JP2501753B2 - Paper feeder - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet feeding device of a rotary printing machine, and more particularly to a sheet feeding device most suitable for a form printing machine for printing and processing a form.

[0002]

2. Description of the Related Art An air shaft S is inserted into an original fabric P disclosed in FIGS.
Is an air-shaft type paper feeding device that is supported by a cylinder B so as to be rotatable about an axis C, and a pulley E provided on an air shaft S is pressed against a connecting belt G by a brake F to brake when unwinding. Also, the arm J moves along the axis I fixed to the frame H disclosed in FIG. 3, and the arm J is equipped with a taper cone K to clamp the original fabric P, and the taper cone K is braked. 2. Description of the Related Art A sheet feeding device in which braking is performed when unwinding is known.

[0003]

In the former air shaft system shown in FIGS. 1 and 2 which has been publicly known and used, it is necessary to insert or pull out a heavy air shaft into the core of the raw fabric. However, when the taper cone shown in FIG. 3 is used, the raw fabric core is easily damaged. Therefore, when the taper cone is repeatedly used, it is difficult to determine the core position. For this reason, the in-machine tension fluctuates at the printing section, processing section, and folding section.
There were inconveniences such as misregistration of print registration and punch registration, and bad appearance.

[0004]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention allows an air shaft to be inserted into and clamped from an original core without manpower, and the width of an arm of a machine. (EN) Provided is a paper feeding device in which the position in the direction can be freely determined by a motor, and moreover, the arm can be raised and lowered by using the motor to easily position the original fabric.

[0005]

First, the lifting geared motor 10 is driven to lower the lifting frames 13, 13a and the arms 17, 17a,
Furthermore, the movable carriages 4, 4a can be moved by the cylinders 25, 25a.
And the fixed frames 6 and 6a on the movable carriages 4 and 4a are retracted together to retract the elevating frames 13 and 13a and the arms 17 and 17a, and then the original fabric P is rolled into the frame 1 and the frame 1a. By moving the rear movable carriages 4 and 4a along the rails 2 and 2a, the arms 17 and
17a is also moved forward, and further, the arms 17, 17a are movable members 18, 18a which are screwed to a screw shaft 19 on which left and right screws are screwed.
After adjusting the arm width by the rotation of the adjusting motor 20, the original fabric P is pinched from the left and right to be held between them.
0 is driven to move the elevating frames 13 and 13a meshed with the pinions 9 and 9a to the guide rolls 14 and 14a and 24 and 24a.
Is guided and raised, and is aligned using a light emitter / receiver so that the core core of the original fabric P and the paper-carrying shaft core are aligned with each other.
The movable carriage 4 and 4a are used to move the arm 17,
The moving member 27 guided by the rear guide rods 26, 26a, which is determined by retracting 17a forward, is moved by the operation of the cylinder 30 to advance the air shaft 28 directly connected to the electromagnetic brake 29 attached to the moving member 27. Then, the air shaft 28 is fixed by inserting the core of the original fabric P into the tapered hole of the receiving member 31 provided on the frame 1a side, and the core is automatically clamped by the lug provided on the air shaft.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of a sheet feeding device according to the present invention, which will be specifically described with reference to the drawings.

A frame 1 has a pair of left and right rails 2 and 2a arranged in the front-rear direction at intervals on the left and right sides, and its front end side is attached to the frame 1.

One of the rails 2 and 2a is provided with protrusions 3 and 3 on the upper and lower sides thereof, and the protrusions 3 and 3 of the rail 2a are rotatably supported by a plurality of sets on a movable carriage 4a. 5
a is fitted from above and below and held, and a plurality of sets of wheels 5 axially supported by a movable carriage 4 are held on the other rail 2 so as to be held and moved from above and below.

Fixed frames 6 and 6a are erected on the movable carriages 4 and 4a, respectively, and between the frames 6 and 6a, a rotary shaft 8 horizontally mounted on bearings 7 and 7a mounted on the front side. And a pinion 9, 9a is attached to the rotary shaft 8.

Further, one end of the rotary shaft 8 has a fixed frame 6a.
Rotation is transmitted by being connected to the lifting geared motor 10 attached to the.

Further, the fixed frames 6 and 6a are connected by a connecting member 11 such as a tubular body so that the left and right are integrated.

Rollers 14 and 14a for guiding the elevating frames 13 and 13a, in which the bearings 12, 12 and 12a and 12a are attached to the lower portions of the fixed frames 6 and 6a, and the lower portions are projected to the front side, which will be described later, are also provided. Bearing shafts 15 and 15a.

A guide shaft 1 is provided between the elevating frames 13 and 13a.
6 and 16a are fixed horizontally, and the guide shafts 16 and 1
6a has arms 17, 17 horizontally attached to the front.
The movable members 18, 18a provided with a are slidably fitted so as to be guided.

The movable members 18, 18a are the guide shafts 16,
Left and right screws which are positioned between 16a and horizontally supported are respectively screwed into screw shafts 19 which are screwed, and one end of each screw shaft 19 is attached to one of the elevating frames 13 and 13a to adjust the arm width. Contact the motor 20 to adjust the motor 20
Movable member 1 provided with arms 17 and 17a respectively by driving
The arm width is adjusted by moving 8, 18a left and right.

Racks 21 and 21a are vertically installed on the backs of the elevating frames 13 and 13a, respectively.
a is meshed with pinions 9 and 9a provided on the rotary shaft 8, and the elevating frames 13 and 13a are moved up and down by the geared motor 10. Further, on the front side of the elevating frames 13 and 13a, there are provided guide rolls 24 and 24a which are rotatably supported by bearings 23 on the projecting frames 22 which respectively project from the lower side positions of the rotary shafts 8 of the fixed frames 6 and 6a. The roll 1
4, 14a and 24, 24a, lift frame 13,
It is arranged to guide the user at the time of raising and lowering 13a.

The movable carriages 4 and 4a arranged on the left and right sides move forward and backward along the rails of the cylinders 25 and 25a attached to the frame 1. Instead of the air cylinder, the electric rack and pinion type movable carriages 4 and 4a may be movable.

Next, the paper hanging shaft device will be described.

On the frame 1 side, one end is attached to the rear surface of the frame 1 and the other end is connected by a connecting piece T.
An electromagnetic brake in which a moving member 27 is movably slidably fitted to the guide rods 26, 26a, and an air shaft 28 having a taper 28a at its tip is provided on the moving member 27. It is directly connected to 29,
Further, one end of the moving member 27 is connected to the cylinder 30 attached to the frame 1 and the moving member 27 is moved by operating the cylinder 29, and the air shaft 28 is retracted so that the frame 1a corresponding to the frame 1 is made to face. The core member is clamped by inserting it into the receiving member 31 having a taper hole provided by expanding the lug of the air shaft. Electric rack and pinion type moving member 2 instead of air cylinder
7 may be movable. Also the original core 32
The positioning of the air shaft 28 and the air shaft 28 is performed by receiving light from the light projecting device and receiving the light from the light projecting device.
8 is for detecting the position where the core core 32 corresponds.

The receiving member 31 is a gear 33 provided at the shaft end of a gear case 34 having an input shaft rotated by a handle.
And a member 34 rotated by a gear 35 fixed to the receiving member.
It can be moved back and forth by a screw that fits with the screw part provided on the. This allows fine adjustment to the paper edge position.

[0020]

As described above, the present invention adapts the supporting arm that moves up and down to the width of the original fabric, and positions the original fabric core on the supporting arm and the paper hooking device that moves back and forth to move the heavy air shaft. It can be attached to and detached from the original fabric core without manpower, so it does not burden the worker.
Further, since the support arm supporting the original fabric can be freely moved and adjusted in the widthwise position of the original fabric by the left and right screw shafts, there is an effect that the above-mentioned paper feeding device for the original fabric can be easily attached and detached.
It is also possible to make it fully automated.

[Brief description of drawings]

FIG. 1 is a front view of a conventional air shaft type sheet feeding device.

FIG. 2 is a side view of FIG.

FIG. 3 is a front view of a conventional taper cone type sheet feeding device.

FIG. 4 is a rear view showing an embodiment of a paper feeding device according to the present invention.

FIG. 5 is a plan view of FIG.

FIG. 6 is a side view of FIG. 4;

FIG. 7 is a cross-sectional plan view of an adjustment mechanism unit that adjusts the width of an arm provided on a movable member.

8 is a side view of the paper hanging shaft device taken along line XX of FIG.

[Explanation of symbols]

 1, 1a frame 2, 2a rail 3 ridge 4, 4a movable carriage 5, 5a wheel 6,6a fixed frame 7, 7a, 12, 12a, 23 bearing body 8 rotating shaft 9, 9a pinion 10 motor 11 connecting member 13, 13a Lifting frame 14, 14a, 24, 24a Roll 15, 15a Shaft 16, 16a Guide shaft 17, 17a Arm 18, 18a Movable member 19 Screw shaft 20 Motor 21, 21a Rack 22 Overhanging frame 25, 25a, 30 Cylinder 26, 26a Guide rod 27 Moving member 28 Air shaft 28a Taper 29 Electromagnetic brake 31 Receiving member 32 Core core 33,35 Gear wheel 34 Gear case P Original fabric T Connecting piece

Claims (1)

(57) [Claims] 1. In a paper feeding device of a printing machine, a movable carriage that is moved forward and backward in order to determine the center position of an original fabric, and a lifting device that can be raised and lowered along a fixed frame that is erected on the movable carriage. And a movable member that is supported by a guide shaft that is laterally mounted on the lifting device and that has a horizontal original fabric support arm that is screwed to the rotating left and right screw shafts and that moves in the width direction of the original fabric. The air shaft that fixes the original fabric is directly connected to the electromagnetic brake to position the paper tube at the center of the original fabric, and the air shaft paper hooking device for the air shaft that retracts forward with the cylinder is provided in correspondence with the original fabric core. Paper feeder characterized by.