JPH06298231A - Roll-shaped packaging material in automatic weighing and packaging apparatus and defective packaging material removal apparatus for the roll-shaped packaging material - Google Patents

Abstract

(57) [Abstract] [Purpose] It is possible to easily confirm and remove defective packaging materials with joints at the stage of automatic weighing and packaging equipment without relying on the operator's visual inspection. [Structure] Long-term roll-shaped packaging material 1 midway joint 3
While the aluminum vapor deposition tape 5 different from the material of the roll-shaped packaging material 1 is attached, the aluminum proximity tape for detecting the aluminum vapor deposition tape 5 attached to the joint part 3 of the roll-shaped packaging material 1 is attached to the automatic weighing and packaging device 8. A switch 33 is provided, the detection signal of the aluminum proximity switch is communicated to the control device of the automatic weighing and packaging device 8, and the control signal is output from the control device to the automatic weighing and packaging device 8 according to the detection signal of the aluminum proximity switch 33. I decided to do it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll-shaped packaging material in an automatic weighing and packaging apparatus for weighing and packaging, and a defective packaging material removing apparatus for the roll-shaped packaging material.

[0002]

2. Description of the Related Art Conventionally, an automatic weighing and packaging apparatus for weighing and packaging has used a tubular packaging material made of a laminated film having a high gas barrier property. This packaging material is prepared to be used as a roll-shaped raw material after being formed into a long flat shape. Then, in the automatic weighing and packaging apparatus, at the time of packaging, the roll-shaped raw fabric is cut into an arbitrary length, and at the same time, the bottom portion is sealed and packaged. By the way, it is preferable to continuously supply the roll-shaped packaging material as much as possible in order to maintain the operation rate of the line of the automatic weighing and packaging apparatus.
It has a long shape of 500 m. In addition, this roll-shaped packaging material is printed on each package, and when printing deviation of the package occurs on one original fabric, it is cut in the middle of the original fabric and a new original fabric is joined to form a 400 It is formed in a long shape of about 500 m.

[0003]

However, when packaging is performed with the above-described roll-shaped packaging material, the packaging material corresponding to the joint portion of the original fabric is a defective packaging material that impairs airtightness. The only way to remove this defective packaging material was to rely on visual confirmation by the operator. If this defective packaging material cannot be removed reliably, there is a risk that the contents will be scattered due to the rupture of the package, etc., and in a fully automatic shipping system, defective products may not be found and may reach the end user. is there.

In view of the above problems, the present invention makes it possible to easily confirm and remove a defective packaging material having a joint at the stage of an automatic weighing and packaging apparatus without relying on the operator's visual observation. An object of the present invention is to provide a packaging material and an apparatus for removing defective packaging material of the roll packaging material.

[0005]

In order to achieve the above object, the present invention has the following constitution.

[0006] A long roll-shaped packaging material used in an automatic weighing and packaging apparatus for weighing and packaging, wherein a tape different from the material of the roll-shaped packaging material is attached to the joint portion of the long roll-shaped packaging material. By doing so, a means for solving the above-mentioned problems was obtained.

Further, in the case of a roll-shaped packaging material excluding the aluminum-vapor-deposited packaging material, the tape is an aluminum vapor-deposited tape, and in the case of a roll-shaped packaging material having a high reflection amount, the tape is lower than the reflection amount of the roll-shaped packaging material. The above means becomes more effective by using a matte tape.

Further, as another means, the above means becomes more effective by forming a hole through which light is transmitted in the joint portion of the long roll-shaped packaging material.

On the other hand, in the defective packaging material removing device of the automatic weighing and packaging device, the automatic weighing and packaging device is provided with a detecting portion for detecting a tape attached to the joint portion of the roll-shaped packaging material or a hole formed in the joint portion. The detection signal of the detection unit is communicated to the control device of the automatic weighing and packaging device, and the control signal is output from the control device to the automatic weighing and packaging device according to the detection signal.

Then, the control signal from the control device is
The filling nozzle mechanism that fills the packaging bag with the article to be packaged and the packaging bag supply mechanism that sets the packaging bag directly below the filling nozzle mechanism, and stops the filling nozzle mechanism, and the packaging bag supply mechanism is By discharging the defective packaging bag, a means for solving the above problem is provided.

[0011]

The roll-shaped packaging material used in the automatic weighing and packaging apparatus is pulled out from the wound tube and conveyed by the supply belt of the bag making apparatus, then cut and sealed.
It is formed into a packaging bag of a predetermined size. The packaging bag is sent to the bag packing device, and the powdery particles or the like weighed by the weighing device are packed in the packing bag, and then the opening is sealed.

In the above-mentioned roll-shaped packaging material, since a tape different from the material of the roll-shaped packaging material is attached to the joint part in the middle of the roll-shaped packaging material, the packaging bag is formed from the bag-making device. During the transportation to the packing device, it is confirmed whether the packaging bag is a good product or a defective product. That is, in the automatic weighing and packaging device, a device (sensor) that detects a tape different from the material of the roll-shaped packaging material may be provided in the preceding step of packing the powder or the like into the packaging bag, and especially rolls excluding aluminum vapor deposition. When using a roll-shaped wrapping material, this tape is an aluminum vapor-deposited tape, or when using a roll-shaped wrapping material with a high reflection amount, the tape is a matte tape with a lower reflection amount than the roll-shaped wrapping material, By clarifying the difference from the shape packaging material, it is possible to detect the defective packaging material accurately without selecting a highly accurate sensor.

By the way, the tape may be attached at the time of joining in the middle of the roll-shaped packaging material, and it is possible at the same time as joining.

Then, the detection signal from the sensor outputs a control signal from the control device to the automatic weighing and packaging device, and the filling nozzle mechanism for filling the packaging bag with the article to be packaged is stopped by the control signal, and the packaging bag is filled with the filling bag. The packaging bag supply mechanism set immediately below the nozzle mechanism releases the packaging bag, and the defective packaging material can be easily removed by the automatic weighing and packaging apparatus.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, a roll-shaped packaging material 1 is obtained by flattening a tube 2 such as a plastic film and winding it, and a plurality of original fabrics 2A and 2B are joined through a joining portion 3 to obtain a length of 400 to 500 m. It has a scale. Then, the roll-shaped packaging material 1 is printed with the photomarks 4 at regular intervals, and a packaging bag cut into an arbitrary length is formed by detecting the photomarks 4 during packaging. FIG. 2 is a perspective view of the defective packaging bag 6. The photo mark 4 of the roll-shaped packaging material 1 is detected by a photoelectric sensor, cut into an arbitrary length, and the bottom portion 7 is sealed to form a packaging bag. The defective packaging bag 6 has an original fabric joint 3 at the center in the longitudinal direction, and an aluminum vapor deposition tape 5 made of a different material from the tube 2 is attached to the joint 3.

Next, the automatic weighing and packaging apparatus 8 using the above-mentioned roll-shaped packaging material will be described. In FIG. 3, the automatic weighing and packaging apparatus 8 includes a weighing tank 1 having a supply port 9 at an upper portion.
0, a weighing device 11 including a weighing mechanism (not shown), and a bag-making device 12 including a lower sealing mechanism and a cutter,
It is constituted by the bag filling device 13. The roll-shaped packaging material 1 made of a plastic film or the like having the aluminum vapor deposition tape 5 attached to the joint portion 3 is attached to the start end side of the bag making device 12.

The bag making apparatus 12 will be described in detail below. The bag making device 12 draws the tube 2 from the roll-shaped packaging material 1,
The guide roller 14 and the pair of feed rollers 15 convey the bag making apparatus 12 toward the end portion (see FIG. 4).
The tube 2 is conveyed on an endless supply belt 16. That is, the drive roller 22 is rotated by the drive belt 21 that is stretched between the supply belt drive motor 18 fixed to the bag making unit 17, the pulley 19, and the pulleys 20 and 20 that drive the feed roller 15. Supply belt 1
Reference numeral 6 denotes a guide roller 24 axially attached to the body frame 23 of the bag making apparatus 12, a guide roller 25 axially attached to the bag making unit 17, a feed roller 15 and the driving roller 2
It rotates by 2 and conveys the tube 2.

A lower seal base 26 having a heater and a fixed cutter blade 27 are horizontally provided in the recess (bent portion) of the supply belt 16, and the tube 2 has upper end portions of the lower seal base 26 and the fixed cutter blade 27. Be transported. Sandwich tube 2,
Above the lower seal base 26, a lower seal cylinder 28 is provided.
Thus, a cushion plate 29 that moves up and down is provided, and above the fixed cutter blade 27, a movable cutter blade 31 that moves up and down by a cutter cylinder 30 is provided downward.

A photoelectric sensor 3 is provided at the entrance of the bag making unit 17.
2, the photo marks 4 printed on the tube 2 at regular intervals are detected. Further, an aluminum proximity switch 33 is provided at the outlet of the bag-making unit 17, and the tube 2
The aluminum vapor deposition tape 5 attached to the joint 3 in the middle is detected. A leading end detection sensor (not shown) of the packaging bag faces the end portion of the bag making apparatus 12, and an upper suction cup 35 and a lower suction cup 3 which move up and down by a suction cup cylinder 34.
6 are provided so as to face each other, and further, an air jetter 37 for injecting high pressure air into the packaging bag is rotatably provided by an air jetter cylinder 38.

Next, the bag packing device 13 will be described in detail. A discharge hopper 39 is provided below the weighing tank 10, and the discharge hopper 3
A filling nozzle mechanism 40 is provided by being connected to the lower end of 9. Below the filling nozzle mechanism 40, a bottom raising mechanism 42 composed of a vertically movable bottom plate 41 for supporting the bottom of the packaging bag is provided. A packaging bag including a chuck arm 44 and a chuck arm cylinder 45, which opens a packaging bag at the end of the bag making device 12 on a side of the filling nozzle mechanism 40 to a pair of chucks 43 and sets it directly below the filling nozzle mechanism 40. A bag supply mechanism 46 is provided. Reference numeral 47 is a seal base, and 48 is a cushion plate.

The operation of the above embodiment will be described below. The roll-shaped packaging material 1 pulls the tube 2 upward, passes through the guide roller 14, changes its traveling direction to horizontal, is supplied to the feed roller 15, and is smoothly conveyed on the supply belt 16. Tube 2 with supply belt 16
Is conveyed to the bag making unit 17, and at this time, the photoelectric sensor 32 provided at the entrance of the bag making unit 17 detects the photo mark 4 of the tube 2. This detection signal causes the supply belt drive motor 18 to be intermittently stopped, and at the same time, the drive of the feed rollers 15 and 15 and the supply belt 16 to be intermittently stopped to convey the tubes 2 to the bag making unit 17 for each package.

In the bag making unit 17, the cutter cylinder 3 is used.
With the extension of 0, the moving cutter blade 31 descends and the tube 2
The lower sealing cylinder 28 extends and the cushion plate 29 descends when the lower sealing base 2 is cut.
The heater of 6 heats red and the lower part is sealed, and a packaging bag is formed.

The packaging bag formed by the cut and seal is carried out from the bag making unit 17, passes beneath the aluminum proximity switch 33 provided at the outlet of the bag making unit 17, and the presence or absence of the aluminum vapor deposition tape 5 is detected. It At this time,
When the aluminum vapor deposition tape 5 is detected by the aluminum proximity switch 33, a control device (not shown) of the automatic weighing and packaging apparatus 8 stops all the driving devices by the detection signal, and means for contacting the operator is provided. If not, the defective packaging bag 6 to which the aluminum vapor deposition tape 5 is attached is the supply belt 1
It will be stationary on 6 and will be removed by the operator. If the aluminum vapor deposition tape 5 is not detected by the aluminum proximity switch 33, the packaging bag is determined to be non-defective and the process proceeds to the next step.

In the packaging bag that has passed through the aluminum proximity switch 33, a suction cup cylinder 34 extends in response to a signal from a tip detection sensor (not shown), and an upper opening is opened vertically by an upper suction cup 35 and a lower suction cup 36. The air jetter 37 blows air into the opening. Then, the flat packaging bag is inflated and set in the packaging bag supply mechanism 46.

In the packaging bag supply mechanism 46, the bag making device 1
The chuck arm cylinder 45 located on the second side contracts, the chuck arm 44 rotates downward, and the pair of chucks 43, 43 is opened. This chuck 43, 4
When 3 reaches the opening of the packaging bag, the chucks 43, 4
3 is closed, the opening of the packaging bag is held open, and the chuck arm cylinder 45 extends to rotate upward to set the packaging bag directly below the filling nozzle mechanism 40.

When the packaging bag is supplied to the bag filling device 13,
The filling nozzle is inserted into the opening of the packaging bag, the filling nozzle is opened, the gate of the weighing device 11 is driven, and the dispensing is performed.

On the other hand, the bottom plate 41 of the bottom raising mechanism 42 is raised to a predetermined position to prepare for the payout. When the dispensing is completed, the filling nozzle closes and the filling nozzle rises. Then, the bag mouth of the packaging bag is sealed by the sealing table 47, and when the sealing is completed, the bottom raising mechanism 42 descends and inclines forward, so that the package filled with the contents is transferred to a belt conveyor (not shown) or the like. Discharge up.

The joining portion 3 of the roll-shaped packaging material 1 in the present invention is not limited to the aluminum vapor deposition tape, and a matte tape having a reflection amount lower than that of the tube 2 is attached to clarify the difference from the material of the tube 2. You can wear it, and join 3
A hole through which light is transmitted may be formed. Similarly, the sensor provided at the outlet of the bag making unit 17 is the aluminum proximity switch 3
Not limited to 3, the gloss sensor, the transmissive photoelectric sensor, or the like can be appropriately selected according to the tape attached to the joint portion 3 as long as the joint portion 3 can be detected.

Further, the detection signal of the aluminum proximity switch 33 described above is communicated to a control device (not shown), and the control signal from the control device is output to the packaging bag supply mechanism 46 and the filling nozzle mechanism 40. By stopping the filling nozzle mechanism 40 and controlling the packaging bag supply mechanism 46 to discharge the defective packaging bag, the defective packaging bag 6 can be removed without depending on the operator. Hereinafter, the action of removing the defective packaging bag 6 by the packaging bag supply mechanism 46 and the filling nozzle mechanism 40 will be described in detail. The defective packaging bag 6 that has passed through the aluminum proximity switch 33 is inflated by the air jetter 37 and set in the packaging bag supply mechanism 46. In the packaging bag supply mechanism 46, the chuck arm cylinder 45 contracts, the chuck arm 44 rotates downward, and the pair of chucks opens. When the chucks 43, 43 reach the opening of the defective packaging bag 6, the chucks 43, 43 are closed and hold the opening of the defective packaging bag 6 with the opening open, and the chuck arm cylinder 45 extends to rotate upward. To do. At this time, a control device (not shown) controls each of the chucks 43 and 43 so as to open and the filling nozzle mechanism 40 not to open by the detection signal of the aluminum proximity switch 33. The defective packaging bag 6 drops from the chucks 43, 43 and is removed without being set in the filling nozzle mechanism 40. By controlling in this way, the defective packaging bag 6 is automatically removed without relying on the operator, and the automation of such a line is further improved.

[0030]

EFFECT OF THE INVENTION The roll-shaped packaging material of the automatic weighing and packaging apparatus according to the present invention is provided at the joint part in the middle of a long roll-shaped packaging material.
Attach aluminum vapor deposition tape or matte tape different from the material of the roll-shaped packaging material, or make a hole to transmit light,
While clarifying the difference between the joining portion and the roll-shaped packaging material, in the defective packaging material removing device of the automatic weighing and packaging device, the tape stuck to the joining portion or the joining portion in the automatic weighing and packaging device was punched in the joining portion. A detection unit for detecting a hole is provided, and a detection signal of the detection unit is communicated to the control device of the automatic weighing and packaging apparatus,
As the control signal is output from the control device to the automatic weighing and packaging device according to the detection signal of the detection part, it is possible to automatically check and remove the defective packaging material with the joint part without relying on the operator's visual inspection. It has become easy to realize at the device stage.

Further, a control signal from the control device is output to a filling nozzle mechanism for filling the packaging bag with the article to be packaged and a packaging bag supply mechanism for setting the packaging bag directly below the filling nozzle mechanism, Since the filling nozzle mechanism is stopped and the packaging bag supply mechanism discharges the defective packaging bag, the defective packaging material can be removed more reliably.

[Brief description of drawings]

FIG. 1 is a roll-shaped packaging material showing an embodiment of the present invention.

FIG. 2 is a defective packaging bag formed from the roll-shaped packaging material of FIG.

FIG. 3 is an automatic weighing and packaging apparatus that uses a roll-shaped packaging material.

FIG. 4 is an enlarged view of the bag manufacturing device in FIG.

[Explanation of symbols]

 1 roll-shaped packaging material 2 tube 2A original fabric 2B original fabric 3 joint part 4 photo mark 5 aluminum vapor deposition tape 6 defective packaging bag 7 bottom 8 automatic weighing and packaging device 9 supply port 10 weighing device 11 weighing device 12 bag making device 13 bag packing Device 14 Guide roller 15 Feed roller 16 Supply belt 17 Bag making unit 18 Supply belt Drive motor 19 Pulley 20 Pulley 21 Drive belt 22 Drive roller 23 Main body frame 24 Guide roller 25 Guide roller 26 Lower seal stand 27 Fixed cutter blade 28 Lower seal Cylinder 29 Cushion plate 30 Cutter cylinder 31 Moving cutter blade 32 Photoelectric sensor 33 Aluminum proximity switch 34 Sucker cylinder 35 Upper suction cup 36 Lower suction cup 37 Air jetter 38 Air jetter cylinder 39 Discharge hopper 40 Hama nozzle mechanism 41 base plate 42 raised mechanism 43 chucks 44 chuck arm 45 chuck arm cylinder 46 packaging bag supply mechanism 47 seals platform 48 cushion plate

Claims (6)

[Claims] 1. A long roll-shaped packaging material for use in an automatic weighing and packaging device for weighing, packaging, etc., wherein a tape different from the material of the roll-shaped packaging material is attached to the joint portion of the long roll-shaped packaging material. A roll-shaped packaging material characterized by being stuck. 2. A roll-shaped packaging material other than the aluminum-vapor-deposited packaging material according to claim 1, wherein the tape is an aluminum vapor-deposited tape. 3. The roll-shaped packaging material according to claim 1, wherein the tape is a matte tape having a reflection amount lower than that of the roll-shaped packaging material. 4. A long roll-shaped packaging material for use in an automatic weighing and packaging device for weighing, packaging, etc., wherein a hole through which light is transmitted is formed at a joint portion of the long roll-shaped packaging material. Roll-shaped packaging material. 5. A defective packaging material removing device for an automatic weighing and packaging device using the roll packaging material according to claim 1, wherein the roll packaging material is joined to the automatic weighing and packaging device. A detection unit that detects a hole formed in the tape or the bonding portion attached to the section is provided, the detection signal of the detection unit is communicated to the control device of the automatic weighing and packaging apparatus, and by the detection signal of the detection unit, A defective packaging material removing device for an automatic weighing and packaging device, characterized in that a control signal is output from a control device to the automatic weighing and packaging device. 6. The defective packaging material removing device of the automatic weighing and packaging device according to claim 5, wherein a filling nozzle mechanism for filling a packaging bag with a control signal from the control device, and a packaging bag. Outputting to a packaging bag supply mechanism set immediately below the filling nozzle mechanism, stopping the filling nozzle mechanism, and the packaging bag supply mechanism discharging the defective packaging material. Equipment for removing defective packaging materials.