CN210368229U

CN210368229U - Thread trimming mechanism and overedger thereof

Info

Publication number: CN210368229U
Application number: CN201921200863.8U
Authority: CN
Inventors: 刘袁; 赵林蔚; 徐永明; 符志诚; 王林峰
Original assignee: Jack Sewing Machine Co Ltd
Current assignee: Jack Technology Co Ltd
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2020-04-21
Anticipated expiration: 2029-07-26

Abstract

The utility model discloses thread trimming mechanism and overedger thereof, thread trimming mechanism include the arbor, the rigid coupling in the crank is connected to the arbor of arbor, with the thread trimming connecting rod that the crank cooperation is connected to the arbor, and is used for the drive the motor drive assembly of thread trimming connecting rod motion, be equipped with on the arbor connection crank and extend the convex part, thread trimming connecting rod slidable connect in articulate extension convex part is connected to the arbor, and receives the motor drive assembly drive and the thread trimming connecting rod of motion can pass through extend the convex part drive the crank is connected to the arbor and is rotated. The utility model uses the motor as the power source to drive the cutter shaft to rotate, thereby realizing the automatic drive of the cutter group on the overedger, improving the stability of the automatic drive of the cutter group by the overedger and being suitable for the long-time and high-frequency work of the overedger; meanwhile, the thread trimming mechanism generates less noise during integral working, has the function of noise reduction, and further meets the use requirements of people on the overedger.

Description

Thread trimming mechanism and overedger thereof

Technical Field

The utility model belongs to the technical field of the sewing, especially, relate to a thread trimming mechanism and overedger thereof.

Background

The overedger is one of sewing machines, and can be used for edge wrapping, and can also be used for sewing sportswear, underwear, knitted fabrics and the like. The thread trimming mechanism on the existing overlock machine is usually set as an automatic thread trimming mechanism, so that the overlock machine can save time and reduce labor force during working, and the working efficiency is improved.

At present, thread trimming mechanism on current hemming machine uses the electro-magnet as the power supply to the realization is to the automatic drive of arbor, however because this thread trimming mechanism uses the electro-magnet as the power supply, make this thread trimming mechanism after long-time, high-frequency work, the electro-magnet can appear generating heat weak phenomenon, the electro-magnet is in the electro-magnet wall shell activity of making a round trip from top to bottom in addition, electro-magnet and electro-magnet wall shell can produce great noise because of the striking, thereby make this hemming machine during operation holistic noise great.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a thread trimming mechanism and a overedger thereof, in which the thread trimming mechanism uses a motor as a power source for driving a knife shaft to rotate.

Specifically, a overedger, including the arbor, the rigid coupling in the arbor connecting crank of arbor, with the arbor is connected the trimming connecting rod that crank cooperation is connected, and is used for the drive the motor drive subassembly of trimming connecting rod motion, be equipped with on the arbor connecting crank and extend the convex part, trimming connecting rod slidable ground connect in the arbor is connected articulate extension convex part, and is received the motor drive subassembly drive and the trimming connecting rod of motion can pass through extend the convex part drive the arbor is connected the crank and is rotated.

As the utility model discloses a preferred scheme, extend and seted up the spout on the convex part, be equipped with the connecting piece on one side end of trimming connecting rod, wherein the connecting piece runs through the trimming connecting rod, just the connecting piece stretches out the part slidable ground of trimming connecting rod sets up extend on the spout of convex part.

As the preferred scheme of the utility model, the arbor part stretch into to in the arbor connecting crank to carry out spacing fixed with holding screw.

As a preferred scheme of the utility model, the motor driving assembly comprises a motor fixing seat, a driving motor arranged on the motor fixing seat, and a trimming push rod; the trimming push rod is arranged on the motor fixing seat through a linear bearing, the trimming push rod is connected with the trimming connecting rod, and the driving motor can drive the trimming connecting rod to rotate through the trimming push rod.

As the utility model discloses an optimal scheme, the trimming push rod stretches out linear bearing's one end is equipped with the U-shaped connecting seat, long row's groove has been seted up on the trimming connecting rod, the trimming push rod with through running through between the trimming connecting rod the U-shaped connecting seat with the fixed pin in long row's groove is connected.

As the utility model discloses an optimized scheme, the last cushion ring that has cup jointed of trimming push rod, a side end face of cushion ring supports and leans on linear bearing is last.

As the utility model discloses a preferred scheme, the trimming connecting rod rotationally connect in through first axle position screw motor fixing base, just the trimming push rod can pass through the drive of U-shaped connecting seat the trimming connecting rod winds first axle position screw rotates.

As the utility model discloses an optimized scheme, the trimming push rod stretches out be fixed with the locating part on linear bearing's the other end, wherein the elastic component has been cup jointed on the trimming push rod, the one end of elastic component supports and leans on the motor fixing base, the other end supports and leans on the locating part.

As the utility model discloses a preferred scheme, the trimming push rod is radially rotationally connected with the gyro wheel through second axial position screw, be equipped with the cam in driving motor's pivot portion, the cam butt in the gyro wheel, just driving motor can pass through roller drive the trimming push rod do for linear bearing's motion.

The utility model discloses still ask the overedger including using above-mentioned thread trimming mechanism, including the overedger body, and locate thread trimming mechanism on the overedger body.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

the utility model provides a thread trimming mechanism and overedger thereof, which uses the motor as the power source for driving the cutter shaft to rotate, thereby realizing the automatic driving of the cutter group on the overedger, improving the stability of the automatic driving of the cutter group by the overedger, and being suitable for the overedger to work for a long time and with high frequency; meanwhile, the thread trimming mechanism generates less noise during integral working, has the function of noise reduction, and further meets the use requirements of people on the overedger.

Drawings

Fig. 1 is a schematic structural view of an overlock machine according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a thread trimming mechanism according to an embodiment of the present invention.

Fig. 3 is an exploded view of a portion of the thread trimming mechanism of fig. 2.

Fig. 4 is an exploded view of the remainder of the structure of the thread trimming mechanism of fig. 2.

Wherein, 10, the overedger body; 11. a knife group; 12. a cutter group fixing seat; 20. a thread trimming mechanism; 210. a set screw; 21. a cutter shaft; 22. the cutter shaft is connected with a crank; 221. an extending projection; 222. a chute; 23. trimming connecting rods; 231. a connecting member; 232. a long row of grooves; 241. a motor fixing seat; 242. a drive motor; 243. A thread cutting push rod; 2431. a U-shaped connecting seat; 2432. a screw; 101. tightening the screw; 102. a linear bearing; 103. a first axial screw; 104. a fixing pin; 105. a limiting member; 106. an elastic member; 107. a cushion washer; 201. a second axial screw; 202. a roller; 203. a cam.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 to 4, an overlock machine according to an embodiment of the present invention includes an overlock machine body 10 and a thread trimming mechanism 20 disposed on the overlock machine body 10.

In this embodiment, the overedger body 10 is provided with a knife tackle 11, a knife tackle connecting crank and a knife tackle fixing seat 12, the knife tackle connecting crank is arranged in the knife tackle fixing seat 12, wherein one end of the knife tackle connecting crank is connected with the knife tackle 11, and the other end is connected with a knife shaft 21 of the thread trimming mechanism 20, so that the knife shaft 21 can drive the knife tackle 11 under the transmission of the knife tackle connecting crank. It should be noted that the connection relationship among the knife shaft 21, the knife group connecting crank, and the knife group 11 is the structure of the existing overedger, and will not be described herein.

Referring to fig. 2, the thread trimming mechanism 20 of the present embodiment includes a cutter shaft connecting crank 22, a thread trimming connecting rod 23 and a motor driving assembly, wherein the cutter shaft connecting crank 22 is fixedly connected to the cutter shaft 21, the thread trimming connecting rod 23 is connected to the cutter shaft connecting crank 22, and the motor driving assembly can drive the cutter shaft connecting crank 22 to rotate through the thread trimming connecting rod 23.

In the present embodiment, the knife shaft 21 partially extends into the knife shaft connecting crank 22 and is fixed by the set screws 101, and specifically, the knife shaft 21 is fixed by the knife shaft connecting crank 22 by two set screws 101 partially extending into the knife shaft connecting crank 22. The cutter shaft 21 and the cutter shaft connecting crank 22 of the thread trimming mechanism 20 of the present embodiment can be disassembled and assembled by screwing the set screw 101, so that the assembly position between the cutter shaft 21 and the cutter shaft connecting crank 22 can be conveniently adjusted, and the thread trimming operation can be realized when the thread trimming mechanism 20 of the present embodiment drives the cutter set 11 to move.

The extension convex part 221 is arranged on the cutter shaft connecting crank 22, the wire cutting connecting rod 23 is slidably connected to the extension convex part 221 of the cutter shaft connecting crank 22, and the wire cutting connecting rod 23 driven by the motor driving component to move can realize the rotation driving of the cutter shaft connecting crank 22 through the sliding fit between the wire cutting connecting rod 23 and the extension table part 221, so that when the wire cutting mechanism of the embodiment works, the cutter shaft 21 is driven to rotate by the motor driving component.

Specifically, the extending protrusion 221 is provided with a sliding slot 222, a connecting member 231 is disposed on an end portion of one side of the trimming connecting rod 23, the connecting member 231 penetrates through the trimming connecting rod 23, and a portion of the connecting member 231 extending out of the trimming connecting rod 23 is slidably disposed on the sliding slot 222 of the extending protrusion 221, so as to achieve the sliding connection between the trimming connecting rod 23 and the arbor connecting crank 22. In the present embodiment, the connection member 231 is a screw.

In this embodiment, the motor driving assembly includes a motor fixing base 241, a driving motor 242 disposed on the motor fixing base 241, and a trimming push rod 243; the thread cutting push rod 243 is arranged on the motor fixing seat 241 through the linear bearing 102, so as to ensure the verticality of the movement of the thread cutting push rod 243 when driven by the driving motor 242. The thread cutting push rod 243 is connected to the thread cutting link 23, and the driving motor 242 can drive the thread cutting link 23 to move through the thread cutting push rod 243. That is, the motor drive assembly of the present embodiment can drive the trimming link 23 in the vertical direction.

In this embodiment, the thread trimming push rod 243 is radially and rotatably connected with a roller 202 through a second axial fixing screw 201, a cam 203 is disposed on a rotating shaft portion of the driving motor 242, the cam 203 abuts against the roller 202, and the driving motor 242 can drive the thread trimming push rod 243 to move on the linear bearing 102 through the roller 202. That is, the driving motor 242 of the present embodiment drives the trimming push rod 243 in the vertical direction by the contact engagement between the cam 203 and the roller 202.

In this embodiment, a U-shaped connecting seat 2431 is disposed at one end of the trimming push rod 243 extending out of the linear bearing 102, a long row groove 232 is disposed on the trimming connecting rod 23, and the trimming push rod 243 and the trimming connecting rod 23 are connected through a fixing pin 104 penetrating through the U-shaped connecting seat 2431 and the long row groove 232 on the trimming connecting rod 23. It should be noted that the fixing pin 104 penetrating through the U-shaped connecting seat 2431 and the long row of grooves 232 on the trimming connecting rod 23 can be fixed on the U-shaped connecting seat 2431 by a screw 2432.

In this embodiment, the thread trimming link 23 is rotatably connected to the motor fixing base 241 by a first axial screw 103, and the thread trimming push rod 243 can drive the thread trimming link 23 to rotate around the first axial screw 103 by the U-shaped connecting base 2431.

The groove width of the long row of grooves 232 on the trimming connecting rod 23 is greater than the outer diameter of the fixing pin 104, so that the fixing pin 104 can move along the groove width direction of the long row of grooves 232 on the trimming connecting rod 23, and the positions of the U-shaped connecting seat 2431 and the trimming connecting rod 23 when the two are assembled with each other can be adjusted, thereby ensuring that the trimming connecting rod 23 is driven to rotate when the trimming pushing rod 243 moves relative to the linear bearing 102.

A limiting member 105 is fixed to the other end of the trimming push rod 243 extending out of the linear bearing 102, wherein an elastic member 106 is sleeved on the trimming push rod 243, one end of the elastic member 106 abuts against the motor fixing seat 241, and the other end abuts against the limiting member 105, so as to provide an acting force when the trimming push rod 243 is reset, that is, when the driving motor 242 drives the trimming push rod 243 to move upward relative to the linear bearing 102 and drive the trimming connecting rod 23, the trimming push rod 432 drives the limiting member 105 to compress the elastic member 106; when the rotating shaft of the driving motor 242 rotates in the opposite direction, the elastic member 106 provides the power for the trimming pushing rod 243 to move downward relative to the linear bearing 102.

Preferably, the elastic member 106 is a compression spring, the limiting member 105 is a lock nut, and the two locking nuts are disposed on the trimming push rod 243 in a threaded manner, and preferably, the limiting member 105 is two lock nuts, and the two lock nuts are screwed to each other, so as to prevent the lock nuts from being loosened when the lock nuts are connected to the trimming push rod 243.

As a preferred embodiment of the present invention, the trimming push rod 243 is sleeved with a cushion washer 107, a side end surface of the cushion washer 107 is in butt fit with the linear bearing 102, so that when the trimming push rod 243 is driven by the driving motor 242 to reciprocate relative to the linear bearing 102, a portion of the trimming push rod 243, which is used for abutting against the linear bearing 102, can collide with the linear bearing 102 through the cushion washer 107, thereby reducing noise. The cushion gasket 107 is preferably made of a rubber material.

As can be seen from the above, the driving motor 242, the trimming push rod 243 and the trimming connecting rod 23 in this embodiment are all disposed on the motor fixing seat 241, so as to achieve the modularized structural arrangement of the trimming mechanism, and the motor fixing seat 241 can be detachably fixed on the overedger body 10 through the fixing screw 210, so that the overedger has the effects of facilitating production and installation, and further reducing the production cost of the overedger applying the trimming mechanism.

To sum up, the utility model provides a thread trimming mechanism and overedger thereof uses the motor as the power supply, is used for driving the arbor to rotate, realizes the automatic drive to the cutter set on the overedger with this to improve the stability of the automatic drive of the cutter set of the overedger, is suitable for the long-time and high-frequency work of the overedger; meanwhile, the thread trimming mechanism generates less noise during integral working, has the function of noise reduction, and further meets the use requirements of people on the overedger.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a thread trimming mechanism which characterized in that: including the arbor, the rigid coupling in the arbor of arbor is connected the crank, with the arbor is connected the trimming connecting rod that the crank cooperation is connected, and is used for the drive the motor drive subassembly of trimming connecting rod motion, be equipped with on the arbor connecting crank and extend the convex part, trimming connecting rod slidable connect in the articulate convex part that extends is connected to the arbor, and receives motor drive subassembly drive and the trimming connecting rod of motion can pass through extend the convex part drive the crank is connected to the arbor rotates.

2. The thread trimming mechanism of claim 1, wherein: the extension convex part is provided with a sliding groove, the end part of one side of the trimming connecting rod is provided with a connecting piece, the connecting piece penetrates through the trimming connecting rod, and the part of the connecting piece extending out of the trimming connecting rod is slidably arranged on the sliding groove of the extension convex part.

3. The thread trimming mechanism of claim 1, wherein: the cutter shaft part extends into the cutter shaft connecting crank and is limited and fixed by a set screw.

4. The thread trimming mechanism of claim 1, wherein: the motor driving assembly comprises a motor fixing seat, a driving motor arranged on the motor fixing seat and a trimming push rod; the trimming push rod is arranged on the motor fixing seat through a linear bearing, the trimming push rod is connected with the trimming connecting rod, and the driving motor can drive the trimming connecting rod to rotate through the trimming push rod.

5. The thread trimming mechanism of claim 4, wherein: the wire cutting device is characterized in that a U-shaped connecting seat is arranged at one end, extending out of the linear bearing, of the wire cutting push rod, a long row groove is formed in the wire cutting connecting rod, and the wire cutting push rod is connected with the wire cutting connecting rod through a fixing pin penetrating through the U-shaped connecting seat and the long row groove.

6. The thread trimming mechanism of claim 5, wherein: and a buffer washer is sleeved on the trimming push rod, and one side end face of the buffer washer abuts against the linear bearing.

7. The thread trimming mechanism of claim 5, wherein: the wire cutting connecting rod is rotatably connected to the motor fixing seat through a first axial screw, and the wire cutting push rod can drive the wire cutting connecting rod to rotate around the first axial screw through the U-shaped connecting seat.

8. The thread trimming mechanism of claim 4, wherein: and a limiting part is fixed at the other end of the trimming push rod extending out of the linear bearing, an elastic part is sleeved on the trimming push rod, one end of the elastic part is abutted against the motor fixing seat, and the other end of the elastic part is abutted against the limiting part.

9. The thread trimming mechanism of claim 4, wherein: the trimming push rod is radially and rotatably connected with a roller through a second axial screw, a cam is arranged on a rotating shaft portion of the driving motor and is abutted against the roller, and the driving motor can drive the trimming push rod to move relative to the linear bearing through the roller.

10. The utility model provides an overedger, includes the overedger body, and locates thread trimming mechanism on the overedger body, its characterized in that: the thread trimming mechanism is as claimed in any one of claims 1 to 9.