JP3966029B2 - Electronic component mounting apparatus and tape cutting apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic component mounting apparatus for mounting an electronic component on a substrate and a tape cutting device for cutting an empty tape discharged from a tape feeder that supplies the electronic component.
[0002]
[Prior art]
As a method for supplying an electronic component in an electronic component mounting apparatus, a method using a tape feeder is known. In this method, an electronic component such as a semiconductor chip held on a tape at a constant pitch is stored in a wound state on a supply reel, and the electronic component is transferred to the transfer head by unwinding the tape during mounting. Supply to the pickup position.
[0003]
Then, the empty tape after the electronic component is taken out is discharged from the tape feeder to the outside, and after being cut short, it is collected in a collection box. For this reason, the electronic component mounting apparatus is provided with a tape cutting mechanism for performing this blank tape cutting process. Conventionally, as this tape cutting mechanism, two cutting blades composed of a fixed blade and a movable blade are arranged opposite to each other, and an empty tape is sandwiched between the two blade edges by reciprocating the movable blade with respect to the fixed blade. A method of cutting is known.
[0004]
[Problems to be solved by the invention]
However, the conventional cutting method has various problems as described below. First, in order to successfully clip the empty tape with the two cutting blades as described above, it is essential that the two blade tips are accurately aligned, so the cutting blade and the cutting blade are held. Thus, the mechanism that reciprocates requires a considerable rigidity. For this reason, the cutting mechanism is increased in size and weight, and a large force is required to drive the movable blade. This causes an increase in the cost of the apparatus and generates a large noise during operation of the apparatus. As described above, the conventional tape cutting apparatus using the reciprocating cutting blade has a problem that it is difficult to perform low-noise tape cutting with a simple and lightweight mechanism.
[0005]
Accordingly, an object of the present invention is to provide an electronic component mounting apparatus and a tape cutting apparatus that can perform low-noise tape cutting with a simple and lightweight mechanism.
[0006]
[Means for Solving the Problems]
The electronic component mounting apparatus according to claim 1 is an electronic component mounting apparatus that picks up an electronic component from a component supply unit by a transfer head, and transfers and mounts the electronic component on a substrate, wherein a plurality of electronic components are arranged in the component supply unit. A tape feeder that feeds electronic components to the pick-up position by the transfer head by pitch-feeding the held tape, and is disposed below the front end in the tape feeding direction of these tape feeders and ejected from the tape feeder after taking out the electronic components A pair of rotations that rotate in a plane that is arranged so that the blade edges partially overlap and is substantially perpendicular to the feeding direction of the blank tape. A cutting blade portion having a blade, a rotary drive shaft extending upward from the rotary blade, which is upstream of the feeding direction of the empty tape, and A rotation drive source that rotates the rotation drive shaft; and a drive transmission mechanism that transmits the rotation of the rotation drive source to the rotation drive shaft and rotates the rotation blades in opposite directions to each other. The rotation transmission mechanism is coupled to the lower part of the shaft, and the rotation transmission mechanism transmits the rotation to the rotation drive shaft by a pulley coupled to the upper end of the rotation drive shaft . Two O-rings are mounted on the upper side, and one O-ring is mounted on the upper side of the other rotary blade in a state where the two O-rings are in contact with the outer peripheral end. tape Ru is cut by the rotary blade in a state sandwiched outer peripheral end portion of the O-ring and one O-ring of the two.
[0007]
3. The tape cutting device according to claim 2, wherein the electronic component mounting apparatus picks up an electronic component from the component supply unit by a transfer head, and transfers and mounts the electronic component on a substrate. This is a tape cutting device that cuts the empty tape that is discharged after taking out the electronic component from the tape feeder that feeds the electronic component to the pickup position by the transfer head by pitch feeding, and is arranged so that the blade edges partially overlap And a cutting blade portion having a pair of rotating blades rotating in a plane substantially orthogonal to the feeding direction of the empty tape, and extending upward from the rotating blade, which is upstream of the feeding direction of the empty tape. A rotation drive shaft, a rotation drive source for rotating the rotation drive shaft, and the rotation of the rotation drive source are transmitted to the rotation drive shaft so that the rotary blades are opposite to each other. The rotary blade is coupled to a lower portion of the rotary drive shaft, and the rotary transmission mechanism is rotated to the rotary drive shaft by a pulley coupled to an upper end portion of the rotary drive shaft. Of the pair of rotary blades, two O-rings are mounted on the upper side of one rotary blade, and one O-ring is mounted on the upper side of the other rotary blade with the two O-rings. the outer peripheral edge portion is mounted in abutting contact with, the air-tape Ru is cut by the rotary blade in a state sandwiched outer peripheral end portion of the O-ring and one O-ring of the two.
[0008]
According to the present invention, the tape cutting mechanism includes a cutting blade portion having a pair of rotary blades arranged so that the blade edges partially overlap and rotating in a plane substantially orthogonal to the feeding direction of the empty tape, and the rotary blade A rotary drive shaft that extends toward the upstream side of the empty tape feed direction, a rotary drive source that rotates the rotary drive shaft, and the rotation of the rotary drive source is transmitted to the rotary drive shaft and the rotary blades are reversed. By configuring with a drive transmission mechanism that rotates in the direction, a low-noise tape cutting unit can be realized at low cost with a simple and lightweight mechanism.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. 1 is a perspective view of an electronic component mounting apparatus according to an embodiment of the present invention, FIG. 2 is a partial side sectional view of the electronic component mounting apparatus according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention. FIG. 4 is a front view of the tape cutting unit of the electronic component mounting apparatus according to the embodiment of the present invention, and FIG. 5 is the electronic component mounting according to the embodiment of the present invention. FIG. 6 and FIG. 7 are operation explanatory views of the tape cutting unit of the electronic component mounting apparatus according to the embodiment of the present invention.
[0010]
First, the structure of the electronic component mounting apparatus will be described with reference to FIGS. In FIG. 1, a transport path 2 is disposed on a base 1, and the transport path 2 transports a substrate 3 and positions it at an electronic component mounting position. A component supply unit 4 is disposed on the side of the conveyance path 2. A plurality of tape feeders 5 are arranged in the component supply unit 4 in the substrate conveyance direction. The tape feeder 5 feeds the electronic component to the pickup position by the transfer head 6 by pitch-feeding the tape holding the electronic component.
[0011]
The transfer head 6 is provided with a suction nozzle 6a for sucking and holding electronic components, and is moved in the horizontal direction by an X-axis table 7 (see FIG. 2) and a Y-axis table (not shown), and the tape feeder 5 is moved by the suction nozzle 6a. The electronic component is taken out from the pick-up position and transferred and mounted on the substrate 3. A camera 9 is arranged between the component supply unit 4 and the conveyance path 2, and the transfer head 6 moves above the camera 9 to pick up an image of the electronic component held by the transfer head 6 from below. . By recognizing the imaging result, the position of the electronic component is recognized. When the electronic component is mounted on the substrate 3 by the transfer head 6, the mounting position is corrected based on the position recognition result.
[0012]
Next, the component supply unit 4 will be described. The component supply unit 4 includes a feeder base 4a, and a plurality of tape feeders 5 are mounted on the feeder base 4a. A chute 10 is provided in front of the front end of the tape feeder 5 (on the side of the conveyance path 2 in FIG. 1) to guide the empty tape after the electronic components are taken out.
[0013]
As shown in FIG. 2, the chute 10 is a duct having a shape having a wide opening on the upper surface and the width being narrowed downward. The tape feeder 5 mounted on the feeder base 4a is provided with a supply reel 5b for storing a tape holding electronic components in a wound state. The tape drawn from the supply reel 5b is directed forward in the main body 5a. Be guided. The empty tape T after the electronic component is taken out by the suction nozzle 6a of the transfer head 6 at the pickup position is discharged from the tape feeder 5 and guided downward in the chute 10.
[0014]
A tape cutting unit 11 is disposed on the exit side of the lower portion of the chute 10. The tape cutting unit 11 cuts the empty tape T guided by the chute 10 into strips. A recovery box 8 is provided below the tape cutting unit 11, and the strips of the empty tape T cut by the tape cutting unit 11 are dropped and recovered in the recovery box 8 (see FIG. 1).
[0015]
Next, the structure of the tape cutting unit 11 will be described with reference to FIGS. 3, 4, and 5. 3 and 5, the tape cutting unit 11 is held by a base plate 12 arranged in the substrate transport direction. As shown in FIG. 5, a guide rail 13 is fixed to the base plate 12 in the horizontal direction, and a cutting blade unit 15 (cutting blade portion) for cutting the empty tape T is attached to the slider 14 fitted to the guide rail 13. A U-shaped frame member 15a to be held is coupled. A motor 16 is fixed to the base plate 12 via a bracket 16a, and a sprocket 17A is coupled to the output shaft of the motor 16.
[0016]
As shown in FIG. 3, an idler sprocket 17B is disposed at the other end of the base plate 12, and a chain 18 is tuned to the sprockets 17A and 17B. As shown in FIGS. 4 and 5, a connecting plate 19 is connected to the chain 18, and the connecting plate 19 is connected to a frame member 15a via a pin fulcrum 19a. When the motor 16 is driven to rotate, the chain 18 moves linearly in the direction of arrow a as shown in FIG. 6A, whereby the frame member 15a is guided by the guide rail 13 and moves in the horizontal direction.
[0017]
In the movement of the frame member 15a, as shown in FIG. 6B, when the connecting plate 19 reaches the position of the sprocket 17B, the connecting plate 19 is moved along the outer periphery of the sprocket 17B. Rotate. During this rotational movement, the frame member 15a is in a stopped state.
[0018]
As the motor 16 continues to rotate and the chain 18 further moves, the connecting plate 19 moves to the lower stage side of the chain 18 and moves in the direction of arrow b as shown in FIG. 6C. That is, by continuing to rotate the motor 16 in a certain direction, the frame member 15a is guided by the guide rail 13 and reciprocates. Therefore, the cutting blade portion 15 moves in the arrangement direction of the tape feeders 5 and cuts the empty tapes T discharged from the tape feeders 5.
[0019]
The motor 16, the sprocket 17 </ b> A, and the chain 18 are a reciprocating drive mechanism that reciprocates the cutting blade 15 in the arrangement direction (substrate transport direction) of the tape feeder 5. With such a configuration, there is no need to perform forward / reverse rotation control of the motor 16, the cutting blade portion 15 can be continuously reciprocated only by rotation in one direction, and the motor control system can be simplified. .
[0020]
Next, the cutting blade portion 15 will be described. The cutting blade portion 15 has a configuration in which a pair of rotary blade units 20A and 20B are held on two side walls constituting the frame member 15a, and the rotary blade units 20A and 20B are linearly formed from above to below. Are arranged in parallel with a chute 10 extending therebetween. Rotation drive shafts 21A and 21B are pivotally supported on shaft holding portions 22A and 22B arranged to be fixed to the frame member 15a with the chute 10 interposed therebetween, and rotary blades are respectively provided below the rotation drive shafts 21A and 21B. 26A and 26B are connected.
[0021]
Here, the rotary blades 26A and 26B are arranged so that the blade edges partially overlap, and are substantially orthogonal to the feed direction of the empty tape T that is fed downward in the chute 10 by being driven by a rotational drive source described later. Rotate in the plane you want. When the rotary blades 26A and 26B are rotated with the empty tape T sandwiched between the blade edges of the two rotary blades 26A and 26B, the empty tape T is cut.
[0022]
Two O-rings 28 are mounted on the upper side of the rotary blade 26A, and one O-ring 28 is mounted on the upper side of the rotary blade 26B with the O-ring 28 on the rotary blade 26A side and the outer peripheral end in contact with each other. The empty tape T guided by the chute 10 is cut by the rotary blades 26 </ b> A and 26 </ b> B while being sandwiched between the outer peripheral ends of these O-rings 28.
[0023]
One rotary blade 26A is biased upward by a spring 27 so that the blade edge of the rotary blade 26A is always pressed against the blade edge of the rotary blade 26B so that a gap between the blade edges does not occur. Thereby, it is not necessary to adjust the gap of the blade edge, and even when the tape biting occurs at the time of cutting, the rotating blade 26A is pushed down, so that problems such as clogging of the tape scrap due to the biting do not occur.
[0024]
Next, a rotation drive mechanism that rotates the rotary blades 26A and 26B will be described. The rotary drive shafts 21A and 21B are arranged to extend from the rotary blades 26A and 26B toward the upstream side in the feeding direction of the empty tape T (the direction opposite to the arrow c). A driving pulley 23 is coupled to the upper end portion.
[0025]
As shown in FIGS. 3 and 4, idler pulleys 23 a are fixedly disposed at both ends of the cutting blade portion 15 in the horizontal movement direction so as to correspond to the rotary blade units 20 </ b> A and 20 </ b> B. Similar idler pulleys 23 a are disposed on both sides of the pulley 23 in the units 20 </ b> A and 20 </ b> B.
[0026]
An endless belt 24 is tuned around the two pulleys 23a at both ends, the pulleys 23a of the rotary blade units 20A and 20B, and the driving pulley 23 (see FIG. 7), and the endless belt 24 is a coupling member. 25 is coupled to the frame member 15a via the shaft holding portions 22A and 22B.
[0027]
By rotating the motor 16, the frame member 15a moves in the horizontal direction (arrows d and e) as shown in FIG. Thereby, the endless belt 24 is pulled and moved in the directions of the arrows f and g by the frame member 15a, and the pulley 23 is moved in the directions of the arrows h and i together with the frame member 15a. At this time, the inner endless belt 24 moves in the direction opposite to the arrows f and g (arrows j and k).
[0028]
Therefore, the pulley 23 moves relative to the endless belt 24 at a speed twice as fast as the moving speed of the frame member 15a. As a result of this relative movement, the pulleys 23 of the rotary blade units 20A and 20B are rotated in the opposite directions (arrows 1 and m), respectively, so that the rotary blades 26A and 26B coupled to the rotary drive shafts 21A and 21B are similarly operated. Rotate.
[0029]
That is, the motor 16 is a rotational drive source that rotates the rotational drive shafts 21A and 21B, and the sprocket 17A, the chain 18, the endless belt 24, the coupling member 25, and the pulley 23 rotate the motor 16 that is the rotational drive source. This is a drive transmission mechanism that transmits to the rotary drive shafts 21A and 21B and rotates the rotary blades 26A and 26B in opposite directions.
[0030]
The pair of rotary blade units 20A and 20B are driven in the horizontal direction by the horizontal movement of the cutting blade portion 15, and the endless belt 24 and the pulley 23 are driven by the horizontal movement of the cutting blade portion 15 as a driving source. It is a rotary blade drive mechanism that rotates 26A and 26B in opposite directions. By using the endless belt 24 that does not require lubrication for driving the rotary blades 26A and 26B as described above, maintenance work is simplified and noise reduction is realized.
[0031]
In the configuration of the cutting blade portion 15, the drive mechanism portion that rotationally drives the rotary blades 26 </ b> A and 26 </ b> B is located above the blade tip position that cuts the empty tape T, so that the empty tape T is cut into strips. The troubles caused by the tape cutting scraps being bitten into the drive mechanism section are prevented. Further, since the rotary blades 26A and 26B are coupled to the lower end portions of the rotary drive shafts 21A and 21B, the replacement work of the rotary blades 26A and 26B can be easily performed.
[0032]
As described above, the tape cutting unit is replaced with the conventional movable blade / fixed blade push-off method, and the rotary blade method is adopted. Can be realized.
[0033]
【The invention's effect】
According to the present invention, the tape cutting mechanism includes a cutting blade portion having a pair of rotary blades arranged so that the blade edges partially overlap and rotating in a plane substantially orthogonal to the feeding direction of the empty tape, and the rotary blade A rotary drive shaft that extends toward the upstream side of the empty tape feed direction, a rotary drive source that rotates the rotary drive shaft, and the rotation of the rotary drive source is transmitted to the rotary drive shaft and the rotary blades are reversed. Since it is configured with a drive transmission mechanism that rotates in the direction, a low-noise tape cutting unit can be realized at low cost with a simple and lightweight mechanism.
[Brief description of the drawings]
FIG. 1 is a perspective view of an electronic component mounting apparatus according to an embodiment of the present invention. FIG. 2 is a partial side sectional view of the electronic component mounting apparatus according to an embodiment of the present invention. FIG. 4 is a plan view of a tape cutting unit of an electronic component mounting apparatus according to an embodiment of the present invention. FIG. 5 is an electronic component according to an embodiment of the present invention. FIG. 6 is a side view of the tape cutting unit of the mounting apparatus. FIG. 6 is an operation explanatory view of the tape cutting unit of the electronic component mounting apparatus according to the embodiment of the invention. Explanation of operation of tape cutting unit [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Base 3 Board | substrate 4 Component supply part 5 Tape feeder 6 Transfer head 11 Tape cutting unit 15 Cutting blade unit (cutting blade part)
16 Motor 17A, 17B Sprocket 18 Chain 20A, 20B Rotary blade unit 21A, 21B Rotary drive shaft 23 Pulley 24 Endless belt 26A, 26B Rotary blade

Claims (2)

An electronic component mounting apparatus that picks up an electronic component from a component supply unit by a transfer head and transfers and mounts the electronic component on a substrate, wherein the electronic component is arranged by pitch feeding a plurality of tapes arranged on the component supply unit and holding the electronic component. A tape feeder that feeds the tape to the pickup position by the transfer head, and a tape cutting means that is disposed below the front end of the tape feeder in the tape feeding direction and cuts the empty tape that is discharged from the tape feeder after the electronic components are taken out The tape cutting means has a pair of rotary blades arranged so that the blade edges partially overlap and rotate in a plane substantially perpendicular to the feeding direction of the empty tape, and the rotary blade A rotary drive shaft extending upward, which is upstream of the empty tape feed direction, and a rotary drive source for rotating the rotary drive shaft The rotation of the rotary driving source is transmitted to the rotary drive shaft and a drive transmission mechanism that rotates in the opposite direction to the rotary blade to each other,
The rotary blade is coupled to a lower portion of the rotary drive shaft, and the rotation transmission mechanism transmits rotation to the rotary drive shaft by a pulley coupled to an upper end portion of the rotary drive shaft, and the pair of rotary blades Two O-rings are mounted on the upper side of one of the rotary blades, and one O-ring is placed on the upper side of the other rotary blade with the two O-rings in contact with the outer peripheral end. is mounted, the air-tape the electronic component mounting apparatus according to claim Rukoto cut by the rotary blade in a state sandwiched outer peripheral end portion of the O-ring and one O-ring of the two. In an electronic component mounting apparatus that picks up an electronic component from a component supply unit with a transfer head and transfers and mounts the electronic component on a substrate, the electronic component is transferred by pitch-feeding a plurality of tapes arranged on the component supply unit and holding the electronic component. A tape cutting device for cutting an empty tape discharged after taking out an electronic component from a tape feeder supplied to a pickup position by a mounting head, which is arranged so that the blade edges partially overlap with each other and substantially orthogonal to the feeding direction of the empty tape A cutting blade portion having a pair of rotating blades that rotate within a plane that rotates, a rotary drive shaft extending upward from the rotary blade, which is upstream in the feed direction of the empty tape, and the rotary drive shaft A rotation drive source for rotation, and a drive transmission mechanism for transmitting rotation of the rotation drive source to the rotation drive shaft and rotating the rotary blades in opposite directions. ,
The rotary blade is coupled to a lower portion of the rotary drive shaft, and the rotation transmission mechanism transmits rotation to the rotary drive shaft by a pulley coupled to an upper end portion of the rotary drive shaft, and the pair of rotary blades Two O-rings are mounted on the upper side of one of the rotary blades, and one O-ring is placed on the upper side of the other rotary blade with the two O-rings in contact with the outer peripheral end. The empty tape is sandwiched between the outer peripheral ends of the two O-rings and one O-ring.
Tape cutting apparatus according to claim Rukoto cut by the rotary blade.

Images