A mold core and mold for forming a static scroll disk
By designing a high-toughness split structure and core core in a static scroll mold, the problem of early failure caused by concentrated stress at the thin wall of the mold is solved, and the service life of the mold and the improvement of production efficiency are achieved.
Patent Information
- Application Number
- CN202420964416.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-05-07
AI Technical Summary
During the molding process of the static scroll, the thin-walled parts of the mold are easily deformed or broken due to stress concentration, resulting in early failure of the mold, increasing production costs and affecting product quality.
A die core for forming a static scroll disk is designed, which includes a core body and a split structure. The toughness of the split structure is higher than that of the core body. It is used to form the air intake groove part of the static scroll disk, and form an annular outer wall through a material ring. The mating surface of the split structure and the core body is an arc surface to reduce stress concentration.
Through the design of the split structure, the stress concentration of the mold in the thin-walled part is reduced, the service life of the mold is extended, the production cost is reduced, and the product quality and production efficiency are improved.
Smart Images
Figure CN222695928U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of mold manufacturing, and in particular to a mold core and a mold thereof for molding a static scroll disk. Background Art
[0002] The fixed scroll is a key component used in compressors and other machinery. It is usually made of aluminum alloy and other materials, with good corrosion resistance and light weight. The role of the fixed scroll in the machinery is to convert the fluid into rotational motion, or to convert the rotational motion into fluid power. This process depends on the specific shape and structure of the fixed scroll.
[0003] During the manufacturing process, in order to form complex shapes and structures that can achieve the above-mentioned transformation effect, the static scroll disk usually needs to be forged, cast or injection molded through a relatively sophisticated mold. Among them, during the molding process, due to the complexity and particularity of the shape of the static scroll disk, the mold will be subjected to uneven pressure distribution during the molding process, and this eccentric load may cause the mold to deform, thereby affecting the quality and precision of the product. At the same time, in order to achieve specific functions, certain parts on the static scroll disk (such as the air inlet groove, etc.) need to be designed to be relatively thin. These parts are prone to deformation or breakage during the molding process due to their thin wall thickness and low strength. At the same time, they are more likely to deform and break when the mold is subjected to force, which eventually leads to early failure of the mold, which not only increases production costs, but also affects production efficiency and product quality.
[0004] Therefore, the prior art has defects and needs to be improved and developed. Utility Model Content
[0005] In order to solve the problems of the above-mentioned prior art, the utility model provides a core and a mold for forming a static scroll disk, so as to solve the technical problem in the prior art that the thin-walled parts in the mold are easily deformed and broken due to stress concentration during the forging production of the static scroll disk, thereby leading to early failure of the mold.
[0006] In order to achieve the above-mentioned purpose, the first aspect of the present invention proposes the following technical solution: a mold core for forming a static scroll disk, comprising:
[0007] A core body, one end of which has a first vortex structure and a second vortex structure, wherein the first vortex structure is used to form an annular outer wall of a fixed scroll body portion, and the second vortex structure is used to form a vortex-shaped fixed blade portion of the fixed scroll;
[0008] The split structure is not integrated with the core body, and the toughness of the split structure is higher than that of the core body; the split structure is used to cooperate with the first scroll structure and the second scroll structure to form the air inlet groove part of the fixed scroll disk.
[0009] Furthermore, it also includes a material beating ring, which is sleeved on the core body and is used to cooperate with the first vortex structure to form an annular outer wall of the fixed vortex disk body part.
[0010] Furthermore, the mating surface of the split structure on the side close to the second vortex structure is a cambered surface.
[0011] Furthermore, the split structure and the first vortex structure are arranged in the same circumferential direction.
[0012] Furthermore, one end of the core body away from the first vortex structure and the second vortex structure serves as its mounting side, and one end of the split structure passes through the core body and is arranged on the same mounting surface as its mounting side.
[0013] Furthermore, the split structure is an arc-shaped long plate-like structure, and is arranged with its length parallel to the axial direction of the core body.
[0014] Furthermore, the split structure and the core body are in a non-detachable connection.
[0015] Furthermore, the split structure is interference fit with the core.
[0016] Furthermore, the split structure and the core body are detachably connected.
[0017] The second aspect of the utility model proposes the following technical solution:
[0018] A mold comprises a mold core for molding a stationary scroll disk as described in the first aspect of the present application.
[0019] Beneficial effects:
[0020] It can be seen from the above technical solutions that the technical solution of the utility model provides a mold core and a mold for forming a static scroll disk, which makes the stress distribution more uniform by designing the position prone to cracking in the mold into a split structure, reducing the material fatigue failure caused by local stress concentration in the mold. In addition, the design of the split structure also facilitates the maintenance and replacement of the mold, improves the overall durability and convenience of maintenance of the mold, and also improves production efficiency and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.
[0022] Figure 1A schematic diagram of the overall structure of a mold core for forming a static scroll disk provided in an embodiment of the present application.
[0023] Figure 2 Another schematic diagram of the overall structure of the mold core for forming the static scroll disk provided in an embodiment of the present application.
[0024] Figure 3 A schematic diagram of the structure of the core and the split structure provided in an embodiment of the present application.
[0025] Figure 4 A structural schematic diagram of a split structure is provided for an embodiment of the present application.
[0026] In the figure, the meanings of the reference numerals are as follows:
[0027] Core body 1, first scroll structure 2, second scroll structure 3, split structure 4, and punching ring 5. DETAILED DESCRIPTION
[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.
[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0030] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0031] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0032] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.
[0033] An embodiment of the utility model provides a mold for forming a static scroll disk, in which the mold core is a split design, wherein the split structure can reduce stress concentration in the mold core during the molding process, make stress distribution more uniform, reduce material fatigue of the mold due to stress concentration, and avoid premature failure of the mold.
[0034] Reference Figure 1, a core for forming a static scroll disk provided in an embodiment of the utility model, the core is applied to a forging die for a static scroll disk, the die also includes an upper die and a lower die (neither of which is shown in the figure), which are used to cooperate in forming and shaping a metal blank to obtain a static scroll disk product. Among them, the upper die can be installed on the movable part of the forging machine, and the lower die is fixed on a pedestal. Depending on the forging process, the core can be fixed in the upper die or the lower die. When the driving force from the top is used or the product needs to be formed from above, the core can be fixed in the upper die; when pressure is applied to the blank through the bottom or a specific shape needs to be formed below the metal blank, the core can be fixed in the lower die, and no specific limitation is made here.
[0035] Reference Figure 1 The mold core for forming the static scroll disk includes: a core body 1, one end of the core body 1 has a first scroll structure 2 and a second scroll structure 3, the first scroll structure 2 and the second scroll structure 3 are integrated, and together with the top of the core body 1 form a accommodating space for obtaining the internal scroll structure of the static scroll disk, wherein the first scroll structure 2 is used to form the annular outer wall of the static scroll disk body part, and the second scroll structure 3 is used to form the vortex-shaped static blade part of the static scroll disk.
[0036] Reference Figure 1 and Figure 3 The mold core for forming the static scroll disk also includes a split structure 4, which is fixedly arranged on the core body 1 but is not integrated with the core body 1, and the toughness of the split structure 4 is higher than that of the core body 1; the split structure 4 is used to cooperate with the first scroll structure 2 and the second scroll structure 3 to form the air inlet groove part of the static scroll disk.
[0037] In view of the problem that the static scroll disk forming mold is prone to early failure, in the embodiments of the present utility model, the static scroll disk forming mold core is improved mainly from two aspects: reducing stress concentration and improving material performance.
[0038] In terms of reducing stress concentration, refer to Figure 1 and Figure 4 In the mold core for forming the static scroll disk, the mating surface between the split structure 4 and the core body 1 is an arc surface, which helps to disperse the contact stress and reduce stress concentration.
[0039] In terms of improving material properties, the split structure 4 and the core body 1 are made of materials with different material properties, respectively, in order to achieve a relatively consistent service life of the two under different stress conditions. In the present embodiment, the toughness of the split structure 4 is higher than that of the core body 1. Specifically, the other parts of the mold core and the mold as a whole continue to use raw materials, and the split structure 4 can be made of materials with better performance, such as YXR3 high-speed steel, etc., to improve the split structure 4's ability to resist fracture during the static vortex disk forming process. It is expected that in actual production, the final failure mode of the mold will still be cracking at the split structure 4 (i.e., the thin-walled part), but at this time the service life of the mold has reached the expected effect, so it can be directly replaced to ensure the continuous output of static vortex disk products, improve production efficiency, and greatly save production costs.
[0040] Reference Figure 1 and Figure 2 The mold core for forming the static scroll disk also includes a punching ring 5, which is sleeved on the core body 1. The two have a certain height difference, that is, the top height of the punching ring 5 is slightly lower than the bottom height of the accommodating space, which is used to cut and separate the redundant part of the metal blank during the forging process, ensuring the size and shape accuracy of the static scroll disk produced during the forging process, and helping to improve the overall quality of the finished product.
[0041] Reference Figure 2 , is another overall structural schematic diagram of the mold core for forming the static scroll disk in the embodiment of the present application. Among them, the end of the core body 1 away from the first scroll structure 2 and the second scroll structure 3 is used as its installation side. Figure 4 The split structure 4 can be an integrally formed arc-shaped long plate structure, and its length is arranged parallel to the axial direction of the core 1, so that it is easy to process and install. One end of the split structure 4 can pass through the core 1 and be arranged on the same installation surface as its installation side, ensuring stable and reliable installation, which helps to control the precise formation of the second scroll structure 3 inside the fixed scroll.
[0042] The static scroll disk molding mold core adopts a split design, which means that the core body 1 and the split structure 4 need to be produced separately and then assembled for use. In actual production, the matching method between the two can be selected according to actual conditions and needs.
[0043] According to different fixing methods, the core body 1 and the split structure 4 can be divided into a detachable connection and a non-detachable connection. When a detachable connection method is adopted, the split structure 4 can be fixed to the core body 1 by various fasteners, which makes the maintenance and replacement of the mold core more convenient, and also makes it easier for the manufacturer to adjust the shape or installation position of the split structure 4 accordingly when replacing or modifying certain parts of the mold core. Considering that in the high temperature environment of forging, the connection between the core body 1 and the split structure 4 may become loose, affecting the accuracy of the blank and causing an increase in the defective rate of the product, therefore, in the embodiment of the present application, a non-detachable connection is adopted between the core body 1 and the split structure 4. Specifically, the split structure 4 and the core body 1 can be inserted into the core body 1 by means of pressing or heating, so that a close fit is formed between the two, which improves the stability of the overall structure.
[0044] In summary, the mold core and mold for static scroll disk molding provided by the utility model effectively alleviate the stress concentration problem by designing the position prone to cracking in the mold into a split structure, thereby reducing the risk of deformation and breakage of the mold in the thin-walled part and extending the service life of the mold; at the same time, it can also reduce the frequency of mold replacement and maintenance, thereby improving the stability and efficiency of the production line.
[0045] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.
[0046] The above is a detailed introduction to a core and a mold for forming a static scroll disk provided in an embodiment of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and core idea of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A mold core for forming a fixed scroll disk, characterized in that: include: A core body, one end of which has a first vortex structure and a second vortex structure, wherein the first vortex structure is used to form an annular outer wall of a fixed scroll body portion, and the second vortex structure is used to form a vortex-shaped fixed blade portion of the fixed scroll; A split structure is not integrated with the core, and the toughness of the split structure is higher than the toughness of the core; The split structure is used to cooperate with the first scroll structure and the second scroll structure to form an air inlet groove portion of the fixed scroll plate.
2. The fixed scroll forming mold core according to claim 1, characterized in that: It also includes a material beating ring, which is sleeved on the core body and is used to cooperate with the first vortex structure to form an annular outer wall of the fixed vortex disk body part.
3. The fixed scroll forming mold core according to claim 1, characterized in that: The mating surface of the split structure on a side close to the second scroll structure is a cambered surface.
4. The fixed scroll forming mold core according to claim 1, characterized in that: The split structure and the first vortex structure are arranged in the same circumferential direction.
5. The fixed scroll forming mold core according to claim 1, characterized in that: One end of the core body away from the first scroll structure and the second scroll structure serves as its mounting side, and one end of the split structure penetrates through the core body and is arranged on the same mounting surface as its mounting side.
6. The fixed scroll forming mold core according to claim 1, characterized in that: The split structure is an arc-shaped long plate-like structure, and its length is arranged parallel to the axial direction of the core body.
7. The fixed scroll forming mold core according to claim 1, characterized in that: The split structure and the core body are in a non-detachable connection.
8. The fixed scroll forming mold core according to claim 7, characterized in that: The split structure is interference fit with the core.
9. The fixed scroll forming mold core according to claim 1, characterized in that: The split structure and the core body are detachably connected.
10. A mold, characterized in that: The mold includes the fixed scroll disk molding core as described in any one of claims 1 to 9.