JP2591996B2 - Method and apparatus for aligning front / back / front / back direction of lead frame in electronic component manufacturing process - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION << Industrial application >> The present invention uniformly aligns a lead frame in a process of manufacturing an electronic component such as an integrated circuit from a front-back / front-back random orientation to a front-front orientation. The present invention relates to a method and an apparatus which can shorten a tact time and increase a production speed.

<< Background of the Invention >> At the end of the process of manufacturing an electronic component such as an integrated circuit, there are steps shown in FIG. Among them, molding process A
After the completion of the process, the lead frame R is in the shape shown in FIGS. 15 and 16 until the trim forming D step.

In the molding step A, the package c of the semiconductor element b is resin-molded at the intermediate portion in the width direction of the lead frame main body a to form the lead frame R.

Since the lead frame R is knocked out in the molding process A and has a random posture, it is necessary to unify the lead frame R into a front-facing posture through the alignment process E before entering the deflanching process B. There is. The alignment step E is also required between the soldering step C and the trim forming step D.

<< Conventional Technology >> Conventionally, the work of unifying and aligning the lead frame R from a front-to-back and front-to-back posture to a front-to-front posture has conventionally been performed manually.

However, it is conceivable to mechanize and liberalize the work due to increasing demand, shortage of labor, and rising labor costs.

<< Prior Proposal Example >> Therefore, prior to the present invention, the present inventor proposed a method of aligning the front and back and front and rear directions of the lead frame shown in FIG.

The previously proposed method includes a front / back / front / rear direction detection step 100, a front operation step 101, and a front operation step 102.

In the front / back / front / rear direction detection process 100, the lead frame R in the electronic component manufacturing process is moved from a carry-in port (not shown) to a predetermined detection position.
The lead frame R is conveyed to the horizontal and vertical detection attitude, and the front / back / front / rear direction detection device 104 detects which of the four combinations of front / back / front / rear the lead frame R is oriented.

In the front operation step 101, the lead frame R is transferred from the detection position 103 to the front operation position 105, and then, based on the detection signals of the front / back / front / rear detection device 104, the front sf, the front sr, ( Hereinafter, s for front, u for back, f for front, and r for back) are left as they are, and the lead frame R of back front uf and back back ur is set by the front-rear operation unit 106 in the front-rear direction axis. By making a half turn around the center 107 to make the front side sf and the front side sr, the supporting means 108 supports the front.

In the forward operation means 102, based on the detection signal of the front / back / front / rear direction detection device 104, the front / back direction sf is left as it is, and for the front / back direction sr, the support means 108 is turned by the turning operation means 109 to the front / back direction axis 110. Turn sf around 1/2 by turning it around 1/2.

As a result, all the lead frames R are aligned in the front direction sf.

<< Problem to be Solved by the Invention >> In the above-mentioned prior proposal example, there is a problem that the operation time of the lead frame R toward the front side may be lengthened for the following reason, and the production speed is reduced.

As shown in FIG. 18, in the front / back / front / rear direction detection process 100, the orientation of the lead frame R is set to front / back sf / back / front
There are 44 ways: uf, front facing sr, back facing ur.

When the lead frame R is facing sf, the operation process for the front
Neither the table rotation operation in 101 nor the front rotation operation in the front operation step 102 is necessary, but it is necessary to supply from a series of previous steps and supply to a series of subsequent steps. In order to match, it is waited on the spot so as to conform to a predetermined tact time.

In the case of the front-facing uf or the front-facing sr, a 1/2 rotation operation is sufficient for only the front or only the front. The time required for this 1/2 rotation operation is well adapted to the predetermined tact time for the supply from each of the preceding series of steps and the supply to the subsequent series of steps.

In the case of a rear-facing ur, a rotation of 1/2 rotation for the front and 1/2 rotation for the front requires a total of one rotation. The time required for the operation for a total of one rotation is twice as long as the operation for the half rotation described above, so that the operation cannot be completed within the predetermined tact time, and the tact time is reduced by half. The rotation time is prolonged, which slows down the production speed.

SUMMARY OF THE INVENTION An object of the present invention is to increase the production speed while keeping the tact time short by eliminating the prolonged rotation operation time for the front and front sides of the lead frame.

<< Means for Solving the Problems >> (First Invention) The first invention has, for example, as shown in FIG. 1, an orientation detection step 1, a front operation step 2, and a front operation step 3, In the direction detecting step 1, the lead frame R in the electronic component manufacturing process is loaded into the predetermined detecting position 4 at a predetermined detecting position from a predetermined loading port, and the direction of the lead frame R is detected by the direction detecting device 16, and the table is detected. In the facing operation process 2, the lead frame R is transferred from the detection position 4 to the front facing operation position 7, and the lead frame R is moved by the front facing operation device 17 based on the detection signal of the orientation detection device 16 in the left-right lateral axis. 9
Is rotated in either the forward or reverse direction with respect to the center of the lead frame R, and the front of the lead frame R is turned upward from the front or the rear without turning the lead frame R downward. In the forward operation step 3, the support means 10 of the forward operation apparatus 18 is rotated by the turning operation means 11 based on the detection signal of the direction detection apparatus 16 in either forward or reverse directions with respect to the front and rear direction axis 12. The lead frame R supported by the support means 10 is rotated by
It is characterized by turning from sideways to forward without turning backwards.

(Second Invention) The second invention is, for example, as shown in FIG. 1 to FIG.
Orientation detection device 16, front operation device 17, and front operation device
The direction detecting device 16 carries the lead frame R in the electronic component manufacturing process from a predetermined entrance 31 into a predetermined detecting position 4 in a predetermined detecting posture, and detects the direction of the lead frame R in the direction detecting means 6. The front-facing operation device 17 transfers the lead frame R from the detection position 4 to the front-facing operation position 5 and, based on the detection signal of the orientation detection device 16, directs the lead frame R to the front. Operating device 17
Rotate the lead frame R in either the forward or reverse direction about the horizontal axis 9 in the left and right directions, and turn the front of the lead frame R upward from the front or the rear without turning the front downward. And the support means 10 is configured to support the front operation device 18 based on a detection signal of the direction detection device 16 so that the support device 10
The lead frame R supported by the support means 10 can be turned from sideways to forward without turning backward by rotating the leadframe R in either the forward or reverse direction about the front-back axis 12 at 11. It is characterized by having done.

(Third invention) In the third invention, in the second invention, for example, as shown in FIG. 2, the carry-in device 15, the direction detection device 16, the front operation device 17, the front operation device 18, and the unload device 19 A direction detection device 16, a front operation device 17, and a front operation device 18.
Are arranged along the direction of the description along one direction,
The carrying-in device 15 carries the lead frame R into the direction detecting device 16 one by one in a predetermined posture, and is continuous with the direction detecting device 16 and crosses the one direction. The unloading device 19 is provided so as to unload the lead frames R one by one from the forward operating device 18 and is continuous with the forward operating device 18 and intersects in the one direction. It is provided in such a state that it is oriented in the same direction as the carry-in device 15.

(Fourth invention) The fourth invention is the invention according to the second invention or the third invention,
For example, as shown in FIG.
The fall guide means 54, the front operation means 8 and the support means 10 are arranged in order from top to bottom.
Is configured to guide the lead frame R to fall in a substantially vertical landscape orientation, and the front-side operation means 8 converts the lead frame R guided by the fall guide means 54 to the front-side operation inclination switching guide. The fall guide is switched from the substantially vertical horizontal position to the oblique horizontal position in which the surface of the lead frame R is obliquely upward by the tilt guide direction switching operation of the tool 56, and then the lead frame R is dropped on the support means 10 to be dropped. The tilt switching guide 56 is tilted to a tilting actuator 57 so that the tilt switching guide 56 is tilted to a substantially horizontal landscape orientation in which the surface faces upward.
The support means 10 includes a stopper portion 58 for receiving the leading edge 39 of the lead frame R falling in the oblique and horizontal posture, and a lead portion R. And an upwardly-facing horizontally long support surface 59 for supporting the lead frame in a substantially horizontal horizontally long posture in which the lead frame surface faces upward.

(Fifth invention) In the fifth invention, in the fourth invention, for example, as shown in FIG. 3, the front operation device 18 is provided with the support means.
10, a turning actuator 61, a lifting / lowering actuator 62, and an unloading transmission wheel 63, and the supporting means 10 is constituted by supporting a rotatable conveying means 66 on a supporting frame 64 so as to freely rotate. Is the support means
In order to switch and drive the upper and lower postures 67 and 68 for the lead frame receiving, the upper and lower postures 68 are pivotally connected to the support means 10 so as to be able to rotate and drive. In order to switch and drive between the upper position front-rearward posture 68 and the lower position front-rearward posture 70 for unloading the lead frame,
Linked to the support means 10 so as to be able to drive up and down, and the transmission wheel for unloading
63, in a state in which the supporting means 10 is located in the lower position front-rear posture 70 for lead frame unloading, interlockingly connects the rotatable conveying means 66 of the supporting means 10 to the rotatable discharging means 72 of the unloading device 19. As described above, the rotating transport means 66 and the rotating unloading means
It was provided to be able to transmit between 72.

<< Operation >> A. Operation of the first and second inventions As shown in FIG. 1, the operation for the front only requires approximately 1/4 rotation, and the operation for the front only requires approximately 1/4 rotation. It only requires a total of approximately 1/2 turn of movement to move forward.

B. Operation of the Fourth Invention As shown in FIGS. 2 and 3, the lead frame R supplied from the orientation detection device 16 to the front operation device 17 is used.
Falls down while being guided by the drop guide means 54 in a landscape orientation along the vertical plane, slides on the inclination switching guide 56, inclines, is received by the stopper portion 58 of the support means 10, and on the upwardly-oriented landscape support surface 59. And is placed face up.

C. Operation of the Fifth Invention After the lead frame R is placed on the upwardly-facing horizontally long support surface 59, the support frame 64 is horizontally rotated approximately 1/4 by the turning actuator 61, and then the lifting actuator 62 Can be lowered. Then, the rotatable transport means 66 comes into contact with the unloading transmission wheel 63 and starts rotating, and unloads the lead frame R. This is received by the rotating means 72 and carried out to the next step.

<< Effects of the Invention >> The first and second inventions have the following effect (a).

I. According to the present invention, the total amount of front and rear rotation operation of the lead frame is approximately 1/2 rotation. Waiting, and in other cases, eliminating the problem of extending the tact time by the length of one revolution in total, and keeping the tact time short, speeding up production speed and increasing productivity it can.

The third invention has the following effect B in addition to the above effect A.

B. Since the carry-in device and the carry-out device are arranged in parallel, the entire device can be reduced in size as compared with the case where they are arranged in series or at right angles.

The fourth invention has the following effects C and D in addition to the effect A.

C. Since the lead frame is turned upside down by dropping, it is not necessary to perform a series of complicated handling operations such as positioning stop, grasping, turning over, and releasing compared to the case of turning it up by the handling mechanism. The operation time for the operation is short, and the work efficiency can be further improved.

D. The front-facing operation device is simple enough that the movable portion switches the inclination direction of the inclination switching guide, and the structure can be much simplified as compared with the case of performing the above-described series of complicated handling operations. it can.

The fifth invention has the following effects (e) and (f) in addition to the effects (i) and (d).

E. Since the rotating transport means is completely separated from the unloading transmission wheel during the rotation operation of the support frame and the transmission is interrupted,
It is possible to surely prevent the lead frame from being erroneously carried out due to the malfunction of the rotary transfer means during the rotation of the support frame.

F. Since the rotary transport means is driven using the drive device of the rotary transport means via the unloading transmission wheel, a dedicated drive device can be omitted.

<< Examples >> Examples of the present invention will be described with reference to the drawings.

FIG. 1 is a view for explaining a method of aligning front and back, front and rear directions of a lead frame according to an embodiment of the present invention.

This method has an orientation detection step 1, a front operation step 2, and a front operation step 3.

In the direction detecting step 1, the lead claim R in the electronic component manufacturing process is carried in from a carry-in port (not shown) to a predetermined detection position 4 in a vertically and horizontally long detecting posture, and the direction of the lead frame R is detected by the direction detecting device 16. I do.

That is, the photosensor 6 detects which corner of the four corners of the lead frame R has the notch mark 53 to detect the orientation of the lead frame R.

That is, the front of the lead frame R is marked f
If the side end is leftward h, the posture is forward left
fh, when the table is facing backward r and the mark 53 side end is leftward h, the posture is detected as rear left facing rh, and when the table is facing forward f and the mark 53 side end is rightward m. , The posture is detected as a front-rightward fm, and when the front is in the rearward direction r and the end of the mark 53 is m in the rightward direction, the posture is detected as the rear-rightward rm.

In the front operation step 2, the lead frame R is transferred from the detection position 4 to the front operation position 7, and then, based on the detection signal of the orientation detection device 16, the front operation means 8 controls the left and right lateral axis 9. Is rotated in either the forward or reverse direction with the center as the center, and the front of the lead frame R is turned upward from the front or rear without turning downward, and the lead frame 4 is turned to the front posture. That is,
The posture of the front left direction fh and the posture of the rear left direction rh are changed to the front left direction sh, and the posture of the front right direction fm and the rear right direction rm are changed to the front right direction sm. The redirected lead frame R is supported by the supporting means 10. Here, the posture of the front left sh
A posture in which the front of the lead frame R is upward and the mark 53 side end is leftward h, and a front right sm is a posture in which the front of the leadframe R is upward and the mark 53 side end is right m. Say.

In the forward operation step 3, based on the detection signal of the direction detection device 16, the turning operation means 11 rotates the support means 10 in either the forward or reverse direction about the front and back direction axis 12 which is oriented vertically, The lead frame R supported by the support means 10 is turned from sideways to forward without turning backward, and is unified to the front-facing sf, which is the target posture. Here facing forward
The term “sf” refers to a posture in which the front surface of the lead frame R is upward and the end on the mark 53 side is forward f.

FIGS. 2 to 12 are views for explaining a lead frame front / back / front / rear direction aligning apparatus according to an embodiment of the present invention.
2 shows a lead frame front / back / front / rear direction aligning device. As shown in FIG. 2, this device 14 includes a loading device 15, a direction detecting device 16, a front operating device 17, a front operating device 18 and a discharging device 19. .

The direction detection device 16, the front operation device 17, and the front operation device 18 are arranged side by side in the order of description along the vertical direction.

The carrying-in device 15 carries the lead frames R one by one into the direction detecting device 16 in a vertical and horizontal posture, and is provided along the horizontal direction while being continuous with the direction detecting device 16.

The carry-in device 15 includes a fixed-quantity intermittent supply device 20 and an individual take-out device 21. The fixed-quantity intermittent supply device 20 is configured to move the lead frame R in the hopper
To intermittently push it forward, guide it to the sliding guide plate 25, and supply it to the individual take-out device 21.

The individual take-out device 21 starts receiving and transporting the lead frame R supplied from the fixed-quantity intermittent supply device 20 by the transport portion near the start end of the transport rotating portion 27 of the winding transport band 26, and starts transporting the lead frame R at the transport portion near the end. One by one, and lift it to the end position.
It starts to be sent from 30.

The direction detecting device 16 carries the lead frame R in the electronic component manufacturing process from the work entrance 31 to the detecting device 4 in a vertically and horizontally long detecting posture, and detects the direction of the lead frame R by the direction detecting photosensor 6. Is configured as follows.

The direction detection device 16 includes a pair of drop guide plates 32, a work supply shutter 33, a work support shutter 34, a pair of detection arms 35, and four pairs of photosensors 6.

The drop guide plate 32 is provided in a front-rear facing state, a work entrance 31 is formed between the upper portions thereof, and a vertical drop guide space 36 continuous with the work entrance 31 is formed below the work entrance 31.

The work supply shutter 33 is provided on the upper part of the drop guide space 36 so as to be openable and closable, is driven to be opened and closed by a solenoid 37, and supplies the lead frame R in the work carry-in port 31 to the fall guide space 36 in an open state. ing.

The work supporting shutter 34 is provided in the middle of the drop guide space 36 so as to be openable and closable, is driven to open and close by a solenoid 38, and is closed when the lead frame R in the drop guide space 36 is closed.
Is held at the detection position 4.

As shown in FIGS. 7 to 10, the pair of detection arms 35 are moved toward and away from guide rails 42 formed at a predetermined length on both front ends of a horizontal frame 41 laid on the machine frame 40. Slidably guided by a pair of telescoping cylinders 43, and slidably driven in the approaching / separating direction so as to sandwich both ends of the lead frame R at the detection position 4 from both sides at the approaching position.

Each detection arm 35 is formed in a U-shape, and upper and lower work support pins 44 and 45 are laid across the inner space, and both ends 46 of the lead frame R are supported on the lower work support pin 45 in a state of being run over, The lead frame R can be set to an appropriate detection posture. The upper work support pins 44 are for regulating the lead frame R from jumping up.

As shown in FIG. 11, a stopper 47 for restricting the approach width of the detection arm is provided below the guide rail 42 so as to correspond to several types of lead frames R having different lateral widths.
This stopper 47 is long and has a three-step receiving surface with steps at both ends.
48 are formed. The stopper 47 is attached to a stay 49 rotatably mounted on the machine frame 40 as shown in FIG.
When the operation lever 51 is operated, the stopper 47 is tilted so that the detection arm 35 is brought into contact with one of the three stepped receiving surfaces 48 so that the detection arm 35 according to the lateral width of the lead frame R is provided. The proximity width can be set.

Each photo sensor 6 is connected to each detection arm 35 as shown in FIG.
Marks 53 cut out at any of the four corners of the lead frame R in the detection posture are provided two pairs in the upper and lower directions toward the inner space 52 of the lead frame R as shown in FIG. It is possible to detect whether or not there is, thereby detecting the direction of the lead frame R.

The front operation device 17 moves the lead frame R from the detection position 4 to the front operation position 5 as shown in FIG. 3, and displays the lead frame R based on the detection signal of the orientation detection device 16. In the direction of the operating means 8, approximately in the forward or reverse direction around the longitudinal axis 9 shown in FIG.
It is turned upward by 1/4 turn and is supported by the support means 10, and is configured as follows.

The front operation device 17 is configured by arranging the fall guide means 54, the front operation means 55, and the support means 10 in order from top to bottom.

The drop guide means 54 extends the lower part of the pair of drop guide plates 32 downward to extend the vertical drop guide space 36 downward,
The lead frame R is configured to be guided to fall in a substantially vertical landscape orientation.

The front-facing operation means 55 causes the lead frame R, which has been guided to fall by the fall guide means 54, to be moved from a substantially vertical landscape orientation by the tilt guide direction switching operation of the pair of front-facing operation tilt switching guides 56. The surface of the lead frame R is guided to fall into an obliquely upright posture in which the surface is obliquely upward, and is then dropped on the support means 10 to fall down into a substantially horizontal landscape position in which the surface of the lead frame R is upward. The inclination switching guides 56 can be switched by the inclination switching solenoid 57 in either forward or reverse directions on the basis of the detection signal of (6).

The support means 10 includes a pair of stopper portions 58 that receive the front edge 39 of the lead frame R falling in the inclined horizontal position and an upward direction that supports the lead frame R in a substantially horizontal horizontal position in which the lead frame surface faces upward. A horizontally long support surface 59 is provided.

The stopper portion 58 is provided upright along the long side of the horizontally long support surface 59 facing upward.

The forward operation device 18 is based on the detection signal of the direction detection device 16, and by rotating the support means 10 about 1/4 around the front and back direction axis 12 by the turning operation means 60 in either the normal or reverse direction, The lead frame R supported by the support means 10 is turned from the side to the front, and is configured as follows.

The forward operating device 18 includes the support means 10, a turning actuator 61, a lifting / lowering operating cylinder 62, and a power transmission wheel 53.

The support means 10 is configured such that a pair of left and right rotatable transport belts 66 are rotatably supported by a support frame 64 via front and rear idler wheels 65.

The swivel actuator 16 moves the support means 10 to an upper position left-right posture 67 for receiving a lead frame and an upper position front / back / front-rear posture 68.
The supporting means 10 is connected to the supporting means 10 via a turning shaft 69 in such a manner as to be able to be driven to turn so as to be switched.

The lifting / lowering operation cylinder 62 moves the support means 10 to an upper position front-rear position 68 and a lower position front-rear position 70 for carrying out the lead frame.
The supporting means 10 is connected to the supporting means 10 via a piston rod 71 so as to be able to be driven up and down so as to be switched.

The unloading transmission wheel 63 moves the rotatable transport belt 66 of the support means 10 to a later-described unloading position 19 in a state where the support means 10 is located in the lower position front-rear posture 70 for unloading the lead frame. A transmission is provided between the rotatable transport belt 66 and the rotatable carry-out belt 72 so as to be linked to the 72.

That is, the unloading transmission wheel 63 is in contact with the unloading start end 73 of the rotatable unloading belt 72, and when the support means 10 is in the lower position, the front-rear position 70, the unrotating transfer belt 66 is unloaded. It comes to be in contact with the wheel 63.

As shown in FIG. 2, the unloading device 19 unloads the lead frames R one by one from the forward operating device 18 and is continuous with the forward operating device 18 and has a horizontal orientation. It is provided in a state where it is extended to the same side as the loading device 15.

The unloading device 19 is configured by rotatably mounting a rotatable unloading belt 72.

The front / back / front / rear alignment device 14 is controlled by a control device (not shown).

As shown in FIG. 4, the transporting end of the rotary delivery belt 72
When the lead frame R is taken out by a predetermined take-out device at 74 and the lead frame R is no longer at the transport end 74, the photoelectric switch 75 detects this,
The motor 76 is started to rotate the rotatable carry-out belt 72,
On the other hand, when the lead frame R is transported to the transport termination 74, based on the detection by the photoelectric switch 75,
The motor 76 is stopped, and the rotatable carry-out belt 72 is stopped.

When the lead frame R comes to the front operation position 7,
Based on the detection by the photoelectric switch 77,
The tilt switching guide 56 which has been switched to one of the reverse tilt guide directions is returned to the original position, and thereafter, the turning actuator 61 is driven by the sequence control, and the support means 10 is moved from the upper position left-right posture 67 to the upper position. The posture is switched to the front-back posture 68, and based on the detection of this by the photo sensor 78, the lifting / lowering operation cylinder 62 is activated, and the support means 10 is moved to the upper position front-back posture 68.
Then, the posture is switched to the lower front-rearward posture 70, and the lead frame R on the support means 10 is sent out from the support means 10 to the unloading device 19.

When the lead frame R on the supporting means 10 is lost, based on the detection by the micro switch 79, the lifting / lowering operating cylinder 62 is activated, and the supporting means 10 is moved from the lower position back and forth posture 70 to the upper position back and forth posture. It is switched to the posture 68, and based on the detection of this by the auto switch 80,
The turning actuator 61 is activated, and the support means 10 is switched from the upper position front-rearward posture 68 to the upper position left-right posture 67.

When the support means 10 has reached the upper position left and right posture 67,
Based on the detection by the photo sensor 78, the solenoid 38 is activated and the work supporting shutter 34 is opened,
When the lead frame R at the detection position 4 is moved to the front operation position 7 and the solenoid frame R is no longer at the detection position 4, the solenoid 37 is activated based on the photosensor 82 detecting that the solenoid frame R is no longer supplied. Shutter
33 is opened, and the lead frame R in the work entrance 31 is supplied to the detection position.

When the lead frame R in the work carry-in port 31 is exhausted, the photoelectric switch 83 detects this, and
When the motor 84 is started, the winding conveyance band 26 of the individual unloading device 21 is activated.
Is rotated, and the lead frame R of the terminal rotation part 30 is supplied into the work entrance 31.

When the winding transport band 26 rotates and the lead frame R is removed from the terminal rotating portion 30 and is lost, the stop photoelectric switch 85 detects this and the stop position indexing photo sensor 86 detects the lead frame R. Based on the detection of the stop position, the motor 84 is stopped and the lead frame R
Is stopped at the terminal rotation section 30, the rotation of the winding conveyance band 26 is stopped.

When the lead frame R is completely conveyed and lost from the intermediate portion of the conveyance section 28 near the start end, the motor 76 is started based on the detection by the start photoelectric switch 87, and the work-conveying winding conveyance band is supplied. 23 is rotated, and the transport section
When a certain amount of the lead frame R is supplied to the motor 28, the motor 89 is stopped and the rotation of the work supply winding conveyance belt 23 is stopped based on the detection by the stop photoelectric switch 88. You.

FIG. 13 shows another example of the front operation unit 8. In this example, one front-side operation inclination switching guide 56 is arranged at the center in the downwardly expanding guide case 90 so that the inclination guide direction can be switched to either forward or reverse. The switching operation is enabled by the solenoid 91.

FIG. 14 shows still another example of the front operation means 8. In this example, a single front-facing operation inclination switching guide 56 is provided in the center of a guide case 90 having an upper half that is downwardly expanded and a lower half that is downwardly reduced in diameter. The lead frame R is guided to fall onto the supporting means 10 by a switchback operation.

[Brief description of the drawings]

FIG. 1 shows the front and back of a lead frame according to an embodiment of the present invention.
FIGS. 2 to 12 are explanatory diagrams of a front / back / front / rear alignment device for a lead frame according to an embodiment of the present invention. FIG. 2 is an overall explanatory diagram, and FIG. 3 is FIG. FIG. 4 is an enlarged side view of part III, FIG. 4 is an overall side view showing the relationship of drive control, FIG.
FIG. 6 is a plan view, FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. 2, FIG. 7 is a front view of the front / back / front-rear direction detecting device, FIG. 8 is a plan view of the same device, and FIG. FIG. 10 is an explanatory diagram of a detection state of the device, FIG. 11 is a plan view of a stopper of the device, FIG. 12 is an explanatory diagram of interlocking of the stopper, and FIG. FIG. 14 is an explanatory view of still another example of the same means, FIG. 15 is a plan view of a lead frame, FIG. 16 is a cross-sectional view taken along the line XVI-XVI of FIG. 14, and FIG. FIG. 18 is a process diagram showing the end of the manufacturing process of the integrated circuit, and FIG. 18 is an explanatory diagram of an example of a prototype conceived prior to the present invention. DESCRIPTION OF SYMBOLS 1 ... Direction detection process, 2 ... Front operation process, 3 ... Front operation process, 4 ... Detection position, 5 ... Front operation device, 6 ... Front / back / front / rear direction detection means, 7 ... Front operation position, 8 Front operation means, 9 Left and right horizontal axis,
10 support means, 11 turning operation means, 12 front and rear direction axis center, 14 front and back / front and rear direction alignment device, 15 loading device, 16 direction detection device, 17 front operation Equipment, 18 ...
… Front operation device, 19… unloading device, 31… loading entrance, 39
…… side edge before dropping, 54 …… fall guide means, 56 …… tilt switching guide, 57 …… tilting switching actuator, 58 …… stopper part, 59 …… upward horizontally long support surface, 61 …… turning actuator , 62 ...
… Elevator, 63… Transmission transmission wheel, 64… Support frame, 66
…… Rotary transfer means, 67 …… Top position left / right orientation, 68…
… Upward position front and rear posture, 70 …… down position front and rear posture, 72
…… Rotary discharge means.

Claims (5)

(57) [Claims] An orientation detection step, a front operation step 2, and a front operation step 3. In the orientation detection step 1, a lead frame R in an electronic component manufacturing process is moved from a predetermined entrance to a predetermined detection position. In the front operation step 2, the lead frame R is transferred from the detection position 4 to the front operation position 7, and the lead frame R is detected by the orientation detection device 16. On the basis of the detection signal of the direction detecting device 16, the lead frame R is rotated in the forward or reverse direction about the left and right lateral axis 9 by the front operation device 17 so that the front of the lead frame R faces downward. Instead, the lead frame R is turned upward from the front or the rear, and the lead frame R is turned to the front position, and is supported by the supporting means 10. In the front operation step 3, the front detection operation is performed based on the detection signal of the direction detection device 16. The support means 10 of the operating device 18 for turning
By rotating the lead frame R supported by the support means 10 from the side to the front without turning backward by rotating the lead frame R in either the forward or reverse direction about the front and back direction axis 12 at the center. Method of aligning the front and back, front and back of the lead frame in the manufacturing process of electronic components. 2. An orientation detection device 16, a front operation device 17, and a front operation device 18. The orientation detection device 16 moves the lead frame R in the electronic component manufacturing process from a predetermined entrance 31 to a predetermined detection position 4. And the direction of the lead frame R is detected by the direction detecting means 6. The front operation device 17 moves the lead frame R from the detection position 4 to the front operation position 5. At the same time, the lead frame R is rotated in the forward or reverse direction about the left and right lateral axis 9 by the front operation device 17 on the basis of the detection signal of the direction detection device 16 so that the front frame of the lead frame R Is turned upward from the front or the rear without turning downward, the lead frame R is turned to the front position, and the support means 10 supports the lead frame R. The front operation device 18 includes the direction detection device 16 Inspection On the basis of the signal, the support means 10 is rotated in either the forward or reverse direction around the front-back direction axis 12 by the turning operation means 11 so that the lead frame R supported by the support means 10 is moved backward. A front-back / front-back / front-rearrangement device for a lead frame in an electronic component manufacturing process, characterized in that the device is configured to be turned from sideways to front without performing. 3. An input device 15, a direction detection device 16, a front operation device 17, a front operation device 18 and a discharge device 19, the direction detection device 16, the front operation device 17 and the front operation device.
18 are provided along the direction of the description in one direction, and the carry-in device 15 carries in the lead frame R one by one into the direction detecting device 16 in a predetermined posture. 16 and provided along the direction crossing the one direction.
It is a device that is carried out one by one from 18 and is a front operation device
The lead of the electronic component manufacturing process according to claim 2, wherein the lead is provided so as to be continuous with the one in the one direction and to cross in the one direction and to extend to the same side as the carry-in device 15. Front / back / front / rear alignment device for frames. 4. The front-facing operation device 17 is provided with
4, the front operation means 8 and the support means 10 are arranged in order from top to bottom, and the fall guide means 54 is configured to guide the lead frame R to fall in a substantially vertical landscape orientation, The front-facing operation means 8 converts the lead frame R, which has been guided to fall by the fall guide means 54, into a front-facing operation inclination switching guide.
By performing the tilt guide direction switching operation of 56, the lead frame R is guided to fall from a substantially vertical horizontal position to a tilt horizontal position in which the surface of the lead frame R is obliquely upward, and then is dropped on the support means 10 to cause the surface of the lead frame R to fall. The tilt switching guide 56 is configured to be able to switch the tilt guide direction to either forward or reverse by a tilt switching actuator 57. Means 10 includes a stopper portion 58 for receiving the front edge 39 of the lead frame R falling in the inclined horizontal posture,
4. An electronic component manufacturing process lead according to claim 2, wherein an upwardly-facing horizontally long supporting surface 59 for supporting the lead frame R in a substantially horizontal laterally-oriented posture with the lead frame surface facing upward is provided. Front / back / front / rear alignment device for frames. 5. The front-facing operating device 18 includes the support means 1
0, a turning actuator 61, a lifting / lowering actuator 62, and an unloading transmission wheel 63, and the supporting means 10 is constituted by supporting a rotatable conveying means 66 on a supporting frame 64 so as to freely rotate. Is connected to the supporting means 10 so as to be able to rotate and drive so as to switch and drive the supporting means 10 between an upper position left and right posture 67 for receiving a lead frame and an upper position front and rearward posture 68. The supporting means 10 is operatively connected to the supporting means 10 so as to be driven up and down so that the supporting means 10 is switched between an upper position front-rearward posture 68 and a lower position front-rearward posture 70 for unloading the lead frame. In a state where the means 10 is located in the lower position front / rear posture 70 for lead frame unloading, the rotary transport means 66 of the support means 10 is linked with the rotary unloading means 72 of the unloading device 19 in an interlocking manner. Patent Document 1 is provided so as to be able to transmit between the dynamic transfer means 66 and the rotary discharge means 72. Front and back-rear direction alignment device of the lead frame of the electronic component manufacturing process as described in paragraph 4 range determined.