Dies and granulators

Abstract

To provide a die capable of efficiently manufacturing a pellet.SOLUTION: A die according to one embodiment of the present technology includes: a first surface having a plurality of first openings having a first opening diameter to which a raw material is supplied; a second surface on which a compressed raw material is extruded and including a plurality of second openings having a second opening diameter smaller than the first opening diameter; and a plurality of through holes provided respectively between the plurality of first openings and the plurality of second openings and into which the raw material is pushed. The plurality of through holes has a first passage portion having a curved surface portion whose diameter decreases from the first opening side to the second opening side, and a second passage portion having the second opening diameter and formed cylindrically at the second opening section side from the first passage section. A diameter reduction rate of the curved surface portion increases from the first opening side to the second opening side.SELECTED DRAWING: Figure 3

Claims

1. A wood material is supplied to a first surface having a plurality of first openings having a first opening diameter, The compressed wood material is extruded to form a second surface which includes a plurality of second openings having a second opening diameter smaller than the first opening diameter, A plurality of through holes are provided between the plurality of first openings and the plurality of second openings, into which the wood material is pressed. In a die having, The aforementioned plurality of through holes are A first passage portion having a curved surface portion that decreases in diameter from the first opening side toward the second opening side, It has a second passage portion having the second opening diameter and formed cylindrically from the first passage portion to the second opening, The reduction ratio of the curved portion increases from the first opening side toward the second opening side. Dice.

2. A die according to claim 1, The first passage portion is provided between the first opening and the curved surface portion, and further comprises a guide portion which is a tapered surface that narrows in diameter toward the curved surface portion and has a minimum opening diameter that is larger than the second opening diameter. Dice.

3. A die according to claim 1, The first passage portion further comprises a cylindrical straight portion provided between the first opening and the curved portion. Dice.

4. A die according to claim 1, The curved portion is formed between the first opening and the second passage portion. Dice.

5. A die according to claim 1, The maximum opening diameter of the curved portion is the first opening diameter, and the minimum opening diameter of the curved portion is the second opening diameter. Dice.

6. A die according to any one of claims 1 to 5, The area near the second passage portion of the curved surface is parallel or substantially parallel to the first surface. Dice.

7. A casing configured to allow wood material to be inserted, A die according to any one of claims 1 to 5 into which the wood material to be filled inside the casing is pressed, A roller that rotates on the first surface of the die while pushing the wood material into the through hole of the die, A cutter is positioned on the second face side of the die and cuts the extruded wood material, A granulator that includes a granulator.

Images