CN103084842B - Metal tubing two-end molding mechanism - Google Patents
Metal tubing two-end molding mechanism Download PDFInfo
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- CN103084842B CN103084842B CN201310022801.3A CN201310022801A CN103084842B CN 103084842 B CN103084842 B CN 103084842B CN 201310022801 A CN201310022801 A CN 201310022801A CN 103084842 B CN103084842 B CN 103084842B
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Abstract
The invention provides a metal tubing two-end molding mechanism which comprises a second molding clamping mechanism, a third molding clamping mechanism, a horizontal switchover mechanism, a molding push mechanism, a cutting mechanism, a first translation molding ejection mechanism, a second translation molding ejection mechanism and a first molding clamping mechanism. The cutting mechanism, the first translation molding ejection mechanism, the second translation molding ejection mechanism and the first molding clamping mechanism are respectively arranged on the molding push mechanism. The first translation molding ejection mechanism and the second translation molding ejection mechanism are arranged at two sides of the first molding clamping mechanism in the pushing direction of the molding push mechanism. The cutting mechanism is arranged behind the first molding clamping mechanism. The horizontal switchover mechanism is arranged in front of the first molding clamping mechanism. A tube front end punch is arranged on the horizontal switchover mechanism. The second molding clamping mechanism and the third molding clamping mechanism are respectively arranged on the horizontal switchover mechanism and distributed in the movement direction of the horizontal switchover mechanism. The metal tubing two-end molding mechanism is capable of not only chambering and molding the front end of a tube, but also chambering and molding the rear end of the tube.
Description
Technical field
The present invention relates to the technical field of tube forming equipment, refer in particular to a kind of metal pipe material two ends shaping mechanism.
Background technology
Known in the industry, although the shaping mechanism energy one-shot forming on common cutting machine, reduce processing number of times, but it generally can only be shaping to the front end of tubing, make its design also deposit drawback like this, such as the tubing after chipless sawing sheet have some reducings, so just can not insert the plug of bending machine, cause the inconvenience in processing, reduce operating efficiency.Therefore, because of the requirement of actual condition, urgent need is a kind of now can realize the shaping mechanism in tubing two ends.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of reliable, metal pipe material two ends shaping mechanism that stable action, operating efficiency are high reasonable in design is provided.
For achieving the above object, technical scheme provided by the present invention is: a kind of metal pipe material two ends shaping mechanism, it includes sawing sheet mechanism, the shaping material jacking mechanism of first translation, the shaping material jacking mechanism of second translation, first formation clamping mechanism, second formation clamping mechanism, 3rd formation clamping mechanism, horizontal inversion mechanism, shaping propulsive mechanism, wherein, sawing sheet mechanism, the shaping material jacking mechanism of first translation, the shaping material jacking mechanism of second translation, first formation clamping mechanism is arranged on shaping propulsive mechanism respectively, driven by this shaping propulsive mechanism and realize integral translation propelling, simultaneously, on the direction of propulsion of shaping propulsive mechanism, the shaping material jacking mechanism of this first translation and the shaping material jacking mechanism correspondence of the second translation are located at the both sides of the first formation clamping mechanism, this sawing sheet mechanism correspondence is located at the rear of the first formation clamping mechanism, and match with this first formation clamping mechanism, described horizontal inversion mechanism is the corresponding front being located at the first formation clamping mechanism on the direction of propulsion of shaping propulsive mechanism, and, the moving direction of this horizontal inversion mechanism is vertical with the direction of propulsion of shaping propulsive mechanism, this horizontal inversion mechanism is provided with the tubing front end drift acting on metal pipe material on this first formation clamping mechanism, second formation clamping mechanism and the 3rd formation clamping mechanism are arranged on this horizontal inversion mechanism respectively, and arrange along the moving direction of this horizontal inversion mechanism, driven by this horizontal inversion mechanism and realize integral translation, simultaneously, this second formation clamping mechanism matches with the shaping material jacking mechanism of the first translation, 3rd formation clamping mechanism matches with the shaping material jacking mechanism of the second translation.
Described sawing sheet mechanism includes cutter head and for driving the cutter head motor of this cutter head cutting metal tubing.
The shaping material jacking mechanism of described first translation or the shaping material jacking mechanism of the second translation have included support body, can slide up and down slide block, the transposition cylinder slided up and down for driving this slide block, for the short tube push rod that short metal pipe material is released, for the short tube pusher cylinder driving this short tube push rod flexible, wherein, on the direction of propulsion of shaping propulsive mechanism, slide block correspondence is located at the front of support body, short tube push rod correspondence is located at the rear of slide block, the transposition cylinder that cylinder body is vertically installed is provided with above this slide block, the short tube pusher cylinder that cylinder body level is installed is provided with at the rear of this short tube push rod, the piston rod of this transposition cylinder down stretches out and is fixedly connected with the top of slide block, the piston rod of this short tube pusher cylinder is released forward and is fixedly connected with one end of short tube push rod, the telescopic direction of this short tube push rod is parallel to the direction of propulsion of shaping propulsive mechanism, and, this slide block offers the through hole passed for short tube push rod, simultaneously, this slide block is provided with at least one the tubing rear end drift of the metal pipe material acted on corresponding shaping clamp system.
Described second formation clamping mechanism and the 3rd formation clamping mechanism drive translation by the horizontal transposition motor of horizontal inversion mechanism.
Described shaping propulsive mechanism includes and moves integrally support and the shaping propelling cylinder for driving this to move integrally support translation.
Described tubing rear end drift has about two to arrange, and is divided into pre-stamping punch and forming punching head, and, on slide block for short tube push rod through through hole be located at these two tubing rear end drifts.
The present invention is after have employed such scheme, its great advantage be of the present invention rational in infrastructure reliable, efficiency is high, not only can to the front end reaming-forming of tubing, also can to the rear end reaming-forming of tubing, thus achieve the object that shaping pipe easily inserts plug, its operating efficiency is improved, the end forming requirements of client to tubing can be met simultaneously.
Accompanying drawing explanation
Fig. 1 is axonometric drawing of the present invention.
Fig. 2 is top view of the present invention.
Fig. 3 is side view of the present invention.
Fig. 4 is the axonometric drawing of the shaping material jacking mechanism of the first translation of the present invention or the shaping material jacking mechanism of the second translation.
Fig. 5 is operating principle schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described.
Shown in accompanying drawing 1 to accompanying drawing 4, metal pipe material two ends shaping mechanism described in the present embodiment, it includes sawing sheet mechanism 1, the shaping material jacking mechanism 2 of first translation, the shaping material jacking mechanism 3 of second translation, first formation clamping mechanism 4, second formation clamping mechanism 5, 3rd formation clamping mechanism 6, horizontal inversion mechanism 7, shaping propulsive mechanism 8, wherein, sawing sheet mechanism 1, the shaping material jacking mechanism 2 of first translation, the shaping material jacking mechanism 3 of second translation, first formation clamping mechanism 4 is arranged on shaping propulsive mechanism 8 respectively, driven by this shaping propulsive mechanism 8 and realize integral translation propelling, simultaneously, on the direction of propulsion of shaping propulsive mechanism 8, the shaping material jacking mechanism of this first translation 2 and the second translation shaping material jacking mechanism 3 correspondence are located at the both sides of the first formation clamping mechanism 4, this sawing sheet mechanism 1 correspondence is located at the rear of the first formation clamping mechanism 4, and match with this first formation clamping mechanism 4, described horizontal inversion mechanism 7 is the corresponding front being located at the first formation clamping mechanism 4 on the direction of propulsion of shaping propulsive mechanism 8, and, the moving direction of this horizontal inversion mechanism 7 is vertical with the direction of propulsion of shaping propulsive mechanism 8, this horizontal inversion mechanism 7 is provided with the tubing front end drift 9 acting on metal pipe material on this first formation clamping mechanism 4, second formation clamping mechanism 5 and the 3rd formation clamping mechanism 6 are arranged on this horizontal inversion mechanism 7 respectively, and arrange along the moving direction of this horizontal inversion mechanism 7, driven by this horizontal inversion mechanism 7 and realize integral translation, simultaneously, this second formation clamping mechanism 5 matches with the shaping material jacking mechanism 2 of the first translation, 3rd formation clamping mechanism 6 matches with the shaping material jacking mechanism 3 of the second translation, this tubing front end drift 9 is between the second formation clamping mechanism 5 and the 3rd formation clamping mechanism 6.
Described sawing sheet mechanism 1 includes cutter head 1-1 and for driving the cutter head motor 1-2 of this cutter head 1-1 cutting metal tubing.
The shaping material jacking mechanism of described first translation 2 or the shaping material jacking mechanism 3 of the second translation have included support body 10, can slide up and down slide block 11, for the transposition cylinder 12 driving this slide block 11 to slide up and down, for the short tube push rod 13 that short metal pipe material is released, for the short tube pusher cylinder 14 driving this short tube push rod 13 flexible, wherein, on the direction of propulsion of shaping propulsive mechanism 8, slide block 11 correspondence is located at the front of support body 10, short tube push rod 13 correspondence is located at the rear of slide block 11, the transposition cylinder 12 that cylinder body is vertically installed is provided with above this slide block 11, the short tube pusher cylinder 14 that cylinder body level is installed is provided with at the rear of this short tube push rod 13, the piston rod of this transposition cylinder 12 down stretches out and is fixedly connected with the top of slide block 11, the piston rod of this short tube pusher cylinder 14 is released forward and is fixedly connected with one end of short tube push rod 13, the telescopic direction of this short tube push rod 13 is parallel to the direction of propulsion of shaping propulsive mechanism 8, and, this slide block 11 offers the through hole 18 passed for short tube push rod 13, simultaneously, about two that this slide block 11 is provided with the metal pipe material acted on corresponding shaping clamp system tubing rear end drifts of arranging, be divided into pre-stamping punch 15-1 and forming punching head 15-2, and, on slide block 11 for short tube push rod 13 through through hole 18 be located at these two tubing rear end drifts.
Described second formation clamping mechanism 5 and the 3rd formation clamping mechanism 6 drive translation by the horizontal transposition motor 7-1 of horizontal inversion mechanism 7.
Described shaping propulsive mechanism 8 includes and moves integrally support 8-1 and the shaping propelling cylinder 8-2 for driving this to move integrally support 8-1 translation, wherein, described sawing sheet mechanism 1, first translation shaping material jacking mechanism 2, second translation shaping material jacking mechanism 3, first formation clamping mechanism 4 is arranged on respectively to move integrally on support 8-1.
Be below the specific works principle of the present embodiment above-mentioned metal pipe material two ends shaping mechanism: shown in accompanying drawing 5, first sawing sheet mechanism 1 sawing sheet (cutter head 1-1 incising pipes under the drive of cutter head motor 1-2, but do not cut off), then feeding to the first formation clamping mechanism 4 place clamping, A condition as shown in Figure 5, horizontal inversion mechanism 7 action afterwards, until the tubing front end tubing front end drift 9 on it being moved to the first formation clamping mechanism 4 clamps, and aims at this tubing, B state as shown in Figure 5, tubing advances under the promotion of the shaping propelling cylinder 8-2 of shaping propulsive mechanism 8 afterwards, carries out front end reaming-forming, and shaping rear propulsive mechanism 8 resets, and the first formation clamping mechanism 4 unclamps afterwards, continue feeding, now, second formation clamping mechanism 5 is under the effect of horizontal inversion mechanism 7, come the front of the first formation clamping mechanism 4, and together with the first formation clamping mechanism 4, tubing is clamped, afterwards under the effect of shaping propulsive mechanism 8, tubing is broken by the first formation clamping mechanism 4, second formation clamping mechanism 5 clips the shaping tubing in front end 16, C state as shown in Figure 5, horizontal inversion mechanism 7 action again afterwards, removes the second formation clamping mechanism 5, and tubing front end drift 9 is moved to the predeterminated position in the first formation clamping mechanism 4 front, D state as shown in Figure 5, sawing sheet mechanism 1 continues sawing sheet afterwards, material is delivered to the clamping of the first formation clamping mechanism 4 place, the tubing that first formation clamping mechanism 4 clamps afterwards advances under the promotion of shaping propelling cylinder 8-2, carry out front end reaming-forming, horizontal inversion mechanism 7 continues action afterwards, the second formation clamping mechanism 5 clipping front end shaping pipe 16 is moved to the front of the shaping material jacking mechanism 2 of the first translation, simultaneously, 3rd formation clamping mechanism 6 comes the front of the first formation clamping mechanism 4, E state as shown in Figure 5, the shaping material jacking mechanism of first translation 2 is under the promotion of shaping propelling cylinder 8-2 afterwards, rear end reaming-forming is carried out to the tubing 16 on the second formation clamping mechanism 5, shaping aftershaping propelling cylinder 8-2 resets, two ends shaping pipe on second formation clamping mechanism 5 is then removed by the Material moving device of subsequent processing and is carried out following process, but when the pipe length on the second formation clamping mechanism 5 is shorter, the clamping of Material moving device can not clamp short tube, can not realize moving material, now, the short tube be clamped on the second formation clamping mechanism 5 is pushed in the clamping of Material moving device by short tube push rod 13 under the effect of short tube pusher cylinder 14, realization moves material, first formation clamping mechanism 4 unclamps afterwards, continue feeding, tubing shaping for front end clamps by the 3rd formation clamping mechanism 6 together with the first formation clamping mechanism 4, afterwards under the effect of shaping propulsive mechanism 8, tubing is broken by the first formation clamping mechanism 4, 3rd formation clamping mechanism 6 clips the shaping tubing in front end 17, F state as shown in Figure 5, horizontal inversion mechanism 7 action again afterwards, removes the 3rd formation clamping mechanism 6, and tubing front end drift 9 is moved to the predeterminated position in the first formation clamping mechanism 4 front, G state as shown in Figure 5, sawing sheet mechanism 1 continues sawing sheet afterwards, material is delivered to the clamping of the first formation clamping mechanism 4 place, the tubing that first formation clamping mechanism 4 clamps afterwards advances under the promotion of shaping propelling cylinder 8-2, carry out front end reaming-forming, horizontal inversion mechanism 7 continues action afterwards, the 3rd formation clamping mechanism 6 clipping front end shaping pipe is moved to the front of the shaping material jacking mechanism 3 of the second translation, simultaneously, material folding is again carried out in the front that second formation clamping mechanism 5 comes the first formation clamping mechanism 4, H state as shown in Figure 5, the shaping material jacking mechanism of second translation 3 is under the promotion of shaping propelling cylinder 8-2 afterwards, rear end reaming-forming is carried out to the tubing 17 on the 3rd formation clamping mechanism 6, shaping aftershaping propelling cylinder 8-2 resets, two ends shaping pipe on 3rd formation clamping mechanism 6 is then removed by the Material moving device of subsequent processing and is carried out following process, equally, when the pipe length on the 3rd formation clamping mechanism 6 is shorter, the clamping of Material moving device can not clamp short tube, can not realize moving material, now, the short tube be clamped on the 3rd formation clamping mechanism 6 is pushed in the clamping of Material moving device by short tube push rod 13 under the effect of short tube pusher cylinder 14, realization moves material, first formation clamping mechanism 4 unclamps afterwards, continue feeding, tubing shaping for front end clamps by the second formation clamping mechanism 5 together with the first formation clamping mechanism 4, afterwards under the effect of shaping propulsive mechanism 8, tubing is broken by the first formation clamping mechanism 4, secondth formation clamping mechanism 5 clips the shaping tubing in front end 18, I state as shown in Figure 5, sawing sheet mechanism 1 afterwards, the shaping material jacking mechanism 2 of first translation, the shaping material jacking mechanism 3 of second translation, first formation clamping mechanism 4, second formation clamping mechanism 5, 3rd formation clamping mechanism 6, horizontal inversion mechanism 7, shaping propulsive mechanism 8 repeats its above course of action, just the shaping batch production of tubing chambering at two ends can be realized, wherein, in above process, when reaming is carried out to energy one-time formed tubing, the shaping material jacking mechanism of first translation 2 and the shaping material jacking mechanism 3 of the second translation adopt forming punching head 15-2 to carry out one-shot forming reaming just can, but to can not one-time formed tubing (reaming-forming can cause pipe deformations) carry out reaming time, now need repeatedly reaming-forming, namely be that the shaping material jacking mechanism of the first translation 2 and the shaping material jacking mechanism 3 of the second translation are when carrying out rear end reaming-forming to such tubing, first to carry out pre-reaming with pre-stamping punch 15-1, replaced by transposition cylinder 12 pairs of drifts more afterwards, post forming reaming is carried out with forming punching head 15-2.After the above scheme of employing, compared to existing technology, the present invention is reliably rational in infrastructure, and the chambering at two ends that can realize tubing is well shaping, and operating efficiency is high, is a desirable metal pipe material two ends shaping mechanism, is worthy to be popularized.
The embodiment of the above is only the preferred embodiment of the present invention, not limits practical range of the present invention with this, therefore the change that all shapes according to the present invention, principle are done, all should be encompassed in protection scope of the present invention.
Claims (6)
1. a metal pipe material two ends shaping mechanism, it is characterized in that: it includes sawing sheet mechanism (1), the shaping material jacking mechanism of first translation (2), the shaping material jacking mechanism of second translation (3), first formation clamping mechanism (4), second formation clamping mechanism (5), 3rd formation clamping mechanism (6), horizontal inversion mechanism (7), shaping propulsive mechanism (8), wherein, sawing sheet mechanism (1), the shaping material jacking mechanism of first translation (2), the shaping material jacking mechanism of second translation (3), first formation clamping mechanism (4) is arranged on shaping propulsive mechanism (8) respectively, driven by this shaping propulsive mechanism (8) and realize integral translation propelling, simultaneously, on the direction of propulsion of shaping propulsive mechanism (8), the shaping material jacking mechanism of this first translation (2) and the shaping material jacking mechanism of the second translation (3) correspondence are located at the both sides of the first formation clamping mechanism (4), this sawing sheet mechanism (1) correspondence is located at the rear of the first formation clamping mechanism (4), and match with this first formation clamping mechanism (4), described horizontal inversion mechanism (7) correspondence on the direction of propulsion of shaping propulsive mechanism (8) is located at the front of the first formation clamping mechanism (4), and, the moving direction of this horizontal inversion mechanism (7) is vertical with the direction of propulsion of shaping propulsive mechanism (8), this horizontal inversion mechanism (7) is provided with tubing front end drift (9) acting on the upper metal pipe material of this first formation clamping mechanism (4), second formation clamping mechanism (5) and the 3rd formation clamping mechanism (6) are arranged on this horizontal inversion mechanism (7) respectively, and arrange along the moving direction of this horizontal inversion mechanism (7), driven by this horizontal inversion mechanism (7) and realize integral translation, simultaneously, this second formation clamping mechanism (5) matches with the shaping material jacking mechanism of the first translation (2), 3rd formation clamping mechanism (6) matches with the shaping material jacking mechanism of the second translation (3).
2. a kind of metal pipe material two ends according to claim 1 shaping mechanism, is characterized in that: described sawing sheet mechanism (1) includes cutter head (1-1) and for driving the cutter head motor (1-2) of this cutter head (1-1) cutting metal tubing.
3. a kind of metal pipe material two ends according to claim 1 shaping mechanism, it is characterized in that: the shaping material jacking mechanism of described first translation (2) or the shaping material jacking mechanism of the second translation (3) have included support body (10), can slide up and down slide block (11), the transposition cylinder (12) slided up and down for driving this slide block (11), for the short tube push rod (13) that short metal pipe material is released, for the short tube pusher cylinder (14) driving this short tube push rod (13) flexible, wherein, on the direction of propulsion of shaping propulsive mechanism (8), slide block (11) correspondence is located at the front of support body (10), short tube push rod (13) correspondence is located at the rear of slide block (11), the transposition cylinder (12) that cylinder body is vertically installed is provided with in the top of this slide block (11), the short tube pusher cylinder (14) that cylinder body level is installed is provided with at the rear of this short tube push rod (13), the piston rod of this transposition cylinder (12) down stretches out and is fixedly connected with the top of slide block (11), the piston rod of this short tube pusher cylinder (14) is released forward and is fixedly connected with one end of short tube push rod (13), the telescopic direction of this short tube push rod (13) is parallel to the direction of propulsion of shaping propulsive mechanism (8), and, this slide block (11) offers the through hole (18) passed for short tube push rod (13), simultaneously, this slide block (11) is provided with at least one the tubing rear end drift of the metal pipe material acted on corresponding shaping clamp system.
4. a kind of metal pipe material two ends according to claim 1 shaping mechanism, is characterized in that: described second formation clamping mechanism (5) and the 3rd formation clamping mechanism (6) drive translation by the horizontal transposition motor (7-1) of horizontal inversion mechanism (7).
5. a kind of metal pipe material two ends according to claim 1 shaping mechanism, it is characterized in that: described shaping propulsive mechanism (8) includes and moves integrally support (8-1) and the shaping propelling cylinder (8-2) for driving this to move integrally support (8-1) translation, wherein, described sawing sheet mechanism (1), the shaping material jacking mechanism of the first translation (2), the shaping material jacking mechanism of the second translation (3), the first formation clamping mechanism (4) are arranged on respectively to move integrally on support (8-1).
6. a kind of metal pipe material two ends according to claim 3 shaping mechanism, it is characterized in that: described tubing rear end drift has about two to arrange, be divided into pre-stamping punch (15-1) and forming punching head (15-2), further, slide block (11) upper for short tube push rod (13) through through hole (18) be located at these two tubing rear end drifts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310022801.3A CN103084842B (en) | 2013-01-22 | 2013-01-22 | Metal tubing two-end molding mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310022801.3A CN103084842B (en) | 2013-01-22 | 2013-01-22 | Metal tubing two-end molding mechanism |
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| CN103084842A CN103084842A (en) | 2013-05-08 |
| CN103084842B true CN103084842B (en) | 2015-03-25 |
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| CN201310022801.3A Active CN103084842B (en) | 2013-01-22 | 2013-01-22 | Metal tubing two-end molding mechanism |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103394593B (en) * | 2013-07-26 | 2014-09-10 | 温州康通环保科技有限公司 | Hydraulic drive type pipe end forming equipment for press pipe fittings |
| CN109261820A (en) * | 2018-08-10 | 2019-01-25 | 慈溪市天泽厨具有限公司 | A kind of feeding device of port machine |
| CN113579090B (en) * | 2021-07-31 | 2025-01-07 | 奥美森智能装备股份有限公司 | Chipless cutting pipe end machine and pipe fitting processing method |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1627302A1 (en) * | 1988-08-23 | 1991-02-15 | Ровенский Научно-Исследовательский Институт Технологии Машиностроения | Apparatus for conically expanding pipe ends |
| JP2685718B2 (en) * | 1994-10-12 | 1997-12-03 | 三桜工業株式会社 | Tube end molding equipment |
| JP2776796B2 (en) * | 1996-06-07 | 1998-07-16 | 株式会社三五 | Metal tube thickening processing method |
| DE69701615D1 (en) * | 1997-05-30 | 2000-05-11 | Macchine Curvatubi Crippa Agos | Pipe processing device |
| CN200960539Y (en) * | 2006-10-27 | 2007-10-17 | 张海勇 | Pipe-expanding mechanism |
| CN201371204Y (en) * | 2009-03-10 | 2009-12-30 | 冯培光 | Full-automatic double-head and single-head pipe end processing machine |
| CN101695731B (en) * | 2009-09-30 | 2011-09-07 | 张家港市明华机械制造有限公司 | Double-headed pipe end forming machine |
| CN102049439B (en) * | 2010-09-30 | 2012-08-29 | 黄伟明 | Pipe bending machine integrating straightening, cutting and three-dimensional numerical control pipe bending functions |
| CN202447546U (en) * | 2011-12-07 | 2012-09-26 | 东莞市嘉龙皮革机械有限公司 | Thick-walled round tube double-head heating necking device |
| CN203156353U (en) * | 2013-01-22 | 2013-08-28 | 黄伟明 | Metal pipe two-end forming mechanism |
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2013
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Effective date of registration: 20160105 Address after: 528226 Guangdong Province, Foshan City Nanhai Luocun North Industrial Park north side Patentee after: Huang Weiming Address before: 528226 Guangdong Province, Foshan City Nanhai Luocun North Industrial Park North Foshan arrow side Machinery Co. Ltd. Patentee before: Huang Weiming |