CN102921921A - Floating type direct extrusion casting mold and implementing method thereof - Google Patents
Floating type direct extrusion casting mold and implementing method thereof Download PDFInfo
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- CN102921921A CN102921921A CN2012103964264A CN201210396426A CN102921921A CN 102921921 A CN102921921 A CN 102921921A CN 2012103964264 A CN2012103964264 A CN 2012103964264A CN 201210396426 A CN201210396426 A CN 201210396426A CN 102921921 A CN102921921 A CN 102921921A
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Abstract
The invention discloses a floating type direct extrusion casting mold and an implementing method thereof. A central cone of the mold is embedded in an upper mold; a movable ring is embedded in a lower mold; the movable ring is placed on a movable ring cushion block; the movable ring cushion block is placed on a lower mold base; a movable ring limiting block is fixedly connected to the lower mold base; and a cushion block connecting head is fixedly connected with the movable ring cushion block and matched with a hydraulic cylinder connector by a connector rotating shaft. The upper mold moves downwards, so that an alloy melt is full of a cavity and the alloy melt is extruded; meanwhile, the movable ring and the movable ring cushion block are extruded; the movable ring cushion block rotates under a pressure, so that the movable ring moves downwards along with the upper mold; and excessive alloy melt flows out from an overflow groove. According to the invention, the movable ring is rigidly supported by the movable ring cushion block to rotate along with the movable ring cushion block and the movable ring can stably move downwards, so that the alloy melt uniformly flows out from the overflow groove; therefore, the quality of a cast is guaranteed. The floating type direct extrusion casting mold disclosed by the invention is especially suitable for manufacturing medium and large sized non-ferrous alloy casts by using a plurality of casting methods.
Description
Technical field
The present invention relates to the Direct Squeezing Casting field, specifically refer to a kind of mould and implementation method thereof that is specially adapted to produce the floating type Direct Squeezing Casting of medium-and-large-sized non-ferrous alloy casting.
Background technology
Traditional Direct Squeezing Casting technique is to utilize patrix extrusion molten molten metal, and compressive plane is the outer surface of upper die mold, and counterdie just supports the pressure that patrix gives.
The operation principle of Direct Squeezing Casting floating mold structure is, quantitative alloy melt is imported in the die cavity, and patrix presses down the contact alloy melt, and alloy melt rises under pressure, is full of die cavity.When patrix with after the structure of floating contacts, the pressure of patrix both had been applied on the alloy melt and also had been applied on the floating structure, therefore drive floating structure descending, be equivalent to counterdie also the alloy melt apply extruding, with the pressure Transmit evenly of patrix each position to alloy melt.
Floating type mould structure is successfully applied in the middle of the production, but mostly is small-sized and simple part, utilizes the structure of floating such as Chinese patent 96239144.1, realizes the up and down simultaneously pressurization to the bearing cap foundry goods, improves the performance of product; Chinese patent 201010603440.8 utilizes floating type counterdie, and the mandrel by having the conical surface produces radially pressure to the inner ring of cylinder sleeve.These two patents all are to utilize the spring of two or more quantity that floating structure is supported, because rigidity error, the coefficient of elasticity under different temperatures of spring itself also change and the inhomogeneities of elastic anchorage force, cause the guiding accuracy of floating structure is had relatively high expectations, when foundry goods is larger, be difficult to ensure that card moves stably.Code is that the mould structure of D-T4A4DOX1BOL4R0 has adopted the form of time hydraulic cylinder that floating structure is supported for another example, but this structure demoulding is complicated, and the design of the oil circuit of lower hydraulic cylinder is complicated, is difficult to ensure also that in extrusion process the card patrix cooperates with the action of floating structure, lower hydraulic cylinder.Above mould structure all is to be based upon on the basis of quantitative pouring, and is therefore higher to the quantitative requirement of molten metal, otherwise can cause certain influence to the uniformity of product.
Summary of the invention
The object of the present invention is to provide a kind of mould structure and implementation method thereof that is fit to the floating type Direct Squeezing Casting of medium-and-large-sized foundry goods, thereby realize indirectly quantitative pouring, mainly be achieved by the following measures:
Mould mainly is comprised of patrix, moving-coil heating jacket, moving-coil, counterdie, moving-coil cushion block, die shoe, mould bases, center cone, block hydraulic cylinder, hydraulic cylinder seat, and its annexation is as follows:
Patrix and casting machine main hydraulic cylinder are fixedly linked; Center cone is nested in the patrix, and is slidingly matched with patrix; The moving-coil of outer wrap moving-coil heating jacket is nested in the counterdie, and with the counterdie axial sliding fit, moving-coil places on the moving-coil cushion block simultaneously, and is slidingly matched with the moving-coil cushion block; The moving-coil cushion block places on the die shoe, and is slidingly matched with die shoe; Be fixedly connected with the moving-coil limited block on the die shoe; The cushion block connector is fixedly connected with the moving-coil cushion block, and the piston head of hydraulic cylinder connector and block hydraulic cylinder is fixedly linked, and the cushion block connector cooperates with the hydraulic cylinder connector by the connector rotating shaft; The block hydraulic cylinder cooperates with the hydraulic cylinder seat by the hydraulic cylinder rotating shaft; The hydraulic cylinder seat is fixedly connected on the mould bases; Travel switch is fixedly connected on the hydraulic cylinder connector, and the travel switch contact A is fixedly connected on the contact shoe with contact B, and contact shoe is fixedly connected on the mould bases.
Described moving-coil, bottom even distribution annular slope A, equally distributed annular slope B matches with the moving-coil cushion block; Described annular slope is the spirality face, and its gradient is the formed Self-locking angle angle of motion that moving-coil, moving-coil cushion block form.
Described patrix bottom and moving-coil top contact portion, namely the top of rolled-up stock place cavity positions arranges overflow launder.
Described moving-coil cushion block is driven by the block hydraulic cylinder, and the stroke of hydraulic cylinder is limited by travel switch; Described moving-coil limited block limits moving-coil and floats up to limiting altitude.
After alloy melt enters into mold cavity, the pressure release of block hydraulic cylinder; Exercise alloy melt under the patrix and be full of die cavity and alloy melt enforcement extruding, push simultaneously moving-coil and moving-coil cushion block; The moving-coil cushion block rotates under pressure, makes moving-coil follow patrix descending, and unnecessary alloy melt flows out from overflow launder, until extruding finishes; After pressurize and cooling, the up foundry goods that ejects of pressure head; The block hydraulic cylinder drives moving-coil cushion block backward rotation, promotes the up playback of moving-coil.
Descending stroke during the extruding of described patrix is by the relative position of block hydraulic cylinder travel switch contact A and contact B is set, and realizes with the original state of regulating moving-coil and the range difference between the end-state of pushing after the end.
The inventive method compare with existing extrusion casting method have advantages of following outstanding:
1. the present invention is applicable to multiple pouring type, can be by hand under the state of die sinking from the die cavity upper pouring, also can be in the situation that the mould closure, utilize electromagnetic pump, vapour-pressure type or mechanical piston formula conveying system that alloy melt is sent into by material mouth 26 and press chamber 25, be pressed into die cavity (such as the mould structure of Fig. 1) by pressure head 14 again.
2. owing to patrix 1 bottom and moving-coil 3 top contact portions, namely the top of rolled-up stock arranges overflow launder, and in extrusion process, the material such as the supernatant oxide skin of alloy melt slag can flow out by the overflow launder that patrix arranges.Because unnecessary alloy melt is discharged by overflow launder, indirectly realized the accurate quantification of alloy melt simultaneously, reduced and watered fluence in the Direct Squeezing Casting to the impact of product, made product keep good uniformity.
3. moving-coil of the present invention is by moving-coil cushion block rigid support, and along with the rotation of moving-coil cushion block, moving-coil can be steadily descending, and alloy melt is flowed out from overflow launder equably, thereby guarantees quality of die casting.
4. the gradient of the screw inclined plane that cooperates with the moving-coil cushion block of moving-coil of the present invention equals the formed self-locking angle of this mechanism kinematic, so that patrix is when pressing down, the block hydraulic cylinder only need guarantee to be the pressure release state, moving-coil is namely movable under the pressure of patrix, and does not need the main hydraulic cylinder of block hydraulic cylinder and drive patrix to carry out complicated oil circuit cooperation.
5. because moving-coil has certain pattern draft, in the extrusion process, inner surface also can produce certain pressure by the alloy melt, increases squish area.The frictional force that produces between moving-coil and the alloy melt has simultaneously reached the effect of crystal grain thinning, improves casting quality.
6. can regulate quickly and easily the height that moving-coil floats by regulating cushion block hydraulic cylinder travel switch contact A9 with the position of contact B10, thus reach that the capacity of regulating mold cavity loading alloy melt and alloy melt push apart from length.
Description of drawings
Fig. 1 is a kind of floating type Direct Squeezing Casting mould schematic diagram front view;
Fig. 2 is a kind of floating type Direct Squeezing Casting mould schematic diagram top view;
Fig. 3 is the A-A schematic cross-section of Fig. 2;
Fig. 4 is moving-coil 3 structural representation top views;
Fig. 5 is the B-B cross-sectional schematic of Fig. 4;
Fig. 6 is moving-coil cushion block 5 structural representations;
Fig. 7 is the C-C cross-sectional schematic of Fig. 6.
1-patrix 2-moving-coil heating jacket 3-moving-coil 4-counterdie 5-moving-coil cushion block 6-die shoe 7-mould bases 8-center cone 9-contact A 10-contact B 11-block hydraulic cylinder 12-hydraulic cylinder seat 13-connector rotating shaft 14-pressure head 15-cushion block connector 16-hydraulic cylinder connector 17-hydraulic cylinder rotating shaft 18-moving-coil limited block 19-pin-and-hole 20-guide 21-pin 22-annular slope A 23-annular slope B 24-overflow launder 25-presses chamber 26-material mouthful 27-travel switch 28-contact shoe
The specific embodiment
The present invention is described in further detail by following embodiment and accompanying drawing thereof, but embodiments of the present invention are not limited to this.
Adopt the present invention to make aluminium alloy wheel hub.
The casting machine that the present embodiment is used is the vertical casting machine ((model LY-1600)) of 16000KN, conveying system adopts electromagnetic pump (model EMPS-LC), also can be according to actual condition choice for use vapour-pressure type conveying system or mechanical piston formula conveying system.
The floating type Direct Squeezing Casting mould that the present embodiment is used is made aluminium alloy wheel hub, floating type Direct Squeezing Casting mould as shown in Figure 1, 2 mainly by patrix 1, moving-coil heating jacket 2, moving-coil 3, counterdie 4, moving-coil cushion block 5, die shoe 6, mould bases 7, center cone 8, form, it and block hydraulic cylinder 11, hydraulic cylinder seat 12, pressure head 14, press the annexation of chamber 25 as follows:
Patrix 1 is fixedly linked with the casting machine main hydraulic cylinder; Center cone 8 is nested in the patrix 1, and is slidingly matched with patrix 1; The moving-coil 3 of outer wrap moving-coil heating jacket 2 is nested in the counterdie 4, and with counterdie 4 axial sliding fits, moving-coil 3 places on the moving-coil cushion block 5 simultaneously, and is slidingly matched with moving-coil cushion block 5; Moving-coil cushion block 5 places on the die shoe 6, and is slidingly matched with die shoe 6; Press chamber 25 to be fixedly connected with die shoe 6, pressure head 14 is slidingly matched with pressing chamber 25; Cushion block connector 15 is fixedly connected with moving-coil cushion block 5, and hydraulic cylinder connector 16 is fixedly linked with the piston head of block hydraulic cylinder 11, and cushion block connector 15 is rotatably assorted by connector rotating shaft 13 and hydraulic cylinder connector 16; Block hydraulic cylinder 11 is rotatedly connected by hydraulic cylinder rotating shaft 17 and hydraulic cylinder seat 12; Hydraulic cylinder seat 12 is fixedly connected on the mould bases 7; Travel switch 27 is fixedly connected on the hydraulic cylinder connector 16, and travel switch contact A 9 is fixedly connected on the contact shoe 28 with contact B10, and contact shoe 28 is fixedly connected on the mould bases 7.
As shown in Figure 1, patrix 1 bottom and moving-coil 3 top contact portions, namely the top of rolled-up stock place cavity positions arranges overflow launder 24.
Moving-coil 3 structures shown in Fig. 4,5, moving-coil cushion block 5 structures shown in Fig. 6,7, the annular slope A22 that moving-coil 3 bottom evens distribute, 5 equally distributed annular slope B23 match with the moving-coil cushion block; This annular slope is the spirality face, and its gradient is the formed Self-locking angle angle of motion that moving-coil 3, moving-coil cushion block 5 form.The present embodiment moving-coil 3 arranges respectively 4 sections screw inclined planes with moving-coil cushion block 5, and gradient is 11 °
As shown in Figure 3, moving-coil 3 is slidingly matched with counterdie 4, but moving-coil 3 only has axial translation with fixing counterdie 4, does not rotate, the pin 21 of the rotation of moving-coil 3 and counterdie 4 by being fixed on die shoe 6 be fixed on pin-and-hole 19(on the moving-coil 3 as shown in Figure 5) in guide 20 limit.Moving-coil limited block 18 is fixedly connected on the die shoe 6 simultaneously, limits the limiting altitude of moving-coil 3 floatings.This spacing shielding, moving-coil are floated too high and are broken away from counterdie.
As shown in Figure 2, moving-coil cushion block 5 is driven by block hydraulic cylinder 11, and the stroke of hydraulic cylinder is by travel switch 27 restrictions.Adjustment stroke switch contact A9 with the position of contact B10, can arrange the end-state after the original state of moving-coil floating and extruding finish, thus regulate that mold cavity loads that the capacity of alloy melt and alloy melt push apart from length.
The present embodiment to make aluminium alloy wheel hub as example, its technological process is:
The position of adjustment stroke switch contact A9 and contact B10 → utilize electromagnetic pump with alloy melt from material mouthfuls 26 import press chamber 25 → pressure heads 14 with alloy melt press-in die die cavity → block hydraulic cylinder 11 pressure releases → patrix exercise for 1 time alloy melt be full of die cavity and exert pressure until moving-coil 3 reach range → pressurize complete to solidifying → open mould → pressure head to eject foundry goods → block hydraulic cylinder and promote the up playback of moving-coil.
Technological process comprises the steps with process conditions operating procedure of the present invention and process conditions thereof as follows:
(1) preheated mold to 250 ℃, molten aluminium alloy is heated to 720 ℃;
(2) position of adjustment stroke switch contact A9 and contact B10;
(3) cleaning patrix 1 and counterdie 4 and moving-coil 3 surfaces, spray paint;
(4) it is descending that the casting machine main hydraulic cylinder drives patrix 1, reaches half matched moulds state;
(5) electromagnetic pump transmission aluminium alloy melt is from material mouth 26 to pressing chamber 25;
(6) pressure head 14 speed uplinks are 40mm/s, and namely filling velocity is 40mm/s, promote molten aluminium alloy and are filled to mold cavity;
(7) block hydraulic cylinder 11 pressure releases;
(8) it is descending that the casting machine main hydraulic cylinder drives patrix 1, and the alloy melt applies 1600T pressure, until complete matched moulds;
(9) keep extruding force main hydraulic cylinder release after 1 minute, casting solidification 3 minutes;
(10) the casting machine main hydraulic cylinder drives patrix 1 up die sinking;
(11) pressure head 14 is up, ejects foundry goods.
(12) block hydraulic cylinder 11 promotes moving-coil 3 up playback.
Circulation (3) to (12) step can realize continuous production.
Claims (6)
1. floating type Direct Squeezing Casting mould, it is characterized in that: this mould mainly is comprised of patrix (1), moving-coil heating jacket (2), moving-coil (3), counterdie (4), moving-coil cushion block (5), die shoe (6), mould bases (7), center cone (8), block hydraulic cylinder (11), hydraulic cylinder seat (12), and its annexation is as follows:
Patrix (1) is fixedly linked with the casting machine main hydraulic cylinder; Center cone (8) is nested in the patrix (1), and is slidingly matched with patrix (1); The moving-coil (3) of outer wrap moving-coil heating jacket (2) is nested in the counterdie (4), and with counterdie (4) axial sliding fit, moving-coil (3) places on the moving-coil cushion block (5) simultaneously, and is slidingly matched with moving-coil cushion block (5); Moving-coil cushion block (5) places on the die shoe (6), and is slidingly matched with die shoe (6); Be fixedly connected with moving-coil limited block (18) on the die shoe (6); Cushion block connector (15) is fixedly connected with moving-coil cushion block (5), and hydraulic cylinder connector (16) is fixedly linked with the piston head of block hydraulic cylinder (11), and cushion block connector (15) cooperates with hydraulic cylinder connector (16) by connector rotating shaft (13); Block hydraulic cylinder (11) cooperates with hydraulic cylinder seat (12) by hydraulic cylinder rotating shaft (17); Hydraulic cylinder seat (12) is fixedly connected on the mould bases (7); Travel switch (27) is fixedly connected on the hydraulic cylinder connector (16), and travel switch contact A (9) is with contact B(10) be fixedly connected on the contact shoe (28), contact shoe (28) is fixedly connected on the mould bases (7).
2. a kind of floating type Direct Squeezing Casting mould according to claim 1 is characterized in that: described moving-coil (3), bottom even distribution annular slope A(22), with the equally distributed annular slope B(23 of moving-coil cushion block) match; Described annular slope is the spirality face, and its gradient is the formed Self-locking angle angle of motion that moving-coil (3), moving-coil cushion block (5) form.
3. a kind of floating type Direct Squeezing Casting mould according to claim 1, it is characterized in that: patrix (1) bottom and moving-coil (3) top contact portion, namely the top of rolled-up stock place cavity positions arranges overflow launder (24).
4. a kind of floating type Direct Squeezing Casting mould according to claim 1 is characterized in that: described moving-coil cushion block (5) is driven by block hydraulic cylinder (11), and the stroke of hydraulic cylinder is limited by travel switch (27); Described moving-coil limited block (18) limits moving-coil (3) and floats up to limiting altitude.
5. the implementation method of a floating type Direct Squeezing Casting mould is characterized in that: after alloy melt enters into mold cavity, and block hydraulic cylinder (11) pressure release; The lower alloy melt of exercising of patrix (1) is full of die cavity and alloy melt enforcement extruding, pushes simultaneously moving-coil (3) and moving-coil cushion block (5); Moving-coil cushion block (5) rotates under pressure, makes moving-coil (3) follow patrix (1) descending, and unnecessary alloy melt flows out from overflow launder (24), until extruding finishes; After pressurize and cooling, the up foundry goods that ejects of pressure head (14); Block hydraulic cylinder (11) drives moving-coil cushion block (5) backward rotation, promotes the up playback of moving-coil (3).
6. the implementation method of a kind of floating type Direct Squeezing Casting mould according to claim 5, it is characterized in that: described patrix (1) descending stroke of when extruding, by block hydraulic cylinder travel switch contact A (9) and contact B(10 are set) relative position, realize with the range difference between the end-state after the original state of regulating moving-coil (3) and the extruding end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210396426.4A CN102921921B (en) | 2012-10-17 | 2012-10-17 | Floating type direct extrusion casting mold and implementing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210396426.4A CN102921921B (en) | 2012-10-17 | 2012-10-17 | Floating type direct extrusion casting mold and implementing method thereof |
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| CN102921921A true CN102921921A (en) | 2013-02-13 |
| CN102921921B CN102921921B (en) | 2014-12-03 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106180642B (en) * | 2016-07-22 | 2018-03-09 | 太原理工大学 | One kind has shear extrusion function die casting |
| CN109877291A (en) * | 2019-01-29 | 2019-06-14 | 东莞捷荣技术股份有限公司 | Seven line aluminium alloy smallclothes of one kind and its die casting |
| CN112008060A (en) * | 2019-05-29 | 2020-12-01 | 强莉莉 | Piston liquid die forging forming device and forming method |
| CN114951600A (en) * | 2022-06-08 | 2022-08-30 | 刘磊 | Aluminum-magnesium alloy transmission multi-directional extrusion casting die and casting method |
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| CN202028757U (en) * | 2011-04-08 | 2011-11-09 | 台州宝达机电有限公司 | Die casting mould of rotor |
| CN102717049A (en) * | 2012-06-13 | 2012-10-10 | 华南理工大学 | Method and device for realizing direct extrusion casting by utilizing closed mould pouring |
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Patent Citations (6)
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| JPH01138051A (en) * | 1987-11-24 | 1989-05-30 | Topy Ind Ltd | Method and apparatus for squeezing molten metal |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106180642B (en) * | 2016-07-22 | 2018-03-09 | 太原理工大学 | One kind has shear extrusion function die casting |
| CN109877291A (en) * | 2019-01-29 | 2019-06-14 | 东莞捷荣技术股份有限公司 | Seven line aluminium alloy smallclothes of one kind and its die casting |
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| CN112008060A (en) * | 2019-05-29 | 2020-12-01 | 强莉莉 | Piston liquid die forging forming device and forming method |
| CN112008060B (en) * | 2019-05-29 | 2022-07-01 | 强莉莉 | Piston liquid die forging forming device and forming method |
| CN114951600A (en) * | 2022-06-08 | 2022-08-30 | 刘磊 | Aluminum-magnesium alloy transmission multi-directional extrusion casting die and casting method |
| CN114951600B (en) * | 2022-06-08 | 2023-11-03 | 刘磊 | Multidirectional extrusion casting die and casting method for aluminum-magnesium alloy transmission |
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| CN102921921B (en) | 2014-12-03 |
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