JPH11284395A - Automatic electronic parts mounter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply judge that an storage box for waste tape has become full. SOLUTION: CPU 24 computes and stores the quantity of occurrence of waste data per sheet of a printed board in a storage memory for quantity of occurrence in every board 35, based on the mounting data and the quantity of occurrence of waste tape for every kind of parts in a storage memory 37 for a quantity of occurrence of waste tape. In automatic operation, each time parts are mounted on a sheet of board, a counter 39 counts it, and adds up the quantities of the waste tapes, and when CPU judges that the waste tape storage box is full, a full space notice lamp notifies a user of it, and a device is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape feeding unit for intermittently feeding a component housing tape for housing electronic components and supplying the components to a plurality of supply bases, and a plurality of tape feeding units. The present invention relates to an electronic component automatic mounting device that takes out a component with a takeout nozzle and mounts the component on a printed circuit board.

[0002]

2. Description of the Related Art As this kind of electronic component automatic mounting apparatus, there is known an apparatus described in Japanese Patent Application Laid-Open No. 7-154094. According to this conventional technique, a technique is disclosed in which a tape for storing electronic components is cut after taking out the electronic components, and the waste tape is stored in a storage box. Further, it is disclosed that a limit switch detects that the waste tape stored in the storage box is full.

[0003]

However, in the above-mentioned prior art, a spring and a limit switch must be provided to detect the fullness of the waste tape, and wiring must be connected to the limit switch.

In order to detect fullness without providing such a hardware detection mechanism, it is conceivable to add up the amount of tape waste generated each time the tape is cut. However, it is not practical to perform such a calculation every time the tape is cut, because the load on the CPU, which is the control unit of the apparatus, is large.

Accordingly, an object of the present invention is to make it possible to easily determine that the storage box for waste tape is full.

[0006]

SUMMARY OF THE INVENTION For this reason, the present invention provides a tape feed unit for intermittently feeding a component storage tape for storing electronic components and supplying the components, on a plurality of supply bases, and In an electronic component automatic mounting device that takes out a supplied electronic component with a take-out nozzle and mounts it on a printed circuit board, a cutting unit that cuts off a waste tape from a portion where the electronic component sent out from the unit is taken out, and the cutting unit cuts Storage box for storing the waste tape, and counting means for counting the number of printed circuit boards on which the electronic components have been mounted,
Determining means for determining whether the storage box is full based on the number of printed circuit boards counted by the counting means.

[0007] With this configuration, the number of components is counted each time the component is mounted on the board, so that the fullness of the storage box can be determined, and the fullness can be easily determined without applying a load.

Further, the present invention preferably provides a storage means for storing the generation amount of the waste tape for each substrate, and a full storage means for storing the amount of the waste tape for filling the storage box. Wherein the determination means is configured to calculate the current amount of waste tape stored and the amount of waste stored in the full amount storage means calculated based on the number of substrates counted by the counting means and the generation amount stored in the generation amount storage means for each substrate. The fullness is determined by comparing the fullness of the tape.

As described above, since the amount of waste tape generated for each substrate is stored, it is easy to grasp the storage amount of the storage box after counting the substrates.

Preferably, the present invention provides mounting data storage means for storing mounting data which is determined for each type of printed circuit board and indicates the type of electronic component to be mounted together with the mounting position on the printed circuit board; A waste tape generation amount storage means for storing the generation amount of waste tape for each type of waste tape, based on the mounting data stored in the mounting data storage means and the waste tape generation amount for each part stored in the waste tape generation amount storage means. Calculation means for calculating the generation amount of the waste tape stored in the generation amount storage means for each substrate is provided.

As described above, based on the mounting data and the amount of waste tape generated for each component, the amount of waste tape generated for each board can be calculated in advance.

Preferably, the present invention further comprises stop control means for stopping the mounting operation of the electronic component when the judgment means judges that the storage box is full.

[0013] In this way, it is possible to prevent the waste tape from overflowing when the tape is full and the mounting is continued.

Preferably, the present invention further comprises a notifying means for notifying that the storage box is full when the determination means determines that the storage box is full.

By doing so, the operator can know that the storage box is full, and can take necessary measures.

[0016]

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

In FIG. 2, reference numeral 1 denotes a chip-shaped electronic component 2.
(Hereinafter, referred to as a chip component or component) is a carrier tape that is enclosed and stored at equal intervals, and is wound and stored on a tape reel 3. The tape 1 is cut off by the tape feed unit 4 having a sprocket mechanism (not shown) for the interval in which the parts 2 are stored. A plurality of tape feed units 4 are arranged on the component supply table 5 in a direction orthogonal to the tape 1 feed direction. The supply table 5 is movable in the direction in which the units are arranged. Supply stand 5
A plurality of tape feed units 4 arranged in each of these stores electronic components 2 of different types, and the type of the carrier tape 1 differs depending on the type of the component 2. The carrier tape 1 is, for example, a tape made of paper or a plastic tape, and the tape has a different tape width and a different feed pitch depending on the size of the component.

The chip component 2 is sucked from the carrier tape by a suction nozzle 7 as a take-out nozzle. A plurality of suction nozzles 7 are attached to the periphery of the rotary disk 6 at equal intervals, and the components 2 taken out by the suction nozzles 7 are conveyed to a position where they are mounted on the printed circuit board 9 by intermittent rotation of the rotary disk 6. You.

The printed circuit board 9 is mounted on an XY table 10, and the table 10 is
Then, the printed board 9 is stopped at a predetermined position by moving in the horizontal direction by the rotation of the Y-direction moving motor 12. The chip component 2 sucked by the suction nozzle 7 can be mounted at a position specified by mounting data described later.

The position where the suction nozzle 7 stops to take out the chip component 2 from the unit 4 is always the same,
If the stop position of the nozzle 7 is a suction station,
When the unit 4 for supplying the desired type of component 2 stops at the position for supplying the component 2 to the suction nozzle 7 of the suction station by the movement of the supply table 5, the drive lever (not shown) drives the sprocket (not shown) of the unit 4. The mechanism performs the feeding operation of the carrier tape 1, that is, the supplying operation of the component 2.

When the carrier tape 1 is fed and the electronic component 2 is taken out by the suction nozzle 7, the cutter 14 cuts off the leading portion of the tape 1 after the chip component 2 has been removed in synchronization with the feeding operation. The cutter 14 is provided below the suction station.

Waste tape 1 separated by cutter 14
7 is a waste tape storage box 16 provided below the cutter 14.
It falls inside and is stored.

Next, a control block of the electronic component automatic mounting apparatus will be described with reference to FIG.

Reference numeral 24 denotes a CPU, based on data stored in the RAM 26, and performs overall control of the operation related to component mounting of the electronic component mounting apparatus in accordance with a program stored in the ROM 25. The CPU 24 also has a function as a determination unit for determining whether the storage box 16 is full. The CPU 24 is connected to control objects such as the X-direction moving motor 11, the Y-direction moving motor 12, the turntable drive motor 32, and the supply stand drive motor 31 via an interface 27 and a drive circuit 30. The interface 27 is also connected to the full notification light 16, a counter 29 for counting the number of boards that have been mounted, a CRT 33, and the like. The turntable drive motor 32 not only rotates the turntable 6 but also drives the cutter 14 via a cam drive mechanism (not shown). The driving of the cutter 14 may be provided separately. Further, the interface 27 has a warning light 40 for notifying that the waste tape storage box 16 is almost full.
Is connected.

Further, the RAM 26 stores the generated amount storage memory 35 for each substrate (the generated amount storage means for each substrate) for storing the generated amount of the scrap tape 17 for each printed circuit board 9, and the storage box 16 is full. Full amount storage memory 36 (full amount storage means) for storing the amount of waste tape 17, and waste tape generation amount storage memory 37 (waste tape generation amount storage means) for storing the amount of waste tape 17 generated for each type of electronic component And waste tape 17
Is provided with a notice amount storage memory 38 for storing a storage amount for notifying that is almost full.

Further, the RAM 26 is provided with a mounting data storage memory 39 (mounting data storage means) for storing the mounting data shown in FIG. The mounting data is composed of the component type and mounting position data indicated by X, Y coordinates and θ angles for each mounting order. Various mounting data are stored in the RAM 26 in accordance with the type of the printed circuit board. The mounting data storage memory 39 stores the mounting data of the printed circuit board 9 to be produced. The waste tape generation amount storage memory 38 stores data indicating the waste tape generation amount for each component type as shown in FIG. 4, and the generation amount of the waste tape 17 is the minimum generation amount of 8 mm.
The amount generated by cutting the paper tape with the smallest feed amount once with the carrier tape 1 having a width is defined as 1 as a basic unit, and in the case of the other parts 2, it is represented by a multiple thereof. The unit is expressed as the number of times, for example, a component type “C” which is a large component 2.
In the case of, the amount for four times is generated every time the tape waste is cut.

The operation will be described below.

First, the setting of the waste tape full notice will be described.

By operating an operation unit (not shown), a screen for setting a notice of full waste tape as shown in FIG. 5 on the CRT 33 is displayed.
Times "and" 15000 times ". With this setting, “12345 times” is stored in the notice amount storage memory 38, and “15000 times” is stored in the full amount storage memory 36.

Next, the waste tape storage box 16 is emptied, and FIG.
When the button for totalizing value initialization is pressed on the screen as shown in FIG. 7, a touch panel switch is formed on the CRT 33 screen, and the total value column is reset to “0”.

Next, when the type of the printed circuit board 9 to be produced is input on a screen (not shown), the corresponding mounting data shown in FIG.
Is stored in

Next, the CPU 24, as a calculating means, accumulates the number of waste tape generation amounts corresponding to the component types shown in FIG. To be stored.

Under such settings, the automatic operation of the electronic component automatic mounting apparatus is performed according to the mounting data shown in FIG.

That is, when the component of the component type A in the mounting order 1 is sucked by the suction nozzle 7, the cutter 14 cuts the leading portion of the carrier tape 1 from which the component 2 is taken out, and the dust tape 17 It is dropped and stored in the tape storage box 16. The amount of the waste tape 17 of this part 1 is one time of the minimum unit.

Next, the suction nozzle 7 is attached to the part 2
Is transported at intermittent rotations, and is mounted at the position specified by the mounting data on the XY table 10.

During the rotation of the turntable 6, the next suction nozzle 7 takes out the component 2 of the component type B from the tape sending unit 4, and the leading end of the carrier tape 1 is cut and the storage box 1 is removed.
6 is stored. The amount of the waste tape 17 is twice as large as that of the component A which is the minimum unit.

Thereafter, the electronic component 2 is mounted according to the mounting data, and the waste tape 17 is stored in the storage box 16.

The last component 2 in the mounting data is the substrate 9
In this case, since the component mounting on one board 9 has been completed, the counter 29 is counted up and the number "1" is stored. At this time, the waste tape generation amount storage memory 37 stores the number of times indicating the amount counted by the counter 29 in the amount stored in the substrate-based generation amount storage memory 35.

In this way, each time one substrate 9 is completed, the counter 29 counts the number of substrates and stores the count value in the waste tape generation amount storage memory 37 in the generation amount storage memory 35 for each substrate. The amount (the number of times) multiplied by the amount of the used waste tape 17 is stored.

In this manner, when the number of times stored in the waste tape generation amount storage memory 37 reaches the number of times stored in the notice amount storage memory 38 (if it becomes the same or exceeds), the CP
U24 turns on the warning light 40 to notify the worker that the battery is almost full. At this time, the screen of the CRT 33 is shown in FIG.
As shown in the figure, the total value is displayed in the same manner as the number of notices, and the bar graph at the bottom of this screen also shows the number of notices of 10%.
0% has been reached. It can be seen that the bar graph of the number of stops has not yet reached 100%.

When the automatic operation is continued while this state is left, the total value, that is, the number of times of the waste tape generation amount storage memory 37 is increased (of course, the waste tape 17 stored in the actual storage box 16). The amount has also increased.)
If "000 times" is exceeded, the CPU 24 as the judging means judges that the storage box 16 is full, and stops the component mounting operation as the stop control means. That is, in order to stop the suction of the component 2 and the mounting operation on the printed circuit board 9, the turntable driving motor 32, the supply board driving motor 31 and the X-direction moving motor 11 and the Y-direction moving motor 12 are stopped.

At the same time, the CPU 24 sets the full notification light 2
8 is turned on to notify the worker that the battery is full. The operator can know that the apparatus is full and the apparatus is stopped. In addition, the total value is equal to or greater than the number of stops on the screen of the CRT 33, and the bar graph of the number of stops also indicates 100%.

The operator discards and emptyes the waste tape 17 in the storage box 16 that is full, presses the button for initializing the total value on the CRT 33 screen, and resets the counter 29 to 0.

Thereafter, the automatic operation is restarted.

[0045]

As described above, according to the present invention, the fullness can be determined by counting each time the electronic component is mounted on the board, so that it is possible to easily determine whether the storage box is full and to impose a load on the control operation. If the storage box becomes full without any action, a measure can be taken.

[Brief description of the drawings]

FIG. 1 is a control block diagram of an electronic component automatic mounting apparatus.

FIG. 2 is a perspective view of the electronic component automatic mounting apparatus.

FIG. 3 is a diagram showing mounting data.

FIG. 4 is a diagram showing data on the amount of waste tape generated for each component type.

FIG. 5 is a CRT screen view of a waste tape full notice setting.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Carrier tape (component storage tape) 2 Chip-shaped electronic components 4 Tape feed unit 7 Suction nozzle (extraction nozzle) 9 Printed circuit board 14 Cutter (cutting means) 16 Scrap tape storage box 17 Scrap tape 24 CPU (judgment means) (calculation means) (Stop control means) 26 RAM 28 Full notification lamp (notification means) 29 Counter (counting means) 35 Generated amount storage memory for each substrate (generated amount storage means for each substrate) 36 Full storage memory (full storage means) 37 Waste Tape generation amount storage memory (waste tape generation amount storage means) 39 Mounting data storage memory (mounting data storage means)

Claims (5)

[Claims] 1. A plurality of tape feeding units for intermittently feeding a component storage tape for storing electronic components and supplying the components are arranged on a plurality of supply tables, and the electronic components supplied to the units are taken out by a take-out nozzle. In an electronic component automatic mounting device to be mounted on a printed circuit board, a cutting unit that cuts off the waste tape of a portion from which the electronic component sent out from the unit has been taken out, and a storage box that stores the waste tape cut by the cutting unit, An electronic device comprising: counting means for counting the number of printed circuit boards on which electronic components have been mounted; and determining means for determining whether the storage box is full based on the number of printed circuit boards counted by the counting means. Parts automatic mounting equipment. 2. The apparatus according to claim 1, further comprising: an amount-of-substrate storage unit that stores an amount of the waste tape generated for each substrate; and a full-amount storage unit that stores the amount of waste tape that fills the storage box. The judging means calculates the current storage amount of the waste tape calculated based on the number of substrates counted by the counting means and the generation amount stored in the generation amount storage means for each substrate and the full amount of the waste tape stored in the full amount storage means. 2. The automatic electronic component mounting apparatus according to claim 1, wherein the fullness is determined by comparing the numbers. 3. A mounting data storage means for storing mounting data which is determined for each type of printed circuit board and indicates the type of electronic component to be mounted together with a mounting position on the printed circuit board; A waste tape generation amount storage means for storing the generation amount of tape; and the substrate generation amount based on the mounting data stored in the mounting data storage means and the waste tape generation amount for each component stored in the waste tape generation amount storage means. 3. The automatic electronic component mounting apparatus according to claim 2, further comprising a calculating unit configured to calculate a generation amount of the waste tape stored in the storage unit. 4. The electronic component automatic mounting according to claim 1, further comprising a stop control unit configured to stop the mounting operation of the electronic component when the determination unit determines that the storage box is full. apparatus. 5. The electronic component automatic device according to claim 1, further comprising a notifying unit for notifying that the storage box is full when the determination unit determines that the storage box is full. Mounting device.