Automatic paper-feeding device for semi-automatic die-cutting machine

Abstract

The invention discloses an automatic paper-feeding device for a semi-automatic die-cutting machine, which comprises a mounting frame fixedly connected to the die-cutting machine, wherein a mounting pipe shaft is horizontally arranged at the lower end of the mounting frame; a vacuum gas pipe communicated with an external vacuum pipeline penetrates into the mounting pipe shaft; a plurality of gas absorbing holes are formed in the pipe wall of the bottom of the vacuum gas pipe at intervals and along an axial direction; a sealing block in contact with the inner wall of the mounting pipe shaft is fixedly connected to the outer wall, at the periphery of the gas absorbing holes, of the vacuum gas pipe; a plurality of paper feeding wheels are fixedly arranged on the mounting pipe shaft at intervals; a plurality of vacuum suction disks are uniformly arranged on the outer circumferential surface of each paper feeding wheel along the circumferential direction at intervals; the other ends of suction disk gas ways arranged on a suction nozzle of the vacuum suction disc and vent holes formed in the pipe wall of the mounting pipe shaft are hermetically connected in one-to-one correspondence; and the gas absorbing holes formed in the pipe wall of the bottom of the vacuum gas pipe are in one-to-one correspondence with the vent holes rotated to be below the mounting pipe shaft. The automatic paper-feeding device for the semi-automatic die-cutting machine has a simple structure and ingenious paper feeding force kinetic potential, effectively solves the defect that the semi-automatic die-cutting machine has low efficacy, and greatly increases the qualification rate of products.

Description

technical field [0001] The invention relates to a semi-automatic die-cutting machine used in the offset printing corrugated packaging industry, in particular to an automatic paper feeding device for the semi-automatic die-cutting machine. Background technique [0002] In the offset printing and corrugated packaging industry, when there is a problem that the automatic die-cutting machine cannot feed and move the paper smoothly due to the warping of the corrugated cardboard, a semi-automatic die-cutting machine is generally used to die-cut the warped corrugated cardboard. This is because the semi-automatic die-cutting machine relies on manual paper feeding and is not limited by warped cardboard, so the semi-automatic die-cutting machine is a more commonly used equipment in the offset printing corrugated packaging industry. But it is also because the semi-automatic die-cutting machine needs manual paper feeding, so each shift must be equipped with 1-2 paper feeder operators to ...

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Problems solved by technology

But it is also because the semi-automatic die-cutting machine needs manual paper feeding, so each shift must be equipped with 1-2 paper feeder operators to complete the production tasks on the shift. This is because the saturated working frequency of the semi-automatic die-cutting machine is high, up to More than 3500 sheets / hour. During normal work, if the paper feeding frequency reaches 2500 sheets / hour, the hand of the paper feeder will be very busy. Usually, people will be very tired when a board of paper comes down, so it is limited by the frequency of manual paper feeding. As a result, the production efficiency of the die-cutting machine can only reach below 70%. At the same time, during the manual paper feeding process, due to the inconsistent feeding force, the front pressure of the cardboard cannot be always balanced, which can easily cause damage to the front paper of the cardboard and cause Quality accidents occur, and for products with high requirements for die-cutting precision, the pass rate becomes lower. The above-mentioned reasons have caused a substantial increase in the production cost of semi-automatic die-cutting machines

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