JP2013089743A - Frame transfer apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a frame transfer apparatus which eliminates the need for finely adjusting a position of a transfer rail even if the transfer rail, a frame transfer mechanism, and the like are exchanged for dealing with different kinds of lead frames.SOLUTION: When a frame transfer mechanism 130 moves in the transfer direction to transfer a lead frame 200 from a frame magazine 110 to the transfer rail 120, a carry-in correction member 132 engages with a frame holding recessed part 121 and moves thereby placing the transfer rail 120 to a proper position.

Description

  The present invention relates to a frame transport device that transports a lead frame from a frame magazine to a mold.

  Currently, there is a frame transport apparatus that carries lead frames before resin sealing one by one from a frame magazine into a frame aligning portion that is a transport rail, and transports the lead frames that have been transported to a mold.

  Such a frame transport device is, for example, a frame magazine that supports a rectangular lead frame so that the lead frame can be unloaded in the transport direction, a transport rail that holds a lead frame that is loaded from the frame magazine in the transport direction, and moves in the transport direction. And a frame carry-in mechanism for carrying the lead frame from the frame magazine to the carry rail, and a frame carry-out mechanism for carrying the lead frame held by the carry rail upward.

  Currently, there are various proposals as the above-described frame transport device. For example, in the frame transport apparatus 10 of Patent Document 1, the lead frame 12 in the magazine 11 is pushed out by a pusher 13 as shown in FIG. In this type of frame transport apparatus 10, when the lead frame 12 is supplied to the guide rails 14, 15, the distance in the short side length direction of the guide rails is changed to change the short side length direction of the lead frame on the transport unit 16. Perform positioning.

  Further, in the frame conveying device 20 of Patent Document 2, as shown in FIG. 22, when the chuck hand 21 is moved down at the chuck position E and the alignment position F, the chuck position E and the alignment position F are not moved. Then, the chuck hand 21 side is moved to perform positioning in the X and Y directions.

JP-A-11-168170 Japanese Patent Laid-Open No. 10-296779

  However, in the frame transport apparatuses 10 and 20 as described above, there are products in which each part can be exchanged in order to cope with a plurality of types of lead frames. However, in such a frame transport device, for example, when the transport rail holding the lead frame is replaced, it is necessary to finely adjust the position of the replaced transport rail to cope with wear and manufacturing errors due to deterioration over time. is there.

  The first frame transport device of the present invention holds a frame magazine that supports a substantially rectangular lead frame so that the lead frame can be transported in a transport direction that is substantially parallel to one side of the lead frame, and a lead frame transported from the frame magazine. A transport rail that moves in the transport direction and transports the lead frame from the frame magazine to the transport rail, and the transport rail can be rotated in a substantially horizontal direction and can be displaced in a direction orthogonal to the transport direction. A movable support mechanism that supports the position, a position correction unit that is formed in a straight line in the transfer direction of the transfer rail, and a frame correction mechanism that includes a recess or projection that engages with the position correction unit. And a carry-in correction member that is formed.

  Therefore, in the frame transport apparatus of the present invention, the substantially rectangular lead frame is supported so that the frame magazine can be carried out in the transport direction. The transport rail holds the lead frame unloaded from the frame magazine. The frame carry-in mechanism moves in the carrying direction to carry the lead frame from the frame magazine to the carrying rail. However, the transport rail is supported so that the movable support mechanism can rotate in the horizontal direction and can be displaced in the orthogonal direction perpendicular to the transport direction. A position correction unit is formed linearly in the transport direction of the transport rail. The carry-in correction member formed in the frame carry-in mechanism engages with the position correction unit and moves to place the transport rail at an appropriate position. For this reason, when the frame carry-in mechanism moves in the carrying direction and carries the lead frame from the frame magazine to the carrying rail, the carry-in correction member engages with the position correction unit and moves so that the carrying rail is placed at an appropriate position. Is done.

  The second frame transport device of the present invention includes a transport rail for holding a lead frame, a frame unloading mechanism for unloading the lead frame held by the transport rail, and a transport rail that can be rotated in the horizontal direction. A movable support mechanism that is displaceably supported in an orthogonal direction orthogonal to the direction, a carry-out guide portion formed of a convex portion or a concave portion formed on the transport rail, and a concave portion or a convex portion that engages with the carry-out guide portion. An unloading correction member formed in the frame unloading mechanism.

  Therefore, in the frame transport apparatus of the present invention, the lead frame is held by the transport rail. The frame carry-out mechanism carries out the lead frame held on the carrying rail upward. A movable support mechanism supports the transport rail so that the transport rail can be rotated in a horizontal direction and can be displaced in a direction orthogonal to the transport direction. However, the carry-out guide part is formed in the conveyance rail. The carry-out correction member of the frame carry-out mechanism is engaged with the carry-out guide portion of the carry frame, so that the carry rail is arranged at an appropriate position. For this reason, when the frame carry-out mechanism carries the lead frame held by the carry rail upward, the carry-out correction member of the frame carry-out mechanism engages with the carry-out guide portion of the carry frame, so that the lead frame is moved to the frame carry-out mechanism. It will be properly carried out.

  According to the frame transport device of the present invention, for example, even when the transport rail, the frame carry-in mechanism, or the like is exchanged to cope with different types of lead frames, it is not necessary to finely adjust the position of the transport rail.

It is a typical top view which shows the structure of the frame conveying apparatus of embodiment of this invention. It is a typical longitudinal rear view which shows the structure of a frame conveyance apparatus. It is a typical top view which shows the position of the frame carrying-out mechanism of a frame conveying apparatus. It is a typical vertical front view which shows structures, such as a frame carrying-out mechanism. It is a typical side view showing structures, such as a frame carrying-out mechanism. It is a typical top view which shows operation | movement of a frame conveying apparatus. It is a typical top view which shows operation | movement of a frame conveying apparatus. It is a typical top view which shows operation | movement of a frame conveying apparatus. It is a typical top view which shows the relationship between the structure of a movable support mechanism, and the inclination of a conveyance rail. It is a typical top view which shows the relationship between the structure of the movable support mechanism of one modification, and the inclination of a conveyance rail. It is a typical top view which shows the relationship between the structure of the movable support mechanism of another modification, and the inclination of a conveyance rail. It is a typical top view which shows the structure of the movable support mechanism of another modification. It is a typical top view which shows the structure of the movable support mechanism of another modification. It is a typical longitudinal section rear view showing the structure of the frame carrier of another modification. It is a typical longitudinal section rear view showing the structure of the frame carrier of another modification. It is a typical top view which shows the structure of the conveyance rail of another modification. It is a typical top view which shows the structure of the conveyance rail of another modification. It is a typical top view which shows the structure of the carrying-in correction member of another modification. It is a typical vertical front view which shows structures, such as a frame carrying-out mechanism of another modification. It is a typical vertical front view which shows structures, such as a frame carrying-out mechanism of another modification. It is a typical top view which shows the structure of the frame conveying apparatus of a 1st prior art example. It is a typical top view which shows the structure of the frame conveying apparatus of the 2nd prior art example.

  An embodiment of the present invention will be described below with reference to FIGS. As shown in FIGS. 1 and 2, the frame transport apparatus 100 according to the present embodiment includes a frame magazine 110, a transport rail 120, a grip feed 130 that is a frame carry-in mechanism, a movable support mechanism 140, and a position correction unit. Frame holding recess 121 and a carry-in correction pin 132 that is a carry-in correction member.

  The frame magazine 110 supports the substantially rectangular lead frame 200 so that the lead frame 200 can be carried out in a transport direction which is a longitudinal direction substantially parallel to one side of the lead frame 200. The conveyance rail 120 holds the lead frame 200 carried out from the frame magazine 110. The grip feed 130 moves in the longitudinal direction of the lead frame 200 and transports the lead frame 200 from the frame magazine 110 to the transport rail 120. The movable support mechanism 140 supports the transport rail so as to be rotatable in a substantially horizontal direction and displaceable in a direction orthogonal to the transport direction. The frame holding recess 121 includes a recess formed linearly in the transport direction of the transport rail 120. The carry-in correction pin 132 includes a convex portion that engages with the position correction portion and is formed on the grip feed 130.

  More specifically, as shown in FIG. 1, the lead frame 200 is held in a matrix with a plurality of semiconductor chips 220 sealed in a rectangular circuit board 210. The frame magazine 110 is detachably loaded on the upper surface of the elevator 111 and is conveyed in the vertical direction by the elevator 111. The elevator 111 is mounted on the upper surface of one end of the base plate 101. A plurality of lead frames 200 are inserted into the frame magazine 110 at predetermined intervals in the vertical direction.

  As shown in FIG. 2, a rail support 102 is fixed to the upper surface of the other end of the base plate 101, and a transport rail 120 is placed on the upper surface of the rail support 102. In the transport rail 120, a through hole 142 having an upper end 141 larger in diameter than the lower portion is formed in the vertical direction near both ends. Support pins 144 whose upper ends 143 are larger in diameter than the lower portions are passed through these through holes 142 and are fixed to the rail cradle 102.

  However, since a predetermined clearance is formed in the horizontal direction between the through hole 142 and the support pin 144, the transport rail 120 is moved by the movable support mechanism 140 including the through hole 142 and the support pin 144 described above. The upper surface of the is supported so as to be horizontally displaceable. On the upper surface of the transport rail 120, a frame holding recess 121 that supports the lead frame 200 to be loaded is formed in the longitudinal direction of the lead frame 200.

  A guide rail 105 is formed on the side of the base plate 101 in the longitudinal direction of the lead frame 200, and the grip feed 130 is linearly formed in the longitudinal direction of the lead frame 200 by the front and rear movement guide 131 by the frame holding recess 121. It is supported movably. The grip feed 130 transports the lead frame 200 from the frame magazine 110 to the transport rail 120.

  However, in the frame transport apparatus 100 of the present embodiment, two pairs of carry-in correction pins 132 are formed on the lower surface of the grip feed 130 so as to be separated in a direction orthogonal to the longitudinal direction of the lead frame 200. As shown in FIG. 2, these carry-in correction pins 132 engage with the upper part of the frame holding recess 121 that supports the lead frame 200 of the transport rail 120. Since the two pairs of carry-in correction pins 132 are spaced apart in the longitudinal direction of the lead frame 200 as described above, they function as elongated carry-in correction members in the longitudinal direction of the lead frame 200.

  For this reason, the grip feed 130 moves above the transport rail 120 in the longitudinal direction of the lead frame 200, so that the transport rail 120 that is displaceable and rotatable in the horizontal direction is connected to the frame magazine 110 in a straight line. Placed in position. A pair of triangular guide plates that are widened with respect to the grip feed 130 at the home position are provided at the front end of the transport rail 120 in order to facilitate the entry of the carry-in correction pin 132 of the grip feed 130 into the frame holding recess 121. 124 is attached.

  Further, as shown in FIGS. 4 and 5, the frame transport apparatus 100 according to the present embodiment grips the lead frame 200 held on the transport rail 120 and transports it upward, which is a transport hand 160. And a carry-out guide portion 125 formed of a convex portion or a concave portion formed on the conveyance rail 120 and a carry-out portion which is formed on the conveyance hand 160 and engages with the carry-out guide portion 125 to place the conveyance rail 120 at an appropriate position. And a correction member 161.

  More specifically, the carry-out guide part 125 is formed as a concave part whose upper part is expanded at the front end center and the side part center of the transport rail 120. The carry-out correction member 161 includes a shaft that engages with the carry-out guide portion 125.

  In order to satisfy the function, the transport hand 160 is provided with a pressing pad 162 that contacts the upper surface of the lead frame 200, a chuck claw 163 that grips the lead frame 200, and the like.

  In the configuration as described above, in the frame transport apparatus 100 of the present embodiment, the substantially rectangular lead frame 200 is supported so as to be able to be transported from the frame magazine 110 in the transport direction. The transport rail 120 holds the lead frame 200 unloaded from the frame magazine 110. The grip feed 130 moves in the longitudinal direction of the lead frame 200 and transports the lead frame 200 from the frame magazine 110 to the transport rail 120.

  However, since the movable support mechanism 140 supports the transport rail 120 so as to be displaceable in the horizontal direction, the transport rail 120 is not positioned linearly with respect to the frame magazine 110 as shown in FIG. May be.

  However, in order to carry the lead frame 200 from the frame magazine 110 to the conveyance rail 120 from such a state, when the grip feed 130 moves in the longitudinal direction above the conveyance rail 120, as shown in FIG. As the pin 132 moves linearly along the guide rail 150 while engaging the upper portion of the frame holding recess 121, the transport rail 120 is in a proper position that is linearly continuous with the frame magazine 110, as shown in FIG. Placed in. At this time, since the guide plate 124 that is widened forward is attached to the front end of the transport rail 120, the carry-in correction pin 132 is smoothly inserted into the frame holding recess 121.

  As shown in FIG. 8, the grip feed 130 moved to the rear end of the transport rail 120 holds the lead frame 200 supported by the frame magazine 110 and carries it into the transport rail 120. At this time, as described above, since the transport rail 120 is disposed at an appropriate position, the lead frame 200 is appropriately supported by the transport rail 120.

  Further, in the frame transport apparatus 100 of the present embodiment, as shown in FIGS. 3 to 4, the transport hand 160 unloads the lead frame 200 held on the transport rail 120 as described above. At this time, the carry-out correction member 161 of the carry hand 160 is engaged with the carry-out guide part 125 of the carry rail 120, so that the carry rail 120 is disposed at an appropriate position.

  For this reason, even when the transport hand 160 transports the lead frame 200 held on the transport rail 120 upward, the unloading correction member 161 of the transport hand 160 engages with the unloading guide portion 125 of the transport rail 120. The lead frame 200 is properly gripped by the transport hand 160 and carried out.

  In addition, although the above-mentioned delivery operation | movement has both the case where the conveyance hand 160 side goes up and down, and the case where the conveyance rail 120 side goes up and down, since the conveyance rail 120 becomes independent by the grip feed 130 returning to a standby position each time, the conveyance rail 120 It can also be applied to the case where the vertical axis moves up and down. After the lead frame 200 is transferred from the transport rail 120 to the transport hand 160, the lead frame 200 is transported to the next process.

  In the frame transport apparatus 100 according to the present embodiment, when the grip feed 130 moves in the longitudinal direction and transports the lead frame 200 from the frame magazine 110 to the transport rail 120 as described above, the carry-in correction pin 132 has the frame holding recess 121. The transport rail 120 can be disposed at an appropriate position by engaging and moving. For this reason, for example, even when the transport rail, the frame carry-in mechanism, or the like is exchanged to cope with different types of lead frames 200, the position of the transport rail 120 does not need to be finely adjusted.

  Furthermore, in the frame transport apparatus 100 of the present embodiment, when the frame unloading mechanism unloads the lead frame 200 held on the transport rail 120 upward, the unloading correction member of the frame unloading mechanism serves as the unloading guide portion of the transport frame. By engaging, the conveyance rail 120 can be disposed at an appropriate position. For this reason, for example, even when the transport rail 120, the grip feed 130, or the like is exchanged to cope with different types of lead frames 200, the position of the transport rail 120 need not be finely adjusted.

  Moreover, in the frame transport apparatus 100 of the present embodiment, the position of the transport rail 120 is corrected using a grip feed 130 that moves the lead frame 200 from the frame magazine 110 to the transport rail 120. For this reason, it is not necessary to add a dedicated mechanism or the like only for correcting the position of the transport rail 120, and the transport rail 120 can be arranged at an appropriate position with a simple structure.

  Furthermore, in the frame transport apparatus 100 of the present embodiment, a pair of carry-in correction pins 132 near both ends of the grip feed 130 are engaged with the pair of frame holding recesses 121 in the short direction of the lead frame 200 into which the lead frame 200 is inserted. By combining, the transport rail 120 is disposed at an appropriate position. For this reason, the conveyance rail 120 can be arranged at an appropriate position with a simple structure without modifying the conveyance rail 120.

  Further, in the frame transport apparatus 100 of the present embodiment, a pair of triangular guide plates 124 are attached to one end of the transport rail 120. For this reason, the carry-in correction pin 132 of the grip feed 130 can easily and smoothly enter the frame holding recess 121 of the transport rail 120 that can be displaced.

  Furthermore, in the frame conveying apparatus 100 of the present embodiment, two carry-in correction pins 132 are arranged in the longitudinal direction of the lead frame 200 in each of the vicinity of both ends of the grip feed 130. For this reason, the carry-in correction pin 132 can function as a shape that is long in the longitudinal direction of the lead frame 200, and the transport rail 120 can be more accurately disposed at an appropriate position.

  Further, in the frame transport apparatus 100 according to the present embodiment, when the transport hand 160 transports the lead frame 200 held by the transport rail 120 upward, the unloading correction member 161 of the transport hand 160 serves as a transport guide for the transport rail 120. Engage with portion 125. Therefore, it is not necessary to add a dedicated mechanism for correcting the position of the transport rail 120, and the lead frame 200 can be properly held with a simple structure.

  The present invention is not limited to the present embodiment, and various modifications are allowed without departing from the scope of the present invention. For example, the horizontal movable range of the transport rail 120 can be adjusted by the relationship between the through hole 142 and the support pin 144 of the movable support mechanism 140. As shown in FIG. 9, when the transport rail 120 is inclined to the angle θ1 by the support pin 144 having a predetermined diameter and the through hole 142 having a predetermined diameter, for example, if the through hole 142 has a large diameter as shown in FIG. The inclination angle θ2 of the transport rail 120 can be enlarged.

  Further, as shown in FIG. 11, the angle θ3 of the inclination of the transport rail 120 can be increased also by shortening the distance between the pair of through holes 142 arranged in the longitudinal direction of the lead frame 200 and the support pins 144. Can do. Furthermore, as shown in FIG. 12, the angle of inclination of the transport rail 120 can also be increased by forming the through-hole 142 in an elliptical shape that is elongated in the short direction of the lead frame 200. Further, as shown in FIG. 13, the angle of inclination of the transport rail 120 can also be increased by forming the through hole 142 in an arc shape.

  Furthermore, in the above embodiment, the pair of carry-in correction pins 132 in the vicinity of both ends of the grip feed 130 are engaged with the frame holding recess 121 of the transport rail 120 to illustrate that the transport rail 120 is disposed at an appropriate position. .

  However, as shown in FIG. 14, the transport rail 120 can also be disposed at an appropriate position by engaging the pair of carry-in correction members 133 of the grip feed 130 with the side surfaces of the transport rail 120 from the outside. Further, as shown in FIG. 15, even when the carry-in correction member 134, which is a recess in the lower surface opening of the grip feed 130, engages the side portion of the transport rail 120 as a convex portion, the transport rail 120 is arranged at an appropriate position. be able to.

  Furthermore, in the above embodiment, in order to smoothly insert the carry-in correction pin 132 of the grip feed 130 into the frame holding recess 121 of the transport rail 120, a pair of triangular guide plates 124 that are widened in the short direction are attached to the transport rail 120. Exemplified that

  However, if the movable range of the transport rail 120 is limited, as shown in FIG. 16, one end of the frame holding recess 121 may be formed in an expanded shape with a linear inclined surface. As shown, it may be formed in an expanded shape with an arcuate curved surface.

  Further, in the above embodiment, the carry-in correction pins 132 are arranged in the longitudinal direction of the lead frame 200 in the vicinity of both ends of the grip feed 130, so that the carry-in correction pins 132 are arranged in the lead frame 200. It illustrated that it can function as a shape long in the longitudinal direction. However, as shown in FIG. 18, one long and narrow carrying-in correction member 135 may be formed in the longitudinal direction of the lead frame 200 near each end of the grip feed 130.

  Moreover, in the said form, it has the carrying-out correction | amendment member 161 which arrange | positions the conveyance rail 120 in an appropriate position by engaging with the carrying-out guide part 125 formed in the conveyance hand 160, and the carrying-out guide part 125 of the conveyance rail 120 An example is shown in which the upper part is formed as a recessed part with the upper part expanded at the front end center and the side part center, and the carry-out correction member 161 is formed of a shaft that engages with the carry-out guide part 125.

  However, as shown in FIGS. 19 and 20, the lower end of the carry-out correction member 164 may be formed in a shape that expands downward, and the carry-out guide portion 126 may be formed as a convex portion that protrudes upward.

  Needless to say, the above-described embodiment and a plurality of modifications can be combined within a range in which the contents do not conflict with each other. Further, in the above-described embodiments and modifications, the structure of each part has been specifically described, but the structure and the like can be changed in various ways within a range that satisfies the present invention.

DESCRIPTION OF SYMBOLS 10 Frame conveyance apparatus 11 Magazine 12 Lead frame 13 Pusher 14, 15 Position correction part 16 Conveyance unit 17 Supply unit 100 Frame conveyance apparatus 101 Base plate 102 Rail receiving base 105 Guide rail 110 Frame magazine 111 Elevator 120 Conveyance rail 121 Frame holding recessed part 124 Guide Plate 125 Unloading guide part 126 Unloading guide part 130 Grip feed 131 Back and forth movement guide 132 Loading correction pin 133 Loading correction member 135 Loading correction member 140 Movable support mechanism 141 Upper end 142 Through hole 143 Upper end 144 Support pin 160 Transporting hand 161 Unloading correction member 162 Pad 163 Chuck claw 164 Unloading correction member 200 Lead frame 210 Circuit board 220 Integrated circuit θ1 Angle θ2 Angle θ3 Angle

Claims (5)

A frame magazine that supports a substantially rectangular lead frame so that the lead frame can be carried out in a conveying direction that is substantially parallel to one side of the lead frame;
A transport rail for holding the lead frame unloaded from the frame magazine;
A frame carry-in mechanism that moves in the transport direction and transports the lead frame from the frame magazine to the transport rail;
A movable support mechanism supporting the transport rail so as to be rotatable in a substantially horizontal direction and displaceable in an orthogonal direction substantially orthogonal to the transport direction;
A position correction unit comprising a convex part or a concave part formed linearly in the conveying direction of the conveying rail;
A carry-in correction member formed in the frame carry-in mechanism, which is formed of a concave portion or a convex portion that engages with the position correction portion;
A frame conveying device. The transport rail is formed with a frame holding recess for holding the lead frame,
The position correction unit is composed of a pair of side surfaces facing the frame holding recess,
The frame conveyance device according to claim 1, wherein the carry-in correction member is engaged with the pair of position correction units from the inside.   The frame carrying device according to claim 1, wherein the carry-in correction member is formed in an elongated shape in the carrying direction. A frame unloading mechanism for unloading the lead frame held by the transport rail upward;
A carry-out guide portion formed of a convex portion or a concave portion formed on the conveyance rail;
A carry-out correction member formed of a concave portion or a convex portion engaged with the carry-out guide portion and formed in the frame carry-out mechanism;
The frame transport device according to any one of claims 1 to 3, further comprising: A transport rail for holding the lead frame to be carried in;
A frame unloading mechanism for unloading the lead frame held by the transport rail upward;
A movable support mechanism that supports the transport rail so that the transport rail can be rotated in a horizontal direction and can be displaced in a direction orthogonal to the transport direction of the lead frame;
A carry-out guide portion formed of a convex portion or a concave portion formed on the conveyance rail;
A carry-out correction member formed of a concave portion or a convex portion engaged with the carry-out guide portion and formed in the frame carry-out mechanism;
A frame conveying device.

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