CN103372638A - Zinc-alloy USB (universal serial bus) thin-walled workpiece die-casting die structure - Google Patents
Zinc-alloy USB (universal serial bus) thin-walled workpiece die-casting die structure Download PDFInfo
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- CN103372638A CN103372638A CN201310292753XA CN201310292753A CN103372638A CN 103372638 A CN103372638 A CN 103372638A CN 201310292753X A CN201310292753X A CN 201310292753XA CN 201310292753 A CN201310292753 A CN 201310292753A CN 103372638 A CN103372638 A CN 103372638A
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- ingate
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- usb
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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
- B22D17/2272—Sprue channels
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C18/00—Alloys based on zinc
- C22C18/04—Alloys based on zinc with aluminium as the next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a zinc-alloy USB (universal serial bus) thin-walled workpiece die-casting die structure. The zinc-alloy USB thin-walled workpiece die-casting die structure comprises a straight pouring runner, cross pouring runners, inner pouring runners and die cavities in sequential connection, wherein the inner pouring runners are communicated with the die cavities via inner pouring gates, cross section areas of the straight pouring runner, the cross pouring runners, the inner pouring runners and the inner pouring gate gradually decrease along flowing directions of metal liquid, an acute jet flow angle ranging from 30 to 45 degrees is formed between the direction of the metal liquid entering one of the die cavities via the corresponding inner pouring runner and a plane wherein the corresponding inner pouring gate is located, and jet flow positions of the metal liquid in the inner pouring runners are adjacent to the rear end faces of the die cavities. The zinc-alloy USB thin-walled workpiece die-casting die structure is simple in structure; directions for the metal liquid to enter the die cavities are controllable, so that flowing process of melted metal liquid entering the die cavities through a pouring system can be controlled effectively, degree of mixing with air is decreased, the metal liquid is enabled to be filled in a die well integrally, proportions of surface blistering, surface flow liners, loose structures, low strength and electrical conductivity decreasing of zinc-alloy thin-walled workpiece products are lowered, and qualified rate of products is increased.
Description
Technical field
The application belongs to Miniature thin-wall spare placingJi Shu field, specifically, relates to a kind of kirsite USB thin-wall part structure of cast die.
Background technology
At present; thin-walled miniature zinc alloy mainly refers to the zinc alloy product that wall thickness is 0.1mm ~ 0.5mm; the filling velocity of thin-walled miniature zinc alloy pressuring casting generally is about 40 m/s; under the effect of high-voltage high-speed; it is to fill shape with injection stream that molten metal begins to enter die cavity; in filling process, be collided, friction, resistance etc. are constantly during loss; injection stream becomes pressure current; therefore; the position of injection stream filling is than good by the surface quality at the position of pressure current filling; and the generation of defective, especially bubble are prone in the position of pressure current filling.This class zinc alloy product bubble very easily occurs and owes the defective such as casting in process of production.Therefore reasonably pouring technology and Design of Dies are forming important effect to foundry goods.The modal defective of zinc alloy diecasting is surface blistering, loosely organized, thereby causes strength decreased, electrical conductivity to descend, and can not reach quality standards, and causes the product fraction defective high, has a strong impact on the normal production of product.More seriously, some defective is difficult to inspection out in the die casting semi-finished product, and reveals in processing technology thereafter, just can reveal in electroplating, and this has caused even more serious loss to production undoubtedly.
Therefore the reason that causes defects is many-sided, but all adopts ingate perpendicular to mold cavity structure in the prior art, thinks that there is not horizontal component velocity in such molten metal, and speed loss is less when entering mold cavity, and it is better to fill the type condition.
Summary of the invention
The application's purpose is in order to overcome shortcoming of the prior art, a kind of kirsite USB thin-wall part structure of cast die is provided, it has simple in structure, low cost of manufacture, effectively reduce molten metal and in cavity filling process, mix with air, and the eddy current that produces, roll up gas and then make product fill type complete, blibbing and flow liner minimizing, surface smoothness improves, the characteristics that product percent of pass improves.
In order to solve the problems of the technologies described above, the application is achieved through the following technical solutions:
A kind of kirsite USB thin-wall part structure of cast die, comprise the sprue, cross gate, ingate and the mold cavity that connect successively, be communicated with by ingate between ingate and the mold cavity, the cross-sectional area of sprue, cross gate, ingate and ingate dwindles gradually along the mobile direction of molten metal, molten metal enters by ingate and is provided with 30 degree between the direction of mold cavity and the plane, ingate place to the flow angle of 45 degree acute angles, and the rear end face of the contiguous mold cavity of the incoming position of the molten metal in the ingate.
Further, molten metal enters by ingate and is provided with 30 degree between the direction of mold cavity and the plane, ingate place to the flow angle of 40 degree acute angles.
Further, cross gate and ingate junction are set to the R angle, and the radius at R angle is 10mm to 15mm.
Further, the mid point of ingate is 2mm to 3mm to the distance of the rear end face of mold cavity.
Further, the mid point of ingate is 2.5mm to the distance of the rear end face of mold cavity.
Compared with prior art, the application's beneficial effect is:
The described a kind of kirsite USB thin-wall part structure of cast die of the application, it is simple in structure, reasonable in design, in running channel, molten metal enters mold cavity by ingate, at an angle, rather than the right angle is injected, molten metal enters the flow angle of mold cavity, make it between 30 degree are spent to 45, the direction that molten metal enters mold cavity is in check, and then effectively control molten metal bath and enter the flow process of die cavity by running gate system, reduce the degree that it mixes with air, so that molten metal whole filling in mould is good, having reduced kirsite thin-wall part product surface bubbles, the surface flow liner, loosely organized, intensity is low, the ratio that electrical conductivity descends, the qualification rate of raising product.
Description of drawings
Accompanying drawing is used to provide the further understanding to the application, is used from explanation the application with the application's embodiment one, does not consist of the restriction to the application, in the accompanying drawings:
Fig. 1 is the structural representation of a kind of kirsite USB of the application thin-wall part structure of cast die;
Fig. 2 is the structure for amplifying schematic diagram at A place among Fig. 1.
Include among Fig. 1, Fig. 2:
1---mold cavity,
2---ingate,
3---cross gate,
4---sprue,
5---ingate,
α---flow angle,
A---horizontal component velocity,
B---vertical component velocity.
The specific embodiment
Describe below in conjunction with the preferred embodiment of accompanying drawing to the application, should be appreciated that preferred embodiment described herein only is used for description and interpretation the application, and be not used in restriction the application.
As shown in Figure 1 and Figure 2, the described a kind of kirsite USB thin-wall part structure of cast die of the application, comprise the sprue 4, cross gate 3, ingate 5 and the mold cavity 1 that connect successively, be communicated with by ingate 2 between ingate 5 and the mold cavity 1, the cross-sectional area of sprue 4, cross gate 3, ingate 5 and ingate 2 dwindles gradually along the molten metal direction that flows.Increase the flow velocity of molten metal, fill the good desired flow velocity of type so that the molten metal flow velocity of close ingate 2 reaches.Molten metal enters by ingate 5 and is provided with 30 degree between the direction of mold cavity 1 and the plane, ingate 2 place to the flow angle of 45 degree acute angles, and the rear end face of the contiguous mold cavity 1 of the incoming position of the molten metal in the ingate 5.Cooperate incident angle, being convenient to mould, to fill type complete.
Wherein, cross gate 3 is set to the R angle with ingate 5 junctions, and the radius at R angle is 12mm.The R angle so that molten metal in running channel, flow smooth and easy, from cross gate 3 smooth-going be transitioned into ingate 5.
The mid point of ingate 2 is 2.5mm to the distance of the rear end face of mold cavity 1.Molten metal cushions the impact that mould is subject to when ingate 2 place's flow velocitys are excessive, reduce the mould corrosion.
Molten metal is a large factor that affects product quality by the angle that ingate enters the jet of die cavity.The angle of jet determines by two component velocities, as shown in Figure 2: a be molten metal along cross gate side progressive horizontal component velocity; B is the vertical component velocity that is produced by the molten metal pressure-acting, and α is flow angle.
Concrete, iron-clad is as example before the die casting USB3.0, and the foundry goods molding technique parameter is as follows:
Iron-clad before title: the USB3.0
Material: kirsite (Zemark3)
Smelting temperature: 420 ℃
Foundry goods substance: 0.830g
Mouth of a river weight: 6.349 g
Fig. 1 is the integral body casting embryo figure of foundry goods, and two foundry goods proportion in whole strand is very little.Whole casting embryo weight is 8.009g, and the substance of foundry goods only is 0.830g.According to substance and the shape of foundry goods, designing and calculating goes out the shape and size specification of sprue 4, cross gate 3, ingate 5 and ingate 2.
Structure according to foundry goods, analyze its flowability, make following five kinds of running gate system schemes, the size and dimension of the sprue 4 of five kinds of schemes, cross gate 3, ingate 5 and ingate 2 is all the same, by changing ingate 5 and ingate 2, change the angle between molten metal enters the direction of mold cavity 1 and ingate 2 by ingate 5 the cross section, flow angle Fen Do is 45 °, 40 °, 35 °, 33 °, 30 °.
Analyze the foundry goods forming process by digital simulation, to above-mentioned five kinds of foundry goods schemes, with the magnificent simulation softward INTER-CAST of section, the stowing operation of foundry goods carried out digital simulation, draw following analog result:
When flow angle is 45 °, by the stowing operation film analysis, can see that the change of temperature field of foundry goods is less, the molten metal confluence area is less, and volume gas is less, and eddy current is few, and whole filling state is better, and quality is better.
When flow angle was 40 °, by the stowing operation film analysis, the change of temperature field of foundry goods was less, and molten metal confluence area on foundry goods is less, and the volume air exhaustion is few, and eddy current is few, and the whole filling of foundry goods is in good condition.
When flow angle was 35 °, by the stowing operation film analysis, change of temperature field was very little, and molten metal confluence area on foundry goods is very little, and the volume air exhaustion is few, does not have eddy current, and the whole filling of foundry goods is in good condition.
When flow angle was 33 °, by the stowing operation film analysis, change of temperature field was minimum, and the confluence area of molten metal on foundry goods is less, and did not roll up gas, eddy current, and whole filling is in good condition.
When flow angle was 30 °, by the stowing operation film analysis, change of temperature field was minimum, and molten metal converges in a very low range zone at last, and whole filling is in good condition, does not roll up gas and vortex phenomenon.
See the type situation of filling of foundry goods from digital analogue angle, the filling effect when flow angle is 30 ° is best beyond doubt.
Die trial product effect compares:
According to the artwork of each foundry goods, design corresponding mould, come the die casting machine upper testing mould in richness, obtain following sample:
Efflux angle is 45 ° of die trial samples, and blibbing is less, and bubble volume is less, and there is a small amount of flow liner phenomenon on the surface, and surface finish of casting is better;
Efflux angle is 40 ° of die trial samples, and blibbing is less, and bubble volume is less, and there is a small amount of flow liner phenomenon on the surface, and surface finish of casting is better;
Efflux angle is 35 ° of die trial samples, and blibbing is few, and bubble volume is less, and there is a small amount of flow liner phenomenon on the surface, and surface finish of casting is better;
Efflux angle is 33 ° of die trial samples, and blibbing is few, and bubble volume is little, and the surface does not have the flow liner phenomenon, and surface finish of casting is better;
Efflux angle is 30 ° of die trial samples, and blibbing is few, and bubble volume is little, and the surface does not have the flow liner phenomenon, and surface finish of casting is better.
Carry out numerical analysis by above-mentioned cavity filling process to foundry goods, contrast Chong Tian Knot fruit, again in conjunction with the sample after the die trial, can find out for miniature zinc alloy thin-wall foundry goods, it is non-perpendicular angle during the filled with metal die cavity, and flow angle is between 30 ° to 45 ° the time, molten metal filling in mould is good, therefore, when designing mould, guarantee angle between ingate 5 and the mold cavity 1 between 30 ° to 45 °, the kirsite thin-wall part product surface bubble that obtains is few, bubble volume is little, intensity is high, electrical conductivity is normal, has improved the qualification rate of product.When 30 ° of flow angle As, the filling effect of foundry goods is optimum, and the product yield that obtains is the highest.
It should be noted that at last: above only for the application's preferred embodiment; be not limited to the application; although with reference to embodiment the application is had been described in detail; for a person skilled in the art; it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing; perhaps part technical characterictic wherein is equal to replacement; but all within the application's spirit and principle; any modification of doing, be equal to replacement, improvement etc., all should be included within the application's the protection domain.
Claims (5)
1. kirsite USB thin-wall part structure of cast die, it is characterized in that: comprise the sprue that connects successively, cross gate, ingate and mold cavity, be communicated with by ingate between described ingate and the described mold cavity, described sprue, cross gate, the cross-sectional area of ingate and ingate dwindles gradually along the mobile direction of molten metal, molten metal enters by ingate and is provided with 30 degree between the direction of described mold cavity and the plane, described ingate place to the flow angle of 45 degree acute angles, and the rear end face of the contiguous described mold cavity of the incoming position of the molten metal in the described ingate.
2. a kind of kirsite USB thin-wall part structure of cast die according to claim 1 is characterized in that: molten metal enters between the direction of described mold cavity and the plane, described ingate place by ingate and is provided with 30 degree to the flow angle of 40 degree acute angles.
3. a kind of kirsite USB thin-wall part structure of cast die according to claim 1, it is characterized in that: described cross gate and described ingate junction are set to the R angle, and the radius at described R angle is 10mm to 15mm.
4. a kind of kirsite USB thin-wall part structure of cast die according to claim 1, it is characterized in that: the mid point of described ingate is 2mm to 3mm to the distance of the rear end face of described mold cavity.
5. a kind of kirsite USB thin-wall part structure of cast die according to claim 4, it is characterized in that: the mid point of described ingate is 2.5mm to the distance of the rear end face of described mold cavity.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310292753XA CN103372638A (en) | 2013-07-12 | 2013-07-12 | Zinc-alloy USB (universal serial bus) thin-walled workpiece die-casting die structure |
| US14/329,541 US20150013929A1 (en) | 2013-07-12 | 2014-07-11 | Die-casting mold structure for thin-walled zinc alloy shells for electrical connectors |
| CN201410331533.8A CN104275462A (en) | 2013-07-12 | 2014-07-11 | Zinc alloy electric connector thin-wall element die casting mold and electric connector thin-wall element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310292753XA CN103372638A (en) | 2013-07-12 | 2013-07-12 | Zinc-alloy USB (universal serial bus) thin-walled workpiece die-casting die structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103372638A true CN103372638A (en) | 2013-10-30 |
Family
ID=49458825
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310292753XA Pending CN103372638A (en) | 2013-07-12 | 2013-07-12 | Zinc-alloy USB (universal serial bus) thin-walled workpiece die-casting die structure |
| CN201410331533.8A Pending CN104275462A (en) | 2013-07-12 | 2014-07-11 | Zinc alloy electric connector thin-wall element die casting mold and electric connector thin-wall element |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410331533.8A Pending CN104275462A (en) | 2013-07-12 | 2014-07-11 | Zinc alloy electric connector thin-wall element die casting mold and electric connector thin-wall element |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20150013929A1 (en) |
| CN (2) | CN103372638A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108543924A (en) * | 2018-05-15 | 2018-09-18 | 深圳市奥力压铸五金制品有限公司 | A kind of running gate system and its die-casting process of abnormity optical fiber module evacuated die-casting process |
| CN111390137A (en) * | 2020-05-27 | 2020-07-10 | 湛江德利车辆部件有限公司 | Casting system of automobile component die-casting mold |
| CN111496223A (en) * | 2020-01-19 | 2020-08-07 | 宁波海天金属成型设备有限公司 | Method and system for controlling molten metal gas entrainment of intelligent pressure chamber of die casting machine |
| CN114378273A (en) * | 2022-01-20 | 2022-04-22 | 厦门市佳嘉达机械有限公司 | Die casting die, die casting device and ultrahigh-speed die casting method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016006985A1 (en) * | 2014-07-11 | 2016-01-14 | Lg Electronics Inc. | Method and apparatus for transmitting wi-fi signals in unlicensed spectrum in wireless communication system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19917175A1 (en) * | 1999-04-16 | 2000-10-19 | Daimler Chrysler Ag | Component, especially an automobile part or a cooling body for power electronics or fuel cells, is produced by positioning a binder-freed porous ceramic green body in a die casting die prior to light metal pressure infiltration |
| CN201829742U (en) * | 2010-09-21 | 2011-05-11 | 富士康(昆山)电脑接插件有限公司 | Cable connector assembly |
-
2013
- 2013-07-12 CN CN201310292753XA patent/CN103372638A/en active Pending
-
2014
- 2014-07-11 US US14/329,541 patent/US20150013929A1/en not_active Abandoned
- 2014-07-11 CN CN201410331533.8A patent/CN104275462A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108543924A (en) * | 2018-05-15 | 2018-09-18 | 深圳市奥力压铸五金制品有限公司 | A kind of running gate system and its die-casting process of abnormity optical fiber module evacuated die-casting process |
| CN111496223A (en) * | 2020-01-19 | 2020-08-07 | 宁波海天金属成型设备有限公司 | Method and system for controlling molten metal gas entrainment of intelligent pressure chamber of die casting machine |
| CN111390137A (en) * | 2020-05-27 | 2020-07-10 | 湛江德利车辆部件有限公司 | Casting system of automobile component die-casting mold |
| CN114378273A (en) * | 2022-01-20 | 2022-04-22 | 厦门市佳嘉达机械有限公司 | Die casting die, die casting device and ultrahigh-speed die casting method |
Also Published As
| Publication number | Publication date |
|---|---|
| US20150013929A1 (en) | 2015-01-15 |
| CN104275462A (en) | 2015-01-14 |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20131030 |