Punching device for paperboard

Abstract

The invention discloses a punching device for a paperboard, and relates to the technical field of mechanical punching. The punching device for the paperboard comprises a base, wherein a positioning shaft is fixed to the top of the base, a limiting sleeve is connected to the top of the positioning shaft in a sleeving mode, the bottom of the limiting sleeve and the top of the base are fixed to the two ends of a supporting spring respectively, and a puncher is fixed with the left side of the outer wall of the limiting sleeve. According to the punching device for the paperboard, in the process that a punching sleeve continues to descend after punching is completed, the punching sleeve and a driving sleeve can move relative to each other, the driving sleeve enables an anti-adhesion strip to move in the punching sleeve through a pushing strip, a rotating strip and a connecting strip, so that round paperboard waste in the punching sleeve is pushed out of the punching sleeve and is discharged out of the device through a leakage channel and a discharge channel, the round paperboard waste is prevented from being accumulated in the punching sleeve, the situations that the punching efficiency is reduced and the punching effect becomes poor due to cleaning of the round paperboard waste are avoided, and the punching efficiency and effect of the punching device on the paperboard are improved.

Description

technical field [0001] The invention relates to the technical field of mechanical punching, in particular to a punching device for cardboard. Background technique [0002] Cardboard is also called cardboard. A thick paper sheet made of various pulps with interwoven fibers. The difference between cardboard and paper is usually distinguished by weight and thickness. Generally, those with a weight of more than 250g / m2 and a thickness greater than 0.5mm are called cardboard (otherwise: paper with a thickness greater than 0.1mm is generally called cardboard. Generally, the weight is less than 250g / m2 m2 is considered paper, and those with a basis weight of 250g / m2 or above are considered cardboard). [0003] When processing some hard solid cardboard products, it may be necessary to use a punching device to punch the cardboard. The existing cardboard punching device usually uses a punching sleeve with a sharp bottom and a punching base to punch holes. However, during the drilli...

AI Technical Summary

Problems solved by technology

[0003] When processing some hard solid cardboard products, it may be necessary to use a punching device to punch the cardboard. The existing cardboard punching device usually uses a punching sleeve with a sharp bottom and a punching base to punch holes. However, during the drilling process, part of the circular cardboard waste that is detached from the cardboard under the action of the drilling sleeve will stay inside the punching sleeve under the action of friction and needs to be taken out manually, which not only consumes time, but also reduces the drilling efficiency. There is a possibility that the bushing will not perform well due to excessive circular cardboard waste clogging inside the bushing

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