JPH051298U - Parts mounting device - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the tape extending from the tape reel of the component supply device from loosening when the component supply table moves or when the tape is sent. [Structure] When the parts supply table (8) moves, the pressing piece (46) holds down the rotation of the tape reel (16) by the pulling force of the spring (48), and the suction nozzle (6). When the tape (28) is fed to supply the chip part (2) to (1), the release rod (54) is lowered to push down the lever (50) to weaken the tension biasing force of the spring (48) and press the pressing piece (46). Weaken the braking force of.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 According to the present invention, the tape reel is provided with a plurality of component supply devices for feeding the tape by rotating the tape reel around which the tape containing the chip component is wound. The present invention relates to a component mounting device that moves a motion in a state where it is braked by a braking unit, and a suction nozzle that picks up a chip component from a desired component supply device mounts the component on a printed substrate.

[0002]

[Prior Art]

 Conventionally, the component supply device of this type of component mounting device intermittently feeds out the tape component while rotating the tape reel around the tape reel around which the tape in which the chip components are enclosed at equal intervals is rotated to deliver the chip component. The parts were supplied to the pick-up position, and the suction nozzle picked them up and mounted them on the printed circuit board.

However, in this state, the tape reel of the component supply device may rotate due to the vibration when the component supply table on which the component supply device is mounted moves, and the tension of the tape may loosen. Due to this looseness, the tape gets on the outer circumference of the reel and the tape is broken, the component storage part is crushed and the component is damaged, or it is sandwiched between adjacent tape reels and the pull-out resistance of the tape increases. There were drawbacks such as.

Further, when the tension is loosened, when the detection sensor detects the end of the tape, or when parts having different characteristics are accommodated in the tape and the division is detected by the detection sensor, the detection sensor detects Occasionally, a malfunction occurred in detection.

For this reason, it is possible to keep the tape reel in a constantly braked state by pressing it with a pressing piece biased by a spring so that the tape reel does not rotate. As the moving speed of the parts supply table increases due to the higher speed, the vibration of the parts supply table increases and the tape reel is braked with a large force. Tension is applied and the tape is cut off, which prevents reliable tape feeding.

For this reason, the technique disclosed in Japanese Utility Model Laid-Open No. 64-37100 has been proposed. According to this technique, the tape reel is pressed to prevent rotation of the tape reel due to vibration during movement of the component supply base. The brake mechanism is provided so that the tape reel can be freely rotated by releasing the brake mechanism when feeding the tape.

[0007]

[Problems to be solved by the device]

 However, in the above-mentioned conventional technique, when the tape is fed to supply the parts, if the tape feeding speed is high, the tape reel rotates by the tape feeding amount but does not stop and the tape loosens too much. The same problem will occur.

[0008] Therefore, an object of the present invention is to ensure that the tape can be delivered without being loosened or cut.

[0009]

[Means for Solving the Problems]

 Therefore, according to the present invention, the tape reel on which the tape in which the chip parts are enclosed is wound to rotate to feed the tape to supply the chip parts. In a component mounting device in which the suction nozzle that picks up the chip component from the desired component supply device mounts the component on the printed board by moving the rotation while braking by the braking means, feeds the tape for component supply. A braking alleviation means for relaxing the braking force by the braking means is provided at the time of taking out.

[0010]

[Action]

 When the component supply table is moved, the braking means brakes so that the tape reel does not rotate, and when the tape is sent out, the braking relaxation means relaxes the braking force of the braking means.

[0011]

【Example】

 Hereinafter, an embodiment according to the present invention will be described in detail with reference to FIGS.

(1) is an XY table, and the XY table (1) is a workbench that horizontally moves in the X and Y directions, on which a printed circuit board (3) on which a chip component (2) is mounted is placed. It (4) is a turntable which is intermittently rotated by a drive source (not shown), and a plurality of suction nozzles for picking up and sucking the chip component (2) from the component supply device (5) and transporting it on the lower surface of the turntable (4) (6) is installed.

(7) is a positioning device, and the positioning device (7) aligns the center of the chip component (2) with the center position of the suction nozzle (6) and mounts the printed circuit board (3). It rotates according to the direction, and is equipped with multiple positioning units to accommodate the size of parts.

(8) is a component supply table, and the component supply table (8) is, as shown in FIG. 1, a linear guide (10) on a support table (9) installed on a base table (not shown). 2 and the linear guide bearings (11) so as to be movable in the left-right direction in FIG. 2, and the support pins (13) and (14) provided at the lower part of the tape feeding device (12) are attached to the component supply base (8). ) Is positioned and installed in a mounting hole (not shown).

Reference numeral (15) is a support arm, and the support arm (15) extends from the component supply base (8), and a tape reel (16) is reeled on the support arm (15). The lower end surface portions (19) of a pair of reel mounting plates (18), which are rotatably sandwiched and held around a support shaft (17), are supported in an unfixed state, and the reel mounting plate (18) is also supported. When the locking piece (20) protruding toward the lower end is engaged with the notch (21) provided at the tip of the support arm (15), the component supply base (8) is moved. The reel mounting plate (18), that is, the tape reel (16) can be prevented from being laterally blurred. On the other hand, the upper end portion (22) of the reel mounting plate (18) is attached to the tape feeding device (12) via a fixing pin (23) and swings vertically with the fixing pin (23) as a fulcrum. It is movably supported, and its swinging range in the vertical direction is regulated via the elongated hole (24) and the guide pin (25). In the figure, (26) is a ball screw for moving the component supply base (8) by driving a servo motor (not shown).

That is, the reel mounting plate (18) for mounting and holding the tape reel (16) is provided at three positions of the support pins (13) (14) and the support arm (15) provided on the component supply base (8). The tape reel (16) is swingably attached to the tape feeding device (12) so that the weight of the tape reel (16) can be shared.

Here, a brake mechanism attaching portion (27) is formed on one of the pair of reel attaching plates (18), and the brake mechanism attaching portion (27) is provided with a brake mechanism described later.

The tape delivery device (12) installed on the component supply table (8) is a suction nozzle (6) which is a component take-out means for the tape (28) wound around the tape reel (16). It is designed such that it is sent out by a predetermined pitch toward the.

Reference numeral (29) is a sprocket, and a pin (30) with which a feed hole (not shown) of the tape (28) meshes is implanted. (31) is a chute for guiding the tape (28) wound around the tape reel (16) to the sprocket (29). A press plate (33) which is biased by a spring (32) is provided on the seat (29), and the tape (28) on the chute (31) is attached to the press plate (33). While being pressed, it is guided to the sprocket (29).

A gear (34) is integrally provided on the sprocket (29), and the gear (34) is rotatable on a fixed shaft (not shown) fixed to a fixed frame (35). On the other hand, a swing arm (37) provided with a swingable gear feed pawl (36) meshing with the gear (34) is swingably supported on the fixed shaft (not shown). It is pivotally supported. The swing arm (37) intermittently rotates the turntable (4) against the urging force of a spring (38) installed between the swing frame (35) and the fixed frame (35). A pusher driven by a drive source (not shown) The gear (34) is swung by a pushing operation synchronized with the intermittent rotation of (39), and the gear (34) is rotated in a ratchet type. As a result, the sprocket (29) is rotated by one pitch and the tape (28) is fed by one pitch.

That is, the spring (38) is stretched between the pin (40) protruding from the gear feed pawl (36) and the pin (41) protruding from the fixed frame (35), and The feeding claw (36) is urged and pressed against the gear (34), and the swinging arm (37) is returned.

Further, (42) is a lock claw, and the lock claw (42) is rotatably supported by the fixed frame (35) so that the gear (34) is urged by a spring (43). Is elastically engaged to prevent reverse rotation of the sprocket (29) when the swing arm (37) returns.

Reference numeral (44) is a cover tape take-up reel, and the cover tape (45) peeled off by the tip of the pressing plate (33) at the tip of the chute (31) is rotated by a drive source (not shown). Take it up.

The brake mechanism provided in the brake mechanism mounting portion (27) will be described.

The brake mechanism prevents the tape (28) from loosening when the tape reel (16) rotates due to vibration during the movement of the component supply table (8) having the component supply device (5), and When the tape (28) is delivered, the tape reel (16) is given an appropriate turning load. That is, the pressing piece (46) is pulled and urged by the spring (48) so as to rotate counterclockwise in FIG. 1 about the pressing support shaft (47), and the outer peripheral edge of the tape reel (16). Is pressed to stop the tape reel (16) from rotating.

The spring (48) is stretched between the pressing piece (46) and the lever (50) rotatable around the lever support shaft (49). A spring (52) is stretched between the lever (50) and a rising piece (51) from the brake mechanism mounting portion (27), and the biasing force due to the tension of the spring (47) is the spring. Since it is larger than (48), the lever (50) is urged counterclockwise in FIG. 1 and abuts against the stopper (53) to stop.

Reference numeral (54) is a release rod, which is provided above the component supply device (5) located at the component suction position by the suction nozzle (6) and intermittently rotates the turntable (4). Driven by a drive source (not shown) through a drive mechanism (not shown), and moves up and down in synchronization with the intermittent rotation of the turntable (4) and the tape feeding operation of the component feeding device (5), and when it is lowered, the pressing piece The roller (55) attached to one end of (46) is pressed to rotate the lever (50) clockwise in FIG. When the lever (50) rotates in the clockwise direction, the spring (48) contracts to weaken the force of the pressing piece (46) for pressing the tape reel (16).

The operation will be described below with the above configuration.

First, by rotating the ball screw (26), the component supply base (8) moves along the linear guide (10), and then the chip component (2) to be taken out to the suction nozzle (6). The component supply device (5) for supplying stops at the component suction position. In parallel with this, the turntable (4) rotates intermittently, and the suction nozzle (6) that next sucks the chip component (2) stops at the component suction position.

While the component supply table (8) is moving, the lever (50) is restricted by the stopper (53) as shown in FIG. 1, the spring (48) is extended and the pressing piece (46) is extended. The tape reel (16) is pressed with a strong force. Therefore, the tape reel (16) does not rotate due to the vibration during the movement and the stop of the component supply table (8).

Next, after the movement of the parts supply base (8) is stopped, the release rod (54) descends and presses against the roller (55) to cause the lever (50) to resist the biasing force of the spring (52). The release rod (54) stops descending with the spring (48) being weakened by rotating it in the time direction of 1. The release bar (54) does not start descending after the parts supply base (8) stops, but starts lowering before the parts supply base (8) stops moving to start the parts supply base (8). ) May stop and then contact the roller (55). Thus, when the braking force of the pressing piece (46) on the tape reel (16) is weakened, the pusher (39) moves leftward in FIG. 1 to swing the swing arm (37) clockwise. ..

Then, the gear feed pawl (36) meshes with the gear (34), the sprocket (29) rotates by a predetermined angle, and the tape (28) in which a hole (not shown) meshes with the pin (30) is a tape reel. While being rotated by (16), it is guided by the chute (31), and while being pressed by the pressing plate (33), it is fed by a predetermined pitch so that only one component is fed. At this time, since the release rod is stopped so that the pressing force on the tape reel (16) by the pressing piece (46) is appropriate, the tape (28) does not break, and the tape reel (16) is The tape (28) does not loosen by rotating by the amount of (28) sent. Further, when the tape (28) is fed, the cover tape (45) is rotated at the tip of the pressing plate (33) by the rotation of the take-up reel (44) around which the cover tape (45) is wound. ) Is peeled from the surface.

Next, the suction nozzle (6) descends to suck the chip component (2) from the tape (28) and take it out.

Next, when the pusher (39) returns to the right side in FIG. 1, the swing arm (37) and the gear feed pawl (36) return due to the urging force of the spring (38), but the pusher (39) moves to the gear (34). Since the lock claws (42) are meshed so as not to rotate in the reverse direction, the sprocket (29) does not rotate in the reverse direction and the tape (28) remains stopped. When the feeding of the tape (28) is completed, the release rod (54) rises and the lever (50) is rotated by the biasing force of the spring (52) to a position where it is restricted by the stopper (53). Then, the urging force of the spring (48) becomes stronger and the braking force of the pressing piece (46) increases.

Next, the rotary disk (4) intermittently rotates and the suction nozzle (6) sucking the chip component (2) moves away from the component suction position, and the next suction nozzle (6) moves. .. In parallel with this, the component supply table (8) moves, and the component supply device (5) for supplying the chip component (2) to be taken out next stops at the component suction position, and in the same manner as described above. Adsorption of the chip component (2) is performed.

The above-described operation is repeated and the chip component (2) is sucked. The sucked chip component (2) is positioned by the positioning device (7) and then the XY table (1). It is mounted on the upper printed circuit board (3).

Incidentally, due to a recent demand for a higher component mounting speed, tape feeding is performed before the component supply table stops moving. For example, the pusher (39) of the present embodiment is widened in the moving direction of the component supply table (8), and the component supply device (5) that is next moving while the component supply table (8) is moving is at the component suction position. If the pusher (39) moves to the left side in FIG. 1 before it arrives at the position of the swing arm (37) to start the swing and start the delivery of the tape (28). , The release rod (54) is also wide in the moving direction of the component supply base (8), and the lever (50) swings by the lowering of the release rod (54) before the pusher (39) contacts the swing arm (37). The movement of the pressing piece (46) may be relaxed. By doing this, the braking of the rotation of the tape reel (16) is relaxed until the tape (28) is started to be delivered, and the tape (28) is reliably delivered without being cut.

The second embodiment will be described below with reference to FIG. The second embodiment is different from the first embodiment only in the brake mechanism, and the other structures are the same. In FIG. 3, (57) is a brake mechanism mounting portion for mounting the brake mechanism, which is formed on one reel mounting plate (18).

Reference numeral (58) is a first pressing piece, which is rotatably mounted around a support shaft (59) provided in the brake mechanism mounting portion (57). A spring (60) stretched between the brake mechanism mounting portion (57) and the first pressing piece (58) causes the first pressing piece (58) to rotate counterclockwise in FIG. The tape reel (16) is urged and pressed. A roller (61) is attached to one end of the first pressing piece (58), and the first pressing piece (58) is rotated clockwise by the pressure contact of the releasing rod (54) that descends, so that the tape reel ( It is designed to release the pressure of 16).

Reference numeral (62) is a second pressing piece, which is rotatably mounted around a support shaft (63) provided in the brake mechanism mounting portion (57). A spring (64) is stretched between the second pressing piece (62) and the breaking mechanism mounting portion (57), and the second pressing piece (62) always presses the tape reel (16) to rotate. Is giving a load of.

Therefore, both the pressing pieces (58) and (62) press the tape reel (16) except when the tape is fed, and a strong braking force is applied to the tape when the component supply table (8) is moved or stopped. The reel (16) is prevented from rotating, and when the tape is fed, the release rod (54) is lowered to release the first pressing piece (58) and press only the second pressing piece having an appropriate pressing force. As described above, the tape is not broken or loosened.

Instead of the second pressing piece (62) of the second embodiment, the tape reel (16) may be laterally pressed to apply a load, or the spindle (17) and the tape may be applied. It is also possible to apply a friction between the reels (16) or the like and use it as a rotation load.

[0043]

As described above, according to the present invention, when the parts supply table is moved, sufficient vibration is applied so that the tape reel does not rotate due to its vibration, and when the tape is sent out, the braking force is relaxed. Since an appropriate braking force is applied, the tape can be delivered reliably without loosening or breaking.

[Brief description of drawings]

FIG. 1 is a side view of essential parts of a component mounting device to which the present invention is applied.

FIG. 2 is a plan view of a component mounting device to which the present invention can be applied.

FIG. 3 is a side view showing a second embodiment of the present invention.

[Explanation of symbols]

 (2) Chip-shaped electronic component (chip component) (3) Printed circuit board (5) Component supply device (8) Component supply stand (16) Tape reel (28) Tape (33) Presser plate (braking means) (54) Release Stick (braking relaxation means)

Claims (1)

[Claims for utility model registration] [Claim 1] A plurality of component supply devices are provided for feeding out the tape by rotating the tape reel around which the tape encapsulating the chip component is wound. In the component mounting device, the component supply base is moved in a state where the rotation of the tape reel is braked by the braking means, and the suction nozzle that picks up the chip component from the desired component supply device mounts the component on the printed circuit board. A component mounting apparatus, characterized in that a braking alleviating means for relaxing a braking force by the braking means is provided when the tape is sent out for supply.