FIELD: textiles, paper.
SUBSTANCE: mechanism of transportation of fabric of sewing machine comprises a kinematic chain of movements of the rack bar, comprising the system of rods and levers, at that on the main shaft the profile cam is mounted which is connected with the toothed plate kinematically connected through the shaft-rocker and the lever with the rack bar, and the profile cam is made sine-shaped. The connection of the toothed plate with the shaft-rocker is made of a gear wheel engaged with the toothed plate, at that the gear wheel is mounted coaxially with the bevel gear, which is in contact with the shaft, at the end of which a similar bevel gear is located through the train of gears connected with the shaft-rocker. The mechanism enables to increase the wear-resistance and reliability of operation under high dynamic loads.
EFFECT: mechanism is universal and can be used for a wide range of sewing machines.
2 cl, 3 dwg
Title | Year | Author | Number |
---|---|---|---|
ZIGZAG SEWING MACHINE | 1999 |
|
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SU1089189A1 |
AUTOMATIC SEWING MACHINE FASTENER | 1991 |
|
RU2010049C1 |
Authors
Dates
2013-09-20—Published
2011-12-29—Filed