CN111360229A - Sprue gate injection device and gating system - Google Patents
Sprue gate injection device and gating system Download PDFInfo
- Publication number
- CN111360229A CN111360229A CN202010178724.0A CN202010178724A CN111360229A CN 111360229 A CN111360229 A CN 111360229A CN 202010178724 A CN202010178724 A CN 202010178724A CN 111360229 A CN111360229 A CN 111360229A
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- Prior art keywords
- hot
- pouring
- sprue
- injection nozzle
- head
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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
- B22D17/007—Semi-solid pressure die casting
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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
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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
- B22D17/30—Accessories for supplying molten metal, e.g. in rations
-
- 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
- B22D17/32—Controlling equipment
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention belongs to the technical field of alloy pouring, and discloses a pouring gate injection device and a pouring system. The sprue injection apparatus comprising: the hot pouring head is internally provided with a hot pouring gate; a first temperature control assembly disposed on an outer side of the hot runner for controlling the temperature of the hot runner; and the injection nozzle is connected with one end of the hot head, and the other end of the hot head is connected with a mold cavity of the mold. According to the pouring gate injection device provided by the embodiment of the invention, through the accurate control of the temperature of the hot pouring head, the alloy material in the hot pouring head is always in the semi-solid state, and during production, after a product is separated from the hot pouring head, the semi-solid alloy in the hot pouring head cannot overflow outwards, but can be kept in the semi-solid state to form the semi-solid plug, and the semi-solid plug is kept in the hot pouring head and is prepared to be injected in the next mold for filling the mold cavity, so that the product quality problem or the safety problem caused by the leakage and splashing of the alloy is avoided.
Description
Technical Field
The invention belongs to the technical field of alloy pouring, and discloses a pouring gate injection device and a pouring system.
Background
The principle of semi-solid magnesium alloy casting is that magnesium particles are added into a machine barrel, the magnesium alloy particles are made into a semi-solid state by the rotation of a screw and the heating of the outer wall of the machine barrel, then an injection seat moves forwards, a nozzle is made to be attached to a sprue gate of a mold, then pressure oil is introduced into an injection cylinder, the screw is made to move forwards, so that a melt material is injected into a closed mold with a low temperature at a high pressure and a high speed, and the closed mold is subjected to pressure maintaining and cooling to be solidified and molded, and then a product can be taken out after the mold is opened.
The traditional common arc nozzle structure needs to retreat for a certain distance after each mold is injected, the purpose is to separate a pouring gate of a mold from a semi-solid magnesium alloy melt at the front section of the nozzle, otherwise, the pouring gate can pull out the semi-solid magnesium alloy melt at the front section of the nozzle when the movable mold is separated during mold opening, so that the leakage of the nozzle is caused, and the alloy state is not converted into the semi-solid liquid magnesium alloy. The process causes the arc head at the front section of the nozzle to be damaged under the action of long-term frequent alternating extrusion stress, so that the arc surface loses the material sealing effect, and adverse consequences such as material spraying, splashing and the like are caused during injection, so that the damage to a human body or equipment can be caused greatly, a shrinkage cavity is formed, and the quality of a product is reduced finally.
Therefore, the pouring equipment in the prior art is difficult to ensure the transformation of the alloy state when alloy pouring is carried out, so that the alloy melt is easy to leak and splash along with the pulling of the pouring equipment after the pouring is finished, and the pouring safety and the quality of a poured product are greatly influenced.
Disclosure of Invention
The invention provides a pouring gate injection device, and aims to solve the problem that alloy state transformation is difficult to ensure when pouring equipment in the prior art performs alloy pouring, so that alloy melt is easy to leak, leak and splash along with the pouring equipment after pouring is completed.
The embodiment of the present invention is achieved as follows, and a gate injection device includes:
the hot pouring head is internally provided with a hot pouring gate;
a first temperature control assembly disposed on an outer side of the hot runner for controlling the temperature of the hot runner; and
and the injection nozzle is connected with one end of the hot sprue, and the other end of the hot sprue is connected with a mold cavity of the mold.
Preferably, the first temperature control assembly includes:
a first thermocouple disposed on an outer wall of the hot topping; and
the first heating ring is wound outside the hot pouring head.
Preferably, the cross-sectional diameter of the runner opening on the side of the hot runner facing the pouring direction changes from small to large along the pouring direction.
Preferably, a cooling ring is provided externally of the junction between the injection nozzle and the hot topping.
Preferably, a third thermocouple is arranged on the outer wall of the cooling ring, a channel is arranged inside the cooling ring and used for introducing gas or liquid, and therefore the temperature of the connection position between the injection nozzle and the hot topping is controlled by the cooling ring.
Preferably, the method further comprises the following steps: the bushing is sleeved along the extension outside the hot pouring head, the cooling ring and the front end of the injection nozzle and used for detachably and fixedly arranging the hot pouring head, the cooling ring and the front end of the injection nozzle at a pouring gate of a mold.
Preferably, a material blocking member is provided between the bushing and the injection nozzle.
Preferably, a second temperature control assembly is disposed on an outer side of the injection nozzle, and the second temperature control assembly includes:
a second thermocouple disposed on an outer wall of the injection nozzle; and
and the second heating ring is wound outside the injection nozzle.
Another aspect of the invention relates to a gating system, comprising:
the casting mold is provided with a casting port;
in the sprue gate injection device, the hot runner end is inserted into the sprue gate so that the runner port of the hot runner is close to the cavity of the casting mold.
According to the pouring gate injection device provided by the embodiment of the invention, through the accurate control of the temperature of the hot pouring head, the alloy material in the hot pouring head is always in the semi-solid state, and during production, after a product is separated from the hot pouring head, the semi-solid alloy in the hot pouring head cannot overflow outwards, but can be kept in the semi-solid state to form the semi-solid plug, and the semi-solid plug is kept in the hot pouring head and is prepared to be injected in the next mold for filling the mold cavity, so that the product quality problem or the safety problem caused by the leakage and splashing of the alloy is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a sprue gate injection apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a hot runner head according to another embodiment of the present invention;
FIG. 3 is a schematic perspective view of a cooling ring according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a cooling ring according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a sprue gate injection apparatus according to another embodiment of the present invention;
fig. 6 is a schematic structural diagram of a gating system according to an embodiment of the present invention.
In the drawings: 1. hot topping; 2. a hot runner; 3. a first temperature control assembly; 31. a first thermocouple; 32. a first heat-generating ring; 4. an injection nozzle; 5. a bushing; 51. a sprue bushing; 52. a gate bushing; 6. a material blocking part; 7. a second temperature control assembly; 71. a second thermocouple; 72. a second heat-generating ring; 8. a cooling ring; 9. a third thermocouple; 10. a channel; 11. pouring a mold; 12. a pouring gate; 13. a sprue injection device.
Detailed description of the preferred embodiments
In order to better understand the technical solutions, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Examples
Example 1
As shown in fig. 1, a block diagram of a gate injection device according to an embodiment of the present invention is provided, and the embodiment of the present invention is implemented as follows, and the gate injection device includes:
a hot pouring head 1, wherein a hot pouring gate 2 is arranged in the hot pouring head 1 and is used for injecting pouring materials;
the first temperature control component 3 is arranged on the outer side of the hot runner 1 and used for controlling the temperature of the hot runner 1 so as to control the temperature of the pouring material in the hot runner 2; and
and the injection nozzle 4 is connected with one end of the hot pouring head 1, the other end of the hot pouring head 1 is connected with a mold cavity of the mold, and the injection nozzle 4 is used for pouring the pouring material through the hot pouring head.
In the embodiment of the present invention, magnesium alloy casting is mainly taken as an example for description, and in other embodiments of the present invention, selection may be performed according to materials actually used, without excluding scenes in which other materials are used.
In the embodiment of the invention, the hot sprue 1 is combined with the injection nozzle 4, and the first temperature control component is arranged to heat the hot sprue 1, so that the temperature is stable due to the heating effect of the hot sprue before the semi-solid magnesium alloy melt enters the die cavity, the temperature of the melt cannot be rapidly reduced when the melt passes through, larger flow resistance cannot be caused, the filling difficulty of pouring is reduced, the temperature of the material flowing out of the hot sprue can be ensured to be kept and is easily transferred to the farthest position for filling, the probability of shrinkage of a product is greatly reduced, shrinkage cavities are avoided, and the quality of the product is greatly improved finally.
According to the pouring gate injection device provided by the embodiment of the invention, through the accurate control of the temperature of the hot pouring head, the alloy material in the hot pouring head is always in the semi-solid state, and during production, after a product is separated from the hot pouring head, the semi-solid alloy in the hot pouring head cannot overflow outwards, but can be kept in the semi-solid state to form the semi-solid plug, and the semi-solid plug is kept in the hot pouring head and is prepared to be injected in the next mold for filling the mold cavity, so that the product quality problem or the safety problem caused by the leakage and splashing of the alloy is avoided.
In an embodiment of the present invention, as shown in fig. 2, which is a schematic structural diagram of a hot runner provided in an embodiment of the present invention, the first temperature control assembly 3 includes:
a first thermocouple 31, the first thermocouple 31 being disposed on an outer wall of the hot runner 1; and
and a first heating ring 32, wherein the first heating ring 32 is wound outside the hot topping 1.
In the embodiment of the present invention, the first thermocouple 31 is mainly used for measuring the temperature of the hot runner 1, so as to control the heating power of the first heating coil according to the temperature condition, thereby controlling the temperature of the material flowing inside the hot runner 2, further ensuring that the alloy material in the hot runner 1 is always in a semi-solid state, and ensuring smooth pouring and good pouring effect.
The thermocouple and the heating ring belong to temperature measuring and heating components commonly used in the field, and can be selected or customized from the market according to actual needs by those skilled in the art, and further detailed description thereof is omitted here. Meanwhile, it can be understood that the circuit connection design of the thermocouple and the heating coil is a simple conventional design, and only the thermocouple and the heating coil need to be ensured to be powered, and the thermocouple and the heating coil are not further illustrated and described herein, and a person skilled in the art can simply design the thermocouple and the heating coil according to actual conditions.
In the embodiment of the invention, the cross section diameter of the runner port of the hot runner 2 towards one side of the pouring direction changes from small to large along the pouring direction. So that the product cooled to solid state can be smoothly separated from the hot runner head 1 at the position where the material is poured when the mould is demolded after the pouring is finished.
In the present embodiment, a cooling ring 8 is provided externally at the junction between the injection nozzle 4 and the hot runner 1.
In the embodiment of the present invention, as shown in fig. 3 to 4, which are schematic diagrams of a three-dimensional structure and a schematic diagram of a cross-sectional structure of a cooling ring provided in the embodiment of the present invention, a third thermocouple 9 is disposed on an outer wall of the cooling ring 8, and a channel 10 is disposed inside the cooling ring 8, and the channel is used for introducing gas or liquid, so that the cooling ring 8 controls a temperature of a connection portion between the injection nozzle 4 and the hot runner 1.
The cooling ring 8 is arranged at the joint of the hot sprue 1 and the injection nozzle 4, on one hand, the cooling ring serves as a connecting piece of the hot sprue 1 and the injection nozzle 4 and is in clearance fit with the hot sprue 1 and the injection nozzle 4; on the other hand, the cooling ring 8 is internally provided with a channel 10 and the third thermocouple 9 is arranged on the outer wall, and the cooling ring is cooled by introducing air or water into the channel, so that the temperature of the joint of the hot runner head 1 and the injection nozzle 4 is reduced, the temperature is reduced to ensure that the part of the joint is matched to shrink, the magnesium alloy melting stock is difficult to overflow from the matched part, and the effects of material sealing and leakage prevention are achieved.
In an embodiment of the present invention, as shown in fig. 5, a schematic structural diagram of a sprue gate injection apparatus in another embodiment provided in an embodiment of the present invention further includes:
and the bushing 5 is sleeved along the extension of the outer part of the hot topping 1, the outer part of the cooling ring 8 and the outer part of the front end of the injection nozzle 4 and is used for detachably and fixedly arranging the front ends of the hot topping 1, the cooling ring 8 and the injection nozzle 4 at the pouring gate of the mold.
As shown in fig. 5, the bush 5 may be designed to be a combination of a sprue bush 51 and a gate bush 52, and functions to fix the hot runner, the cooling ring and the injection nozzle tip to the mold, the sprue bush 51 serving as an auxiliary part between the hot runner and the mold cavity for connecting the hot runner 2 of the hot runner 1 with the mold cavity, so that the semi-solid magnesium alloy melt can smoothly flow into the interior of the mold cavity, and the sprue bush 51 may adjust the extrusion stress of the parting surface by controlling its thickness (S-dimension in fig. 5), thereby preventing the parting surface from leaking.
Specifically, since the hot runner 1 needs to be heated to about 600 ℃ during operation (in the case of magnesium alloy casting), a certain gap (X dimension in fig. 5) is left between the front section of the hot runner 1 and the inner side of the sprue bushing 51 in order to compensate for the increased axial length of the hot runner 1 due to thermal expansion and to prevent the sprue bushing 51 from being expanded.
In the embodiment of the present invention, the material blocking member 6 is provided between the bushing 5 and the injection nozzle 4, so that a risk of ignition due to leakage of the magnesium alloy melt can be prevented.
In the embodiment of the present invention, a second temperature control assembly 7 is disposed on the outer side of the injection nozzle 4, and the second temperature control assembly 7 includes:
a second thermocouple 71, the second thermocouple 71 being disposed on an outer wall of the injection nozzle 4; and
and a second heat generation ring 72, wherein the second heat generation ring 72 is wound outside the injection nozzle 4.
Wherein the second thermocouple and the second heating coil mainly control the temperature of the melt flowing through the injection nozzle 4 to prevent the melt from solidifying at the injection nozzle 4 to cause blockage.
Example 2
Another object of an embodiment of the present invention is to provide a gating system, as shown in fig. 6, including:
a pouring mould 11, wherein a pouring gate 12 is arranged on the pouring mould;
in the gate injection device 13 of the above embodiment, the end of the hot runner 1 of the gate injection device 13 is inserted into the gate 12 so that the runner port of the hot runner 2 is close to the cavity of the casting mold 11.
Compared with the common nozzle injection mode, the pouring system provided by the embodiment of the invention can reduce most cold runners when a mould is designed, can save 30-50% of mould materials, does not need subsequent processing for cutting off water gap materials, and reduces the recovery cost; the state of the molten material entering the die is controlled through the hot runner, so that point pouring is realized, the temperature and the pressure of the material in the die cavity are uniform, the deformation of large and thin parts is improved, the flow length ratio of the die cavity is reduced, the filling is easier to complete, and the condition of under-injection at the tail end of a product is reduced. The pouring temperature can be strictly controlled, so that the quality of the semi-solid melting material is effectively controlled; in addition, the hot casting head can realize standardization, various different length specifications and outlet diameter specifications can be selected and matched according to different mold depths and product structures, and the interchangeability is good.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention. It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A gate injection device, comprising:
the hot pouring head is internally provided with a hot pouring gate;
a first temperature control assembly disposed on an outer side of the hot runner for controlling the temperature of the hot runner; and
and the injection nozzle is connected with one end of the hot sprue, and the other end of the hot sprue is connected with a mold cavity of the mold.
2. The sprue injection apparatus of claim 1 wherein the first temperature control assembly comprises:
a first thermocouple disposed on an outer wall of the hot topping; and
the first heating ring is wound outside the hot pouring head.
3. The sprue injection apparatus of claim 1 wherein the hot runner has a sprue cross-sectional diameter on a side thereof facing in the casting direction that varies from small to large along the casting direction.
4. The sprue injection apparatus of claim 1 wherein a cooling ring is provided externally of the connection between the injection nozzle and the hot sprue.
5. The sprue injection apparatus of claim 4 wherein a third thermocouple is located on the outer wall of the cooling ring and a channel is located inside the cooling ring for the passage of gas or liquid to allow the cooling ring to control the temperature at the junction between the injection nozzle and the hot runner.
6. The sprue injection apparatus of claim 4 further comprising: the bushing is sleeved along the extension outside the hot pouring head, the cooling ring and the front end of the injection nozzle and used for detachably and fixedly arranging the hot pouring head, the cooling ring and the front end of the injection nozzle at a pouring gate of a mold.
7. The sprue injection apparatus of claim 6 wherein a dam is positioned between the liner and the injection nozzle.
8. The sprue injection apparatus of claim 1 wherein a second temperature control assembly is disposed on an outside of the injection nozzle, said second temperature control assembly comprising:
a second thermocouple disposed on an outer wall of the injection nozzle; and
and the second heating ring is wound outside the injection nozzle.
9. A gating system, comprising:
the casting mold is provided with a casting port;
a gate injection device according to any one of claims 1 to 8, said hot runner end being inserted into said gate so that the mouth of said hot runner is adjacent to said casting mould cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010178724.0A CN111360229A (en) | 2020-03-15 | 2020-03-15 | Sprue gate injection device and gating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010178724.0A CN111360229A (en) | 2020-03-15 | 2020-03-15 | Sprue gate injection device and gating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111360229A true CN111360229A (en) | 2020-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010178724.0A Pending CN111360229A (en) | 2020-03-15 | 2020-03-15 | Sprue gate injection device and gating system |
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| CN (1) | CN111360229A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113941696A (en) * | 2020-07-17 | 2022-01-18 | 广东伊之密精密机械股份有限公司 | Multi-sprue injection device and pouring system |
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| CN1337286A (en) * | 2000-08-09 | 2002-02-27 | 日精树脂工业株式会社 | Method for supplying material and melting in injection-mould casting of metal materials |
| JP3502792B2 (en) * | 1999-08-03 | 2004-03-02 | 株式会社日本製鋼所 | Nozzle cover of metal injection molding machine |
| CN1649687A (en) * | 2002-05-01 | 2005-08-03 | 高田株式会社 | Injection molding method and apparatus with base mounted feeder |
| CN1750895A (en) * | 2003-03-06 | 2006-03-22 | 赫斯基注射器成型系统有限公司 | injection device |
| CN1953860A (en) * | 2004-05-17 | 2007-04-25 | 赫斯基注射器成型系统有限公司 | Method and apparatus for coupling melt conduits in a molding system and/or a runner system |
| DE102016006460A1 (en) * | 2015-06-02 | 2016-12-08 | Gerhard Schoch | Low energy nozzle, for a hot chamber die casting machine |
| CN110494266A (en) * | 2017-04-04 | 2019-11-22 | 艾姆弗勒克斯有限公司 | The determination of non-temporal dependence in the mould of preparation state is discharged in injection molded |
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2020
- 2020-03-15 CN CN202010178724.0A patent/CN111360229A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3502792B2 (en) * | 1999-08-03 | 2004-03-02 | 株式会社日本製鋼所 | Nozzle cover of metal injection molding machine |
| CN1337286A (en) * | 2000-08-09 | 2002-02-27 | 日精树脂工业株式会社 | Method for supplying material and melting in injection-mould casting of metal materials |
| CN1649687A (en) * | 2002-05-01 | 2005-08-03 | 高田株式会社 | Injection molding method and apparatus with base mounted feeder |
| CN1750895A (en) * | 2003-03-06 | 2006-03-22 | 赫斯基注射器成型系统有限公司 | injection device |
| CN1953860A (en) * | 2004-05-17 | 2007-04-25 | 赫斯基注射器成型系统有限公司 | Method and apparatus for coupling melt conduits in a molding system and/or a runner system |
| DE102016006460A1 (en) * | 2015-06-02 | 2016-12-08 | Gerhard Schoch | Low energy nozzle, for a hot chamber die casting machine |
| CN110494266A (en) * | 2017-04-04 | 2019-11-22 | 艾姆弗勒克斯有限公司 | The determination of non-temporal dependence in the mould of preparation state is discharged in injection molded |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113941696A (en) * | 2020-07-17 | 2022-01-18 | 广东伊之密精密机械股份有限公司 | Multi-sprue injection device and pouring system |
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Application publication date: 20200703 |