JPH0741890B2 - Automatic weighing bagging device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention measures various articles such as grains by a desired amount and cuts them out, and selects a corresponding packaging bag from a large number of prepared packaging bags. The present invention relates to a device for automatically taking out the bag and automatically packing the article in the bag.

<Prior Art> Conventionally, various types of automatic bagging devices have been proposed and implemented. For example, JP-A-55-116535 and JP-A-62.
An example is shown in Japanese Patent Publication No.-4034. The general form of these conventional devices is to feed a tubular plastic film from a winding drum and cut it into a predetermined size.
One end is welded and sealed, the article to be packaged is introduced through the opening at the other end, and then the open end is welded and sealed to carry out bagging. Since only one winding drum can be loaded in this bag filling device,
The winding drum must be reloaded each time.

Further, as a technique for loading a plurality of winding drums, Japanese Unexamined Patent Publication (Kokai) No. 53-8296 discloses a paper feeding device in which four drums are arranged on a circumferential line and paper is selectively fed from any of the drums. Something that can be taken out is proposed.

<Problems to be Solved by the Invention> As described above, in the conventional bagging device, although the type of bag can be selected, the work is performed by replacing the winding drum, so the workability is poor and the labor is heavy. Is. On the other hand, grain,
Especially in the case of milled rice, the sales form has been diversified in recent years,
The number of types of packaging required has increased significantly, and packaging of various sizes has to be frequently selected.
For example, for polished rice, in addition to large bag packaging of 10 kg or 20 kg,
Pouches such as 2kg and 3kg need to be packaged. For this,
Since it is not possible to carry out large and small wrapping in the same bag, it is necessary to prepare several bags and to select and use these appropriately, but the conventional device does not handle this at all. However, there is a drawback that the packaging work cannot be performed efficiently and completely automatically.

Further, in the method of loading a plurality of winding drums conventionally proposed as a paper feeding device (Japanese Patent Laid-Open No. 55-8296), since the winding drums are arranged on the circumferential line, the number of winding drums can be reduced. Although it is practical when the number of winding drums is small or the winding drums are small, the required number of loading drums reaches a dozen or so, like the polished rice packaging, and each winding drum is considerably For large ones, the circumference of the arrangement becomes huge, the equipment becomes large, and a large amount of space is required, which cannot be put to practical use in a narrow rice mill.

Further, in order to wrap the bag in various sizes, it is necessary to appropriately adjust the support of the bag according to the size of the bag, but the conventional device does not have a function corresponding to this, which causes a problem in actual use. .

In view of such a point, the present invention can select and use various bags having different sizes and designs according to the size of weighing, and save a lot of packaging material winding drums. It is an object of the present invention to provide a weighing bagging device that can efficiently store all of the work, and can automatically perform all operations from weighing to bagging according to instructions from the control device.

<Means for Solving the Problems> The technical means of the weighing bagging apparatus of the present invention includes a device for measuring and cutting out an object to be packaged, sending it to a filling position, and supporting a plurality of types of packaging materials in a drum winding state. A storage device, a device for selectively pulling out the drum-wrapped packaging material and sending it to the filling position, a device for packing the packaged material with the packaging material at the filling position, and a device for supporting the lower end of the bag being filled, An automatic weighing bagging device comprising an operation control device signal-connected to each device, wherein the storage device has a plurality of supporting members attached to a circulatory movable chain, and each of the supporting members is wrapped by a drum. The material is loaded, and the chain is arranged in a substantially vertical direction, and the bag lower end supporting device has a receiving base and a moving device, and the receiving base is slidable in the vertical direction by the moving device, And multiple places In some that has to be able to selectively stop.

<Operation> In the weighing bagging apparatus of the present invention, various types of packaging materials wound on a drum are loaded on a support member provided on a chain of a storage device. By circulating the chain, the desired winding drum is guided to the feeding position.
From the winding drum selected in this way, the required amount of packaging resources is extracted and sent to the filling position.

On the other hand, the packaged object is weighed into a predetermined amount, cut out, and sent to the filling position. At the filling position, the sent object to be packed is packed and sealed by the packing material. During this filling, the lower end of the bag is supported by the pedestal. The position of the pedestal is moved and adjusted stepwise in the vertical direction as the size of the bag changes.

Further, each operation in each of the above devices is automatically performed by a command from the operation control device.

<Embodiment> A measuring bag filling device of the present invention will be described with reference to an embodiment of the drawings. 1 is a packaging material storage device, in which a tubular packaging material 2 such as a plastic film is wound and
At any time, a plurality of pieces are stored so that they can be fed out. Three
Is a chain that can be circulated freely, and is installed almost vertically as shown in the figure in order to minimize the installation space. A plurality of arms 4 are attached to the chain 3, and the drum of the packaging material 2 is rotatably fitted and supported on the arms 4. Therefore,
At the time of use, the chain 3 is moved to move the desired drum to the feeding position, thereby selecting the packaging material 2. The position of this drum is controlled by the control device described later.
It can be done automatically by the signal from 30. The end of the packaging material 2 unrolled from the drum is bitten by the feed roller 6 via several guide rollers 5.
As shown in FIG. 2, the feed roller 6 is composed of a pair of rubber rollers facing each other, and the packaging material 2 is sandwiched between the feed rollers 6 and fed out in accordance with the rotation amount of the feed rollers 6. Therefore, the feeding amount of the packaging material 2 can be adjusted by controlling the rotation amount of the feeding roller 6.
A drive device 7 for the feed roller 6 is composed of a servomotor, a speed reducer, and the like. A mark sensor 8 reads a position confirmation mark printed on the packaging material 2 with a photoelectric tube or the like and sends a signal to the roller driving device 7 to instruct positioning such as cutting. The packaging material 2 delivered from the feed roller 6 is in a state of being hung as it is due to its own weight. 10 is an end processing device for tubular packaging materials,
In the embodiment shown in the drawings, the system is composed of several component devices as follows. Reference numeral 11 denotes a bottom seal portion, which welds the lower end edge of the tube to form the bottom of the bag. 12 is a cutting blade that cuts a long tube into individual bag dimensions. Reference numeral 13 denotes a suction portion for forming an opening, which sucks air from a large number of holes formed in the wall surface to suck the upper edge wall of the bag to both sides and to open the upper surface of the bag. An upper edge seal portion 14 welds and seals the upper edge of the bag after the object to be packaged is put into the bag. The above-mentioned respective parts are provided so as to face both sides of the hanging packaging material 2, and the respective devices perform the above-mentioned respective works by appropriately joining and separating them.

A side edge holding device 15 is used in the embodiment as a device for supporting the bag in an open state. The side edge holding devices 15 are provided on both the left and right sides, and support the bag so as not to laterally shift when a packaged item is loaded. This side edge clamping device 15
The details of are shown in FIG. Reference numeral 16 is a clamp claw that can be opened and closed. The air cylinder 17 expands and contracts to swivel around a pin 18 as a fulcrum to sandwich the end of the bag. Packaging material 2
Since the width differs depending on the type, the positions of the side edge holding devices on both sides are moved according to the width. That is, the left and right side edge holding devices 15 are screwed to one screw rod 19. The screw directions of the left and right screw parts 20 of the screw rod 19 are reversed, the left screw part is the left screw, and the right screw part is the right screw. Further, the screw rod 19 can be rotated by the chain 21. Therefore, with this rotation, the left and right side edge holding devices 15 screwed to the screw rod 19 move along the axis of the screw rod. Further, since the screws are reversed in the left and right directions, the devices 15 on both sides move in opposite directions, and the distance between the two devices fluctuates freely. Therefore, the position of the side edge holding device 15 can be adjusted according to the width of the selected packaging material 2.

25 is a weighing hopper, 26 is a load cell type measuring device,
The objects to be packaged are put into the hopper 25 while weighing, and when a predetermined amount is reached, the feeding is stopped. After the quantitative measurement is finished, the lower end of the hopper 25 is opened and the object to be packaged is discharged into the filling cylinder 27. This packaged item flows down along the filling cylinder 27 and enters the bag from the lower end of the cylinder. In the embodiment, since the lower end position of the filling 27 and the cutting position of the packaging material are different, it is necessary to move the cut bag below the filling cylinder 27 and open the upper end of the bag. Therefore, the operation for this purpose will be described below. As described above, the packaging material 2 fed from the feed roller 6 is hung between the end portion processing devices 10 on both sides. When the packaging material is delivered by a predetermined length, the feed roller 10 stops, and thereafter, each part of the end portion processing device 10 on both sides moves in the joining direction. And the cutting blade 12
The packaging material 2 is cut by the bottom sealing part 11
As a result, the lower end edge of the hanging packaging material 2 is heat-welded. On the other hand, the upper end of the cut bag material is adsorbed by the suction part 13, and the suction part 13 returns to the separating direction to form an opening at the upper end of the bag material. However, at the time of joining the processing apparatus 10 at this time, welding by the upper end seal portion 14 is not performed. In addition, both edges of the cut bag material are clamped by
Backed by 15. Next, the end portion processing device 10 and the sandwiching device 15 move horizontally while keeping the bag open and supported,
The upper opening of the bag is carried to a position just below the outlet of the filling cylinder 27. Then, the article to be packed flowing down the filling cylinder 27 enters the opened bag. When this filling is completed, the suction part 13 and the upper end seal part 14 move jointly to close the upper end opening of the bag and to perform the welding and sealing. When the bag is vacuum-packed, before the upper edge of the bag is welded and sealed, a vacuum nozzle is inserted into the upper end opening to evacuate the air in the bag and bring it to a vacuum state (low pressure state). Make sure to seal on top. 28 is a cradle that supports the lower end of the bag when the articles are loaded. The pedestal 28 can be vertically moved and adjusted according to the size of the bag. 29 is a vertically moving device for the pedestal, and the pedestal 28 is slidably provided along a vertically extending guide rod,
A gear mounted on the pedestal 28 is engaged with the rack arranged in parallel with the guide rod, and the pedestal 28 can be moved in the vertical direction by rotating the gear by a motor. ing. Further, the stop position of the cradle 28 can be automatically positioned by selectively detecting a large number of detection pieces provided at appropriate intervals in the vertical direction with a proximity switch. An operation control device 30 includes a packaging material storage device 1, a feed roller driving device 7, a mark sensor 8, an end processing device 10, and a side edge clamping device 1.
5, the measuring device 26, the pedestal up-and-down moving device 29, etc. are connected, and the respective devices are automatically operated by a command signal from the operation control device 30.

Therefore, by inputting necessary items such as the packaging weight and the number of packaging materials and the type of packaging material to be used in the operation control device 30, the chain 3 moves in the packaging material storage device 1 and the selected packaging material drum is moved to the feeding position. To come. Next, packaging material 2
When the end of the sheet is sandwiched by the feed rollers 6 and a work progress instruction is given, the rollers 6 rotate by a predetermined amount, and the packaging material is delivered by the length of one bag. Then, the end processing device 10 welds or cuts the bottom of the bag, further opens the upper end of the bag, and sends the bag to the filling position. On the other hand, the object to be packaged is cut out by a measuring device by a predetermined amount. This packaged object is put into the bag through the filling cylinder 27. Finally, the upper opening of the bag is sealed and the bag packing operation is completed. And
By repeating this operation, bags are packed one after another.

In the present invention, the structure of each device is not limited to that of the illustrated embodiment, and any kind of device can be used as long as the same work can be achieved.

<Effects of the Invention> In the automatic weighing bagging apparatus of the present invention, according to various packaging modes such as the size of the packaging amount, the number of packages, and the type of package, selection of packaging material, quantitative cutout of the packaged item, and bag. A series of operations such as filling into the container can be automatically performed by the operation control device, and the packaging operation can be greatly streamlined.

Further, in the device of the present invention, since it is a system in which a plurality of packaging materials wound in a drum on a circulatingly movable chain are filled,
Even when the number of loaded drums is large and the diameter of the drum is large, space can be saved and the water can be efficiently stored. Moreover, since the chain is installed in a substantially vertical direction, a large number of drums can be stored in a small area.

Further, in the device of the present invention, the pedestal slides vertically and moves according to the size of the bag to adjust the position, so that the filling operation can be reliably performed regardless of the size of the bag.

[Brief description of drawings]

The drawings show an embodiment of an automatic weighing bag filling device according to the present invention.
FIG. 1 is a side view showing the entire apparatus, FIG. 2 is an enlarged side view of an end processing device, and FIG. 3 is an enlarged plan view of a side edge holding device. 1 ... Packaging material storage device, 2 ... Packaging material, 3 ... Chain, 6 ... Feed roller, 7 ... Feed roller driving device, 8 ... Mark sensor, 10 ... Edge processing device, 11
…… Bottom seal part, 12 …… Cutting blade, 13 …… Suction part, 14 ……
Upper edge seal part, 15 …… Side edge clamping device, 16 …… Clamp claw, 17 …… Air cylinder, 19 …… Screw rod, 20 …… Screw part, 25 …… Weighing hopper, 26 …… Measuring device, 27 …… Filling cylinder, 28 …… pedestal, 29 …… pedestal vertical movement device, 30 …… operation control device.

Claims (1)

[Claims] 1. A device for measuring and cutting out an object to be packaged and sending it to a filling position, a storage device for supporting a plurality of types of packaging materials in a drum winding state, and a filling position for selectively pulling out the drum winding packaging material. , A device for packing the packaged material with the packaging material at the filling position, a device for supporting the lower end of the bag being filled, and an operation control device signal-connected to each device. In the packing device, the storage device has a plurality of supporting members attached to a chain that can be circulated, and each supporting member is loaded with a packaging material wound one by one, and the chains are arranged in a substantially vertical direction. In addition, the bag lower end support device has a pedestal and a moving device, and the pedestal is slidable in the vertical direction by the moving device and can be selectively stopped at a plurality of positions. Packing device .