JPH08104405A - Intermittent feeder of load - Google Patents

Abstract

PURPOSE: To certainly and safely intermittently carry loads one by one in simple working as well as to simplify and thin the structure of an intermittent feeder. CONSTITUTION: A required interval 5 is provided between front and rear carrier means 3b, 3a to carry a load 4 forward. Thereafter, a transfer base 6 an upper surface of which is a carrier surface and is inclined to the front downward is devised to move by a driving means 10 to a retreating rising position a front upper edge of which is positioned above a carrier surface of the carrier means 3a on the rear part and a front upper edge of which is positioned at the equal level of a carrier surface of the carrier means 3b on the front part or below it and to a forwarding lowering position a front upper edge of which is positioned below the carrier surface of the carrier means 3b on the front part and a rear upper edge of which is positioned at the same level of the carrier surface of the carrier means 3a on the rear part or below it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer device for supplying a load from one side and discharging it to the other side in, for example, an assembly line of a factory or a warehouse. The present invention relates to an intermittent feeding device capable of sending a load to a device.

[0002]

2. Description of the Related Art Conventionally, an apparatus of this type is disclosed in, for example, Japanese Utility Model Publication No. 61-3845.

This device is provided with a stopper provided at an end on the carry-out side of the roller conveyor and another stopper which can be moved back and forth for stopping the object to be conveyed behind the stopper, and which is provided at the end on the carry-out side. When an article is unloaded by a stacker crane or the like, the rear stopper is retracted so that the rear article is transported to the front unloading side end.

As another device, Japanese Patent Publication No. 51-12910.
Is disclosed in Japanese Unexamined Patent Application Publication No. 2000-205,878.

In this apparatus, a shelf body and a carry-out frame body in which a large number of rollers are installed side by side are provided in a slanted shape toward the front lower side, and are provided between the shelf body and the carry-out frame body. The carried-out mechanism for carrying out the stored object is carried out.

[0006]

However, in the former device in the above-mentioned conventional example, when the object to be conveyed at the end on the unloading side is carried out, based on the information from the detector that detects this. The rear stopper moves back and the rear transported object moves forward, and the detector detects this to cause the front stopper to project and stop the transported object. If the stopper projects due to a malfunction immediately after passing through the stopper, the transported object may be broken or dropped and the transportation may be hindered.

Further, when the objects to be conveyed are continuously conveyed to each other, after the preceding objects to be conveyed have passed through the rear stopper, the rear stopper is projected to stop the rear objects to be conveyed. In addition, it is necessary to increase the conveying speed of the object to be conveyed in front, which makes the structure of the apparatus complicated and increases the cost.

On the other hand, in the latter storage and unloading device, since the unloading mechanism is turned up and down to sequentially send out the items to be stored, when the rear part of the unloading mechanism is turned upward,
There is a risk of lifting the items to be stored behind. Therefore, by providing an operating rod on the rear shelf to push it down, the above-mentioned drawbacks are solved.

However, in this case, the structure of the carry-out mechanism becomes complicated, and the size in the height direction between the shelves becomes large.
In particular, when arranging multi-tiered shelves vertically on the carry-out device, there is a drawback that the storage and carry-out device itself becomes large. Further, if the height of the entire apparatus is limited, the size between shelves becomes large, and the number of shelves is limited.

The present invention has been made to solve the problems of the above-mentioned two conventional examples. The structure is simple and the operation is simplified, so that loads can be reliably carried forward one by one, Further, it is an object of the present invention to provide an intermittent feeding device for a load that can reduce the height dimension of the carrier itself even if the number of shelves of the carrier is multiple, and contributes to cost reduction of the carrier. Is.

[0011]

According to the present invention, the above problems can be solved as follows.

(1) A required space is provided between the transporting means before and after transporting a load forward, and within the space, a movable table whose upper surface, which is a transport surface, inclines forward and downward, and an upper edge of which is a rear edge are provided. The retracted and elevated position, which is located above the transport surface of the rear transport means and whose front upper edge is at the same height as or above the transport surface of the front transport means, and the front upper edge of the front transport means. The movable table is positioned below the transport surface and is movable to the forward descending position where the rear upper edge is at the same height as or lower than the transport surface of the rear transport means, and the movable table is located at both positions. Drive means for reciprocating is provided.

(2) In the above item (1), the distance between the front and rear transportation means is shorter than the front-back length of one load.

(3) In the above item (1) or (2), a plurality of rotatable rollers are provided laterally on the upper surface of the movable table, and the upper surface of the rollers is used as a conveying surface.

(4) In any one of the above items (1) to (3), the front and rear conveying means are roller conveyors forming a fluidized shelf whose conveying surface is inclined forward and downward, and in front of the conveying surface of the movable table. The downward inclination angle is larger than the front downward inclination angle of the transport surface of the fluidized shelf.

(5) In any one of the above items (1) to (4), a pair of front and rear guides inclined forward and downward are provided on each of a pair of left and right guide plates fixed to appropriate fixing portions and facing in the front-rear direction. A pair of front and rear connecting shafts which are provided with holes and which laterally pass through the front and rear guide holes are fixed to the movable table, and one connecting shaft and an appropriate fixed portion are extendable and extendable in the front-rear direction. The ends of the drive means are connected.

[0017]

[Operation] When the movable table is stopped at the forward descending position,
The first load is placed on the moving table, the front end of the load is brought into contact with the rear end of the front transport means and stopped, and the next load is sequentially contacted and arranged after the first load. When the movable table is moved from this state to the retracted and raised position, the first load is sent to the front transport means, and the first load is brought into contact with the rear end of the moved movable table and stopped. After that, when the movable table is moved to the forward descending position again, the second load is brought into contact with the rear end of the front transporting means and stopped, like the first load described above.

[0018]

An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows an intermittent feeding device for a load according to the present invention.
FIG. 3 is a schematic side view of upper, middle, and lower three-level fluidized shelves (3) including (1). (2) is a shelf frame that supports the fluidized shelves (3), and a plurality of horizontal rods (between the pair of right and left columns (2a) standing upright on the floor surface at appropriate intervals in the front-back direction). 2b) are connected together. With this shelf board (2), the rear roller conveyor (conveying means) (3a) and the front roller conveyor (conveying means) (3b) that form the upper, middle, and lower three-level flow shelves (3), A predetermined space (5) is provided in the front-rear direction, and the upper transfer surface is supported so as to incline forward and downward.

On the upper surface of each roller conveyor (3a) (3b), a large number of rollers (22) (see FIGS. 1 to 5) are rotatably provided side by side in an appropriate arrangement. Depending on the top surface,
A conveyance surface is formed to send (4) forward by its own weight.

The above-mentioned interval (5) is slightly smaller than the front-rear length of one load (4).

As shown in FIGS. 2 to 4, in the space (5), a receiving member (7) which inclines forward and downward is provided with a mounting piece (7a) formed at the front and rear ends thereof. The roller conveyor (3a) is provided by being fixed to the lower surface of the rear end portion and the upper surface of the front end portion of the rear roller conveyor (3b).

A pair of left and right guide plates (9a) facing in the front-rear direction are provided on the upper surface of the receiving member (7), each of which is formed with a guide hole (8) which is a long hole in the front and rear portions and is inclined downward toward the front. 9b) is erected.

The front and rear end portions of both guide plates (9a) (9b) are connected by connecting plates (9c) (9d) facing in the left-right direction to form a guide frame (9) having a rectangular shape in plan view.

Guide holes (8) before and after both guide plates (9a) (9b)
A pair of front and rear connecting shafts (16) facing the left-right direction penetrate therethrough. A roller (18) is externally fitted to the guide hole (8) insertion portion of each connecting shaft (16).

Screws (16a) are formed at both ends of the connecting shaft (16), and each screw (16a) has a pair of left and right rails (19), (19) constituting the moving table (6). It penetrates through the through hole (20a) of the support body (20) fixed to the lower surface of the front and rear parts with bolts (21b) and is fastened to the support body (20) with the nuts (21) and (21).

Rollers (22) are provided on both sides of each rail (19) in the same manner as the rollers (22) in the roller conveyors (3a) (3b).
Alternately pivoted.

The movable table (6) is composed of left and right rails (19) and (19) on which rollers (22) are mounted and a connecting shaft for connecting the front and rear portions thereof.
(16) (16) and a stop plate (23) that connects the rear ends of both rails (19) and (19), and the transport surface formed by the upper surface of the roller (22) is the front and rear rollers. The conveyors (3b) and (3a) are always maintained to have a front downward inclination angle larger than the front downward inclination angle of the conveying surface.

Reference numeral (10) is an air cylinder device, which is a telescopic drive means for moving the movable table (6) and is oriented in the front-rear direction. Bracket (11) secured with bolts (12) slightly to the front
It is pivotally attached by a shaft (13) pointing in the left-right direction. At the rear end of the piston rod (10b) extending rearward from the cylinder (10a), there is a shaft hole (14) at the rear part rotatably fitted in the center of the rear connecting shaft (16). The material (15) is firmly attached.

A sleeve (17) for a spacer is provided between the connecting member (15) and each roller (18) on the rear connecting shaft (16).
Also, the left and right rollers (18) (18) on the front connecting shaft (16)
Long sleeves (17 ') for spacers are externally fitted between them.

By extending the piston rod (10b) from the cylinder (10a) of the air cylinder device (10), as shown in FIG.
Also, as shown in FIG. 5 (b), both connecting shafts (16), (16) are moved until they come into contact with the rear upper ends of the guide holes (8), and the moving table (6) is moved.
The roller conveyor (3a) whose upper edge is located above the transport surface of the rear roller conveyor (3a) and whose front upper edge is the front.
It can be located in the retracted and elevated position, which is at the same height as or slightly above the shaft feeding surface of b), and the piston rod (10b).
As shown in FIG. 5 (a), the connecting shafts (16) (16) are moved until they come into contact with the front lower ends of the guide holes (8), and the moving table is moved. The front upper edge of (6) is located below the transport surface of the front roller conveyor (3b), and the rear upper edge is flush with or below the transport surface of the rear roller conveyor (3a). It can be moved to the forward descending position.

(24) is a stop plate provided at the rear end of the front roller conveyor (3b).

Next, the operation of this embodiment will be described.

As shown in FIG. 5 (a), when the movable table (6) is stopped at the forward descending position, the first load (4) is placed on the transfer surface of the movable table (6). Further, the lower part of the front end of the load (4) abuts on the stop plate (24) at the radial end of the roller conveyor (3b) at the front part to prevent the load from moving forward.

The second and subsequent loads (4) placed on the conveying surface of the rear roller conveyor (3a) are brought into contact with the rear surface of the preceding load (4) in sequence and stopped.

From this state, the piston rod (10b) of the air cylinder device (10) is extended, and the movable table (6) is moved to the position shown in FIG.
(b) and when it is moved to the retracted and raised position shown in FIG. 3, in the meantime, first, the rear upper edge of the moving base (6) has the rear roller conveyor (3
When the uppermost edge of the movable table (6) is at the same level as the front transportation surface of the roller conveyor (3b), the frontmost load (4) is moved. It moves on the front roller conveyor (3b) by its own weight.

With the advance of the earliest load (4), the second and subsequent loads (4) ... also slightly advance, but the second load (4)
The front lower part of (4) immediately contacts the stop plate (23) at the rear end of the movable table (6) and is stopped (the state at this time is shown in FIG. 5 (b)).
Shown in).

Next, while the piston rod (10b) of the air cylinder device (10) is retracted forward and the moving table (6) is moved to the forward descending position shown in FIG. Contrary to the above operation, first the roller conveyor (3b) with the front upper edge at the front
Of the trailing edge of the rear roller conveyor (3a), or the lower upper edge of the trailing edge of the trailing edge of the trailing edge of the trailing roller conveyor (3a).

Then, the second load (4) moves onto the transport surface of the moving table (6) (a state in the middle of this movement is shown in FIG. 5 (c)), and its front lower portion is the front roller. Stop plate for conveyor (3b)
It stops by touching (24).

The third and subsequent loads (4) are also the second loads.
Although it moves forward with (4), since the interval (5) is smaller than the front-rear length of each load (4), the third and subsequent loads (4) ...
5 is stopped by sequentially contacting the rear end of the front load on the roller conveyor (3a) at the rear of the front without moving to the moving table (6), and the state shown in FIG. 5 (a). Is the same as

Hereinafter, by repeating the same operation,
The second and subsequent loads (4) ... Are sequentially sent forward one by one.

As in the above embodiment, the intermittent feeding device for the load
When (1) is applied to the fluidized shelves (3) arranged in a multi-tiered manner in the vertical direction, the moving table (6) and the air cylinder device (10) as a driving means for driving the moving table can be made thin, Each fluid shelf
There is an advantage that the vertical distance of (3) can be reduced.

In the above-mentioned embodiment, the front and rear conveying means are the free roller conveyors (3a) and (3b) which incline forward and downward. However, these are horizontal known motor driven roller conveyors, It can also be a belt conveyor or other transport means.

[0044]

According to the present invention, the following effects can be obtained.

(A) According to the structure of the first aspect, the load can be reciprocated between the front and rear conveying means by diagonally reciprocating between the backward moving position and the forward moving downward position.
Since it is possible to reliably send each piece forward, the entire device can be made thinner, the structure can be simplified, and there is no risk of damaging the load or sending multiple loads together. Since it does not require expensive means such as a large pallet, a sensor for detecting the presence or absence of a load, and a load traveling speed control device, it is practical.

(B) According to the second aspect, the load can be directly handled without placing the load on a dedicated pallet or the like.

(C) According to the third aspect of the present invention, it is possible to smoothly move the load from the movable table to the front transport means only by the weight of the load itself, and move the transport means such as a small belt conveyor. Since it is not necessary to place it on the table, the structure can be simplified.

(D) According to the fourth aspect, the load can be advanced more smoothly than only the dead weight of the load, and it is economical because it is not necessary to provide a driving means such as a motor.

(E) According to the fifth aspect, the movable table and the driving means thereof can be compactly arranged between the front and rear conveying means, and the upper and lower multi-stages which are required to be particularly thin. When it is applied to a formula type fluidized shelf, its effect can be fully exerted.

[0050]

[Brief description of drawings]

FIG. 1 is a schematic side view of a fluidized shelf with an embodiment of the present invention.

FIG. 2 is a plan view of the main part of the same.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a schematic side view showing a different operating state of the embodiment of the present invention.

[Explanation of symbols] (1) Intermittent feeding device (2) Shelf frame (2a) Support (2b) Horizontal rod (3) Flow shelf (3a) (3b) Roller conveyor (conveying means) (4) Load (5 ) Interval (6) Moving base (7) Support material (7a) Mounting piece (8) Guide hole (9) Guide frame (9a) (9b) Guide plate (9c) (9d) Connecting plate (10) Air cylinder device ( Telescopic drive means) (10a) Cylinder (10b) Piston rod (11) Bracket (12) Bolt (13) Shaft (14) Shaft hole (15) Connecting material (16) Connecting shaft (16a) Thread (17) (17 ') Sleeve (18) Roller (19) Rail (20) Support (20a) Through hole (21) Nut (21b) Bolt (22) Roller (23) (24) Stop plate

Claims (5)

[Claims] 1. A required space is provided between the transporting means before and after transporting a load toward the front, and a moving base whose upper surface, which is a transporting surface, inclines forward and downward is provided in the space, and a rear upper edge is a rear portion. Of the transportation means of the transportation means of (1) above, and the front upper edge is at the same level as or above the transportation surface of the transportation means of the front portion, and the retracted and raised position, and the transportation of the transportation means of which the front upper edge is the front portion. It is arranged below the surface, and the rear upper edge is arranged to be movable to a forward descending position which is at the same level as or lower than the conveying surface of the rear conveying means, and the movable table is reciprocated to both positions. An intermittent feeding device for a load, which is provided with a driving means for moving the load. 2. The intermittent feeding device for a load according to claim 1, wherein the interval between the front and rear transport means is shorter than the front-back length of one load. 3. An intermittent feeding device for a load according to claim 1, wherein a plurality of rotatable rollers are provided laterally on the upper surface of the moving table, and the upper surface of the rollers serves as a conveying surface. 4. The front and rear transportation means are roller conveyors forming a fluidized shelf whose transportation surface is inclined forward and downward, and the forward downward inclination angle of the transportation surface of the movable table is defined as the forward downward inclination of the transportation surface of the fluidized shelf. The intermittent feeding device according to any one of claims 1 to 3, which is larger than a corner. 5. A pair of left and right guide plates, which are fixed to appropriate fixing portions and face in the front-rear direction, are provided with a pair of front-rear guide holes inclined forward and downward, and the front-rear guide holes are inserted laterally. 5. A pair of front and rear connecting shafts are fixed to a movable base, and each connecting shaft and an appropriate fixed portion are connected to respective end portions of a telescopic drive means that is oriented substantially in the front-rear direction. The intermittent feeding device for the load according to any one of the above.