Core body assembly ridge and horn mouth forming tool

Abstract

The utility model relates to a core assembly ridge and horn mouth forming tool which comprises an upper die assembly, a middle die assembly and a lower die assembly, the upper die assembly and the middle die assembly can move oppositely in the die assembly direction, and a first limiting piece and a first guiding piece are arranged between the upper die assembly and the middle die assembly. The middle die assembly and the lower die assembly can move oppositely in the die closing direction, an elastic element and a second limiting piece are arranged between the lower die assembly and the middle die assembly, the upper die assembly comprises a material pressing assembly and at least one flaring module, the middle die assembly comprises at least one ridge raising die coaxial with the flaring module, and the ridge raising die comprises a first limiting piece and a second limiting piece. The ridging die comprises a plurality of groups of expansion petals which are circumferentially arranged around the same circle center and can move in the radial direction, at least one group of convex ridges are arranged on the peripheries of the plurality of groups of expansion petals, the lower die assembly comprises a driving part which is coaxially arranged with the ridging die, and the driving part is arranged in the ridging die and used for pushing the expansion petals to move in the radial direction and can conduct ridging and flaring on a pipe body at the same time; the processing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive exhaust system manufacturing technology, specifically to a core component ridge and horn-shaped forming tooling. Background Technology

[0002] A car exhaust system generally consists of exhaust pipes, mufflers, catalytic converters, and other main components for mounting and fixing the exhaust system. The muffler pipe requires three processes during production: pressing, ridge raising, and expansion. Ridging refers to using a special expansion mold to permanently fix the positioning of baffle-type parts and core pipe-type parts. Two raised ridges are made at the joint between the core pipe and the baffle to tighten and fix the core pipe and the baffle in position, which is suitable for the assembly of the baffle and the core pipe.

[0003] The existing conventional processing procedure involves processing the bulging and ridge separately, which is a relatively complicated process. It requires two different sets of molds, is time-consuming, requires more manpower and resources, and has low work efficiency. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a core component ridge and flare forming fixture, which can simultaneously ridge and flare the core. After the tube is inserted into the ridge mold, during the continuous downward pressing of the upper mold component, the flare module is inserted into the end of the tube and pushes the middle mold component downward. The elastic element is compressed, and the driving component moves upward relative to the ridge mold, pushing the expansion flap to expand outward, thus completing the ridge operation. At the same time, the flare module completes the flare operation of the tube.

[0005] This utility model provides a core component ridge and flared mouth forming fixture to solve the above-mentioned technical problems, including:

[0006] Upper mold assembly, middle mold assembly, and lower mold assembly.

[0007] The upper mold assembly and the middle mold assembly can move towards each other in the mold closing direction, and a first limiting member and a first guiding member are provided between the upper mold assembly and the middle mold assembly.

[0008] The middle mold assembly and the lower mold assembly can move towards each other in the mold closing direction. An elastic element and a second limiting element are provided between the lower mold assembly and the middle mold assembly.

[0009] The upper mold assembly includes a pressing assembly and at least one set of flaring modules.

[0010] The intermediate mold assembly includes at least one set of ridge molds coaxially arranged with the flaring module. The ridge mold includes several sets of circumferentially arranged and radially movable expansion petals around the same center. At least one set of convex ridges is provided on the outer periphery of the several sets of expansion petals.

[0011] The lower mold assembly includes a drive component coaxially arranged with the ridge mold, the drive component being built into the ridge mold for pushing the expansion petals to move radially.

[0012] Furthermore, the upper mold assembly includes an upper template, the pressing assembly includes a pressing plate, the pressing plate is connected to the upper template via a support rod, and the pressing plate is provided with pressing holes coaxial with the flaring module.

[0013] Furthermore, the lower end of the flared module is tapered and has a clearance groove to make way for the drive component.

[0014] Furthermore, the intermediate module assembly includes a first intermediate template and a second intermediate template with fixed relative positions.

[0015] The first template has a first through hole coaxial with the flaring module, and a support mold is coaxially mounted on the first through hole.

[0016] The ridge mold includes a compression mold rod with one end fixed to the second middle mold plate. The other end of the compression mold rod passes through the first through hole and extends to the upper side of the support mold. The compression mold rod and the support mold have a plurality of radial openings at corresponding positions. The expansion petals are provided on the radial openings and are surrounded on the compression mold rod by elastic units surrounding its outer wall.

[0017] Furthermore, the compression molding rod is provided with a reduced diameter section, and the radial opening is provided on the reduced diameter section.

[0018] Furthermore, the bottom of the compression mold rod is provided with a flange that is fixed to the second template. The flange is provided with a support ring that is sleeved on the compression mold rod, and a gasket is provided between the support ring and the flange.

[0019] Furthermore, the lower mold assembly includes a lower template, the driving member includes a rod fixed to the lower template and a cone acting on the expansion flap, and the second template is provided with a clearance hole to allow the driving member to move.

[0020] Furthermore, a plurality of second guide members are provided between the middle mold assembly and the lower mold assembly. The second guide member includes a second guide rod fixed on the lower mold assembly. The second middle mold plate of the middle mold assembly is provided with a second guide hole corresponding to the second guide rod. The upper end of the second guide rod passes through the second guide hole and is fixed to the limiting block.

[0021] Furthermore, two sets of the first guide members are symmetrically arranged along the upper mold assembly. The first guide member includes a first guide rod and a first guide cylinder. The first guide rod is fixed to the upper mold assembly, and the first guide cylinder is fixed to the first middle template of the middle mold assembly. The first middle template is also provided with a first guide hole corresponding to the first guide cylinder.

[0022] Furthermore, the first limiting member includes multiple first limiting posts fixed to the upper mold assembly, and the first middle mold plate of the middle mold assembly is provided with abutments corresponding to the first limiting posts; the second limiting member includes multiple second limiting posts fixed to the lower side of the second middle mold plate of the middle mold assembly.

[0023] The beneficial effects of this utility model are as follows: the upper mold assembly and the middle mold assembly can move relative to each other in the mold closing direction. The first guide member is used to guide the movement of the upper mold assembly and the middle mold assembly, and the first limiting member is used to limit the minimum relative position of the upper mold assembly and the middle mold assembly. When the upper mold assembly moves away from the middle mold assembly, it facilitates the mounting of the tube body onto the ridge mold. When the upper mold assembly moves closer to the middle mold assembly, it drives the pressing assembly of the upper mold assembly to press against the partition plate, limiting the partition plate, and drives the flaring module to move down and insert into the end of the tube body to flare the end of the tube body. The middle mold assembly and the lower mold assembly can move relative to each other in the mold closing direction. The second limiting member is used to limit the minimum relative position of the middle mold assembly and the lower mold assembly to ensure the accuracy of ridge and flaring. Moreover, during the mold closing process, the pressure of the lower mold assembly is transmitted to the middle mold assembly through the elastic element, which facilitates the flaring and ridge operation. The ridge-forming mold and the flaring module are coaxially arranged, facilitating coaxiality between the flaring module and the tube body fitted on the ridge-forming mold. This ensures uniform force distribution at the tube end when the flaring module acts on it, guaranteeing processing quality. The ridge-forming mold supports the tube body, facilitating the flaring operation; it also compresses the elastic element when the middle mold assembly presses down, causing relative movement between the drive component and the ridge-forming mold. The drive component pushes the expansion flaps radially, causing multiple expansion flaps to expand simultaneously. The expanded flaps compress the inner wall of the tube, and the ridges on the expansion flaps cause the tube body to bulge outward, forming a ridge and fixing the tube body to the partition. In summary, this invention allows for simultaneous ridge-forming and flaring of the core. After the tube body is inserted into the ridge-forming mold, the flaring module is inserted into the tube end during the continuous pressing of the upper mold assembly. The upper mold assembly pushes the middle mold assembly downward, compressing the elastic element. The drive component moves upward relative to the ridge-forming mold, pushing the expansion flaps outward to complete the ridge-forming operation. Simultaneously, the flaring module flares the tube body.

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the compression mold rod of this utility model.

[0028] In the attached diagram: 1-Upper mold assembly, 11-Pressure plate assembly, 111-Pressure plate, 1111-Pressure hole, 112-Support rod, 12-Flanging module, 121-Relief groove, 13-Upper template, 2-Middle mold assembly, 21-Ridge mold, 211-Expansion flap, 2111-Protruding ridge, 212-Pressure expansion rod, 2121-Radial opening, 2122-Reduced diameter section, 2123-Flange, 213-Support ring, 214-Waist ring, 22-First middle template, 221-First through hole 222-First guide hole, 23-Second middle template, 231-Relief hole, 232-Second guide hole, 24-Support mold, 3-Lower mold assembly, 31-Driver, 311-Rod, 312-Cone, 32-Lower template, 4-First limiting component, 41-First limiting post, 42-Abutment post, 5-First guide component, 51-First guide rod, 52-First guide cylinder, 6-Elastic element, 7-Second limiting component, 8-Second guide component, 81-Second guide rod, 82-Limiting block. Detailed Implementation

[0029] Referring to the accompanying drawings, the specific embodiments of this utility model will be described in detail.

[0030] Reference Figures 1 to 3 This utility model provides an embodiment of a core component ridge and flared mouth forming tooling.

[0031] A core component ridge and flare forming fixture includes an upper mold component 1, a middle mold component 2, and a lower mold component 3.

[0032] The upper mold assembly 1 and the middle mold assembly 2 can move toward each other in the mold closing direction, and a first limiting member 4 and a first guide member 5 are provided between the upper mold assembly 1 and the middle mold assembly 2. The first guide member 5 is used to guide the movement of the upper mold assembly 1 and the middle mold assembly 2. The first guide member 5 is symmetrically provided with two sets along the upper mold assembly 1 to improve stability.

[0033] Furthermore, the first guide member 5 includes a first guide rod 51 and a first guide cylinder 52. The first guide rod 51 is fixed to the upper mold assembly 1, and the first guide cylinder 52 is fixed to the first middle template 22 of the middle mold assembly 2. The first middle template 22 is also provided with a first guide hole 222 corresponding to the first guide cylinder 52. When the upper mold assembly 1 and the middle mold assembly 2 move relative to each other, the first guide rod 51 slides within the first guide cylinder 52 to guide the movement direction of the upper mold assembly 1.

[0034] The first limiting member 4 is used to limit the minimum relative position of the upper mold assembly 1 and the middle mold assembly 2. Further, the first limiting member 4 includes multiple first limiting posts 41 fixed on the upper mold assembly 1. The first middle template 22 of the middle mold assembly 2 is provided with abutment posts 42 corresponding to the first limiting posts 41. In this embodiment, four first limiting posts 41 are provided, which are respectively located at the four corners of the upper template 13 to ensure that the pressure applied by the upper mold assembly 1 to the middle mold assembly 2 is stable and uniform.

[0035] The middle mold assembly 2 and the lower mold assembly 3 can move towards each other in the mold closing direction. An elastic element 6 and a second limiting member 7 are provided between the lower mold assembly 3 and the middle mold assembly 2. The elastic element 6 can be a nitrogen spring. The second limiting member 7 includes multiple second limiting posts fixed to the lower side of the second middle template 23 of the middle mold assembly 2. Preferably, the second limiting group has four posts, evenly distributed on both sides below the second template of the middle mold assembly 2. The second limiting member 7 is used to limit the minimum relative position of the middle mold assembly 2 and the lower mold assembly 3 to ensure the accuracy of ridge and flaring operations. Furthermore, during mold closing, the elastic element 6 transmits the pressure of the lower mold assembly 3 to the middle mold assembly 2, facilitating flaring and ridge operations.

[0036] The upper mold assembly 1 includes a pressing assembly 11 and at least one set of flaring modules 12. When the upper mold assembly 1 moves toward the middle mold assembly 2, the pressing assembly 11 of the upper mold assembly 1 is pressed against the partition plate to limit the partition plate, and the flaring module 12 is moved down and inserted into the end of the tube to flare the end of the tube.

[0037] The intermediate mold assembly 2 includes at least one set of ridge molds 21 coaxially arranged with the flaring module 12. When the tube is sleeved on the ridge mold 21, the ridge mold 21 can support the tube. At this time, the flaring module 12 is coaxial with the tube sleeved on the ridge mold 21, thereby ensuring that when the flaring module 12 acts on the end of the tube, the end of the tube is subjected to uniform force, thus ensuring the quality of processing.

[0038] The ridge mold 21 includes several sets of expansion petals 211 arranged circumferentially around the same center and movable radially. At least one set of convex ridges 2111 is provided on the outer periphery of the several sets of expansion petals 211. In this embodiment, two sets of convex ridges 2111 are provided on the upper and lower sides of the partition.

[0039] The lower mold assembly 3 includes a drive member 31 coaxially arranged with the ridge mold 21. The drive member 31 is built into the ridge mold 21 and is used to push the expansion petals 211 to move radially. At this time, when the middle mold assembly 2 is pressed down, it compresses the elastic element 6, and the drive member 31 moves relative to the ridge mold 21. The drive member 31 pushes the expansion petals 211 to move radially, so that multiple expansion petals 211 expand simultaneously. The expanded expansion petals 211 squeeze the inner wall of the tube, and the ridges 2111 on the expansion petals 211 cause the tube to bulge from the inside to the outside to form a ridge, thereby fixing the tube to the partition.

[0040] In some embodiments, the upper mold assembly 1 includes an upper template 13, and the pressing assembly 11 includes a pressing plate 111. The pressing plate 111 is connected to the upper template 13 via a support rod 112. The pressing plate 111 has a pressing hole 1111 coaxial with the flaring module 12. The inner diameter of the pressing hole 1111 is larger than the inner diameter of the partition plate, facilitating the expansion flap 211 to ridge the tube body. When the pressing plate 111 is pressed down along with the upper template 13, the upper end of the tube body passes through the pressing hole 1111 and abuts against the flaring mold, pressing the pressing plate 111 against the partition plate. Further, the support rod 112 is fixed to the upper template 13 by bolts, and a guide tube is fixed to the pressing plate 111 via a mounting flange. The lower end of the support rod 112 passes through the guide tube and is fixed to a limiting plate. At this time, the pressure plate 111 can slide relative to the support rod 112, so that after the pressure plate 111 presses against the partition, the upper template 13 can continue to press down, thereby ensuring that the flaring mold can continuously complete the flaring operation on the end of the tube. Furthermore, the lower end of the flaring module 12 is tapered and has a clearance groove 121 to make way for the driving member 31. By making way for the driving member 31 through the clearance groove 121, it is ensured that the driving member 31 can be pushed into place, thereby ensuring the ridge effect.

[0041] In some embodiments, the intermediate mold assembly 2 includes a first intermediate mold 22 and a second intermediate mold 23 fixed in relative positions, wherein the first intermediate mold 22 and the second intermediate mold 23 are fixedly connected by four sets of columns. The first intermediate mold 22 is provided with a first through hole 221 coaxial with the flared module 12, and a support mold 24 is coaxially provided on the first through hole 221. The support mold 24 provides limiting support for the partition, wherein the support mold 24 can be set according to the shape of the partition. In this embodiment, the support mold 24 adopts an annular support block, which limits the radial movement of the partition and limits the axial movement of the partition by pressing down the pressure plate 111, so as to ensure the stability of the partition position.

[0042] The ridge-enlarging mold 21 includes a compression molding rod 212 fixed at one end to the second intermediate template 23. Specifically, the compression molding rod 212 is a cylindrical structure with an internal cavity. The bottom of the compression molding rod 212 is provided with a flange 2123 fixed to the second intermediate template 23. The flange 2123 is fixed to the second intermediate template 23 by bolts. The other end of the compression molding rod 212 passes through the first through hole 221 and extends to the upper side of the support mold 24. Several radial openings 2121 are opened at corresponding positions of the compression molding rod 212 and the support mold 24. The radial openings 2121 can be evenly opened around the circumference of the compression molding rod 212 to ensure that the compression of the expansion petals 211 on the circumference of the tube is uniform. The expansion petals 211 are provided on the radial opening 2121 and several groups of expansion petals 211 are gathered around the pressure mold rod 212 by elastic units surrounding its outer wall. The elastic units can be rubber rings. The elastic units can cause several expansion petals 211 to retract towards the center when the driving member 31 is no longer squeezed, and to separate from the tube body, which is convenient for unloading.

[0043] Furthermore, the compression molding rod 212 is provided with a reduced diameter section 2122, and the radial opening 2121 is provided on the reduced diameter section 2122. In this case, when the driving member 31 is no longer pressing, the expansion petals 211 retract onto the reduced diameter section 2122, preventing the outer wall of the expansion petals 211 from protruding from the compression molding rod 212, facilitating loading and unloading. Furthermore, the flange 2123 is provided with a support ring 213 sleeved on the compression molding rod 212, which supports the bottom end of the pipe. A gasket 214 is also provided between the support ring 213 and the flange 2123, allowing for adjustment of the number of gaskets 214 to accommodate different pipe lengths and flare sizes, providing strong adaptability.

[0044] In some embodiments, the lower mold assembly 3 includes a lower mold plate 32, and the driving member 31 includes a rod 311 fixed to the lower mold plate 32 and a cone 312 acting on the expansion flap 211. The second intermediate mold plate 23 is provided with a clearance hole 231 to allow the driving member 31 to move. In this embodiment, the outer diameter of the cone 312 gradually increases from top to bottom. The rod 311 is used to connect with the lower mold plate 32. When the cone 312 moves upward relative to the pressure expansion mold rod 212, the cone 312 pushes the expansion flap 211 to expand. The bottom of the rod 311 is fixed with a connector by bolts. The connector has a T-shaped cross-section. The second intermediate mold plate 23 is also provided with a base plate. The base plate is connected to the second intermediate mold plate 23 by bolts. The connector is connected to the base plate by bolts. A pressure plate is provided on the upper side of the connector. The pressure plate is fixed to the base plate by bolts.

[0045] In some embodiments, a plurality of second guide members 8 are provided between the middle mold assembly 2 and the lower mold assembly 3. Specifically, four sets of second guide members 8 are provided between the second middle mold plate 23 and the bottom mold plate, respectively located at the four corners of the bottom mold plate. The second guide members 8 can be fixed to the middle mold assembly 2 and slide relative to the bottom mold assembly; or they can be fixed to the bottom mold assembly and slide relative to the middle mold assembly 2. In this embodiment, the second guide member 8 includes a second guide rod 81 fixed to the lower mold assembly 3. The second middle mold plate 23 of the middle mold assembly 2 is provided with a second guide hole 232 corresponding to the second guide rod 81. The upper end of the second guide rod 81 passes through the second guide hole 232 and is fixed to the limiting block 82. When the middle mold assembly 2 is pressed down, the second guide rod 81 slides within the second guide hole 232 to provide guidance. When the middle mold assembly 2 moves upward under the reset action of the elastic element 6, the limiting block 82 limits the middle mold assembly 2, restricting the maximum relative position between the lower mold assembly 3 and the middle mold assembly 2.

[0046] In use, the equipment lifts the upper mold assembly 1, then places the tube body through the first through hole 221 onto the ridge mold 21, and places the partition plate on the support mold 24. Then, the upper mold assembly 1 is driven down, thereby pressing the pressure plate 111 onto the partition plate to position the partition plate. The flaring module 12 is pressed against the end of the tube body. After the first limiting member 4 is pressed down to abut against the middle mold assembly 2, the middle mold assembly 2 is driven down to continue pressing down. At this time, the tube body is pressed against the ridge mold 21, the relative position between the expansion flap 211 and the tube body is stable, and the relative position between the tube body and the partition plate is fixed, so that the ridge 2111 on the expansion flap 211 is always located on both sides of the partition plate. When the middle mold assembly 2 is continuously pressed down, the elastic element 6 is compressed, and there is relative movement between the driving component 31 and the ridge mold 21. The cone 312 of the driving component 31 moves upward relative to the expansion petal 211, and the cone 312 drives the expansion petal 211 of the ridge mold 21 to expand synchronously. The expansion petal 211 squeezes the inner wall of the tube, and the ridge 2111 on the expansion petal 211 causes the tube to bulge from the inside to the outside, forming a ridge 2111, and forming protrusions on both sides of the partition. At the same time, the flaring mold squeezes the tube end to flare. When the first limiting component 4 and the second limiting component 7 are both moved into place, the ridge operation of the ridge mold 21 on the tube and the flaring operation of the flaring mold on the tube end are completed simultaneously.

[0047] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0048] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tooling for forming the ridge and flared end of a core component, characterized in that, include: Upper mold assembly (1), middle mold assembly (2) and lower mold assembly (3). The upper mold assembly (1) and the middle mold assembly (2) can move toward each other in the mold closing direction, and a first limiting member (4) and a first guide member (5) are provided between the upper mold assembly (1) and the middle mold assembly (2). The middle mold assembly (2) and the lower mold assembly (3) can move toward each other in the mold closing direction. An elastic element (6) and a second limiting element (7) are provided between the lower mold assembly (3) and the middle mold assembly (2). The upper mold assembly (1) includes a pressing assembly (11) and at least one set of flaring modules (12). The middle mold assembly (2) includes at least one set of ridge molds (21) coaxially arranged with the flared module (12). The ridge mold (21) includes several sets of circumferentially arranged and radially movable expansion petals (211) around the same center. At least one set of convex ridges (2111) is provided on the outer periphery of the several sets of expansion petals (211). The lower mold assembly (3) includes a drive member (31) coaxially arranged with the ridge mold (21), the drive member (31) being built into the ridge mold (21) for pushing the expansion petals (211) to move radially.

2. The core component ridge and flared mouth forming fixture according to claim 1, characterized in that, The upper mold assembly (1) includes an upper template (13), and the pressing assembly (11) includes a pressing plate (111). The pressing plate (111) is connected to the upper template (13) through a support rod (112). The pressing plate (111) is provided with a pressing hole (1111) coaxial with the flaring module (12).

3. The core component ridge and flared mouth forming fixture according to claim 1, characterized in that, The lower end of the flared module (12) is tapered and has a clearance groove (121) to make way for the drive member (31).

4. The core component ridge and flared mouth forming fixture according to claim 1, characterized in that, The intermediate module component (2) includes a first intermediate template (22) and a second intermediate template (23) with fixed relative positions. The first template (22) is provided with a first through hole (221) coaxial with the flared module (12), and a support mold (24) is provided coaxially on the first through hole (221). The ridge mold (21) includes a compression mold rod (212) with one end fixed to the second middle template (23). The other end of the compression mold rod (212) passes through the first through hole (221) and extends to the upper side of the support mold (24). The compression mold rod (212) and the support mold (24) have a plurality of radial openings (2121) at corresponding positions. The expansion petals (211) are provided on the radial openings (2121) and a plurality of expansion petals (211) are gathered on the compression mold rod (212) by elastic units surrounding its outer wall.

5. The core assembly ridge and flared mouth forming fixture according to claim 4, characterized in that, The compression molding rod (212) is provided with a reduced diameter section (2122), and the radial opening (2121) is provided on the reduced diameter section (2122).

6. The core component ridge and flared mouth forming fixture according to claim 4, characterized in that, The bottom of the compression mold rod (212) is provided with a flange (2123) fixed to the second template (23). The flange (2123) is provided with a support ring (213) sleeved on the compression mold rod (212). A gasket (214) is also provided between the support ring (213) and the flange (2123).

7. The core component ridge and flared mouth forming fixture according to claim 4, characterized in that, The lower mold assembly (3) includes a lower mold plate (32), the driving member (31) includes a rod (311) fixed to the lower mold plate (32) and a cone (312) acting on the expansion valve (211), and the second middle mold plate (23) is provided with a clearance hole (231) to make way for the driving member (31).

8. The core component ridge and flared mouth forming fixture according to claim 1, characterized in that, Several sets of second guide members (8) are provided between the middle mold assembly (2) and the lower mold assembly (3). The second guide member (8) includes a second guide rod (81) fixed on the lower mold assembly (3). The second middle mold plate (23) of the middle mold assembly (2) is provided with a second guide hole (232) corresponding to the second guide rod (81). The upper end of the second guide rod (81) passes through the second guide hole (232) and is fixed to the limiting block (82).

9. The core assembly ridge and flared mouth forming fixture according to claim 1, characterized in that, The first guide member (5) is symmetrically arranged in two sets along the upper mold assembly (1). The first guide member (5) includes a first guide rod (51) and a first guide cylinder (52). The first guide rod (51) is fixed to the upper mold assembly (1), and the first guide cylinder (52) is fixed to the first middle template (22) of the middle mold assembly (2). The first middle template (22) is also provided with a first guide hole (222) corresponding to the first guide cylinder (52).

10. The core assembly ridge and flared mouth forming fixture according to claim 1, characterized in that, The first limiting member (4) includes multiple first limiting posts (41) fixed on the upper mold assembly (1), and the first middle template (22) of the middle mold assembly (2) is provided with abutments (42) corresponding to the first limiting posts (41); the second limiting member (7) includes multiple second limiting posts fixed on the lower side of the second middle template (23) of the middle mold assembly (2).

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