CN106808173A - Heat exchanger machining method and heat exchanger - Google Patents
Heat exchanger machining method and heat exchanger Download PDFInfo
- Publication number
- CN106808173A CN106808173A CN201611097061.XA CN201611097061A CN106808173A CN 106808173 A CN106808173 A CN 106808173A CN 201611097061 A CN201611097061 A CN 201611097061A CN 106808173 A CN106808173 A CN 106808173A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- cutting
- units
- cutting wires
- mounting hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title abstract description 14
- 238000003754 machining Methods 0.000 title abstract 3
- 238000005520 cutting process Methods 0.000 claims abstract description 79
- 239000000463 material Substances 0.000 claims abstract description 37
- 238000003672 processing method Methods 0.000 claims abstract description 14
- 238000009434 installation Methods 0.000 claims description 21
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 235000013290 Sagittaria latifolia Nutrition 0.000 description 2
- 235000015246 common arrowhead Nutrition 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
- F28F1/325—Fins with openings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2215/00—Fins
- F28F2215/08—Fins with openings, e.g. louvers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides a heat exchanger machining method and a heat exchanger. The processing method of the heat exchanger comprises the following steps: processing mounting holes for mounting heat exchange tubes on the material sheets; cutting holes are processed at the intersection points of a plurality of transverse cutting lines and vertical cutting lines which are distributed on the material sheet, and a plurality of minimum cutting units corresponding to the fins are formed by the plurality of transverse cutting lines and the vertical cutting lines which are intersected; cutting along the transverse cutting line and cutting along the vertical cutting line at intervals to form a plurality of assembling units, wherein each assembling unit is provided with a plurality of minimum cutting units; stacking and assembling the plurality of assembling units and installing the heat exchange tubes; and cutting the plurality of assembled units after being overlapped and assembled along the vertical cutting line which is not cut so as to form a plurality of independent heat exchanger mounting units. The assembly unit is used as a unit to carry, install the heat exchange tube and the like, so that the production efficiency of the heat exchanger in the machining process is improved.
Description
Technical field
The present invention relates to technical field of heat exchangers, and in particular to a kind of heat exchanger processing method and heat exchanger.
Background technology
At present, the work such as the main processing including fin of the processing of heat exchanger and follow-up heat exchanger tube installation.
Specifically, as depicted in figs. 1 and 2, be first to process fin, by material piece 10 ' (typically using aluminum foil coil
Material) it is punched out, rushes shutter, flange shaping is carried out to punching, unnecessary leftover pieces are cut off, and by cutter to excision
The material piece 10 ' of leftover pieces carries out horizontal and vertical cutting, eventually forms the fin 20 ' of monolithic.Then, the list that will be got
The fin 20 ' of piece is transported to different station, carries out the operations such as follow-up heat exchanger tube installation.
But, during above-mentioned heat exchanger processing, it is necessary to the monolithic fin 20 ' to cutting to be carried to different station laggard
The follow-up working process of row, in high-volume plant produced, production efficiency is not high.
The content of the invention
It is a primary object of the present invention to provide a kind of heat exchanger processing method and heat exchanger, to solve to change in the prior art
Production efficiency problem not high in hot device process.
To achieve the above object, the invention provides a kind of heat exchanger processing method, comprise the following steps：On material piece
Process the mounting hole for installing heat exchanger tube；The some horizontal cutting wires being distributed on material piece and the crosspoint of vertical cutting wires
Place working cut hole, it is single that some horizontal cutting wires and vertical cutting wires for intersecting form multiple minimum cuttings corresponding with fin
Unit；Transversely cutting wires are cut and vertically cutting wires carry out cutting the multiple module units of formation with interval mode, each
Module units has multiple minimum cutting units；Multiple module units are overlapped and assemble and carry out heat exchanger tube installation；To folded
Plus the multiple module units after assembling are cut along not cropped vertical cutting wires, pacified with forming multiple individually heat exchangers
Dress unit.
Further, the distance between the edge in hole and the edge of mounting hole are cut in the range 1.6 mm-5 mm.
Further, multiple module units be overlapped assemble and carry out heat exchanger tube install include：Exchange heat pipe is worn
Cross installation hole operation；Tube expansion operation is carried out to the heat exchanger tube through mounting hole；Exchange heat pipe and fin are subjected to.
The present invention also provides a kind of heat exchanger using heat exchanger processing method as described above processing, including heat exchanger is installed
Unit, heat exchanger installation unit includes the fin of multiple superpositions.
Further, fin is provided with three rows for the mounting hole that heat exchanger tube is passed through, and on material piece be distributed it is some
The chamfering that the intersection working cut hole operation of horizontal cutting wires and vertical cutting wires is formed.
Further, every two rows mounting hole mutually staggers in three row's mounting holes.
Further, the chamfering of the wherein one end in the two ends of fin is that to be adapted with mounting hole be rounding.
Further, the distance between edge of Chamfer Edge and mounting hole is in the range 1.6 mm-5 mm.
Technical solution of the present invention, has the following advantages that：
1. in the heat exchanger processing method that the present invention is provided, multiple module units to be formed by the way that material piece is cut, it is each
Module units has multiple minimum cutting units, in the operations such as follow-up heat exchanger tube installation, by units of module units
Carried, the operation such as heat exchanger tube is installed, while by the working cut hole on the cutting wires of material piece, reduce it is minimum cut it is single
The quantity of unit's cutting wires upper bridge section when cropped, reduces the difficulty for cutting, and is easy to enter multiple module units of superposition assembling
The last cutting of row forms multiple individually heat exchanger installation units, and follow-up removing is carried out relative to the single minimum unit that cuts
The operations such as fortune, heat exchanger tube installation, whole process reduces carrying, the number of times of processing, during raising heat exchanger processing
Production efficiency.
Brief description of the drawings
In order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art, below will be to specific
The accompanying drawing to be used needed for implementation method or description of the prior art is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.In the accompanying drawings：
Fig. 1 is the structural representation of material piece in the prior art, and wherein arrow head part is the cutting direction of material piece；
Fig. 2 is the structural representation of the fin after material piece cutting in Fig. 1；
Fig. 3 is the structural representation of material piece in the embodiment of the present invention, and wherein arrow head part is the cutting direction of material piece；
Fig. 4 is the structural representation of module units of the material piece after trimming operation shown in Fig. 3；
Fig. 5 is the structural representation of the fin after further segmentation is cut of material piece shown in Fig. 3.
Wherein, the reference in above-mentioned accompanying drawing is：
10 '-material piece；20 '-fin；10- material pieces；11- cuts hole；20- fins；21- mounting holes；30- assemblings are single
Unit.
Specific embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
As shown in Figures 3 to 5, according to embodiments of the present invention in heat exchanger processing method comprise the following steps：
The mounting hole 21 for installing heat exchanger tube is processed on material piece 10, in this step, material piece 10 is fin 20
The raw material of processing, can be aluminium foil, can also be iron foil, Copper Foil etc., and mounting hole 21 is gone out by high velocity ram machine；
The some horizontal cutting wires being distributed on material piece 10 and the intersection working cut hole 11 of vertical cutting wires, phase
The some horizontal cutting wires and vertical cutting wires for intersecting form multiple minimum cutting units corresponding with fin 20, wherein, laterally
The position of cutting wires and vertical cutting wires by mounting hole 21 position restriction；
Transversely cutting wires are cut and vertically cutting wires carry out cutting the multiple module units of formation with interval mode
30, each module units 30 has multiple minimum cutting units；
Multiple module units 30 are overlapped and assemble and carry out heat exchanger tube installation；
Multiple module units 30 after superposition assembling are cut along not cropped vertical cutting wires, to form multiple
Single heat exchanger installation unit.
It should be noted that, horizontal cutting wires and vertical cutting wires do not constitute the restriction to scheme, and the present embodiment diagram is real
Apply long side of the horizontal cutting in mode first with minimum cutting unit to overlap, vertical cutting wires cut the short side weight of unit with minimum
Close.Can also be that the short side that laterally cutting first cuts unit with minimum overlaps, vertical cutting wires cut the side long of unit with minimum
Overlap,
Using the heat exchanger processing method in the present embodiment, cut to form multiple module units 30 by by material piece 10,
Each module units 30 has multiple minimum cutting units, in the operations such as follow-up heat exchanger tube installation, by with module units
The operation such as 30 are carried for unit, heat exchanger tube is installed, while by the working cut hole 11 on the cutting wires of material piece 10, subtracting
Few minimum quantity for cutting unit cutting wires upper bridge section when cropped, reduces the difficulty for cutting, and is easy to many of superposition assembling
Individual module units 30 carries out the multiple individually heat exchanger installation units of last cutting formation, relative to single minimum cutting list
Unit carries out the operations such as follow-up carrying, heat exchanger tube installation, and whole process reduces carrying, the number of times of processing, improves heat exchange
Production efficiency in device process.
Preferably, the minimum quantity for cutting unit is identical in each module units 30 in the present embodiment, be easy to mould,
The unification of installation procedure etc., further can be with improve production efficiency.
Specifically, the minimum quantity for cutting unit is two panels in each module units 30 in the present embodiment, it is of course also possible to
It is three, four etc., can realizes reducing the number of times carried and process, improves the advantage of heat exchanger production efficiency, above-mentioned skill
Art scheme also should be within the scope of the present invention.
Preferably, when carrying out working cut hole 11 on the cutting wires on material piece 10, cut the edge in hole 11 and install
The distance between the edge in hole 21 in the range 1.6 mm-5 mm, be able to the greatest extent can so may be used while the intensity of fin 20 is ensured
Can few use material, the use of material can be saved, especially factory mass produce in, can save substantial amounts of material into
This.
Specifically, it is overlapped for the multiple module units 30 mentioned in above-described embodiment and assembles and carry out heat exchanger tube peace
Dress step, specifically includes following steps：Exchange heat pipe operated through mounting hole 21；To entering through the heat exchanger tube of mounting hole 21
Row tube expansion is operated；Exchange heat pipe and fin 20 are subjected to.
The present invention also provides a kind of heat exchanger using heat exchanger processing method as described above processing, and heat exchanger includes heat exchange
Device installation unit, heat exchanger installation unit includes the fin 20 of multiple superpositions.So as to the processing of the heat exchanger has production efficiency
Advantage high.
As shown in figure 5, specifically, fin 20 is provided with three rows for the mounting hole 21 that heat exchanger tube is passed through, and in material piece
The chamfering that the operation of intersection working cut hole 11 of some horizontal cutting wires and vertical cutting wires that are distributed on 10 is formed.So as to
Fin 20 in the embodiment of the present invention avoids pointed part, and fin 20 is not allowed to be also easy to produce reviewing in the process of fetching, and is conducive to wing
The raising of the mass of piece 20, simultaneously because fin 20 reduces the use of material, reduces the material cost of the processing and manufacturing of fin 20.
Specifically, every two rows mounting hole 21 mutually staggers in three row's mounting holes 21, is changed after being easily installed heat exchanger tube
Heat, corresponding, the situation with mounting hole 21 is adapted, at the two ends of fin 20, wherein one end and the phase of mounting hole 21 of fin 20
Rounding is adapted for, the other end is the chamfer being adapted with mounting hole 21.
Preferably, the distance between edge of Chamfer Edge and mounting hole 21 is in the range 1.6 mm-5 mm in the present embodiment.This
Sample can less use material as far as possible while the intensity of fin 20 is ensured, can save the use of material, especially exist
In factory's large-scale production, substantial amounts of Material Cost can be saved.
Obviously, above-described embodiment is only intended to clearly illustrate example, and not to the restriction of implementation method.It is right
For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or
Change.There is no need and unable to be exhaustive to all of implementation method.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (8)
1. a kind of heat exchanger processing method, it is characterised in that comprise the following steps：
The mounting hole (21) for installing heat exchanger tube is processed on material piece (10)；
The some horizontal cutting wires being distributed on material piece (10) and the intersection working cut hole (11) of vertical cutting wires, phase
The described some horizontal cutting wires and vertical cutting wires for intersecting form multiple minimum cutting units corresponding with fin (20)；
Cut along the horizontal cutting wires and vertically cutting wires are carried out cutting the multiple module units of formation with interval mode
(30), each module units (30) is with multiple minimum cutting units；
The multiple module units (30) is overlapped and assembles and carry out heat exchanger tube installation；
Multiple module units (30) after superposition assembling are cut along not cropped described vertical cutting wires, it is many to be formed
Individual single heat exchanger installation unit.
2. heat exchanger processing method as claimed in claim 1, it is characterised in that the edge and the peace of the cutting hole (11)
Fill the distance between the edge of hole (21) in the range 1.6 mm-5 mm.
3. heat exchanger processing method as claimed in claim 1 or 2, it is characterised in that the multiple module units (30) is carried out
Superposition is assembled and carries out heat exchanger tube installation to be included：
The heat exchanger tube is carried out to be operated through the mounting hole (21)；
To carrying out tube expansion operation through the heat exchanger tube of the mounting hole (21)；
The heat exchanger tube and the fin (20) are subjected to.
4. a kind of heat exchanger using the heat exchanger processing method processing as any one of claims 1 to 3, including heat exchanger
Installation unit, the heat exchanger installation unit includes the fin (20) of multiple superpositions.
5. heat exchanger according to claim 4, it is characterised in that the fin (20) is provided with three rows and is passed through for heat exchanger tube
Mounting hole (21), and on the material piece (10) be distributed some horizontal cutting wires and vertical cutting wires intersection
The chamfering that working cut hole (11) operation is formed.
6. heat exchanger according to claim 5, it is characterised in that installed described in every two row in mounting hole (21) described in three rows
Mutually stagger in hole (21).
7. heat exchanger according to claim 5, it is characterised in that the institute of the wherein one end in the two ends of the fin (20)
It is that to be adapted with the mounting hole (21) be rounding to state chamfering.
8. heat exchanger according to claim 5, it is characterised in that the edge of the Chamfer Edge and the mounting hole (21)
The distance between in the range 1.6 mm-5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611097061.XA CN106808173B (en) | 2016-12-02 | 2016-12-02 | Heat exchanger machining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611097061.XA CN106808173B (en) | 2016-12-02 | 2016-12-02 | Heat exchanger machining method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106808173A true CN106808173A (en) | 2017-06-09 |
| CN106808173B CN106808173B (en) | 2019-10-01 |
Family
ID=59106980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611097061.XA Active CN106808173B (en) | 2016-12-02 | 2016-12-02 | Heat exchanger machining method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106808173B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6261744A (en) * | 1985-09-13 | 1987-03-18 | Hitachi Ltd | Device for manufacturing heat exchanger |
| US4698904A (en) * | 1985-09-13 | 1987-10-13 | Hitachi, Ltd. | Apparatus for assembling fins and tubes for heat exchangers |
| CN1147080A (en) * | 1994-09-29 | 1997-04-09 | 株式会社杰克赛尔 | Method of producing heat exchangers and heat exchanger produced by the method |
| CN201382535Y (en) * | 2009-03-11 | 2010-01-13 | 常州常恒樱花制冷配件有限公司 | Special-shaped fin of heat exchanger |
| CN102689166A (en) * | 2012-05-30 | 2012-09-26 | 中冶南方(武汉)威仕工业炉有限公司 | Method for manufacturing saw-toothed tube plates used for finned tube heat exchanger |
| CN102717245A (en) * | 2012-06-25 | 2012-10-10 | 常州市常蒸蒸发器有限公司 | Manufacturing technology of fin-type evaporator |
| CN103537529A (en) * | 2012-07-12 | 2014-01-29 | 珠海格力电器股份有限公司 | Punching method of air-cooled heat exchanger and air-cooled heat exchanger |
| CN105710622A (en) * | 2015-09-18 | 2016-06-29 | 安庆市盛唐制冷设备有限责任公司 | Fixed tube-sheet heat exchanger |
| CN206387302U (en) * | 2016-12-02 | 2017-08-08 | 珠海格力电器股份有限公司 | Heat exchanger |
-
2016
- 2016-12-02 CN CN201611097061.XA patent/CN106808173B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6261744A (en) * | 1985-09-13 | 1987-03-18 | Hitachi Ltd | Device for manufacturing heat exchanger |
| US4698904A (en) * | 1985-09-13 | 1987-10-13 | Hitachi, Ltd. | Apparatus for assembling fins and tubes for heat exchangers |
| CN1147080A (en) * | 1994-09-29 | 1997-04-09 | 株式会社杰克赛尔 | Method of producing heat exchangers and heat exchanger produced by the method |
| CN201382535Y (en) * | 2009-03-11 | 2010-01-13 | 常州常恒樱花制冷配件有限公司 | Special-shaped fin of heat exchanger |
| CN102689166A (en) * | 2012-05-30 | 2012-09-26 | 中冶南方(武汉)威仕工业炉有限公司 | Method for manufacturing saw-toothed tube plates used for finned tube heat exchanger |
| CN102717245A (en) * | 2012-06-25 | 2012-10-10 | 常州市常蒸蒸发器有限公司 | Manufacturing technology of fin-type evaporator |
| CN103537529A (en) * | 2012-07-12 | 2014-01-29 | 珠海格力电器股份有限公司 | Punching method of air-cooled heat exchanger and air-cooled heat exchanger |
| CN105710622A (en) * | 2015-09-18 | 2016-06-29 | 安庆市盛唐制冷设备有限责任公司 | Fixed tube-sheet heat exchanger |
| CN206387302U (en) * | 2016-12-02 | 2017-08-08 | 珠海格力电器股份有限公司 | Heat exchanger |
Non-Patent Citations (2)
| Title |
|---|
| 弗拉基也夫斯基: "《机械制造中的自动线》", 31 October 1965, 中国工业出版社 * |
| 翟洪绪: "《实用铆工读本》", 30 September 2002 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106808173B (en) | 2019-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102862034B (en) | Continuous production method for corrugated web H-beam | |
| CN203875612U (en) | Automatic production system for container bottom cross beam | |
| CN104296566A (en) | Plate-fin heat exchanger | |
| CN203791443U (en) | Uncoiling and blanking die and uncoiling and blanking production line using same | |
| CN206387302U (en) | Heat exchanger | |
| CN202516914U (en) | Punching device for manufacturing shielding copper sheet of semiconductor plastic-packaging high-frequency pre-heater | |
| CN106808173A (en) | Heat exchanger machining method and heat exchanger | |
| CN105365263A (en) | Control system for corrugated carton forming device | |
| CN204195243U (en) | A kind of full automatic tapping beveler | |
| CN105499690A (en) | Cutting machine for steel pipes | |
| CN203109344U (en) | Cutting device of modularized radiator | |
| CN107262620A (en) | A kind of self-feeding punching machine | |
| CN206967052U (en) | Bolt fastening smoke evacuation valve chest automatic assembly line and smoke evacuation valve chest | |
| CN206747966U (en) | Leaf spring cuts punching integrated machine | |
| CN102847778B (en) | Mounting structure of longitudinal cutter in sub longitudinal cutting die for fins of air conditioners | |
| CN105344816A (en) | Air conditioner fin mold | |
| CN104972057A (en) | Chain sheet punching method | |
| CN203805078U (en) | Longitudinal cutting tool of air conditioning fins | |
| CN204309073U (en) | One-shot forming high-efficient trapezoidal cutter | |
| CN205870366U (en) | Positioner of tunnel segment mould plug | |
| CN208543105U (en) | Rectangle hollow steel pipe is cut by laser tooling | |
| CN104400112A (en) | Quick changing device for partition board used for achieving dual stations of transverse cutting unit | |
| CN102126117A (en) | Novel cooling-fin fixing device for heat exchanger forming machine | |
| CN206861926U (en) | Heat exchanger | |
| CN106955932A (en) | A kind of full automatic aluminium section bar deep processing equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |