JP2754464B2 - Packaging method and device for granules etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention uses two volumes of packaging material,
The present invention relates to a method and an apparatus for packaging granules and the like for automatically weighing and packaging granules and powders.

[0002]

2. Description of the Related Art For example, a so-called four-sided seal type in which a drug consisting of granules, powders, and the like (hereinafter, referred to as granules) is accommodated between two rolls of a film made of a thermoplastic resin, and the four sides are thermally welded and sealed. Has recently been widely put to practical use.

FIG. 4 is a side view schematically showing a conventional packaging apparatus of this type, and FIG. 5 is a front view thereof. In the figure, 1
Is a large hopper into which granules 35 are charged. The outlet 2 of the large hopper is provided with a large number of concave grooves 4 on its outer periphery. It is arranged. 7 is a small hopper provided at the outlet of the hopper 1;
a is a level detector that is provided in the small hopper 7 and detects the level of granules in the small hopper 7.

Reference numeral 8 denotes a table provided below the small hopper 7, which is provided with filling holes 9a, 9b,... 9n of a size corresponding to the quantity of granules 35 to be packed at predetermined intervals.
A rack 10 and a pinion 11 meshing with the rack 10 are provided on the lower surface, and the table 8 is driven by the pinion 11 to move in the directions of arrows a and b.

.. 12n are sliding pieces slidably mounted in grooves 8a, 8b, 8c provided in the table 8 opposite to the filling holes 9a to 9n as shown in FIG.
Reference numerals 4a, 14b,..., 14n (only 14a is shown in FIG. 4) are sliding piece adjusting mechanisms provided for each of the sliding pieces 12a to 12n. The sliding piece adjusting mechanism 14a is mounted on a frame 15 fixed to the table 8, a screw rod 16 rotatably mounted on the frame 15, a bevel gear 17 fixed on the screw rod 16, and the frame 15. The output gear is composed of a servomotor 18 meshing with a bevel gear 17, and the screw rod 16 is screwed into a nut 13 provided at one end of the sliding piece 12a. Reference numeral 19 denotes a handle attached to one end of the screw rod 16 for manually rotating the screw rod 16.

Reference numeral 20 denotes a shutter slidably disposed on the lower surface of the table 8. The shutter 20 is normally located below the filling holes 9a to 9n and is closed. When the collecting chutes 9a to 9n reach the below-mentioned collect chutes, the stoppers (not shown) stop at that position, and only the table 8 moves to open the filling holes 9a to 9n. Reference numeral 21 denotes a swing member, and a shaft 22
And the granules 3 filled in the filling holes 9a to 9n.
5 is leveled and flattened.

Reference numeral 23 denotes a collect chute arranged below the table 8, and an opening 24 is provided at a lower portion. Reference numeral 25 denotes a shutter attached to a shaft 26, which opens and closes an opening 24 of the collect chute 23. Reference numeral 27 denotes a chute disposed below the collect chute 23. 28
Reference numerals a and 28b denote heating rollers provided below the chute 27. A plurality of recesses 29a and 29b
Are formed and rotate with each other in the direction of the arrow. 30a,
Reference numeral 30b denotes a heat-bondable film (hereinafter simply referred to as a film) such as a thermoplastic resin film or an aluminum foil.

[0008] Next, the operation of the packaging apparatus configured as described above will be described. Granules 35 are charged into the hopper 1 and supplied to the concave grooves 4 of the granulator 3, intermittently rotated and fed into the small hopper 7 little by little. Now, for example, FIG.
As shown in (5), when the table 8 is moved in the direction of the arrow a and the filling hole 9a is located below the small hopper 7, the granules 35 in the small hopper 7 fall and are filled in the filling hole 9a. Next, when the table 8 is moved in the direction of the arrow b, the surfaces of the granules 35 in the filling holes 9a are leveled by the swinging member 21 that is tilted as shown in the figure, and the predetermined amount is obtained. When the level of the granules 35 in the small hopper 7 decreases, the level detector 7a detects this and sends a signal to a drive motor (not shown) of the gear 5 to rotate the granulator 3 to rotate the large hopper. 1 is supplied to the small hopper 7.

Further, when the table 8 moves in the direction of arrow b, the shutter 20 stops at that position, and only the table 8 continues to move. As a result, the lower portion of the filling hole 9a is opened, and the granules 35 filled therein fall into the collect chute 23. Next, the shutter 25 is opened, and the granules 35 are guided by the chute 27 and
a, 28b falls between the films 30a, 30b. The dropped granules 35 are accommodated between the films 30a and 30b in the concave portions 29a and 29b of the heating rollers 28a and 28b, and the periphery thereof is heat-sealed and sealed therein.
It is sent out as a product 31 from the opposite side.

To change the amount of the granules 35 to be sealed between the films 30a and 30b, the servo motor 18 of the slide piece adjusting mechanism 14a is driven, and the screw rod 16 is rotated via the bevel gear 17.
6 through a nut 13 screwed into the
If the sliding pieces 12a to 12n are slid right or left as shown in FIG. 7, the volume of the filling holes 9a to 9n formed by the table 8 and the sliding pieces 12a to 12n can be set to a desired value. it can. The volume of the filling holes 9a to 9n can be changed by manually rotating the handle 19 and moving the sliding pieces 12a to 12n.
May be individually slid.

[0011]

In the above-mentioned four-side seal type packaging apparatus, static electricity is generated at the beginning of the operation of the apparatus, and a potential difference is generated between the apparatus and the granules 35 in the small hopper 7, so that the potential difference is generated. Therefore, a bridging phenomenon occurs in the granules 35 in the small hopper 7, and a fixed amount of the granules 35 may not be supplied even when the filling holes 9a to 9n come under the small hopper 7. Further, when the table 8 moves, the granules 35 spilled from the small hopper 7 enter between the small hopper 7 and the swing member 21 (see FIG. 2), and this is caused by static electricity. In some cases, the granules 35 are not easily dropped because they adhere to or become layered, and the surface of the granules 35 is rubbed by the movement of the table 8 to easily cause peeling or cracking of the coating.

For this reason, conventionally, the whole apparatus is operated idle for about 30 minutes before the start of the work, and the apparatus and the granules 35 are balanced to have substantially the same potential, and then the packing work is started. Was. For this reason, not only a large amount of power is consumed for the idle operation of the apparatus, but also the film is wasted and the cost is increased.

[0013] For example, spherical and fluid granules are
When the filling holes 9a to 9n pass between the small hopper 7 and the swing member 21, the granules spilled therebetween fill the filling holes 9a to 9n.
n, and further below the small hopper 7, the granules are supplied and the filling holes 9a to 9n are filled with a substantially fixed amount of granules. However, for example, in the case of granules having poor fluidity such as rods, even if the filling holes 9a to 9n pass between the small hopper 7 and the swinging member 21, the granules spilled therebetween fill the filling holes 9a to 9n. It is difficult to drop, and even if it reaches below the small hopper 7, it may not be supplied sufficiently and may not reach a fixed amount. Further, the granules accumulated between the small hopper 7 and the swinging member 21 are stratified, or the coating is peeled or cracked and deformed by the movement of the table 8, so that the removing operation is troublesome. .

The present invention has been made in order to solve the above-mentioned problems, and is configured so that the stroke of the table can be changed according to the type of granules to be packed. By passing twice between a hopper and a swing member and under a small hopper twice, it is possible to obtain a highly reliable packing method and apparatus for granules and the like which can reliably fill a fixed amount of granules in a filling hole. It is intended. In addition, the present invention saves energy by moving only the table during idle operation before starting work,
An object of the present invention is to obtain a packaging device for granules and the like that can save resources and reduce costs.

[0015]

According to the method for packing granules and the like according to the present invention, when the granules and the like have good flowability, the filling hole is positioned once under the hopper during one cycle to fill the granules and the like. If the granules have poor fluidity, the filling hole is positioned below the hopper twice during one cycle, and the granules and the like are filled each time. Further, the packaging apparatus of the granules or the like according to the present invention includes a driving source, a rotating member coupled to a drive source, one end is a rod the other end is connected is coupled to the table to the rotating member, granules, etc. If liquidity is poor,
I will place the filling hole twice under the hopper during the cycle
As described above, the apparatus is provided with table driving means capable of changing the stroke of the table by controlling the rotation range of the rotation member.

[0016]

When packing granules having good fluidity, such as spherical granules, the range of rotation of the rotating member of the table driving means is reduced and the stroke of the table is set to a normal length. Thereby, the granules are filled when the filling hole provided in the table is located under the hopper, and the table is moved to drop the granules in the filling hole when the filling hole is located on the collect chute. It is housed between films, sealed on all sides, and packed.

When packing granules having poor fluidity such as bar-shaped granules, the stroke of the table is lengthened by enlarging the turning range of the turning member. After the filling hole is located below the hopper and the granules are filled,
Then move the table in the same direction (away from the collect chute), then move it in the opposite direction, place the filling hole under the hopper again to fill the granules, and then move the table further in the same direction. The filling hole is positioned on the collect chute, and the granules are dropped and packed.

Further, when the idle operation is performed to balance the static electricity before the start of the work, only the table is moved by the driving source of the table driving means, and the potential of the granules is almost equal to that of the table, the small hopper, etc., and the static electricity is balanced. Let it.

[0019]

【Example】

Embodiment 1 FIG. 1 is a schematic diagram of a first embodiment of the present invention. The same parts as those in the conventional example shown in FIG. 4 are denoted by the same reference numerals, and description thereof will be omitted. 40 is a driving device for the table 8,
Drive source such as pulse motor or servo motor (not shown)
For example, a disk-shaped rotating member 42 is attached to the output shaft 41, and rotates in the directions of arrows c and d. Reference numeral 43 denotes a rod whose length is adjustable. One end is rotatably connected to the vicinity of the outer peripheral edge of the rotating member 42, and the other end is connected to a driving member 8 a provided on the table 8 via a universal joint 45. . The other end of the rod 43 may be directly connected to the table 8 via the universal joint 45.

In this embodiment configured as described above,
When the turning member 42 is turned around the output shaft 41 by the drive source, the table 8 is moved in parallel in the directions of arrows a and b via the rod 43 connected thereto, and the filling holes 9a to 9n are moved through the arrows a. , B direction, the granules 35 in the hopper 1 are accommodated between the films 30a and 30b and packaged as in the case of the conventional example.

As described above, the fluidity differs depending on the type of granules to be packed (for example, spherical and rod-shaped granules). For example, spherical granules have small filling holes 9a to 9n. When it is located below the hopper 7, a fixed amount of granules are automatically filled. However, when the external shape is, for example, a rod shape, the fluidity is poor even if the filling holes 9a to 9n are located below the small hopper 7, May not be filled.

[0022] Therefore, in this embodiment, as shown in FIG. 2, in the case of flowable good granules, the stroke of the table 8 to set the range of rotation of the rotating member 42 so that the L _1, flow for sex bad granules, as fill hole 9a~9n passes twice under the small hopper 7, the stroke of the table 8 by changing the rotation range of the rotating member 42 so as to set L ₂ It was done.

Therefore, when packing a granule having good fluidity, for example, spherical granules, the table 8 is moved in the direction of arrow b when the connecting portion 44 between the rotating member 42 and the dropper 43 is at 44a in FIG. The filling holes 9a to 9n are located on the collect chute 23, and when the connecting portion 44 reaches 44a, the rotating member 42 rotates in the direction of arrow c, and the table 8 moves in the direction of arrow a, and 44b. When the point is reached, the filling hole 9a ~
9n is located under the L ₁ moves to the small hopper 7, granules in the small hopper 7 is filled with pauses at this position.
Then, the rotating member 42 is again rotated in the direction of arrow d to move the table 8 in the direction of arrow b, and the connecting portion 44 is
Is reached, the granules are dropped into the collect chute 23 and stored between the films 30a and 30b for packaging.
As described above, in the case of granules having good fluidity, the rotating member 42 is rotated in the range of 44a and 44b, and the filling holes 9a to 9n are positioned once under the small hopper 7 once during one cycle. And packing.

On the other hand, poor fluidity, for example, when packaging a rod-shaped granules, which sets the pivoting member 42 44a, the stroke of the table 8 is rotated in the range of 44c to L _2. Thereby, when the connecting portion is at 44a, the filling holes 9a to 9n are located on the collect chute 23 and the granules are dropped into the collect chute 23, and then the rotating member 42 is rotated in the direction of arrow c. When the connecting portion 44 reaches 44b, the filling holes 9a to 9n are located below the small hopper 7, and the granules in the small hopper 7 are filled. When the rotating member 42 further rotates in the direction of arrow c, the table 8 continues to move in the direction of arrow a, and stops once when the connecting portion 44 reaches 44c. It is located on the driving device 40 side (left side in FIG. 1) (see FIG. 2).

From this state, the rotating member 42 rotates in the direction of arrow d to move the table 8 in the direction of arrow b.
When 4 reaches 44b, the filling holes 9a to 9n are
Located below. Then, the granules are filled again, and the table 8 continues to move in the direction of the arrow b. Let it fall. Thus, in the case of granules having poor fluidity, the filling holes 9a to 9n are placed under the small hopper 7 in one cycle.
And the granules are filled each time. The filling hole 9
Since a to 9n are filled twice with the granules, the granules may be filled more than a certain amount. In the case of granules having poor flowability, the above cycle is repeated and packaged.

In the idle operation for balancing static electricity performed before the start of work, the table driving device 40
Only the table 8 is operated to reciprocate only the table 8 and the other mechanisms are stopped, so that the power consumption is small and the films 30a and 30b are not wasted.

Embodiment 2 FIG. 3 is a schematic view of a second embodiment of the present invention. The parts having the same functions as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Reference numeral 46 denotes a granule supply device disposed between the hopper 1 and the table 8 at right angles to the moving direction of the table 8. In the supply device 46, a holder 47 is provided with a through hole 48 having a cylindrical shape and a T-shaped cross section at a predetermined interval. The lower end of the through hole 48 is reduced in diameter to form a stopper 49. Reference numeral 50 denotes a bush having a T-shaped cross section having a supply hole 51 for granules, and is mounted in the through hole 48 of the holder 46. Reference numeral 52 denotes a support member having a cylindrical shape and a concave cross section. The lower surface of the support member is held in a cylindrical frame 56 by abutting on a holder 47.
Are provided, and the small hopper 7 is fitted in the recess.

Numeral 54 denotes a cylindrical slide bush made of a material having chemical resistance and a low coefficient of friction such as Teflon (registered trademark) and slidably disposed vertically between the holder 47 and the bush 50. Thus, it is constantly urged downward by a spring 55 interposed between a spring receiver provided below and the bush 50. The slide bush 54
Is restricted by a stopper 49 provided on the holder 47, and the lower end portion is in contact with the surface of the table 8.

Reference numeral 57 denotes a rotary shaft rotatably supported by a bearing (not shown) provided on the lower surface of the table 8, and 58 denotes a plate-like portion fixed to the rotary shaft 57 below each of the filling holes 9a to 9n. Are always pressed against the lower surface of the table 8 to close the filling holes 9a to 9n.

In this embodiment configured as described above,
For example, when setting the stroke of the table 8 to L ₁ is a rotating member 44 44a, is rotated in a range of 44b,
When the table driving device 40 is driven to move the table 8 in the direction of the arrow b, the damper 58 also moves together with the table 8 with the filling holes 9a to 9n closed. At this time,
As the table 8 moves, the slide bush 54 abutting on the upper surface of the table 8 flattens and quantifies the surfaces of the granules filled in the filling holes 9a to 9n.

The table 8 further moves to fill holes 9a to 9a.
When 9n reaches the vicinity of the collect chute 23, the rotating shaft 5
7 rotates to rotate the damper 58 clockwise to open the lower portions of the filling holes 9 a to 9 n to drop the granules into the collect chute 23. The setting of the stroke of the table 8 according to the type of the granules and the operation associated therewith are the same as those in the first embodiment.

According to the present embodiment, there is no possibility that granules or the like enter between the table 8 and the supply device 46, so that the coating of the granules does not peel or crack.
In addition, the infiltrating granules are not stratified and the movement of the table is not made smooth.

In the above description, the case where the rotating member 42 of the table driving device 40 is formed in a disk shape is shown, but it may be constituted by a substantially semicircular member, or the output shaft of the driving source may be formed. The 41 and the rod 43 may be connected by an arm. Also, the case where the rod 43 is connected to the table 8 or the driving member 8a of the table 8 via the universal joint 45 has been described,
You may connect via another mechanism.

[0034]

As is apparent from the above description, the method for packaging granules and the like according to the present invention is such that the filling hole is positioned once under the hopper during one cycle when the granules and the like have good fluidity. The filling hole is filled with granules and the like. If the granules and the like have poor fluidity, the filling hole is positioned twice under the hopper during one cycle so that the filling hole is filled with the granules and the like each time. In addition, any type of granules can be always packaged in a fixed amount, and a highly reliable packaging method for granules and the like can be realized.

The packaging device for granules and the like according to the present invention comprises:
A driving source, a rotating member connected to the driving source, and a rod having one end connected to the rotating member and the other end connected to the table; The table is provided with a table driving means capable of changing the stroke, so that the stroke of the table can be changed according to the type of granules to be packed. Was passed twice below. For this reason, it is possible to always pack a fixed amount of any kind of granules and the like, and it is possible to obtain a highly reliable packing apparatus for granules and the like.

In addition, since the table driving device is provided with an independent driving source, the static electricity can be balanced by moving only the table during the idle operation before the start of the work, so that not only the power consumption is reduced but also the film consumption is reduced. Waste can be prevented, whereby energy saving and resource saving can be achieved, and costs can be reduced. Further, the present invention can be applied to a conventional packaging apparatus without major modification.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a main part of a first embodiment of the present invention.

FIG. 2 is an operation explanatory view of FIG. 1;

FIG. 3 is a schematic diagram showing a main part of a second embodiment of the present invention.

FIG. 4 is a schematic side view showing a main part of a conventional packaging device for granules and the like.

FIG. 5 is a schematic front view of FIG. 4;

FIG. 6 is a plan view of a main part of FIG. 4;

FIG. 7 is an operation explanatory view of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hopper 8 Table 7 Small hopper 9a-9n Filling hole 23 Collect chute 30a, 30b Film 35 Granule 40 Table driving device 42 Rotating member 43 Rod 44 Connecting part 45 Universal joint 46 Feeding device

Claims (2)

(57) [Claims] 1. A granule or the like charged in a hopper is filled in a plurality of filling holes provided in a table, and the table is moved to accommodate granules and the like dropped from the filling hole between two films. In a method of packaging granules or the like which adheres and seals the periphery thereof, when the granules or the like have good fluidity, the filling hole is positioned once under a hopper during one cycle, and the granules are filled in the filling hole. And the like. When the granules and the like have poor flowability, the granules are characterized by positioning the filling hole twice under a hopper during one cycle and filling the filling holes each time with the granules and the like. Etc. packaging method. 2. A granule or the like charged in a hopper is filled into a plurality of filling holes provided in a table, and the table is moved to accommodate granules and the like dropped from the filling hole between two films. A packaging device, such as a granule, for adhering and sealing the periphery thereof, comprising a driving source, a rotating member connected to the driving source, one end connected to the rotating member, and the other end connected to the table. If the granules and the like have poor fluidity,
Position the filling hole under the hopper twice between cycles
So that the packaging apparatus of the granules or the like, characterized by comprising a table drive means so as to capable of changing the stroke of the table by controlling the rotation range of the rotating member.