CN108620508A - The rolling device of heat exchanger internally spiral heat-exchanging tube core - Google Patents
The rolling device of heat exchanger internally spiral heat-exchanging tube core Download PDFInfo
- Publication number
- CN108620508A CN108620508A CN201810466189.1A CN201810466189A CN108620508A CN 108620508 A CN108620508 A CN 108620508A CN 201810466189 A CN201810466189 A CN 201810466189A CN 108620508 A CN108620508 A CN 108620508A
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- Prior art keywords
- pressure roller
- roller frame
- servo motor
- connect
- heat exchanger
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
- B21D53/06—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of metal tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Assembly (AREA)
Abstract
The present invention relates to a kind of rolling devices of heat exchanger internally spiral heat-exchanging tube core, which solve the rolling machine accuracy for being currently used for spiral heat exchange tube is low, inconvenient to use, the technical issues of low production efficiency comprising body, roller, main shaft speed-down servo motor, feed servo motor, leading screw, nut seat, pressure roller frame base, pressure roller frame, cylinder, pressure roller, two guide rails, touch control screen and master controller；The both ends of roller are connect by bearing block with body, and main shaft speed-down servo motor is connected by one end of transmission mechanism and roller；The both ends of leading screw are connect by bearing block with body, the output shaft of feed servo motor is connect by transmission mechanism with leading screw, nut seat is connect with leading screw, pressure roller frame base is fixedly connected with nut seat, pressure roller frame is connect with pressure roller frame base, pressure roller is connect with pressure roller frame, and cylinder is connected between pressure roller frame base and pressure roller frame, and two guide rails are connected on body side by side.The present invention is widely used in rolling for spiral heat exchange tube.
Description
Technical field
The present invention relates to spiral winding tube type heat exchanger technical fields, are changed in particular to a kind of heat exchanger inside spin
The rolling device of heat tube core.
Background technology
Screw pipe heat exchanger is made of core and shell two parts, and core is mainly made of spiral heat exchange tube,
Shell is made of cylinder and end socket etc., and upper low head respectively sets two openings.It is in CN204866968U with reference to Authorization Notice No.
State's utility model patent, spiral heat exchange tube are existing to be accurately controlled around pipe machine presence by being machined into around pipe
The technological deficiency of the shape of helix, additionally, there are to spiral stainless steel tube the number of plies and to roll diameter calculation comparatively laborious, make
With inconvenience, low production efficiency.
Invention content
The present invention is exactly the life in order to which the rolling machine accuracy for solving to be currently used for spiral heat exchange tube is low, inconvenient to use
The low technical problem of efficiency is produced, the heat exchanger internally spiral heat-exchanging tube core that a kind of precision is high, easy to use, production efficiency is high is provided
Rolling device.
The technical scheme is that a kind of rolling device of heat exchanger internally spiral heat-exchanging tube core is provided, including body, rolling
Cylinder, main shaft speed-down servo motor, feed servo motor, leading screw, nut seat, pressure roller frame base, pressure roller frame, column, flat axis,
Cylinder, pressure roller, the first guide rail, the second guide rail, touch control screen and master controller；The both ends of roller are connected by bearing block and body
It connects, main shaft speed-down servo motor is connected by one end of transmission mechanism and roller；The both ends of leading screw are connected by bearing block and body
It connects, the output shaft of feed servo motor is connect by transmission mechanism with leading screw, and nut seat is connect with leading screw；
Pressure roller frame base is fixedly connected with nut seat, and column is fixedly connected with pressure roller frame base, and flat axis is solid with column
The both sides of fixed connection, pressure roller frame are respectively equipped with adjusting circular hole, and flat axis, which passes through, adjusts circular hole, and cylinder connects with pressure roller frame base
It connects, pressure roller is connect with the front end of pressure roller frame, and the piston rod of cylinder is connect with the rear end of pressure roller frame；First guide rail and second is led
Rail is connected on body side by side, and pressure roller frame base is stretched by axis is connected with the first rolling bearing and the second rolling bearing, and first
Rolling bearing and the second rolling bearing are respectively supported on the first guide rail and the second guide rail；The circumference of pressure roller is equipped with annular groove；
Touch control screen with and master controller connect, main shaft speed-down servo motor and feed servo motor respectively with main control
Device connects.
Preferably, the transmission mechanism between main shaft speed-down servo motor and roller includes chain, chuck and two sprocket wheels, chain
Item is connected between two sprocket wheels, the output axis connection of one of sprocket wheel and main shaft speed-down servo motor；Another sprocket wheel
Sprocket shaft is connect by bearing block with body, chuck and the sprocket wheel axis connection；The end face of one end of roller is equipped with circular hole, chuck
On be connected with round guide post, circle guide post is inserted into circular hole, and the output shaft of feed servo motor passes through synchronous belt drive mechanism and connects with leading screw
It connects.
Preferably, annular groove is semicircle annular groove.
Preferably, master controller is PLC controller.
Preferably, the front end of pressure roller and pressure roller frame is rotatablely connected.
The invention has the advantages that realizing automation coiling, easy to operate, production efficiency is high, can accurately control spiral shell
Spin line, heat exchange tube spacing, heat exchange interlamellar spacing have according to various heat exchange amount, various outer diameter, different total lengths, various heat exchange pipe
The heat exchanger requirement of diameter, obtains optimal case, Instructing manufacture, avoids complicated calculating process automatically.
Further aspect of the present invention is clearly stated that in the description of detailed description below.
Description of the drawings
Fig. 1 is the front view of heat exchanger；
Fig. 2 is the structural schematic diagram of spiral heat exchange tube core (three layers)；
Fig. 3 is the structural schematic diagram of single layer spiral heat exchange tube；
Fig. 4 is the schematic diagram of heat exchange tube spacing；
Fig. 5 is the structural schematic diagram of rolling device；
Fig. 6 is the structural schematic diagram of rolling device；
Fig. 7 is the connection diagram of pressure roller frame base and the guide rail on body；
Fig. 8 is the schematic diagram that roller is connect by chuck with sprocket wheel；
Fig. 9 is the schematic diagram of control system；
The man-machine interface of Figure 10 touch control screens；
Figure 11 is the flow chart of method for coiling；
Figure 12 is the stereogram of pressure roller；
Figure 13 is the front view of pressure roller；
Figure 14 is pressure roller left view.
Symbol description in figure：
1. shell, 2. spiral heat exchange tube cores, 3. heating medium entrances, the outlet of 4. heating mediums, 5. by heating fluid inlet,
6. by heated fluid outlet；7. body, 8. rollers, 8-1. circular holes, 9. pressure rollers, 9-1. annular grooves, 10. pressure roller frames, 11. bearings
Seat, 12. touch control screens, 13. sprocket wheels, 13-1. chucks, 13-2. circle guide posts, 14. chains, 15. main shaft speed-down servo motors,
16. feed servo motor, 17. synchronous belt drive mechanisms, 18. leading screws, 19. nut seats, 20. cylinders, 21. pressure roller frame bases,
22. the first guide rail, 23. second guide rails, 24. first rolling bearings, 25. second rolling bearings, 26. columns, 27. flat axis, 28. adjust
Pitch circle hole, 31. master controllers.
Specific implementation mode
Referring to the drawings, with specific embodiment, invention is further described in detail.
As shown in Figs. 1-2, heat exchanger includes shell 1, and the spiral heat exchange tube core 2 of three-decker is installed in shell 1.Shell 1
It is equipped with heating medium entrance 3, heating medium outlet 4, by heating fluid inlet 5 and by heated fluid outlet 6.
As viewed in figures 5-8, the rolling device of spiral heat exchange tube core includes body 7, roller bearing seat 11, main shaft speed-down servo
Motor 15, feed servo motor 16, touch control screen 12 and master controller are mounted on body 7, one end of roller 8 and drum shaft
Bearing 11 connects, and sets that there are three circular hole 8-1 on the end face of the other end.The sprocket shaft of sprocket wheel 13 is mounted on body 7 by bearing block
On, the sprocket shaft of sprocket wheel 13 is connected with chuck 13-1, and there are three circle guide post 13-2 for connection on chuck 13-1.Three round guide post 13-2
It is inserted into three circular hole 8-1 and carries out matching connection.The output shaft of main shaft speed-down servo motor 15 is connected with sprocket wheel, which passes through chain
Item 14 is connect with sprocket wheel 13.The both ends of leading screw 18 are connect by bearing block with body 7, and the output shaft of feed servo motor 16 passes through
Synchronous belt drive mechanism 17 is connect with leading screw 18, and nut seat 19 is connect with leading screw 18.
Pressure roller frame base 21 is fixedly connected with nut seat 19, and column 26 is fixedly connected with pressure roller frame base 21, flat axis
27 are fixedly connected with column 26, and the both sides of pressure roller frame 10, which are respectively equipped with, adjusts circular hole 28, and flat axis 27, which passes through, adjusts circular hole 28.Two
A cylinder 20 is mounted on pressure roller frame base 21.Pressure roller 9 is connect with the front end of pressure roller frame 10, the piston rod and pressure of cylinder 20
The rear end of roller frame 10 connects.First guide rail 22 and the second guide rail 23 are mounted side by side on body 7, and pressure roller frame base 21 passes through
Axis stretches connection there are two the first rolling bearing 24 and two the second rolling bearings 25, two the first rolling bearings 24 and two second
Rolling bearing 25 is respectively supported on the first guide rail 22 and the second guide rail 23.Two guide rails can ensure pressure roller frame 10 and pressure roller
The stability of 9 movements is conducive to improve the product quality processed.Pressure roller 9 is mounted on the front end of pressure roller frame 10, preferably pacifies
Dress mode is that pressure roller 9 is rotationally connect with the front end of pressure roller frame 10, and pressure roller 9 being capable of rotation.When pressure roller 9 coordinates roller 8 to translate
When, pressure roller 9 rotates, and can reduce resistance, be conducive to the compacting and flexural deformation of heat exchanger tube on roller 8.
As shown in figs. 12-14, the circumference of pressure roller 9 is equipped with several annular grooves 9-1, annular groove 9-1 and processing to be processed
Heat exchanger tube matching, can effectively push down heat exchanger tube, more heat exchanger tubes are stuck in corresponding annular groove.Annular groove 9-1 is preferred
For semicircle annular groove, that is to say, that the cross section of annular groove 9-1 is semicircle.
The piston rod of cylinder 20 stretches out upwards, and using lever principle, the front end band dynamic pressure roller 9 of pressure roller frame 10 is pressed downward,
The admission pressure of cylinder 20 is adjustable, completes compacting and flexural deformation of the pressure roller 9 to heat exchanger tube on roller 8；Flat axis 27 is being adjusted
It is translated in circular hole 28, adjustable pressure roller 9 forward extends out length, to adapt to the demand of different-diameter roller.
Feed servo motor 16 drives leading screw 18 to rotate by synchronous belt drive mechanism 17, and nut seat 19 moves.Spiral shell
With dynamic pressure roller frame base 21, by four rolling bearings, the left and right in two guide rails moves back and forth female seat 19.
As shown in figure 9, touch control screen 12 is connect with master controller 31, main shaft speed-down servo motor 15 passes through servo-drive
Device is connect with master controller 31.Feed servo motor 16 is connect by motor servo driver with master controller 31.Master controller
31 may be used PLC controller.
As shown in Figure 10, have in the man-machine interface of touch control screen 12 left reset button, right reset button, start button,
Stop button etc..Can be inputted in the man-machine interface of touch screen heat exchange area, heat exchanger total length, heat exchanger outer diameter, outside heat exchanger tube
The information such as diameter, heat exchange tube spacing, heat exchanger tube interlamellar spacing, heat exchanger tube radical.
Operator using the rolling device when, booting be powered after, 12 left side parameter assignment region of touch control screen into
Row data input, and the program in master controller 31 carries out calculating optimal case according to the input data, and in touch control screen
12 right side displays roll scheme prompt message (since innermost layer).Operator is according to the rolling of the corresponding outer diameter of Scheme Choice of display
Cylinder is mounted on body.It is the 1st layer that spiral, which is rolled since the roller of minimum diameter, and roller is according to the arrow meaning side in Fig. 7
To rotation, leading screw 18 is rotated according to left-hand screw mode, makes pressure roller frame base 21 as nut seat 19 is from left end as shown in FIG. 6
It is moved to right end.When rolling the 2nd layer, leading screw 18 is rotated according to right-hand screw mode, makes pressure roller frame base 21 with nut seat 19
It is moved to left end from right end as shown in FIG. 6.After the completion of 12 left side supplemental characteristic input of touch control screen, around the 1st layer when, successively
It clicks " left back to zero " --- " beginning ", carries out coiling；Roller is finished changing by the 2nd layer of diameter of cylinder prompt after end, is clicked successively
" right back to zero " --- " beginning " carries out coiling, repeats the above process, and is rolled until completing outermost layer, and without next layer of prompt
When information, terminate coiling.
Operator rolls scheme according to odd-levels such as given first layer, third layer, and the roller of corresponding outer diameter is selected to pass through
Chuck and bearing block are mounted on body, and conveying more to roller by pipe-conveying device needs the stainless steel heat exchange tube rolled, will
The more effective clamps of heat exchange are fixed on the left end (at sprocket wheel 13) of roller, 90 degree of manual bending, later point operation control pressure roller
To left end, adjustment frame extension elongation makes the annular groove of pressure roller 9 push down each heat exchanger tube and is pressed in roller centerline frame 10,
Cylinder pressure is set, start button is clicked, roller is driven by sprocket wheel to be rotated, and is coordinated the translation from left to right of pressure roller frame, is completed
The accurate of heat exchanger tube rolls, and is automatically stopped.After one layer rolls completion shutdown, roller is removed manually, by spiral helicine heat exchanger tube
It backs off.Operator rolls scheme according to the given second layer, the even levels such as the 4th layer, and the more effective clamps of heat exchange are fixed on rolling
The right end of cylinder, roller rotation coordinate the translation from right to left of pressure roller frame, completion to roll work.
As shown in figure 11, the method for coiling of spiral heat exchange tube core is as follows：
Step 1, in the total heat-transfer surface of spiral heat exchange tube core of 12 left side parameter assignment region input heat exchanger of touch control screen
Product S0, heat exchanger principal length L0, heat exchanger outer diameter D0, heat exchange caliber d, heat exchange tube spacing σ, heat exchanger tube interlamellar spacing δ.Heat exchanger tube
Diameter d refers to outer diameter.Exchange heat ligament τ=δ-d.
Step 2, i-th layer of heat exchanger tube radical N is inputted in 12 left side parameter assignment region of touch control screeni.I is since 1.
Step 3, the program in master controller 31 calculates i-th layer of helical pitch P according to following formula (1)i：
Pi=Niσ (I)
I-th layer of diameter of cylinder D is calculated according to following formula (2)i：
Di+1=Di+δ+d (2)
Define the 1st layer of diameter of cylinder D1=A.According to current rolling technology requirement, Di>=70mm, i.e., minimum roller are straight
Diameter cannot be less than 70mm, that is, A >=70mm.
Step 4, the tip lengths for defining spiral heat exchange tube core are Ld, LdTake empirical value (200mm~250mm).According to following
Formula (3), which calculates, rolls partial-length Lj：
L0=Lj+2Ld (3)
Step 5, i-th layer of heat exchanger tube the number of turns Z is calculated according to following formula (4)i, that is, main shaft rotation the number of turns.
Lj=(Zi+1)Pi (4)
After decimal point occurs in result of calculation when digit, round up.
Step 6, delay waits for.
Step 7, it judges whether there is left reset button or right reset button is pressed, if left reset button is pressed,
8 are entered step, if right reset button is pressed, enters step 9.Roll the odd-levels such as first layer, third layer or layer 5
When, operator should be by bottom left reset button.When rolling the odd-levels such as the second layer, the 4th layer or layer 6, operator should be by lower right
Reset button.
Step 8, master controller 31 controls feed servo motor 16 and rotates, and feed servo motor 16 passes through toothed belt transmission machine
Structure 17 drives leading screw 18 to rotate, and so that nut seat 19 is moved to left end in Fig. 6, leading screw 18 is back at left-handed coiling zero, pressure roller
Frame base 21 is moved to left end with nut seat 19.Subsequently into step 10.
Step 9, master controller 31 controls feed servo motor 16 and rotates, and feed servo motor 16 passes through toothed belt transmission machine
Structure 17 drives leading screw 18 to rotate, and so that nut seat 19 is moved to right end in Fig. 6, leading screw 18 is back at dextrorotation coiling zero, pressure roller
Frame base 21 is moved to right end with nut seat 19.
Step 10, main shaft back to zero process, master controller 31 control main shaft speed-down servo motor 15 and rotate, and make the chain of sprocket wheel 13
Wheel shaft returns to initial position.
Step 11,12 right side display of touch control screen needs to place the radical N of heat exchanger tubeiWith the diameter D of rolleri.Operator
By corresponding roller be mounted on roller bearing seat 11 and on the chuck 13-1 of the sprocket wheel axis connection of sprocket wheel 13, by corresponding radical
The effective clamp that exchanges heat is fixed on roller, and the annular groove of pressure roller 9 is pushed down each heat exchanger tube.
Step 12, delay waits for.
Step 13, judge whether start button is pressed, if it is, enter step 14, otherwise return to step 12.
Step 14, twin shaft cooperation winding process：15 driving drum of main shaft speed-down servo motor rotates, meanwhile, feed servo
Motor 16 drives 9 synchronizing moving of pressure roller of 10 front end of pressure roller frame.
Step 15, when pressure roller 9 moves LjApart from when, main shaft speed-down servo motor 15 and feed servo motor 16 stop turning
It is dynamic.
Step 16, coiling heat exchange area S is calculated according to following formula (5)：
In formula (5), SiIt indicates i-th layer of total heat exchange area, is calculated according to formula (6)：
M is natural number, and π is pi.
Step 17, judge whether S0Otherwise-S≤0 jumps to step 2 if it is, entering step 18, carry out next layer
Heat exchanger tube rolls.
Step 18, terminate.
The above is not intended to restrict the invention, only to the preferred embodiment of the present invention for the skill of this field
For art personnel, the invention may be variously modified and varied.
Claims (5)
1. a kind of rolling device of heat exchanger internally spiral heat-exchanging tube core, which is characterized in that watched including body, roller, main shaft deceleration
Take motor, feed servo motor, leading screw, nut seat, pressure roller frame base, pressure roller frame, column, flat axis, cylinder, pressure roller,
One guide rail, the second guide rail, touch control screen and master controller；The both ends of the roller are connect by bearing block with body, described
Main shaft speed-down servo motor is connected by one end of transmission mechanism and roller；The both ends of the leading screw are connected by bearing block and body
It connects, the output shaft of the feed servo motor is connect by transmission mechanism with leading screw, and nut seat is connect with leading screw；
The pressure roller frame base is fixedly connected with nut seat, and column is fixedly connected with pressure roller frame base, and flat axis is solid with column
The both sides of fixed connection, the pressure roller frame are respectively equipped with adjusting circular hole, and flat axis, which passes through, adjusts circular hole, the cylinder and pressure roller frame
Pedestal connects, and the pressure roller is connect with the front end of pressure roller frame, and the piston rod of the cylinder is connect with the rear end of pressure roller frame；The
One guide rail and the second guide rail are connected on body side by side, and pressure roller frame base is stretched by axis is connected with the first rolling bearing and second
Rolling bearing, the first rolling bearing and the second rolling bearing are respectively supported on the first guide rail and the second guide rail；The circumference of pressure roller
It is equipped with annular groove；
The touch control screen with and master controller connect, the main shaft speed-down servo motor and feed servo motor respectively with master
Controller connects.
2. the rolling device of heat exchanger internally spiral heat-exchanging tube core according to claim 1, which is characterized in that the main shaft subtracts
Transmission mechanism between fast servo motor and roller includes chain, chuck and two sprocket wheels, and chain is connected between two sprocket wheels,
The output axis connection of one of sprocket wheel and main shaft speed-down servo motor；The sprocket shaft of another sprocket wheel passes through bearing block and body
Connection, chuck and the sprocket wheel axis connection；The end face of one end of roller is equipped with circular hole, and round guide post, circle guide post are connected on chuck
It is inserted into circular hole, the output shaft of feed servo motor is connect by synchronous belt drive mechanism with leading screw.
3. the rolling device of heat exchanger internally spiral heat-exchanging tube core according to claim 1 or 2, which is characterized in that the ring
Shape slot is semicircle annular groove.
4. the rolling device of heat exchanger internally spiral heat-exchanging tube core according to claim 1 or 2, which is characterized in that the master
Controller is PLC controller.
5. the rolling device of heat exchanger internally spiral heat-exchanging tube core according to claim 1 or 2, which is characterized in that the pressure
The front end of roller and pressure roller frame is rotatablely connected.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017103482207 | 2017-05-17 | ||
| CN201710348220.7A CN107020334A (en) | 2017-05-17 | 2017-05-17 | The rolling device and method of heat exchanger internally spiral heat-exchanging tube core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108620508A true CN108620508A (en) | 2018-10-09 |
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ID=59528777
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710348220.7A Pending CN107020334A (en) | 2017-05-17 | 2017-05-17 | The rolling device and method of heat exchanger internally spiral heat-exchanging tube core |
| CN201810466189.1A Pending CN108620508A (en) | 2017-05-17 | 2018-05-16 | The rolling device of heat exchanger internally spiral heat-exchanging tube core |
| CN201810466188.7A Active CN108746402B (en) | 2017-05-17 | 2018-05-16 | Rolling method of spiral heat exchange tube core in heat exchanger |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201710348220.7A Pending CN107020334A (en) | 2017-05-17 | 2017-05-17 | The rolling device and method of heat exchanger internally spiral heat-exchanging tube core |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810466188.7A Active CN108746402B (en) | 2017-05-17 | 2018-05-16 | Rolling method of spiral heat exchange tube core in heat exchanger |
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| CN (3) | CN107020334A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113231492A (en) * | 2021-07-08 | 2021-08-10 | 南通市力行机械制造有限公司 | Straightening device for production and processing of weight lifting rod |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107020334A (en) * | 2017-05-17 | 2017-08-08 | 威海职业学院 | The rolling device and method of heat exchanger internally spiral heat-exchanging tube core |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0623454A (en) * | 1992-07-09 | 1994-02-01 | Hitachi Ltd | Manufacture of hampson type heat exchanger |
| KR101070752B1 (en) * | 2010-10-25 | 2011-10-07 | 원종암 | Spiral pipe manufacturing device for heat-exchange |
| CN202114115U (en) * | 2011-06-18 | 2012-01-18 | 无锡市华尔泰机械制造有限公司 | Fixture for circular pipe-coiled pipe |
| CN102380530A (en) * | 2011-11-28 | 2012-03-21 | 江苏东方四通科技股份有限公司 | Processing device for helix tube |
| CN102581094A (en) * | 2012-02-27 | 2012-07-18 | 江苏勇龙电气有限公司 | Pipe bender and forming method for manufacturing round pipe by using pipe bender |
| CN104043707A (en) * | 2014-06-17 | 2014-09-17 | 南通鸿景天机械设备科技有限公司 | Metal pipe spiral rotary bending machine |
| CN104259279B (en) * | 2014-08-06 | 2016-01-06 | 江苏天舒电器有限公司 | A kind of manufacture method of votator coil pipe and production equipment |
| CN205056737U (en) * | 2015-09-24 | 2016-03-02 | 顾耿豪 | Spiral pipe pitch adjustment mechanism of bending machine |
| CN107020334A (en) * | 2017-05-17 | 2017-08-08 | 威海职业学院 | The rolling device and method of heat exchanger internally spiral heat-exchanging tube core |
-
2017
- 2017-05-17 CN CN201710348220.7A patent/CN107020334A/en active Pending
-
2018
- 2018-05-16 CN CN201810466189.1A patent/CN108620508A/en active Pending
- 2018-05-16 CN CN201810466188.7A patent/CN108746402B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113231492A (en) * | 2021-07-08 | 2021-08-10 | 南通市力行机械制造有限公司 | Straightening device for production and processing of weight lifting rod |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107020334A (en) | 2017-08-08 |
| CN108746402B (en) | 2023-08-01 |
| CN108746402A (en) | 2018-11-06 |
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Application publication date: 20181009 |
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| RJ01 | Rejection of invention patent application after publication |