JPS6054409B2 - Method for preventing unwinding of delayed bobbins in a roving machine and its bobbin cradle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention has a bobbin guide leg in the center of an upper support flyer supported by a top rail that supports the upper part of the bobbin throughout the entire movement of forming the roving bobbin. , Bobbin supported by the bobbin rail... ・−゛... f±
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The present invention relates to a method for preventing unwinding of delayed balls that occur during the forming of a roving bobbin in a roving frame having an engaging protrusion for driving a pin, and a bobbin holder used to carry out the method. In a roving frame, when a roving breakage occurs due to the supply of sliver being exhausted or the sliver being wound around a roller, the forming of the roving bobbin of the weight where the roving breakage has occurred is interrupted, resulting in a so-called delayed ball.

Since the winding diameter of this delayed ball is different from that of a normal roving bobbin, subsequent winding cannot be performed, and if the operation is restarted in this state, the roving end of the delayed ball will be damaged by centrifugal force. The fibers are unwound and scattered, and the scattered fibers adhere to neighboring roving bobbins, deteriorating the quality of the roving. For this reason, it is desirable to remove the roving bobbin that has become a lagging ball as soon as possible, but as mentioned above, the upper part of the bobbin should be moved over the entire movement by the bobbin guide leg in the center of the flyer supported by the arm. In the case of a roving frame that is supported by the machine, it is impossible to remove the lagging balls by not lowering the bobbin rail below the bobbin forming movement after stopping the machine operation, but if you dare to do this, The roving of all spindles will be cut. Therefore,
In the case of a roving frame having the above configuration, a special band is wound around the roving end of the delayed ball without removing it during the forming of the roving bobbin, and the roving end is fixed by centrifugal force. This is to prevent unraveling. However, with this method of preventing the roving end from unraveling using a band, it has not been possible to completely prevent the roving end from unraveling when the roving end is located on the shoulder of the lagging ball. For this reason, it has been proposed that the bobbin θ-bin guide leg that supports the upper part of the bobbin is detachably attached to the fryer body so that it can be removed together with the delay ball.
This method has not been put into practical use because the boppin guide legs become unstable. In view of the above, the present invention provides that when a lagging ball occurs in the process of forming a roving bobbin in the above-described roving machine, after stopping the machine, the lagging ball engaged with the bobbin wheel is lifted. The lagging ball is disengaged from the bobbin wheel, and the lagging ball is placed on the bobbin holder to hold it in a position where it does not engage with the bobbin wheel.The lagging ball is also prevented from rotating and slipping. The present invention is intended to prevent the unwinding of delayed balls by re-operating the platform, and the present invention will be explained in detail below with reference to embodiments shown in the drawings.

In Fig. 1, reference numeral 1 denotes an upper support type fryer, and the upper fryer head 2 is vertically supported by a bearing 4 fixed in a top rail 3.
A gear 5 fixedly engaged with a gear 7 on a drive shaft 6 horizontally supported within the top rail 3 is driven at a predetermined high speed rotation.

A boppin guide leg 8 is provided at the center of the top support flyer 1, which is inserted into the top hole 10 of the bobbin 9 and always supports the top of the bobbin throughout the entire movement of forming the roving bobbin 12. . Further, below the top support flyer 1 supported by the top rail 3, there is provided a bobbin rail 13 that moves up and down in a predetermined manner for forming the roving bobbin 12. A bobbin wheel 14 concentric with the fryer 1 is arranged, and a drive shaft 15
It meshes with the upper gear 16 and is driven at a predetermined high speed rotation.
17 is a bobbin rail cover, and the upper part of the bobbin wheel 14 protruding from the upper surface of this bobbin rail cover 17 has a stepped part 18 for receiving the bobbin 9 and a lower hole 1 of the bobbin 9.
A protrusion 19 into which the bobbin wheel 14 is inserted is formed, and an engagement protrusion 21 is implanted in the protrusion 19 to engage with an engagement groove 20 at the bottom of the bobbin 9 and transmit rotation of the bobbin wheel 14 to the bobbin 9. has been done.

Before installing the bobbin 9 between the protrusion 19 of the bobbin wheel 14 and the boppin guide leg 8 of the upper support type fuser 1, the bobbin rail 13 is lowered to the tube change position below the winding start position. At the tube change position, fit the upper hole 10 of the bobbin 9 into the boppin guide leg 8, fit the lower hole 11 into the protrusion 19 of the bobbin wheel 14, and insert the engagement groove 20 at the lower part of the bobbin into the protrusion. 19, and the lower end of the bobbin is supported by the stepped portion 18 of the bobbin wheel 14, and the bobbin is mounted. As a result, the bobbin 9 is supported vertically and rotates integrally with the bobbin wheel 14 at a predetermined high speed rotation, and is heated by the upper support fryer 1 as the bobbin rail 13 moves up and down. The roving is wound in layers and formed into a predetermined roving bobbin 12. However, in a roving machine, when a roving breakage occurs during spinning, the roving bobbin 12 being formed becomes a lagging ball 1"2A, and the roving end of the lagging ball 12A unravels and scatters due to centrifugal force. Therefore, it is necessary to prevent the late ball 12A from unwinding due to centrifugal force, but in explaining the method for preventing the late ball 12A from unwinding according to the present invention, we will first explain the bobbin used to carry out the method of the present invention. The pedestal will be explained with reference to the embodiments shown in Figs. 2 and 3, 4 and 5. Figs. 2 and 3
The figure shows a first embodiment of a bobbin holder 22 according to the present invention, which is a portable bobbin holder that is formed to avoid interference with the stepped portion 18 of the bobbin wheel 14 and to be placed on the bobbin wheel cover 17. The stand 22 has a positioning hole 23 that fits into the protrusion 19 of the bobbin wheel 14, and a delay ball 12A.
The bobbin receiver 24 is set at a height such that the engagement groove 20 at the bottom of the bobbin 9 and the engagement protrusion 21 of the bobbin wheel 14 do not engage with each other.
, a means for preventing the delay ball 12A from rotating, which has a protrusion 25 protruding from the bobbin receiving portion 24 that engages with the engagement groove 20 of the bobbin 9, and a bobbin 9 of the delay ball 12A placed on the bobbin receiving portion 24. A means for preventing the delay ball 12 from slipping is provided, which is a fitting part 26 that fits into the lower part, and a permanent magnet that attracts the upper surface of the bobbin rail cover 17 is embedded in the bobbin holder 22. Therefore, this bobbin holder 22 can be positioned simply by fitting the positioning hole 23 into the protrusion 19 of the bobbin wheel 14 and placing it on the bobbin rail cover 17, but this permanent magnet 28 is not necessarily required. It is not necessary and can be omitted. FIGS. 4 and 5 show another embodiment of a bobbin holder 22A, and this bobbin holder 22A also has a positioning hole 23 and a male protrusion of the bobbin holder 2 of the delay ball 12A, like the bobbin holder 22 described above. 25 for preventing the delay ball 12A from rotating, and a fitting portion 26 for preventing the delay ball 12A from slipping.
7 are provided with downwardly bent portions 28A, 28A that fit into the portions 7.

Therefore, this bobbin holder 22A is also positioned by fitting its positioning hole 23 into the protrusion 19 of the bobbin wheel 14 and fitting the bent portions 28A, 28A at both ends into the bobbin wheel cover 17. be able to. Next, the method for preventing unwinding of delayed balls according to the present invention will be explained with reference to an embodiment shown in FIG.

Fig. 6a shows a state in which a lagging ball 12A occurs during the forming of the roving bobbin, and the machine is stopped by a command such as a roving breakage stop motion, and when the machine is stopped, the bobbin wheel 14 Lift up the engaged delay ball 12A and
As shown in Figure b, disengage the delay ball 12A from the bobbin wheel 14. Next, as shown in FIG. 6c, the bobbin holder 22 prepared in advance is placed on the bobbin rail cover 17 by fitting its positioning hole 23 into the protrusion 19 of the bobbin wheel 14 after lifting the delay ball 12A. When placed, the bobbin holder 2
2 is attracted to and positioned on the bobbin rail cover 17 by a permanent magnet 28. Next, as shown in FIG. 6D and FIG. 20 is engaged with the protrusion 25 of the bobbin holder 22, and the lower part of the bobbin 9 is fitted into the fitting part 26 of the bobbin holder 22. Due to this, the late ball 12
A is held in a position where it does not engage with the bobbin wheel 14,
Moreover, the projection 25 prevents rotation, and the fitting portion 26 prevents the delay ball 12A from shifting. Next, when the machine is operated again in this state (FIG. 6c), it is separated from the bobbin wheel 14 and the bobbin pedestal 22 is removed.
The delay ball 12, whose rotation is prevented by the projection 25, does not rotate even when the operation is restarted, and moves up and down while stopped on the bobbin holder 22. Therefore, the ends of the rovings of the late balls 12 are not unraveled by centrifugal force, and no scattered cotton is generated due to the late balls. Although the embodiment of the above method has been described using the bobbin holder 22, it goes without saying that the method can be carried out in the same manner using the other bobbin holder 22A shown in FIGS. 4 and 5. do not have. As described above, the present invention has a boppin guide leg in the center of the top support type flyer supported by the top rail that supports the top of the bobbin throughout the entire movement of forming the roving bobbin. In a roving machine that has a bobbin wheel supported on a rail that has a protrusion that supports the lower part of the bobbin and an engagement protrusion that drives the bobbin, if a lagging ball occurs during the forming of the roving bobbin, the machine is stopped. After that, lift the lagging ball that is engaged with the bobbin wheel to disengage it from the bobbin wheel, place the lagging ball on the bobbin holder, hold it in a position where it does not engage with the bobbin wheel, and remove the lagging ball. This prevents the balls from rotating and slipping, and then restarts the machine in this state to prevent the unwinding of late balls. This eliminates the generation of scattered cotton caused by late balls, resulting in stable quality of coarse grains. Not only can a yarn bobbin be obtained, but also the working environment can be improved by reducing flying cotton.

Further, the present invention has the feature that it can be easily applied to an existing roving frame by simply preparing a few bobbin holders.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing the flyer section of a roving frame to which the present invention is applied, FIGS. 2 and 3 are a plan view and a cross-sectional view showing the first embodiment of the bobbin cradle in use, and FIGS. FIG. 5 is a plan view and a cross-sectional view showing another embodiment of the bobbin holder in use, and FIG. 6 is an explanatory view showing the method of the present invention. DESCRIPTION OF SYMBOLS 1...Top support flyer, 3...Top rail, 8...Boppin guide leg, 9...Bobbin, 12
...Rovering bobbin, 12A...Late ball, 13...Bobbin rail, 14...Bobbin wheel, 17...Boppin wheel cover, 19...Protrusion, 21...
Engagement protrusion, 22, 22A... Bobbin holder, 23...
Positioning hole, 24... Bobbin receiving part, 25... Protrusion, 26... Fitting part.

Claims (1)

[Claims] 1. A top support flyer supported by a top rail has a bobbin guide leg in the center that supports the upper part of the bobbin throughout the entire movement of forming the roving bobbin, and In a roving machine whose supported bobbin wheel has a protrusion for supporting the lower part of the bobbin and an engaging protrusion for driving the bobbin, if a lagging ball occurs during the forming of the roving bobbin, the machine is stopped. After that, lift the lagging ball that is engaged with the bobbin wheel to disengage it from the bobbin wheel, place the lagging ball on the bobbin holder, hold it in a position where it does not engage with the bobbin wheel, and remove the lagging ball. A method for preventing the unwinding of delayed balls in a roving frame, characterized by preventing rotation and displacement of the balls and restarting the machine in that state to prevent unwinding of the delayed balls. 2 A portable bobbin holder that can be placed on the bobbin rail cover, which has a positioning hole that fits into the protrusion of the bobbin wheel, and a bobbin holder that holds the delay ball in a position where it does not engage with the bobbin wheel. A bobbin holder for use in the method according to claim 1, comprising: a rotation stopper for preventing the lagging ball from rotating; and a slip preventing means for preventing the lagging ball from shifting.