DE1088006B - Belt wrapper for tape reel to control widely differing collar diameters - Google Patents

Description

GERMAN

kl. 7 b 5/60

INTERNAT. KL. B 21 C

PATENT OFFICE

EXPLAINING PAPER 1088 006

- V

m. η ■ ι * Ψ *

Ί '■■ ·'

S66612Ib / 7b

REGISTRATION DATE: JANUARY 14, 1959

NOTICE
THE REGISTRATION
AND ISSUE DEK
DISPLAY:

SEPTEMBER 1, 1960

When rewinding strip-like rolled material, belt loops are used to start with of the incoming tape to the rotating Iiaspel drum to press until a few turns are wound, after which due to a sufficient Frictional connection with train can be wound. Furthermore, belt wraps prevent a Bound on a decoiler drum when removing the binding by the inherent one Voltage bursts apart, leading to accidents and damage to the z. B. polished belt surface can lead.

In the case of the belt wraps used for unwinding, there is a requirement to have a range To see with widely differing collar diameters so that the collar is firmly held together and is safely carried by the belt.

However, a large wrap angle for coils with a large diameter requires a large belt length, when wrapping small coils and when the waistband is in rest position, in which the Belt should be tightened if there is excess. Is the wrapper constructively for small collar diameters designed, so with large diameters there are poor wrap-around conditions because they are too small Belt length.

Belt loopers of known design can usually be moved by a hydraulic piston drive either have a tension pulley provided with or spring-loaded pivot levers or eitie acted upon by a hydraulic piston drive .Tensioning pulley to store the excess belt length in the form of a loop. At the last mentioned, hydraulically operated loop formation must have two flexible pressure oil lines to the one on the frame Attached cylinder lead that the movability of the belt loop with respect to the The length of the route and the wear and tear of the hoses are detrimental.

The invention relates to such a hydraulically movable belt loop, in which the loop formation caused to store excess belt length by means of a hydraulic piston drive will. The advantage to be achieved with the invention is that the same piston drive serves both to move the belt loop and to tension the belt. Since the Piston drive is fixedly arranged, the lines mentioned are omitted in the invention.

1, 2 and 3 show the belt loop according to the invention in the working position on coils very different diameters and at rest.

Two endless belts 1 and 2 run next to each other

to master very different

Collar diameter

Applicant: Sundwiger Eisenhütte Maschinenfabrik

Grah & Co., Hemer (Kr. Iserlohn) -Sundwig

Dipl.-Ing. Hans Niggemann,

Hemer (Kr.Iserlohn) -Sundwig,

has been named as the inventor

Via the roller pairs 6, which are partly mounted in the frame 3 and partly on the pivot levers 4 and 5, 7, 8, 9, 10, 11. The hydraulic piston drive 12 and its piston rod are used to move the frame 3 13 is passed through a cylinder 14 with piston 15 attached to the frame 3 and at the outermost The end of the pair of tension rollers 16 carries. The cylinder 14 is filled with oil on both sides of the piston; both cylinder spaces are connected by a pipeline 18 provided with a gate valve 17.

At the beginning and during the advance in the working position, the piston 15 is in the rearmost, position opposite to the direction of travel. The gate valve 17 is closed so that the feed force only acts on the frame 3. Shortly before reaching the working position for all collar diameters is the same, the gate valve 17 is fixed by a control cam attached to the foundation 19 open. The frictional connection between piston drive 12 and frame 3 is thereby initially released. the Piston rod 13 continues on its way; their force now acts when the frame 3 is stationary the tension pulley pair 16, since the piston 15 is now moving and the oil through the line 18 from one Can displace cylinder space in the other. The pivot levers 4, 5 are tightened by the Belt pulled to the collar, whereby the frictional connection between piston drive 12 and frame 3 builds up again with increasing belt tension. When the piston drive 12 moves out of the working position reversed, the tensioning rollers 16 gradually relate to their old position until the piston 15 its way back in cylinder 14 on the right

009 589/18 +

Cylinder cover has ended. The pivot levers 4, 5 are now in the open position again; the frame 3 starts moving in the direction of the piston drive. Just before finishing his path will the gate valve 17 is closed again by the control cam 20 which is firmly attached to the foundation.

The cam 19 is designed so that it only opens the gate valve, the cam 20 so that he Gate valve only closes.

IO

Claims (3)

Patent claims: 1. Belt wrapper for tape reel for control Greatly different collar diameter and wrap angle, on the one hand by a stationary and with its piston rod Hydraulic piston drive acting on the frame can be moved into and out of the working position, and its belt, on the other hand, for taking up excess belt lengths through one of one hydraulic piston drive sliding tension pulley in a more or less strong loop is feasible, characterized in that the piston drive (12) for moving the frame (3) also used to move the tensioning roller (16), d. that is, when compared to the construction Conventional belt loop increased stroke of the piston drive (12) on the tensioning roller (16) At the end of the piston rod (13) and between the piston rod (13) and the frame (3) there is a hydraulic one Lock (14, 15, 17, 18) is arranged, which, switched on, piston rod (13) and frame (3) in Direction of travel frictionally connects, but switched off a relative displacement between allows both parts (3.13). 2. Belt loop according to claim 1, characterized in that the control of the lock (14, 15, 17, 18) arranged by the side of the frame track Stops (19, 20) takes place, of which the first in the direction of travel (20) the lock in Effectiveness sets and the second (19) solves it. 3. Belt loop according to claim 1 and 2, characterized in that the lock consists of one on the piston rod (13) seated, second and in one attached to the frame (3) and filled with oil The cylinder (14) consists of sliding pistons (15), the ones located on both piston faces Cylinder spaces through .eine compensating line (18) with one arranged in this and shut-off valves (17) operated by the stops (19, 20) are connected. Considered publications:
U.S. Patents Nos. 2,725,104, 2,477,843,
357 157, 2,325,504. 1 sheet of drawings © 009 589/184 8.60