US2759678A - Rewind shaft injector - Google Patents

Description

W. GODDARD ETAL Aug. 21, 1956 REWIND SHAFT INJECTOR 5 Sheeis-Sheet 2 Filed Feb. 2, 1954 INVENTOR Her/aer1-Zu'6b and m H mm m M. Z d

5 1956 H. w. GODDARD ETAL 2,759,678

REWIND SHAFT INJECTOR Filed Feb. 2, 1954 3 Sheets-Sheet. 3

Herber/Zl/So oldarcl an 1. eon aral lPo c/rs'l'rorn ATTORNEY United States Patent REWIND SHAFT INJECTOR Herbert W. Goddard, Rosedale, and Leonard Rockstrom,

Manhasset, N. Y., assignors to Cameron Machine Company, Brooklyn, N. Y., a corporation of New York Application February 2, 1954, Serial No. 407,632 15 Claims. (Cl. 242-66) This invention relates to a rewind shaft injector or loader and it is primarily useful on a winding or rewinding machine such as that shown in pending application 390,002, filed November 3, 1953.

Paper or other material is unwound from a mill roll and rewound in a rewind machine, and prior to effecting this rewinding, the web is slit into narrower widths. The running web after slitting is rewound in the valley between closely spaced parallel winding rolls by surface contact with those rolls. The paper is initially threaded upon a rewind shaft mounted in bearings at each end of the winding rolls and the shaft containing the paper thereon is rotated by the winding rolls, both being rotated in the same direction. Although the rewind shaft has generally been lowered between the winding rolls by hand, it has been found that lowering it mechanically into this valley and into the bearings supporting it is far superior in avoiding injury to the winding rolls and the shaft and obtaining speedy and accurate alignment of the rewind shaft with the bearings for the rewind shaft.

This invention therefore contemplates an injector or loader for taking a shaft from the ready trough and lifting it over the highest horizontal point on the front winding roll from which it rolls down to receiving arms which lower it slowly and accurately into the rewind shaft bearings and into the valley between the two winding rolls. The lifting or pick-up arms are preferably geared to the lowering arms and both are preferably concentric in their pivotal movement with the front rewind shaft. The pickup arms have a longer stroke or are of movement than the lowering arms and a pinion mounted adjacent the arms is positioned to co-operate with racks on each pair of arms to produce this greater are of movement for the pick-up arms. Double acting hydraulic cylinders are connected to each pick-up arm and because the arms are geared together the movement of the pick-up arms is oppositely imparted to the lowering arms. A synchronizing shaft is attached by levers to the lowering arms which assures that the two sets of arms at each end of the front winding roll operate in unison.

Other objects and advantages of the invention will be apparent from the following description and the accompanying drawings in which:

Figure l is a sectional view of the front of a rewind machine embodying the shaft injector of the present invention.

Figure 2 is a fragmentary sectional view showing the lowering arm at one end of the machine, and its geared connection to the corresponding pick-up arm.

Figure 3 is a sectional view of the pick-up and lowering arms on the left end of the machine from their left side.

Figures 4 and 5 are sectional Views on line 55 of Figure 3 through the front winding roll and the pick-up and lowering arms, with the center of the roll being omitted and Figure 5 being a continuation of Figure 4 to the right.

In the drawings similar numerals refer to similar parts throughout the several views.

The winding machine has a base 1 and end uprights 2 and the running web 3 enters the machine from the rear, passing over a compensating roll not shown and forming no part of this invention and under backing roll 5 and then over front winding roll 6 to the rewind shaft 7 in the valley between the front winding roll 6 and the rear winding roll 8, the rewind shaft 7 being held by rewind shaft clamps or bearings 9 mounted on carriages 10. The front winding roll 6 has attached to its ends short shafts 11 and 12 riding in bearings 13 mounted in frame sections 14 in the base members 1 at the ends of the machine. The front winding roll is driven through flexible coupling 15 on the end of short shaft 12.

Short shafts 11 and 12 have thereon flanged collars 16 rigidly attached to frame sections 14. These flanged collars each have on their inner sides a stub shaft 17 carrying a pinion 18. Rotating on flange collars 16 are pick-up arms 19 which have forwardly projecting points as shown in Figures 1 and 3, these points projecting out beyond the ends of ready trough 20 on which a rewind shaft is initially placed. The rewind shafts intended to be used in the instant invention have a spool end which rotates on the shaft, the flanges of the spool being shown at 21. Likewise the other end 22 of this rewind shaft 7 rotates independently of the shaft for a lengthwise distance slightly greater than the width of the bearings 9 holding the shaft, this rotating section being shown at 22 in dotted lines in Figure 5, although the precise construction of the rewind shaft forms no part of the present invention. As the rewind shaft is placed in the ready trough 20 it is preferably so placed that the guide 23 is between the collars 21 of the spool end of the rewind shaft 7 so as to accurately guide the shaft longitudinally as it is moved sidewise from the ready trough 20 by the pick-up arms 19 over the front winding roll 6, the guide extending substantially to the valley between the winding rolls as shown at 24.

Lowering arms 25 are likewise pivoted around collar 16. These arms have rigidly attached thereto racks 26. Pick-up arms 19 have integrally thereon concentric with racks 26, racks 27. Pinions 18 above described are geared between these two racks 26 and 27 so that movement of the pick-up arms 10 is imparted to lowering arms 25 and because the circumference of racks 27 is less than that of racks 26, a given movement of pick-up arms 19 imparts a lesser movement or a smaller arc of movement to lowering arms 25. Both sets of arms 19 and 25 in their attachement to flanged collar 16 are divided into sections which are rigidly connected together by screws 29 and 28 respectively. The flanges on both sides of the collar 16 hold the arms securely in place.

Double acting hydraulic cylinders 30 operate pistons 31 connected to pick-up arms 19 in either direction to either raise or lower these arms. Levers 32 are rigidly connected to shaft 33 extending the width of the machine and to these levers are connected links 34 connected to the lowering arms 25 at 35. By this construction shaft 33 serves as a synchronizing shaft to assure that movements of the lowering arms 25 at both sides of the machine always take place in unison. Because of the arms at both ends of the machine being connected by the gearing above described this synchronizing shaft likewise assures that both pick-up arms 19 also always act in unison.

It will therefore be apparent as shown in Figures 1 and 3 that a rewind shaft resting in ready trough 20 may be lifted therefrom by pick-up arms 19 and passed over the highest horizontal portions of the front winding roll 6 along which it rolls a distance until encountered by the lowering arms 25 which have moved up simultaneously with the raising of the pick-up arms to receive the on- Patented Aug. 21, 1956' coming rewind shaft and lower it slowly into the bearings 9.and into the valley between the winding rolls 6 and 8 where it is ready to be threaded with the web and on which the running web is then wound. It will be apparent from the above detailed description that many modifications of the precise structure of the loader may be made without departing from the spirit of the invention. What is claimed as new and is desired to be secured by Letters Patent is:

1. In a winding machine having front and rear surface winding rolls spaced apart and rotatable in the same direction to receive in the valley between them a rewind shaft, the improvement comprising, pick-up arms pivoted substantially axially of and at each end of the front winding roll to receive thereon a rewind shaft and lift the same over the front winding roll, pivoted lowering arms at the ends of and projecting from the front winding roll pivoting separately from the lifting arms to receive a rewind shaft raised by the pick-up arms and lower it into said valley and means to actuate and coordinate the pivoting of the arms simultaneously in opposed directions to raise a shaft and then lower it.

2. In a winding machine having front and rear surface winding rolls spaced apart and rotatable in the same direction to receive in the valley between them a rewind shaft and a ready trough forward of the front roll, the improvement comprising, pick-up arms pivoted substantially axially of and at each end of the front winding roll extending forward to the ready trough to receive thereon a rewind shaft and lift the same from the ready trough and over the front winding roll, lowering arms at the ends of and projecting from the front winding roll pivoted coaxially with and pivoting separately from the lifting arms to receive a rewind shaft raised by the pick-up arms and lower it into said valley and means to actuate and coordinate the pivoting of the arms to raise a shaft and then lower it.

3. In a winding machine having front and rear surface winding rolls spaced apart and rotatable in the same direction to receive in the valley between them a rewind shaft and a ready trough forward of the front roll, the improvement comprising a pair of pick-up arms pivoted substantially axially of and at each end of the front winding roll extending forward to the ready trough to receive thereon a rewind shaft and lift the same from the ready trough and over the front winding roll, a pair of pivoted lowering arms at the ends of and projecting from the front winding roll pivoting separately from the lifting arms to receive a rewind shaft raised by the pick-up arms and lower it into said valley and moving means to move said pairs of arms through separate fixed arcs, one pair through an are greater than the other pair simultaneously.

4. In a winding machine having front and rear surface winding rolls spaced apart and rotatable in the same direction to receive in the valley between them a rewind shaft and a ready trough forward of the front roll, the improvement comprising, a pair of pick-up arms pivoted substantially axially of and at each end of the front winding roll extending forward to the ready trough to receive thereon a rewind shaft and lift the same from the ready trough and over the front winding roll, a pair of pivoted lowering arms at the ends of and projecting from the front winding roll pivoting separately from the lifting arms to receive a rewind shaft raised by the pick-up arms and lower it into said valley and means to connect said pairs of arms together at each end of the rewind rolls to move one pair when the other is moved.

In a winding machine having front and rear surface winding rolls spaced apart and rotatable in the same direction to receive in the valley between them a rewind shaft, the improvement comprising, a pair of pick-up arms pivoted substantially axially of and at each end of the front winding roll to receive thereon a rewind shaft and lift the same over the front winding roll, a pair of pivoted lowering arms at the ends of and projecting from the front winding roll pivoting separately from the lifting arms to receive a rewind shaft raised by the pick-up arms and lower it into said valley, and gears on both pairs of arms and gears between said gears on the pairs of arms connecting the pairs of arms together, whereby movements of one pair impart movement to the other.

6. In a winding machine having front and rear surface winding rolls spaced apart and rotatable in the same direction to receive in the valley between them a rewind shaft, the improvement comprising, a pair of pick-up arms pivoted substantially axially of and at each end of the front winding roll to receive thereon a rewind shaft and lift the same over the front winding roll, a pair of pivoted lowering arms at the ends of and projecting from the front winding roll pivoting separately from the lifting arms to receive a rewind shaft raised by the pick-up arms and lower it into said valley and gears on both pairs of arms and gears between said gears on the pairs of arms connecting the pairs of arms together whereby movements of one pair are simultaneously imparted to the other, said gears being related to each other to move one pair of arms in a greater arc than the other and means to move said pairs through fixed arcs.

7. In a winding machine having front and rear surface winding rolls spaced apart and rotatable in the same direction to receive in the valley between them a rewind shaft, the improvement comprising, a pair of pick-up arms pivoted substantially axially of and at each end of the front winding roll to receive thereon a rewind shaft and lift the same over the front winding roll, a pair of lowering arms at the ends of and projecting from the front winding roll pivoted coaxially with the lifting arms to receive a rewind shaft raised by the pick-up arms and lower it into said valley and gears on both pairs of arms and gears between said gears on the pairs of arms connecting the pairs of arms together whereby movements of one pair are simultaneously imparted to the other, said gears being related to each other to move one pair of arms in a greater are than the other.

8. In a winding machine having front and rear surface Winding rolls spaced apart and rotatable in the same direction to receive in the valley between them a rewind shaft and a ready trough parallel to and forward from said front roll, the improvement comprising, pick-up arms pivoted substantially axially of and at each end of the front winding roll to lift a rewind shaft from the ready trough and move it over the front winding roll, pivoted lowering arms at the ends of and projecting from the front winding roll pivoting separately from the lifting arms to receive a rewind shaft raised by the pick-up arms and lower it into said valley.

9. In a winding machine having front and rear surface winding rolls spaced apart and rotatable in the same direction to receive in the valley between them a rewind shaft and a ready trough forward of the front roll, the improvement comprising, a pair of pick-up arms pivoted substantially axially of and at each end of the front winding roll extending forward to the ready trough to receive thereon a rewind shaft and lift the same from the ready trough and over the front winding roll, a pair of pivoted lowering arms at the ends of and projecting from the front winding roll pivoting separately from the lifting arms to receive a rewind shaft raised by the pick-up arms and lower it into said valley, means to connect said pairs of arms together at each end of the rewind rolls to move one pair when the other is moved and separate means at each end of said front winding roll to move said arms to raise and lower a rewind shaft between the winding rolls.

10. In a winding machine having front and rear surface winding rolls spaced apart and rotatable in the same direction to receive in the valley between them a rewind shaft, the improvement comprising, a pair of pick-up arms pivoted substantially axially of and at each end of the front winding roll to receive thereon a rewind shaft and lift the same over the front winding roll, a pair of pivoted lowering arms at the ends of and projecting from the front winding roll pivoting separately from the lifting arms to receive a rewind shaft raised by the pick-up arms and lower it into said valley, means to connect said pairs of arms together at each end of the rewind rolls to move one pair when the other is moved, separate means at each end of said front winding roll to move said arms to raise and lower a rewind shaft between the winding rolls and synchronizing means extending between the arms at each end of the front winding roll to coordinate the movement of the arms at one end with those at the other end.

11. In a Winding machine having front and rear surface Winding rolls spaced apart and rotatable in the same direction to receive in the valley between them a rewind shaft, the improvement comprising, a pair of pick-up arms pivoted substantially axially of and at each end of the front winding roll to receive thereon a rewind shaft and lift the same over the front winding roll, a pair of pivoted lowering arms at the ends of and projecting from the front winding roll pivoting separately from the lifting arms to receive a rewind shaft, raised by the pick-up arms and lower it into said valley and separate means at each end of said front winding roll to move said separate pairs of arms in opposite directions to raise and lower a rewind shaft between the winding rolls.

12. in a winding machine having front and rear surface winding rolls spaced apart and rotatable in the same direction to receive in the valley between them a rewind shaft, the improvement comprising, a pair of pick-up arms pivoted substantially axially of and at each end of the front winding roll to receive thereon a rewind shaft and lift the same over the front winding roll, a pair of pivoted lowering arms at the ends of and projecting from the front winding roll pivoting separately from the lifting arms to receive a rewind shaft raised by the pick-up arms and lower it into said valley, separate means at each end of said front winding roll to move said arms to raise and lower a rewind shaft between the winding rolls and synchronizing means extending between the arms at each end of the front winding roll to coordinate the movement of the arms at one end with those at the other end.

13. In a winding machine having front and rear surface winding rolls spaced apart and rotatable in the same direction to receive in the valley between them a rewind shaft, the improvement comprising, a pair of pick-up arms pivoted substantially axially of and at each end of the front winding roll to receive thereon a rewind shaft and lift the same over the front winding roll, a pair of lowering arms at the ends of and projecting from the front winding roll pivoted coaxially with the lifting arms to receive a rewind shaft raised by the pick-up arms and lower it into said valley and gears on both pairs of arms and gears between said gears on the pairs of arms connecting the pairs of arms together whereby movements of one pair are simultaneously imparted to the other and separate means at each end of said front winding roll to move said arms to raise and lower a rewind shaft between the winding rolls.

14. In a winding machine having front and rear surface winding rolls spaced apart and rotatable in the same direction to receive in the valley between them a rewind shaft, the improvement comprising, a pair of pick-up arms pivoted substantially axially of and at each end of the front winding roll to receive thereon a rewind shaft and lift the same over the front winding roll, a pair of lowering arms at the ends of and projecting from the front winding roll pivoted coaxially with the lifting arms to receive a rewind shaft raised by the pick-up arms and lower it into said valley and gears on both pairs of arms and gears between said gears on the pairs of arms connecting the pairs of arms together whereby movements of one pair are simultaneously imparted to the other, separate means at each end of said front winding roll to move said arms to raise and lower a rewind shaft between the winding rolls and synchronizing means extending between the arms at each end of the front winding roll to coordinate the movement of the arms at one end with those at the other end.

15. In a winding machine having front and rear surface Winding rolls spaced apart and rotatable in the same direction to receive in the valley between them a rewind shaft, the improvement comprising, a pair of pick-up arms pivoted substantially axially of and at each end of the front winding roll to receive thereon a rewind shaft and lift the same over the front winding roll, a pair pivoted lowering arms at the ends of and projecting from the front winding roll pivoting separately from the lifting arms to receive a rewind shaft raised by the pick-up arms and lower it into said valley, means to connect said pairs of arms together at each end of the rewind rolls to move one pair when the other is moved and means at each end of said front winding roll to move said separate pairs of arms toward and away from each other to raise and lower a rewind shaft between the winding rolls and synchronizing means extending between the arms at each end of the front winding roll to move the arms at one end simultaneously with those at the other end.

References Cited in the file of this patent UNITED STATES PATENTS 1,939,198 Berry Dec. 12, 1933 2,337,585 Berry Dec. 28, 1943 2,682,379 Piper et a1 June 29, 1954

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