CN105364169A - Semi-cellular steel strip shaping and cutting-off machine ensuring uniform forced convection flow field - Google Patents
Semi-cellular steel strip shaping and cutting-off machine ensuring uniform forced convection flow field Download PDFInfo
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- CN105364169A CN105364169A CN201510894862.8A CN201510894862A CN105364169A CN 105364169 A CN105364169 A CN 105364169A CN 201510894862 A CN201510894862 A CN 201510894862A CN 105364169 A CN105364169 A CN 105364169A
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- pressing plate
- shaping
- cutting
- top board
- guide finger
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D31/00—Shearing machines or shearing devices covered by none or more than one of the groups B23D15/00 - B23D29/00; Combinations of shearing machines
- B23D31/04—Shearing machines or shearing devices covered by none or more than one of the groups B23D15/00 - B23D29/00; Combinations of shearing machines for trimming stock combined with devices for shredding scrap
-
- 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
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D33/00—Accessories for shearing machines or shearing devices
- B23D33/08—Press-pads; Counter-bases; Hold-down devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Punching Or Piercing (AREA)
- Shearing Machines (AREA)
Abstract
The invention discloses a semi-cellular steel strip shaping and cutting-off machine ensuring a uniform forced convection flow field. The shaping and cutting-off machine comprises a top plate and a bottom plate, which are arranged horizontally, wherein the top plate and the bottom plate are fixedly connected through a plurality of guide posts; the guide posts are perpendicular to the top plate and the bottom plate; a pressing plate parallel to the top plate and the bottom plate is arranged between the top plate and the bottom plate; guide sleeves fixedly connected with the pressing plate are arranged on the pressing plate; the guide sleeves are in slide fit with the guide posts via guide holes; a lower rack is arranged on the bottom plate; an upper rack is arranged on the pressing plate; when the pressing plate moves to a bottommost position, the upper rack and the lower rack are in toothed engagement with each other; and the shaping and cutting-off machine is provided with a pressing plate driving mechanism. Through adoption of the technical scheme, teeth of a steel strip are shaped precisely, and the shaping precision of the equipment is high; shaping operation and cutting-off operation are combined and finished on one piece of equipment; through adjustment, shaping and cutting-off can be performed separately as well as simultaneously; and the shaping and cutting-off machine is simple in structure and convenient to use and adjust.
Description
The application is the divisional application of following original bill application:
Application number: 201410383695.6
The applying date: on August 6th, 2014
Application title: guarantee half of forced convection even flow field cellular steel band shaping, cutting machine
Technical field
The invention belongs to the technical field of Mechanical Product's Machining technique, relate to Mechanical Product's Machining equipment, more particularly, the present invention relates to and a kind ofly guarantee half of forced convection even flow field cellular steel band shaping, cutting machine.
Background technology
In recent years, along with domestic and international for the construction demand of high-speed wind tunnel, have that windage is little, even flow field, and the ventilation window be made up of metallic honeycomb application is more and more.This cellular vent window is called as honeycomb window.
As shown in Fig. 8, Fig. 9 and Figure 10, honeycomb window is made up of housing 14 and cellular board 15.
As required, these windows are made up of the hexagon cellular shape grid that size is different, and grid material is that about about 0.1mm is thick, the soft magnetism steel band that about 13mm is wide or special stainless steel band.The precision of size of mesh opening directly affects the product quality of cellular board.Shearing in frock, shaping, the welding degree of accuracy, the burr occurred in cutting action, gap, spatter etc. all will determine the performance of product.Because the required precision of cellular board product is high, therefore special high-accuracy equipment must be used.
The process sequence that cellular board is produced is:
Soft magnetism steel band is cut into the narrow steel strip of normal width;
Narrow steel strip is rolled into half cellular tooth bar;
By tooth bar shaping and measured length cut off;
Half cellular rack welding is become cellular board;
Cellular board is cut to size;
Cellular board is loaded frame and welds with it.
The series of producing plants of cellular board is mainly divided into: the equipment such as steel band is sheared, shaping, the half honeycomb tooth bar shaping cut-out of half honeycomb gear hobbing, cellular board welding, cellular board cutting and observation window welding fabrication.
Due to the particularity of cellular board production technology, home and abroad is all without the introduction of this type of production equipment.
The half cellular steel band rolled out with half cellular steel band gear-hobbing machine is as shown in Fig. 1 (before shaping).Owing to being that gear hobbing is shaping, accurately all there is error at outer interior angle and exterior angle except size dimension to cause half hexagon.Meanwhile, the technique that gear hobbing is shaping also determines the angular vertex place of half hexangle type with very little circular arc.Below fine error in shape will directly affect its properties of product after cellular board is shaping.
In addition, need as requested steel band to be cut into measured length before half cellular steel band is welded into cellular board.
Comprehensive above requirement, needs to carry out shaping and cut-out with special installation double cellular steel band.This special shaping, cut-out equipment also do not have matured product commercially to occur at present, do not have corresponding technical scheme open yet.
Summary of the invention
The invention provides and a kind ofly guarantee half of forced convection even flow field cellular steel band shaping, cutting machine, its objective is quality and the production efficiency of the product improving cellular board.
To achieve these goals, the technical scheme that the present invention takes is:
Of the present inventionly guarantee half of forced convection even flow field cellular steel band shaping, cutting machine, comprise horizontally disposed top board and base plate, described top board is fixedly connected with by many leads with base plate, and described lead is vertical with base plate with top board;
Between described top board and base plate, the pressing plate parallel with base plate with top board is set;
Described pressing plate is arranged the fairlead be fixedly connected with it; Described fairlead is formed by pilot hole and described lead and is slidably matched;
Described base plate arranges lower tooth bar; Described pressing plate arranges upper rack; In described presser motion under the state of lowest position, described upper rack engages with lower tooth bar profile of tooth;
Described shaping, cutting machine are provided with pressing plate driving mechanism.
Described pressing plate driving mechanism is: be fixedly installed cylinder at the upper surface of top board, and the piston rod of described cylinder is passed down through top board, and the end of this piston rod is fixedly connected with pressing plate by cylinder connector.
The end of described pressing plate arranges cutting knife, and the end of described cutting knife and lower tooth bar forms the edge of a knife.
Described upper rack is arranged the guide finger be fixedly connected with it; Described pressing plate is provided with guide finger lining; The epimere of described guide finger and the endoporus of guide finger lining are formed and are slidably matched; The upper end of described guide finger is provided with dome, and convex diameter of a circle is greater than the endoporus aperture of guide finger lining; Between described pressing plate and upper rack, pocketed springs on described guide finger, described spring is Compress Spring; Under the action of the spring, described upper rack and pressing plate are at a distance of a segment distance, and the cutting edge of described cutting knife is higher than the lower bead of upper rack.
The present invention adopts technique scheme, utilizes the tooth bar theory of engagement, and participate in the process of engagement at semi-hexagon shape steel band, accurate shaping steel band profile of tooth, equipment plastic precision is high; According to the reason that the shaping of semi-hexagon shape steel band is consistent with the locate mode of steel strip cutting, re-shaping exercise and cut-out working group are combined on an equipment and complete; Through adjustment, shaping can be made and cut off to carry out respectively, also can make shaping and cut off to carry out simultaneously; Structure is simple, Use Adjustment is convenient.
Accompanying drawing explanation
In content shown in accompanying drawing and figure, mark is as follows:
Fig. 1 is the structural representation before half cellular steel band shaping of the present invention;
Fig. 2 is the structural representation after half cellular steel band shaping of the present invention;
Fig. 3 is shaping of the present invention, cutting machine structural representation;
Fig. 4 is the structural representation of the amplification at A place in Fig. 3;
Fig. 5 is the structural representation of the amplification at B place in Fig. 3;
Fig. 6 is the right view of structure shown in Fig. 3;
Fig. 7 is the structural representation that in Fig. 3, guide finger and bush structure place amplify.
Fig. 8 is the front view of honeycomb window;
Fig. 9 is the top view of structure shown in Fig. 8;
Figure 10 is the view of honeycomb partial enlargement.
Be labeled as in figure:
1, cylinder, 2, top board, 3, pressing plate, 4, base plate, 5, cutting knife, 6, upper rack, 7, lower tooth bar, 8, lead, 9, fairlead, 10, cylinder connector, 11, spring, 12, guide finger, 13, guide finger lining, 14, housing, 15, cellular board.
Detailed description of the invention
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is described in further detail, have more complete, accurate and deep understanding to help those skilled in the art to inventive concept of the present invention, technical scheme.
In order to improve the technical performance of product, needing the half cellular steel band to rolling out with half cellular steel band gear-hobbing machine to carry out accurate shaping, reaching requirement as Suo Shi Fig. 2 (after shaping).
Tooth Shape Design is just hexagonal half: three tooth length of sides are L, and addendum angle is 60 °.Consider the thickness δ of extrded material, the tooth paddy length of side is: L+2 δ × tan30 °.
By analyzing prior art, the equipment to carrying out shaping and cut-out of the present invention, should have following characteristics and requirement:
1, while the hexagonal dimensional accuracy of guarantee half, half hexagonal form accuracy is improved; Because the hexagon cellular hole accuracy formed after two and half cellular steel band splicings directly affects the effect of product;
2, improve the acutance of half hexagon corner, eliminate corner circular arc as far as possible;
3, sheared edge and otch impulse-free robustness parallel with flute profile direction is ensured, because the burr after shaping affects the effect of product equally.
Half cellular steel band shaping can adopt two kinds of methods: rack-and-pinion roll extrusion and double rack extruding.
Rack-and-pinion roll extrusion shaping device principle is: utilize the trapezoidal gear of homotype and tooth bar to engage each other roll extrusion shaping.Its advantage is: equipment is simple, in theory can the longer steel band of roll extrusion.Shortcoming: one is that particularly crown corner cannot be engaged completely, so cannot eliminate corner circular arc because the engagement of trapezoidal gear is incomplete engagement.Shortcoming two is the cut-out work that simultaneously can not complete steel band on this equipment, only has other increase equipment to cut off.
Double rack squeezing shaping equipment principle is: the mutual squeezing shaping of trapezoidal tooth bar utilizing two homotypes.Its advantage is that shaping effect is good, precision is high, and can complete the cut-out work of steel band on the same device.Shortcoming is to ensure equipment stiffness, adds complexity and the volume of equipment.
Comprehensive above pluses and minuses, the present invention draws following inventive concept:
1, adopt double rack extrusion principle design new equipment, guarantee half hexagonal form accuracy, eliminate corner circular arc as far as possible;
2, the locate mode in view of shaping station double cellular steel band is identical with cut-out locate mode, can design while completing re-shaping exercise, complete cut-out work.
Structure as shown in Fig. 3, Fig. 6, of the present inventionly guarantee half of forced convection even flow field cellular steel band shaping, cutting machine, comprise horizontally disposed top board 2 and base plate 4, described top board 2 is fixedly connected with by many leads 8 with base plate 4, and described lead 8 is vertical with base plate 4 with top board 2.
In order to solve prior art Problems existing and overcome its defect, realize the quality of product and the goal of the invention of production efficiency that improve cellular board, the technical scheme that the present invention takes is:
As shown in Fig. 3, Fig. 6, of the present inventionly guarantee half of forced convection even flow field cellular steel band shaping, cutting machine, between described top board 2 and base plate 4, the pressing plate 3 parallel with base plate 4 with top board 2 is set; Described pressing plate 3 is arranged the fairlead 9 be fixedly connected with it; Described fairlead 9 is formed by pilot hole and described lead 8 and is slidably matched; Described base plate 4 arranges lower tooth bar 7; Described pressing plate 3 arranges upper rack 6; Under the state that described pressing plate 3 moves to lowest position, described upper rack 6 engages with lower tooth bar 7 profile of tooth; Described shaping, cutting machine are provided with pressing plate driving mechanism.
Fig. 4 is the schematic diagram that the profile of tooth of upper rack 6 is amplified; Fig. 5 is the schematic diagram that the profile of tooth of lower tooth bar 7 is amplified.
The advantage of technique scheme is: utilize the tooth bar theory of engagement, participates in the process of engagement, accurate shaping steel band profile of tooth at semi-hexagon shape steel band; Equipment plastic precision is high.
Described pressing plate driving mechanism is: be fixedly installed cylinder 1 at the upper surface of top board 2, and the piston rod of described cylinder 1 is passed down through top board 2, and the end of this piston rod is fixedly connected with pressing plate 3 by cylinder connector 10.
Adopt cylinder as power source, four guide pillars add ball linear bearing mechanism, ensure the stable of squeezing shaping, decrease wearing and tearing.
The end of described pressing plate 3 arranges cutting knife 5, and described cutting knife 5 forms the edge of a knife with the end of lower tooth bar 7.
Described upper rack 6 is arranged the guide finger 12 be fixedly connected with it; Described pressing plate 3 is provided with guide finger lining 13; The epimere of described guide finger 12 and the endoporus of guide finger lining 13 are formed and are slidably matched; The upper end of described guide finger 12 is provided with dome, and convex diameter of a circle is greater than the endoporus aperture of guide finger lining 13; Between described pressing plate 3 and upper rack 6, pocketed springs 11 on described guide finger 12, described spring 11 is Compress Spring; Under the effect of spring 11, described upper rack 6 and pressing plate 3 are at a distance of a segment distance, and the cutting edge of described cutting knife 5 is higher than the lower bead of upper rack 6.
According to the reason that the shaping of semi-hexagon shape steel band is consistent with the locate mode of steel strip cutting, re-shaping exercise and cut-out working group are combined on an equipment and complete; Through adjustment, shaping can be made and cut off to carry out respectively, also can make shaping and cut off to carry out simultaneously; Structure is simple, Use Adjustment is convenient.
In order to take into account cutting function, the present invention is that upper rack 6 devises two cover guide fingers 12 and guide finger lining 13, and adds shock mount 11 in centre.Like this, when cylinder 1 action, first upper rack 6 will compress and be shaped half cellular steel band under the effect of spring 11.If at this moment cutting function is activated, cellular for half under compacted state steel band is cut off by cutting knife 5.When upper rack 6 overcomes after spring force overlaps with pressing plate 3, upper and lower tooth bar is just by the complete shaping of half cellular steel band.
The right-hand member of pressing plate 3 is designed with the notch with the identical matched in clearance of cutting knife 5 width, has upper and lower two screwed holes in notch.When cutting knife 5 is fixed on upper screwed hole, cutting knife 5 mouthfuls does not play shear action above upper rack 6 stepped tooth, and equipment only does shaping.When cutting knife 5 is fixed on lower screwed hole, cutting knife 5 works, and equipment can be only used as to cut off, and also can shaping, cut-out use simultaneously.
When equipment only does the shaping used time, segmentation shaping can be carried out for longer half cellular steel band.
The concrete scheme of assembling of the present invention and adjustment:
Assembling process of the present invention:
After the two ends of pressing plate 3 load four fairleads 9, in four fairleads 9, insert four leads 8 respectively;
Top board 2 and base plate 4 is loaded with screw respectively at the two ends of lead 8;
Above top board 2, load cylinder 1, then load cylinder connector 10 at the external part of cylinder 1, the other end of cylinder connector 10 is connected with pressing plate 3 screw;
Pressing plate 3 loads two guide finger linings 13;
Get two guide fingers 12 from top to bottom through after pressing plate 3 is inserted in a spring 11 more respectively, be threaded with upper rack 6; Tooth bar 7 under connecting with screw on base plate 4;
In pressing plate 3 right-hand member groove, put into cutting knife 5 and be tightened by bolts, finishing equipment assembles.
The method of adjustment of equipment:
1, shaping tooth bar Mesh Clearance Adjustment:
First three screws of fastening for base plate 4 back side lower tooth bar 7 are unscrewed, then on lower tooth bar 7, put the half cellular steel band for preparing shaping;
Start source of the gas, allow cylinder 1 drive upper rack 6 to press down and put in place, observe two tooth bars engagements intact after, three screws of locking base plate 4 back side fastening lower tooth bar 7.
2, cutting function adjustment:
The present invention is except having shaping feature, and Yet-have has the cutting function of half-and-half cellular steel band.
When select shaping and steel strip cutting time, only need the screwed hole aimed at by the installing hole of cutting knife 5 below in pressing plate 3 right-hand member locating slot, see Fig. 3, to be tightened by bolts and can.Cutter gap is by designing and processing guarantee.
When select only to steel band shaping without the need to cutting function time, only need the installing hole of cutting knife 5 to be aimed at the screwed hole above in pressing plate 3 right-hand member locating slot, see Fig. 3, to be tightened by bolts and can.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (1)
1. guarantee half of forced convection even flow field cellular steel band shaping, cutting machine, comprise horizontally disposed top board (2) and base plate (4), described top board (2) is fixedly connected with by many leads (8) with base plate (4), and described lead (8) is vertical with base plate (4) with top board (2);
It is characterized in that:
Between described top board (2) and base plate (4), the pressing plate (3) parallel with base plate (4) with top board (2) is set;
Described pressing plate (3) above arranges the fairlead (9) be fixedly connected with it; Described fairlead (9) is formed by pilot hole and described lead (8) and is slidably matched;
Described base plate (4) arranges lower tooth bar (7); Described pressing plate (3) arranges upper rack (6); Under the state that described pressing plate (3) moves to lowest position, described upper rack (6) engages with lower tooth bar (7) profile of tooth;
Described shaping, cutting machine are provided with pressing plate driving mechanism;
Described pressing plate driving mechanism is: be fixedly installed cylinder (1) at the upper surface of top board (2), the piston rod of described cylinder (1) is passed down through top board (2), and the end of this piston rod is fixedly connected with pressing plate (3) by cylinder connector (10);
The end of described pressing plate (3) arranges cutting knife (5), and described cutting knife (5) forms the edge of a knife with the end of lower tooth bar (7).
Described upper rack (6) above arranges the guide finger (12) be fixedly connected with it; Described pressing plate (3) is provided with guide finger lining (13); The epimere of described guide finger (12) and the endoporus of guide finger lining (13) are formed and are slidably matched; The upper end of described guide finger (12) is provided with dome, and convex diameter of a circle is greater than the endoporus aperture of guide finger lining (13); Between described pressing plate (3) and upper rack (6), the upper pocketed springs (11) of described guide finger (12), described spring (11) is Compress Spring; Under the effect of spring (11), described upper rack (6) and pressing plate (3) are at a distance of a segment distance, and the cutting edge of described cutting knife (5) is higher than the lower bead of upper rack (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510894862.8A CN105364169B (en) | 2014-08-06 | 2014-08-06 | Ensure half honeycomb strip shaping, the cutting machine of forced convection even flow field |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410383695.6A CN104139208B (en) | 2014-08-06 | 2014-08-06 | Guarantee half cellular steel band shaping, the cutting machine of forced convection even flow field |
| CN201510894862.8A CN105364169B (en) | 2014-08-06 | 2014-08-06 | Ensure half honeycomb strip shaping, the cutting machine of forced convection even flow field |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410383695.6A Division CN104139208B (en) | 2014-08-06 | 2014-08-06 | Guarantee half cellular steel band shaping, the cutting machine of forced convection even flow field |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105364169A true CN105364169A (en) | 2016-03-02 |
| CN105364169B CN105364169B (en) | 2018-01-09 |
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| CN201510894848.8A Active CN105382543B (en) | 2014-08-06 | 2014-08-06 | Ensure half honeycomb strip shaping, the cutting machine of forced convection even flow field |
| CN201510897803.6A Active CN105345479B (en) | 2014-08-06 | 2014-08-06 | Ensure half honeycomb strip shaping, the method for adjustment of cutting machine of forced convection even flow field |
| CN201510897805.5A Active CN105397177B (en) | 2014-08-06 | 2014-08-06 | Ensure half honeycomb strip shaping, the assembly method of cutting machine of forced convection even flow field |
| CN201410383695.6A Active CN104139208B (en) | 2014-08-06 | 2014-08-06 | Guarantee half cellular steel band shaping, the cutting machine of forced convection even flow field |
| CN201510894862.8A Active CN105364169B (en) | 2014-08-06 | 2014-08-06 | Ensure half honeycomb strip shaping, the cutting machine of forced convection even flow field |
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| CN201510894848.8A Active CN105382543B (en) | 2014-08-06 | 2014-08-06 | Ensure half honeycomb strip shaping, the cutting machine of forced convection even flow field |
| CN201510897803.6A Active CN105345479B (en) | 2014-08-06 | 2014-08-06 | Ensure half honeycomb strip shaping, the method for adjustment of cutting machine of forced convection even flow field |
| CN201510897805.5A Active CN105397177B (en) | 2014-08-06 | 2014-08-06 | Ensure half honeycomb strip shaping, the assembly method of cutting machine of forced convection even flow field |
| CN201410383695.6A Active CN104139208B (en) | 2014-08-06 | 2014-08-06 | Guarantee half cellular steel band shaping, the cutting machine of forced convection even flow field |
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| CN106141288B (en) * | 2015-03-16 | 2019-01-01 | 江苏雨燕模塑有限公司 | Automobile parts automatic cutter |
| CN107813170A (en) * | 2017-11-06 | 2018-03-20 | 无锡鹰贝精密轴承有限公司 | Valve element milling sulculus quick clamping tool |
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| JPS5320187A (en) * | 1976-08-07 | 1978-02-24 | Kawabata Seisakushiyo Yuugen | Die for punching products in damperrfabricating machine |
| JPS56130593A (en) * | 1980-03-14 | 1981-10-13 | Hitachi Ltd | Method of manufacturing corrugated fin and apparatus therefor |
| JP2004181489A (en) * | 2002-12-03 | 2004-07-02 | Honda Motor Co Ltd | Press-forming method |
| CN103357725A (en) * | 2012-04-03 | 2013-10-23 | 康奈可关精株式会社 | Fin processing apparatus |
| CN103521617A (en) * | 2013-10-18 | 2014-01-22 | 无锡微研有限公司 | Mold structure for adjusting air-conditioner fin radians |
| CN203725567U (en) * | 2014-01-27 | 2014-07-23 | 广东新中南航空港建设有限公司 | Cold pressing forming machine for three-dimensional curved surface corrugated steel plates |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105382543B (en) | 2017-11-21 |
| CN104139208A (en) | 2014-11-12 |
| CN105345479B (en) | 2017-11-21 |
| CN105397177A (en) | 2016-03-16 |
| CN104139208B (en) | 2016-05-25 |
| CN105397177B (en) | 2017-11-24 |
| CN105364169B (en) | 2018-01-09 |
| CN105382543A (en) | 2016-03-09 |
| CN105345479A (en) | 2016-02-24 |
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