JP2003040222A - Defective back lining detector in bag-making apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a defective back lining detector to be simply set by a one- touch operation even if a direction of laying a back lining portion of a bag- formed body is frequently changed, largely improve working efficiency in bag- making, and also reduce a cost. SOLUTION: A disklike sensor 40 is mounted via a coupling plate 31 on a lower part of a rotary plate 22 which is pivotable with a pin 23 as an axis. One of ends 26a of a spring 26 is locked with an upper part of the rotary plate 22, while the other end 26b of the spring 26 is locked with a locking hole 27 of a base plate. Sensors 43 and 45 for sensing an inclination of the rotary plate 22 are provided an bath sides of a protrusion 24 on the upper part of the rotary plate 22. If a direction of laying a back lining portion 10 of a bag-formed body 11 is the left opposite to that indicated in the figure, the other end 26b of the spring 26 is locked with a locking hole provided opposite to the locking hole 27. Thus the rotary plate 22 is biased in a reverse direction to that indicated in the figure, and the sensor 40 is inserted inside the back lining portion 10 laid leftward to detect a failure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a continuous bag-shaped body by folding a continuously supplied sheet into a bag shape by a molding machine and sealing the folded edges on both sides. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag machine, and more particularly, to a backing defect detection device that detects a defect in a sealed backing portion of a bag-shaped body that is continuously manufactured.

[0002]

2. Description of the Related Art FIG. 14 shows a schematic structure of a bag making apparatus 1, in which (a) is a side view of the bag making apparatus 1 and (b) is a plan view of the bag making apparatus 1. A sheet 3 made of a synthetic resin film or paper is wound around the rotatable feed roller 2, and the sheet 3 is conveyed from the feed roller 2 to a molding machine 5 via a plurality of guide rollers 4. It is supposed to be done.

The molding machine 5 is for folding the conveyed flat sheet 3 while transporting it to form a bag-like shape, and heat-seals the folded edges on both sides in the longitudinal direction. It That is, the heat sealing machine 6 and the cooling machine 7 are arranged above the molding machine 5,
The heat sealing machine 6 heat-seals the edges of both sides of the sheet 3 to each other, and further cools the heat-sealed portion by the cooling machine 7 to form a so-called backing portion 10 continuously. There is.

FIG. 15 shows a perspective view of a bag-shaped body 11 in which the seat 3 is formed by folding and forming the backing portion 10. The bag-shaped body 11 formed in this manner is provided with the pull-out rollers 12 and 1 arranged vertically as shown in FIG.
At 3, the sheet is transferred to the subsequent stage, further cut into appropriate sizes, and at the same time, one end is heat-sealed to form a bag body with the other end opened.

The bag body manufactured as described above is required to have hermeticity, and the sealing of the bag-like body 11 at the backing portion 10 is required to be complete. FIG. 16 shows the back 10
The one piece 14 of the bag-shaped body 11 and the other piece 15 of the other have to be completely sealed.
FIG. 17 shows a state in which the one piece 14 and the other piece 15 are completely sealed as in the case of FIG. 16 (in FIG. 17, the one piece 14 and the other piece 15 are separated from each other for easy understanding). ing.

However, the bag making apparatus 1 has, for example, 10
It has a length of about a meter, and while the sheet 3 is being transferred and molded, it shifts to the right or left without the operator being aware of it, and one edge of the bag-shaped body 11 is displaced. It may happen. For example, as shown in FIG.
One piece 14 of the bag-shaped body 11 is molded, but the other piece 15 of the other
There is a problem that is not molded and is not heat-sealed. In this way, when the backing part 10 is not normally formed, it becomes a defective product, and since the backing part 10 is not formed continuously, the bag-shaped body 11 must be discarded as a defective product. Moreover, since the bag manufacturing apparatus 1 manufactures the bag-shaped body 11 at a high speed, a large number of defective products are generated.

Therefore, as shown in FIG. 14, a backing defect detecting device 60 for detecting a defect in the backing portion 10 is arranged at the subsequent stage of the heat sealing machine 6. By the way, bag 1
The backing portion 10 of 1 is tilted to the right or left according to the client's request, for example, the area for printing the company name and characters. FIG. 17 shows a case where the backrest portion 10 is “tilted to the right”, and when the backrest portion 10 is tilted in the opposite manner to FIG.
"Left over". Therefore, the back tension portion 10 is arranged at the right or left of the back tension portion 10 to detect a defect in the back tension portion 10.

FIGS. 19 and 20 show the case where the backing portion 10 of the bag-shaped body 11 is tilted to the right, and the backing defect detection device 60 is arranged on the right side of the bag-shaped body 11. The back defect detection device 60 is configured as follows.
That is, the strip plate-shaped base plate 61 is fixed to the bag making apparatus 1 side, and the slide plate 62 is provided on the upper surface of the base plate 61.
Are slidably arranged along the longitudinal direction. The slide plate 62 has a slit 63 formed in an elongated hole, and the two bolts 64 from below the base plate 61 are drilled.
Is inserted into the slit 63, a nut 65 is screwed on the upper surface side of the slide plate 62, and the bolt 64 is loosely fitted in the slit 63 so that the slide plate 62 can slide with respect to the base plate 61.

A disc-shaped detector 66 is attached to the tip of the slide plate 62 with a bolt 67 and a nut 68, and the tip of the detector 66 is attached to the backing portion 10 of the bag-like body 11.
I put it on the lower side of the board to detect defects. Further, a coiled spring 69 is suspended between the base portion of the slide plate 62 and the bag making apparatus 1 side, and the spring 69 urges the slide plate 62 toward the back tension portion 10 side. Further, a limit switch 70 is provided behind the slide plate 62, and the limit switch 7
The actuator 71 of No. 0 presses the back surface of the projection 73 provided on the base of the slide plate 62. Reference numeral 72 is a lead wire led from the limit switch 70.

Now, in the state shown by the alternate long and two short dashes line in FIG. 19 and in the state shown in FIG. The inner base of the backing portion 10 is biased. In this state, the back portion 10 of the bag-shaped body 11 is normally formed, so that the detection body 66 is restricted from moving to the left by the back portion 10. Further, since the detection body 66 and the slide plate 62 do not slide any further, the actuator 71 of the limit switch 70 is maintained at the position where it is pressed against the protrusion 73. In this state, the actuator 71 cannot swing to the slide plate 62 side any more,
The internal contact of the limit switch 70 outputs an ON or OFF signal, and the back contact portion 10 is output by this signal.
Is said to be formed normally.

However, as shown in FIG. 18, the one piece 14 and the other piece 15 are not bonded to each other, and the back portion 10 is normally formed.
When the gap is not formed, the slit 74 communicating with the inside of the bag-shaped body 11 is formed. Therefore, the detector 6
6 is inserted into the slit 74 by the spring force of the spring 69, and the slide plate 62 itself slides toward the bag-shaped body 11 side. When the slide plate 62 slides toward the bag-shaped body 11,
The restriction of the actuator 71 of the limit switch 70 is released, the actuator 71 is restored, the internal contact of the limit switch 70 is turned off or on, and the signal is sent to the operator by a buzzer, a lamp, etc. The tension portion 10 is notified that a defect has occurred.

[0012]

In the above-described backrest defect detecting device 60, the backrest portion 1 of the bag-shaped body 11 being manufactured.
Although a defect of 0 can be detected, there are the following problems. That is, once the backing defect detection device 60 is set in the bag making device 1, the defect of the backing part 10 can be detected, but the backing part 10 is tilted to the right in the case of FIGS. 19 and 20. However, in the case of tilting to the left,
It is necessary to reset the back defect detection device 60 on the opposite side of the bag 11.

The backrest portion 10 of the bag-shaped body 11 is frequently changed to the right or left over the course of one day, and the backrest defect detection device 60 may be moved to the right or left side depending on the direction in which the backrest portion 10 is tilted. Need to be reset. The setting of the backrest defect detection device 60 is extremely time-consuming, and can only be set by a person who is a technician, and a person who is a part-timer cannot set it.

Even if the technician sets the back defect detection device 60, it takes time to disassemble the back defect detection device 60 and install it on the opposite side.
Back defect detection device 60 than the time to manufacture one lot
It took more time to disassemble and reset.
Therefore, there is a problem that work efficiency is very poor.
Further, the backing defect detection device 60 itself is very expensive, and if a plurality of bag making devices 1 are installed, the backing defect detection device 60 will be installed in each of them, which is very expensive as a whole. There was a problem of becoming.

The present invention has been provided in view of the above-mentioned problems, and it is very easy to set the backing defect detecting device even when the tilting direction of the backing portion of the bag-like body is frequently changed. The present invention provides a backing defect detection device in a bag manufacturing apparatus, which can be performed with one touch, greatly improves the bag manufacturing work efficiency, and reduces the cost.

[0016]

Therefore, in the backing defect detecting device in the bag making apparatus according to the first aspect of the present invention, the sheet 3 is folded by the bag making apparatus 1 so that the edges of the sheet 3 on both sides are folded. In a backing defect detection device in a bag manufacturing apparatus for forming a bag-shaped body 11 via a backing part 10 formed by pasting, and detecting a bonding failure of the backing part 10 of the bag-shaped body 11. A detection body that is rotatably disposed above the backing portion 10 of the bag-shaped body 11 and has a lower side inserted and disposed inside the backing portion 10, and one end 26a is locked to an upper portion of the detection body, A spring 26 that locks the other end 26b to either side of the detection body to urge the detection body clockwise or counterclockwise, and a backrest that detects the tilt of the detection body. With the sensors 43 and 45 that detect the bonding failure of the part 10, Ri that is characterized in constituting the failure detecting device 20.

With such a configuration, even when the backing portion 10 of the bag-shaped body 11 is tilted to the right or left, the one end 26a of the spring 26 is centered on the other end 26b of the spring 26. By simply locking the right or left side, the urging direction of the detection body can be adjusted to the back portion 10
It is possible to detect a defect in the backing portion 10 in correspondence with the tilting direction of. Therefore, even if the tilting direction of the backing portion 10 is changed, the backing failure detection device 20 can be set with one touch, and the work efficiency of bag making can be significantly improved. Also, the cost can be reduced.

In the backing defect detecting device in the bag making apparatus according to the second aspect of the invention, the backing portion 10 is formed by folding the sheet 3 by the bag making apparatus 1 and adhering the edges on both sides of the sheet 3. The bag-shaped body 11 is formed through the
In a backing defect detecting device in a bag manufacturing apparatus for detecting a bonding failure of the backing part 10 of No. 1, the backing part is rotatably disposed above the backing part 10 of the bag-shaped body 11, and the lower side is the backing part. A detection body to be inserted and arranged inside 10, and one end 26a,
29a are respectively locked to the upper part of the detection body, and the other end 2
6b and 29b are respectively locked to both sides of the detection body to urge the detection body in a clockwise or counterclockwise direction, and a backrest is detected by detecting the inclination of the detection body. Sensor 4 for detecting the bonding failure of part 10
It is characterized in that the backrest defect detecting device 20 is constituted by 3 and 45.

With such a configuration, even when the backing portion 10 of the bag-shaped body 11 is tilted to the right or the left, the detection body is merely tilted clockwise or counterclockwise, and By simply inserting the lower portion of the detection body into the backing portion 10 of the bag-shaped body 11, the biasing direction of the detection body is made to correspond to the falling direction of the backing portion 10, and the backing portion 1
A defect of 0 can be detected. Therefore, even when the tilting direction of the backrest portion 10 is changed, the backrest failure detection device 20
The setting can be done with one touch, and the work efficiency of bag making can be greatly improved. Moreover, the cost can be reduced.

In the backing defect detecting device in the bag manufacturing device according to claim 3, the backing defect detecting device 20 according to claim 1 or 2, and the bag manufacturing device 1 above the bag manufacturing device 1. And a slide member 77 that is slidably provided along the longitudinal direction of the bar 84 and that has the backrest defect detecting device 20 attached thereto. Is characterized by.

With this configuration, the backrest defect detecting device 20 can be slid along the bar 84, and therefore, the position of the backlining portion 10 of the bag-shaped body 11 can be any position in the lateral direction. It is possible to deal with the above case, and it is possible to reliably detect the bonding failure of the backing part 10.

In the backing defect detecting device in the bag making apparatus according to the fourth aspect, the backing defect detecting device 20 and the slide member 77 are fixed so as to be vertically slidable.

As a result, the backing defect detecting device 20 can be fixed by sliding the slide member 77 in the vertical direction,
Therefore, the height position of the detection main body of the backing defect detection device 20 can be arbitrarily set, and even if the position of the backing portion 10 of the bag-shaped body 11 in the height direction is displaced, the backing portion 10 can be attached. It is possible to surely detect a defective connection.

In the backing defect detecting device in the bag making apparatus according to the fifth aspect, the support column 8 supporting the bar 84 is provided.
2, 83 can be attached to arbitrary positions in the direction of the manufacturing line of the bag manufacturing apparatus 1.

As a result, the bag-making apparatus 1 can be attached at any position in the direction of the manufacturing line, and defective bonding can be detected at any position of the backing portion 10 on which the bag-shaped body 11 is formed. The backing defect detection device 20 can be installed at a plurality of locations, and the bonding defect of the backing portion 10 can be reliably detected.

According to another aspect of the backing defect detecting device of the bag making apparatus of the present invention, there is provided a rotating plate 22 which is rotatably supported.
The detection body is composed of a substantially L-shaped connecting plate 31 fixed to the lower part of the rotating plate 22 so as to be slidable in the vertical direction, and a detecting body 40 attached to the connecting plate 31. I am trying.

As a result, the connecting plate 31 can be fixed by sliding it in the vertical direction with respect to the rotating plate 22, so that it can be adapted to the gusset of the bag-shaped body 11 and is related to the size of the gusset of the bag-shaped body 11. Instead, it is possible to reliably detect a defect in the backrest portion 10.

[0028]

BEST MODE FOR CARRYING OUT THE INVENTION (First Embodiment) A first embodiment of the present invention will be described in detail below with reference to the drawings. Since the bag-making apparatus 1 itself is the same as the conventional one, the description of the bag-making apparatus 1 is omitted, and the backing defect detection apparatus 20 which is the gist of the present invention will be described in detail.

FIG. 1 is a front view of the backing defect detection device 20, and FIG. 2 is a side view of the backing defect detection device 20.
The backing defect detection device 20 is arranged above the center of the bag-shaped body 11 molded in the bag manufacturing device 1 as shown in FIG. The back defect detection device 20 is arranged on the bag making device 1 side, and a belt-shaped rotating plate 22 is arranged on the front surface of a flat plate-shaped base plate 21. The base plate 21 is provided in a case body described later.

The rotating plate 22 has a pin 23 or bolts and nuts at a substantially central portion in the longitudinal direction of the base plate 21.
It is rotatably attached to. Also, the rotating plate 22
A rectangular parallelepiped projection 24 is integrally provided on the front surface of the upper part of the, and a locking projection 25 is provided on the upper surface of the projection 24. The locking protrusion 25 has a coiled spring 2
One end 26a of 6 is locked, and the other end 26b of the spring 26 is hooked and locked in a locking hole 27 or a locking hole 28 formed in the case body side.

Although the other end 26b of the spring 26 is locked by the locking holes 27 and 28,
Needless to say, a protrusion may be used as long as it can be hooked and locked.

A substantially L-shaped connecting plate 31 is connected to the lower part of the rotating plate 22.
One vertical piece 32 has a long slit 33 formed in the vertical direction. The butterfly type bolt 34 is inserted through the hole 36 of the rotating plate 22 through the slit 33, the nut 35 is screwed to the bolt 34 on the rear side of the rotating plate 22, and the connecting plate 31 is connected to the rotating plate 22. It is fixed so that it can move vertically. The connecting plate 31 is fixed to the rotating plate 22 with two bolts 34 so as not to swing to the left and right.

At the tip of the horizontal piece 37 of the connecting plate 31, a disc-shaped detector 40 is provided by a bolt 41 and a nut 42. The detector 40 may be fixed to the horizontal piece 37, or the detector 40 may be rotatably attached to the horizontal piece 37 via a pin or a bearing (both not shown). You can As the material of the detection body 40, a lightweight material such as an aluminum plate may be used, or a synthetic resin material such as vinyl chloride having a thickness of about 1 mm may be used. Further, the detection body 40 made of vinyl chloride may be rotatably provided on the connecting plate 31 with a pin or a bearing.

On the other hand, on both sides of the upper part of the rotary plate 22, rightward tilt detection sensors 43, which are limit switches, are provided.
A left tilt detection sensor 45 is provided. Actuator 4 of right tilt detection sensor 43 and left tilt detection sensor 45
The tip ends of the portions 4 and 46 are close to the side surface of the protrusion 24 of the rotating plate 22. It should be noted that the rotating plate 22 shown in FIG. 1 shows a state in which the rotating plate 22 is hung down straight except for the spring force of the spring 26. The right tilt detection sensor 43 and the left tilt detection sensor 45 are provided in a case body described later.

A switch box 50 is provided on the outer surface of the case body.
A right-turn off switch 51 and a left-turn off switch 52 are provided above and below. These off switches 51,
52 will be described later.

FIG. 6 is an electrical block diagram of the backing defect detection device 20. As will be described later, the right tilt detection sensor 4 is detected.
3 or the control section 53 which receives the defect detection signal of the backing section 10 from the leftward tilt detection sensor 45 notifies the operator of the bag making apparatus 1 of that fact by the buzzer 54 and the lamp 55.

In the normal state, the right tilt detection sensor 43
Alternatively, the left tilt detection sensor 45 detects whether or not the backing portion 10 of the bag-shaped body 11 has a bonding failure.
Do not ring the buzzer 54 etc. before setting
The right tilting off switch 51 and the left tilting off switch 52 are provided in order to not drive the buzzer 54 and the lamp 55. That is, before setting the detection body 40, the right tilting off switch 51 or the left tilting off switch 52 is operated so that the buzzer 54 or the like does not ring, and after setting, the right tilting off switch 51 or the left tilting off switch 5 is set.
2 is operated and returned to drive when a defect in the back tension portion 10 is detected.

FIG. 3 shows a case in which the backing portion 10 of the bag-shaped body 11 is tilted to the right. In order to detect a defect in the backing portion 10 when tilting to the right, the backing defect detection device 20, that is, the detector 40 is detected. The figure shows a state in which is set. When setting this state, first, the other end 26b of the spring 26, which is locked on the upper part of the rotary plate 22 which is rotatable about the pin 23, is engaged with the one locking hole 27 of the base plate 21. Stop. Then, the rotating plate 22 is once rotated counterclockwise about the pin 23 as an axis against the pulling force of the spring 26, and then the rotating plate 22 is returned in the clockwise direction, and the tip of the lower detection body 40 is moved. Is inserted inside the backing portion 10 of the bag-shaped body 11.

In this state, the rotating plate 22 is urged in the clockwise direction by the spring force (pulling force) of the spring 26 about the pin 23, whereby the detecting body 40 moves inside the back tension portion 10. I am biased. Bag-shaped body 1 shown in FIG.
Since the first backing portion 10 is normally formed, the inner base portion of the backing portion 10 is closed and the movement of the detection body 40 is restricted. In addition, the protrusion 2 on the upper part of the rotating plate 22
4 is pressing the actuator 44 of the right tilt detection sensor 43, whereby the right tilt detection sensor 43 is turned on,
Or the normal signal of OFF is output.

The bag-like body 11 continuously flows and the back portion 10
When the edge of the sheet 3 is displaced due to the meandering of the sheet 3 or the like, the edge is displaced and the backing portion 10 cannot be normally formed. In such a case, the edges on both sides cannot be bonded, and the slit 74 as shown in FIG. 18 is formed. As a result, as shown in FIG. It is moved inward by the spring force of the spring 26 (see the position from the two-dot chain line to the solid line of the detection body 40 shown in FIG. 4).

When the detector 40 moves to the left as shown in FIG. 4, at the same time, the rotary plate 22 rotates clockwise about the pin 23 by the pulling force of the spring 26, and the rotary plate 22 moves. The protrusion 24 separates from the actuator 44 of the tilt-down detection sensor 43. When the actuator 44 returns, the rightward tilt detection sensor 43 outputs an OFF or ON signal, and the control unit 53 sends this signal to the back tension unit 10.
It is judged as a defect detection signal of the buzzer 54 or the lamp 55.
The operator is notified by means such as.

Here, as the type of notification, the buzzer 54
Only, or only the lamp 55, and the notification may be made at the same time. The color of the lamp 55 is, for example,
The red color may be turned on or blinked. Furthermore, a voice LSI or the like may be used to notify the operator of a defect in the backrest portion 10 by voice. In addition, when a defect in the back portion 10 is detected, as shown in FIG.
You may make it output the stop signal which stops the bag making apparatus 1 whole.

When a defect in the back cover 10 is detected,
An operator manually adjusts the sheet 3 so that the meandering of the sheet 3 is eliminated, or the bag making apparatus 1 is temporarily stopped to adjust the sheet 3 so that the backing portion 10 is formed.

In the case of FIGS. 3 and 4, the bag-shaped body 11 is used.
When the backrest portion 10 is tilted to the right and the backrest portion 10 is tilted to the left, it is necessary to dispose the detection body 40 to the left of the backrest portion 10. In order to arrange the detection body 40 to the left of the backing portion 10, first, the other end 26b of the spring 26 locked in the locking hole 27 on the case body side is removed from the locking hole 27, and the spring 26 The other end 26b is locked in the other locking hole 28 as shown in FIG. 5 (a).

The other end 26b of the spring 26 is provided with a locking hole 28
When the rotation plate 22 is locked to, the rotating plate 22 is urged to rotate counterclockwise about the pin 23 by the pulling force of the spring 26. Then, the tip of the detection body 40 (right side portion)
Is inserted inside the backrest 10 that is tilted to the left, the detector 40 is regulated by the backrest 10, and the rotating plate 22 maintains that state. In this state, as shown in FIG. 5A, the side surface of the protrusion 24 on the upper portion of the rotating plate 22 is tilted to the left and pressed against the actuator 46 of the detection sensor 45 to turn the internal contact on or off to turn the back of the back. A signal indicating that the tension portion 10 is normal is output.

When a defect in the backrest portion 10 is detected,
Similarly to the above, the detection body 40 is released from the restriction and the detection body 40 is released.
Enters into the bag-shaped body 11, and accordingly, the rotating plate 22 rotates in the counterclockwise direction, and the protrusion 24 separates from the actuator 46. As a result, the internal contact of the leftward tilt detection sensor 45 is turned off or on, and outputs a signal to the control portion 53 indicating that the backrest portion 10 is defective. In the control unit 53,
The operator is informed by the buzzer 54 or the like as in the above.

As described above, according to the present embodiment, when the tilting direction of the backing portion 10 of the bag-shaped body 11 is changed from right tilting or left tilting to left tilting or right tilting, the other end 26b of the spring 26 is set to one side. It suffices to engage the locking hole 27 of the other side with the locking hole 28 of the other side, and the back tension portion 10 can be easily and one-touched without disassembling and setting the device as in the conventional case.
It can be set according to the direction of tilting. Further, since the backing defect detection device 20 can be set with one touch according to the tilting direction of the backing portion 10, even if the tilting direction is changed frequently during the day, the efficiency of bag making work can be significantly improved. it can. Further, the cost of the back defect detection device 20 can be manufactured at low cost.

It is to be noted that the defective products of the bag-shaped body 11 due to the defect of the backing portion 10 can be significantly reduced by both the defect detection of the back defect detection device 20 and the visual inspection by the operator. .

When the right tilt detection sensor 43 or the left tilt detection sensor 45 is not used depending on the rotating direction of the rotary plate 22, the right tilt off switch 51 or the left tilt off switch 52 is operated. Therefore, the buzzer 54 and other unnecessary sounds are avoided.

By the way, the sheet 3 forming the bag-shaped body 11
As the material of the sheet 3, a film made of a synthetic resin, a paper material such as western paper or Japanese paper, or aluminum may be used.
The thickness and width of the back cover vary widely, and even in such a case, it is necessary to apply the backing defect detection device 20 of the present invention. Further, there are various widths of the backrest portion 10.

Therefore, since the vertical position of the backing portion 10 also changes depending on the gazette width of the bag-shaped body 11, the bolts 34 and the nuts 35 are loosened so that the connecting plate 31 and the detection body 40 are vertically moved. It can be fixed at any position. In addition, when the thickness of the bag-shaped body 11, that is, the thickness of the back covering portion 10 is very thin, it may be difficult to insert the detection body 40 having a large thickness inside the back covering portion 10. In such a case, the thin detection body 4 according to the thickness of the backing portion 10
By using 0, it is possible to detect a defect in the back portion 10. Since the detection body 40 is provided with the bolts 41 and the nuts 42, the detection body 40 can be easily replaced.

Further, the position of the backing portion 10 of the bag-shaped body 11 is not limited to the central portion as in the above-mentioned embodiment, and the position shown in FIG.
Further, as shown in FIG. 8, it may be positioned at the right or left end of the bag-shaped body 11. Even in such a case, the backing defect detection device 2 arranged on the bag making device 1 side
It can be easily dealt with by moving 0 to the left and right.

In the above embodiment, the detecting body 40 is connected to the rotating plate 22 via the connecting plate 31, but the detecting body 40 may be integrated at the tip of the connecting plate 31, or the connecting plate 31 may be integrated. It is also possible to integrally provide plate bodies on both sides of the tip of the plate, and form the tip of the plate in an arc shape so as to be used as a substitute for the detector 40.

Further, in the above-described embodiment, the movement of the detection body 40, that is, the rotation of the rotating plate 22 is performed by the right tilt detection sensor 43 and the left tilt detection sensor 45 from the limit switch, but not limited to the limit switch. For example, an optical sensor or the like may be used to detect a defect in the backing portion 10.

(Second Embodiment) Next, a second embodiment will be described with reference to FIGS. In the previous embodiment,
When the backing portion 10 of the bag-shaped body 11 is tilted rightward or leftward, the other end 26b of the spring 26 is hooked on the other locking hole 27 or 28. By using the two springs 26 and 29, the turning plate 22 is simply tilted rightward or leftward so as to correspond to the tilting direction of the back tension portion 10.

That is, two springs 26 and 29 having the same tensile force are used, one spring 26 is arranged in the same manner as in the previous embodiment, and one end 29a of the other spring 29 is engaged with the rotary plate 22 side. The other end 29b is locked in the locking hole 28. It should be noted that the other ends 26b and 29b of the springs 26 and 29 are not limited to the hole shape as in the previous embodiment, but may be the protrusion-shaped ones.

As shown in FIG. 9, two springs 2
Since 6 and 29 have the same pulling force, the rotation plate 22 maintains its posture in the vertical direction about the pin 23 as an axis. Then, when the backing portion 10 of the bag-shaped body 11 is tilted to the right as shown in FIG. 10, the rotating plate 22 is tilted counterclockwise about the pin 23 and the tip of the detection body 40 is placed on the back. It is inserted inside the tension portion 10. In this state, the rotating plate 22 is biased in the clockwise direction by the pulling force of the spring 26, and the defect of the back tension part 10 is detected by the detection body 40 as in the previous embodiment. Further, the other spring 29 is in a slightly slackened state, and does not hinder the spring 26.

When the backing portion 10 of the bag-shaped body 11 is tilted to the left as shown in FIG. 11, the rotating plate 22 is used.
Is urged to the right to insert the detection body 40 inside the back tension portion 10. The pulling force of the spring 29 urges the rotating plate 22 counterclockwise about the pin 23, and the detection body 40 urges the inside of the back tension portion 10 to detect a defect in the back tension portion 10. is doing. In this state, the other spring 26 is in a loosened state, and the spring 29
Does not adversely affect

As described above, in the present embodiment, the two springs 26 and 29 are used to rotate the bag-like body 11 in the direction opposite to the direction in which the backing portion 10 is tilted, and the detector 4 is rotated.
The defect detection of the back tension part 10 can be set only by inserting the tip of 0 into the back tension part 10. Therefore, by simply rotating the rotating plate 22 to the right or left, anyone can easily and immediately set the backing defect detection device 20.

As a result, as in the previous embodiment, the set time of the detector 40 of the backrest defect detection device 20 is extremely short as compared with the time for manufacturing one lot of the bag-shaped body 11, and the bag-making process is performed. The work efficiency of can be greatly improved. Further, unlike the conventional backing defect detection device, no special technique is required even when resetting, and for example, even a part-timer can easily and quickly perform it.

Next, the mounting structure of the backing defect detection device 20 in each of the above embodiments of the present invention to the bag making device 1 will be described. As shown in FIG. 12 and FIG. 13, the box-shaped case main body 38 is used to install and arrange the upper part of the rotating plate 22, the right tilt detection sensor 43, the left tilt detection sensor 45, the switch box 50, and the like. A substantially U-shaped fixing piece 76 is fixed to the side surface of the case body 38. A slide member 77 is slidably inserted in the fixing piece 76 in the vertical direction.
The positioning of 7 is performed by bolts 79. Also,
A fixing portion 80 having a substantially U-shaped cross section is integrally formed in the lower portion of the slide member 77, and a groove 81 having an opened side surface is formed in the fixing portion 80.

On the other hand, as shown in FIG. 12, a pair of support columns 82 and 83 are attached to both sides of the bag making apparatus 1, and the support column 8 is provided.
A plate-shaped bar 84 is bridged between the upper portions of the two and 83. The groove 81 of the slide member 77 is fitted into the bar 84, and the fixing portion 80 is slidably moved in the lateral direction of the bar 84 via the groove 81. A screw hole 86 is threaded on both sides of the upper piece 85 of the fixing portion 80, and a bolt 87 can be moved back and forth in the screw hole 86.

The fixed portion 80 of the slide member 77 is attached to the bar 84.
The fixing portion 80 is fixed to the bar 84 by sliding it to a predetermined position (detection position corresponding to the backing portion 10 of the bag-shaped body 11) along the direction and screwing the bolt 87.
That is, the position of the detection body 40 of the backrest defect detection device 20 can be set. Further, the height position of the detection body 40 is
By sliding the slide member 77 up and down and tightening the bolt 79 at a predetermined position, the height position of the detection body 40 can be set.

The height position of the detection body 40 is adjusted by loosening the bolt 34 and the nut 35 connecting the rotating plate 22 and the connecting plate 31 and sliding the connecting plate 31 up and down. be able to. In addition, the slide member 77
When the case is slidable in the vertical direction with respect to the case body 38, the connecting plate 31 and the rotating plate 22 may be integrated. Further, when the height adjustment in the vertical direction is performed by the connecting plate 31 and the rotating plate 22, the slide member 77 may be fixed to the case body 38 side. The height of the detection body 40 may be adjusted by using either of the above or both.

This makes it possible to set the horizontal position and the vertical position of the detector 40 of the back defect detection device 20 at arbitrary positions. Therefore, the size of the bag-shaped body 11 and the position of the backing portion 10 (the bag-shaped body 11
No matter where the center, the right end, or the left end) of the back is made, it is possible to perfectly deal with it, and it is possible to reliably detect a defect in the backing part 10.

The position of the backing defect detecting device 20 in the longitudinal direction of the bag making apparatus 1 is determined by the mounting positions of the columns 82 and 83. Therefore, the columns 82 and 83 are, for example, bolts and the like, and the bag making apparatus 1 side. It can be easily attached to. Therefore, the columns 82 and 83 can be attached to any position in the longitudinal direction of the bag manufacturing apparatus 1 (the flow direction in the production of the bag-shaped body 11), and therefore,
The backing defect detection device 20 can be installed at an arbitrary position in the longitudinal direction of the bag making device 1.

The backing defect detection device 20 may be installed at any mounting position (installation position).
For example, it may be provided at the rear stage of the pull-out rollers 12 and 13 shown in FIG.
One or more may be installed. It should be noted that in FIG. 14, the structure and operation of the members, rollers, etc. for forming the gusset of the bag-shaped body 11 are well known and therefore omitted.

By thus installing the backing defect detection device 20 at an arbitrary position, the bag-shaped body 1 at each manufacturing stage is
It is possible to reliably detect a defect in the backing portion 10 of No. 1 and the bag-shaped body 1
The degree of perfection as a product of No. 1 can be greatly enhanced.

[0069]

According to the backing defect detecting device in the bag making apparatus of the first aspect of the present invention, even when the tilting direction of the backing part of the bag-shaped body is changed to rightward or leftward,
By simply locking the other end of the spring to the right or left centering on one end of the spring, the biasing direction of the detection main body is made to correspond to the tilting direction of the back tension part, and the back tension part is not damaged. It can be detected. Therefore, even if the tilting direction of the backing portion is changed, the backing failure detection device can be set with one touch, and the working efficiency of bag making can be greatly improved. Also, the cost can be reduced.

According to the backing defect detecting device in the bag making apparatus of the second aspect, even when the tilting direction of the backing portion of the bag-shaped body is changed to rightward or leftward, the detection main body is merely clockwise. , Or counterclockwise and inserting the lower part of the detection body into the inside of the backing part of the bag-like body, the biasing direction of the detection body corresponds to the tilting direction of the backing part, The defect can be detected. Therefore, even if the tilting direction of the backing portion is changed, the backing failure detection device can be set with one touch, and the working efficiency of bag making can be greatly improved. Also, the cost can be reduced.

According to the backing defect detecting device in the bag manufacturing apparatus of claim 3, the backing defect detecting device according to claim 1 or 2, and the bag manufacturing device above the bag manufacturing device. Since it is composed of a bar arranged along the lateral direction and a slide member which is slidably arranged along the longitudinal direction of the bar and to which the backrest defect detecting device is attached, the bar is arranged along the bar. Since the backing defect detection device can be slid and installed, it is possible to deal with any position of the backing part of the bag-shaped body in the lateral direction, and it is possible to reliably bond the backing part. It is something that can be detected.

According to the backing defect detecting device in the bag manufacturing apparatus of the fourth aspect, since the backing defect detecting device and the slide member are fixed so as to be slidable in the vertical direction, the slide member can be moved in the vertical direction. The backing defect detection device can be fixed by sliding it. Therefore, the height position of the detection body of the backing defect detection device can be set arbitrarily, and even if the position of the bag-like backing part in the height direction shifts Thus, it is possible to reliably detect the bonding failure of the back lining part.

According to the backing defect detecting device in the bag making apparatus of the fifth aspect, the support pillars for supporting the bar are
Since it can be attached at any position in the direction of the bag making machine production line, it can be attached at any position in the direction of the bag making machine production line, and which part of the backing part where the bag-shaped body is formed However, the bonding failure can be detected, and the backing failure detection device can be installed at a plurality of locations, so that the bonding failure at the backing portion can be reliably detected.

According to the backing defect detecting device in the bag manufacturing apparatus of the sixth aspect, a rotating plate pivotally supported is provided,
Since the detection body is composed of a substantially L-shaped connecting plate that is vertically slidably fixed to the lower part of the rotating plate and a detecting body mounted on the connecting plate, the connecting plate is rotated. Since the plate can be slid in the vertical direction and fixed, it is possible to deal with the bag-shaped gusset, and it is possible to reliably detect a defect in the backing portion regardless of the size of the bag-shaped gusset.

[Brief description of drawings]

FIG. 1 is a front view of a back defect detection device according to a first embodiment of the present invention.

FIG. 2 is a side view of the back defect detection device according to the first embodiment of the present invention.

3 (a) and 3 (b) are a front view and a plan view in the case of performing a defect detection of a rightward-backed upholstery portion according to the first embodiment of the present invention.

FIG. 4 is an operation explanatory diagram in the case where a defect in the back lining portion is detected in the first embodiment of the present invention.

5 (a) and 5 (b) are a front view and a plan view in the case of detecting a defect in the left-sided back lining portion according to the first embodiment of the present invention.

FIG. 6 is a block diagram according to the first embodiment of the present invention.

FIG. 7 is an explanatory diagram in the case where the backing portion is formed on the right end side in the first embodiment of the present invention.

FIG. 8 is an explanatory diagram in the case where the backing portion is formed on the left end side in the first embodiment of the present invention.

FIG. 9 is a front view of a back defect detection device according to a second embodiment of the present invention.

10 (a) and 10 (b) are a front view and a plan view, respectively, in the case of detecting a defect in a rightward lining part according to the second embodiment of the present invention.

11 (a) and 11 (b) are a front view and a plan view in the case of detecting a defect in a left-backed back lining portion according to the second embodiment of the present invention.

FIG. 12 is an explanatory diagram of a case where the backing defect detection device according to the embodiment of the present invention is attached to the bag making device side.

FIG. 13 is an explanatory diagram of a case where the backing defect detection device according to the embodiment of the present invention is attached to the bag making device side.

14 (a) and 14 (b) are a side view and a plan view of the bag manufacturing apparatus.

FIG. 15 is a perspective view of a bag-shaped body.

FIG. 16 is an enlarged cross-sectional view of an essential part of the backing portion of the bag-shaped body.

FIG. 17 is a cross-sectional view of the bag-shaped body when the back lining is normally formed.

FIG. 18 is a cross-sectional view of the bag-shaped body in the case where a backing portion has a bonding defect.

FIG. 19 is a plan view of a conventional backing defect detection device.

FIG. 20 is a side view of a conventional backing defect detection device.

[Explanation of symbols]

1 bag making device 3 sheets 10 Back part 11 bags 20 Back defect detection device 21 base plate 22 Rotating plate 23 pin 24 Projection 26 spring 26a One end 26b the other end 27 Locking hole 28 Locking hole 29 spring 29a One end 29b the other end 31 Connection plate 40 detector 43 Right tilt detection sensor 44 Left tilt detection sensor 77 Slide member 82 prop 83 props 84 bar

Claims (6)

[Claims] 1. A bag-shaped body via a backing portion (10) formed by folding a sheet (3) by a bag-making device (1) and adhering edges on both sides of the sheet (3). A backing defect detecting device in a bag manufacturing apparatus for forming a backing portion (10) of the bag-shaped body (11), wherein the backing portion of the bag-shaped body (11) is detected. A detection body that is rotatably arranged above (10) and has a lower side inserted and arranged inside the backing portion (10), and one end (26a) is locked to the upper part of the detection body and the other end ( 26b) is locked to either side of the detection body to urge the detection body in the clockwise or counterclockwise direction, and a back for detecting the inclination of the detection body. Back defect detection device (20) together with sensors (43) (45) for detecting bonding failure of the tension part (10) An apparatus for detecting backing defects in a bag manufacturing apparatus, characterized in that 2. A bag-like body through a backing portion (10) formed by folding a sheet (3) by a bag-making device (1) and adhering edges on both sides of the sheet (3). A backing defect detecting device in a bag manufacturing apparatus for forming a backing portion (10) of the bag-shaped body (11), wherein the backing portion of the bag-shaped body (11) is detected. A detection body which is rotatably arranged above (10) and whose lower side is inserted and arranged inside the backing portion (10), and one ends (26a) (29a) of which are locked to the upper part of the detection body, respectively. , The other end (26b) (2
Springs (26) and (29) for locking the detection body 9b) to both sides of the detection body and biasing the detection body clockwise or counterclockwise, and detecting the inclination of the detection body. A backing defect detecting device in a bag manufacturing apparatus, comprising a backing defect detecting device (20) comprising sensors (43) (45) for detecting a bonding defect of a backing portion (10). 3. A backing defect detection device (20) constructed according to claim 1 or 2, and arranged above the bag making device (1) along the lateral direction of the bag making device (1). Bar (8
4) and the backrest defect detecting device (2), which is slidably arranged along the longitudinal direction of the bar (84).
0) A slide member (77) for attaching the backing defect detection device in a bag making device. 4. The backing defect detection device according to claim 3, wherein the backing defect detection device (20) and the slide member (77) are fixed so as to be vertically slidable. apparatus. 5. A column (8) supporting the bar (84).
2. The backing defect detection device in the bag making apparatus according to claim 3 or 4, wherein the (2) (83) can be attached to any position in the direction of the production line of the bag making apparatus (1). . 6. A rotating plate (22) rotatably supported by a shaft,
A substantially L-shaped connecting plate (31) fixed to the lower part of the rotating plate (22) so as to be vertically slidable, and the connecting plate (3).
The backing defect detection device in the bag manufacturing apparatus according to any one of claims 1 to 5, wherein the detection body is configured with a detection body (40) attached to 1).