JPS6121449Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a roller flight conveyor chain in which a load supporting roller is pivotally supported on the side of the roller chain. In such conveyor chains, load supporting rollers tend to be made of synthetic resin in order to prevent noise and improve aesthetics. When conveying resin pallets using a roller flight conveyor chain equipped with load-supporting rollers made of synthetic resin, friction between the load-supporting rollers and the pallet (when the pallet is stopped, etc.) As a result, static electricity is generated,
This will have a negative impact on the workpieces on the pallet (e.g.
IC will be destroyed).

The present invention aims to solve these problems, and one embodiment thereof will be described below with reference to the attached illustrative drawings.

1 is a pair of left and right inner chain links; 2 is a pair of left and right outer chain links; 3 and 4 are shafts connecting both chain links 1 and 2; is rotatably supported. The shafts 4 arranged every other shaft are elongated and equipped with roller support parts 4a that protrude from the outer chain link 2 to both left and right sides, and each of the shafts 4 is provided with a load supporting roller made of synthetic resin. 7 is rotatably supported. 8 is a split pin for preventing the roller from coming off.
The roller flight conveyor chain 9 described above runs within a groove-shaped guide 10 while being guided by guide rails 11 that support chain rollers 6, and moves pallets 12 supported by load-supporting rollers 7 in the chain running direction. transport.

In the roller flight conveyor chain 9 as described above, according to the present invention, the load supporting roller 7 is molded from a synthetic resin mixed with a conductive substance such as carbon, and is imparted with electrical conductivity. The other links 1, 2, shafts 3, 4, and chain roller 6 are made of iron.

In the roller flight conveyor configured as described above, when the pallet 12 is made of synthetic resin, the pallet 12 being conveyed is stopped by a stopper and the load supporting rollers 7 of the conveyor chain 9 are rolled. When the pallet 12 is passed under the pallet 12, static electricity generated between the load supporting roller 7 and the pallet 12 is removed by the load supporting roller 7.
As in the case where the pallet is made of iron, it is released from the roller 7 to the guide rail 11 via the shaft 4, the bush 5 and the chain roller 6, thereby eliminating the possibility that the electric appliances on the pallet 12 will be charged.

The roller flight conveyor chain of the present invention can be implemented as described above, and its feature is that load supporting rollers having a larger diameter than the chain rollers rolling on the guide rails are provided on both sides of the roller chain. In a roller flight conveyor chain that is pivotally supported via a common pivot shaft with the chain roller, the chain roller and roller pivot shaft are made of metal, and only the load supporting roller is made of metal, and only the load supporting roller is made of metal. It is made of a synthetic resin with electrical conductivity, and the static electricity generated by friction between the load supporting roller and the load can be released from the roller pivot shaft to the guide rail via the chain roller. be.

According to the conveyor chain of the present invention,
Even if the pallet used is made of synthetic resin, the static electricity generated when the pallet and the load supporting roller on the conveyor chain side move relative to each other can be effectively transferred to the guide rail through the roller pivot shaft and chain roller. This eliminates the need to charge electrical appliances on the pallet. Moreover, the load supporting rollers are made of synthetic resin rather than metal, so
The noise generated during relative movement with the pallet is very small, and the environment can be kept in a good condition.

Furthermore, according to the configuration of the present invention, the roller pivot shaft and chain roller are made of metal so that there is no risk of sliding movement relative to the pallet, so compared to a case where these are also made of a special synthetic resin that has conductivity. In addition to minimizing cost increases, it can also be effectively used as a conveyor chain that can withstand large loads in terms of strength.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a partially cross-sectional plan view, FIG. 2 is a side view, and FIG. 3 is a vertical cross-sectional front view. 1, 2... Chain link, 3, 4... Roller pivot shaft, 6... Chain roller, 7... Load support roller, 11... Guide rail, 12... Pallet.

Claims (1)

[Scope of utility model registration request] In the roller flight conveyor chain, load supporting rollers having a larger diameter than the chain rollers rolling on guide rails are pivotally supported on both sides of the roller chain via a common pivot shaft with the chain rollers. and the roller pivot shaft are made of metal, and only the load-supporting roller is made of a synthetic resin containing a conductive substance such as carbon to make it electrically conductive. A roller flight conveyor chain in which static electricity generated by friction can be released to the guide rail via the roller pivot shaft and the chain roller.