PRODUCT OVERVIEW ② DATE MARKED PINS –PL EXCHANGE TYPE–
■ Overview ● Features • The exchange of inside arrow and changing the year, month and day can be done from the PL side using a screw driver. • The outside ring is exchanged from plate side. • Facilitates quality control and lot management of molded products. • Uses a steel ball stopper mechanism for positioning (arrow position), which has a superior positioning accuracy than an O–ring and superior durability against gas and high temperatures generated during molding.
● Shape of Marks and Character Font • Shape of marks
Date Marked Pin Sets
Finished products
Reverse character (Concave character)
Normal character ( Convex embossed character )
Depth of mark (mm)
D
Arrow Standard Shallow
Characters
E For the mark depth of date marked pin sets (convex character) with concave character formed on molded products, refer to P.531 . The character font of date marked pin sets (convex character) is the same as the following.
■ Standard arrow depth
4 5 6 8
0.12 0.14 0.18 0.20 0.22
0.22 0.25 0.40 0.40 0.50
0.12 0.14 0.18 0.20 0.22
• Character font
● Structure
10–20
PL 面 PL surface
Component name
M Material H Hardness
PL exchange type
❶ Inside arrow
Steel ball 1
鋼球 Steel ball
SUS420 50–53HRC
Steel ball 2
❷
Outside ring
Drafts for pulling (Angle/one side) Characters Arrow
■ Shallow arrow depth
D
❸ Steel ball ❹ ❺ Spring
SUS440C 58HRC–
SUS304
–
4 5 6 8
23° 24° 22° 24° 25°
位置決め溝 Positioning groove
❻ Adjusting nut
Positioning groove
SUS420 50–53HRC
❼
Cap
13°
The depth of the characters and the arrow mark is the same.
10–20
Effective revolution
D
h
S
4 5 6 8
1.9 1.9 1.9 2.2 2.2 2.4 2.9 3.2
0.6
0.65
3 revolutions
■ About mounting/unmounting
0.7 0.9 1.7 1.7 1.8 1.8
D6–20
D4/5
Inside arrow
● How to mount outside ring
10 12 16 20
Make a reamer hole (H7 tolerance) on the plate, and drive into it lightly using a wood or urethane hammer. If the pilot hole is too small, the inside arrow may not rotate.
4 revolutions
E Two moved steel balls and six grooves are used because D4/D5 are divided equally among twelve.
4
1
When press–fitting the date mark into the mold, be sure to remove the inside arrow and set the inside arrow after the outside ring is press–fitted. e If the inside arrow sticks out of the outside ring, it can damage the date mark set, such as crushing the threads of the inside arrow.
3
Outside ring
h
2
5
Position of adjustable nut stop
● How to unmount outside rings Make sure to prepare a hole ( ＊ a) from the plate's back beforehand. Use a round stick, etc. to drive it out from that hole as shown in the figure on the left page. E Please note that, for date marked pin sets PL exchange type, if the driving force is too strong, the nut will become deformed and the threads of inside arrow will be crushed, resulting in failure to take out the inside arrow.
6
7
D
● How to use the inside arrow To attach the inside arrow
● Notes E Characters on the finished products will be embossed normal character (Convex). (Embossed character) E If the mold temperature exceeds 150 ℃ , use a heat–resistant type with a removal tap. X Cannot be used for die cast. For die cast, use Date Marked Pins for Die Cast ( D P.539 ). E If the date marked pins are clogged with tar, the inside arrow will not turn, so make sure to perform maintenance work periodically.
• How to insert the inside arrow
Use a screw driver for date marked pins DTPPN ( D P.534 ) or a minus screw driver to turn the inside arrow clockwise until the adjusting nut stops. Then reverse about a half rotation from the position it stopped, before use. Change the month indication by turning it counterclockwise with a screw driver for date marked pins DTPPN ( D P.534 ) or a minus screw driver. Remove the inside arrow by rotating it counterclockwise.
To change the month indication (Arrow direction) To remove the inside arrow
PL exchange type φ D H7 PL面交換タイプ ● Hole diameter for maintenance
• How to use
＊ a PL exchange type
プレート側交換タイプ
D
φ D H7
4 5 6 8
3.0– 3.5 3.0– 4.0 3.0– 5.0 3.0– 7.0 4.0– 8.0 5.0–10.0 5.0–13.0 5.0–15.5
• How to detach the inside arrow
Clockwise
Counterclockwise
10 12 16 20
● Notes on attaching the inside arrow ① Remove the antirust agent stuck on the products after delivery. ② Clean up any grime and foreign substances by using air to blow them off the screw part of outside ring. ③ Use a special screw driver or minus screw driver to carefully fasten the inside arrow so that the threads are matched. E If a thread seizure is likely to occur during the installation of inside arrow, temporarily remove the inside arrow without fastening, then install it again. If the thread seizure occurs, the inside arrow and outside ring cannot be combined.
＊ a
＊ a
509
510
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