JP3298566B2 - Adjustment mechanism of chip pickup position of tape feeder and method of adjusting chip pickup position - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adjustment mechanism of a chip pickup position of a tape feeder for supplying chips mounted on a substrate and a method of adjusting a chip pickup position in an electronic component mounting apparatus.

[0002]

2. Description of the Related Art In an electronic component mounting apparatus, an electronic component (hereinafter, referred to as "chip") provided in a parts feeder is vacuum-adsorbed to a nozzle of a transfer head, picked up, and transferred and mounted on a substrate. I have. There are various types of parts feeders, such as a tape feeder, tube feeder, and tray feeder.The tape feeder is particularly popular because it can easily supply chips at high speed and in large quantities. Used.

As an electronic component mounting apparatus using a tape feeder, for example, an apparatus described in Japanese Patent Application Laid-Open No. 2-271798 is generally used. In this device, a tape having a desired type of chip is provided by arranging a large number of tape feeders on a table of a component supply table and reciprocating the table at a high speed in a lateral direction on the component supply table by a feed screw mechanism. The feeder is stopped at the pickup position, the chip is vacuum-adsorbed to the nozzle of the transfer head, picked up, and transferred and mounted on the substrate.

[0004]

In recent years, chips have tended to be gradually reduced in size. At present, some chips have a side length of 0.5 mm or less. In the case of such a small chip, even if the pick-up position of the chip provided on the tape feeder is slightly deviated, the nozzle cannot vacuum-suck the chip and a pick-up error occurs. The cause of this pickup position is an error in processing and assembling the tape feeder.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a mechanism for adjusting a chip pickup position of a tape feeder and a method for adjusting the chip pickup position, which can eliminate a deviation of a pickup position caused by an error in processing and assembling a tape feeder.

[0006]

For this purpose, a tape feeder adjusting mechanism for a tape feeder according to the present invention is provided with a tape supply section at one end and a tape supply section from the tape supply section at the other end. A tape feeder having a base provided with a pitch feed unit for feeding the pitch, wherein the eccentric pin is rotated so that the base can be swung horizontally about the pin, and a jig for mounting the tape feeder. And a camera for observing a target at the tip of the tape feeder mounted on the jig, and a monitor television for displaying an image of the target.

The present invention also provides a base provided with a tape feeder at one end and a pitch feeder for feeding the tape supplied from the tape feeder at the other end. This is a method of adjusting the chip pickup position of a tape feeder in which the base can be swung horizontally about a pin by rotating the tape feeder, and the tape feeder is mounted on a jig and positioned. The target at the end of the target is observed with a camera, and the image is displayed on a monitor television, and the base is swung horizontally around the pin by the eccentric pin to correct the positional deviation of the target.

Preferably, the tape feeder is pressed against a stopper provided on the jig, positioned and mounted on the jig, and in this state, the camera is used to observe the target.

More preferably, the tape feeder has
A toggle mechanism is provided, and by rotating a lever of the toggle mechanism, the tape feeder is pressed against the stopper, and the tape feeder is positioned and mounted on the jig.

In the above configuration, the tape feeder is mounted on a jig, and in this state, the target at the tip of the tape feeder is observed with a camera, and the image is displayed on a monitor television. Then, while watching the monitor television, the operator adjusts the position of the base by rotating the eccentric pin to swing the base in the horizontal direction so that the chip is picked up at the correct pickup position.

[0011]

Next, an embodiment of the present invention will be described with reference to the drawings. 1 is a perspective view of a tape feeder according to an embodiment of the present invention, FIG. 2 is a side view of a position adjusting device of the base, FIG. 3 is a partially cutaway side view of the tape feeder, and FIG. It is a fragmentary sectional view of a stand part and an eccentric pin.

The position adjusting device for the base shown in FIG. 2 is for adjusting the position of the base before setting the tape feeder on the table device of the electronic component mounting apparatus.
First, the structure of the tape feeder 1 will be described with reference to FIGS. Reference numeral 2 denotes a rod-shaped base, which supports the base 3 from below. The base is fixed on a table of a component supply table of the electronic component mounting apparatus. The base 3 has a long plate shape, and a holder 5 for holding the supply reel 4 is mounted at a rear portion thereof. Supply reel 4
Is wound with a tape. Although not shown, pockets are formed on the tape with a pitch, and chips are stored in the pockets. Reference numeral 6 denotes a handle formed integrally with the holder 5, and an operator holds the tape feeder 1 by holding the handle 6.

At the front of the base 3, there is provided a pitch feeder 7 composed of a sprocket, a ratchet wheel or the like.
The tape fed from the supply reel 4 is fed by the pitch feeder 7 while sliding on the upper surface of the base 3. Reference numeral 8 denotes a take-up reel provided at the center of the upper surface of the base 3. The tape fed out from the supply reel 4 slides on the base 3, and in the middle thereof, the cover tape attached to the upper surface of the tape is peeled off from the tape and wound up on the take-up reel 8. The chips in the pockets that are exposed due to the peeling of the cover tape are vacuum-sucked by the nozzles of the transfer head and picked up. The rotation mechanism of the pitch feed unit 7 and the take-up reel 8,
Well-known mechanisms such as a cover tape peeling mechanism are omitted in the figure.

Next, a mechanism for attaching and detaching the tape feeder 1 to and from the jig of the base position adjusting device will be described.
1 and 2, reference numeral 10 denotes a table table,
A plate-shaped jig 11 is provided on the upper surface. A stopper 12 is provided at the front end of the jig 11. The inner surface of the stopper 12 is a tapered surface 13. The distal end of the base 2 is wedge-shaped, and the distal end of the base 2 is positioned on the jig 11 by pressing the tapered surface 2 a, which is the distal end, against the tapered surface 13 of the stopper 12. Have been. Reference numeral 14 denotes a rib protruding from the jig 11. The rib 14 regulates the position of the tape feeder 1 in the horizontal direction. These jig 11, stopper 12, rib 14
Has the same structure as the table mounted on the component supply table of the electronic component mounting apparatus.

2 and 3, a lever 9 is provided upright at the rear of the base 3. As shown in FIG. The lever 9 is rotatable about the pin 20 in the front-rear direction N. A link member 22 is pivotally attached to the lower end of the lever 9 via a pin 21, and a clamp claw 24 is pivotally attached to the link member 22 via a pin 23. Clamp claw 24 is pin 25
To the base 3. An opening 26 into which the clamp claw 24 enters is formed at a rear portion of the jig 11. As shown in FIGS. 2 and 3, in a state where the lever 9 is tilted forward (to the right), the clamp claw 24 is
In the direction in which the tapered inner surface 27 is pressed rearward (to the left), and the tapered surface 2a at the tip of the base 2 is
The tape unit 1 is firmly fixed on the jig 11 by pressing against the second tapered surface 13. When the lever 9 is tilted backward (to the left), the clamp claw 24 rotates upward and escapes from the opening 26, and the tape feeder 1 is easily moved to the jig 1.
Can be removed from 1. By pressing the tapered surface 2a at the tip of the base 2 against the tapered surface 13 of the stopper 12 with the clamper claw 24, the tape feeder 1 is firmly pressed onto the jig 11 and fixed. The pins 20, 21, 23 and the link member 22 constitute a toggle mechanism, so that the clamp claw 24 is firmly pressed against the tapered inner surface 27 with a strong pressing force.

In FIG. 1 and FIG.
Is provided with an arm 30. A camera 31 is held at the tip of the arm 30. This camera 31
Observes the vicinity of the tip of the tape feeder 1 on the jig 11 (the vicinity of the chip pickup position) from above. 32
Denotes a monitor television, which displays an image captured by the camera 31.

Next, a position adjusting mechanism of the base 3 will be described with reference to FIGS. In FIG. 3, the base 2 and the base 3
Are connected by a pin 41, a screw 42, and an eccentric pin 43. The pin 41 is located near the lever 9 and connects the base 3 to the base 2 so as to be horizontally rotatable about the pin 41.
A screw 42 connects the base 2 and the center of the base 3. The insertion hole 44 of the base 3 into which the screw 42 is inserted is
The diameter of the screw 42 is slightly larger than the diameter of the screw 42, and the screw 42 allows the base 3 to rotate slightly horizontally about the pin 41. The eccentric pin 43 is inserted into a long hole 45 formed in the base 2 (see also FIG. 4). 46 is a rotation axis of the eccentric pin 43.

Openings 51, 52, 53 for exposing the pins 41, screws 42, and the head of the rotating shaft 46 are provided on the base 3.
A pin 41, a screw 42, and a rotating shaft 46 can be rotated by inserting the tip of a driver such as a screwdriver from these openings 51, 52, 53. As shown in FIG. 3, when the screw 42 connecting the base 2 and the base 3 is slightly loosened, the tip of the driver is inserted into the opening 53 and the rotary shaft 46 is turned. Rotates in the long hole 45. Then, the base 3 swings slightly on the base 2 about the pins 41 in the horizontal direction.

The tape feeder 1 and the like are configured as described above. Next, the operation of adjusting the mounting position of the base 3 will be described. First, as shown in FIGS. 1 and 2,
The tape feeder 1 is mounted on the jig 11. This mounting is performed as follows. That is, in FIG. 2, the operator holds the tape feeder 1 in his hand and attaches the tip of the base 2 to the jig 1.
1 and slide the jig 11 forward (toward the stopper 12 side) while guiding the tape feeder 1 to the rib 14 (FIG. 1) while holding the handle 6, and the tapered surface 2 a ( 3 is pressed against the tapered surface 13 of the stopper 12. Next, when the lever 9 is tilted forward, the clamp claw 24 is engaged with the tapered surface 27 of the opening 26 as shown in FIGS. Thus, the tape feeder 1 is securely mounted on the jig 11.

In this mounted state, the vicinity of the tip of the tape feeder 1 is in the field of view of the camera 31 as shown in FIG. Then, the target on the tape feeder 1 side is observed by the camera 31 and the image is displayed on the monitor television 32. In FIG. 2, T is a target displayed on the screen of the monitor television 32. As the target T, any characteristic point of the tape feeder 1 may be used. For example, a sprocket pin for feeding a tape pitch, which is provided on a peripheral surface of a sprocket constituting the pitch feed unit 7, is selected.

In the image of the monitor television 32 shown in FIG.
The target T is displaced from the reference coordinate system (X, Y) in the Y direction (the direction orthogonal to the longitudinal direction of the base 3) by the position ΔY. Therefore, the operator corrects the positional deviation ΔY by turning the rotation shaft 46 of the eccentric pin 43 by the driver and swinging the base 3 in the horizontal direction about the pin 41. That is, if the target T is matched with the X axis on the screen of the monitor television 32 in FIG. 2, this positional deviation ΔY will be corrected.

After the positional deviation ΔY has been corrected as described above, the lever 9 is tilted forward to release the clamp claw 24 from the opening 26, and the grip 6 is held to move the tape feeder 1 on the jig 11. Slide it out from it.
Subsequently, the same adjustment is performed for the other tape feeders 1. Note that, on the screen of the monitor television 32 shown in FIG. 2, the target T also has a displacement in the X direction (longitudinal direction of the base 3), but since the correction of the displacement is not directly related to the present invention, the description thereof will be omitted. Omitted.

The tape feeder 1 whose position of the base 3 has been adjusted as described above is used by being set on a component supply table of an electronic component mounting apparatus.
Has been adjusted, the deviation of the chip pick-up position in the Y direction due to the error in processing and assembling the tape feeder has been eliminated. Therefore, it is possible to reliably pick up the chip by vacuum suction using the nozzle of the transfer head. it can.

[0024]

As described above, according to the present invention, the operator swings the base in the horizontal direction while watching the target at the tip of the tape feeder displayed on the monitor television. Can be adjusted.
Therefore, when the tape feeder is mounted on the electronic component mounting apparatus and the chip is mounted on the board, the chip pick-up position can be eliminated, and the chip can be reliably vacuum-adsorbed to the nozzle of the transfer head and picked up. Can be transported and mounted.

[Brief description of the drawings]

FIG. 1 is a perspective view of a tape feeder according to an embodiment of the present invention.

FIG. 2 is a side view of the base position adjusting device according to the embodiment of the present invention;

FIG. 3 is a partially cutaway side view of the tape feeder according to the embodiment of the present invention;

FIG. 4 is a partial cross-sectional view of the base and the eccentric pin of the tape feeder according to the embodiment of the present invention;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 tape feeder 2 unit 3 base 4 supply reel 7 pitch feeder 9 lever 31 camera 32 monitor TV 41 pin 43 eccentric pin 45 long hole T target

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H05K 13/02 H05K 13/08

Claims (4)

(57) [Claims] 1. A pedestal provided with a tape supply unit at one end and a pitch feed unit for feeding a tape supplied from the tape supply unit at a pitch at the other end, and rotating an eccentric pin. A tape feeder that allows the base to swing freely about a pin in the horizontal direction, a jig to which the tape feeder is attached, and a target at the tip of the tape feeder attached to the jig from above. A mechanism for adjusting a position of a chip pick-up of a tape feeder, comprising: a camera for observing; and a monitor television for displaying a target image. 2. A pedestal having one end provided with a tape supply section and the other end provided with a pitch feed section for feeding a tape supplied from the tape supply section at a pitch, wherein the eccentric pin is rotated. This is a method of adjusting the tip pickup position of a tape feeder in which the base can be swung horizontally about a pin by mounting the tape feeder on a jig and positioning the tape feeder in this state. The target is observed with a camera, the image is projected on a monitor television, and the base is swung horizontally around the pin by the eccentric pin to correct the position shift of the target. To adjust the position of the chip pickup in the tape feeder. 3. The apparatus according to claim 1, wherein the tape feeder is pressed against a stopper provided on the jig, positioned and mounted on the jig, and the target is observed by the camera in that state. Item 3. The method for adjusting a chip pickup position of a tape feeder according to Item 2. 4. The tape feeder is provided with a toggle mechanism, and by rotating a lever of the toggle mechanism, the tape feeder is pressed against the stopper to position and mount the tape feeder on the jig. 4. The method according to claim 3, wherein the chip pickup position of the tape feeder is adjusted.