JP3077011B2 - Pressing plate guide device for hanging conveyor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a holding plate guide device for securely and safely holding an object to be transported between a traveling vehicle and a carrier in a suspended conveying device.

[0002]

2. Description of the Related Art In a factory or the like, a conveyed object carried on a conveyor, for example, a container containing a large number of members, is supplied to a processing step, stored in a warehouse, or transferred to another conveyor. In such a case, a hanging transfer device is often used, and various types of such devices have already been provided.

[0003] As a device for holding a conveyed object between a traveling carriage and a carrier in this type of conveying device, there is Japanese Patent Application No. 5-143357 filed by the applicant earlier. In this prior application, a downward U-shaped hanging support is fixed to the four corners of the upper surface of the holding plate, and the upper piece is loosely fitted to the hanging support rod vertically suspended from the lower surface of the traveling carriage from below. There is a device suspended by a locking pin, and a pressing plate is urged downward by a compression spring wound around a suspension rod.

[0004]

According to this device, in order to increase the lifting stroke of the holding plate, the height of the downward U-shaped hanging support is increased and the height of the hanging support rod is increased. It is necessary to lengthen the support loose fitting portion. If the height of the suspension bracket is increased, the suspension bracket will be deformed or buckled due to external force, and the holding plate will not move up and down in parallel with the traveling carriage, or will stop halfway and deform or damage the transferred object. There is a risk. In addition, since the upper piece of the suspension support is a plate, if the lifting stroke of the holding plate is large, the suspension may be caught by the suspension support free-fitting portion of the suspension support rod in the middle, which often causes problems.

An object of the present invention is to provide a guide mechanism for ascending and descending the carrier even when the carrier has a large vertical stroke when the object placed on the carrier of the suspended carrier is clamped between the holding plates of the traveling carriage. It is an object of the present invention to provide a presser plate guide device that smoothly guides without trouble such as catching.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is to suspend a loading platform that is lifted and lowered by a motor on a traveling truck that travels along a rail erected on a ceiling or the like. Hanging the holding plate so that it can be moved up and down directly below, placing the object on the carrier and lifting it up, so that the object is sandwiched between the carrier and the holding plate and transported. In a presser plate guide device used for a transfer device, a plurality of suspending tubes are vertically provided on the traveling carriage, and a play insertion hole for loosely inserting a suspending shaft for suspending the presser plate in a vertically movable manner is formed in a bottom plate thereof. In addition, the pressing plate is urged downward by an elastic body.

On the bottom plate of the suspension cylinder, a bearing for slidably guiding the suspension shaft is placed so as to be movable sideways, and means for preventing the bearing from moving upward are provided. Good.

In addition, the bearing is a linear motion bearing, and a linear motion bearing support fitting for loosely inserting the linear motion bearing from above is fixed to a suspension cylinder to prevent the linear motion bearing from moving upward. Is good.

Further, it is preferable that a margin is provided between the top of the linear motion bearing and the upper lower surface of the linear motion bearing support.

[0010]

According to the present invention, an object to be conveyed is placed on a vertically movable carrier, and when the carrier is raised and the object abuts against the holding plate and the carrier is still raised, it is fixed to the upper surface of the holding plate. The lifting support shaft that lifts and lowers the presser plate rises while sliding in the linear motion bearing, and the transferred object abuts the presser plate unevenly, causing the presser plate to tilt and rise as it is. Since the linear motion bearing is loosely fitted in the linear motion bearing support so as to be able to move sideways and tilt, the linear motion bearing rises while correcting this uneven rising state. The same is true for a descent. Also, even if there is a mounting error of the suspension support shaft fixed to the upper surface of the holding plate or the suspension support tube suspended from the traveling carriage, the error can be absorbed in the same manner as described above.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings illustrate one embodiment of the present invention.
(1) is a rail erected on the ceiling, (A) is a bogie that runs by itself along the rail (1), and (B) is a luggage platform that is suspended from and lifted by the traveling bogie (A).

A pair of support plates (3) are provided vertically at the front and rear portions of the horizontal board (2) of the traveling vehicle (A) so as to be aligned in the front-rear direction and oriented in the left-right direction. A pair of left and right winding drums (4) are pivotally mounted at the center of both support plates (3).
Similarly, at both ends, a flanged roller (5),
A pressing roller (6) arranged in parallel with and adjacent to it is pivotally provided.

The free end of the suspension support belt (7) having the base end fixed to each winding drum (4) passes between the flanged roller (5) and the pressing roller (6), and the lower loading platform ( B) 4 of underframe (8)
It is fastened to the corner.

The drum shaft (4) of the pair of winding drums (4)
At the inner end of a), gears (9) having the same number of teeth are fitted and meshed with each other, and one of the gears (9) is a lifting and lowering provided in the center of the substrate (1) in the left-right direction. The motor, that is, the drive gear (11) of the double-axis motor (10) meshes, and the bed (B) is moved by the double-axis motor (10).
To move up and down while keeping the horizontal.

At the lower ends of the pair of support plates 3 and on both outer sides of both winding drums 4, a presser plate guide device 12 and a proximity sensor 13 are vertically provided.

The holding plate guide device (12) has a cylindrical suspension rod or suspension cylinder (12a) fixed to the lower surface of the support plate (3), and is loosely fitted into the suspension cylinder (12a). Hold down plate that extends downward
(15) a suspension shaft (16c) attached thereto, and an elastic body or a compression spring (17) acting in a direction to extend the suspension cylinder (12a) and the suspension support shaft (16c) to each other as main members. It becomes.

The press plate guide device will be described in more detail with reference to FIGS. 6 and 7. As shown in FIG. 6, the suspension cylinder (12a) whose top end is fixed to the lower surface of the support plate (3) has a bottom plate (12e) at its lower end. A suspension shaft (16c) is inserted into a play hole (12f), which is a round hole formed in the bottom plate (12e), and a linear bearing (12c) also called a linear ball bearing is inserted at the upper end thereof. A bearing is fitted, a linear motion bearing support (12b) is fitted from above, and this is fixed to the suspension cylinder (12a) with a set screw (12d). The hanging support shaft (16c) has a lock (16d) attached to the upper end thereof using a flat head screw (16e). This locking bracket (16
d) defines the limit of the descent of the suspension support shaft (16c) by hitting the linear motion bearing support (12b). It should be noted here that the suspension support shaft (16c) is loosely fitted into the play insertion hole (12f) at the lower end of the suspension support tube (12a) with a margin, and the outer diameter of the linear motion bearing (12c). FIGS. 6 and 7 show the relationship between the bearing and the inner diameter of the linear motion bearing support (12c).
, A certain gap is formed, and furthermore, the top surface of the linear motion bearing (12c) and the linear motion bearing support bracket
That is, some gap is left between the ceiling and the inner ceiling of (12b). The lower end of the suspension support shaft (16c) is attached to the holding plate base (15a) via the suspension support (16b),
Here, a fitting (16b) is provided. This bracket (16b) and hanging support
Compression spring (1) is attached to the mounting portion of (12a) to support plate (3).
7) is wound. Therefore, the holding plate (15)
It is biased downward by (17).

The proximity sensor (13) includes a lower first sensor (13a) and an upper second sensor (13b) attached to a hanging support member (13c) hanging from the lower surface of the support plate (3). ). The lower first sensor (13a) is a sensor that operates to decelerate the rotation of the elevating motor, that is, the two-axis motor (10), and the upper second sensor (13b) stops the rotation of this two-axis motor. It is a sensor that operates so as to make it fall.
When the holding plate (15) rises against the side of each holding plate guide device (12) against the compression spring (17), it approaches the proximity sensor (13) and decelerates the dual-axis motor (10). A sensing piece (18) to be stopped is attached.

A pair of left and right endless belts (20) wrapped around a pulley (19) are made to run in the same direction by a motor (21) on an underframe (8) of the carrier (B). Belt conveyor (2
2) is located.

The belt conveyor (2) at the upper part of the underframe (8)
A guide fence (24), which is substantially equal in length and parallel to the belt conveyor (22), is provided on the horizontal portion (23a) of both mounting plates (23) bent in a lateral L-shape laid on both outer sides of 2). There are provided two pairs of photoelectric sensors (25) which form a left and right pair for detecting an object to be transported at both ends thereof.

At the front and rear ends of a vertical portion (23b) of both mounting plates (23), the bases of a pair of left and right opposing rotating plates (26) are pivotally supported. The end is an angle-shaped engagement plate (27)
Near the both ends of the hook piece (27b), which is connected with the base piece (27a) and is always directed outward, engagement grooves (28) are cut out from the end edges, and the free ends of the two rotating plates (26) are provided. A transfer roller (29) is pivotally provided between the sections alongside the engagement plate (27).

As shown in FIGS. 3 and 4, a roller conveyor (31) for transporting a container (load) (30) containing a large number of members.
An engagement protrusion (32) is provided at a position corresponding to the engagement groove (28) of the engagement plate (27) on the end face of the station for transferring the load, and the engagement protrusion (32) is provided on the engagement protrusion (32). An annular groove (32a) with which the engaging groove (28) can engage from above is cut out.

The two front and rear rotating plates (26) are linked by a link (33) as linking means, and the both engaging plates (27) and the two transfer rollers (29) are set in the upright position shown in FIG. And in the opposite direction in synchronization with the lying position shown in FIG.

The above-described apparatus is, as shown in FIG.
(27) is directed upward, the guide fences (24) are moved outward, and the loading platform (B), which is rising near the traveling vehicle (A), is lowered by the dual-axis motor (10). As shown in FIG. 3, the roller conveyor (31) has the same height as that of the roller conveyor (31).

When the engaging plate (27) is turned outward, the engaging groove (28) engages with the annular groove (32a) of the engaging projection (32) of the roller conveyor (31). At the same time, the horizontal deflection of the loading platform (B) is prevented, and at the same time, the transfer roller (29) rotates upward and outward, and the belt conveyor (22) of the loading platform (B) and the roller conveyor (3).
In the middle of 1), they are equal in height, and the interval is divided and narrowed.

At the same time, the guide fence (24) is connected to the roller conveyor (31).
Move inward and fix in accordance with the width of the upper container (30).

Next, if the roller conveyor (31) and the belt conveyor (22) of the carrier (B) are operated, the container (30) containing a large number of members passes through the transfer roller (29) and is guided by the guide fence.
It is guided to (24) and transfers to a belt conveyor (22).

When both photoelectric sensors (25) detect that the container (30) has been completely transferred to the carrier (B), the belt conveyor (22) is stopped by the signal, and the rotating plate (26) is rotated. Moving the engaging plate (27) to the upright position facing upward, and moving the transfer roller (29) upward and inward to move the double-shaft motor (10).
To raise the bed (B).

When the loading platform (B) rises to near the upper limit, the container
(30) abuts against the high friction material (15b) of the holding plate (15) and pushes up the holding plate (15) against the compression spring (17). In the vicinity of the first sensor (13a), the signal causes the dual-axis motor (10) to reduce the rotation.
From this time, the lifting speed of the loading platform slows down, and then the sensing piece (1
When 8) approaches the second sensor (13b), the signal stops the dual-axis motor (10) and stops the bed (B) from rising.

Now, when raising the presser plate (15),
The presser plate guide device (12) guides the presser plate (15) to the front, rear, left and right with a sufficient space. That is, the presser plate guide device (12)
A hanging support shaft fixed to the upper surface of the holding plate and supporting the holding plate so as to be able to move up and down freely; and a linear motion bearing supporting bracket for loosely inserting the linear motion bearing for slidably inserting the hanging support shaft. And the linear motion bearing support is fixed to a suspension cylinder suspended from the traveling carriage. According to this device, it is possible to absorb the mounting error of the suspension support shaft fixed to the upper surface of the holding plate and the mounting error of the suspension support tube vertically mounted on the traveling vehicle, and the like. Manufacturing becomes easier.
In addition, when the presser plate is raised and lowered, the suspension shaft slides smoothly in the linear motion bearing, and the linear motion bearing can move in the linear motion bearing support bracket. Even if the holding plate is tilted due to contact with the holding plate and rises as it is, the holding plate can be lifted while correcting the uneven rising state, and the holding plate can be raised and lowered smoothly.

After the loading platform has been lifted and stopped, in this state
(A), the container (30) is pressed against the loading bed (B) by the holding plate (15) urged downward by the compression spring (17). There is no lateral displacement, and during that time, the top surface is not stained by dust or the like.

The apparatus, which has reached the target place, is operated in the reverse of the above, so that the transported container (30)
Since the container (30) does not shift sideways during transportation, the container (30) is correctly carried out to a predetermined place in a predetermined posture.

In the above embodiment, the object to be conveyed is the container (30). However, for example, a cardboard box, a wooden box, a basket, and the like can be conveyed in the same manner, and a roller conveyor is used instead of the belt conveyor. You can also.

[0034]

According to the present invention, the following effects can be obtained. (a) A suspension shaft fixed to the upper surface of the holding plate and suspending the holding plate so as to be able to move up and down freely is loosely inserted into a play insertion hole formed in a bottom plate of a plurality of hanging cylinders suspended from the traveling carriage. At the same time, since the holding plate is urged downward by the elastic body, the transferred object abuts against the holding plate unevenly, causing the holding plate to tilt. It is possible to ascend while correcting the ascending state, so that the transported object can be reliably sandwiched and fixed between the holding plate of the traveling vehicle and the carrier.

(B) Similarly, the linear motion bearing that slides the suspension shaft has a margin at the peripheral side and the upper end of the linear motion bearing support metal, that is, with allowance for rattling,
Since the holding plate is housed, there is no danger that the lifting motion will be caught when the holding plate is tilted, and the transferred object will not be deformed or damaged by an excessive force, and can be raised.

(C) Further, since the above-mentioned margin is provided, even if the attachment accuracy of the suspension cylinder or the suspension support shaft is not high, a dimensional error can be absorbed, and the production becomes easy.

[Brief description of the drawings]

FIG. 1 is a front view of a hanging transport device provided with a presser plate guide device of the present invention.

FIG. 2 is a bottom view of the traveling cart of the hanging transport device shown in FIG. 1 with a holding plate removed.

FIG. 3 is a partially longitudinal side view showing a state when a carrier of the hanging and conveying apparatus shown in FIG. 1 is connected to a roller conveyor.

FIG. 4 is a partially longitudinal side view showing a state where the carrier of the hanging and conveying apparatus shown in FIG.

FIG. 5 is a partial longitudinal side view showing a situation where the loading platform on which the containers of the hanging transport device shown in FIG. 1 are loaded rises to the upper limit.

FIG. 6 is an enlarged vertical sectional view of a holding plate guide device of the hanging transport device shown in FIG. 1;

FIG. 7 is an enlarged longitudinal sectional view of the presser plate guide device similar to FIG. 6, but showing a state where the loading platform is raised and the compression spring is fully compressed.

[Explanation of symbols]

 (A) Carriage (B) Carrier (1) Rail (2) Substrate (3) Support plate (4) Winding drum (4a) Drum shaft (5) Roller with flange (6) Holding roller (7) Suspension belt (8) Underframe (9) Gear (10) Double shaft motor (11) Drive gear (12) Presser plate guide device (12a) Suspension cylinder (12b) Linear motion bearing support bracket (12c) Linear motion bearing (12d) Set screw (12e) Bottom plate (12f) Free insertion hole (13) Proximity sensor (13a) First sensor (13b) Second sensor (13c) Hanging support member (15) Holding plate (15a) Holding plate base (15b ) High friction material (16a) Hanging bracket (16b) Bracket (16c) Hanging shaft (16d) Locking bracket (16e) Countersunk screw (17) Compression spring (18) Sensing piece (19) Pulley (20) Endless Belt (21) Motor (22) Belt conveyor (23) Mounting plate (23a) Horizontal part (23b) Vertical part (24) Guide fence (25) Photoelectric sensor (26) Rotating plate (27) Engagement plate (27a) base Piece (27b) hook piece (28) engaging groove (29) transfer roller (30) container (31) roller conveyor (32) engaging protrusion (32a) annular groove (33) link

Continuation of front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B66C 13/00, 15/00, 17/00

Claims (4)

(57) [Claims] 1. A load carrier that is lifted and lowered by a motor is suspended from a traveling vehicle that travels along a rail provided on a ceiling or the like, and a presser plate is vertically suspended directly below the traveling vehicle so as to be vertically movable. A holding plate guide device used in a hanging transfer device configured to hold and transfer a transferred object between the carrier and the holding plate by placing and lifting the transferred object. And a play insertion hole for loosely inserting a suspension support shaft for suspending the holding plate so that the holding plate can be lifted and lowered is formed in the bottom plate, and the holding plate is urged downward by an elastic body. A presser plate guide device characterized in that: 2. A bearing for slidably guiding a suspension shaft is mounted on a bottom plate of a suspension cylinder so as to be movable sideways, and means for preventing the bearing from moving upward is provided. The presser plate guide device according to claim 1, wherein: 3. A linear motion bearing is used as a bearing, and a linear motion bearing supporting member for loosely inserting the linear motion bearing from above is fixed to a suspension cylinder to prevent the linear motion bearing from moving upward. The presser plate guide device according to claim 2, characterized in that: 4. The presser plate guide device according to claim 3, wherein a margin is provided between the top of the linear motion bearing and the upper lower surface of the linear motion bearing support.