JPH11188777A - Electrostatic pinning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrostatic pinning device which is capable of effectively suppressing the vibration of an electrostatic wire and improving the treating efficiency by constantly feeding the new part of the wire in the continuous mode or feeding it at a time interval in the intermittent mode and also easily dealing with a change in the width of a sheet to be treated. SOLUTION: An electrostatic wire 1 is tensely spread between a feed unit 3 and a take-up unit 4 and is taken up by the take-up unit 4 while being fed by the feed unit 3. In addition, a protecting pipe 10 through which the wire 1 runs, guided by the pipe 10 is arranged on the feed unit 3 side and the take-up unit 4 side respectively. Further, these protecting pipes 10 are mounted on their respective protecting pipe holders 9 in such a way that the pipes 10 are positionally adjustable in the axial line direction of the wire 1 and freely detachable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrostatic pinning apparatus for charging and solidifying a resin sheet (including a film) formed by melt-extrusion molding with a charging wire and contacting the same with a cooling body in order to cool and solidify the resin sheet.

[0002]

2. Description of the Related Art An electrostatic pinning device of this kind is disclosed in
As described in Japanese Unexamined Patent Publication No. 2-52697, there is a problem that the uniformity of quality is impaired due to vibration of the charging wire. In the method disclosed in the publication, both ends located outside the film width of the charging wire. In addition, a floating member having a mass per unit length of 50 to 500 times that of the charging wire and movable by the vibration of the charging wire is provided to absorb the vibration of the charging wire.

[0003]

However, in this case, there is a problem that another vibration is caused by the floating of the floating member. Also,
Charging wires are subject to severe deterioration and adhesion of dirt, and if they are not updated constantly or regularly, the processing efficiency will decrease.Therefore, instead of fixing both ends of the charging wire, unwind and wind up at the same time to make a new part. Is desirably continuously or intermittently fed at a certain time interval. However, such a method cannot be achieved by a method in which floating members are provided at both ends of the charging wire. Further, it is difficult to cope with a case where the film width (sheet width) to be processed is changed.

An object of the present invention is to eliminate such a problem.
That is, in addition to having a good effect of suppressing vibration of the charging wire, a new portion of the charging wire can be constantly and intermittently fed out at a certain time interval to improve processing efficiency,
Another object of the present invention is to provide an electrostatic pinning device that can easily cope with a change in the width of a sheet to be processed.

[0005]

In the electrostatic pinning device according to the present invention, the charging wire is stretched between the feeding unit and the winding unit, and is wound by the winding unit while being fed by the feeding unit. In addition, protective tubes for guiding the charging wires through are arranged on each of the feeding unit side and the winding unit side, and these protective tubes are mounted on the respective protective tube holders so as to be adjustable in the axial direction of the charging wires. And

According to such an electrostatic pinning device, a new portion of the charged wire can be constantly or intermittently fed out at a certain time interval while suppressing the vibration of the charged wire by the protection tube, and the protection can be performed. By adjusting the position of the tube, it is possible to easily cope with a change in the sheet width.

When the protection tube is detachably mounted on the protection tube holder, the charging wire can be easily penetrated through the protection tube when the charging wire is stretched between the feeding unit and the winding unit.

When a rack is provided on the protection tube side and a pinion is provided on the protection tube holder side, and the pinion is rotated to adjust the position of the protection tube, the adjustment structure can be simplified.

If the feeding unit and the winding unit are each supported by a lift mechanism and the height can be adjusted, the distance between the charging wires with respect to a cooling body such as a cooling roller can be adjusted.

A take-up reel for taking up the charging wire, a take-up motor for rotating the take-up reel, a voltage application roller for applying a high voltage while guiding the charging wire, and a take-up reel A winding guide roller for guiding the charging wire, a gear for reducing the rotation of the winding motor, and a conversion of the rotation of the gear into a linear reciprocating motion, and an axis parallel to the axis of the winding reel. And a crank mechanism for reciprocating the winding wire, the winding wire can be wound up on the winding reel, and the winding point can be gradually shifted in the axial direction of the winding reel to perform the winding orderly.

When the winding unit is provided with a length measuring means for detecting the length of the charging wire while guiding the charging wire, the winding length of the charging wire can be accurately controlled.

A feeding reel for feeding the charging wire to the feeding unit; a stepping motor for feeding the feeding reel; tension detecting means for detecting the tension while guiding the charging wire fed from the feeding reel; and a feeding reel. And a voltage application roller for applying a high voltage while guiding the charging wire fed from the printer. When the charging wire is cut or loosened, the feeding motor can be controlled to control the feeding motor and the feeding can be interrupted. Can be easily performed.

[0013]

Next, embodiments of the present invention will be described in detail with reference to the drawings.

As shown in FIGS. 1 and 2, this electrostatic pinning device comprises a feeding unit 3 for feeding a charging wire 1 which is a metal wire such as tungsten so as to be parallel to a cooling body 2.
The traveling resin sheet 5 is contacted with the cooling body 2 by static electricity by applying a high voltage to the charging wire 1 between the feeding unit 3 and the winding unit 4 between the feeding unit 3 and the winding unit 4. The winding unit 4 can automatically wind up a new portion of the charging wire 1 while automatically feeding out a new portion of the charging wire 1 from the feeding unit 3. In this example, the cooling body 2 is a rectangular cylinder that does not rotate as shown in FIG.
It is horizontally supported on the upper part,
As disclosed in Japanese Patent Application Laid-Open No. 7-No. 7, the roll is usually a rotating roll.

The unwinding unit 3 and the winding unit 4 are separate units each having parts incorporated in a frame 6 having a similar shape. The unwinding unit 3 and the winding unit 4 are mounted on a base 8 by a lift mechanism (lage tong) 7 and cooled. The height (interval) with respect to the body 2 can be adjusted.

In each of the frames 6 of the feeding unit 3 and the winding unit 4, a protection tube holder 9 having a rectangular tube shape is provided so as to be opposed to each other between the feeding unit 3 and the winding unit 4. An electrically insulating protection tube 10 that guides the charging wire 1 through the protection tube holder 9 is fitted in the protection tube holder 9 so as to be slidable in the axial direction of the charging wire 1.

As shown in FIGS. 4 to 7, the side of the feeding unit 3 and the side of the winding unit 4 in FIGS.
0 is a square tube portion 10a having a circular inner peripheral surface and a rectangular outer peripheral surface.
And both the inner and outer peripheral surfaces are composed of circular circular tube portions 10b.
Then, the rectangular tube portion 10a is inserted into the protective tube holder 9 so that it can slide freely in the axial direction but cannot rotate, and the rack 10 formed on the upper surface of the rectangular tube portion 10a is formed.
c is engaged with the pinion 11 supported by the protection tube holder 9 in the protection tube holder 9. Thereby, each protection tube 10 can be advanced or retracted by rotating the pinion 11 from the outside of the protection tube holder 9 by the operating rod 12, and the position can be adjusted according to the width of the resin sheet 5. At the same time, it is detachable from the protection tube holder 9 (removable).

Therefore, the protection tubes 10 on the feeding unit 3 side and the winding unit 4 side guide the charging wire 1 through and suppress the vibration. The length of the protection tube 10 protruding from the protection tube holder 9 can be adjusted according to the width of the resin sheet 5 to be processed, so that the protection tube 10 can be charged by the effective width of the resin sheet 5. When the charging wire 1 is wound between the feeding unit 3 and the winding unit 4, the charging wire 1 is connected to the protective tube 1.
However, since the protection tube 10 is detachable from the protection tube holder 9, the insertion operation can be easily performed by removing the protection tube 10 from the protection tube holder 9.

The feeding unit 3 and the winding unit 4 have the same configuration as described above, but a unique structure will be described from the feeding unit 3.

As shown in FIGS. 1, 4 and 8, the feeding unit 3 includes a feeding reel 13, three tension rollers 14, a guide roller 15, a tension detecting roller 16, and a voltage applying roller 17 on a frame 6. In order to accurately pay out the charged wire 1 attached and wound on the payout reel 13,
The reel 13 is rotated by a stepping motor 18.

The three tension rollers 14 guide the charging wire 1 fed from the feeding reel 13 while
A tension is applied by a tension applying mechanism 19 as shown in FIG. The tension applying mechanism 19 has upper and lower two guide rods 21 laid in parallel on a frame 20 fixed to the frame 6, and a slider 22 is slidably mounted on these guide rods 21. Each guide rod 21 is urged in one direction by a coil spring 23 wound around the guide rod 21, and a base plate 24 is pivotally supported by a slider 22 so as to be rotatable.
4 is pivotally supported so as to be located at the apex of the triangle.

As shown in FIG. 4, the tension detecting roller 16 is supported by a detector 25a of the tension sensor 25. The charging wire 1 is detected by the tension sensor 25.
By detecting the tension, the feeding can be interrupted by controlling the stepping motor 18, which is the feeding motor, when the charging wire 1 is cut or loosened. The voltage applying roller 17 is connected to a high voltage power supply by a high voltage cable (not shown), and a high voltage is applied to the charging wire 1 via the voltage applying roller 17. The charging wire 1 guided by the voltage applying roller 17 penetrates through the protective tube 10 on the feeding unit 3 side, and the winding unit 4
Transferred to

Next, as shown in FIGS. 1, 8, 9 and 10, the winding unit 4 is connected to the winding reel 26 and the charging wire 1 passing through the protection tube 10 on the winding unit 4 side. , A voltage applying roller 28 for applying a high voltage, a length measuring roller 29 for detecting the length of the charging wire 1 while guiding the charging wire 1, and guiding the charging wire 30 to the take-up reel 26. The take-up reel 30 is mounted on the frame 6 and the take-up reel 30 is
The rotation of the deceleration mechanism 32 causes the charging wire 1 to be wound up.

The voltage applying roller 28 is connected to a high voltage power supply by a high voltage cable (not shown), and applies a high voltage together with the voltage applying roller 17 on the feeding unit 3 side while guiding the charging wire 1. The rotation of the length measuring roller 29 is detected as a winding length of the charging wire 1 by a length measuring sensor (not shown), and depending on the detected length, a torque motor 31 serving as a winding motor or a feeding motor is used. A certain stepping motor 18 can be controlled.

The rotation of the torque motor 31 depends on the winding rule 2
At the same time, the speed is reduced by the speed reduction mechanism 32 and then converted into a linear reciprocating motion by the crank mechanism 33 and transmitted to the winding guide roller 30. The structure will be described with reference to FIGS.

The rotation of the torque motor 31 is controlled by a small gear 34.
After being decelerated by the rotation while meshing with the large gear 35, the rotation axis is changed to a right angle by the rotation while meshing with the worm 36 and the worm wheel 37,
Further, the crank 38 converts the linear reciprocating motion to a plate-like slider 39 and transmits the linear reciprocating motion. This slider 39 corresponds to FIG.
As shown in FIGS. 3 and 14, the guide frame 40 is slidably fitted to the guide frame 40, and has a vertically long groove 40 a that is slidably fitted to the tip roller 38 a of the crank 38. The take-up guide roller 30 is provided with an end block 4 of an arm 41 protruding from the slider 39.
2, the axis of which is parallel to the axis of the take-up reel 26.

Therefore, when the take-up reel 26 is rotated by the torque motor 31, the take-up guide roller 30 guides the charging wire 1 to the take-up reel 26 as shown in FIGS. On the other hand, the charging wire 1 is slowly reciprocated back and forth while being parallel,
6, and the winding outer diameter does not have any partial unevenness.

[0028]

As described above, according to the present invention, the charging wire is guided through the protection tube on each of the feeding unit for feeding the charging wire and the winding unit for winding the charging wire. In addition to having a good suppression effect, a new portion of the charged wire can be constantly or intermittently fed out at certain time intervals to improve the processing efficiency. Further, since the position of the protective tube can be adjusted in the axial direction of the charging wire, it is possible to easily cope with a change in the sheet width to be processed.

According to the second aspect of the present invention, since the protection tube is detachably mounted on the protection tube holder, when the charging wire is stretched between the feeding unit and the winding unit, the charging wire is connected to the protection tube. Can be easily penetrated.

According to the third aspect of the present invention, the rack is provided on the protection tube side, and the pinion is provided on the protection tube holder side, and the position of the protection tube can be adjusted by rotating the pinion. Can be simplified.

According to the fourth aspect of the present invention, since the feeding unit and the winding unit are supported by the lift mechanism and the height can be adjusted, the distance between the charging wires with respect to a cooling body such as a cooling roller can be adjusted. .

According to the fifth aspect of the present invention, on the winding unit side, while winding the charging wire on the winding reel, the winding point is gradually shifted in the axial direction of the winding reel, so that the winding is orderly. It can be carried out.

According to the invention of claim 6, since the winding unit is provided with the length measuring means for detecting the length of the charging wire while guiding it, the winding length of the charging wire can be accurately controlled.

According to the seventh aspect of the invention, the tension of the charging wire is detected on the feeding unit side.
When the charged wire is cut or loosened, the feeding motor can be controlled to stop feeding.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of an example of an electrostatic pinning device according to the present invention.

FIG. 2 is a front view of the electrostatic pinning device.

FIG. 3 is a cross-sectional view showing a support structure of a cooling body in the electrostatic pinning device.

FIG. 4 is a partially cutaway front view of a feeding unit in the electrostatic pinning device.

FIG. 5 is a plan view of the same.

FIG. 6 is a longitudinal sectional view of the same.

FIG. 7 is a perspective view of a tension mechanism that applies tension to a charging wire by three tension rollers in the feeding unit.

FIG. 8 is a front view of the winding unit.

FIG. 9 is a plan view of the same.

FIG. 10 is a transverse sectional view of the same.

FIG. 11 is a longitudinal sectional view of the same.

FIG. 12 is a sectional view of a speed reduction mechanism and a crank mechanism in the winding unit.

FIG. 13 is a perspective view of a part of a speed reduction mechanism and a crank mechanism.

FIG. 14 is a perspective view of a state in which a winding guide roller has been advanced from FIG.

FIG. 15 is a plan view showing a reciprocating motion of a winding guide roller with respect to a winding reel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Charging wire 2 Cooling body 3 Feeding unit 4 Winding unit 5 Resin sheet 9 Protection tube holder 10 Protection tube 10c Rack 11 Pinion 13 Feeding reel 14 Tension roller 15 Guide roller 16 Tension detection roller 17 Voltage application roller 18 Stepping motor (stepping motor) Motor) 19 tension applying mechanism 26 take-up reel 27 guide roller 28 voltage applying roller 29 length measuring roller 30 take-up guide roller 31 take-up motor (torque motor) 32 reduction mechanism 33 crank mechanism 34 small gear 35 large gear

Claims (7)

[Claims] 1. An electrostatic device in which a charging wire to which a high voltage is applied is stretched in parallel with a cooling body such as a cooling roll, and a resin sheet formed by melt extrusion is charged by the charging wire and brought into contact with the cooling body. In the pinning device, the charging wire is stretched between the feeding unit and the winding unit, and is wound by the winding unit while being fed by the feeding unit. An electrostatic pinning device comprising: a protection tube for guiding a charging wire therethrough; and a protection tube mounted on each of the protection tube holders so that the position of the protection tube can be adjusted in the axial direction of the charging wire. 2. The electrostatic pinning device according to claim 1, wherein the protection tube is detachably mounted on the protection tube holder. 3. The electrostatic device according to claim 1, wherein a rack is provided on the side of the protection tube, and a pinion is provided on the side of the protection tube holder, and the position of the protection tube can be adjusted by rotating the pinion. Pinning device. 4. The electrostatic pinning device according to claim 1, wherein the feeding unit and the winding unit are respectively supported by a lift mechanism so that the height can be adjusted. 5. A winding unit, comprising: a winding reel for winding a charging wire; a winding motor for rotating the winding reel; a voltage applying roller for applying a high voltage while guiding the charging wire; A winding guide roller for guiding the charging wire to the winding reel, a gear for reducing the rotation of the winding motor, and converting the rotation of the gear into a linear reciprocating motion; 5. The electrostatic pinning device according to claim 1, further comprising a crank mechanism configured to reciprocate along an axis parallel to the axis. 6. The winding unit according to claim 1, further comprising a length measuring means for detecting a length of the charging wire while guiding the charging wire to control the winding motor.
6. The electrostatic pinning device according to 3, 4, or 5. 7. A feeding unit for feeding a charging wire, a feeding stepping motor for rotating the feeding reel, and tension detecting means for detecting the tension of the charging wire fed from the feeding reel while guiding the charging wire. 7. The electrostatic pinning device according to claim 1, further comprising a voltage applying roller for applying a high voltage while guiding the charging wire.