A connector wax mold forming mold

Abstract

The utility model discloses a connecting piece wax mould forming die for processing connecting piece wax mould, and the connecting piece wax mould includes connecting plate, a plurality of connecting holes arranged on the connecting plate, support part connected with the connecting plate at one end, connecting disc connected with the other end of the support part and connecting main part arranged on one side of the connecting disc, and the connecting main part includes circular platform, a plurality of arc lugs, a plurality of connecting lugs, limiting gap and locking side wing, and the connecting main part has a through cavity inside, the connecting piece wax mould forming die includes the upper die with upper cavity, the lower die with lower cavity connected below the upper die, the first slider and the second slider capable of being detachably connected with the upper cavity and the lower cavity, the first core pulling, the second core pulling abutting with the first core pulling at one end for forming the through cavity and a plurality of third core pullings used for forming the connecting hole in one to one, and the upper cavity, the lower cavity, the first slider and the second slider can be spliced to form a forming cavity capable of forming the wax mould core feature, and the precision and the efficiency are improved.

Description

Technical Field

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

[0002] Currently, a connector used for connecting to ventilation ducts in a closed environment consists of two symmetrically structured connectors that cooperate with each other. This connector must simultaneously meet the requirements of connection stability, ease of assembly, and structural strength. Its structural design exhibits significant complexity: the whole includes a connecting plate for docking with the pipe or fixed structure, with several connecting holes distributed on the connecting plate for initial positioning and fixation; a support part connected to the connecting plate at one end provides load-bearing capacity; a connecting plate connected to the other end of the support part provides a reference surface for subsequent mating; the connecting body, coaxially fixed to the side of the connecting plate away from the support part, is the core mating structure. It not only integrates irregular features such as a frustum, several arc-shaped lugs, several connecting lugs, a limiting notch on the limiting lugs for docking with the arc-shaped lugs, and locking side wings to achieve rapid and accurate docking and locking of the two connectors, but also needs to form a through cavity running along the central axis inside to ensure the airflow of the ventilation duct.

[0003] Due to the complex structure and high precision requirements of this connector, its manufacturing must rely on precision casting. Wax pattern making, as a core pre-process of precision casting, directly determines whether the final connector meets usage requirements. However, existing wax pattern making molds are completely inadequate for the connector's complex structure and high-precision forming needs. During the overall forming process, the mold lacks dedicated forming designs for each structure, making it difficult to directly form the core mating features of the connector (such as the connecting plate with rounded corners, cylindrical support, circular connecting disc, the frustum and lug structure of the connecting body, and through cavities) through a single mold-closing action. These features require repeated manual adjustments or multiple processing steps. However, manual adjustments and multiple processing steps cannot guarantee the consistency and precision stability of each feature, affecting production efficiency and reducing the precision of the wax pattern. Utility Model Content

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

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A wax model forming mold for connectors is used to process and form wax models with the same structure as the connectors. The connector wax model includes a connecting plate, a plurality of connecting holes distributed on the connecting plate, a support portion connected to the connecting plate at one end, a connecting disc connected to the other end of the support portion, and a connecting body coaxially fixed to the side of the connecting disc away from the support portion. The connecting body includes a frustum, a plurality of arcuate lugs, a plurality of connecting lugs, a limiting notch, and locking side wings. The connecting body has a through cavity extending along the central axis of the connecting body and extending outward at both ends. The connecting bodies of two symmetrically structured connectors can cooperate and connect with each other. This connector wax model forming mold includes... The system includes an upper mold with an upper cavity, a lower mold connected below the upper mold and having a lower cavity, a first slider and a second slider detachably connected to the upper cavity and the lower cavity, a first core puller, a second core puller with one end abutting against the first core puller for forming the through cavity, and a pair of third core pullers for forming the connecting hole. The upper cavity, lower cavity, first slider, and second slider can be assembled to form a molding cavity. The molding cavity includes a first molding part for forming the connecting plate, a second molding part for forming the support part, a third molding part for forming the connecting disc, and a fourth molding part that cooperates with the first core puller for forming the connecting body.

[0006] Furthermore, the first molding part includes a first molding half-groove recessed from the bottom of the upper mold toward the direction away from the lower mold, and a second molding half-groove recessed from the top of the lower mold toward the direction away from the upper mold. The connection between the groove wall and the bottom of the first molding half-groove and the second molding half-groove is a smooth curved surface transition. When the mold is closed, the first molding half-groove and the second molding half-groove can close together to form the first molding part, thereby forming a square connecting plate with rounded corners through the first molding part.

[0007] Furthermore, the inner sidewalls of the first and second molded half-grooves are each provided with at least two spaced first slots. Each first slot is provided with a corresponding first insertion cavity that is coaxial with the first slot. The first insertion cavity is a hollow cavity with one end communicating with the first or second molded half-grooves, and the other end of the first insertion cavity communicating with the outside. The first insertion cavity and the coaxially distributed first slots cooperate to form a first core-pulling hole for the third core to be inserted. The third core is used to cooperate with the first core-pulling hole to form the connecting hole.

[0008] Furthermore, the second molding part is connected to one side of the first molding part and communicates with the first molding part. The second molding part includes a first semi-circular groove recessed from the bottom surface of the upper mold away from the lower mold, and a second semi-circular groove recessed from the top surface of the lower mold away from the upper mold. When the mold is closed, the first semi-circular groove and the second semi-circular groove can be closed to form the second molding part, thereby forming a cylindrical support part through the second molding part.

[0009] Furthermore, the third forming part is connected to one side of the second forming part and communicates with the second forming part. The third forming part has a third semi-circular groove formed by recessing from the bottom surface of the upper mold away from the lower mold, and a fourth semi-circular groove formed by recessing from the top surface of the lower mold away from the upper mold. When the mold is closed, the third semi-circular groove and the fourth semi-circular groove can be closed to form the third forming part, thereby forming a circular connecting plate through the third forming part.

[0010] Furthermore, after the upper mold and the lower mold are closed, they can form a first sliding cavity for installing the first slider and a second sliding cavity for installing the second slider. When the first slider is installed in the first sliding cavity and the second slider is installed in the second sliding cavity, they can be assembled to form a molding cavity with one end connected to the third molding part. The other end of the molding cavity is open to the outside. The portion of the molding cavity adjacent to the third molding part is defined as a molding section, while the remaining portion is defined as a second core-pulling hole for the first core-pulling insertion.

[0011] Furthermore, the fourth molding part includes at least three molding protrusions that protrude from the inner wall of the molding section toward the center of the molding section and are spaced apart around the center of the molding section; a plurality of molding recesses that are correspondingly provided on the end face of the molding protrusions; a plurality of first molding grooves that are correspondingly distributed between every two adjacent molding protrusions and recessed away from the center of the molding section; and a plurality of second molding grooves that are provided on the outer wall of the first core puller and whose positions correspond one-to-one with the first molding grooves. One end of the forming protrusion is connected to the third forming part, and a plurality of arc-shaped forming protrusions can be used to form a frustum with an outer diameter smaller than the connecting disc and fixed to one side of the connection. The arc-shaped molding recess is distributed at one end of the molding protrusion away from the third molding part, and one side of the molding recess is connected to the first molding groove. The molding recess is used to form an arc-shaped support ear with one end fixed to the frustum and the other end extending horizontally away from the center of the frustum. The opening end of the first molding groove communicates with the third molding part, while the other opposite end extends toward the direction close to the second core-pulling hole. The first molding groove is used to form a connecting lug that is connected to the connecting plate at one end. One of the first molding grooves has a side wing molding groove recessed toward the direction away from the center of the molding section. The side wing molding groove is used to form the locking side wings distributed on the outer wall of the connecting lug. The second forming groove is used to form a limiting notch provided on the inner wall of the connecting lug.

[0012] Furthermore, the end face of the first core-pulling insertion end is provided with a recessed area, and a plurality of spaced abutting protrusions are fixed in the recessed area. When the first core-pulling end is inserted into the second core-pulling hole, the plurality of abutting protrusions can abut against the molded protrusion end face one by one. The shape of the abutting protrusion is adapted to the part of the molded protrusion end face where the molded recess is not provided. The recessed area has a core-pulling groove in the middle for inserting the second core, and the second core abuts against the core-pulling groove to form the through cavity.

[0013] Furthermore, the second forming groove includes a first notch located on one side of the abutting protrusion and extending outward, and a first recessed area and a second recessed area recessed from the outer wall of the first core puller toward the interior of the first core puller. One end of the first recessed area is connected to the first notch, and the other opposite end is connected to the second recessed area. The recessed depth of the first recessed area is less than the recessed depth of the second recessed area. The limiting notch can be processed by the second forming groove.

[0014] Furthermore, it also includes a casting cavity located at the end of the molding cavity away from the first core-pulling end, the casting cavity being connected to the outside through a casting channel provided on the lower mold.

[0015] In summary, the beneficial effects of this utility model are as follows: 1. The mold, through the precise assembly of the upper mold, lower mold, slider, and core puller, provides dedicated cavities for all structures of the connecting parts (connecting plates with rounded corners, cylindrical support parts, circular connecting discs, connecting bodies with frustums / connecting lugs / locking side wings, through cavities, and connecting holes). This eliminates the need for subsequent manual molding, polishing, or secondary processing, allowing for direct one-time molding of a complete wax model, solving problems such as feature deformation and material shortages caused by missing cavities in traditional molds. 2. It eliminates the need for manual trimming and multiple processing steps in traditional processes, enabling wax model molding to be completed in a single mold closing operation, thus shortening the production time per piece. Simultaneously, the buffer material replenishment design of the casting cavity avoids rework due to insufficient wax material, further improving production continuity. 3. All cavity dimensions are precisely solidified through mold processing, ensuring complete uniformity of key parameters such as rounded corner radius, lug thickness, and side wing position for each batch of wax models. This avoids individual differences caused by manual operation, significantly reducing the scrap rate in subsequent casting and meeting the needs of industrialized mass production. Fourth, regarding the core mating structure of the connecting body (arc-shaped lug, limiting notch, locking side wing), the combination of "forming protrusion - recess - groove" in the fourth forming part and the stepped design of the deep and shallow recesses in the second forming groove ensure that the lug curvature, notch depth, and side wing angle match the design requirements, providing a precise structural foundation for the rotational docking and bolt locking of the two connecting parts. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the wax mold of the connector processed by this utility model.

[0017] Figure 2 yes Figure 1 A schematic diagram of the structure of the connecting parts with excess wax blocks.

[0018] Figure 3 This is a schematic diagram of the structure of the connector in this utility model after the wax mold is formed into a connector and the two connectors are in a connected state.

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

[0020] Figure 5 yes Figure 4 Exploded view.

[0021] Figure 6 yes Figure 4 A schematic diagram of the three-dimensional structure of the upper and middle molds.

[0022] Figure 7 yes Figure 6 A schematic diagram of the upper and middle molds equipped with a second slider.

[0023] Figure 8 yes Figure 4 The main view.

[0024] Figure 9 yes Figure 8 Sectional view along the AA direction.

[0025] Figure 10 yes Figure 4 Side view.

[0026] Figure 11 yes Figure 10 Sectional view along the BB direction.

[0027] Figure 12 This utility model presents a structural diagram showing the upper and lower molds in a closed state.

[0028] Figure 13 yes Figure 4 Rear view.

[0029] Figure 14 yes Figure 13 A cross-sectional view along the CC direction.

[0030] Figure 15 This is a three-dimensional structural diagram of the first core-pulling mechanism in this utility model.

[0031] Figure 16 This is a schematic diagram of the connector in the mold-opening state after the wax mold is formed.

[0032] In the diagram, 100-connector wax model, 110-connecting plate, 111-connecting hole, 112-excess wax block, 120-support part, 130-connecting plate, 140-connecting body, 141-frustum, 142-arc support ear, 143-connecting support ear, 144-locking side wing, 145-limiting notch, 150-through cavity, 200-upper mold, 300-lower mold, 400-first molding part, 410-first molding half-groove, 420-second molding half-groove, 430-first slot, 431-third core puller, 440-second molding part, 441-first semi-circular groove, 442-second half-groove Circular groove, 450-Third forming part, 451-Third semi-circular groove, 452-Fourth semi-circular groove, 460-Second sliding cavity, 470-Second core-pulling hole, 480-Forming protrusion, 481-Forming recess, 490-First forming groove, 500-First slider, 510-Side wing forming groove, 600-Second slider, 700-First core-pulling, 710-Recessed area, 711-Abutting protrusion, 720-Core-pulling groove, 730-Second forming groove, 731-First notch, 732-First recessed area, 733-Second recessed area, 800-Second core-pulling, 900-Pouring cavity. Detailed Implementation

[0033] The present invention will be further explained below with reference to specific illustrations.

[0034] Please see Figure 1 and Figure 3 As shown, the current connector includes two symmetrically arranged connectors. The connector wax model 100 includes a connecting plate 110, a plurality of connecting holes 111 distributed on the connecting plate 110, a support part 120 connected to the connecting plate 110 at one end, a connecting plate 130 connected to the other end of the support part 120, and a connecting body 140 coaxially fixed to the side of the connecting plate 130 away from the support part 120. The connecting body 140 includes a frustum 141, a plurality of arcuate lugs 142, a plurality of connecting lugs 143, a limiting notch 145, and a locking side wing 144. The connecting body 140 has a through cavity 150 extending along the central axis of the connecting body 140 and extending outward at both ends. The connecting bodies 140 in the two symmetrically structured connectors can cooperate and connect with each other. The two connectors are aligned and rotated so that the arc-shaped lugs 142 in both connectors are fixed in the corresponding limiting notches 145. The two locking wings 144 are also in a corresponding position. Screw holes are opened on the locking wings 144, and the two connectors are further locked by bolts screwed into the locking screw holes.

[0035] Please see Figures 4-7This utility model provides a wax model molding die for a connector, used to process and mold a wax model with the same structure as the connector. It includes an upper mold 200 with an upper cavity, a lower mold 300 connected below the upper mold 200 and having a lower cavity, a first slider 500 and a second slider 600 that can slide with the upper and lower cavities, a first core puller 700, a second core puller 800 whose end abuts against the first core puller 700 for molding a through cavity 150, and a pair of third core pullers 431 for molding a connecting hole 111. The upper cavity, lower cavity, first slider 500, and second slider 600 can be assembled to form a molding cavity. The molding cavity includes a first molding part 400 for molding a connecting plate 110, a second molding part 440 for molding a support part 120, a third molding part 450 for molding a connecting disc 130, and a fourth molding part that cooperates with the first core puller 700 for molding a connecting body 140. By assembling the upper mold 200, lower mold 300, first slider 500, second slider 600, and various core pullers, a complete molding cavity is formed, enabling simultaneous molding of all features. High-precision features can be directly molded without manual trimming or multiple processing steps, solving the problem of poor precision and consistency. Dedicated molding structures (such as the first core puller 700, second core puller 800, and third core puller 431) directly mold the core mating features, ensuring the coaxiality of the through cavity 150, the positional accuracy of the connecting hole 111, and the fitting accuracy of the support lug and the limiting notch 145, fully meeting the high-precision requirements of the connector. Eliminating the need for manual trimming and multiple processing steps, a single mold closing completes the wax model molding, reducing processes, shortening working time, and lowering labor costs.

[0036] The wax mold for the connector also includes a casting cavity 900 located at the end of the molding cavity furthest from the first core puller 700. The casting cavity 900 communicates with the outside through a casting channel (not shown in the figure) provided on the lower mold 300. After demolding, please refer to... Figure 2 The wax material in the casting cavity 900 will form excess wax blocks 112 on the connector wax mold 100. After separating the excess wax blocks 112, the complete connector wax mold 100 is obtained. The design of the casting cavity 900 and the casting channel can ensure that the wax material can smoothly and completely fill the complex molding cavity. It is a key auxiliary structure for achieving high-precision one-time molding of wax molds. It can continuously provide sufficient wax material to the molding cavity and avoid defects such as local material shortage and air bubbles caused by poor wax flow.

[0037] Please see Figure 8 and Figure 9The first molding part 400 includes a first molding half-groove 410 recessed from the bottom of the upper mold 200 in a direction away from the lower mold 300, and a second molding half-groove 420 recessed from the top of the lower mold 300 in a direction away from the upper mold 200. The connections between the walls and bottoms of the first molding half-groove 410 and the second molding half-groove 420 are made with smooth curved surfaces. After mold closing, the first molding half-groove 410 and the second molding half-groove 420 can close together to form the first molding part 400, thereby forming a square connecting plate 110 with rounded corners. The connections between the walls and bottoms of the first molding half-groove 410 and the second molding half-groove 420 are made with smooth curved surfaces, forming a rounded corner cavity at the edge of the connecting plate 110 after mold closing. This design eliminates the need for subsequent manual grinding or finishing, directly molding a rounded corner structure that meets the requirements in one step, ensuring the consistency of the rounded corner radius and the accuracy of the position. The connecting plate 110, as the "basic support part" of the wax model, has a large area and is closely related to the support part 120, connecting hole 111 and other structures. It adopts a split design of the first molding half groove 410 of the upper mold 200 and the second molding half groove 420 of the lower mold 300. When the mold is closed, they are assembled to form a complete cavity. When demolding, the upper and lower molds 300 can be separated to achieve "bidirectional separation", avoiding the wax model from getting stuck or being stretched and deformed due to the overall closure of the cavity.

[0038] The inner walls of the first forming half-groove 410 and the second forming half-groove 420 are each provided with at least two spaced first slots 430. Each first slot 430 has a corresponding first insertion cavity coaxial with it. The first slot 430 is recessed towards the second forming part 440, and the first insertion cavity is located on the upper mold 200 or the lower mold 300. The first insertion cavity is a hollow cavity with one end communicating with the first forming half-groove 410 or the second forming half-groove 420, and the other end communicating with the outside. The first insertion cavity and the first slot 430 at the corresponding coaxial position can form a first core-pulling hole for the insertion of the third core-pulling 431. The third core-pulling 431 and the first core-pulling hole are used to form the connecting hole 111. Through the combination structure of slots and insertion cavities, a precise positioning and installation channel is provided for the third core-pulling 431, which can solve the dual requirements of high-precision forming of the connecting hole 111 and smooth core pulling.

[0039] Please continue reading. Figure 9The second molding part 440 is connected to one side of the first molding part 400 and communicates with the first molding part 400. The second molding part 440 includes a first semi-circular groove 441 recessed from the bottom of the upper mold 200 in a direction away from the lower mold 300, and a second semi-circular groove 442 recessed from the top of the lower mold 300 in a direction away from the upper mold 200. When the mold is closed, the first semi-circular groove 441 and the second semi-circular groove 442 can close together to form the second molding part 440, thereby forming a cylindrical support part 120. The first semi-circular groove 441 of the upper mold 200 and the second semi-circular groove 442 of the lower mold 300 are symmetrically designed, and can be tightly assembled into a complete circular cavity after the mold is closed. This structure can directly form the cylindrical support part 120 in one step without subsequent splicing or trimming, ensuring the roundness of the support part 120. The semi-circular groove that separates the upper and lower molds 300 can detach to both sides when the mold is opened, allowing the wax model to be easily removed, greatly reducing the risk of breakage or deformation of the support part 120 during the demolding process.

[0040] Please see Figure 10 and Figure 11 The third molding part 450 is connected to one side of the second molding part 440 and communicates with the second molding part 440. The third molding part 450 has a third semi-circular groove 451 recessed from the bottom of the upper mold 200 away from the lower mold 300, and a fourth semi-circular groove 452 recessed from the top of the lower mold 300 away from the upper mold 200. When the mold is closed, the third semi-circular groove 451 and the fourth semi-circular groove 452 can be closed to form the third molding part 450. The inner diameter of the third molding part 450 is larger than the inner diameter of the second molding part 440, thereby forming a circular connecting plate 130 through the third molding part 450. The third semi-circular groove 451 (upper mold 200) and the fourth semi-circular groove 452 (lower mold 300) are symmetrically spliced ​​to form a complete circular cavity, which can directly form the circular structure of the connecting plate 130 in one step, avoiding the roundness deviation (such as ellipticity or irregular edges) caused by splicing or trimming in traditional processes. The connecting plate 130 serves as the reference surface for the subsequent connecting body 140. Its flatness and roundness directly affect the coaxiality and assembly accuracy of the connecting body 140 (frustum 141, lugs, etc.). This design ensures that the axes of the connecting plate 130, the support part 120, and the connecting body 140 are strictly aligned, guaranteeing the precise cooperation of the two symmetrical connecting parts.

[0041] Please see Figure 12After the upper mold 200 and the lower mold 300 are closed, they can form a first sliding cavity for mounting the first slider 500 and a second sliding cavity 460 for mounting the second slider 600. When the first slider 500 is installed in the first sliding cavity and the second slider 600 is installed in the second sliding cavity 460, they can be assembled to form a molding cavity with one end connected to the third molding part 450, and the other end of the molding cavity is open to the outside. The portion of the molding cavity adjacent to the third molding part 450 is defined as a molding section, while the remaining portion is defined as a second core-pulling hole 470 for the first core-pulling 700 to be inserted. The connecting body 140 includes irregularly shaped structures distributed along the circumference, such as arc-shaped lugs 142, connecting lugs 143, and locking side wings 144. These features cannot be directly formed by simply closing the upper and lower molds 300. The molding section formed by the first slider 500 and the second slider 600 (the part of the molding cavity adjacent to the third molding part 450) can be precisely designed according to the shape and position of the support ears. After the mold is closed, all irregular features can be directly molded, avoiding the dimensional deviation caused by subsequent manual splicing or trimming, and ensuring that the support ears of the two symmetrical connecting parts and the limiting notch 145 can be precisely matched.

[0042] Please continue reading. Figure 11 ,as well as Figure 13 and Figure 14 The fourth forming part includes at least three forming protrusions 480 that protrude from the inner wall of the forming section toward the center of the forming section and are spaced apart around the center of the forming section; a plurality of forming recesses 481 corresponding to the end faces of the forming protrusions 480; a plurality of first forming grooves 490 corresponding to each two adjacent forming protrusions 480 and recessed toward the center of the forming section; and a plurality of second forming grooves 730 located on the outer wall of the first core puller 700 and corresponding to the positions of the first forming grooves 490. One end of the forming protrusion 480 is connected to the third forming part 450. The plurality of arc-shaped forming protrusions 480 can be used to form a frustum 141 with an outer diameter smaller than that of the connecting disc 130 and fixed to one side of the connection. Arc-shaped molding recesses 481 are distributed at the end of the molding protrusion 480 away from the third molding part 450, and one side of the molding recesses 481 communicates with the first molding groove 490. The molding recesses 481 are used to form an arc-shaped lug 142, one end of which is fixed to the frustum 141 and the other end extends horizontally away from the center of the frustum 141. The open end of the first molding groove 490 communicates with the third molding part 450, while the other opposite end extends towards the direction close to the second core-pulling hole 470. The first molding groove 490 is used to form a connecting lug 143, one end of which is connected to the connecting plate 130. Please continue reading. Figure 14 One of the first forming grooves 490 has a side forming groove 510 recessed in the direction away from the center of the forming section. The side forming groove 510 is used to form locking side wings 144 distributed on the outer wall of the connecting lug 143. The second forming groove 730 is used to form a limiting notch 145 provided on the inner wall of the connecting lug 143.

[0043] The design of the fourth molding section above is specifically designed for the most complex structure in the connector wax model 100, the "connecting body 140" (including core mating features such as frustum 141, arc-shaped lugs 142, connecting lugs 143, locking side wings 144, and limiting notches 145). Through a multi-dimensional cavity combination of "protrusions—recesses—grooves," all irregular features are precisely molded in one step. All features of the connecting body 140 (the stepped transition of the frustum 141, the curvature of the lugs, the protrusions of the side wings, and the recesses of the notches) are directly formed through the mold cavity, without the need for manual plastic repair or adjustment. This completely solves the problem of feature loss (such as lug deformation and insufficient notch size) caused by the lack of dedicated cavities in traditional molds, ensuring that the wax model is completely consistent with the design. The dimensions of the mold cavity are solidified through precision machining (such as the radius of the forming recess 481 and the depth of the side wing groove). In each batch of wax molds produced, the curvature of the arc support 142, the width of the limiting notch 145, and the thickness of the locking side wing 144 are completely consistent, ensuring that any two symmetrical connecting parts can be interchanged and matched to meet the needs of general assembly in mass production.

[0044] Please see Figure 15 The first core puller 700 has a recessed area 710 on its insertion end face. Several abutting protrusions 711 are fixed in the recessed area 710 at intervals. When the first core puller 700 is inserted into the hole 470 of the second core puller 800, the abutting protrusions 711 can abut against the end face of the molding protrusion 480 one by one. The shape of the abutting protrusions 711 is adapted to the part of the end face of the molding protrusion 480 that does not have a molding recess 481. When the wax fills the molding recess 481, the molding recess 481 will form an arc-shaped support ear 142 that is "fixed to the frustum 141 at one end and extends horizontally away from the center of the frustum 141 at the other end". A core-pulling groove 720 is provided in the center of the recessed area 710 for the insertion of the second core-pulling device 800. One end of the second core-pulling device 800 can pass through the casting cavity 900, the first forming part 400, the second forming part 440, the third forming part 450, and the fourth forming part to abut against the core-pulling groove 720 to form the through cavity 150. The core-pulling groove 720 provides a clear endpoint positioning for the second core-pulling device 800, preventing it from being inserted too deeply or too shallowly. This method of supporting both ends (one end on the side of the casting cavity 900, and the other end in the core-pulling groove 720) can effectively prevent the second core-pulling device 800 from bending due to force (wax impact) during the wax injection process, ensuring that the axis of the through cavity 150 is straight and the diameter is uniform, meeting the requirements for smooth airflow.

[0045] Please continue reading. Figure 15The second forming groove 730 includes a first notch 731 located on one side of the abutting protrusion 711 and extending outward, and a first recessed region 732 and a second recessed region 733 recessed from the outer wall of the first core puller 700 toward the interior of the first core puller 700. One end of the first recessed region 732 communicates with the first notch 731, and the other opposite end communicates with the second recessed region 733. The depth of the first recessed region 732 is less than the depth of the second recessed region 733. A limiting notch 145 can be formed through the second forming groove 730. The notch features correspond to different regions, achieving one-time forming. The limiting notch 145 can be formed by the shallow recess of the first recessed region 732 and the deep recess of the second recessed region 733.

[0046] Please see Figure 16 This wax injection mold features: 1. Precise assembly of the upper mold 200, lower mold 300, slider, and core puller creates dedicated cavities for all structures of the connecting parts (connecting plate 110 with rounded corners, cylindrical support 120, circular connecting disc 130, connecting body 140 including frustum 141 / connecting lug 143 / locking side wing 144, through cavity 150, connecting hole 111). This eliminates the need for subsequent manual molding, polishing, or secondary processing, allowing for direct one-time molding of a complete wax model, solving problems such as feature deformation and material shortages caused by missing cavities in traditional molds. 2. Eliminating the manual finishing and multiple processing steps of traditional processes, wax model molding can be completed in a single mold closing, shortening the production time per piece. Simultaneously, the buffer material replenishment design of the casting cavity 900 avoids rework due to insufficient wax material, further improving production continuity. III. All cavity dimensions are precisely solidified through mold processing. Key parameters such as the fillet radius, lug thickness, and side wing position of each batch of wax molds are completely uniform, avoiding individual differences caused by manual operation, significantly reducing the scrap rate of subsequent castings, and meeting the needs of industrialized mass production. IV. For the core mating structure of the connecting body 140 (arc lug 142, limiting notch 145, locking side wing 144), the combination of "forming protrusion 480 - concave position - groove" in the fourth forming part and the stepped design of the deep and shallow recesses in the second forming groove 730 ensure that the lug curvature, notch depth, and side wing angle match the design requirements, providing a precise structural foundation for the rotational docking and bolt locking of the two connecting parts.

[0047] 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 wax model molding die for a connector, used to process and mold a wax model with a structure consistent with the connector. The connector wax model includes a connecting plate, a plurality of connecting holes distributed on the connecting plate, a support portion connected to the connecting plate at one end, a connecting disc connected to the other end of the support portion, and a connecting body coaxially fixed to the side of the connecting disc away from the support portion. The connecting body includes a frustum, a plurality of arcuate lugs, a plurality of connecting lugs, a limiting notch, and locking side wings. The connecting body has a through cavity extending along the central axis of the connecting body and extending outward at both ends. The connecting bodies of two symmetrically structured connectors can cooperate and connect with each other. The device includes an upper mold with an upper cavity, a lower mold connected below the upper mold and having a lower cavity, a first slider and a second slider detachably connected to the upper cavity and the lower cavity, a first core puller, a second core puller with one end abutting against the first core puller for forming the through cavity, and a pair of third core pullers for forming the connecting hole. The upper cavity, lower cavity, first slider, and second slider can be assembled to form a molding cavity. The molding cavity includes a first molding part for forming the connecting plate, a second molding part for forming the support part, a third molding part for forming the connecting disc, and a fourth molding part that cooperates with the first core puller for forming the connecting body.

2. The connector wax mold forming die according to claim 1, characterized in that: The first forming part includes a first forming half-groove recessed from the bottom of the upper mold toward the direction away from the lower mold, and a second forming half-groove recessed from the top of the lower mold toward the direction away from the upper mold. The connection between the groove wall and the bottom of the first forming half-groove and the second forming half-groove is a smooth curved surface transition. When the mold is closed, the first forming half-groove and the second forming half-groove can be closed to form the first forming part, thereby forming a square connecting plate with rounded corners through the first forming part.

3. The connector wax mold forming die according to claim 2, characterized in that: The inner sidewalls of the first and second molded half-grooves are provided with at least two spaced first slots. Each first slot is provided with a corresponding first insertion cavity that is coaxial with the first slot. The first insertion cavity is a hollow cavity with one end communicating with the first or second molded half-grooves and the other end communicating with the outside. The first insertion cavity and the coaxially distributed first slots can cooperate to form a first core-pulling hole for the third core to be inserted. The third core is used to form the connecting hole by cooperating with the first core-pulling hole.

4. The connector wax mold forming die according to claim 1, characterized in that: The second forming part is connected to one side of the first forming part and communicates with the first forming part. The second forming part includes a first semi-circular groove recessed from the bottom surface of the upper mold away from the lower mold, and a second semi-circular groove recessed from the top surface of the lower mold away from the upper mold. When the mold is closed, the first semi-circular groove and the second semi-circular groove can be closed to form the second forming part, thereby forming a cylindrical support part through the second forming part.

5. The connector wax mold forming mold according to claim 1, characterized in that: The third forming part is connected to one side of the second forming part and communicates with the second forming part. The third forming part has a third semi-circular groove formed by recessing from the bottom surface of the upper mold away from the lower mold, and a fourth semi-circular groove formed by recessing from the top surface of the lower mold away from the upper mold. When the mold is closed, the third semi-circular groove and the fourth semi-circular groove can be closed to form the third forming part, thereby forming a circular connecting plate through the third forming part.

6. The connector wax mold forming die according to claim 1, characterized in that: After the upper mold and the lower mold are closed, they can form a first sliding cavity for installing the first slider and a second sliding cavity for installing the second slider. When the first slider is installed in the first sliding cavity and the second slider is installed in the second sliding cavity, they can be assembled to form a molding cavity with one end connected to the third molding part. The other end of the molding cavity is open to the outside. The portion of the molding cavity adjacent to the third molding part is defined as a molding section, while the remaining portion is defined as a second core-pulling hole for the first core-pulling insertion.

7. The connector wax mold forming die according to claim 6, characterized in that: The fourth molding part includes at least three molding protrusions that protrude from the inner wall of the molding section toward the center of the molding section and are spaced apart around the center of the molding section, a plurality of molding recesses that are correspondingly provided on the end face of the molding protrusions, a plurality of first molding grooves that are correspondingly distributed between every two adjacent molding protrusions and recessed away from the center of the molding section, and a plurality of second molding grooves that are provided on the outer wall of the first core pull and whose positions correspond one-to-one with the first molding grooves. One end of the forming protrusion is connected to the third forming part, and a plurality of arc-shaped forming protrusions can be used to form a frustum with an outer diameter smaller than the connecting disc and fixed to one side of the connection. The arc-shaped molding recess is distributed at one end of the molding protrusion away from the third molding part, and one side of the molding recess is connected to the first molding groove. The molding recess is used to form an arc-shaped support ear with one end fixed to the frustum and the other end extending horizontally away from the center of the frustum. The opening end of the first molding groove communicates with the third molding part, while the other opposite end extends toward the direction close to the second core-pulling hole. The first molding groove is used to form a connecting lug that is connected to the connecting plate at one end. One of the first molding grooves has a side wing molding groove recessed toward the direction away from the center of the molding section. The side wing molding groove is used to form the locking side wings distributed on the outer wall of the connecting lug. The second forming groove is used to form a limiting notch provided on the inner wall of the connecting lug.

8. The connector wax mold forming die according to claim 7, characterized in that: The end face of the first core-pulling insertion end is provided with a recessed area, and a plurality of spaced abutting protrusions are fixed in the recessed area. When the first core-pulling end is inserted into the second core-pulling hole, the plurality of abutting protrusions can abut against the molded protrusion end face one by one. The shape of the abutting protrusion is adapted to the part of the molded protrusion end face that does not have the molded recess. The recessed area has a core-pulling groove in the middle for inserting the second core, and the second core abuts against the core-pulling groove to form the through cavity.

9. The connector wax mold forming die according to claim 8, characterized in that: The second forming groove includes a first notch located on one side of the abutting protrusion and extending outward, and a first recessed area and a second recessed area recessed from the outer wall of the first core puller toward the interior of the first core puller. One end of the first recessed area is connected to the first notch, and the other opposite end is connected to the second recessed area. The recessed depth of the first recessed area is less than the recessed depth of the second recessed area. The limiting notch can be processed by the second forming groove.

10. The connector wax mold forming mold according to any one of claims 1-9, characterized in that: It also includes a casting cavity located at the end of the molding cavity away from the first core pulling end, the casting cavity being connected to the outside through a casting channel provided on the lower mold.

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