CN114603871A - Hollow gold watchband grain wax blank mold and corresponding wax blank manufacturing method - Google Patents

Hollow gold watchband grain wax blank mold and corresponding wax blank manufacturing method Download PDF

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Publication number
CN114603871A
CN114603871A CN202210375100.7A CN202210375100A CN114603871A CN 114603871 A CN114603871 A CN 114603871A CN 202210375100 A CN202210375100 A CN 202210375100A CN 114603871 A CN114603871 A CN 114603871A
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China
Prior art keywords
mold
wax
wax blank
flow channel
blank
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CN202210375100.7A
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Chinese (zh)
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CN114603871B (en
Inventor
罗玉合
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Fujian Chuanjin Daiyin Technology Co ltd
Shenzhen Chuanjin Daiyin Technology Co ltd
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Fujian Chuanjin Daiyin Technology Co ltd
Shenzhen Chuanjin Daiyin Technology Co ltd
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Priority to CN202210375100.7A priority Critical patent/CN114603871B/en
Publication of CN114603871A publication Critical patent/CN114603871A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/24—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 characterised by the choice of material
    • B29C67/241—Moulding wax
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1615—The materials being injected at different moulding stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D1/00—Electroforming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C2045/1682—Making multilayered or multicoloured articles preventing defects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C2045/2683—Plurality of independent mould cavities in a single mould
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The invention provides a wax blank mold for hollow gold watchbands with particles and a corresponding wax blank manufacturing method. First mould subassembly includes first mould and first lower mould, forms first die cavity and first sprue between first mould and the first lower mould, and first die cavity is used for forming elementary wax base, and first sprue forms first connecting portion, is provided with the shrinkage pool on first sprue, and the shrinkage pool is used for annotating wax formation location portion. The second mold assembly comprises a second upper mold and a second lower mold, a second mold cavity and a second main flow channel are formed between the second upper mold and the second lower mold, and positioning holes used for positioning and connecting the positioning portions are formed in the second main flow channel. When the second die assembly is closed, the primary wax blank is suspended in the second die cavity. The wax blank mold for the hollow gold watchband with the particles is used for manufacturing the wax blank through secondary wax injection, the thickness of the secondary wax injection can be well controlled, the shrinkage of the wax blank is small, pits are not easy to form on the surface, and the product quality is good and the yield is high.

Description

Hollow gold watchband grain wax blank mold and corresponding wax blank manufacturing method
Technical Field
The invention relates to the field of molds, in particular to a mold for a wax blank of a hollow gold watchband with particles and a corresponding wax blank manufacturing method.
Background
The band of a wristwatch is generally formed by connecting a plurality of band particles, and a somewhat expensive wristwatch uses gold band particles, which are formed by electroforming using a wax blank. The technology in the prior art generally adopts a wax injection mold to form a wax blank in one step, because the temperature of the wax blank is higher during wax injection, based on the principle of thermal expansion and cold contraction, the shrinkage phenomenon can occur after the wax blank is cooled, so that the appearance of the wax blank is deformed, a pit part which is not required by design can easily appear on the surface of the wax blank, the size of the wax blank can also be changed after shrinkage, the product quality is poor, the complex repairing treatment which is time-consuming and labor-consuming is required to be carried out on the wax blank, and the yield is low.
Therefore, it is necessary to provide a wax blank mold for a hollow gold watchband with particles and a corresponding wax blank manufacturing method to solve the above technical problems.
Disclosure of Invention
The invention provides a wax blank mold for hollow gold watchbands with particles and a corresponding wax blank manufacturing method, and aims to solve the problems of poor product quality and low production efficiency caused by one-step molding of a wax blank by using a wax injection mold in the prior art.
In order to solve the technical problems, the technical scheme of the invention is as follows: the mould for manufacturing the wax blank with the particles of the watch band comprises a first mould component and a second mould component, wherein the first mould component is used for manufacturing a primary wax blank, and the second mould component is used for continuously injecting wax at the periphery of the primary wax blank to form a semi-finished wax blank;
the first mold assembly comprises a first upper mold and a first lower mold, a first mold cavity and a first main flow channel which are mutually communicated are formed between the first upper mold and the first lower mold, the first mold cavity is used for forming the primary wax blank, the first main flow channel forms a first connecting part, a concave hole is formed in the first main flow channel, and the concave hole is used for injecting wax to form a positioning part;
the second mold assembly comprises a second upper mold and a second lower mold, a second mold cavity and a second main flow channel are formed between the second upper mold and the second lower mold and are communicated with each other, a positioning hole used for positioning and connecting the positioning portion is formed in the second main flow channel, when the first connecting portion is located in the second main flow channel, and the positioning portion is positioned and connected in the positioning hole, the primary wax blank is suspended in the second mold cavity.
In the invention, the positioning hole is arranged on the second lower die, when the second upper die and the second lower die are closed, the positioning part is positioned and connected in the positioning hole, and the second upper die is contacted with one side of the first connecting part, which is far away from the positioning part, so that the first connecting part is limited in the second main flow channel.
In the invention, the cross section of the first main runner is in an arc shape, the concave hole is arranged on the arc inner wall surface of the first main runner, the second main runner is divided into a first sub-runner and a second sub-runner along the axial direction, the first sub-runner is arranged on the second lower die, the second sub-runner is arranged on the second upper die, the cross sections of the first sub-runner and the second sub-runner are both in an arc shape, and the shape size of the first connecting part is matched with that of the first sub-runner.
And the cross section aperture of the second branch flow channel is smaller than or equal to that of the first branch flow channel.
In the invention, the second mold assembly further comprises a second pouring channel communicating the second main flow channel and the external space, and one end of the second main flow channel, which is close to the second pouring channel, is communicated with the second mold cavity through an amplification flow channel.
Further, the amplification flow channel is disposed in an inclined or curved shape compared to the second main flow channel.
In the invention, the primary wax blank comprises a first middle rod and first end rods positioned at two ends of the first middle rod, the semi-finished wax blank comprises a second middle rod formed by continuously injecting wax on the periphery of the first middle rod and a second end rod formed by continuously injecting wax on the periphery of the first end rod, and two ends of the second end rod are provided with through holes;
and a core rod for forming a through hole on the second end rod is arranged on the inner wall of the second die cavity, and when the primary wax blank is positioned in the second die cavity, the first end rod at each end of the first middle rod is positioned between the two core rods.
The second lower die is provided with a guide rod, the guide rod is connected with a sliding block in a sliding manner, the core bar is arranged on the sliding block, a spring is sleeved on the guide rod, and the spring is positioned between the two sliding blocks;
the slider outside is provided with the pressurized inclined plane, be provided with on the second mould and be used for the extrusion portion on pressurized inclined plane.
In the invention, the first mold assembly further comprises a first ejection mechanism, and the first ejection mechanism comprises a first control plate, a first connecting shaft, a first ejector plate and a plurality of first ejectors;
the first connecting shaft is arranged below the first lower die, the first control plate is rotatably connected with the first connecting shaft, the first ejector pin plate is located between the inner end of the first control plate and the first lower die, the bottom end of the first ejector pin is connected with the first ejector pin plate, the first ejector pins all slidably penetrate through the first lower die, the top end of the first ejector pin extends into the first die cavity, the intersection position of the first middle rod and the first end rod is a first intersection position, and the top end of the first ejector pin is opposite to the first intersection position;
the second mold assembly further comprises a second ejection mechanism, and the second ejection mechanism comprises a second control plate, a second connecting shaft, a second ejector plate, a push rod and a plurality of second ejectors;
the second connecting axle sets up the below of second lower mould, the second control panel with the second connecting axle rotates to be connected, the second thimble board be located the inner of second control panel with between the second lower mould, the push rod with the bottom of second thimble with the second thimble board is connected, the push rod with the second thimble all slides and runs through the second lower mould, the top of push rod extends to in the second sprue, the top of second thimble extends to in the second die cavity, second middle part pole with the crossing position of second end pole is the second position of crossing, the top of second thimble with the second position of crossing is relative.
The invention also comprises a manufacturing method of the watchband wax blank with the grains, which uses the hollow golden watchband wax blank mold and comprises the following steps:
using the first mold assembly to form a primary wax blank;
taking the primary wax blank, fixedly placing the primary wax blank in a second mold cavity of the second mold assembly and a second main runner, and injecting wax into the second mold assembly to form a semi-finished wax blank;
and taking the semi-finished wax blank, removing the second connecting part on the semi-finished wax blank, and polishing the outer surface of the semi-finished wax blank to obtain a finished wax blank.
Compared with the prior art, the invention has the beneficial effects that: the wax blank mold for the hollow gold watchband with the particles is used for manufacturing the wax blank through secondary wax injection, the thickness of the secondary wax injection can be well controlled, the shrinkage of the wax blank is small, pits are not easy to form on the surface, the product quality is good, and the yield is high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments are briefly introduced below, and the drawings in the following description are only corresponding to some embodiments of the present invention.
Fig. 1 is a schematic structural diagram of a first mold assembly of a first embodiment of a hollow gold watchband wax blank mold according to the invention.
FIG. 2 is a schematic structural diagram of another mating perspective of the first mold assembly of the first embodiment.
Fig. 3 is a schematic view of the structure of the primary wax blank of the first embodiment.
Fig. 4 is a schematic structural view of a second mold assembly of the first embodiment.
FIG. 5 is a schematic structural diagram of another mating perspective of the second mold assembly of the first embodiment.
Fig. 6 is a schematic structural view of a second ejection mechanism of the second mold assembly of the first embodiment.
Fig. 7 is a schematic structural view of a semi-finished wax blank of the first embodiment.
Fig. 8 is a schematic view of the first connection portion of the primary wax blank of the first embodiment positioned in the second main flow channel.
FIG. 9 is a schematic structural view of an amplification flow channel of the first embodiment.
Fig. 10 is a schematic structural diagram of a first mold assembly of a second embodiment of the hollow gold watchband wax blank mold according to the invention.
Fig. 11 is a schematic structural diagram of a second mold assembly of a second embodiment of the hollow gold watchband wax blank mold according to the invention.
Fig. 12 is a schematic structural view of a semi-finished wax blank of the second embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the present invention, directional terms such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom" are used only with reference to the orientation of the drawings, and the directional terms are used for illustration and understanding of the present invention, and are not intended to limit the present invention.
The terms "first," "second," and the like in the terms of the invention are used for descriptive purposes only and not for purposes of indication or implication relative importance, nor as a limitation on the order of precedence.
In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., the connection may be a detachable connection, or a connection of a unitary construction; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The technology in the prior art generally adopts a wax injection mold to form a wax blank in one step, because the temperature of the wax blank is higher during wax injection, based on the principle of thermal expansion and cold contraction, the shrinkage phenomenon can occur after the wax blank is cooled, so that the appearance of the wax blank is deformed, the product quality is poor, a pit part which is not required by design can easily appear on the surface of the wax blank, the size of the wax blank can also be changed after shrinkage, thus the wax blank is required to be subjected to complex repair treatment which is time-consuming and labor-consuming, and the yield is low.
The first embodiment of the invention is a wax blank mold for a hollow gold watchband, which can solve the above technical problems.
Referring to fig. 1, fig. 2, fig. 4 and fig. 5, fig. 1 is a schematic structural diagram of a first mold assembly of a first embodiment of a hollow golden watchband wax blank mold according to the present invention. FIG. 2 is a schematic structural diagram of another mating perspective of the first mold assembly of the first embodiment. Fig. 4 is a schematic structural view of a second mold assembly of the first embodiment. FIG. 5 is a schematic structural diagram of another mating perspective of the second mold assembly of the first embodiment.
In the drawings, elements having similar structures are denoted by the same reference numerals.
The invention provides a wax blank mould for hollow gold watchband grains, which is used for manufacturing wax blanks of watchband grains, wherein the wax blanks are used for electroforming to form metal watchband grains, so that the surface smoothness of the wax blanks can determine the quality of the metal watchband grains.
The hollow golden watchband wax blank mold in the embodiment comprises a first mold component 1 and a second mold component 3, wherein the first mold component 1 is used for manufacturing the primary wax blank 21, and the second mold component 3 is used for continuously injecting wax on the periphery of the primary wax blank 21 to form a semi-finished wax blank 41.
The first mold assembly 1 includes a first upper mold 11 and a first lower mold 12, a first mold cavity 13 and a first main flow channel 14 are formed between the first upper mold 11 and the first lower mold 12, the first mold cavity 13 is used for forming a primary wax blank 21, the first main flow channel 14 forms a first connecting portion 22, after wax injection molding, the first connecting portion 22 and the primary wax blank 21 form a connecting structure, and it is easy to think that a plurality of primary wax blanks 21 can be connected and manufactured through a plurality of first connecting portions 22, a concave hole 15 is provided on the first main flow channel 14, and the concave hole 15 is used for injecting wax to form a positioning portion 23.
Still be provided with the first runner 111 of intercommunication first sprue 14 and exterior space on the first mould 11 of going up, annotate the wax back, can form first water gap portion 24 in first runner 111, make things convenient for follow-up taking to annotate the wax for the secondary.
The second mold assembly 3 comprises a second upper mold 31 and a second lower mold 32, a second mold cavity 38 and a second main flow passage 3A which are communicated with each other are formed between the second upper mold 31 and the second lower mold 32, a positioning hole 3B for positioning and connecting the positioning portion 23 is arranged on the second main flow passage 3A, when the first connecting portion 22 is located in the second main flow passage 3A and the positioning portion 23 is positioned and connected in the positioning hole 3B, the primary wax blank 21 is suspended in the second mold cavity 38, so that the semi-finished wax blank 41 can be formed by injecting wax to the periphery of the primary wax blank 21 and wrapping the wax.
In the present embodiment, the first mold assembly 1 and the second mold assembly 3 both perform mold opening and closing operations through the upper fixing plate, the lower fixing plate, the base, and the guide pillars, and are of a more conventional structure. Therefore, in this embodiment, only the second mold unit 3 will be described.
Referring to fig. 4, the second upper mold 31 is connected to an upper fixing plate 35, the second lower mold 32 is connected to a base 33 and a lower fixing plate 34, and an ejection mechanism can be disposed in the base 33. The guide posts 36 are disposed on the lower fixing plate 34, and the upper fixing plate 35 is slidably connected with the guide posts 36. The second lower die 32 is connected with the base 33 and the lower fixing plate 34 in a locking manner through screws 37, and the second control plate 51 is provided with clearance holes corresponding to the screws 37.
Referring to fig. 3, in the present embodiment, two primary wax blanks 21 are connected by a first connecting portion 22, in the present embodiment, the first cavity 13 is disposed at both ends of the first main flow channel 14, and the second cavity 38 is disposed at both ends of the second main flow channel 3A.
Referring to fig. 5 and 8, in the present embodiment, the positioning hole 3B is disposed on the second lower mold 32, when the second upper mold 31 and the second lower mold 32 are closed, the positioning portion 23 is positioned and connected in the positioning hole 3B, the second upper mold 31 contacts with a side of the first connecting portion 22 away from the positioning portion 23 to limit the first connecting portion 22 in the second main flow channel 3A, and the second connecting portion 22 is pressed to fix the first wax blank 21 stably suspended in the second mold cavity 38, so that the second mold assembly 3 has good wax injection quality.
The cross section of the first main flow channel 14 in this embodiment is arcuate, so that the first connecting portion 22 can be well demolded, and the concave hole 15 is disposed on the arc-shaped inner wall surface of the first main flow channel 14.
The second sprue 3A is divided into a first branch sprue 3A1 and a second branch sprue 3A2 along the axial direction, the first branch sprue 3A1 is arranged on the second lower die 32, the second branch sprue 3A2 is arranged on the second upper die 31, the cross sections of the first branch sprue 3A1 and the second branch sprue 3A2 are in an arch shape, so that the first connecting part 22 and the second connecting part 42 can be well demolded, wherein the shape of the first connecting part 22 is matched with that of the first branch sprue 3A1, and the second sprue can be well fixed to the second sprue 3A.
The cross-sectional aperture of the second sub-runner is smaller than or equal to that of the first sub-runner, so that the second upper die 31 can better press and fix the second connecting part 22.
Referring to fig. 9, in the present embodiment, the second mold assembly 3 further includes a second runner 311 communicating the second main runner 3A with the external space, and an end of the second main runner 3A near the second runner is communicated with the second cavity 38 through an expanding runner 3A3, so that the melted wax can be better delivered to the periphery of the primary wax blank 21, the delivery is smoother, the efficiency of wax injection and the quality of wax injection of the second mold assembly 3 are improved.
In this embodiment, the amplification flow paths 3A3 are disposed on both sides of the second main flow path 3A, and the two amplification flow paths 3A3 are symmetrically disposed, so that wax injection to the periphery of the primary wax blank 21 is more uniform and efficient.
In this case, the communication position of the amplification flow path 3A3 and the second cavity 38 may be set according to circumstances so that the melted wax is better transported, and the amplification flow path 3A3 may be inclined or curved compared to the second main flow path 3A.
Referring to fig. 7, the wax blank is i-shaped in this embodiment, referring to fig. 3 and 7, the primary wax blank 21 includes a first middle rod 211 and first end rods 212 located at two ends of the first middle rod 211, the semi-finished wax blank 41 includes a second middle rod 411 formed by continuously injecting wax on the periphery of the first middle rod 211 and a second end rod 412 formed by continuously injecting wax on the periphery of the first end rod 212, and both ends of the second end rod 412 are provided with through holes 413.
The inner wall of the second cavity 38 is provided with core rods 39 for forming through holes in the second end rods 412, and when the primary wax blank 21 is located in the second cavity 38, the first end rods 212 at each end of the first central rod 211 are located between the two core rods 39. Because the through hole 413 exists on the second end rod 412, the shrinkage of the part around the through hole 413 is very small, so that the first end rod 212 does not need to be provided with a through hole, the wax injection process of the primary wax blank 21 is simple and efficient, and meanwhile, the semi-finished wax blank 41 can have better wax injection quality.
In this embodiment, a guide rod 3C is disposed on the second lower die 32, a slider 3D is slidably connected to the guide rod 3C, the core bar 39 is disposed on the slider 3D, a spring 3E is sleeved on the guide rod 3C, and the spring 3E is located between the two sliders 3D. The outer side of the sliding block 3D is provided with a pressed inclined surface 3D1, and the second upper die 31 is provided with a pressing part for pressing the pressed inclined surface 3D 1. When the second upper die 31 and the second lower die 32 are closed, the extrusion part extrudes the two sliders 3D to be close to each other, so that the core bar 39 slides into the second die cavity 38, and the operation is simple and efficient.
In the present invention, the first mold assembly 1 and the second mold assembly 3 are each provided with an ejection mechanism for ejecting respective wax injection products.
The first mold assembly 1 further comprises a first ejection mechanism, and the first ejection mechanism comprises a first control plate, a first connecting shaft, a first ejector plate and a plurality of first ejectors.
The first connecting shaft is arranged below the first lower die 12, the first control plate is connected with the first connecting shaft in a rotating mode, the first ejector pin plate is located between the inner end of the first control plate and the first lower die 12, the bottom end of the first ejector pin is connected with the first ejector pin plate, the first ejector pin penetrates through the first lower die 12 in a sliding mode, the top end of the first ejector pin extends into the first die cavity 13, the intersecting position of the first middle rod 211 and the first end rod 212 is a first intersecting position, the top end of the first ejector pin is opposite to the first intersecting position, the ejection position layout is reasonable, the ejection force of the primary wax blank 21 is balanced, and the primary wax blank 21 can be ejected stably. The first ejection mechanism and the second ejection mechanism have similar structures, so that reference can also be made to fig. 6.
The second mold assembly 3 further includes a second ejection mechanism connected to the base 33, and the second ejection mechanism includes a second control plate 51, a second connecting shaft 52, a second ejector plate 53, a push rod 54, and a plurality of second ejectors 55.
The second connecting shaft 52 is arranged below the second lower die 32, the second connecting shaft 52 is connected with the base 33, the second control plate 51 is rotatably connected with the second connecting shaft 52 (or the second control plate 51 is fixedly connected with the second connecting shaft 52, the second connecting shaft 52 is rotatably connected with the base 33), the second ejector plate 53 is positioned between the inner end of the second control plate 51 and the second lower die 32, the bottom ends of the push rod 54 and the second ejector 55 are connected with the second ejector plate 53, the push rod 54 and the second ejector 55 both slidably penetrate through the second lower die 32, the top end of the push rod 54 extends into the second main flow passage 3A, the top end of the second ejector 55 extends into the second die cavity 38, the intersection position of the second middle rod 411 and the second end rod 412 is a second intersection position, the top end of the second ejector 55 is opposite to the second intersection position, the ejection position layout is reasonable, the ejection force to the semi-finished wax blank 41 is very balanced, and the semi-finished wax blank 41 can be stably ejected.
It should be noted that, a return spring 56 may be disposed on the push rod 54, the return spring 56 is located between the second ejector plate 53 and the base 33 (or a return torsion spring is disposed on the second connecting shaft 52), and the elastic force causes the second ejector plate 53 to slide in a direction away from the base 33, so that when the operator does not operate the second control plate 51, the second ejector 55 does not extend into the second cavity 38, and the influence on wax injection is avoided.
The invention also comprises a manufacturing method of the watchband wax blank, which uses the hollow golden watchband wax blank mold and comprises the following steps:
the first mold assembly 1 is used for manufacturing and forming the primary wax blank 21, after solidification, the primary wax blank 21 is ejected out through the first ejection mechanism, and at the moment, the integral structure of the primary wax blank 21 and the first connecting portion 22 can be conveniently taken through the first water opening portion 24.
The primary wax blank 21 is fixedly placed in the second mold cavity 38 and the second main flow channel 3A of the second mold assembly 3, the positioning portion 23 is positioned and connected in the positioning hole 3B, so that the primary wax blank 21 is stably suspended in the second mold cavity 38, and wax is injected into the second mold assembly 3 to form a semi-finished wax blank 41.
And then taking the semi-finished wax blank 41, removing the second connecting part 42 on the semi-finished wax blank 41, and polishing the outer surface of the semi-finished wax blank 41 to obtain a finished wax blank.
The hollow gold watchband grain wax base mould of this embodiment annotates the wax preparation wax base through the secondary, and the thickness of wax is annotated to the control second that can be fine, and the wax base shrinks with littlely, is difficult for forming the pit on the surface, and product quality is good, and the yield is high.
The second embodiment of the invention is a wax blank mold for a hollow gold watchband, which can solve the above technical problems.
Referring to fig. 10, fig. 11 and fig. 12, fig. 10 is a schematic structural diagram of a first mold assembly of a second embodiment of a hollow gold watchband wax blank mold according to the present invention. Fig. 11 is a schematic structural diagram of a second mold assembly of a second embodiment of the hollow gold watchband wax blank mold according to the invention. Fig. 12 is a schematic structural view of a semi-finished wax blank of the second embodiment.
The wax injection principle of the hollow golden watchband wax blank mold in the embodiment is substantially the same as that of the first embodiment, and mainly lies in that the shape and the structure of the watchband wax blank are different, so that the mold cavity layouts of the first mold assembly and the second mold assembly are correspondingly different.
The invention provides a wax blank mould for hollow gold watchband grains, which is used for manufacturing wax blanks of watchband grains, wherein the wax blanks are used for electroforming to form metal watchband grains, so that the surface smoothness of the wax blanks can determine the quality of the metal watchband grains.
The hollow golden watchband wax blank mold in the embodiment comprises a first mold assembly and a second mold assembly, wherein the first mold assembly is used for manufacturing the primary wax blank 65, and the second mold assembly is used for continuously injecting wax at the periphery of the primary wax blank to form a semi-finished wax blank 81.
The first mold assembly comprises a first upper mold 61 and a first lower mold 62, a first mold cavity 63 and a first main flow channel 64 which are communicated with each other are formed between the first upper mold 61 and the first lower mold 62, the first mold cavity 63 is used for forming a primary wax blank 65, the first main flow channel 64 forms a first connecting part, after wax injection molding, the first connecting part and the primary wax blank 65 can form a connecting structure, a concave hole 641 is arranged on the first main flow channel 64, and the concave hole 641 is used for injecting wax to form a positioning part 651.
The second mold assembly comprises a second upper mold and a second lower mold 71, a second mold cavity and a second main flow channel which are communicated with each other are formed between the second upper mold and the second lower mold 71, a positioning hole for positioning and connecting a positioning portion 651 is formed in the second main flow channel, when the first connecting portion is located in the second main flow channel and the positioning portion 651 is positioned and connected in the positioning hole, the primary wax blank 65 is suspended in the second mold cavity, and therefore the wax can be injected to the periphery of the primary wax blank 65 to wrap the periphery of the primary wax blank 81 to form a semi-finished wax blank 81.
Referring to fig. 10 and 12, the band of the present embodiment has a square shape, the primary wax blank 65 includes a first block, the semi-finished wax blank 81 includes a second block formed by further injecting wax around the first block, and the second block is provided with a through hole.
The inner contour of the first cavity 63 and the second cavity in this embodiment is substantially identical, which corresponds to the inner contour of the second cavity being dimensioned to be one turn larger than the first cavity 63, i.e. a semi-finished wax blank 81 is formed by injecting a layer of wax along the outer contour of the primary wax blank 65.
The first primary runners 642 are arranged on two sides of the first main runner 14, the first primary runners 642 are communicated with the first mold cavity 13, the first primary runners 642 are arranged on two sides of the second main runner 3A, the first primary runners 642 are communicated with the first mold cavity 63, so that more primary wax blanks 65 can be formed by wax injection, the corresponding second mold cavities are communicated with the second main runner through the second secondary runners, more semi-finished wax blanks 65 are formed by wax injection, and the production is efficient.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.

Claims (10)

1. The mould is characterized by comprising a first mould component and a second mould component, wherein the first mould component is used for manufacturing a primary wax blank, and the second mould component is used for continuously injecting wax at the periphery of the primary wax blank to form a semi-finished wax blank;
the first mold assembly comprises a first upper mold and a first lower mold, a first mold cavity and a first main flow channel which are mutually communicated are formed between the first upper mold and the first lower mold, the first mold cavity is used for forming the primary wax blank, the first main flow channel forms a first connecting part, a concave hole is formed in the first main flow channel, and the concave hole is used for injecting wax to form a positioning part;
the second mold assembly comprises a second upper mold and a second lower mold, a second mold cavity and a second main flow channel are formed between the second upper mold and the second lower mold and are communicated with each other, a positioning hole used for positioning and connecting the positioning portion is formed in the second main flow channel, when the first connecting portion is located in the second main flow channel, and the positioning portion is positioned and connected in the positioning hole, the primary wax blank is suspended in the second mold cavity.
2. The hollow gold watchband wax blank mold as claimed in claim 1, wherein the positioning hole is formed in the second lower mold, the positioning portion is connected in the positioning hole in a positioning manner when the second upper mold and the second lower mold are closed, and the second upper mold is in contact with one side of the first connecting portion, which is far away from the positioning portion, so as to limit the first connecting portion in the second main flow channel.
3. The hollow gold watchband wax blank mold according to claim 1, wherein the cross section of the first main flow channel is in an arch shape, the concave hole is formed in an arc-shaped inner wall surface of the first main flow channel, the second main flow channel is divided into a first branch flow channel and a second branch flow channel along the axial direction, the first branch flow channel is arranged on the second lower mold, the second branch flow channel is arranged on the second upper mold, the cross sections of the first branch flow channel and the second branch flow channel are in an arch shape, and the outer dimension of the first connecting portion is matched with the first branch flow channel.
4. The hollow golden watchband wax blank mold as claimed in claim 3, wherein the cross-sectional aperture of the second sub-flow passage is smaller than or equal to the cross-sectional aperture of the first sub-flow passage.
5. The hollow golden watchband wax blank mold according to claim 1, wherein the second mold assembly further comprises a second runner communicating the second main runner with an external space, and an end of the second main runner near the second runner communicates with the second mold cavity through an enlarged runner.
6. The hollow golden watchband wax blank mold as claimed in claim 5, wherein the amplification flow channel is inclined or curved compared with the second main flow channel.
7. The hollow golden watchband wax blank mold according to claim 1, wherein the primary wax blank comprises a first middle rod and first end rods positioned at two ends of the first middle rod, the semi-finished wax blank comprises a second middle rod formed by continuously injecting wax on the periphery of the first middle rod and a second end rod formed by continuously injecting wax on the periphery of the first end rod, and two ends of the second end rod are provided with through holes;
and a core rod for forming a through hole on the second end rod is arranged on the inner wall of the second die cavity, and when the primary wax blank is positioned in the second die cavity, the first end rod at each end of the first middle rod is positioned between the two core rods.
8. The hollow golden watchband wax blank mold as claimed in claim 7, wherein a guide rod is arranged on the second lower mold, a sliding block is connected on the guide rod in a sliding manner, the core bar is arranged on the sliding block, a spring is sleeved on the guide rod, and the spring is positioned between the two sliding blocks;
the slider outside is provided with the pressurized inclined plane, be provided with on the second and be used for the extrusion portion on pressurized inclined plane.
9. The hollow golden watchband wax blank mold according to claim 7, wherein the first mold assembly further comprises a first ejection mechanism, the first ejection mechanism comprising a first control plate, a first connecting shaft, a first ejector plate and a plurality of first ejectors;
the first connecting shaft is arranged below the first lower die, the first control plate is rotatably connected with the first connecting shaft, the first ejector pin plate is located between the inner end of the first control plate and the first lower die, the bottom end of the first ejector pin is connected with the first ejector pin plate, the first ejector pins all slidably penetrate through the first lower die, the top end of the first ejector pin extends into the first die cavity, the intersection position of the first middle rod and the first end rod is a first intersection position, and the top end of the first ejector pin is opposite to the first intersection position;
the second mold assembly further comprises a second ejection mechanism, and the second ejection mechanism comprises a second control plate, a second connecting shaft, a second ejector plate, a push rod and a plurality of second ejectors;
the second connecting axle sets up the below of second lower mould, the second control panel with the second connecting axle rotates to be connected, the second thimble board be located the inner of second control panel with between the second lower mould, the push rod with the bottom of second thimble with the second thimble board is connected, the push rod with the second thimble all slides and runs through the second lower mould, the top of push rod extends to in the second sprue, the top of second thimble extends to in the second die cavity, second middle part pole with the crossing position of second end pole is the second position of crossing, the top of second thimble with the second position of crossing is relative.
10. A method for manufacturing wax-coated green body of watchband, which is characterized in that the hollow mould for wax-coated green body of gold watchband as claimed in any one of claims 1-9 is used, and comprises the following steps:
forming a primary wax blank using the first mold assembly;
taking the primary wax blank, fixedly placing the primary wax blank in a second mold cavity of the second mold assembly and a second main runner, and injecting wax into the second mold assembly to form a semi-finished wax blank;
and taking the semi-finished wax blank, removing the second connecting part on the semi-finished wax blank, and polishing the outer surface of the semi-finished wax blank to obtain a finished wax blank.
CN202210375100.7A 2022-04-11 2022-04-11 Hollow gold watchband grain wax blank mold and corresponding wax blank manufacturing method Active CN114603871B (en)

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CN202210375100.7A CN114603871B (en) 2022-04-11 2022-04-11 Hollow gold watchband grain wax blank mold and corresponding wax blank manufacturing method

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CN202210375100.7A CN114603871B (en) 2022-04-11 2022-04-11 Hollow gold watchband grain wax blank mold and corresponding wax blank manufacturing method

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3809969A1 (en) * 1987-06-18 1989-10-05 Ishida Kohki Seisakusho Co Ltd Process for producing a lens
CN210190439U (en) * 2019-07-01 2020-03-27 沧州市昌源管件有限公司 Four corners chock plug wax matrix forming die
CN111283141A (en) * 2020-03-30 2020-06-16 老铺黄金股份有限公司 Method for manufacturing block gold device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3809969A1 (en) * 1987-06-18 1989-10-05 Ishida Kohki Seisakusho Co Ltd Process for producing a lens
CN210190439U (en) * 2019-07-01 2020-03-27 沧州市昌源管件有限公司 Four corners chock plug wax matrix forming die
CN111283141A (en) * 2020-03-30 2020-06-16 老铺黄金股份有限公司 Method for manufacturing block gold device

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