Knife holder for a chipper disc

a technology of chipper disc and knife holder, which is applied in the field of improved knife holder for chipper disc, can solve the objectionable requirements of holmberg, and achieve the effects of reducing applied force, increasing firmness, and increasing ease of removing kni

Inactive Publication Date: 2006-01-10
KEY KNIFE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007]An improved knife holder for a chipper disc or the like according to the present invention solves the aforementioned problems and meets the aforementioned needs by providing a knife holder for holding a knife having a top and bottom side. The knife holder has a first clamping portion and a second clamping portion for clamping the knife therebetween. One of the clamping portions pivots about a pivot point for clamping the knife, and for releasing the knife, so that it may be easily removed from the knife holder. In the relative position of the firsts and second clamping portions in which the knife is clamped and in their relative positions in which a space is opened up around the knife permitting its removal, the first and second clamping portions are rigidly disposed with respect to one another.
[0010]It is another object of the present invention to provide such a knife holder and method that provides for increased ease of removing the knife from the knife holder.
[0012]It is still another object of the present invention to provide such a knife holder and method that provides for holding the knife with increased firmness and with decreased applied force.

Problems solved by technology

It has been a problem to ensure firm attachment of the knives while providing for their easy removal from the knife holders.
As the knife is heavy and difficult to handle and it is desirable to be able to use two hands for this purpose, the aforementioned requirement imposed by Holmberg is objectionable.

Method used

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Examples

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Embodiment Construction

[0017]A knife holder according to the present invention is particularly adapted for attachment to chipper or waferizer discs and drums for cutting wood chips or flakes from pieces of wood, such as whole logs, lumber and waste wood. The application, however, is not essential to the invention.

[0018]Referring to FIG. 1, a preferred, disc embodiment of the invention is shown. The knife holder 10 is adapted to receive an existing removable knife 12 which may have a number of different shapes. For receiving the knife 12, the knife holder includes a top clamping portion 14 and a bottom clamping portion 16. Each of the clamping portions is shaped to fit the knife. Particularly, the top clamping portion is shaped to fit a top surface 18 of the knife and the bottom clamping portion is shaped to fit a bottom surface 20 of the knife.

[0019]The top clamping portion 14 is rigidly attached to a base 50 by bolts 40. The top clamping portion is seated on a ledge 26 so as to space the top clamping por...

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Abstract

An improved knife holder for a chipper disc. A knife holder for boding a knife has a first clamping portion and a second clamping portion for clamping the knife therebetween. One of the clamping portions pivots about a pivot point for clamping the knife and for releasing the knife so that it may be easily removed from the knife holder. In the relative position of the clamping portions in which the knife is clamped and in their relative positions in which a space is opened up around the knife permitting its removal, the clamping portions are rigidly disposed with respect to one another.

Description

BACKGROUND OF THE INVENTION[0001]The present invention relates to an improved knife holder for a chipper disc or film apparatus for producing chips or flakes from a piece of wood.[0002]It is common to form chips for producing wood pulp for use in the manufacture of paper products, employing apparatus known as chippers a choppers, and to produce flakes or wafers for use in the manufacture of waferboard or oriented strand board, employing similar apparatus known as waferizers and stranders. All of these apparatus employ a disc rotating in the vertical plane and having one or more knives attached to knife holders disposed so that cutting edges thereof extend beyond the face of the disc. A piece of wood is fed against the face of the disc and the knives, so that cuts are made in the wood, producing the chips or flakes. The knives experience, very large forces and must be held firmly in place.[0003]However, the knives must be removable from the knife holder, for reversing a replacing the...

Claims

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Application Information

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IPC IPC(8): B27C1/00B02C18/00B02C18/14B27L11/00
CPCB02C18/143B27L11/005Y10T407/1922Y10T407/23
InventorSWARTWOOD, TROY M.KELLER, DOUGLAS O.SCHUH, LOREN R.
OwnerKEY KNIFE