CN1033150C - Gate unit for injection molding machine - Google Patents
Gate unit for injection molding machine Download PDFInfo
- Publication number
- CN1033150C CN1033150C CN 89106145 CN89106145A CN1033150C CN 1033150 C CN1033150 C CN 1033150C CN 89106145 CN89106145 CN 89106145 CN 89106145 A CN89106145 A CN 89106145A CN 1033150 C CN1033150 C CN 1033150C
- Authority
- CN
- China
- Prior art keywords
- cover half
- push rod
- template
- fixed head
- mentioned
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The present invention relates to a gate system for an injection mould, wherein a movable mould shaping plate 6 is arranged on a movable mould fixed plate 5; a push rod shim plate 4, a fixed mould shaping plate 3, etc. are positioned at the upper part; a gate is positioned in the inner side of an injection product. The present invention is characterized in that a first stage runner bush 7 is positioned in a fixed mould fixed plate 1 and is provided with a guide post; the guide post penetrates through and connects a supporting block 2 and the fixed mould shaping plate 3; a stop bolt 9 is arranged between the supporting block 2 and the fixed mould fixed plate 1; the fixed mould shaping plate 3 with a built-in second stage runner bush 10 is provided with a mould core 12 with a built-in third stage runner bush 11; a fixed sheet 14 on the push rod shim plate 4 and a fixed sheet 14' on the movable mould shaping plate 6 are connected by a chain 6.
Description
The present invention relates to the gate system of injection molding, owing in the inboard cast gate mode of injection mould, adopt hot runner, thereby the shaping plastic is bent and turn black phenomenon, for preventing to produce these phenomenons, The present invention be more particularly directed to the cold cast gate mode of a kind of usefulness and replace above-mentioned hot runner mode and make the productivity ratio of plastic and the gate system of the injection molding that quality all is improved.
When the plastic presentation quality was very important, the vestige of cast gate generally should not appear in appearance at the plastic of injection moulding.
Now the gate system with injection mould has following structure.As shown in Figure 3, in the bottom of cover half fixed head 31, a cover half template 34 that rest pad 32 and core 33 are housed is set, and above dynamic mould fixing plate 35, a dynamic model template 37 that die cavity 36 is installed is set, makes itself and above-mentioned cover half template 34 form the face contacting structure each other.
At this moment, adopt such hot runner mode, be the plastic 38 that makes above-mentioned shaping and do not appear the vestige of cast gate in appearance, make cast gate be positioned at the inboard of shaping plastic 38, and on the outer round surface of the sprue bush 39 that forms cast gate, a strip heater 40 that is built between cover half fixed head 31 and the cover half template 34 is set.
But that states in the use is existing when using gating apparatus, is difficult to carry out temperature control, rises because the hot runner mode can cause the temperature of entire die, causes plastic to bend and phenomenon such as contraction, thereby can produce the problem of plastic part quality disadvantage; In addition, if thereby when not noting controlling temperature and causing heater strip broken string and superheating phenomenon takes place, the shaping plastic will produce problems such as blackout.
The objective of the invention is to, eliminate the shortcoming in these prior arts, the mode of getting rid of hot runner, a kind of novel gate system is provided, the first order second level that this system's utilization can separate separately and third level cold pouring channel cover, and chain is connected on the dynamic mould fixing plate, make that shaping operation is finished after, plastic and cast gate can be taken out.
Its formation and action effect below are described with reference to the accompanying drawings.
Rest pad 2, cover half template 3 and push rod backing plate 4 are installed on the cover half fixed head 1, dynamic model template 6 is installed on the dynamic mould fixing plate 5, thereby formation injection molding, in the inboard gating apparatus of injection mould, first order cold pouring channel cover is built in the cover half fixed head 1, on the one hand, guide pillar 8 is set, it is run through wherein under the state that rest pad 2 and cover half template 3 mutually combine, with dogbolt 9 rest pad 2 is installed on the cover half fixed head 1, and the core 12 that third level sprue bush 11 will be housed is installed on the cover half template 3 of built-in second level sprue bush 10.
On the other hand, form a stator 14 being provided with on the above-mentioned push rod backing plate 4 of push rod 13, on the dynamic model template 6 of built-in top die cavity 15, form another stator 14 ', subsequently, with chain with stator 14 and 14 ' be connected with each other.
Unaccounted numbering 17 is shaping plastics among the figure, the 19th, and the push rod fixed head.
Describe the action effect of the present invention that constitutes by this way below in detail.
As shown in Figure 1, make after the cover half fixed head 1 and dynamic mould fixing plate 5 combinations of injection mould, utilization is built in first order sprue bush 7 in the cover half fixed head 1, be built in the second level sprue bush 10 in the cover half template 3 and be installed in third level sprue bush 11 in the core 12 be combined to form cast gate 18, by cast gate 18 molten resin is injected by in the die cavity that forms between core 12 and the die cavity 15, mould part 17 thereby be formed into, after above-mentioned shaping operation is finished, the dynamic mould fixing plate 5 that dynamic model template 6 is installed is descended.
The result, as shown in Figure 2, because the decline of above-mentioned dynamic mould fixing plate 5, combination with interconnective dynamic model template 6 of chain and rest pad 2, just be subjected to successively the guiding of the guide pillar 8 in cover half fixed head 1, rest pad 2, cover half template 3, dynamic model template 6 and the dynamic mould fixing plate 5, move down simultaneously with above-mentioned dynamic mould fixing plate 5.
At this moment, the dogbolt 9 that connects rest pad 2 and cover half fixed head 1, be moved certain distance in the space that in cover half fixed head 1, forms, be affiliated to then on the end jaw, thereby the cast gate 18 that embeds in the first order sprue bush 7 is spun off, the state that formation can be extracted out, and, this moment is because the continuation decline of dynamic mould fixing plate 5, the bonding state of cover half template 3 and dynamic model template 6 is also separated, by be installed in stator 14 on the dynamic model template 6 ' and push rod backing plate 4 on stator 14 between the traction action of chain 16, the distance that above-mentioned push rod backing plate 4 is descended equals the distance that dynamic model template 6 descends, thus, utilize push rod 13 the shaping plastic that is attached on the core 12 can be pushed away and takes out, as shown in Figure 2.
In addition, when in a single day the push rod fixed head 19 of push rod backing plate 4 is the state of being close to cover half template 3, just the taking-up of shaping plastic and the die opening state of formation mould have been finished, behaviour's storage just can move a certain distance the gap of the open space that forms the dogbolt 9 that is connected on the solid plate 1 of mould from one owing to rest pad 2 descends along guide pillar 8, manual allocation cast gate 18, thus finish the shaping of plastic and take out operation.
The present invention has following advantage: owing to adopt above-mentioned cold pouring channel cover, eliminated the various shortcomings because of adopting heater strip to produce; Because shorten the cool time of shaping plastic, improved production efficiency, reduced cost.
Fig. 1 adopts injection mould assembled state sectional view of the present invention;
Fig. 2 is the sectional view that adopts injection mould die opening state of the present invention;
Fig. 3 is the assembled state sectional view of existing injection mould.
The symbol description of major part is as follows among the figure:
1: the cover half fixed head; 2: rest pad;
3: the cover half template; 4: the push rod backing plate;
5: dynamic mould fixing plate; 6: the dynamic model template;
7: first order sprue bush; 8: lead;
9: dogbolt; 10: second level sprue bush;
11: third level sprue bush; 12: core;
13: push rod; 14,14 ': stator;
15: die cavity; 16: chain.
Claims (1)
1. the gating apparatus of an injection moulding metal pattern, it is characterized in that: the injection mould gating apparatus that be installed at dynamic model template (6) that moving plate (5) is gone up, push rod backing plate (4) and cover half template (3) parts is arranged in top, cast gate is positioned at the plastic inboard includes the first order sprue bush (7) that is built in above-mentioned cover half fixed head; Be located at the connection rest pad (2) between above-mentioned cover half fixed head and the cover half template; Be fixed on the cover half fixed head, run through and link the guide pillar (8) of above-mentioned rest pad, cover half template, cover half fixed head; Be installed between above-mentioned rest pad and the cover half fixed head, when above-mentioned dynamic mould fixing plate descends, make rest pad and cover half fixed head separate the dogbolt (9) of certain distance; Be built in the second level sprue bush (10) of above-mentioned cover half template; Be built in the third level sprue bush (11) of the core (12) that is installed on the cover half template; For plastic being taken out the push rod (13) that on above-mentioned push rod backing plate, is provided with in same direction with cast gate (18); When dynamic mould fixing plate descends, plastic is taken out, be connected stator (14 ') on the dynamic model template and the chain (16) between the stator (14) on the push rod backing plate for the push rod backing plate is moved by push rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89106145 CN1033150C (en) | 1989-08-05 | 1989-08-05 | Gate unit for injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89106145 CN1033150C (en) | 1989-08-05 | 1989-08-05 | Gate unit for injection molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1049310A CN1049310A (en) | 1991-02-20 |
| CN1033150C true CN1033150C (en) | 1996-10-30 |
Family
ID=4856636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89106145 Expired - Fee Related CN1033150C (en) | 1989-08-05 | 1989-08-05 | Gate unit for injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1033150C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101554769A (en) * | 2008-04-07 | 2009-10-14 | 张欢庆 | Feeding system of plastic water pipe joint mould |
| CN101961908A (en) * | 2010-11-01 | 2011-02-02 | 天津市中环三峰电子有限公司 | Carrier rod type gate for injection mold |
| CN102173032B (en) * | 2010-12-30 | 2013-01-16 | 广东邦宝益智玩具股份有限公司 | Injection mould and manufacturing method thereof |
| CN103600034B (en) * | 2013-11-25 | 2015-08-26 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of casting thin foundry goods runner system fusible pattern |
| CN111070551B (en) * | 2019-12-26 | 2021-08-10 | 皇固包装制品(深圳)有限公司 | Plastic product extrusion injection molding process |
-
1989
- 1989-08-05 CN CN 89106145 patent/CN1033150C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1049310A (en) | 1991-02-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |