JPH0727118Y2 - Suction air blower for paper roll edge and edge recovery equipment using it - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction / air-blowing device for the edge of a paper roll and an edge recovery equipment using the same.

[0002]

2. Description of the Related Art Toilet rolls, roll towels, and raw rolls for paper diapers are manufactured by rolling a large-diameter web roll manufactured by a paper machine and rewinding it with a winding machine to a predetermined diameter. This is done by cutting to the width of. At this time, unnecessary parts at both ends of the web, so-called edge ends, are also cut by the cutter. Conventionally, the selvage that has been cut into strips is sucked by a suction pipe attached to the winder at a suitable place, then collected in one place by a blower duct, temporarily stored there, and then put into a pulper (pulp making machine), etc. And reused as raw material. The blower duct used here has a blower connected to one end, and carries the ear end by the wind pressure (positive pressure) in the blower duct.

[0003]

However, in the above-mentioned conventional example, since the air pressure in the air duct is positive, it is not possible to smoothly introduce the ear end into the air duct from the suction pipe, and the transport distance by the air pressure is Because of the short length, in a paper mill equipped with a large number of winders, there is an inconvenience in that the edges of the paper must be collected in many places.

In view of the above situation, the present invention provides an ear tip suction air blower and an ear tip collection facility that can efficiently collect the ear tips and can handle a large number of winders with one device. The purpose is to do.

[0005]

The suction air device of the present invention comprises:
A box having a shape in which two bottom surfaces are joined with one of the two hollow conical bodies on the rear surface side and the other on the front surface side; a blower pipe inserted into the inside of the box from the rear surface side end portion of the box; A blower connected to a blower pipe, a primary duct connected to a hole formed in a rear side wall surface of the box, and a secondary duct extending from an end portion on the front surface side of the box, and a tip of the blower pipe. Is located at a position extending toward the front side of the maximum inner diameter portion in the box, and the inner diameter of the secondary duct is larger than the inner diameter of the blower pipe. Further, the ear end recovery equipment of the present invention is claim 1.
In the suction air blower described above, the primary duct is connected to the edge suction pipe of the paper roll winder, and the secondary duct is provided up to the edge treatment site.

[0006]

In the present invention, when the air is blown from the blower pipe by the blower, the inside of the box becomes a negative pressure and the edge of the ear is sucked from the primary duct and fed into the secondary duct. The positive pressure in the secondary duct is sent to the edge treatment site at the tip of the secondary duct. Since the inside of the primary duct communicates with the box, the internal pressure is a negative pressure. Therefore, the selvage can be smoothly sucked into the primary duct from the suction pipe on the winder side, and it can be transported over a long distance. can do.

[0007]

EXAMPLE Next, an example of the present invention will be described based on an example applied to a toilet paper winder. FIG. 1 is an explanatory view of an edge recovery system according to an embodiment of the present invention, FIG. 2 is a sectional view of a suction air blowing device according to an embodiment of the present invention, and FIG. 3 is a perspective view of the suction air blowing device. 4 is a side view of the paper roll winder, and FIG. 5 is a perspective view of essential parts of the paper roll winder.

4 to 5 show only the winding part of the toilet paper winding machine, and the driving rollers 2 and 3, the riding roller 4, the nip roller 5 and the cutter 6 are the main constituent elements. In this winding part, when the toilet paper roll R on the winding shaft 1 is pressed by the riding roller 4 while rotating the driving rollers 2 and 3, the web W fed on the winding shaft 1 is wound up. It is designed to work. 10 is a suction pipe,
A J-shaped curved doctor 11 is formed at the tip of the suction duct 10. From the start to the end of this winding work,
An edge Pe of the web W fed on the surface of the drive roller 2 is cut by an edge-cutting cutter 6, scraped by a doctor 11 and sucked by a suction pipe 10.

In FIG. 1, A1 is the winding machine, and 20
Is a suction air blower, 30 is a primary duct, and 40 is a secondary duct. The primary duct 30 comprises a main duct 31 and a plurality of branch pipes 32 branched from the main duct 31, and each branch pipe 32 is connected to each suction pipe 10 of several winding machines A1 to An. The secondary duct 40 is arranged from the suction air blower 20 to the edge processing site (not shown). No special equipment is required for the edge treatment plant, but for example, a space near the inlet of the pulper for temporarily storing the edge can be considered. However, the tip of the secondary duct 40 may be directly exposed to the insertion port of the pulper, and the ear end may be directly inserted into the pulper.

Next, the details of the suction air blowing device 20 will be described with reference to FIGS. Reference numeral 21 is a hollow conical body on the rear surface side, and 22 is a hollow conical body on the front surface side, and the bottom surfaces are joined together to form one hollow box 23. A blower pipe 24 is inserted from the rear end of the box 23, and a blower 25 is connected to the rear end of the blower pipe 24. The tip of the blower pipe 24 is on the front side of the maximum inner diameter of the box 23, that is, the secondary duct.
It extends to a position close to 40. The inner diameter of the blower pipe 24 is smaller than the inner diameter of the secondary duct 40. The primary duct 30 is connected to a hole 26 formed in the wall surface of the rear conical body 21.

In the suction air blower 20 described above, when air is blown out from the blower pipe 24 as indicated by the arrow a, the space in the rear surface of the box 23 becomes negative pressure, and the air in the primary duct 30 is removed. As shown by the arrow b, the air is drawn into the box 23, and is further pressure-fed in the secondary duct 40 by the wind pressure of the blower 25.

Therefore, as shown in FIG. 1, the ear end Pe sent to the tip of the primary duct 30 is sucked into the box 23 and sent to the secondary duct 40. And 1
Since the inside of the next duct 30 has a negative pressure due to the suction action of the suction air blowing device 20, the action of sucking the ear end Pe from the suction pipe 10 of the winder A is smooth, and the ear end can be efficiently sucked. . Furthermore, since the negative pressure of the primary duct 30 and the positive pressure of the secondary duct 40 are maintained by the suction air blower 20, a large pressure difference is maintained between the primary duct 30 and the secondary duct 40, even if the primary duct Even if the distance between the duct 30 and the secondary duct 40 becomes long, the pressure difference does not decrease, so that long-distance transportation is possible.
Therefore, in this embodiment, a large number of winding machines, for example, 1 to 6 are used.
It is possible to collect the edges of the stand-up winder with a single collecting facility.

Although the above-mentioned embodiment is a recovery facility for a toilet paper winder, it is particularly useful for various roll winders such as other paper rolls such as roll towels and raw rolls for making diapers. It is applicable without limitation.

[0014]

EFFECTS OF THE INVENTION According to the present invention, the roll edge can be collected smoothly and can be conveyed over a long distance, so that it is possible to collect a large number of winders with a single facility.

[Brief description of drawings]

FIG. 1 is an explanatory view of an edge recovery equipment according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a suction air blowing device.

FIG. 3 is a perspective view of a suction air blowing device.

FIG. 4 is a side view of a winding part of the paper roll winding machine.

FIG. 5 is a perspective view of a main part of the paper roll winder.

[Explanation of symbols]

A Winder 10 Suction pipe 20 Suction air blower 30 Primary duct 40 Secondary duct 21 Rear conical body 22 Full conical body 23 Box 24 Blower pipe 25 Blower

Claims (2)

[Scope of utility model registration request] 1. A box having a shape in which two hollow conical bodies are joined to each other, one of which is a rear surface side and the other of which is a front surface side, and bottom surfaces are joined to each other. A blower pipe, a blower connected to the blower pipe, a primary duct connected to a hole formed in a rear side wall surface of the box, and a secondary duct extending from a front end of the box, The tip of the blower pipe is located at a position extending to the front side of the maximum inner diameter portion in the box, and the inner diameter of the secondary duct is larger than the inner diameter of the blower pipe. Air blower. 2. The suction duct of claim 1, wherein the primary duct is connected to an edge suction pipe of the paper roll winder, and the secondary duct is provided up to the edge processing site. Ear end collection equipment.