Device for stopping the supply of rovings in a spinning unit
A technology for stopping equipment and roving, which is applied in textiles and papermaking, etc., can solve the problems of complex electronic system structure, system not very reliable, not very reliable, etc., and achieve energy saving, not easy to be disturbed, and reliable effect of stopping equipment
Active Publication Date: 2016-02-24
WENDERFUL TECH
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- Description
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- Application Information
AI Technical Summary
Problems solved by technology
A disadvantage of this type of pneumatic stopping device is that the amount of waste material is greatly increased, since the delivery of the roving is not stopped, but the material is only directed into the waste container
However, these systems are not very reliable and are extremely difficult to maintain
This system also has the disadvantage that more than one spinning position is interrupted due to a yarn break and the other parallel spinning positions must also be stopped until the yarn break is repaired
These electronic systems are complex, not very reliable in dirty and (sometimes) wet conditions, and require a lot of maintenance
Optical sensors are sensitive to dust and require a complex integration of the stop system into the control of the spinning unit
Method used
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Embodiment Construction
[0022] exist Figure 1-3 In , an embodiment of the stopping device according to the invention is shown in the state of normal operation of the spinning device, ie before the yarn breaks. The stopping device comprises a mechanical sensing lever 7 pivotally mounted on a pivot axis X on the rear side of the drafting zone A of the spinning unit. The sensing rod 7 is equipped at its front end with a laterally protruding sensing pin 8 which is repeatedly brought into contact with the yarn 11 by the rocking motion of the sensing rod 7 . The reciprocal rocking motion or push of the sensing lever 7 and its sensing pin 8 is indicated by arrow B in the figures. The purpose of this repeated contact between the sensing rod 8 and the continuously fed yarn 11 is to monitor the correct functioning of the spinning device, in other words, for the delivery side (output side) of the yarn 11 in the draft zone A Receive a message when a break occurs. To provide the rocking motion B of the sensin...
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Device (10) for stopping a rove supply in a spinning or twisting apparatus after breakage of a yarn (11) at the output side of a drafting zone (A) which comprises at least a pair of front rollers (3, 4) and a pair of back rollers (1, 2), whereby the rove (13) is delivered in normal operation by a pair of feed rollers from the input side and is formed to said yarn (11) in the drafting zone (A) and whereby the rove delivery is stopped upon breakage of the yarn (11), the stopping device (10) comprises a mechanical sensing lever (7) with a sensing pin (8) being repeatedly in contact with said yarn (11) and said sensing lever (7) is pivotally mounted on a pivot axis (X), wherein said sensing lever (7) has a release lever (9) opposite to said sensing lever (7) which is provided with a longitudinal release part (9a) being in engagement with a spring-loaded clamp device (12) such that in normal operation of the apparatus said clamp device (12) is open and closes after the break of the yarn (11) through the conjoint pivot movement of said sensing lever (7) and said release lever (9) about said pivot axis (X) to firmly clamp the rove (13) at the input side of said drafting zone (A) before said back rollers (1,2).
Description
technical field [0001] The invention relates to a device for stopping a roving supply in a spinning or splicing device after a yarn break. The purpose of these stopping devices is to prevent the continuous delivery of the roving supplied to the drafting zone of such a splicing device even after a yarn break occurs. The stopping device is used to stop the roving before the rear roll of the drafting section of the spinning unit, in order to prevent damage to the elements of the drafting section and to avoid the formation of fiber loops of roving material around the rolls. Such yarn breakage is a major problem in spinning machines. Not only is the continuous spinning operation interrupted, but the overall efficiency of spinning is also reduced. After such a break in the yarn, the operator of the spinning unit not only needs to reset the correct connection of the rovings, place the spun yarn on the delivery end of the drafting zone, and usually remove the lost roving material, w...
Claims
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IPC IPC(8): D01H13/18
CPCD01H13/188
Inventor 翁贝托·麦克莱蒂
Owner WENDERFUL TECH