CN217869415U

CN217869415U - Presser foot mechanism of sewing machine

Info

Publication number: CN217869415U
Application number: CN202221745941.4U
Authority: CN
Inventors: 汤宸技; 杨莹瑛
Original assignee: Wujiang Yangguang Science And Technology Sewing Machine Co ltd
Current assignee: Wujiang Yangguang Science And Technology Sewing Machine Co ltd
Priority date: 2022-07-06
Filing date: 2022-07-06
Publication date: 2022-11-22
Anticipated expiration: 2032-07-06

Abstract

The utility model relates to a sewing machine presser foot technical field to a sewing machine presser foot mechanism is disclosed, be in including presser foot board and assembly the detachable hood on presser foot board top, it is equipped with the cutting blade still to slide on the presser foot board, still includes: the block body is fixedly connected to the foot pressing plate; the through hole penetrates through the side surface of the block body; the sharpening assembly is assembled on the block body. The utility model provides an in-process that the sewing machine presser foot was using, two whetstones can compress tightly the cutting edge department that cuts off the blade to the processing of polishing is located to the cutting edge that cuts off the blade, guarantees the sharpness that cuts off blade cutting edge department, guarantees to cut off the effect of cutting off of blade to the end of a thread, need not frequent change and cuts off the blade, and convenient to use reduces the use cost of presser foot.

Description

Presser foot mechanism of sewing machine

Technical Field

The utility model relates to a sewing machine presser foot technical field especially relates to a sewing machine presser foot mechanism.

Background

The sewing machine presser foot is an essential part in a feeding mechanism of the sewing machine, and various forms of sewing machine presser feet play an important role in the production process, such as the sewing machine presser foot special for stitching open threads, concealed zippers, the sewing machine presser foot for ruffling and the like, and the selection of different sewing machine presser feet in different sewing operations is very important.

The utility model discloses a chinese utility model granted patent that publication number is CN205000095U an automatic tangent line is flat presser foot for sewing machine, aim at solving current flat presser foot and need artifical cut off facial line and bottom line to arouse the different and waste time's of end of a thread length technical problem, this automatic tangent line is flat presser foot for sewing machine need not manual operation, the length of each end of a thread equals, save time, high production efficiency, but, above-mentioned technical scheme is at the in-process of long-time use, the easy blunting of sawtooth portion of cutter, make the unable smooth cut off end of a thread of sawtooth portion, need regularly change the cutter, not only the operation is inconvenient, and can improve the use cost of presser foot, so, need design a sewing machine presser foot mechanism to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a presser foot mechanism of a sewing machine.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a sewing machine presser foot mechanism, is in including presser foot board and assembly the detachable hood on presser foot board top, it is equipped with the cutting blade still to slide on the presser foot board, still includes:

the block body is fixedly connected to the foot pressing plate;

the through hole penetrates through the side surface of the block body;

and the knife sharpening assembly is assembled on the block body.

As a preferred technical scheme of the utility model, the sharpening assembly includes:

the two knife grindstones are assembled in the through hole in a sliding mode;

the two notches are respectively arranged at the mutually close edges of the two knife grindstones;

the two elastic pressing sheets are fixedly connected to the inner top surface and the inner bottom surface of the through hole respectively, and the two elastic pressing sheets are abutted against the two knife stones respectively;

the knife stone is assembled in the through hole through the limiting assembly.

As a preferred technical scheme of the utility model, spacing subassembly includes:

the two limiting grooves are formed in the inner surface of the through hole;

two stoppers, two the equal fixed connection of stopper is in the side of whetstone, and two stoppers slide the assembly respectively at two spacing inslots.

As a preferred technical scheme of the utility model, laminate each other between the side of stopper and the inner face of spacing groove.

As an optimized technical scheme of the utility model, the elasticity preforming is the long banding structure of thin slice, and the elasticity preforming adopts the material that can take place elastic deformation to make.

As a preferred technical scheme of the utility model, the opening is just to cutting off the blade setting.

The utility model discloses a set up block, opening, whetting a knife subassembly and spacing subassembly, under the mating reaction of block, opening, whetting a knife subassembly and spacing subassembly, the in-process that the cutting off blade cut off to the end of a thread, two whetstones can compress tightly the cutting edge department that cuts off the blade to the processing of polishing is located to the cutting edge that cuts off the blade, guarantees the sharpness that cuts off blade cutting edge department, guarantees to cut off the effect of cutting off of blade to the end of a thread, need not frequent change and cuts off the blade, high durability and convenient use reduce the use cost of presser foot.

Drawings

Fig. 1 is a schematic structural view of a presser foot mechanism of a sewing machine according to the present invention;

FIG. 2 is a cross-sectional view of a block in a presser foot mechanism of a sewing machine according to the present invention;

fig. 3 is a schematic structural view of a whetstone in the presser foot mechanism of the sewing machine of the present invention.

In the figure: the cutting tool comprises a 10 foot pressing plate, a 20 top cap, a 30 cutting blade, a 40 block body, a 50 through opening, a 60 knife sharpening assembly, a 601 knife sharpening stone, a 602 notch, a 603 elastic pressing plate, a 70 limiting assembly, a 701 limiting groove and a 702 limiting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a presser foot mechanism of a sewing machine includes a presser foot plate 10 and a detachable top cap 20 assembled on the top end of the presser foot plate 10, the specific connection mode between the top cap 20 and the presser foot plate 10 is mature prior art and is not regarded as an innovative part of the present technical solution, which is not shown in the drawings and not described herein, and a cutting blade 30 is assembled on the presser foot plate 10 in a sliding manner, and further includes:

the block body 40 is fixedly connected to the foot pressing plate 10;

the through hole 50 is formed in the side face of the block body 40 in a penetrating mode;

sharpening assembly 60, sharpening assembly 60 is assembled on block 40.

Referring to fig. 1-3, the sharpening assembly 60 includes:

the two grindstones 601 are slidably assembled in the through hole 50;

the two notches 602 are respectively arranged at the mutually close edges of the two grindstones 601, and the arrangement of the notches 602 facilitates the insertion of the cutting blade 30 between the two grindstones 601 and the mutual separation of the two grindstones 601;

the two elastic pressing sheets 603 are respectively and fixedly connected with the inner top surface and the inner bottom surface of the through hole 50, and the two elastic pressing sheets 603 are respectively abutted against the two knife stones 601;

the sharpening stone 601 is fitted in the through opening 50 by the stopper assembly 70.

Referring to fig. 1-3, the stop assembly 70 includes:

two limiting grooves 701, wherein the two limiting grooves 701 are formed in the inner surface of the through hole 50;

two stopper 702, two stopper 702 all fixed connection are in the side of whetstone 601, and two stopper 702 slide the assembly respectively in two spacing grooves 701, and the in-process that whetstone 601 was removing, spacing groove 701 and stopper 702 can play spacing and the effect of direction to the removal of whetstone 601.

Referring to fig. 1 to 3, the side surfaces of the limiting block 702 and the inner surface of the limiting groove 701 are attached to each other, so that the stability of the sharpening stone 601 in the moving process can be ensured.

Referring to fig. 1 to 3, the elastic pressing plate 603 is a thin strip structure, and the elastic pressing plate 603 is made of a material capable of generating elastic deformation.

Referring to fig. 1-3, the through opening 50 is positioned opposite the cutting blade 30 to facilitate insertion of the cutting blade 30 into the through opening 50.

The utility model discloses a concrete theory of operation as follows:

the utility model provides a sewing machine presser foot is when in actual use, when needing to cut off the end of a thread, the usable cutting blade 30 of user extrudes the end of a thread and cuts off, cutting blade 30 is at the in-process towards the end of a thread removal, cutting blade 30 can pass opening 50, and insert the breach 602 part of two whetstones 601, cutting blade 30 can extrude two whetstones 601 when inserting two breach 602, make two whetstones 601 keep away from each other, the continuation removal that cuts off blade 30 along with, two whetstones 601 can compress tightly the cutting edge department that cuts off blade 30, and the processing of polishing is located to the cutting edge of cutting blade 30, guarantee the sharpness that cuts off blade 30 cutting edge department.

The in-process that whetstone 601 removed, spacing groove 701 and stopper 702 can play spacing and the effect of direction to the removal of whetstone 601, secondly, two whetstones 601 are when keeping away from each other, two whetstones 601 can extrude two elastic pressing pieces 603, make two elastic pressing pieces 603 take place elastic deformation, under the elastic force effect of two elastic pressing pieces 603, two whetstones 601 have the trend of being close to each other all the time, and tightly push down the two sides of cutting blade 30, can guarantee the effect of polishing to cutting blade 30.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a sewing machine presser foot mechanism, is in including presser foot board (10) and assembly detachable hood (20) on presser foot board (10) top, it has cutting blade (30) still to slide to be equipped with on presser foot board (10), its characterized in that still includes:

the block body (40), the said block body (40) is fixedly connected to pressing the foot plate (10);

the through hole (50), the through hole (50) is arranged on the side surface of the block body (40) in a penetrating way;

a sharpening assembly (60), said sharpening assembly (60) being assembled on a block (40).

2. A sewing machine presser foot mechanism according to claim 1, wherein said knife sharpening assembly (60) comprises:

the two knife stones (601), and the two knife stones (601) are assembled in the through hole (50) in a sliding mode;

the two notches (602), the two notches (602) are respectively arranged at the mutually close edges of the two knife stones (601);

the two elastic pressing sheets (603) are fixedly connected to the inner top surface and the inner bottom surface of the through hole (50) respectively, and the two elastic pressing sheets (603) are abutted to the two knife stones (601) respectively;

the knife stone (601) is assembled in the through hole (50) through the limiting component (70).

3. A sewing machine presser foot mechanism according to claim 2, characterized in that said stop assembly (70) comprises:

the two limiting grooves (701) are formed in the inner surface of the through hole (50) respectively (701);

two stopper (702), two stopper (702) all fixed connection is in the side of whetstone (601), and two stopper (702) slide assembly respectively in two spacing grooves (701).

4. The presser foot mechanism of sewing machine according to claim 3, characterized in that the side of said stopper (702) is attached to the inner surface of said stopper groove (701).

5. The presser foot mechanism of a sewing machine as claimed in claim 2, wherein said elastic presser plate (603) is of a thin strip structure, and the elastic presser plate (603) is made of a material capable of elastic deformation.

6. A presser foot mechanism for sewing machines according to claim 1, wherein said through opening (50) is disposed opposite to the cutting blade (30).