CN217073430U - Wax blank mould for covered hollow gold watchband - Google Patents

Abstract

The utility model provides a hollow gold watchband area grain wax base mould of outsourcing type, it includes first mould subassembly and second mould subassembly. 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 utility model discloses a hollow gold watchband area grain wax base mould of outsourcing type annotates the wax preparation wax base through the secondary, and the thickness of wax is annotated to the control second time that can be fine, and the wax base shrinks slightly, is difficult for forming the pit on the surface, and product quality is good, and the yield is high.

Description

Wax blank mould for covered hollow gold watchband

Technical Field

The utility model relates to the field of molds, in particular to hollow gold watchband of outsourcing type area grain wax base mould.

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 mold for wax blank of an encased hollow gold watchband to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a hollow gold watchband area grain wax base mould of outsourcing type to the technology of solving among the prior art is the one shot forming wax base of using notes wax matrix utensil, can lead to the product poor quality, problem that production efficiency is low.

In order to solve the technical problem, the utility model adopts the technical scheme that: an outsourcing type hollow golden watchband wax blank mold is used for manufacturing wax blanks of watchband particles and comprises a first mold assembly and a second mold assembly, wherein the first mold assembly is used for manufacturing a primary wax blank, 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;

the first mold assembly comprises a first upper mold and a first lower mold, the first upper mold and the first lower mold slide relatively through a guide pillar, a first mold cavity and a first main flow channel which are communicated with each other 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, the second upper mold and the second lower mold slide relatively through a guide pillar, 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, a positioning hole used for positioning and connecting the positioning portion is formed in the second main flow channel, and 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.

The utility model discloses in, the both ends of first sprue all are provided with first die cavity, the both ends of second sprue all are provided with the second die cavity.

The utility model discloses in, the both sides of first sprue are provided with a plurality of runners for the first time, the runner for the first time with first die cavity intercommunication, the both sides of second sprue are provided with a plurality of runners for the second time, the runner for the second time with second die cavity intercommunication.

The utility model discloses in, the locating hole sets up on the second lower mould, work as go up the mould on the second with during the compound die of second lower mould, location portion location is connected in the locating hole, go up the mould on the second with first connecting portion keeps away from one side contact of location portion, with first connecting portion restriction is in the second sprue.

The utility model discloses in, the cross section of first sprue is bow-shaped, the shrinkage pool sets up on the arc internal face of first sprue, first subchannel and second branch runner are split into along axial direction to the second sprue, first branch runner sets up on the second lower mould, the second divides the runner setting to be in on the second mould, first branch runner with the cross section that the second divides the runner is the bow-shaped form, the overall dimension of first connecting portion with first branch runner looks adaptation.

And the cross section aperture of the second branch flow channel is smaller than or equal to that of the first branch flow channel.

The utility model discloses in, the second mould subassembly is still including the intercommunication the second sprue and exterior space's second is watered, the second sprue is close to the second sprue water one end through the increase runner with the second die cavity intercommunication.

Furthermore, the amplification flow channel is arranged on both sides of the second main flow channel.

In addition, the amplification flow channel is disposed obliquely or curvilinearly compared to the second main flow channel.

In the utility model, 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 at the periphery of the first middle rod and a second end rod formed by continuously injecting wax at the periphery of the first end rod, and both 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.

A guide rod is arranged on the second lower die, a sliding block is connected onto 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.

The utility model discloses compare in prior art, its beneficial effect is: the utility model discloses a hollow gold watchband area grain wax base mould of outsourcing type annotates the wax preparation wax base through the secondary, and the thickness of wax is annotated to the control second time that can be fine, and the wax base shrinks slightly, is difficult for forming the pit on the surface, and 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 to be used in the embodiments are briefly introduced below, and the drawings in the following description are only corresponding drawings of some embodiments of the present invention.

Fig. 1 is a schematic structural diagram of a first mold assembly of a first embodiment of an outsourcing type hollow gold watchband wax blank mold of the present 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 mold for molding a wax blank of an outsourcing type hollow gold watchband of the present invention.

Fig. 11 is a schematic structural diagram of a second mold assembly according to a second embodiment of the present invention, wherein the second mold assembly is an outsourcing type hollow gold watchband with a wax blank mold.

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 described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the directional terms, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom", refer to the orientation of the drawings, and the directional terms are used for illustration and understanding, but not for limiting the present invention.

The terms "first," "second," and the like in the terms of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, nor should they be construed as limiting in any way.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "secured" are to be construed broadly, e.g., the connection may be a detachable connection or a connection in a unitary structure; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

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 utility model provides a pair of can solve the above technical problem take the first embodiment of a grain wax base mould of hollow gold watchband of outsourcing type.

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 an outsourcing type hollow gold watchband wax blank mold of 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 utility model provides a hollow gold watchband of outsourcing type area grain wax base mould, its wax base that is used for making the watchband area grain, the wax base is used for the electroforming to form metal watchband area grain, therefore the surface smoothness of wax base just can decide the quality that metal watchband area grain.

The mold for the wax blank of the outsourcing type hollow gold watchband with particles 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 one end of the second main runner 3A near the second runner is communicated with the second cavity 38 through the expanding runner 3A3, so that the melted wax can be better conveyed to the periphery of the primary wax blank 21, the conveying is smoother and more efficient, and the wax injection efficiency and the wax injection quality of the second mold assembly 3 are improved.

In this embodiment, the amplification flow channels 3A3 are disposed on both sides of the second main flow channel 3A, and the two amplification flow channels 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 second cavity 38 is provided on its inner wall with core bars 39 for forming through holes in the second end bars 412, and the first end bars 212 at each end of the first central bar 211 are located between the two core bars 39 when the primary wax blank 21 is located in the second cavity 38. The second end rod 412 has small shrinkage at the periphery of the through hole 413 due to the existence of the through hole 413, so that the first end rod 212 does not need to be provided with the 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 good 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.

The utility model discloses in, first mould subassembly 1 and second mould subassembly 3 all are provided with the ejection mechanism who is used for ejecting respective notes wax product.

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 board 51 is rotatably connected with the second connecting shaft 52 (or the second control board 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 pin plate 53 is positioned between the inner end of the second control board 51 and the second lower die 32, the bottom ends of the push rod 54 and the second ejector pin 55 are connected with the second ejector pin plate 53, the push rod 54 and the second ejector pin 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 pin 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 pin 55 is opposite to the second intersection position, the ejection positions are reasonably arranged, the ejection forces of the semi-finished wax blanks 41 are very balanced, 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 manufacturing method for manufacturing the watchband grain wax blank by using the outer-wrapped hollow golden watchband grain wax blank mold 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 out 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 golden watchband of outsourcing type grain wax base mould of this embodiment annotates the wax base through the secondary and makes the wax base, and the thickness of wax is annotated to the control second that can be fine, and the wax base contracts for a short time, is difficult for forming the pit on the surface, and product quality is good, and the yield is high.

The following is the utility model provides a pair of can solve the above technical problem a hollow gold watchband of outsourcing type area grain wax base mould's second embodiment.

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 an outsourcing type hollow golden watchband wax blank mold of the present invention. Fig. 11 is a schematic structural diagram of a second mold assembly according to a second embodiment of the present invention, wherein the second mold assembly is an outsourcing type hollow gold watchband with a wax blank mold. Fig. 12 is a schematic structural view of a semi-finished wax blank of the second embodiment.

The wax injection principle of the mold for the wax blank of the encased hollow golden watchband with particles in the embodiment is basically the same as that of the first embodiment, and mainly lies in that the shape and the structure of the wax blank of the watchband with particles are different, so that the mold cavity layouts of the first mold assembly and the second mold assembly are correspondingly different.

The utility model provides a hollow gold watchband of outsourcing type area grain wax base mould, its wax base that is used for making the watchband area grain, the wax base is used for the electroforming to form metal watchband area grain, therefore the surface smoothness of wax base just can decide the quality that metal watchband area grain.

The mold for the wax blank of the outsourcing type hollow gold watchband with particles 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 runners 642 are arranged on two sides of the first main runner 14, the first runners 642 are communicated with the first mold cavity 13, the first runners 642 are arranged on two sides of the second main runner 3A, the first 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 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, so that the scope of the present invention shall be determined by the scope of the appended claims.

Claims (10)

1. The mold is characterized by comprising a first mold assembly and a second mold assembly, wherein the first mold assembly is used for manufacturing a primary wax blank, 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;

the first mold assembly comprises a first upper mold and a first lower mold, the first upper mold and the first lower mold slide relatively through a guide pillar, a first mold cavity and a first main flow channel which are communicated with each other 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, the second upper mold and the second lower mold slide relatively through a guide pillar, 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, a positioning hole used for positioning and connecting the positioning portion is formed in the second main flow channel, and 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 wax blank mold for the outsourcing type hollow gold watchband according to claim 1, wherein the first mold cavity is formed at both ends of the first main flow channel, and the second mold cavity is formed at both ends of the second main flow channel.

3. The wax blank mold for the outsourcing type hollow gold watchband according to claim 1, wherein a plurality of first runners are arranged on two sides of the first main runner, the first runners are communicated with the first mold cavity, a plurality of second runners are arranged on two sides of the second main runner, and the second runners are communicated with the second mold cavity.

4. The mold for wax-coated hollow gold watchband according to claim 1, wherein the positioning hole is formed in the second lower mold, the positioning portion is positioned and connected in the positioning hole when the second upper mold and the second lower mold are closed, and the second upper mold is in contact with a side of the first connecting portion away from the positioning portion to limit the first connecting portion in the second main flow channel.

5. The wax blank mold for the outsourcing type hollow gold watchband with grains as claimed in claim 1, wherein the cross section of the first main flow channel is arch-shaped, the concave hole is formed in the inner arc-shaped 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 both arch-shaped, and the outer dimension of the first connecting portion is matched with the first branch flow channel.

6. The mold for molding wax of an outsourcing type hollow golden watchband according to claim 5, wherein the cross-sectional aperture of the second branch flow passage is smaller than or equal to the cross-sectional aperture of the first branch flow passage.

7. The outsourcing hollow golden band 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 one end of the second main runner, which is close to the second runner, is communicated with the second mold cavity through an expansion runner.

8. The wax blank mold for the outsourcing hollow golden watchband according to claim 7, wherein the expansion flow channel is disposed on both sides of the second main flow channel.

9. The wax blank mold for the outsourcing hollow golden watch band of claim 7, wherein the amplification flow channel is inclined or curved compared with the second main flow channel.

10. The wax blank mold for the outsourcing hollow gold watchband with granules as claimed in 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;

a core rod for forming a through hole in 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;

a guide rod is arranged on the second lower die, a sliding block is connected onto 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.

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