and the cross-sectional size of the middle connecting portion gradually decreases from top to bottom.

[0014] As a further improvement of the above technical solution, the adapter is provided with an assembly groove at one end thereof close to the presser foot rod, the lower end of the presser foot rod is provided with a positioning structure adapted to the assembly groove, and the positioning structure is installed in the assembly groove and fixedly connected to the assembly groove;

[0015] The adapter is provided with a second U-shaped hole at the location where the assembly groove is set, and the presser foot rod is provided with a second connecting hole at its positioning structure. The adapter is fixedly connected to the second connecting hole of the positioning structure after a second screw passes through its second U-shaped hole.

[0016] As a further improvement of the above technical solution, a machine needle mounting hole is provided at the lower end of the needle bar, the machine needle is installed in the machine needle mounting hole, a machine needle fixing hole is provided on the side of the needle bar, the machine needle fixing hole is connected with the machine needle mounting hole, and a machine needle fixing piece is provided in the machine needle fixing hole. When the machine needle is inserted into the machine needle mounting hole of the needle bar, the inner end of the machine needle fixing piece is pressed against the side of the machine needle and fixes the machine needle in the machine needle mounting hole.

[0017] As a second implementation improvement of the above technical solution, the adapter and the presser foot are integrally formed.

[0018] As a third implementation improvement of the above technical solution, the presser foot is rotatably arranged on the free end of the adapter.

[0019] The utility model also provides:

[0020] A sewing machine comprises the sewing machine presser foot mechanism.

[0021] The beneficial effect of the utility model is as follows: the utility model provides a sewing machine presser foot mechanism and a sewing machine, the sewing machine presser foot mechanism and the sewing machine provide an adapter to install the presser foot, and convert the installation space of the presser foot through the adapter, thereby avoiding the situation in the prior art that the presser foot is easy to collide with other components, and removing the restriction on the installation height in the existing equipment, which not only protects the equipment, but also improves work efficiency.

[0022] In summary, the sewing machine presser foot mechanism and the sewing machine effectively solve the technical defect of the prior art that parts collision is prone to occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 It is a schematic diagram of the assembly of a presser foot mechanism of a sewing machine in Embodiment 1 of the present utility model;

[0025] Figure 2 This is a structural disassembled diagram of a presser foot mechanism of a sewing machine in Embodiment 1 of the utility model;

[0026] Figure 3 yes Figure 1 A partial enlarged view of middle A;

[0027] Figure 4 yes Figure 2 A partial enlarged view of B. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technical personnel in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the creation of the utility model can be combined interchangeably without conflicting with each other, refer to Figure 1-4 .

[0029] Embodiment 1:

[0030] Specific reference Figure 1-4The utility model provides a presser foot mechanism of a sewing machine, including a machine head 9, on which a needle bar 1 and a presser foot bar 3 are installed, the lower end of the needle bar 1 extends to the lower part of the machine head 9 and is installed with a machine needle 2, the lower end of the presser foot bar 3 extends to the lower part of the machine head 9 and is installed with an adapter 4, a presser foot 5 is provided at the free end of the adapter 4, and an avoidance space is formed in the horizontal direction of the adapter 4, and the avoidance space is used to avoid the clamp on the sewing machine. The technical solution transfers the presser foot 5 through the adapter 4, transfers the inclined part of the presser foot 5 to a place where it is not easy to collide with the sewing machine clamp, avoids the position interference between the inclined part of the presser foot 5 and the sewing machine clamp and other parts, thereby avoiding the collision of parts, and also helps the design of the clamp originally located at the left end of the traditional presser foot.

[0031] In this embodiment, the adapter 4 is an L-shaped component, and the L-shaped component forms an avoidance space inside its bend, one end of the L-shaped component is fixedly arranged at the lower end of the presser foot rod 3, and the presser foot 5 is fixedly installed at the other end of the L-shaped component. In this embodiment, the presser foot 5 is turned from the front of the needle bar 1 after being transferred by the adapter 4. In other embodiments, if it meets the needs, the presser foot 5 can also be turned from the back of the needle bar 1 through the adapter 4.

[0032] Furthermore, the presser foot 5 includes a presser foot connection portion 51, a needle passing sleeve 53, and an intermediate connection portion 52 connected between the presser foot connection portion 51 and the needle passing sleeve 53. The presser foot connection portion 51 is used to be fixedly connected to the adapter 4, and the needle 2 can pass through the needle passing sleeve 53. The intermediate connection portion 52 is an inclined connection portion, and the cross-sectional size of the intermediate connection portion 52 gradually decreases from top to bottom.

[0033] In this embodiment, the presser foot connection part 51 has a connection groove 511 extending in the vertical direction, and the adapter 4 has a protruding connection protrusion 411, which is inserted into the connection groove 511 and connects the adapter 4 and the presser foot connection part 51 to each other; the presser foot connection part 51 has a first U-shaped hole 512, and the adapter 4 has a first connection hole 412 at its connection protrusion 411, and the presser foot connection part 51 is fixedly connected to the first connection hole 412 of the adapter 4 after the first screw passes through its first U-shaped hole 512. When implementing the utility model, the installation height of the presser foot 5 can be adjusted through the first U-shaped hole 512, which is convenient for installation and debugging and adapting to different product needs.

[0034] Further, the adapter 4 is provided with an assembly groove 421 at one end thereof close to the presser foot rod 3, and the lower end of the presser foot rod 3 is provided with a positioning structure 311 adapted to the assembly groove 421, and the positioning structure 311 is installed in the assembly groove 421 and fixedly connected to the assembly groove 421; the adapter 4 is provided with a second U-shaped hole 422 at the location where the assembly groove 421 is provided, and the presser foot rod 3 is provided with a second connecting hole 312 at the location where the positioning structure 311 is provided, and the adapter 4 is fixedly connected to the second connecting hole 312 of the positioning structure 311 after a second screw passes through the second U-shaped hole 422 thereof. The installation height of the adapter 4 can be adjusted through the second U-shaped hole 422, which is convenient for adjusting the installation and debugging of the adapter 4, and can thus be adapted to different production requirements.

[0035] In the present technical solution, a machine needle mounting hole is provided at the lower end of the needle bar 1, and the machine needle 2 is installed in the machine needle mounting hole. A machine needle fixing hole is provided on the side of the needle bar 1, and the machine needle fixing hole is connected with the machine needle mounting hole. A machine needle fixing part is provided in the machine needle fixing hole. When the machine needle 2 is inserted into the machine needle mounting hole of the needle bar 1, the inner end of the machine needle fixing part presses against the side of the machine needle 2 and fixes the machine needle in the machine needle mounting hole. Among them, a plurality of machine needle fixing holes and machine needle fixing parts can be provided, and the machine needle fixing hole can be provided as a screw hole, and the machine needle fixing part includes a stud part that matches the screw hole.

[0036] Based on the above sewing machine presser foot mechanism, the utility model also provides:

[0037] A sewing machine comprises the sewing machine presser foot mechanism.

[0038] Embodiment 2:

[0039] This embodiment is basically the same as the embodiment 1, except that the adapter 4 and the presser foot 5 are integrally formed. By configuring the adapter 4 and the presser foot 5 as an integrally formed part, the number of parts and components can be reduced, the assembly workload can be reduced, and the integrity and stability of the structure can be improved.

[0040] Embodiment 2:

[0041] This embodiment is basically the same as the embodiment 1, except that the presser foot 5 is rotatably arranged on the free end of the adapter 4. With this structural arrangement, the presser foot 5 can rotate around the rotation axis at the free end of the adapter 4, making it convenient for workers to change needles.

[0042] The above is a specific description of the preferred implementation of the utility model, but the invention of the utility model is not limited to the described embodiments. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the utility model. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A presser foot mechanism for a sewing machine, characterized in that: It comprises a needle bar (1) and a presser foot bar (3), wherein a machine needle (2) is mounted on the lower end of the needle bar (1), a connecting piece (4) is mounted on the lower end of the presser foot bar (3), and a presser foot (5) is disposed on the free end of the connecting piece (4).

2. A sewing machine presser foot mechanism according to claim 1, characterized in that: The adapter (4) is an L-shaped component, wherein an avoidance space is formed on the inner side of the bending part of the L-shaped component, one end of the L-shaped component is fixedly arranged on the lower end of the presser foot rod (3), and the presser foot (5) is fixedly installed on the other end of the L-shaped component.

3. A sewing machine presser foot mechanism according to claim 1, characterized in that: The presser foot (5) comprises a presser foot connecting portion (51), a needle passing sleeve (53), and an intermediate connecting portion (52) connected between the presser foot connecting portion (51) and the needle passing sleeve (53); the presser foot connecting portion (51) is used for being fixedly connected to the adapter (4); and the needle (2) can pass through the needle passing sleeve (53).

4. A sewing machine presser foot mechanism according to claim 3, characterized in that: The presser foot connecting portion (51) has a connecting groove (511) extending in a vertical direction, and the adapter (4) has a protruding connecting protrusion (411), and the connecting protrusion (411) is inserted into the connecting groove (511) so that the adapter (4) and the presser foot connecting portion (51) are connected to each other; The presser foot connecting portion (51) is provided with a first U-shaped hole (512), the adapter (4) is provided with a first connecting hole (412) at its connecting protrusion (411), and the presser foot connecting portion (51) is fixedly connected to the first connecting hole (412) of the adapter (4) after a first screw passes through the first U-shaped hole (512).

5. A sewing machine presser foot mechanism according to claim 3, characterized in that: The middle connecting portion (52) is an inclined connecting portion, and the cross-sectional size of the middle connecting portion (52) gradually decreases from top to bottom.

6. A sewing machine presser foot mechanism according to claim 1, characterized in that: The adapter (4) is provided with an assembly groove (421) at one end thereof close to the presser foot rod (3); the lower end of the presser foot rod (3) is provided with a positioning structure (311) adapted to the assembly groove (421); the positioning structure (311) is installed in the assembly groove (421) and is fixedly connected to the assembly groove (421); The adapter (4) is provided with a second U-shaped hole (422) at the location where the assembly groove (421) is provided, and the presser foot rod (3) is provided with a second connecting hole (312) at the location of the positioning structure (311); the adapter (4) is fixedly connected to the second connecting hole (312) of the positioning structure (311) after a second screw passes through the second U-shaped hole (422).

7. A sewing machine presser foot mechanism according to claim 1, characterized in that: A machine needle mounting hole is provided at the lower end of the needle bar (1), and the machine needle (2) is installed in the machine needle mounting hole. A machine needle fixing hole is provided on the side of the needle bar (1), and the machine needle fixing hole is connected to the machine needle mounting hole. A machine needle fixing part is provided in the machine needle fixing hole. When the machine needle (2) is inserted into the machine needle mounting hole of the needle bar (1), the inner end of the machine needle fixing part presses against the side of the machine needle (2) and fixes the machine needle in the machine needle mounting hole.

8. The presser foot mechanism for a sewing machine according to claim 1, characterized in that: The adapter (4) and the presser foot (5) are integrally formed parts.

9. A sewing machine presser foot mechanism according to claim 1, characterized in that: The presser foot (5) is rotatably arranged on the free end of the adapter (4).

10. A sewing machine, characterized in that: The sewing machine comprises the sewing machine presser foot mechanism according to any one of claims 1 to 9.

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