JP3206880B2 - Sheet feeding device - 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 conveying path having a direction changing portion in which the conveying direction is bent in the width direction of a sheet, and automatically guides the leading end of a band-shaped sheet along the sheet conveying path. The present invention relates to a sheet feeder that can be passed through, can improve sheet conveyance efficiency, and can increase the degree of freedom in factory layout.

[0002]

2. Description of the Related Art For example, in a manufacturing process and a processing process of a long band-like sheet such as a film, a sheet conveying path for supplying a band-like sheet to a processing apparatus generally includes a guide roll. Are arranged in parallel to each other, and are formed in a straight line with the conveying direction along the longitudinal direction of the sheet.

[0003] In order to pass a sheet through such a sheet conveying path, conventionally, the leading end of the belt-shaped sheet is guided and guided using a roller chain wound along the sheet conveying path. In such a conventional thing,
Since the sheet conveying path is linear and the roller chain can be circulated in the same plane, the pulling force on the belt-like sheet is constant, and stable feeding can be achieved without displacing the chain.

However, in the sheet conveying path,
Occasionally, it is necessary to bend the sheet in the width direction of the sheet and change the direction to avoid obstacles.In such a case, the chain may be twisted and the pulling force may be reduced. The non-uniformity causes the chain to come off, making it difficult to automate sheet threading. In addition, this limits the formation of the sheet conveying path, which greatly impairs the degree of freedom in plant arrangement.

Accordingly, the present invention provides a sheet conveying path having a direction changing portion in which the conveying direction is bent in the width direction of the sheet, and the leading end of the band-shaped sheet can be automatically guided along the sheet conveying path to pass the sheet. It is an object of the present invention to provide a sheet feeding device capable of improving sheet conveyance efficiency and increasing a degree of freedom in plant arrangement.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a guide for guiding the end of a long strip-shaped sheet and bending the strip in the width direction so that the center lines of the strips intersect. A sheet feeding device mounted on a sheet conveying path having a bent portion, wherein the sheet conveying path includes a bending roller which can equally divide an angle formed by an axis center line of the belt-shaped sheet in the bent portion. The sheet feeding device is configured to be guided by a plurality of guide wheels and to be close to the sheet conveying path and to have one side edge in the width direction of the band-shaped sheet .
One link and the other are alternately connected in a cross shape
Use a torsionable link chain consisting of one side link
An endless continuous string, a tensioning fixture fixed to the link on the other side of the endless continuous string, protruding toward the band-shaped sheet, and attaching the leading end of the band-shaped sheet, and extending between the guide vehicles along the sheet conveying path and the endless string. A guide that prevents the string from being removed from the guide wheel by being inserted, and at least one or more motors that drive the endless string ;
And the guide sandwiches both side surfaces of the link on the other side
Groove to keep the orientation of the tensioning
Each link has a notch to guide through the link
It is characterized in that the trajectory and attitude are restricted.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a sheet feeding device 1.
FIG. 2 is a plan view schematically showing the sheet conveying path 3 together with the sheet feeding device 1. The sheet feeding device 1 is configured to bend a long band-shaped sheet S in a width direction so as to intersect an axial center line N of the band-shaped sheet S. 2, which is mounted on the sheet conveying path 3 where the conveying direction F changes direction at the bent portion 2, guides the leading end of the band-shaped sheet S along the sheet conveying path 3, and performs sheet passing.

The sheet conveying path 3 is, for example, a roll 4
A feeding path for feeding the belt-shaped sheet S unwound from the roll body 4 to the processing device. In this example, a first feeding path section 5 extending forward from the roll body 4 and the first feeding path section 5
And a third conveying path section 7 that is bent from the second conveying path section in the width direction of the sheet, and a third conveying path section 7 that changes direction from the second conveying path section 6 and faces forward. An obstacle W arranged in front is avoided.

Guide rollers 9, 10, 11 perpendicular to the transport direction in each of the transport path units 5, 6, 7 are pivotally attached to the transport path units 5, 6, 7, respectively. To guide the belt-shaped sheet S. In addition, the bent portion 2A between the first and second transport path portions 5 and 6 and the bent portion 2 between the second and third transport path portions 6 and 7
B represents an angle θ formed by the axis center line N (90 in this example).
°) are provided diagonally.

More specifically, as shown in FIGS. 2 to 4, a pair of upper and lower guide rolls 9A and 9B for guiding the belt-shaped sheet S unwound from the roll body 4, for example, are provided in the first transport path section 5. The guide rollers 10 </ b> A, 10 </ b> B, 10 </ b> C
The guide rolls 11A, 11B, and 11C are sequentially arranged toward the downstream side in the transport direction. As shown in FIG. 1, the belt-shaped sheet S is guided while passing alternately up and down through guide rolls arranged in the downstream direction in the transport direction, thereby uniformly applying tension to the sheet, and after passing the sheet, the belt-shaped sheet S It suppresses sheet slack when S is continuously supplied to the processing device. The belt-shaped sheet S is wound from top to bottom on the upstream folding roller 12A, and from bottom to top on the downstream folding roller 12B, and the transport direction is changed by approximately 90 ° in this example.

On the other hand, as shown in FIG. 5, the sheet feeding device 1 includes a twistable endless continuous cord 19 guided by a plurality of guide wheels 13 and extending on one side edge of the belt-shaped sheet 3. A tension member 20 for attaching the belt-shaped sheet that is fixed and protrudes to the belt-shaped sheet S side, and a guide 21 for preventing the endless continuous cord 19 extending between the guide wheels 13 from coming off (FIG.
8 and 10) and one or more, in this example, two motors M1 and M2 for driving the endless string 19.
Note that FIG. 5 merely shows a part of the movement of the leading edge SE of the belt-shaped sheet S based on the rotation of the endless continuous cord 19 in an exaggerated and photographed manner. It does not mean that.

The guide wheels 13 include guide wheels 13A arranged along the first transport path 5, guide wheels 13B arranged along the second transport path 6, and a third transport path. Guide wheels 13C arranged along the section 7 and the guide wheel 1 for return
3D ...

Among the guide wheels 13A, the guide wheel 13A1 on the most downstream side in the transport direction is disposed at a position slightly beyond the folding roller 12A in the forward direction.
The guide wheels 13B1 on the most upstream side in the transport direction among the guide wheels 13B1 are provided below the guide wheels 13A1.
The bending roller 12A is disposed at a height intermediate position between 3A1 and 13B1. The axes of the guide wheels 13A1 and 13B1 are substantially orthogonal to each other, so that the endless continuous cord 19 orbits the front surface of the bending roller 12A from top to bottom while having a twist of about 90 °.

[0014] Note also the bent portion 2B of the downstream guide wheels 13B ... conveyance direction downstream side of the guide wheels of the 13B2
And the guide wheel 13C1 on the most upstream side in the transport direction among the guide wheels 13C are provided in the same manner.
Circling around the bending roller 12B while having a twist of .degree.

Here, a link chain which is twistable and has excellent tensile strength can be preferably used as the endless continuous cord 19, and the guide wheel 13 is connected alternately in a cross shape as shown in FIG. A pulley provided with an arc-shaped groove for receiving the parallel portion of the link 19A on one side of the link is used.

As shown in FIGS. 10 and 12, the tension fitting 20 has a plate-like shape fixed by welding or the like to a parallel portion of the link 19B on the other side of the endless continuous cord 19, and has a band-like shape at its tip. The mounting hole 20A for mounting the leading end of the sheet S is
For example, it is formed to have a cutout portion opened on one side of the tension fitting 20.

Note that, for example, when the belt-shaped sheet S has a certain degree of stiffness, the pulling fitting 20 is shown in FIG.
As shown in FIG. 2, the front end SE of the belt-shaped sheet S can be guided by the strength of the waist, by binding the corners at the front ends thereof and attaching them to the mounting holes 20A.
On the other hand, when the strength of the waist is relatively weak,
A loop portion S1 provided with a tension shaft 30 which is removably fitted to A and provided at the tip of the band-shaped sheet S.
, The belt-shaped sheet S is attached. The tension shaft 30 extends substantially at right angles to the running line of the endless continuous cord 19 and is inserted over substantially the entire width of the belt-shaped sheet S.

A guide 21 is a guide for preventing the endless connecting cord 19 from coming off the guide wheel 13.
As shown in FIG. 2, in this example, a groove 22 through which the base 20A passes is provided on the side surface of the base 21 having a substantially rectangular cross section, and the groove 22 is formed by sandwiching both side surfaces of the link 19B on both edges thereof. Guide wall 2 for maintaining the orientation of the tension fitting 20
3 and 23 are provided. In addition, by passing one link 19A through each guide wall 23, this link 19
A notch 44 for guiding A is provided. Therefore, the guide 21 is configured such that the endless continuous cord 19 is inserted between the guide walls 23 and the cutouts 44, whereby the links 19A, 1
Constrain the trajectory and attitude of 9B. Therefore, this guide 2
By providing 1 between the guide wheels 13 along the sheet conveying path 3, the endless continuous cord 19 can be prevented from coming off the guide wheel 13.

FIG. 7 shows an example of the arrangement of the guides 21 provided on the first transport path section 5 side. As shown in the figure, the guide 21 is disposed between the guide wheels 13A,
As shown in the enlarged view of FIG. 8, both ends of the guide 21 close to A have a tapered shape in which the width of the groove 22 is gradually increased toward the outside, so that delivery to and from the guide wheel 13 is facilitated. Similarly, guides 21 are also provided on the second and third transport path portions 6 and 7.
Is arranged.

As shown in FIGS. 5 and 6, the endless continuous cord 19 guided by the guide 21 orbits as shown in FIG.
The tension fitting 20 can guide and guide the leading end of the belt-shaped sheet S along the sheet conveying path 3 while applying a twist at the bent portions 2A and 2B.

In this embodiment, as shown in FIG. 2, the guide wheel 13A1 and a guide wheel on the upstream side thereof are used to reduce wrinkling of the belt-like sheet S caused by folding at the bent portions 2A and 2B. And the running line L1 of the endless continuous string 19 between the guide wheel 13B1 and the guide wheel on the downstream side of the running line L2 is inclined outward in the width direction. The running line L3 of the endless connecting cord 19 between the guide wheel 13B2 and the guide wheel on the upstream side is tilted inward in the width direction, and the guide wheel 13C1 and the guide wheel on the downstream side are inclined. The running line L4 of the endless continuous cord 19 is inclined outward in the width direction.

In addition, since the torsion at the bent portions 2A and 2B increases the load torque applied to the 19 turns of the endless continuous cord, one or more, preferably two or more motors are required.
The motors M1 and M having the same speed are provided at a position on the substantially upstream side of the transport path unit 5 and a position on the almost downstream side of the third transport path unit 7, respectively.
2 are provided.

FIG. 11 shows another example of the tension shaft 30. In this example, the tension shaft 30 is connected to the bending roller 12.
The belt-shaped sheet S is attached at an angle of about 45 ° with respect to the axial center line N of the belt-shaped sheet S in accordance with the inclination. Thereby, the bending portion 2
The wrinkles of the belt-shaped sheet S caused by the folding at A and 2B are reduced, and the inclined arrangement on the traveling lines L1 to L4 is eliminated.

The angle θ of the bent portion 2 can be set to any angle other than 90 °, and the endless connecting cord 19 can use various ones as long as it can be twisted. Can be modified into various modes.

[0025]

Since the present invention is configured as described above,
In a sheet conveyance path having a direction change portion in which the conveyance direction is bent in the width direction of the sheet, the leading end of the band-shaped sheet can be automatically guided along the sheet conveyance path to pass the sheet,
The sheet transport efficiency can be improved, and the degree of freedom in plant arrangement can be increased.

[Brief description of the drawings]

FIG. 1 is a schematic plan view illustrating a sheet conveying path.

FIG. 2 is a schematic plan view showing an example of an embodiment of the present invention.

FIG. 3 is a side view thereof.

FIG. 4 is a front view thereof.

FIG. 5 is a perspective view showing a winding state of an endless continuous string together with a guide wheel.

FIG. 6 is a schematic plan view showing the guide for guiding the leading end of the belt-like sheet by a pulling fitting.

FIG. 7 is a side view of the apparatus showing an example of the arrangement of guides.

FIG. 8 is an enlarged plan view showing a positional relationship between a guide and a guide vehicle.

FIG. 9 is a cross section showing a guide wheel.

FIG. 10 is a perspective view showing a state where an endless continuous cord is inserted into a guide.

FIG. 11 is a schematic plan view showing another embodiment of the tension shaft fitting.

FIG. 12 is a perspective view showing another example of a state in which the tension fitting and the belt-shaped sheet are attached.

[Explanation of symbols]

 2, 2A, 2B Bending portion 3 Sheet transport path 12, 12A, 12B Bending roller 13, 13A, 13B, 13C, 13D Guide wheel 19 Endless continuous cord 20 Pulling fixture 21 Guide 22 Groove M1, M2 Motor N Belt sheet shaft Center line S belt-shaped sheet

Claims (1)

(57) [Claims] 1. A sheet feeding device mounted on a sheet conveying path having a bent portion where an axial center line of a strip-shaped sheet intersects by guiding and guiding a leading end of a long strip-shaped sheet and bending the strip-shaped sheet in a width direction. In addition, the sheet conveying path includes, at the bent portion, a folding roller that can equally divide the angle formed by the axis of the belt-shaped sheet, and the sheet feeding device is guided by a plurality of guide wheels; Approximately to the above-mentioned sheet transport path, it extends on one side edge side of the width direction of the belt-shaped sheet and has a cross shape
Links on one side and links on the other side that are connected alternately
An endless continuous cord with Ranaru torsion possible link chain, and pulling bracket mounting the projecting strip sheet side and the tip of the belt-like sheet is fixed to the other side of the link of the endless continuous cord, the sheet conveying path A guide that extends between the guide cars and prevents the endless string from being disengaged by inserting the endless string, and at least one or more motors that drive the endless string , and the guide is Sandwich both sides of the link on the other side
Groove to keep the orientation of the tensioning
Each link has a notch to guide through the link
A sheet feeding device for restricting a trajectory and a posture .