JP7448141B2 - Packaging machine with bottom receiving device - Google Patents

Description

The present invention relates to a packaging machine equipped with a bottom support device that supports each packaging process by holding the bottom of a packaging bag filled with items to be packaged.

BACKGROUND ART Conventionally, packaging machines that mass-produce products by intermittently moving packaging bags and sequentially performing each packaging process have been widely used.
This type of packaging machine is required to support each packaging process by holding a packaging bag or the like in carrying out each packaging process. For example, it is required to suppress shaking of the packaging bag after filling the packaged item, or it is required to apply vibration to the packaging bag in order to promote the dropping of the packaged item into the packaging bag.

For example, in the case of the former, the packaging bag is held down by a guide such as a circumferential guide to suppress the swinging of the packaging bag, and in the latter case, dropping is promoted by a vibrating means or the like that taps the bottom of the packaging bag.

However, in the former case, there was a problem in that the height could not be adjusted sufficiently for each product. Furthermore, conventional packaging machines have been limited in the steps that they can assist in, such as by holding the packaging bag, during the packaging process.

Patent No. 6229120

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a packaging machine equipped with a bottom support device that can assist each packaging process by adjusting vibration conditions, height, etc. in each process according to the product.

To solve the above problem, a movable body equipped with a plurality of grip pairs is intermittently moved to each packaging station where each packaging process is performed, and is supported in a hanging manner by the grip pairs and intermittently moves to each of the packaging stations. A packaging machine for filling packaging bags with objects to be packaged and sealing bag openings, wherein all the packaging stations are provided with bottom receiving devices capable of holding the bottoms of the packaging bags; The bottom receiving device is configured to be movable along the annular path and configured to sequentially move the packaging stations intermittently in synchronization with the intermittent movement of the packaging bag, and the bottom receiving device is configured to move along the bottom of the packaging bag. The bottom receiver includes a bottom receiver that receives the bottom receiver, an elevating part that raises and lowers the bottom receiver, and an air drive unit that controls the raising and lowering of the bottom receiver in the elevating part and the vibration of the bottom receiver. This is a packaging machine equipped with a bottom receiving device (claim 1).

The bottom receiving device is configured such that a base end thereof is movable along the annular passage, and the bottom receiving device has a plurality of rod-shaped bodies extending outward from the movable body, and Preferably, the elevating section has an elevating rail configured to allow the bottom receiver to move up and down (Claim 2). It is preferable that the bottom support device is controlled such that the bottom part of the filled packaging bag is held by the bottom support body at the packaging object filling station (Claim 3 ).

It is preferable that the bottom receiving device is controlled to apply vibration to the bottom of the packaging bag at the bottom receiving body at the gas filling station (Claim 4 ). It is preferable that the bottom support device is controlled at the sealing station so that the bottom of the packaging bag is lifted by the bottom support body (Claim 5 ). It is preferable that the bottom receiver device is controlled such that the bottom receiver lowers to release the bottom portion of the packaging bag at the product discharge station (Claim 6 ).

According to the packaging machine equipped with the bottom support device according to claim 1 or 2 , it is possible to assist each packaging process by adjusting the vibration conditions and height in any process according to the product, and Since the bottom support device can provide necessary assistance even to packaging bags that are being moved intermittently, it is possible to provide continuous and smoother assistance to one packaging bag throughout each packaging process.
According to the packaging machine equipped with the bottom support device according to the third aspect, it is possible to suppress the packaging bag from shaking after being filled with the object to be packaged.
According to the packaging machine equipped with the bottom receiving device according to the fourth aspect of the present invention, it is possible to facilitate the dropping of the object to be packaged into the packaging bag.
According to the packaging machine equipped with the bottom support device according to the fifth aspect, air can be removed from the packaging bag before sealing.
According to the packaging machine equipped with the bottom support device according to claim 6 , the packaging bag can be placed on the conveyor for product discharge.

1 is a schematic plan view of an embodiment of a packaging machine equipped with a bottom receiving device of the present invention. FIG. 2 is a schematic right side view of the bottom support device shown in FIG. 1; FIG. 2 is an explanatory diagram for explaining a packaging process in the packaging machine equipped with the bottom receiving device shown in FIG. 1. FIG. FIG. 2 is an explanatory diagram for explaining a packaging process in the packaging machine equipped with the bottom receiving device shown in FIG. 1. FIG. FIG. 2 is an explanatory diagram for explaining a packaging process in the packaging machine equipped with the bottom receiving device shown in FIG. 1. FIG. FIG. 2 is an explanatory diagram for explaining a packaging process in the packaging machine equipped with the bottom receiving device shown in FIG. 1. FIG. FIG. 2 is an explanatory diagram for explaining a bottom support device of a packaging machine including the bottom support device shown in FIG. 1 . It is a partially enlarged left side view for explaining the bottom support device of the packaging machine equipped with the bottom support device shown in FIG. FIG. 2 is a partial enlarged plan view for explaining the bottom support device of the packaging machine including the bottom support device shown in FIG. 1;

The present invention is a packaging machine that intermittently moves a packaging bag a to each packaging station 1 to 10 where each packaging process is performed, fills the packaging bag a with the article to be packaged, and seals the bag opening. The packaging stations 1 to 10 are provided with a bottom receiving device 11 capable of holding the bottom of the packaging bag a, and the bottom receiving device 11 includes a bottom receiving device 12 for receiving the bottom of the packaging bag a, and a bottom receiving device 11 that can hold the bottom of the packaging bag a. 12, and an air drive unit 14 that controls the raising and lowering of the bottom receiver 12 in the elevator section 13 and the vibration of the bottom receiver 12. We have also realized a packaging machine P equipped with a bottom support device 11 that can assist each packaging process by adjusting vibration conditions, height, etc.

A packaging machine equipped with a bottom receiving device according to the present invention will be explained using an embodiment shown in FIGS. 1 to 9.
The packaging machine P equipped with the bottom receiving device of this embodiment moves the packaging bag a intermittently to each of the packaging stations 1 to 10 where each packaging process is performed, fills the packaging bag a with the object to be packaged, and closes the bag opening. It is a packaging machine for sealing, and all the packaging stations 1 to 10 are provided with a bottom receiving device 11 capable of holding the bottom of the packaging bag a. The bottom receiver 12 has a bottom receiver 12 that receives the bottom receiver 12, an elevating section 13 for raising and lowering the bottom receiver 12, and an air drive unit 14 that controls the raising and lowering of the bottom receiver 12 in the lifting section 13 and the vibration of the bottom receiver 12. . Each configuration will be described in detail below.

As shown in FIG. 1 or 2, the packaging machine P equipped with the bottom receiving device of this embodiment moves a movable body 20 equipped with a plurality of grip pairs g with intermittent stops for each of a plurality of processes. This is a packaging machine that fills a packaging bag a supported in a hanging manner by a pair of grips g with an article to be packaged and seals the bag opening.

The packaging bag a may be, for example, a gusset bag having folded portions on both side edges, a self-standing bag having a folded portion at the bottom, a zippered bag or a flat bag in which the bag is equipped with a zipper. Further, examples of the items to be packed in the packaging bag a include pet food, fertilizer, rice, sugar, and the like.

The packaging machine P equipped with the bottom receiving device in this embodiment is a rotary packaging machine, but is not limited to this. It may also be a truck moving packaging machine that moves horizontally along a circular path consisting of semicircular sections at both ends.

In the packaging machine P equipped with this bottom receiving device, as shown in FIG. It is provided so as to protrude in the radial direction.

As shown in FIGS. 3 to 6, the packaging machine P equipped with the bottom receiving device of this embodiment includes a bag feeding process (first process), a printing process (step 2-1) of opening the zipper, printing expiration date, etc. , printing inspection process (2-2 process), nozzle insertion, bag opening, bag expansion, funnel insertion process for filling the packaged object (3rd process), packaged item filling process (4th process), gas filling/bottom Vibration process, (5th process), (6th process) or (7th process), top seal process (8th process), seal cooling/product discharge process (9th process), defective product/empty bag discharge process ( After the 10th step), the items to be packaged are filled into the packaging bag a and sealed to mass-produce the product.

In the bag feeding process (first process), as shown in FIG. 1 or FIG. The packaging bags a, which are sequentially conveyed, are placed in a vertical position and are sequentially moved intermittently and delivered to a waiting grip g. Specifically, a suction cup 32 that is movable up and down by a servo motor (not shown) turns over a large number of packaging bags a stacked on a conveyor 31 one by one from the top, and a rotating arm (not shown) is used to roll up a large number of packaging bags a to a predetermined height. It is configured such that it can be lifted up and handed over to the grip g in sequence. In addition, since the packaging machine P equipped with the bottom support device of this embodiment performs each packaging process on two packaging bags a at the same time in each packaging process, the grip pair g is attached to each packaging station 1 to 10. Each pair is attached to the movable body 20 so as to move intermittently.

In the process of printing the zipper opening and expiration date (Step 2-1), as shown in Figure 3 (2), the zipper opening is opened to open the zipper provided on the inner surface near the bag opening b of the packaging bag a, and A printing process is performed to print the expiration date and the like on the packaging bag a. Specifically, in the chuck opening/printing station 2, as a chuck opening, the vicinity of the bag opening of the packaging bag a, which is supported in a hanging manner with the upper ends of both ends gripped by the grip pair g, is opened by suction cups 33 from the front and back outer surfaces, respectively. It is configured to open the zipper provided on the inner surface of the bag mouth of the packaging bag a by suctioning it and opening it, and moving the clamping member 34 to the outside while clamping the front and back surfaces of the packaging bag a. Furthermore, the expiration date and the like are printed on the packaging bag a by printing and stamping 35.

In the printing inspection process (Step 2-2), as shown in Figure 4 (1), it is inspected to see if the characters printed in the printing process (Step 2-1) such as the expiration date are properly printed. It will be done. This step is performed using the camera 36 on the packaging bag a that is being moved between the chuck opening/printing station 2 and the opening/packaging material filling funnel insertion station 3.

In the nozzle insertion/bag opening/bag expansion/packaged material filling funnel insertion step (3), at the opening/packaged material filling funnel insertion station 3, as shown in FIG. The packaging bag a is inflated by opening the mouth b with the suction cup 37, the gas nozzle 38 is inserted, and the funnel 50 for filling the packaged object is inserted from the bag mouth b.

In the packing material filling step (4), at the packing material filling station 4, as shown in FIG. The packaged object c is filled into the packaging bag a. Specifically, the funnel 80 for supplying the packaged material descends, and a set amount of the packaged material c to be filled into one packaging bag a is supplied into the funnel 50 for filling the packaged material. The article to be packaged c is filled into the packaging bag a from the outlet 51 of the filling funnel 50.

In the gas filling/bottom vibration steps (5), (6), and (7), inert gas (nitrogen gas in this embodiment) is ejected from the gas nozzle 38 at the gas filling stations 5, 6, and 7 to mix air and inert gas. While the active gas is replaced, the bottom of the packaging bag a is vibrated by the bottom receiver 12 of the bottom receiver 11.

In the top sealing step (8), at the sealing station 8, the vicinity of the bag opening b of the packaging bag a is horizontally sealed and sealed by the seal bar 39, as shown in FIG. 5(2).

In the seal cooling/product discharge step (9), the packaging bag a determined to be a good product at the product discharge station 9 is cooled by the cooling bar 40 near the bag opening b of the packaging bag a, as shown in FIG. 6(1). While being cooled from both sides, the gripping claws (not shown) of the pair of grips g open to release the grip on the packaging bag a, and the product is discharged from the machine by the product discharge conveyor 41.

In the defective product/empty bag discharge step (10), the packaging bag a that is determined to be a defective product or an empty bag at the defective product discharge station 10 is removed by the gripping claws of the grip pair g, as shown in FIG. 6(2). (not shown) is opened, the grip on the packaging bag a is released, and the defective product is discharged from the machine through the defective product discharge chute 42.

As described above, the packaging machine 1 equipped with the bottom support device of this embodiment sequentially mass-produces products by performing the above-mentioned packaging processes at each of the packaging stations 1 to 10 on the packaging bag a that moves intermittently. is configured to do so.

The feature of the present invention is that, as shown in FIG. The number of bottom receiving devices 11 that can hold the bottom of the packaging bag a is the same as the number of packaging stations. There are also 10 points). This makes it possible to assist each packaging process by adjusting vibration conditions, height, etc. in any process according to the product. Each configuration of the bottom support device 11 will be described below.

The bottom receiver 12 of the bottom receiver 11 is a part that receives the bottom of the packaging bag a, and as shown in FIG. have. However, the form of the bottom receiving body 12 may be three or more rod-shaped bodies, and is not limited to the rod-shaped bodies 12a and 12b, for example, a plate-shaped body, etc., which can be supported by contacting the bottom of the packaging bag a. Any form may be used as long as it is a suitable form.

The elevating section 13 is a part for elevating and lowering the bottom receiver 12, and is constituted by an elevating rail in which the base end 12c of the bottom receiver 12 is configured to be movable up and down.

The air drive unit 14 (air servo) controls the raising and lowering of the bottom receiver 12 in the elevating section 13, the vibration of the bottom receiver 12, and the like. Note that the bottom receiver 12 and the air drive unit 14 shown in two places in FIG. 8 represent vertical movement, and actually exist only in one of them.

The bottom receiving device 11 is a synchronized bottom receiving device, and is configured to move intermittently through the packaging stations 1 to 10 in synchronization with the intermittent movement of the packaging bag a. As a result, the bottom support device 11 can provide necessary assistance even to the packaging bag a that is intermittently moving, and can provide continuous and smoother assistance to one packaging bag a over multiple packaging processes. It can be carried out. Specifically, as shown in FIG. 9, the base end 11a of the bottom support device 11 is configured to be movable along an annular passage 15 provided concentrically with the moving body 20, and The packaging stations 1 to 10 are controlled to move sequentially intermittently in synchronization with the intermittent movement.

In this embodiment, the bottom receiving device 11 is configured such that at the packing material filling station 4, after the packing material c is filled, the bottom receiving body 12 rises to lift and hold the bottom of the packaging bag a. It is controlled as follows. Thereby, it is possible to suppress the packaging bag a from shaking after being filled with the object to be packaged c.

Further, the bottom receiving device 11 is controlled in the gas filling stations 5, 6, and 7 so that the bottom receiving body 12 moves up and down to apply vibration to the bottom of the packaging bag a. Thereby, it is possible to facilitate the dropping of the packaged object c into the packaging bag a.

Furthermore, the bottom support device 11 is controlled in the sealing station 8 so that the bottom support body 12 rises and lifts the bottom part of the packaging bag a with the bottom support body 12. Thereby, air can be removed from the packaging bag a before sealing.

Further, the bottom receiving device 11 is controlled such that the bottom receiving body 12 is lowered at the product discharge station 9 to release the bottom portion of the packaging bag a. Thereby, the packaging bags a can be sequentially placed on the product discharge conveyor 41. In addition, as shown in FIG. 6(2), the bottom receiver 12 passes through the groove 41a extending in the conveying direction of the product discharge conveyor 41, and as shown in FIG. It is configured to descend to below 41. In FIG. 6(1), the packaging bag a shown inside the packaging bag a is in a falling state.

As mentioned above, the packaging machine P equipped with the bottom receiving device of this embodiment includes a packing material filling station 4, gas filling stations 5, 6, 7, a sealing station 8, a product discharge station 9, and movement between them. Although the bottom receiving device 11 is used therein, the present invention is not limited to this, and devices used in other packaging stations depending on the product are also included in the scope of the present invention.

1 to 10 Packaging station 11 Bottom receiver 12 Bottom receiver 13 Lifting section 14 Air drive unit 15 Annular passage 20 Moving body 30 Bag feeding device (bag feeding means)
31 Conveyor conveyor 32 Suction cup 33 Suction cup 34 Holding member 35 Printing and stamping 36 Camera 37 Suction cup 38 Gas nozzle 39 Seal bar 40 Cooling bar 41 Product discharge conveyor 42 Defective product discharge chute 50 Funnel for filling packaged items 51 Discharge port 80 Supply of packaged items Funnel P Packaging machine a equipped with a bottom support device Packaging bag c Item to be packaged g Grip pair

Claims (6)

A movable body equipped with a plurality of pairs of grips is intermittently moved to each packaging station where each packaging process is performed, and the packaging bag, which is supported in a hanging manner by the pair of grips and is intermittently moved at each of the packaging stations, is filled with items to be packaged. A packaging machine that seals a bag opening by
All of the packaging stations are provided with a bottom support device capable of holding the bottom of the packaging bag, and
The bottom receiving device is configured to be movable along an annular path and configured to sequentially and intermittently move the packaging station in synchronization with the intermittent movement of the packaging bag,
The bottom receiver device includes a bottom receiver that receives the bottom of the packaging bag, an elevating section through which the bottom receiver ascends and descends, and an air pump that controls the elevation of the bottom receiver and the vibration of the bottom receiver in the elevating section. A packaging machine equipped with a bottom receiving device, characterized in that it has a drive unit. The bottom receiving device is configured such that a base end thereof is movable along the annular passage, and the bottom receiving device has a plurality of rod-shaped bodies extending outward from the movable body, and 2. A packaging machine equipped with a bottom receiving device according to claim 1, wherein the lifting section has a lifting rail configured to allow the bottom receiving body to move up and down. 3. The packaging equipped with a bottom support device according to claim 1 , wherein the bottom support device is controlled to hold the bottom portion of the packaging bag after filling with the bottom support body at the packaging object filling station. Machine. 4. The packaging equipped with a bottom support device according to claim 1, wherein the bottom support device is controlled so that the bottom support body applies vibration to the bottom of the packaging bag at a gas filling station. Machine. 5. A packaging machine equipped with a bottom support device according to claim 1, wherein the bottom support device is controlled in a sealing station so that the bottom portion of the packaging bag is lifted by the bottom support body. The bottom receiving device includes the bottom receiving device according to any one of claims 1 to 5 , wherein the bottom receiving device is controlled so that the bottom receiving body lowers and the bottom holding of the packaging bag is released at the product discharge station. packaging machine.

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