GL541保养手册.pdf - 第28页

4. Remove the needle from the adapter. Note: Use the jig shown below to remove needles which are stuck to the syringe by dried glue. 1 4 2 3 1. Holder 2. Retainer 3. Plate 4. Nut JRG-0700 HRG-1260 JRG-0690 HRG-1271 Jig J…

3. Changing and Storing Needles

Purpose

Needles are changed to correspond to different production programs or a needle may be

replaced when a nozzle becomes clogged.

Procedure

Removal

1. Use the inching operation to inch the syringe head to the center of the machine

where it is easily accessible, then press the EMERGENCY STOP button and cut the

power to the machine.

2. Turn the cap nut clockwise as viewed from above and remove it.

3. Remove the syringe assembly from the head as described below.

(1) While pressing the head down with one hand to keep the glue-level check

sensor out of the way, use the other hand to lift the syringe fixing ring

(black) several millimeters. (Lift until the ring's lock pins detach from the

syringe tab.)

Note: The syringe fixing ring is held onto the syringe holder by a magnet.

(2) Rotate the syringe assembly leftward 90 degrees, then pull the assembly

upward to remove it from the syringe holder.

Note: While lifting the syringe assembly, use one hand to push upward on the

needle side to prevent the adaptor from dropping off.

GL541-m76E

Glue-level

check sensor

Cap nut

Syringe

fixing ring

Lock pins

Needle

Syringe holder

Adaptor

Syringe assembly

Press

head down

Chapter 3 Changeover

Version 3.6 3-3-1 GL-541E Maintenance

4. Remove the needle from the adapter.

Note: Use the jig shown below to remove needles which are stuck to the syringe by dried

glue.

1. Holder

2. Retainer

3. Plate

4. Nut

JRG-0700

HRG-1260

JRG-0690

HRG-1271

Jig

Jig Jig

Jig

GL541-m77E

Needle

Adaptor

Chapter 3 Changeover

Version 3.6 3-3-2 GL-541E Maintenance

Installation

1. Remove any hardened glue on the end of the adapter or flange surface of the

needle.

Note: The internal diameter is marked on the needle for identification, as shown in the

following figure.

2. First, mount the adaptor and needle on the syringe, then mount the syringe,

adaptor, and needle assembly on the head's syringe holder.

Note: The mounting orientations of the syringe holder and adaptor, and the adaptor and

needle, are determined by the locating pin and the notch. When setting the needle

in the adaptor and tightening the cap nut, be sure that the adaptor pin is securely

positioned in the needle's notch.

Storage of the Needles

1. Soak nozzles that have been removed in one of the solvents listed below and then

store. To reuse the needle, clean off the solvent and any residual glue using

compressed air.

Solvents: Acetone or trichlene.

“Safety Cleaner 41 g” manufactured by Loctite.

“Cleaner S-10” manufactured by Sanei Chemical Co.

Note: For details, refer to the catalogs of glue manufacturers.

Notch

Locating pin

Needle

Adaptor

Cap nut

Syringe

holder

GL541-m79E

Indicates 0.5 mm inner diameter.

GL541-m38E

Chapter 3 Changeover

Version 3.6 3-3-3 GL-541E Maintenance