JP3734882B2 - Electronic component feeder - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic component supply device used in an electronic component mounting apparatus for mounting electronic components on a substrate.
[0002]
[Prior art]
As an electronic component supply device used for an electronic component mounting apparatus, a tape feeder is frequently used (for example, Japanese Patent Application Laid-Open No. 59-232499). The tape feeder is configured by providing a supply reel around which tape is wound at the rear part of the base, and by providing pitch feed means for the tape at the front part of the base, and by driving the pitch feed means, the tape is fed. While pitch-feeding the top surface of the base, the cover tape attached to the top surface of the tape is peeled off in the middle to expose the electronic components stored in the tape pocket, and this electronic component is transferred to the nozzle of the transfer head. Vacuum picked up and picked up and transferred to the substrate. In the present invention, the tape refers to an electronic component storage tape in which electronic components are stored one by one in a pocket formed at a pitch.
[0003]
The tape that has been emptied by picking up the electronic components is sent to the front of the base, and is finely cut and collected by a cutter unit equipped in the electronic component mounting apparatus. As the cutter unit, a unit having an upper blade that is a fixed blade and a lower blade that is a movable blade is often used. While passing an empty tape between the upper blade and the lower blade, the lower blade is used as the upper blade. By moving up and down, the tape is cut finely.
[0004]
[Problems to be solved by the invention]
However, since the above-mentioned conventional ones cut the empty tape by raising the lower blade (movable blade) relative to the upper blade (fixed blade), the empty tape is lifted up by the lower blade when the lower blade is raised. There was a problem that it was easy to wobble and thus it was difficult to cut the empty tape reliably.
[0005]
Also, when cutting the tape by raising the lower blade, the tape is lifted up by the lower blade, so the impact causes the electronic components remaining in the tape pocket to scatter to the periphery due to a pickup mistake of the transfer head. There was a problem that it could easily fall on the equipment and cause troubles on peripheral equipment.
[0006]
Accordingly, a first object of the present invention is to provide an electronic component supply apparatus that can reliably cut an empty tape after a transfer head picks up an electronic component. It is a second object of the present invention to provide an electronic component supply apparatus that can prevent electronic components remaining in a pocket of the tape from being scattered around.
[0007]
[Means for Solving the Problems]
According to the first aspect of the present invention, in this kind of electronic component supply apparatus including a tape feeder and a cutter unit, a cover member having an empty tape passage opening is provided at the front end of the base of the tape feeder, and the passage opening is provided. In the upper part of the transfer head, a sub-passage is formed in the transfer head to allow the remaining electronic components to stand up in the tape pocket and pass through the tape, and the empty tape that has passed through the passage is cut by the cutter unit. In addition, a wire spring extending from the cover member and mounted on a pin pivotally supported by the cover member between the pickup position of the electronic component by the transfer head and the cover member is disposed above the pressing member. extending therefrom press for pressing from above the tape by pressing the pressing member on the peripheral surface of the sprocket of the pitch feeding means resiliently by the spring force The provided member, and in the pressing member, is provided with a tunnel for passage of the electronic components remaining stands up in said pocket.
[0008]
According to a second aspect of the present invention, there is provided a pressing member that elastically presses the tape against the peripheral surface of the sprocket of the pitch feeding means between the pickup position of the electronic component by the transfer head and the cover member. The member is provided with a tunnel for allowing the remaining electronic components standing in the pocket to pass therethrough.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
In the first aspect of the invention, since the empty tape fed by the pitch feeding means is passed through the passage opening of the cover member, even if the lower blade is raised with respect to the upper blade in order to cut the empty tape, The tape is not lifted up by the lower blade, and the empty tape can be cut reliably, and the electronic components remaining in the pocket are not scattered around.
[0010]
According to the second aspect of the present invention, the electronic component that stands up in the pocket due to a pick-up mistake in the transfer head is reliably sent to the cutter unit without being scattered on the way, and the electronic component is recovered in the cutter unit. it can.
[0011]
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a side view of a tape feeder according to an embodiment of the present invention, FIG. 2 is a side view of the tape feeder and a cutter unit, FIG. 3 is a partial perspective view of the tape feeder, FIG. 4, FIG. 5, FIG. 7 is a partial side view of the tape feeder, FIG. 8 is a front view of the cover member of the tape feeder, FIG. 9 is a perspective view of the pressing member of the tape feeder, and FIG. 10 is a perspective view of the cover member of the tape feeder. is there.
[0012]
First, the overall structure of the tape feeder will be described. 1 and 2, the tape feeder 1 mainly includes a long plate-like base 2. A supply reel 4 as a tape supply unit is pivotally attached to the bracket 3 mounted on the rear portion of the base 2. A tape 8 is wound around the supply reel 4. Reference numeral 7 denotes an operation lever for attaching / detaching the tape feeder 1 to / from a mounting table (not shown).
[0013]
A frame 10 is erected in the center of the base 2. A winding reel 11 is pivotally attached to the frame 10. The take-up reel 11 takes up the cover tape 9 peeled off from the upper surface of the tape 8.
[0014]
2 and 3, pitch feed means for the tape 8 described below is provided at the front portion of the base 2. Reference numeral 20 denotes a sprocket, and reference numeral 21 denotes a claw wheel, which is coaxially attached to the rotary shaft 22. The tape 8 is tuned to the sprocket 20. In FIG. 3, the sprocket 20 and the claw wheel 21 are simply illustrated. A lever 23 is attached to the rotating shaft 22. In FIG. 2, a frame 24 is erected at the center of the base 2. Reference numeral 25 denotes a swing lever, which is pivotally attached to the frame 24 by a pin 26.
[0015]
The swing lever 25 and the lever 23 are connected by a rod 27 constituting a link mechanism. 28 and 29 are connecting pins. A spring 30 is stretched at the lower end of the swing lever 25, and the swing lever 25 is repelled counterclockwise by the spring force. Reference numeral 31 denotes a stopper pin that defines a counterclockwise rotation limit of the swing lever 25. A key-shaped lever 32 is pivotally attached to the frame 10. The tip of the lever 32 and the swing lever 25 are connected by a spring 33. Reference numeral 34 denotes a feed claw that is pivotally attached to the lever 23 and engages with the claw wheel 21. Reference numeral 35 denotes a claw that prevents the claw wheel 21 from rotating backward.
[0016]
In FIG. 2, reference numeral 36 denotes a pressing rod provided in an electronic component mounting apparatus (not shown). The pressing rod 36 moves downward to press the upper surface of the swing lever 25 and releases the pressing. Then, the swing lever 25 swings in the clockwise direction against the spring force of the spring 30 (arrow A). Then, the rod 27 reciprocates (arrow B), and the lever 23 swings (arrow C). Then, the sprocket 20 is driven by the feed claw 34 to rotate the pitch, and the tape 8 is pitch-fed forward (leftward) on the upper surface of the base 2.
[0017]
2 and 3, a horizontal rod 40 is connected to the upper end portion of the lever 23. A shutter 41 is rotatably connected to a rear end portion of the rod 40 by a pin 42. The shutter 41 is positioned on the upper surface of the tape 8 that is pitch-fed on the upper surface of the base 2, and the front end portion 41 a is a peeling claw. A presser piece 43 is detachably connected to the center of the rod 40. The presser piece 43 is springed downward by a spring 44 and presses the shutter 41 so that the shutter 41 does not float up.
[0018]
In FIG. 3, when the lever 23 swings in the arrow C direction, the rod 40 reciprocates in the arrow D direction, whereby the shutter 41 slides in the arrow E direction (pitch feed direction of the tape 8). In FIG. 2, when the swing lever 25 swings in the direction of arrow A, the lever 32 swings in the direction of arrow F, whereby the take-up reel 11 rotates in the direction of arrow G. The cover tape 9 adhered to the upper surface of the tape 8 is folded back by the peeling claw 41a and wound around the take-up reel 11, and the take-up reel 11 rotates in the direction of the arrow G, whereby the peeling claw 41a. Then, the tape is taken up on the take-up reel 11 while being peeled off from the tape 8. The shutter 41 reciprocates in the arrow direction E, but the shutter 41 is an electronic device in which the nozzle 13 of the transfer head 12 is accommodated in the pocket of the tape 8 in a state where the shutter 41 has advanced to the left as shown in FIG. The pickup position P (FIG. 2) for picking up the parts is covered, and electronic parts are prevented from jumping out of the pockets of the tape 8 unnecessarily.
[0019]
Further, as shown in FIG. 5, the pickup position P is opened by the interval t in a state where the shutter 41 is retracted. At this pickup position P, the cover tape 9 is folded back and peeled off by the peeling claw 41a, so that the electronic components in the pocket are exposed to the outside at the interval t, and the nozzle 13 of the transfer head 12 (FIG. 2). Pick up and transfer and mount on substrate (not shown).
[0020]
3 and 4, a box-shaped cover member 50 is provided at the front end of the base 2. A horizontal pin 51 is pivotally supported on the upper portion of the cover member 50. Reference numeral 52 denotes a long plate-like pressing member that extends upward from the cover member 50 to the sprocket 20. A wire spring 53 as a spring material is attached to the pin 51. The wire spring 53 extends above the presser member 52 and presses the presser member 52 by its spring force. Therefore, the pressing member 52 elastically presses the tape 8 traveling along the sprocket 20 against the peripheral surface of the sprocket 20 from above, thereby preventing the tape 8 from being detached from the sprocket 20. The pitch is fed to the
[0021]
As shown in FIG. 9, a tunnel 52a is formed in the holding member 52 along the longitudinal direction thereof. An electronic component 15 is accommodated in a pocket 14 formed at a pitch on the tape 8, and the nozzle 13 of the transfer head 12 picks up the electronic component 15 by vacuum suction at the pickup position P. However, there is a case where the electronic component 15 is picked up and left standing in the pocket 14 as shown in FIG. Such an electronic component 15 can pass through the tunnel 52a and be sent to the cutter unit (described later) 70 side.
[0022]
8 and 10, a horizontally long passage opening 54 is opened on the front surface of the cover member 50, and a sub passage opening 55 is formed on the upper portion of the passage opening 54. The empty tape 8 sent out from the sprocket 20 is sent out to the cutter unit 70 through the passage port 54. Further, the electronic component 15 erected in the pocket 14 is sent out to the cutter unit 70 through the sub passage port 55.
[0023]
Next, the pressing mechanism of the pressing member 52 will be described. 6 and 7 show a front end portion of the base 2 and show a surface on the opposite side to FIGS. 4 and 5. Reference numeral 60 denotes a key-shaped first lever that is pivotally attached to the pin 51 integrally with the pressing member 52. The first lever 60 is disposed on the side surface of the base 2. Reference numeral 61 denotes a key-shaped second lever that is pivotally attached to the side surface of the base 2 with a pin 62. The lower end 60a of the first lever 60 is horizontal, the upper end 61a of the second lever 61 is horizontal, and the upper end 61a is located on the upper surface of the lower end 60a. The second lever 61 is springed counterclockwise by the spring 62, whereby the upper end 61a is bulleted in the horizontal direction H, that is, the direction positioned on the lower end 60a. Reference numeral 63 denotes a stopper pin that defines a counterclockwise rotation limit of the second lever 61.
[0024]
Next, functions of the first lever 60, the second lever 61, and the spring 62 will be described with reference to FIG. FIG. 6 shows a normal state in which the tape 8 is pitch-fed. As described above, when the sprocket 20 constituting the pitch feeding means rotates by a pitch, the tape 8 is pitch-fed forward, and this pitch feeding needs to be performed stably and smoothly. Specifically, when the tape 8 is lifted off the sprocket 20 and separated, the tape 8 cannot be pitch-fed, so that the tape 8 is elastically pressed by the holding member 52 pressed by the wire spring 53 and the tape 8 is The sprocket 20 is not separated.
[0025]
However, in the conventional tape feeder, since the first lever 60 and the second lever 61 are not provided, the presser member 52 may be momentarily lifted in conjunction with the pitch feed of the tape 8. The trouble that the pitch 8 of the tape 8 cannot be separated due to the separation has occurred. As a countermeasure for preventing the occurrence of such trouble, it is conceivable to increase the spring force of the wire spring 53 and press the tape 8 against the sprocket 20 with the pressing member 52 with a stronger force. However, if such a measure is taken, the pressing member 52 is pressed against the tape 8 with an excessive force, which causes a problem that smooth pitch feeding of the tape 8 becomes difficult.
[0026]
Therefore, the tape feeder 1 solves this problem by providing the first lever 60, the second lever 61, the spring 62, and the like. Next, the reason will be described. In FIG. 6, the upper end 61 a of the second lever 61 is on the lower end 60 a of the first lever 60 and is urged in the horizontal direction (arrow H direction) by the spring force of the spring 62. Therefore, the vertical component force f applied from the upper end 61a to the lower end 60a is 0 or almost 0. This means that the spring force of the spring 62 does not act at all or almost in the direction in which the pressing member 52 (the pressing member 52 is integrated with the first lever 60) presses the tape 8 downward. On the other hand, since the upper end portion 61a is located on the lower end portion 60a, the first lever 60 rotates clockwise about the pin 51 (that is, the pressing member 52 integral with the first lever 60 rotates clockwise). Rotating in the direction of rising from the top) is firmly prevented.
[0027]
From the above, according to the tape feeder 1, it is possible to reliably prevent the pressing member 52 from rotating from the tape 8 by rotating in the clockwise direction during the pitch feeding, and as a result, the tape 8 can be prevented from being detached from the sprocket 20. Moreover, since the pressing member 52 is pressed against the tape 8 only by the spring force of the wire spring 53 (the spring force of the wire spring 53 is relatively small), the pressing member 52 is not strongly pressed against the tape 8 by an excessive force. The tape 8 can be smoothly pitch-fed by a relatively small pitch feed force of the pitch feed means.
[0028]
For example, when the tape 8 is exchanged, the tape 8 must be attached to and detached from the tape feeder 1. Next, the removal work of the tape 8 will be described. FIG. 7 shows a state in which the tape 8 is being removed from the sprocket 20. In this case, the end of the second lever 61 is pushed up with a fingertip, and the second lever 61 is rotated clockwise against the spring force of the spring 62. Then, as shown in the figure, the upper end 61a is separated from the lower end 60a.
[0029]
Thus, if the locked state of the 1st lever 60 by the 2nd lever 61 is cancelled | released, the 1st lever 60 will be rotated clockwise as shown in figure. Then, the pressing member 52 integral with the first lever 60 is also rotated in the same direction and separated from the upper surface of the tape 8. After the presser member 52 is moved upward in this way, the tape 8 is removed from the sprocket 20. When a new supply reel 4 is mounted on the bracket 3 and the tape 8 pulled out from the supply reel 4 is adjusted to the sprocket 20 and the state shown in FIG. 6 is obtained, the attaching / detaching operation of the tape 8 is completed.
[0030]
Next, the cutter unit 70 will be described. In FIG. 2, a cutter unit 70 is provided in front of the tape feeder 1. The cutter unit 70 is configured by housing an upper blade (fixed blade) 72 and a lower blade (movable blade) 73 in a case 71. The lower blade 73 is driven by driving means (not shown) and moves up and down with respect to the upper blade 72. The empty tape 8 fed from the tape feeder 1 is fed between the upper blade 72 and the lower blade 73, and is finely cut by the upper blade 72 and the lower blade 73 to become chips 8 '.
[0031]
The tape 8 is cut when the lower blade 73 is raised with respect to the upper blade 72. However, since the conventional tape feeder does not have the cover member 50, the tape 8 is lowered when the lower blade 73 is raised. The blade 73 swings upward so as to be lifted up (see the tape 8 indicated by a chain line in FIG. 2), and therefore the tape 8 cannot be cut reliably. However, as shown in FIGS. 8 and 10, in the tape feeder 1, since the tape 8 passes through the passage port 54 of the cover member 50, the tape 8 is not lifted by the lower blade 73 even if the lower blade 73 is raised. 2 holds the posture indicated by the solid line in FIG. Therefore, the tape 8 is surely cut. Further, the electronic component 15 standing up and remaining in the pocket 14 passes through the sub passage port 55 (FIG. 8) of the cover member 50, is sent into the case 71, and is reliably collected in the case 71. Of course, as described above, when the lower blade 73 is raised, the tape 8 is not lifted by the lower blade 73 and maintains the above posture, so that the electronic component 15 in the pocket 14 does not scatter to the periphery, and the cutter The unit 70 is reliably sent into the case 71 and collected.
[0032]
Next, means for eliminating pick-up mistakes due to magnetism and static electricity will be described. In FIG. 4, the cover tape 9 is peeled off by the peeling claw 41 a while pitching the tape 8, and the electronic component 15 in the pocket 14 exposed thereby is vacuum picked up by the nozzle 13 of the transfer head 12 and picked up. It is. However, if the member slidably contacting the tape 8 such as the shutter 41 or the pressing member 52 is a magnetic / defective conductor such as stainless steel, magnetic force or static electricity is generated due to the sliding contact of the tape 8 or peeling of the cover tape 9. As a result, the electronic component 15 in the pocket 14 is attracted to the cover tape 9 and moves to the take-up reel 11 together with the cover tape 9 (see the electronic component 15 indicated by a chain line in FIG. 4), and the pocket 14 is emptied. Therefore, the transfer head 12 cannot pick up the electronic component 15.
[0033]
Therefore, in this tape feeder 1, members that are in sliding contact with the tape 8, such as the shutter 41 and the pressing member 52, are formed of a nonmagnetic, good conductor having sufficient strength. As such a material, for example, phosphor bronze, a ceramic or plastic surface with conductive coating, or the like is used. As a result, generation of magnetic force is eliminated, and static electricity generated in the shutter 41 and the pressing member 52 is neutralized through conductive members such as the pressing piece 43, the cover member 50, and the pins 51 that are in contact therewith. Therefore, the trouble mentioned above can be solved.
[0034]
【The invention's effect】
According to the present invention, since the empty tape sent out by the pitch feeding means passes through the passage opening of the cover member, even if the lower blade is raised with respect to the upper blade in order to cut the empty tape, The tape is not lifted up by the lower blade, the empty tape can be cut reliably, and the electronic components remaining in the pocket are not scattered around.
[0035]
In addition, the electronic component that stands up in the pocket due to the pick-up of the transfer head and remains there can be reliably sent to the cutter unit without being scattered in the middle, and the electronic component can be collected in the cutter unit.
[Brief description of the drawings]
FIG. 1 is a side view of a tape feeder according to an embodiment of the present invention. FIG. 2 is a side view of a tape feeder and a cutter unit according to an embodiment of the present invention. Fig. 4 is a partial perspective view of the feeder. Fig. 4 is a partial side view of the tape feeder according to the embodiment of the invention. Fig. 5 is a partial side view of the tape feeder according to the embodiment of the invention. FIG. 7 is a partial side view of a tape feeder according to an embodiment of the present invention. FIG. 8 is a front view of a cover member of the tape feeder according to an embodiment of the present invention. FIG. 10 is a perspective view of a pressing member of a tape feeder according to an embodiment of the present invention. FIG. 10 is a perspective view of a cover member of the tape feeder according to an embodiment of the present invention.
DESCRIPTION OF SYMBOLS 1 Tape feeder 2 Base 4 Supply reel 8 Tape 9 Cover tape 11 Take-up reel 12 Transfer head 13 Nozzle 14 Pocket 15 Electronic component 20 Sprocket 21 Claw wheel 41 Shutter 41a Separation claw 50 Cover member 52 Pressing member 54 Passing port 55 Sub Passage port 60 First lever 61 Second lever 62 Spring 70 Cutter unit 72 Upper blade (fixed blade)
73 Lower blade (movable blade)

Claims (1)

A base and pitch feed means for pitch-feeding the tape fed from the tape supply unit at the front of the base forward on the base are stored in the tape pocket while pitch-feeding the tape. A tape feeder that picks up the electronic components that have been vacuum sucked onto the nozzle of the transfer head, an upper blade that is in front of the tape feeder and that cuts an empty tape fed from the tape feeder, and the upper blade An electronic component supply device comprising a cutter unit composed of a lower blade that moves up and down,
A cover member having an empty tape passage opening is provided at the front end of the base, and an electronic component that stands up in the pocket due to a pickup mistake by the transfer head passes above the passage opening. A sub-passage opening is formed, the empty tape that has passed through the passage opening is cut by the cutter unit, and between the pickup position of the electronic component by the transfer head and the cover member, from the cover member The tape is attached to the peripheral surface of the sprocket of the pitch feeding means by extending a wire spring mounted on a pin that is supported by the cover member and extending above the presser member and pressing the presser member by the spring force. A presser member that elastically presses from above is provided, and a tunnel for allowing the remaining electronic components standing in the pocket to pass therethrough is passed through the presser member. Electronic component supply device, characterized in that digit.

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