CN213052121U

CN213052121U - Aluminum alloy micro-channel profile extrusion die

Info

Publication number: CN213052121U
Application number: CN202021404567.2U
Authority: CN
Inventors: 闫光立; 许泽兵; 刘学锦; 丁成豹; 王太敏; 李洪坡
Original assignee: Shandong Tiangong Geotechnical Engineering Equipment Co ltd
Current assignee: Shandong Tiangong Geotechnical Engineering Equipment Co ltd
Priority date: 2020-07-16
Filing date: 2020-07-16
Publication date: 2021-04-27
Anticipated expiration: 2030-07-16

Abstract

The utility model belongs to the technical field of the heat dissipation, relate to the aluminum alloy microchannel, especially relate to an aluminum alloy microchannel section bar extrusion tooling. The mold comprises an upper mold, wherein the upper mold is provided with two symmetrical shunting holes, one side of each shunting hole is a straight side, the other side of each shunting hole is an arc, and the straight sides of the two shunting holes are opposite; go up the mould in two reposition of redundant personnel hole middle parts and be equipped with the mould core groove, the mould core inslot is inserted and is gone up the mould core, it is equipped with a plurality of equidistant mould needles side by side to go up mould core tip, the mould needle includes the stand that two intervals set up and sets up the shaping piece at the stand top, the shaping piece covers the top at two stands, the utility model discloses simple structure, processing convenience just can reappear some basis on improve, are fit for using widely on a large scale.

Description

Aluminum alloy micro-channel profile extrusion die

Technical Field

The utility model belongs to the technical field of the heat dissipation, relate to the aluminum alloy microchannel, especially relate to an aluminum alloy microchannel section bar extrusion tooling.

Background

Microchannels, also known as microchannel heat exchangers, are heat exchangers having channel equivalent diameters of 10 to 1000 μm. The heat exchanger has tens of fine flow channels in the flat tube, and the fine flow channels are connected to the circular headers at both ends of the flat tube. The header is internally provided with a baffle plate to divide the heat exchanger flow passage into a plurality of flows.

The existing micro-channel is mainly obtained by heating aluminum alloy and then extruding the aluminum alloy through an extrusion die, the existing extrusion die mainly comprises an upper die and a lower die, the upper die and the lower die are tightly matched, the upper die is provided with two symmetrical shunting holes, one side of each shunting hole is a straight edge, the other side of each shunting hole is an arc, and the straight edges of the two shunting holes are opposite; a die core groove is formed in the middle of the two shunting holes in the upper die, an upper die core is inserted into the die core groove, a welding chamber is arranged at the bottom of the upper die and corresponds to the shunting holes, and a plurality of die needles with equal intervals are arranged at the end part of the upper die core side by side; the lower die core is arranged at the position of the lower die corresponding to the die core groove, and the upper die core can be concentrically matched with the lower die core.

The existence mainly used of mould needle forms the passageway of microchannel, nevertheless because the extrusion ratio of the flat pipe of microchannel is very big, the extrusion ratio of a lot of models exceeds 500, and the extrusion in-process, frictional resistance is very big, appears flat pipe strengthening rib feed not enough very easily, leads to the strengthening rib to become the infundibulate by the rectangle, and then forms the wastrel, causes the manufacturing cost of enterprise to increase.

SUMMERY OF THE UTILITY MODEL

The utility model discloses extrude the technical problem who exists to foretell microchannel, provide a reasonable in design, simple structure and can improve the aluminum alloy microchannel section bar extrusion tooling of yield.

In order to achieve the above object, the present invention adopts a technical solution in that this embodiment provides an aluminum alloy microchannel profile extrusion die, which includes an upper die, wherein the upper die is provided with two symmetrical shunting holes, one side of each shunting hole is a straight side, the other side of each shunting hole is an arc, and the straight sides of the two shunting holes are opposite; the mould comprises an upper mould and a lower mould, and is characterized in that a mould core groove is formed in the middle of two shunting holes in the upper mould, an upper mould core is inserted into the mould core groove, a plurality of equidistant mould needles are arranged at the end part of the upper mould core side by side, each mould needle comprises two stand columns arranged at intervals and a forming block arranged at the tops of the stand columns, and the forming block covers the tops of the two stand columns.

Preferably, a guide block is further arranged between the upright post and the forming block, and arc surface treatment is performed between the guide block and the upright post and between the guide block and the forming block.

Compared with the prior art, the utility model has the advantages and positive effects that,

1. the utility model provides an aluminum alloy microchannel section bar extrusion tooling improves through the structure to current mould needle, utilizes the stand that the interval set up, makes the material in extrusion process, and the feed of the strengthening rib at middle part increases, and then has reduced the problem that the strengthening rib warp because of the feed is not enough to lead to, simultaneously, the utility model discloses simple structure, processing convenience just can improve on reappearing some basis, are fit for using widely on a large scale.

Drawings

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

FIG. 1 is a schematic structural view of an aluminum alloy microchannel profile extrusion die provided in example 1;

in the above figures, 1, the upper die; 2. a shunt hole; 3. an upper die core; 4. a mould needle; 41. a column; 42. a guide block; 43. and (5) forming the block.

Detailed Description

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the limitations of the specific embodiments of the present disclosure.

Embodiment 1, as shown in fig. 1, the aluminum alloy microchannel profile extrusion die provided in this embodiment is to solve the technical problem of yield of the existing aluminum alloy microchannel profile, and because the aluminum alloy microchannel profile extrusion die provided in this embodiment is only improved with respect to an upper die 1, a lower die is not described, for this reason, the aluminum alloy microchannel profile extrusion die provided in this embodiment includes an upper die 1, two symmetrical flow distribution holes 2 are provided on the upper die 1, one side of the flow distribution hole 2 is a straight side, the other side is an arc, and the straight sides of the two flow distribution holes 2 are opposite; the middle part of the two branched flow holes 2 in the upper die 1 is provided with a die core groove, an upper die core 3 is inserted into the die core groove, the end part of the upper die core 3 is provided with a plurality of die needles 4 at equal intervals side by side, and the above structure is a conventional structure, so that detailed description is omitted in the embodiment.

In order to supplement the materials at the reinforcing ribs of the micro-channel, in the embodiment, the traditional rectangular parallelepiped pillar 41 is changed into two cylindrical pillars 41 arranged at intervals, so that the materials can be concentrated to the two sides and the middle part of the pillar 41 in the extrusion process, and the shape of the forming block 43 is unchanged, so that the materials at the reinforcing ribs of the micro-channel are filled to other positions in the whole extrusion process, so that the sufficient materials at the reinforcing ribs are ensured, meanwhile, the diameter of the pillar 41 is consistent with the width of the traditional pillar 41, so that the materials at other parts of the micro-channel are not influenced, the yield of the formed micro-channel is increased, and meanwhile, the supporting mode of the two pillars 41 can also meet the supporting strength.

In order to enable the material to smoothly transit from the upright column 41 to the forming block 43, in this embodiment, a guide block 42 is further disposed between the upright column 41 and the forming block 43, the width of the guide block 42 is larger than the diameter of the upright column 41 and smaller than the width of the forming block 43, and cambered surfaces are formed between the guide block 42 and the upright column 41 and between the guide block 42 and the forming block 43. The purpose of this arrangement is not only to make the material smoothly transit, but also to enhance the connection between the upright 41 and the forming block 43, ensuring the stability of the whole mould needle 4.

Through foretell setting, through improving current mould needle 4's structure, the effectual volume that improves microchannel strengthening rib department material, and then solved the not enough problem of current mould microchannel strengthening rib department feed.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims

1. An aluminum alloy micro-channel profile extrusion die comprises an upper die, wherein the upper die is provided with two symmetrical shunting holes, one side of each shunting hole is a straight edge, the other side of each shunting hole is an arc, and the straight edges of the two shunting holes are opposite; the mould comprises an upper mould and a lower mould, and is characterized in that a mould core groove is formed in the middle of two shunting holes in the upper mould, an upper mould core is inserted into the mould core groove, and a plurality of equidistant mould needles are arranged at the end part of the upper mould core side by side.

2. The aluminum alloy microchannel profile extruding die as recited in claim 1, wherein a guide block is further provided between the upright post and the forming block, and arc surface treatment is performed between the guide block and the upright post and between the guide block and the forming block.