JPS59163292A - Conveyor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] - The present invention relates to a conveyance device that runs horizontally along a track, and particularly to a conveyance device that improves the retention of conveyed objects.

[Prior art]

In general, in order to make factories unmanned and to reduce the number of employees, various article transport devices have been devised and some have been put into practical use in order to use machines to move items between departments.

By the way, for example, the conveyed object is transferred from the first station to the second station.
In the case of automatically transporting the object to the station, the object cannot be transported just by being held by the holding device of the transport device. That is, once the conveyed object is held, unless the held conveyed object is lifted, the table on which the conveyed object is placed becomes an obstacle, making it impossible for the conveying device to travel.

Therefore, in addition to the holding device, the conveyance device is equipped with a lifting device to raise and lower the conveyed object to eliminate the above-mentioned inconvenience. Since a drive machine for each device is required and control of the operation of both parts becomes complicated, the device becomes larger and the time taken to attach and detach the conveyed object becomes longer.

[Purpose of the invention]

The present invention has addressed the above-mentioned problems, and its purpose is to provide a small-sized conveyance device that can attach and detach objects to be conveyed in a short time. [Summary of the Invention] In order to achieve this, at least one pair of holding arms are provided that hold the object to be transported by the operating force of the operating device, and the object to be transported is lifted by the movement of the holding arms from the start of holding the object to the completion of holding. It was configured like this.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIG. The bogie 1 is suspended from an elevated track 3 by wheels 2A and 2B, and is driven by a drive device (not shown) and runs by itself along the elevated track 3 (not shown), or by a trolley chain (not shown). . A pair of holding arms 4Aj4B are each rotatably supported on this stand M1 by a shaft P1. This holding arm 4A.

4B forms an L shape, and the center of the vertical sides of this L shape is the axis P.
It is supported by I, and its horizontal sides are arranged to face each other, and these horizontal sides are used as retaining parts 4E. On the other hand, connection frames 5A and 5B are connected to the upper ends of the vertical sides of each of the holding arms 4A and 4B via shafts P2, and the connection frames 5A and 5B are horizontally aligned and the vertical sides of the holding arms are vertical. At this position, the connecting frames 5A and 5B are connected by the shaft P4 to form a link mechanism. A pressing shaft 7 is provided to protrude from a drive unit 6 such as an air cylinder supported by a drive unit 6 . On the other hand, a stopper 8 is provided at the lower part of the cart 1 in order to restrict the suppression of the suppression shaft 7 and maintain the connection frames 5A, 5B horizontally and in a straight line. The axis P 2 flll of the connecting frame 5A extends beyond this axis P2, and the pressing shaft 10 that presses from above the overhang portion 5EfC is pushed onto the truck 1 via a drive unit 9 such as an air/ring. is supported by

The cart 1 side is configured as described above, but if the conveyed object 11 is provided with an engaging portion 11B that can be locked by the engaging portions 4E of the holding arms 4A and 4B mounted on the cart 1, what would be possible? There is no problem even if it is configured in a similar shape.

The operation of the conveying device configured as described above will be explained next. The bogie l running on the elevated track 3 operates the drive unit 9 to push down the overhanging part 5E of the connecting frame 5A with the suppressing shaft 10, and the holding arms 4A, 4B and the connecting culms 5A, 5Be lined with two-dot chain lines. hold it in position. At this time, the holding arms 4A, 4B
The retaining portions 4B are open.

In this state, when the trolley 1 stops at a certain stake 11 of the transported object 11, the transported object 11 is moved to the table 12 directly below the trolley 1. Next, the drive section 9 is operated to pull up the press shaft 10, and at the same time another drive section 6 is operated to push down the press shaft 7.

As a result of this operation, each connecting frame 5A, 5B gradually becomes horizontal from a chevron shape, and at the same time, the distance between the retaining portions 4B of the holding arms 4A, 4B gradually becomes narrower. The locus of movement of the retaining portion 4E at this time is a circular orbit centered on the axis P1. Therefore, by starting the engagement between the engaging part 4E of the holding arm and the engaging part 11B of the conveyed object 11 while moving upward from the lowest position of the circular orbit, the holding arm When the vertical side is held in the vertical position, the engagement is ensured, and since the locus of movement of the engaging portion 4E is upward movement from the lowest position of the circular orbit, the upward movement amount H The entire conveyed object 11 can be lifted from above the table 12.

On the other hand, when the conveyed object 11 is to be lowered onto the table 12 of the station, the above operation may be reversed.

As explained above, according to this embodiment, it is possible to hold and especially lift the transported object 11 in one operation, so it is possible to attach and detach the transported object in a short time, and also to carry out special operations. Since a lifting drive is not required, the conveying device can be made into a 1J vine shape.

Figures 2 and 3 show another embodiment of the present invention, which differs greatly from the previous embodiment in that the previous embodiment utilizes the reciprocating motion of the suppression shaft to drive the holding arm. In contrast, the fourth embodiment utilizes rotation of the shaft. Hereinafter, FIGS. 2 and 3 will be explained in detail.

Chassis 1. Wheels 2A and 2B, elevated track 3. The shape and positional relationship of the pair of L-shaped holding arms 4A and 4B are basically the same as in the previous embodiment. However, the shaft P2 is attached to the holding arms 4A and 4B.
The connecting frames 13A and 13B connected via k are each connected to a shaft P.
3 to the drive frame 14. Of course, each connection frame 13A.

The length of each rod is set so that the vertical sides of the holding arms 4A, 4B become vertical when the drive frame 13B and the drive frame 14 are aligned horizontally. The drive frame 14 is connected to the truck 1.
It is attached to the output shaft 16 of a motor 15 fixed above. Further, a suspension bar 17' is provided on the truck 1 to completely restrict any unnecessary movement of the drive frame 16.

This stopper 17 has two rods (17A, 17B) each equipped with a cushioning rubber. One stopper 17A is used to maintain the vertical position of the drive frame 14, and the stopper 17B is used to maintain the horizontal position of each rod. The stopper 17 is provided at a position to maintain a straight line, and the movement of the drive frame 14 is restricted to 90 degrees.

Further, rollers a and ELb are provided at the tips of the engaging portions 11E of the conveyed object 11, respectively, and the engaging portions 4E of the holding arms are provided with rollers a and ELb, respectively.
facilitates engagement with the

The conveyance device configured as described above has the holding arm 4A.
and 4B, with the connecting frames 13A and 13B and the drive frame 14 in the positions indicated by the two dots @, the vehicle traveled to the target station and confirmed that the transported object 11 was located directly below the trolley 1. If so, drive the motor 15 and output shaft 16.
Rotate clockwise relative to the paper surface. As the output shaft 16 rotates, the connecting rod 14 also rotates in the same direction and stops in contact with the stopper 17B at a position where the connecting frame and the drive frame are horizontally aligned. The movement of the holding arms 4A and 4B at this time is as shown in FIG. The engagement with the roller lea is ensured at the position (solid line) where the holding arm 4A contacts the roller FLa and the vertical side of the holding arm 4A is vertical, and the retaining portion 4E is moved upward to the upward movement position (locking start position) 4. Since the holding portion 4E of the holding arm moves upward in the H dimension from -b to the completion of holding, it is possible to lift the object 11 by that amount. In addition, FIG. 3 shows one holding arm 4A.
Although this has been explained with reference to the drawings, it goes without saying that the other holding arm 4B moves symmetrically.

Furthermore, when lowering the conveyed object 11, if the operation is performed in the reverse order as described above, the holding arms 4A and 4B will widen the interval between the holding parts 4B while lowering the conveyed object 11, and as shown in FIG. The conveyed object 11 is completely lowered at the position indicated by the chain line.

With this configuration, in addition to the effects of the above embodiment,
The following effects can be achieved.

That is, compared to the drive of the holding arm by the reciprocation of the suppression shaft in the previous embodiment, this embodiment uses rotational force to drive the holding arm.
There is no need for a large space for reciprocating movement such as that of the suppressing shaft, and the conveying device can be made more compact accordingly.

Further, while the conveyed object 11 is being conveyed, the holding arm 4A.

4B must be locked to prevent it from opening, but in this embodiment, when the holding arms 4A and 4B are holding the object 11, each rod 13A, 13B, and 14 are in a straight line, resulting in a dead point. Therefore, even if horizontal force is applied to the holding arm 4A or 4B due to sideways movement, it will not be reversely driven as shown in Figure 2, making it safe and reliable.

Further, rollers R, a,
Since R and 'b are provided, the engaging portions 4E of the holding arms 4A and 4B
This makes it easier to engage the conveyed object 11 with H=j-
The motor 15 can be easily lifted, and as a result, the capacity of the motor 15 can be reduced.

In addition, the engagement and lifting of the engaging portion 4E and the engaging portion 11E
For further smoothness, a roller l is used as shown in Figure 4.
An inclined surface 18 may be formed at the tip of the engaging portion 4E on which the elements l and a ride. By forming such an inclined surface 18, for example, the vertical position of the table (not shown) of the transported object 11 is lowered by a dimension Δ from the normal position, so that it is normally R-2. Even if a certain roller [1, a is at the position R-t, R, t = roller fla, as shown by the two-dot chain line.
Since the paper can be scooped up on the inclined surface 18, the holding operation becomes smooth.

By the way, in each of the above embodiments, the vehicle travels along the elevated track 3, but the vehicle is not limited to the elevated track 3, but can be applied to vehicles that travel substantially horizontally on the floor surface.

〔Effect of the invention〕

As explained above, in the present invention, the object to be transported is held and lifted by the -movement, so that it is possible to reduce the number of drives required for two, one for holding and one for lifting the object, to one. As a result, the entire device can be made smaller, and since holding and lifting can be performed at the same time, it is possible to provide a conveyance device that can shorten the time required to attach and detach objects to be conveyed.

[Brief explanation of the drawing]

1 and 2 are side views showing different embodiments of the conveying device according to the present invention, FIG. 3 is an enlarged view of the main part of FIG. 2, and FIG. 4 is a modification of FIG. 3. . 1... Trolley, 4A, 4B... Holding arm, 4E... Holding part, 2nd En ( // 3rd Kasumi No. 40 55

Claims (1)

[Claims] 1. A trolley that runs horizontally by itself or by being towed;
In the transport device, the holding device includes a holding device that is mounted on the cart and holds the transported object, and an operating device that operates the holding device to hold and release the transported object, wherein the holding device is connected to the operating device. At least one pair of holding arms are configured to hold the object to be transported by operating force, and the object to be transported is lifted by movement of the holding arms from the start of holding the object to the completion of holding. Characteristic conveyance device. 2. A cart that runs horizontally by itself or by being towed;
In the conveying device, the holding device includes a holding device that is mounted on the trolley and holds the transported object, and an operating device that operates the holding device to hold and release the transported object, wherein the holding device has a vertical side that is It has at least a pair of L-shaped arms that are rotatably supported by the truck and arranged so that their horizontal sides face each other, and the pair of L-shaped arms are configured to be rotated by the operating device, and the A retaining portion that engages with the horizontal side of the bent arm is formed on the conveyed object, and the bent arm is configured to engage with the retaining portion when the horizontal side is bent horizontally. A conveying device characterized by: 3. In claim 2, the operating device includes a drive shaft installed at an intermediate position with respect to the pair of L-shaped arms on the truck, and a central position fixed to the drive shaft. A drive frame, a connection culm that rotationally connects the drive frame and each of the above-mentioned round arms, and a drive machine that rotates the drive shaft, and when the horizontal side of the above-mentioned round arms is horizontal; A conveyance device characterized in that the rods are arranged in a straight line. 4. The conveying device as set forth in claim 2, characterized in that the upper surface of the horizontal side tip of the bow-shaped arm is formed with an inclined surface whose tip becomes lower. 5. The conveying device according to claim 2, characterized in that a roller is provided at the tip of the engaging portion of the conveyed object.