JP3390066B2 - Method of winding the starting end of fleece around bobbin in lap forming apparatus and apparatus - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for winding a starting end of a fleece around a bobbin at the beginning of winding a wrap in a lap forming apparatus, and an apparatus therefor.

[0002]

2. Description of the Related Art A lap forming apparatus is provided in a sliver wrap machine and a ribbon wrap machine, and is an apparatus for forming a wrap by winding a belt-shaped fleece around a bobbin. As shown in FIG. 9, the lap forming device A includes a pair of front and rear winding drums each including a front drum 1 and a back drum 2 arranged behind the front drum 1, and the pair of winding drums 1. , 2 and a pair of wrap plates 3 arranged on the sides of the winding drum 1, and the pair of winding drums 1, 1.
The bobbin 4 arranged between the two is composed of a kicking lever 5 for kicking this full lap forward when a full length of the fleece is wound up and becomes full. Then, the bobbin 4 arranged between the pair of winding drums 1 and 2 is gripped by the pair of lap plates 3 arranged on the sides of the winding drums 1 and 2, and the pair of winding drums 1 and 2 is held. The fleece F supplied from the calender roller 6 arranged on the upstream side of the back drum 2 is wound around the bobbin 4 by the drive rotation of 1 and 2 to form a wrap.

When a predetermined length of fleece F is wound up and the wrap reaches the full wrap L, the pair of winding drums 1, 1.
Stop the calender roller 6 while rotating 2
As a result, the fleece F is cut between the back drum 2 and the calendar roller 6. After cutting the fleece, the full lap L is arranged at the lower end of the lever 5 by rotating the kick lever 5 arranged above the lap forming device A from the back drum 2 side to the front drum 1 side. It is kicked forward by the kick roller 7, rolls on the lap guide plate 8, and is discharged from the lap forming device A.

The tip end (lower end) of the kick lever 5
A pair of half-ring-shaped bobbin catchers 9 are attached to the bobbin catcher 9, and the bobbin catcher 9 holds the bobbin 4 for forming the next lap at the stop position where the kick lever 5 is substantially horizontal. , The kick lever 5 is rotated to push the full lap L out of the lap forming device A,
At the same time as the kicking roller 7 attached to the kicking lever 5 pushes out the full lap L, the bobbin 4 is rotated while being held by the bobbin catcher portion 9, and both side surfaces thereof are a pair of lap plates. 3, the lap plate 3 moves downward while holding the bobbin 4 and is placed between the pair of winding drums 1 and 2. When the lap forming device A is activated, the fleece F is compressed by the calendar roller 6 and flows into the lap forming device A, and the bobbin 4
The wrap is formed by winding a predetermined length around the wrap. After the bobbin 4 is clamped by the pair of lap plates 3, the kicking lever 5 pivots backward and returns to a substantially horizontal stop position. As shown in FIG. 9, the upper end portion of the kicking lever 5 is integrally fixed to a horizontal rotating shaft 11, and the rotating shaft 11 rotates forward and backward as the rod 13 of the air cylinder 12 moves in and out. Since the rod 13 of the air cylinder 12 is moved in and out, the kick lever 5 is rotated in the front-rear direction.

Conventionally, in the lap forming apparatus A, the method of winding the starting end of the fleece F around the bobbin 4 is to start the machine base at a low speed operation and to start the high speed operation after a predetermined time has passed, or to start the machine base at a low speed. Let me fleece F
Is spun for a certain length of time, the motor of the machine base is braked and stopped, and after a predetermined time has elapsed after stopping the motor, the machine base is restarted at a low speed. However, in any of the methods, the starting end of the fleece F is rarely immediately wound around the bobbin 4, and the fleece F is bent and doubled to be wound. A technique for solving these problems was proposed in Japanese Patent Application No. 1-253604 (Japanese Patent Laid-Open No. 3-115046).

According to the technique disclosed in Japanese Patent Laid-Open No. 3-115046, in order to discharge the full lap L, it is sprayed on the upper surface of the lap guide plate 8 which is arranged substantially horizontally just in front of the front drum 1 so that The airflow that bounces backward (after being ejected from the blow nozzle 14 and being blown to the lap guide plate 8 in FIG. 9,
Fleece fed from between the front drum 1 and the bobbin 4 by the airflow that bounces toward the rear of the machine base) or the airflow that blows from the front of the machine base toward the rear on the upper outer peripheral surface of the front drum 1. F back drum 2
The fleece F is urged toward the side to facilitate the feeding of the fleece F between the back drum 2 and the bobbin 4 to the front drum 1 side, and at the same time, the fleece fed out from between the front drum 1 and the bobbin 4. The fleece F is easily wound around the bobbin 4 by raising the starting end portion of F.

With this technique, the starting end of the fleece F can be easily gripped between the back drum 2 and the bobbin 4.
When compressed air is ejected to such an extent that the starting end of the fleece F reaches above the bobbin 4, as shown in FIG.
Free from between the calendar roller 6 and the back drum 2.
As the soot F is fed out, the fleece F becomes the back drum 2
And the bobbin 4 and then the starting end of the fleece F fed out from between the front drum 1 and the bobbin 4 is lifted high, and then the fleece F is placed on the upper outer peripheral surface of the bobbin 4. Therefore, the starting end is bent (FIG. 11). Further, the fleece F is not paid out from between the back drum 2 and the bobbin 4, and the fleece F is accumulated between the pair of winding drums 1 and 2 (FIG. 12), and further, the pair of windings. Fleece F from the gap between the take-up drums 1 and 2.
Had caused various problems such as hanging down (Fig. 13). Then, in order to prevent the start end of the fleece F from being lifted high by the jet air flow, when the jet output of the air flow is increased, the start end of the fleece F is disturbed, which adversely affects spinning in the next step. was there.

Further, Japanese Utility Model Laid-Open No. 4-127269 discloses another technique for winding a starting end portion of a fleece on a bobbin. In this technique, a bobbin is provided with a large number of holes communicating with the center hole thereof, and a piston rod of a clamp cylinder for moving a lap plate for gripping the bobbin is provided with a hole communicating with the center hole of the bobbin, The tip of this communication hole is connected to the ring blow. In this technique, when the starting end of the fleece is wound around the bobbin, it can be wound in a state where the starting end is adsorbed to the bobbin, so that double winding is rare. Also,
Although the fleece does not hang down from the gap between the pair of winding drums, not only do many bobbins to be used have to be provided with many holes, but the piston rod also communicates with the center hole of the bobbin. Therefore, a large amount of cost is required for the adoption.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems that occur when the start end portion of the fleece is wound around the bobbin at the start of winding the wrap, and the start end of the fleece is easy to implement. The task is to ensure that the part can be wound around the bobbin.

[0010]

In order to solve the above-mentioned problems, the method adopted by the present invention is such that it is placed on a pair of front and rear winding drums which are rotated in the same direction by a drive motor, and both end surfaces are paired with a pair of wraps. The fleece is wound on the empty bobbin held by the plate for a predetermined length to make a full wrap, the fleece is cut after the machine stand is stopped, and the kick lever whose tip is located above the back drum is rotated forward. Move
While kicking out the full wrap, the bobbin held by the bobbin catcher portion at the tip of the kicking lever is supplied between the pair of winding drums, and then the upper outer peripheral surface of the front drum is moved from the front to the rear. In order to wind the fleece starting from between the front drum and the bobbin by blowing air towards the bobbin, the machine base is restarted, and the fleece is wound around the bobbin. Spray the air flow from bottom to top,
The tip end of the fleece fed out from between the back drum and the bobbin is urged to wind around the lower outer peripheral surface of the bobbin, and the start end of the fleece is transferred to the upper surface of the bobbin if necessary. After that, the tip portion is positioned above the front drum, and the stand-by kicking lever is rotated toward the rear of the machine stand, which is the stop position, and is attached to the lower surface of the bobbin catcher portion of the kicking lever. The fleece rubbing member is transferred to the upper portion of the bobbin and rubs the upper surface of the fleece wound on the bobbin so that the starting end of the fleece is brought into close contact with the bobbin.

[0011]

Simultaneously with the start of the machine stand, the air jetting device arranged below the adjacent portion of the pair of take-up drums is actuated to move the air flow from the lower part to the upper part between the pair of take-up drums. When the fleece is ejected toward the bobbin in this state, the starting end of the fleece is urged toward the bobbin side by the air flow and is brought into close contact with the bobbin. As a result, the fleece smoothly enters between the front drum and the bobbin without accumulating the fleece between the pair of take-up drums or hanging the fleece from the gap. Then, when the start end of this fleece is fed out from between the front drum and the bobbin and reaches almost the same height as the lap guide plate, another air ejection device operates for a set time, and the front drum On the outer peripheral surface of the upper part, an air flow is blown from the front to the rear, and the start end of the fleece fed from between the front drum and the bobbin by the air flow extends from the side surface of the bobbin to the upper surface. It is urged by and is brought into close contact. Simultaneously with the operation of the air ejection device that ejects the air flow from the front to the rear on the outer peripheral surface of the upper part of the front drum, the kick lever that was once stopped at the standby position in front of the machine was moved to the rear of the machine where it was at the stop position. The lever is rubbed toward the upper surface of the bobbin by a friction rubbing member attached to the lower surface of the bobbin catcher portion of the lever. Make sure the start end is wound onto the bobbin.

[0012]

The present invention will be described in detail below with reference to examples. The same parts as those described in the above-mentioned "Prior Art" are designated by the same reference numerals to avoid redundant description.
Only characteristic parts of the present invention will be described. FIG. 1 is a front view of an apparatus according to the present invention for winding the start end of a fleece around a bobbin, and FIG. 2 is a bobbin catcher 9 at the lower end of the kick lever 5 and a fleece rubbing member. FIG. 9 is a perspective view of a portion B, and FIGS. 3 to 8 are operation explanatory views of the present invention. In the present invention, the above-mentioned Japanese Patent Laid-Open No. 3-11
In addition to the blow nozzle 14 mounted directly above the lap guide plate 8 disclosed in Japanese Patent No. 5046, FIG.
As shown in FIG. 2, a blower is disposed below the adjacent portion of the pair of winding drums 1 and 2, and blows an air flow from below to above from between the pair of winding drums 1 and 2. A nozzle 15 is provided.

Further, in the present invention, the kick lever 5
The friction rubbing member B is attached to the lower surfaces of the pair of bobbin catchers 9 provided at the lower ends of the. This fleece rubbing member B has a structure in which a fleece rubbing belt 17 is arranged on the lower surface of the belt support plate 16 with a predetermined slack, and is fastened at the front and rear ends of the belt support plate 16. A bracket 18 attached to the central portion of the belt support plate 16 in the longitudinal direction and a bracket 19 attached to the pair of bobbin catcher portions 9 are screwed together. By changing the screwing positions of both brackets 18 and 19, the position along the height direction of the friction rubbing member B with respect to the pair of bobbin catcher portions 9 and the inclination angle can be adjusted.

When the fleece F is wound on the bobbin 4 for a predetermined length to the full lap L as described above, the machine base is stopped and the pair of winding drums 1 and 2 and the calender roller 6 are stopped.
And both of them are stopped, and then a pair of winding drums 1, 2
Only the fleece F is cut by rotating only the back drum 2 and the calender roller 6. After the fleece F is cut in this manner, the kick lever 5 is moved by the protrusion of the rod 13 of the air cylinder 12 to the position shown in FIGS.
As shown in FIG. 5, the bobbin 4 is held by the pair of bobbin catchers 9 at the lower end thereof, and the bobbin 4 is rotated from the stop position at the rear of the machine base to the standby position at the front thereof. As a result, the full lap L placed on the pair of winding drums 1 and 2 is pushed forward by the kicking roller 7 provided in front of the kicking lever 5 and rolled on the lap guide plate 8. The bobbin 4 is moved and placed on the lap lifter 21 (see also FIG. 9), and the bobbin 4 held by the bobbin catcher portion 9 at the lower end portion of the kicking lever 5 has a pair of wraps on both end surfaces. It is sandwiched by the plates 3. After that, the pair of lap plates 3 descend, and the bobbin 4 held by the lap plates 3 is pressed against the pair of winding drums 1 and 2 in the same state. In addition,
The kicking lever 5 stands by at the standby position at the turning end in front of the machine base.

Subsequently, when the machine frame for new spinning is started at a low speed, as shown in FIG. 5, the pair of take-up drums 1 and 2 rotate at a low speed, and as described above. The starting end portion of the fleece F cut by cutting is transferred on the drum 2 by the rotation of the back drum 2, and is pressed between the pair of winding drums 1 and 2 to the bobbin 4 which is pressed against the drums 1 and 2. It is transferred below the bobbin 4 from between the back drum 2. At the same time when the machine base is started, compressed air is jetted upward from below from a blow nozzle 15 arranged below the portion adjacent to the pair of winding drums 1 and 2, and the compressed air causes the bobbin 4 and The starting end portion of the fleece F fed from between the back drum 2 and the back drum 2 is urged against the lower surface of the bobbin 4 to be in close contact therewith. In this way, since the starting end of the fleece F is urged toward the bobbin 4 by the compressed air from the blow nozzle 15, the fleece F is placed between the pair of winding drums 1 and 2.
The start end of the fleece F smoothly enters between the front drum 1 and the bobbin 4 without accumulating and the fleece F hanging from between the pair of winding drums 1 and 2.

Then, as shown in FIG. 6, the front end of the fleece F which smoothly enters between the front drum 1 and the bobbin 4 on the side of the back drum 2 comes from between the front drum 1 and the bobbin 4. When it is fed out and its starting end is transferred to almost the same height as the lap guide plate 8 (by measuring the spinning length of the fleece F after starting the machine base by converting it into the number of revolutions of the front drum 1). , The start end of the fleece F is automatically transferred to the same height as the lap guide plate 8), and compressed air is blown from the blow nozzle 14 toward the lower lap guide plate 8 for 0.5 seconds. It This compressed air is
As disclosed in Japanese Laid-Open Patent Application No. 3-115046, a part of it hits the plate 8 and bounces toward the upstream side (the rear of the machine base), and the bouncing air flow causes the start end of the fleece F to attach to the bobbin 4. Energize. The compressed air ejected from the blow nozzle 14 is 2.5 kgf / m ² , and the compressed air ejected from the blow nozzle 15 disposed below the adjacent portion of the pair of winding drums 1 and 2 is 5 kgf / m 2. It is weaker than ² and does not disturb the starting end of the fleece F. It is to be noted that the compressed air is ejected from the blow nozzle 15 for 6 seconds after the machine is started, the start end of the fleece F is gripped between the bobbin 4 and the back drum 2, and the fleece F is moved to the bobbin 4. It is jetted until it is completely wrapped around.

At the same time as the compressed air is ejected from the blow nozzle 14, the rod 1 of the air cylinder 12 is ejected.
3 is retracted, and the kick lever 5 rotates from the standby position in front of the machine base toward the rear stop position. As shown in FIGS. 7 and 8, when the kicking lever 5 is rotated rearward, the fleece rubbing belt 17 attached to the lower end of the kicking lever 5 is transferred to the upper surface side of the bobbin 4. -The upper surface of the starting end portion of the space F is rubbed and pressed against the bobbin 4 side to bring the starting end portion of the fleece F into close contact with the bobbin 4, thereby winding the starting end portion of the fleece F around the bobbin 4. To ensure. The surface of the fleece rubbing belt 17 is appropriately rough so that it does not slip against the fleece F, and the fleece F is not disturbed even when continuously pressed. Kicking lever 5 from surface speed
Since the rotation speed of is fast, the starting end of the fleece F can be reliably wound around the bobbin 4.

As described above, the friction rubbing member B is attached to the lower end portion of the kicking lever 5, and when the kicking lever 5 is rotated toward the stop position, it is transferred to the upper surface side of the bobbin 4. By rubbing the upper surface of the formed fleece F, the starting end of the fleece F can be surely brought into close contact with the bobbin 4, but without using the fleece rubbing member B,
The present invention also includes a method of ejecting the air flow from between the pair of winding drums 1 and 2 upward and downward.

[0019]

According to the present invention, an air flow is blown from the front to the rear on the outer peripheral surface of the upper portion of the front drum to raise the start end of the fleece fed between the front drum and the bobbin, In the method of winding on a bobbin, an air flow is blown upward from below between a pair of winding drums, and a fleece rubbing member is attached to the lower end of the kicking lever if necessary, so The starting end of the fleece fed out from between the drum and the bobbin is urged against the lower part of the bobbin by the air flow blown to this part, and the starting end of the fleece is then contacted. When the bobbin is fed out from between the front drum and the bobbin, the tip of the fleece is raised by the air flow blown from the front to the rear of the front drum, The start end portion of the fleece transferred to the upper surface of the bobbin by the fleece rubbing member attached to the lower end portion of the kicking lever is rotated when the kicking lever is rotated rearward so as to facilitate winding. The fleece is rubbed and pressed against the bobbin to bring the starting end of the fleece into close contact with the bobbin. In this way, since the starting end of the fleece is always biased toward the bobbin for transfer, the fleece is transferred along the bobbin without being disturbed and is reliably wound around the bobbin. Further, the present invention is
Freezing is caused by the action of the air flow and the friction rubbing member.
Since the fleece is transported along the bobbin and the fleece is wound around the bobbin while urging the spout on the bobbin, the actual opening is 4-127269.
Unlike the technique disclosed in Japanese Patent Publication, it is not necessary to provide a bobbin with a large number of holes, nor is it necessary to use a bobbin to which a raising material that has been conventionally used is attached. It is possible to wrap it around
It can be implemented at low cost.

[Brief description of drawings]

FIG. 1 is a front view of an apparatus according to the present invention for winding the start end of a fleece around a bobbin.

FIG. 2 is a perspective view of a bobbin catcher portion 9 and a fleece rubbing member B at a lower end portion of a kicking lever 5.

FIG. 3 is an operation explanatory view before a full lap L placed on the pair of winding drums 1 and 2 is kicked out.

FIG. 4 is an operation explanatory view of a state where a kick lever 5 is rotated toward the front of the machine base and a full lap L is kicked out.

FIG. 5 is an operation in a state in which a starting end portion of a fleece F is drawn out from between a back drum 2 and a bobbin 4 and is urged toward the bobbin 4 side by an action of an air flow ejected from below FIG.

FIG. 6 is an operation in a state in which a starting end portion of a fleece F is drawn out from between a front drum 1 and a bobbin 4 and is urged toward the bobbin 4 side by an action of an air flow ejected from the front. FIG.

FIG. 7: While the kicking lever 5 is rotating rearward of the machine base, the starting end portion of the fleece F transferred to the upper surface side of the bobbin is rubbed by the fleece rubbing member B attached to the lower end portion thereof. It is an explanatory view of the operation in the state of being.

FIG. 8 is an operation explanatory view in a state where the kick lever 5 is returned to the stop position.

9 is an overall perspective view of the lap forming device A. FIG.

FIG. 10: The cut fleece F is a calendar roller 6
It is an operation explanatory view before being paid out from.

FIG. 11 is an operation explanatory view showing a state in which the starting end portion of the fleece F fed out from between the front drum 1 and the bobbin 4 is bent by the airflow blown from the front.

FIG. 12 is an operation explanatory view showing a state in which the fleece F is accumulated between the pair of winding drums 1 and 2 and the starting end portion thereof is not paid out from between the front drum 1 and the bobbin 4.

13 is a front view of a front drum 1 of which a free end F hangs down from a gap between a pair of winding drums 1 and 2. FIG.
FIG. 11 is an operation explanatory view of a state in which the bobbin 4 and the bobbin 4 are not extended.

[Explanation of symbols]

A: Lap forming device B: Fleece rubbing member F: Fleece L: Full wrap 1: Front drum (winding drum) 2: Back drum (winding drum) 4: Bobbin 5: Kicking lever 9: Bobbin Catcher part 14: Blow nozzle (air jetting device) 15: Blow nozzle (air jetting device) 16: Belt support plate (fleece rubbing member) 17: Fleece rubbing belt (fleece rubbing member)

Claims (4)

(57) [Claims] 1. A full wrap by winding a fleece for a predetermined length on an empty bobbin which is placed on a pair of front and rear winding drums which are rotated in the same direction by a drive motor and whose both end faces are sandwiched by a pair of lap plates. As a result, the fleece is cut after the machine base is stopped, and the kicking lever whose tip is located above the back drum is rotated forward to kick out the full lap and the tip of the kicking lever. The bobbin gripped by the bobbin catcher part of the above is supplied between the pair of winding drums, and thereafter air is blown from the front to the rear on the outer peripheral surface of the upper part of the front drum to restart the machine base. In the method of raising the starting end of the fleece fed out between the front drum and the bobbin and winding the fleece around the bobbin, an air flow is applied from below between the pair of take-up drums. A method for winding the starting end of the fleece around the bobbin in a lap forming apparatus, characterized in that the tip end of the fleece fed out from between the back drum and the bobbin is wound around the lower outer peripheral surface of the bobbin. . 2. After the starting end of the fleece is transferred to the upper surface side of the bobbin, the kicking lever whose tip is positioned above the front drum and stands by is rotated toward the rear of the machine, which is the stop position. By moving the fleece rubbing member attached to the lower surface of the bobbin catcher portion of the kick lever,
2. The wrap according to claim 1, wherein the fleece transferred to the upper part of the bobbin and rubbed against the upper surface of the fleece is rubbed so that the starting end of the fleece is brought into close contact with the bobbin. A method for winding the starting end of a fleece around a bobbin in a forming device. 3. A pair of take-up drums rotated in the same direction by a drive motor, a pair of lap plates for sandwiching both end faces of bobbins placed on the pair of take-up drums, and a bobbin at a lower end portion. A bobbin catcher portion for gripping the kick drum is attached, and the kick lever is supported rotatably in the front-rear direction about the upper portion of the pair of take-up drums as a fulcrum. And an air ejecting device for blowing air toward the front of the machine, and after the machine base is restarted, air is blown from the air ejecting device toward the front on the outer peripheral surface of the upper portion of the front drum, so that Of the fleece that is fed out between the bobbin and the front drum that are placed between the winding drums of the In order to wind the start end of the fleece around the bobbin in the lap forming device, another air jetting device is provided for blowing the air flow upward from below between the pair of winding drums. apparatus. 4. The lower end of the bobbin catcher portion of the kicking lever is rubbed against the upper surface of the fleece transferred to the upper part of the bobbin and being wound around the upper part of the bobbin so that the starting end of the fleece is moved to the bobbin. 4. A device for winding a start end of a fleece around a bobbin in a lap forming device according to claim 3, wherein a fleece rubbing member is attached for close contact.