CN212760402U - Hot extrusion die with central small cylindrical die core as insert - Google Patents

Abstract

The utility model discloses a hot extrusion die of inlaying core is done to little cylinder mold core class in center, inlay the core including terrace die, die and terrace die, die cooperation equipment, it is downthehole that the core is inlayed at the mold core of terrace die center department to terrace die inlay the core. The small cylindrical mold core is designed independently, is finished by a lathe, and is then embedded on the male mold, and the mold core is machined to reach the design precision, so that the water supply around the mold core is balanced, and the problem of unbalanced discharging is solved; in addition, because the small cylindrical mold core is processed independently, the lower hollow cutter can be completely symmetrical, the strength of the mold core is ensured, the occurrence of extrusion breakage is avoided, and the production safety is improved. In addition, the male die core of the utility model is installed and matched with the argon arc welding cover, so as to ensure the stability of the extrusion of the die core; the mold core is provided with the bearing steps, so that the mold core is stressed uniformly and is not easy to break, the performance of the mold is greatly improved, and the service life of the mold is greatly prolonged. The utility model discloses mould simple manufacture, it is convenient to install, and the yardstick is accurate, and the type spare of production is of high quality, has very good practical value.

Description

Hot extrusion die with central small cylindrical die core as insert

Technical Field

The utility model relates to a hot extrusion die with a central small cylindrical die core as an insert.

Background

With the continuous development of science and technology, the lightweight technology in the fields of automobiles, aerospace and the like is continuously improved, and meanwhile, the section with high safety and high mechanical performance is more and more valued by people. Due to the technical limitations of die design and processing, the sections of a plurality of sectional materials have to be disassembled to be assembled by matching the sections, however, the mechanical properties of the disassembled and assembled sectional materials can not meet the requirements of high efficiency, impact resistance and high safety performance. Therefore, the technical aspects of die design and processing must have breakthrough promotion, and especially similar to the die with a central cavity of a small cylinder, a set of die must be used for extrusion production to achieve the section bar with high mechanical property and high safety.

However, the design and processing of the mold with the central cavity being a small cylinder have the following technical difficulties. One is as follows: because the central small cylindrical mold core is completely surrounded by all the small mold cores at the periphery, the technical difficulty is high in the aspect of electric machining (electric spark), water supply at the periphery of the machined small cylindrical mold core is unbalanced, and the discharged material is easy to form an ellipse. The second step is as follows: as the electric machining (electric spark) belongs to manual operation, the lower blank cutter storage chamber is difficult to be symmetrically machined, the strength of the small central cylindrical mold core is seriously influenced, the small central cylindrical mold core is easy to break in the extrusion process, the mold is disabled and scrapped, and potential safety hazards are easily caused.

SUMMERY OF THE UTILITY MODEL

For the problem that exists in the solution, the utility model provides a hot extrusion die of inlaying the core is done to little cylinder mold core class in center designs the cylinder mold core alone, and the lathe finish machining then inlays on the terrace die to make its central little cylinder mold core reach design accuracy and intensity. The specific technical scheme is as follows:

the utility model provides a hot extrusion die of inlaying core is done to little cylinder mold core class in center, includes terrace die, die and terrace die inlay the core, terrace die, die cooperation equipment, it is downthehole that the mold core of terrace die center department is inlayed to the terrace die inlay core.

The hot extrusion die for the insert is made of the small central cylindrical die core, the male die insert comprises a die core insert seat, a die core supporting column and a die core body, the die core supporting column is located at the central part of the die core insert seat, the die core body is located at the central part of the die core supporting column, and the die core insert seat, the die core supporting column and the die core body are integrally cast and formed.

Preferably, the cross-sectional area of the mold core insert seat is larger than that of the mold core support column, and a bearing step is formed at the contact part of the mold core insert seat and the mold core support column; the cross-sectional area of the mold core supporting column is larger than that of the mold core body, and the mold core supporting column is used for fixing the mold core body and connecting the mold core supporting column with the mold core insert seat; and a hollow cutter body is arranged at the lower end of the die core body.

The hot extrusion die with the central small cylindrical die core as the insert comprises a die core insert seat hole, a die core support column through hole, a material storage cavity and an extrusion material port which are sequentially communicated, wherein the die core insert seat hole and the die core support column through hole are respectively matched with the die core insert seat and the die core support column of the male die insert and are used for limiting and mounting the male die insert; gaps are arranged between the material storage cavity and the extrusion discharge hole, and between the die core body and the lower blank cutter body on the die core body, so that a lower blank cutter material storage chamber is formed.

According to the hot extrusion die with the central small cylindrical die core as the insert, the assembling contact surface of the female die and the male die is provided with the water blocking block, and the water blocking block is positioned on the outer side of the cavity of the female die material storage chamber and used for blocking the flow velocity of the molten aluminum on the outer side.

Preferably, the water blocking block is an integral ring, and the inner surface of the integral ring is matched with the outer surface of the extruded profile casting.

The hot extrusion die with the embedded core is made of the central small cylindrical die core, matched positioning and assembling components are further arranged on the male die and the female die, and each positioning and assembling component comprises an installation fixing piece and an installation positioning piece and is used for positioning and assembling between the male die and the female die.

The mounting and fixing part comprises a positioning pin and a positioning pin hole, the mounting and positioning part comprises a positioning block and a positioning groove, the positioning pin hole and the positioning block are arranged on the contact surface of the male die and the female die, and the positioning pin hole and the positioning groove are arranged at the corresponding position of the female die.

According to the hot extrusion die with the embedded core made of the small central cylindrical die core, the end part of the embedded core seat hole of the male die is reserved with the sealing allowance, and after the embedded core of the male die is embedded into the die core embedding hole at the center of the male die, the sealing allowance of the embedded core seat hole is welded through argon arc.

Preferably, the central small cylindrical mold core is used as a hot extrusion mold for the insert, and the male mold insert is cast by using cemented carbide YG 15.

The utility model has the advantages that:

the utility model discloses hot extrusion die designs small cylinder mould core alone, and lathe finish machining then inlays on the terrace die to make its central small cylinder mould core reach the design precision, make its all around water supply balance, solve the uneven problem of ejection of compact; in addition, because the small cylindrical mold core is processed independently, the lower hollow cutter can be completely symmetrical, the strength of the mold core is ensured, the occurrence of extrusion breakage is avoided, and the production safety is improved.

In addition, the center of the male die of the die is provided with a die core mounting hole which is matched with an argon arc welding cover to ensure the stability of die core extrusion; the mold core is provided with the bearing steps, so that the mold core is stressed uniformly and is not easy to break, the performance of the mold is greatly improved, and the service life of the mold is greatly prolonged. The utility model discloses the mould is compared with traditional mould, and it is simple more convenient to make, and the processing yardstick is more accurate, and the finished piece quality of production is better, has very good practical value.

Drawings

FIG. 1 is a schematic cross-sectional view of a male die of a hot extrusion die with a central small cylindrical die core as an insert of the present invention;

FIG. 2 is a schematic longitudinal section view of a male die of the present invention;

FIG. 3 is a schematic cross-sectional view of the female mold of the present invention;

FIG. 4 is a schematic longitudinal section view of the male mold of the present invention;

FIG. 5 is a schematic view of a male die insert structure of the die of the present invention;

FIG. 6 is a schematic cross-sectional view of the assembly of the male mold and the female mold of the present invention;

FIG. 7 is a longitudinal sectional view of the male and female dies of the mold of the present invention;

fig. 8 is a schematic structural diagram of a profile casting extruded by the die of the present invention.

In the figure: 1. a male die; 2. a female die; 3. embedding a core in the male die; 31. a mold core embedding seat; 32. a mold core support column; 33. a die core body; 4. die core embedding holes; 41. a core setting hole; 42. a mold core support column through hole; 43. a storage cavity; 44. extruding and discharging a material outlet; 5. a bearing step; 6. a hollow cutter body is arranged; 61. a blank cutter storage chamber; 7. a water blocking block; 8. a cavity of the female die stock room; 9. a section casting; 10. mounting a fixing piece; 101. positioning pins; 102. a positioning pin hole; 11. installing a positioning piece; 111. positioning blocks; 112. positioning holes; 12. and (7) sealing the residual amount.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the embodiments and the accompanying drawings. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. The specific embodiment is as follows:

the hot extrusion die with the central small cylindrical die core as the insert is shown in figures 1 to 7 and comprises a male die 1, a female die 2 and a male die insert 3, wherein the male die 1 and the female die 2 are assembled in a matched mode, and the male die insert 3 is embedded in a die core embedding hole 4 in the center of the male die 1. The small cylindrical mold core (the male mold insert 3) is designed independently, is finished by a lathe, and is then embedded on the male mold 1, so that the machining precision of the central small cylindrical mold core is ensured, the water supply around the small cylindrical mold core is balanced, and the problem of unbalanced discharge is solved.

Specifically, in the hot extrusion die with a small central cylindrical core as an insert according to this embodiment, the male die insert 3 is preferably cast by using cemented carbide YG15 through a hot-insert process, and includes a core insert seat 31, a core support column 32, and a die core body 33. In this embodiment, the mold core insert seat 31, the mold core supporting column 32 and the mold core body 33 are all cylinders, the mold core supporting column 32 is located at the central portion of the mold core insert seat 31, the mold core body 33 is located at the central portion of the mold core supporting column 32, and the mold core insert seat 31, the mold core supporting column 32 and the mold core body 33 are integrally cast. In other embodiments, the core insert seat 31 and the core support columns 32 may be in other forms, but the cross-sectional area of the core insert seat 31 is larger than that of the core support columns 32, and force bearing steps 5 can be formed at the contact positions of the core insert seat and the core support columns 32; the core support column 32 has a cross-sectional area larger than that of the core body 33 so as to fix the core body 33 and connect it with the core insert seat 31. In this embodiment, the male die insert 3 has the following specifications: the section diameter of the die core insert seat 31 is 25mm, and the height is 11 mm; the cross section diameter of the mold core support column 32 is 15mm, and the height is 35 mm; the cross section diameter of the die core body 33 is 5.86mm, and the height is 11 mm; the lower end of the die core body 33 is provided with a lower hollow cutter body 6, the diameter of which is 6.46m and the height of which is 5 mm. Because the small cylindrical mold core is processed independently, the lower hollow cutter of the small cylindrical mold core is processed by finish turning, complete symmetry can be achieved, the strength of the mold core is ensured, the occurrence of extrusion breakage is avoided, and the production safety is improved.

Meanwhile, in the hot extrusion die with a small central cylindrical die core as an insert in the embodiment, the die core insert hole 4 in the center of the male die 1 comprises a die core insert seat hole 41, a die core support column through hole 42, a material storage cavity 43 and an extrusion material port 44 which are sequentially communicated. The diameters of the insert seat hole 41 and the mold core support column through hole 42 are respectively matched with the mold core insert seat 31 and the mold core support column 32 of the male mold insert 3, the male mold insert 3 is installed in a limiting mode, and the bearing step 5 of the male mold insert 3 is just clamped on the step between the insert seat hole 41 and the mold core support column through hole 42, so that the male mold insert is stressed uniformly and is not prone to fracture, and the performance and the service life of the mold are greatly improved. The material storage cavity 43 adopts numerical control electric spark machining, and the precision is accurate; the extrusion discharge port 44 is processed by high-precision numerical control slow-speed wire feeding, so that the balance of discharge is ensured; gaps are arranged between the material storage cavity 43 and the extrusion material port 44 and the die core body 33 and between the lower blank cutter body 6 on the die core body 33 to form a lower blank cutter material storage chamber 61, so that the aluminum water can be extruded and molded conveniently. In addition, in order to guarantee the stability of the installation of the terrace die insert 3, the end part of the insert seat hole 41 of the terrace die 1 is provided with a sealing allowance 12, after the terrace die insert 3 is embedded into the die core insert hole 4 at the center of the terrace die 1, the sealing allowance 12 of the insert seat hole 41 is provided with an argon arc welding surface, and the stress of the die for extruding the terrace die insert 3 can be guaranteed.

In this embodiment, a water blocking block 7 is arranged on the assembling contact surface of the female die 2 and the male die 1, and the water blocking block 7 is located outside a cavity 8 of a storage chamber of the female die and used for blocking the flow rate of outside molten aluminum. The water stop block 7 is preferably an integral ring whose inner surface is shaped to match the outer surface of the extruded profile casting 9, which facilitates controlled extrusion of the profile casting 9, as shown in fig. 8.

In addition, for the equipment convenience of mould, the hot extrusion die of inlaying the core is done to the little cylinder mold core class in center, still all be equipped with the location assembly subassembly of matching on terrace die 1 and the die 2, the location assembly subassembly includes installation mounting 10 and installation setting element 11 for the location equipment between terrace die 1 and the die 2. The mounting and fixing member 10 includes a positioning pin 101 and a positioning pin hole 102, the mounting and positioning member 11 includes a positioning block 111 and a positioning slot 112, the positioning pin hole 102 and the positioning block 111 are disposed on the contact surface of the male die 1 and the female die 2, and the positioning pin hole 102 and the positioning slot 112 are disposed at the corresponding position of the female die 2. The male die 1 and the female die 2 are fixedly installed through the positioning pin 101 after being positioned and installed through the installation positioning piece 11, and the effect of quick installation is achieved. Generally speaking, this embodiment the hot extrusion die of core is made to little cylinder mold core class in center compare with traditional mould, make simple more convenient, the processing yardstick is more accurate, the finished piece quality of production is better, has very good practical value.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. The hot extrusion die for making the insert with the central small cylindrical die core is characterized in that: the combined type punch insert is characterized by comprising a punch (1), a die (2) and a punch insert core (3), wherein the punch (1) and the die (2) are assembled in a matched mode, and the punch insert core (3) is embedded in a die core embedding hole (4) in the center of the punch (1).

2. The hot extrusion die for embedding the center small cylindrical die core as claimed in claim 1, wherein: the male die insert (3) comprises a die core insert seat (31), a die core support column (32) and a die core body (33), wherein the die core support column (32) is located at the central part of the die core insert seat (31), the die core body (33) is located at the central part of the die core support column (32), and the die core insert seat (31), the die core support column (32) and the die core body (33) are integrally cast.

3. The hot extrusion die for embedding the center small cylindrical die core as claimed in claim 2, wherein: the cross-sectional area of the mold core insert seat (31) is larger than that of the mold core support column (32), and a bearing step (5) is formed at the contact part of the mold core insert seat and the mold core support column (32); the cross-sectional area of the mold core supporting column (32) is larger than that of the mold core body (33), and the mold core body (33) is fixed and connected with the mold core insert seat (31); the lower end of the die core body (33) is provided with a lower hollow cutter body (6).

4. The hot extrusion die for embedding the center small cylindrical die core as claimed in claim 1, wherein: the die core embedding hole (4) in the center of the male die (1) comprises a die core embedding seat hole (41), a die core supporting column through hole (42), a material storage cavity (43) and an extrusion material port (44) which are sequentially communicated, and the die core embedding seat hole (41) and the die core supporting column through hole (42) are respectively matched with a die core embedding seat (31) and a die core supporting column (32) of the male die embedding core (3) and used for limiting and installing the male die embedding core (3); gaps are arranged between the material storage cavity (43) and the extrusion material port (44) and the die core body (33) and between the lower hollow cutter body (6) on the die core body (33) to form a lower hollow cutter material storage chamber (61).

5. The hot extrusion die for embedding the center small cylindrical die core as claimed in claim 1, wherein: and a water blocking block (7) is arranged on the assembling contact surface of the female die (2) and the male die (1), and the water blocking block (7) is positioned on the outer side of the female die material storing chamber cavity (8) and used for blocking the flow speed of the outside molten aluminum.

6. The hot extrusion die for embedding the center small cylindrical die core as claimed in claim 5, wherein: the water blocking block (7) is an integral ring, and the inner surface of the water blocking block is matched with the outer surface of the extruded section casting (9).

7. The hot extrusion die for embedding the center small cylindrical die core as claimed in claim 1, wherein: and the male die (1) and the female die (2) are also provided with matched positioning and assembling components, and the positioning and assembling components comprise mounting and fixing pieces (10) and mounting and positioning pieces (11) and are used for positioning and assembling between the male die (1) and the female die (2).

8. The hot extrusion die for embedding the center small cylindrical die core as claimed in claim 7, wherein: the installation fixing piece (10) comprises a positioning pin (101) and a positioning pin hole (102), the installation positioning piece (11) comprises a positioning block (111) and a positioning groove (112), the positioning pin hole (102) and the positioning block (111) are arranged on the contact surface of the male die (1) and the female die (2), and the positioning pin hole (102) and the positioning groove (112) are arranged at the corresponding position of the female die (2).

9. The hot extrusion die for embedding the center small cylindrical die core as claimed in claim 1, wherein: a sealing allowance (12) is reserved at the end part of a core embedding seat hole (41) of the male die (1), and after a male die embedding core (3) is embedded into a die core embedding hole (4) in the center of the male die (1), a cover is welded at the sealing allowance (12) of the core embedding seat hole (41) through argon arc.

10. The hot extrusion die for embedding the center small cylindrical die core as claimed in claim 2, wherein: the male die insert (3) is cast by hard alloy YG 15.

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