CN103507236A - Injection forming mold for part with lateral inclined planes - Google Patents
Injection forming mold for part with lateral inclined planes Download PDFInfo
- Publication number
- CN103507236A CN103507236A CN201310494939.3A CN201310494939A CN103507236A CN 103507236 A CN103507236 A CN 103507236A CN 201310494939 A CN201310494939 A CN 201310494939A CN 103507236 A CN103507236 A CN 103507236A
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- CN
- China
- Prior art keywords
- slide
- slide block
- injection moulding
- inclined hole
- slide rail
- 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.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
- B29C45/332—Mountings or guides therefor; Drives therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
An injection forming mold for a part with lateral inclined planes comprises a movable mold plate and a fixed mold plate; the movable mold plate comprises a mold cavity, positioning compression blocks, slide blocks, inclined holes, slide rails, positioning grooves and fixing screws; the positioning compression blocks are fixed in the mold cavity; the slide rails are formed between the positioning compression blocks; a chute is prefabricated at the bottom of each slide rail; the slide blocks are mounted in the chutes and can slide freely in the radial direction; the inclined holes are formed in the slide blocks; an inclined guide pillar can pass through each inclined hole; the fixed mold plate comprises the inclined guide pillars with one ends fixed, and bosses. After the movable mold plate and the fixed mold plate are closed, the bosses fit with grooves in the tail ends of the slide blocks, so that the slide blocks can be compressed and positioned; meanwhile, the inclined guide pillars are inserted in the inclined holes and push the slide blocks to slide from the outside to the inside; after injection is finished, the inclined guide pillars are taken away from the inclined holes and drive the slide blocks to bounce off from the inside to the outside, and lateral core pulling can be realized. The injection forming mold can fulfill near-net-shape forming of the part with a plurality of lateral inclined planes, and is high in stability, good in synchronization, simple in structure, relatively small in size and convenient to manufacture.
Description
Technical field
The invention belongs to Powder Injection Molding Technology field, a kind of injection moulding mould with skew back surface parts is provided especially.
Background technology
Powder injection forming is that modern plastics injection molding technology and PM technique combine and a kind of Near net Shaping Technology of forming, in preparation in batches, has aspect the parts of 3 D complex shape and has unique advantage.Part to simple shape, the stripping direction during demoulding of injection moulding base is consistent with the die sinking direction of injection machine, once just can eject base substrate is complete.For the complicated shape injection moulding part with skew back face, some positions of part back-off shape still after die sinking, can not completely eject base substrate along the die sinking direction of injection machine, only has and first carries out could ejecting smoothly sample after side somatotype and side core-pulling.For example, the charging turbine in vehicle motor turbocharger, it has a plurality of curved surface buckets through particular design, and injection moulding turbine base substrate only has first to be crossed each blade pass after the side core-pulling demoulding, turbine could be ejected completely.At present, using more side core-pulling method to mainly contain oil cylinder hydraulic looses core and the motor-driven side core-pulling method of spring.Although utilize Multi-cylinder hydraulic core pulling mechanism can realize smoothly the demoulding, have the problem large, structure is more complicated, cost is higher that takes up room.The motor-driven side core-pulling mechanism of spring also can be realized the demoulding, but knockout course is steady not, and the vibration of spring easily causes the damage of thin wall vane, also can make mould structure become complicated simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of the injection moulding mould with skew back surface parts, be intended to solve a difficult problem for side somatotype and side core-pulling, improve the loose core stationarity of process of Angle Pin.
The present invention has designed a kind of injection moulding mould with skew back surface parts, utilize the principle of the inclined guide pushing tow demoulding, prefabricated chute in slide rail, slide block is installed in chute, in slide block, open inclined hole, this mould can be realized the near-net forming with skew back surface parts, have that stability is high, synchronism good, simple in structure, small volume, simple, the lower-cost advantage of making, not only be applicable to charging turbine, Screwed gear etc. with the near-net forming of skew back surface parts, also can be for the preparation of the part with side opening.
Technical scheme of the present invention is as follows: a kind of preparation method of the injection moulding mould with skew back surface parts, as shown in Figure 1, Figure 2, Figure 3 and Figure 4.Mould mainly comprises A moving platen and two parts of B solid plate.Moving platen comprises: 1 die cavity, 2 position housing pieces, 3 slide blocks, 4 inclined holes, 5 slide rails, 6 locating slots, 7 hold-down screws.Position housing piece is fixed in die cavity by hold-down screw.Between position housing piece, form slide rail, the length/width ratio of slide rail is greater than 3:1, guarantees the stability of slide block in sliding process.The prefabricated chute in bottom of slide rail, slide block is arranged in chute, and can in slide rail, radially be free to slide.In slide block, offer inclined hole, Angle Pin can navigate within the inclined hole of slide block, and the corresponding profile of coincideing with product is processed in one end of slide block, and slide block adopts the Gr15 mould steel processing with better wearability, profile is carried out polishing, and its surface roughness is Ra≤2.5 μ m.8 Angle Pins and 9 boss that solid plate is fixed on top template by one end form.In injection moulding process, after moving platen and solid plate matched moulds, the groove of boss and slide block tail end coincide, and plays the effect that slide block is compressed and located, and improves closing precision.Meanwhile, Angle Pin inserts in inclined hole, utilizes the pushing tow band movable slider ecto-entad of Angle Pin to slide, and forms the die cavity of part.After injection moulding finishes, Angle Pin detaches inclined hole, and band movable slider flicks from inside to outside, realizes undercut and side core-pulling.Eject part is complete again after side core-pulling.
Loosing core in the side that the present invention can realize multiple directions, is applicable to the near-net forming with skew back surface parts.By changing inclined hole and the angle of lead and the sliding distance that length is carried out adjusting slider.Core-pulling mechanism is assembled by positioning and locking piece and slide block, is convenient to repair change.Design longer slide rail and guarantee the Stable sliding of slide block, the destruction of avoiding thin-walled base substrate to cause due to vibration in process is loosed core in side.This mould features compact structure, have advantages of that stability is high, synchronism good, simple in structure, cost of manufacture is lower, not only can realize the near-net forming with skew back surface parts, also can make the smooth demoulding of product with transverse holes.
Accompanying drawing explanation
Fig. 1 is the structural representation of moving platen, 1 die cavity, 2 position housing pieces, 3 slide blocks, 4 inclined holes, 5 slide rails, 6 locating slots, 7 hold-down screws.
Fig. 2 is the structural representation of solid plate, 8 Angle Pins, 9 boss.
Fig. 3 is the left view of solid plate shown in Fig. 2.
Fig. 4 is the assembling schematic diagram of moving platen and solid plate.
Fig. 5 is the schematic diagram with six short blade injection moulding parts.
Fig. 6 is the schematic diagram with six linear leaf injection moulding parts.
Fig. 7 is the schematic diagram with the injection moulding part of eight blades.
The specific embodiment
Embodiment 1: the injection moulding mould of a kind of Dai Liuge side core-pulling slide block
Injection moulding mould is by moving platen and two parts of solid plate.Moving platen comprises: die cavity, 6 position housing pieces, 6 slide rails, 6 slide blocks, 6 inclined holes, 6 locating slots.Position housing piece is fixed by screws in die cavity.Between position housing piece, form slide rail, the prefabricated chute in bottom of slide rail, the length/width of slide rail is 3:1.Slide block is arranged in chute, and can in slide rail, radially be free to slide.In slide block, offer inclined hole, Angle Pin can navigate within the inclined hole of slide block, and one end of slide block is provided with the corresponding profile of coincideing with product, and slide block adopts the Gr15 mould steel processing with better wearability, profile is carried out polishing, and its surface roughness is Ra≤2.5 μ m.6 Angle Pins and 6 boss that solid plate is fixed on top template by one end form.In injection moulding process, after moving platen and solid plate matched moulds, the groove of boss and slide block tail end coincide, and plays the effect that slide block is compressed and located, and improves closing precision.Meanwhile, Angle Pin inserts in inclined hole, utilizes the pushing tow band movable slider ecto-entad of Angle Pin to slide, and forms the die cavity of part.After injection finishes, Angle Pin detaches inclined hole, and band movable slider flicks from inside to outside, realizes side core-pulling, finally obtains the injection moulding part with six blades, as shown in Figure 5.
Embodiment 2: the injection moulding mould of a kind of Dai Liuge side core-pulling slide block
Injection moulding mould is by moving platen and two parts of solid plate.Moving platen comprises: die cavity, 6 position housing pieces, 6 slide rails, 6 slide blocks, 6 inclined holes, 6 locating slots.Position housing piece is fixed by screws in die cavity.Between position housing piece, form slide rail, the prefabricated chute in bottom of slide rail, the length/width of slide rail is 4:1.Slide block is arranged in chute, and can in slide rail, radially be free to slide.In slide block, offer inclined hole, Angle Pin can navigate within the inclined hole of slide block, and one end of slide block is provided with the corresponding profile of coincideing with product, and slide block adopts the Gr15 mould steel processing with better wearability, profile is carried out polishing, and its surface roughness is Ra≤2.5 μ m.6 Angle Pins and 6 boss that solid plate is fixed on top template by one end form.In injection moulding process, after moving platen and solid plate matched moulds, the groove of boss and slide block tail end coincide, and plays the effect that slide block is compressed and located, and improves closing precision.Meanwhile, Angle Pin inserts in inclined hole, utilizes the pushing tow band movable slider ecto-entad of Angle Pin to slide, and forms the die cavity of part.After injection finishes, Angle Pin detaches inclined hole, and band movable slider flicks from inside to outside, realizes side core-pulling, finally obtains the injection moulding part with six blades, as shown in Figure 6.
Embodiment 3: the injection moulding mould of a kind of Ba Ge side core-pulling slide block
Injection moulding mould is by moving platen and two parts of solid plate.Moving platen comprises: die cavity, 8 position housing pieces, 8 slide rails, 8 slide blocks, 8 inclined holes, 8 locating slots.Position housing piece is fixed by screws in die cavity.Between position housing piece, form slide rail, the prefabricated chute in bottom of slide rail, the length/width of slide rail is 4:1.Slide block is arranged in chute, and can in slide rail, radially be free to slide.In slide block, offer inclined hole, Angle Pin can navigate within the inclined hole of slide block, and one end of slide block is provided with the corresponding profile of coincideing with product, and slide block adopts the Gr15 mould steel processing with better wearability, profile is carried out polishing, and its surface roughness is Ra≤2.5 μ m.8 Angle Pins and 8 boss that solid plate is fixed on top template by one end form.In injection moulding process, after moving platen and solid plate matched moulds, the groove of boss and slide block tail end coincide, and plays the effect that slide block is compressed and located, and improves closing precision.Meanwhile, Angle Pin inserts in inclined hole, utilizes the pushing tow band movable slider ecto-entad of Angle Pin to slide, and forms the die cavity of part.After injection finishes, Angle Pin detaches inclined hole, and band movable slider flicks from inside to outside, realizes side core-pulling, finally obtains the injection moulding part with eight blades, as shown in Figure 7.
Claims (3)
1. with an injection moulding mould for skew back surface parts, it is characterized in that:
Mould is comprised of moving platen A and two parts of solid plate B, and moving platen comprises: die cavity (1), position housing piece (2), slide block (3), inclined hole (4), slide rail (5), locating slot (6), hold-down screw (7); Position housing piece is fixed by screws in die cavity, forms slide rail between position housing piece, the prefabricated chute in bottom of slide rail, and slide block is arranged in chute, and can in slide rail, radially be free to slide; In slide block, offer inclined hole, the corresponding profile of coincideing with product is processed in one end of slide block; Angle Pin and boss that solid plate is fixed on top template by one end form; In injection moulding process, after moving platen and solid plate matched moulds, the groove of boss and slide block tail end coincide, and plays the effect that slide block is compressed and located, and improves closing precision; Meanwhile, Angle Pin inserts in the inclined hole of slide block, utilizes the pushing tow band movable slider ecto-entad of Angle Pin to slide, and forms the die cavity of required part; After injection moulding finishes, Angle Pin detaches inclined hole, and band movable slider flicks from inside to outside, realizes side core-pulling.
2. a kind of injection moulding mould with skew back surface parts according to claim 1, is characterized in that: the length/width ratio of slide rail is greater than 3:1, to guarantee the stability of slide block in sliding process.
3. a kind of injection moulding mould with skew back surface parts according to claim 1, is characterized in that: slide block adopts the Gr15 mould steel processing with better wearability, and profile is carried out polishing, and surface roughness is Ra≤2.5 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310494939.3A CN103507236B (en) | 2013-10-21 | 2013-10-21 | A kind of injection moulding mould with skew back surface parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310494939.3A CN103507236B (en) | 2013-10-21 | 2013-10-21 | A kind of injection moulding mould with skew back surface parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103507236A true CN103507236A (en) | 2014-01-15 |
| CN103507236B CN103507236B (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310494939.3A Expired - Fee Related CN103507236B (en) | 2013-10-21 | 2013-10-21 | A kind of injection moulding mould with skew back surface parts |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110216850A (en) * | 2019-07-12 | 2019-09-10 | 福建上润精密仪器有限公司 | Impeller is molded core-pulling mechanism |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120107446A1 (en) * | 2010-10-27 | 2012-05-03 | Cheng Uei Precision Industry Co., Ltd. | Plastic injection mold |
| CN102794876A (en) * | 2012-08-08 | 2012-11-28 | 慈溪市盛艺模具有限公司 | Injection mold for making helical fan |
| CN202556683U (en) * | 2011-12-28 | 2012-11-28 | 厦门市超日精密模具有限公司 | Side core-pulling structure of injection mold |
-
2013
- 2013-10-21 CN CN201310494939.3A patent/CN103507236B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120107446A1 (en) * | 2010-10-27 | 2012-05-03 | Cheng Uei Precision Industry Co., Ltd. | Plastic injection mold |
| CN202556683U (en) * | 2011-12-28 | 2012-11-28 | 厦门市超日精密模具有限公司 | Side core-pulling structure of injection mold |
| CN102794876A (en) * | 2012-08-08 | 2012-11-28 | 慈溪市盛艺模具有限公司 | Injection mold for making helical fan |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110216850A (en) * | 2019-07-12 | 2019-09-10 | 福建上润精密仪器有限公司 | Impeller is molded core-pulling mechanism |
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| Publication number | Publication date |
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| CN103507236B (en) | 2015-09-09 |
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Granted publication date: 20150909 Termination date: 20211021 |
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| CF01 | Termination of patent right due to non-payment of annual fee |