Rubber extrusion device

Patent metadata

Field	Value
Publication number	US-9566737-B2
Application number	US-201314420703-A
Country	US
Kind code	B2
Filing date	Aug 30, 2013
Priority date	Sep 3, 2012
Publication date	Feb 14, 2017
Grant date	Feb 14, 2017

Abstract

The present invention can save space. A rubber extrusion device ( 1 ) containing a rubber extruder ( 2 ) for kneading rubber and extruding same from a discharge port ( 7 ), and a gear pump ( 3 ) connected to the discharge port ( 7 ) of the rubber extruder ( 2 ). The rubber extruder ( 2 ) has a cylinder part ( 4 ), which houses a rubber extrusion screw ( 5 ), above the floor surface on which the rubber extruder ( 2 ) is placed. The gear pump ( 3 ) contains an electric motor ( 8 ), a decelerator ( 9 ) linked to the electric motor ( 8 ), and a gear pump main body ( 10 ) linked to the decelerator ( 9 ). A pair of gears ( 11 ) which meshes with one another is installed in the gear pump main body ( 10 ). The electric motor ( 8 ) and the decelerator ( 9 ) are disposed in a space below the gear pump main body ( 10 ) or the cylinder part ( 4 ). Moreover, the output shaft ( 9 b ) of the decelerator and one of the gears ( 11 ) are linked by means of a wrapping transmission means.

First claim

The invention claimed is:

1. A rubber extrusion device comprising:
a rubber extruder for kneading rubber and extruding the same from a discharging port and a gear pump connected to the discharging port of the rubber extruder;
the rubber extruder comprising a cylinder portion arranged above a floor on which the rubber extruder is placed, a rubber extrusion screw installed in the cylinder portion and a first electric motor for driving the screw;
the gear pump comprising a second electric motor, a reducer linked to the second electric motor and having an output shaft and a gear pump main body linked to the reducer;
the gear pump main body comprising a chamber having an inlet port for receiving rubber extruded from the rubber extruder and an outlet port for discharging rubber out from the gear pump, and a pair of gears meshing one another installed in the chamber for pumping rubber toward the outlet port;
the gear pump main body fixed to the cylinder portion of the rubber extruder so that the inlet port is adjusted to the discharging port of the rubber extruder;
the second electric motor and the reducer being arranged in a space below the cylinder portion or the gear pump main body wherein the second motor comprises a rotating shaft arranged in parallel with an axial direction of the cylinder portion of the rubber extruder; and
the gear pump further comprising wrapping transmission means for linking between the output shaft of the reducer and one of the gears.

2. The rubber extrusion device according to claim 1 ,
wherein the gears are arranged so that the respective rotating axes of the gears and the cylinder portion are cross at right angles, and
the reducer comprises a rotation direction changing device for transmitting torque generated from the rotating shaft to the gears by changing a direction of the torque.

3. The rubber extrusion device according to claim 1 ,
wherein the wrapping transmission means is a chain or a belt.

4. The rubber extrusion device according to 1 ,
wherein the second electric motor and the reducer are fixed to the floor, and
the gear pump main body and the reducer are connected through a support member.

5. The rubber extrusion device according to claim 2 ,
wherein the wrapping transmission means is a chain or a belt.

6. The rubber extrusion device according to claim 2 ,
wherein the second electric motor and the reducer are fixed to the floor, and
the gear pump main body and the reducer are connected through a support member.

7. The rubber extrusion device according to claim 3 ,
wherein the second electric motor and the reducer are fixed to the floor, and
the gear pump main body and the reducer are connected through a support member.

8. The rubber extrusion device according to claim 1 ,
wherein the second electric motor is covered entirely with the cylinder portion of the rubber extruder in a plan view of the extrusion device.

9. The rubber extrusion device according to claim 7 ,
wherein the second electric motor is covered entirely with the cylinder portion of the rubber extruder in a plan view of the extrusion device.

Assignees

• Sumitomo Rubber Ind

Inventors

• Onimatsu Hiroyuki

Classifications

• B29C48/387

  using a screw extruder and a gear pump · CPC title

• B29D30/60

  by winding narrow strips · CPC title

• B29C48/685

  characterised by their inner surfaces, e.g. having grooves, projections or threads · CPC title

• B29C48/022

  characterised by the choice of material · CPC title

• B29L2031/001

  Profiled members, e.g. beams, sections · CPC title