JPH10330968A - Surface treatment device for long size stock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a time required to charge a long size stock and to improve a production capacity in a treatment line by detecting that a start end of a long size stock, which is charged in a treatment line guided with a long size guide member, passes a non-treatment part and switching a transfer speed of a long size stock based on the signal. SOLUTION: When a metal thin sheet 12 of long size is charged to, for example, an etching line by a guide belt 30, at beginning, a roller drive motor 46 is driven in high speed to drive a main drive roller 24, the guide belt 30 is transferred by a roller 24, the metal thin sheet 12 is transferred so as to be guided to the etching line by the guide belt 30. An optical detection type sensor 34 detects that a start end of the metal thin sheet 12 reaches an inlet of a facing part, the detected signal is amplified by an amplifier 36, the signal is sent to CPU38 and then from CPU38 to a controller 44, a control signal is sent from the controller 44 to a roller drive motor 46, a rotation speed of the motor 46 is switched to a low speed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface treatment apparatus for a long material, which carries out a predetermined surface treatment on the long material while transporting the long material in a longitudinal direction thereof. The present invention relates to a surface treatment apparatus for a long material that is suitably used when manufacturing shadow masks, aperture grills for Trinitron (registered trademark) pipes and the like, lead frames for semiconductor elements, and the like by using a photoetching method.

[0002]

2. Description of the Related Art In general, a manufacturing apparatus for manufacturing a shadow mask, for example, transports a long metal thin plate having a resist film having a predetermined pattern formed on a main surface thereof in the longitudinal direction thereof, An etching line is provided for supplying an etchant to the main surface to etch the exposed metal surface of the main surface of the thin metal plate and to form a large number of fine through holes in the thin metal plate on both sides thereof. As disclosed in, for example, JP-A-8-81786, a buffer device (dancer roller device) for temporarily storing a long metal thin plate, a surface setting device, an etching device, and a cleaning device are provided in this etching line. , A peeling device and the like are arranged in series in a predetermined direction.

When a long metal sheet is introduced into such an etching line, for example, Japanese Patent Application Laid-Open No. Hei 6-150816
As disclosed in the publication, a long guide belt having a width dimension smaller than the width dimension of the metal sheet is connected to the starting end side of the metal sheet. Then, first, the guide belt is put into the etching line, and the guide belt is arranged over the entire length of the etching line, and thereafter, the sheet metal is guided into the etching line by the guide belt.

[0004]

In recent years, a long metal sheet has been subjected to various surface treatments such as surface treatment, etching, cleaning, and film stripping, and is conveyed through an etching line. The transport speed has become slower with higher definition of the shadow mask. However, when feeding a long metal sheet into the etching line, the transport speed of the guide belt transported in the etching line,
The transport speed is the same as the transport speed of the metal sheet that is transported through the etching line while the metal sheet is being surface-treated. For this reason,
It takes a considerable amount of time for the starting end of the sheet metal guided to the guide belt to reach the first surface treatment device in the etching line, for example, the surface treatment device. As a result, there is a problem that the production capacity in the etching line is reduced.

[0005] The present invention has been made in view of the above circumstances, and a long material such as a long metal sheet is used.
When guided by a long guide member and inserted into a processing line such as an etching line, it is possible to reduce the time required for inputting the long material and improve the production capacity in the processing line. It is an object of the present invention to provide a surface treatment device for a long material.

[0006]

The invention according to claim 1 is
A processing line composed of a non-processing portion and at least one surface processing portion arranged in series in a predetermined direction, and a conveying means for conveying the long material in the longitudinal direction along the processing line. In the surface treatment apparatus for a long material, the long material is guided by a long guide member connected to the starting end of the long material when the long material is charged into the processing line. Detecting means for detecting that the starting end of the long material guided by the guide member is conveyed through the processing line and has passed through the non-processing portion; and a detecting signal output from the detecting means, Speed switching means for controlling the transport means to switch the transport speed of the long material.

According to a second aspect of the present invention, in the surface treatment apparatus according to the first aspect, the conveying speed of the long material is increased until the starting end of the long material guided by the guide member has completely passed through the non-processing portion. Then, when the detecting means detects that the starting end of the long material has passed through the non-processing portion, the conveying speed of the long material is switched to a low speed by the speed switching means.

According to a third aspect of the present invention, in the surface treatment apparatus according to the first or second aspect, the non-processing section has a buffer section for accumulating a long material.

According to a fourth aspect of the present invention, in the surface treatment apparatus according to any one of the first to third aspects, the surface treatment section has a main surface on which a resist film having a predetermined pattern is formed. An etching processing section for supplying an etching solution to a long material made of and performing an etching process.

In the case where the surface treatment apparatus according to the first aspect of the present invention is used, when the long material is introduced into the processing line by being guided by the guide member, the start of the long material is not detected by the detecting means. It is detected that the sheet has passed through the processing unit, and the speed switching unit receives the detection signal output from the detection unit, controls the conveyance unit, and switches the conveyance speed of the long material. Therefore, the transport speed until the starting end of the long material has passed through the non-processing portion and the transport speed after the starting end of the long material has passed through the non-processing portion are appropriately determined according to the type of the processing line. For example, when the transport speed until the starting end of the long material has passed through the non-processing portion is faster than the transport speed after the starting end of the long material has passed through the non-processing portion, The time required for the guide member and a part of the long material to pass through the non-processing portion is shortened, and the time required for feeding the long material is shortened.

In the surface treatment apparatus according to the second aspect of the present invention,
The transport speed until the starting end of the long material has passed through the non-processing section is increased, and the transport speed is switched to low when the starting end of the long material has passed through the non-processing section. The time required for a part of the length material to pass through the non-processing portion is shortened, and the time required for feeding the long material is shortened.

In the surface treatment apparatus according to the third aspect of the present invention,
When the guide member and a part of the long material are conveyed in the buffer unit irrelevant to the surface treatment of the long material, the conveyance speed is the same as the conveyance speed when the long material is conveyed in the surface treatment unit. For example, the transfer speed is made faster than the transfer speed when the long material is transferred in the surface treatment section.

[0013] In the surface treatment apparatus of the invention according to claim 4,
The conveyance speed when the guide member and a part of the long metal sheet are conveyed in the non-processing portion is changed to the conveyance speed when the metal sheet is conveyed in the etching processing portion and subjected to the etching process. Is made faster than the transport speed when transported in the etching section.

[0014]

Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic structural view of an apparatus for etching a long metal thin plate. An etching line of the etching apparatus of the illustrated example is provided with an unwinding unit 14 for feeding a metal thin plate 12 from a material coil 10 in which a long metal thin plate having a resist film having a predetermined pattern formed on a main surface is wound in a coil shape. A buffer section (dancer roller section) 16 for temporarily accumulating the long metal sheet 12, a re-coating section 18 for performing a corrosion preventing treatment on both sides of the metal sheet 12, and a surface treatment of the metal sheet 12 as a pretreatment for etching. Surface section 2 that performs
0 and an etching unit 22 for supplying an etching solution to the metal sheet 12 to perform an etching process, and these units are arranged in series in a predetermined direction. And the metal thin plate 12 is a main drive roller 24,
The sheet is conveyed along the processing line in the longitudinal direction by a conveying mechanism including a dancer roller 26 and a plurality of conveying rollers 28.

In this etching line, the metal sheet 12 needs to be conveyed at a predetermined appropriate conveyance speed so that the metal sheet 12 can be subjected to a required process. 22 (exposed part 2
0), and the unwinding part 14 to the unwinding part 20
The section up to the entrance of the metal sheet 1 has an appropriate transport speed irrespective of the etching process, for example, at the maximum transport speed of the apparatus.
2 may be transported. The length of the section from the unwinding section 14 to the entrance of the unwinding section 20 is usually close to 50% of the entire length (for example, for the total transport distance of the metal sheet 12 of about 200 m, the unwinding section 14 to the entrance of the unwinding section 20). Transport distance up to 100
m).

When the metal sheet 12 is unwound from the material coil 10 of the unwinding section 14 and the metal sheet 12 is fed into the etching line, a plan view is shown in FIG. 2 and a side view is shown in FIG. A guide belt 30 having a width dimension smaller than the width dimension of the metal sheet 12 is provided on the starting end side of the sheet metal 12.
Are connected by a bonding film 32 or the like. Then, first, the guide belt 30 is fed into the etching line from its start end, and the guide belt 30 is arranged over the entire length of the etching line. Thereafter, the thin metal plate 12 is guided into the etching line by the guide belt 30. . In FIG. 1, a solid line indicates the metal sheet 12 and a dotted line indicates the guide belt 30.

The etching apparatus includes a metal sheet 1
2 and a mechanism for switching the transport speed of the guide belt 30 are provided. This speed switching mechanism will be described next with reference to FIGS.

At a position near the entrance of the exposed portion 20, there is provided a light detection type sensor 34 for detecting that the starting end of the long metal sheet 12 guided by the guide belt 30 passes. The sensors 34 are vertically arranged so as to face each other with the horizontal conveying surface of the thin metal plate 12 therebetween.
a and a light receiving section 34b. The light receiving section 34b is electrically connected to the CPU 38 via the amplifier 36. CP
The input operation panel 40 and the memory 42 are connected to U38. Further, the CPU 38 is connected to a controller 44 for controlling the transport speed of the metal sheet 12, and the controller 44 is connected to a roller driving motor 46 for driving the main driving roller 24.

In the etching apparatus having the above-described structure, the elongated metal sheet 12 is
When introducing and introducing into the etching line, first,
The roller driving motor 46 is driven to rotate at high speed, for example, at the maximum speed, to rotate the main drive roller 24, to transport the guide belt 30 by the roller 24, and
By 0, the metal sheet 12 is conveyed so as to be guided to the etching line. In this way, the guide belt 30 and the thin metal plate 12 are conveyed, and when the starting end of the thin metal plate 12 reaches the entrance of the exposed portion 20 (the state shown in FIG. 1), the light is emitted from the light emitting portion 34a of the sensor 34. Since the light which has been blocked by the start end of the thin metal plate 12 and does not enter the light receiving portion 34b, it is detected that the start end of the thin metal plate 12 has reached the entrance of the exposed portion 20. Then, the light receiving section 34 of the sensor 34
b sends the detection signal to the amplifier 36,
Is sent to the CPU 38. CP
When the detection signal is input to U38, the detection signal is received, a signal is transmitted from the CPU 38 to the controller 44, a control signal is transmitted from the controller 44 to the roller driving motor 46, and the rotation speed of the motor 46 is reduced. Can be switched. The main driving roller 24 causes the metal sheet 12
The metal sheet 12 is conveyed at a predetermined conveying speed so that the respective processes of face-out and etching are appropriately performed. Thereafter, the metal sheet 12 is moved to the surfaced portion 2 at the production speed.
0 and the inside of the etching unit 22,
The metal sheet 12 is subjected to surface treatment and etching. As described above, in this etching apparatus, a part of the guide belt 30 and the unwinding portion 14 on the starting end side of the metal sheet 12 unwound from the coil material 10 is
Since the sheet is conveyed at a high speed in the buffer section 16 and the recoating section 18 which are the non-processing sections, the passage time is shortened, and the time required for loading the metal sheet 12 is shortened.

Although the above embodiment has been described by taking an example of an apparatus for etching a thin metal plate, the present invention is applicable not only to an etching apparatus but also to various surface processing apparatuses for a long thin sheet having a non-processing portion. Applicable. Also,
In the above-described embodiment, the shortening of the time required to insert the metal sheet at the time of starting the line has been described. However, the present invention can obtain the same effect by performing the same control also at the time of putting in the preceding condition. . Further, in the above-described embodiment, the transport speed of the metal sheet is switched from high speed to low speed, but the transport speed of the long material may be switched from low speed to high speed depending on the type of the processing line.

[0022]

According to the present invention, a long material such as a long metal sheet is guided by a long guide member to a processing line such as an etching line. When loading, it is possible to switch between the transport speed until the beginning of the long material has passed through the non-processing portion and the transport speed after the beginning of the long material has passed through the non-processing portion, for example, When the transport speed until the start end of the long material has passed through the non-processing section is faster than the transport speed after the start end of the long material has passed through the non-processing section, the feeding of the long material is started. The required time can be shortened, and the production capacity in the processing line can be improved.

In the surface treatment apparatus according to the second aspect of the present invention,
The transfer speed until the start end of the long material has passed through the non-processing section is increased, and the transfer speed is switched to low when the start end of the long material has passed through the non-processing section. The time required for introduction is reduced, and the production capacity in the processing line is improved.

In the surface treatment apparatus of the invention according to claim 3,
The conveyance speed when the guide member and a part of the long material are conveyed in the buffer unit irrelevant to the surface treatment of the long material is changed to the conveyance speed when the long material is conveyed in the surface treatment unit. For example, by making the conveying speed higher when the long material is conveyed in the surface treatment section, it is possible to shorten the time required for feeding the long material and improve the production capacity in the processing line. .

In the surface treatment apparatus of the invention according to claim 4,
The conveyance speed when the guide member and a part of the long metal sheet are conveyed in the non-processing portion is changed to the conveyance speed when the metal sheet is conveyed in the etching processing portion and subjected to the etching process. Is made faster than the transport speed when transported in the etching processing section,
It is possible to shorten the time required for putting the metal sheet into the etching line, and it is possible to improve the production capacity in the etching line.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an apparatus for etching a long metal thin plate.

FIG. 2 is a plan view showing a connection portion between a starting end side of a thin metal plate and a guide belt.

FIG. 3 is a block diagram showing an example of a speed switching mechanism of the etching apparatus according to the present invention, together with a side view of a connecting portion between a starting end of a thin metal plate and a guide belt.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 material coil 12 long metal thin plate 14 unwinding part 16 buffer part 18 recoating part 20 face-out part 22 etching processing part 24 main drive roller 30 guide belt 34 light detection sensor 38 CPU 44 controller 46 roller driving motor

Claims (4)

[Claims] 1. A processing line comprising a non-processing section and at least one surface processing section arranged in series in a predetermined direction, and a long material is conveyed in the longitudinal direction along the processing line. A surface treatment of the long material, which has a conveying means and guides the long material by a long guide member connected to the starting end side of the long material when the long material is charged into the processing line. In the apparatus, detecting means for detecting that the guide member has been conveyed in the processing line and the starting end of the long material guided by the guide member has passed through the non-processing part, and output from the detecting means And a speed switching means for controlling the transport means in accordance with the detection signal to switch the transport speed of the long material. 2. The conveying speed of the long material until the starting end of the long material guided by the guide member has passed through the non-processing portion is increased, and the starting end of the long material has passed through the non-processing portion. 2. The long material surface treating apparatus according to claim 1, wherein the speed switching means switches the transport speed of the long material to a low speed at a point in time when the detection is detected by the detecting means. 3. The surface treating apparatus for a long material according to claim 1, wherein the non-processing unit has a buffer unit for storing the long material. 4. The etching unit according to claim 1, wherein the surface treatment unit performs an etching process by supplying an etching solution to a long material made of a thin metal plate having a resist film having a predetermined pattern formed on a main surface thereof. The surface treatment device for a long material according to claim 3.