JP7142874B2 - rotary packing machine - Google Patents

Description

Patent Act Article 30, Paragraph 2 applies 1) Exhibition name: JAPAN PACK 2017 2) Date: October 3-6, 2017 3) Sponsor: Japan Packaging Machinery Manufacturers Association 4) Venue: Tokyo Big Site

The present invention relates to a rotary packaging machine that performs a packaging operation using a plastic packaging bag, and more specifically, when the bag size is changed in the rotary packaging machine (for example, when the product is changed) , relates to a rotary packaging machine capable of automatically setting each mechanism at once according to the bag size.

When carrying out packaging work, it may be necessary to change the size of the bag according to the items (products) to be packaged. Conventionally, in the case of a rotary packaging machine, an operator adjusts each mechanism related to the rotary packaging machine to match the size of the bag.

For example, Patent Document 1 is a bag feeder, and in this bag feeder, when the bag size is changed, the gap between the wall plate of the bag feeder and the vacuum pack can be manually adjusted according to the bag size. is configured as Furthermore, in Patent Document 2, the space between the ends of the clamp arms can be adjusted according to the width of the bag. Further, in Document 3, the height of the tapping plate of the vibrating device that vibrates the bag filled with the items to be packaged can be changed in the vertical direction according to the size of the bag.

JP-A-10-167222 JP-A-05-32230 JP 2016-3052 A

As described above, when the bag size is changed, each mechanism of the rotary packaging machine must be reset to the new bag size. It is very troublesome. In particular, when a rotary packaging machine has a complex structure and multiple locations need to be set, a worker who is familiar with the rotary packaging machine to some extent is required. For this reason, workers must be educated and trained to master the rotary packaging machine, which requires cost and time. Therefore, there has been a demand for a rotary packaging machine that can easily and automatically set each mechanism when the bag size changes.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a rotary packaging machine which can automatically and simply set each mechanism according to the bag size when the bag size is changed, and which can be operated relatively easily even by an unskilled person. aim.

According to the present invention, a pair of clamp arms are supported on the periphery of a circular rotor, each clamp arm having a clamp for clamping a bag at its tip, and each section of the rotor is configured to supply a bag, open a bag opening, A rotary packaging machine that fills the object to be packaged, seals the opening of the bag, and carries out the bag containing the object to be packaged,
The rotary packaging machine includes a bag supply mechanism that supplies bags to the pair of clamp arms, a clamp arm mechanism that has a mechanism that can change the distance between the ends of the clamp arms, and a printer that prints the date and expiration date on the bag. a mechanism , an expanding sucker mechanism for widening the bottom or the center of the bag, a tapping mechanism for tapping the bottom of the bag filled with the items to be packaged so that the items to be packaged fit well in the bag, and A degassing mechanism for removing unnecessary air from inside the bag, a carrying-out mechanism for carrying out the bag that has been wrapped, a storage device for storing the bag size, and a storage device for storing the bag size. a control device with a control circuit that gives a command to set according to
The bag supply mechanism is a special bag box equipped with a rope conveyor, and the control device changes the width of both side walls of the rope conveyor on which the bags are placed according to the bag size, and the bags are conveyed by the rope conveyor. Change the position of the stopper that stops the bag at the tip, change the position of the feed conveyor that is placed at the top of the rope conveyor and sends the bag group on the rope conveyor to the tip side,
In the expanding sucker mechanism, the control device moves the position of the sucker that expands the bottom part or the central part of the bag in either or both directions, depending on the size of the bag,
In the deaeration mechanism, the control device changes the length or shortness of the arm of the deaeration device according to the size of the bag, and determines whether the deaeration pieces contact each other or a gap opens. which allows
It is characterized by

With the configuration described above, the rotary packaging machine of the present invention can automatically set a plurality of mechanisms of the rotary packaging machine according to the bag size when the bag size is changed.

A plan view of the rotary packaging device of the present invention Partial side view of the rotary packaging device of the present invention Partial plan view of the rotor of the rotary packaging machine of the present invention Schematic diagram of the printing section of the rotary packaging machine of the present invention Schematic diagram of the bag mouth opening section of the rotary packaging device of the present invention Schematic diagram of the tapping mechanism of the rotary packaging device of the present invention Schematic diagram of the degassing section of the rotary packaging machine of the present invention Schematic diagram of the unloading conveyor of the rotary packaging device of the present invention Block explanatory drawing of the control apparatus of the rotary packaging apparatus of this invention

FIG. 1 is a plan view of the rotary packaging machine of the present invention. In this figure, 1 is a rotor, and 2 is a pair of clamp arms for suspending a bag. When the power of the drive motor is transmitted to the center shaft of the rotor 1 via an intermittent rotation transmission mechanism (not shown), the rotor 1 intermittently rotates clockwise. As will be described below, this rotary packaging machine has sections for carrying out packaging work allotted in the circumferential direction of the rotor 1. In the rotary packaging machine of this embodiment, the sections are evenly allotted to 10 sections.

The number (1) written on the outer circumference of the rotor 1 is the bag supply section, which picks up the bag 4 from the bag supply mechanism 3 with the vacuum sucker 5 and delivers it to the clamp at the tip of the clamp arm 2 . Number (2) is a printing section for printing the date, expiration date, etc. on the bag 4 suspended by the clamp and before being filled with the package. Numeral (3) is the bag mouth opening section, in which the bag mouth is opened by the suction cup of the bag mouth opening mechanism 6, and the spatula of the spatula mechanism 8 is inserted into the opened bag mouth to expand the bag mouth. Move to filling section. Numeral (4) is a filling section, which fills bags from a hopper 9 with items to be packaged. Numeral (5) is a tapping section in which a tapping mechanism 10 taps the bottom of a bag 4 filled with an object to be packaged, for example powder, to better fit the object into the bag 4 . Number (6) closes the mouth of bag 4 after tapping in the bag closing section. Numeral (7) is a degassing section in which the degassing mechanism 11 degasses wasteful air in the upper portion of the bag 4 . Number (8) is a sealing section, which seals the opening of the bag with a sealer. The number (9) is a cooling section, which cools the sealing point sealed by the sealing section (8). Numeral (10) is a carry-out section, where the sealed bag is carried out by a carry-out mechanism.

Next, the mechanism that needs to be set according to the bag size will be explained. First, the bag supply mechanism 3 that is set according to the bag size will be described. In FIG. 1, a special bag box 13, which is a kind of bag feeding mechanism 3, is placed in the bag feeding section (1). The special bag box 13 shown in FIGS. 1 and 2 has a bag box main body 13A and a rope conveyor 13B. Conveyor 13B conveys to stopper 13C side of the tip. On both sides of the bag box main body 13A, side walls 13D whose spacing can be changed according to the size of the bag are erected. The side walls 13D are connected by a threaded rod (not shown) crossing the bag body 13A (see the threaded rod in Patent Document 1). Interval can be changed. The motor of the threaded rod is controlled by a control device 15, which will be described later, and the spacing of the side walls 13D is set according to the bag size.

As shown in FIG. 2, a feed conveyor 16 consisting of a rope-shaped belt is arranged on the upper front end side of the bag box body 13A. The feed conveyor 16 pushes the bag group placed on the rope conveyor 13B from above, and gradually flattens the bag group and feeds it to the stopper 13C side at the tip. The feed conveyor 16 for the special bag box 13 is slidable in the longitudinal direction of the bag box main body 13A according to the size of the bag. The control device 15, which will be described later, also slides the feed conveyor 16 in the longitudinal direction.

Furthermore, as described above, the stopper 13C is provided at the leading end of the rope conveyor 13B of the bag box body to stop the bag 4 at the leading end of the group of bags being conveyed. This stopper 13C is also configured to move in the front-rear direction by the control device 15 according to the size of the bag. Although the details of the movement structure are not shown, a component combining a threaded rod and a female screw or a component combining a rack and a pinion are used and controlled to move forward and backward by a motor.

Next, the clamp arm 2 to be set according to the bag size will be described. FIG. 3 is a plan view showing a state in which the clamp arm 2 provided on the rotor 1 is adjusted according to the bag size. The clamp arm 2 can be adjusted by widening or narrowing the distance between the tips. A rotary packaging machine that widens or narrows the distance between the tips of the clamp arms 2 is already known. The difference of this embodiment from the conventional invention is that the distance between the tips of the clamp arms 2 can be adjusted by the controller 15 together with other mechanisms according to the size of the bag. A mechanism for adjusting the distance between the tips of the clamp arms 2 is not shown, but a known mechanism may be used (see Patent Document 2, for example), and is not particularly limited to a specific configuration.

Next, the printing mechanism 7 that is set according to the bag size will be described. FIG. 4 is a schematic diagram showing the printing mechanism 7 of the printing section (2). This printing mechanism 7 also uses a conventionally known printing device 7A, but the difference between this embodiment and the conventional printing mechanism 7 is that it is moved up and down by the controller 15 together with other mechanisms according to the size of the bag. It is a point to do. The screw rod 7B in FIG. 4 is rotated by a motor 7C at the bottom of the base so that the support arm 7D can be moved vertically. However, this moving structure is not limited to the structure shown in FIG. Further, the printing mechanism 7 may be moved in the horizontal direction of the rotation direction of the rotor 1 by the control device 15 in accordance with the size of the bag. Since the printing position differs depending on whether the size of the bag is large or small, the size of the bag to be used for packaging is adapted to move in the horizontal direction. The structure for moving in the left-right direction may be achieved by providing a linear motor at the tip of the support arm 7D and mounting the printing device 7 on this linear motor, but any mechanism may be used for the movement.

Next, the expansion sucker mechanism 18 to be set according to the bag size will be described. FIG. 5 is a schematic diagram showing an expanding sucker mechanism 18 for opening the bottom and central portions of the bag 4. As shown in FIG. In general, the bag opening is opened by the suction cup of the bag opening mechanism 6, but depending on the bag 4, it may not be enough to open the bag opening, and it may be necessary to expand the bottom or central portion of the bag 4. be. In such a case, an expansion sucker mechanism 18 is provided as shown in FIG. Sometimes you have to. For this reason, as shown in FIG. 5, the expanding sucker mechanism 18 is provided with a mechanism capable of moving vertically and horizontally.

In the mechanism of FIG. 5, when the screw rod 18C is rotated by the motor 18B, the elevating arm 18D provided on the screw rod 18C moves vertically while being guided by the slide rod 18E. The vertical movement distance is controlled by an instruction from the control device 15 according to the size of the bag. An air cylinder for driving the suction cups 18A is housed in a box 18G at the tip of the elevating arm 18D, and the air cylinder moves the pair of suction cups 18A toward and away from each other via a rod 18F. The pair of suction cups 18A approaches the bag 4 and sticks to the bag to spread the bottom or central portion of the bag 4.例文帳に追加In addition, when moving the expansion opening sucker mechanism 18 in the left-right direction, the box 18G can be moved in the left-right direction on the elevating arm.

Next, the tapping mechanism 10 that is set according to the bag size will be described. 6 is a schematic side view of the tapping mechanism 10. FIG. The tapping mechanism 10 is a mechanism for tapping an article filled in the bag 4 with a tapping plate 10A to vibrate the bottom of the bag so that the article can be well accommodated. The tapping mechanism 10 vertically vibrates a vibration shaft 10C by an air cylinder 10B stored under a base, and taps a tapping plate 10A above the vibration shaft 10C via an L-shaped bracket 10D. The stroke of this vibration shaft 10C can be adjusted by the air cylinder 10B. The stroke length of the air cylinder 10B can be adjusted vertically by the controller 15 according to the bag size.

Next, the degassing mechanism 11 to be set according to the bag size will be described. FIG. 7 is a schematic diagram showing how the degassing mechanism 11 is used. The degassing mechanism 11 has a structure in which unnecessary air in the bag 4 is pushed out from the bag 4 by pressing it with a degassing piece 11A at the tip. The degassing mechanism 11 has a pair of "<"-shaped arms 11B whose lower ends are pivotally supported on a base, and is constructed so that the tip side of the arms 11B can be opened and closed by a first air cylinder 11C at the bottom. The length of the arm 11B of the deaeration mechanism 11 can also be lengthened or shortened by the controller 15 according to the size of the bag 4 . The extension and retraction of the arm 11B can be changed in the vertical direction by the second air cylinder 11D. Furthermore, according to the state of the air in the bag 4 and the item to be packaged, the deaeration piece 11A is brought into tight contact with the deaeration piece 11A by the first air cylinder 11C with the bag 4 sandwiched between the deaeration pieces 11A. be able to. However, it is also possible to leave an appropriate gap between the deaeration pieces 11A and hold the bag mouth slightly open while moving the bag 4 to the next sealing section (8). be. As described above, the control device 15 controls the change of the stroke dimension of the tip of the arm 11B and the adjustment of the interval between the deaeration pieces 11A according to the bag size.

Finally, the carry-out mechanism 12 that sets according to the bag size will be described. FIG. 8 is a schematic side view of the carry-out mechanism 12. As shown in FIG. In the carry-out mechanism 12, the upstream end of the carry-out conveyor 12A is vertically moved by an air cylinder 12B according to the size of the bag. The bag sandwiched between the clamps of the clamp arm 2 is dropped onto the upstream end of the carry -out conveyor 12A. Accordingly, the height of the upstream end of the carry-out conveyor 12A is adjusted to reduce the impact caused by dropping. However, not only the upstream end of the unloading conveyor 12A but also the entire unloading conveyor 12A may be configured to move up and down. The control device 15 controls the vertical dimension according to the bag size. In addition, as shown in FIG. 1, the downstream side of the carry-out mechanism may be configured so as to be able to rotate in the horizontal direction around the upstream side. By rotating the downstream side, it is possible to change the unloading place according to the bag size (product) and improve the efficiency of the subsequent packaging work.

Next, the control device 15 that controls the plurality of mechanisms will be described.
FIG. 9 is a block diagram for explaining the control device 15. As shown in FIG. The controller 15 controls each mechanism of the rotary packaging machine according to the bag size as described above. However, this block diagram merely shows an example of the control device, and it goes without saying that other configurations may be possible.

The control device 15 is composed of an input device, an input interface, an output interface, an A/D converter, a drive circuit, a control circuit, an arithmetic circuit, a main memory, and an auxiliary memory. The input device includes an operation panel, a keyboard, and the like.

An operation panel, which is an example of an input device, is provided on the front of the box of the control device 15, etc., and each product name is displayed on the touch panel. When the worker touches the name of the product to be packaged, the bag corresponding to the name of the product is selected as follows, and each mechanism of the rotary packaging machine is set according to the size of the bag. In addition to the product name, the touch panel also displays the packaging capacity, continuous/intermittent operation, function list, and the like.

As described above, when a product name is input from the input device, the signal is input to the input interface. A signal from the rotary packaging machine is also input to this input interface. A signal input to the input interface is A/D converted by the A/D converter, and the digital signal is input to the control circuit.

The control circuit judges the command input from the input device, the arithmetic circuit compares it with the current product name data, and replies to the control circuit. If the current product name data and the input product name data are different, the control circuit calls up the product name data stored in the auxiliary storage device, and reads the current product name data stored in the main storage device. Rewrite with data and store.

The control circuit outputs the product name data stored in the main storage device from the output interface through the drive circuit, issues commands to the mechanisms of the rotary packaging machine, and sets the mechanisms based on the product name data. fix. A bag supply mechanism that supplies bags to a pair of clamp arms, a clamp arm mechanism that has a mechanism that can change the distance between the ends of the clamp arms, a printing mechanism that prints the date, expiration date, etc. on the bag, and the bottom or center of the bag. A suction cup mechanism that expands the bag, a tapping mechanism that taps the bottom of the bag filled with the item to make it easier to fit the item in the bag, and removes unnecessary air from the bag containing the item. A plurality of mechanisms selected from a degassing mechanism and a carry-out mechanism for carrying out the bag that has been wrapped are set simultaneously or sequentially as required.

When the setting is completed, a completion signal is input from each mechanism of the rotary packaging machine through the input interface, and the control circuit that has judged it displays the indication of the completion of setting on the touch panel. After waiting for the display, the worker sets the bag of the designated product in the bag supply mechanism, and enters the next step of the packaging operation.

As described above, conventionally, the operator manually set the bag supply mechanism, clamp arm mechanism, printing mechanism, etc. individually, but the operation can be completed only with the touch panel, so the packaging operation is speedy and easy. In addition, even a worker who is not familiar with the rotary packaging machine can carry out the packaging work in a short time.

INDUSTRIAL APPLICABILITY The present invention is useful in the field of rotary packaging machines in which a bag is filled and packaged while a rotor rotates.

1 rotor 2 clamp arm
3 bag supply mechanism 4 bag 5 vacuum sucker 6 bag opening mechanism
7 printing mechanism
10 tapping mechanism
REFERENCE SIGNS LIST 11 degassing mechanism 12 carry-out mechanism 13 special bag box 15 control device 18 expansion sucker mechanism

Claims (4)

A pair of clamp arms are supported on the circumference of the circular rotor, each clamp arm having a clamp for clamping a bag at the tip thereof, and each section of the rotor feeds the bag, opens the bag opening, and controls the contents to be packaged. A rotary packaging machine that performs filling, sealing of the bag opening, and carrying out of the bag containing the object to be packaged,
The rotary packaging machine includes a bag supply mechanism that supplies bags to the pair of clamp arms, a clamp arm mechanism that has a mechanism that can change the distance between the ends of the clamp arms, and a printer that prints the date and expiration date on the bag. a mechanism , an expanding sucker mechanism for widening the bottom or the center of the bag, a tapping mechanism for tapping the bottom of the bag filled with the items to be packaged so that the items to be packaged fit well in the bag, and A degassing mechanism for removing unnecessary air from inside the bag, a carrying-out mechanism for carrying out the bag that has been wrapped, a storage device for storing the bag size, and a storage device for storing the bag size. a control device with a control circuit that gives a command to set according to
The bag supply mechanism is a special bag box equipped with a rope conveyor, and the control device changes the width of both side walls of the rope conveyor on which the bags are placed according to the bag size, and the bags are conveyed by the rope conveyor. Change the position of the stopper that stops the bag at the tip, change the position of the feed conveyor that is placed at the top of the rope conveyor and sends the bag group on the rope conveyor to the tip side,
In the expanding sucker mechanism, the control device moves the position of the sucker that expands the bottom or center of the bag in either or both directions, depending on the size of the bag,
In the deaeration mechanism, the control device changes the length of the arm of the deaeration device according to the size of the bag, and determines whether the deaeration pieces contact each other or a gap opens. which allows
A rotary packaging machine characterized by: The special bag box of the bag supply mechanism has side walls on both sides of the bag box body, the spacing of which can be changed according to the size of the bag. The spacing between the side walls can be changed by rotating the threaded rod with a motor, the motor of the threaded rod being controlled by a control device to set the side wall spacing according to the bag size,
A feed conveyor consisting of a rope-shaped belt is arranged on the upper front end side of the bag box body, and the feed conveyor is slidable in the longitudinal direction of the bag box body according to the size of the bag. slide in the longitudinal direction,
A stopper is provided at the tip of the rope conveyor of the main body of the bag box to stop the bag at the tip of the group of bags being conveyed. control to
The rotary packaging machine according to claim 1, characterized in that: The expansion sucker mechanism rotates a screw rod by a motor, and a lifting arm provided on the screw rod moves up and down while being guided by a slide rod. controlled by instructions to the motor;
An air cylinder for driving the suction cups is housed in a box at the tip of the lifting arm, and the air cylinder moves the pair of suction cups toward and away from each other via a rod to expand the bottom or central portion of the bag. ,
The control device moves the box on the lifting arm in the left-right direction, and moves the enlarged opening sucker mechanism in the left-right direction.
The rotary packaging machine according to claim 1, characterized in that: The degassing mechanism is configured such that the lower ends of a pair of "<"-shaped arms are pivotally supported by a base, and the distal ends of the arms can be opened and closed by a first air cylinder at the bottom,
In order to lengthen or shorten the length of the arm according to the size of the bag, the control device vertically changes the height of the tip of the arm by means of the second air cylinder,
Depending on the state of the air in the bag and the items to be packaged, the deaeration piece at the tip of the arm is brought into tight contact with the deaeration piece by the first air cylinder with the bag sandwiched between the deaeration pieces. It is possible to move the bag by leaving an appropriate gap between the air piece and the deaeration piece and holding the bag mouth slightly open.
The rotary packaging machine according to claim 1, characterized in that:

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