JP3046971U - Double blade slitter mechanism - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a double blade slitter mechanism. SOLUTION: In a device for cutting a roll of paper with a slitter, in order to prevent a waving phenomenon from being generated at one cut end of a cut product, a cutting edge portion of two single blades is provided outside. A double-blade slitter mechanism characterized by a double blade that is tied together.

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slitter mechanism for separating sheets of forms as semi-finished products and products.

[0002]

2. Description of the Related Art A conventional slitter mechanism (A) is shown in FIGS. 1 (a) and 1 (b) and FIGS. 2 (a) and 2 (b). Three sets of slitters, consisting of an upper blade (3) mounted on the mounting shaft (1) and a lower blade (4) mounted on the rotating shaft (2), facing continuous paper (P) such as forms. Each of the upper blades (3) of (a1), (a2) and (a3) is constituted by a single blade (single blade). The two sets of slitters (a1) and (a3) on the left and right are for edge cutting, and one set of slitters (a2) in the center is for double cutting that cuts both products (6) and (6 '). . As shown in the enlarged view of FIG. 2 (b), the upper blade (3) includes an inclined portion (12) [polishing angle] and a cutting edge (13). With such a shape of the upper blade (3), unnecessary cutting of the end papers (e1) and (e2) at both ends of the paper (P) may be cut off as scrap paper. 6), that is, the cutting edge (13) side becomes orderly, but the hatched portion (8) shown in FIG. 1A, which is the cutting edge of the other product (6 '), that is, the upper blade (3) In the portion corresponding to the inclined portion (12), there was a problem that the wave phenomenon (9) shown in FIG.

[0003]

[Problem to be Solved by the Invention] When the paper (P) is cut by the slitter mechanism, as shown in FIG. 3, it is necessary that the paper (P) is stretched with a strong tension (T). The paper (P) hitting the rear inclined portion (12) is cut along the inclined portion (12) of the upper blade (3) [consisting of an arbitrary polishing angle], so that an irregular wave is formed at the cut edge. The phenomenon (9) occurs. This waviness phenomenon does not conflict with maintaining the accuracy specified in the JIS standard for mechanical assembly of bearings and other components attached to the slitter mechanism, but it does not conflict, but it has a synergistic effect with small shaft runout caused by it. (Due to the shallow action of the engagement of the upper and lower blades), which appears more pronounced. The purpose of this invention is to solve such a wave phenomenon.

[0004]

[Means for Solving the Problems] In an apparatus for cutting a roll of paper with a slitter, two single blades are used to prevent a waving phenomenon from occurring at one cut end of the cut product. The double edge slitter mechanism is characterized in that the edge is directed outward and is tied to form a double edge.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 4, a slitter mechanism (A ') according to the present invention is used for cutting products (6) and (6') shown in FIG. In order to keep the cut edges in orderly condition under the same conditions, each of the two upper blades (3 ') and (3 ") is a double blade formed by tying the cutting edges (13) outward and tying each other. Hold the blades (4 ') and (4 ") together with the blades (14) and (14') inside. The central band (15) cut with this double blade is discarded as unnecessary. The blade width is determined by the size of the inner band (15), and the upper blade (3 ') and (3 ") are supported by springs (16) and (16'), while the lower blade (4 ') , (4 ") on the side of the blades (14), (14 '), whereby the paper (P) can be cut stably without the above-mentioned waving phenomenon.

[0006]

[Effects of the Invention] This invention is based on the concept of two single-edged blades, which are used to cut the rolled paper with a slitter so as to prevent waviness from occurring at one of the cut edges of the cut product. The paper is turned outward and is tied to form a double blade, so that the cut product can be stably and neatly cut without causing ripples.

[Brief description of the drawings]

FIG. 1 is a diagram showing a mounting portion of a conventional slitter mechanism.

FIG. 2 is an enlarged view showing a main part of FIG. 1;

FIG. 3 is a diagram illustrating a side surface of a conventional slitter mechanism and a flow of a sheet.

FIG. 4 is a diagram showing a double blade slitter mechanism of the present invention.

[Description of numbering]

 (A), (A ') Slitter mechanism (P) Paper (1) Mounting shaft (2) Rotary shaft (3), (3'), (3 ") Upper blade (4), (4 '), (4 () Lower blade (a1), (a2), (a3) Slitter (6), (6 ') Product (8) Shaded area (9) Wavy phenomenon (12) Inclined section (13) Cutting edge (14) , (14 ') Blade (15) Strip (16), (16') Spring (T) Tension

Claims (1)

[Utility model registration claims] In a device for cutting a roll of paper with a slitter, a cutting edge of two single blades is provided on one side of a cut edge of a cut product in order to prevent a waving phenomenon from occurring. A double-blade slitter mechanism characterized by a double blade that is tied together.