JPH02190231A - Part feeder - Google Patents

Abstract

PURPOSE:To inform an operator of starving in part in advance so as to be replenished by permitting a counter which is provided in corresponding to the kind of parts, to be added or substracted every time when a part is taken out of a tray, and thereby informing the operator of the time when counting by a counter amounts to a specified one. CONSTITUTION:When the elevator 5 of a part feeder 1 is moved vertically so that it is stopped over a position where a tray 3 housing the part 2 of a chip in, is drawn out, a plate 4 on which the tray 3 is rested, is drawn out by a tray draw-out pawl 10, an adsorption head 20 is moved to a position designated by a tray matrix so that the part 2 of the chip is absorbed so as to be installed onto a printed circuit base board (not shown). In this case, (1) is subtracted from the remaining number of the part 2 of the chip within the RAM 37 and the remaining number of the total of the part. When the remaining number of a kind of parts within the tray 3 is agreed with the remaining number notified in advance on starving in part, which is detected by the CPU 36 so that an illumination type tray set affirmation switch 29 is flashed in order to let an operator be informed of what has happened.

Description

Detailed Description of the Invention (a) Industrial Application Field A plurality of plates for storing trays on which parts of the same type are placed are prepared corresponding to plural types of parts, and these are stored in multiple stages, and an elevator is used. The present invention relates to a component supply device that allows a desired plate to be raised and lowered to a take-out position, draws out the plate positioned at the take-out position by a pull-out device, and supplies the plate to a mounting device for mounting the component on a printed circuit board.

(B) Conventional technology The conventional technology for this type of component supply device does not have a function to predict that the component will run out, so when trying to suck the component with the suction head to supply the component to the mounting device, a suction error may occur. It was only when the worker looked inside the tray that he realized that the parts were out of stock.

(c) Problems to be Solved by the Invention Therefore, it is an object of the present invention to provide an operator with advance notice of the out-of-parts so that the operator can replenish the parts before the parts run out and an abnormal removal occurs.

(2) Means for Solving the Problem To this end, the present invention provides a plurality of plates for storing trays on which the same type of parts are respectively placed, corresponding to a plurality of types of parts, and stores the plates in multiple stages. and a component supply device which allows a desired plate to be raised and lowered to a take-out position by an elevator, and which draws out the plate positioned at the take-out position by a pull-out device and supplies the plate to a mounting device for mounting the component on a printed circuit board. a counter provided corresponding to the type of each component in order to add or subtract "1" each time a component stored in each tray is taken out; and at least one counter that has a predetermined number of contents. This system is equipped with a notification means for notifying the user when the current level has been reached.

In addition, the present invention prepares a plurality of plates for storing trays on which the same type of parts are placed, each corresponding to a plurality of types of parts, stores the plates in multiple stages, and allows a desired plate to be raised and lowered to a take-out position using an elevator. The plate positioned at the take-out position is pulled out by a pull-out device and stored in each of the trays in a component supply device that supplies the plate to a mounting device that mounts the component onto a printed circuit board. A counter is provided corresponding to the number of each plate in order to add or subtract "1" each time a part is taken out, and a notification means is provided to notify when the contents of at least one or more counters reach a predetermined number. It is something that

(E) Function According to claim 1, each counter performs ``1. addition or subtraction every time a corresponding type of component is taken out from the tray, and the notification means is configured to indicate that the contents of at least one counter are If the predetermined number is reached, a notification will be made.

According to claim 2, each counter adds or subtracts ``rl'' each time a component is taken out from a tray in a corresponding plate, and the notification means is configured to notify when the contents of at least one counter have reached a predetermined number. If so, let me know.

(f) Examples Examples of the present invention will be described below with reference to the drawings. In FIG. 1, FIG. 2, and FIG. 3, (1) is a component supply device to which the present invention can be applied. (2) is a chip component mounted on a printed circuit board (not shown), and (3> is a chip component (2)
) is a tray for placing and storing items.

(4> is a plate on which the tray (3) is fixedly placed, and an upwardly rising piece is formed at the end thereof as shown in FIG. 4. (5) is a plate on which the tray (3) is fixedly placed. (
This is an elevator that can be raised and lowered, and is provided with plate storage grooves (6) in multiple stages (20 stages in this embodiment) so that plates 4) can be loaded. (7) is a pair of elevator raising/lowering screws passing through a nut part (8) provided on the side surface of the elevator (5). ).

(10) is attached to the belt (11), and the belt (10) is attached to the belt (11).
1) and sprockets (12) A tray drawer type driven by a traverse drive part (13) shown in FIG. It is possible to reciprocate. As shown in FIG. 4, the tray drawer mold (10) includes a fixed piece (15) and a rotating piece (17) that is rotatable about a support shaft (16) with respect to the fixed piece (15). The fixed piece (15) and the rotating piece (
The rotating piece (17) is biased in the direction of closing the tray drawer mold (10) by the drawer type spring (18) stretched between the drawer type cylinders (19) and the drawer type cylinder (19) The rotating piece (17) is rotated clockwise against the biasing force.

When pulling out the tray (3), press the cylinder (
19) is being attracted, and the rotating piece (17) is rotated counterclockwise by the biasing force of the spring (18), and is fitted into the rising piece formed at the end of the plate (4), so that the tray When the storage of (3) into the elevator (5) is completed, the cylinder (19) will protrude and the plate (4) will open the tray pull-out claw (lO
) will be more liberated.

(20) is a guide shaft (2) horizontally suspended between sliding bodies (22) (22) sliding on guide rails (21) (21).
3) is a P&P (pick and place) suction head that can move in XY by sliding through the tray (3) on the plate (4) pulled out by the tray pull-out claw (10). The chip component (2) is sucked and taken out and placed on the chip positioning section (24). (27) is an elevator door that opens and closes when replacing the tray (3) loaded in the elevator (5), and (28) is the elevator door (28).
7) is opened, the lowering of the elevator (5) and the operation of the tray pull-out claw (10) are stopped, and the operation of the door (27) is started when the door (27) is closed. This is a door opening/closing sensor that detects opening/closing.

(29) is an illuminated tray set confirmation switch provided corresponding to each tray (3) in the elevator (5).
It flashes when the remaining number of stored chip parts (2) is less than the set quantity, and lights up when the remaining number reaches r□, and it is pressed after replacing the tray (3). This will turn off the light.

(30) is a tower light having two types of lamps, yellow and red, and one type (2) of several types of chip parts (2) stored in each tray (3) in the elevator (5). When the remaining number of chip parts (2) in the tray (3> is 20, but the number of parts is 6 and one of them is less than the set number remaining), the yellow lamp lights up, and when the number remaining is 10, the light turns red. The lamp lights up.

(31) is a keyboard for setting the remaining number of chip parts (2), etc., which causes the tray set confirmation switch (29) to blink to warn of material shortage at each stage. (32) is a vacuum chuck (X, Y,
movable in the Z direction), vacuum-chucks the chip component (2) positioned by the chip positioning section (24),
It is attached to a printed circuit board (not shown).

In Figure 5, (35) is a ROM that stores the program.
(36) is a CPU, which performs given control related to various data settings and control related to supply of the chip component (2) based on various information in response to operations on the keyboard (31). (37) is a RAM that stores setting information etc. from the keyboard (31). (3B) is a CRT that displays various information on the screen. (39) is an interface, which includes an elevator drive unit (9) and a traverse drive unit (1
3), Pull-out claw cylinder (19), Positioning drive unit (40)
, vacuum chuck drive unit (41), P&P drive unit (42)
etc. are connected.

Next, various data setting operations will be described.

First, operate the keyboard (31) and select C shown in FIG.
Display the RT screen. On this screen, the teeth indicate the number corresponding to each stage of the elevator (5) (hereinafter referred to as the stage number); if it is Not, it indicates that the tray (3) is the top stage), TYPE and In the displayed item, a number (hereinafter referred to as part number) indicating the type of chip component (2) is displayed. (XN.

YN) contains the chip parts (
A matrix (hereinafter referred to as tray matrix) representing the position of MAX (XN) is displayed.

YN) can display a matrix (hereinafter referred to as maximum matrix) indicating the maximum rows and columns in which the chip component (2) can be stored in the tray (3). Although there are only 10 trays (3) on this screen, the remaining 10 trays can also be displayed by operating the keyboard (31). EMPTY
2 displays the remaining number of material cutoff notices, which is set for each stage of the elevator (5) and indicates the remaining number of chip parts (2) when a material cutoff notice is issued. In WORKS2, the chip parts (
2) quantity (hereinafter referred to as the number of parts remaining) is displayed. P
When the remaining number of chip parts (2) in each tray (3) falls below the set number of material cutoff notices, rE is displayed in REAN, and if the tray (3) in question is currently in use, - "*" is displayed. can be displayed.

The CPU (36) and the RAM (37) provide a subtraction counter corresponding to each tray (3) to grasp the remaining number of parts in the tray, and a subtraction counter for each chip part (2) to grasp the remaining number of parts in the tray. Configure a subtraction counter to keep track of the remaining number for each time. Therefore, the CPU (36) subtracts the content of each remaining number corresponding to each component removal operation from the tray (3) by 1, stores the content after the subtraction in the RAM (37), and stores the content after the subtraction in the RAM (37).
The RT (38) is controlled to display the content after the subtraction. Further, this subtraction counter may be a hardware counter instead of the program counter as described above, or may be incremented by 11'' every time a component is taken out.

Next, operator 0, who will explain how to set the part number, uses the keyboard (31) to select the trays for each stage of the elevator (5).
A cursor (43) is displayed for each stage number of TYPE on the screen corresponding to the type of chip component (2) stored in 3).
Enter and display the part number while moving. As a result, the part number corresponding to the tray (3) is stored in a predetermined area of the RAM (37).

Therefore, '1''10. rll, r5. '40J'50
．． This indicates that six types of parts (2) are handled, and the third and fourth stages of the elevator (5) both indicate the type ``i o''.

However, "10" is a stage that is not used (a stage that does not contain a tray)
shows.

The setting of the remaining number of material cutoff notices for each tray (3) will be explained.

The operator moves the cursor (43) using the keyboard (31) and inputs and displays the remaining number of material cutoff notices for each stage number of EMPTY2. This results in RAM (3
The remaining number of material cutoff notices for each tray (3) is stored in a predetermined area of 7).

The setting of the tray matrix representing the position of the chip component (2) to be taken out next in each tray (3) will be explained.

This is done if the tray (3) is not full. Move the cursor (43) using the keyboard (31) and input and display the tray matrix corresponding to the position of the chip component (2>) to be taken out next for each stage number (XN, YN). The position of the chip component 2) to be taken out next is stored in a predetermined area of .

Once the part number has been entered as mentioned above, the RAM (37)
Since the maximum matrix corresponding to each part number has already been stored in MAX (XN, YN), the maximum matrix is immediately displayed in MAX (XN, YN). Again (XN, YN)
The tray matrix of is in the initial state (1, 1). Also, when the chip component (2) runs out of material, the tray (3) is replaced, and the tray set confirmation switch (29) is pressed, the tray matrix will return to the initial state (1, 1).
)become. When a chip component (2) is taken out from one tray (3), the tray matrix of the corresponding stage number is the next part to be taken out (2) at (XN, YN).
The tray matrix is changed to represent the position of the tray matrix.

The number of remaining parts displayed on WORKS2 is subtracted by 1 each time a part is taken out from the tray (3) by the subtraction counter as described above. Also, when the tray set confirmation switch (29) is pressed after replacing the tray (3), the remaining number when full calculated from the maximum matrix is displayed. When the tray matrix is set again, the CPU (36) displays the corresponding remaining number.
This remaining number is also stored in a predetermined area of the RAM (37).

Next, operate the keyboard (31) again to display the CRT screen shown in FIG. On this screen, TYPE
The part number that cannot be displayed in Fig. 6 is displayed, and even if the same chip part (2) is stored in several trays (3) of the elevator (5), each part number is The remaining number of parts that has been totaled by the CPU (36) (this data is referred to as the total number of remaining parts) can be displayed in the WORKSI item. This is subtracted by the subtraction counter as described above and stored in the RAM (37).

The remaining number of material cutoff notices for this total number of remaining parts is EMPT
This is displayed in the Yl item and is set by the operator. When setting the remaining number of material cutoff notices, the main mounting equipment (33
) If the component mounting program (NC program) is set on the side, the CPU (36) automatically calculates the number of components (2) to be mounted on the printed circuit board and displays it in () on this screen. EMPTY WORK at the bottom of the screen.
S/P, C.

If you move the cursor (43) to B and enter a number indicating the number of printed circuit boards for which material outage notice is to be given, for example "2", the remaining number of material outage notices for which the type of part (2) is "rlo" will be ( ) is the number "5" multiplied by the number of printed circuit boards, and "10" is displayed in EMPTYl, and RAM
(37), and the same applies to other parts.

In this example, the remaining number of materials cut-off notices is set in EMPTYI by multiplying the number of used parts to be mounted on one board by the number of boards, but this is not limited to this, and it can be set arbitrarily depending on the number of parts (2). You may also set it.

Furthermore, in this embodiment, each plate (4) has one tray (3).
) is placed thereon, but a plurality of trays (3) may be placed thereon.

Also, an audible notification device may be used to notify the material shortage of the part (2). In this case, by changing the interval between beeps, etc., it is possible to distinguish between the notification when the set amount is reached and the notification when the remaining amount reaches r□.

Further, the screen of the CRT (3B) is normally as shown in FIG. 7, so that the state of material shortage for each part (2) can be immediately known.

The operation of the above configuration will be explained below.

First, the elevator (5) of the component supply device (1) is the main mounting bag! Based on the part number of the chip component (2) requested by (33), the corresponding chip component (2) is raised and lowered by the elevator drive unit (9) via the elevator lifting screw (7) and the nut part (8). Tray (3) containing
It stops at the position where it is pulled out.

The protruding pull-out claw cylinder (9) is sucked so that the tray pull-out claw (10) pulls out the plate (4) on which the tray (3) is placed from the plate storage groove (6). The pivot piece (17) is moved by the spring (18) to the support shaft (
16) as a fulcrum, and fits into a rising piece formed at the end of the plate (4).

Since the tray pull-out pawl (10) is attached to the belt (11), it is driven by the traverse drive unit (13) and pulls out the plate (4) via the sprocket (12) (12) and the belt (11). .

Here, the P&P suction head (20) is attached to the guide rail (21).
), moves XY to the position specified in the tray matrix via the sliding body (22) and guide shaft (23), picks up the chip component (2) placed on the tray (3), and determines the chip position. Transfer the part 2) to the section (24).

When the chip positioning section (24) positions the component (2) using the positioning drive section (40), the vacuum chuck (32) driven by the vacuum chuck drive section (41) moves the component (2). It is adsorbed and attached to a predetermined position on a printed circuit board (not shown).

At this time, the tray matrix corresponding to the tray (3) being worked on is stored in a predetermined area in the RAM (37).
It is changed to indicate the position of the next component (2), and at the same time, the remaining number of the corresponding chip component (2) is subtracted by "1". The screen shown in FIG. 6 has been similarly changed.

Furthermore, the total remaining number of parts for the corresponding part is also subtracted by 11''.

Next, when the main mounting device (33) requests the chip component (2) that has been completely stored in another tray (3), the tray pull-out claw (10) moves the plate (4) by the traverse drive unit (13). After inserting into the plate storage groove (6), the pull-out claw cylinder (19>) projects and rotates the rotating piece (17) to release the plate (4) from the tray pull-out claw (10).Then, the elevator (5) is the part to be installed next (2
) is raised and lowered so that the tray (3) containing the tray (3) comes to the pull-out position, and as described above, the tray (3) is pulled out and used.

In this way, all the chip parts (2) are taken out from each tray (3), and the number of chip parts (2) in each tray (3) gradually decreases, but the CPU (3B) always takes out the chip parts (2) from each tray (3).
The total number of remaining parts for each chip component (2) and the total number of remaining parts for each chip component (2) are monitored. When the number of parts remaining in the tray (3) matches the number of remaining parts in the set material cutout notice, the CPU (
36) detects this, flashes the corresponding illuminated tray set confirmation switch (29), and displays the PRE screen in Figure 6.
r E is displayed at the position of the corresponding stage number of the AN, and the operator is notified of this fact.

The switch (29) continues to blink even though more parts (2) are taken out from the tray (3), and "E" continues to be displayed on PREAN in FIG.
) is exhausted from the tray (3), the CPU (36) turns on the switch (29). When the switch (29) is blinking, the operator can
It turns out that the tray (3) corresponding to the part (3) is almost out of material, and the tray (3) is replaced with one that is full of parts (2). When the worker opens the elevator door (27) for this replacement, the door opening/closing sensor (28) detects this, and the CPU (36)
to stop. When the operator presses the tray set confirmation switch (29) after replacing the tray (3), the switch (29) turns off, the tray matrix data stored in the RAM (37) is initialized, and (
1, 1), the number of remaining parts is changed to the quantity corresponding to the maximum matrix, and r E of the PREAN item is deleted on the screen shown in FIG. C.P.
U (36) also increases the total number of remaining parts of the corresponding chip component (2) by an amount corresponding to the increase in the number of remaining parts.

If the tray (3) to be replaced is not full, the operator sets the tray matrix at the position of the chip component (2) to be taken out first. The CPU (36) changes the number of remaining parts and the total number of remaining parts in accordance with the tray matrix.After this, when the operator closes the elevator door (27), the elevator (5) resumes its lifting and lowering operations, and the chip parts (2) ) continues to be supplied.

In addition, when the total number of remaining parts for a certain part (2) matches the remaining number of material cutoff notices set on the screen in Figure 7, r E is displayed at the corresponding part number position of PREAN on the screen in Figure 7. At the same time, the yellow lamp of the tower light (30) lights up, and when the total number of remaining parts reaches 0.
30) red lamp lights up.

The tower light (30) may be replaced with the tray (3) in which the part (2) is stored, after confirming whether the tower light (30) is no longer sufficient.

After replacement, press the tray set confirmation switch (29) corresponding to the replaced tray (3) in the same way as above, and the CPU (
36), the tray matrix, the number of remaining parts in tray (3), and the total number of remaining parts are changed, PREAN's "rE" is deleted, and the tower light (30) is turned off. In addition, the red lamp of the tower light (30) lights up, and one type of chip part (2
) runs out, the other chip component (2) to be mounted as is on the printed circuit board (not shown) on which the chip component (2) is being mounted, without the operator having to replenish the parts. continues to be supplied and installed. Of course, in this case, the component supply device (1) and the main mounting device (
33) may be stopped and restarted after replenishment.

(g) Effects of the Invention As described above, the present invention allows the operator to be notified of the out-of-parts and to replenish the parts before the parts run out and an abnormal removal occurs.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the parts supply device of the present invention, FIG. 2 is a side view of the main parts of the device, FIG. 3 is a diagram showing the mechanism of the elevator, and FIG. 4 is a side view showing the structure of the tray pull-out claw. FIG. 5 is a control block diagram showing one embodiment of the present invention, and FIGS. 6 and 7 are diagrams showing CRT screens. (1)...Component supply device, (2)...Chip components, (3)...Tray, (4)...Plate, (5)
...Elevator, (10)...Tray drawer claw,
(20)...P&P suction head, (32)...vacuum chuck, (33)...main mounting device, (36)
...CPU, (37) ...RAM.

Claims (2)

[Claims] (1) Prepare a plurality of plates for storing trays on which parts of the same type are placed, each corresponding to a plurality of types of parts, store the plates in multiple stages, and enable a desired plate to be raised and lowered to a take-out position using an elevator; In a component supply device for pulling out the plate positioned at the take-out position by a pull-out device and supplying the component to a mounting device for mounting the component on a printed circuit board, the components stored in each tray are A counter is provided corresponding to the type of each part in order to add or subtract "1" each time it is taken out, and a notification means is provided to notify when the contents of at least one counter reach a predetermined number. A parts supply device featuring: (2) A plurality of plates are prepared for storing trays on which the same type of parts are placed, each corresponding to a plurality of types of parts, and these are stored in multiple stages, and a desired plate can be raised and lowered to a take-out position by an elevator; In a component supply device for pulling out the plate positioned at the take-out position by a pull-out device and supplying the component to a mounting device for mounting the component on a printed circuit board, the components stored in each tray are A counter is provided corresponding to the number of each plate in order to add or subtract "1" each time it is taken out, and a notification means is provided to notify when the contents of at least one or more counters reach a predetermined number. A parts supply device featuring: