CN210936498U

CN210936498U - Porous profile molding die

Info

Publication number: CN210936498U
Application number: CN201921616405.2U
Authority: CN
Inventors: 邱建平; 王胜; 李博; 饶道飞
Original assignee: Ningbo Keno Precision Industry Technology Co ltd
Current assignee: Ningbo Keno Precision Industry Technology Co ltd
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-07-07
Anticipated expiration: 2029-09-26

Abstract

A porous profile molding die comprises an upper die and a lower die, wherein: the upper die is provided with a material storage cavity, four feeding holes which are annularly arranged are formed in the material storage cavity, and a die core is arranged in the middle of the material storage cavity; the four flow blocking platforms are respectively arranged at the positions of the four feeding holes facing to the center of the mold core, and flow holes are formed between the adjacent flow blocking platforms; a central column protruding outwards is arranged in the center of the mold core; and a welding chamber is arranged on one side of the lower die, which faces the upper die, a forming cavity is arranged in the middle of the welding chamber, and a protruding structure on the die core is arranged in the forming cavity. According to the porous profiled bar forming die, the special flow holes and the flow blocking table are arranged, so that the flow of an aluminum material can be finely adjusted, the aluminum material can be prevented from being too early close to a discharging center position, and the size of a product is guaranteed; meanwhile, the flow blocking platform can buffer the flow of the aluminum material, and the product size at the bridge position can be guaranteed.

Description

Porous profile molding die

Technical Field

The utility model belongs to section bar extrusion die field, concretely relates to porous profile shapes forming die.

Background

The resources of aluminum in the earth crust are very abundant, so that aluminum is used next to steel in the industry at present, and is the second largest metal. The metal aluminum has special chemical and physical properties, light weight, firm texture, good ductility, conductivity and heat resistance, and is an important basic raw material in national economic development.

Aluminum profiles are a large class of aluminum products and are widely used in the fields of construction, automotive, industry, and the like. In some application fields, porous special-shaped aluminum alloy sections are required, the requirement on the quality of products is high, and the quality of the products is seriously influenced by a small amount of defects. The porous profile products are generally formed by extrusion through a die, and the phenomenon of unstable head and tail temperature of the profile is easily generated in the extrusion forming process, so that the mechanical property of the aluminum material is unstable; meanwhile, the material tapping guide in some dies is unreasonable, the material tapping of the central round hole is insufficient, the material tapping at the bridge position is excessive, the tail shrinkage degree is severe easily, the size fluctuation of the head and the tail is large, the product size cannot be guaranteed to be stable, the die rejection rate is high easily due to the problems, and the cost is increased.

Therefore, based on the above problems, the present invention provides a porous profile forming mold, which is further designed and studied in order to solve one or more of the above problems.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a porous profiled bar forming die, wherein a special flow hole and a flow blocking table are arranged at the center tapping position of the die, so that the flow of aluminum materials can be finely adjusted, the aluminum materials can be prevented from being too early close to the discharging center position, and the size of a product is ensured; meanwhile, the flow blocking platform can buffer the flow of the aluminum material, and the product size at the bridge position can be guaranteed.

In order to solve the above technical problem, the present invention solves the above technical problems.

A porous profile molding die comprises an upper die and a lower die, wherein: the upper die is provided with a material storage cavity, four feeding holes which are annularly arranged are formed in the material storage cavity, and a die core is arranged in the middle of the material storage cavity; the four flow blocking platforms are respectively arranged at the positions of the four feeding holes facing to the center of the mold core, and flow holes are formed between the adjacent flow blocking platforms; a central column protruding outwards is arranged in the center of the mold core; and a welding chamber is arranged on one side of the lower die, which faces the upper die, a forming cavity is arranged in the middle of the welding chamber, and a protruding structure on the die core is arranged in the forming cavity.

In this application, aluminium alloy liquid/aluminium bar enters into four feed ports from the material storage chamber of last mould, then enters into the welding room, and extrusion is become porous profile shapes product from the shaping chamber at last. In this application, it has done special discharge hole to attack the material position at the mould center, because of the aluminium material more tends to flow toward the position that the resistance is little under the pressure, set up the aluminium material flow that special discharge hole can increase this position, suitably reduce the aluminium material flow of the size in order to reduce this position in four bridge position holes simultaneously, such design helps avoiding the aluminium material to be close to ejection of compact central point prematurely, section bar head and the tail temperature is more stable during consequently the extrusion, product mechanical properties obtains guaranteeing. In addition, be equipped with four choked flow platforms in this application to the flow of buffering aluminium material can ensure the product size of bridge position department.

In a preferred embodiment, the cross section of the feeding holes is in a sector shape with arc chamfers, and the four feeding holes are symmetrically arranged on the periphery of the mold core.

In a preferred embodiment, the outer ring of the feeding hole is provided with a circle of pressure reducing area, and the pressure reducing area separates the feeding hole from the side wall of the material storage cavity.

In a preferred embodiment, the weld chamber has an alternating convex and concave contour, with a total of four symmetrically arranged projections corresponding to the position of the feed openings. The structure ensures that the aluminum liquid is stable when flowing, does not cause product backlog, turbulent flow and the like, and ensures that the profile has high quality.

In a preferred embodiment, in the upper die, the feeding hole has an inclined inner wall, and the inclination angle a of the inner wall is 6-8 °.

In a preferred embodiment, a boss is arranged on one surface of the upper die facing the lower die, and a concave platform is arranged on one surface of the lower die facing the upper die; the boss can be clamped into the concave table to realize assembly, the stability is high after assembly, and the probability of wall deviation is reduced.

Compared with the prior art, the utility model discloses following beneficial effect has: the porous profiled bar forming die is provided, and the special flow holes and the flow blocking table are arranged at the material tapping position in the center of the die, so that the flow of the aluminum material can be finely adjusted, the aluminum material can be prevented from being too early close to the material discharging center position, and the size of a product is ensured; meanwhile, the flow blocking platform can buffer the flow of the aluminum material, and the product size at the bridge position can be guaranteed.

Drawings

Fig. 1 is a front view of a lower mold of the present invention.

Fig. 2 is a side view of the lower mold of the present invention.

Fig. 3 is a front view of the upper mold of the present invention.

Fig. 4 is a side view of the upper die of the present invention.

Fig. 5 is a schematic front view of the upper and lower dies of the present invention after being assembled.

Fig. 6 is a side sectional view of the upper and lower molds after being closed.

Fig. 7 is an enlarged view of the area a in fig. 3.

Fig. 8 is a first schematic view of an extrusion apparatus according to an embodiment of the present invention.

Fig. 9 is a second schematic view of an extrusion apparatus according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not construed as limiting the present invention, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

In the description of the present invention, it is to be understood that the term: the center, vertically, transversely, length, width, thickness, upper and lower, preceding, back, left and right, vertical, level, top, end, inside and outside, clockwise, anticlockwise etc. indicate position or positional relationship for based on the position or positional relationship that the drawing shows, just for the convenience of description the utility model discloses and simplified description, consequently can not be understood as the restriction of the utility model. Furthermore, the terms: first, second, etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present invention, unless explicitly stated or limited otherwise, the terms: mounting, connecting, etc. are to be understood broadly and those skilled in the art will understand the specific meaning of the terms in this application as they pertain to the particular situation.

Referring to fig. 1 to 9, the present application relates to a porous profiled bar forming mold, which includes an upper mold 2 and a lower mold 1, wherein: a material storage cavity 22 is formed in the upper die 2, four feeding holes 21 are formed in the material storage cavity 22 in an annular mode, and a die core 23 is arranged in the middle of the material storage cavity 22; the four flow blocking stages 231 are respectively arranged on the four feeding holes 21 facing to the center of the mold core, and flow holes 232 are formed between the adjacent flow blocking stages 231; a central column 236 protruding outwards is arranged in the center of the mold core 23; one side of the lower die 1 facing the upper die 2 is provided with a welding chamber 12, the middle position of the welding chamber 12 is provided with a forming cavity 11, and a protruding structure on the die core 23 is arranged in the forming cavity 11.

Specifically, in this application, the cross-section of feed port 21 is for having the fan-shaped of arc chamfer, and four feed port 21 symmetries set up around mold core 23, and this structure makes the feeding stable, and the velocity of flow is balanced, and no beat, product quality is high. The weld chamber 12 has an alternating contour of projections 122 and recesses 123, with a total of four symmetrically arranged projections 122, said projections 122 corresponding to the position of the inlet openings 21. The structure ensures that the aluminum liquid is stable when flowing, does not cause product backlog, turbulent flow and the like, and ensures that the profile has high quality.

In addition, in this application, the outer lane of feed port 21 is equipped with a round decompression district 24, decompression district 24 separates the lateral wall of feed port 21 and stock chamber 22, and in this structure, the diameter of decompression district 24 slightly is greater than the bar footpath to make it can complete cladding aluminium bar, solved the serious problem of mould water leakage, improved product quality. In the upper die 2, the feeding hole 21 is provided with an inclined inner wall, and the inclination angle a of the inner wall is 6-8 degrees, so that the aluminum material flows stably. In the application, a boss 25 is arranged on one surface of the upper die 2 facing the lower die 1, and a concave platform 13 is arranged on one surface of the lower die 1 facing the upper die 2; the boss 25 can be clamped into the concave table 13 to realize assembly, the stability is high after assembly, and the probability of wall deviation is reduced.

In the application, the aluminum alloy liquid/aluminum bar enters into the four feeding holes 21 from the material storage cavity 22 of the upper die 2, then enters into the welding chamber 12, and finally is extruded and formed into a porous profile product from the forming cavity 11. In this application, it has done special discharge hole 232 to attack the material position at the mould center, because of the position that the aluminium material more tends to toward the resistance is little flows under the pressure, set up the aluminium material flow that special discharge hole 232 can increase this position, suitably reduce the aluminium material flow of the size in order to reduce this position in four bridge position holes simultaneously, such design helps avoiding the aluminium material to be close to ejection of compact central point prematurely, section bar head and the tail temperature is more stable during consequently the extrusion, product mechanical properties obtains guaranteeing. In addition, be equipped with four choked flow platforms 231 in this application to the flow of buffering aluminium material can ensure the product size of bridge position department.

In addition, the die has the advantages that the head and tail temperature of the profile is more stable during extrusion, and the mechanical property of the product is ensured; the tapping direction is normal, the aluminum material is prevented from being gathered to the center too early, and the product size is guaranteed; the extrusion speed is improved by about 25 percent, and the product quality is ensured.

Fig. 8 and 9 are schematic views of an extrusion apparatus in an embodiment of the present application, and it can be seen that the extrusion apparatus includes an extrusion molding apparatus, a profile supporting apparatus, and a profile cooling apparatus, wherein the specific structure is as follows.

Extrusion device 3 is equipped with last mould 2 and lower mould 1 in this application for the extrusion ejection of compact shaping.

The profile supporting device is arranged outside the extrusion port and used for supporting the extruded profile; the section bar supporting device comprises a supporting frame 91 and a supporting roller 92 arranged on the supporting frame 91, and in the application, three section bar supporting devices are arranged, so that the section bar supporting effect is good.

The section cooling device comprises an upper blowing fan 4 and a lower blowing fan 5, wherein the upper blowing fan 4 and the lower blowing fan 5 face the extruded section. Specifically, the number of the upper blowing fans 4 is two, the two upper blowing fans 4 are slidably arranged on the upper sliding rod 44, and the number of the lower blowing fans 5 is two. An upper base 43 of the upper blowing fan 4 is arranged on an upper lead screw 41, and the upper lead screw 41 is driven to rotate by an upper motor 42. The lower base 53 of the lower blowing fan 5 is arranged on the lower lead screw 51, and the lower lead screw 51 is driven by the lower motor 52 to rotate. The cooling effect is good, the position of the upper and lower blowing fans can be conveniently adjusted through the rotation of the upper and lower screw rods, and the cooling effect is improved through selecting the most appropriate position.

The motor circuit connection mode, the motor control mode, the extrusion control device and the like in the application are conventional technologies in the field, and description is not given. In this application, blow the cooling through fan of blowing from top to bottom to just extrusion's section bar, increased cooling rate, improved section bar surface quality.

Therefore, the utility model provides a porous profiled bar forming die, the special flow hole and the flow choking platform arranged at the material tapping position in the center of the die can finely adjust the flow of the aluminum material, and the aluminum material can be prevented from being too early close to the material discharging center position, so that the size of the product is ensured; meanwhile, the flow blocking platform can buffer the flow of the aluminum material, and the product size at the bridge position can be guaranteed.

The protection scope of the present invention includes but is not limited to the above embodiments, the protection scope of the present invention is subject to the claims, and any replacement, deformation, and improvement that can be easily conceived by those skilled in the art made by the present technology all fall into the protection scope of the present invention.

Claims

1. The utility model provides a porous profile molding mould, includes mould (2) and lower mould (1), its characterized in that:

a material storage cavity (22) is formed in the upper die (2), four feeding holes (21) are formed in the material storage cavity (22) in an annular mode, and a die core (23) is arranged in the middle of the material storage cavity (22); the mold core (23) is provided with four flow blocking platforms (231) protruding outwards, the four flow blocking platforms (231) are respectively arranged at the positions of the four feeding holes (21) facing the center of the mold core, and flow holes (232) are arranged between the adjacent flow blocking platforms (231); a central column (236) protruding outwards is arranged in the center of the mold core (23);

one side of the lower die (1) facing the upper die (2) is provided with a welding chamber (12), the middle of the welding chamber (12) is provided with a forming cavity (11), and a protruding structure on the die core (23) is arranged in the forming cavity (11).

2. A porous profile forming die according to claim 1, wherein the cross-section of the feeding holes (21) is a sector with an arc chamfer, and four feeding holes (21) are symmetrically arranged around the die core (23).

3. A porous profile forming die according to claim 1, wherein the outer periphery of the inlet opening (21) is provided with a ring of pressure reducing zones (24), the pressure reducing zones (24) separating the inlet opening (21) from the side walls of the storage chamber (22).

4. A porous profile forming die according to claim 1, wherein the weld chamber (12) has an alternating profile of protrusions (122) and recesses (123) with a total of four symmetrically distributed protrusions (122), said protrusions (122) corresponding to the positions of the inlet openings (21).

5. A porous profile forming die according to claim 1, wherein the feeding holes (21) in the upper die (2) have inclined inner walls with an angle of inclination a of 6 ° to 8 °.

6. A porous profile forming die according to claim 1, wherein a boss (25) is provided on a surface of the upper die (2) facing the lower die (1), and a recess (13) is provided on a surface of the lower die (1) facing the upper die (2); the projection (25) can be snapped into the recess (13) for assembly.