CN103769722A - Spiral-plate heat exchanger welding machine - Google Patents
Spiral-plate heat exchanger welding machine Download PDFInfo
- Publication number
- CN103769722A CN103769722A CN201310719393.7A CN201310719393A CN103769722A CN 103769722 A CN103769722 A CN 103769722A CN 201310719393 A CN201310719393 A CN 201310719393A CN 103769722 A CN103769722 A CN 103769722A
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- Prior art keywords
- heat exchanger
- welding
- welding gun
- fixed
- spiral
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/02—Carriages for supporting the welding or cutting element
- B23K37/0252—Steering means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/133—Means for feeding electrodes, e.g. drums, rolls, motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/14—Heat exchangers
Abstract
The invention discloses a spiral-plate heat exchanger welding machine is a very suitable machine for machining spiral-plate heat exchangers. According to the adopted technical measures, the spiral-plate heat exchanger welding machine comprises a rack, a rotary disk is arranged on the rack, and a welding gun is arranged on the outer side of the rotary disk. The spiral-plate heat exchanger welding machine is characterized in that a transverse beam is connected to a stand column in the horizontal direction, the welding gun is connected to a clamping mechanism, the clamping mechanism is connected with a pushing mechanism arranged on the transverse beam, a probe used for detecting the position of a spiral plate is arranged in the position of the welding gun, the probe is connected with the pushing mechanism through a controller and used for controlling work of the pushing mechanism, and the welding gun moves in the length direction of the transverse beam under the action of the pushing mechanism; the controller is further used for controlling the rotation speed of the rotary disk after receiving signals of the probe; an automatic wire feeder is used for automatically delivering welding wires to the welding gun. The welding machine is high in operation speed and very suitable for welding integral heat exchange plates.
Description
Technical field
The present invention relates to a kind of welding machine, relate in particular to a kind of welding machine for spiral heat exchanger is welded.
Background technology
Conventionally need to be applied to heat exchanger at medicine, chemical field, carry out heat exchange to utilize between fluid media (medium) and material, reach material is heated or cooling object.Spiral heat exchanger is as a kind of heat exchanger, apply comparatively extensive, it plays the heat exchanger plates on substrate that is arranged on of main heat exchange effect, heat exchanger plates is spiral setting, the heat exchanger plates of spiral setting is separated into two independently curved cavitys substrate, in these two cavitys, flow into respectively material and heat exchange medium, flow through in the process of these two cavitys at material and heat exchange medium, material and heat exchange medium obtain lasting heat exchange.Because material and heat exchange medium need to flow in heat exchanger, to consider based on mobile smoothness, it is relatively high that the moving towards of exchange hot plate requires.
Chinese invention patent application (application number: disclose a kind of spiral heat exchanger 201310081310.6), belonged to energy consumption conversion equipment.Comprise some block plates, some block plates are mutually stacked together and roll into cylindrical shape, between every layer of steel plate, arrange spacing column.Spiral heat exchanger heat transfer flow channel provided by the invention is long, and runner spacing is large, and heat resisting temperature is high.This heat exchanger structure compactness, area occupied is little, and heat exchange efficiency is high, and after heat exchange, the temperature of cold medium approaches the temperature of thermal medium.
Heat exchange steel plate in this spiral heat exchanger is by the polylith moulding by the mode of welding that is stacked together, because the chemical characteristic of material is relatively complicated, weld seam on heat exchanger plates too much can be because penetration phenomenon appears in the corrosiveness of material, and this polylith heat exchange steel plate stacks and welds together, adding the comparatively trouble that also seems man-hour, working (machining) efficiency is relatively low.
Summary of the invention
For overcoming above-mentioned defect, the technical issues that need to address of the present invention: a kind of spiral heat exchanger welding machine is provided, and the operating efficiency of this welding machine is relatively high, can adapt to the requirement that in heat exchanger, all-in-one-piece heat exchanger plates is processed.
For solveing the technical problem, technical scheme of the present invention: a kind of spiral heat exchanger welding machine, comprise frame, in frame, be provided with rotating disk, be provided with welding gun in rotating disk outside, it is characterized in that, crossbeam along continuous straight runs is connected on column, welding gun is connected on clamping device, pushing mechanism set on clamping device and crossbeam is connected, be provided with the probe for the position of spiral plate is surveyed in the position of welding gun, probe is connected with pushing mechanism by controller for controlling the work of pushing mechanism, under the effect of pushing mechanism, welding gun moves along the length direction of crossbeam, controller is also being accepted after probe signals for controlling the rotating speed of rotating disk, automatic wire feeding mechanism is used for to welding gun automatic transport welding wire.Because spiral-plate heat exchanger weld seam is spiral nonlinear loci, linear velocity constant in the time guaranteeing welding gun in spiral plate track any point, must adjust at any time bottom rotary speed and welding gun along the translational speed on crossbeam and wire feed and welding current variation, the combination of variation at any time of its four parameters is reasonable, guarantee weldquality.Probe is equivalent to position sensor, and probe carries out perception to the position of spiral plate in the horizontal direction, in rotating disk footpath upwards, probe perceives after the distance parameter of spiral plate, after this parameter is accepted by controller, the work of controller instruction pushing mechanism, and welding gun and probe are moved upward in crossbeam side.Week of rotating disk upwards, probe perceives after the distance parameter of spiral plate, by controller instruction for driving the driving mechanism work of dial rotation.Probe carries out after perception the position of spiral plate, and object is to make the distance between bottom and spiral plate and the substrate intersection location of welding gun upper in welding distance, and along with the carrying out of weld job, and make welding gun do relative motion along the track of spiral plate.Carrying out before weld job, first substrate is fixed on rotating disk, on substrate, be in place being vertical all-in-one-piece heat exchanger plates, heat exchanger plates, by the moulding of prebending, then utilizes the position of probe exchange hot plate to carry out detection, and probe makes pushing mechanism drive welding gun to move for pushing mechanism provides signal, in welding, rotating disk rotates under the effect of drive motors, thereby makes welding gun adapt to the spiral trend of heat exchanger plates, completes weld job.
As preferably, described pushing mechanism comprises swivel nut, and swivel nut is threaded on screw rod, and screw rod is connected with servomotor, and clamping device is connected on swivel nut; Described controller is for controlling the rotation of servomotor.Between servomotor and probe, be provided with controller, drive bolt rotary by probe for controller provides the rotation that signal makes controller control servomotor, and then reach the object that welding gun is advanced on crossbeam.The screw rod being threaded connection and swivel nut be as transmission mechanism, simple in structure, compact, functional reliability and good stability.
As preferably, clamping device comprises the cross bar being fixed on swivel nut, and cross bar parallels with crossbeam, and welding gun is fixed on cross bar.By described cross bar is set, facilitate being connected and fixed of Butt welding gun.
As preferably, crossbeam is hollow structure, and described screw rod and swivel nut are all arranged in crossbeam, are fixed with coupling block on swivel nut, and described cross bar is fixed on coupling block; Servomotor is fixed on the end of crossbeam.This structure setting, makes the structural compactness of this welding machine entirety good.
As preferably, be fixed with coupling bar in the end of cross bar, welding gun is fixed on the inner end of coupling bar, and the outer end of coupling bar is fixed with baffle plate, and baffle plate and welding gun be vertically upper setting all.Be provided with described baffle plate, this baffle plate of one side can be exchanged hot plate and press solidly, and this baffle plate also can effectively stop the splash that welding gun produces in the time of welding on the other hand.
As preferably, on described crossbeam, be fixed with sleeve, sleeve is socketed on column with gap, is fixed with supporting mass on column, and supporting mass is for stop sleeve; On sleeve, be provided with the spanner that runs through its wall body, spanner is used for making sleeve to be circumferentially fixed on column.Pull spanner, can change the cooperate degree between sleeve and column, convenient crossbeam is pulled, so that welding gun is positioned at the top of rotating disk or welding gun is moved away to the outside of rotating disk.Utilize the height of supporting mass on column, and make welding gun on suitable height by sleeve being bearing on supporting mass.
As preferably, the structure of described wire feeder comprises the reel for the welding wire of reeling, and is provided with a pair of clip wheel for clamping, drive welding wire between reel and welding gun.In the course of the work, welding wire is between two clip wheels, and one of them clip wheel and motor are connected, and by the rolling of clip wheel, welding wire is delivered to the position of welding gun, to supply with continuously welding wire for welding gun.
As preferably, described clip wheel is arranged on riser, is provided with support wheel on riser, and support wheel is between clip wheel and reel, and support wheel is three, and these three support wheels are triangularly arranged.By described riser is set, the convenient setting to clip wheel and support wheel, by support wheel is set, thereby for welding wire provides stable supporting role, facilitates Butt welding gun to carry out self-feeding.
As preferably, between welding gun and clip wheel, be provided with the conduit for cross-under welding wire, one end of conduit is connected with welding gun, and the other end is fixed on riser by joint.Be provided with conduit, facilitate moving ahead of the welding wire of cross-under in conduit, the stability while having guaranteed welding gun work.
As preferably, described frame is triangular in shape, and three bights of frame protrude into the outside of rotating disk, and described column is arranged on a bight of frame.The good stability of leg-of-mutton frame itself, and facilitate the setting of column, the structural compactness of entirety is good.
Therefore, beneficial effect of the present invention: the welding torch position place in this spiral heat exchanger welding machine is provided with the probe of surveying for the position of the heat exchanger plates to spiral trend, control welding gun along the displacement on crossbeam by probe, coordinate the rotation of driven by rotary disc heat exchanger plates, make this welding machine can adapt to well the requirement that the heat exchanger plates of spiral trend is welded.This welding machine can be applicable to all-in-one-piece heat exchanger plates to carry out rapid welding well, weld seam is formed between heat exchanger plates and substrate, the heat-transfer surface place of heat exchanger plates can not form solder joint or weld seam, even if there is the corrosion phenomenon at welding position place, also be difficult for causing communicating between two cavitys in heat exchanger, thereby be difficult for therefore causing interpenetrating between two kinds of fluids, can effectively avoid the pollution to material.This welding machine can be realized the welding of exchange hot plate continuously once, speed of welding can guarantee, this exchanges the deformation quantity that hot plate causes after can subduing welding, can contribute to the trend of two cavitys that form between substrate and heat exchanger plates, be convenient to flowing of fluid, can effectively guarantee the efficiency of exchanger heat exchange.
Accompanying drawing explanation
Fig. 1 is the front view of spiral heat exchanger welding machine of the present invention.
Fig. 2 is the top view of spiral heat exchanger welding machine part-structure of the present invention.
The specific embodiment
See in figure, the structure of spiral heat exchanger welding machine of the present invention comprises frame 1, is provided with rotating disk 2 in frame 1, and rotating disk 2 is connected with drive motors 13, and under the drive of drive motors 13, rotating disk 2 can rotate in frame 1.
Crossbeam 11 is hollow structure, and described pushing mechanism comprises the screw rod 12 that is arranged on rotationally crossbeam 11 inside, and swivel nut 5 has been threaded on screw rod 12.Be fixed with servomotor 14 in the end of crossbeam 11, servomotor 14 is connected together with screw rod 12.On swivel nut 5, be fixed with coupling block 24, coupling block 24 reaches the outside of crossbeam 11, and clamping device comprises cross bar 8, and cross bar 8 is fixed on coupling block 24, and cross bar 8 is parallel to crossbeam 11, and is positioned at the outside of crossbeam 11.An end away from servomotor 14 on cross bar 8 is fixed with coupling bar 23, coupling bar 23 along continuous straight runs settings, and coupling bar 23 is perpendicular to cross bar 8.Described welding gun 6 and probe are all connected in the inner end of coupling bar 23 by adjusting bolt, by the adjusting to adjusting bolt, height that can Butt welding gun 6 is finely tuned.Be fixed with baffle plate 7 in the outer end of coupling bar 23, welding gun 6 and baffle plate 7 all vertically arrange.
The work of servomotor 14 is controlled by controller, and controller and probe are connected, and controller is accepted after the signal of probe, controls the rotation of servomotor 14, and then reaches and allow welding gun 6 move the object putting in place.Controller is simultaneously for controlling the rotation of above-mentioned drive motors 13, so that rotating disk 2 rotate in place.
In the time carrying out substrate and heat exchanger plates placement, General Requirements crossbeam 11 leaves welding gun 6 bands the top of rotating disk 2.Crossbeam 11 is connected by sleeve 4 and column 3, and sleeve 4 is socketed on column 3 with gap, is fixed with supporting mass 10 on column 3, and supporting mass 10 protrudes into the outside of column 3 outer peripheral faces.Supporting mass 10 is cylindric, and the height of supporting mass 10 on column 3 is fixed, after the bottom of sleeve 4 is rotatably supported on supporting mass 10, the position of welding gun 6 bottoms just in welding position on.On sleeve 4, be provided with spanner 9, spanner 9 is with sleeve 4 for being threaded, and spanner 9 runs through the wall body of sleeve 4, pulls after spanner 9, can change the cooperate degree between sleeve 4 and column 3, can rotating beam 11 or allow crossbeam 11 realize location.Unclamp after spanner 9, crossbeam 11 is pulled and put in place, can align the position of welding gun 6 with this datum mark by the mode of initial baseline point is set on substrate.Be wrenched after spanner 9, then start this welding machine, allow the position of probe exchange hot plate survey, and the rotation of servomotor 14 is controlled, so that welding gun 6 is operated on correct position, meanwhile, rotating disk 2 drives substrate and heat exchanger plates to rotate, thereby completes the welding of exchange hot plate.Datum mark is generally arranged on the end of heat exchanger plates or the home position place at substrate, and common preferably datum mark is arranged on the end of heat exchanger plates, and welding gun 6 detours one week along heat exchanger plates edge, this all-in-one-piece heat exchanger plates can be welded on substrate.
Realize the continuous operation of this welding machine, also need to be provided with continuous wire feeder, this wire feeder is arranged on the outrigger 22 that is positioned at frame 1 outside, on this outrigger 22, be provided with riser 17, the outside of riser 17 is provided with the reel 19 for the welding wire 21 of reeling, on riser 17, be fixed with a pair of clip wheel 18, be provided with three support wheels 20 on riser 17 between clip wheel 18 and reel 19, these three support wheels 20 are triangularly arranged.Between welding gun 6 and clip wheel 18, be provided with the conduit 15 of hollow, conduit 15 is for cross-under welding wire 21, and conduit 15 is fixed on riser 17 by joint 16.The welding wire 21 pulling out on reel 19 is by three support wheels 20, enter between two clip wheels 18, and entering into the position of welding gun 6 through joint 16, conduit 15, this advances for promoting welding wire 21 to clip wheel 18, so that welding wire 21 continues to enter into welding gun 6 positions.
Claims (10)
1. a spiral heat exchanger welding machine, comprise frame, in frame, be provided with rotating disk, be provided with welding gun in rotating disk outside, it is characterized in that, crossbeam along continuous straight runs is connected on column, welding gun is connected on clamping device, pushing mechanism set on clamping device and crossbeam is connected, be provided with the probe for the position of spiral plate is surveyed in the position of welding gun, probe is connected with pushing mechanism by controller for controlling the work of pushing mechanism, and under the effect of pushing mechanism, welding gun moves along the length direction of crossbeam; Controller is also being accepted after probe signals for controlling the rotating speed of rotating disk; Automatic wire feeding mechanism is used for to welding gun automatic transport welding wire.
2. spiral heat exchanger welding machine according to claim 1, is characterized in that, described pushing mechanism comprises swivel nut, and swivel nut is threaded on screw rod, and screw rod is connected with servomotor, and clamping device is connected on swivel nut; Described controller is for controlling the rotation of servomotor.
3. spiral heat exchanger welding machine according to claim 2, is characterized in that, clamping device comprises the cross bar being fixed on swivel nut, and cross bar parallels with crossbeam, and welding gun is fixed on cross bar.
4. spiral heat exchanger welding machine according to claim 3, is characterized in that, crossbeam is hollow structure, and described screw rod and swivel nut are all arranged in crossbeam, are fixed with coupling block on swivel nut, and described cross bar is fixed on coupling block; Servomotor is fixed on the end of crossbeam.
5. according to the spiral heat exchanger welding machine described in claim 3 or 4, it is characterized in that, be fixed with coupling bar in the end of cross bar, welding gun is fixed on the inner end of coupling bar, and the outer end of coupling bar is fixed with baffle plate, and baffle plate and welding gun be vertically upper setting all.
6. according to the spiral heat exchanger welding machine described in claim 1,2,3 or 4, it is characterized in that, on described crossbeam, be fixed with sleeve, sleeve is socketed on column with gap, is fixed with supporting mass on column, and supporting mass is for stop sleeve; On sleeve, be provided with the spanner that runs through its wall body, spanner is used for making sleeve to be circumferentially fixed on column.
7. according to the spiral heat exchanger welding machine described in claim 1,2,3 or 4, it is characterized in that, the structure of described wire feeder comprises the reel for the welding wire of reeling, and is provided with a pair of clip wheel for clamping, drive welding wire between reel and welding gun.
8. spiral heat exchanger welding machine according to claim 7, is characterized in that, described clip wheel is arranged on riser, is provided with support wheel on riser, and support wheel is between clip wheel and reel, and support wheel is three, and these three support wheels are triangularly arranged.
9. spiral heat exchanger welding machine according to claim 8, is characterized in that, is provided with the conduit for cross-under welding wire between welding gun and clip wheel, and one end of conduit is connected with welding gun, and the other end is fixed on riser by joint.
10. according to the spiral heat exchanger welding machine described in claim 1,2,3 or 4, it is characterized in that, described frame is triangular in shape, and three bights of frame protrude into the outside of rotating disk, and described column is arranged on a bight of frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310719393.7A CN103769722B (en) | 2013-12-20 | 2013-12-20 | Spiral heat exchanger welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310719393.7A CN103769722B (en) | 2013-12-20 | 2013-12-20 | Spiral heat exchanger welding machine |
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| Publication Number | Publication Date |
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| CN103769722A true CN103769722A (en) | 2014-05-07 |
| CN103769722B CN103769722B (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310719393.7A Active CN103769722B (en) | 2013-12-20 | 2013-12-20 | Spiral heat exchanger welding machine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104526747A (en) * | 2014-12-24 | 2015-04-22 | 江门市蓬江区华龙包装材料有限公司 | Air bubble film cutting table |
| CN104874935A (en) * | 2015-06-12 | 2015-09-02 | 吴江市松陵镇铭益自动化机械设备厂 | Automatic welding and conveying device for shoemaking |
| KR101779795B1 (en) * | 2017-01-03 | 2017-09-19 | 주식회사 제이피티 | Automatic welding machine and method of spiral heat exchanger |
| CN109894782A (en) * | 2019-04-15 | 2019-06-18 | 河北华环化工设备制造有限公司 | A kind of spiral plate end face welder |
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| JPS5662676A (en) * | 1979-10-30 | 1981-05-28 | Shin Meiwa Ind Co Ltd | Automatic welding device |
| CN2164938Y (en) * | 1993-08-11 | 1994-05-18 | 刘改成 | NC automatic tracking welding positioner |
| CN201264147Y (en) * | 2008-08-12 | 2009-07-01 | 上海汽车改装厂有限公司 | Welding device |
| CN201304539Y (en) * | 2008-11-26 | 2009-09-09 | 天津烁宝焊研科技有限公司 | Constant line velocity circular seam welding machine |
| CN203236099U (en) * | 2013-05-06 | 2013-10-16 | 绍兴县顺昌管业有限公司 | Novel welding machine |
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2013
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5662676A (en) * | 1979-10-30 | 1981-05-28 | Shin Meiwa Ind Co Ltd | Automatic welding device |
| CN2164938Y (en) * | 1993-08-11 | 1994-05-18 | 刘改成 | NC automatic tracking welding positioner |
| CN201264147Y (en) * | 2008-08-12 | 2009-07-01 | 上海汽车改装厂有限公司 | Welding device |
| CN201304539Y (en) * | 2008-11-26 | 2009-09-09 | 天津烁宝焊研科技有限公司 | Constant line velocity circular seam welding machine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104526747A (en) * | 2014-12-24 | 2015-04-22 | 江门市蓬江区华龙包装材料有限公司 | Air bubble film cutting table |
| CN104874935A (en) * | 2015-06-12 | 2015-09-02 | 吴江市松陵镇铭益自动化机械设备厂 | Automatic welding and conveying device for shoemaking |
| CN104874935B (en) * | 2015-06-12 | 2017-07-04 | 吴江市松陵镇铭益自动化机械设备厂 | A kind of shoemaking automatic welding conveying device |
| KR101779795B1 (en) * | 2017-01-03 | 2017-09-19 | 주식회사 제이피티 | Automatic welding machine and method of spiral heat exchanger |
| CN109894782A (en) * | 2019-04-15 | 2019-06-18 | 河北华环化工设备制造有限公司 | A kind of spiral plate end face welder |
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|---|---|
| CN103769722B (en) | 2015-09-23 |
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Address after: 318000 Xiadiandi of Nanfeng Street South Industrial Zone, Xianju County, Taizhou City, Zhejiang Province Patentee after: Zhejiang Hengzhitai Medical Equipment Co., Ltd. Address before: 317300 Taizhou Xianju County Chengnan Industrial Zone, Zhejiang Province Patentee before: TAIZHOU HENGS THAI MEDICAL EQUIPMENT CO., LTD. |