1、November 2012 Translation by DIN-Sprachendienst.English price group 11No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).I
2、CS 83.200!$:K“1922340www.din.deDDIN ISO 28238Compression and injection moulds Components for gating systems (ISO 28238:2010),English translation of DIN ISO 28238:2012-11Press- und Spritzgiewerkzeuge Bauteile fr Einspritzsysteme (ISO 28238:2010),Englische bersetzung von DIN ISO 28238:2012-11Moulage p
3、ar compression et moules dinjection Composants pour systmes dinjection (ISO 28238:2010),Traduction anglaise de DIN ISO 28238:2012-11www.beuth.deDocument comprises 15 pagesIn case of doubt, the German-language original shall be considered authoritative.10.12 A comma is used as the decimal marker. Con
4、tents Page National foreword .3 National Annex NA (informative) Bibliography 1 Scope 4 2 Normative references 4 3 Terms and definitions .5 4 Components for gating systems 6 4.1 Conventional gating 6 4.2 Hot side .7 4.2.1 Externally heated gating system 9 4.2.2 Internally heated gating system 14 4.3
5、Component for cold runner gating system 15 2 DIN ISO 28238:2012-11 3National foreword This standard has been prepared by Technical Committee ISO/TC 29 “Small tools”, Subcommittee SC 8 “Tools for pressing and moulding” (Secretariat: AFNOR, France). The responsible German body involved in its preparat
6、ion was the Normenausschuss Werkzeuge und Spannzeuge (Tools and Clamping Devices Standards Committee), Working Committee NA 121-03-03 AA Press-, Spritzgie- und Druckgiewerkzeuge. The text of ISO 28238:2010 has been adopted in this standard without any modification. The DIN Standards corresponding to
7、 the International Standards referred to in this document are as follows: ISO 1580 DIN EN ISO 1580 ISO 4762 DIN EN ISO 4762 ISO 8734 DIN EN ISO 8734 ISO 8735 DIN EN ISO 8735 ISO 10072 DIN ISO 10072 ISO 10642 DIN EN ISO 10642 ISO 10907-1 DIN ISO 10907-1 ISO 12165 DIN ISO 12165 ISO 15600 DIN ISO 15600
8、 ISO 16915 DIN ISO 16915 National Annex NA (informative) Bibliography DIN EN ISO 1580, Slotted pan head screws Product grade A DIN EN ISO 4762, Hexagon socket head cap screws DIN EN ISO 8734, Parallel pins of hardened and martensitic stainless steel (Dowel pins) DIN EN ISO 8735, Parallel pins with i
9、nternal thread, of hardened and martensitic stainless steel DIN EN ISO 10642, Hexagon socket countersunk head screws DIN ISO 10072, Tools for moulding Sprue bushes Dimensions DIN ISO 10907-1, Tools for moulding Locating rings Part 1: Locating rings for mounting without thermal insulating sheets in s
10、mall or medium moulds (types A and B) DIN ISO 12165, Tools for moulding Components of compression and injection moulds and diecasting dies Terms and symbols DIN ISO 16915, Tools for moulding Sprue pullers DIN ISO 15600, Tools for moulding Thermal insulating sheets for injection moulds 3 DIN ISO 2823
11、8:2012-11 Compression and injection moulds Components for gating systems 1 Scope This International Standard specifies the characteristics of components of gating systems used in injection moulds for the processing of thermoplastics, thermosetting plastics and elastomers. These are gating systems fo
12、r solidifying sprues for externally heated gating systems, internally heated gating systems and cold runner gating systems. The purpose of this International Standard is to establish coherent terms for the different gating systems in professional terminology. NOTE 1 The components and, in part, the
13、examples for the assembly of the various gating systems are shown in Figures 1 to 12. All figures are given as examples only and need not be considered in the design of the tools. NOTE 2 For terms and symbols related to components of compression and injection moulds and diecasting dies, see ISO 1216
14、5. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 1580, Slotted pan h
15、ead screws Product grade A ISO 4762, Hexagon socket head cap screws ISO 6751, Tools for moulding Ejector pins with cylindrical head ISO 6753-2, Tools for pressing and moulding Machined plates Part 2: Machined plates for moulds ISO 8017, Tools for moulding Guide pillars, straight and shouldered, and
16、locating guide pillars, shouldered ISO 8734, Parallel pins, of hardened and martensitic stainless steel (Dowel pins) ISO 8735, Parallel pins with internal thread, of hardened steel and martensitic stainless steel ISO 9449, Tools for moulding Centring sleeves ISO 10072, Tools for moulding Sprue bushe
17、s Dimensions ISO 10642, Hexagon socket countersunk head screws ISO 10907-1, Tools for moulding Locating rings Part 1: Locating rings for mounting without thermal insulating sheets in small or medium moulds (types A and B) ISO 12165, Tools for moulding Components of compression and injection moulds a
18、nd diecasting dies Terms and symbols 4 DIN ISO 28238:2012-11 ISO 15600, Tools for moulding Thermal insulating sheets for injection moulds ISO 16915, Tools for moulding Sprue pullers 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 12165 and the follow
19、ing apply. 3.1 gating system functional unit within an injection mould feeding the processed plastic for the parts to be produced from the inlet opening of the mould to the moulding cavity by taking into account the required system temperature 3.2 gating system for solidifying sprues geometry of the
20、 sprue channel, in which the injected plastic solidifies or crosslinks, and which is removed from the mould together with the product within the respective production cycle during or after opening of the parting level of the mould See Figures 1 and 2. 3.3 hot runner gating system hot side gating sys
21、tem functional unit within an injection mould feeding the thermoplastic resin for the parts to be produced from the inlet opening of the mould to the moulding cavity by taking into account the required system temperature NOTE The components (e.g. distributor bushing, manifold block and nozzle) formi
22、ng the sprue channel are provided with heat energy generators (cartridge heaters, bores for liquid tempering media, etc.) and appropriate control elements (thermocouples, etc.). Maintenance of the necessary processing temperature allows for distribution of the molten thermoplastic resin through the
23、sprue channel for producing sprueless parts. 3.3.1 hot side functional unit comprising all hot runner components for the gating system, which is complemented by a mould clamping plate fixed half (FH), frame plate FH, nozzle retainer plate FH, as well as guide elements and locating elements 3.3.2 ext
24、ernally heated gating system functional unit analogous to the hot runner gating system and the hot side gating system, in which the molten plastic flows through the components required to supply the supplementary heat energy 3.3.3 internally heated gating system functional unit analogous to the hot
25、runner gating system and the hot side gating system, in which the molten plastic is conducted externally past the components supplying the required supplementary heat energy 3.4 cold runner gating system functional unit within an injection mould feeding the processed non-crosslinked elastomers for t
26、he parts to be produced from the inlet opening of the mould to the moulding cavity by taking into account the required system temperature 5 DIN ISO 28238:2012-11 4 Components for gating systems 4.1 Conventional gating For numbered items, see Table 1. Figure 1 Direct or indirect injection by means of
27、 a sprue bush in an injection mould for processing of thermoplastic or elastomer For numbered item, see Table 1. Figure 2 Direct or indirect injection by means of a temperable sprue bush in an injection mould for processing of thermosetting plastic 6 DIN ISO 28238:2012-11 Table 1 Conventional gating
28、 Figure Item no. Term/componentaInternational Standard 1 1bSprue bush ISO 10072 1 2bSprue puller insert ISO 16915 1 3bEjector pin ISO 6751 1 4bDowel pin ISO 8734 1 5bLocating ring ISO 10907-1 1 6bThermal insulating sheet ISO 15600 1 7 Machine nozzle 2 8 Sprue bush, temperable a See Figures 1 and 2.
29、b Terms are in accordance with ISO 12165.4.2 Hot side For numbered items, see Table 2. Figure 3 Hot side for quadruple hot runner mould 7 DIN ISO 28238:2012-11 Table 2 Components for hot side Figure Item no. Term/component International Standard 1 Clamping plate ISO 6753-2 2 Frame plat3 Nozzle retai
30、ner plate 4 Locating ring ISO 10907-1 5 Thermal insulating sheet ISO 15600 6 Centring sleeve ISO 9449 7 Guide pillar ISO 8017 8 Head cap screw ISO 4762 9 Detent edged ring 10 Head cap screw ISO 4762 11 Hexagon socket countersunk head screw ISO 10642 12 Connection housing 13 Head cap screw ISO 4762 1
31、4 Dowel pin with internal thread ISO 8735 15 Spacer disc 16 Screw plug 17 Connecting nipple 18 Sealing ring 19 Cross-shaped manifold block 20 Reflector plate 21 Pipe plug 22 Deflecting insert 23 Nozzle 24 Distributor bushing 25 Thermocouple 3 26 Head cap screw ISO 4762 8 DIN ISO 28238:2012-11 4.2.1
32、Externally heated gating system 4.2.1.1 General aFor the different types of distributor bushings, see 4.2.1.2. bFor the different shapes of manifold blocks, see 4.2.1.3. cFor nozzles for externally heated hot runner gating systems, see 4.2.1.5. Figure 4 Schematic arrangement of a hot runner gating s
33、ystem 4.2.1.2 Distributor bushings, types 4.2.1.2.1 Unheated a) Distributor bushing Type A b) Distributor bushing for immersion nozzle Type B c) Distributor bushing with filter cartridge Type C d) Distributor bushing for immersion nozzle with cartridge Type DFigure 5 Unheated distributor bushings 9
34、DIN ISO 28238:2012-11 4.2.1.2.2 Heated a) Distributor bushing Type E b) Distributor bushing for immersion nozzle Type F c) Distributor bushing with filter cartridge Type G d) Distributor bushing for immersion nozzle with cartridge Type HFigure 6 Heated distributor bushings 4.2.1.3 Manifold blocks, s
35、hapes a) Form I Straight manifold block b) Form H H-shaped manifold block c) Form X Cross-shaped manifold block d) Form S Star-shaped manifold block e) Form T T-shaped manifold block Figure 7 Manifold blocks shapes (continued) 10 DIN ISO 28238:2012-11 f) Form XU Cross-shaped manifold block with seco
36、ndary runner g) Form SU Manifold block Special form with secondary runner Figure 7 Manifold blocks shapes 4.2.1.4 Manifold block and accessories For numbered items, see Table 3. Figure 8 Manifold block and accessories for externally heated hot runner gating system 11 DIN ISO 28238:2012-11 Table 3 Co
37、mponents for externally heated hot runner gating system Figure Item no. Term/component International Standard 7 a) Form I Straight manifold block 7 b) Form H H-shaped manifold block 7 c) Form X Cross-shaped manifold block 7 d) Form S Star-shaped manifold block 7 e) Form T T-shaped manifold block 7 f
38、) Form XU Cross-shaped manifold block with secondary runner 7 g) 1 Form SU Manifold block, special form with secondary runner 2 Reflector plate ISO 15600 3 Distance disc 4 Distance disc 5 Thermocouple 6 Turn plug 7 Sealing disc 8 Hexagon head screw 9 Countersunk socket head screw ISO 10642 10 Slotte
39、d pan head screw ISO 1580 11 Filter cartridge 12 Filter cartridge 13 Extension cable 8 14 Dowel pin ISO 8734 12 DIN ISO 28238:2012-11 4.2.1.5 Nozzles for externally heated hot runner gating systems 4.2.1.5.1 Thermal seals a) Open nozzle b) Pointed open nozzle c) Open nozzle with straight opening d)
40、Nozzle for lateral injection e) Nozzle for lateral injection with cold slug f) Nozzle for lateral injection without cold slug g) Pointed open multiple nozzle for axial injection Figure 9 Thermal seals 13 DIN ISO 28238:2012-11 4.2.1.5.2 Mechanical seal Figure 10 Nozzle with needle seal 4.2.2 Internal
41、ly heated gating system For numbered items, see Table 4. Figure 11 Internally heated hot runner gating system Table 4 Terms for internally heated gating system Figure Item no. Term/component International Standard 30 Cartridge heater 31 Torpedo 32 Spreader tube 33 Seal cap 34 Distributor bushing 11
42、35 Manifold block 14 DIN ISO 28238:2012-11 4.3 Component for cold runner gating system For numbered items, see Table 5. Figure 12 Arrangement of a cold runner gating system Table 5 Terms for cold runner gating system Figure Item no. Term/component International Standard 40 Distributor bushing 41 Manifold block 42 Insulating ring 43 Nozzle 44 Quick-action clamping for cavity plate 45 Dowel pin ISO 8735 46 Sealing cylinder 12 47 Sealing needle 15 DIN ISO 28238:2012-11
