JP2512375B2 - Packaging equipment for granules - Google Patents

Description

Detailed Description of the Invention

[0001]

The present invention uses two rolls of packaging material,
The present invention relates to a packing device for granules, etc., which automatically measures and packs granules, powders, etc.

[0002]

2. Description of the Related Art For example, a so-called four-sided seal type in which a drug consisting of granules, powders, etc. (hereinafter referred to as granules) is filled between two films of a thermoplastic resin and four sides thereof are heat-welded and sealed. The packaging method has been widely put into practical use recently.

FIG. 3 is a side view schematically showing a conventional packaging device of this type, and FIG. 4 is a front view thereof. In the figure, 1
Is a large hopper into which granules 40 are loaded, and a large number of concave grooves 4 are provided on the outer periphery of the outlet 2, and a cylindrical granulator 3 that is intermittently driven to rotate through gears 5 and 6 is provided. It is arranged. 7 is a small hopper provided at the exit of the hopper 1,
Reference numeral a is a level detector provided in the small hopper 7 for detecting the level of granules in the small hopper 7.

Reference numeral 8 is a table provided under the small hopper 7, and has filling holes 9a, 9b, ... 9n having a size corresponding to the capacity of the granules 40 to be packed at a predetermined interval.
Further, a rack 10 and a pinion 11 that meshes with the rack 10 are provided on the lower surface, and the table 8 is driven by the pinion 11 and slides in the directions of arrows a and b.

12n are sliding pieces, which are slidably mounted in grooves 8a, 8b, 8c provided in the table 8 so as to face the respective filling holes 9a to 9n, as shown in FIG.
14n (only 14a is shown in FIG. 3) is a sliding piece adjusting mechanism 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 attached to the frame 15, and a bevel gear 17 and the frame 15 fixed to the screw rod 16. The output gear is composed of a bevel gear 17 and a servomotor 18 meshing with the 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 is a handle attached to one end of the threaded rod 16 for manually rotating the threaded rod 16.

Reference numeral 20 denotes a shutter slidably arranged on the lower surface of the table 8, which is normally located below the filling holes 9a to 9n to close the shutter, but the table 8 slides to fill. When the holes 9a to 9n reach the collect chute, which will be described later, a stopper (not shown) stops at that position, and only the table 8 moves to open the filling holes 9a to 9n. Reference numeral 21 is a swing member, which is a shaft 22.
Granules 4 that are swung around and are filled in the filling holes 9a to 9n
The surface of 0 is leveled and made flat.

Reference numeral 23 is a collect chute disposed below the table 8, and an opening 24 is provided in the lower portion. A shutter 25 is attached to the shaft 26 and opens and closes the opening 24 of the collect chute 23. 27 is a chute disposed below the collect chute 23. 28
Reference numerals a and 28b denote heating rollers provided below the chute 27, and a plurality of concave portions 29a and 29b are provided on the outer peripheral portion, respectively.
Are formed, and they rotate in the directions of the arrows. 30a,
Reference numeral 30b is a heat-bondable film (hereinafter simply referred to as a film) such as a thermoplastic resin film or an aluminum foil.

Next, the operation of the packaging device configured as described above will be described. Granules 40 are loaded in the hopper 1, supplied to the concave groove 4 of the granulator 3, and intermittently rotated to be fed little by little to the small hopper 7. Now, for example, in FIG.
As shown in FIG. 5, when the table 8 is slid in the direction of the arrow a and the filling hole 9a is located below the small hopper 7, the granules 40 in the small hopper 7 fall and are filled in the filling hole 9a. Next, when the table 8 is slid in the direction of the arrow b, the surface of the granules 40 in the filling hole 9a is flattened by the swinging member 21 that tilts as shown in the figure, and the amount becomes a predetermined amount. When the level of the granules 40 in the small hopper 7 decreases, the level detector 7a detects this and sends a signal to a drive motor (not shown) for the gear 5 to rotate the granulator 3 to rotate the large hopper. The granules 40 in 1 are supplied to the small hopper 7.

Further, when the table 8 slides in the direction of the arrow b, the shutter 20 stops at that position, and only the table 8 continues to move. As a result, the lower part of the filling hole 9a is opened, and the granules 40 filled inside fall into the collect chute 23. Then, the shutter 25 is opened, and the granules 40 are guided by the chute 27 and heated by the heating roller 28.
It falls between the films 30a and 30b on a and 28b. The dropped granules 40 are accommodated between the films 30a and 30b in the recesses 29a and 29b of the heating rollers 28a and 28b, and the periphery thereof is heat-welded and sealed inside.
The product 31 is sent out from the opposite side.

When the amount of the granules 40 to be sealed between the films 30a and 30b is changed, the servomotor 18 of the sliding piece adjusting mechanism 14a is driven to drive the screw rod 16 via the bevel gear 17.
5 through the nut 13 screwed into the
By sliding the sliding pieces 12a to 12n to the right or left as shown in FIG. 5, 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 sliding pieces 12a to 12n.
May be slid individually.

[0011]

In the conventional packaging apparatus constructed as described above, the table 8 is constructed so as to be slidable from the lower end portion of the small hopper 7 with a slight gap therebetween, and When the filling holes 9a to 9n approach the collect chute 23, the shutter 20 stops at that position and only the table 8 slides along the shutter 20 to fill the filling holes 9a to 9n.
9n is opened to drop the granules 40 into the collect chute 23. Granule 4, as is well known
0 is usually coated on the surface, but when the table 8 slides in the feeding process, between the lower end of the metal small hopper 7 and the table 8 and between the table 8 and the shutter 20. The surface of the granules 40 was rubbed to cause peeling or cracking of the coating, and the supplied granules 40 and the packaged granules 40 sometimes had different particle size distributions.

Therefore, it is conceivable to reduce the gap between the small hopper 7 and the shutter 20 and the table 8, but in this case, the granules 40 are pushed into the gaps to form a layer and the table 8 slides smoothly. The problem arises that it will stop working. Further, since the table 8 has to slide until the stopper 20 completely opens the filling holes 9a to 9n, there is a problem that the stroke becomes long.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a packaging device for granules or the like, in which the coating of the granules is not peeled off and the granules are not cracked.

[0014]

A packing apparatus for granules or the like according to the present invention fills a plurality of filling holes provided in a table with granules or the like loaded in a hopper and moves the table to move the filling holes. In a packaging device for accommodating granules and the like dropped from two films between two films, and adhering and sealing the periphery thereof, a holder provided with a plurality of through holes at predetermined intervals,
Bushings each having a supply path for granules and the like and held in the through holes of the holder, and springs vertically movable between the bushes and the holder are urged so that their lower ends are the table. A slide bush that abuts against the table, and is provided between the hopper and the table at a right angle to the moving direction of the table, and on the lower surface of the table integrally provided with the table, and the filling hole is provided. An opening / closing means for opening / closing each and a driving means for opening / closing the opening / closing means at a predetermined position are provided.

Further, in the above packaging apparatus, a pressure reducing plate having a substantially inverted V-shaped cross section is provided in the hopper for reducing the pressure of the granules and the like loaded in the hopper.

[0016]

When the filling holes provided in the table are closed by the opening / closing means and the hopper is filled with the granules, the granules are filled into the filling holes from the supply passage. When the table is moved, the granules in the filling hole are flattened and quantified at the tip of the slide bush. When the table is further moved and the filling hole reaches the vicinity of the collect chute, the opening / closing means is opened by the driving means, and the granules in the filling hole are thrown into the collect chute and dropped between the two films on the heating roller. .
The dropped granules are accommodated between the films in the concave portion of the heating roller, and the periphery thereof is heat-welded and sealed.

When granules are put into the collect chute, the table moves in the opposite direction, the driving means actuates the opening / closing means to close the filling hole again, and the above-mentioned operation is repeated thereafter. In the present invention as described above, the lower end of the slide bush is constantly urged by the spring to contact the upper surface of the table, and the opening / closing means for the filling hole does not slide along the table as in the conventional case. Therefore, the coating of the granules does not peel or crack, and the granules do not penetrate into these gaps.

Further, since the pressure reducing plate is provided in the hopper, the pressure of the charged granules or the like is reduced, so that the filling hole can always be filled with a fixed amount of granules or the like.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view schematically showing a part of an embodiment of the present invention with a part thereof omitted. The same parts as those of the conventional example shown in FIGS. 3 and 6 are designated by the same reference numerals, and the description thereof will be omitted. In the figure, reference numeral 31 denotes a hopper having a substrate 32 and a substantially V-shaped cross section with an opening 33 provided in the lower portion thereof, which is arranged orthogonal to the moving direction of the table 8. 34 is hopper 3
1 is a pressure reducing plate having a substantially V-shaped cross section for reducing the pressure of the loaded granules.

Reference numeral 35 denotes a granule feeder arranged between the hopper 31 and the table 8 at right angles to the moving direction of the table 8. In the supply device 35, 36 is a holder in which through holes 37 having a cylindrical shape and a T-shaped cross section are provided at predetermined intervals, and the lower end portion of the through holes 37 is reduced in diameter to form a stopper 3.
8 are formed. A cylindrical bush 39 having a substantially T-shaped cross section is mounted in the through hole 37 of the holder 36, and a granule supply passage 40 is provided at the center thereof.

Reference numeral 41 is made of a material having chemical resistance and a low friction coefficient, such as Teflon (registered trademark), and is a cylindrical slide bush disposed vertically slidably between the holder 36 and the bush 39. Therefore, the spring 43 provided between the spring receiver 42 and the bush 39 provided below is constantly urged downward. The lower position of the slide bush 41 is regulated by a stopper 38 provided on the holder 36.

Reference numeral 44 denotes a rotary shaft rotatably supported by a bearing (not shown) provided on the lower surface of the table 8, and reference numeral 45 denotes a plate-like member fixed to the rotary shaft 44 below the filling holes 9a. , 46 are arms integrally formed with the damper 44, and a spring 47 is interposed between the arm 45 and the main body of the apparatus, and the damper 45 is always brought into close contact with the lower surface of the filling holes 9a, .... Is urged to. Four
Reference numeral 8 is a stopper provided on the main body of the apparatus.

Next, the operation of the present invention configured as described above will be described. In the illustrated state, the damper 45 is urged by the spring 47 to be pressed against the lower surface of the table 8 to close the filling hole 9a, and the opening 33 of the hopper 31, the supply path 40 for each granule and each filling hole 9a. , ... are located on the same line. At this time, the lower end of the slide bush 41 is in contact with the surface of the table 8 at the peripheral edges of the filling holes 9a ,.

When the hopper 31 is loaded with granules, the pressure due to the weight of the granules is reduced by the pressure reducing plate 34, and the supply passages 40 and the filling holes 9a, ... Are filled with granules having a low pressing force. Now, when the pinion 11 is driven to move the table 8 in the direction of arrow a, the damper 45 also moves to the filling hole 9a,
Move with the table 8 in a closed state. At this time, along with the movement of the table 8, the slide bush 41 that contacts the upper surface of the table 8 flattens the surface of the granules filled in the filling holes 9a, ...

When the table 8 further moves and the filling hole 9a reaches the vicinity of the collect chute 23, the arm 42 contacts the stopper 48 as shown in FIG.
The damper 45 rotates in the clockwise direction with the movement of, and the lower part of the filling hole 9a is opened. As a result, the granules in the filling hole 9a are discharged into the collect chute 23 along the upper surface of the damper 45, and thereafter, the granules are packaged in the same manner as the conventional one.

After discharging the granules, the pinion 11 rotates in the opposite direction to move the table 8 in the direction of arrow b.
As a result, the arm 46 is separated from the stopper 48, so that the damper 45 is rotated counterclockwise by the spring 47 to close the filling hole 9a again. When the filling hole 9a reaches below the supply path 40, the table 8 is stopped and the granules are filled.

In the above description, the case of packaging granules according to the present invention has been described, but the present invention can also be implemented when packaging powder. In this case, as in the conventional case, there is no risk that the powder will invade between the hopper and the table and between the table and the shutter to form a layer, and the movement of the table will not become unsmooth. You can Further, although the case where the damper 45 is opened and closed by the stopper 48 is shown, the damper 45 may be opened and closed by an electric mechanism, a hydraulic mechanism or the like instead of the stopper.

[0028]

As described in detail above, the packaging apparatus for granules and the like according to the present invention is provided with a feeding means provided with a slide bush whose tip portion is always in contact with the table at the periphery of the filling hole, and a table on the lower surface of the table. Since the opening / closing means which is integrally provided with the opening / closing means for opening / closing the filling hole and the driving means for opening / closing the opening / closing means at a predetermined position are provided, the following effects can be obtained. (1) Since the coating of the granules is not peeled off or the granules are cracked by the table and the supplying means and the opening / closing means, there is no difference in the particle size distribution between the supplied granules and the packed granules. It is possible to obtain a highly reliable packaging device.

(2) Further, since granules and the like do not invade between the table and the supplying means and the opening / closing means to form a layer, the table can always be smoothly moved. (3) Since the rotating damper is used to open and close the filling hole for granules and the like, unlike the conventional sliding shutter, the stroke of the table can be shortened, and the working efficiency of the packaging device is improved. Can be improved.

Further, in the above packaging apparatus, since the pressure reducing plate for reducing the pressure of the loaded granules or the like is provided in the hopper, there is no risk of the granules or the like being pushed into the filling hole.
It is possible to improve the quantification of the packed granules and the like.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention schematically showing with a part omitted.

FIG. 2 is an explanatory view of the operation of the present invention.

FIG. 3 is a side view of a conventional packaging device.

FIG. 4 is a front view of FIG. 3;

FIG. 5 is a plan view of a main part of FIG.

FIG. 6 is an explanatory view of the operation of FIG.

[Explanation of symbols]

 8 table 9a to 9n filling hole 10 rack 11 pinion 23 collect chute 31 hopper 34 pressure reducing plate 35 supply device 36 holder 39 bush 40 supply path 41 slide bush 43 spring 44 rotary shaft 45 damper 46 arm 47 spring 48 stopper

Claims (2)

(57) [Claims] 1. Granules and the like loaded in a hopper are filled in a plurality of filling holes provided in a table, and the table is moved to accommodate the granules and the like dropped from the filling hole between two films. In a packaging device for adhering and sealing the periphery thereof, a holder provided with a plurality of through holes at predetermined intervals, bushes each having a supply path for granules and the like and respectively held in the through holes of the holder, and A slide bush is provided between the bush and the holder so as to be movable up and down, and the lower end portion of the slide bush is in contact with the table and is urged by a spring. Supplying means arranged orthogonally to each other, opening / closing means provided integrally with the table on the lower surface of the table for opening / closing the filling holes, and opening / closing the opening / closing means at a predetermined position. A packaging device for granules or the like, characterized in that it is provided with a driving means. 2. The packaging of granules and the like according to claim 1, wherein a pressure reducing plate having a substantially inverted V-shaped cross section is provided in the hopper to reduce the pressure of the granules and the like charged in the hopper. apparatus.