Kneading device

• US 6,767,123 B2
• Filed: 03/27/2003
• Issued: 07/27/2004
• Est. Priority Date: 08/15/2001
• Status: Expired due to Term

• Current Assignee: Morinaga & Company Limited
• Original Assignee: Morinaga & Company Limited
• Inventors: Ohno, Yoshihiro, Kimura, Tsuguo, Kanai, Akishige, Masukawa, Sumio
• Primary Examiner(s): SOOHOO, TONY GLEN
• Application Number:
  US10/397,223
• Publication Number:
  US 20030185092A1
• Time in Patent Office: 488 Days
• Field of Search: 366/314, 366/300, 366/301, 366/302, 366/307, 366/297, 366/293, 366/295, 366/79, 366/81, 366/84, 366/85, 366/83, 366/86, 366/299
• US Class Current: 366/81
• CPC Class Codes: A23G 3/0215 Mixing, kneading apparatus
• CPC Class Codes: B01F 23/47 involving high-viscosity liquids, e.g. asphalt
• CPC Class Codes: B01F 23/471 using a very viscous liquid and a liquid of low viscosity
• CPC Class Codes: B01F 27/1143 screw-shaped, e.g. worms
• CPC Class Codes: B01F 27/1144 with a plurality of blades following a helical path on a shaft or a blade support
• CPC Class Codes: B01F 27/7221 the stirrers being composed of helices and paddles on the same shaft, e.g. helically arranged ovally shaped paddles
• CPC Class Codes: B01F 35/531 with baffles, plates or bars on the wall or the bottom
• CPC Class Codes: B29C 48/402 the screws having intermeshing parts
• CPC Class Codes: B29C 48/41 Intermeshing counter-rotating screws
• CPC Class Codes: B29C 48/565 having projections other than the thread, e.g. pins
• CPC Class Codes: B29C 48/687 having projections with a short length in the barrel direction, e.g. pins

Abstract

A kneading device kneads a main raw material of high viscosity and a secondary raw material of liquid or powder and continuously delivers a kneaded raw material obtained, and a ropesizer includes a sheet forming unit, and a delivering unit applies a second raw material onto a first raw material, which is elongated into a sheet shape and is conveyed by the sheet forming unit, so as to be in a strand form.

Claims

1. A kneading device which kneads a raw material of high viscosity and a raw material of low viscosity and continuously delivers a raw material mixture obtained, comprising:

a casing;

a pair of screw shafts disposed parallel to each other in said casing; and

a drive unit to rotate said screw shafts, wherein

a helical portion is formed at one end of said pair of screw shafts so that said raw material is conveyed from one end of each of said pair of screw shafts to the other end, and

a plurality of mixing pins is provided with the other end side of said screw shaft with regard to said helical portion in the circumferential direction of said screw shafts wherein

at least one mixing pin is provided at the inside of said casing,

the Dlurahtv of mixing pins Drovided with said vair of screw shafts are arranged at a height so that they overlap with each other between said pair of screw shafts in such a manner that they do not interfere with each other, and

an overlapping portion of the mixing pins between said pair of screw shafts is eaual to or less than a half of the height of the mixing pin.

2. A kneading device according to claim 1, wherein

said plurality of mixing pins are formed in a flat plate shape and are obliquely disposed with respect to a rotation axis of said screw shaft so that the surfaces of said mixing pins facing the other end of said screw shaft face the rotation direction of said screw shaft, and

a cover for sealing the inside of said casing is provided with said casing so that 5-50% of the inside volume of the sealed space is empty.