KR101226417B1 - Yarn feeder for flat knitting machines - Google Patents

Abstract

PURPOSE: A yarn feeder for a flat knitting machine is provided to simplify a structure, to save production and assembling cost, and to reduce malfunction possibility. CONSTITUTION: A flat knitting machine comprises one or more guide tracks(10) of a yarn feeder, which horizontally move the yarn feeder(20). The yarn feeder comprises: a baseboard(21) which is slidably connected to the guide tracks; and a first locking arm(22), a second locking arm(23), and a yarn feeding unit(24) which are placed on the baseboard. The first locking arm has a first pivot end portion(221) and a first press end portion(222). The second locking arm has a second pivot end portion(231) and a second press end portion(232). The yarn feeding unit has a yarn feeding arm(25), a first connection bar(241), and a second connection bar(242).

Description

Thread feeder for flat knitting machine {YARN FEEDER FOR FLAT KNITTING MACHINES}

The present invention relates to a yarn feeder for flat knitting machines, and more particularly to a connection type yarn feeder for flat knitting machines.

Among the knitting of conventional flat knitting machines, a plurality of intarsia thread feeders are generally employed to form specific intas in the fabric. In order to effectively knit complex intasha combinations on the fabric, flat knitting machines mainly use computers to control the movement and operation of the intasha thread feeder. In order to prevent the yarn supplied through the yarn feed hole of the yarn thread feeder from being caught during the movement of the yarn thread feeder or after the operation of the yarn yarn feeder is caught by the low yarn needle, the yarn yarn is produced. It is not only designed to provide a state of feeding the thread through the thread supply hole to the knitting needle for the Intasha knitting, but also to move the thread feeding device away from the above-described position so that the knitting needle does not hang the thread from the thread supply hole. It is designed to include other states.

Conventional Intasha thread feeders employ a method of swinging the thread to move the knitting needle further away from the thread feed hole. For example, U. S. Patent No. 6,981, 393 discloses a yarn feeder for flat knitting machines comprising a thread feeder case slidable on a thread guide rail at the top of a needle bed and a drive device to selectively perform a connecting motion. The yarn feeder case has a switch device capable of swinging the yarn feed hole to switch between the yarn feed position and the standby position. The switch device can also swing in the yarn feeder case and move the pivot rod up and down to support the middle of the yarn feed rod. The thread feed hole is formed at the lower end of the thread feed rod, while the middle part forms a swing actuating part, and the upper part forms a press part for overcoming lifting elasticity to lower the thread supply hole to the thread feed position. It is also provided with a setting device for setting to swing back the swing actuator. When the thread feed hole is located at the thread feed position and the thread feed rod is moved downward, the swing actuating portion set by the setting device is switched upward to return.

In addition, the aforementioned technique applies to pressing the rod selected by the seal feed rod to be inclined swing, and there are other techniques for moving the seal feed rod, such as using a gear for driving movement of the seal feed rod. EP 1,788,132 discloses a thread feed arm which can be moved longitudinally along a thread feeder guide track via a transmission pulley mounted in a triangular slide rack and reciprocating between the thread feed position and one or more thread feed stop positions. A yarn feeder for flat knitting machine is provided. The thread feeder includes an adjusting part for at least one thread feeder arm having a gear acting on the second adjusting part by a pinion for adjusting the movement of the thread feeding arm.

The above-mentioned prior arts apply various structures for driving the seal supply arm. Operation of conventional Intasha seal feeders is complex and the complex type of adjustment components are designed and assembled to swing the seal feeder arm. Thus, production and assembly costs are expensive. Furthermore, since the number of adjusting parts is large, collisions between the parts are likely to occur, which may prevent the operation of the thread feeder.

The main object of the present invention is to solve the problem of the conventional Insasha thread feeder, which is complicated by the complicated structure and the resultant cost of including many parts.

In order to achieve the above object of the present invention, there is provided a yarn feeder for a flat knitting machine positioned on the yarn feeder guide track and movable horizontally. The yarn feeder includes a baseboard, a first lock arm, a second lock arm and a yarn feed unit located slidably connected to the yarn feeder guide track. The first locking arm and the second locking arm each have a first pivot end and a second pivot end connected to the base board, and with respect to the first pivot end and the second pivot end acting as a support point. Each comprising a first press end and a second press end to which a horizontal force is applied to swing obliquely. The seal supply unit is a seal supply arm positioned between the first lock arm and the second lock arm, and a first connection bar for hinge-connecting the seal supply arm and the first lock arm to simultaneously move the seal supply arm. And a second connecting bar hingedly connecting the arm and the second locking arm to move simultaneously. The seal supply arm may be connected to the seal supply position through which the first press end of the first lock arm or the second press end of the second lock arm does not swing, and through the first connection bar and the second connection bar. And at least one yarn feed stop position in which the first or second press end swings under a horizontal force causing the yarn feed arms to tilt simultaneously.

In one embodiment the seal supply arm includes a guide portion and the base board includes a guide track corresponding to the guide portion.

In one embodiment the guide track comprises two moving parts and a holding part arranged between the two moving parts, the holding part having a concave structure.

In one embodiment the guide portion is a guide roller.

In one embodiment the guide track is located in a guide bump against the guide portion.

In one embodiment the base board comprises an elastic piece and the seal supply arm comprises a butting member for pressing the elastic piece against the guide portion against the guide track.

In one embodiment the first press end comprises a first switch portion, the second press end comprises a second switch portion, and the first and second switch portions are connected by a connecting spring.

In one embodiment the base board comprises a first positioning bolt and a second positioning bolt, wherein the first switch portion and the second switch portion are each of the first positioning bolt when the seal supply arm is in the seal supply position. And a butting surface against the second positioning bolt, and a latching surface applied to the first positioning bolt and the second positioning bolt when the yarn feeder is in the yarn feeding stop position.

In one embodiment the seal supply arm includes a sliding slot and the base board includes a fastening member inserted into the sliding slot to limit the swing displacement of the seal supply arm.

In one embodiment there is provided a cover lid connected to the base board, the cover lid being formed to cover the first lock arm, the second lock arm and the seal supply unit.

The thread supply arm of the present invention swings in an inclined state by a connecting bar located on a base board so that the thread supply arm can be switched between the thread supply position and the thread supply stop position, thereby providing a number of advantages. .

1. The structure of the seal supply arm is designed to swing inclined by the seal feeder, which can reduce production and assembly costs.

2. The structure formed so that the seal supply arm swings obliquely prevents the collision of the components so as not to affect the normal operation of the components and reduce the possibility of malfunction.

In addition to the additional object, the above features and advantages of the present invention will become more apparent from the following detailed description with reference to the accompanying drawings.

1 is a perspective view of an embodiment of the present invention.
2 is an exploded view of one embodiment of the present invention.
3A and 3B are schematic diagrams illustrating an operation of an embodiment of the present invention.

1 and 2 show an embodiment of the yarn feeder for flat knitting machine of the present invention. The flat knitting machine includes one or more yarn feeder guide tracks 10 which cause the yarn feeder 20 to slide horizontally to the position where the yarn is fed. The thread feeder 20 may include a baseboard 21 slidably connected to the thread feeder guide track 10, a first rocking arm 22 positioned on the baseboard 21, And a second lock arm 23 and a seal supply unit 24. The first locking arm 22 has a first press end 222 which is horizontally forced to swing against a first pivot end 221 connected to the base board 21 and a first pivot end 221 functioning as a support point. Equipped. The second locking arm 23 has a second press end which receives another horizontal force to swing against the second pivot end 231 connected to the base board 21 and the second pivot end 231 acting as a support point. 232). The seal supply unit 24 is hinged so that the seal supply arm 25 located between the first and second lock arms 22 and 23 and the seal supply arm 25 and the first lock arm 22 move simultaneously. A first connecting bar 241 for connecting and a second connecting bar 242 for hinge connecting the seal supply arm 25 and the second locking arm 23 to move simultaneously. The thread supply arm 25 is a thread supply position where the first press end 222 of the first lock arm 22 or the second press end 232 of the second lock arm 23 does not swing, and the first And one or more thread feed interruption positions for causing the first or second press ends 222, 223 to swing under a horizontal force that causes the thread feed arm 25 to tilt by the second connecting bars 241, 242. do. The seal supply arm 25 has a sliding slot 253. The base board 21 has a fastening member 30 inserted into the sliding slot 253 to limit the swing displacement of the seal supply arm 25. The seal supply arm 25 swings against a fastening member that serves as a support point between the seal supply position and the seal supply stop position.

In order for the thread supply arm 25 to constantly move between the thread supply position and the thread supply stop position, the thread supply arm 25 has a guide portion 251, and the base board 21 is attached to the guide portion 251. A corresponding and bumped guide bump 26. The guide bump 26 includes a guide track 261 that guides the guide portion 251 to move correspondingly. The guide track 261 includes two moving portions 262 and 262a and a retaining portion 263 formed between them and having a concave structure. In an embodiment, the guide portion 251 is a guide roller that is movable between the moving portions 262, 262a and the retaining portion 263 along the guide track 261. In addition, the base board 21 includes an elastic piece 27, and the seal supply arm 25 is provided with an elastic piece 27 to supply a pushing force to the guide portion 251 so as to abut against the guide track 261. Butting member 252 abuts.

The first press end 222 has a first switch portion 223, and the second press end 232 has a second switch portion 233. The first and second switch parts 223, 233 are connected by a connecting spring 28. The first switch portion 223 and the second switch portion 233 have butting surfaces 224 and 234 and latching surfaces 225 and 235, respectively. The base board 21 includes a first positioning bolt 291 and a second positioning bolt 292 positioned outside the first switch portion 223 and the second switch portion 233. When the seal supply arm 25 is in the seal supply position, the butting surfaces 224, 234 of the first and second switch sections 223, 233 simultaneously hold on the first and second positioning bolts 291, 292. Lean on When the seal supply arm 25 is in the seal supply stop position, the latch faces 225, 235 of the first or second switch section 223, 233 may be the first positioning bolt 291 or the second positioning bolt. (292) is caught.

In order to protect the first lock arm 22, the second lock arm 23 and the thread supply unit 24, the thread feeder 20 is provided with a first lock arm 22, a second lock arm 23 and a seal. It further includes a cover lid 40 connected to the base board 21 to cover the supply unit 24 as shown in FIG. 2.

3A and 3B, a mode of operation in accordance with one embodiment of the present invention is shown. First and second locks when the first and second press ends 222, 232 of the first and second lock arms 22, 23 do not receive horizontal force from the switch bar (not shown) of the flat knitting machine, respectively. The first and second switch portions 223, 233 of the arms 22, 23 result in the butting surfaces 224, 234 against the first positioning bolt 291 and the second positioning bolt 292. The seal supply arm 25 remains in the seal supply position (see FIG. 3A). On the other hand, the elastic piece 27 provides a pushing force to the butting member 252, the guide portion 251 is temporarily positioned against the retaining portion 263, and is located. The first or second switch portions 223, 233 of the first or second locking arms 22, 23 are driven by a switch bar (not shown), such that the first switch portion 223 has a first press end ( If swinging in response to 222 or if the second switch portion 233 swings in response to the second press end 232, the first or second switch portion may be a first positioning bolt 291 or a second positioning bolt. Move toward 292, and the first positioning bolt 291 or the second positioning bolt 292 then moves to the original position of the butting surface 224, 234 of the first or second switch portion 223, 233. It enters the latch surfaces 225 and 235 to form a locked state, thereby causing the first lock arm 22 and the second lock arm 23 to swing in an inclined state. On the other hand, the thread supply arm 25 connected to the first and second locking arms 22 and 23 also swings correspondingly with respect to the first and second connecting bars 241 and 242 so that the thread supply position shown in FIG. Switch to the actual feed stop position. In this state, the guide portion 251 of the seal supply arm 25 is out of the concave structure of the retaining portion 263 and enters the moving portion 262 or the moving portion 262a. In the embodiment, the moving parts 262 and 262a are inclined with respect to the fastening member in which the thread supply arm 25 acts as a support point at the thread supply stop position. In order to return the seal supply arm 25 to the seal supply position, a switch bar (not shown) provides the opposite horizontal force to the first or second press ends 222, 232 to allow the first or second lock arm 22 to be retracted. 23 causes swinging in the opposite direction and also causes the thread feed arm 25 to return to the yarn feed position by means of the first and second connecting bars 241, 242.

As a result, the yarn feeder of the present invention applies a connecting bar system that causes the yarn feed arm to swing between the yarn feed position and the yarn advanced stop position. Compared with the conventional Intasha thread feeder, the present invention is provided with a simple structure and can lower production and manufacturing costs. Furthermore, collisions between components for swinging the seal supply arm can also be prevented, thus reducing the possibility of malfunction. It can be clearly improved compared to the prior art.

Although described above with reference to the embodiments, those skilled in the art can variously modify and change the present invention without departing from the spirit and scope of the invention described in the claims below.

Claims (11)

A thread feeder for a flat knitting machine positioned on the thread feeder guide track and movable horizontally thereon,
A base board slidably connected to the thread feeder guide track;
A first press to which a horizontal force is applied to cause the first pivot end and the second pivot end connected to the base board, and the first pivot end and the second pivot end acting as supporting points to swing in an inclined state, respectively; A first lock arm and a second lock arm having an end and a second press end; And
A seal supply arm positioned between the first lock arm and the second lock arm, a first connection bar hingedly moving the seal supply arm and the first lock arm, and the seal supply arm and the second connection arm; A seal supply unit having a second connecting bar hingedly connecting the locking arms to move simultaneously;
The thread supply arm is subjected to a horizontal force for simultaneously inclining the thread supply arm through the first connection bar and the second connection bar, and a thread supply position at which the first press end or the second press end does not swing. And at least one yarn feed stop position on which the first press end or the second press end swings. The method of claim 1,
And the thread supply arm comprises a guide portion, and the base board includes a guide track corresponding to the guide portion. The method of claim 2,
And the guide track comprises two moving parts and a retaining part disposed between the two moving parts. The method of claim 3, wherein
The holding portion yarn feeder for flat knitting machine, characterized in that formed in a concave structure. The method of claim 2,
The guide unit is a yarn feeder for flat knitting machine, characterized in that the guide roller. The method of claim 2,
And the guide track is located on a guide bump against the guide part. The method of claim 2,
And the base board includes an elastic piece, and the seal supply arm includes a butting member for pressing the elastic piece so that the guide portion abuts against the guide track. The method of claim 1,
And said first press end comprises a first switch portion, said second press end comprises a second switch portion, and said first switch imparting said second switch portion is connected by a connecting spring. The method of claim 8,
The base board comprises a first positioning bolt and a second positioning bolt,
The first switch portion and the second switch portion have a butting face against the first positioning bolt and the second positioning bolt, respectively, when the seal supply arm is in the seal supply position, and the seal feeder at the thread supply stop position. And a latch surface applied to the first positioning bolt and the second positioning bolt when there is a thread feeder for the flat knitting machine. The method of claim 1,
The seal supply arm comprises a sliding slot,
And the base board includes a fastening member inserted into the sliding slot to limit the swing displacement of the thread supply arm. The method of claim 1,
And a cover cover connected to the base board and formed to cover the first lock arm, the second lock arm, and the seal supply unit.

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