JPH10309792A - Apparatus for detachably coupling double gear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a member for clamping and a body journal to be scarcely relatively rotated by providing a coupling member spring-elastically operating axially without play in a rotating direction between a clamping ring and a member tightly coupled to a sheet guide cylinder. SOLUTION: In a driving unit of the double gear, a tie rod 9 penetrating a main gear 4, gear flange 3 and clamping ring 7 is spring-elastically supported to the ring 7. The rod 9 is loaded by a lap leaf spring 10. The rod 9 is previously regulated to clamp a gear ring 5 at the gear 4. The rod 9 is released from a driving force of a circumferential direction by coupling to a coupling plate 16 without play. Since the plate 16 is relatively thin, it allows axial movement of the ring 7 by an elastic deformation. At the time of eliminating clamping of a separating coupler 11, relative positions among the ring 7, flange 3 and a body journal 1 are continuously the same.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for detachably connecting a double gear, which comprises a clamping ring and a spring-elastically supported member acting on the clamping ring. The gear ring is releasably fastened to the main gear, which is rigidly connected to the sheet-guiding cylinder of the invention, by means of a separate coupling, which is removable by reducing or eliminating the spring force of the resiliently supported member. Regarding some form.

[0002]

BACKGROUND OF THE INVENTION German Patent No. 41 41 817
From the specification, devices for connecting a gear ring with a main gear are known. In this case, the gear ring is fixed to the main gear by frictional engagement by means of a clamping ring and a plurality of resiliently supported bolts. In order to eliminate the tightening required for the relative movement between the ring and the main gear, a preload is applied to the leaf spring for loading the tightening ring, so that the gear ring can rotate freely.
The transmission parts connected to the gear ring or the main gear can then be rotated relative to one another. This is necessary, for example, in sheet-fed rotary presses in order to move the printing units relative to one another in the circumferential direction according to the sheet size.

[0003] One application is to switch a printing press to reverse a sheet for so-called duplex printing. The problem with this device is that the clamping is made by a clamping ring and a gear ring. In this case, there are a plurality of friction surfaces, and their friction characteristics may be variously different. Therefore, various situations may occur when the gears are released. In this case, the presence of the defined play between the holding bolt and the clamping ring additionally plays a special role. This play can lead to a shift between the gear ring and the main gear in special situations, such as overload, so that the tightening is not kept in place. Further, the possibility of this displacement may cause a failure. The device for connecting the double gears must not have a tendency to break or move when driven under high load.

[0004]

SUMMARY OF THE INVENTION The object of the present invention is to provide a device of the type mentioned at the beginning which is easily resolvable and at the same time provides a non-rotatable connection between the member producing the clamping and the cylinder journal. It is.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problem, according to the present invention, there is provided a play-free rotation direction between the clamping ring and a member firmly connected to the sheet guide cylinder. In addition, a coupling member acting in a spring elastic manner is provided in the axial direction.

[0006]

In this case, it is advantageous that a very play-free connection between the clamping ring and the cylinder journal can be formed with very simple components in the circumferential direction. Furthermore, it is stated in the claims below that this connection can also be used to provide spring forces in different directions.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings.

The torso journal 1 supported on the machine wall 2
Above, the gear flange 3 of the main gear 4 is fixed. A gear ring 5 is arranged coaxially with the main gear 4.
The gear ring 5 is seated on the collar 6 of the gear flange 3. Again, a clamping ring 7 is arranged coaxially with the main gear. The fastening ring 7 is an end face 8 of the gear ring 5.
On the top.

The drive unit of the double gear is formed by a tie rod 9 passing through the main gear 4, the gear flange 3 and the tightening ring 7 being elastically supported with respect to the tightening ring 7. For this purpose, the tie rods 9 are loaded by leaf springs 10.
By adjusting the tie rod 9 in advance, a preload for tightening the gear ring 5 to the main gear 4 is defined.

In order to disengage the connection which is tightened in the standard state, a separate coupling 11 is provided inside the main gear 4 and towards the machine wall 2. The separating coupler 11 is arranged in a ring around the drum journal 1 and is held on the machine wall 2. The separation coupler 11 has a plurality of parts so that it can extend in the axial direction. The axial elongation movement serves to disengage the double gear. For this purpose, the separating coupler 11 comprises an engaging ring surface 1 which is arranged axially parallel.
Two. This engagement ring surface 12 cooperates with an opposing ring 13 provided on the main gear 4.

Further, the separating coupler 11 includes a separating coupler 1.
A thrust bearing 14 is provided extending between the end face 1 and the compression ring 15. The compression ring 15 forms a support for the leaf spring 10 and is connected to the tie rod 9. For example, by rotating the members of the separation coupler 11 relatively to each other, the axial extension of the separation coupler 11 is enlarged, so that the thrust bearing 14 acts on the compression ring 15 and at this time, the leaf spring 10 Is compressed.
As a result, the tie rod 9 is slightly released, the action of the tie rod 9 on the tie rod 7 disappears, and the tightening of the gear ring 5 by the tightening ring 7 is canceled.

In special cases, a relative movement may occur between the gear ring 5, the clamping ring 7 and the main gear 4. Due to the relatively uneven friction situation, it is not ensured, for example, that only the gear ring 5 slips inside the clamping pair between the clamping ring 7 and the main gear 4.
Rather, the clamping ring 7 can also be entrained. Since there is play here between the clamping ring 7 and the tie rod 9 or between the gear flange 3 and the tie rod 9, considerable relative movement of the clamping ring 7 can occur, which can lead to a failure of the coupling. There is.

This danger is that the connecting plate 16 is
And can be eliminated by being provided in play-free connection with the gear flange 3 or the cylinder journal 1. The connecting plate 16 connects the clamping ring 7 and the gear flange 3 and the cylinder journal 1 to one another. For this purpose, the connecting plate 16 is connected to the gear flange 3 via a support point 17. On the other hand, the tie rod 9 is disengaged from the circumferential driving force by the substantially playless connection of the connecting plate 16.

Since the connecting plate 16 is relatively thin, it allows axial movement of the clamping ring 7 by elastic deformation. The connection plate 16 always ensures that the relative position between the clamping ring 7, the gear flange 3 and the cylinder journal 1 remains the same when the clamping by the separating coupler 11 is released. Here, an inconsistent and different sliding of the gear ring 5 in different states due to the uncontrolled movement of the clamping ring 7 is no longer possible.

The connecting plate 16 may be used to assist or remove the tightening. In this case, it is possible, for example, to form the connecting plate 16 in the form of a disc spring to assist the clamping force of the clamping ring 7 on the gear 5 or to apply a dissociating force to the clamping ring 7 against the clamping force. is there. The slight disadvantage that the tightening force of the tie rod 9 is slightly reduced at this time is compensated for by a constant dissociation force during connection and disconnection. By doing so, the operation is more reliable and more accurate.

In a variant to this, the support point 17 at its height is such that the coupling plate 16 is stationary and pulls the clamping ring 7 towards the gear ring 5 or pushes the clamping ring 7 away from the gear ring 5. May be formed. As a result, a preload of the clamping ring 7 will likewise be achieved in the tightening direction or in the undoing direction as well.

What is essential in the present invention is a circumferentially play-free connection between the clamping ring 7 and the cylinder journal 1. As a result, when the driving means is overloaded, for example, when a machine fails,
In some cases, the gear ring 5 slips only slightly between its friction surfaces, without causing a displacement of the clamping ring 7 and thus a failure of the coupling. Furthermore, when switching the printing press to an operating mode with sheet reversal, play in the coupling arrangement can no longer affect the accuracy of the sizing.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a device according to the invention, a so-called disconnect coupler.

[Explanation of symbols]

1 trunk journal, 3 gear flange, 4 main gear, 5 gear ring, 7 tightening ring, 16 connecting plate

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Helmut Schilt Germany Steinbach / Taunus im Wingelsgrund 148 (72) Inventor Jürgen Schneider Germany 71 Egelsbacher Strasse 1 (72) Inventor Toni Ehrhardt Germany Breuberg am Ziegelgraben 11 (72) Inventor Bernd Lintner Germany Huisenstamm Hoebergstrasse 51 (72) Inventor Edgar Dersam Germany Oberzhausen Ostentstrasse 86

Claims (7)

[Claims] 1. A device for detachably connecting a double gear, comprising a clamping ring and a resiliently supported member acting on the clamping ring, the sheet guide cylinder of a sheet-fed printing press. Releasably fastening a gear ring to a main gear that is rigidly connected to the main gear, wherein the fastening is removable by a separate coupler by reducing or eliminating the spring force of a resiliently supported member; Between the clamping ring (7) and a member which is rigidly connected to the sheet-guiding cylinder, a connecting member is provided which has no play in the rotational direction and which acts resiliently in the axial direction. A device for detachably connecting a double gear. 2. A gear flange (3), provided with a connecting plate (16), which seats on a torso journal (1) and holds said main gear (4). ) And said clamping ring (7) is firmly connected.
The described device. 3. The connecting plate (16) is rigidly connected to a clamping ring (7) and to a member fixed to the torso journal (1), but the connecting plate (16).
3. The device according to claim 2, wherein the shaft is elastic in the axial direction and rigid in the circumferential direction. 4. With the gear ring (5) connected to the main gear (4), the connecting plate (16) is connected to the gear ring (5).
4. The device according to claim 1, wherein the device has the effect of increasing the clamping force of the clamping ring (7) with respect to. 5. The connecting plate (16) with the gear ring (5) connected to the main gear (4).
4. The device according to claim 1, further comprising a preload that reduces a clamping force of the clamping ring with respect to. 5. 6. The device according to claim 4, wherein the connecting plate has a disc spring molding in a direction perpendicular to the plane extension. 7. The connecting plate (16) is flat and the height position of the connection with the sheet guide cylinder is determined by the direction of the clamping force or the direction of the clamping force of the clamping plate (7). The device according to claim 4, wherein the device is configured to apply a preload.