KR101145565B1 - Angle can be adjusted using a portion of the ink jet coating method and the ink jet coating angle adjustment - Google Patents

Abstract

PURPOSE: A partial plating method using angle-controlled ink jet and an ink jet angle control device for the same are provided to set the minimum and maximum ink jet ranges and to remove the need for a nickel barrier process in an automated reel-to-reel plating line. CONSTITUTION: A partial plating method using angle-controlled ink jet comprises the steps of: supplying a raw material such as a lead frame(S1), degreasing organic materials of the raw material(S2,S3), neutralizing the raw material with washing liquid(S4), plating nickel on the washed material(S5), drying the plated material(S6), masking the dried material with ink(S7), drying the ink on the material(S8), plating gold on the material(S9), delaminating the ink from the plated material(S10), post-processing the material(S11), and drying the post-processed material(S12).

Description

Angle can be adjusted using a portion of the ink jet coating method and the ink jet coating angle adjustment}

The present invention relates to a partial plating method and an ink spraying angle adjusting device using an ink spray capable of adjusting the angle, and more particularly, to check the spraying angle, the spraying range, and the spraying amount of ink through the display device during the partial plating of the plated body. Therefore, the front, back and side of the plated body as well as the curved part can be masked in three dimensions, and the spraying range can be sprayed by setting the minimum and maximum range, so there is no restriction on the size or pattern of the part to be masked. Of course, the present invention relates to a partial plating method and an ink spraying angle adjusting device using ink spraying, which is installed on a reel to reel automated plating line, so that the nickel barrier process does not require an angle adjustment.

In general, the plating is electroplating, chemical plating, hot-dip plating, etc., where the electroplating is a thin film of the plated metal on the surface by using the principle of electrolysis, and is performed for various purposes such as decoration or anti-rusting function. In addition to being inexpensive and providing an appropriate metal coating, it is applied to many fields such as automobiles, acoustic devices, aircraft, communication devices, computer parts, and electronic devices as well as simple decoration.

Printed circuit boards and semiconductor lead materials used in electronic devices are made of copper or copper alloy, so that surface corrosion occurs easily, and gold plating is used to prevent corrosion.

The gold plating as described above is partially plated because the rise of product cost or the surface of the plate may have a functional adverse effect, and the plating is performed only on a part of the surface of the article.

These partial plating methods include partial deposition method of partially immersing the plated body in a plating solution, a masking method of plating by attaching something like a masking tape, a brush method of plating only a desired portion of the plated body, and spraying to spray the plating solution. Various methods such as the method are used.

However, the above method has a problem in that the partial plating part is not clear or workability is deteriorated by hand, and the jig tool is manufactured separately or only the front and rear surfaces of the plated body are ink masked and various patterns cannot be inked.

In order to compensate for these problems, a method of ink masking by an inkjet printer has been proposed, but also, there is a problem that ink is masked only on the front and rear surfaces and ink printing is difficult on the side.

In addition, there is a problem in that lead angle may occur because ink masking is not possible in a curved portion such as a bent inside of a plated body due to a limitation in setting an angle of the print nozzle.

Accordingly, the present invention has been made in view of the above-mentioned problems of the prior art, and checks the spray angle, the spray range, and the spray amount of the ink through the display device during the partial plating of the plated body. The nozzle can be adjusted to mask the side as well as the curved part in three dimensions, and the spraying range can be sprayed by setting the minimum range and the maximum range, so there are no restrictions on the size or pattern of the masking part. (Reel to Reel) The purpose of the present invention is to provide a partial plating method and an ink spraying angle adjusting device using ink spraying, which can be installed in an automated plating line, so that the nickel barrier process is unnecessary.

In order to achieve the above object, the present invention provides an ultrasonic step for removing the organic material of the raw material supplied through the supply step (S1) and the raw material supplied through the supply step vertically in the bobbin wound the raw material Step (S2), the electrolytic degreasing step (S3) for removing the organic material contained in the raw material in the degreasing solution in the degreasing tank containing the raw material passed through the ultrasonic degreasing step (S3) and the organic material in the electrolytic degreasing step The pickling step (S4) of neutralizing the removed raw material and pickling the degreasing solution in the pickling liquid in the first and second steps, and the nickel-less plating step of plating the raw material washed with the nickel in the pickling step (S5), Drying step (S6) to dry the nickel-plated raw material through the nickel base plating step to prevent the spread of ink during ink spraying (S6), and before, after, side, etc. of the dried nickel-plated raw material Angle Ink masking step (S7) for spraying ink through the nozzles cut, and the ink drying step (S8) to prevent ink smear by drying the ink masked ink through the ink masking step, and through the ink drying step Gold plating step (S9) to partially gold-plated portions other than the ink masked portion on the ink-masked metal raw material, and ink masking removing step of peeling the ink masked portion of the partially gold-plated raw material in the gold plating step through a neutral degreasing agent (S10), a post-treatment step (S11) of sealing the surface of the raw material in order to enhance discoloration prevention and corrosion resistance of the gold-plated portion of the raw material of the ink masking is removed, and the metal after the post-treatment process Provided is a partial plating method using ink spraying, characterized in that the final drying step (S12) for the final drying of the raw material.

In addition, the degreasing solution in the electrolytic degreasing step (S3) provides a partial plating method using ink spraying, characterized in that 3.5% by weight of sodium hydroxide is mixed with 1 liter of the degreasing solution.

The pickling solution of the pickling step (S4) as described above provides a partial plating method using ink spraying, characterized in that 8% by weight of sulfuric acid is mixed with one liter of washing liquid.

On the other hand, after the ink masking step (S7) further comprises the monitoring step (S7-1) to determine whether the ink masking is not only the plane of the raw material but also the bent portion, and according to the determination result, the distance and height of the nozzle It provides a partial plating method using the ink spray, characterized in that it further comprises a nozzle adjustment step (S7-2) for adjusting the angle.

In addition, in order to plate by the above method, the raw material is fixed to the upper side of the raw material to be supplied horizontally for ink masking the upper and lower sides, and the angle adjusting unit for adjusting the horizontal angle of the horizontally supplied raw material, and the angle control A nozzle portion formed with a printing nozzle for injecting ink so as to mask ink on the upper and lower surfaces of the raw material angle-adjusted by the negative portion, and the height of the ink masking of the raw material masked through the printing nozzle of the nozzle portion is adjusted. In order to adjust the height of the raw material and the printing nozzle to adjust the height of the printing nozzle, and formed on the lower side of the height adjusting portion to adjust the position of the masking by adjusting the distance between the raw material and the printing nozzle Ink spray angle, characterized in that consisting of the distance adjusting portion connected to the fixing bracket formed on the upper plate It provides a control device.

The angle adjusting unit forms a fixing bracket having a fixing hole that is fixed or released by a fixing screw on both sides of the upper surface of the plate, and guides the raw material to the rotating rod outer diameter while the rotating rod is arranged in the fixing hole of the fixing bracket. It provides an ink injection angle adjusting device, characterized in that the base is formed and the rotary roller is formed on both sides of the guide.

The height adjusting part may include a guide protrusion formed on a rear surface of the nozzle bracket on which the printing nozzle of the nozzle unit is fixed to the front, a rack gear on the rear surface of the guide protrusion, and a guide groove formed to guide the guide protrusion of the nozzle bracket. Is coupled to the guide block on one side is engaged with the rack gear provides an ink spray angle adjusting device, characterized in that the handle is formed rotatably formed on the end of the handle to raise and lower the nozzle bracket.

The distance adjusting part forms a connecting gear at one end of one side of the fixing bracket, forms a rotating rod having a spiral in the outer diameter, and is engaged with the rotating rod to be slid from the upper side of the fixing bracket by the rotation of the rotating rod to fix the bottom surface of the height adjusting part. It provides an ink jet angle adjusting device to form a moving piece is formed to be rotatable on the bottom surface of the adjustment handle connecting the connecting gear to the gear belt to rotate the rotating rod.

As described above, the present invention can three-dimensionally mask the front, rear and side surfaces of the plated body as well as curved portions by checking the spray angle, spray range, and spray amount of ink through a display device installed in the plating line. The nozzle can be adjusted to simplify the process.

In addition, the spraying range can be sprayed by setting the minimum range and the maximum range, so there is no limit on the size or pattern of the part to be masked, which can improve the lead rise prevention function and can be installed on the reel to reel automation plating line. Nickel Barrier process is unnecessary, so the process can be simplified.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Various changes and modifications may be made by those skilled in the art.

1 is a block diagram showing a partial plating method using an angle-adjustable ink spray according to the present invention,
Figure 2 is a block diagram showing another embodiment of the partial plating method using an angle-adjustable ink spray according to the present invention,
Figure 3 is a perspective view of the ink jet angle adjusting apparatus according to the present invention,
Figure 4 is a perspective view showing an angle adjusting portion of the ink jet angle adjusting device according to the present invention,
Figure 5 is a perspective view showing a height adjusting unit and a distance adjusting unit of the ink jet angle adjusting device according to the present invention,
6 is an application state perspective view of an ink jet angle adjusting device according to the present invention;
7 is a perspective view of a state in which a plurality of ink injection angle adjusting device according to the present invention is applied,
8 is a front view of a state in which a plurality of ink injection angle adjusting device according to the present invention is applied,
9 is a perspective view showing a state in which the ink injection angle adjusting device according to the present invention is applied to the partial plating device,
10 is a front view showing a partially plated lead frame using the method and the partial plating method using the ink jetting angle adjustable in accordance with the present invention.

In order to fully understand the present invention, the advantages of the operability of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings showing preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in more detail with reference to specific embodiments of the present invention. The following examples are merely provided to explain the present invention in more detail, whereby the technical scope of the present invention is not limited.

(Example)

1 is a block diagram illustrating a partial plating method using an angle-adjustable ink spraying according to the present invention, and FIG. 2 is a view showing another embodiment of the partial plating method using an angle-adjustable ink spraying according to the present invention. It is a block diagram.

As shown here, the partial plating method using the ink spraying angle control of the present invention is a supply step (S1) for supplying the raw material such as lead frame, and the ultrasonic degreasing step for degreasing the organic material of the supplied raw material ( S2) and electrolytic degreasing step (S3), a pickling step (S4) for neutralizing the degreased raw material with a pickling solution, a nickel-less plating step (S5) for nickel plating the washed raw material, and a plated raw material Drying step (S6) for drying the, ink masking step (S7) for masking the ink on the nickel-plated raw material and ink drying step (S8) for drying the ink on the raw material subjected to the ink masking step, and drying Gold plating step (S9) for gold plating the raw material, ink masking removal step (S10) for peeling the ink on the gold-plated raw material, a post-treatment step (S11) for post-processing the plated raw material, and post-treatment It consists of a final drying step (S12) for drying the raw materials.

In the supplying step S1, the lead frame is vertically supplied by a plurality of supply rollers by releasing the raw material from the bobbin in which the raw material of the lead frame is wound.

The organic material trapped in the raw material of the lead frame supplied in this way is removed through ultrasonic waves generated by applying electricity to the vibrator by the ultrasonic degreasing step (S2).

In addition, through the electrolytic degreasing step (S3) to remove the organic material contained in the raw material in the degreasing solution containing the raw material passed through the ultrasonic degreasing step (S2) in the degreasing tank 1,2, 3rd.

The degreasing liquid is characterized in that 1 liter of degreasing liquid contains sodium hydroxide 3.5% by weight.

In order to neutralize the raw material of the lead frame thus degreased through the pickling step (S4), a pickling solution containing 8% by weight of sulfuric acid is used in one liter of the pickling solution.

Nickel-based plating of the raw material of the lead frame through the nickel-based plating step (S5) of the raw material washed in the pickling step (S4).

At this time, in order to do nickel plating, a plating solution containing 400 to 700 ml of sulfamic acid, 15 to 30 g of nickel chloride, and 50 g of boric acid is used per liter of the plating solution.

In this way, the nickel-plated raw material is dried through a drying step (S6) of drying the nickel-plated raw material at a temperature of 80 to 100 degrees at a time of 5 to 10 seconds through the nickel base plating step, and the ink bleeds when ink is sprayed onto the nickel-plated lead frame raw material. To prevent.

The ink is masked by spraying ink through the ink masking step S7 on the dried nickel plated raw material.

The ink masking is masked to the curved portion by adjusting the angle of the nozzle before, after, side.

The side masking of the ink masking overlaps the ink during the front and rear ink masking, and thus the side is masked, and the curved part may be masked by adjusting the angle of the nozzle to prevent lead rise that may spread to the side or the curved part. have.

The ink masked ink through the ink masking step (S7) as described above is dried through the ink drying step (S8) to prevent ink bleeding, and through the gold plating step (S9) on the ink masked metal source material through the ink drying step Partially gold-plated parts except the ink masked part.

In the gold plating step, gold plating is preferably performed through a solution containing about 5 to 10 g of potassium cyanide potassium PGA (Potassium Gold Cyanide) in a gold plating solution.

Preferably, the gold plating step (S9) is carried out one to two times, and in order to remove the ink masked part, the ink masked part of the gold-plated raw material is removed through the neutral degreasing agent through the ink masking removing step (S10). do.

Meanwhile, as described above, the surface of the raw material is sealed to prevent discoloration and corrosion resistance of the gold-plated portion through the post-processing step (S11).

The post-treatment solution used in the post-treatment step is preferably 90 wt% of water to 10 wt% of surfactant.

The metal raw material that has undergone the post-treatment process is finally dried through a final drying process (S12) at a temperature of about 90 to 120 degrees for about 15 to 20 seconds, and washed with water to wash the metal raw material between the processes. It is preferred to include the step.

As the partial plating method using the ink spray as described above, as shown in FIG. 2, the ink masking step S7 is further included, followed by a display step S7-1. It is possible to complete the ink masking as shown in FIG. 3 further includes a nozzle adjusting step (S7-2) of determining whether the masking is performed and adjusting the distance, height, and angle of the nozzle according to the determination result. It can form lead to prevent lead rise.

With this partial plating method, you can mask the front, back, side, and curved parts of the parts, as well as the angle, range, and injection volume of the ink spray nozzles while looking at the display device in the plating line. Ink masking is abominable afterwards.

In addition, the range of ink masking, that is, the range of the requerel barrier, can be formed as 0.3 ~ 0.5mm to prevent lead rise during the reflow process and to install the masking equipment during the reel to reel process. Productivity can be generated.

In addition, Figure 3 is a perspective view showing an ink jet angle adjusting device according to the present invention, Figure 4 is a perspective view showing an angle adjusting portion of the ink jet angle adjusting device according to the present invention, Figure 5 is a spraying ink according to the present invention It is a perspective view which shows the height adjusting part and the distance adjusting part of an angle adjusting device.

As shown therein, the ink injection angle adjusting device of the present invention includes an angle adjusting unit 10 for adjusting the horizontal angle of the raw material, a nozzle unit 20 for ink masking the angle-adjusted raw material, and the nozzle unit 20. Height adjustment unit 30 for adjusting the height of the) and the distance adjusting unit 40 is fixed to the height adjustment unit 30 to move back and forth.

The angle adjusting unit 10 is horizontally supplied so that the raw material 12 is fixed to the plate 11 and supplied to the horizontal, so as to mask the ink to the upper and lower sides, the horizontal angle of the raw material 12 is supplied horizontally Adjust

The angle adjusting unit 10 is fixed to the fixing bracket (15) formed with a fixing hole (14) fixed or released by fixing screws (13) on both sides of the plate (11) and the fixing bracket (15) of In the fixing hole 14, the rotating rod 16 is laid out, and the outer diameter of the rotating rod 16 forms guide guides 17 for guiding the raw material 12, and the rotary rollers 18 are formed on both sides of the guide 17. ).

The nozzle unit 20 is formed to allow ink masking on the upper and lower surfaces of the raw material 12 which is angle-adjusted by the angle adjusting unit 10, and the nozzle unit 20 prints the ink to spray ink. It is formed by the nozzle 21.

Printing nozzle to adjust the height of the raw material 12 and the printing nozzle 21 in order to adjust the height of the ink masking of the raw material 12, the ink masked through the printing nozzle 21 of the nozzle unit 20 To form a height adjusting portion 30 is fixed to (21).

The height adjustment unit 30 is formed with a guide protrusion 32 on the back of the nozzle bracket 31 to which the printing nozzle 21 of the nozzle unit 20 is fixed to the front and the rack gear on the back of the guide protrusion 32 A guide gear 35 having a guide groove 34 is formed to form 33 and guide the guide protrusion 32 of the nozzle bracket 31 to the rack gear 33 on one side of the guide block 35. ) Is rotatably formed to form a handle (36) formed at the end of the gear bracket so as to raise and lower the nozzle bracket (31).

The distance connected to the fixing bracket 41 formed on the upper side of the plate 11 to adjust the position of the masking by adjusting the distance between the raw material 12 and the printing nozzle 21 in the lower side of the height adjustment unit 30 Form the adjusting unit 40.

The distance adjusting part 40 is formed on one side of the fixed bracket 41, the connecting gear 42 at one end, and forms a rotating rod 43 having a spiral formed in the outer diameter and is engaged with the rotating rod 43, the rotating rod 43 By sliding of the upper side of the fixed bracket (41) to form a moving piece (44) is fixed to the bottom surface of the height adjusting portion 30 to move forward and backward, and the connecting gear 42 to rotate the rotating rod (43) Control handle 46 is connected to the gear belt 45 to form a rotatable on the bottom surface of the plate (11).

Referring to the operation and effects of the ink injection angle control device configured as described above are as follows.

First, the raw material 12 supplied through the angle adjusting unit 10 is moved horizontally between the rotary rollers 18 by a pair of rotary rollers 18 while moving to the angle adjusting unit 10.

In this state, in order to direct the angle of the rotary roller 18 to a desired angle upward and downward, the fixing screw 13 of the fixing bracket 15 is released and inserted into the fixing hole 16 of the fixing bracket 15. After rotating the rotating rod 16 to adjust the angle of the guide 17, tighten the fixing screw 13 to set the angle.

In this state, in order to adjust the printing nozzle to the position of the raw material 12, the adjusting handle 46 protruding in front of the plate 11 is rotated forward and backward to rotate the connecting gear 42 by the gear belt 45. When the rotating rod 43 is rotated to move the moving piece 44 in the fixed bracket 41 to adjust the position of the distance.

In addition, in order to adjust the height and the height of the printing nozzle 21, by rotating the handle 36 formed on the guide block 35 of the height adjusting section 30 is a rack gear that is engaged to the end of the handle 36 ( 33, the guide protrusion 32 is slid from the guide groove 34 to raise and lower the nozzle bracket 31 to adjust the height of the printing nozzle 21.

Therefore, by installing a plurality of the angle adjusting device as well as the bent product, it is possible to ink mask the upper and lower sides of the raw material 12.

S1: supply step S2: ultrasonic degreasing step
S3: electrolytic degreasing step S4: pickling step
S5: nickel base plating step and S6: drying step
S7: Ink masking step S8: Ink drying step
S9: Gold Plating Step S10: Ink Masking Removal Step
S11: Post-Processing Step S12: Final Drying Step

Claims (8)

delete delete delete delete An angle adjusting unit 10 for horizontally supplying the raw material 12 fixed and fixed to the upper part of the plate 11 so as to ink mask the upper and lower surfaces thereof, and adjusting the horizontal angle of the horizontally supplied raw material 12. ,
A nozzle unit 20 having a printing nozzle 21 for injecting ink so that ink can be masked on the upper and lower surfaces of the raw material 12 which is angle-adjusted by the angle adjusting unit 10;
Printing nozzle to adjust the height of the raw material 12 and the printing nozzle 21 in order to adjust the ink masking height of the raw material 12, the ink masked through the printing nozzle 21 of the nozzle unit 20 And height adjustment unit 30 is fixed to 21,
The distance connected to the fixing bracket 41 formed on the upper side of the plate 11 to adjust the position of the masking by adjusting the distance between the raw material 12 and the printing nozzle 21 in the lower side of the height adjustment unit 30 In the ink injection angle adjusting device, characterized in that consisting of the adjusting unit 40,
The angle adjusting unit 10 forms a fixing bracket 15 having a fixing hole 14 fixed or released by fixing screws 13 on both sides of the upper surface of the plate 11 and the fixing bracket 15 of the fixing bracket 15. In the fixing hole 14, the rotary rod 16 is laid out, but the guide rod 17 for guiding the raw material 12 is formed at the outer diameter of the rotary rod 16, and the rotary roller 18 is formed on both sides of the guide 17. Ink jetting angle adjusting device, characterized in that formed (). delete The method of claim 5, wherein the height adjustment unit 30 is formed with a guide protrusion 32 on the back surface of the nozzle bracket 31 to which the printing nozzle 21 of the nozzle unit 20 is fixed to the front and the guide protrusion 32 The rear of the rack gear 33 forms a guide block (35) formed with a guide groove (34) to guide the guide projection 32 of the nozzle bracket 31 is inserted into the guide block (35) one side The ink jetting angle adjusting device, characterized in that the gear 36 is rotatably formed to be engaged with the rack gear (33) to raise and lower the nozzle bracket (31). The method of claim 5, wherein the distance adjusting portion 40 is formed on one side of the fixed bracket 41, the connecting gear 42 at one end and the rotating rod 43 is formed on the outer diameter of the spiral bar and is engaged with the rotating rod 43 And the bottom surface of the height adjusting part 30 is fixed so as to slide back and forth by the upper side of the fixing bracket 41 by the rotation of the rotating bar 43, and to connect the rotating bar 43 to rotate. Ink steering angle adjusting device, characterized in that the adjustment handle 46 is connected to the gear belt 45 by the gear belt 45 is formed to rotate on the bottom of the plate (11).

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