CN210368240U

CN210368240U - Sewing machine needle plate

Info

Publication number: CN210368240U
Application number: CN201920647309.8U
Authority: CN
Inventors: 吴新安; 吴福安
Original assignee: Beyoung & Ankai Hunan Sewing Machine Co ltd
Current assignee: Beyoung & Ankai Hunan Sewing Machine Co ltd
Priority date: 2019-05-08
Filing date: 2019-05-08
Publication date: 2020-04-21
Anticipated expiration: 2029-05-08

Abstract

The utility model discloses a sewing machine faller, including the faller body, wherein the pinhole has been seted up at faller body top, and the pay-off gear slotted hole has been seted up on the pinhole next door, is used for supplying to move the medial surface of sword rotary motion process on the faller body and is plane or curved surface, and wherein the concrete design of plane or curved surface does not cause the hindrance to be accurate with the rotatory action of moving the sword. The utility model discloses moving of automatic sewing machine thread trimming mechanism sword rotatory in order with the stationary knife cooperation thread trimming when, moving the sword rotatory smooth and easy, can not receive the hindrance, the thread trimming is effectual.

Description

Sewing machine needle plate

Technical Field

The utility model relates to a sewing machine faller belongs to sewing machine technical field.

Background

As shown in fig. 1, a needle plate of an existing automatic sewing machine is provided with a positioning groove 10 for limiting a rotating shuttle sleeve of the sewing machine. However, when the sewing machine automatically cuts thread, the movable knife rotates around the rotating shaft, passes through the inner side surface of the needle plate where the needle plate positioning groove 10 is located and then is matched with the fixed knife to complete thread cutting, and the existence of the positioning groove 10 hinders the rotary motion of the movable knife. In addition, because the existing needle plate has no separating piece between the needle hole and the feeding gear slot hole, when the needle passes through the needle hole to move up and down, the suture is easy to be hooked by the feeding gear, and the suture on the needle cannot be ensured to form a stable thread loop and be hooked by the rotating shuttle.

Disclosure of Invention

To the deficiencies existing in the prior art, the utility model aims to provide a sewing machine faller with more reasonable structural design.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a sewing machine faller, includes the faller body, wherein has seted up the pinhole on the faller body, has seted up the feeding gear slotted hole beside the pinhole, its characterized in that, the medial surface that is used for supplying to move sword rotary motion to pass through on the faller body is smooth plane or curved surface, and wherein the concrete design of plane or curved surface is with not causing the hindrance as the standard to moving the rotatory action of sword.

Preferably, the needle plate body is integrally formed with a spacer block for separating the needle hole from the feeding gear slot, the spacer block is vertically arranged, the thickness of the spacer block is designed so as not to obstruct the movement of the needle, and the length of the spacer block extending downwards is determined so as to exceed the needle point position when the needle moves to the lowest point.

Preferably, the needle plate body is integrally provided with an arc-shaped step for supporting and reinforcing, the arc-shaped surface of the arc-shaped step is matched with the arc-shaped surface of the outer side of the movable cutter, and the length and height of the arc-shaped surface of the arc-shaped step are designed based on the fact that the movable cutter does not stop rotating.

Preferably, the length of the arc-shaped step extends from one side of the needle board body to one side of the spacer block.

Preferably, the needle plate body medial surface just corresponds one side integrated into one piece of arc step and has strengthened the boss, strengthens the shape setting of boss and uses the motion that does not hinder feeding cam as the standard.

Preferably, the needle holes and the needle plate body are of an integral design.

Preferably, a split design is adopted between the needle hole and the needle plate body.

Preferably, above-mentioned split type design, the pinhole is seted up on a components of a whole that can function independently board promptly, has seted up the counter sink on the components of a whole that can function independently board, correspondingly, sets up the recess that holds components of a whole that can function independently board in the corresponding position of faller body, corresponds the counter sink position of components of a whole that can function independently board in the recess and also seted up the screw hole, fixes the components of a whole that can function independently board in the recess of faller body through the screw.

Compared with the prior art, the utility model discloses the beneficial effect who possesses is:

(1) by adopting the inner side surface (namely the inner side surface at the top of the needle plate body) of the needle plate body, through which the movable knife can rotate, as a flat plane or a curved surface, when the movable knife of the thread cutting mechanism of the automatic sewing machine rotates to be matched with the fixed knife for cutting threads, the movable knife rotates smoothly without being blocked, and the thread cutting effect is good;

(2) because the distance requirement between the machine needle and the feeding gear is smaller, the isolating block is arranged on the inner side surface of the top of the needle plate body and between the needle hole and the slotted hole of the feeding gear, the isolating block is vertically arranged up and down, and the sewing thread on the machine needle can form a stable thread loop and is hooked by the rotating shuttle in the sewing process, so that continuous and stable stitches are formed;

(3) arc steps which play a supporting and reinforcing role are integrally processed on the needle plate body and positioned on the outer side of the flat plane or curved surface, so that the movable knife guiding function can be realized, and the strength of the needle plate body can be improved;

(4) the arc-shaped steps and the reinforcing bosses are respectively arranged on the two sides of the pinhole and the feeding gear slotted hole which are arranged in parallel in the front and the back, so that the material and the cost are saved, and the strength of the needle plate is also ensured.

Drawings

FIG. 1 is a schematic view of a needle plate structure in the prior art

FIG. 2 is a schematic diagram of an external structure of the first embodiment of the present invention

FIG. 3 is a schematic diagram of an internal structure of the first embodiment of the present invention

FIG. 4 is a schematic structural diagram of a second embodiment of the present invention

FIG. 5 is an exploded view of the second embodiment of the present invention

Fig. 6 is a schematic view of a part of the thread trimming mechanism of the automatic sewing machine according to the prior art.

Detailed Description

The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should be understood, however, that the structures, proportions, and other elements described in the following examples are illustrative only and are not limiting upon the scope of the invention, which is to be given the full breadth of the appended claims and any and all equivalents thereof, which are within the scope of the following claims. Any modifications which are equivalent or similar to the embodiments of the present invention shall fall within the scope of the present invention without affecting the function and the purpose of the invention. Meanwhile, for convenience of description, the present invention adopts terms such as "upper", "lower", "inner", etc., which are not used to limit the range of the present invention, based on the orientation in practical use, and the technical content of the present invention is not substantially changed, and thus the present invention is regarded as the scope of the present invention. Adopt the utility model discloses a behind the faller, the arch 111 of rotating shuttle cover can realize spacingly through adopting the location boss 442 on moving sword 44 and the spacing lug 411 on the stationary knife seat.

Example one

As shown in fig. 2, as shown in fig. 3, the utility model discloses a sewing machine faller, including faller body 1, wherein pinhole 2 has been seted up at 1 top of faller body, pay-off gear slotted hole 3 has been seted up to 2 next doors of pinhole, adopt integral design between pinhole 2 and the faller body 1, be a whole between 2 parts of pinhole and the faller body promptly, if pinhole 2, be an integral eedle baffle 4 between the pay-off gear slotted hole 3, be used for supplying to move medial surface 1.1 (being essentially exactly faller body 1 top dorsal surface, the medial surface of eedle baffle 4 promptly) of sword rotary motion process on the faller body 1 for smooth plane or curved surface, wherein the length of plane or curved surface, the width design is with the rotatory action of moving the sword does not cause the hindrance to be accurate.

The needle plate body 1 is integrally formed with a spacing block 5 for spacing the needle hole 2 from the feeding gear slot hole 3, the spacing block 5 is vertically arranged up and down, the thickness of the spacing block 5 is designed based on the movement of the needle without being obstructed, and the length of the spacing block 5 extending downwards is based on the position of the needle point when the needle moves to the lowest point.

The needle plate body 1 is provided with arc-shaped steps 6 which play a role in supporting and reinforcing and are integrally machined on the outer side portion (specifically, the lower portion of the plane or the curved surface 1.1 in fig. 3) of the flat plane or the curved surface 1.1, the arc surface of each arc-shaped step 6 is matched with the arc surface on the outer side of the movable knife in a matching manner, the length and the height of the arc surface of each arc-shaped step 6 are both determined by taking the rotation action of the movable knife not to be blocked, and specifically, the length of each arc-shaped step extends to one side (specifically, one side close to the needle plate body) of the isolating block 5 from one side.

On needle board body 1 medial surface 1.1 and with the relative one side integrated into one piece of arc step 6 have strengthen boss 7, strengthen the shape setting of boss 7 in order not to hinder the motion of pay-off gear.

Example two

The following differences are the same as in the first embodiment:

as shown in fig. 4 and 5, a split design is adopted between the needle hole 2 and the needle plate body 1, if the needle hole 2 is provided on a split plate 8, a countersunk hole 9 is provided on the split plate 8, correspondingly, a groove 1.2 for accommodating the split plate 8 is provided on the corresponding position of the needle plate body 1, a threaded hole 12 is also provided in the groove 1.2 corresponding to the countersunk hole 9 of the split plate 8, and the split plate 8 is fastened in the groove 1.2 of the needle plate body 1 after passing through the countersunk hole 9 and the threaded hole 12 in sequence from outside to inside through a screw 11.

In addition, there are various specific implementation manners of the split design of the present application, and the second embodiment provides only a preferred implementation manner, which is not used to limit the split design, and any implementation manner that does not depart from the concept of the split design should be within the protection scope of the present application.

During operation, the moving blade 44 of the thread cutting mechanism of the automatic sewing machine in the prior art is driven by a conventional driving mechanism to rotate along the plane 1.1 of the needle plate body 1 to be far away from or close to the needle hole 2, when the needle hole 2 is close to the maximum position, the moving blade edge is matched with the fixed blade edge to realize thread cutting, and the moving blade rotates smoothly without hindrance because the plane 1.1 is flat and smooth, so that the thread cutting effect is good.

Claims

1. The utility model provides a sewing machine faller, includes the faller body, wherein the pinhole has been seted up at faller body top, and the feeding gear slotted hole has been seted up to the pinhole next door, its characterized in that, the medial surface that is used for supplying to move sword rotary motion on the faller body is smooth plane or curved surface, and wherein the concrete design of plane or curved surface is with not causing the hindrance as the standard to moving the rotatory action of sword.

2. The needle plate of sewing machine according to claim 1, wherein the needle plate body is integrally formed with a spacer for spacing the needle hole from the slot of the feed gear, the spacer is vertically arranged in the vertical direction, the thickness of the spacer is designed so as not to obstruct the movement of the needle, and the length of the spacer extending downward is determined so as to exceed the needle point position when the needle moves to the lowest point.

3. The needle plate of the sewing machine according to claim 2, wherein the needle plate body is integrally provided with an arc-shaped step for supporting and reinforcing on a flat plane or a curved surface, the arc surface of the arc-shaped step is matched with the arc surface on the outer side of the movable knife, and the length and the height of the arc surface of the arc-shaped step are designed based on the fact that the movable knife is not blocked from rotating.

4. The needle plate of a sewing machine of claim 3, wherein the arcuate step has a length extending from one side of the needle plate body to one side of the spacer.

5. The needle plate of sewing machine according to claim 4, wherein a reinforcing boss is integrally formed on the inner side surface of the needle plate body on a side corresponding to the arcuate step, and the reinforcing boss is shaped so as not to interfere with the movement of the feed cam.

6. A needle bar according to claim 1 or 2 or 3 or 4 or 5 wherein the needle holes are of integral design with the needle bar body.

7. The needle plate of sewing machine according to claim 1 or 2 or 3 or 4 or 5, characterized in that a split design is adopted between the needle hole and the needle plate body.

8. The needle plate of sewing machine according to claim 7, wherein the split design is that the needle hole is formed on a split plate, the split plate is provided with a countersunk hole, correspondingly, a groove for accommodating the split plate is formed at a corresponding position of the needle plate body, a threaded hole is formed at a position corresponding to the countersunk hole of the split plate in the groove, and the split plate is fixed in the groove of the needle plate body by a screw.