JPS62146857A - Web roll manufacturing device and web roll manufacturing method - Google Patents

Abstract

PURPOSE:To reduce the degree of wear and make it possible to manufacture two rolls having a uniform length, by cutting off a web winding member from a web by a predetermined length and by winding the same around a spool core for feeding the cut end, and so forth, so that the working of change in winding is continuously and automatically carried out to eliminate a loss in time. CONSTITUTION:In a web wind-up section 20 at a web final wind-up position G, a web wind-up member C onto which a predetermined length of a web B is wound is cut off from the web B. Further, the web exchanging operation such as that the cut end Bb is wound up around a spool core E in a web wind-up section 20 at a spool core supply position F, is automatically made without interrupting the web wind-up operation. Accordingly, it is possible to reduce loss in time, and it is possible to greatly reduce the degree of wear of the device. Further, it is possible to cut the web without stopping the travel of the web, and further, the dispersion of lengths of the articles hardly occurs due to differences in braking time in comparison with conventional methods, thereby it is possible to obtain web rolls having a uniform length.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention involves winding a long web, such as toilet paper, from a raw roll into a web roll of a predetermined small diameter by winding it in predetermined lengths around the rim of a core tube. The present invention relates to a web roll manufacturing apparatus and a web roll manufacturing method for continuously manufacturing web rolls.

(Prior Art) Fig. 12 shows a conventional general web roll manufacturing apparatus, in which a web roll A' is unwound from a web roll A' by a web unwinding device 1'. After the web B' is wound around the core pipe E' by a predetermined length in the web winding section 20', the web unwinding device 1'
and web winding device 2' (two winding rolls 21', 2
1' and one presser roll 24') are suddenly stopped, and the web wound body C' is taken out from the web winding section 20'.
Subsequently, the web B' is cut with a cutter 10' to separate the web wound body C' from the web B', thereby producing a web roll. The cut leading end of the trailing web is then wound around a core tube fed into the web winding section 20' by an appropriate web end winding device such as an air blower. , operation (winding action) is resumed.

However, in this conventional web roll manufacturing apparatus, when separating the web wound body C' from the web B', the web winding action must be interrupted, resulting in a large time loss, and furthermore, the web winding action must be interrupted. Each time B' is cut off, each device (web unwinding device 2', web winding device 2', etc.) must be stopped suddenly, which increases the degree of wear and tear on these devices. The time it takes for the material to come to a complete stop (braking time) may vary and become unstable (for example, if the diameter of the material roll changes, there will be a difference in the penetrating force during braking, making this variation likely to occur). There have been problems such as variations in the length of the web of the manufactured web rolls due to variations in the braking time.

In the manufacturing industry for this type of web roll, when manufacturing a small web roll from a raw roll, the web is continuously rewinded (i.e., web cutting and web tipping are performed without interrupting the web winding action). It is hoped that a so-called non-stop web roll manufacturing device will emerge that can perform operations such as winding around the outer circumference of a core tube, but at present there is no non-stop web roll manufacturing device that can actually be used. is not found.

(Object of the Invention) In view of the above-mentioned circumstances, the present invention has been developed to produce a web roll with high production efficiency, with less wear and tear on each device, and with less variation in web length per product. The purpose of this study was to propose an apparatus and a method for manufacturing web rolls.

(Means for Achieving the Object) The web roll manufacturing apparatus of the present invention includes a web unwinding device for unwinding a web from a raw roll and two take-up rolls installed adjacent to each other. At least two or more web winding sections capable of winding the web around the core tube are provided, and each of the web winding sections has a core tube supply position where the core tube is supplied and a core tube supply position where the core tube is supplied. a web winding device that is movable between a final web winding position that is spaced apart by an appropriate distance on the downstream side in the web running direction and a final web winding position where a predetermined length of web is finally wound; and the core tube supply position. a core tube supply device for sequentially supplying the core tubes one by one to the web winding section located at the web winding section; a web winding section transfer device, and immediately after a predetermined length of web is wound around the core tube at the final web winding position;
High-pressure air is momentarily blown toward the web running surface between the core pipe supply position and the web final winding position to remove the web wound body formed at the web final winding position while the web is running. An air cutter-type web cutting device capable of separating the web from the web, and an air suction device capable of sucking air in the core tube supplied to the web winding section at the core tube supply position, By suctioning air into the core tube from the air suction hole previously formed in the peripheral wall of the core tube by the air suction device, the tip of the trailing web immediately after being cut by the web cutting device is attached to the outer surface of the core tube. The present invention is characterized in that it is equipped with a web tip winding device that winds the trailing side web tip around the core tube by adsorbing the vicinity thereof.

Further, the web roll manufacturing method of the present invention uses the above-described web roll manufacturing apparatus, and after winding the web tip around the core tube in the web winding section located at the core tube supplying position, the web tip winding is performed. The web winding section with the attached core tube is transferred to the final web winding position by the web winding section transfer device, the web winding action is performed at the final web winding position, and then the web winding section is moved to the core tube supplying position. A core tube with air suction holes was supplied by a core tube supply device into the newly transferred empty web winding section, and then a predetermined length of web was wound around the core tube at the final web winding position. Immediately after, while the web is running continuously, an air cutter-type web cutting device cuts the running web to separate it from the web winding body, and at the same time, the air suction device of the web tip winding device cuts the web. The leading edge of the trailing web is wrapped around the core tube.

(Function) The present invention provides an operation for separating a web wound body in which a web of a predetermined length is wound in a web winding section at a final web winding position from the web, and after the web is cut, by the above-mentioned means. Operations for rewinding the web, such as winding the web end of the row side around the core tube at the web winding unit located at the core tube supply position, can be performed without interrupting the web winding operation (the entire manufacturing equipment This can be done automatically (while the machine is running continuously).

(Embodiment) A preferred embodiment of the present invention will be described with reference to FIGS. 1 to 11. The web roll manufacturing apparatus of this embodiment includes:
It is equipped with a web unwinding device 1 for unwinding web B from a raw roll A, and a total of three web winding sections 20 capable of winding web B around a core tube E, and each web winding section. 20, 20.20 are spaced apart from the core tube supply position F where the core tube E is supplied by an appropriate distance from the core tube supply position F on the downstream side in the web running direction, and are finally wound up with a predetermined length of web. A web winding device 2 configured to be movable between a final web winding position G, a winding roll drive device 3 for rotating each winding roll (described later) of the web winding device 2, and a core A large number of core tubes E, E... housed in the hopper 50 in the web winding section 20 at the tube supply position F.
a core tube supplying device 5 for sequentially supplying the core tubes one by one; a core tube drilling device 11 for sequentially drilling air suction holes H in the peripheral wall of the core tube E in the middle of the core tube supplying device 5; A web winding unit transfer device 4 for sequentially and intermittently circulating and transporting each web winding unit 20, 20, 20 between a core tube supply position F and a final web winding position G, and a web winding unit 20.
First and second six presser rolls 24 and 25 for pressing the web wound body C from above, and the first presser roll 24 from the core tube supply position F to the web final winding position G as described later. A first presser roll transfer device for reciprocating within the range of
an air cutter-type web cutting device 6 for separating the web B from the web wound body C while the web is running; The web tip is equipped with an air suction device 71 that can be used for winding the web tip Bb around the core tube E by adsorbing the web tip Bb to the outer surface of the core tube E by the suction action of the air suction device 71. A winding device 7 and a web roll for transporting the web roll D discharged from the web final winding position G to the post-process side (for example, the log cutting device side for cutting a long web roll into product dimensions) The transfer device 13 is configured to include a transfer device 13.

The web unwinding device 1 has an endless belt 19 that is circulated at the same speed as the circumferential speed of each winding roll (described later) of the web winding device 2. By circulating the web B while making contact with the web B, the web B can be continuously fed out from the raw roll A at a constant speed.

This web unwinding device 1 is provided with a counter device 10 that detects the length of the web B that is unwound from the original fabric roll A.

The web winding device 2 has a total of three winding rolls 21 and 22.
．． It has 23. These three winding rolls 21, 22
．． 23, each shaft 111, 121, 131 is arranged so as to be located at each vertex of an equilateral triangle, and each shaft 111, 121, 131 is rotatably supported on a pair of left and right support plates 26, 26. It has been positioned. In addition, both support plates 26.26 rotatably support central shafts 27 provided at their respective centers (the centers of the three take-up rolls 21, 22, 23) on both side walls 18, 18 of the machine body. It is attached between the two side walls t s and t s by doing this. Therefore, each winding roll 21, 22.23 can rotate on its own axis relative to the support plate 26.26, and can also revolve around the central axis 27.

Further, the three winding rolls 21, 22, 23 are designed so that their respective outer circumferential surfaces are close to each other with a predetermined small interval (an interval slightly smaller than the outer diameter of the core tube E). A valley-shaped web winding portion 20 is formed between each of the two winding rolls.

The take-up rolls 21, 22, and 23 can be rotated by the take-up roll driving device 3 at the same speed and in the same direction (clockwise rotation direction in each figure). That is, this winding roll drive device 3 has a motor 31
The power is transmitted to each shaft 1 of each winding roll 21, 22.
Sprocket 112 fixed to 11, 121, 131,
122.degree. 132, thereby making it possible to rotate each of the rolls 21, 22, 23 at the same time.

Further, the three web winding sections 20, 20, 20 are sequentially and intermittently transferred by the web winding section transfer device 4 at an angle of 120 degrees in the clockwise rotation direction (downward side in the web running direction). ing.

That is, the web winding section transfer device 4 is configured such that a sprocket 42 fixed to the center shaft 27 via a chain wheel can be intermittently rotated by an angle of 120 degrees by a motor 41. Each web winding section 2
0,20.20 can be transferred. still,
As will be described later, the operation of the web winding section transfer device 4 is such that after the web tip is wound around the core tube E, the motor 41 is rotated by a predetermined number of rotations per time, for example, in response to a signal from the counter device 10. It is done by

When the web winding unit transfer device 4 is not in operation, each of the winding rolls 21, 22, 23 of the web winding device 2 is positioned such that one winding roll is located diagonally below both the left and right sides of one winding roll. It is arranged so that Therefore, each 2
Three web winding sections 20 formed between two winding rolls
, 20. 20 is for each left and right upper (2 locations) and lower (1 location)
They will be formed toward each location. In addition, in this embodiment, the position of the web winding part 20, which is formed diagonally upward on the left side in FIG. The position of the web winding section 20 becomes a final web winding position G, which will be described later.

115= Each winding roll 21, 22.23 has the same structure, and inside each winding roll 21, 22.23 there is an air passage 30 that constitutes a part of the web cutting device 6, which will be described later.
are formed respectively. Since each of the winding rolls has the same structure, only the winding roll indicated by 21 will be explained. In this winding roll 21, one end of its shaft 111 is hollow (113). Further, a passage portion 114 communicating with the hollow portion 113 is formed inside the roll portion 110. Further, in the roll part 110, a large number of small holes (for example, about 1 mm in diameter) 115, 115, etc. are formed at small intervals (for example, 1+ nm) in communication with the passage part 114 and over almost the entire length of the roll part 110.
They are formed in a line-shaped manner with an interval (interval) between them. Therefore,
When high-pressure air is blown into the hollow part 113 of the shaft 111, the high-pressure air passes through the passage part I14 and passes through a large number of small holes 115-.
115... will be vigorously ejected toward the outside of the roll section 110. This air jet action will be explained in detail in the description of the web cutting device 6, which will be described later.

=16- The first presser roll 24 is for pressing the web wound body C grown within the web winding section 20 at the core tube supply position F or the web final winding position G from the outside. . This first presser roll 24 is connected to the central shaft 27
The first presser roll 24 is supported by a mounting base 36 that is swingably provided around the mounting base 36 .
The air cylinder 38 supported by the web winding section 2
It can be moved inward and outward directions of 0. That is, when the air cylinder 38 is in the fully contracted state, the first presser roll 24 is pushed far outside the web winding section 20 as shown by the solid line in FIG. 1, and when the air cylinder 38 is in the fully extended state As shown by the chain line 24', the web enters inward to a position where it can come into contact with the outer circumferential surface of the core tube E fed into the web winding section 20, and then gradually moves outward as the web wound body C grows. It is supposed to move.

The first presser roll 24 is made to reciprocate between the core tube supply position F and the final web winding position G by the first presser roll transfer device 12. This first
The presser roll transfer device 12 includes a motor that is rotatably mounted around a central shaft 27 and is capable of forward and reverse rotation via a chino sprocket 46 that is integrally fixed to the mounting base 36 of the first presser roll 24. 45 in the forward or reverse direction by a predetermined angle range, the first presser roll 24 is caused to reciprocate.

The rotation angle range of the first presser roll 24 by the first presser roll transfer device 12 is determined by the rotation angle range of the first presser roll 24 when the first presser roll 24 is transferred to the final web winding position G side, Second presser roll 2 at winding position G
5, the angle range (1
20°) is set to a slightly smaller angle range (approximately 110°). Note that the rotation angle range of the first presser roll 24 by the first presser roll transfer device 12 is such that the motor 45 is
This is done by rotating in the forward or reverse direction by a predetermined number of revolutions per rotation. Incidentally, the operation timing of this first presser roll transfer device 12 will be explained in detail later.

The second pressing roll 25 is for pressing the web wound body C grown in the web winding section 20 at the final web winding position G from the outside, and is used to hold the web wound body C grown in the web winding section 20 at the final web winding position G from the outside. It is adapted to be moved inward and outward directions of the web winding section 20 located at the take-up position G. The second presser roll 25 is connected to the air cylinder 4
8 is extended (the position shown by the solid line in FIG. 1), it is far away from the web winding section 20, and the air cylinder 48
In the contracted state (the position shown by the chain line in FIG. 1), it comes into contact with the outer peripheral surface of the web wound body C grown within the web winding section 20. The timing of expansion and contraction of the air cylinder 48 for the second presser roll 25 will be described in detail later.

The first presser roll 24 and the second presser roll 25
As shown in FIG. 7, relatively short (long) rolls 24b are attached to each shaft 24a, 25a, respectively.

25b are attached at intervals M slightly larger than the length of the roll, and as described later, the web wound body C is installed at the final web winding position G.
When transferring pressure from the first presser roll 24 to the second presser roll 25, each of the short and small rolls 24b and 25b of both presser rolls 24 and 25 fit into the space of the other presser roll, and the two presser rolls 24 and 25 are pressed down. This prevents the presser rolls 24, 25 from colliding with each other.

The core tube supply device 5 includes a first core tube supply device 51 for sequentially supplying the core tubes E one by one from a hopper 50 accommodating a large number of core tubes E to a core tube extrusion preparation position J; It has a second core tube supply device 52 for feeding the core tube E at the core tube extrusion preparation position J into the web winding section 20 at the core tube supply position F.

The first core tube supply device 51 includes a drum 54 having four core tube insertion spaces 55, 55, etc. formed at equal intervals on the outer circumferential surface in the middle of the core tube passage 53, and the drum 54. motor 5
6 so that it can be rotated intermittently by an angle of 45 degrees. The first core tube supplying device 51 supplies the core tubes E7 in the upper core tube passage 53a into the cavities 55 when the cavities 55, 55, . . . of the drum 54 are positioned upwardly.
When only 141 core tubes are dropped and fitted, and the drum 54 is further rotated to position the core tube insertion cavity 55 downward, the core tube E in the cavity 55 passes through the lower core tube passage 53b. It is supplied to the core tube extrusion preparation position J.

The second core tube supply device 52 includes a pedestal 57 for supporting the core tube E at the core tube extrusion preparation position J, and an air cylinder 58 for extruding the core tube.

When the air cylinder 58 is extended (see Fig. 9),
The core tube E at the core tube extrusion preparation position J can be pushed into the web winding section 20 at the core tube supply position F by a roller 59 provided at the tip of the cylinder rod.

This air cylinder 58 connects the core tube E to the web winding section 2.
0, and then the first presser roll 24 presses the core tube E.
Zoom out after pressing . When the air cylinder 58 is extended, the pedestal 57 moves forward together with the cylinder rod, but as shown in FIG.
It is stopped at a position where it has been advanced to a position immediately adjacent to the traveling position, and from then on, only the cylinder rod moves forward.

The core tube drilling device 11 includes an air cylinder 9■ and a drilling needle (about 5 mm in diameter) 9 provided at the tip of the cylinder rod.
2. Two sets of the core tube drilling devices 11 are used in this embodiment, and are arranged so as to correspond to positions near both ends of the core tube E fitted into the cavity 55 of the drum 54 on the side of the drum 54. They are set up separately. And each core tube drilling device If is,
When the air cylinder 91 is extended, the needle 92 is moved to a position near both ends of the core tube E in the cavity 55 of the drum (5c from the end surface of the core tube).
Air suction holes H, H each having a predetermined diameter (approximately 5 mm) can be drilled at positions within m). The reason why the air suction holes H are made only at positions near both ends of the core pipe E is that the web rolls manufactured by this web roll manufacturing apparatus are used in the subsequent process to adjust the dimensions of final products such as toilet paper. When cutting,
The perforated portion of the core tube E is located within the range that is commonly called the ear and is to be removed and discarded, and is intended to prevent the core tube in the product from having a perforated portion.

In this embodiment, a core tube hole punching device 11 is incorporated into the web roll manufacturing apparatus to sequentially drill air suction holes in the core tube when supplying the core tube. However, in other embodiments, It is also possible to house a core tube in which air suction holes are previously drilled at positions near both ends of the core tube in the hopper 50, thereby omitting the core tube punching device 11 from the web roll manufacturing apparatus.

An air suction device 71 is used in the web end winding device 7. A pair of left and right intake port members 73.73 brought into close contact with E a and E b, respectively, and each intake port member 73.7.
It has a blower device 72 for sucking air from 3. The pair of left and right intake port members 73.73 are connected to air cylinders 74.73, respectively. ．． The air cylinders 74 and 74 are attached to the tip of the rod so that they can be brought into contact with or separated from the opening edges Ea and Eb at both ends of the core tube E at the same time by expanding and contracting the air cylinders 74 and 74.

The intake port member 73 has a tip portion 73b that is rotatable with respect to a base portion 73a (the side fixed to the cylinder rod), and a tip portion 73b thereof is rotatable relative to a base portion 73a (the side fixed to the cylinder rod). The interior a and the interior of the tip side portion 73b are continuous in a sealed state by a rotary seal structure. The front end portion 73b of the suction port member 73 comes into contact with the opening edge of the core tube E rotated within the web winding section 20 and rotates with the core tube E. When the air cylinders 74.74 are extended, the distal end surface of the intake port member 73.73 comes into contact with the opening edges Ea and Eb at both ends of the core tube E in the web winding section 20, thereby opening the opening edges Ea and Eb at both ends. Closed and air cylinder 74
．． When '74 is reduced, the intake port member 73.73 retreats (
(separated from the opening edges Ea, E, b at both ends), and the entire web winding device 2 becomes rotatable. The web tip winding device 7 operates a solenoid valve in response to a signal from, for example, the counter device 10, while the tip surfaces of the intake port members 73, 73 are in contact with the opening edges Ea, Eb at both ends of the core tube E. 75 is switched to the ON side, the air in the core pipe E is sucked through the suction port member 73 by the air suction action from the blower device 72 (external air passes through the air suction holes H, H). The web (web tip) is thereby attracted to the positions where the air suction holes H, H are formed on the outer peripheral surface of the core tube E. Since the core tube E is being rotated at this time, the web tip adsorbed to the outer surface of the core tube E is wound around the core tube E as it is. In addition, when the web is attracted around the core tube E during the air suction action inside the core tube E, the degree of vacuum inside the core tube E becomes too large, causing trouble (for example, the core tube becomes dented). In order to prevent this, a pressure regulating valve 76 is provided between one intake port member 73 and the blower device 72 in this embodiment. Incidentally, the expansion/retraction timing of the air cylinders 74, 74 and the switching timing of the solenoid valve 75 will be described later.

The web cutting device 6 is configured as an air cutter as shown in FIG. 2, and has a take-up roll (numeral 21 in FIG. Hollow part 113 in the shaft 111 of the take-up roll
Air inlet member 61 disposed opposite to the outside of the shaft end on the side having
, a blower device 72 for supplying high-pressure air to the air inlet member 61 (in this embodiment, it is shared with the blower device of the web tip winding device 7), and a blower device 72 for supplying high pressure air to the air inlet member 61; an air cylinder 62 for contacting and moving away from the hollow mouth edge 113a; and the winding roll 21.
Air passage 30 and numerous small holes 115, 11 formed inside
5... Similar to the intake port member 73, the air supply port member 61 is divided into a base side portion 61a and a tip side portion 61b.The base side portion 61a is fixed to the tip of the rod, and the tip side portion 61b is fixed to the base side. It is rotatably connected to the portion 61a. Also, the base side portion 61a
The inside of the tip portion 61b and the inside of the tip side portion 61b are continuous with each other in a sealed state by a rotary seal structure. When the air cylinder 62 is extended, the distal end surface of the air supply port member 61 comes into contact with the hollow rim 113a of the hollow shaft III.
When the air cylinder 13a is sealed and the air cylinder 62 is contracted, the air inlet member 6I separates from the hollow rim 113a, and the entire web winding device 2 becomes rotatable. The web cutting device 6 is operated by a counter device 10 that measures the length of the web unwound from the raw roll A while the tip end surface of the air inlet member 61 is in contact with the mouth edge 113a of the hollow portion 113. When the solenoid valve 63 is switched to the ON side by the signal, high-pressure air from the blower device 72 passes through the air supply port member 61 and the air passage 30 in the take-up roll, and enters the numerous small holes 115,
115..., and the web B wound around the outer peripheral surface of the take-up roll 21 can be cut by the ejected air.

The web roll transfer device 13 includes a first conveyor 81 for receiving and transporting the web roll D discharged from the web winding section 20 at the final web winding position G, and a continuous conveyor 81 at the end of the first conveyor 81. The first conveyor 81
It has a second conveyor 82 for transferring the web roll D being transferred thereon to the next process, such as the log cutting device side.

Further, above the first conveyor 81, there is a web roll D that is discharged from the final web winding position G while rotating vigorously.
A friction plate 83 is provided for contacting and stopping the rotation.

Next, by explaining the operation order and function of each device of this web roll manufacturing apparatus, the web roll manufacturing method will also be explained.

First, when this web roll manufacturing apparatus is operated for the first time, the leading end of the web B that has been wound around the raw roll A in advance is placed around the core tube E in the web winding section 20 located at the core tube supply position F. After winding only a few ends, the air cylinder 38 is extended to press the first presser roll 24 against the core tube E side, as shown in FIG.

After the above preparation work is completed, the switch is turned on to start the operation of the entire manufacturing device, and the web unwinding device 1,
The device = 28- such as the take-up roll drive device 3 is operated, and the web unwinding action by the web unwinding device 1 and the web winding action by the web winding device 2 are performed simultaneously, and the core tube is at the core tube supply position F. The web B comes to be wound around the core tube E at a certain web winding section 20.

Then, in the web winding section 20, a web B of a predetermined length (for example, 1/2 of the final winding length) is wrapped around the core pipe E.
At the time when the web is wound (for example, when the web has grown to the size indicated by the symbol C' in FIG. 4), the first signal is emitted from the counter device 10. While the web winding action continues, the web winding unit transfer device 4 and the l-th presser roll transfer device 12 are operated simultaneously, and as shown in FIG. The web-wound body C being rotated to the right by an angle of 120 degrees around the center is transferred to the final web-winding position G, and at the same time, the mounting base 36 is also rotated around the central axis 27. The first presser roll 24 is rotated clockwise by an angle of 110°.
The web is also transported to the final web winding position G. In addition, the web wound body C moves from the core tube supply position F to the web final winding position G.
Since the web is always held by the two take-up rolls 21 and 22 and the first presser roll 24 while being transferred to the web take-up unit 20, it does not fall off from the web take-up unit 20.

The web wound body C transferred to the web final winding position G is
It continues to grow there, but at the time when the web B having a length of, for example, 3/4 of the final winding length is wound up at the final web winding position G, the counter device IO sends a second signal. The second signal causes the operation air cylinder 48 of the second presser roll 25 to contract, and as shown in FIG. At the final winding position G, it comes into contact with the outer peripheral surface of the growing web wound body C. Incidentally, at this time, the first presser roll 24 and the second presser roll 25 do not collide with each other as shown in FIG. 7. At that time, the air cylinder 48 for the second presser roll 25 operates the limit switch 49, and the first presser roll 2 is operated by the signal from the limit switch 49.
The air cylinder 38 for No. 4 is contracted and the first presser roll 24 is separated from the web roll C. In this state, the web wound body C at the final web winding position G is held by the two winding rolls 21 and 22 and the second presser roll 25. Then, the first presser roll 24
When the air cylinder 38 is contracted, it is detected by a limit switch, for example, and the motor 45 of the first presser roll transfer device 12 is rotated in the reverse direction based on the signal, and the mounting base 36 and the first presser roll are 24 is returned to its initial position as shown in FIG.

On the other hand, during the above operation, the core tube hole punching device 11 operates to drill air suction holes in the peripheral wall portions of the core tube E fitted in the cavity 55 located laterally on the drum 54 at positions near both ends of the core tube E. H, H are drilled, and then the first core tube supply device 5I
is operated, and the core tube E with the air suction hole H is supplied to the core tube extrusion preparation position J (FIG. 5).

Then, just before the product length web B is wound up at the final web winding position G (for example, 2 to 3 seconds before), for example, the mounting base 36 is returned to its original position (the position shown in FIG. 8). The air cylinder 58 of the second core tube supply device 52 is extended by a signal from a limit switch or the like that is operated at the time, and as shown in FIG. Web winding section located at tube supply position F (formed between winding rolls 23 and 21)
At the same time as it is pushed into the web winding section, the air cylinder 38 for operating the first presser roll is extended so that the first presser roll 24 presses the core tube E. When the core tube E is held by the two take-up rolls and the first presser roll, the air cylinder 58 of the second core tube supply device 52 is contracted. Note that the new core tube E pushed into the web winding section 20 at the core tube supply position F contacts the continuously running web B and rotates at that location.

Further, just before the final winding of the web wound body C at the final web winding position G, for example, the first presser roll 24
Each air cylinder 74, 74 of the web end winding device 7 and the air cylinder 62 of the web cutting device 6 are respectively extended by a signal from a limit switch or the like that detects that the operating air cylinder 38 has been extended. Winding is performed in which the tip surfaces of the intake port members 73 and 73 respectively close the opening edges at both ends of the core tube E, and the tip surface of the air supply port member 61 is located between the core tube supply position F and the web final winding position G. The hollow rim 113a of the shaft I11 of the roll 21 is closed. In addition, the core tube supply position F and the final web winding position G
The web B runs under tension on the outer peripheral surface of a take-up roll 21 located between the two.

Next, the counter device IO unwinds the web B from the raw roll A by the length of the final product (web B having the length of the final product is wound around the core tube E at the web final winding position G). ), the third signal is emitted from the cough counter device 10, which turns on the solenoid valve 75 of the web tip winding device 7 and the solenoid valve 63 of the web cutting device 6 almost simultaneously. (Solenoid valve 75 on the web end winding device 7 side is replaced with solenoid valve 6 on the web cutting device 6 side.
3), air is sucked into the core tube E by the air suction action of the blower device 72, and the air inside the take-up roll 21 is Air is forcefully blown out from a large number of small holes 115, 15, etc. provided in the roll part 110 through the air passage 30. Then, as shown in FIG. 10, when the large number of small holes 115, 115, .
Air is vigorously jetted from 15... toward the running surface of the web B, thereby cutting the web B instantaneously, and at the same time, the web is cut by the air suction hole H1H provided in the core tube E. The vicinity of the web tip Bb on the trailing side is attracted, and then the core tube E is rotated, so that the web tip Bb is wound around the core tube E. The web cutting device 6 has small holes 115, 11
Immediately after the high-pressure air blowing action starts from 5..., the solenoid valve 63 is turned OFF by a signal from, for example, a timer device (for example, after about 0.5 seconds have elapsed).
2, the air blowing action from the small holes 115, 115, etc. is immediately stopped, and then the air cylinder 62 is contracted and the air supply port member 61 is retreated. Further, in the web end winding device 7, after the web end Bb is wound around the core tube E, the solenoid valve 75 is switched to the OFF side by a signal from, for example, a timer device, and then each air cylinder 74° is turned off. 74 is contracted and each inlet member 73.7'3 is moved back. Incidentally, the cut trailing end Ba of the preceding web is wound as it is around the outer periphery of the web wound body C at the final web winding position G.

When the web roll D is formed at the final web winding position G, the air cylinder 48 for operating the second presser roll is extended by a signal from, for example, a timer device, and the second presser roll 25 is Roll D
The web roll D is then released onto the first conveyor 81. Note that the web roll D discharged onto the first conveyor 81 comes into contact with the friction plate 83 to stop its rotation, and is transferred to a subsequent process by the first conveyor 81 and the second conveyor 82.

This web roll manufacturing device is designed to repeat the above operations continuously, and therefore can perform non-stop operations such as web cutting and web tip winding, which were conventionally performed by interrupting operation. At the same time, there is no variation in the web winding length of the manufactured web roll D. A web roll C in which a predetermined length of web B is wound in section 20
For web rewinding, such as an operation of separating the trailing web tip Bb from the web B, and an operation of winding the cut trailing side web tip Bb around the core tube E at the web winding section 20 located at the core tube supply position F. The operation can be carried out automatically without interrupting the web winding action (the entire production equipment remains in continuous operation), thus eliminating time losses during web rewinding and eliminating the need for conventional web cutting. Compared to the case where the entire device suddenly stops at each time, the degree of wear and tear on each device is significantly reduced, and the service life can be extended.
In addition, since the web can be cut non-stop, there is no variation in product length due to braking time differences, which is the case when cutting the web by stopping the entire machine, and rolls of web of uniform length can be cut. This has the effect that it is possible to manufacture.

[Brief explanation of drawings]

FIG. 1 is an overall schematic diagram of a web roll manufacturing apparatus according to an embodiment of the present invention, and FIGS. 2 and 3 are respectively
-■ and ■-■ cross-sectional views, Figures 4 to 6 are respectively state change diagrams of the web roll manufacturing apparatus of Figure 1, and Figure 7 is the first presser roll in the web roll manufacturing apparatus of Figure 1. A perspective view showing the shape of the second presser roll, FIGS. 8 to 11 are state change diagrams of the web roll manufacturing apparatus of FIG. 1, and FIG. 12 is a schematic diagram of the conventional web roll manufacturing apparatus. . l... Web unwinding device 2... Web winding device 3... Winding roll drive device 4... Web winding section transfer device 5... Core Pipe supply device 6...Web cutting device 7...Web tip winding device 11...Core tube hole punching device 12...First presser roll transfer device 20...Web winding Take-up section 21, 22, 23... Take-up roll 24... First presser roll 25... Second presser roll 71... Air suction device A... Original fabric roll B...Web Bb...Web tip C...Web winding body D...Web roll E...Core tube F...Core tube supply position G... Web final winding position H... Air suction hole section Q) -ri CA-

Claims (1)

[Claims] 1. A web unwinding device (1) for unwinding a web (B) from a raw roll (A), and two winding rolls (21, 22 or 23) installed adjacent to each other. ), each web winding part (20) is provided with at least two or more web winding parts (20) formed between the core tube (E) and capable of winding the web (B) around the core tube (E). A core tube supply position (F) where the core tube (E) is supplied and an appropriate distance away from the core tube supply position (F) on the downstream side in the web running direction, and finally a web of a predetermined length is wound up. Web final winding position (G
) A web winding device (2) that is movable between
and the web winding section (20) located at the core tube supply position (F).
) for sequentially supplying the core tubes (E) one by one to a web winding section transfer device (4) for sequentially circulating the web between the two, and a web (B) of a predetermined length is wound around the core tube (E) at the final web winding position (G). Immediately after this, high-pressure air is momentarily blown toward the web running surface between the core tube supply position (F) and the final web winding position (G) to keep the web (B) running and to remove the web. Final winding position (
The web wound body (C) formed in the web (G) is
An air cutter-type web cutting device (6) that can be separated from the core tube (E) and the core tube (E) supplied to the web winding section (20) located at the core tube supply position (F). The air suction device (71) is equipped with an air suction device (71) capable of suctioning air into the core tube (E) from an air suction hole (H) formed in advance on the peripheral wall of the core tube (E). By suctioning air to the outer surface of the core tube (E), the vicinity of the leading edge (Bb) of the trailing side web immediately after being cut by the web cutting device (6) is attracted to the outer surface of the core tube (E), thereby cutting off the trailing side web. A web roll manufacturing apparatus comprising a web tip winding device (7) capable of wrapping the tip (Bb) around a core tube (E). 2. A web unwinding device (1) for unwinding the web (B) from the raw roll (A) and two take-up rolls (21, 22 or 23) installed adjacent to each other. At least two or more web winding sections (20) capable of winding the web (B) around the core tube (E) are provided, and each of the web winding sections (20) is arranged such that the core tube (E) is A web final winding position (F) that is spaced apart from the core pipe supply position (F) by an appropriate distance on the downstream side in the web running direction and where a predetermined length of web is finally wound. G
) A web winding device (2) that is movable between
and the web winding section (20) located at the core tube supply position (F).
) for sequentially supplying the core tubes (E) one by one to a web winding section transfer device (4) for sequentially circulating the web between the two, and a web (B) of a predetermined length is wound around the core tube (E) at the final web winding position (G). Immediately after this, high-pressure air is momentarily blown toward the web running surface between the core tube supply position (F) and the final web winding position (G) to keep the web (B) running and to remove the web. Final winding position (
The web wound body (C) formed in the web (G) is
An air cutter-type web cutting device (6) that can be separated from the core tube (E) and the core tube (E) supplied to the web winding section (20) located at the core tube supply position (F). The air suction device (71) is equipped with an air suction device (71) capable of suctioning air into the core tube (E) from an air suction hole (H) formed in advance on the peripheral wall of the core tube (E). By suctioning air to the outer surface of the core tube (E), the vicinity of the leading edge (Bb) of the trailing side web immediately after being cut by the web cutting device (6) is attracted to the outer surface of the core tube (E), thereby cutting off the trailing side web. A web roll manufacturing apparatus equipped with a web end winding device (7) capable of winding the leading end (Bb) around the core tube (E) is used to take up the web at the core tube supply position (F). After wrapping the web tip (Bb) around the core tube (E) in the section (20), the web tip (Bb) is wrapped around the core tube (E).
) is transferred to the final web winding position (G) by the web winding part transfer device (4), and the web winding action is performed at the final web winding position (G). Then, the core tube (E) with the air suction hole (H) is supplied by the core tube supply device (5) into the empty web winding section (20) newly transferred to the core tube supply position (F). Then, immediately after a predetermined length of web (B) is wound around the core tube (E) at the final web winding position (G), air is applied while the web (B) is continuously running. A running web (
At the same time, the air suction device (7) of the web tip winding device (7)
A method for manufacturing a web roll, characterized in that the leading end (Bb) of the trailing web cut in step 1) is wound around a core tube (E).