Necking inner diameter measurement device and necking inner diameter measurement method of two-piece can

Abstract

The invention aims to provide a necking inner diameter measurement device of a two-piece can. The necking inner diameter measurement device comprises a linear guide rail, two semicircular blocks whichare slidably mounted on the linear guide rail, a movable air cylinder used for driving the semicircular blocks to do linear motion along the linear guide rail, and a necking inner diameter measurement probe used for measuring the necking inner diameter; the necking inner diameter measurement probe and the symmetry axis of the two semicircular blocks are located on the same straight line; when thesemicircular blocks stretch and tension the can body, the necking inner diameter measurement probe can extend out of the semicircular blocks until being in contact with the semicircular blocks; and adata processing module can calculate the moving distance between the two semicircular blocks according to the displacement of the necking inner diameter measurement probe. The invention also providesa necking inner diameter measurement method; and by means of the device and the method, the perimeter of the can body can be accurately calculated, and then the necking inner diameter can be obtainedby combination of a diameter formula of a circle, so that the problem that the measurement data of the necking inner diameter is inaccurate due to easily occurred deformation caused by insufficient rigidity of the can body is solved.

Description

technical field [0001] The invention belongs to the field of detection devices for two-piece cans, and in particular relates to a necking inner diameter measuring device for two-piece cans. Background technique [0002] A two-piece can refers to a metal container consisting of a lid and an integral seamless body with a bottom. The can body of this type of metal container is formed into a set shape by deep drawing. The forming method of this cup-shaped container is a stamping process, so the two-piece can is also often called a stamped can. The side wall and bottom of the two-piece can body are an integral structure without any joints, which makes it have the advantages of high hygiene quality of the food inside, safety of the contents, light weight, material saving and simple molding process. [0003] Since two-piece cans are mostly used in the food and beverage industry, the control of the production and testing process is relatively strict. The mouth is relatively soft....

AI Technical Summary

Problems solved by technology

Through the setting of the above device, the circumference of the tank can be accurately calculated and the formula of the diameter of the circle can be used to obtain the inner diameter of the necking, avoiding the problem of inaccurate measurement data of the inner diameter of the necking caused by the lack of rigidity of the tank and easy deformation.

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