JPH04155998A - Part feeder of part mounting device and its usage - Google Patents

Abstract

PURPOSE:To automatically check the mounting position of a parts cassette prior to mounting a part by equipping it with a read write head, which acts as a broker of information conveyance between the information medium (ID counter) of the parts cassette existing in a mounting position and the controller of a part mounting device. CONSTITUTION:To begin with, the mounting position of the parts cassette 1 is input to an ID counter 2. The parts cassette 1 fitted with an ID counter 2, to which the mounting position is input, is attached to the position of the fixing base 3 of a part feeder. A first parts cassette 1 is shifted to the mounting position, and by a write head 4, the mounting position (Zn) of the parts cassette 1 is read in from the ID counter 2. The content is transmitted from the read write head 4 to a controller, and the controller judges whether the mounting position of the parts cassette is right or not. This process is repeated n times (the number of cassettes), and in case that the mounting position of the parts cassette 1 is right (it has become right after modification of mounting), the part mounting is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a component supply device for a component mounting machine that mounts electronic components on a printed circuit board, and a method of using the same.

BACKGROUND OF THE INVENTION In recent years, in the field of component mounting, there has been a demand for shorter set-up time due to high-mix, low-volume production, and with this, even more accurate component quantity control has been required.

Regarding the conventional component mounting method and the method for managing the remaining amount of mounted components, while referring to the flowchart of FIG. 6,
explain.

FIG. 6 is a flowchart showing a conventional component mounting preparation process. In FIG. 6, step 16 is a step of attaching parts to a parts supply device (hereinafter referred to as a parts cassette).

Step 17 is a step of attaching the parts cassette with the parts attached to the parts supply device fixing stand. The components are prepared in steps 16 and 17, and the components are mounted in step 18. After mounting the components, it is checked in step 19 whether the mounting position of the components is correct. As a result, if the component mounting position is incorrect, the parts cassette is reinstalled in step 20, and the component is mounted again in step 18 to confirm that the mounting position is correct. The above steps are the conventional component mounting preparation steps.

Next, a conventional mounting component remaining amount management method will be explained. In FIG. 6, step 21 is a step in which the number of parts attached to the parts cassera F is manually entered into the controller of the component mounting apparatus. Step 22 is a step in which the number of parts used is subtracted from the number of parts input in step 21 during component mounting. Step 23 is a step of displaying which parts and how many are left as a result of performing step 22.

Problems to be Solved by the Invention However, in the above component mounting preparation process, unless the components are mounted on at least one printed circuit board, it is difficult to determine whether the parts cassette attached to the component supply device fixing base is in the correct position. I can't confirm. Furthermore, there was a problem in that the process 19 of checking whether the mounting position of the components is correct lacks reliability because it is judged by humans.

In the mounting parts remaining amount management method, the step 22 of subtracting the number of used parts from the number of parts input in step 21 is an internal process of the component mounting apparatus, so when the parts cassette is replaced with another one, , the actual number of parts and the information on the remaining number of parts held inside the automatic mounting machine do not match. Furthermore, if the number of parts installed in the parts cassette is unknown, there is a problem that specific operations cannot be carried out.

SUMMARY OF THE INVENTION An object of the present invention is to provide a component supply device for a component mounting machine that solves the above-mentioned conventional problems, and a method of using the same.

Means for Solving the Problems In order to achieve the above object, the present invention provides an information medium (hereinafter referred to as an ID counter) into which information about mounted components is inputted in advance and which can exchange information with a mounting apparatus, and a read/write system. It is equipped with a head.

Effect of the Invention With the above-described configuration, the present invention automatically checks the mounting position of the parts cassette before mounting the parts.

Furthermore, since the information medium and the controller of the component mounting apparatus exchange information easily, the management of the mounted components becomes more accurate.

EXAMPLE An example of the present invention will be described below with reference to the drawings.

FIG. 1 shows a schematic external view of the device of the present invention. 1 is a parts cassette, each of which has an ID counter 2 attached thereto. 3 is a component supply device fixing stand. A read/write head 4 that communicates information with the ID counter is attached to the mounting position of the component mounting apparatus, and transmits information from the ID counter of the parts cassette that has arrived at the mounting position to the controller of the component mounting apparatus. .

FIG. 4 shows a perspective view of the ID counter and read/write head. Information such as the installation position of the parts cassette and the amount of remaining parts is communicated through optical communication between the two, indicated by arrows.

In the above configuration, the operation will be explained below.

First, a method for confirming the parts cassette attachment position will be explained with reference to FIG.

First, the mounting position of the parts cassette is input into the ID counter (step 6). The parts cassette with an ID counter whose mounting position has been input is mounted at that position on the fixed base of the parts supply device (Step 7). The first parts cassette is moved to the mounting position, and the read/write head reads the mounting position (Zn) of the parts cassette from the ID counter (Step 8). The contents are transmitted from the read/write head section to the controller (step 9), and it is determined whether the mounting position of the controller rubber parts cassette is correct (step 10). The above step 819.10 is repeated n times (t<-number of sets)
After repeating the process, if the parts cassette mounting position is incorrect, the parts cassette mounting position is corrected (step 11). If the mounting position of the parts cassette is correct (the mounting has become correct after correction), the parts can be mounted.

As described above, the parts cassette mounting position can be automatically confirmed before mounting the parts.

Next, components are mounted, and the third method is to manage the number of components at that time.
This will be explained with reference to the figures. First, input the number of parts into the ID counter (Step 12), then attach the parts cassette with ID counter to the component mounting device, confirm that the mounting position is correct as described above, and then start mounting. The number of parts in the parts cassette that has arrived at the mounting position is transferred to the controller (step 13). The component mounting device mounts the component (Step 14) and at the same time decreases the remaining component amount of the ID counter of the parts cassette in which the component is mounted by one (Step 16) above in Step 14115.
The implementation is completed by repeating the steps.

Through the above operations, the information on the remaining amount of parts on the ID counter matches the actual amount of remaining parts, and since the read/write head transmits the remaining amount of parts to the controller, it also matches the information on the remaining amount of parts on the controller. do.

Effects of the Invention As is clear from the above explanation, the present invention enables automatic confirmation of the mounting position of a component before mounting the component based on the information for each component in the information medium of the component supply device, and furthermore, By being able to count the remaining amount of each component on the information medium and the remaining amount of components on the component mounting device at the same time, the object and the information match. As a result, setup change times associated with high-mix, low-volume production can be shortened, and mounted parts can also be managed accurately.

[Brief explanation of the drawing]

FIG. 1 is a schematic external view of the device according to the present invention, FIG. 20 is an operational flow diagram for checking the mounting position of a parts cassette according to the present invention, FIG. 3 is an operational flow diagram for counting the remaining amount of parts according to the present invention, and FIG. FIG. 4 is an external perspective view of an ID counter and a read/write head, and FIGS. 6 and 6 are operational flowcharts of conventional parts cassette mounting position confirmation and parts remaining quantity counting. 1... Parts cassette, 2... ID counter ((information medium), 4... Read/write head. Name of agent: Patent attorney Akira Okaji and 2 others 4 °
Sword Dry head Fig. 1 Fig. 2 Fig. 13 Fig. 4 Fig. 5 Fig. 6

Claims (2)

[Claims] (1) A parts cassette equipped with an information medium equipped with a means for processing parts information (parts type, quantity, and installation position of the parts cassette) and a means for communicating the parts information with a read/write head, and a parts mounter as described above. A component mounting device in which a parts cassette is installed at a mounting position for supplying components to a mounter head, and includes a read/write head that mediates information transmission between an information medium of the parts cassette at the mounting position and a controller of the component mounter. Machine parts supply device. (2) The step of inputting component information and the step of decrementing the remaining amount of components in the information medium and the controller of the mounting machine by one through the read/write head each time component mounting is performed. How to use the component feeding device of the component mounter.