JPS63213693A - High-speed plating method and apparatus - Google Patents

Abstract

PURPOSE:To control curling and waving and to enable precise partial plating by high-speed continuous treatment, by drawing a coiled work, twisting it from a horizontal state to a vertical state, accurately setting plating positions during travelling and carrying out high-speed plating. CONSTITUTION:This high-speed plating apparatus is composed essentially of an uncoiler 31 for drawing a work W, a power supply unit 33, guide rollers 34 for positioning the work W, a plating unit 36 and a work driving unit 38 for holding and travelling the work W. The beltlike long-sized work W is twisted to a vertical state by twisting rollers 32, electric current is supplied to the work W and the work W is pretreated with pretreating and preplating units and plated. The placed work W is held between the soft elastic endless belts of the unit 38 and travelled under tension.

Description

[Detailed Description of the Invention] Object of the Invention (Industrial Field of Application) The present invention is for partially plating a large number of workpieces connected in series at high speed. A high-speed plating method and device that maintains a high degree of efficiency and quality by controlling the high-speed movement, reliable power supply, and accurate positioning of the workpiece in conjunction with the plating of precious metals, etc., on minute portions of a large number of connector terminals. Regarding.

(Prior art) General electronic devices are required to be smaller and lighter.
As a result, it has become essential for each component used inside the device to be smaller and more densely packaged.

For example, connectors used to connect multiple printed circuit boards or electronic devices have moved from a pitch of 2.54 mg to one with even smaller pitches, and the terminals arranged inside It has a smaller size, and its conductive parts are plated with a noble metal such as gold to reduce contact resistance.

However, since the above-mentioned precious metal plating is quite expensive in material cost, partial plating is usually carried out only on the necessary parts.

In addition, the terminal is processed by high-speed press processing using a phosphor bronze strip or the like using a head-feed die. A terminal 3 is formed on the carrier 2 with a partial connecting portion 4 remaining, and a notch 5 is formed in the connecting portion 4 so that it can be easily folded from there. It is rolled up.

When assembling the connector, an automatic machine feeds the terminal 3 cut off from the notch 5 into a plastic molded housing (not shown).

Therefore, when partially plating a part of the terminal 3 as described above, the coil in which a large number of terminals 3 are connected to the carrier 2 is pulled straight, the predetermined part to be plated is transferred to the plating equipment, and the part to be plated is transferred to the plating device. After partially plating, it must be wound into a coil again.

Below is a partial explanation of this type of method that has traditionally been implemented.

A specific example of the production method will be explained based on FIG. 2 and subsequent figures. Note that the object to be plated, such as a terminal, will be referred to as a workpiece W hereinafter.

The entire process consists of a feed-out reel 7 on which the pressed coil 6 is hung and fed out, a power supply section 8 that contacts the workpiece W and supplies power to it, and a pre-treatment for plating the workpiece W as well as base plating. A pre-treatment and base plating treatment stage 9, a partial plating treatment stage 10 for partially plating a predetermined portion of the workpiece W with a noble metal such as gold, and a post-treatment after partial plating.

A post-processing stage 11, a drive unit 12 that grips and pulls the work W
, and a take-up reel 13 that winds up the plated workpiece W into a coil.

To explain each stage in detail, first, the workpiece W unwound from the unwinding reel 7 is wound onto the winding reel 13 at the end via the roller 14. The workpiece W is suspended horizontally over a period of time, and various processes are performed during this period.

The next power supply section 8 is connected to the work guide 1 as shown in FIG.
5 is arranged to maintain the horizontality of the workpiece W, and a pair of upper and lower metal power supply rollers 8a and 8b adjacent to the workpiece W is held and rotated, and while in line contact with the workpiece W, the metal A predetermined voltage and current can be applied to the workpiece W via the power supply rollers 8&, 8b.

The next stage, pre-treatment and base plating stage 9, has a degreasing liquid tank 16, a water tank 17, a strong acid liquid tank 18 such as hydrochloric acid, and the work guide 15 installed in series, and the work W is in a horizontal state. While being held in water, it is sequentially immersed in various types of water, and subjected to preliminary treatments of degreasing, washing with water, and pickling.

In addition, in the latter stage, the power supply section 8, work guide 15, nickel plating liquid tank 19, and cleaning liquid tank 20 are arranged in series, and the second layer, which is the base plating, is connected. / Kel plating treatment and subsequent treatment are performed.

In the next partial plating stage 10, the terminal 3 is partially plated with a noble metal such as gold.Generally, the part to be plated is set as a cathode pole, and the plating liquid is applied to the part to be plated from a nozzle with a single anode pole. A plating processing device 21 that injects water toward the target, a work guide 915, and a power supply section 8 are connected in series.

Furthermore, the post-plating treatment stage 11 is provided with a washing section 22 and a drying section 23 for finishing the plating.

The next stage drive section 12 includes a pair of large rollers 24.
．． 250, and the large roller 2
The workpiece W is pulled by rotating the shaft at a speed of 4.25, and a certain tension is applied to the workpieces W located at each stage of the plating line while the workpieces are transferred. The work W is wound up into a coil again.

When performing continuous plating in this way, the rollers at each stage are
It is necessary to avoid directly pinching and deforming the part to be plated. For example, in the case of the terminal 3 shown in FIG. 1, the carrier 2 is pinched and transferred.

(Problems to be Solved by the Invention) However, in the case of continuous plating processing using the above-mentioned conventional means, there are the following problems.

First, during continuous plating, the work W is transversely transported 9 in a horizontal state, which tends to cause loosening, making it difficult to accurately position the work, making precise plating impossible.

In particular, if slack occurs in the degreasing or plating solution tank, the electrolytic degreasing or base plating will become uneven in the electrolytic degreasing or base plating process, making high-quality plating impossible.

Furthermore, if a long workpiece is slack, a large amount of processing liquid from each process will adhere to it and be carried out of the tank, often diluting or neutralizing the liquid in the adjacent tank, which will reduce the yield of the plating process. It was bad.

In addition, since continuous plating equipment has a large number of processing stages, rollers, work guides, etc. as mentioned above, the total length is several tens of meters, and the workpiece W is inevitably fed out to that length. It is quite difficult to hold the entire length horizontally and taut.

In particular, coil material is prone to curling, waviness, twisting, and loosening, and this condition becomes more pronounced as the length of the workpiece is extended. Therefore, when the workpiece W is transferred at high speed, it may cause vertical vibration or horizontal misalignment. , there will be a large amount of slip, and the positioning accuracy of each stage will be significantly reduced.

For example, the conventional work guide 915 includes a guide roller 15 & in which a guide groove corresponding to the width of the work W is formed as shown in FIG. It is composed of a pressure roller 15c which is biased, and the pressure roller 15c is designed to press the top of the workpiece W passed through the guide roller 15 and inside.

However, as mentioned above, depending on the state of the workpiece W,
It is easy to dislodge from the work guide 15, and it is difficult to reliably control the degree of freedom, especially in the vertical direction.
Since it is dedicated for each process, there is also the problem that it takes a lot of setup time when changing the workpiece W or process.

In addition, as mentioned above, when partial plating using precious metals such as gold as a base material is performed in a very short time and in large quantities, the plating must be performed on a predetermined area of the part to be plated in a very small area. Because accurate positioning is essential,
With conventional methods, it is difficult to process precision partial plating at high speed.

However, accidents may occur in which the workpiece W loosens due to its own weight and comes into contact with the surface of a device or the like, damaging the workpiece W.

Of course, it is possible to maintain the flatness of the workpiece W by arranging a large number of workpiece guides and rollers in parallel, but this inevitably increases the contact between the workpiece W and these and the frictional resistance. However, there are problems such as damage to the workpiece W, increase in the driving force of the device and the size of the entire device, and other troubles.

Furthermore, when supplying power, metal plate power supply rollers 8a and 8b are used.
Since the work W is energized in a line contact state, the contact resistance is high and the amount of Joule heat generated cannot be ignored.

In particular, the larger the plating current is, the higher the Joule heat becomes.
Dust in the air, fats and oils in the processing liquid, base substances, etc. adhering to the surfaces of the metal power supply rollers 8a and 8b and the surface of the workpiece W are carbonized to form an insulating film, which further increases the contact resistance. In addition, problems such as roughening of the surfaces of the metal power supply rollers 8g, 8b and the workpiece W tend to occur.

In addition, the metal power supply rollers 8m and 8b must be prepared in advance because the holding force and amount of current will not be stable unless special ones are used depending on the shape and dimensions of the workpiece W. The man-hours involved in setting up the replacement and installation were also a great burden.

In addition, when driving the workpiece W in tension, the large rollers 24 and 25 are used to pull the workpiece W only by the frictional force of the wires in contact with each other as described above, so slipping is sure to occur if the load becomes even a little steep. Therefore, it is extremely difficult to transport a large workpiece W at high speed with one machine.

Furthermore, when performing continuous plating processing at high speed, coiled workpieces W must be replenished one after another, and when exchanging old and new coils, it is necessary to connect each end. It was inefficient because it either stopped or slowed down the processing speed.

Furthermore, while the pretreatment and base plating stages are continuous processing steps, the subsequent partial plating stage is an intermittent process, and it is important to maintain the timing between them.

For this reason, a monitoring worker had to control the throughput of the entire process in order to provide a certain amount of slack in the workpiece W between both processes and to maintain this at a certain amount, resulting in a burden on personnel and a decrease in work efficiency. etc. could not be avoided.

[Structure of the Invention] (Means for Solving the Problems) This invention was made in view of the various problems of slanting, and it is possible to twist a workpiece that has been fed horizontally by 90 degrees and turn it into a vertical state. The workpiece is then sandwiched horizontally and left and right, and power is supplied in surface contact.The horizontal and vertical degrees of freedom of the workpiece are controlled by at least three upright rollers to ensure accurate positioning. , pre-treatment and base plating, and partial plating of precious metals, etc. on predetermined locations of the base-plated workpiece, and the plated workpiece is held and pulled by a pair of endless belts made of soft elastic material. The structure is such that it is moved and driven, and finally returned 90 degrees to a horizontal state.

(Function) By horizontally transporting the workpiece in a vertical state, it becomes easy to tension the workpiece over a long distance and transport it at high speed, and since the processing liquid also tends to fall, the amount of liquid adhering to the workpiece is reduced.

In addition, since power is supplied in surface contact with the workpiece, the amount of heat generated due to the reduction in contact resistance is greatly suppressed, and it is therefore possible to pass a larger current, which improves plating. Processing efficiency and quality stabilization can be improved.

Furthermore, as a result of restricting the degrees of freedom of the continuously transferred workpiece in each of the horizontal and vertical directions, the positioning of the workpiece becomes accurate, and in particular, the precision of partial plating processing can be significantly improved.

Furthermore, since the workpiece is held between soft elastic bodies, the workpiece can be protected, reliably held, and have a strong tensile force, so that the workpiece can be transferred stably.

(Embodiment) Next, an embodiment of the present invention will be described based on FIG. ° A twisting roller 32 that twists and transfers;
A power supply device 33 that rubs against the workpiece W and applies a predetermined DC voltage and current thereto; a guide 90-ra 34 that regulates the position of the workpiece W during transfer; pre-treatment and base plating for applying base plating such as nickel to the workpiece W; A plating device 35, a partial plating device 36 for partially plating a specific part of the workpiece W to be plated with gold-plated precious metal, and a post-processing device 3 for performing post-processing after plating.
7. A work drive device that holds the work W and drives it in tension. A restoring roller 39 that returns the work W to its original horizontal state, and a coiler 40 that winds up the work W are installed in series.

Each stage will be explained in detail below.

First, the workpiece W according to this embodiment is a connector terminal shown in FIG. ing.

This coiled workpiece W is hung on an uncoiler 31 having a well-known reel structure, and the uncoiler 31 is rotated at an arbitrary rotational speed to sequentially feed out the workpieces W in a horizontal state. As shown in FIG. 6, the next-stage twisting roller 32 has a horizontal roller 41 that rotates on a horizontal axis and a vertical roller 42 that rotates on a vertical axis adjacent to each other so that they face each other at an angle of 90°. The horizontal work W is placed at 90'
Twist it vertically and feed it in stages.

Vertical transport in this manner makes it easier to control conditions that are disadvantageous to plating, such as curling and waviness, and also prevents the phenomenon of loosening during tensioning, making high-speed transport possible.

Next, in the power supply device shown in FIG.
' to bring it into a suppressed and clamped state from the horizontal left and right directions, and at the same time apply a predetermined DC voltage.

That is, one slider 43' is fixed on the stage,
A movable slider 43 is disposed opposite to it, and the opposing surfaces of both sliders 43 and 43' are formed flat, and when they come into close contact, they come into complete surface contact with the carrier 2 of the workpiece W. That's how it is.

The material is preferably the same as that of the workpiece W or a wear-resistant metal such as stainless steel.

A plurality of slide pins 44 are horizontally protruded from the movable slider 43, the other end of which passes through seven frames 45 on the stage, and a coil spring is mounted between the movable slider 43 and the frame 45. Due to the elastic force of 46, the fixed slider 43 is attached to the movable slider 43.
The pressing force in the direction of ' is always applied.

Of course, the fixed side slider 43' is also the movable side slider 4.
It is also possible to have the same configuration as 3, and to press both of them against each other by the elastic force of the coil spring.

The terminal end of the slide pin 44 is connected to one pole of the DC power supply.

With this configuration, the workpiece W is constantly rubbed between the sliders 43 and 43' under a constant holding force, and power is supplied in a surface contact state, so the contact resistance is extremely low and the joule Heat generation is suppressed, and a larger current can be passed accordingly.

Therefore, since the plating current can be made to have a high current density, the plating efficiency and plating quality can be greatly improved.

In addition, since the holding power of the workpiece W is high, a plurality of power supply devices 33 are installed in series (one before the base plating device 35 and the other in the partial plating device 3).
6), the work W between them is in a tensioned state with a predetermined tension, and even if only the carrier 2 is held and transferred, no slip phenomenon occurs at all.

By the way, in the case of the conventional roller power supply method mentioned above, the contact state is in the form of a line, so the power supplied to the soil, which tends to slip, cannot be sufficiently increased, so the plating processing time has to be lengthened (normally, the plating solution tank is kept longer). As a result, it was inevitable that the entire device would become longer and the work efficiency would decrease. In addition, in the case of line contact, if the workpiece W is transferred at high speed while passing through the workpiece W, the power supply surface of the roller becomes rough and the surface of the workpiece W is often damaged.

In addition, in the case of this embodiment, since the workpiece W is constantly wiped at a constant pressure, it is possible to remove foreign substances such as oil and fats and dust adhering to the surface, as well as substances that may have an adverse effect during plating processing, such as base substances and oxide film substances. Because it can be forcibly removed mechanically, and because the holding force and power feeding area of the conventional roller power feeding system is small, the outer diameter and placement position had to be changed for each type of workpiece.
In the case of this embodiment, since sufficient holding force and power feeding area can be ensured, there is also the advantage that a single slider 43, 43' can handle various types of workpieces W.

Furthermore, since the holding force of the workpiece W is strong, the workpiece W is in a tension state between it and the workpiece driving device 38, which will be described later.
Not only can it prevent problems such as damage caused by loosening and contacting other parts, but it can also be positioned accurately.

Next, in the case of this embodiment, the guide rollers 34 shown in FIG.
6, but it may be placed at any position as required. The necessity of the guide 30-ler 34 is because when the workpiece W, that is, the terminal 3, is press-formed, press-processing stress strain always remains. This may cause deformation such as screws or undulations, making it difficult to accurately position the workpiece W.
It is established for the purpose of regulating this.

The guide rollers 34 include three rollers erected so as to be rotatable about their respective shafts.
It consists of a set of rollers 47A, 47B, and 47C, and each roller 47A, 47B, and 47C is arranged so that its rotation axis is located at each vertex of a regular triangle or isosceles triangle on a horizontal plane. Yes, each roller 47A147B,
The outer peripheral surfaces of 47C are very close to each other.

The workpiece W has a gap between two adjacent rollers 47A and 47C located at the base of the triangle and another roller 47B located at the apex, and each roller 47A1.47B,
47C, which restricts the degree of freedom of the workpiece W in the horizontal and lateral directions.

In addition, each of the rollers 47A, 47B, and 47C has its rotation axis inclined inward by a desired angle (an inverted V shape when viewed from the side), so that the workpiece W that is progressively fed laterally in a vertical state can be tilted inward by a desired angle. The three rollers 47A, 47B, and 47C are covered from above, and when the moving work W floats up in the vertical direction, the upper edge of each roller 4
It can contact the outer peripheral surfaces of 7A, 47B, and 470 and prevent them from rising any further. As another means for regulating the degree of freedom of the workpiece W in the vertical direction, for example, as shown in FIG. in the same position as
Moreover, it may be installed vertically. In this case as well, the upper edge of the work W is prevented from floating upward by the tapered surfaces of the rollers 48A, 48B, and 48C, and can also be restricted in the horizontal and left-right directions.

In either case, regardless of the size and shape of the workpiece W, the degree of freedom in the horizontal direction can be reliably controlled by the three-point support by each roller, and the degree of freedom in the vertical direction can be reliably controlled by the workpiece clamping angle of each roller. This allows for stable work transfer, and
A single guide roller is applied to various types of workpieces W, making it versatile.

The next pre-treatment and base plating device 35 is the same as the conventional one described above, so its explanation will be omitted, but in the case of this embodiment, the workpiece W is fed progressively at high speed in a tensioned state and in a vertical state. During the degreasing, pickling, and water rinsing processes, it is possible to prevent troubles such as the respective liquid agents adhering to the workpiece W and being carried out of the tank, and thereby diluting or neutralizing the concentration of the liquid in the next tank. .

The next partial plating device 36 is related to the invention of Patent No. 1261266, and as shown in FIG. The mantle tube 5 forms a sealed space together with the mantle tube 5.
0, an intake mechanism 52 that communicates with an exhaust pipe 51 provided in the mantle tube 50, and a plating liquid injection nozzle arranged in the mantle tube 50 and connected to the ten poles of the DC power source. It is.

In addition, when partially plating the workpiece W at this stage, the workpiece W is first transferred to the upper surface of the mask 49 and then stopped, and the area to be plated is set by masking. A negative pressure state is maintained, and under this state, a plating solution is injected from the nozzle & to the area to be plated, thereby performing a minute partial plating process on a specific area.

The details of this partial plating processing means are disclosed in the above-mentioned known invention and will not be described here, but the movement of the workpiece W at this stage is intermittent.

However, since the partial plating process is completed in a very short time due to the use of negative pressure, it is easy to adjust the entire Lysono 5 lance, and this point will be more fully addressed in the examples described below. Covered.

Further, since the next-stage post-processing device 37 is the same as that of the conventional example, a description thereof will also be omitted.

Next, the workpiece drive device 38 will be explained with reference to FIG. 11 and subsequent figures.

The workpiece drive blades serve as a driving force source for continuously pulling and transporting the workpiece W held under pressure by the power supply device 33 at a predetermined speed.

That is, a pair of endless timing belts 54A and 54B are arranged on the stage of this stage so as to be able to grip the workpiece W transferred in a vertical state horizontally from left and right.
Each of the timing belts 57iA, 54B is wound around a drive gear group and a driven gear link, and is freely rotatable in the same direction.

The timing belts 54A and 54B have a multi-layer structure, and the inner layer is a gear belt 57 made of hard rubber and formed into an endless belt shape, and is able to mesh with the driving gear housing and the driven gear housing and rotate freely.

The outer layer is a sponge bell (58) formed into an endless belt shape from a soft elastic material such as a synthetic dam sponge, and is firmly attached to the outer periphery of the gear belt 57 so as to rotate together with it. be.

Furthermore, inside the timing belts 54A, 54B, that is, inside both belt gears 57, a plurality of push plates 59A, 59B each having a flat surface are arranged in parallel in a swingable state. The push plates 59A and 59B are pressed against each other while facing each other.

Note that the above timing is such that the bolts 54A, 54B are constantly pressed inward by roller marks disposed on the outside thereof, and the tension of the timing bells 54A, 54B is maintained at an appropriate level. That's how it is.

When transferring the workpiece W from left to right in the figure, the upper timing belt 54A rotates counterclockwise, and the lower timing belt 54B rotates clockwise to grip the workpiece W.

At this time, remove the outer soft sponge belts 54A and 54B.
presses the entire workpiece W from the left and right sides, but since the sponge part gets stuck in the uneven parts of the workpiece, the tensile force is enormous and there is no chance of slippage. It is.

Furthermore, since the pressing force on the workpiece W is evenly distributed through the soft sponge, deformation and damage can be reliably prevented.

As a result, even if the workpiece W is clamped in surface contact between the power supply devices, the tensile force of the workpiece drive device 38 is stronger, so that it is possible to protect the workpiece and reliably transport it at high speed.

In addition, regardless of the shape or size of the work W,
Since the workpiece is held in a manner that envelops the entire workpiece, a wide variety of workpieces W can be processed by a single workpiece driving device.

The workpiece W transferred as described above is returned from its vertical state to a horizontal state by the restoring roller 39 at the next stage.

The restoring roller 39 has the same roller wells as the twisting roller 32 connected in reverse order, and twists the vertical workpiece W by 90 degrees to the original position to bring it to the horizontal state, and moves it to the next stage. I plan to send it sequentially. The workpiece W returned horizontally in this way is moved to a coiler 4, which is a well-known rotating reel.
It is wound up by 0.

The restoring roller 39 may be installed before the partial plating device 36 to the post-processing device 37, and partial plating may be performed while the workpiece W is in a horizontal state.

Next, a second embodiment shown in FIG. 12 and subsequent figures will be described. This embodiment is basically the same as the first embodiment, but as mentioned above, this type of workpiece W has a large throughput and must be processed continuously at high speed for a long time. Must be.

Particularly in the case of high-speed plating, if the plating is not performed at a constant speed, the plating quality will deteriorate, but since there are limits to the weight and length of each coil, it is difficult to perform the plating continuously. Conventionally, when the supply of the work W approaches the end, the operator stops the line each time, removes the empty reel of the uncoiler 31, sets the next coil, and then inserts the end of the work W of the previous coil into the work of the new coil. Since it is connected to the starting end of the W, a decrease in work efficiency and quality is unavoidable. Particularly in high-speed plating processing, this coil replacement was quite frequent.

In this embodiment, as a countermeasure against this problem, a slack tower 61 is provided at the next stage of the coiler 31 and at the front stage of the uncoiler 40, and the portion of the total length of the line wound by the slack tower 61 acts as a damper. This is to ensure the connection time of the coil and to maintain a stable quality plating process.

That is, the stick tower 61 is a stay to which the workpiece W is transferred in a horizontal traverse state as shown in FIG.
A fixed roller 62 that can freely rotate on one axis, and a vertical axis (axis perpendicular to the line direction of the work W) of the fixed roller 62,
Predetermined distance! It has a configuration in which a pair of movable rollers 63A and 63B are arranged, which rotate at separate positions and are vertically movable. It is possible to leave.

The work W is being fed horizontally and is wound around the fixed roller 62 from the left side in the figure, then around the lower movable roller 63A, then around the lower movable roller 63B, and then again around the fixed roller. 62 to the right in the figure.

(See the arrows in the illustration) Normally, the upper and lower movable rollers 63A and 63B rotate on their respective axes at positions apart from each other.
When the speed at which the workpiece W is fed out from the workpiece W decreases or stops, the upper and lower movable rollers 63A and 63B approach each other toward the fixed roller 62 while being pulled by the workpiece W. For the work W in this stage, if the distance between the movable rollers 63A and 63B in the closest state is l', the difference in the distance l between the separated states, l -1', is secured as an extra length.

Therefore, even if the uncoiler 31 stops, this extra length is transferred to the next stage twisting roller 32 and power supply device 33, so during this time the next coil is set in the uncoiler 31 and the remaining length is By connecting with the front coil end,
Workpieces W can be continuously supplied without stopping the plating process line at all.

Of course, this extra length can be set by the arrangement interval of the movable rollers 63A and 63B and the outer diameter of each roller including the fixed roller 62, so it can be determined by taking into consideration the connection work time of the work W.

Also, this stick tower 6 is installed before the coiler 40 at the final stage.
1, the entire line balance can be kept constant.

Next, the third embodiment shown in FIG. 14 has the same basic configuration as the first embodiment, but it automatically detects and corrects line balance disturbances that require the most attention especially in the continuous plating process. It was designed to do so.

For example, as described above, the pretreatment and base plating device 35
There, the workpiece W is transferred continuously, but at the next stage, the partial plating device 36, it is transferred intermittently.
Since the line balance between the two films is easily lost, the workpiece W is always provided with a slack S before and after the partial plating device 36.

However, in high-speed plating processing, this slack S, that is, the extra length changes rapidly, making stable processing difficult.

As a countermeasure against this, in this embodiment, slack detection bags for detecting the slack S of the workpiece W are provided before and after the partial plating device 36. As shown in FIG. 15, the slack detection device is constructed by loosening the workpiece W by a predetermined length in advance, placing a figure 7-shaped guide pole 65 between which the slackened portion S is inserted, and attaching a laser beam to the guide pole 65. A rechargeable position sensor using a light emitting diode or the like is installed to detect the amount of slack, and the output of this position sensor mark is sent to the workpiece drive device 3.
It is used as a sequence control input signal for the rotation speed control section of No. 8, the plating current control section of the partial plating device 36, the work transfer timing control section of the amplifier puiler 31, the coiler 40, the strip tower 61, etc.

By doing this, the state of the slack S in the guide 9 pole group can be detected at all times, so that, for example, when the slack s1 of the workpiece W in the guide 9 pole group, that is, the extra length has decreased, the partial plating device 37 p which lowered the timing speed r
Measures such as increasing the plating current of the base plating device 35 to speed up the plating process or suppressing the speed of the workpiece drive device can be performed completely automatically.

By the way, in the past, the transfer speed of the entire workpiece W was controlled by the rotational speed of the pinch roller, so if there was a problem with partial line balance, it was necessary to rely on the manual trouble sheet by the line monitoring worker. However, in the present embodiment, it is possible to solve these problems.

As another embodiment, the partial plating device 36 for precision partial plating using negative pressure and the partial plating device 36' for general spray plating may be installed side by side to suit the type of workpiece or the object to be plated. There are some that can be used depending on the situation.

In this case, the overall basic configuration may be the same as that of the previous embodiments, but as shown in FIG. The partial plating device 36 and the general partial plating device 36' are arranged in parallel, and a separate second guide 10 is installed next to the partial plating device 36 and the general partial plating device 36'.
- roller 34 is disposed, and the twisting roller 32 and restoring roller 39 are disposed before and after each plating device.

With this configuration, any partial plating can be selected by simply changing the hooking of the workpiece W on one side.

(Effects of the Invention) As explained above, according to the present invention, a workpiece in the form of a long strip wound in a coil is twisted from horizontal to vertical and progressively fed, and the workpiece is moved by a pair of conductive sliders. The processing position is accurately set by supplying a predetermined power while holding the workpiece from the left and right, and regulating the degree of freedom of the horizontally left and right direction and vertically upward direction of the progressively fed workpiece. A pair of timing belts formed in
Since the base plate is plated and the area to be plated is partially plated, it has the following characteristics.

■ In the case of workpieces such as connector terminals, it is possible to control disadvantageous conditions for high-speed continuous plating processing such as curling, undulations, or meandering of strip-shaped raw materials, and also to accommodate the diversity of shapes and dimensions of the workpieces. It can be handled with a single system and has high versatility.

■ The vertical and horizontal positional deviation of progressively transported workpieces is constantly controlled, and accurate positioning in the partial plating processing station is performed, enabling high-speed processing of precision partial plating.

■ When holding or transferring long strip-shaped workpieces, there are no speed ratio changes such as slipping or unstable running, speed stabilization is quick at startup, and reliable workpiece holding, high-speed continuous transfer, and workpiece transfer are possible. This makes it possible to maintain the straightness of the workpiece, thereby making the workpiece positioning more reliable.

■ It is possible to supply a specified amount of power to workpieces that are continuously transferred at high speed in a surface contact state, suppressing electrical troubles such as gel heat, and maintaining a high current density of plating current, greatly shortening plating time and plating processing. Efficiency and plating quality can be significantly improved.

■ During the above power supply, the power-supplied surface of the workpiece is constantly wiped, which removes adhesion of foreign matter, oxides, bases, etc. that are disadvantageous during plating processing, and allows for a higher plating current density. becomes.

(2) Since the entire workpiece is kept under a predetermined tension while being continuously transferred at high speed, it is possible to prevent the workpiece from becoming loose due to its own weight and coming into contact with other parts of the apparatus and damaging the workpiece.

■ Even if the shape of the workpiece is easily deformed, when the workpiece is held and pulled, the holding force is distributed over the entire workpiece via the soft elastic material, and the soft elastic material is applied to the uneven parts of the workpiece. Since the workpiece is pulled in a cunning manner, there are no accidents such as deformation or damage to the workpiece.

■ When replacing a reel with a coiled workpiece wound with a new one, it is possible to connect both the old and new coil ends under continuous constant speed operation without reducing or stopping the running speed of the line, making it possible to ensure a stable connection between the old and new coil ends. Work supply is possible.

■ The amount of slack that occurs at the connection between intermittent partial plating and continuous base plating is automatically detected, and the plating processing time and wire transfer speed are automatically corrected based on the detection signal, so the overall The line balance can be maintained accurately.

0 Because the workpiece is transported vertically and horizontally,
The straightness of the workpiece is hard, so it is difficult to carry out the processing liquid at each stage out of the tank,
Dilution of the processing liquid can be suppressed.

In addition, as mentioned above, there is almost no slack in the workpiece, so
Workpiece transfer speed can be made extremely fast.

[Brief explanation of the drawing]

Fig. 1 is an explanatory perspective view of a workpiece, Fig. 2 is an explanatory diagram of a system related to conventional continuous plating processing means, Fig. 3 is a perspective view of a power supply part in the above system, and Fig. 4 is a perspective view of the same work guide. It is. Figure 5 and the following figures relate to embodiments of the present invention. Figure 5 is an explanatory diagram of a high-speed continuous plating system according to the first embodiment, and Figure 6 is a perspective view of a twisting roller in the same system. , FIG. 7 is a plan view of the power supply device in the above system, FIG. 8 is a perspective view of the roller guide in the above system, and FIG.
The figure is a perspective view showing another embodiment of the same roller guide as above,
FIG. 10 is a cross-sectional explanatory diagram of a partial plating device in the above system, FIG. 11 is a plan view of a workpiece drive device in the same system, and FIG. 12 is an explanation of a high-speed continuous plating system according to the second embodiment. Fig. 13(a) is a front explanatory view of the stick tower in the same system as above, Fig. 13(b) is a front explanatory view showing the operating state of the stick tower in the same system as above, -m-, Fig. 14 is an explanatory front view of the stick tower in the above system. An explanatory diagram of a high-speed continuous plating processing system according to the third embodiment, FIG. 15 is a front explanatory diagram of a slack detection device in the same system, and FIG. 16 is an explanatory diagram showing a plurality of partial plating processing means according to the fourth embodiment. It is a plating processing system diagram. W... Work 2... Carrier 3... Terminal 31... Uncoiler 32...
... a times o-ler 33 ...... Power supply device 34 ... Roller guide 935 ...
・・ Pre-treatment and base plating treatment equipment 36 ・・
... Partial plating processing device 37 ...
・ Post-processing device 38 ... Work drive device 39 ... Restoration roller 40 ... Coiler 41 ... Horizontal roller 42 ... Vertical roller 43 ... Movable side slider 43'...
・・・・・・ Fixed side slider 44 ・・・・・・
... Slide bin 45 ...-Frame 46 ...... Coil spring 47A
, 47B, 47C...Roller 4
8A, 48B, 48C...Roller 49
...... Mask 50 ...... Mantle pipe 51 ...... Exhaust pipe 52 ...... Intake mechanism 53 ...... Nozzle 54A, 54B... Timing belt 55
・・・・・・・・・ Drive gear I ・・・・・・・・・
Driven gear 57... Gear R route...
... Sponge belt 59A, 59B ...
・・・・・・Between push plates ・・・・・・・・・ Roller 61 ・・・・・・・・・ Stick tower 62
...Fixed rollers 63A, 63B ...
...... Movable roller S ...... Loose part 64 ...... Looseness detection device...
・・・・・・ Guide 9 balls closed ・・・・・・・・・
Sensor figure 15

Claims (9)

[Claims] (1) Means for positioning a long belt-shaped workpiece by horizontally feeding it in a vertical state and passing it between at least three rotatable rollers to restrict the degree of freedom of the workpiece in the vertical and lateral directions. a power supply means for supplying a predetermined plating current through at least a pair of power supply bodies that are in surface contact with both surfaces of the workpiece; and immersing the sequentially fed workpiece in a pretreatment solution and a plating solution to perform pretreatment and plating treatment on the workpiece. and a workpiece driving means for gripping the workpiece and transporting the workpiece by pulling it in one direction using at least a pair of rotatable endless belts made of a soft elastic material. (2) An uncoiler that feeds out a coiled workpiece and at least one conductive slider having a flat surface that makes surface contact with the workpiece are placed in opposition to each other, and power is supplied to the workpiece while the conductive slider holds the workpiece. a power feeding device for feeding the workpiece; a guide roller for positioning the workpiece by having at least three rollers each having an inwardly inclined outer peripheral surface erected close to each other and allowing the workpiece to pass between the rollers; A high-speed plating processing device consisting of a plating processing device that performs plating processing, and a workpiece drive device that includes at least a pair of timing belts formed into an endless belt shape made of a soft elastic material and arranged opposite each other so as to be able to rotate freely in the same direction, and that grips and transfers the workpiece. . (3) An uncoiler that feeds out a coiled workpiece and at least one conductive slider having a flat surface that makes surface contact with the workpiece are placed in opposition to each other, and power is supplied to the workpiece while the conductive slider holds the workpiece. a power feeding device for feeding the workpiece; a guide roller for positioning the workpiece by having at least three rollers each having an inwardly inclined outer peripheral surface erected close to each other and allowing the workpiece to pass between the rollers; A pretreatment and base plating treatment device that performs pretreatment and base plating treatment, a partial plating treatment device that sets a plating area on a workpiece that has already been plated and performs partial plating by spraying a predetermined plating solution there; A high-speed plating processing apparatus comprising at least a pair of timing belts formed in the shape of an endless belt made of an elastic material and arranged opposite each other so as to be able to freely rotate in the same direction, and a workpiece drive device that grips and transfers the workpieces. (4) An uncoiler that feeds out a workpiece wound into a coil, a fixed roller that can freely rotate, and a plurality of movable rollers that are arranged vertically so as to be movable up and down.The workpiece is wound around each roller, and the upper and lower movable rollers A slack tower that secures an extra length according to the amount of approach of the workpiece and at least one conductive slider having a flat surface that makes surface contact with the workpiece face each other, and power is supplied to the workpiece while the workpiece is held between the conductive sliders. A power feeding device, a guide roller for positioning the work by passing at least three rollers, each of which has an inwardly inclined outer circumferential surface, in close proximity to each other, and allowing the work to pass between the rollers; A high-speed plating processing apparatus comprising a plating processing apparatus for processing the workpiece, and a workpiece driving apparatus for holding and transporting the workpiece by having at least a pair of timing belts formed in the shape of an endless belt made of a soft elastic material arranged opposite each other so as to be able to freely rotate in the same direction. (5) An uncoiler that unwinds a coiled workpiece in a horizontal state, a roller that can freely rotate on a horizontal axis that guides a horizontal workpiece, and a 90-degree horizontal axis that guides the workpiece in a horizontal state.
゜ A twisting roller composed of a roller that can freely rotate on a vertical axis to twist the workpiece into a vertical state, and at least one pair of conductive sliders each having a flat surface that makes surface contact with the workpiece are opposed to each other, and the workpiece is held between the conductive sliders. However, a power supply device that supplies power to the power supply device, and a guide roller that positions the workpiece by having at least three rollers, each of which has an inwardly inclined outer circumferential surface, erected in close proximity to each other and passing the workpiece between the rollers; a plating processing device that performs plating on progressively fed workpieces; and a workpiece driving device that includes at least a pair of timing belts formed in the shape of an endless belt made of a soft elastic material and that are arranged opposite each other so as to be able to rotate freely in the same direction, and that grips and transfers the workpieces. ,
a slack detection device that has a sensor for detecting the amount of slack installed on guide poles arranged to sandwich the slack portion of the work, and sequentially controls the transfer speed of the work, the plating processing time, etc. based on the detection signal; and the twisting roller. A high-speed plating processing device consisting of a restoring roller having vertical rollers and horizontal rollers arranged in reverse order. (6) An uncoiler that feeds out a coiled workpiece and at least one conductive slider having a flat surface that makes surface contact with the workpiece face each other, and power is supplied to the workpiece while the conductive slider holds the workpiece. A power supply device for transporting the workpiece, and a workpiece driving device for holding and transporting the workpiece by rotating at least one pair of timing belts made of a soft elastic material in the same direction so as to rotate in the same direction and transporting the workpiece. A plurality of guide rollers are disposed between the drive device and at least three rollers, each of which has an outer circumferential surface inclined inward, that are erected in close proximity to each other, and that allow the workpiece to pass between the rollers and position the workpiece. This is a high-speed plating device in which a plurality of plating devices are installed in parallel between both guide rollers. (7) The above-mentioned three rotatable rollers each have a right cylindrical shape, and the rotation axes of each roller are brought close to each other by a predetermined distance, and the rotation axes of two of the rollers and the rotation axis of the other rollers are arranged close to each other by a predetermined distance. 7. A high-speed plating apparatus according to claims 2 to 6, characterized in that they are arranged so as to be inclined inwardly to press the upper edge of the workpiece. (8) The three rotatable rollers described above are each formed with a reverse tapered surface, and stand upright with the rotating shafts of each roller approaching each other by a predetermined distance. 7. The high-speed plating apparatus according to claim 2, wherein the roller is arranged so that the upper edge of the workpiece is pressed by the reversely tapered surface of the roller. (9) The power supply device described above has a pair of conductive sliders facing each other, each having a flat surface that makes surface contact with the workpiece, at least one of which is movable horizontally and a predetermined pressing force is applied to it, and both of which are movable horizontally. 7. The high-speed plating processing apparatus according to claim 2, wherein the workpiece is held by a conductive slider.