US3759458A

US3759458A - Winding machine

Info

Publication number: US3759458A
Application number: US00240049A
Authority: US
Inventors: H Thomas
Original assignee: Maschinenfabrik Goebel GmbH
Current assignee: Maschinenfabrik Goebel GmbH
Priority date: 1972-03-31
Filing date: 1972-03-31
Publication date: 1973-09-18
Anticipated expiration: 1990-09-18

Abstract

A winding machine for the winding-up of strip band material about a roll, including a grooved shaft disposed perpendicularly with respect to the roll winding axle, and a drive transmitting gear member shiftable along the groove in accordance with the winding axis shift during change in roll diameter, the course of said groove being governed by the angle of the frictional force between the grooved shaft and the gear member occurring during the winding-up of the roll.

Description

United States Patent 1191 1111 3,759,458 Thomas Sept. 18, 1973 WINDING MACHINE 3,297,273 1/1967 Inventor: Hermann Thomas, Darmstadt,

Germany Assignee: Masehinenfabrik GOEBEL G.m.b.1-1., Darmstadt, Germany Filed: Mar. 31, 1972 Appl. No.: 240,049

US. Cl. 242/67.1 R, 242/18 R Int. Cl B65h 17/02 Field of Search 242/75.5, 67.5, 66,

References Cited UNITED STATES PATENTS 11 /1954 Cherigie 242/75.5 x

lppolito 242/75.5

Primary Examiner-George F. Mautz Assistant Examiner-Edward J. McCarthy Attorney-Watson, Cole, Grindle & Watson [57] ABSTRACT A winding machine for the winding-up of strip band material about a roll, including a grooved shaft disposed perpendicularly with respect to the roll winding axle, and a drive transmitting gear member shiftable along the groove in accordance with the winding axis shift during change in roll diameter, the course of said groove being governed by the angle of the frictional force between the grooved shaft and the gear member occurring during the winding up of the roll.

1 Claim, 1 Drawing Figure 1 WINDING MACHINE The invention relates to a winding machine for winding strip material bands. Such machines are very often arranged in such a way that the roll to be wound fits against one or several supporting rollers rotatably mounted on the frame of the machine. Whenever the winding shaft is rotatably driven, the drive element of the winding shaft must, of course, change its position in relation to the change of thediameter of the roll to be wound.

l-leretofore, the torque acting through the winding shaft of the roll of such prior art machines was transmitted from the drive of the machine to the winding shaft by means of a shaft disposed perpendicular to the axle and located on a front side of the roll to be wound and through a bevel gear engaging in one or more grooves extending parallel to the axis of the shaft. With such an arrangement, the torque, transmitted through the perpendicularly disposed shaft, changes during the winding process whenever the strip material is wound up at a uniform tension.

During a shifting of the driving gear disposed about the perpendicularly disposed shaft, frictional forces occurring at said shaft, and which depend on the torque transmitted in each instance, can reach values which make the shifting movement of the winding shaft during the change of roll diameter much more difficult and which as a result have a disadvantageous effect on the quality of the winding, especially with an increasing value of the torque transmitted by the shaft. For example, the hardness of the roll across the diameter of the roll may be variable or may be different from one front side to the other. i

It is the object of this invention to avoid the aforementioned disadvantages and to provide a simple yet very effective improvement, characterized in that the angle formed by the course of the groove or grooves provided on the perpendicularly disposed shaft periphery and the generatrix of the periphery of the shaft being governed by the frictional angle between the perpendicular shaft and the driving gear wheel. With such an arrangement of the groove or grooves, the frictional force developing during the shifting of the driving gear wheel will be at least approximately compensated by an opposed component of the peripheral force within the groove, corresponding to the torquetransmitted by the shaft, so that it will not affect the shifting movementof the winding shaft.

The invention will be described in detail with reference to the accompanying drawing which schematicallyillustrates the invention.

In the drawing, a supporting roller 2 is shown rotatably mounted on frame 1 of the winding machine. Ad-

ditional rollers 2 may, of course, be mounted in a similar manner so that a roll 3 to be wound may be supported by such rollers. Winding shaft 4 of roll 3 is mounted on frame 1 within a cradle 5 which is capable of being shifted in corresponding guides along a path perpendicular to shaft 4. A bevel gear 6 is fixedly secured to thefree end of shaft 4 for rotation therewith. Cradle 5 carries an arm 7 on which another bevel gear 8 is rotatably mounted in a manner whereby it cannot move away from arm 7. A shaft 10 provided with a groove 9 extends through gear 8 and is rotated by I wound, at least one support roller for supporting said' means of a drive shaft 11 and bevel gears drive l2, 13 from a power source (not shown). Bevel gear 8, along with arm 7, is capable of being axially shifted along shaft 10 by means of a feather key 14 which fits within groove 9, and a complementary groove (not shown) in gear 8. Upon rotation of shaft 10, bevel gear 8 rotates bevel gear 6 which in turn rotates winding shaft 4 and roll 3. By reason of groove 9, gear 8 can shift along shaft 10 in accordance with the changing diameter of roll 3 as it is being wound.

Because the angle formed by the course of the groove 9 and the generatrix of the periphery of the shaft depends on the angle of friction between shaft 10 and bevel gear 8, the peripheral force corresponding to the transmitted torque between shafts 10 and 4 affects the feather key 14 in such a way that one of its components opposes the frictional force acting between the shaft 10 and the feather key 14 connected with the bevel gear 8. Both forces are of approximately the same value, and their ration is not dependent on the torque transmitted by shaft 10. I Accordingly, with such a development of groove 9, the shifting of gear 8 travelling with winding shaft 4 is made easier without adversely affecting the quality of the winding of the tape on roll 3.

Naturally, it is within the scope of the invention to wind several rolls 3 (not shown), disposed on the same windingshaft 4, instead of only one. The aforementioned difficulties will also occur with the use of several rolls 3 as discussed with reference: to the prior art machines. The winding shaft4 for the rolls 3 is driven just as effectively, however, as one roll.

Obviously, many modification and variation of the present invention are possible in the light of the above teachings. For example, roll 3 may be rotated by additional rollers 2 disposed either above roll 3 or to-its side during the winding of only so that, during an incrase in diameter of wound roll 3,

the winding shaft is moved downwardly or transversely during the winding process. With such an arrangement, it is essential merely that the torque acting through the windingshaft of either transmitted roll be transmitted by means of a shaft disposed perpendicularly in relation to the axle of roll 3. 7 I

It is therefore to be understood that within the scope of the appended claims, the invention may be practiced otherwise than as specifically described.

What is claimed is: r I I 1. A winding machine for the winding-up of strip material, comprising a roll ontowhich the material is tobe roll at its periphery, a rotatable shaft disposed perpendicularly with respect to the axle of said roll, gear meansoperatively inteconnecting said shaft and said roll to thereby transmit the rotation of said rotatable shaft to said roll, said gear means including a rotatable gear member mounted for axial movement along said shaft and guided by means of groove provided on the periphery of said shaft helical to the longitudinal axis I thereof, the course of said groove being governed by the angle of the frictional force between said rotatable shaft and said gear member occurring during the winding-up of said roll. v

Claims

1. A winding machine for the winding-up of strip material, comprising a roll onto which the material is to be wound, at least one support roller for supporting said roll at its periphery, a rotatable shaft disposed perpendicularly with respect to the axle of said roll, gear means operatively inteconnecting said shaft and said roll to thereby transmit the rotation of said rotatable shaft to said roll, said gear means including a rotatable gear member mounted for axial movement along said shaft and guided by means of groove provided on the periphery of said shaft helical to the longitudinal axis thereof, the course of said groove being governed by the angle of the frictional force between said rotatable shaft and said gear member occurring during the winding-up of said roll.