CN103170550A - Connection method for copper coils for continuously unwinding bare packets - Google Patents
Connection method for copper coils for continuously unwinding bare packets Download PDFInfo
- Publication number
- CN103170550A CN103170550A CN2013101226871A CN201310122687A CN103170550A CN 103170550 A CN103170550 A CN 103170550A CN 2013101226871 A CN2013101226871 A CN 2013101226871A CN 201310122687 A CN201310122687 A CN 201310122687A CN 103170550 A CN103170550 A CN 103170550A
- Authority
- CN
- China
- Prior art keywords
- pan tube
- bronze pan
- groove
- nude enamelled
- tube
- 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 claims abstract description 35
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title abstract description 13
- 239000010949 copper Substances 0.000 title abstract description 13
- 229910052802 copper Inorganic materials 0.000 title abstract description 13
- 238000005452 bending Methods 0.000 claims abstract description 26
- 229910000906 Bronze Inorganic materials 0.000 claims description 96
- 239000010974 bronze Substances 0.000 claims description 96
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 96
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 230000002045 lasting effect Effects 0.000 claims description 9
- 238000004378 air conditioning Methods 0.000 claims description 4
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 5
- 230000003111 delayed effect Effects 0.000 abstract 1
- 239000002699 waste material Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
Images
Abstract
The invention introduces a connection method for copper coils for continuously unwinding bare packets. The connection method comprises the following steps of: (1) unwinding and threading the copper coils; (2) straightening the copper coils; (3) threading core heads; (4) continuously unwinding the bare packets, wherein after a tube-bending machine is started, the end head of a copper coil at the heat part of a second bare packet is placed in a necking device during the working of the tube-bending machine, the necking device is closed to compress the end head of the copper coil, and then the compressed end head of the copper coil on the second bare packet is inserted into and connected with a copper coil at the tail part of a first bare packet; and (5) blanking the copper coils bent by the tube-bending machine, thus obtaining tubes with needed length. With the adoption of the method disclosed by the invention, machine halt for material change during unwinding of the bare packets is avoided, the time delayed by the working procedures of material change, threading and the like is shortened, and production efficiency is improved; and simultaneously, scraps are reduced, the consumption of other accessories is avoided, and process difficulty is reduced.
Description
Technical field
The present invention relates to the manufacture craft of air-conditioning equipment, the bronze pan tube method of attachment of the nude enamelled lasting unwrapping wire of especially a kind of confession belongs to the plant equipment manufacturing process technology field.
Background technology
In the production process of air-conditioning equipment, usually be all to adopt bronze pan tube to make the parts such as evaporimeter and condenser, when making, the bronze pan tube that needs first will roll up greatly is cut into respectively standard compliant segment, and then bends condenser or the evaporimeter of the standard of being assembled into.In cutting out the process of bronze pan tube, need first the bronze pan tube termination in will be nude enamelled to be connected on the payingoff mechanism of correspondence, payingoff mechanism pulls one section bronze pan tube according to the standard of setting from nude enamelled, after the guide pipe aligning of bronze pan tube in payingoff mechanism, bent by bending machine and be cut into again standard compliant tubing, the whole process of Here it is nude enamelled unwrapping wire.But; in the process of nude enamelled unwrapping wire; when each is nude enamelled will be finished the time; usually all can there be the problem of remaining rear bronze pan tube curtailment; to this, existing present way is directly remaining bronze pan tube to be abandoned, and connects a new volume nude enamelled on payingoff mechanism again; but a new volume is nude enamelled usually to be had at the position, termination and is bent or the situation such as crushing, could again start shooting after therefore also needing new nude enamelled termination bending part is cut off one section.Can find out, in existing present production procedure, all there are the raw-material situation of waste in nude enamelled rear and head section, can cause like this waste material to increase, particularly in today that the cost of raw material goes up day by day, this can increase the burden of enterprise to a certain extent; And more renew nude enamelled the time, must first shut down just and can reconnect bronze pan tube, just need to allow equipment downtime once and one of every replacing is nude enamelled, but also will connect manually bronze pan tube, delay so very much, also reduced production efficiency.
Summary of the invention
For above-mentioned deficiency of the prior art; main purpose of the present invention be to introduce a kind of be used for connecting when nude enamelled unwrapping wire different nude enamelled on the method for air-conditioning bronze pan tube; need not shut down when unwrapping wire after employing the method and reload, when having improved production efficiency, also reduce the generation of waste material.
Technical scheme of the present invention is: the bronze pan tube method of attachment of the nude enamelled lasting unwrapping wire of a kind of confession, and its step is as follows:
1) with bronze pan tube unwrapping wire poling: the bronze pan tube of first nude enamelled head is penetrated in the guide pipe of payingoff mechanism;
2) bronze pan tube is aligned: from the other end of guide pipe, bronze pan tube is pulled out, and make bronze pan tube be drawn into rectilinear form in guide pipe;
3) punching head: will penetrate in bending machine through the bronze pan tube after the guide pipe aligning, and the termination of bronze pan tube is connected with bending machine;
4) nude enamelled continuous unwrapping wire: start bending machine, in bending machine work, the bronze pan tube termination of second nude enamelled head is put in reduced mouth part, closed reduced mouth part is the termination compression of this section bronze pan tube, then second nude enamelled bronze pan tube termination after compressed is inserted in the bronze pan tube of first nude enamelled afterbody and connects;
5) will through the bronze pan tube blanking after the bending machine bending, make the tubing of required length.
Described reduced mouth part is to be made of the first fixture block that cooperatively interacts and the second fixture block, is provided with the first groove on described the first fixture block, is provided with the protruding tooth that is complementary with the first groove on described the second fixture block, and the width of described protruding tooth is less than the width of the first groove.
Optimally, second nude enamelled compressed bronze pan tube termination length be 20 ~ 50mm.
Optimally, described the first groove is circular arc, also is provided with the second groove on protruding tooth, is formed for the passage of clamping bronze pan tube after described the second groove and the first groove combination; Described the second groove is also circular arc.
Optimally, described second nude enamelled compressed bronze pan tube termination and first nude enamelled afterbody bronze pan tube is connected to interference fit.
Optimally, the diameter in described the second groove cross section is less than the diameter in the first groove cross section; The length of described the second groove and the first groove equal in length.
The present invention has following beneficial effect:
1, avoided shutting down when unwrapping wire and reload: the present invention can be under non-stop-machine state; the different nude enamelled bronze pan tubes of two volumes are directly coupled together by reduced mouth part; just can make the pay-off equipment continuous firing like this in the process of unwrapping wire; reduced because of reload, time of the operation such as threading delay, improved production efficiency.
Therefore 2, reduced the generation of waste material: due to head, the portion that need not cut out bronze pan tube in whole connection procedure, do not have waste material to produce, with respect to former operation economical with materials more, reduced the wasting of resources like this.
3, do not need to consume other auxiliary member, be conducive to reduce production costs, simplified operation simultaneously yet, reduced technology difficulty.
4, method of operating is easy, and instrument is portable, simple, and the reducing method of attachment has multiple choices.
Description of drawings
Fig. 1 is the device structure schematic diagram that uses in bronze pan tube method of attachment of the present invention;
Fig. 2 is the structural representation of the reduced mouth part that uses in the inventive method.
In figure, 1-first is nude enamelled, 2-payingoff mechanism, and 3-guide pipe, 4-bending machine, 5-the second is nude enamelled, 6-reduced mouth part, the 61-the first fixture block, the 62-the second fixture block, the 63-the first groove, 64-protruding tooth, the 65-the second groove.
The specific embodiment
The present invention is further illustrated below in conjunction with the drawings and specific embodiments:
As depicted in figs. 1 and 2, the bronze pan tube method of attachment of the nude enamelled lasting unwrapping wire of a kind of confession, it is in the process of nude enamelled unwrapping wire, under non-stop-machine state, with two nude enamelled coupling together, reaches the purpose that continues unwrapping wire, its step is as follows:
1) with bronze pan tube unwrapping wire poling: the bronze pan tube of first nude enamelled 1 head is penetrated in the guide pipe 3 of payingoff mechanism 2; Here the internal diameter of guide pipe 3 is greater than the diameter of bronze pan tube.
2) bronze pan tube is aligned: from the other end of guide pipe 3, bronze pan tube is pulled out, because the middle part of guide pipe 3 is one section rectilinear form, make like this bronze pan tube be drawn into rectilinear form from original curved shape in guide pipe 3, thereby facilitate the process operations of back.
3) punching head: will penetrate in bending machine 4 through the bronze pan tube after guide pipe 3 alignings, and the termination of bronze pan tube is connected with bending machine 4; The bending machine 4 here is existing equipment, and its effect is the bronze pan tube bending, with convenient follow-up cutting out.
4) nude enamelled continuous unwrapping wire: start bending machine 4, in bending machine 4 work, the bronze pan tube termination of second nude enamelled 5 head is put in reduced mouth part 6, closed reduced mouth part 6 is the termination compression of this section bronze pan tube, then the bronze pan tube termination after compressed on second nude enamelled 5 is inserted in the bronze pan tube of first nude enamelled 1 afterbody and connects.In the present invention, described reduced mouth part 6 is to be made of the first fixture block 61 that cooperatively interacts and the second fixture block 62, and described the first fixture block 61 and the second fixture block 62 are the clamping shape and coordinate, and its chucking power of using is external force.When placing, the first fixture block 61 and the second fixture block 62 can go to upper and lower clamping, also can be the form of left and right combination.Be provided with the first groove 63, the first grooves 63 and distribute and equal in length with the first fixture block 61 along the length direction of the first fixture block 61 on described the first fixture block 61, its purpose is can all form opening at the two ends of the first fixture block 61 like this.Be provided with the protruding tooth 64 that is complementary with the first groove 63 on described the second fixture block 62, described protruding tooth 64 and the first groove 63 over against, protruding tooth 64 distributes along the length direction of the second fixture block 62, convenient in order to operate, here the Design of length with protruding tooth 64 is identical with the length of the first groove 63, and this is preferred plan.In the present invention, the width requirement of described protruding tooth 64 is less than the width of the first groove 63, and protruding like this tooth 64 just can be pressed in the first groove 63, when the clamping bronze pan tube, by protruding tooth 64 is pressed in the first groove 63, bronze pan tube is compressed exactly.Need to prove, can adopt and to be inserted in the bronze pan tube of first nude enamelled afterbody after the compression of the bronze pan tube of second nude enamelled head portion, be inserted in the bronze pan tube of second nude enamelled head after also can adopting the bronze pan tube compression with first nude enamelled afterbody.
Referring to Fig. 2, in the present invention, described the first groove 63 is designed to circular arc, simultaneously, also be provided with the second groove 65 on protruding tooth 64, described the second groove 65 is also circular arc.The diameter in described the second groove 65 cross sections is less than the diameter in the first groove 63 cross sections.Be formed for the passage of clamping bronze pan tube after described the second groove 65 and the first groove 63 combinations.Here pass through the effect of two circular grooves, can form a circular channel when making compression between two fixture blocks, the shape of this passage and the shape of bronze pan tube are basic identical, therefore, when compression, just the caliber with bronze pan tube dwindles, and the situation of bronze pan tube breakage can not occur, and is conducive to like this ensure the integrality of tubing.Simultaneously, according to demand, can select the second groove 65 is designed to different width, so just can control the bronze pan tube nozzle diameter size after compression.Further, for more convenient to operate, can be identical with the Design of length of the first groove 63 with the length of described the second groove 65, so just can be all reduced so that put into whole section bronze pan tube of groove in when compression, during handled easily to the control of pipe length.
With reduced mouth part compression bronze pan tube the time, compressed bronze pan tube termination length can be 20mm, 25mm, 28mm, 30mm, 35mm, 42mm, 45mm, 48mm or 50mm etc. on second nude enamelled 5.After the bronze pan tube reducing, compressed bronze pan tube termination can be connected and fixed for interference fit with being connected of first nude enamelled 1 afterbody bronze pan tube on second nude enamelled 5.Certainly, also can take other to be connected and fixed mode, as flange connection etc.
5) will through the bronze pan tube blanking after bending machine 4 bendings, make the tubing of required length.
In traditional process, nearly 5 ~ the 10m(that at every turn reloads looks the status of equipment difference) the bronze pan tube stub bar scraps, and after adopting method of the present invention, the learies of bronze pan tube can reduce to length (the bend pipe process product of a U-shaped pipe, usually less than 1m), only need to have discarded the getting final product of a U-shaped pipe of joint, therefore reduced the waste of material.Simultaneously, in traditional method, after every rosette copper coil pipe uses, need to shut down and change another rosette copper coil pipe, re-execute the operation of poling.And after adopting method of the present invention, can carry out current nude enamelled bronze pan tube and next nude enamelled bronze pan tube joint work end to end in every rosette copper coil pipe unspent off time, thereby avoid reloading shutdown.Consider the flatness problem after forward and backward two rosette copper coil pipes connect, because after reducing, the state of bronze pan tube own is softer, there is certain distortion, bronze pan tube after reducing is directly inserted the nude enamelled material tail of a upper dish (perhaps expect that tail reducing insert next and coil nude enamelled bronze pan tube stub bar), have interference fit due to after inserting, there is frictional force in bronze pan tube between end to end, through verification experimental verification, this frictional force size is enough born the poling pulling force, can realize the poling operation.Method of the present invention is not required to be each nude enamelled bronze pan tube and makes jointing, therefore there is no the consumption of joint annex, and special instrument also can use for a long time simultaneously, and is not fragile, so also is conducive to reduce production costs.
Need to prove at last, above embodiment is only in order to illustrate technical scheme of the present invention but not the restriction technologies scheme, although the applicant has been described in detail the present invention with reference to preferred embodiment, those skilled in the art is to be understood that, those are modified or are equal to replacement technical scheme of the present invention, and do not break away from aim and the scope of the technical program, all should be encompassed in the middle of claim scope of the present invention.
Claims (6)
1. the bronze pan tube method of attachment of the nude enamelled lasting unwrapping wire of confession, its step is as follows:
1) with bronze pan tube unwrapping wire poling: the bronze pan tube of first nude enamelled (1) head is penetrated in the guide pipe (3) of payingoff mechanism (2);
2) bronze pan tube is aligned: from the other end of guide pipe (3), bronze pan tube is pulled out, and make bronze pan tube be drawn into rectilinear form in guide pipe (3);
3) punching head: will penetrate in bending machine (4) through the bronze pan tube after guide pipe (3) aligning, and the termination of bronze pan tube is connected with bending machine (4);
4) nude enamelled continuous unwrapping wire: start bending machine (4), in bending machine (4) work, the bronze pan tube termination of second nude enamelled (5) head is put in reduced mouth part (6), closed reduced mouth part (6) is the termination compression of this section bronze pan tube, then second nude enamelled (5) upper bronze pan tube termination after compressed is inserted in the bronze pan tube of first nude enamelled (1) afterbody and connects;
5) will through the bronze pan tube blanking after bending machine (4) bending, make the tubing of required length.
2. the method for connecting the air-conditioning bronze pan tube according to claim 1, it is characterized in that, described reduced mouth part (6) is to be made of the first fixture block (61) that cooperatively interacts and the second fixture block (62), be provided with the first groove (63) on described the first fixture block (61), be provided with the protruding tooth (64) that is complementary with the first groove (63) on described the second fixture block (62), the width of described protruding tooth (64) is less than the width of the first groove (63).
3. the bronze pan tube method of attachment of the nude enamelled lasting unwrapping wire of confession according to claim 1, is characterized in that, compressed bronze pan tube termination length is 20 ~ 50mm on second nude enamelled (5).
4. the bronze pan tube method of attachment of the nude enamelled lasting unwrapping wire of confession according to claim 2, it is characterized in that, described the first groove (63) is circular arc, also be provided with the second groove (65) on protruding tooth (64), be formed for the passage of clamping bronze pan tube after described the second groove (65) makes up with the first groove (63); Described the second groove (65) is also circular arc.
5. the bronze pan tube method of attachment of the nude enamelled lasting unwrapping wire of confession according to claim 3, is characterized in that, described second nude enamelled (5) go up the interference fit that is connected to of compressed bronze pan tube termination and first nude enamelled (1) afterbody bronze pan tube.
6. the bronze pan tube method of attachment of the nude enamelled lasting unwrapping wire of confession according to claim 4, is characterized in that, the diameter in described the second groove (65) cross section is less than the diameter in the first groove (63) cross section; The length of described the second groove (65) and the first groove (63) equal in length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310122687.1A CN103170550B (en) | 2013-04-10 | 2013-04-10 | Connection method for copper coils for continuously unwinding bare packets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310122687.1A CN103170550B (en) | 2013-04-10 | 2013-04-10 | Connection method for copper coils for continuously unwinding bare packets |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103170550A true CN103170550A (en) | 2013-06-26 |
| CN103170550B CN103170550B (en) | 2015-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310122687.1A Active CN103170550B (en) | 2013-04-10 | 2013-04-10 | Connection method for copper coils for continuously unwinding bare packets |
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| Country | Link |
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| CN (1) | CN103170550B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4383429A (en) * | 1980-04-16 | 1983-05-17 | La Metalli Industriale S.P.A. | Apparatus for forming a point at the end of a metal tube by means of a drawing operation |
| US6026555A (en) * | 1997-05-15 | 2000-02-22 | Form Rite | Coated tube and fitting assembly |
| CN1349864A (en) * | 2001-12-19 | 2002-05-22 | 北京中铁建协技术开发有限公司 | Continuous torsion-less drawing process of producing steel wire with spiral rib |
| CN2870441Y (en) * | 2006-01-25 | 2007-02-21 | 徐林 | Movable vegetable greenhouse frame with series inserted-tube assembly |
| CN101077548A (en) * | 2006-05-25 | 2007-11-28 | 珠海格力电器股份有限公司 | Copper aluminum composite pipeline, processing equipment and its processing method |
| CN201361636Y (en) * | 2009-07-13 | 2009-12-16 | 河南通达电缆股份有限公司 | Wire playoff stand |
| CN201543719U (en) * | 2009-12-01 | 2010-08-11 | 无锡市新峰管业有限公司 | Hot-press forming mold for thick-wall elbow pipe fitting with straight pipe section |
| CN101923925A (en) * | 2009-06-15 | 2010-12-22 | 王浩东 | Cable copper tube winder |
| CN201801234U (en) * | 2010-12-31 | 2011-04-20 | 凡登（常州）新型金属材料技术有限公司 | System for automatically alternating shift of line laying in producing steel wire copper plating |
| CN102829253A (en) * | 2011-06-18 | 2012-12-19 | 江苏信成电器总厂 | Reducing integrated connecting pipe |
-
2013
- 2013-04-10 CN CN201310122687.1A patent/CN103170550B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4383429A (en) * | 1980-04-16 | 1983-05-17 | La Metalli Industriale S.P.A. | Apparatus for forming a point at the end of a metal tube by means of a drawing operation |
| US6026555A (en) * | 1997-05-15 | 2000-02-22 | Form Rite | Coated tube and fitting assembly |
| CN1349864A (en) * | 2001-12-19 | 2002-05-22 | 北京中铁建协技术开发有限公司 | Continuous torsion-less drawing process of producing steel wire with spiral rib |
| CN2870441Y (en) * | 2006-01-25 | 2007-02-21 | 徐林 | Movable vegetable greenhouse frame with series inserted-tube assembly |
| CN101077548A (en) * | 2006-05-25 | 2007-11-28 | 珠海格力电器股份有限公司 | Copper aluminum composite pipeline, processing equipment and its processing method |
| CN101923925A (en) * | 2009-06-15 | 2010-12-22 | 王浩东 | Cable copper tube winder |
| CN201361636Y (en) * | 2009-07-13 | 2009-12-16 | 河南通达电缆股份有限公司 | Wire playoff stand |
| CN201543719U (en) * | 2009-12-01 | 2010-08-11 | 无锡市新峰管业有限公司 | Hot-press forming mold for thick-wall elbow pipe fitting with straight pipe section |
| CN201801234U (en) * | 2010-12-31 | 2011-04-20 | 凡登（常州）新型金属材料技术有限公司 | System for automatically alternating shift of line laying in producing steel wire copper plating |
| CN102829253A (en) * | 2011-06-18 | 2012-12-19 | 江苏信成电器总厂 | Reducing integrated connecting pipe |
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| Publication number | Publication date |
|---|---|
| CN103170550B (en) | 2015-04-15 |
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Denomination of invention: Connection method for copper coils for continuously unwinding bare packets Effective date of registration: 20171215 Granted publication date: 20150415 Pledgee: Zhengzhou Branch of China Minsheng Bank Co.,Ltd. Pledgor: WUXI GOLDEN DRAGON KAWAMURA PRECISION TUBE Co.,Ltd.|CHONGQING LONGYU PRECISE COPPER TUBE Co.,Ltd.|HENAN LONGHUI COPPER INDUSTRY Co.,Ltd.|Xinxiang Jinxiang Precision Pipe Fittings Co.,Ltd.|XINXIANG LONGTENG REFRIGERATION HIGH-TECH CO.,LTD.|JIANGSU CANGHUAN COPPER PRODUCTS CO.,LTD.|GOLDEN DRAGON PRECISE COPPER TUBE Group Inc.|GUANGDONG LONGFENG PRECISION COPPER PIPE CO.,LTD. Registration number: 2017990001045 |
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Effective date of registration: 20181115 Address after: 404100 Chongqing Wanzhou Economic and Technological Development Zone Peak Park (Wanzhou Jingkai District) Patentee after: Chongqing Pinghu Jinlong Precision Copper Pipe Co.,Ltd. Address before: 402247 No. 88 Shuangfu Avenue, Shuangfu Industrial Park, Jiangjin District, Chongqing Patentee before: CHONGQING LONGYU PRECISE COPPER TUBE Co.,Ltd. |
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Date of cancellation: 20190814 Granted publication date: 20150415 Pledgee: Zhengzhou Branch of China Minsheng Bank Co.,Ltd. Pledgor: GOLDEN DRAGON PRECISE COPPER TUBE Group Inc.|Guangdong Longfeng Precision Copper Pipe Co., Ltd., Jiangsu canghuan Copper Industry Co., Ltd., Wuxi jinlongchuan village precision Pipe Co., Ltd., Chongqing Longyu Precision Copper Pipe Co., Ltd., Henan longhui Copper Co., Ltd., Xinxiang Jinxiang precision pipe fittings Co., Ltd., Xinxiang Longteng refrigeration High Technology Co.,Ltd. Registration number: 2017990001045 |
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Denomination of invention: Connection method for copper coils for continuously unwinding bare packets Effective date of registration: 20190822 Granted publication date: 20150415 Pledgee: Zhengzhou Branch of China Minsheng Bank Co.,Ltd. Pledgor: Chongqing Pinghu Jinlong Precision Copper Pipe Co.,Ltd. Registration number: Y2019990000124 |
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Date of cancellation: 20220729 Granted publication date: 20150415 Pledgee: Zhengzhou Branch of China Minsheng Bank Co.,Ltd. Pledgor: Chongqing Pinghu Jinlong Precision Copper Pipe Co.,Ltd. Registration number: Y2019990000124 |
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