JP2012223917A - Antistatic agent applicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an antistatic agent applicator which suppresses the occurrence of variation in concentration of a replenished antistatic agent, and reliably and efficiently replenishes the antistatic agent.SOLUTION: The antistatic agent applicator includes a replenishing means 30 replenishing the antistatic agent to a storage means 26 for supply. The replenishing means 30 includes: a storage means 44 for replenishing, which stores the antistatic agent for replenishing; a communication flow path 42 communicating the storage means 44 for replenishing with the storage means 26 for supply; a raw liquid supply means 54 supplying the raw liquid of the antistatic agent to the storage means 44 for replenishing; and a dilution liquid supply means 52 supplying a dilution liquid of the antistatic agent to the storage means 44 for replenishing. The raw liquid supplied by the raw liquid supply means 54 is mixed with the dilution liquid supplied by the dilution liquid supply means 52 to form the antistatic agent of a prescribed concentration, and the formed antistatic agent is replenished to the storage means 26 for supply.

Description

  The present invention relates to an antistatic agent coating apparatus for applying an antistatic agent to a web to humidify the web.

  In general, an offset rotary press includes a paper feeding device, a printing unit, a drying device, a cooling device, an antistatic agent coating device, and a folder. The web supplied from the paper feeder is sent to the printing unit for printing. Next, the web is sent to a drying device and subjected to a drying process, and then sent to a cooling device and subjected to a cooling process. Thereafter, the web is sent to an antistatic agent coating apparatus and humidified, and then sent to a folding machine to be folded or cut.

  In the above-described drying apparatus, the web is heated and dried by high-temperature gas (hot air), whereby the solvent in the ink attached to the web is evaporated and the water contained in the web is evaporated. As the moisture evaporates in this way, the web is easily charged due to the generation of static electricity. For this reason, an antistatic agent (for example, a silicon agent having a predetermined concentration) is applied to the web by an antistatic agent coating apparatus, which is a subsequent process, to humidify the web and prevent the web from being charged.

  The conventional antistatic agent coating device is an antistatic agent that is supported between a coating roller that is rotatably supported, a water boat provided below the coating roller, a tank that stores an antistatic agent, and a water boat and a tank. A circulation channel for circulating the agent and a circulation pump disposed in the circulation channel are provided (see, for example, Patent Document 1). The antistatic agent stored in the tank is supplied to the water boat through the circulation channel by the action of the circulation pump. Part of the antistatic agent supplied to the water boat is returned to the tank through the circulation flow path by the action of the circulation pump, whereby a predetermined amount of the antistatic agent is stored in the water boat. A part of the application roller is immersed in an antistatic agent in the water boat. The application roller sucks up the antistatic agent in the water boat by its rotation and applies the antistatic agent to the front surface (or back surface) of the web.

JP 2000-157920 A

  When the antistatic agent is consumed by the application roller as described above and the water level of the antistatic agent in the tank is reduced to a certain level, it is necessary to supply the antistatic agent to the tank. In the conventional antistatic agent coating apparatus, the antistatic agent is manually replenished, and a container such as a bucket is mixed with an antistatic agent stock solution and a diluent (water), and the mixed liquid in the container is mixed. Was put into the tank.

  However, such a conventional antistatic agent coating apparatus has the following problems. First, an operator or the like visually confirms the level of the antistatic agent in the tank, but if the confirmation by the operator or the like is delayed, the tank is empty without the antistatic agent being replenished. There is a risk of becoming. Secondly, when replenishing the antistatic agent, it is necessary to prepare a mixed solution in the container many times and put it into the tank, and the working efficiency is significantly reduced. Third, when the antistatic agent stock solution and the diluent are mixed in the container, the dilution rate varies and it is difficult to keep the concentration of the antistatic agent in the tank constant. For example, if the concentration of the antistatic agent is lower than a predetermined concentration, the charging of the web cannot be effectively prevented, and if the concentration of the antistatic agent is higher than the predetermined concentration, The slipperiness becomes excessive and paper alignment cannot be performed cleanly.

  An object of the present invention is to provide an antistatic agent coating apparatus that can suppress variations in the concentration of the antistatic agent to be replenished and can reliably and efficiently replenish the antistatic agent. is there.

An antistatic agent coating apparatus according to claim 1 of the present invention is a coating means for coating an antistatic agent on a web, a supply storage means for storing an antistatic agent, the supply storage means, and the coating means. A circulation means for circulating the antistatic agent between, and a replenishing means for replenishing the supply storage means with the antistatic agent,
The replenishing means includes a replenishment storage means for storing a replenishment antistatic agent, a communication channel for communicating the replenishment storage means and the supply storage means with each other, and an antistatic treatment for the replenishment storage means. A stock solution supply means for supplying a stock solution of the agent, and a diluent supply means for supplying a diluent for the antistatic agent to the replenishment storage means,
The antistatic agent stock solution supplied by the stock solution supply means and the antistatic agent dilution solution supplied by the diluent supply means are mixed, whereby the antistatic agent having a predetermined concentration is stored in the replenishment storage means. The generated antistatic agent is supplied to the supply storage means through the communication means.

According to a second aspect of the present invention, there is provided the antistatic agent coating apparatus according to the present invention, wherein a water level detecting means for detecting the water level of the antistatic agent stored in the replenishing storage means is provided in relation to the replenishing storage means. The diluent supply means includes a diluent supply source for supplying a diluent, a diluent supply channel for supplying the diluent from the diluent supply source to the replenishment storage means, and the diluent supply flow. A first on-off valve disposed in the path, and first control means for controlling the opening and closing of the first on-off valve,
When the diluted solution of the antistatic agent is supplied to the replenishment storage means, the first control means has a second level detected by the water level detection means that is higher than the first water level from the first water level. The first on-off valve is held in an open state until it rises to the water level.

Further, in the antistatic agent coating apparatus according to claim 3 of the present invention, the stock solution supply means is a stock solution supply source for supplying the stock solution, and a stock solution for supplying the stock solution from the stock solution supply source to the replenishment storage means. A supply flow path, a second on-off valve disposed in the stock solution supply flow path, and a second control means for opening / closing the second on-off valve,
When the stock solution of the antistatic agent is supplied to the replenishment storage means, the second control means holds the second on-off valve in an open state for a predetermined time.

  Further, in the antistatic agent coating apparatus according to claim 4 of the present invention, the replenishing means sets a timer for setting the time during which the second on-off valve is held open by the second control means, And a measuring means for measuring the amount of the stock solution supplied from the stock solution supply source to the replenishing storage means.

According to a fifth aspect of the present invention, in the antistatic agent coating apparatus according to the fifth aspect of the present invention, the supply of the antistatic agent to the supply storage means from the supply storage means and the supply stop are related to the supply storage means. A ball tap for performing the operation, the ball tap from the replenishing storage means in conjunction with the float moving up and down in conjunction with the water level of the antistatic agent stored in the supply storage means The first switching state in which the antistatic agent is supplied to the supply storage means and the switching that is switched to the second switching state in which the supply of the antistatic agent from the replenishment storage means to the supply storage means is stopped. And a valve,
When the water level of the antistatic agent stored in the supply storage means falls from a predetermined water level, the switching valve is held in the first switching state in conjunction with the lowering of the float, and is stored in the supply storage means. When the water level of the obtained antistatic agent rises to the predetermined water level, the switching valve is held in the second switching state in conjunction with the rise of the float.

  According to the antistatic agent coating apparatus of the first aspect of the present invention, the supply storage means is provided with replenishment means for replenishing the antistatic agent, and the replenishment means stores the replenishment antistatic agent. A replenishment storage means; a stock solution supply means for supplying a stock solution of the antistatic agent to the replenishment storage means; and a diluent supply means for supplying a dilute solution of the antistatic agent to the replenishment storage means. Since it is configured in this way, the antistatic agent stock solution supplied by the stock solution supply means and the antistatic agent dilution solution supplied by the diluent supply means are mixed together, thereby preventing the antistatic agent at a predetermined concentration. The agent is generated in the replenishment storage means. As a result, the stock solution of the antistatic agent can be diluted with high accuracy, and variations in the concentration of the antistatic agent to be replenished can be suppressed. Further, since the antistatic agent generated by the replenishment storage means is replenished to the supply storage means through the communication channel, the antistatic agent can be replenished reliably and easily, and the work efficiency can be improved. Can do.

  According to the antistatic agent coating apparatus of the second aspect of the present invention, when the antistatic agent dilution liquid is supplied to the replenishment storage means, the first control means of the dilution liquid supply means includes: The first on-off valve is held open until the water level detected by the water level detection means rises from the first water level to the second water level that is higher than the first water level, so that it is supplied to the replenishment storage means. The amount of the antistatic agent diluent can be controlled accurately and easily.

  According to the antistatic agent coating apparatus of the third aspect of the present invention, when the stock solution of the antistatic agent is supplied to the replenishment storage means, the second control means of the stock solution supply means performs the predetermined time. Since the second on-off valve is held open during this time, the amount of the stock solution of the antistatic agent supplied to the replenishment storage means can be accurately and easily controlled.

  In the antistatic agent coating apparatus according to claim 4 of the present invention, the replenishing means includes a timer for setting a time during which the second on-off valve is held open by the second control means, Metering means for metering the amount of stock solution supplied from the supply source to the replenishment storage means; By using this measuring means to measure the time during which a predetermined amount of stock solution is supplied from the stock solution supply source to the replenishment storage means, this measured time can be set as the set time of the timer. During the set time of the timer set in this way, the second control means holds the second on-off valve so that the predetermined amount of stock solution is supplied from the stock solution supply source to the replenishment storage means. become. Thereby, for example, when changing the concentration of the antistatic agent, the setting time of the timer can be easily changed when changing the supply amount of the stock solution from the stock solution supply source to the replenishment storage means.

  According to the antistatic agent coating apparatus of the present invention, the ball tap for supplying and stopping the supply of the antistatic agent from the replenishing storage means to the supply storage means is provided. When the water level of the antistatic agent stored in the supply storage means decreases, the antistatic agent can be automatically supplied from the supply storage means to the supply storage means, and the antistatic agent can be replenished. It can be done reliably.

It is the schematic which shows the structure of the rotary press by one Embodiment of this invention. It is the schematic which shows the structure of the antistatic agent coating device of FIG. It is a flowchart which shows the flow of the on-off control of the 1st on-off valve and 2nd on-off valve by a controller. It is the schematic which shows the structure of the antistatic agent coating device by other embodiment of this invention.

  Hereinafter, an embodiment of an antistatic agent coating apparatus according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a schematic diagram showing the configuration of a rotary press according to an embodiment of the present invention, FIG. 2 is a schematic diagram showing the configuration of the antistatic agent coating apparatus of FIG. 1, and FIG. It is a flowchart which shows the flow of opening / closing control of 1 on-off valve and 2nd on-off valve.

  Referring to FIG. 1, the illustrated rotary press 2 (offset rotary press) includes a paper feeding device 4, a printing unit 6, a drying device 8, a cooling device 10, an antistatic agent coating device 12, and a folding machine 14. . The paper feeding device 4 is for supplying the web 18 from the roll sheet 16. The printing unit 6 is provided with four printing apparatuses 20, and each printing apparatus 20 performs predetermined multicolor printing on the web 18. In the drying device 8, the printed web 18 is heated and dried with a high-temperature gas (hot air). The cooling device 10 is provided with a plurality of cooling rollers 22, and the web 18 that has been heated and dried is cooled by passing the webs 18 through the plurality of cooling rollers 22. In the antistatic agent coating device 12, the web 18 from which moisture has been removed by heat drying is humidified as described later. In the folding machine 14, the humidified web 18 is folded or cut.

  Next, the configuration of the antistatic agent coating apparatus 12 of this embodiment will be described. Referring to FIG. 2, the illustrated antistatic agent coating apparatus 12 includes an application unit 24 that applies an antistatic agent (for example, a silicon agent having a predetermined concentration) to a web 18, and a supply tank 26 that stores the antistatic agent. (Which constitutes a supply storage means), a circulation means 28 for circulating an antistatic agent between the supply tank 26 and the coating means 24, a supply means 30 for supplying the antistatic agent to the supply tank 26, It has.

  The coating unit 24 includes a coating roller 32 that is rotatably supported and a water boat 34 that is disposed below the coating roller 32. A predetermined amount of antistatic agent is stored in the water boat 34, and a part of the application roller 32 is immersed in the antistatic agent in the water boat 34. The application means 24 is disposed on the front side and the back side of the web 18 (see FIG. 1). In FIG. 2, only the coating means 24 disposed on the surface side of the web 18 is illustrated. The application roller 32 is disposed so as to contact the front surface (or back surface) of the web 18. When the application roller 32 rotates in a predetermined direction, the application roller 32 sucks up the antistatic agent in the water boat 34 by the rotation, and applies the antistatic agent to the front surface (or back surface) of the web 18. Thus, the web 18 is humidified by applying the antistatic agent.

  The supply tank 26 is configured to store an antistatic agent having a predetermined concentration (for example, about 8%), for example, about 30 to 40 L at the maximum. A ball tap 36 is provided inside the supply tank 26. This ball tap 36 is switched to a float 38 that moves up and down in conjunction with the level of the antistatic agent stored in the supply tank 26, and to a first switching state or a second switching state in conjunction with the lifting and lowering of the float 38. And a switching valve 40. The switching valve 40 is disposed at a connection portion between the communication channel 42 (described later) and the supply tank 26. When the switching valve 40 is held in the first switching state, the antistatic agent is supplied from the replenishing tank 44 (described later) to the supplying tank 26, and the switching valve 40 is held in the second switching state. Then, the supply of the antistatic agent from the replenishment tank 44 to the supply tank 26 is stopped. As indicated by a two-dot chain line in FIG. 2, when the water level of the antistatic agent in the supply tank 26 falls below a predetermined water level, the switching valve 40 is held in the first switching state in conjunction with the lowering of the float 38. The As indicated by the solid line in FIG. 2, when the water level of the antistatic agent in the supply tank 26 rises to a predetermined water level, the switching valve 40 is held in the second switching state in conjunction with the rise of the float 38. The

  The circulation means 28 has an outward flow path 46 and a return flow path 48 that allow the supply tank 26 and the water boat 34 to communicate with each other, and a circulation pump 50 disposed in the forward flow path 46. The antistatic agent stored in the supply tank 26 is supplied to the water boat 34 through the forward flow path 46 by the action of the circulation pump 50, and the antistatic agent in the water boat 34 is supplied to the supply tank through the return flow path 48. 26 is returned.

  The replenishment means 30 includes a replenishment tank 44 in which a replenishment antistatic agent is stored, a communication channel 42 that connects the replenishment tank 44 and the supply tank 26 to each other, and a replenishment tank 44 that contains an antistatic agent. Dilution supply means 52 for supplying the dilution liquid and stock solution supply means 54 for supplying the stock solution of the antistatic agent to the replenishing tank 44 are provided.

  The replenishment tank 44 is configured to store the antistatic agent having the predetermined concentration at a maximum of about 5 to 6 liters. Inside the replenishment tank 44, a water level detection sensor 56 (which constitutes a water level detection means) for detecting the water level of the antistatic agent is provided. In the present embodiment, the water level detection sensor 56 includes a main body 58 supported by the upper end of the replenishing tank 44 and first to third electrode bars 60, 62, 64 having different lengths extending downward from the main body 58. And have. The longest first electrode rod 60 extends to the inner bottom surface of the replenishment tank 44, and the second electrode rod 62, which is somewhat shorter than the first electrode rod 60, is provided in the replenishment tank 44. It extends somewhat above the inner bottom surface. The shortest third electrode rod 64 extends somewhat below the upper end of the replenishment tank 44. When the water level of the antistatic agent in the replenishing tank 44 is lower than the tip (electrode part) of the second electrode rod 62, the electrical continuity between the first electrode rod 60 and the second electrode rod 62 is interrupted. Thus, it is detected that the water level of the antistatic agent is the first water level LV1. When the water level of the antistatic agent in the replenishing tank 44 rises and reaches the tip (electrode part) of the third electrode rod 64, the first electrode rod 60 and the third electrode rod 64 are electrically connected. Thus, it is detected that the water level of the antistatic agent is the second water level LV2 higher than the first water level LV1.

  The diluent supply means 52 includes a diluent supply source 66 that supplies a diluent (for example, water), a diluent supply channel 68 that connects the diluent supply source 66 and the replenishing tank 44 to each other, and a diluent supply. A first on-off valve 70 disposed in the flow path 68, and a controller 72 (constituting a first control means) that controls the opening / closing of the first on-off valve 70 based on the detected water level of the water level detection sensor 56. ing. The diluent supply source 66 is composed of, for example, a tank storing water or a water pipe. When the first on-off valve 70 is held open, the diluent from the diluent supply source 66 is supplied to the replenishing tank 44, and when the first on-off valve 70 is held closed, the diluent supply is supplied. Supply of the diluent from the source 66 to the supply tank 44 is stopped. When the first water level LV1 is detected by the water level detection sensor 56, the controller 72 holds the first on-off valve 70 in an open state, and when the water level detection sensor 56 detects the second water level LV2, 1 The on-off valve 70 is kept closed. Therefore, when the antistatic agent in the replenishing tank 44 is almost empty, the controller 72 waits until the water level detected by the water level detection sensor 56 rises from the first water level LV1 to the second water level LV2 (in other words, The first on-off valve 70 is kept open until the replenishment tank 44 is substantially empty to full water). As a result, a predetermined amount (for example, 5 L) of diluent is supplied to the replenishment tank 44.

  The stock solution supply means 54 includes a stock solution tank 74 (which constitutes a stock solution supply source) in which a stock solution of an antistatic agent is stored, a stock solution supply flow path 76 that connects the stock solution tank 74 and the replenishment tank 44 to each other, and a stock solution supply. It has the 2nd on-off valve 78 arrange | positioned in the flow path 76, and the controller 72 (it comprises a 2nd control means) which controls opening / closing of the 2nd on-off valve 78. When the second on-off valve 78 is held open, the stock solution from the stock solution tank 74 is supplied to the replenishing tank 44, and when the second on-off valve 78 is held closed, the stock solution from the stock solution tank 74 is supplied. Is stopped being supplied to the replenishment tank 44. The controller 72 is provided with a timer 80, and this timer 80 counts a predetermined time (for example, 10 seconds) after the second on-off valve 78 is held open. When the first water level LV1 is detected by the water level detection sensor 56, the controller 72 holds the second on-off valve 78 in an open state, and when the count time of the timer 80 reaches the predetermined time, the second on-off valve 78. Is kept closed. Accordingly, when the antistatic agent in the replenishing tank 44 is almost empty, the controller 72 keeps the second on-off valve 78 open for the predetermined time. As a result, a predetermined amount (eg, 400 mL) of the stock solution is supplied to the replenishment tank 44. The predetermined time counted by the timer 80 can be appropriately set according to the supply amount of the stock solution (that is, the concentration of the antistatic agent).

  Next, the flow of opening / closing control of the first opening / closing valve 70 and the second opening / closing valve 78 by the controller 72 will be described with reference to FIG. As described above, when the antistatic agent is applied to the web 18 by the application roller 22, the water level of the antistatic agent in the supply tank 26 gradually decreases. When the water level of the antistatic agent in the supply tank 26 falls below a predetermined water level, the switching valve 40 is held in the first switching state in conjunction with the lowering of the float 38, and the antistatic agent in the replenishing tank 44 communicates. It is supplied to the supply tank 26 through the flow path 42. When the level of the antistatic agent in the supply tank 26 rises to a predetermined level, the switching valve 40 is held in the second switching state in conjunction with the rise of the float 38, and the supply tank 44 transfers to the supply tank 26. The supply of the antistatic agent is stopped.

  As described above, when the antistatic agent in the replenishing tank 44 is supplied to the supplying tank 26 a plurality of times, the water level of the antistatic agent in the replenishing tank 44 is lowered to the first water level LV1. In the state where the water level of the antistatic agent is higher than the first water level LV1, the controller 72 holds the first on-off valve 70 and the second on-off valve 78 in the closed state (step S1). When the first water level LV1 is detected by the water level detection sensor 56 (step S2), the controller 72 opens the first on-off valve 70 and the second on-off valve 78 based on the detection signal from the water level detection sensor 56, respectively. (Step S3), and the timer 80 starts counting the predetermined time (step S4). Thus, the diluent from the diluent supply source 66 is supplied to the replenishment tank 44 through the diluent supply channel 68, and the stock solution from the stock solution tank 74 is supplied to the replenishment tank 44 through the stock solution supply channel 76. (Step S5).

  When the count time of the timer 80 reaches the predetermined time (for example, 10 seconds) (step S6), the controller 72 keeps the second on-off valve 78 closed (step S7), and the count by the timer 80 is stopped (step S6). S8). Thereby, the supply of the stock solution is stopped (step S9). In this way, a predetermined amount (for example, 400 mL) of the stock solution is supplied to the replenishment tank 44.

  Further, when the diluent from the diluent supply source 66 is supplied to the replenishment tank 44, the water level of the mixed liquid (ie, antistatic agent) of the diluent and the stock solution in the replenishment tank 44 is changed to the first level. It rises from the water level LV1 to the second water level LV2. When the second water level LV2 is detected by the water level detection sensor 56 (step S10), the controller 72 holds the first on-off valve 70 in the closed state based on the detection signal from the water level detection sensor 56 (step S11). . Thereby, supply of a dilution liquid is stopped (step S12). In this way, a predetermined amount (for example, 5 L) of diluent is supplied to the replenishment tank 44.

  As described above, a predetermined amount (for example, 5 L) of the diluent is supplied to the replenishing tank 44, and a predetermined amount (for example, 400 mL) of the stock solution is supplied to mix the diluent and the stock solution. An antistatic agent having a predetermined concentration (for example, 8%) is generated. Thereafter, the process returns from step S12 to step S2, and the above-described steps S2 to S12 are repeated.

  Next, another embodiment of the antistatic agent coating apparatus will be described with reference to FIG. FIG. 4 is a schematic view showing a configuration of an antistatic agent coating apparatus according to another embodiment of the present invention. In the present embodiment, components that are substantially the same as those in the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.

  In the antistatic agent coating apparatus 12A of the present embodiment, the water level detection sensor 56A (which constitutes the water level detection means) provided inside the replenishing tank 44 has a first sensor 82 and a second sensor 84. The first sensor 82 is disposed somewhat above the inner bottom surface of the replenishing tank 44 and detects that the water level of the antistatic agent is the first water level LV1. The second sensor 84 is disposed somewhat below the upper end of the replenishing tank 44, and detects that the water level of the antistatic agent is the second water level LV2. The controller 72 controls opening and closing of the first on-off valve 70 and the second on-off valve 78 based on detection signals from the first sensor 82 and the second sensor 84, respectively, as in the above-described embodiment.

  The stock solution supply flow path 76 is provided with a measuring cylinder 86 (which constitutes a measuring means), and a part of the stock solution in the stock solution tank 74 flows into the measuring cylinder 86. The measuring cylinder 86 is provided with a scale 88 indicating the amount of stock solution stored therein. The scale 88 is attached at intervals of 10 mL, for example. The measuring cylinder 86 is used when setting a predetermined time counted by the timer 80. For example, when changing the concentration of the antistatic agent, when changing the amount of stock solution supplied from the stock solution tank 74 to the replenishing tank 44 from 400 mL to 480 mL, the second on-off valve 78 is manually opened. Hold. The time from when the water level of the stock solution in the measuring cylinder 86 starts to decrease until the stock solution in the measuring cylinder 86 decreases by the scale of 500 mL is measured, and this measured time (for example, 12 seconds) is counted by the timer 80. The predetermined time (that is, the set time of the timer 80) is set. The controller 72 keeps the second on-off valve 78 open for the set predetermined time, so that the amount of stock solution supplied from the stock solution tank 74 to the replenishing tank 44 becomes 480 mL. In this way, the concentration of the antistatic agent can be easily changed.

  As mentioned above, although various embodiment of the antistatic agent coating device according to this invention was described, this invention is not limited to this embodiment, Various deformation | transformation thru | or correction | amendment are possible, without deviating from the scope of this invention. is there.

  In each of the above embodiments, the first control unit of the diluent supply unit 52 and the second control unit of the stock solution supply unit 54 are configured by one controller 72, but may be configured by separate controllers.

  In each of the above embodiments, the case where the antistatic agent coating device 12 (12A) is applied to an offset rotary press has been described. However, the antistatic agent coating device 12 (12A) may be applied to, for example, other types of printing machines.

2 Rotary press 12, 12A Antistatic agent application device 18 Web 24 Application means 26 Supply tank 28 Circulation means 30, 30A Supply means 36 Ball tap 38 Float 40 Switching valve 42 Communication channel 44 Supply tank 52 Diluent supply means 54 Stock solution Supply means 56, 56A Water level detection sensor 86 Weighing cylinder

Claims (5)

Application means for applying the antistatic agent to the web, supply storage means for storing the antistatic agent, circulation means for circulating the antistatic agent between the supply storage means and the application means, and the supply Replenishing means for replenishing the storage means with antistatic agent,
The replenishing means includes a replenishment storage means for storing a replenishment antistatic agent, a communication channel for communicating the replenishment storage means and the supply storage means with each other, and an antistatic treatment for the replenishment storage means. A stock solution supply means for supplying a stock solution of the agent, and a diluent supply means for supplying a diluent for the antistatic agent to the replenishment storage means,
The antistatic agent stock solution supplied by the stock solution supply means and the antistatic agent dilution solution supplied by the diluent supply means are mixed, whereby the antistatic agent having a predetermined concentration is stored in the replenishment storage means. And the generated antistatic agent is supplied to the supply storage means through the communicating means. In relation to the replenishment storage means, a water level detection means for detecting the water level of the antistatic agent stored in the replenishment storage means is provided, and the dilution liquid supply means is a dilution liquid supply source for supplying a dilution liquid. A diluent supply channel for supplying the diluent from the diluent supply source to the replenishment storage means, a first on-off valve disposed in the diluent supply channel, and the first on-off valve First control means for controlling opening and closing,
When the diluted solution of the antistatic agent is supplied to the replenishment storage means, the first control means has a second level detected by the water level detection means that is higher than the first water level from the first water level. The antistatic agent coating apparatus according to claim 1, wherein the first on-off valve is held in an open state until the water level rises. The stock solution supply means includes a stock solution supply source for supplying a stock solution, a stock solution supply channel for supplying the stock solution from the stock solution supply source to the replenishment storage means, and a second open / close disposed in the stock solution supply channel. And a second control means for controlling opening and closing of the second on-off valve,
The second control means holds the second on-off valve in an open state for a predetermined time when the stock solution of the antistatic agent is supplied to the replenishment storage means. The antistatic agent coating apparatus as described.   The replenishing means includes a timer for setting a time during which the second on-off valve is held open by the second control means, and an amount of the stock solution supplied from the stock solution supply source to the replenishment storage means. The antistatic agent coating apparatus according to claim 3, further comprising a weighing unit for weighing. In relation to the supply storage means, a ball tap for supplying and stopping the supply of the antistatic agent from the supply storage means to the supply storage means is provided, and the ball tap is connected to the supply storage means. A float that moves up and down in conjunction with the water level of the stored antistatic agent, and a first switching state in which the antistatic agent is supplied from the replenishment storage means to the supply storage means in conjunction with the elevation of the float And a switching valve that is switched to a second switching state in which the supply of the antistatic agent from the supply storage means to the supply storage means is stopped,
When the water level of the antistatic agent stored in the supply storage means falls from a predetermined water level, the switching valve is held in the first switching state in conjunction with the lowering of the float, and is stored in the supply storage means. The switching valve is held in the second switching state in conjunction with the rise of the float when the water level of the antistatic agent is increased to the predetermined water level. The antistatic agent coating device described in 1.

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