JPH079851U - Paper guide device for sheet-fed printing press - Google Patents

Abstract

(57) [Summary] [Purpose] The paper guide plate can be adjusted accurately and in a short time, and it functions well as a paper guide. [Structure] Reference numeral 16 is a paper guide plate having a guide portion 16a for guiding the printing paper 3 fed onto the difference plate 5, and is fixed to a support block 15 with screws 17. Then, by rotating the adjusting bolt 18, the support block 15 is moved up and down so that the guide portion 16a and the sheet conveying surface of the difference plate 5 are kept parallel to each other.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention guides a printing sheet in a sheet-fed printing press so that the printing sheet fed from the sheet feeding unit onto the difference plate is positioned on the difference plate before being fed to the printing unit so that the positioning can be accurately performed. Paper guide device.

[0002]

[Prior art]

 In the printing operation by the sheet-fed printing press, the printing papers (hereinafter referred to as papers) stacked on the paper stack of the paper feeding device are sucked one by one by the suction port of the sucker device and then conveyed, and then the paper feeding rollers It is sent out on the feeder board by rotation and is conveyed on the feeder board toward the difference plate by a paper feed tape or the like.

The paper that has reached the difference plate and stopped is gripped and conveyed by the claws of the swing device, while being gripped by the claws of the swing device and transferred to the claws of the printing cylinder constituting the printing unit such as the impression cylinder and conveyed. Printing is done, but if the paper stopped on the slip plate is not accurately positioned with respect to the plate on the plate cylinder, high quality printed matter will not be obtained, especially in the case of multicolor printing. Since it is necessary to perform positioning, a positioning device generally called a register device is provided at the tip of the difference plate. Then, a paper guide device is provided to guide the paper fed into the slip plate so that the registration device can accurately perform positioning.

As this paper guide device, for example, there is one proposed by the present applicant and disclosed in Japanese Utility Model Application Laid-Open No. 2-1427448, and the outline thereof will be described below. That is, the paper guide device disclosed herein has an elastic paper guide plate disposed in the vicinity of the printing paper conveyance surface of the difference plate, and the paper guide plate is fixed at one end and the mounting bracket at the other end. The mounting bracket is suspended on the support shaft, and the mounting bracket is capable of variably adjusting the swing angle around the support shaft. The distance between the paper guide plate and the printing paper transport surface can be adjusted.

[0005]

[Problems to be solved by the device]

 However, in the above-described conventional paper guide device, the distance between the paper guide plate and the printing paper conveyance surface is adjusted by changing the swing angle of the mounting bracket, so the distance can be adjusted accurately. In addition to being difficult and difficult, there was a problem that the paper guide plate was inclined with respect to the printing paper transport surface, so that the paper was partially held and did not function sufficiently as a paper guide.

Therefore, the present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to adjust a paper guide plate accurately and in a short time and to sufficiently function as a paper guide. An object is to provide a paper guide device for a leaf printing machine.

[0007]

[Means for Solving the Problems]

 In order to achieve this object, a paper guide device of a sheet-fed printing press according to the present invention includes a support member that supports the other end of a guide member that has a guide surface that extends in the printing paper feed direction at one end. The guide surface is movable so that it can be brought into contact with and separated from the difference sheet while maintaining the parallel to the print sheet conveying surface.

[0008]

[Action]

 According to the present invention, the support member can be moved so that the guide surface is held in parallel with and separated from the printing paper transport surface of the difference plate, so that the amount of movement adjustment of the support member, the guide surface and the printing are performed. The distance adjustment amount with respect to the paper transport surface changes at the same rate.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a paper guide device of a sheet-fed printing machine according to the present invention, FIG. 2 is a rear view of the same, and FIG. 3 is a plan view of the same. In these drawings, reference numeral 2 denotes a feeder board, and the feeder board 2 is sucked and conveyed one by one by a suction port of a sucker device of a sheet feeding unit (not shown), and then the paper is fed by rotation of a paper feed roller. 3 is sent out. At the front end of the feeder board 2 which inclines so as to become lower toward the front, a connecting plate 4 which is inclined at the same gradient as this is fixed, and at the front end of this connecting plate 4, the feeder board 2 and A horizontally long rectangular plate-shaped difference plate 5 that is inclined at the same gradient is fixed. 6 is a conventionally known lateral needle device, which is supported so as to be movable and adjustable in the left-right direction, and is pulled by a roller so that the side edge of the paper 3 fed onto the difference plate 5 comes into contact with the gauge. It is configured so that the left and right directions are aligned.

Above the difference plate 5, the paper guide device 7 of the present invention is arranged. The paper guide device 7 is provided with a fixing block 9 fixed to a left and right frame 8 (only one of which is shown) with a bolt 10. The fixing block 9 is integrally formed with a pedestal portion 9a having a through hole 9b protruding in the lateral direction and a fixing portion 9c having a long hole 9d protruding vertically downward. Reference numeral 11 denotes a sub-support block having a screw hole 11a, which is provided in a pair of right and left (only one is shown) corresponding to the fixed block 9 and fixed by a bolt 12 inserted with play in the long hole 9d. A support block 15 that is fixed to the portion 9c and is a support member extending between the left and right frames 8 is fixed to the left and right sub support blocks 11 by bolts 14.

The support block 15 has a guide portion 16 a formed on the front end side so as to be parallel to the difference plate 5, and the paper guide plate 16 extending between the left and right frames 8 is screwed by a screw 17. It is fixed. Reference numeral 18 denotes an adjusting screw which is inserted into the through hole 9b of the pedestal portion 9a and screwed into the screw hole 11a of the sub support block 11. A compression spring 19 is wound around the adjusting screw 18 and is interposed between the pedestal 9a and the sub-support block 11.

Reference numeral 21 denotes a front contact shaft which is positioned below the slip plate 5 and is rotatably supported. The front contact shaft 21 is fixed with a front contact (not shown) which stands up and down due to the rotation. By raising the front pad and engaging the tip of the front pad with the groove of the slip plate 5, the front end of the paper 3 fed onto the slip plate 5 comes into contact with the front pad and stops. , The paper 3 is positioned.

Reference numeral 22 denotes a swing shaft whose both ends are rotatably supported by the left and right frames 8, and an eccentric ring 23 is fitted to the swing shaft 22. A swing arm (not shown) that has a claw at its free end and swings by a cam mechanism or the like is fitted. With such a structure, when the swing arm swings, the gripping of the paper 3 is performed at the end of the swing, and the paper 3 positioned and registered on the difference plate 5 is clawed by the claws of the impression cylinder 24 by the claws. It is designed so that it can be replaced.

Next, a method of adjusting the paper guide plate in the paper guide device configured as described above will be described. First, the bolt 12 is loosened to release the fixation of the sub-support block 11 to the fixing portion 9c. Here, since the adjusting bolt 18 is screwed into the screw hole 11a of the sub-support block 11 and the sub-support block 11 is biased downward by the compression spring 19, the adjusting bolt 18 is restricted from moving in the vertical direction. Since the bolt 12 is inserted with play in the elongated hole 9d, when the left and right adjusting bolts 18 are rotated by the spanner 20, the sub support block 11 moves up and down.

Along with the vertical movement of the sub-support block 11, the paper guide plate 16 is also vertically moved through the support block 15 while the guide portion 16a is kept parallel to the upper surface of the difference plate 5, that is, the paper transport surface. Move to. When the distance between the guide portion 16a and the paper transport surface can be adjusted, the bolt 12 is tightened to fix the sub support block 11 to the fixing portion 9c.

FIG. 4 shows a second embodiment of the present invention, (a) is a plan view and (b) is a perspective view. In these drawings, reference numeral 40 denotes a rotary operation body having a central shaft 41 axially supported by the frame 8, a plurality of recessed fitting portions 40a provided on the peripheral surface, and a shaft 42 at a position eccentric from the central shaft 41 on the side surface. Has been planted. Reference numeral 43 denotes a support block into which the shaft 42 is inserted in a loosely fitted state, to which the paper guide plate 16 is fixed. Reference numeral 44 is a fixed bracket fixed to the frame 8 and slidably supports two shafts 45 and 46 having pressing portions 45a and 46a formed at their tips. A compression spring 47 is interposed between the pressing portions 45a and 46a and the fixed bracket 44, and the pressing portions 45a and 46a press the peripheral surface of the rotary operation body 40 and the back surface of the support block 43 to rotate the rotary operation body 40. The rotation of the operating body 40 is restricted and the lifting and lowering of the support block 43 is restricted.

In such a configuration, when the tip of the rod-shaped tool 48 is inserted into the recessed fitting portion 40a and the rotating operation body 40 is rotated about the central axis 41 in the A direction, the shaft at an eccentric position is formed. 42 also rotates about the central axis 41 in the A direction, and the support block 43 moves up and down with this, so that the guide portion of the paper guide plate 16 and the paper conveying surface are moved in the same manner as in the first embodiment. The distance is adjusted.

FIG. 5 shows a third embodiment of the present invention, (a) is a perspective view, (b) is a plan view, and (c) is a side view. In the third embodiment, the pin 50 is planted at a position eccentric from the central axis 41 on the side surface of the rotary operation body 40, and the rotary body 51 and the central axis 52 are arranged in parallel with the rotary operation body 40. The frame 8 is rotatably supported by being pivotally supported on the frame 8, and a pin 53 arranged in the same phase as the pin 50 is planted on the side surface, and the support block 43 is connected by a fixed link member 54. . Reference numeral 56 is a connecting plate that faces the link member 54 and assists the connection of the link member 54 that connects the rotary operation body 40 and the rotary body 51 by pin connection. The pressing portion 45a is pressed against the peripheral surface of the rotating body 51.

In such a configuration, when the rotary operation body 40 is rotated in the direction A by the tool 48, the rotary body 51 also rotates at the same time via the link member 54, and the support block 43 fixed to the link member 54. Moves up and down to adjust the distance between the guide portion of the paper guide plate 16 and the paper transport surface. Further, since the peripheral surface of the rotating body 51 is pressed by the pressing portion 45 a, the rotation of the rotating operation body 40 is restricted via the link member 54.

FIG. 6 shows a fourth embodiment of the present invention, (a) is a side view and (b) is a plan view. In the fourth embodiment, a guide member 62 having a guide hole 62a vertically penetrating a fixing plate 61 fixed to the frame 8 is horizontally fixed, and a paper guide having a protrusion 63a fitted in the guide hole 62a is provided. A support plate 63 to which the plate 16 is fixed is provided. The support plate 63 is provided with a habit of ascending by a compression spring 64 interposed between the support plate 63 and the guide member 62 and is in contact with the shaft 42.

In such a configuration, when the rotary operation body 40 is rotated in the A direction by the tool 48, the shaft 42 also rotates, and the rotation of the shaft 42 causes the support plate 63 to have the projection 63a in the guide hole. It is guided by 62a to move up and down, and the distance between the guide portion of the paper guide plate 16 and the paper transport surface is adjusted.

In this embodiment, the paper guide plate 16 is a single member extending between the frames 8. However, it goes without saying that the paper guide plate 16 may be divided into a plurality of members and arranged side by side.

[0023]

[Effect of device]

 As described above, according to the present invention, the support member supporting the other end of the guide member having the guide surface extending in the feed direction of the printing paper fed from the paper feed unit to the difference plate at one end is provided. Since the guide surface is movable so as to be held in parallel with and separated from the printing paper transport surface of the difference plate, it is easy and short to adjust the gap between the printing paper transport surface of the difference plate and the guide surface of the guide member. It can be done in a short time, and since the guide surface is kept parallel to the printing paper transport surface of the difference plate, the guide surface can be guided without adjusting the distance between the printing paper transport surface of the difference plate and the guide surface of the guide member. The guide function by surface is always stable.

[Brief description of drawings]

FIG. 1 is a side view of a paper guide device of a sheet-fed printing press according to the present invention.

FIG. 2 is a rear view of the essential parts of the paper guide device of the sheet-fed printing press according to the present invention.

FIG. 3 is a plan view of an essential part of a paper guide device of a sheet-fed printing press according to the present invention.

FIG. 4 is a second paper guide device of a sheet-fed printing press according to the present invention.
FIG. 3A is a plan view of a main part, and FIG. 6B is a perspective view of the main part.

FIG. 5 is a third paper guide device of a sheet-fed printing press according to the present invention.
Is shown, (a) is a perspective view of a main part, (b) is a plan view of the main part, and (c) is a side view of the main part.

FIG. 6 is a fourth paper guide device of a sheet-fed printing press according to the present invention.
FIG. 7A is a side view of a main part, FIG. 9B is a plan view of the main part, and FIG.

[Explanation of symbols]

 3 Printing Paper 5 Difference Plate 7 Paper Guide Device 8 Frame 15 Support Block 16 Paper Guide Plate 16a Guide Part 18 Adjustment Bolt 40 Rotating Operation Body 43 Support Block 54 Link Member 62 Guide Member

Claims (1)

[Scope of utility model registration request] 1. A paper guide device for a sheet-fed printing press, which guides printing paper fed from a paper feed section to a difference plate, the guide member having a guide surface extending in the feeding direction of the printing paper at one end side. A paper guide device for a sheet-fed printing press, wherein a support member for supporting the end side is movable so that the guide surface holds and separates in parallel with the printing paper conveyance surface of the difference plate.