DE102008002021A1 - Clamping cone for rolling changer, has trunnion rejuvenating to its free end, where trunnion has hollow chamber concentric to its bearing side, extending in axial direction - Google Patents

Abstract

The clamping cone has a trunnion (01) rejuvenating to its free end, where the trunnion has a hollow chamber (04) concentric to its bearing side, extending in axial direction and open from bearing side ends. The slots (06) are arranged at the lateral area of the trunnion in the area of the hollow chamber. The slots run around the periphery in axially distributed manner.

Description

The The invention relates to a clamping cone for a roll changer according to the preamble of claim 1.

chucks for receiving bobbins are particularly in the Printing industry known in large numbers. At the careless Reel seat, the clamping cones are motorized in the sleeves introduced the material rolls. This will be jaws or radial driver elements pressed into the sleeve material, whereby a positive and non-positive connection between the clamping cone and the winding tube is created, which is a optimum torque transmission from the drive to the material roll allowed.

From the EP 17 08 942 B1 a reel changer of a web-fed rotary printing press is known, which has a drive with at least one electric motor. The electric motor drives a roll of material held in a reel on a recording material roll, which is wound on a web. The rotor of the electric motor designed as a synchronous motor has poles of permanent magnets. A drive shaft of the synchronous motor can be brought directly into the material roll in a torque-transmitting manner. For this purpose, in particular driving elements on the drive shaft, which form a torque and frictionally transmitted to the roll of material.

From practice also axially acting driver elements are known which engage the end face of the winding tube. For example, in the DE 26 12 375 A1 Cutting described which are arranged on the outer edge flange of the support sleeve on the roller side. These blades provide a backup that, for example, when changing the direction of the torque does not lead to a sliding between the winding tube and the support sleeve.

For Different types and widths of material rolls will be different Winding sleeves used. It has the sleeve material also different hardnesses and partly with different ones Inner diameters. When using harder sleeve types It may happen that with the available Aufachskraft is not possible, the cone and the frontal Completely press driver into the winding tube. This can be a complete Aufachsvorgang and no longer required torque transmission be ensured.

Around it is sometimes possible to achieve a high utilization of the machines required, material rolls of different designs in one or several consecutive productions to process. This is especially true in smaller web-processing Plants or print shops. So far, different must Reel changers are provided in a plant to different types to be able to process winding cores, or it is a costly conversion to reel changer required which causes high downtimes and thus the production costs elevated. For example, winding cores are to be processed, which have different hardnesses.

Of the Invention is based on the object, an improved clamping cone to create a reel changer.

The The object is achieved by the features of claim 1.

The particular advantages of the invention are that when Aufachsen a roll of material less effort in the axial direction is required and still an optimal Torque transmission is ensured. Possible Dimensional tolerances and tolerances in the strength of the cores are extended by the construction many times over.

One Clamping cone comprises a, tapering to its free end Trunnion with a cylindrical passage to the its bearing-side end extending in the axial direction Has cavity. On the peripheral surface of the trunnion are in the region of the cavity in the axial direction at least four extending slots arranged in the radial direction reach into the cavity.

On the lateral surface of the trunnion are preferably part-cylindrical or part-cone-shaped recesses, wherein the cylinder or cone axes in each case parallel to the longitudinal axis of the trunnion. Through these recesses are through the remaining material areas radially acting driver elements formed on the conical lateral surface of the trunnion.

Of the Cavity and the slots are at the bearing end of the trunnion open. Preferably, the slots and the cavity are made by cutting Processes such as turning made. In a preferred Embodiment of the invention, the slots are centered arranged in the recesses and terminate in a circular opening.

The tongues formed between the slots act due to the elasticity of the material like springs, in particular like leaf springs and, given a suitable choice of dimensions when retracting of the clamping cone in the winding tube spring after. Preferably, the tongues have a substantially trapezoidal cross-section.

By the number of slots and thus the tongues formed between them, Can the trunnion optimally to the expected conditions such as Adjusted clamping force and torque transmission.

One Embodiment of the invention is in the drawings and will be described in more detail below.

It demonstrate:

1 a preferred embodiment of a trunnion in a spatial view;

2 according to the trunnion 1 in three different views a), b) and c);

3 a longitudinal sectional view of a preferred embodiment of a clamping cone;

4 a longitudinal sectional view of the clamping cone according to 3 with an eye-catching winding tube.

In the 1 and 2 is a trunnion 01 a clamping cone shown in different views. While 1 a spatial view shows are in 2 , a side view 2 B ), a front view 2c ) and a sectional view 2a ) according to section line AA in 2c to see).

The trunnion 01 has a conical shape, which tapers to its free end. Furthermore, the trunnion 01 in a conventional manner a concentric cylindrical passage 02 on, through which a Zentrierdeckel 12 ( 3 and 4 ) can be mounted on the storage side.

On the lateral surface of the trunnion 01 are cylindrical recesses 03 worked out to form radially acting driver elements, which in the Aufachsen in the radial direction in the winding tube 11 ( 3 and 4 ) are pressed.

In this case, the trunnion 01 a concentric cavity 04 on, which extends from the bearing end in the axial direction of the trunnion 01 extends. In the area of the cavity 04 are on the outer surface of the trunnion 01 axially extending slots 06 incorporated, extending into the cavity 04 extend. The slots 06 are preferably each centered in the recesses 03 arranged. In the described preferred embodiment, the slots terminate 06 in circular openings 07 ,

So be between the slots 06 tongues 08 formed as radially acting driver elements which act when retracting the clamping cone in a winding tube respectively as a spring, in particular leaf spring and under the pressure of the winding tube 11 at least partially recede and partially pressed into the sleeve material. The tongues 08 are preferably substantially trapezoidal in cross-section. This cross-sectional shape is also due to the shape of the adjacent recesses 03 ,

From the free end of the trunnion 01 extend in the axial direction through holes 09 for bearing-side attachment of the trunnion 01 ,

3 shows a clamping cone for use on a roll changer, in 4 is the clamping cone with an aufgeachsten winding tube 11 shown.

The clamping cone comprises next to the trunnion 01 a centering lid 12 and a sleeve abutment surface 13 , which are transverse to the cone longitudinal axis 14 spans. From the sleeve bearing surface 13 can driver elements 16 protrude. The driver elements 16 penetrate the Aufachsvorgang in the front side of the winding tube 11 and serve to improve the torque transmission.

The driver element 16 is in an axially extending bore 17 in a sleeve 18 mounted, which axially displaceably guided on Spannkonusgrundkörper 19 is attached. In the described embodiment, the sleeve 18 axially displaceable. But it is also possible, the driver elements 16 firmly on the sleeve contact surface 13 provide, or individual driver elements 16 in the sleeve bearing surface 13 For example, to make submersible against a spring force to achieve better adaptation to different types of sleeves.

When Aufachsen pushes the sleeve contact surface 13 against the winding tube 11 ( 4 ). This is the sleeve 18 against the force of a spring 21 moved in the axial direction. The winding tube 11 is thus on the trunnion 01 deferred, with the tongues 08 Fall back slightly in the radial direction. The driver elements 16 protrude from the sleeve contact surface 13 out and into the front of the winding tube 11 pressed.

The clamping cone itself is rotatably supported in a known manner in a roll changer frame and by a motor shaft 22 drivable. The clamping cone body 19 can of course also be integrally formed with the motor shaft.

01

supporting journal

02

execution

03

recess

04

cavity

05

06

slot

07

opening

08

tongue

09

drilling

10

11

mandrel

12

centering

13

Sleeve contact surface

14

cone axis

15

16

dogging

17

drilling

18

shell

19

Spannkonus body

20

21

feather

22

motor shaft

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• EP 1708942 B1 [0003]
• - DE 2612375 A1 [0004]

Claims (9)

Clamping cone for a reel changer with a trunnion tapering towards its free end ( 01 ), characterized in that the trunnion ( 01 ) at its bearing-side end a concentric, extending in the axial direction, the bearing-side end open cavity ( 04 ), wherein on the lateral surface of the trunnion ( 01 ) in the region of the cavity ( 04 ) distributed around the circumference axially extending slots ( 06 ) are arranged in the radial direction into the cavity ( 04 ) pass. Clamping cone according to claim 1, characterized in that the lateral surface of the trunnion ( 01 ) distributed on the circumference several teilzylindrische or part cone-shaped recesses ( 03 ), wherein the axes of the cylinders or cones each parallel to the longitudinal axis of the trunnion ( 01 ). Clamping cone according to claim 2, characterized in that the axially extending slots ( 06 ) in the middle of the recesses ( 03 ). Clamping cone according to one of claims 1 to 3, characterized in that between the slots ( 06 ) Tongues ( 08 ) are formed with a substantially trapezoidal cross-section. Clamping cone according to one of claims 1 to 4, characterized in that at least some of the slots ( 06 ) into one slot ( 06 ) terminating opening ( 07 ). Clamping cone according to claim 5, characterized in that the openings ( 07 ) as radially in the trunnion ( 01 ) extending bores are formed. Clamping cone according to one of claims 1 to 6, characterized in that it has a concentric cylindrical passage ( 02 ) having. Clamping cone according to one of claims 1 to 7, characterized in that it further comprises a sleeve bearing surface ( 13 ) with a number of axial entrainment elements ( 16 ), wherein the axial entrainment elements ( 16 ) when Aufachsen a roll of material in the axial direction for torque transmission form-fitting and non-positively end face in a winding tube ( 11 ) intervene. Clamping cone according to claim 8, characterized in that the sleeve bearing surface ( 13 ) on a sleeve ( 18 ) is arranged, which axially displaceable in a clamping cone body ( 19 ), and which axial bores ( 17 ) for guiding driver elements ( 16 ) having.