CN2393696Y

CN2393696Y - Screw cutting tool

Info

Publication number: CN2393696Y
Application number: CN 99246099
Authority: CN
Inventors: 范德金; 徐全军; 杨皓; 田波; 朱卫国; 曾军明
Original assignee: Hubei Jingshan Light Industrial Machinery Co Ltd
Current assignee: Hubei Jingshan Light Industrial Machinery Co Ltd
Priority date: 1999-09-28
Filing date: 1999-09-28
Publication date: 2000-08-30
Anticipated expiration: 2009-09-28

Abstract

The utility model relates to a screw cutting tool, which is composed of a pair of cutter rollers which are arranged on a machine frame of a paperboard cutter and are rotated synchronously, an upper and a lower cutter blades, a knife clip, cutter blade fastening screws, etc. Tips of a cutter are formed with spiral lines on the surface of a column which uses the centerlines of the cutter rollers as the center. The screw directions of the upper and the lower tips are opposite, and the pitch angles of the upper and the lower tips are equal. When a paperboard is cut, the speed of each point of the tips is consistent with the speed of the paperboard. The utility model has the advantages that the quality of cutting is improved, the force for cutting the paperboard is lowered, the effect is obvious, the energy is consumed, and the service life of the cutter blades is extended.

Description

A kind of spiral cutter

The utility model relates to a kind of spiral cutter of corrugated board cutting machine.

Corrugated board is a kind of packaging material of being fitted and being formed by the core paper and the sheet paper of ripple corrugated, is used to make packing carton, case and backing plate.Present available corrugated paper board production line is made in a large number, and the corrugated board cutting machine is the main machinery in the corrugated paper board production line.Fig. 1, Fig. 2, Fig. 3, shown in Figure 4.A kind of cutter schematic diagram of traditional corrugated board cutting machine shows that this cutter is made up of a pair of rotor C1, tool rest C2, the blade C3 of rotation relatively synchronously; As shown in Figure 2,, make an end height for reducing the strength that blade C3 cuts off cardboard A, the form that an end is low, two blade C3 formation scissors shape is sheared cardboard A about making; Blade C3 is installed on the rotor C1 by tool rest C2; Point of a knife enters in rotor C1 direction of rotation, and along with the relative rotation of rotor C1 up and down, the point of a knife of upper and lower blade C3 is in high-end at first contact, and contact point progressively arrives low side, and cardboard A is cut off.

There is the problem of following several aspects in the spiral cutter of said structure:

1. blade is made an end height, form that an end is low, and the each point of point of a knife from high-end to low side is not in the same turning circle cylinder, and point of a knife each point linear speed can not guarantee consistent with cardboard speed under the same rotating speed.Influence cardboard fracture quality.

2. when the point of contact moved to the blade low side, blade is high-end bigger coincidence amount.Last bottom knife collision can occur when breaking away from.Therefore can not do blade two ends difference in height very big, general only about 10mm, the shearing difference of last bottom knife formation be very little.Also just can not effectively reduce shearing force, also be unfavorable for prolonging blade service life.

3. blade two ends height is inconsistent, and shape is owed rule, has increased the manufacture difficulty of blade, the manufacturing cost height.

Task to be solved in the utility model is to design a kind of cutter for the corrugated board cutting machine, be different from traditional cutter, cutting knife point of a knife each point is on the same turning circle cylinder, simultaneously for reducing the strength of cutting off cardboard effectively, when making up and down the knife cut cardboard, an end of blade elder generation cut paper plate and an end of back cut paper plate will have a bigger difference.

The purpose of this utility model is achieved in that a kind of spiral cutter of corrugated board cutting machine, by a pair of rotor of rotation relatively synchronously on cardboard cutting machine frame, last bottom knife, compositions such as hold(ing)-down clip, blade trip bolt, two tool roller axis line parallels, there is the face of observing orthogonal spiral distribution from the normal section on the rotor surface, and the rotation direction on upper and lower rotor is opposite, and upper and lower blade forms a pair of spiral cutting knife along this two sides location and installation.

Form helix at the cutting knife point of a knife on the face of cylinder that with the rotor center line is the center, and upper and lower point of a knife rotation direction is opposite, helical angle equates.

By said structure, the utlity model has following characteristics:

1. because rotor helicla flute bottom surface is consistent to the distance at its center, and the width unanimity of blade, so the point of a knife each point is consistent to the distance at rotor center, guaranteed that the point of a knife each point is on a corresponding helix on the cylinder of the concentric garden of rotor, during the rotor rotation, point of a knife each point linear speed is identical, can guarantee that the point of a knife each point is consistent with cardboard speed when shearing cardboard, improves shearing quality.

2. because point of a knife forms a helix, and the blade two ends can not be sheared cardboard simultaneously, must have successively, promptly so-called shearing is poor.The shearing difference of tradition cutter is by the decision of the difference of height at blade two ends.Generally has only 10～20mm; Shearing difference of the present utility model is determined by the point of a knife helical angle under the long certain situation of rotor, general this angle is 1.5～3 °, with 1.8 meters rimmer knife rollers, 2 ° of helical angles are example, calculating and shearing difference is 63mm (1800 * tg2 °), and this value is more much bigger than the shearing difference of traditional cutter, thereby can reduce the strength of shearing cardboard greatly, the energy consumption that takes effect prolongs blade service life.

3. the blade of traditional cutter is that an end is wide, and an end is narrow, and point of a knife and bottom surface form certain inclination angle.The utility model blade is a regular rectangle, and point of a knife is parallel with the bottom surface, has promptly simplified manufacturing process, has made things convenient for user's reconditioning again, has also reduced cost.

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail.

Fig. 1 is traditional corrugated board cutting machine cutter schematic diagram;

Fig. 2 is the A-A cutaway view of Fig. 1:

Fig. 3 is the blade schematic diagram of traditional corrugated board cutting machine cutter;

Fig. 4 is the side view of Fig. 3:

Fig. 5 is a schematic diagram of the present utility model;

Fig. 6 is the B-B cutaway view of Fig. 5:

Fig. 7 is a blade schematic diagram of the present utility model;

Fig. 8 is the side view of Fig. 7:

Address before Fig. 1,2,3,4, no longer repeat.

Shown in Fig. 5,6,7,8, the cutter of corrugated board cutting machine of the present utility model.On the frame of last rotor 1, following rotor 2 parallel installations and corrugated board cutting machine, upper and lower blade 3 is fastened on upper and

lower rotor

1 and 2 through pressing plate 5 by trip bolt 4 respectively.Corrugated board A along the rotor direction of rotation from two rotors in the middle of input, along with rotor up and down rotate relatively synchronously, last bottom knife 3 right-hand member points of a knife at first contact and begin to shear cardboard A, and progressively shearing left, until cardboard A is cut off.Adjust screw 6 and be loaded on down rotor 2, be used for guaranteeing that upper and lower point of a knife can both contact effectively in any position.

The embodiment that the utility model is not limited to describe, the utility model relate to by it and relate to following situation: upper and lower blade point of a knife is in separately in self the turning circle cylinder and at this periphery and forms helix; The helix helical angle that upper and lower blade point of a knife forms respectively equates that the hand of spiral is opposite.

Claims

1. screw type cutter, by a pair of rotor of rotation relatively synchronously, last bottom knife, compositions such as hold(ing)-down clip, blade trip bolt, it is characterized in that: two tool roller axis line parallels, there is the face of observing orthogonal spiral distribution from the normal section on the rotor surface, and the rotation direction on upper and lower rotor is opposite, and upper and lower blade forms a pair of spiral cutting knife along this two sides location and installation.

2. screw type cutter according to claim 1 is characterized in that: the cutting knife point of a knife forms helix on the face of cylinder that with the rotor center line is the center, and upper and lower point of a knife rotation direction is opposite, and helical angle equates.