JPH03256922A - Transfer device for lightweight object - Google Patents

Abstract

PURPOSE:To prevent an object from staying around a side wall by pushing and returning the object toward the inner side of a transfer surface by air current s jetted from a plurality of apertures parallel to the lower edge of the side wall and inclined along the transfer direction and toward the inner side of the transfer surface for transferring it. CONSTITUTION:An air current V1 jetted from a circular blow hole 9 is applied to the bottom of an aluminum wash can guided to a transfer surface 4 to float the can. An air current V2 supplied from a drive blow hole 10 is jetted in the transfer direction of the can at an inclined upward angle B' to feed the can forward. A hole 11 is inclined at a proper angle less than alpha to the transfer direction A of the can from the direction B from both side walls 6 toward the transfer surface, and an air current V3 is jetted in this direction X. The direction X refers to that in the horizontal surface, and its vertical direction is at a diagonally upward angle less than B, so a force to push the can to the inner side of the transfer surface 4 is given to the bottom surface of the can, thereby the can is transferred to reach the final end of the transfer surface without staying around the side wall 6.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a conveying device for lightweight objects, and more specifically,
This invention relates to a conveying device for lightweight objects, such as aluminum wash cans, which is used to transfer a plurality of lightweight objects, such as aluminum wash cans, on a conveying surface of the device by applying an air flow to the conveying surface and then pass them on to the next process.

[Conventional technology]

2. Description of the Related Art Conveying devices (so-called air conveyors) for conveying a large number of lightweight objects such as aluminum wash cans in an upright state in a substantially horizontal direction are conventionally known.

As shown in FIG. 3, this conventional transfer device (101) has an object transfer chamber (102) inside which an object (102) is transferred.
103) and a pressurized air chamber (104) for supplying an air flow (V) for driving the object (102) in the transport direction (A) to the object transport chamber (103).

The object transfer chamber (103) has a cover (103) above it.
03a), and is supplied from the pressurized air chamber (104) to almost the entire surface of the conveying surface (105) on which the lightweight object (102) moves, while floating the object (102) upward in the conveying direction ( A) Air flow (V
) was provided with an opening (106) for spewing out.

Such a conventional transport device (101) was certainly useful in that it enabled the transport of lightweight objects (102).

[Problem to be solved by the invention]

However, in the conventional transfer device (101), the transfer chamber (1
There was a problem in that the object (102a) near the side wall (107) of 03) did not move and remained in place.

That is, the object transfer chamber (103) includes a pressurized air chamber (10
4) through the opening (106), and the air pressure is higher than the outside of the transfer chamber (103), so the object (102) is moved around the outer circumference by the action of the internal pressure. It is pressed against the side wall (107) that forms part of it. The object (102a) pressed against the side wall (107) of the transfer chamber (103) does not move forward (A) due to resistance due to friction with the side wall (107).
) near the edge, and the object (10
Only the transfer of 2b) was carried out.

In order to solve this problem, there is a method in which a plurality of ventilation holes (not shown) are provided in the side wall (107) itself, and air is blown out from the ventilation holes toward the inside of the transfer chamber (103). However, according to this method, the side wall (
A new pressurized air chamber must be installed outside of the object (107), and the air flow is not at the bottom of the object (102).
102), so contrary to the request to transport the object (102) without overturning it,
02) had the disadvantage that it was easy to lose balance and fall over.

SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a transport device for lightweight objects that does not cause stagnation of the transported object in the transport chamber.

[Means to solve the problem]

In order to achieve the above object, the present invention takes the following technical measures. That is, in a lightweight object transporting device that transports a plurality of lightweight objects by airflow along a transporting surface having a pair of side walls on both sides thereof, the transporting surface extending in the transporting direction of the objects, the pair of side walls and an object transport chamber whose outer wall is defined by a cover having an airflow outlet provided above the transport surface, and a compressed air source extending in the object transport direction on the lower side of the transport surface. a pressurized air chamber having a connection means to the conveyance surface; and a supply means for a driving air flow opened from the pressure air chamber to the conveyance surface in order to drive the object in the conveyance direction; An opening communicating from the pressurized air chamber to the transfer chamber is provided near a side wall of the transfer surface and is inclined at an appropriate angle from inside the transfer surface toward the transfer direction of the object so as to cause an air flow inward. is provided substantially parallel to the lower edge of the side wall, and the object is transferred in the conveying direction by causing an air flow to act on the object from the pressurized air chamber through the opening provided in the conveying surface. It was decided to.

Further, the driving air flow supplying means is provided on the conveying surface substantially perpendicularly to the conveying surface or inclined toward the conveying direction of the object, and includes a plurality of airflow chambers communicating from the pressurized air chamber to the conveying chamber. The object may be an opening, and an air flow may be applied from the opening to the bottom surface of the object upwardly or in the conveyance direction.

Further, the inclination angle of the opening may be such that the center angle thereof is in a range of approximately 0° to 60° from the inside of the transporting plane toward the transporting direction of the object.

[Effect]

Since the present invention has the above configuration, the object that is about to be pressed against the side wall of the object transfer chamber is placed in a container that is provided substantially parallel to the lower edge of the side wall and is inclined toward the transfer direction or inward of the transfer surface of the object. Since the air flowing from the pressurized air chamber to the transfer chamber blows out from the plurality of openings and is pushed back toward the inside of the transfer surface while being sent in the transfer direction, it is possible to prevent objects from stagnation near the side wall.

Furthermore, assuming that the inclination angle of the opening is within the range of about 06 to 60° from the inside of the conveyance plane toward the conveyance direction of the object, the internal pressure of the conveyance chamber that is about to be pressed against the side wall and the conveyance The driving force of the airflow trying to be pushed back inward can be appropriately balanced.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show a case in which the lightweight object conveying device according to the present invention is used for aluminum wash cans. However, the present invention is not limited to this example and can be applied to any object that can be conveyed by applying an air flow. For example, a plastic bottle etc. are mentioned.

As shown in the figure, the conveyor device (1) for aluminum wash cans carries cylindrical aluminum wash cans (2) upright in close proximity to each other in an object conveyance chamber (3). 2) Conveying direction (
Transport to A). At this time, the conveyance surface (4) does not necessarily have to be horizontal, and may be provided with a slight inclination.

The object transfer chamber (3) includes a lower plate (5) whose upper surface is the transfer surface (4), and side plates (7) forming side walls (6) on both sides of the transfer surface (4).
a) Its outer wall is constituted by a cover (8) provided above the transport surface (4).

The can (2) is placed on the conveying surface (4) in the conveying direction (
Openings (9) (10) are provided for supplying a driving air flow (Vl) (V2) to A).

The air flow (
1 (V2) on the can (2), the front (A
). In this embodiment, the following two types of holes are provided as the openings (9) and (10) constituting the drive air flow supply means, as shown in an enlarged perspective view in FIG.

The first hole is a circular ventilation hole (9) for lifting the can (2) vertically upward, and is bored almost perpendicularly to the bottom plate (5). (2) in the transport direction (
In the driving air hole (10) for driving the can (2), the lower plate (5) is tilted so that the air flow (v2) is blown obliquely upward in the conveying direction (A) of the can (2). It is provided.

These holes (9) (10) are uniformly provided over almost the entire surface of the conveyance surface (4).

The positions of the holes (9) and (10) can be set arbitrarily depending on the shape, weight, etc. of the object (2), but in this example, the circular ventilation holes (9) and the driving ventilation holes (10) are arranged in the device. (1)
Alternating rows approximately parallel to the side walls (6) of the.

In addition, as an opening to prevent the can (2) from stagnation near the side wall (6), there is an opening near the side wall (6) of the transfer surface (4) that is pressed against the side wall (6) by the internal pressure of the transfer chamber (3). An opening (11) for preventing stagnation is provided in order to push the can (2) which is about to be carried back into the conveying surface (4) (B).

This opening (11) is formed in the vicinity of the side wall (6) of the conveyance surface (4) and is substantially parallel to the side wall (6). 11) are provided in two rows. As shown in FIG. 2, the perforations (11) are formed from the inside of the conveying surface (4), that is, from the both side walls (6) toward the conveying surface (B), toward the conveying direction (A) of the can (2). It is tilted at an appropriate angle (2α; the angle of inclination expressed by the central angle formed by the vectors in both directions B and X), and an air flow (v3) is ejected in this direction (X). The direction (X) is on the horizontal plane, but the direction in the vertical direction is necessarily diagonally upward (Zβ above the horizontal plane).

The inclination angle Zα is preferably in the range of 0 to 60°, particularly 3
It was optimal to set it to 0°.

Further, the openings can be implemented as slits (not shown) provided substantially parallel to the side wall (6) instead of the plurality of perforations (11) as described above. A slit is formed in the vertical section of the bottom plate (5) from the opening on the bottom side (12) provided close to the side wall (6) to the opening on the inner side of the conveying surface (4).

Incidentally, the inclination angle Zα in this case corresponds to 0°,
The air flow is from the opening of the conveying surface (4) to the inside of the conveying surface (4) (B
It ejects diagonally upward (Zβ upward from the horizontal plane) in the direction of

The cover (8) covering the upper part of the transfer chamber (3) has a cover (8) that covers the top of the transfer chamber (3).
3) are drilled with a plurality of outlets (13) for discharging the air flows (vl) (V2) (v3) supplied to the pipes.

The opening ratio of the outlet (13) (the ratio of the outlet (13) to the surface area of the cover (8)) is determined by the amount of air supplied to the transfer chamber (3),
In the case of 2), about 9 to 14% was preferred.

In this example, circular holes (13) with a diameter of 20 mm were distributed in a mesh pattern with a center-to-center distance of 49 o+m between adjacent holes (13). The aperture ratio is 13°8%.

A pressurized air chamber (14) is installed below the object transfer chamber (3) via a bottom plate (5) along the conveyance direction (A) of the can (2). This pressure air chamber (14) is connected to the conveying surface (4).
) each opening (9) (10) (11) ! , :
Each of them is for supplying a uniform air flow (V,) (V2) (V,), and is partially equipped with a connection means (16) to a compressed air source (15), and is isolated from the outside. It has space.

Therefore, as long as the above conditions are met, the shape does not matter;
In this embodiment, a bottom plate (5), a lower side plate (7b) extending downward from the above-mentioned side plates (7a), and a bottom plate ( 17
) is constructed by supporting it by a known method.

The bottom plate (17) has a compressed air chamber (14) and a compressed air source (
An air outlet (16) serving as a connection means with the air outlet (15) is open, and the pressure air chamber (14) is connected via this air outlet (16).
Compressed air (v4) is supplied to. Compressed air source (15)
For example, a compressor, a blower, etc. can be used.

Toyoji's work status The equipment for conveying aluminum wash cans with the above configuration (
The operating state of 1) will be explained.

To explain the process step by step, first, the can (2) to be transferred onto the transfer surface (4) of the transfer device (1) according to the present invention.
to guide you. When operating the device (1), the pressurized air chamber (1
4) is connected to a suitable compressed air source (5), and the compressed air (
v4) is supplied, so the transport surface (
Air flow (vl) (V2) (V3) is blown out from each hole (9) (10) and opening (11) of 4). Each of these airflows (v,) (v2) (v
, ), the can (2) is subjected to the following effects.

The air flow (vl) blown out from the circular ventilation hole (9) hits the bottom surface of the aluminum wash can (2) guided to the conveyance surface (4) and acts to lift the can (2) vertically upward. Furthermore, the air flow (v2) supplied from the drive vent (lO) is directed diagonally upward from the conveying surface (4) (Zβ above the horizontal plane) and in the conveying direction (A) of the can (2).
) and the can (2) is sent forward.

Because of these two types of airflow (V, ) (V2), the can (2
) is transferred in a slightly floating state from the transfer surface (4), the sliding frictional resistance with the transfer surface (4) is reduced, and smooth transfer is promoted.

Further, the air flow (v3) ejected from the stagnation prevention opening (11) applies a force to the bottom surface of the can (2) to push it inward of the conveying surface (4).

In this way, the can (2) is conveyed in a negative manner without being stagnated near the side wall (6), and as shown in FIG. ) is passed on to the next process.

Examples of the next step include, for example, an object alignment device (so-called single filer) (19).

The cans (2) supplied by this conveyance device (1) are transported by a conveyance direction changing device (so-called waterfall').
(20), the conveyance direction of which is changed by approximately 90' and supplied to the object alignment device (19), which is then supplied to the object alignment device (19).
19), they are arranged in - columns and sent to the next process.

〔Effect of the invention〕

This invention has the above-mentioned configuration, and the object that is about to be pressed against the side wall of the object transfer chamber is pushed back inward of the transfer surface by the air flow blown out from the stagnation prevention opening in the transfer direction. Since the object is fed, it is possible to prevent the object from stagnation near the side wall, and it is possible to provide a transport device for a lightweight object in which the object does not stagnate in the transport chamber.

In addition, the central angle of the inclination angle of the stagnation prevention opening is approximately 0° to 6°.
If it is within the range of 0°, it is possible to more efficiently prevent objects from stagnation near the side wall.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view showing an embodiment of a lightweight object conveying device according to the present invention, FIG. 2 is an enlarged perspective view of the main part of FIG. 1, and FIG. 3 is a conventional lightweight object conveying device. FIG. 4 is a perspective view showing a state in which the conveyance device is connected to a conveyance direction changing device and an object alignment device. (1) ... Conveyance device for lightweight objects

Claims (1)

[Scope of Claims] 1. In a lightweight object conveyance device that conveys a plurality of lightweight objects by air flow along a conveyance surface having a pair of side walls on both sides, the conveyance device extends in the conveyance direction of the objects. an object transport chamber whose outer wall is defined by a cover provided above the transport surface and having an airflow outlet; a pressurized air chamber having connection means to a source of compressed air present in the object; and means for supplying a driving air stream opening from the pressurized air chamber to the conveying surface for driving the object in the conveying direction; In order to cause an air flow to act diagonally inward on the conveyance surface on the bottom surface of the conveyance surface, the pressure air chamber is tilted at an appropriate angle from the inside of the conveyance surface toward the conveyance direction of the object near the side wall of the conveyance surface. An opening leading to the transfer chamber is provided approximately parallel to the lower edge of the side wall, and an air flow is applied to the object from the pressurized air chamber through the opening provided in the transfer surface, thereby moving the object in the transfer direction. 1. A transport device for a lightweight object, characterized in that it is configured to transport a lightweight object. 2. The driving air flow supplying means according to claim 1 is provided on the conveying surface substantially perpendicular to the conveying surface or inclined toward the conveying direction of the object, from the pressurized air chamber to the conveying chamber. 2. The apparatus for transporting a lightweight object according to claim 1, further comprising a plurality of openings communicating with the object, and an air flow acting from the openings on the bottom surface of the object upwardly or in the transporting direction. 3. The inclination angle of the opening according to claim 1 is such that the central angle thereof is approximately 0° to 6° from the inside of the conveying plane toward the conveying direction of the object.
3. The apparatus for transporting lightweight objects according to claim 1, wherein the angle is within a range of 0°.