JPH06135546A - Jumping preventive mechanism for integrated circuit package - Google Patents

Abstract

PURPOSE:To provide a jumping preventive mechanism for an intergated circuit package for preventing an integrated circuit during conveyance in a sealing machine from joumping out of a tube magazine. CONSTITUTION:In an operating part 2 in a sealing machine, an air blow 1 is set up in a nearby spot in front of the outward route stopping position of an unloader 4 in opposition to the traveling direction of this unloader 4. In succession, the air blow 1 blows out air in a while from a driving start to a conveying end for the outward route conveyance of the unloader 4, thereby preventing an integrated circuit 18 from jumping out of a tube magazine 11 in time of the unloader 4 being stopped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an IC package pop-out prevention mechanism for preventing the IC package stored in a conveyed tube magazine from popping out in a processing apparatus having a horizontal transfer mechanism.

[0002]

2. Description of the Related Art FIG. 4 is a schematic view of a part of a semiconductor processing process. As shown in the figure, the IC package (hereinafter referred to as IC) 18 in the semiconductor assembling process is transported in the state of the IC group I fixed to the frame 17 until it is processed by the lead processing machine, and after processing, as shown in II. A state in which it can be mounted on a board by being divided into individual ICs 18 (hereinafter called individual pieces)
And sent to the inspection process for selection.

The IC 18 is used to convey the IC 18 which has become an individual piece.
A tube magazine 11 is used to prevent damage to the. 5A and 5B show an example of the tube magazine 11. FIG. 5A is a plan view, FIG. 5B is a sectional view taken along line bb in FIG. 5A, and FIG. 5C is a perspective view. As shown, the tube magazine 11 has the shape of a C-shaped channel, and a stopper 11a for preventing slipping is provided at one end of the inner bottom surface.
Is internally provided, and the other end portion 11b on the opposite side has a structure in which individual pieces of the IC 18 can be taken in and out. The tube magazine 11 is generally made of vinyl chloride resin or metal, and its shape differs depending on the product type.

As an example of the process of using this tube magazine, there is an apparatus for imprinting an IC (hereinafter referred to as a marking machine), and in this apparatus, a tube magazine 11 is used for carrying the IC.

As a method of transporting the tube magazine 11, some other methods are adopted. Figure 1
Belt conveyor 1 driven by motor 13 as shown in 0
There is a method of transporting the tube magazine 11 from the supply section to the delivery section in the horizontal direction by means of No. 4. Further, as shown in FIG. 11, the tube magazine 1 is mounted on a supporter 16 fixed to a piston 15a that expands and contracts by a cylinder 15.
There is also a system in which 1 is conveyed horizontally from the supply unit to the delivery unit. In both cases, the supply section and the delivery section must have the same height. However, in the stamping machine, since the heights of the two are different as apparent from FIG. 6, a method of transporting the tube magazine 11 by a chuck method with a lateral movement mechanism interposed therebetween is adopted.

FIG. 6 is a block diagram of the marking machine. This device is roughly classified into a magazine supply section A equipped with a loader lifter 3.
, A magazine storage section B having an unloader 4, a delivery section C having a lifter 5 and a marking section D. The portion surrounded by a dotted line is an operation unit E that conveys the tube magazine 11 supplied from the loader lifter 3 to the lifter 5.
The tube magazine 11 conveyed to the lifter 5 by the operation unit E is sent to the marking unit D.

FIG. 7 shows the operating section E in more detail.
Is. That is, the loader lifter 3 is moved up to the position of the magazine storage section B by driving the cylinder 3a while the tube magazine 11 supplied from the magazine supply section A is placed. The unloader 4 is waiting at this portion of B, and the chuck 4a of the unloader 4 is closed to receive the tube magazine 11, and the loader lifter 3 which has finished the transfer is lowered to prepare for the next lift.

The unloader 4 is supported by a drive shaft 6 and a connecting shaft 7, and horizontally reciprocates with bearings 8a and 8b of both shafts 6 and 7 as a moving region. The drive shaft 6 is rotated by a motor 9 as a drive source via a reduction mechanism incorporated in the bearing 8a,
The unloader 4 is reciprocated (the principle of movement is not shown).
One connecting shaft 7 is connected to the cylinder 10, and the cylinder 1
The mechanism for opening and closing the chuck 4a via the connecting shaft 7 by driving 0. An arrow F in the drawing indicates a forward path (progress), and an R indicates a return path (reverse).

Therefore, the unloader 4, which has received the tube magazine 11 from the loader lifter 3, laterally moves to the delivery section C on the opposite side while sandwiching the tube magazine 11 in the lower part.

In the delivery section C, the lifter 5 is driven by the cylinder 5a to rise and stands by, and the chuck 5b which is opened and closed by a mechanism (not shown) of the lifter 5 receives and clamps the tube magazine 11 from the unloader 4. The unloader 4, which has released the chuck 4a and finished transferring and receiving the tube magazine 11, retreats again to prepare for the next conveyance. Then, the lifter 5 that has received the tube magazine 11 descends as it is, sends the tube magazine 11 to the marking portion D, raises it again, and prepares for the next transfer. In this way, each mechanism of the operation unit E repeats its operation in a timely manner by the control device (not shown).

As described above, the tube magazine 11 is conveyed through the stamping machine. When the unloader 4 moves the tube magazine 11 horizontally to the delivery section and stops, the inertia caused by the movement is generated. Due to the action, the trouble that the IC 18 in the tube magazine jumps out and falls as shown in FIG. 8 or FIG. FIG. 8 shows a situation in which the IC 18 has popped out of the tube magazine 11 and stopped, and FIG. 9 shows a situation in which the IC 18 has completely popped out and begins to fall. For this reason, a measure has been taken in which the rotation speed of the drive source motor 9 of the drive shaft 6 of the unloader 4 is delayed to control the transport speed of the unloader 4 to the extent that the IC does not fly out.

[0012]

However, in the method of preventing the tube magazine from popping out after the horizontal transfer of the tube magazine by the unloader in the stamping machine having the above-mentioned structure, the other moving parts wait in tandem in order to suppress the transfer speed of the unloader. Therefore, there is a problem that wasteful time is generated, the efficiency is lowered, and the processing capacity is lowered. Therefore, an object of the present invention is to provide an IC package pop-out prevention mechanism for preventing such troubles and improving efficiency.

[0013]

SUMMARY OF THE INVENTION In order to eliminate the above-mentioned problems in the prior art, the present invention stores in a tube magazine immediately in front of the stop position of the unloader, facing the conveying direction of the tube magazine. An inertia blocking means such as an air blow is installed as a means for preventing the IC from popping out, and air is ejected from the start of conveyance by the unloader until the transfer of the tube magazine to the lifter is completed to prevent the IC from popping out.

[0014]

According to the present invention, every time the tube magazine is transferred from the unloader to the lifter, the transfer of the unloader is started and the air blow is actuated to start the ejection of air to exert a resistance by an appropriate wind pressure. Therefore, even if the unloader is transported and braked, the inertia generated in the IC can be canceled. Therefore, during the period from the start of the transport of the unloader to the completion of the transfer, this is performed each time, and the problem of jumping out and falling is eliminated.

[0015]

EXAMPLES Next, examples of the present invention will be described.

FIG. 1 is a schematic view of a main part of an embodiment of the present invention, and FIG. 2 is an enlarged view of the main part. The tube magazine transport mechanism is the same as that of the prior art and the supply part is the same. Is transported to the delivery section. Therefore, common parts are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in the figure, the feature of this embodiment is the adoption of the air blow 1. As described above, the transport mechanism of this embodiment is exactly the same as the conventional one, and the detailed description of the operation of each part has been described in the conventional art, and therefore will be omitted. As shown in the figure, the air blow 1 which is the point of this embodiment is internally provided on the front wall surface of the unloader 4 at the forward end of the transfer section. The mounting position is the same as that of the tube magazine 11 in which the ejection port is transported.

When the unloader 4 starts to be driven, the air blow 1 starts to eject air by the operation of a control mechanism and a solenoid valve (not shown), and maintains that state. Until the tube magazine 11 is conveyed from the position indicated by the broken line by the unloader 4 and arrives at the delivery section, the I in the tube magazine 11 is
C18 is constantly under wind pressure, but tube magazine 1
Due to the frictional resistance of the contact surface due to the weight of the IC 18 in the IC 1, the IC 18 is transported without being pushed back. When the unloader 4 is braked and stopped at the delivery section, the tube magazine 11 held by the unloader 4 is stopped.
Due to the action of inertia that has already occurred in the IC 18 itself, which is just placed inside, the force of inertia that tends to fly over the frictional force of the IC is also canceled by the wind pressure of the air blow 1. In other words, the inertia is always canceled during transportation. Therefore, the IC 18 will not jump out of the tube magazine even by sudden braking. Then, when the unloader 4 arrives at the delivery section, the drive source of the unloader 4 is stopped, while the electromagnetic valve of the air blow 1 is also closed to stop the ejection of air. This operation is repeated in a timely manner according to the series of operations of each unit.

Although the embodiment of the present invention has been described above, the present invention is designed to receive the inertia applied to the IC 18 to prevent the IC 18 from jumping out when the transfer portion of the unloader 4 is stopped, and is limited to air blow. However, various other effective methods are possible. For example, the modification shown in FIG. 3 is one of them. Although the same figure is a perspective view of the main part, an elastic material 12a is attached to the tip of the coil spring 12 as shown. This may simply be a rod-shaped elastic material or an inelastic rod body. The tube magazine 11 conveyed to the delivery section is lowered by a lift next time, so that even if the coil spring 12 and the tip portion 12a are projected into the tube magazine 11, the tube magazine 1
The tube magazine 11 can be moved to the lowering step without contacting each other due to the notch groove on the upper part of 1. Various methods other than this can be adopted, but measures for preventing the IC 18 from popping out at this portion are all included in the scope of the present invention.

[0020]

According to the present invention, air is ejected toward the IC from the air blow installed in the delivery section while the tube magazine is being conveyed by the unloader. Therefore, even if the unloader is stopped, the IC will be ejected by the inertia of the tube. It is reliably prevented from jumping out of the magazine. Therefore, it is not necessary to reduce the transport speed of the unloader, which was used as a preventive measure in the conventional technology, and the unnecessary waiting time of other parts is also eliminated, resulting in efficient operation. Done. Therefore, it is naturally possible to improve the efficiency in all the production processes including this device, and it is expected that the quality control and the productivity are improved.

[Brief description of drawings]

FIG. 1 is a schematic view of a main part of the present invention.

FIG. 2 is an enlarged view of a main part of the present invention.

FIG. 3 is a schematic perspective view of a main part of a modified example of the present invention.

FIG. 4 is a schematic view of a part of a semiconductor processing process.

FIG. 5 is a diagram showing an example of a tube magazine.

FIG. 6 is a block diagram of a marking machine.

FIG. 7 is a detailed view of a marking machine operation unit.

FIG. 8 is a diagram showing how an IC is dropped.

FIG. 9 is a diagram showing a situation in which an IC has popped out and stopped.

FIG. 10 is an explanatory diagram of a transportation method using a belt conveyor.

FIG. 11 is an explanatory diagram of a transportation method using a piston.

[Explanation of symbols]

 1 Air blow 2 Operating part 3 Loader lifter 4 Unloader 5 Lifter 11 Tube magazine

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location H05K 13/02 D 8509-4E

Claims (1)

[Claims] 1. A processing apparatus comprising a transfer mechanism that supports a tube magazine containing a plurality of IC packages and horizontally reciprocates in a predetermined area, and is transferred to a position immediately before a stop position of the transfer mechanism. A pop-out preventing mechanism for an IC package, characterized by comprising an inertia blocking means that faces the advancing direction of the tube magazine and prevents the IC package stored in the tube magazine from popping out.