CN203508855U - Forming machine for water storage buckets of solar water heaters - Google Patents

Forming machine for water storage buckets of solar water heaters Download PDF

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Publication number
CN203508855U
CN203508855U CN201320686823.5U CN201320686823U CN203508855U CN 203508855 U CN203508855 U CN 203508855U CN 201320686823 U CN201320686823 U CN 201320686823U CN 203508855 U CN203508855 U CN 203508855U
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CN
China
Prior art keywords
forming machine
base plate
guide rail
fixed
solar water
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.)
Withdrawn - After Issue
Application number
CN201320686823.5U
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Chinese (zh)
Inventor
韩良华
许云峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HAINING JINNENG WATER HEATER Co Ltd
Original Assignee
HAINING JINNENG WATER HEATER Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
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Application filed by HAINING JINNENG WATER HEATER Co Ltd filed Critical HAINING JINNENG WATER HEATER Co Ltd
Priority to CN201320686823.5U priority Critical patent/CN203508855U/en
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Publication of CN203508855U publication Critical patent/CN203508855U/en
Withdrawn - After Issue legal-status Critical Current
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Abstract

The utility model provides a forming machine for water storage buckets of solar water heaters, belongs to the technical field of machinery, and solves the technical problems of low machining efficiency of the water storage buckets of the solar water heaters and the like in the prior art. The forming machine comprises a guide rail, left support pillars, right support pillars, a bottom plate, an air cylinder and a roller, wherein the right end of the bottom plate is fixed at the midpoint of a connecting rod, and the left end of the bottom plate is suspended; a sliding block is connected onto the guide rail in a sliding manner, and a driving device is also fixed on the guide rail; the air cylinder is arranged vertically, a cylinder body of the air cylinder is fixed on the lower end surface of the sliding block, the upper end of a piston rod of the air cylinder is inserted in the cylinder body of the air cylinder, a press block is fixedly arranged at the lower end of the piston rod, the roller is pivot-connected onto the press block, and the roller surface of the roller can be attached to the upper plate surface of the bottom plate. The forming machine has the advantages of high automation degree, high machining efficiency and the like.

Description

A kind of forming machine of water butt of solar water heater
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of forming machine of water butt of solar water heater.
Background technology
Solar water heater can be converted into heat energy by solar energy, and water, from low-temperature heat to high temperature, is used to meet the hot water of people in life, production.Solar water heater is divided into vacuum pipe solar water heater and flat solar water heater by version, and vacuum pipe solar water heater is main, occupies domestic 95% the market share.Electron tubes type domestic solar water heater is comprised of related accessories such as thermal-collecting tube, water butt and supports.
The water butt of solar water heater is when moulding, as shown in Figure 1, conventionally the relative dual-side of the iron sheet of the shape that is rectangle 10 need to be carried out respectively to flange and form two grabs 27 of clasp joint mutually, then iron sheet 10 is rolled and is made the mutual clasp joint of grab 27 on dual-side, finally the mutual clasp joint of dual-side place is carried out to pressing, make it to form a circular bucket.
And in prior art, the forming machine not matching with above-mentioned technique, conventionally by pressing manually, not only working (machining) efficiency is low, and the connective stability of dual-side junction is also difficult to guarantee.
Summary of the invention
The utility model is the problems referred to above that exist for existing technology, and a kind of forming machine of water butt of solar water heater is provided, and technical problem to be solved in the utility model is: the working (machining) efficiency of the water butt of solar water heater how.
The purpose of this utility model can realize by following technical proposal:
A kind of forming machine of water butt of solar water heater, it is characterized in that, described forming machine comprises a guide rail, two left support posts and two right support posts, the left end place of described guide rail is all fixed in the upper end of described two left support posts, the right-hand member place of described guide rail is all fixed in the upper end of described two right support posts, between described two right support posts, by a connecting rod, is connected mutually; Described forming machine also comprises a base plate arranging with described guide rail parallel, and the right-hand member of described base plate is fixed on the midpoint of described connecting rod, the unsettled setting of left end of described base plate; On described guide rail, slidably connect a slide block, on described guide rail, be also fixed with a drive unit for driving described slide block to move along rail length direction; Described forming machine also comprises cylinder and roller, described cylinder vertically arranges, the cylinder body of described cylinder is fixed on the lower surface of described slide block, the upper end of the piston rod of described cylinder is plugged in the cylinder body of described cylinder, the lower end of described piston rod is installed with a briquetting, and described roller is articulated on described briquetting and the wheel face of this roller can recline mutually with the upper face of described base plate.
Its operation principle is as follows: iron sheet is positioned over to base plate below and around this base plate convolution, make the mutual clasp joint of grab of iron sheet dual-side, then iron sheet dual-side junction is positioned on the upper face of base plate, make the length direction of the gap base plate of junction, then by cylinder, the roller on briquetting is installed with in one end of iron sheet side junction, then by drive unit band movable slider, move, make pair of rollers iron sheet side seam place carry out pressing, after pressing, can make water storage cylinder take out along the free end of base plate; Compared with prior art, this forming machine does not need by pressing manually, and adopt the cooperation of roller, cylinder and drive unit to realize, automaticity is higher, not only working (machining) efficiency is high, and for the connective stability of iron sheet junction, there is the guarantee of standard, avoid occurring in-and-out phenomenon.
In the forming machine of the water butt of above-mentioned a kind of solar water heater, on described slide block, be also provided with two and can launch ultrared He-Ne laser, described infrared ray can irradiate on the center line of described base plate upper face.Be designed with after He-Ne laser, after iron sheet is reeled along base plate, two He-Ne lasers are launched respectively infrared radiation on the center line of base plate upper face, at this moment He-Ne laser can be aimed in the gap of iron sheet dual-side junction and be radiated at two points on center line, thereby realize the centering of iron sheet, make the pressing of roller more even, improve the connective stability of iron sheet dual-side junction.
In the forming machine of the water butt of above-mentioned a kind of solar water heater, described drive unit comprises holder one and holder two, described holder one is fixed on the left end of described guide rail, described holder two is fixed on the right-hand member of described guide rail, on described holder one and holder two, be respectively arranged with bearing one and bearing two, described drive unit also comprises motor and screw mandrel, described motor is fixed on described holder two, the left end of described screw mandrel is plugged in described bearing one, and the right-hand member of described screw mandrel passes described bearing two and is connected with the bearing end of described motor; Described drive unit also comprises that one is threadedly connected to the screw on described screw mandrel, and described screw is connected by a linking arm and described slide block mutually with described slide block.Electric machine rotation drives screw mandrel to rotate, thereby screw is moved along the length direction of screw mandrel, drive the slide block being connected with screw to move, thereby make pair of rollers iron sheet dual-side junction carry out pressing, when roller slides into the other end from one end of iron sheet, can make again motor reversal drive roller back to move, pressing repeatedly, improves the connective stability of iron sheet dual-side junction.
In the forming machine of the water butt of above-mentioned a kind of solar water heater, described guide rail comprises front beam and the rear cross beam that along continuous straight runs arranges, the left end of described front beam is connected by left longeron mutually with the left end of rear cross beam, the right-hand member of described front beam is connected by right vertical beam mutually with the right-hand member of rear cross beam, the front end face of described slide block is vertically installed with two front fixed axis, the place, outer end of described two front fixed axis is all rotatably connected to front runner, and the wheel face of described front runner is posted by the upper surface of described front beam; Fixed axis after the rear end face of described slide block is vertically installed with two, place, the outer end of fixed axis is all rotatably connected to rear runner after described two, and the wheel face of described rear runner is posted by the upper surface of described rear cross beam.Slide block is realized and being slided by front runner, rear runner, and the frictional resistance being subject to while moving it is less, improves the smoothness that slide block moves.
In the forming machine of the water butt of above-mentioned a kind of solar water heater, between described two left support posts, be installed with an installing plate, described forming machine also comprises an oil cylinder vertically arranging, the cylinder body of described oil cylinder is fixed on described installing plate, and the lower end of the piston rod of described oil cylinder is plugged in described oil cylinder; Described forming machine also comprises a stage clip, and the lower end of described stage clip is connected mutually with the upper end of the piston rod of described oil cylinder, and the upper end of described stage clip can lean with the lower face of described base plate.At left support post, place is designed with after oil cylinder, when carrying out pressing, can the free end of base plate be supported by the elongation of oil cylinder, avoids the monolateral stressed concentrated easily damage of stress that occurs of base plate; After pressing, when water butt need to be taken out, make oil cylinder shrink, thereby the free end by base plate take out by water butt; Be designed with stage clip, can play certain cushioning effect, because the flexible precision controllability of oil cylinder is lower, when oil cylinder, stretched longly a bit, can make base plate occur crooked; And when oil cylinder elongation degree inadequate, do not have again supporting role, be designed with after stage clip, can address this problem.
In the forming machine of the water butt of above-mentioned a kind of solar water heater, on described left longeron, be installed with a hinge, described forming machine also comprises a bracing frame, the upper end of support frame as described above and described hinge are hinged, the lower end of support frame as described above has a pressure pin, and described pressure pin can be posted by the lower face of described base plate.Be designed with after bracing frame, can to the free end of base plate, support by pressure pin, when pressing, bracing frame is put down, can support the free end of base plate, avoid the other end of base plate to occur that stress is concentrated; And after pressing, bracing frame rotation can be packed up, then water butt is taken out.
In the forming machine of the water butt of above-mentioned a kind of solar water heater, the cross section of described base plate is " work " font.
In the forming machine of the water butt of above-mentioned a kind of solar water heater, the upper face of described base plate evenly offers several through holes along self center line, in each through hole, be provided with a clamp, the both sides of described clamp are all fixed on the hole wall of through hole, and the axis of each through hole coincides with the center line that is positioned at the clamp of this through hole.Be designed with after clamp, whether the ruddiness that convenient identification He-Ne laser sends has aimed at the center line of base plate upper face.
In the forming machine of the water butt of above-mentioned a kind of solar water heater, described forming machine also comprises that at least one can be plugged in the chock plug in described through hole, and the upper end of described chock plug is installed with pressing plate.Be designed with after chock plug and pressing plate, when iron sheet around and be positioned over after base plate upper face, can to one end of iron sheet, push by pressing plate, avoid iron sheet to get loose, do not need operator that one end of iron sheet is manually mediated on the upper face of base plate yet, convenient to operation.
In the forming machine of the water butt of above-mentioned a kind of solar water heater, the lower end of described chock plug offer can with the draw-in groove of described clamp phase clamping.
Compared with prior art, the utlity model has following advantage:
1, compared with prior art, this forming machine does not need by pressing manually, and adopt the cooperation of roller, cylinder and drive unit to realize, automaticity is higher, not only working (machining) efficiency is high, and for the connective stability of iron sheet junction, there is the guarantee of standard, avoid occurring in-and-out phenomenon;
2, be designed with after He-Ne laser, after iron sheet is reeled along base plate, two He-Ne lasers find that respectively infrared radiation is on the center line of base plate upper face, at this moment He-Ne laser can be aimed in the gap of iron sheet dual-side junction and be radiated at two points on center line, thereby realize the centering of iron sheet, make the pressing of roller more even, improve the connective stability of iron sheet dual-side junction;
3, at left support post place, be designed with after oil cylinder, when carrying out pressing, can the free end of base plate be supported by the elongation of oil cylinder, avoid the monolateral stressed concentrated easily damage of stress that occurs of base plate; After pressing, when water butt need to be taken out, make oil cylinder shrink, thereby the free end by base plate take out by water butt; Be designed with stage clip, can play certain cushioning effect, because the flexible precision controllability of oil cylinder is lower, when oil cylinder, stretched longly a bit, can make base plate occur crooked; And when oil cylinder elongation degree inadequate, do not have again supporting role, be designed with after stage clip, can address this problem;
4, be designed with after bracing frame, can to the free end of base plate, support by pressure pin, when pressing, bracing frame is put down, can support the free end of base plate, avoid the other end of base plate to occur that stress is concentrated; And after pressing, bracing frame rotation can be packed up, then water butt is taken out.
Accompanying drawing explanation
Fig. 1 is the structural representation of this iron sheet in embodiment.
Fig. 2 is the structural representation of this forming machine in embodiment.
Fig. 3 is the installation diagram of this slide block and slide rail in embodiment.
Fig. 4 is the installation diagram of this bracing frame and left longeron in embodiment.
Fig. 5 is the structural representation of this chock plug in embodiment.
In figure, 1 guide rail; 2, left support post; 3, right support post; 4, base plate; 5, slide block; 6, He-Ne laser; 7, cylinder; 8, roller; 9, briquetting; 10, iron sheet; 11, holder one; 12, holder two; 13, motor; 14, screw mandrel; 15, screw; 16, front beam; 17, rear cross beam; 18, left longeron; 19, front fixed axis; 20, front runner; 21, rear fixed axis; 22, rear runner; 23, installing plate; 24, oil cylinder; 25, stage clip; 26, hinge; 27, grab; 28, pressure pin; 29, through hole; 30, clamp; 31, chock plug; 32, pressing plate; 33, draw-in groove; 34, bracing frame.
The specific embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, this forming machine comprises a guide rail 1, two left support posts 2 and two right support posts 3, the left end place of guide rail 1 is all fixed in the upper end of two left support posts 2, the right-hand member place of guide rail 1 is all fixed in the upper end of two right support posts 3, between two right support posts 3, by a connecting rod, is connected mutually; Forming machine also comprises a base plate 4 be arrangeding in parallel with guide rail 1, and the cross section of base plate 4 is " work " font, and the right-hand member of base plate 4 is fixed on the midpoint of connecting rod, the unsettled setting of left end of base plate 4; On guide rail 1, slidably connect a slide block 5, on guide rail 1, be also fixed with a drive unit for driving slide block 5 to move along guide rail 1 length direction.In the present embodiment, drive unit comprises holder 1 and holder 2 12, holder 1 is fixed on the left end of guide rail 1, holder 2 12 is fixed on the right-hand member of guide rail 1, on holder 1 and holder 2 12, be respectively arranged with bearing one and bearing two, drive unit also comprises motor 13 and screw mandrel 14, and motor 13 is fixed on holder 2 12, the left end of screw mandrel 14 is plugged in bearing one, and the right-hand member of screw mandrel 14 passes bearing two and is connected with the bearing end of motor 13; Drive unit also comprises that one is threadedly connected to the screw 15 on screw mandrel 14, and screw 15 is connected by a linking arm and slide block 5 mutually with slide block 5.As other scheme, can be also that cylinder promotes by drive assembly design.
As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, this forming machine also comprises cylinder 7 and roller 8, cylinder 7 vertically arranges, the cylinder body of cylinder 7 is fixed on the lower surface of slide block 5, the upper end of the piston rod of cylinder 7 is plugged in the cylinder body of cylinder 7, the lower end of piston rod is installed with a briquetting 9, and roller 8 is articulated on briquetting 9 and the wheel face of this roller 8 can recline mutually with the upper face of base plate 4.Specifically, guide rail 1 comprises front beam 16 and the rear cross beam 17 that along continuous straight runs arranges, the left end of front beam 16 is connected by left longeron 18 mutually with the left end of rear cross beam 17, the right-hand member of front beam 16 is connected by right vertical beam mutually with the right-hand member of rear cross beam 17, the front end face of slide block 5 is vertically installed with two front fixed axis 19, the place, outer end of two front fixed axis 19 is all rotatably connected to front runner 20, and the wheel face of front runner 20 is posted by the upper surface of front beam 16; The rear end face of slide block 5 is vertically installed with the place, outer end of fixed axis 21 after 21, two of fixed axis after two and is all rotatably connected to rear runner 22, and the wheel face of rear runner 22 is posted by the upper surface of rear cross beam 17.
As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, between two left support posts 2, be installed with an installing plate 22, forming machine also comprises an oil cylinder 24 vertically arranging, and the cylinder body of oil cylinder 24 is fixed on installing plate 22, and the lower end of the piston rod of oil cylinder 24 is plugged in oil cylinder 24; Forming machine also comprises a stage clip 25, and the lower end of stage clip 25 is connected mutually with the upper end of the piston rod of oil cylinder 24, and the upper end of stage clip 25 can lean with the lower face of base plate 4.On left longeron 18, be installed with a hinge 26, forming machine also comprises a bracing frame 34, and the upper end of bracing frame 34 and hinge 26 are hinged, and the lower end of bracing frame 34 has a pressure pin 28, and pressure pin 28 can be posted by the lower face of base plate 4.
As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, on slide block 5, be also provided with two and can launch ultrared He-Ne laser 6, infrared ray can irradiate on the center line of base plate 4 upper faces.The upper face of base plate 4 evenly offers several through holes 29 along self center line, in each through hole 29, be provided with a clamp 30, the both sides of clamp 30 are all fixed on the hole wall of through hole 29, and the axis of each through hole 29 coincides with the center line that is positioned at the clamp 30 of this through hole 29.Forming machine also comprises that at least one can be plugged in the chock plug 31 in through hole 29, and the upper end of chock plug 31 is installed with pressing plate 32.The lower end of chock plug 31 offer can with the draw-in groove 33 of clamp 30 phase clampings.
Iron sheet is positioned over to base plate below and around this base plate convolution, make the mutual clasp joint of grab of iron sheet dual-side, then iron sheet dual-side junction is positioned on the upper face of base plate, make the length direction of the gap base plate of junction, then by cylinder, the roller on briquetting is installed with in one end of iron sheet side junction, then by drive unit band movable slider, moves, make pair of rollers iron sheet side seam place carry out pressing, after pressing, can make water storage cylinder take out along the free end of base plate.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.

Claims (10)

1. the forming machine of the water butt of a solar water heater, it is characterized in that, described forming machine comprises a guide rail (1), two left support posts (2) and two right support posts (3), the left end place of described guide rail (1) is all fixed in the upper end of described two left support posts (2), the right-hand member place of described guide rail (1) is all fixed in the upper end of described two right support posts (3), between described two right support posts (3), by a connecting rod, is connected mutually; Described forming machine also comprises a base plate (4) be arrangeding in parallel with described guide rail (1), and the right-hand member of described base plate (4) is fixed on the midpoint of described connecting rod, the unsettled setting of left end of described base plate (4); On described guide rail (1), slidably connect a slide block (5), on described guide rail (1), be also fixed with a drive unit for driving described slide block (5) to move along guide rail (1) length direction; Described forming machine also comprises cylinder (7) and roller (8), described cylinder (7) vertically arranges, the cylinder body of described cylinder (7) is fixed on the lower surface of described slide block (5), the upper end of the piston rod of described cylinder (7) is plugged in the cylinder body of described cylinder (7), the lower end of described piston rod is installed with a briquetting (9), and described roller (8) is articulated in described briquetting (9) wheel face upper and this roller (8) and can reclines mutually with the upper face of described base plate (4).
2. the forming machine of the water butt of solar water heater according to claim 1, it is characterized in that, on described slide block (5), be also provided with two and can launch ultrared He-Ne laser (6), described infrared ray can irradiate on the center line of described base plate (4) upper face.
3. the forming machine of the water butt of solar water heater according to claim 2, it is characterized in that, described drive unit comprises holder one (11) and holder two (12), described holder one (11) is fixed on the left end of described guide rail (1), described holder two (12) is fixed on the right-hand member of described guide rail (1), on described holder one (11) and holder two (12), be respectively arranged with bearing one and bearing two, described drive unit also comprises motor (13) and screw mandrel (14), described motor (13) is fixed on described holder two (12), the left end of described screw mandrel (14) is plugged in described bearing one, the right-hand member of described screw mandrel (14) passes described bearing two and is connected with the bearing end of described motor (13), described drive unit also comprises that one is threadedly connected to the screw (15) on described screw mandrel (14), and described screw (15) is connected by a linking arm and described slide block (5) mutually with described slide block (5).
4. the forming machine of the water butt of solar water heater according to claim 3, it is characterized in that, described guide rail (1) comprises front beam (16) and the rear cross beam (17) that along continuous straight runs arranges, the left end of described front beam (16) is connected by left longeron (18) mutually with the left end of rear cross beam (17), the right-hand member of described front beam (16) is connected by right vertical beam mutually with the right-hand member of rear cross beam (17), the front end face of described slide block (5) is vertically installed with two front fixed axis (19), the place, outer end of described two front fixed axis (19) is all rotatably connected to front runner (20), the wheel face of described front runner (20) is posted by the upper surface of described front beam (16), fixed axis (21) after the rear end face of described slide block (5) is vertically installed with two, after described two, place, the outer end of fixed axis (21) is all rotatably connected to rear runner (22), and the wheel face of described rear runner (22) is posted by the upper surface of described rear cross beam (17).
5. the forming machine of the water butt of solar water heater according to claim 4, it is characterized in that, between described two left support posts (2), be installed with an installing plate (22), described forming machine also comprises an oil cylinder (24) vertically arranging, it is upper that the cylinder body of described oil cylinder (24) is fixed on described installing plate (22), and the lower end of the piston rod of described oil cylinder (24) is plugged in described oil cylinder (24); Described forming machine also comprises a stage clip (25), and the lower end of described stage clip (25) is connected mutually with the upper end of the piston rod of described oil cylinder (24), and the upper end of described stage clip (25) can lean with the lower face of described base plate (4).
6. the forming machine of the water butt of solar water heater according to claim 5, it is characterized in that, on described left longeron (18), be installed with a hinge (26), described forming machine also comprises a bracing frame (34), the upper end of support frame as described above (34) and described hinge (26) are hinged, the lower end of support frame as described above (34) has a pressure pin (28), and described pressure pin (28) can be posted by the lower face of described base plate (4).
7. the forming machine of the water butt of solar water heater according to claim 6, is characterized in that, the cross section of described base plate (4) is " work " font.
8. the forming machine of the water butt of solar water heater according to claim 7, it is characterized in that, the upper face of described base plate (4) evenly offers several through holes (29) along self center line, in each through hole (29), be provided with a clamp (30), the both sides of described clamp (30) are all fixed on the hole wall of through hole (29), and the axis of each through hole (29) coincides with the center line that is positioned at the clamp (30) of this through hole (29).
9. the forming machine of the water butt of solar water heater according to claim 8, it is characterized in that, described forming machine also comprises that at least one can be plugged in the chock plug (31) in described through hole (29), and the upper end of described chock plug (31) is installed with pressing plate (32).
10. the forming machine of the water butt of solar water heater according to claim 9, is characterized in that, the lower end of described chock plug (31) offer can with the draw-in groove (33) of described clamp (30) phase clamping.
CN201320686823.5U 2013-11-01 2013-11-01 Forming machine for water storage buckets of solar water heaters Withdrawn - After Issue CN203508855U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320686823.5U CN203508855U (en) 2013-11-01 2013-11-01 Forming machine for water storage buckets of solar water heaters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320686823.5U CN203508855U (en) 2013-11-01 2013-11-01 Forming machine for water storage buckets of solar water heaters

Publications (1)

Publication Number Publication Date
CN203508855U true CN203508855U (en) 2014-04-02

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Application Number Title Priority Date Filing Date
CN201320686823.5U Withdrawn - After Issue CN203508855U (en) 2013-11-01 2013-11-01 Forming machine for water storage buckets of solar water heaters

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103586363A (en) * 2013-11-01 2014-02-19 海宁金能热水器有限公司 Forming machine of water storage tank of solar water heater

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103586363A (en) * 2013-11-01 2014-02-19 海宁金能热水器有限公司 Forming machine of water storage tank of solar water heater
CN103586363B (en) * 2013-11-01 2015-11-18 海宁金能热水器有限公司 A kind of forming machine of water butt of solar water heater

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Granted publication date: 20140402

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