JPH06171627A - Roll body forming device - Google Patents

Abstract

PURPOSE:To provide a roll body forming device to form a roll body such as a rolled wet hand towel, etc., which can be easily unwound to extend at the time of usage, and is softly finished with a large winding diameter, when a roll body such as a rolled wet hand towel, etc., is formed. CONSTITUTION:For the roll body forming device, a feeding conveyor 2 to feed a leaf sheet 1 is provided, and at the same time, a forming means 9 to form a roll body by winding the leaf sheet 1, being fed by the feeding conveyor 2, from the bottom side is provided. Also, at a delivering part of the leaf sheet 1 between the feeding conveyor 2 and the forming means 9, an inserting means 41, which folds the leaf sheet 1 in two and inserts the folded leaf sheet 1 in the forming means 9 from the folded side, is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll forming apparatus for forming a roll body such as roll mesh by winding a sheet of paper, non-woven fabric, cloth or the like in a roll shape.

[0002]

2. Description of the Related Art A typical example of a roll body forming apparatus for winding a sheet of paper or the like into a roll to form a roll body such as a roll die is, for example, a roll die forming machine.

Conventionally, there are the following roll forming devices. That is, Japanese Examined Japanese Patent Publication 5-1926
As described in Japanese Unexamined Patent Publication (Kokai) No. 4, the conveyance belt and the cushioning material are sandwiched between the conveyance belt and the flexible cushioning material arranged above the conveyance belt, and the lower end of the sheet on the conveyance belt is sandwiched. And relative movement of the sheet and the sheet is wound into a roll to form a sheet, or
As described in Japanese Patent Publication No. 6, a lower winding belt that rotates in the lower direction and an upper winding belt that rotates in the upper direction are arranged vertically opposite to each other, and at the inlet side between the two winding belts. After sandwiching the lower end portion of the sheet, the sheet is wound into a roll by differential rotation of both winding belts to form the sheet.

[0004]

A conventional roll-oscillating forming apparatus supplies a sheet, and in the state as it is, generates a winding start portion while sandwiching the lower end of the sheet, that is, the tip. The sheet is wound in a roll shape around this winding start portion to form a roll mesh.

Therefore, the finished roll is simply wound from the one end side of the sheet, so that when it is used, it must be unrolled and extended continuously over the entire length of the sheet in the winding direction. However, there is a drawback that it cannot be easily spread.

Also, at the time of forming, if the sheet is wound in a roll form from the front end portion, the winding start portion is very small,
Since the entire roll is wound around this to form the roll mesh, the roll diameter of the roll mesh is extremely small, and it is difficult to finish the roll softly with a large roll diameter.

In view of the above conventional problems, the present invention is capable of easily rewinding and unfolding at the time of use when forming a roll body such as a roll mesh, and a roll such as a roll mesh which is softly finished with a large winding diameter. A roll body forming apparatus for forming a body is provided.

[0008]

[Means for Solving the Problems] The present invention relates to a sheet 1
And a forming means 9 for forming the roll body 1a by winding the single-wafer sheet 1 supplied from the supplying conveyor 2 from the lower side, and between the supplying conveyor 2 and the forming means 9. The delivery unit of the single sheet 1 is provided with an inserting unit 41 that folds the single sheet 1 into two and inserts it into the forming unit 9 from the side of the folding unit.

[0009]

[Function] Single sheet 1 from feed conveyor 2 to forming means 9
When the sheet is supplied, the sheet 1 is folded into two by the inserting means 41 and is inserted into the forming means 9 side from the bent portion side. Then, the forming means 9 forms the roll body 1a by winding the sheet 1 from the bent portion side in a roll shape.

When the roll body 1a is used, if it is unwound to the bending portion, the whole roll is easily spread thereafter, so that it can be easily spread and used. Further, since it is wound in a roll shape from the bent portion side, the winding start portion is large, and the number of windings is small, so there is no winding tightness and the winding diameter of the roll body 1a is large and the finish is soft.

[0011]

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 illustrates a roll forming device as an example of a roll forming device. 1 is a sheet of paper or the like, 2 is a supply conveyor, and a sheet is continuously sent at a predetermined pitch from the previous step. 1 for sequentially supplying 1 in the direction of arrow a.

The supply conveyor 2 is formed by suspending a plurality of endless belts 5 between a driving roller 3 and a driven roller 4 which are axially attached to a machine frame, and holds the sheet 1 from both upper and lower sides. It is designed to be transported. The driven roller 4 has a disk shape having a circumferential groove on its outer circumference, and is rotatably provided on the shaft of the machine frame corresponding to each endless belt 5.

A pressing belt 6 is suspended between a driving roller 7 and a driven roller 8 axially attached to the machine frame so as to press the sheet 1 on the supply conveyor 2. Reference numeral 9 denotes a differential forming means, in which a first conveyor 10 rotating in a lower direction (direction indicated by arrow b) and a second conveyor 11 rotating in an upper direction (direction indicated by arrow c) face each other. Arranged and supply conveyor
The single sheet 1 supplied from the
It is adapted to be wound into a roll shape by differential rotation of to form the roll mesh 1a.

The first conveyor 10 is arranged vertically from the end of the supply conveyor 2 downward, and together with the drive roller 12 on the lower end side pivotally mounted on the machine frame and the driven roller 4 of the supply conveyor 2. A plurality of endless belts (14) are suspended between the driven roller (13) on the upper end side which is axially attached. Each of the endless belts 14 has a rough surface and has an appropriate elasticity, and is adapted to rotate in a direction indicated by an arrow b at a speed faster than that of the supply conveyor 2. The driven roller 13 has a disk shape having a circumferential groove on the outer circumference and is arranged between the driven rollers 4.

The second conveyor 11 is driven by a drive roller 16 on the lower end side, which is attached to the machine frame via a drive shaft 15, and a driven roller 16 on the upper end side, which is arranged at substantially the same height as the driven roller 13 of the first conveyor 10. A plurality of endless belts 18 are suspended between the rollers 17. The driven roller 17 has a disk shape having a circumferential groove on the outer circumference, is provided at the upper end of the pair of conveyor frames 19, and the lower end of the conveyor frame 19 is pivotally supported by a drive shaft 15 so as to be swingable.

Therefore, the second conveyor 11 is the first conveyor 10
The drive shaft 15 at the lower end is swingable so that the gap between and changes vertically. The endless belt 18 is the first conveyor
The endless belt 14 is rotated in the direction of arrow c at the same speed or at a slower speed.

Reference numeral 20 is a regulating means, which is the first of the differential forming means 9.
The sheet 1 between the second conveyors 10 and 11 is moved downward while regulating from the lower side, that is, from the lower side, to release the regulation. The restricting means 20 includes a plurality of Y-shaped frames 22 fixed to a main shaft 21 in correspondence with a plurality of endless belts 14 and 18 of the conveyors 10 and 11, and shafts attached to the tips of the frames 22. 3 driven rollers 23 and each driven roller 23
Between the three drive rollers pivotally mounted on the base side of the frame 22 between
24 and a plurality of endless belts 25 suspended in a star shape between the rollers 23, 24, and three restricting portions 26 that radially project are configured.

A gear 27 is fixedly mounted on the shaft end of each drive roller 24, and the gear 27 is meshed with a main gear 28 fitted over the main shaft 21. Then, the main shaft 21 and the main gear 28 of the regulating means 20 are separately driven in the counterclockwise direction (direction indicated by arrow d),
Each regulation unit 26 rotates downward while sequentially regulating the sheet 1 between the conveyors 10 and 11, and the endless belt 25 causes the regulation unit 26 to move.
The sheet 1 is rotated in the winding direction (direction indicated by arrow e) regulated by.

The endless belt 25 is used for the first conveyor 10
It rotates at the same speed as the endless belt 14 or at an appropriate speed.If this speed is increased, the sheet 1 is tightly wound, and the roll mesh 1a becomes a small diameter and strong winding state,
On the contrary, if it is slowed down, it will be a large diameter, weak and soft winding state.
Therefore, the speed of the endless belt 25 may be determined in consideration of the material and thickness of the sheet 1.

Reference numeral 29 is a drive means for swinging the second conveyor 11, and a swing arm 31 whose lower end is pivotally supported by a pivot 30.
And a connecting rod 35 that connects the swinging arm 34 and the conveyor frame 19.
And a spring 36 for urging the swing arm 31 so that the upper part of the second conveyor approaches the first conveyor 10 side, and a swing arm 31 fixed to the cam shaft 37 and swinging the swing arm 31 via a cam follower 38. It is composed of a cam 39 and a cam.

It should be noted that the cam 39 is constructed so as to sequentially change the gap between the conveyors 10 and 11 according to the change in the winding diameter when the sheet 1 is rolled in the conveyors 10 and 11. There is.

Reference numeral 40 denotes a comb-tooth-shaped sheet receiving plate, which has a height substantially the same as that of the feed side of the supply conveyor 2 so as to form a delivery section for delivering the sheet 1 from the supply conveyor 2 to the differential forming means 9. And is arranged above the second conveyor 11.

Reference numeral 41 denotes an inserting means, which descends when the front end portion of the sheet 1 supplied from the supply conveyor 2 is placed on the sheet receiving plate 40, and folds the sheet 1 into two at appropriate positions. It is for inserting between the conveyors 10 and 11. The inserting means 41 is composed of an elevating arm 43 pivotally supported by a pivot 42 so as to be vertically swingable, and an inserting plate 44 fixed to the tip of the elevating arm 43.

Reference numeral 45 is a driving means for driving the inserting means 41, one end of which is a swing arm 47 pivotally supported by a pivot shaft 46 so that the swing arm 47 and the elevating arm 43 are connected. A rod 48, a spring 49 for urging the insertion means 41 downward via a swing arm 47, and a cam 51 fixed to the cam shaft 37 and swinging the swing arm 47 up and down via a cam follower 50.
It consists of and.

Reference numeral 52 denotes a carry-out conveyor, which is composed of an endless chain with an attachment that rotates so as to sequentially carry out the roll mesh 1a formed by the differential forming means 9 to the subsequent packaging unit.

Next, the forming operation of the roll body 1a by the above apparatus will be described. First, the sheet 1 is fed by the feeding conveyor 2.
When the sheet is conveyed in the direction indicated by arrow a, and the leading end of the sheet is placed on the sheet receiving plate 40 of the delivery section, the elevating arm 43 of the inserting means 41 driven up and down by the driving means 45 descends by the biasing force of the spring 49. Then, the insertion plate 44 at the tip of the elevating arm 43 pushes down the middle part such as the central part or the vicinity of the lower side of the single-wafer sheet 1 bridging between the supply conveyor 2 and the sheet receiving plate 40. .

Therefore, the single-wafer sheet 1 is shown in FIG.
As shown in, the part is folded in two,
From the bent portion side, the differential forming means 9 is inserted between the first and second conveyors 10 and 11.

On the other hand, at this time, the second conveyor 11 which is oscillated by the drive of the drive means 29 is in an oscillating state toward the first conveyor 10 as shown in FIG. The entrance side of 10,11 is narrow. Then, the double-folded sheet 1 inserted between the two conveyors 10 and 11 is transferred downward while being subjected to the differential action by the differential rotation of the two conveyors 10 and 11.

Further, the regulating means 20 is rotating in the direction of the arrow d in synchronism with the supply of the single sheet 1, and the three regulating portions are provided.
One of the 26 projects to the upper side between the first and second conveyors 10 and 11. Then, the sheet 1 that has started to be formed into a roll is regulated from below by the regulating portion 26, and is fed downward as the regulating means 20 rotates in the direction of arrow d while receiving the regulating action. Go.

Therefore, when the folded portion of the single sheet 1 comes into contact with the regulating portion 26, this folded portion is moved to the first conveyor.
Since it is guided from the 10 to the second conveyor 11 side via the restriction portion 26, as shown in FIG.
-The differential action of the second conveyors 10 and 11 causes the sheet 1 to start winding in a roll shape with the leading end side of the folded portion as the winding start portion.

Therefore, since the leading end side of the bent portion is used as the winding start portion, the winding start portion becomes large, and the bending portion is regulated by the regulating portion 26 to generate the winding start portion. The winding start portion can be reliably generated in the single sheet 1 without strongly sandwiching the single sheet 1 by the conveyors 10 and 11.

Further, in the regulating portion 26, the endless belt 25 is rotated in the winding direction (direction indicated by the arrow e), and since the endless belt 25 assists the forming of the sheet 1, the occurrence of the winding start portion, And, the subsequent molding of the roll mesh 1a becomes smooth and reliable. When the sheet 1 is rolled and formed into a roll, the roll diameter of the roll-shaped portion increases, so that the second conveyor 11 moves outward as shown in FIG. 2 (C). And the gap between the conveyors 10 and 11 gradually expands according to the winding diameter.

When the sheet 1 is rolled up to the end to form the roll mesh 1a, thereafter, as shown in FIG. 2 (A), the regulating section 26 of the regulating means 20 is moved to the conveyor. After 10 and 11, the regulation is released and the roll mesh 1a falls on the carry-out conveyor 52 below. Therefore, the passage time of the differential forming means 9 from the supply of the sheet 1 to the discharge of the roll mesh 1a becomes constant, the winding diameter of the roll mesh 1a can be made substantially constant, and the roll mesh 1a after molding can be It can be discharged onto the carry-out conveyor 52 in the subsequent stage at a substantially equal pitch.

On the other hand, at the same time as the discharging, the second conveyor 11 swings toward the first conveyor 10 and the inserting means 41 descends to bend the next sheet 1 and insert it between the conveyors 10 and 11. go. When the sheet 1 is bent by the insertion plate 44 of the insertion means 41, the folding position may be in the middle of the tip side or in the substantially central part. However, if the sheet 1 is bent so that the tip side becomes shorter, the sheet 1 will be rolled so that the tip side will be inward from the folding part, so that it becomes particularly easy to spread when the roll oscillator 1a is used. There are advantages.

The regulating means 20 is composed of three regulating portions in the circumferential direction.
Not limited to one having 26, a belt suspended between the rollers may be swingably provided so as to be retracted between the conveyors 10 and 11. Further, in the examples, the molding of the roll mesh 1a has been illustrated, but the roll body is not limited to the roll mesh 1a, and a relatively short length such as a polyethylene roll-up dust bag, a small paper for calligraphy, etc. If anything, it is widely available to them.

[0036]

According to the present invention, the supply conveyor 2 for supplying the sheet 1 is provided and the supply conveyor 2 is provided.
Forming means 9 for forming the roll body 1a by winding the single sheet 1 supplied from the lower side, and the single sheet 1 is provided at the transfer part of the single sheet 1 between the supply conveyor 2 and the forming means 9. Since the insertion means 41 for folding the sheet into two folds and inserting it into the forming means 9 from the side of the folded portion is provided, it is possible to start winding from the side of the folded portion where the sheet 1 is folded in half. Therefore, when the roll body 1a is used, it can be easily rewound, and the roll body 1a can be formed with a large winding diameter and finished softly.

[Brief description of drawings]

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

2A to 2C are explanatory views showing a molding process.

[Explanation of symbols]

 1 sheet 1a roll oscillating (roll body) 2 supply conveyor 9 differential forming means (forming means) 10 first conveyor 10 11 second conveyor 11 20 regulating means 41 inserting means

Claims (1)

[Claims] 1. A supply conveyor for supplying a single sheet (1)
(2) is provided, and the sheet feeding sheet (1) supplied from the supply conveyor (2) is wound from the lower side to provide a forming means 9 for forming the roll body (1a). Inserting means (41) for folding the single sheet (1) into two folds and inserting it into the forming means (9) from the folding part side at the transfer part of the single sheet (1) between the means (9). A roll forming machine characterized by being provided.