JPS5834379B2 - web winding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION FIG. 1 shows the basic configuration of a web winding device conventionally used in paper mills and the like.

The web winding device shown in FIG. 1 is well known in the past, and consists of a rewinding section 1, a winding section 2, and an unloading section 3.
4 is a rewind roll, 5 is a paper roll, 6 is a slitter, 7
1 is a first winder drum, 8 is a second winder drum, 9 is a dump roll, 10 is a core shaft, 11 is a winding roll, 12 is a rider roll, 13 is a shaft pocket, 14
is a winder table, and 15 is a cradle.

FIG. 1 also shows that the winding roll 11 is finished winding on the winder drums 7 and 8, and then the next winding is started through the steps of FIGS. 2, 3, 4, and 5. It also shows a part of the processing status.

Next, a conventional web winding method will be explained with reference to FIGS. 1 to 7. The web a from the rewinding roll 4 is cut into a predetermined width by a slitter 6, and then the web a is cut into a predetermined length by a winding roll 11 on a winder drum. 7 and 8, the web winding device stops the rotation of each roll in the state shown in FIG.

Next, the details of the operation will be described. First, as shown in FIG. 2, after lifting the rider roll 12 vertically upward, the operator climbs onto the winder table 14 and tears the outer layer of the take-up roll 11 in the width direction.

Next, as shown in FIG. 3, the dump roll 9 is rotated around the shaft of the first winder drum 7 to push the take-up roll 11 onto the cradle 15.

Thereafter, the dump roll 9 retreats to its original position, and the core shaft 10 (hereinafter referred to as the core shaft) with the core b installed, which was previously stored in the shaft pocket 13, is moved to the first and second winder drums 7, 8. (1) The shaft is moved into the groove formed by a shaft carrying device (not shown).

Various types of shaft bringing-in devices are already in use in the industry, and their structures and functions are well known, so a detailed explanation will be omitted.

Next, as shown in FIG. 4, both ends of the core shaft 10 are held by core chucks and lifted vertically upward, and the operator 16 manually adjusts the tension of the web a while it exits the rewind roll 4 and reaches the core shaft 10. Make it uniform in the width direction.

Thereafter, another operator unloads the core shaft 10 onto the winder drums 7 and 8, and when the web tip is glued onto the core with tape, the excess web is broken in the width direction by the operator's direct manual operation. , removed from the web take-up device.

Next, as shown in FIG. 5, the leading edge of the web is directly bonded to the core b by the adhesive tape 17 by the operator 16.

FIG. 6 shows a state in which web a is adhered onto core b with adhesive tape 17.

Next, as shown in FIG. 7, the operator leaves the web take-up device, and the rider roll 12 descends onto the core b to apply pressure. After that, each roll of the web take-up device starts rotating again by the drive morph, and the core The web a is wound around the outer periphery of b, resulting in the state shown in FIG.

The above describes the winding process using the most common conventional web winding device.However, when using a conventional web winding device, direct manual work by the operator is required as described above, so there are many problems caused by this. There were drawbacks.

That is, immediately before the state shown in FIG. 2, the operator had to climb onto the winding device and manually tear the outer layer of the rewind roll 4 directly in the width direction, which was extremely troublesome.

In addition, as shown in FIG. 4, the operator 16 had to climb onto the winding device again and manually perform the work to equalize the tension distribution of the web a from the unwinding roll 4 to the core b. This work requires skill, and if you proceed to the next step and start winding without making the tension distribution uniform, web a will easily be cut off at the beginning of winding, resulting in a serious hindrance to winding. There was a drawback.

The above-mentioned direct manual work by the operator occurs due to the lack of equipment and functions of the web winding device, and these are all evaluated as drawbacks from the viewpoints of labor, safety, and improvement of work efficiency. It is something that exists.

Moreover, since the above-mentioned operations are repeated once every few minutes in recent high-speed web winding devices, the mechanization of these operations must first be considered in order to reduce wind damage. Ta.

However, since these operations are performed using relatively simple movements, it is thought that it would be easy to mechanize them, but so far no mechanized operations have appeared.

The present invention has been proposed in order to solve the above-mentioned conventional drawbacks, and includes a take-up roll extrusion device for pushing out a take-up roll wound on a drum from a winding position, and a take-up roll extrusion device that is attached to an installation part of the extrusion device. A suction box with a suction port facing the running path of the rolled paper, a paper cutting device with a knife that instantly protrudes the entire length in a direction across the running path, and a new core shaft after taping is inserted into the pocket between the drums. The winding roll completed on the winding machine is pushed out of the machine after the winding machine is temporarily stopped, and then a new core shaft is brought onto the winding drum. It is an object of the present invention to provide a web winding device that can automate the series of steps of pasting a paper end onto a core shaft and restarting winding.

The embodiment shown in the drawings will be explained below. The structure of the web winding device showing the embodiment of the present invention is different from the conventional one, as shown in FIG. This is the addition of .

Here, the structure of the dump roll 9 part of the conventional web winding device will be explained in detail with reference to FIG. , the rotating motion is usually performed by an electric motor via a pinion 18 and a segment gear 19 around the first winder drum 7 axis.

However, since this mechanism is conventionally known, detailed explanation will be omitted.

FIG. 9 shows the structure of a dump roll with a suction box and paper cutting device according to an embodiment of the present invention.

In the present invention, parts that are the same as those of the conventional device are designated by the same reference numerals.

In the figure, 20 is a center shaft, which is held at both ends by bearings 21.

The bearing 21 has the same structure as the both end bearings of the dump roll 9 shown in FIG.

A plurality of dump roll cells 22 are installed at appropriate intervals in the width direction of the center shaft 20, and bearings 23
It can be rotated by.

A support plate support ring 24 is attached to the center shaft 20 via a sliding bearing 25, and is rotatable around the outer circumference of the center shaft 20.

A retainer 26 is a ring that restricts movement of the dump roll cell 22 and the support plate support ring 24 in the width direction.

27 is a suction box with a flexible hose 28 attached to both ends, and the hose 28 has a structure that can be connected to a suction blower (not shown) to reduce the pressure inside the box 27 to an appropriate pressure below atmospheric pressure. It has become.

29 is an air cylinder supported by the center shaft 20 by a cylinder support 30.

Further, as shown by the dashed line in FIG. 11, the suction box 27 is rotated by a certain angle around the outer periphery of the center shaft 20 by the operation of the air cylinder 29.

In FIG. 10, a suction box 27 is attached to the lower surface of the support plate 31, and a paper cutting knife 32 and an air cylinder 33 for protruding it are mounted on the upper surface.
A knife support plate 34 and a knife guide 35 are attached.

Further, 2 indicates the protrusion stroke of the paper cutting knife 32.

The paper cutting knife 32 has a width slightly wider than that of the web gold mine, and the blade has a sawtooth shape that is generally used in this type of device.

The knife support plate 34 and the knife guide 35 are assembled to form a gap in which the paper cutting knife 32 can freely stroke.
and is retracted inside the knife guide 35, but is pushed out by the air cylinder 33 for a very short time only when cutting the web.

A plurality of air cylinders 33 are fixed at intervals corresponding to the upper surface of the support plate 31, and the support plate 31 is bolted to a support ring 24 which is rotatable around the outer circumference of the center shaft 20 via a sliding bearing 25. ing.

Next, FIGS. 12 to 1 for the embodiments of the present invention described above
To explain the operation based on FIG. 6, FIG. 12 shows a state in which the winding roll 11 has been wound onto the winder drums 7 and 8 and the winding device is stopped, and in this case, the suction box 27
is in the retracted position 27a shown in FIG. 11, and the paper cutting knife 32 is in the retracted state.

FIG. 13 shows the take-up roll 11 being extruded, and the dump roll cell 22 is the only part that comes into direct contact with the take-up roll 11.

At this stage, if the suction box 27 is in the advanced position 27b shown in FIG. cause

Therefore, at the stage shown in FIG. 13, the suction box 27 is controlled to the retracted position.

FIG. 14 shows the state immediately before the center of the winding roll 11 passes the top of the second winder drum 8. At this stage, the suction box 27 is first controlled to the forward position of 27b, and then the suction blower (not shown) is started and the pressure inside the suction box 27 becomes lower than atmospheric pressure, and then the paper cutting knife 32 protrudes and cuts the web a.

After cutting, the web a is sucked into the suction box 27,
It will be in a retained state.

FIG. 15 shows that the take-up roll 11 is completely attached to the winder drum 7.
The take-up roll 11 then rolls on a downwardly sloped winder table and moves to the cradle portion.

FIG. 16 shows a state in which the suction box and the paper cutting device are retracted. In this state, the retracting operation is interrupted and a new core shaft 10 is carried into the groove 1 between the winder drums.

However, since this core shaft loading device is conventionally known, detailed explanation will be omitted.

Now, as the core shaft 10 is carried into the groove formed by the first and second winder drums 7 and 8 as shown in Fig. 16, the web a reaching the unwinder has a uniform tension in the width direction. It is held by the core shaft's own weight.

Thereafter, the suction blower is stopped, and the suction box 27 is controlled to the retracted position 27a shown in FIG.
Further, the suction box and the entire paper cutting device are moved back again to the position shown in FIG. 12 and stopped.

Further, as shown in FIG. 16, if a double-sided adhesive tape, glue, etc. 36 is applied to the entire lower part of the core shaft 10 and the adhesive surface is exposed, then the rider jig is lowered onto the core shaft 10. By starting the winding device, the winding operation of the winding device is restarted.

The device for applying double-sided tape to the core shaft and the device for transporting the core shaft after pasting the tape into the pocket between the drums are described in a patent application filed in 1973, filed earlier by the present applicant.
1-119568 and is not the gist of the present invention, the description here will be omitted.

As explained in detail above, the present invention is constructed so that when the web is sucked into the suction box over the gold mine, the gold mine knife is protruded across the running path of the web, so that the web is pushed by the cutting edge and escapes. This prevents this phenomenon and allows for better cutting.

In addition, the leading end of the web after cutting is held under suction by a suction box, and the web thread is pulled by the box's retracting operation, and at that time, the web is pulled with a uniform force in the box width direction, so the web width direction between the unwinder and the take-up drum is The tension distribution is made uniform.

In addition, since the web is cut by a knife that instantly protrudes from the entire surface, the cut portion is perpendicular to the web flow direction and has the shape necessary for subsequent suction and holding by the suction box.

This eliminates the need for the operator to enter the web take-up device to cut the web, and the operator's work to equalize the tension in the width direction of the web, which was previously required, in the pre-process of gluing the web to a new core shaft. is also no longer necessary.

In this way, the number of times the operator enters the winding device is reduced, making the work safer and saving labor.

Note that the present invention can be applied to paper winding machines.

[Brief explanation of drawings]

Fig. 1 is a side view schematically showing a conventional web winding device, and Figs. 2, 3, 4, 5, and 7 show different operating states of the main parts of the device in Fig. 1. Fig. 6 is a perspective view showing the state in which the web wound around the core is attached with adhesive tape, Fig. 8 A is an enlarged side view showing the dump roll in Fig. 1, Fig. 8 9A is a front view of the same, FIG. 9A is a side view showing a suction drum and paper cutting device showing an embodiment of the present invention,
The figure opening is a front view of the same, FIG. 10 is a sectional view taken along line AA in FIG. 9, FIG. 11 is a sectional view taken along line BB in FIG. 9, FIGS.
14, 15, and 16 are side views showing the state of web winding by the apparatus shown in FIG. 9. Explanation of the main parts of the figure, 78... Winder drum, 9... Dump roll (take-up roll extrusion device)
, 11... Winding roll, a... Web, 27... Suction pock, Su, 32...
...Paper cutting knife, 34...Knife support plate, 35...
...Knife guide.

Claims (1)

[Claims] 1. A take-up roll extrusion device that pushes out the take-up roll wound on a drum from the winding position, a suction box with a suction port facing the web travel path attached to the installation part of the extrusion device, and A web winding device comprising: a paper cutting device having a knife that instantly protrudes all the material in a direction across a running path; and a device for carrying a new core shaft after taping into a pocket between drums.