JPH0420833Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for changing the direction of a conveyed object attached to a conveying device for a shaft workpiece or the like.

For example, when a crankshaft conveyed by a transfer machine is transferred to another device such as a carry-out conveyor by changing its direction in a horizontal direction perpendicular to the conveyance direction of the transfer machine, conventionally, the above-mentioned A direction changing device is disposed between the conveying device and the other device, and the direction changing device is interlocked with the conveying rod of the conveying device by an interlock mechanism, and the purpose is achieved by the linked operation of the direction changing device and the conveying rod of the conveying device. Was.

However, since the conventional direction changing device is an independent device driven by a drive device different from the above-mentioned conveying device and other devices, it is necessary to maintain a wide distance between the conveying device and other devices. First, there is a drawback that the floor area of the equipment increases, and there is also a risk of malfunction occurring in the interlock mechanism between the direction changing device and the conveying rod of the conveying device.

Here, the interlock mechanism will be explained in detail.

In the device configuration described above, this interlock mechanism is used as a control means for synchronized operation between the conveyance device and the direction change device, and between the direction change device and the conveyor. It is composed of position sensors (limit switches, etc.) for detecting control factors, and is designed to perform these sequence operations reliably to prevent collisions between devices.

More specifically, the conveyance device holds the conveyed object from an initial position and conveys it to a delivery position to the direction change device, delivers the conveyed object to the direction change device at this delivery position, and also transfers the conveyed object to the direction change device. Later, the direction changing device performs an operation of returning to the initial position, and on the other hand, the direction changing device performs an operation of changing the direction of the conveyed object from the transfer position and conveying it to a transfer position to the conveyor, and changing the direction of the conveyed object from the transfer position. In this case, an operation of transferring the conveyed object onto the conveyor and an operation of returning it to the delivery position after the transfer are performed.

During the operation of each of these devices, a constraint for the direction changing device to return to the conveyed object delivery position is that the conveying device be at the initial position.

Further, a constraint on the movement of the conveyance device to the delivery position is that the direction change device is returned to the delivery position.

Furthermore, in addition to these constraints, there are constraints on the start timing of transfer of the conveyed object and of vertical movement after transfer in synchronization with each operation.

The operation of each device is controlled by the control means under each of these constraint conditions.

Therefore, if this interlock mechanism is not operated reliably, problems such as collision between the devices described above will occur, so highly accurate control is required.

This invention was made in view of the above circumstances,
To provide a device for changing the direction of a conveyed object that does not particularly require an independent drive source, has a simple structure, occupies less floor space, and can operate reliably.

In order to achieve the above-mentioned object, the present invention has developed a receiving stand attached to a conveying device equipped with a conveying rod that is moved up and down and conveys the object to be conveyed in a fixed horizontal direction, and a receiving stand attached to another device. In a device for changing the direction of a transported object, which changes the direction of the transported object horizontally by approximately 90° between the table and the conveyance device, the connecting member is attached to the transport rod of the transport device. The connecting member is provided to be movable in a horizontal direction orthogonal to the transport direction of the apparatus, and the connecting member is provided with a receiving member that supports the transported object and is rotatable in a horizontal plane. As the conveying rod moves, the rotating arm rotates vertically and horizontally with one end as the center point, and the other end of the rotating arm moves the connecting member in an arc around the center point, and rotates horizontally relative to the receiving member. movement is prevented, and each of the pedestals is provided at intervals on both sides of the movement locus of the connecting member, and an object to be transported is placed on top of the pedestals. shall be.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. In the figure, 1 is a conveying device (direct feed type transfer machine) that conveys a crankshaft C in the conveying direction of arrow A, and a conveying rod 2 is has and also
At the terminal end, there is an arrow B (seventh arrow) perpendicular to the conveying direction A.
A carry-out conveyor 3 for carrying out the crankshaft C in the direction shown in FIG.

The conveying rod 2 of the conveying device 1 is moved up and down by a hydraulic cylinder or the like and moved in the conveying direction A, and a pair of cylindrical guide rails are provided between the side plates 2b, 2b on both sides of the end portion 2a. 4, 4 are fixedly attached horizontally with their axes oriented in the horizontal direction perpendicular to the conveying direction A, and spaced apart from each other by a predetermined distance, and these guide rails 4, 4 are provided with a through hole that penetrates vertically in the center. A rectangular parallelepiped block (connecting member) 5 is provided with a hole 5a (FIG. 4) and a pair of through holes 5b, 5b (FIG. 3) extending horizontally on both sides of the through hole 5a. The guide rails 4, 4 are inserted into the sleeve 6 through the pair of through holes 5b, 5b.
The guide rails 4 are slidably attached along the length direction of the guide rails 4, 4 by being inserted through the guide rails 4, 4. Further, the block 5 includes a receiving portion 7a, 7a for receiving the two central pin portions of the crankshaft C, and a journal receiving portion 7b located between these portions for receiving the central journal portion. A receiving member 9 consisting of a rod 8 vertically fixed to the lower part of the block 5 is rotatable in a horizontal plane by inserting the rod 8 into the through hole 5a in the center of the block 5 via a bearing 10. attached. The rod 8 is made to protrude downward from the through hole 5a, and one end 13a of the rod 8 is connected to a support seat 12 on a bracket 11 provided on the main body 1a of the conveying device 1, and the protruding end 8a is connected to the support seat 12 via a universal joint 14 so that the rod 8 can be attached to The yoke 13b at the other end of the swing arm 13, which is attached to be rotatable in both the direction and the horizontal direction, is attached to the pin 15.
The rod 8 and the swing arm 13 are mounted so as to be freely rotatable in the vertical direction, and so that there is no relative rotation between the rod 8 and the swing arm 13 in the horizontal direction.

Here, the rotation center point P1 of the one end 13a of the swing arm 13 is the center point P2 of the temporary receiving position of the crankshaft C at the terminal end of the conveyor 1, and the center point P2 of the receiving position of the crankshaft C on the conveyor 3. When the distance between P3 and P3 is L, the center point P2 of the temporary receiving position and the center point P3 of the receiving position
The right-angled bisector of the straight line connecting these center points P2 and P3 is located at a point where it intersects a straight line parallel to the straight line connecting these center points P2 and P3, separated by L/2, and
The length of the swing arm 13 is √2×L/2.

Furthermore, 16 in the figure is a cradle on which the crankshaft C is temporarily placed at the terminal end of the conveyance device 1,
A pair of brackets 16a are mounted on the main body 1a of the conveying device 1 with an interval slightly wider than the width of the conveying rod 2.
Supports 16b, 16b on which the crankshaft C is placed from above at a position higher than the transport path surface of the transport device 1 are fixed to the upper end of the support 16a.

Reference numeral 17 denotes a crank bearing stand fixed to the frame of the conveyor 3, and the crankshaft C is supported in a state in which the center line of the crankshaft C passes through the center point P3 of the receiving position and is perpendicular to the conveyance direction of the carry-out conveyor 3.
is placed from above.

The pedestal 17 is shown in FIGS.
As shown in the figure, the blocks 5 are provided on both sides of the locus of movement when the block 5 is moved in a circular arc by the swing of the swing arm 13.

The crankshaft C that has been processed by the final process machine of the production line installed along the transport device 1 is placed on the temporary cradle 16 by the transport machine attached to the machine. . When the crankshaft C placed on the temporary holder 16 is transferred to the conveyor 3 by changing its direction by 90 degrees using the direction changing device configured as described above, first, the conveyor rod 2 is raised. Then, the receiving part 7 of the receiving member 9 receives the crankshaft C on the temporary holder 16 and raises it as it is to point D in FIG. Next, the transport rod 2 is moved in the transport direction A. Then, rotating arm 1
3 is rotated in the direction of arrow E around the rotation center P1 of one end 13a, and the block 5 is rotated in the direction of arrow G up to the intermediate point F shown in the figure, and in the direction of arrow H after the intermediate point F. direction along the guide rails 4,4. Since the receiving member 9 does not rotate relative to the rotating arm 13 in the horizontal plane, the rotating arm 13 and the receiving member 9
(Crankshaft C) The relative position seen from the plane does not change even if the swing arm 13 rotates horizontally. Therefore, while the receiving member 9 is rotated relative to the block 5, As a result, the direction of the crankshaft C is changed by 90 degrees. At the same time, the block 5 and the receiving member 9 are
By being positioned between both pedestals 17,
The crankshaft C is positioned above both the pedestals 17. When the direction change of crankshaft C is completed,
The conveyor rod 2 is lowered, thereby moving the crankshaft C.
are placed on both pedestals 17 of the conveyor 3.

In this way, in the above-mentioned direction changing device, the direction of the crankshaft C is changed and transferred by the conveying operation of the conveying rod 2 of the conveying device 1.
It does not require an independent drive source, has a simple structure, and does not have an interlock mechanism, so its operation is reliable.

In addition, in the above direction change, the crankshaft C
Contact of the receiving member 9 (receiving portion 7) with the receiving stand 17 on the inner side (on the left side in FIG. 1) that receives the receiving member becomes a problem. That is, since both the pedestal 17 and the receiving member 9 protrude upward and support the crankshaft C from below, in a method in which the block 5 is simply moved linearly in the transport direction A, the pedestal 17 cannot be transported in a horizontal plane. Unless a complicated structure is adopted in which the receiving member 9 is retracted in a direction intersecting the direction A, contact of the receiving member 9 with the receiving stand 17 cannot be avoided.

However, in the present invention, after the intermediate point F, the receiving portion 7 of the receiving member 9 moves in an arcuate trajectory as shown by the arrow E in FIG. Since the receivers 7 are provided at intervals, the receivers 7 go around the receivers 17 on the inner side of the receivers and are moved to both sides of the receivers 17 to reach the delivery position. Contact of the receiving member 9 with the can be easily avoided.

This also applies to the pedestal 16 in the transport device 1.

G' in the diagram of the base 1 is the rotation locus of the receiving portion 7 (pin receiving portion 7a) closest to the rotation center point P1 of the rotating arm 13, and is separated from the inner receiving portion 17 by a distance α.

In addition, in the above, the direction of the crankshaft C sent from the conveyance device 1 is changed and transferred to the conveyor 3, but conversely, the crankshaft C or other conveyed object is transferred from the conveyor 3 or other device. It is also possible to change its direction and transfer it to the transport device 1.

As explained above, the device for changing the direction of a conveyed object according to the present invention includes a receiving stand attached to a conveying device equipped with a conveying rod that is moved up and down and conveys the conveyed object in a fixed horizontal direction, and The direction of the transported object is approximately horizontal between the cradle attached to the device.
In a device for changing the direction of a conveyed object that performs a 90° turn and transfers the conveyed object, a connecting member is provided on the conveying rod of the conveying device so as to be movable in a horizontal direction perpendicular to the conveying direction of the conveying device. , the connecting member is provided with a receiving member that supports the transported object so as to be rotatable in a horizontal plane, and the receiving member is provided with a receiving member that supports the transported object in the vertical and horizontal directions with one end as the center point due to the transporting movement of the transporting rod. The other end of the pivoting arm that rotates in the direction and moves the connecting member in an arc around the rotation center point is attached so as to be prevented from horizontal relative rotation with respect to the receiving member, and The platform is provided at intervals on both sides of the movement locus of the connecting member, and the object to be conveyed is placed on the top of the platform. The rotating arm is moved or rotated in a predetermined direction to change the direction of the conveyed object and transfer it.
It does not require an independent drive source and has an extremely simple structure. Therefore, the installation floor space can be kept small, and maintainability and workability are improved. Furthermore, since it does not have an interlock mechanism unlike the conventional one, there is no risk of malfunction and the operation is reliable.

Further, the connecting member is configured to move in an arc, and the receivers are provided at intervals on both sides of the moving trajectory of the connecting member, and the object to be transported is placed from above. Therefore, contact of the receiving member with the cradle can be easily and rationally avoided, and the structure can also be simplified in this respect.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a plan view, FIG. 2 is a side view, FIG. 3 is a sectional view taken along the - arrow in FIG. 2, and FIG. 4 is a - direction in FIG. 5 is a sectional view taken in the same direction, FIG. 6 is a sectional view taken in the same direction, FIG. 7 is a plan view including the entire conveyance device, and FIG. 8 is a side view thereof. DESCRIPTION OF SYMBOLS 1... Conveyance device, 2... Conveyance rod, 5... Block (connecting member), 9... Reception member, 13... Swivel arm, 16... Rest, 17... Rest, α... Separation distance .

Claims (1)

[Scope of utility model registration request] The orientation of the transported object is adjusted horizontally between a cradle attached to a transport device that is moved up and down and has a transport rod that transports the transported object in a fixed horizontal direction, and a cradle attached to another device. In a device for changing the direction of a conveyed object that transfers the conveyed object by changing the direction approximately 90 degrees, a connecting member is attached to a conveying rod of the conveying device and is movable in a horizontal direction perpendicular to the conveying direction of the conveying device. The connecting member is provided with a receiving member that supports the transported object and is rotatable in a horizontal plane, and the receiving member is provided with a receiving member that can be moved up and down with one end as a center point by the transporting movement of the transporting rod. The other end of the swinging arm that rotates in the direction and horizontal direction and moves the connecting member in an arc around the center of rotation is attached so as to be prevented from horizontal relative rotation with respect to the receiving member, and A device for changing the direction of a conveyed object, wherein each of the pedestals is provided at intervals on both sides of the movement locus of the connecting member, and the conveyed object is placed on top of the pedestals.