CN202744771U - A three-needle six-thread lock sewing machine - Google Patents

Abstract

The utility model discloses a six line lock formula sewing machines of three-needle, it includes: the three-needle assembly comprises a needle rod, an adjusting block fixed at the tail end of the needle rod and three sewing needles arranged in the adjusting block, and the relative distance between the sewing needles is adjusted through the adjusting block; the rotating shuttle mechanism includes: the three rotating shuttle seats and the rotating shuttles are arranged in the rotating shuttle seats, wherein sewing needles in the three-needle assembly correspond to thread shifting hooks of the rotating shuttles one by one and act synchronously. The utility model discloses a "one-to-one" mode, a sewing needle corresponds a rotating shuttle promptly, can once only sew up three locking-type stylolite simultaneously like this, has strengthened sutural stability and intensity. The utility model provides a relative distance can all be adjusted to three sewing needles and three rotating shuttle of complex with it, can adjust the interval between the sewing thread after sewing up, and the assembly is simple and convenient, and it is very convenient to use.

Description

A three-needle six-thread lock sewing machine

Technical field:

The utility model relates to the technical field of sewing machines, in particular to a three-needle six-thread lock sewing machine capable of completing three independent lock-type sutures with three needles at one time, with high sewing efficiency and adjustable spacing between sutures.

Background technique:

A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the sewing material to interweave or sew one or more layers of sewing material. The sewing machine can sew fabrics such as cotton, fiber crops, silk, wool, and artificial fibers, and products such as leather, plastics, and paper.

Generally, ordinary sewing machines use a single needle bar to drive a needle structure. This kind of sewing machine has a simple structure and can basically meet the general sewing operations. need.

When the fabric is stitched, in order to improve the tightness of stitching and prevent the thread body from falling off, it is usually necessary to stitch multiple times, that is, to stitch twice or thrice. Because present sewing machine adopts one group of needle thread to sew more, promptly a shuttle body is set in the support. This sewing machine cannot realize the stitching process of once finishing the multi-track sewing thread. The traditional approach is to perform multiple stitching operations. However, this suture method is not only inefficient, but also difficult to ensure that the suture lines formed by the front and rear sutures are parallel to each other, causing the suture lines to be twisted and deformed, which is very unsightly.

In view of the above problems, in order to realize that one sewing operation can produce multiple suture lines, it is necessary to add two or three sewing needles on the machine head. For example, a sewing machine is provided with two sewing needles, and a shuttle body is usually arranged in the machine base, that is, a shuttle body is used to cooperate with the two sewing needles simultaneously. In addition, it is theoretically possible to use a shuttle body to cooperate with three sewing needles, but this structure is unstable in operation and is generally not used.

The above is a one-to-many structure (that is, a structure in which one rotary hook corresponds to multiple sewing needles). The biggest problem is that since the three sets of sewing threads all use one shuttle body, after the fabric is stitched, the surface has three However, the bottom thread (that is, the inner thread of the shuttle) all comes from the same shuttle body, so when the bottom thread breaks, the entire sewing thread will be off-line, which cannot achieve the purpose of multi-pass suture at all.

Utility model content:

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a three-needle six-thread suture that can complete three independent lock-type sutures at one time with three needles, has high sewing efficiency, and can adjust the distance between sutures. Lockstitch sewing machine.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions: a three-needle sewing machine, which includes: a machine base and a machine head fixed on the machine base, wherein a hook mechanism is arranged in the machine base, and its characteristic That is: the machine head is provided with a three-needle assembly, the three-needle assembly includes a needle bar, an adjustment block fixed at the end of the needle bar, and three sewing needles installed in the adjustment block, and the sewing needles are adjusted by the adjustment block. The relative distance between them; the rotary hook mechanism includes: three rotary hook seats and a rotary shuttle installed in the rotary hook seats, wherein the sewing needles in the three-needle assembly correspond to the hooks of the rotary hooks one by one, and synchronize actions.

Further, in the above technical solution, the three hook seats are fixed in the machine base in an adjustable relative distance, wherein the hook seats on both sides are respectively equipped with a first hook for driving the hook. Gear set, the hook seat in the middle is equipped with a second gear set for driving the hook.

Further, in the above technical solution, the first gear set includes: a driving gear linked with the first driving shaft in the sewing machine driving mechanism, a driven gear meshingly connected with the driving gear; the lower end of the hook The rotating shaft passes through the shaft hole in the driven gear, so that the hook is linked with the first gear set.

Further, in the above technical solution, the second gear set includes: a driving gear linked with the first drive shaft in the sewing machine drive mechanism, a driven gear used to drive the hook, and a driven gear used for linked The gear device of the driving gear and the driven gear, the rotating shaft at the lower end of the rotary hook passes through the shaft hole in the driven gear, so that the rotary hook is linked with the second gear set.

Further, in the above technical solution, the gear device includes: a shaft body, a first gear fixed to the front end of the shaft body and meshed with the driving gear in the second gear set, and sequentially sleeved on the shaft body The first shaft sleeve on the body, the second gear, and the second shaft sleeve, wherein the second gear is engaged with the driven gear in the second gear set.

Further, in the above technical solution, a feeding device is installed on the side of the hook seat in the hook mechanism, and the feeding device includes: movably installed on the side of the hook seat and connected with the second driving mechanism in the sewing machine driving mechanism. A shaft-linked base and a feeding plate installed on the base, wherein the toothed plate formed on the feeding plate passes through the hole in the needle plate installed on the machine base and is exposed on the needle plate.

Further, in the above technical solution, the base includes a main body, a fork formed at the front end of the main body, a shaft cylinder formed at the rear end of the main body, and an installation block bent and extended upward along the main body, and the feeding plate It is fixedly installed on the installation block; the second driving shaft is fixed in the shaft tube to drive the feeding device to move.

After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art:

1. When one needle bar is installed in the utility model, and three needles are installed at the bottom of the needle bar, it can be used for three-needle sewing; because of the "one-to-one" method adopted, that is, one sewing needle corresponds to one rotary hook, such sewing Finally, three independent sewing lines will be formed, and the breakage of any one suture line will not affect the other two suture lines, thus enhancing the stability and strength of the suture. The utility model sews three lock-type sutures at one time at the same time, unlike the traditional sewing machine, which needs to be operated once with a double-needle machine and then sewed with a single-needle machine. The utility model is very easy to operate and has high sewing efficiency. In addition, since the positions of the pinholes are fixed, the three lock sutures are evenly distributed, and the appearance is beautiful without artificial distortion. In addition, the three lock stitches are needle-locked, which makes them very stable and can meet many different sewing needs.

2. The relative distance between the three sewing needles and the three hooks matched with them can be adjusted in the utility model, and the distance between the stitched sewing threads can be adjusted, which is easy to assemble and very convenient to use.

Description of drawings:

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a distribution schematic diagram of the rotary hook of the utility model;

Fig. 3 is a structural schematic diagram of the rotary hook mechanism of the utility model;

Detailed ways:

Below in conjunction with specific embodiment and accompanying drawing, the utility model is further described.

As shown in Figures 1-3, a three-needle sewing machine includes: a machine base 1 and a machine head 2 fixed on the machine base 1, wherein, a rotary shuttle mechanism 3 is arranged in the machine base 1, and it is characterized in that: The machine head 2 is provided with a three-needle assembly 4, the three-needle assembly 4 includes a needle bar 41, an adjustment block 42 fixed at the end of the needle bar 41 and three sewing needles 43 installed in the adjustment block 42, the sewing needle 43 adjust the relative distance between them through the adjusting block 42; the hook mechanism 3 includes: three hook seats 31, 32, 33 and the hook 30 installed in the hook seats 31, 32, 33, wherein , the sewing needles 43 in the three-needle assembly 4 are in one-to-one correspondence with the hooks 300 of the rotary hook 30, and act synchronously.

The three rotary hook seats 31, 32, 33 are fixed in the machine base 1 in an adjustable relative distance, so that the distance between the stitched sewing threads can be adjusted, the assembly is simple, and the use is very convenient. A first gear set 51 for driving the hook 30 is mounted on the hook seats 31 and 33 on both sides, and a second gear set 52 for driving the hook 30 is installed on the hook seat 32 in the middle.

The first gear set 51 includes: a drive gear 511 linked with the first drive shaft 101 in the sewing machine drive mechanism, a driven gear 513 meshed with the drive gear 511; Through the shaft hole in the driven gear 513 , the rotary hook 30 is linked with the first gear set 51 . After the first drive shaft 101 passes through the shaft hole of the drive gear 511 , a third sleeve 541 is sleeved thereon.

The second gear set 52 includes: a drive gear 521 linked with the first drive shaft 101 in the driving mechanism of the sewing machine, a driven gear 522 used to drive the hook 30, and a drive gear 521 linked with The gear device 53 of the driven gear 522 , the rotating shaft 301 at the lower end of the hook 30 passes through the shaft hole in the driven gear 522 , so that the hook 30 and the second gear set 52 are linked. A cover 321 is installed at the bottom of the hook seat 32 , and the cover 321 seals the rotating shaft 301 at the bottom of the hook seat 32 .

The gear device 53 includes: a shaft body 531, a first gear 532 fixed to the front end of the shaft body 531 and engaged with the driving gear 521 in the second gear set 52, and sequentially sleeved on the shaft body 531 The first shaft sleeve 533 , the second gear 534 , and the second shaft sleeve 535 , wherein the second gear 534 is engaged with the driven gear 522 in the second gear set 52 .

A needle plate 11 is installed on the machine base 1 , and a plurality of holes 111 and three needle holes 112 are formed on the needle plate 11 , and the wire hook 300 of the rotary hook 30 is exposed in the needle holes 112 .

A feeding device 6 is installed on the side of the hook seat 32 in the hook mechanism 3, and the feeding device 6 includes: movably installed on the side of the hook seat 32 and linked with the second drive shaft 102 in the driving mechanism of the sewing machine The base 61 and the feeding plate 62 installed on the base 61, wherein the tooth pattern plate 621 formed on the feeding plate 62 passes through the hole 111 of the needle plate 11 installed on the machine base 1 and is exposed on the needle plate 11 superior.

The base 61 includes a main body 611, a fork 612 formed at the front end of the main body 611, a shaft cylinder 613 formed at the rear end of the main body 611, and a mounting block 614 bent and extended upward along the main body 611. The feeding plate 62 It is fixedly installed on the installation block 614 to drive the feeding device 6 to move. The fork 612 in the base 61 is nested in the third sleeve 541 sleeved on the first drive shaft 101, and the second drive shaft 102 is fixed in the shaft cylinder 613, so that the base Seat 61 is movably installed on the side of rotary hook seat 32 in rotary hook mechanism 3 .

The machine head 2 is provided with a presser foot 12 matching the needle plate 11 , and the presser foot 12 is located beside the three-needle assembly 4 .

The utility model adopts the "one-to-one" method, that is, one sewing needle corresponds to one rotary hook, so that three independent sewing threads will be formed after sewing, and the breakage of any sewing thread will not affect the other two sewing threads. , thus enhancing the stability and strength of the suture. The utility model sews three lock-type sutures at one time at the same time, unlike the traditional sewing machine, which needs to be operated once with a double-needle machine and then sewed with a single-needle machine. The utility model is very easy to operate and has high sewing efficiency. In addition, since the positions of the pinholes are fixed, the three lock sutures are evenly distributed, and the appearance is beautiful without artificial distortion. In addition, the three lock stitches are needle-locked, which makes them very stable and can meet many different sewing needs.

Of course, the above descriptions are only specific embodiments of the utility model, and are not intended to limit the implementation scope of the utility model. Should be included in the utility model patent scope.

Claims (7)

1. A three-needle six-thread lock sewing machine, comprising: a machine base (1) and a machine head (2) fixed on the machine base (1), wherein a rotary shuttle mechanism ( 3), characterized in that: the machine head (2) is provided with a three-needle assembly (4), the three-needle assembly (4) includes a needle bar (41), a The adjustment block (42) and three sewing needles (43) in the adjustment block (42) are installed, and the sewing needles (43) adjust the relative distance between them through the adjustment block (42); the rotary hook mechanism (3) Including: three rotary hook seats (31, 32, 33) and the rotary hook (30) installed in the rotary hook seats (31, 32, 33), wherein, the sewing needle (43) in the three-needle assembly (4) Corresponding one-to-one with the dial hook (300) of rotary hook (30), and synchronous action. 2. A three-needle six-thread lock sewing machine according to claim 1, characterized in that: the three hook seats (31, 32, 33) are fixed on the machine base ( 1), wherein the hook seats (31, 33) on both sides are respectively equipped with a first gear set (51) for driving the hook (30), and the hook seat (32) in the middle is installed with a to drive the second gear set (52) of the hook (30). 3. A three-needle six-thread lock sewing machine according to claim 2, characterized in that: the first gear set (51) includes: linked with the first drive shaft (101) in the driving mechanism of the sewing machine The driving gear (511) of the driving gear (511), the driven gear (513) meshed with the driving gear (511); the rotating shaft at the lower end of the hook (30) passes through the shaft hole in the driven gear (513), so that the hook (30) is linked with the first gear set (51). 4. A three-needle six-thread lock sewing machine according to claim 2, characterized in that: said second gear set (52) includes: linked with the first drive shaft (101) in the drive mechanism of the sewing machine The driving gear (521), the driven gear (522) used to drive the hook (30), and the gear device (53) used to link the driving gear (521) and the driven gear (522), the The rotating shaft (301) at the lower end of the hook (30) passes through the shaft hole in the driven gear (522), so that the hook (30) is linked with the second gear set (52). 5. A three-needle six-thread lock sewing machine according to claim 4, characterized in that: said gear device (53) comprises: a shaft body (531), fixed on the front end of the shaft body (531) and connected to The driving gear (521) in the second gear set (52) is meshed with the first gear (532) and the first sleeve (533) and the second gear ( 534), the second shaft sleeve (535), wherein, the second gear (534) is engaged with the driven gear (522) in the second gear set (52). 6. A three-needle six-thread lock sewing machine according to claim 1, characterized in that: a feeding device (6) is installed on the side of the hook seat (32) in the hook mechanism (3), and the feeding device (6) is The device (6) includes: a base (61) that is movably installed on the side of the hook seat (32) and linked with the second drive shaft (102) in the driving mechanism of the sewing machine; The feeding plate (62), wherein the toothed plate (621) formed on the feeding plate (62) passes through the hole (111) in the needle plate (11) installed on the machine base (1) and is exposed to the needle plate (11). 7. A three-needle six-thread lock sewing machine according to claim 6, characterized in that: the base (61) includes a main body (611), a fork (612) formed at the front end of the main body (611) ), the shaft tube (613) formed at the rear end of the main body (611) and the installation block (614) bent and extended upward along the main body (611), and the feeding plate (62) is fixedly installed on the installation block (614) Above; the second driving shaft (102) is fixed in the shaft cylinder (613) to drive the feeding device (6) to move.

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