JP2004155568A - Tractor for automatic paper feeder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tractor for an automatic paper feeder for stably guiding a web paper to be pulled all over a complicated paper feed passage. <P>SOLUTION: The tractor comprises a traveller body 1 for travelling in a guide rail and a connection part 2 provided on the traveller body 1 for connecting the web paper at its end to the traveller body 1. The traveller body 1 is a roller chain type consisting of a plurality of travel rollers 1a spaced from one another and link plates 1b arranged on both sides of the travel rollers 1a for connecting the travel rollers 1a to one another. Each link plate 1b is formed of a flexible material. The traveller body can be formed with a tightly coiled spring. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a towing traveling body for an automatic paper threading device applied to a rotary press.
[0002]
[Prior art]
The rotary press is equipped with an automatic threading device that automatically guides the web from the paper feeding section to the printing section and folding section along the regular threading path.Currently, each rotary press manufacturer has a turn bar section. A fully automatic paper threading device that can handle all paper threading paths, including a paper window and a bay window device, has been almost completed. As the automatic paper threading device, there is known an automatic paper threading device in which a guide rail is provided on a side portion thereof along a paper threading path, and a towing traveling body connected to a leading end of a web is driven along the guide rail by driving means. The drive system of the towing vehicle, the branching / merging mechanism of the guide rail, etc. are slightly different from each other even though there are some differences due to the difference of the towing vehicle. Therefore, in the automatic paper threading device of each rotary press maker, the towing traveling body itself is the biggest feature.
[0003]
For example, in Patent Literature 1, in order to reduce the coefficient of friction with the guide rail and reduce wear, spheres made of a material having a low coefficient of friction and connecting pipes made of a stainless steel pipe are alternately arranged. A towed traveling body is described in which the center holes are connected in a rosary shape through a wire through a wire so as to travel in a guide rail.
[0004]
[Patent Document 1]
JP-A-5-193096
[Problems to be solved by the invention]
However, in the towing traveling body described in Patent Literature 1, both ends of the joint pipe are formed in a conical concave shape, and the adjacent spheres are held at the center of the joining pipe, so that the towing traveling body bends in the paper passage path. Although it can follow to a certain extent or torsion, the only part where the towing traveling body can bend or twist is the connecting part between the ball and the connecting pipe, so the adjusting roller with a large winding angle, bending and twisting are complicated. However, there is a problem that it is impossible to completely follow the turn bar portion and to stably guide the web.
[0006]
Therefore, an object of the present invention is to provide a towed traveling body for an automatic paper threading device capable of stably guiding a towed roll over the entire complicated paper feed path.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problems, a first towed traveling body for an automatic paper threading device of the present invention includes a traveling body main body traveling in a guide rail, and a leading end of a web provided on the traveling body main body attached to the traveling body main body. The traveling body is a roller chain type consisting of a plurality of traveling rollers arranged at intervals and link plates arranged on both sides of the traveling rollers to connect the traveling rollers. The link plate is formed of a flexible material.
[0008]
In the second towed running body for an automatic paper threader according to the present invention, the running body is formed of a tightly wound coil spring. It is preferable that the coil-shaped spring is a close-wound coil with initial tension.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described based on examples shown in the drawings.
[0010]
FIGS. 1A and 1B show an embodiment of a first towing traveling body for an automatic paper threader according to the present invention, wherein FIG. 1A is a front view, FIG. 1B is a plan view, and FIG. FIG. As shown in FIG. 1, the towed traveling body for an automatic paper threading device according to the present embodiment includes a traveling body 1 of a roller chain type and a connecting portion 2 attached to the traveling body 1.
[0011]
The traveling body 1 has a plurality of pulley-shaped plastic traveling rollers 1a arranged at intervals, and the traveling rollers 1a are connected by link plates 1b disposed on both sides of the traveling rollers 1a, and are opposed to each other. Is rotatably mounted on a steel pin 1c bridged between the link plates 1b, 1b. The link plate 1b is formed of a flexible material such as a flexible plastic so that it can cope with not only bending but also twisting.
[0012]
The connecting portion 2 is for connecting and leading the leading end of the paper roll, and extends one of the pins 1c on the rear end side of the traveling body 1 to provide a pin insertion type socket 2a at the leading end. It is a thing. The socket 2a is formed in a cylindrical shape having a slit 2b along the longitudinal direction of the side surface.
[0013]
2A and 2B are schematic views showing a use form of the towing traveling body for the automatic paper threader of FIG. 1, wherein FIG. 2A is an exploded perspective view, and FIG. 2B is a sectional view taken along line BB of FIG.
[0014]
The connection between the connecting portion 2 of the traveling body 1 and the web S is performed via a connecting adapter 3. The connection adapter 3 includes a connection pin 3a and a tab 3b. The leading end of the web S is pasted on the tab 3b, and the connection pin 3a is inserted into the socket 2a of the connection section 2, whereby the web S is connected to the traveling body 1. . In addition to the above, the connection with the web can be performed by attaching a tab string 3c and a tab 3d to the extended pin 1c as shown in FIG. In this case, the extended pin 1c becomes a connecting portion on the traveling body 1 side.
[0015]
As shown in FIG. 2, the traveling body 1 is loaded into a guide rail 4 provided along a paper passing path of a rotary press (not shown). The guide rail 4 is formed to have a U-shaped cross section by extruding aluminum, and semicircular protrusions 4a, 4a are provided on the upper and lower inner surfaces continuously in the running direction. The traveling roller 1a of the traveling body 1 is sandwiched between the projections 4a, 4a and guided while rotating.
[0016]
The traveling body 1 inserted into the guide rail 4 is driven by a drive unit 5 provided in a notch 4 b of the guide rail 4 and travels in the guide rail 4. Specifically, the traveling body 1 is sandwiched between the sprocket 5b on the inverter motor 5a side of the drive unit 5 and the driven pulley 5c, and speed control is performed by the inverter motor 5a. The driving units 5 are arranged in a plurality at such a pitch that a driving force can always be applied to one or two places of the traveling body 1 on the paper passing path.
[0017]
FIG. 4 shows a state of bending and torsion of the traveling body 1. In the present invention, since the link plate 1b of the traveling body 1 is formed of a flexible material, it can cope with both bending and twisting as shown in FIGS. Therefore, it is possible to follow the paper threading path in all directions, and it is possible to cope with an adjust roller having a small radius of curvature or a turn bar portion having a complicated bending and torsion. FIG. 5 shows, for reference, how the guide rail 4 is bent and twisted in the turn bar portion 6 and how the direction of the opening 4c of the guide rail 4 changes in accordance with this.
[0018]
FIG. 6 shows an outline of the branching device 7 necessary on the paper threading path. The branching can be performed by moving the switching block 7a by the driving device 7b as shown in FIGS. The merging is possible by making the reverse route in FIG. 6, but the guide path of the switching block may be fixed as a Y-shape.
[0019]
FIG. 7 is a plan view showing an embodiment of the second pulling traveling body for an automatic paper threader of the present invention. The towed traveling body for an automatic paper threader shown in FIG. 1 includes a traveling body 10 and a hook 20 as a connecting portion provided at a rear end of the traveling body 20.
[0020]
The traveling body 10 is formed of a coiled spring, and the coiled spring is a tightly wound wound with an initial tension. This makes it possible to minimize the elongation of the traveling body 10 against running resistance and a change in the tension of the web when traveling on the guide rails, thereby enabling stable traveling. Further, the tip of the traveling body 10 is formed in a bell-shape by changing the coil winding diameter, thereby facilitating guidance in the guide rail. The spinning portion may be formed by fitting a separate flexible member. As shown in FIG. 8, in the traveling body 10 described above, the tab S 3c is tied to the hook 20, a tab 3d is attached, and the leading end of the web S is attached to the tab 3d to connect the web S to the traveling body 10. I do.
[0021]
FIG. 9 is a plan view showing another embodiment of the second pulling traveling body for an automatic paper threader of the present invention. The towed traveling body for an automatic paper threader shown in FIG. 1 includes a traveling body main body 11 and a connecting portion 21 attached in the middle of the traveling body main body 20.
[0022]
Similar to the embodiment of FIG. 7, the traveling body 11 is made of a tightly wound coiled spring with an initial tension applied, and is divided into two parts, a front end side and a rear end side. Further, the leading end and the rear end of the traveling body main body 11 are formed in a spinning shape by changing the coil winding diameter.
[0023]
The connecting portion 21 is a molded product of a flexible material such as a flexible plastic. As shown in FIG. 10, the two connecting pins 21 a and 21 a are inserted into the traveling body 11 at the front end and the rear end, respectively. Thereby, it is attached in the middle of the traveling body main body 11.
[0024]
FIG. 11 is an exploded perspective view showing a use form of the towing traveling body for the automatic paper threader of FIG.
[0025]
The connecting portion 21 on the traveling body 11 is connected to the web S by attaching a tab 22 to the connecting portion 21 and attaching the leading end of the web S to the tab 22. The traveling body 11 is inserted into a guide rail 40 provided along a paper threading path of a rotary press (not shown). The guide rail 40 has a pipe shape with a circular cross section on the inner surface side, and has an opening 40a for passing the connecting portion 21 and the tab 22 on the side.
[0026]
The traveling body 11 inserted in the guide rail 40 is driven by a drive unit 50 provided in the notch 40b of the guide rail 40 and travels in the guide rail 40. Specifically, the traveling body 11 is sandwiched between the driving pulley 50b and the driven pulley 50c on the inverter motor 50a side of the driving unit 50, and the speed is controlled by the inverter motor 50a. The plurality of driving units 50 are arranged at such a pitch that a driving force can always be applied to one or two places of the traveling body 11 on the paper passing path.
[0027]
As described above, in the second pulling traveling body for an automatic paper threading device of the present invention, since the traveling body is formed of a tightly wound coil-shaped spring, the traveling body has flexibility in all directions. In the same way as the first towed running body for automatic paper threading equipment, it can follow the paper threading path in all directions, and can be used for adjustment rollers with a small radius of curvature and turn bars that have complicated bending and torsion. it can.
[0028]
【The invention's effect】
In the first pulling traveling body for an automatic paper threader of the present invention, traveling in the guide rail can be performed smoothly because the traveling body is a roller chain type. In addition, since the link plate is formed of a flexible material, it can freely respond to bending and twisting. Furthermore, if the link plate and the traveling rollers are made of plastic, they are lighter and easier to handle than ordinary chains.
[0029]
In the second pulling traveling body for an automatic paper threader of the present invention, since the traveling body is formed of a tightly wound coil-shaped spring, the traveling body is flexible in all directions and has a small curvature. It is easy to run even on an adjust roller with a large corner or a turn bar part with complicated bending and twisting. Further, since the traveling body is not based on a combination of parts, the traveling body has a simple shape and is advantageous in cost.
[Brief description of the drawings]
FIG. 1 shows an embodiment of a first pulling traveling body for an automatic paper threader according to the present invention, wherein (a) is a front view, (b) is a plan view, and (c) is an AA arrow of (a). FIG.
FIGS. 2A and 2B are schematic views showing a use form of the towing traveling body for the automatic paper threader shown in FIG. 1, wherein FIG. 2A is an exploded perspective view and FIG. 2B is a sectional view taken along line BB of FIG.
FIG. 3 is a diagram illustrating an example of connection between a towing traveling body for an automatic paper threader and a web.
FIG. 4 is a diagram illustrating a state of bending and torsion of a traveling body main body.
FIG. 5 is a view showing a mode of bending and torsion of a guide rail in a turn bar portion.
FIG. 6 is a diagram showing an outline of a branching device required on a paper threading path.
FIG. 7 is a plan view showing an embodiment of a second pulling traveling body for an automatic paper threader according to the present invention.
8 is a diagram showing an example of connection between the towing traveling body for the automatic paper threader of FIG. 7 and a web.
FIG. 9 is a plan view showing another embodiment of the second pulling traveling body for an automatic paper threader of the present invention.
FIG. 10 is a diagram showing an example of connection between the towing traveling body for the automatic paper threader of FIG. 9 and a web.
FIG. 11 is an exploded perspective view showing a use form of the towing traveling body for the automatic paper threader of FIG. 9;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Running body main body 1a Running roller 1b Link plate 1c Pin 2 Connecting part 2a Socket 2b Slit 3 Connecting adapter 3a Connecting pin 3b Tab 3c Tab string 3d Tab 4 Guide rail 4a Projection 4b Notch 4c Opening 5 Drive 5a Inverter motor 5b Sprocket 5c Followed pulley 6 Turn bar portion 7 Branching device 7a Switching block 7b Drive device 10, 11 Traveling body 20 Hook (connecting portion)
21 connecting portion 21a connecting pin 22 tab 40 guide rail 40a opening 40b notch 50 driving portion 50a inverter 50b driving pulley 50c driven pulley S web

Claims (3)

A towed traveling body for an automatic paper threading device that travels along a guide rail of an automatic paper threading device arranged along a paper threading path of a rotary press,
A traveling body that runs on the guide rails, and a connecting portion provided on the traveling body to connect the leading end of the web to the traveling body.
The traveling body has a plurality of traveling rollers arranged at intervals, and a link plate disposed on both sides of the traveling rollers to connect the traveling rollers, and the link plate is formed of a flexible material. A traction traveling body for an automatic paper threading device, comprising: A towed traveling body for an automatic paper threading device that travels along a guide rail of an automatic paper threading device arranged along a paper threading path of a rotary press,
A traveling body that runs on the guide rails, and a connecting portion provided on the traveling body to connect the leading end of the web to the traveling body.
The towed running body for an automatic paper threading device, wherein the running body is formed of a tightly wound coil spring. The towed running body for an automatic paper threading device according to claim 2, wherein the coiled spring is a close-wound coil having an initial tension.

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