JPH11193492A - Device for cutting and sticking masking tape - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for cutting and sticking masking tape capable of increasing the precision in spacers, furthermore capable of improving the cutting and sticking precision of masking tape and moreover capable of improving the precision in plating. SOLUTION: In a device 1 in which masking tape MT is continuously cut in the longitudinal direction of a long size metallic strip J and is stuck at the time of cutting the stock of masking tape into a prescribed number and width in the longitudinal direction, as a plurality of spacers which are inserted by a shaft together with and between cutter blades, held and supported with a binding means in the axial direction of the shaft, the materials quenched by heat treatment are worked at ±0.005 mm dimensional precision and are used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a terminal, a connector,
Gold used for lead materials such as IC lead frames,
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cutting and affixing a masking tape for protecting portions other than those requiring plating in a predetermined width with high precision in a manufacturing process of stripe plating strips of silver, solder or the like.

[0002]

2. Description of the Related Art Strips are used for leads such as terminals, connectors, and IC lead frames. The strip-plated strip is a strip-shaped substrate in which a plated portion and a non-plated portion are continuously plated in a stripe shape in the longitudinal direction of a long metal strip such as a copper alloy or stainless steel. The process of manufacturing striped strips is generally a two-step process of taping a masking tape to form a non-plated portion and plating a plated portion with gold, silver, solder, etc. Is done. In some cases, the long metal strip is plated with a base such as copper or nickel before taping.

Conventionally, as described in JP-A-6-68239 (see FIG. 5), a masking tape raw material 103 has a predetermined number and width in the longitudinal direction before being attached to the long metal strip 101. Is cut with a razor 108. Thereafter, the unnecessary masking tape 110 is removed by the cutting and separating device 114. The masking tape MT is a tape guide 1
It is supplied to the sticking roll 105 of the sticking device 111 after being guided to 02, and then is pressed and stuck by the pressure roll 106. The above steps are performed continuously.

[0004]

However, recently,
With the improvement in the degree of integration and miniaturization of electronic components, the requirements for dimensional accuracy for each component have become strict. Needless to say, there is a demand for stripe plating strips having a positional accuracy of ± 0.15 mm or less. In the future, it is expected that demands will become even more stringent. In the striped strip, a tape with high elasticity is stuck on the non-plated portion, but the tape is shrunk in the width direction because it is subjected to longitudinal tension at the time of sticking.
For this reason, the thinned masking tape 104 is
In the conventional method of sticking to the long metal strip 101 via the guide 102 and the sticking roll 105 of the sticking device 111, when strict dimensional accuracy is required, it is difficult to achieve the demand.

After slitting the masking tape, the present inventors also adhered the masking tape of the non-plated portion to the metal strip at the same time as the masking tape of the plated portion. After stripping off, plating was performed, and an invention in which the dimensional accuracy (about 0.3 mm or less) of stripe plating was dramatically improved was made, and a patent application was filed (Japanese Patent Application No. 8-216834).

However, even with this method, 0.1 mm
I was not satisfied with the following more stringent requirements. The reason will be described with reference to FIG. The cutting device 10 schematically includes a cutter 11, a holding mechanism that holds the cutter 11,
It comprises a slide mechanism for sliding the holding mechanism, a measurement mechanism for precisely measuring the widthwise position of the cutter 11, and a fixing mechanism for fixing the slide of the cutter 11 at a predetermined position.

[0007] The cutter 11 has a long axis portion and a short axis portion on both sides of the stepped portion 11f, and a shaft 11e having a threaded portion at each end, and a shaft passing through the long axis portion of the shaft 11e. And a plurality of spacers 11b supported axially between the cuttable blades 11a, and a cuttable by being screwed into the end of the long axis portion of the shaft 11e. -D 11a and spacer 1
It comprises a nut 11c for integrally fixing the nut 1b, and a washer 11d for preventing the nut 11c from being loosened.

The holding mechanism comprises a holder 13b protruding from the upper left side in FIG. 4 and a cutter holder 13 having a mounting hole 13a provided at the tip of the holder 13b in the width direction of the metal strip J. The cutter 11 has a short axis portion inserted into the mounting hole 13a of the cutter holder 13, and after being adjusted in angle, is fixed by the mounting nut 18 with the mounting washer 18a interposed therebetween.

The slide mechanism has a base 19 fixed to the masking tape attaching apparatus 1 and a stage 12 provided on the base 19 and having a linear guide mechanism slidable in the width direction of the metal strip J. And is configured. The cutter holder 13 is mounted on the stage 12.

The measuring mechanism is a micrometer mounting bracket 17 mounted on the lower side of the base 19 in FIG.
And a micrometer 16 fixed to a micrometer mounting bracket 17.

The fixing mechanism is provided on the base 19 and on the side opposite to the micrometer 16, and has a pair of bases 15b having screw holes in the slide direction of the stage 12, and a pair of bases 15b.
b, and a lock nut 15a for fixing the push bolt 15 at a predetermined position.
It is composed of

The cutter 11 rotates the micrometer handle 16b of the micrometer 16 to move the plunger 16a to a predetermined position, and then tightens the push bolt 15 to fix the stage 12 and fix the push bolt 15a. Is fixed with a lock nut 15a. In addition, the stage 12 and the cutter holder 13 can be fixed with the wing bolts 14, so that the cutter 11 can be easily and safely attached and detached with the cutter 11 attached to the cutter holder 13.

However, in the cutting apparatus 10 shown in FIG.
The spacer 11b was made of resin or ordinary steel, passed through a shaft 11e together with a large number of cut blades 11a, and fixed to a thread formed on the outer peripheral surface of the tip of the shaft 11e with a nut 11d. . When the conventional spacer 11b is made of such a material, the spacer is compressed and deformed when tightened, and a desired dimensional accuracy cannot be obtained.

Therefore, the object of the present invention is to pay attention to the accuracy of the spacer, which was not considered at all in the above-mentioned prior art, and to improve the accuracy in this part by cutting and cutting the masking tape. An object of the present invention is to provide a masking tape cutting / applying device capable of improving the attaching accuracy and, consequently, the plating accuracy.

[0015]

That is, the present invention relates to an apparatus for continuously cutting and affixing a masking tape in the longitudinal direction of a long metal strip. When cutting to the specified number and width, cuttable
The material quenched by heat treatment is used with a dimensional accuracy of within ± 0.005 mm as a plurality of spacers that are axially supported by fastening means together with and through a shaft between them. The present invention provides a masking tape cutting and pasting apparatus characterized by performing the following.

According to a second aspect of the present invention, in the masking tape cutting and attaching apparatus according to the first aspect, the material quenched by the heat treatment is tool steel or alloy steel. . According to a third aspect of the present invention, there is provided the cutting and pasting device for a masking tape according to the first or second aspect, further comprising a metal strip at a position before and after attaching the cut masking tape to the metal strip. It is characterized in that it has a pair of rolls for guiding by being sandwiched from above and below and from left and right. According to a fourth aspect of the present invention, there is provided the cutting and sticking apparatus for a masking tape according to the first or second aspect, further comprising a metal strip at a position after the cut masking tape is attached to the metal strip. Detecting the position in the width direction by a sensor, and guiding the metal strip disposed at either the position before or after the attaching position to a predetermined position in the width direction by a pair of rolls sandwiched from above and below and from the left and right. It is characterized by.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. First, an outline of a masking tape sticking apparatus 1 including a masking tape cutting and sticking apparatus according to the present invention will be described. The masking tape sticking device 1 generally includes a front guide device 20 for precisely controlling and guiding the position of the metal strip J flowing at a constant speed;
A supply device for the masking tape MT and a first pressing device 60
And a rear guide device 20 for precisely controlling and guiding the position of the metal strip J to which the masking tape MT is attached, and a scrap tape ST peeling device.

As shown in FIG. 3, the guide device 20 includes a pair of rolls 21 arranged so as to sandwich the metal strip J in the width direction, and one of the rolls 21 with respect to a vertical axis. A slide roll holder 22 rotatably supported and slidably provided in the width direction of the metal strip J, and the other roll 21 are rotatably supported on a vertical axis and fixed. The fixed roll holder 23 provided, a linear guide mechanism for enabling the slide roll holder 22 to slide in the width direction of the metal strip J, a mounting portion for fixing the fixed roll holder 23, and a masking tape attaching device. A slide base 24 having a plurality of mounting holes 29 for fixing the slide base 24;
And a handle 28 for sliding the linear guide mechanism of the gear 24.

A groove 21a is formed in the circumference of the roll 21 so that both ends of the metal strip J can be fitted therein. Groove 21
The metal strip J is fitted to both ends of the metal strip J.
Is precisely controlled and guided not only in the width direction but also in the vertical direction. The guide device 20 can guide metal strips having different width dimensions by rotating the handle 28 to slide the slide roll holder 22. The handle 28 may be provided with a handle rotation angle or a scale of a slide amount corresponding to the handle rotation angle. Further, a measuring device capable of directly measuring the slide amount of the slide roll holder 22 may be provided.

In the preferred embodiment shown, such a guide device 20 is installed before and after the first crimping device 60. The reason is that the metal strip J has a slight bending, typically a bending of 0.1 mm to 3 mm per 1000 m. Therefore, if the metal strip J is passed through the line without restriction, the metal strip J meanders, and no positional accuracy in the width direction can be obtained at all. This is tightly guided in the left and right direction and the up and down direction of the metal strip J by the front guide apparatus 20 and the rear guide apparatus 20 installed before and after the first crimping apparatus 60 to obtain precise position control of the metal strip J. I have.

Alternatively, a masking tape MT
At a position after the metal strip J is attached to the metal strip J, the position in the width direction of the metal strip J is detected by a sensor, and the metal strip J is positioned by the guide device 20 disposed either before or after the sticking position. It can also be guided to a predetermined width direction position by a pair of rolls sandwiched from above and below and from left and right. In this case, the guide device 20 or the slide base 24 together with the metal strip J
Further, a mechanism for moving in the width direction is required. And
Servo control is performed on the guide device 20 or the slide base 24 based on the signal of the sensor to correct the position of the metal strip J.

With this configuration, the masking tape MT
Will be sent to the first crimping device 60 with a dimensional accuracy within ± 0.005 mm.
Thereby, the displacement in the width direction on the side of the metal strip J is reduced, and the dimensional accuracy of the stripe plating can be improved.

The masking tape supplying device is a tape roll T obtained by rolling a raw material of the masking tape MT in a roll shape.
A delivery shaft 6 driven by a motor with an R attached thereto, a supply dancer 30 for increasing and decreasing the delivery speed of the masking tape and the tension of the masking tape, and a masking tape MT are provided. And a cutting device 10 provided for cutting continuously to the width and the number of pieces.

Here, it is preferable to provide a touch roll 5 on the sending shaft 6. The touch roll 5 includes an arm, a touch roller, and pressing means (not shown). The masking tape MT can be smoothly sent out while keeping the sending position of the masking tape MT constant, so that the dancer arm can swing smoothly.

The first crimping device 60 includes a first lower roll 62 fixedly provided on the masking tape attaching device 1,
The first lower roll 6 is provided vertically above the first lower roll 62.
And a first upper roll 61 having a pressing mechanism capable of increasing / decreasing a pressure force applied to the roller 2.

The pressing mechanism of the first upper roll 61 includes a bracket 64 for pivotally supporting the first upper roll 61,
A bracket supporting portion 65 that pivotally supports the bracket 64 and a pivot portion 6 provided on a side opposite to the first upper roll 61 that is supported by the bracket supporting portion 65 therebetween.
And a base 69 connected to the screw 68 and fixed to the masking tape attaching apparatus 1.
It is composed of

The screw 68 has two nuts mounted thereon, and the pressing force of the first upper roll 60 is increased or decreased by pressing the pivot side of the bracket 64 with the nut.
When the adjustment of the pressing force is completed, a certain pressing pressure can be maintained by tightening and locking the other nut. In addition to the above pressing mechanism, the pressing mechanism may be configured using a spring, a weight, or the like.

The stripping device includes a stripping roll 50 for stripping the masking tape MT from the metal strip J, and a winding shaft for winding and collecting the stripped scrap tape ST by motor driving. And a recovery dancer 40 for controlling the winding speed of the winding shaft 7 of the scrap tape ST and the tension of the scrap tape ST by increasing or decreasing the tension.

The peeling roll 50 is a roll having the smallest possible outer diameter.
La should be used. If a roller having a large outer diameter is used, the time required for the masking tape MT and the metal strip J to completely separate from each other becomes longer, so that chatter vibration of the metal strip J and metal strip J
Is involved. Winding shaft 7 and recovery dancer 40
Include almost the same configuration as the delivery shaft 6 and the supply dancer 30 of the masking tape supply device.
Detailed description is omitted.

In order to improve the adhesiveness between the metal strip J and the masking tape MT during pressure bonding, the masking tape M
It is preferable to provide a preheating heater 3 for preheating the metal strip J before the T compression bonding as a process preceding the pre-stage guide device 20. Furthermore,
In order to increase the adhesiveness between the masking tape MT and the metal strip J after the pressure bonding, a post-heating heater 4 and a guide device 80 are provided in a subsequent step.
And a second crimping device 70 may be provided. Post-heater heater 4
Is preferably the same as the heater 3 for preheating. The guide device 80 is preferably the same as the guide device 20. The second crimping device 70 is preferably the same as the first crimping device 60. Then, it is preferable to provide an image sensor 8 for inspection for continuously inspecting whether the masking tape MT of the masking metal strip MJ whose pressure has been completed is completed to a predetermined size.

Next, the cutting and sticking device for a masking tape according to the present invention will be described in detail. First, the metal strip J is sandwiched between the grooves 21a of the pair of guide rollers 21 of the front guide device 20 and is restrained in the width direction.
Supplied to In addition, a masking tape MT is attached to the first crimping device 60 from a tape roll TR mounted on the delivery shaft 6.
Is supplied at a same speed as that of the metal strip J through the supply dancer 30. The masking tape MT is cut to a predetermined width by the cutter 11 of the cutting device 10 according to the present invention immediately before being sent to the first crimping device 60.

A feature of the present invention is that the nut 11 is inserted through the shaft 11e together with and between the cut blades 11a.
and a plurality of spacers 11b which are supported by being sandwiched in the axial direction by c.
± 0.005 for the material quenched by heat treatment
The point is that it is used after processing with dimensional accuracy within mm. Preferably, the spacer 11b is tool steel or alloy steel. The material is hardened by quenching, and when the nut 11c screwed to the shaft 11e is tightened, the spacer 11b
Does not substantially deform, and the shaft 11e or the nut 11c deforms more. As a result, the dimensional accuracy of the spacer 11b is substantially maintained.

On the other hand, the dimensional accuracy of the masking tape MT is the same as the invention described in Japanese Patent Application No. 8-216834 of the present inventors. The tape is also affixed to the metal strip at the same time as the masking tape of the plated portion, and thereafter, only the scrap tape ST of the non-plated portion is peeled off.
Masking tape M with dimensional accuracy within ± 0.005mm
T can be cut and pasted.

After the masking tape MT and the metal strip J are crimped by the first crimping device 60, unnecessary masking tapes are used.
The tape MT is peeled off by the peeling roll 50 as a scrap tape ST. Stripped scrap tape S
T is wound around the winding shaft 7 via the recovery dancer 40. If the metal strip J from which the unnecessary scrap tape ST has been stripped off is transferred to the plating apparatus in the next step to perform plating, the strip plating accuracy will be within ± 0.1 mm. Thus, the combination of the invention described in Japanese Patent Application No. 8-216834 and the present invention makes it possible to dramatically improve the dimensional accuracy of stripe plating for the first time.

(Embodiment) An embodiment of the present invention will be described with reference to a conventional method shown in FIG. 5 and Japanese Patent Application No. 8-216834 shown in FIG.
Table 1 shows a comparison with the above method.

[0036]

[Table 1]

While the conventional method shown in FIG. 5 is about ± 1.0 mm and the method of Japanese Patent Application No. 8-216834 shown in FIG. 4 is about ± 0.15 mm, the method of the present invention is
Further improvements have been made, and strip plating with an accuracy of ± 0.1 mm or less has become possible.

[0038]

As described above, in the masking tape cutting and pasting apparatus of the present invention, when cutting the masking tape into a predetermined number and width in the longitudinal direction, the cut blade is used. To be used as a plurality of spacers that are axially sandwiched and supported by fastening means together with and through a shaft between them, by processing a material quenched by heat treatment with a dimensional accuracy of ± 0.005 mm or less. As a result, good dimensional accuracy of the stripe plating, which could not be obtained conventionally, was obtained. These are the improvement of the spacer in the slitter, the masking text.
This is brought about by the improvement of the positional accuracy of the metal strip at the time of sticking.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a masking tape cutting and pasting apparatus according to the present invention.

FIG. 2 is an enlarged plan view of a main part of FIG.

FIG. 3 is a perspective view of a guide device used in the masking tape attaching device shown in FIG.

FIG. 4 is a plan view of a cutting device used in a masking tape attaching device disclosed in Japanese Patent Application No. 8-216834.

FIG. 5 is a schematic view showing a conventional masking tape attaching method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Masking tape sticking device 3 Preheating heater 4 Afterheating heater 5 Touch roll 5a Arm 5b Touch roller 6 Sending shaft 7 Winding shaft 8 Image sensor 10 Cutting device 11 Cutter 11a Cutter blade 11b Spacer 11c Nut 11d Washer 11e Shaft 11f Stepped portion 12 Stage 13 Cutter holder 14 Wing bolt 15 Push bolt 15a Lock nut 15b Base 16 Micrometer 16a Plunger 16b Micrometer handle 17 Micrometer mounting bracket 20 Guide Device 21 Roll 22 Slide Roll Holder 23 Fixed Roll Holder 24 Slide Base 28 Handle 29 Mounting Hole 30 Supply Dancer 40 Recovery Dancer 50 Peeling Roll 60 First Crimping Device 61 First Upper Roll 62 first lower roll 64 bra Tsu DOO 65 bracket support pin 66 pivot portion 68 threaded portion 69 base - scan 70 second pressure bonding device 80 second guide device J metal strip MJ masking metal strip MT Masking tape - flop ST scrap tape - flop TR Te - Pro - Le

Claims (4)

[Claims] An apparatus for continuously cutting and affixing a masking tape in the longitudinal direction of a long metal strip, wherein the raw material of the masking tape is cut into a predetermined number and width in the longitudinal direction. The material quenched by the heat treatment is provided as a plurality of spacers which are axially held by fastening means together with and between the blades and between the blades.
A masking tape cutting / pasting apparatus characterized in that it is processed and used with a dimensional accuracy of 0.005 mm or less. 2. The masking tape cutting and sticking apparatus according to claim 1, wherein the material quenched by the heat treatment is tool steel or alloy steel. -Pasting device. 3. The masking tape according to claim 1 or 2.
The cutting and pasting device for a tape further includes a pair of rolls for sandwiching and guiding the metal strip from above and below and right and left at positions before and after sticking the cut masking tape to the metal strip. Cutting and pasting device for masking tape. 4. The masking tape according to claim 1 or 2.
In the cutting and pasting device for a tape, the position in the width direction of the metal strip is detected by a sensor at a position after the cut masking tape is pasted on the metal strip, and the position is determined before or after the sticking position. A cutting and pasting apparatus for a masking tape, characterized in that a metal strip disposed at such a position is guided to a predetermined widthwise position by a pair of rolls sandwiched from above and below and from left and right.