SU255769A1 - GRINDING SECTION - Google Patents

Description

This invention relates to a device for making corrugated paperboard and can be used in the pulp and paper industry.

Constructions of corrugated sections are known that contain a corrugated machine, rolls, heating cylinders, applicators and conveyors.

The aim of the invention is to increase the compactness of the corrugated section.

This is achieved by the fact that the section's corrugating machine is made with at least two clamping grooved shafts.

Fig. 1 shows schematically a corrugated section.

The section consists of a large corrugated shaft /, two corrugated shafts 2, which are pressed against the support rollers 3, and follower 4. With the help of pressure rolls 5, the cardboard is pressed against the corrugated paper. The moving cardboard is heated by the heating rolls 6 before gluing it to the corrugated web. Applying glue to the combs of the corrugation of the paper web is carried out by a glue applicator device 7 located on both sides of the large corrugated shaft. Heater cylinders 8 and 9 for preheating a cardboard sheet that is unwound from the W and // devices. Heated and moistened sheets of paper unwound

from devices 12 and 13, heating humidifiers 14 and 15 are carried out. The fabricated two-layer corrugated cartoons using inclined conveyors 16 and 17 are delivered to horizontal conveyors 18 and 19. The double-layer cardboard is rolled by a winding machine 20. Guides 21 and 22 are designed to support double-layer corrugated cardboard. In order to obtain multi-layer corrugated cartoons, the sheets are heated by cylinders 23, as is a smooth topboard, unwinding from device 24.

The section works as follows.

The paper web unwinding from the device 12 is moistened and heated on the preheater-humidifier 14. Then, the previously prepared web is again moistened with the humidifier 4 and corrugated, the passage meleda with shafts 1 and 2, while the shaft 2 is attached to the shaft 1. With creating a uniform pressure between the shafts, the support roller 3 is supplied to the shaft 2 in the center with a certain pressure. After the formation of a wavy surface, the sheet, previously oiled with glue, held in the grooves of the shaft 1, enters with shafts 1 and 5. Between these shafts, is corrugated glued to a smooth cardboard sheet, coming from the device 10 and heated by devices 8

and 9. The work of the second branch of the section is similar to that described. Next, the double-layer cardboard sheet is fed to the conveyor 18 by means of the conveyor 16 and, pulled through the guide 22, is heated on the cylinder 23. On the underside, the sheet moving by the conveyor 19 can be rolled up on the machine 20 or through the guide 21 is directed to the preheating cylinder 23.

Subject of inventions

A corrugating section containing a corrugating machine, rolls, heating cylinders, glue applicators and conveyors, characterized in that, in order to increase the compactness of the section, the corrugation machine of the section is made with at least two clamping grooved shafts.

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