JPH0615933Y2 - Pegs in a yarn carrier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an improvement of a peg in an automatic doffing device of a spinning machine, that is, a device for conveying a yarn fried by an auto doffer.

[Prior Art] The yarn spun by a spinning machine must be replaced with an empty pipe when it is wound into a tubular yarn and becomes full. In recent years, auto-doffer has become popular for labor saving, and the yarn A (see FIG. 2) fried by the automatic doffer is erected to the peg of the yarn-conveying device C parallel to the ring rail B in an upright state and automatically conveyed to the next process. To be done.

The yarn thread transporting device C has a large number of inverted T-shaped pegs D arranged in a trough-shaped rail 21 (see FIGS. 2 and 3), for example, 48
A group of pieces is pushed by the protrusion E to be transferred.

As shown in FIG. 5, the conventional peg D is made of a hard plastic molded product, and is a disc-shaped substrate 22 in which a column 24 having a conical top 23 is continuously provided in a standing manner. The outer diameter of is precision cut finish such as ▲ 75 mm ^-0.04 _-0.10 ▼. This is because the gauges of the spindles S arranged on the ring rails B of the spinning machine, that is, the gauge intervals of the yarn A are precise and correspond to this.

[Problems to be solved by the invention]

However, this conventional peg is a hard plastic molded product, and the plastic has a large expansion coefficient with respect to temperature and a large expansion and contraction with respect to humidity. Humidity control is required, and when the temperature and humidity are changed in the spinning factory according to the raw materials such as synthetic fiber and cotton, the outer diameter of the substrate shrinks or expands, for example, 48 pieces are arranged in a line and pushed by the protruding piece to transfer. In this case, the position of the peg is displaced from the core of the tubular thread A, and there is a problem that the tubular thread is detached from the column and falls when the tubular thread pulled out by the auto doffer is inserted.
Further, in the cutting factory, there is a problem that the working environment is deteriorated due to high temperature and high humidity, depending on the temperature and humidity of the spinning factory.

[Means for solving problems]

In order to solve the above-mentioned problems, the invention is to mount a metal gauge ring whose outer diameter is finished to a precise dimension by precision finishing on the entire outer periphery of a plastic substrate, and A required gap is provided between the outer peripheral surface of the metal ring and the inner peripheral surface of the metal gauge ring.

[Action]

According to this invention, metal has a much smaller expansion / contraction deformation with respect to temperature and humidity than plastic, and the outer diameter dimension of the gauge ring does not easily shrink or expand with respect to temperature and humidity. Even if they are arranged side by side, there is no deviation from the spindle gauge of the ring rails, and there is no mistake in the thread misalignment in the auto doffer, and it is possible to keep the temperature and humidity in the cutting factory comfortable for employees to work during production.

〔Example〕

1 to 3 show an embodiment of the present invention. The peg in the device for transporting yarn of this invention is
A peg body 4 in which a cylinder 3 having a conical top 2 is continuously provided in a standing manner in the center of a disk-shaped substrate 1 made of a hard plastic material such as nylon resin, and an outer surface of the peg body 4 on the substrate 1 is formed. The metal gauge ring 5 has a required outer diameter and is attached.

The peg body 4 is hollow and has a recess 6 at the bottom of the substrate 1 and a hollow portion 7 connected to the recess 6 in the column 3.
Are continuously provided, and a lower brim 8 is projected from the outer surface of the substrate 1 to support the gauge ring 5.

A small gap α is provided between the cylindrical outer peripheral surface facing the upper gauge ring 5 of the lower collar 8 and the inner peripheral surface of the gauge ring 5 so that the plastic peg body expands due to an increase in temperature or humidity. Even so, there is no risk that the outer peripheral surface of the substrate 1 will be pressed against the inner peripheral surface of the gauge ring 5 to deform it.

The gauge ring 5 has a smooth outer surface, and the outer diameter is precision-finished to have an accurate dimension such as ▲ 75 mm ^-0.04 _-0.10 ▼ which matches the spindle gauge.

When this peg is used, as shown in FIG. 2 and FIG. 3, it is slidably arranged in a line in the yarn transporting device C, for example, a group of 48 is pushed by the projecting piece E and the ring rail B is pushed. When stopped in the forward direction, the gauge rings 5 come into contact with each other, so that the respective pegs are in the correct fixed positions regardless of the temperature and humidity in the spinning chamber.

FIG. 4 shows another embodiment of the present invention. This peg is a cover-shaped metal gauge ring 1 in which an upper thin tubular portion 9 and a lower thick tubular portion 10 are connected to the lower half of the peg body 4.
Is installed.

The upper thin tubular portion 9 is in close contact with the lower end of the column 3 of the peg body 4, and a minute gap α is provided between the lower thick tubular portion 10 and the peg body 4. In this embodiment, since the gauge ring is fixed by the upper thin tube portion 9, there is an advantage that the top of the tip of the cylinder is more accurately centered.

〔effect〕

As described above, the peg in the yarn transporting device according to the present invention has a metal gauge ring of a required outer diameter with a small volume change due to temperature and humidity on the outer surface of the disk-shaped substrate of the peg body made of a plastic molded product. They are attached so that they come into contact with each other, and even if a large number of items are arranged as a group, there will be no error in each position, and the outer circumference of the plastic substrate and the inner circumference of the metal gauge ring Since a gap is provided between the two, it is easy to assemble, and even if the plastic substrate expands due to an increase in temperature or humidity, there is no risk of its outer periphery being crimped to the inner surface of the metal gauge ring to deform it. There is no mistake when automatically replacing the yarns at once with the auto doffer, and high temperature and humidity corresponding to the temperature and humidity used in conventional spinning factories during production. Air conditioning control is unnecessary, since it is sufficient to comfortable temperature and humidity employees leads to improved work efficiency. Further, plastic deforms due to moisture absorption after a few months, and there is a large time lag, and it takes a lot of time to control the humidity against deformation during manufacturing, but the present invention does not require such management labor, resulting in cost reduction during manufacturing. In addition, cutting the outer periphery of the substrate of a ready-made peg and fitting a metal gauge ring has the effect of easily reproducing an old peg.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an embodiment of the present invention, FIGS. 2 and 3 are side views and a plan view showing the same usage state, and FIG. 4 is a vertical section showing another embodiment of the present invention. FIG. 5 is a vertical sectional view showing a conventional example. 1, 22 ... Substrate, 3, 24 ... Cylinder, 4 ... Peg body, 5, 15 ... Gauge ring, A ... Tubing thread, C ... Tubing thread conveying device, .alpha.

Claims (1)

[Scope of utility model registration request] 1. A peg in a pipe yarn transporting device in which a circular cylinder having a conical top is continuously provided upright in the center of a disk-shaped substrate made of a plastic molded product, and the outer periphery of the substrate is externally machined by precision finishing. A thread which is equipped with a metal gauge ring whose diameter is finished to a precise dimension, and which has a required gap between the outer peripheral surface of the plastic substrate and the inner peripheral surface of the metal gauge ring. A peg in a carrier.