JP2015151159A - charging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a charging device capable of easily performing repasting and peeling and charging into a sheet so as to obtain strong adhesive force caused by an electric field.SOLUTION: In a charging device, a first discharge electrode 3 to which a positive voltage is applied and a second discharge electrode 4 to which a negative voltage is applied are provided; a positive charging area S1 is formed on a sheet-like insulator 1 to be charged by the first discharge electrode 3 to which the positive voltage is applied; a negative charging area S2 is formed on the sheet-like insulator 1 to be charged by the second discharge electrode 4 to which the negative voltage is applied; and the total charge amount of the positive charging area S1 is equal to or substantially equal to the total charge amount of the negative charging area S2.

Description

  The present invention relates to a charging device for strongly attaching a sheet-like insulator to an object to be attached and making it easy to reattach.

Conventionally, in order to manage the history in the manufacturing process of industrial products and the information in the distribution process, an IC label provided with an IC tag is attached to the product.
Such an IC label is obtained by bonding an IC chip including a memory and an antenna capable of reading and writing information in a contactless manner to the sheet surface or being embedded inside. An adhesive layer is provided on one surface of the IC label, and the IC label is adhered to a target product by the adhesive.

JP 2006-301900 A

Such an IC label becomes unnecessary after achieving the purpose of, for example, collecting the history of the manufacturing process and outputting the information. However, since the IC label that is no longer needed is adhered with an adhesive, if the IC label is removed, the adhesive may remain on the product. If the pressure-sensitive adhesive remains, the appearance may be poor and the commercial value may be reduced. In addition, if new dust or the like adheres to the remaining adhesive, not only will the appearance worsen, but the attached dust may affect the performance of the product.
Such an IC label that is difficult to be peeled off could only be attached to an object that does not need to be peeled off or that may leave a trace of the adhesive.
Further, since the IC label once pasted cannot be easily peeled off, there is a problem that it is difficult to re-paste when the pasting position is shifted.

As a method for solving the above-mentioned problems of conventional IC labels and making the IC label etc. detachable to the adhesion target without using an adhesive, the IC label is charged and the distance between the charged surface and the object to be attached A method using an electric field formed on the substrate can be considered.
FIG. 11 for explaining this method is a diagram showing a state in which the insulating sheet 1 constituting the substrate of the IC label is charged to the positive electrode and attached to the conductor 2 to be attached. In addition, the thickness of the insulating sheet 1 is shown here thickly for explanation.
The insulating sheet 1 is given a positive charge amount + Q by, for example, a general charging device including a discharge electrode to which a positive high voltage is applied, and the charging potential at that time is + V. When the positively charged insulating sheet 1 comes into contact with the surface of the conductor 2, negative induced charges are generated in the conductor 2 in accordance with the positive charge amount + Q.

The negative induced charge is attracted to the positively charged insulating sheet 1 side, leaving a positive charge in the conductor 2.
Due to the positive charge in the conductor 2, a potential difference + Vg (see FIG. 11) is generated between the electrodes of the stray capacitance Cg of the conductor 2. Since this potential difference + Vg is a potential difference between the ground and the conductor 2, it becomes the potential + Vg of the conductor 2.
On the other hand, since the positive charge of the conductor 2 that generates the potential + Vg is a positive charge corresponding to the negative induced charge induced by the charge amount Q1 of the insulating sheet 1, + Vg and the charged potential + V are close to each other. Become.

Thus, since the charging potential (+ V) of the insulating sheet 1 and the potential (+ Vg) of the conductor 2 are close to each other, the potential difference Vc = (+ V) − (+ Vg) between the insulating sheet 1 and the conductor 2 is The electric field intensity between the insulating sheet 1 and the conductor 2 becomes almost zero. That is, the conventional method for charging the sheet as described above has a problem that the electric field strength between the charged insulating sheet 1 and the conductor 2 is small, and an adhesive force that can withstand use cannot be obtained.
If the conductor 2 is grounded, the charge is supplied from the ground when the induced charge is generated, so that the potential of the conductor 2 can be kept at the ground potential by the charge. As a result, the electric field strength between the insulating sheet 1 can be increased. However, if the object to which the insulating sheet 1 is to be attached must be grounded, the usage scene is limited.

  An object of the present invention is to provide a charging device that can be easily reattached and peeled off and can charge a sheet so as to obtain a strong adhesive force by an electric field.

A first invention includes a discharge electrode to which a positive voltage is applied and a discharge electrode to which a negative voltage is applied. The discharge electrode to which the positive voltage is applied positively adds to a sheet-like insulator to be charged. The negative charging area is formed on the sheet-like insulator to be charged by the discharge electrode to which a negative voltage is applied, and the total charge amount of the positive charging area and the total of the negative charging area are formed. The charge amount is made equal or nearly equal.
The total charge amount in the positive charging area and the total charge amount in the negative charging area are charge amounts having opposite polarities. Therefore, “to make both the total charge amounts equal” means to make the absolute values of the total charge amounts having opposite polarities equal.

  The second invention is opposed to a discharge electrode to which a positive voltage is applied, and is opposed to an ion passage electrode that applies a positive voltage to pass positive ions and a discharge electrode to which a negative voltage is applied. And an ion passage electrode that allows negative ions to pass therethrough.

  According to a third aspect of the invention, there is provided charge amount adjusting means for making the total charge amount of the positive charging area equal to or substantially equal to the total charge amount of the negative charging area.

  4th invention presupposes 3rd invention, the discharge electrode to which a positive voltage is applied is opposed, the ion passage electrode which passes a positive ion by applying a positive voltage, and a negative voltage is applied And an ion passage electrode that passes negative ions by applying a negative voltage, and the ion passage electrode constitutes the charge amount adjusting means.

  In a fifth invention, the charge amount adjusting means includes the ion passing electrode and an area adjusting means for adjusting an area of a passing portion through which ions pass.

  In a sixth aspect of the invention, the charge amount adjusting means includes height control means for controlling a relative height between the positive discharge electrode and the negative discharge electrode.

  7th invention presupposes 3rd or 6th invention, The said charge amount adjustment means consists of voltage control means which controls the voltage applied to the said discharge electrode.

  The eighth invention is based on any one of the second, fourth and fifth, and includes switching means for switching the polarity of the voltage applied to the ion passage electrode to a polarity opposite to the voltage applied to the opposing discharge electrode, There is provided a moving device that moves the discharge electrode to which the positive voltage is applied and the discharge electrode to which a negative voltage is applied, and the ion passage electrode facing the discharge electrode while maintaining the positional relationship between them. Yes.

  According to a ninth aspect of the present invention, an insulating separation member made of an insulator is provided between the discharge electrode to which the positive voltage is applied and the discharge electrode to which a negative voltage is applied. A sheet contact surface that protrudes toward the sheet-like insulator to be charged from the ion passage electrode and contacts the surface of the sheet-like insulator is provided, and the sheet contact surface is connected to a negative pressure generating means. A suction port is provided, and the sheet-like insulator can be held by the suction port.

According to the first aspect of the present invention, the charged sheet-like insulator is made conductive to be attached by making the total charge amount of the positive charging area equal to or substantially equal to the total charge amount of the negative charging area. It can be strongly attached to the surface of the body by a large adsorption force.
If the total charge amount in the positive charging area of the sheet-like insulator is different from the total charge amount in the negative charging area, there is a positive / negative balance of the charges induced on the surface of the conductor in contact with the sheet-like insulator. Collapse. Since no electric charge is supplied to the conductor from the outside, a charge of opposite polarity corresponding to the charge induced on the surface remains in the conductor, but the balance between the positive and negative of the induced charge is lost, so the surplus charge Will be biased to either positive or negative. This surplus charge biases the electric potential of the conductor to either positive or negative, and weakens the electric field generated between the charging area of the sheet-like insulator and the electric conductor. As the electric field is weakened, the adhesive force is reduced.

However, as in the present invention, if the total charge amount in the positive charging area is equal to the total charge amount in the negative charging area, the positive and negative charges in the conductor are induced in a balanced manner, so that the potential of the conductor is grounded. It becomes equal to the electric potential and does not weaken the electric field formed for each positive and negative charging area. Therefore, the sheet-like insulator can be firmly adhered to the object to be pasted by the action of a strong electric field.
In this way, since the sheet-like insulator can be attached to the object to be attached by the action of an electric field, unlike the case of using an adhesive, it can be easily attached, peeled off, or even reattached. it can.

Further, since the potential of the boundary portion between the positive charging area and the negative charging area in the sheet-like insulator can be kept substantially zero, the sheet-like insulator is provided when an electronic device such as an IC chip is provided at the boundary portion. Does not affect the electronic device.
As described above, the sheet-like insulator charged by the charging device of the present invention is strongly adhered to the target object and at the same time achieves the conflicting purposes such as easy to peel off when it is peeled off. Can do.

  According to the second invention, by controlling the voltage applied to the ion passage electrode, the respective charging potentials of the positive charging area and the negative charging area facing the ion passage electrode can be easily controlled. .

  According to the third aspect of the invention, the total charge amount of the positive charging area and the total charge amount of the negative charging area are respectively adjusted so that the total charge amounts of both charging areas are equal or substantially equal. Can do.

According to the fourth invention, by controlling the voltage applied to the ion passage electrode, the respective charging potentials of the positive charging area and the negative charging area can be easily controlled. As a result, the total charge of each charging area can be controlled. The amount can be easily controlled.
In addition, when a relative difference is required between the areas of the positive and negative charging areas, the total charge amount of the positive and negative charging areas can be made equal by adjusting the applied voltage of the ion passage electrode according to the areas of both charging areas. it can.
Therefore, for example, even when it is necessary to provide an electronic device or the like in a place where the sheet-like insulator is biased, if the non-charged area between the positive and negative charged areas is made to correspond to the position of the electronic device, the electronic device Strong adhesion can be ensured without damaging it.

According to the fifth aspect, the area of each charging area can be adjusted by adjusting the area of the passage portion of the ion passage electrode. By adjusting the area of each charging area, the total charge amount in both charging areas can be made equal or substantially equal.
Furthermore, when a relative difference is required in the area of one of the positive and negative charged areas, the area of the ion passing electrode is adjusted to adjust the area of the charged area and applied to the ion passing electrode. By controlling the voltage to be applied, the amount of charge can be made equal while the areas of both charging areas are different.
Therefore, as in the case of the fourth invention, even when it is necessary to provide the electronic device or the like where the sheet-like insulator is biased, a strong adhesion is ensured without damaging the electronic device. be able to.

According to the sixth aspect of the invention, the area of the charging area can be controlled by adjusting the distance between the discharge electrode and the sheet-like insulator by controlling the height of the discharge electrode.
According to the seventh aspect, the charge amount in the charging area can be adjusted by the magnitude of the voltage applied to the discharge electrode.

According to the eighth invention, after applying a voltage to the discharge electrode to charge the sheet-like insulator, a voltage having a polarity opposite to that at the time of charging is applied only to the ion-passing electrode, and the sheet-like insulation is applied to the ion-passing electrode. You can attract and hold your body. While holding the sheet-like insulator, the discharge electrode and the ion passage electrode can be moved by the moving device, and the sheet-like insulator can be transported to the target position. After conveying the sheet-like insulator to the target position, a voltage can be applied to the discharge electrode and the ion passage electrode to adhere the sheet-like insulator to the target.
Therefore, the charging device of the present invention can also adhere the stocked sheet-like insulator to the object to be pasted after transporting it to the target position.

According to the ninth aspect, the sheet-like insulator to be charged can be sucked and held using negative pressure.
In addition, by bringing the sheet contact surface of the insulating separation member into contact with the surface of the sheet-like insulator, the insulating separation member exerts a spacer function that maintains the distance between the ion passage electrode and the surface of the sheet-like insulator, and is stable. Can be charged.

FIG. 1 is a conceptual diagram of the charging device according to the first embodiment. 2A and 2B are conceptual diagrams showing a process of attaching a sheet-like insulator using the charging device of the first embodiment, wherein FIG. 2A is a sheet-like insulator transport process, FIG. 2B is a charging process, and FIG. Indicates an attached state. FIG. 3 is a conceptual diagram illustrating a charging process using the charging device of the first embodiment. FIG. 4 is a conceptual diagram illustrating the adhesive force of the first embodiment. FIG. 5 is a plan view of the sheet-like insulator of the first embodiment. FIG. 6 is a conceptual diagram showing a static elimination process for peeling off the sheet-like insulator adhered in the first embodiment. FIG. 7 is a perspective view showing an adjustment plate which is an area adjustment means for adjusting the area of the passage portion of the ion passage electrode of the first embodiment. FIG. 8 is a conceptual diagram showing a method for conveying a sheet-like insulator in the charging device of the second embodiment. FIG. 9 is a conceptual diagram of the charging device of the third embodiment. FIG. 10 is a conceptual diagram showing the relationship between the area of the charging area formed by the charging device of the third embodiment and the facing distance between the discharge electrode and the sheet-like insulator to be adjusted. FIG. 11 is a conceptual diagram for explaining the adhesion force when a conventional charging device is used.

The charging device according to the first embodiment shown in FIGS. 1 to 5 is a device for charging an insulating sheet 1 which is a sheet-like insulator and attaching it to a conductor 2 to be attached. In the following embodiments, it is assumed that the insulating sheet 1 and the conductor 2 are electrically insulated from the ground.
Moreover, the said insulating sheet 1 is provided with the electronic device D which consists of an IC chip in the center, as shown in FIG.
The charging device according to the first embodiment shown in FIG. 1 has a flat plate-shaped first electrode facing the needle-like first and second discharge electrodes 3 and 4 and the tips of the discharge electrodes 3 and 4 on a device body (not shown). , 2 ion passage electrodes 5, 6, and the first discharge electrode 3, the first ion passage electrode 5, the second discharge electrode 4, and the second ion passage electrode 6 are disposed between the second discharge electrode 4 and the second ion passage electrode 6. .
Furthermore, a moving device (not shown) that enables the device main body to move is provided.
The first and second ion passage electrodes 5 and 6 are formed by forming through holes through which ions pass through a conductive member such as a metal plate. In the first embodiment, a metal mesh is used. However, the ion passage electrodes 5 and 6 are not limited to the metal mesh, and may be conductive and include a through hole through which ions can pass. Further, the number of through holes through which ions pass may be any number, for example, one.

The insulation separation member 7 is a member made of an insulator and having a function of electrically insulating the first and second ion passage electrodes 5 and 6.
The insulating separation member 7 has a suction passage 7a connected to a negative pressure generating means (not shown), and the tip of the insulating separation member 7 is charged from the first and second ion passage electrodes 5 and 6. A sheet contact surface 7b that protrudes to the side and contacts the insulating sheet 1 is provided, and one end of the suction passage 7a is opened as a suction port 7c on the sheet contact surface 7b.
Further, the first discharge electrode 3 and the first ion passage electrode 5 are connected to a power supply unit 8 that outputs a positive voltage when the insulating sheet 1 is charged, and the second discharge electrode 4 and the second ion passage electrode. The electrode 6 is connected to a power supply unit 9 that outputs a negative voltage during the charging.
That is, the first ion passage electrode 5 becomes an ion passage electrode that allows positive ions to pass therethrough, and the second ion passage electrode 6 becomes an ion passage electrode that allows passage of negative ions.

A process of attaching the insulating sheet 1 to the conductor 2 using the charging device as described above will be briefly described with reference to FIGS. 2A to 2C, the power supply units 8 and 9 and the wiring are omitted.
As shown in FIG. 2 (a), when the sheet contact surface 7b of the insulating separation member 7 is brought into contact with the center of the insulating sheet 1 stored separately from the conductor 2, and the negative pressure generating means functions, the sheet The insulating sheet 1 can be adsorbed by the negative pressure of the suction port 7c of the contact surface 7b.
When the insulating sheet 1 is adsorbed by the suction port 7c, the apparatus main body is moved by a moving device (not shown) and the insulating sheet 1 is placed on the conductor 2.

When the insulating sheet 1 transported by the insulating separating member 7 is placed on the conductor 2, the negative pressure generating means is stopped to release the suction force between the insulating separating member 7 and the insulating sheet 1. Even if the suction force is released, the sheet contact surface 7b of the insulating separation member 7 is brought into contact with the center of the insulating sheet 1 so as to cover the electronic device D (see FIG. 5). Thus, by covering the electronic device D with the insulating separation member 7, the influence of the charged charge on the electronic device D can be more reliably eliminated during charging.
However, the insulating separation member 7 that can cover the electronic device D is not essential. In the above charging device, a voltage can be simultaneously applied to the discharge electrodes 3 and 4 to form the positive charging area S1 and the negative charging area S2 at the same time. Therefore, a potential is almost always between the charging areas S1 and S2. A zero uncharged area is formed. Therefore, if the electronic device D is made to correspond to the position of the non-charged area, the influence of the charged charge received by the electronic device D can be minimized.

Next, the power supply units 8 and 9 are operated to charge the insulating sheet 1 as shown in FIG.
2B, a positive high voltage is applied to the first discharge electrode 3 by the power supply unit 8, and the first ion passage electrode 5 is lower than that applied to the first discharge electrode 3 during charging. Apply a positive low voltage. Further, a negative high voltage is applied to the second discharge electrode 4, and a negative low voltage lower than that applied to the second discharge electrode 4 is applied to the second ion passage electrode 6.

Although details of this charging will be described later, a positive charging area S1 and a negative charging area S2 are formed on the insulating sheet 1 by applying positive and negative voltages to the first and second discharge electrodes 3 and 4. Then, an adhesion force due to an electric field is generated between the charging areas S1 and S2 and the conductor 2 (FIG. 2C).
When the insulating sheet 1 adheres to the conductor 2 due to the adhesive force due to the electric field, the power supply units 8 and 9 stop applying the voltage to each electrode and separate the apparatus main body from the insulating sheet 1. In the state of FIG. 2C, the insulating sheet 1 can be kept attached to the conductor 2.

The mechanism by which the insulating sheet 1 adheres to the conductor 2 due to the charging shown in FIG. 2B will be described with reference to FIGS.
FIG. 3 is a conceptual diagram illustrating a state during charging in which the insulating sheet 1 is charged by the charging device according to the first embodiment, and FIG. 4 is a plan view of the insulating sheet 1. FIG. 5 is a conceptual diagram for explaining the adhesive force of the charged insulating sheet 1.
As shown in FIG. 3, when a positive voltage is applied to the first discharge electrode 3 and the first ion passage electrode 5, positive ions are generated near the tip of the first discharge electrode 3. The positive ions move so as to be attracted to the first ion passage electrode 5 side by the potential difference between the first discharge electrode 3 and the first ion passage electrode 5. Some of the positive ions contact with the first ion passage electrode 5 and are absorbed, but the positive ions that have passed without being absorbed by the first ion passage electrode 5 charge the surface of the insulating sheet 1.

  Further, since a positive voltage is applied to the first ion passage electrode 5, a potential difference is generated between the first ion passage electrode 5 and the surface of the uncharged insulating sheet 1. Due to this potential difference, positive ions that have passed through the first ion passage electrode 5 are guided to the surface of the insulating sheet 1, and a positive charging area S1 is formed on the surface of the insulating sheet 1. When the surface of the insulating sheet 1 continues to be charged by positive ions in this way, the charging potential of the charging area S1 increases and becomes equal to the potential of the first ion passage electrode 5. When the potential difference between the charging area S1 and the first ion passage electrode 5 becomes zero, the action of guiding the positive ions to the insulating sheet 1 is lost, so that the charging potential of the charging area S1 does not increase any more. That is, a positive charging area S <b> 1 having substantially the same potential as that of the first ion passage electrode 5 can be formed on a portion of the surface of the insulating sheet 1 facing the first ion passage electrode 5.

  On the other hand, a negative voltage is applied to the second discharge electrode 4 and the second ion passage electrode 6 by the power supply unit 9. The negative ions generated near the tip of the second discharge electrode 4 move so as to be attracted to the second ion passage electrode 6, and the negative ions that have passed through the second ion passage electrode 6 move to the second ion passage electrode 6. The mechanism led to the insulating sheet 1 by the potential difference between the charging potential of the insulating sheet 1 and the insulating sheet 1 is the same as the positive polarity side described above. Therefore, a negative charging area S2 having substantially the same potential as that of the second ion passage electrode 6 can be formed on the surface of the insulating sheet 1 and facing the second ion passage electrode 6.

As described above, the positive charging area S1 and the negative charging area S2 are formed on the surface of the insulating sheet 1 (see FIG. 2C).
In the first embodiment, the areas of the first and second ion passage electrodes 5 and 6 are made equal, and the absolute values of the positive and negative voltages applied to the ion passage electrodes 5 and 6 are made equal. Therefore, the positive charging area S1 and the negative charging area S2 have substantially the same area, and the absolute value of the charging potential is also equal, so that the total charge amount of the positive charging area S1 and the total charge of the negative charging area S2 are the same. The amount is equal.

  As described above, when the positive charging area S1 and the negative charging area S2 having the same total charge amount are formed, the electric field between the both charging areas S1 and S2 and the conductor 2 is formed. A strong adhesion force is generated, and the insulating sheet 1 can be adhered to the conductor 2. The reason why the adhesion between the insulating sheet 1 and the conductor 2 is increased by forming the positive and negative charging areas S1 and S2 as described above is as follows.

  As shown in FIG. 4, when the insulating sheet 1 formed with the positive charging area S1 and the negative charging area S2 is in contact with the conductor 2, the surface of the conductor 2 has the positive charging area. Negative charge is induced in the portion corresponding to S1, and positive charge is induced in the portion corresponding to the negative charging area S2. These induced charges correspond to the total charge amounts of the positive and negative charging areas S1 and S2. In the charging device of the first embodiment, since the total charge amount of the positive and negative charging areas S1 and S2 is equal, the negative charge amount induced on the surface of the conductor 2 is equal to the positive charge amount. It should be. Therefore, the positive and negative charge amounts remaining in the conductor 2 are also equal. That is, the conductor 2 is not positive or negative, and the potential Vg of the conductor 2 that is the interelectrode potential difference of the stray capacitance Cg is equal to the ground potential.

Therefore, the potential difference V1 between the positive charging area S1 and the conductor 2 is V1 = (+ V) − (+ Vg) = (+ V), and the potential difference V2 between the negative charging area S2 and the conductor 2 = (− V). − (+ Vg) = (− V). Thus, the potential difference between the charging areas S1 and S2 and the conductor 2 is + V and −V. This potential difference is overwhelmingly larger than the potential difference Vc, (+ V) − (Vg) ≈0 when the conventional charging device shown in FIG. 11 is used.
As described above, when the total charge amounts of the positive and negative charging areas S1 and S2 are equal, the electric potential Vg of the conductor 2 is kept at the ground potential, and the electric field strength formed between the insulating sheet 1 is increased. . Therefore, in the first embodiment, the electric field formed between the insulating sheet 1 and the conductor 2 is strong, and the adhesion of the insulating sheet is overwhelmingly larger than that in the conventional case.

As described above, by using the charging device of the first embodiment, the insulating sheet 1 can be strongly attached to the conductor 2 by an electric field. Moreover, since the adhesive is not used, when the insulating sheet 1 is peeled off, there is no possibility that the adhesive remains after peeling.
The insulating sheet 1 attached by an electric field can be easily peeled off by removing the insulating sheet 1 to release the adhesive force due to the electric field.

The charging device of the first embodiment can also be used for static elimination when the insulating sheet 1 is peeled from the conductor 2.
When neutralizing the insulating sheet 1, as shown in FIG. 6, the first and second ion passage electrodes 5, 6 are opposed to the positive and negative charging areas S 1, S 2 of the insulating sheet 1 as in charging, The polarity of the output voltage of the power supply units 8 and 9 is switched to the opposite to apply a voltage to the first and second discharge electrodes 3 and 4, and the first and second ion passage electrodes 5 and 6 are grounded. Accordingly, negative ions are supplied from the first discharge electrode 3 to which a negative voltage is applied to the positive charging area S1, neutralizing the positive charging area S1, and a positive voltage is applied to the negative charging area S2. Positive ions are supplied from the applied second discharge electrode 4 to neutralize the negative charging area S2.
When the insulating sheet 1 is neutralized in this way, the induced charge of the conductor 2 moves in the conductor 2 and the adhesion due to the electric field disappears, so that the insulating sheet 1 can be easily peeled off.

If charging and discharging are repeated in this manner, the insulating sheet 1 can be easily reattached.
Further, at the time of static elimination, as in the case of charging, ions are guided to the positive and negative charging areas S1 and S2 by the action of the potential difference between the first and second ion passage electrodes 5 and 6 and the positive and negative charging areas S1 and S2. . Therefore, when the potentials of the charging areas S1 and S2 become the potentials of the first and second ion passage electrodes 5 and 6, that is, the ground potential, the neutralization is completed, and the reliable neutralization can be performed without reverse charging.
By performing such static elimination, not only can the insulating sheet 1 be easily peeled off, but the insulating sheet 1 after peeling is not left in a charged state.
If the insulating sheet 1 is left charged, there is a possibility that dust or the like may electrostatically adhere to the device body D or cause an electrical adverse effect such as electrostatic discharge on the device body D. If so, such a problem does not occur and the insulating sheet 1 can be reused.
However, in the case of an application that may be left in a charged state, the insulating sheet 1 may be forcibly separated from the conductor 2 without performing reliable neutralization. Even in that case, there is no peeling mark as in the prior art using an adhesive.

In the first embodiment, the total charge amount of the positive and negative charging areas S1 and S2 is made equal to increase the adhesion force of the insulating sheet 1, but the total charge amount of the charging areas S1 and S2 is completely Even if it is not equal and slightly biased to one of the polarities, a sufficiently strong adhesive force can be obtained as compared with the case where only one polarity is charged as shown in FIG. Therefore, the apparatus according to the first embodiment includes not only those in which the total charge amounts of the positive and negative charging areas S1 and S2 are equal, but also those in which the total charges are substantially equal.
When the total charge amount of the positive charging area S1 and the total charge amount of the negative charging area S2 are not equal, the potential Vg of the conductor 2 is not the ground potential as described above, and one of the polarities Will be biased. For this reason, a difference occurs in the adhesion force acting on the positive and negative charging areas S1 and S2, but it is useful when it is desired to partially differentiate the adhesion force. However, if the difference between the positive and negative charge amounts increases, the adhesion force as a whole decreases, so the total charge amounts of the positive and negative charging areas S1 and S2 must be substantially equal.

In the first embodiment, the first and second ion passage electrodes 5 and 6 having the same area of the ion passage portion are used, and the voltage applied to the first and second ion passage electrodes 5 and 6 is set so that the charging potentials are equal. Thus, the total charge amount of both charging areas S1 and S2 is equal or substantially equal.
However, the areas of the positive and negative charging areas S1 and S2 may not be equal as long as the total charge amount is equal. If an area difference is provided between the charging areas S1 and S2, a non-charging area having a substantially zero potential located between the charging areas S1 and S2 can be offset from the center of the insulating sheet 1. Therefore, when the insulating sheet provided with the electronic device D is attached to the biased position, the electronic device D is charged with the charged charge so that the electronic device D and the non-charged area of the biased position coincide with each other. Can be less affected.

Moreover, as an area adjustment means for adjusting the area of the passage part of the first and second ion passage electrodes 5 and 6 made of the metal mesh, for example, an adjustment plate 10 can be used as shown in FIG. The adjusting plate 10 is made of an insulator and has an opening 10a having a predetermined area in the center. If such an adjusting plate 10 is placed on the first ion passage electrode 5 made of a metal mesh, the opening 10a becomes the area of the passage portion through which ions pass, and the area of the charging area can be controlled.
Since the total charge amount of the charging area can be adjusted by adjusting the area of the charging area in this way, the adjusting plate 10 and the first and second ion passage electrodes 5 and 6 constitute a charge amount adjusting means. Will do.
Further, a plurality of adjustment plates 10 having different opening areas are prepared, and an adjustment plate having a required opening is selected according to the application to adjust the area of the passage portion of the ion passage electrode, thereby increasing the area of the positive or negative charging area. Can also be adjusted.
Instead of preparing a plurality of adjusting plates 10 as the area adjusting means, a plurality of ion passing electrodes having different passage areas are prepared, and necessary ion passing electrodes are selected and used according to the purpose. Also good.

The second embodiment shown in FIG. 8 is a charging device in which an insulating separation member 11 is provided instead of the insulating separation member 7 of the first embodiment. The insulating separation member 11 is an insulating member provided between the first and second ion passage electrodes 5 and 6, and its end face is kept flush with the first and second ion passage electrodes 5 and 6, and the suction passage 7a. Not equipped.
In addition, the power supply units 8 and 9 are provided with switching means that allows the first and second ion passage electrodes 5 and 6 to apply a voltage having a polarity opposite to that applied during charging.
Other configurations are the same as those of the first embodiment. The second embodiment also includes a moving device (not shown) that moves the apparatus main body.
Below, it demonstrates centering on a different point from 1st Embodiment.

In the second embodiment, instead of holding and transporting the insulating sheet by suction force due to negative pressure, the insulating sheet 1 is held and transported by the first and second ion passage electrodes 5 and 6 as described below. I am doing so.
As shown in FIG. 8, the some insulating sheet 1 is laminated | stacked separately from the conductor 2 which is a sticking object. The first and second ion passage electrodes 5 and 6 are opposed to the uppermost surface of the laminated insulating sheets 1, and a positive voltage is applied to the first discharge electrode 3 and the first ion passage electrode 5 by the power supply units 8 and 9. While applying, a negative voltage is applied to the 2nd discharge electrode 4 and the 2nd ion passage electrode 6, and the surface of the insulating sheet 1 laminated | stacked on the top is charged with a positive ion and a negative ion.

As described above, after the insulating sheet 1 is charged, the power supply units 8 and 9 are switched to ground the first and second discharge electrodes 3 and 4 and pass the first and second ions as shown in FIG. A charge having a polarity opposite to that at the time of charging is applied to the electrodes 5 and 6. That is, a negative voltage is applied to the first ion passage electrode 5 and a positive voltage is applied to the second ion passage electrode 6.
As a result, positive charged charges are attracted to the first ion passage electrode 5 having a negative potential, and negative charged charges are attracted to the second ion passage electrode 6 having a positive potential. Is held by the first and second ion passage electrodes 5 and 6. With the insulating sheet 1 held in this manner, the apparatus main body is moved by a moving device (not shown) and moved to the position of the conductor 2 to be attached.
When the insulating sheet 1 is placed on the conductor 2, the charge is removed, and the first and second ion passage electrodes 5 and 6 are separated from the insulating sheet 1 by a predetermined distance and then charged for being attached to the conductor 2. Execute.

In the second embodiment, since the insulating separation member 11 does not include the sheet contact surface 7 b protruding from the first and second ion passage electrodes 5 and 6, the insulating separation member 11 is charged without being in contact with the insulating sheet 1. However, it is the same as in the first embodiment in that positive and negative charging areas S1 and S2 are formed by charging and a strong adhesive force is generated by an electric field based thereon.
Moreover, the point which makes it easy to peel by eliminating the adhesive force with the conductor 2 by static elimination of the insulating sheet 1, and the point which can perform reliable static elimination are the same as 1st Embodiment.

In the first and second embodiments, the first and second ion passage electrodes 5 and 6 are provided to facilitate the control of the charging potential and area of the positive and negative charging areas S1 and S2. Without providing the passing electrodes 5 and 6, the ions generated by the first and second discharge electrodes 3 and 4 may be directly supplied to the insulating sheet 1 to form the positive and negative charging areas S1 and S2.
Even in this case, the adhesion force to the conductor 2 can be increased by making the total charge amount of the positive charging area S1 and the total charge amount of the negative charging area S2 equal or substantially equal.

In the charging device that does not include the first and second ion passage electrodes 5 and 6, the positive charging area S1 is charged by controlling the voltage applied to the first discharge electrode 3 to which the positive voltage is applied. The charge amount can be controlled, and the charge amount in the negative charging area S2 can be controlled by controlling the voltage applied to the second discharge electrode 4 to which a negative voltage is applied.
Therefore, if a voltage control means for controlling the voltage applied to the first and second discharge electrodes 3 and 4 is provided in each of the power supply units 8 and 9, the voltage control means can control the positive and negative charging areas S1 and S2. It becomes a charge amount adjusting means for making the total charge amount equal or substantially equal.

The amount of charge in the charging areas S1 and S2 also changes depending on the distance between the first and second discharge electrodes 3 and 4 and the insulating sheet 1 to be charged.
In the third embodiment shown in FIGS. 9 and 10, height adjusting means 12 and 13 for controlling the height of each of the first and second discharge electrodes 3 and 4 are connected to each of the first and second discharge electrodes 3 and 4, respectively. Can be controlled.
As shown in FIGS. 10 (a) and 10 (b), the higher the heights h1 and h2 of the tip of the first discharge electrode 3 from the surface of the insulating sheet 1, the greater the spread of ions, so the area of the charging area Becomes larger. Therefore, the areas of the positive and negative charging areas S1 and S2 can be controlled by the height control means 12 and 13 shown in FIG. 9, and the total charge amount in each of the charging areas S1 and S2 can be controlled.
Therefore, in the third embodiment, the height adjusting means 12 and 13 serve as charge amount adjusting means for making the total charge amounts of the positive and negative charging areas S1 and S2 equal or substantially equal.
Also, the charge amount adjusting means can be constituted by both the applied voltage control means for controlling the applied voltage to the first and second discharge electrodes 3 and 4 and the height control means 12 and 13.

In each of the above embodiments, a pair of positive and negative charging areas S1 and S2 is formed, but each of the positive and negative charging areas may be composed of a plurality of divided small charging areas. In that case, the total charge amount, which is the total value of the plurality of small charged areas, is made equal to or approximately equal to positive and negative.
Further, the discharge electrode and the charging area do not have to correspond one-to-one. For example, if one charging area is formed by a plurality of discharge electrodes, a large charging area can be easily formed. Alternatively, a plurality of small charged areas of the same polarity can be formed by one discharge electrode by arranging a plurality of passage portions of the ion passage electrode separately to face one discharge electrode.

  In any case, the charging device of the present invention makes the insulating sheet 1 by making the total charge amount of the positive charging area formed on the insulating sheet 1 equal to or substantially equal to the total charge amount of the negative charging area. While being strongly attached to the conductor 2, it can be easily peeled off and pasted.

In the above description, the object to be attached is the conductor 2 such as a metal. However, the object to which the sheet-like insulator charged by this apparatus is attached is such that the charge is smoothly moved by the charged charge and the induced charge is transferred to the surface. It is only necessary to have a degree of electrical conductivity that causes the occurrence of water, and it is not limited to a so-called conductive material. For example, it has been confirmed that sufficient adhesion can be obtained even when the surface resistivity is about 10 ¹¹ [Ω].
The object to be charged may not be an insulating sheet provided with an IC tag, but may be, for example, a sheet-like insulator having information necessary temporarily printed on the surface. The sheet-like insulator can be strongly attached to the object to be pasted by the action of an electric field, and can be peeled off without leaving a trace when printed information is no longer needed.

  It can be applied to affixing and reattaching various sheet-like insulators that do not want to use an adhesive.

DESCRIPTION OF SYMBOLS 1 (Sheet-like insulator) Insulation sheet 3 1st discharge electrode 4 2nd discharge electrode 5 1st ion passage electrode 6 2nd ion passage electrode 7 Insulation separation member 7a Suction passage 7b Sheet contact surface 7c Suction port 8, 9 Power supply part 10 Adjustment plates 12, 13 Height adjustment means S1 Positive charging area S2 Negative charging area

Claims (9)

A discharge electrode to which a positive voltage is applied and a discharge electrode to which a negative voltage is applied,
A positive charging area is formed in the sheet-like insulator to be charged by the discharge electrode to which the positive voltage is applied,
A negative charging area is formed in the sheet-like insulator to be charged by the discharge electrode to which a negative voltage is applied,
A charging device that makes the total charge amount of the positive charging area equal to or substantially equal to the total charge amount of the negative charging area.   Opposite to a discharge electrode to which a positive voltage is applied, and to an ion passage electrode that applies a positive voltage to pass positive ions and a discharge electrode to which a negative voltage is applied, and to apply a negative voltage The charging device according to claim 1, further comprising an ion passage electrode that allows negative ions to pass therethrough.   2. The charging device according to claim 1, further comprising charge amount adjusting means for making the total charge amount of the positive charging area equal to or substantially equal to the total charge amount of the negative charging area.   Opposite to a discharge electrode to which a positive voltage is applied, and to an ion passage electrode that applies a positive voltage to pass positive ions and a discharge electrode to which a negative voltage is applied, and to apply a negative voltage The charging device according to claim 3, further comprising an ion passage electrode that allows negative ions to pass therethrough, wherein the ion passage electrode constitutes the charge amount adjusting unit.   5. The charging device according to claim 3, wherein the charge amount adjusting unit includes the ion passage electrode and an adjustment plate that adjusts an area of a passage portion through which ions pass.   The charging device according to claim 3, wherein the charge amount adjusting means includes height control means for controlling a relative height between the positive discharge electrode and the negative discharge electrode.   The charging device according to claim 3 or 6, wherein the charge amount adjusting means includes voltage control means for controlling a voltage applied to the discharge electrode. With switching means for switching the polarity of the voltage applied to the ion passage electrode to a polarity opposite to the voltage applied to the opposing discharge electrode,
There is provided a moving device that moves the discharge electrode to which the positive voltage is applied and the discharge electrode to which a negative voltage is applied, and the ion passage electrode facing the discharge electrode while maintaining the positional relationship between them. The charging device according to any one of claims 2, 4, and 5.   An insulating separation member made of an insulator is provided between the discharge electrode to which the positive voltage is applied and the discharge electrode to which a negative voltage is applied, and the tip of the insulation separation member is positioned more than the ion passage electrode. The sheet contact surface is provided with a sheet contact surface that protrudes toward the surface of the sheet insulator to be charged and is brought into contact with the surface of the sheet insulator, and the sheet contact surface includes a suction port connected to negative pressure generating means. The charging device according to claim 1, wherein the sheet-like insulator can be held by a suction port.

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