CN105568578B

CN105568578B - Rotating shuttle and horizontal kettle of household multifunctional sewing machine

Info

Publication number: CN105568578B
Application number: CN201610055136.1A
Authority: CN
Inventors: 李善法
Original assignee: Ningbo Yinzhou Gulian Sewing Equipment Co ltd
Current assignee: Ningbo Yinzhou Gulian Sewing Equipment Co ltd
Priority date: 2016-01-27
Filing date: 2016-01-27
Publication date: 2022-12-02
Anticipated expiration: 2036-01-27
Also published as: CN105568578A

Abstract

The invention provides a rotating shuttle of a household multifunctional sewing machine, belonging to the technical field of machinery. It has solved the inconvenient problem of current rotating shuttle manufacturing. This domestic multi-functional sewing machine's rotating shuttle includes: the body adopts plastic materials to make, has linked firmly hook portion and this hook portion adopts metal material to make on the body. The invention has the advantages of convenient manufacture and good use effect. The invention also provides a horizontal kettle of the household multifunctional sewing machine.

Description

Rotating shuttle and horizontal kettle of household multifunctional sewing machine

Technical Field

The invention belongs to the technical field of machinery, and relates to a rotating shuttle and a horizontal kettle of a household multifunctional sewing machine.

Background

The sewing machine is a machine which uses one or more sewing threads to form one or more neat, beautiful, flat and firm stitches on a sewing material so as to enable one or more layers of the sewing material to be quickly interwoven and sewn. The general sewing machine is composed of four parts of a machine head, a machine base, a transmission part and accessories, wherein the machine head is the main part of the sewing machine and mainly comprises four mechanisms of material puncturing, thread hooking, thread picking and feeding and auxiliary mechanisms of winding, material pressing, tooth dropping and the like, and the motion of the mechanisms is reasonably matched and circularly operated to sew up the materials.

The core of a sewing machine is a coil sewing system, a coil sewing method comprises chain sewing, lock sewing and the like, most common sewing machines for sewing cloth, clothes and the like adopt a firmer lock sewing device for lock sewing, the lock sewing device comprises a shuttle hook, a bobbin case, a bobbin and the like, the shuttle hook rotates under the action of external force (manual or motor) and drives the bobbin case and the bobbin to rotate, and meanwhile, an external machine needle penetrates through the cloth to form a coil (a needle thread ring) and sleeves shuttle threads on the bobbin to form lock sewing.

The shuttle has a warp-wise inertia force, so that the wear of the shuttle and parts around the shuttle can be caused, most of the shuttle is used for some low-speed sewing machines, and the application range is small; and the shuttle hook is usually horizontally arranged, so that the installation of the bobbin case and the bobbin is not facilitated, the connection stability is low, and the shuttle hook is easy to damage during rotation.

In the prior art, a seam locking device adopting a rotating shuttle is also available, but the rotating shuttle is usually made of metal, has more parts, high production cost and more complex manufacture.

To sum up, in order to solve the structural deficiency of the sewing device of the existing sewing machine, a rotating shuttle and a horizontal kettle of a household multifunctional sewing machine with convenient manufacture and good use effect need to be designed.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a rotating shuttle and a horizontal kettle of a household multifunctional sewing machine, which are convenient to manufacture and good in using effect.

The purpose of the invention can be realized by the following technical scheme: a rotary shuttle of a domestic multifunction sewing machine, comprising:

the body adopts plastic materials to make, has linked firmly hook portion and this hook portion adopts metal material to make on the body.

In the rotating shuttle of the household multifunctional sewing machine, the rotating shuttle further comprises a thread column which is fixedly arranged at one end of the body and is integrally formed with the body.

In the rotating shuttle of the household multifunctional sewing machine, the body is provided with the groove, the side wall of the groove is provided with the auxiliary notch, and the hook part is positioned in the groove and is close to the auxiliary notch.

In the rotating shuttle of the household multifunctional sewing machine, the bottom of the groove is provided with an arc-shaped groove close to the auxiliary notch, and the hook part is inserted in the arc-shaped groove.

In the rotating shuttle of the household multifunctional sewing machine, the weight of the hook part is equal to the weight reduced after the auxiliary notch and the arc-shaped groove are formed in the body.

In the rotating shuttle of the household multifunctional sewing machine, the hook part comprises a tip end and a connecting part which are connected into a whole, the tip end is positioned above the connecting part, the connecting part is inserted in the arc-shaped groove, the tip end and the connecting part surround to form a U-shaped groove which is obliquely arranged, and the shape part of the side wall of the groove at the auxiliary notch is matched with the shape of the U-shaped groove.

In the rotating shuttle of the household multifunctional sewing machine, the connecting part is fixedly connected with the side wall of the groove through a screw.

In the rotating shuttle of the household multifunctional sewing machine, the annular baffle is fixedly arranged at the bottom of the groove, the annular baffle is buckled with the annular metal sheet, the outer side edge part of the annular metal sheet extends outwards to form a plurality of buckling lugs, and the annular baffle is provided with buckling grooves corresponding to the buckling lugs one to one.

In the rotating shuttle of the household multifunctional sewing machine, the buckling lugs are uniformly distributed around the annular metal sheet, and the distance between every two adjacent buckling lugs is equal.

A horizontal kettle of a household multifunctional sewing machine comprises:

the rotating shuttle described above;

the bobbin case is embedded in the groove, and the rotating shuttle can drive the bobbin case to rotate together.

In the horizontal kettle of the household multifunctional sewing machine, the metal sheet is fixedly arranged at the bottom of the groove, and the magnetic block which is arranged corresponding to the metal sheet is arranged at the bottom of the shuttle shell.

In the horizontal kettle of the household multifunctional sewing machine, the magnetic block is provided with a plurality of semicircular notches which are uniformly distributed around the axial lead of the magnetic block, and the bottom of the bobbin case is fixedly provided with a plurality of semicircular lugs which are in one-to-one correspondence with the semicircular notches and are arranged along the horizontal direction.

Compared with the prior art, the invention has reasonable design, the rotating shuttle is integrally formed, the manufacture is convenient and the stability is good; the pointed end on the hook part and the U-shaped groove are arranged, so that the needle thread ring can be hooked conveniently during working, and the purpose of locking the seam is achieved; the metal sheet is buckled in the rotating shuttle, and the shuttle shell is fixed in the rotating shuttle through the attraction effect of the magnetic block and the metal sheet, so that the working stability is ensured.

Drawings

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention.

Fig. 2 is a schematic structural view of a rotating shuttle according to a preferred embodiment of the present invention.

Fig. 3 is a schematic view of fig. 2 from another perspective.

Fig. 4 is a schematic view of the structure of fig. 3 from another view angle.

Fig. 5 is a schematic structural view of the bobbin case according to a preferred embodiment of the present invention.

FIG. 6 is a schematic diagram of a magnetic block according to a preferred embodiment of the present invention.

In the figure, 10, a rotating shuttle; 11. a body; 111. a groove; 112. an auxiliary notch; 113. an arc-shaped slot; 12. a threaded post; 20. a hook portion; 21. a tip; 22. a connecting portion; 23. a U-shaped groove; 30. a bobbin case; 31. a semi-circular lug; 40. an annular baffle; 41. buckling grooves; 50. an annular metal sheet; 51. buckling lugs; 60. a magnetic block; 61. a semicircular notch.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the rotating shuttle of the domestic multifunctional sewing machine comprises:

the body 11 is made of plastic materials, the body 11 is fixedly connected with a hook portion 20, and the hook portion 20 is made of metal materials.

Preferably, the rotating shuttle 10 further comprises a threaded column 12, and the threaded column 12 is fixedly arranged at one end of the body 11 and is integrally formed with the body 11.

Since the shuttle has a radial inertia force, which causes wear of the shuttle itself and parts around the shuttle, and the rotating shuttle 10 can rotate at a uniform speed, operate stably and with low noise, and is also applicable to a high-speed sewing machine, the existing domestic sewing machine has gradually adopted the rotating shuttle 10 to replace the shuttle for sewing.

However, the conventional rotating shuttle 10 is usually made of metal, and corresponding connecting pieces are required to be used for connecting the rotating shuttle 10 with other parts of the sewing machine, so that the parts are more, the production cost is high, and the manufacture is more complicated.

Therefore, the present invention designs a rotating shuttle 10 made of plastic material, wherein the body 11 and the threaded column 12 are integrally formed, the whole rotating shuttle 10 can be formed at one time by an injection mold, the manufacturing is convenient, and the good integral stability is still maintained when the rotating shuttle 10 rotates.

In the present embodiment, the rotary hook 10 is preferably installed inside the sewing machine below the needle by the screw post 12, but other connection means may be used. When the sewing machine works, the needle moves up and down, the rotating shuttle 10 rotates around the axis of the rotating shuttle 10, and the rotating shuttle 10 can hook a needle and line ring formed by the needle passing through cloth so as to perform sewing work.

As shown in fig. 2 to 4, preferably, a groove 111 is formed on the body 11 and an auxiliary notch 112 is formed on a side wall of the groove 111, and the hook 20 is located in the groove 111 and adjacent to the auxiliary notch 112.

The groove 111 is formed in one end, away from the threaded column 12, of the body 11, the auxiliary notch 112 is also formed in the other end, away from the threaded column 12, of the body, the hook portion 20 is close to the auxiliary notch 112, the hook portion 20 can conveniently hook a needle loop formed by a needle penetrating through cloth when rotating along with the rotating shuttle 10, and therefore the sewing operation can be conveniently conducted.

Further preferably, an arc-shaped groove 113 is opened at the bottom of the groove 111 and is disposed near the auxiliary notch 112, and the hook 20 is inserted into the arc-shaped groove 113.

In order to further ensure the stability of the hook portion 20, an arc-shaped groove 113 for the hook portion 20 to be installed is formed at the bottom of the groove 111, and the arc-shaped groove 113 is provided near the auxiliary notch 112 to facilitate the hook portion 20 to be partially inserted into the arc-shaped groove 113.

Further, the weight of the hook 20 is equal to the weight reduced by the auxiliary notch 112 and the arc-shaped groove 113 formed on the body 11.

It should be noted that, the conventional rotating shuttle 10 is made of metal, and the hook 20 is directly formed on the body 11 of the rotating shuttle 10, so that the weight distribution of the rotating shuttle 10 is uneven, and the center of gravity is shifted, so that an annular groove is often formed on the rotating shuttle 10 at a side corresponding to the hook 20 to balance the weight distribution of the rotating shuttle 10, and at the same time, the complexity of manufacturing the rotating shuttle 10 is increased.

In the present invention, the rotating shuttle 10 made of plastic is adopted, and in order to ensure the working effect, the metal hook part 20 is separately manufactured and fixedly connected with the body 11, and the auxiliary notch 112 is opened to facilitate the hook part 20 to hook the needle thread loop. Thus, it can be preliminarily considered that the weight distribution of the entire rotary hook 10 is uniform and the center of gravity is not changed, and further, since the hook portion 20 is made of metal and has a large weight, the provision of the arc-shaped groove 113 can further balance the weight distribution of the rotary hook 10 to some extent.

At this time, an annular groove is not required to be formed on the body 11 to balance the weight distribution of the rotating shuttle 10, the manufacturing difficulty is reduced, the rotating shuttle 10 can be formed by one-time injection molding, and the manufacturing is convenient.

Preferably, the hook 20 includes a tip 21 and a connecting portion 22 connected together, the tip 21 is located above the connecting portion 22, the connecting portion 22 is partially inserted into the arc-shaped groove 113, the tip 21 and the connecting portion 22 surround to form an inclined "U" shaped groove 23, and the shape of the side wall of the groove 111 at the auxiliary notch 112 is matched with the shape of the "U" shaped groove 23.

Specifically, when the needle and thread loop hooking device works, the pointed end 21 hooks the needle and thread loop, the needle and thread loop can be located in the U-shaped groove 23 within a certain period of time, and the inclined U-shaped groove 23 facilitates the hooking of the needle and thread loop by the pointed end 21 and can prevent the needle and thread loop from falling off. Wherein, the connecting portion 22 is partially inserted into the arc-shaped groove 113, which facilitates the connection between the hook portion 20 and the body 11 and ensures the stability of the hook portion 20.

The shape of the side wall of the groove 111 at the auxiliary notch 112 is matched with the shape of the U-shaped groove 23, and the structure is arranged to further facilitate the needle thread ring to enter the U-shaped groove 23, so as to ensure the normal work of the rotary shuttle 10.

Further preferably, the connecting portion 22 is fixedly connected to the side wall of the groove 111 by a screw (not shown). In this embodiment, the connection portion 22 is preferably fixedly connected to the side wall of the groove 111 through a screw, so as to further enhance the connection strength between the hook portion 20 and the body 11, ensure that the hook portion 20 is not thrown out when rotating with the rotating shuttle 10, and have high stability. Of course, the hook 20 may be directly inserted into the arc-shaped slot 113, or other connection methods may be adopted to further fixedly connect the hook 20 and the body 11.

In this embodiment, the number of the screws is preferably two, and it should be mentioned that the weight of the screws has no influence on the overall weight and can be ignored.

As shown in fig. 2, preferably, the bottom of the groove 111 is fixedly provided with the ring-shaped baffle 40, the ring-shaped baffle 40 is fastened with the ring-shaped metal sheet 50, the outer edge of the ring-shaped metal sheet 50 partially extends outwards to form a plurality of fastening lugs 51, and the ring-shaped baffle 40 is provided with fastening grooves 41 corresponding to the fastening lugs 51 one to one.

Further preferably, each of the fastening lugs 51 is uniformly distributed around the annular metal sheet 50, and the distance between two adjacent fastening lugs 51 is equal.

The annular metal sheet 50 is buckled with the buckling groove 41 through the buckling lug 51, so that the annular metal sheet 50 is firmly connected with the body 11, and the work is stable. In this embodiment, the number of the fastening lugs 51 is preferably three, and the fastening lugs are uniformly distributed on the outer peripheral edge of the annular metal sheet 50.

As shown in FIG. 1, the horizontal kettle of the household multifunctional sewing machine comprises:

the rotary hook 10 described above;

the bobbin case 30 is embedded in the groove 111, and the rotary shuttle 10 can drive the bobbin case 30 to rotate together.

As shown in fig. 2, 5 and 6, preferably, an annular metal plate 50 is fixedly installed at the bottom of the groove 111, and a magnetic block 60 corresponding to the annular metal plate 50 is installed at the bottom of the bobbin case 30.

In operation, the rotary hook 10 is vertically installed in the sewing machine, the bobbin case 30 is installed in the groove 111 of the rotary hook 10 and the bobbin case 30 is attracted to the annular metal sheet 50 by the magnet 60, the bobbin case 30 is fixedly connected to the rotary hook 10, and the bobbin case 30 is driven to rotate together when the rotary hook 10 rotates.

Preferably, the magnetic block 60 is provided with a plurality of semicircular notches 61 uniformly distributed around the axial lead of the magnetic block 60, and the bottom of the bobbin case 30 is fixedly provided with a plurality of semicircular lugs 31 which are in one-to-one correspondence with the semicircular notches 61 and are arranged along the horizontal direction.

In this embodiment, a structural design that the semicircular notch 61 is engaged with the semicircular lug 31 is preferably adopted, so as to fix the magnetic block 60 and the bobbin case 30 together, thereby ensuring the connection stability between the bobbin case 30 and the rotary hook 10.

During actual work, a bobbin for providing a bobbin thread is further placed in the bobbin case 30, specifically, the needle vertically penetrates through the cloth downwards, the rotating shuttle 10 also rotates, the hook portion 20 is driven to rotate and hook a needle thread ring on the needle, the rotating shuttle 10 continues to rotate, the needle thread ring moves along with the hook portion 20, when the rotating shuttle 10 rotates to a certain degree, the needle thread ring falls off and covers the bobbin thread to move upwards, and at the moment, one-time sewing work is completed.

The horizontal kettle of the household multifunctional sewing machine has reasonable structural design and convenient operation; the rotating shuttle 10 is formed by one-time injection molding, so that the manufacturing is convenient and the connection is also convenient; the bobbin case 30 is firmly connected with the rotating shuttle 10, the working stability is high, and the working effect is good.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. A rotating shuttle of a household multifunctional sewing machine is characterized by comprising:

the body is made of plastic materials, and a hook part is fixedly connected to the body and made of metal materials;

the body is provided with a groove, the side wall of the groove is provided with an auxiliary notch, and the hook part is positioned in the groove and is close to the auxiliary notch;

an arc-shaped groove which is arranged close to the auxiliary notch is formed in the bottom of the groove, and the hook part is inserted into the arc-shaped groove;

the weight of the hook part is equal to the weight reduced after the body is provided with the auxiliary notch and the arc-shaped groove;

the hook part comprises a tip and a connecting part which are connected into a whole, the tip is positioned above the connecting part, the connecting part is inserted into the arc-shaped groove, the tip and the connecting part are encircled to form a U-shaped groove which is obliquely arranged, and the shape of the side wall of the groove at the auxiliary notch is matched with the shape of the U-shaped groove;

the connecting part is fixedly connected with the side wall of the groove through a screw;

the bottom of the groove is fixedly provided with an annular baffle; an annular metal sheet is buckled on the annular baffle; the outer side edge part of the annular metal sheet extends outwards to form a buckle lug; the annular baffle plate is provided with buckling grooves corresponding to the buckling lugs one to one.

2. The rotating shuttle of a domestic multifunctional sewing machine according to claim 1, further comprising a threaded post fixedly arranged at one end of the body and integrally formed with the body.

3. A horizontal kettle of a household multifunctional sewing machine is characterized by comprising:

the rotary hook according to claim 1 or 2;

4. The horizontal kettle of a domestic multifunctional sewing machine as claimed in claim 3, wherein the magnet corresponding to the annular metal sheet is installed at the bottom of the bobbin case.

5. The horizontal kettle of a domestic multifunctional sewing machine as claimed in claim 4, wherein the magnetic block is provided with a plurality of semicircular notches uniformly distributed around the axis of the magnetic block, and the bottom of the bobbin case is fixedly provided with a plurality of semicircular lugs which are one-to-one corresponding to the semicircular notches and arranged along the horizontal direction.