FR2499529A1 - RUBBER DRIVER STRIPPER FOR THE INTERMITTENT FEEDING OF CARDBOARD OR PAPER SHEETS - Google Patents

Abstract

RUBBER DRIVE BELT FEEDER INCLUDING, INTERCALS BETWEEN THESE STRIPS 1, FIXED SUPPORTS 3 CAPABLE OF SUPPORTING STACK 4 OF CARDBOARD SHEETS OR PRE-CUT PAPER, AS WELL AS 5, 6, 7, 8, 12 FOR LIFTING THESE BANDS 1 CYCLICALLY, IN ORDER TO BRING THEM IN CONTACT WITH THE LOWER FACE OF THE SHEET UNDER BATTERY 4 AND TRAIN IT BY FRICTION THROUGH A LIGHT DEFINED BY A GAUGE 9 CONSTITUTING THE FRONT OF THE BATTERY TANK RETAINING THE BATTERY 4, TOWARDS THE EXTERIOR, FROM WHERE IT IS DIRECTED BY MEANS OF PRESSURE 10 AND GUIDING ROLLERS 11, TOWARDS ANY OPERATING MACHINE WITH A VIEW TO SUBSEQUENT PROCESSING.

Description

The present invention relates to a feeder belt feeder in

  rubber, for intermittent feeding of cardboard or uncovered paper

weight.

  As is known, in machines intended for work or fa-

  cutting of cut paper, cardboard sheets or the like we use

  usually feeders with rubber drive belts.

  In these feeders, the boxes or papers cut flat are

  crushed between vertical guides, adjustable according to the format of the sheets (and constituting the tank), and rest directly on bands

  rubber drive running at an appropriate speed.

  Opposite said stack of sheets are arranged one or more

  calibers adjustable in height and which define a small light through

  to which it can only pass one sheet at a time.

  Naturally, these feeders operate continuously, so that they cannot be used with machines for the work of

  cardboard or cut paper with cy-

  clicks (folders, gluers and others) and which therefore require controlled feeding, commonly called "jerking", or "timed",

or also "rhythmic".

  The main object of the present invention is to eliminate this limitation by making a feeder with rubber drive belts.

  capable of feeding sheets of cardboard or cut paper

  discontinuous, synchronized with the requirements of an operating machine

  successive ratrix for the work of these same leaves.

  Another object of the present invention is to realize a market.

  rubber belt drive in which the stack of sheets of cardboard or cut paper does not rest directly on these same

  strips, so as not to cause them to relax.

  These goals, and others which will become more apparent hereinafter, are achieved by the rubber drive belt feeder.

  according to the present invention, characterized in that it comprises, in-

  tercalées between said strips, fixed supports which support the stack of sheets of cardboard or cut paper, as well as means capable of lifting cyclically these same strips, so as to bring them into contact with the underside of the first sheet of the stack, driving it, by the force of friction, through the light defined by

  the front caliber which is an integral part of the tank.

  Advantageously, the cyclic lifting of said rubber bands,

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  operating at an appropriate speed, is ensured by a roller mounted

  tative on two arms and likely to oscillate around a horizontal axis-

  tal under the action of a disc cam.

  Naturally, the rotation of this cam is synchronized with the cy-

  operating key of the machine which we want to supply, so as to cause the introduction of different daiis sheets.

  machine at preset time intervals.

  In particular, said fixed supports for supporting the sheet pile

  those of cardboard or cut paper have, at the level of said roller, a concave portion able to allow an appropriate lifting of this same roller, so that the latter can push the drive belts into

  rubber against the bottom sheet of the stack.

  It should also be emphasized that the oscillation of said roller around the support axis of the arms on which it is rotatably mounted can also be obtained by other suitable kinematic systems.

of transformation of the movement.

  Other characteristics and advantages of the feeder belt feeder

  rubber, object of this Patent, will be better

  understood on reading the following description of a form of realization

  preferred sation, given here by way of example only with reference to the drawing an-

attached, on which

  - Figure 1 is a vertical sectional view of the feeder according to the

  vention with the drive bands in the lowered position relative to the plane defined by the fixed supports for supporting the stack of sheets of cardboard or cut paper; - Figure 2 is a sectional view of the feeder similar to that of Figure 1, but with the drive belts brought into contact with the battery

  of sheets, so as to determine, by the force of friction, the cn-

  dragging of the lower sheet of this same pile; - Figure 3 is a schematic top view of the feeder according to the

present invention.

  In accordance with the reference numbers of the figures in the appended drawing,

  the object feeder includes a series of rubber training bands

  chouc (1), parallel and suitably stretched between two rollers (2) and

  (2 '), at least one of which is a conductor.

  Between these same bands are interposed fixed supports (3) consisting

  killed by horizontal rectilinear bars which define a plane of ap-

  then at a height suitably greater than that of said strips.

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  Thanks to this arrangement, the stack (4) of sheets of cardboard or paper

  pierced pier is supported by the plane defined by said horizontal bars-

  which bars have on their lower periphery a

  pcrticJn with concave conformation (5).

  Along the recess materialized transversely to said bars by these same concave portions, is disposed a horizontal roller (6: rotatably mounted by its two ends on two arms (7).

oscillating on a crazy tree (8).

  In practice, by pushing up the same roller, it

  causes the drive belts (5) to be raised by bringing them in contact

  tact with the bottom sheet of the stack (4).

  In this circumstance, said bands cause the same film-

  the lower beyond the gauge (9), which stops the upper sheets, sending it, thanks to the combined action of the backpressure rollers (10) and the guide rollers (11), to the machine intended to perform

  the successive shaping operations of this same sheet of paper.

  The lifting of the roller (6) may, in particular, be caused by

  a pair of disc cams (12) rotating in contact with this same roller.

  Naturally, the speed of rotation of these same disc cams is-

  be adapted to the operating cycle of the machine to be fed.

  It appears clearly, in the light of the above description

  and the accompanying drawings, that the feeder which is the subject of this invention patent has functional characteristics and practicality of use

  much superior to those of the feeders of the known technique.

  Naturally, the object feeder and its methods of realization

  have been described and illustrated only by way of nonlimiting example.

  That said, it goes without saying that the rubber belt feeder

  chouc object of the present invention may, just like its parts

  many modifications and variants, according to the different manufacturing requirements and the specific use of the

  feeder, as well as any improvements that may be suggested-

  res through practical experience, without departing from the framework of the pre-

feels industrial protection.

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Claims (3)

  1. Feeder with rubber drive belts, characterized in that it comprises, interposed between said bands 1, fixed supports 3 capable of supporting the stack 4 of sheets of cardboard or cut paper, as well as means for lifting these strips 1 cyclically in order to bring them into contact with the underside of the sheet of the bottom of the stack 4, and drive it through a light defined by a caliber 9 constituting the front of the holding tank of stack 4, outwards,   from where it is directed to any operating machine for the purpose of processing later.   2. Feeder according to claim 1, characterized in that the fixed supports are constituted by rectilinear horizontal bars 3 which define a support plane at a level higher than that of the strips drive 1.   3. Feeder according to claims 1 and 2, characterized in   that the horizontal bars 3 have at the lower part a cavity forming with all of these bars 3, arranged in parallel, a transverse groove serving as a housing with play for a roller 6 mounted idly and   18 supported at the ends by two oscillating arms 7 wedged on a loose shaft 8.