CN105057461A - Spin-forming mould for kettle body of sliver kettle - Google Patents
Spin-forming mould for kettle body of sliver kettle Download PDFInfo
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- CN105057461A CN105057461A CN201510515505.6A CN201510515505A CN105057461A CN 105057461 A CN105057461 A CN 105057461A CN 201510515505 A CN201510515505 A CN 201510515505A CN 105057461 A CN105057461 A CN 105057461A
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Abstract
The invention provides a spin-forming mould for a kettle body of a sliver kettle. The spin-forming mould comprises a mould rack, a kettle body internal supporting module arranged on the mould rack, a kettle body external forming module and a kettle body closing-in and rolling module, wherein the kettle body is arranged between the kettle body internal supporting module and the kettle body external forming module; and in a rotary process of the kettle body, the kettle body closing-in and rolling module can apply pressure to the kettle body, so that the kettle body completes closing-in. According to the spin-forming mould for the kettle body of the sliver kettle, the material consumption is reduced, the labor amount of an operator is reduced and the manufacturing cost can be effectively saved, and a manufactured product is light, uniform in thickness and high in yield.
Description
Technical field
The present invention relates to a kind of work pieces process mould, particularly relate to a kind of silver-colored kettle kettle body spin forming die, belong to miniature parts processing technique field.
Background technology
Traditional spinning is mainly used in shaping thin-walled hollow revolving parts, and it is fixed on the mould of spinning machine by dull and stereotyped or hollow blank, while blank is with lathe main axis, with spinning roller or roll rod and stress on blank, makes it the plastic deformation producing local.Under the feed motion of spinning roller and the rotary motion acting in conjunction of blank, make the plastic deformation of local expand to all surfaces of blank step by step, and be close to mould, produce a kind of rotoforming technique of metal hollow symmetrical casting.
Mould pressing as the technique processing method of a kind of advanced person and the ceramic base operation of Ancient Times in China similar.It is documented, China has just adopted spinning to make ceramic far away from abundant business's epoch of B.C. 3500 to 4000; So far the processing of China's ware still remains the feature of rotary pressure technology.This pottery develops into about tenth century the ninth day of lunar months and has been pregnant with metal conventional spinning technique, at that time metal (as silver, tin and copper etc.) thin plate is spun into the containers such as various bottle, tank, kettle and dish.There is spinning vestige on China's the Tang Dynasty surface of silver bowl, and this fully shows that the conventional spinning forming technique of China can trace back to the Tang Dynasty.
The most ancient spinning machine mainly manpower drives, and uses clavate instrument that blank is shaped.Drove by means of water conservancy and steam power again afterwards.Primary stage, be mainly used in the batch production of thin shell accessory; Because being limited to qualification and the muscle power of operator's technology, development is restricted.Present stage, make silver-colored kettle kettle body and adopt pure making by hand, per capita production capacity 4-5 part/moon, output is lower, and between goods, dimensional tolerance is large, and kettle body thickness is uneven.One piece ag material consumption is large, and cost is high, and kettle body is heavy, and yield rate is lower.
How to provide that a kind of output is high, cost is low, the spinning mold that goods are light and handy simultaneously, uniform wall thickness, yield rate are high is the technical barrier that current those skilled in the art need to solve.
Summary of the invention
The object of the present invention is to provide a kind of silver-colored kettle kettle body spin forming die, with solve exist in prior art yield poorly, dimensional tolerance is large between goods, kettle body wall thickness ununiformity, one piece material usage are large, kettle body is heavy, yield rate is lower technical problem.
Silver-colored kettle kettle body spin forming die provided by the invention comprises: the outside solid module of mould frame, the kettle body inner support module be arranged in described mould frame, kettle body and kettle body close up and roll up die block; Kettle body is arranged between described kettle body inner support module and the outside solid module of described kettle body; In described kettle body rotary course, described kettle body closing in volume die block can apply pressure to described kettle body and make this kettle body complete closing in.
Further, described kettle body inner support module comprises:
First rotating shaft, described first rotating shaft one end is fixedly connected in the frame of described silver-colored kettle kettle body spin forming die;
Kettle mouth supporting disk, described kettle mouth supporting disk is arranged on described first rotating shaft;
Fixed axis top board, described fixed axis top board is fixedly connected on the top of described first rotating shaft;
Eccentric wheel connecting plate, described eccentric wheel connecting plate to be fixedly connected on described first rotating shaft and inconsistent with described fixed axis top board surface, and described eccentric wheel connecting plate one end is provided with the second rotating shaft;
Interior eccentric wheel, described interior eccentric wheel top and described kettle mouth supporting disk surface inconsistent, bottom is connected with second rotating shaft of described eccentric wheel connecting plate one end.
In spinning process, be similar to pointwise distortion owing to being spun blank, therefore, wherein the defect such as any slag inclusion, interlayer, crackle, sand holes is easy to come out.Such spinning process also incidentally serves the effect of the automatic gauging to goods.
Further, the outside solid module of described kettle body is fixedly connected on the 3rd rotating shaft of described silver-colored kettle kettle body spin forming die.
Further, the outside solid module of described kettle body is bottom is plane, and the outside solid module side of this kettle body is the groove of arc-shaped.
Further, described kettle body closing in volume die block comprises closing in cutter, and described closing in cutter is arranged at spinning apparatus side and is used for kettle body oral area applying pressure, its pressurized being closed up.
Further, described kettle body closing in volume die block also comprises spinning cutter, and described spinning cutter is arranged at spinning apparatus side and is used for making it be out of shape to kettle body applying pressure.In spinning process, closing in cutter and spinning cutter are exerted pressure to blank pointwise, and contact area is little, and required general force of deformation is less, thus power consumption is reduced greatly.
Further, described kettle mouth supporting disk is connected with described first rotating shaft by two cover bearings, and being axially arranged with between sliding area at described first rotating shaft.
Further, described interior eccentric wheel is fixed on second rotating shaft of one end of described eccentric wheel connecting plate.
Preferably, described interior eccentric wheel is dome shape.Spinning can make goods reach higher dimensional accuracy and surface smoothness.In spinning process, interior eccentric wheel not only has the effect of calendering to the metal be spun, and also have smooth effect, therefore product surface is highly polished.
Beneficial effect of the present invention is: silver-colored kettle kettle body spin forming die provided by the invention is the moulding feature according to material, semi-finished product are installed in outside solid module and also rotate thereupon, select rational rotary pressure process parameter, the continuously feeding relative to outside solid module of interior eccentric wheel, rock deformation pressure is applied to the part of workpiece, makes blank pressurized and produce continuous pointwise distortion and the advanced plastic working mould of the one of shaping workpiece gradually.
The metal grain of semi-finished blank is under the effect of Three-direction deformation power, and offset along deformed area slide surface, the direction of each glide lamella of slide surface is consistent with deformation direction.Therefore, metallic fiber keeps continuous whole.Due to metal lattice structural strain, the intensity of spinning goods, hardness.Tensile strength and yield limit all increase.
Can make large diameter thin wall pipe and nearly all revolving body product such as spherical, hemispherical, ellipse, bent bus shape according to the ability of spinning machine, product range is very wide.
This silver-colored kettle kettle body spinning mold, can the equipment that uses of Simplified flowsheet greatly compared with plate stamping, and some need the product of Multi-step forming, and spinning once can create, and enormously simplify technological process.
This silver-colored kettle kettle body spin forming die drastically increases production capacity, and production capacity can reach 400-500 part/moon per capita, and every part dimensional tolerance is little, product uniform wall thickness, and the ag material consumption of one piece is little, and kettle body is light and handy, and yield rate is higher, has greatly saved cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the specific embodiment of the invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in detailed description of the invention or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Structural representation under the silver-colored kettle kettle body spin forming die die opening state that Fig. 1 provides for the embodiment of the present invention;
Structural representation under the silver-colored kettle kettle body spin forming die matched moulds state that Fig. 2 provides for the embodiment of the present invention.
List of parts in accompanying drawing representated by each label is as follows:
1, the first rotating shaft, 2, kettle mouth supporting disk, 3, interior eccentric wheel, 4, eccentric wheel connecting plate, 5, fixed axis top board, 6, the outside solid module of kettle body, 7, kettle body, 8, closing in cutter, 9, spinning cutter, the 10, the 3rd rotating shaft, the 11, second rotating shaft.
Detailed description of the invention
Be clearly and completely described technical scheme of the present invention below in conjunction with accompanying drawing, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In describing the invention, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " only for describing object, and can not be interpreted as instruction or hint relative importance.
In the description of invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation under silver-colored kettle kettle body spin forming die die opening state provided by the invention; Fig. 2 is the structural representation under silver-colored kettle kettle body spin forming die matched moulds state provided by the invention.Silver-colored kettle kettle body spin forming die provided by the invention, comprising: the outside solid module 6 of mould frame (not shown), the kettle body inner support module be arranged in mould frame, kettle body and kettle body close up and roll up die block; Kettle body 7 is arranged between kettle body inner support module and the outside solid module 6 of kettle body; In kettle body 7 rotary course, kettle body closing in volume die block can apply pressure to kettle body 7 and make this kettle body 7 complete closing in.Kettle body inner support module plays the effect at inner support kettle body, the profile of this supporting module i.e. the interior shape of output products.The working face forming each parts of inner support module should have certain precision, and has good luminosity.In structure, surface configuration and size etc. that inner support module and kettle body 7 participate in crushed element adapt.The outside solid module of kettle body plays the effect making kettle body fix shaping.
During work, kettle body 7 is put into the profiling groove of the outside solid module 6 of kettle body, adjust smooth-going, then inner support module is slided into the bottom of kettle body 7, make to be close to mutually between the outside solid module 6 of fixed axis top board 5, kettle body 7, kettle body.After fixing tailstock, select rational rotary pressure process parameter.After starting device, kettle body 7 and kettle body outside solid module 6 synchronous rotary, closing in cutter 8, spinning cutter 9 apply rock deformation pressure to the fraction of kettle body 7 successively, make kettle body 7 pressurized and produce continuous pointwise distortion and shaping gradually.When carrying out spinning to kettle body 7, first by edge preformed, to prevent kettle body 7 wrinkling in spinning process, and work efficiency should be improved.The outer rim of kettle body 7 should be neatly smooth, is conducive to like this preventing crack at edge in spinning.
Silver-colored kettle kettle body spin forming die provided by the invention is the moulding feature according to material, kettle body 7 is installed in the outside solid module 6 of kettle body and also rotates thereupon, select rational rotary pressure process parameter, interior eccentric wheel 3 and the relative feeding continuously of the outside solid module 6 of kettle body, rock deformation pressure is applied to the part of workpiece, makes blank pressurized and produce continuous pointwise distortion and the advanced plastic working device of the one of shaping workpiece gradually.In spinning process, closing in cutter 8 and the 9 pairs of blank pointwises of spinning cutter are exerted pressure, and contact area is little, and required general force of deformation is less, thus power consumption is reduced greatly.The metal grain of semi-finished blank is under the effect of Three-direction deformation power, and offset along deformed area slide surface, the direction of each glide lamella of slide surface is consistent with deformation direction.Therefore, metallic fiber keeps continuous whole.Due to metal lattice structural strain, the intensity of spinning goods, hardness.Tensile strength and yield limit all increase.Spinning can make goods reach higher dimensional accuracy and surface smoothness.In spinning process, spinning roller not only has the effect of calendering to the metal be spun, and also have smooth effect, therefore product surface is highly polished.Can make large diameter thin wall pipe and nearly all revolving body product such as spherical, hemispherical, ellipse, bent bus shape according to the ability of spinning machine, product range is very wide.In spinning process, be similar to pointwise distortion owing to being spun blank, therefore, wherein the defect such as any slag inclusion, interlayer, crackle, sand holes is easy to come out.Such spinning process also incidentally serves the effect of the automatic gauging to goods.This silver-colored kettle kettle body spin forming die, can the equipment that uses of Simplified flowsheet greatly compared with plate stamping, and some need the product of Multi-step forming, and spinning once can create, and enormously simplify technological process.
This silver-colored kettle kettle body spin forming die drastically increases production capacity, and production capacity can reach 400-500 part/moon per capita, and every part dimensional tolerance is little, product uniform wall thickness, and the ag material consumption of one piece is little, and kettle body is light and handy, and yield rate is higher, has greatly saved cost.
In specific implementation process, improve further above-described embodiment, kettle body inner support module comprises: first rotating shaft 1, first rotating shaft 1 one end is fixedly connected in the frame of silver-colored kettle kettle body spin forming die.First rotating shaft 1 is driven by motor, and various kettle body inner support module is fixed on the first rotating shaft 1 according to necessarily putting in order.
Inner support module also comprises kettle mouth supporting disk 2, and kettle mouth supporting disk 2 is arranged on the first rotating shaft 1.Kettle mouth supporting disk 2 is disc-shaped structure, can rotate on rotating shaft 1, and its effect supports silver-colored Hu Hukou, makes its crimping that closes up.
Inner support module also comprises fixed axis top board 5, and fixed axis top board 5 is fixed on the top of the first rotating shaft 1.The working face of fixed axis top board 5 should be large as far as possible, with increasing friction force square, prevents workpiece from relatively rotating.
Inner support module also comprises eccentric wheel connecting plate 4, and eccentric wheel connecting plate 4 to be fixed on the first rotating shaft 1 and inconsistent with fixed axis top board 5 surface, and its Main Function is to give interior eccentric wheel 3 one fulcrums.Eccentric wheel connecting plate 4 one end is provided with the second rotating shaft 11, second rotating shaft 11 is used for supporting interior eccentric wheel 3, in driving, eccentric wheel 3 rotates, interior eccentric wheel 3 keeps localized contact with kettle body 7 inner surface, contact area is little, make kettle body 7 under the External Force Acting of spinning cutter 9, only need very little active force local deformation will occur, thus power consumption is reduced greatly.
Inner support module also comprises interior eccentric wheel 3.Interior eccentric wheel 3, as the term suggests eccentric wheel just refers to that this center of taking turns is not on the point of rotation, and what refer generally to generation is exactly circular wheel, when circle does not have the central rotation around oneself, has just become eccentric wheel.Interior eccentric wheel 3 top and kettle mouth supporting disk 2 surface inconsistent, bottom is connected with second rotating shaft 11 of eccentric wheel connecting plate 4 one end.
In spin-forming procedure, kettle body 7 is put into the profiling hole of the outside solid module 6 of kettle body, adjust smooth-going, the inner support module comprising fixed axis top board 5 is being slided into the bottom of kettle body 7, make the outside solid module 6 of fixed axis top board 5, kettle body 7 and kettle body bonded to each other, and ensure enough thrusts, rotate relative to fixed axis top board 5 in order to prevent kettle body 7;
Above-described embodiment improves further, and the outside solid module 6 of kettle body is fixedly connected on the 3rd rotating shaft 10 of silver-colored kettle kettle body spin forming die.
Above-described embodiment improves further, the outside solid module 6 of kettle body for bottom be plane, and this solid module side, kettle body outside is the groove of arc-shaped.The outside solid module 6 of kettle body generally adopts middle, high-carbon manufacture.In order to increase wearability, sometimes need to carry out modifier treatment, but hardness should not be too high.
During starting device, the outside solid module 6 of kettle body and kettle body 7 synchronous axial system, and active force is applied to kettle body 7 make it be out of shape.During spinning, the appropriate outside solid module 6 of jug body that adds contributes to increasing the stability of being out of shape with the rotating speed of kettle body 7, and the rotating speed of kettle body 7 is relevant with the rigidity of wall thickness, diameter and equipment, and conventional peripheral speed represents.
Above-described embodiment improves further, and kettle body closing in volume die block comprises closing in cutter 8, and closing in cutter 8 is arranged at spinning apparatus side and is used for kettle body oral area applying pressure, its pressurized being closed up.
Above-described embodiment improves further, kettle body closing in volume die block also comprises spinning cutter 9, spinning cutter 9 is arranged at silver-colored kettle kettle body spin forming die side and is used for applying pressure to kettle body and makes it be out of shape, and kettle power of experiencing produces stretcher strain, presents the strain regime that axial elongation, wall thickness are thinning.
Above-described embodiment improves further, and kettle mouth supporting disk 2 is connected with the first rotating shaft 1 by two cover bearings, and what make kettle mouth supporting disk 2 fix on the first rotating shaft 1 like this is more firm, effectively can reduce frictional force by using bearing.Kettle mouth supporting disk 2 can rotate and axially have between certain sliding area at the first rotating shaft 1, and the concrete scope between sliding area is 15mm.Track when kettle mouth supporting disk 2 moves makes its axis be parallel to input semi-finished product 7 surface all the time, and keeps and input among semi-finished product 7 are in and contact completely.
Above-described embodiment improves further, and eccentric wheel connecting plate 4 is screwed on the first rotating shaft 1, makes the connection between eccentric wheel connecting plate 4 and the first rotating shaft 1 more firm.Eccentric wheel connecting plate 4 one end is provided with the second rotating shaft 11, this rotating shaft is used for supporting interior eccentric wheel 3, in driving, eccentric wheel 3 rotates, interior eccentric wheel 3 keeps localized contact with kettle body 7 inner surface, contact area is little, make kettle body 7 under the External Force Acting of spinning cutter 9, only need very little active force local deformation will occur, thus power consumption is reduced greatly.
Above-described embodiment improves further, and interior eccentric wheel 3 is fixed on second rotating shaft 11 of one end of eccentric wheel connecting plate 4.Interior eccentric wheel 3 can rotation on second rotating shaft 11 of one end of eccentric wheel connecting plate 4, and in spinning process, interior eccentric wheel 3 not only has the effect of calendering to the kettle body 7 be spun, and also has smooth effect, is conducive to the surface smoothness improving goods.Not only there is rolling friction between interior eccentric wheel 3 and kettle body 7, and have sliding friction, and have certain heat to produce, so in spinning process, need sufficient Cooling and Lubricator etc.
Improve further above-described embodiment, interior eccentric wheel 3 is dome shape.The working face of interior eccentric wheel 3 is circular arcs, is therefore called circular arc type spinning roller.Interior eccentric wheel 3 is designed to give kettle body 7 in the process that dome shape can occur bending and deformation at kettle body 7 and supports, and makes the effective flexural deformation of silver-colored kettle kettle body 7.Interior eccentric wheel 3 contacts with the outer surface of kettle body 7 and subjects violent friction, therefore interior eccentric wheel 3 should be selected high-quality tool steel or contain the manufacture of vanadium high-speed steel, be quenched into extreme hardness and be polished to mirror status, interior eccentric wheel 3 also should have enough intensity, rigidity, hardness, wearability, reasonably planform, dimensional accuracy and bright and clean working surface.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a silver-colored kettle kettle body spin forming die, is characterized in that, comprising: the outside solid module of mould frame, the kettle body inner support module be arranged in described mould frame, kettle body and kettle body close up and roll up die block; Kettle body is arranged between described kettle body inner support module and the outside solid module of described kettle body; In described kettle body rotary course, described kettle body closing in volume die block can apply pressure to described kettle body and make this kettle body complete closing in.
2. silver-colored kettle kettle body spin forming die according to claim 1, is characterized in that, described kettle body inner support module comprises:
First rotating shaft, described first rotating shaft one end is fixedly connected in the frame of described silver-colored kettle kettle body spin forming die;
Kettle mouth supporting disk, described kettle mouth supporting disk is arranged on described first rotating shaft;
Fixed axis top board, described fixed axis top board is fixedly connected on the top of described first rotating shaft;
Eccentric wheel connecting plate, described eccentric wheel connecting plate to be fixedly connected on described first rotating shaft and inconsistent with described fixed axis top board surface, and described eccentric wheel connecting plate one end is provided with the second rotating shaft;
Interior eccentric wheel, described interior eccentric wheel top and described kettle mouth supporting disk surface inconsistent, bottom is connected with second rotating shaft of described eccentric wheel connecting plate one end.
3. silver-colored kettle kettle body spin forming die according to claim 1, is characterized in that, the outside solid module of described kettle body is fixedly connected on the 3rd rotating shaft of described spinning mold.
4. silver-colored kettle kettle body spin forming die according to claim 3, is characterized in that, the outside solid module of described kettle body is bottom is plane, and the outside solid module side of this kettle body is the groove of arc-shaped.
5. silver-colored kettle kettle body spin forming die according to claim 1, is characterized in that, described kettle body closing in volume die block comprises closing in cutter, and described closing in cutter is arranged at spinning apparatus side and is used for kettle body oral area applying pressure, its pressurized being closed up.
6. silver-colored kettle kettle body spin forming die according to claim 1, is characterized in that, described kettle body closing in volume die block also comprises spinning cutter, and described spinning cutter is arranged at spinning apparatus side and is used for making it be out of shape to kettle body applying pressure.
7. silver-colored kettle kettle body spin forming die according to claim 2, is characterized in that, described kettle mouth supporting disk is connected with described first rotating shaft by two cover bearings, and being axially arranged with between sliding area at described first rotating shaft.
8. silver-colored kettle kettle body spin forming die according to claim 2, it is characterized in that, described eccentric wheel connecting plate is screwed and is connected on described first rotating shaft.
9. silver-colored kettle kettle body spin forming die according to claim 2, it is characterized in that, described interior eccentric wheel is fixedly connected on second rotating shaft of one end of described eccentric wheel connecting plate.
10. silver-colored kettle kettle body spin forming die according to claim 9, it is characterized in that, described interior eccentric wheel is dome shape.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510515505.6A CN105057461B (en) | 2015-08-20 | 2015-08-20 | A kind of silver-colored kettle bottle body spin forming die |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510515505.6A CN105057461B (en) | 2015-08-20 | 2015-08-20 | A kind of silver-colored kettle bottle body spin forming die |
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| CN105057461A true CN105057461A (en) | 2015-11-18 |
| CN105057461B CN105057461B (en) | 2017-08-29 |
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| CN201510515505.6A Expired - Fee Related CN105057461B (en) | 2015-08-20 | 2015-08-20 | A kind of silver-colored kettle bottle body spin forming die |
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| CN105642786A (en) * | 2016-04-12 | 2016-06-08 | 宜兴瑞鑫贵金属艺术品有限公司 | Manufacturing mold and method of precious metal Gongding pot |
| CN107649562A (en) * | 2017-10-01 | 2018-02-02 | 深圳市普耐光电科技有限公司 | A kind of spinning machine |
| CN108202120A (en) * | 2017-12-10 | 2018-06-26 | 丹寨县国春银饰有限责任公司 | A kind of fine silver integrated kettle specification production method |
| CN109746642A (en) * | 2019-01-31 | 2019-05-14 | 张广韶 | A kind of iron contracted payment pot manufacturing process |
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| CN108202120A (en) * | 2017-12-10 | 2018-06-26 | 丹寨县国春银饰有限责任公司 | A kind of fine silver integrated kettle specification production method |
| CN109746642A (en) * | 2019-01-31 | 2019-05-14 | 张广韶 | A kind of iron contracted payment pot manufacturing process |
| CN109746642B (en) * | 2019-01-31 | 2021-04-02 | 张广韶 | Iron-clad silver kettle manufacturing process |
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|---|---|
| CN105057461B (en) | 2017-08-29 |
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