JP5421036B2 - Corona treatment device - Google Patents

Description

  The present invention relates to a corona in which the surface of a sheet material such as a film or sheet guided on a roll is chemically and physically modified by high-frequency and high-voltage corona discharge irradiation to improve printability and laminating properties. More particularly, the present invention relates to a novel improvement for reducing the size of the apparatus by efficiently discharging harmful gases generated during corona discharge through a duct.

As this type of corona treatment apparatus conventionally used, for example, the configuration disclosed in Patent Document 1 can be cited as an example, but it is used in the corona discharge apparatus shown in this Patent Document. As a specific configuration of the corona treatment apparatus, the configuration shown in FIGS. 15 and 16 is adopted.
That is, in FIG. 15, what is indicated by reference numeral 1 is a pair of horizontally elongated beams disposed apart from each other, and a pair of beams 1 is attached to both ends of each beam 1 via a pair of beam receivers 1A. A longitudinal frame 2 is provided.

  An earth roll 5 is rotatably provided at a lower position of each frame 2 via a support shaft 4. A swivel support shaft 8 is provided below the pair of supports 6 provided at both ends of the beam 1. A horizontally long main body box 9 is provided so as to be rotatable.

  The other end 10b of each swivel device 10 whose one end 10a is pivotally supported by each support 6 is connected to the swivel support shaft 8 via a pair of links 12, and the main body box is expanded and contracted by each swivel device 10. It is comprised so that 9 can turn.

A bendable duct 16 is connected to the outer peripheral surface 9a at the center position in the longitudinal direction of the main body box 9 through a flange 14 and a duct band 15, and a suction operation for harmful gas or the like can be performed by the duct 16. It is configured as follows.
On the lower surface 9 b of the main body box 9, a longitudinal electrode 19 provided in the cover 22 via a plurality of insulating insulators 17 and an electrode holder 18 is disposed, and a gap between the electrode 19 and the earth roll 5 is disposed. D is set to about 2 to 4 mm, and the surface of the sheet 20 can be modified by generating a high-frequency AC high voltage to generate corona discharge with the earth roll 5. It is configured.
An electrode station 21 is formed by the main body box 9, the electrode 19, the cover 22, and the turning support shaft 8.

In the above-described configuration, the case where the electrode 19 is swung to the operating position A and the retracted position B with respect to the ground roll 5 as shown in FIG. 16 will be described.
First, as shown in FIG. 16, by operating the swivel device 10 via a control device (not shown), the electrode station 21 corona discharges with respect to the sheet 20 at a corona discharge operation position A indicated by a solid line, After the discharging process, the electrode station 21 is turned to the retracted position B indicated by the dotted line via each turning device 10, so that each electrode 19 is separated from the earth roll 5 and becomes non-operating.

  In the above case, when the duct 16 connected to the main body box 9 is located at the operating position A, harmful gas generated by corona discharge is exhausted to the outside through the duct 16, but the electrode station In accordance with the turning of the duct 21, the duct 16 is bent as shown by a dotted line with a deflection.

JP-A-6-136158

Since the conventional corona treatment apparatus is configured as described above, the following problems exist.
(1) Since the duct is only directly fixedly connected to the main body box, when the electrode station is released, as shown in FIG. 16, the duct bends greatly and interferes with other electrode stations and parts. It was a cause of failure.
(2) For example, when the inner diameter of the duct is 250 mm, the position of the duct length of about 1 m changes due to the opening operation, and is about 3 times the duct diameter (750 mm) in the horizontal direction as in the duct retraction position of FIG. In this case, a large number of electrode stations cannot be arranged. In order to arrange a large number of electrode stations, a roll having a larger diameter is required, which is an obstacle to downsizing of the apparatus.
(3) Also, as the duct moves greatly as described above, dust on the outer surface of the duct, dust, duct contact wear powder, etc. may fall on the precise and clean upper surface of the sheet, which may contaminate the product sheet. .
(4) Further, when the length of the main body box of the apparatus becomes as large as 8 m, the self-weight flaw increases, and the maximum wrinkle is 100% as shown in FIG.
(5) In addition, the gap between the electrode and the roll cannot be kept constant due to vibration during operation or a temperature change caused by corona discharge, resulting in uneven discharge.
(6) In addition, the main body box has a large cross section to reduce wrinkles.
(7) In addition, the avoidance operation of the electrode station including the electrode and cover at the time of power failure or when the air pressure is stopped is not obtained, and it is difficult to provide a safety means for preventing the sheet material from being caught.

A corona treatment device according to the present invention includes a pair of frames provided at both ends of a horizontally long beam, an earth roll rotatably provided between the frames, and a support base below the beam via a swivel device. has a one or more electrodes stations, the number of holes being connected to said pivoting device for constituting a part of the electrode station with the cover of the horizontal length shape forming a pivotally disposed et Re U-shaped cross section Te a body housing which is horizontally long shape, and the longitudinal direction of the central or duct connected to the gas discharge hole located at one end of the body box, provided through the cover to the lower surface of the main box insulation with and a horizontally long shape of the electrodes connected to the insulator, at least generates perform corona discharge through the front Symbol electrode to sheet about to wound the ground roll Through the pre-Symbol duct harm gas from the respective hole of the main box so as to exhaust to the outside, the elbow provided in the gas discharge holes of the side surface of the main box, duct pivot connected to said elbow and the joint, in Dakutoerubo and, wherein the duct swivel the duct directly or through a connecting tube body is connected to Turkey corona treatment equipment provided between said duct swivel duct, the one 致又 the axis and the elbow axis of the elbow of the pivot member of the pivot device is configured as a non-match, also said electrodes, said main box through the electrode holder及beauty the insulation insulator is connected to the outer surface, the electrode, the electrode holder and the insulation insulator is surrounded by the cover that will covering at least tetrahedron, the pivot member having parallel axis in the longitudinal direction of the main box, In the vicinity of the outer surface of serial main box, and a plurality arranged along the longitudinal direction together through the support provided via the variable positioning means with respect to support base provided on the lower surface of the beam, and the main box the electrodes cover the pivot member to form the electrode station, the support is the support stand have Rutotomoni the pivoting device is provided on the lower surface is provided on the support, the support in the vertical direction by the variable positioning means By being configured so that the height can be adjusted along, the gap between the electrode and the surface of the earth roll is variable, and the swiveling device is a retractable mechanical or fluid type. A mechanical or fluid balancer having a biasing force in one direction between the support and the pivot support shaft. And the balancer corrects the self-weight unbalance rotational moment of the electrode station including the main body box around the pivot support shaft, and the balancer applies a preset set load to the balancer. It is configured to have a function of a safety opening device for moving the entire electrode station to a retracted position separated from the earth roll at a time of power failure and when the air source pressure is reduced.

Since the corona treatment apparatus according to the present invention is configured as described above, the following effects can be obtained.
(1) Since the large duct is not swung around, the installation area of the electrode station is small, and it is easy to downsize.
(2) Since the installation area of the duct is reduced, many electrode stations and electrodes can be arranged on the earth roll.
(3) Since the main body box can be supported at multiple points even in a large corona treatment apparatus having a sheet width of 8 m or more, as shown in FIG. 14, the strength of the body can be reduced, and the main body box can be reduced in size and weight.
(4) Even when a large corona treatment device with a large sheet width is supported by two supports, the span of the support can be reduced and the deflection of the main body box can be reduced.
(5) Even with a corona treatment device with a wide sheet width, the main body box is small, so even if there is vibration or temperature change, there is little change in the gap between the electrodes and rolls, the corona generation distribution is uniform, and the surface modification treatment is uneven. High-precision processing with a small amount of
(6) Since the self-weight unbalance at the center of the pivot support shaft of the electrode station including the main body box can be canceled by the balancer, the swing drive device can be reduced in size.
(7) The electrode automatically retracts and clears when there is an abnormality such as a power outage or air pressure down, preventing accidents involving seats and a safe device.
(8) Since there is a butterfly plate on the longitudinal cover 7 of the electrode station, the cover can be easily opened and the electrode section can be easily maintained.
(9) Since the duct is not swung, the generation of dust, dust and wear powder is reduced, and the product sheet can be prevented from being contaminated.

It is a front schematic block diagram which shows the corona discharge apparatus by this invention. It is an arrow A view seen from the drive side of FIG. FIG. 3 is a configuration diagram of a revolving turning of FIG. 2. It is a block diagram which shows the other form of FIG. FIG. 5 is an arrow A view as viewed from the drive side in FIG. 4. It is a front view which shows the principal part of FIG. It is sectional drawing of FIG. It is an expansion detailed block diagram which shows the principal part of FIG. It is a right view of FIG. It is an expansion detailed block diagram which shows the principal part of FIG. It is a right view of FIG. FIG. 2 is an enlarged detail view showing a main part of FIG. 1. It is a right view of FIG. It is a characteristic view which shows the dead weight of the main body box of FIG. It is a front view which shows the conventional corona discharge apparatus. It is arrow A figure of FIG. It is a characteristic view which shows the dead weight of the main body box of FIG.

  An object of the present invention is to provide a corona discharge device that efficiently discharges harmful gases and the like generated during corona discharge through a duct to reduce the size of the device.

Hereinafter, preferred embodiments of a corona treatment apparatus according to the present invention will be described with reference to the drawings.
In addition, the same code | symbol is used for the same or equivalent part as a prior art example, and is demonstrated.
In FIG. 1, what is indicated by reference numeral 1 is a pair of horizontally long beams (shown in FIG. 2) that are spaced apart from each other. A pair of longitudinal frames 2, 2 are provided via the.

An earth roll 5 that is in contact with the touch roll 5A via the support shaft 4 is rotatably provided at the lower position of each of the frames 2 and 2, and this earth roll 5 has a rubber-coated structure and is to be processed. The sheet 20 is wound around the upper surface and is rotated by a motor 30.
At both ends of the ground roll 5, ground brushes 31 and 32 supported by the frames 2 and 2 are provided so as to be in sliding contact with each other, and are configured to be grounded to the ground side.
The sheet 20 has a sheet width of 8 m, and is configured so that the surface of the sheet 20 can be modified.

  A plurality of support bases 7A are provided on the lower surface of each beam 1, and a support 6 that hangs downward is provided on the lower surface of each support base 7A in the vertical direction indicated by an arrow C via variable positioning means 33 such as a screw. The height can be adjusted along the direction.

The oblong shape of the body box 9 sealed via the supporting support 34 provided to the turning device 100 swivel shaft 8 in a lower portion of each support 6 is mounted pivotably on the lower surface of the main box 9, as a U-shaped cross section and a to horizontally long shape of the cover 22 horizontally long shape of the electrode 19 connected to the insulating insulators 17 through the gap D of 2~4mm is formed to the surface of the earth roll 5 It is arranged.
As shown in FIG. 8, the openable / closable cover 7B on one surface of the cover 22 is openable and closable via a hinge 48 and a handle 48A so that maintenance of the electrode 19 and the like can be performed. .

Mainly by the previous SL swivel Body box 9 connected to the 10 and the electrode 19 and the cover 22 and the pivot shaft 8, each plurality of electrodes stations 21 are formed, as shown particularly in FIG. 2, of one The electrode station 21 is disposed on the upstream side, and the other electrode station 21 is disposed on the downstream side thereof so as to be separated from each other.

The electrodes 19 of the electrode station 21 are arranged in parallel with the axis of the earth roll 5 and are grounded at about 10 to 20 at an equal pitch of about 8 mm made of I-shaped aluminum plate and stainless steel. It is arranged in parallel with the roll 5.
The electrode 19 is supported in a state of being electrically insulated from the main body box 9 by a large number of electrode holders 35 and the insulating insulator 17.
The electrode holder 35 is sandwiched between a pair of nuts (not shown) by a screw 17a at the tip of the insulating insulator 17 and is provided to be movable up and down.

As shown in FIG. 9, a large number of holes 36 are provided on one surface of the main body box 9, and serve as a gas passage for flowing harmful gas accompanying corona discharge of the electrode 19 to a duct 16 described later. A gas discharge hole 37 for connection to the main body box 9 is located at the center in the longitudinal direction of the main body box 9.
Further, as shown in FIG. 4, the gas discharge hole 37 can be provided at one end of the main body box 9.
As shown in FIG. 1, each electrode 19 is configured to be supplied with power from a high voltage high frequency power supply device (not shown) through a high voltage wiring 39 of a terminal block 38.

  The gas discharge hole 37 provided at the center position of the main body box 9 is connected to a duct swivel joint 41 that is turnable via a bent elbow 40. The duct swivel joint 41 is connected to a 90 ° duct elbow 42 (connection The duct 16 is connected via a cylindrical body 70). The duct 16 can be directly connected to the duct swivel joint 41 without using the duct elbow 42.

  As shown in FIGS. 1, 2, 8, 9, and the like, each support 6 has the other end 10 b of the swivel device 10 having one end 10 a supported by the support 6. A balancer 44 connected to the end of an arm 43 provided on a pivot support shaft 8 of 34 via a bearing 45 is arranged between the support 6 and the arm 43. Yes. The arm 43 abuts against a stroke stopper 46 provided on the support 6, and the arm 43 abuts against the stroke stopper 46 in a state where the electrode 19 is close to the earth roll 5.

The swivel device 10 is composed of, for example, a well-known air cylinder with both cushions, and a fluid actuator such as gas or oil can be used as another structure.
By pushing and pulling the arm 43 by the swivel device 10, the entire electrode station 21 can be swiveled, and a bolt 47 is provided at the tip of the stroke stopper 46 so as to be able to protrude and retract. The rotation angle of the electrode station 21 can be adjusted by the amount.

  As shown in FIGS. 8 and 9, the balancer 44 has a mechanical or fluid type structure such as a known gas spring (gas-filled push cylinder) or a tension spring. The self-weight unbalanced rotational moment of the electrode station 21 including the main body box 9 around the axis 8 can be corrected.

The duct 16 is configured as shown in FIGS. 6 and 7, and one duct 16 is shown in the figure. However, the ducts 16 of the plurality of electrode stations 21 are combined into one and gas is discharged to the outside. Etc. can be discharged.
The main body box 9 has the gas discharge hole 37 on the pivot shaft 8 side, and an elbow 40 is attached to the flange of the duct 16.
The elbow 40 has a duct passage joint 41 provided at the tip of the elbow 40 by bending the axis of the gas passage by 90 ° in a direction parallel to the axis of the main body box 9.
Further, a 90 ° duct elbow 42 is provided at the tip, and a reducer 49 is provided at the tip of the 90 ° duct elbow 42. After expanding the gas passage cross-sectional area, the flexible duct 16 fixed by the duct band 50 is further connected. Do not continue to the outside through a suction blower.
The duct swivel joint 41 rotates freely with a 90 ° duct elbow 42 and can rotate around an elbow shaft core 52. In addition, there are two bearings 53 inside, and a seal 54 on the inner side, which is configured to prevent inflow of outside air.
The elbow axis 52 is made to substantially coincide with the axis of the turning support shaft 8 at the center of rotation of the electrode station 21 described above. Further, the degree of coincidence of the shaft cores is not strict.
FIG. 9 shows a state in which the elbow shaft 52 and the swivel support shaft 8 are offset by an eccentricity E.

Next, the operation of the first embodiment of the present invention (FIGS. 1, 2, 3, 8, and 9) will be described. Further, since ozone gas is generated by corona discharge of the electrode 19, this ozone gas is discharged to the outside through the duct 16 from the gas discharge hole 37 of the main body box 9 of the electrode station 21. In this case, in FIG. 1 and FIG. Of the four supports 6, there are swiveling devices 10 at a total of two locations on both sides of the device, but only the balancer 44 is installed at two central locations, and the body box 9 and the electrodes 19 are swiveled at the electrode station 21 in FIG. Since it is supported by the support shaft 8 and the center of gravity is on the right, a clockwise moment is working.
8 and 9, in the electrode station 21, the main body box 9, the support shaft support 34, and the arm 43 are fixedly connected integrally with a bolt (not shown), and a pressing force is applied to the balancer 44 connected to the arm 43. Therefore, a counterclockwise moment is generated around the pivotal support shaft 8 to balance the weight of the electrode station 21.
Since the pressing force of the balancer 44 is set to be equal to or greater than the weight balance, the swiveling device 10 (air cylinder) pin-connected to the tip of the arm 43 rotates to the left in the free state, and the earth roll as shown by the dotted line in FIG. 5 is separated from the electrode 19. That is, the gap D between the electrode 19 and the earth roll 5 is enlarged and moved to a position where the sheet 20 does not contact.
The opening position of the electrode station 21 is determined by the cylinder stroke end of the turning device 10. The balancer 44 uses a known gas spring. There is a piston and a rod inside, and high pressure nitrogen gas is sealed on the rod pushing side so that a pushing force is always generated.

This gas spring is a well-known one that is widely used for balancing the weight of the rear door of an automobile.
When the air cylinder of the turning device 10 is pushed and pulled, the main body box 9 turns and the electrode station 21 can be opened and closed. Since the balance of the weight of the main body box 9 is balanced by the balancer 44, it can be opened and closed with a slight force. During operation, the swivel device 10 (air cylinder) is pushed and pushed against the stroke stopper 46 in FIG. Hit it.
The weight balance of the electrode station 21 will be further described. The center of gravity of the electrode station 21 changes with a trigonometric function cosin θ depending on the movement angle θ of the opening operation. (Θ is an angle between the center of gravity and the horizontal direction of the earth) The angle between the gas spring of the balancer 44 and the arm 43 also changes according to the operation, and the pushing force also changes.
Therefore, although a perfect balance cannot be achieved, the purpose of this embodiment is to provide an approximate weight balance, so that the balance is achieved during operation, that is, in the state of FIG. The same applies to the balancer 44 using a tension spring.
To be precise, as described below, the force of the balancer 44 is increased so as to be opened during a power failure and when the air source pressure drops.

The air cylinder as the swivel device 10 has a known speed adjustment valve, and can adjust the operation speed. In addition, since there is a cushion on both sides of the air cylinder, there is a stop cushion at the stroke end and there is no stop impact.
The stroke stopper 46 is used to finely adjust the clearance D between the earth roll 5 and the electrode 19 as described above. The stroke stopper 46 is installed on the support 6, and the stop position (angle) of the arm 43 can be adjusted by inserting and removing the bolt 47 at the tip.
Since the balancer 44 has a load larger than the self-weight moment of the electrode station 21, when an abnormal situation occurs at the time of power failure or when the air source is stopped, the balancer 44 automatically operates in the clearance D opening direction. A safe device can be avoided.
Further, since the weight is balanced, the driving force of the turning device 10 can be reduced, and a small device can be realized.

FIG. 3 shows a state in which the swivel device 10 is opened to bring the power station 21 into the open position. The electrode station 21 pulls the air cylinder to open the gap D.
Similarly, the balancer 44 of the electrode station 21 uses a tension spring to generate a force by a pulling operation. Since this spring is set to have a force larger than the weight of the electrode station 21, the spring automatically opens even when the air pressure is lost due to a power failure or the like, and it is possible to prevent the sheet 20 from contacting the electrode 19. can do.

In addition, during the corona discharge operation shown in FIG. 2 described above, when external air enters from the cover 22 of the electrode station 21 and the gap D of the earth roll 5 and ozone gas generated by corona discharge at the tip of the electrode 19 is sucked and discharged, In a state in which ozone gas is mixed, it passes through the inside of the cover 22 and the hole 36 (FIG. 9) of the main body box 9, passes through the elbow 40, the duct swivel joint 41, and the duct 16, and then other electrode stations outside the corona treatment apparatus. 21 and the duct 16 are exhausted to the outside by a blower.
6 and 7 show details of the connecting portion between the main body box 9 and the duct 16 at the center of the main body box 9 of FIG. 1, and as described above, the elbow 40 allows the gas passage from the main body box 9 to pass through 90 °. Since it is bent and connected to the duct 16 through the duct swivel joint 41 by a 90 ° duct elbow 42 (which constitutes the connecting cylinder 70), the duct swivel joint 41 is connected to the axis of the main body box 9. The angle of each elbow can be freely changed around the parallel elbow axis 52. In addition, the suction gas can be sealed with the seal 54 to maintain confidentiality.
In addition, as described above, the elbow shaft core 52 and the pivot support shaft 8 are substantially coincident with each other, so that the position of the elbow shaft core 52 does not change even when the main body box 9 is swung.
In addition, even if there is an eccentricity E (that is, a state where the shaft centers are not coincident) shown in FIG. 9, the positional deviation accompanying the turning to the duct 16 is within the eccentricity E because the turning angle is about 60 °. In this embodiment, the eccentricity E is about 60 mm, but the movement of the shaft center of the 90 ° duct elbow 42 during turning is limited to 60 mm or less, and a marked improvement effect is obtained compared to the conventional movement of 750 mm. . This movement is absorbed by the flexibility of the duct 16.
As a result, even if the main body box 9 is turned by the opening / closing operation, the duct 16 can remain at substantially the same position without being swung. Further, there is a reducer 49 on the downstream side of the duct swivel joint 41, so that the passage cross-sectional area can be increased and the gas flow resistance can be reduced. In other words, the duct swivel joint 41 is downsized and the eccentricity E (FIG. 9) is reduced. That is, since the elbow 40 is usually large and the support shaft support 34 is small, eccentricity E often occurs, so E is made small.

Also, there are four supports 6 in FIG. 1, and the long main body box 9 is supported at multiple points, so that the weight of the weight is reduced (shown in FIG. 14).
As an example, the cross-sectional shape is the same and the length is changed. In this case, it is estimated that the beam length will be tripled when supported by four supports 6. When this beam length is tripled, its own weight is tripled, and the deflection is 27 times in proportion to the cube of the length, resulting in a deflection of 3 × 27 = 81 times. Actually, it is a continuous beam as shown in FIG.
That is, when the beam length of the conventional example of FIG. 15 is different from that of FIG. 1 of the present invention by 3 times, the deflection is compared to 1/81 or less, and the deflection is reduced to 1/81 or less than the conventional. .

In this way, if the support 6 is used to support multiple points, the wrinkles are reduced by orders of magnitude, and the strength of the main body box 9 can be reduced, so that the weight can be reduced.
Further, as a rough correction of the main body box 9, there are four supports 6, and the individual vertical positions can be adjusted (FIG. 12).
Further, when the long main body box 9 is bent in the support 6 and when the long beam 1 on the support side is bent, the position of the turning support shaft 8 can be corrected and adjusted up and down. That is, four sets of pull bolts 60 push bolts 61 are provided close to the upper end plate 6A of the support 6, and the push bolts 61 have a screw on the support 6 side, and push the upper support base 7A to be used instead of shims. To do. The pull bolt 60 supports the support 6 by screwing to the upper support base 7A. By performing this push-pull adjustment, the vertical position of the support 6 can be changed and adjusted. As a result, the swivel support shaft 8 of the main body box 9 can be individually adjusted, so that when the center portion is large, the two supports 6 at the center portion are pulled up, and the clearance D between the electrode 19 and the earth roll 5 is roughly outlined over a wide range. Can be adjusted. Further, fine clearance adjustment is performed by moving the position of each electrode holder 35 up and down.

The openable / closable cover 7B of the cover 22 installed in the four directions around the electrode 19 can be attached with a hinge 48 on one side of the body box 9 in the longitudinal direction and can be opened with the upper body box 9 side as a fulcrum.
This is convenient for the opening operation because there is a handle 48A in the case of the gap adjustment of the electrode 9 or the removal of the blur. Further, at the time of maintenance, the cover 22 can be stopped and operated with a hook (not shown). This hinge 48 is installed on the cover on the outer surface of each electrode station 21 in FIG. 2, and the maintenance work is performed from the outside, so that only one surface is installed. In addition, the cover 22 in the longitudinal direction is cut in units of 2 m and used by arranging four pieces, and three hinges 48 are used for each cover 22.

  Further, since the beam 1 supports the entire apparatus, it is made highly rigid and does not resonate due to vibration caused by operation. Therefore, the main body box 9 supported via the support 6 also becomes highly rigid, and the electrode 19 And the clearance D of the earth roll 5 is stabilized. Further, the earth roll 5 is grounded by the earth brush 32 by the earth brush 32, and is rotationally driven by the motor 30 and corona discharge is caused by the gap D with the electrode 19. However, the touch roll 5A shown in FIG. The air between the ground roll 5 and the sheet 20 is removed to prevent the sheet 20 from floating from the ground roll 5.

Next, another embodiment of the present invention will be described with reference to FIGS. That is, in the corona discharge device of FIGS. 4 and 5, an embodiment of a relatively narrow device having a sheet width of about 5 m is shown.
This is an example in which the discharge portion of the duct 16 is provided on the drive side which is the side end 9 a of the main body box 9. Three sets of supports 6 are installed. The duct 16 substantially coincides with the turning support shaft 8, and is connected to the duct 16 via a flexible duct 16A (which constitutes the connecting cylinder 70) on the distal end side of the duct turning joint 41. The duct 16 is fixed to the frame 2 with a duct support 55.
When the main body box 9 is rotated by the turning device 10, the displacement of the eccentricity E causes a displacement in the fixed duct 16, but the displacement can be absorbed by the flexible duct 16A. The duct 16 is also flexible, but the flexible duct 16A is configured to be more flexible. The duct 16 can be directly connected to the duct swivel joint 41 without using the flexible duct 16A.
Further, the twisting of the turning motion can be absorbed because the duct turning joint 41 rotates freely. Further, in this example, since the gas is sucked from one side of the main body box 9, a difference occurs in the suction force in the width direction. For this reason, the pitch P of the hole 36 shown in FIG. 9 is provided in steps, the pitch P on the operation side far from the suction port is narrowed, and the drive side is widened (pitch size ratio is about 3: 4).
As a result, a substantially uniform gas suction force can be obtained in the width direction at a level that allows practical operation even with one-side suction.
In the embodiment shown in FIGS. 4 and 5, a straight type flexible duct 16A is connected to the duct swivel joint 41, and a duct support 55 and a duct 16 are further provided. As shown in FIGS. A duct elbow 42 may be provided at the rear end of the duct swivel joint 41.
In addition, the same code | symbol is attached | subjected to the same part as above-mentioned embodiment, and the description is abbreviate | omitted.

Next, still another embodiment of the present invention will be described.
In the example of FIG. 1, four sets of supports 6 are used, but two sets of supports 6 may be used. Regardless of the width of the sheet 20, the wide sheet 20 can be applied even when the length of the main body box 9 is 8 m, and even with six or two supports, the warp is sufficiently small and is practically sufficiently effective.
In FIG. 4, the installation is reduced to 41% compared to the conventional FIG. 17 (equivalent to the conventional example, FIG. 15 and FIG. 16) by installing the main body box 9 at two locations 1 m from both ends in the length direction. (Estimation: Free support beams at both ends, equal distributed load and comparison of continuous beams with a support span of 6m / 8m = 75%).

Next, still another embodiment of the present invention will be described. Regarding the duct swivel joint 41, the example in which the duct swivel joint 41 is arranged at the center and the operation side has been described, but the duct swivel joint 41 may be disposed on both sides to exhaust gas from both the operation side and the drive side, The sheet 20 can be applied to an apparatus having a width exceeding 10 m in the future.
Moreover, you may arrange | position the two duct turning joints 41 in the width direction 25% position and 75% position of the main body box 9. FIG. The arrangement of the ducts 16 is extended upward as in FIG. 1, and two ducts are merged on the beam 1 to form one, and gas is exhausted to the outside. This is effective for large equipment.
Further, in the case of the balancer 44, the balancer 44 is connected to the arm 43, but it may be connected to the support 6 or the support base 7A by a spring or the like by attaching a hook to the main body box 9 in another place. Further, in the case of the sheet lower surface processing apparatus, this example is for sheet upper surface processing, but for the lower surface processing, it can be configured by reversing the top and bottom and reversing the weight balance direction.
That is, it can be realized by arranging the electrode station 21 below the earth roll 5.
In FIGS. 1 to 6 of the present embodiment, two sets of electrode stations 21 are provided on one earth roll 5, but in the case of one set, there may be three sets. For large machines, use 2-3 sets.

  The corona discharge device according to the present invention can be applied not only to the surface treatment of a plastic sheet but also to other papers, coating of an aluminum sheet, pretreatment and the like.

DESCRIPTION OF SYMBOLS 1 Beam 1A Beam stand 2 Frame 5 Ground roll 5A Touch roll 6 Support 7A Support stand 7B Openable / closable cover 8 Turning support shaft 9 Body box 10 Turning device 16 Duct 16A Flexible duct
17 Insulating insulator 19 Electrode 20 Sheet 21 Electrode station 22 Cover 30 Motor 33 Variable positioning means 32 Ground brush 34 Spindle support 35 Electrode holder 36 Hole
37 Gas exhaust hole 38 Terminal block 39 High voltage wiring 40 Elbow 41 Duct swivel joint 42 Duct elbow (constitutes connecting cylinder 70)
43 Arm 44 Balancer (gas spring, tension spring)
44A Safety Release Device 45 Bearing 46 Stroke Stopper 48 Hinge 48A Handle 49 Reducer 50 Duct Band 52 Elbow Shaft 53 Bearing 54 Seal 60 Pull Bolt 61 Push Bolt

Claims (3)

A pair of frames (2) provided at both ends of the horizontally long beam (1), a ground roll (5) rotatably provided between the frames (2), and a lower part of the beam (1) support pedestal and turning device (7A) 1 one or more electrodes stations having a cover (22) of the transverse length shape forming a (10) via a pivot Re rotatably provided et U-shaped cross section (21), the electrode a station (21) body housing (9) which is an oblong shape with being connected to the pivoting device for constituting a part (10) having a plurality of holes (36) of the longitudinal of the present body box (9) A duct (16) connected to the gas discharge hole (37) located at the center or one end of the direction, and an insulating insulator (17) provided on the lower surface of the body box (9) via the cover (22) A horizontally elongated electrode (19) connected to
From said each hole (36) of said ground roll (5) in through the front Symbol electrode (19) relative to the seat (20) which was about to wind performs corona discharge occurs at least noxious gases the main box (9) before SL via a duct (16) so as to exhaust to the outside,
Elbow (40) provided in the gas discharge holes of the side surface (37) of the main box (9), and the elbow (40) connected to the duct pivot joint (41), the duct pivot joint (41) And a duct elbow (42) provided between the duct (16) ,
In the duct pivot joint (41) the duct directly or through a connecting cylinder (70) to (16) are connected benzalkonium corona treatment equipment, the pivot member of the pivot device (10) (8) features and to Turkey corona treatment apparatus that the elbow axis (52) one 致又is a non-match of the a axis elbow (40). The electrode (19), through said electrode holder (35)及beauty the insulation Insulators (17) is connected to the outer surface of the main box (9), said electrode (19), the electrode holder (35) and the insulating insulators (17), at least the I covering the tetrahedral mosquitoes surrounded by bars (22), said pivot member (8) having parallel axis in the longitudinal direction of the main box (9), said main box (9 in the vicinity of the outer surface of), in the longitudinal direction together with via support stand provided on the lower surface (variable positioning means with respect 7A) (33) support provided through (6) of the beam (1) The electrode station (21) is formed by the body box (9), the electrode (19), the cover (22), and the pivot support shaft (8), and the support (6) is the support table ( have Rutotomoni the pivoting device is provided on the lower surface (10) is provided on the support (6) of 7A), said support (6) by said variable positioning means (33) By being configured to be able to adjust the height along the lower direction, the gap between the electrode (19) and the ground surface of the roll (5) (D) is variable, the turning The device (10) is composed of a telescopic mechanical or fluid type linear actuator, and between the support (6) and the swivel support shaft (8), a mechanical type having an urging force in one direction or A fluid type balancer (44) is provided, and the balancer (44) corrects the self-weight unbalanced rotational moment of the electrode station (21) including the main body box (9) around the pivot support shaft (8). corona treatment apparatus according to claim 1 Symbol mounting, characterized in that. The balancer (44) has a preset set load larger than the self-weight unbalance rotation moment, and the entire electrode station (21) is retracted away from the earth roll (5) during a power failure and when the air source pressure is reduced. safety opening device corona treatment apparatus according to claim 2 Symbol mounting and having a function of (44A) for moving the position.

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