Abstract: A wafer loading system positioning method and device, comprising a loading system, having a base and a rear plate for docking on a positioning frame of a production equipment. The main characteristic thereof is that the loading system in an upper part of the rear plate has a holding seat and the positioning frame in an upper part of a front side has an upward extending positioning element. Two eccentric cams on the holding seat and the positioning element allow to adjust a relative position of the holding seat with respect to the positioning element. A lifting mechanism enables raising of the loading system for lifting said holding seat above said positioning element, so as to enable said holding seat to engage with said positioning element.

Abstract: A conveyer transfer apparatus for use in a roller conveyer for lifting an article upwardly and moving it laterally to another conveyer. It includes a motor as a driving force to drive two pairs of spaced eccentric sprockets and a side-roller-chain, which engages with a pair of spaced sprockets. The side-roller-chain moves on a guide channel, which can be lifted upward, synchronously with the movement of the sprocket, thus enabling the article to be lifted upward and carried away laterally at a speed faster than the rotating speed of the sprocket.

Abstract: A chain type transfer device, particularly suitable for use with roller conveyors for shifting operation, comprises a motor, two supporting plates, a plurality of rotating shafts, a plurality of driving sprockets, a plurality of guiding plates and a plurality of composite chains; wherein each rotating shaft is pivoted between the two supporting plates and the driving sprockets are secured to the two ends of each of the rotating shafts to be associated with the respective guiding plate for the extension of the respective endless composite chain. The composite chain is formed by combining a regular chain with a roller chain which has a plurality of free rollers pivoted to an outer side thereof.

Abstract: A roller conveyor composed of a main body, several rollers, a roller's fixed block and a transmission device and is shaped as a rectangle or a circular arc. The two sides of the main body are preferably composed of an aluminum extrusion frame. The roller is fixed on the aluminum extrusion frame at the two sides of the main body by coupling with a pair of roller's fixed blocks, one being connected to a concave trough positioned on each side of the main body. The inner part of the roller includes a bearing stand of cup shape, a central shaft, an end cover, and a bearing of industrial use. On the outer surface, there is a concave trough for connection with a PU belt and a transmission device to turn and power the rollers. Also, another embodiment of the invention employs a leaning cone roller-type conveyor to make the roller comply with the circular arc shape and enable the conveyor to make a turn.

Abstract: An improved roller conveyer for conveying objects is disclosed. It comprises: (a) a fixed conveyer section having first parallel frames supported on upright stands and a plurality of first parallel rollers mounted between the first parallel frames of the fixed conveyer section; (b) a power drive for rotating the first parallel rollers of the fixed conveyer section when conveying objects; (c) a liftable conveyer section having second parallel frames and a plurality of second parallel rollers mounted between the second parallel frames of the liftable conveyer section.

Abstract: A multiple weighing apparatus with dual acting hopper gates mechanism comprises a feeding device conveying articles to be weighed and packed to a weighing section of the apparatus. The articles which are transferred into the weighing section are weighed and a portion of which having a desired weight is then allowed to move into a packing section to be packed therein. Each pack of the articles will have a desired weight. The weighing section comprises a plurality of pool hoppers and weighing hoppers controlled by a central controller. Each of the hoppers comprises a body having therein a space for receiving the articles and a discharge port closable by two gates. A Stephenson III type six-bar mechanism is adapted to operate the gates with the gates being the output links thereof. A pushing rod which is controlled by the central controller is used to move the input link of the six-bar mechanism to open the gates.