JPH0723715U - Pallet-type storage and transportation equipment - Google Patents

Abstract

(57) [Summary] [Purpose] Large plates can be stored, and even small plates can be stored space-efficiently. [Configuration] A parent pallet 8 to be placed on the shelf 2a of the rack 2,
A plurality of child pallets 9 placed side by side on the parent pallet 8 are used. The child pallet 9 can be pulled back and forth on the guide rails of the parent pallet 8 and is engaged with the parent pallet by a hook. The stacker crane 3 carries the parent pallet 9 between the shelf 2a and the loading / unloading position. A pallet changer 4 for loading / unloading the child pallet 9 to / from the parent pallet 8 is provided at the loading / unloading position. The pallet changer 4 has a traveling body 22 provided with a child pallet coupling device for coupling the pallet 9 and an engagement / disengagement mechanism for detaching the hook from the parent pallet.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pallet-type storage / transportation facility for loading and unloading a pallet on which a plate material is placed into and out of an automated warehouse in a sheet metal processing line, etc.

[0002]

[Prior art]

 Conventionally, in a sheet metal processing line such as a punch press, a storage / conveyance facility has been used in which pallets loaded with plate materials are stored in an automatic warehouse, and a trolley conveys between the automatic warehouse and the plate material processing machine. Each shelf of the rack of the automated warehouse is sized so that one pallet can be placed, and each pallet is loaded with plate material at one place.

[0003]

[Problems to be solved by the device]

 However, with this configuration, if the shelves of the automated warehouse are made smaller and the pallet size is made smaller, large plate materials cannot be stored. Conversely, if the pallet size is made larger, the pallet size will be smaller when storing small plate materials. There is a problem that the unused part becomes large and the storage efficiency deteriorates.

An object of the present invention is to provide a pallet type storage / transport facility that can store a large-sized transported object and can also store a small-sized transported object in a space-efficient manner.

[0005]

[Means for Solving the Problems]

 The pallet-type storage / transport facility of this invention uses a parent pallet that is placed on each rack shelf and a plurality of child pallets that are placed side by side on the parent pallet and can be pulled back and forth. A stacker crane and pallet changer are used to transfer pallets. The stacker crane is a means for transporting a parent pallet of an arbitrary shelf to a predetermined child pallet loading / unloading position, and a pallet changer is for loading / unloading the child pallet to / from the parent pallet at the loading / unloading position.

In the pallet-type storage / transport facility, the child pallet has guide rollers guided in the pull-out direction by the guide rails of the parent pallet, and hooks that are detachably engaged with the parent pallet. The changer may be provided with a child pallet connecting device for connecting a child pallet and an engagement / disengagement mechanism for engaging / disengaging the hook, on the traveling body that moves forward and backward in the drawing direction.

[0007]

[Action]

 The transported object is placed on a child pallet, and the parent pallet with a plurality of child pallets is stored on the rack shelf. The parent pallet is used to store each rack shelf and to move child pallets within the rack. The child pallets are loaded and unloaded by the pallet changer at the child pallet loading / unloading position, and only the child pallets are transported to the processing machine outside the rack. Since the object to be conveyed is placed on each child pallet so as to be stored, the dimension of the child pallet and the number of sheets to be placed on the parent pallet can be appropriately set according to the dimension of the object to be conveyed. Therefore, a large transferred object can be stored, and even a small-sized transferred object can be stored space-efficiently. Further, since the child pallet is automatically pulled out in a direction orthogonal to the arrangement direction with respect to the parent pallet, the child pallet can be taken in and out with a pallet changer having a simple structure. When the child pallet is provided with a hook that disengages from the parent pallet, the child pallet is prevented from moving unexpectedly with respect to the parent pallet.

[0008]

【Example】

 An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a plan view showing an outline of a plate material processing line using the pallet type storage / transport facility of this embodiment. This pallet-type storage / transportation facility 1 includes a rack 2 having a plurality of shelves 2a arranged vertically and horizontally, a stacker crane 3 that travels in a passage 10 in front of the rack 2, and a plurality of pallet changers 4 for loading and unloading child pallets. It consists of an automated warehouse system with and. Each shelf 2a of the rack 2 stores a parent pallet 8 on which a plurality of child pallets 9 (9A, 9B, 9C) are placed side by side. A plate material W having substantially the same size as the child pallet is loaded on each child pallet 9.

The stacker crane 3 is a conveying means for conveying the parent pallet 8 between the arbitrary shelves 2a of the rack 2 and the child pallet loading / unloading positions 11A, 11B, 11C in which the pallet changers 4 are arranged. A plate material processing machine 12 such as a turret punch press is installed side by side in front of each pallet changer 4, and a loader 36 and an unloader 13 are installed on both sides thereof. A part of the rack 2 is provided with a parent pallet entry / exit area 6 for waiting the parent pallet entry / exit traverser 5, and the parent pallet entry / exit traverser 5 enters and exits the rack 2 along the rails 7 from the rear side. It is free.

FIG. 2 shows a state in which the child pallet 9 is mounted on the parent pallet 8. The parent pallet 8 is provided with three sets of chevron steel-made guide rails 14 for guiding each child pallet 9 in the front-back direction (X direction) so as to be freely drawn out. Further, as shown in FIG. 3, the child pallet 9 is provided with guide rollers 15a and 15b guided on the bottom and side surfaces of the guide rail 14 on both sides.

At the front and rear ends of the child pallet 9, hooks 17 releasably engaged with locking pieces 16 provided at the front of the parent pallet 8 and a metal used for connecting the pallet changer 4 to each other. Coupling pieces 18 are provided respectively. The front and rear hooks 17 are displaced from each other to the left and right, and even when the child pallet 9 is placed on the parent pallet 8 in the reverse direction, the hooks 17 are attached to the locking pieces 16 of the parent pallet 8. Correspondingly, they are installed at rotationally symmetrical positions with the center of the child pallet 9 as the center of rotation. Further, a plurality of positioning pieces 19 for positioning the stacked plate materials W are provided at the front and rear ends and both side ends of the child pallet 9. As shown in FIG. 6, the hook 17 of the child pallet 9 includes an engaging claw 17a that is rotatably supported by a horizontal pivot shaft 20, and an action piece 17b that extends horizontally from the engaging claw 17a. .

As shown in a plan view and a front sectional view of FIGS. 4 and 5, the pallet changer 4 is provided with a traveling body 22 mounted on a main body frame 21 so as to be movable back and forth (X direction). On both sides of the upper surface of the main body frame 21, there are provided guide rails 23 made of chevron steel which also serve as guides for the traveling body 22 and the child pallet 9, and the traveling body 22 is installed by guide rollers 24 on both sides so as to be freely movable. The traveling body 22 is connected to a pair of left and right endless chains 25, and is driven to move back and forth by its rotation. The endless chain 25 is mounted on sprockets 26 in front of and behind the main body frame 21, and the sprockets 26 are driven by a changer traveling motor 27 via a transmission mechanism 28.

Child pallet coupling devices 29 made of electromagnets are provided at positions corresponding to the metal coupling pieces 18 of the child pallet 9 on both sides of the front surface of the traveling body 22, and the child pallet 9 is attached to the center of the front surface. An engagement / disengagement mechanism 30 for engaging / disengaging the hook 17 with the locking piece 16 of the parent pallet 8 is provided. The engagement / disengagement mechanism 30 has an inverted L-shaped pressing piece 32, which is pressed against the working piece 17b of the hook 17, connected to the tip of the lifting rod 31a of the lifting cylinder 31 installed upward as shown in FIG. It is a thing. The vertical piece portion 32 a of the pressing piece 32 is provided with a left and right guide roller 33 that contacts the back surface of the action piece 17 b of the hook 17, and an upper and lower guide roller 34 that contacts the engaging claw 17 a. The elevating cylinder 31 can be moved forward and backward by a front and rear pressing cylinder 37 installed on the traveling body 22. At the front end of the main body frame 21, a parent pallet coupling device 35 made of an electromagnet is provided as shown in FIG.

The operation of the above configuration will be described. A case where the child pallet 9C is unloaded from the loading / unloading position 11A will be described. The stacker crane 3 that has pulled out the parent pallet 8 from the shelf 2a of the rack 2 moves in the Y direction toward the target loading / unloading position 11A. When a sensor (not shown) detects that the child pallet 9C to be pulled out on the parent pallet 8 has reached a position facing the corresponding pallet changer 4 as shown in FIG. The parent pallet coupling device 35 operates to fix the parent pallet 8 to the main body frame 21 of the pallet changer 4.

Next, as shown in FIG. 7, the traveling body 22 of the pallet changer 4 approaches the parent pallet 8 side, the child pallet coupling device 29 on the front surface of the traveling body 22 operates, and the child on the parent pallet 8 is activated. The metal joining pieces 18 of the pallet 9C are joined together. In this state, the engagement / disengagement mechanism 30 of the traveling body 22 comes under the hook 17 of the child pallet 9C. Then, the elevating cylinder 31 of the engaging / disengaging mechanism 30 is raised, and the action piece 17b of the hook 17 is pushed up by the pressing piece 32. As a result, as shown by the solid line in FIG. 3C, the hook 17 that has engaged the locking piece 16 on the parent pallet 8 side and stopped the child pallet 9C on the parent pallet 8 is shown by the chain line. As shown, the hook 17 is released from the engagement with the locking piece 16. Therefore, the child pallet 9C can be pulled out to the pallet changer 4 side.

Prior to the lifting of the elevating cylinder 31, the front / rear pressing cylinder 37 applies pressure in the direction of pushing the child pallet 9C. As a result, the rear hook 17 is pressed against the rear locking piece 16 of the child pallet 9, and a gap is created between the front locking piece 16 and the hook 17, and the hook 17 is It is easy to rotate upward. That is, since the plate material W loaded on the child pallet 9 is a heavy object, if the hook 17 is strongly pressed against the locking piece 16, it is difficult for the hook 17 to rotate, but the gap is left open as described above. Can be rotated lightly by. After releasing the hook 17 in this manner, the traveling body 22 is moved backward by driving the changer traveling motor 27. As a result, the child pallet 9C coupled to the traveling body 22 is transferred from the guide rail 14 of the parent pallet 8 to the guide rail 23 of the pallet changer 4 and pulled out onto the pallet changer 4.

When the child pallet 9C on the pallet challenger 4 is stored, it is returned to the parent pallet 8 on the stacker crane 3 and the parent pallet 8 together with the parent pallet 8 on the stacker crane 3 in the reverse order of the carry-out operation. .

According to this pallet-type storage / transportation facility 1, since a plurality of child pallets 9 are placed on the parent pallet 8 and stored in the rack 2 and the plate material W is placed on each child pallet 9 as described above, Even if the size of W is different, the rack 2 can be set by appropriately setting the number and size of the child pallets 9 to be placed on the parent pallet 8 while keeping the size of each shelf 2a of the rack 2 constant. It can be stored efficiently without wasting space.

[0019]

[Effect of device]

 The pallet-type storage / transportation equipment of this invention has a plurality of child pallets placed side by side on a parent pallet, stores the parent pallet on a rack shelf, and also has a pallet changer that moves the child pallet back and forth at a predetermined position from the parent pallet. Since it is provided, the size of the child pallet and the number of sheets to be loaded on the parent pallet can be variably set according to the size of the plate material loaded on the child pallet. Therefore, a large plate material can be stored, and even a small plate material can be stored space-efficiently.

When the child pallet is provided with the guide roller and the hook for engaging the parent pallet, and the pallet changer is provided with the child pallet coupling device and the hook engagement / disengagement mechanism on the traveling body, the parent pallet is mounted on the parent pallet. The child pallet can be prevented from moving and the child pallet can be smoothly taken in and out of the parent pallet.

[Brief description of drawings]

FIG. 1 is a plan view of a plate material processing line using a pallet type storage / transport facility according to an embodiment of the present invention.

2A is a side view showing a parent pallet in a state where a child pallet is placed in the same pallet type storage / transport facility, FIG. 2B is a plan view of the same pallet, and FIG. 2C is a rear view of the same pallet. is there.

3A is a side view of the same child pallet, FIG. 3B is a plan view of the same child pallet, and FIG. 3C is a front view of the same child pallet.

FIG. 4 is a partially cutaway plan view of a pallet changer in the pallet type storage / transport facility.

FIG. 5 is a front sectional view of the pallet changer.

FIG. 6 is a perspective view showing a relationship between an engagement / disengagement mechanism and hooks of a child pallet in the pallet changer.

FIG. 7 is an explanatory view showing a pallet transfer operation by the pallet type storage / transport facility.

[Explanation of symbols]

1 ... Pallet type storage / transport facility, 2 ... Rack, 2a ... Shelf,
3 ... Stacker crane, 4 ... Pallet changer, 8 ...
Parent pallet, 9, 9A, 9B, 9C ... Child pallet, 11
A, 11B, 11C ... loading / unloading position, 14 ... guide rail, 15a, 15b ... guide roller, 17 ... hook, 2
2 ... traveling body, 29 ... child pallet coupling device, 30 ... engagement / disengagement mechanism

Claims (2)

[Scope of utility model registration request] 1. A parent pallet to be placed on each shelf of a rack, a plurality of child pallets that are placed side by side on the parent pallet and can be drawn back and forth, and a parent pallet of an arbitrary shelf A pallet type storage / transport facility equipped with a stacker crane for transporting child pallets to a loading / unloading position and a pallet changer for loading / unloading a child pallet to / from a parent pallet at the loading / unloading position. 2. The child pallet has a guide roller guided in the pull-out direction by a guide rail of the parent pallet, and a hook which is detachably engaged with the parent pallet, and the pallet changer advances and retracts in the pull-out direction. 2. The pallet-type storage / conveyance facility according to claim 1, wherein the traveling body is provided with a child pallet connecting device for connecting a child pallet and an engagement / disengagement mechanism for engaging / disengaging the hook.