Complex molded surface closed angle mold
By designing complex surface angle-closing molds, combined with the strong and uniform thrust of the hydraulic jack, the problem of difficult demolding of special-shaped parts in closed angle structures is solved, and an efficient and lossless mold release process is achieved, and production efficiency and part quality are improved.
Patent Information
- Application Number
- CN202421722772.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-20
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-07-20
AI Technical Summary
In the manufacturing of composite materials, special-shaped parts with closed angle structures are difficult to be demolded after curing. The traditional method is time-consuming and labor-intensive and easy to damage parts, especially the concentration of stress at the R angle is prone to internal damage.
A complex surface angle closing mold is designed, using a combination of side plates and cover plates, and a hydraulic jack assists in mold release. Through the through hole design of the side plates and end core molds, combined with the width change characteristics of the parts, the powerful and uniform thrust of the hydraulic jack can be used to achieve smooth launch of the parts.
Improve mold release efficiency, reduce labor costs, protect parts integrity, reduce operating costs, and ensure parts quality and production efficiency.
Smart Images
Figure CN223131426U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of demoulding of aviation composite materials, and particularly relates to a closed-angle mould with a complex surface Background Art
[0002] In the manufacture of composite materials, after the parts are cured, common demoulding tools are used to separate the parts from the tooling and then lift the parts out. For special-shaped parts such as C-shaped and I-shaped parts, according to the forming law of composite materials, the parts will produce springback. If the parts are of a closed-angle structure, it is extremely difficult to remove the forming mould.
[0003] For I-shaped parts with a closed-angle structure, due to springback, it is difficult to demould. During the demoulding process, if traditional methods are used, the following problems exist:
[0004] 1. The demoulding tool cannot reach the middle position of the part, and no force can be applied, which is time-consuming and laborious
[0005] 2. The springback causes a tight fit, and a greater force is required to remove it. The surface of the part is easily damaged during the process of applying force
[0006] 3. Stress concentration occurs at the R corner during the demoulding process, and internal damage is easily caused during the removal process, resulting in delamination.
[0007] Therefore, to solve the above problems, we propose a closed-angle mould with a complex surface. Content of the Utility Model
[0008] (1) Technical Problems to be Solved
[0009] In view of the deficiencies of the prior art, the utility model provides a closed-angle mould with a complex surface, which solves the technical problem that in the manufacture of composite materials, after the parts are cured, common demoulding tools are used to separate the parts from the tooling and then lift the parts out. For special-shaped parts such as C-shaped and I-shaped parts, according to the forming law of composite materials, the parts will produce springback. If the parts are of a closed-angle structure, it is extremely difficult to remove the forming mould.
[0010] (2) Technical Solutions
[0011] To achieve the above purposes, the utility model is realized through the following technical solutions:
[0012] A closed-angle mould with a complex surface includes a mould body and a part body. The mould body includes side plates, a cover plate and an end core mould. The side plates include two overlying side plates, two side support plates and two upper support plates. The end core mould has the same cross-section as the mould body. Through holes are provided on the end core mould. The side plates and the end core mould are made of the same material. The part body is placed inside the mould body.
[0013] Preferably: the two side support plates are symmetrically installed on both sides of the cover plate and the end core mould, and the two upper support plates are symmetrically arranged above the side support plates.
[0014] Preferably, two upper support plates are symmetrically installed on both sides of the cover plate and the end core mold, two covering and pressing side plates are respectively installed on both sides of the two side support plates, and through holes are symmetrically formed on the end core mold.
[0015] (III) Beneficial effects
[0016] First, by designing the complex-shaped surface closed-angle mold as a combination of side plates and a cover plate, during the demolding process, the method of using a hydraulic jack to assist in demolding significantly improves the demolding efficiency of the closed-angle structure special-shaped parts. Traditional demolding methods are often limited by the complexity of the part structure and the springback characteristics, resulting in a time-consuming and laborious demolding process. However, with its powerful thrust and precise force application control, the hydraulic jack can quickly and smoothly push the part out of the mold, greatly shortening the demolding time. This not only reduces the labor cost but also improves the overall operation efficiency of the production line and reduces the operating cost of the enterprise. Therefore, this demolding method has significant beneficial effects on improving production efficiency and reducing costs.
[0017] Second, by designing the complex-shaped surface closed-angle mold as a combination of side plates and a cover plate, during the demolding process, in order to protect the part from damage, traditional demolding methods often cause scratches, indentations or even internal damage to the part surface due to uneven or excessive force application. When using a hydraulic jack to assist in demolding, due to the uniform and controllable thrust, it can avoid local stress concentration and reduce damage to the part. At the same time, the smooth force application method of the hydraulic jack also helps to reduce the deformation and internal stress of the part during demolding, thereby protecting the integrity and performance of the part. Therefore, this demolding method has significant beneficial effects on ensuring part quality and improving the product qualification rate. Description of the drawings
[0018] The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly and implement it in accordance with the content of the specification, the following describes in detail with the preferred embodiments of the present invention in conjunction with the drawings.
[0019] Figure 1 It is a structural diagram of the mold body of the present invention.
[0020] Legend: 1. Mold body; 11. Side plate; 12. Covering and pressing side plate; 13. Side support plate; 14. Upper support plate; 15. Cover plate; 16. End core mold; 17. Through hole; 18. Part body. Detailed implementation manners
[0021] Embodiments of the present application provide a complex surface closed-angle mold, effectively solving the technical problem that in composite material manufacturing, after the part is cured, a common demolding tool separates the part from the tooling and then lifts the part out. For special-shaped parts such as C-shaped and I-shaped parts, according to the forming law of composite materials, the part will have springback. If the part has a closed-angle structure, it is extremely difficult to demold the forming mold.
[0022] Embodiment
[0023] According to Figure 1 As shown, the technical solution in the embodiments of the present application effectively solves the technical problem that in composite material manufacturing, after the part is cured, a common demolding tool separates the part from the tooling and then lifts the part out. For special-shaped parts such as C-shaped and I-shaped parts, according to the forming law of composite materials, the part will have springback. If the part has a closed-angle structure, it is extremely difficult to demold the forming mold. The general idea is as follows:
[0024] In view of the problems existing in the prior art, the present utility model provides a complex surface closed-angle mold, including a mold main body 1 and a part main body 18. The mold main body 1 includes side plates 11, a cover plate 15 and an end core mold 16. The side plates 11 include two pressing side plates 12, two side support plates 13 and two upper support plates 14. The end core mold 16 has the same cross-section as the mold main body 1, and a through hole 17 is provided on the end core mold 16. Among them, the side plates 11 and the end core mold 16 are made of the same material. The part main body 18 is placed inside the mold main body 1. The two side support plates 13 are symmetrically installed on both sides of the cover plate 15 and the end core mold 16. The two upper support plates 14 are symmetrically arranged above the side support plates 13. The two upper support plates 14 are symmetrically installed on both sides of the cover plate 15 and the end core mold 16. The two pressing side plates 12 are respectively installed on both sides of the two side support plates 13. The through holes 17 are symmetrically opened on the end core mold 16. By using the method of assisting demolding with a hydraulic jack, the demolding efficiency of special-shaped parts with a closed-angle structure is significantly improved. The traditional demolding method is often limited by the complexity of the part structure and the springback characteristics, resulting in a time-consuming and laborious demolding process. The hydraulic jack, with its powerful thrust and precise force application control, can quickly and smoothly push the part out of the mold, greatly shortening the demolding time. This not only reduces the labor cost but also improves the overall operation efficiency of the production line.
[0025] Working principle:
[0026] First step, in composite material manufacturing, aiming at the demolding problem of special-shaped parts with closed-angle structures, the demolding solution we designed cleverly combines the working principle of a hydraulic jack with the width change characteristics of the part structure. First of all, we need to recognize that during the curing process of the closed-angle structure, due to material rebound, it fits tightly with the mold, and traditional demolding tools are often difficult to intervene or have insufficient force application. Therefore, we introduce the external force source of the hydraulic jack. The working principle of the hydraulic jack is based on Pascal's principle, that is, when the liquid in a closed container transmits pressure, its magnitude remains unchanged and can act uniformly on each part of the container. During the demolding process, the hydraulic jack is placed in an appropriate position, and its tail end is firmly fixed to the tooling or support structure to ensure that the force application direction is stable and does not deviate. The piston part of the jack is in close contact with the contact surface of the part body 18 or the mold body 1. As the hydraulic system is pressurized, the piston gradually pushes outwards, generating a strong thrust. The key application of this thrust lies in its combination with the width change characteristics of the part body 18. Since there is a width change from one end to the other of the part body 18, especially near the closed-angle structure where it is often relatively narrow, we can choose the force application point of the jack at the narrower end. As the thrust is gradually applied, the part body 18 or the mold body 1 begins to move in the direction from narrow to wide under the action of the force. This movement method not only conforms to the natural shape change of the part body 18 but also avoids excessive local stress in stress concentration areas such as R corners, thereby reducing the risk of internal damage.
[0027] Second step, we can see that during the pushing process of the hydraulic jack, its thrust is continuous and adjustable, which means that the operator can adjust the pressure of the hydraulic system in a timely manner according to the actual situation of the part body 18 and the difficulty of demolding, so as to precisely control the magnitude and speed of the thrust. This flexibility ensures the smooth progress of the demolding process, neither being unable to demold due to too small a thrust nor damaging the part body 18 due to too large a thrust. In addition, the thrust transmission of the hydraulic jack is uniform and stable. Due to the pressure transmission characteristics of the liquid in the closed container, the thrust generated by the jack can act uniformly on the contact surface of the part body 18, avoiding the problem of local stress concentration that may occur in traditional demolding methods. This uniform force application method helps to reduce the deformation and damage of the part body 18 during the demolding process, ensuring the dimensional accuracy and surface quality of the part body 18. To sum up, the demolding method we proposed realizes the efficient and damage-free demolding of special-shaped parts with closed-angle structures by cleverly combining the working principle of the hydraulic jack with the width change characteristics of the part body 18 structure. This method not only improves the demolding efficiency, reduces the cost, but also significantly improves the demolding quality of the parts, providing new technical support and solutions for the development of the composite material manufacturing field.
[0028] Finally, it should be noted that: Obviously, the above embodiments are only examples given to clearly illustrate the present utility model, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present utility model.
Claims
1. A complex surface closed-angle mold, comprising a mold body (1) and a part body (18), wherein the mold body (1) includes side plates (11), a cover plate (15) and an end core mold (16), and the side plates (11) include two covering and pressing side plates (12), two side support plates (13) and two upper support plates (14), characterized in that, The cross-section of the end core mold (16) is consistent with that of the mold body (1), and through holes (17) are provided on the end core mold (16); Among them, the side plates (11) are made of the same material as the end core mold (16), and the part body (18) is placed inside the mold body (1).
2. The complex surface closed-angle mold according to claim 1, wherein The two side support plates (13) are symmetrically installed on both sides of the cover plate (15) and the end core mold (16).
3. The complex surface closed-angle mold according to claim 2, wherein The two upper support plates (14) are symmetrically arranged above the side support plates (13).
4. A complex surface closed-angle mold according to claim 3, wherein, The two upper support plates (14) are symmetrically installed on both sides of the cover plate (15) and the end core mold (16).
5. The complex profile closed-angle mold according to claim 4, wherein The two covering side plates (12) are respectively installed on both sides of the two side support plates (13).
6. The complex surface closed-angle mold according to claim 5, wherein The through holes (17) are symmetrically opened on the end core mold (16).