CN110102588A - A kind of preparation facilities revolving wing aluminum pipe and the preparation process using it - Google Patents
A kind of preparation facilities revolving wing aluminum pipe and the preparation process using it Download PDFInfo
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- CN110102588A CN110102588A CN201910435426.2A CN201910435426A CN110102588A CN 110102588 A CN110102588 A CN 110102588A CN 201910435426 A CN201910435426 A CN 201910435426A CN 110102588 A CN110102588 A CN 110102588A
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- aluminum pipe
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- mould
- rotation
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 95
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 95
- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- 238000001125 extrusion Methods 0.000 claims abstract description 116
- 238000010438 heat treatment Methods 0.000 claims abstract description 49
- 238000000465 moulding Methods 0.000 claims abstract description 11
- 230000006835 compression Effects 0.000 claims abstract description 5
- 238000007906 compression Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 42
- 238000007789 sealing Methods 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 14
- 230000006698 induction Effects 0.000 claims description 8
- 239000010425 asbestos Substances 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 5
- 229910052895 riebeckite Inorganic materials 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000004411 aluminium Substances 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/08—Making wire, bars, tubes
- B21C23/10—Making finned tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C29/00—Cooling or heating work or parts of the extrusion press; Gas treatment of work
- B21C29/04—Cooling or heating of press heads, dies or mandrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C31/00—Control devices, e.g. for regulating the pressing speed or temperature of metal; Measuring devices, e.g. for temperature of metal, combined with or specially adapted for use in connection with extrusion presses
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
Abstract
The invention discloses a kind of preparation facilities for revolving wing aluminum pipe and the preparation process for applying it, including machine table, it is equipped with extrusion cylinder in the horizontal direction in the machine table, heating mechanism is equipped on extrusion cylinder, the heating mechanism heats extrusion cylinder；One end of the extrusion cylinder is connect with the extrusion head of external compression mechanism, and one end of the extrusion head is located in extrusion cylinder；The one end of the extrusion head being located in extrusion cylinder is equipped with squeezing needle in the horizontal direction；The other end of the extrusion cylinder is equipped with rotary squeezing mould by fixing seat, and die hole is formed in the middle part of the rotary squeezing mould, and the die hole, which is circumferentially connected, is connected with several fin molding holes；The rotary squeezing mould is connect with rotary drive mechanism, and the rotary drive mechanism driving rotary squeezing mould is rotated using the central axes of rotary squeezing mould as shaft；The present invention can squeeze out the aluminum pipe that spiral helicine fin and pipeline are integrally formed, and preparation process is simple, and heat transfer effect is good.
Description
Technical field
The present invention relates to technical field of heat exchangers more particularly to a kind of preparation facilities for revolving wing aluminum pipe and using its system
Standby technique.
Background technique
Existing wind cooling refrigerator and refrigerator mostly use finned heat exchanger, fin with heat exchanger (including evaporator and condenser)
Formula heat exchanger is a kind of that several metal fins are nested or is wrapped in Tube Sheet of Heat Exchanger road and manufactured heat exchanger, heat exchanger principle
Exchange heat for refrigeration working medium in pipe and pipeline, pipeline and fin contacts conduct heat, pipeline and fin again with cooling working medium (mostly air)
Heat exchange.
Fin improves heat exchange efficiency by the heat exchange area of increase heat exchanger in finned heat exchanger.But it is existing finned
Heat exchanger has the disadvantages that 1, complex procedures, and specific fin need to be individually produced by specific tooling or mold and is changed
Hot device pipeline, then by fin nesting or it is wrapped in Tube Sheet of Heat Exchanger road, some is then to take heat exchange manifold being divided into several segments,
Pipeline is welded together again after putting on fin；2, it is conducted heat between fin and pipeline using physical contact, be easy to cause contact
It is insufficient, influence heat transfer efficiency, or physical contact is excessively, fin is damaged pipeline, and corrosion leakage is easily caused.
Summary of the invention
It is integrally formed with pipeline it is an object of the invention to proposing a kind of spiral helicine fin, preparation process is simple, changes
The good preparation facilities for revolving wing aluminum pipe of thermal effect and the preparation process using it.
To achieve this purpose, the present invention adopts the following technical scheme: a kind of preparation facilities for revolving wing aluminum pipe, including processing
Platform is equipped with heating mechanism, the heating mechanism pair wherein being equipped with extrusion cylinder in the machine table in the horizontal direction on extrusion cylinder
Extrusion cylinder is heated；One end of the extrusion cylinder is connect with the extrusion head of external compression mechanism, one end position of the extrusion head
In in extrusion cylinder；The one end of the extrusion head being located in extrusion cylinder is equipped with squeezing needle in the horizontal direction；The extrusion cylinder it is another
One end is equipped with rotary squeezing mould by fixing seat, die hole is formed in the middle part of the rotary squeezing mould, the die hole is circumferentially
Conducting is connected with several fin molding holes；The outer diameter of the squeezing needle is less than the internal diameter of die hole, the central axes of the squeezing needle, rotation
The central axes of the central axes and extrusion cylinder that turn extrusion die are respectively positioned on same straight line；The rotary squeezing mould and rotary drive mechanism
Connection, the rotary drive mechanism driving rotary squeezing mould are rotated using the central axes of rotary squeezing mould as shaft.
Preferably, one end of the close extrusion head of squeezing needle periphery be equipped with dummy block, the outer diameter of the dummy block with
The internal diameter of extrusion cylinder is adapted.
Preferably, the inside of the barrel of the extrusion cylinder forms mounting hole, and the heating mechanism is to be mounted on mounting hole
Interior steel pipe type heating tube.
Preferably, the rotary squeezing mould further includes that the annular being circumferentially molded on the outer wall of rotary squeezing mould is stepped down
Slot；The fixing seat includes engaging lug, fixed ring and stop collar, and the engaging lug has several and is circumferentially molded over fixed ring
One end outer wall on, each engaging lug is fixed on one end of the separate extrusion head of extrusion cylinder by way of screw locking；Institute
The other end for stating stop collar and fixed ring connects, and the internal diameter of the fixed ring and the outer diameter of rotary squeezing mould are adapted, the limit
The internal diameter of position ring is less than the internal diameter of fixed ring, and the inner end of the stop collar is located in annular recessing groove, the rotary squeezing mould
One end far from extrusion head is connect with rotary drive mechanism.
Preferably, first annular groove is circumferentially formed in the inner wall of fixed ring, is equipped in the first annular groove
First sealing ring；The material of first sealing ring is high temperature resistant asbestos fibre or high-temperature resistant rubber circle.
Preferably, the outer diameter of the rotary squeezing mould be greater than extrusion cylinder internal diameter, the rotary squeezing mould and extrusion cylinder
Contact face be equipped with second annular groove, in second annular groove be equipped with the second sealing ring.
Preferably, the rotary drive mechanism includes mounting rack, rotary drive motor, driving gear and transmission gear, institute
It states installation to be erected in machine table, the rotary drive motor is located on mounting rack, and the driving gear is mounted on rotation driving
On the driving end of motor, the transmission gear is mounted on mounting rack by rotation axis, in the separate extrusion cylinder of rotary squeezing mould
One end form rotation gear, the transmission gear is engaged with driving gear and rotation gear respectively.
Work is prepared using the rotation wing aluminum pipe of the preparation facilities of rotation wing aluminum pipe described in claim 1-7 any one
Skill, it is characterised in that:
Step A: aluminum material to be processed is put into external Medium Frequency Induction Heating Furnace and is preheated；
Step B: connecting the power supply of heating mechanism, is heated extrusion cylinder by heating mechanism；
Step C: the aluminum material by preheating is packed into extrusion cylinder by external feed device, heating mechanism persistently adds
Heat keeps temperature in extrusion cylinder constant；
Step D: connecting the power supply of rotary drive motor, and rotary drive mechanism drives the rotation of rotary squeezing mould, rotary squeezing
Mould is rotated with constant speed；
Step E: external compression mechanism urges extrusion head and squeezing needle at the uniform velocity advance, and extrusion head pushes aluminum material in extrusion cylinder
The rotary squeezing mould cooperation of interior advance, squeezing needle and uniform rotation squeezes out rotation wing aluminum pipe.
Preferably, in the step A, the heating temperature of external Medium Frequency Induction Heating Furnace is 380-450 degrees Celsius；Institute
It states in step B or step C, the heating temperature of heating mechanism is 350-430 degrees Celsius；In the step D, rotary drive motor
The rotation of rotary squeezing mould is driven, the speed of rotary squeezing mould rotation is 25-200r/s.
Preferably, in the step E, extrusion head fltting speed is 0.1-0.3m/s；The outer wall of squeezing needle and rotation are squeezed
The longitudinal section area ratio of area and aluminum material between the inner wall of pressing mold is 1:9-50, and the extruded velocity of rotation wing aluminum pipe is 1-
5m/s；The caliber for revolving wing aluminum pipe is 6-20mm, and the pipe thickness of rotation wing aluminum pipe is 0.6-2mm；The close aluminium of helical fin
One end of pipe with a thickness of 0.1-0.3mm, the distance between end and the central axes of aluminum pipe of helical fin are 15-50mm, spiral shell
The corner cut for revolving fin and aluminum pipe outer wall is 30-60 °.
The present invention using the above structure, the overall structure that the aluminum pipe and helical form fin of this structure are integrally formed, aluminium
It is connected between pipe and fin by molecule, solves the problems, such as that traditional finned heat exchanger pipeline is bad with fin contacts, raising is changed
Thermal effect.The complicated processing process for eliminating traditional finned heat exchanger fin machining, fin assembling, reduces cost, improves efficiency.
Traditional finned heat exchanger fin is mutually perpendicular to pipeline, and cooling Working fluid flow direction is often parallel with fin, fin and cooling sky
Gas heat transfer effect is poor, and revolving between the fin and pipeline of wing aluminum pipe is in certain oblique angle, can effectively increase cooling working medium and fin
Between frictional resistance, increase cooling working medium turbulent flow, improve heat exchange efficiency.
Detailed description of the invention
The present invention will be further described for attached drawing, but the content in attached drawing does not constitute any limitation of the invention.
Fig. 1 is the structural schematic diagram that the preparation facilities of wing aluminum pipe is revolved in the present invention；
Fig. 2 is the partial enlargement diagram in Fig. 1 at A；
Fig. 3 is the schematic cross-sectional view of fixing seat and rotary squeezing mould in the present invention；
Fig. 4 is the schematic cross-sectional view of rotary squeezing mould radially in the present invention.
Wherein: machine table 1, extrusion cylinder 2, heating mechanism 3, extrusion head 4, squeezing needle 5, rotary squeezing mould 6, die hole 6a, wing
Sheetmolding hole 6b, annular recessing groove 6c, rotation gear 6d, rotary drive mechanism 7, mounting rack 7a, rotary drive motor 7b, active
Gear 7c, transmission gear 7d, fixing seat 8, engaging lug 8a, fixed ring 8b, stop collar 8c, the second sealing ring 9, dummy block 10,
One sealing ring 11.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
Referring to FIG. 1 to 4, the preparation facilities of a kind of rotation wing aluminum pipe of the present embodiment, including machine table 1, it is described
Extrusion cylinder 2 is equipped in machine table 1 in the horizontal direction, heating mechanism 3 is equipped on extrusion cylinder 2, the heating mechanism 3 is to extrusion cylinder
2 are heated.
One end of the extrusion cylinder 2 is connect with the extrusion head 4 of external compression mechanism, and one end of the extrusion head 4, which is located at, to be squeezed
In pressure cylinder 2；The one end of the extrusion head 4 being located in extrusion cylinder 2 is equipped with squeezing needle 5 in the horizontal direction.
The other end of the extrusion cylinder 2 is equipped with rotary squeezing mould 6, the middle part of the rotary squeezing mould 6 by fixing seat 8
Die hole 6a is formed, the die hole 6a, which is circumferentially connected, is connected with several fin molding hole 6b.
The outer diameter of the squeezing needle 5 is less than the internal diameter of die hole 6a, in the central axes of the squeezing needle 5, rotary squeezing mould 6
The central axes of axis and extrusion cylinder 2 are respectively positioned on same straight line.
The rotary squeezing mould 6 is connect with rotary drive mechanism 7, the rotary drive mechanism 7 drive rotary squeezing mould 6 with
The central axes of rotary squeezing mould 6 are that shaft is rotated.
Using this structure, heating mechanism 3 and external power supply are electrically connected, and are heated to extrusion cylinder 2, are made extrusion cylinder 2
It is interior to keep certain temperature, prevent aluminum material cooled and solidified to be extruded.Extrusion head 4, squeezing needle 5 and the cooperation pair of rotary squeezing mould 6
Aluminum material is pushed and is squeezed, and aluminum material is pushed to move right into rotary squeezing mould 6, squeezing needle 5 and die hole 6a cooperation
The hollow aluminum pipe among rotation wing aluminum pipe is formed, the fin molding hole 6b of circumferential branch cooperatively forms several fins, rotates simultaneously
Driving mechanism 7 drives rotary squeezing mould 6 to rotate, and the fin of extrusion forming is made to be wound around aluminum pipe periphery in the shape of a spiral.
In the present embodiment, the number of fin molding hole 6b preferably but is not limited to 4, and 4 fin molding hole 6b are circumferentially
It is evenly distributed on the periphery of die hole 6a.The hole inner wall of the fin molding hole 6b is planar structure or globoidal structure, each cambered surface knot
Structure is recessed using the central axes of fin molding hole 6b as shaft clockwise or counterclockwise.
Preferably, it is equipped with dummy block 10 in the periphery of one end of the close extrusion head 4 of squeezing needle 5, the dummy block 10
The internal diameter of outer diameter and extrusion cylinder 2 is adapted.
Using this structure, the material of dummy block 10 is high-temperature resistant rubber pad, when pushing aluminum material, in extrusion cylinder 2
Wall is scraped, and aluminum material is prevented to be sticked to the inner wall of extrusion cylinder 2.
Preferably, the inside of the barrel of the extrusion cylinder 2 forms mounting hole, and the heating mechanism 3 is to be mounted on installation
Steel pipe type heating tube in hole.
Using this structure, heating mechanism 3 is arranged in the inside of the barrel of extrusion cylinder 2, it is direct to the barrel of extrusion cylinder 2
Heating, heat transfer efficiency is fast, and thermal loss is less, while the temperature for being able to maintain extrusion cylinder 2 is constant, plays the role of energy-efficient.
Preferably, the rotary squeezing mould 6 further includes that the annular being circumferentially molded on the outer wall of rotary squeezing mould 6 is stepped down
Slot 6c.
The fixing seat 8 includes that engaging lug 8a, fixed ring 8b and stop collar 8c, the engaging lug 8a have several and along week
To on the outer wall of the one end for being molded over fixed ring 8b, each engaging lug 8a is fixed on extrusion cylinder 2 by way of screw locking
One end far from extrusion head 4.
The stop collar 8c is connect with the other end of fixed ring 8b, internal diameter and the rotary squeezing mould 6 of the fixed ring 8b
Outer diameter is adapted, and the internal diameter of the stop collar 8c is less than the internal diameter of fixed ring 8b, and the inner end of the stop collar 8c allows positioned at annular
In the slot 6c of position, one end of the separate extrusion head 4 of the rotary squeezing mould 6 is connect with rotary drive mechanism 7.
Using this structure, rotary squeezing mould 6 is fixed on to one end of extrusion cylinder 2, fixed ring 8b, limit by fixing seat 8
Position-limiting action is played in position ring 8c and annular recessing groove 6c cooperation, and rotary squeezing mould 6 is enable to turn in fixing seat 8 along central axes
It is dynamic.While not influencing the rotation of rotary squeezing mould 6, so that rotary squeezing mould 6 is close to extrusion cylinder 2, pass through the precision of metal die
Cooperation, plays preliminary sealing function, prevents rotary squeezing mould 6 from falling off.Added with profit between fixed ring 8a and rotary squeezing mould 6
Lubrication prescription reduces mechanical wear.
Preferably, first annular groove is circumferentially formed in the inner wall of fixed ring 8b, is set in the first annular groove
There is the first sealing ring 11；The material of first sealing ring 11 is high temperature resistant asbestos fibre or high-temperature resistant rubber circle.
Using this structure, sealing effect is played in first annular groove and the cooperation of the first sealing ring 11, prevents aluminum material from existing
It is leaked in extrusion process.First sealing ring 11 can be played good using high temperature resistant asbestos fibre or high-temperature resistant rubber circle
High temperature resistant and sealing effect.
Preferably, the outer diameter of the rotary squeezing mould 6 be greater than extrusion cylinder 2 internal diameter, the rotary squeezing mould 6 with extruding
The contact face of cylinder 2 is equipped with second annular groove, and the second sealing ring 9 is equipped in second annular groove.
Using this structure, further sealing function is played in second annular groove and the cooperation of the second sealing ring 9, prevents aluminium
Material leaks in extrusion process.It is added with lubricant between extrusion cylinder 2 and rotary squeezing mould 6, reduces mechanical wear.
The material of second sealing ring 9 can use high temperature resistant asbestos fibre or high-temperature resistant rubber circle.
Preferably, the rotary drive mechanism 7 includes mounting rack 7a, rotary drive motor 7b, driving gear 7c and speed change
Gear 7d, the mounting rack 7a are located in machine table 1, and the rotary drive motor 7b is located on mounting rack 7a, the driving tooth
Wheel 7c is mounted on the driving end of rotary drive motor 7b, and the transmission gear 7d is mounted on mounting rack 7a by rotation axis,
One end of the separate extrusion cylinder 2 of rotary squeezing mould 6 form rotation gear 6d, the transmission gear 7d respectively with driving gear
7c and rotation gear 6d engagement.
Using this structure, the gear of the small radii of the transmission gear 7d is meshed with rotation gear 6d, gear teeth
The gear for taking turns the relatively large radius of 7d is meshed with driving gear 7c, and transmission gear 7d plays decelerating effect, the tooth of transmission gear 7d
Number according to the revolving speed of practical rotary drive motor 7b than suitably being selected.Preferably, in order to facilitate the installation of, transmission gear 7d
Outer diameter is less than the internal diameter of stop collar 8c.
Cooperated by rotary drive motor 7b, driving gear 7c and transmission gear 7d, driving rotary squeezing mould 6 rotates, and makes
6 velocity of rotation of rotary squeezing mould is stablized, and so that the angle between fin and aluminum pipe is maintained at certain range, improves the qualification of product
Rate.
Work is prepared using the rotation wing aluminum pipe of the preparation facilities of rotation wing aluminum pipe described in claim 1-7 any one
Skill, it is characterised in that:
Step A: aluminum material to be processed is put into external Medium Frequency Induction Heating Furnace and is preheated；
Step B: the power supply of heating mechanism 3 is connected, is heated extrusion cylinder 2 by heating mechanism 3；
Step C: the aluminum material by preheating is packed into extrusion cylinder 2 by external feed device, heating mechanism 3 persistently adds
Heat keeps temperature in extrusion cylinder 2 constant；
Step D: connecting the power supply of rotary drive motor, and rotary drive mechanism 7 drives rotary squeezing mould 6 to rotate, and rotation is squeezed
Pressing mold 6 is rotated with constant speed；
Step E: external compression mechanism urges extrusion head 4 and squeezing needle 5 at the uniform velocity advance, and extrusion head 4 pushes aluminum material squeezing
Advance in pressure cylinder 2, the cooperation of rotary squeezing mould 6 of squeezing needle 5 and uniform rotation squeezes out rotation wing aluminum pipe.
Using this structure, step A and step B can also be carried out, without sequencing to shorten preparation simultaneously
Time.It is added in extrusion cylinder 2 after aluminum material is preheated, extrusion head 4 turns right aluminum material promotion, the rotary squeezing mould of rotation
6 and the cooperation of squeezing needle 5 by aluminum material extrusion forming.
Cooperated using squeezing needle 5 and rotary squeezing mould 6, while rotation, carries out the extrusion work of aluminum material, do not need
Mechanical twisting deformation is carried out, the rotation wing tubing of preparation itself is made to have helical form fin structure, is one between fin and pipeline
Body formed, associativity is high between molecule, avoids contact with the problems such as bad, improves thermal conductivity.
The material of preparation rotation wing tubing is preferably aluminum material, can also be using other aluminum alloy materials, such as the trade mark
1060,1070,3003,6063 etc., the fusing point of aluminum material or aluminum alloy materials is lower, and the heating temperature of equipment is lower, energy consumption compared with
Low, lower temperature is also easy to control.
Preferably, in the step A, the heating temperature of external Medium Frequency Induction Heating Furnace is 380-450 degrees Celsius.
In the step B or step C, the heating temperature of heating mechanism 3 is 350-430 degrees Celsius.
In the step D, rotary drive motor drives rotary squeezing mould 6 to rotate, and the speed that rotary squeezing mould 6 rotates is
25-200r/s。
Using this structure, aluminum material is heated by external Medium Frequency Induction Heating Furnace, reaches aluminium after pre-heat effect
Material be it is soft solid-state like, the aluminum material after heating facilitates carry out moulding, guarantees the Forming Quality and efficiency of aluminum pipe.
Heating mechanism 3 plays heating effect, makes extrusion cylinder 2 before being put into material or when squeezing, and keeps in extrusion cylinder 2
It within the temperature range of 350-430 degrees Celsius, prevents temperature too low and aluminum material is caused to solidify, block extrusion cylinder 2 or obstruction rotation
Turn the die hole 6a or fin molding hole 6b of extrusion die 6.It is mechanical precisely cooperation, extrusion cylinder between rotary squeezing mould 6 and extrusion cylinder 2
In 2 heat transfer to rotary squeezing mould 6, rotary squeezing mould 6 is made also to keep certain temperature, prevents die hole 6a or fin from forming
Hole 6b blocking, aluminum material contact after squeezing out from rotary squeezing mould 6 with air, cooling down, are fixed to rotation wing fin aluminum pipe.
Rotary drive motor 7b carries out the adjustment of revolving speed by transmission gear 7d, keeps the velocity of rotation of rotary squeezing mould 6 steady
It is scheduled on 25-200r/s, cooperates the extrusion speed of aluminum pipe, is molded over fin in the shape of a spiral on the outer wall of aluminum pipe.
Preferably, in the step E, 4 fltting speed of extrusion head is 0.1-0.3m/s.
The longitudinal section area ratio of area and aluminum material between the outer wall of squeezing needle 5 and the inner wall of rotary squeezing mould 6 is
1:9-50, the extruded velocity of rotation wing aluminum pipe are 1-5m/s.
The caliber for revolving wing aluminum pipe is 6-20mm, and the pipe thickness of rotation wing aluminum pipe is 0.6-2mm.
One end of the close aluminum pipe of helical fin with a thickness of 0.1-0.3mm, the end of helical fin and the axis of aluminum pipe
The distance between line is 15-50mm, and the corner cut of helical fin and aluminum pipe outer wall is 30-60 °.
Using this structure, extrusion head 4 is promoted with temperature Rate, is guaranteed that the extruded velocity of aluminum material is stablized, is passed through control
Longitudinal section area ratio, that is, extrusion coefficient of area and aluminum material between the outer wall of squeezing needle 5 and the inner wall of rotary squeezing mould 6,
To control the extruded velocity of aluminum pipe.The size of aluminum pipe, the size of pipe thickness and helical fin, fin thickness and spiral wing
The parameters such as the corner cut of piece and aluminum pipe outer wall make the structure better heat-radiation effect for revolving wing aluminum pipe, the heat-transfer surface of this rotation wing aluminum pipe
Product is 3.5-6 times of the heat exchange area of common heat exchanger tube.
When work, aluminum material to be processed is preheated by external Medium Frequency Induction Heating Furnace, is also turned on heater
The power supply of structure 3 heats extrusion cylinder 2, and preheated aluminum material is added in extrusion cylinder 2, connects the power supply of rotary drive motor 7b,
Rotary drive motor 7b drives rotary squeezing mould 6 to rotate, and external pressing mechanism pushes extrusion head 4, extrusion head 4 and dummy block 10
Cooperation pushes aluminum material to advance, and the cooperation of rotary squeezing mould 6 of squeezing needle 5 and rotation carries out extrusion forming, aluminum material to aluminum material
After rotary squeezing mould 6 is formed and cooled down, rotation wing fin aluminum pipe is obtained.
The technical principle of the invention is described above in combination with a specific embodiment.These descriptions are intended merely to explain of the invention
Principle, and shall not be construed in any way as a limitation of the scope of protection of the invention.Based on the explanation herein, the technology of this field
Personnel can associate with other specific embodiments of the invention without creative labor, these modes are fallen within
Within protection scope of the present invention.
Claims (10)
1. a kind of preparation facilities for revolving wing aluminum pipe, including machine table, which is characterized in that set in the horizontal direction in the machine table
There is extrusion cylinder, heating mechanism is equipped on extrusion cylinder, the heating mechanism heats extrusion cylinder；
One end of the extrusion cylinder is connect with the extrusion head of external compression mechanism, and one end of the extrusion head is located in extrusion cylinder；
The one end of the extrusion head being located in extrusion cylinder is equipped with squeezing needle in the horizontal direction；
The other end of the extrusion cylinder is equipped with rotary squeezing mould by fixing seat, forms mould in the middle part of the rotary squeezing mould
Hole, the die hole, which is circumferentially connected, is connected with several fin molding holes；
The outer diameter of the squeezing needle be less than die hole internal diameter, the central axes of the squeezing needle, the central axes of rotary squeezing mould and
The central axes of extrusion cylinder are respectively positioned on same straight line；
The rotary squeezing mould is connect with rotary drive mechanism, and the rotary drive mechanism driving rotary squeezing mould is with rotary squeezing
The central axes of mould are that shaft is rotated.
2. a kind of preparation facilities for revolving wing aluminum pipe according to claim 1, which is characterized in that in squeezing needle close to crowded
The periphery of one end of pressure head is equipped with dummy block, and the outer diameter of the dummy block and the internal diameter of extrusion cylinder are adapted.
3. a kind of preparation facilities for revolving wing aluminum pipe according to claim 1, which is characterized in that the barrel of the extrusion cylinder
Inside form mounting hole, the heating mechanism is the steel pipe type heating tube being mounted in mounting hole.
4. a kind of preparation facilities for revolving wing aluminum pipe according to claim 1, which is characterized in that the rotary squeezing mould is also
Annular recessing groove on outer wall including being circumferentially molded over rotary squeezing mould；
The fixing seat includes engaging lug, fixed ring and stop collar, and the engaging lug has several and is circumferentially molded over fixation
On the outer wall of one end of ring, each engaging lug is fixed on one end of the separate extrusion head of extrusion cylinder by way of screw locking；
The stop collar and the other end of fixed ring connect, and the internal diameter of the fixed ring and the outer diameter of rotary squeezing mould are adapted,
The internal diameter of the stop collar is less than the internal diameter of fixed ring, and the inner end of the stop collar is located in annular recessing groove, and the rotation is squeezed
One end of the separate extrusion head of pressing mold is connect with rotary drive mechanism.
5. a kind of preparation facilities for revolving wing aluminum pipe according to claim 4, which is characterized in that on the inner wall edge of fixed ring
First annular groove is circumferentially formed, is equipped with the first sealing ring in the first annular groove；The material of first sealing ring
For high temperature resistant asbestos fibre or high-temperature resistant rubber circle.
6. a kind of preparation facilities for revolving wing aluminum pipe according to claim 1, which is characterized in that the rotary squeezing mould
Outer diameter is greater than the internal diameter of extrusion cylinder, and the rotary squeezing mould is equipped with second annular groove with the contact face of extrusion cylinder, the
The second sealing ring is equipped in second ring groove.
7. a kind of preparation facilities for revolving wing aluminum pipe according to claim 1, which is characterized in that the rotary drive mechanism
Including mounting rack, rotary drive motor, driving gear and transmission gear, the installation is erected in machine table, and the rotation is driven
Dynamic motor is located on mounting rack, and the driving gear is mounted on the driving end of rotary drive motor, and the transmission gear passes through
Rotation axis is mounted on mounting rack, forms rotation gear, the gear teeth in one end of the separate extrusion cylinder of rotary squeezing mould
Wheel is engaged with driving gear and rotation gear respectively.
8. the rotation wing aluminum pipe preparation process of the preparation facilities using rotation wing aluminum pipe described in claim 1-7 any one,
It is characterized by:
Step A: aluminum material to be processed is put into external Medium Frequency Induction Heating Furnace and is preheated；
Step B: connecting the power supply of heating mechanism, is heated extrusion cylinder by heating mechanism；
Step C: the aluminum material by preheating is packed into extrusion cylinder by external feed device, heating mechanism continuous heating is protected
It is constant to hold temperature in extrusion cylinder；
Step D: connecting the power supply of rotary drive motor, and rotary drive mechanism drives the rotation of rotary squeezing mould, rotary squeezing mould with
Constant speed rotation；
Step E: external compression mechanism urges extrusion head and squeezing needle at the uniform velocity advance, before extrusion head promotion aluminum material is in extrusion cylinder
Into the rotary squeezing mould cooperation of squeezing needle and uniform rotation squeezes out rotation wing aluminum pipe.
9. a kind of rotation wing aluminum pipe preparation process according to claim 8, which is characterized in that external in the step A
The heating temperature of Medium Frequency Induction Heating Furnace is 380-450 degrees Celsius；
In the step B or step C, the heating temperature of heating mechanism is 350-430 degrees Celsius；
In the step D, rotary drive motor drives the rotation of rotary squeezing mould, and the speed of rotary squeezing mould rotation is 25-
200r/s。
10. a kind of rotation wing aluminum pipe preparation process according to claim 8, which is characterized in that in the step E, squeeze
Pressure head fltting speed is 0.1-0.3m/s；
The longitudinal section area ratio of area and aluminum material between the outer wall of squeezing needle and the inner wall of rotary squeezing mould is 1:9-50,
The extruded velocity for revolving wing aluminum pipe is 1-5m/s；
The caliber for revolving wing aluminum pipe is 6-20mm, and the pipe thickness of rotation wing aluminum pipe is 0.6-2mm；
One end of the close aluminum pipe of helical fin with a thickness of 0.1-0.3mm, the central axes of the end of helical fin and aluminum pipe it
Between distance be 15-50mm, the corner cut of helical fin and aluminum pipe outer wall is 30-60 °.
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| CN111421009A (en) * | 2020-02-27 | 2020-07-17 | 北京科技大学 | Screw pump rotor rotary die extrusion forming process and forming device |
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