JPS63171778A - Bobbin for roving - Google Patents

Abstract

PURPOSE:To automaticaly wind the edge of a roving onto an engaging band certainly even in the imperfect installation of a bobbin onto a supporting body, by installing the engaging band which has the width larger than the height of the engaging projection of the supporting body of a bobbin rail, onto the outer periphery of the bobbin. CONSTITUTION:Though a vacant bobbin 5A installed onto a peg conveyor is attached onto the engagement projection 8 of a supporting body 7 during the rising of a bobbin rail 6, the perfect installation state into an engaging groove 5b and the imperfect installation state in the floating by the height H are generated, and when the bobbin rail 6 stops at a winding starting position, said vacant bobbin 5A is pressed onto the supporting body 7 by a pipe replacing arm 32B, and an engaging band 9 is set oppositely to a pressor eye 4a. If a fly frame is started in this state, the supporting body 7 and the flyer revolve, and when the engagement projection 8 coincides with the engagement groove 5b, also the vacant bobbin 5A in the imperfect installation state revolves, and a centrifugal force acts onto the balance side of the pressor 4 by the revolution of the flyer, and the edge of a roving is wound onto the engaging band 9 which is formed wider than the engagement projection 8. Thus, automatic winding of the edge of the roving on the fly frame is permitted.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a roving bobbin that is attached to a locking protrusion of a bobbin rail support of a roving machine and winds up braided yarn. This invention relates to a bobbin for roving that is capable of automatic winding.

Conventional technology Conventionally, tube changing on a roving frame was carried out by manually taking out a full bobbin from the bobbin rail support, feeding an empty bobbin, then returning the bobbin rail from the tube changing position to the first winding position, and then moving it from the presser eye. The roving machine was started after manually winding the hanging ends of the braided threads one by one around the straps of the empty bobbins.

The bobbin strap should be narrow enough to attach the end of the roving (
5m or less).

Problems to be Solved by the Invention When changing the tube of a roving frame manually, it is possible to reliably attach the empty bobbin to the locking protrusion of the support of the bobbin rail. When changing the tubes, it is difficult to match the locking grooves of all bobbins with the locking protrusions on the support, so the empty bobbins installed on the support are completely installed by fitting into the locking protrusions. One is in a state where it is in an incompletely attached state, and the other is in an incompletely attached state where it is not fitted into the locking protrusion but rests on the upper surface of the support. Since the roving machine is started immediately after the tube change, the roving end cannot be automatically wound around the hooking band of an incompletely installed empty bobbin, so the roving machine cannot automatically wind the roving end. This was a factor that hindered automation after changing clothes.

Means for Solving the Problems In order to solve these problems, the present invention provides a method for either an incompletely installed state where the support does not fit into the locking protrusion or a completely installed state where the support body does not fit into the locking protrusion. Also, a latching band wider than the height of the latching protrusion was fitted around the outer periphery of the bobbin so that the latching band of the empty bobbin attached to the support faced the presser eye of the flyer at the first winding position when the roving machine was started. It is characterized by

When changing clothes manually, the presser eye is positioned slightly above the latching band at the start winding position so that the end of the yarn hanging from the presser eye of the flyer faces the latching band, but using the bobbin of the present invention, When performing automatic tube change, the latches of all empty bobbins, both incompletely loaded and fully loaded, are used at the first winding position so that they face the presser eye.

Function When automatic bobbin change is performed using the bobbin of the present invention, the retaining bands of all incompletely loaded and fully loaded empty bobbins are facing the presser eye at the start winding position, so when the roving machine is started, the prefuser stops rotating. The end of the braided yarn hanging down from the presser eye is brought into pressure contact with the latching band by centrifugal force and is wound around the latching band, and the automatic winding of the braided yarn ends of all the bobbins is reliably performed almost simultaneously.

Embodiment As shown in FIGS. 3 and 4, the lower hole 5a of the hollow cylindrical bobbin 5 (empty bobbin) fits into the cylindrical projection 7a of the support 7 of the bobbin wheel, and the inner periphery of the lower collar 5d at the lower end. The bobbin 5 is engaged with the locking groove 5b (6 or 8 protrusions) provided on the bobbin, the upper hole 5e of the bobbin 5 is inserted into the flyer leg 3a, and the bobbin 5 is rotated at high speed together with the support 7. . The bobbin 5 of this embodiment is formed with an upper collar 5c for suspending the bobbin with a changeable arm having a forked tip. The bobbin 5 is attached to the support 7, the roving frame 1 is started, and the bobbin 5 is fitted into the protrusion 7a of the support 7 at the initial winding position [1ff (Fig. However, the locking groove 5
The bobbin is in a so-called incompletely installed state in which the lower surface of the bobbin is resting on the locking protrusion 8 without the bobbin b not fitting into the locking protrusion 8 (Figs. 3 and 4).
In both the case of the bobbin in the fully installed state (Fig.) and the bobbin in the fully installed state that is also fitted in the locking projection 8, the locking band 9 has numerous resilient projections so that it faces the presser eye 4a through which the braided thread of the plexer 4 is passed. A wide latch 19 is attached to the outer periphery of the bobbin 5. That is, in order for the latching band 9 to be able to face the presser eye 4a on both the fully loaded and incompletely loaded bobbin 5, its width must be set to 11 wider than the height H of the latching protrusion 8, preferably H+5na. It is best to use a wider width.

The case where such a bobbin 5 is used in the changing machine 10 shown in FIGS. 1, 5, and 6 will be described below.

Reference numeral 1 shows a roving frame, on which a number of upper support type flyers 3 are suspended from the top rail 2.
is rotated at high speed via five gears on the drive shaft built into the top rail. Reference numeral 6 denotes a bobbin rail that moves up and down to form a thread bobbin, and a support body 7 is rotated at high speed via a drive shaft and gears.

Reference numeral 10 denotes a changing machine provided on the front side of the roving frame 1. A lifting motor 11 and a gear 1 are installed at the rear lower part of this changing machine 10.
The sliding shaft 13, which is connected via the motor 2 and reciprocated in the longitudinal direction of the changing machine 10 by the forward and reverse rotation of the lifting motor 11, is restricted from rotating and is mounted over the entire length of the changing machine 10. Several connectors 14 are fixed to the sliding shaft 13 at appropriate intervals in the axial direction, and the lower end of a drive link 15 is pivotally supported on each connector 14. 1
5, one end of a driven link 16, which is half the length of the driving link, is connected to the center of each pin.
An elevating mechanism 19 is constituted by several sets of so-called Scott Russell type strict linear motion mechanisms 18, each of which is pivotally supported at its other end by another connector 17 fixed to the lower part of the machine frame. A changing head 21, which will be described later, is fixed to several sets of receivers 20 connected with pins to the upper end of each drive link 15 and supported in the horizontal direction. Therefore, the changing head 21 connected to the lifting mechanism 19 is moved in the vertical direction via the sliding shaft 13 that reciprocates by the forward and reverse rotation of the lifting motor 11 and several sets of Scott Russell type strict linear movement mechanisms 18. to move up and down. This lifting movement is controlled by the lifting motor 1 using a plurality of limit switches (not shown).
This is done by controlling the rotation of 1.

A changing head 21 is connected to a lifting mechanism 19 and supported in the horizontal direction, and extends over the entire length of the changing machine 10. A changing head 21 is connected to a front and rear motor 22 fixedly attached to an end of the changing head 21 via a gear 23. A sliding shaft 24, which reciprocates in the longitudinal direction of the changing head 21 by forward and reverse rotation of the front and rear motor 22, is mounted over the entire length of the changing head 21 with its rotation restricted. Several connectors 25 are fixed to the moving shaft 24 at appropriate intervals in the axial direction, the rear ends of drive links 26 are pivotally supported on each connector 25, and a drive link 26 is attached to the center of each drive link 26. One end of the driven link 27, which is half the length of the link, is connected with a pin, and the other end of the driven link 27 is pivoted to another connector 28 fixed to the pipe switching head 21, so that several sets of So-called Scott Russell type strict linear motion mechanism 2
A longitudinal movement mechanism 30 consisting of 9 is installed in the horizontal direction, and a connecting rod 31 extending over the entire length of the pipe change head 21 is connected to the front end of the drive link 26 with a pin to the longitudinal movement mechanism 30. Two types of pipe changing arms 32A and 32B, long and short, which protrude horizontally toward the roving machine side, are connected to the front part of the connecting rod 31 with pins so as to be able to swing upward from a horizontal position, and correspond to the bobbin pitch P of the roving frame 1. They are arranged alternately at pitches, and are positioned in the longitudinal direction of the changing head 21 so that the changing arms 32A, 32B correspond to each bobbin 5 attached to the roving frame 1.

Further, the front ends of the changing arms 32A, 32B are formed into a forked shape, so that the bobbin 5 can be hung via the upper collar 5c. In addition, these changing arms 32A, 32B include:
A torsion spring may be interposed in the pivot portion to urge the distal end of the changeover arm downward. Therefore, changing arms 32A, 3 connected to this forward and backward movement mechanism 30 via a connecting rod 31
2B is.

A sliding shaft 2 that reciprocates by forward and reverse rotation of the front and rear motor 22
It moves back and forth in the horizontal direction via several Scott Russell type strict linear motion mechanisms 29. Also.

This back and forth movement is controlled by controlling the rotation of the back and forth motor 22 using a plurality of limit switches (not shown).

Further, a peg conveyor 34 is installed at the bottom of the changing machine 10, and extends over its entire length, and is rotated in the longitudinal direction by a drive motor 33.
two front and rear peg rows 36A in which pegs 35 are arranged in the longitudinal direction at a pitch corresponding to the bobbin pitch P of the roving frame;
36B are arranged in parallel at the same interval as the front and rear row spacing of the flyer 3 of the roving frame, and the full bobbin 5B and empty bobbin 5A for one roving frame are arranged in parallel.
can be placed at the same time. Further, this peg conveyor 34 is configured to circulate continuously or intermittently to discharge full bobbins 5B and supply empty bobbins 5A, and is connected during the forward and backward movement of the tube change arms 32A and 32B. The peg is made to reciprocate by one pitch in response to a command from a limit switch (not shown) operated by the rod 31 or the like.

During operation of the roving frame, the changing head 21 is raised to the highest position, one empty bobbin 5A is mounted on the peg 35 of the peg conveyor 34, and the changing machine 10 is on standby. When the roving frame 1 is full and stops, the bobbin rail 6 descends from the winding position to the changing position. (Position of imaginary line in FIG. 1) At this time, the roving between the presser eye 4a and the full bobbin 5B inevitably breaks due to the increased distance, and the end of the braided yarn hangs down from the presser eye 4a. Next, the changing arms 32A and 32B move forward, and at their forward ends, the forked portions at the tips touch the upper flange 5 of the full bobbin 5B.
Insert under c. Next, the bobbin rail 6 descends again,
After the full bobbin 5B comes off the flyer leg 3a and is captured by the changing arms 32A and 32B, it leaves the support body 7 and the bobbin rail 6 stops at the lowest position. full bobbin 5B
The changing arms 32A and 32B that have captured the
4 is moved by one pitch, the full bobbin 5B is passed between the empty bobbins 5A mounted on the peg conveyor 34, and carried above the empty peg 35, and then the tube exchange arms 32A, 32B are lowered and the peg conveyor 34 is moved. Attach it to the empty peg 35. Next, the changing arms 32A and 32B are moved backward to remove the forked part at the tip from the full bobbin 5B, and then the peg conveyor 34 is moved one pitch in the opposite direction to the above, and the empty bobbin 5A is transferred to the changing arm 32.
Make them correspond to A and 32B. From then on, the full bobbin 5B
The changing arms 32A, 32B perform a return operation opposite to the lifting operation, and the empty bobbin 5A on the peg conveyor 34 is captured by the changing arms 32A, 32B, and the support 7 of the bobbin rail 6 is
carry it upwards. Next, when the bobbin rail 6 is raised from the lowest position to the first winding position, the lower hole 5a of the empty bobbin 5A
The cylindrical protrusion 7a of the support body 7 is inserted into the empty bobbin 5.
A is pushed up, its upper hole 5c is also inserted into the flyer 3a, and the bobbin rail 6 is stopped at the first winding position. (1st
State shown in the figure) Since the empty bobbin 5A attached to the peg 35 of the peg conveyor 34 is only inserted into the peg at random, the locking protrusion 8 of the support body 7 is inserted into the locking groove 5d while the bobbin rail 6 is rising. A completely installed bobbin that fits, and an empty bobbin 5 that does not fit.
There are cases where the bottom surface of A is placed on the locking protrusion 8 and is incompletely attached.

Since the incompletely loaded empty bobbin is held at a high position by the height H of the locking protrusion 8, just before the bobbin rail 6 stops at the first winding position, the changing arm 32A, 32B is pushed upward and stopped at the start position, the weight of the changing arms 32A, 32B or the restoring force of the spring acts on the empty bobbin 5A, and the empty bobbin 5A is pressed against the support body 7. At this first winding position, the latches 9 of both the fully loaded and incompletely loaded bobbins face the presser eye 4a. (FIG. 4) When the roving frame 1 is started in this state, the support body 7 and the flyer 3 rotate, and the completely installed empty bobbin 5A rotates together with the support body 7. Incompletely installed empty bobbin 5
A is attached to the support body 7 by the changeover arms 32A and 32B as described above.
When the locking protrusion 8 of the support body 7 rotates to the position where it matches the locking groove 5d of the empty bobbin 5A, the incompletely installed empty bobbin 5A also fits into the locking protrusion 8 and the support body 7 is pressed against the locking protrusion 8. It begins to rotate as one with 7. As the flyer 3 rotates, a centrifugal force acts on the balance side of the presser 4, which was separated from the empty bobbin 5A, and the presser paddle presses against the bobbin's latching band 9, so that the roving ends hanging from the presser eye 4a face each other. The roving is stuck to the hooking band 9 that was being held and wound up, and the roving is wound around the hooking band 9. Even if the presser paddle comes into pressure contact with the empty bobbin 5A before the incompletely installed empty bobbin 5A is fitted into the locking protrusion 8, the width of the latching band 9 is widened and the latching band of the incompletely installed empty bobbin can also be attached to the presser eye 4a. This ensures that the braided yarn is wound correctly. When the winding of the braided yarn is finished, the changing arms 32A and 32B move back, and while the roving frame 1 is in operation, the full bobbin 5B that has been doffed by going around the bedding conveyor 34 of the changing machine 10 is taken out and a series of changing operations are carried out. is completed.

In conventional bobbins for roving, since the roving yarn is wound manually, the width of the hooking band 9 is narrow as described above, and bobbins with a width of 5 mm are widely used. At first, when automatic winding of the braided yarn was performed using this bobbin, there were many winding errors and the winding success rate was less than 92%. As a result of this test,
We focused on the fact that when the presser eye is completely attached, there are fewer mistakes when wrapping if the braided thread of the presser eye is placed opposite the upper part of the strap.

I tried an experiment by increasing the width of the strap.

Experimental results (1) Rovering machine and number of spindles RMK type 96 spindles manufactured by Toyowa Kogyo ■ (2
) Fryer rotation speed 900r, p, l11 (3) original
Material: 100% cotton (4) Thread count: Nel' 250 gelen/30 yards (5) When experimented 5 times (total number of spindles: 480 spindles) under the condition that the height of the locking protrusion 8 is H7am (see Figure 4) or more. The number of spindles that resulted in wrong winding was as shown in the table below.

Through the above experiments, the hanging? The width of the iF9 should be made wider than the height of the locking protrusion H + 5m+, so that when the empty bobbin is placed on the locking protrusion 8 and the bobbin is incompletely loaded, the width of the iF9 should be at least 3 m from the presser eye.
It has been found that if they are faced to each other so that there is a hooking belt 9 of length m or more (Q in FIG. 4), no wrapping errors will occur. It has also been found that since the presser paddle is brought into pressure contact with the strap 9 during automatic winding, it is necessary for the presser eye to face the strap 9 even when fully attached. It goes without saying that this latching belt 9 may be equipped with double rows of narrow latching straps instead of one wide latching belt. The bobbin of the present invention completes the automation of roving end winding after automatic changing by a changing machine, and its use is limited to the roving machine and changing machine of the above embodiments. Instead, the purpose can be achieved if the bobbin latching band is opposed to the presser eye when the bobbin is first wound, both when it is incompletely loaded and when it is fully loaded.

Effects of the Invention As described above, the bobbin of the present invention has a latching band wider than the height of the latching protrusion of the support, so that the bobbin attached to the support of the bobbin rail can be completely attached or incompletely attached. In either case, simply by starting the roving machine, the end of the braided thread hanging from the presser eye is reliably wrapped around the hooking band, eliminating the need for manual winding of the end of the roving. It becomes possible to automate the winding of yarn ends. Therefore, it is possible to save labor and to change the winding of the ends of the roving in a short time, thereby improving the operating rate of the roving frame.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a side view of the roving frame and changing machine in the starting position, FIG. 2 is a partial plan view of the changing arm of the changing machine, and FIG. 3 is a side view of the changing machine. Cross-sectional view of an empty bobbin in a fully loaded state,
FIG. 4 is an enlarged side view of the main part of FIG. 3, FIG. 5 is a plan view of the roving frame and changing machine, and FIG. 6 is a front view.

Claims (1)

[Scope of Claims] 1. In a roving bobbin that is attached to a locking protrusion on a support of a bobbin rail of a roving machine to wind up roving yarn, incomplete installation in which the bobbin does not fit into the locking protrusion of the support. Attach a latching band wider than the height of the latching protrusion around the outer periphery of the bobbin so that the latching band faces the presser eye of the flyer at the first winding position in both the fully loaded state and the fully loaded state where it fits into the latching protrusion. A bobbin for roving that is characterized by being fitted. 2. The roving bobbin according to claim 1, wherein when the height of the locking protrusion of the support is H, the width of the locking band is H+5 mm or more.