Protection device for tool-holders for tools for shredding, cutting and collecting material

Abstract

A protection device for tools for cutters and shredders and the like, arranged on a tool-holder seat for a tool-holder rotor rotatable about the axis of the rotor, said tool being housed in a seat arranged on the tool-bolder rotor, and formed by a first surface arranged at the front in the cutting direction and a second surface onto which the tool is fixed with its opposite surface to the cutting direction, the tool having a body that has a front surface in the rotation direction of the rotor, and a rear surface opposing the front surface. The tool and/or the seat having lateral projections and a protection device is dismountable connected to the seat of the tool, laterally as a protection for the tool and the plates being arranged partially between the lateral projections, of the tool and/or the seat of the tool, and the tool-holder rotor.

Claims

1. An apparatus comprising: a tool-holder rotor rotatable about an axis; a tool-holder seat arranged on the tool-holder rotor; a tool for cutters and shredders being housed in the tool-holder seat and having a cutting direction, wherein the tool-holder seat onto which the tool is fixed comprises a front part in the cutting direction of the tool and a rear part opposite the front part, and wherein the tool comprises a body that has cutting edge in the rotation direction of the tool holder rotor, and a tool lateral projection opposite the cutting edge; lateral projections are provided on the tool-holder seat or the tool in such a manner that the lateral projections are spaced along the axis of the tool holder rotor; a protection device connected to the tool-holder seat in a dismountable way by bolts, wherein the protection device comprises two plates arranged on either side of the tool-holder seat.

2. The apparatus according to claim 1, wherein the protection device has a projection arranged at a front of the tool in the rotation direction, for limiting cutting depth.

3. The apparatus according to claim 1, wherein an insert is arranged between the plates provided for the tool in the rotation direction.

4. The apparatus according to claim 3, wherein the insert has a projection for limiting the cutting depth.

Description

(1) DESCRIPTION OF THE DRAWINGS

(2) Further details and characteristics of the invention will become apparent from the claims and the following description of a non limiting preferred embodiment, depicted in the attached drawings, wherein:

(3) FIG. 1 shows a schematic perspective view of a tool-holder rotor with a protection according to the invention.

(4) FIG. 2 shows a section of a tool-holder rotor with a protection according to the invention.

(5) FIG. 3 shows a front view of a section of a tool-holder rotor with a protection according to the invention.

(6) FIG. 4 shows a perspective view of a tool-holder rotor with a protection according to the invention.

(7) FIG. 5 shows a lateral view of a protection according to the invention.

(8) FIG. 6 shows a perspective view of a section of a tool-holder rotor with a protection according to the invention.

(9) FIG. 7 is a perspective view of a further second embodiment, and

(10) FIG. 8 shows an exploded view of FIG. 7.

DETAILED DESCRIPTION OF THE INVENTION

(11) in FIG. 1 a tool-holder rotor is indicated with reference number 100, on which a series of seats for tools 10 is fixed. These seats 10 can be welded to the tool-holder rotor 100. The tool-holder seats are formed by a front part 11 in the cutting direction and a rear part 12, Between the front part 11 and the rear part 12 a tool 1 is inserted. This tool 1 can be inserted by means of a geometric coupling between the front part of seat 11 and the rear part 12, Advantageously the toot 1 can be fixed by means of a bolt 13.

(12) The tool-holder seat 10 and/or the tool have lateral projections 14,15.

(13) For shredding/working different tools can be used according to the material to be processed, if tool 1 used has a particularly sharp cutter 1a there is a risk of entanglement of the material. To avoid this jamming the cutting depth of cutter 1 is limited.

(14) According to the invention a plate 16,17 is connected on both sides of the base of the tool-holder seat 10 in a removable way which forms a protection 2,3, This plate 16,17 is inserted between the projection 14,15 and the tool-holder rotor 100. Advantageously on both sides lateral projections of the tool-holder seat 14 and lateral projections of the tool 15 are provided.

(15) Advantageously the plates 16,17 cover the entire base of the tool-holder seat 10 below and at the front and at the rear of projection 14. In this way the tool-holder seat 10 base is protected from any damage due to stones or other materials.

(16) Fixing of the protection is achieved by means of a geometrical coupling. Advantageously protections are connected also with each other by means of bolts 8,9 or the like and these connecting bolts can rest on the outer surface of the tool seat 10 or pass through the tool seat 10.

(17) Advantageously the protections 2,3 are formed so as to have a recess 5 respectively arranged at the front of the tool. This recess is adapted to form a flow of material which is directed from above towards the cutter so as to create a wave. This wave allows a continuous flow of material to be cut.

(18) In FIG. 7 a further protection for a tool is illustrated in a second embodiment. In this embodiment an insert 28 arranged between the plates 22 and 23 is provided for the tool in the rotation direction. This insert 28 is formed so as to further limit the cutting depth of the tool. Advantageously the insert forms a bowl ready for the tool so as to form a flow of material from below towards the tool maintaining a cutting length limit and to prevent direct impact to the tool. Advantageously the insert is fixed by means of bolts 27a and female nuts 27b between the plates 22 and 23 and has a projection for limiting the cutting depth.

(19) Finally it is clear that additions, changes or variations to the protection for tools for collection and/or shredding tool 1 described herein can be applied which are obvious to a person skilled in the art without departing from the scope of protection provided by the attached claims.

KEY OF REFERENCE NUMBERS

(20) 1. Tool 1. a cutting tool 2. Protection 3. Protection 4. holes 5. recess 7. bolt 8. bolt 9. bolt 10. tool seat 11. front pert of the tool seat 12. rear part of the tool seat 13. bolt 14 lateral projection of the tool seat 15 lateral projection of the tool 16 plate 17 plate 22 plate 23 plate 27a bolts 27b nuts 28 insert 100 tool-holder rotor