PRODUCT OVERVIEW ③ DATE MARKED PINS –PLATE–SIDE EXCHANGE TYPE–
■ Overview ● Features • The year, month and day indication of inside arrow can be changed from the PL side.
● Shape of Marks and Character Font
Shape of marks
Date Marked Pin Sets Reverse character (Concave character)
Finished products Normal character ( Convex embossed character )
Depth of mark (mm)
• The inside arrow and 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.
D
Arrow Standard Shallow
Characters
■ Standard arrow depth
3 4 5 6 8
0.12 0.14 0.16 0.18 0.20 0.22
0.22 0.25 0.30 0.40 0.40 0.50
–
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.
0.14 0.16 0.18 0.20 0.22
• Character font
● Structure
10–20
Plate–side exchange type
Component name
M Material H Hardness
PL side
Drafts for pulling (Angle/one side) Characters Arrow
❶ Inside arrow Outside ring ❸ Steel ball ❷
■ Shallow arrow depth
D
SUS420 50–53HRC
3 4 5 6 8
30° 23° 24° 24° 24° 25°
SUS440C 58HRC–
❹ Spring
SUS304
–
13°
The depth of the characters and the arrow mark is the same.
1
Positioning groove
Positioning groove
10–20
Steel ball
2
Steel ball 1
Steel ball 2
E For the character font of D4/5/6 outside rings of plate side exchange type, the numbers 1–9 are in the plate–side exchange type font and the numbers 10–12 are in the PL exchange type font ( D P.510 ).
D4–20
D3
3
E Two moved steel balls and six grooves are used because D3 is divided equally among twelve.
■ About mounting/unmounting
● How to mount outside ring
Inside arrow
4
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.
● 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.
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.
Outside ring
● Hole diameter for maintenance
Plate–side exchange type プレート側交換タイプ
＊ a Plate–side exchange type
● 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.
L面交換タイプ
φ D H7
φ D H7
D
3 4 5 6 8
1.6 or less 2.2 or less 2.8 or less 3.0 or less 4.6 or less 5.0 or less 10.5 or less 12.5 or less
● How to use the inside arrow You can easily attach/detach the inside arrow by manually pushing it as shown in the figure on the right. (To detach a small diameter type, lightly push it using a screw driver.)
10 16 20
＊ a
＊ a
511
512
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