JPS6028496Y2 - Cutter for crusher - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a cutter for a pulverizer that is detachably attached to a blade mount of the pulverizer.

Conventionally, the cutter for a crusher that can be attached to and removed from a blade mount has mainly been a type in which the blade is closely attached to the blade mount and is directly screwed from the outside of the blade with a bolt or the like.

However, since the cutter of such a crusher is directly fixed with bolts, etc., the impact force applied to the cutter when crushing the material directly affects the bolt itself that stops it, so it is The fixation of the blade becomes loose, which reduces the cutting efficiency of the blade and causes the blade to break after being used for a short period of time.

The purpose of this invention is to provide a required number of recesses with tapered side surfaces that spread from the bottom to the top on the blade mount, and to integrate protrusions into the blade mount side of the recesses. On the other hand, the protruding piece and the groove are tightly fitted on the cutter attachment side of a cutter provided with a slot, and a taper is provided on both sides in a rear recess on the back of the cutter, and a material is provided on the top surface. By screwing the pressing member provided with a concave holding surface onto the blade mount, the blade can be stably and reliably fixed for a long period of time, and the blade can be replaced or adjusted by simply loosening the pressing member. An object of the present invention is to provide a cutter for a pulverizer which allows for extremely easy attachment and detachment of the blade and adjustment of the cutting edge.

This invention will be explained below according to embodiments shown in the accompanying drawings.

Reference numeral 1 denotes a blade mount, and the blade mount 1 is provided with recesses 2 at regular intervals.

The recess 2 has an end surface 3 with a taper that diffuses from the bottom to the top, and the end surface 4 of the recess 2 on the blade attachment side is integrally formed with a projection piece 5 from the lower part to the middle part.

When the cutter 7, which has a slot 6 that fits into the protrusion 5, is brought into close contact with the cutter mounting side end surface 4 of the recess 2 of the cutter mount 1, the slot 6 and the protrusion 5 are tightly fitted.

A pressing member 10 having tapers 8, 8 on the front and rear surfaces and a concave surface 9 for holding the material on the upper surface is fitted into the recess 2 at the rear of the back surface 11 of the tapered blade 7. ,
Screw it in with screws 12, etc.

The pressing member 10 has a front surface 8 and a rear surface 8 tapered approximately corresponding to the taper of the end surface of the recess 2, so that the more firmly the pressing member 10 is tightened with the screws 12, etc., the sharper the blade becomes. A strong pressing force is applied to the blade 7 from its back surface, and the blade 7 is strongly held immovably by the pressing force of the front surface 8 of the pressing member 10.

It is desirable that the concave surface 9 on the upper surface of the pressing member 10 is usually curved, and this concave surface 9 is related to the material crushing efficiency. This is to determine the allowable amount of material entrapment when crushing and pulverizing such materials.

In the embodiment described above, the rear end surface 3 of the recess 2 is tapered, but the blade mounting side surface 4 of the recess 2 does not necessarily have to be a tapered surface. In the case of a tapered surface When the cutter 7 is brought into close contact with the recessed cutter mounting side surface, the cutter 7 may be formed so that a taper is formed on the back surface of the cutter 7.

In the embodiment shown in the drawings, the cutting edge 13 is shown to be comb-shaped, but it may be flat or other.

This idea is based on the idea that when the cutter is held by the pressing force of the pressing member as described above, the protrusion and groove formed integrally at the lower end of the recess fit tightly together, so that the cutter is held on the side of the cutter. Shaking can be completely prevented and the durability of the cutter can be significantly increased.

In addition, the blade is not directly fixed with fasteners such as screws, but is indirectly fixed to the mounting base by screwing the pressing member with a tapered surface, so the blade can be removed or replaced without changing the pressing member. It is sufficient to loosen the tightening, and there is no need to attach or remove screws as in the case of direct fastening with screws, etc., as in the conventional method.

In addition, the mounting position of the cutter relative to the cutter mounting base is maintained accurately without lateral vibration, so when trying to arrange a large number of crusher cutters side by side without interruption, the degree of closeness between adjacent cutters can be controlled. This makes it especially useful for cutters for crushing plastic materials that do not like mixing of crushed materials.

Furthermore, in the present invention, the impact force on the blade during crushing is applied to the entire pressing member with a large volume, so the impact force is only indirectly transmitted to the screw, and therefore the fastening force of the screw is also long. It is retained for a period of time.

In addition, since the capacity of the concave portion of the concave surface provided on the upper surface of the pressing member that holds the material is related to the crushing capacity, the pressing member that changes the capacity of the concave portion is changed at any time depending on the processing amount. It has excellent effects such as being able to do the following.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; FIG. 1 is an exploded perspective view of the main parts, and FIG. 2 is a partially cutaway sectional view. 1-Blade mount, 2-Recess, 3-One end surface, 4-Blade mounting end surface, 5-Protrusion piece, 6-Slot, 7-Blade, 8-Tapered surface, 9-Concave surface, 10-Press member , 11-Back side of cutlery, 1
2-Screw.

Claims (2)

[Scope of utility model registration request] (1) A required number of recesses each having a tapered side surface that spreads from the bottom to the top is provided in the blade mounting base, and a projection piece is integrally formed on the blade mounting side surface of the recess. The protruding piece and the slot are tightly fitted on the cutter attachment side of the cutter, and the rear recess on the back of the cutter is tapered on both sides, and the upper surface is provided with a material-closing concave surface. A cutter for a crusher, characterized in that a pressing member made of a metal is screwed onto the blade mount. (2) Claim 1 of the above-mentioned utility model registration, characterized in that the protruding pieces are formed in a vertical line at the center of the width of the side surface on which the blade is attached.
Cutter for the crusher described in section.