JP7705290B2 - Vibration feeder - Google Patents

Description

The present invention relates to a vibrating feeder, and more specifically to a vibrating feeder that transports objects by vibration.

Conventionally, bowl-type vibratory feeders have been used as a means of aligning and feeding parts in the manufacturing processes of various products such as electrical appliances, automobiles, equipment, and tools. Bowl-type vibratory feeders are equipped with a parts-containing bowl with a spiral conveying path formed on its inner circumference, and a vibration unit that vibrates the bowl in the circumferential direction. Multiple parts fed into the bowl are aligned in a row as they move along the spiral conveying path due to the vibrations from the vibration unit, and are then discharged from the discharge outlet and supplied to the next process.

However, if the parts are tangled or if a mass of multiple parts combined together due to being wrapped around each other is present in the parts storage bowl, it is necessary to remove the mass during the transport process in the feeder and to disassemble and separate the massed parts into individual parts.

Research and development is being conducted on vibrating feeders that can disassemble and separate parts that have become lumps during the conveying process without removing such lumps, and various feeders have been proposed, for example, as shown in Patent Documents 1 to 3.

JP 2007-091384 A JP 2012-225542 A JP 2019-119603 A

The present invention was made in consideration of the above circumstances, and aims to provide a vibrating feeder that can separate a mass of multiple transport objects during the transport process.

The device of the present invention which has been able to solve the above problems has the following configuration.
[1] A vibrating feeder that conveys a plurality of conveying objects,
The vibrating feeder comprises:
A storage section for the object to be transported;
A conveying path provided outside the storage unit;
a vibration unit that vibrates the storage unit and the transport path,
The storage section includes:
The bottom and
A wall provided along an outer periphery of the storage portion;
a first discharge port for sending the object to be transported to the transport path,
The outlet is provided on a part of the outer periphery of the storage portion,
The transport path is
The bottom and
A wall provided along an outer periphery of the transport path;
A second discharge port for the object to be transported,
a bottom of the transport path is provided at a position lower than the first discharge opening so that the object discharged from the first discharge opening falls to the bottom of the transport path; and
A vibrating feeder in which the bottom of the transport path is formed in an inclined state such that the outer side is lower than the storage section side.

[2] The vibrating feeder described in [1], in which the bottom of the storage section is formed in a cone shape that slopes downward from the center outward.

[3] The vibrating feeder according to [1] or [2], wherein the storage section is provided with a conveying path that is arranged to rise in a spiral shape from the bottom of the storage section to the first discharge port along the inner circumference of the storage section wall, and is formed in an inclined state with the outer circumference side lowered.

[4] The vibrating feeder further includes a discharge conveying path for the object to be conveyed from the second discharge port, and a vibrating unit that vibrates the discharge conveying path,
The longitudinal direction of the discharge conveyance path is provided in a direction intersecting with the second discharge port,
a bottom portion of the discharge conveyance path is provided in the vicinity of the second discharge outlet so that the object to be conveyed out of the second discharge outlet is conveyed into the discharge conveyance path;
The vibrating feeder according to any one of [1] to [3], wherein the bottom of the discharge conveying path is formed in an inclined state such that the outer side is lower than the second discharge opening side.

[5] The vibrating feeder according to any one of [1] to [4], wherein the discharge conveying path has a third discharge outlet at one end side in the longitudinal direction, and the longitudinal direction of the discharge conveying path is formed in an inclined state with the third discharge outlet side being higher.

The vibrating feeder of the present invention can disassemble a mass of multiple transport objects during the transport process and separate it into individual transport objects. Therefore, there is no need to remove the lumps during the transport process and disassemble the lumps. Furthermore, the vibrating feeder of the present invention can supply the transport objects in a single row to the next process even if they contain lumps when supplied.

FIG. 1 is a schematic plan view of a vibrating feeder according to the present invention as seen from above. FIG. 2 is a schematic perspective view seen from the direction A in FIG. FIG. 3 is a schematic side view seen from the direction A in FIG. FIG. 4 is a schematic side view seen from the direction B in FIG. Figure 5(a) is a schematic side view of a portion viewed from direction B in Figure 1, and (b) is a schematic plan view in which the movement direction of the object to be transported on the second transport path (near the discharge outlet) and the movement direction of the object to be transported on the third transport path are plotted on the same plane when viewed from above. FIG. 6 is a schematic cross-sectional view of part C in FIG. 7A is a schematic cross-sectional view of part D in FIG. 1, and FIG. 7B is a schematic partial side view seen from the direction A in FIG. 8A is a schematic perspective view of the third transport path, FIG. 8B is a schematic cross-sectional view of FIG. 8A, and FIG. 8C is a schematic side view of the third transport path in the longitudinal direction as viewed from the direction of FIG. 1B. FIG. 9A is a schematic plan view of the second transport path and the third transport path as viewed from above, and FIG. 9B is a schematic side view as viewed from a direction E in FIG.

Hereinafter, the configuration of a vibrating feeder according to the present invention will be described with reference to the drawings 1 to 9.
The vibrating feeder 1 of the present invention comprises a storage section 2, a conveying path (hereinafter referred to as a second conveying path 4) provided outside the storage section 2, and a vibrating section 3 that vibrates the storage section 2 and the second conveying path 4.
Due to the vibration from the vibration unit 3, the transport object 5 in the storage unit 2 gradually moves from the bottom center 6a side to the outer periphery, and then gradually moves along the first transport path 8 toward the first discharge opening 9. After reaching the first discharge opening 9, the transport object 5 loses balance and falls from the first discharge opening 9 into the second transport path 4 provided outside the storage unit 2. The clumped transport object 5 becomes unraveled and separated while falling, or due to the impact with the second transport path 4 after falling. The transport object 5 on the second transport path 4 then moves to the second discharge opening 11 due to the vibration from the vibration unit 3, and is discharged from the second discharge opening 11.

Vibration unit 3
The vibrating unit 3 is configured to torsionally vibrate the storage unit 2 with a predetermined amplitude. The storage unit 2 is fixed to the vibrating unit 3 by inserting a bolt (not shown) through the bottom center 6a, and vibrates in the circumferential direction around the central axis with a predetermined period and a predetermined amplitude. The vibration is controlled by a control device (not shown).
The vibrating section 3 is a means for transmitting vibrations of a predetermined period to the storage section 2 and the second conveying path 4, and various known vibrating devices for bowl-type vibrating feeders can be used as the vibration generating device. The vibrating means is not limited either, and any vibrating means employed in bowl-type vibrating feeders can be used, such as a vibrating means that converts the vibration into vibration via a displacement cam mechanism of an electromagnet, a piezoelectric element, a solenoid actuator, or a fluid pressure actuator.
By vibrating the storage section 2 by applying vibration from the vibration section 3 , the transport object 5 in the storage section 2 moves in a fixed direction toward the first discharge port 9 and is carried out from the first discharge port 9 .
Similarly, by vibrating the second conveying path 4 by vibration from the vibration section 3, the object to be conveyed 5 in the second conveying path 4 moves in a fixed direction toward the second discharge outlet 11, specifically in the same direction as the object to be conveyed 5 in the storage section 2, and is discharged from the second discharge outlet 11.

Storage section 2
The container 2 has a bottom 6 , a wall 7 , and a first outlet 9 .
The wall 7 is provided along the outer periphery of the bottom 6, and the object 5 to be transported is accommodated in the accommodation section 2 constituted by the bottom 6 and the wall 7. The height of the wall 7 can be set to any height, but it is preferable to set the height so that the object 5 to be transported that is bounced up by the vibration from the vibration section 3 does not exceed the upper end of the wall 7 and go outside the accommodation section 2.
The first discharge port 9 is provided on a part of the outer periphery. The transport target object 5 that has reached the first discharge port 9 due to vibration from the vibration unit 3 is discharged from the first discharge port 9 to the second transport path 4 provided outside the storage unit 2.

In a preferred embodiment of the storage section 2, the bottom 6 of the storage section 2 is formed in a conical shape with the center 6a at the highest position and sloping downward from the center 6a in an outward direction, i.e., toward the wall 7. The slope 6d (FIG. 6) is not particularly limited, and it is sufficient if the transported object 5 can be moved outward (toward the periphery) by vibration.
The storage section 2, which is composed of the bottom 6 and a wall 7 provided along the outer periphery of the bottom 6, is bowl-shaped and can store the object 5 to be conveyed inside the storage section 2. The storage section 2 may be a cylindrical bowl with the wall 7 standing vertically, or may be a conical bowl with the upper side of the wall 7 widening outward. The storage section 2 can use the bowl of an existing parts feeder.
The first discharge port 9 is provided in a part of the outer periphery, and is preferably provided in the wall 7. The installation height of the first discharge port 9 is not particularly limited, but when a first transport path 8 described later is provided, it is preferable to provide the first discharge port 9 at a position higher than the vicinity of the outer periphery of the bottom 6.

A first transport path 8 is preferably provided on the outside of the storage section 2, and is provided along the inner circumference of the wall 7 so as to connect seamlessly from the bottom 6 of the storage section 2 to the first discharge port 9. The first transport path 8 is preferably provided so as to ascend in a spiral shape along the inner circumference of the wall 7 from the bottom 6 to the first discharge port 9.
The inclination of the spiral of the first transport path 8 may be such that the object 5 can be moved upward by vibration. The gentler the inclination of the spiral, the easier it is to move the object 5 toward the first discharge port 9 by vibration.

Further, the first transport path 8 is formed in an inclined state in which the side of the wall 7 of the storage section 2 is lower when viewed in the width direction (FIG. 6).
The first transport path 8 is inclined so that the wall 7 side is lower, and the objects 5 to be transported on the first transport path 8 are moved toward the first discharge port 9 while being uniformly aligned in a substantially straight line on the wall 7 side by vibration.
The width of the first transport path 8 may be appropriately set according to the object 5 to be transported, and is preferably set to a width that prevents the object 5 from protruding from the first transport path 8. The inclination 8d (FIG. 6) in the width direction of the first transport path 8 is not particularly limited, and may be such that the object 5 to be transported can move as described above.

Second conveying path 4
A second conveying path 4 is provided outside the storage section 2, and the bottom 4b of the second conveying path 4 is located at a lower position than the first discharge outlet 9 so that the transport object 5 discharged from the first discharge outlet 9 falls to the bottom 4b of the second conveying path 4.
A wall 4c is provided along the outer periphery of the bottom 4b of the second transport path 4 on the side opposite to the storage section 2 side.
Furthermore, the bottom 4b is formed in an inclined state such that the outer side (wall 4c side) is lower than the storage section 2 side (wall 7 side) (FIG. 7a). By inclining the second transport path 4 outward, the objects 5 to be transported are moved to the second discharge port 11 while being substantially leveled in a line in contact with the bottom 4b and the wall 4c by the vibration from the vibration unit 3.

The second conveying path 4 is preferably provided on the outside of the storage section 2, i.e., along the outside of the wall 7, and this configuration allows the vibration from the vibration section 3 to be used to move the object 5 transferred to the second conveying section 4 toward the second discharge port 11. In this configuration, the direction of movement of the object 5 moving on the second conveying path 4 is the same as the direction of movement of the object 5 moving within the storage section 2, so the second discharge port 11 needs to be provided downstream in the direction of movement.

The second conveying path 4 is provided outside the storage section 2, and it is more preferable that the end 4a of the second conveying path 4 on the storage section 2 side is provided in contact with the storage section 2. When the end 4a of the second conveying path 4 on the storage section 2 side is in contact with the storage section 2, the second conveying path 4 can be vibrated together with the storage section 2, and the conveyed object 5 discharged from the first discharge port 9 can be transported without departing from the second conveying path 4 system. Note that, as long as the vibration from the vibration unit 3 can be transmitted to the second conveying path 4, the second conveying path 4 may be provided at a location other than the storage section 2, for example, in contact with the outer periphery of the vibration unit 3.

The second transport path 4 is located at a lower position than the first discharge port 9. The object 5 discharged from the first discharge port 9 falls substantially vertically and moves to the second transport path 4.
The impact of the drop causes the lump to separate. That is, the lump, which was formed by combining a plurality of individual pieces, is disassembled into individual objects 5 to be transported due to the impact of the collision with the bottom 4b.
In this case, the greater the height from the bottom surface 4b of the second conveying path 4 to the first discharge outlet 9, the greater the impact the lumps receive when they fall and collide with the bottom surface of the second conveying path 4, and the greater the effect of breaking down the lumps.
The height h (FIG. 7b) from the second transport path 4 to the first discharge port 9 may be set so as to obtain the effect of breaking down the lumps according to the type and size of the transport object 5. For example, the height h may be preferably at least two times, more preferably at least three times, the size of the largest transport object 5 among the individual transport objects 5 that are not lumps. The upper limit of the height h differs depending on the transport object 5, but the height h may be set so as not to cause the transport object 5 to bounce up and deviate from the second transport path 4 after falling, and for example, the height h is not more than five times the size of the transport object 5. The size of the transport object 5 is the maximum length of the transport object 5 (hereinafter, sometimes referred to as the maximum diameter).

The bottom 4b of the second transport path 4 is formed in an inclined state in which the outer side (the side opposite to the storage unit 2) is lower in the width direction than the storage unit 2 side. Specifically, when viewed in a radial cross section, the bottom 4b of the second transport path 4 is formed in an inclined state in which the outer side (the wall 4c side) is lower with respect to the horizontal plane than the storage unit 2 side (FIG. 7a).
For example, the inclination 4d of the bottom 4b of the second transport path 4 is preferably 5° or more and 30° or less with respect to the horizontal. If the inclination 4d of the bottom 4b is too small, the interlocked lumps formed may not be broken down, or even if they are broken down, multiple transport objects 5 may not be aligned in a line in the traveling direction. If the inclination 4d of the bottom 4b is too large, the impact of the fall may be mitigated and the lumps may not be broken down, or even if they are broken down, they may slide out of the second transport path 4 too quickly and combine with other transport objects 5 moving on the second transport path 4 to form new lumps.

If the width of the second conveying path 4, i.e., the width from the wall 4c side of the second conveying path 4 to the end 4a side of the storage section 2, is too narrow, the objects 5 to be conveyed that have fallen and separated may come into contact with other objects 5 to be conveyed on the second conveying path 4, forming new lumps. Therefore, the width of the second conveying path 4 is preferably made wider according to the size of the objects 5 to be conveyed so that such lumps do not form, and may be wider than the width of the first conveying path 8, for example. Alternatively, the width of the second conveying path 4 may be, for example, preferably greater than the maximum diameter of the objects 5 to be conveyed, more preferably greater than 1.5 times the maximum diameter, and preferably less than 4 times the maximum diameter of the objects 5 to be conveyed, more preferably less than 2 times the maximum diameter.

When viewed in the longitudinal direction, the second transport path 4 may be horizontal from the first discharge port 9 side to the second discharge port 11 side, or may be inclined to one side.
In the illustrated example, the second transport path 4 is not sloped, but is formed substantially horizontally from the start end to the end end (FIG. 3). When the second transport path 4 is formed horizontally, the thrust force required to move the transport object 5 is small, so that the transport object 5 can be moved smoothly toward the second discharge port 11 compared to when a slope is provided.

The transport object 5 discharged from the second discharge port 11 may be supplied to another process, but it is preferable to further supply the transport object 5 discharged from the second discharge port to a discharge transport path (hereinafter referred to as a third transport path 12). Supplying the discharged transport object 5 to the third transport path 12 allows an appropriate interval to be provided between the transport objects 5. The third transport path 12 is preferably a linear feeder that linearly transports the transport object 5. When a linear feeder is used for the third transport path 12, it is preferable to provide a vibration unit 14 different from the vibration unit 3 because the vibration direction required for moving the transport object 5 is different from that of the second transport path 4. The vibration unit 14 is only required to apply vibration that moves the transport object 5 in one direction, and a known vibration unit for a linear feeder can be used.
Therefore, it is preferable that the vibrating feeder 1 of the present invention further includes a third transport path 12 and a vibrating unit 14 that vibrates the third transport path 12.

The longitudinal direction of the third transport path 12 is preferably provided in a direction intersecting with the second discharge port 11. By providing the third transport path 12 so that the moving direction 15b of the objects 5 on the third transport path 12 intersects with the moving direction 15a of the objects 5 on the second discharge port on the same plane as viewed from above (FIG. 5b), the interval between the objects 5 supplied from the second discharge port 11 can be maintained.
When the longitudinal direction of the third conveying path 12 is the same as that of the second discharge outlet 11, i.e., when the movement direction of the transported object 5 is the same (both in the direction 15a), the transported object 5 supplied from the second discharge outlet 11 may overlap with the transported objects 5 supplied before and after it, forming a lump, or the distance between the transported objects 5 may not be maintained.

It is preferable that the bottom 12b of the third transport path 12 is provided near the second discharge opening 11 so that the transport object 5 discharged from the second discharge opening 11 is transported into the third transport path 12. Specifically, it is preferable to adjust the positional relationship between the third transport path 12 and the second discharge opening 11 so that the transport object 5 discharged from the second discharge opening 11 does not deviate from the third transport path 12.

The height h2 (FIG. 5a) between the bottom 12b of the third conveying path 12 and the second discharge port 11 is not particularly limited, and a height difference may be provided, or the height difference may be eliminated. If a height difference is provided, any lumps remaining can be broken down. When a height difference is provided, if the height h2 between the bottom 12b of the third conveying path 12 and the third discharge port 13 is too high, the conveying object 5 may bounce on the third conveying path 12 and the conveying objects 5 may overlap with each other to form lumps. Therefore, it is preferable that the height h2 between the bottom 12b of the third conveying path 12 and the second discharge port 11 is as low as possible. For example, it is preferable that the height h2 between the second discharge port 11 and the bottom 12b of the third conveying path 12 is set to a height that does not allow the two to come into contact with each other due to vibration. It is also preferable to arrange the second discharge port 11 so that a gap is generated between the end of the third conveying path 12 close to the end and the conveying object 5 does not get caught in the gap. For example, when viewed from above, the third transport path 12 (second discharge outlet 11 side) close to the end of the second discharge outlet 11 overlaps the underside of the second discharge outlet 11 so that no gaps are created (Figure 9a), and when viewed from the side (direction E in Figure 9(a)), the height h2 is set so that the second discharge outlet 11 and the third transport path 12 do not come into contact due to vibration (Figure 9b).

In addition, when viewed in a radial cross section, the bottom 12b of the third transport path 12 is preferably formed in an inclined state with the outer side (wall 12c side) lower than the second discharge port 11 side with respect to the horizontal plane (Fig. 8b). When the bottom 12b of the third transport path 12 is inclined, the transport object 5 discharged from the second discharge port 11 moves to the wall 12c side of the third transport path 12, so that it is possible to suppress overlap with other transport objects 5 discharged thereafter. In addition, by inclining the third transport path 12 so that the outer side is lower and providing the wall 12c along the outer side, the transport object 5 moves to the third discharge port 13 while being leveled in a substantially straight line in contact with the bottom 12b and the wall 12c by the vibration from the vibration unit 14. The inclination 12d (Fig. 8b) in the width direction of the third transport path 12 may be set so as to obtain the above-mentioned effect, but for example, it is preferable that it is 5° or more to 30° or less with respect to the horizontal.

Furthermore, the longitudinal direction of the third conveying path 12 may be horizontal from the second discharge port 11 side, i.e., one end side, to the third discharge port 13 side, i.e., the other end side, but it is preferable that the third discharge port 13 side is inclined so that it has an upward gradient (FIG. 8c). By making the moving direction of the conveyed objects 5 an upward gradient, it is possible to provide a gap between the conveyed objects 5. The gap (distance) between the conveyed objects 5 is not particularly limited, but is a gap where the front and rear conveyed objects 5 do not come into contact with each other on the third conveying path 12, and more preferably, is a gap where the conveyed object 5 discharged from the third discharge port 13 to the next process does not come into contact with the conveyed object 5 near the third discharge port 13 behind it. When the other process to which the conveyed object 5 is supplied from the third discharge port 13 is, for example, a conveying process such as a belt conveyor, if the moving speed of the conveyed object 5 supplied to the other process is slow, it may come into contact with the subsequent conveyed object 5 supplied from the third discharge port 13.
The angle 12e of the upward gradient may be appropriately set so as to obtain the above-mentioned effect, but is preferably greater than 0°, and more preferably greater than 1°. Although it depends on the weight of the transport object 5, if the angle 12e of the upward gradient is too large, the moving speed may become too slow, so it is preferably less than 2°.

The length of the third conveying path 12 is not particularly limited, and may be adjusted as appropriate taking into consideration the installation space, the spacing between the front and rear objects 5 to be conveyed, the supply speed, etc. As the length of the third conveying path increases, the spacing between the front and rear objects 5 to be conveyed tends to increase even with the same inclination angle. Therefore, as the length of the third conveying path 12 increases, the supply speed per hour of the objects 5 to be conveyed also decreases.

Transport object 5
The transport object 5 does not constitute the device of the present invention, but is shown in the figure for convenience. A description will now be given of a preferred transport object 5 to be treated in the present invention. Note that the transport object 5 is not limited to the following examples.
The objects 5 to be conveyed in the present invention may have the same shape and size, or may differ from one another in shape and size.
If the object 5 to be conveyed is rod-shaped or has holes, clumps are likely to form regardless of the specific type of object 5 to be conveyed. In particular, if objects 5 to be conveyed differing in shape and size are mixed, the objects 5 to be conveyed tend to combine to form clumps by entangling, embracing, fitting, etc. By using the vibrating feeder of the present invention, the clumps can be disassembled and separated into individual objects 5 to be conveyed.
The vibrating feeder 1 of the present invention may have a device configuration according to the size of the lumps or objects 5 to be conveyed.

The vibrating feeder 1 of the present invention can transport not only parts used in the manufacturing processes of various industrial products, but also various types of waste materials as the objects to be transported 5 .
Examples of parts include fasteners such as screws, bolts, and nuts; electronic parts such as capacitors, coils, and resistors; other various product manufacturing parts; and intermediate manufacturing products.
Examples of waste materials include valuable metal materials such as precious metals, iron, and non-ferrous metals; organic materials such as rubber, plastic, and wood; and inorganic non-metallic materials such as glass, silicon, and ceramics. The waste materials may be pretreated by melting, burning, physical sorting, etc. Specific examples of waste materials include the above-mentioned parts, as well as jewelry such as rings, dental filling waste, etc.

1 Vibration feeder 2 Storage section 3 Vibration section 4 Second conveying path 4a End of second conveying path on storage section side 4b Bottom 4c of second conveying path Wall 4d of second conveying path Slope of second conveying path 5 Conveyed object 6 Bottom 6a Bottom center 6d Slope of bottom of storage section 7 Wall 8 First conveying path 8d Slope of first conveying path 9 First discharge port 10 Insertion hole 11 Second discharge port 12 Third conveying path 12b Bottom 12c of third conveying path Wall 12d of third conveying path Width direction gradient 12e of third conveying path Upward gradient 13 of third conveying path Third discharge port 14 Vibration section 15a, 15b Movement direction h, h2 of conveyed object Height

Claims (5)

A vibrating feeder that conveys a plurality of conveying objects,
The vibrating feeder comprises:
A storage section for the object to be transported;
A conveying path provided outside the storage unit;
a vibration unit that vibrates the storage unit and the transport path,
The storage section includes:
The bottom and
A wall provided along an outer periphery of the storage portion;
a first discharge port for sending the object to be transported to the transport path,
The outlet is provided on a part of the outer periphery of the storage portion,
The transport path is
The bottom and
a wall provided along an outer periphery of a bottom portion of the transport path;
A second discharge port for the object to be transported,
a bottom of the transport path is provided at a position lower than the first discharge opening so that the object discharged from the first discharge opening falls directly onto the bottom of the transport path; and
A vibrating feeder in which the bottom of the transport path is formed in an inclined state such that the outer side is lower than the storage section side. The vibrating feeder according to claim 1, wherein the bottom of the storage section is formed in a cone shape that slopes downward from the center outward. The vibrating feeder according to claim 1 or 2, wherein the storage section is provided with a conveying path that is arranged to rise in a spiral shape from the bottom of the storage section to the first discharge port along the inner circumference of the storage section wall, and is formed in an inclined state with the outer circumference side lowered. the vibrating feeder further includes a discharge conveying path for the object to be conveyed from the second discharge port, and a vibrating unit that vibrates the discharge conveying path,
The longitudinal direction of the discharge conveyance path is provided in a direction intersecting with the second discharge port,
a bottom portion of the discharge conveyance path is provided in the vicinity of the second discharge outlet so that the object to be conveyed out of the second discharge outlet is conveyed into the discharge conveyance path;
A vibrating feeder as described in any one of claims 1 to 3, wherein the bottom of the discharge conveying path is formed in an inclined state with the outer side being lower than the second discharge outlet side with respect to the horizontal plane when viewed in the width direction. 5. The vibrating feeder according to claim 4, wherein the discharge conveying path has a third discharge opening at one end side in the longitudinal direction, and the longitudinal direction of the discharge conveying path is formed in an inclined state in which the third discharge opening side is higher.

Images