JP2002126679A - Apparatus and method for cleaning metallic plate and metallic plate processing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely clean a metallic plate without causing deterioration in mechanical strength of the metallic plate and melting of the metallic plate caused by the staying of processing solution. SOLUTION: Having discharged etching processing solution from a processing tank 16, aluminum web 14 is held by pressing devices 22 and 24 which are arranged at most upstream and downstream portions of etching processing equipment 12. Then, cleaning solution is delivered to the web 14 from cleaning sprays 36 to start the cleaning of the web 14. Then, a moving roll 30 arranged between the pressing device 22 and the tank 16 is moved to generate a sagging portion 14S for the web 14, a specific carrier roll 32 is rotated in the forward or the backward direction so that the cleaning solution is applied to the entire web 14 to surely clean the web 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a metal plate cleaning apparatus,
The present invention relates to a method for cleaning a metal plate and a method for processing a metal plate, and more particularly, to a method for manufacturing a lithographic printing plate, which is applied to remove an etching treatment liquid from an aluminum web, for example.

[0002]

2. Description of the Related Art As a metal plate cleaning apparatus and a metal plate cleaning method for removing unnecessary processing liquid after treating a metal plate with a processing liquid, an etching liquid is removed from an aluminum web in a process of manufacturing a lithographic printing plate. A description will be given of a cleaning apparatus and a cleaning method for removal, taking as an example.

In recent plate making methods (including an electrophotographic plate making method), a lithographic printing plate such as a photosensitive printing plate or a heat-sensitive printing plate is widely used in order to facilitate automation of a plate making process. The lithographic printing plate generally sends out and transports a support (aluminum web or aluminum strip) such as a sheet-like or coil-like aluminum plate in order, for example, graining, anodic oxidation, silicate treatment, and other chemical conversion treatments. It is manufactured by performing surface treatment alone or in an appropriate combination, then coating and drying a photosensitive layer or a heat-sensitive layer (hereinafter, these are collectively referred to as a “coating film”), and then cut into a desired size. You.

The lithographic printing plate is subjected to plate making processes such as exposure, development, gumming, and the like, and is set in a printing machine. By applying ink, characters, images, and the like are printed on paper.

In the manufacturing process of a lithographic printing plate, in order to roughen the surface of an aluminum strip as a support, an etching treatment is performed by immersing the aluminum strip in a predetermined etching solution stored in a processing tank. However, in certain cases, it is necessary to stop the etching process and to remove the etching solution attached to the aluminum strip to prevent the local progress of etching.

FIG. 7 shows such an aluminum strip surface treatment apparatus 112 (Japanese Patent Publication No. Hei 8-986).
Reference).

In the surface treatment device 112, when the etching process is stopped, the aluminum roller 114 is sandwiched by the pressing device 116, and then the moving roller 118 is moved to the position shown in FIG.
By moving to the position shown by the two-dot chain line, slack can be created in the etching bath 120. Then, in this state, the cleaning liquid is discharged from the cleaning spray 122 to clean the aluminum strip 114. At this time, a gap is formed between the aluminum strip 114 and the transport roller 124, so that the etching solution is not trapped (stagnation), so that the running aluminum strip 114 can be stopped immediately. It has become.

However, in the configuration shown in FIG. 7, when the amount of slack of the aluminum strip 114 is not sufficient, for example, the aluminum strip 114 and the transport roller 1
24, a necessary gap cannot be formed, and the etching treatment liquid may stay. Therefore, if the etching treatment liquid is left standing in this state, the aluminum strip 114 is locally etched and thinned, and the mechanical strength of the aluminum strip 114 is reduced or blown. There was a curse.

Furthermore, recently, in order to enhance the etching effect, there is a case where a plurality of conveying rollers are alternately arranged vertically and an aluminum strip is sequentially wound around these conveying rollers to form a zigzag conveying path. . In this case, even if the aluminum strip is sagged with the same configuration as that of FIG. 7, the entire aluminum strip cannot be sagged. In some cases, it is not possible to form a gap required to prevent the stagnation.
For this reason, between the transport roller and the aluminum strip in the portion where the slack does not occur, even after the cleaning, the etching treatment liquid stays and the etching progresses locally, and the mechanical strength of the aluminum strip is reduced. May cause fusing.

In particular, in recent years, from the viewpoint of improving the production efficiency of a lithographic printing plate, the tension applied to an aluminum strip to increase the transport speed has been increased, or a high-concentration and high-temperature etching solution has been used. Things may be used. Under such conditions, even when the etching treatment liquid slightly stays, local etching progresses, which may lead to a decrease in mechanical strength or melting of the aluminum strip.

[0011]

SUMMARY OF THE INVENTION In consideration of the above fact, the present invention provides a metal plate cleaning apparatus and a metal plate cleaning method which can surely clean a metal plate without causing a decrease in mechanical strength or fusing due to stagnation of a processing solution. It is another object of the present invention to provide a metal plate processing method that can surely wash a metal plate without causing a reduction in mechanical strength or a fusing of the metal plate due to a stagnation of a processing liquid after performing a predetermined process on the metal plate.

[0012]

According to the first aspect of the present invention, there is provided a transfer means for transferring a metal plate in a fixed transfer direction, a fixing means capable of fixing at least two positions of the metal plate,
Cleaning means for cleaning the metal plate located between the fixing means with a cleaning liquid, relaxation means for relaxing the metal plate located between the fixing means, and fixing the metal plate relaxed by the relaxation portion; Moving means for partially moving between the means.

Therefore, in the normal state, the metal plate is transported in a constant transport direction by the transport means. By this transport, it becomes possible to continuously perform various processes on the metal plate.

[0014] At least two portions of the metal plate can be fixed by the fixing means while the conveyance by the conveyance means is stopped. Since the cleaning means is provided between the fixing means, it is possible to clean the metal plate and remove deposits (such as a processing solution) adhered to the surface of the metal plate.

Further, the metal plate located between the fixing means is
It can be relaxed by the relaxation means. Therefore, for example, it is possible to clean the metal plate by forming a gap between the metal plate and another member or the like disposed between the fixing means so that the cleaning liquid can reliably spread to the surface of the metal plate. Become.

Further, the relaxed metal plate can be partially moved between the fixing means by the moving means. Therefore, even when the gap formed between the other member and the metal plate is narrow, or when the metal plate is in contact with the other member, the metal plate is moved in this manner. Thus, a necessary gap is formed between the metal plate and all the other members, and the metal plate can be reliably cleaned. For this reason, it is possible to prevent the progress of the reaction due to the local treatment liquid remaining. Also, even when the cleaning liquid does not spread over the entire metal plate, the metal plate can be moved to a position where the cleaning liquid is used to move the metal plate. it can.

In the first aspect of the present invention, the relaxing means is not particularly limited. For example, a configuration may be employed in which at least one of the fixing means is moved in a direction approaching each other. Wherein the relaxing means is a moving roll which is arranged so that the metal plate between the fixing means is partially wound, and is movable in a direction to reduce a path length of the metal plate. It may be configured. That is, since the moving roll moves to reduce the path length of the metal plate, the path length of the metal plate becomes shorter than the length of the metal plate existing between the solid means. The slack can be configured.

According to a third aspect of the present invention, in the first or second aspect of the invention, the transporting means includes a transport roll disposed between the fixing means and transporting the metal plate. Wherein the moving means is configured to enable the transport roll to rotate forward and reverse.

Therefore, in the region between the fixing means, the metal plate can be transported by the transport roll. Also,
Since the transport roll can rotate forward and reverse,
The metal plate can be partially moved by the forward rotation or the reverse rotation.

In addition, since the transport roll can be rotated forward and backward, the transport roll can be used as both the transport unit and the moving unit, so that the number of components does not increase.

According to a fourth aspect of the present invention, in the first to third aspects of the present invention, the fixing means includes a nip roll capable of holding the metal plate with the transport roll. It is characterized by comprising.

By pinching the metal plate by the nip roll, a specific portion of the metal plate (the pinched portion) can be prevented from moving. For example, when a plurality of transport rolls are provided, the metal plate is moved by a specific transport roll, and for other transport rolls, the metal plate is sandwiched between the nip rolls to be immovable.
It is possible to move only a desired portion of the metal plate, and it is possible to finely set a moving range and a moving amount of the metal plate.

According to a fifth aspect of the present invention, in the first aspect of the present invention, there is provided a processing tank for receiving the cleaning solution for cleaning the metal plate.

This processing tank makes it possible to collect the cleaning liquid without scattering it to the surroundings.

According to a sixth aspect of the present invention, in the fifth aspect of the invention, the processing tank is capable of storing a processing liquid for processing the metal plate.

Therefore, by immersing the metal plate in the processing solution in the processing tank, various types of processing can be performed on the metal plate. In addition, the metal plate can be processed while being conveyed by the conveying means, and continuous processing can be performed. When cleaning the metal plate, if the cleaning is performed after discharging the processing liquid from the processing tank, the cleaning liquid can be received by the processing tank.

[0027] In the invention according to claim 7, a fixing step of fixing at least two places of the metal plate, a cleaning step of cleaning the metal plate located between the portions fixed by the fixing step with a cleaning liquid, A relaxing step of relaxing the metal plate located between the parts fixed by the fixing step, and a moving step of partially moving the metal plate relaxed by the relaxing step between the parts fixed by the fixing step And the following.

When a metal plate is cleaned by this metal plate cleaning method, first, at least two portions of the metal plate are fixed in a fixing step. In this state, the cleaning step is performed, and the metal plate located between the portions fixed by the fixing step can be cleaned.

In the relaxing step, the metal plate located between the parts fixed in the fixing step is relaxed. This makes it possible to form a gap between the metal plate and another member or the like disposed between the fixed portions so that the cleaning liquid can reliably spread to the surface of the metal plate, and the metal plate can be cleaned. Becomes

Further, the relaxed metal plate can be partially moved between the fixing means by the moving step. Therefore, even when the gap formed between the other member and the metal plate is narrow, or when the metal plate is in contact with the other member, the metal plate is moved in this manner. Thus, a necessary gap is formed between the metal plate and all the other members, and the metal plate can be reliably cleaned. For this reason, it is possible to prevent the progress of the reaction due to the local treatment liquid remaining. Further, even in a case where the cleaning liquid does not spread over the entire metal plate, the metal plate can be moved to a position where the cleaning liquid is cleaned by moving the metal plate, and the entire metal plate can be reliably cleaned.

The relaxation step may be performed prior to the cleaning step, or the cleaning step may be performed once, then the relaxation step may be performed, and then the cleaning step may be performed. Further, the washing step and the relaxation step may be performed in parallel.

The moving step may be performed in parallel with the cleaning step, or the moving step may be performed after the cleaning step is temporarily stopped, and the cleaning step may be performed again.

[0033] In the invention according to claim 8, the metal plate is partially immersed in the processing liquid in the processing tank and is transported in a certain transport direction while the metal plate is partially immersed in the processing liquid. A discharging step of discharging the processing liquid, a fixing step of fixing the metal plate before and after the processing tank at the time of stop, and a cleaning step of cleaning the metal plate positioned between the parts fixed by the fixing step with a cleaning liquid. A relaxing step of relaxing a metal plate located between the parts fixed by the fixing step, and partially moving the metal plate relaxed by the relaxing step between the parts fixed by the fixing step And a moving step.

In this metal plate processing apparatus, in the transfer step, the metal plate is transferred in a certain transfer direction while being partially immersed in the processing liquid in the processing tank. Thus, various processes on the metal plate can be continuously performed.

In this metal plate processing apparatus, the metal plate can be washed to remove the processing liquid adhering thereto. In this case, first, after the transport step is stopped, in the discharging step, the processing liquid is discharged from the processing tank.

Next, at least two portions of the metal plate are fixed in a fixing step. In this state, the cleaning step is performed, and the metal plate located between the portions fixed by the fixing step can be cleaned.

In the relaxing step, the metal plate located between the parts fixed in the fixing step is relaxed. This makes it possible to form a gap between the metal plate and another member or the like disposed between the fixed portions so that the cleaning liquid can reliably spread to the surface of the metal plate, and the metal plate can be cleaned. Becomes

Further, the relaxed metal plate can be partially moved between the fixing means by the moving step. Therefore, even when the gap formed between the other member and the metal plate is narrow, or when the metal plate is in contact with the other member, the metal plate is moved in this manner. Thus, a necessary gap is formed between the metal plate and all the other members, and the metal plate can be reliably cleaned. For this reason, it is possible to prevent the progress of the reaction due to the local treatment liquid remaining. Further, even in a case where the cleaning liquid does not spread over the entire metal plate, the metal plate can be moved to a position where the cleaning liquid is cleaned by moving the metal plate, and the entire metal plate can be reliably cleaned.

As in the seventh aspect of the present invention, the relaxation step may be performed prior to the cleaning step, or may be performed once after performing the cleaning step, then performing the relaxation step, and further performing the cleaning step. Good. Further, the washing step and the relaxation step may be performed in parallel.

The moving step may be performed in parallel with the cleaning step, or the moving step may be performed after the cleaning step is temporarily stopped, and then the cleaning step may be performed again.

[0041]

FIG. 1 shows, as an example of a metal plate processing apparatus according to an embodiment of the present invention, an etching processing apparatus 12 for performing an etching process on an aluminum web 14 which is a support of a lithographic printing plate. It is shown. The etching apparatus 12 constitutes a part of a production line for producing a lithographic printing plate, and the aluminum web 14 is transported in the direction of arrow A by a transport device (not shown).

The etching apparatus 12 has a processing tank 16 in which an etching solution 20 is stored. The processing tank 16 is divided into a plurality (four in this embodiment, a first processing tank 16A, a second processing tank 16B, a third processing tank 16C, and a final processing tank 16D) by a partition wall 18. Each of the processing tanks may store the etching solution 20 having the same composition or may store the etching solution 20 having a different composition.

The processing tank 16 is provided with a discharge port (not shown) so that the etching processing liquid 20 can be discharged as required.

Press units 22 and 24 are arranged at the most upstream and downstream parts of the etching apparatus 12, respectively. By driving the pressing devices 22 and 24 in a state where the transport of the aluminum web 14 is stopped, the aluminum web 14 can be sandwiched and fixed in the thickness direction.

Two fixed rolls 26 and 28 and a moving roll 30 between the fixed rolls 26 and 28 are disposed between the press device 22 and the processing tank 16 on the upstream side. Is fixed roll 26, moving roll 3
0 and the fixed roll 28 are wound in this order.

The movable roll 30 is movable between a normal position shown in FIGS. 1 and 2 and a relaxed position shown in FIGS. By moving to the relaxation position, the path of the aluminum web 14 between the press devices 22 and 24 is shortened, and the aluminum web 14 can be caused to have a predetermined slack.

A plurality of transport rolls 32 (in this embodiment, first transport rolls 32A to 32A)
An eighth transport roll 32H) is provided in order. These transport rolls 32 are arranged alternately up and down.
As can be seen from FIG. 3, the zigzag transport path is configured. This makes it possible to configure a long transport path in a narrower space than when a linear transport path is configured.

[0048] These transport rolls 32 are arranged two by two from the upstream side in order from the first processing tank 16A to the final processing tank 16D.
C, 32E and 32G are located above the processing tank 16, and the lower transport rolls 32B, 32D, 32F and 32H are located near the bottom of the processing tank 16. Accordingly, as can be seen from FIG. 1, in a state where the etching treatment liquid 20 is stored in the treatment tank 16, the lower transport rolls 32B, 32D, 32F, 3
The aluminum web 14 is immersed in the etching solution 20 near 2H.

Each of the transport rolls 32 can rotate (forward rotation and reverse rotation) independently of each other by receiving a driving force from a driving source such as a motor (not shown). The web 14 can be moved in the transport direction or the reverse direction. Accordingly, the transport roll 32 serves as both the transport unit and the moving unit of the present invention. Therefore, the number of components can be reduced as compared with the case where these are provided as separate members.

The transport rolls 32A, 32 arranged on the upper side
Nip rolls 34 are provided near C, 32E, and 32G. Each nip roll 34 can sandwich the aluminum web 14 between the corresponding transport rolls 32A, 32C, 32E, and 32G (see FIG. 2). In the sandwiched state, the movement of the aluminum web 14 is localized. Can be blocked.

A support roller 38 is provided between the most downstream transport roll 32H and the press device 24,
The aluminum web 14 is supported so as not to be inadvertently brought into contact with the processing tank 16 or the like.

A cleaning spray 36 is arranged near each transport roll 32. A cleaning liquid can be discharged from these cleaning sprays 36 onto the aluminum web 14 for cleaning.

Next, a method for etching the aluminum web 14 using the etching apparatus 12 of the present embodiment and a method for cleaning the aluminum web 14 will be described.

When etching the aluminum web 14, an etching solution 20 is stored in a processing tank 16 as shown in FIG. In addition, the press devices 22, 2
4 and the nip roll 34 are opened, and the aluminum web 1
4. Do not pinch. When the aluminum web 14 is transported in the direction of arrow A by the transport device and the transport roll 32 (not shown), the aluminum web 14 is immersed in order from the first processing tank 16A to the final processing tank 16D, and the etching process proceeds. 14 can be etched (transportation step).

When the transport of the aluminum web 14 is stopped, it is necessary to prevent the progress of the etching of the part immersed in the etching solution 20. In this case, first, the etching solution 20 is discharged from all the processing tanks 16 (a discharging step). Then, the press devices 22 and 24 and the nip roll 34 are closed, and the aluminum web 14 is clamped (fixing step). As a result, the aluminum web 14 is fixed and does not move carelessly. At the same time,
The cleaning liquid is discharged from the cleaning spray 36 to the aluminum web 14 to start cleaning the aluminum web 14 (cleaning step).
At this time, since the processing tank 16 receives the cleaning liquid after cleaning,
The washing liquid can be collected without being scattered around.

Further, after the cleaning is started (or simultaneously with the cleaning), the moving roll 30 is lowered as shown by a solid line in FIG. Accordingly, the length of the aluminum web 14 existing between the press devices 22 and 24 is changed from the fixed roll 26 to the moving roll 30, the fixed roll 28, the transport roll 32, and the support roll 38. Since the length of the path 14 (the length at which the aluminum web 14 can be wound around) becomes short, the slack portion 14
S occurs (relaxation step).

In this state, the slack portion 14S is moved to a desired position by rotating all or part of the transport roll 32 forward or backward (moving step). For example, FIG.
, The lower transport rolls 32B, 32D, 32
For each of F and 32H, a sufficient gap into which the cleaning water flows can be formed between the F and 32H. Also, as shown in FIG.
The aluminum web 14 is moved to the downstream side (the right side in FIG. 5) in the inside, and conversely, as shown in FIG.
The aluminum web 14 can be moved to the upstream side. For this reason, the cleaning liquid can be spread over the entire aluminum web 14 and the cleaning can be reliably performed. For example, the lower transport rolls 32B, 32D, 32F,
32H and the gap formed between the aluminum web 14 is small, or the aluminum web 14 is
In the case where close contact is exerted between 2D, 32F, and 32H due to the action of close contact, the transport rolls 32B, 3F
The cleaning water may not reach the aluminum web 14 near 2D, 32F, and 32H. Even in such a case, by moving the aluminum web 14 back and forth,
The gap between 2B, 32D, 32F, 32H and the aluminum web 14 can be widened, or a portion where the washing water has not reached can be moved to a position where it reaches. Also, the upper transport roll 32
Aluminum web 14 near A, 32C, 32E, 32G
Also, depending on the position of the cleaning spray 36, the cleaning water may not reach. Even in such a case, by moving the aluminum web 14 back and forth, it is possible to move a portion where the cleaning water has not reached to a position where the cleaning water reaches (for example, in the vicinity of the cleaning spray 36).

Table 1 shows the transfer step of the present invention, that is,
An example of the operation and the amount of slack of each transport roll 38 when moving the slack portion of the aluminum web 14 back and forth as described above is shown by numerical values. Hereinafter, the present embodiment will be described in more detail with reference to the numerical values shown in Table 1, but it is needless to say that the present invention is not limited to those indicated by these numerical values.

[0059]

[Table 1]

In this example, the moving roll 30 is lowered to form the slack portion 14S having a slack amount of 720 mm.

First, in the first stage operation, each transport roll 32 is rotated forward at the set speed shown in the table. At this time, between the second transport roll 32B and the third transport roll 32C, between the fourth transport roll 32D and the fifth transport roll 32E, and between the sixth transport roll 32F and the seventh transport roll 32G.
Since there is a speed difference of 5 m / min between
The slack portion 14S of the aluminum web 14 is dispersed, and as shown in FIG. 4, a uniform slack amount is 180 mm in all of the first processing tank 16A to the final processing tank 16D. That is, all the lower transport rolls 32B, 32D, 32
A gap necessary for the washing water to flow is formed between the F, 32H and the aluminum web 14.

Next, as a second stage operation, the first transport roll 32A and the eighth transport roll 32H are stopped,
The transport rollers 32B to seventh transport roller 32G are rotated forward at 5 m / min. As a result, the aluminum webs 14 are sequentially sent to the downstream side as a whole, so that the slack amount in the first processing tank 16A becomes 0 mm. The amount of slack in the second processing tank 16B and the third processing tank 16C is 180 mm.
, But the amount of slack in the final processing tank 16D is 36
Increase to 0 mm. Thereby, the eighth transport roll 32H
The gap between the aluminum web 14 and the aluminum web 14 is also large, so that the washing water easily flows in, and the washing can be performed more effectively. Further, even when there is an area where the cleaning water does not partially reach the aluminum web 14 (for example, the upper transport roll 32
A, 32C, 32E, and 32G) and the aluminum web 14 as a whole are sequentially sent to the downstream side, so that such a region can be moved to a position where the washing water reaches and washed.

Next, as a third stage operation, the first transport roll 32A and the eighth transport roll 32H are stopped,
The conveying rolls 32B to 32G are reversely rotated at 5 m / min. As a result, the aluminum webs 14 are sent sequentially upstream as a whole, so that the slack amount in the final processing tank 16D becomes 0 mm. The amount of slack in the second processing tank 16B and the third processing tank 16C is 180 mm.
, But the amount of slack in the first processing tank 16A is 36
Increase to 0 mm. Thereby, the second transport roll 32B
The gap between the aluminum web 14 and the aluminum web 14 is also large, so that the washing water easily flows in, and the washing can be performed more effectively. Also, as in the case of the second stage operation, even when there is an area where the cleaning water does not partially reach the aluminum web 14, the aluminum web 14 is sent to the upstream side in order as a whole,
Such an area can be moved to a position where the cleaning water reaches, and can be cleaned.

The second-stage operation and the third-stage operation may be repeated as necessary, or may be performed only once each time the aluminum web 14 can be sufficiently cleaned.

When the cleaning of the aluminum web 14 is completed, the nip roll 34 is opened. Next, the moving roll 30 is raised to eliminate the slack portion, and the entire aluminum web 14 is provided with tension, thereby returning the aluminum web 14 to the state before the stop of the conveyance. Finally, the pressing device 22 is opened, and the fixing of the aluminum web 14 is released. As described above, since all the fusing prevention operations in the present invention are completed, for example, the etching processing liquid 20 is again stored in the processing tank 16 and the aluminum web 14 is transported by a transport device (not shown).
The etching process can be performed continuously.

As described above, in the etching apparatus 12 according to the present embodiment, the slack portion 14S is generated in the aluminum web 14 between the portions fixed by the press device 22, and the slack portion 14S is partially removed. By moving the cleaning solution, the cleaning water is surely spread over the entire aluminum web 14 and the etching treatment liquid is prevented from remaining on the surface of the aluminum web 14. For this reason,
While the lithographic printing plate production line is stopped, the progress of etching of the aluminum web 14 due to the remaining etching solution can be prevented, and a reduction in mechanical strength and fusing due to thinning of the aluminum web 14 can be reliably prevented.

In particular, recently, from the viewpoint of enhancing the etching effect and improving the production efficiency of the lithographic printing plate, the transport speed is increased by increasing the tension applied to the aluminum strip, or the high concentration of the etching solution is used. -High-temperature materials may be used (for example, specific gravity of 1.3 to 1.3).
1.5, conductivity (electric conductivity) 0.2 to 0.4 S / c
m, 40 to 80 ° C., especially when the concentration of NaOH is 25
Etching treatment liquid having an Al concentration of 6 to 8% by mass). Even in such a case, since the cleaning solution can be spread over the entire aluminum web 14 and the etching treatment solution can be reliably removed, a decrease in mechanical strength and fusing due to the thinning of the aluminum web 14 can be prevented.

In the above description, the etching apparatus 12 can be used to perform both the etching process on the aluminum web 14 and the cleaning of the aluminum web 14. as,
The etching process on the aluminum web 14 does not necessarily have to be included. That is, the etching process and the cleaning for the aluminum web 14 may be performed by preparing separate apparatuses, respectively. In this case, the cleaning apparatus having the same configuration as the etching processing apparatus 12 is used. The web 14 may be cleaned.

The treatment applied to the aluminum web 14 is not limited to the etching treatment. If the treatment liquid adheres to the surface of the aluminum web 14, the present invention is applied, and the adhesion treatment liquid is surely applied to the aluminum web 14. It can be removed from the web 14.

The object to be treated is not limited to the aluminum web 14, but may be various metals to be subjected to various treatments by a treatment liquid.

In this embodiment, the aluminum web 14 is transported in a zigzag manner by alternately arranging a plurality of transport rollers 32, and the processing vessel 16 is divided into four processing vessels. Although the processing is described as an example, for example, the processing tank may be configured with only one layer, or the aluminum web 14 may be transported in a substantially horizontal direction.

[0072]

According to the first aspect of the present invention, the transporting means for transporting the metal plate in a fixed transporting direction, the fixing means capable of fixing at least two places of the metal plate, and the position between the fixing means. Cleaning means for cleaning the metal plate to be cleaned with a cleaning liquid, relaxation means for relaxing the metal plate located between the fixing means, and partially fixing the metal plate relaxed by the relaxation portion between the fixing means. Since the cleaning device has the moving means for moving the metal plate, the metal plate is cleaned so that the cleaning liquid can surely reach the surface of the metal plate, and the reaction progress due to the local remaining of the processing liquid can be prevented.

In the invention according to claim 7, the fixing step of fixing at least two places of the metal plate, the cleaning step of cleaning the metal plate located between the portions fixed by the fixing step with a cleaning liquid, A relaxing step of relaxing the metal plate located between the parts fixed by the fixing step, and a moving step of partially moving the metal plate relaxed by the relaxing step between the parts fixed by the fixing step Therefore, the metal plate is cleaned so that the cleaning liquid can reliably spread to the surface of the metal plate, and the reaction progress due to the local remaining of the processing liquid can be prevented.

According to the present invention, the metal plate is partially immersed in the processing liquid in the processing tank and is transferred in a certain transfer direction while being immersed in the processing liquid. A discharging step of discharging the processing liquid, a fixing step of fixing the metal plate before and after the processing tank at the time of stop, and a cleaning step of cleaning the metal plate positioned between the parts fixed by the fixing step with a cleaning liquid. A relaxing step of relaxing a metal plate located between the parts fixed by the fixing step, and partially moving the metal plate relaxed by the relaxing step between the parts fixed by the fixing step And a moving step, so that various treatments on the metal plate can be performed continuously, and at the time of cleaning, the metal plate is cleaned so that the cleaning liquid is surely spread over the surface of the metal plate. It can be prevented and the reaction progress by remaining local processing solution.

[Brief description of the drawings]

FIG. 1 is a side view showing a schematic configuration of an etching apparatus according to an embodiment of the present invention.

FIG. 2 is a side view showing a state where a fixing step is being performed in the etching apparatus according to the embodiment of the present invention.

FIG. 3 is a side view showing a state in which a relaxation step is being performed in the etching apparatus according to the embodiment of the present invention.

FIG. 4 is a side view showing a state where a moving step is being performed in the etching processing apparatus according to the embodiment of the present invention;

FIG. 5 is a side view showing a state where a moving step is performed in the etching apparatus according to the embodiment of the present invention.

FIG. 6 is a side view showing a state where a moving step is being performed in the etching apparatus according to the embodiment of the present invention;

FIG. 7 is a side view showing a schematic configuration of a conventional etching apparatus.

[Explanation of symbols]

 Reference Signs List 12 etching apparatus (metal plate processing apparatus) 14 aluminum web (metal plate) 16 processing tank 20 etching processing liquid (processing liquid) 22 press apparatus (fixing means) 24 press apparatus (fixing means) 30 moving roll (relaxing means) 32 Transport roll (moving means, transport means) 34 Nip roll (fixing means) 36 Cleaning spray (cleaning means)

Continuation of the front page F term (reference) 2H114 AA04 AA14 DA04 EA02 EA09 GA04 3B116 AA08 AB16 AB37 AB42 BB02 BB03 BB25 BB33 CD22

Claims (8)

[Claims] A transport unit configured to transport the metal plate in a predetermined transport direction; a fixing unit configured to fix at least two portions of the metal plate; and a cleaning unit configured to clean the metal plate located between the fixing units with a cleaning liquid. Means, relaxing means for relaxing the metal plate located between the fixing means, and moving means for partially moving the metal plate relaxed by the relaxing portion between the fixing means. A metal plate cleaning device characterized by the above-mentioned. 2. A moving roll, wherein the relaxing means is arranged so that the metal plate between the fixing means is partially wound, and is movable in a direction to decrease a path length of the metal plate. The metal plate cleaning apparatus according to claim 1, wherein: 3. The transporting means comprises a transporting roll disposed between the fixing means and transporting the metal plate, and the moving means enables the transporting roll to rotate forward and reverse. The metal plate cleaning apparatus according to claim 1, wherein the metal plate cleaning apparatus is configured by: 4. The metal plate cleaning apparatus according to claim 3, wherein said fixing means includes a nip roll capable of holding said metal plate between said transport rolls. . 5. The metal plate cleaning apparatus according to claim 1, further comprising a treatment tank that receives the cleaning liquid that has cleaned the metal plate. 6. A metal plate cleaning apparatus, wherein the processing tank is capable of storing a processing liquid for processing the metal plate. 7. A fixing step of fixing at least two places of the metal plate, a cleaning step of cleaning a metal plate located between the parts fixed by the fixing step with a cleaning liquid, and a part fixed by the fixing step. And a moving step of partially moving the metal plate relaxed in the relaxing step between portions fixed by the fixing step. Metal plate cleaning method. 8. A transporting step of transporting the metal plate in a certain transport direction while partially immersing the metal plate in the processing liquid in the processing tank, and a discharging step of discharging the processing liquid from the processing tank after the transporting step is stopped. A fixing step of fixing the metal plate before and after the processing tank at the time of stop; a cleaning step of cleaning a metal plate positioned between the parts fixed by the fixing step with a cleaning liquid; A relaxing step of relaxing the metal plate located between the fixed portions, and a moving step of partially moving the metal plate relaxed by the relaxing step between the portions fixed by the fixing step. A method for treating a metal plate, comprising: