CN202241807U - Quick heat-circulating injection molding mold with telescopic sprue bush - Google Patents
Quick heat-circulating injection molding mold with telescopic sprue bush Download PDFInfo
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- CN202241807U CN202241807U CN2011202088339U CN201120208833U CN202241807U CN 202241807 U CN202241807 U CN 202241807U CN 2011202088339 U CN2011202088339 U CN 2011202088339U CN 201120208833 U CN201120208833 U CN 201120208833U CN 202241807 U CN202241807 U CN 202241807U
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- sprue bush
- heating plate
- cover half
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Abstract
The utility model discloses a quick heat-circulating injection molding mold with a telescopic sprue bush. The mold comprises a fixed mold part and a moveable mold part, wherein the fixed mold part comprises the telescopic sprue bush, an upper heating plate and a fixed mold component; and the moveable mold part comprises a lower heating plate and a moveable mold component. A core and a cavity of a mold can be more uniformly heated and cooled, and then a plastic injection molding product with a highly qualified appearance is obtained.
Description
Technical field
The utility model relates to a kind of injection mold of plastic injection mould rapid thermal cycles, belongs to the mould for plastics technical field.
Background technology
In traditional injection mo(u)lding, plastic melt is with after die surface contacts, and mold temperature generally can be reduced to below 90 ℃, and begins to cool down from bath surface and to solidify.When the plastic melt of different directions meets, can form weld mark at product surface.The rapid thermal cycles injection molding process adopts the technology that becomes the mould temperature, can address the above problem, and obtains high accuracy, does not have the product that melts trace.Research shows that in injection phase, if can keep mold temperature more than 100 ℃, especially, when mold temperature reached more than 150 ℃, the part strength that injection mo(u)lding is produced was high; This is because mould is heated when injection moulding, makes the flowability of raw material in die cavity improve, and the stress of having avoided the cooling back to be easy to generate because of internal density is inhomogeneous is concentrated.In addition, because the superficial density of part is also very even, this makes surface quality of workpieces very good.But the rapidity of the heating and cooling of mould and uniformity are the key issues that this technology popularization of restriction is used.
To the problems referred to above, the researcher has researched and developed numerous mould Fast Heating modes, as: Steam Heating, electrical heating, electromagnetic induction heating, Infrared Heating, heat conduction heating etc., the version and the method for realization are various.But still there are problems such as the bad and thermal efficiency of heating uniformity is lower.
Summary of the invention
The purpose of the utility model provide a kind of simple in structure, heating and cooling rapidly, evenly, save the energy, and safe and reliable rapid thermal circulation injection mould.
The utility model will solve is the heating that exists of existing injection mold and inhomogeneous cooling is even, the thermal efficiency is low, and the product of being produced has the problem of molten trace etc.
For realizing the purpose of the utility model; The described rapid thermal cycles mold for injection molding of the utility model with scalable sprue bush; Comprise cover half part and dynamic model part, described cover half partly comprises scalable sprue bush, goes up heating plate and cover half assembly, and dynamic model partly comprises heating plate and dynamic model assembly down; Described scalable sprue bush comprises sprue bush and submarine gate cover, the top that is placed in sprue bush suitable for reading of submarine gate cover.
The beneficial effect of the utility model is: the rapid thermal cycles Shooting Technique and the mould that have scalable sprue bush of the utility model; Owing to designed scalable sprue bush and flexible member; Can realize: in the heating period; Last heating plate and A plate (core) to be heated and following heating plate and B plate (die cavity) heat conduction contact area to be heated are big, and heating rapidly and uniformity of temperature profile; At cooling stage, last heating plate and A plate (core) and following heating plate and B plate (die cavity) separate, and reach the rapid and few effect of energy loss of cooling.The product quality that the utility model is produced is high, and cost is low.
Description of drawings
Fig. 1 is the three-dimensional dimension sketch map of the utility model.
Fig. 2 is the A-A generalized section of Fig. 1.
Fig. 3 is the B-B generalized section of Fig. 1.
Fig. 4 is the structural representation after a bit of distance of the first die sinking of Fig. 2.
Fig. 5 is the structural representation after the complete die sinking of Fig. 2.
Fig. 6 is for having the scalable sprue bush structural representation of flexible member (spring).
Fig. 7 is for having the scalable sprue bush decomposition texture sketch map of flexible member (spring).
The specific embodiment
In order more to clearly demonstrate technical problem, technical scheme and the beneficial effect that the utility model will solve,, the utility model is further elaborated below in conjunction with Figure of description and specific embodiment.
As shown in the figure; The described rapid thermal circulation injection mould with scalable sprue bush of the utility model comprises cover half part and dynamic model part; Described cover half partly comprises scalable sprue bush, goes up heating plate 4 and cover half assembly; Dynamic model partly comprises heating plate 1 and dynamic model assembly down, and described scalable sprue bush comprises sprue bush 20 and submarine gate cover 21, the top that is placed in sprue bush 20 suitable for reading of submarine gate cover 21.
Under the matched moulds state; The end face of last sprue bush 20 peaks at the submarine gate and overlaps on the inner bottom surface of 21 head cavitys; Described sprue bush 20 tops of going up are provided with cylindrical section 29; The submarine gate overlaps 21 circular cavities 30 that are provided with suitable for reading, and cylindrical section 29 of sprue bush 20 is placed in the circular cavity 30 of submarine gate cover 21 and goes up between the chamber wall of Duan Biyu submarine gates cover circular cavities 30 of sprue bush cylindrical section 29 and leave little gap on this, so that go up sprue bush cylindrical section 29 slip in submarine gate cover circular cavity 30; The distance that last sprue bush 20 slides in submarine gate cover 21 is slightly larger than the ultimate range that heating plate 4 and A plate 23 flick, and this maximum flicks distance through 3 qualifications of pull bar screw.
Described cover half assembly comprises A plate 23, die cavity 16; Cover half fixed head 22; Pull bar screw 3, locating ring 19, cover half flexible member 6, guide pillar 8, guide pin bushing 7, hold-down screw 5, hold-down screw 17, die cavity 16 are embedded in the A plate 23; Connect through hold-down screw 5, hold-down screw 17 between cover half fixed head 22, A plate 23 and the last heating plate 4, be provided with pull bar screw 3 between last heating plate 4 and the A plate 23.Locating ring 19 is located on the cover half fixed head 22.Guide pillar 8, guide pin bushing 7 are located at A plate 23 avris, and cover half flexible member 6 is located between A plate 23 and the last heating plate 4.The dynamic model assembly comprises B plate 2, core 15, supports backing plate 10, dynamic model flexible member spring 9, attachment screw 11, dynamic mould fixing plate 12, thimble fixed head 13, ejector retainner plate 14, push rod 24, sprue puller 25 and ejector retainner plate guide pillar 26; Core 15 is embedded in the B plate 2; Connect through attachment screw 11 between dynamic mould fixing plate 12, support backing plate 10 and the following heating plate 1; Dynamic model flexible member spring 9 is located at down between heating plate 1 and the B plate 2, and ejector retainner plate 12 is located on the thimble fixed head 13, and ejector retainner plate fixed head 13 is located on the dynamic mould fixing plate 12; Push rod 24 is located on the ejector retainner plate 14 with sprue puller 25, and ejector retainner plate guide pillar 26 is located at down between heating plate 4 and the ejector retainner plate 14.
Dynamic model flexible member spring 9 also can be a rubber; The cover half flexible member comprises spring, push rod rod guidance post spring 27 or rubber.
Specify the clamping system of the utility model at present:
Described scalable sprue bush, when mould closes, last sprue bush 20 tops and the submarine gate overlap 21 head cavity inner bottom surfaces and fit.For guaranteeing still reliably to contact after the repeatedly injection moulding; Described scalable sprue bush first die sinking a bit of apart from the time; Last sprue bush 20 and submarine gate cover 21 contact the cylindrical section segment distance that can effectively slide; This distance can be limited on pull bar screw 3, still keeps in touch with the chamber wall that guarantees the sprue bush 20 cylindrical section walls and the submarine gate 21, and the power of slip is driven by cover half flexible member spring 6.For guaranteeing that going up sprue bush 20 breaks away from submarine gate cover 21, is provided with spring 28 on last sprue bush 20.In addition, during die sinking for the first time, last heating plate 4 flicks power except that utilizing cover half flexible member spring 6 with A plate 23, also can adopt mechanical system to realize.
Described heating plate 4 and the last sprue bush 20 gone up, heat insulation between following heating plate 1 and push rod 24 and the sprue puller 25 etc., gap fiting mode greatly, the guide pillar 8 that is installed in down on the heating plate 1 also separates with heat-insulating material, avoids direct contact heat transfer.In addition, because heated contact surface is long-pending big, firing rate is fast.
The described injection moulding process that has the rapid thermal cycles mould of scalable sprue bush is: (see figure 3) under the matched moulds state, last heating plate 1 and following heating plate 4 carry out contact thermal conduction heating through the contact conduction to A plate 23 (core 16) and B plate 2 (die cavity 15).Be furnished with thermocouple etc. in core 15 and the die cavity 16, after being heated to design temperature, start injection and pressurize.After pressurize is intact, carry out the die sinking first time, see accompanying drawing 4.For the first time die sinking tool distance is less, equals heating plate 4 and flicks distance with A plate 23 and flick apart from sum with following heating plate 1 and B plate 2.Then, core 16 and die cavity 15 logical cooling waters are cooled off, owing to only core 16 and die cavity 15 are cooled off, cooling velocity is fast, and it is little that salband is walked heat.After the die sinking temperature that is cooled to set, stop logical cooling water, carry out the die sinking second time, see accompanying drawing 5.Push rod 24 ejects after the die sinking.At last, carry out matched moulds again, accomplish an injection cycle.
The above is merely an embodiment of the utility model; Not in order to restriction the utility model; Allly described specific embodiment is made various modifications or replenish the utility model person of ordinary skill in the field; Or be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (6)
1. rapid thermal circulation injection mould with scalable sprue bush; It is characterized in that this mould comprises cover half part and dynamic model part; Described cover half partly comprises scalable sprue bush, goes up heating plate and cover half assembly; Dynamic model partly comprises heating plate and dynamic model assembly down, and described scalable sprue bush comprises sprue bush and submarine gate cover, the top that is placed in sprue bush suitable for reading of submarine gate cover.
2. the rapid thermal circulation injection mould with scalable sprue bush as claimed in claim 1; It is characterized in that under the matched moulds state; The end face of last sprue bush peaks on the inner bottom surface of submarine gate cover head cavity; The described sprue bush top of going up is provided with cylindrical section; The submarine gate cover circular cavity that is provided with suitable for reading, the cylindrical section of sprue bush is placed in the circular cavity of submarine gate cover and goes up between the chamber wall of Duan Biyu submarine gate cover circular cavity of sprue bush cylindrical section and leave little gap this on, so that upward the sprue bush cylindrical section can slide in the submarine gate overlaps circular cavity.
3. the rapid thermal circulation injection mould with scalable sprue bush as claimed in claim 1 is characterized in that sprue bush is provided with elastomeric element, and described elastomeric element comprises spring.
4. the rapid thermal circulation injection mould with scalable sprue bush as claimed in claim 1 is characterized in that described periphery of going up heating plate and following heating plate is provided with thermal insulation layer.
5. the rapid thermal circulation injection mould with scalable sprue bush as claimed in claim 1 is characterized in that described cover half assembly comprises A plate, die cavity, the cover half fixed head; Pull bar screw, locating ring, cover half flexible member; Guide pillar, guide pin bushing and hold-down screw, die cavity are embedded in the A plate, connect through hold-down screw between cover half fixed head, A plate and the last heating plate; Be provided with the pull bar screw between last heating plate and the A plate; Locating ring is located on the cover half fixed head, and guide pillar, guide pin bushing are located at A edges of boards side, and the cover half flexible member is located between A plate and the last heating plate; The dynamic model assembly comprises B plate, core, support backing plate, dynamic model flexible member, attachment screw, dynamic mould fixing plate, thimble fixed head, ejector retainner plate, push rod, sprue puller and ejector retainner plate guide pillar; Core is embedded in the B plate; Connect through attachment screw between dynamic mould fixing plate, support backing plate and the following heating plate; The dynamic model flexible member is located at down between heating plate and the B plate, and ejector retainner plate is located on the thimble fixed head, and the ejector retainner plate fixed head is located on the dynamic mould fixing plate; Push rod and sprue puller are located on the ejector retainner plate, and the ejector retainner plate guide pillar is located at down between heating plate and the ejector retainner plate.
6. the rapid thermal circulation injection mould with scalable sprue bush as claimed in claim 5, its characteristic comprises spring or rubber at the dynamic model flexible member; The cover half flexible member comprises spring, push rod rod guidance post spring or rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202088339U CN202241807U (en) | 2011-06-21 | 2011-06-21 | Quick heat-circulating injection molding mold with telescopic sprue bush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202088339U CN202241807U (en) | 2011-06-21 | 2011-06-21 | Quick heat-circulating injection molding mold with telescopic sprue bush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202241807U true CN202241807U (en) | 2012-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202088339U Expired - Fee Related CN202241807U (en) | 2011-06-21 | 2011-06-21 | Quick heat-circulating injection molding mold with telescopic sprue bush |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202241807U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103707472A (en) * | 2013-12-06 | 2014-04-09 | 台州市黄岩炜大塑料机械有限公司 | Plastic pipe die product outward ejection mechanism |
| CN105058704A (en) * | 2015-07-24 | 2015-11-18 | 贾玉平 | Heat-insulating energy-saving type injection mold |
| CN105172047A (en) * | 2015-09-14 | 2015-12-23 | 贾玉平 | Injection mold for producing large thin-walled product |
| CN109531937A (en) * | 2019-01-09 | 2019-03-29 | 天泽精密技术（上海）有限公司 | A kind of pouring gate structure and injection mold |
| CN109605679A (en) * | 2018-12-27 | 2019-04-12 | 苏州东颖精密模具有限公司 | A kind of mold for the retainer for preventing injection molding from blocking |
| CN110861265A (en) * | 2019-11-13 | 2020-03-06 | 朱道庭 | Plastic mold capable of reducing demolding friction and used for automobile part production |
-
2011
- 2011-06-21 CN CN2011202088339U patent/CN202241807U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103707472A (en) * | 2013-12-06 | 2014-04-09 | 台州市黄岩炜大塑料机械有限公司 | Plastic pipe die product outward ejection mechanism |
| CN103707472B (en) * | 2013-12-06 | 2016-02-10 | 台州市黄岩炜大塑料机械有限公司 | Plastic pipe die product outward ejection mechanism |
| CN105058704A (en) * | 2015-07-24 | 2015-11-18 | 贾玉平 | Heat-insulating energy-saving type injection mold |
| CN105172047A (en) * | 2015-09-14 | 2015-12-23 | 贾玉平 | Injection mold for producing large thin-walled product |
| CN109605679A (en) * | 2018-12-27 | 2019-04-12 | 苏州东颖精密模具有限公司 | A kind of mold for the retainer for preventing injection molding from blocking |
| CN109531937A (en) * | 2019-01-09 | 2019-03-29 | 天泽精密技术（上海）有限公司 | A kind of pouring gate structure and injection mold |
| CN110861265A (en) * | 2019-11-13 | 2020-03-06 | 朱道庭 | Plastic mold capable of reducing demolding friction and used for automobile part production |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20120621 |