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Variable diameter cylinder

A cylindrical, variable technology, used in printing, rotary presses, printing presses, etc., that can solve the problems of complex structure, undisclosed, braking, etc. of the fluid pressure system

Inactive Publication Date: 2002-12-11
HEIDELBERGER DRUCKMASCHINEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its fluid pressure system is complex in structure and does not disclose means for axial movement
[0006] In printing presses where two cylinders in frictional contact with each other are driven by separate motors, there may be a problem where one motor is operating at full torque while the other motor is operating at less than ideal torque, or even will brake

Method used

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  • Variable diameter cylinder
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Examples

Experimental program
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Embodiment Construction

[0046] Fig. 1 has shown a cylinder 10 with width w, and this cylinder has first wedge-shaped member 12a, 12b, 12c, 12d, 12e, 12f and 12g, and second wedge-shaped member 22a, 22b, 22c, 22d, 22e, 22f and 22g. The first wedges 12a, 12b, 12c, 12d, 12e, 12f and 12g are all connected at their inner surfaces to a first common actuator 112 having seven arms, the seven An arm secures each first wedge axially, but allows radial variation. The second wedges 22 a , 22 b , 22 c , 22 d , 22 e , 22 f and 22 g are likewise fixed to a second common actuator 122 . The first and second wedges are connected to each other, for example by a dovetail joint 30, so as to be able to slide relative to each other. One possible embodiment of the actuator 112 is schematically detailed in FIG. 4 . The arm 212 of the actuator 112 is firmly connected to the first wedge. Arm 212 is also rigidly connected to a plate 312 which is rigidly connected to a shaft 412 . The shaft 412 has an external thread 413 at...

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Abstract

The cylindrical body (10) has a number of first conical elements (12a-g) that interact with and are axially movable with respect to a number of second conical elements (22a-g). The diameter of the body is varied depending on the axial movement between the first and second conical elements, which define the outer surface of the cylindrical body. Independent claims are also included for the following: a method of varying the effective diameter of a cylindrical body and a printing machine, especially a roller rotation printer.

Description

technical field [0001] The invention relates to a cylinder with variable diameter. Background technique [0002] Various cylinders such as ink rollers, plate cylinders, blanket cylinders, and web guide cylinders are used in printing presses. [0003] For example, German Patent No. 196 49 324 C2 discloses a rotary body of variable circumference for a rotary printing machine, which has a shaft (part 4) on which is supported a variable Perimeter roller support (part 11). Around the support there is a cylindrical helical spring (part 12 ) connected on one side directly or indirectly to the shaft. On the other side of the helical spring is means for relative axial movement of the coils of the spring in order to selectively vary the diameter of the helical spring. The cylinders can be used as blanket cylinders, as reversing cylinders for webs with appropriate diameters for different paper thicknesses, or as flat drive belt rolls to vary the rotational speed of the drive. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41F13/08B41F13/10B65H18/04B65H20/02B65H23/025B65H29/20F16C13/00
CPCB65H20/02B65H29/20B65H2404/411B65H2511/22B65H2515/32B65H2220/01B65H2220/02
Inventor 斯蒂芬·富兰克林罗伯特·理查德·穆瑞
Owner HEIDELBERGER DRUCKMASCHINEN AG
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