JPH0639016B2 - Parts centering device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component centering device used in coaxial electronic component taping, which is a pre-step for automatically inserting coaxial electronic components.

FIG. 2 is a perspective view showing an example of a taping machine. In the figure, the electronic components carried by the chain conveyor 4 from the coaxial electronic component supply unit 2 are subjected to center positioning regulation in the centering unit 1 and are taped, and the tape is wound up by the winding unit 3.

The present invention relates to a centering device used in the centering part of such a taping machine.

[Background of the Invention]

There are roughly two types of conventional variable centering devices for coaxial electronic component taping, and these systems are all variable centering devices that are a combination of mechanisms.

FIG. 3 is a perspective view showing a taping hoisting type mechanical centering device as a conventional example, FIG. 4 is a perspective view showing the same taping hoisting type mechanical centering device, and FIG. 5 is a principle explanation of the conventional centering device. FIG. 5A is a side view of FIG.

In these figures, 4 is a chain conveyor, 5 is a coaxial electronic component, 6 (6R, 6L) is a center positioning plate, 7
(7a, 7b) are springs, 8R and 8L are holddowns, and 9 is a gear.

As shown in FIGS. 3 and 4, the coaxial electronic component 5 transported by the transport chain 4 is regulated in position by the center positioning plate 6 which is narrowed inward by the spring 7 and is taped to the center position of the tape. It Since both methods use spring force for positioning, they have major drawbacks such as being easily affected by the shape of the parts and becoming unstable, resulting in large variations in accuracy.

The conventional variable centering device at the time of taping the coaxial electronic component is a mechanical type as shown in FIGS. 5 and 5A, and the mechanism and problems will be described below.

In these figures, the coaxial type electronic component 5 carried by the carrying chain 4 in the conventional centering unit has the center positioning plates 6R, 6L sandwiched by the balance of the springs 7a, 7b by the body of the component 5. Pass through the centering unit while unfolding.

At this time, holddowns 8R and 8L are attached as push plates so that the component 5 does not escape upward. Each time the component 5 passes, the center positioning plates 6R and 6L are narrowed to the minimum, but are tapped as shown in FIG. 6 while being expanded again by the next component body.

Incidentally, FIG. 6 is an explanatory view showing a taping situation, in which 10 is a sequence tape.

The problem with this device is that the center positioning plates 6R, 6L
Pushes the component 5 to the center position by the spring force, and because the component body pushes the force acting inward to pass through the unit, it slips easily depending on the shape of the component 5 and the center position is poorly positioned. Further, since it is a spring type, the response time may be deteriorated and the accuracy may vary greatly.

In addition, there are several hundred known machines in Japan, such as the sequencer (coaxial electronic component taping machine) manufactured by Universal, USA and the sequencer manufactured by USM, Inc. of the United States, and the centering accuracy is inserted by any manufacturer. Since it is the first factor that hinders the unmanned operation of the machine, it is the current situation that we are trying to improve this device.

[Object of the Invention]

An object of the present invention is to improve the accuracy, which was difficult to be realized by the conventional mechanical variable centering device, by an electrically controlled variable centering device based on component size image processing feedback, and to improve the coaxial electronic component automatic insertion machine in the next step. M
It is intended to improve TBF (Mean Time Between Failwo) and achieve highly efficient operation and unmanned operation.

[Outline of Invention]

The present invention is intended to achieve high speed and stability by making the conventional mechanical system electrically controlled in order to further improve the centering accuracy of the sequence tape in the sequence process of coaxial electronic parts which is becoming smaller and more diversified. .

Example of Invention

An embodiment of the present invention will be described below with reference to FIGS. 1 and 1A. FIG. 1 is a plan view showing an embodiment of the present invention, and FIG. 1A is a side view of an essential part in FIG.

In these figures, the coaxial electronic component 5 transported by the chain conveyor 4 has its component size measured by an image sensor 11, data is processed by an image processing device and a microcomputer 12, and a pulse motor drive amplifier 13 to a pulse motor 14 are processed. To drive.

When the pulse motor 14 and the pulley 15 rotate simultaneously, the steel belts 16 and 17 attached to the pulley 15 expand and contract, the center positioning plate 6 moves in parallel, and the center is regulated by the component size.

In the figure, 18 is a slide shaft and 19 is a linear bush.

By repeating and executing this operation, it is possible to perform the automatic position control taping according to the component size and greatly improve the centering accuracy of the tape.

Further, compared with the mechanical type, maintenance such as a spring constant is not required at all, and maintenance can be facilitated.

〔The invention's effect〕

As described above, according to the present invention, it is possible to perform taping centering at high speed and with high accuracy, and
No need for adjustment know-how. As a result, the MTBF of the coaxial component insertion machine can be doubled and the operating rate can be improved by 10%.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, FIG. 1A is a side view of an essential part in FIG. 1, FIG. 2 is a perspective view showing an example of a taping machine, and FIG. 3 is a conventional centering device. FIG. 4 is a perspective view showing an example, FIG. 4 is a perspective view showing another conventional example,
FIG. 5 is a plan view for explaining the principle of a conventional centering device, FIG. 5A is a side view of the same, and FIG. 6 is an explanatory view showing a taping situation. Explanation of symbols 1 …… Centering part 2 …… Coaxial type electronic parts supply part 3 …… Tape winding part 4 …… Chain conveyor 5 …… Coaxial type electronic parts 6 (6R, 6L) …… Center positioning plate 7 (7a) , 7b) …… Spring 8R, 8L …… Hold down 9 …… Gear, 10 …… Sequence tape 11 …… Image sensor 12 …… Image processing device and microcomputer 13 …… Pulse motor drive amplifier 14 …… Pulse motor, 15 …… Pulley 16,17 …… Steel belt 18 …… Slide shaft 19 …… Linear bush

Claims (1)

[Claims] 1. An electronic component conveying means and two plate members movable in a direction orthogonal to the conveying direction, wherein the electronic component is conveyed by the conveying means.
An image sensor for measuring the size of an electronic component and a signal from the image sensor in a component centering device in which the center positioning of the electronic component is regulated by sandwiching the plate member from a direction perpendicular to the conveying direction. Image processing circuit for processing, a steel belt attached to a pulley directly connected to a motor, and the steel belt allows the two plate materials to be varied and centered according to the size of the electronic component. Centering device.