CN103710894A

CN103710894A - Presser foot and sewing machine

Info

Publication number: CN103710894A
Application number: CN201310687621.7A
Authority: CN
Inventors: 吴进
Original assignee: Suzhou Meishanzi Garments Co Ltd
Current assignee: Suzhou Meishanzi Garments Co Ltd
Priority date: 2013-12-16
Filing date: 2013-12-16
Publication date: 2014-04-09
Anticipated expiration: 2033-12-16
Also published as: CN103710894B; WO2015090112A1

Abstract

The invention provides a presser foot and a sewing machine adopting the same. The presser foot comprises a press rod detachably connected with the sewing machine and a press block fixed at the lower end of the press rod, a side plate is fixed at the side edge of one side of the press block along the length direction, and a cutter guide surface extending from top to bottom is arranged on the outer side face of the side plate. A bent portion bent towards the inner side of the bottom surface of the press block is arranged at the bottom edge of the side plate, and a guide passage extending forwards and backwards along the length direction of the press block is formed between the bent portion and the press block. The sewing machine is provided with a driving shaft driving a needle bar to move up and down, a cutter which acts with the needle bar synchronously is further detachably mounted on the driving shaft, and the cutter and the cutter guide surface are matched. Compared with the prior art, when the presser foot and the sewing machine are used for sewing double-layer fabric, edges of the lower-layer fabric can be cut off simultaneously, defects of artificial clipping are avoided, production efficiency is improved, and product quality is improved.

Description

A kind of presser feet and Sewing machines

Technical field

The present invention relates to a kind of sewing-machine equipment technical field, relate in particular to a kind of for sew up double-layer cloth and excise presser feet and the Sewing machines of unnecessary lace simultaneously.

Background technology

Refer to Fig. 1, it illustrates a kind of common sewing-machine foot in prior art, and it has depression bar 1 for being removably connected with Sewing machines, is fixed on the briquetting 2 of depression bar lower end, and the slight perk in front-end and back-end of briquetting 2, so that feeding.Adopt the Sewing machines of this common presser feet, when sewing up the edge of double-layer cloth, for example upper strata is the colored type cut-parts that edge has special colored tooth, when lower floor is lace grenadine, the edge of lower floor's lace grenadine need to exceed colored type cut-parts, after sewing up along the colored tooth edge of flower type cut-parts by presser feet, the unnecessary lace grenadine in edge needs manual pruning to remove, not only waste time and energy, and clip flatness is coarse inhomogeneous after pruning, the double-layer cloth after sewing up will have a strong impact on product appearance after for example, making for ready-made clothes (brassiere underwear, underpants).

Summary of the invention

In order to overcome the defect of above-mentioned prior art, the object of this invention is to provide a kind of for sewing up double-layer cloth and can fitly excising presser feet and the Sewing machines of unnecessary lace.

For achieving the above object, the present invention by the following technical solutions:

A kind of presser feet, comprise the depression bar removably connecting with Sewing machines, the briquetting that is fixed on described depression bar lower end, it is characterized in that: a side side of described briquetting is fixed with side plate along its length, the lateral surface of described side plate has the cutting knife spigot surface extending from top to bottom; The bottom margin of described side plate has to the kink of lateral buckling in the bottom surface of described briquetting, forms along the guiding channel extending before and after the length direction of described briquetting between described kink and the bottom surface of described briquetting.

Preferably, the groove that the part of the corresponding described guiding channel in the bottom surface of described briquetting is extended before and after having along its length, described bending part is in described groove.

More preferably, the bottom surface of a little higher than described briquetting in bottom surface of described kink.The difference in height of the bottom surface of described kink and the bottom surface of described briquetting is less than or equal to 1mm.

In one embodiment, the front portion of described briquetting has the arc transiting surface that the opposite side side from described guiding channel front end to described briquetting extends.

Wherein, the rear and front end of described side plate has respectively a connecting portion being fixedly connected with described briquetting.Described connecting portion and described briquetting are by being welded to connect.

The present invention also provides a kind of Sewing machines that adopts above-mentioned presser feet, described Sewing machines has the driving shaft that drives needle bar to move up and down, it is characterized in that: the cutting knife with described needle bar synchronization action is also removably installed on described driving shaft, and described cutting knife matches with described cutting knife spigot surface.

Compared to prior art, the present invention has the following advantages: while adopting the Sewing machines with presser feet to carry out sewing up of double-layer cloth, kink by side plate is separated upper strata flower type cut-parts and lower floor's lace grenadine, upper strata flower type cut-parts are by the guiding channel feeding of presser feet, lower floor's lace grenadine is from the kink bottom surface feeding of presser feet bottom surface and side plate, while sewing up, by cutting knife, with needle bar, synchronously moved up and down, cutting knife cuts downwards the unnecessary edge excision of lower floor's lace grenadine along the cutting knife spigot surface of side plate, guarantees that otch is smooth, smoother; And presser feet can prevent that cutting knife from damaging the colored tooth of upper strata flower type cut-parts, guarantees that sewing up rear double-layer cloth has uniform seam; Use presser feet of the present invention and Sewing machines, greatly improved production efficiency, alleviated the labour intensity causing because of manual pruning, improved the inhomogeneous problem of colored sheet edge clip that handwork causes.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of common presser feet of prior art.

Fig. 2 is the stereogram of presser feet of the present invention when the first visual angle.

Fig. 3 is the stereogram of presser feet of the present invention when second group of visual angle.

Fig. 4 is the front view of presser feet of the present invention.

Fig. 5 is the upward view of presser feet of the present invention.

Fig. 6 is the work schematic diagram of presser feet of the present invention during for Sewing machines.

The specific embodiment

Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is elaborated.

Refer to Fig. 1 to Fig. 5, a kind of presser feet, comprise the depression bar 10 removably connecting with Sewing machines, the briquetting 20 that is fixed on depression bar 10 lower ends, a side side of briquetting 20 is fixed with side plate 30 along its length, and the lateral surface of side plate 30 has the cutting knife spigot surface 31 extending from top to bottom; The bottom margin of side plate 30 has to the kink 32 of lateral buckling in the bottom surface of described briquetting, forms along the guiding channel 40 extending before and after the length direction of briquetting 20 between kink 32 and the bottom surface of briquetting 20.The groove 21 that the part of the corresponding guiding channel 40 in bottom surface of briquetting 20 is extended before and after having along its length, kink 32 is positioned at groove 21.The bottom surface of a little higher than briquetting 20 in bottom surface of kink 32, when side plate 30 is installed, the difference in height of the bottom surface of the bottom surface of kink 31 and briquetting 20 is less than or equal to 1mm.

In the present embodiment, the front portion of briquetting 20 has the arc transiting surface 22 that opposite side side from from guiding channel 40 front ends to briquetting 20 extends, so that while starting to sew up, the colored tooth of upper strata flower type cut-parts is put into guiding channel 40.

The front end of side plate 30 has front connecting portion 33, and front connecting portion 33 is welded on the front end upper surface of briquetting 20.The rear end of side plate 30 has rear connecting portion 34, and rear connecting portion 34 is welded on the rear end upper surface of briquetting 20.

As shown in Figure 5, in the present embodiment, the kink 31 of side plate 30 is greater than rear portion width along the length direction upper forepart width of briquetting 20.The curved transition of forward edge of kink 31.

Refer to Fig. 6, the present invention also provides a kind of Sewing machines that adopts above-mentioned presser feet, described Sewing machines has the driving shaft (not shown) that drives needle bar to move up and down, cutting knife 50 with described needle bar synchronization action is also removably installed on described driving shaft, and cutting knife 50 matches with the cutting knife spigot surface 31 of side plate 30.

When the double-layer cloth 60 that this use in sewing machine is lace grenadine 62 in upper strata for flower type cut-parts 61He lower floor sews up; kink 32 by side plate 30 is separated flower type cut-parts 61 and lace grenadine 62; the edge of the colored type cut-parts 61 on upper strata is by guiding channel 40 feedings of presser feet; flower tooth is protected under the stopping of side plate 30, avoids being cut to by cutting knife 50.The lace grenadine 60 of lower floor is from the bottom surface feeding of the bottom surface of briquetting 20 and the kink 32 of side plate 30, while sewing up by cutting knife 50 with needle bar synchronously move up and down (direction of arrow in Fig. 6), when cutting knife 50 cuts downwards along the cutting knife spigot surface 31 of side plate 30, unnecessary edge excision by the lace grenadine 62 of lower floor, makes otch smooth, smoother.

Adopt presser feet of the present invention and Sewing machines, greatly improved production efficiency, alleviated the labour intensity of manual pruning, and improved inhomogeneous, the irregular defect in lace edge that handwork causes.

Above-described embodiment is only explanation technical conceive of the present invention and feature; its object is to allow person skilled in the art can understand content of the present invention and implement according to this; can not limit the scope of the invention with this; all equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.

Claims

1. a presser feet, comprise the depression bar removably connecting with Sewing machines, the briquetting that is fixed on described depression bar lower end, it is characterized in that: a side side of described briquetting is fixed with side plate along its length, the lateral surface of described side plate has the cutting knife spigot surface extending from top to bottom; The bottom margin of described side plate has to the kink of lateral buckling in the bottom surface of described briquetting, forms along the guiding channel extending before and after the length direction of described briquetting between described kink and the bottom surface of described briquetting.

2. a kind of presser feet according to claim 1, is characterized in that: the groove that the part of the corresponding described guiding channel in bottom surface of described briquetting is extended before and after having along its length, described bending part is in described groove.

3. a kind of presser feet according to claim 2, is characterized in that: the bottom surface of a little higher than described briquetting in bottom surface of described kink.

4. a kind of presser feet according to claim 3, is characterized in that: the difference in height of the bottom surface of described kink and the bottom surface of described briquetting is less than or equal to 1mm.

5. according to a kind of presser feet described in claim 1 to 4 any one, it is characterized in that: the front portion of described briquetting has the arc transiting surface that the opposite side side from described guiding channel front end to described briquetting extends.

6. according to a kind of presser feet described in claim 1 to 4 any one, it is characterized in that: the rear and front end of described side plate has respectively a connecting portion being fixedly connected with described briquetting.

7. a kind of presser feet according to claim 6, is characterized in that: described connecting portion and described briquetting are by being welded to connect.

8. adopt a Sewing machines for presser feet claimed in claim 1, described Sewing machines has the driving shaft that drives needle bar to move up and down, and it is characterized in that: cutting knife is also removably installed on described driving shaft, and described cutting knife matches with described cutting knife spigot surface.