JPH0413209B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field The present invention relates to an automatic packaging machine for efficiently stacking small bags on a stacking plate and filling and packaging them into a plurality of bags into outer bags.

(b) Prior art and problems When packing powder or granular material, such as rice, into a resin bag or other bag, a predetermined amount, e.g.
Although the products are weighed to 10Kg or 20Kg and then filled and packaged, in some cases, it may be necessary to weigh these packaged products to a small amount, for example, 2Kg, and then fill and package them.

However, in terms of handling, the specified amount of 10Kg and 20Kg
It is more convenient for transportation and other reasons, so if you pack multiple small bags filled with a small amount in advance into a large outer bag, you can tear the outer bag and use one small bag as a product if necessary. Also, you can handle the total amount of products without tearing the outer bag, so for example, 10 bags of 2Kg or 4 bags of 5Kg can be handled as 20 bags.
Kg products are being made.

However, since the material costs and filling and packaging for sachets and outer bags are time consuming, in order to pack multiple sachets into outer bags as described above, an automatic packaging machine that can absorb some of the material cost and save time is required. The actual situation was that the necessary automatic packaging machines could not be found and the packaging was done by hand.

(c) Purpose The present invention has been made in view of this situation, and a stacking device that suctions and holds pouches from one side to the other and transfers the pouches thereto is provided with a means for aligning the width of the pouches that have been transferred. It is an object of the present invention to provide an automatic packaging machine that improves stacking efficiency and efficiently stacks a plurality of small bags and fills outer bags accordingly.

(d) Configuration In order to achieve the above object, the automatic packaging machine according to the present invention is an automatic packaging machine for packaging a predetermined number of small bags filled with granular materials such as rice grains or wheat grains into a large bag. a supply device that supplies small bags to be packaged one by one; a stacking device that receives the small bags one by one from the supply device and arranges a predetermined number of small bags in a predetermined large bag packing arrangement; and a large bag packing arrangement. The device is equipped with an extrusion device that pushes out a predetermined number of small bags that have reached the desired condition from above the stacking device and packs them into a large bag, and the stacking device also includes a suction device that picks up the small bags one by one from the supply device and transfers them. , a stacking plate for placing the small bags transferred by the suction device in a predetermined large bag arrangement, and width shifting means for aligning the small bags on the stacking plate, Furthermore, this width adjustment means includes side plates on both left and right sides that are arranged along each left and right side of the horizontally arranged stacking plate and standing upright with respect to the stacking plate; The extrusion device is configured to rotate the plate with the side along the side of the stacking plate serving as a fixed point, and the extrusion device moves a predetermined number of small bags on the stacking plate into a predetermined large bag. A pusher plate for pushing out and moving the pusher plate in the packed arrangement state, a pusher for moving the pusher plate in a space having a U-shaped cross section formed by the arrangement plate and left and right side plates, and a pusher plate for moving the pusher plate in a packed arrangement state. It is connected to the tip of the distribution plate so that a large bag can be freely attached to the large bag, and when a predetermined number of small bags pushed out by the pusher plate are placed on it, it tilts due to its weight, automatically filling the large bag with a predetermined number of small bags. The system is configured to include a computer and a computer to set the state.

(E) Embodiment The automatic packaging machine according to the present invention will be described in detail below with reference to an embodiment shown in the drawings.

This automatic packaging machine 1 has a stacking device 3.
and an extrusion device 4.

A supply device 2 is provided on the inlet side of the stacking device 3. This feeding device 2 introduces, aligns, and feeds the pouches 7 to a relatively short conveyor 6 arranged horizontally from the input side to the output side. That is, as the conveyor 6, a wide conveyor belt 6a and a narrow conveyor belt 6b, which are endless and have a relatively short conveyance distance, are rotatably arranged side by side, and an introduction device (not shown) is installed on the entrance side of the conveyor 6. It is connected.
In addition, the conveyor 6 is entirely replaced by a narrow conveyor belt 6.
It may be formed by b. An introduction/alignment position 12 is provided on the input side of the supply device 2, and a supply position 13 is provided on the output side. Both positions 12, 13 are provided.
There are sensors 14 and 15 each consisting of a photoelectric switch.
is attached so that its position can be freely adjusted in the front-rear direction (direction of arrow A), and detects the state of introduction and alignment of the pouches 7 and the state of supply. The positions of the sensors 14 and 15 are adjusted in advance in the front-rear direction depending on the size of the pouch 7, for example, 2 kg or 5 kg. Below the supply position 13 is the supply lift 1.
6 is provided, and a pressure cylinder 17 is driven in response to detection signals from the sensors 14 and 15 to lift the pouch 7 onto the conveyor 6. Specifically, the supply lift 16 is located between the narrow conveyor belts 6a, and is normally located below the pass line P of the conveyor belt 6a, and upon receiving the detection signal, moves the pouches 7 upward to a predetermined height. It supports and lifts the bottom surface. In addition, if the small bag 7 is not wrapped properly and is so-called "broken bag", the supply lift 1
6 descends, and the defective bag 7 is transferred to the conveyor 6.
It is designed so that it is sent to the front of the exit side and taken out.

The stacking device 3 is mainly formed of a suction device 19 and a mounting device 21.

The suction device 19 includes a suction cup 27 connected to a vacuum pump (not shown). The suction cup 27 has a rubber or other flexible skirt 2 on the bottom surface of the disk body 28.
9, and a suction needle 30 is provided inside the skirt 29.
and a suction port 31 are arranged. The skirt 29 is closely attached to the top surface of the pouch 7 to block the inside and outside, and the suction needle 30 penetrates the top surface of the pouch 7 and enters the inside of the pouch 7 to collect the deaerated contents of the pouch 7, such as hard rice grains. The suction port 31 is for deaerating the inside of the skirt 29 and suctioning the pouch 7.

In the illustrated example, two skirts 29 are provided on one suction cup 27, and four suction needles 30 and one suction port 31 are provided inside each skirt 29 to suction and hold one pouch 7. However, the present invention is not limited to this, and the suction device 19 can be freely replaced with another "suction cup" of a larger size in order to adjust the suction and holding capacity according to the planar size and weight of the pouch 7. In addition, the suction cup 27 itself is attached to multiple supports 32.
It is also possible to attach two small bags 7 to and hold them by suction at the same time. Furthermore, although not shown, a beating plate with a vibrator may be provided at a position where it does not interfere with the skirt 29 to flatten the upper surface of the pouch 7 prior to suction and holding.

Such a suction cup 27 is moved vertically (arrows Z ₁ , Z ₂ ), longitudinally (arrows X),
The pouch 7 is capable of horizontal movement (arrow Y) and horizontal rotation, and is lifted by the supply lift 16.
The materials are suctioned and held and sequentially transferred onto the arrangement plate 33 to be arranged in an arbitrary pattern.

The mounting device 21 is formed with a U-shaped overall vertical cross section by a stacking plate 33 and rotatable side plates 44 provided on both sides of the stacking plate 33, and the stacking plate 33 is approximately horizontal and The side plates 44 on both sides are combined in a vertical shape.
The entry side of the stacking plate 33 is a first setting position C that initially receives the pouch 7, and the exit side is the first setting position C that receives the pouch 7.
is set as the second setting position D to be accepted next.

A pair of left and right side plates 44 have an arm group 45 pinned to the outside, that is, a first arm 45.
a, the second arm 45b, the third arm 45c, and the pressure cylinder 46 form the "driving means" together with the "width adjusting means". Both the second and third arms 45b, 45c are integrated around a pivot point 47, and the tip of the third arm 45c [fourth,
The lower end in FIG. 5 is connected to a pressure cylinder 46. The connection state between the arm group 45 and the pressure cylinder 46 is approximately symmetrical with respect to the pair of left and right side plates 44. Then, both pressure cylinders 46 are operated to open and close the pouches 7 placed on the stacking plate 33 by opening and closing them in the directions of arrows B in FIGS. 3a and 5 about the pivot point 47. This is to perform width adjustment.

The extrusion device 4 includes a pusher 48 and a shooter 49.
The pusher 48 is moved in the longitudinal direction of the loading device 21 from the input side to the output side of the stacking plate 33 in order to take out a plurality of small bags 7 stacked. and a pusher plate 50 inserted into the side plates 44 on both sides, a guide shaft 51 disposed on the side of the mounting device 21, and a pressure cylinder (not shown) that moves the pusher plate 50 forward and backward. ) and is formed from. On the other hand, the shutter 49 is formed to have a U-shaped vertical cross section that is approximately the same as the shape formed by the stacking plate 33 and side plate 44 of the mounting device 21, and is located at the front end [i.e., the exit side] of the stacking plate 33 and side plate 44. ], and forms the same path line P as the arrangement plate 33, but it rotates under its own weight around the rotation fulcrum 53 and slopes downward. The shutter 49 is formed to protrude from the body (not shown) as shown in FIG. 1 so that it can be easily rotated and an exterior bag 58 shown in FIG. 3a can be easily placed on the outside thereof.

Next, the action will be explained.

First, if the pouches 7 are supplied onto the conveyor belts 6a and 6b as the conveyor 6 of the supply device 2, they are transferred to the supply position 1 via the introduction/alignment position 12.
3, the small bag 7 is sent to the sensor 14, 15.
detects the introduction/alignment state and supply state of the pouches 7, and the supply lift 16 is operated in accordance with this detection signal. That is, the pressure cylinder 17 is driven and the supply lift 16 is moved upward to lift the pouch 7 above the pass line P to an arbitrary height.

At this time, the suction cup 27 of the suction device 19 is located above the pouch 7 and is lowered (as indicated by the arrow) by a conveying device (not shown).
_Z1 ). Then, the skirt 29 comes into close contact with the top surface of the pouch 7, and at the same time, the suction needle 30 breaks through the top surface to evacuate the inside of the pouch 7, and at the same time, the suction port 31
This allows the inside of the skirt 29 to be evacuated. If the sachet 7 is damaged due to insufficient packaging,
An abnormal state in which the suction needle 30 sucks in air from the outside in addition to degassing the inside of the pouch 7 is instantaneously detected by a decompression sensor (not shown), and the operation of the suction device 19 is stopped and the supply lift 16 is stopped. is ordered to descend, and as the conveyor 6 descends, the small bags 7, which are defective products, are discharged from the exit side.

On the other hand, if there is no abnormality, the pouch 7 held by the suction cup 27 is transferred onto the arrangement plate 33 of the mounting device 21 via a transfer device (not shown).
That is, along with the forward and backward movement (arrow X) and the left and right movement (arrow Y), horizontal rotation is also performed in accordance with the arrangement pattern according to the type of pouch 7, and the pouch 7 is lowered again on the arrangement plate 33. (arrow Z ₂ ), and as soon as the pouch 7 is received at the first set position C of the distribution plate 33, the suction device 19 releases the suction holding state, searches for the next pouch 7, and moves it above the previous supply position 13. Move back to .

As shown in FIGS. 3a and 3b, when the pouch 7 is placed on the placement plate 33 at a position other than the first setting position C, the side plate 44 is rotated around the rotation fulcrum 47 by the pressure cylinder 46. The pouch 7a, which has been misaligned, is guided to an appropriate position by repeating opening and closing movements to align the width. In Figure 3a, the first
Small bag 7b placed at an appropriate position on setting position C
is then forcibly moved by the pusher 48 to the second setting position D in front by the space of the next pouch 7 for convenient stacking. "The pouch in this state" is indicated by the reference numeral 7c.

When the stacking is completed, the pusher 48 operates again, and the plurality of small bags 7 still stacked on the pusher plate 50 are moved together from the stacking plate 33 onto the shooter 49. In detail, the stacking pattern at this time is as shown in FIG. First, place one small bag 7 on the holder, then place another small bag 7 on top of it, and then press the pusher plate 5.
0 to the second setting position D, return the pusher plate 50, and stack the two small bags 7 on the first setting position C again to form four small bags 7, each weighing 5 kg. It will be moved up to 49. Also 20 2Kg sachets 7
Kg product, the third setting position C is
As shown in Figure b, stack 2 bags at the bottom, 1 bag in the middle, and 2 bags at the top, totaling 5 bags 7, and move them to the second setting position D using the pusher plate 50 as before. ,
After the pusher plate 50 is returned, five small bags 7 are stacked on the first setting position C again, and a total of ten small bags 7 are moved together onto the shooter 49 using the pusher plate 50.

At this time, the shooter 49 protruding forward from the fuselage (not shown) is manually covered with an outer bag 58 in advance, and the pouch 7 is moved onto the shooter 49 directly into the outer bag 58. When the pouches 7 are filled, at the same time, if the shooter 49 rotates around the rotation fulcrum 53 due to its own weight and tilts downward, the outer bag 58 will be released from the shooter 49 with the plurality of pouches 7 in the stacked state filled. It comes off and slides onto an inclined pedestal (not shown).

As the outer bag 58, a “glue-lined gusset bag” is used.
When using the outer bag 58, the opening can be manually glued on an inclined pedestal (not shown), and when a resin bag, for example, a polyethylene bag, is used as the outer bag 58, an appropriate heat sealing device (not shown) can be used. ) to seal the opening.

(f) Effects Since the automatic packaging machine according to the present invention has the contents as described above, it has the following effects.

(a) For width adjustment, we used a side plate that rotates with the side along the side of the stacking plate as a fixed point, so it is possible to fill the required number of small bags into a large bag. While the alignment condition, which may be somewhat rough, can satisfy the required width alignment accuracy at the minimum required level, it also simplifies the operability and structure, improves workability, and reduces manufacturing costs. Since the required space is small, it can be installed in a small space.

(b) Since a self-weight tilting type shooter connected to the tip of the stacking plate is used, there are fewer complicated mechanisms, making it compact and requiring only a small installation space, and reducing manufacturing costs. Furthermore, a predetermined number of small bags aligned by the width adjustment mechanism can be filled into a large bag at once while maintaining the large bag packing arrangement, resulting in excellent workability.

[Brief explanation of drawings]

Fig. 1 is a schematic perspective view showing the main parts of the automatic packaging machine, Fig. 2 is a partially cutaway side view of the suction cup, Fig. 3a is a schematic plan view of the mounting device and extrusion device, Fig. 3 b is a plan view of the mounting device showing another arrangement pattern;
FIG. 4 is a sectional view taken along the arrow line in FIG. 3a, and FIG. 5 is a sectional view equivalent to FIG. DESCRIPTION OF SYMBOLS 1... Automatic packaging machine, 3... Placing device, 4... Extrusion device, 7... Small bag, 16... Supply lift, 21... Placing device, 27... Suction cup, 33... Placing plate, 44...
Side plate, 45... Arm group, 46... Pressure cylinder, 49... Shooter, 50... Pusher plate, 58... Exterior bag, C... First setting position, D... Second
Setting position.

Claims (1)

[Scope of Claims] 1. An automatic packaging machine for packaging a predetermined number of small bags filled with granular material such as rice grains or wheat grains into a large bag, which supplies the small bags to be packed one by one. a feeding device; a arranging device for receiving the small bags one by one from the feeding device and arranging a predetermined number of the small bags in a predetermined large bag arrangement; and pushing out a predetermined number of small bags in the large bag arrangement from above the arranging device. In addition, the stacking device is equipped with a suction device that picks up and transfers the small bags one by one from the supply device, and packs the small bags transferred by the suction device into a predetermined large bag. It includes a stacking plate for placing the bags in an array, and width aligning means for aligning the pouches on the stacking plate, and the width aligning means further includes a stacking plate for placing the bags in an array. The left and right side plates are arranged along the left and right sides of the plate and stand up against the stacking plate, and the side of each side plate is placed along the side of the stacking plate. The extrusion device includes a pusher plate for pushing out and moving a predetermined number of small bags on the arrangement plate in a predetermined arrangement of large bags. , a pusher that moves this pusher plate in a space with a U-shaped cross section formed by the arrangement plate and left and right side plates, and a large bag that can be freely attached with it covered and connected to the tip of the arrangement plate. and a shutter that automatically fills the large bag with a predetermined number of small bags by tilting it by its weight when a predetermined number of small bags pushed out by a pusher plate are placed on the large bag. packaging machine.