Extrusion forming die for cabin component

Patent metadata

Field	Value
Publication number	US-2021121926-A1
Application number	US-202017077889-A
Country	US
Kind code	A1
Filing date	Oct 22, 2020
Priority date	Oct 25, 2019
Publication date	Apr 29, 2021
Grant date	—

Abstract

The present disclosure provides an extrusion forming die for a cabin component. The extrusion forming die for a cabin component comprises an upper die assembly, a lower die assembly and a combined concave die. The upper die assembly comprises an extrusion punch (3), and the combined concave die comprises an M-shaped outer concave die (4) having a hollow cavity matched with the extrusion punch (3), and a W-shaped inner concave die (5) having a rotary cavity. The W-shaped inner concave die (5) is arranged in the rotary cavity of the M-shaped outer concave die (4) in a matched manner, and the rotary cavity and the hollow cavity are matched to form a rotary extrusion die cavity (18) with a W-shaped longitudinal section.

First claim

1 . An extrusion forming die for a cabin component, comprising an upper die assembly, a lower die assembly and a combined concave die; the upper die assembly comprises an extrusion punch ( 3 ), and the combined concave die comprises an M-shaped outer concave die ( 4 ) having a hollow cavity matched with the extrusion punch ( 3 ), and a W-shaped inner concave die ( 5 ) having a rotary cavity; the W-shaped inner concave die ( 5 ) is arranged in the rotary cavity of the M-shaped outer concave die ( 4 ) in a matched manner, and the rotary cavity and the hollow cavity are matched to form a rotary extrusion die cavity ( 18 ) with a W-shaped longitudinal section.

2 . The extrusion forming die for a cabin component according to claim 1 , wherein, in the longitudinal section passing through a rotation center of the rotary extrusion die cavity, the rotary extrusion die cavity comprises an extrusion section ( 19 ), a back pressure section ( 20 ) and a shaping section ( 21 ) connected successively; the extrusion section ( 19 ) comprises an upper wall surface which is a stepped differential-velocity extrusion step ( 22 ), and a lower wall surface having a guide slope section ( 23 ) connected to the back pressure section ( 20 ); and an included angle formed between the guide slope section ( 23 ) and the shaping section ( 21 ) is less than or equal to 80 degrees.

3 . The extrusion forming die for a cabin component according to claim 2 , wherein the entire lower wall surface is the guide slope section ( 23 ), and the upper wall surface and the lower wall surface form a opening reduction structure along the direction close to the back pressure section ( 20 ).

4 . The extrusion forming die for a cabin component according to claim 2 , wherein the lower wall surface further comprises a stepped differential-velocity extrusion step ( 22 ) connected to one end of the guide slope section ( 23 ) away from the back pressure section ( 20 ).

5 . The extrusion forming die for a cabin component according to claim 4 , wherein the height of the stepped differential-velocity extrusion step ( 22 ) of the lower wall surface is less than that of the upper wall surface.

6 . The extrusion forming die for a cabin component according to claim 2 , wherein a wall section of the stepped differential-velocity extrusion step ( 22 ) of the upper wall surface connected to the back pressure section ( 20 ) is parallel to the guide slope section ( 23 ).

7 . The extrusion forming die for a cabin component according to claim 2 , wherein an included angle formed between the guide slope section ( 23 ) and the shaping section ( 21 ) is 75 degrees.

8 . The extrusion forming die for a cabin component according to claim 1 , wherein the M-shaped outer concave die ( 4 ) is of an integral structure, and an air passage ( 14 ) communicated with the rotary extrusion die cavity ( 18 ) is arranged on the M-shaped outer concave die ( 4 ).

9 . The extrusion forming die for a cabin component according to claim 8 , wherein an unloading device ( 13 ), which is adapted to the structure of the rotary extrusion die cavity ( 18 ), is arranged on the top of the W-shaped inner concave die ( 5 ), and a communication passage communicated with the air passage ( 14 ) is arranged on the unloading device ( 13 ).

10 . The extrusion forming die for a cabin component according to claim 9 , wherein the unloading device ( 13 ) is detachably and fixedly mounted on the top of the W-shaped inner concave die ( 5 ).

11 . The extrusion forming die for a cabin component according to claim 8 , wherein, in the longitudinal section passing through a rotation center of the rotary extrusion die cavity, the rotary extrusion die cavity comprises an extrusion section ( 19 ), a back pressure section ( 20 ) and a shaping section ( 21 ) connected successively; the extrusion section ( 19 ) comprises an upper wall surface which is a stepped differential-velocity extrusion step ( 22 ), and a lower wall surface having a guide slope section ( 23 ) connected to the back pressure section ( 20 ); and an included angle formed between the guide slope section ( 23 ) and the shaping section ( 21 ) is less than or equal to 80 degrees.

12 . The extrusion forming die for a cabin component according to claim 11 , wherein the entire lower wall surface is the guide slope section ( 23 ), and the upper wall surface and the lower wall surface form a opening reduction structure along the direction close to the back pressure section ( 20 ).

13 . The extrusion forming die for a cabin component according to claim 11 , wherein the lower wall surface further comprises a stepped differential-velocity extrusion step ( 22 ) connected to one end of the guide slope section ( 23 ) away from the back pressure section ( 20 ).

14 . The extrusion forming die for a cabin component according to claim 13 , wherein the height of the stepped differential-velocity extrusion step ( 22 ) of the lower wall surface is less than that of the upper wall surface.

15 . The extrusion forming die for a cabin component according to claim 11 , wherein a wall section of the stepped differential-velocity extrusion step ( 22 ) of the upper wall surface connected to the back pressure section ( 20 ) is parallel to the guide slope section ( 23 ).

16 . The extrusion forming die for a cabin component according to claim 11 , wherein an included angle formed between the guide slope section ( 23 ) and the shaping section ( 21 ) is 75 degrees.

Assignees

• Univ North China

Inventors

• Zhao Xi
• Kan Shuailing
• Zhang Zhimin
• Gao Pengcheng
• Li Shuchang

Classifications

• B21C23/14 Primary

  Making other products · CPC title

• B21C29/04

  of press heads, dies, or mandrels · CPC title

• B21C25/02

  Dies · CPC title

• B21C29/003

  Cooling or heating of work · CPC title

• B21C23/20

  by backward extrusion · CPC title