JPH07187371A - Tablet carrying device - Google Patents

Abstract

PURPOSE:To provide a tablet carrying device by which a surplus tablet overflowed in a process to arrange and carry tablets can be sent and supplied to a recovering place without causing a flaw. CONSTITUTION:Tablets carried by a first carrying part 3 are transferred to a second carrying part 4, and are arranged in a row by an arranging part 400 arranged at an inlet of the second carrying part 4. A surplus tablet overflowed at an inlet of the arranging part 400 is collected by a surplus tablet collecting part 12, and this collecting part 12 and a sending-supplying pipe line part 13 are communicated with each other. The sending-supplying pipe line part 13 is formed in such a structure as a large number of sending-supplying pipes 16, 16, are communicated with each other by couplers 17 having a through- hole in an axis part. Gas blowout holes to blow out gas along the inner periphery of the sending supplying pipes 16 are arranged in the couplers 17 so that the gas is distributed along the circumference of the sending-supplying pipes, and the gas is blown out from the gas blowout holes of the respective couplers, and a gas flow is generated in the sending-supplying pipe line part 13. The surplus tablet is recovered by sending and supplying it up to a hopper 1 by the gas flow in the sending-supplying pipe lines.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tablet conveying device suitable for use in a line for producing tablets such as pharmaceuticals.

[0002]

2. Description of the Related Art In a line for producing tablets such as pharmaceuticals, it is sometimes necessary to arrange the tablets in a line and convey them. For example, in the step of inspecting tablets for abnormalities, tablets that are conveyed in a line are sequentially picked up by an image pickup device using an image sensor or the like as an image pickup device, and image signals obtained by the image pickup device are obtained. By processing, the presence or absence of defects such as cracks and chips of tablets is inspected.

FIG. 9 shows a structure of a carrier device which has been conventionally used for carrying tablets arranged in a line.
In the figure, 1 is a tablet supply hopper that accommodates a large number of tablets 2, 3 is a first transport unit that transports the tablets supplied from the hopper 1, and 4 is a line of the tablets transported by the first transport unit 3. A second transporting unit 6 for aligning and transporting is a tablet collecting device for feeding the tablets 2 ′ overflowing at the entrance of the second transporting unit 4 to the tablet feeding hopper 1 side and returning them to the hopper 1.

One end of the first conveying section 3 is composed of a chute 3a arranged below the discharge port of the hopper 1. The second transport unit 4 is composed of a chute 4a whose end on the inlet side is arranged adjacent to the outlet of the first chute 3a, and the tablet fed from the first transport unit 3 on the end on the inlet side. An alignment part is provided for introducing 2 into a narrow passage and aligning them in a line. A vibration imparting device 5 is arranged below the first transport unit 3, and vibration for imparting the tablets 2 to the chutes 3a and 4a is imparted by the vibration imparting device.

The tablet collecting device 6 has a tablet collecting hopper 7 for collecting the surplus tablets 2'overflowing on the inlet side of the second conveying section 4, and a surplus tablet 2'collected by the hopper 7.
It consists of a chute 8 for feeding the endless belt 9 and a stepped conveyor 9 having a large number of step-shaped holding portions 9b attached to the endless belt 9a. It is provided so as to be held and fed above the tablet feeding hopper 1.

In the above-mentioned transfer device, the first transfer section 3
Vibrates by the vibration imparting device 5 to convey the tablets 2 supplied from the hopper 1 to the second conveying section 4 side through the conveying passage. Since the width of the transport passage of the first transport unit 3 is considerably larger than the diameter of the tablet, the tablets reach the entrance of the second transport unit 4 without being aligned in a line. Second
A guide groove having a width dimension slightly larger than the diameter of the tablet 2 is provided on the chute 4a of the carrying section 4 of the above, and the alignment section provided on the inlet side of the chute 4a is provided on the downstream side in the carrying direction. An introduction groove is provided which is gradually narrowed toward the end and is tapered so as to be finally connected to the guide groove of the chute 4a. The tablets 2 transported by the first transport unit 3 are introduced into the introduction groove of the alignment unit provided on the entrance side of the second transport unit 4 and aligned in a line, and the tablets 2 are aligned in a line. It is kept and conveyed by the second conveying section 4.

In the above-mentioned conveying device, since the tablet conveying speed decreases at the alignment portion on the inlet side of the chute 4a, that is, the tablets are conveyed from the relatively wide conveying path of the first conveying portion 3 to the second conveying portion. Since it moves to the narrow guide groove of the portion 4, an extra tablet 2 ′ that cannot be completely inserted into the introduction groove portion of the alignment portion is generated and overflows at the entrance of the alignment portion. The surplus tablets 2'are collected by the hopper 7, carried by the chute 8, fed by the stepped conveyor 9 and returned to the hopper 1.

The tablets conveyed in a line by the second conveyor 4 are delivered to an inspection device (not shown) in the aligned state, and the appearance of each tablet is inspected by the inspection device.

[0009]

SUMMARY OF THE INVENTION In the conventional conveying device,
Surplus tablets 2 overflowing at the entrance of the alignment section of the second transport section 4.
The chute 8 and the stepped conveyor 9 were used to return the ′ to the hopper 1. However, when the tablet 2 ′ is scooped from the chute 8 onto the stepped conveyor, the holding portion 9b mechanically contacts the tablet. , I could hurt the tablet. Further, when the step conveyor conveys the tablets 2 ', the tablets may be jammed between the conveyor 9 and the chute 8 and may be broken. As described above, when the chute and the step conveyor are used to collect the surplus tablets, the tablets may be damaged or damaged, and thus the collected tablets may be defective. In many cases, there has been a problem that the yield of products is deteriorated.

An object of the present invention is to provide a tablet conveying device capable of recovering an excessive tablet produced during transportation without damaging it.

[0011]

According to the present invention, there is provided a first transport section for transporting tablets, and an alignment section for aligning the tablets transported by the first transport section, which are aligned by the alignment section. A tablet transport device including a second transport unit for transporting tablets, and a surplus tablet recovery device for recovering excess tablet overflowing at the entrance of the alignment unit of the second transport unit and delivering it to a predetermined recovery location. Related to.

In the present invention, the surplus tablet collecting device is provided with a surplus tablet collecting part for collecting surplus tablets overflowing at the inlet of the alignment part of the second conveying device and a joint having a through hole in the shaft core part. A plurality of supply pipes communicated with each other, one end of which is connected to the outlet of the surplus tablet collection unit, and the other end of which is provided so as to reach the collection place. Each joint of the supply pipe line portion has a peripheral wall portion along the inner periphery of the supply pipe, and a gas ejection hole for ejecting gas is formed in the peripheral wall portion of each joint on the downstream side in the supply direction. .

The gas ejection holes of each joint are provided such that the gas is distributed along the inner circumference of the feed pipe, and the gas is ejected from the gas ejection hole of each joint from the gas supply source through the gas flow controller. Each tablet is delivered to the collection site by the gas flow generated in the delivery pipe section.

It is best that the gas injection holes are provided so as to be substantially evenly distributed in the circumferential direction of the feed pipe, and they may be provided discontinuously in the circumferential direction of the feed pipe. ,
It may be provided so as to be continuous in the circumferential direction. That is,
A plurality of gas ejection holes may be provided at equal intervals in the circumferential direction of the peripheral wall portion of each joint, and the openings are one or more arc-shaped holes provided in the circumferential direction of the peripheral wall portion of each joint. May be. Further, in some cases, the gas ejection holes may be provided at unequal intervals in the circumferential direction of each joint.

A tablet feeding hopper is usually arranged on the inlet side of the first conveying section. In this case, it is preferable to use the hopper as a collection place for the surplus tablets and to return the collected surplus tablets into the hopper.

Further, in order to surely collect the surplus tablets by the carrier device of the present invention, a gas flow is generated in the feeding pipe line before the surplus tablets are collected in the surplus tablet collecting section. Is desirable. Therefore, by using an automatic control valve as the gas flow controller, the automatic control valve is controlled so that the gas ejection holes of the joint are communicated with the gas supply source before the surplus tablets are collected in the surplus tablet collection unit. It is preferable to do so.

[0017]

In the above conveying device, the gas ejection holes provided in each joint of the feed pipe portion are provided so as to be distributed along the inner circumference of the feed pipe, and the inner circumference of the feed pipe is Since the gas is ejected along the surface, a gas flow that is close to the rectified state and flows in the feeding direction with the inner peripheral surface of the feeding pipe portion substantially uniformly covered is generated. The surplus tablets overflowing at the entrance of the alignment section are sent to the collection place by riding on this gas flow. The gas flow in the feeding pipe portion flows along the inner peripheral surface of the feeding pipe in a state close to rectification, so that the tablet is stably transported. In this case, the gas flow along the inner peripheral surface of the delivery pipe acts as a cushion, and the tablet comes into soft contact with the inner surface of the delivery pipe, preventing the tablet from being damaged during transportation. be able to.

As described above, according to the carrier of the present invention,
Since the excess tablets overflowing at the entrance of the alignment section can be collected without damage, the product yield can be improved.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the overall construction of an embodiment of the present invention. In the figure, 1 is a tablet supply hopper to which tablets 2 are supplied through a chute 10 from a tablet manufacturing apparatus (not shown). 3 is a chute 3a whose end on the inlet side is arranged below the discharge port of the hopper 1.
1 is a first transport unit, and 4 is a chute 3 of the first transport unit.
It is a second transport unit including a chute 4a connected to a. A vibration imparting device 5 is arranged below the first transport unit 3, and the vibration by the vibration imparting device 5 is transmitted to the chutes 3a and 4a.

Reference numeral 11 denotes a surplus tablet recovery device for recovering surplus tablets 2'generated at the entrance side of the second transfer part 4. The surplus tablet recovery device 11 overflows at the entrance of the second transfer part 4. A guide path 12 that receives the excess tablets 2'and guides the excess tablets in a direction different from the transport direction of the transport units 3 and 4.
a and a hopper 12b for collecting the surplus tablets guided by the guide path 12a, and a surplus tablet collected by the surplus tablet collection unit 12 is fed to the collection place by a gas flow. It is composed of a supply pipe section 13. In the illustrated example, the outlet of the feeding conduit 13 is connected to the tablet feeding hopper 1 to collect the tablets in the hopper.

A tablet inspection device is appropriately arranged on the outlet side of the second transport section 4. For example, a belt conveyor 14 including a large number of carriers that hold tablets in a predetermined posture is arranged, and the tablets 2 transported by the second transport unit 4 are delivered to the carriers on the belt conveyor 14. A television camera 15 having an image sensor or the like as an image pickup element is arranged above the belt conveyor 14, and the appearance of each tablet on the belt conveyor 14 is inspected by the television camera.

2 and 3 show the structures of the main parts of the chutes 3a and 4a constituting the first carrying section 3 and the second carrying section 4, respectively. The chute 3a is, for example, in the carrying direction. It has a plurality of (four in the illustrated example) guide grooves 301 extending in parallel. Width W1 of guide groove 301
Is set to be sufficiently larger than the diameter of the tablet 2, so that the tablet 2 can be easily conveyed by the vibration given by the vibration applying device 5. The chute 4a that constitutes the second transport unit 4 has a guide groove 401 that corresponds to the guide groove 301 of the chute 3a, and its end on the inlet side is slightly at the end on the outlet side of the chute 3a. They are opposed to each other via a gap g. On the inlet side of the chute 4a, an area A is provided in which an end portion of the partition wall portion 402 partitioning between two adjacent guide grooves 401, 401 is removed by a certain length. The guide groove 4 is formed by tapering the side surface of the end of the partition wall 402 on the region A side.
An introduction groove portion 401a is formed in which 01 is gradually narrowed toward the transport direction. This introduction groove portion 401a
Guide groove 401 in a portion leading to the exit of chute 4a
The width W2 of the tablet is set to be slightly larger than the diameter of the tablet 2. In this example, the portion from the end of the chute 4a on the inlet side to the introduction groove 401a via the region A constitutes the alignment portion 400 for aligning the tablets 2 in a line in a lying state.

In this embodiment, a surplus tablet discharge hole 403 is formed so as to penetrate the bottom of the area A. The excess tablet discharge hole 403 is provided so that both ends in the width direction, that is, the direction orthogonal to the transport direction, slightly overlaps the transport passage of the tablet 2, and when the tablets are crowded in the alignment section 400, excess tablets are discharged. The tablet 2 ′ is designed to drop through the discharge hole 403.

As described above, the guide path 12a is arranged below the inlet end of the chute 4a, and the tablet collecting hopper 12b is arranged below the exit of the guide path 12a.

Feeding pipe section 13 communicated with the hopper 12b
For example, as shown in FIG. 4, a plurality of feed pipes 16 having smooth inner surfaces are connected by a joint 17 having a through hole in the shaft core. For example, as shown in FIG. 5, each joint 17 engages with the feed pipes 16, 16 at both ends, and at least the peripheral wall portion 17a protruding in the feed direction side, that is, the X1 direction, and the annular wall protruding in the radial direction. Protrusion 17b
And each joint 17 in a state where airtightness is properly maintained.
And the feed pipes 16 and 16 are connected. In this case, each joint 17 and the feed pipe 16 can be made completely airtight by the packing material and the sealing member.
It suffices that a rough airtight state is achieved by the engagement between 7 and the feeding pipe 16.

The inner surface of the joint 17 is formed with a tapered hole 17c having a diameter gradually decreasing toward the downstream side in the feeding direction, and the feeding pipe 16 on both sides of the joint 17 is formed through the hole 17c. , 16 are communicated.

A gas passage 17d extending in the circumferential direction is formed inside the joint 17, and a gas ejection hole 17e provided so as to open at the tip surface 17a1 of the peripheral wall portion 17a is provided in the gas passage 1.
It is connected to 7d.

A joint pipe portion 17f is projectingly provided on the projecting portion 17b of the joint, and a gas passage opened in the joint pipe portion 17f communicates with the gas passage 17d. A screw 17g is formed on the joint pipe portion 17f, and a gas supply pipe 19 is connected via a cap nut 18 screwed to the screw 17g.

As shown in FIG. 7A, the gas ejection holes 17e may be provided such that a plurality of openings are arranged at equal intervals in the circumferential direction of the peripheral wall portion 17a, as shown in FIG. 7B. As shown, the opening may be provided with one or more arc-shaped holes in the circumferential direction of the peripheral wall portion 17a. This gas ejection hole 17e
Is best provided so as to be distributed substantially evenly in the circumferential direction along the inner circumference of the feed pipe.

The above-mentioned joints 17 are provided at predetermined intervals along the lengthwise direction of the feed pipe line portion 13, but extend in the horizontal direction of the feed pipe line portion 13 as in the area B shown in FIG. In a portion or a portion extending in a direction close to the horizontal direction, the distance L1 between the adjacent joints 17 is made relatively large, and like the region C, an inclined portion of the feeding conduit portion 13 or a portion extending in the vertical direction (tablet In the portion (feeding portion against gravity), the distance L2 between the adjacent joints 17 is set small.

The gas passage 17d of each joint 17 includes a gas supply pipe 19, a flow rate control valve 20, a compressed gas supply pipe 21 routed along the supply pipe line portion 13, and an open / close stop valve. Via the gas flow controller 22 composed of
It is connected to a compressed gas supply source 23 including a compressor and the like. Dry air is usually used as the compressed gas.

When an automatic control valve such as a solenoid valve is used as the gas flow controller 22, before the surplus tablets are collected in the surplus tablet collecting section 12, the gas ejection holes of the joint 17 and the gas supply source 23 are connected to each other. The automatic control valve is controlled so as to communicate with each other. Before the surplus tablets are collected in the collection unit 12, the gas ejection holes of the joint 17 and the gas supply source 23 can be communicated with each other by, for example, when a start switch for starting the transportation of the tablets is turned on. The automatic control valve constituting 22 may be opened.

Next, the operation of the above embodiment will be described. Prior to starting the transportation of tablets, the compressed gas is supplied to the gas passage 17d of each joint 17 of the supply pipe 13 through the gas flow controller 22, and the gas is ejected from the gas ejection holes 17e. . For example, since the gas ejection holes 17e are provided so as to be distributed substantially evenly in the circumferential direction along the inner circumference of the feed pipe 16, the inner circumference of the feed pipe 16 is provided in the feed conduit portion 13. A gas flow close to a rectified state that almost uniformly covers the surface is generated. Each flow rate control valve 20 is adjusted so that a gas flow is generated in each part of the feed conduit portion 13 without excess or deficiency.

When the tablets 2 are supplied from the tablet supply hopper 1 to the first conveying section 3, the tablets 2 are conveyed to the second conveying section 4 side along the guide groove 301 of the chute 3a.
The tablets 2 reaching the entrance of the second transport unit 4 are arranged in the aligning unit 400.
Guide groove 40 while being guided by the introduction groove portion 401a of
1 and are aligned in a line, and each of the guide grooves 40
The inside of 1 is conveyed toward the exit side of the chute 4a.

Since the guide groove 301 of the first conveying section 3 is wider than the guide groove 401 of the second conveying section 4, the amount of tablets conveyed in the first conveying section 3 is equal to that of the second conveying section 4. Is greater than the carry amount. Therefore, the alignment unit 400
The tablet 2 overflows near the entrance of, and this overflowed tablet falls on the guide path 12a from the discharge hole 403 as an extra tablet 2 '. The tablet 2'falling on the guide path 12a slides down on the guide path 12a and falls into the hopper 12b. In the feed pipe line portion 13 communicating with the hopper 12b, the feed pipe 1
Since a gas flow is generated along the inner peripheral surface of 6, the tablet 2 '
Are transferred to the hopper 1 by the gas flow.

When the tablets are transferred by the gas flow, for example, as shown in FIG. 8, a nozzle 23 is arranged at the center of the feed pipe 16 'to generate a gas flow in cooperation with the gas flow of the joint 17. Can be made.

As described above, when the gas is circulated along the inner peripheral surface of the supply pipe to generate a gas flow close to the rectified state along the inner peripheral surface of the supply pipe, the tablet 2'is stabilized. Since the gas flow along the inner peripheral surface of the delivery pipe acts as a cushion to bring the tablet 2 ′ into soft contact with the inner surface of the delivery pipe, the tablet is delivered. You can prevent damage on the way.

As described above, according to the carrying apparatus of the present invention,
Since the excess tablets overflowing at the entrance of the alignment section can be collected without damage, the product yield can be improved. Of course, according to the present invention, the structure can be greatly simplified as compared with the conventional structure, so that the cost can be significantly reduced.

In the above-mentioned embodiment, as shown in FIG. 6, if the gas flow is generated after the tablets 2'accumulate at the inlet side of the feeding pipe line portion 13, all the accumulated tablets are conveyed. It will be difficult to pay. Therefore, in order to reliably collect the tablets, the hopper 1 is passed through the guide passage 12a.
It is necessary to generate a gas flow in the feed line 13 before the excess tablets 2'are contained in 2b to some extent.

In the above-mentioned embodiment, the outlet of the feeding pipe 13 is connected to the side of the tablet feeding hopper 1 to open the outlet in the hopper 1. The outlet may be opened above the hopper 1.

In the above-mentioned embodiment, the tablet feeding hopper 1 is used as a collection place for the surplus tablets. However, a place other than the hopper 1 (for example, the entrance side of the first carrying section 3 or a specially prepared collection container) ), The excess tablets may be collected.

In the above embodiment, the tablets 2 are aligned in the lying state in the aligning section 400 at the entrance of the second transport section 4, but the aligning section 400 is provided with means for changing the posture of the tablets 2. The present invention can also be applied to the case where the tablets 2 are aligned in a line in a vertical state. In the above embodiment, the feed pipe 16 constituting the feed pipe line portion 13 is transparent. If it is made of a plastic material or the like, it is possible to observe the state of the tablets fed in the feed pipe section 13, so that the gas flow in the feed pipe line is adjusted and the feeding state is adjusted. Can be in a desired state.

In the carrier device according to the present invention, if all or most of the pipeline of the feed pipe 16 is a fixed pipe,
All or most of the arrangement of the pipeline will be determined, and in this case, a pipeline portion in which the tablet is difficult to be fed, such as a rising portion or a bent portion, may occur. In that case, the flow rate adjusting valve 20 is adjusted so as to increase the flow rate of the gas flowing through the joint 17 arranged in the vicinity of the pipe portion that is difficult to be fed, or to increase the speed of the flowing gas. be able to.

Further, in the case of using a fixed feeding pipe line, since the pipe line portion where tablets are difficult to be fed is known in advance, it is possible to determine the arrangement state such as bending and starting of the feeding pipe and the gravity direction. Considering this, the gas ejection holes 17 provided in the peripheral wall portion 17a of the joint 17 are provided.
e can be provided at unequal intervals in the circumferential direction. For example, the interval between the gas ejection holes 17e may be reduced so that a large amount of gas may flow in the direction having a large curvature, the cross-sectional area of the gas ejection holes 17e may be reduced to increase the gas flow velocity, or these means may be used. Both can be taken.

Also, when the feed pipe 16 is a so-called flexible pipe, when the flexible pipe is installed in the previously planned pipe line state as described above, in the case of the fixed pipe described above. The same items as can be adopted.

Of course, if the used gas is compressed dry air, the cost can be reduced. Also, if compressed dry air is used, so-called maintenance work becomes familiar, and therefore maintenance management can be facilitated.

It is also possible to use so-called inert gas such as carbon dioxide and nitrogen depending on the quality of the tablets to be transported, especially the surface material.

Further, although the tablet carrying capacity is reduced, when the number of aligning portions for aligning the tablets is small, such as one row or two rows, the guide portion 12a is omitted and the dropping tablets are directly moved by the hopper 12b. Can be taken to.

Of course, it is also possible to cover most of each of the first and second conveying parts with a cover so that dust and the like do not enter the conveying path during the conveyance.

[0050]

As described above, according to the present invention, a plurality of feed pipes are communicated with each other through a joint having a through hole in a shaft core portion to form a feed pipe line portion, and each joint is connected to each joint. Since the surplus tablets are fed by the gas flow generated by ejecting the gas from the provided gas ejection holes, the tablets can be delivered to the collection place without difficulty.

In particular, in the present invention, the gas ejection holes are provided in a state of being distributed in the circumferential direction of the feeding pipe, so that the gas flow in the feeding direction of the tablet in a state of substantially covering the inner peripheral surface of the feeding pipe. As a result, the tablet can be stably transferred, and the gas flow along the inner peripheral surface of the delivery tube acts as a cushion to softly contact the tablet with the inner surface of the delivery tube. Therefore, it is possible to prevent the tablets from being damaged during the feeding.

Thus, according to the carrier of the present invention,
Since the excess tablets overflowing at the entrance of the alignment section can be collected without damage, the product yield can be improved.

Further, according to the present invention, since the structure is greatly simplified as compared with the conventional one, the cost can be greatly reduced.

[Brief description of drawings]

FIG. 1 is a configuration diagram schematically showing an overall configuration of an embodiment of the present invention.

FIG. 2 is a first transport section and a second transport section used in an embodiment of the present invention.
It is a perspective view showing the composition of the important section of the conveyance section of.

FIG. 3 is a top view of FIG.

FIG. 4 is a configuration diagram showing a configuration example of a feeding conduit unit used in an embodiment of the present invention.

FIG. 5 is a cross-sectional view showing the structure of a joint used in the feeding pipe section in the embodiment of the present invention.

FIG. 6 is a cross-sectional view for explaining a problem when the generation of a gas flow in the supply pipeline is delayed.

7 (A) and 7 (B) are perspective views showing different structural examples of the joint used in the embodiment of the present invention.

FIG. 8 is a cross-sectional view showing an example of addition of a feeding pipeline using a gas flow.

FIG. 9 is a configuration diagram schematically showing a configuration of a conventional transport device.

[Explanation of symbols]

 1 Tablet Supply Hopper 2 Tablet 2'Excessive Tablet Overflowing at the Entrance of the Second Conveying Section 3 First Conveying Section 4 Second Conveying Section 400 Aligning Section 11 Surplus Tablet Collecting Device 12 Surplus Tablet Collecting Section 12a Guideway 12b Surplus tablet collecting hopper 13 Feeding pipe line portion 16 Feeding pipe 17 Joint 17e Gas ejection hole 20 Flow rate adjusting valve 22 Gas flow controller 23 Compressed gas supply source

Claims (5)

[Claims] 1. A first transporting unit for transporting tablets, and an aligning unit for aligning the tablets transported by the first transporting unit, and a second transporting unit for aligning the tablets aligned by the aligning unit. A surplus tablet recovery device comprising: a transfer part and a surplus tablet recovery device that recovers excess tablets overflowing at the entrance of the alignment part of the second transfer part and sends them to a predetermined recovery location. The device is composed of a surplus tablet collecting section for collecting surplus tablets overflowing at the entrance of the alignment section of the second conveying section, and a plurality of feeding pipes connected to each other through a joint having a through hole in the shaft core. And one end of which is connected to the outlet of the surplus tablet collection unit and the other end of which is provided so as to reach the collection place, and each joint of the supply pipe unit is a supply pipe. It has a peripheral wall part along the inner circumference of and discharges gas to the downstream side in the feeding direction. Gas ejection holes are formed in the peripheral wall of each joint, and the gas ejection holes of each joint are provided so that the gas is distributed along the inner circumference of the feed pipe. A tablet transporting device, wherein each tablet is fed to a collecting place by a gas flow generated in a feeding pipe section by a gas ejected from a gas ejection hole of each joint. 2. The tablet conveying device according to claim 1, wherein a plurality of the gas ejection holes are provided at equal intervals in the circumferential direction of the peripheral wall portion of each joint. 3. The tablet conveying device according to claim 1, wherein the gas ejection holes are one or more arcuate holes whose openings are provided in the circumferential direction of the peripheral wall of each joint. . 4. The tablet supply hopper for supplying tablets, which is arranged on the inlet side of the first transport section, and the recovery place is a tablet supply hopper. The tablet conveying device according to one. 5. The gas flow controller is an automatic control valve, and is controlled so that the gas ejection hole of the joint and the gas supply source are communicated with each other before excess tablets are collected in the excess tablet collecting section. The tablet conveying device according to any one of claims 1, 2, 3 and 4.