Bobbin Winder; Description; Setting The Bobbin Winder Stop - Duerkopp Adler 4181i-3 Instructions For Service Manual

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3.8 Bobbin winder

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3.8.1 Description

The winder (bobbin winder) winds a reserve of the hook thread.
It is driven by a spring-mounted friction gear, which stops after having
filled the bobbin.
An ideal winding is attained with a sufficient pretension of the thread
obtained on the thread guide (4) and with 1 mm under the diameter of
the bobbin. The shaft is mounted in a swinging way and the friction
gear is put into engagement by means of a pickup lever (1) and a cam.
The winder is fixed on the machine arm by two screws (3). The thread
is passed through according to the illustration, the thread is cut off
after having stopped the winding operation using the cutting device
(5).
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3.8.2
The moment of interrupting the winding is determined by the mutual
position of the pickup lever (1) and the cam (5) on a common shaft.
The cam is locked in its functional position by the screw (6). The
mutual position is to be set on a not incorporated winder in such a way
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that in the moment, when the pickup lever leaves the space of the
bobbin, the pressing function of the cam on the winders shaft is
interrupted and it moves in the sense of the arrow. A fine setting is to
be done on an incorporated condition in the machine. Using the screw
(2), the position of the friction part of the pickup lever (1) is adapted. In
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opening the lever, the stopping function is accelerated. Its inverse
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function delays it. A test is to be done after having inserted the bobbin,
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when passing the thread through the device and when winding at the
running of the machine.
3.8.3 Setting the friction gear
The friction gear is formed frontally by the disk (8) on the main top
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shaft of the machine and by the disk (7) with a rubber ring on the shaft
of the winder.
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- Proceed to the setting operation with a removed rear guard.
- The winder is in its stopped position.
- Loosen two screws (9) in the disk (8) through the hole in the arm.
- By shifting axially the disk in the sense A, B, set the disks of the
- Tighten the screws (9) in the disk (8).
- Put the winder in its working position and proceed to a winding test.
- Mount the rear guard.
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Setting the bobbin winder stop

Caution! Danger of injury!
Switch off the main switch! Before starting the setting
operation, wait until the motor stops!
winder (7) at the distance of 0.5 mm from the rubber ring.