CN205732899U - The compression mod of processing top cover - Google Patents

Abstract

The utility model discloses a die-casting mold for processing a top cover, which comprises a fixed mold and a movable mold. A molding cavity for molding the top cover is formed on two adjacent molding surfaces between the fixed mold and the movable mold. The sprue is connected; the movable mold is equipped with a splitter cone and a push rod for ejecting the top cover; it is characterized in that: two forming cavities are arranged at intervals in the transverse direction, and the entire sprue is located between the two forming cavities position and the upper end communicates with the two molding cavities; one end of the splitter cone is the splitter end, which protrudes from the molding surface of the movable mold and has a groove-shaped flow passage; the lower end of the sprue and the upper end of the flow passage There is a mounting hole on the fixed mold at the position facing the splitter cone, and a sprue sleeve is inserted and installed at the installation hole, and the inner diameter of the sprue sleeve matches the outer diameter of the splitter cone. The die-casting die for processing the top cover of the utility model has the advantage of reasonable structural design, two top covers can be produced in one process, and the production efficiency of the top cover is improved.

Description

Die-casting mold for machining top cover

technical field

The utility model belongs to the field of die-casting molds, in particular to a die-casting mold for processing a top cover.

Background technique

Die casting, also known as pressure casting, belongs to the category of casting process and is one of the special casting processes. The die-casting process is to use the die-casting mold to pour the molten alloy into the pressure chamber of the die-casting machine. Under the action of pressure, it is filled in the cavity of the die-casting mold at a very high speed, and the molten alloy is cooled and solidified under high pressure to obtain a casting.

The top cover is a thin-walled part with a complex structure. The patent with the notification number CN204308164U (publication date: 2015.05.06) in the prior art discloses a die-casting mold for the top cover. The die-casting mold for the top cover includes A fixed mold and a movable mold, forming a molding cavity for molding the top cover and a runner connected to the molding cavity and allowing metal liquid to enter the molding cavity between the fixed mold and the moving mold , the molding cavity has a downwardly inclined channel located on the lower side of the forming cavity and used to form an inclined thin wall on the lower side of the top cover, the runner is connected to the bottom of the downwardly inclined channel, the The runner and the downwardly inclined cavity are inclined towards the same side, and the included angle between the guide direction of the runner to the liquid metal and the direction of conduction of the liquid metal by the downwardly inclined cavity is greater than or equal to 0° and less than 90°.

But the die-casting mold for the above-mentioned top cover has the following weak points:

1. The molding cavity of the mold can only produce one top cover at a time, and the processing efficiency is low;

2. The splitter cone of the mold is fixedly installed at the bottom of the movable mold. Such a structure is difficult to ensure the structural strength of the splitter cone, making it difficult for the splitter cone to adapt to the high pressure required for processing two or more top covers. Therefore, the structure at the splitter cone also limits the mold to achieve more efficient die-casting processing.

Based on this, the applicant considers designing a die-casting mold that can process two top covers at one time and has higher processing efficiency.

Utility model content

Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the utility model is: how to provide a die-casting mold for processing two roofs at one time with higher processing efficiency.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

The die-casting mold for processing the top cover includes a fixed mold and a movable mold. A molding cavity for molding the top cover is formed on two adjacent molding surfaces between the fixed mold and the movable mold, and is used for passing the molten state alloy And a sprue connected with the molding cavity; a splitter cone and a push rod for ejecting the top cover are installed on the movable mold; it is characterized in that:

The molding cavities are two spaced apart in the transverse direction, the runner is located between the two molding cavities as a whole and its upper end communicates with the two molding cavities; one end of the splitter cone is a splitter end, and the splitter The end protrudes from the molding surface of the movable mold and has a groove-shaped flow passage; the lower end of the runner communicates with the upper end of the flow passage;

A mounting hole is provided on the fixed mold at the position facing the splitter cone, and a sprue sleeve is inserted and installed at the installation hole, and the inner diameter of the sprue sleeve is the same as the outer diameter of the splitter cone. match.

When the above-mentioned die-casting mold for processing the top cover is in use, the fixed mold is fixed on the fixed mold mounting plate of the die-casting machine, and the pouring system communicates with the pressure chamber; Move to close and open the fixed mold.

When the mold is closed, the push rod is reset. When the mold is completely closed, the molten metal is allowed to pass through the pressure chamber of the die-casting machine. , quickly enter the molding cavity formed by the closing of the movable mold and the fixed mold and fill the molding cavity. Because the molding cavities are two spaced apart, two top covers can be die-casted at one time, which improves the manufacturing efficiency. In addition, because the splitter end of the splitter cone is protruding from the molding surface of the movable mold, it has higher structural strength and can be used normally for a long time, ensuring the reliability of die-casting production.

When the mold is opened, the movable mold is separated from the fixed mold, and the die-casting part (top cover) is pushed out from the cavity by operating the push rod, and the next die-casting process can be carried out.

Preferably, the end of the splitter cone away from the splitter end is a positioning end falling in the counterbore of the movable mold, and the edge of the positioning end of the splitter cone is provided with a positioning shoulder coaxial with the splitter cone, the The movable mold is provided with a socket facing the positioning shoulder and matching in diameter, and a detent pin is inserted into the positioning shoulder and the socket.

The setting of the above-mentioned anti-rotation pin can effectively prevent the rotation of the splitter cone relative to the movable mold cover plate, and obtain accurate positioning to ensure the smooth passage of the molten metal.

Preferably, a through hole is coaxially penetrating through the splitter cone, and the push rod is slidingly fitted in the through hole.

In this way, not only can the ejection process of the die casting be optimized, but the gap between the push rod and the splitter cone also facilitates the venting and improves the quality of the die casting produced.

As preferably, the movable mold includes a movable mold base plate, and a cushion block, a support plate, a movable mold cover plate and a core block made of mold steel are fixed and connected in sequence in the thickness direction of the movable mold base plate;

A cavity for setting a push rod pushing structure is formed between the movable mold seat plate, the pad and the support plate, and a through hole communicating with the cavity is formed on the movable mold seat plate;

The side of the movable mold cover plate away from the support plate has a groove matching the shape and size of the core block, the core block is embedded and fixed in the groove as a whole, and the core The side of the block facing the outside of the groove as a whole is the molding surface.

In the structure of the above-mentioned movable mold, the core block adopts an inlay structure, and only the core block is made of mold steel, so that the mold steel can be used reasonably and the mold manufacturing cost can be reduced. In addition, the appropriate gap between the core block and the movable mold cover plate is also conducive to the exhaust of the molding cavity.

Preferably, the push rod pushing structure includes a push plate and a push rod fixing plate fixedly connected as one, the push plate is integrally adjacent to the movable mold seat plate, and the side of the push plate facing away from the movable mold seat plate is connected There is the push rod fixing plate, and the end of the push rod away from the forming cavity is fixedly connected with the push rod fixing plate.

The setting of the above-mentioned push plate and push plate fixing plate is more convenient to cooperate with the ejector pin of the die-casting machine (through the through hole communicating with the cavity on the movable mold base plate) to complete the pushing of the push rod.

Preferably, the pushing structure of the push rod further includes a push plate guide sleeve and a push plate guide column; a through hole is provided through the push plate and the push rod fixing plate along the thickness direction, and the through hole is plugged and fixed with As for the push plate guide sleeve, the said push plate guide column is fixedly mounted on the support plate and slideably fits with the push plate guide sleeve.

The setting of the above-mentioned push plate guide sleeve and push plate guide column can guide the push plate and the push rod fixing plate, making the moving process more accurate and ensuring the reliability of the push rod pushing structure.

As an improvement, the pushing structure of the push rod also includes a reset rod; one end of the reset rod is the inner end fixedly connected to the push rod fixing plate, and the other end is the outer end that passes through the support plate and the movable mold cover plate. end, and when the outer end is flush with the end surface of the movable mold cover plate away from the support plate, the push plate abuts against and limits the position with the limit nail installed on the movable mold seat plate.

The setting of the above-mentioned reset lever can make the outer end of the reset lever contact the fixed mold and gradually push the push plate and the push rod fixed plate to move towards the moving mold seat plate during the mold clamping process between the movable mold and the fixed mold. When the outer end is flush with the end face of the movable mold cover plate away from the support plate, the push plate abuts against the movable mold seat plate and limits the position; thus all the push rods are reset. It can be seen that the setting of the above-mentioned reset rod does not need to be reset by pushing the push rod, which plays a role in protecting the push rod.

Preferably, the fixed mold includes a fixed mold seat plate, a fixed mold cover plate and a cavity block made of mold steel; The cover plate is fixedly installed on the side of the fixed mold seat plate facing the movable mold cover plate;

There is a groove matching the shape and size of the cavity block on the side of the fixed mold cover plate facing the movable mold cover plate, and the cavity block is embedded and fixed in the groove as a whole, and the mold cavity block is The surface of the chamber block facing the outside of the groove as a whole is the forming surface.

In the structure of the above-mentioned fixed mold, the cavity block adopts an inlay structure, and only the cavity block is made of mold steel, which can rationally use the mold steel and reduce the cost of mold manufacturing. In addition, the appropriate gap between the mold cavity block and the fixed mold cover plate is also conducive to the exhaust of the molding cavity.

As an improvement, a guide post is fixedly provided on the side where the groove is located on the fixed die set plate, and a guide sleeve matching the guide post is fixedly provided on the movable die cover plate.

The movable mold can be accurately guided through the cooperation of guide pillars and guide sleeves, so as to maintain an accurate positional relationship with the fixed mold.

As a preference, lifting rings are fixedly installed on the upper end surfaces of the fixed die set plate and the movable die set plate.

The setting of the above-mentioned lifting ring is more convenient for lifting and transferring the fixed mold cover plate and the movable mold cover plate, thereby improving the moving or installation efficiency of the fixed mold and the movable formwork.

The die-casting die for processing the top cover of the utility model has the advantage of reasonable structural design, two top covers can be produced in one process, and the production efficiency of the top cover is improved.

Description of drawings

Fig. 1 is the assembly drawing (top view direction) of the die-casting mold of processing top cover of the utility model.

Fig. 2 is a sectional view of A-A in Fig. 1 .

Fig. 3 is a B-B sectional view in Fig. 1 .

Labeled in the figure:

1 fixed mold seat plate, 2 cylindrical pin, 3 sprue sleeve, 4 countersunk head screw, 5 fixed mold cover plate, 6 cavity block, 7 core block, 8 splitter cone, 9 anti-rotation pin, 10 movable mold cover plate , 11 straight pins, 12 pads, 13 movable mold seat plate, 14 push plate guide sleeve, 15 push plate guide column, 16 countersunk screw, 17 reset rod, 18 countersunk screw, 19 push rod fixing plate, 20 push plate , 21 limit nails, 22 push rods, 23 support plates, 24 guide sleeves, 25 guide posts, 26 lifting rings.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail. Wherein, the descriptive terms such as up, down, left, right, etc. are used for the description, with the purpose of helping readers to understand, but not intended to limit.

As shown in Figures 1 to 3, the die-casting mold for processing the top cover includes a fixed mold and a movable mold, and two adjacent molding surfaces between the fixed mold and the movable mold are formed with molding cavities for molding the top cover , and a runner for passing through the molten state alloy and communicating with the molding cavity; a splitter cone 8 and a push rod 22 for ejecting the top cover are installed on the movable mold;

The molding cavities are two laterally spaced ones, the runner is located between the two molding cavities as a whole and its upper end communicates with the two molding cavities; one end of the splitter cone 8 is a splitter end. The splitter end protrudes from the molding surface of the movable mold and has a groove-shaped flow channel; the lower end of the runner communicates with the upper end of the flow channel;

A mounting hole is provided on the fixed mold directly opposite to the position of the splitter cone 8, and a sprue sleeve 3 is plugged and installed at the installation hole, and the inner diameter of the sprue sleeve 3 is compatible with the splitter cone 8 The outer diameter matches.

During implementation, the shape of the groove of the flow channel of the splitter cone 8 is an arc with a long arc edge at the upper end. This can reduce the flow resistance of the molten metal, and is more conducive to the rapid flow of the molten metal to the sprue through the overflow channel.

Wherein, the end of the splitter cone 8 away from the splitter end is a positioning end falling in the countersink hole of the movable mold, and the edge of the positioning end of the splitter cone 8 is provided with a positioning shoulder coaxial with the splitter cone 8, The movable mold is provided with a socket facing the positioning shoulder and matching in diameter, and a detent pin 9 is inserted into the positioning shoulder and the socket.

Wherein, a through hole is coaxially penetrating through the splitter cone 8 , and the push rod 22 is slidingly fitted in the through hole.

Wherein, the movable mold includes a movable mold seat plate 13, and the cushion block 12, the support plate 23, the movable mold cover plate 10 and the mold steel made of mold steel are fixed and connected successively in the thickness direction of the movable mold seat plate 13. Pellet 7;

A cavity for setting a push rod pushing structure is formed between the movable mold base plate 13, the cushion block 12 and the support plate 23, and a through hole communicating with the cavity is formed on the movable mold base plate 13;

The side of the movable mold cover plate 10 away from the support plate 23 has a groove matching the shape and size of the core block 7, and the core block 7 is integrally embedded and fixed in the groove, and The surface of the core block 7 facing the outside of the groove as a whole is a molding surface.

During implementation, the core block 7 is fixedly connected with the movable mold cover plate 10 with countersunk screws; the movable mold cover plate 10 is positioned and connected on the support plate 23 through the cylindrical pin 11 and the countersunk screw 16; the support plate 23, the spacer 12 Position and connect with respect to the movable mold base plate 13 through straight pins and countersunk screws.

Wherein, the push rod pushing structure includes a push plate 20 and a push rod fixing plate 19 that are fixedly connected (fixedly connected by countersunk head screws 18), and the push plate 20 is integrally adjacent to the movable mold seat plate 13, and the The push rod fixing plate 19 is connected to the side of the push plate 20 away from the movable mold seat plate 13 , and the end of the push rod 22 away from the molding cavity is fixedly connected to the push rod fixing plate 19 .

In practice, the push rods 22 are a plurality of push rods that pass through the support plate 23 , the movable mold cover plate 10 and the core block 7 and are spaced apart from each other. In this way, the thrust force of the push rod 22 on the die casting can be distributed more evenly, thereby obtaining a better pushing effect.

Wherein, the push rod pushing structure also includes a push plate guide sleeve 14 and a push plate guide post 15; a through hole is provided through the push plate 20 and the push rod fixing plate 19 along the thickness direction, and a through hole is inserted into the through hole. The push plate guide sleeve 14 is connected and fixed, and the push plate guide post 15 that is slidingly fitted with the push plate guide sleeve 14 is fixedly installed on the support plate 23 .

Wherein, the push rod pushing structure also includes a reset rod 17; one end of the reset rod 17 is an inner end fixedly connected to the push rod fixed plate 19, and the other end is a rod that passes through the support plate 23 and the movable mold cover. The outer end of the plate 10, and when the outer end is flush with the end surface of the movable mold cover plate 10 away from the support plate 23, the push plate 20 abuts and limits the position with the limit nail 21 installed on the movable mold seat plate 13 .

During implementation, it is preferable that the reset rods 17 are multiple evenly arranged around the core block 7 .

Wherein, the fixed mold includes a fixed mold seat plate 1, a fixed mold cover plate 5 and a cavity block 6 made of mold steel; the fixed mold seat plate 1 is integrally parallel and facing the movable mold cover plate 10, The fixed mold cover plate 5 is fixedly installed on the side of the fixed mold seat plate 1 facing the movable mold cover plate 10;

The side of the fixed mold cover plate 5 facing the movable mold cover plate 10 has a groove matching the shape and size of the cavity block 6, and the cavity block 6 is integrally embedded and fixed in the groove, And the surface of the cavity block 6 facing the outside of the groove as a whole is a molding surface.

During implementation, the cavity block 6 and the fixed mold cover plate 5 are fixedly connected with countersunk screws. The fixed mold cover plate 5 is positioned and connected on the fixed mold seat plate 1 through the cylindrical pin 2 and the countersunk screw 4 .

Wherein, a guide post 25 is fixedly provided on the side where the groove is located on the fixed die cover plate 5 , and a guide sleeve 24 matching the guide post 25 is fixedly provided on the movable die cover plate 10 .

Wherein, a lifting ring 26 is fixedly installed on the upper end surfaces of the fixed mold cover plate 5 and the movable mold cover plate 10 .

When the above-mentioned die-casting mold for processing the top cover is in use, the fixed mold is fixed on the fixed mold mounting plate of the die-casting machine through the fixed mold base plate 1, and the pouring system communicates with the pressure chamber; the movable mold is fixed on the die-casting machine through the movable mold base plate 13. The movable mold mounting plate moves with the movable mold mounting plate to close and open the fixed mold.

When the mold is closed, the reset rod 17 is pushed against the movable mold cover plate 10, so that the push plate 20 and the push rod 22 are reset, and the push plate 20 is in contact with the limit nail 21; when the mold is completely closed, the molten metal is allowed to pass through the die casting machine Under the action of the injection punch, the molten metal enters the mold gate sleeve 3, enters the molding cavity (formed by the cavity block 6 and the core block 7) formed by the closing of the movable mold and the fixed mold, and fills it cavity.

When opening the mold, the movable mold is separated from the fixed mold, and the ejector pin (not shown) of the die-casting machine pushes the push plate 20, and the push plate 20 drives the push rod fixed plate 19, and the push rod 22 pushes the die casting out from the cavity.

The above-mentioned formed parts (i.e. cavity block 6 and core block 7) are obtained by parting molds according to the three-dimensional modeling of the product on the basis of considering the shrinkage rate of the product material, mold material and structure, so the precision of the formed part high.

Moreover, the molded parts adopt an inlaid structure, which can reasonably use the mold steel and reduce the cost of mold manufacturing; and the appropriate gap at the joint is conducive to the exhaust of the cavity.

The diverter cone 8 of the above die-casting mold is centered with a push rod 22 structure, which has a good guiding effect, and is pushed out to the runner smoothly through the push rod 22 in the middle, and the gap between the push rod 22 and the diverter cone 8 is also small. Aids in exhaust.

The above-mentioned die-casting mold can produce two pieces of die-casting parts in one process, so that the space of the movable and fixed molds can be rationally utilized, and the production efficiency of the die-casting parts can be improved.

Thin-walled and complex parts can be die-casted by using the above-mentioned die-casting mold, and the quality of the obtained die-casting parts is stable, and the interchangeability in terms of shape accuracy and dimensional accuracy is good.

The above are only the preferred embodiments of the present utility model. It should be pointed out that those skilled in the art can also make some deformations and improvements without departing from the technical solution. The above-mentioned deformations and improved technical solutions should be regarded as falling Into the protection scope of this application.

Claims (10)

1. The die-casting mold for processing the top cover, including a fixed mold and a movable mold. A molding cavity for molding the top cover is formed on two adjacent molding surfaces between the fixed mold and the movable mold, and a molding cavity for the molten state A sprue through which the alloy passes and communicates with the molding cavity; a splitter cone and a push rod for ejecting the top cover are installed on the movable mold; it is characterized in that: The molding cavities are two spaced apart in the transverse direction, the runner is located between the two molding cavities as a whole and its upper end communicates with the two molding cavities; one end of the splitter cone is a splitter end, and the splitter The end protrudes from the molding surface of the movable mold and has a groove-shaped flow passage; the lower end of the runner communicates with the upper end of the flow passage; A mounting hole is provided on the fixed mold at the position facing the splitter cone, and a sprue sleeve is inserted and installed at the installation hole, and the inner diameter of the sprue sleeve is the same as the outer diameter of the splitter cone. match. 2. The die-casting mold according to claim 1, characterized in that: the end of the splitter cone away from the splitter end is a positioning end falling in the countersink hole of the movable mold, and the edge of the positioning end of the splitter cone is provided with The positioning shoulder coaxial with the splitter cone, the movable mold is provided with a socket facing the positioning shoulder and matching in diameter, the positioning shoulder and the socket are inserted with a stopper pin. 3 . The die-casting mold according to claim 1 , wherein a through hole is coaxially penetrating through the inside of the splitter cone, and the push rod is slidingly fitted in the through hole. 4 . 4. The die-casting mold according to claim 1, characterized in that: the movable mold comprises a movable mold seat plate, and a cushion block, a support plate, and a movable mold cover are sequentially fixed and connected in the thickness direction of the movable mold seat plate plates and core blocks made of mold steel; A cavity for setting a push rod pushing structure is formed between the movable mold seat plate, the pad and the support plate, and a through hole communicating with the cavity is formed on the movable mold seat plate; The side of the movable mold cover plate away from the support plate has a groove matching the shape and size of the core block, the core block is embedded and fixed in the groove as a whole, and the core The side of the block facing the outside of the groove as a whole is the molding surface. 5. The die-casting mold according to claim 4, characterized in that: the push rod pushing structure comprises a push plate and a push rod fixing plate fixedly connected as one, the push plate is integrally adjacent to the movable die seat plate, and The push rod fixing plate is connected to the side of the push plate away from the movable mold seat plate, and the end of the push rod away from the forming cavity is fixedly connected to the push rod fixing plate. 6. The die-casting mold according to claim 5, characterized in that: the pushing structure of the push rod further includes a push plate guide sleeve and a push plate guide column; the push plate and the push rod fixing plate are penetratingly arranged along the thickness direction A through hole, the push plate guide sleeve is plugged and fixed at the through hole, and the push plate guide column slidingly fitted with the push plate guide sleeve is fixedly installed on the support plate. 7. The die-casting mold according to claim 5, characterized in that: the push rod pushing structure also includes a reset rod; one end of the reset rod is an inner end fixedly connected to the push rod fixing plate, and the other end is To pass through the outer end of the support plate and the movable mold cover plate, and when the outer end is flush with the end surface of the movable mold cover plate away from the support plate, the push plate is against the limit nail installed on the movable mold seat plate Connect and limit. 8. The die-casting mold according to claim 4, characterized in that: the fixed mold comprises a fixed mold seat plate, a fixed mold cover plate and a cavity block made of mold steel; the fixed mold seat plate is integrally parallel and Facing the movable die set plate, the fixed die set plate is fixedly installed on the side of the fixed die seat plate facing the movable die set plate; There is a groove matching the shape and size of the cavity block on the side of the fixed mold cover plate facing the movable mold cover plate, and the cavity block is embedded and fixed in the groove as a whole, and the mold cavity block is The surface of the chamber block facing the outside of the groove as a whole is the molding surface. 9. The die-casting mold according to claim 8, characterized in that: a guide post is fixedly provided on the side where the groove is located on the fixed die cover plate, and a guide post is fixedly provided on the movable die cover plate to match the guide post. Compatible guide sleeve. 10. The die-casting mold according to claim 8, characterized in that: lifting rings are fixedly installed on the upper end surfaces of the fixed mold cover plate and the movable mold cover plate.