Công nghệ SMT máy DEK mô đun print carriage module

PRINT CARRIAGE MODULE OVERVIEW CHAPTER 8 PRINT CARRIAGE MODULE OVERVIEW Item Description Item Description 1 Print Carriage Solenoids (Cover Shown Transparent) 6 IO Node Board 3 (Behind Panel.............

Trang 1

Chapter Issue 4 Dec 09 Technical Reference Manual 8.1

CHAPTER 8 PRINT CARRIAGE MODULE

OVERVIEW

1 Print Carriage Solenoids (Cover Shown Transparent) 6 I/O Node Board 3 (Behind Panel)

5 Squeegee Drip Tray

Print Carriage Front View (Squeegee Mechanism Fitted)

1

2

4 5

6

7

8

9 8

3

Trang 2

4 Print Carriage Home Vane

Printhead Plan View

7

6

2 1

3

4

5

Trang 3

The print carriage enables the following modules to carry out their functions:

• Printhead Assembly - to transverse across the screen in the Y direction (print stroke - automatically set from the board width parameter)

• Paste Dispense Module - to supply paste at the required position of the print stroke

• Screen Change Module - to perform a screen load or screen change

NOTE Two types of the printhead assembly are available for fitment to the print carriage:

a Squeegee

b ProFlow Information on both types are detailed in the relevant module chapter of this manual.

All positioning of the print carriage is referenced from the home position and calculated in the machine software, taking into account:

• Board width

• Front and rear print limits

• Front rail justification The print carriage only homes during initialisation, which can be from power-up

or exiting diagnostics

I/O Node Board 3, located inside the print carriage extrusion, has an onboard temperature and humidity sensor For information on I/O Node Board 3 refer to the Machine Control Chapter

For information on the print carriage solenoids refer to the Pneumatics Chapter and the relevant module chapter

Trang 4

ELECTRICAL SCHEMATIC

1 2 4 5

1 2 3 4

Distribution PCB

1 2 3

0V Signal 24V (L)

7 2 3

2 3 7

1 2 4

CAN_H CAN_L

2 3 7

Encoder/ Decoder CAN Encoder/ Decoder

T &

Humidity Sensor

Trang 5

ADJUSTMENTS AND SETTINGS

Home Sensor Adjustment

WARNING BOARD CLAMPS EXTREME CARE MUST BE EXERCISED WHEN WORKING IN THE TOOLING AREA OF THE MACHINE TO AVOID INJURY THE FOILS ON THE FRONT AND REAR BOARD CLAMPS ARE VERY SHARP.

1 Select Unload Screen.

2 Open the front printhead cover

3 Remove the screen from the machine

4 Close the front printhead cover

5 Press the System button.

6 Select Maintenance.

7 Select Diagnostics.

8 Use Next or Previous to highlight Print Carriage.

9 Select Select Module.

10 Ensure that Home Print Carriage is highlighted.

11 Select Run Diagnost.

12 Use Next or Previous to highlight Drive Carriage To Rear Position.

14 Open the front printhead cover

Trang 6

15 Measure the horizontal distance between the inside face of the front rail belt support plate and the print carriage machined face, (squeegee/ProFlow

interface area), the correct setting being 612.0mm +/- 2.0mm.

16 If the adjustment is correct go to Step 22

17 Gain access to the print carriage home sensor vane on the right hand

Front Rail

Machine Plan View

Print Carriage Machined Face

Home Sensor

Vane

Right Hand Printhead

View on Arrow A

View on Arrow B

Belt Support Plate

612mm +/- 2.0mm

A

B

Trang 7

printhead

18 Adjust the position of the home sensor vane

21 Repeat Steps 10 to 16 until this measurement is achieved

22 Refit the screen

25 Select Exit.

26 Select Exit.

27 Select Back.

Print Carriage Home Sensor

Print Carriage Home Sensor Vane

View On Right Hand Printhead

Trang 8

REPLACEMENT PROCEDURES

Timing Belt To replace the print carriage timing belt, carry out the following procedure:

1 Select Open Cover Commands.

2 Select Carriage to Front.

3 Select Back.

4 Select Shut Down.

5 Select Continue.

6 Switch the mains isolator to OFF.

7 Gain access to the right hand printhead

8 Locate the rear print carriage timing belt clamp on the inner face of the right hand printhead Loosen the two belt securing screws and remove the belt end from the clamp

9 Unthread the timing belt from print carriage motor pulley and idle pulleys

10 Locate the front print carriage timing belt clamp on the inner face of the right hand printhead Loosen the two belt securing screws, remove and discard the timing belt

11 Fit the replacement timing belt into the front belt clamp and tighten the securing screws sufficiently to hold the belt

12 Thread the timing belt under the front print carriage idle pulley, over the print

Trang 9

carriage motor pulley and under the rear print carriage idle pulley

13 Fasten the belt to the rear belt clamp using the belt securing screws tightened sufficiently to hold the belt

14 Loosen the rear belt clamp securing screws sufficiently to allow clamp movement

15 Loop a cable tie around the clamp

View on Right Hand End of Print Carriage

Front Idle Pulley

Print Carriage Motor Pulley

Timing Belt

Direction of Timing Belt

Forcemeter

View on Rear of Machine

Trang 10

16 Attach a forcemeter to the cable tie and apply a horizontal force of 12kg.

17 Tighten the rear belt clamp securing screws whilst maintaining the tension

on the belt

18 Remove the forcemeter and cable tie

19 Refit any covers removed in Step 7

20 Power up the machine

21 Select Maintenance.

22 Select Diagnostics.

23 Use Next or Previous to highlight Print Carriage.

24 Select Select Module.

25 Use Next or Previous to highlight Cycle Print Carriage.

27 Ensure the print carriage moves smoothly over it’s full range of travel

28 Select Stop.

29 Select Exit.

30 Select Exit.

31 Select Back.

Trang 11

CALIBRATIONS

Temperature/

Humidity Sensor

The temperature/humidity sensor (located on I/O node board 3) is calibrated at manufacture and is not adjustable

NOTE I/O node board 3 is located inside the print carriage extrusion and the temperature and humidity are measured at this point Due to heat sources, movement and air flow, it must be expected for the temperature and humidity to vary throughout the machine.

Trang 12

CALIBRATIONS

Định dạng
Số trang	12
Dung lượng	1 MB