JPS6110919Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a pallet turning device in a transfer line.The purpose of the invention is to release the restraint when carrying out the pallet that has been carried onto the turntable and is positioned with its movement restrained. This is achieved by utilizing the movement of the transfer bar, eliminating the need for a special actuator.

In a transfer machine, when a pallet carried on a turntable installed in a turnover station is turned over 90 degrees, the pallet must be positioned so that it does not move during the turn, and after the turn, the pallet must be positioned for unloading. Need to be released. Conventionally, the positioning device was operated by an actuator provided on the turntable, and the structure was complicated due to piping to the actuator.

The present invention provides a turning device that solves the above-mentioned conventional problems, and embodiments thereof will be described below with reference to the drawings.

1 is a fixed frame, 2 is a guide rail fixed along the transfer line, 3 is a transfer bar that moves forward and backward along the guide rail 2, and 4 is a feed claw that engages with the pallet 13 on which a workpiece is attached. It is. The transfer bar can also be rotated to raise and lower the feed pawl 4. 5
is a turntable, which is rotatably provided on the fixed frame 1 by a rotating shaft 7. That is, a support stand 6 is fixed to a fixed frame 1, and a rotating shaft 7 with a turntable 5 fixed to this support stand 6.
is rotatably supported. turntable 5
In this swing drive mechanism, a swing cylinder 8 is pivotally attached to the side of a fixed frame 1 with a pivot pin 9, and a link member 10 fixed to a piston rod and a rotating shaft 7 is connected to a connecting pin 11. Therefore, it is a connected structure.

A guide rail 12 on which a pallet 13 is placed is provided on the turntable 5, and the pallet 13 is positioned at an angle of 90 degrees between a carry-in position A and a carry-out position B by turning the turntable 5. As a 90 degree rotation positioning mechanism for the turntable 5, a contact body 14 facing in the same direction as the guide rail 12 is provided protruding from the end of the turntable 5 which is the loading/unloading side of the pallet 13. and unloading position B
Stoppers 15 and 16, on which the abutting body 14 abuts, are fixed to the fixed frame 1 on the side.

Further, on the turntable 5, a stopper 18 which abuts one end of the pallet 13 to be carried in and stops the pallet 13 at a fixed position, and a support roller 17 for supporting the transfer bar 3 are fixedly provided. Further, the restraint link 19 that engages with the other end of the pallet 13 that is positioned in contact with the stopper 18 to restrain the movement of the pallet 13 is in a restraint position shown by a solid line in FIG. It is provided so as to be able to swing up and down.

This restraining link 19 has its tip at the loading/unloading side of the pallet 13, and its rear end is pivotally supported by a pivot pin 21 to a support member 20 fixed on the turntable 5 so as to be able to swing vertically. An engaging part 22 that engages with the other end and an inclined abutting part 23
is formed.

Further, a locking plate 24 is provided on the side of the restraining link 19, and a bolt 2 is pivotably supported upright on a block 25 fixed on the turntable 5.
6 is inserted in a relatively slidable manner, and a coil spring 27 inserted through a bolt 26 constantly pushes the restraint link 19 upwardly, that is, to a restraining position of the pallet 13 via a locking plate 24.

Furthermore, the turntable 5 is attached to the restraint link 19.
When the transfer bar 3 rotates 90 degrees to the unloading position B, the engagement member 2 located directly below the movement path of the transfer bar 3
8 is installed on the side. The engaging member 28 is a rotatable follower roller or other abutting member as shown in the figure.

The operation of the above configuration will be explained. FIG. 1 shows the original position in which the guide rail 12 on the turntable 5 is positioned in the direction in which the pallet 13 is carried in. In this state, when the pallet 13 is carried in from a direction perpendicular to the transfer line by a roller conveyor (not shown), the lower surface of the pallet 13 comes into contact with the contact portion 23 of the restraint link 19, and the restraint link 1
9 is pushed down to the unrestricted position against the spring force of the coil spring 27, guided by the guide rail 12, carried onto the turntable 5, and brought into contact with the stopper 18 and stopped at the carry-in end, that is, at the fixed position. .

When the pallet 13 stops at the fixed position, the tip of the restraining link 19 comes off the bottom surface of the pallet 13, and is automatically pushed up to the restraining position by the spring force of the coil spring 27, and the engaging portion 22
is engaged with the other end of the pallet 13, and the restraint link 19
The movement of the pallet 13 is restrained between the stopper 18 and the stopper 18.

Next, the turning cylinder 8 is operated to turn the turntable 5 90 degrees to the unloading position B as shown in FIG. After this turnover, the transfer bar 3 is operated backward, runs vertically on the turntable 5 and is supported by the support roller 17, and the feed pawl 4 is raised to engage one end of the pallet 13. When the transfer bar 3 moves backward, the engagement member 28 provided on the side of the restraining link 19 engages the transfer bar 3.
, the restraint link 19 swings downward to the non-restraint position, and the engaging portion 22 is pushed down by the pallet 13.
The pallet 13 is released from the other end and released from the pallet 13. Therefore, the pallet 13 placed on the guide rail 12 on the turntable 5 is transferred to the fixed guide rail 2 by the forward movement of the transfer bar 3.
At the same time as the pallet 13 is carried out, the restraining link 19 automatically swings again to the upper restraining position.

In this way, the present invention provides a pallet restraining link on the turntable so that it can swing freely, and when the pallet is carried out, the movement of the transfer bar causes the restraining link to swing, thereby releasing the pallet restraint and making it possible to carry it out. Therefore, a special drive device is not required and the configuration can be simplified.

[Brief explanation of the drawing]

Figure 1 is a plan view of the present invention, Figure 2 is Figure 1-
3 is a line sectional view, FIG. 3 is a view taken in the direction of the arrow in FIG. 1, and FIG. 4 is a plan view in an operating state. 3...transfer bar, 5...turntable, 7...rotating shaft, 8...swivel cylinder, 12
...Guide rail, 13...Pallet, 14...
Contact body, 15, 16...stopper, 18...stopper, 19...restriction link, 22...engaging portion, 2
7...Coil spring, 28...Engagement member.

Claims (1)

[Scope of utility model registration request] In a device in which a pallet is carried in along a guide rail installed on a turntable that can rotate in a horizontal plane, and after turnover is carried out along the guide rail by a transfer bar, one end of the carried pallet is placed on the turntable. A stopper is fixedly installed to stop the pallet in a fixed position by coming into contact with the pallet, and a restraint link that engages with the other end of the pallet to restrain movement of the pallet is pivotally supported to be able to swing between a restraint position and a non-restraint position. This restraint link includes a spring that always presses the restraint link to the restraint position, an engagement member that is pressed by the movement of the transfer bar and swings the restraint link to the non-restraint position, and the restraint link that comes into contact with the pallet when the pallet is carried in. A turning device comprising: a contact portion for swinging the device to a non-restricted position.