JPH0680931B2 - Electronic component supply mechanism - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component mounting apparatus for mounting electronic components on a printed air board, and more particularly to a cylindrical magazine for stacking and storing a plurality of electronic components. The present invention relates to an electronic component supply device for intermittently supplying electronic components one by one.

(B) Conventional Technology As shown in Japanese Utility Model Publication No. 59-121897, which is an example of supplying electronic parts using a cylindrical magazine, a stopper for sealing the electronic parts in the magazine is installed from below the magazine. It is said that the lower surface of the stopper is pushed up by a push-up pin by the thickness of the electronic component and one electronic component is raised to the surface above the magazine where the electronic component is suctioned, and the suction means sucks and conveys the one electronic component. By repeating the above operation, the electronic components in the magazine are supplied one by one.

(C) Problems to be Solved by the Invention In the above-mentioned conventional example, the detection when the magazine becomes empty is not described, but the electronic parts in the magazine are
In the method of supplying electronic parts that are intermittently pushed up individually via the stopper, the suction means must be adjusted unless the upper limit stroke of the pressing means is adjusted in response to variations in the thickness of stoppers in general commercial magazines. As a result, there is a problem in that not only electronic parts but also stoppers are adsorbed.

(D) Means for Solving Problems The present invention has been made in view of the above points,
In the component supply mechanism that sucks the components from the upper end of the magazine by the vacuum suction means and supplies the components to a desired position while pushing up a large number of electronic components arranged in the magazine by the component holder, the upper surface of the holder. Communication means for communicating the suction part of the suction means with the outside air when the vacuum suction means abuts, discharge means for discharging a magazine in which the component is empty, and vacuum detection means for detecting the vacuum state of the vacuum suction means. When the vacuum suction means has sucked the holding body, the communication means communicates with the outside air to control the discharge means to discharge the magazine when the vacuum detection means detects a decrease in the degree of vacuum. And control means.

(E) Operation While the electronic parts in the magazine are present, the vacuum suction means picks up the parts at a predetermined suction position and the vacuum level of the suction means rises. Contacting the upper surface of the holder at the suction position, the suction portion of the suction means communicates with the outside air through the communication means, and when the vacuum detection means detects a decrease in the degree of vacuum, the magazine is discharged by the control means by the control means. Is discharged by.

F) Embodiment FIG. 3 is a top view of the electronic component supply mechanism of the present invention, FIG. 4 is a side view thereof, and FIG. 5 is a sectional view taken along line AA of FIG. In these figures, (1) is a cylindrical magazine, (2) is a first guide, (3) is a second guide, (4) is a third guide, and (5) is the feed of the magazine. Cylinder, (6)
Is a pusher, (7) is a stopper, (8) is a discharge cylinder as a discharge means, (9) is a first spindle attached to the stopper, and (10) is a second cylinder attached to the discharge cylinder. A spindle, (11) is the first spindle and the second spindle.
Is a discharge lever that is pivotally supported by a spindle. Reference numeral (12) denotes a return cylinder as a pressing means for pressing the magazine in which the supply of all the electronic components has been completed in the direction opposite to the transport direction, which is penetrated through the hole provided in the stopper (7).

Next, the operation of such an electronic component supply device will be described. The electronic component supply position shown in FIGS. 3 and 4 is pushed to the stopper (7) by the pusher (6) at the tip of the feed cylinder (5) and positioned at the right end. In the magazine, the electronic components are supplied one by one to the upper part of the magazine by a push-up bin (not shown) which pushes up the electronic parts in the magazine from the lower side of the magazine, and one by the suction nozzle (not shown). Adsorb each one and carry.
After completing the supply of all electronic components in the magazine,
The feed cylinder (5) is retracted to pusher (6)
After the free cylinder is returned, the return cylinder (12) presses the magazine in the direction opposite to the transport direction, that is, in the direction of the arrow in FIG. 4 to form a gap between the stopper (7) and the magazine, and then the discharge cylinder. Drive (8) downward to move the second
Spindle (10) descends, the ejection lever (11) rotates clockwise around the first spindle (9), and continues to rotate until the ejection of the magazine is completed. The discharge cylinder (8) is driven upward to return the discharge lever (11) to the original position.

Next, the feed cylinder (5) is driven in the magazine transport direction to feed the magazine, and the magazine adjacent to the left side of the ejected magazine in FIGS. 3 and 4 is fed to the electronic component feeding position. The above is one cycle of the operation of the electronic component supply apparatus, and this operation is repeated.

FIG. 1 shows a structure for supplying electronic components from a magazine (1) pressed against a stopper (7). (13) is an electronic component, and (14) is an electronic component that seals the inside of the magazine (1). Is a stopper having the function of a holding body for holding the inside of the magazine (1), and is locked by friction with the inner wall of the magazine (1). (15) is a suction nozzle as suction means, and (16) and (16) are through-holes provided on the surface of the stopper (14), which are electronic parts (1) in the magazine (1).
When 3) is not present, the suction operation of the suction nozzle (15) causes the suction nozzle (15) to come to the position of the through hole (16). (17) is a component position sensor consisting of a pair of light emitting and receiving elements, (18) is a push-up bin as a pressing means, (19) is a push-up pin position sensor as a pressing means position sensor, and (20) is the suction nozzle. It is a vacuum sensor that detects the suction state. (twenty two)
Is a valve for connecting and disconnecting the vacuum pump (21) and the suction nozzle (15), and (23) is position control means for controlling the vertical and horizontal positions of the suction nozzle (15),
The valve (22) is opened when the suction nozzle (15) is lowered at the component suction position, and the valve (22) is closed when the suction nozzle is lowered at the component mounting position.

To explain the operation in such a supply structure, a push-up pin (18) is driven by a motor (not shown) to move upward, press the lower surface of the stopper (14), and move the electronic component (13) in the magazine (1) upward, When the component position sensor (17) detects that the electronic component (13) has reached the suction position, the motor drive is stopped, and the suction nozzle (15) is lowered by the control of the position control means (23) and the valve ( 22) is opened to suck the component (13), and after confirming that the vacuum sensor (20) has correctly sucked the component, the suction nozzle (15) is raised by the control of the position control means (23), The parts (13) are transported.

By repeating the above operation, the electronic components (13) are supplied one by one, and the push-up pin position sensor (19) detects the predetermined position of the push-up pin (18) so that the magazine ( It is detected that the number of electronic components (13) in 1) has decreased.

When all the electronic components (13) are supplied from the magazine (1), the suction nozzle (15) penetrates the surface of the stopper (14) as shown in FIG. 2 during the next suction operation of the suction nozzle (15). Since it is lowered into the hole (16), a vacuum defect can be detected by the vacuum sensor (20) even when the valve (22) is opened. Then, the control means (not shown) controls the ejection cylinder (8) which is the ejection means to eject the empty magazine (1) by the above-mentioned operation.

G) Effect of the Invention As described above, in the supply mechanism of the electronic component of the present invention, when the vacuum suction means comes into contact with the upper surface of the holder, the suction means of the suction means communicates with the outside air, and the vacuum suction means. And a vacuum detecting means for detecting the vacuum state of the vacuum suction means, wherein the vacuum detecting means detects a decrease in the degree of vacuum by communicating with the outside air by the communicating means when the vacuum suction means sucks the holding body. Since the control means controls the ejection means to eject the magazine, it can be confirmed accurately and with a simple structure that the magazine is empty, and the magazine can be ejected smoothly without waste.

[Brief description of drawings]

1 and 2 are explanatory views for explaining the operation of the main part of the supply mechanism for an electronic component of the present invention, FIG. 3 is a top view showing the overall configuration of the present invention mechanism, and FIG. 4 is the overall configuration of the present invention mechanism. FIG. 5 is a sectional view taken along line AA in FIG. (1) …… Magazine, (2) (3) (4) …… Guide,
(5) …… Feed cylinder, (6) …… Pusher,
(8) …… Discharge cylinder, (9) (10) …… Support shaft, (1
1) …… Discharge lever, (12) …… Return cylinder, (13)
...... Electronic parts, (14) …… Stopper, (15) …… Suction nozzle, (16) (16) …… Through hole, (17) …… Part position sensor, (18) …… Push-up pin, (20 ) …… Vacuum sensor, (21) …… Vacuum pump, (22) …… Valve, (23)
...... Position control means.

Claims (1)

[Claims] 1. A component supply mechanism for sucking a component from a top end of a magazine by a vacuum suction means and feeding the component to a desired position while pushing up a large number of electronic components arranged in a magazine by a component holder in predetermined steps, When the vacuum suction means comes into contact with the upper surface of the holder, a communication means for communicating the suction part of the suction means to the outside air, a discharge means for discharging the magazine in which the component is empty, and a vacuum state of the vacuum suction means are detected. When the vacuum detection means detects a decrease in the degree of vacuum by communicating with the outside air by the communication means when the vacuum suction means adsorbs the holding body, the ejection means ejects the magazine. A supply mechanism for an electronic component, comprising: a control unit that controls the discharge.