CN201784126U - Injection die - Google Patents
Injection die Download PDFInfo
- Publication number
- CN201784126U CN201784126U CN2010201506874U CN201020150687U CN201784126U CN 201784126 U CN201784126 U CN 201784126U CN 2010201506874 U CN2010201506874 U CN 2010201506874U CN 201020150687 U CN201020150687 U CN 201020150687U CN 201784126 U CN201784126 U CN 201784126U
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- die
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- injection mold
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Abstract
The utility model relates to an injection die, which comprises a die carrier system, a formation system, an injection system, an ejection system, a side core pulling system, a cooling system, an exhaust system, a support system, a limit system and a die sinking control system. The injection system is provided with a main channel and branch channels extending from the main channel, the branch channels adopt return type channels and are respectively provided with a throttle valve, and the throttle valves can adjust the cross-sectional sizes of the branch channels. Therefore, the utility model can flexibly and conveniently adjust the molten glue feeding speed and volume so that the molten glue can form a stable shape in the channels, and can effectively solves the problems of material shortage during injection, poor appearance caused by burning and the like, and ejection caused by excessively large wrapping force of the product as a result of excessive local expansion.
Description
Technical field
The utility model relates to a kind of injection mold, the especially a kind of injection mold that can regulate glue speed and advance the glue amount.
Background technology
Injection mo(u)lding (Injection Molding) is meant that the material that melts that is heated is injected die cavity by high pressure, behind cooling curing, obtains the method for formed products.This method is applicable to the batch process of complex-shaped parts, is one of important processing method; Injection mold (Mold) is meant that resin material injects the device of the goods that obtain having definite shape behind the metal pattern.In production operation, in order to control the temperature of mould, the cooling hole that refrigerant (warm water or oil) is passed through, devices such as heater.Wherein, the material that has become melt enters sprue, and through runner, cast gate is injected in the die cavity.Open mould through behind the cooling stage, the liftout attachment on the make-up machine can eject knock-pin, and goods are released.
One cover injection mold, wherein by form frame system, formation system, running gate system, ejection system, the side core-pulling system, cooling system, gas extraction system, support system, caging system and die sinking control system constitute.And each system is made up of different parts respectively, and each system is interrelated in the production, closely cooperates.Because some plasthetics complex structures, the position, hole is many especially, the muscle position is many and dark, especially material is the alloy material of PA+PPE, it is very responsive to moisture content and material breakdown, therefore high to the performance requirement of mould each side, not only require moulding attractive in appearance, and require mould to have high life and high strength.
At present; running gate system often adopts multiple spot to advance glue; so that accomplish to advance simultaneously glue everywhere as far as possible; materials flow is steady; reduce the sealing difficulty; and wherein runner is generally got sprue to respectively advancing the shortest distance of glue point; can save raw material like this; but because multiple spot advances glue; can make like this that respectively to advance the glue spot speed inconsistent; cause pressing everywhere in the die cavity and to advance the glue amount inconsistent, usually can cause in injection moulding process, occurring product and lack material, bad order such as burn and cause the excessive problem that ejects of product package power because of the part satiety.
The utility model content
The purpose of this utility model is to provide a kind of injection mold, and this injection mold can be regulated flexibly and easily and respectively enter advancing glue speed and advancing the glue amount of glue point, reaches the purpose that saves material and improve product percent of pass.
Injection mold of the present utility model comprises a running gate system, wherein, each runner that this running gate system has a sprue and takes from sprue, described each runner is a Zigzag type flow passage, each runner is provided with choke valve, and described choke valve can be regulated the cross section size of runner.
The utility model injection mold also comprises a form frame system, and described form frame system is a standard die set, and described mould bases comprises and is used to hold and the fixing AB template die frame of die, wherein forms empty avoiding between AB template die frame and the die, and fills out in the empty avoiding and be provided with voussoir.
Further, form the two sides empty avoiding between described AB template die frame and the die.
The utility model injection mold also comprises a formation system, described formation system by die and assembly unit cover half mold insert and the dynamic model mold insert in die form, described die is made of several limit piece amalgamations, described mold insert is an assort formula mold insert.Described die is made of 4 limit piece amalgamations.Described mold insert bottom is provided with the backing plate that high rigidity mould steel is made, and this backing plate is connected with the water route.Described mold insert is provided with exhaust structure.Described mold insert is provided with the sled die cavity and hangs the mould screw hole.
Wherein, the head of two mold inserts that connect is respectively equipped with a slotting portion of wearing of playing the location and increasing the effect of mold insert intensity, be somebody's turn to do the slotting portion of wearing and be pit of formation on the head of a mold insert, and on the head of another mold insert, form one and the corresponding boss of this pit.
Described injection mold also comprises a side core-pulling system, described side core-pulling system is the slide block system of loosing core, this slide block system of loosing core comprises baroclinic block, take-up housing, and wherein said baroclinic block is a monoblock type, and described take-up housing bottom and rear portion are provided with the wearing plate that hard material is made.
Useful technique effect of the present utility model is: can regulate into glue speed flexibly and easily and advance the glue amount with this by choke valve is installed at each runner of running gate system, the stable shape that melten gel is formed in runner, can effectively solve the product that occurs in the injection moulding process and lack material, bad order such as burn and cause the problem that ejects of the excessive generation of product package power because of the part satiety.And the injection moulding operation is also further simplified in other improvement of the present utility model, prolongs die life, saves material, and improves the qualification rate of product.
Description of drawings
Fig. 1 is the mould general assembly drawing.
Fig. 2 is the cover half installation diagram.
Fig. 3 is the dynamic model installation diagram.
Fig. 4 is a cover half mold insert installation diagram.
Fig. 5 is a dynamic model mold insert installation diagram.
Fig. 6 a-Fig. 6 b is the side core-pulling system.
Fig. 7 a-Fig. 7 b is split type shovel machine installation diagram.
Fig. 8 is an ejection system.
Fig. 9 a is the runner schematic diagram of running gate system.
Fig. 9 b is the runner enlarged diagram of running gate system.
Figure 10 a-Figure 10 j is the mold insert schematic diagram of dynamic model and cover half part different size.
The specific embodiment
Injection mold generally is by form frame system, formation system, and running gate system, ejection system, the side core-pulling system, cooling system, gas extraction system, support system, caging system and die sinking control system constitute.And each system is made up of different parts respectively, and each system is interrelated in the production, closely cooperates.
As shown in Figure 1, the form frame system of injection mold is made up of cover half fixed head 101, stripper plate 102, A plate 103, B plate 104, dynamic model gripper shoe 105, mould pin 106, ejector retainner plate 107, thimble push pedal 108, dynamic mould fixing plate 109 and various standard component, as guide pillar 116, guide pin bushing, screw etc.; Formation system is formed (as Figure 4 and 5) by cover half mold insert and dynamic model mold insert, and the fixed half and moving half mold insert is assembled in respectively in the square that is surrounded by four limit pieces 201,202,203,204,301,302,303,304; Running gate system is made up of (as Fig. 9 a) sprue and runner; The side core-pulling system adopts monoblock type (as Fig. 7 a-7b) for the structure of loosing core (as Fig. 6 a-Fig. 6 b) with the slide block form, shovel machine and Angle Pin; Ejection system is formed (as Fig. 8) by thimble; Cooling system is hole and water nozzle 112 compositions by water; Gas extraction system is mainly ground air discharge duct (shown in Figure 10 a-10j) on mold insert; Support system is made up of 6 cylindrical support column; Caging system is made up of two cylindrical limited posts; The die sinking control system is made up of four nylon shutters 115, four contour screws 114 and four pull bars 113.Below respectively each composition system is elaborated.
(1) running gate system:
Usually runner is got sprue to respectively advancing the shortest distance of glue point, saves raw material like this, but owing to multiple spot advances glue, can make like this that respectively to advance the glue spot speed inconsistent, causes pressing everywhere in the die cavity and to advance the glue amount inconsistent.
Shown in Fig. 9 b, the technical scheme that this utility model is taked is:
1) each runner is a Zigzag type flow passage, guarantees that as far as possible each runner advances glue apart from unanimity;
2) each runner increases the choke valve structure, but choke valve up-down adjustment flow channel cross-section size, respectively enter advancing glue speed and advancing the glue amount of glue point with the adjusting that this can be flexible, can effectively solve the product that occurs in the injection moulding process and lack material, bad order such as burn and cause the problem that ejects of the excessive generation of product package power because of the part satiety.
3) multiple spot advances glue and can make in the mould pressure everywhere be in a kind of poised state of the best, prolongs mould life-span of consumable accessory especially.
(2) formation system:
Formation system has comprised dynamic model and cover half, wherein dynamic model by die and assembly unit the dynamic model mold insert in die form; And cover half by die and assembly unit the cover half mold insert in die form.
Common way: die is whole, and mold insert seldom or is not torn mold insert open, and manufacturing procedure is mainly based on discharge.1) very dark because of the discharge position, so working (machining) efficiency is extremely low.2) because have only a workpiece to process by single station, so the process-cycle is very long.3) part has a place to damage needs integral replacing, and cost is high.4) die venting is bad, can form the various appearances defective, as starved, burns etc.
To shown in Figure 5, the method that the utility model is implemented is as Fig. 2:
1) die adopts limit piece splitting mode to constitute, and its advantage is:
A. adopt four little limit piece 201,202,203,204,301,302,303,304 amalgamations, avoided the processing difficulties brought too greatly because of workpiece and precision to cannot say for sure the problem demonstrate,proved;
B. reduced processing cost: save the slow silk expense of cutting frame; Order material and economize middle one at least 1/2 expense, save at least 1/2 heat treatment expense simultaneously;
C. be more convenient for assembling the easy repair and replacement of workpiece;
D. can process simultaneously by multistation after separating, significantly shortened the process-cycle.
2) mold insert adopts the assort mode, and its advantage is:
A. be convenient to processing;
B. be convenient to exhaust;
C. consumable accessory is convenient to change;
D. processing cost is lower, and the cycle is shorter.
Wherein, the mold insert processing technology can not only guarantee product size and assembly accumulation tolerance based on grinding machine, and the working (machining) efficiency height.The mold insert bottom increases the backing plate that high rigidity mould steel is made, and the logical cooling water of this backing plate, can effectively prevent impact and the middle mold insert temperature too high phenomenon of single tiny mold insert to template.
In addition, by on mold insert, being provided with the sled die cavity and hanging the mould screw hole, so that the assembling work of mold insert.
Usually, because the mold insert head is the plane, during two mold inserts butt joints, be that the plane is bumped on the plane therefore, promptly " bump and wear " mode, though its processing is easy, dashes curved or thrust if be injection molding pressure when mold insert is long easily.And, when assembling, cause distortion easily or fracture for some elongated and thin little mold insert.Therefore, " insert and the wear " mode that " bump and the wear " mode that has mold insert now can be changed into is to prevent the mold insert distortion and to fracture.In present embodiment, specific practice is, when two mold inserts connect, form a pit on the head of one of them mold insert, and form on the head of another mold insert one with the corresponding boss of pit, so that when two mold insert assembling combination, form the location fulcrum between two mold inserts, increase the intensity of this more elongated and thin little mold insert.
(3) form frame system:
Form frame system comprises and is used to hold and the fixing AB template die frame of die.
Common way: the side all required accurately to put in place around AB template die frame was opened frame, so cost is higher, and joined the increase of mould workload.
Shown in Fig. 2,3, the method that the utility model is implemented is: A, B template die frame adopt voussoir to tighten mode, and its advantage is:
1) framed monolateral alignment precision height;
Leave the two sides empty avoiding of voussoir when 2) opening frame because of AB template die frame, empty avoiding place is filled out and is established voussoir so that die is accurately fixing.Join framed work so exempted the pincers worker die substantially, be convenient to the dismounting mould.And open smart frame cost than the four sides and hang down 1/3 at least.
(4) gas extraction system:
Existing mold generally adopts thimble fit-up gap and die joint exhaust.Yet it can't satisfy the needs of precise injection molding.Therefore, the method that the utility model is implemented is: single mold insert is provided with three grades of exhaust structures, wherein, the dark 0.005mm of the first order of present embodiment, the dark 0.2mm in the second level, the third level is drawn with groove or C angle (being chamfering) of dark 0.2mm.This structure can effectively solve product and burn and the inconsistent problem of outward appearance because of being stranded gas, and can increase the plastic cement flowability and reduce injection pressure, thereby improves injection workshop production efficiency, prolongs injection machine and die life.
(5) side core-pulling system: the utility model adopts the slide block system of loosing core.
When on the mould during lower open die, can produce the situation that product can't take out, the side core-pulling system is just for addressing this problem the mold insert structure that is adopted.
Be depicted as a specific embodiment of side core-pulling system as Fig. 6 a-6b, Fig. 7 a or 7b, it comprises baroclinic block 409, take-up housing 405, and baroclinic block 409 adopts monoblock types, saves difficulty and the risk of opening inclined hole on the A plate.Wherein, 401 and 402 is forming part, is mainly used to the shape of forming plastic cement product; 407 is guide elements, is mainly used in the guide effect that side is taken out the heart.Take-up housing 405 belows have additional the wearing plate 403,404 that hard material is made, and prolong die life with this.Take-up housing 405 rears also have additional the wearing plate 404 that hard material is made, and are convenient to change when being worn and torn by baroclinic block.
Further be provided with Angle Pin 408 on the baroclinic block 409, take-up housing 405 is played the effect of further pushing and guiding.
Outside side opening and side are recessed in this structure energy shaped article, and it is stable to loose core, and formed product is attractive in appearance.
(6) ejection system: adopt dome and cotter pilotage.
Be illustrated in figure 8 as ejection system, very many because of product muscle position, the utility model is based on cotter pilotage.
In addition, some complementary structures all adopt current the most frequently used economic way.As: support system and caging system adopt cylindrical support column and limited post; The preferable employing diameter of cooling system 8mm directly cools off limit piece and backing plate in the water route; The die sinking control system adopts nylon shutter and cylindrical Tiebar structure; Ejector retainner plate return system adopts the spring return.
The utility model adopts standard die set, and all pieces and mold insert use import die steel and the heat treatment of process high-quality.Such scheme is proved repeatedly through the senior engineer of multidigit, thinks rational in infrastructure, and easy to process, cost is minimum, and the cycle is the shortest.Each part is through import lathe Precision Machining, and each procedure is processed in strict accordance with tolerance, and moulding position tolerance and assembling place tolerance are minimum, guarantee the qualification rate of product.
Claims (10)
1. injection mold, it comprises a running gate system, it is characterized in that, each runner that this running gate system has a sprue and takes from sprue, described each runner is a Zigzag type flow passage, and each runner is provided with choke valve, and described choke valve can be regulated the cross section size of runner.
2. injection mold as claimed in claim 1 is characterized in that, also comprises a form frame system, described form frame system is a standard die set, described form frame system comprises and is used to hold and the fixing AB template die frame of die, wherein forms empty avoiding between AB template die frame and the die, and fills out in the empty avoiding and be provided with voussoir.
3. injection mold as claimed in claim 2 is characterized in that, forms the two sides empty avoiding between described AB template die frame and the die.
4. injection mold as claimed in claim 1, it is characterized in that, also comprise a formation system, described formation system by die and assembly unit cover half mold insert and the dynamic model mold insert in die form, described die is made of several limit piece amalgamations, and described mold insert is an assort formula mold insert.
5. injection mold as claimed in claim 4 is characterized in that, described die is made of 4 limit piece amalgamations.
6. injection mold as claimed in claim 4 is characterized in that, described mold insert bottom is provided with the backing plate that high rigidity mould steel is made, and this backing plate is connected with the water route.
7. injection mold as claimed in claim 4 is characterized in that described mold insert is provided with exhaust structure.
8. injection mold as claimed in claim 4 is characterized in that, described mold insert is provided with the sled die cavity and hangs the mould screw hole.
9. injection mold as claimed in claim 4, it is characterized in that, the head of two mold inserts that connect is respectively equipped with a slotting portion of wearing of playing the location and increasing the effect of mold insert intensity, be somebody's turn to do the slotting portion of wearing and be pit of formation on the head of a mold insert, and on the head of another mold insert, form one and the corresponding boss of this pit.
10. injection mold as claimed in claim 1, it is characterized in that, described injection mold also comprises a side core-pulling system, described side core-pulling system is the slide block system of loosing core, this slide block system of loosing core comprises baroclinic block, take-up housing, wherein said baroclinic block is a monoblock type, and described take-up housing bottom and rear portion are provided with the wearing plate that hard material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201506874U CN201784126U (en) | 2010-04-06 | 2010-04-06 | Injection die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201506874U CN201784126U (en) | 2010-04-06 | 2010-04-06 | Injection die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201784126U true CN201784126U (en) | 2011-04-06 |
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ID=43816103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201506874U Expired - Fee Related CN201784126U (en) | 2010-04-06 | 2010-04-06 | Injection die |
Country Status (1)
| Country | Link |
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| CN (1) | CN201784126U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103112106A (en) * | 2013-03-08 | 2013-05-22 | 昆山市浩坤机械有限公司 | Die |
| CN103906617A (en) * | 2011-10-28 | 2014-07-02 | 提克纳有限责任公司 | System and process for molding polymeric articles while reducing gate blush |
| CN107322887A (en) * | 2017-08-21 | 2017-11-07 | 科成精密模塑科技无锡有限公司 | A kind of inner core pulling structure of injection mold |
| CN107813463A (en) * | 2017-10-12 | 2018-03-20 | 东莞市联洲知识产权运营管理有限公司 | It is a kind of that there is the injection mold into glue amount manual regulating device |
| CN108312439A (en) * | 2018-03-26 | 2018-07-24 | 上海甬兴塑胶有限公司 | Frame mould above a kind of washing machine |
| CN117225920A (en) * | 2023-11-16 | 2023-12-15 | 靖江三鹏模具科技股份有限公司 | Double-layer end face extrusion insert die for metal processing |
-
2010
- 2010-04-06 CN CN2010201506874U patent/CN201784126U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103906617A (en) * | 2011-10-28 | 2014-07-02 | 提克纳有限责任公司 | System and process for molding polymeric articles while reducing gate blush |
| CN103112106A (en) * | 2013-03-08 | 2013-05-22 | 昆山市浩坤机械有限公司 | Die |
| CN107322887A (en) * | 2017-08-21 | 2017-11-07 | 科成精密模塑科技无锡有限公司 | A kind of inner core pulling structure of injection mold |
| CN107813463A (en) * | 2017-10-12 | 2018-03-20 | 东莞市联洲知识产权运营管理有限公司 | It is a kind of that there is the injection mold into glue amount manual regulating device |
| CN108312439A (en) * | 2018-03-26 | 2018-07-24 | 上海甬兴塑胶有限公司 | Frame mould above a kind of washing machine |
| CN117225920A (en) * | 2023-11-16 | 2023-12-15 | 靖江三鹏模具科技股份有限公司 | Double-layer end face extrusion insert die for metal processing |
| CN117225920B (en) * | 2023-11-16 | 2024-02-27 | 靖江三鹏模具科技股份有限公司 | Double-layer end face extrusion insert die for metal processing |
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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: 20110406 Termination date: 20140406 |