JPS59204952A - Yarn feeder for knitting machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The invention provides a system in which a system is guided from a thread spool via a plurality of thread guide rings and at least one thread tensioning device to a mesh forming point, and at least one of the thread guide rings The present invention relates to a feeding system for a netting machine, in particular for a netting net, which is displaceably provided to form a loop.

Conventional technology In horizontal satin, reciprocating, moving circular knitting machines, and other stitch forming machines, when reversing the direction of movement, returning the thread path, changing the width of the mesh, or reversing the direction of rotation of the satin, the system tension necessarily increases. A change occurs,
In order to maintain a uniform system tension, this system tension variation is usually compensated for by a swingable guide ring holder under the action of a spring. In yokozuna history, a device is known that controls yarn path displacement in relation to the width of movement. Such devices are expensive to construct and require complex controls. It is also known (CH 535 309) to carry out the formation of yarn loops in flat knitting by means of linearly force-driven yarn guiding rings for the purpose of capturing the yarn tension. However, such a driven control of the thread guiding ring is expensive and is not well suited for rapid thread tension compensation in a market-sensitive manner.

OBJECTS OF THE INVENTION The problem on which the invention is based is that it is possible to pull back relatively long thread sections for the purpose of thread tension adjustment, but without the need for harmful or complex control. The object of the present invention is to construct a yarn feeding device l of the type mentioned above.

Starting from a yarn feeding device with the characteristics mentioned at the outset, the invention achieves this task by providing a system in which a displaceable yarn guiding ring can be freely guided on a vertical guide track and can control the yarn tension. The solution is that the tensioning system, which is arranged on the extending slide and is arranged in front in the direction of thread withdrawal, is controlled as a function of the position of the slide on the guide track. Control of the thread tensioning device can be carried out by means of at least one electric detector which is arranged in the guide track of the slide and can be actuated by the slide.

With the yarn feeding device constructed according to the invention, a forced drive device for the displaceable yarn guiding ring is not required. Yarn feeding devices with yarn supplementary sections are constructed in a space-saving manner and, in flat knitting machines, are preferably provided at both ends of the knitting machine, in which guide tracks for a plurality of displaceable yarn guide rings are arranged in each needle. Can be installed between floors. If necessary, one
ll) A system compensation loop with a length longer than twice the distance between the ceiling and the floor is also formed. It becomes unnecessary to control the yarn path displacement in relation to the fabric width. The yarn feeding device is equipped with a yarn monitor, which is normally installed above the needle method and may cause dust and lint to fall into the mesh forming area, in the yarn compensating section of the yarn feeding device, which is installed below the mesh forming area. Another advantage is that they can be connected. That is, according to the present invention, the guide track for the sliding body of the displaceable yarn guiding ring has a detector at its lower end that controls the knitting machine drive device, and the detector is operated by the sliding body that falls when the system breaks. can do.

A ball brake can be used as a controlled thread tension device, the braking pressure of which can be manipulated electromagnetically. If a system loop is present or absent and the displaceable thread guide ring is in the upper end position, the excitation of the thread tensioning device is interrupted or reduced via a detector operated by the thread guide ring or the slide. so that the thread can be pulled out unhindered via the system tensioning device. However, if there is no thread tension from the mesh formation point, the displaceable thread guide ring will fall, and the attached thread tensioning device will be energized via the detector, which will cause the thread to be pulled out further through the thread tensioning device. to prevent In order to immediately start the formation of the thread supplementary loop, a spring can be provided at the upper end of the guide track that preloads the slide of the displaceable thread guide ring downward, interrupting the tensile loading of the system. and,
This spring immediately starts the falling movement of the sliding body and acts to suppress this when the sliding body rises again. Although it is possible to apply a replaceable weight of 71 M to the sliding body, there is no need to do so. Therefore, it is not necessary to provide heavy sliding bodies, but rather the yarn feeding device according to the invention can be operated with a relatively small yarn tension.

At this time, the braking force of the ball brake can be increased by the falling blade G of the sliding body.

Embodiment An embodiment of a feed system device for a 4-noon slag constructed according to the present invention will be described below with reference to the attached 49 drawings.

Figures 1 and 2 show the upright leg l01q1 floor 1 of the flat knitting machine.
1 and 12, a carriage 14 movable on a guide rod 13
, a hobbin table 15 provided on the back of the knitting machine and on which the system bobbin 16 is placed, a holder 17 for the yarn guide ring 18 provided on both sides of the bobbin table 15, and, for example, a yarn supply device 1.
9 is shown.

FIG. 1 further shows a single B-shaped piece 20 completed on the compressor. Furthermore, in FIG. 1, a system compensator 21 is provided on both end faces of the flat knitting machine, to which the yarn 22 drawn out from the yarn bobbin I6 is supplied, and from this the yarn 22 passes through both ends of the side bed and is in the normal state. The thread is fed to the thread path 40 where it can be entrained by the key A/rigid 14. The lateral thread guide stops 23 define the maximum movement stroke of the thread guide 40. The thread section between the stopped state of the thread path and the start of the working range (mesh edge) is compensated by the system compensator 21 upon reversal of the direction of movement until the thread path reaches the working range of the saw again.

2 and 3 show detailed structures of both system compensators 21. FIG. The system compensator 2] is configured, for example, for a total of six threads 22/1 to 22/6. Series 22/1~
22/6 first reaches the ball brake 25 as a yarn tensioning device via the yarn guide ring 24 of the yarn supply device 19, which according to FIG. 2 has a system cylinder. The braking pressures 26 of the six ball brakes 25 in total are each influenced by an electromagnetic coil 28 which is supplied with power via a power supply conductor 27.
The braking force and braking time of the ball brake 25 are controlled by this. In the direction of yarn withdrawal, in the direction of the ball brake 25,
Each thread is first passed through a fixed thread guide ring 29. This guiding ring 29
and the second fixed thread guide ring 30.
is provided. The displaceable guide ring 31 is connected to a slide 32, as shown in FIG. are supported so that they can move freely. Each yarn compensator W 21 therefore has six such guide tubes 34 for each displaceable yarn guide ring 31, which are divided into two groups of three guide tubes 34 each, It extends downwards to floor level.

The number of guide tubes, their division into groups and their height arrangement can be arbitrary.

As can be seen from FIG. 3, an electric detector 35 is provided at the end of each guide pipe 34, and a connecting cable 36
The ball brake 25 is connected to an electric control device (not shown) via the electric control device. When the displaceable guide ring 3 reaches between the adjacent fixed guide rings 29 and 30 in the vicinity of its upper end position, the detector 35 is actuated by the slide 32 of this guide ring 31. . Third
On the right side of the figure, the displaceable thread guide ring 31 is shown in this upper end position. In this position, the corresponding thread tensioning device 25 is released via the electric control device and its electromagnetic coil 28 is therefore deenergized or set to a settable degree of braking by means of the regulator 41. 2 and 3 show the operating section of regulator 41. FIG.

When the thread tension is lost during reversal of the carriage 14 or due to the return movement of the thread path, and the thread 22 is loosened, the displaceable thread guide ring 31 falls downwards due to the small amount of its sliding body 32, and
A system loop 37 is formed between the guide rings 29 and 30. The guide tube 34 is provided with a coil compression spring 38, and a 7g
In the upper end position of the system [31, a preload is applied to the slide 32, which immediately initiates a downward movement of the displaceable jJ thread guide ring 31 upon a decrease in thread tension. When the thread loop 37 is reprocessed and the thread guide ring 31 moves upwards, the spring 38 also acts as a restraining member.

When the sliding body 32 falls downward from the upper end position, the ball brake gear 25 is excited via the detector 35, and the braking pressure 26
is pressed against the throne by the electromagnetic coil 28, so that the thread is no longer drawn out and the system loop 37 is formed only from the system that is returned from the thread channel.

When a system breakage occurs, the displaceable yarn guide ring 31 moves to the guide tube 34.
fall to the bottom of the. At the lower end of each guide tube 34 there is provided another electrical detector 39, shown in FIGS. 1 and 2, which operates the netting machine in place of the thread monitor, which is normally located above the side bed. Stop.

The yarn compensator 21 constructed in accordance with the invention utilizes a displaceable small weight guide ring 31 to compensate for the large system loop 37.
can be operated with a small system stress. If necessary, the thread 22 can also be guided via two displaceable thread guide rings 31, so that the system can also be provided with two compensation system loops 37. The guide tube 34 can also be provided on a separate frame next to the netting machine.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view of a horizontal netting machine equipped with a yarn feeding device according to the present invention, FIG. 2 is a side view of this horizontal netting machine as seen in the direction of arrow II in FIG. 1, and FIG. FIG. 2 is an enlarged view of the thread guide portion of FIG. 22... Thread, 25... Thread tension device, 29.30.3
1... Yarn guide ring ζ 32... Sliding body, 34... Guide track (guide tube), 37... System loop. Ruschaft Mitsut Beschlenkter Hafrang, '1°゛, 6゛') Agent Patent Attorney Osamu Nakahira; (7,1 \'.

Claims (1)

[Scope of Claims] 1. A system is guided from a yarn sump via a plurality of yarn guiding rings and at least one system tensioning device to a mesh forming location, and at least one of the yarn guiding rings is displaceably arranged to form a yarn loop. In this case, a displaceable thread guiding ring (31) is provided on a sliding body (32) which is freely movable on a vertical guide track (34) and exerts a thread tension, and which is arranged in the forward direction in the thread drawing direction. The yarn tensioning device (25) provided is connected to the guide track (34).
) A knitting machine monthly feed system device, characterized in that it is controlled in relation to the position of a sliding body (32) on). 2 The sliding body (3) is placed on the guide track (34) of the sliding body (32).
2) The yarn feeding device according to claim 1, further comprising an electric detector (35° 39) operable by 2). 3 A system tension device (25) is installed in the upper range of the guide track (34).
) The yarn feeding device according to claim 2, further comprising a detection 1 (35) for controlling the yarn feeding device. 4. The yarn feeding device according to claim 2, characterized in that a detector (39) for controlling the drive of the knitting machine is provided at the lower end of the guide track (34). 5 A displaceable guide thread 119 is attached to the upper end of the guide track (34).
Yarn feeder according to claim 1, characterized in that a spring (38) is provided that applies a downward preload and an upward restraint to the sliding body (32) of the j (31). Device. 6. Yarn feeding device according to claim 1, characterized in that a ball brake (25) with an electromagnetically operable brake (26) is provided as a controllable yarn tension device. . 7. The vertical guide track (34) of the displaceable thread guide ring (31) for the plurality of systems (22) is located in the area between the needle bed (IL12) and the bed of the needle bed (11) , 12), respectively.