JPH0340832Y2 - - Google Patents

Description

[Detailed description of the invention] A. Purpose of the invention [Industrial application field] The present invention is intended for use in printing machines in which paper is fed in the lateral direction when it is fed to the printing section by a feeding operation such as a tape drive. Relating to a registration device.

The paper fed to the printing section comes into contact with the stop finger, performs front registration, and stops at a predetermined position. However, in this state, there is a deviation from left to right, that is, in the lateral direction, so that it cannot be kept in the predetermined position and orientation. It is necessary to regulate.

Generally, the lateral registration of paper feed is performed by a flat spring and a push plate that constantly moves back and forth with respect to the flat spring. This is possible by adjusting the movement in the horizontal direction.

[Conventional technology]

However, in the conventional side alignment device, the flat springs on the operating side and the non-operating side are provided independently (see Japanese Patent Publication No. 59-24687 and Japanese Patent Application Laid-Open No. 56-23152). If you want to move the paper feeding position of the plate cylinder with respect to the printing plate in the horizontal direction, it is necessary to move and adjust either the push plate or the flat spring, and then adjust the other by the same amount in the same direction. Therefore, when making this adjustment, not only is it necessary to temporarily interrupt printing, but also it is troublesome to set the printer properly, which is very time-consuming and labor-intensive.

[Problems to be solved by the invention] Therefore, as a result of studies in view of the above-mentioned problems of the conventional method, the present invention has been developed by installing a flat spring mounting shaft in parallel with the push plate mounting shaft on the paper feed tray frame so as to be able to slide. death,
By configuring these mounting shafts to be interlocked with the operating shaft rotatably installed on the frame via axial feeding means, easy operation can be achieved by simply rotating a single operating shaft. Therefore, the press plate and flat spring can be finely adjusted by the same amount in the same direction and at the same time, making it possible to adjust the horizontal movement of the paper feed position of the plate cylinder relative to the printing plate without interrupting printing. That is its purpose.

B. Structure of the invention [Means for solving the problem] In other words, the present invention has a push plate mounting shaft for movably attaching the push plate to the paper feed tray frame in the axial direction via a set screw, and a set screw. The flat spring mounting shafts on which the flat springs are mounted movably in the axial direction are installed parallel to each other so as to be slidable in the axial direction of the shafts, and the operating shafts are rotatable and movable with respect to the paper feed table frame. one end of a push plate operating link installed in parallel with the push plate mounting shaft and the flat spring mounting shaft, and pivotally connected to a threaded feeding means provided on the non-operating side of the operating shaft; is pivoted to the opposite operation side of the push plate mounting shaft biased with a spring force in the axial direction, the other end of the push plate operating link is engaged with the push plate operating cam, and the screw type feed of the operating shaft is The means and the flat spring mounting shaft are supported and connected to the intermediate portion and the distal end portion of a flat spring operating link whose base end is swingably supported with respect to the paper feed tray frame, or the operating shaft and the flat spring By connecting the threaded feeding means provided on the flat spring mounting shaft with a gear train, etc., the push plate and the flat spring can be moved in the same direction and by the same amount by rotation of the operating shaft, thereby solving the above problem. This solved the problem.

〔Example〕

Embodiments of the present invention will be described in detail below based on the drawings. First, in the first embodiment, as shown in FIGS. 1 and 2, the paper feed tray frames 1 and 1' have push plate mounting shafts
The flat spring mounting shaft 3 is slidably slidable in the axial direction, and the operating shaft 4 is rotatably penetrated and installed in parallel.

Both ends of the push plate mounting shaft 2 are attached to the frame 1,
A retaining ring 6 having a compression spring 5 mounted thereon and both ends of the operating side frame 1 are supported on the protruding end of the operating side a, respectively, from the operating side frame 1, thereby supporting the push plate pressing shaft. 2 is biased by a spring force toward the operating side a in the axial direction, and one end of the push plate actuating link 7 is rotatably attached to the protruding end of the non-operating side b with a shaft pin 8. , the above frames 1, 1'
In between, on the operation side a, a push plate 9 is fixed by a set screw 10 so as to be movable and adjustable in the axial direction, that is, in the lateral direction with respect to the paper feeding direction c shown by the arrow in FIG.

On the other hand, one end of a flat spring operating link 11 is rotatably attached to the protruding end of the flat spring mounting shaft 3 on the non-operating side b that protrudes outward from the frame 1' with a shaft pin 12. and located between the frames 1 and 1' on the opposite operation side b
A flat spring 13 is movably fixed by a set screw 14.

A handle knob 15 is integrally and rotatably fixed to the protruding end of the operating shaft 4 that protrudes from the frame 1 toward the operating side, while a handle knob 15 is rotatably fixed to the protruding end that protrudes from the frame 1' toward the non-operating side. has a male threaded portion 16a and a female threaded portion 16b that are screwed together,
Further, a screw type feeding means 16 is provided which can be moved in the axial direction by rotation of the operating shaft 4, and the pushing plate operation link 7 is connected to the feeding means 16 so as to be swingable about a fulcrum d. On the other hand, the flat spring mounting shaft 3 has its operating link 11
It is pivotally connected to the feeding means 16 about a fulcrum e so as to be movable in the axial direction via the fulcrum e, so that rotation of the operating shaft 4 causes the push plate mounting shaft 2 and the flat spring to move. The mounting shaft 3 is configured to be able to move simultaneously in the axial direction.

Here, a roller 17 is pivotally supported at the other end of the push plate operating link 7, and the roller 17 is connected to a push plate operating cam 18 which is provided so as to be able to constantly reciprocate in the paper feeding direction c by driving the printing machine. By being in constant contact with the spring force of the compression spring 5, the push plate operating cam 18 swings back and forth about the fulcrum d, thereby causing the push plate mounting shaft 2 to move toward the push plate 9. The sheet is reciprocated in the axial direction with the push plate 9 pressing the operating side end of the sheet feeder (not shown) and abutting the other side end against the flat spring 13, thereby feeding the sheet. Performs lateral registration.

In the first embodiment described above, the feeding means 16 is provided on the operating shaft 4, and the feeding means 16 and the flat spring mounting shaft 3 are interlocked and connected by the operating link 11. The other end of the operating link 11 is pivotally connected to a fulcrum shaft 19 projecting from the frame 1' via a pin 20, and a substantially intermediate portion of the operating link 11 is pivotally connected to the feeding means 16.

Here, the feeding means 16 has a male threaded portion 16a provided around the protruding end of the operating shaft 4, and a female threaded portion 16b compatible with the male threaded portion 16a provided on the inner peripheral surface of the through hole. It is formed by screwing an adjusting nut 16c onto the male threaded portion 16a. Also, operation axis 4
A nut 21 is fixed to the end of the adjuster nut 16c to prevent the adjuster nut 16c from coming off.

Thus, the push plate actuating link 7 and the flat spring actuating link 11 are pivotally attached to the adjusting nut 16c by pivots 22 and 23, respectively.

Further, by pivotally connecting the operating links 7 and 11 in this manner, rotation of the adjusting nut 16c is prevented, and therefore the operating shaft 4
The above adjusting nut 16c is rotated in the forward and reverse directions.
can be reciprocated in the axial direction indicated by the arrow ←→ in FIG.
The fulcrum d and the force point e, which are pivotally connected to the 11 adjusting nuts 16c, are moved in the axial direction, thereby moving the push plate mounting shaft 2 and the flat spring mounting shaft 3 simultaneously and in the same direction. 9 and the flat spring 13 are adjusted in position.

In addition, in order to move both the mounting shafts 2 and 3 by the same amount, the fulcrum d, force point g, and point of action h of the push plate operating link 7 and the fulcrum f, force point e, and point of action i of the flat spring operating link 11 are arranged. The length between them is determined at a constant ratio.

Next, the second embodiment of the present invention will be described in detail.
As shown in FIG. 3, the flat spring mounting shaft 3 is connected to the flat spring operating link 11.
The means of transportation has been changed.

A gear 16d is fixed to the inner side of the male threaded portion 16a at the protruding end on the opposite operation side of the operating shaft 4, while a male threaded portion 16e is attached to the protruding end on the opposite operation side of the flat spring mounting shaft 3. A threaded gear 16g having a female threaded portion 16f in the center hole is screwed together, and the gear 16g is prevented from moving in the axial direction by a gear holder 24, thereby forming a feeding means 16'. An idle gear 16h is rotatably supported on a stud shaft 25 protruding outward from the frame 1', and the idle gear 16h is connected to the gear 16d.
and threaded gear 16g, respectively.

On the other hand, the push plate mounting shaft 2 is interlocked and connected to the adjustment nut 16c of the operating shaft 4 by the push plate operating link 7, as in the first embodiment.

That is, in the first embodiment, the feeding means 16, the push plate mounting shaft 2, and the flat spring shaft 3 are connected by operating links 7 and 11, respectively, whereas in the second embodiment, the operating shaft is 4 and the flat spring mounting shaft 3 are respectively provided with feeding means 16, 16', and both feeding means 16, 16' are interlocked by a gear transmission mechanism, and the operating shaft 4 and the flat spring mounting shaft 3 are connected by the gear transmission mechanism. The shaft 3 is connected, and the other parts are formed the same as in the first embodiment.

When the operating shaft 4 is rotated forward or backward, the adjusting nut 16c is moved in the axial direction, and the fulcrum d of the push plate operating link 7 is moved in the axial direction, thereby causing the push plate mounting shaft 2 to move in the axial direction. Lateral movement is possible in the same manner as in the first embodiment, and at this time gear 1
6d, threaded gear 16 via idle gear 16h
g is rotated, but the threaded gear 16g is prevented from moving in the axial direction by the gear holder 24 and rotated in a fixed position, so the flat spring mounting shaft 3 is rotated in the axial direction with respect to the threaded gear 16g. It is moved laterally with the flat spring 13.

Here, both male threaded portions 16a, 16e and both female threaded portions 16b, 16f of both said feeding means 16, 16' are connected.
The pitch and direction of each screw are set so that the push plate 9 and the flat spring 13 can move simultaneously and by the same amount in the same direction, as in the first embodiment.

Further, the lateral movement of the push plate 9 and the flat spring 13 by the operation shaft 4 is applied to fine adjustment, and when moving these by a large amount or adjusting the interval between them to a size corresponding to the paper feed size. This is performed by manual operation after loosening the setscrews 10 and 14 on the respective mounting shafts 2 and 3.

[Effect of idea]

Since the present invention is constructed as described above, in the paper feed tray, the operating side a and the non-operating side b
When moving the push plate 9 and flat spring 13, which are arranged in Since it can be moved, it is possible to properly and quickly adjust the paper feed position relative to the printing plate while checking the printing status without interrupting printing. , 16' transmits the axial movement force of the push plate mounting shaft 2 and the flat spring mounting shaft 3 through the link mechanism, gear transmission mechanism, etc., so that the lateral movement of the push plate 9 and the flat spring 13 is reduced. It has practical effects such as being suitable for adjustment.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a first embodiment of the paper feed registration device for a printing press according to the present invention, FIG. 2 is a cross-sectional view taken along the line - - in FIG. FIG. 7 is a partial plan view showing a second embodiment. 1, 1'... Paper feed table frame, 2... Push plate mounting shaft, 3... Flat spring mounting shaft, 4... Operating shaft, 7... Push plate operation link, 9... Push plate, 13
...Flat spring, 16...Screw type feeding means, 16a, 16e...Male thread part, 16b, 16
f...Female screw part, 18...Press plate operating cam, d...
Swinging fulcrum.

Claims (1)

[Scope of utility model registration request] For the paper feed tray frame 1, 1', set screw 10
The push plate mounting shaft 2, which mounts the push plate 9 so as to be movable in the axial direction via the push plate 9, and the flat spring mounting shaft 3, which mounts the flat spring 13 so as to be movable in the axial direction via the setscrew 14, are mounted in the axial direction of the shaft. The operating shaft 4 is rotatable relative to the paper feed tray frames 1 and 1' and parallel to the push plate mounting shaft 2 and the flat spring mounting shaft 3. The push plate is constructed such that one end of the push plate actuation link 7, which is swingably pivoted to the screw-type feeding means 16 provided on the opposite side of the operation shaft 4, is biased with a spring force in the axial direction. It is pivotally connected to the non-operating side of the mounting shaft 2, and engages the other end of the push plate operating link 7 with the push plate operating cam 18. are supported and connected to the intermediate and distal ends of a flat spring operating link 11 whose base end is swingably supported with respect to the paper feed tray frame 1, 1', or connected to the operating shaft 4. By connecting the screw-type feeding means 16' provided on the spring mounting shaft 3 through gear trains 16d, 16h, 16g, etc., the push plate 9 and the flat spring 13 move in the same direction as the operating shaft 4 rotates. A paper feed registration device for a printing press, characterized in that it is capable of interlocking the same amount.