Summary of the invention:
The purpose of this utility model is to provide a kind of mechanism that can make cloth swing to rotation.
The utility model is achieved by the following technical solution: the drive roll of the positive and negative rotation of energy drives the driven roll single direction that the one-directional rotation device is housed by driving-chain and rotates.
The other end of driven roll is equipped with friction clutch.
The one-directional rotation device can be freewheel clutch, ratchet, unilateral bearing.
The utlity model has simple in structurely, the advantage that result of use is good can adapt to the use that computer has multiple widely different transition of the pattern of quilting on shuttle multi-needle quilter, the embroidering machine.
The specific embodiment:
See accompanying drawing 1,2, the utility model comprises frame 1, sprocket wheel 2, unidirectional transmission 3, loose roll 4,41, driven roll 5, friction clutch 6, motor 7, drive roll 8, driving-chain 9, drive roll 8 and loose roll 41, driven roll 5 is fitted in twos with loose roll 4 and is packed on the frame 1 by bearing block, one end of drive roll 8 is fixed with can be just by computer control, the motor 7 of counter-rotating, sprocket wheel on the drive roll 8 links to each other with sprocket wheel 2 on the driven roll 5 by driving-chain 9, one-directional rotation device 3 is housed in the rotating shaft of driven roll 5, the opposite side of driven roll 5 then is equipped with friction clutch 6, and the other end is fixed on the friction clutch 6.
One-directional rotation device 3 can be freewheel clutch, ratchet, unilateral bearing.
When using the utility model, when computer control motor forward rotation, drive roll 8 forward rotation, driving driving-chain 9 rotates, driving-chain 9 makes sprocket wheel 2 rotate, because of on driven roll 5, being equiped with one-directional rotation device 3, driven roll 5 can not rotate, so sprocket wheel 2 idle running, because the cloth of quilting in clamping between drive roll 8 and loose roll 41, and the surface coverage of driven roll 5 and loose roll 4 has the very big material of damped coefficient, so treat that both strain by it for the cloth of quilting, make one of the cloth of quilting by drive roll 8 and loose roll 41 tractions, the other end by driven roll 5 and loose roll 4 tensions by the quilting zone; When computer control motor 7 backward rotation, drive roll 8 backward rotation, driving driving-chain 9 rotates in the opposite direction, driving-chain 9 makes sprocket wheel 2 backward rotation, because of one-directional rotation device 3 is housed on driven roll 5, rotates so sprocket wheel 2 drives one-directional rotation devices 3, one-directional rotation device 3 makes driven roll 5 rotate, so one of cloth that wants quilting then by driven roll 5 and loose roll 4 tractions, the other end by drive roll 8 and loose roll 41 tensions oppositely by the quilting zone.Like this, the cloth of quilting just can quilting goes out different widely different transition of the pattern of pattern in its forward and reverse motion process.
Adjust the friction clutch 6 of driven roll 5 one sides, can make the friction in the rotation process of driven roll 5 increase or reduce, that is increase or reduce to be clamped in and treat quilting cloth tightening force between driven roll 5 and the loose roll 4, reduced the sag for the treatment of the quilting cloth between drive roll 8 and driven roll 5.
One-directional rotation device 3 can be installed in the relative other end of drive roll 8 and motor 7 again.