JPH0644628Y2 - Cutter rotor rectifier - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] This invention relates to a cutter for cutting a web of paper, plastic, foil or the like, which is a stack of one or more sheets, and a groove of a cutter rotor of an upper blade fine adjustment bolt. The present invention relates to a rectifying device for a cutter rotor which is a rectifying plate that serves as a web guider and whose outer peripheral surface is a cover that can be freely opened and closed.

[Conventional technology]

A conventional cutter has a structure in which a lower blade is provided on a fixed base, an upper blade is provided on a cutter rotor of a rotating body that meshes with the fixed base, and the web is cut by passing between both blades by rotation of the rotating body.

Therefore, a groove for the fine adjustment bolt of the upper blade attached to the cutter rotor is required, and there is no one that covers this groove.

That is, the groove portion of the cutter rotor was left to stand. Therefore, the flow of air was not stable due to the groove, the trailing edge of the cut sheet flew up, the flow was obstructed, and the line speed could not be increased.

[Problems to be solved by the invention]

However, there is a limit to cutting the web with such a structure.

The reason is that the rear end of the sheet (hereinafter referred to as cut paper and the like) after cutting the web and the tip of the web (hereinafter referred to as long paper and the like) are in the above groove while the cutter rotor is rotating. Set up. As a result, turbulence is generated, or negative pressure is applied to that part, and the sheet is sucked by the cutter rotor, obstructing the flow of the sheet and the web, and the speed of the cutter is slow, or the sheet is bent or damaged. The defect came out.

Therefore, the present invention is to enable smooth and stable flow of sheets at high speed.

[Means for solving problems]

The technical means of the present invention for solving the above-mentioned problems is to construct a hinge (free hinge) opening / closing plate in the groove of the cutter rotor.

[Action]

 The operation of this technical means is as follows.

That is, if the groove of the cutter rotor is left as it is, the cutting of the web prevents the leading edge or the trailing edge of the sheet from entering the groove and causing trouble.

Therefore, a flow straightening plate is provided in the groove of the cutter rotor so as to cover the outer periphery of the cutter rotor to the same extent, so that the gas flow smoothly flows on the circumference and the air flow is stabilized. As a result, the trailing edge of the sheet enters the groove and is prevented from being sucked, in-processed, intruded and damaged. Further, the sheet can smoothly flow on the outer circumference of the cutter rotor, and stable and reliable sheet conveyance can be achieved even for a thin and weak sheet.

〔Example〕

An embodiment of the present invention will be described below with reference to the accompanying drawings.

In the figure, 1 is a rotary cutter rotor that cuts one or a plurality of stacked webs w. An upper blade 2 for cutting the web w is attached to the cutter rotor 1, and an upper blade fine adjustment bolt 3 for adjusting this is interposed. The upper blade fine adjustment bolt 3 is provided with a groove 4 in the cutter rotor 1 and pushes the tip of the bolt from the back side of the upper blade 2 to finely adjust the ups and downs of the upper blade 2. This is adjusted by the thickness of the lower blade 5 (a fixed die is shown in the figure) and the web w.

Now, when the web w is cut by the cutter, the current plate 6 is provided to cover the groove 4 on the front side of the upper blade 2.

The straightening plate 6 is provided with a hinge (hinge) 8 at one end, and the hinges 8 are attached to both ends of the cutter rotor 1. Further, an insertion pin 9 is provided in the middle of the straightening vane 6 so that it can be opened and closed by removing the insertion pin 9, and the straightening vane 6 can be raised and lowered to an opening / closing AB like a hinge. . At that time, when the adjustment of the upper blade 2 is completed, the current plate 6 is raised in the opening / closing direction A so as to be aligned with the bracket 7 attached to one side of the cutter rotor 1.
Therefore, the rectifying plate 6 has a hinge as shown in the figure, and is removed from the side of the pin 9 by inserting and removing the insertion pin 9. A spring may be used instead of the insertion pin 9, and as with the pin 9, the straightening plate 6
It is possible to adjust the adjusting bolt 3 by holding down and using a tool such as a spanner.

Therefore, the vicinity of the groove 4 of the cutter rotor 1 can be covered to the same extent as the outer periphery of the cutter rotor 1 by the bracket 7 and the rectifying plate 6. Therefore, due to the above influence, the flow of gas smoothly flows on the circumference to prevent the generation of turbulence, and the phenomenon of suction is also prevented, and the sheet S is prevented.
Further, the front end and the rear end can smoothly and reliably flow on the straightening vane 6 without hindering the flow of the web w.

Further, in this embodiment, the cross cutter (upper blade rotary type, lower blade fixed type) has been described, but a synchro fly cutter (upper and lower blade rotary type) also covers the adjusting groove to ensure a stable flow of the sheet. be able to.

[Effect of device]

According to the present invention, the flow straightening plate is provided in the groove of the cutter rotor that facilitates the adjustment of the blade engagement and ensures the sheet flow. Therefore, when adjusting the thickness of the seat, the former can easily open and close the rectifying plate by moving the hinges and pins that are like hinges before adjusting the adjusting bolts, and adjusting the adjusting bolts. There is an advantage that it is easy to make.

The latter is a stable rectifier plate after adjusting the adjusting bolt, which acts as a guider during sheet conveyance to smooth the flow of the sheet, increase the cutter speed, and prevent damages due to sheet tackling. The practical effect of being able to carry is great.

[Brief description of drawings]

FIG. 1 is a side view of a cutter device according to an embodiment of the present invention. 1 ... Cutter rotor, 2 ... Upper blade, 3 ... Adjustment bolt,
4 ... Groove, 5 ... Lower blade, 6 ... Straightening plate, 7 ... Bracket, 8 ...
Hinge, 9 ... Insertion pin, A ← → B ... Opening / closing direction, w ... Web, s ... Sheet.

Claims (1)

[Scope of utility model registration request] 1. A rotary knife type cutter for cutting a web, in which a lower blade 5 and an upper blade 2 formed by a cutter rotor 1 are attached to adjust a meshing.
Of the cutter rotor 1 is provided around the hinge 8 attached to one end of the cutter rotor 1 when the hinge for attaching and detaching the insertion pin 9 is opened. A straightening device for a cutter rotor characterized in that it can be pressed against a bracket 7 having substantially the same outer circumference, and can be freely opened and closed between AB, and the outer peripheral surface can be used as a guider for the sheet S to straighten the sheet.