JPH0458567U

JPH0458567U -

Info

Publication number: JPH0458567U
Application number: JP9986390U
Authority: JP
Priority date: 1990-09-25
Filing date: 1990-09-25
Publication date: 1992-05-20

Description

[Brief explanation of drawings]

第１図ないし第７図は本実施例を示す図で第１
図はその側面図、第２図は第１図のＶ矢視図でチ
ヨツパブレードが下限に来たときの図、第３図は
第２図のＢ−Ｂ断面図、第４図はチヨツパブレー
ドが下限位置に来たときの説明図でロはイのＸ矢
視図、第５図はチヨツパブレードの形状の他の実
施例を示す図、第６図はチヨツパロールの溝に折
丁ガイド用のエンドレスベルトを設けた場合の説
明図、第７図は第６図のＹ矢視図、第８図および
第９図は従来例を示す図で第８図イは側面図、第
８図ロは第８図イのＺ矢視図、第９図は第８図の
チヨツパブレードが下降して折丁を２つ折りする
ときの図である。１５……エンドレスベルト、３２……エツジ、
ｈ……チヨツパブレードの厚さ、Ｈ……溝の空隙
の巾、ａ……チヨツパブレードのエツジ下限位置
。 Figures 1 to 7 are diagrams showing this embodiment.
The figure is a side view, Figure 2 is a view taken from the V arrow in Figure 1 when the chopper blade reaches the lower limit, Figure 3 is a sectional view taken along line B-B in Figure 2, and Figure 4 shows the chopper blade at the lower limit. Figure 5 is a diagram showing another example of the shape of the tipper blade, and Figure 6 is an illustration of an endless belt for guiding signatures in the groove of the tipper roll. 7 is a view in the Y direction of FIG. 6, FIGS. 8 and 9 are views showing conventional examples, and FIG. 8A is a side view, and FIG. 8B is a side view of FIG. FIG. 9 is a view from the direction of the Z arrow in FIG. 8, when the tipper blade of FIG. 8 descends to fold a signature in two. 15... Endless belt, 32... Edge,
h... Thickness of the chopper blade, H... Width of the gap in the groove, a... Lower limit position of the edge of the chopper blade.

Claims

[Claims for Utility Model Registration] (1) A pair of tipper rolls whose outer peripheries are in contact with each other and which rotate inwardly in different directions, and a slit provided on the upper part of the tiple rolls and directly above the contact line of the pair of tipper rolls. and a tipper table having a tipper roll, which is located directly above the contact line of the pair of tipper rolls, moves forward and backward with respect to the same line, and advances the signatures supplied onto the table from the retreated position,
A chopper folding device having a chipper blade extending in the direction of the contact line, which is pressed from above through a slit in the table to push the signature between the pair of chipper rolls and fold the signature in half, wherein A plurality of circumferential grooves facing each other are provided in the width direction, and the grooves facing each other form a gap between the pair of rolls, and correspond to the gap at the edge of the chopper blade that contacts the signature. A chopper folding device characterized in that a protrusion narrower than the groove width and inserted into the gap when folding a signature in half is provided at a position where the folding is performed. (2) The tipper folding device according to claim 1, wherein the grooves of the pair of tipper rolls are each provided with an endless signature guide belt that is driven in the direction of travel of the signature by the rotation of the tipper rolls. (3) The chopper folding device according to claim 1 or 2, wherein the protrusion of the chopper blade has a sawtooth tip. (4) The tipper folding device according to claim 1 or 2, wherein the protrusion of the tipper blade has a semicircular shape or a similar shape.