JPH11129358A - Method for reducing noise of paper feeder of bag making machine and paper feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for reducing the noise on the occasion when a cut-out part catches patterned paper, and a paper feeder, in regard to the paper feeder wherein a suction pipe sucks the tip part of the patterned paper from the bottom of a cassette, curves it, while lowering, releases then the tip part with a stop of the suction and puts it in the cut-out part provided in a segment roller and the tip part of the patterned paper is caught by the cut-out part. SOLUTION: An air flow in the direction of rotation of a segment roller 9 is driven against patterned paper 1 which rises due to a stop of suction of a suction pipe 8. An air discharge pipe 38 which drives the air flow and of which the discharge port is directed in the direction of rotation of the segment roller 9 is disposed in a cut-out part 35 of the segment roller 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for suppressing noise generated in a paper feeder of a bag making machine for producing bags such as envelopes, and a paper feeder which generates less noise.

[0002]

2. Description of the Related Art A bag having an attached portion in the center of the back surface, such as an envelope, is manufactured by supplying a pattern to a bag making machine. This manufacturing process is a folding process of the pattern as shown in FIG. Is being done. For example, in the case of an envelope, two vertical stripes 2 and 2a are inserted into the folded position of the expanded pattern 1 as shown in FIG. After folding back as shown in (C), glue 3 is applied to the edge portion outside the vertical streak 2a as shown in (D), and the portion to which the glue 3 is applied is shown in (E). The body is attached by folding it back from the vertical streak 2a, and then a horizontal streak 4 is inserted as shown in FIG. 3F to form a bottom, and the glue 3 is applied to the edge of the outer portion of the horizontal streak 4 as shown in FIG. The envelope 5 is applied, and is finally attached to the bottom by folding back the portion outside the horizontal streak 4.

[0003] This operation is performed by a bag making machine shown in FIG. That is, the pattern 1 is stored in the cassette 7 of the sheet feeding device 6.
4 (A) of FIG. 4A is placed at the tip, and one of the lower sheets is pulled out by the suction tube 8 and bitten between the segment roller 9 and the opposing roller 10. And the middle row
After being transferred to the roller 11, it is transferred to the vertical creasing device 12 while being suction-held by the intermediate roller 11. This vertical creasing device 12 has a creasing roller 14 and a rubber roller 15 on the outer periphery of which two parallel blades 13 extending in the body length direction project.
And the creasing blade 13 of the creasing roller 14
When the sheet comes into contact with the rubber roller 15 via the pattern 1, the vertical stripes 2 and 2 a are attached to the pattern 1 as shown in FIG.

[0004] The pattern 1 provided with the vertical stripes 2 and 2a is a rubber sheet.
The liner 15 is sucked and held and transferred to the first folding device 16 so that the portion outside the vertical streak 2 is folded inward as shown in FIG. The first folding device 16 includes an insertion roller 17, a guide roller 18 arranged so as to contact the periphery thereof, and a drawer roller 19 arranged below the insertion roller 17 at a distance therefrom. A folded roller 19a arranged to be in contact with both rollers of the insertion roller 17 and the drawer roller 19, and an insertion roller 17 and a folded roller 19a. And an insertion tube 20 arranged between the insertion roller 20 and an insertion roller 17 and a folding roller 19a.
Is inserted into the insertion tube 20. The insertion tube 20 has a slidable bottom plate 22 inserted into the front ends of two guide plates 21, and the depth of the bottom of the bottom plate 2 is
When it hits 2, it does not insert up to the vertical streak 2. For this reason, the inserted pattern 1 is the bottom plate 2
2, the portion outside the vertical stripes 2 is transported by the insertion roller 17 and the return roller 19 a and bent inward from the vertical stripes 2. This bent portion is cut between the draw-out roller 19 and the turn-back roller 19a, and the rear side in the transport direction of the pattern 1 is turned inward. Due to this folding, the leading end and the trailing end of the pattern 1 in the transport direction are reversed.

[0005] The paper pattern 1 whose rear portion is folded back is transferred to a gluing device 23, and the glue 3 is applied to a portion outside the vertical streak 2a as shown in Fig. 4 (D). The gluing device 23 is a glue pan 2
4, the glue 3 is pumped up by the roller 25 and transferred to the transfer roller 26. Then, the paste 3 is further transferred only to the plate 27 of the glued roller 28 having the projected plate 27 on the outer periphery. The glue 3 is applied to the pattern 1 transferred between the backup roller 29 and the backup roller 29 facing the backup roller 29. The glued pattern 1 is transferred to the second folding device 30, and the outer portion of the vertical streak 2a is folded as shown in FIG.
Pasted on the body. The second folding device 30 has the same structure as the first folding device 16 except that the depth of the groove is small.

[0006] The paper pattern 1 stuck on the body is transported to a horizontal transport section 31 and transported while being held by a transport roller 32. Although not shown, a creasing roller is arranged in the horizontal transport unit 31, and the horizontal glue portion of the pattern 1 is disposed at the bottom glue margin of FIG.
As shown in FIG. 4 (F), the horizontal streak 4 is provided, and a glue thread and a core metal are sequentially arranged at the passing position of the bottom glue margin. And then wrap it inward with the latter and stick it.

By the way, in the paper feeder 6 of this bag making machine, the drawing of the pattern 1 from the cassette 7 by the suction tube 8 is performed as shown in FIGS. The tip side of the pattern 1 is supported by a hook 33 pivotally connected to the upper portion, and the base of the suction tube 8 is moved up and down between the segments 34 of the segment roller 9 by using a hook. When the suction tube 8 is lifted, the hook 33 comes off, and the lower end of the cassette 7 is moved downward. , And is lowered. The suction tube 8 is configured to bend while sucking the leading end of the pattern 1 when descending, and to stop the suction when ascending.

Further, the drawn pattern 1 is segmented.
The segment roller 9 is cut into the gap between the roller 9 and the opposing roller 10. The segment roller 9 is provided with a segment 3 having a cut-out portion 35 which is hollow inside the part of the outer periphery.
4, each of the cutouts 35 is arranged so as to be linear, and is rotated counterclockwise. When the missing portion 35 of the segment roller 9 reaches a position near the opposing roller 10, the suction tube 8 descends, and the segment roller 9 and the suction tube 8 are moved downward. The timing is adjusted so that the pattern 1 is bent inside and the suction is stopped immediately. With the timing adjusted in this way, the suction pipe 8
When the suction stops, the pattern 1 rises by the repulsive force and hits the upper part of the notch 35, so that the leading end of the pattern 1 is pushed back downward by the rotation of the segment roller 9. At the time of this pushing back, the segment roller 9 is opposed to the opposing roller 10.
, So that the leading end of the pattern 1 is bitten between the two. The cut pattern 1 is transferred to the intermediate roller 11 by the guide plate 36 and the transfer roller 37.

[0009]

However, in such a paper feeder 6, since the segment roller 9 rotates at a high speed and the pattern 1 is a cardboard having a relatively high strength, the suction pipe 8 is required. When the pattern 1 curved by the above strikes the upper part of the notch 35 in the segment 34, there is a drawback that loud noise is generated. Accordingly, the present invention provides a method for suppressing noise in the paper feeding device 6 and a paper feeding device that generates less noise.

[0010]

According to the present invention, there is provided a cassette having no bottom plate on which a paper pattern is placed, and a cassette disposed below the cassette and having a missing portion on a part of the outer periphery of the constituent segment. A segment roller in which the parts are arranged in a straight line,
A cassette, wherein a base portion is pivotally mounted so that a distal end portion of a suction portion moves vertically between opposing rollers arranged to contact the segment roller and segments of the segment roller; A suction pipe which sucks the pattern from the bottom plate non-existing portion and stops the suction at a position in the missing portion of the segment roller after descending. Thus, noise was prevented by blowing airflow in the direction of rotation of the segment rollers.
Further, a gas discharge pipe whose tip is located at or near the missing portion of the segment roller and whose discharge port is oriented in the direction of rotation of the segment roller is disposed, so that a paper feeder that generates less noise can be provided. did.

[0011]

When the suction tube sucks the pattern and descends, the leading end of the pattern is bent, and when the suction tube stops suction at a position within the missing portion of the segment roller, the suction tube rises by a repulsive force. However, the segment roller is not
When the airflow in the rotation direction is blown, the ascending speed due to the repulsive force of the pattern becomes slow, and the force applied to the side of the missing portion of the segment roller becomes weak, so that the noise is reduced. The blowing of the air current may be started intermittently in synchronization with the stop of the suction of the suction tube, or may be performed constantly. In addition,
Normally, air is used as the air flow.

Further, the blowing of this air current is performed by disposing a gas discharge pipe whose tip is located at or near the missing portion of the segment roller and whose discharge port faces the rotation direction of the segment roller. For example, an air current can be reliably blown to the pattern. If this gas discharge pipe is arranged inside the constituting segment of the segment roller, the repulsive force of the portion of the pattern paper that hits the segment roller can be reduced, so that the blowing effect is increased.

Further, a gas passage is provided inside the shaft of the segment roller, a base of a gas discharge pipe is connected to the gas passage, and a valve having a gas supply port at an end of the shaft is rotatably provided. If the gas supply port is fitted to the position where the inlet of the gas passage passes when rotating, and the compressed gas is always supplied from the gas supply port, the inlet of the gas passage becomes the gas supply port of the valve pipe. Is reached, airflow will be sent to the gas passage. Therefore, if the position of the gas supply port of the valve pipe with respect to the horizontal or vertical direction is adjusted,
The airflow can be intermittently blown in synchronization with the stop of the suction of the suction tube. Further, by adjusting the circumferential length of the inside of the gas supply port of the valve pipe, the spraying time can be adjusted.

[0014]

1 and 2 show a sheet feeder 6a according to the present invention in a bag making machine. A segment 34 in a segment roller 9 of the conventional sheet feeder 6 shown in FIG.
A gas discharge pipe 38 is attached to the inner side surface by a holding plate 39, and its tip protrudes from the rear side in the rotation direction of the notch 35, and the discharge port is directed in the rotation direction of the segment roller 9. On the other hand, the base is fixed to the rotating shaft 40. Rotating shaft 40
A gas passage 41 is provided in the inside, and communicates with the base of the gas discharge pipe 38 as shown in FIG. The gas passage 41 is free
A valve pipe 44 is fitted to the outer periphery of the rotary shaft 40 at a portion where the entrance 43 is located. The fitting between the rotary shaft 40 and the valve tube 44 is rotatable, and the valve tube 44 has a gas supply port 45 formed therein. As shown in FIG. 3, the inside of the gas supply port 45 is a long hole extending in the circumferential direction.

If a supply pipe for compressed air is connected to the gas supply port 45 in the paper feeding device 6a, the compressed air is supplied to the gas passage 41.
And is blown to the gas discharge pipe 38 through the discharge port in the rotation direction of the segment roller 9. Further, by adjusting the circumferential angle of the gas supply port 45 of the valve pipe 44 with respect to the horizontal or vertical direction, the gas passage 41 reaching the gas supply port 45 is adjusted.
Time of entrance 43 and missing part 3 of segment roller 9
The air can be blown to the pattern 1 by adjusting the time when the air blows 5 before the opposing roller 10 is blown.
Further, by adjusting the length inside the gas supply port 45, the air blowing time can be adjusted.

[0016]

As described above, according to the paper feeder noise suppressing method of the bag making machine, the suction pipe is bent downward while the suction pipe sucks the tip of the pattern, and then the suction is stopped. When the leading edge of the paper pattern rises due to the repulsive force, airflow in the direction of rotation of the segment roller is blown against the paper pattern, so that the return speed of the leading edge of the paper pattern becomes slow, and the segment roller is lost. The sound when hitting the inside of the unit is reduced.
Further, in the paper feeder, a gas discharge pipe for blowing an air current to the leading end of the pattern is arranged in a missing portion of the segment roller so that its discharge port is directed in the rotation direction of the segment roller. When the leading end of the pattern curved by the suction tube rises due to the repulsive force, the airflow can be reliably blown.

[Brief description of the drawings]

FIG. 1 shows a sheet feeding device of the present invention in a bag making machine.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 2;

FIG. 4 is a manufacturing process diagram of an envelope by a bag making machine.

FIG. 5 is an overall configuration diagram of a bag making machine.

FIG. 6 is a conventional paper feeder of a bag making machine.

FIG. 7 is a sectional view of a segment roller in a conventional sheet feeding device of a bag making machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pattern paper 2, 2a Vertical streak 3 Glue 4 Horizontal streak 5 Envelope 6, 6a Paper feeder 7 Cassette 8 Suction tube 9 Segment roller 10 Opposite roller 11 Intermediate roller 12 Vertical creasing device 13 Straight blade 13 14 Crease Roller 15 Rubber Roller 16 First Folding Device 17 Insert Roller 18 Guide Roller 19 Pull Out Roller 19a Fold Roller 20 Insert Cylinder 21 Guide Plate 22 Bottom Plate 23 Gluing Apparatus 24 Glue pan 25 Pump-up roller 26 Transfer roller 27 Plate 28 Gluing roller 29 Backup roller 30 Second folding device 31 Horizontal transport unit 32 Transfer roller 33 Hook 34 Segment 35 Missing portion 36 Guide plate 37 Transfer roller 38 Gas discharge pipe 39 Holding plate 40 Rotating shaft 41 Gas passage 42 Frame 43 Entrance 44 Bar Breakfast tube 45 the gas supply port

Claims (5)

[Claims] 1. A cassette in which a bottom side plate on which a pattern paper is placed does not exist, and a segment which is arranged below the cassette and has a cutout portion in a part of an outer periphery of a constituent segment, wherein the cutout portion is linearly arranged. A roller, an opposing roller arranged to be in contact with the segment roller, and a base so that the tip of the suction unit moves up and down between the segments of the segment roller. A suction pipe that is pivotally mounted to suck the pattern from the portion where the bottom plate of the cassette does not exist, and that stops suction at a position in the missing portion of the segment roller after descending. A method of suppressing noise in a paper feeder of a bag making machine, characterized by blowing an airflow in the direction of rotation of a segment roller onto a paper pattern that rises as a result. 2. The paper feeder noise suppressing method for a bag making machine according to claim 1, wherein the blowing of the air current is started in synchronization with the stop of the suction of the suction pipe. 3. A cassette in which a front side bottom plate on which a pattern paper is placed does not exist, and a segment which is disposed below the cassette and has a cutout portion in a part of the outer periphery of the constituent segment, wherein the cutout portion is linearly arranged. A roller, an opposing roller arranged to be in contact with the segment roller, and a base so that the tip of the suction unit moves up and down between the segments of the segment roller. A suction pipe which is pivotally attached to suck the pattern from the portion where the bottom plate of the cassette does not exist, and stops the suction at a position in the missing portion of the segment roller after descending. A paper feeder for a bag making machine, characterized in that a gas discharge pipe whose discharge port is oriented in the direction of rotation of the segment roller is disposed in the missing portion of the bag. 4. The gas discharge pipe according to claim 3, wherein the gas discharge pipe is arranged inside a constituent segment of the segment roller.
A paper feeder for a bag making machine according to claim 1. 5. A gas passage is provided inside a shaft of a segment roller, a base of a gas discharge pipe is connected to the gas passage, and a valve having a gas supply port at an end of the shaft is rotatably provided. 4. The paper feeder of a bag making machine according to claim 3, wherein the gas supply port is fitted to the inlet passage position of the gas passage by fitting.