JPS58188207A - Pallet stowing device - Google Patents

Abstract

PURPOSE:To reduce the installating cost and to effectively utilize a space, by enabling the conveyance of pallets, being different in size, to be stored in and taken out of pallet-stowing shelves, having each distinct size respectively, by means of a single stacker crane. CONSTITUTION:A moving platform 14 of a single stacker crane 11 is provided with a wide fork 15 and a narrow fork 16. In the case of a large pallet 3, it is conveyed in and out through the backward and forward movement of the wide fork 15 after the wide fork is positioned in each pallet housing spot in a large pallet stowing shelf 1. In the case of a small pallet 6, it is conveyed in and out through the forward and backward movement of the narrow fork 16 after the narrow fork is positioned in each pallet housing place in a small pallet stowing shelf 4.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a work pallet storage device IK in an unmanned storage system.

The purpose of the present invention is to produce several types of pallets of different sizes)
This allows any pallet to be taken in and out using a single stacker crane.

A pallet storage shelf and a stacker crane for loading and unloading the work pallets stored therein are used as a storage device for work pallets in the unmanned side storage system of the workpiece. By using a stacker crane, a large amount of work pallets can be stored three-dimensionally, resulting in a significant reduction in floor space and allowing work pallets to be loaded and unloaded with high efficiency.

However, conventional stacker cranes could only handle one type of pallet, so if the types (sizes) of pallets were different, separate storage shelves and stacker cranes had to be provided for each type of pallet. In particular, the stacker crane requires a control device to move up and down and left and right and position it at a position corresponding to each pallet storage position on the storage shelf, and also requires a forward and backward movement of the fork to take pallets into and out of the storage shelf. Therefore, providing a stacker crane for each type of pallet would lead to an increase in equipment costs.

The present invention provides a pallet storage device that solves the above-mentioned problems, and embodiments thereof will be described below with reference to the drawings.

In the first η, l is a large pallet storage shelf, and a thick pallet stand 2 for storing a large number of large pallets 3 is structured three-dimensionally. Reference numeral 4 denotes a small pallet storage shelf, which is arranged in parallel with the large pallet storage shelf 1 at a required interval, and has a three-dimensional structure with a small pallet stand 5 for storing 6vIci of small pallets.

At one end of each of the large pallet storage shelf 1 and the small pallet storage shelf 4, there is a transfer device 7 for receiving and transferring pallets to a self-propelled carrier 10 guided by a carrier guide cap 9.
．． 8 is installed.

A stacker crane 11 is provided between the large pallet storage rack 1 and the small pallet storage rack 4, which is movable horizontally and vertically along each storage rack 1.4. The configuration of this stacker crane 11 is shown in FIG.
A vertical running rail 13 is erected on the running platform 4 running on the vertical running rail 13, and the upper end of the vertical running rail 13 is a ceiling rail 344K.
being guided. Reference numeral 14 denotes a movable platform that moves up and down while being guided by the vertical traveling rails 13. Reference numeral 4o indicates a motor for traveling the traveling platform, 41 indicates a motor for lifting and lowering the movable platform 14, and 42 indicates a wire for lifting and lowering.

On the movable base 14 are a pair of wide forks 15 that move forward and backward while supporting a large pallet) 3', and this medium wide fork 1.
A pair of intermediate forks 16 that move forward and backward while supporting a small pallet (6v) are arranged on the inside of the forks 5. Each pallet storage position of this wide fork 15 large pallet storage shelf 1
Further, the intermediate fork 161 is provided with a positioning control device 45 for positioning each pallet storage position on the small pallet storage shelf 4 (the traveling platform 43 and the movable platform 14 can be selectively switched).

Configuration arrangement K of the medium wide fork 15 and the medium narrow fork 16
The forward and backward drive mechanism will be explained with reference to FIGS. 2 to 4.

Since the configurations of the wide fork 15 and the intermediate fork 16 are the same, the wide fork 15 side will be representatively explained with reference to FIGS. 3 and 4.

The forks include a fixed fork 17 fixed on a movable base 14, an intermediate fork 18 that moves on the fixed fork 17,
The support fork 190 moves on the intermediate fork 18 and is composed of three stages, and is guided by guide rollers 4.

Fixed fork 17Kt! A fixed rack n is provided in the longitudinal direction KljI, and a movable rack is provided on the support fork 19 in the longitudinal direction opposite to the fixed rack n. Further, the intermediate fork 18 includes a binion Y 24 that engages with the fixed rack 22, a binion 5 that engages with the movable rack 23, and a rack K.

An intermediate pinion δ meshing with both of the pinions 24 and 26 is rotatably mounted.

Further, the movable base 14 corresponding to both end positions of the fixed fork 17 is rotatably provided with a drive sprocket 27t at one end position and a driven Sugerocket 28 at the other end, and a chain 29v drive sprocket fixed to one end of the intermediate fork 18 with 30gK. a-butt) At 27! Cross the hook from the drive sprocket n to the driven sprocket 28, and connect the one end button and the drive sprocket (27) to the intermediate fork 1.
It is fixed to the other end of 8. Therefore, the state shown in the younger brother figure 3 is the state of the fork extended forward, but the drive sprocket 2
7″41: When the chain 29 rotates counterclockwise in FIG.
When the pinion 26 is moved to the left, the pinion 26 that meshes with the fixed rack 22 rotates counterclockwise, and the pinion 26 that meshes with the movable rack 23 via the intermediate pinion 25 rotates counterclockwise in the same direction as the pinion 26. The support fork 19Y moves to the left, and the fixed fork 17, the upper intermediate fork 18, and the support fork 19 all overlap and are shortened backward.

M is a driven sprocket 2 of a pair of left and right fixed forks 17
It is an interlocking axis that connects 8 to 11-f.

In Fig. 2, the intermediate fork 16 @ feel is a driving tin rocket, for example a driven sprocket, 291! is a chain, and theory is an interlocking axis.

Wide fork 15 and intermediate fork 1 having the above configurations
As shown in FIG.
A 1Ill drive sprocket core is freely rotatably supported on one drive shaft.

The rotational power is transmitted by a drive shaft (the end KtX pulley is fixed to the drive shaft and the pulley of the fork advance/retreat motor 31) 35. A spline is engraved on both drive sprockets (27.27#) of the drive shaft, and a clutch member is fitted to this spline, and the drive sprocket is connected to the drive sprocket by the operating rod 38 connected to the piston rod of cylinder 5. ! , is configured to transmit the rotational power of the fork advance/retreat motor 31 by engaging with either one of the arms.

3g is a stopper member, which is fixed to the operating rod 38. An intermediate fork 1 is attached to one end of this stopper member.
A stopper for regulating the forward and backward movement of the wide fork 15 is formed at the other end, and the clutch member I engages with the drive sprocket 27 of the medium wide fork 15. When the wide fork 15'li operates, the stop collar 39a regulates the forward and backward movement of the intermediate fork 16, and the clutch member engages with the drive sprocket 27a of the intermediate fork 16@, and when the wide fork 16v operates. K is interlocked with a clutch member iris to regulate the forward and backward movement of the stopper and wide fork 15.

In the above embodiment, the fork is driven forward and backward by a mechanism such as a rotary motor, a sprocket, a chain, etc., but it is also possible to use a separate piston system using a cylinder.

According to the above unexploded interlock fH [one stacker crane 1
In the case of a large pallet 3, the wide fork 15 and the intermediate fork 16 arranged on the movable base 14 of 1 move the wide fork 15'Ik to each pallet storage position of the large pallet storage shelf 1 and move it forward and backward. To move the large pallet 3 in and out, and in the case of a small pallet 6, position the intermediate fork 16 at each pallet storage position of the small pallet storage shelf 4 and move it forward and backward. This involves loading and unloading work.

Therefore, since a single stacker crane can take in and out pallets of different sizes from pallet storage shelves of different sizes, large and small pallet storages are installed separately, and a stacker crane is installed for each. This eliminates the need to do so, which has the advantage of reducing equipment costs and making better use of space.

[Brief explanation of drawings]

Fig. 1 is a plan view of the device of the present invention, Fig. 2 is a plan view showing an embodiment of the fork advancement/retraction drive mechanism on the movable platform of the stacker crane, Fig. 3 is a side view showing the configuration of the fork, and Fig. 4 is FIG. 3 is a cross-sectional view taken along the line {--TV}, and FIG. 5 is an overall view of the stacker crane taken along the line v--v in FIG. 2. l...Large pallet storage shelf, 3...Thick pallet, 4...
...Small pallet storage shelf, 6...Small pallet), 11...
・Stacker crane, 12... Horizontal V J'k,
13・Working・Vertical travel ray, z, 14・@Φ movable table, 15
...Wide fork, No. 16, middle fork, 17
・・・Fixed 7 orc, I8・-fist intermediate fork, 19・
・・Support fork, η・・Fixed rack, η・Movable rack, S・・Binion, 6・・Intermediate binio/, base・・0 pinion, n・・Drive sprocket, A・Fist・
Driven sprocket, 6...Chain, 31...Fork advancement/retraction motor, O...Drive shaft, A...Spray y, 36/e internal latch member, 37+1...Cylinder,
sum...travel motor, 41...lifting motor, 43
...Traveling platform, 45...6'! Positioning control device. Figure 2 5 Figure 3 1 Figure 4 422

Claims (2)

[Claims] (1) At least two types of pallets of different sizes are stored separately - a large pallet storage shelf and a small pallet storage shelf, along which each storage shelf is movable in the horizontal and vertical force directions. In a pallet storage device consisting of a stacker crane equipped with a movable platform, a pair of medium wide forks support a large pallet on the movable platform of the stacker crane and move it forward and backward, and a small pallet is mounted on the inner side 9 of the wide fork. A pair of intermediate forks that support and move forward and backward are disposed, and a forward and backward drive device that selectively moves the wide fork and intermediate fork forward and backward is provided on the movable base, and each pallet storage on the large pallet storage shelf is A positioning device that can be selectively switched is provided for positioning the wide fork to face the wide fork and for positioning the intermediate fork marked with # to face each pallet storage position of the small pallet storage WL shelf. Pallet storage equipment. (2) Large pallet storage shelves and small pallet storage shelves are placed separately on both sides of the stacker crane's movement plane, the wide fork is provided so that it can move forward and backward in the direction of the large pallet storage shelf, and the middle fork is used for small pallet storage. The pallet storage device according to claim 1, which is configured to be movable forward and backward in the direction of the shelf.