CN104001747A - Ultrasonic surface roughening micro groove group extrusion molding device - Google Patents

Ultrasonic surface roughening micro groove group extrusion molding device Download PDF

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Publication number
CN104001747A
CN104001747A CN201410218021.0A CN201410218021A CN104001747A CN 104001747 A CN104001747 A CN 104001747A CN 201410218021 A CN201410218021 A CN 201410218021A CN 104001747 A CN104001747 A CN 104001747A
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China
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extrusion molding
core
centrum
shunting
handpiece
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CN201410218021.0A
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CN104001747B (en
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汤勇
方朝斌
黄光汉
万珍平
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South China University of Technology SCUT
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South China University of Technology SCUT
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  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention discloses an ultrasonic surface roughening micro groove group extrusion molding device. The extrusion molding device comprises a machine head body, a cone, a shunting body bracket, a core die internally provided with a runner, and an outer edge die, wherein the machine head body is connected with the cone through a bolt; the shunting body bracket is fixed between joints of the machine head body and the cone; a filter screen is arranged at the left end of the machine head body; an ultrasonic transducer which can be used for generating ultrasonic waves for driving the core die to vibrate is arranged in the center of the core die; the outer edge die for defining the cross sections of finished products is fixedly arranged at the right end of the cone through a gland. The extrusion molding device is simple in structure, is convenient to implement, can be used for performing extrusion molding on aluminum materials, is high in production efficiency, and is low in cost. An ultrasonic surface roughening method is adopted in the production process, and grooves in the inner walls of aluminum sections have rough surfaces, so that application occasions are expanded.

Description

A kind of micro-groove group extrusion molding apparatus of ultrasonic wave rough surface
Technical field
The present invention relates to heat exchange forming materials field, particularly related to a kind of micro-groove group extrusion molding apparatus of ultrasonic wave rough surface.
Background technology
The method of augmentation of heat transfer mainly contains and improves heat transfer coefficient, expands heat transfer area and increase heat transfer temperature difference at present.The quantity that increases heat transfer pipe in certain heat exchanger space can effectively increase heat transfer area, and surface roughening can effectively improve the convective heat-transfer coefficient of material surface in addition, thereby improves surperficial heat radiation or heat absorption capacity, strengthening heat transfer.
Micro-groove group aluminium section bar is formed side by side by some micro-fluted tubes, has a large amount of capillary slot, is applied to new heat pipe, has higher heat exchange efficiency and less volume with respect to conventional heat pipe.Adopt the processing method of high speed spinning compared to traditional internal channel heat pipe, equipment needed thereby complexity, cost is high, and micro-groove group heat pipe adopts aluminium extruding forming method to produce, and production efficiency is high, and cost is low.But micro-fluted tube array that extrusion molding obtains, because flute surfaces is relatively smooth, does not possess surface roughness, and capillary attraction is little, and working medium can only rely on gravity reflux, therefore limit this micro-groove group and extruded the application of aluminium section bar on heat pipe.
Summary of the invention
For above-mentioned technical problem, the object of the present invention is to provide a kind of micro-groove group extrusion molding apparatus of ultrasonic wave rough surface.
Technical scheme of the present invention is as follows:
A kind of micro-groove group extrusion molding apparatus of ultrasonic wave rough surface, comprise handpiece body, centrum, shunting body support, inside establish the core of runner, collar extension mould, described handpiece body is connected by bolt with centrum, described shunting body support is fixed between handpiece body and centrum junction, the left end of described handpiece body is provided with filter screen, described handpiece body inner chamber is just provided with to filter screen place the interior shunting body and the external shunt body that are nested, described interior shunting body and external shunt body are all fixed on shunting body support left side, between external shunt body and handpiece body internal chamber wall, between described interior shunting body and external shunt body, be equipped with the space as flow manifold, described centrum inner chamber is provided with the core that is fixed on shunting body support right side, between described core and centrum internal chamber wall, leave the gap as runner, gap between this gap and external shunt body and handpiece body internal chamber wall connects, the center of described core is provided with the ultrasonic transducer that can produce ultrasonic wave and make core mould vibrating, the right-hand member of described centrum is fixedly installed and is useful on the collar extension mould that is defined as product shape of cross section by gland.
technique effect of the present invention:
The present invention installs ultrasonic unit at the core place of extrusion shaping machine draught animals mould, produces vibration thereby use ultrasonic wave to make core produce vibration on the aluminium section bar internal channel surface of the firm moulding contacting with core.Material particles, along with hyperacoustic effect condenses upon node place, forms periodic accumulation in space, form fine ripple struction on surface.Because ultrasonic wave has cavitation, can make a large amount of minute bubbles of the interior generation of material of melting, these minute bubbles can constantly move with the vibration of surrounding medium, grow up or vanish simultaneously, and while vanishing, surrounding liquid pours bubble suddenly and produces shock wave.Solidify through apparatus for supercooling, aluminium section bar internal channel forms the surface with certain roughness, thereby improve the convective heat-transfer coefficient strengthening heat transfer of material surface, strengthened the capillary attraction of internal channel simultaneously, overcome the ganoid shortcoming of internal channel of aluminium extrusion molding, widened the application of this aluminium section bar on heat pipe.
Brief description of the drawings
Fig. 1 is the position view of extrusion molding ultrasonic unit of the present invention.
Fig. 2 is that micro-groove group of the present invention extrudes aluminium profile structure schematic diagram.
In figure: 1. micro-groove group aluminium section bar; 2. handpiece body; 3. filter screen; 4. interior shunting body; 5. external shunt body;
6. shunting body support; 7. gland; 8. ultrasonic transducer; 9. core; 10. collar extension mould; 11. centrums.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, goal of the invention of the present invention is described in further detail, embodiment can not repeat one by one at this, but therefore embodiments of the present invention are not defined in following examples.
As shown in Figure 2, a kind of micro-groove group extrusion molding apparatus of ultrasonic wave rough surface, comprise handpiece body 2, centrum 11, shunting body support 6, inside establish the core 9 of runner, collar extension mould 10, described handpiece body 2 is connected by bolt with centrum 11, described shunting body support 6 is fixed between handpiece body 2 and centrum 11 junctions, the left end of described handpiece body 2 is provided with filter screen 3, described handpiece body 2 inner chambers are just provided with to filter screen 3 places the interior shunting body 4 and the external shunt body 5 that are nested, described interior shunting body 4 and external shunt body 5 are all fixed on shunting body support 6 left sides, between external shunt body 5 and handpiece body 2 internal chamber walls, between described interior shunting body 4 and external shunt body 5, be equipped with the space as flow manifold, described centrum 11 inner chambers are provided with the core 9 that is fixed on shunting body support 6 right sides, between described core 9 and centrum 11 internal chamber walls, leave the gap as runner, gap between this gap and external shunt body 5 and handpiece body 2 internal chamber walls connects, the center of described core 9 is provided with and can produces the ultrasonic transducer 8 that ultrasonic wave vibrates core 9, the right-hand member of described centrum 11 is fixedly installed collar extension mould 10 by gland 7.
Carry out extrusion molding and add man-hour, the aluminium material of melting is pressed through to filter screen 3, and aluminium material, through interior shunting body 4 and external shunt body 5, arrives core 9 places of head, then by thering is the collar extension mould 7 of this aluminum profile cross section shape, thereby obtain micro-groove group aluminium section bar of moulding.Ultrasonic transducer 8 is arranged on core 9 places, when extrusion molding, utilize ultrasonic wave to make core 9 produce vibration, aluminium section bar internal channel surface in the firm moulding contacting with core 9 produces vibration, in the process of aluminium section bar extrusion molding, adopt the method for ultrasonic wave rough surface, utilize ultrasonic wave to make the material of melting produce mechanical oscillation, material particles is along with hyperacoustic effect condenses upon node place, form periodic accumulation in space, form fine ripple struction on surface; On the other hand, because ultrasonic wave has cavitation, can make a large amount of minute bubbles of the interior generation of material of melting, these minute bubbles can constantly move with the vibration of surrounding medium, grow up or vanish, while vanishing, surrounding liquid pours bubble suddenly and produces shock wave, make the aluminium shape surface roughening after cooling forming, thereby improve material surface heat radiation or heat absorption capacity, strengthening heat transfer, and increase the capillary attraction of capillary groove structure, overcome the ganoid shortcoming of internal channel of aluminium extrusion molding, widened the application of this aluminium section bar on heat pipe.
Fig. 1 is that micro-groove group of embodiment extrusion molding extrudes aluminium profile structure schematic diagram.
The profile frame of micro-groove group aluminium section bar 1 is thin plate, be arranged side by side micro-fluted tube of many of inside, form micro-fluted tube array, micro-fluted tube inwall of described array has capillary groove structure and has rough surface, and profile thin plate and micro-fluted tube array are overall structures.
Aspect heat exchanger augmentation of heat transfer, this aluminium profile structure compactness, can effectively increase the heat transfer area of unit volume, and surface roughening can effectively improve the convective heat-transfer coefficient of material surface, thereby improves surperficial heat radiation or heat absorption capacity; In heat pipe application aspect, micro-groove group aluminium section bar has a large amount of capillary slot, there is higher heat exchange efficiency and less volume with respect to conventional heat pipe, realize the volume that significantly reduces heat pipe under identical radiating efficiency, save material, and flute surfaces roughening, contribute to increase capillary attraction.
The above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all embodiments.All any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in the protection domain of the claims in the present invention.

Claims (1)

1. micro-groove group extrusion molding apparatus of a ultrasonic wave rough surface, it is characterized in that: comprise handpiece body (2), centrum (11), shunting body support (6), inside establish the core (9) of runner, collar extension mould (10), described handpiece body (2) is connected by bolt with centrum (11), described shunting body support (6) is fixed between handpiece body (2) and centrum (11) junction, the left end of described handpiece body (2) is provided with filter screen (3), described handpiece body (2) inner chamber just locates to be provided with to filter screen (3) the interior shunting body (4) and the external shunt body (5) that are nested, described interior shunting body (4) and external shunt body (5) are all fixed on shunting body support (6) left side, between external shunt body (5) and handpiece body (2) internal chamber wall, between described interior shunting body (4) and external shunt body (5), be equipped with the space as flow manifold, described centrum (11) inner chamber is provided with the core (9) that is fixed on shunting body support (6) right side, between described core (9) and centrum (11) internal chamber wall, leave the gap as runner, gap between this gap and external shunt body (5) and handpiece body (2) internal chamber wall connects, the center of described core (9) is provided with and can produces the ultrasonic transducer (8) that ultrasonic wave vibrates core (9), the right-hand member of described centrum (11) is fixedly installed and is useful on the collar extension mould (10) that is defined as product shape of cross section by gland (7).
CN201410218021.0A 2014-05-22 2014-05-22 A kind of very low power group extrusion molding apparatus of ultrasonic wave rough surface Active CN104001747B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104307910A (en) * 2014-10-20 2015-01-28 江汉大学 Ultrasonic wave vibration equal channel angular extrusion combined mold
CN109405610A (en) * 2018-11-27 2019-03-01 华南理工大学 A kind of wick structure and preparation method thereof
CN110613172A (en) * 2019-09-30 2019-12-27 深圳麦克韦尔科技有限公司 Electronic atomization device and atomizer thereof
CN112588827A (en) * 2020-11-25 2021-04-02 之江实验室 Preparation device and method of micro-flow tube for intelligent robot motor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5479150A (en) * 1977-12-07 1979-06-23 Kobe Steel Ltd Extrusion method and its dies for ribbed double pipe
JPS5797817A (en) * 1980-12-06 1982-06-17 Nikkei Giken:Kk Die for extrusion of finned die material
EP0595061A1 (en) * 1992-10-01 1994-05-04 Mitsubishi Aluminum Co.,Ltd. Extrusion die device and die insert therefor
JP2001191109A (en) * 1999-12-28 2001-07-17 Yano Engineering:Kk Extruding die for hollow material, and mandrel for extruding die
JP2011079046A (en) * 2009-10-09 2011-04-21 Kanazawa Univ Extrusion processing apparatus, and extrusion method
CN203862712U (en) * 2014-05-22 2014-10-08 华南理工大学 Micro-groove group extruding and forming device for roughing surfaces through ultrasonic waves

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5479150A (en) * 1977-12-07 1979-06-23 Kobe Steel Ltd Extrusion method and its dies for ribbed double pipe
JPS5797817A (en) * 1980-12-06 1982-06-17 Nikkei Giken:Kk Die for extrusion of finned die material
EP0595061A1 (en) * 1992-10-01 1994-05-04 Mitsubishi Aluminum Co.,Ltd. Extrusion die device and die insert therefor
JP2001191109A (en) * 1999-12-28 2001-07-17 Yano Engineering:Kk Extruding die for hollow material, and mandrel for extruding die
JP2011079046A (en) * 2009-10-09 2011-04-21 Kanazawa Univ Extrusion processing apparatus, and extrusion method
CN203862712U (en) * 2014-05-22 2014-10-08 华南理工大学 Micro-groove group extruding and forming device for roughing surfaces through ultrasonic waves

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104307910A (en) * 2014-10-20 2015-01-28 江汉大学 Ultrasonic wave vibration equal channel angular extrusion combined mold
CN109405610A (en) * 2018-11-27 2019-03-01 华南理工大学 A kind of wick structure and preparation method thereof
CN110613172A (en) * 2019-09-30 2019-12-27 深圳麦克韦尔科技有限公司 Electronic atomization device and atomizer thereof
CN110613172B (en) * 2019-09-30 2023-04-18 深圳麦克韦尔科技有限公司 Electronic atomization device and atomizer thereof
CN112588827A (en) * 2020-11-25 2021-04-02 之江实验室 Preparation device and method of micro-flow tube for intelligent robot motor

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