JPH1158462A - Method and device for gate cutting for sealed product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce an equipment stop time at the time of replacement of kinds of products by separating and removing runner sections of a plurality of kinds of sealed products only by a simple replacement. SOLUTION: Runner sections 5 are separated by driving regating pins 18 in the direction of separating a lead frame 3 from the runner sections 5 by a driving means 12 in a sealed product 1 of A type with regating holes on a runner line of the lead frame 3. Also the runner sections 5 are separated by supporting the sealed product to be rocked by a product support rocking plate and converting the one direciton operation to the rocking operation in a sealed product of B type without regating holes. The gate cutting for two kinds of sealed products of A type and B type can be carried out by the replacement of a first group of 15 with the second group of parts or vice versa by the arrangement.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for cutting a gate of a sealed product for separating and removing a runner after sealing in a sealed product such as a semiconductor resin package.

[0002]

2. Description of the Related Art A conventional method and apparatus for separating / removing a runner after sealing and a cull at the base of a sealed product such as a semiconductor resin package will be described with reference to FIGS.

Conventionally, as a method of separating a runner and a cull portion, two methods are generally used according to the type of a sealed product to be processed.

The first method is to separate and remove the runner portion 5 from an A-type sealed product 1 as shown in FIG. 3 using an apparatus as shown in FIG. In FIG. 3, a runner 5 is tightly attached to the lead frame 3 of the sealed product 1 after the sealing molding, and is integrated with the cull 6 via the runner 5. In the lead frame 3 of the sealed product 1,
Regate holes 4 are formed at positions corresponding to runner portions 5.

In FIG. 5, a driving means 32 is provided above a product receiving plate 31 provided with a relief having a shape similar to the shape of the runner part, and can be driven in the near and far directions, and a movable block driven by the driving means 32 is provided. Regate pin 3 on 33
4 and a holding block 35 having a floating mechanism are provided.

To separate and remove the runner portion 5 from the sealed product 1, the sealed product 1 is placed on a product receiving plate 31 in a state where it is positioned by pins or the like, and the driving means 32 is driven to drive the movable block. 33 is moved toward the product receiving plate 31, and the lead frame 3 of the sealed product 1 is clamped and fixed between the holding block 35 and the product receiving plate 31. 5
Is pressed down to separate the runner 5 from the lead frame 3, and the runner 5 and the cull 6 are removed from the sealed product 1.

The second method is to separate and remove the runner portion 5 from the B-type sealed product 2 as shown in FIG. 4 using an apparatus as shown in FIG. In FIG. 4, the runner 5 is tightly attached to the lead frame 3 of the sealed product 2 after the sealing molding, and is integrated with the cull 6 via the runner 5. No regate hole is formed in the lead frame 3 of the sealed product 2.

In FIG. 6, a product receiving oscillating plate 36 provided with a relief having a shape similar to the shape of the runner portion is supported so as to be able to oscillate around a fulcrum C, and is oscillated upward by a driving means 37. It is configured to be possible. A work holder 39 that can swing and open and close around a fulcrum 38 is installed on the product receiving swing plate 36, and is driven by a driving unit 40 to swing in the closing direction to thereby lead the lead frame of the sealed product 2. 3 is configured to be clamped between the fulcrum C and the product receiving swing plate 36. The cull part 6
Receiving block 41 which supports the driving means 4 from below.
It is arranged to be able to move up and down at 2.

When the runner portion 5 is separated and removed from the sealed product 2, first, the work holder 39 is swung by the driving means 40, and the sealed product 2 is held and fixed on the product receiving swing plate 36. Thereafter, the product receiving rocking plate 36 is rocked upward around the fulcrum C by the driving means 37 while the cull portion 6 is supported from below by the cull receiving block 41, and the sealed product 2 is rocked. Runner part 5 to lead frame 3
Then, the runner part 5 and the cull part 6 are removed from the sealed product 2 by lowering the cull receiving block 41.

[0010]

However, in the above-described method of separating and removing the runner portion and the cull portion, when the production is performed flexibly in a wide variety of product packages, a large amount of equipment and mechanism is required. Since the change is required, there is a problem that the work time associated with the change of the product type is increased, and the equipment operation rate is reduced.

In view of the above-mentioned conventional problems, the present invention can flexibly cope with separation / removal of a runner portion in a plurality of types of sealed products only by replacing a small number of parts, and can reduce equipment downtime at the time of product type switching. It is an object of the present invention to provide a method and an apparatus for cutting a gate of a sealed product.

[0012]

According to the method for cutting a gate of a sealed product of the present invention, a sealed product of A type having a regate hole on a runner path of a lead frame is provided in a direction in which the lead frame and the runner are separated. The sealed product of the B type which separates the runner by the directional operation and has no regate hole converts the above-mentioned one-way operation into a swinging operation by swingably supporting the sealed product, and separates the runner. And A
The gate cut of the two types of sealed products of the type and the B type can be dealt with by exchanging some parts, and the equipment downtime at the time of type switching can be reduced.

[0013] In addition, there are two types of sealed products, namely, an A-type sealed product having a regate hole on the runner path of the lead frame and a B-type sealed product having no regate hole. A gate cutting device for performing a gate cut of a product, comprising: a common base; driving means for driving the common base in one direction in a perspective direction; and a driving means for driving a lead frame and a runner of an A-type sealed product. The first part group to be peeled off by the directional drive and the B-type sealed product are swingably supported, and the one-way drive of the driving means is converted into the swinging operation of the sealed product, thereby forming the lead frame and the runner. It is provided with a second parts group to be separated, and can be adapted to any type of sealed product only by exchanging the first parts group and the second parts group, and equipment downtime at the time of type switching Can be reduced

The first group of parts includes a product receiving plate installed on a common base, a ligating pin and a holding block installed on the driving means, and the second parts group is installed on the common base. A product receiving swing plate that swingably supports the runner support means and the sealed product around a predetermined position, and a work presser installed on the driving means are provided. The equipment downtime can be further reduced.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method and an apparatus for cutting a gate of a sealed product according to the present invention will be described below with reference to FIGS.

The gate cut device for a sealed product according to the present embodiment is provided with a regate hole 4 on the runner path of the lead frame 3.
The structure is such that the gate cut can be performed by simply exchanging some parts groups for two types of sealed products, that is, the A type sealed product 1 having the above and the B type sealed product 2 having no regate hole. Have been.

FIG. 1 shows a state in which a gate cut of an A-type sealed product 1 is performed, and includes a common base 11 and a common base 11.
A drive unit 12 for driving the movable block 13 in one direction of the near and far directions, and a first part for separating the lead frame 3 and the runner unit 5 of the sealed product 1 by one-way drive of the drive unit 12 Group 15 is set. This first
The parts group 15 includes a product receiving plate 17 provided with a relief having a shape similar to a runner shape provided on the common base 11 via a base plate 16, a ligating pin 18 provided on the movable block 13 of the driving means 12, and a floating member 18. The holding block 19 has a holding mechanism.

FIG. 2 shows a state in which a gate cut of the B-type sealed product 2 is performed. The B-type sealed product 2 is swingably supported on the common base 11 and the driving means 12 by driving means. A second parts group 20 for converting the one-way drive 12 into a swinging operation of the sealed product 2 and separating the lead frame 3 and the runner section 5 is set. The second part group 20 includes a runner support means 22 installed on the common base 11 via a base plate 21 and a product receiving swing plate 23 for swingably supporting the sealed product 2 about a predetermined position. It comprises a work holder 24 installed on the movable block 13 of the driving means 12.

The product receiving oscillating plate 23 has a relief having a shape similar to that of the runner portion 5, is swingably supported around a fulcrum A provided on a fulcrum block 25, and is vertically moved along a vertical guide rail 26. A moving roller 27 is mounted. The fulcrum block 25 is the base plate 2
1, the roller 27 is pulled by a spring 28 in a direction in which the roller 27 is engaged with the guide rail 26, whereby the fulcrum A and the center of the roller 27 are held in a horizontal position. I have. The position of the center B of the roller 27 is aligned with the end of the lead frame 3. Further, the runner supporting means 22 is arranged below the cull part 6, is operated in the vertical direction by the driving means 29, and is configured to abut on the lower surface of the cull part 6 at the raised position.

In the above configuration, the A-type sealed product 1
When the runner portion 5 is separated and removed from the lead frame 3 as shown in FIG. 1, the sealed product 1 is set on the product receiving plate 17 and the driving means 12 is operated to operate the regate pin 18 and the holding block 19. Is operated downward.
Then, first, the pressing block 19 presses the lead frame 3, and then the runner section 5 is pressed in the driving direction of the driving means 12 by the regate pin 18, so that the runner section 5 is pressed.
Is peeled off.

When the runner portion 5 is separated and removed from the lead frame 3 of the B-type sealed product 2, the sealed product 2 is set on the product receiving swing plate 23 as shown in FIG. In a state in which the cull portion 6 is supported from below by the driving means 29 of the runner supporting means 22, the driving means 12 is operated to move the work holder 24 in the downward direction, so that the workpiece holding rocker plate 23 is sealed. The lead frame 3 of the stopper 2 is clamped and fixed, and in this state, the work holder 24 is further moved downward. Then, the product receiving oscillating plate 23 is pushed downward, the roller 27 moves downward along the guide rail 26, and the fulcrum block 25 moves against the urging force of the spring 28 to raise the height of the fulcrum A. Is maintained constant, the product receiving swing plate 23 swings about the center B of the roller 27. Here, the roller 27
Is aligned with the end of the lead frame 3, so that the runner 5 is separated from the lead frame 3.

[0022]

According to the method for cutting the gate of a sealed product of the present invention, as is apparent from the above description, the A-type sealed product having a regate hole on the runner path of the lead frame is not a lead frame. The direction of peeling the runner 1
The sealed product of the B type which separates the runner by the directional operation and has no regate hole converts the above-mentioned one-way operation into a swinging operation by swingably supporting the sealed product, and separates the runner. Therefore, it is possible to cope with the gate cut of the two types of sealed products of the A type and the B type by exchanging some parts, and it is possible to reduce the equipment downtime at the time of type switching.

Further, according to the gate cut device for the sealed product, the common base, the driving means for driving the common base in one direction in the perspective direction, and the lead frame and the runner for the A type sealed product are driven. A first group of parts to be peeled off by one-way driving of the means, and a B-type sealed product which is swingably supported, and converts the one-way drive of the driving means into a swinging operation of the sealed product to lead frame. And the second part group that separates the runner, the switching can be easily performed by exchanging the first part group and the second part group, and the equipment downtime at the time of type switching is reduced. be able to.

Further, the first part group includes a product receiving plate installed on the common base, a ligating pin and a holding block installed on the driving means, and the second part group is installed on the common base. A product receiving swing plate for swingably supporting the runner supporting means and the sealed product around a predetermined position, and a work presser installed on the driving means, so that the structure can be easily exchanged, and when the type is switched, The equipment downtime can be further reduced.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing a state in which a gate cut of an A-type sealed product is performed in an embodiment of a gate cut device for a sealed product of the present invention.

FIG. 2 is a schematic front view showing a state where a gate cut is performed on a B-type sealed product in the embodiment.

FIG. 3 is a perspective view of an A-type sealed product.

FIG. 4 is a perspective view of a B-type sealed product.

FIG. 5 is a schematic front view of a gate cut device for a type A sealed product in a conventional example.

FIG. 6 is a schematic front view of a gate cut device for a B-type sealed product in a conventional example.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 A type sealed product 2 B type sealed product 3 Lead frame 4 Regate hole 5 Runner part 11 Common base 12 Drive means 15 First parts group 17 Product receiving plate 18 Regate pin 19 Holding block 20 Second parts group 22 Runner support means 23 Product receiving swing plate 24 Work holder

Claims (3)

[Claims] 1. A method for cutting two types of sealed products, an A-type sealed product having a regate hole on a runner path of a lead frame and a B-type sealed product without a regate hole, wherein the A type The sealed product of (1) separates the runner by one-way operation in the direction of separating the lead frame and the runner, and the B-type sealed product swings the one-way operation by swingably supporting the sealed product. A method for cutting a gate of a sealed product, wherein the runner is separated by converting the operation into an operation. 2. A gate cutting apparatus for performing gate cutting of two types of sealed products, an A-type sealed product having a regate hole on a runner path of a lead frame and a B-type sealed product having no regate hole. A first base for separating the lead frame and the runner of the A-type sealed product by one-direction driving of the common base, the driving means for driving the common base in one direction in the perspective direction, Parts group,
A second part group for swingably supporting the B-type sealed product, converting one-way driving of the driving means into a swinging operation of the sealed product, and separating the lead frame and the runner. A gate cut device for sealed products. 3. The first group of parts includes a product receiving plate installed on a common base, a ligate pin and a holding block installed on a driving unit, and the second group of parts includes:
A product receiving swing plate for swingably supporting a runner supporting means and a sealed product installed on a common base around a predetermined position, and a work presser installed on the driving means are provided. The gate cut device for a sealed product according to claim 2.