CN201871612U - Multi-cutter forming die for fins of plate-fin heat exchanger - Google Patents
Multi-cutter forming die for fins of plate-fin heat exchanger Download PDFInfo
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- CN201871612U CN201871612U CN2010206007181U CN201020600718U CN201871612U CN 201871612 U CN201871612 U CN 201871612U CN 2010206007181 U CN2010206007181 U CN 2010206007181U CN 201020600718 U CN201020600718 U CN 201020600718U CN 201871612 U CN201871612 U CN 201871612U
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Abstract
The utility model relates to a multi-cutter forming die for fins of a plate-fin heat exchanger, which consists of an upper die and a lower die, wherein the upper die and the lower die are arranged on a punch framework and can be combined and separated. The multi-cutter forming die is characterized in that the upper die comprises an upper cutter rest, an upper left stripper plate and an upper right stripper plate, the upper cutter rest is provided with an upper mounting groove, at least two rows of upper cutters are fixed in the upper mounting groove, and each row of upper cutters is clamped by upper cutter clamping plates on two sides of the cutters; the lower die comprises a lower cutter rest, a lower left stripper plate and a lower right stripper plate, the lower cutter rest is provided with a lower mounting groove, at least two rows of lower cutters are fixed in the lower mounting groove, and each row of lower cutters is clamped by lower cutter clamping plates on two sides of the cutters. The upper die and the lower die are molded integrally and provided with multiple bends, and accordingly the forming die has high production efficiency. Further, the lower cutters can move left and right to push fins gradually, and continuous stamping can be realized without extra pushing mechanism. In addition, each tooth of the fins is subjected to twice plastic deformation when the fins are formed through stamping.
Description
Technical field
The utility model relates to a kind of plate-fin heat exchanger fin multitool mould.
Background technology
Plate-fin heat exchanger is the heat exchanger of all kinds of gas separation equipments, is widely used in fields such as petrochemical industry, Aero-Space, and plate-fin heat exchanger has compact conformation, and is in light weight, and the advantage of heat exchange efficiency, especially heat exchange efficiency are higher by 30% than other heat exchangers.Plate-fin heat exchanger fin is divided into flat type, sawtooth pattern, these three kinds of fundamental types of ripple type, shown in accompanying drawing 12～14.Fin is the critical component of plate-fin heat exchanger, accounts for more than 80% of whole heat exchanger volume, the heat exchange efficiency of the accuracy affects plate-fin heat exchanger of fin and reliable, security performance.
For many years, plate-fin heat exchanger fin is with its complex forming technology, the accuracy of manufacture requires height to become whole industry technical barrier, existing fin mould is the mould of hilted broadsword form, and the fin precision that stamps out does not reach the required precision of mesohigh fin, and wide cut is narrow, life-span is short, be difficult to satisfy production requirement, and this mould adopts the unsteady stripping means of spring to carry out the demoulding, the accuracy of manufacture is poor.As a patent No. is a kind of fin mould so the Chinese utility model patent " a kind of automatic progressive press tool of special-shaped fin " of ZL92232151.5 (notification number is CN2142762Y) has disclosed.
At aforementioned present situation, industry active demand high accuracy, big wide cut, long-life fin mould.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of production efficiency high plate-fin heat exchanger fin multitool mould at above-mentioned prior art present situation, and this shaping mould prodigiosin is produced the plate-fin heat exchanger fin of high accuracy, big wide cut.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of plate-fin heat exchanger fin multitool mould, it is made of the separable part of the upper die and the part of the lower die that are arranged on the frame of punch, it is characterized in that: described part of the upper die comprises the upper cutter head that the relative frame of punch of energy moves up and down, and and press machine is fixed and the last left stripper plate and the last right stripper plate of horizontal interval setting each other, the bottom surface of going up left stripper plate and last right stripper plate is positioned on the same horizontal plane, described upper cutter head is provided with mounting groove, at least be fixed with two in the last mounting groove and arrange fixing a cutting tool of being intervally installed, every row fixes a cutting tool by the clamping plate clamping of fixing a cutting tool of both sides, the clamping plate of fixing a cutting tool expose upper cutter head downwards, fix a cutting tool and expose the clamping plate of fixing a cutting tool downwards, the described clamping plate of fixing a cutting tool and fix a cutting tool can pass from last left stripper plate and the gap of going up between the right stripper plate; Described part of the lower die comprises about the relative frame of punch of energy and the following tool rest of move left and right, and and press machine is fixed and the bottom left stripper plate and the bottom right stripper plate of horizontal interval setting each other, the end face of bottom left stripper plate and bottom right stripper plate is positioned on the same horizontal plane, and between the bottom surface of last left stripper plate and last right stripper plate and the end face of bottom left stripper plate and bottom right stripper plate spacing is arranged, described tool rest down is provided with down mounting groove, at least be fixed with the bottom tool that two rows are intervally installed in the following mounting groove, every row's bottom tool is clamped by the bottom tool clamping plate of both sides, the bottom tool clamping plate upwards expose tool rest down, bottom tool upwards exposes the bottom tool clamping plate, and bottom tool and bottom tool clamping plate can pass from the gap between bottom left stripper plate and the bottom right stripper plate and can left and right sides slippage.
The above-mentioned L shaped groove of mounting groove of going up for running through along its length, the described clamping plate of fixing a cutting tool and fix a cutting tool are fixed a cutting tool the backing plate clamping by two and are placed this L shaped groove, described upper cutter head right side wall is fixed with the pressing plate of fixing a cutting tool, this pressing plate of fixing a cutting tool will fix a cutting tool, fix a cutting tool clamping plate and backing plate of fixing a cutting tool is pressed on left and right directions in the L shaped groove, the both sides, front and back of described upper cutter head are fixed with side guide respectively, and side guide will fix a cutting tool, fix a cutting tool clamping plate and backing plate of fixing a cutting tool is pressed on fore-and-aft direction in the L shaped groove on this; The L shaped groove of described mounting groove down for running through along its length, described bottom tool and bottom tool clamping plate place this L shaped groove by the clamping of two bottom tool backing plates, described tool rest right side wall down is fixed with the bottom tool pressing plate, this bottom tool pressing plate is pressed on bottom tool, bottom tool clamping plate and bottom tool backing plate in the L shaped groove on left and right directions, the described both sides, front and back of tool rest down are fixed with down side guide respectively, and this time side guide is pressed on bottom tool, bottom tool clamping plate and bottom tool backing plate in the L shaped groove on fore-and-aft direction.
The mode of aforementioned mounting cutter can easily be installed to cutter on the tool rest, and can be according to row's number of cutter, adapt to the cutter backing plate thickness of different-thickness, and with the cutter absolute fix in the mounting groove of tool rest, row's number of cutter can arbitrarily be set.
The above-mentioned pressing plate of fixing a cutting tool is fixed by a plurality of bolts and upper cutter head right side wall, is provided with lock washer between the head of bolt and the upper cutter head right side wall; Described bottom tool pressing plate is fixed by a plurality of bolts and following tool rest right side wall, is provided with lock washer between the head of bolt and the upper cutter head right side wall; The described side guide of going up is fixed by sidewall before and after bolt and the upper cutter head, is provided with lock washer between the sidewall before and after the head of bolt and the upper cutter head; Described side guide is down fixed by bolt and following tool rest front and back sidewall, is provided with lock washer between the sidewall before and after the head of bolt and the following tool rest.
The above-mentioned pressing plate inner face of fixing a cutting tool has many anti-skidding stripeds that are provided with along its length; Described bottom tool pressing plate inner face has many anti-skidding stripeds that are provided with along its length.The anti-skidding striped of cutter pressing plate can increase the frictional force of cutter pressing plate and cutter backing plate, can better cutter, cutter cushion block be pressed in the mounting groove.
Plate-fin heat exchanger fin is divided into flat type, sawtooth pattern, these three kinds of fundamental types of ripple type, the type different according to fin, and above-mentioned fix a cutting tool and bottom tool can be the flat cutter or is the zigzag cutter, or is the corrugated cutter.
Compared with prior art, advantage of the present utility model is: because all there are at least two row's cutters part of the upper die and part of the lower die, so can realize moulding, shaping and typing once finishes, the production efficiency height, and all right move left and right of bottom tool, and fin is moved forward gradually, need not extra pusher and just can realize continuous punching press, during the fin punch forming, each tooth of fin all carried out twice plastic deformation at least, eliminated the influence of fin resilience, overcome the low shortcoming of existing fin hilted broadsword mould pitch accuracy pitch accuracy; Many row's cutters and cutter clamping plate constitute the monoblock type molding cutter together, have solved the difficult problem that existing single tooth type shaping blades intensity is low, precision is low, the life-span is low, installation is loaded down with trivial details; Cutter, cutter clamping plate and tool rest absolute fix, the cutter end face is a fixed value to the corresponding a kind of fin of the distance of tool-holder board plane, like this in the fin forming process, during the upper and lower mould matched moulds, the cutter end face just has individual extrusion process to the fin end face, the fin end face is between the bottom surface of cutter end face and cutter clamping plate, the wing top of fin can stamp out the plane, improved the wing high accuracy, unsteady location causes wing high unsteady big because of its blade adopts to have solved existing fin mould, the problem that precision is low; This mould adopts the fixed demoulding; bottom left stripper plate and bottom right stripper plate and mold separation; bottom left stripper plate and bottom right stripper plate are fixed on realizes the demoulding on the frame of punch, solve the unsteady demoulding that existing fin mould mould emptier is arranged on the mould and cause the precision problem of unstable.
Description of drawings
Fig. 1 is the structural representation (part of the upper die and part of the lower die matched moulds state) of the utility model embodiment;
Fig. 2 is the upward view of part of the upper die among the utility model embodiment;
Fig. 3 is the upward view of part of the lower die among the utility model embodiment;
Fig. 4 is the perspective view that flat cutter and cutter clamping plate are installed among the utility model embodiment;
Fig. 5 is the perspective view that zigzag cutter and cutter clamping plate are installed among the utility model embodiment;
Fig. 6 is the perspective view that corrugated cutter and cutter clamping plate are installed among the utility model embodiment;
Fig. 7 is the structural representation (shifting state under the part of the lower die) of the utility model embodiment;
Fig. 8 is the structural representation (part of the lower die moves down and the state that moves to left) of the utility model embodiment;
Fig. 9 for the structural representation of the utility model embodiment (part of the lower die move down and move to left after move the matched moulds state on again);
Figure 10 is the structural representation (part of the upper die raised state) of the utility model embodiment;
Figure 11 is the structural representation of the utility model embodiment (part of the lower die move to right state);
Figure 12 is the perspective view of flat type plate-fin heat exchanger fin;
Figure 13 is the perspective view of sawtooth pattern plate-fin heat exchanger fin;
Figure 14 is the perspective view of ripple type plate-fin heat exchanger fin.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Shown in Fig. 1～11, be a preferred embodiment of the present utility model.
A kind of plate-fin heat exchanger fin multitool mould, it is made of the separable part of the upper die and the part of the lower die that are arranged on the frame of punch.
The part of the upper die comprises the upper cutter head 1a that the relative frame of punch of energy moves up and down, and and press machine is fixed and the last left stripper plate 2a and the last right stripper plate 3a of horizontal interval setting each other, and upward the bottom surface of left stripper plate 2a and last right stripper plate 3a is positioned on the same horizontal plane; Upper cutter head 1a is provided with mounting groove 11a, be fixed with the 4a that fixes a cutting tool that two rows are intervally installed in the last mounting groove 11a, certainly also can be three rows or the 4a that fixes a cutting tool that arranges more, the 4a that fixes a cutting tool is rectangular tabular, the interval that adjacent two rows fix a cutting tool between the 4a is corresponding with the width of each tooth of fin of want moulding, every row 4a that fixes a cutting tool is clamped by the clamping plate 5a that fixes a cutting tool of both sides, the clamping plate 5a that fixes a cutting tool exposes upper cutter head 1a downwards, the 4a that fixes a cutting tool exposes the clamping plate 5a that fixes a cutting tool downwards, the distance that the 4a that fixes a cutting tool exposes the clamping plate 5a that fixes a cutting tool is a fixed value, and the fix a cutting tool 4a and the clamping plate 5a that fixes a cutting tool can just pass from last left stripper plate 2a and the gap of going up between the right stripper plate 3a.
The 4a that fixes a cutting tool is fixed in the mounting groove 11a in the following ways with the clamping plate 5a that fixes a cutting tool: go up the L shaped groove of mounting groove 11a for running through along its length, the fix a cutting tool 4a and the clamping plate 5a that fixes a cutting tool clamps and places this L shaped groove by the two backing plate 6a that fix a cutting tool, upper cutter head 1a right side wall is fixed with the pressing plate 7a that fixes a cutting tool by a plurality of bolts 9, be provided with lock washer 10 between the head of bolt 9 and the upper cutter head 1a right side wall, this pressing plate 7a that fixes a cutting tool 4a that to fix a cutting tool, the clamping plate 5a that fixes a cutting tool is pressed on left and right directions in the L shaped groove with the backing plate 6a that fixes a cutting tool, and the pressing plate 7a inner face of fixing a cutting tool has many anti-skidding striped 71a that are provided with along its length; The two side is fixed with side guide 8a respectively by bolt 9 before and after the upper cutter head 1a, be provided with lock washer 10 between the sidewall before and after the head of bolt 9 and the upper cutter head 1a, will fix a cutting tool 4a, fix a cutting tool clamping plate 5a and the backing plate 6a that fixes a cutting tool of side guide 8a is pressed on fore-and-aft direction in the L shaped groove on this;
The part of the lower die comprises about the relative frame of punch of energy and the following tool rest 1b of move left and right, and and press machine is fixed and the bottom left stripper plate 2b and the bottom right stripper plate 3b of horizontal interval setting each other, the end face of bottom left stripper plate 2b and bottom right stripper plate 3b is positioned on the same horizontal plane, and between the bottom surface of last left stripper plate 2a and last right stripper plate 3a and the end face of bottom left stripper plate 2b and bottom right stripper plate 3b space D is arranged, this space D is identical with the height of fin, following tool rest 1b is provided with down mounting groove 11b, be fixed with the bottom tool 4b that two rows are intervally installed in the following mounting groove 11b, certainly also can be three rows or arrange bottom tool 4b more, bottom tool 4b is rectangular tabular, interval between adjacent two row's bottom tool 4b is corresponding with the width of each tooth of fin of want moulding, the interval that two rows fix a cutting tool between the 4a is identical with the interval between two row's bottom tool 4b, every row's bottom tool 4b is clamped by the bottom tool clamping plate 5b of both sides, bottom tool clamping plate 5b upwards exposes tool rest 1b down, bottom tool 1b upwards exposes bottom tool clamping plate 5b, the 4a length of fixing a cutting tool that exposes outside the clamping plate 5a that fixes a cutting tool is identical with the bottom tool 1b length that exposes outside bottom tool clamping plate 5b, and bottom tool 4b and bottom tool clamping plate 5b can pass from the gap between bottom left stripper plate 2b and the bottom right stripper plate 3b and can left and right sides slippage.
If plate-fin heat exchanger fin is a flat type, as shown in Figure 4, fix a cutting tool so 4a and bottom tool 4b are the flat cutter.
If plate-fin heat exchanger fin is a sawtooth pattern, as shown in Figure 5, fix a cutting tool so 4a and bottom tool 4b are the zigzag cutter.
If plate-fin heat exchanger fin is a ripple type, as shown in Figure 6, fix a cutting tool so 4a and bottom tool 4b are the corrugated cutter.
Below be example with the mould of the plate-fin heat exchanger fin of producing flat type, the operation principle of this mould is described.
Because the fix a cutting tool 4a and the bottom tool 4b absolute fix of upper and lower mould, the 4a length of fixing a cutting tool that exposes outside the clamping plate 5a that fixes a cutting tool is identical with the bottom tool 1b length that exposes outside bottom tool clamping plate 5b, in fin 12 forming processes, during the upper and lower mould matched moulds, just there is individual extrusion process the bottom surface of fixing a cutting tool to fin 12 bottom surfaces, can stamp out the plane at the bottom of the wing of fin 12;
As shown in Figure 7, then, following tool rest 1b drives bottom tool 4b and bottom tool clamping plate 5b moves down, and bottom tool 4b can withdraw from fin 12 downward opening teeth;
As shown in Figure 8, then, following tool rest 1b moves to left;
As shown in Figure 9, descending tool rest 1b to drive on bottom tool 4b and the bottom tool clamping plate 5b again moves, one of them bottom tool 4b punching press bending forming goes out the next tooth of fin 12, and another bottom tool 4b carries out the secondary punching press to last tooth, finish shaping and typing, eliminated the influence of fin 12 resiliences pitch accuracy;
As shown in figure 10, upper cutter head 1a drives on the fix a cutting tool 4a and the clamping plate 5a that fixes a cutting tool and moves again, since fin 12 be limited at left stripper plate 2a and on have in the space D between the end face of the bottom surface of right stripper plate 3a and bottom left stripper plate 2b and bottom right stripper plate 3b, so the 4a that fixes a cutting tool can withdraw from fin 12 openings tooth up;
As shown in figure 11, then, following tool rest 1b moves to right, because bottom tool 4b is also in fin 12 downward opening teeth, so the tool rest 1b whole fin 12 of drive that moves to right moves to right down;
As shown in Figure 1, upper cutter head 1a drives fix a cutting tool 4a and the clamping plate 5a that fixes a cutting tool and moves down then, one of them 4a punching press bending forming of fixing a cutting tool goes out the next tooth of fin 12, and another 4a that fixes a cutting tool carries out the secondary punching press to last tooth, finish shaping and typing, eliminated the influence of fin 12 resiliences pitch accuracy.
The circulation said process.
Claims (7)
1. plate-fin heat exchanger fin multitool mould, it is made of the separable part of the upper die and the part of the lower die that are arranged on the frame of punch, it is characterized in that: described part of the upper die comprises
The upper cutter head (1a) that the relative frame of punch of energy moves up and down, and and press machine is fixed and the last left stripper plate (2a) and the last right stripper plate (3a) of horizontal interval setting each other, the bottom surface of going up left stripper plate (2a) and last right stripper plate (3a) is positioned on the same horizontal plane, described upper cutter head (1a) is provided with mounting groove (11a), at least be fixed with fix a cutting tool (4a) that two rows are intervally installed in the last mounting groove (11a), every row fix a cutting tool (4a) clamp by the clamping plate of fixing a cutting tool (5a) of both sides, the clamping plate (5a) of fixing a cutting tool expose upper cutter head (1a) downwards, fix a cutting tool (4a) expose the clamping plate of fixing a cutting tool (5a) downwards, described fixing a cutting tool (4a) and the clamping plate of fixing a cutting tool (5a) can pass from the gap between last left stripper plate (2a) and the last right stripper plate (3a);
Described part of the lower die comprises
Relatively frame of punch up and down and the following tool rest (1b) of move left and right, and and press machine is fixed and the bottom left stripper plate (2b) and the bottom right stripper plate (3b) of horizontal interval setting each other, the end face of bottom left stripper plate (2b) and bottom right stripper plate (3b) is positioned on the same horizontal plane, and upward between the end face of the bottom surface of left stripper plate (2a) and last right stripper plate (3a) and bottom left stripper plate (2b) and bottom right stripper plate (3b) spacing (D) is arranged, described tool rest (1b) down is provided with down mounting groove (11b), at least be fixed with the bottom tool (4b) that two rows are intervally installed in the following mounting groove (11b), every row's bottom tool (4b) is clamped by the bottom tool clamping plate (5b) of both sides, bottom tool clamping plate (5b) upwards expose tool rest (1b) down, bottom tool (1b) upwards exposes bottom tool clamping plate (5b), and described bottom tool (4b) and bottom tool clamping plate (5b) can pass from the gap between bottom left stripper plate (2b) and the bottom right stripper plate (3b) and can left and right sides slippage.
2. plate-fin heat exchanger fin multitool mould according to claim 1, it is characterized in that: the described L shaped groove of mounting groove (11a) of going up for running through along its length, described fixing a cutting tool (4a) and the clamping plate of fixing a cutting tool (5a) are fixed a cutting tool backing plate (6a) clamping by two and are placed this L shaped groove, described upper cutter head (1a) right side wall is fixed with the pressing plate of fixing a cutting tool (7a), this pressing plate of fixing a cutting tool (7a) will fix a cutting tool (4a), fix a cutting tool clamping plate (5a) and the backing plate of fixing a cutting tool (6a) is pressed on left and right directions in the L shaped groove, the both sides, front and back of described upper cutter head (1a) are fixed with side guide (8a) respectively, side guide on this (8a) will fix a cutting tool (4a), fix a cutting tool clamping plate (5a) and the backing plate of fixing a cutting tool (6a) is pressed on fore-and-aft direction in the L shaped groove;
The L shaped groove of described mounting groove (1b) down for running through along its length, described bottom tool (4b) and bottom tool clamping plate (5b) place this L shaped groove by the clamping of two bottom tool backing plates (6b), described tool rest (1b) right side wall down is fixed with bottom tool pressing plate (7b), this bottom tool pressing plate (7b) is with bottom tool (4b), bottom tool clamping plate (5b) and bottom tool backing plate (6b) are pressed on left and right directions in the L shaped groove, the described both sides, front and back of tool rest (1b) down are fixed with down side guide (8b) respectively, and this time side guide (8b) is with bottom tool (4b), bottom tool clamping plate (5b) and bottom tool backing plate (6b) are pressed on fore-and-aft direction in the L shaped groove.
3. plate-fin heat exchanger fin multitool mould according to claim 2, it is characterized in that: the described pressing plate of fixing a cutting tool (7a) is fixed by a plurality of bolts (9) and upper cutter head (1a) right side wall, is provided with lock washer (10) between the head of bolt (9) and upper cutter head (1a) right side wall; Described bottom tool pressing plate (7b) is fixed by a plurality of bolts (9) and following tool rest (1b) right side wall, is provided with lock washer (10) between the head of bolt (9) and upper cutter head (1b) right side wall; The described side guide (8a) of going up is fixed by bolt (9) and upper cutter head (1a) front and back sidewall, is provided with lock washer (10) between the sidewall before and after the head of bolt (9) and the upper cutter head (1a); Described side guide (8b) is down fixed by bolt (9) and following tool rest (1b) front and back sidewall, is provided with lock washer (10) between the sidewall before and after the head of bolt (9) and the following tool rest (1b).
4. plate-fin heat exchanger fin multitool mould according to claim 3 is characterized in that: the described pressing plate of fixing a cutting tool (7a) inner face has many anti-skidding stripeds (71a) that are provided with along its length; Described bottom tool pressing plate (7b) inner face has many anti-skidding stripeds (71b) that are provided with along its length.
5. according to the described plate-fin heat exchanger fin multitool of arbitrary claim mould in the claim 1～4, it is characterized in that: described fixing a cutting tool (4a) and bottom tool (4b) are the flat cutter.
6. according to the described plate-fin heat exchanger fin multitool of arbitrary claim mould in the claim 1～4, it is characterized in that: described fixing a cutting tool (4a) and bottom tool (4b) are the zigzag cutter.
7. according to the described plate-fin heat exchanger fin multitool of arbitrary claim mould in the claim 1～4, it is characterized in that: described fixing a cutting tool (4a) and bottom tool (4b) are the corrugated cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206007181U CN201871612U (en) | 2010-11-04 | 2010-11-04 | Multi-cutter forming die for fins of plate-fin heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206007181U CN201871612U (en) | 2010-11-04 | 2010-11-04 | Multi-cutter forming die for fins of plate-fin heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201871612U true CN201871612U (en) | 2011-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206007181U Expired - Lifetime CN201871612U (en) | 2010-11-04 | 2010-11-04 | Multi-cutter forming die for fins of plate-fin heat exchanger |
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| Country | Link |
|---|---|
| CN (1) | CN201871612U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102151741A (en) * | 2010-11-04 | 2011-08-17 | 张舜德 | Multi-blade fin forming mould for fin heat exchanger |
| CN103372608A (en) * | 2013-07-15 | 2013-10-30 | 杭州杭氧股份有限公司 | Stamping die for serrated fins |
-
2010
- 2010-11-04 CN CN2010206007181U patent/CN201871612U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102151741A (en) * | 2010-11-04 | 2011-08-17 | 张舜德 | Multi-blade fin forming mould for fin heat exchanger |
| CN102151741B (en) * | 2010-11-04 | 2013-10-16 | 张舜德 | Multi-blade fin forming mould for fin heat exchanger |
| CN103372608A (en) * | 2013-07-15 | 2013-10-30 | 杭州杭氧股份有限公司 | Stamping die for serrated fins |
| CN103372608B (en) * | 2013-07-15 | 2015-12-09 | 杭州杭氧股份有限公司 | A kind of diel of serrated fin |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Ningbo Rongzhi Automation Technology Co.,Ltd. Assignor: Wang Rong Contract record no.: 2012330000400 Denomination of utility model: Multi-blade fin forming mould for fin heat exchanger Granted publication date: 20110622 License type: Common License Record date: 20120625 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20110622 Effective date of abandoning: 20131016 |
|
| RGAV | Abandon patent right to avoid regrant |