JP7060868B2 - Packaging equipment - Google Patents

Description

The present invention relates to a packaging device capable of manufacturing a package in which a packaged product such as food or a pharmaceutical product and an oxygen scavenger bag are enclosed, and detecting whether or not the oxygen scavenger bag is enclosed in the package.

The packaging device is a pillow packaging machine, a bag making machine, etc. that sequentially fills the packaged material such as food and medicine into the packaging material molded into a tubular shape, seals and cuts it, and manufactures the package. There are filling and packaging machines that open the manufactured bags and fill them with the items to be packaged (contents), deep-drawing packaging machines that mold flat sheets into containers, fill them with the items to be packaged, and then seal them with a lid material. The pillow packaging machine includes a vertical pillow packaging machine that feeds the packaging material in the vertical direction (vertical direction) to fill the packaged product, and a horizontal pillow packaging machine that feeds the packaging material in the horizontal direction (horizontal direction) to fill the packaged product. There are pillow wrapping machines, etc.
In such a packaging device, an oxygen scavenger bag containing an oxygen scavenger for preventing oxidation of the packaged product and extending the storage period is also enclosed in the package.
For example, in a horizontal pillow wrapping machine, a tubular packaging material is supplied on a conveyor, and an oxygen scavenger bag is supplied from the front or the back of the conveyor, and is formed into a tubular shape by a cylinder (former). The packaged product and the oxygen scavenger bag to be conveyed on the conveyor are filled in the package, the center seal is applied, and then the end seal and the cutting are performed to generate a package in which the packaged product and the oxygen scavenger bag are enclosed.
However, the oxygen scavenger bag carried on the conveyor may fall off before being filled in the tubular packaging material, and a package in which the oxygen scavenger bag is not enclosed may be produced.
For this reason, it is necessary to inspect whether the oxygen scavenger bag is enclosed in the package, and visual inspection is also performed, but it is preferable to inspect automatically so as not to reduce the production efficiency, and various deoxidation for that purpose. An oxygen agent inspection device has been proposed.
For example, in Patent Document 1 (Japanese Unexamined Patent Publication No. 2000-35484), a magnetic generating means made of a permanent magnet is attached to the tip of a support of a load cell, and is close to the bottom trajectory of a package carried by a transport conveyor. If the permanent magnet is arranged and a deoxidizing agent containing a ferromagnetic material such as iron powder is inserted in the package carried in the vicinity of the permanent magnet, the permanent magnet attracts the deoxidizing agent. Attached, a deoxidizer detector is disclosed in which the load cell detects its displacement.
Further, in Patent Document 2 (Japanese Unexamined Patent Publication No. 2015-78874), a transport belt on which a packaging bag is placed and transported, and a transport belt which is arranged below the transport belt and swings around a support shaft facing in the horizontal direction. It is equipped with a movable arm, a magnet roller rotatably arranged at the tip of this arm and to which magnetic force is applied, and a rotation detection sensor that detects the rotation of this magnet roller, and oxygen scavenger on a conveyor belt. When the stored packaging bag passes over the magnet roller, the magnet roller is attracted to the oxygen scavenger and abuts on the lower surface of the transport belt to rotate, and the rotation is detected by the rotation detection sensor. The device is disclosed.

However, in an inspection device using a magnet as in Patent Document 1, in order to attract the magnet to the deoxidizing agent (bag), it is necessary to bring the magnet and the package (deoxidizing agent) considerably close to each other (Patent). In the embodiment of Document 1, the gap between the lower surface of the package and the permanent magnet is set to 2 mm (paragraph [0049])). For this reason, when the permanent magnet is placed on the lower surface side of the belt conveyor that conveys the package, the permanent magnet is attracted to the deoxidizing agent enclosed in the package so that the permanent magnet does not come into contact with the belt. It is necessary to use a plurality of belts for a belt conveyor and arrange a permanent magnet between adjacent belts (in the embodiment of Patent Document 1, packaging by two narrow transport belts). The inspection device of Patent Document 1 transports a package having a short width, using a structure for transporting a body and placing both ends of the lower surface of the package on a conveyor belt (paragraph [0049])). There is a problem that it cannot be used for packaging equipment.
Further, Patent Document 1 does not describe at what timing the displacement of the load cell is detected or when the presence or absence of the oxygen scavenger is determined.
Next, in the inspection device of Patent Document 2, a belt guide plate 22 is arranged to face the lower surface of the transport belt 21 that conveys the packaging bag 10, a hole 23 is formed in the belt guide plate 22, and a magnet is formed in the hole 23. A roller 70 is arranged. This is because the magnet roller 70 is arranged fairly close to the lower surface of the transport belt 21 so that the transport belt does not bend downward due to the weight of the package to be transported and come into contact with the magnet roller 70. ..
Therefore, in an inspection device in which a magnet roller is arranged on the lower surface of a conveyor belt as in Patent Document 2, it is necessary to arrange a belt guide plate on the lower surface of the conveyor belt so as to face each other. There is a problem that it cannot be used for a packaging device using a transport conveyor on which a plate is not arranged.
Further, in Patent Document 2, a passage detection sensor 37 for detecting whether the packaging bag 10 passes through the detection area is separately provided below the detection area display top plate 34, and the passage detection sensor 37 detects the passage of the packaging bag 10. At that time, the presence or absence of the oxygen scavenger is determined by whether or not the rotation detection sensor 26 detects the rotation of the magnet roller 70. However, in a packaging device that manufactures packaging bags of various sizes and shapes, , There is a problem that the packaging bag (for example, a flat packaging bag) through which the passage detection sensor 37 passes cannot be detected, and the presence or absence of the oxygen scavenger may not be determined.

In this regard, Patent Document 3 (Republished 2003/0276559) describes a transport path for transporting the detected object in order to detect a metallic foreign substance mixed in the detected object in the package. A metal for detecting metal foreign matter mixed in the object to be detected by generating a magnetic field by a transport means having a transport means and a detection unit provided in the middle of the transport path and having a coil having a structure in which a lead wire is wound around a core. A metal foreign matter detecting device including a foreign matter detecting means is disclosed, and a package transported on a transport conveyor using such a metal foreign matter detecting device contains a ferromagnetic material such as iron powder. It is also possible to detect whether an oxygen scavenger bag containing an oxygen scavenger is enclosed.
However, in the metal foreign matter detection device of Patent Document 3, since the oxygen scavenger bag is detected as a metallic foreign matter, it cannot be determined whether the oxygen scavenger bag is detected or the metal foreign matter is detected, and the metal foreign matter is detected. A package that is enclosed and does not contain an oxygen scavenger bag is detected as a package in which an oxygen scavenger bag is enclosed, and there is a problem that the presence or absence of the oxygen scavenger bag cannot be accurately determined.
Further, also in the metal foreign matter detection device of Patent Document 3, similarly to the inspection device of Patent Document 2, at the timing when the object to be detected (package) is detected by the optical sensor 7 installed in front of the first sensor coil 10. Since the output signal of each sensor coil is analyzed to detect whether the object to be detected contains a metallic foreign substance, the package (for example, a flat package) through which the optical sensor 7 passes cannot be detected, and the metal There arises a problem that it may not be possible to determine the presence or absence of a deoxidizer as a foreign substance.
Further, in the metal foreign matter detecting device of Patent Document 3, the first sensor coil 10 and the second sensor are sandwiched between the upstream side and the downstream side of the conveyor belt (belt 9) over the entire width thereof. Since the sensor storage unit 4 in which the coil is arranged is provided, a large space is required around the conveyor to attach the metal foreign matter detection device of Patent Document 3, and the packaging has only a small space around the conveyor. There is a problem that the metal foreign matter detecting device of Patent Document 3 cannot be attached to the device.

Japanese Unexamined Patent Publication No. 2000-35484 Japanese Unexamined Patent Publication No. 2015-78874 Republished 2003/027659

The problem to be solved by the present invention is a packaging device for producing a package filled with an oxygen scavenger-encapsulated bag containing an oxygen scavenger and an oxygen scavenger, and transporting the package by a transport device such as a belt conveyor. In The detection unit that detects the presence of the oxygen scavenger-encapsulated bag should be fixed and installed close to the position where the oxygen scavenger-encapsulated bag of the transport device is transported, without arranging the belt guide plate facing each other on the lower surface. Is there an oxygen scavenger-filled bag in the package even if there is no large space around the package without a separate sensor to detect the passage of the package transported by the transport device? It is to be able to detect whether or not it is.

According to the first aspect of the present invention, an oxygen scavenger-encapsulated bag containing an oxygen scavenger containing iron powder and a package filled with an object to be packaged are generated at regular intervals, and the package is placed on a conveyor belt. A packaging device provided with a transport device for transporting the package, which is fixedly arranged close to a position where the package mounted on the conveyor belt of the transport device is transported, and the packaging does not come into contact with the conveyor belt. Whether or not the proximity sensor outputs a detection signal by detecting the presence of the oxygen scavenger-encapsulated bag in the body and the proximity sensor outputs the detection signal at the detection timing set based on the fixed cycle. The present invention is to solve the above-mentioned problem by providing a packaging device provided with a discrimination device that discriminates whether or not the case is to be discriminated and outputs the discrimination result.

According to the second aspect of the present invention, the packaging device includes a control device for controlling the operation of the drive device of the packaging device, and the control device generates a cycle signal for generating the package in the fixed cycle. However, the detection timing provides a packaging device set based on the cycle signal to solve the above-mentioned problems.

According to the third aspect of the present invention, the packaging device is a horizontal pillow packaging machine, the transport device is a discharge conveyor of the horizontal pillow packaging machine, and the proximity sensor moves the package of the conveyor belt of the discharge conveyor. Attached to the underside of the portion, said detection timing solves the above problem by providing a packaging device at a timing set such that the package is conveyed by the discharge conveyor and passes in the vicinity of the proximity sensor. It is something to do.

In the packaging device of the invention according to claim 1, a plurality of belts are used for a transport device such as a belt conveyor to leave a space between adjacent belts, or a belt guide plate is arranged to face each other on the lower surface of the belt. A proximity sensor that detects the presence of the oxygen scavenger-encapsulated bag can be fixedly installed close to the position where the oxygen scavenger-encapsulated bag of the conveyor is transported, and is transported by the conveyor. Even if there is no large space around the conveyor, it is possible to detect whether or not there is an oxygen scavenger-filled bag in the package without separately providing a sensor to detect the passage of the package. ..

The packaging device of the invention according to claim 2 has the same effect as that of the invention of claim 1.

In the packaging device of the invention according to claim 3, a plurality of conveyor belts are used for the discharge conveyor to leave a space between adjacent conveyor belts, or a belt guide plate is arranged to face each other on the lower surface of the conveyor belt. A proximity sensor that detects the presence of the oxygen scavenger encapsulation bag can be fixedly installed near the position where the oxygen scavenger encapsulant is conveyed on the conveyor belt, and the packaging is conveyed by the discharge conveyor. Even if there is no large space around the discharge conveyor, it is possible to detect whether or not the package contains an oxygen scavenger without separately providing a sensor for detecting the passage of the body.

It is a front view and a plan view of a horizontal pillow wrapping machine. It is a perspective view of the package manufactured by the horizontal pillow packaging machine. FIG. 2 is a cross-sectional view taken along the line AA of FIG. To. It is a perspective view of the oxygen scavenger-filled bag and the BB sectional view thereof. Is. It is a perspective view which showed the schematic structure of the end seal / cutting unit 40. It is a left side view of the end seal / cutting unit 40. It is a front view of the opening / closing toggle mechanism rotating part. It is a block diagram which shows the control part of the horizontal pillow packaging machine 1. It is a timing chart showing the operation timing and the like of each drive device of the horizontal pillow packaging machine 1. Of the timing charts of FIG. 9, it is a timing chart showing the operation timing and the like of each drive device and the like in one cycle. It is a front view showing the state of the intermediate conveyor 37, the end seal / cutting unit 40, the tubular continuous film TFi in the discharge conveyor 51, the package 2, the packaged object 4, and the oxygen scavenger-filled bag 5 at a specific time. ..

[Packaging equipment configuration]
The configuration of the packaging device when the packaging device of the present invention is a horizontal pillow packaging machine will be described.
1A and 1B are views showing a schematic configuration of a horizontal pillow packaging machine, where FIG. 1A is a front view and FIG. 1B is a plan view.
In the figure, 1 is a horizontal pillow packaging machine, 2 is a packaging body, 3 is a tubular film, 4 is an object to be packaged, 5 is a deoxidizer-encapsulated bag, 6 is a proximity sensor, and 10 is a packaging material (packaging material) supply.・ Feed unit, 11 is a guide roller, 12 is a presser roller, 13 is a feed roller, 14 is a servomotor for a feed roller, 15 is a guide roller, 20 is a packaged material supply / filling unit, 21 is a supply conveyor, and 21a is a conveyor. Belt, 21b is a positioning attachment, 21c is a drive roller, 22 is a drive roller servomotor, 23 is a cylinder (former), 30 is a film pulling / center seal / packing unit, 31a and 31b are paper pulling rollers, 32. Is a servomotor for film pulling rollers, 33a and 33b are center seal blocks, 34 is an opening / closing device, 35a and 35b are packing rollers, 36 is a servomotor for packing rollers, 37 is an intermediate conveyor, 37a is a conveyor belt, and 37b is a drive roller. , 38 is a servomotor for drive rollers, 40 is an end seal / cutting unit, 41 and 42 are end seal blocks, 50 is a package discharge unit, 51 is a discharge conveyor, 51a is a conveyor belt, 51b is a drive roller, and 52 is a drive. The roller servomotor, MR is a winding packaging material, Fi is a continuous film, and TFi is a tubular continuous film.

As shown in FIG. 1, the horizontal pillow packaging machine 1 includes a packaging material (packaging material) supply / feed unit 10, a packaged product supply / filling unit 20, a film pulling / center seal / sealing unit 30, and an end seal / cutting unit. It is composed of 40, a package discharge unit 50, and the like.
The packaging material (packaging material) supply / feed unit 10 includes a take-up packaging material supply device (not shown), a presser roller 12, a feed roller 13, a feed roller servomotor 14 for rotating the feed roller 13, and a guide roller 11. It is composed of 15 mag.
The packaged product supply / filling unit 20 is composed of a deoxidizer-encapsulated bag supply device (not shown), a packaged product supply device (not shown), a supply conveyor 21, a cylinder making device (former) 23, and the like. The supply conveyor 21 is composed of a conveyor belt 21a to which a positioning attachment 21b is attached at regular intervals, a drive roller 21c, a drive roller servomotor 22 for rotating the drive roller 21c, and the like.
The film pulling / center seal / filling unit 30 includes paper pulling rollers 31a and 31b, a paper pulling roller servomotor 32, a center seal block 33a and 33b, an opening / closing device 34, a filling roller 35a and 35b, and a filling roller servomotor 36. The intermediate conveyor 37 is composed of an intermediate conveyor 37 and the like, and the intermediate conveyor 37 is composed of a conveyor belt 37a, a drive roller 37b, a drive roller servomotor 38 for rotating the drive roller 37b, a plurality of rollers for guiding the conveyor belt 37a, and the like.
The end seal / cutting unit 40 includes end seal blocks 41 and 42, a mechanism for opening and closing the blocks, a cutting device, and the like (details will be described later).
The package discharge unit 50 includes a conveyor belt 51a, a drive roller 51b, a servomotor 52 for a drive roller that rotates the drive roller 51b, a discharge conveyor 51 composed of a plurality of rollers for guiding the conveyor belt 37a, and the like. ..
The packaging device of the present invention is not limited to the above-mentioned horizontal pillow packaging machine 1, and is a vertical pillow packaging machine, a filling packaging machine, a deep drawing packaging machine, etc. that seals an oxygen scavenger-encapsulated bag together with an object to be packaged. It may be.

[Package, oxygen scavenger encapsulation bag, proximity sensor]
Here, the package 2, the oxygen scavenger-encapsulated bag 5, and the proximity sensor 6 will be described.
2 is a perspective view of the package 2 manufactured by the horizontal pillow packaging machine 1, FIG. 3 is a sectional view taken along the line AA of FIG. 2, and FIG. 4A is a perspective view of the oxygen scavenger-encapsulated bag 5. FIG. 4 (b) is a cross-sectional view taken along the line BB of FIG. 4 (a), in which 3a and 3b are end seal portions, 3c is a center seal portion, 5a is a bag, and 5b is an oxygen scavenger.
As shown in FIGS. The packaged product 4 and the oxygen scavenger-encapsulated bag 5 are sealed so that the bag 5 is located.
As shown in FIG. 4, the oxygen scavenger-encapsulated bag 5 is a bag 5 made of a film or the like, and deoxidized with iron powder (active iron oxide powder such as ferrous oxide and ferric oxide) as a main component. The agent 5b is encapsulated.
The proximity sensor 6 is provided with a detection coil, a transmission circuit (neither shown), or the like, and is attached to the lower side of the portion where the package 2 of the conveyor belt 51a of the discharge conveyor 51 moves, and is removed from the package 2. Detects whether or not the oxygen agent-filled bag 5 is present.
That is, in the proximity sensor 6, the oxygen scavenger encapsulation bag 5 approaches the AC magnetic field generated from the detection coil by the transmission circuit, and the induced current (eddy current) generated in the iron powder (oxygen scavenger 5) in the bag 5 is used. By detecting the magnetic loss (change in impedance), the presence or absence of the oxygen scavenger-filled bag 5 is detected.
The mounting position of the proximity sensor 6 is not limited to the above, and the portion in which the oxygen scavenger-encapsulated bag 5 is conveyed under the packaged item 4, for example, the conveyor belt 37a of the intermediate conveyor 37. The packaged product 4 and the oxygen scavenger-encapsulated bag 5 may be on the lower side of the moving portion, and when the oxygen scavenger-encapsulated bag 5 is placed on the upper side of the packaged product 4, the conveyor belt 51a of the discharge conveyor 51 It may be above the portion where the package 2 moves, or above the portion where the packaged item 4 and the oxygen scavenger encapsulation bag 5 of the conveyor belt 37a of the intermediate conveyor 37 move.

[Operation of packaging device (horizontal pillow packaging machine 1)]
The operation of the packaging device (horizontal pillow packaging machine 1) will be described.
In the packaging material (packaging material) supply / feed unit 10, the continuous film Fi is unwound from the winding packaging material M2 attached to the winding material supply device or the like, and the continuous film Fi is guided by the guide roller 11. It is sandwiched between the presser roller 12 and the feed roller 13, and the feed roller 13 is rotated by the feed roller servomotor 14, whereby the continuous film Fi is fed out by a certain length, and the cylinder (former) is made via the guide roller 15. ) You will be guided to 23.
In the packaged product supply / filling unit 20, the packaged product 4 and the oxygen scavenger-filled bag 5 placed so as to sneak under the packaged product 4 are placed on the supply conveyor 21 and carried to the cylinder making device (former) 23.
That is, in the supply conveyor 21, the oxygen scavenger-encapsulated bag 5 supplied from the oxygen scavenger-encapsulated bag supply device is placed on the conveyor belt 21a, and the packaged product 4 supplied from the packaged product supply device is desorbed. It is placed so as to overlap the agent-filled bag 5, and the drive roller 21c is rotated by the drive roller servomotor 22 to move the conveyor belt 21a, whereby the packaged product 4 and the oxygen scavenger-encapsulated bag 5 are made into a cylinder. It will be carried to 23.
On the other hand, the continuous film Fi guided to the cylinder making device 23 is formed into a cylindrical shape by the cylinder making device 23 to become a tubular continuous film TFi.
Then, the packaged product 4 carried to the cylinder making device 23 and the oxygen scavenger-filled bag 5 are filled in the tubular continuous film TFi.
In the film pulling / center seal / sealing unit 30, first, the overlapped ends of the tubular continuous film TFi are sandwiched between the paper pulling rollers 31a and 31b, and the film pulling roller 31a is generated by the paper pulling roller servomotor 32. After rotating, the tubular continuous film TFi is sent out by a certain length and guided to the center seal blocks 33a and 33b.
Next, the center seal blocks 33a and 33b are opened and closed by the opening / closing device 34, and the overlapped ends of the tubular continuous film TFi are sandwiched between the center seal blocks 33a and 33b, and the center seal is formed on the tubular continuous film TFi. It is applied and a center seal portion is formed.
After that, the center seal portion of the tubular continuous film TFi is sandwiched between the filling rollers 35a and 35b, the filling roller 35a is rotated by the servomotor 36 for the filling roller, and the center seal portion of the tubular continuous film TFi is marked. Will be done.
The tubular continuous film TFi having the center seal portion marked in this way is placed on the conveyor belt 37a of the intermediate conveyor 37, and the drive roller 37b is rotated by the drive roller servomotor 38 to move the conveyor belt 37a. Then, the tubular continuous film TFi is carried to the end seal / cutting unit 40.
In the end seal / cutting unit 40, the tubular continuous film TFi provided with the center seal portion is sandwiched between the end seal blocks 41 and 42, and the end seal and cutting are performed to generate the package 2, which is generated. The package 2 is sent to the package discharge unit 50 (details will be described later).
In the package discharge unit 50, the package 2 is placed on the conveyor belt 51a of the discharge conveyor 51, the drive roller 51b is rotated by the drive roller servomotor 52, the conveyor belt 51a is moved, and the package 2 is discharged. Ru.
In the present embodiment, the horizontal pillow wrapping machine 1 is an intermittent transport type that intermittently conveys a continuous film Fi, a tubular continuous film TFi, etc., but continuously conveys a continuous film Fi, etc. It may be a transport type, and in the continuous transport type horizontal pillow wrapping machine 1, the feed roller 13, the drive roller 21c, the film pulling roller 31a, the graining roller 35a, the drive roller 37b, the drive roller 51b, etc. rotate continuously. , Continuous film Fi, tubular continuous film TFi, packaged product 4, and oxygen scavenger-encapsulated bag 5 are continuously conveyed at a constant speed.

[Structure of end seal / cutting unit 40]
The outline of the overall configuration of the end seal / cutting unit 40 of the horizontal pillow packaging machine 1 will be described.
5 is a perspective view showing a schematic configuration of the end seal / cutting unit 40, FIG. 6 is a left side view of the end seal / cutting unit 40, and FIG. 7 is a front view of the opening / closing toggle mechanism rotating portion.
In the figure, 41 and 42 are heater blocks, 41a and 42a are central grooves, 41b and 42b are heater block holders, 41c are guide holes, 43 is an opening / closing toggle mechanism, 43a is a rotating shaft, 43b is a rotating plate, and 43c and 43d are. The driven arm, 43e and 43f are holding members, 44 is a servomotor for opening and closing the heater block, 44a is a speed reducer, 45 is a holder drive block, 46a and 46b are support blocks, 46c and 46d are connecting plates, and 47a and 47b are connecting rods. , 48 is a cutting device, 48a is a support plate, 48b is an air cylinder, 48c is a piston rod, 48d is a slider, 48e and 48f are guide rods, and 49 is a cutting knife.
In the end seal / cutting unit 40, central grooves 41a and 42a are provided in the heater blocks 41 and 42 in which heaters (not shown) are embedded, and the heater block 41 is attached to the lower surface side of the heater block holder 41b. The heater block holder 41b is provided with a guide hole 41c, the heater block 42 is attached to the upper surface side of the heater block holder 42b, and the holding member 43e is attached to the lower surface side of the heater block holder 42b.
The heater block holder 41b is connected to the holder drive block 45 by the connecting rods 47a and 47b, and the heater block holder 42b is connected to the holder drive block 45 via the opening / closing toggle mechanism 43 and slides to the connecting rods 47a and 47b. It is movably supported, the connecting rods 47a and 47b are slidably supported by the support blocks 46a and 46b, and the support blocks 46a and 46b are connected by the connecting plates 46c and 46d and are connected to the upper surface side of the holder drive block 45. Is attached with a holding member 43f.
In the opening / closing toggle mechanism 43, the rotating plate 43b is attached to the rotating shaft 43a, one ends of the driven arms 43c and 43d are rotatably attached to both ends of the rotating arm 43b, and the other ends of the driven arm 43c are attached to the holding member 43e. It is rotatably attached, the other end of the driven arm 43d is rotatably attached to the holding member 43f, and the rotating shaft 43a is connected to the heater block opening / closing servomotor 44 via the speed reducer 44a.
The cutting device 48 is slidably supported by a support plate 48a, an air cylinder 48b attached to the upper surface side of the support plate 48a, and guide rods 48e, 48f, and guide rods 48e, 48f attached to the lower surface side of the support plate 48a. It is composed of a slider 48d, a cutting knife 49 attached to the slider 48d, and the like.
The tip of the piston rod 48c of the air cylinder 48b is attached to the slider 48d, and the tips of the guide rods 48e and 48f are attached to the inner surface of the guide hole 41c of the heater block holder 41b.

[Operation of end seal / cutting unit 40]
In the end seal / cutting unit 40, when the rotary shaft 43a of the opening / closing toggle mechanism 43 is rotated by the servomotor 44a for opening / closing the heater block to rotate the rotary plate 43b, the heater block holder 42b is connected to the connecting rod 47a via the driven arm 43c. , 47b. At the same time, the holder drive block 44 moves via the driven arm 43d, the connecting rods 47a and 47b move along the support blocks 46a and 46b, and the heater block holder 41b moves in the opposite direction to the heater block holder 42b. ..
As a result, the heater block 41 and the heater block 42 are opened and closed (detachment operation).
Further, in the cutting device 48, by operating the air cylinder 48b, the slider 48d moves inside the guide hole 41c of the heater block holder 41b along the guide rods 48e and 48f via the piston rod 48c, and the slider The cutting knife 49 attached to 48d moves.
Then, when the heater block 41 and the heater block 42 are closed, the tubular continuous film TFi on which the center seal portion 3c is formed is end-sealed to form the end-seal portions 3a and 3b. The air cylinder 48b of the cutting device 48 operates, and the cutting knife 49 protrudes from the central groove 41a of the heater block 41 and enters the central groove 42b of the heater block 42, and the boundary portion between the end seal portion 3a and the end seal portion 3b. Is cut to produce a package 2.
The end seal / cutting unit 40 has described the case where the horizontal pillow packaging machine 1 is an intermittent transport type, but when the horizontal pillow packaging machine 1 is a continuous transport type, the end seal / cutting unit 40 is supported. By reciprocating the blocks 46a and 46b in the transport direction of the tubular continuous film TFi or the like, a moving mechanism for reciprocating the entire end seal / cutting unit 40 in the same direction is provided, and the heater block 41 and the heater block 42 are closed. While the end seal is applied to the tubular continuous film TFi, the end seal / cutting unit 40 moves together with the tubular continuous film TFi, and while the heater block 41 and the heater block 42 are open, the end seal / cutting unit. The 40 moves in the direction opposite to that of the tubular continuous film TFi and returns to the original position.

[Control of packaging device (horizontal pillow packaging machine 1)]
Next, control when the packaging device (horizontal pillow packaging machine 1) is an intermittent transfer type will be described.
FIG. 8 is a block diagram showing a control portion of the horizontal pillow packaging machine 1. In the figure, 60 is a control device, 61 is an operation panel, 62 is a discrimination device, and 63 is an alarm device.
The control device 60 includes each drive device of the horizontal pillow packaging machine 1 (feed roller servomotor 14, film pull roller servomotor 32, eye-catching roller servomotor 36, drive roller servomotors 22, 38, 52, heater block). The operation circuits of the opening / closing servomotor 44, opening / closing device 34, cutting device 48, etc.) are connected by cables or the like to control the operation of these drive devices, and also communicate with the operation panel 61 and the discrimination device 62 by cables or the like. It is connected and sends and receives data to and from these.
That is, the control device 60 includes a cycle signal generator (not shown) and generates a cycle signal (a signal representing a manufacturing cycle of the package 2 (a cycle for manufacturing one package 2)) at a fixed cycle. Then, the operation of each drive device is controlled based on the operation timing set with reference to this cycle signal.
The operation panel 61 includes a computer incorporating a dedicated operation program corresponding to the horizontal pillow packaging machine 1, an input display unit having a touch panel type display screen, a transmission / reception unit (none of which is shown), and the like, and is a control device 60. The operation timing for the control device 60 to control each drive device, and the detection timing for the discrimination device 62 to determine the presence / absence of the detection signal from the proximity sensor 6 by communicating with the discrimination device 62 and transmitting / receiving data to / from these. Etc. are set.
The discrimination device 62 determines whether or not the oxygen scavenger-filled bag 5 is present in the package 2 based on the detection signal from the proximity sensor 6 to which the proximity sensor 6 and the alarm device 63 are connected. The determination result (data) is output and transmitted to the alarm device 63.
The alarm device 63 includes an alarm sound generating unit such as a buzzer or an alarm display unit such as an alarm lamp (neither is shown), and emits an alarm sound based on the discrimination result (data) sent from the discrimination device 62. Or display an alarm.
In the present embodiment, the control device 60 and the discrimination device 62 are separate devices, but the discrimination device 62 may be incorporated in the control device 60.
Further, although the discrimination device 62 transmits the discrimination result to the alarm device 63, the discrimination device 63 is not provided, the discrimination result from the discrimination device 62 is transmitted to the control device 60, and the oxygen scavenger is contained in the package 2. When the encapsulation bag 5 does not exist, the operation of each drive device of the horizontal pillow packaging machine 1 may be stopped.

FIG. 9 is a timing chart showing the operation timing and the like of each drive device of the horizontal pillow packaging machine 1, and FIG. 10 is a timing showing the operation timing and the like of each drive device and the like in one cycle of the timing chart of FIG. It is a chart.
In the figure, t (t1 to t4, τ1 to τ8) is the elapsed time from the start time, a1 to a3, b1 to b3, c11 to c32, d1 to d3, and e1 to e3 are time zones, and the times τ5 to t2. Time zone a1 and b1, time zone c11 between time t1 and τ1, time zone c12 between time τ4 and τ6, time zone d1 between time τ2 and τ3, and time zone d1 and time τ7 to τ8. The time zone e1 is set up to.
TC represents a cycle signal and is generated from the cycle signal generator of the control device 60 at a constant cycle.
The cycle signal TC generation cycle is set by the input display unit of the operation panel 61, and is set to a set cycle, for example, when 60 packages 2 are manufactured per minute, at 1-second intervals. Generates cycle signal TC.
In FIG. 9, the cycle signals TC1, TC2, TC3, and TC4 are generated at the times t1, t2, t3, and t4, and the intervals between the times t1, t2, t3, and t4 are the same.
T14 represents the operation timing of the feed roller servomotor 14, and the feed roller servomotor 14 operates in the time zone a1 (between time τ5 and t2), a2, and a3 of each cycle. The continuous film Fi is fed by a certain length.
Similarly, the servomotor 32 for the film pulling roller and the servomotor 36 for the eye-catching roller operate in the time zones a1, a2, and a3, and feed the tubular continuous film TFi by a certain length.
T22 represents the operation timing of the drive roller servomotor 22, and the drive roller servomotor 22 operates in the time zone b1 (between time τ5 and t2), b2, and b3 of each cycle, and is a packaged product. 4 and the oxygen scavenger-filled bag 5 are transported by a certain distance.
Similarly, the drive roller servomotors 38 and 52 also operate in the time zones b1, b2, and b3, and convey the cylindrical continuous film TFi and the package 2 by a certain distance.
T44 represents the operation timing of the heater block opening / closing servomotor 44, and the heater block opening / closing servomotor 44 first operates in the time zone c11 (between time t1 and τ1), c21, and c31 of each cycle. The heater block 41 and the heater block 42 are closed, end seals are applied to form end seal portions 3a and 3b, and then the operation is performed in the time zone c12 (between times τ4 and τ6), c22, and c32 of each cycle. , The heater block 41 and the heater block 42 open.
Similarly, the opening / closing device 34 operates in the time zones c12, c22, and c32, the center seal block 33a and the center seal block 33b are closed, the center seal is applied to form the center seal portion 3c, and the time zones c12 and c22 are formed. , C32 operates to open the center seal block 33a and the center seal block 33b.
T48 represents the operation timing of the cutting device 48, and the cutting device 48 (air cylinder 48b) operates in the time zone d1 (between times τ2 and τ3), d2, and d3 of each cycle, and the cutting knife. 49 cuts the end seal portion (the boundary between the end seal portion 3a and the end seal portion 3b) of the tubular continuous film TFi.
T6 represents the detection timing of the proximity sensor 6, but this detection timing is different from the operation timing of T14 and the like, and is the timing at which the discrimination device 62 determines the presence / absence of the detection signal from the proximity sensor 6. The device 62 determines whether or not the proximity sensor 6 has sent a detection signal to these time zones e1, e2, and e3 with the time zones e1 (between times τ7 and τ8), e2, and e3 of each cycle as detection timings.
The time zones e1, e2, and e3 that are the detection timings are time zones set in which the package 2 is conveyed by the discharge conveyor 51 and passes in the vicinity of the proximity sensor 6, and is a constant cycle in which the cycle signal TC is generated. In the horizontal pillow packaging machine 1 that generates and discharges one package 2 in the above, the time zone in which the package 2 passes in the vicinity of the proximity sensor 6 based on the cycle signal TC, that is, the detection timing is set. be able to.

FIG. 11 shows the state of the intermediate conveyor 37, the end seal / cutting unit 40, the tubular continuous film TFi in the discharge conveyor 51, the package 2, the packaged product 4, and the oxygen scavenger-filled bag 5 at a specific time. It is a front view.
Hereinafter, the operation of each drive device in one cycle from time t1 to t2 and the state of the tubular continuous film TFi, the package 2, the packaged product 4, the oxygen scavenger-filled bag 5, and the like will be described.
First, in the time zone c11, the servomotor 44 or the like for opening and closing the heater block starts the operation at the time t1 and ends the operation at the time τ1, the heater block 41 and the heater block 42 or the like are closed, and the end seal or the like is applied to the end. Seal portions 3a, 3b and the like are formed.
Next, in the time zone d1, the cutting device 48 (air cylinder 48b) starts the operation at the time τ2 and ends the operation at the time τ3, and the cutting knife 49 is the end seal portion (end seal) of the tubular continuous film TFi. The boundary between the portion 3a and the end seal portion 3b) is cut.
FIG. 11A shows a state in which the heater block 41 and the heater block 42 are closed (a state between the times τ1 and τ4), and the left side of the heater blocks 41 and 42 is on the conveyor belt 37a of the intermediate conveyor 37. A tubular continuous film TFi filled with an object to be packaged 4 and a bag 5 containing an oxygen scavenger is placed on the conveyor belt of the discharge conveyor 51 on the right side of the heater blocks 41 and 42. It is on 51a.
Next, in the time zone c12, the heater block opening / closing servomotor 44 and the like start the operation at the time τ4 and end the operation at the time τ6, and the heater block 41 and the heater block 42 and the like open.
Further, in the time zone c12, the feed roller servomotor 14 and the like start to operate at time τ5, the continuous film Fi and the like start to feed by a certain length, and at the same time, the drive roller servomotor 22 and the like start to operate and are covered. The package 4 and the oxygen scavenger-filled bag 5 and the like are started to be transported by a certain distance.
FIG. 11B shows a state in which the heater block 41 and the heater block 42 are open (a state between the times τ4 and τ6), and the conveyor belt of the intermediate conveyor 37 is on the left side of the heater blocks 41 and 42. A tubular continuous film TFi in which the packaged product 4 and the oxygen scavenger-encapsulated bag 5 are filled on 37a and the end seal portion 3b is formed on the right end is placed, and the end is on the right side of the heater blocks 41 and 42. The package 2 on which the seal portions 3a and 3b are formed is mounted on the conveyor belt 51a of the discharge conveyor 51.

After that, the feed roller servomotor 14, the drive roller servomotor 22, and the like continue to operate, and continue to feed the continuous film Fi, the tubular continuous film TFi, the package 2, and the like.
In this way, the discharge conveyor is in the time zone e1 (between times τ7 and τ8) between the time zones a1 and b1 (between times τ5 and t2) when the tubular continuous film TFi, the package 2 and the like are being sent. The package 2 carried on the conveyor belt 51a of 51 passes over the proximity sensor 6.
FIG. 11C shows a state in which the package 2 on the conveyor belt 51a of the discharge conveyor 51 is directly above the proximity sensor 6, and the packaged product 4 and the oxygen scavenger-filled bag 5 are filled with the end seal portion. The tubular continuous film TFi on which 3b is formed is placed across the conveyor belt 37a of the intermediate conveyor 37 and the conveyor belt 51a of the discharge conveyor 51.
At this time, when the oxygen scavenger-encapsulated bag 5 is under the packaged item 4 in the package 2, the proximity sensor 6 detects the oxygen scavenger-encapsulated bag 5 and sends a detection signal to the discriminating device 62 for packaging. When there is no oxygen scavenger-encapsulated bag 5 under the packaged item 4 in the body 2, the oxygen scavenger-encapsulated bag 5 is not detected and the detection signal is not sent to the discriminating device 62.
When the detection signal is sent from the proximity sensor 6 in the time zone e1 (between times τ7 and τ8), the discriminator 62 encapsulates the oxygen scavenger-encapsulated bag 5 in the package 2. The result is sent to the alarm device 63, and the alarm device 63 does not issue an alarm.
On the other hand, in the discrimination device 62, when the detection signal is not sent from the proximity sensor 6 in the time zone e1 (between the time τ7 and τ8), the oxygen scavenger encapsulation bag 5 is not enclosed in the package 2. The result is sent to the alarm device 63, and the alarm device 63 issues an alarm such as a buzzer sound.
Finally, at time t2, the operation of the feed roller servomotor 14, the drive roller servomotor 22, and the like is completed, the tubular continuous film TFi and the like are fed by a certain length, and the package 2 generated from the discharge conveyor 51. Is discharged, and the operation of one cycle (cycle) ends.
In FIG. 11D, the operation of one cycle is completed, the package 2 is discharged from the discharge conveyor 51, the packaged product 4 and the oxygen scavenger filling bag 5 are filled, and the end seal portion 3b is formed. The tubular continuous film TFi is shown to straddle the intermediate conveyor 37 and the discharge conveyor 51, and the packaged product 4 and the oxygen scavenger-filled bag 5 are located on the left and right sides of the heater blocks 41 and 42. There is.
After that, each drive device starts the operation of the next cycle (cycle) at time t2, repeats the above-mentioned operation, and one package 2 is generated for each cycle.
When the horizontal pillow packaging machine 1 is an intermittent transfer type, the feed roller 13, the drive roller 21c, the film pulling roller 31a, the basis weight roller 35a, the drive roller 37b, the drive roller 51b, and the like rotate continuously, so that FIG. The operating times of T14 and T22 in FIG. 10 are not intermittent as in a1 to a3 and b1 to b3, but are continuous in operation for the entire time.

As described above, in the horizontal pillow packaging machine 1, the proximity sensor 6 is attached to the lower side of the portion where the package 2 of the conveyor belt 51a of the discharge conveyor 51 moves, and the horizontal pillow packaging machine 1 is used every cycle. Each drive device performs the same operation at the same timing, one package 2 in which the packaged product 4 and the oxygen scavenger-encapsulated bag 5 are enclosed is generated and conveyed at a fixed timing, and the discrimination device 62 is preset. The presence or absence of the oxygen scavenger-encapsulated bag 5 is determined based on whether or not the detection signal is sent from the proximity sensor 6 at the detected detection timing, and the determination result is output and sent to the alarm device 63.
Therefore, it is not necessary to use a plurality of belts for a conveyor belt or the like to leave a space between adjacent belts or to arrange the belt guide plates on the lower surface of the belts so as to face each other. Even when there is no space, the proximity sensor 6 that detects the presence of the oxygen scavenger-filled bag can be fixedly installed near the position where the oxygen scavenger-filled bag of the conveyor is transported, and can be transported. Whether the oxygen scavenger-filled bag 5 is enclosed in the package 2 by the discrimination device 62 by setting the detection timing of the discrimination device 62 without separately providing a sensor for detecting the passage of the package 2 conveyed by the device. It can be determined whether or not.

In the packaging device of the present invention, a plurality of belts are used for a conveyor such as a belt conveyor to convey the products without leaving a space between adjacent belts or arranging the belt guide plates on the lower surface of the belts so as to face each other. A sensor that can fix and install a detection unit that detects the presence of the deoxidizing agent encapsulation bag near the position where the deoxidizing agent of the device is transported, and detects the passage of the package transported by the transport device. Even if there is no large space around the conveyor, it is possible to detect whether or not there is a deoxidizer-encapsulated bag in the package, and it is possible to detect whether or not there is a deoxidizer-encapsulated bag in the package. It can be used for machines, filling and packaging machines, deep-drawing packaging machines, etc.

1 Horizontal pillow packaging machine 2 Packaging body 3 Cylindrical film 3a, 3b End seal part 3c Center seal part 4 Packaged product 5 Oxygen scavenger encapsulation bag 5a Bag 5b Oxygen scavenger 6 Proximity sensor 10 Packaging material (packaging material) supply・ Feed unit 11, 15 Guide roller 12 Presser roller 13 Feed roller 14 Feed roller servo motor 20 Packaged product supply / filling unit 21 Supply conveyor 21a Conveyor belt 21b Positioning attachment 21c Drive roller 22 Drive roller servo motor 23 Cylinder Vessel (former)
30 Film pulling / center seal / meshing unit 31a, 31b Film pulling roller 32 Servo motor for film pulling roller 33a, 33b Center seal block 34 Opening / closing device 35a, 35b Facing roller 36 Servo motor for mating roller 37 Intermediate conveyor 37a Conveyor belt 37b Drive Roller 38 Drive roller servo motor 40 End seal / cutting unit 41, 42 End seal block 41a, 42a Central groove 41b, 42b Heater block holder 41c Guide hole 43 Open / close toggle mechanism 43a Rotating shaft 43b Rotating plate 43c, 43d Driven arm 43e, 43f Holding member 44 Heater block opening / closing servo motor 44a Reducer 45 Holder drive block 46a, 46b Support block 46c, 46d Connecting plate 47a, 47b Connecting rod 48 Cutting device 48a Support plate 48b Air cylinder 48c Piston rod 48d Slider 48e, 48f Guide Rod 49 Cutting knife 50 Package discharge unit 51 Discharge conveyor 51a Conveyor belt 51b Drive roller 52 Drive roller servo motor 60 Control device 61 Operation panel 62 Discrimination device 63 Alarm device MR Winding packaging material Fi Continuous film TFi Cylindrical continuous film t, t1 to t4, τ1 to τ8 (elapsed) time a1 to a3, b1 to b3, c11 to c32, d1 to d3 time zone e1 to e3 time zone (detection timing)
TC, TC1, TC2, TC3, TC4 cycle signals

Claims (3)

Equipped with an oxygen scavenger-encapsulated bag containing an oxygen scavenger containing iron powder and a transport device that generates a package filled with an object to be packaged at regular intervals and transports the package on a conveyor belt. It is a packaging device
The package mounted on the conveyor belt of the conveyor belt is fixedly arranged close to the position where the package is transported, and it is detected that the oxygen scavenger-filled bag is present in the package without contacting the conveyor belt. Proximity sensor that outputs the detection signal
A packaging device including a discrimination device that discriminates whether or not a detection signal is output from the proximity sensor at a detection timing set based on the fixed cycle and outputs the discrimination result. The packaging device includes a control device that controls the operation of the drive device of the packaging device.
The control device generates a cycle signal for generating the package in the fixed cycle.
The packaging device according to claim 1, wherein the detection timing is set based on the cycle signal. The packaging device is a horizontal pillow packaging machine, the transport device is a discharge conveyor of the horizontal pillow packaging machine, and the proximity sensor is attached to the lower side of the conveyor belt of the discharge conveyor where the package moves. Be,
The packaging device according to claim 1 or 2, wherein the detection timing is a timing set so that the package is conveyed by the discharge conveyor and passes in the vicinity of the proximity sensor.

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