JPS6366329A - Ttreatment of crude yarn in woollen process - Google Patents

Abstract

A method of handling slubbings in the woollen process comprises positioning a curved flume 24 in the path of the some or each slubbing l4 and passing the slubbing along the flume 24 to create a stress or tension therein. The stress or tension compacts the slubbing and enables it to be wound on a spool l2 in a very much more compact form than was hitherto possible. The flume 24 is easy to thread up and the tension is continuously variable to meet specific conditions.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to the production of spun yarn using a wool spinning device, and in particular to a woolen card processing method and a dense woolen roving wound on a spool or a woolen yarn. It concerns the production of sliver.

[Conventional technology and problems]

In traditional processing methods, blending of raw or short fibers loosens the fibers and removes dirt, vegetable matter and other unnecessary impurities, especially when more than one type of fiber is included in the blend. improve the quality of the material, equalize the raw material flow, make the density of the fiber weave as uniform as possible, then divide the weave into two parallel ribbons, divide these ribbons into rovings and slivers, and combine them into one vibration. A carding effect is applied by an object that kneads between the faces and winds the roving to form a package for spinning. The raw materials.

It may be 100% wool or other natural fibers, a blend of natural and synthetic fibers, or 100% synthetic fibers. However, regardless of the raw materials so treated, such processing methods have historically been known as wool spinning equipment.

The roving is usually wound onto a spool and the empty spool is creeled onto the card in proportion to a series of guides.
el), and the rovings are arranged regularly on the spool by a guide.

The spool, which is creeled onto the card, rests on a driven roller that drives the spool by frictional contact for winding. In the known method, multiple ends of the roving are
The roving is wound around two spools, and a regular yafuri motion is performed between the spools, causing the roving to "cheesee".
A roving guide like J is wound up. The number of roving cheeses wound onto each spool varies depending on the gauge of the spinning machine spinning the yarn. Therefore, it mainly depends on the thread count.

The roving is produced as a soft, untwisted rope with low tensile strength and wound onto a card. The tensile strength is obtained by inter-fiber entanglement and reinforcement of the fiber assembly during the rubbing process, and this strength can be achieved at a low tensile draft of about 6% without pulling the roving irregularly or creating unevenness in the roving. , is strong enough to wind the roving. Therefore, the strength of the roving of the spool is preferably a material with a density of about 0.15 g/cc. This number depends on the material being processed. Due to the low density of the material, the amount of roving that can be wound onto a spool of acceptable diameter is limited.

A spool of woolen roving is operated on a card and spinning machine,
In fact, what about spool-related work?

It accounts for a high proportion of total labor in both carding and spinning. Therefore, the material capacity of the spool limits the economic efficiency of the carding and spinning processes.

European Patent Publication No. 0181697 discloses a method for treating rovings in a wool-spinning process, which includes the steps of arranging finger guides in the same number of passages as the rovings and passing the rovings to the next process. This includes the step of wrapping the roving around the finger guide in order to create a tensile force on the roving.

This method provides good operation except for two problems. The first problem is that the production of roving decreases because it takes a lot of effort to jenning up the finger guide at the beginning of the process or after thread breakage. A second problem is that the tension of the finger guide can only be adjusted depending on the number of rovings wound on the guide.

[Means for solving problems]

The present invention provides a method and apparatus for winding roving that solves the above-mentioned problems.

The present invention provides a method for treating rovings in a wool-spinning process, which comprises the steps of arranging a curved flume in the path of a plurality or each roving, and before the roving is sent to the next process. and feeding the roving along the flume in order to create a tensile force on the roving.

The curved flume has a V-shaped cross-section and is located close to the capacitor drum and capacitor bobbin, or spool, of the woolen card, with one end of the flume close to the nip between the capacitor drum and bobbin. ing. Each roving passing through the condenser rubbing apron of the card passes through an associated flume. In this flume, a tensile force is created by the friction between the roving and the flume. A place is provided for the roving to enter the flume, and the tension exerted on the roving can be varied by means of a variable roving guide.

In the method of the invention, a sufficiently dense roving can be wound onto a condenser bobbin, but this requires modifications to the conventional equipment.

It is important to keep the shortest distance from the tip of the flume to the nip between the condenser drum and spool constant to avoid changes in the quality of the thread inside the bobbin. this is,
This is accomplished by modifying the bobbin's standard track. As a result, the nip remains in a constant location as the bobbin is wound. The raddle traverse for winding the roving onto the spool, which is usually a single chord motion controlled by an offset cam, must be formed because the normal motion is slowed at each end of this motion. Since the package becomes concave, improvement is required. Therefore, it is desirable that the lateral movement cam of the present invention is a cardioid cam. The cardioid cam allows lateral movement to occur at a nearly constant speed, with rapid deceleration and acceleration at each end.

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
Explain in detail.

As shown, a standard woolen card includes a capacitor drum (10) and a winding spool or bobbin (12) associated with the capacitor.

The roving is fed from the condenser rubbing apron (16) in the usual manner. As the roving is wound onto the bobbin, its diameter increases. There is a nip (18) between the capacitor drum (10) and the bobbin (12).
) in a constant state, the axis of rotation (20) of the bobbin is connected to an inclined track (20) arranged to carry out this
2) It is designed to move on top.

According to the invention, a curved flume (24) is located on the card braid shaft (26) in the region of the capacitor drum (10) and the end (28) of the flume extends from the nip (18). They are placed a distance CD) apart.

The flume has a generally V-shaped cross-section over most of its length, but near its distal end (28) it has a constriction as shown at (30) in FIG.

The roving (14) is guided into the flume (24) by a roving guide (32), and the position of the guide changes the running length of the roving (14) inside the flume (24). The roving is adjustable so that a tensile force is created on the roving.

In operation, the roving (14) is guided through the guide (32) into the flume (24) and from there to the nip (18) where it is wound onto the bobbin (12).

With the differential speed between the condenser drum and the winding spool on the one hand and the condenser rubbing apron on the other hand, the roving (14) is pulled against the arcuate surface of the flume. Frictional contact creates a tensile force inside the roving, and in a dense state.

The roving is allowed to exit from the end (28) of the flume.

By adjusting the guide (32), the length of the flume in contact with the roving is varied and the roving is imparted with tension and density accordingly. The distance (D) is kept constant to ensure that the properties of the finished thread do not change. To achieve this, as previously mentioned, the axis (20) of the increasingly wound bobbin (12) is oriented perpendicularly to the circumference of the capacitor drum at that point in the nip (
18) Provide a track so that it can move away from the object.

The flume (24) is connected to a braided shaft (26) which is moved laterally by means of a mechanism detailed in FIG.
). In this case, instead of the standard Ayafuri cam, against the frame structure of the card.

A cardioid cam (32) is used which can open a cam follower (34) which is pivotally mounted at one end (36).

The cam follower (34) has a slot inside which is provided the pin (38) of the swivel follower (40) which is attached at (42) to one end of the braided shaft.

The cam (32) ensures that the zigzag motion has a substantially constant speed over most of the run and is rapidly decelerated before being accelerated again at the reversal at each end of the zigzag.

The length of the trailing motion can be changed by adjusting the trailing follower (40) with the attachment part (42). When the Yayafuri follower (40) is moved to the right in Fig. 3, the Yayafuri becomes smaller;
If you move it to the left, the opposite will occur.

The device according to the invention has an automatic adjustment function. The roving runs over an arcuate flume which is provided with a constriction (30) at the conveying end (28). 1 due to the action of the throttle part
The density of the rovings on the winding spool (12) is improved, the tensile strength is increased and breakage is eliminated.

The frictional force acting on the remaining part of the roving (14) and the contact action with the flume (24) cause the rubbing apron (
16) and the winding spool (12), which tends to straighten the roving (14) over the arc of the flume (24).

If the roving (I4) were to loosen between the rubbing apron (16) and the dense zone, the frictional force in the flume (24) would become smaller.

The winding spool (12) is designed to absorb slack.

Furthermore, the adjustment of the friction effected by the roving guide (32) can be varied infinitely by applying some starting action to the surface of the flume (24).

According to the embodiment shown in the fourth figure, the flume (24) is formed by pressing or molding from a continuous sheet (44) which, as before, is attached to the braided shaft (26). The advantage of such a structure, apart from being simple to manufacture, is that the free end is held above the sheet, thus aiding the threading of the broken roving. In addition, if the roving should come off the flume (24),
The rovings are held on the sheet (44) without being entangled in the machine, and also 1 as the sheet moves laterally.
It is now returned to the original flume (24).

The device according to the invention is disclosed in European Patent Publication No. 01816
Twisting is much easier than with the fingers described in No. 97, and the tension can be continuously adjusted.

Therefore, according to the present invention, all the conventional problems are solved.

It is a diagram.

FIG. 1B is a diagram showing the relationship between the adjustable length of the tip and the rotation of the cam.

FIG. 2 is a schematic view of the device shown in FIG. 1 from another side.

FIG. 3 is a schematic diagram of the knitting lateral movement device.

FIG. 4 is a perspective view showing another embodiment according to the present invention.

Claims (8)

[Claims] (1) providing a curved flume in the passage of several or one of the rovings and moving the roving along said flume so that the roving is 1. A method for treating roving in a wool-spinning process, comprising the steps of: generating a tensile force; (2) The method for treating roving yarn in a wool-spinning process according to claim (1), wherein the cross section of the curved flume is approximately V-shaped. (3) The flume is placed in the vicinity of the capacitor drum, and the capacitor bobbin is a woolen card. That is, the spool is located close to the nip between the condenser drum and the bobbin at one end of the flume.
2) A method for treating roving in the wool-spinning process as described in item 2). (4) A place for the roving to enter the flume is provided, and the tensile force generated on the roving can be changed by a variable roving guide.
) A method for treating roving in the wool-spinning process according to any one of items (3). (5) The distance from the flume end proximate to the nip between the capacitor drum and the spool remains substantially constant during bobbin winding. A method for treating roving in the wool-spinning process according to any one of items (1) to (4). (6) The standard track of the bobbin is such that it can be changed so that the nip is maintained at the same location where the winding of the bobbin is taking place. A method for treating roving in the described wool-spinning process. (7) The thread for winding the roving onto the spool can now be varied to give a nearly constant velocity of motion over most of the thread, with rapid deceleration and acceleration at each end. A method for treating roving in a wool-spinning process according to any one of claims (1) to (6). (8) The method for treating roving in a wool-spinning process according to any one of items (1) to (7), wherein the flume is formed as a depression in the sheet material.