JPH0772005B2 - Vibratory parts feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to an oscillating component supply device for supplying components to an automatic assembling device and other subsequent process devices in a manufacturing process such as a factory.

<Prior Art> As a device for supplying parts to an automatic assembling device in a manufacturing process or the like, there are a large number of ball feeders having straight feed troughs and straight feeders as compared with conventional devices.

These component feeders are provided with a feeding trough on a vibrating part that generates a minute vibration, and vibrate the components on a single-row feeding guide on the feeding trough to direct the component in a desired direction. After that, the parts are supplied to the target device.

<Problems to be Solved by the Invention> In the conventional component feeding apparatus, since it is a single-row feeding guide, the feeding and feeding ability of the components is naturally limited, and an automatic assembling apparatus that requires high speed. It is not possible to catch up with the supply of parts to the factory, resulting in time loss such as temporarily stopping the assembly equipment.

In order to eliminate this time loss, there is a system in which a plurality of component supply devices are arranged side by side and the plurality of component supply devices simultaneously supply components. However, in such an apparatus, not only the equipment cost is increased, but also the movable range of the component taking-out arm of the automatic assembling apparatus and the like must be increased, which is very inefficient.

INDUSTRIAL APPLICABILITY The present invention has made it possible to provide a vibrating component supply device that can feed more components more quickly and with a single component supply device.

<Means for Solving the Problems> The vibrating component supply device according to the present invention includes the following (a) to
It has the structure of (k).

(A) First trough 19, second trough 20, third trough 21, fourth trough 22, and fifth trough for feeding on the upper surface of a trough base 18 that is slightly vibrated obliquely back and forth by a vibration generator equipped with an electromagnet. Structure with 23.

(B) U-shaped track grooves 19a on the upper surface of the first trough 19, two grooves 20a, 20b on the upper surface of the second trough 20, and four grooves 21a, 21b on the upper surface of the third trough 21. , 21c, 21d formed structure.

(C) Even number of guide rails for feeding on the upper surfaces of the fourth trough 22 and the fifth trough 23 on the same line as the grooves 21a, 21b, 21c, 21d of the third trough and slightly lower than the grooves. 27a, 27
Structure with b, 27c and 27d.

(D) Front guide rails 27a, 27b, 27 of the fourth trough 22
A hole 29a is formed between c and a hole 29b is also formed beside the guide rails 27a and 27d, and a cavity 30 for removing the component 28 is provided under these holes 29a and 29b. The trough base 18 is provided with a side slope 31, and the component 28 dropped into the cavity 30 through the holes 29a and 29b is discharged to the return feeder 32, and the return feeder 32 is moved in the opposite direction to the trough base by the reverse feeding vibration generator 33. A structure that allows for slight vibration.

(E) A hopper 35 is provided on the first trough 19, and pedestals 40a, 40b for leaf springs are provided on the left and right side surfaces of the lower portion of the hopper 35.
The front and rear leaf springs 38a, 38b and the leaf springs 39a, 39b are respectively fixed to the pedestals 40a, 40b, and the metal fittings 41a are attached to the lower portions of the leaf springs 38a, 38b and the lower portions of the leaf springs 39a, 39b. The metal fittings 41b are attached respectively, and the tray 42 is tilted forward by the metal fittings 41a and 41b, and the pedestal 44 is fixed between the side plates 43a and 43b installed at the rear of the hopper 35. A structure in which an electromagnet 45 facing the mover 46 attached to the rear surface of the tray 42 is fixed to the front surface to form a vibrating device.

(F) A rail mounting base 55 is provided at the front end of the trough base 18 so as to be orthogonal to the trough, and the rail fixed on this base 55.
56, slide piece 5 fixed to the bottom surface of both ends of the shutter 54
The first confluence part 48 in which the shutters 54 can be slid in the left-right direction (direction orthogonal to the trough feeding direction) by fitting 8,58.

(G) Depressions 60a, 60b, 60c, 60d on the upper surface of the shutter 54
In addition, relay guides 61a, 61b, 61c, 61d, which are projections having the same height and the same shape as the guide rail 27 of the trough, are provided in the center of each recess, and the relay guides 61a, 61c are provided.
Is on the same line as the guide rails 27a, 27c of the trough, but the relay guides 61b, 61d are on the extension lines of the guide rails 27a, 27b and the guide rails 27c, 27d, and between the guides 61a and 61b, The distance between 61c and 61d should be
The structure is such that L / 2 is the distance between a, 27b, 27c, and 27d.

(H) A cylinder device 62 is attached to one end of the rail mount 55, and the shutter 54 is connected to the relay guides 61a and 61 when the plunger rod of the cylinder 62 device is operated as described above.
While c is aligned with the guide rails 27a and 27c, the relay guides 61b and 61d are located between the guide rails 27a and 27b, respectively.
It is located between 7c and 27d, and the relay guides 61b and 61d are aligned with the guide rails 27b and 27d by the retracting movement of the plunger rod, while the relay guides 61a and 61c are located between the guide rails 27a and 27b and 27c and 27c, respectively. A structure that can be reciprocated so that it can be positioned between 27d.

(I) A stopper plate 69 whose lower part is attached to the rail mount 55 is provided at the discharge-side front end of the shutter 54, and the guide plates 27a and 27b of the fifth trough 23 are provided on this stopper plate 69.
, A structure in which notches 69a, 69b for passing parts are formed at portions corresponding to respective central extension lines between 27c and 27d.

(J) On the second trough base 51 that is slightly vibrated obliquely back and forth by the second vibration generating device 49 having the electromagnet 86,
A structure in which a first discharge trough 65, a second discharge trough 66, and a second discharge trough 67 are sequentially attached to the first merge section 48.

(K) Two guide rails 68a, 68b are provided on the upper surface of the first discharge trough 65 so as to be continuous with the cutouts 69a, 69b of the stop plate, and the second merging portion 66 is provided with the first merging portion 48.
Similarly, the slide pieces 91, 91 fixed to the shutter 74 that slides back and forth are fitted to the rail 71 on the rail base 70, and the plunger rod 72a of the cylinder device 72 attached to the rail base 70 is attached to one end of the shutter 74. Similar to the shutter 54, two recesses 76a, 76b provided with relay guides 75a, 75b each made of a projection are provided on the upper surface of the shutter 74 at an interval L so as to prevent the rail base 70 from being discharged. A stopper plate 77 having a notch 70a coinciding with the center line of the guide rails 68a, 68b is attached to the side surface, and the notch 77a of the stopper plate 77 is provided on the second carry-out trough 67 following the second joining portion 66. A structure with a guide rail 78 continuous with.

<Example> An example of the present invention will be described in detail below with reference to the drawings.

In FIG. 1, the mount base 2 of the vibration generating unit 25 is attached to the center of the base 1 with screws 26, and the leaf springs 3a and 3b are attached to the screws 4 on the inclined front and rear end faces of the mount base 2.
It is attached by tilting it back and forth.

A counterweight 5 attached to each leaf spring with a screw 6 is provided between the leaf springs 3a and 3b, and a cover plate 7 is fixed with a screw 8 above the leaf springs 3a and 3b. The side covers 9 and 9 are fixed to the left and right side surfaces of the counter weight 5 with screws 92, and the pedestal 10 is mounted on the side covers 9 and 9.
Is fixed with screws. An electromagnet 11 is attached to the front surface of this pedestal 10 with a screw 12, and a mover 13 facing the electromagnet 11 is provided.
Is fixed to the cover plate 7 with screws 14, and the leaf springs 3a and 3b are slightly vibrated obliquely back and forth.

On the cover plate 7, screw the seat plate 15 of the alignment feeder 90.
A trough base 18 having a long body and a slope at a small slope at the rear is fixed with screws 17 on top of it, and the trough base is slightly slanted forward and backward by the operation of the electromagnet. Vibrated. Further, on the upper surface of the trough base 18, the first trough 19, the second trough 20, the third trough 21, the fourth trough 22 and the fifth trough 23 for feeding from the rear are respectively attached with screws 22. , 5th trough 23
It is tilted slightly forward.

On the upper surface of the first trough 19, for example, a track groove 19a for aligning the U-shaped parts 28 is provided, and on the upper surface of the second trough 20, two grooves 20a and 20b are similarly provided on the upper surface of the third trough 21. Has 4 grooves 2
1a, 21b, 21c and 21d are provided respectively.

Further, on the upper surfaces of the fourth trough 22 and the fifth trough 23, an even number of guide guides 27a, 27b, for example, four guide rails 27a, 27b,
The guide rails 27c and 27d are provided at equal intervals.
a, 27b, 27c, 27d are on the same line as the grooves 21a, 21b, 21c, 21d,
Moreover, the height is slightly lower than the groove.

An oval hole 29a is formed in the front portion of the fourth trough 22 between the guide rails 27a, 27b and 27c, and a hole 29b is also formed beside the guide rails 27a and 27d. is there. These holes 29
A cavity 30 for removing the component 28 is provided under a and 29b,
A side slope 31 is provided on the trough base 18 in the front part of the cavity 30, and a part 28 dropped into the cavity 30 through the holes 29a and 29b.
Are discharged to the return feeder 32. The return feeder 32 is mounted on the reverse vibration generator 33 via the connecting plate 95, and the reverse vibration generator 33 has the same structure as the vibration generator 25. That is, the counter weight 81 is attached to the center of the leaf springs 82a, 82b attached so as to connect the mount base 84 and the upper base 85, and the side covers 83, 83 attached with screws 93 on both sides of the weight 81. An electromagnet 79 is attached to a gantry 80 passed between the upper parts.

In addition, the vibration direction of the reverse-feed vibration generating unit 33 is the vibration generating unit 25.
The component 28 is fed backward toward the first trough 19 on the above-described return feeder 32 that is slightly inclined outward.

A hopper 35 is provided on the first trough 19, and the hopper 35 has two columns 36 fixed to the base 1 with screws 99.
It is attached to a and 36b via dampers 37a and 37b.

On the left and right side surfaces of the lower part of the hopper 35, pedestals 40a for leaf springs,
40b are fixed, and front and rear leaf springs 38a, 38b and leaf springs 39a, 39b are fixed to the pedestals 40a, 40b, respectively.
Fit the metal fitting 41a under the a and 38b, and the metal fitting 4 under the leaf springs 39a and 39b.
1b are attached respectively, and the tray 42 is attached by inclining forward with these metal fittings 41a, 41b.

A pedestal 44 is fixed between the side plates 43a, 43b that are hung down at the rear of the hopper 35, and on the front surface of the pedestal 44,
An electromagnet 45 facing the mover 46 attached to the rear surface of the tray 42 is fixed to form a vibrating device.

At the front end of the trough base 18, a rail mounting base 55 of the first confluence portion 48 orthogonal to the trough is fixed.
The rail 56 is mounted on the 55 with screws 57.
56, slide piece 5 fixed to the bottom surface of both ends of the shutter 54
The shutters 54 can be slid in the left-right direction (the direction orthogonal to the trough feeding direction) by fitting 8,58.

The upper surface of the shutter 54 is provided with depressions 60a, 60b, 60c, 60d, and in the center of each depression, a relay guide 61a consisting of a protrusion having the same height as the guide rail 27 of the trough, 61b, 61c, 61d are provided. Then the relay guides 61a, 61c are the guide rails 27a, 27c of the trough.
The relay guides 61b and 61d are on the midline extension of the guide rails 27a and 27b and the guide rails 27c and 27d, and the distance between the guides 61a and 61b and 61c and 61d is If the distance between the rails 27a, 27b, 27c, 27d is L, then L / 2
It is designed to be

An air cylinder 62 is attached to one end of the rail mount 55, and the tip of the plunger rod 62a of the air cylinder 62 is fixed to the side of the shutter 54 with a screw 63. Due to the work, the shutter guide 54 has the relay guides 61a and 61c that are located on the guide rail 2
Guides for relays 61b, 61d, while matching 7a, 27c
Are located between the guide rails 27a and 27b and between the 27c and 27d, respectively, and the guide rods 61b and 61d for the relay can be aligned with the guide rails 27b and 27d as shown in FIG. The guides 61a and 61c are reciprocated so as to be positioned between the guide rails 27a and 27b and between the guide rails 27c and 27d, respectively.

At the discharge-side front end of the shutter 54, attach the lower part to the rail mount 55.
There is a stopper plate 69 attached to the guide rails 27a and 27b of the fifth trough 23.
In the meantime, notches 69a, 69b for passing parts are formed at portions corresponding to the respective central extension lines between 27c and 27d.

A discharge feeder portion 64 that tilts forward is provided following the first merging portion 48. The discharge feeder portion 64 is mounted on the second trough base 51 and has the same structure as the vibration generating portion 25.
The second vibration generator 49 having 88a, 88b, side covers 89, 89 counterweight 87 and electromagnet 86 slightly vibrates diagonally forward and backward.

Further, a first discharge trough 65, a second merging portion 66, and a second discharge trough 67 are sequentially mounted on the second trough base 51.

In addition, the second vibration generating unit 49 is provided with the inclined pedestal 52 on the base 1.
It is attached on the top.

On the upper surface of the first discharge trough 65, two guide rails 68a,
68b is provided so as to be continuous with the notches 69a and 69b of the stop plate.

Further, the second merging portion 66 is a shutter that slides back and forth on the rail 71 on the rail base 70, similarly to the first merging portion 48.
The slide pieces 91, 91 fixed with screws are fitted to both ends of the screw 74, and the plunger rod 72a of the air cylinder 72 attached to the rail base 70 is screwed to one end of the shutter 74.
Stopped at 7. Similar to the shutter 54, the upper surface of the shutter 74 has a guide for the relay, each of which has a protrusion.
Two recesses 76a, 76b provided with 75a, 75b are provided at an interval L, and guide rails 68a, 68 are provided on the side surface of the platform 70 in the discharge direction.
Stopper plate with notch 70a that matches the center line of b
I have attached 77.

Further, on the second discharge trough 67 following the second merging portion 66,
A guide rail 78 continuous with the notch 77a of the stopper plate 77 is provided.

<Operation> The operation and operation of the above-described vibratory component supply device are as follows.

When the electromagnet 45 of the hopper 35 is operated by an alternating current, the hopper 35 is slightly vibrated, and the parts 28 in the hopper 35 are gradually discharged to the tray 42.
Is dropped little by little on the first trough 19.

The trough base 18 to which the first trough 19 is attached is vibrated obliquely back and forth by the vibration generator 25, and this vibration causes
The component 28 on the trough 19 is moved by a ditch and gradually advances along the groove 19a, and is sequentially transferred to the next second trough 20 and third trough 21.

In the third trough 21, the components 28 are formed by the four rows of grooves 21a, 21b, 21c, 21d.
Are respectively fed and further advanced on the guide rails 27a, 27b, 27c and 27d of the next fourth trough 22.

At this time, the parts 28b that could not get on the guide rails were
9b, is discharged into the return feeder 32 through the cavity 30 and the side slope 31, and the parts 28 on the return feeder 32 are discharged.
The b is sent back by the vibration generated by the back-feeding vibration generating unit 33 and returned to the first trough 19.

The parts are transferred by the guide rails 27a to 27d. Among them, the guide rails for which the relay guides of the first shutter 54 match, for example, the parts on 27b and 27d in FIG. 6 are transferred to the relay guides 61b and 61d. However, the stopper plate 69 temporarily blocks the forward movement.

By the operation of the first shutter 54, the relay guide 61b,
When 61d comes to the positions of the notches 69a and 69b of the stopper plate 69, the parts on the relay guides 61b and 61d are placed in the first discharge trough 6
It can be transferred to the two guide rails 68a, 68b of 5 and can be advanced on the guide rails.

During this time, the relay guides 69a, 69c are connected to the guide rails 27a, 27.
The parts on the guide rails 27a, 27 are connected to the relay guides 69a, 69c.

When the first shutter 54 moves back and the relay guides 61a, 61c are aligned with the notches 69a, 69b of the stopper plate 69 as shown in FIG. 6, the parts of the relay guides 61a, 61c are the guides of the first discharge trough. Transferred to the rails 68a and 68b, and moved forward by the guide rails.

The parts on the guide rails 68a and 68b are the second shutter 74-2.
The relay guides 76a and 76b are transferred to each other in the same manner as the first shutter, and the part of the relay guide (75a in FIG. 6) that matches the notch 77a of the stopper plate 77 is one of the second discharge troughs 67. On the guide rail 78, forward on the guide rail 78, and sent from the tip to the next process section.

In the above-described embodiment, the guide rails 27a to 27d, 68a to 69b,
The 78 and the relay guides 61a to 61d and 75a to 75b are each formed of a ridge (rail) or a protrusion, but may be formed of a groove instead of the rail or the protrusion.

<Effects of the Invention> As described above, according to the present invention, a plurality of aligning guides of the aligning feeder unit are aligned, and the components transferred in parallel are arranged on the final discharge trough by the shutters that reciprocally slide in multiple stages. Since they are collectively transported on one guide, and parts are supplied to the target device from this discharge trough,
It becomes possible to supply parts more rapidly and stably.

Moreover, in the conventional device, a plurality of component supplying devices had to be installed in parallel, but this device requires only one component supplying device, and the equipment cost can be reduced.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment of a vibrating component supply apparatus according to the present invention, FIG. 2 is its plan view, and FIG. 3 is FIG. 2 III-III.
4 is a sectional view taken along line IV-IV of FIG. 2, FIG. 5a is a sectional view taken along line Va-Va of FIG. 2, and FIG. 5b is a sectional view taken along line Vb-Vb of FIG. FIG. C is a sectional view taken along line Vc-Vc of FIG. 2, and FIG.
FIG. 6 is a sectional view taken along line Vd-Vd, FIG. 6 is a perspective view of the first joining portion and discharge feeder portion 64, FIG. 7 is a sectional view taken along line VII-VII of FIG. 2, and FIG. 8 is line VIII-VIII of FIG. Sectional view, Fig. 9 is Fig. 2 IX-
IX line sectional view, FIG. 10 is a front view of the first shutter portion, 11th
The figure is a front view of the second shutter portion. In the figure, 1 ... Base, 2 ... Mount base 3a, 3b ... Leaf spring 4,6,8,14,16,17 ... Screw 5 ... Counterweight 7 ... Base, 9 ... Side cover 10 ...... Pedestal, 11 ...... Electromagnet 12 ...... Screw, 13 ...... Mover 15 ...... Seat plate, 18 ...... Trough base 19 ...... 1st trough, 20 ...... 2nd trough 21 ...... 3rd trough, 22 …… 4th trough 23 …… 5th trough, 24 …… screw 25 …… vibration generator, 26 …… screw 27a, 27b, 27c, 27d …… guide rail 28 …… parts, 29a, 29b …… hole 30 ...... Cavity, 32 ...... Return feeder 33 ...... Reverse feed vibration generator 35 ...... Hopper, 36a, 36b ...... Post 37a, 37b ...... Damper 38a, 38b, 39a, 39b ...... Leaf spring 40a, 40b ...... Base, 41a, 41b ... Metal fitting 42 ... Tray, 43, 43b ... Side plate 44 ... Coil base, 45 ... Electromagnet 46 ... Mover, 48 ... First confluence part 49 ... Second vibration generating part 50 …… Seat plate, 51 …… Second trough base 52 …… Pedestal, 53 …… Second base 54 …… First shutter 55 …… Rail mount 56 …… Rail, 57 …… Screw 58 …… Slide piece, 60a, 60b, 60c, 60d …… Recess 61a, 61b, 61c, 61d ...... Relay guide 62 …… Air cylinder 62a …… Plunger rod 63 …… Screw, 64 …… Discharge feeder section 65 …… First discharge trough 66 …… Second confluence section 67 …… Second discharge trough 68a, 68b …… Guide rail 69 …… Stopper plate 70 …… Base, 69a, 69b …… Notch 70 …… Base, 71 …… Rail 72 …… Air cylinder 72a …… Plunger rod 74 …… Second shutter 75a, 75b ...... Relay guides 76a, 76b …… Dimples, 77 …… Stopper plates 78 …… Guide rails 79 …… Electromagnets, 80 …… Stands 81 …… Counterweights 82a, 82b …… Leaf springs, 83 …… Side covers 84 ...... Mount base 85 …… Upper base, 86 …… Electromagnet 87 …… Counter weight 88a, 88b …… Leaf spring 89 ...... side cover 90 ...... aligning feeder 91 ...... Slide frame 92,93,94,96,97,98,99,100 ...... bis

Claims (1)

[Claims] 1. A vibrating component supply apparatus having the following structures (a) to (k). (A) First trough 19, second trough 20, third trough 21, fourth trough 22, and fifth trough for feeding on the upper surface of a trough base 18 that is slightly vibrated obliquely back and forth by a vibration generator equipped with an electromagnet. Structure with 23. (B) U-shaped track grooves 19a on the upper surface of the first trough 19, two grooves 20a, 20b on the upper surface of the second trough 20, and four grooves 21a, 21b on the upper surface of the third trough 21. , 21c, 21d formed structure. (C) Even number of guide rails for feeding on the upper surfaces of the fourth trough 22 and the fifth trough 23 on the same line as the grooves 21a, 21b, 21c, 21d of the third trough and slightly lower than the grooves. 27a, 27
Structure with b, 27c and 27d. (D) Front guide rails 27a, 27b, 27 of the fourth trough 22
A hole 29a is formed between c and a hole 29b is also formed beside the guide rails 27a and 27d, and a cavity 30 for removing the component 28 is provided under these holes 29a and 29b. The trough base 18 is provided with a side slope 31, and the component 28 dropped into the cavity 30 through the holes 29a and 29b is discharged to the return feeder 32, and the return feeder 32 is moved in the opposite direction to the trough base by the reverse feeding vibration generator 33. A structure that allows for slight vibration. (E) A hopper 35 is provided on the first trough 19, and pedestals 40a, 40b for leaf springs are provided on the left and right side surfaces of the lower portion of the hopper 35.
The front and rear leaf springs 38a, 38b and the leaf springs 39a, 39b are respectively fixed to the pedestals 40a, 40b, and the metal fittings 41a are attached to the lower portions of the leaf springs 38a, 38b and the lower portions of the leaf springs 39a, 39b. The metal fittings 41b are attached respectively, and the tray 42 is tilted forward by the metal fittings 41a and 41b, and the pedestal 44 is fixed between the side plates 43a and 43b installed at the rear of the hopper 35. A structure of a vibrating device in which an electromagnet 45 facing the mover 46 attached to the rear surface of the tray 42 is fixed to the front surface. (F) A rail mounting base 55 is provided at the front end of the trough base 18 so as to be orthogonal to the trough, and the rail fixed on this base 55.
56, slide piece 5 fixed to the bottom surface of both ends of the shutter 54
The structure of the first confluence portion 48 in which the shutters 54 can be slid in the left-right direction (direction orthogonal to the trough feeding direction) by fitting 8,58. (G) Depressions 60a, 60b, 60c, 60d on the upper surface of the shutter 54
In addition, relay guides 61a, 61b, 61c, 61d, which are projections having the same height and the same shape as the guide rail 27 of the trough, are provided in the center of each recess, and the relay guides 61a, 61c are provided.
Is on the same line as the guide rails 27a, 27c of the trough, but the relay guides 61b, 61d are on the extension lines of the guide rails 27a, 27b and the guide rails 27c, 27d, and between the guides 61a and 61b, The distance between 61c and 61d should be
The structure is such that L / 2 is the distance between a, 27b, 27c, and 27d. (H) A cylinder device 62 is attached to one end of the rail mount 55, and the shutter 54 is connected to the relay guides 61a and 61 when the plunger rod of the cylinder 62 device is operated as described above.
While c is aligned with the guide rails 27a and 27c, the relay guides 61b and 61d are located between the guide rails 27a and 27b, respectively.
It is located between 7c and 27d, and the relay guides 61b and 61d are aligned with the guide rails 27b and 27d by the retracting operation of the plunger rod, while the relay guides 61a and 61c are located between the guide rails 27a and 27b and 27c and 27c, respectively. A structure that can be reciprocated so that it can be positioned between 27d. (I) A stopper plate 69 whose lower portion is attached to the rail mount 55 is provided at the discharge-side front end of the shutter 54, and the guide plates 27a and 27b of the fifth trough 23 are provided on this stopper plate 69.
, A structure in which notches 69a, 69b for passing parts are formed at portions corresponding to respective central extension lines between 27c and 27d. (J) On the second trough base 51 that is slightly vibrated obliquely back and forth by the second vibration generating device 49 having the electromagnet 86,
A structure in which a first discharge trough 65, a second discharge trough 66, and a second discharge trough 67 are sequentially attached to the first merge section 48. (K) Two guide rails 68a, 68b are provided on the upper surface of the first discharge trough 65 so as to be continuous with the cutouts 69a, 69b of the stop plate, and the second merging portion 66 is provided with the first merging portion 48.
Similarly, the slide pieces 91, 91 fixed to the shutter 74 that reciprocally slides are fitted to the rail 71 on the rail base 70, and the plunger rod 72a of the cylinder device 72 attached to the rail base 70 is attached to one end of the shutter 74. Similar to the shutter 54, two recesses 76a, 76b provided with relay guides 75a, 75b each made of a protrusion are provided at an interval L on the upper surface of the shutter 74 so as to prevent the rail base 70 from being discharged. A stopper plate 77 having a notch 70a coinciding with the center line of the guide rails 68a, 68b is attached to the side surface, and the notch 77a of the stopper plate 77 is provided on the second discharge trough 67 following the second joining portion 66. A structure with a guide rail 78 continuous with.