JP3054479B2 - Component mounting 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 component mounting apparatus for picking up a component supplied from a component supply device with a take-out tool and mounting the component on a printed circuit board.

[0002]

2. Description of the Related Art As a conventional technique of this kind, for example, by dividing a mounting table for mounting a component supply device into a plurality of parts, it is possible to suppress inertial force due to movement, prevent damage to parts due to vibration, and increase speed. Things to do were figured out.

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

[0004]

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

[0005]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a component mounting apparatus in which components supplied from a component supply device are taken out by a take-out tool and mounted on a printed circuit board. A plurality of mounting tables, a drive source that guides the mounting tables independently of each other and horizontally moves, and is attached to each of the mounting tables to detect that adjacent mounting tables have collided with each other. And a control device for controlling the drive source to stop based on a signal from the detection device.

[0006]

According to the above arrangement, when the mounting tables moved by the driving of the driving source collide with each other, the detection devices attached to the respective mounting tables detect the collision. Then, the control device stops driving the drive source based on the signal from the detection device.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

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

Reference numeral (2) denotes a rotary disk which is intermittently rotated by a drive source (not shown). At its lower end, a number of suction heads (3) for picking up chip components (not shown) from a component supply device (9) to be described later are arranged. Have been. The suction head (3) has a number of suction nozzles (4).

An XY table (5) on which a printed circuit board (6) on which the chip components picked up by the suction nozzle (4) are sequentially mounted is placed, and an X-axis motor (7) and a Y-axis motor (8). ) Is moved XY.

A component supply device (9) for supplying components to a component pick-up position by the nozzle (4) is mounted on a moving body (11) moving on a component supply table (10).

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

A moving mechanism (12) for moving the moving body (11) is fitted on a non-rotating screw shaft (13) as shown in FIGS. 3 and 4, and is driven by a motor (14). The moving body (11) is moved via a driving pulley (15), a driven pulley (16), and a belt (17) stretched over both 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).

Hereinafter, the moving body (11) and the moving mechanism (1)
The engagement mechanism (20) of 2) will be described. Reference numeral (21) denotes a rotatable roller fixed to the back surface of the moving body (11) by screws (22). A pair of rollers are provided at both ends of the moving body (11). (23) is the pair of rollers (21),
(21) It is an engaging portion which is slightly narrower at the tip for entering the space and engaging the moving body (11) and the moving mechanism (12). As shown in FIG. 4, the engaging portion (23) is provided with a cylinder (2) mounted on a base (24) of the moving mechanism (12).
5) is attached to the distal end of the rod (26), and is rotated about the shaft (27) by its driving. As shown by a solid line in FIG. 4, the engaging portion (23) is retracted with the rod (26) retracted. Are fitted between the rollers (21), (21) (see FIG. 5). Thus, the moving body (11) is driven by the motor (14) to move the guides (28) and (29) along with the movement of the moving mechanism (12) along the guides (30),
It is moved along (31).

Numeral (55) is a cylinder provided on the side surface of the guide (30) for fixing the moving body (11) which is not used at standby positions at both ends of the supply table (10).
The rod (56) is raised by the driving of the cylinder (55), and the fitted portion (5) provided on the back surface of the moving body (11) is raised.
7) The mobile object (11) is fixed at that position by being stuck in.

A safety mechanism (34) for stopping the motor (14) when the adjacent moving bodies (11) collide with each other is described below. (35) is an operating pin which is pushed by the rightmost projection (36) when the moving body (11) shown by a two-dot chain line in FIG. 6 unexpectedly moves, and the operating pin (35) Is rotated about a shaft (39) against the urging force of a spring (38), whereby one end of the rotating piece (3) is attached to the rotating piece (3).
7), the other end of which is swingably attached to the base (40) of the moving body (11).
The swinging piece (41) supported by is moved in the direction of the arrow in FIGS. For this reason, since the shaft (42A) of the upper end of the rotating lever (42) pivoted to the base (24) is fitted in the concave portion (41A) of the swinging piece (41), as shown in FIG. The upper and lower metal rods (45), which are rotated about a shaft (43) and are in contact with one end of the lever (42) via a locking portion (44), are provided with springs (46). It is raised against the power. When 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, and the driving of the motor (14) is stopped by the CPU (68) described later.

(84) a shock absorber for buffering an impact when the moving bodies (11) collide with each other;
Since it is attached to both ends (lower left end, upper right end) of the moving body (11), when the adjacent moving bodies (11) collide with each other, the impact is prevented.

The position where the component in the component supply device (9) is taken out by the suction nozzle (4) is a suction station.
The part is 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 adsorbed on the nozzle (4), and the station where the device (51) is provided is a recognition station.

A nozzle rotation device (52) rotates the nozzle (4) via the head (3) based on the recognition result of the recognition device (51). This 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 next position after the nozzle rotation correction station is a mounting station, and the nozzle (4) sucking the component descends to mount the component on the substrate (6) on the XY table (5).

An operation unit (60) shown in FIG. 10 is a numeric keypad (61) for inputting data, a cursor key (62),
A SET key (64) for selecting and setting data displayed on the screen of the CRT (63) at the time of data input, a teach key (65) for entering various data input modes, and a start key (66) for starting operation. Etc.

(67) is an interface, and
Y-axis motors (10), (11), motor (14), cylinder (25), proximity sensor (48), cylinder (5
5), while the CRT (63) is connected, these are CPUs as a control device for controlling the mounting operation.
(68).

(69) is a RAM as a storage device for storing data relating to mounting, for example, various data such as types of printed circuit boards to be handled, and (70) is a ROM for 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 set on a component supply table (10) via a moving mechanism (12). That is, as shown in FIGS. 2 to 4, the moving body (11) is guided by guides (30) and (31).
It is moved up and positioned on the moving mechanism (12). Then, the rod (26) of the cylinder (25) is retracted, and the engaging portion (23) is rotated about the shaft (27) as shown by the solid line in FIG. 4 so as to be inserted between the pair of rollers (21). (See FIG. 5). You are now ready. For example,
As shown by a solid line in FIG. 2, two moving bodies (11) are installed on the moving mechanism (12) on the component supply table (10), respectively.
The following description is based on the assumption 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 of the moving mechanisms (12) is a motor (14)
Guide (28) along the screw axis (13) by driving
The moving body (11) is also guided and moved by the guides (30) and (31) as it moves while being guided by (29). Thereby, the desired component supply device (9) is moved to a predetermined position, and the component is taken out by the suction nozzle (4).

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

Based on the recognition result, the nozzle (4) is rotated via the head (3) by the nozzle rotating device (52) at the next nozzle rotation correcting station to correct the deviation in the Θ direction. The component in which the deviation has been corrected is mounted on the printed board (6) at a predetermined position in the next mounting station in consideration of the deviation in the XY directions.

In the following, if any one of the component supply devices (9) on the moving body (11) that is currently used and components are sequentially mounted and the component is cut out, the moving mechanism (1) is used.
2) is moved to the right end of FIG. 2, and the moving mechanism (12) which has been waiting at the left end is driven to continue the component supply operation to the nozzle (4). Then, during the supply operation by the left moving mechanism (12), the moving body (11) moved to the standby position at the right end has its rod (56) moved by the cylinder (55) to the fitted portion ( 57)
To fix the moving body (11), the operator removes the supply device (9) with the parts exhausted from the moving body (11), and attaches the supply device (9) in which the replacement parts are full. Can be.

Note that the arrangement of the moving bodies (11) is not limited to the above-described embodiment. For example, as shown in FIG.
A) and (11D) are fixed to the left end and the right end, respectively.
The moving body (11B), (11
C) may be attached, and parts may be 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. , (11B) and the mobile units (11C), (11B).
In the case where the arrangement of D) is the same, the moving object (1)
If the parts handled by the supply device (9) on 1D) are out of components and the supply device (9) on the moving body (11B) is not out of parts, for example, the moving body (12) is moved to the right moving mechanism (12). 11
If B) and (11C) are connected, the mounting device can be operated without stopping, which is convenient.

The movement of the moving mechanisms (12) and (12) is controlled by the CPU (68) with the moving body (11) mounted thereon, and their positions are grasped so as not to collide with each other. However, a safety measure in the event that the moving bodies (11) on the respective moving mechanisms (12) collide with each other will be described.

As shown in FIG. 6, the moving body (11) indicated by a two-dot chain line collides with the moving body (11) on the right side, and the protrusion (3)
6) pushes the operating pin (35), whereby the rotating piece (3) is pressed.
7) is rotated counterclockwise about the axis (39) against the urging force of the spring (38), and the swinging piece (41) is moved in the direction of the arrow (left direction) in FIG. As a result, the rotating 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 spring (46)
Is moved out of the detection allowable range of the proximity sensor (48) due to the urging force of the proximity sensor (48), and it is detected that the moving bodies (11) have collided with each other. Is stopped, and damage of the moving body (11) due to the collision is prevented. Also, the moving body (11)
Shock at the time of collision is buffered by individually provided shock absorbers (84). That is, as shown in FIG. 11, the moving body (11C) moved by the movement of the moving mechanism (12) to the moving body (11D) waiting at the rightmost standby position.
When a collision occurs, the shock is buffered by shock absorbers (84) provided on both moving bodies (11C) and (11D). In addition, the moving body (11) arranged adjacent to the moving body (11) arranged as shown in FIG.
When they collide with each other, the impact is reduced.

[0035]

As described above, according to the present invention, when the moving mounting tables collide with each other, the driving source can be stopped immediately, and the mounting tables can be prevented from being damaged. In addition, since the detection device for detecting that the adjacent mounting tables have collided with each other is attached to each of the moving mounting tables, for example, when the detection device is mounted outside the moving mounting table, the light beam may be extended. Although light must be transmitted over a distance, there is a risk of erroneous detection of the detection device, whereas the risk of erroneous detection of the detection device can be reduced.

[Brief description of the drawings]

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

FIG. 2 is a plan view of the 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 view showing an engagement mechanism.

FIG. 6 is a view showing a safety mechanism.

FIG. 7 is a partially enlarged view of FIG. 1;

FIG. 8 is a view showing a safety mechanism.

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

FIG. 10 is a configuration circuit diagram of the component mounting apparatus.

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 section (25) Cylinder (34) Safety mechanism (35) Operating pin (36) Projection (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)

(57) [Claims] 1. A component mounting apparatus for taking out a component supplied from a component supply device with a take-out tool and mounting the component supply device on a printed circuit board. preparative to the respective mounting table in order to detect that a drive source each independently moved horizontally by being guided by the guide, the table between the placing of neighboring was collide
A component mounting device, comprising: a detection device attached thereto; and a control device that controls the drive source to stop based on a signal from the detection device.