JPH07257790A - Method and device for feeding interlaying-paper - Google Patents

Abstract

PURPOSE:To prevent the adsorption of a plurality of sheets causing a device stop when an interlaying-paper is inserted between lead frames. CONSTITUTION:Interlaying-paper is cut out from an interlaying-paper base paper K for the interlaying-paper formed into an endlessly wound bundle. according to the length of a lead frame L, and the cut interlaying-paper is successively supplied onto the lead frame which is in laminating stage. An interlaying-paper feeding device 30 used for such an interlaying-paper feeding method has a drawing means 32 for drawing the interlaying-paper original paper K from the wound bundle, a fixing means 31 for fixing the top end of the drawn base paper K for the interlaying-paper, a cutting means 33 for cutting the interlaying-paper from the interlaying-paper original paper K in the state where the top end is fixed by the fixing means 31, and a transfer means 34 for transferring the cut interlaying-paper onto the lead frame.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inter-layer paper feeding method and apparatus for inserting inter-layer paper between lead frames in order to prevent defects from occurring when IC lead frames are stacked.

[0002]

2. Description of the Related Art When an IC lead frame is taken out by an unloading device after a processing step such as partial plating and laminated, the leads are prevented from being entangled and deformed, or the lead frame is rubbed against and scratched. Therefore, the interlayer paper is sequentially inserted between the lead frames. Examples of the interlayer paper feeding device for inserting the interlayer paper in this manner include, for example, Japanese Patent Application Laid-Open No. 2-86519 and Japanese Patent Application No. 4-298.
No. 187 is shown.

In these conventional inter-layer paper feeding devices, a large number of inter-layer papers cut in advance to a predetermined size are piled up in an inter-layer paper stocker, and the inter-layer papers are taken out by the adsorbing means and stacked by an unloading device. The method is to sequentially supply on the lead frame.

However, in the case of adsorbing the previously cut and stacked interlaminar paper by the adsorbing means as in the conventional interlaminar paper feeder, it is often the case that a plurality of sheets are adsorbed at one time. There was a problem that the device had to be stopped and removed. This is the process TAT
Since it also affects, it is desired to improve.

[0005]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an inter-layer paper feeding method and an apparatus thereof which can prevent the suction of a plurality of sheets, which causes the apparatus to stop.

[0006]

For this purpose, in the interlayer paper feeding method of the present invention, the interlayer paper is cut out from the base paper for interlayer paper which is an endless wound bundle according to the length of the lead frame. The cut-out interlayer paper is sequentially supplied onto the lead frame being laminated.

Regarding the inter-layer paper feeding device used in such inter-layer paper feeding method, a pull-out means for pulling out the inter-layer paper base paper from the bundle, a fixing means for fixing the leading end of the pulled out inter-layer paper base paper, and fixing The cutting means cuts out the interlayer paper from the base paper for interlayer paper with the front end fixed by the means, and the transfer means for transferring the cut interlayer paper onto the lead frame.

[0008]

According to the method and apparatus for supplying interlayer paper of the present invention, the size of the lead frame from the base paper for interlayer paper, which is continuously supplied from the winding bundle, is not absorbed by the material which has been cut and stocked in advance. Since the interlayer paper is cut out and inserted between the lead frames in accordance with the above, there is no possibility of adsorbing a plurality of sheets at once.

Further, since it is not necessary to stack the interlayer paper in advance using the stocker, the transfer means can be moved up and down by cutting out the interlayer paper above the lead frame stacking position in the unloading device. You can supply the interlayer paper just by doing. As a result, the transfer mechanism is simplified, and the interlayer paper can be supplied more quickly.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As an embodiment of the present invention, an interlayer paper supply device incorporated for unloading in a plating device for partially plating an IC lead frame will be described below.
First, the plating apparatus will be described. As shown in FIG. 1, in the plating apparatus M, the lead frames supplied from the loader 1 one by one are pretreated by the pretreatment unit 2, then partially plated by the plating unit 3, and then by the posttreatment unit 4. After the post-treatment, after passing through the dehydration roller 5 and the drying unit 6, the unloader 7 is used to unload. And
The lead frames are sequentially sent on the transport line from the loader 1 to the unloader 7, and the unloader 7 takes out the lead frames sequentially sent one by one and puts them in a stacked state. At that time, the interlayer paper supply device inserts the interlayer paper between the lead frames.

The unloading device 10 provided in the unloader 7 of this example will be described. As shown in FIGS. 2 and 3, the lead line is provided continuously to the conveying line constituted by the conveying rollers R, R ,. The stock section 11 for stacking the frames L and the lead frame L from the transport line
A pair of left and right supports 12 that receive and support the support 12
It is composed of four spring-loaded hinges 13 for urging the springs, and two air cylinders 14 for restricting the support body 12 to the support gap maintaining state against the urging force. Further, in this embodiment, a guide mechanism 15 for restricting the transport direction of the lead frame L is provided. Note that arrow A in FIG. 2 indicates the left-right direction (width direction), and arrow B indicates the front-rear direction (length direction).

The stock portion 11 includes a pair of left and right side wall portions 11a adjusted to have an interval suitable for the size of the lead frame L,
11b and a cross-shaped bottom portion 11c that vertically moves between the side wall portions 11a and 11b. The left and right end portions of the bottom portion 11c are openings 11 provided on the side wall portions 11a and 11b.
It is inserted in d and guided. And this bottom part 11c
Is moved up and down by the step motor 11e so that the lead frame L at the uppermost position always maintains a constant height. That is, when the lead frame L is dropped into the stock portion 11, it is sensed by the sensor S ₁ , whereby the step motor 11e operates and the bottom portion 11c moves down by one lead frame. Furthermore, the stock section 11 of this example
Sensor strip Sp vertically moving in conjunction with the bottom 11c is provided at the upper limit position by the sensor _{S 2, S 3, S 4} , full announcement position, so full position is informed to the operator are detected Therefore, the laminated state of the lead frame L can be easily monitored. The pallet board 11p for mounting the lead frame L is placed on the bottom portion 11c. The pallet board 11p is formed by adjusting the size in advance according to various shapes of the lead frame L. That is, while the pallet board 11p is placed on the bottom portion 11c, the side wall portions 11a and 11b are narrowed so that the side wall portions 11a and 11b are pallet board 11p.
The width of the stock portion 11 is automatically adjusted according to the shape of the lead frame L when the width is regulated by abutting against the.

The pair of left and right supports 12 have the same structure.
The stock portion 11 is rotatably mounted in openings 18 and 19 formed by frame members 16 and 17 extending upward from the side wall portions 11a and 11b, respectively. That is, each of the base end portions 12a has the upper wall portions 18a and 19a of the openings 18 and 19, respectively.
A pivot fulcrum portion is provided by being hinge-connected to, and pivots about the pivot fulcrum portion. And the transport rollers R, R,
Each tip 12 extending below the pass line of ……
b is bent and formed into a key shape, and a support portion 12c is formed. Further, the tongue piece 1 is provided at the center of each base end 12a.
2d is extended toward the inside.

In this example, the hinge 13 with the spring is the support member 12.
It also serves as a rotation fulcrum. That is, the hinges with springs 13 are attached to both sides of the tongue piece 12d at each base end 12a of the support body 12, and these hinges with springs 1 are attached.
By attaching 3 to the above-described upper wall portions 18a and 19a of the openings 18 and 19, the hinges 13 with springs serve as the rotation fulcrum portions of the support body 12, and the respective tip portions 12b are separated from each other, that is, in the open state. The support 12 is urged to rotate.

The air cylinder 14 includes the frame members 16, 1
7 tongues 12d of the support 12
Are respectively linked to. With the tongue piece 12d pulled up by the air cylinder 14 against the urging force of the spring hinge 13, the respective support portions 12c of the support body 12 have the width of the lead frame L as shown in FIGS. The corresponding support intervals are provided to support the left and right ends of the lead frame L. When the working gas of the air cylinder 14 is released by releasing the working gas, all the hinges 13 with springs have the same biasing force, so that the biasing force causes the supporting body 12 to simultaneously show the arrows X ₁ , X ₂ (see FIG. 3) to rotate the support portion 1
2c is designed to open.

The guide mechanism 15 includes a pair of left and right air cylinders 15a and 15b as driving means, a pair of support members 15c and 15d that move in a direction toward and away from the air cylinders 15a and 15b, and a conveyance roller R. R ...
It is composed of a plurality of rod-shaped members 15e, 15e, ... Standing up in a row on the support members 15c, 15d so as to project above the pass line from between the spaces. Support member 1
5c and 15d are provided along the transport line, and the end on the stock portion 11 side is the side wall portion 11 of the stock portion 11.
It engages with the engagement pins P, P provided on a and 11b, respectively, and slides along the engagement pins P, P. As a result, the side wall portions 11a and 11a at the restricting position shown by the solid line in FIG.
It comes into contact with b and stops. Therefore, the air cylinder 15a,
The position of 15b is also adjusted in association with the side walls 11a and 11b.

Further, above the transport rollers R, R, ..., The rear end of the lead frame L whose transport direction is regulated by the guide mechanism 15 is additionally pushed to move the lead frame L by a certain distance to support the lead frame L. Back-boost means 20 are provided for delivering to a fixed position on the body 12. The post-pushing means 20 has elevating arms 20b that always move a certain distance in parallel with the conveying direction of the lead frame L along the rail members 20a installed above the conveying rollers R, R, ... The elevating arm 20b descends after the lead frame L is regulated by the guide mechanism 15, and its tip can come into contact with the rear end edge of the lead frame L.

When the lead frames L are stacked by the unloading device 10 as described above, in order to prevent defects such as scratches due to entanglement or rubbing between the leads of the lead frame L, the inter-layer paper feeding device 30 is used. 1 is provided between each of the lead frames L to which the paper is supplied and stacked on the stock section 11.
It is inserted one by one. The interlayer paper supply device 30 of this embodiment is configured as follows.

That is, the endless roll base paper K (not shown) is drawn out by the pull-out means 32 through the fixing means 31 in a continuous state from the roll bundle. When the base paper K for interlayer paper is pulled out by a predetermined length, it is fixed by the fixing means 31 and cut by the cutting means 33. The interlayer paper cut out by the cutting means 33 is supplied to the stock section 11 of the unloading device 10 by the transfer means 34.

The fixing means 31 includes a pressing piece 31a, an air cylinder 31b for moving the pressing piece 31a up and down,
It is composed of a pressure receiving member 31c. When the pressing piece 31a is raised by the air cylinder 31b, the interlayer paper base paper K can pass between the pressing piece 31a and the pressing receiving member 31c. On the other hand, when the pressing piece 31b is lowered by the air cylinder 31b, the base paper K for interlayer paper is pressed by the pressing piece 31a.
Thus, the base paper K for the interlayer paper is pressed against the press receiving member 31c and is fixed so as not to loosen due to excessively coming out of the base paper K for the interlayer paper or to return to the winding side.

The pull-out means 32 comprises a gripping unit 32b which slides in the front-rear direction along the rail member 32a. The gripping unit 32b has a pair of upper and lower gripping hands 32c that open and close, and the gripping hand 32c grips and pulls out the base paper K for interlayer paper.

The cutting means 33 includes a pair of upper and lower air cylinders 33a and 33b and these air cylinders 33a and 33b.
And scissors 33c that open and close by. The cutting means 33 is attached to a support wall 36 to which the fixing means 31 is attached, so that the cutting means 33 is adjusted together with the fixing means 31 in the lengthwise direction.

The positions of the fixing means 31 and the cutting means 33 are adjusted by turning the adjusting handle 37. That is, the adjustment handle 37 and the support wall 36 are screwed together, and when the adjustment handle 37 is turned, the support wall 36 slides in the longitudinal direction to adjust the position.

The transfer means 34 is structured to suck and transfer the cut out interlayer paper, and uses suction pads 34b and 34c which move up and down along the rail member 34a. Further, when sucked by the suction pads 34b and 34c, the suction table 34d is applied to the lower portion of the base paper K for interlayer paper.
have. The suction base 34d is hinged at its base end by two hinges 34e, and is rotated by an air cylinder 34f. That is, the suction pad 3
When the 4b and 34c move up and down, they are in a vertical state with the tip end facing downward so as not to interfere with the movement, and when performing suction, they are rotated to a horizontal state with the tip end facing sideways. It is applied to the lower surface of the base paper K for interlayer paper.

The sensor S ₆ is a sensor for notifying that the winding bundle of the base paper K for interlayer paper has become empty. When the base paper K for interlayer paper becomes less and the thickness of the winding bundle becomes thinner, this sensor S 6 is used. It is detected at ₆ and the operator is notified of the time to replace the bundle.

Next, the operation of the inter-layer paper feeding device 30 of this embodiment will be described step by step.

When the lead frame L is sent over the conveying rollers R, R, ..., It is detected by the sensor S ₅ . At this time, the guide mechanism 15 is in the separated position shown by the imaginary line in FIG. 2, and the support body 12 has a support interval in which the tongue piece 12d is pulled up by the air cylinder 14 to support the lead frame L. Further, the lifting arm 20b of the rear pushing means 20 is in the raised position.

When the lead frame L is advanced and entered between the guide mechanisms 15, the air cylinder 15 of the guide mechanism 15 is moved.
a and 15b are actuated, and the rod-shaped member 15 is erected on the left and right.
.., e, 15e, ... Move in the direction of approaching each other to become the regulating position, and their peripheral surfaces come into contact with the left and right end edges of the lead frame L to regulate the conveying direction. This allows
It is corrected even if the lead frame L is displaced in a diagonal direction. When the lead frame L enters the space between the guide mechanisms 15 and the conveyance direction is regulated, the elevating arm 20b of the back pushing means 20 descends to be able to contact the rear edge of the lead frame L, and then the rail member. Move along 20a to push the lead frame L towards the support 12 in an auxiliary manner. Therefore, the lead frame L is sent by the transport rollers R, R, ... And moved while being pushed by the back pushing means 20, and finally is completely transferred to the support 12 by the back pushing means 20. That is, the rearward pushing means 20 is adapted to move a certain distance from the final conveyance roller R to a position slightly closer to the support body 12, and therefore the support body 12 is moved.
The lead frame supporting position in is fixed by the rearward pushing means 20.

The left and right ends of the lead frame L transferred to the support 12 in this manner are temporarily supported by the respective support portions 12c of the support 12. After that, air cylinder 1
The operating force of 4 is released, the support 12 is swung quickly by the biasing force of each spring hinge 13, the support portions 12c are opened in the direction in which they are separated from each other, and the lead frame L is dropped onto the pallet board 11p. Then, the dropped lead frame L is detected by the sensor S ₁ provided in the stock portion 11, and the step motor 11e is operated to operate the lead frame 1
The pallet board 11p for one sheet descends.

On the other hand, in the inter-layer paper feeding device 30, when the lead frame L flowing on the transport line passes the sensor S ₁ , the gripping unit 32b operates to grip the gripping hand 32.
The base paper K for interlayer paper protruding from the fixing means 31 by c
After gripping the tip end of the
Rises, and the gripping unit 32b moves to the rail member 32.
Slide along a and pull out the base paper K for interlayer paper of a predetermined length. When the base paper K for interlayer paper is pulled out by a predetermined length, the pressing piece 31a of the fixing means 31 descends to press and fix the base paper K for interlayer paper. At the same time, the suction base 34d is rotated and applied to the lower surface of the base paper K for interlayer paper,
Then, the suction pad 3 is provided from above along the rail member 34a.
4b and 34c descend and adsorb the drawn out base paper K for interlayer paper. After that, the air cylinder 3 of the cutting means 33
3a and 33b are actuated and the scissors 33c cut the drawn out interlayer paper K into a length that fits the lead frame L.

Then, when the lead frame L is dropped into the stock portion 11 as described above, the suction base 34d is rotated to be in the vertical state, and then the suction pads 34b, 3b.
4c adsorbs the cut-out interlayer paper and descends through the space between the supports 12 in the open state. Then, the suction is released and the interlayer paper is dropped on the lead frame L stacked on the stock portion 11. After releasing the interlayer paper, suction pad 3
4b and 34c rise and enter a standby state.

When the lead frame L has been transferred to the stock section 11 and the inter-layer paper has been supplied thereon, the tongue pieces 12d of the support body 12 are pulled up by the air cylinder 14,
The support portion 12c serves as a support interval. In addition, the guide mechanism 1
5 is returned to the separated position, and the rearward pushing means 20 is also in the initial position to prepare for the subsequent lead frame L. On the other hand, in the inter-layer paper feeding device 30, the pull-out unit 32b slides along the rail member 32a in order to hold the leading end of the inter-layer paper base paper K protruding from the fixing means 31 after being cut out, and is in an initial state. After that, by repeating the above operation, unloading is performed while inserting the interlayer paper between the lead frames.

[0033]

As described above, according to the present invention,
Since the inter-layer paper is cut out from the base paper for the inter-layer paper supplied in a continuous state from the bundle in accordance with the size of the lead frame and inserted between the lead frames, there is no possibility of adsorbing a plurality of sheets at once. Therefore, the workability of unloading is significantly improved.

Further, since the transfer means can be moved up and down by cutting out the interlayer paper above the lead frame stacking position, the transfer mechanism can be simplified and the interlayer paper can be supplied more quickly. It is possible to continue.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of a plating apparatus in which an interlayer paper supply device is used.

FIG. 2 is a perspective view of a main part showing an embodiment of an interlayer paper feeding device according to the present invention.

FIG. 3 is an SA for explaining the unloading device shown in FIG.
-A sectional view taken along the line SA.

[Explanation of symbols]

 10 Unloading Device 30 Interlayer Paper Feeding Device 31 Fixing Means 32 Drawing Means 33 Cutting Means 34 Transfer Means

Claims (2)

[Claims] 1. An unloading device from a transfer line
An inter-layer paper supply method for inserting inter-layer paper between lead frames that are taken out one by one and stacked, and adjust the length of the lead frame from the inter-layer paper base paper that is an endless bundle. An inter-layer paper feeding method, characterized in that the inter-layer paper is cut out by means of this, and the cut-out inter-layer paper is sequentially fed onto the lead frame being laminated. 2. An interlayer paper feeding device used in the interlayer paper feeding method according to claim 1, wherein a pull-out means for pulling out the interlayer paper raw paper from the bundle and fixing the leading end of the pulled-out interlayer paper raw paper. An interlayer paper feeding device comprising: fixing means, cutting means for cutting the interlayer paper from the base paper for interlayer paper in a state where the leading end is fixed by the fixing means, and transfer means for transferring the cut interlayer paper onto the lead frame.