JP2011103406A - Resin sealing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a resin sealing device capable of performing stable transfer operation without using any air cylinder. <P>SOLUTION: The resin sealing device includes a track rail 20 disposed linearly at a position where a lead frame and a product can be transferred between a supply portion 3 and a molding portion and between the molding portion 4 and a discharge portion 5, a frame and tablet transfer common portion 21 which transfers the lead frame between the supply portion 3 and the molding portion 4, an unloader portion 22 which transfers the product between the molding portion 4 and the discharge portion 5, a first slider 24a which is mounted with the frame and tablet transfer common portion 21 and movable along the track rail 20, a second slider 24b which is mounted with the unloader portion 22 and movable along the track rail 20, a field magnet 26 which has an N pole and an S pole arrayed alternately along a longitudinal direction of the track rail 20, and first and second armatures 25a and 25b which are respectively mounted on the first and second sliders 24a and 24b and constitute a linear motor coupled with the field magnet 26. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a resin sealing device for resin-molding a molded product such as a lead frame or a substrate.

  Electronic components such as integrated circuits (ICs) cause dust to cause a short circuit or breakage with adjacent circuits, and are therefore manufactured in a clean room. The main part of the lead frame is a resin that is entirely covered with a cover. Resin sealing is performed fully automatically by the sealing device.

  As a conventional resin sealing device, for example, Patent Document 1 discloses a lead frame stock part as an insert stock part, a tablet stock part as a resin material stock part, two transfer molding machines, a product stock part, Further, a resin sealing device is disclosed in which a lead frame transport mechanism that is an insert transport mechanism, a tablet transport mechanism that is a resin material transport mechanism, a product transport mechanism, and a gate break mechanism are covered with a cover.

  In this resin sealing device, the product stock section, the lead frame transport mechanism, and the product transport mechanism share one common transport mechanism. The shared transport mechanism includes an XY moving mechanism and a pair of left and right hand mechanisms that move in the lateral direction and the front-rear direction by the XY moving mechanism. The XY movement mechanism includes a horizontal slide and a vertical slide that are driven by an air cylinder.

JP-A-7-241874 (paragraphs 0021 and 0035, FIG. 1)

  As described in Patent Document 1, an air cylinder is mainly used as a drive source for a common conveyance device of a conventional resin sealing device. This is because the air cylinder has a simple structure because compressed air may be supplied by a hose and can be controlled by turning on / off the electromagnetic valve. However, since the air cylinder uses a rubber packing between the cylinder and the piston, the operation varies depending on the deteriorated state of the rubber packing. In addition, since the operation changes when the pressure fluctuation occurs due to the bending of the hose that supplies the compressed air to the air cylinder, the operation becomes unstable.

  Accordingly, an object of the present invention is to provide a resin sealing device capable of performing a stable transport operation without using an air cylinder.

  The resin sealing device according to the present invention includes a supply unit that supplies a molded product, a molding unit that performs resin sealing of the molded product, and a discharge unit that discharges the molded product after resin sealing. It is a common transport device that transports molded products and molded products between a supply unit, a molding unit, and a discharge unit, and delivers the molded products and molded products between the supply unit, the molding unit, and the discharge unit. Pass the molded product between the molding rail and the discharge unit, the track rail arranged in a straight line at a possible position, the molded product transport unit that delivers the molded product between the supply unit and the molding unit A first slider on which a molded product conveyance unit and a molded product conveyance unit are mounted and movable along the track rail; and a second slider on which the molded product conveyance unit is mounted and movable along the track rail; A field in which N and S poles are alternately arranged along the longitudinal direction of the track rail; Is intended to include common transfer device equipped with mounted respectively on first and second slider and the first and second armatures are together constitute a linear motor and field.

  According to the present invention, the first and second armatures constituting the linear motor coupled with the magnetic field in which the N poles and the S poles are alternately arranged along the longitudinal direction of the track rail are excited, respectively. The molded product conveyance unit and the molded product conveyance unit mounted on the first and second sliders can be propelled along the track rail and stopped at predetermined positions, respectively, between the supply unit and the molding unit. It is possible to deliver the molded product and deliver the molded product between the molding unit and the discharge unit.

  Here, it is desirable that the molded product transport unit and the molded product transport unit are suspended below the track rail. Since the common conveyance device that conveys the molded product and the molded product between the supply unit, the molding unit, and the discharge unit needs to cover most of the inside of the resin sealing device as a moving range, the straight line according to the present invention Although it is difficult to secure the space for arranging the track rails arranged in a shape, the track rails are formed by suspending the molded product transport unit and the molded product transport unit below the track rails. It becomes possible to arrange | position above a resin sealing device.

  In addition, the resin sealing device of the present invention provides the delivery of the molded product between the supply unit and the molding unit of the molded product conveyance unit, and between the molding unit and the discharge unit of the molded product conveyance unit. It is desirable to have a servo motor as a drive source for delivering the molded product. Accordingly, it is possible to perform all of the movement of the molded product conveyance unit and the molded product conveyance unit and the delivery of the molded product and the molded product by electric power.

(1) The molded article is arranged between the supply section, the molding section, and the track rail linearly arranged at a position where the molded article and the molded article can be delivered between the supply section, the molding section, and the discharge section. A first product slider mounted with a molded product conveyance unit for delivery, a molded product conveyance unit for delivering a molded product between the molding unit and the discharge unit, and a molded product conveyance unit, which is movable along the track rail. A second slider that is mounted with a molded product conveying unit and is movable along the track rail, a field in which N poles and S poles are alternately arranged along the longitudinal direction of the track rail, By providing the first and second armatures mounted on the second slider and combined with the field to form the linear motor, the first and second armatures can be excited. The molded product conveyor and molded product conveyor Promoted along the Le, it is possible to securely stopped at a predetermined position, it is possible to perform a stable conveyance operation.

(2) Since the molded product transport unit and the molded product transport unit are suspended below the track rail, it is possible to easily secure the space for arranging the track rail above the resin sealing device. It becomes possible. In addition, since there is no track rail below the molded product transport section and the molded product transport section, it is possible to easily transfer the molded product and molded product between the supply section, the molded section, and the discharge section. In addition, the degree of freedom of arrangement of the supply unit, the molding unit and the discharge unit is increased.

(3) A drive source for delivering the molded product between the supply unit and the molding unit of the molded product conveyance unit and delivering the molded product between the molding unit and the discharge unit of the molded product conveyance unit As a result, it is possible to use a servo motor to move all of the molded product transport unit and molded product transport unit and deliver the molded product and molded product with electric power. A stop device can be realized.

It is a schematic plane perspective view which shows the resin sealing apparatus in embodiment of this invention. It is a schematic front perspective view of the resin sealing device of FIG. FIG. 2 is a schematic rear perspective view of the resin sealing device of FIG. 1.

  1 is a schematic plan perspective view showing a resin sealing device according to an embodiment of the present invention, FIG. 2 is a schematic front perspective view of the resin sealing device in FIG. 1, and FIG. 3 is a schematic rear view of the resin sealing device in FIG. FIG.

  1 to 3, a resin sealing device 1 according to an embodiment of the present invention is roughly divided into a cover 2 that covers the entire device, and supplies a lead frame (not shown) as a product to be molded. A molding part 4 that performs resin sealing of the lead frame with the part 3, two molds 4a and 4b, a discharge part 5 that discharges the lead frame after resin sealing (hereinafter referred to as "product"), A common transport device 6 that transports the lead frame and the product among the supply unit 3, the molding unit 4, and the discharge unit 5 is provided.

  The supply unit 3 sets an in-magazine 10 that holds a plurality of lead frames, supplies an in-magazine unit 11 that supplies the lead frames in units of magazines, and a frame pusher unit 12 that pushes out the lead frames one by one from the in-magazine 10. And the input turntable portion 13 having lead frame holding portions 13b and 13c for holding two lead frames symmetrically with the rotating shaft 13a, and the lead frame pushed out by the frame pusher portion 12 to the input turntable portion 13. A lead frame lead-in portion 14 to be pulled in;

  The input turntable portion 13 rotates around the rotation shaft 13a in order to draw the lead frame into the lead frame holding portions 13b and 13c by the lead frame drawing portion 14. The supply unit 3 includes a tablet supply unit 15 that supplies a sealing resin, a tablet distribution unit 16 that distributes the sealing resin supplied by the tablet supply unit 15, and a sealing resin distributed by the tablet distribution unit 16 And a tablet delivery unit 17 that delivers a frame and tablet conveyance common unit 21 as a molded product conveyance unit described later.

  The discharge unit 5 receives and holds the product delivered from the molding unit 4, removes an excess portion, and delivers the product to the output rail unit 31, and is delivered from the lower gate break unit 30. It has the output rail part 31 which conveys a product to the product storage part 32 mentioned later, and the product storage part 32 which stores the product conveyed by the output rail part 31. FIG.

  The common transport device 6 includes a track rail 20 linearly arranged at a position where the lead frame and the product can be delivered between the supply unit 3, the molding unit 4, and the discharge unit 5, the supply unit 3, and the molding unit 4. A frame & tablet conveyance common unit 21 as a molded product conveyance unit that delivers a lead frame between, an unloader unit 22 as a molded product conveyance unit that delivers a product between the molding unit 4 and the discharge unit 5; And a cleaner section 23 for cleaning the molds 4a and 4b of the molding section 4.

  The frame & tablet conveyance common unit 21 receives the sealing resin from the tablet delivery unit 17 and sets it on the lead frame held by the input turntable unit 13, and the lead frame on which the sealing resin is set is input to the input turntable unit 13. It conveys from the table part 13 to metal mold | die 4a, 4b of the shaping | molding part 4. FIG. The unloader unit 22 receives products from the molds 4 a and 4 b of the molding unit 4 and conveys them to the lower gate break unit 30 of the discharge unit 5.

  Further, the common transport device 6 is equipped with a frame & tablet transport common section 21, a first slider 24 a that is movable along the track rail 20, an unloader section 22, and a cleaner section 23. And a second slider 24b that is movable along the longitudinal direction of the track rail 20, a field 26 in which N poles and S poles are alternately arranged, and first and second sliders 24a and 24b. And a first armature 25a and a second armature 25b which, together with the field magnet 26, constitute a linear motor.

  The track rail 20 has a channel (concave groove) shape, and is fixed above the resin sealing device 1 so that the opening side of the concave groove faces downward. The first and second sliders 24 a and 24 b can reciprocate in the longitudinal direction of the track rail 20 (the left-right direction in FIGS. 1 and 2) in the groove of the track rail 20. The first and second sliders 24 a and 24 b individually excite the first and second armatures 25 a and 25 b, respectively, so that the N and S poles are independently along the longitudinal direction of the track rail 20. Can be propelled along the track rail 20 by the principle of a linear motor in combination with alternating magnetic fields and stopped at a predetermined position.

  Since the frame & tablet conveyance common part 21 is fixed so as to be suspended below the first slider 24a, it reciprocates between the supply part 3 and the molding part 4 by the excitation of the armature 25a. The lead frame can be transferred between the supply unit 3 and the molding unit 4. Further, since the unloader portion 22 and the cleaner portion 23 are fixed so as to be suspended below the second slider 24b, the unloader portion 22 and the cleaner portion 23 reciprocate between the molding portion 4 and the discharge portion 5 by the excitation of the armature 25b. The product can be delivered between the molding unit 4 and the discharge unit 5. In addition, although not shown in figure, the delivery of the lead frame between the supply part 3 and the shaping | molding part 4 of the frame & tablet conveyance common part 21, and the product between the shaping | molding part 4 and the discharge | emission part 5 of the unloader part 22 A servo motor is used as a drive source for delivering the signal.

Next, the operation of the resin sealing device 1 having the above configuration will be described.
First, the magazine 10 set in the in-magazine portion 11 is moved to the lead frame distribution position (position of the magazine 10 shown in FIG. 1), and the lead frame is moved from the magazine 10 toward the lead frame drawing portion 14 by the frame pusher portion 12. Pushed out. Then, the lead frame is carried to one lead frame holding part 13 b of the input turntable part 13 by the lead frame drawing part 14. Further, the input turntable portion 13 rotates 180 ° in the direction of arrow A around the rotation shaft 13a, and holds the lead frame on the other lead frame holding portion 13c by the same procedure.

  On the other hand, the sealing resin supplied to the tablet supply unit 15 is supplied to the tablet distribution unit 16. The sealing resin supplied to the tablet distribution unit 16 flows toward the tablet delivery unit 17 and is aligned, and then set to the tablet delivery unit 17. Then, the first armature 25a is excited, the frame & tablet conveyance common part 21 moves to the supply part 3 side together with the slider 24a, receives the sealing resin set in the tablet delivery part 17, and receives the input turntable part 13. Set on the lead frame held in

  Next, a current in the reverse direction is applied to the first armature 25a to be excited, and the frame & tablet conveyance common part 21 moves from the supply part 3 to a predetermined position of the molding part 4 together with the slider 24a. The lead frame on which the sealing resin on the part 13 is set is conveyed to one mold 4a or 4b of the molding part 4. The lead frame is molded (resin-sealed) by the mold 4a or the mold 4b. In addition, the resin sealing apparatus 1 in this embodiment is equipped with two metal mold | dies 4a and 4b in parallel, and it is possible to perform resin sealing by using these metal mold | dies 4a and 4b alternately. .

  After the molding is completed, the product is taken out from the mold 4a or the mold 4b by the unloader unit and transferred to the lower gate break unit 30 of the discharge unit 5 by the unloader unit 22. Further, the mold 4 a or the mold 4 b after the product is taken out is cleaned by the cleaner unit 23. At this time, the unloader part 22 and the cleaner part 23 reciprocate between the molding part 4 and the discharge part 5 together with the slider 24b when the second armature 25b is excited.

  Then, the lower gate break portion 30 to which the product has been delivered is removed from the excess portion, is carried from the lower gate break portion 30 by the output rail portion 31, and is stored in the product storage portion 32.

  As described above, in the resin sealing device 1 according to the present embodiment, the frame & tablet conveyance common unit 21 that delivers the lead frame between the supply unit 3 and the molding unit 4, the molding unit 4, and the discharge unit 5. The unloader part 22 for delivering the product between the linear parts along the track rail 20 arranged linearly at a position where the lead frame and the product can be delivered between the supply part 3, the molding part 4 and the discharge part 5. Since it can be propelled by a motor and reliably stopped at a predetermined position, a stable transport operation can be performed.

  Moreover, in this resin sealing device 1, since the frame & tablet conveyance common part 21 and the unloader part 22 are suspended below the track rail 20, the arrangement space of the track rail 20 is reduced in the resin sealing device 1. It can be easily secured upward. In addition, since there is no track rail 20 below the frame & tablet conveyance common part 21 and the unloader part 22, the lead frame and the product can be easily transferred between the supply part 3, the molding part 4 and the discharge part 5. The degree of freedom of arrangement of the supply unit 3, the molding unit 4, and the discharge unit 5 is increased.

  In addition, the resin sealing device 1 is configured to transfer the lead frame between the supply unit 3 and the molding unit 4 of the frame & tablet conveyance common unit 21, and between the molding unit 4 and the discharge unit 5 of the unloader unit 22. Servo motor is used as a drive source for delivering products between them, and the movement of the frame & tablet conveyance common part 21 and unloader part 22 and the delivery of lead frames and products are all performed by electric power. The resin sealing device 1 is realized.

  The resin sealing device of the present invention is useful as a device for manufacturing a product such as a semiconductor device by sealing a molded product such as a lead frame or a substrate.

DESCRIPTION OF SYMBOLS 1 Resin sealing apparatus 2 Cover 3 Supply part 4 Molding part 4a, 4b Mold 5 Discharge part 10 In magazine 11 In magazine part 12 Frame pusher part 13 Input turntable part 14 Lead frame drawing-in part 15 Tablet supply part 16 Tablet distribution part 17 Tablet delivery section 20 Track rail 21 Frame & tablet conveyance common section 22 Unloader section 23 Cleaner section 24a, 24b Slider 25a, 25b Armature 26 Field 30 Lower gate break section 31 Output rail section 32 Product storage section

Claims (3)

In a resin sealing device having a supply unit that supplies a molded product, a molding unit that performs resin sealing of the molded product, and a discharge unit that discharges the molded product after resin sealing,
A common transport device for transporting the molded product and the molded product between the supply unit, the molding unit, and the discharge unit;
A track rail linearly arranged at a position where the molded product and the molded product can be delivered between the supply unit, the molding unit, and the discharge unit,
A molded product conveying unit that delivers the molded product between the supply unit and the molded unit;
A molded product transport unit that delivers the molded product between the molded unit and the discharge unit;
A first slider that is mounted with the molded article conveying section and is movable along the track rail;
A second slider on which the molded product transport unit is mounted and movable along the track rail;
A field in which N poles and S poles are alternately arranged along the longitudinal direction of the track rail;
A resin sealing device including a common transport device that is mounted on each of the first and second sliders and includes first and second armatures that together with the field constitute a linear motor.   The resin sealing device according to claim 1, wherein the molded product transport unit and the molded product transport unit are suspended below the track rail.   Delivery of the molded product between the supply unit and molding unit of the molded product transport unit, and delivery of the molded product between the molding unit and discharge unit of the molded product transport unit The resin sealing device according to claim 1, further comprising a servo motor as a driving source to be performed.

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