JPH05167290A - Component mounting device - Google Patents

Abstract

PURPOSE:To protect a moving body against damage by providing a detector for detecting a collision of adjacent mounting pads, and a control device for stopping their drives in response to signals outputted from the detector. CONSTITUTION:A moving body 11 collides against another moving body 11 located on its right side to enable a projection 36 to push a actuating pin 35, whereby a pivoting piece 37 is made to rotate around a shaft 39 as a center in a counterclockwise direction resisting the energizing force of a spring 38. A swing piece 41 is moved, whereby a rotary lever 42 mounted on the swing piece 41 is rotated around the shaft in a counterclockwise direction. An up-down rod 45 is made to ascend by the pivoting of the lever 42 resisting the energizing force of a spring to get out of a detection allowable range of a proximity sensor, whereby that the moving bodies 11 collide against each other is detected by a detector and a drive motor is stopped by a controller, and thus the moving body 11 is protected against damage caused by collision. A collision shock acting on the moving body 11 is relaxed by a shock absorber 84 provided to each moving body 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a component mounting device for picking up a component supplied from a component supply device with a take-out tool and mounting it on a printed circuit board.

[0002]

2. Description of the Related Art As a conventional technique of this type, for example, by dividing a mounting table on which a component supply device is mounted into a plurality of units, inertial force due to movement is suppressed, damage to components due to vibration can be prevented, and speedup can be achieved. The one to do was invented.

However, since the respective mounting tables are moved by different motors, it is possible that the adjacent mounting tables collide with each other.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to immediately stop a motor when adjacent mounting tables collide with each other.

[0005]

SUMMARY OF THE INVENTION Accordingly, the present invention is a component mounting apparatus for picking up a component supplied from a component supply device by a take-out tool and mounting it on a printed circuit board. Of the mounting table, a drive source that independently guides the mounting table to move horizontally, a detection device that detects that the adjacent mounting tables collide with each other, and a signal from the detection device. Based on the above, a control device for controlling the drive source to stop is provided.

[0006]

With the above structure, when the mounting tables moved by the drive of the drive source collide with each other, the detection device detects the collision. Then, the control device stops the drive of the drive source based on the signal from the detection device.

[0007]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 2 is a plan view of the electronic component mounting apparatus (1).

(2) is a turntable which is intermittently rotated by a drive source (not shown), and a large number of suction heads (3) for picking up chip components (not shown) from a component supply device (9) described later are arranged at the lower end thereof. Has been done. The suction head (3) has a large number of suction nozzles (4).

Reference numeral (5) is an XY table on which a printed circuit board (6) on which the chip parts taken out by the suction nozzle (4) are sequentially mounted is placed. An X-axis motor (7) and a Y-axis motor (8). ) To move XY.

Reference numeral (9) is a component supply device for supplying components to the component extraction position by the nozzle (4), and a large number of them are mounted on a movable body (11) which moves on the component supply table (10).

In the supply device (9), as shown in FIG. 4, the tape (75) wound around the tape reel (74) mounted on the tape reel mounting plate (73) is sequentially delivered by a drive mechanism (not shown). Then, after the cover tape (76) is peeled off via a certain fulcrum, the component is taken out by the nozzle (4). Peeled cover tape (76)
Is wound on a cover tape take-up reel (77). The supply device (9) is fixed to the engaging plate (81) by the lock mechanism (80) after the pin (79) is inserted into the mounting hole (78) provided on the moving body (11).

Reference numeral (12) is a moving mechanism for moving the moving body (11), which is fitted into a screw shaft (13) which does not rotate as shown in FIGS. 3 and 4 and is driven by a motor (14). The moving body (11) is moved via the drive pulley (15), the driven pulley (16), and the belt (17) wound around the pulleys (15) and (16). That is,
The bearing (13A) of the screw shaft (13) fixed to the driven pulley (16) rotates, the support bearing (13B) around it rotates horizontally, and the moving mechanism (12) fixed to the bearing (13B). ) Base (24) is treated.

Hereinafter, the moving body (11) and the moving mechanism (1
The engagement mechanism (20) of 2) will be described. Reference numeral (21) is a rotatable roller fixed to the back surface of the moving body (11) with a screw (22), and a pair of rollers is provided at both ends of the moving body (11). (23) is the pair of rollers (21),
It is an engaging portion having a slightly narrowed tip for engaging the moving body (11) and the moving mechanism (12) by getting in between (21). As shown in FIG. 4, the engaging portion (23) is provided with a cylinder (2) installed on the base (24) of the moving mechanism (12).
5) is attached to the tip of the rod (26), is driven to rotate about the shaft (27), and the engaging portion (23) is in a state where the rod (26) is retracted as shown by the solid line in FIG. Fit between the rollers (21) and (21) (see FIG. 5). As a result, the moving body (11) is guided by the motor (14) to move the guide (28), (29) along with the movement of the moving mechanism (12), the guide (30),
Moved along (31).

Reference numeral (55) is a cylinder provided on the side surface of the guide (30) for fixing the unused moving body (11) to the standby position which is both ends of the supply base (10).
The rod (56) is moved up by the driving of the cylinder (55), and the fitted portion (5) provided on the back surface of the moving body (11).
By fitting into 7) the moving body (11) is fixed in its position.

Reference numeral (34) is a safety mechanism for stopping the motor (14) when adjacent moving bodies (11) collide with each other, which will be described below. Reference numeral (35) is an operating pin that is pushed by the rightmost protrusion (36) when the moving body (11) indicated by the chain double-dashed line in FIG. 6 unexpectedly moves. The rotating piece (37) having one end attached thereto is rotated about the shaft (39) against the urging force of the spring (38), so that the one end has the rotating piece (3).
7), the other end of which is the other end swingably attached to the base (40) of the moving body (11) (40A).
The swinging piece (41) supported by is moved in the direction of the arrow in FIGS. Therefore, since the shaft (42A) at the upper end of the rotating lever (42) pivotally fixed to the base (24) is fitted in the recess (41A) of the swinging piece (41), as shown in FIG. The upper and lower rods (45) made of metal, which are rotated around the shaft (43) and are in contact with one end of the lever (42) via the locking portion (44), are attached to the spring (46). Raised against the forces. Since the lower ends of the upper and lower bars (45) are out of the detection allowable range of the proximity sensor (48) attached to the base (24) via the attachment piece (47), the moving bodies (11) collide with each other. Is detected, the drive of the motor (14) is stopped by the CPU (68) described later.

Reference numeral (84) is a shock absorber for buffering a shock when the moving bodies (11) collide with each other.
Since the moving bodies (11) are attached to both ends (lower left end and upper right end) respectively, when adjacent moving bodies (11) collide with each other, the impact is prevented.

A suction station is a position where the suction nozzle (4) takes out a component in the component supply device (9).
The parts are taken out by the outermost nozzle (4) in the head (3).

Reference numeral (51) is a recognition device for recognizing the posture of the component sucked by the nozzle (4), and the station in which the device (51) is arranged is the recognition station.

Reference numeral (52) is a nozzle rotation device for rotating the nozzle (4) through the head (3) based on the recognition result of the recognition device (51), which is a nozzle rotation correction station. The rotating device (52) is moved toward and away from the head (3) by a moving mechanism (not shown).

The position next to the nozzle rotation correction station is the mounting station, and the nozzle (4) sucking the component descends to mount the component on the substrate (6) on the XY table (5).

Reference numeral (60) shown in FIG. 10 denotes an operation unit, which is a ten key (61) for inputting data, a cursor key (62),
A SET key (64) for selecting and setting the data displayed on the screen of the CRT (63) at the time of data input, a teaching key (65) for setting various data input modes, and a start key (66) for starting the operation. And so on.

(67) is an interface, which is the X,
Y-axis motors (10), (11), motor (14), cylinder (25), proximity sensor (48), cylinder (5)
5) and the CRT (63) are connected, while these are the CPU as a control device that controls the main mounting operation in a centralized manner.
Controlled by (68).

(69) is a RAM as a storage device for storing data relating to mounting, for example, various data such as the type of printed circuit board to be handled, and (70) is a ROM storing a program relating to mounting.

The operation will be described below.

First, each moving body (11) on which a predetermined component supply device (9) is arranged is installed on the component supply stand (10) via the movement mechanism (12). That is, as shown in FIGS. 2 to 4, the moving body (11) is guided by the guides (30), (31).
The upper part is moved and positioned on the moving mechanism (12). Then, the rod (26) of the cylinder (25) is retracted, and the engagement portion (23) is rotated about the shaft (27) as shown by the solid line in FIG. 4 to be inserted between the pair of rollers (21). (See Figure 5). Now you are ready. For example,
As shown by the solid line in FIG. 2, two moving bodies (11) are installed on the moving mechanism (12) on the component supply table (10),
The following description will be made assuming that the same type of component supply device (9) is arranged on the moving body (11) on each moving mechanism (12).

As shown in FIG. 2, one moving mechanism (12)
Is moved to the left end so as not to hinder the movement of the other moving mechanism (12).

One moving mechanism (12) is a motor (14)
Drive (28) along the screw shaft (13),
As the mobile body (11) is moved by being guided by (29), it is also moved by being guided by the guides (30) and (31). As a result, the desired component supply device (9) is moved to a predetermined position, and the component is taken out by the suction nozzle (4).

By the intermittent rotation of the turntable (2), the nozzle (4) sucking the component is moved to the recognition station, and the recognition device (51) recognizes the posture of the component.

Based on the recognition result, the nozzle rotation device (52) rotates the nozzle (4) through the head (3) at the next nozzle rotation correction station to correct the deviation in the Θ direction. The component whose displacement has been corrected is mounted at a predetermined position in the next mounting station in consideration of the displacement in the XY directions on the printed circuit board (6).

If any one of the component supply devices (9) on the moving body (11) currently in use is successively out of parts, the moving mechanism (1)
2) is moved to the right end in FIG. 2, and this time, the moving mechanism (12) that has been waiting at the left end until then is driven to continue the component supply operation for the nozzle (4). Then, during the supply operation by the leftward moving mechanism (12), the rod (56) of the moving body (11) moved to the standby position at the right end by the cylinder (55) as described above, is fitted to the fitted portion ( 57)
To fix the moving body (11), the worker removes the supply device (9) that is out of parts from the moving body (11), and install the replacement supply device (9) full of alternative parts. You can

The arrangement of the moving body (11) is not limited to that of the above-described embodiment, and for example, as shown in FIG.
A) and (11D) are fixed to the left end and the right end respectively,
The moving bodies (11B), (11
C) may be attached so that the components are supplied from the supply device (9) mounted on the moving bodies (11B) and (11C) by the movement of the moving mechanism (12). This is because the moving bodies (11A) and (11B) are connected to the left moving mechanism (12) and the moving bodies (11C) and (11D) are connected to the right side, the moving body (11A). , (11B) on the arrangement of the feeding device (9) and the moving bodies (11C), (11
If the sequences of D) are the same, the moving body (1
When the parts handled by the supply device (9) on 1D) are out of parts and the supply device (9) on the moving body (11B) is not out of parts, for example, a moving body (12) is moved to the right moving mechanism (12). 11
By connecting B) and (11C), it is convenient to operate the mounting apparatus without stopping it.

The movements of the moving mechanisms (12) and (12) are controlled by the CPU (68) in a state where the moving body (11) is placed, and their positions are grasped so as not to collide with each other. However, safety measures in the event that the moving bodies (11) on each moving mechanism (12) collide with each other will be described.

As shown in FIG. 6, the moving body (11) indicated by the chain double-dashed line hits the moving body (11) on the right side, and the projection (3)
6) pushes the actuating pin (35), the turning piece (3
7) is rotated counterclockwise about the shaft (39) against the urging force of the spring (38), and the swinging piece (41) is moved in the direction of arrow (left direction) in FIG. As a result, the rotation lever (42) attached to the swinging piece (41) is rotated counterclockwise about the shaft (43), and the upper and lower bars (45) rotate the lever (42). By springs (46)
The moving body (11) is detected to have collided with each other by being lifted against the urging force of the vehicle and moving out of the detection allowable range of the proximity sensor (48), and the motor (14) is driven by the control device (not shown). Is stopped, and damage to the moving body (11) due to a collision is prevented. Moreover, a mobile body (11)
The shock absorber (84) provided individually cushions the shock at the time of collision. That is, as shown in FIG. 11, the moving body (11C) that has moved to the moving body (11D) waiting at the standby position at the right end by the movement of the moving mechanism (12).
In case of collision, the shock is buffered by the shock absorbers (84) provided on both moving bodies (11C) and (11D). It should be noted that the moving bodies (11) adjacent to each other in the same manner as the moving bodies (11) arranged as shown in FIG.
If they hit each other, the impact is mitigated.

[0035]

As described above, according to the present invention, when the moving bodies collide with each other, the drive source can be stopped immediately, and the moving bodies can be prevented from being damaged.

[Brief description of drawings]

FIG. 1 is a sectional view of a component supply table.

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

FIG. 3 is a perspective view of a component supply table.

FIG. 4 is a view showing an engagement mechanism.

FIG. 5 is a diagram showing an engagement mechanism.

FIG. 6 is a diagram showing a safety mechanism.

FIG. 7 is a partially enlarged view of FIG.

FIG. 8 is a diagram showing a safety mechanism.

FIG. 9 is a view showing a state where a rotating lever is rotated.

FIG. 10 is a configuration circuit diagram of a component mounting device.

FIG. 11 is a plan view of the component mounting device.

[Explanation of symbols]

 (10) Parts supply table (11) Moving body (12) Moving mechanism (14) Motor (20) Engaging mechanism (21) Roller (23) Engaging portion (25) Cylinder (34) Safety mechanism (35) Operating pin (36) Protrusion (37) Rotating piece (38) Spring (41) Swinging piece (42) Rotating lever (44) Locking part (45) Vertical bar (46) Spring (48) Proximity sensor (68) CPU (84) Shock absorber

Claims (1)

[Claims] 1. A component mounting apparatus for picking up a component supplied from a component supply device by a take-out tool and mounting it on a printed circuit board, and a plurality of mounting bases on which a large number of the component supply devices are mounted, and the mounting bases. A driving source that independently guides each other and horizontally moves, a detection device that detects that the adjacent mounting tables collide with each other, and the driving source is stopped based on a signal from the detection device. And a control device for controlling the component mounting device.