CN213866725U

CN213866725U - Feeding device of sewing machine

Info

Publication number: CN213866725U
Application number: CN202022245602.7U
Authority: CN
Inventors: 张海宏
Original assignee: Taizhou Senke Sewing Machine Co ltd
Current assignee: Taizhou Senke Sewing Machine Co ltd
Priority date: 2020-10-09
Filing date: 2020-10-09
Publication date: 2021-08-03
Anticipated expiration: 2030-10-09

Abstract

The utility model belongs to the technical field of the sewing machine, concretely relates to sewing machine material feeding unit, including the motor support, the first motor of lower extreme installation of motor support, first motor are connected with rotatable pendulum seat, and the lower extreme of pendulum seat is provided with the gyro wheel, is provided with the drive mechanism who is used for making first motor be connected with the gyro wheel in the pendulum seat, and drive mechanism is used for driving the gyro wheel and rotates, the upper end of motor support is provided with and is used for connecting and control pendulum seat wobbling elevating part, the utility model discloses a design of pendulum seat can be through the swing motion of the whole pendulum seat of elevating part control, and because belt drive mechanism sets up in the pendulum seat, consequently at pendulum seat wobbling in-process, can not cause other influences such as buckling, rupture to the belt, therefore life time can be longer.

Description

Feeding device of sewing machine

Technical Field

The utility model relates to a sewing machine technical field refers in particular to a sewing machine material feeding unit.

Background

In the sewing machine used at present, in order to improve the cloth pushing force of the sewing machine to reduce the crease generated at the sewing thread part or to smoothly push and sew when being applied to thick cloth sewing, a cloth pulling roller is arranged behind a cloth pressing foot or matched with a bottom plate group to be arranged on the table-board of the sewing machine, because of the different thicknesses of the sewed objects, the cloth pulling roller is used as an auxiliary pulling belt for applying force to the cloth feeding teeth or the cloth pushing force of a feeding wheel in the sewing of the sewing machine, in addition to providing the second cloth pulling force, the sewed objects and the sewing threads in the sewing are subjected to crease tightening action to reduce the generation of the sewing thread part, so the design of the bottom plate group of the cloth pulling roller of the sewing machine with good design can improve the sewing operation and sewing quality.

For example, in the chinese utility model, the patent No. CN2007200003344 discloses an improved structure of rolling feeding for a sewing machine, wherein the roller frame is combined with a power transmission assembly, the power transmission assembly comprises two belt pulleys and a belt pulley set, one belt pulley is connected with the transmission mechanism, the other belt pulley is connected with the feeding roller assembly, and a belt is wound between the two belt pulleys.

In the process of controlling the lifting or pressing of the feeding roller by the regulating mechanism, the structure of the belt is affected, and the belt is easy to damage and break after long-time use, so that the structure needs to be further improved.

Disclosure of Invention

The utility model aims at providing a sewing machine material feeding unit through the pendulum seat, solves the problem of using the easy rupture of lower belt for a long time.

The purpose of the utility model is realized like this: the utility model provides a sewing machine material feeding unit, includes the motor support, the first motor of motor support's lower extreme installation, and first motor is connected with rotatable pendulum seat, and the lower extreme of pendulum seat is provided with the gyro wheel, is provided with the drive mechanism who is used for making first motor and gyro wheel be connected in the pendulum seat, and drive mechanism is used for driving the gyro wheel and rotates, the upper end of motor support is provided with and is used for connecting and control the wobbling lifting unit of pendulum seat.

Preferably, the lifting component comprises a lifting power source, the output end of the lifting power source is provided with a connecting rod, and the other end of the connecting rod is connected with the swing seat.

Preferably, the lifting power source is a second motor, an eccentric block is mounted on the periphery of an output shaft of the second motor, the eccentric block is connected with a connecting rod, a connecting pull head is arranged at the lower end of the connecting rod, a first connecting hole is formed in the connecting pull head, a connecting portion is formed at the upper end of the swing seat, a second connecting hole is formed in the connecting portion, and a first fastener penetrates through the first connecting hole and the second connecting hole to enable the connecting pull head to be connected with the swing seat.

Preferably, the transmission mechanism comprises a first synchronous belt wheel and a second synchronous belt wheel which are respectively arranged at two ends of the swing seat, a belt is connected between the first synchronous belt wheel and the second synchronous belt wheel, and an output shaft of the first motor is connected with and drives the first synchronous belt wheel.

Preferably, a wheel mandrel is installed in the second synchronous pulley, and one end of the wheel mandrel extends out of the swinging seat and is connected with the roller.

Preferably, the wheel mandrel is fixedly connected with the second synchronous pulley, a mounting bearing is arranged between one side of the wheel mandrel and the swing seat, a mounting table for mounting a roller is formed on the periphery of the wheel mandrel, and one end of the wheel mandrel penetrates through the roller and is connected with a nut.

Preferably, a mounting seat is arranged between the other side of the wheel mandrel and the swing seat, and a bearing blocking sheet and a bearing gasket are arranged between the mounting bearing and the second synchronous pulley.

Preferably, a rotating bearing is arranged between the swing seat and the motor support, a shaft sleeve is installed in the rotating bearing, and two ends of the shaft sleeve respectively abut against between the end face of the first motor and the end face of the first synchronous pulley.

Preferably, the lower end of the motor support is formed with a swinging part, an arc-shaped groove for moving the second fastening piece is formed in the swinging part, and one end of the second fastening piece penetrates through the arc-shaped groove and is connected with the swinging seat.

Compared with the prior art, the utility model outstanding and profitable technological effect is:

the utility model discloses a swing motion of the whole swing seat of lifting unit control can be passed through in the design of swing seat, and because belt drive mechanism sets up in the swing seat, consequently at swing seat wobbling in-process, can not cause other influences such as buckling, rupture to the belt, therefore life time can be longer.

Drawings

Fig. 1 is a schematic perspective view of a feeding device.

Fig. 2 is a schematic structural view of the feeding device with a part of the housing removed.

Fig. 3 is a schematic structural view of the lifting member when separated from the feeding device.

Fig. 4 is a side view of the feeding device.

Fig. 5 is a sectional view of the structure at a-a in fig. 4.

Fig. 6 is a sectional view of the structure at B-B in fig. 4.

Reference numerals: 1-a motor support; 2-a first electric machine; 3-swinging the seat; 4-a roller; 5-a rotating bearing; 6-shaft sleeve; 7-a lifting power source; 8-a connecting rod; 9-eccentric block; 11-connecting a slider; 12-a first connection hole; 13-a connecting part; 14-a second connection hole; 15-fastener one; 16-a synchronous pulley I; 17-synchronous pulley two; 18-a belt; 19-wheel spindle; 20-a swing part; 21-an arc-shaped groove; 22-fastener two; 23-mounting a bearing; 24-a mounting table; 25-a nut; 26-a mounting seat; 27-a bearing shield; 28-bearing washer.

Detailed Description

The following describes the present invention in further detail with reference to fig. 1-6.

As shown in FIG. 1, a feeding device for a sewing machine has a motor bracket 1 for fixing to the sewing machine, the motor bracket 1 is fixed to a side surface of the sewing machine by a fastening member, a first motor 2 is arranged at the lower end of the motor bracket 1, the output end of the first motor 2 is provided with a rotatable swing seat 3, the lower end of the swing seat 3 is provided with a roller 4, the swing seat 3 is internally provided with a transmission mechanism for connecting the first motor 2 with the roller 4, the first motor 2 drives the roller 4 to rotate through the transmission mechanism, therefore, auxiliary feeding is realized, the upper end of the motor support 1 is provided with a lifting component for connecting and controlling the swing of the swing seat 3, the lifting component can directly drive the swing seat 3 to swing by adopting an air cylinder as a lifting power source or drive the lifting swing seat 3 to swing by adopting a motor and a transmission mechanism which converts rotary motion into straight lines, such as a crank-link mechanism, a spiral rotating mechanism or a cam rotating mechanism and the like.

The utility model discloses in, be through the swing motion of the whole swing seat 3 of lifting unit control, and because belt drive mechanism sets up in swing seat 3, consequently at the 3 wobbling in-processes of swing seat, can not cause other influences such as buckling, rupture to the belt, consequently life time can be longer.

With specific reference to fig. 1, next, a specific structure of the lifting component is further described, where the lifting component includes a lifting power source 7, a connecting rod 8 is installed at an output end of the lifting power source 7, the other end of the connecting rod 8 is connected with the swing seat 3, and the lifting power source 7 is connected with the swing seat 3 through the connecting rod 8 and drives the swing seat 3 to swing.

In the specific drawing of fig. 2, the lifting power source 7 is a second motor, an eccentric block 9 is installed on the periphery of an output shaft of the second motor, the eccentric block 9 is connected with a connecting rod 8, the second motor drives the connecting rod 8 to reciprocate through the eccentric block 9 when rotating, a connecting pull head 11 is arranged at the lower end of the connecting rod 8, and the connecting rod 8 is connected with the swing seat 3 through the connecting pull head 11.

Referring to fig. 3, a first connecting hole 12 is formed in the connecting slider 11, a connecting portion 13 is formed at the upper end of the swing seat 3, a second connecting hole 14 is formed in the connecting portion 13, and a first fastening member 15 penetrates through the first connecting hole 12 and the second connecting hole 14 to rotatably connect the connecting slider 11 and the swing seat 3, so that when the connecting rod 8 reciprocates, the connecting slider 11 drives the swing seat 3 to swing up and down, the roller 4 moves up and down, leaves or is close to a workbench, and feeding is achieved.

With specific reference to fig. 2, the specific structure of the transmission mechanism is further described, the transmission mechanism includes a first synchronous pulley 16 and a second synchronous pulley 17 respectively disposed at two ends of the swing seat 3, a belt 18 is connected between the first synchronous pulley 16 and the second synchronous pulley 17, the first synchronous pulley 16 is connected to and driven by an output shaft of the first motor 2, and the first synchronous pulley 16 drives the second synchronous pulley 17 to rotate simultaneously through the belt 18.

With reference to fig. 1 and 2, a wheel spindle 19 is installed in the second synchronous pulley 17, and one end of the wheel spindle 19 extends out of the swing seat 3 and is connected with the roller 4, so that the second synchronous pulley 17 drives the roller 4 to rotate through the wheel spindle 19, thereby achieving auxiliary transportation of the cloth below.

Specifically, referring to fig. 6, the wheel core shaft 19 is fixedly connected with the second synchronous pulley 17, an interference fit or a key groove fit is adopted between the wheel core shaft 19 and the second synchronous pulley 17, a mounting bearing 23 is arranged between one side of the wheel core shaft 19 and the swing seat 3, so that the stability of the wheel core shaft 19 during rotation is improved, a mounting table 24 for mounting the roller 4 is formed on the periphery of the wheel core shaft 19, one end of the wheel core shaft 19 penetrates through the roller 4 and is connected with a nut 25, the roller 4 is fixed between the mounting table 24 and the nut 5 after the nut 5 is screwed, and the roller 4 is driven to rotate simultaneously by the wheel core shaft 19 when the synchronous pulley 17 rotates.

Referring to fig. 6 in particular, an installation seat 26 is arranged between the other side of the wheel spindle 19 and the swing seat 3, so as to further improve the stability of the wheel spindle 19 during rotation, and a bearing blocking sheet 27 and a bearing washer 28 are arranged between the installation bearing 23 and the second synchronous pulley 17, so as to limit the position of the installation bearing 23.

Specifically, referring to fig. 5, a rotating bearing 5 is arranged between the swing seat 3 and the motor support 1, a shaft sleeve 6 is installed in the rotating bearing 5, two ends of the shaft sleeve 6 respectively abut against between an end face of the first motor 2 and an end face of the first synchronous pulley 16, so that the swing seat 3 rotates more stably, and an output shaft of the first motor 2 penetrates through the motor support 1 and is connected with the first synchronous pulley 16.

Specifically, referring to fig. 3, a swing portion 20 is formed at the lower end of the motor support 1, an arc-shaped groove 21 for moving a second fastening member 22 is formed in the swing portion 20, one end of the second fastening member 22 penetrates through the arc-shaped groove 21 and is connected with the swing seat 3, when the second motor drives the swing seat 3 to swing, the swing seat 3 will move in the arc-shaped groove 21 through the second fastening member 22, and therefore stability of the swing seat 3 in moving is improved.

The working principle is as follows: firstly, looking at fig. 1, in the sewing process, firstly, the second motor operates, then the connecting rod 8 drives the swing seat 3 to swing downwards, so that the roller 4 is attached to the upper side of the cloth, then looking at fig. 2, at the moment, the first motor 2 rotates to drive the first synchronous belt wheel 16 to rotate, the first synchronous belt wheel 16 drives the second synchronous belt wheel 17 to rotate through the belt 18, and the second synchronous belt wheel 17 drives the roller 4 to rotate through the wheel core shaft 19, so that the cloth below is transported.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a sewing machine material feeding unit which characterized in that: including motor support (1), first motor (2) of the lower extreme installation of motor support (1), first motor (2) are connected with rotatable pendulum seat (3), and the lower extreme of pendulum seat (3) is provided with gyro wheel (4), are provided with in the pendulum seat (3) to be used for making first motor (2) and gyro wheel (4) be connected drive mechanism, and drive mechanism is used for driving gyro wheel (4) to rotate, the upper end of motor support (1) is provided with and is used for connecting and controls the wobbling lifting unit of pendulum seat (3).

2. The sewing machine feeding device according to claim 1, wherein: the lifting component comprises a lifting power source (7), a connecting rod (8) is installed at the output end of the lifting power source (7), and the other end of the connecting rod (8) is connected with the swing seat (3).

3. The sewing machine feeding device according to claim 2, characterized in that: the lifting power source (7) is a second motor, an eccentric block (9) is installed on the periphery of an output shaft of the second motor, the eccentric block (9) is connected with a connecting rod (8), a connecting pull head (11) is arranged at the lower end of the connecting rod (8), a first connecting hole (12) is formed in the connecting pull head (11), a connecting portion (13) is formed in the upper end of the swing seat (3), a second connecting hole (14) is formed in the connecting portion (13), and a first fastener (15) penetrates through the first connecting hole (12) and the second connecting hole (14) to enable the connecting pull head (11) to be connected with the swing seat (3).

4. The sewing machine feeding device according to claim 1, wherein: the transmission mechanism comprises a first synchronous belt wheel (16) and a second synchronous belt wheel (17) which are respectively arranged at two ends of the swing seat (3), a belt (18) is connected between the first synchronous belt wheel (16) and the second synchronous belt wheel (17), and an output shaft of the first motor (2) is connected with and drives the first synchronous belt wheel (16).

5. The sewing machine feeding device according to claim 4, wherein: a wheel mandrel (19) is arranged in the second synchronous pulley (17), and one end of the wheel mandrel (19) extends out of the swing seat (3) and is connected with the roller (4).

6. The sewing machine feeding device according to claim 5, wherein: the wheel core shaft (19) is fixedly connected with the second synchronous belt wheel (17), an installation bearing (23) is arranged between one side of the wheel core shaft (19) and the swing seat (3), an installation table (24) used for installing the roller (4) is formed on the periphery of the wheel core shaft (19), and one end of the wheel core shaft (19) penetrates through the roller (4) and is connected with a nut (25).

7. The sewing machine feeding device according to claim 6, wherein: an installation seat (26) is arranged between the other side of the wheel core shaft (19) and the swing seat (3), and a bearing blocking sheet (27) and a bearing gasket (28) are arranged between the installation bearing (23) and the second synchronous pulley (17).

8. The sewing machine feeding device according to claim 1, wherein: a rotating bearing (5) is arranged between the swing seat (3) and the motor support (1), a shaft sleeve (6) is installed in the rotating bearing (5), and two ends of the shaft sleeve (6) are respectively abutted between the end face of the first motor (2) and the end face of the first synchronous belt pulley (16).

9. The sewing machine feeding device according to claim 1, wherein: the lower extreme shaping of motor support (1) has swing portion (20), has seted up in swing portion (20) and has supplied the arc wall (21) that fastener two (22) removed, and the one end of fastener two (22) passes arc wall (21) and is connected with swing seat (3).