JP2841204B2 - Packaging method and equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a packaging method and apparatus for sequentially packaging various packages such as catalogs and foods using a continuous packaging medium such as a plastic film or paper.

2. Description of the Related Art Conventionally, as described in Japanese Utility Model Publication No. Sho 62-33681, in order to pack a package at the same time as the production of the package, a package supplied in a continuous state is supplied to a continuous packaging medium. A packaging method has been proposed in which packages are sequentially packaged with the packaging medium.

[Problems to be Solved by the Invention] In the case where a film on which characters, pictures, and the like are printed is used as a continuous wrapping medium, a check for such print misalignment is made in a pre-process of the wrapping operation. This check is performed, for example, visually by an operator. If a printing misalignment or the like is found at the check stage, this part is removed and the cut ends of the non-defective parts are joined together. At this time, a seam is formed at the joint.

And in the conventional packaging method, even if the above-mentioned joint reaches a bag-making machine, the packaging work of the package which has not changed from usual was performed. For this reason, a product package in which a package is sealed in a packaging medium having a seam is produced.

Therefore, in a conventional package manufacturing line, a worker visually checks each of the packages, finds a package having a seam, and discards the package. Therefore, in the conventional package manufacturing line, there is a problem that a checker of the package having the seam is required, and the package sealed in the package having the seam is wasted.

In order to solve this inconvenience, it is conceivable to provide a sensor for detecting the seam of the film in the moving path of the film, and to stop the whole package manufacturing line when the sensor detects the seam. In this case, a seamed package is not manufactured, and a checker of the seamed package is not particularly required. However, new inconvenience arises in the measures to be taken after the package production line is stopped. This inconvenience means that it takes a very long time before restarting.In general, the operator first cuts off the detected seam portion from the film using a cutter or the like, and then removes the remaining film portion. Operation such as resetting to the travel route and then restarting is necessary,
Productivity drops significantly.

SUMMARY OF THE INVENTION It is an object of the present invention to efficiently perform a defect check of a packaging medium and reduce waste of a packaged product without reducing productivity of a package production line.

Another object of the present invention is to efficiently discharge empty bags made of defective packaging media.

[Means for Solving the Problems] The present invention according to claim 1 supplies a continuous packaging medium, supplies a package supplied in a continuous state to the continuous packaging medium, and applies the package to the continuous packaging medium. Wrap sequentially in a packaging medium,
In the packaging method for sealing and cutting the package-enclosed end of the packaging medium, when a defective portion in the packaging medium is detected, the supply of the packaging medium and the sealing and cutting operations of the packaging medium are continued. The supply of the package to the defective portion of the packaging medium is stopped based on the detection signal.

According to a second aspect of the present invention, there is provided a packaging device having a continuous packaging medium supply device, a sealing device for sealing and cutting the package-enclosed end of the packaging medium, and a cutting device, and the package being continuously connected to the packaging portion. And a sensor disposed on a moving path of the packaging medium in the continuous packaging medium supply device and configured to detect a defective portion in the packaging medium, and wherein the sensor includes the packaging medium. When the defective part is detected, the supply of the packaging medium and the sealing and cutting operation of the packaging medium are continued, and the packaging by the package supply unit for the defective part of the packaging medium is performed based on the detection signal of the sensor. And a control unit for stopping supply of an object.

The present invention according to claim 3 supplies a continuous packaging medium, supplies a package supplied in a continuous state to the continuous packaging medium, and sequentially packages the package with the packaging medium;
In the packaging method for sealing and cutting the package-enclosed end of the packaging medium, when a defective portion in the packaging medium is detected, the supply of the packaging medium and the sealing and cutting operations of the packaging medium are continued. The supply of the package to the defective portion of the packaging medium is stopped based on the detection signal, and the empty bag produced by the stop of the supply of the package is discharged out of the system.

According to a fourth aspect of the present invention, there is provided a continuous packaging medium supply device, a packaging device having a sealing device and a cutting device for sealing and cutting the package-enclosed end of the packaging medium, and a continuous state of the packaging material on the packaging portion. And a sensor disposed on a moving path of the packaging medium in the continuous packaging medium supply device and configured to detect a defective portion in the packaging medium, and wherein the sensor includes the packaging medium. When the defective part is detected, the supply of the packaging medium and the sealing and cutting operation of the packaging medium are continued, and the packaging by the package supply unit for the defective part of the packaging medium is performed based on the detection signal of the sensor. And a control unit for stopping supply of articles, further disposed downstream of the cutting device, and discharging empty bags produced by stopping supply of the packages to the outside of the system. It is obtained so as to comprise a discharge device.

[Operation] According to the present invention described in claims 1 to 4, the following operation and effects can be obtained.

When a defective portion such as a joint of the packaging medium is detected, the supply of the packaging medium to the defective portion of the packaging medium is stopped while the supply of the packaging medium and the sealing and cutting operations are continued. Therefore, while the supply of the package is stopped, the packaging medium including the defective portion produces an empty bag and does not include the package. That is, it is possible to efficiently check the failure of the packaging medium and eliminate waste of the package.

When a defective portion of the packaging medium is detected, only the supply of the package to the defective portion is stopped, and the supply of the packaging medium and the sealing operation are continued. Therefore, as a countermeasure after the defective portion of the packaging medium is detected,
Since there is no need for a worker to remove a defective portion and reset the packaging medium as in the conventional case, it is possible to prevent a decrease in productivity due to the detection of a failure in the packaging medium.

According to the third and fourth aspects of the present invention, in addition to the above, the following operational effects can be obtained.

Since empty bags produced by stopping the supply of the package are discharged to the outside of the system, empty bags made of defective packaging media can be efficiently discharged.

Embodiment FIG. 1 is a schematic diagram showing a packaging device according to an embodiment of the present invention, FIG. 2 is a schematic diagram showing a defect detection state, FIG. 3 is a schematic diagram showing an example of an empty bag discharging device, FIG. 4 is a schematic diagram showing another example of the empty bag discharging device, and FIG. 5 is a schematic diagram showing a package.

As shown in FIG. 1, a packaging device 10 includes a packaging unit 12 for producing a tubular packaging bag from a packaging medium 11 such as a continuous packaging film coated with an internal heat adhesive, and a packaged material.
And a package supply unit 14 for supplying the package 13. The package 15 is manufactured as shown in FIG.

The packaging unit 12 includes a packaging medium supply device 16, a bag making device 17, a vertical sealing device 18, and a horizontal sealing and cutting device 19.

The wrapping medium supply device 16 of the wrapping unit 12 is configured to wrap the wrapping medium 11 unwound from a roll-shaped wrapping medium unwinding spool 20.
Is continuously supplied by the drawing roller 21. Bag making machine 17
Is used in a known automatic packaging machine, while folding both sides of the packaging medium 11
Is molded into a cylindrical shape. The vertical sealing device 18 is installed on the downstream side of the bag making device 17 and vertically seals opposite side edges of the cylindrically formed packaging medium 11 with a hot roll. The horizontal sealing and cutting device 19 is installed on the exit side of the vertical sealing device 18,
While rotating at the same peripheral speed as the moving speed of 11, the packaging medium 11
At the same time, the sealed end of the package is heated and bonded with a seal fitting, and at the same time, the center of the heated bonded portion is cut with a cutter to separate the front and rear packages.

The package supply unit 14 includes a package supply machine 22 and a package transport conveyor 23. The package supply device 22 sequentially sends the packages 13 to the package transport conveyor 23, and
23 transports the transported article 13 while holding the transported article 13 on a feed claw 24 provided therein. The transport end of the transport conveyor 23 is a bag making device of the packaging section 12.
Connected upstream to 17. Thereby, the package 13 supplied by the package supply unit 14 is supplied from the transport end of the transport conveyor 23 into the cylindrical packaging medium 11 formed by the bag making device 17 of the packaging unit 12. Thereafter, it is sealed inside the packaging medium 11 via the vertical sealing device 18 and the horizontal sealing and cutting device 19 of the packaging unit 12.

Note that, in the packaging device 10, the packaging medium supply device 16 of the packaging unit 12 and the transport conveyor 23 of the package supply unit 14 include a main motor.
Linked at 25.

However, the packaging device 10 is provided on the moving path of the packaging medium 11 in the packaging medium supply device 16 of the packaging section 12 as shown in FIGS.
As shown in the figure, a sensor 30 for detecting a joint as a defective portion in the packaging medium 11 is provided. The sensor 30 detects the seam by detecting a seam tape or the like previously attached to the position corresponding to the seam of the packaging medium 11 in the previous process.

The packaging device 10 has a control device 31. The control device 31 stops the supply of the package 13 by the package supply unit 14 to the joint portion of the packaging medium 11 based on the detection result of the sensor 30. Specifically, the length (L1) of the packaging medium moving path from the sensor 30 to the bag making device 17 is known, and the length of the package moving path (L 1) from the package feeding machine 22 to the bag making device 17 is known.
2) is also known, the control device 31 determines that the package 13 is formed into the bag making machine 17 when the joint portion of the packaging medium 11 detected by the sensor 30 reaches the bag making machine 17. The supply timing of the package supply device 22 is controlled so that the package supply device 22 is not charged. Actually, for example, if there is a seam at the portion "5" in the packaging medium 11 in FIG. 1, "4" to "6" including before and after the seam
The supply operation by the package supply device 22 is stopped for the transport area on the transport conveyor 23 that corresponds to the above.

However, since the packaging device 10 normally operates the packaging unit 12 even when the joint portion of the packaging medium 11 reaches the bag making device 17, in the above-described example, “4” in the packaging medium 11 in FIG. "
The portion "-""6" becomes the empty bag 15A through the bag making device 17, the vertical sealing device 18, and the horizontal sealing and cutting device 19.

The packaging device 10 includes an empty bag discharging device 32 on the downstream side of the horizontal sealing and cutting device 19 of the packaging unit 12. The empty bag discharging device 32 is driven and controlled by the control device 31, and discharges the empty bag 15A out of the system based on the detection result of the sensor 30. Specifically, since the length (L3) of the packaging medium moving path from the sensor 30 to the empty bag discharging device 32 is known, the control device 31 determines that the joint portion of the packaging medium 11 detected by the sensor 30 is an empty bag. When the empty bag discharging device 32 is reached, the empty bag discharging device 32 is controlled to be discharged.

The empty bag discharge device 32 is, for example, an air blow 33 shown in FIG.
At the chute 34 or the motor shown in FIG.
It is discharged to a chute 37 by a rotating arm 36 driven by 35.

 Next, the operation of the above embodiment will be described.

According to the above embodiment, when the joint of the packaging medium 11 is detected, the supply of the package 13 to the joint of the packaging medium 11 is stopped by this detection signal. Therefore, while the supply of the package 13 is stopped, the packaging medium 11 including the joint portion produces the empty bag 15A and does not wrap the package 13.

That is, the defect check of the packaging medium 11 is efficiently performed,
In addition, waste of the package 13 can be eliminated.

Further, according to the above-described embodiment, when the defective portion of the packaging medium 11 is detected, only the supply of the package 13 to the defective portion is stopped, and the other operations such as the supply of the packaging medium 11 and the sealing operation are continued. As a result, it is possible to prevent a decrease in productivity.

Further, according to the above-described embodiment, since the empty bags 15A manufactured by stopping the supply of the package 13 are discharged out of the system, the empty bags 15A made of the defective packaging medium 11 are efficiently discharged. be able to.

In the embodiment of the present invention, the empty bag discharging device 32 is a sensor.
The operation may be based on the empty bag detection result of the empty bag sensor that detects the empty bag 15A, which is independent of the sensor 30, and is not based on the detection result of the sensor 30.

In the embodiment of the present invention, the empty bag discharging operation as performed by the empty bag discharging device 32 in the above embodiment need not be performed.

[Effects of the Invention] As described above, according to the present invention, it is possible to efficiently perform a defect check of a packaging medium and to reduce waste of a package without reducing the productivity of a package manufacturing line.

Further, according to the present invention, empty bags made of defective packaging media can be efficiently discharged.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a packaging device according to an embodiment of the present invention, FIG. 2 is a schematic diagram showing a defect detection state, FIG. 3 is a schematic diagram showing an example of an empty bag discharging device, and FIG. FIG. 5 is a schematic view showing another example of the empty bag discharging device, and FIG. 5 is a schematic view showing a package. 10 ... Packing device, 11 ... Packing medium, 12 ... Packing part, 13 ... Package, 14 ... Packaging supply part, 15 ... Package, 16 ... Packing medium supply device, 17 ... Bag device, 18 …… Vertical sealing device, 19 …… Horizontal sealing and cutting device, 22 …… Package feeding machine, 23 …… Package conveying conveyor, 30 …… Sensor, 31 …… Control device, 32 …… Empty Bag discharge device.

Claims (4)

(57) [Claims] 1. A continuous packaging medium is supplied, and a package supplied in a continuous state is supplied to the continuous packaging medium.
In a packaging method of sequentially packaging the package with the packaging medium and sealing and cutting the package-enclosed end of the packaging medium,
When the defective portion of the packaging medium is detected, the supply of the packaging medium and the sealing and cutting operations of the packaging medium are continued, and the supply of the package to the defective portion of the packaging medium is stopped based on the detection signal. A packaging method, characterized in that the packaging is performed. 2. A packaging device having a continuous packaging medium supply device, a sealing device for sealing and cutting a package-enclosed end of the packaging medium, and a cutting device, and a packaging material for continuously supplying the packaging material to the packaging portion. A packaging device having a supply unit;
A sensor for detecting a defective portion in the packaging medium provided on the moving path of the packaging medium in the continuous packaging medium supply device, and supplying the packaging medium when the sensor detects a defective portion in the packaging medium. And a control unit for stopping the supply of the package by the package supply unit to the defective portion of the packaging medium based on the detection signal of the sensor while the sealing and cutting operations of the packaging medium are continued. A packaging device. 3. A continuous packaging medium is supplied, and a package supplied in a continuous state is supplied to the continuous packaging medium.
In a packaging method of sequentially packaging the package with the packaging medium and sealing and cutting the package-enclosed end of the packaging medium,
When the defective portion of the packaging medium is detected, the supply of the packaging medium and the sealing and cutting operations of the packaging medium are continued, and the supply of the package to the defective portion of the packaging medium is stopped based on the detection signal. And a method of discharging an empty bag produced by stopping the supply of the package to the outside of the system. 4. A packaging device having a continuous packaging medium supply device, a sealing device for sealing and cutting a package-enclosed end of the packaging medium, and a cutting device, and a packaging material for continuously supplying the packaging material to the packaging portion. A packaging device having a supply unit;
A sensor for detecting a defective portion in the packaging medium provided on the moving path of the packaging medium in the continuous packaging medium supply device, and supplying the packaging medium when the sensor detects a defective portion in the packaging medium. And a control unit for stopping the supply of the package by the package supply unit to the defective portion of the packaging medium based on the detection signal of the sensor while the sealing and cutting operations of the packaging medium are continued, further comprising: Disposed downstream of the cutting device,
A packaging device, comprising: a discharge device that discharges an empty bag manufactured by stopping the supply of the package to the outside of the system.