Patent ID: 9573755
Date: 2017-02-21
CPC Classifications: B65D,G01G,Y10T

Claim:
1. A mechanism for opening and closing a hopper gate which is used in a combination weigher which performs combination calculation based on weights of objects, to find a combination in which a total of the weights of the objects falls within an allowable range with respect to a target weight, the mechanism for opening and closing the hopper gate comprising: an actuator for generating a driving force for opening and closing the hopper gate; and a cam mechanism for opening and closing the hopper gate based on the driving force applied by the actuator; wherein the cam mechanism inhibits the hopper gate from being opened in a position at which the hopper gate is closed; wherein the cam mechanism includes a driven section and a driving section, and wherein the driven section of the cam mechanism is a cam follower and the driving section of the cam mechanism is a cam holder; and wherein the cam follower is configured to contact a curved surface of the cam holder, and the cam follower and the curved surface of the cam holder are configured to inhibit the hopper gate from being opened when the cam follower contacts the curved surface of the cam holder.