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Spinning Machinery the maximum package size is 420 mm in diameter. The driving Many peripheral equipments concerning Fiber Manufacturing system of these large-sized high speed winders adopts a spindle Machinery were exhibited this time. For example, Herberlein type suitable for high speed except 800 series (4,500 m/min). exhibited Hema Jet LB-02 (Fig. 12) air jet nozzle. This type of Murata Machinery exhibited 742B machine using the friction nozzle is efficient for low air consumption and suitable for wide driving system (Fig. 11). Its bobbin holder is 920 mm in length count ranges (350-700 dtex). In friction texturing disc units, FAG exhibited FTS4714 (Fig. 13) which adopts a single driving system different from FTS47I having a tangential driving system. This unit has the advantages of less noise and less irregular rotation (1-2%). 6. Summary No marked interesting developments appeared at the booths for Fiber Manufacturing Machinery in the 3rd OTEMAS compared with ITMA'83. One of the main trends of the exhibits this time was the quest for further automation and higher quality to answer the recent demands for the production of a smaller quantity of products of a wider variety. This shows that the efforts to introduce the tech- nology of electronics will make a profitable return for machine makers. Fig. 11 Murata Machinery, 742B and the maximum package size is 400 mm in diameter. Spinning Machinery 5. Peripheral Equipment Jyuzo Hosokawa Faculty of Educaion, Shiga University 1. Introduction As compared with the 2nd OTEMAS in 1981, a large number of machine makers exhibited so many kinds of machines and their accessories belonging to the spinning process. Main trends of this exhibits are the development of further automation and the recent demands for the production of small quantity and wide variety. Main machines and the accessories exhibited in relation to the spinning process will be as follows. 2. Preparation of Spinning 2.1 Blowing-room process Two bale feeders for cotton blowing machines are exhibited; one is from Nihon Spindle Mfg. Co., Ltd . and the other is from Ohtori Kiko-Trutzchler. "Bale Opener" from Nihon Spindle is Fig. 12 Herberlein, Hema Jet LB-02 basically as an opener with a rotating turn table on which 12 to 20 bales can be loaded. Cotton fibers picked and opened by the opener roller located above the bale is pneumatically sent to the next process. The opening process by the teeth rotating at high speed provides uniform tufts and requires no operators except in bale arrangement. Thus, "Bale Opener" provides the features of labor saving, compactness and easy handling . Compared with the conventional feeders of Trutszschler , Reiter and Marzoli, the uniqueness of this type is in moving the bale by the turn table. Continuous opening operation , improve- ment of mixing quality and energy saving are achieved by the turn table rotation. Only the fact that the opener roller picks up cotton from the same hight of bales and can not control this hight might be some disadvantage (Fig. 1). Ohtori-Trutzchler exhibited their Blendomat BDT, an head of which moves back and forth above the bales lined up in the appointed position. When the head, while picking cotton, moves Vol. 32, No. 3 (1986) 61 Special features of each card are described as follows. "Exactacard" DK 715 is widely reputed to be one of the most developed card and has following main features (Fig. 3). Fig. 1 Feeder "Bale Opener" (Nikon Spindle) up to the last bale in one direction, it goes back to the first starting position quickly. There seems to be a slight disadvantage in this discontinuous picking motion. They also exhibited a series of machines belonging to the blowing process and a carding machine interconnected as shown in Fig. 2. In Fig. 2, LVSV means Fan Condenser, BES: Feeeding Unit, SRS 6: Step cleaner, Do: D type Opener, MTV 1: Transport fan and DK 715: Exacta- card (Trutzschler). Blowing Room Machinery Model TOH made by Ohara Iron Works and Toyoda Automatic Loom Works is a product by the aid of technical cooperation with Hergeth Hollingsworth. The main features of this machine are the revolutional non-lattice system and the free-nip opening mechanism. These have been developed exclusively by Ohara and do not use any bottom lattice and spiked lattice. Fig . 3 "Exacta card"" DK715 (Trutzschler) Very stable steel construction for very high speed driving. 2.2 Carding process (1) There were two automatic card feeders displayed, i.e. New (2) Electronically-controlled individual driving for producing Non-Lap Card Feeder by Nihon Spindle Mfg. and Extra FBK by the best quality silver. Programming of three independent delivery speed commands. Ohtori Kiko. The former is an improved model of Non-lap Card (3) Feeder, providing features of large capacity meeting with high (4) Sliver former, Webspeed for high speed sliver gathering. Carding segment and Web Cleaner KR (Fig. 4). speed card feeding and easy access for maintenance. (5) FBK type III by Ohtori Kiko, a reformed feeder from FBK type I, has a similar chute system, and was displayed in connection with a series of blowing-room machineries. The main improve- ment is in regulating cotton tufts by air current. Actually, well opened tufts by BDT mentioned before are fed into Card Feeder FBK III through the blowing-room. In the bottom reserve chute of FBK III, the density and the level of accumulating tufts are con- trolled over its full width by means of the air compressed fan in FBK III. In the carding process, "Exactacard'' DK 715 by Trutzchler, CM 80 type by Howa Machinery, Nitto Unicard CH-W type designed by the tandem carding system, High Speed and High Production Testing Card by Kanai Juyo Kogyo and 25 D-Mettal- lic Carding Machine by Chiba Iron Works for a special use were exhibited. Fig. 4 Web cleaner KR (Tutzschler) Fig. 2 Blowing-room machineries and the card interconnected. (Ohton-Triitzschler) 62 Journal of the Textile Machinery Society of Japan CM 80 by Howa Machinery is opened to the public for the by N. Schlumberger. The other is a high-speed worsted comber first time in Japan. Its main features are as follows. Model PSE 10 running at 200 nips/min (without bur-knift), made (1) Tough framing, (2) High precision cylinder and doffer by Sant' Andrea Novara. made of steel plate, (3) Cylinder under-casing made of light alloy, (4) Improved doffer speed-change mechanism and (5) 2.4 Drawing process Specially designed short-fiber extracting device which is pro- In the cotton system, drawing frames by Ishikawa Seisakusho, vided at the outlet of the flat. Short fibers floating above the Hara Shokki, Howa Machinery and Rieter Machine Works were cylinder are discharged positively to improved the sliver quality. exhibited. LDF draw frame with an auto-leveller by Ishikawa Seisakusho Nitto Unicard is designed by the tandem carding system, but has an individual driving and measuring roller systems on both the mechanism is independently built and each device is fixed by a unit system. Therefore maintenance is as easy as a single card. right and left delivery parts of one head. By measuring the initial test drawing, the aimed grain of the sliver can be set by an easy The web doffing device (Uni-doffer), having extremely simpli- fied construction and consisting of one fluted roller and a pressure and precise touch with the help of digital display on the control box. The draft part by 4/3 system (4 over 3) comprisesthe curved blade, improves its web stripping efficiency even at high speed doffing. contact with the pressure bar. This mechanism is said to contribute Kanai Juyo Kogyo, which is not belonging to carding machine to improve U% remarkably through the exact drafting. The im- makers but i$ a main carding wire maker, displayed and made a proved cleaning effects with smooth air flow by the pneumatic trial run of a high speed and high production testing card on an suction prevent lint accumulation on the drafting part etc. The maximum delivery speed of the sliver is up to 400 m/min. experimental basis. Main features of this testing card are; (1) Metallic wires on the cylinder and the doffer, (2) Flat card D-400 MT, D-400 MS and CD-500 N by Hara Shokki were showed. D-400 MT has 1 head and 2 deliverlies and its maximum clothings, (3) Specially designed stationary flats set on both sides of the cylinder, viz. the taker-in side and the doffer side, and (4) sliver delivery is 400 m/min. A newly developed D-400 MS has 1 head 1 delivery and its maximum speed reaches 500 m/min. newly developed toothed mote knives instead of the conventional ones. In practice, the maximum cylinder speed is limited to 450 CD-500 N is designed for the combination with 4-12 carding rpm, and the production is also less than 200 lbs/hr in Japan. machines. However, it is reported abroad that many carding machines are High speed drawing frame with an autoleveller, Model DFK achieving high productivity over 2401bs/hr. From the standpoint made by Howa Machinery has 1 head 2 deliveries and 3 lines of various producing conditions including the raw cotton supplied pressure bar drafting system which uses 3 over 3 rollers with a and the sliver qualities required, it is difficult to compare directly turning roller. The unique roller arrangement can draw slivers of these figures mentioned above. But, it is a fact that the remodelled high quality with all fibers of cotton or man-made in the staple a high speed and high production card by Kanai could be driven lengths up to 76 mm.
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