Cutter shaft structure of transverse cutting machine

Abstract

A cutter shaft structure of a transverse cutting machine is characterized in that the ends of core shafts (70 and 71) are fixedly mounted on a box body (1) through expansion sleeves (8); self-aligning roller bearings are mounted on the core shafts (70 and 71); roller bearing supports (50 and 51) are fixedly mounted on the self-aligning roller bearings and fixedly assembled with rollers (60 and 61); roller rotation driving structures are mounted on the roller bearing supports (50 and 51) and at the ends of the rollers (60 and 61); cutter holders and cutters (100 and 101) are mounted on the outer sides of the rollers (60 and 61); the core shafts (70 and 71) are fixed; the roller rotation driving structures drive the rollers (60 and 61) to rotate around the core shafts. According to the structure, the core shafts are fixed while the rollers are rotated, which reduces inertia of rotation and the weight of cutter shafts so as to achieve an energy saving effect and reduce the bearing interval; the cutter shaft structure has good cutting stability and remarkable energy saving effect when used for cross cutting of wide paper boards (W is greater than or equal to 2,200).

Description

technical field [0001] The invention relates to the technical field of packaging machinery structures, in particular to the design of a cutter shaft transmission structure when cutting wide cardboard horizontally. Background technique [0002] The cross-cutting machine is a kind of equipment used in the corrugated cardboard production line to cut the continuous corrugated cardboard horizontally into the cardboard with the required length and specification. Composition, the transmission part of the cutter shaft is its core part. The cutter shaft requires high running precision, good support rigidity, small deflection, and less cutter shaft jump. If the gap is too large, the paper will not be cut, or the blade will interfere with the knife. For wide cardboard cutting W≥2200, such as image 3 , 4 , the knife shaft structure of the widely used cross-cutting machine drives the input gear shaft 1' through the servo motor, the input gear shaft 1' drives the lower knife gear 2', th...

AI Technical Summary

Problems solved by technology

For wide cardboard cutting W≥2200, such as image 3 , 4 , the knife shaft structure of the widely used cross-cutting machine drives the input gear shaft 1' through the servo motor, the input gear shaft 1' drives the lower knife gear 2', the gap adjustment gear 3' and the upper knife gear 4', the lower knife gear 2 ' is connected with the lower cutter shaft 6' by a key, and the gap adjustment gear 3' and the upper cutter gear 4' are also connected with the upper cutter shaft 5' by a key. The shaft has eccentric quality as a whole, or the cutter shaft precision is not high and the vibration is large, which causes the cutter to wear quickly and the life is short.

Due to the large overall mass of the upper and lower cutter shafts, if most of the dual-drive types on the market are used, and one motor is connected to each end of the lower cutter shaft, the cost will be greatly increased, which cannot meet the actual production needs of the cross-cutting machine.

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