CP643 系统参考.pdf - 第118页

1.12.6 Next Board Supply Timing The use of a new board transport mechanism provides an improved cycle time over the conventional board transport system. If the board were transferred from the in-conveyor to the in-carrie…

1.12.5 Backlight and Frontlight

Vision processing is carried out at Station 6. The lighting format can be selected as either

a backlight or a frontlight format.

Details on setting the type of lighting system in Proper and Part Data follow:

[Proper]

138. Front Light : Specifies whether or not front lighting is used.

Non: . . Not fitted

Use: . . Fitted

Note: “Use” is specified in standard specification systems.

[PART DATA]

Vision_data

13. Lighting : This item selects which lighting will be used.

0: Back_Light

1: Front_Light

4: Side_Light . . . . . (Option: Special front light)

Caution: “2” and “3” lighting settings are not used on the CP643E.

Note: If ‘Lighting’ is set to “2” or “3”, operation for “0” (Back_light) is carried

out.

1. Start the VPD.

2. Open the “Part Type Data” in the relevant part data.

3. At the [Camera] - [Lighting] item, specify the desired part image acquisition format.

Part 2 Chapter 1 Basic Operation

Edition 1.1 2-1-60 CP643E System Reference

1.12.6 Next Board Supply Timing

The use of a new board transport mechanism provides an improved cycle time over the

conventional board transport system. If the board were transferred from the in-conveyor

to the in-carrier after the completion of production, the cycle time would be the same as

the conventional one.

It is necessary for the next board to already have been transported on the in-carrier at the

completion of production by the way of the instruction for the next board to be

transported during production. The standard timing is 40 sequences prior to the last

sequence but it is possible to change this in the program depending on such things as the

total number of sequences and the cycle time. (If this is set to “0” transport will not

begin until two boards are completed.)

1.12.7 Placing Sequence Assignment When Next Production Starts

In conjunction with the use of a new board transport mechanism to realize an improved

cycle time over the conventional board transport system, production efficiency has also

been improved through a timing change in the assignment of sequences for production

of the next board.

Until now, sequences were assigned in order with the first sequence assigned to ST16 at

the time production of the next board began (when pre-picking began). The first

sequence for the next board (pre-pick sequence) is now assigned to ST16 when the vision

processing of the last sequence has been completed and recovery sequences have been

eliminated.

Conditions for assigning pre-pick sequences

Pre-picking is carried out when all of the conditions below have been met.

• Normal vision processing result returned for the last sequence (ST8)

• No recovery sequences

• Number of boards to be supplied next has been determined

• No block skip marks

• Not in turnover production

If the above five conditions are not satisfied, sequence assignment is carried out, just as it

has been until now, when production of the next board starts.

Maximum number of pre-pick sequences

Since the vision processing result of the last sequence is determined at ST8 and the first

sequence for the next board is assigned to ST16, the maximum number of pre-pick

sequences is four.

If recovery has occurred

If recovery takes place the pre-pick sequences assigned to the head are cleared and

normal recovery sequence processing is carried out. Pre-pick parts are not used for

recovery.

Part 2 Chapter 1 Basic Operation

Edition 1.1 2-1-61 CP643E System Reference

1.12.8 D-axis Positioning When Next Production Starts

The use of a new board transport mechanism provides an improved cycle time over the

conventional board transport system, but if a large movement in the device table is

required for picking parts for the next board after placement on the first board is

completed, the result will be to reduce the improvement in the cycle time.

A change in the timing of D-axis positioning when next production starts has been

implemented to reduce the lost time associated with D-axis movement. Once vision

processing for the final sequence is complete, and any recovery sequences complete, the

D-axis is positioned at the first pick-up device. For programs that include block skip

marks, pre-pick sequence processing is not carried out in the same way (positioning at

the first pick-up device). However, if there is no setting in Proper data, the D-axis

position will be positioned at the No. 1 device position. (D-axis return processing)

D-axis return conditions

• Normal vision processing result for the last sequence (ST8)

• No recovery sequences

• Number of boards to be supplied next has been determined

• Not in turnover production

• No block skip marks (Proper data setting is required to carry out D-axis return if a

block skip mark is detected.)

If the five conditions above are not satisfied, D-axis return is carried out when

production of the next board starts, just as it has been until now.

ST1 nozzle up/down / tape feed up/down upper limit check

If the ST20 head is a skipped head then just as has been the case until now, stoppers are

engaged to prevent the ST1 nozzle and tape feed cylinder from descending. Furthermore

if ST20 is not a pick-up head, since the cam axis will rotate even if D-axis return is in

progress, an upper limit check is carried out for the nozzle and tape feed cylinder at this

time as a safety measure. If the nozzle or tape feed upper limit check sensor is OFF when

the stoppers are engaged, an emergency stop occurs.

The error messages are as follows.

In the case of a nozzle upper limit error,

ST1 : Nozzle up/down error

ST1 : UP-lmt sensor OFF

In the case of a tape feed cylinder upper limit error,

Tape feed cylinder error

These upper limit checks are carried out while the D-axis is moving.

In addition when ST1 pick-up is carried out, a check is also performed to determine

whether the ST1 nozzle upper limit is OFF. The error messages are as follows.

ST1 : Nozzle up/down error

ST1 : UP-lmt sensor ON

D-axis position processing when pre-picking and automatic operation start

As has been the case until now, D-axis positioning when automatic operation starts

(including pre-picking) means that positioning at the device position to which the

sequence has been assigned is carried out even if the ST20 head is skipped.

However, until now the start of automatic operation waited until D-axis positioning was

finished. If the ST20 head is skipped, automatic operation starts without waiting for

positioning to finish since the cam axis does not stop but continues to rotate during D-

axis return just as it does.

Part 2 Chapter 1 Basic Operation

Edition 1.1 2-1-62 CP643E System Reference