GUIDE PARTING LOCK SETS
① Form bolt holes and reamer holes in the mold parallel to the PL face to a pitch accuracy within ± 0.01. Machine the holes while taking into consider- ation the clearance between the insert and the mold. (If the pitch accuracy is within ± 0.02, form the holes to the reamer pilot hole dimension.) ■ Method of installing the parting lock
■ Features
■ Precautions for use
④ Install the die in the molding machine, cut the release bar to the necessary length, form the bolt holes and reamer pilot holes, tem- porarily fix the release bar, check the sliding operation of the parting lock, and then ream the holes and press-fit the dowel pins. Make the overhang length ℓ of each release bar the same in order to equalize the timing of the release.
② Install the cam holder on the movable mold.
③ In order to eliminate the play between the cam lock and the slide lock, insert the release bar, temporarily fix the slide holder while pulling it parallel to the cam holder, ream the holes and press-fit the dowel pins. In this condition, confirm that the release bar operates smoothly, and then tighten the slide holder with the bolts.
1. Compact and easy to mount. 2. Enables accurate mold opening movement with no reaction. 3. Can also be used for low-pressure molding as it imposes little load when locking. 4. Functions regardless of the order of mold closing processes. 5. Makes the slide lock retreat if the runner stripper side closes before the parting line.
E 1. Always use more than two sets on a mold. 2. Use this parting lock set within the following load limits: PLS/PLSW … One ton or less per mold (when two sets are used) PLM … 1.8 tons or less per mold (when two sets are used) PLL … Four tons or less per mold (when two sets are used) 3. Maintain proper alignment of the right and left release points to avoid uneven contact and resultant breakage. 4. Please note that if the fixed side template is controlled by parts such as puller bolts and there is no clearance, the puller bolts will lift the plate before the cam lock is released, and the cam lock will be damaged.
B 1
C 1
B 2
C 2
2 － φ d H7
⑦
④
2 Reamer underhole
③
⑥
① ⑤
P.L.
4 － M
No. H PLS 50 PLM 68 PLL 86
The slide surface of the release bar is induction hardened to 45HRC or higher. However, the sides are 30HRC or less for drilling the mounting holes.
ℓ
②
Selection side plate Movable side plate
(Fig. 1) Mold closed
Cavity insert
Reamer pilot hole M−0.3
Precautions If you form the dowel pin hole of the parting lock set by NC machining, the following trouble will occur. 1) The positions of the cam lock and slide lock will become misaligned, making it difficult to insert the slide bar. This in turn may result in damage to the cam lock or other part. 2) A clearance will occur between the cam lock and the slide lock, resulting in defective molding. For the above reasons, carry out position adjust- ment by matching with the actual part.
a 1 a 2 C 1 C 2 B 1 B 2 M d H7
PLS 54.542.5 17 7 19 7 M 6 6 φ 5.7 PLM 70 55 21 929 9M8 8 φ 7.7 PLL 82 66 27 11 37 11 M10 10 φ 9.7
Slide bar
Cam lock
2) Clearance
1) Damage, galling
Slide lock
■ Example of PLSW operation
(Fig.4) Parting Line is released
(Fig. 2) Mold opened
(Fig. 3) Release point of the cam lock E The release point is where the release bar's end comes above the Smm ＊ cam holder's top surface. ＊ Use the S values shown in the table as reference only. Make sure to check the actual release timing given for the product.
No. S ＊ (mm) PLS Approx. 2 PLM Approx. 11 PLL Approx. 15
Release bar
Slide lock
You can watch a more understandable video on the Web about the operating principle, installation procedure, and precautions for using the parting lock set (PLS/PLM/PLL). Please scan the QR code to access or check the parting lock set (PLS/ PLM/PLL) page from the following site.
Lock bar
1) When die is closed
2) When release bar is touching slide lock
3) Position at which lock bar separates
Click here for product video
■ How to mount 1) Form bolt holes and reamer holes using NC machining, and install the cam holder parallel to the PL face. 2) Cut the cam lock to the necessary length, form the bolt holes and reamer pilot holes, tighten the cam lock with the bolts while pulling it, carry out position adjustment by matching with the actual product, form the dowel holes, and fix the cam lock. 3) Cut the release bar to the necessary length, and install it perpendicular to the mold. Make the overhang length ℓ of each release bar the same in order to equalize the release points. 4) PL in open condition
http://jp.misumi-ec.com/vona2/mold/ Or
misumi-vona
Parting Lock Sets
S e a r c h
923
924
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