JP4352438B2 - Flat plate stock equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is provided in the middle of a flat plate processing conveyance line such as a glass substrate, a metal panel, a resin panel, a wood panel, etc., and the flat plate is temporarily stopped so as to avoid stopping the line when the processing machine is temporarily stopped. The present invention relates to a flat plate stocking device.
[0002]
[Prior art]
FIG. 5 is a conceptual diagram of a conventional flat stock device. In the figure, a is a cassette, has a multistage shelf b, and accommodates a flat plate c. The cassette a is placed on the lifting platform d, and the flat plate c is put in and out by the roller conveyor e. In order to accommodate the flat plate c in the empty cassette a, first, the cassette a is placed on the lifting platform d. The cassette a is conveyed by a fork or an adjacent conveyor (not shown). After placing the cassette a on the lifting platform d, the lifting platform d is lowered to the bottom, and the flat plate c is fed into the uppermost shelf b by the roller e. Next, the cassette a is moved up by one stage, and the flat plate is similarly fed into the second shelf b from the top. The flat plate c is similarly accommodated in the third and subsequent shelves b from the top.
[0003]
In order to take out the flat plate c accommodated in the cassette a in this way, the lifting platform d is raised to the top, and the flat plate c is taken out from the lowest shelf b by the roller e. Next, the cassette a is lowered by one stage, and the flat plate c is taken out from the second shelf b from the bottom. Similarly, the flat plate c is taken out from the third and subsequent shelves b from the bottom, and when the cassette a becomes empty, the cassette a is removed from the lifting platform d by a fork or a conveyor.
[0004]
[Problems to be solved by the invention]
If the above-described conventional flat plate stocking apparatus is provided on a flat plate conveying line such as a glass substrate and used as a buffer for temporarily stopping a processing machine or eliminating defective products, there are the following problems.
(1) Although storage and removal into the cassette a is first-in-last-out, defective products are not necessarily limited to those stored last, so it is desirable to first extract defective products stored in stages other than the lowest stage. Sometimes I can't respond.
(2) The flat plate c is removed from the cassette a by a roller conveyor and cannot be removed by a fork or a robot arm.
(3) The stock apparatus itself cannot recognize which shelf b of the cassette a contains the flat plate c.
[0005]
The present invention has been devised in view of such problems of the prior art, and provides a flat plate stock apparatus that can be loaded and unloaded from any shelf and can be loaded and unloaded by a fork or robot arm as well as a roller conveyor. The purpose is to do.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the flat plate stock device of the present invention is provided in the middle of a flat plate conveyance line, and is a flat plate stock device that can be temporarily stored in each shelf and can be taken in and out from any shelf, A lifting frame having a plurality of stages of shelves that are vertically arranged inward from the left and right, and a conveying roller that is provided in parallel with the flow direction of the flat plate from the left and right to support the flat plate at the tip. A roller conveyor having a plurality of conveyor shafts, wherein the roller conveyor is simultaneously left and right between a support position of the flat plate protruding inward and a non-support position of the flat plate retracted outside. Can be moved to.
[0007]
It is preferable to provide a guide roller with a flange for restricting the left and right movement of the flat plate in the middle of the conveyor shaft.
[0008]
Next, the operation of the present invention will be described.
In order to accommodate the flat plate in any shelf provided in the lifting frame, the height of the shelf to be accommodated is slightly lower than the height of the upper surface of the transport roller, and the roller that protrudes inward and is in the support position of the flat plate The flat plate is fed into the lifting frame by the conveyor. Thereafter, the elevating frame is raised and a flat plate is placed on the shelf. To take out the flat plate housed in the lifting frame from any shelf, first pull the roller conveyor outside to the unsupported position of the flat plate, and set the height of the lifting frame to the height of the flat plate placed on the shelf. The height is set slightly higher than the upper surface of the transport roller. In this state, the roller conveyor is protruded inward, the lifting frame is slightly lowered to support the flat plate on the conveying roller, the roller conveyor is driven, and the flat plate is sent out to the next process. In order to take out the flat plate with a fork or robot arm, the elevating frame is placed at the uppermost position, the fork is inserted under the flat plate, lifted slightly, and the flat plate is picked up and taken out.
[0009]
Thus, a flat plate can be taken in and out of an arbitrary shelf by a combination of a lifting frame having a shelf and a roller conveyor that can move to the left and right. Further, if the position of the lifting frame and the operation of the roller conveyor are recorded, it is possible to recognize which shelf is empty and which flat plate is accommodated in which shelf.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of a flat plate stock device of the present invention. In the right half of the figure, the elevating frame is in the lowest position, and the roller conveyor protrudes inward to support the flat plate. In the left half of the figure, the elevating frame is in the uppermost position, and the roller conveyor is retracted to the outside. The state in the unsupported position of the flat plate is shown. FIG. 2 is a side view taken along the line AA in FIG. FIG. 3 is a BB arrow view of FIG. FIG. 4 is a plan view of the elevating drive device as seen in the direction of arrows CC in FIG.
[0011]
In these figures, reference numeral 10 denotes a flat plate stock apparatus which is provided in the middle of a flat plate conveying line, and as a line buffer, a flat plate is temporarily stored in each shelf and can be taken in and out from any shelf. Reference numeral 1 denotes a lifting frame. The elevating frame 1 is formed in a rectangular parallelepiped by three columns 1a on the left and right provided at the four corners and in the middle, and an upper frame 1b and a lower frame 1c in which four beams are formed in a rectangle. Arms 1d project from the three pillars 1a in the vertical direction toward the inside, and a shelf 1e that supports the flat plate 2 is formed by the left and right arms 1d. Lifting guides 1 f are provided at the four upper and lower corners of the lifting frame 1 so as to project outward. The elevating guide 1 f is attached to an elevating post 3 composed of four vertically arranged cylinders via linear bearings, and the elevating frame 1 can be raised and lowered along the elevating post 3.
[0012]
4 is a basic frame. The base frame 4 is formed in a rectangular parallelepiped shape by four pillars 4a erected at four corners, and an upper frame body 4b and a lower frame body 4c formed by four beams in a rectangular shape. The elevating frame 1 is fitted so as to be movable up and down.
[0013]
Reference numeral 5 denotes an elevating device for elevating the elevating frame 1. 5a is a lifting actuator, which is a geared motor. A pulley 5b is attached to the rotating shaft of the elevating actuator 5a. Reference numeral 5d denotes a right lifting shaft that is rotatably supported by a pillow block 5h and is horizontally mounted on the lower right side of the base frame 4. A pulley 5c is attached to the right elevating shaft 5d and is connected to the pulley 5b of the elevating actuator via a timing belt 5p. When the elevating actuator 5a is rotated, the right elevating shaft 5d is rotated. A pulley 5e and a pulley 5g are attached to both ends of the right elevating shaft 5d. 5i is a left elevating shaft that is rotatably supported by a pillow block 5h and is horizontally mounted on the lower left side of the foundation frame 4. A pulley 5j is attached to the left elevating shaft 5i, which is connected to a pulley 5f attached to the right elevating shaft 5d via a timing belt 5q. When the right elevating shaft 5d rotates, The left elevating shaft 5i also rotates in the same direction. A pulley 5k and a pulley 5m are attached to both ends of the left lifting shaft 5i.
[0014]
In the vicinity of the upper four corners of the base frame 4, pulleys 4e and 5g attached to both ends of the right elevating shaft 5d and pulleys 5k and 5m attached to both ends of the left elevating shaft 5i are vertically opposed to each other. A plurality of pulleys 5n are provided, and a timing belt 5r is stretched between a pair of opposed pulleys. Four attachments 1g project outward from the four corners of the lower frame 1c of the lifting frame 1, and the right belt of the timing belt 5r is held at the tip of each attachment 1g. Therefore, when the elevating shafts 5d and 5i are rotated, the belt on the right side of the timing belt 5r is raised or lowered, and the elevating frame 1 is raised and lowered accordingly.
[0015]
Reference numeral 3 denotes an elevating post for guiding the elevating frame 1 and is erected on the base frame 4 in a cylindrical shape. Two beams 4d are laid across the inner side of the lower frame 4c of the base frame 4 and two plates 4e are sandwiched between the lower frame 4c and the beam 4d. The lower end of the elevating post 3 is fixed on the plate 4e. The upper end of the lifting post 3 is connected by four braces 3a formed in a rectangular shape to prevent the lifting post 3 from rolling.
[0016]
Reference numeral 6 denotes a roller conveyor provided on the upper portion of the basic frame 4. The roller conveyor 6 has ten conveyor shafts 6a on both the left and right sides, and the conveyor shafts 6a are provided so as to be lined up in the plate flow direction (indicated by the arrow x) from the left and right to the inside. A pulley 6b is fixed to the base end side of the conveyor shaft 6a and is rotatably supported by pillow blocks 6c on both sides thereof. A conveying roller 6d that supports the flat plate 2 is fixed to the end of the conveyor shaft 6a, and a guide roller 6e with a flange that restricts the left and right movement of the flat plate 2 is attached in the middle. The pillow block 6c is provided on a slide frame 6f composed of two beams horizontally mounted in the flow direction. Reference numeral 6h denotes a drive motor for the roller conveyor 6, which is attached to a bracket 6g suspended from the slide frame 6f. A pulley 6i attached to the drive motor 6h is connected to two pulleys 6b above the drive motor 6h via a timing belt 6j. The pulley 6b is provided with two left and right belt grooves side by side, and all the conveyor shafts 6a can be driven by alternately connecting the left and right belt grooves of the adjacent pulley 6b with the timing belt 6k. .
[0017]
Reference numeral 7 denotes a moving device for the roller conveyor 6. Reference numeral 7 a denotes a slide rail, one on each of the upstream and downstream sides of the left and right sides of the upper frame 4 b of the basic frame 4 (a total of four) is horizontally mounted in the direction perpendicular to the flow direction X. A slide frame 6f is placed on the upper surface of the slide rail 7a via a linear bearing, and the slide frame 6f is slidable left and right. Reference numeral 7b denotes an air cylinder for driving the moving device 7, and one air cylinder is provided on each of the left and right sides. 7g is a pulley provided at the outer end of the upper frame 4b of the base frame 4, 7f is a pulley provided inside the pulley 7g, and 7e and 7h are provided between the pulley 7g and the pulley 7f. It is a pulley. 7d is a pulley provided below the pulleys 7e and 7h. These pulleys 7d, 7e, 7f, 7g, and 7h are hung so that the timing belt 7c forms a T-shape. The upstream and downstream pulleys 7g and 7g are connected by a shaft 7j. The upper belt of the T-shaped timing belt 7c is gripped by an attachment 6k that protrudes from the slide frame 6f, and the belt outside the suspended portion of the T-shaped timing belt 7c is attached to the tip of the piston of the air cylinder 7b. The provided attachment 7i is gripping. Therefore, by expanding and contracting the air cylinder 7b, the belt on the upper side of the timing belt 7c moves to the left and right, and the movement becomes the left and right movement of the roller conveyor 6 through the slide frame 6f. The shaft 7j synchronizes the upstream side and the downstream side of the movement of the roller conveyor 6.
[0018]
Reference numeral 8 denotes a lift sensor (see FIG. 4). The position of the lift frame 1 is detected by detecting the rotation angle of the lift shaft 5i through the timing belt 8a by the lift sensor 8. Reference numeral 9 denotes a fork for transferring the flat plate 2.
[0019]
Next, the operation of this embodiment will be described.
In order to store the flat plate 2 in an arbitrary shelf 1e provided on the elevating frame 1, the height of the storing shelf 1e is slightly lower than the height of the upper surface of the transport roller 6d, and the flat plate 2 protrudes inward. The flat plate 2 is fed into the elevating frame 1 by the roller conveyor 6 at the support position (see the right side of FIG. 1). Thereafter, the elevating frame 1 is raised and the flat plate 2 is placed on the shelf 1e. In order to take out the flat plate 2 accommodated in the elevating frame 1 from an arbitrary shelf 1e, first, the roller conveyor 6 is drawn to the outside so as to be in an unsupported position of the flat plate 2 (see the left side in FIG. 1). The height of the flat plate 2 placed on the shelf 1e is set slightly higher than the upper surface of the transport roller 6d. In this state, the roller conveyor 6 is protruded inward, the lifting frame 1 is slightly lowered to support the flat plate on the conveying roller 6d, and the roller conveyor 6 is driven to feed the flat plate 2 to the next stroke. In order to take out the flat plate with the fork or robot arm 9, the elevating frame 1 is placed at the uppermost position, the fork or robot arm 9 is inserted under the flat plate 2, and slightly lifted to scoop out the flat plate 2 and take it out. .
[0020]
Thus, a flat plate can be taken in and out of an arbitrary shelf 1e by the combination of the elevating frame 1 having the shelf 1e and the roller conveyor 6 movable to the left and right. Further, if the position of the lifting frame 1 and the operation of the roller conveyor 6 are recorded, it is possible to recognize which shelf or robot arm 1e is empty and which plate 2 is accommodated in which shelf 1e.
[0021]
The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the scope of the invention.
[0022]
【The invention's effect】
As described above, the flat plate stock device of the present invention combines an elevating frame having multi-stage shelves and a roller conveyor that can be moved left and right to select a flat plate support position and a non-support position. A flat plate can be taken in and out of the shelf, and the apparatus adjacent to the upstream side and the downstream side can be a roller conveyor, and has an excellent effect that it can be a fork or a robot arm.
[Brief description of the drawings]
FIG. 1 is a front view of a flat plate stock device of the present invention.
FIG. 2 is a side view taken along the line AA in FIG.
FIG. 3 is a plan view taken along the line BB in FIG. 1;
4 is a plan view taken along the line CC in FIG. 1; FIG.
FIG. 5 is a conceptual diagram of a conventional flat stock device.
[Explanation of symbols]
1 Lifting frame 1e Shelf 2 Flat plate 6 Roller conveyor 6a Conveyor shaft 6d Conveying roller 6e Guide roller

Claims (2)

A flat plate stocker that is installed in the middle of a flat plate transfer line and can be temporarily stored in each shelf, and can be taken in and out from any shelf. A lifting frame having a plurality of shelves, and a roller conveyor having a plurality of conveyor shafts that are provided so as to protrude from the left and right inward in the flow direction of the flat plate and that are provided with conveying rollers that support the flat plate at the tip. The roller conveyor is capable of moving all at once between a support position of the flat plate protruding inward and a non-support position of the flat plate retracted outward. Flat plate stock equipment. 2. The flat plate stocking apparatus according to claim 1, wherein a guide roller with a flange for restricting the left and right movement of the flat plate is provided in the middle of the conveyor shaft.

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