User-Manual-of-NeoDen4-PNP-machine.pdf - 第20页

15 that a componen t is attac hed to the nozzle and ana lyze its po sition to compensate for X-Y and rotational errors be fore traveling to pla ce the component on the bo ard. For large ICs, choose “large componen t” in …

the vision system is active.

Feeder information

Figure 4.13

Function: Adjust the value for feeder and peeler, see the Figure 4.13

Peel Strength: Support do adjustment according to different components’ required strength, default

value 100

Feed rate: Adjust the feed & peel distance by changing the value

Feed torque: Adjust the feed strength by changing the value, default value 60

Feed test: After finishing above steps, can click this item to test the feed status

4.3.2Feeder Basic information

Figure 4.14

(1) Pick X/Y: First have to lock the position of component on the feeder, once saved the

modification, the XY date will automatically change to the ones after alignment. See the Figure 4.14.

NOTE: For feeders installed in the far back of the machine (often feeders 18 and 19 on the left side)

the camera, which is mounted on the front of the head, will not be able to be moved far enough to

view the necessary location. For these feeders, after clicking “Align”, select the desired nozzle as

the “Alignment method” on the right side of the screen. Then use the mouse to move the nozzle to

the desired pick location, and slowly pull the vertical slider down to lower the nozzle. Continue to

fine-tune the location of the nozzle until it is centered in the hole in the tape. Click save.

(2) Pick Angle: The initial default angle of the right-side feeders is 90 degrees, the initial default

angle of the left side feeders is -90 degrees, normally does not need to be changed because the

machine automatically sets this value based on the feeder’s location on the left or right rail. For

trays and sort tapes, however, this value may need to be changed to 0 or 180.

(3) Footprint: Select corresponding footprint, when use the function “Vision Alignment”, will refer

to the values in date base. If the correct size is not in the menu, it is possible to create new footprints

by entering the footprint library.

(4) Vision Alignment: The Vision Alignment setting is normally set at “Individual.” This setting

directs the NeoDen4 to transport each “picked” component to the upward-looking camera to ensure

that a component is attached to the nozzle and analyze its position to compensate for X-Y and

rotational errors before traveling to place the component on the board. For large ICs, choose “large

component” in this field.

(5) The Pick Height setting is critical to reliable operation. The nozzles offer 12 mm of total

downward travel from their resting position in the head. The value entered in this field represents

the distance in millimeters from the maximum extension. Therefore, smaller values indicate greater

downward travel. The best way to choose this value is to press “Align,” ensure the camera is

properly centered over a component, and then select an appropriate nozzle as the alignment method.

Drag the vertical slider down until the nozzle gently touches the component, and note the value

shown – this is the value to be entered in the “pick height” field. Should you notice repeated failures

to pick a part, the pick height may need to be reduced.

(6) The Place Height setting determines the extension of the nozzle when the component is released

into the solder paste. Proper setting of this parameter is important to protect components and

nozzles, and to ensure accurate placement. We recommend the following procedure:

Mount a PCB in the rails or magnetic fixtures;

In the “Nozzle information” area, check the nozzle (or nozzles) appropriate for the component in the

feeder.

Press “Pick.” The Head will move to the feeder and the designated nozzle will pick up a part. Verify

visually that a part is attached to the nozzle.

Go to the PCB Information page, and click “Align” on any component. Select the nozzle holding

the picked component as the Alignment Method. The component should now be held by the nozzle,

suspended above the PCB.

Slide the vertical slider down slowly until the component barely contacts the PCB – usually, you

will hear a small click when the component touches down.

Note the value shown by the slider display and enter it in the Place Height field.

The Pick Delay and Place Delay settings allow a short pause after a nozzle comes into contact with

a part, and before it leaves contact. This small pause allows for stable vacuum and cessation of any

vibration from the rapid movement of the head that might cause imprecise placement. We

recommend entering a value from 100-300 in these two fields for every feeder.

The Move Speed setting has a default value of 100. This is a very fast setting, and users are advised

to start with a slower setting, e.g. 70 for each feeder to verify proper operation of a program. Once

satisfied with the program and its accuracy, faster settings may be attempted. For very large

components, start with a much slower setting, e.g. 30.

Vacuum Discard: Once set one vacuum value which help judge if qualified or not before placement.

Once the actual vacuum won’t reach this range, the machine will drop away this components and re-

pick one. We therefore do not recommend its use except in special circumstances.

Skip: Once select this item, will skip all placement for this feeder.

4.3.3 Tray feeder information (available for feeder 54-98)

Figure 4.15

Function: Use to set the components’ information from tray and tube packages, complete picking up

operation for special feeders by changing the values, see the Figure 4.15.

(1) Column: Quantity of components on each column

(2) Row: Quantity of components on each row

(3) Right top X/Y: Find the position of right top component, this component is usually the last

component in IC tray, and left bottom side is the first component in IC tray.

(4) Start X/Y: This setting is used to define the position of 1st component, its default setting is X1,

Y1 (in 1st column, 1st row). If the 1st component is on 2nd column, 1st row, you can enter X2, Y1.

After finish setting of all above feeders’ information, then click “assign feeder and nozzle to Chip

list”, the NeoDen4 will automatically select the appropriate feeder and nozzle for each component

in the Component List.

4.4

Running the program

On the P&P Programming page, select the program you wish to run and press “Mount”.

If the vibration feeders are needed, activate them with the checkbox.

Place a PCB on the magnetic fixtures or load one into the rail system so that the PCB is in snug

contact with the guide belts.

There are two ways to run a program: Step Mode and Continuous Mode. Pressing step will cause

the NeoDen4 to execute the program one move at a time. This can be helpful in troubleshooting or

double- checking the integrity of a program before letting the machine run free. Pressing

Continuous will cause the program to run on its own. The NeoDen4 will first check each nozzle

called for by the program. It will the locate the fiducials on the board and begin placement

operations.