Kabushiki Kaisha Kobe Seiko Sho

Kobe Steel, Ltd.

Masashi Konno

Nobuki Nagami

Shinichi Fukumizu

Osamu Ikeda

Taiji Orimo

Akira Nishiyama

Kimio Inoue

Yasuaki Yamane

Tatsuya Tanaka

Katsunori Takahashi

Yoshinori Kuroda

Masahiko Kashiwa

Kazuo Iritani

Shigehiro Kasai

Hiroyuki Takeda

Koichi Miyake

Hideo Funahashi

Kazuyoshi Imuta

Yasuo Yoshii

Yoshiaki Nakata

Nobuhiro Yamasaki

Yoshio Ikegami

Koji Minagawa

Norifumi Fukano

Osamu Tatsuda

Atsushi Shigeno

Taii Orimo

Hideki Uota

Hiroshi Ogasawara

Toru Yomogida

Jun Yamanaka

Tatsuo Yagi

Tatsuya Uemura

A cutter machine has a knife holdermounted onto a cutter shaftat the center portion, wherein a material to be cut is cut with knivesmounted onto the outer circumference of the knife holderby rotating the knife holderaround the cutter shaft. The knife holderis separated into a fixing membermounted onto the cutter shaftand a mounting memberonto which the knivesare mounted. The mounting memberis pivotally supported around two axes with respect to the fixing member. In the cutter machine, the knives and a die plate come into contact with each other by a small press force of the knives, thereby enabling a satisfactory cutting to be obtained.

Cutter machine

In a die plate having a hardened surface for sliding a knife, a plurality of WC alloy platesare diffusion-bonded to a base metal, whereby the hardened surface h is formed. A plurality of nozzle holes. . . are formed on each of the WC alloy plates. Each of the WC alloy platesis formed into a shape having a thickness of 2.5 mm or more and two adjacent edges 20 mm or more in length, wherein each edge is 200 mm or less in length. The die plate has high freedom in an arrangement of nozzle holes to enable a close arrangement of a number of nozzle holes, has an extended life with hardly causing dropping-off of a member constituting a hardened surface, and can be produced with a minimized number of processes.

Die plate

A kneaded product of a desired state of kneading is available by causing a material to be kneaded to flow in tip clearances between rotor segments 1b and 1b of screw sets 1 and 1 and an inner wall surface of a chamber 4 while rotating the screw sets 1 and 1 provided to the right and the left of the chamber 4, and imparting a shearing force for dispersion. Each rotor segment 1b has a plurality of kneading blade 7 having different distances between the segment center and the top, so as to achieve a plurality of tip clearances different at least in the circumferential direction when the segment center is aligned with the chamber center.

Twin-screw kneading apparatus

A driving mechanism for driving a gear pump of a dual drive type having two shafts comprises a reversing gear having a pair of output shafts which rotate respectively in opposite directions at the same rotating speed, and a pair of gear couplings connecting the gear pump to the reversing gear. One of the pair of gear couplings comprises: a shaft, a first coupling head disposed on one end of the shaft, and a second coupling head disposed on the other end of the shaft. The number z.sub.1 of teeth of the component external spur gears and internal spur gears of the first coupling head is not equal to the number z.sub.2 of teeth of the component external spur gears and internal spur gears of the second coupling head. The angular difference between the external spur gears of the second coupling head is converted into a corresponding number of teeth of the external spur gear of the third coupling sleeve by calculation using the difference between the central angle including one tooth of the external gear of the first coupling head and the central angle including one tooth of the external gear of the second coupling head, and the third coupling sleeve is turned through an angle corresponding to the calculated number of teeth.

Driving mechanism for driving a gear pump for forcing a highly viscous

Drive transmission mechanism for biaxial extruder

An underwater pelletizing apparatus for realizing and stabilizing a pressure to press a cutting knife against a die plate, for preventing shaft vibration, and for decreasing wear of the cutting knife. The die plate and a water chamber casing are removably mounted at a thermoplastic material extrusion opening section; the cutting knife is disposed at the front of the die plate; a cutter shaft with the knife mounted at the forward end thereof is rotatably and axially movably supported in the water chamber casing and a shaft supporting housing to thereby move the cutter shaft forward and backward by means of a fluid pressure cylinder; and a locking means is provided for intermittently locking the axial movement of the cutter shaft.

Underwater pelletizing apparatus

A melt pump comprises a pump housing having an intake port and a discharge port and a pair of gear rotors. Each of the pair of gear rotors having a gear part and a shaft part integrated with each other, which are arranged within the pump housing in such a manner as to be rotatable in mutually meshing condition. The melt pump further comprises a recovering passage for guiding resin leaking through a clearance between the pump housing and each of the pair of gear rotors into the intake port, a cooling hole drilled inside each of the gear rotors while facing to each clearance forming region; and a pipe inserted into the cooling hole for supplying cooling liquid. A sleeve for lining the internal periphery of the cooling hole is located in the hole so as to utilize the inside of the sleeve as a cooling liquid passage.

Melt pump

In an extruder of the type including an extruding cylinder with an outlet at one end thereof and an extruding screw rotatably disposed in the cylinder and circumferentially formed with a feed flight member for forwarding a plasticized material through the outlet of said cylinder for extrusion through a screen located at the fore end of the extruding cylinder, a screen/diverter changing mechanism including a retainer box fixed to the fore outlet end of the extruding cylinder and internally defining a flow passage of the plasticized material to be extruded; a slide body movable transversely in a guide bore of the retainer box across the flow passage thereof; a screen unit detachably fitted in the slide body and having a screen and a plurality of nozzles; a diverter unit detachably fitted in the slide body and having a diverting flow passage for diverting the flow of the plasticized material from the cylinder; a drive mechanism linked to the slide body for selectively positioning either the screen unit or diverter unit in the flow passage of the retainer box; and a die plate fixedly mounted on the front side of the retainer box and having a plurality of nozzles for extruding the plasticized material fed from the cylinder through the screen unit.

Screen/diverter changing mechanism for extruders

Growing community of inventors

Takasago, Japan

Masashi Konno