CN212285810U

CN212285810U - Sprue gate injection device and gating system

Info

Publication number: CN212285810U
Application number: CN202020316010.7U
Authority: CN
Inventors: 梁启华; 陈冲; 吴振波
Original assignee: Guangdong Yizumi Precision Machinery Co Ltd
Current assignee: Yizhimi Co ltd
Priority date: 2020-03-15
Filing date: 2020-03-15
Publication date: 2021-01-05
Anticipated expiration: 2030-03-15

Abstract

The utility model discloses a sprue gate injection device and gating 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. The embodiment of the utility model provides a pair of sprue gate injection apparatus, through the accurate control to hot pouring head temperature, alloy material in the hot pouring head is in semi-solid state always, during production, goods and hot pouring head separation back, semi-solid alloy in the hot pouring head can not outwards spill over, and can keep semi-solid state, form semi-solid stopper, be kept in hot pouring head, prepare to be used for filling the die cavity at next mould injection, avoided revealing of alloy to splash the goods quality problems or the safety problem that causes.

Description

Sprue gate injection device and gating system

Technical Field

The utility model belongs to the technical field of the alloy pouring, especially, relate to a sprue gate injection device and gating 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.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sprue gate injection device aims at solving the transformation that the pouring equipment among the prior art is difficult to guarantee the alloy state when carrying out the alloy pouring, leads to pouring to accomplish the back alloy melt and draws out the problem that the seepage splashes along with the pouring equipment easily.

The embodiment of the utility model provides a realize like this, a sprue gate injection device, include:

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 topping, the other end of the hot topping is connected with a mold cavity of a mold, a second temperature control assembly is arranged on the outer side of the injection nozzle, and a cooling ring is arranged outside the joint between the injection nozzle and the hot topping.

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 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, 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 embodiments of the present invention is to provide a gating system, including:

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.

The embodiment of the utility model provides a pair of sprue gate injection apparatus, through the accurate control to hot pouring head temperature, alloy material in the hot pouring head is in semi-solid state always, during production, goods and hot pouring head separation back, semi-solid alloy in the hot pouring head can not outwards spill over, and can keep semi-solid state, form semi-solid stopper, be kept in hot pouring head, prepare to be used for filling the die cavity at next mould injection, avoided revealing of alloy to splash the goods quality problems or the safety problem that causes.

Drawings

Fig. 1 is a schematic structural diagram of a sprue gate injection device according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a hot runner 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 schematic 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

In order to better understand the technical solution, the present invention is further described in detail below with reference to the drawings and the embodiments of the specification. 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, for the embodiment of the present invention provides a structure diagram of a sprue gate injection device, the embodiment of the present invention is implemented as such, a sprue gate injection device, including:

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

the injection nozzle 4, the injection nozzle 4 is connected with the one end of hot runner 1, and the other end of hot runner 1 is connected the mould die cavity, is provided with second temperature control component 7 on the injection nozzle 4 outside, and the junction outside is provided with cooling ring 8 between injection nozzle 4 and the hot runner 1, and injection nozzle 4 is used for pouring the casting material through hot runner.

The embodiment of the utility model provides an in, mainly explain with the magnesium alloy pouring as the example in the utility model discloses a can select according to the material of actual effect in other embodiments to do not get rid of the scene that other materials used.

The embodiment of the utility model provides an in, through the mode that will heat the head 1 and combine with injection nozzle 4, set up first temperature control subassembly simultaneously and heat the head 1, before making semi-solid magnesium alloy melt will get into the die cavity, through the heating effect of hot head, make the temperature stable, the melt temperature can not descend rapidly through the time, can not cause great flow resistance, the packing degree of difficulty of pouring has been reduced, the material that can guarantee simultaneously that hot head flows can keep the temperature, reach the packing farthest department easily, can make the probability greatly reduced that the goods produced the shrink like this, avoid forming the shrinkage cavity, finally, make the goods quality improve greatly.

In the embodiment of the present invention, as shown in fig. 2, for the embodiment of the present invention provides a structural schematic diagram of a hot runner, a 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.

The embodiment of the utility model provides an in, first thermocouple 31 mainly used measures the temperature of hot runner 1 to according to the heating power of the first heating coil of temperature condition control, thereby reach the temperature of the material of controlling the inside circulation of hot runner 2, and then guarantee that the alloy material in the hot runner 1 is in semi-solid state always, guarantee that the pouring is smooth and easy and pouring is effectual.

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 present invention, the diameter of the cross section of the runner port of the hot runner 2 toward 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 embodiment of the present invention, a cooling ring 8 is disposed outside the connection between the injection nozzle 4 and the hot runner 1.

In the embodiment of the present invention, as shown in fig. 3-4, for the embodiment of the present invention provides a three-dimensional structure diagram and a sectional structure diagram of a cooling ring, a third thermocouple 9 is disposed on the outer wall of the cooling ring 8, and a channel 10 is disposed inside the cooling ring 8, the channel is used for introducing gas or liquid, so that the cooling ring 8 controls the temperature of the connection between the injection nozzle 4 and the hot runner head 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 the embodiment of the present invention, as shown in fig. 5, a schematic structural diagram of a sprue gate injection device in another embodiment provided in the 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 as to prevent the dangerous situation of ignition and combustion caused by leakage of the magnesium alloy melt.

In the embodiment of the present invention, a second temperature control assembly 7 is disposed on the outside 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 the embodiments 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 utility model can reduce a large part of cold runners when designing the mould, can save 30 to 50 percent of mould materials, does not need to cut off the processing of the nozzle materials subsequently, 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 exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

While the 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. It is therefore intended that the appended claims be interpreted as including the preferred embodiment 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 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 and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A gate injection device, comprising:

the hot pouring head is internally provided with a hot pouring gate;

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 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.

5. The sprue injection apparatus of claim 1 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.

6. The sprue injection apparatus of claim 5 wherein a dam is positioned between the liner and the injection nozzle.

7. The sprue injection apparatus of claim 1 wherein the second temperature control assembly comprises:

a second thermocouple disposed on an outer wall of the injection nozzle; and

and the second heating ring is wound outside the injection nozzle.

8. 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 7, said hot runner end being inserted into said gate so that the mouth of said hot runner is adjacent to said casting mold cavity.