JP5881036B2 - Horizontal bag making and packing machine - Google Patents

Description

  The present invention relates to a horizontal bag making filling and packaging machine.

  In general, in a horizontal packaging machine, a belt-shaped packaging material is pulled out from a film roll by a film conveying device and sent downstream, and the film is transferred in a horizontal direction while being formed into a cylindrical shape by a cylinder making machine. Articles are sequentially supplied into the cylindrical film. A center seal is applied to the overlapping portion in the longitudinal direction of the tubular film, and further, end seals are applied to the front and rear portions by an end seal device so as to sandwich the article in the tubular film, and cutting is performed. In this way, a so-called pillow package is produced. Each of the film transport device, the supply device, and the end seal device is driven by a servo motor and controlled to operate in synchronization with the control device (see, for example, Patent Document 1).

  A supply apparatus is a supply conveyor comprised from the endless chain to which the pusher attachment which supports and conveys the rear part of a to-be-packaged object is attached at predetermined intervals. The supply device is driven by a supply conveyor drive servomotor, and a pulse signal corresponding to the transfer position and transfer speed of the supply conveyor is output from an encoder attached to the supply conveyor drive servomotor. The supply conveyor is driven at a speed based on the packaging capacity data input. In addition, each pusher attachment attached to the supply conveyor is moved upward in a state where it falls down at the position where the article to be packaged is transferred to the cylindrically formed film by the cylinder making machine, and then again in the upward state. To support each package. In addition, the supply conveyor includes a supply origin sensor that outputs an origin signal when the passage of each pusher attachment is detected. The supply origin sensor detects the pusher attachment in the adjustment operation before the standard operation (operation for synchronizing the supply conveyor drive servo motor, film feed mechanism drive servo motor, and end sealer drive servo motor). To output the origin signal. Once the origin signal from the supply origin sensor is output once, the origin signal is stored, and thereafter the origin signal from the supply origin sensor is not used. The current position of each pusher attachment is recognized based on the signal from the supply origin sensor and the signal from the encoder (see, for example, paragraphs 12 and 15 of Patent Document 2).

  As shown in FIGS. 3A and 3B, the pusher attachment 9 includes an attachment part 10 and a pusher part 11. The attachment part 10 is fixed on the endless chain at a predetermined interval, and serves as a pedestal to which the pusher part 11 is attached. The pusher portion 11 is a member that supports and conveys the rear portion of the package with a rod-like member attached to the attachment portion 10. The pusher part 11 has a different height and shape depending on the height and shape of the packaged product, and may be removed for cleaning and washing because it is a part that directly touches the packaged product.

  Furthermore, in the case of manufacturing by using both a short packaged product and a long packaged product, there is a case where a multiple pitch is used. This is a method of securing a wide supply interval by removing the pushers 11 at regular intervals. FIG. 4A shows an example of a double pitch, and FIG. 4B shows an example of a triple pitch. If the pitch is doubled, the pusher 11 is removed every other time, and the normal interval is doubled. If the pitch is 3 times, the pusher 11 is removed every other time, and the usual three times interval is secured. Yes. That is, assuming that the desired multiple is N, the pusher unit 11 is removed every N-1 units, and a normal N-fold supply interval is secured.

  For these reasons, the pusher portion 11 is fixed to the attachment portion 10 so as to be removable. As for the fixing method, as shown in FIG. 3 (b), it is fixed with a pusher portion fixing bolt 12 or fixed with a one-touch lock mechanism fixed with a claw or the like (not shown).

  The pusher 11 is removed and attached manually, and the attachment is confirmed visually. If there is an error in the installation or removal, and if it has been overlooked even in the confirmation work, if it is operated as it is, packaging defects will occur. In addition, if the mounting is incomplete, there is a possibility that an accident in which the pusher portion 11 is dropped during the operation may occur.

Japanese Patent Publication No.7-110645 JP-A-8-58705 JP 2010-105669 A

  With a simple configuration and without increasing costs, the pusher part of the pusher attachment of the supply conveyor is monitored during machine operation, and it is equipped with a function to reliably detect dropouts and mounting errors and prevent the occurrence of defective packaging. It is desired to provide a horizontal bag making filling and packaging machine.

In the present invention, a belt-shaped packaging material is pulled out from a film roll by a film conveying device and is sent downstream, and the film is transferred in a horizontal direction while being formed into a cylindrical shape by a cylinder making machine, and is supplied into the cylindrical film by a supply device. Articles are sequentially supplied to the longitudinally overlapped portion of the cylindrical film, and center seals are applied. Further, end seals are applied to the front and rear portions of the cylindrical film by end seal devices so as to sandwich the articles. In the horizontal bag making and filling machine for producing a pillow package by cutting the middle part of the end seal,
A pusher attachment that supports and conveys the rear part of the package is attached to an endless chain driven by a servo motor at a predetermined interval, and the supply device detects the pusher attachment and outputs the origin position during adjustment operation. A supply conveyor equipped with a sensor for detecting the origin position,
The pusher attachment is composed of an attachment part fixed to the endless chain and a pusher part detachably attached from the attachment part,
During operation of the machine, the origination position detection sensor is used to check whether the pusher part of the pusher attachment is dropped and the position of the pusher is defective. A horizontal type bag making filling and packaging machine, which is a supply conveyer capable of removing a pusher portion, has a supply device provided with a function to prevent it in advance.

The present invention provides a horizontal bag-filling and packaging machine in which the pusher part of the pusher attachment can be removed. When manufacturing a long packaged product as well, remove it when using multiple pitches, and monitor the pusher part of the pusher attachment of the supply conveyor during machine operation when it is installed. It can realize a function that reliably detects omissions and mounting errors and prevents the occurrence of defective packaging. Furthermore, since the origin detection sensor of the supply conveyor which is already equipped and is not used during operation is used, the cost is not increased with a simple configuration.

  Since the present invention uses the origin detection sensor of the supply conveyor that is already equipped and not used during operation, the pusher part of the pusher attachment of the supply conveyor is monitored during operation of the machine without increasing the cost with a simple configuration. In addition, it is possible to reliably detect a dropout or an installation error and prevent the occurrence of defective packaging.

It is a figure explaining the outline of a horizontal type bag making filling packaging machine. It is a figure of the time chart of the drop-off inspection of a pusher attachment. It is a figure explaining the structure of a pusher attachment. It is a figure explaining a multiple times pitch.

  A horizontal bag making and filling machine as an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view of a horizontal bag making and filling machine to which the present invention is applied. FIG. 1A is a schematic view seen from the side, and FIG. 1B is a schematic view seen from the top. The strip-shaped packaging material Fw drawn out from the film roll Fr mounted on the winding shaft 1 is conveyed downstream by the paper feed roller 2, is curved by the cylinder-making machine 3, is polymerized at the longitudinal edge, and is tubular-wrapped. A material Ft is formed. The tubular packaging material Ft is conveyed by rotating the paper drawing roller 4 composed of a pair of rolls that hold the superposed portion of the tubular packaging material Ft while the packaged product P is conveyed into the cylinder by the supply conveyor 7. Then, it is conveyed further downstream. The center seal device 5 downstream of the paper drawing roller 4 performs center seal on the overlapping surface of the cylindrical packaging material Ft. Thereafter, the cylindrical packaging material Ft containing the packaged product P is subjected to end sealing and cutting before and after the packaged product P inside the cylindrical packaging material Ft is sandwiched by the end sealer 6 to manufacture the pillow package Bp. To do. The end seal device incorporates a cutter (not shown) and cuts it.

  A film transport device composed of a paper feed roller 2, a paper drawing roller 4, a center seal device 5, a supply device composed of a supply conveyor 7, and an end seal device 6 are driven by a servomotor and operate in synchronization with each other by a control device. So that it is controlled. The technology for driving and synchronizing the film transport, supply, and end seal device with separate servo motors is well known and will not be described in detail (for example, see Patent Document 1).

  The belt-shaped packaging material Fw and the cylindrical packaging material Ft are conveyed by the cooperation of the paper feed roller 2, the paper drawing roller 4, and the center seal device 5. These rolls may be driven by a single servo motor. In this embodiment, the paper feed roller 2 is a paper feed roller drive servo motor SM2A, the paper draw roller is a paper draw roller drive servo motor SM2B, and a center seal device. Are driven separately by the center seal device drive servo motor SM2C, and synchronously convey the packaging material downstream at a predetermined speed.

  The end seal device 6 of the present embodiment is called a box motion type, and a pair of heater blocks 6a and 6b arranged above and below with the tubular film Ft sandwiched between the seal surfaces. It moves with a predetermined trajectory while maintaining That is, both the heater blocks 6a and 6b move close to each other from the reference position and sandwich the tubular film Ft from above and below, thereby pressurizing and heating the film portion in contact with the sealing surface with a predetermined pressure. The heater blocks 6a and 6b move forward along the moving direction of the tubular film Ft while maintaining the state in which the heater films 6a and 6b approach each other and sandwich the tubular film Ft as described above. The moving speed at this time is equal to the moving speed of the tubular film Ft. When the pair of heater blocks 6a and 6b move by a predetermined distance, the heater blocks 6a and 6b move away from each other and move in the direction opposite to the moving direction of the tubular film Ft to reach the reference position. Since the box motion operation is a conventionally known technique (see, for example, paragraphs 23 to 24 of Patent Document 3), the detailed explanation is omitted, but the heater blocks 6a and 6b are each mounted on a mounting base (not shown). The cam floor (not shown) provided on the mounting base matches the groove cam (not shown) provided on the cam plate (not shown), and revolves as described above according to the shape of the groove cam. . The cam plate (not shown) is rotated by the servo motor SM3 so as to synchronize with the conveyance speed of the tubular film Ft. Also, instead of using a cam in this way, a plurality of drive motors such as a drive motor for moving the heater blocks 6a and 6b up and down and a drive motor for moving forward and backward are provided, and each of these drive motors is provided. The heater blocks 6a and 6b can be revolved by operating at an appropriate timing.

  The supply conveyor 7 includes an endless chain 8 to which a pusher attachment 9 that supports and conveys the rear portion of the article to be packaged P is attached at a predetermined interval, a chain drive sprocket 14 that supports and drives the endless chain 8, and a chain drive sprocket 14 It is comprised from the supply conveyor drive servomotor SM1 which drives. The supply conveyor 7 is driven by a supply conveyor drive servomotor SM1, and a pulse corresponding to the transfer position and transfer speed of the supply conveyor 7 from an encoder (not shown) attached to the supply conveyor drive servomotor SM1. A signal is output. The supply conveyor 7 is driven at a speed based on the data input of the packaging capacity. In addition, after each pusher attachment 9 attached to the supply conveyor has been moved in a state of being tilted downward at a position where the article P is delivered to the film Ft formed into a cylinder by the cylinder making device 3. Then, it goes up again and supports each package. In addition, the supply conveyor includes a supply origin sensor 13 that outputs an origin signal when the passage of each pusher attachment 9 is detected. The supply origin sensor 13 is an adjustment operation before normal operation (operation for synchronizing the supply conveyor drive servo motor, film feed mechanism drive servo motor, and end sealer drive servo motor), and pusher attachment 9. Is detected and an origin signal is output. Once the origin signal from the supply origin sensor 13 is output, the origin signal is stored, so that the origin signal from the subsequent supply origin sensor is not used. The current position of each pusher attachment is recognized based on the signal from the supply origin sensor and the signal from the encoder. The control of the supply conveyor 7 is also a known technique (see, for example, paragraphs 12 and 15 of Patent Document 2).

  As shown in FIGS. 3A and 3B, the pusher attachment 9 includes an attachment part 10 and a pusher part 11. The attachment part 10 is fixed on the endless chain 8 at a predetermined interval, and serves as a pedestal to which the pusher part 11 is attached. The pusher portion 11 is a member that supports and conveys the rear portion of the package with a rod-like member attached to the attachment portion 10. The pusher part 11 is fixed to the attachment part 10 so as to be removable. As for the fixing method, as shown in FIG. 3 (b), it is fixed by a pusher portion fixing bolt 12. This is because the pusher unit 11 has different heights and shapes to match depending on the height and shape of the packaged product, so it can be replaced when the product item is changed. This is because the pusher portions 11 are removed every predetermined number in order to perform a multiple pitch in the case where a short length packaged product and a long length packaged product are manufactured together.

  The pusher 11 is removed and attached manually, and the attachment is confirmed visually. If there is an error in the installation or removal, and if it has been overlooked even in the confirmation work, if it is operated as it is, packaging defects will occur. In addition, if the mounting is incomplete, there is a possibility that an accident in which the pusher portion 11 is dropped during the operation may occur. Therefore, in this embodiment, the pusher attachment 9 of the supply conveyor 7 is used during the machine operation by using the supply origin sensor 13 which is disposed at a position where the pusher attachment 9 can be detected and is not used except during the adjustment operation. It has a function of monitoring the section 11 to reliably detect dropouts and mounting errors and prevent the occurrence of defective packaging.

  As shown in FIG. 2, the supply origin sensor 13 is disposed at the upstream end portion of the supply conveyor 7 and can monitor the pusher portion 11 of the pusher attachment 9. FIG. 2 shows an operation when all the pusher attachments 9 are attached, that is, in a normal pitch state. Since the control device (not shown) can grasp the moving speed of the supply conveyor 7, it can predict at which timing the supply origin sensor 13 detects the pusher unit 11. Therefore, as shown in FIG. 2, the control device (not shown) checks the detection signal 16 input from the supply origin sensor 13 at each predicted inspection timing 15 and determines the determination signal 17. If the feed origin sensor 13 detects the pusher unit 11 at the inspection timing 15 and the detection signal 16 is ON, the determination signal 17 is in an OFF state because it is normal, and the operation is continued. However, if the feed origin sensor 13 does not detect the pusher section 11 at the inspection timing 15 and the detection signal 16 is OFF, the pusher section 11 is not attached or has been dropped, so the determination signal 17 Turns ON, stops operation and generates an alarm.

  Although not shown, in the case of a multiple pitch, the control device (not shown) is configured to be able to grasp how many pushers 11 are removed, so that the inspection timing 15 is determined at the timing of each interval. By checking the detection signal 16, the pusher unit 11 checks for mounting errors and omissions and stops the machine with an alarm.

  The horizontal bag making filling and packaging machine of the present embodiment uses the origin detection sensor 13 of the supply conveyor 7 that is already equipped and is not used during operation. The pusher portion 11 of the pusher attachment 9 of the supply conveyor 7 can be monitored to reliably detect a drop-off or attachment error and prevent a packaging failure from occurring.

DESCRIPTION OF SYMBOLS 1 Winding shaft 2 Paper feed roller 3 Tube making machine 4 Paper drawing roller 5 Center seal device 6 End seal device 6a Upper heater block 6b Lower heater block 7 Supply conveyor 8 Endless chain 9 Pusher attachment 10 Attachment part 11 Pusher part 12 Pusher Part fixing bolt 13 Supply origin sensor 14 Chain drive sprocket 15 Inspection timing 16 Detection signal input 17 Determination signal 18 Machine state SM1 Supply conveyor drive servomotor SM2A Paper feed roller drive servomotor SM2B Paper draw roller drive servomotor SM2C Center seal device drive servo Motor SM3 End seal device drive servo motor

Claims (1)

The belt-shaped packaging material is pulled out from the film roll by the film conveying device and sent downstream, and the film is transferred in the horizontal direction while being formed into a cylindrical shape by the cylinder making machine, and the articles are sequentially put into the cylindrical film by the supply device. A center seal is applied to the longitudinally overlapped portion of the cylindrical film, and end seals are applied to the front and rear portions by an end seal device so as to sandwich the article in the cylindrical film. In the horizontal bag-making filling and packaging machine that produces the pillow package by cutting the middle part of the seal,
A pusher attachment that supports and conveys the rear part of the package is attached to an endless chain driven by a servo motor at a predetermined interval, and the supply device detects the pusher attachment and outputs the origin position during adjustment operation. A supply conveyor equipped with a sensor for detecting the origin position,
The pusher attachment is composed of an attachment part fixed to the endless chain and a pusher part detachably attached from the attachment part,
During operation of the machine, the origination position detection sensor is used to check whether the pusher part of the pusher attachment is dropped and the position of the pusher is defective. A horizontal bag-filling and packaging machine, wherein the supply device is provided with a function of preventing the pusher portion, and the supply device can be removed.

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