JPH09293994A - Electronic parts conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically dissolve a fail by a method wherein a success or a fail of a rotary conveying plate is detected from a supply port of a part supplier, and when a supply fail is detected, a fine vibration for dissolving a fail is given to the rotary conveying plate. SOLUTION: While a rotary conveying plate 3 is intermittently rotated, whenever a recess part 3a may be stopped at a specific supply position, it is detected by a sensor 6 whether or not a part P is supplied to the recess part 3a. When a supply fail is produced, basical operations of intermittent rotation are temporarily stopped, and a drive signal for rotating the rotary conveying plate 3 frontwardly and backwardly in the range of fine angle is supplied to a motor 5. Thereby, the rotary conveying plate 3 under a stop condition is rotated frontwardly and backwardly in the range of fine angle and the part P is correctly inserted into the recess part 3a. Accordingly, there is nothing troublesome that, whenever a supply fail may occur, the device is stopped and parts plugging is dissolved manually, and it is possible to carry out an expected part conveyance at a high working ratio.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component carrying device for feeding and holding a chip-shaped electronic component on a rotary transport plate and transporting it by the rotary transport plate.

[0002]

2. Description of the Related Art Conventionally, when carrying out various inspections such as an electric characteristic inspection and a visual inspection on a chip-shaped electronic component, the following rotary carrier plate is generally used.

This rotary conveying plate has a plurality of concave portions capable of sucking and holding a component to be conveyed in a predetermined direction at equal circumferential intervals, and is intermittently rotated in a vertical state or a horizontal state by a stepping motor. To do. At the stop timing, the component to be conveyed is supplied in a predetermined direction from the component feeder such as a ball feeder or a linear feeder to the concave portion of the rotary conveyance plate stopped at a predetermined supply position and suction-held. Further, the components suction-held in the recesses of the rotary transport plate are transported by the rotary transport plate that rotates intermittently in a predetermined circular locus with the supply position as the base point.

[0004]

In order to carry the parts by the above rotary carrying plate, it is necessary to smoothly carry out the parts feeding from the supply port of the parts feeder to the concave portion of the rotary carrying plate. However, due to external vibration, shock, design accuracy, etc., the positional relationship between the supply port of the component supply machine and the recess of the rotary transport plate stopped at the supply position may be misaligned, or the supply port of the component supply machine may If the parts that move to the recesses of the rotary transport plate are tilted, the parts will be clogged at the supply port, causing a defect in the parts supply to the recesses of the rotary transport plate, and the problem that the desired parts cannot be transported. is there. By the way,
In the conventional apparatus, it is troublesome to stop the apparatus every time the supply failure occurs, manually clear the clogging of parts, and restart the apparatus.

The present invention has been made in view of the above problems, and an object of the present invention is to make it possible to automatically eliminate a defect in the component supply from the component supply device to the rotary transport plate. An object is to provide a component transfer device.

[0006]

In order to achieve the above object, the present invention supplies a chip-shaped electronic component from a supply port of a component feeder to a holding portion of a rotary transport plate to hold it, and the rotary transport plate. In the electronic parts carrier that carries by
Detection means for detecting the quality of the component supply from the supply port of the component supply device to the holding part of the rotary transport plate, and when the detection means detects a supply failure, a small vibration is applied to the rotary transport plate to eliminate the defect. The main feature is that it is provided with a vibration imparting means.

In this electronic component conveying apparatus, when the detecting means detects a defective supply, the vibration imparting means imparts a slight vibration to the rotary conveying plate to eliminate the defectiveness, so that the defective component supply is automatically eliminated. It

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS. 1 is a top view of the transfer device, FIG. 2 (a) is a side view of the rotary transfer plate, and FIG.
FIG. 1 is a front view of a rotary transport plate, in which 1 is a ball feeder, 2 is a linear feeder, 3 is a rotary transport plate, 4 is an air joint, 5 is a stepping motor, and 6 is a sensor for detecting the quality of component supply. is there.

Both the ball feeder 1 and the linear feeder 2 are well-known, and the inside of the ball feeder 1 is a chip-shaped electronic component P (hereinafter simply referred to as a component P, which will be referred to as a component P) to be conveyed, such as a prism or a column. Is an example of a prismatic part). The parts P accommodated in the ball feeder 1 are continuously fed to the linear feeder 2 in a predetermined direction, and linearly transferred by the linear feeder 2 while being aligned in a line. Further, one end of the component transfer path of the linear feeder 2 is used as a component supply port 2 a to the rotary transport plate 3.

The rotary conveying plate 3 has a plurality of (12 in the drawing) recesses 3a capable of sucking and holding the component P in a predetermined direction at equal angular intervals on its peripheral surface, and air suction is applied to the bottom surface of each recess 3a. It has a hole 3b. In addition, an annular air passage 3c having an open rear surface and an air passage 3d extending from the air passage 3c to each air suction hole 3b are radially formed inside the rotary transport plate 3. Further, a rotary shaft 3e connected to the motor shaft of the stepping motor 5 is projectingly provided at the center of the back surface of the rotary transport plate 3. By the way, the component supply port 2a of the linear feeder 2 faces the front side of the recessed portion 3a of the rotary conveyance plate 3 stopped at a predetermined supply position with a slight gap, and the recessed portion 3a has the component supply port 2a. The component P is supplied from 2a in a predetermined direction.

The air joint 4 has a central hole (not shown) into which the rotary shaft 3e of the rotary conveying plate 3 is rotatably fitted, and the front side is opened in the same shape as the annular air passage 3c. It has an annular air passage (not shown) inside. The air joint 4 is arranged on the back surface side of the rotary transport plate 3 via a seal material so that the openings of the annular air passages face each other, and the rotary transport plate 3 is in an airtight state with the air joint 4. It enables intermittent rotation while maintaining. The air joint 4 has a suction port 4a to which a tube from a vacuum source (not shown) such as a vacuum pump is connected. A suction force for sucking components is generated in each air suction hole 3b through the passage 3c and the radial air passage 3d.

The stepping motor 5 has its motor shaft (not shown) connected to the rotary shaft 3e of the rotary transport plate 3, and intermittently rotates the rotary transport plate 3 at every predetermined angle (every 30 degrees in the drawing). .

The sensor 6 is composed of a proximity switch, a photoelectric switch, etc., and is a recess 3a of the rotary transport plate 3 stopped at the supply position.
On the back surface side (opposite side of the component supply port 2a) with a slight gap therebetween. The sensor 6 detects whether or not the component P exists in the concave portion 3a of the rotary transport plate 3 stopped at the supply position.

FIG. 3 is a block diagram of a motor control system. In the figure, 11 is a control circuit, 12 is a drive circuit, and 5 and 6 are the motors and sensors described above.

The control circuit 11 is provided with a memory, a CPU, etc., and has a basic operation program for intermittently rotating the rotary conveyance plate 3 at a predetermined angle and a defect elimination operation program for automatically eliminating supply defects (FIG. 4). Stored in memory).

The drive circuit 12 is provided with a drive IC, a transistor, etc. according to the motor standard, and based on a basic operation signal from the control circuit 11, a drive signal for intermittently rotating the rotary conveyance plate 3 at a predetermined angle is supplied to the motor. 5 and the drive signal for rotating the rotary carrier plate 3 forward and backward in the minute angle range based on the defect elimination operation signal from the control circuit 11. Further, when the motor is operating, an overload on the motor 5 is detected, and when the overload is detected, a motor stop signal is sent to the control circuit 11.

In the above-described transfer device, the rotary transfer plate 3 is intermittently rotated by the motor 5 at every predetermined angle (every 30 degrees in the drawing), so that the concave portion 3 stopped at the predetermined supply position.
The component P can be sequentially supplied to the a from the component supply port 2a of the linear feeder 2 in a predetermined direction (longitudinal direction in the drawing) and can be suction-held, and the component P suction-held in the recess 3a of the rotary transport plate 3 can be held. By the rotary transport plate 3, it is possible to transport on a predetermined circular locus with the supply position as a base point. Further, when some resistance is applied to the rotation operation of the rotary transport plate 3 and the motor 5 is overloaded, the motor 5 can be forcibly stopped to stop the intermittent rotation of the rotary transport plate 3.

Various inspections such as electric characteristic inspections and visual inspections on the parts are carried out when the part P in the middle of conveyance is stopped at a predetermined inspection position due to intermittent rotation of the rotary conveyance plate 3. As a result of the inspection, the part P determined to be non-defective is
When stopped at a predetermined take-out position different from the inspection position,
It is pushed out from the recessed portion 3a of the rotary transport plate 3 by a solenoid-driven or cylinder-driven ejection pusher and dropped and stored in a non-defective container. On the other hand, a component judged as defective is stopped at a predetermined ejection position different from the inspection position. At this time, it is pushed out from the concave portion 3a of the component carrying plate 3 by a solenoid-driven or cylinder-driven ejection pusher and dropped and stored in a defective product container.

Here, from the component supply port 2a to the rotary conveyance plate 3
The defect elimination operation performed when a defect occurs in the component supply to the concave portion 3a will be described with reference to the flowchart of FIG.

During the intermittent rotation of the rotary carrier plate 3,
Each time the concave portion 3a stops at a predetermined supply position, the concave portion 3a
Whether or not the component P is supplied to the sheet is detected by the sensor 6, and more specifically, whether or not the presence of the component P is detected by the sensor 6 within a predetermined time from the time when the intermittent rotation rotary transport plate 3 is stopped. Is determined (step S in FIG. 4)
T1, 2).

As shown in FIG. 5 (a), the positional relationship between the component supply port 2a and the recess 3a stopped at the supply position may be displaced, or as shown in FIG. 5 (b), the component supply port 2a may be recessed into the recess 3a. When the component P that shifts to No. 3 is tilted or the like is clogged and the component supply to the recessed portion 3a stopped at the supply position becomes defective, it is determined in step ST2 that the component is defective.

When a supply failure occurs, the basic operation of the intermittent rotation is temporarily stopped, and a drive signal for rotating the rotary transport plate 3 in the normal and reverse directions within a minute angle range is sent to the motor 5 (see FIG. 4). Steps ST3, 4). As a result, the rotary conveyance plate 3 in the stopped state rotates forward and backward in a minute angle range, for example, within a range of ± 2 degrees, and in the course of forward and reverse rotation, FIG.
The component P, which was in a component-clogging state as shown in (b), correctly enters the recess 3a.

When the sensor 6 detects that the component P is correctly supplied to the recess 3a which stops at the supply position,
The forward and reverse rotations described above are stopped, and the rotary transfer plate 3 returns to normal intermittent rotation to transfer the desired parts (step ST in FIG. 4).
5).

As described above, according to the above-described electronic component conveying apparatus, when a defect occurs due to component clogging in the component supply to the concave portion 3a of the rotary conveying plate 3 stopped at the supply position, the rotary conveying plate 3 is stopped. Is rotated in the minute angle range in the forward and reverse directions, so that the component P that has been in a component jam state is removed from the recess 3a.
It can be re-supplied correctly and the defect can be automatically eliminated. Therefore, unlike the conventional case, it is possible to carry out a desired component transportation at a high operating rate without the trouble of manually stopping the device and manually clearing the component clogging every time a supply failure occurs.

In the above embodiment, the motor for the rotary transport plate is used to rotate the rotary transport plate in the forward and reverse directions within a minute angle range. However, another power source such as an electric motor can be used. The same slight vibration may be applied to the rotary conveyance plate by using a vibration source. In addition, although the one in which the component is sucked and held in the peripheral surface concave portion is exemplified as the rotary transport plate, the present invention can be applied to a rotary transport plate having a component holding portion having another shape.

[0026]

As described in detail above, according to the present invention,
Even when there is a problem in the component supply from the component feeder to the rotary transport plate, by applying slight vibration to the rotary transport plate, the components that have been jammed can be correctly re-supplied to the rotary transport plate and the component can be supplied. It is possible to automatically eliminate the defect of the product, eliminating the trouble of manually stopping the device and manually clearing the component clogging every time a defective supply occurs as in the past. The transportation can be performed at a high operating rate.

[Brief description of drawings]

FIG. 1 is a top view of a transfer device.

FIG. 2 is a side view and a front view of a rotary transport plate.

FIG. 3 is a block diagram of a motor control system

[FIG. 4] Program flow of defect resolution operation

FIG. 5 is a diagram showing a state where parts are clogged.

[Explanation of symbols]

P ... Parts, 1 ... Ball feeder, 2 ... Linear feeder,
2a ... component supply port, 3 ... rotary transport plate, 3a ... recessed part, 4 ...
Air joint, 5 ... Stepping motor, 6 ... Sensor, 11 ... Control circuit, 12 ... Drive circuit.

Claims (3)

[Claims] 1. An electronic component transporting apparatus for feeding a chip-shaped electronic component from a supply port of a component feeder to a holding portion of a rotary transport plate to hold it, and transporting this by a rotary transport plate, the supply port of the component feeder. A detection means for detecting the quality of the supply of components to the holding part of the rotary transport plate from the above, and a vibration applying means for applying a slight vibration to the rotary transport plate to eliminate the defect when the supply failure is detected by the detection means. An electronic component carrying device, comprising: 2. The electronic component carrying apparatus according to claim 1, wherein a power source of a rotary carrying plate is used as a power source for imparting vibration. 3. The electronic component carrying device according to claim 2, wherein the vibration imparting to the rotary carrying plate is performed by rotating the rotary carrying plate forward and backward in a minute angle range.