JP2002003019A - Device for aligning printing carrier in printing technical machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an aligning device having a simple and inexpensive structure and certainly functioning, by improving a device for aligning printing carriers such as paper sheets or film sheets in a conveying route of a printing techical machine. SOLUTION: The aligning device has a drum 11, and at least one of turnably journalled aligning wheels 16; 25 disposed on the outer surface of the drum 11. An angle line of the aligning wheel 16; 25 can be directed by an adjusting force Fstell so as to make an acute angle with respect to a stopper edge 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The invention relates to a method for transferring print carriers, such as sheets or film sheets, on the transport path of a printing machine, in particular between a storage container for print carriers and a printing station or between a printing station and a subsequent processing device ( For example, a binding device, a binding device, and a device for aligning in a transport path between the collecting container and the storage container.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. Sho 6212642 discloses a sheet aligning apparatus for a copying machine. The sheet is aligned with the stop or guide. Wheels mounted on the pivot arm are adapted to contact the seat surface of the seat to be aligned. A spring exerts an adjusting force on the pivot arm, whereby the line of action of the wheel is inclined by a certain angle relative to the stop. Therefore the force component P ₁ of the side is exerted on the sheet by the wheel, this component force is conveyed toward the sheet to the stopper. When the sheets are aligned, the lateral force P
₁ is removed so that the drive element pivots back to the stop, so that the line of action of the wheel is parallel to the direction of sheet transport.

[0003] Similarly, EP-A-0 496 398 discloses a sheet transport device for aligning sheets in relation to an alignment edge. For alignment, a rotatable shaft is guided above the alignment edge through a slit, this shaft being provided with a transport roller. The shaft is mechanically loaded towards the alignment edge by a spring, so that the transport roller has the task of adjusting the angle associated with the alignment edge. When the sheet is aligned with the alignment edge, the pivot of the drive wheel is swiveled backwards against the spring force, so that the transport rollers exert only a force in the transport direction on the sheet.

[0004] According to the disadvantages of the prior art, the sliding or slipping of the drive element on the seat surface occurs upon reaching the stop, despite the reversing turning of the drive roller or drive wheel of the alignment device. This is particularly disadvantageous for sensitive sheet surfaces or thin sheets. This is because the friction between the seat and the drive element can cause damage.

[0005]

The object of the invention is therefore to provide a simple and inexpensive construction of an apparatus for aligning print carriers in a printing machine of the type mentioned at the outset. And provide something that works reliably.

[0006]

According to the apparatus of the present invention, the alignment device includes a drum, and is mounted on the outer peripheral surface of the drum so as to be pivotally supported. At least one aligning wheel is provided, the aligning wheel being angularly oriented such that the angular line of the aligning wheel forms an acute angle with respect to the stop edge by adjusting force.

[0007]

The design according to the invention has the advantage over the known device that the alignment process is not impeded by frictional forces between the contact edge of the print carrier and the stop edge. This is because the print carrier and the stopper edge move at approximately the same speed.

It is particularly advantageous that the alignment process is not hindered by frictional forces between the print carrier and the sheet support surface of the drum surface. This is because the print carrier and the drum move at the same speed.

[0009] More preferably, the print carrier is curved perpendicular to the transport direction and parallel to the adjusting force by contacting the drum surface during alignment, whereby the print carrier has enhanced shape stability. Is given. Thus, even very thin print carriers can be transported and aligned reliably and safely.

[0010] According to another embodiment, an alignment wheel is fitted into the holding body and is supported so as to be rotatable about a traveling axis positioned parallel to the drum axis. The holder itself is pivotally supported on a support fixed to the casing around a pivot pin, and the pivot pin is arranged perpendicular to the surface of the drum and in front of the alignment wheel in the transport direction. Have been.

In order to produce an adjusting force, a cylindrical spring is provided on the pivot pin, which at the same time produces a pressing force of the alignment wheel against the outer peripheral surface of the drum.

According to an advantageous embodiment, at least one further aligning wheel is arranged in the transport direction, the distance between the two aligning wheels being measured along the outer circumference of the drum and being printed. It is smaller than the length of the carrier.

When transporting wide print carriers, advantageously
In each case two alignment wheels are arranged adjacent to one another at a distance from one another in the transverse direction to the transport direction.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the illustrated embodiments.

FIG. 1 shows that during transport from a storage container to a printing station or from a printing station to a subsequent processing device, for example a punching, binding or binding device.
A device for aligning a print carrier 12 (Drucktraeger), for example a sheet, a film sheet, etc., is shown.

A cylindrical drum 11 is mounted on a casing wall 10.
Are supported so as to be rotatable around a rotation shaft 13 arranged in a direction transverse to the transport direction of the print carrier 12. The drum 11 is provided on the side of the housing wall with an upright circumferentially extending stop edge 1 for the lateral edge of the print carrier 12.
4 (Anschlagrand). One aligning wheel or two aligning wheels 16 adjacent to each other and spaced apart from one another are arranged downstream of the loading roller 15, and the aligning wheels 16 are supported by the support 17 on the casing wall 10. Fixed.

An aligning wheel 16 is supported on a holder 18 so as to be rotatable about a running shaft 19 positioned parallel to the rotating shaft 13 of the drum 11. Holder 1
8 comprises a pivot pin 20 oriented substantially perpendicularly to the surface of the drum 11;
It is rotatably held at a bearing eye 21 (Lagerauge). As viewed in the transport direction, the alignment wheel 16 is located behind the pivot pin. Around the pivot pin 20 is located a cylindrical spring 22, which applies an elastic preload to the alignment wheel 16 towards the stopper edge 14. The pivoting movement of the alignment wheel 16 having the angle α is limited by a projection 23 formed on the pivot pin 20, and the projection 23 is provided on a support surface 17 provided on the support 17 at the end position of the alignment wheel 16. Contact 24. In this end position, the line of action of the alignment wheel 16 is oriented at an acute angle towards the stop edge 14. The print carrier 12 entering in this state is moved by the aligning wheel 16 so as to abut the stopper edge 14.

In this embodiment, a pair of aligning wheels 25 arranged on the outlet side are arranged after a pair of aligning wheels 16 arranged on the inlet side. In this case, the distance between the alignment wheel 16 and the alignment wheel 25 is smaller than the length of the print carrier 12 as measured along the outer peripheral surface of the drum 11 in the transport direction. In this way, the print carrier is already gripped by the alignment wheel 25 before leaving the alignment wheel 16. This ensures that the print carrier 12 is aligned at the stopper edge 14. The alignment of the print carrier is also ensured by a pair of alignment wheels already arranged on the inlet side.

In order to guide the print carrier 12, a smooth guide 26 is provided on the upper side of the drum 11 on the casing side. The guide 26 is formed in a segment shape and has a rotating shaft of the drum 11. 13 and at a small distance from the drum 11. A further derivative 27 consisting of two segment dishes lying parallel to one another is arranged behind the alignment wheel 25. In the transport direction, there is no movement between the outer circumferential surface of the drum 11 and the print carrier 12, which can lead to an undesirable electrostatic charge of the print carrier, and thus no friction.

The alignment of the print carrier is performed as follows. : The print carrier 12 supplied from the carry-in roller 15 is gripped by the aligning wheel 16, and a, b, and c in FIG.
The alignment motion indicated by is performed. As long as the trailing end of the print carrier 12 is still running between the carry-in rollers 15, the alignment wheel 16 is positioned parallel to the transport direction or to the stop edge 14 (see FIG. 4a). Print carrier 12
Only when the subsequent end of
Adjusting force F _{Ste ll} acts, axially between the print carrier 12 by aligning wheel 16, which is adjusted obliquely at an angle β based on the cylindrical spring 22, and the outer peripheral surface and the printing carrier 12 of the drum 11 It is moved so as to overcome friction (no friction occurs in the transport direction) and abut against the stopper edge 14 (see FIG. 4B). If the print carrier 12 contacts the stop edge over its entire edge length, i.e. is aligned, the alignment wheel is again adjusted parallel to the transport direction against the force of the cylindrical spring 22 ( 4c).

When the distance in the transport direction is long, the alignment process of the first alignment wheel 16 is assisted by another support wheel 25. If the first alignment wheel 16 already provides an alignment of the print carrier, another alignment wheel 25 takes on the stability of the print carrier 12 in merely an aligned position.

After the alignment of the print carrier has taken place, one or more aligning wheels 16, 25 are provided with an adjusting force F.
It turns in a state parallel to the transport direction against _Stell .

After the print carrier 12 has left another alignment wheel 25, the print carrier 12 is supplied by a discharge roller 28 to another processing device.

[Brief description of the drawings]

FIG. 1 is a three-dimensional view of the apparatus of the present invention.

FIG. 2 is a plan view schematically showing an alignment wheel of the apparatus shown in FIG. 1;

FIG. 3 is an enlarged three-dimensional view showing two aligning wheels of the present invention shown in FIG. 1 which are arranged adjacent to each other.

FIGS. 4a, 4b and 4c are schematic diagrams showing the functional form of the device of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Casing wall part, 11 drum, 12 print carrier, 13 rotating shaft, 14 stopper edge part, 15
Loading roller, 16 Alignment wheel, 17 Support, 18 Holder, 19 Travel axis, 20 Rotating pin, 21 Bearing eye, 22 Cylindrical spring, 23
Projections, 24 stopper surfaces, 25 alignment wheels,
26, 27 derivative, 28 discharge roller

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Helmut Domes Germany Stuttgart Nauheimer Strasse 41 (72) Inventor Andreas Schweitzer Germany Bad Ditzen Bach Gossbach Mühleisenschüttraße 6 (72) Inventor Reinhard Wertz Germany Leonberg-Jilbaberg Drosselweg 58 F term (reference) 3F101 FB11 FC07 FE17 LA06 LB01 3F102 AA13 AB01 BA01 BB04 EA02 EA06 FA03

Claims (10)

[Claims] 1. An apparatus for aligning a print carrier, such as a sheet or a film sheet, in a transport path of a printing machine, said aligning device comprising a drum (11), and an outer peripheral surface of said drum (11). at least one alignment wheel is pivotably mounted to No設(16; 25) is provided, said alignment wheel; stopper by an angle line accommodation power (16 25) _{(F S tell)} Edge (1
4) A device for aligning a print carrier in a printing technology machine, characterized in that it is arranged to be oriented at an acute angle to 4). 2. The aligning wheel (16; 25) is fitted in a holder (18), and the aligning wheel (16; 25) is positioned parallel to the drum rotation axis (13). 2. The device according to claim 1, wherein the device is mounted rotatably about a travel axis. 3. The holding member (18) is arranged so as to be pivotable about a rotation pin (20) provided on a support (17) fixed to a casing, and the rotation pin (20) is provided.
3. The device according to claim 2, wherein the device is arranged perpendicular to the surface of the drum (11) and in front of the alignment wheel (16; 25) in the transport direction. 4. The rotary pin (20) is provided with a cylindrical spring (22) for generating the adjusting force (F _Stall ), and the cylindrical spring (22) is simultaneously provided with the drum (11). ) With respect to the outer peripheral surface of the alignment wheel (1).
6. The device according to claim 1, which forms a pressing force of 6; 25). 5. A projection (23) is provided on said pivot pin (20) for limiting the pivoting movement of said alignment wheel (16; 25), said projection (23) being provided on said support ( 5. The device according to claim 1, wherein the device is adapted to cooperate with a stop surface formed at 17). 6. In the transport direction, at least one further aligning wheel (25) is arranged, the distance between both said aligning wheels (16; 25) being said drum (11).
2. The device according to claim 1, wherein the length is smaller than the length of the print carrier, measured along the outer peripheral surface of the print carrier. 7. In the transport direction, one or more aligning wheels (16) are arranged in the area of a loading roller (15) located in front of the drum (11), and another one or more aligning wheels (16) are arranged. 7. The device according to claim 1, wherein the alignment wheel is arranged in the area of a discharge roller located behind the drum. 8.
Item. 8. The method as claimed in claim 1, wherein each of the aligning wheels is followed by a derivative for a print carrier. apparatus. 9. The derivative (26) downstream of the alignment wheel (16) arranged on the inlet side is formed of a flat and curved dish-shaped member, the dish-shaped member being a drum shaft. 9. Apparatus according to claim 8, wherein the apparatus is arranged concentrically with (13) and at a slight distance from the outer peripheral surface of the drum. 10. The arrangement according to claim 1, wherein the two alignment wheels are arranged adjacent to one another in a transverse direction to the transport direction.
The device according to any one of the preceding claims.