JP2588840Y2 - Unused yarn processing device of knitting machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for treating unused yarns in knitting machines such as stockings.

[0002]

2. Description of the Related Art In a knitting machine such as a stocking or the like, usually, different kinds of yarn are alternately supplied from a plurality of yarn feeders and knitted, whereby the kind of a knitted fabric can be changed depending on a part. ing. In such a yarn switching, the unused yarn processing device that holds the yarn end is operated until the unused yarn is cut from the knitted fabric and then used again.

As shown in FIG. 4, for example, the unused yarn processing apparatus is provided on a circular cutter 2 having teeth formed on an outer peripheral surface, a blade 3 for cutting a yarn, and an upper side of the circular cutter 2. A dial cap 4 fixed to the main body of the knitting machine, and a suction port 5 whose lower edge is disposed so as to have a certain gap with respect to the upper surface of the dial cap 4 and performs suction as shown by an arrow. I have. In this device, the unused yarn 1 which is no longer used for knitting due to the switching of the yarn is hooked by the teeth of the circular cutter 2, moved to the tip of the blade 3 by a rotating operation in the circumferential direction, and pushed. It is designed to be applied and cut. The cut end of the unused thread is inserted into the inside of the suction port 5 from the gap between the lower end edge of the suction port 5 having a curved surface along the periphery R of the dial cap 4 and the dial cap 4. It is sucked and held by suction. In FIG. 4, reference numeral 6 denotes a thread sliding contact guide for guiding the unused yarn 1 moved by the circular cutter 2, 7 to 10 yarn supply ports, and 11 a suction port for reinforcing suction in the suction port 5. 5 is an air nozzle for blowing compressed air inward from the lower end.

[0004]

However, for example, when the yarn supplied from the yarn feeder 7 which is the shortest distance from the blade 3 is cut as an unused yarn, the distance between the yarn feeder 7 and the blade 3 is short. Therefore, the length of the yarn that enters the suction port 5 after cutting is reduced, and it tends to be difficult to hold by suction and to easily pull out. In this way, if the yarn to be retained comes off, the yarn cannot be supplied to the needle even if the next attempt is made to use this yarn. Has become. This trouble occurs more frequently when the yarn to be used is a yarn having a high back tension, such as a covering yarn, and thus an improvement has been demanded.

The present invention has been made in view of such circumstances, and is an excellent unused yarn which can reliably suck and hold the yarn fed from the yarn feeder 7 which is the shortest distance from the blade 3. Its purpose is to provide a processing device.

[0006]

In order to achieve the above object, an unused yarn processing apparatus according to the present invention sucks an end of an unused yarn that is not used for knitting among yarns supplied from a plurality of yarn feeders. A circular cutter for externally hooking an unused thread with teeth formed on an outer periphery of the dial and moving the same in a circumferential direction; A thread cutting blade that abuts and cuts an unused thread moved by a circular cutter, a dial cap provided above the dial and the circular cutter and fixed to a knitting machine body, and a lower edge Is arranged so that there is a certain gap with respect to the upper surface of the dial cap, and the end of the unused thread cut by the blade is placed inside the gap from the gap. And a suction to the suction port, among the peripheral wall of the suction opening, the lower end facing the yarn feeder in the shortest distance from the blade, towards the outside in the horizontal direction
In this configuration, a thread retainer that protrudes is attached.

[0007]

That is, the present invention is directed to a method in which a horizontal portion is formed at a lower end portion of a peripheral wall of a suction port which is conventionally bent along a peripheral edge R of a dial cap and which faces a yarn feeder which is the shortest distance from a blade. by attaching the thread pressing piece which protrudes outward, the yarn was running along the suction port periphery it is obtained so as to be pulled off hooked on the yarn pressing piece. Therefore, according to this device, the yarn held in the suction port can be lengthened by an amount pulled by the yarn presser piece, so that the yarn coming off from the suction port can be reduced. For this reason, in a knitting machine provided with this device, troubles due to yarn switching do not occur as in the related art, and operation stoppage and occurrence of defective products are drastically reduced.

Next, the present invention will be described in detail based on embodiments.

[0009]

FIG. 1 is an explanatory view showing an embodiment of the present invention. This unused yarn processing apparatus has the same basic configuration as that of FIG. 4, and the same parts are denoted by the same reference numerals. However,
This thing is of a conventional dial key catcher Tsu periphery of the peripheral wall of the suction opening 5 which has been bent along the R of flops, the lower end that faces away from the blade 3 in the yarn feeder 7 in the shortest distance, water
A thread presser 21 protruding outward in the flat direction is attached. The projecting surface 21 of the thread presser piece 21
As shown in FIG. 2, which is a longitudinal sectional view of this portion, a is formed in a curved surface that rises downward.
This yarn 1, in which at the time of use considering to move in smoothly in the vertical direction.

Therefore, according to this device, the yarn 1 traveling along the outer periphery of the suction port 5 is replaced with the yarn pressing piece 2.
Since the thread is conveyed to the blade 3 while being hooked on the thread 1, the thread held in the suction port 5 can be lengthened by the amount of the protrusion of the thread pressing piece 21. As a result, thread pull-out from the suction port 5 is reduced, and troubles associated with thread switching do not occur as in the related art, and operation stoppage and occurrence of defective products are drastically reduced.

The shape of the thread presser 21 is appropriately set, but as shown in FIG.
5 to 4.0 mm is preferable, the vertical projection length L is 4.5 to 5.0 mm, and the projection width W is 1.5 to 2.0 mm. Within this range, the yarn 1 is hooked without breaking. Then, the projecting surface 21a of the thread presser piece 21
As described above, the thread 1 is preferably formed in a curved shape as in the above embodiment, since the yarn 1 moves smoothly in the vertical direction.

[0012]

As described above, the unused yarn processing apparatus according to the present invention has a lower end portion facing the yarn supply port located at the shortest distance from the blade on the peripheral wall of the suction port, and has a horizontal outward direction.
Because the thread retainer that protrudes is attached,
The yarn running along the outer periphery of the suction port is caught by the yarn presser piece, and is carried to the blade in a state where the yarn is pulled out by a length corresponding to the protrusion, and cut. Therefore, according to this device, the length of the yarn held in the suction port as the unused yarn end can be made longer than in the related art, so that it is possible to reduce the yarn coming off from the suction port. For this reason, in a knitting machine provided with this device, troubles due to yarn switching do not occur as in the related art, and operation stoppage and occurrence of defective products are drastically reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the embodiment.

FIG. 3 is an explanatory diagram relating to dimensions of a projecting piece.

FIG. 4 is an explanatory view of a conventional unused yarn processing device.

[Explanation of symbols]

1 unused yarn 2 Saki Interview error Ka Tsu terpolymers 3 blade 4 Dial key catcher-up 5 suction opening 7, 8, 9, 10 the yarn feeder 21 yarn pressing piece

Claims (1)

(57) [Scope of request for utility model registration] 1. A device for sucking and holding a terminal of an unused yarn not used for knitting among yarns supplied from a plurality of yarn feeders, comprising: a dial for giving a high-speed rotation to an annular needle array; A circular cutter for hooking an unused thread by means of teeth formed on the outer periphery and moving in the circumferential direction, and a thread cutting blade for abutting and cutting the unused thread moved by the circular cutter And a dial cap provided above the dial and the circular cutter and fixed to the knitting machine main body, and a lower edge is disposed so as to have a constant gap with respect to the upper surface of the dial cap, and cut by the blade. And a suction port for suctioning the end of the unused yarn that has been drawn inward from the gap. An unused yarn processing device for a knitting machine, wherein a yarn presser piece protruding outward in the horizontal direction is attached to a lower end portion facing a yarn feeder located at the shortest distance from the yarn feeder.