JPH0559623A - Method for conveying fiber to carding step and its apparatus - Google Patents

Abstract

(57) [Summary] [Purpose] Using a tow as a starting material, 100% synthetic fiber is stapled in the spinning process, eliminating the loss of fiber opening that occurs during compression packaging, and a compact and novel card process that does not cause fiber damage. A synthetic fiber tow 1 is opened by the opening devices 7 and 8 and then cut into staples by a cutter 4, and then the card 12 is compressed without being packed. A fiber conveying method for a card process, characterized in that air is conveyed by air conveying means 11 and 6 in the step.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fiber conveying method and device for starting a synthetic fiber tow as a starting material, cutting it into staples, and then feeding it to a spinning card process without compressing and packing it. The present invention relates to a fiber conveying method and device that can shorten the length, and that is compact and has high productivity and easy operation.

[0002]

2. Description of the Related Art Conventionally, in the spinning of synthetic fibers, a tow is cut into staples by a synthetic fiber maker, and in order to transport this to each spinning factory, it is compressed and packed in consideration of transportation costs, etc. In a spinning factory, a method is used in which the compressed and packed staple raw cotton is once opened with a kneading cotton machine and then supplied to a card. The blending cotton machine has various functions, but in the case of 100% synthetic fiber, it is not necessary to remove contaminants like cotton, and the staples packed hard are opened.
The main action is to open the fibers and divide them into individual fibers one by one in the subsequent process card to obtain a uniform and high-quality sliver.

The blending cotton machine is designed to avoid sudden action as much as possible so as not to damage the single fiber as much as possible. Various types of fine opening such as coarse opening with blades and spikes, porcupine, garnet, etc. It consists of a series of components that are combined with an opening device. As described above, the kneading and blending machine requires a series of combinations, is long, and is one of the large-scale models in the spinning process.

[0004] In recent years, while the process shortening has been reconsidered from the viewpoint of speeding up, labor saving, energy saving, and space saving, a cotton blower and a mixed cotton blower are opened, and the opening mechanism is improved and automatically controlled. In Japanese Patent Publication No. 2-50213, for example, a fine fiber opening device is proposed in which staples are sandwiched between a pair of apron rollers to provide an air jet flow at an outlet. Although these are excellent in terms of fiber damage, they have a problem that they do not lead to a drastic shortening of a series of mixed-watting steps.

Further, in the case of fine denier staple, there is a problem in that, when it is attempted to obtain a good spreadability in the conventional blended cotton process, fiber damage and fibers are entangled with each other to cause entanglement or nep. Was there.

[0006]

SUMMARY OF THE INVENTION The present invention is intended to solve such a drawback, and an object of the invention is to perform the staple formation of 100% synthetic fiber using a tow as a starting material in a spinning process and to open the compressed packaging. No loss of fineness, and
It is an object of the present invention to provide a compact fiber feeding method and device for a novel carding process in which fiber damage is less likely to occur.

[0007]

In order to solve the above problems, the present invention has the following constitution.

[0008] A fiber transport method for a card process, which comprises opening the synthetic fiber tow, cutting the staple into staples, and then carrying the air to the card process without compressing and packing the staples.

Further, the apparatus comprises an opening device for the synthetic fiber tow, a cutter for cutting the opened tow into staples, and an air transfer means for transferring the cut staples to the card process by air. Is.

The present invention will be described in more detail below. As described above, in the conventional spinning of synthetic fibers, a tow is cut into staples by a synthetic fiber maker, and in order to transport this to each spinning factory, it is compressed and packed in consideration of transportation costs, etc. In a spinning factory, a method is used in which the compressed and packed staple raw cotton is once opened with a kneading cotton machine and then supplied to a card.

That is, in the above conventional method, the cut staples are compressed and packed, so that the openability is remarkably deteriorated, and when the staples are opened in the spinning factory, they become hard and lumpy.
The open condition just before the cardboard hopper of the conventional kneading cotton thread is 1
When set to 00, the opened state was lowered to a level of 20 to 35%.

According to the present invention, a tow consisting of 100% synthetic fiber is used as a starting material, and this is cut into staples in the spinning process, thereby eliminating the need for compression packing of staples, and the staples immediately after cutting have an unopened fiber portion. Although they are slightly mixed, since they are bulky and have a good opened state, they are supplied to the spinning card process by air conveyance while maintaining these good opened states. In addition,
Since the unopened portion is often mixed if the tow is cut as it is, in the present invention, the tow is opened (split) before being supplied to the cutter.

When separating the tow, one or several synthetic fiber tows are combined and passed through several creels to perform the toe separation before entering the cutter. The method of separating the tow is not limited, and it can be obtained by combining curved bars on several creel and expanding and contracting the tow width repeatedly. Further, it can be obtained by giving an air jet flow or a vibration to the tow between the creel. further,
By passing the back top roller between the pair of draft rollers, which are concave screw rollers, while applying a slight tension, the nip point shifts in the tow width direction, thereby enabling the separation.

In the present invention, the total denier of the tow, the denier of the single fiber, the length, the crimped form, the physical properties of the fiber, the tow dyeing, etc. are not particularly limited, and may be a continuous fiber bundle. In addition, if the tow is made of 100% synthetic fiber, the tow is a blended fiber equivalent to the conventional synthetic fiber blending, such as tow with the same material, different toughness, tow with other materials, and tow with different total thickness. The polymerization may be carried out. A typical tow is 500,000 denier polyester.

The tow monofilament denier used is 1.
When the monofilament becomes finer, such as 5 denier or less, in the conventional mixed-bottling process, the entanglement and entanglement of the single fibers leading to the generation of nep in the card tends to occur, but in the present invention, the mixed-bottling process is unnecessary. Therefore, even fine fibers can be supplied to the card process without damaging the fibers.

[0016] In the present invention, the above-mentioned divided fiber tow is cut into staples, but the cutting is not the Ken cutting method such as the turbo stapler or toe reactor used in the conventional tow spinning. Is stapled by a cutter used in the manufacturing process of. The type and type of cutter are not particularly limited, but typical cutters are SKC type cutters and EC type cutters. The cut length is generally used and may be either a square or variable cut, and may be set according to the spinning factory or the yarn design. Further, the spinning method is not limited, and the spinning method may be used.

The staples after cutting are conveyed by an air supply through a pneumatic feeding line equipped with a cotton feeding fan and supplied to the card hopper.
Further, the method of carrying the air is not particularly limited, and may be connected with several cards by the cotton feeding air carrying of the conventionally used kneading machine. The opened staples that overflow from the card hopper should be circulated in the air feed pipe through a cotton feeding fan. It is preferable that the cutter and the tow separator are operated intermittently in synchronization with the amount of cotton fed in the card hopper.

The present invention makes it possible to replace a series of opening parts by combining various opening devices such as blades, spikes, porcupines, garnets, etc. of a conventional opening machine and mixed-punching machine. Further, the steps of cutting and staple compression packing in the synthetic fiber maker can be omitted.

Next, the present invention will be described in detail with reference to the drawings showing an embodiment. FIG. 1 is a process drawing showing an example of the fiber conveying method of the present invention. FIG. 2 is a perspective view of a typical tow separating machine. In FIG. 1, after passing the synthetic fiber tow 1 through several centering bar and curved bar groups 2, for example, through a pair of fiber separators 3 shown in FIG. 2 and after separating the tow, it is introduced into the EC cutter 4 and cut. Then, after stapled, it is conveyed by an air through an air feeding conduit 5 equipped with a cotton feeding fan and supplied to the card hopper 6. Next, the present invention will be specifically described with reference to examples.

[0020]

EXAMPLE Using the apparatus shown in FIG. 1, polyester tow 5
One hundred thousand denier, tow width 180-230mm
After standing vertically up to a creel 70 cm wide with a height of 3.5 m suspended from the ceiling, and then passing through a group of 5 curved bars and centering bars arranged at 25 cm intervals, after setting the toe width to 330 to 360 mm After passing through the curved bar and the centering bar of the fiber separator shown in FIG.

The conditions of the fiber-splitting machine were 1.5 times the fiber-splitting draft, the inter-roller gauge was 1000 mm, the back top roller 7 had a diameter of 150 mm, and a working width of 550 mm was used. The groove roller has a groove width of 5 mm, a depth of 8 mm, and a convex portion width of 5 mm. The bottom roller 8 was made of surface rubber and had a diameter of 150 mm, and the front rollers 9 and 10 were made of surface rubber and had a diameter of 150 mm, and a load of 450 kg was applied to the top roller. The front roller speed of the fiber separator is 80 m / min.

The opened tow thus obtained was interlocked with E
C-Cutter (ECH-12A manufactured by Teijin Seiki Co., Ltd.) 4
Then, it was cut into a 38 mm scale. The cut staples were air-transferred from a cotton-feeding fan of a conventional kneading cotton-blowing machine through an air feeding pipe and supplied to the card hopper 6. Under these conditions, a polyester tow with a fineness of 2.0 denier and 1.5 denier is 2 million of 500,000 denier.
Sensory evaluation of the fiber-spreading effect immediately before the card hopper and the entanglement nep was conducted with seed tow. The results are shown in Table 1. For comparison, the conventional knitted cotton threading machine was simultaneously evaluated.

[0023]

[Table 1]

The quantification of the opening effect was expressed by the opening degree and the specific volume. For the degree of opening, approximately 5 g of staples are randomly sampled, the weight W (mg) is measured, and then the unopened fibers are taken out with tweezers on the plastic plate.
(mg) and calculated by the following formula. The number of measurements was set to 3 and the average value was used.

Openness (%) = {(W−w) / W} × 100 Further, the specific volume (cm ³ / g) is 10 × 10 cm in the inner frame.
25 g of staples are evenly placed once in the box-shaped cylinder, the plastic push plate is placed, the weight is placed on the center to 5 g / cm ² , and the height H (cm) is applied after 2 minutes, and the side center Measure each of the four sides and read the average height,
It was calculated by the following formula. The number of measurements was 4 and the average value was used.

Specific volume (cm ³ / g) = 4 · H The transfer method of the present invention is used for various types of opening such as blades, spikes, porcupines, garnets, etc. of a conventional blending cotton machine both in degree of opening and specific volume. It has been found that the opening effect of a series of mixed-punch cotton opening parts combined with a fiber device is significantly exceeded, which makes it possible to substitute the mixed-punch cotton opening process and that the process can be shortened. ..

Also, although 2.0d is not much different, 1.5d
With the following fine denier staple, entanglement and entanglement nep tend to occur in the conventional mixed-watting process, but according to the present invention, entanglement and entanglement were hardly seen together with good spreadability.

[0028]

INDUSTRIAL APPLICABILITY According to the present invention, a tow consisting of 100% synthetic fibers is opened in a spinning process, cut, and then air-conveyed to a card, thereby making it possible to substitute a series of blended cotton opening processes. In addition, it is possible to obtain high productivity and easy operation with a compact process that has less fiber damage, has a shortened process, and has enabled manpower saving, energy saving, and space saving. Further, it is possible to omit the steps of cutting and staple compression packing at the synthetic fiber maker.

[Brief description of drawings]

FIG. 1 is a process drawing showing an example of a fiber conveying method of the present invention.

FIG. 2 is a perspective view of a typical tow separating machine.

[Explanation of symbols]

 1: Synthetic fiber tow 2: Creel 3: Tow fiber separating machine 4: EC cutter 5: Air feeding pipe line 6: Card hopper 7: Metal concave groove groove roller 8, 9, 10: Gripping roller 11: Cotton feeding fan 12 :card

Claims (3)

[Claims] 1. A method for conveying fibers to a card process, which comprises opening synthetic fiber tows, cutting the staple into staples, and then conveying the staples to the card process by air without compression packaging. 2. The fiber conveying method for a card process according to claim 1, wherein the single fiber fineness of the tow is 1.5 denier or less. 3. A synthetic fiber tow opening device, a cutter for cutting the opened tow into staples, and an air transfer means for transferring the cut staples to a card process by air. Fiber transport device for the card process.