JPH06340332A - Work reversing device - Google Patents

Abstract

PURPOSE:To reverse a work automatically without using any clamping device, etc., capable of holding the work from both sides to prevent damage to the work by providing a reversing frame body reversible about the axis along one side at the bottom of it. CONSTITUTION:A pallet comprises a carrying-in/out conveyer 3 which can convey a work selectively to at least two systems of conveying routes and a reversing frame body 10 capable of storing and holding the pallet conveyed from one system of the carrying-in/out conveyer 3 on the underside of it. The reversing frame body 10 is provided with a work conveying tool 5 capable of carrying in works from the front under the condition reversed by approximately 90 deg. about the axis along one side at the bottom of it. Also the pallet is carried into the frame body 10 through the pallet conveyer 2 and carrying-in/out conveyer 3, and the frame body 10 is reversed by a hydraulic cylinder 6. Then the pallet is carried from the work conveying tool 5 on which a work is mounted into the frame body 10, and the frame body 10 is reversed again to a reference position by the hydraulic cylinder 6. Thus the work slides gradually to the pallet and positioned on it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reversing device capable of placing a work on a pallet in a state of reversing the work by approximately 90 degrees.

[0002]

2. Description of the Related Art Conventionally, there is a case where it is necessary to place a work having a large weight on a pallet by reversing its axis by 90 degrees. In particular, in the production of sheet-shaped products, processing lines, etc., these sheets are wound to produce roll-shaped workpieces, and when these workpieces are stacked in multiple stages with their axis lines horizontal, they deform and become the sheet itself. Wrinkles and bends may occur.

In order to prevent such a problem, a roll-shaped work is placed on a pallet while being inverted with its axis being vertical and stored.

[0004]

However, in order to invert a roll-shaped work that has been stored in a laid state, it is usually reversed by using a clamp device or the like that can hold the work from both sides. Depending on the material of the work, it may be scratched when clamped, which may reduce the product value. Therefore, by hand,
There was no choice but to handle it carefully, and the workability was extremely poor, and there was a long-felt demand for automation.

The present invention has been devised in view of the above problems, and an object thereof is to provide an apparatus capable of automatically reversing a work and placing it on a pallet without damaging it.

[0006]

According to the present invention, there is provided a carry-in / carry-out conveyor capable of selecting and carrying a pallet in at least two carrying paths, and a pallet carried from one carrying path of the carry-in / carry-out conveyor. A reversing frame body that can be stored and held at a lower surface position, and the reversing frame body is provided so as to be reversible by approximately 90 degrees about an axis line along one side of the bottom side thereof, and can carry a work from the front in the reversing state It is a work reversing device that comprises and.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show an overall side view and a plan view of an embodiment of the present invention, respectively. In the figure, the work reversing device 1 is a pallet conveyor 2 in this example,
A loading / unloading conveyor 3 arranged substantially continuously with the pallet transporting conveyor 2, an inverting section 4 having a frame frame 10 which can be inverted with the shaft center of the bearing section 9 as a fulcrum, and a roll shape on the inverting section 4. Of the work (hereinafter, simply referred to as a work).

The pallet transfer conveyor 2 comprises a belt conveyor 11 driven by an electric motor, and is configured to supply an empty pallet on which no work has been loaded yet to the reversing section 4.

As shown in FIGS. 3 and 4, the carry-in / carry-out conveyor 3 includes a machine frame 15 fixed to the ground, and a sliding shaft 32 vertically fixed and supported by brackets 31 on both right and left sides of the machine frame 15. And an elevating frame 29 movably supported up and down with respect to the sliding shaft 32 and having roller conveyors 21, 22 and 23 on the upper surface thereof.

The elevating frame 29 includes a horizontal member 29A and a supporting plate 2
4 and a plurality of vertical frames 29B connecting them, and the upper surface of the support plate 24 is provided with three rows of roller conveyors 21, 22, and 23 in this example. As shown in FIG. 3, these three rows of roller conveyors 21, 22, and 23 are each divided into three in this example, and the work is conveyed to the gap portion in a direction orthogonal to the conveyance direction of the roller conveyor 21 or the like. A possible belt conveyor section 20 is provided.

The belt conveyor section 20 includes an electric motor 18 and
Belt 1 for transmitting this torque to belt conveyor section 20
9 and 9. The electric motor 18 is fixedly supported by the underframe 17 fixed to the machine frame 15.

A bearing portion 33 having a built-in thrust bearing and the like is attached to the vertical frame 29B of the elevating frame 29 so that it can slide smoothly on the sliding shaft 32.

A pillar 16 is erected and fixed to the machine frame 15, and a hydraulic cylinder 25 is pivotally mounted on the pillar 16 so as to swing the piston rods in opposite directions. The piston rod of the hydraulic cylinder 25 is connected to a lever 26, and the lever 26 is connected to the connecting shaft 3 with a key or the like.
It is firmly fixed to 0. The connecting shaft 30 is rotatably supported by a plurality of pillow units 34, and at both ends thereof, an arm 27 having a tip end supporting a roller 28 is fitted. The roller 28 supports the lower surface of the horizontal member 29A of the elevating frame 29.

Therefore, the elevating frame 29 can be moved up and down by expanding and contracting the piston rod of the hydraulic cylinder 25. That is, when the piston rod of the hydraulic cylinder 25 is contracted, the roller 28 is located at a low position,
The elevating frame 29 is in a lowered state, and the roller conveyor 2
The upper surfaces of the rollers 1, 22 and 23 are arranged so as to be located lower than the belt height of the belt conveyor section 20. Therefore, in such a state, the work is conveyed by the belt conveyor unit 20.

On the other hand, when the piston rod of the hydraulic cylinder 25 is extended, the lever 26, the connecting shaft 30 and the arm 27 rotate, the roller 28 pushes up the elevating frame 29, and the rollers of the roller conveyors 21, 22, 23. The upper surface height rises above the belt height of the belt conveyor section 20. Therefore, in this case, the work is conveyed by the roller conveyors 21, 22, and 23.

Next, the inverting section 4 will be described in detail. The reversing unit 4 includes a machine base 7 fixed on the ground and a bearing unit 9 on the machine base 7.
Frame frame 10 that can be flipped through at an angle of approximately 90 degrees
And a hydraulic cylinder 6 that can reversely drive the frame 10.

For convenience of explanation, as shown in FIG. 1, the frame 1 in which the piston rod of the hydraulic cylinder 6 is extended.
The state of 0 is referred to as the “falling position”, and the state of the frame 10 with the piston rod of the hydraulic cylinder 6 contracted is referred to as the “reference position”.

5 and 8 show the details of the reversing unit 4, FIG. 5 showing the falling position, and FIG. 8 showing the reference position. In the figure, a frame frame 10 has a frame structure composed of a frame in which each side of a cube is assembled with steel, and a conveyor frame 50 that can be moved up and down by a lifter 52 such as a jack or a pantograph on the lower surface at a falling position. Equipped with. On the upper surface of the conveyor frame 50, two roller conveyors 51 are arranged in parallel in this example.

Further, in the overturned state, the support base 55 is fixedly installed substantially in the middle of the frame 10. Support base 55
Also, similarly to the conveyor frame 50, the roller conveyor sections 51 are arranged in two rows on the upper surface thereof. The conveyor frame 50,
Abutting plates 53 are vertically fixed to the support base 55 in order to prevent the works R from falling sideways when the works R are respectively placed.

Further, at the lower part of the frame 10, there is provided a bearing portion 9 consisting of a support shaft 45 protruding and fixed to the left and right, and a pillow unit 44 for rotatably supporting the support shaft 45,
The bearing portion 9 is fixedly supported by the machine base 7. In addition, machine stand 7
A cushion rubber 61 is provided on the side of the frame 10 in order to reduce the impact caused by the contact with the frame 10.

The support base 55 is formed in a vertical direction when viewed at the reference position shown in FIG. The two corners and one lower corner are supported by the frame frame 10, and the one corner 55B is located in a state of being separated from and contacting the frame frame 10. As is clear from FIG. 8, the vertical surface side including one corner 55B of the frame 10 is open.

Further, when the frame 10 is viewed from the reference position, the horizontal members 10B and 10C are provided on the lower surface of the frame members 10A and 1C.
It is installed between 0A and can carry the pallet P mentioned later by this cross member 10B, 10C.

A pallet holder 4 is provided near the cross member 10C.
9 is provided. As shown in FIG. 7, the pallet receiver 49 includes a worm shaft 48 that can be rotated by operating a handle 47, a worm wheel 66 that meshes with the worm shaft 48, and a screw shaft 62 that is integrally fixed to the worm wheel 66. And a support plate 64 which is welded to one end of the screw shaft 62 and can hold the end surface of the pallet P.

The screw shaft 62 is rotatably supported by upper and lower plate members of a bracket 65 each having a screw groove, and the bracket 65 is fixed to the frame member 10A. Therefore, when the handle 47 is rotated in any direction, this is decelerated and transmitted to the worm shaft 62, and the bracket 65
On the other hand, the worm shaft 62 can be moved up and down in the figure.

In this example, as shown in FIGS. 1, 2 and 5, the roll pushing tool 12 which can be located on the side of the reversing portion 4 at the falling position is exemplified. The roll pusher 12 includes a frame 60 fixed to the machine base 7,
A push plate 57 which is expandable and contractible in the direction of the reversing portion 4 is provided above and below the frame 60.

The push plate 57 has a flat plate shape and includes a rotatable roller 58. Further, it can be expanded and contracted by the hydraulic cylinder 56 and smoothly guided by the guide shaft 59. The roll pusher 12 includes a support base 55 and a conveyor frame 50.
It is particularly effective when the work R placed on the work piece has a small diameter, and the piston rod of the hydraulic cylinder 56 can be extended to roll the work R to the position where it abuts the abutment plate 53 by the push plates 57 and 58. .

At this time, since the roller 58 is rotatably supported on the front surface of the pressing plate 57, friction between the work R and the pressing plate 57 does not occur, and the work R is not damaged. Can be prevented.

Next, the work transfer tool 5 shown in FIGS. 1, 2 and 6 will be described. The work transfer tool 5 is composed of a frame 36 having wheels 35 capable of traveling on the rail 14 laid on the ground, and a loading platform 39 linked to the frame 36 via a pantograph mechanism 38 as an elevating means. ing.

The wheel 35 is connected to the electric motor M fixed to the frame 36 by a chain 37, and is capable of self-propelled along the rail 14. In addition, the pantograph mechanism 38
Although not shown in the figure, a hydraulic cylinder is attached to one of the links, and the platform section 39 can be raised.

The loading platform 39 includes a receiving piece 41, a plurality of rollers 43 arranged on the upper surface of the receiving piece 41, and a guide piece 43 having a supporting surface inclined downward toward the inside, and the receiving piece 41.
And a fence body portion 40 covering the periphery of the three sides. The work R is fed to the roller 43 at a supply station (not shown) or the like.
Mounted on top, the roller 43 can be driven by an electric motor not shown.

The operation of the present invention configured as above will be described. First, the reversing unit 4 contracts the piston rod of the hydraulic cylinder 6 to keep it in the reference position. In this state, as shown in FIG. 9, the carry-in / carry-out conveyor 3 is located between the horizontal members 10B and 10C that are installed between the frame members 10A on the lower surface side of the frame 10.

Further, the work R placed on the belt conveyor 11 side of the pallet transfer conveyor 2 is not loaded with the pallet P.
Is conveyed into the frame 10 by the belt conveyor 11. At this time, the hydraulic cylinder 25 of the carry-in / carry-out conveyor 3 has the piston rod in a contracted state, and the belt conveyor unit 2 is more likely than the roller conveyors 21, 22, and 23.
0 is in a state of protruding upward.

Therefore, the pallet P is conveyed in the direction of the arrow A shown in FIG. 2 by the pallet conveyor 2 and the carry-in / carry-out conveyor 3, and the end surface of the pallet P is brought into contact with the support plate 64 of the pallet holder 49 to be positioned. The lower surface of the pallet P is supported by the horizontal members 10B and 10C. At this time, according to the shape of the work R, the handle 47 can be rotated in any direction to move the support plate 64, and the position of the pallet P can be adjusted.

When the pallet P is conveyed into the frame 10, as shown in FIG. 10, the piston rod of the hydraulic cylinder 6 is extended and the frame 10 is inverted to the overturned position. At this time, the pallet P is held by the support plate 64 on the lower surface, the horizontal members 10B, 10C on the back surface, and the end surface of the support base 55 on the front surface in FIG. .

Next, at the work supply station (not shown), the work transfer tool 5 on which the work R is loaded is transferred to the reversing section 4.
In front of, the roller 43 is driven to rotate and the work R is conveyed so as to be pushed out to the conveyor frame 50 and the support base 55 of the frame frame 10. Since the roller conveyors 51 are provided on the upper surfaces of the conveyor frame 50 and the support base 55, respectively, the work R can be smoothly received from the machine base 7.
Further, each roller of the roller conveyor section 51 may be configured to be rotatable only in one direction via a one-way clutch or the like so that the work R does not return from the frame frame 10.

In this state, the lifter 52 is raised by a predetermined amount according to the shape of the work R. Further, in this example, the pressing plate 57 of the roll pressing tool 12 provided on the side of the reversing unit 4 is projected to collectively bring the workpieces R into contact plate 53.
Then, the push plate 57 is moved toward the frame 60 side.

The frame 1 in the fall position by the above operation
As shown in FIG. 11, the piston rod of the hydraulic cylinder 6 is contracted again to reverse the frame frame 10 to the reference position. By this operation, the belt conveyor unit 51
The respective works R above are placed on the pallet P while gradually sliding.

In the hydraulic cylinder 25 of the carry-in / carry-out conveyor 3 described above, with the piston rod extended, the roller upper surfaces of the roller conveyors 21, 22, 23 are projected above the belt upper surface height of the belt conveyor unit 20, The pallet P is pushed up by the roller conveyors 21, 22 and 23.

After that, each roller conveyor 21, 22,
By rotating 23, the pallet P loaded with the work R is loaded.
2 can be carried in the direction of arrow B shown in FIG. 2 by the carry-in / carry-out conveyor 13, and the pallet carry-out conveyor 3 can be carried out from the frame frame 10.
Be delivered to. By such a series of operations, it is possible to transfer the work R stored in a state in which the axial direction is horizontal, on the pallet, with the work R being inverted by 90 degrees.

Although described in detail above, the present invention is not limited to the above embodiment, and various modifications can be made without changing the gist of the present invention. In this example, the frame 10 has two upper and lower work pieces. Although an example in which R can be placed is illustrated, if the work has a small diameter, it can be configured with 3 or 4 steps.

[0041]

As a result of adopting the above configuration, the present invention provides
It is possible to automatically reverse the work without using a clamp device or the like capable of gripping the work from both sides, and further, the work can be prevented from being damaged and the workability can be improved.

Further, since the pallet carrying path is provided with the carrying-in / carrying-out conveyor capable of allocating the pallet carrying path to at least two systems, the empty pallet supply and the work-loaded pallet can be carried by different paths, and the cycle time can be shortened. .

[Brief description of drawings]

FIG. 1 is an overall side view of the present invention.

FIG. 2 is an overall plan view of the present invention.

FIG. 3 is a front view of a loading / unloading conveyor.

FIG. 4 is a side view of the carry-in / carry-out conveyor.

FIG. 5 is a front view of a reversing frame and a roll pressing tool.

FIG. 6 is a front view of a work transfer tool.

FIG. 7 is a side view of a pallet receiver.

FIG. 8 is a perspective view of a reversing unit 4 in a standard state.

FIG. 9 is a side view (partially sectional view) for explaining the operation of the present invention.

FIG. 10 is a side view (partially sectional view) for explaining the operation of the present invention.

FIG. 11 is a side view (partially sectional view) for explaining the operation of the present invention.

[Explanation of symbols]

 1 Work Reversing Device 2 Pallet Conveying Conveyor 3 Carrying In / Out Conveyor 4 Reversing Unit 5 Work Conveying Tool 9 Bearing 10 Frame 11 Belt 12 Roll Pushing Tool 13 Pallet Carrying Conveyor

Claims (1)

[Claims] 1. A carry-in / carry-out conveyor capable of selecting and carrying a pallet to at least two system carrying paths, and a pallet carried from one system carrying path of the carry-in / carry-out conveyor can be stored and held at a lower surface position. A work reversing device comprising a reversing frame and a reversing frame provided so as to be reversible by approximately 90 degrees about an axis extending along one side of a bottom portion thereof and capable of carrying in a work from the front in the reversing state. .