A hinge seat wax mold forming mold

Abstract

The utility model discloses a hinge seat wax mould forming die for processing and shaping the wax mould consistent with the structure of hinge seat, and the hinge seat wax mould comprises a base and first hinge lug and second hinge lug integrally formed on the top surface of the base and arranged in opposite intervals, two fixed holes arranged at intervals are arranged on one side of the first hinge lug and the second hinge lug, the hinge seat wax mould forming die comprises a lower die, an upper die, a core assembly capable of being detachably connected with the upper die and a plurality of first cores, the upper die and the lower die can be combined to form a wax mould forming cavity for shaping the hinge seat wax mould, the core assembly can be matched with the wax mould forming cavity to form a first shaft hole distributed on the first hinge lug and a second shaft hole distributed on the second hinge lug, and the first core can be vertically inserted into the wax mould forming cavity to form the fixed hole, the utility model breaks the pain point that the traditional die can only form the basic contour, and eliminates the error hidden danger caused by artificial finishing and multiple sequence processing.

Description

Technical Field

[0001] This utility model belongs to the field of wax mold forming technology, specifically relating to a hinge seat wax mold forming mold. Background Technology

[0002] As a key connecting component in fields such as mechanical transmission, furniture hardware, and automotive parts, the structural integrity and dimensional accuracy of hinge bases directly determine the stability of subsequent assembly and the operational reliability of the overall equipment.

[0003] Hinges widely used in current industrial production exhibit typical structural complexity: the entire structure is based on a base, with hinge lugs integrally formed on top of the base at relatively intervals. To meet functional requirements, the hinge lugs must have precisely drilled shaft holes for mounting the rotating shaft (the coaxiality and inner wall smoothness of the shaft holes directly affect the rotational flexibility of the shaft). Correspondingly, the base must have corresponding fixing holes for fixing the hinge to the equipment (the positional accuracy of the fixing holes determines the assembly alignment between the hinge and the equipment). These multi-part, high-precision structural features place extremely high demands on the molding process of the hinge, especially in the lost-wax casting process, where the wax model serves as the "reference template" for subsequent casting, and its molding accuracy is a core prerequisite for determining the final quality of the hinge. However, traditional molds have significant design flaws in the overall molding process of hinge seat wax molds: existing molds are mostly integrated cavities designed for simple basic structures such as "base plate + lugs," only able to achieve the general outline of the hinge seat, completely lacking dedicated molding designs for key functional structures such as shaft holes and fixing holes. To meet usage requirements, the industry generally adopts a method of rough molding with molds followed by manual finishing or multiple sequential processing. During manual finishing, the experience of operators is relied upon to grind and enlarge shaft holes and fixing holes, which not only makes it difficult to ensure the consistency of structural features between different wax molds, but also easily leads to excessive coaxiality of shaft holes and misalignment of fixing holes due to errors in manual operation; while multiple sequential processing can improve accuracy to some extent, it requires frequent transfer of wax molds and replacement of processing equipment, significantly extending the production cycle and reducing production efficiency. Utility Model Content

[0004] In view of the technical problems existing in the prior art, this utility model provides a hinge seat wax mold forming mold.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A hinge seat wax mold is provided for processing and molding a wax mold with a structure consistent with the hinge seat. The hinge seat wax mold includes a base and a first hinge lug and a second hinge lug integrally formed on the top surface of the base and arranged at relative intervals. Each of the first hinge lug and the second hinge lug has two spaced-apart fixing holes on one side that can vertically penetrate the base. The hinge seat wax mold includes a lower mold, an upper mold that is fitted and connected above the lower mold, a core assembly that can be detachably connected to the upper mold, and a plurality of first cores. When the upper mold and the lower mold are closed, they can be assembled to form a wax mold forming cavity for molding the base, the first hinge lug, and the second hinge lug. The core assembly is fitted and connected to the upper mold and can cooperate with the wax mold forming cavity to form a first shaft hole distributed on the first hinge lug and a second shaft hole distributed on the second hinge lug. The first cores can be vertically fitted into the wax mold forming cavity to form the fixing holes.

[0006] Furthermore, the wax mold forming cavity includes a lower forming groove recessed from the top surface of the lower mold away from the upper mold, and an upper forming groove recessed from the bottom surface of the upper mold away from the lower mold. The bottom surface of the lower forming groove is provided with a forming area protruding towards the groove opening. The forming area is used to form a weight-reducing area distributed on the bottom surface of the base. Several protrusions are fixed on the forming area at horizontal and vertical intervals. Each protrusion is integrally formed from the upper surface of the forming area towards the groove opening, so that several weight-reducing grooves distributed in the weight-reducing area can be formed through the protrusions.

[0007] Furthermore, two spaced grooves are provided on both sides of the molding area for the first core to make one-to-one contact with it.

[0008] Furthermore, the first core includes a first circular core that can penetrate the upper mold and a second circular core fixed to the lower end of the first circular core, wherein the outer diameter of the first circular core is larger than the outer diameter of the second circular core.

[0009] Furthermore, the upper forming groove includes a main groove body recessed from the bottom of the upper mold towards the direction away from the lower mold and capable of cooperating with the lower forming groove, and a first ear forming cavity and a second ear forming cavity recessed from the bottom wall of the main groove body towards the direction away from the lower mold and arranged at intervals. The first ear forming cavity is used to form the first hinge ear, and the second ear forming cavity is used to form the second hinge ear. One side of the first ear forming cavity and the second ear forming cavity is provided with a through cavity that can vertically penetrate the main groove body, and the two spaced through cavities can cooperate and connect with the first core.

[0010] Furthermore, a second groove is provided on one side wall of both the first and second ear forming cavities, and an outwardly penetrating hollow cavity is provided on their opposite sides. The second groove is coaxially arranged with the hollow cavity, and one end of the second groove and one end of the hollow cavity are connected to the interior of the corresponding ear forming cavity, thereby forming a mating channel for mating the core assembly.

[0011] Furthermore, the core assembly includes a second core connected to the mating channel for forming the first shaft hole, and a third core connected to the mating channel for forming the second shaft hole. Both the second core and the third core include a first core body that can be connected to the hollow cavity and a second core body fixed to one end of the first core body and connected to the second groove. Each first core body is provided with two clearance grooves that correspond to the first core body and are used to avoid the first core body.

[0012] Furthermore, the first core is a cylindrical body with rectangular cross-sections on both sides, and the maximum radial dimension of the first core is greater than the outer diameter of the cylindrical second core.

[0013] Furthermore, both the lower mold and the upper mold are provided with wax injection half-grooves. When the upper mold and the lower mold are closed, the two wax injection half-grooves at corresponding positions can be joined together to form a wax injection channel, which can communicate with the wax mold forming cavity.

[0014] Furthermore, after the lower mold and the upper mold are closed, multiple wax mold forming cavities can be formed. Each wax mold forming cavity is connected to the core assembly to form the first shaft hole and the second shaft hole, and each wax mold forming cavity is also connected to the first core to form several fixing holes.

[0015] In summary, the beneficial effects of this utility model are as follows: 1. Improved molding precision and guaranteed assembly reliability. The mold achieves integrated molding of the hinge seat's full-function structure through the collaborative design of "dedicated cavity + precise core": the wax mold molding cavity accurately replicates the contours of the base, double ears, and U-shaped groove; the coaxial positioning of the core component and the mating channel ensures high coaxiality of the first and second shaft holes; the stepped structure of the first core and the positioning fit of the first groove ensure the positional accuracy and dimensional consistency of the fixing hole (stepped hole); the weight-reducing area and weight-reducing groove are directly formed by the protrusion of the molding area; all structures can meet assembly requirements without subsequent processing. The high-precision design of the shaft hole and fixing hole avoids problems such as hinge ear plate rotation jamming and fastener installation loosening, significantly improving the assembly alignment and operational stability of the hinge seat and the equipment. 2. Significantly optimized production efficiency and adaptable to large-scale mass production. The multi-cavity wax mold design allows for the production of multiple complete wax molds with a single mold closing and wax injection, significantly reducing the number of production cycles. The "fully integrated molding" eliminates manual trimming and multiple sequential processing steps required in traditional processes, avoiding damage and errors during wax mold transfer. The coordinated design of the wax injection channel and injection cavity simplifies the mold's material supply structure, ensuring uniform filling of wax molds in the same batch, while reducing wax loss and post-processing workload. This streamlined process significantly shortens the production cycle and improves production efficiency compared to traditional molds, fully meeting the needs of industrialized mass production. Thirdly, the mold structure is compact and reasonable, making it easier to use and maintain. The mold adopts a modular design, with clear functional divisions for the upper and lower mold's molding cavities, core components, and the first core, all working together without interference. The through-cavity of the support ear molding cavity provides a dedicated installation channel for the first core, and the avoidance groove of the core component avoids spatial conflicts with the first core. Combined with the integrated channel, the core positioning and guiding functions are integrated, eliminating the need for additional complex positioning mechanisms and making the overall mold structure more compact. The detachable core components and standardized core structure facilitate mold debugging, parts replacement and daily maintenance, reducing operation difficulty and maintenance costs, while extending the service life of the mold. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the hinge seat wax mold produced by the hinge seat wax mold forming mold.

[0017] Figure 2 yes Figure 1 A schematic diagram of the base bottom of the wax mold for the central hinge seat.

[0018] Figure 3 yes Figure 1 A schematic diagram of the hinge seat wax mold after separating the remaining material.

[0019] Figure 4 This is a schematic diagram of the structure of a hinge seat wax mold forming mold provided by this utility model.

[0020] Figure 5 yes Figure 4 Exploded view.

[0021] Figure 6 This is a schematic diagram of the structure of the bottom surface of the upper mold in this utility model.

[0022] Figure 7 yes Figure 6 Side view.

[0023] Figure 8 yes Figure 7 Sectional view along the AA direction.

[0024] Figure 9 This is a three-dimensional structural diagram of the core component of this utility model.

[0025] In the diagram, 100-hinge seat wax model, 110-base, 111-fixing hole, 112-weight reduction area, 1120-weight reduction groove, 120-first hinge support, 121-first shaft hole, 130-second hinge support, 131-second shaft hole, 140-excess material, 150-U-shaped groove, 200-lower mold, 210-lower forming groove, 211-forming area, 2110-protrusion, 212-first groove, 220-wax injection half-groove, 230-injection... Material cavity, 300-upper mold, 310-upper forming groove, 311-main groove body, 312-first ear forming cavity, 313-second ear forming cavity, 320-through cavity, 330-second groove, 340-hollow cavity, 400-core assembly, 410-second core, 420-third core, 421-first core body, 4210-avoidance groove, 422-second core body, 500-first core, 510-first round core, 520-second round core. Detailed Implementation

[0026] The present invention will be further illustrated below with reference to specific figures.

[0027] Please see Figure 1 This refers to the hinge seat wax model 100 manufactured by the hinge seat wax model molding die. The hinge seat wax model 100 includes a base 110 and a first hinge lug 120 and a second hinge lug 130 integrally formed on the top surface of the base 110 and arranged at relative intervals. Please refer to [link / reference]. Figure 2 The base 110 has a weight-reducing area 112 on its bottom surface, and several weight-reducing grooves 1120 are distributed in the weight-reducing area 112 at intervals. The first hinge lug 120 and the second hinge lug 130 form a U-shaped groove 150 for installing the hinge lug plate. Each side of the first hinge lug 120 and the second hinge lug 130 has two spaced fixing holes 111 that can penetrate the base 110 vertically.

[0028] Please see Figure 4 and Figure 5 This utility model provides a hinge seat wax mold forming mold for processing and forming a wax mold with the same structure as the hinge seat. The hinge seat wax mold forming mold includes a lower mold 200, an upper mold 300 connected above the lower mold 200, a core assembly 400 detachably connected to the upper mold 300, and several first cores 500. When the upper mold 300 and the lower mold 200 are closed, they can be assembled to form a wax mold forming cavity for forming a base 110, a first hinge lug 120, and a second hinge lug 130. The core assembly 400 is connected to the upper mold 300 and can cooperate with the wax mold forming cavity to form a first shaft hole 121 distributed on the first hinge lug 120 and a second shaft hole 131 distributed on the second hinge lug 130. The first cores 500 can be vertically fitted into the wax mold forming cavity to form a fixing hole 111. It solves the pain point of traditional molds that "the integrated cavity can only form the basic outline and lacks special forming designs such as shaft holes and fixing holes 111", eliminates the error risks caused by manual trimming and multiple sequential processing, improves product precision, significantly shortens the production cycle, and thus improves production efficiency.

[0029] After the lower mold 200 and the upper mold 300 are closed, multiple wax mold forming cavities are formed. Each wax mold forming cavity is connected to the core assembly 400 to form the first shaft hole 121 and the second shaft hole 131. Each wax mold forming cavity is also connected to the first core 500 to form several fixing holes 111. This enables simultaneous forming of multiple wax molds, producing multiple complete hinge seat wax molds 100 in one operation. Simultaneous forming of multiple cavities can significantly increase the number of wax molds produced in a single batch, reduce the number of cycles of mold closing, wax injection, and demolding, and adapt to the needs of large-scale mass production.

[0030] Both the lower mold 200 and the upper mold 300 are provided with wax injection half-grooves 220. When the upper mold 300 and the lower mold 200 are closed, the two corresponding wax injection half-grooves 220 can be joined to form a wax injection channel. The wax injection channel is distributed between adjacent wax mold forming cavities, and the wax mold forming cavity is connected to the wax injection channel through the injection cavity 230. After wax is injected into the wax injection channel, the wax enters the wax mold forming cavity through the injection cavity 230 to form the mold. After demolding, residual material 140 will be formed on the hinge seat wax mold 100. Please refer to [link / reference]. Figure 3 After separating the excess material 140, a complete hinge seat wax model 100 can be obtained. Adjacent chambers share the wax injection channel, and the wax flow path length and resistance are basically the same, avoiding the difference in filling speed of each wax model caused by single-cavity feeding. This ensures that the size and density of wax models in the same batch are completely uniform. Single-channel multi-cavity feeding eliminates the need to design a separate wax injection structure for each cavity, simplifying mold design while reducing the total volume of the wax injection channel, reducing wax loss, and reducing the material cost per unit wax model.

[0031] The wax model molding cavity includes a lower molding groove 210 recessed from the top of the lower mold 200 toward the direction away from the upper mold 300, and an upper molding groove 310 recessed from the bottom of the upper mold 300 toward the direction away from the lower mold 200. The bottom surface of the lower molding groove 210 has a molding area 211 protruding toward the groove opening. The molding area 211 is used to mold weight-reducing areas 112 distributed on the bottom surface of the base 110. Several horizontally and vertically spaced protrusions 2110 are fixed on the molding area 211. Each protrusion 2110 is integrally formed from the upper surface of the molding area 211 toward the direction near the groove opening, thereby forming several weight-reducing grooves 1120 distributed within the weight-reducing areas 112. The weight-reducing structure is precisely molded by using the molding area 211 of the lower molding groove 210 and the horizontally and vertically spaced protrusions 2110 to directly and integrally mold the weight-reducing area 112 and the weight-reducing groove 1120 on the bottom surface of the hinge base 110, eliminating the need for subsequent processing. This achieves a balance between functionality and aesthetics. The weight-reducing groove 1120 reduces the weight of the finished hinge base, meeting the requirements for lightweight design. At the same time, the mold directly molds this structure through the protrusions 2110, avoiding the additional process of "milling and weight reduction after integral molding," thus improving efficiency.

[0032] Two spaced grooves 212 are provided on both sides of the molding area 211 for the first core 500 to make one-to-one contact with each other. The first grooves 212 provide a precise installation reference for the first core 500 (for molding the fixing hole 111), ensuring that the first core 500 is accurately positioned in the wax mold molding cavity, thereby ensuring the positional accuracy of the molded fixing hole 111.

[0033] The first core 500 includes a first circular core 510 that can penetrate the upper mold 300 and a second circular core 520 fixed to the lower end of the first circular core 510. The outer diameter of the first circular core 510 is larger than the outer diameter of the second circular core 520. The fixing hole 111 formed by the first core 500 is a stepped hole. The first circular core 510 (large outer diameter) forms the large diameter section of the stepped hole, and the second circular core 520 (small outer diameter) forms the small diameter section of the stepped hole. This stepped hole structure is usually used to fit fasteners with steps (such as stepped bolts and washer screws). The annular shoulder can axially limit the fastener, preventing the fastener from being installed too deep or loosening, while improving the stability of the connection between the hinge seat and the equipment. The stepped design of the first core 500 can directly obtain this functional stepped hole in one molding without subsequent processing, which ensures the hole position accuracy and simplifies the process.

[0034] Please see Figure 6The upper forming groove 310 includes a main groove body 311 recessed from the bottom of the upper mold 300 away from the lower mold 200 and capable of cooperating with the lower forming groove 210, and a first ear forming cavity 312 and a second ear forming cavity 313 recessed from the bottom wall of the main groove body 311 away from the lower mold 200 and arranged at intervals. The first ear forming cavity 312 is used to form the first hinge ear 120, and the second ear forming cavity 313 is used to form the second hinge ear 130. The main groove body 311 cooperates with the lower forming groove 210 to ensure the overall contour accuracy of the base 110; the first ear forming cavity 312 and the second ear forming cavity 313 are individually recessed to accurately replicate the shape and relative spacing of the first hinge ear 120 and the second hinge ear 130, while naturally enclosing the U-shaped groove 150 structure. Both the first ear forming cavity 312 and the second ear forming cavity 313 have through cavities 320 on one side that can vertically penetrate the main groove 311. The two spaced through cavities 320 can be connected to the first core 500. The first core 500 is fitted into the through cavity 320 and its bottom end abuts against the first groove 212. The through cavity 320 vertically penetrates the main groove 311 and is precisely fitted to the first core 500, which clarifies the installation path of the first core 500 and ensures that the first core 500 can be vertically fitted into the wax mold forming cavity to accurately form the fixing hole 111. At the same time, it meets the requirements of simultaneous forming of "base 110 + double ears + U-shaped groove 150 + fixing hole 111", eliminating the need for sequential processing, reducing damage or dimensional deviations during wax mold transfer, and improving production continuity.

[0035] Please see Figure 7 and Figure 8Each of the first and second ear forming cavities 312 and 313 has a second groove 330 on one side wall, and a hollow cavity 340 extending outward on the opposite side of each groove 330. The second groove 330 and the hollow cavity 340 are coaxially aligned, and one end of the second groove 330 and one end of the hollow cavity 340 are connected to the interior of the corresponding ear forming cavity, thus forming a mating channel for the core assembly 400. The coaxial connection between the second groove 330 and the hollow cavity 340 forms a complete mating channel, providing a clear installation path and positioning reference for the core assembly 400 (second core 410, third core 420), ensuring that the core assembly 400 can be accurately embedded and mated with the ear forming cavity. The mating channel connects to the interior of the ear forming cavity, allowing the core assembly 400 to form the shaft hole without affecting the complete forming of the ear outline, achieving integrated synchronous forming of the "ear shape + shaft hole". The positioning and guiding functions of the core assembly 400 are integrated into the side wall design of the lug forming cavity, eliminating the need for additional complex positioning mechanisms and making the mold structure more compact. Simultaneously, the clearly defined mating channels facilitate the installation and disassembly of the core assembly 400, reducing the difficulty of mold debugging. The hollow cavity 340 is interconnected with the vertical cavity. Through the layout of "a groove on one side + a hollow cavity 340 on the opposite side," the installation space of the first core 500 (the core forming the fixing hole 111) is cleverly avoided, preventing spatial interference between different cores and ensuring that the fixing hole 111 and the shaft hole can be formed independently and precisely, while also guaranteeing the integrity of the lug structure.

[0036] Please see Figure 9 The core assembly 400 includes a second core 410 connected to a mating channel for forming a first shaft hole 121, and a third core 420 connected to the mating channel for forming a second shaft hole 131. Both the second core 410 and the third core 420 include a first core 421 connected to a hollow cavity 340 and a second core 422 fixed to one end of the first core 421 and connected to a second groove 330. Each first core 421 has two clearance grooves 4210 corresponding to the first core 500 and used to avoid the first core 500. The second core 410 and the third core 420 correspond to the first shaft hole 121 and the second shaft hole 131, respectively. Through the adaptation of the "first core 421 + second core 422" with the mating channel (hollow cavity 340 + second groove 330), the independent and synchronous forming of the first shaft hole 121 and the second shaft hole 131 is achieved, ensuring the positional correspondence between the shaft hole and the support lug. The forming process of the shaft hole and the fixing hole 111 can be separated without the need for separation. The synchronous forming of "double shaft hole + multiple fixing holes 111" is achieved through the design of the clearance groove 4210, which completely eliminates the need for sequential processing or manual adjustment steps, and further improves production efficiency.

[0037] The first core 421 is a cylindrical body with rectangular cross-sections on both sides. The maximum radial dimension of the first core 421 is larger than the outer diameter of the cylindrical second core 422. Clearance grooves 4210 are distributed on the first core 421. The design of the first core 421 having a larger maximum radial dimension than the second core 422 results in a stepped shaft hole. The second core 422 (cylindrical, small outer diameter) forms the small-diameter section of the stepped hole (the core mating section of the shaft hole, used for tight contact with the rotating shaft to ensure rotational stability). The first core 421 (large size) forms the large-diameter section of the stepped hole. The difference in size between the two forms an annular shoulder. This annular shoulder provides axial restraint for the rotating shaft, bushing, or hinge lug, preventing excessive installation depth or axial movement of components and ensuring the connection stability between the hinge seat and the shaft-connected components. The large-diameter section can accommodate assembly clearance or auxiliary components such as anti-loosening washers and retaining rings, eliminating the need for additional machining of installation grooves and simplifying the subsequent assembly process of the hinge seat.

[0038] This hinge seat wax mold molding die offers several advantages: 1. Improved molding precision, ensuring assembly reliability. The die utilizes a collaborative design of a "dedicated cavity + precise core" to achieve integrated molding of the hinge seat's full-function structure: the wax mold molding cavity precisely replicates the contours of the base 110, double lugs, and U-shaped groove 150; the coaxial positioning of the core assembly 400 and the mating channel ensures high coaxiality of the first shaft hole 121 and the second shaft hole 131; the stepped structure of the first core 500 and the positioning fit of the first groove 212 ensure the positional accuracy and dimensional consistency of the fixing hole 111 (stepped hole); the weight-reducing area 112 and the weight-reducing groove 1120 are directly formed from the protrusion 2110 of the molding area 211; all structures meet assembly requirements without subsequent processing. The high-precision design of the shaft hole and fixing hole 111 avoids problems such as hinge lug rotation jamming and fastener loosening, significantly improving the alignment and operational stability of the hinge seat with the equipment. 2. Significantly optimized production efficiency, suitable for large-scale mass production. The multi-cavity wax mold design allows for the production of multiple complete wax molds with a single mold closing and wax injection, significantly reducing the number of production cycles. The "fully integrated molding" eliminates manual trimming and multiple sequential processing steps required in traditional processes, avoiding damage and errors during wax mold transfer. The coordinated design of the wax injection channel and injection cavity 230 simplifies the mold's material supply structure, ensuring uniform filling of wax molds in the same batch, while reducing wax waste and post-processing workload. This streamlined process significantly shortens the production cycle and improves production efficiency compared to traditional molds, fully meeting the needs of industrialized mass production. Thirdly, the mold's compact and rational structure makes it more convenient to use and maintain. The mold adopts a modular design. The molding cavities of the upper mold 300 and lower mold 200, the core assembly 400, and the first core 500 have clearly defined functions and cooperate without interference. The through cavity 320 of the support ear molding cavity provides a dedicated installation channel for the first core 500. The clearance groove 4210 of the core assembly 400 avoids spatial conflicts with the first core 500. Together with the channel, it integrates core positioning and guiding functions, eliminating the need for additional complex positioning mechanisms and making the overall mold structure more compact. The detachable core assembly 400 and standardized core structure facilitate mold debugging, parts replacement, and daily maintenance, reducing operating difficulty and maintenance costs, while extending the mold's service life.

[0039] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structure made using the contents of this utility model specification and drawings, whether directly or indirectly applied to other related technical fields, shall also be within the patent protection scope of this utility model.

Claims

1. A hinge seat wax mold forming die, used to process and form a wax mold with a structure consistent with the hinge seat, the hinge seat wax mold including a base and a first hinge lug and a second hinge lug integrally formed on the top surface of the base and arranged at relative intervals, wherein each of the first hinge lug and the second hinge lug has two spaced fixing holes on one side that can perpendicularly penetrate the base, characterized in that: The system includes a lower mold, an upper mold connected above the lower mold, a core assembly detachably connected to the upper mold, and several first cores. When the upper mold and the lower mold are closed, they can be assembled to form a wax mold forming cavity for molding the base, the first hinge lug, and the second hinge lug. The core assembly is connected to the upper mold and can cooperate with the wax mold forming cavity to form a first shaft hole distributed on the first hinge lug and a second shaft hole distributed on the second hinge lug. The first cores can be vertically fitted into the wax mold forming cavity to form the fixing hole.

2. The hinge seat wax mold forming die according to claim 1, characterized in that: The wax mold forming cavity includes a lower forming groove recessed from the top surface of the lower mold away from the upper mold, and an upper forming groove recessed from the bottom surface of the upper mold away from the lower mold. The bottom surface of the lower forming groove is provided with a forming area protruding towards the groove opening. The forming area is used to form a weight-reducing area distributed on the bottom surface of the base. Several protrusions are fixed on the forming area at horizontal and vertical intervals. Each protrusion is integrally formed from the upper surface of the forming area towards the groove opening, so that several weight-reducing grooves distributed in the weight-reducing area can be formed through the protrusions.

3. The hinge seat wax mold forming die according to claim 2, characterized in that: Two spaced grooves are provided on both sides of the molding area for the first core to make one-to-one contact with it.

4. The hinge seat wax mold forming die according to claim 3, characterized in that: The first core includes a first circular core that can penetrate the upper mold and a second circular core fixed to the lower end of the first circular core, wherein the outer diameter of the first circular core is larger than the outer diameter of the second circular core.

5. The hinge seat wax mold forming die according to claim 2, characterized in that: The upper forming groove includes a main groove body that is recessed from the bottom of the upper mold towards the direction away from the lower mold and can cooperate with the lower forming groove, and a first ear forming cavity and a second ear forming cavity that are recessed from the bottom wall of the main groove body towards the direction away from the lower mold and are arranged at intervals. The first ear forming cavity is used to form the first hinge ear, and the second ear forming cavity is used to form the second hinge ear. One side of the first ear forming cavity and the second ear forming cavity is provided with a through cavity that can vertically penetrate the main groove body. The two through cavities arranged at intervals can cooperate and connect with the first core.

6. The hinge seat wax mold forming die according to claim 5, characterized in that: The first and second ear forming cavities each have a second groove on one side wall and an outwardly penetrating hollow cavity on their opposite sides. The second groove and the hollow cavity are coaxially aligned, and one end of the second groove and one end of the hollow cavity are connected to the interior of the corresponding ear forming cavity, thereby forming a mating channel for mating the core assembly.

7. The hinge seat wax mold forming die according to claim 6, characterized in that: The core assembly includes a second core connected to the mating channel for forming the first shaft hole, and a third core connected to the mating channel for forming the second shaft hole. Both the second core and the third core include a first core body that can be connected to the hollow cavity and a second core body fixed to one end of the first core body and connected to the second groove. Each first core body has two clearance grooves that correspond to the positions of the first core body and are used to avoid the first core body.

8. The hinge seat wax mold forming die according to claim 7, characterized in that: The first core is a cylindrical body with rectangular cross-sections on both sides, and the maximum radial dimension of the first core is greater than the outer diameter of the cylindrical second core.

9. The hinge seat wax mold forming die according to any one of claims 1-8, characterized in that: Both the lower mold and the upper mold are provided with wax injection half-grooves. When the upper mold and the lower mold are closed, the two wax injection half-grooves at corresponding positions can be joined together to form a wax injection channel, which can communicate with the wax mold forming cavity.

10. The hinge seat wax mold forming die according to claim 9, characterized in that: After the lower mold and the upper mold are closed, multiple wax mold forming cavities can be formed. Each wax mold forming cavity is connected to the core assembly to form the first shaft hole and the second shaft hole. Each wax mold forming cavity is also connected to the first core to form several fixing holes.

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