Method for mounting carrier belt and programmable read-only memory

Abstract

The present invention provides a mounting method for a carrier tape and a programmable read-only memory that can continuously perform program writing to a PROM and mounting to a printed wiring board by a general-purpose mounting machine on the same production line. An adhesive part (6) for positioning the programmable read-only memory (7) is formed on the carrier tape (1), and a through hole (8) and a feed pitch consistent with the mounting machine (10) are pierced. The sprocket hole (2), the through hole (8) makes the contact foot (7a) of the programmable read-only memory (7) positioned on the carrier tape (1) and the batch processing writer (9) The writing terminal (19a) is in contact with each other. The programmable read-only memory (7) positioned on the carrier tape (1) can be transported to the batch writer (9) and the mounting machine (10) using the same production line at the feeding pitch of the mounting machine (10).

Description

technical field [0001] The present invention relates to a carrier tape for conveying and supplying a field-programmable Programmable Read Only Memory (Programmable Read Only Memory) to a mounting machine, and a mounting method for a Programmable Read Only Memory conveyed by the carrier tape, more specifically , The present invention relates to conveying and supplying a carrier tape of a programmable read-only memory written with a program before mounting on a printed wiring board and a method of mounting the programmable read-only memory. Background technique [0002] As the read-only memory (Read Only Memory) of the storage device, the content of the written program will not change when the power is not connected, so it is used to store the boot program for starting the system or the application program for controlling the fixed system memory. Among them, the mask read-only memory (Mask Read Only Memory) programmed at the time of manufacture has no loop for writing program...

AI Technical Summary

Problems solved by technology

[0014] In addition, the postures of the blank PROMs accommodated in the pockets of the carrier tape 104 are different. In order to make the contact legs of the blank PROMs contact the write terminals of the IC socket of the batch writer 108, a PNP Head 107 The process of inserting a blank PROM into the IC socket becomes difficult and takes time

Therefore, even in the case where a plurality of IC sockets are provided on the batch writer 108 to simultaneously write programs into a plurality of blank PROMs in order to shorten the time spent in the program writing process, each blank PROM It takes time to insert the IC socket, so there is a limit to shortening the work time

[0015] Furthermore, when the PROM with the program written therein is conveyed to the mounter 102, since it is stored in the bag 109a of the buffer belt conveyor 109 and conveyed, the postures of the PROM are different, and a PNP head is used. 112 It is very difficult and time-consuming to install the PROM on the printed wiring board 110 so that each contact foot of the PROM is arranged on the corresponding pad pattern of the printed wiring board 110 without deviation

[0016] In addition, the general-purpose mounting machine used to mount various devices on the printed wiring board 110 uses a PNP head to take out the device supplied by the carrier tape whose feeding pitch is determined according to the mounting machine, and automatically mounts it on the printed wiring board 110. Wiring boards, therefore, cannot be connected to the production line of the batch processing system 101 that conveys PROMs with a buffer belt conveyor 109, and thus cannot use a general-purpose mounting machine

[0017] On the other hand, in the case of using a general-purpose mounter, it is necessary to prepare a carrier tape having sprocket holes matching the feed pitch of the general-purpose mounter, and store the PROM with the program on the carrier tape again, which may damage the Due to the continuity of the process between the batch writer and the mounting machine, the program writing to the PROM and the mounting to the printed wiring board cannot be continuously performed on the same production line

Images