CN201271667Y

CN201271667Y - Hot extrusion die for control box of electric vehicle

Info

Publication number: CN201271667Y
Application number: CNU2008200395858U
Authority: CN
Inventors: 周开; 陈建华
Original assignee: JIANGSHUN MOULDS CO Ltd JIANGYIN
Current assignee: JIANGSHUN MOULDS CO Ltd JIANGYIN
Priority date: 2008-09-01
Filing date: 2008-09-01
Publication date: 2009-07-15
Anticipated expiration: 2018-09-01

Abstract

The utility model relates to a hot extrusion die of electric vehicle control box, which is mainly used for the hot extrusion of electric vehicle control box aluminum profile with greatly different wall thickness and more toothlets. The hot extrusion die comprises an upper die (1) and a lower die (2), wherein, four relief-holes (1.1) are symmetrically arranged on the feed surface of the upper die (1), and the four relief-holes (1.1) are expanding holes; four relief-bridges (1.2) are formed among the four relief-holes (1.1); a false die core (1.3) which is protruded downwards is arranged in the middle of the discharge surface of the upper die (1), and a welding chamber (2.1) is arranged on the feed surface of the lower die (2); and the cross-section of the welding chamber (2.1) is butterfly-shaped, and a die cavity (2.2) is arranged at the back of the welding chamber (2.1). The utility model can block the solid part of the lower die to reasonably control the flow speed of the thick part of the wall thickness of the aluminum profile; therefore, the aluminum profile of the electric vehicle control box profile can be efficiently produced.

Description

Electric motor car control box hot-extrusion mold

(1) technical field

The utility model relates to a kind of aluminium section hot-extrusion die.Be mainly used in the hot extrusion of the more electric motor car control box aluminium section bar of the more large and small tooth of wall thickness great disparity.Belong to the mold machining technology field.

(2) background technology

21st century is the epoch of " epoch are called environmental protection ", not only requires people to pay attention to energy savings, the more important thing is to require people to pay attention to living environment and environmental protection more, to realize the sustainable development of society.The exhaust emission of fuel oil and tail gas is the primary pollution source of following big and medium-sized cities atmosphere pollution.Develop the inexorable trend that electric vehicle is undoubtedly future development, also be the demand that meets the environmental protection revolution for this reason.

Electric motor car is light, and speed is moderate, and safety is inexpensive, the noiselessness tail gas pollution, and it is little to take the parking stall, can improve the traffic efficiency of bicycle lane greatly, is fit to very much single short distance trip in the city, has the incomparable advantage of other vehicles.That electric motor car can become is popular, the main vehicles of wage-earners.And the electric motor car control box is the heart of electric motor car and since its structure particularity, make that the wall thickness great disparity of section bar is bigger, secondly for the ease of heat radiation, the periphery of section bar has been covered with little tooth, as Fig. 7.Bring very big difficulty for like this production of section bar! One: difficult forming.Its two: size is difficult to reach the drawing requirement.Make the section bar production cost improve widely.Trace it to its cause, be because: patrix goes out charge level core rod is not set, and can not block the solid section of counterdie, can not control the flow velocity of section bar heavy wall thickness portion, makes section bar discharging stably; Counterdie seam chamber is adopted square, can not protect patrix shunting bridge, makes the dead band that has of shunting bridge bridge root place metal flow.

(3) summary of the invention

The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of solid section that can block counterdie is provided, so that reasonably control the aluminium section hot-extrusion die of energy High-efficient Production electric motor car control box section bar of the flow velocity of section bar heavy wall thickness portion.

The purpose of this utility model is achieved in that a kind of electric motor car control box hot-extrusion mold, comprises upper die and lower die,

Described patrix charging is in the face of claiming to be furnished with four tap holes, and four tap holes adopt the reaming form, forms four shunting bridges between four tap holes, and patrix goes out middle protrusion of charge level downwards and is provided with false core rod, and this vacation core rod is raised, from counterdie seam chamber 6mm,

Described counterdie charging face is provided with the seam chamber, and the seam chamber cross-section is butterfly, and seam is provided with die cavity behind the chamber.

The utility model is in extrusion process, and aluminium enters counterdie seam chamber by the patrix tap hole, finally flows out by the counterdie die cavity.The utility model goes out the false core rod that charge level is provided with at patrix, and the false core rod of patrix is raised, and from counterdie seam chamber 6mm, blocks the solid section of counterdie, so that reasonably control the flow velocity of section bar heavy wall thickness portion, makes section bar discharging stably.Because the patrix tap hole adopts reaming, has increased the area of counterdie seam chamber, more helps the seam of section bar.Butterfly is adopted in counterdie seam chamber, leaves boss with patrix shunting bridge bridge pier corresponding section, can protect patrix shunting bridge, also can eliminate the dead band of shunting bridge bridge root place metal flow simultaneously.

(4) description of drawings

Fig. 1 is the front view of the utility model mould.

Fig. 2 is the A-A cut-away view of Fig. 1.

Fig. 3 is a patrix front view of the present utility model.

Fig. 4 is the B-B cut-away view of Fig. 3.

Fig. 5 is the front view of counterdie of the present utility model.

Fig. 6 is the C-C cut-away view of Fig. 5.

The end view drawing of the electric motor car control box aluminium section bar that Fig. 7 relates to for the utility model.

Among the figure: patrix 1, counterdie 2; Tap hole 1.1, shunting bridge 1.2, false core rod 1.3, seam chamber 2.1, die cavity 2.2.

(5) specific embodiment

Referring to Fig. 1～2, the electric motor car control box hot-extrusion mold that the utility model relates to is formed by stacking by patrix 1 and counterdie 2 front and back, and is middle with two screws and two pin assemblings (close-fitting).

Referring to Fig. 3～4, described patrix 1 charging is in the face of claiming that being furnished with 1.1, four tap holes of four tap holes 1.1 adopts reaming type, forms four shunting bridges 1.2 between four tap holes 1.1.The downward protrusion was provided with false core rod 1.3 in the middle of patrix 1 went out charge level.This vacation core rod 1.3 is raised, from counterdie seam chamber 6mm.

Referring to Fig. 5～6, described counterdie 2 charging faces are provided with seam chamber 2.1, and seam chamber 2.1 cross sections are butterfly, are provided with die cavity 2.2 behind the seam chamber 2.1.

Claims

1, a kind of electric motor car control box hot-extrusion mold comprises patrix (1) and counterdie (2), it is characterized in that:

Described patrix (1) charging is in the face of claiming to be furnished with four tap holes (1.1), four tap holes (1.1) adopt the reaming form, form four shunting bridges (1.2) between four tap holes (1.1), the downward protrusion was provided with false core rod (1.3) in the middle of patrix (1) went out charge level, this vacation core rod (1.3) is raised, from counterdie seam chamber 6mm

Described counterdie (2) charging face is provided with seam chamber (2.1), and seam chamber (2.1) cross section is butterfly, is provided with die cavity (2.2) after seam chamber (2.1).