JPS6362297B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a work material conveying device suitable for transporting a press secondary work material to the next press work step.

If there is a distance between the end point of the take-out of the processed material taken out by the take-out device from the press machine in the previous process and the supply start point of the processed material fed by the feed device to the press machine in the post-process, the conveyor, Other transport devices are commonly used. In addition, if the material to be processed needs to be reversed 180 degrees before being sent, a reversing device is used. Conventionally, when conveying the processed material as it is without reversing it, a normal conveyance device is installed, and when the processed material is conveyed after being reversed, a reversing device is installed in place of the normal conveyance device. I was fixing it. Therefore, when non-reversing conveyance and reversing conveyance are often switched in one press processing line, installation change work is troublesome and takes time.

An object of the present invention is to solve the above-mentioned problems and provide a workpiece conveyance device that can easily switch between non-reversing conveyance and reversing conveyance by replacing the jig.

To achieve this objective, the present invention rotatably connects the inner end of the first pivot arm and the inner end of the second pivot arm, and the first pivot arm and the second pivot arm
The outer end of the rotating arm is rotatably supported by a first horizontally moving member and a second horizontally moving member that are movable only in the horizontal direction. Two reversing jigs that are detachably attached, and two moving jigs that are detachably attached to the first horizontal moving member and the second horizontal moving member, respectively, are provided, and each of the jigs has a jig. Attach a suction device that sucks the processing material on the jig, keep the first and second rotating arms in a horizontal position when not in operation, and move the connected inner ends from one jig to the other when in operation. A driving force transmission means is provided to lower the material to the transfer position where the material is transferred to the jig, and return it to the horizontal position again. The workpiece is turned over 180 degrees by rotating the movable arm 90 degrees downward and in the opposite direction, and transferring the workpiece from one reversing jig to the other reversing jig in the vertical position. In the case of non-inversion transport, use a moving jig,
downward rotation and reverse rotation of the first rotation arm and the second rotation arm by a predetermined angle smaller than 90 degrees;
It is characterized in that the processed material is moved by transferring the processed material from one moving jig to the other moving jig at an approach position.

Hereinafter, the present invention will be explained in detail based on illustrated embodiments.

1 to 3 show the state in which the reversing jig or the moving jig for holding the workpiece is removed. Main body 1
is fixed to the press machine's bolster, etc. A drive shaft 2 connected to a power source such as a crankshaft of a press is rotatably supported by a bearing 3 within the main body 1, and its tip protrudes from the main body 1. A retraction shaft 4 is provided parallel to the drive shaft 2, and driving force is transmitted by gears 5 and 6. A rack gear 7 meshes with the gear 6, and the rack gear 7 is connected to a rod of an air cylinder 8. Air cylinder 8
serves as a return spring.

A horizontal guide rail 9 is fixed to the main body 1,
The rollers 12 and 13 of the first horizontally moving member 10 and the second horizontally moving member 11 are rotatably fitted into the guide rail 9 . Thereby, the first horizontally moving member 10 and the second horizontally moving member 11 are guided so as to be movable only in the horizontal direction. First horizontally moving member 10
And the second horizontally moving member 11 has a brake 14,
15 is fixed, and the brakes 14 and 15 come into frictional contact with built-in brake drums 16 and 17. Pins 18 and 19 are fixed to the brake drums 16 and 17. As a result, normally the pins 18 and 19 are fixed to the first and second horizontally moving members 10 and 11 without rotating, but if a rotational force exceeding a predetermined level is applied from the outside to the pins 18 and 19, the brake 14,15
Slippage occurs between the brake drums 16 and 17, and the pins 18 and 19 rotate.

The outer end 20a of the first rotating arm 20 is rotatably supported by the pin 18. Similarly, pin 1
9 rotatably supports the outer end portion 21a of the second rotating arm 21. As shown in FIG. The inner end 20b of the first rotating arm 20 and the inner end 2 of the second rotating arm 21
1b is rotatably connected by a link 22 and pins 23 and 24.

A driven shaft 4 and a driving shaft 2 projecting forward from the main body 1
The inner end portions of links 25 and 26 are respectively fixed to the tip portions of , and pins 27 and 28 are fixed to the outer end portions of links 25 and 26, respectively. The pin 27 is rotatably connected to the center of the first rotating arm 20 , and the pin 28 is rotatably connected to the center of the second rotating arm 21 . Recesses 29 and 30 to which a reversing jig (described later) are attached are provided in the first rotating arm 20 and the second rotating arm 21, respectively. The recesses 29 and 30 have screw holes 31 and 32. The tips of the pins 18 and 19 serve as attachment portions 33 and 34 to which a moving jig (described later) is attached, and have screw holes 35 and 36.

FIG. 4 shows a state in which the reversing jigs 37 and 38 are attached. The reversing jigs 37 and 38 have a square frame shape, and are inserted into the recess 2 with screws 39 and 40 (Fig. 6).
It is fixed at 9,30. The reversing jigs 37 and 38 include first ones that hold the workpiece 41 by vacuum suction.
The adsorber 42 and the second adsorber 43 are the holders 44 and 45
Attached by 46 and 47 are processed materials 4
This is a guide pin for positioning 1 and is retractably attached.

FIG. 5 shows a state in which the moving jigs 48 and 49 are attached. The moving jigs 48 and 49 have a U-shaped planar shape, and are attached to the pin 1 by screws 50 and 51.
It is fixed to the mounting parts 33 and 34 of 8 and 19. Similar to the reversing jigs 37 and 38, the first suction device 52, the second suction device 53, the holders 54 and 55, and the guide pin 5
It has 6,57. Processing material 4 in horizontal position
The position 1 is the same as that of the reversing jigs 37 and 38.

First, the reversal conveyance operation will be explained with reference to FIGS. 6 to 8. When not in operation, the links 25 and 26 are in the horizontal position shown in FIG. 6, whereby the first rotating arm 20 and the second rotating arm 21 are stopped in a horizontal position aligned on the same horizontal plane. There is. When the arm of a take-out device (not shown) takes out the processed material 41 from the press, carries it, and places it on the reversing jig 37, the first suction device 4 is placed under the control of a control device (not shown).
2 starts suction operation and holds the processing material 41. At the same time, the drive shaft 2 rotates clockwise in FIG. 6, and the driven shaft 4 rotates counterclockwise. Therefore, as shown in FIG. 7, the links 25 and 26 rotate in opposite directions to each other, moving the first and second horizontally moving members 10 and 11 inwardly while rotating the first rotating arm. 20 and the connected inner ends 20b and 21b of the second rotating arm 21 are pulled down. When the drive shaft 2 rotates 90 degrees, the first rotating arm 20 and the second rotating arm 21 reach the vertical position shown in FIG. 8 and are in an overlapping state. At this point, the clockwise rotation of the drive shaft 2 stops.

When a sensor such as a limit switch (not shown) detects that the vertical position has been reached, the first suction device 42 releases the workpiece material 41, and at the same time, the second suction device 43 adsorbs the workpiece material 41. Therefore, the workpiece 41 is transferred from the reversing jig 37 to the reversing jig 38.

From the vertical position shown in FIG.
Since it is rotated 90 degrees counterclockwise, the first and second rotating arms 20 and 21 return to the horizontal position shown in FIG. 6 through the position shown in FIG. 7. As a result, the processing material 4
1 rests in the position shown by the two-dot chain line in FIG. 6, inverted 180 degrees. In this position, the second suction device 43 releases the suction of the processing material 41.

Next, the non-reversing conveyance operation will be explained with reference to FIGS. 9 to 11. As the drive shaft 2 rotates clockwise, the connected inner ends 20b and 21b of the first rotating arm 20 and the second rotating arm 21 are pulled down, and the first and second horizontally moving members 10 and 11 are moved inward. When the moving jigs 48 and 49 move toward each other, the moving jigs 48 and 49 move horizontally toward each other. When the drive shaft 2 rotates by a predetermined angle of about 80 degrees, the first and second rotating arms 20,
21 reaches the delivery position shown in FIG.
The moving jigs 48 and 49 approach each other, and the workpiece 41 is equally distributed on the two moving jigs 48 and 49. At this point, the clockwise rotation of the drive shaft 2 stops.

When a sensor such as a limit switch (not shown) detects that the transfer position has been reached, the first suction device 52 releases the suction of the workpiece 41, and at the same time, the second suction device 53 suctions the workpiece 41.
Therefore, the processing material 41 is transferred from the moving jig 48 to the moving jig 49.

From the transfer position shown in FIG. 11, the drive shaft 2 rotates in the opposite direction, so that the first and second rotating arms 20, 21 return to the horizontal position shown in FIG. 9. As a result, the processed material 41 remains at the position shown by the two-dot chain line in FIG. At this position, the second adsorber 53
releases the adsorption of the processing material 41. This moving distance is equal to the reversing conveyance distance shown in FIGS. 6-8.

The brakes 14 and 15 operate during non-reversing conveyance. Since their functions are the same, the function of the brake 14 will be explained with reference to FIGS. 12 and 13. When the first rotating arm 20 returns to the horizontal position, the contact piece 58 attached to the moving jig 48 hits the stopper 60 fixed to the support member 59, as shown in FIG. A counterclockwise rotational force greater than a predetermined value is applied to pin 18, causing pin 18 to rotate slightly to the left. Therefore, when the workpiece 41 is placed on the moving jig 48, it is held slightly upward with respect to the horizontal movement line 61. Thereby, the tip of the processed material 41 does not hit the moving jig 49 at the delivery position.

When the first rotating arm 20 rotates to the delivery position shown in FIG. 13, the contact piece 58 hits another stopper 62, which applies a clockwise rotational force of more than a predetermined amount to the pin 18. 18 rotates slightly to the right. Therefore, the tip of the workpiece 41 descends and rests on the moving jig 49.

According to this embodiment, it is possible to switch between reversing conveyance and non-reversing conveyance simply by replacing the reversing jigs 37 and 38 and the moving jigs 48 and 49, which simplifies the switching operation and reduces the switching time. can be shortened. Further, since the rotation angles of the links 25, 26 and the first and second rotating arms 20, 21 are at most 90 degrees, the operating speed can be increased.
Furthermore, since the movement of the movable part is performed below the guide rail 9, even if the arm of the take-out device starts moving before it escapes from above the jig, it will not hit the arm, reducing the time required to transport the workpiece 41. can be shortened.

In this embodiment, the gears 5 and 6, the driven shaft 4, and the links 25 and 26 correspond to the driving force transmission means of the present invention.

In this embodiment, the first and second adsorbers may be electromagnets if the processed material 41 is a magnetic material.

As explained above, the present invention rotatably connects the inner end of the first rotating arm and the inner end of the second rotating arm, and the outer side of the first rotating arm and the second rotating arm. The end portion is rotatably supported by a first horizontally moving member and a second horizontally moving member that are movable only in the horizontal direction, and is detachably attached to the first rotating arm and the second rotating arm, respectively. Two reversing jigs and two moving jigs that are removably attached to the first horizontal moving member and the second horizontal moving member, respectively, each of the jigs having:
Attach a suction device to adsorb the processed material on the jig,
The first and second rotating arms are kept in a horizontal position when not in operation, and when in operation, the connected inner ends are pulled down to the transfer position where the workpiece is transferred from one jig to the other. A driving force transmission means is provided to return the first rotating arm and the second rotating arm to the horizontal position.
Invert the workpiece 180 degrees by rotating the rotating arm 90 degrees downward and in the opposite direction, and transferring the workpiece from one reversing jig to the other reversing jig in the vertical position. In the case of non-reversing transportation, use a moving jig to rotate the first and second rotating arms downward at a predetermined angle smaller than 90 degrees and in the opposite direction. The method is characterized in that the workpiece is moved by moving the workpiece, and transferring the workpiece from one moving jig to the other moving jig at an approaching position. Reversal conveyance can be easily switched by replacing the jig.

[Brief explanation of drawings]

Figure 1 is a plan view of an embodiment of the present invention with the jig removed, Figure 2 is a front view, Figure 3 is a side view, and Figure 4 is a side view of an embodiment of the invention. ,
Plan view showing the state in which the reversing jig is attached, No. 5
The figure is a plan view showing an embodiment of the present invention in which a moving jig is attached, FIGS. 6 to 8 are front views showing different states of the reversing conveyance operation, and FIGS. FIGS. 12 and 13 are front views showing different states of the non-reversing conveyance operation, and partial front views showing the function of the brake. 1... Main body, 2... Drive shaft, 4... Driven shaft,
5, 6... Gear, 9... Guide rail, 10...
A first horizontally moving member, 11... a second horizontally moving member,
12, 13...roller, 18,19...pin, 2
0...First rotating arm, 21... Second rotating arm, 20a, 21a... Outer end, 20b, 21
b... Inner end, 25, 26... Link, 29,
30... Recessed part, 33, 34... Mounting part, 37, 3
8...Reversing jig, 41... Processing material, 42...
First adsorption device, 43... Second adsorption device, 48, 49...
...Movement jig, 52...First adsorption device, 53...Second adsorption device.

Claims (1)

[Claims] 1 The inner end of the first rotating arm and the inner end of the second rotating arm are rotatably connected, and the outer ends of the first rotating arm and the second rotating arm are moved only in the horizontal direction. two reversing jigs rotatably supported by the first and second horizontally movable members and detachably attached to the first and second rotary arms, respectively; The first horizontally moving member and the second horizontally moving member are each provided with two moving jigs that are detachably attached to each other, each of the jigs is equipped with a suction device that sucks the processing material on the jig, and The first rotating arm and the second rotating arm are kept in a horizontal position when not in operation, and when in operation, the connected inner ends are pulled down to a transfer position where the processed material is transferred from one jig to the other jig.
A processing material conveying device provided with a driving force transmission means for returning the material to a horizontal position.