CN221848606U - A die casting mold for complex workpieces - Google Patents

Abstract

The utility model discloses a die-casting mold for complex workpieces, including a lower template, an upper template and a runner, the upper template is arranged above the lower template, and upper and lower mold cavities are respectively embedded in the upper and lower templates to form a mold cavity as a whole, a workpiece forming insert is arranged between the mold cavity as a whole, and the workpiece forming insert and the mold cavity as a whole constitute a workpiece forming mold cavity; the runner runs through the top center of the upper template, and a plurality of branch flow channels are arranged to communicate with the workpiece forming cavity; a slag cavity is arranged around one side of the lower mold cavity, the slag cavity is connected to the lower mold cavity, and one side of the slag cavity is connected to an exhaust channel, and the exhaust channel is arranged between the upper and lower templates. A complete die-casting cavity is formed by arranging a core insert and a forming insert, so that a complex workpiece can be formed in one piece, and the strength of the workpiece is improved, and a plurality of slag cavities and discharge channels are arranged around the lower mold cavity, so that the slag will not be blocked at the end of the mold cavity, thereby ensuring the forming strength and surface flatness of the workpiece.

Description

A die casting mold for complex workpieces

Technical Field

The utility model relates to the technical field of metal die-casting molds, in particular to a die-casting mold for complex workpieces.

Background Art

The die-casting mold is a tool that keeps the high-pressure molten metal in shape during metal casting. It is an important process equipment in die-casting production. It plays an extremely important role in whether the production can proceed smoothly and the quality of the castings. It is widely used in various metal forming.

In actual production, it is necessary to realize die-casting of some complex structures or surface patterns. When using traditional two-plate die-casting molds to form workpieces with complex structures, the workpiece needs to be divided into two halves for independent forming, and then the two independent halves are bonded or welded. The process is complicated and can easily cause damage to the workpiece; especially for complex workpieces with irregular protrusions at the end of the structure, or with stacked structures, when the workpiece is formed, the front flow material will cool in advance to form slag. When the surface shape of the workpiece is complex and the structure at the end of the forming cavity is irregular, the slag is prone to be difficult to discharge, resulting in inconsistent strength and forming conditions in various parts of the workpiece, affecting the quality of the workpiece, and then causing problems of difficult and uneven forming. Therefore, the present application has innovated and improved the die-casting mold for complex workpieces in response to the above problems.

Utility Model Content

The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

In view of the above-mentioned problems existing in the existing die-casting molds, the utility model is proposed. The technical problem solved by the utility model is that the existing die-casting molds need to be divided into two halves for independent forming during forming, the process is complicated and easy to be damaged. In addition, the slag in the mold is not easy to discharge, which will cause problems of difficult and uneven forming, affecting the quality of the workpiece.

In order to solve the above technical problems, the utility model provides the following technical solutions: a die-casting mold for complex workpieces comprises a lower template, an upper template and a runner, the upper template is arranged above the lower template, the top of the lower template is embedded with a lower mold cavity, the bottom of the upper template is embedded with an upper mold cavity, the upper mold cavity and the lower mold cavity together constitute a mold cavity as a whole, a workpiece forming insert is arranged between the mold cavities as a whole, and a workpiece forming mold cavity is constituted between the workpiece forming insert and the mold cavity as a whole; the runner passes through the center of the top of the upper template, and a plurality of branch flow channels are arranged according to the shape of the workpiece and are connected to the workpiece forming cavity; a slag cavity is arranged around one side of the lower mold cavity, the slag cavity is communicated with the lower mold cavity, one side of the slag cavity is connected to an exhaust channel, and the exhaust channel is arranged between the lower template and the upper template.

As a preferred solution of the die-casting mold for complex workpieces described in the utility model, wherein: the workpiece forming insert includes a core insert and a forming insert that are relatively positioned, a workpiece forming surface is arranged on the side of the forming insert, there is a certain distance between the workpiece forming surface and the core insert, and the distance is communicated with the lower mold cavity and the upper mold cavity, together forming the workpiece forming mold cavity, and the branch flow channel is communicated with the lower mold cavity, the upper mold cavity and the workpiece forming surface.

As a preferred solution of the die-casting mold for complex workpieces described in the utility model, wherein: the lower mold cavity also includes a plurality of forming concave surfaces, and the plurality of forming concave surfaces are all arranged on the lower mold plate below the core insert and the forming insert, and the plurality of forming concave surfaces are connected to each other, and the edge of the workpiece forming surface abuts against the forming concave surface, and the shapes match each other.

As a preferred solution of the die-casting mold for complex workpieces described in the utility model, the slag cavity is connected to the lower mold cavity through a discharge channel, and in the lower mold cavity, the end of each forming concave surface away from the side of the runner is connected to a discharge channel.

As a preferred solution of the die-casting mold for complex workpieces described in the utility model, wherein: the shape of the slag cavity matches the shape of the workpiece, the slag cavity is provided with multiple discharge channels, each of the slag cavities is connected to adjacent discharge channels, and the multiple slag cavities are connected to each other.

As a preferred solution of the die-casting mold for complex workpieces described in the utility model, wherein: the exhaust channel can also be embedded in the end face of the lower mold plate in contact with the upper mold plate, and pass through the side of the lower mold plate, and the cross-sectional area of the exhaust channel close to one end of the slag cavity is larger than the cross-sectional area away from the one end of the slag cavity.

As a preferred solution of the die-casting mold for complex workpieces described in the utility model, wherein: a mold opening groove is provided at the bottom of the core insert, and the mold opening groove is provided at the end of the core insert away from the lower mold plate; a mold opening groove is also provided at the bottom of the forming insert, and the mold opening groove is provided at the end of the forming insert away from the lower mold plate.

As a preferred solution of the die-casting mold for complex workpieces described in the utility model, a cooling water circuit is arranged in the lower mold plate, and the cooling water circuit includes a coolant inlet and a coolant circuit. The coolant inlet is opened on the side of the lower mold plate, and the coolant circuit is arranged to extend from the side of the lower mold plate away from the forming cavity to the bottom of the lower mold cavity.

As a preferred solution of the die-casting mold for complex workpieces described in the utility model, a cooling water circuit is also arranged in the upper mold plate, the coolant inlet is opened on the side of the upper mold plate, and the coolant circuit is arranged to extend from the side of the upper mold plate away from the forming cavity to the top of the upper mold cavity.

As a preferred solution of the die-casting mold for complex workpieces described in the utility model, wherein: the forming concave surface and the exhaust channel arranged in the upper mold cavity and the lower mold cavity are arranged correspondingly.

The advantages of the die-casting mold for complex workpieces constructed by the utility model are as follows:

(1) The present application forms a complete die-casting cavity by providing a core insert and a forming insert, so that a complex workpiece can be formed in one piece, the strength of the workpiece is improved, and the flow channel is introduced into the upper and lower die cavities and the workpiece forming surface to meet the mold flow standard of the workpiece die casting;

(2) By arranging a plurality of slag cavities and discharge channels around the lower die cavity, and arranging the discharge channels on the side away from the runner, the slag will not be blocked at the end of the die cavity, thereby ensuring the forming strength and surface smoothness of the workpiece.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

FIG1 is a schematic diagram of the overall structure of a die-casting mold for a complex workpiece according to an embodiment of the present invention;

FIG2 is a schematic side view of the structure of a die-casting mold for a complex workpiece according to an embodiment of the present invention;

FIG3 is a schematic structural diagram of a lower mold plate of a die-casting mold for a complex workpiece according to an embodiment of the present invention;

FIG. 4 is an enlarged structural schematic diagram of a feather forming concave surface of a die-casting mold for a complex workpiece according to an embodiment of the present invention.

The markings of the components in the accompanying drawings are as follows: lower template -1, lower mold cavity -2, upper template -3, upper mold cavity -4, core insert -5, forming insert -6, workpiece forming surface -7, runner -8, branch runner -81; forming concave surface -21, slag cavity -9, exhaust channel -10, discharge channel -91, cooling water channel -11, mold groove -12.

DETAILED DESCRIPTION

In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the utility model, but not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary persons in the field without creative work should fall within the scope of protection of the utility model.

In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

The utility model is described in detail with reference to the schematic diagram. When describing the embodiments of the utility model, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagrams are only examples, which should not limit the scope of protection of the utility model. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

At the same time, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, inner and outer" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first, second or third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

In the present utility model, unless otherwise clearly specified and limited, the terms "install, connect, connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integrated connection; it can also be a mechanical connection, an electrical connection or a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two original components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

1 to 4, the embodiment provides a die-casting mold for a complex workpiece, including a lower mold plate 1, an upper mold plate 3 and a runner 8, the upper mold plate 3 is arranged directly above the lower mold plate 1, a lower mold cavity 2 is embedded in the top of the lower mold plate 1, an upper mold cavity 4 is embedded in the bottom of the upper mold plate 3, the upper mold cavity 4 cooperates with the lower mold cavity 2, and the two together constitute a complete mold cavity, a workpiece forming insert is arranged between the cavity formed by the lower mold cavity 2 and the upper mold cavity 4, the workpiece forming insert includes two relatively arranged core inserts 5 and a forming insert 6, which are used to realize the forming of the workpiece, wherein the core insert 5 abuts against the forming insert 6, and a workpiece forming surface 7 is arranged on the side of the forming insert 6, and in addition, the lower mold cavity 2 also includes a plurality of forming concave surfaces 21, the plurality of forming concave surfaces 21 are arranged on the lower mold plate 1 below the core insert 5, and the plurality of forming concave surfaces 21 are connected to each other, the upper mold cavity 4 has the same structure as the lower mold cavity 2, and the lower mold cavity 4 also includes The mold comprises a plurality of forming concave surfaces 21, which are arranged on the upper mold plate 1 above the core insert 5. In addition, since the forming insert 6 is arranged in the middle of the upper mold cavity 4 and the lower mold cavity 2, the workpiece forming surface 7 on the forming insert 6 abuts against the forming concave surfaces 21 in the upper and lower mold cavities and their shapes match each other, together forming a complete forming mold cavity. A runner 8 is arranged through the top center of the upper mold plate 3, and the runner 8 is connected to the lower mold cavity 2, the upper mold cavity 4 and the workpiece forming surface 7. In the lower mold cavity 2 and the upper mold cavity 4, the runner 8 is provided with a plurality of branch flow channels 81 according to the shape of the workpiece. The branch flow channels 81 are connected to the mold cavity at a certain interval according to the length and width of the forming mold cavity, and the metal material is poured into the forming concave surfaces 21 of the lower mold cavity 2 and the upper mold cavity 4 and the connected workpiece forming surface 7 to realize the forming of the workpiece. The setting of the plurality of branch flow channels 81 enables the casting material to flow evenly into the forming cavity to ensure the forming quality of the workpiece.

Furthermore, on one side of the lower mold cavity 2, a slag cavity 9 is arranged around the lower mold cavity, and there are multiple slag cavities 9, and the multiple slag cavities 9 are connected to each other, and multiple discharge channels 91 are arranged between the slag cavity 9 and the lower mold cavity 2, and the slag cavity 9 is connected to the lower mold cavity 2 through the discharge channel 91. In the lower mold cavity 2, each end of the forming concave surface 21 away from the side of the runner 8 is connected to a discharge channel 91, and the material entering the mold cavity is discharged from the discharge channel 91 of the forming concave surface 21 at the end. The material that first enters the mold cavity is cooled and solidified to form slag, and the slag is flushed to the forming concave surface 21 at the end by the material that enters the mold cavity later, and is discharged through the discharge channel 91 at the end, so as to avoid the slag remaining at the end of the mold cavity due to the irregular structure of the end of the complex workpiece. , affecting the forming effect, an exhaust channel 10 is connected to one side of the slag cavity 9, the exhaust channel 10 is embedded in the end face of the lower template 1 in contact with the upper template 3, and passes through the side of the lower template 1, and an exhaust channel 10 with the same structure as the lower template 1 is arranged in the upper template 3; in addition to the exhaust channel 10 being arranged in both the upper and lower templates, the exhaust channel 10 can also be arranged between the upper and lower templates, and the exhaust channel 10 located in the middle is connected to the slag cavity 9 in the upper and lower mold cavities, so as to achieve the exhaust effect, and the cross-sectional area of the exhaust channel 10 close to the slag cavity 9 is larger than the cross-sectional area of the end away from the slag cavity 9. Since the slag cavity 9 is connected to the lower mold cavity 2, that is, connected to the die-casting forming cavity, the cross-sectional area close to the inside of the cavity is larger, which is helpful to exhaust the air in the mold and improve the die-casting effect of the workpiece.

When using the die-casting mold of this embodiment to perform workpiece forming die-casting, taking a wing-shaped U-shaped part as an example, when forming the wing-shaped workpiece, the workpiece forming surface 7 set on the side of the forming insert 6 is set to a feather root forming shape, and the forming concave surface 21 located in the upper and lower mold cavities is set to a feather shape. Multiple forming concave surfaces 21 are stacked and connected, and the size of the feather forming concave surface 21 of the lower mold cavity 2 close to the runner 8 is smaller than the size of the feather forming concave surface 21 away from the runner 8. The workpiece forming surface 7 is a feather root, and the forming concave surfaces 21 in the upper and lower mold cavities are workpiece wings. The discharge channel 91 is connected to the end of each feather-shaped forming concave surface 21, away from the runner 8. When the workpiece is formed, the metal forming material is injected from the runner 8 in the center of the upper mold plate 3, and the runner 8 pours the material into the workpiece die-casting cavity formed by the upper and lower mold cavities and the workpiece forming surface 7. Due to the low temperature in the mold cavity Therefore, the metal material is cooled and formed, and the workpiece forming effect is achieved in the cavity. During the workpiece forming process, due to the decrease in temperature during the pouring of the metal material, the flow material at the front end will be cooled in advance to form slag. The slag cooled in advance will continue to flow into the mold cavity with the flowing metal material until it reaches the end of the mold cavity. Since the discharge channel 91 is connected to the end of the feather-shaped forming concave surface 21, the slag cooled in advance will be discharged from the discharge channel 91 at the end into the slag cavity 9. An exhaust channel 10 is also connected to one side of the slag cavity 9. When the metal material flows in the mold cavity, certain bubbles will be generated. The exhaust channel 10 is connected to the slag cavity 9. Since the gas temperature inside the mold cavity is relatively high, the mold cavity gas enters the exhaust channel 10 along the slag cavity 9 to achieve the exhaust effect, thereby avoiding air from being retained in the mold cavity to form bubbles and improving the surface quality of the workpiece.

It should be noted that, in the present embodiment, the structures of the forming concave surfaces 21 in the upper and lower mold cavities are the same. In order to ensure the symmetry of the workpiece, the forming insert 6 can be set in the middle position of the upper and lower mold cavities. If the workpiece structure is asymmetrical, the installation position of the forming insert 6 can be adjusted accordingly according to the shape of the workpiece. In addition, the die-casting of the wing-shaped U-shaped part used in the present embodiment is only one of the complex workpieces die-cast by the mold of the present application. When processing workpieces with other complex structures or patterns, the shape of the workpiece forming surface 7, the shape of the forming concave surface 21 and the connection method can be adjusted accordingly according to the specific shape of the workpiece. In addition, the connection position of the discharge channel 91 will also change in accordance with the shape of the workpiece. The feather-shaped pattern in this embodiment is only an illustrative example and does not limit the shape of the forming surface. In addition, the casting material of the workpiece can be plastic, gypsum and other materials in addition to metal materials. The die-casting mold of the present application can be suitable for workpieces of various materials and shapes.

In the embodiment, referring to FIG. 1 , a mold opening groove 12 is provided at the bottom of the core insert 5, and the mold opening groove 12 is provided at the end of the core insert 5 away from the lower mold plate 1. A mold opening groove 12 is also provided at the bottom of the forming insert 6, and the mold opening groove 12 is provided at the end of the forming insert 6 away from the lower mold plate 1. Since the core insert 5 and the forming insert 6 are relatively arranged, when the mold is opened, the mold opening grooves at the bottom of the core insert 5 and the forming insert 6 can provide space for the connection between the two inserts and the power source, and provide lateral mold opening force, so that the workpiece can be quickly separated from the mold when the mold is opened.

In the embodiment, referring to FIG3 , a cooling water channel 11 is provided in the lower template 1, the cooling water channel 11 enters from the side of the lower template 1, and the cooling water channel 11 extends from the side of the lower template 1 without a forming cavity to the bottom of the lower mold cavity 2. In addition, a cooling water channel 11 is also provided in the upper template 3, the cooling water channel 11 enters from the side of the upper template 3, and extends from the side of the upper template 3 without a forming cavity to the top of the upper mold cavity 4. The cooling water channel 11 extends to the upper and lower mold cavities, which can provide a rapid cooling function for the mold, quickly cool the workpiece, and improve the processing efficiency.

It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims (10)

1. The utility model provides a die casting die for complicated work piece, includes lower bolster (1), cope match-plate pattern (3) and runner (8), its characterized in that:

The upper die plate (3) is arranged above the lower die plate (1), a lower die cavity (2) is embedded at the top of the lower die plate (1), an upper die cavity (4) is embedded at the bottom of the upper die plate (3), the upper die cavity (4) and the lower die cavity (2) together form a die cavity whole, a workpiece forming insert is arranged between the die cavity whole, and a workpiece forming die cavity is formed between the workpiece forming insert and the die cavity whole;

The pouring channel (8) penetrates through the center of the top of the upper die plate (3), and a plurality of branch channels (81) are arranged according to the shape of a workpiece and are communicated with the workpiece forming cavity;

One side of the lower die cavity (2) is surrounded by a slag cavity (9), the slag cavity (9) is communicated with the lower die cavity (2), one side of the slag cavity (9) is communicated with an exhaust channel (10), and the exhaust channel (10) is arranged between the lower die plate (1) and the upper die plate (3).

2. The die casting die for complex workpieces as claimed in claim 1, wherein: the workpiece forming insert comprises a die core insert (5) and a forming insert (6) which are opposite in position, a workpiece forming surface (7) is arranged on the side face of the forming insert (6), a certain distance is reserved between the workpiece forming surface (7) and the die core insert (5), the distance is communicated with the lower die cavity (2) and the upper die cavity (4), the workpiece forming die cavity is jointly formed, and the branch runner (81) is communicated with the lower die cavity (2), the upper die cavity (4) and the workpiece forming surface (7).

3. The die casting die for complex workpieces as claimed in claim 2, wherein: the lower die cavity (2) is internally provided with a plurality of forming concave surfaces (21), the forming concave surfaces (21) are arranged on the lower die plate (1) below the die core embedded blocks (5) and the forming embedded blocks (6), the forming concave surfaces (21) are mutually connected, and the edges of the workpiece forming surface (7) are abutted to the forming concave surfaces (21) and are mutually matched in shape.

4. A die casting die for complex workpieces as claimed in claim 3, wherein: the slag cavity (9) is communicated with the lower die cavity (2) through a discharge channel (91), and in the lower die cavity (2), the tail end of each forming concave surface (21) far away from one side of the pouring channel (8) is connected with one discharge channel (91).

5. The die casting die for complex workpieces as claimed in claim 4, wherein: the shape of the slag cavity (9) is matched with the shape of the workpiece, the slag cavities (9) are provided with a plurality of discharge channels (91) adjacent to each other in the communication position of the slag cavities (9), and the slag cavities (9) are mutually communicated.

6. The die casting die for complex workpieces as claimed in claim 1, wherein: the exhaust channel (10) can be embedded in the end face of the lower template (1) contacted with the upper template (3) and penetrates out of the side face of the lower template (1), and the cross section area of one end, close to the slag cavity (9), of the exhaust channel (10) is larger than that of one end, far away from the slag cavity (9).

7. The die casting die for complex workpieces as claimed in claim 2, wherein: the bottom of mold core slug (5) is provided with die sinking groove (12), die sinking groove (12) set up in the one end that lower bolster (1) was kept away from to mold core slug (5), shaping slug (6) bottom is provided with die sinking groove (12) equally, die sinking groove (12) set up in the one end that lower bolster (1) was kept away from in shaping slug (6).

8. The die casting die for complex workpieces as claimed in claim 1, wherein: be provided with cooling water route (11) in lower bolster (1), cooling water route (11) are including coolant liquid entry and coolant liquid return circuit, the coolant liquid entry is seted up from lower bolster (1) side, the coolant liquid return circuit sets up to follow lower bolster (1) keep away from one side of shaping chamber and extend to the below of lower die cavity (2).

9. The die casting die for complex workpieces as claimed in claim 8, wherein: a cooling water channel (11) is also arranged in the upper die plate (3), the cooling liquid inlet is formed in the side face of the upper die plate (3), and the cooling liquid loop is arranged to extend from one side, far away from the forming cavity, of the upper die plate (3) to the upper part of the upper die cavity (4).

10. A die casting die for complex workpieces as defined in claim 3 or 6, characterized in that: the upper die cavity (4) is arranged corresponding to the forming concave surface (21) and the exhaust channel (10) which are arranged in the lower die cavity (2).