JP2005091104A - Weighing apparatus for solid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily measure the mean weight of solids at optional timing and to quickly feed back to processing equipment while restricting generation of waste and improving in a yield ratio, and to simply execute maintenance of the device. <P>SOLUTION: A transportation pass (4) for transporting the solids (9) is provided with a weighing container (5), and the solids (9) stored in the weighing container (5) are weighed in the weighing means (6). A throttle means (7) is provided at the upstream part (4a) of the transportation pass, and the throttle means (7) is switched into an opening posture (Y) for approving the transportation of the solids, and a stopping posture (X) for stopping the transportation of the solids. The weighing container (5) is switched into a receiving posture (C) for receiving the solids (9), and into a discharging posture (D) for discharging the solids to the downstream part (4b). The solids (9) from the upstream part (4a) of the transportation pass are made to be able to flow into the weighing container (5) over both the postures (C, D). <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a measuring device that measures the average weight of a solid material such as a tablet, and more specifically, it is possible to improve the yield by suppressing generation of waste due to the weight measurement of the solid material, and to determine the average weight of the solid material at an arbitrary timing. The present invention relates to a solids weighing device that can easily measure and quickly feed back to a solids processing apparatus and can easily perform maintenance.

  For example, in the tableting process for producing tablets, the weight of the tablet that is compressed is affected by fluctuations in the flowability and specific volume of the tableting powder, changes in temperature and humidity, and thermal expansion of the punch and die of the tableting equipment.・ It may fluctuate due to various factors such as shrinkage. Therefore, usually, a predetermined amount of tablets tableted every predetermined time is sampled, the number of the sampled tablets is counted and the weight is measured to calculate an average weight per tablet, and the weight data of this tablet is obtained. Feedback on the tableting control device is performed to reset tableting conditions, thereby correcting variations in tablet weight.

  Conventionally, as the above tablet weighing device, for example, there is one disclosed in Patent Document 1 (hereinafter referred to as Prior Art 1). That is, in this prior art 1, referring to the block diagram of FIG. 10, the rotation provided above the conveyor means (53) for conveying tablets from the tableting step (51) to the next step (52) and the like. Take-out means (54) comprising a wheel, weighing container (55) for receiving tablets dropped and discharged from the take-out means (54), and counting the number of tablets in the process of dropping and discharging from the take-out means (54) Counting means (56), weighing means (57) for measuring the weight of the tablet in the measuring container (55), and sucking and discharging the tablet in the measuring container (55) to the exclusion container (58) Discharging means (59), and the take-out means (54) adsorbs the tablets one by one in the pocket provided in the rotating wheel, and adsorbs with the rotation of the rotating wheel. The tablet is configured to drop and discharge.

Moreover, as a sample container for the sampled solid matter, for example, there is one disclosed in Patent Document 2 (hereinafter referred to as Prior Art 2). That is, in this prior art 2, the measuring container is formed in a bottomed cylindrical shape, and a solid material inlet / outlet is opened at the tip. The measuring container is supported so that the intermediate portion in the length direction is swingable around the rotation support portion, and by receiving the solid object in the measurement container by swinging around the rotation support portion, It is switched to a discharge posture for discharging solid matter in the measuring container.
In the above-described receiving posture, the above-described entrance / exit faces the entrance provided in the transport path for transporting the solid matter. Then, after a predetermined amount of solid matter is stored in the measuring container, the measuring container is switched to the discharging posture. In this discharging posture, the inlet / outlet faces the container for storing the sample.

In the above prior art 1, since the tablet sampled and weighed from the tablet conveyance path is discharged to the exclusion container and discarded, if it is sampled frequently, the number of discarded items increases and the yield decreases. For this reason, the number of times of sampling cannot be increased so much that the weight cannot be measured for all tablets.
In order to count the tablets, it is usually necessary to separate the tablets individually, so that it takes a long time to sample each time, and the feedback of the results is delayed. For this reason, when the tablet weight exceeds the allowable range due to fluctuations in tableting conditions, the number of defective products manufactured during that period is increased by the amount of feedback, and there is a problem that the production efficiency is lowered.

On the other hand, the above-described conventional technique 2 is excellent in that the solid matter contained in the container can be easily discharged simply by changing the posture of the measuring container, and the discharging means of the conventional technique 1 is not required. There are the following problems.
(1) The entrance / exit provided at the tip of the container deviates from the position facing the inlet provided in the transport path when the measuring container is switched from the receiving position to the discharging position. For this reason, if a solid substance is sent out from the input port in this deviated state, the solid substance is not received by the measuring container but scattered around the measuring device such as the measuring container and the weighing means. And, if the solid matter is scattered on the weighing means, there is a problem that the weight of the solid matter in the measuring container cannot be accurately measured, the surroundings of the measuring container must be frequently cleaned, and the maintenance becomes complicated There is also.
(2) The above-mentioned measuring container is firmly supported by the supporting means, and when washing the measuring container at the time of product type change, etc., it is necessary to remove the supporting means together, so there is a problem that the cleaning process is not easy. .

JP 61-128126 A No. 5-11491

  The present invention solves the above-mentioned problems, can suppress the generation of waste due to the weight measurement of the solid matter, improve the yield, and easily measure the average weight of the solid matter at an arbitrary timing to process the solid matter It is a technical object to provide a solids weighing device that can be quickly fed back to the device and can be easily maintained.

In order to solve the above-described problems, the present invention is described as follows, for example, based on FIG. 1 to FIG. 9 showing an embodiment of the present invention.
That is, the present invention relates to a solids weighing device, and relates to a weighing container (5) provided in a conveyance path (4) for conveying a solid (9), and a solid contained in the weighing container (5). Weighing means (6) for measuring the weight of the object (9), and damming means (7, 7a, 7b) provided in the upstream portion (4a) on the upstream side of the above-mentioned weighing container (5) The damming means (7, 7a, 7b) includes an open posture (Y) that allows the solid material (9) to be conveyed, and a damming posture (Y) that stops the solid material (9). X), and the weighing container (5) includes a receiving posture (C) for receiving the solid material (9) charged into the weighing container (5), and a weighing container (5). It is possible to switch to a discharge posture (D) for discharging the solid matter (9) in the container to the downstream portion (4b) on the downstream side of the measuring container (5), and both postures (CD) Inflow of solid matter (9) from the upstream part (4a) Characterized by being configured to volume.

  The present invention 2 also relates to a solids weighing device, wherein a branching means (33) is provided in a transport path (4) for transporting a solid (9), and a plurality of downstream means are provided on the downstream side of the branching means (33). A branch conveyance path (34) is provided in parallel with each other, and the above-mentioned branch means (33) sends any one of the branch conveyance paths to the solid (9) conveyed from the upstream side of the branch means (33). (34) is provided, and at least one branch conveyance path (34) is provided with a measuring container (5), and the weight of the solid matter (9) accommodated in the measuring container (5) is measured. The weighing container (5) includes a receiving posture (C) for receiving the solid material (9) charged in the weighing container (5), and a weighing container (5). The solid material (9) can be switched to a discharge posture (D) for discharging the solid material (9) to the downstream portion (36) of the branch conveyance path downstream of the measuring container (5).

  The present invention 3 relates to a solids weighing device, and after measuring the weight of the solids (9) charged from the charging port (16) provided in the conveyance path (4), the solids (9) are discharged into the discharge path ( 19) A measuring device for the solid matter discharged to the discharge port (18) provided in 19), the weighing container (5) capable of containing the solid matter (9), and the solid matter contained in this measuring vessel (5) The weighing means (6) for measuring the weight of (9), the supporting means (10) for supporting the weighing container (5) on the weighing means (6), and the posture of the weighing container (5) A posture changing means (23) for changing, and the measuring container (5) includes a container inlet (25) for receiving the solid material (9) charged from the charging port (16), and a solid material (9 ) From the discharge port (18) to the discharge passage (19), and the weighing container (5) is solidified by the posture changing means (23). Receiving form to receive object (9) in measuring container (5) It is possible to switch between (C) and a discharge posture (D) for discharging the solid matter (9) from the measuring container (5), and the above-mentioned receiving posture (C) and discharge posture (D) are covered. The inlet (16) faces the container (5) from the container inlet (25) into the metering container (5), and in the discharge posture (D), the container outlet (26) is connected to the outlet. It is characterized by making it face in said discharge path (19) from an exit (18).

  The present invention 4 relates to a solids weighing device, and after measuring the weight of the solids (9) charged from the charging port (16) provided in the conveying path (4), the solids (9) are discharged into the discharge path ( 19) A measuring device for the solid matter discharged to the discharge port (18) provided in 19), the weighing container (5) capable of containing the solid matter (9), and the solid matter contained in this measuring vessel (5) The weighing means (6) for measuring the weight of (9), the supporting means (10) for supporting the weighing container (5) on the weighing means (6), and the posture of the weighing container (5) A posture changing means (23) for changing, and the measuring container (5) includes a container inlet (25) for receiving the solid material (9) charged from the charging port (16), and a solid material (9 ) From the discharge port (18) to the discharge passage (19), and the weighing container (5) is solidified by the posture changing means (23). Receiving form to receive object (9) in measuring container (5) (C) and a discharge posture (D) for discharging the solid matter (9) from the measuring container (5), and in the above-described receiving posture (C), the input port (16) is configured as described above. The container inlet (25) is exposed to the measuring container (5), and in the discharge posture (D), the container outlet (26) is connected to the discharge passage (19) from the discharge port (18). ), And the weighing container (5) is detachably supported by the support means (10).

In the present invention 1 described above, the solid is weighed as follows.
When the damming means is switched to the open position and the weighing container is switched to the discharge position, the solid material passes through the damming means and the weighing container in order and is conveyed downstream in the conveyance path. The
When measuring the weight of the solid material, the damming means is first switched to the damming posture, and after the inflow of the solid material into the weighing container is stopped, the weighing container is switched to the receiving posture. Next, after the damming means is switched to the open posture for a predetermined time, it is switched to the damming posture again. While the damming means is switched to the open posture, the solid material conveyed in the conveying path flows into the measuring container, and the weight thereof is measured by the weighing means. When the measurement of the weight is completed, the weighing container is switched to the discharge posture, and the damming means is switched to the open posture. Thereby, the solid matter in the measuring container is guided to the downstream portion of the conveyance path together with the solid matter that has been dammed by the damming means.

  Note that two damming means may be provided. In this case, both damming means are respectively switched to the damming posture, and a substantially constant amount of solid matter is accommodated between the two damming means. After the container is switched to the receiving position, only the downstream damming means is switched to the open position. Then, after the weighing by the weighing means is completed, the weighing container is switched to the discharge posture, and the upstream side damming means is switched to the open posture.

In the present invention 2 described above, the solid is weighed as follows.
While the weight of the solid substance is not measured by the weighing device arranged in the specific branch conveyance path, the solid substance is guided to the other branch conveyance path by the branching unit.
When measuring the weight of solid matter with the above-mentioned weighing device, first, the weighing container is first switched to the receiving posture, and then the solid matter is guided to the branch conveyance path by the branching means. At this point, the branching means guides the solid matter to another branch conveyance path. When the inflow of the solid material into the measuring container is stopped, the weight of the solid material is measured by the weighing means, and then the measuring container is switched to the discharge posture. Thereby, the solid matter in the measuring container is discharged to the downstream portion of the branch conveyance path. In addition, you may comprise this downstream part by connecting with the conveyance container to a next process, respectively, and receiving the discharged | emitted solid substance. Alternatively, the downstream portion may be joined with another branch conveyance path. In this case, the solid matter discharged from the weighing container is combined with the solid substance guided by the other branch conveyance path, and the next process or the like. It is conveyed to.

The present invention 3 operates as follows.
When weighing the solid material, the weighing container is switched to the receiving posture. In this state, the solid material sent out from the above-mentioned inlet flows into the measuring container from the container inlet and is received. After the weight of the solid in the measuring container is measured by the weighing means, the measuring container is switched to the discharge posture. Thereby, the solid substance in the measuring container is discharged from the container outlet to the discharge port of the discharge path.
Here, even if solids are sent out from the inlet when the measuring container is in the discharge posture, the inlet is always exposed to the measuring container from the inlet of the container. The solid material is introduced into the measuring container through the container inlet. Since the measuring container is in the discharging posture, the solid matter is discharged from the container outlet to the outlet as it is.

  Here, the container outlet is formed at the front end of the weighing container, the rotation support portion provided on the side portion of the measurement container is rotatably supported by the support means, and the posture changing means is used. The rear end portion of the weighing container can be moved up and down to switch between the discharge posture and the receiving posture, and the rotation support portion can be provided near the front end of the side portion of the weighing container. In this case, there is little change in the container outlet when switching the posture of the measuring container, and the solid matter discharged from the container outlet can be easily received by the discharge port regardless of the posture of the measuring container. Since it can comprise so that it may guide to a discharge path, it is more preferable.

Further, the weighing container includes a pair of circular or partial circular side walls centered around the rotation support portion and a bottom formed between the side walls, and the container inlet and the container outlet are disposed between the side walls. And the support means can be configured to rotatably support the measurement container via the rotation support part. In this case, since the side wall shape of the measuring container is circular and the container inlet is formed in the peripheral surface portion, the container inlet can be easily connected to the inlet through the receiving posture and the discharging posture. This is more preferable.
In the third aspect of the present invention, the container inlet and the container outlet may be formed at different positions, or may be shared by the same opening.

The present invention 4 operates as follows.
When the inside of the measuring container is to be cleaned, such as when changing the type of solid matter, the above supporting means is left on the weighing means, and only the measuring container is removed from the supporting means and cleaned. If this cleaning process takes time, a new clean weighing container may be attached to the support means during this time.

  The weighing container (5) includes a mounting portion (28) and a solid matter storage portion (27) that is detachably mounted on the mounting portion (28). The rotation support portion is provided on the mounting portion, and the rotation support portion is provided. The mounting portion may be configured to be rotatably supported by the support means. In this case, it is only necessary to remove and clean the solid material storage part of the measuring container, and members having complicated shapes and structures such as the rotation support part do not need to be cleaned, so that maintenance can be easily performed.

  Since the present invention is configured and operates as described above, the following effects can be obtained.

  (1) In the present invention 1 and the present invention 2, the weighing container is provided in the conveyance path or the branch conveyance path, and the measured solid matter is conveyed to the next step without being discarded. The generation of waste due to weighing can be reduced, and a branching path for sampling is unnecessary, and the weighing process can be inlined.

  (2) Since the solid matter is not discarded after the measurement, the number of times of measurement can be increased without causing waste due to the measurement, and the measurement result can be quickly fed back to the solid material processing apparatus by shortening the measurement interval. As a result, the solid matter processing apparatus and the like can be stably controlled, and the production efficiency can be increased by reducing the occurrence of defective products.

  (3) In particular, in the second aspect of the present invention, the average weight of all solid materials guided in the transport path is measured by increasing the number of branch transport paths and placing a weighing device in each branch transport path. It is also possible to feed back the measurement results more quickly.

  (4) In the third aspect of the present invention, since the charging port faces the measuring container from the container inlet over the receiving position and the discharging position of the measuring container, the receiving position is temporarily assumed. Even if solids are sent out from the inlet in a state other than the above, the solids are prevented from flowing into the measuring container from the container inlet and spilling out of the measuring container. As a result, it is possible to prevent the occurrence of measurement errors due to the fall of the solid matter on the weighing means, and the maintenance work can be simplified because the frequency of cleaning around the weighing device can be reduced.

  (5) When changing the type of solid material, it is necessary to clean the part of the weighing device that comes into contact with the solid material by washing or the like. What is necessary is just to wash | clean etc., and a maintenance operation can be simplified.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 5 show a first embodiment of the present invention applied to a tablet manufacturing process, FIG. 1 is a block diagram of a tablet weighing device, FIG. 2 is a side view of the weighing device, and FIG. 3 is a sectional view of a weighing container. FIG. 4 is a partially broken perspective view of the weighing device in the discharging posture, and FIG. 5 is an exploded perspective view of the weighing container.

First, a schematic configuration of the weighing device will be described with reference to FIG.
As shown in FIG. 1, the weighing device (1) is provided in the middle of a conveyance path (4) for conveying tablets from the tableting device (2) to a conveyance container (3) for the next process. That is, the weighing device (1) includes a weighing container (5) provided in the conveyance path (4), and weighing means (6) for measuring the weight of the tablet accommodated in the weighing container (5). And damming means (7) provided in the upstream portion (4a) of the transport path upstream of the weighing container (5). The tablet whose weight is measured by the weighing device (1) is transported to the transport container (3) through the transport path downstream portion (4b).
In the present invention, the transport path may transport the tablet to a place other than the transport container, for example, in the next step.

Next, a specific structure of the weighing device will be described.
As shown in FIG. 2, the weighing means (6) includes a supporting means (10) comprising a weighing part (8) provided on the upper surface and a first supporting part (11) and a second supporting part (12). The weighing container (5) is supported by the support means (10). In other words, the first support portion (11) on the front side rotatably supports the rotation support portion (13) attached to the front side of the side portion of the weighing container (5), and the second support portion on the rear side. The support portion (12) supports the rear bottom surface of the weighing container (5) from below.

On the upper surface of the weighing means (6), a protective case (14) is placed so as to surround the weighing part (8) and the supporting means (10) and weighing container (5) arranged above the weighing part (8). The interior covered with the protective case (14) is shielded from the outside so that dust and the like do not enter.
The upper wall (15) of the protective case (14) is formed so that the conveyance path upstream portion (4a) penetrates, and the inlet (16) is formed at the lower end of the upstream portion (4a). Is provided. Further, the front wall (17) of the protective case (14) is provided with a discharge port (18), and the downstream portion (4b) of the transport path is connected to the discharge port (18). (4b) constitutes a discharge path (19) for guiding the tablet after weighing.

The right side wall (20) of the protective case (14) is provided with posture changing means (23) comprising a motor (21) and a rotating arm (22), and the tip of the rotating arm (22) The weighing container (5) is configured so as to be able to contact and separate from the rear end.
The weighing container (5) has a receiving posture (C) in which the rear end portion is supported by the second support portion (12), and the rear end portion is lifted by the distal end portion of the rotating arm (22). , The discharge posture (D) shown in the phantom line in FIG. 1 is switched.

The damming means (7) includes an open posture (Y) that allows the conveyance of the tablet (9) and a damming posture (X) that stops the conveyance of the tablet (9) as indicated by the phantom line in FIG. ) And can be switched.
This damming means (7) and the motor (21) are electrically connected to the control device (24), and the attitude (X, Y) of the damming means (7) and the attitude of the measuring container (5) (C · D) is controlled by this control device (24). The weighing means (6) and the tableting device (2) are also electrically connected to the control device (24), and the measurement result of the weighing means (7) is obtained by the control device (24). It is judged and fed back to the tableting device (2).

As shown in FIG. 3, the weighing container (5) has an opening from the upper surface to the front surface, the upper surface opening being the container inlet (25), and the front opening being the container outlet (26). It is composed.
The charging port (16) faces from the container inlet (25) into the measuring container (5) from the receiving position (C) to the discharging position (D). The tablet (9) delivered from 16) flows into the weighing container (5) in any posture (C / D). On the other hand, as shown in FIG. 2, the container outlet (26) is configured to face the discharge channel (19) from the discharge port (18) in the discharge posture (D). .

Next, a procedure for measuring the weight of the tablet using the above weighing device will be described.
The tablet (9) tableted by the tableting device (2) is transported by the transport path (4). When measuring the average weight of the tablet (9), the damming means (7) is first switched to the damming posture (X), and the tablet (9) is not sent out from the inlet (16). In this state, the weighing container (5) is switched to the receiving posture (C), and the weighing means (6) is zero-adjusted in this state.

  Next, the damming means (7) is switched to the open posture (Y), and is switched to the damming posture (X) again after a certain period of time. As shown in FIG. 3, the tablet (9) that has passed through the damming means (7) during this period is sent out from the charging port (16) and is fed into the measuring container (5) from the container inlet (25). It is thrown in and received. The total weight (W) of the tablet (9) is measured by the weighing means (6).

A counter is provided between the damming means (7) and the measuring container (5) to measure the number of tablets (9) that have passed, and the number of tablets (9) counted by the counter is used to determine the number of tablets (9). The average weight of the tablet (9) may be calculated by dividing the total weight.
However, the weight of the tablet (9) is usually controlled in a range where the upper limit value (s + a) and the lower limit value (s−a) are narrow with respect to one standard weight (s). When the number (n) of tablets stored in the measuring container (5) can be determined from the relationship between the width (± a) and the total weight (W), the counter can be omitted. That is, the following formula W / (s + a) ≦ n ≦ W / (sa)
When there is only one integer n satisfying the above, it is determined that there are n tablets (9) accommodated in the weighing container (5).

  The average weight (W / n) of the tablet (9) is calculated by the above weight measurement, and when it is necessary to change the tableting conditions of the tableting device (2) based on this value, A control signal for changing the condition is fed back from the control device (24) to the tableting device (2).

When the weight measurement is completed, as shown in FIG. 4, the rear end of the weighing container (5) is lifted by the posture changing means (23), and the weighing container (5) is discharged (D). Can be switched to. Thereby, the tablet (9) in the measuring container (5) is discharged from the container outlet (26) to the discharge passage (19) through the discharge port (18). The measuring container (5) is formed in a bowl shape having a U-shaped cross section when viewed from the front, and the tablet (9) in the measuring container (5) is smoothly discharged.
As the posture of the weighing container (5) is changed, the damming means (7) is also switched to the open posture (Y), and the tablet (9) tableted by the tableting device (2) (4a), the inlet (16), the measuring container (5), the outlet (18), and the downstream part (4b) of the conveying path which is the discharging path (19) to the conveying container (3) in this order Be transported.

  As shown in FIG. 5, the weighing container (5) includes a solid material container (27) and a mounting part (28). The solid material storage part (27) is fixedly supported by the mounting part (28) in a detachable manner via the locking means (29). The rotation support portion (13) is formed on the side of the mounting portion (28), and the rotation support portion (13) is connected to the first support portion (11) of the support means (10). It is supported movably.

  When cleaning the weighing device (1), such as when changing the type of tablet, the part in contact with the tablet, that is, the measuring container (5) is removed from the support means (10), replaced, and washed. The In particular, since the solid container (27) can be removed from the mounting part (28), only the solid container (27) may be replaced and washed in this measuring container (5). Since the rotation support part (13) is not formed on the part (27), it can be easily cleaned, so that maintenance work can be performed very easily.

6 and 7 show a second embodiment of the present invention, FIG. 6 is a cross-sectional view of a weighing device, and FIG. 7 is a perspective view of a weighing container in a discharge posture.
As shown in FIG. 6, the weighing device (1) includes a weighing means (6), a supporting means (10) placed on the weighing section (8), as in the first embodiment. A measuring container (5) supported by the supporting means (10).
As shown in FIGS. 6 and 7, the weighing container (5) includes a pair of substantially semicircular side walls (30) centered around the rotation support portion (13) formed on the side portion, and the side walls (30 And a bottom portion (31) having a U-shaped cross section formed between (30), and is rotatably supported by the support means (10) via the rotation support portion (13).
In the second embodiment, the side wall (30) of the weighing container is formed in a substantially semicircular shape. However, in the present invention, this side wall may be formed in a circular shape or other partial circular shape such as a sector shape.

A container inlet (25) and a container outlet (26) are formed in a series of openings on the peripheral side between the side walls (30) of the weighing container (5), and the upstream portion (4a) of the transport path is formed. The input port (16) faces the measuring container (5) from the container inlet (25).
The inlet (16) is slightly separated from the container inlet (25) so as not to contact the measuring container (5) in the receiving position (C). If there is no fear of contact with 5), the input port (16) may be plunged into the measuring container (5) from the container inlet (25).
Since other configurations are the same as those of the first embodiment, description thereof is omitted.

  As shown in FIG. 6, the weighing container (5) is switched to the rearwardly lowered receiving posture (C), and the tablet (9) sent out from the insertion port (16) of the upstream portion (4a) of the transport path. Is put into the weighing container (5) and received. When the rotary arm (22) of the posture changing means (23) is separated, the weighing container (5) is switched to the receiving posture (C) due to the weight of the rear wall (32). A weight may be attached to the rear part of the weighing container (5) so as to be surely switched.

When the rotating arm (22) of the posture changing means (23) is rotated and the rear part of the weighing container (5) is pushed up at the tip, the measuring container (5) is discharged as shown in FIG. The tablet (9) in the weighing container (5) is discharged from the discharge port (18) to the discharge path (19) which is the downstream part (4b) of the transport path.
In both the second embodiment and the first embodiment, the container inlet (25) and the container outlet (26) are formed by a series of openings. However, in the present invention, the container inlet (25) and the container outlet (26) may be formed by separate openings separated from each other.

FIG. 8 is a block diagram of a tablet weighing device showing a modification of the present invention.
In the first embodiment, one damming means (7) is provided in the upstream portion of the conveyance path. However, in this modified example, two damming means (7a, 7b) are provided in the upstream portion (4a) of the conveyance path. ) Is provided.
In this modification, when receiving the tablet in the weighing container (5), first, both the damming means (7a, 7b) are switched to the damming position, respectively, so that both the damming means (7a, 7b) A substantially constant amount of tablets is contained in the container. Note that the switching of the two damming means (7a, 7b) to the damming posture is set according to the tablet conveyance speed or the like, and may be simultaneous, or a time difference may be provided.

  Next, after the weighing container (5) is switched to the receiving posture, only the downstream damming means (7b) is switched to the open posture. Thereby, the tablet accommodated between both damming means (7a, 7b) is put into the measuring container (5). Then, after the weighing by the weighing means (6) is completed, the measuring container (5) is switched to the discharge posture, and the upstream damming means (7a) is switched to the open posture. Thereby, the tablet compressed by the tableting device (2) passes through the transport path upstream portion (4a), the weighing container (5), and the transport path downstream portion (4b) in this order, and then into the transport container (3). Be transported.

FIG. 9 is a block diagram of a tablet weighing device showing a third embodiment of the present invention.
In the third embodiment, a branching means (33) is provided in the transport path (4) from the tableting device (2), and a plurality of branch transport paths (34) are connected to each other downstream of the branching means (33). Provided in parallel, the branch means (33) guides the tablets transported from the upstream side to any one of the branch transport paths (34).

Each branch conveyance path (34) is provided with a weighing container (5), and the weight of the tablet accommodated in the weighing container (5) is measured by the weighing means (6). It is. Each weighing container (5) has a receiving posture for receiving the tablet from the upstream portion (35) of the branch conveyance path and a discharge posture for discharging the tablet in the weighing container (5) to the downstream portion (36) of the branch conveyance path. It is comprised so that switching is possible, and the same measurement container as said 1st Embodiment or 2nd Embodiment can be used.
Each of the branch conveyance path downstream portions (36) is joined to each other, and is configured to guide the tablet into the conveyance container (3) for the next process via the conveyance path downstream portion (4b).

  When measuring the weight of the tablet with the weighing device (1), the weighing container (5) of the specific branch conveyance path (34) is first switched to the receiving position, and then the tablet is moved by the branching means (33). Is guided to the branch conveyance path (34). When the guided tablet reaches a predetermined amount, the branching means (33) is switched to guide the tablet to the other branch conveyance path (34). When the inflow of the tablet into the weighing container (5) is stopped, the weight of the tablet is measured by the weighing means (6), and then the weighing container (5) is switched to the discharge posture to drop the tablet into the downstream part of the branch conveyance path ( It is discharged to 36) and put together with the tablets guided in the other branch conveyance path (34).

In the present invention, the weighing containers may be provided only in some of the branch conveyance paths. However, if the measurement containers (5) are provided in the respective branch conveyance paths (34) as in the third embodiment, By switching the branching means (33) appropriately, the average weight can be measured for all tablets delivered from the tableting device (2).
In the third embodiment, the downstream part of the branch transport path (36) is joined with the other branch transport path (34). However, in the present invention, each downstream part of the branch transport path may be connected to the transport container. .

  In each of the above embodiments, the weighing device is installed in the in-line state on the conveyance path. However, the weighing device of the present invention can also be provided in this sampling path by forming a sampling path in the transport path, for example. In this case, as in the prior art described above, the solid matter in the measuring container is measured and then discharged from the discharge path to the exclusion container or the like.

  The present invention is suitable for other tablet processing apparatuses such as a tablet coating apparatus in addition to weighing tablets compressed by a tableting apparatus. However, it goes without saying that the present invention can also be applied to the measurement of various solid substances such as pharmaceuticals other than tablets such as capsules, foods, ceramics products, metal products, and packages containing fluids.

1 is a block diagram of a tablet weighing apparatus showing a first embodiment in which the present invention is applied to a tablet manufacturing process. It is a side view of a measuring device of a 1st embodiment. It is sectional drawing of the measurement container of 1st Embodiment. It is a partially broken perspective view of the measuring device of the discharge posture of the first embodiment. It is a disassembled perspective view of the measurement container of 1st Embodiment. It is sectional drawing of the measuring device which shows 2nd Embodiment of this invention. It is a partially broken perspective view of the discharge container of a discharge posture of a 2nd embodiment. It is a figure equivalent to FIG. 1 which shows the modification of this invention. FIG. 3 is a view corresponding to FIG. 1 and showing a third embodiment of the present invention. FIG. 2 is a view corresponding to FIG.

Explanation of symbols

1 ... Weighing device 4 ... Conveying path
4a… Upstream part of the transport path
4b: downstream part of the conveying path 5 ... weighing container 6 ... weighing means 7, 7a, 7b ... damming means 9 ... solid matter (tablet)
10 ... Support means
13 ... Rotation support
16 ... Inlet
18 ... Discharge port
19 ... Discharge path
23… Attitude change means
25 ... Container entrance
26 ... Container outlet
27… Solids container
28… Mounting part
30 ... Side wall of weighing container (5)
31 ... Bottom of weighing container (5)
33 ... Branching means
34 ... Branch conveyance path
36 ... Downstream part of the conveyance path C ... Receiving posture D ... Discharging posture X ... Damping posture Y ... Opening posture

Claims (7)

A weighing container (5) provided in the conveyance path (4) for conveying the solid matter (9), and a weighing means for measuring the weight of the solid matter (9) accommodated in the weighing container (5) ( 6) and damming means (7, 7a, 7b) provided in the upstream portion (4a) of the transport path upstream of the weighing container (5),
The damming means (7, 7a, 7b) includes an open posture (Y) that allows the conveyance of the solid matter (9) and a damming posture (X) that stops the conveyance of the solid matter (9). Can be switched to
The weighing container (5) measures the receiving posture (C) for receiving the solid material (9) charged in the measuring container (5) and the solid material (9) in the measuring container (5). It is configured to be switchable to a discharge posture (D) for discharging to the downstream portion (4b) of the transport path downstream from the container (5), and at the upstream portion (4a) of the transport path over both postures (CD) A solids weighing device, characterized in that the solids (9) are allowed to flow from the solids. A branching means (33) is provided in the transporting path (4) for transporting the solid (9), and a plurality of branching transporting paths (34) are provided in parallel to each other downstream of the branching means (33),
The branching means (33) is configured to guide the solid matter (9) transported from the upstream side of the branching means (33) to any one branch transporting path (34),
A weighing container (5) is provided in at least one branch conveyance path (34), and a weighing means (6) for measuring the weight of the solid (9) accommodated in the weighing container (5) is provided.
The weighing container (5) measures the receiving posture (C) for receiving the solid material (9) charged in the measuring container (5) and the solid material (9) in the measuring container (5). A solids weighing device characterized in that it can be switched to a discharge posture (D) for discharging to a downstream part (36) of the branch conveyance path downstream of the container (5). After measuring the weight of the solid material (9) charged from the charging port (16) provided in the conveying path (4), the solid material (9) is transferred to the discharging port (18) provided in the discharging channel (19). A measuring device for solid matter to be discharged,
A weighing container (5) capable of accommodating the solid matter (9), a weighing means (6) for measuring the weight of the solid substance (9) accommodated in the weighing container (5), and on the weighing means (6); And a supporting means (10) for supporting the weighing container (5) and a posture changing means (23) for changing the posture of the weighing container (5),
The weighing container (5) includes a container inlet (25) for receiving the solid material (9) charged from the charging port (16), and the solid material (9) from the discharge port (18) to the above-described level. A container outlet (26) for discharging to the discharge channel (19),
Further, the measuring container (5) is provided with a receiving posture (C) for receiving the solid material (9) in the measuring container (5) by the posture changing means (23) and the solid material (9). (5) can be switched to the discharge posture (D) to discharge,
The charging port (16) is allowed to face the measuring container (5) from the container inlet (25) over the receiving position (C) and the discharging position (D), and In the discharge posture (D), the container outlet (26) is allowed to face the discharge passage (19) from the discharge port (18), and the solids weighing device is characterized by the above. The container outlet (26) is formed at the front end of the weighing container (5),
A rotation support portion (13) provided on the side of the weighing container (5) is rotatably supported by the support means (10),
The posture changing means (23) is configured to be able to switch between the discharge posture (D) and the receiving posture (C) by raising and lowering the rear end of the weighing container (5),
The solids weighing device according to claim 3, wherein the rotation support portion (13) is provided at a position near the front end of the side portion of the weighing container (5). The weighing container (5) includes a pair of circular or partial circular side walls (30) centering around the rotation support part (13) and a bottom part (31) formed between the side walls (30, 30). Prepared,
The container inlet (25) and the container outlet (26) are formed on the peripheral side of the weighing container (5) between the side walls (30, 30),
4. The solid material measuring device according to claim 3, wherein the support means (10) rotatably supports the weighing container (5) via the rotation support portion (13). After measuring the weight of the solid material (9) charged from the charging port (16) provided in the conveying path (4), the solid material (9) is transferred to the discharging port (18) provided in the discharging channel (19). A measuring device for solid matter to be discharged,
A weighing container (5) capable of accommodating the solid matter (9), a weighing means (6) for measuring the weight of the solid substance (9) accommodated in the weighing container (5), and on the weighing means (6); And a supporting means (10) for supporting the weighing container (5) and a posture changing means (23) for changing the posture of the weighing container (5),
The weighing container (5) includes a container inlet (25) for receiving the solid material (9) charged from the charging port (16), and the solid material (9) from the discharge port (18) to the above-described level. A container outlet (26) for discharging to the discharge channel (19),
Further, the measuring container (5) is provided with a receiving posture (C) for receiving the solid material (9) in the measuring container (5) by the posture changing means (23) and the solid material (9). (5) can be switched to the discharge posture (D) to discharge,
In the receiving position (C), the input port (16) is allowed to face the measuring container (5) from the container inlet (25), and in the discharging position (D), The container outlet (26) faces the discharge channel (19) from the discharge port (18),
The weighing container (5) is detachably supported by the support means (10), and is a solids weighing device. The weighing container (5) includes a mounting portion (28) and a solid matter storage portion (27) that is detachably mounted on the mounting portion (28).
The mounting portion (28) is provided with a rotation support portion (13), and the mounting portion (28) is rotatably supported by the support means (10) through the rotation support portion (13). The solids measuring device according to claim 6.

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