CP643 系统参考.pdf - 第127页

1.16 T urnover Production In certain sequences, the parts on the device table are arranged so that after a certain board is finished, the device table for the next board has to move a long distance before starting on the…

1.15 Terminate Sequences

A terminate sequence can be set to ensure that all sequences up to and including the

terminate sequence are carried out, before the machine proceeds with the sequences after

the terminate sequence.

For example, consider the case where an SOJ is to be placed on top of a 1005 chip. If

recovery is carried out for the 1005 due to an initial failure to place that part, then it is not

possible to place the 1005 later since the SOJ will already have been placed. By setting a

terminate flag at the 1005, the SOJ cannot be placed until the 1005 has been placed.

A terminate flag is set in the sequence data of a production program.

Similarities and Differences Between Placing Parts Based on Part Height and Placing

Compared to Changing Placement Specifications Based on Part

Height

Similarity

The parts are allocated in a similar manner.

Differences

Parts Height Terminate Sequence

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Use of Proper data settings Yes No

Method of recognition Automatic Production program

Number of placement changes Single Multiple

Part 2 Chapter 1 Basic Operation

Edition 1.1 2-1-69 CP643E System Reference

1.16 Turnover Production

In certain sequences, the parts on the device table are arranged so that after a certain

board is finished, the device table for the next board has to move a long distance before

starting on the next board (E.g.: from D140 to D1). In this case, in order to minimize the

time spent waiting for the board to change, the placing sequence can be read from front

to back, and then from back to front, switching each time a new board is loaded. This

means time is not lost waiting for the device table to return to its original position every

time a new board is loaded. This is called "turnover."

During turnover production, the sequence order is reversed every second board, but the

fiducial and block skip marks are always read before placing.

Turnover production can be enabled/disabled by selecting the command sequence

[SET] – [STATUS] – [ETC] – [TURNOVER]. Depending on the direction of production,

either “Normal Turnover” or “Reverse Turnover” will be displayed.

Caution: After turnover is canceled the sequence will execute in correct order. Therefore, be

careful not to cancel the turnover mode while the sequence is operating in reverse order.

Part 2 Chapter 1 Basic Operation

Edition 1.1 2-1-70 CP643E System Reference

1.17 Changeover

1.17.1 Changeover

• If the distance between the right edges of the 1st and 2nd boards is changed, perform

the adjustments described below as required for the boards in question.

• Position of the reference pin of the second board and the positions of the follow-up

pins for the first and second board.

• Mid-stopper position for the second board (when two-board production)

• The maximum board width for 2-board production becomes the (maximum board

length - board distance) / 2.

The maximum board size is (Maximum board width, 457 mm (L) - Board distance, 15

mm) / 2 = 221 mm, and set at 220 mm in the specifications.

The board distance is the gap distance between the first board and the second board,

and in the design, the minimum board distance is 15 mm. Also, since the stopper for

the second board on the conveyor is the movable type, the board distance can vary.

However, if the board's length L is less than 80 mm, the board distance, in the case that

second board production is performed, becomes 90 mm minus board length due to

limitations in

the range of movement of the second board stopper on the conveyor. For

example, if the board's length L is 50 mm, the board distance is 95 mm - 50 mm = 45 mm.

• The first production board size is 50 (W) 50 (L) to 356 (W) 457 (L) mm.

• The second production board size is 50 (W) 50 (L) to 356 (W) 220 (L) mm.

• Since board clamping references the bottom surface, adjustment of the height of the

backup pins is not necessary even if the thickness of the board changes.

• Conveyor width change

Advance the out-carrier, raise the XY-table at the unloading position and then link the

conveyors. (An adjustable rail engage check is carried out when the XY-table rises.)

A change in the width of the main conveyor on the XY-table is carried out as a follow

up to the out-carrier. The width of the in-conveyor, in-carrier and out-carrier are also

changed after being joined to the out-conveyor.

1.17.2 Function for Checking the Distance Between Boards

This function performs a check to determine whether the mid-stopper is at a position

that matches the production program and therein checks the distance between the first

and second board.

When the program is transmitted to the foreground or after a program change has been

carried out, the distance between board 1 and board 2 is checked when automatic

operation is entered.

The display for checking the distance between boards is entered when one of the

following conditions applies.

• Immediately after a reset-start.

• If the PCB_Distance differs between the previous program and current program after a

program change.

The following Proper data item must be set to operate this function.

pcb_distance_check_sw

Specify whether a check of the stopper position is to be carried out (Yes or No).

The default setting is “Yes”.

Part 2 Chapter 1 Basic Operation

Edition 1.1 2-1-71 CP643E System Reference