Automatic positioning core assembly die

By using an automatic matching mold core combination design, the problems of high cost and inconvenient maintenance of traditional molds are solved, and high-precision, low-cost, multi-variety, small-batch production of molds is achieved, which is suitable for the characteristics of aviation rubber and plastic seals.

CN122185452APending Publication Date: 2026-06-12NANJING HANGJIAN AVIATION EQUIP TECH SVC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING HANGJIAN AVIATION EQUIP TECH SVC CO LTD
Filing Date
2025-12-27
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

Traditional manufacturing methods for aerospace rubber and plastic sealing component combination molds are costly, mold precision depends on the matching of positioning guide pillars, making it difficult to adapt to multi-variety, small-batch production, and mold maintenance is inconvenient.

Method used

The design adopts an automatic positioning mold core combination mold design. The upper and lower mold cores are connected by conical surface mating and elastic components, eliminating the guide post and guide sleeve structure. The mold base is separated from the mold core, and the mold core has a certain degree of freedom. Precise positioning is achieved by using C-shaped snap rings and elastic components.

Benefits of technology

It reduces mold development costs, improves production efficiency and product quality, is suitable for multi-variety small-batch production, and the mold is easy to disassemble and assemble, avoiding product misalignment and improving the appearance quality of the seals.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses an automatic coordination mold core combined mold, which comprises a pair of opposed upper mold plates (1) and lower mold plates (2), the upper mold plates and the lower mold plates are each provided with more than one through hole (3), the through holes (3) of the upper mold plates and the lower mold plates are aligned in pairs, upper mold cores (4) and lower mold cores (5) are correspondingly arranged in the through holes (3) of the upper mold plates and the lower mold plates, the upper mold cores (4) are connected with the inner walls of the through holes (3) of the upper mold plates (1) through circumferentially distributed elastic components (6), the lower mold cores (5) are also connected with the inner walls of the through holes (3) of the lower mold plates (2) through circumferentially distributed elastic components (6), and the upper mold cores and the lower mold cores in the through holes (3) aligned in pairs are closed to form a cavity. The application can effectively reduce the mold development cost and is very suitable for the characteristics of multiple specifications and small quantity of aviation rubber and plastic sealing elements.
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Description

Technical Field

[0001] This invention belongs to the field of aviation sealing component manufacturing technology, specifically relating to an automatic matching mold core assembly mold. Background Technology

[0002] The traditional manufacturing method for aerospace rubber and plastic seal assembly molds involves machining the upper and lower mold plates separately, then fitting them together using hinges and positioning guides. The precision of aerospace seals produced by this type of mold compression molding relies primarily on the positioning guides. Because aerospace rubber and plastic seals involve numerous specifications and small quantities, tens of thousands of molds need to be manufactured for a single aircraft, making mold manufacturing extremely expensive. Summary of the Invention

[0003] This invention provides an automatically aligned mold core assembly mold. This invention can effectively reduce mold development costs and is highly suitable for the aviation rubber and plastic sealing parts industry, which features a wide variety of specifications but small quantities.

[0004] Technical Solution. An automatic positioning mold core assembly mold includes a pair of opposing upper and lower templates. Each upper and lower template has one or more through holes, and the through holes of the upper and lower templates are aligned in pairs. An upper mold core and a lower mold core are correspondingly provided in the through holes of the upper and lower templates. The upper mold core is connected to the inner wall of the through hole of the upper template via elastic components distributed along the circumference, and the lower mold core is also connected to the inner wall of the through hole of the lower template via elastic components distributed along the circumference. The upper and lower mold cores in the aligned through holes form a cavity after being engaged.

[0005] In the aforementioned automatic positioning mold core assembly mold, the upper and lower mold cores are fitted in a conical surface fit.

[0006] In the aforementioned automatic positioning mold core assembly, the connection structure between the elastic component and the upper / lower mold core includes an annular groove disposed on the outer circumferential surface of the upper / lower mold core, a C-shaped retaining spring being engaged in the annular groove, and connecting holes distributed on the outer circumference of the C-shaped retaining spring; the connecting holes are connected to one end of the elastic component.

[0007] In the aforementioned automatic positioning mold core assembly, the connection structure between the elastic component and the upper / lower template includes a mounting hole disposed on the inner wall of the through hole of the upper / lower template, and the mounting hole is connected to the other end of the elastic component.

[0008] In the aforementioned automatic positioning mold core assembly, the elastic component includes a cylindrical base, one end of which is provided with a guide post. A housing is slidably connected to the guide post, and a spring cavity is provided between the housing and the guide post. A spring is provided inside the spring cavity, one end of which abuts against the housing and the other end abuts against the guide post via a pressure plate. The pressure plate is connected to one end of a connecting rod, and the other end of the connecting rod passes through the spring and the housing in sequence before being provided with a connecting hook. The connecting hook is hooked onto a connecting hole, and the mounting hole is fixedly connected to the other end of the cylindrical base.

[0009] In the aforementioned automatic positioning mold core assembly mold, a limiting post is provided on the inner wall of the outer shell, and a limiting groove is provided on the outer wall of the guide post. The limiting post and the limiting groove are slidably connected.

[0010] In the aforementioned automatic alignment mold core assembly mold, the connecting holes are symmetrically distributed.

[0011] In the aforementioned automatic alignment mold core assembly mold, there are 4 connecting holes.

[0012] Beneficial effects: The mold core of this invention has a certain degree of freedom in six directions: front-back, left-right, up-down, and right-back. It has high positioning accuracy, flexible mold core replacement, low mold development cost, and high production efficiency. One mold can produce products of different specifications, making it more suitable for multi-variety, small-batch production in the field of aerospace sealing components. At the same time, it can effectively avoid product misalignment caused by improper positioning of guide pillars and guide sleeves, and effectively improve the appearance quality of sealing components.

[0013] Traditional methods for manufacturing aircraft sealing molds typically involve integral molding of the cavity and mold base, or mechanical embedding of the mold core into the mold base. Mold closing and positioning rely on guide pillars and guide sleeves. This mold structure makes mold core disassembly difficult, mold maintenance inconvenient, and each mold can only produce one type of product. Mold closing and positioning accuracy is poor, resulting in generally lower product quality, making it suitable for mass production of single products. The mold manufacturing method provided by this invention employs a separate mold base and mold core design, eliminating the guide pillar and guide sleeve structure. The upper and lower mold cores are fitted by tapered inclined surfaces, and the mold base and mold core are connected by elastic components and C-shaped retaining rings. Molds manufactured using this structure have a highly versatile mold base, and the mold core has a certain degree of freedom in front-back, left-right, and up-down movements. They offer high positioning accuracy, simple and convenient mold core disassembly and maintenance, low mold development and usage costs, high product quality, and the ability to produce several different products from a single mold. This high production efficiency makes it more suitable for the diverse specifications and small-batch production characteristics of aircraft sealing products.

[0014] In summary, this invention can greatly reduce the number of molds to be manufactured, requiring only the processing of the mold core, which is then installed onto the mold base. The combined molds manufactured using this method are characterized by flexible installation, convenient disassembly and assembly, automatic alignment, and high precision. This can effectively reduce mold development costs and is very suitable for the aviation rubber and plastic sealing parts industry, which has a wide variety of specifications and small quantities. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a front sectional view of the present invention; Figure 3 This is a top view of the present invention; Figure 4 This is a schematic diagram of an elastic component; Figure 5 This is a cross-sectional view of the elastic component; Figure 6 This is a schematic diagram of a C-type retaining ring. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] The features and illustrative embodiments of various aspects of the present invention will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. The invention is by no means limited to any specific setups and methods set forth below, but covers any improvements, substitutions, and modifications to structures, methods, and devices without departing from the spirit of the invention. Well-known structures and techniques are not shown in the drawings and the following description to avoid unnecessarily obscuring the invention.

[0019] In the description of this invention, it should be noted that the directions or positional relationships indicated by terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing and simplifying the invention, and should not be construed as limiting the invention. Furthermore, the use of ordinal numbers (e.g., "first and second," etc.) is for distinguishing objects and is not limited to this order, and should not be construed as indicating or implying relative importance.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly, encompassing both direct connection and indirect connection via an intermediate medium. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0021] It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other, and the various embodiments can be referenced and cited in each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0023] Example 1. An automatic alignment mold core assembly mold, see [link to example]. Figures 1-6 It includes a pair of opposing upper templates 1 and lower templates 2. Each upper and lower template has one or more through holes 3. The through holes 3 of the upper and lower templates are aligned in pairs. The upper mold core 4 and lower mold core 5 are respectively provided in the through holes 3 of the upper and lower templates. The upper mold core 4 is connected to the inner wall of the through hole 3 of the upper template 1 through an elastic component 6 distributed along the circumference. The lower mold core 5 is also connected to the inner wall of the through hole 3 of the lower template 2 through an elastic component 6 distributed along the circumference. The upper and lower mold cores in the aligned through holes 3 form a cavity after being put together.

[0024] The aforementioned upper and lower mold cores are fitted in a conical surface configuration.

[0025] The aforementioned connection structure between the elastic component 6 and the upper / lower mold core includes an annular groove 7 disposed on the outer circumferential surface of the upper / lower mold core, a C-shaped retaining spring 8 being engaged in the annular groove 7, and connecting holes 9 distributed on the outer circumference of the C-shaped retaining spring 8; the connecting holes 9 are connected to one end of the elastic component 6.

[0026] The aforementioned connection structure between the elastic component 6 and the upper / lower template includes a mounting hole 10 disposed on the inner wall of the through hole 3 of the upper / lower template, and the mounting hole 10 is connected to the other end of the elastic component 6.

[0027] The aforementioned elastic component 6 includes a cylindrical base 61, with a guide post 62 at one end of the cylindrical base 61. A housing 63 is slidably connected to the guide post 62. A spring cavity 64 is provided between the housing 63 and the guide post 62. A spring 65 is provided inside the spring cavity 64. One end of the spring 65 abuts against the housing 63, and the other end abuts against the guide post 62 via a pressure plate 66. The pressure plate 66 is connected to one end of a connecting rod 67. The other end of the connecting rod 67 passes through the spring 65 and the housing 63 in sequence and is provided with a connecting hook 68. The connecting hook 68 hooks onto the connecting hole 9, and the mounting hole 10 is fixedly connected to the other end of the cylindrical base 61.

[0028] The aforementioned outer shell 63 has a limiting post 69 on its inner wall and a limiting groove 610 on its outer wall. The limiting post 69 and the limiting groove 610 are slidably connected.

[0029] The aforementioned connecting holes 9 are symmetrically distributed.

[0030] The aforementioned number of connection holes 9 is 4.

[0031] Specifically, the upper template 1 and the lower template 2 are the base of the combined mold. They are the same size. A certain number of circular through holes 3 are distributed on the base of the combined mold. Four circular blind holes, i.e., mounting holes 10, are evenly distributed on the inner side of the circular through holes along the circumference. Their main function is to fix or connect one end of the elastic component 6. The other end of the elastic component 6 is connected to the C-shaped retaining spring 8 with four connecting holes 9 and small notches. The upper mold core 4 or the lower mold core 5 can be clamped and fixed by the clamping tension or pressure of the C-shaped retaining spring 8.

[0032] Furthermore, such as Figure 2 As shown, the upper mold core 4 and the lower mold core 5 are both tapered surfaces of the mating surfaces for accurate mold closing and positioning; the through hole 3 is a reserved installation position for the upper mold core 4 and the lower mold core 5; the circular blind hole is for installing one end of the elastic component 6; the annular groove 7 is mainly used to cooperate with the C-type retaining spring 8 to fix the upper mold core 1 and the lower mold core 2.

[0033] Furthermore, such as Figure 4 , 5 As shown, the cylindrical base 61 of the elastic component 6 mainly connects the upper or lower template through the circular blind hole. The guide post 62, spring 65, and outer shell 63 form an elastic sliding mechanism, the main function of which is to pull the upper or lower mold core.

[0034] Furthermore, such as Figure 6 As shown, the four connecting holes 9 of the C-type snap ring 8 are connected to the connecting hook 68. The main function of the clamping hole is to clamp the upper and lower mold cores through tension or pressure. The large hole in the center of the snap ring is connected to the annular groove of the upper and lower mold cores to fix the mold cores.

[0035] The above detailed embodiments are a description of the present invention. It should not be considered that the specific embodiments of the present invention are limited to these descriptions. For those skilled in the art, several simple deductions and substitutions can be made without departing from the concept of the present invention, and all of these should be considered to fall within the protection scope of the present invention.

Claims

1. An automatic alignment mold core assembly mold, characterized in that, It includes a pair of opposing upper templates (1) and lower templates (2). Each upper and lower template has one or more through holes (3). The through holes (3) of the upper and lower templates are aligned in pairs. The upper mold core (4) and lower mold core (5) are respectively provided in the through holes (3) of the upper and lower templates. The upper mold core (4) is connected to the inner wall of the through hole (3) of the upper template (1) through an elastic component (6) distributed along the circumferential direction. The lower mold core (5) is also connected to the inner wall of the through hole (3) of the lower template (2) through an elastic component (6) distributed along the circumferential direction. The upper and lower mold cores in the aligned through holes (3) form a cavity after being joined together.

2. The automatic alignment mold core assembly mold according to claim 1, characterized in that, The upper and lower mold cores are fitted with a conical surface.

3. The automatic alignment mold core assembly mold according to claim 1, characterized in that, The connection structure between the elastic component (6) and the upper / lower mold core includes an annular groove (7) set on the outer circumferential surface of the upper / lower mold core, a C-shaped retaining ring (8) is snapped in the annular groove (7), and connecting holes (9) are distributed on the outer circumference of the C-shaped retaining ring (8); the connecting hole (9) is connected to one end of the elastic component (6).

4. The automatic alignment mold core assembly mold according to claim 3, characterized in that, The connection structure between the elastic component (6) and the upper / lower template includes a mounting hole (10) provided on the inner wall of the through hole (3) of the upper / lower template, and the mounting hole (10) is connected to the other end of the elastic component (6).

5. The automatic alignment mold core assembly mold according to claim 4, characterized in that, The elastic component (6) includes a cylindrical base (61), a guide post (62) is provided at one end of the cylindrical base (61), an outer shell (63) is slidably connected to the guide post (62), a spring cavity (64) is provided between the outer shell (63) and the guide post (62), a spring (65) is provided in the spring cavity (64), one end of the spring (65) abuts against the outer shell (63), and the other end abuts against the guide post (62) via a pressure plate (66). The pressure plate (66) is connected to one end of a connecting rod (67), and the other end of the connecting rod (67) passes through the spring (65) and the outer shell (63) in sequence and is provided with a connecting hook (68); the connecting hook (68) is hooked on the connecting hole (9), and the mounting hole (10) is fixedly connected to the other end of the cylindrical base (61).

6. The automatic alignment mold core assembly mold according to claim 5, characterized in that, The inner wall of the outer shell (63) is provided with a limiting post (69), and the outer wall of the guide post (62) is provided with a limiting groove (610). The limiting post (69) and the limiting groove (610) are slidably connected.

7. The automatic alignment mold core assembly mold according to claim 3, characterized in that, The connecting holes (9) are symmetrically distributed.

8. The automatic alignment mold core assembly mold according to claim 3, characterized in that, There are 4 connecting holes (9).