CN215467987U

CN215467987U - Die casting assembly and die casting equipment

Info

Publication number: CN215467987U
Application number: CN202121317627.1U
Authority: CN
Inventors: 谷承林
Original assignee: Shenzhen Shuocheng New Material Technology Co ltd
Current assignee: Shenzhen Shuocheng New Material Technology Co ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2022-01-11
Anticipated expiration: 2031-06-11

Abstract

The present invention provides a die cast assembly comprising: the casting mold unit and the injection unit are arranged in a split manner; the casting mold unit comprises a split mold, the split mold is provided with a cavity and a feeding gate connected with the cavity, the cavity is formed after all the modules are assembled, the feeding gate is arranged at the parting surface of the cavity, and the split mold is assembled in a mode of up-down assembling or left-right assembling; the injection unit comprises a containing cup for receiving feeding materials and an injection punch. The utility model further provides a die-casting device comprising the die-casting assembly. The die-casting assembly aims to solve the technical problems that the traditional die-casting assembly and die-casting equipment cannot meet the requirements of miniaturization and complicated metal die-casting manufacture.

Description

Die casting assembly and die casting equipment

Technical Field

The utility model belongs to the field of die-casting equipment, and particularly relates to a die-casting assembly and die-casting equipment comprising the same.

Background

"die casting", i.e. pressure casting, is an advanced process developed on the basis of the common casting technology. The metal die casting process is characterized in that molten metal is injected into a pressure chamber of die casting equipment in a liquid state, molten metal passes through a die casting system at a high speed under the action of high pressure generated by a punch through the movement of an injection punch (piston), a die cavity is filled with the molten metal, the molten metal starts to crystallize under the pressure, and the molten metal is rapidly cooled and solidified into a casting. Compared with the common casting, the casting manufactured by the die-casting process has the advantages of more compact internal structure, more excellent mechanical property, high dimensional precision and good surface quality. The die casting process plays an important role in the industrial fields of mechanical manufacturing, aerospace, automobile manufacturing, daily light industry and the like.

With the increasing demand for miniaturization and complication of metal parts, the traditional die casting equipment cannot meet the development trend, and the die casting equipment which can adapt to personalized design, is easier to control and has higher casting precision needs to be developed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a die-casting assembly, and aims to solve the technical problems that the traditional die-casting assembly and die-casting equipment cannot meet the requirements of miniaturization and complicated metal die-casting manufacture.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

one aspect of the present invention provides a die cast assembly comprising:

the casting mold unit and the injection unit are arranged in a split manner; the casting mold unit comprises a split mold, the split mold is provided with a cavity and a feeding gate connected with the cavity, the cavity is formed after all the modules are assembled, the feeding gate is arranged at the parting surface of the cavity, and the split mold is assembled in a mode of up-down assembling or left-right assembling; the injection unit comprises a containing cup for receiving feeding materials and an injection punch;

the die cast assembly is configured to: before feeding, the casting mould unit and the injection unit are arranged in a split mode; the feeding is molten alloy, and the feeding process is directly feeding to the injection end of the containing cup; after feeding, the casting mold unit and the injection unit move relatively to enable the containing cup of the injection unit to be communicated with the feeding gate, and the injection plunger head injects the feeding melt in the containing cup into the cavity through the feeding gate.

Furthermore, the injection unit comprises a containing cup and a push rod assembly, the push rod assembly comprises an injection punch head and a push rod which are connected, and the injection punch head is arranged in the containing cup and matched with the inner diameter of the containing cup.

Furthermore, the injection unit comprises a sleeve and an injection power mechanism, and the cup holding and push rod assembly is arranged in the sleeve.

Further, the injection power mechanism and the sleeve are arranged in the same atmosphere, or the injection power mechanism and the sleeve are arranged in different atmospheres.

Further, the injection unit further comprises an auxiliary heating device, and the auxiliary heating device is an induction heating device.

The feeding unit comprises one or more of a metering mechanism, an alloy heating mechanism, an electromagnetic pump feeding mechanism, a pneumatic feeding mechanism and a material pouring mechanism;

the feed unit is configured to: and pouring, pumping or pressing the alloy melt obtained by heating a certain amount of alloy raw materials into a cup containing injection end of the injection unit so as to finish feeding.

Further, the feeding unit, the injection unit and the casting mould unit are arranged in the same atmosphere environment; or two of the three are arranged in the same atmosphere environment; or the three are separated and arranged in different atmosphere environments.

Further, the injection molding machine further comprises a vacuum-pumping system, wherein a vacuum area covered by the vacuum-pumping system comprises the casting mold unit and the injection unit; or the vacuum area covered by the vacuum-pumping system comprises the injection unit, the feeding unit and the cavity; or the vacuum area covered by the vacuum-pumping system only comprises the injection unit and the feeding unit.

Further, the ratio of the number of the mold units to the number of the injection units is 1: (1-5).

The utility model further provides a die-casting device comprising the die-casting assembly.

The die-casting assembly provided by the utility model has great difference with the existing die-casting assembly, and the main difference points and the technical effects are as follows:

firstly, the casting mold unit and the injection unit are often installed on the same template or frame in the prior art, but the casting mold unit and the injection unit before feeding are arranged in a split mode, and meanwhile, the feeding process is directly fed to the injection end of the containing cup, so that the feeding speed of the injection unit is improved, the feeding stroke of the injection unit is reduced through further optimization design, the exposure of feeding molten liquid to the external environment (the external environment refers to the environment without the die-casting process) is reduced, and the influence of impurities and harmful gas (the harmful gas refers to the gas influencing a casting, such as the gas influencing the oxygen content of an alloy sensitive to the casting) on the casting process is reduced to the minimum.

Secondly, the utility model adopts a split type die, which can meet the structural design of more complex and smaller die-casting parts. By designing the feeding gate, a finished part which cannot be prepared by the die-casting equipment in the prior art can be prepared.

Drawings

FIG. 1 is a schematic structural view of a die cast assembly of the present invention;

FIG. 2 is a schematic structural view of a press unit in the die cast assembly of the present invention;

FIG. 3 is a schematic structural view of a mold unit and a shot unit in the present invention;

fig. 4 is another schematic structural view of the mold unit and the shot unit in the present invention.

Reference numerals:

100. an injection unit; 200. a mold unit; 300. a mode locking system;

101. 112, 115, 118, 121, a cup; 102. a cup-containing injection end; 103. 110, 113, 116, 119, an injection punch; 104. 111, 114, 117, 120, push rod; 105. a sleeve; 106. 107, a telescopic rod component; 108. a fixed seat; 109. an injection power mechanism;

201. 202, 203, 204, modules; 205. a cavity; 206. 207, a feeding gate;

211. 212, 213, 214, modules; 215. a cavity; 216. 217, a feeding gate.

Detailed Description

In order to make the objects, technical solutions and technical effects of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described, and the embodiments described below are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive step in connection with the embodiments of the present invention shall fall within the scope of protection of the present invention. Those whose specific conditions are not specified in the examples are carried out according to conventional conditions or conditions recommended by the manufacturer; the reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.

In the description of the present invention, the term "and/or" describing an association relationship of associated objects means that there may be three relationships, for example, a and/or B, may mean: a is present alone, A and B are present simultaneously, and B is present alone. Wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

In the description of the present invention, "at least one" means one or more, "a plurality" means two or more. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, "at least one (a), b, or c", or "at least one (a), b, and c", may each represent: a, b, c, a-b (i.e., a and b), a-c, b-c, or a-b-c, wherein a, b, and c may be single or plural, respectively.

It should be understood that the weight of the related components mentioned in the embodiments of the present invention may not only refer to the specific content of each component, but also represent the proportional relationship of the weight among the components, and therefore, it is within the scope of the disclosure that the content of the related components is scaled up or down according to the embodiments of the present invention. Specifically, the weight described in the embodiments of the present invention may be a unit of mass known in the chemical field such as μ g, mg, g, kg, etc.

In addition, unless the context clearly uses otherwise, an expression of a word in the singular is to be understood as including the plural of the word. The terms "comprises" or "comprising" are intended to specify the presence of stated features, quantities, steps, operations, elements, portions, or combinations thereof, but are not intended to preclude the presence or addition of one or more other features, quantities, steps, operations, elements, portions, or combinations thereof.

In order to further illustrate the usage of the die-casting assembly in the present invention during the actual operation, the embodiment of the present invention is also configured with an adaptive clamping system. As shown in fig. 1, the die casting assembly in embodiment 1 of the present invention includes a shot unit 100, a mold unit 200, and a mold locking system 300. The schematic diagram in example 1 is a schematic diagram while the die casting process is in progress, so that the injection unit, the mold unit, and the mold clamping system are combined as viewed from the drawing, and it is not contradictory to the aforementioned "split arrangement".

Further, the die-casting assembly provided in the embodiment of the present invention includes a mold unit and an injection unit that are separately provided.

Embodiment 2 as shown in fig. 2, there is provided a schematic view of the structure of a shot unit in a die cast assembly. Specifically, the injection unit comprises a cup container 101 and a push rod assembly, the push rod assembly comprises an injection punch 103 and a push rod 104 which are connected, and the injection punch 103 is arranged in the cup container 101 and is matched with the inner diameter of the cup container 101. The cup 101 and the shot punch 103 enclose a space 102 (cup shot end) for receiving the molten material. The injection unit further comprises a sleeve 105 and an injection power mechanism 109, and the cup holder 101 and the push rod assembly are arranged in the sleeve. In order to keep the pressing process of the injection unit stable and to further control the injection speed, a fixing base 108 and

telescopic rod assemblies

106 and 107 fixedly mounted on the fixing base 108 are further provided in the embodiment. The fixing seat 108 is disposed at the tail of the sleeve 105, and a through hole is formed in the middle for sleeving the main mechanism (the sleeve 105 and the push rod assembly and the cup holder mounted therein) of the injection unit and the injection power mechanism 109. The telescopic rod component is fixedly arranged on the side edge part of the telescopic rod component. The injection power mechanism can adopt common mechanical power mechanisms such as a hydraulic device, a pneumatic device and the like.

Although not explicitly shown in the drawings of the present embodiment, the die-casting assembly of the present invention may have various modifications according to actual use, for example, an auxiliary heating device may be further provided for the injection unit, for example, an induction heating device is adopted to prevent the material liquid from being jammed in the injection assembly and being unable to be injected when the feeding temperature is insufficient.

The casting mold unit comprises a split mold, the split mold is provided with a cavity and a feeding gate connected with the cavity, the cavity is formed after all modules are assembled, the feeding gate is arranged on the parting surface of the cavity, and the split mold is assembled in a mode of up-down assembling or left-right assembling.

As shown in fig. 3, embodiment 3 provides a structural schematic diagram of a mold unit and a shot unit which are closed up and down, namely, the mold closing mode is the mode of closing up and down, and similarly, the embodiment is similar to the embodiment shown in fig. 1 and shows a schematic diagram when the die casting process is in progress, so that the shot unit, the mold unit and the mold locking system are combined together when viewed from the figure, and the situation is not contradictory to the aforementioned "split arrangement". The split mold in the casting mold unit of embodiment 3 is composed of the mold blocks 201, 202, 203 and 204, and may be a three-split mold structure (for example, in this embodiment, the mold blocks 202 and 204 may be an integral module structure), or a multi-split mold structure. In actual operation, because the structural design of the multi-split mold is too complex, more mold structural designs adopting three split molds are adopted.

With reference to fig. 1, 2 and 3, the arrows indicate the direction of injection of the material, and the die-casting assembly is configured to: before the charging, the mold unit 200 is provided separately from the injection unit 100. The molten alloy is fed in a molten state, and the feeding process is directly to the cup receiving shot tip 102 (since the state in embodiment 3 is a shot process, the shot punch has pushed the molten alloy out of the shot tip, there is no "cup receiving shot tip" structure in fig. 3, but the position and features of this structure are clearly seen in fig. 2). After the material is fed, the mold unit 200 and the shot unit 100 move relatively to each other, so that the receiving cup 112 communicates with the feed gate 206 and the receiving cup 115 communicates with the feed gate 207, the plunger 111 drives the shot punch 110 to inject the molten material in the receiving cup 112 into the cavity 205 through the feed gate 206, and the plunger 114 drives the shot punch 113 to inject the molten material in the receiving cup 115 into the cavity 205 through the feed gate 207.

As shown in fig. 4, embodiment 4 provides a structural schematic diagram of a mold unit and a shot unit which are closed in a left-right mold closing mode, and similarly, the embodiment is similar to fig. 1 and shows a schematic diagram of a die casting process in progress, so that the shot unit, the mold unit and the mold clamping system are combined together as seen from the drawing, and here, too, the structure does not contradict the aforementioned "split arrangement". The split mold in the mold unit of embodiment 4 is composed of the

modules

211, 212, 213, and 214, and may be a three-split mold structure (for example, in this embodiment, the

modules

212 and 214 may be an integral module structure), or a multi-split mold structure.

With reference to fig. 1, 2 and 4, the arrows indicate the direction of injection of the material, and the die-casting assembly is configured to: before the charging, the mold unit 200 is provided separately from the injection unit 100. The molten alloy is fed in a molten state, and the feeding process is directly to the cup receiving shot tip 102 (since the state in embodiment 4 is a shot process, the shot punch has pushed the molten alloy out of the shot tip, there is no "cup receiving shot tip" structure in fig. 3, but the position and features of this structure are clearly seen in fig. 2). After feeding, the mold unit 200 and the injection unit 100 move relatively, so that the receiving cup 121 is communicated with the feeding gate 216, the receiving cup 118 is communicated with the feeding gate 217, the push rod 120 drives the injection punch 119 to inject the feeding melt in the receiving cup 121 into the cavity 215 through the feeding gate 216, and the push rod 117 drives the injection punch 116 to inject the feeding melt in the receiving cup 118 into the cavity 215 through the feeding gate 217.

In the feeding process in the above embodiment, the melt is directly poured out by gravity in the process of feeding the melt to the top of the injection end of the container cup, and an electromagnetic pump feeding device or an air pressure feeding device can be selected, so that the feeding process is quicker. These are all improvements in the inventive concept of the present invention, and can be designed preferably in the practical application.

The die-casting assembly in the embodiment adopts the split die, so that the structural design of a more complex and smaller die-casting part can be met. By designing the feeding gate, a finished part which cannot be prepared by the die-casting equipment in the prior art can be prepared.

The die-casting assembly in the embodiment is structurally improved, and can meet more manufacturing requirements. For example, the injection power mechanism and the sleeve may be disposed in the same atmosphere or in different atmospheres according to different manufacturing requirements.

For another example, in the processing technology of amorphous alloy, the processing process of a bulk amorphous part is preferably a die casting technology, which is currently commonly used as a vacuum die casting technology. By applying vacuum technology to the die cast component of the present invention, a die cast component suitable for processing amorphous alloys can be obtained. Another embodiment of the present invention is to add a vacuum pumping system (not shown) to the embodiments 1-4, and add a suitable feeding unit (not shown) to accommodate the die casting process of the amorphous alloy.

Specifically, the feeding unit may include one or a combination of more of a metering mechanism, an alloy heating mechanism, an electromagnetic pump feeding mechanism, a pneumatic feeding mechanism, and a material pouring mechanism. The feeding unit is configured to: and pouring, pumping or pressing the alloy melt obtained by heating a certain amount of alloy raw materials into a cup containing injection end of the injection unit so as to finish feeding.

Specifically, the vacuum pumping system can adopt a vacuum pump or other vacuum pumping equipment, and only equipment capable of meeting the vacuum degree requirement is purchased in the actual production process. The different module units can be separated by adopting a shell or a bin body structure, so that the vacuum pumping is convenient to separate. The vacuum area covered by the vacuum-pumping system comprises a casting mold unit and an injection unit; or the vacuum area covered by the vacuum-pumping system comprises the injection unit, the feeding unit and the cavity; alternatively, the vacuum region covered by the vacuum pumping system includes only the injection unit and the feeding unit.

It should be clear that, in practical applications, in order to meet different production requirements, the feeding unit, the injection unit and the casting module may be disposed in the same atmosphere (vacuum environment or inert atmosphere), or only the three may be disposed in a vacuum region; or, two of the three are arranged in the same atmosphere (vacuum environment or inert atmosphere); or, the three are separated and set in different atmosphere environments (vacuum environment or inert atmosphere environment). In the production process of some special parts, matching systems such as a mold locking system and the like can be simultaneously brought into a vacuum area if required. The different options described above do not have absolute advantages or disadvantages, depending on the requirements of the actual production. The advantage of independently setting the vacuum areas and independently controlling the vacuum areas is that the volume of each independent vacuum area is small, so that the time consumed by vacuum pumping can be reduced, meanwhile, the requirements on the vacuum degrees of different process sections are different, the vacuum degrees of all the sections can meet the respective requirements by separate control, the unified vacuum degree of all the areas is not required, and the problem is brought to the efficiency of a vacuum pumping system (the vacuum pumping time is prolonged, the larger the space is, the larger the power requirement of the vacuum pumping system is, and the higher the energy consumption is).

Still further, depending on the complexity of the castings being produced, multiple injection units may be used to accomplish the complex mold filling by feeding from different in-gate ports, i.e., multiple injection units. In actual operation, the ratio of the number of the mold units to the number of the injection units is 1: (1-5) is preferable. In each of the embodiments 3 and 4, a structure in which 2 shot units correspond to 1 mold unit is employed. Too many injection units are not only difficult to control the vacuum degree, but also complicated to operate, and are not suitable for large-scale industrial production.

The embodiment of the utility model also provides die-casting equipment using the die-casting assembly in the embodiment, namely the die-casting assembly is used for replacing the die-casting assembly in the existing die-casting machine.

The die-casting method adopting the die-casting equipment in the embodiment of the utility model comprises the following steps:

s01, initial state: the casting mould unit and the injection unit are arranged in a split mode and are respectively located at initial positions, and the casting mould unit is in a mould closing state;

s02, feed: the raw materials are sent into the containing cup of the injection unit in the state of alloy melt, and the alloy melt is fed from the injection end of the containing cup of the injection unit;

s03, shot: the injection unit and the casting mould unit move relatively, so that the containing cup of the injection unit is communicated with the feeding gate of the casting mould unit, and the injection punch of the injection unit injects the alloy melt in the containing cup into the cavity of the casting mould unit;

s04, taking: and (5) forming the casting, taking the casting mold unit in a mold opening state, and taking the casting.

In the case of vacuum die casting, at least the injection unit and the feed unit are in a vacuum environment or an inert atmosphere during the above-mentioned processing, wherein the vacuum environment means an absolute vacuum degree of 10 or less³Pa。

The utility model adopts the split die, which can meet the structural design of more complex and smaller die-casting parts. By designing the feeding gate, a finished part which cannot be prepared by the die-casting equipment in the prior art can be prepared. The die casting equipment realizes the high-vacuum forming mode in the whole process of smelting, injection and forming, and is a great improvement on the basis of the prior die casting equipment.

It should be clear that, in the present invention and the embodiments thereof, the matching structure of the die-casting component in the present invention is described and illustrated by using "mechanism", "device", "structure", and the like, and in the practical application, a person skilled in the art may use a corresponding mechanical structure, mechanical device, combination of mechanical structures or devices according to the prior art as long as the technical purpose mentioned in the present invention can be met.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. Die-casting subassembly, its characterized in that includes:

the casting mold unit and the injection unit are arranged in a split manner;

the casting mold unit comprises a split mold, the split mold is provided with a cavity and a feeding gate connected with the cavity, the cavity is formed after all the modules are assembled, the feeding gate is arranged at the parting surface of the cavity, and the split mold is assembled in a mode of up-down assembling or left-right assembling;

the injection unit comprises a containing cup for receiving feeding materials and an injection punch;

2. The die cast assembly of claim 1, wherein: the injection unit comprises a containing cup and a push rod assembly, the push rod assembly comprises an injection punch head and a push rod which are connected, and the injection punch head is arranged in the containing cup and matched with the inner diameter of the containing cup.

3. The die cast assembly of claim 2, wherein: the injection unit comprises a sleeve and an injection power mechanism, and the cup holding and push rod assembly is arranged in the sleeve.

4. The die cast assembly of claim 3, wherein: the injection power mechanism and the sleeve are arranged in the same atmosphere environment, or the injection power mechanism and the sleeve are arranged in different atmosphere environments.

5. The die cast assembly of claim 2, wherein: the injection unit further comprises an auxiliary heating device, and the auxiliary heating device is an induction heating device.

6. The die cast assembly of claim 1, wherein: the feeding unit comprises one or more of a metering mechanism, an alloy heating mechanism, an electromagnetic pump feeding mechanism, an air pressure feeding mechanism and a material pouring mechanism;

7. The die cast assembly of claim 6, wherein: the feeding unit, the injection unit and the casting mould unit are arranged in the same atmosphere environment; or two of the three are arranged in the same atmosphere environment; or the three are separated and arranged in different atmosphere environments.

8. The die cast assembly of claim 6, wherein: the vacuum casting device further comprises a vacuum-pumping system, and a vacuum area covered by the vacuum-pumping system comprises the casting mould unit and the injection unit; or the vacuum area covered by the vacuum-pumping system comprises the injection unit, the feeding unit and the cavity; or the vacuum area covered by the vacuum-pumping system only comprises the injection unit and the feeding unit.

9. The die cast assembly of any of claims 1-8, wherein: the ratio of the number of the casting mold units to the number of the injection units is 1: (1-5).

10. Die casting apparatus comprising a die casting assembly as claimed in any one of claims 1 to 9.