TW479046B - Long size lead frame carrying mechanism in plating device - Google Patents

Abstract

To carry a long size lead frame at high positioning precision without sliding during carrying even if it is a depressed type, a multi-design/a fine pattern design or a thin type. This carrying mechanism of a long size lead frame is provided to at least a rear position of a plating treatment bath and consists of a driving upper roller 2, a press roller 3 provided in contact with a side part thereof and a lower roller 4 provided below. The upper roller 2 is for rotary driving for rolling up and pulling a surface of a lead fame 1 and is constituted of a pair of discoidal large diameter rollers 6, 6 provided to be opposed mutually on a main shaft 5. The press roller 3 consists of a pair of small diameter rollers 10, 10 corresponding to the pair of large diameter rollers 6, 6 and is provided with a pressurizing means to press the lead frame 1 to the side of the large diameter rollers 6, 6. The lower roller 4 is provided to a lower position wherein the lead frame 1 passing through the upper roller 2 moves almost drooping.

Description

479046 A7 B7 V. Description of the invention (1) (Please read the note on the back first '^: fill in this page) This invention is about the long lead frame transport mechanism of the electroplating device, especially about the winding of coH to coil The coil-shaped long lead frame can be dismantled, so that the lead frame can be moved in a continuous or intermittent manner to each processing tank for electroplating, which can promote the lead frame to move. According to the press, there have been several types of long lead frame transport mechanisms for electroplating devices. The big difference is the use of rollers and conveyor belts. 1) For those who use rollers, the lead frame is moved between two rotating rollers, and two cylindrical rollers are used (please refer to the official publication No. 5 5 — 1 1 1 2). The first picture of the newspaper, Japanese Patent Application Laid-Open No. 8 — 2 3 6 6 7 4), it is also used for the following concave lead frame, and it is used to avoid contact with the concave portion of the central part of the lead frame in the width direction. Rollers with circular grooves of a slightly larger size (see, for example, Japanese Patent Application Laid-Open No. 5 9 — 5505 5). 2) Those who use conveyor belts generally use flat belts, except for the following concave lead frames. They also use conveyor belts that have holes in the surface in the transport direction to avoid contact with the concave portions. Transport between the passing and restraining rollers (refer to, for example, Kokai Hei 6-3 2 9 2 9 4). Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, among the above-mentioned rollers, the cylindrical roller is not suitable for the transportation of the concave lead frame. Then there is a problem of deformation when being squeezed between the rotating rollers. When a cylindrical roller is used, at least one of the rollers is a driving roller, and the two rollers are arranged in an opposite direction by applying the Chinese standard (CNS) A4 (210 X 297 mm) -4- 479046 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (2) The contact between the wheel and the lead frame is only a line contact, and the contact area is small. Therefore, the power of transporting lead frames by rollers is not so great, especially when transporting lead frames with a thickness of less than 0.1 mm, sometimes slippage occurs, which causes problems in positioning accuracy during intermittent transportation. Among those who use conveyor belts, flat belts are not suitable for transporting concave lead frames, and if the lead frame has become more porous, finely patterned, and thinner recently, it will pass between the flat belt and the suppression roller. Deformation problems sometimes occur. When a conveyor belt having a recess in the conveying direction is also used, the lead frame moving on the conveyor belt and the restraint roller are only in line contact. Therefore, its conveying force is not very large, especially if the lead frame is thin, sometimes it will slip, so that it will cause problems in positioning accuracy when it is transported intermittently. The problem is that the present invention solves the problem of the long lead frame transport mechanism of the conventional electroplating device described above. That is, the present invention is characterized by providing a transport of a recessed lead frame, although the structure is simple, Even the latest multi-needle, micro-patterned, and thinned leadframes can be transported with a strong transportation force without slipping during transportation, and are long types of electrical and mining equipment with high positioning accuracy. Lead frame transport mechanism. In order to solve the problems of the above-mentioned conventional technology: A The first-long lead frame transport mechanism of the present invention regarding the electroplating device is the electroplating device of the long lead frame 1, which is provided at least behind the electroplating treatment tank, which has Set in the same position or above the conveyor belt (please read the precautions on the back ^ fill in this page) Suspected-installed --- ordered --------- -T-This paper size applies to China Standard (CNS) A4 specification (210 X 297 mm) -5- 479046 A7 --- B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (3) The upper roller 2 'for driving The suppression roller 3 ′ on its side and the lower roller 4 provided on the lower side, and the above-mentioned driving upper roller 2 is used to pull and rotate the surface of the lead frame 1, and is provided on the main shaft 5 by the opposite direction. A pair of disc-shaped large-diameter rollers 6, 6 is constituted. The pair of large-diameter rollers 6 and 6 are provided with opposite edge portions 7 and 7 having the same width portions 8 and 8 as those of the lead frame 1. Each of the large-diameter rollers 6 and 6 is provided with a peripheral edge portion for guiding the guide diameter near the outer peripheral surface. The shape of 9, 9. Is close to the inner edge of the outer peripheral surface of each side of the outer guide. The suppression roller 3 is formed by a pair of large and small diameter rollers 10, 10, and has Pressing means for pushing the lead frame 1 of the diameter rollers 6, 6 toward the large diameter rollers 6, 6 and the lower roller 4 is provided in a state where the lead frame 1 passing through the driving upper roller 2 moves slightly downward. Down position. B The long lead frame conveying mechanism of the electroplating device of the present invention is the electroplating device of the long lead frame 1 which is arranged at least behind the electroplating treatment tank and at the same position as or higher than the conveyor belt The driving upper roller 2 ′ and the suppression roller 3 provided on the side thereof in contact with the driving upper roller 2 ′ and the lower roller 4 provided below, wherein the driving upper roller 2 is a surface of the lead frame 1 and is added to the pull rotation drive. It consists of a pair of disc-shaped large-diameter rollers 6 and 6 arranged on the main shaft 5. The pair of large-diameter rollers are arranged opposite to the inner peripheral mask. The paper dimensions are in accordance with Chinese national standards (CNS ) A4 size (210 X 297 cm) Please read the notes on the back first

装 IIIII 定 # -6- 479046 A7 B7 V. Description of the invention (4) The outer peripheral parts 8 '8' for transportation, which are approximately the same width as the side edges 7 and 7 of the lead frame 1, are each close to the outer peripheral surface. The shape of the large-diameter guide peripheral edge portions 9 and 9 for guiding the side edges is the same as above, and the pair of large-diameter rollers 6 and 6 have a guide member that can adjust the interval w corresponding to the width of the lead frame 1 and can slide on the main shaft 5. 15. The wave suppressing wheel 3 is formed by a pair of small-diameter rollers 10, 10 corresponding to one of the pair of large-diameter rollers 6 and 6, and the lead frame 1 is pushed toward the large-diameter rollers 6, 6 The pressing means is provided, and the lower roller 4 is provided at a position lower than the lead frame 1 which passes through the driving upper roller 2 and moves downward in a slightly downward shape. Hereinafter, embodiments of the present invention will be described. In the above configuration, the so-called long lead frame 1 is a long object that is rolled into a coil shape, and is unwound to be continuous or intermittently moved to each processing tank, and after being processed, it is rolled into a coil shape. ccnl to ccnl Plating. Although this conveying mechanism is installed at least behind the electroplating device (not shown), it can also be installed behind other processing tanks, as long as it can pull the lead frame 1 so that it can sequentially move to each processing tank. Necessary space. Usually, the lead frames 1 are moved in a plurality of rows, so a plurality of queues are provided. This conveying mechanism is composed of a driving upper roller 2 provided at the same position as the conveyor belt or an upper position thereof, a suppressing roller 3 provided in contact with the peripheral side surface thereof, and a lower roller 4 provided below. That is, the above-mentioned driving upper roller 2 is set at the same level as or higher than the transportation level of the lead frame 1. The lead frame 1 is rolled and drawn. The paper size is in accordance with the Chinese National Standard (CNS) A4 specification (210 x 297 mm) (Please read the notes on the back to complete this page)

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Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 479046 Α7 Β7 V. Description of the invention (5) Introduce users of rotary drive. The driving upper roller 2 is constituted by a pair of disk-shaped driving large-diameter rollers 6 and 6 mounted on the spindle 5 so as to oppose each other. A pair of large-diameter rollers 6, 6 are provided on the main shaft 5 ′ with the pair of large-diameter rollers 6, 6 facing each other by the above-mentioned driving upper roller 2, and the rotation is allowed to be performed at a desired speed. If the driving device 11 is a servo motor or a stepping motor, the large-diameter rollers 6 and 6 can also be rotated intermittently. The pair of large-diameter rollers 6 and 6 are disk-shaped, and are arranged close to the inner peripheral surface and have outer peripheral portions 8 and 8 for conveyance having a width substantially the same as that of the respective side edge portions 7 and 7 of the lead frame 1. The outer peripheral surface near the outer side has a stepped disc shape in which the large-diameter guiding peripheral portions 9 and 9 can guide the side edges of the lead frame 1. The pair of large-diameter rollers 6 and 6 can adjust the interval w corresponding to the width and width of the lead frame 1, and are set to be slidable in the axial direction on the main shaft 5 by, for example, rack fitting or sliding keys. The material of the large-diameter rollers 6 and 6 is preferably a relatively large friction coefficient. For example, a silicone rubber may be attached to the outer peripheral surface. The means for sliding on the main shaft 5 is provided with a guide shaft 1 5 which can be rotated by another driving device 12, and a male screw portion 1 4 ′ 1 4 ′ opposite to each other is formed near the two sides and is provided there. Double-stranded guide members 15 and 15 with female screw portions 16 and 16 respectively screwed together, and the guide members 15 and 15 may be engaged with the outer peripheral portions of the rollers 6 and 6 (refer to the figure) 3). The above-mentioned suppression roller 3 is driven by one of the upper rollers 2 for driving. The paper size is in accordance with China National Standard (CNS) A4 (210 X 297 mm).

Please read the note on the back first, and then zero again. Fill in the page I

I canceled the order and caused the above-mentioned pair of large-diameter rollers to be printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. -8-479046 A7 B7 V. Description of the invention One of the pushes is made of a pair of disc-shaped small-diameter rollers 10 and 10, and a gas cylinder or a spring (not shown in the figure) is used to push by means of pushing. The setting position of the small-diameter rollers 10 and 10 is preferably a side position that is lowered by about 90 degrees from the top of the pair of large-diameter rollers 6 and 6. The lower roller 4 is located at a position where the lead frame of the driving upper roller 2 passes through the lead frame of the driving upper roller 2 and moves slightly downward. The lower roller 4 is a smooth roller that receives a flat belt. The portion may be cylindrical. When the lead frame 1 is to be transported by the long lead frame conveying mechanism of the above electroplating device, one pair of large-diameter rollers 6, 6 for the upper roller 2 for driving needs to be spaced by w, corresponding to the wide width of the lead frame 1 to be transported first. Adjust the width. That is, the interval w is adjusted into a pair of large-diameter rollers 6 and 6 near the inner peripheral portions 8 and 8 for conveyance, which can bear the side edge portions 7 and 7 of the lead frame 1 and near the outer peripheral edge portions 9 for guide. 9 can guide each side edge of the lead frame 1. The adjustment is to rotate the guide shaft 13 with an additional driving device 12 to screw the female screw portions 1 6 and 16 of the male screw portions 14 and 14 to the guide members 15 and 15. Approach or deviate from the guide shaft 13. Since the double-stranded portions of the guide members 15 and 15 are respectively engaged with the large-diameter rollers 6'6 outer peripheral portions', the large-diameter rollers 6 and 6 can be moved to the main shaft 5 to adjust the interval w. And in this state, for example, the lead frame i after the electroplating treatment tank is made so that its surface facing j can contact one of the upper rollers 2 for driving. The pair of large-diameter rollers 6 This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm)

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Order IIIII Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs -9- Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 479046 A7 -____ B7___ V. Description of the Invention (7) '6 The top surface is affixed on the outer surface, recapture and restrain One of the rollers 3 has a gap formed by the small-diameter rollers 10, 10, and is then rolled and pasted on the lower roller 4 so as to be able to move to the next processing. After that, the driving device 1 1 is started, the main shaft 5 is rotated and the driving upper roller 2 is rotated, and the lead frame ′ attached to a pair of large-diameter rollers 6, 6 is also rotated, so that it can be pulled to move. In the above case, since the upper roller 2 for driving is provided at the same position or higher than the conveyor belt, and the lower roller 4 is provided at the rear and lower sides, the lead frame 1 is rolled on a pair of large-diameter rollers 6, The outer peripheral portions 8 and 8 of 6 are pushed to the large-diameter rollers 6 and 6 by suppressing the pressing force of the roller 3, and are vertically rolled down and pasted to the lower roller 4 to move to the next processing. As a result, the lead frame 1 is rolled around the pair of large-diameter rollers 6 and 6 for conveying the outer peripheral portions 8 and 8 at an angle α of at least about 90 degrees. The contact areas of the conveying outer peripheral portions 8 and 8 are quite large, so that the lead frame 1 having a thin thickness does not cause slippage, and can be moved with sufficient tension. In addition, even if the driving device 11 of the above-mentioned main shaft 5 is a servo motor or a stepping motor, intermittent rotation will not occur between the lead frame 1 and the outer peripheral portions 8 and 8 for large-diameter rollers 6 and 6. Slip, so it can also be stopped with high positioning accuracy. Moreover, the edge portions 7 ′ 7 on both sides of the lead frame 1 are supported by the large-diameter rollers 6, 6 and the outer peripheral portions 8, 8 of the conveyance, so that they are of course suitable for the recessed lead frame 1 and the surface of the lead frame 1 faces When it is moved below, it will not cause local electroplating injuries on the surface of each lead pin, and it will not cause the thin needle due to multi-needle. The paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -nn I ϋ n 1 nn • ϋ I nn I ) Deformation, etc., while receiving tensile movement. In addition, the pair of large-diameter rollers 6 and 6 for the above-mentioned driving of the transport mechanism (please read the precautions on the back before filling this page) is set to correspond to the width of the banner of the lead frame 1 and the interval w can be adjusted. All lead frames 1 can be used. [Embodiment] Fig. 1 to Fig. 3 show an embodiment of the long lead frame transport mechanism of the electroplating device according to the present invention. Although the second example of the present invention is described in which the lead frame is transported in a row, only two If it is more than one row, it can be installed in parallel. The local electroplating device of the long lead frame here is to unwind the long lead frame 1 rolled into a coil, and pass it through a pre-processing tank, a plating processing tank, a post-processing tank, and the like, and then perform plating treatment. Coiled into a coil shape. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. This shipping mechanism is shown behind the plating tank (not shown), but it can also be set in the aforementioned processing tank or post-processing tank After the position. The conveying mechanism includes a driving upper roller 2 provided at the same position as the conveyor belt or above, a suppressing roller 3 provided at a side thereof, and a pressing lower roller 4 provided at a lower rear portion. As the main part. The driving upper roller 2 is used for pulling and rotating the lead frame 1 and is driven by a pair of large-diameter rollers 6 and 6 provided on the driving spindle 5 so as to face each other. Here, the so-called large diameter is set at about 450 mm. That is, the pair of large-diameter rollers 6, 6 are in the shape of a circular plate, and the paper size is set to apply the Chinese National Standard (CNS) A4 specification ( (210 X 297 mm) -11-Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 479046 A7 B7 V. Description of the invention (9) The outer peripheral surface facing the inner side is formed to correspond to each side edge portion 7 of the lead frame 1 The outer peripheral portions 8, 8 of the same width are formed, and each outer peripheral portion near the outer side is formed into a shape of a large-diameter guiding peripheral portion 9 ′ 9 that guides each side end edge of the leader 1. The materials of each of the wave wheels 6 and 6 are those having a high friction coefficient. Here, the outer peripheral surface is made of silicone rubber. When the above-mentioned pair of large-diameter rollers 6 and 6 are set on the main shaft 5, here, the racks are used to cooperate to rotate the main shaft 5 to promote the large-diameter rollers 6 and 6 to rotate in the same direction and at the same time. 6, 6 is set to be slidable on the main shaft 5 and can be adjusted between the two as needed. In order to slide the pair of large-diameter rollers 6 and 6 on the main shaft 5, four branches can be horizontally arranged horizontally above and below the main shaft 5 as a center. Guide shafts 1 3 and approach each of the guide shafts 13 Both ends are engraved with male screw portions 14 and 14 opposite to each other, and a double-stranded guide member with female screw portions 1 6 and 16 that can be screwed to the male screw portions 14 and 14 is attached. 1 5 and 1 5 are engaged with the outer peripheral portions of the large-diameter rollers 6 and 6. The four guide shafts 1 3 and 1 3 are all connected by a toothed belt 18 and are set to be capable of rotating simultaneously by a driving device 12. The above-mentioned suppression roller 3 allows the lead frame 1 to more reliably abut against the outer peripheral side surface of the driving upper roller 2. Here, for the large-diameter rollers 6 and 6, a pair of small-diameter rollers 10 and 10 are respectively disposed on the large-diameter rollers 6 and 6 at the sides below 90 degrees from the top as a cylinder for pressurizing means (Figure (The illustration is omitted.) The lead frame 1 is pushed to the large-diameter rollers 6 and 6 for transmitting the outer peripheral portions 8 and 8. However, it is not limited to this and a spring may be used. The trail here is about 90 mm. This paper size applies to China National Standard (CNS) A4 (210 X 297 mm)

479046 A7 __ B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. Description of the invention (ίο) The above lower roller 4 is provided behind the upper roller 2 for driving. The lead frame 1 passes through the upper roller 2 for driving. The position of the movement in a slightly sagging position ', and the contact range of the lead frame 1 and the driving upper roller 2 has a large contact area at an angle of about 90 degrees. The lead frame 1 with a thickness of 1 to 0.25 mm, which is typical for the lead frame 1 by the above-mentioned long lead frame transport mechanism of the electroplating device, needless to say, the thickness of the lead frame i, which is difficult to know about the pattern, can also be reduced to 0.07. It moves to each processing tank without slipping. As can be understood from the above, the long-side lead frame transport mechanism of the electroplating device according to the present invention can achieve the same effect. a) Because the upper roller for driving is set at the same position or higher than the conveyor belt, and the suppression roller is installed on the side, and the lower roller is installed on the lower back, the lead frame is rolled and applied to the driving roller. After the outer peripheral surface of the top roller, it descends vertically and is rolled and pasted on the outer peripheral surface of the bottom of the lower roller, and then moves to the next. Therefore, the above-mentioned lead frame is rolled at least at an angle of about 90 degrees to the outer peripheral portion of the large-diameter roller for conveyance. Because the contact area with the large-diameter roller is large, the lead frame will not be thin even though it is thinner. The sliding can fully accept the rotating force of the large-diameter roller, and thereby the lead frame can be moved to each processing tank by a large pulling force. b) In addition, if the drive device of the main shaft uses a servo motor or a stepping motor, the upper roller for driving can be intermittently rotated, but at this time, the lead frame is also rolled on the large-diameter roller with a large contact area as described above. The outer peripheral part of the transmission, so the lead frame does not slip, can be carried out with high positioning accuracy to this paper size Applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) Please read the note of back Sj first Refill this page-13- 479046 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs V. Invention Description (11) to stop processing. c) The above-mentioned driving upper roller system has a structure in which the outer peripheral part of the transport for the rollers on the same axis receives the side edge portions of the lead frame, so that the recessed lead frame is needless to say, connected with the surface of the lead frame facing downward. During the electroplating process, it can also promote the movement of local electric ore required on the surface of each lead pin or fine needles with multiple needles to avoid damage or deformation. d) Yue and 'set the above-mentioned driving upper roller of the transport mechanism ~ The opposite roller is set to correspond to the width and width of the banner of the lead frame, and it is moved on the shaft to adjust the interval, so the lead frame can be transported in various widths. Apply ... [Brief description of the figure] Fig. 1 is a schematic side view showing an embodiment of a long lead frame transport mechanism of a plating apparatus according to the present invention. Fig. 2 is a schematic side view showing another embodiment of the long lead frame transport mechanism of the electroplating apparatus according to the present invention. Fig. 3 is a schematic front view showing an embodiment of a long lead frame conveying mechanism of an electric mining device according to the present invention. 〔Explanation of symbols〕 1 Lead frame 2 Upper roller 3 Inhibit roller 4 Lower roller 5 Spindle (Please read the note on the back first?-Stupid _ thing ^^ Fill this page) · 11111111 # · This paper size applies to Chinese national standards (CNS) A4 specification (210 X 297 mm) -14-479046 A7 _B7 V. Description of the invention (12) 6 Large diameter roller 7 Side edge 8 Conveying outer peripheral portion 9 Guiding peripheral edge portion 1 〇 Small diameter roller 1 1 Driving device 1 2 Driving device 1 4 Male screw part 1 5 Guide member 1 6 Female screw part 1 7 Side frame board 1 8 Tooth city a Angle W Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs Employees' Cooperatives Paper size Applicable to China Standard (CNS) A4 specification (210 X 297 mm) -15-

Claims (1)

479046 A8 B8 C8 D8 6. Scope of patent application 1 · A long lead frame conveying mechanism for electroplating device is an electroplating device for long lead frame 1, which is located at least behind the electroplating treatment tank, and is provided with and transported Driven upper rollers 2 · 'which are the same or higher than the upper position, and suppressing rollers 3 which are arranged on the sides in contact with each other, and lower lower rollers 4 are provided, and the above-mentioned driving upper rollers 2 are winding leads The surface of the frame 1 is used for pulling and rotating to drive, and is composed of a pair of disc-shaped large-diameter rollers 6 and 6 provided on the main shaft 5. The pair of large-diameter rollers 6 and 6 are disposed opposite to each other. Near the inner peripheral mask and the side edge portions 7 and 7 of the lead frame 1, the transport outer peripheral portion 8 '8' having a width that is approximately the same width, and near the outer outer peripheral surface has a large-diameter guiding peripheral edge portion 9 that can guide each side end edge, 9 shape, the suppression roller 4 is formed by a pair of small diameter rollers 10, 10 corresponding to one of the above-mentioned pair of large-diameter rollers 6, 6 and has the guide frame 1 pushed toward the large-diameter rollers 6, 6 side. Pressurizing means, and the lower roller 4 is provided on the upper side Spend driving roller side of the lead frame 2 to a slightly downward drooping form of transitional position. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. 2 ~~ The long lead frame transport mechanism of various types of electrical and mining equipment is an electroplating device for the long lead frame 1. It is located at least behind the electroplating treatment tank and The driving upper roller 2 ′, which is the same as or above the conveyer belt, and the suppression roller 3 provided on the side thereof in contact, and the lower lower roller 4, wherein the driving upper roller 2 is a winding lead The surface of the frame 1 is used for pulling and rotating, and a pair of disc-shaped large diameters set on the main shaft 5 in the opposite direction. The paper size is applicable to the Chinese National Standard (CNS) A4 (210X297 mm) -16- 479046 Ministry of Economic Affairs Printed by A8, B8, C8, D8, Consumer Cooperatives of the Intellectual Property Bureau. 6. The patent application scope consists of rollers 6, 6. The pair of large-diameter rollers 6, 6 are set to be close to the side edges of the inner peripheral mask and the lead frame 1. The outer peripheral portions 8 and 8 for transporting parts 7 and 7 having the same width as each other are each formed near the outer peripheral surface and have large-diameter guide peripheral portions 9 and 9 for guiding the side edges. At the same time, the above-mentioned pair of large-diameter rollers 6, 6 尙 has a guide member 15 corresponding to the width of the lead frame 1, whose interval w can be adjusted to slide on the main shaft 5, and the suppression roller 3 is a pair of small-diameter rollers corresponding to one of the above-mentioned large-diameter rollers 6, 6 1 0,1 Q, and has a pressurizing means for pushing the lead frame 1 to the large-diameter rollers 6,6, and the lower roller 4 is set slightly lower than the lead frame 1 passing through the driving upper roller 2 Position below the transition. This paper size applies to China National Standard (CNS) 8-4 specifications (210 × 297 mm) -17-