CN218861069U

CN218861069U - Overlock presser foot and sewing equipment with same

Info

Publication number: CN218861069U
Application number: CN202222853207.6U
Authority: CN
Inventors: 易朝德
Original assignee: Shanghai Nippon Zhimei Garment Manufacturing Co ltd
Current assignee: Shanghai Nippon Zhimei Garment Manufacturing Co ltd
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-04-14
Anticipated expiration: 2032-10-27

Abstract

The utility model discloses a overlock presser foot and sewing equipment who has this overlock presser foot, should overlock the presser foot and be applied to sewing equipment on, should overlock the presser foot including fixed part and the presser foot bottom plate that is connected with fixed part, the presser foot bottom plate includes first end and second end, first end is used for letting in the cloth that accompanies the cotton rope. The presser foot bottom plate has the recess that runs through its second end terminal surface, the second end is used for leading through the double-layered cotton rope cloth after the bind off is accomplished, when carrying out the bind off to the cloth that presss from both sides behind the cotton rope, this recess can hold cotton rope and the hunch portion of cloth parcel outside the cotton rope, thereby make the part that cotton rope and cloth arch can laminate with the presser foot bottom plate, and then make and can not appear the clearance between bind off presser foot and the sewing machine desktop, make the bind off presser foot can place steadily on sewing machine's desktop, reduce the bind off degree of difficulty, also can improve the quality of bind off.

Description

Overlock presser foot and sewing equipment with same

Technical Field

The utility model relates to a sewing processing technology field especially relates to a overlock presser foot and have sewing equipment of this overlock presser foot.

Background

In the process of making clothes, in order to improve the appearance decoration of the clothes, cotton rope clamping and overlocking treatment is often performed at the splicing position of clothes cloth, that is, one cotton rope is clamped at the edge of the cloth at the splicing position, and one side of the cotton rope is overlocked. However, because the thickness of cotton rope is usually thicker for the concatenation department of cloth can arch, leads to when overlocking, has the clearance between overlock presser foot and sewing machine's the desktop, makes overlock presser foot can't place sewing machine steadily on the desktop, is difficult to compress tightly the cloth, leads to the sewing degree of difficulty increase, and influences the quality of overlock easily.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model discloses overlock presser foot and have sewing machine of this overlock presser foot, this overlock presser foot can be placed on sewing machine's desktop steadily, can reduce the sewing degree of difficulty of overlock behind the realization double-layered cotton rope, and is favorable to improving the quality of overlock.

First aspect, the utility model discloses a presser foot of borduring should include:

a fixing member for mounting and fixing to the sewing apparatus;

the presser foot bottom plate is connected with the fixing component and comprises a first end and a second end along the sewing direction, the first end is used for leading in cloth clamped with a cotton rope, and the second end is used for leading out the cloth after overlocking;

the presser foot base plate has a placement bottom surface connected to the first end and the second end, the placement bottom surface is recessed in the presser foot base plate to form a groove, the groove penetrates through the end surface of the second end, and the groove is used for accommodating the cotton rope and an arched part of the cloth wrapped outside the cotton rope.

As an optional implementation manner, in an embodiment of the present invention, the overlock presser further includes a needle position plate, the needle position plate is connected to the presser foot base plate and forms a sewing space with the presser foot base plate, and the needle position plate is disposed near the groove.

As an optional implementation manner, in an embodiment of the present invention, the needle position plate includes a connecting portion and a sewing portion, the connecting portion is connected to the presser foot base plate, and the sewing portion is connected to the connecting portion at an angle and has a gap with the presser foot base plate, so that the sewing space is formed among the connecting portion, the sewing portion and the presser foot base plate.

As an optional implementation manner, in an embodiment of the present invention, the needle position plate is provided with a first connecting through hole, the presser foot bottom plate is provided with a second connecting through hole, at least one of the first connecting through hole and the second connecting through hole is a bar-shaped through hole, and the first connecting through hole is connected with the second connecting through hole through a first fastener, so as to realize the connection between the needle position plate and the presser foot bottom plate.

As an optional implementation manner, in an embodiment of the present invention, the overlock presser foot further includes a connecting plate, the fixing member is provided with a fastening groove, the fastening groove extends along a width direction of the presser foot bottom plate, one end of the connecting plate is convexly provided with a protruding block, and the protruding block is fastened in the fastening groove, so that the connecting plate is connected with the fixing member;

the other end of the connecting plate is provided with a third connecting through hole, and the first fastener sequentially penetrates through the third connecting through hole, the first connecting through hole and the second connecting through hole so as to enable the connecting plate to be connected with the presser foot bottom plate.

As an optional implementation manner, in an embodiment of the present invention, the overlock presser foot further includes an extension plate, the extension plate is connected to the second end of the presser foot bottom plate, and the second end is used for abutting against the cloth after overlock.

As an optional implementation manner, in an embodiment of the present invention, the extension plate is provided with a fourth connecting through hole, the presser foot bottom plate is provided with a fifth connecting through hole, at least one of the fourth connecting through hole and the fifth connecting through hole is a bar-shaped through hole, and the fourth connecting through hole is connected with the fifth connecting through hole through a second fastener, so as to realize the connection between the extension plate and the presser foot bottom plate.

As an optional implementation manner, in an embodiment of the present invention, the overlock presser further includes a pressing member, the pressing member is connected to the presser foot base plate, the pressing member is disposed near the first end, and the pressing member protrudes from the presser foot base plate along a width direction portion of the presser foot base plate, and the pressing member is configured to keep smooth the cloth introduced from the first end.

As an optional implementation mode, in the embodiment of the utility model, the presser foot bottom plate still is equipped with dodges the recess, dodge the recess be used for the sewing machine needle provides dodges the space.

In a second aspect, the present invention also provides a sewing apparatus, comprising:

a sewing machine; and

and a presser foot as described above in the first aspect, wherein the fixing member of the presser foot is fixed to the sewing machine.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the embodiment of the utility model provides a pair of overlock presser foot, when overlock the cloth after pressing from both sides the cotton rope, the presser foot bottom plate has the recess that runs through its second end terminal surface, the second end is used for leading through the double-layered cotton rope cloth after the overlock is accomplished, this recess can hold cotton rope and the hunch part of cloth parcel outside the cotton rope, thereby make the part that the surface fabric hunches can laminate with the presser foot bottom plate, and then make clearance can not appear between overlock presser foot and the sewing machine desktop, make the overlock presser foot can place on sewing machine's desktop steadily, be favorable to overlock the cloth after pressing from both sides the cotton rope when overlock, make things convenient for sewing personnel to overlock the sewing, also be favorable to improving the quality of overlock. Therefore, the overlock presser foot can reduce sewing difficulty of overlock after cotton rope clamping, facilitates sewing, and is beneficial to improving clothes quality.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments are briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the operation of cotton rope and overlock of the cloth clip disclosed in the embodiment of the present invention;

fig. 2 is a schematic bottom view of a overlock presser foot disclosed in the embodiment of the present invention;

fig. 3 is a schematic top view of a binding foot according to the embodiment of the present invention;

fig. 4 is a schematic side view of the binding-off presser foot disclosed in the embodiment of the present invention.

An icon: 100. a overlock presser foot; 1. a fixing member; 11. clamping the groove; 2. a presser foot base plate; 2a, a first end; 2b, a second end; 2c, placing the bottom surface; 2d, a groove; 21. a second connecting through hole; 22. a fifth connecting through hole; 23. avoiding the groove; 3. a needle position plate; 3a, sewing space; 31. a connecting portion; 32. a sewing part; 33. a first connecting through hole; 4. a connecting plate; 41. a third connecting through hole; 42. a bump; 5. an extension plate; 51. a fourth connecting through hole; 6. a pressing member; 7. a first cut piece; 7a, wrapping cloth; 8. a second cut piece; 9. a cotton rope; 10. and (5) serging the coil.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in the present invention can be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

The technical solution of the present invention will be further described with reference to the following examples and drawings.

The embodiment of the application provides a overlock presser foot is applied to sewing equipment to be used for overlock the cloth after pressing from both sides the cotton rope, that is to say, as shown in fig. 1, when actually sewing, press from both sides cotton rope 9 to the cloth earlier and handle, then utilize the overlock presser foot that this application provided to overlock the cloth, specifically can be: first, the first cut piece 7 is placed on a table top of a sewing machine in an upward mode, the side edge of the first cut piece 7 is folded inwards to form a wrapping cloth 7a, then a cotton rope 9 is inserted into the hollow portion of the wrapping cloth 7a, then the second cut piece 8 is placed on the first cut piece 7 with the cotton rope 9 sandwiched, the side edge of the second cut piece 8 is aligned with the side edge of the first cut piece 7, the wrapping cloth 7a and the cotton rope 9 are clamped between the first cut piece 7 and the second cut piece 8, and finally the side edge is trimmed through a trimming presser foot of the sewing machine (such as a trimming machine) to obtain a trimming coil 10. The embodiment of the utility model provides an embodiment the cloth include first cut-parts 7 and second cut-parts 8, also can be for other need carry out the cloth of pressing from both sides other types that cotton rope overlock was sewed.

Referring to fig. 2 and 3, a binding presser foot 100 according to an embodiment of the present invention includes a fixing member 1 and a presser foot base plate 2, where the fixing member 1 is used for being fixed to a sewing machine; the presser foot bottom plate 2 is connected with the fixing component 1, the presser foot bottom plate 2 comprises a first end 2a and a second end 2b along the sewing direction (X-Y direction shown in figures 2 and 3), the first end 2a is used for leading in the cloth clamped with the cotton rope 9, and the second end 2b is used for leading out the cloth after overlocking; the presser foot bottom plate 2 has a placing bottom surface 2c connected to the first end 2a and the second end 2b, the placing bottom surface 2c is recessed in the presser foot bottom plate 2 to form a groove 2d, the groove 2d penetrates through the end surface of the second end 2b, the groove 2d can be used for accommodating a cotton rope 9 clamped in a cloth and an arch part of the cloth wrapped outside the cotton rope 9, so that when the overlock is placed above the cloth clamped with the cotton rope 9, the arch part of the cotton rope 9 and the cloth is introduced into the groove 2d through the first end 2a and is discharged through the second end 2b, so that the arch part of the cotton rope 9 and the cloth can be embedded into the groove 2d, the presser foot bottom plate 2 can be tightly attached to the arch part of the cotton rope 9 and the cloth, and the presser foot bottom plate 2 can be stably placed on a desktop of the sewing machine. Through setting up recess 2d that runs through second end 2b, can make things convenient for sewing personnel to carry out the serging sewing, and then improve the quality of serging coil 10.

In some embodiments, in general, the sum of the thicknesses of the cotton string 9 and the cloth bulge in the depth direction of the groove 2d is generally 0.1cm to 0.5cm, and the sum of the widths of the cotton string 9 and the cloth bulge in the first direction is generally 0.1cm to 0.5cm, wherein the first direction is arranged in a direction perpendicular to the depth direction of the groove 2d and perpendicular to the sewing direction, such as the a-B direction shown in fig. 2. In order to enable the groove 2d to accommodate the string 9 and the arching portion of the cloth, the depth of the groove 2d may be 0.1cm to 0.5cm, for example, 0.1cm, 0.2cm, 0.3cm, 0.4cm, 0.5cm, or the like, and the width of the groove 2d in the first direction may be 0.1cm to 0.5cm, for example, 0.1cm, 0.2cm, 0.3cm, 0.4cm, 0.5cm, or the like. When the width and the degree of depth of recess 2d were less than 0.1cm, the hunch portion of cotton rope 9 and cloth can't be held completely to recess 2d, and recess 2d can't realize the laminating with the outside cloth hunch portion of cotton rope 9, and overlock presser foot 100 has the clearance with the desktop of sewing machine, can't place on the desktop steadily, influences the sewing. When the depth of recess 2d is wider than 0.5cm, the width of recess 2d is greater than the width of cotton rope 9 and cloth hunch portion for have great space between cotton rope 9 and the cloth hunch portion and the recess 2d, the cell wall of recess 2d can't provide clamping force to cotton rope and cloth hunch portion, makes the easy appearance of slip displacement of cotton rope 9 and cloth hunch portion in recess 2d, influences the quality of binding off.

In some embodiments, the serging presser foot 100 further comprises a needle position plate 3, the needle position plate 3 is connected to the presser foot base plate 2 and forms a sewing space 3a with the presser foot base plate 2, and the needle position plate 3 is disposed near the groove 2 d. Thus, the needle position plate 3 can be used to match with the sewing machine needle to sew a designated overlock thread type. As described above, after the cotton rope 9 is clamped by the cloth, the overlock sewing needs to be carried out on one side close to the cotton rope 9, so that the cotton rope 9 is fixed in the cloth, and the cotton rope 9 is prevented from being separated from the cloth. Therefore, after the cloth with the cotton string 9 is passed from the first end 2a into the presser foot base plate 2, the sewing operation needs to be completed in the needle position plate 3. A sewing space 3a is formed between the presser foot base plate 2 and the needle position plate 3 for a sewing machine needle to penetrate through, and the width of the sewing space 3a is approximately the same as the binding width, so that the sewing machine needle can sew a binding coil 10 with a certain width and a certain line type on a cloth. The needle position plate 3 is close to the groove 2d, so that the distance between the needle position plate 3 and the groove 2d is small, a sewing machine needle can be located on one side of the cloth with the cotton rope 9 clamped, sewing is facilitated, and the cotton rope 9 can be sewn in the cloth more tightly.

In some embodiments, the needle position plate 3 includes a connecting portion 31 and a sewing portion 32, the connecting portion 31 is connected to the presser foot base plate 2, and the sewing portion 32 is connected to the connecting portion 31 at an angle with a gap from the presser foot base plate 2, so that the sewing space 3a is formed between the connecting portion 31, the sewing portion 32 and the presser foot base plate 2. Illustratively, as shown in fig. 3, the connecting portion 31 has a first protruding portion protruding from one side of the presser foot base plate 2, the sewing portion 32 is connected to the first protruding portion of the connecting portion 31 at an angle, and a sewing space 3a for hemming is formed among the first protruding portion of the connecting portion 31, the sewing portion 32 and the presser foot base plate 2, and the sewing space 3a is used for a sewing needle to pass through. The additional attachment portion 31 can provide a sewing movement space for the sewing machine needle, so that a bind-off having a certain width can be formed.

In some embodiments, the needle position plate 3 is provided with a first connecting through hole 33, the presser foot base plate 2 is provided with a second connecting through hole 21, and at least one of the first connecting through hole 33 and the second connecting through hole 21 is a strip-shaped through hole, that is, only the first connecting through hole 33 may be a strip-shaped through hole, or only the second connecting through hole 21 may be a strip-shaped through hole, or both the first connecting through hole 33 and the second connecting through hole 21 may be strip-shaped through holes, and the first connecting through hole 33 is connected with the second connecting through hole 21 through a first fastener, so as to realize the connection between the needle position plate 3 and the presser foot base plate 2. Wherein, the first fastener can be a bolt, a screw, etc. Since the first connecting through hole 33 and the second connecting through hole 21 are connected by bolts, screws and the like, the connection between the first connecting through hole 33 and the second connecting through hole 21 is detachable, and since at least one of the first connecting through hole 33 and the second connecting through hole 21 is a strip-shaped through hole, when the first fastener is screwed, the position of the needle position plate 3 relative to the presser foot base plate 2 can be adjusted, in the process, the first connecting through hole 33 and the second connecting through hole 21 are partially opposite all the time, so that after the position of the needle position plate 3 relative to the presser foot base plate 2 is adjusted, the first connecting through hole 33 and the second connecting through hole 21 can still be fixedly connected by screwing the first fastener. Therefore, according to the sewing machine, at least one of the first connecting through hole 33 and the second connecting through hole 21 is designed to be the strip-shaped through hole, the position of the needle position plate 3 relative to the presser foot base plate 2 can be adjusted, the size of the sewing space can be adjusted, and therefore the overloads with different widths can be sewn according to actual overloads.

Illustratively, the first connecting via 33 may be a transverse bar-shaped via, and the second connecting via may be a circular via, and the transverse length of the first connecting via is greater than the diameter of the second connecting via, wherein the transverse direction may be a-B direction as shown in fig. 3, the a direction being a left direction, and the B direction being a right direction. When the overlock with larger width needs to be overlocked, the sewing space which needs to be provided at the moment is correspondingly increased, the first fastener is unscrewed, the needle position plate 3 moves rightwards to the right target position, so that the first connecting through hole 33 moves rightwards relative to the second connecting through hole 21, the first fastener is screwed, the needle position plate 3 is fixed on the right target position, and therefore the needle position plate 3 moves rightwards to be adjusted. Further, when the overlock is required to be overlock to overlock a narrow overlock, the sewing space required to be provided at this time is also reduced correspondingly, the first fastening member is loosened, the needle plate 3 is moved leftward to a left target position, so that the first connecting through hole 33 moves leftward relative to the second connecting through hole 21, the first fastening member is tightened, and the needle plate 3 is fixed at the left target position, thereby realizing leftward movement adjustment of the needle plate 3, and in addition, the second connecting through hole 21 of the presser foot base plate 2 is provided as a strip-shaped through hole, and the position of the needle plate 3 relative to the presser foot base plate 2 can also be adjusted by referring to the above moving manner.

In some embodiments, referring to fig. 4, the overlock presser 100 further includes a connecting plate 4, the fixing member 1 is provided with a fastening groove 11, the fastening groove 11 extends along the width direction of the presser base plate 2, one end of the connecting plate 4 is provided with a protruding block 42 in a protruding manner, and the protruding block 42 is fastened in the fastening groove 11, so that the connecting plate 4 is connected with the fixing member 1; the other end of the connecting plate 4 is provided with a third connecting through hole 41, and the first fastener sequentially penetrates through the third connecting through hole 41, the first connecting through hole 33 and the second connecting through hole 21 so as to connect the connecting plate 4 with the presser foot bottom plate 2. Normally, the upper end of the fixing component is connected with the sewing equipment, the lower end of the fixing component is connected with the presser foot bottom plate, the fixing component 1 is generally designed to be large at the upper end and small at the lower end, and parts such as screw holes and the like are difficult to be installed in a small structural space at the lower end of the fixing component and are directly connected with the presser foot bottom plate 2. Therefore, in order to facilitate the assembly and disassembly of the fixing member 1, the connecting plate 4 connected to the presser foot base plate 2 is additionally provided, and the projection 42 on the connecting plate 4 can abut against the engaging groove 11 of the presser fixing member, thereby indirectly realizing the connection between the fixing member 1 and the presser foot base plate 2. When it is necessary to detach the fixing member 1, the connecting plate 4 is detached so that the projection 42 is separated from the engaging groove 11, and the connecting plate 4 no longer abuts against the fixing member 1, whereby the fixing member 1 can be detached. The connecting plate 4 is stacked above the needle position plate 3, the needle position plate 3 is located above the presser foot bottom plate 2, the connecting plate 4 and the needle position plate 3 share the same first fastening piece to be fixed with the presser foot bottom plate 2, the use of parts can be reduced, and the structure of the overlock presser foot 100 is more compact. Further, the third connecting through hole 41 may be a strip-shaped through hole, and the connecting plate 4 may be connected to different positions of the presser foot base plate 2 by adjusting the position of the first fastening member penetrating through the third connecting through hole 41, and the fixing member 1 may be abutted to different positions on the presser foot base plate 2.

In some embodiments, the overlock presser 100 further comprises an extension plate 5, the extension plate 5 is connected to the second end 2b of the presser base plate 2, and the second end 2b is used for abutting against the overlock cloth so as to prevent the overlock cloth from tilting, thereby ensuring the flatness of the overlock cloth. Known by the preamble, the second end 2b will extend the board 5 and set up the second end 2b at presser foot bottom plate 2 for the one end of the cloth that the sewing of overlocking presser foot 100 output overlocking accomplished for the cloth after the overlocking can be compressed tightly by extension board 5 butt after second end 2b leads out, avoids the cloth perk after the overlocking, thereby guarantees the roughness of the cloth after the overlocking. In addition, as shown in fig. 4, the presser foot base plate 2 is a base plate structure with a certain thickness, the extension plate 5 is connected to the upper surface of the presser foot base plate 2 deviating from the placement bottom surface 2c, and the end of the extension plate 5 connected with the presser foot base plate 2 is lifted upwards and extended along the sewing direction, so that a certain space gap is formed between the whole extension plate 5 and the cloth below the presser foot base plate 2, and thus the cloth can be prevented from being curled and the accumulation of the cloth after being hemmed at the second end 2b can be avoided.

Specifically, the extension plate 5 has a second protruding portion protruding from one side of the presser foot base plate 2, and the position of the second protruding portion corresponds to the position of the needle position plate 3, where "correspond" can be understood as: the width of the second protruding part of the extension plate 5 relative to the presser foot bottom plate 2 is approximately the same as the width of the sewing space 3a formed by the needle position plate 3 and the presser foot bottom plate 2, so that the cloth passing through the sewing space 3a after the overlock sewing is completed can directly pass into the second protruding part of the extension plate 5, the second protruding part of the extension plate 5 can perform the abutting and pressing effect on the cloth conveyed out from the second protruding part, and the cloth after the overlock is completed is prevented from curling and tilting.

Further, the extending plate 5 is provided with a fourth connecting through hole 51, the presser foot base plate 2 is provided with a fifth connecting through hole 22, at least one of the fourth connecting through hole 51 and the fifth connecting through hole 22 is a strip-shaped through hole, and the fourth connecting through hole 51 is connected with the fifth connecting through hole 22 through a second fastening member, so as to realize the connection between the extending plate 5 and the presser foot base plate 2. That is, only the fourth connecting through hole 51 may be a strip-shaped through hole, or only the fifth connecting through hole 22 may be a strip-shaped through hole, or both the fourth connecting through hole 51 and the fifth connecting through hole 22 may be strip-shaped through holes, and the fourth connecting through hole 51 is connected to the fifth connecting through hole 22 through a second fastening member, so as to realize the connection between the extending plate 5 and the presser foot base plate 2. Wherein, the second fastener can be a bolt, a screw, etc. Since the fourth connecting through hole 51 and the fifth connecting through hole 22 are connected by bolts, screws, etc., the connection between the fourth connecting through hole 51 and the fifth connecting through hole 22 is detachable, and since at least one of the fourth connecting through hole 51 and the fifth connecting through hole 22 is a strip-shaped through hole, when the second fastener is screwed, the position of the extending plate 5 relative to the presser foot base plate 2 can be adjusted, in this process, the fourth connecting through hole 51 and the fifth connecting through hole 22 are always partially opposite, so that after the position of the extending plate 5 relative to the presser foot base plate 2 is adjusted, the fourth connecting through hole 51 and the fifth connecting through hole 22 can still be fixedly connected by screwing the second fastener. It can be seen that the present application can adjust the position of the extending plate 5 relative to the presser foot base plate 2 by designing at least one of the fourth connecting through-hole 51 and the fifth connecting through-hole 22 as a bar-shaped through-hole.

As can be seen from the foregoing, in the present invention, the relative position of the needle position plate 3 with respect to the presser foot base plate 2 can be adjusted, and if the needle position plate 3 moves and the extension plate 5 does not move, the cloth whose overlock is passed through the sewing space 3a will not be pressed by the second protruding portion of the extension plate 5, and the cloth will curl and tilt at this time. Therefore, when the binding width and hence the left-right position of the needle position plate 3 need to be adjusted, the left-right connecting position of the extension plate 5 also needs to be changed so that the second projecting portion can be kept in correspondence with the position of the needle position plate 3. Illustratively, when the fourth connecting through hole 51 is provided on the extension plate 5, the fourth connecting through hole 51 may also be a transverse strip-shaped through hole, the fifth connecting through hole 22 may be a circular through hole, and the transverse length of the fourth connecting through hole 51 is greater than the diameter of the fifth connecting through hole 22, and the transverse direction is also the direction a-B as shown in fig. 3, the direction a is the left direction, and the direction B is the right direction. When the overlock is required to overlock a overlock with a larger width, the sewing space 3a required to be provided at this time is also increased correspondingly, the needle position plate 3 is moved rightwards, and the corresponding extension plate 5 is also required to move rightwards. At this time, the second fastener is loosened, the extension plate 5 is moved rightward to a target position on the right corresponding to the position of the needle position plate 3, so that the fourth connecting through hole 51 is moved rightward relative to the fifth connecting through hole 22, and the second fastener is tightened to fix the extension plate 5 at the target position on the right, thereby achieving rightward movement adjustment of the extension plate 5. Further, when the overlock is required to overlock a overlock width, the sewing space 3a to be provided is also reduced correspondingly, the needle position plate 3 is moved leftward, the corresponding extension plate 5 is also moved leftward correspondingly, the second fastening member is loosened, the extension plate 5 is moved leftward to a left target position corresponding to the needle position plate 3, so that the fourth connecting through hole 51 is moved leftward relative to the fifth connecting through hole 22, the second fastening member is tightened, the extension plate 5 is fixed at the left target position, and therefore leftward movement adjustment of the extension plate 5 is achieved.

In some embodiments, the overlock presser 100 further comprises a pressing member 6, the pressing member 6 is connected to the presser base plate 2, the pressing member 6 is disposed near the first end 2a, and the pressing member 6 protrudes from the presser base plate 2 along the width direction of the presser base plate 2, and the pressing member 6 is used for keeping the cloth fed from the first end 2a smooth. The width of the part of the pressing piece 6 protruding out of the presser foot base plate 2 is at least wider than the binding width of the cloth, and the pressing piece 6 is arranged on the presser foot base plate 2 and has a small distance with the table top of the sewing machine. Through addding the piece 6 that compresses tightly to make the width direction part that compresses tightly 6 edge presser foot bottom plate 2 stick out in presser foot bottom plate 2, in order to utilize the piece 6 that compresses tightly to bulge presser foot bottom plate 2 partly flatten the cloth, make the cloth can smooth-going accomplish the sewing in letting in sewing space 3a, avoid the cloth to curl the perk.

In some embodiments, the presser foot base plate 2 is further provided with an avoiding groove 23, and the avoiding groove 23 is used for providing an avoiding space for the sewing machine needle. It can be understood that can set up horizontal looper during the serging sewing, cooperation sewing machine needle forms the serging coil, for the convenience of passing of horizontal looper, need set up on presser foot bottom plate 2 and dodge recess 23, provides the space of dodging for the sewing of horizontal looper, prevents that presser foot bottom plate 2 from disturbing the sewing of horizontal looper. In addition, since the lateral looper and the sewing machine needle are simultaneously engaged to sew the cloth, the escape groove 23 needs to be provided at a side close to the sewing space 3a.

For example, referring to fig. 4, the first end 2a of the presser foot base plate 2 is of an upward bent structure, so that a certain height distance is formed between the first end 2a of the presser foot base plate 2 and the table top of the sewing machine, which facilitates the introduction of the cloth into the overlock presser foot 100 and prevents the cloth from being stacked at the first end 2 a.

The present application also provides a sewing device, which comprises a sewing machine and the overlock presser foot 100 described above, wherein the fixing component 1 of the overlock presser foot 100 is fixed on the sewing machine.

To sum up, the utility model provides a overlock presser foot 100, this overlock presser foot 100 have solved prior art and have used the overlock presser foot sewing to accompany the in-process of the cloth of cotton rope, can't steadily place the problem on the sewing machine desktop. This application is through addding recess 2d at presser foot bottom plate 2, can make cloth and the laminating of presser foot bottom plate 2 behind the clamp cotton rope to make the clearance can not appear with the sewing machine desktop in presser foot bottom plate 2, make placing that overlock presser foot 100 can be steady on the desktop, can compress tightly the cloth, reduce the sewing degree of difficulty, thereby improve the quality of overlock.

It is right above the embodiment of the utility model discloses a sewing machine that overlock presser foot and have this overlock presser foot has carried out detailed introduction, and it is right to have used specific individual example herein the utility model discloses a principle and implementation mode have been elucidated, and the description of above embodiment only is used for helping understanding the utility model discloses an overlock presser foot and sewing machine that has this overlock presser foot and core thought: meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be changes in the specific embodiments and the application range, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. The utility model provides a presser foot of overlocking, is applied to sewing machine and goes up, its characterized in that includes:

a fixing member for mounting and fixing to the sewing apparatus;

the presser foot bottom plate is connected with the fixing component and comprises a first end and a second end along the sewing direction, the first end is used for leading in cloth clamped with cotton ropes, and the second end is used for leading out the cloth after overlocking;

2. The overlock presser according to claim 1, further comprising a needle position plate attached to the presser foot base plate and forming a sewing space with the presser foot base plate, the needle position plate being disposed adjacent to the groove.

3. The serging presser foot according to claim 2, wherein the needle bed plate includes a connecting portion connected to the presser foot base plate and a sewing portion connected at an angle to the connecting portion with a gap to the presser foot base plate such that the sewing space is formed between the connecting portion, the sewing portion and the presser foot base plate.

4. The overlock presser according to claim 2, wherein the needle position plate is provided with a first connecting through hole, the presser foot base plate is provided with a second connecting through hole, at least one of the first connecting through hole and the second connecting through hole is a strip-shaped through hole, and the first connecting through hole is connected with the second connecting through hole through a first fastener to realize the connection between the needle position plate and the presser foot base plate.

5. The overlock presser according to claim 4, further comprising a connecting plate, wherein the fixing member is provided with a locking groove extending along a width direction of the presser foot base plate, and one end of the connecting plate is provided with a protruding block protruding and locked with the locking groove, so that the connecting plate is connected with the fixing member;

6. The overlock presser according to claim 1, wherein said overlock presser further comprises an extension plate, said extension plate is connected to said second end of said presser base plate, and said second end is adapted to abut against said cloth after overlock.

7. The overlock presser according to claim 6, wherein said extension plate is provided with a fourth connecting through hole, said presser foot base plate is provided with a fifth connecting through hole, at least one of said fourth connecting through hole and said fifth connecting through hole is a strip-shaped through hole, and said fourth connecting through hole is connected with said fifth connecting through hole through a second fastening member to realize the connection between said extension plate and said presser foot base plate.

8. The overlock presser according to any one of claims 1 to 7, further comprising a presser member attached to said presser foot base plate, said presser member being disposed adjacent to said first end and protruding from said presser foot base plate along a width direction portion thereof, said presser member being configured to keep the cloth fed from said first end smooth.

9. The overlock presser according to any one of claims 1 to 7, wherein the presser foot base plate is further provided with an avoidance groove for providing an avoidance space for a sewing machine needle.

10. A sewing apparatus, comprising:

a sewing machine; and

a serging presser foot as set forth in any one of claims 1 to 9, the fixing member of the serging presser foot being fixed to the sewing machine.