JPH05139583A - Cutting and winding device in winder for band-like material - Google Patents

Abstract

PURPOSE:To surely cut and wind a band-like material to be wound, onto an empty bobbin with no crinkling and no burring in a device for repeating the steps of moving a bobbin on which a band-like material has been wound at a wind-up position to a take-out position and moving an empty bobbin to the wind-up position so as to carry out the take-out of the wound material and the wind-up of the band-like material. CONSTITUTION:A retaining roll 28 which approaches a trough 33 formed between a press roll 12 adapted to press the outer surface of a wound material at a wind-up position and a bobbin B is slit into a plurality of roll members 29 which are fitted roatably on an air pipe 25 in an air nozzle pipe 24 having several nozzles 27 for jetting air in a direction in which the leading end of the wound material is laid along the outer surface of the bobbin B in the trough 33. Further, the air nozzle pipe 24 and the retaining roll 28 which are coaxial with a cutting tool 16 can be retracted together to a take-out position for the wound material, outside of a moving area.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention winds a strip on one of a plurality of bobbins arranged around a main shaft to change the position around the main shaft and winds the strip on the next bobbin. A winding device for a winding start end in a winder for winding a strip that repeats the operation of taking out the collected matter together with the bobbin, more specifically, the portion that becomes the start end of the roll is automatically cut into an empty bobbin. The present invention relates to a winding device.

[0002]

2. Description of the Related Art A flexible and long strip of synthetic resin film, cloth, metal foil or the like is wound on a bobbin arranged in parallel with the main shaft at a predetermined position, and then the bobbin which has been wound is set on the main shaft. The bobbin is moved to the take-out position on the center circle and the next bobbin is moved to the predetermined take-up position to perform winding, while the take-up material is taken out from the winder together with the bobbin and is emptied. A winding machine that repeats the operation of supplying a bobbin to process a band into a fixed amount of the wound material is well known.

As described above, when the bobbin is inverted about the main axis and changes its position, the strip extending toward the wound product of the bobbin moved to the take-out position is circled to the empty bobbin moved to the take-up position. It becomes a state in which it is wound around a part of the circumferential direction and is hung on both bobbins, and the front part becomes the end part of the winding and the back part is an empty bobbin. It is the beginning of the roll.

Cutting is carried out by a method of fusing by using a heating wire as disclosed in Japanese Utility Model Publication No. 52-24707 and a cutting blade as disclosed in Japanese Utility Model Publication No. 48-14148. It is carried out by any one of the breaking methods, and as described in the above-mentioned Japanese Utility Model Publication No. 48-14148, surely cuts by cutting the band-like object on the empty bobbin while pressing it with the pressing roll. You can

However, since the starting end portion in front of the pressing portion is in a free state, the winding is impossible unless the starting end portion is overlapped with the inside of the belt-like material wound on the bobbin. Therefore, some attempts have been made to fix the starting end portion to the bobbin using an adhesive agent, but it is necessary to attach the adhesive agent to a predetermined portion of the bobbin, which is troublesome and the starting end portion is adhesively bonded. It is difficult to accurately guide and bond to the. In addition, it is also partly implemented to arrange the air nozzle tube between the press roll and the cutting tool and blow the air on the start end portion to wind the bobbin.
The distance between the presser roll and the cutting tool becomes large and the free end becomes longer, which may make it difficult to wind the wire, or may not be possible with a small winder having a small space. ..

[0006]

SUMMARY OF THE INVENTION The problem to be solved by the present invention is to cut a belt-like object which is bridged between a wound article moved to the take-out position and an empty bobbin moved to the take-up position. The point is that there was no simple means for reliably winding the starting end portion around an empty bobbin.

[0007]

In order to solve the above-mentioned problems, the present invention wraps a strip fed to a bobbin at a winding position, presses the surface of the strip and presses the strip tightly. By utilizing the fact that a pressing roll (touch roll) that works to make the bobbin come into contact with the bobbin close to the valley formed between the bobbin and the pressing roll is used, the pressing roll and the starting end part are made into a valley. The air nozzle tube that blows air in the direction along the bobbin surface of the part is arranged coaxially, and these press roll, air nozzle tube and cutting tool are saved outside the movement area to the take-out position of the roll. It is possible to achieve the purpose of surely winding the start end portion around the empty bobbin with a simple structure.

[0008]

[Function] When the bobbin wound with a certain amount of the band-shaped object moves to the take-out position and the empty bobbin moves to the take-up position, the presser roll at the retracted position moves and comes into contact with the empty bobbin so that the position between the two positions is Appropriate tension is applied to the band-shaped material that is bridged over the belt, and at the same time as this, the pressing roll at the retracted position moves to wind the band-shaped material and press it against the empty bobbin. Next, the cutting tool cuts the belt-like material and ejects air from the air nozzle tube to wind the starting end portion behind the cutting point around the bobbin. The empty bobbin has started to rotate due to winding, and the starting end portion along the bobbin surface in the valley formed by this bobbin and the pressing roll is between the band and the bobbin sent from the pressing roll to the bobbin. Will be sandwiched between.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. A main shaft 2 is horizontally installed on left and right side frames 1a and 1b of a base 1 with both ends rotatably supported. Is intermittently rotated in one direction by 180 degrees by a reversing motor and a transmission mechanism (not shown). Further, the reversing arms 3 and 4 are fixed orthogonally to both ends of the main shaft 2, and the frustoconical support part pieces 5 and 6 face each other at a phase of 180 degrees on a circle centered on the main shaft 2. Each inverted arm 3,
4 is rotatably attached.

A support piece 5 attached to one of the reversing arms 3.
Is rotationally driven in the winding position by a winding motor and a transmission mechanism (not shown). The supporting piece 6 attached to the other reversing arm 4 is moved in the axial direction at the take-out position by a reciprocating prime mover and a transmission mechanism (not shown), and when retracted, the bobbin wound with the wound material is taken out and a new empty space is taken out. The bobbin is replaced with the other bobbin, and the two support pieces 5 and 6 are fitted into both ends of the cylindrical bobbin and supported in parallel with the main shaft 2.

FIG. 2 shows a state in which the strip W is wound on the bobbin B which is rotated at the winding position, that is, on the left side of the main shaft 2, and the strip W is the guide roll 7. Tension roll 8 to two guide rolls 9, 10
After that, the empty bobbin B at the take-out position on the right side of the main shaft 2 is not rotated.

The pressing roll 12 is arranged parallel to the main shaft 2 in the side frame 1.
The weights 14 are rotatably installed on the tip ends of the two pressing arms 13 rotatably supported by the support shafts 11 a and 1 b, and are suspended at the base ends of the pressing arms 13. It is pressed against the surface of the material R to be wound on the bobbin B at the winding position. The first guide roll 9 is rotatably fitted on the support shaft 11, and the second guide roll 10 is the pressing arm 1.
It is erected to rotate freely.

Two cutting arms 15 are rotatably supported on the support shaft 11 side by side with the pressing arm 13, and a rodless cylinder 17 is erected and fixed to the tip end portion of the cutting arm 15 on the tip end side thereof. The push roll 19 is rotatably erected and supported, and the prime mover 2 includes a fluid pressure cylinder 20a.
A zero piston rod 20 b is connected to the cutting arm 15.
A cutting blade 18 is attached to a piston fitted in the rodless cylinder 17, and the cutting blade 18 cuts the strip W by the piston traveling by fluid pressure. The tool 16 is configured.

A rotary arm 21 is rotatably supported on the proximal end side of the cutting arm 15 with respect to the cutting tool 16.
1 is pulled by the spring 22 and stopped at the position where it hits the stopper 23.

An air nozzle tube 24 is provided at the tip of the rotating arm 21.
The air tube 25 is fixedly installed, and a plurality of roll bodies 29 constituting the pressing roll 28 are rotatably fitted and supported on the air tube 25. That is, referring to FIG. 5, a plurality of chamfered flat portions 26 are formed in the air tube 25 at the same phase in the axial direction at appropriate intervals, and the nozzles 27 are projected on the flat portions 26 and fixed in the same direction. The roll bodies 29 are fitted between the nozzles 27 and on both sides of the nozzles 27 at both ends so that the roll bodies 29 are prevented from moving in the axial direction by the stop rings 30. Both ends of the air pipe 25 are closed, and pressurized air is supplied by a hose (not shown) connected to the air supply port 31 and jetted from the nozzle 27.

When the strip W is being wound,
The cutting arm 15 is located above the bobbin B in the winding position and the cutting tool 1
6, push roll 19, air nozzle tube 24, press roll 2
Evacuate 8. When the belt W having a predetermined length is wound up, the pressing arm 13 is rotated clockwise in FIG. 2 by a prime mover (not shown) to retract the pressing roll 12 below the winding material R, and then the spindle 2 is moved. Drive 1 clockwise in Fig. 2
It is rotated by 80 degrees to move the winding material R to the take-out position and move the empty bobbin B to the winding position. At this time, the strip W from the pressing roll 12 to the winding material R is hooked on the empty bobbin B and wound around a part of the outer peripheral surface.

Next, the pressing arm 13 is rotated and raised, and the pressing roll 12 is pressed against the lower surface of the bobbin B at a position slightly closer to the main shaft 2 than the center thereof, and almost simultaneously with this.
1 is rotated and laid down so that the presser roll 28 is brought into contact with the side surface of the bobbin B on the main shaft 2 side in a horizontal plane. The strip W is wound around the pressing roll 28 and the pressing roll 19 to be in a horizontal state between them, and next, in parallel with the main shaft 2, the reversing arm 3,
It engages with the guide roll 32 installed on 4 and reaches the winding material R (FIG. 3).

Referring to FIG. 4 which is an enlarged view of FIG. 3, a valley portion 33 that opens toward the main shaft 2 is formed between the pressing roll 12 and the bobbin B, and the pressing roll 28 approaches this valley portion 33. Then, the strip W is in contact with the bobbin B with the strip W interposed therebetween, and the nozzle 27 of the air nozzle pipe 25 is opened along the surface of the bobbin B forming the valley 33 in the direction of ejecting air.

In such a state, the cutting blade 18
Is run in the width direction of the strip W and cut, and air is ejected from the nozzle 27 to blow the air to the starting end portion behind the cutting point of the strip W, so that the starting end portion extends along the surface of the bobbin B in the valley portion. The bobbin B starts to rotate when it moves to the winding position, and the starting end portion that keeps the state of being wound around the surface of the bobbin B by blowing air passes through the pressing roll 12 as the bobbin B rotates. Since it comes to be sandwiched between the web W fed to the bobbin B and the bobbin B, at this time, the cutting arm 15 is rotated and raised to the state shown in FIG. 2 and the winding is continued.

When the band-shaped material W is pressed against the bobbin B by the pressing roll 28 and cut by the cutting tool 16 and air is blown to wind the start end portion around the bobbin B, the pressing roll 28 is divided into a plurality of roll bodies 29. Since the plurality of nozzles 27 are alternately arranged and supported by the air tube 25, even a wide strip W can be easily cut linearly while keeping the entire width in a substantially uniform tension state. At the same time, the air can be blown substantially evenly over the entire start end portion and can be wound around the bobbin B without causing wrinkles or curling. In this case, since the air nozzle tube 24 and the pressing roll 28 are coaxially arranged without being arranged in front and rear, the cutting tool 16
It is possible to shorten the starting end portion, which is free when cut close to the presser roll 28, so that the bobbin does not cause fluttering when air is blown and therefore does not wrinkle or curl. Make sure that it is wrapped around B.

In this embodiment, two bobbins B are supported on the reversing arms 3 and 4, but three or more bobbins B are supported on a circle centered on the main shaft 2 at equal intervals in the circumferential direction. It goes without saying that the present invention is also applied to other things.

The air nozzle tube 24 and the pressing roll 28 are also provided.
May be directly supported by the cutting arm 15, and the pushing roll 19 may be omitted. Further, the path of the strip W to the pushing roll 12 may be an empty bobbin B during the reversal.
It is arbitrary if it is hung on.

[0023]

As is apparent from the above description, the air nozzle tube for winding the starting end portion of the strip on the empty bobbin and the pressing roll for pushing the strip on the empty bobbin are arranged coaxially. According to the present invention in which the pressing roll is divided into a plurality of roll bodies and a plurality of nozzles of the air nozzle tube are alternately arranged, even if the belt-like material is wide, the plurality of roll bodies make the entire width almost evenly tensioned. It is possible to maintain a stable temperature and make a reliable cut. Also, by blowing air along the bobbin surface of the valley from the air nozzle tube that is close to the valley formed by the bobbin and the pressing roll, and by being able to install the cutting tool close to the pressing roll, cutting The air can be blown almost evenly over the entire start end portion, and the start end portion can be shortened for reliable winding without wrinkling or curling. It can also be implemented as an opportunity.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is the same cross-sectional view as FIG. 2 showing a state when a strip is cut.

FIG. 4 is an enlarged partial view of FIG.

FIG. 5 is a vertical sectional view of an air nozzle tube and a pressing roll.

[Explanation of symbols]

2 spindles, 12 pressing rolls, 16 cutting tools, 24
Air nozzle tube, 25 air tube, 27 nozzle, 28 holding roll, 29 roll body, B bobbin, W strip,

Claims (1)

[Claims] 1. A winding position and a take-out position are set on a circle centering on a main shaft, and when a predetermined amount of a belt-like object is wound around a bobbin at the take-up position, the main shaft is rotated to move to the take-out position. In the winding machine of the band-shaped material that moves the next bobbin to the winding position and winds the material to be wound, the band-shaped material bridged between the bobbins at the both positions is cut and wound around the next bobbin. A cutting and winding device for squeezing; an air nozzle tube provided with a plurality of nozzles in an air tube at axial intervals, and an air nozzle tube that is rotatably fitted and supported by the air tube and is arranged laterally of the nozzle. A press roll composed of a plurality of rolls and a cutting tool for a belt-like material are provided, and the air nozzle tube, the press roll and the cutting tool are provided between a cutting position and a retreat position outside a movement area to a take-out position of a roll. Can be moved integrally, and at the cutting position In this case, the band-like material fed to the bobbin at the winding position is wound around, and the pressing roll comes into contact with the bobbin by approaching a trough formed between the pressing roll and the bobbin that presses against the surface of the wound product. Also, the nozzle is configured to eject air along the bobbin surface of the valley portion;