JPH0450144B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application In the present invention, a component supply device is used to continuously supply components in an electronic component automatic insertion machine by sequentially using a component supply device. The present invention relates to an automatic position selection device.

Conventional structure and its problems Traditionally, parts were supplied in an automatic electronic component insertion machine by installing multiple cassettes in the supply device and setting electronic components in carriers inside the cassettes and using them one after another, or by taping the electronic components and using them one after another. This is a method in which a plurality of taped parts are set and the electronic parts are sequentially used from each tape. In either case, the maximum number of parts to be inserted is the number of parts provided in one cassette or one tape. In this case, the type of electronic parts is determined by the number of cassettes or tapes that can be installed, and increasing the number of types is possible by increasing the size of the feeding device, and currently, the majority of feeding devices are equipped with a wide variety of products. . Furthermore, this method is an excellent method for mounting a wide variety of electronic components.

However, as electronic components are becoming more integrated and the number of components in electronic circuits is being reduced by using integrated components such as hybrid ICs, this component supply system that uses a multi-product mounting method creates unnecessary component supply sections. A case arises. In addition, in order to make effective use of the component supply section, when the same type of electronic component is mounted on multiple supply sections, it is necessary to select the component supply section and insert the electronic component continuously for a longer period of time than when a single electronic component is mounted. It is necessary to set the component arrangement of the component supply sections in advance, select the supply sections sequentially, and obtain an average number of parts used.

However, in this case, preparations before insertion are time consuming, it is not always possible to select components efficiently, and the timing of switching the supply section for electronic components of the same type loaded in multiple supply sections is difficult. are doing.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional problems and provides an automatic component supply position selection device that improves the operating rate by shortening the preparation time of an automatic electronic component insertion machine and enables long-term operation. aim at something.

Structure of the Invention The automatic component supply position selection device of the present invention includes a component supply device that supplies electronic components, a component detection device that detects the presence or absence of electronic components mounted on the component supply device, and a component holding device that detects the presence or absence of electronic components mounted on the component supply device. A storage device that stores the number of remaining parts between devices, a measuring device that measures the number of times the component holding device has moved through the component supply section, a movement command device that instructs the movement of the component holding device, and a movement command device that commands the movement of the component holding device. It consists of a moving device that moves the component holding device in response to a signal, and when the supply section of the component supply device runs out of components, it automatically moves the component holding device to another supply section that has been set with the same components in advance. Parts supply continues and electronic parts are continuously supplied.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, the component detection devices 1a to 1d are each composed of a pair of photoelectric switches and optical fibers, and the number of component detection devices 1a to 1d is equal to the number of components supplied by the component supply device 5. The component detection devices 1a to 1d are connected to the movement command device 2, and the component detection device 1
Information on the presence or absence of parts obtained in steps a to 1d is sent to the movement command device 2. The movement command device 2 also includes a small electronic computer (hereinafter referred to as CPU), a storage device, and a measuring device. The component holding device 3 is connected to the insertion head 4
The parts are moved up and down by cylinders provided in the parts feeder 5, and parts are grabbed from each of the supply parts 5a to 5d of the parts feeder 5.

For example, if we consider the case where a component is grabbed from the component supply section 5d, the component holding device 3 moves to the component supply section 5d designated by the movement command device 2.

The operation of the component holding device 3 after the movement is completed will be described with reference to FIG. 2. Note that FIG. 2 is a system diagram of the operation of the movement command device 2. As shown in FIG.

Before entering into the explanation of the operation, the parts data, parts data counter, movement frequency, and movement frequency counter in FIG. 2 will be explained.

Parts data is the value stored in the storage device that stores the number of remaining parts, and is the value stored in the parts data counter 9.
becomes the initial value.

When information indicating the presence of a part is input from the parts detection devices 1a to 1d to the movement command device 2, the parts data counter is always preset to this initial value.

Further, when information indicating that there are no parts is input, the parts data counter subtracts from the currently stored value P of the number of remaining parts and stores this value again.

The movement frequency is incremented by a movement frequency counter when the component holding device moves to another component supply section after the components in one component supply section are used up.

The value C of the movement frequency counter is reset to 0 every time information indicating that a part is present is input to the movement command device 2. Also, this value is 1 for the number T of registration in the supply section.
When it reaches the value obtained by adding , that is, the value when the component holding device makes one round of each component supply section and returns to the supply section where counting was started, the count is stopped and component out information is output.

The above is an explanation of parts data, parts data counter, movement frequency, and movement frequency counter.

Next, we will explain the operation.

After the movement of the component holding device 3 is completed, the component detection device 1
The movement command device 2, which has received the information on the presence or absence of parts from d, presets the parts data counter 9 if it is a signal indicating that the parts are present, and also resets the movement frequency counter 10, and then issues a component mounting command 11 to the insertion head. Output to 4. If the signal indicates that there are no parts at this time, the remaining value P subtracted by the parts data counter from the value in the storage device that stores the number of remaining parts will be P>0.
If so, the part data counter 13 subtracts the value of P, and then outputs a component mounting command 11 to the insertion head 4. At this time, if P≦0, the movement frequency counter 14 counts how many times the component holding device 3 has moved between the component supply sections 5a to 5d, and if this count number C is C≦0, the component is held. The device movement command 15 is outputted to the movement device 6, and the movement frequency counter is incremented. The component holding device then moves to another supply section, for example 5a, and after completing the movement, repeats the cycle from component detection. Also, if the count number C is C>0, compare the pre-registered supply number T and C and T+1
>C, the component holding device movement command is output and the above movement is performed, and if T+1≦C, the component holding device makes one cycle through all the supply sections, determines that there are no components in all the supply sections, and stops component mounting. and outputs a parts out signal.

In this way, the device continues to operate until all the parts in the parts supply section are used up.

Before T+1≦C, if parts are sequentially supplied to the parts supply section that is out of parts, this device will continue to operate until the machine is stopped.

The above is an explanation of one embodiment of the present invention. In this embodiment, the number of parts supplied by the component supply device is 4.
However, it goes without saying that the number of supply units can be increased or decreased as desired. In addition, parts were continuously mounted by moving the parts holding device, but
The same effect can be obtained by moving the parts supply device. In addition, component detection may be performed by detecting only the component holding device or the supply section to be transferred, without installing each component in each supply section. Furthermore, the number of parts may be counted at any timing within one cycle from mounting to insertion, either when mounting or inserting the component. The component detection device is not limited to a photoelectric switch, but may also be a micro switch, a laser, a camera, or the like. Furthermore, it goes without saying that the existing NC device may be used without installing a new moving device.

Effects of the Invention As explained in detail above, the present invention, compared to conventional component supply devices, (1) can increase the number of components loaded without modifying component supply devices such as automatic electronic component insertion machines; By continuously replenishing the empty supply section with parts using another device, the electronic parts automatic insertion machine can be operated without stopping.

(2) The number of parts that can be loaded into one parts supply section can be used continuously up to the number of all installed parts supply sections, and unmanned operation at night etc. is possible with existing equipment.

(3) Since the selection pattern of the component supply section can be made randomly, it is possible to insert a wide variety of products, and conventional methods are also effective.

It has this effect.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of an embodiment of the present invention, and FIG.
The figure is a system diagram showing the operation of the movement command device. 1a, 1b, 1c, 1d...photoelectric switch, 2
...Movement command device, 3...Component holding device, 4...
Insertion head, 5...Component supply device, 5a, 5b,
5c, 5d... parts supply section, 6... servo motor driver, 7... DC servo motor.

Claims (1)

[Claims] 1. A component detection device that detects the presence or absence of a component at a component supply position, a storage device that stores the number of components, a measuring device that measures the number of times the component supply device or component holding device moves, and An automatic component supply position selection device comprising a movement command device that commands movement, and a movement device that moves a component supply device or a component holding device based on a signal from the movement command device.