JPH035080B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a knitting machine for selecting and ordering ICs used in a pre-process of an automatic IC (abbreviation for semiconductor integrated circuit) insertion machine.

Automatic IC inserters are used in the circuit assembly of electronic devices, but the number of IC magazines that can be selected is limited due to the structure, and the range of IC inserters that can be selected is limited to a few dozen types.

Fig. 1 is a structural diagram of a commonly used IC insertion machine, in which Fig. 1 shows magazines 1 arranged vertically, and Fig. 1 shows magazines 1 arranged diagonally. Others are arranged in a ring shape, but in either case, the number of magazines 1 that can be mounted is limited due to the structure.

Furthermore, if it is necessary to selectively insert a wide variety of ICs, a sequencer is used to arrange the ICs in advance according to the insertion order, and this magazine is attached to an automatic inserter for use. In this case, the wider the selection range of IC varieties, the more time it takes to investigate and detect them, so expanding the number of varieties naturally imposes economic constraints, and less than 100 varieties are considered to be the current practical limit. . However, with the development of ICs and LSIs, circuit configurations have become more sophisticated and complex, and even one type of printed wiring board has come to use dozens of ICs.
In order to automate the assembly of printed wiring boards of various types, it is necessary to realize inserting or organizing machines for hundreds of types of ICs.

The object of the present invention is to organize such a wide variety of ICs. In other words, multiple magazines each containing different types of ICs are divided into multiple groups and placed in parallel along a conveyor that moves at a constant speed to transport the ICs, and each group is placed on the conveyor. A corresponding photodetector is provided, and an output signal for taking out ICs from the magazine 11 in the order of arrangement is generated based on the signal from the photodetector and the data stored in the memory according to the IC selection processing routine program. Equipped with a control unit for advance discharge
After detecting and confirming the passage of the preceding IC ejected onto the conveyor based on the mutual position data of the IC and the magazine to which the next ejected IC belongs and the optical detection signal, the control unit controls the ejection of the subsequent IC. By using an IC knitting machine, we aim to expand the selection of IC types and realize high-speed, highly flexible IC alignment and knitting.

Examples according to the present invention will be described in detail below.

FIG. 2 is a configuration diagram of a D1P type IC knitting machine according to the present invention. The IC magazines 11 are all arranged in parallel, and in this embodiment form a group of 10 magazines. In addition, in FIG. 2, five wires are shown as one group for convenience. Furthermore, this group is arranged in parallel as a unit.

A conveyor 12 is provided below the magazines 11 arranged in parallel, and the ICs 13 discharged from each magazine 11 are conveyed at high speed to the left in the figure by the conveyor 12 and arranged in an IC organized supply section 16. be accommodated. Photodetectors 15 are arranged perpendicularly above the conveyor 12 on the side of the conveyor 12 in front of the leading end of each group in the running direction, and detect the passage of ICs sent on the conveyor 12. In FIG. 2, three photodetectors 15a, 15b, and 15c are arranged from the left as three groups for explanation. If the groups are now A, B, and C from the left, the photodetector 15a,
b and c belong to the respective groups on the right side. Then, the relative positions of the magazines loaded with the preceding ejection IC and the next ejection scheduled IC are determined.
After the IC confirms that the group to which it belongs passes the photodetector, it is ejected in advance.
Delay time until the IC passes through the photodetector of the group to which the next IC scheduled for ejection belongs, or the next ejection IC is ejected first.
This is set as the delay time until the IC passes through the photodetector of the group to which it belongs, and while confirming the passage of the IC from the photodetector signal, the output signal from the control unit (not shown in the figure) is used to detect the next ejecting IC. Ejects the magazine. If the speed of the conveyor 12 is v, and the time it takes for one group to pass through the interval p is t, then t=p/v. For example, the emission of IC13 in group C is 2p/v
The photodetector 15a detects it with a time delay of =2t.

Next, the IC 13 accommodated in the magazine 11 of each group
ICs 13 that are more likely to be used are arranged closer to the left end of the conveyor 12, and this group arrangement is determined according to the production plan. Furthermore, the magazines 11 of each group are concentrated with those that are most likely to be used for the same printed circuit board. Each group always emits one piece,
A signal is obtained from the photodetector 15 to confirm passage, and the next discharge is performed. Multiple discharges will not be performed at the same time.

FIG. 3 is a flowchart of a processing routine program for controlling an IC knitting machine according to the present invention.

This flowchart will be explained step by step below.

IC1 according to the plan to organize after the start of the program
Read the discharge order data of 3. The distance ln (L+mP) from the end of the transport conveyor 12 of the group number and magazine number of the n-th IC 13 to be discharged is stored in the memory α. Next, the group number, magazine number, and distance ln+1 of the (n+1)th IC 13 to be ejected next are stored in the memory β. Once this preparation is complete,
Ejects the specified IC13. Next, the photodetector 15 belonging to the group that ejected the nth IC 13
Give them a delay time until they reach the destination and ask them to confirm the passage.
If “No”, it is displayed as if the IC has not been ejected and the process is stopped. If the passage is confirmed with “Yes”, then the memorized distance ln between α and β
and ln+1. That is, if the n+1st discharge is closer to the end of the transport conveyor 12 than the nth one, that is, ln>ln+1, then the answer is "yes", and the delay time to reach the photodetector 15 of the group to which the n+1st belongs is transmitted, and the light The detector 15 is put on standby. If it is not detected within this set time, it is determined as "no" that there is an abnormality, and the conveyor 12 is displayed as having become caught during transportation, and is stopped. If the passage is confirmed as "yes", it is considered normal, and in order to proceed to the next process, the stored contents of the n+1th data are transferred from β to α, and the next discharge operation is repeated again. If ln+1>ln is "no", that is, if the n+1st magazine is discharged at a farther distance on the conveyor 12, there is no need to check the photodetector of the group to which the n+1st magazine belongs, so the n+1th magazine is immediately The data storage contents are transferred from β to α, and the process returns again to begin the next discharge operation.

As described above, the IC13 discharge formation is carried out in accordance with the specified order of formation. Distance ln and ln+1 depending on the group and the selected arrangement of IC 13 of magazine 11 in the group
The discharge time can be shortened by making the two parts as close as possible.

As described above, according to the present invention, with an extremely simple configuration, it is possible to eject and arrange ICs at high speed in a desired order without relating the operation of the transport conveyor 12 that moves at high speed to the IC ejecting operation. ,
If the photodetector does not confirm that the IC has passed, the device will be stopped, and if the configuration of the present invention is used, it will be possible to identify the
It is possible to provide an IC knitting machine with an extremely high degree of freedom, which has the effect of easily interrupting or deleting ICs.

[Brief explanation of the drawing]

FIG. 1 is a structural diagram of a commonly used IC insertion machine. FIG. 2 is a block diagram of a D1P type IC knitting machine according to the present invention, and FIG. 3 is a flowchart of a processing routine program for controlling the IC knitting machine according to the present invention. In the figure, 11 is a magazine, 12 is a conveyor, 13 is an IC, 15 is a photodetector, and 16 is an organized supply section.

Claims (1)

[Claims] 1. A conveyor 12 that moves at a constant speed;
Above the transport conveyor 12, there is a magazine 11 loaded and accommodated with ICs of different types arranged in parallel and vertically in groups, and a group is arranged on the transport conveyor in front of the leading magazine of each group in the direction in which the transport conveyor runs. A photodetector 15 for confirming the passage of ICs installed at each IC, an IC organized supply unit 16 installed at the tip of the conveyor 12, and position data of magazines containing adjacent ICs in the required arrangement order. With two memories (α and β) for sequential storage, the signal from the photodetector 15, and the data stored in the memories (α and β),
It is equipped with at least a control unit that issues an output signal for taking out ICs from the magazine 11 in the order of arrangement according to the IC selection processing routine program, and a photodetector and comparative data of the relative positions of the magazines to which the preceding ejected IC and the next ejected IC belong. An IC knitting machine characterized in that, after detecting and confirming passage of a preceding IC discharged onto a conveyor based on a signal, the control section controls discharge of a succeeding IC.