W-Pressing Assembly. the top W roller thus creating a uniform and constant pressure between and throughout both top and lower W rollers.

Transcription

1 PRODUCT: NUR Fresco HiQ 3200 ISSUE DATE: 10-Sep-02 SOFTWARE AFFECTED: YES NO TYPE OF CHANGE: MANDATORY COST PRODUCTION MAINTENANCE PROJECT MANAGER: SIGNATURE/DATE PART/ASSEMBLY: FCO KIT P/N: W-Pressing Assembly DESCRIPTION OF CHANGE: APPLICABLE FOR S/N: Installation of an assembly NUR Fresco HiQ 3200 that will exert pressure on Up to # the top W roller thus creating a uniform and constant pressure between and throughout both top and lower W rollers. IMPLEMENTATION: ON REQUEST IMMEDIATE NEXT CALL ON FAILURE/COMPLAINT MATERIAL DISPOSITION: CONDITIONAL N/A RELIABILITY USE AS SPARE FUNCTIONALITY DISCARD ALL PREPARED BY: Alex Davidson DISCARD SELECTIVELY (refer to Mat l Disposition) SEND BACK FOR REWORK ENGINEERING MANAGER: ICS MANAGER: SIGNATURE/DATE SIGNATURE/DATE Field Change Order Read this document carefully before implementing the Upgrade! 2-Sep-02 FC Page 1 of 16

2 Table of Contents 1. General Reason for Change Estimated Installation Time Tools Required: Implementation Installation Adjusting Logistics Appendix W Pressing Assembly Table of Figures Figure 1: Indicator and Magnetic Base on X-axis Beam... 5 Figure 2: New Pressing Assembly Parts... 5 Figure 3: Support Arm On Old Assembly Figure 4: Pressing Assembly Base... 6 Figure 5: Supporting brackets... 7 Figure 6: Securing the Side Brackets into New Assembly Unit... 8 Figure 7: Mounting New Side Brackets into Support Brackets... 8 Figure 8: Arm Tower Fitted into Base Assembly... 9 Figure 9: Adjustable Spring Figure 10: Support Arm into Base Assembly Figure 11: Installing the Adjustable Arm Figure 12: Vacuum Plate Support Arm Figure 13: Vacuum Tubes and Hose Figure 14: Full Pressing Assembly Frontal View... 9 Figure 15: Full Pressing Assembly Top View Figure 16: Full Pressing Assembly Side View Figure 17: Dynamometer and Shims Figure 18: Push-Pull Test at Five Points Sep-02 FC Page 2 of 16

3 1. General This Field Change Order details the installation of the W Pressing Assembly. 2. Reason for Change The new assembly will exert pressure on the top roller thus creating a uniform and constant pressure between and throughout both top and lower W axis rollers. Therefore, the installation of the W-Pressing Assembly will prevent substrate deformation from occurring and will improve substrate leading. 3. Estimated Installation Time Two hours. 4. Tools Required: Push-Pull Instrument. Metal saw. Circlips Pliers. Silicon Paste. Calibrating tool: Indicator, arms, and magnetic base. Metal file. Wrench and Allen keys. 5. Implementation Implement this FCO on printers up to the following serial numbers: NUR Fresco HiQ 3200 # Sep-02 FC Page 3 of 16

4 6. Installation 6.1 Before you start Before you start, perform the followings: 1. Verify that the Vacuum Plate is in cold state then use the indicator, arm and magnetic base from the calibration kit to indicate the position of the vacuum plate as follow: Position the magnetic base is on center of the X-axis beam (refer to Figure 1). Position the indicator needle on the center of the vacuum plate (vertically and horizontally). Adjust the indicator to read zero (refer to Figure 1). 2. Disconnect the vacuum hose from the vacuum metal tube on the back of the vacuum plate (refer to Figure 16). 3. To ease the assembly s installation, disassemble the tower arm from the base assembly as follow: Unscrew and remove the locking nut in the front of base assembly (refer to Figure 2 and Appendix A). Remove the M12 hex screw from the back of the base assembly then remove the washer then the spring then another washer (refer to Figure 2). Remove from both ends of pressing shaft the circlip rings (refer to Figure 9). Extract the pressing shaft into base assembly then remove washers at both ends (refer to Figure 2 and Figure 9). Dismount the tower from the base assembly and place it in safe place, you will use it in later steps. Note: Refer to Appendix A throughout this procedure in addition to the graphics included in this FCO. 2-Sep-02 FC Page 4 of 16

5 Needle on Center of Vacuum Plate Indicator to "0" Magnetic Base on X-axis Beam Figure 1: Indicator and Magnetic Base on X-axis Beam. 18mm Shaft Full Base Assembly Roller Axis From Older Assy Unit M12 Hex Screw Spring Tower Arm Circlip Washer Locking Nut Rubber Roller (From old Assy) Two Supporting Side Brackets Pressing Shaft Figure 2: New Pressing Assembly Parts. 2-Sep-02 FC Page 5 of 16

6 6.2 Removal of Existing Pressing Assembly: 1. Use a 10 mm Allen key to unscrew the two M8 screws of the bracket, on the back of the Vacuum Plate (VP), that hold the adjustable arm. Do not discard the bracket (refer to Figure 3). 2. Use the 10mm Allen key to unscrew the M8 screw holding the support arm bearing (refer to Figure 3). 3. Use a 6 mm Allen key to unscrew the M8 screws at the base of the current pressing assembly (refer to Figure 4). (Machines up to # have four screws while machine from # have only six screws). 4. Use an Allen key to unscrew the two screws of the supporting brackets (on the substrate output tray, do not discard), on each side of the pressing assembly then lift the pressing assembly out of machine's chassis and discard (refer to Figure 1). Bracket on Back of VP Support Arm M8 Screw Figure 3: Support Arm On Old Assembly. Six M8 Screws Circled Two Cap Screws On Each Side Figure 4: Pressing Assembly Base. 2-Sep-02 FC Page 6 of 16

7 Figure 5: Supporting brackets. 6.3 Mounting of New Pressing Assembly Base: Note: Insert in each screw a spring and flat washer when necessary (from kit). 1. Use a 6 mm Allen key and a 13 mm wrench (to tighten the upper hexagonal screw) to screw in the two screws that secure the two new side brackets (from kit) into the support brackets (from old assembly) but do not tighten (refer to Figure 6 and Figure 8). 2. Slide the male rod from support brackets (from old assy) into the female middle hinge of the output tray (refer to Figure 7). 3. Position the new W pressing assy base on the chassis beam in the same place of the old assy. 4. Use a 6 mm Allen key to screw in the six M8 screws (from kit) of the new pressing assembly to the chassis' beam (refer to Figure 4). 5. Use an Allen key to screw in the two cap screws (insert washers), on each side of the brackets (from kit) into both sides of the pressing assembly's base then tighten completely the screws from step 1 (refer to Figure 6). 2-Sep-02 FC Page 7 of 16

8 13mm Screw Behind Middle Hinge Middle Hinge Support Bracket Male Rod from Old Assembly Socket Screws Socket Screw Circled Side Bracket Two Cap Screws Circled Protective Plate Hole Output Tray Side Bracket From Kit Figure 6: Securing the Side Brackets into New Assembly Unit. Figure 7: Mounting New Side Brackets into Support Brackets. Use 13 mm Wrench to Tighten Circled Socket Screw Figure 8: Full Pressing Assembly Side View. 2-Sep-02 FC Page 8 of 16

9 6.4 Mounting of Tower Arm Assembly: Reassemble the Tower Arm, removed in step 6.1, back on the pressing assembly base as follows: 1. Slide the tower arm into the base assembly and mount as follows (refer to Figure 9 and Appendix A): Insert the pressing shaft (removed before) into base assembly then insert washers at both ends (refer to Figure 2 and Figure 9). Push in the pressing shaft through the holes of base assembly and tower arm, insert a washer, and then push through. Secure both ends of shaft with circlip rings (refer to Figure 9). 2. Insert into the M12 hex screw a washer then the spring then another washer (all removed before) (refer to Figure 2). 3. Place the locking nut (removed before) in front of base assembly (pressing roller side) and insert the M12 hex screw from step above into the assembly. Tighten the bolt by hand (refer to Figure 2, Figure 12, and Appendix A). 4. Use a 10 mm wrench to apply four full turns to tighten the spring so that the distance between the two washers will be 44mm (refer to Figure 11, Figure 12, and Appendix A). Bracket to VP Two M8 Screws Pressing Shaft With Circlip Base Assembly Washers Locking Nut Tower Arm Figure 9: Arm Tower Fitted into Base Assembly. Figure 10: Full Pressing Assembly Frontal View. 2-Sep-02 FC Page 9 of 16

10 44mm Apply Four Turns on M12 Bracket to VP Support Arm into Slot of Pressure Assy Figure 11: Full Pressing Assembly Top View 2-Sep-02 FC Page 10 of 16

11 Spring Contraction 44 mm Spring Side Brackets Cap Screws Circled Figure 12: Adjustable Spring. 2-Sep-02 FC Page 11 of 16

12 6.5 Mounting of the Vacuum Plate Arm Support: Use the 18mm shaft (from kit, refer to Figure 2) and the bracket (from old assembly removed in Step 1 Page 6) to secure the arm support to the new Pressing Assembly as follows: 1. Use a 10mm Allen key to screw the two M8 screws to secure the bracket (from kit) to the Vacuum Plate (refer to Figure 15 and Figure 10). 2. Insert the 18mm shaft into the hole of new pressing assembly through the support arm bearing and out of the support arm (refer to Figure 15, Figure 14, Figure 11, and Appendix A). 3. Use circlip pliers to install, at each end of the 18mm shaft (outer ends of shaft) two circlips to secure it (refer to Figure 9 and Appendix A). Bracket to Vacuum Plate M8 Screws Circled Shaft Circlip Support Arm Shaft into Bearing into Slot Figure 13: Support Arm into Base Assembly. M 8 Screws Figure 14: Installing the Adjustable Arm. Shaft Attachment Bracket To Vacuum Plate Side Adjustable Arm Circlip To Base Assembly Figure 15: Vacuum Plate Support Arm. 2-Sep-02 FC Page 12 of 16

13 6.6 Resizing and Re-installing the Elbow Vacuum Metal Tube: You must reduce the length of the vacuum tube as follows: 1. Use a metal saw to saw off the vacuum metal tube to reduce it to 60 mm from the T- intersection (refer to Figure 16). 2. Use the metal file to smoothen the tube. 3. Apply silicon paste on the elbow tube (from kit). 4. Insert the vacuum elbow tube (from kit) into the vacuum metal tube (refer to Figure 16). 5. Reconnect the vacuum hose from metal tube (refer to Figure 16). 60 mm Elbow Tube (From Kit) Hose Figure 16: Vacuum Tubes and Hose. 2-Sep-02 FC Page 13 of 16

14 7. Adjusting You must perform the Push-Pull test, to ensure that the pressure between the two W-rollers is conformed to requirements, as follows. 1. Remove all Teflon tapes from the W-rollers. 2. In the Pneumatic panel, set the air pressure regulator to 3.5 bars for the W-pressing roller. 3. Use brass shim (from kit) whose dimensions are: Width = 70 mm; Length = 200 mm; Thickness = 0.06 mm. 4. Perform the test at five equidistant points in between the W-rollers; use a marker to mark the five points on the output try (refer to Figure 18). 5. Close the w-rollers and activate the W rollers forward via the Galil terminal, use the following commands: Command SHW JGW= 20,000 BGW STW MOW Description Enable driver Jog speed of axis value less than ±50,000 [counts/sec] (+/- define the direction of rotation. Begin motion of axis Stop motion of axis Disable driver 6. Let the shim be caught between the rollers and as the shim is being pulled in by the rollers, resist it statically and record the lowest and highest readings for each point in Table 2 below. Note: You must let the rollers complete four revolutions for each test point (refer to Figure 17). Warning: Be very careful not to catch your fingers between the rollers, in emergency case hit the emergency button. 7. Record the Average reading as follows: Average reading = High + Low 2 (refer to Table 1). 8. All Average values in the table should be between the Highest (Average Value) and 50% of that same value (refer to Table 1). If not, adjust the W rollers pressure regulator and/or the tension on the pressing assembly spring (refer to Figure 11 and Figure 12). 2-Sep-02 FC Page 14 of 16

15 Note: You can increase the pressure (at both ends of W-pressing roller) by adjusting the regulator and by adjusting the spring to increase pressure in the center of the W-pressing roller. Repeat steps 1 through 8, if necessary, to obtain the required readings. Caution: Applying too much pressure on the center may damage the W-pressing roller. Therefore, the spring tension, between the two washers, should not exceed 42 mm (refer to Figure 11 and Figure 12). Record Highest and Lowest Readings Figure 17: Dynamometer (Push Pull) and Shims Figure 18: Push-Pull Test at Five Points. 2-Sep-02 FC Page 15 of 16

16 Table 1: Push-Pull Sample Data. Readings Low High Average= High +Low Table 2: Push Pull Data. Readings Low High Average= High +Low 2 8. Logistics W Pressing FCO Kit PN: P/N Description Qty W Pressing Assy Push Pull Jig For W Pressing Vacuum Tube Elbow 1 FC W Pressing FCO 1 9. Appendix W Pressing Assembly W-Pressing Assembly DRW # Sep-02 FC Page 16 of 16

17 A 324REF. A REF. A B B B B C? C D D 3 A 14 SECTION A-A SCALE 1 : E E F SECTION B-B SCALE 1 : TITLE: DWG NO. NUR-FRESCO W PRESS SYSTEM W PRESS REV. SIZE. A3 DO NOT SCALE DRAWING SCALE:1:2.5 SHEET 2 OF 2 A F