JPS58184614A - Carrier using running truck - Google Patents

Abstract

PURPOSE:To allow a small-scale means to secure the relative positoning of a carried article and a working machine with high precision, by providing a floating means between a running truck and the carried article mounted thereupon. CONSTITUTION:After the running truck 1 is stopped, a cylinder mechanism 23 for driving a positioning means 21 is put in operation to move a positioning member 25 to the right, and a positioning surface 26 is engaged with the engaging groove 28 of an engaging member 27 provided to a floating table 6 to bring the left side surface of the floating table 6 into press contact with the reference surface 32 of a reference member 29. The floating table 6 while moving to the left moves forth or back according to an error of the stopping position of the running car 1 because the positioning surface 26 and engaging groove 28 from a plane isosceles triangle to be positioned relatively to a pallet changing device and the table 10 of the working machine with high precision.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a conveyance device using a traveling carriage.

When transporting workpieces to a processing machine etc., the workpieces or a conveyance article such as a pallet on which they are placed,
It is carried out by being mounted on a trackless traveling trolley. but.

Generally, when the traveling carriage is stopped, the positioning accuracy varies by a large amount υ, so it has been impossible to directly transfer the transported article on the traveling carriage to a processing machine or the like. So, conventionally.

Correct positioning is performed by forcibly shifting the traveling trolley using an external means, but in order to shift and correct positioning a traveling trolley with a large mass, is it necessary to use an external means for correction? There was a problem in that the size of the position was increased, and the positioning accuracy after the correction was also poor, and even after the correction, a sufficient positioning degree could not be obtained for transferring the conveyed article.

The present invention aims to solve the above-mentioned problem, and includes providing a floating means between a traveling carriage and an article to be transported mounted thereon, and moving the positioning means to the floating position while the traveling carriage is stopped. It is an object of the present invention to provide a conveying device #t that can ensure the relative positioning of a conveyed article and a processing machine with high precision by engaging the means with a small-scale means.

Hereinafter, an embodiment of the present invention will be explained with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a running trolley, and this running trolley 1 is equipped with an electric motor (both not shown) that uses a valve as a power source. Alternatively, it is a trackless type that is guided along a buried signal line (not shown) and runs unmanned.

A floating means 3 is provided on the traveling carriage 1. In the floating means 3, a swinging table 70 is supported on a support base 4 fixed on the traveling carriage 1 via roller bearings 5 so as to be movable in each direction on a horizontal plane.
The inner surface of the side wall is supported by a total of eight coil springs 7, two on each side, on the outer periphery of the support stand 4, and on the floating cheeple 6 is a pallet 9a supported by a guide rail 8 fixed thereto. It is supported so as to be horizontally movable in the left-right direction orthogonal to the front-rear direction of the traveling trolley 1, and is configured so that a conveyed article (not shown) is mounted on the pallet 9a.

In addition, 10 is a table of the processing machine, and this table 1
0 on the left to the guide rail 31 fixed on top.

:.

A pallet (9b) is supported so as to be horizontally movable in the right direction. A pallet exchange device flll is disposed between the table lO of the processing machine and the stop position of the traveling carriage 1. This pallet exchange device 11 has a movable table 15 supported on a base 12 that is raised and lowered by a lifting cylinder mechanism 13 and horizontally rotated by a rotation mechanism 14. A pair of operating cylinder mechanisms 16 are provided with a guide rail 17 that supports the pallet in a horizontally movable manner, and the operating cylinder mechanism]6.
a.

Pistons 18m and 16b have engagement claws 20a at their distal ends that removably engage with engagement grooves 19 of the pallet.

20b are each fixed. Note that this pallet exchange device all is conventionally known. Said running trolley 1
Positioning means 21 are provided on both sides of the stop position. . This positioning means 21 is connected to a reference member 4 and a driving cylinder mechanism (!:
A positioning member 5 is identified at the tip of the piston of this cylinder mechanism B. A positioning surface having an isosceles triangular shape is formed at the tip of the positioning member δ, and this positioning surface extends over the engagement member n fixed at the center of the left outer surface of the floating cheeple 6 in the front-rear direction.
is arranged to be removably engaged with the engagement groove array having an isosceles triangular plane.

Further, the reference member 4 is arranged between the stop position of the traveling trolley 1 and the pallet exchange device 11, and the reference member 4 is fixed between the legs fixed on the floor surface 2. Reference surfaces 32 are provided at two locations in a protruding manner to come into contact with the right outer surface of the 70-ching table 6. Note that O and O in the figure represent the driving wheels and driven wheels of the traveling bogie 1.

Next, the operation of the conveyance device of the embodiment configured as above will be explained. First, Figure 1.

As shown in FIG. 2, the traveling cart 1 is run unmanned and stopped between the pallet exchange device 11 and the positioning means 21 using an appropriate method similar to the conventional conveying device of this type. In this case, there are considerable errors and variations in the stopping position of the traveling carriage 1. Therefore, the driving cylinder mechanism O of the positioning means 21 is actuated to move the positioning member 5 forward to the right and engage it with the engagement groove row of the engagement member n provided on the positioning surface rough 0-ching table 6. , the left side surface of the floating beam 6 is pressed against the reference surface 32 of the reference member 4. In this way, while the traveling cart 1 remains stationary, the floating cheeple 6 moves to the left while the positioning surface portion and the engagement groove form a corresponding isosceles triangular plane. It moves forward or backward depending on the error in the stop position of the trolley 1, and is positioned and fixed with high precision with respect to the pallet exchange device 11 and the table 10 of the processing machine. Next, at the position where the movable table 15 of the pallet exchanger #t11 is lowered, the operating cylinder mechanisms 1fia and 16b are operated in the direction in which the pistons 18a and 18b extend, and the engaging claw 20 m
, 20b is advanced to the point directly below the floating cheeple 6, the pallet 9m of the processing machine table 1(), and the engagement groove 19 of 9b, and then the lifting cylinder mechanism 13 is operated to raise the movable table 15. Therefore, the engagement claw is 20m.

20b is engaged with the engagement grooves 19 of pallets 9m and 9b, respectively. Next, the operation cylinder mechanism 16a.

By operating the pistons 18m, 18b+M in the small direction and retracting the engaging claws 20m, 20b, the floating teeth are activated.
Guide rail of table 10 of pull 6° processing machine 8.31
Pull it out from the guide rail 17 of the pallet exchange device 11.
In this state, the rotation mechanism 14 is operated to rotate the movable table 15 by 180 degrees, and the operation cylinder mechanism 1 is
Engagement claws 20 m and 20 b are activated by the operation of 6 m and 16 b.
f Pallet 9m' advanced and loaded with unprocessed conveyed goods
(A barn with the currently processed article placed on the guide rail 31 of the table 10 of the processing machine) 9b't is supported by the guide rail 8 of the floating chiple 6, respectively. Thereafter, the movable table 15 of the pallet exchange device 111 is lowered and returned to its original position, and the engaging claw 20m is removed.

31 b f Pallet 9m, removed from engagement groove 19 of 9b, operating cylinder mechanism 15m, piston 18a of ] 6b.

The engagement claws 20a and 20b are returned to the backward position by the contraction operation of 18b. At the same time, the driving cylinder mechanism 23 is operated to cause the positioning member 25 to return to the left side.

The engagement with the engagement member n is removed, the floating beam 6 is moved away from the reference surface 32 by the restoring force of the spring 7, and then the traveling carriage 1' is caused to travel to the next process or the like. Further, the conveyed article of the baren 9b carried onto the table 10 of the processing machine is subjected to appropriate processing by the processing machine.

Note that in the above embodiment, the conveyed articles were transferred between the traveling carriage and the processing machine via the pallet exchange device, but in this invention, the conveyed articles were transferred between the traveling carriage and the processing machine, etc., without using the pallet exchange device. The conveyed goods may be directly delivered and received by the spring, or the spring (f) may be omitted.Furthermore, various types of traveling carts, such as those of a wireless guidance type, may be used, and the floating means may be hydraulic instead of springs. Alternatively, the positioning means may be a cam or the like having an appropriate configuration.

As explained above, the conveying device using the traveling carriage according to the present invention provides a floating means between the traveling carriage and the conveyed article loaded thereon, and when the traveling carriage is stopped, the one positioning means is set as above. By engaging the floating means and moving the floating means, it is possible to correct the positioning by absorbing the difference in the stopping position of the conveyed article due to the difference in the stopping position of the traveling cart. Since the positioning is performed by the floating means, the positioning means can also be small, and there is an effect that highly accurate corrective positioning can be performed.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention, and FIG. 2 is a partially cutaway plan view of the same. 1... Traveling trolley, 2... Floor surface, 3... Floating means,
5... Rolling bearing, 6... Floating cheeple, 7... Spring, 9m, 9b... Pallet, lO...
・Processing machine table, 11... Pallet changing device, 1
5...Movable table, 21...Positioning means, B-
... Drive cylinder mechanism, 5... Positioning member, n.
... Retaining member, 29... Reference member.

Claims (1)

[Claims] A floating means is provided between a traveling trolley and a conveyed article mounted thereon, and a means for positioning the floating means within a required accuracy while the traveling trolley is stopped is provided so as to be able to be connected to the floating means. A transport device that uses a distinctive traveling trolley.