JPS6317768A - Lifting gear for rack truck - Google Patents

Abstract

PURPOSE:To aim at automation in rack lifting operation, by making the holding device installed the rotatable arm pivotally supported on a block body so as to hold and release a partial rack of the rack truck housed between arms and to rotate it upward at the time of arm turning. CONSTITUTION:An arm 20 at an upper stand-by position is rotated up to a horizontal position by an air cylinder 35 and then a driving shaft is rotated, moving a pair of chains, whereby a pair of block bodies engaged to these chains goes down till a claw body 40 comes into contact with a pin body 42, and when the arm 20 goes down again, the claw body 40 goes down up to the specified position even after contacting with the pin body 42, and a link part comes to horizontality again, engaging the pin body 42 if the arm 20 goes up. Afterward, the cylinder 35 is operated by a controlling device 35A and simultaneously with upward rotation of the arm 20, a rack 31 is rotated upward as leaving it engaged with the claw body 40 intact, and in accordance with the upward rotation of the arm 20, engagement between the claw body 40 and the pin body 42 is gradually shifted down, and after rotation up to a position D, linkage is released, thus this rack 31 is supported by a spring at this turning position D so that rack lifting operation is automated.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention is a shelving device for a shelving truck, for example, a belt-like member having a predetermined shape, such as a tire tread rubber member.
The present invention relates to a shelving device for a shelf truck that can automate the work of raising shelves when loading onto the shelves of a shelf truck having a spring opening/closing function.

(Prior art and its problems) In the conventional shelving cart, for example, 30 or so shelves are loaded on the shelving cart, and before loading the parts, all the shelves on the shelving cart have their respective shelves. It rotates upward around one side and is supported while rotating upward by the spring opening/closing function. Conventionally, this shelving work of rotating a large number of shelves upward has been done by hand, one by one, and there has been no mechanical work involved. For this reason, the transportation process of the shelf truck, the shelving work process,
There was a problem in that the series of transport, shelving, and loading processes in the loading process of parts could not be completely automated.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a shelving device for a shelving truck that can automate the shelving work of a shelving truck and completely unmanned a series of conveyance, shelving, and loading processes.

(Means for Solving the Problems) A shelving device for a shelving truck according to the present invention includes a frame, and a pair of block bodies that are movable up and down along the frame and supported by the frame at a distance from each other. , a moving means for moving the block body up and down along the frame, an arm rotatably supported on the block body, a rotation means provided on the block body for rotating the arm, and a rotating means provided on each arm for rotating the arm. and a holding means capable of holding a part of the shelf on the shelf truck,
When the arm rotates, the holding means holds and releases a portion of the shelf to rotate the shelf upward.

(Function) In the shelving device for a shelf truck of the present invention, when the arm is rotated, the holding means provided on the rotatable arm pivotally supported by the block body holds the shelf of the shelf truck stored at a predetermined position between the arms. Since the shelf is rotated upward by partially holding and releasing it, the work of raising the shelf on the shelf truck can be done automatically, eliminating the need for manual work.

(Example) Next, embodiments of the present invention will be described based on the drawings.

1 to 7 are diagrams showing an embodiment of a shelving device for a shelving truck according to the present invention.

First, the configuration will be explained. In Figures 1 to 3, 1
1 is a shelving device for a shelf truck, and the shelving device 1 for a shelf truck is composed of a pair of columns 3 provided on a base 2 and spaced apart in the width direction, and upper and lower cross beams 4 supporting between the columns 3. It has a frame 5. 7 is a block body, and the pair of block bodies 7 are fixed to a substantially horizontal movable beam 8 and supported by columns 3 spaced apart from each other in the width direction via rollers 9. It is possible to move to The moving means 11 includes two pairs of sprockets 12 that are respectively pivotally supported on both ends 4a of the upper and lower cross beams 4, and a loop-shaped chain 13 that is straddled between the pair of upper and lower sprockets 12.
and a drive shaft 15 which connects the shafts of the lower sprocket 12 and has a drive gear 14 in the center, a motor 16 which is connected to the drive gear 14, and which is connected to the motor 16 and controls the drive of the motor 16, which will be described later. arm height control means 16A (for example, a power supply switch and an arm position determination means) for controlling the arm height. The pair of chains 13 have locking parts 13a that lock onto the movable beam 8, and the block body 7 fixed to both ends 8a of the movable beam 8 is movable up and down along the support column 3 by driving the motor 16. be.

One block body 7a is composed of a block part 18 that moves up and down along the support column 3, and a support part 19 that is fixed to the block part 18 and rotatably supports one arm 20a. As shown in FIG. 4, the other block body 7b includes a block part 23 that is movable up and down along the support column 3 and supports two guide bars 22 in the width direction, and a block part 23 that supports two guide bars 22 in the width direction. Support part 2 that is movable in the width direction
It consists of 5. The support part 25 rotatably supports the other arm 20b, and the support part 25 supports the first arm 20b in the width direction by a rod 24a of an air cylinder 24 fixed to the block part 23.
It has an arm width adjustment function that moves to a position 25c shown by a two-dot chain line in the figure and adjusts the width L2° between the other arm 20b and one arm 20a. Air cylinder 24
An arm width control means (for example, an air control valve) 24A is connected to the arm width control means (for example, an air control valve) 24A to control supply and exhaust to the air cylinder 24.

A pair of arms 20 (20 represents 20a and 20b) are the lower parts 19a of the support part 19 of one block body 7a and the support part 25 of the other block body 7b.
It has a rotation center A at 25a and is rotatably supported and protrudes forward. A shelf truck 30 is stored in a predetermined position between the pair of arms 20 protruding forward, and the shelf truck 30 has three
Two shelves 31 are loaded.

Also, position sensor 30A and width sensor 30! 1 is provided to detect the position of the shelf truck 30 and the width of the shelf truck 30. The shelf 31 has a rotation center B at its rear part 31a on a rear frame 32 provided on the rear part 30a of the shelf truck 30, and is pivotally supported so as to be pivotable upward about the rotation center B.

The shelf 31 is supported by a spring (spring opening/closing mechanism), not shown, so that it is stably supported at both the horizontal position C and a predetermined rotational position rotated upward. The rotation center B of the shelf 31 is spaced forward from the rotation center A of the arm 20 by a predetermined distance iL.

34 is a rotating means, and the rotating means 34 is connected to the upper parts 19b and 2 of the support parts 19 and 25 of the block body 7, respectively.
The air cylinder 35 is rotatably supported by the arm 5b and connected to a rotation control means (for example, an air control balance) 35A, and a rod 36 whose tip 36a engages with the central portion 20c of the arm 20. The air cylinder 35 includes rotation control means 35. are connected to each other to control supply and exhaust to the air cylinder 35. The rod 36 expands and contracts by supplying and exhausting air to and from the air cylinder 35, and the arm 20 rotates upward from the horizontal position. The tip portions 20d of the pair of arms 20 have a 5.6
As shown in the figure, retaining means 38 are provided. The holding means 38 includes a bracket 39 that protrudes so as to intersect downward when the arm 20 is horizontal, and a lower part 39 of the bracket 39.
The arm 20 has a horizontal link portion 40a spaced apart from the arm 20 at the arm 20, and a claw body 40 rotatably supported so that the link portion 40a can rotate upward from the horizontal position. The loaded shelves 31 are separated by a predetermined interval (usually every 5 to 10 stages). On the side 31c of the front part 31b of the shelf 31, a bar-shaped pin body 42 protruding laterally is attached to a claw body 40. It is attached by a nut 43 so as to be engaged with. Claw body 4
0 constitutes a link function that holds the pin body 42 between the claw body 40 and the arm 20 when the arm 20 is horizontal.

In addition, in order to automatically operate the shelving device 1, a seventh
A control unit 50 shown in the figure is provided.

An output signal from the position sensor 30A of the shelf truck 30 and the width sensor 308 of the shelf truck 30 described above is input to the control unit 50 via the I10 boat 51. The control unit 50 is instructed to start operating the shelving device 1 in response to a signal from the position sensor 30. Width sensor 30. The width of the shelf cart 30 is detected and classified, and the arm width control means 24A of the air cylinder 24 is controlled. Further, the control unit 50 is connected to an arm width control means 24A, an arm height control means 16°, and a rotation control means 35A.
The output signal from the control unit is I10 boat 5
1. The control unit is a
, calculation, A/D conversion, and program command functions, and automatically controls the operation of the shelving device through each control means.

Next, the effect will be explained.

When the shelf truck 30 is transported by a chain conveyor (not shown) and stored in a predetermined position between the pair of arms 20 (20a and 20b) of the shelf truck shelving device 1 according to the present invention, a control unit is sent from the position sensor 30A. 5
A signal is output to 0, and the operation of the device 1 is started. The length of the shelf truck 30 in the width direction is detected by the width sensor 308 with the front end 30b as a reference, separated by Ii by the control unit 50, and outputted to the arm width control means 24A of the other block body 7b. be done. other arm 2
The widthwise position of 0b is adjusted and automatically determined by the operation of the air cylinder 24. The arm 20, which has been previously rotated upward and located at the standby position, is rotated until it reaches a horizontal position by the operation of the air cylinder 35. Next, the motor 16
is activated, and the drive shaft 15 rotates to move the pair of chains 13 that engage with the sprocket 12. The pair of block bodies 7 held by the pair of chains 13 descend until the claw bodies 40 of the arms 20 abut against the pin bodies 42.

When the arm 20 further descends, the link portion 40a of the claw body 40 is rotatably supported so that it can move upward from the horizontal position. The link part 40a of the claw body 40 becomes horizontal again.
When the arm 20 rises by 50n, it engages with the pin body 42.

Thereafter, as shown in FIG. 8, the air cylinder 35 of the rotation means 34 is operated by the rotation control means 35A, and the arm 2
0 is rotated upward, and the shelf 31 is rotated upward while the pin body 42 is engaged with the claw body 40. shelf 3
Since the rotation center B of the arm 20 is a predetermined distance away from the rotation center A of the arm 20, as shown in FIG.
As the arm 20 rotates upward, the claw body 4
0 and the pin body 42, its position gradually shifts and the shelf 3
1 rotates to a predetermined upper rotation position, the link mechanism is released. At a predetermined rotational position, the shelf 31 is stably supported by a spring (not shown).

The arm 20 returns to the horizontal position again and is lowered by the moving means 11 to the position of the pin body 42 of the next lower shelf 31 to engage it. The shelving device 1 of the shelving cart performs the above-mentioned operation on the lowest floor f.
'1l131' is repeated until all the shelves 31 on the shelf cart 30 are rotated upward, and the shelving process is completed. Arm 2
0 waits for the next shelf cart to return to the upper waiting position. The shelving cart 30 that has completed the shelving process is transported by a chain conveyor (not shown).

(Effects) As explained above, according to the present invention, the shelving work of the shelving cart can be automatically operated without using human power, and the series of conveyance, shelving, and loading processes can be completely automated. can.

[Brief explanation of drawings]

1 to 8 are diagrams showing one embodiment of the hoisting device for a rack truck according to the present invention, FIG. 1 is a front view thereof, and FIG. 2 is a first
3 is a side view of FIG. 1, FIG. 4 is an enlarged front view of the other block body 7b, and FIGS. 5.6 are an enlarged side view and an enlarged front view of the holding means 38, respectively. , FIG. 7 is a block diagram showing the overall configuration of the control device, and FIG. 8 is a diagram for explaining its operation. 1...Shelving device for shelf truck, 2...Foundation, 3...Strut, 4...Horizontal beam, 5...Frame, 7 ...Block body, 7a...One block body, 7b...The other block body, 8...Moving beam, 9... Roller, 11... Moving means, 12... Sprocket, 13... Chain, 14... Drive gear, 15... Drive shaft, 16... Motor, 18.23... Block part, 19... Support part, 19a... Lower part, 19b... Upper part, 20 ...Arm, 20a...One arm, 20b...Other arm, 20c...Central part, 20d...Tip part, 22... Guide rod, 24... Air cylinder, 24a... Rod, 25... Support part, 25a... Lower part, 25b. ... Upper part, 30 ... Shelf truck, 30a ... Rear part, 30b ... Front end, 31 ... Shelf, 31a ... ... Rear part, 31b... Front part, 31C... Side part, 32... Rear frame, 34... Rotating means, 35... ...Air cylinder, 36...Rod, 38...Holding means, 39...Bracket, 39a...Downstream part, 40...Claw body, 40a... Link part, 42... Bottle body, 43... Nut, 50... Control unit, 51...
...I10 port.

Claims (1)

[Claims] a frame, a pair of block bodies that are movable up and down along the frame and supported by the frame at a distance from each other; a moving means for moving the block bodies up and down along the frame; An arm that is freely pivoted,
a rotation means provided on the block body for rotating the arm;
Each arm is provided with a holding means capable of holding a part of the shelf on the shelf cart, and when the arm rotates, the holding means holds and releases a part of the shelf to rotate the shelf upward. Features: Shelf truck hoisting device.