DE2026745A1 - Arrangement for guiding recording media in document processing machines - Google Patents

Description

SIEMENSAKTIENGESBLLSGHAi ¹ T Munich, the "^" ÜÜf J ??

Witteisbacherplatz

VPA70 / 2072

Arrangement for guiding recording media in document processing machines

The invention relates to an arrangement for guiding of sheet or card-shaped recording media in Document processing machines in which the recording media are transported by transport rollers along a transport path transported and prevented by guide means from lifting off the transport track.

In document processing machines, the management of the recording medium special attention should be paid to avoid a bump or traffic jam. This problem occurs in particular in those document processing machines in which the recording media are not through rotating and belt drives themselves acting as guide means, but conveyed by transport rollers lings a transport track will. At today's processing speeds the recording medium in document processing machines, the recording medium is no longer liable to the Guide surface of the transport track. Rather, an air cushion forms between it and its base by which it is further lifted from the base becomes and rises with its leading edge. This effect becomes more noticeable the lower the stiffness of the material from which the recording medium is made and can cause the leading edge of a recording medium from the neighboring transport

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roller pair is no longer detected and this disruption of the Transportes causes a jam of the recording media.

In order to avoid such disruptions, thin guide plates made of Federatahl have been used above the transport path arranged, which prevent the ascending of the recording media. But now there are disruptions in the transport the recording medium cannot be avoided which can be traced back to other causes, for example insufficient Lateral guidance or damage to recording media. The traffic jam that still occurs on recording media must be able to be removed quickly and the guide plates must be arranged in this way be that they are easy to lift off the transport path. The disadvantage of this known guide means consists in the fact that they either already through the jam on the recording media themselves or when they are being removed these disturbances can be bent and then the exact guidance of the recording medium is no longer possible is guaranteed. In addition, these baffles are thin stamped parts that still have sharp edges, when they are deburred. So you represent a constant danger for an operator who can hurt them.

The invention is therefore based on the object of a To create an arrangement for guiding sheet-shaped or card-shaped recording media through which the recording media can be guided exactly during normal operation on the Traneportbahn, but also when they occur Malfunctions easy and accident-proof 'can be operated. In addition, the management of the recording medium is intended

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can be achieved with simple means that work precisely without adjustment and with high operational reliability.

This division is achieved according to the invention by that as a guide means flexible guide strips made of a purely elastically deformable material between in the transport direction adjacent transport rollers in such a way are arranged that they rest for the most part on the transport path. The usage of guide strips from a purely elastically deformable Material as a guide means inevitably means that adjustment is no longer necessary. They only have to be designed in such a way that the frictional forces exerted by them on the recording medium not too large and then recording media of low rigidity are slowed down. Besides that in the case of such a guide means, disturbances in the transport of the can also be traced back to other causes Recording media can be removed easily and safely can, an arrangement according to the invention also has the advantage that the task with a very is solved with little effort.

The ease of use of an arrangement according to the invention is even increased if, according to a further development, the flexible strips are not on the transport path resting end with a holding device on the drive shafts the transport rollers are rotatably fixed.

According to another development, the easy assembly of the guide means according to the invention is achieved in that the holding device consists of a resilient material

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and is bent into an eyelet that fits into a recess of the Drive shaft is rotatably cradled. Other white ^ Developments of the invention are characterized in subclaims.

A preferred embodiment of the invention is explained in more detail below with reference to the drawings. Eb shows:

> Fig. 1 schematically shows the section through part of a

Transport track with two adjacent transport rollers and a guide strip arranged between them, FIG. 2 is a schematic plan view of the part of the gymnastics track shown in FIG. 1.

The recording media AT are arranged along a transport path TB through above the transport path TB and counterclockwise rotating transport rollers TR conveyed. A single transport roller TR on a drive shaft AW above the center of the transport path TB or as here in the exemplary embodiment, respectively a pair of transport rollers are driven by a drive shaft and then arranged symmetrically to the center of the transport path TB.

During the transport of the recording media AT, they are pressed by the transport rollers TR against non-driven pressure rollers AR that support the transport rollers TR arranged opposite below the transport track TB are and engage in a recess LO of the conveyor track TB. Each between two adjacent transport rollers TR is arranged a guide strip FS made of rubber, the

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with its predominant part on the transport line TB rests. The inertia of this guide strip PS is dimensioned so that the leading edge of a recording medium AT is prevented from rising until it is removed from the next transport roller TR is captured.

A holding device is attached to the end of this guide strip IS not resting on the transport path TB HY glued on, with the door facing in the direction of transport in front of him drive shaft AW of the transport roller TR is set rotatably. For this purpose, the HT holding device consists of a spring rod, that is bent into an eyelet. This eyelet is in one Incision of the drive shaft AW hooked, the diameter of which is slightly smaller old the diameter of the eyelet. The guide strip PS is thus rotatably seated on the drive shaft AW of the transport roller TR and can still not wander back and forth in the axial direction on the drive shaft AW, so that at any time a exact guidance of the recording media AT is guaranteed by isf. In addition, the guide strip FS is simple to assemble, because the eyelet of the holding device HV is closed for this purpose only has to be pressed against the incision of the drive shaft AW, see elastic opens and snaps into the incision. However, it is just as easy to remove a jam that occurs in the recording media, which is caused, for example, by damage to a transported recording medium. To get to the transport lane, the guide strips FS only have to be folded away from the conveyor belt TB. For this they are in theirs Length to ensure that the

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ORIGINAL INSPECTED

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the end of this guide strip Drive shaft AW of the next transport roller! FR not yet touched.

The invention has been described using a simple embodiment. However, it is not limited thereon. While in the embodiment it was assumed that a pair of transport rollers is driven by each drive shaft and the associated guide strip is arranged between them, it is without further conceivable to apply the invention to arrangements, be.1 only one on a drive shaft single transport roller sits, which then engages in the middle of the transport path. In this case it could a guide strip should be provided on both sides of a transport roller in order to ensure an exact FUh- * to ensure the recording of the recording medium. It is also expedient for the guide strips to be rotatable on the drive shafts of the transport rollers and for example to provide shaft locking length instead of the recess, it is but not absolutely necessary. It is quite conceivable that the guide strips are also rigidly above the transport path, since according to the invention it is made of a purely elastically deformable material should exist and can therefore also be easily lifted off the transport track in this case.

4 claims 2 figures

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Claims (4)

Paten t a η β ρ r ti c h e 1. Arrangement for guiding sheet-shaped or card-shaped Recording media in document processing machines, in which the recording media are driven by transport rollers be transported along a transport track and prevented by guide means from lifting off the Traneportbahn are, characterized in that flexible guide strips as guide means (FS) made of a purely elastically deformable material between adjacent transport rolls (TR) are arranged in such a way that they become a * predominantly rest on the transport track (TB). 2. Arrangement according to claim 1 »d a d u r c h ge, indicates that the guide strips (FS) are not resting on the Traneportbahn (TB) The end is rotatable with a holding device (HV) on the drive shafts (AW) of the transport rollers (TR) are set. 3. Arrangement according to claim 2, characterized in that that the holding device (HY) | consists of a resilient material and an eyelet is bent, which is rotatably suspended in a recess in the drive shaft (AW). 4. Arrangement according to claim 2 or 3, characterized in that the flexible guide strips (FS) are made of rubber and are glued to the holding device (HY). VPA 9/210/0028 109850/0764 Blank page