PRODUCT OVERVIEW ② INSERT BLOCKS WITH SLIT VENT
INSERT BLOCKS WITH SLIT VENT –SLIT WIDTH 12μm TYPE/30μm TYPE–
Red character display
■ Overview This component is used for gas release with a fine slit structure made possible by joining thin plates by diffusion bonding technology. It is installed to release gas and residual air from the slit part. ● Features • With multiple slits, it demonstrates high gas releasing performance. • Since slits are arranged on the entire contact surface with the product surface, it can also handle devia- tion of the final filling position. • Since the gas passing path is linear, clogging of resin due to solidification of gas in the middle of the path is reduced.
SGWD (Slit width 12μm) SGWM (Slit width 30μm)
Fine slit structure
3
3
● Lineup according to the application
A ＋ 0.3 ＋ 0.1
＋ 0.3 ＋ 0.1
T
• SGWD: Applicable to high fluidity resin with small slit width. (Results: PPS/POM/PP/PA6G, etc.) • SGWM: It is hard to deform even in rough conditions and easy to process, so it can be applied to shaped parts. (Results: PA66–GF25/PP, etc.) e Please note that the applicability to resin varies depending on the installation location and molding conditions.
Enlarged slit
SGWD
SGWM
e There is a MISUMI mark on the side of SGWD. Pay attention to the orientation during processing so that the mark is on the lower side. e There is no MISUMI mark on the side of SGWM.
SGWD24 (Slit width 12 μm/Plate thickness 0.2mm)
SGWD24 (Slit width 30 μm/Plate thickness 0.5mm)
Machining
Processing time (minutes)
Flow rate index Unprocessed SGWD24 = 100
Processing time (minutes)
Flow rate index Unprocessed SGWM24 = 100
Enlarged slit
Enlarged slit
M Material SUS304C
None
–
100
–
107
Plate thickness (reference value)
Part Number SGWD24
Part Number
Slit width (reference value)
Order
t
B
T
Type
A
12 24 24
0.5
5.5
5
Wire cutting
SGWD SGWM
0.2
0.012
29 (After washing: 48)
Quotation
10
10
107
Delivery
1 1
10 10
10 10
• 1mm thickness cutting
0.5
0.03
2) Flange + spacer method
1) Press–fitting method
3) Cavity Insert method SGW □ (Flange processing)
Electric discharge • Processing margin 0.1mm • Coarse 10μm • Jet from the back side using a jig Electric discharge • Processing margin 0.1mm • Coarse 20μm • Jet from the back side using a jig
Example
SGW □ (Flange processing)
SGW □
Fixed mold plate
54
49
114
107
P.L.
Movable mold plate
gas release groove
5
46
21
107
Back plate
Spacer
(1) Square up four surfaces Please refer to the product overview page "For use" to make four corners. (2) Processing of upper and lower slit surfaces (as needed) To adjust the shape to match the product part, perform wire cutting or electric discharge on slit surfaces. (3) Assembling into cavity core The following methods are mainly used as examples of the assembly methods. Please select according to the application and space. 1) Press–fitting method Make an assembly hole in the mold, press the insert block with slit vent by a copper plate, etc., and hit it with a hammer to press–fit it. 2) Flange + spacer method Flange processing of the insert block with slit vent with reference to Fig. 1, and press it with a spacer from below to fix it. → When specifying alteration FC, flange processing will be performed with the specified dimensions. 3) Cavity Insert method Assemble the flanged insert block with slit vent to the separately–prepared cavity insert referring to Fig. 1, and fix the cavity insert to the mold by tapping, flange shape, press fitting, etc. For cavity insert, refer to the Cavity insert installation reference example in "How to mount" on the product overview page d P.439 . Fig. 1 Top side of slit
■ How to Mount ● Unit installation If you want to save space, install the insert block with slit vent unit by press–fitting method or processed flange + spacer method.
→ Also see "Example" on product page P.440 . ● Cavity insert installation reference example
If convenience of maintenance, etc. is important, create a cavity insert as shown in Fig. 1 and assemble the insert block with slit vent As shown in Fig. 2, if multiple parts are connected and assembled, it can be applied to large molded products and a higher gas release effect can be obtained.
Fig. 1
Fig. 2
0 － 0.01
32.00
Part Number – (KD/FC/TK) SGWD12 – KD SGWD24 – KD – FC – AC21 – HC22.4 – TC2.0 – TK
Quotation
Alterations
3－ φ 4.2
4 － R 3.0
14.0 19.0
Alterations
Code
Spec.
Alterations
Code
Spec.
Height determination Processing upper and lower slit surfaces, and determination of dimension T. T + 0.3 + 0.1 c T ± 0.01 E Must be used with KD Flange processing Flange processing for dimensions A and B. E Must be used with KD 1 ≦ HC–AC ≦ 4 Designation method FC–AC21–HC22.4–TC2.0 Range of designation
Side squaring Squaring on four surfaces excluding the upper and lower slit surfaces, and determination of dimensions A and B. A + 0.3 + 0.1 c A 0 –0.01 B + 0.2 + 0.1 c B 0 –0.01
＋ 0.05 0 ＋ 0.01 0
23.40 20.00
TK
Precision Standard
0 － 0.01
AC
■ For use
M5 Tap
KD
Standard values
Items
● Precautions for Processing • The four sides ⒶⒷ shown in Fig. 3 can be polished.
0 － 0.01
32.00
30.00
± 0.01
FC
A
0 － 0.01
A T
b
b ≦ 0.005
Squareness
E Please be careful because if abrasive residue enters the slit surface during polishing, it may cause blockage. • Wire cutting and electric discharge are the only available processing for the upper and lower surfaces of the slit. ● About squaring • Since right angles are not provided on the product sides (Fig. 3 ⒶⒷ sides), perform squaring by grinding. • Alteration KD is also available. ● Maintenance Method • When the gas release effect weakens, perform ultrasonic washing with an organic solvent, etc. • A vacuum generator (M–VCL/M–VCLH → P.451 ) can be used in combination for a gas release assist effect.
Fig. 3
Slit surface
A
AC
HC
TC
0 － 0.2
12 24
8–10
10–12 1–2.5 22–24 2–5
HC
20–22
T
c ≦ 0.01
Parallelism
Unit of designation 0.1mm increments
E It is the dimensional reference when using the flange + spacer method. For the press–fitting method, adjust with the hole tolerance.
Side Ⓐ
439
440
Side Ⓑ
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