JP2664574B2 - Tape sending device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sprocket rotating through a link member by swinging of a swinging lever while a pressing member presses downward so as not to float a tape enclosing a chip component. And a tape delivery device for delivering the component to a component take-out position.

[0002]

2. Description of the Related Art A prior art of this kind of tape sending apparatus is disclosed in Japanese Patent Application Laid-Open No. 3-133866. According to the related art, the suppressor and the front cover that are the pressing members of the tape are lifted when the tape is set,
A stopper is supported by a shaft of the front cover to maintain that state, and is held upright on the outer peripheral surface of the swing plate so that the suppressor and the front cover are held up.

In order to lower the suppressor, the swing arm is swung to lower the stopper.

[0004]

However, in the above prior art, a stopper must be pivotally provided only to hold the suppressor as the pressing member and the front cover in a raised state, and the structure is complicated. However, there is a disadvantage that the cost is high.

Further, the swing arm must be swung to lower the pressing member, which is troublesome for an unskilled worker.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to simplify the structure for holding the pressing member of the tape in an elevated state for mounting the tape, and to reduce the trouble of lowering the tape pressing member.

[0007]

Therefore, according to the present invention, the sprocket is moved through the link member by the swing of the swing lever while the pressing member presses the tape downward so as not to float the tape enclosing the chip component. In the tape feeding device for feeding the component to the component pick-up position by rotating, the locked member is formed on the pressing member, and the pressing member is raised to a predetermined position to set the tape on the swing lever. In this case, when the locking member is locked to the locked portion, the raised state is maintained, and a predetermined force or more is applied to the pressing member in the raised state in a direction of lowering the locking member, the locking to the locked portion is stopped and the pressing is stopped. This is provided with a locking portion that allows the member to descend.

[0008]

When the pressing member is raised to a predetermined position, the locking portion provided on the swing lever is locked to the locked portion formed on the pressing member, and the raised state of the pressing member is maintained. When the pressing member is lowered by a predetermined force or more after the tape has been set, the locking portion stops locking to the locked portion, and the pressing member moves down.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 2, (1) denotes an X moving in the XY directions by the rotation of an X-axis motor (2) and a Y-axis motor (3).
A Y-table on which a printed circuit board (5) on which a chip-shaped electronic component (4) (hereinafter, referred to as a chip component or a component) is mounted is placed.

[0011] (6) is a supply table, chip components (4)
A large number of component supply devices (7) for supplying the components are provided. Reference numeral (8) denotes a supply stand drive motor, which rotates the ball screw (9) to fit the ball screw (9) through a nut (not shown) fixed to the supply stand (6). 6) is guided and moved by the linear guide (10).

(11) is a turntable which rotates intermittently. A suction nozzle (1) is provided on the outer edge of the turntable (11).
The mounting heads (13) having four (2) are arranged at equal intervals in accordance with the intermittent pitch.

The stop position of the mounting head (13) at which the suction nozzle (12) sucks and picks up the component (4) from the supply device (7) is a suction station. An outside suction nozzle (12) sucks the component (4).

The position where the mounting head (13) stops next is the recognition station, where the component recognition device (14) recognizes the positional deviation of the component (4) to be sucked by the suction nozzle (12). .

The next mounting head (1) of the recognition station
The stop position of 3) is the angle correction station, and based on the recognition result by the recognition device (14), the suction nozzle (1) is stopped.
2) is rotated in the θ direction by the nozzle rotation roller (15), and the positional deviation of the rotation angle of the component (4) is corrected.

The next stop position of the angle correction station is:
A mounting station, on which a component (4) to be suctioned by a suction nozzle (12) of the station is mounted on the substrate (5).

Next, the component supply device (7) will be described.

In FIGS. 1 and 3, reference numeral 18 denotes a tape for enclosing the chip parts 4 at regular intervals, and a cover tape 19 for preventing the chip parts 4 from popping out.
Is attached so as to cover from above.

The supply device (7) intermittently feeds the tape (18) in accordance with the interval between the enclosed components (4), and supplies the component (4) to the suction position of the suction nozzle (12). is there. Reference numeral (20) denotes an elevating rod for driving the tape feeding operation, which is mounted above the component supply device (7) stopped at the position for sucking the component (4) by the movement of the supply table (6), and is not shown. It moves up and down by the drive source.

Reference numeral (22) denotes a swing lever which is pivotally supported by a support shaft (25) about a fulcrum (25A) on a cassette side wall (24) extending above the cassette body (23). When the lowering rod (20) comes into contact with the engaging piece (26) formed on the lever (22) and presses downward, it swings counterclockwise from the position shown in FIG. As shown in FIG. 3, when the lever 20 is raised, the stopper pin 28 restricts the urging force of the tension spring 27 extending between the engagement piece 26 and the cassette side wall 24. Rocks to the position.

A transmission lever (30) is rotatably supported at the lower end of the swing lever (22), and a feed lever (31) is supported at the other end of the lever (30). The movement of the swing lever (22) is transmitted to the control unit. The feed lever (31) is attached to the cassette body (23) so as to be swingable about the feed lever support shaft (32) as a fulcrum, and the swing lever (22) is swung in the counterclockwise direction to rotate in the counterclockwise direction. The feed pawl (33) pivotally supported at one end thereof meshes with the feed gear (34) supported by the support shaft (32), and the feed stopper (35) moves counterclockwise in FIG. Is rotated by a predetermined angle to the position regulated by. A sprocket (36) is integrally attached to the feed gear (34), and a flat chute surface (37) formed on the cassette body (23).
3 is implanted at regular intervals around the outer periphery of the sprocket (36) in a feed hole (not shown) formed in a tape (18) mounted on the tape (18) extending from a reel cassette on the right side of FIG. The feed pin (39) is fitted, and the tape (18) is fed to the left side of FIG. 3 at a predetermined pitch by the rotation of the feed gear (34), and the leading part stored in the tape (18) (4) is located at the component suction position immediately before the portion where the feed pin (39) is fitted.

(40) is a spring (4) attached to the feed gear (34).
A reverse rotation preventing claw that is fitted by the biasing force of 1) to prevent the gear (34) from rotating clockwise.

Reference numeral (43) denotes a suppressor pivotally supported on the cassette side wall (24) by a support shaft (44), one end of which is engaged with a projection (42) provided on the cassette side wall (24).
The other end is engaged with the suppressor (43) and urged to rotate counterclockwise in FIGS. 1 and 3 by the urging force of a torsion coil spring (45) wound around the support shaft (44). Then, the tape (18) fed on the chute surface (37) is pressed from above to restrict the floating, and the parts (4)
Tape (18) at the front (right side in FIG. 3) of the suction position of
Opening (46) for peeling off cover tape (19)
have. A pin (48) is implanted at the left end in FIG. 3 of the suppressor (43), and is counterclockwise in FIG. 3 by a spring (50) extending from the cassette body (23). The suppressor pressing piece (51) which is urged and pivoted engages the pin (48), and the downward pressing of the suppressor (43) requires only the spring (45) because the suppressor (43) is long. Reinforced due to insufficient pressing force. Also, the suppressor (43) is bent in a U-shaped cross section to open the lower part in order to increase the strength, and covers the chute surface (37) and also from the side of the chute surface (37). The tape (18) is roughly regulated.

The cover tape (19) peeled off from the tape (18) is attached to the cover tape reel (54) pivotally supported on the side wall (24) by the reel support shaft (53).
4) Winded from below.

The mechanism for winding the reel (54) will be described.

A ratchet lever (55) is pivotally supported on the reel support shaft (53), and a roller (56) is pivotally supported at an end thereof. The roller (55) and the swing lever (22) are pivotally supported. The roller (56) is pressed by the swinging lever (22) by the urging force of the tension spring (57) stretched between ()). The ratchet lever (55) is pivotally supported with a ratchet pawl (59) which can be engaged with a ratchet gear (58) formed integrally with the reel (54). ) Swings counterclockwise due to the lowering of the lifting rod (20).
Due to the swing of 5), the reel (54) rotates counterclockwise to wind up the cover tape (19). (60) is a ratchet gear (58) for preventing reverse rotation of the reel (54).
It is a reverse rotation preventing claw that meshes with the.

As shown in FIGS. 1, 3 and 4, a protruding piece (62) is formed at the right end of the suppressor (43), and the protruding piece (62) is provided below the swing lever (22). A suppressor engaging projection (63) with which the piece (62) engages is formed. A lower engaging slope (63A) is provided below the suppressor engaging projection (63), and an upper engaging slope (63B) is provided above.
The suppressor (43) is located at a position where the tape (18) can be pressed as shown in FIG. 3, and the swing lever (22) is not pressed by the lifting rod (20), and the stopper is actuated by the urging force of the spring (27). In the position regulated by (28), the protrusion (62) is separated from the upper engagement slope (63) by leaving a small gap.
B) is located above.

Therefore, the lifting rod (2) of the swing lever (22)
0), the projection (63) is moved by the projecting piece (6).
There is no collision in 2).

When the operator lifts the suppressor (43), the protruding piece (62) rotates clockwise in FIG. 4 so as to come into contact with the upper engaging slope (63B).
When the suppressor (43) is lifted by the operator, the projecting piece (62) presses the upper engagement slope (63B), whereby the swing lever (22) is pivoted counterclockwise in FIG.
A), and after passing through the position shown in FIG.
2) rotates clockwise in FIG. 5, the protruding piece (62) engages with the lower engaging slope (63A), and the lever (22) is
Swing to the position where it engages with the stopper (28). The suppressor (43) is raised to the position shown in FIG. 1 and this state is maintained.

The lower engaging slope (63A) is engaged with the projecting piece (62) as shown in FIG.
(62) applies a force of "F" to the swing lever (22) in a direction perpendicular to the tangent (L) of the projection (62). The direction of the force "F" is the direction in which the swing lever (22) rotates counterclockwise.

However, since the biasing force of the spring (27) for rotating the swing lever (22) clockwise is larger, the swing lever (22) is restricted by the stopper (28). And the suppressor (43) keeps the state of FIG.

Accordingly, the shape of the lower engagement slope (63A) causes the suppressor (43) to rotate counterclockwise around the support shaft (44) (that is, to lower the suppressor (43)).
To rotate the rocking lever (22) in the counterclockwise direction, the operator applies the urging force of the spring (27) and the projecting piece (62) to the lower engaging slope. (63
The swing lever (22) from the state of FIG.
When a force greater than the force against turning the counterclockwise is applied in the direction of lowering the suppressor (43), the swing lever (22) swings counterclockwise, and the suppressor (43)
Can descend.

In this embodiment, the lower engaging slope (63A) has a linear shape, and when the suppressor (43) is lowered from the state shown in FIG. 1, the slope (63A) at the contact point with the projecting piece (62).
Is applied to the fulcrum (25A), but not to the left of a straight line connecting the fulcrum (25A) and the contact point.

As shown in FIGS. 1 and 4, the shape of the suppressor engaging projection (63) is rounded between the slope (63A) and the slope (63B), and the suppressor (43) is rounded.
When the contact point between the protrusion (63) and the protrusion (62) moves to a position between the slope (63A) and the slope (63B) due to the lowering of
A protruding piece (62) perpendicular to the tangential direction of the contact point
The direction of the force applied to the swing lever (22) is set so as to rotate the lever (22) counterclockwise.

The swinging of the swing lever (22) in the counterclockwise direction due to the lowering of the suppressor (43) is up to the position shown in FIG. 5. When the swinging lever (22) is lowered below this position, the lever (22) swings clockwise. Move. In addition, if the suppressor (43) is lowered even slightly from the position shown in FIG. 5, the suppressor (43) can be moved by the spring (45) and the spring (27) without applying force.
Will be lowered by the urging force.

The swing lever (22) is connected to a support shaft (25).
The projection (63) is bent so as to form a recess in the depth direction in FIG.

Also, the operator can manually swing the lever (22).
Even if the engaging piece (26) is pushed down, the protrusion (63) escapes to the right side in FIG. 3, so that the suppressor (43) moves down.

Reference numeral (64) denotes a shutter slidably mounted on the suppressor (43), and the cassette body (23).
The tape (18) is swung by a shutter lever (66) rotatably supported around a shutter support shaft (65).
It slides on the top. The shutter lever (66) swings by the reciprocating motion of the shutter drive lever (67) engaging below and the urging force of the spring (68).
When the feed (6) is being moved or while the supply table (6) is moving, the shutter (6
Only when the nozzle (12) is lowered and the component (4) is sucked by the nozzle (12), the lever (67) is pulled to the left in FIG. 1 and the shutter (64) moves to move the component (4) at the suction position. ) Is released.

A shutter lever stopper (69) is engaged with a shutter lever (66) swinging by the urging force of a spring (68). The shutter lever (64) is located at a position where the shutter (64) covers the component (4) at the component suction position. The shutter (6
4) and the distance of the gap between the shutter drive lever (67) and the shutter lever (66) at that time is determined.

Next, the component supply device (7) is connected to the supply table (6).
The mechanism for attaching to is described with reference to FIG.

Reference numerals (73) denote mounting pins which are mounted one by one before and after the lower part of the cassette main body (23) of the supply device (7), and mounting plates (74) before and after the supply table (6).
The feeding device (7) is positioned by fitting into the mounting holes (76) and (77) formed in the (75).
Reference numeral (78) denotes a lock lever pivotally supported by a support shaft (79). A lock claw (80) at the tip of the lever (78) is provided on a lock plate (81) provided on the supply stand (6). The feeding device (7) is pressed against the lower surface of the claw engaging projection (81A).
To the supply stand (6).

The operation of the above configuration will be described below.

First, according to the type of the printed circuit board (5) on which the chip component (4) is to be mounted, the operator places the component supply device (7) on the supply table (6). That is, the supply device (7) is positioned by inserting the mounting pins (73) at the front and rear of the supply device (7) into the mounting holes (76) and (77), and the lock rotated counterclockwise. Lever (7
8) is rotated clockwise to lock the claw (8).
0) is a claw engaging projection (81A) of the lock plate (81).
And is fixed by being engaged with the lower surface thereof. (See FIG. 3).

As described above, when the supply device (7) is disposed on the supply table (6), the suction nozzle (12) sucks the component (4) from the supply device (7) and the printed circuit board (4). The operation of attaching to (5) is performed.

Next, when an operation unit (not shown) is operated to start automatic operation, a motor (3) is rotated to supply a desired component (4) via a ball screw (9). Nozzle (1
The supply table (6) is guided by the linear guide (10) to move to the suction position of 2).

During this movement, the shutter lever (66) is moved around the shutter support shaft (65) by a spring (68) as shown in FIG.
The shutter (64) is moved in the tape feed direction, and the tape (1) is removed with the upper cover tape (19) peeled off.
8) It covers the part (4) enclosed in the inside and prevents the part (4) from jumping out during the movement.

When the supply device (7) stops, the lifting rod (2)
0) descends and comes into contact with the engaging piece (26) of the swing lever (22) and pushes it down, so that the swing lever (22) swings counterclockwise in FIG. 3 and pushes the transmission lever (30). Then, the feed lever (31) swings counterclockwise, and the feed pawl (33) turns the feed gear (34) to turn the sprocket (36). The feed pin (39) feeds the tape (18) at a predetermined pitch by the rotation of the sprocket (36).

During the feeding operation of the tape (18), the suppressor (43) presses the tape (18) so as not to float upward.

On the other hand, when the swing lever (22) swings counterclockwise, the ratchet lever (55) swings counterclockwise via the tension spring (57), and the ratchet pawl (5) is rotated.
9) meshes with the ratchet gear (58) and rotates the cover tape reel (54) counterclockwise by a predetermined angle. The opening (4) of the suppressor (43) is caused by the rotation of the reel (54).
The cover tape (19) is wound around the reel (54) while being peeled off from the tape (18) at the position (6). Also,
At this time, the shutter (64) covers the upper part of the component (4) from which the cover tape (19) has been peeled off so that the chip component (4) does not protrude.

Next, when the lifting rod (20) moves upward, FIG.
The swing lever (22) is connected to the tension spring (2) as shown in FIG.
The urging force of 7) returns clockwise, the feeding operation of the tape (18) and the peeling operation of the cover tape (19) are stopped, and the chip component (4) to be sucked next is the component by the suction nozzle (12). It is located at the suction position.

Next, the shutter drive lever (67) is
When it is pulled to the left, it engages with the shutter lever (66), swings the lever (66) clockwise, and the shutter (64) moves to the right. Thus, the upper part of the chip component (4) at the component suction position is opened.

Next, the suction nozzle (12) descends, sucks the component (4) at the component suction position, and moves up. When the suction operation of the suction nozzle (12) is completed, the shutter drive lever (67) returns to the right side, the shutter lever (66) swings counterclockwise by the urging force of the spring (68), and the shutter (64) ) Returns to the left and covers the component suction position.

Next, when the nozzle (12) sucks the component (4), the turntable (11) rotates intermittently, and the next nozzle (12) moves to the suction station and the component ( The supply device (7) for supplying 4) is moved to the suction position of the nozzle (12) by the rotation of the motor (8). When the nozzle (12) sucks the component (4), the turntable (11) rotates intermittently, and the nozzle (12) that first sucks the component (4) moves to the recognition station.

Then, at the station, the nozzle (1
The picked-up component (4) of 2) is a component recognition device (14)
Will be recognized.

The nozzle (12) stopped at the recognition station due to the intermittent rotation of the next turntable (11) moves to the angle correction station, and the nozzle rotation roller (1).
By 5), the displacement of the rotation angle in the θ direction of the component (4) is corrected based on the recognition result of the recognition device (14).

The nozzle (1) stopped at the angle correction station due to the intermittent rotation of the next turntable (11).
2) is moved to the mounting station, and the XY table (1) is corrected by the rotation of the X-axis motor (2) and Y-axis motor (3) based on the recognition result of the recognition device (14).
The component (4) sucked by the nozzle (12) is mounted at a position where the printed board (5) is to be mounted.

The above operations are repeated, and the components (4) are sequentially sucked from the respective component supply devices (7).

In this way, the tape (18) wound on the reel (not shown) is gradually shortened, and when the material finally runs out, the running out of the material is detected by detecting a continuous suction error of the part (4) and the like. This is reported to the user by a notifying device (not shown).

Next, the operator stops the component mounting operation using an operation key (not shown), and replaces the component supply device (7) that has run out of material.

That is, after the lock is released by the lock lever (78), the supply device (7) is removed from the supply table (6).

Next, when the operator removes the suppressor pressing piece (51) from the pin (48) and lifts the suppressor (43) against the spring (45), the projecting piece (62) moves the swing lever ( 22) The upper engaging slope (63B) is pressed, and the lever (22) is swung counterclockwise in FIG.

When the swing lever (22) is lifted up to the position shown in FIG. 5, the swing lever (22) swings counterclockwise by the urging force of the spring (27), and presses the protruding piece (62) to push the suppressor (62). 43) is further lifted against the urging force of the spring (45), and is held in the state shown in FIG. 1 locked by the stopper (28). However, if the spring (27) has friction and the urging force of the spring (27) is weak, it stops at the position where the hand is released. In this state, the remaining tape (18) is removed, and the cover tape (19) wound around the reel (54) is removed.

Next, a new tape (18) is mounted on the chute surface (37), the feed pin (39) is engaged with the feed hole, and the tip of the cover tape (19) is reeled through the opening (46). When a force is applied to lower the suppressor (43) after winding the wire around the projection (54), the protruding piece (62) presses the lower engagement slope (63A) and applies a force such as a biasing force or a frictional force of the spring (27). The suppressor (43) pivots counterclockwise around the support shaft (44) while pivoting the pivoting lever (22) counterclockwise against the rotation.

When the counterclockwise rotation is made beyond the state shown in FIG. 5, the protruding piece (62) engages with the upper engaging slope (63B), and the spring (27) is applied without any force applied by the operator. 6) and the urging force of the spring (45) lowers the tape (18) to the position shown in FIG. 6 where the tape (18) is pressed.

In this position, the protruding piece (62) has a gap between it and the upper engaging slope (63B).

Thereafter, the pressing piece (51) is engaged with the pin (48), and the force of pressing the tape (18) of the suppressor (43) by the spring (50) is increased.

Next, in the same manner as described above, the component supply device (7) is mounted at a predetermined position on the supply table (6) by the mounting pin (73).
(73) is inserted into the mounting holes (76) and (77), and the lock lever (78) is used to lock the lock claw (80) to the lock plate (81) for mounting.

Then, the mounting operation of the chip component (4) on the printed circuit board (5) is continued in the same manner as described above.

The suppressor engaging projection (6
The shape of the lower engagement slope (63A) in 3) is better when the tangent (L) of each point on the slope stands with respect to a straight line connecting the point and the fulcrum (25A) as shown in FIG. However, if the force "F" applied from the protruding piece (62) is the same as in the case of sleeping as shown in FIG. 8, the distance L1 is greater than the distance L2, and the moment for rotating the lever (22) is obtained. Is big.

That is, in the case of FIG. 7, the suppressor (43) can be lifted with a smaller force. However, in the case of FIG. 8, even if the biasing force of the spring (45) is stronger, the suppressor (43) can be kept in the raised state.
If the frictional force with the protruding piece (62) is large even if the slope (63A) is raised more than the state shown in FIG.
Can be kept in an elevated state.

When a force "F" is applied from the projecting piece (62) to the left side of the straight line connecting the fulcrum (25A) and the contact point as shown in FIG. 9, the swing lever (22) is moved to the stopper (28). ), The force is applied so as to rotate in the clockwise direction, so that even if the suppressor (43) is pressed down, it cannot be lowered.

In this embodiment, the projection (63) engaging with the projection (62) is provided on the swing lever (22) for feeding the tape (18) and winding the cover tape (19). However, a separate swing lever may be provided independently, and a protrusion that engages with the protrusion (62) may be provided there.

[0073]

As described above, according to the present invention, in order to maintain the raised state of the pressing member, only the locking portion is formed on the pressing member and the locking member is provided on the swing lever for sending out the tape. In addition, the structure can be simplified, and the pressing member itself can be lowered by hand, so that it is possible to reduce the trouble.

[Brief description of the drawings]

FIG. 1 is a side view of a component supply device.

FIG. 2 is a plan view of the component mounting device.

FIG. 3 is a side view of the component supply device.

FIG. 4 is an enlarged side view of a main part of the component supply device.

FIG. 5 is a side view of the component supply device.

FIG. 6 is a side view of the component supply device.

FIG. 7 is a side view showing an engagement state between a projection and a suppressor engagement projection.

FIG. 8 is a side view showing an engagement state between a projection and a suppressor engagement projection.

FIG. 9 is a side view showing an engagement state between the protrusion and the suppressor engagement protrusion.

[Explanation of symbols]

 (4) Chip-shaped electronic component (chip component) (7) Component supply device (tape sending device) (18) Tape (22) Swing lever (30) Transmission lever (link member) (31) Feed lever (link member) (33) Feeding pawl (link member) (34) Feed gear (link member) (36) Sprocket (43) Suppressor (pressing member) (62) Projection piece (locked portion) (63) Suppressor engaging projection ( Locking part)

Claims (1)

(57) [Claims] 1. A sprocket is rotated through a link member by a swing of a swing lever while a pressing member presses a tape downward so as not to float a tape enclosing a chip component, and is sent to a component take-out position. In the tape feeding device, a locked portion is formed on the pressing member, and when the pressing member is raised to a predetermined position to set the tape on the swing lever, the locked portion is engaged with the locked portion. When the stop member is stopped and maintained in the ascending state and a force equal to or more than a predetermined force is applied to the pressing member in the ascending state in a direction of descending, the locking to the locked portion is stopped, and A tape sending device characterized by being provided.