JPS6233630A - Both-bottom bag blowing-port sticker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention "Industrial Field of Application" The present invention is directed to the use of folded paper for the blowing hole in base paper for manufacturing double-bottomed bags (double-bottomed paper bags, double-sided machine-sewn paper bags) having a blowing hole in the body pasting part. It relates to a device for pasting strips.

``Prior art'' Conventionally, the inlet of the body pasting part of a double-bottomed bag was made by folding and gluing the base paper for the inlet into a flat tube and then pasting it on the base paper for bag manufacturing (
(Japanese Patent Publication No. 60-10942), a line for feeding base paper for an inlet tube, applying an adhesive for forming an inlet tube, and cutting it into the same cylindrical shape, and a line for forming the cut tube. An inlet cylinder forming inlet that folds a long sheet of paper twice and forms a flat cylinder with applied adhesive, an inlet cylinder supply line that holds the flat cylinder and supplies it to the bag manufacturing base paper, and a bag length perforation line that is Alternatively, a moving line for bag manufacturing base paper with adhesive applied to the cut marks and the flat tube pasting positions is provided, and all these lines are connected to a mechanically linked AM system (chain) using the driving force of the tube making machine (tuber) main body. , gears, etc.), and a means for matching the speed of supply of the inlet tube to the speed of the movement line of the base paper, and a means for applying adhesive and cutting the tube supply line to form the tube in the inlet tube forming line. Because the positioning of the double-folding and the pasting position were performed by a mechanical interlocking mechanism using gears, there was a large error between the cylindrical growth cut position, the cylindrical folding width, and the pasting position.
This becomes especially noticeable when the speed of the moving line exceeds 50 bags per minute, so it is difficult to improve not only the production speed but also the width of the inlet and the accuracy of the attachment position, and the gears must be replaced to change the bag length and the inside of the inlet. The work is complicated and takes a long time, and it is also necessary to prepare and store several types of gears.
There were also deficiencies such as difficulty in simplifying the device.

"Problems to be Solved by the Invention" The present invention aims to improve the speed of a base paper line for manufacturing double-bottomed bags and to accurately affix an inlet at a position where the body is to be affixed.

``Means for Solving the Problems'' The present invention includes a moving line for bag manufacturing base paper with perforations or cut arcs for each bag length, a base paper feeding line for the blowing port, and a blowing port supply line. The above-mentioned moving line has a means for reading the speed and moving amount of the moving line consisting of a line sensor and a perforation or cut mark sensor, and the above-mentioned feeding line is equipped with means for reading the moving amount of the moving line. Means for outputting the ratio of mouth paper piece length/bag length according to a signal from the line sensor and means for cutting the mouth paper into a predetermined and easy-to-separate mouth paper piece length according to the same movement amount are connected to the supply line. means for folding and holding the easy-to-separate inlet paper piece at a predetermined position, simultaneously separating it from the inlet base paper, and supplying it to the moving line at the same speed and in the moving direction of the line; A means is provided for feeding the folded portion of the folded paper strip for the air inlet to a predetermined position from the perforation or cut arc by signals from a line sensor and a perforation or cut mark sensor provided on the line. Consists of a double-bottom bag inlet sticking device.

``Function'' Therefore, the length between the perforations or cut marks (bag length), the length of the paper strip at the air inlet, the folding position of the paper strip (folding position), and the position at which the paper inlet is attached by the folded paper strip (from the perforation) Enter the distance.In this state, when the bag base paper is pulled to form a moving line, the line speed and amount of movement are directly detected by the line sensor, and the line speed and amount of movement are directly detected regardless of variations in the same speed and amount of movement. Moving amount of paper piece length at the air inlet/
Outputs the movement amount of the paper feed line for the blowing port to the ratio of the bag length,
Move the same feed line. In this state, the paper strip length at the inlet port manually inputted in advance is compared with the amount of movement of the above-mentioned moving line, and a rotational speed command for the paper strip length cutting means is output, leaving a connection part that can be easily disconnected from the paper strip length at the inlet port of the feeding line. A length of inlet paper strip having a notch is formed. continue,
The piece of paper is fed to the inlet supply line, and at the position of the pre-input folding amount, the inlet supply line moves and is folded into the paper piece folding clamp part of the same line, and at the same time, the base paper for the inlet is fed. Due to the speed difference between the speed of the line and the speed of the inlet supply line, the piece of paper is separated from the connecting part left in the notch and is clamped by the clamping part.

Then, the supply line holding the folded paper piece for the air inlet is also moved at the same speed as the bag base paper movement line based on the calculation speed command from the line sensor and the perforation or cut mark sensor, and the perforation of the base paper is moved. Alternatively, the above-mentioned folded paper piece for the air blowing port is supplied to a predetermined position from the cut mark, and is stuck to an adhesive that has been previously applied to the same position on the base paper.

"Example" This example describes the case of attaching the air inlet to a double-bottomed paper bag (in the case of a double-sided machine-sewn paper bag, a cut mark sensor may be used instead of the lower perforation sensor; The operations and effects are completely the same as those of this embodiment, so their explanation will be omitted).

A moving line L is formed for the bag manufacturing base paper 2 that is pulled and pulled out from the roll base paper (not shown), and perforations 1 are made on the base paper 2 for each bag length by a par 7 orator (not shown). It is formed. Above the one-way line L, there is formed a paper feed line 1 for the winding spout which is pulled out from the base paper 4 for the winding spout by being pulled by pinch rollers 8 , 8 . The amount of movement of this feeding line L is the ratio of the amount of movement of the moving line L to the length of the paper piece at the blowing port/the length of the bag. A line sensor 3 formed by a pulse generator 10 is connected to the moving line L, and the speed and amount of movement of the moving line L are detected, and the signals are sent to the controller 9 and calculated to drive the DC motor 11 for driving the pinch rollers 8, 8. Servo amplifier 1
A speed command is output to 2, and the pinch rollers 8, 8 are rotated at the above ratio to change the amount of movement of the feed line L to the above movement line L.
The ratio can be controlled at a constant rate by the amount of movement.

On the feeding side of the pinch rollers 8, 8, an inlet paper piece cutter is provided with a rotary receiving roller 13 and a rotary cutting blade 14 (with a notched groove forming an easy-to-separate connection part) in contact with the receiving roller 13, and a line sensor 3, a speed command is output to the servo amplifier 16 of the DC motor 15 for driving the cutting blade 14, and the motor 15 rotates the cutting blade 14 in accordance with the amount of movement of the feeding line l.
To form a notch part in which a fixed length of a connection part which can be easily separated is left in an air inlet paper piece 5 regardless of changes in speed. 5 guide rotary rollers 17.1 for the same sheet of paper with the notches formed therein
7, and is fed onto the inlet supply roller 18 along the upper tangent of the inlet supply roller 18 of the inlet supply line l. The roller 18 has a paper folding clamp 7, and a rotating roller 20 with a paper folding plate 19 protruding from the upper part of the roller 18 is installed.
The rotating roller 20 is rotated by a driving DC motor 23.
A rotation speed command is outputted to the servo amplifier 24 of No. 3 by calculating the signal from the line sensor 3 and the signal from the perforation sensor 6 provided on the emitter 25 and receiver 26 provided on both sides of the moving line L by the controller 9. , controlling the rotational speed of the DC motor 23 and the rotational speeds of the rotary roller 20 and the inlet supply roller 18, and making a cut on the same roller 18 leaving an easy-to-separate connection that is fed to a predetermined folding position. The paper strip 5 of a certain length having a length of Due to the speed difference <1<1> with the speed of the inlet supply line l, the inlet is separated from the connection left in the notch of the paper piece 5 and folded double at a predetermined position by the folding clamp 7. The folded paper strip 5 is held between the folded paper strips 5 and the folded paper strip 5 is moved from the perforation 1 formed in the bag manufacturing base paper 2 at the same speed as the moving line L regardless of the speed of the moving line L. The operation of affixing the folded paper piece 5 to the body affixing portion of the base paper 2 on the moving line L using the adhesive previously applied to the same position is repeated for each perforation.

In addition, a paper tube shaping section using a Monoke shaping board (not shown) indicated by 27 in the figure, a double-bottomed paper bag made of the same paper Wi 27, 28
is a double-sided machine-sewn paper bag with an inlet on the body pasting part, 29 setting values (bag length, inlet paper strip length, amount of folding of the same paper strip, position of the inlet folded paper strip from the perforation) input section; TG is a tacho generator, and PG is a feedback pulse generator. By simply inputting the pasting position (distance from the perforation), the speed and amount of movement of the above-mentioned moving line L are read and compared using the line sensor 3 and the perforation or cut mark sensor 6, and each is driven independently. , the folded paper piece 5 for the blowing opening can be attached to the predetermined position of the base paper 2 for bag manufacturing with extremely high precision, and despite the speed change of the moving line L, for example, the speed increase fluctuation at the time of starting the moving line L, Since the folded paper strip 5 for the blowing inlet is supplied with high precision to the predetermined position from the perforation 1 of the original &2, the length of the paper strip and the folding position are varied until the moving line L reaches a steady speed. There is no loss due to misalignment of the air inlet to the base paper 2 (
(The same is true for speed decrease fluctuations during normal stop or emergency stop), not only can the product yield be improved, but the speed of the moving line L can be increased, and the manufacturing efficiency of double-bottom bag paper cylinders can be significantly improved. It is possible to easily and quickly respond to changes in bag length and blowing photoperiod.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the inlet sticking device for double-bottomed bags of the present invention;
Figure 2 is a system block diagram of the device, Figure 3 is a flat LTI diagram of the perforation sensor, Figure 4 is a plan view of the double-bottomed paper bag paper cylinder being formed, and Figure 5 is the supply of folded paper strips for the air inlet. FIG. 6 is a perspective view of a double-bottomed paper bag, and FIG. 7 is a perspective view of a double-sided machine-sewn paper bag. 1...Perforation, 2...Bag paper, L...Movement line,
!・・Base paper feeding line for the blowing port! ...Inlet supply line, 3...Speed sensor, 4...Inlet Kawahara paper, 5...
Air inlet paper piece, 6. Perforation sensor, 7. Inlet paper piece folding holder.

Claims (1)

[Claims] (1) A movement line for bag manufacturing base paper with perforations or cut marks for each bag length, and a base paper feeding line for the blowing port;
The moving line includes a line sensor and a perforation or cut mark sensor to read the speed and amount of movement of the moving line, and the feeding line has means for reading the moving amount of the line. Means for controlling the ratio of the amount of movement of the moving line to the length of the paper piece at the inlet port/bag length by the signal from the line sensor, and the length of the paper piece at the inlet port that allows the base paper for the inlet port to be easily separated at a certain level according to the amount of movement. Means for cutting into the supply line includes means for folding and holding the easily-separable piece of paper for the blowing port at a predetermined position, simultaneously cutting it from the base paper for the blowing port, and transporting it to the moving line at the same speed as the same line. feeding the folded portion of the folded paper strip for the air inlet to a predetermined position from the perforation or cut mark according to signals from a line sensor and a perforation or cut mark sensor provided on the moving line; An inlet adhesion device for a double-bottomed bag, characterized in that the device is provided with a means for attaching a double-bottomed bag.