FR2481186A1 - ECRASEUR KNIFE HOLDER - Google Patents

Abstract

A SUPPORT FOR A ROTATING CRUSHER KNIFE USED IN CONJUNCTION WITH A PRESSURE ROLLER. ABOVE THIS PRESSURE CYLINDER 2, WHICH IS LOCATED ON THE SIDE OF THE KNIFE HOLDER, IS BOLTED ON A SEPARATION PLATE 15, BY MEANS OF SIDE TENSIONS 25, AT LEAST ONE CONJUSTING UPPER PRESSURE CYLINDER 1; THE CORRESPONDING UPPER PISTON 3 IS ARRANGED TO EXERCISE ITS PRESSURE ON THE PISTON 4, WHICH IS LOCATED ON THE SIDE OF THE KNIFE HOLDER, THROUGH A TUBULAR PUSHBUTTON 17, GUIDE IN THE SEPARATION PLATE 15, WHILE THE PRESSURE CYLINDERS 1, 2 COMMUNICATE THROUGH THEM THROUGH AXIAL DRILLS 35, PRACTICED IN THE UPPER PISTON AND IN THE SEAL 36, THROUGH THE PUSHBUT 17 AND THE ORIFICES 31. THE INVENTION APPLIES TO THE SLITTING OF CONTINUOUS SHEETS IN THE MATTER THICK.

Description

The present invention relates to a clamping support

  hydraulically or pneumatically adjustable, for a

  rotary crushing drum operating in conjunction with a pressure roller and used for slitting continuous sheets, especially in the case of thick materials such as cellulose wadding, with a pressure cylinder whose piston is directly connected with the carrier fork of the crushing knife, whose cylinder has a flat box-shaped structure arranged so that its short side is parallel to the axis of the knife

  crush, and centered with respect to this axis.

  Such a crusher knife holder is known from German Patent Specification No. 1,072,878 issued to the author of the present invention; it has the advantage that in the available space in the direction

  axial end of the slitter, determined by the minimum cutting width

  If possible between adjacent supports, it is possible to accommodate a relatively large effective piston area, which allows to exert on the crusher knife, which is adjusted clamping, the desired high crushing pressure. Such media

  crusher knife have an axial size of 9 to 11 milli-

  meters, thus making it possible to achieve small cutting widths.

  For treated materials which, with the possibility of

  cutting widths require even higher pressures.

  on the adjusted knife, it is known to extend the long sides of the cylinder of the cylinder in the spaces which are not

  not occupied by other elements of the machine. With this

  however, the cylinder of the cylinder is deported by

  to the axis of the crusher knife, so that the fork

  of the knife is subject to a reversal torque, due to the clamping force, the result is a tendency to

  jamming may cause disturbances in operation.

  To increase the clamping force, with a small

  axial bracing of the crushing knife support, it is also known

  to give the cylinder a cylinder shape of revolution, of

  to separate it from the knife support and connect it to the knife support by means of a flexible

  This is only possible in a specially constructed slitting machine.

  for that. This expensive construction is also af-

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  with a tendency to disturb the functioning of the

  because of jamming, attributable here to the flexible shaft.

  In order to be able, with a crusher knife support of the type described in the preamble and respecting the low value of the axial size, to obtain without jamming and with a safe operation an even greater clamping force,

  support that can also be installed retrospectively on

  Existing machines of any construction, the combination of the defined features is proposed according to the present invention.

  in the present patent application.

  Thanks to the parallel coupling by conjugation of forces of the two conjugated flat rectangular pistons, all conditions

  equal, we obtain a doubling of the value

  sible clamping knife against the support shaft, hard as duver, which is equipped with the machine, while the disposition.ifon two cylinders, one above the other in the axial direction, ensures optimal use of space

  available in this direction for mounting on

traditional dyes.

  -The tubular structure of the pusher, between the two pistons,

  allows the circulation of the pressure medium without any noticeable

  the moment of mechanical inertia of the pusher, so that for each knife support there is only one connection element for the pressure medium, and at no point the

  transmission of force gives rise to a couple of

  payment. The invention is illustrated by the schematic representation of an exemplary embodiment, the figures respectively show

  Figure 1: an elevational view, in axial section.

  Figure 2: a profile view, partially cut.

  Through its ball bearing 20 and the withdrawable pin 13, the crusher knife 12 is fixed in oblique slots provided at the ends of the arms 10 which, together with the riveted cross member 11 form a knife-carrying fork of which

  the arms can move in the direction of the tightening

  the inner longitudinal grooves 33 of the guide plates 8 and 9. The clamping force is transmitted by a rod

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  threaded 16 which is screwed down into the cross member 11 of the holder

  knife and at the top in the lower piston 4; this last

  placed in the body of the lower cylinder 2 receives on its "U" joint 32 the force exerted by the pressurized air coming through the connection 30 in the upper cylinder body 1 and then through the axial drilling 35 in the "h" gasket 36 and the corresponding piston 3 as well as in the tubular pusher 17 from which it escapes through the radial orifices 31. The tubular pusher 17 is guided in an intermediate plate 15 clamped between the two cylinder bodies 1, 2 bolted between a clamping plate 14 and the intermediate mounting parts 6, 7 by means of the two common tie rods 25. The sealing of the tubular pusher 17 is ensured by means of an O-ring 21 embedded in the upper part. 2. In the direction opposite to that of the clamping, the single-acting pistons 3, 4 are pushed by two upper coil springs 19 embedded in the intermediate plate 15 and by two springs.

  24 lower flanges embedded in the clamping plate 14.

  The guide plates 8, 9 are screwed together in an adjustable manner by means of the intermediate mounting parts 6, 7 with the recessed head screws 27, by means of a spacer ring 28 and a sleeve 26, the elements The clamps 18 are arranged, for longitudinally adjustable guide, on the. knife bar with prismatic section, known and not shown,

of the slitting machine.

  The longitudinal grooves 33 of the guide plates 8,

  9 open at the bottom, through trans-

  8, 9 in lateral recesses of these guide plates, so that in the raised position (not shown) of the knife holder 10, 11 fork-shaped, can be removed

  the crushing knife 12 forwards (to the right in the

  2) together with its ball bearing 20 and its disengaging spindle

  chable 13, we can thus perform the replacement without any

  tools or any other disassembly work.

_ Y_ 248118 $ 5

Claims (1)

  1. Support with adjustable clamping by hydraulic way   or pneumatic, for a rotating crusher knife used jointly   with a pressure roller for slitting thick sheets of continuous material such as cellulose wadding, the piston of the press cylinder is connected directly with the fork-shaped member carrying the squashing knife and whose cylinder is pressure has a box-shaped structure   flat symmetrical above the axis of the neck.   Crushing water with its small side parallel to the latter,   the fact that above this pressure cylinder (2) which is on the side of the fork-shaped knife holder is bolted to a separating plate (15) by means of tie rods   side members (25), at least one upper pressure cylinder   (1) and that the corresponding upper piston (3) is arranged to exert its pressure on the piston (4) which is on the side of the fork-shaped knife holder by means of a tubular pusher ( 17) guided in the separating plate (15), while the pressure cylinders (1, 2) communicate with each other through axial drilling (35) in the upper piston and in the gasket (36). U "of it through the tubular pusher (17) and through the orifices   (31) provided at the lower end of this pusher.