CN201073658Y

CN201073658Y - Hot extrusion die for large cylinder pipe aluminum profiles

Info

Publication number: CN201073658Y
Application number: CNU2007200385160U
Authority: CN
Inventors: 唐先明; 雷以金; 徐汉新
Original assignee: JIANGSHUN MOULDS CO Ltd JIANGYIN
Current assignee: JIANGSHUN MOULDS CO Ltd JIANGYIN
Priority date: 2007-07-03
Filing date: 2007-07-03
Publication date: 2008-06-18
Anticipated expiration: 2017-07-03

Abstract

The utility model relates to a hot-extrusion die for aluminum profiles of large-sized cylinder pipes, comprising an upper die (1) and a lower die (2). The utility model is characterized in that six bridging positions (1.2) are arranged on a feed surface of the upper die (1); six divergent holes (1.1) are formed among the bridging positions (1.2) and extended to the periphery to form a plurality of internal expansion hole (1.1.1) and a plurality of external expansion hole (1.1.2); the bridging positions (1.2) of the feed surface of the upper die (1) is made into a pressure-relief bridge (1.2); the internal expansion holes (1.1.1) at a discharge end of the divergent hole (1.1) are S-shaped (1.3); a discharge surface of the upper die (1) adopts a sunken bridge (1.4); the expansion holes of the divergent holes (1.1) adopts the same angle, or the angle of the internal expansion hole (1.1.1) is less than that of the external expansion hole (1.1.2); the lower die (2) adopts a secondary welding chamber (2.2) of copying profiles; when an aluminum stick contacts with the upper die, aluminum stick is diverged and stirred through S-shaped deformation until integrated deep in the welding space, then compressed the secondary welding chamber for preforming, finally the aluminum profiles of cylinder pipe is obtained through a cavity. The utility model has an advantage of thoroughly overcoming the difficulty that the large-sized cylinder pipe is produced on smaller extruders.

Description

The hot-extrusion mold of large-scale cylinder tube class aluminium section bar

Technical field

The utility model relates to a kind of hot-extrusion mold, especially relates to a kind of hot-extrusion mold of large-scale cylinder tube class aluminium section bar.Belong to the aluminium section die technical field.

Background technology

As everyone knows, cylinder tubing hot-extrusion mold belongs to generous head mould tool (as Fig. 7).Because of the endoporus pressurized is bigger, so aspect section bar, do not allow to exist weld seam (seam line).And the cross section of this type of mould own is just bigger, and comparatively speaking, seam pressure just reduces, and this is avoided weld seam to bring very big difficulty to mould.Next is mould strength and life problems, and all the time, generous head mould tool is exactly the higher kind of scrappage in the industry, and its reason is exactly problems such as the core rod area is big, and the bridge location span is long, and the seam space is little.Solves this type of problem and preferably go up large-size extruder, but at present large-size extruder is not very universal that many section bars factory does not have the large-size extruder working condition, so largely still will overcome the above problems from Mould design.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of hot-extrusion mold that can avoid the large-scale cylinder tube class aluminium section bar of weld seam, life-span length well is provided.

The purpose of this utility model is achieved in that a kind of hot-extrusion mold of large-scale cylinder tube class aluminium section bar, be formed by stacking by before and after the upper die and lower die, described patrix charging face is provided with six bridge locations, form a tap hole between the bridge location, reaming and outer reaming in tap hole is expanded towards periphery and formed is characterized in that: the form that described patrix charging face bridge location is made the decompression bridge increases the charging area; The interior reaming of described tap hole discharge end is arranged to " S " type and is improved seam power; Described patrix goes out charge level and adopts heavy bridge form to strengthen the seam space; Described tap hole reaming is adopted the identical even interior reaming angle of inside and outside angle and is alleviated the direct pressure of aluminium stream to patrix than extending out the littler form of orifice angle, relative, the pressure of aluminium stream has been transferred to the seam chamber of counterdie, so just in time increase the seam power of counterdie, alleviated the pressure of patrix again.

Described counterdie, the seam chamber that employing is darker than common die, at utmost to increase the seam space, adopt the form of the secondary seam chamber of imitation section bar to come aluminium stream is carried out once predeformation on this basis again, and though the stream of the aluminium in the secondary seam chamber be form or seam pressure all than ideal in one-level seam chamber.

The utility model stirs through S deformation shape after the aluminium bar shunting when aluminium bar contact patrix, in darker seam space, integrate, again through the less secondary seam constant pressure in space contract, preformed, finally become the cylinder tube aluminium section bar by die cavity.Solved the difficult problem that large-scale cylinder tube is produced up hill and dale on less relatively extruder.

Description of drawings

Fig. 1 is the upper and lower mould assembling schematic diagram of the hot-extrusion mold of the large-scale cylinder tube class of the utility model aluminium section bar.

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

Fig. 3 is the patrix figure of the hot-extrusion mold of the large-scale cylinder tube class of the utility model aluminium section bar.

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

Fig. 5 is the counterdie figure of the hot-extrusion mold of the large-scale cylinder tube class of the utility model aluminium section bar.

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

Fig. 7 is the cylinder tube series products end view drawing that the utility model mould is wanted extrusion modling.

Among the figure: patrix 1, counterdie 2, tap hole 1.1, bridge location 1.2, " S " type 1.3, heavy bridge 1.4, core rod 1.5, interior reaming 1.1.1, outer reaming 1.1.2, one-level seam chamber 2.1, secondary seam chamber 2.2, die cavity 2.3.

The specific embodiment

Referring to Fig. 1～2, the utility model is a kind of hot-extrusion mold of large-scale cylinder tube class aluminium section bar, is formed by stacking by patrix 1 and counterdie 2 front and back.

Referring to Fig. 3～4, described patrix 1 charging face is provided with six bridge locations 1.2, form six tap holes 1.1 between the bridge location 1.2, reaming 1.1.1 and outer reaming 1.1.2 in tap hole 1.1 is expanded towards periphery and formed, patrix charging face bridge location 1.2 is made the form of decompression bridge 1.2, and the interior reaming 1.1.1 of tap hole 1.1 discharge ends is arranged to " S " type 1.3.Patrix 1 discharging face mould core 1.5 is arranged to the big square toes of imitative section bar.Patrix 1 goes out charge level and adopts heavy bridge 1.4 forms.Tap hole 1.1 reamings adopt the identical even interior reaming 1.1.1 angle of inside and outside angle than the littler form of outer reaming 1.1.2 angle.

Referring to Fig. 5～6, described counterdie 2 adopts the form of the secondary seam chamber 2.2 of imitation section bar.

Claims

1. the hot-extrusion mold of one kind large-scale cylinder tube class aluminium section bar, by being formed by stacking before and after patrix (1) and the counterdie (2), described patrix (1) charging face is provided with six bridge locations (1.2), form six tap holes (1.1) between the bridge location (1.2), reaming (1.1.1) and outer reaming (1.1.2) in tap hole (1.1) is expanded towards periphery and formed is characterized in that:

Described patrix (1) charging face bridge location (1.2) is made the form of decompression bridge (1.2),

" S " type (1.3) is arranged in the interior reaming (1.1.1) of described tap hole (1.1) discharge end, patrix (1) goes out charge level and adopts heavy bridge (1.4) form, and tap hole (1.1) reaming adopts the identical or interior reaming of inside and outside angle (1.1.1) angle than the little form of outer reaming (1.1.2) angle;

Described counterdie (2) adopts the form of the secondary seam chamber (2.2) of imitation section bar.