CN217191709U

CN217191709U - Hot extrusion forming die

Info

Publication number: CN217191709U
Application number: CN202123354585.1U
Authority: CN
Inventors: 陶诚; 兰小英; 郭勇
Original assignee: Guangdong Minglida Technology Co Ltd
Current assignee: Guangdong Minglida Technology Co Ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-08-16
Anticipated expiration: 2031-12-28

Abstract

The utility model discloses a hot extrusion forming die, which comprises an upper die and a lower die detachably connected with the upper die, wherein the upper die is provided with a die core and two first branch holes and two second branch holes which are arranged around the die core; the lower die is provided with a welding chamber, the die core and the welding chamber form a die cavity matched with a hollow rectangular product to be molded, the die cavity comprises two first molding parts and two second molding parts, the first branch holes correspond to the first molding parts one by one, and the second branch holes correspond to the second molding parts one by one; one end of the upper die, which is far away from the lower die, is also provided with a first-level sinking bridge which is respectively communicated with the first diversion hole and the second diversion hole, a second-level sinking bridge is also arranged between the first-level sinking bridge and the die core, the second-level sinking bridge is provided with a diversion groove communicated with the first diversion hole, and the bottom of the diversion groove is in smooth transition. The hot extrusion forming die reduces the pressure of the heated aluminum alloy on the die core, and is beneficial to prolonging the service life of the hot extrusion forming die.

Description

Hot extrusion forming die

Technical Field

The utility model relates to a battery box production mould especially relates to a hot extrusion forming mould.

Background

In modern material processing, aluminum alloy extrusion molding techniques have been widely used. The extruder presses the aluminum bar heated to a certain temperature into a hot extrusion die, thereby forming different shapes.

The hot extrusion die is subject to severe conditions such as high temperature, high pressure, high abrasion, thermal fatigue and the like, and particularly, the die with a large die core section is easy to fail and scrap in advance due to phenomena such as die core washout, bridge cracking and the like, so that the service life of the die is influenced.

The hot extrusion die comprises an upper die and a lower die fixedly connected with the upper die, and a pressure reducing bridge is milled at one end of the upper die, which is far away from the lower die, in the prior art so as to reduce certain extrusion force. Since the pressure reducing bridge can only reduce partial pressure, the extrusion force received by the hot extrusion die is still larger in practice, so that the service life of the die cannot be effectively prolonged.

In view of this, it is necessary to design a hot extrusion molding die to further reduce the pressure applied on the hot extrusion molding die and prolong the service life of the hot extrusion molding die.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hot extrusion moulding mould to further reduce the pressure that hot extrusion moulding mould received, prolong hot extrusion moulding mould's life.

To achieve the purpose, the utility model adopts the following technical proposal:

a hot extrusion forming die comprises an upper die and a lower die detachably connected with the upper die, wherein the upper die is provided with a die core and two first branch flow holes and two second branch flow holes which are arranged around the die core;

the lower die is provided with a welding chamber, the die core and the welding chamber form a die cavity matched with a hollow rectangular product to be molded, the die cavity comprises two first molding parts and two second molding parts, the first branch holes correspond to the first molding parts one by one, and the second branch holes correspond to the second molding parts one by one;

go up the mould and keep away from the one end of lower mould still be provided with respectively with first reposition of redundant personnel hole with the one-level bridge of sinking of second reposition of redundant personnel hole intercommunication, one-level bridge sink with still be provided with the second grade bridge between the mold core, the second grade bridge sink is provided with the intercommunication the reposition of redundant personnel recess of first reposition of redundant personnel hole, just the tank bottom rounding off of reposition of redundant personnel recess.

In a specific embodiment, one second shunt hole is arranged between two adjacent first shunt holes.

In a specific embodiment, one end of the upper die, which is far away from the lower die, is provided with a first end surface;

the cross-sectional area of the first flow-dividing orifice is greater than the cross-sectional area of the second flow-dividing orifice in a plane parallel to the first end face.

In a specific embodiment, a spoiler is fixedly arranged in the welding chamber, is arranged adjacent to the first forming part and is parallel to the first forming part;

and the flow blocking sheet is arranged in the welding chamber corresponding to each first forming part.

In a specific embodiment, the upper die and the lower die are connected and fixed through a threaded connector.

In a particular embodiment, the primary sinking bridge has a greater sinking depth than the secondary sinking bridge.

In a specific embodiment, the bottom of the flow dividing groove and the side wall of the groove are rounded.

Compared with the prior art, the utility model discloses following beneficial effect has:

in this embodiment, the one-level bridge that sinks communicates first reposition of redundant personnel hole and second reposition of redundant personnel hole respectively, still is provided with the second grade bridge that sinks between one-level bridge and the mold core, and the second grade bridge that sinks is provided with the reposition of redundant personnel recess, and the tank bottom rounding off of reposition of redundant personnel recess plays the guide effect to the aluminum alloy that is heated, has reduced the pressure of the aluminum alloy that is heated to the mold core, is favorable to prolonging hot extrusion forming die's life.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor.

The structure, ratio, size and the like shown in the drawings of the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention does not have the substantial significance in the technology, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy which can be produced by the present invention and the achievable purpose.

Fig. 1 is a schematic cross-sectional view of a hot extrusion molding die according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a hot extrusion forming mold according to an embodiment of the present invention;

fig. 3 is a schematic view of a cavity provided by an embodiment of the present invention.

Illustration of the drawings: 1. an upper die; 11. a first diverter orifice; 12, dividing the flow hole; 2. a lower die; 21. a welding chamber; 211. a spoiler; 22. a cavity; 221. a first molding section; 222. a second molding section; 3. a mold core; 4. a first-stage sinking bridge; 5. secondary bridge sinking; 51. a shunt groove; 6. a threaded connection; 101. a first end surface.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. It should be noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

The embodiment of the utility model provides a hot extrusion moulding mould can reduce the pressure that hot extrusion moulding mould received, prolongs hot extrusion moulding mould's life.

Referring to fig. 1 to 3, the hot extrusion forming die includes an upper die 1 and a lower die 2 detachably connected to the upper die 1, the upper die 1 is provided with a die core 3, and two first branch flow holes 11 and two second branch flow holes 12 arranged around the die core 3;

wherein, a second shunt hole 12 is arranged between two adjacent first shunt holes 11;

the lower die 2 is provided with a welding chamber 21, the die core 3 and the welding chamber 21 form a die cavity 22 matched with a hollow rectangular product to be molded, the die cavity 22 comprises two first molding parts 221 and two second molding parts 222, the first branch flow holes 11 correspond to the first molding parts 221 one by one, and the second branch flow holes 12 correspond to the second molding parts 222 one by one;

it is worth mentioning that the two first forming portions 221 and the two second forming portions 222 enclose to form a hollow rectangular section. The aluminum alloy in the first branch hole 11 flows directly to the first forming portion 221, and the aluminum alloy in the second branch hole 12 is pressed to flow to the second forming portion 222.

One end of the upper die 1, which is far away from the lower die 2, is further provided with a first-level sinking bridge 4 which is respectively communicated with the first diversion hole 11 and the second diversion hole 12, a second-level sinking bridge 5 is further arranged between the first-level sinking bridge 4 and the die core 3, the second-level sinking bridge 5 is provided with a diversion groove 51 communicated with the first diversion hole 11, and the bottom of the diversion groove 51 is in smooth transition.

Specifically, the heated aluminum alloy moves towards the primary sinking bridge 4 and starts to flow into the first diversion hole 11 and the second diversion hole 12 after contacting the bottom of the primary sinking bridge 4, wherein the aluminum alloy heated against the primary sinking bridge 4 can flow towards the first diversion hole 11 along the diversion groove 51, and the extrusion force of the heated aluminum alloy on the upper die is reduced. The smooth transition of the groove bottom of the shunting groove 51 plays a role in guiding the heated aluminum alloy, reduces the pressure of the heated aluminum alloy on the mold core 3, and is beneficial to prolonging the service life of the hot extrusion forming mold.

It should be noted that, referring to fig. 3, the cross-sectional length of the first forming portion 221 is longer, the cross-sectional length of the second forming portion 222 is relatively shorter, and at this time, the cross-sectional area of the first forming portion 221 is larger, and the cross-sectional area of the second forming portion 222 is smaller. At this time, the inclination angle and the size of the flow cross-sectional area of the split groove 51 may be adjusted so that the heated aluminum alloy can be more favorably extruded toward the first molding portion 221.

Optionally, one end of the upper die 1 away from the lower die 2 has a first end face 101;

in a plane parallel to the first end face 101, the cross-sectional area of the first flow-dividing opening 11 is greater than the cross-sectional area of the second flow-dividing opening 12.

Specifically, the shunting groove 51 is provided in order to press more aluminum alloy toward the first shunting hole 11 and then toward the first forming portion 221, which meets the production requirements.

Optionally, a choke sheet 211 is fixedly disposed in the welding chamber 21, the choke sheet 211 is disposed adjacent to the first forming portion 221, and the choke sheet 211 is parallel to the first forming portion 221;

a flow blocking plate 211 is provided in the bonding chamber 21 corresponding to each first forming portion 221.

Specifically, due to the arrangement of the spoiler 211, the extrusion force exerted on the aluminum alloy in the first forming portion 221 and the second forming portion 222 is relatively consistent, the cavity can be filled with the aluminum alloy, and the quality of extrusion forming is improved.

Optionally, the upper die 1 and the lower die 2 are fixedly connected through a threaded connector 6.

Optionally, the sinking depth of the primary sinking bridge 4 is greater than the sinking depth of the secondary sinking bridge 5.

Specifically, the primary sinking bridge 4 bears a larger extrusion force than the secondary sinking bridge 5, and the arrangement of the secondary sinking bridge 5 further disperses the extrusion force.

Optionally, the bottom of the shunt groove 51 is rounded off to the side walls of the groove. It should be noted that the diversion grooves 51 are smoothly and obliquely arranged, so that the extrusion force is reduced, and the service life of the hot extrusion forming die is prolonged.

It should be noted that, the hot extrusion molding die in this embodiment is used for producing an aluminum alloy battery case or an aluminum alloy case for other purposes, and can effectively prolong the service life, and the existence of the shunting grooves 51 can effectively distribute the amount of aluminum alloy in different areas, homogenize the extrusion pressure between the first forming portion 221 and the second forming portion 222, and improve the uniformity of the material of the aluminum alloy case.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The hot extrusion forming die is characterized by comprising an upper die (1) and a lower die (2) detachably connected with the upper die (1), wherein the upper die (1) is provided with a die core (3), two first branch flow holes (11) and two second branch flow holes (12) which are arranged around the die core (3);

the lower die (2) is provided with a welding chamber (21), the die core (3) and the welding chamber (21) form a die cavity (22) matched with a hollow rectangular product to be formed, the die cavity (22) comprises two first forming parts (221) and two second forming parts (222), the first branch flow holes (11) correspond to the first forming parts (221) in a one-to-one mode, and the second branch flow holes (12) correspond to the second forming parts (222) in a one-to-one mode;

go up mould (1) and keep away from the one end of lower mould (2) still be provided with respectively with first reposition of redundant personnel hole (11) with one-level heavy bridge (4) of second reposition of redundant personnel hole (12) intercommunication, one-level heavy bridge (4) with still be provided with second grade heavy bridge (5) between mold core (3), second grade heavy bridge (5) are provided with the intercommunication reposition of redundant personnel recess (51) of first reposition of redundant personnel hole (11), just the tank bottom rounding off of reposition of redundant personnel recess (51).

2. A hot extrusion molding die according to claim 1, wherein one second slit hole (12) is provided between adjacent two first slit holes (11).

3. A hot extrusion molding die according to claim 1, wherein an end of the upper die (1) remote from the lower die (2) has a first end surface (101);

the cross-sectional area of the first flow-dividing opening (11) is greater than the cross-sectional area of the second flow-dividing opening (12) in a plane parallel to the first end face (101).

4. A hot extrusion molding die according to claim 1, wherein a spoiler (211) is fixedly provided in the welding chamber (21), the spoiler (211) is provided adjacent to the first molding portion (221), and the spoiler (211) is parallel to the first molding portion (221);

one spoiler (211) is arranged in the welding chamber (21) corresponding to each first forming part (221).

5. A hot extrusion molding die according to claim 1, wherein the upper die (1) and the lower die (2) are connected and fixed by a screw connection member (6).

6. The hot extrusion die as claimed in claim 1, wherein a sinking depth of said primary sinking bridge (4) is larger than a sinking depth of said secondary sinking bridge (5).

7. A hot extrusion molding die according to claim 1, wherein the bottom of the shunt groove (51) and the side wall of the groove are rounded.