CN216074257U

CN216074257U - Sewing machine

Info

Publication number: CN216074257U
Application number: CN202121823900.8U
Authority: CN
Inventors: 王建
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2022-03-18
Anticipated expiration: 2031-08-05

Abstract

The utility model provides a sewing machine, and belongs to the technical field of machinery. It has solved the not high problem of its stability of present sewing machine's mop wheel device. The sewing machine comprises a machine shell and a cloth dragging wheel mechanism, wherein a main shaft for driving sewing equipment to work is installed in the machine shell, and the cloth dragging wheel mechanism comprises a first connecting rod, an eccentric wheel, a second transmission shaft and a cloth dragging wheel device; it is characterized in that the eccentric wheel is fixedly connected with the main shaft; the eccentric wheel is arranged on the first connecting rod; the main shaft drives the first connecting rod to do reciprocating motion through the eccentric wheel, and a first limiting part is integrally formed on the machine shell; the second transmission shaft penetrates through the first limiting part and then is connected with the mop wheel device. The first limiting part machine shell is integrally connected, namely the vibration of the mop wheel mechanism is limited by the main body frame of the sewing machine, and compared with a mode that a detachable connecting plate is adopted to enhance stability in the prior art, the first limiting part machine shell is more reliable, and errors caused by vibration of the mop wheel mechanism can be greatly reduced.

Description

Sewing machine

Technical Field

The utility model belongs to the technical field of machinery, and relates to a sewing machine.

Background

In textile and clothing manufacturing enterprises, sewing machines are frequently used as cloth processing equipment. In the process of sewing the cloth, a cloth dragging wheel on a sewing machine is needed to feed the cloth.

The Chinese invention patent [ CN111206340B ] discloses a cloth dragging wheel device for synchronously feeding with a sewing machine, which comprises a shell, an upper dragging wheel component, a lower dragging wheel component, a connecting rod mechanism, a transmission mechanism and a base; the shell side is equipped with drive mechanism and last tow boat subassembly, and the base side is equipped with tow boat subassembly down, and the base has link mechanism, and drive mechanism and last tow boat subassembly are located tow boat subassembly top down, go up tow boat subassembly and connect drive mechanism, and drive mechanism connects tow boat subassembly down, and lower tow boat subassembly connects link mechanism.

However, as can be seen from the drawings attached to the above patent specification, the drive shaft of the tug assembly of the patent is not fixed to the main frame of the sewing machine, and the stability of such a tug mechanism is difficult to be ensured if large vibration occurs during the operation of the sewing machine.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems and provides a sewing machine.

The purpose of the utility model can be realized by the following technical scheme:

a sewing machine comprises a machine shell and a mop wheel mechanism, wherein a main shaft for driving sewing equipment to work is installed in the machine shell, and the mop wheel mechanism comprises a first connecting rod, an eccentric wheel, a second transmission shaft and a mop wheel device; the eccentric wheel is fixedly connected with the main shaft; the eccentric wheel is arranged on the first connecting rod; the main shaft drives the first connecting rod to do reciprocating motion through the eccentric wheel, and a first limiting part is integrally formed on the machine shell; the second transmission shaft penetrates through the first limiting part and then is connected with the mop wheel device.

Preferably, the housing is further integrally formed with a second limiting portion; the mop wheel mechanism further comprises a first transmission rod, and one end, connected with the first transmission rod, of the second transmission shaft penetrates through the first limiting part; the other end of the second transmission shaft, which is connected with the mop wheel device, is connected with the second limiting part.

Preferably, the second limiting part is provided with a limiting area; the other end is positioned in the limit area; the mop wheel device comprises a second transmission rod; the second transmission rod is fixedly connected with the other end;

the limiting area is used for limiting the second transmission rod to axially move along the axial direction of the second transmission shaft.

Preferably, the first limit part and the second limit part are connected with the second transmission shaft through bearings.

Preferably, the mop wheel mechanism further has a first fastening means; the first fastener is used for clamping and fastening the second transmission shaft; the first fastener is fixedly connected with the first connecting rod.

Preferably, the first fastener is provided with an adjusting strip hole; the adjusting elongated hole is provided with a third limiting part; one end of the first connecting rod is fixedly connected with a connecting part with threads, and a nut is mounted on the connecting part; and after the connecting part penetrates through the adjusting strip hole and is in threaded connection with the nut, the nut is abutted against the third limiting part.

Compared with the prior art, the first limiting part machine shell is integrally connected, namely the vibration of the mop wheel mechanism is limited by the main body frame of the sewing machine, and compared with a mode that a detachable connecting plate is adopted to enhance stability in the prior art, the first limiting part machine shell is more reliable, and errors caused by vibration of the mop wheel mechanism can be greatly reduced.

Drawings

Fig. 1 is a schematic view of a structure of a sewing machine.

Figure 2 is a partial structural schematic view I of the mop wheel mechanism.

Figure 3 is a second partial structural view of the mop wheel mechanism.

In the figure, 1, a housing; 11. a first limiting part; 12. a second limiting part; 121. a limiting region; 2. a first drive lever; 21. a first connecting rod; 211. a connecting portion; 212. a nut; 22. An eccentric wheel; 23. a first fastener; 231. adjusting the strip holes; 2311. a third limiting part; 3. a second drive shaft; 4. a mop wheel device; 41. and a second transmission rod.

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.

The utility model provides a sewing machine, includes casing 1, installs the main shaft that is used for driving sewing machine operation in the casing 1, and the main shaft is used for driving other equipment on the sewing machine, and the concrete structure of other equipment is prior art, and the event is no longer described in this application.

The sewing machine further comprises a mop wheel mechanism, and the mop wheel mechanism comprises a first transmission rod 2, a second transmission shaft 3 and a mop wheel device 4. The first transmission rod 2 is fixedly connected with the main shaft. Therefore, the mop wheel mechanism is directly driven by the main shaft of the sewing machine, the driving mechanism can be simplified, and the driving force is improved. The first driving lever 2 has a first connecting rod 21, an eccentric 22 and a first fastening 23. The eccentric 22 is fixedly connected to the main shaft. An eccentric 22 is mounted on the first connecting rod 21. The eccentric 22 is located at the end of the first connecting rod 21. The main shaft drives the eccentric wheel 22 to rotate, and the eccentric wheel 22 drives the first connecting rod 21 to reciprocate. The first fastening member 23 is fixedly connected to the first connecting rod 21. The first fastening member 23 is used to clamp and fasten the second transmission shaft 3. The first fastening member 23 is provided with an adjustment elongated hole 231. The adjustment elongated hole 231 has a third stopper 2311, and the first stopper 11 is distributed around the inner side of the adjustment elongated hole 231. One end of the first connecting rod 21 is fixedly installed with a connecting portion 211 with threads, and the nut 212 is installed after the connecting portion 211 passes through the adjusting elongated hole 231. At this time, the nut 212 abuts against the third stopper 2311 and the inner side of the adjustment elongated hole 231. The swing amplitude of the first fastening piece 23 can be changed by changing the positions of the nut 212 and the connecting part 211 on the adjusting strip hole 231, so that the lifting height of the mop wheel device 4 is changed, and the mop wheel device is suitable for clothes with different thicknesses and is very convenient. A fixed connection of the first fastening member 23 to the first connecting rod 21 is achieved. The second transmission shaft 3 is connected with the mop wheel device 4.

In the process of driving the mop wheel mechanism by the main shaft, vibration is inevitably generated, and further errors occur in the process of lifting and putting down the mop wheel. In order to solve this problem, the housing 1 of the present embodiment is integrally formed with a first position-limiting portion 11 and a second position-limiting portion 12.

The second transmission shaft 3 penetrates through the first limiting part 11 and the second limiting part 12 and then is connected with the mop wheel device 4.

One end of the second transmission shaft 3 connected with the first transmission rod 2 penetrates through the first limiting part 11, and the other end of the second transmission shaft 3 connected with the mop wheel device 4 is connected with a second limiting part 12. In addition, the second position-limiting portion 12 is provided with a position-limiting region 121; the other end is located in the confinement region 121. The mop wheel arrangement 4 comprises a second transmission rod 41. One end of the second transmission rod 41 is also located in the limiting area 121 and is fixedly connected with the other end of the second transmission shaft 3. The limiting region 121 is used for limiting the axial movement of the connecting position of the second transmission rod 41 and the second transmission shaft 3, so that the connecting stability is greatly enhanced. The first limiting part 11 and the second limiting part 12 are connected with the second transmission shaft 3 through bearings.

The first limiting part 11 and the second limiting part 12 of the embodiment are integrally connected with the machine shell 1, namely, the main body frame of the sewing machine limits the vibration of the mop wheel mechanism, so that the error caused by the vibration of the mop wheel mechanism can be greatly reduced, and the stability of the mop wheel mechanism installed on the sewing machine is greatly enhanced.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. 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 utility model as defined in the appended claims.

Although the terms first, second, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. A sewing machine comprises a machine shell (1) and a mop wheel mechanism, wherein a main shaft for driving sewing equipment to work is installed in the machine shell (1), and the mop wheel mechanism comprises a first connecting rod (21), an eccentric wheel (22), a second transmission shaft (3) and a mop wheel device (4); characterized in that the eccentric wheel (22) is fixedly connected with the main shaft; the eccentric wheel (22) is arranged on the first connecting rod (21); the main shaft drives the first connecting rod (21) to reciprocate through the eccentric wheel (22), and a first limiting part (11) is integrally formed on the machine shell (1); the second transmission shaft (3) penetrates through the first limiting part (11) and then is connected with the mop wheel device (4).

2. Sewing machine as in claim 1, characterized in that said mop wheel mechanism further comprises a first driving lever (2), said machine casing (1) being further provided with a second limit portion (12) integrally formed thereon; one end of the second transmission shaft (3) connected with the first transmission rod (2) penetrates through the first limiting part (11); the other end of the second transmission shaft (3) connected with the mop wheel device (4) is connected with the second limiting part (12).

3. The sewing machine of claim 2, wherein the second position-limiting portion (12) is provided with a position-limiting area (121); the other end is positioned in the limiting area (121); the mop wheel device (4) comprises a second transmission rod (41); the second transmission rod (41) is fixedly connected with the other end;

the limiting area (121) is used for limiting the axial movement of the second transmission rod (41) along the axial direction of the second transmission shaft.

4. A sewing machine according to claim 2 or 3, wherein the first (11) and second (12) stop portions are connected to the second drive shaft (3) by bearings.

5. Sewing machine as in claim 1, characterized in that the mop wheel mechanism also has a first fastening (23); the first fastening piece (23) is used for clamping and fastening the second transmission shaft (3); the first fastener (23) is fixedly connected with the first connecting rod (21).

6. A sewing machine as claimed in claim 5, characterized in that said first fastening member (23) is provided with an adjustment slot (231); the adjusting elongated hole (231) is provided with a third limiting part (2311); one end of the first connecting rod (21) is fixedly connected with a connecting part (211) with threads, and a nut (212) is installed on the connecting part (211); after the connecting part (211) passes through the adjusting elongated hole (231) and is in threaded connection with the nut (212), the nut (212) abuts against the third limiting part (2311).