JPS60190600A - Partial plating device of long-sized metallic strip - Google Patents

Abstract

PURPOSE:To provide a titled device which supplies smoothly a strip by providing a sagging part to the strip in the stage of transferring the strip from a strip supply part to a continuous feed part of a pretreating stage for plating and synchronizing the let-off speed of the strip and the continuous feed speed of the pretreating part for plating. CONSTITUTION:A long-sized strip 12 wound on a reel 10 is let-off by a supply means A and while the strip is fed C continuously, the strip is subjected to a pretreatment for plating. The strip 12 is then fed intermittently and is subjected to partial plating D while the strip 12 is temporarily stopped. The strip 12 is subjected to a post treatment E for plating while the strip is again fed continuously. The treated strip 12 is wound on the reel 14 by a containing means G. A means for changing over the continuous feed and intermittent feed of the strip 12 with each other during this time, that is, a sagging part B is disposed and the tension of the strip 12 is maintained constant by constant tension mechanism H1, H2. The deviation position of the tension rollers of the mechanisms H1, H2 is detected and the speeds of the respective continuous feed parts C, E and the intermittent feed part D are synchronized, by which the strip 12 is partially plated.

Description

[Detailed Description of the Invention] Statement 1. FIELD OF THE INVENTION The present invention relates to an apparatus for partially plating a long strip-shaped metal material (hereinafter referred to as "strits") at regular intervals along its length. This kind of partial plating equipment can be used to continuously connect a large number of segments punched by a press in a longitudinal direction, like a lead frame used for manufacturing semiconductor devices such as ICs and LSIs. This strip can be suitably used when partially plating the required portions of each segment.

Background of the Technology When partially plating strips such as lead frames, the pre-plating process must include cleaning the surface of the strips to remove oil, oxides, impurities, etc. After completion of plating, the plating solution must be washed away from the strips and dried as post-treatment. If a series of such plating pre-treatment, plating treatment and post-treatment is carried out continuously while the IJ tag moves in its length direction, the pre-treatment process involves continuously feeding the strip f. In the plating process, it is desirable to feed the strip 7° intermittently, and in the post-processing, it is desirable to feed the strip continuously.

This is because in the case of partial plating, the parts that are not to be plated are masked and the plating is performed by applying current for a certain period of time.
This is because it is necessary to stop feeding the Stritz during that time. Further, in the pre-treatment and post-treatment, continuous feeding is preferred in order to uniformly treat the surface of the strips.

In this way, when the continuous feeding section and the intermittent feeding section coexist in the processing line, a constant tension is applied to the strip in the continuous feeding section while the strip is stopped in the intermittent feeding section. It is desirable that Further, the feed speed of the strike IJ must be the same between the continuous feed portion and the intermittent feed portion.

In addition, strips are fed out from a supply section wound around a reel, but with thin strips such as lead frames, there is a risk that the strips will be deformed if pulled with a strong force from the outside of the reel. A slack portion of the strip is provided between the plating pretreatment section and the plating pretreatment section. Therefore, it is necessary to synchronize the strip feeding speed in the strip supply section and the continuous feeding speed of the plating pretreatment section to smoothly supply the strip.

Furthermore, in the plating process at the intermittent feed section,
Since plating can only be done while the strip is stopped, in order to increase the plating production, it is desirable to have as many 7% of partial platings as possible on one strip.
Alternatively, it is desirable that the time required for one plating be as short as possible.

OBJECTS OF THE INVENTION The first object of the present invention is to (1) solve the above-mentioned problems in an apparatus for partially plating an IJ tube at regular intervals while feeding it in its longitudinal direction.

Another object of the present invention is to provide a slack portion in the strip in the process of transition from the strip supply section where the strip is fully wound on the reel to the continuous feed section of the strip plating pre-treatment process, thereby increasing the strip feeding speed of the strip supply section. The goal is to synchronize the continuous feeding speed of the plating pretreatment section to achieve smooth strip feeding.

A further object of the present invention is to synchronize the feed speeds of the continuous feed section and the intermittent feed section with each other when a continuous feed section and an intermittent feed section of the strip coexist in one processing line; In the continuous feeding section, the tension of the IJ tube must be maintained constant.

Still another object of the present invention is to
In the case of ``partial plating at intervals of 300 mm,'' the purpose is to perform the plating process efficiently in the shortest possible time and at a sieving speed.

In order to achieve these objects, the present invention provides an apparatus for partially plating a long metal strip at regular intervals along its length while the strip is fed along its length. a strip supply means for feeding out an IJ tube, which is wound on a reel in the order of the feeding direction of the strip;
A plating pretreatment means for processing the strip while continuously feeding it, and changing from continuous strip fq feeding to intermittent feeding,
There is a means for synchronizing the continuous feed 9 and the intermittent feed, a plating means for applying partial plating while the strip is stopped during the intermittent feed, and a plating means for applying plating while continuously feeding the strip again. Processing means and stock of processing staff
and a strip storage means for winding the strip, and between each continuous feeding section and the interleaving feeding section of the strip IJ,
tension of the strip by passing the strip through at least one fixed roller and at least one tension roller. A constant tension mechanism is arranged 4 to maintain a constant tension, and means is provided for synchronizing the feed speeds of the continuous feed section and the intermittent feed section by detecting the deflection position of the tension roller of the constant tension mechanism. A partial plating device is provided which is characterized by:

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In fact, in Reli, IC is a long and band-like complete material (strip).

The case of a lead frame used for manufacturing all semiconductor devices such as LSI will be explained below.

FIG. 1 is a diagram showing an outline of the process of the partial plating apparatus of the present invention. As shown in Fig. 1, A shows a strip supply unit that feeds out the entire strip 12 wound around the reel 10, B shows a slack part of the strip 12, and C shows the surface of the strip 120 as a pre-treatment for plating the strip 12t. D is the part where the strips 12 are partially plated, E is the part where all the plating solution adhering to the strips 12 is washed away and dried as a post-plating treatment, F is a slack portion similar to B, and G is a slit storage portion where the treated slits 12 are wound and stored on a reel 14V.

The strip f12 is a lead frame as shown in FIG. 2, in which a large number of segments 12a, 12b, . At the partial plating part, the strips 12 are fed 9 intermittently, and while the IJ tube 12 is stopped, the central part of each segment, that is, the semiconductor chip (not shown) is mounted. When the wire mending area 121 connected to the die-pond puffer area and the semiconductor chip with thin metal wires is removed, it is partially plated with gold or the like.

In this way, the partial plating section is an intermittent feeding section, and the pre-processing section C and the post-processing section E are continuous feeding sections. Then, the intermittent feed section and the continuous feed section C.

A constant tension sweeper H1°H2 is provided between C2E and C2E to absorb the feed of the strip 12 in the longitudinal direction and to keep the tension of the strip 12 constant at the continuous feed portion C2E.

Figure 3 shows +7 horn supply section A and strip slack section B? I--Schematically shown in perspective view. The strip supply line A consists of a reel 10 rotated by a drive motor 16P. The strip 7° 12 is unwound from the reel 10 by the rotation of the drive motor 16 and reaches the slack area 12.
4, the pretreatment section C (first
(Fig.) is continuously supplied. The slack portion BK is provided with a height detection device 18 for maintaining the height of the strips 12 within a certain range.

The height detection device 18 operates a non-contact type sensor 20 installed at a fixed position in the direction of travel of the IJ tube in the slack portion B. The distance in the vertical direction from the position to the strip 12 is measured by a well-known method, and the constant /flJ value is input to the detection circuit 22 as a peak wave analog signal as shown by Sl in FIG.

FIG. 114 shows the t-shape detection circuit 22.

The output Sl of the sensor 20 is branched and input to two peak hold circuits 24a and 24b arranged in parallel. Each peak hold circuit 24a.

24b is a switch 26a #26b; 28
＆ #28b; and 30a, 30bf: Equipped with
These switches open and close at a certain period of 2T, as shown in diagram fJ5. That is, switch 26a.

28a closes simultaneously for a short time with a period of time 2T,
Similarly, there is a time difference of time T between the switches 26b and 28b, which are simultaneously closed for a short time with a period of time 2T. Further, the switch 30a and the switch 3Ub are each the switch 26a.

28a and the switches 26b and 28b are opened for a time T and then closed for a further time T by the closing rising force of the switches 28a and 26b, 28b, and this operation is repeated, and in the end, the switches 30m and 30b are alternately opened and closed at a constant period of 2T. The switch 26a performs such opening and closing operations.

28&; By providing the switches 26b and 28b, the peak of the peak wave signal S1 is held in the peak hold circuit 24.
The signals a and 24b are held sequentially with a time difference.

The outputs of the peak hold circuits 24a and 24b, in which the peaks are held in this way, are sent to a pair of switches 30.
a and 30b, and as a result, a signal with a waveform as shown in FIG. 582 is obtained as the output of the height detection circuit 22.

The reel drive motor 16 (FIG. 3) is driven at a speed relative to the signal waveform S2 served as the output of the height detection circuit 22, or is driven by a circuit (not shown) to further add hysteresis to the waveform of the height detection circuit 22. ) is driven in a more stable state. That is, the sensor 20 is a strip 7' which is a lead frame having a large number of holes that are pressed.
12 is detected directly, the peak wave analog signal St is very unstable and has extremely large fluctuations.
The peak hold circuit 24 a p 24 b ' has a height detecting circuit 22 that changes the waveform to No. 16 S2 with a stable waveform, and uses this IB No. Szk, or a signal that further gives hysteresis to this (not shown) is used to control the drive motor 16 so that, in relation to the feed rate of the plating apparatus 100, the strip 12 sag at the slack portion B (FIG. 3) - ? Il- to maintain. Here, the constant time T is one segment of the strip 12 (!j-de frame) 12a, 12bp... (
(Fig. 2) is longer than the time taken by T
A period of time during which it is thought that a peak wave signal S1 having a peak approximately proportional to the amount of slack in the lead frame is obtained is taken. If the strip 7'12 is made of a flat fxWY-shaped material that does not have many holes or irregularities like a lead frame, the responsiveness of slack detection can be improved by setting the time T short. A similar sag (vortex) detection device can be used in the sagging portion at F and the strip storage portion at G in FIG.

The height detecting device 18 is controlled by the speed at which the strip 12 is fed to the strip supply section in the plating apparatus 100.
The strip 12 is controlled in relation to the continuous feeding speed of the pre-processing section c (gi figure), and the slack is always maintained within a certain range, so that the strip 12 is not affected by the inertia of the reel 10,
There is no risk of it being pulled with excessive force.

Next, with reference to FIGS. 6 to 12, the constant tension machine mfIx* located between the continuous feed sections C, E (FIG. 1) and the intermittent feed section D (FIG. 1) of the strip f12 is H2 will be explained. Note that since the two constant tension mechanisms H1 and H2 can both have the same structure, it will be sufficient to explain only one of them.

6 and 7 show a first implementation of the constant tension mechanism. In the figure, 31 to 33 are rollers made of resin or the like, and 34 is an arm connecting the rollers 31 and 32. The shafts of the row 232 and roller 33 are fixed to the pace, and the roller 31 is rotatably attached to an arm 34, which can swing around the center of the roller 32. The center of the arm 34 on the roller 32 side is directly connected to a pneumatic swing cylinder 35 , and a constant pressure is supplied to the pneumatic swing cylinder 35 via a pressure control valve 36 .

Therefore, according to such a constant tension mechanism, one foot torque is generated in the arm 34, and the roller 3 connected to this
1, tension is applied to the strip 12 extending via rollers 32, 31, 331. The tension applied to this strip changes depending on the swing angle θ of the arm 34, but by selecting the diameter of the row 231, the length of the arm 34, and the distance between the rollers 32 and 33, θ is limited to a certain range. Depending on the situation, it can be confirmed by calculation that the tension is approximately constant. Diameter of row 231 f 267 am, arm 34
When the length of is 300n+n+1, the distance between the rollers 32 and 33 is 600mm, and a torque of 0.75 to 9m is applied to the arm 34, the tension is 1.40kg when θ is 0°, and 1.4kg when θ is 20°. 32kl; 1.36kg when I and θ are 40°
, when θ is 60', it is 1.43 yut.

Figures 8 and 9 show the Kijimi mPl of the constant tension mechanism. In the figure, rollers 31 and 31' are connected to arm 34'.
A pneumatic swing cylinder 35 is directly connected to the central axis of the arm 34'. Therefore, the rollers 31 and 31' swing around the intermediate point of the arm, and the rollers 32,
31, 31', 33'ff: via) IJ
This applies tension to the tag 12.

The second implementation row is advantageous when the intermittent feed stroke is longer than the first implementation row.

FIG. 10 shows a cross-sectional view of a pneumatic 4 mEIih cylinder 35 that can be used in the first and second embodiments of the lintel tension mechanism. In the figure, 41 is a rotating shaft, 42 is a pinion,
43 is a rack, 44 and 44' are pistons, and 45 is a motherboard. If pressure is applied from the nitrogen inlet 47, the pressure inside the cylinder 49 will rise and the piston 4 will
Press 4'. Rack 4 connected to this piston 44'
3 moves to the left, and by the gear 42 that meshes with it,
A shaft 41 connected to the arm 34.degree. 34' (FIGS. 6-9) rotates. In place of such a rack and pinion type pneumatic swing cylinder, a pneumatic sweeping mechanism such as a Peintig which rotates a shaft integrated with a vane that slides on the inner surface of the wheel may be used.

Figures 11 and 12 show the third real h(rt) of the constant tension mechanism.
It is nJ. In the figure, the tension row 251 is shown by a slider 5 movable on a guide 1I41I53.
4 is fixed on top. The slider 54 has a pressure flil
It is constantly pushed to the right in the figure by a pneumatic cylinder 55 that is supplied with constant pressure by a J Thl valve 36.

Therefore, a constant tension is applied to the strips 12 extending via the tension roller 511i and the fixed roller 52 via the tension roller 51'7. This third IJ requires space, but compared to the first and second implementation rows, it is characterized by having less tension error because it does not require rocking motion.

・As explained above, constant tension Sa using air pressure
If h't I (lp Hz f is used, even if the strips 12 are stopped in the intermittent feed section D (see g1), such as a partially plated section, the continuous feed section C1E (see fig. 1)
) The IJ rod 12 can be fed continuously, and a nearly constant tension can be obtained in the strips 12. Further, since the constant tension mechanism H1yH2 uses pneumatic pressure, its inertial mass can be reduced, and therefore high speed operation is possible, and the tension can be easily changed from the outside using the pressure regulating valve 36.

Next, referring to FIG. 13, a device for synchronizing the stripping speed between the continuous feed section C and the intermittent feed section will be explained using the constant tension of FIGS. 6 and 7. In the feeding section C, the strip 12u is continuously driven by a motor 52 and a roller 54. On the other hand,
In the intermittent feed section, the strips 12 are moved intermittently with a constant stroke by a catch mechanism 58 that is reciprocated by a pneumatic cylinder 56. Between the rollers 32 and 33, the strip 12 is a tension roller 31, which absorbs the speed difference between the continuous feed sc and the intermittent feed section. The tension roller 31 is rotatably attached to an arm 34 biased in one direction by the constant tension mechanism described above, and a rotary encoder 68 is provided at a bearing portion at the center of rotation of this arm 34. . Therefore, the arm 34 and the tension row 731 absorb the speed difference while repeating the rocking motion. and,
The rotary encoder 68 detects the deflection angle of the arm 34, sends the signal to the speed control device 70, and the motor speed control circuit 72 feedback-controls the driving speed of the motor 52.

The strip speed of the continuous feed section driven by the motor 52 is υ (m/5ee), and the intermittent feed time interval is t (s
ee), intermittent feed distance? ! -t), the synchronization condition for the continuous feed rate is as follows.

Now, the center position of the tension roller's deflection is determined mechanically, and the maximum deflection angle of the clockwise rotation is θl,
If the maximum deflection angle of counterclockwise rotation is θ2, the relationship with the speed is as follows.

If θl〉θ2, υ〉− θ■=02 v−−θ1〈θ2 v− Therefore, θl and θ2 are measured by the rotor 0 encoder 68, and the difference is calculated for the intermittent feed speed. ,
Determine what state the continuous feed rate is in.

The continuous feed speed is controlled so that the center position of the deflection of the tension roller 31 or the arm 34 comes to a predetermined position, and the synchronized state is returned. Alternatively, the end point a of the deflection of the tension roller 31 is detected, and the position of a is determined to be a predetermined position a.
It is also possible to synchronize the continuous feed rate with the intermittent feed rate by decreasing the continuous feed rate when it is located on the outside, and increasing the continuous feed rate when it is located on the inside. (The end point of the runout can also be detected and synchronized as well.) By using such a synchronizer, the speeds between the continuous feed section C and the intermittent feed section are automatically synchronized. Ru. In addition,
The same type of apparatus can be similarly applied between the partial plating section and the post-processing section E in FIG. It goes without saying that this synchronizer can also be applied to the constant tension mechanism explained in FIGS. 8 and 9. In the case of the constant tension mechanism explained in FIG.
Instead of detecting the deflection angle of the tension roller arm in the figure with a rotary encoder, the tension roller 5
Synchronization can be achieved by detecting the displacement position of 1 with a linear encoder (not shown) and controlling the continuous feed rate so that the displacement position is at a predetermined position ηa.

Next V, partial plating part D which is the intermittent feed part (Fig. 1)
The operation will be explained with reference to FIGS. 14 to 17. In this figure, 12 is a strip, 80.80
' is the plating head, 82°82' is its mounting base, 84
, 84' is an adjustment screw, 86 is...! Ilot pin, 88
90 is a stroke adjustment screw.

2 in FIG. 14, plating heads 80 of the same length,
80' are longitudinally arranged in tandem, and each plating head 80.80' is capable of partially plating a predetermined number of segments of strips 120 (for convenience of explanation, four segments are shown) in one cycle. Also, the strip 7'12 is fed with the same four-segment stroke. The strip f12 is fixed to the main body of the apparatus by a pilot bin 86, and is attached to the plating head 8.
U and 8 U' are adjusted to predetermined positions to be plated by adjusting screws 84 and 84'. Each segment of strip 12 is plated twice by these plating heads 80, 80'. In FIG. 15, the part indicated by a is the part plated by the plating head 80.8, and the part indicated by ab is the part plated by the plating head 80.8.
This is the part plated twice with 0'. Therefore, according to this implementation sequence, the time required for pure plating in one cycle is reduced because the two plating heads 80 and 80' perform plating twice in order to plate to a thickness of Hr feet. This shortens the length and allows for high-speed plating.

Also in FIG. 16, the plating head 80 has the same length.
. Responsible for However, between these plating heads 80 and 80',
The eight segments are spaced apart, and the strip 12 is fed in twice the stroke as in FIG. 14, or eight segments. Therefore, the strips 12 are alternately plated in four segments using these plating jigs 80 and 80'. 17th
In the figure, a indicates a portion plated by the plating head 8o, and b indicates a portion plated by the plating head 80'.

The latter implementation column shown in FIGS. 16 and 17 is
This embodiment has the following advantages over the former embodiment shown in FIGS. In other words, (1) Even if the time required for plating in one cycle is longer than in the former case, the length of sending strips in each cycle is twice that in the former case, so the overall time spent on plating is shorter than in the former case. be shortened. (
2) In the former case, the second plating is layered on top of the first plating, so it is difficult to plate in the exact same position, and even a slight deviation occurs, resulting in low positional accuracy; however, in the latter case, The positional accuracy of the plating is good because it only needs to be plated twice.

If the plating head is lengthened in order to increase the plating speed, the positional accuracy of the plating will decrease as the plating head expands and contracts due to thermal expansion, so there are restrictions on the length of the plating head. Therefore, the plating speed can be increased by using two or more plating heads as described above.

Generally, by using n plating heads, it is possible to achieve about 1 times the speed.

[Brief explanation of drawings]

Fig. 1 is a diagram showing an outline of the process of the partial plating apparatus of the present invention, Fig. 2 is a plan view of a long strip-shaped metal strip configured as a lead frame, and Fig. 3 is a diagram showing the strip supply section and the slack section. FIG. 4 is a perspective view, FIG. 4 is a diagram showing the signal waveform of the height detection circuit in FIG. 4, and FIG. 6 is a plane view of the first implementation row of the constant tension mechanism. figure,
7 is a side view of the same, FIG. 8 is a plan view of the second embodiment of the constant tension mechanism, FIG. 9 is a side view of the same, FIG. 10 is a sectional view of the cylinder for swinging the arm 7, and FIG. The figure shows a plan view of the third implementation [+l] of the constant tension machine t4, FIG. The first part of the plating jig arrangement
Figure 15 is a schematic diagram of the strip plated by the same row 7iii, Figure 16 is a schematic diagram of the second array of the plating jig arrangement, and Figure 17 is the same diagram. FIG. 2 is a schematic diagram of a strip plated in rows; A...Strip supply section, B...Sag detection section, C
... Pre-treatment continuous feeding section, D... Partial plating section, E.
... Post-processing continuous feeding section, F... Slack section, G... Strip storage section, ■(l v f (2... Constant tension mechanism, 10... Reel, 12... Strip, 20...
・Height detection sensor, 22... Height detection circuit, 31...
・0J moving roller, 32, 33...fixed roller, 34・
··arm. Figure 4 Figure 5 S2-111111111 +---1 Drunken Eye Figure 10 Figure 12 Procedural amendment (voluntary) June 15, 1980 Commissioner of the Japan Patent Office Waka Kazuo Sugi 1, Indication of the case 1982 Patent Application No. 045616 2, Name of the invention: Long metal strip, 7° partial plating device 3, Person making the amendment Relationship with the case Patent applicant name: Shinko Electric Industry Co., Ltd. Co., Ltd. 4, agent address: 8-10-5, Toranomon-chome, Minato-ku, Tokyo 105
Target of amendment (1) “Claims” column in the specification (2) “Detailed description of the invention” column in the specification (3) “Brief description of drawings” column in the specification (4) Drawing (Figure 3) 6. Contents of amendment (1) The scope of the claims will be amended as a separate sheet. (2) Detailed Description of the Invention Column A) Page 7 of the Specification, Lines 4-5 [S in the intermittent feed section] While the IJ is stopped,
Preferably, the strip is under constant tension in the continuous feeding section. Also, delete ". (Example) In line 8 of the same page, amend "It is necessary." to "It is necessary, and it is desirable that a certain tension is applied to the strip."ノ → Page 8, lines 11 to 14 [From the strip supply section... to the plating pretreatment section] is corrected as follows. ``The gap between the strip supply section and/or the strip storage section and the continuous feeding section of the strip plating pre-treatment process and/or the metal Φ post-treatment process). ``The feeding speed or winding speed of the strip in the storage section and the pre-plating treatment section or the post-plating treatment section''-> Delete ``in the continuous feeding section'' from page 8, line 20 to page 9, line 1. E) On page 9, lines 14 to 17, "The strip is moved from continuous feeding to...during intermittent feeding" is corrected to "The stop is changed to intermittent feeding 9 and during intermittent feeding." do. f) In the first line of page 10, between "comprising" and "the strip," insert "comprising means for mutually converting between continuous feeding and intermittent feeding of the strip." g) On page 13, line 3, "detection circuit 22" is corrected to "an example of detection circuit 22". h) Page 21, line 15, if [θ, > θ2, then v>rJ is corrected to ``θ, <θ2, then v) 7J.'' Page 21, line 17, ``If θ, > θ2, then v<7J is corrected. (3) "Detection circuit" on page 26, line 16 of the specification is corrected to "detection circuit example." (4) As shown in red ink on the attached drawing, the code r124J and its leader line are added to Figure 3 of the drawing. 7. List of attached documents Amended claims 1 copy Amended drawings (No. 31'l) 1 copy 2. Claims 1. An apparatus for partially plating a long metal strip 76 at regular intervals in the longitudinal direction while the strip is being fed in the longitudinal direction, and in the order of the feeding direction of the strip,
a strip supply means for reeling out a strip wound on a reel; a plating pretreatment means for processing the strip while continuously feeding it; and a plating pretreatment means for feeding the strip intermittently and stopping during the intermittent feeding; A plating means for partially plating the strip, a post-plating treatment means for processing the strip while continuously feeding it again, a strip storage means for winding the treated strip around a reel, and a plating means for partially plating the strip. A constant tension mechanism that maintains the tension of the υ strip at a constant level by passing the strip through at least one fixed roller and at least one tension roller is disposed between the feeding section and the constant tension mechanism. A partial plating apparatus characterized by comprising means for detecting the deflection position of the tension roller and for synchronizing the feed speed of each continuous feed section and the intermittent feed section. 2. Both or one of the strip supply means and the storage means includes a drive motor that rotates a reel wound with the strip, and the drive motor is connected to the strip supply and/or storage means and the plating pretreatment means and/or 2. The apparatus according to claim 1, wherein the rotation is controlled so that the slack of the strip, f, formed between the plating post-processing means and the plating post-processing means is within a certain range. 3. The means for controlling the slack of the strip to be within a certain height range includes a detecting means for detecting the slack of the strip, and the detecting means is arranged at a certain position in the direction of movement of the IJ. a non-contact type detector that detects the height of the strike IJ, 7' at , and a non-contact detector that receives a peak wave signal from the detector and holds the peak of the peak wave signal with a time difference J @ order 2 3. The apparatus according to claim 2, comprising: one peak hold circuit and a pair of switches for selectively switching outputs of the two peak hold circuits. 4. The constant tension mechanism includes two fixed rollers arranged at a predetermined interval, an arm swingably provided around the axis of at least one of the two fixed rollers, and a free end of the arm. and a rotatably mounted tension roller for engaging the strip from one fixed roller through the tension roller to the other fixed roller, and moving said arm at a constant angle about its central axis in a direction to tension the strip. 2. An apparatus according to claim 1, further comprising means for biasing rotation by force. 5. The constant tension mechanism includes two fixed rollers arranged at a predetermined interval, an arm provided swingably around an arbitrary fixed central axis between the two fixed rollers, and a mechanism related to the fixed central axis. tension rollers rotatably provided at both ends of the arm, the strip is engaged from one fixed roller to the other fixed roller via these two tension rollers, and tension is applied to the strip. Claim 1 comprising nine stages for rotationally biasing the arm in a direction in which the arm is rotated with a constant force about its central axis.
Apparatus described in section. 6. The device according to claim 4 or 5, wherein the arm is rotationally biased by a pneumatic swinging mechanism with a constant force in a direction that applies tension to the strip. 7. The constant tension mechanism includes at least one fixed roller and at least one tension roller capable of swinging movement on a straight line, passes the strip through the fixed roller and the tension roller, and applies tension to the strip. 2. The apparatus according to claim 1, further comprising means for biasing said arm with a constant force in a direction on said straight line that provides a constant force. 8. The synchronizing means comprises means for feedback controlling the strip feeding speed in the continuous feeding station so that the position of the oscillating tension roller of the constant tension mechanism is within a predetermined range. The device according to scope 1. 9. The strip has segments continuously connected in the longitudinal direction, and the plating means for partially plating the strip includes at least n plating heads of the same length arranged in a column in the longitudinal direction of the strip. each plating head performs partial plating on a plurality of the segments at the same time in one cycle, and where t is the distance of the strip corresponding to the plurality of segments that each plating head simultaneously plating, Claim 1, wherein the strip is fed by a length nL in one cycle and each plating head is spaced apart from each other by a distance nl between their adjacent ends. device ◎ 72 characters

Claims (1)

[Claims] (1) An apparatus for partially plating a long metal strip at intervals in the lengthwise direction while the strip is being fed in the lengthwise direction, the device comprising: In order, there is a strip supply means for feeding out the strip wound on a reel, a plating pretreatment means for treating the strip while continuously feeding it, and a plating pretreatment means for converting the strip from continuous feeding to intermittent feeding, and converting the strip from continuous feeding to intermittent feeding. plating means for partially plating the strips while the IJ is stopped during interfeeding; and means for storing the strips; Between each 9 parts of continuous feed and 9 parts of intermittent feed, the strips are connected to at least one fixed loan and at least one ten 7 part.
A constant tension mechanism is installed that maintains the tension of the strips at a constant level by turning the tension roller red and white, and by detecting the deflection position of the tension roller of the constant tension mechanism, the feed speeds of each continuous feed section and intermittent feed section are synchronized. 2. The apparatus according to claim 1, wherein the rotation of the strip formed between the strip processing means and the processing means is controlled so that the slack is within a certain range. 3. The means for controlling the slack of the strip to be within a certain height range includes a detecting means for detecting the slack of the strip, and the detecting means detects the slack of the strip at a certain position in the traveling direction of the strip. a non-contact type detector that detects the entire height of the peak wave signal, two peak hold circuits that receive the peak wave signal from the detector and sequentially hold the peaks of the peak wave signal with a time difference, and the two peaks. 3. The device according to claim 2, comprising a pair of switches for selectively switching back the output of the hold circuit. 4. The constant tension mechanism includes two fixed rollers arranged at a predetermined interval, an arm swingably provided around the axis of at least one of the two fixed rollers, and a rotatable arm attached to the free end of the I-arm. Tension roller and t attached to the tool
and retains the strip from one fixed roller through the tension roller to the other fixed roller, and includes means for urging the arm to rotate with a constant force about its central axis in a direction that applies tension to the strip. An apparatus according to claim 1, comprising: 5. The constant tension mechanism consists of two fixed rollers arranged at a predetermined interval, an arm provided with zero swinging around an arbitrary fixed central axis between the two fixed rollers, and the fixed central axis. tension rollers rotatably provided at both ends of the arm, respectively, and the strip is moved from one fixed roller to these two tension rollers f.
Claims further comprising means for engaging the other fixed roller through the arm arm and urging the arm shaft to rotate with a constant force about its central axis in a direction that applies tension to the arm arm. The device according to paragraph 1. 6. The device according to claim 4 or 5, wherein the arm is rotated by a pneumatic rocker (14) with a constant force in the direction of applying tension to the strips. 7. Constant tension The mechanism includes at least one fixed roller;
at least one tension roller capable of swinging on a straight line, the strip passes through the fixed roller and the tension roller, and the arm is moved in the direction of the straight line to apply tension to the strip. 8. The device according to claim 1, which includes means for biasing with a constant force (1f); 9. The apparatus according to claim 1, further comprising means for controlling the total feed rate t[+lJ of the soot lip at the continuous feed station so that the feed rate t[+lJ and the plating means for partially plating the strip comprises at least n plating heads of the same length arranged in tandem in the longitudinal direction of the strip, each plating head simultaneously plating in one cycle. Partial plating of a plurality of segments is fully applied, and each plating head simultaneously plating the segments corresponding to the plurality of segments; 2. The apparatus of claim 1, wherein the plating heads are spaced apart from each other by a distance of nt between their adjacent ends.