JPH077775B2 - Lead frame transportation method and device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lead frame carrying method and a device for carrying a lead frame for a semiconductor device.

[Conventional technology]

FIG. 14 is a perspective view of a conventional lead frame carrying device, and FIG. 15 is an exploded perspective view of a part thereof, which will be described with reference to the same drawing. A plurality of notches formed in the carrying shaft 1 are shown. The base ends of the transfer arms 2 are fitted and fixed to the screws 1a by screws 1a, and a pair of transfer pins 4 each having a sharp end is fixed to the tip of each transfer arm 2. . The carrier pin 4 is removably inserted into the carrier hole 5a of the lead frame 5.

One end of the transport shaft 1 is connected to the piston rod 7a of the air cylinder 7 via the coupling 6, and by moving the piston rod 7a forward and backward, the transport shaft 1 moves to the 14th position.
It is configured to move back and forth in the direction indicated by the arrow in the figure.
Reference numeral 8 denotes a stopper that regulates the movement amount of the transport shaft 1 by contacting the other end of the transport shaft 1 so that the other end of the transport shaft 1 can move freely. It is fixed to the (not shown) side.

Then, the lead frame 5 is moved by a predetermined amount by the operation of the air cylinder 7 with the carrying pin 4 at the tip of the carrying arm 2 inserted into the carrying hole 5a of the lead frame 5, and then the lead frame 5 side is lowered and carried. The transport pin 4 is removed from the hole 5a. In this detached state, the air cylinder 7 is operated, the transport shaft 1 is returned to the initial position, and then the lead frame 5 side is lifted and the transport pin 4 is inserted into another transport hole 5a. By repeating this, the lead frame 5 is pitch-fed by a predetermined amount.

The conveyance pitch of the lead frame 5 can be adjusted by the position of the stopper 8.

[Problems to be Solved by the Invention]

However, in such a conventional lead frame carrying device, when changing the model of the lead frame to be carried, not only the carrying shaft 1 and the carrying arm 2, but also the bearing 9 as a whole must be replaced. The work is troublesome,
There is a problem that it is time-consuming, takes a lot of time, and is inferior in productivity.

Therefore, the present invention has been made to solve the above-mentioned problems, and facilitates the replacement work and shortens the working time at the time of replacing the model of the lead frame, and leads the lead frame transfer with excellent productivity. It is an object to provide a method and an apparatus thereof.

[Means for Solving the Problems]

In order to achieve such an object, in the present invention, as a first lead frame transporting method, a lead frame transporting method in which a lead frame supported by a guide rail is pitch-fed by a predetermined amount, is movable in a transport direction, In addition, a plurality of members are detachably and integrally supported by a support body disposed so as to be rotatable about an axis parallel to the transport direction, and are coupled by a connecting member in the transport direction and detachably. An inserting step of rotating the arm mounting plate together with the support member to insert the carrier pins of the plurality of carrier arms fixed in advance on each arm mounting plate into the carrier hole of the lead frame, and the carrier pin insertion state of the carrier pin. Then, the feeding step of moving the arm mounting plate forward together with the support by a predetermined amount in the transport direction, and after the forward moving, the arm mounting plate is rotated together with the support to move the transport pin. And a returning step of moving the arm mounting plate together with the support body by a predetermined amount in the transport direction and returning the arm mounting plate to the initial position in a detached state of the transport pin from the transport hole. A method of transporting a lead frame by sequentially repeating is provided.

Further, as a device for carrying out the method, in a lead frame transfer device that feeds a lead frame supported by a guide rail by a predetermined amount at a pitch, a plurality of transfer pins equipped with transfer pins that can be inserted into and removed from a transfer hole of the lead frame The arm mounting plates to which the transfer arms are previously fixed, the connecting member for connecting the arm mounting plates in the transfer direction in a detachable manner, and the arm mounting plates connected by the connecting members are detachably and integrally formed. In order to insert and remove the support body, which is supported and is movable forward and backward in the transport direction and rotatable about an axis parallel to the transport direction, into and out of the transport hole. A rotation operation mechanism for rotating the support, and an arm mounting plate that moves forward together with the support in the transport direction while the transport holes of the transport pins are inserted to remove the transport holes of the transport pins. In reciprocating drive mechanism retracting movement with respect to the transporting direction arm mounting plate together with the support to provide a made is provided apparatus.

Further, in a lead frame carrying method as the second lead frame carrying method of the present invention, in which lead frames supported by guide rails are pitch-fed by a predetermined amount, a plurality of connecting members are detachably connected in the carrying direction. The arm mounting plate that is detachably and integrally supported by the support body that is arranged to be able to move forward and backward in the transport direction, and the transport pins that the transport arms that are respectively fixed to this arm mounting plate have are moved up and down. An inserting step of inserting the guide rail in the carrying hole of the lead frame by moving the guide rail in the vertical direction, and a forward movement of the arm mounting plate together with the support body by a predetermined amount in the carrying hole inserting state of the carrying pin. After the feeding step and the forward movement, the guide pin is moved up and down to disengage the transport pin from the transport hole of the lead frame. The releasable step of moving the arm mounting plate together with the support member by a predetermined amount in the transport direction in the detached state of the transport pin from the transport hole, and the returning step of returning the arm mounting plate to the initial position are repeated. A method of transporting a frame is provided.

Further, as a device for realizing the method, in a lead frame transfer device for feeding a lead frame supported on a guide rail by a predetermined amount at a pitch, an elevating operation mechanism for vertically moving the guide rail, and an elevating and lowering mechanism. A transfer arm having a transfer pin that is inserted into and removed from the transfer hole of the lead frame corresponding to the vertical movement of the guide rail by the operation mechanism, a plurality of arm mounting plates for fixing the transfer arms, and the arm mounting. A connecting member that removably connects the plates in the carrying direction and an arm mounting plate that is connected by the connecting member are detachably supported integrally and are arranged so as to be movable forward and backward in the carrying direction. With the support provided, the arm mounting plate is moved forward in the transport direction together with the support in the transport hole insertion state of the transport pin,
Provided is a device provided with a reciprocating drive mechanism for moving the arm mounting plate together with the support member in a retreating direction with respect to the carrying direction in a state where the carrying pin is removed from the carrying hole.

[Action]

According to the first lead frame carrying method and the apparatus therefor of the present invention, the supporting member is turned around the carrying direction by the turning operation mechanism, and the carrying pin of the carrying arm is inserted into and removed from the carrying hole of the lead frame. In the inserted state and the detached state, if the arm mounting plate is moved forward and backward in the conveying direction by the reciprocating drive mechanism synchronously, the lead frame is conveyed by a predetermined amount at a pitch.

When changing the model, remove the arm mounting plate to which a plurality of transfer arms are fixed in advance from the support, remove the connecting member that connects each arm mounting plate, replace or increase or decrease the arm mounting plate, and then re-install. , Connect with a connecting member,
It may be attached to the support.

Further, according to the second lead frame carrying method and apparatus, the guide rail is moved up and down by the elevating operation mechanism so that the carrying pin of the carrying arm is inserted into and removed from the carrying hole of the lead frame, and the insertion state and the detachment state thereof. In this state, when the arm mounting plate is moved forward and backward in the carrying direction by the reciprocating drive mechanism in synchronization with each other, the lead frame is carried by a predetermined amount at a pitch.

And when replacing the model, remove the arm mounting plate from the support, attach the connecting member that connects each arm mounting plate, replace or increase or decrease the arm mounting plate, and then
It may be connected with a connecting member and attached to the support.

〔Example〕

Hereinafter, a first lead frame carrying method and apparatus of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a drive unit of the lead frame transfer device, and FIG. 2 is a perspective view of the transfer unit. In FIG. 1, reference numeral 11 denotes a reciprocating drive mechanism, which is a substrate 12 fixed to the device body (not shown) A servomotor 14 supported by a support bracket 13 provided above, a pulley 15 mounted on a motor shaft 14a of the servomotor 14, and a drive shaft pivotally supported by a bearing stand 16 provided on the substrate 12. A timing belt 19 is stretched between pulleys 18 mounted on the belt 17.

The drive shaft 17 is composed of a first drive shaft 17a and a second drive shaft 17b which are divided in the axial direction, and the first drive shaft 17a and the second drive shaft 17b.
It is connected to 17b by a clutch mechanism 20 so as to be freely connected and disconnected.
The clutch mechanism 20 is normally configured so that power can be transmitted freely in the connected state, and is disengaged when an overload is applied, so that power transmission is cut off.

A male screw portion is formed on the outer peripheral portion of the second drive shaft 17b, while a corresponding female screw portion is formed on the shuttle 22 side of the second drive shaft 17b that is externally mounted, and by the ball screw mechanism, The shuttle 22 is configured to move back and forth in the axial direction of the second drive shaft 17b according to the rotation of the second drive shaft 17b.

Reference numeral 24 denotes a spline shaft extending from the side of the drive mechanism 11 in the conveyance direction of the lead frame 5, and its movement in the axial direction is restricted by a plurality of bearing bases 25 fixed to the apparatus main body (not shown) side. It is rotatably supported in this state.

As shown in FIGS. 2 and 3, a plurality of supports 26 are spline-fitted to the spline shaft 24 so that they can be relatively moved in the axial direction of the spline shaft 24 and cannot be relatively rotated about the axial center. Is attached to. Therefore, the support 26 is integrally rotatable with the spline shaft 24, which is a shaft parallel to the transport direction, and is rotatable about its axis, and the spline shaft 24 is rotatable in the transport direction.
It is provided so as to be movable relative to each other along 24.

A plurality of arm mounting plates 28 are arranged in parallel with the transport direction, that is, the axial direction of the spline shaft 24, and are detachably connected by a connecting member 29. That is, as shown in FIG. 3, a concave groove 30 orthogonal to the carrying direction is formed on the upper surface of the end of each arm mounting plate 28.
Is formed, and both ends of the connecting member 29, which is U-shaped when viewed from the front, are fitted into the respective recessed grooves 30 so that the connecting member 29 and the arm mounting plate 28 are formed.
And are fastened with screws 31.

A plurality of sets of transfer arms 32 are detachably fixed to the arm mounting plate 28 for each block connected by the connecting member 29. That is, as shown in FIG. 4, the arm mounting plate 28
A positioning pin 33 is provided on the lower surface side of the transfer arm 32.
The arm mounting plate 28 and the transfer arm 32 are fastened with screws 35 with the pins 33 penetrating through the positioning holes 34 formed at the base end of the. The leading end of the carrying arm 32 is projected forward, and the lower ends of the U-shaped parts facing each other at the leading end are carried downwardly in a projected manner at desired intervals as shown in FIG. Pins 36 are provided respectively.

As shown in FIGS. 3 and 4, a concave groove portion 37 and a positioning hole 26a are formed on the upper surface side of each of the support bodies 26, and the base end portion of each transport arm 32 is in a fitting shape. arm
The support body 26, the transfer arm 32, and the arm mounting plate 28 are integrally fastened with a screw 38 with the pin 33 penetrating through the support member 32 fitted therein, and each arm mounting plate 28 is detachably mounted on the support body 26. .

On the upper surface side of the shuttle 22, FIG. 1, FIG.
As shown in the drawing, a guide groove 40 orthogonal to the carrying direction, that is, in the front-rear direction is formed, and the rear portion of the connecting body 41 is detachably fitted into the guide groove 40 from above. Connector 41
Is an upper connecting plate 41a, a pair of front and rear supporting plates 41b screwed downwardly to the rear lower surface of the connecting plate 41a, and rollers which are rotatably attached to the left and right ends of the lower part of each supporting plate 41b. And a rolling element 41c formed of a bearing or the like, and each rolling element 41c is fitted movably in the vertical direction by rolling along the side surface 40a of the guide groove 40. It should be noted that the rolling element 41c may be provided on only one of the left and right sides.

The front portion of the connecting plate 41a is bifurcated, and as shown in FIGS. 1 to 3, a groove 28a is formed on the upper surface of the arm mounting plate 28.
Is formed, and a screw 43 is detachably fastened to the arm mounting plate 28 as a fitting shape, and the shuttle 22 and the arm mounting plate 28 are interlockingly connected to each other by the connecting body 41.

As shown in FIGS. 1 and 6, a light shielding plate 45 is fixed to the rear surface side of the shuttle 22 so as to project rearward, and a light emitting body for detecting a feed position is provided on the substrate 12 located behind the shuttle 22. Further, a feed detection unit 46 including an optical sensor and a return detection unit 47 including a light emitting body for detecting a return position and an optical sensor are provided. Then, when the light blocking plate 45 moves to the position corresponding to each of the detection units 46 and 47 due to the forward and backward movement of the shuttle 22, the light from the light emitter to the optical sensor is blocked, and the position of the shuttle 22 is detected.

FIG. 7 exemplifies the position adjusting mechanism of the detection units 46 and 47, and the support bases 49 and 50 to which the detection units 46 and 47 are attached, respectively.
The rear end of the rear is fitted and supported only along the guide rod 51 so as to be movable only in the left-right direction, and between the two support bases 49 and 50, a frame is rotatably operated around the vertical axis on the substrate 12 side. A body 52 is provided. A plurality of pairs of position adjusting surfaces 52a, 52b, 52c, 52d are formed on the outer peripheral surface of the top body 52 so as to face each other in the radial direction and are parallel to each other in the circumferential direction, and the pair of position adjusting surfaces 52a, 52b, 52c, 52d are formed. The distances from the center of rotation are equal to each other, and the distances from the center of rotation between the pair of position adjusting surfaces 52a, 52b, 52c, 52d are different from each other. In addition, the support bases 49 and 50 are adjusted by the pressing springs 53 and 54 to adjust the position of the top body 52.
52a, 52b, 52c, 52d side is elastically biased. Then, as shown by the phantom lines by the turning operation of the top body 52, the position adjusting surfaces 52a, 52b, 52c, 52d are changed to adjust the distance between the support bases 49, 50 to the perspectives, and the detecting portions 46, 47 are respectively arranged there. The position of can be easily adjusted.

As shown in FIG. 1 and FIG. 8, an interlocking member 56 is attached to a middle portion of the spline shaft 24 in the longitudinal direction,
The interlocking body 56 is fitted to the spline shaft 24 by spline fitting or by fastening the forked portion 56a with the screw 57.
It is configured to rotate integrally with. The interlocking body 56 is provided with a downwardly extending leg portion 56b, and a rolling wheel 56c is provided at a bifurcated portion of the leg portion 56b.
Is rotatably supported. An air cylinder 58 is provided at the lower rear of the leg portion 56b, and the rolling wheel 56c is pushed by projecting the piston rod 58a of the air cylinder 58, and the spline shaft 24 is positively rotated about the axis there. It By the positive rotation of the spline shaft 24, the respective support members 26 and the respective arm mounting plates 28 are integrally rotated forward, and the tip end portions of the respective transport arms 32 are rotated upward. By the upward rotation of the tip of the transfer arm 32, as shown in FIG. 2, the transfer hole of the lead frame 5 supported between the opposed grooves of the pair of front and rear guide rails 60 laid along the transfer direction. The transport pin 36 is removed from 5a.

Further, if the piston rod 58a of the air cylinder 58 is retracted, the support portion 6 fixed to the leg portion 56b and the apparatus main body (not shown) side.
The interlocking body 56 by the return spring 62 stretched over 1
Is returned, and the spline 24 is rotated in the opposite direction. By the reverse rotation of the spline shaft 24, the reverse operation is performed and the transport pin 36 is inserted into the transport hole 5a of the lead frame 5. 63
Is a position detection sensor that detects the retracted position of the piston rod 58a of the air cylinder 58. Then, the interlocking body 56, the air cylinder 58, etc. constitute a rotation operation mechanism 64 for rotating the support body 26, the arm attachment plate 28, and the transfer arm 32.

It should be noted that when the arm mounting plate 28 is rotated forward and backward, the rolling element 41c of the connecting body 41 rolls up and down on the side surface 40a of the guide groove 40.

FIG. 9 shows a control block diagram of the apparatus, and the feed detection unit 46,
The control unit 66 judges the detection signals from the return detection unit 47 and the position detection sensor 63, sends a signal to the pulse generation circuit 67 to rotate the servomotor 14 forward and reverse, and sends a signal to the solenoid valve 68 to perform a switching operation. Then, the supply release operation of the compressed air from the air compressor 69 to the air cylinder 58 is performed.

FIG. 10 shows the relationship between the supply state of compressed air to the air cylinder 58 and the position of the shuttle 22. At the initial position of the shuttle 22, the supply of compressed air to the air cylinder 58 is stopped. At this time, the light shield plate 45 of the shuttle 22 is positioned on the return detection unit 47, and the piston rod 58 of the air cylinder 58 is
Since a is in the retracted position, the transport pin 36 is inserted into the transport hole 5a of the lead frame 5 (insertion step).

The servomotor 14 is rotationally driven in the feed direction by the detection signal of the position detection sensor 63 that detects the retracted position of the piston rod 58a, and the shuttle is rotated by the rotation of the drive shaft 17.
22 moves in the carrying direction along the axial direction of the drive shaft 17.
By the movement of the shuttle 22 in the carrying direction, the arm mounting plate 28 and the carrying arm that are linked to the shuttle 22 by the connecting body 41 are interlocked.
32 and the support 26 are moved in the carrying direction, and the lead frame 5 having the carrying pin 36 of the carrying arm 32 inserted therein is moved forward in the carrying direction (feeding process).

After a lapse of a predetermined time (T1), the shuttle 22 moves forward by a predetermined distance A, the light shielding plate 45 is positioned on the feed detecting section 46, and the servo motor 14 is stopped and the air cylinder 58 is moved to the air cylinder 58 by the detection signal of the feed detecting section 46. Compressed air is supplied, the piston rod 58a protrudes, and the interlocking body 56 is rotated, so that the transport pin 36 is disengaged from the transport hole 5a of the lead frame 5 (separation step).

The position detection sensor 63 detects the protruding position of the piston rod 58a of the air cylinder 58, and the detection signal causes the servo motor 14 to be driven to rotate in the reverse direction in the return direction.
2. The arm mounting plate, the transfer arm 32, and the support 26 are returned to the rear in the transfer direction (return step).

Then, after a lapse of a predetermined time (T2-T1), the shuttle 22 retracts by a predetermined distance A, the light shielding plate 45 is positioned in the return detection unit 47, and the servo motor 14 is stopped by the detection signal of the return detection unit 47. The supply of compressed air to the air cylinder 58 is released, the piston rod 58a is retracted, and the interlocking body 56 is reversely rotated, and the transport pin 36 is inserted into the transport hole 5a of the lead frame 5 (insertion step). .

The position detection sensor 63 detects the retracted position of the piston rod 58a of the air cylinder 58, and the detection signal causes the servo motor 14 to be rotationally driven again in the feed direction. By repeating the above steps sequentially, the lead frame 5 is conveyed by a predetermined amount in pitch in the conveying direction.

Further, in FIG. 2, as shown by phantom lines, the first mold device 71, the second mold device 72, and the third mold device 73 are arranged along the carrying direction for each block of each arm mounting plate 28. As shown in FIG. 11A, the lead frame 5 that is installed and is pitch-conveyed along the guide rail 60 is the lead frame 5 of the molded IC, and the frame frame 5b in which the conveyance hole 5a is formed.
A first connecting lead 5d for connecting the mold portion 5c and the frame 5b, and an external lead 5e arranged between the mold portions 5c.
And a second connecting lead 5f for connecting the frame frame 5b to each other, and the second connecting lead 5f is cut by the first mold device 71 as shown in FIG.
5e is cut off at an intermediate portion between the mold portions 5c. Thereafter, in the second mold device 72, as shown in FIG. 11C, each outer lead 5e is pressed and bent, and the third mold device 73 cuts the first connecting lead 5d. The IC shown in Figure 11D is obtained.

When the lead frame 5 is clogged due to a transport trouble or the like during the transport of the lead frame 5 and the transport arm 32 is overloaded, the clutch mechanism 20 is disconnected, and the shuttle 22 or the connection is generated. Since the movement of the body 41 is stopped, breakage of the transport pin 36 can be effectively prevented. Then, the compressed air is supplied to the air cylinder 58 by another operation system,
The transport pin 36 may be removed from the transport hole 5a of the lead frame 5, and the lead frame 5 may be removed from the guide rail 60 to eliminate the clogging. When replacing the model of the lead frame 5, the arm attachment plate 28 and the transfer arm 32 are removed from the support 26, the connection body 41 is removed, and the connection member 29 connecting the arm attachment plates 28 is removed to remove the arm of each block. After replacing the mounting plate 28 and the transfer arm 32 with desired ones or increasing / decreasing the number, the connecting members 29 are connected again to form the support 26.
Since it can be mounted on the side, the replacement work can be performed easily and easily, the work time of the replacement work can be shortened, and the productivity can be improved.

Further, the change of the conveyance pitch can be easily dealt with by changing the positions of the detection units 46 and 47. Further, a system in which the conveyance pitch is controlled by microcomputer control or the like may be used.

Next, a second lead frame carrying method and apparatus according to the present invention will be described. The description of the same parts as those of the first lead frame transport device is omitted. 12 and 13 show a mold device 76, which comprises a lower mold 78 mounted on a base 77 and an upper mold supported on a press ram 79.
A guide rail 60 is provided between the upper mold 80 and the lower mold 78, and the guide rails 60 on both sides are connected to each other by a plurality of connecting plates 81 that are spaced apart in the longitudinal direction. Guide pins protruding downward from the lower surface of the guide rail 60
The lower mold 78 side is movably supported on the lower mold 78 side, and is elastically supported upward by a first coil spring 83 fitted on the guide pin 82. The guide pin 82 is for each guide rail 60.
One pair is provided for each of the two and is supported at a total of four locations.

On the other hand, the press ram 79 has a downwardly protruding push-down pin 85 supported via a holder 84 so as to be vertically movable, and is in contact with the upper surface side of the guide rail 60. A second coil spring 86 having a spring coefficient larger than that of the first coil spring 83 is externally fitted to the push-down pin 85 to elastically urge the lower end push-down portion 85a of the push-down pin 85 downward. A nut 87 is screwed onto the male screw portion of the upper end of the push-down pin 85, and the downward protrusion amount of the push-down pin 85 from the holder 84 can be adjusted by screwing the nut 87 forward and backward. The guide rail 60 is the first coil spring.
The guide rail 60 is held by the pushing force of 83 at the position where it abuts the pushing portion 85a, and the pushing rail 85 pushes down the guide rail 60 against the biasing force of the first coil spring 83 as the press ram 79 descends. .

After the guide rail 60 is lowered by a predetermined amount, the push-down pin 85 is moved to the second position.
The coil spring 86 resists the urging force of the coil spring 86 and moves upward relative to the holder 84. At this time, the lead frame 5 is subjected to predetermined processing by the upper mold 80 and the lower mold 78. The lowering of the guide rail 60 by the predetermined amount is within a range sufficient for the transport pin 36 to separate from the transport hole 5a of the lead frame 5. Here, the mold device 76 constitutes an elevating operation mechanism for moving the guide rail 60 in the vertical direction.

Further, according to this embodiment, the first mold device 71,
The second mold device 72 and the third mold device 73 are configured similarly to the mold device 76 and are arranged in the same manner as the first lead frame transport device.

Next, the transportation method will be described.
At the initial position of, the transport pin 36 has the transport hole 5a of the lead frame 5
And the connecting member 41, the arm mounting plate 28, the transfer arm 32, and the support member 26 are moved in the transfer direction together with the shuttle 22 by the rotational driving of the servo motor 14 in the transfer direction, and the lead frame 5 is moved. It is moved forward by a predetermined amount in the carrying direction (feeding process).

By advancing this predetermined amount, the light shielding plate 45 is positioned on the feed detecting unit 46, the servomotor 14 is stopped by the detection signal of the feed detecting unit 46, the press ram 79 of the mold device 76 is lowered, and the press ram 79 is moved by a predetermined amount. When descending, transport pin
36 is separated from the transport hole 5a of the lead frame 5 (separation step).

At this time, the air cylinder 58 is constructed so as not to be operated.

Then, when the press ram 79 is lowered by the predetermined amount, the servo motor 14 is reversely rotated in the return direction, the shuttle 22 and the like are returned backward by the predetermined amount in the transport direction, and returned to the initial position (returning step). At this time, the light shielding plate 45 is positioned in the return detection unit 47, and the servo motor 14 is stopped by the detection signal of the return detection unit 47, and the press ram 79 of the mold device 76 is raised to return to the initial height. . By this return, the lead frame 5 is raised together with the guide rail 60, and the transport pin 36 is inserted into the transport hole 5a (insertion step).

Upon detecting the return of the press ram 79 to the initial height, the servo motor 14 is rotationally driven again in the feed direction, and the lead frame 5 is conveyed by a predetermined amount in the conveyance direction by repeating the above steps sequentially.

It should be noted that the air cylinder 58 is operated during transportation of the lead frame 5 or the like so as to operate the lead frame 5.
It is used for taking out. Further, although the guide rail 60 is disclosed as being continuous, it may be divided into blocks of the respective transport arms 32. Further, although the structure is shown in which the mold device 76 is also used as the elevating operation mechanism of the guide rail 60, a structure in which an elevating operation mechanism of the guide rail 60 is provided separately from the mold device 76 may be provided.

〔The invention's effect〕

As described above, according to the lead frame transporting method and the apparatus thereof according to the first and second aspects of the present invention, the arm mounting plate is detached from the support side when replacing the lead frame type, and each arm is detached. Remove the connecting member that connects the mounting plates and replace it with an arm mounting plate that has multiple fixed transfer arms fixed in advance, or increase or decrease the number of arm mounting plates that have multiple transfer arms fixed in advance, and connect again with the connecting members. It is only necessary to attach it to the support body side, the replacement work at the time of model replacement is facilitated, the work time can be shortened, and the productivity can be improved.

Further, according to the lead frame transporting method and the apparatus thereof according to claims 3 and 4, when the model of the lead frame is replaced, the arm mounting plate is removed from the support side, and each arm mounting plate is removed. It is sufficient to remove the connecting member to be connected and replace it with an arm mounting plate to which a predetermined transfer arm is fixed, or increase or decrease the arm mounting plate and connect again with the connecting member to mount it on the support side. The work is facilitated, the work time can be shortened, and the productivity can be improved.

[Brief description of drawings]

1 to 10 show a lead frame carrying device according to a first embodiment of the present invention, and FIG. 1 is a perspective view of a drive unit thereof.
FIG. 2 is a perspective view of the lead frame carrying section, and FIG.
Fig. III-III sectional view taken along the line, Fig. 4 is Fig. 3 sectional view taken along the line IV-IV, Fig. 5 is a front view of the shuttle portion, and Fig. 6 is shown in Fig. 5.
FIG. 7 is a plan view showing the adjusting structure of the detecting portion, FIG. 8 is a side view of the rotating operation mechanism portion, FIG. 9 is a control block diagram, and FIG. 10 is an operation explanation. FIG. 11A to FIG. 11D are explanatory views showing a procedure of processing by a mold device,
FIG. 12 is a perspective view of a main part of the lead frame carrying device of the second embodiment, FIG. 13 is a sectional view of the same part, FIG. 14 is a partial perspective view of a lead frame carrying device showing a conventional example, and FIG. It is the same part exploded perspective view. In the figure, 5 is a lead frame, 5a is a transport hole, 11 is a reciprocating drive mechanism, 26 is a support, 28 is an arm mounting plate, 29 is a connecting member, 32 is a transport arm, 36 is a transport pin, 60 is a guide rail, Reference numeral 64 is a rotary operation mechanism, and 76 is a mold device. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (4)

[Claims] 1. A lead frame carrying method for feeding a lead frame supported on a guide rail by a predetermined amount at a pitch, wherein the lead frame is arranged so as to be movable in a carrying direction and rotatable about an axis parallel to the carrying direction. A plurality of arm mounting plates, which are detachably and integrally supported by an installed support body, are coupled to each other in the transport direction by a coupling member and are detachably coupled together with the support body, so that each arm mounting plate is An inserting step of inserting the transport pins of the plurality of transport arms fixed in advance into the transport holes of the lead frame, and moving the arm mounting plate together with the support body by a predetermined amount in the transport direction in the transport hole insertion state of the transport pins. A feeding step, a detaching step of rotating the arm mounting plate together with the support body to detach the transport pin from the transport hole of the lead frame after the forward movement, and a transport hole of the transport pin. In the detached state, the lead frame is conveyed by sequentially repeating the returning step of moving the arm mounting plate together with the support body in the conveying direction by a predetermined amount and returning to the initial position. 2. A lead frame carrying device for feeding a lead frame supported by a guide rail by a predetermined amount at a pitch, wherein a plurality of carrying arms each having a carrying pin that can be inserted into and removed from a carrying hole of the lead frame are fixed in advance. Arm mounting plate, a connecting member that removably connects the arm mounting plate in the carrying direction, and an arm mounting plate connected by the connecting member in a detachable and integrally supporting manner in the carrying direction. A support body arranged so as to be movable forward and backward and rotatable about an axis parallel to the transport direction, and the support body is rotated to insert and remove the transport pin into and from the transport hole. The rotation operation mechanism and the arm mounting plate are moved forward together with the support body in the transport direction when the transport hole of the transport pin is inserted, and the arm mounting plate is supported when the transport hole of the transport pin is removed. Lead frame transport apparatus being characterized in that and a reciprocating drive mechanism for retracting movement with respect to the transporting direction with. 3. A lead frame carrying method for feeding lead frames supported by guide rails by a predetermined amount at a pitch, wherein a plurality of connecting members are detachably connected in the carrying direction and can be moved forward and backward in the carrying direction. An arm mounting plate that is detachably and integrally supported by a support body that is arranged in such a manner that the carrier pins that are respectively mounted on the arm mounting plates are fixed to the arm mounting plate, An insertion step of inserting the lead frame into the carrying hole of the lead frame by a movement; a feeding step of moving the arm mounting plate together with the support body by a predetermined amount in the carrying hole inserting state of the carrying pin; A step of separating the transport pin from the transport hole of the lead frame by moving the guide rail in the vertical direction, and a transport hole of the transport pin. The lead frame is conveyed by sequentially repeating the step of returning the arm mounting plate together with the support member by a predetermined amount in the conveying direction in the state of being separated from and returning it to the initial position. Transport method. 4. A lead frame transporting device for feeding a lead frame supported by a guide rail by a predetermined amount at a pitch, and an elevating operation mechanism for vertically operating the guide rail, and A transfer arm having a transfer pin that is inserted into and removed from the transfer hole of the lead frame in response to the vertical movement, a plurality of arm mounting plates that fix the transfer arms, and the arm mounting plate in the transfer direction. A connecting member that is detachably connected, and a support body that is removably integrally supported by the arm mounting plate connected by the connecting member and is arranged so as to be movable forward and backward in the transport direction, The arm mounting plate is moved forward together with the support in the transport direction when the transport pin is in the transport hole insertion state, and the arm mounting plate is moved when the transport pin is in the transport hole detached state. Lead frame transport apparatus comprising: the reciprocating drive mechanism retracting movement with respect to the transporting direction of the plate with the support body.