Strobel VEB100-1, Mechanic'S Instructions

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MA_VEB100-1-2-2W-4-5_A3-1_190627_en.doc
3.12.1 Setting the feed dog at the seam lock
The feed dog height is set by means of pneumatic cylinder (1) through lever (2) and
eccentric bush (3). The feed movement remains the same as before but the feed dog
does not catch the material.
The setting should be very smooth. Aluminium plate (4) is only fixed with one screw
and can be slightly displaced, therefore please make sure that none of the moving
parts touches the plate or jams.
Tense spring (5) at lever (2) by means of screw (6) in a way that during the normal
sewing operation the feed dog cannot be pressed upwards (through the pressure of
the feed plates). In this case the machine would rattle during sewing.
ATTENTION: Set the feed dog in a way that during the seam lock and the
programmable seam lock (lifted position) neither looper nor looper
shaft touch the feed dog in the upper part. In the lower part the feed
dog should move just above the material but should not catch it.
With the feed dog not being lifted, i.e. during the normal sewing operation, it should
feed the material. This is a bit complicated since the feed dog can be pushed in all
directions due to the large borings.
The lifting height of the feed dog can be set through threaded pin (7) in the aluminium
plate (from below).
Threaded pin (7) is fixed through bolt (8) and threaded pin (9).
Please make sure that in lifted position the feed dog does not feed the material and
does not touch the looper.
Position of eccentric bushing:
outer steel bushing (10) : Eccentric backwards app. 10° up
inner bushing (3) : Eccentric forwards app. 25° down