JPH02216900A - Automatic supplying device for chiplike electric component - Google Patents

Abstract

PURPOSE:To enhance the efficiency of moving a positioning base placing component supply means by providing detecting means for judging whether the base is located at a machine origin position or not, means for judging whether a temporary origin provided for each group is disposed at a desired position or not, means for storing component supply means corresponding to each mounting step, and control means for a drive source. CONSTITUTION:A machine origin detecting sensor 4 judges whether a positioning base 2 is disposed at a machine origin position or not according to whether a light emitted from the sensor is transmitted or shielded. A disposing position detecting sensor 5 counts the number of transmissions of a light from the sensor 5 at a slit 20 of a slit plate 19 coaxially attached to a drive motor 3 to obtain the moving distance of the base. A floating origin detecting sensor 6 judges whether the base is disposed at a temporary origin position according to whether a light from the sensor is transmitted or shielded by a projection 7 attached to a tape cassette 1 disposed at the predetermined temporary origin position. These controls are conducted by a controller 15, and a chuck 13 mounts a removed component 9 on a board 12.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Industrial Application Field The present invention provides a component supply means in which a large number of chip-shaped electrical components are housed, and a positioning table on which the component supply means are placed in groups. The present invention relates to an automatic supply device for chip-shaped electrical components, which comprises a drive source for moving the positioning table to a predetermined position, and a mounting means for mounting the electrical component to a predetermined position on a printed circuit board.

(B) Prior Art Conventionally, in an automatic mounting device for chip-shaped electrical components that automatically mounts chip-shaped electrical components onto a printed circuit board, each tape cassette interval (
The positional shift of the positioning base was detected using slits provided at equal intervals at each tape cassette position each time the tape cassette was moved (one pitch), but if the positioning base shifted by an amount that was an integral multiple of the pitch, the shift could not be detected. Since this is possible, such positional deviations were either ignored or corrected by returning to the mechanical origin each time the electrical components were supplied to each printed circuit board, but the distance to return to the mechanical origin was too long. When it was extremely large, the work cycle became long, which had the disadvantage of causing losses.

(c) Problems to be Solved by the Invention Therefore, when mounting a chip-shaped electrical component on a printed circuit board, it is possible to efficiently move a positioning table on which a component supply means such as a tape cassette containing the chip-shaped electrical component is mounted. It is an object of the present invention to provide a novel automatic feeding device for chip-shaped electrical components that can be easily fed.

(d) Means for Solving the Problem A chip-shaped device comprising a positioning table on which the positioning table is placed, a drive source for moving the positioning table to a predetermined position, and a mounting means for mounting the electrical component at a predetermined position on a printed circuit board. In the automatic supply device for electrical parts, the machine origin detection means determines whether or not the positioning table is at the machine origin position, and the positioning table also detects a desired temporary origin of the temporary origin position provided for each group. a floating origin detecting means for determining whether the floating origin is in the position; a storage means for storing the provisional origin position and a component supplying means corresponding to each mounting step; and one print based on the memory contents of the storage means. A control means is provided for controlling the drive source so as to return the positioning table to a desired temporary origin position upon completion of the mounting operation on the board.

(*) Effect From the above, when the mounting operation on one printed circuit board based on the mounting step stored in the storage means is completed, the control means drives the group to the origin position of the handled group, which is also stored in the storage means. The positioning table is moved by controlling the source. At this time, if the origin position is a mechanical origin position, it is detected by a mechanical origin detection means, and if it is a temporary origin position, it is detected by a floating origin detection means.

(f) Embodiment FIG. 1 is a perspective view of an automatic supply device for chip-shaped electrical components of the present invention, FIG. 2 is a block diagram for explaining the same device, and FIG. It is a state diagram of a set address.

(1) is a tape cassette as a component supply means, which is placed in large numbers on a positioning table (2) movable by a drive motor (3) driven by a motor drive unit (18). A large number of chip-shaped electrical components (9) are stored.

(4) is a mechanical origin detection sensor consisting of a transmission type photosensor that detects whether or not the positioning base (2) is at a reference origin position that is a reference for movement of the positioning base (2);
The positioning base (2) depends on whether the light emitted from the sensor (4) passes through or is blocked by the positioning base (2).
Determine whether or not is at the machine home position.

(5) is a placement position detection sensor consisting of a transmission type photosensor that detects the amount of movement of the positioning table (2), and the light emitted from the sensor (5) is sent coaxially to the drive motor (3). The slit of the attached slit plate (
20), the amount of movement of the positioning table (2) can be determined by counting the number of times the positioning table (2) has passed by using a counter (not shown).

(6) is attached to the base (8), and the positioning base (
2) A floating origin detection sensor consisting of a transmission type photosensor that detects whether or not the positioning base (2) is at the temporary origin position of movement, and whether the light emitted from the sensor (6) is transmitted. , it is determined whether or not the positioning table (2) is at the temporary origin position based on whether it is shielded by the protrusion (7) attached to the tape cassette (1) placed at a position previously determined as the temporary origin position.

(13) is the component extraction window (1) of the tape cassette (1).
1) Chip-shaped electrical component (9) inside the tape (10)
) is used to take out the chip-shaped electric component (9) and is mounted on the printed circuit board (!2).

(long) is the CPU including registers (22) and (23)
The keyboard (14), switch group (21
) is not connected.

The switch group (21) includes a power switch (24), a start switch (25), and a stop switch (26).
has.

(16) is a data memory, and (17) is an address counter.

The operation will be explained below.

First, in order to drive the mechanism shown in FIG. 1, data is input in advance using the keyboard (14) in FIG. 2, and the address counter (17) is stored in the data memory (16).
Specify the address through.

- For example, if R1 to R6 are selected from a plurality of tape cassettes and a protrusion (7) is provided on R3, after completing a series of electrical component mounting operations on one printed circuit board (12), the protrusion The sensor (6) detects the child (7), treats it as the origin, and restarts the series of electrical component mounting operations on the next printed circuit board. Here, the register (22) is set with a flag indicating that the operation is in progress, a flag indicating the origin check, a flag indicating the end of the cycle, and a flag indicating the abnormality.
Furthermore, data indicating the current position of the tape cassette is stored in the register (23).

Accordingly, the contents of the data memory bar 16) include tape cassette position data and -
It consists of a data area indicating the end of a cycle, etc., and the data of the floating origin position (R3) is set in the data area designated by zero in the address counter (17). That is, the third
The example in the figure shows the number of parts on one printed circuit board as 7 (1
7), and the floating origin (hereinafter referred to as virtual quadrant) is the third positioning position.

First, when the power switch (24) in the switch group (8!) is closed, the mechanical origin detection sensor (4) determines whether or not it is at the machine origin, and the positioning base (2) is always set at the machine origin. If not, the drive motor (3) will not start operating, and furthermore, a positional shift of the tape cassette (1) that is an integral multiple of the positioning position is detected in advance to prevent such shift.

Next, when the start switch (25) of the switch group (21) is pressed, the machine origin detection sensor (4) detects whether the positioning base (2) is at the machine origin or the floating origin detection sensor ( If the positioning table (?) is located at the temporary origin position according to step 6), it is determined that there is no positional deviation, and the work is performed sequentially from R4 according to the data in Fig. 3. That is, the positioning table is moved by the drive motor (3). (2) and move the R4 tape cassette (1) to the chuck (13).
Move the chip-shaped electrical component (9) from the tape cassette (1) to the component extraction position using the chuck (13).
Then, the control unit (long) sets an end mark 'E' to the data indicated by the current address counter (17).
If there is an end mark "E", the address counter (17) is cleared, and the tape cassette (1) of R3 at address 0 (temporary origin) is removed by the chuck (13). Return the positioning base (2) to the take-out position), and place the next printed circuit board (12) in the same way.
). Here, since the final step (address 7) is the tape cassette (1) of R2, it is supplied to the tape cassette (1) of R3, which is the temporary origin. The return movement of the positioning table (2) only requires one pitch. By setting the temporary origin position in the vicinity of the tape cassette (1) at the final step, the return time can be shortened. Also, the end mark “E”
”, the address counter (17) is incremented by 1 and the process proceeds to the next step.

On the other hand, if the positioning base (2) is deviated from the temporary origin position by the floating origin detection sensor (6) during the work, it is determined that the position has shifted, and the operator is alerted to the abnormality and corrected by the operator. The installation will be abnormally stopped until the end. and,
It is corrected by the operator and returned to the origin.

In addition, the stop switch (26) in the figure sends a stop signal to the control unit (15) when it is desired to stop the work, and temporarily stops the supply of the chip-shaped electric component (9).

The tape cassette (1) placed on the positioning table (2) in the above-mentioned automatic supply device for chip-shaped electric components (9).
Although six pieces are shown as an example in FIG. 1, there are several types to several dozen types of the chip-shaped electric parts (9) that are attached to the printed circuit board (12) used in electronic equipment, and the book is divided according to these types. For example, the inventor divides a large number of tape cassettes (1), such as 70 pieces, or a separate parts magazine into groups according to the model of each printed circuit board (12), and temporarily stores each of the groups. Having established a starting point, we were able to fully achieve our intended purpose.

In addition, tape cassettes in the same arrangement (
1) By placing several groups of tapes and providing a temporary origin for each group, if there is any empty tape cassette (1) in the group currently being handled,
The chip-shaped electrical components (9) are taken out from the next group, and after the mounting work on one printed circuit board (12) is completed, the positioning table (2) is returned to the temporary origin position set for that group. It's okay.

Furthermore, the tape cassette (1) is provided with a protrusion (7) for a virtual quadrant.
) has been described, but the protrusion 7) can be installed using the mounting lever (not shown) of the tape cassette (1).
A cap may be inserted into the tip of the lever, and the floating origin may be detected by a sensor (6) for detecting the floating origin.

Furthermore, it goes without saying that various sensors such as magnetic sensors may be used as the sensors (4), (5), and (6).

Note that the outputs of the sensors (4), (5), and (6) may be input to the control unit (long) and processed, but the output of the sensor (4) for detecting the machine origin and the output of the sensor (4) for detecting the placement position A logical product (AND) of the outputs of the sensor (5) is obtained and inputted to the control unit (15) as a detection output of the machine origin position, and the output of the arrangement position detection sensor (5) and the floating origin detection sensor (6 ) is obtained and inputted to the control unit (long) as a temporary origin position detection output, each origin position detection can be performed by two people to the control unit (main) as expected. You will have the advantage of being able to achieve your goals.

(G) Effects of the Invention In view of the above, according to the present invention, after the mounting work on one printed circuit board is completed, the return movement is made to the origin position within each group, so that efficient return movement is possible. The recovery time can be shortened.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the automatic chip supply device of the present invention, FIG. 2 is a block diagram of the same device, and FIG. 3 is a diagram of addresses set on the data memory of FIG. A state diagram is shown. Explanation of main drawing numbers (1)...Tape cassette, (2)...Positioning table, (4)...Mechanical origin detection sensor, (5)...
-Sensor for detecting placement position, (6)...sensor for detecting floating origin, (7)...protrusion.

Claims (1)

[Claims] (1) A component supply means storing a large number of chip-shaped electrical components, a positioning table on which the component supply means are placed in groups, a drive source for moving the positioning table to a predetermined position, and a drive source for moving the positioning table to a predetermined position; In an automatic supply device for chip-shaped electrical components, which comprises a mounting means for mounting a component at a predetermined position on a printed circuit board, a mechanical origin detection means for determining whether or not the positioning base is at the machine origin position; floating origin detection means for determining whether or not the temporary origin position is at a desired temporary origin position of the temporary origin positions provided for each group; and a component supplying means for storing the temporary origin position and corresponding to each mounting step. and a control means for controlling the drive source so as to return the positioning table to a desired temporary origin position upon completion of the mounting operation on one printed circuit board based on the memory contents of the storage means. Automatic feeding device for chip-shaped electrical parts.