JP2511796B2 - Roll body forming device - Google Patents

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 Patent Publication No. 53-192
As described in Japanese Patent Laid-Open No. 64, after the lower end of the sheet on the conveyor belt is sandwiched between the conveyor belt and the flexible cushion material arranged above the conveyor belt, the conveyor belt and the cushion material are disposed. And relative movement of the sheet to wind the sheet into a roll shape to form the sheet, or the actual construction of Sho 56-1440
As described in Japanese Patent Publication No. 36-36, a lower winding belt that rotates in the lower side 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 ridge and the like, and a roll such as a roll ridge and the like which is softly finished with a large winding diameter. A roll body forming apparatus for forming a body is provided.

[0008]

The present invention comprises a first molding member 10 which rotates in the molding direction, and a second molding member 11 which is arranged so as to face the first molding member 10. This first
The sheet 1 inserted into the inlet between the forming member 10 and the second forming member 11 is wound in a roll shape from the insertion end side by the differential forming action of both forming members 10 and 11 to form the roll body 1a. A differential forming means 9 for forming is provided, and a supply conveyor 2 for supplying the sheet 1 to the differential forming means 9 is provided on the upper side of the differential forming means 9, and the supply conveyor 2 and the differential forming means 9 are provided. While holding the middle part of the sheet 1 supplied to the entrance side between the forming members 10 and 11 into the delivery part of the sheet 1 between the two, and folding it into two folds, An insertion means 41 for inserting the single-wafer sheet 1 is provided in the entrance between the molding members 10 and 11.

[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 the outer periphery, and is rotatably provided on the shaft of the machine frame in correspondence with 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, which rotates a first conveyor (first forming member) 10 that rotates in a lower direction of the forming direction (direction indicated by an arrow b) and a first conveyor (first forming member) in a forming direction (direction indicated by an arrow c). The moving second conveyor (second molding member) 11 is disposed so as to face each other, and the supply conveyor
The single sheet 1 supplied from 2 to the inlet side between both conveyors 10 and 11 and inserted is wound into a roll from the insertion end side by the forming action by the differential rotation of both conveyors 10 and 11 to form the roll mesh 1a. It is designed to be molded.

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 endless belt 14 has a rough surface and appropriate elasticity, and rotates in a direction indicated by an arrow b at a speed higher 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 periphery, and is provided at an upper end of a pair of conveyor frames 19, and a 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 (the direction indicated by the 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,
Conversely, if the speed is reduced, a large diameter, weak and soft winding state is obtained.
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 for connecting the swing 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 insertion means, which is provided at the delivery portion of the sheet 1 between the supply conveyor 2 and the differential forming means 9,
When the leading edge of the sheet 1 supplied from the supply conveyor 2 is placed on the sheet receiving plate 40, the sheet 1 is lowered and the sheet 1 is fed.
This is for inserting the single sheet 1 into the entrance between the conveyors 10 and 11 from the folded portion side while pressing in a suitable position and folding it in two. This insertion means 41
Is an elevating arm pivotally supported by a pivot 42
43, and an insertion plate 44 fixed to the tip of the lifting 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, sheet 1
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 urging 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 into the inlet 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 single sheet 1 is bent by the insertion plate 44 of the insertion means 41, the bent portion may be in the middle of the front end portion or may be substantially in the center. However, if the sheet 1 is folded so that the leading end is shorter, the sheet 1 is wound so that the leading end is on the inner side from the bent portion, so that it becomes particularly easy to spread when the roll oscilloscope 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 first molding member 10 which rotates in the molding direction and the second molding member 11 which is arranged so as to face the first molding member 10 are provided. 1 molded member
The sheet 1 inserted into the entrance between the 10 and the second forming member 11 is wound in a roll shape from the insertion end side by the forming operation of both forming members 10 and 11 to form the roll body 1a. A differential forming means 9 is provided, and a supply conveyor 2 for supplying the sheet 1 to the differential forming means 9 on the upper side of the differential forming means 9.
Is provided, and the intermediate portion of the single sheet 1 supplied to the inlet side between the forming members 10 and 11 is pressed to the delivery portion of the single sheet 1 between the supply conveyor 2 and the differential forming means 9 to hold it. While folding in a folded shape, both molding members from the side of the folding part
Inserting means 41 for inserting the sheet 1 into the entrance between the 10 and 11
Since it is provided, the following remarkable effects are achieved. While pressing the middle part of the sheet 1 with the inserting means 41 and folding it into two folds, the sheet 1 is inserted into the inlet between both the molding members 10 and 11 from the side of the folded part. It is possible to start winding from the side of the folded portion where the single sheet 1 is folded in two. 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. While pressing the middle part of the sheet 1 supplied from the supply conveyor 2 to the inlet side between the forming members 10 and 11 with the inserting means 41 and folding the sheet into two folds, the forming members 10 and 11 are folded from the folded portion side. Since the single-wafer sheet 1 is inserted into the entrance of the space, once the single-wafer sheet 1 is folded in half and the bent part side is grasped, the entrance between the forming members 10 and 11 Compared to the one that guides and feeds the sheet 1 into the inside, there is no need for a gripping means and the like, and there is an advantage that the structure of the entire apparatus can be simplified. In particular, the single-wafer sheet 1 is folded into two folds, and the folded portion side is gripped by the gripping means, and the two molded members 1 are
In the case of guiding and supplying into the entrance between 0 and 11, the inserting means 41 is operated in synchronization with the opening / closing operation of the gripping means, and the bending portion side is bent while bending the sheet 1 by this inserting means 41. Since it is necessary to insert into a small grasping means, the inserting means 41 and the grasping means must be perfectly synchronized, and the entire apparatus is complicated and requires very precise precision. However, according to the present invention, both forming members that can press the single sheet 1 by the inserting means 41 and can be made larger than the grasping means and the like.
Since the single-wafer sheet 1 is inserted into the inlet between the ten and eleven, it is sufficient to synchronize the inserting means 41 with the supply of the single-wafer sheet 1, and the synchronization can be easily achieved. Therefore, the structure of the entire device can be simplified and
The complicated and precise precision is not required. Press the single sheet 1 with the insertion means 41
Since it is inserted into the inlet between 0 and 11, the length from the supply of the sheet 1 to the forming can be shortened, and the structure can be simplified, and the entire apparatus can be downsized. Since the insertion means 41 presses the single-wafer sheet 1 and inserts it into the entrance between the forming members 10 and 11 from the folding part side, the folding part side of the single-sheet sheet 1 is grasped and guided by the gripping means. Compared with the one, there is no possibility that a gripping habit or the like by the gripping means remains on the folded portion side of the sheet 1 and the finished state of the roll body 1a can be improved.

[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)

(57) [Claims] 1. A first molding member (10) which rotates in a molding direction.
And a second member arranged opposite to the first molding member (10).
A sheet having a forming member (11) and inserted into the inlet between the first forming member (10) and the second forming member (11)
A differential forming means (9) for forming the roll body (1a) by winding (1) in a roll shape from the insertion end side by the differential forming action of both forming members (10) and (11) is provided. On the upper side of the forming means (9), a supply conveyor (2) for supplying the sheet (1) to the differential forming means (9) is provided, and the supply conveyor (2) and the differential forming means (9) are provided. While holding the middle portion of the sheet (1) supplied to the inlet side between the forming members (10) and (11) in the delivery portion of the sheet (1) between An apparatus for forming a roll body, characterized in that insertion means (41) for inserting the sheet (1) is provided in an inlet between the forming members (10) and (11) from the side of the bent portion.