JPH0689491B2 - Sliver or roving splicing method and splicing device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a sliver or roving lap joint method and device during a spinning process.

(Prior Art) The sliver or roving joint work that is currently performed is mainly performed manually, and the method is
The end portion of the sliver or roving is polymerized by a proper amount, and the polymerized portion is hand-rubbed to continue.

As a sliver or roving follow-up device, there are some examples for a drawing machine and a spinning machine, but they have not been widely used.

Other than sliver or roving, there are air type, friction type, electrostatic type and the like as splicer devices for splicing yarn.

(Problems to be Solved by the Invention) FIG. 10 is a distribution ratio of experimental values obtained by performing the sliver pulling-out force (unit: g) required for pulling and cutting the sliver on the abscissa and carrying out many times on the ordinate ( It is the intensity distribution curve of the sliver expressed as a unit (%). Curve A in the figure shows the pulling force of the seamless sliver, and curve B shows the pulling force of the seam manually.

Comparing the curves A and B, the pulling force of the sliver seams by hand varies widely, but most of them are about the same as the pulling force of the seamless sliver, so that the strength is almost within the draft proper area D. It is in
Since this manual seam is a lap joint, the seam portion is naturally thicker than the seamless portion. Therefore, in view of the homogenization of the sliver due to the draft in the post-process, the conventional manual seam shown by the curve B may cause thick spots in the post-process.

That is, regarding the joint strength by lap joint, the range of C in FIG. 10 is the draft defect occurrence area, and the range of D is the draft proper area. Further, the range of E is an area where the sliver cuts due to insufficient strength when the sliver passes through the creel, and therefore the range of E is also a defective area.

As can be seen from the above description, the conventional manual splicing not only requires a large amount of manual labor, but also has a problem that not only the workability is poor, but also the quality of the yarn in the subsequent process is adversely affected.

In addition, the sliver or roving follow-up device that is partly implemented in the above-mentioned drawing machine and spinning machine is complicated and too large, resulting in high cost, economically unfriendly, and unstable quality. Therefore, it is not practical.

Furthermore, when the splicer device for yarn splicing described above is applied to a sliver or roving, it is difficult to achieve both the required seam strength and the draft performance that does not hinder the quality. It is not suitable as a connecting device for rowing.

The present invention has been made from the above point of view, and the joint strength of the sliver or roving is always within the draft proper area D shown in FIG.
It is an object of the present invention to provide a splicing method and device capable of stabilizing the quality, and the device is simple, small and economical as compared with the conventional device, and is also a spinning exhibit type. The purpose is to be able to easily adjust to an adapted state.

(Means for Solving the Problems) In order to achieve the above object, the sliver or roving splicing method of the present invention is to superimpose an end portion of the sliver or roving for an appropriate length, and to bridge the overlapped portion between two pulleys. The widened portion is widened by the widening action of the needle protruding from the belt, and the widened portion is rolled up from one side by the rotation of the wheel having the radial protrusion provided near the needle tip of the bent portion of the belt. It is characterized by

Further, a means for widening the sliver or roving by superposing a suitable length of the end portion on the belt extending between the two pulleys by means of the widening action of the needle, and the widening portion, the needle tip of the bent portion of the belt. A sliver or roving splicing device is configured by providing a means for winding the wheel in a form of a roll from one side by rotation of a wheel having radial projections provided in the vicinity of the section.

(Operation) The splicing method of the present invention is to widen the overlapped portion, which is not a conventional splicing method, and to wind the widened portion in a lap shape from one side. Since the sliver or roving was provided with a means for widening the sliver or the end portion of the roving which has been polymerized to an appropriate length, and a means for winding the widened portion in a roll shape from one side, the method and apparatus of the present invention are provided. According to this method, the fibers of the sliver or roving that are always widened at a constant rate are spliced from one side by winding them in a wrapping shape, so that the entangled state of the fibers is always equal and the strength of the seam is As shown by the curve F shown in FIG. 10, it can be stored in the draft proper area D without requiring skill.

Further, since the device of the present invention comprises only the widening means and the winding means, the structure is simpler and smaller than the conventional device to be economical, and in addition, it is suitable for a variety of spinning products. Easy adjustment is possible.

(Example) Hereinafter, the Example of this invention is described about drawing. 1 to 7 show a first embodiment of the present invention.

In the figure, reference numeral 1 denotes two outer plates of the present apparatus, and reference numeral 2 denotes a plurality of connecting rods that connect the two outer plates 1 in parallel at appropriate intervals. Numerals 3 and 4 are shafts which are laterally provided in parallel with each other at a proper interval between the outer plates 1 and 1, and pulleys 5 and 6 are fitted on the shafts 3 and 4, respectively.
A belt 7 is stretched over the pulleys 5 and 6, and a large number of needles 8 are distributed and arranged outward on the belt 7.

Further, a shaft 9 is rotatably supported between the outer plates 1 and 1 in parallel with the shaft 4 at appropriate intervals on the side of the shaft 4, and the shaft 9 is provided with a large number of radial projections 10a. The wheel 10 for winding that is included is fitted. And the needle 8
1 and the tip of the protrusion 10a of the wheel 10 are set so as to almost contact each other at a point P on the center lines of the shafts 4 and 9 as shown in FIG.

In addition, an opening 11 reaching the tip of the upward needle 8 is formed at the upper edge of the outer plates 1 and 1.
Guide groove 12 along the locus of the tip of the needle 8 from the bottom of the
Are formed up to the point P.

Then, as shown in FIG. 3, a large number of separate plates 13 having the openings 11 and the guide grooves 12 are provided.
Are attached to the connecting rod 2 so as to separate them.

Further, 14 is a reversible motor provided on the lower inside of the outer plate 1,
a is its drive axis. As shown in FIGS. 2 and 3, pulleys 15 and 16 are fixed to the drive shaft 14a,
A pulley 17 is fixed to the shaft 9, and a pulley 18 is attached to the shaft 4.
Is stuck. Reference numeral 19 is a belt spanning the pulleys 15 and 17, and 20 is a belt spanning the pulleys 16 and 18. Reference numeral 21 shown in FIGS. 2 and 3 denotes a bearing plate for bearings.

Next, the method of the present invention performed by using the above-mentioned apparatus will be described with reference to FIGS.
FIG. 7 will be described. In the figure, 22 is a sliver. To connect the sliver, as shown in FIG. 4 (c), the end portions 22a of the two slivers 22 to be connected are polymerized by an appropriate length L, and the sliver is polymerized. Overlap part 22a of sliver 22
4 is inserted into the opening 11 as shown in FIGS. 4 (a) and 4 (b), and is set by being inserted into the tips of the plurality of needles 8 located at the bottom of the opening 11.

In this state, the motor 14 is rotated in the direction of arrow G in FIG. 2, the shaft 4 is rotated in the direction of arrow H, and the shaft 9 is also rotated in the direction of arrow I, as shown in FIG. 5 (a). Like sliver
The overlapping portion 22a of 22 moves in the guide groove 12 with the movement of the needle 8 as shown by an arrow J, and between the needles 8 with the rotation of the needle 8 in the angular range K of FIG. 5 (b). The expansion action widens the width as shown in FIG. 5 (c). When the side edge portion of the expanded overlapped portion 22a reaches the point P which is the end point position of the guide groove 12 as shown in FIG. 6, as shown by an arrow I in FIGS. 6 (b) and 6 (c). The protrusion 10a of the rotating wheel 10 scrapes up the widened portion 22a of the widened sliver 22 in the shape of a roll by the scraping and winding action as indicated by the arrow M, as shown in FIGS. 6 (a), (b) and (c). . If the reversible motor 14 is rotated in the reverse direction at the end of this winding, the needle 8 rotates in the direction of arrow N as shown in FIG. The sliver 22a in the opened state moves in the guide groove 12 as shown by the arrow O as the needle 8 moves and returns to the bottom of the opening 11. The sliver 22 returned to the bottom of the opening 11 may be pulled out of the needle 8 and taken out as shown by an arrow Q in FIGS. 7 (b) and 7 (c).

When the motor 14 is rotated in the reverse direction, the wheel 10 rotates in the direction of the arrow R in FIG. 7B, but the sliver 22 is held by the needle 8, so the movement of the sliver 22 in the direction of the arrow N is the wheel. Not blocked by 10. This has been confirmed by experiments.

8 and 9 are principle explanatory views showing another embodiment of the device of the present invention, in which the same reference numerals as those used in the drawings denote the same elements.

FIG. 8 shows that two spike rollers 23, 24 are provided so that they can be rotationally driven to such an extent that the needles 23a, 24a planted in the rollers are in slight contact with each other, and the rotation speed V _{1 of one} roller 23 is increased. , By setting the rotation speed V ₂ of the other roller 24 to a large value, the guide groove that is the contact portion of both rollers is set.
The overlapped portion 22a of the sliver 22 is widened at the twelve bent portions 12a, and the widened sliver 22 is glued from one side thereof at the end point P of the guide groove 12 by the rotation of the wheel 10 in the direction of the arrow S as in the above embodiment. It is to be rolled up. This caught sliver can be taken out by rotating the rollers 23 and 24 in the reverse direction.

Further, FIG. 9 shows that the superposed sliver 22a is first passed between the pair of rubber rollers 25 and 26 as shown by an arrow T, and then the roller 2
By passing the sliver between a pair of apron feeders 27, 28 having a feeding speed V ₂ faster than the peripheral speed V ₁ of 5,26, the sliver is widened between these apron feeders, and the widened sliver is apron feeder. The two rubbing rollers 29 and 30 provided at the outlets of the 27 and 28 are rotated in the directions of the arrows U and W so that the sliver is wound in one side.
31 is a sweeper. Also in this case, the sliver wound can be taken out by reversing the feeding mechanism of the sliver, but it may be taken out by moving the roller 30.

Although only the sliver has been described in the above-described embodiment, the same applies to the roving, and the description thereof will be omitted.

(Effect of the invention) As described above, the splicing method of the present invention is to widen the overlapped portion, which is not a conventional splicing method, and perform an operation of winding the widened portion in a roll-like shape from one side. The device of the present invention is also provided with a means for widening a sliver or roving end portion that has been polymerized for an appropriate length and a means for winding the widened portion in a roll shape from one side, which are not present in the conventional device. From the above, according to the method and apparatus of the present invention, the fibers of the sliver or roving that are always widened at a constant rate are continuously wound by winding the sliver or roving from one side of the sliver or roving. As a result of being always equalized, the strength of the seam can be stored in the draft proper area D without requiring skill as shown by the curve F shown in FIG. Effect can be obtained.

Further, since the device of the present invention comprises only the widening means and the winding means, the structure is simpler and smaller than the conventional device to be economical, and in addition, it is suitable for a variety of spinning products. There is an advantage that it can be easily adjusted.

As described above, since the device of the present invention can be made compact, there is also an advantage that it can be easily installed in a work robot or built in each machine stand.

[Brief description of drawings]

FIG. 1 is an elevational view showing the internal structure of the device of the present invention, FIG. 2 is an elevational view showing the outside thereof, FIG. 3 is a plan view thereof, and FIGS. 4 to 7 are operation explanations of the device of the present invention. In the figure, (a) is each plan view, (b) is each elevation view, (c).
Is a perspective view showing the state of the sliver in each step, FIGS. 8 and 9 are principle explanatory views showing another embodiment of the present invention, and FIG. 10 is a diagram showing the pulling force of the sliver by various joining methods. is there. 1 ... Outer plate, 2 ... Connecting rod 3,4 ... Shaft, 5,6 ... Pulley 7 ... Belt, 8 ... Needle 9 ... Shaft, 10 ... Wheel 10a ... Projection, 11 ... Opening 12 ... Guide groove, 13 ... Separate plate 14… Reversible motor, 14a… Drive shaft 15,16,17,18… Pulley 19,20… Belt, 21… Attach plate 22… Sliver 22a… Sliver end (overlap, widening)

Claims (2)

[Claims] 1. A sliver or roving end portion is superposed for an appropriate length, and the superposed portion is widened by a widening action of a needle protruding from a belt spanning between two pulleys, and the widened portion is bent. Sliver or roving splicing method, characterized in that the sliver or roving is wound up from one side by rotation of a wheel having radial projections provided in the vicinity of the tip of the needle. 2. A means for widening a sliver or roving by superposing an appropriate length of the end portion of the sliver by a widening action of a needle projecting on a belt spanning between two pulleys.
A sliver or roving splicing device comprising means for winding the widened portion in a curl shape from one side by rotation of a wheel having a radial protrusion provided in the vicinity of the needle tip of the bent portion of the belt.