Corrugated board manufacturing (3)

9, cutting device

The bonded single-sided corrugated cardboard shall be slit according to certain specifications according to the processing requirements. It is mainly composed of longitudinal slitter consisting of slitter blades and crosscutting of upper and lower long blades. It is actually a single rotary cutter.

The paper roll holders in the automatic corrugated paperboard production line are mainly composed of rotary and hydraulic type (Fig. 12 and Fig. 13). The latter is more advanced, and does not need to set up the ground in the ground, the paper clamping part is controlled by the electric, converts the placing motion into a linear direction movement, the power comes from the gear motor fixed on the paper arm, according to the setting of the line strength, The output shaft end of the motor is equipped with a torque limiting device. Its base paper lifting part is driven by two sets of hydraulic systems and is safe and reliable. The rotary shaftless bracket is electrically controlled. A part of the control arm is forward or reversed. Part of the control clamps and releases the base paper, and the manual brake device controls the tension of the web. Use a rotary shaftless support ground to dig enough of its grip arm to have a room for rotation to meet its operational needs.

In either case, the paper frame serves not only to load and release the web, but also to act as a brake. Due to the proper brake control, the proper tension of the web during operation is maintained, so that the produced corrugated cardboard face paper and core paper are not wrinkled, and the corrugation is smooth, and no collapse, breakage or flaws occur.

The function of the base paper holder in the automatic production line of cardboard is mainly to hold, release, properly clamp web, correct, brake and flip.

In the automatic production line of corrugated board, the setting of the preheater is very important. Before the combination of the surface paper, corrugated paper, and single-faced corrugated board into the glueing device, the preheating should be performed separately to make it adhere well and maintain proper and uniform Water. In order to ensure a good working condition, the preheater maintains the amplitude tension of the reel paper and single-faced corrugated cardboard to achieve good results. The preheater can be arbitrarily adjusted and rotated. The preheating angle of the paper web is not less than 90°C (see Figure 14). .

In order to ensure the preheating of single-layer corrugated cardboard with different layer structures, there are also triple and five-level preheaters.

In order to make the single-sided corrugated board to be conveyed evenly and orderly, a paper flyover should be set up. Let single-faced corrugated board run under control in accordance with the specified track before assembly. The paper bridge is mainly composed of a correction section, a transmission section, tension adjustment and control devices. It allows the orderly accumulation of single-sided corrugated paperboards, allowing the moisture of a single-faced corrugated board to properly evaporate, cure and enhance the adhesive strength of the adhesive. At the same time, when a single-sided machine is stopped for any reason, proper stacking will not affect the production operation of subsequent processes.