JP2586520Y2 - Needle pulling device for printing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention is provided at a side end of a feeder board in a paper feeding section of a printing press, and one side end of a printing paper fed on the board. The present invention relates to a needle pulling device in which a side register plate of a needle pulling device for positioning a needle is improved.

(Prior Art) Generally, as shown in FIG. 4 (a), a printing paper A fed one by one onto a feeder board 1 of a printing machine paper feeding unit is supplied to a front abutment unit 2 by a front end of the printing paper. After A2 contacts, the printing paper A
Drawing device 3 whose side end A1 is set at the side end of the board 1.
The side edge A1 is brought into contact with the side register plate 3a of the needle pulling device 3 by the pressing roller 5 of the needle pulling device 3, so that the front edge A2 and one side edge of the printing paper. After the sections A1 are positioned, the printing paper A is sent out in front of the front contact section 2 and printed by a printing unit (not shown).

FIG. 4 (b) is a schematic enlarged front view of an example of the conventional needle pulling device 3. A register plate 3a is provided on one side of the needle pulling device 3, and a driving rotating roll 4 and a pressing roller 5 are provided at intervals above and below the feeder board 1, and a rotating roller 4 and a pressing roller 5 are provided. Between the side edges of the printing paper A
After A1 is introduced and the front end portion A2 of the printing paper comes into contact with the front contacting portion 2, the pressing roller 5 descends to pinch the printing paper A between the rotating roll 4 and the pressing roller 5, and the register on the side. It is to draw to the position of the plate 3a. Assuming that the drawing distance is a, a1 while the printing paper A is in contact with the roller 5
The length from to a3 is similarly a. However, if it is necessary to set the partial area c1 of the print area C to fall within the contact sections a2 to a3 of the roller 5 on the printing paper A due to the print specification such as the print area, In addition, roller traces were generated due to the slip of the roller 5 on the printing paper surface. For this reason, it is necessary to change the position of the register plate 3a and print the plate 3a closer to the printing paper side end A1, but the register plate 3a of the conventional needle pulling device 3 cannot perform fine adjustment in millimeter units. Even 1 Cm to several C
The macro adjustment of m was not possible.

(Purpose of the Invention) In the present invention, the roller traces generated when the pressing roller of the needle drawing device rolls on the printing paper surface and slips with respect to the printing paper surface in the printing area inside the side edge of the printing paper. An object of the present invention is to make it possible to macroscopically change the position of the side register plate according to the printing specifications so as not to cause the occurrence of roller traces in the printing area.

(Structure of the Invention) The present invention is directed to a side register plate for positioning an end portion of a printing paper conveyed and fed along a feeder board, and sandwiching the inner side of the printing paper side from above and below in a vertical direction. In a needle pulling device of a printing press paper feeding unit provided with opposing pressing rollers and a driving rotary roll for pulling the ends to abut, the position can be changed in parallel with the side of the printing paper side end direction on the side register plate. A needle pulling device for a paper feed unit of a printing press, characterized in that an adjusting plate is provided so as to be attachable and detachable, and when the adjusting plate is mounted, the printing paper side end is drawn so as to bring the printing paper side end into contact with the adjusting plate.

(Operation of the Invention) In the present invention, since the adjustment register plate 7 which can be macroscopically changed in position in parallel with the register plate 6 of the needle pulling device is provided, the needle pulling amount a from a0 to a1 can be obtained.
The needle pulling operation can be performed with the needle pulling amount reduced to b (b = a−c1), so that the roller trace caused by the roller 5 in the print area C can be prevented.

(Embodiment) The present invention will be described in detail with reference to the drawings. FIG. 1 (a) is a front view of a needle pulling device according to an embodiment of the present invention. The side register plate 6 provided for adjustment is provided in parallel with the vertical surface of the side register plate 6 provided on the side of the side. The plate 7 includes a plate portion 7a and a mounting portion 7b bent at a right angle to the plate portion 7a, and a long hole portion 7c is formed in the mounting portion 7b, and is mounted in the long hole portion 7c. It is attached to the upper surface of the side register plate 6 using a set screw 8 that passes through and is removably screwed. Adjust plate 7 in FIG.
Is set to a position where the printing paper A is supplied to the feeder board 1 and conveyed, the conveyance of the printing paper A is temporarily stopped in a state where the printing paper A is in contact with the front contact portion 2 on the feeder board 1, and the pressing roller 5 is driven. An end ac of the printing area to be printed on the side end A1 of the printing paper A introduced between the roll 4 and the contact point a2 of the pressing roller 5
The plate portion 7a of the adjustment plate 7 is positioned so that the distance from the side edge A1 of the printing paper A becomes b, where b is the amount of subtraction (ac-a2). And
It is fixed on the plate 6 with a set screw 8. The difference (ab) between the amount of needle pull when the adjust plate 7 is mounted and the amount of needle pull when the adjust plate 7 is mounted (ab) is usually about 5 mm to 1 Cm.

FIG. 1 (b) shows the setting of the adjustment plate 7 as shown in FIG. 1 (a), the pressing roller 5 of the needle pulling device is lowered, and the inside of the side end of the printing paper A is connected to the driving roll 4. Between the printing paper A side end A1
The position (a1) is in contact with the position ax of the plate portion 7a of the adjustment plate 7, and the needle pull amount is b.

FIG. 2 (a) shows another embodiment of the present invention having a cover plate 9, which is a movable type in which the register plate 6 of the needle pulling device moves up and down integrally with the pressing roller 5. 5 and a register plate 6 to which an adjusting plate 7 is attached by a set screw 8 fitted in the long hole portion 7C is integrally attached to a cover plate 9, and the cover plate 9 is provided on a side end of the feeder board 1. It is integrally attached to a sliding body 11 that slides up and down along a slide guide 10 provided. The intermittent up and down movement of the slide 11 which operates for the supply of the printing paper A one by one causes the pressing roller 5 to move.
The adjust plate 7 of the register plate 6 moves up and down. Then, the side end portion A1 of the printing paper A introduced between the pressing roller 5 and the driving roll 4 is sandwiched between the pressing roller 5 and the driving roll 4 by the lowering of the pressing roller 5, and is shown in FIG. Move to the side of the adjustment plate 7 and abut on the vertical surface of the plate portion 7a of the plate 7 to regulate the side position. And the plate 7
The distance to be set between the printing paper A and the side end A1 of the printing paper A is the amount of deduction (ac-a2) between the printing area end ac and the contact point a2 of the pressing roller 5, as in the first embodiment. b.

FIGS. 3 (a) and 2 (b) are a front view and a plan view for explaining details of an example of a vertical movement mechanism of the needle pulling device in another embodiment of the present invention shown in FIG. A spring that urges the upper side of the sliding body 11 that slides in the downward direction, 13 is a pressing adjustment screw that adjusts the urging force of the spring 12 via the sliding urging plate 11a, and 14 is the drive roll 4 An eccentric cam for vertically operating the sliding body 11 integrally mounted and fixed to the drive shaft 4a, 15 is a fulcrum 16
A free-rotating roller 15b is provided on a shaft 15a provided at one end of the arm 15, and the roller 15b
Operates along the cam 14, and acts on the lower side of the sliding body 11 by swinging through the fulcrum 16 of the other end 15c of the arm 15 to move the sliding body 11 up and down. 7 is a bracket
A lower stop adjusting screw for regulating the lower stop of the sliding member 11 is attached to 17a, and a spring 18 presses the roller 15a of the swing arm 15 against the cam 14 side.

(Effects of the Invention) According to the present invention, when positioning the printing paper in the sheet-fed printing press, an adjustment plate is provided on the register plate of the needle pulling device, and the needle pulling operation by the needle pulling device causes the trace of the needle pulling roller in the printing area. The needle pulling distance can be shortened on a macroscopic order so that it does not occur, and it is possible to reliably prevent the occurrence of roller traces that could not be sufficiently achieved by fine adjustment of the register plate of the conventional needle pulling device. It is of practical value because it can be easily adjusted to prevent the traces of the rollers on the printing paper area corresponding to the printed product portion.

[Brief description of the drawings]

1 is a front view and a plan view of an embodiment of the present invention, FIG. 2 is a front view and a plan view of another embodiment of the present invention, and FIG. 3 is a front view illustrating details of FIG. FIG. 4 (a) is an explanatory view of a needle pulling operation by a conventional needle pulling device, and FIG. 4 (b) is a front view of the conventional needle pulling device. DESCRIPTION OF SYMBOLS 1 ... Feeder board, 2 ... Forehead part 3 ... Needle drawing device, 4 ... Driving roll 5 ... Pressing roller 6 ... Register plate 7 ... Adjust plate 8 ... Set screw 9 ... Cover plate 10 ... Sliding guide 11 ... Sliding body, 12,18 ... Spring 13 ... Press adjustment screw, 14 ... Eccentric cam 15 ... Swing arm, 16 ... Support point 17 ... Set screw for lower stop point adjustment

Claims (1)

(57) [Scope of request for utility model registration] 1. A side register plate for positioning a side edge of a printing paper conveyed and fed along a feeder board, and a side edge portion of the side edge of the printing paper side which is sandwiched from above and below the plate. In a needle pulling device of a printing press paper feeding unit provided with an opposing press roller and a driving rotary roll for bringing in contact with each other, an adjust plate that can be repositioned in parallel to a printing paper side end is attached to a side register plate. A needle pulling device for a paper feed section of a printing press, wherein the printing paper feeding section is detachably provided so that an end of the printing paper is in contact with the adjustment plate when the adjustment plate is attached.