PRODUCT GUIDE EJECTOR LEADER PINS AND BUSHINGS/SUPPORT PILLARS
ALTERATIONS GUIDE SUPPORT PILLARS
■ Example For Ejector Leader Pins And Bushings
■ Applicable alterations by product
● Inlay Method This method requires high precision machining of the ejector pin's bushing hole and the back up plate's inlay hole to have them aligned accurately.
Alteration
Code
Spec.
SPL SPLG DSPL DSF SPLF HSP HSPL
Total length alteration LC = 1mm increments
(1) Pin: Normal shape (with tap)
(2) Pin: Normal shape (with C ring) Bushing: All types of normal shape
(3) Pin: Bolt shape
(4) Pin: Bolt shape
D E LC 12 20 ≦ LC ＜ 100 14 20 ≦ LC ＜ 120
D
E LC
(Through hole type) Bushing: All types of normal shape
(Bolt fixing type) Bushing: All types of normal shape
35
40 ＜ LC ＜ 300 40 45 40 ＜ LC ＜ 200 50 40 ＜ LC ＜ 400 55 40 ＜ LC ＜ 200 60 60 ＜ LC ＜ 400 80 100 60 ＜ LC ＜ 200 120
Bushing: Ball retainer type
16 18 20 25 30 32
20 ≦ LC ＜ 150 40 ＜ LC ＜ 300
○ ○ ○
LC
LC
L
EGHA
EGPDHE EGPDHF
EGH
EGHR
P.873
P.875
P.878
E When LKC is used, alteration in 0.01mm increment is possible. E May penetrate the prepared tapped hole. E Surface treatment of the cut surface may be removed.
P.879
EMBS
P.887
Full length tolerance alteration
E Available when LCmin–L350
40 ≦ L ≦ 200 c L + 0.3 200 ＜ L ≦ 350 c L + 0.5
+ 0.02 0
+ 0.2 c + 0.2 c
+ 0.03 0 E When combining with LC, it is possible to specify L dimension in 0.01mm increments. E Surface treatment may be removed from both ends. E Full length can be designated for SPLF with LKC only.
○ ○
○
LKC
L
● Striking method Use of a long pin helps prevent deflection at the time of striking. Can also serve as a support pillar, requiring less space .
■ SPL
D Tap M selection 12 5
D Tap M selection 35 10/12
M
14 16 18 20 25 30 32
40 45 50 55
Changes the tap size. E ℓ = M × 2
(5) Pin: Normal shape
(6) Pin: Stepped shape
(7) Pin: Stepped shape
8/10
○
(with a tap and dowel hole)
(One end stepped type) Bushing: All types of normal shape
(Both ends stepped type) Bushing: All types of normal shape
ℓ
16
60 80 100 120
Bushing: Linear type
10/12
L
20
MC
■ SPLG
Tap processing. E Available when 50 ≦ L E ℓ = M × 2 E May penetrate the prepared tapped hole.
EGHC P.874
EGPP
M
EGPD P.876 EGPDX P.879
D
Tap M selection
20 25 30 35 40 50
8/10
P.876
EGBL EGBLT EGBLS P.883
○
Snap ring
10/12
ℓ
L
After cutting D dimension as shown in the figure, surface treatment (black oxide) is performed. KF=1mm increments E M 2 + 1 ≦ KF ≦ D 2 –1 After cutting D dimension as shown in the figure, surface treatment (black oxide) is performed. WKF = 1mm increments E M 2 + 1 ≦ WKF ≦ D 2 –1 Full length tolerance alteration L ≦ 200 c L + 0.3 + 0.2 c L + 0.02 0 L ＞ 200 c L + 0.5 + 0.2 c L + 0.03 0 L dimension designation in 0.01mm increments possible Full length tolerance alteration L ≦ 200 c L + 0.3 + 0.2 c L 0 –0.02 L ＞ 200 c L + 0.5 + 0.2 c L 0 –0.03 L dimension designation in 0.01mm increments possible
Spacer
○ ○
KF
x Combination with WKF not available
■ Examples of using support pillars
○ ○
WKF
SPLG
SPL
x Combination with KF not available
Easy installation and removal by fixing the support pillars with dowel pins.
SPLG
When using by screwing a screw plug (MSWC) into the support pillar
SPL
E When DSPL is combined with LC, it is possible to specify LC in 0.01mm increments
○ ○
LK1
Insert it into the opened tap hole for rough positioning in the plate (back plate) as shown in the figure, and tighten the mounting plate.
E When DSPL is combined with LC, it is possible to specify LC in 0.01mm increments
L
SPLF
○ ○
LK2
Core
When fixing the bolt from the mounting plate
When assembling the mold, the stepped part of the support pillar presses the upper side of the ejector plate and keeps it parallel, making it easier to insert the ejector pin. (Installation can be done smoothly without press- ing the plate by hand or hanging the return pin from above.)
SPL
Movable mold plate
Changes to through hole type (no counterbore type). E The through hole diameter is d.
Return pin
○
HN
Back plate
Changes T dimension tolerance. T dimension designation in 0.01mm increments possible T 0 –0.1 c T 0 –0.05
○
Stepped support pillar SPLF
TKC
T
Ejector plate Top side
No L dimension polishing ± 0.003 c L + 0.3 + 0.1
Ejector pin
○ ○
NLK
L
871
872
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