CN114769557A - Throttle valve die-casting die and manufacturing method thereof - Google Patents
Throttle valve die-casting die and manufacturing method thereof Download PDFInfo
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- CN114769557A CN114769557A CN202210455489.6A CN202210455489A CN114769557A CN 114769557 A CN114769557 A CN 114769557A CN 202210455489 A CN202210455489 A CN 202210455489A CN 114769557 A CN114769557 A CN 114769557A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The invention discloses a throttle valve die-casting die which comprises a movable die, a fixed die and a plurality of core-pulling mechanisms, wherein the movable die is fixed on the fixed die; the core pulling mechanisms are respectively connected with the fixed mold core and the movable mold core; the fixed die is provided with a sprue bush positioned below the fixed lining die, and the movable die is provided with a spreader cone which is positioned below the movable lining die and matched with the sprue bush; the fixed lining die is provided with a plurality of feeding channels which are connected with the shunting cones and the forming cavity; the movable die and the fixed die are both provided with an exhaust block connected with a forming cavity, the movable lining die and the fixed lining die are provided with a plurality of overflow grooves connected into the forming cavity and the exhaust block, the end surface of the movable lining die facing the fixed die is uniformly provided with a reticular gas collecting groove, and the circumferential surface of the core of the fixed die is provided with a plurality of vertical gas collecting grooves. In the invention, the exhaust function of the die is optimized by arranging the reticular gas collecting grooves on the lining die, arranging the vertical gas collecting grooves on the die core and matching with the mode of connecting the slag ladle and the exhaust block, thereby effectively reducing the bad proportion of air holes caused by air wrapping in the injection process.
Description
Technical Field
The invention belongs to the technical field of die casting, and particularly relates to a die-casting die for a throttle valve and a manufacturing method of the die-casting die.
Background
The throttle valve body is used as an air inlet gate of an engine, and the opening angle of a throttle valve sheet arranged on the throttle valve body determines the size of air inlet amount, so that the position of the valve body where the throttle valve is arranged is very important, and the air hole exposure after processing needs to be less than or equal to 0.4 mm.
Because the product structure is complicated, it is many to subtract heavy position, and in addition the product gas pocket requires tightly, therefore, die casting die need have good exhaust function. However, the existing die-casting die for the throttle valve has insufficient exhaust function, so that the bad air hole ratio caused by air wrapping in the injection process is high.
Disclosure of Invention
The invention provides a die-casting die for a throttle valve and a manufacturing method thereof, and aims to solve the problem that the die-casting die for the throttle valve in the prior art is insufficient in exhaust function.
The invention adopts the following technical scheme:
a die-casting die for a throttle valve comprises a movable die, a fixed die and a plurality of core-pulling mechanisms;
a fixed lining die and a fixed die core arranged in the fixed lining die are arranged in the fixed die, and the fixed lining die is provided with a fixed die cavity; a movable lining die and a movable die core installed in the movable lining die are arranged in the movable die, the movable lining die is provided with a movable die cavity, and the fixed die cavity and the movable die cavity are butted to form a forming cavity matched with the structure of the throttle valve; the core pulling mechanisms are respectively connected with the fixed mold core and the movable mold core;
the fixed die is provided with a sprue bush positioned below the fixed lining die, and the movable die is provided with a sprue spreader matched with the sprue bush positioned below the movable lining die; the lining fixing die is provided with a plurality of feeding channels which are connected with the sprue spreader and the molding cavity;
the movable die and the fixed die are both provided with exhaust blocks connected with the forming cavity, the movable lining die and the fixed lining die are provided with a plurality of overflow grooves connected with the forming cavity and the exhaust blocks, the end surface of the movable lining die facing the fixed die is uniformly provided with a reticular gas collecting groove, and the circumferential surface of the core of the fixed die is provided with a plurality of vertical gas collecting grooves.
In some embodiments, the fixed die cavity and/or the movable die cavity are provided with a plurality of slag ladles which are connected in series with each other through the overflow groove and communicated with the corresponding exhaust blocks.
In some embodiments, the movable lining die and the fixed lining die are arranged in a staggered mode with the overflow groove in the front end of the exhaust block.
In some embodiments, the core-pulling mechanism is provided with a first sliding block matched with a slag ladle of the fixed die on the fixed die, and the first sliding block is provided with a barb structure protruding into the slag ladle.
In some embodiments, the first slide has a draft angle of 1 ° -2 ° with the slag ladle.
In some embodiments, the core pulling mechanism is provided with a plurality of second sliding blocks, the fixed die core is provided with a plurality of inner gates, the end surfaces of the second sliding blocks are higher than the inner gates, and the inner gates are vertically connected with the die cavity.
In some embodiments, the second slide block is provided with a groove at the joint of the ingate and the fixed die cavity, and the groove is 1mm larger than the width of the corresponding ingate.
In some embodiments, the end surface of the fixed mold core facing the movable mold is provided with meshed gas collecting grooves which are arranged in a grid shape, and the meshed gas collecting grooves on the fixed mold core and the movable mold core are staggered and do not overlap with each other.
In some embodiments, the core pulling mechanism is located at the bottom of the movable mold and used for pulling the core downwards, the mold foot comprises a plurality of standing blocks located on two sides and a plurality of connecting rods located at the bottom, the standing blocks on the same side are fixedly connected with each other, the connecting rods are parallel to each other on the same height, two ends of each connecting rod are fixedly connected with the standing blocks on the two sides, and a position for placing the core is formed between the stand columns on the two sides.
A manufacturing method of the throttle valve adopts the die-casting die for the throttle valve, and comprises the following steps:
s1, preparing an aluminum alloy ingot;
s2, mixing the aluminum alloy ingot and the waste scrap foundry returns according to the weight ratio of 5-6: 5-4, putting the mixture into a continuous melting furnace for dissolving, wherein the temperature of aluminum liquid is 710-750 ℃;
s3, mixing a refining agent accounting for 0.2 percent of the weight of furnace burden with aluminum liquid, performing refining dehydrogenation treatment by using dehydrogenation equipment in a matching way, and after the operation is finished, skimming slag and transferring to a machine-side heat preservation furnace to ensure the temperature of the aluminum liquid to be 650-670 ℃;
s4, sequentially carrying out artificial hot die, low-speed hot die and low-pressure hot die on the die;
s5, injecting the aluminum liquid into the throttle valve die-casting die for die-casting production, and taking out the product after cooling;
s6, after the product is taken out, automatically spraying and blowing the mold, and measuring the temperature of the designated position of the mold after the product is taken out;
s7, removing a slag ladle and an overflow port of the product, and cutting off the pouring channel;
s8, deburring the product and correcting the bolt through hole on the product;
and S9, performing shot blasting treatment on the surface of the product.
Compared with the prior art, the invention has the beneficial effects that:
in the invention, the exhaust function of the die is optimized by arranging the reticular gas collecting grooves on the lining die, arranging the vertical gas collecting grooves on the die core and matching with the mode of connecting the slag ladle and the exhaust block, thereby effectively reducing the bad proportion of air holes caused by air wrapping in the injection process.
Drawings
The technology of the present invention is described in further detail below with reference to the accompanying drawings and the detailed description:
FIG. 1 is a schematic structural view of a movable die of a throttle die-casting die of the invention;
FIG. 2 is a schematic structural diagram of a fixed die of the throttle die-casting die of the invention;
FIG. 3 is a schematic structural view of a movable lining die of the throttle die-casting die of the invention;
FIG. 4 is a schematic structural view of a lining mold of the throttle die-casting mold of the present invention;
FIG. 5 is a schematic structural view of a fixed mold core of the throttle die-casting mold of the present invention;
FIG. 6 is a schematic view of a movable mold exhaust block and a stationary mold exhaust block of the throttle die casting mold of the present invention;
FIG. 7 is a schematic structural view of a first slide block of the throttle die-casting mold of the invention;
FIG. 8 is a structural schematic diagram of a second slide block of the throttle die-casting mold of the invention;
fig. 9 is a schematic structural view of a die leg of the throttle die-casting mold of the present invention.
Reference numerals:
1-moving a mould; 11-moving lining die; 12-a moving mould core;
2-fixing the mold; 21-lining die; 211-a feed channel; 22-a stationary mold core; 221-an inner gate; 222-vertical gas collecting channel;
3-a core-pulling mechanism; 31-a first slider; 311-a barb structure; 32-a second slider; 321-a groove;
4-exhaust block; 41-a reinforcing groove;
5-an overflow trough;
6-slag ladle;
7-a reticular gas collecting tank;
8-mold feet; 81-vertical block; 82-a connecting rod; 83-a core placing position;
9-oil collection block; 91-oil pipe.
Detailed Description
The conception, the specific structure and the technical effects of the present invention will be clearly and completely described in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the schemes and the effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The same reference numbers will be used throughout the drawings to refer to the same or like parts.
It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Further, the description of the upper, lower, left, right, etc. used in the present invention is only with respect to the positional relationship of the respective components of the present invention with respect to each other in the drawings.
Referring to fig. 1 to 9, the throttle valve die-casting die comprises a movable die 1, a fixed die 2 and a plurality of core-pulling mechanisms 3.
The fixed die 2 is internally provided with a fixed lining die 21 and a fixed die core 22 arranged in the fixed lining die 21, and the fixed lining die 21 is provided with a fixed die cavity; a movable lining die 11 and a movable die core 12 installed in the movable lining die 11 are arranged in the movable die 1, the movable lining die 11 is provided with a movable die cavity, and the fixed die cavity and the movable die cavity are butted to form a forming cavity matched with the structure of the throttle valve; the core pulling mechanisms 3 are respectively connected with the fixed mold core 22 and the movable mold core 12. The movable die 1 and the fixed die 2 are matched to form a molding cavity, so that die casting can be performed, and the core-pulling mechanism 3 is used for pulling out a core. According to actual conditions, the core pulling direction of the core pulling mechanism 3 can be different, and the core pulling direction can be up and down, front and back, left and right, and the like.
The fixed die 2 is provided with a sprue bush positioned below the fixed lining die 21, and the movable die 1 is provided with a sprue spreader positioned below the movable lining die 11 and matched with the sprue bush; the lining die 21 is provided with a plurality of feeding channels 211 connecting the diverging cones and the forming cavity. The molten aluminum alloy is poured into a machine tool melting cup through a material taking spoon, the molten aluminum is pushed towards a sprue bush through a machine tool punch, and is shunted by a shunting cone, reaches an inner sprue 221 of the die from a feeding channel 211 and is sprayed into a vacant forming cavity, and the molten aluminum alloy is cooled and formed. The feed channel 211 is a runner.
The movable mold 1 and the fixed mold 2 are both provided with an exhaust block 4 connected with the molding cavity, the movable lining mold 11 and the fixed lining mold 21 are provided with a plurality of overflow grooves 5 connected with the molding cavity and the exhaust block 4, and in the aluminum liquid filling process, air in the molding cavity is exhausted through the exhaust block 4, so that the air content in a finished casting is reduced. The end surface of the movable lining die 11 facing the fixed die 2 is uniformly provided with reticular gas collecting grooves 7, and the circumferential surface of the fixed die core 22 is provided with a plurality of vertical gas collecting grooves 222. The end faces provided with the reticular gas collecting grooves 7 and the vertical gas collecting grooves 222 are both contact end faces of the die and the workpiece, and meanwhile, the surfaces of the workpiece are subsequent processing end faces. And in the process of injecting the aluminum liquid into the forming cavity, the gas at the inner end surface of the die is driven into the reticular gas collecting grooves 7 and the vertical gas collecting grooves 222, so that the air holes on the machined end surface are reduced. Wherein the section of the reticular gas collecting groove 7 is in a semicircular arc shape of R0.5. In addition, the round angle at the periphery of the machined end face part is 0.2-0.3mm larger than the machining allowance. As for the casting, the allowance of the machined surface is 0.5mm, and the peripheral fillet is set to be 0.7-0.8mm, so that the fillet of 0.2-0.3mm is left at the periphery of the machined surface after machining, and the step of removing sharp-angled burrs is avoided.
Preferably, the fixed die cavity and/or the movable die cavity are/is provided with a plurality of slag ladles 6, the slag ladles 6 are connected in series through the overflow grooves 5 and are communicated with the corresponding exhaust blocks 4, the slag ladles 6 are connected in series through the overflow grooves 5 and are connected with the exhaust blocks 4, the connection among the slag ladles 6 is effectively strengthened, and the problem of abnormal shutdown caused by the dropping of the slag ladles 6 in the production process is avoided. Furthermore, the movable lining die 11 and the fixed lining die 21 are arranged in a staggered manner with the overflow groove 5 at the front end of the exhaust block 4, so that high-speed impact in the aluminum liquid filling process can be effectively buffered, and the aluminum liquid is ejected out of the die.
Preferably, the core pulling mechanism 3 is provided with a first slide block 31 matched with the slag ladle 6 of the fixed mold 2 on the fixed mold 2, the first slide block 31 is provided with a barb structure 311 protruding into the slag ladle 6, after the filling of the aluminum liquid is completed, the slag ladle 6 is combined with the barb structure 311, and when the mold is opened, the first slide block 31 is pulled out, and meanwhile, the slag ladle 6 of the fixed mold 2 is also forced to be taken out. Wherein, in order to avoid the situation that the overflow port of the slag ladle 6 is cracked when the first sliding block 31 is drawn out, and the slag ladle 6 falls into the mold when the product is ejected, the first sliding block 31 and the slag ladle 6 have a draft angle of 1-2 °, and in one embodiment, the draft angle is 1.5 °.
In some embodiments, the core pulling mechanism 3 is provided with a plurality of second sliders 32, the fixed mold core 22 is provided with a plurality of inner gates 221, and the end surfaces of the second sliders 32 are 15mm higher than the inner gates, so that the inner gates 221 are vertically connected with the mold cavity, and a large transition angle is formed on the second sliders 32 for smoother feeding.
In some embodiments, the second slider 32 is provided with a groove 321 at a connection position of the ingate 221 and the fixed mold cavity, the width of the groove 321 is 1mm larger than that of the corresponding ingate 221, after the molten aluminum is filled, a boss is formed on a product at the position, and the boss is disconnected from the position when the material channel is removed, so that the problem of meat falling of the product is avoided, wherein the height of the groove 321 is 2 mm.
In some embodiments, the end surface of the fixed mold core 22 facing the movable mold 1 is provided with meshed gas collecting grooves 7 arranged in a meshed manner, and the meshed gas collecting grooves 7 on the fixed mold core 22 and the movable mold core 12 are staggered and misaligned with each other, so as to further contain gas at the inner end surface of the mold during injection, and reduce the machined end surface pores. Wherein, the reticular gas collecting groove 7 does not extend to the inner gate 221.
Further, the exhaust blocks 4 of the movable mold 1 and the fixed mold 2 are provided with reinforcing grooves 41 for reinforcing the mold, and the concave grooves 321 are oblong grooves having a radius of 1 mm. In one embodiment, two rows of the reinforcing grooves 41 are arranged on the exhaust block 4 of the movable mold 1, one row of the reinforcing grooves 41 are arranged on the exhaust block 4 of the fixed mold 2, and the rows of the reinforcing grooves 41 on the movable mold 1 and the fixed mold 2 are staggered. The arrangement of the reinforcing groove 41 is beneficial to reinforcing the exhaust block 4, and the exhaust block 4 can be smoothly taken out during ejection.
In some embodiments, the throttle valve die-casting mold further comprises mold legs 8, one of the core-pulling mechanisms 3 is located at the bottom of the movable mold 1 and used for pulling the core downwards, the mold legs 8 comprise a plurality of standing blocks 81 located on two sides and a plurality of connecting rods 82 located at the bottom respectively, the standing blocks 81 on the same side are fixedly connected with each other, the connecting rods 82 are parallel to each other at the same height, two ends of each connecting rod are fixedly connected with the standing blocks 81 on the two sides respectively, a core placing position 83 is formed between the standing columns on the two sides, a 5mm gap is formed between the two standing blocks after the mold is located on the mold legs 8, the mold and the mold legs 8 are reinforced by bolts, the bolts are loosened when the mold is used, the mold is directly lifted from the mold legs 8, and the risk of mold falling is reduced conveniently and quickly.
In addition, as shown in fig. 1, one core-pulling mechanism 3 of the throttle valve die-casting die of the invention is located at the top of the movable die 1 and used for pulling the core upwards, an oil collecting block 9 is arranged on the side surface of the movable die 1, the oil collecting block 9 is connected with the hydraulic cylinders (namely, the hydraulic cylinders are used as the power of the core-pulling mechanism 3) of the core-pulling mechanisms 3 at the top and the bottom through oil pipes 91 and is connected with a hydraulic control loop, and oil inlet and outlet ports of the cylinders of the core-pulling mechanisms 3 at the top and the bottom are switched to the side surface of the die, so that the difficulty of connecting the oil pipes 91 to the ground and the sky after the die is mounted on the machine tool can be greatly reduced.
A manufacturing method of the throttle valve adopts the die-casting die for the throttle valve, and comprises the following steps:
s1, preparing an aluminum alloy ingot, wherein the aluminum alloy ingot comprises aluminum, silicon, copper, manganese, magnesium, nickel, zinc, tin, iron, lead, titanium, chromium and cadmium, and the mass percentage of each substance is as follows: 10.5 to 12 percent of silicon, 1.5 to 3.5 percent of copper, less than or equal to 0.5 percent of manganese, less than or equal to 0.3 percent of magnesium, less than or equal to 0.5 percent of nickel, less than or equal to 1 percent of zinc, less than or equal to 0.2 percent of tin, less than or equal to 1.3 percent of iron, less than or equal to 0.1 percent of lead, less than or equal to 0.3 percent of titanium, less than or equal to 0.1 percent of chromium, less than or equal to 0.01 percent of cadmium, and the balance of aluminum.
S2, the aluminum alloy ingot and the scrap returns are mixed according to the proportion of 5-6: 5-4, putting the mixture into a continuous melting furnace for dissolving, wherein the temperature of the aluminum liquid is 710-750 ℃;
s3, mixing a refining agent accounting for 0.2 percent of the weight of furnace burden with molten aluminum, performing refining dehydrogenation treatment by using dehydrogenation equipment in a matching manner, and after the operation is finished, skimming and transferring to an on-machine side heat preservation furnace to ensure the temperature of the molten aluminum to be 650-670 ℃;
and S4, performing artificial hot die, low-speed hot die and low-pressure hot die on the die in sequence. Specifically, household gas is matched with a spray gun to perform artificial hot molding, a layer of butter is uniformly coated on a cavity part by using a brush before hot molding, all cooling water outside a sprue bush and a sprue spreader is closed, the sides of a moving die and a fixed die are uniformly baked for 5min back and forth, and the hot molding enters a low-speed and low-pressure hot mold after artificial hot molding.
And S5, injecting the aluminum liquid into the throttle valve die-casting die for die-casting production, and taking out the product after cooling. In the die-casting process, the die-casting technological parameters are as follows: the casting pressure is 750-800kg/cm2The first stage is 025m/s, the actual high-speed is 3.5-4m/s, the cooling time is 10s, and after the cooling time is finished, the movable die 1 and the fixed die 2 are separated, and a product is taken out.
S6, after the product is taken out, the mould is automatically sprayed and blown, and after the spraying and blowing, the temperature of the appointed position of the mould is measured; wherein, the spraying, the air blowing and the temperature measurement are automatically carried out by a spraying machine.
S7, removing the slag ladle 6 of the product, an overflow port and cutting off the pouring gate. After the product is taken out by the workpiece taking manipulator, the overflow port and the like of the slag ladle 6 are manually removed, and then the product is placed on the stamping die to cut off the runner.
And S8, deburring the product and correcting the bolt through hole on the product. Specifically, adopt carving to mill machining center and remove the parting line burr, because four bolt hole position degrees are strict relatively, reserve the machining allowance and use the four-shaft coupling drilling machine to correct the bolt via hole in addition, all the other burrs are removed through the manual work.
And S9, performing shot blasting treatment on the surface of the product. Specifically, the casting is evenly hung on a shot blasting hanging tool, 0.3mm stainless steel shots are used for spraying the surface of a product, micro burrs on the surface of the casting are further cleaned, the surface smoothness of the casting is improved, the stainless steel shots need to be processed into shot-shaped products, and the peeling of the product in the shot spraying process is avoided.
Other contents of the throttle valve die-casting die and the manufacturing method thereof are referred to in the prior art and are not described herein again.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention will still fall within the scope of the technical solution of the present invention.
Claims (10)
1. A die-casting die for a throttle valve is characterized by comprising a movable die, a fixed die and a plurality of core-pulling mechanisms;
a fixed lining die and a fixed die core arranged in the fixed lining die are arranged in the fixed die, and the fixed lining die is provided with a fixed die cavity; a movable lining die and a movable die core installed in the movable lining die are arranged in the movable die, the movable lining die is provided with a movable die cavity, and the fixed die cavity and the movable die cavity are butted to form a forming cavity matched with the structure of the throttle valve; the core pulling mechanisms are respectively connected with the fixed mold core and the movable mold core;
the fixed die is provided with a sprue bush positioned below the fixed lining die, and the movable die is provided with a sprue spreader matched with the sprue bush positioned below the movable lining die; the lining fixing die is provided with a plurality of feeding channels for connecting the sprue spreader and the molding cavity;
the movable mold and the fixed mold are both provided with an exhaust block connected with the molding cavity, the movable lining mold and the fixed lining mold are provided with a plurality of overflow grooves connected with the molding cavity and the exhaust block, the end surface of the movable lining mold facing the fixed mold is uniformly provided with a reticular gas collecting groove, and the circumferential surface of the core of the fixed mold is provided with a plurality of vertical gas collecting grooves.
2. The throttle valve die-casting mold as claimed in claim 1, wherein the fixed mold cavity and/or the movable mold cavity is provided with a plurality of slag ladles, and the slag ladles are connected in series with each other through the overflow groove and communicated with the corresponding exhaust blocks.
3. The throttle valve die-casting mold as claimed in claim 2, wherein the movable lining mold and the fixed lining mold are arranged in a staggered manner with respect to an overflow groove at the front end of the exhaust block.
4. The throttle valve die-casting mold as claimed in claim 2, wherein the core-pulling mechanism is provided with a first slide block matched with a slag ladle of the fixed mold on the fixed mold, and the first slide block is provided with a barb structure protruding into the slag ladle.
5. The throttle valve die-casting mold as claimed in claim 4, wherein the first slide block and the cinder ladle have a draft angle of 1-2 °.
6. The throttle valve die-casting die as claimed in claim 4, wherein the core pulling mechanism is provided with a plurality of second sliding blocks, the fixed die core is provided with a plurality of inner gates, end surfaces of the second sliding blocks are higher than the inner gates, and the inner gates are vertically connected with the die cavity.
7. The throttle valve die-casting mold as claimed in claim 6, wherein the second slide block is provided with a groove at the junction of the ingate and the fixed mold cavity, and the groove is 1mm larger than the width of the corresponding ingate.
8. The throttle valve die-casting mold as claimed in claim 1, wherein the end surface of the fixed mold core facing the movable mold is provided with meshed gas collecting grooves arranged in a grid shape, and the meshed gas collecting grooves on the fixed mold core and the movable mold core are arranged in a staggered manner and do not overlap with each other.
9. The throttle valve die-casting die as claimed in claim 1, further comprising a die foot, wherein one of the core-pulling mechanisms is located at the bottom of the movable die and used for pulling the core downwards, the die foot comprises a plurality of standing blocks located on two sides and a plurality of connecting rods located at the bottom respectively, the standing blocks on the same side are fixedly connected with each other, the connecting rods are parallel to each other on the same height, two ends of each connecting rod are fixedly connected with the standing blocks on the two sides respectively, and a position for placing the core is formed between the stand columns on the two sides.
10. A throttle valve manufacturing method characterized by using the throttle valve die-casting mold as recited in any one of claims 1 to 9, the method comprising the steps of:
s1, preparing an aluminum alloy ingot;
s2, mixing the aluminum alloy ingot and the waste scrap foundry returns according to the weight ratio of 5-6: 5-4, putting the mixture into a continuous melting furnace for dissolving, wherein the temperature of the aluminum liquid is 710-750 ℃;
s3, mixing a refining agent accounting for 0.2 percent of the weight of furnace burden with aluminum liquid, performing refining dehydrogenation treatment by using dehydrogenation equipment in a matching way, and after the operation is finished, skimming slag and transferring to a machine-side heat preservation furnace to ensure the temperature of the aluminum liquid to be 650-670 ℃;
s4, sequentially carrying out artificial hot die, low-speed hot die and low-pressure hot die on the die;
s5, injecting the aluminum liquid into the throttle valve die-casting die for die-casting production, and taking out the product after cooling;
s6, after the product is taken out, the mould is automatically sprayed and blown, and after the spraying and blowing, the temperature of the appointed position of the mould is measured;
s7, removing a slag ladle and an overflow port of the product, and cutting off the pouring channel;
s8, deburring the product and correcting the bolt through hole on the product;
and S9, performing shot blasting treatment on the surface of the product.
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| CN202210455489.6A CN114769557B (en) | 2022-04-24 | 2022-04-24 | Throttle valve die-casting die and manufacturing method thereof |
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| CN202210455489.6A CN114769557B (en) | 2022-04-24 | 2022-04-24 | Throttle valve die-casting die and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115502361A (en) * | 2022-11-22 | 2022-12-23 | 广东鸿图南通压铸有限公司 | Die casting process for preventing core-pulling deflection of long oil duct |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002178335A (en) * | 2000-12-14 | 2002-06-26 | Hinode Rubber Kogyo Kk | Air vent structure of mold |
| CN202498199U (en) * | 2012-01-19 | 2012-10-24 | 宁波环亚机械制造有限公司 | Aluminium alloy die-casting die for large-scale LED lamp housing |
| JP2017024075A (en) * | 2015-07-24 | 2017-02-02 | 株式会社日伸電工 | Molding die device, vent pin and molding method |
| CN108746547A (en) * | 2018-08-16 | 2018-11-06 | 天津市发利汽车压铸件厂 | A kind of die casting equipment improving the cast product internal soundness with boss structure |
| CN109807308A (en) * | 2019-03-26 | 2019-05-28 | 佛山市灿东模具技术有限公司 | The auxiliary pressure casting mould of aluminium alloy |
| CN210498321U (en) * | 2019-08-29 | 2020-05-12 | 宁波杰达模具机械有限公司 | Die casting die of car wisdom charging pile casing |
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2022
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| JP2002178335A (en) * | 2000-12-14 | 2002-06-26 | Hinode Rubber Kogyo Kk | Air vent structure of mold |
| CN202498199U (en) * | 2012-01-19 | 2012-10-24 | 宁波环亚机械制造有限公司 | Aluminium alloy die-casting die for large-scale LED lamp housing |
| JP2017024075A (en) * | 2015-07-24 | 2017-02-02 | 株式会社日伸電工 | Molding die device, vent pin and molding method |
| CN108746547A (en) * | 2018-08-16 | 2018-11-06 | 天津市发利汽车压铸件厂 | A kind of die casting equipment improving the cast product internal soundness with boss structure |
| CN109807308A (en) * | 2019-03-26 | 2019-05-28 | 佛山市灿东模具技术有限公司 | The auxiliary pressure casting mould of aluminium alloy |
| CN210498321U (en) * | 2019-08-29 | 2020-05-12 | 宁波杰达模具机械有限公司 | Die casting die of car wisdom charging pile casing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115502361A (en) * | 2022-11-22 | 2022-12-23 | 广东鸿图南通压铸有限公司 | Die casting process for preventing core-pulling deflection of long oil duct |
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| Publication number | Publication date |
|---|---|
| CN114769557B (en) | 2023-06-20 |
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