Pallet conveyer and pallet transmission method

Abstract

The invention provides a pallet conveyer and a pallet transmission method, wherein the interval between the pallets is variable without changing pallets and a plurality of pallets are transmitted to other machine tools with a different interval therebetween.The pallet conveyer comprises a plurality of pallets (11 -13) for forming an embarkation workpiece and a transmitting mechanism (26). The plurality of pallets are respectively transmitted between the set position and the predetermined target position thereof along the transmission path by the transmitting mechanism (26).The transmission path is formed by a fixed track (16) of the predetermined target position and a movable track (17). The plurality of pallets can move on the movable track from a first position connected with the fixed track to a second position arranged away from the fixed track, wherein the set position of the pallets is arranged.The transmitting mechanism comprises a plurality of circulation belts and a plurality of locking pieces. The circulation belts arranged along the fixed track are respectively connected with the set position and the predetermined target position. The locking pieces respectively arranged on the plurality of pallets are lockable to any one of the plurality of circulation belts.

Description

technical field [0001] The present invention relates to a pallet transfer device and a pallet transfer method for transferring a plurality of pallets on which workpieces are placed. Background technique [0002] An existing manufacturing line has a transfer device that transfers workpieces via a conveyor, and performs predetermined processing on the workpieces by a machine tool at a transfer destination. However, such a conventional conveying device has a disadvantage that, for example, when a heavy workpiece such as a stator is placed on the conveyer and conveyed, since the inertial force acting on the workpiece is large when the workpiece is stopped, the It is difficult to increase the conveying speed, and it is difficult to perform accurate positioning through the baffle. [0003] In order to overcome the above disadvantages, the applicant has proposed a pallet transfer device (for example, refer to Patent Document 1) in which a plurality of pallets on which workpieces a...

AI Technical Summary

Problems solved by technology

[0004] However, since these pallets are clamped and transmitted between the left pallet feeding mechanism and the right pallet feeding mechanism in the above-mentioned pallet transfer device, so among the pallets of the clamped plurality of pallets The spacing between pallets is limited by the total length of these pallets in the conveying direction, therefore, in case one wants to change the spacing between pallets, all these pallets must be replaced by other pallets with a different total length

This lack of flexibility in terms of changing the interval remains an unresolved issue

[0005] In addition, there is also the disadvantage that the installation interval of each machine tool is different depending on the size of the machine tool, and when using a relatively large machine tool, if you want to match the interval between multiple pallets with the relatively large interval between the machine tools, The installation interval between relatively small machine tools becomes larger than necessary, and the installation area is increased in vain.

[0006] Furthermore, there is also the disadvantage that the processing time of each machine tool is also different among each machine tool. Finished pallets stand still, prolonging work time

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