JP3367560B2 - Woven cloth winding device for on-machine cross doffer - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a woven cloth winding device for an on-machine cross doffer, and more specifically, it mounts and rotates an empty roll on a pair of front and rear rotating rollers, at least one of which is a driving side. The present invention relates to an improvement of an on-machine cross doffer in a contact winding system that winds the edge of a woven fabric.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. 3-1465 discloses an on-machine cross doffer in the above contact winding system.
"Cloth winding roll changing device in a loom" disclosed in No. 6
It has been known. In this prior application, an empty roll (a cross roll on which a woven cloth is not wound) is placed on a pair of rotating rollers to perform contact winding, and a woven cloth of a predetermined length is wound and then a full roll (predetermined length). Cross roll around which a long woven cloth is wound) is moved to a stand installed in front of the loom, and then a new empty roll is placed on the rotating roller to separate the woven cloth between the winding side rotating roller and the empty roller. Sandwiched between
The cutter cuts the woven cloth between the take-up side rotary roller and the full roll, guides the woven cloth separated from the full roll to this new empty roll, and then the leading end of the woven cloth is fed to the empty roll and the delivery side. The leading end of the woven fabric is wound by guiding it between the rotating roller and the empty roll and the winding side rotating roller.

When winding such a woven cloth around an empty roll, it is required that the tip of the woven cloth be smoothly wound around the peripheral surface of the newly supplied empty roll. As a winding technique, there is a "cloth winding device for a loom" disclosed in JP-A-3-69640. In this prior-art technique, in addition to the configuration disclosed in JP-A-3-14656 as described above, a plurality of air injection nozzles are arranged side by side in the weft width direction in front of the front rotary roller, and Air jets from these nozzles are used to guide the woven fabric fed from between the front rotary roller and the peripheral surface of the empty roll.

[0004]

However, even if the leading end of the woven cloth is simply guided by the air jet along the peripheral surface of the empty roll in this way, the woven cloth will be loosened in the width direction due to the difference in the looseness. Cannot be prevented from being sandwiched between the empty roll and the rear rotary roller at different timings in the weaving width direction. As a result, the woven fabric is wound around the peripheral surface of the empty roll in a distorted state (in other words, in a state where a part of the woven fabric is loose in the width direction and wrinkles are generated).
In addition, wrinkles are generated in this portion, and wrinkles are also generated in the woven fabric portion wound after that. When wrinkles occur during winding, the quality of the wound woven fabric is significantly reduced.

An object of the present invention is to prevent the deterioration of the quality of the woven fabric due to the occurrence of slack in winding the woven fabric around the empty roll in the on-machine cross doffer for the contact winding system.

[0006]

[Means for Solving the Problems] In order to wind a woven cloth in contact by placing an empty roll between a pair of front and rear rotating rollers ,
Put the edge of the woven fabric after being cut from the full roll on the peripheral surface of the empty roll.
In a contact winding type winding device having a winding means for guiding and winding, a sliding member that can move forward and backward with respect to the rear peripheral surface of the empty roll, and this sliding member as the winding means.
Woven fabric edge wrapped around more empty roll
Is brought into contact with air rolls over the, and a driving mechanism for sliding a large becomes rate than weaving speed toward the upper peripheral surface thereof the winding direction, with the sliding of the sliding member Above woven cloth
The gist of the present invention is to provide a loosening mechanism for eliminating looseness of the woven fabric on the upstream side in the winding direction from the abutting position by sliding the end on the peripheral surface of the empty roll .

[0007]

Since the woven cloth is pulled by the sliding member during sliding, the looseness of the woven cloth against the empty roll is eliminated. Moreover, if the end point of sliding of the sliding member is set at least near the contact point between the empty roll and the rotary roller on the downstream side in the winding direction, the looseness of the pulled woven fabric is collected near the contact point. , Then the woven fabric is forced to fold in two and passes through the contacts.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of a woven fabric winding device according to the present invention. In the drawing, the woven fabric winding device has rotating rollers 1 and 2 which are arranged in a horizontal direction at intervals. These rotating rollers 1 and 2 are supported by a pair of frames,
At least one side, for example, the rear rotation roller 1 is on the drive side. In front of the loom, there is provided a stand 3 on which the discharged full rolls are placed, on which a cutter 5 is attached movably in the weft width direction in order to cut the woven cloth in the transverse direction. ing. Further, a plurality of air injection nozzles 4 are arranged side by side in the weaving width direction between the cutter 5 and the front rotary roller 2. The woven fabric C thus woven is guided to the front rotary roller 2 via the guide rollers 7 and 6 fixed to the frame.

A loosening mechanism 10, which is an essential part of the present invention, is provided behind the rotary roller on the downstream side in the winding direction, that is, behind the rear rotary roller 1. As shown in FIG. 2, the loosening mechanism 10 has a pair of swing levers 11 pivotally supported by the rear guide roller 6 at the lower end. Both ends of the rear guide roller 6 project from the pair of frames, and swing levers 11 are provided at both ends. A support shaft 12 extending in the weaving width direction is rotatably supported at the tips of the swing levers 11. This spindle 1
A sliding member 13 extending in the weft width direction is fixedly supported on the fabric 2. In the illustrated example, the sliding member 13 is a plate-shaped member continuous in the weaving width direction.

Further, locking pieces 15 are fixed to the support shaft 12 on the outer sides of both ends of the sliding member 13. A spring 14 is interposed between one locking piece 15 and the adjacent rocking lever 11, and this spring 14 has one end adjacent to one locking piece 15 and the other end also adjacent to the lever 11. , The support shaft 12 and the sliding member 13 are constantly urged to rotate upward in FIG. A stopper 16 is horizontally projectingly planted on the swing lever 11 to which the spring 14 is not attached, and is engaged with the other locking piece 15. This restricts upward rotation of the support shaft 12 and the sliding member 13 above a certain level. Therefore, the locking piece 1
The angle of the sliding member 13 in the stopped state can be adjusted as necessary by adjusting the installation posture of the No. 5 on the support shaft 12.

Further, the tip of the piston of the fluid pressure cylinder 17 is pin-connected to each body of at least one pair of rocking levers 11. The operation and operation timing of the fluid pressure cylinder are appropriately controlled by a known control circuit (not shown) as described later.

Next, the operation of the winding device having the above structure will be described. When the amount of the woven fabric wound around the empty roll A reaches a predetermined length, an extruding mechanism (not shown) provided on the loom engages with the side core of the full roll B (the shaft core protruding from both ends of the cross roll). Then, the full roll B is pushed out onto the stand 3 in front. Then, the empty roll A is newly rotated by the action of an empty roll supply mechanism (not shown).
Supply is placed on top. At this time, the woven fabric C is sandwiched between the empty roll A and the front side (winding side) rotating roller 2. Then, the cutter 5 moves in the weaving width direction to cut the woven cloth C between the empty roll A and the full roll B. After that, by the action of the air jets jetted from the plurality of air jet nozzles 4,
The cut woven fabric edge is guided onto the peripheral surface of the empty roll A.
At this timing, the loosening mechanism 10 is still in the standby position shown in FIG.

Although the weaving work by the interwoven loom continues, the rear side (feeding side) rotary roller 1 is stopped until the amount of the woven cloth reaches a predetermined length until the cutting of the woven cloth C is completed. There is. As a result, the woven cloth C from the front rotary roller 2 to the full roll B is placed in a stretched state, so that the woven cloth C is easily cut. After the cutting, the rear rotary roller rotates again, so that the woven fabric C is sequentially fed out from between the empty roll A and the front rotary roller 2. At this timing, the rear rotary roller 1 is not loaded at all, so the rear rotary roller 1 is driven by a torque motor (not shown) to rotate at a speed higher than the weaving speed. Further, the empty roll A is also rotating at the same speed as the rear side rotation roller 1.

Woven fabric C moved along the peripheral surface of empty roll A
It is then sandwiched between the empty roll A and the rear rotation roller 1. Then, when tension is generated in the woven cloth C and a load is applied to the rear rotary roller 1, the rotary roller 1 rotates at a speed corresponding to the weaving speed. However, the woven cloth C guided to the empty roll A by the air jet nozzle 4 is in a loose state,
Moreover, since the loosened state is different in the weaving width direction, the timing of being sandwiched between the empty roll A and the rear rotary roller 1 varies in the weaving width direction. Therefore, when the rear rotary roller 1 starts to rotate at a speed corresponding to the weaving speed as described above, the woven cloth C is distorted.

At this timing, the loosening mechanism 10 is started, the piston of the fluid pressure cylinder 17 is retracted, the lever 11 swings forward and downward, and the sliding member 13 attached to the tip of the lever 11 moves the rear rotary roller. 1 is contacted diagonally above the peripheral surface of the empty roll A, in other words, obliquely above the rear (delivery side) peripheral surface of the empty roll A. This state is shown in FIG. At this time, since the sliding member 13 is engaged with the peripheral surface of the empty roll A at its tip, there is still no relative movement with the peripheral surface of the empty roll A.

After that, the sliding member 13 moves to the rotational position Q together with the peripheral surface of the rotating empty roll A with the woven cloth C sandwiched therebetween. The rotation position Q is between the position where the tip of the sliding member 13 first engages with the peripheral surface of the empty roll A and the contact point P between the empty roll A and the rear rotary roller 1. During this period, the fluid pressure cylinder 17 exerts a downward biasing force on the sliding member 13, and the spring force of the spring 14 also acts on the sliding member 13, so that the tip of the sliding member 13 is not in contact with the peripheral surface of the empty roll A. The abutting engagement state is maintained.

When the tip of the sliding member 13 reaches the rotational position Q, the tip of the sliding member 13 is released from the engagement state with the empty roll A. As a result, the urging force of the fluid pressure cylinder 17 causes the sliding member 13 to move in the winding direction (toward the contact point P) at a speed higher than the peripheral speed of the empty roll A (in other words, the weaving speed). At this time, since the spring force of the spring 14 acts, the sliding member 13 slides on the peripheral surface of the empty roll A via the woven cloth C.

As a result of this sliding, the tip of the sliding member 13 is positioned near the contact P as shown in FIG. By the way, when the sliding member 13 is slid, the woven cloth C is pulled in the winding direction at a speed higher than the weaving speed. . Moreover, in the case of the illustrated embodiment, the sliding member 1
Since the tip of 3 has moved to the vicinity of the contact point P, the loose woven fabric C is gathered in the vicinity of the contact point P, and thereafter, the empty roll A and the rear rotation roller 1 are forcibly folded in two. Sandwiched between. Therefore, the woven fabric C is wound around the empty roll A in a state where a part of the woven fabric C is folded in half.

Thereafter, the piston of the fluid pressure cylinder 17 advances, and the entire slackening mechanism 10 returns to the standby position shown in FIG. That is, the sliding member 13 retracts from the empty roll A.
At this time, the tip of the sliding member 13 moves backward while contacting the peripheral surface of the empty roll A, but since the woven fabric edge has already been sandwiched between the empty roll A and the rear rotary roller 1,
The inconvenience that the woven cloth C sticks to the sliding member 13 does not occur. After that, the edge of the woven fabric is guided to the guide plate 8 provided below the empty roll A and moves toward the contact point between the empty roll A and the front rotary roller 2. In addition, if the tip of the sliding member 13 does not come into contact with the peripheral surface of the empty roll A after sliding, the sliding member 13 is retracted by separating from the peripheral surface of the empty roll A, the woven cloth C is This is more preferable because there is no concern that the sliding member 13 may move backwards.

If necessary, the sliding member 13 may be made to repeat the forward / backward movement twice or more continuously. In this way, the looseness remaining on the peripheral surface of the empty roll A is collected at the contact point P when the sliding member 13 slides, and the woven fabric C
Is folded in two and passes through the contact P.
As a result, the looseness of the empty roll A with respect to the peripheral surface is completely eliminated, and the woven cloth C is wound around the empty roll A in a tight state, and more preferable results are obtained.

In the above embodiment, the woven fabric edge is sandwiched between the empty roll A and the rear rotary roller 1, and then the sliding member 13
Have advanced. However, the sliding member 13 may be advanced before the woven fabric edge is pinched. However, since the end point of the sliding member 13 is set in the vicinity of the contact point P in the above embodiment, the woven fabric C must be present at the end point when the sliding member 13 reaches the end point. . That is, it is necessary that the woven cloth C is fed so that the woven cloth edge can pass through the P.

Since the empty roll A is rotating at a speed higher than the weaving speed before the end of the woven cloth passes through the contact point P, the sliding member 13 is circulated around the empty roll A through the woven cloth C at this time. When the sliding member 13 is brought into contact with the surface, the sliding member 13 moves at a speed corresponding to the peripheral speed of the empty roll A, and the looseness of the woven cloth C is removed from the contact portion to the upstream side. After that, when moving to the rotation position Q,
The sliding member 13 moves at a speed higher than the weaving speed in the same manner as in the above embodiment, and the woven cloth C is pulled in the winding direction,
It is evenly wound in the width direction.

In order to avoid a collision with the empty roll A at the time of advancing, the sliding member 13 is elastically biased by the spring 14 in the above-mentioned embodiment. However, instead of this, the sliding member 13 itself may be made of a thin plate so as to have elasticity.

The sliding member 13 is woven according to the weaving speed.
The moving path of the sliding member 13 may be set so that the sliding member 13 slides immediately when it comes into contact with the peripheral surface of the empty roll A when advancing, without a period of time for moving together with it. Further, if the moving path of the sliding member 13 is set to be close to the peripheral surface of the empty roll A, the sliding member is not necessarily made elastic or the sliding member 13
There is no need to give it elasticity.

Further, the position (end point) of the tip of the sliding member 13 after sliding is not limited to the vicinity of the point of contact P but may be the upstream side in the winding direction. Alternatively, on the contrary, it may be on the downstream side beyond the contact point P as shown in FIG. That is, the tip of the sliding member 13 may be projected between the empty roll A and the rear rotary roller 1.

In the case of such a construction, after the woven fabric end is sandwiched between the empty roll A and the rear side rotating roller 1 (the woven fabric end then passes through the contact point between the empty roll A and the front side rotating roller 2). Before or after passing), the loosening mechanism 10 starts and the sliding member 13 advances. When the sliding member 13 advances, the tip of the sliding member 13 first comes into contact with the peripheral surface of the empty roll A and the peripheral surface of the rear rotary roller 1 in the vicinity of the contact point P, and then the empty roll A is moved forward and upward. Move while pushing. At this time, the tip of the sliding member 13 moves at a speed higher than the peripheral speed of the empty roll A, so that it slides on the peripheral surface of the empty roll A. By this sliding, the woven cloth C is pulled in the winding direction and the looseness is collected at the contact point P, and as shown in the figure, it is forcibly folded in two and pushed to the contact point P. After that, the sliding member 13 retracts and returns to the standby position,
The woven cloth C passes through the contact point P in a folded state.

Further, as shown in FIG. 2, the sliding member 13 does not necessarily need to be continuously extended over the entire weaving width direction. In the center part and both ends of the empty roll A,
You may make it provide intermittently in a required location.

[0028]

Since the woven cloth is pulled by the sliding member at the time of sliding, looseness of the woven cloth with respect to the empty roll is effectively removed, and the cloth is uniformly wound around the empty roll in the width direction. Moreover, if the end point of sliding of the sliding member is set at least near the contact point between the empty roll and the rotating roller on the downstream side in the winding direction, the looseness of the pulled woven fabric is collected near the contact point. After that, the woven fabric is forcibly folded into two and passes through the contact points, so that the looseness of the woven fabric is completely removed.

[Brief description of drawings]

FIG. 1 is a side view showing an example of a winding device of the present invention.

FIG. 2 is a perspective view showing an example of a loosening mechanism which is a main part thereof.

FIG. 3 is a side view of an essential part showing the operation of the winding device of the present invention.

FIG. 4 is a side view of an essential part showing the operation of the winding device of the present invention.

FIG. 5 is a side view of an essential part showing another example of the operation of the winding device of the present invention.

[Explanation of symbols]

1 rotating roller 2 rotating rollers 3 stand 4 Air injection nozzle 5 cutter 6, 7 Guide roller 8 information board 10 Relaxation mechanism 11 Swing lever 12 rotation spindle 13 Swing member 14 spring 15 Locking piece 16 stopper A empty roll B full roll C woven cloth

   ─────────────────────────────────────────────────── ─── Continued front page       (56) Reference JP-A-2-106543 (JP, A)                 JP-A-2-33353 (JP, A)                 Actual development Sho 63-35752 (JP, U)

Claims (5)

(57) [Claims] 1. Cutting from a full roll so that an empty roll is placed between a pair of front and rear rotating rollers for contact winding of a woven fabric.
After wrapping, the woven fabric edge is guided around the peripheral surface of the empty roll
That the winding means a winding device of a contact winding type equipped with a sliding member that can advance and retreat with respect to the side peripheral surface after the empty roll, the sliding member of the air-rolled by the winding means
Is brought into contact with air rolls over the fabric edge in a state wound around the circumferential surface, and is slid in a large becomes rate than manufacturing <br/> weaving speed toward the upper peripheral surface thereof the winding direction A drive mechanism, and the woven fabric end is emptied with the sliding movement of the sliding member.
Winding than the contact position by sliding on the circumferential surface of the
That comprises a dividing slow mechanism for eliminating slack in the upstream side of the fabric with the fabric winding apparatus in machine cross dots fur, characterized in. 2. The apparatus according to claim 1, wherein the sliding member is elastically biased toward the contact point between the empty roll and the rotary roller on the downstream side in the winding direction. 3. The drive mechanism is driven so that the tip of the sliding member comes into contact with the peripheral surface of the empty roll and immediately moves at a speed higher than the weaving speed. Or the apparatus according to 2. 4. The weaving speed when the tip of the sliding member once comes into contact with the peripheral surface of the empty roll, then moves with the woven fabric at a speed corresponding to the weaving speed, and when the contact position moves to a predetermined position. 3. The device according to claim 1 or 2, wherein the drive mechanism is driven so as to move at a high speed. 5. The drive mechanism is driven so that the sliding member directly advances toward the contact point between the empty roll and the rotary roller on the downstream side in the winding direction.
Or the apparatus according to 2.