JPH01123500A - Parts supplying equipment - Google Patents

Abstract

PURPOSE:To exactly detect the existence of parts in a magazine, by counting the number of electronic parts supplied from the magazine, and comparing it with a specified number. CONSTITUTION:A magazine 7 accommodates a specified number of electronic parts. Several stages of the magazines are stacked on a magazine stocker 6. From the lowest stage magazine, electronic parts are supplied to a fixed chute 8. A stopper 10 releases the electronic parts one by one, and supplies it to a conveying means 11, which carries it to a parts fixing equipment not shown. Whenever one piece of parts is carried, a counter not shown performs counting operation. In the case where the counter does not show a specified number, when a sensor 9 detects that there are no parts on a joint part of the magazine 7 and the chute 8, it is judged that clogging of parts has occurred in the magazine 7. Therefore, such a misjudgment exhibiting the absence of parts resulting from the detection by the sensor 9, regardless of the fact that parts are still existing in the magazine 7, never occurs.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a means for detecting clogging of parts in a magazine, which tends to occur in the free fall method.

(Of Prior Art) In recent years, electronic component mounting devices that automatically mount components onto printed circuit boards have been developed.One method of supplying electronic components to such a mounting device is as follows. , Multiple magazines containing electronic components are stacked, and the electronic components arranged and packed in the magazine at the bottom are fed to the fixed shade section by gravity, and one electronic component is delivered from the lower end of the fixed chute. In addition to escaping and supplying one magazine, a sensor attached to the upper end of the fixed chute detects the availability of electronic components, and - if the state without electronic components continues for a certain period of time, the lowest magazine is When it is determined that the magazine is empty, the lowest empty magazine is automatically ejected using the magazine escape mechanism, the next magazine prepared in the magazine stopper is automatically set, and the electronic components are supplied from this magazine to the fixed shade section and the components are supplied. made it possible to continue.

(c) Problems to be solved by the invention However, with this method, even if electronic components become clogged within the magazine, an empty determination is made, and the magazine is ejected with the electronic components remaining in the magazine. There was a problem that this could result in a waste of parts.

B) Means for solving the problems The present invention has been made in view of these points, and includes:
It has a counter that counts the number of electronic components supplied from the magazine, and a comparison means that compares whether the count value of this counter has reached a predetermined value.

(E) Function Since the failure of electronic parts supplied from the magazine is counted, it is possible to accurately detect when a part is missing from the magazine, and the inconvenience of ejecting the magazine with parts remaining can be prevented. be done.

(v) Embodiment FIG. 1 is a perspective view showing an embodiment of the parts supply device of the present invention.
In such a component supply device, (1) a component supply section that sequentially supplies components from a magazine containing #'lt electronic components, and (2) an XY component that moves a vacuum chuck (5).
The table part (3) is a board positioning part for positioning and fixing the board, (4)! -f This is a board transport section that carries in and out the board.

FIG. 2 shows a side view of the parts supply section (1), and (6)
(7) A magazine stocker in which multiple tiers of magazines (7) are stacked, (8) a fixed chute portion to which electronic components arranged and packed are supplied from the magazine (7) at the bottom of #-1, (9)
) is a sensor that detects the presence or absence of electronic components at the bottom magazine outlet and at the top of the fixed chute.
αQ is a stopper that prevents the electronic components from falling and escapes them one by one, and αD is a moving means that moves the escaped electronic components to the pick-up position, and the rotating lever (2) is rotated. Therefore, branch 1
31, and the electronic component is moved to the pickup position as shown in FIG. α4) is an ejection mechanism that ejects the lowest empty magazine.

FIG. 4 is a block diagram of such a parts supply device,
The same parts as in FIGS. 1 and 2 are given the same reference numerals.

In the same figure, α51#i substrate positioning drive unit, αe#
: Board transfer drive unit, α? 1FiX Y table drive unit and α81Fi vacuum chuck positioning drive unit, which drive the substrate positioning unit (3), substrate transport unit (4), XY table unit (2), and vacuum chuck unit (5), respectively.

α Yu is the interface, Sono is this interface (
A central processing unit (hereinafter referred to as CPU) (21
+ indicates NO data and the number of electronic components in the magazine (7) is ξ
In the stored memory, 2 indicates an address counter for indicating the address of the NO data, which is counted up one step at a time. (to) is the interface (2 stations are the combiator main body, (2511Ii start switch, @ is the keyboard for teaching the fault of the electronic components stored in the magazine, these are the computer main body (24) to the keyboard is tied to the upper ε interface.

The operation of such a component supply device will be explained. First, set the number of parts in the magazine (7) in the memory by operating the keyboard (to), and then press the start switch (to).
) and feed the printed circuit board onto the board positioning part (3). After the address counter is cleared, electronic components are fed while incrementing this address counter one by one. The parts are taken out from the magazine (7) set in the part, and mounted on the printed circuit board at the position indicated by the NO data corresponding to the contents of the address counter. That is, every time the address counter increases by 1, the stopper QO is activated in the state shown in FIG.
escapes the parts one by one and drops them to the parts placement position of the moving means I, and in that state operates the rotating lever port to place the moving means (111 in a parallel state and move the
The vacuum chuck part (5) is moved by the operation of the Y table part (2).
is moved to the component mounting position of this moving means I and the component is sucked. Then, the thus sucked component is transported to the position on the printed circuit board indicated by the NO data corresponding to the contents of the address counter, as described above. A flowchart showing such a component mounting operation is shown in FIG.

Moreover, each time such a component is taken out one by one, the CPUj subtracts 1 from the electronic component fault set in the memory (2). On the other hand, the sensor (9) checks the effectiveness of the electronic components by checking the state of light conduction at the closed end between the outlet of the lowermost magazine (7) and the upper end of the fixed chute. Therefore,
As shown in Fig. 6, when the lowest magazine (7) is full, the number of parts in the memory Qυ is subtracted as electronic parts are taken out, and when the contents of the memory (211) become 0, the sensor (
When the light from 9) is conducted and the parts are heated and detected, it is recognized that the electronic parts in the lowest magazine (7) have been completely ejected, as shown in Figure 7, and the empty magazine (7) is removed. Ejection mechanism 0
Eject and create a new magazine (7) by controlling a.
Set.

On the other hand, if electronic components become jammed in the magazine (7) as shown in Figure 8, the sensor (9) will not be able to conduct light until the number of components set in the memory r211 counts down to 0. is detected and the lowest magazine (7
) is prohibited from being discharged, and an abnormality is notified by means of lamps, buzzers, etc. Further, at this time, it is also possible to apply vibration to the magazine using a vibrating means or the like to eliminate clogging of the parts. On the other hand, if a blockage occurs in the fixed chute (8), take note! Even if the number of parts set in J-I 211 reaches 0, the presence of parts is detected by the sensor (9). At this time too,
Similarly to the above, ejection of the lowest magazine (7) is prohibited, and an abnormality is notified by a lamp or a buzzer (support).

Incidentally, FIG. 9 shows the flow of the detection operation for detecting such part clumping.

(G) Effects of the Invention As described above, the component supply device of the present invention includes a counter that counts the number of electronic components supplied from the magazine, and a comparison means that compares whether the count value of this counter has reached a predetermined value. Since it has this count value, it is possible to accurately detect that there are no parts in the magazine, and it is possible to prevent the inconvenience of ejecting the magazine with parts remaining.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the parts supply device of the present invention, FIGS. 2 and 3 are side views for explaining the operation of the parts supply unit,
Fig. 4 is a block diagram of the parts supply device of the present invention, Fig. 5 is a flowchart showing the operation of parts mounting, Figs. 6 to 8 are side views showing the parts supply operation, and Fig. 9 is part clogging detection. It is a flowchart showing the operation. (1)...Component supply section, (2)...XY table section, (3)...Substrate positioning section, (4)...Substrate transport section, (5)...Vacuum chuck, ( 6)... Magazine stocker, (8)... Fixed chute, (9) (9)
...Sensor, α4...Stopper, (IB...Moving means, ■...Rotating lever, 041...Ejection mechanism, f
il(2m...Interface, ■...CPU%
C...Memory, ■...Address counter, 124)
・・・Computer body, 3 river start switch, ■・
...keyboard, punishment...lamp, ■...buzzer.

Claims (1)

[Claims] (1) Has multiple magazines containing a large number of electronic components,
When electronic components are taken out from one magazine and the electronic parts in this magazine become empty, the component supply device that takes out parts from another magazine has a counter that counts the number of electronic parts supplied from the magazine. , and comparison means for comparing whether the count value of the counter has reached a predetermined value.