CN108145061B - Thin type chain pearl moulding process - Google Patents
Thin type chain pearl moulding process Download PDFInfo
- Publication number
- CN108145061B CN108145061B CN201711085158.3A CN201711085158A CN108145061B CN 108145061 B CN108145061 B CN 108145061B CN 201711085158 A CN201711085158 A CN 201711085158A CN 108145061 B CN108145061 B CN 108145061B
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- groove
- pipe
- molding
- forming tank
- mold
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21L—MAKING METAL CHAINS
- B21L11/00—Making chains or chain links of special shape
- B21L11/12—Forming bead chains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
A kind of thin type chain pearl moulding process, the outer casing forming for chain pearl, comprising the following steps: (1), melt gold, the forming of (2), trombone slide；(3), seamless welding forms hollow pipe；(4), trombone slide forms；(5), preliminary molding, hollow pipe is fixed on clamping device, it is molded on the first mold by clamping device clamping hollow pipe, form cydariform pipe, (6), secondary mould pressing, by step (5), treated that cydariform pipe is fixed on clamping device, is molded on the second mold by clamping device clamping hollow pipe；(7), it is surface-treated, polishes spherical pipe surface, spherical pipe surface is made to become smooth；(8), Pipe Cutting: the present invention completes the first one-step forming of bulb tube by being molded for the first time, in secondary mould pressing, difference by spherical radius is gradually reduced forms type groove and is processed, and then complete the molding of thin type chain pearl, in the case where guaranteeing overall volume, the weight for effectively reducing chain pearl reduces the price of product.
Description
Technical field
The present invention relates to a kind of gold ornament moulding process more particularly to thin type chain pearl moulding process.
Background technique
Modern life increased quality, so other than selecting suitable proper clothes in daily life, in order to more
Different ornaments can be worn to show the taste of itself and be used as with other people and distinguish by highlighting personal characteristic, and ornament
It is many kinds of, it is more commonly used, includes the ornaments such as ring, necklace, earrings, bracelet.By the collocation of ornament
To promote personal style and whole visual sense of beauty.
Existing ornament chain pearl is developed towards more and more thinner direction, and manufacturer is by increasing chain pearl overall volume, subtracting
The production method of the thickness of chainlet pearl not only effectively improves the visual effect of chain pearl, moreover, reducing the weight of chain pearl, and then drops
The cost of low chain pearl increases selling point, however, existing ornament chain pearl is developed towards more and more thinner direction, but by technique
Influence, the thickness of product still cannot do too thin, otherwise product during the pressing process, the case where product will appear fracture,
Scrap of the product is in turn resulted in, the manufacturing cost of product is increased.
Summary of the invention
Based on this, it is necessary to aiming at the shortcomings in the prior art, provide thin type chain pearl moulding process.
A kind of thin type chain pearl moulding process is arranged inside the chain pearl in hollow structure, chain for the outer casing forming of chain pearl
The both ends of pearl are equipped with and are connected with inside through-hole, and the chain pearl is pearl shape, the outer diameter size of chain pearl from middle part to both ends gradually
Shrink, correspondingly, the inner space of the chain pearl is equally gradually tapered up from middle part to both ends, thin type chain pearl moulding process include with
Lower step:
(1), gold is melted, block-like gold is melted, when melting gold, tungsten metal material is added, being allowed to gold becomes hard gold；
(2), trombone slide shapes, and forms hollow tube；
(3), the tube body is seamlessly connected by seamless welding, forms hollow pipe；
(4), trombone slide forms, and hollow pipe is put and carries out trombone slide in drawbench, makes hollow pipe Uniform Tension, after being completely stretched,
The thickness of hollow tube wall is thinning；
(5), preliminary molding, hollow pipe is fixed on clamping device, by clamping device clamping hollow pipe in the first mold
On be molded, formed cydariform pipe, the outer surface of the cydariform pipe forms several bulbous protrusions interconnected, and cydariform pipe
On bulbous protrusion shape size it is consistent；
First mold includes cope plate, upper cores, lower template, lower mode and fourth drive device, the upper cores
It is installed in cope plate bottom, the lower mode is installed in lower template, and upper cores and lower mode are holding up direction in being oppositely arranged,
The fourth drive device, which drives, to be molded or is opened between upper cores, lower mode；The bottom surface of the upper cores is equipped with to be distributed side by side
Forming tank, the orientation of the forming tank of upper cores is consistent with the direction fed when molding, and the cell wall of the forming tank is in ball
Face setting, the spherical radius of forming tank are R, and the mode between adjacent twenty percent type groove is equipped with a groove, and the groove depth of groove is L；
The top surface of the lower mode is again provided with the forming tank being distributed side by side, and the forming tank of the upper cores is in structure and on lower mode
Forming tank it is consistent, after molding, surrounded between upper cores and the forming tank of lower mode molding space, the groove and lower die of upper cores
Circular through hole is encircled between the groove of benevolence；The bottom surface both side of the upper cores is additionally provided with guide groove, the guide groove and forming tank phase
It is intercommunicated；
When processing, clamping device clamping hollow pipe, which protrudes into the first mold, to be molded, and fourth drive device drives upper mold
Mode die sinking, molding under Renhe, every completion mold, after mold-break operations, and clamping device drives hollow pipe feeding further along, and
The angle [alpha] of hollow pipe is rotated, wherein for α value less than 30 °, the molding slot number in upper cores is that the product of T, α and T are greater than 360 °,
Each spherical protuberances on cydariform pipe are successively processed by forming tank；
(6), secondary mould pressing, by step (5), treated that cydariform pipe is fixed on clamping device, is clamped and is roused by clamping device
Shape pipe is molded on the second mold；
Second mold includes male template, male die core, caster, mother module core and the 5th driving device, the male die core
It is installed in male template bottom, the mother module core is installed on caster, and male die core and mother module core are holding up direction in being oppositely arranged,
5th driving device, which drives, to be molded or is opened between male die core, mother module core；The bottom surface of the male die core is equipped with to be distributed side by side
Forming tank, the orientation of the forming tank of male die core is consistent with the direction fed when molding, and the bottom surface of the male die core is also set
There is guide groove, the guide groove and forming tank are interconnected；
The spherical setting of the cell wall of the forming tank, the forming tank are divided into three groups, wherein first group of molding groove groove wall
Spherical radius be R, the spherical radius of second group of molding groove groove wall is r, and the spherical radius of third composing type groove groove wall is M,
It is sequentially increased in the size of R, r, M value, and the mode portion between adjacent twenty percent type groove is equipped with a groove, wherein third composition
Groove groove depth between type groove is L, and the groove groove depth between the second composition type groove is N, the groove slot between the first composition type groove
Depth is A, and wherein L, N, A value are sequentially increased；After molding, molding space, male model are surrounded between male die core and the forming tank of mother module core
Circular through hole is encircled between the groove of benevolence and the groove of mother module core；
When processing, clamping device clamping cydariform pipe, which protrudes into the second mold, to be molded, and the 5th driving device drives male model
The die sinking of Renhe mother module core, molding, every completion mold, after mold-break operations, and clamping device drives the feeding further along of cydariform pipe, and
The angle [alpha] of rotating drum-shaped pipe, wherein α value is not more than 60 °, and every composing type slot number is that the product of Y, α and Y are greater than in upper cores
360 °, each spherical protuberances on cydariform pipe are successively processed by forming tank；
(7), it is surface-treated, polishes spherical pipe surface, spherical pipe surface is made to become smooth；
(8), Pipe Cutting carries out Pipe Cutting to bulb tube, excision round protrusion after the composition type groove processing of the second mould group three:
In conclusion the beneficial effect of thin type chain pearl moulding process of the present invention is: in molding, it is carried out in two steps, by
The first one-step forming of bulb tube is completed in first molding, and in secondary mould pressing, the forming tank on the second mold is divided into several groups, and along
Spherical radius is gradually reduced in the forming tank of feedstock direction, difference group, and gradually increases the groove depth of groove, completes the ball being tentatively molded
In secondary mould pressing, the difference by spherical radius is gradually reduced form type groove and is processed shape pipe, so completion thin type chain pearl at
Type effectively reduces the weight of chain pearl in the case where guaranteeing overall volume, reduces the price of product, meets the consumer spending heart
Reason increases selling point, and then improves the economic benefit of enterprise.
Detailed description of the invention
Fig. 1 is the front view for inventing a kind of chain pearl that thin type chain pearl moulding process is processed.
Fig. 2 is a kind of structural schematic diagram of the upper cores of the second mold used by inventing thin type chain pearl moulding process.
A kind of structural schematic diagram of the Fig. 3 to invent thin type chain pearl moulding process molding cydariform pipe in step (5).
Specific embodiment
In order to which the objects, technical solutions and advantages of invention are more clearly understood, with reference to the accompanying drawings and embodiments, to hair
It is bright to be further elaborated.It should be appreciated that specific embodiment described herein is not used to limit only to explain invention
Fixed invention.
As shown in Figure 1, the present invention provides a kind of thin type chain pearl moulding process, for the outer casing forming of chain pearl 10, the chain
It is arranged inside pearl 10 in hollow structure, the both ends of chain pearl 10, which are equipped with, is connected with inside through-hole 11, and the chain pearl 10 is pearl shape,
The outer diameter size of chain pearl 10 is gradually tapered up from middle part to both ends, correspondingly, the inner space of the chain pearl 10 equally from middle part to
Both ends gradually taper up, thin type chain pearl moulding process the following steps are included:
(1), gold is melted, block-like gold is melted, when melting gold, tungsten metal material is added, being allowed to gold becomes hard gold, is added
When tungsten metal material, it is added according in per kilogram gold in the ratio of 1~2 gram of tungsten metal material；
(2), step (1) treated gold bullion tabletting is formed gold plaque, by the gold plaque after mold by preliminarily forming
Bend to the apertured hollow tube of tool；
(3), the tube body is seamlessly connected by seamless welding, forms hollow pipe；
(4), trombone slide forms, and hollow pipe is put and carries out trombone slide in drawbench, makes hollow pipe Uniform Tension, after being completely stretched,
The thickness of hollow tube wall is thinning；
(5), preliminary molding, hollow pipe is fixed on clamping device, by clamping device clamping hollow pipe in the first mold
On be molded, form cydariform pipe 20, the outer surface of the cydariform pipe 20 forms several bulbous protrusions 21 interconnected, and
The shape size of bulbous protrusion 21 on cydariform pipe 20 is consistent；The clamping device includes rack, first driving device, is installed in
The second driving device in first driving device is installed in the third driving device of the second driving device and is installed in third driving
Fixture on device, the first driving device drive the second driving device, third driving device and fixture holding up direction fortune
Dynamic, second driving device drives third driving device and fixture to move in the horizontal direction, and the fixture is for clamping cydariform
The initial end of pipe 20, the third driving device drive fixture rotation, adjust profile angle of the cydariform pipe 20 on the first mold；
First mold includes cope plate, upper cores, lower template, lower mode and fourth drive device, the upper cores
It is installed in cope plate bottom, the lower mode is installed in lower template, and upper cores and lower mode are holding up direction in being oppositely arranged,
The fourth drive device, which drives, to be molded or is opened between upper cores, lower mode.The bottom surface of the upper cores is equipped with to be distributed side by side
Forming tank, the orientation of the forming tank of upper cores is consistent with the direction fed when molding, and the cell wall of the forming tank is in ball
Face setting, the spherical radius of forming tank are R, and the mode between adjacent twenty percent type groove is equipped with a groove, and the groove depth of groove is L.
The top surface of the lower mode is again provided with the forming tank being distributed side by side, and the forming tank of the upper cores is in structure and on lower mode
Forming tank it is consistent, after molding, surrounded between upper cores and the forming tank of lower mode molding space, the groove and lower die of upper cores
Circular through hole 11 is encircled between the groove of benevolence.The bottom surface of the upper cores is additionally provided with the guide groove imported for bulb tube, described
Guide groove and forming tank are interconnected；
When processing, clamping device clamping cydariform pipe 20, which protrudes into the first mold, to be molded, in fourth drive device drive
Mode and the die sinking of lower mode, molding, every completion mold, after mold-break operations, and clamping device drives hollow pipe feeding further along,
And the angle [alpha] of hollow pipe is rotated, wherein for α value less than 30 °, the molding slot number in upper cores is that the product of T, α and T are greater than
360 °, each spherical protuberances 21 on cydariform pipe 20 are successively processed by forming tank；
(6), secondary mould pressing, by step (5), treated that cydariform pipe is fixed on clamping device, is clamped and is roused by clamping device
Shape pipe 20 is molded on the second mold, and the clamping device equally includes rack, first driving device, the second driving dress
Set, third driving device and fixture, the third driving device drives fixture rotation, adjust cydariform pipe on the second mold at
Type angle；
Second mold includes male template, male die core 30, caster, mother module core and the 5th driving device, the male model
Benevolence 30 is installed in male template bottom, and the mother module core is installed on caster, and male die core 30 and mother module core are holding up direction in phase
To setting, the 5th driving device, which drives, to be molded or is opened between male die core, mother module core.The bottom surface of the male die core 30 is equipped with
The orientation of the forming tank 40 being distributed side by side, the forming tank 40 of male die core 30 is consistent with the direction fed when molding, the public affairs
The bottom surface of mode 30 is additionally provided with guide groove 50, and the guide groove 50 is interconnected with forming tank 40.
The spherical setting of cell wall of the forming tank 40, the forming tank 40 are divided for three groups (41,42,43), wherein first
The spherical radius of 41 cell wall of forming tank of group is R, and the spherical radius of second group of 42 cell wall of forming tank is r, and third forms type groove
The spherical radius of 43 cell walls is M, is sequentially increased in the size of R, r, M value (in this implementation, be divided into 0.1mm), adjacent two
Mode portion between forming tank 40 is equipped with a groove 60, wherein and it is L that third, which forms 60 groove depth of groove between type groove 31, second
Form type groove 42 between 60 groove depth of groove be N, first composition type groove 33 between 60 groove depth of groove be A, wherein L, N, A value according to
It is secondary to increase (be divided into 0.15mm).After molding, molding space, male die core 30 are surrounded between male die core 30 and the forming tank of mother module core
Groove 60 and the groove of mother module core between be encircled into circular through hole.
When processing, clamping device clamping cydariform pipe 20, which protrudes into the second mold, to be molded, and the 5th driving device drives public
Mode and mother module core die sinking, molding, every completion mold, after mold-break operations, and clamping device drives the feeding further along of cydariform pipe,
And the angle [alpha] of rotating drum-shaped pipe 20, wherein α value is not more than 60 °, and every composing type slot number is that the product of Y, α and Y are big in upper cores
It is successively processed by forming tank in each spherical protuberances on 360 °, cydariform pipe.
(7), it is surface-treated, polishes spherical pipe surface, spherical pipe surface is made to become smooth；
(8), Pipe Cutting carries out Pipe Cutting, excision round protrusion after the composition type groove processing of the second mould group three to bulb tube；
In conclusion the beneficial effect of thin type chain pearl moulding process of the present invention is: in molding, it is carried out in two steps, by
The first one-step forming of bulb tube is completed in first molding, and in secondary mould pressing, the forming tank on the second mold is divided into several groups, and along
Spherical radius is gradually reduced in the forming tank of feedstock direction, difference group, and gradually increases the groove depth of groove, completes the ball being tentatively molded
Shape pipe forms type groove in secondary mould pressing, by spherical radius difference is gradually reduced and is processed, so complete thin type chain pearl 10 at
Type effectively reduces the weight of chain pearl 10 in the case where guaranteeing overall volume, reduces the price of product, meets consumer spending
Psychology increases selling point, and then improves the economic benefit of enterprise.
The several embodiments invented above described embodiment only expresses, the description thereof is more specific and detailed, but not
It can therefore be construed as limiting the scope of the patent.It should be pointed out that for those of ordinary skill in the art,
Under the premise of not departing from inventive concept, various modifications and improvements can be made, these belong to the protection scope of invention.Cause
This, the scope of protection shall be subject to the appended claims for patent of invention.
Claims (3)
1. a kind of thin type chain pearl moulding process is arranged inside the chain pearl in hollow structure, chain pearl for the outer casing forming of chain pearl
Both ends be equipped with and be connected with inside through-hole, the chain pearl is pearl shape, and the outer diameter size of chain pearl is gradually received from middle part to both ends
Contracting, correspondingly, the inner space of the chain pearl is equally gradually tapered up from middle part to both ends, which is characterized in that the molding of thin type chain pearl
Technique the following steps are included:
(1), gold is melted, block-like gold is melted, when melting gold, tungsten metal material is added, being allowed to gold becomes hard gold；
(2), trombone slide shapes, and forms hollow tube；
(3), the tube body is seamlessly connected by seamless welding, forms hollow pipe；
(4), trombone slide forms, and hollow pipe is put and carries out trombone slide in drawbench, makes hollow pipe Uniform Tension, hollow after being completely stretched
The thickness of tube wall is thinning；
(5), preliminary molding, hollow pipe is fixed on clamping device, enterprising in the first mold by clamping device clamping hollow pipe
Row molding, forms cydariform pipe, and the outer surface of the cydariform pipe forms several bulbous protrusions interconnected, and on cydariform pipe
The shape size of bulbous protrusion is consistent；
First mold includes cope plate, upper cores, lower template, lower mode and fourth drive device, the upper cores installing
In cope plate bottom, the lower mode is installed in lower template, and upper cores and lower mode are holding up direction in being oppositely arranged, described
Fourth drive device, which drives, to be molded or is opened between upper cores, lower mode；The bottom surface of the upper cores be equipped be distributed side by side at
The orientation of type groove, the forming tank of upper cores is consistent with the direction fed when molding, and the cell wall of the forming tank is spherical to be set
It sets, the spherical radius of forming tank is R, and the mode between adjacent twenty percent type groove is equipped with a groove, and the groove depth of groove is L；It is described
The top surface of lower mode is again provided with the forming tank being distributed side by side, the forming tank of the upper cores in structure on lower mode at
Type groove is consistent, and after molding, molding space, the groove of upper cores and lower mode are surrounded between upper cores and the forming tank of lower mode
Circular through hole is encircled between groove；The bottom surface both side of the upper cores is additionally provided with guide groove, and the guide groove is mutually interconnected with forming tank
It is logical；
When processing, clamping device clamping hollow pipe is protruded into the first mold and is molded, fourth drive device drive upper cores and
Lower mode die sinking, molding, every completion mold, after mold-break operations, and clamping device drives hollow pipe feeding further along, and rotates
The angle [alpha] of hollow pipe, wherein α value is less than 30 °, and the molding slot number in upper cores is that the product of T, α and T are greater than 360 °, cydariform
Each spherical protuberances on pipe are successively processed by forming tank；
(6), secondary mould pressing, by step (5), treated that cydariform pipe is fixed on clamping device, clamps cydariform pipe by clamping device
It is molded on the second mold；
Second mold includes male template, male die core, caster, mother module core and the 5th driving device, the male die core installing
In male template bottom, the mother module core is installed on caster, and male die core and mother module core are holding up direction in being oppositely arranged, described
5th driving device, which drives, to be molded or is opened between male die core, mother module core；The bottom surface of the male die core be equipped be distributed side by side at
The orientation of type groove, the forming tank of male die core is consistent with the direction fed when molding, and the bottom surface of the male die core, which is additionally provided with, leads
Slot, the guide groove and forming tank are interconnected；
The spherical setting of the cell wall of the forming tank, the forming tank are divided into three groups, wherein the ball of first group of molding groove groove wall
Radius surface is R, and the spherical radius of second group of molding groove groove wall is r, and the spherical radius of third composing type groove groove wall is M, in
R, the size of r, M value is sequentially increased, and the mode portion between adjacent twenty percent type groove is equipped with a groove, wherein third forms type groove
Between groove groove depth be L, second composition type groove between groove groove depth be N, first composition type groove between groove groove depth be
A, wherein L, N, A value are sequentially increased；After molding, molding space is surrounded between male die core and the forming tank of mother module core, male die core
Circular through hole is encircled between groove and the groove of mother module core；
When processing, clamping device clamping cydariform pipe is protruded into the second mold and is molded, the 5th driving device drive male die core and
Mother module core die sinking, molding, every completion mold, after mold-break operations, and clamping device drives the feeding further along of cydariform pipe, and rotates
The angle [alpha] of cydariform pipe, wherein α value is not more than 60 °, and every composing type slot number is that the product of Y, α and Y are greater than 360 ° in upper cores,
Each spherical protuberances on cydariform pipe are successively processed by forming tank；
(7), it is surface-treated, polishes spherical pipe surface, spherical pipe surface is made to become smooth；
(8), Pipe Cutting carries out Pipe Cutting, excision round protrusion after the composition type groove processing of the second mould group three to bulb tube.
2. a kind of thin type chain pearl moulding process as described in claim 1, it is characterised in that: in step (1), tungsten metal is added
When material, it is added according in per kilogram gold in the ratio of 1~2 gram of tungsten metal material.
3. a kind of thin type chain pearl moulding process as described in claim 1, it is characterised in that: in step (2), by step (1)
Gold bullion tabletting that treated forms gold plaque, and the gold plaque is bent to the apertured hollow tube of tool after mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711085158.3A CN108145061B (en) | 2017-11-07 | 2017-11-07 | Thin type chain pearl moulding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711085158.3A CN108145061B (en) | 2017-11-07 | 2017-11-07 | Thin type chain pearl moulding process |
Publications (2)
| Publication Number | Publication Date |
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| CN108145061A CN108145061A (en) | 2018-06-12 |
| CN108145061B true CN108145061B (en) | 2019-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711085158.3A Expired - Fee Related CN108145061B (en) | 2017-11-07 | 2017-11-07 | Thin type chain pearl moulding process |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110671470B (en) * | 2019-09-29 | 2021-03-05 | 梁恩 | Transmission chain |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1087876A (en) * | 1913-05-31 | 1914-02-17 | Bryant Electric Co | Machine for making bead chains. |
| US1548677A (en) * | 1921-03-02 | 1925-08-04 | Bead Chain Mfg Co | Manufacture of bead chains |
| CN1748893A (en) * | 2004-09-15 | 2006-03-22 | 朱国光 | Method for producing slide fastener tooth |
| CN101491384A (en) * | 2008-01-21 | 2009-07-29 | 株式会社并木制作所 | Ball chain and method of manufacturing the same |
| WO2009150314A2 (en) * | 2008-05-16 | 2009-12-17 | ONERA (Office National d'Etudes et de Recherches Aérospatiales) | Method for preparing a cellular material based on hollow metal beads |
| CN102920115A (en) * | 2012-10-17 | 2013-02-13 | 深圳市翠绿首饰股份有限公司 | Circular connecting shackle ornament and automatic processing device thereof |
| CN106213705A (en) * | 2016-07-28 | 2016-12-14 | 山东招金金银精炼有限公司 | A kind of purity is the processing technique of 999.99 ‰ chain class gold jewelries |
-
2017
- 2017-11-07 CN CN201711085158.3A patent/CN108145061B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1087876A (en) * | 1913-05-31 | 1914-02-17 | Bryant Electric Co | Machine for making bead chains. |
| US1548677A (en) * | 1921-03-02 | 1925-08-04 | Bead Chain Mfg Co | Manufacture of bead chains |
| CN1748893A (en) * | 2004-09-15 | 2006-03-22 | 朱国光 | Method for producing slide fastener tooth |
| CN101491384A (en) * | 2008-01-21 | 2009-07-29 | 株式会社并木制作所 | Ball chain and method of manufacturing the same |
| WO2009150314A2 (en) * | 2008-05-16 | 2009-12-17 | ONERA (Office National d'Etudes et de Recherches Aérospatiales) | Method for preparing a cellular material based on hollow metal beads |
| CN102920115A (en) * | 2012-10-17 | 2013-02-13 | 深圳市翠绿首饰股份有限公司 | Circular connecting shackle ornament and automatic processing device thereof |
| CN106213705A (en) * | 2016-07-28 | 2016-12-14 | 山东招金金银精炼有限公司 | A kind of purity is the processing technique of 999.99 ‰ chain class gold jewelries |
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| Publication number | Publication date |
|---|---|
| CN108145061A (en) | 2018-06-12 |
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