KR20000075321A - After Treatment Machine of Metal Thin Foil - Google Patents

Abstract

PURPOSE: An aftertreatment system of metal sheet prevents the phenomenon, such as rumple, scratch, spot, meandering or truncation in foil original plate, when processing metal sheet, such as Cu, Ni, Cr or Al, physically and chemically. CONSTITUTION: An aftertreatment system of metal sheet comprises an unwinder(10), a first pinch roll, numerous actuating rolls, a second pinch roll, a rewinder(120) and a first tension sensor. The unwinder(10) has the brake system and provides the wound metal sheet. The first pinch roll looses the metal sheet and provides numerous processing vessels with the loosen metal sheet, to compensate for adjusting the synchronous speed of the entire line of the processing vessels. The numerous actuating rolls convey the metal sheet which is arranged at the numerous processing vessels and is in postprocess. The second pinch roll conveys the process-completed metal sheet to the after-edge in line speed. The rewinder(120) winds the process-completed metal sheet. The first tension sensor is positioned between the numerous processing vessels and the second pinch roll to control the actuating speed of the second pinch roll. The first tension sensor detects the tension on the metal sheet in postprocess according to the standard line speed of the second pinch roll.

Description

After Treatment Machine of Metal Thin Foil

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a post-treatment device for thin metal sheets, in particular Ni, Cr, Al, etc., which are adhered to a surface such as copper foil for PCB or plastic structures, buildings, structures, etc. to have a beautiful gloss and chemical resistance. The present invention relates to a post-processing apparatus for thin metal sheets which can prevent phenomena such as wrinkles, scratches, stains, meandering, breaks, etc. of a foil disc when physically and chemically treating the thin metal sheets.

As the industry advances, the use of cheap plastics, wood, and other synthetic products is increasing day by day, although they are not physically and chemically superior to metal products. However, these plastics and woods do not follow the slight gloss or chemical properties of the metal, so to satisfy this, the shape or frame is made of a synthetic product of plastic, and a thin metal plate is attached on it to make it look like a whole metal product. We recognize that we raise product merchandise.

In addition, in developed countries, demand is gradually increasing, such as chromium (Cr), nickel (Ni), aluminum (Al), etc. made of very thin thin plates on large structures such as buildings and advertisements. For example, aluminum sheet is widely used for packaging of snack products, and nickel sheet is used for various finishing materials and architectural finishing materials such as dry pits.

As described above, the demand and type of metal thin plates are considerably high, and the most advanced technology among them is a technique for processing 3-18 μm thick Cu foil for a printed circuit board (PCB). The manufacturing / use process of the PCB is briefly described below.

First, the disc maker makes a disc for PCB by pressing copper foil with a hot plate press on epoxy resin or phenol resin, which is a thermosetting resin. PCB makers purchase original plates and print circuits of various electronic products on copper foil, leaving only the necessary parts, and removing unnecessary parts by etching to form wiring conductive patterns on insulating boards. The set maker then mounts the components on the PCB board, solders them into semi-finished products and mounts them on the product.

As such, PCBs are manufactured and mounted in products, which require a number of specialized manufacturers and multiple error handling processes, requiring very high quality chemical and physical properties.

Among these requirements, the most important ones are room temperature adhesive strength, high temperature adhesive strength, heat resistance, solderability, corrosion resistance, and the like, and the required characteristics are becoming more precise day by day according to the development speed of electronic products. These required characteristics can be chemically treated as much as possible, but the mechanical part used to process them in large quantities is slower than the development speed of chemical processing technology, which is hampering the yield and productivity of the product.

For example, electronic products have been gradually miniaturized as a whole and all parts used in the product. Accordingly, in order to produce the foil or the foil of the plate to produce the etched sheet or the like to improve the etching property, wrinkles, It was not possible to control the movement speed of the foil and the tension applied to the foil to the extent that even fine problems such as scratches and stains could be satisfied.

In general, the post-treatment apparatus of metal thin plate for surface adhesion may vary depending on the type of metal thin plate or what kind of post-treatment process is used. However, in the case of PCB Cu foil, a pickling process for removing the oxide film on the surface of Cu foil , A number of copper plating processes to form resin tops to increase adhesion between the epoxy resin and phenolic resins and adhesives in pressure press bonding, and heat resistance treatment to prevent discoloration of Cu when laminating Cu foil under high temperature / high pressure Approximately 20-50 rollers are used to carry out the rust prevention process to prevent the oxidization of Cu, which may occur during the transport of the PCB original board, and the opening of the conductive pattern due to the undercut, which may occur during circuit pattern formation. Is being used.

All of these rolls are driven or, in some cases, parts not affected by inertia or speed may be treated as idle.

As a driving mechanism for transporting a large number of rollers, which is conventionally employed in such a post-treatment apparatus, a method of synchronizing the speed of each roll by chaining each roll to a motor and using a continuously variable transmission is used.

However, such a driving method includes not only the tolerances between the chains connected to each roll and the tolerances of the transmission, but also a plurality of treatment tanks for carrying out each treatment process, in which the processing solutions having different temperatures are contained in the foil being processed while being transported. Since the pressure applied varies over time and the influence on the line speed of the foil is different from each other, and each roll has a different diameter, the speed of each roller for conveying the foil matches the linear speed of the foil, that is, The synchronization is not achieved, and a defect occurs in the foil.

In other words, when the speed is not synchronized between the rolls, the foil supplied to the roller having a relatively slow speed may cause wrinkles or scratches to the original fabric of the foil at the time of slipping. In addition, when such a delayed transfer phenomenon occurs and the processing time in the Cu plating bath becomes longer, the fine copper particles may be excessively attached to the fabric at one time and grow into large particles in the subsequent Cu nucleus growth process, causing great damage to the fabric or irregularities. One treatment time can result in staining of the fabric.

In addition, if slip occurs due to the poor synchronization of the roll speed, it causes meandering of the fabric, which leads to a large slitting removal portion of the finished fabric, which lowers the production efficiency. If the tensions applied to the foils are inconsistent with each other due to the difference, a problem arises in that the cutting of the foils occurs at the notched portion.

In addition, in general, since the foil is conveyed at a speed of about 20-30 m / min, in the conventional driving method, when the cutting of the foil occurs, the gap between the cut foil and the foil is opened in this case. In the driving method, there is a problem in that the individual drive is not possible partially, so that the time delay caused by connecting the foils forcibly cut is long and the amount of the foil treated with the loss is large.

Moreover, in order to solve such a problem, a group driving method of driving a plurality of rollers has been proposed, but it has not been an alternative to fundamentally solve various defects as described above.

Therefore, the present invention has been made in view of the problems of the prior art, the object of which is to physically and chemically treat metal thin plates such as Cu, Ni, Cr, Al for surface bonding of PCB or plastic structures, buildings, constructions, etc. When the rolls used in each treatment tank and the pinch rolls used in the unwinder and the rewinder are driven, the servo motor is used to control synchronization between the linear speed of the foil and the rotational speed of each roll. The present invention provides a post-treatment apparatus for a thin metal sheet that can control the tension applied to prevent phenomena such as wrinkles, scratches, stains, meandering, and breakage of a foil disc.

Another object of the present invention is to provide a post-treatment apparatus of a metal sheet that can be processed by connecting single-line foils quickly and easily by individual driving of the rolls, even if breakage occurs during the processing of the foils by driving each roll using an individual servo motor. To provide.

The present invention is to provide a post-treatment apparatus that does not generate wrinkles, breaks, meandering and the like even when the ultra-thin foil is post-processed.

1 is a schematic process chart showing a post-treatment apparatus of a Cu thin plate for PCB of the present invention,

Figure 2a is a schematic side view showing the rewinding structure of the Cu thin film wound in Figure 1,

2b is a plan view of FIG. 2a,

Figure 3a is a schematic side view showing the winding structure of the Cu sheet in Figure 1,

3B is a top view of FIG. 3A,

4A is a schematic cross-sectional view showing a pickling portion and a plating portion;

4B is a top view of FIG. 4A;

5A is a schematic cross-sectional view showing an antirust process unit;

5B is a top view of FIG. 5B;

Figure 6 is a plan view showing a servo motor used as a rotating power source of the present invention,

Figure 7 is an enlarged side view showing the structure of the flush tank and squeeze bar,

8 is a schematic view showing the plating principle of the plating bath,

9 is a process chart for controlling the line speed and tension of the after-treatment apparatus according to the present invention.

* Explanation of Signs of Major Parts of Drawings *

One ; Foil 10; Unwinder

17; Fabric compensation device 20; Unwinder Pinch Roll

21; First tension sensor 22; Second tension sensor

25,26,36,37,44a-44e, 97,98,123; Servo motor

30; Pickling part 40; Copper plating department

54; Flush tank 60; Heat-resistant processing part

70; Antirust process 80; Drying part

90; Rewinder pinch rolls 92; Third tension sensor

100; Edge slitter 110; Automatic Roll Change Device

113; Fourth tension sensor 120; Rewinder

In order to achieve the above object, the present invention provides a post-treatment apparatus of a metal sheet for carrying out physical / chemical post-treatment in a plurality of continuous treatment tanks, wound up for physical / chemical post-treatment. An unwinder having a metal sheet and having a brake device, a first pinch roll for releasing the coiled metal sheet and supplying it to a plurality of processing tanks at a rear end to compensate for the synchronization of the entire line of the processing tank; A plurality of drive rolls arranged in a plurality of treatment tanks to transfer the thin plates being processed afterwards, a second pinch roll driven to transfer the metal sheets having been processed to the rear end at a set reference linear speed, and the processed thin plates; A second pinch roll disposed between the plurality of processing tanks and the second pinch rolls for use in controlling the rewinder to be wound and the driving speed of the second pinch rolls; A first tension sensor for detecting a tension on the thin plate being processed after the reference linear velocity and a fourth for detecting the tension of the thin plate positioned between the second pinch roll and the rewinder to control the driving speed of the rewinder. It is composed of a tension sensor, each roll provides a post-treatment device of a thin metal sheet, characterized in that the rotational speed is individually controlled by a motor.

In the present invention, as the second pinch roll is driven at a reference linear speed, the individual rotational speeds for the plurality of driving rolls are controlled to match the linear speed of the sheet.

Further, the present invention provides a second tension sensor for detecting the tension of the thin plate being processed between the first pinch roll and the plurality of treatment tanks, and the tension of the thin plate between the unwinder and the first pinch roll. The apparatus further includes a third tension sensor, and controls the driving speed of the first pinch roll according to the output of the second tension sensor, and controls the braking force of the brake device according to the output of the third tension sensor.

The metal thin plate may be any one of Cu, Ni, Cr, and Al thin plates.

If the metal thin plate is a Cu thin plate for PCB manufacturing, the plurality of treatment tanks may have a pickling portion in which a pickling process is performed to remove an oxide film on the surface of the Cu thin plate, and an adhesive force between the insulating resin and the adhesive during pressure press bonding. A copper plating part undergoing a plurality of copper plating processes for forming a resinous phase, a heat resistant treatment part for forming a heat resistant metal film to prevent discoloration of Cu when laminating Cu sheets at high temperature / high pressure, and Cu during transport It consists of a rust prevention treatment section which is subjected to a plurality of rust prevention treatment processes to prevent the phenomena of opening of the conductive pattern by the undercut during oxidation and circuit pattern formation, and a drying section for washing and drying the thin plate subjected to the various treatments described above. .

In addition, the present invention is an edge slitter for cutting and removing both edges of the finished thin plate, and the rewinder at the rear end of the buffer and fabric so that the thin sheet fabric is replaced with another empty winder core when the required length and weight It is preferable to further include an automatic roll replacement device for breaking the.

According to another feature of the present invention, the present invention provides a post-treatment apparatus for a metal sheet for winding the metal sheet wound on the unwinder with a rewinder after performing physical / chemical post-treatment in a plurality of continuous treatment tanks. A first pinch roll for transferring the thin metal plate after the post-treatment to the rewinder at a reference linear speed set at a rear end of the processing tank, and the first pinch roll being disposed at the plurality of processing tanks to drive the reference linear speed Accordingly, each individual rotational speed is controlled to match the linear velocity of the sheet, and a plurality of drive rolls for transferring the post-processed sheet to the first pinch roll, and the metal wound to compensate for the synchronization of the entire line of the treatment tank. A second pinch roll for releasing the thin plate and supplying it to the plurality of treatment tanks at the rear end, and a plurality of treatment tanks for use in controlling the driving speed of the first pinch roll. And a first tension sensor disposed between the first pinch rolls to detect the tension on the thin plate being processed, wherein each roll has a rotation speed controlled individually by a motor. Provide a processing device.

As described above, in the present invention, when a thin plate such as Cu, Ni, Cr, Al, etc. for surface adhesion of PCBs is physically and chemically treated, various rolls used in respective treatment tanks, pinch rolls used for unwinder and rewinder, etc. The tension of the foil is controlled by controlling the driving of the foil to be synchronized between the linear speed of the foil and the rotational speed of each roll by using a servo motor.The wrinkles, scratches, stains, meanders, breaks, etc. Can prevent the phenomenon.

Moreover, even if breakage occurs during the processing of the foil, the servo motor of the roll can be individually driven to quickly and easily connect the disconnected foils, so that the amount of defective processing foil can be minimized and the processing delay time can be reduced. .

(Example)

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a schematic process diagram showing an aftertreatment apparatus of a Cu thin plate for PCB of the present invention, FIG. 2a is a schematic side view showing a rewinding structure of a Cu thin plate wound in FIG. 1, FIG. 2b is a plan view of FIG. Figure 3a is a schematic side view showing the winding structure of the Cu thin plate in Figure 1, Figure 3b is a plan view of Figure 3a, Figure 4a is a schematic cross-sectional view showing a pickling bath and plating bath, Figure 4b is a plan view of Figure 4a, Figure 5a is a rust treatment tank Figure 5b is a schematic cross-sectional view, Figure 5b is a plan view of Figure 5b, Figure 6 is a plan view showing a servo motor used as a rotary power source of the present invention, Figure 7 is an enlarged side view showing the structure of the squeeze bar, Figure 8 is a plating principle of the plating bath It is a schematic diagram showing.

Referring first to Figure 1, the post-treatment device of the Cu thin plate for PCB of the present invention is largely classified into an unwinder (10) for supplying the Cu foil (1) wound for physical / chemical treatment, and of the entire line The unwinder pinch roll 20 which acts as a brake to compensate for the synchronous speed, the pickling unit 30 through which a pickling process for removing the oxide film on the surface of the Cu foil is carried out, and an epoxy resin or a phenol resin Laminating the copper plating part 40, which is subjected to a plurality of copper plating processes, for example, five times to form a resinous phase to increase the adhesive strength with the adhesive when the pressure press is bonded, and the Cu foil 1 under high temperature / high pressure. The heat-resistant processing part 60 which performs a heat-resistant processing process to prevent a discoloration of Cu at the time of making it, and the conductive plaque by the undercut which may occur at the time of oxidation of Cu and circuit pattern formation which may occur during the conveyance of a PCB original board Anti-corrosion treatment unit 70 is performed a plurality of times, for example three times to prevent the open phenomenon of the anti-corrosion treatment, and a drying unit for washing after washing the foil (1) subjected to the above-described various treatments 80, a rewinder pinch roll 90 for adjusting the speed and tension of the entire line together with the unwinder pinch roll 20, and an edge slitter for cutting and removing both edges of the processed foil. 100) and the automatic roll replacement device 110 that cuts the buffer and the fabric so that the fabric can be replaced with another empty winder core 122 when the required length and weight of the rewinder 120 at the rear end, and a pair of It is composed of a rewinder 120 having winder cores 121 and 122 and winding the finished foil fabric.

In addition, between the unwinder 10 and the unwinder pinch roll 20, when the fabric to be processed is unrolled from the winding reel 11 of the unwinder 10, a new winding reel 12 may be replaced. The far-end compensation device 17 is also installed between the pair of fixed guide rolls 18a and 18b so that the variable rolls 19 are positioned in the front-rear direction to serve as a far-end compensation for the replacement time.

The unwinder 10 includes a brake device 10a for controlling the unwinding of the foil 1 from the take-up reels 11 and 12, and the unwinder pinch rolls 20 each have a servo motor ( 25, 26 to unwind the foil 1 from the unwinder 10 to compensate for the linear velocity of the foil 1 for the various treatment baths described below equally to the speed for each roller of the treatment tank. It consists of the 1st and 2nd drive rollers 23 and 24 which take out.

The first driving roller 23 is a rubber lining roll, the second driving roller 24 is composed of a hard chromium-plated roll, the surface of the foil 1 is a first roll roller 23 is a rubber roll smooth surface. And the rough surface is brought into contact with the second drive roller 24, which is a hard chrome roll, to maximize friction.

In this case, the first tension sensor 21 for detecting the tension of the foil between the unwinder 10 and the pinch roll 20 is provided at the input portion of the pinch roll 20, and the unloaded tension value is detected using the detected tension value. Used to control the brake device 10a in the winder 10 to be released, the second tension sensor 22 installed at the output of the pinch roll 20 measures the tension applied to the foil of the processing tank to pinch the roll 20 ) Serves to release the foil from the unwinder 10 in accordance with the linear velocity of the foil of the treatment tank.

The remaining rolls 27a-27e used for the other pinch rolls 20 serve as guide rolls that are idle rotated.

At the rear end of the pinch roll 20, the pickling section 30, the copper plating section 40, the heat resistance processing section 60, and the rust preventing treatment section 70, which will be described later, are continuously connected to each other to perform a physical / chemical treatment.

Each treatment tank is composed of one or a plurality of treatment tanks, each of which has an energizing roll 50, and each energizing roll 50 is composed of an energizing block 51 and an energizing ring 52 on both sides. It serves to supply AC power so that each treatment tank can be plated.

In addition, since each treatment tank has a different concentration or a different treatment, chemicals appear on the surface of the foil 1 when they are plated in each plating tank, and mixed with the chemicals of the next treatment tank when they cross each treatment tank. A plurality of spray nozzles 53 are disposed at both sides of the foil at the inlet and outlet of the bath so that the surface is cleaned at a pressure of about 2 kg / cm 2, so that one or two stages are disposed between the processing tank and the processing tank. Washing tank 54 is provided. The roll 55 located at the lower part of each washing tank 54 is made of an idle roll, and a squeeze bar 56 is provided at the inlet of each treatment tank to prevent the washing water and the chemicals from being passed while washing with water. And each roll located at the exit side as shown in FIG.

On the other hand, the pickling portion 30, which is a pickling process for removing the oxide film on the surface of the Cu foil, to remove the oxide film formed on the surface of the fabric Cu in one bath 31 as shown in FIG. For example, 10% aqueous solution of sulfuric acid is contained.

Cu foil (1) to be pickled is a guide roll (32) in a state of being electrically charged (-) while passing through a current-carrying block (51) and a current-carrying roll (50) receiving AC power from the current ring (52), The bottom roll 34 disposed in the pickling tank 31 and the guide roll 33 pass through the pickling tank 31.

As a result, in the Cu foil 1 passing through the pickling bath 31, the oxide film on the surface of the foil is removed by an aqueous sulfuric acid solution. The foil 1 from which the oxide film has been removed prevents the processing solution from being buried by the squeeze bar 56 as it passes through the guide roll 33 to the next washing tank 54.

In this case, the conductive roll 50 passes in a state where the foil is compressed for charging, and the bottom roll 34 is subjected to a large force because it comes into contact with the processing solution higher than room temperature, so that the servo motors 36 and 37 are used. It is required to control the precise rotational speed synchronized with the linear speed of the foil, and in the case of the guide rolls (32, 33) is subjected to a small load, using the idle (38) or step motor (39) to save the equipment cost It is possible to do Of course, in this case, it is more preferable to use a servo motor for more precise speed control.

After pickling, the foil (1) is then washed in a washing tank (54), and then a plurality of copper plating parts (40) for forming a resin top to increase the adhesion of the epoxy resin or phenolic resin and the adhesive during pressure press bonding There are five copper plating processes, for example five times.

The first to fifth plating baths 40a-40e constituting the copper plating part 40 each have a current-carrying roll 50 for charging the foil to the inlet of each tank (-) similarly to the pickling part 30 described above. Is disposed, and bottom rolls 42a-42e driven by the servo motors 44a-44e are disposed at the inner lower portion of the copper plating treatment tanks 41a-41e, and pass through the copper plating treatment tanks 41a-41e. Positive foil plates 43a-43e charged with (+) are disposed outside the foil, and impression rolls 45a-45e driven by the servo motors 44a-44e are disposed at the upper exit. If this is simplified and easily expressed, it may be displayed as shown in FIG. 8.

Each plating bath used in the present invention was subjected to rover lining on a steel plate (SS41) to withstand various chemicals (acid and alkali), and the rollers other than the energizing roll 50 were rubber lining on stainless steel, The squeeze bar 56 was pressed against the foil 1 on the roll so that the medicine and the water were not passed.

On the other hand, the reason why the copper plating portion 40 is composed of a plurality of first to fifth plating baths 40a-40e is easy to increase the plating treatment speed, and is used by separating to obtain a plating film having a constant thickness.

In this case, each plating bath uses an aqueous solution of CuSO ₄ and sulfuric acid (H ₂ SO ₄ ) as the plating solution. In the first plating bath 40a, the concentration of the solution is lowered and the applied current is set near the limit current density region. By electrolytic treatment to form a Cu nucleus on one surface of the foil (1), after passing through the washing process in the washing tank 54, and then proceeds to the second plating tank (40b).

In the second plating bath 40b, in contrast to the first plating bath, the concentration is increased and a normal Cu coating film is applied by electrolysis applying an applied current below a limit current density to coat and stabilize the Cu core with Cu. Is carried out.

When this process is repeated, a so-called dendrite is formed on the surface of the foil, so that an adhesive is applied to the surface of the dendrite to manufacture a PCB disc in the future, thereby increasing the adhesive strength between the epoxy resin or the phenol resin and the adhesive when the press is pressed.

However, the combination of nucleation and coating fixing for forming such a dendrite can be added or subtracted depending on how many stages the copper plating bath is set.

When the multi-stage Cu plating process as described above is completed, the final washing is completed by two-stage washing with water.

Subsequently, a heat resistant treatment step for preventing the discoloration of Cu when laminating the Cu foil 1 under high temperature / high pressure is performed in the heat resistant treatment part 60.

The heat resistance treatment unit 60 is an electrolytic solution for coating a metal having heat resistance when soldering, such as Zn, Sn, or brass, as an electrolyte in a plating bath composed of one or two stages, and takes the electrolysis method as described above. .

After the heat resistance treatment is completed, complete washing is performed by two-stage washing. Then, the phenomenon of opening of the conductive pattern due to the oxidation of Cu and the undercut that may occur during the formation of the circuit pattern may be generated. The antirust treatment unit 70 performs one or more times, for example, 1 to 3 times to prevent the rust prevention treatment.

To this end, the first to third antirust treatment tanks 70a to 70c configured as shown in FIGS. 5A and 5B have a structure capable of performing electrolytic plating in the same manner as the plating bath described above. In addition, V, Mo, Zn and the like are coated on both sides of the foil (1).

In addition, when the rolls of the respective rolls to the first to third antirust treatment tanks 70a to 70c and the rolls to the washing tank 54 are subjected to a large load similar to the plating bath described above, and precise speed control is required, When the servo motor 71 is used and the load is relatively low, the step motor 72 is used or the idle roll 73 is used.

The servo motor requiring high precision control used in the present invention described above has a power transmission structure as shown in FIG. 6. That is, each roll of the shaft of each motor 61 is connected to the reducer 62, and the rotational force moderately reduced in the reducer 62 is rotatably supported by the bearing 64 via the coupling 63. 65 is passed.

On the other hand, the foil (1) after the rust preventive treatment is completely washed with two-stage water washing and then transferred to a drying unit 80 for drying. In this case, before it is introduced into the drying unit 80, the air nozzle is first used to remove the moisture from the foil which has passed through the chemical treatment and the washing tank in the previous process, so that it can be dried in the drying furnace in a short time. Inject air at speed.

The drying unit 80 includes a main drying furnace 81 and a horizontal auxiliary drying furnace 82 in which a vertical far infrared heater and an infrared heater are built, and quickly dry the moisture of the foil 1.

The foil 1 having completed the processing as described above is disposed at the rear end and fed to the rewinder pinch roll 90 for adjusting the speed and tension of the entire line together with the unwinder pinch roll 20.

The rewinder pinch roll 90 includes the third and fourth drive rollers 94 and 95 in the same way as the above-described unwinder pinch roll 20 to control the linear velocity and the tension of the entire foil, A third tension sensor 92 and guide rolls 91, 93, and 96 are used to detect the tension of the foil 1 applied to 30-80 and use it for drive control of the pinch roll 90.

The first driving roller 94 is a rubber lining roll, and the second driving roller 95 is composed of a hard chrome plated roll, and the servo motors 97 and 98 receive a tension value of the third tension sensor 92, respectively. Driven by

The rear end of the rewinder pinch roll 90 is connected to the edge slitter 100 for cutting and removing both sides of the finished foil according to the set standard or the width required by the user.

Edge slitter 100 is composed of a circular knife 101 made of top and bottom as well as an edge winder 102 and a plurality of guide rolls (103-107) for winding the cut edge portion of the fabric Cut both sides.

At the rear end of the edge slitter 100, the roll rewinder 120 of the rear end is an automatic roll replacement device that cuts and cushions the fabric so that the fabric can be replaced with another empty winder core 122 when the required length and weight of the fabric is required. And a rewinder 120 having a pair of winder cores 121 and 122 and winding the finished foil fabric.

The automatic roll replacement device 110 is a dancing roller that is rotated along the pivot shaft 111 so as to have time to replace the other winder cores 121 and 122 when the winder cores 121 and 122 are required to be replaced. a fourth tension sensor 113 for detecting a tension applied to the foil between the dancing roller 112 and the pinch roll 90 and the rewinder 120 to control the servo motor 123 for driving the rewinder 120. And a pivot rock 118 having a knife 114 for cutting the foil fabric wound around the winder cores 121 and 122, and a plurality of guide rolls 115-117.

The rewinder 120 includes a pair of winder cores 121 and 122 and a servo motor 123 capable of controlling a taper tension control and a tension when winding the finished foil fabric and a deceleration for driving the rewinder. A turret motor 124 is provided to replace the mode and the winder cores 121 and 122.

The aftertreatment apparatus of the present invention configured as described above is controlled as follows to control the tension and linear velocity applied to the foil.

The foil is subjected to the temperature of each tank when subjected to a plurality of treatment tanks, for example, pickling tanks, copper plating tanks, heat resistant treatment tanks, antirust treatment tanks, washing tanks, and the like, and thus the thermal expansion rate of the foil, and the depth of the chemical contained in each tank. Since the frictional resistance according to time changes and the outer diameter of each roll differs from each other, it is almost impossible to control it constantly by one driving means.

Therefore, in spite of these changes, in order to match the speed of the rollers of each processing tank of 50-60 in total and the linear speed of the foil, individual control is performed to match the rotational speed of each roller to the overall linear reference speed of the foil. It is necessary first of all.

Furthermore, for example, the bottom roll and the impression roll installed in the tank in each treatment tank should be driven faster than the standard linear speed because the foil is stretched by thermal expansion, and the energizing roll is used to remove the foil contracted by water washing and room temperature cooling. It must be driven differently from the roll as it must be transported.

To this end, in the present invention, as described above, the rolls that are used in the respective treatment tanks and are subjected to large loads and tensions are precisely driven by using a servo motor or step motor, and the control thereof is performed as a plurality of sub-controllers SC. The overall control of the plurality of sub-controllers is configured to perform the control in the main controller MC.

The unwinder pinch roll 20 and the rewinder pinch roll 90 are provided at the front and rear ends of the treatment tank 30-80, respectively, to manage the linear velocity and tension force of the overall foil 1, The 10 and the rewinder 120 are each provided with a brake device 10a and a clutch for controlling the release speed of the foil.

In addition, the first tension sensor 21 between the unwinder 10 and the unwinder pinch roll 20, and the second tension sensor 22 between the unwinder pinch roll 20 and the processing tank 30-80. ), A fourth tension sensor 113 is installed between the processing tank 30-80 and the rewinder pinch roll 90, and a fourth tension sensor 113 is provided between the rewinder pinch roll 90 and the rewinder 120, respectively. have.

The unwinder pinch roll 20 and the rewinder pinch roll 90 are driven to drive the unwinder pinch roll 20 according to the second tension sensor 22 in order to compensate that the synchronous speed of the entire line is adjusted. The driving speeds of the beam motors 25 and 26 are determined, and the driving speeds of the servo motors 97 and 98 for driving the rewinder pinch roll 90 are determined according to the third tension sensor 92.

As a result, the unwinder pinch roll 20 serves as a brake, and the rewinder pinch roll 90 serves as a main driving device for determining the linear velocity of the entire apparatus.

The unwinder 10 has the tension value determined by the first tension sensor 21 when the unwinder pinch roll 20 pulls the foil 1 with the rotational speed determined according to the second tension sensor 22. When detected and applied to the brake device 10a, the brake device 10a lowers the braking force corresponding to the tension value to increase the release speed of the coil 1 and maintain the state.

The rewinder 120 basically performs a winding tightly in accordance with the tapered tension control when winding the coil 1 and loosely in the second half, and at the same time the linear speed of the rewinder pinch roll 90 is set, When a tension value greater than the pressure is applied, the clutch function is a sleep state. When the tension value is detected by the fourth tension sensor 113, the servo motor 123 is controlled to adjust the tension accordingly.

In the present invention, the basic speed and tension of the basic foil is controlled until the foil 1 is wound on the winder core 121 of the rewinder 120 from the winding reel 11 of the unwinder 10 in the same manner as described above. Is done.

Hereinafter, a control process of the post-processing apparatus according to the present invention will be described in detail with reference to FIG. 9.

First, using the input device of the main controller MC (not shown), the initial line speed of the entire foil is determined as the initial value, and the foil to be treated is one of Cu, Ni, Cr, and Al. Linear expansion rate, diameter of each roller, tension values of each of the unwinder (UW) 10 and the rewinder (RW) 120, the tension between the rewinder pinch roll (RP) 90 and the rewinder (RW) 120 Enter a value (S10).

Since the diameter of each roller mentioned above is different in the outer diameters of about 50-60 rollers, such as a pinch roll and the roll of each processing tank, each diameter data is needed in order to make linear velocity the same.

Accordingly, the main controller MC calculates the driving speed of the rewinder pinch roll 90 to maintain the overall linear speed based on the input value, and the rollers are all different in diameter so that the linear speed is constant. Since the RPMs of all should be driven differently, the driving speed of each roller is calculated in consideration of the diameter.

Furthermore, in order to give the appropriate tension to the foil in each treatment tank and prevent meandering, this is taken into account when determining the respective drive speeds to proceed slightly faster in the 0.01-0.05% range from unwinder to rewinder.

As described above, the speed signal for controlling the rotational speed of the servo motor SM (or the step motor) driving the respective rolls is calculated and sent to each corresponding sub-controller SC (S20).

Thereafter, each sub-controller SC drives the corresponding servo motor according to the speed signal for each roller received from the main controller MC (S30).

Subsequently, each sub-controller SC receives the temperature value of each tank when the foil 1 passes through the plurality of treatment tanks 30-70 according to the driving of the servo motor, and calculates the thermal expansion rate accordingly. After detecting the rotational speed of the beam motor, a correction control value for maintaining the servo motor SM at the initial set speed is calculated and applied to the servo motor SM again (S40).

Accordingly, the servo motors 97 and 98 are first driven by the sub-controller SC to maintain the set reference linear velocity. In this case, the rewinder pinch roll 90 is detected by the third tension sensor 92. It is added and subtracted in consideration of the tension of the foil of the treatment tank. In this case, the speed is increased when the detected tension value is lower than the tension setting value, and the speed is lowered when the detected tension value is higher than the setting value.

For the other rolls, the tension changes as the parameters (temperature change, tensile force change) of each treatment tank change for each part, so increase and decrease the speed until the tension is adjusted where necessary to prevent wrinkles and meandering. Individual control is made so that the tension is appropriately applied (S50).

As described above, when the compensation is made to match the linear speed of the foil 1 with respect to each treatment tank equal to the speed with respect to each roller of the treatment tank, the second tension sensor 22 measures the tension applied to the foil of the treatment tank and unwinds it. The pinch roll 20 is inputted to the sub-controller SC.

The sub-controller SC drives the servo motors 25 and 26 for the unwinder pinch roll 20 at a driving speed suitable for the linear speed of the foil of the treatment tank according to the received tension value, thereby unwinding the winder 10. Release the foil from (S60).

Accordingly, when the first tension sensor 21 detects a tension value applied to the foil between the unwinder 10 and the unwinder pinch roll 20 and inputs it to the sub-controller SC for controlling the unwinder 10. The sub-controller controls the brake device 10a to lower the braking force in response to the detected tension value. As a result, the brake device 10a increases the release speed of the coil 1 with a braking force corresponding to the tension value and maintains the state (S70).

As described above, the overall wind speed of the apparatus is determined by the unwinder pinch roll 20 and the rewinder pinch roll 90 as the post-treatment process of the foil proceeds, and the individual driving speed for each roll of the treatment tank is selected. By controlling each roll with a servo motor in a separate control method that synchronizes with speed, the tension applied to the foil 1 is constantly controlled to prevent wrinkles, scratches, stains, meanders, breaks, etc. of the foil disc. can do.

Furthermore, in the present invention, even when the foil 1 is broken due to an accident, it is possible to connect the foil within a short time by only operating the roller of the desired part for continuous operation.

In the above embodiment, the Cu foil for surface adhesion of the PCB has been described as an example, but the present invention is not limited thereto. For example, even when physically and chemically treating thin plates such as Ni, Cr, and Al in a plurality of treatment tanks, the above problems can be eliminated by controlling the linear velocity and tension of the thin plates in the same manner as described above. .

As described above, in the present invention, various rolls used in respective treatment tanks and pinch rolls used in unwinders and rewinders when physically and chemically treating thin plates, such as Cu, Ni, Cr, and Al for surface adhesion of PCBs, are used. The tension of the foil is controlled by controlling the driving of the foil to be synchronized between the linear speed of the foil and the rotational speed of each roll by using a servo motor.The wrinkles, scratches, stains, meanders, breaks, etc. By preventing the phenomenon of the loss can be greatly reduced cost.

Moreover, even if breakage occurs during the processing of the foil, the servo motor of the roll can be individually driven to quickly and easily connect the disconnected foil, so that the amount of defective processing foil can be minimized and the processing delay time can be reduced. do.

In the above, the present invention has been illustrated and described with reference to specific preferred embodiments, but the present invention is not limited to the above-described embodiments and is not limited to the spirit of the present invention. Various changes and modifications can be made by those who have

Claims (8)

A post-treatment apparatus for a metal sheet for performing physical / chemical post-treatment of the metal sheet in a plurality of continuous treatment tanks, An unwinder with brake system that supplies wound metal sheets for physical and chemical post-treatment, A first pinch roll for releasing the wound metal sheet and supplying it to a plurality of processing tanks in the rear stage to compensate for adjusting the synchronization speed of the entire processing tank, A plurality of driving rolls disposed in the plurality of treatment tanks and configured to transfer the thin plates being post-processed to the rear end; A second pinch roll which is driven to convey the metal sheet having been processed to the rear end at a set reference linear speed; Rewinder to wind up the processed thin plate, A first tension disposed between the plurality of treatment tanks and the second pinch rolls for use in controlling the driving speed of the second pinch rolls to detect tension on the thin plate being processed after the reference linear speed drive of the second pinch rolls; With sensors, And a fourth tension sensor for detecting the tension of the thin plate positioned between the second pinch roll and the rewinder to control the driving speed of the rewinder. Each of the rolls is a metal sheet after-treatment device, characterized in that the rotational speed is individually controlled by a motor. The post-treatment apparatus of claim 1, wherein as the second pinch roll is driven at a reference linear speed, individual rotational speeds of the plurality of driving rolls are controlled to match the linear speed of the thin plate. According to claim 1, A second tension sensor for detecting the tension of the thin plate being processed between the first pinch roll and the plurality of processing tanks, Further comprising a third tension sensor for detecting the tension of the thin plate between the unwinder and the first pinch roll, And controlling the driving speed of the first pinch roll according to the output of the second tension sensor and lowering the braking force of the brake device according to the output of the third tension sensor. The post-treatment apparatus of a metal thin plate according to claim 1, wherein the metal thin plate is any one of Cu, Ni, Cr, and Al thin plates. The method of claim 4, wherein the metal thin plate is a Cu thin plate for PCB manufacturing, the plurality of treatment tanks A pickling portion in which a pickling process for removing an oxide film on the surface of the Cu thin plate is performed; A copper plating part in which a plurality of copper plating processes are performed to form a resin top to increase adhesion between the insulating resin and the pressure press, A heat-resistant treatment part for forming a heat-resistant metal film for preventing Cu from discoloring when laminating Cu thin plates at high temperature / high pressure; An rust prevention treatment unit which performs a plurality of rust prevention treatment steps for preventing oxidation of Cu and opening of the conductive pattern by undercut during formation of a circuit pattern during transportation; The post-treatment apparatus of a metal thin plate, characterized in that it consists of a drying unit for washing and then drying the thin plate subjected to the various treatments described above. According to claim 1, Edge slitters for cutting and removing both edges of the finished thin plate, The post-treatment device of the metal sheet further comprises an automatic roll replacing device that cuts and cushions the fabric so that the rewinder at the rear end can be replaced with another empty winder core when the required length and weight of the sheet is reached. In the post-treatment apparatus of a metal sheet for winding the metal sheet wound on the unwinder with a rewinder after performing physical / chemical post-treatment in a plurality of continuous treatment tanks, A first pinch roll for transferring the thin metal plate on which the post-treatment is completed to a rewinder at a reference linear speed set at a rear end of the treatment tank; A plurality of driving rolls arranged in the plurality of treatment tanks so that each individual rotational speed is controlled to match the linear speed of the thin plate as the first pinch roll is driven at the reference linear speed, thereby transferring the thin plate being processed to the first pinch roll and, A second pinch roll for releasing the coiled metal sheet and supplying it to a plurality of processing tanks in the rear stage to compensate for adjusting the synchronization speed of the entire processing tank, It is composed of a first tension sensor disposed between the plurality of processing tanks and the first pinch roll for use in controlling the driving speed of the first pinch roll to detect the tension on the thin plate being processed after the Each of the rolls is a metal sheet after-treatment device, characterized in that the rotational speed is individually controlled by a motor. 8. The brake device according to claim 7, wherein the brake device for controlling the loosening of the metal sheet wound around the unwinder and the tension between the unwinder and the second pinch roll used to control the braking force of the brake device. A second tension sensor for detecting a tension force, a third tension sensor for detecting a tension of a thin plate being processed between a plurality of treatment tanks and a second pinch roll used to control a driving speed of the second pinch roll; And a fourth tension sensor for detecting a tension of the thin plate positioned between the first pinch roll and the rewinder to control the driving speed of the rewinder.