Box mold
By using a split-structure box mold made of coated sand, the problems of poor surface quality and difficulty in recycling waste sand in the water glass sand casting process are solved, thereby reducing the amount of sand used and reusing waste sand, thus reducing production costs and environmental impact.
Patent Information
- Application Number
- CN202520161347.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-01-23
AI Technical Summary
In existing technologies, the water glass sand casting process for box molds results in poor surface quality, high labor intensity, high cost, and difficulty in recycling waste sand, which seriously affects the ecological environment.
The split-structure box mold made of coated sand material includes a core mold and an outer mold, which are fixed by mortise and tenon structure to reduce the amount of sand used and realize the reuse of waste sand.
It improved the surface quality of the box mold, reduced labor intensity and production costs, and reduced the impact on the ecological environment.
Smart Images
Figure CN223748487U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of molds, in particular to a box mold. BACKGROUND
[0002] The buffer is a key component in the hook buffer braking of a railway high-speed heavy haul vehicle, wherein the box is a main part of the buffer, is a box casting, is usually cast by using E-grade steel material, and the weight of a single piece can reach 85 Kg. The existing technology adopts a water glass sand casting process, so that the surface quality of the box is poor, subsequent surface treatment is required, the labor intensity and cost of workers are high, and the waste sand produced by the water glass sand process cannot be recycled, which causes serious damage to the ecological environment. CONTENT OF THE UTILITY MODEL
[0003] The present application provides a box mold, reduces the sand consumption of the box mold, improves the recycling of waste sand, and reduces the impact on the ecological environment.
[0004] In a first aspect, the present application provides a box mold, which comprises a core mold and an outer mold nested in the core mold; wherein the core mold and the outer mold are both prepared by using a coated sand material;
[0005] The core mold comprises a first sub-core and a second sub-core fixed in combination; the outer mold comprises a first sub-outer mold and a second sub-outer mold fixed in combination; wherein the first sub-outer mold and the second sub-outer mold are fixed through a mortise and tenon structure.
[0006] In the above technical solution, the outer mold and the core mold are both in a split structure, so that the core mold and the outer mold can both be prepared by using a coated sand, and the outer mold and the core mold can be prepared into a relatively thin mold, thereby reducing the sand consumption, and the waste coated sand can be recycled, thereby reducing the impact on the ecological environment.
[0007] In a specific implementable embodiment, a clamping plate assembly is further included; the clamping plate assembly comprises two clamping plates arranged on two sides opposite to each other of the first sub-outer mold and the second sub-outer mold, and a bolt assembly for locking the two clamping plates.
[0008] In a specific implementable embodiment, along the height direction of the outer mold, the top of the clamping plate is provided with two first lifting lugs in a spaced manner, and the two first lifting lugs are arranged on two sides of the injection port of the outer mold.
[0009] The two vertical side walls opposite to each other of the clamping plate are respectively provided with a second lifting lug, and the second lifting lug is away from the injection port.
[0010] The bolt assembly is correspondingly arranged in the first lug and the second lug of the opposite two clamping plates.
[0011] In one specific implementation, the first sub-core and the second sub-core are bonded.
[0012] In one specific implementation, the outer surface of the first sub-core and the second sub-core is coated with a high-temperature-resistant material layer.
[0013] In one specific implementation, the mortise and tenon structure includes a protruding structure arranged in the first sub-outer mold and a recessed structure arranged in the second sub-outer mold.
[0014] In a second aspect, a method for using the box mold is provided, the method comprising the following steps:
[0015] Splicing and fixing the first sub-core and the second sub-core to form a core mold;
[0016] Splicing the first sub-outer mold and the second sub-outer mold on the outside of the core mold to form an outer mold, completing the assembly of the box mold;
[0017] Placing the box mold into the sand box and filling the gap between the sand box and the box mold with steel shots;
[0018] Pouring from the pouring inlet of the box mold.
[0019] In the above technical solution, the outer mold and the core mold are both divided into two parts, so that the core mold and the outer mold can be made of coated sand, and the outer mold and the core mold can be made into thin molds, reducing the amount of sand used, and the discarded coated sand can be reused, reducing the impact on the ecological environment.
[0020] In one specific implementation, the splicing and fixing the first sub-core and the second sub-core to form a core mold specifically includes:
[0021] Bonding and fixing the first sub-core and the second sub-core, and coating the outer surface of the first sub-core and the second sub-core with a high-temperature-resistant material layer.
[0022] In one specific implementation, the splicing the first sub-outer mold and the second sub-outer mold on the outside of the core mold to form an outer mold specifically includes:
[0023] The first sub-outer mold and the second sub-outer mold are spliced and positioned by the mortise and tenon structure;
[0024] The first sub-outer mold and the second sub-outer mold are clamped and fixed by the clamping assembly.
[0025] In one specific implementation, the placing the box mold into the sand box and filling the gap between the sand box and the box mold with steel shots specifically includes:
[0026] spacedly arranging a plurality of the box molds in the sand box, filling the gap between the sand box and the box molds and between adjacent box molds with steel shots, and exposing the injection port of each box mold outside the filled steel shots. BRIEF DESCRIPTION OF DRAWINGS
[0027] Figure 1 a structural schematic diagram of the box mold provided by the embodiment of the present application;
[0028] Figure 2 a structural schematic diagram of the core mold provided by the embodiment of the present application;
[0029] Figure 3 a structural schematic diagram of the outer mold provided by the embodiment of the present application;
[0030] Figure 4 a flow chart of the method for using the box mold provided by the embodiment of the present application.
[0031] outer mold 10, first sub-outer mold 11, second sub-outer mold 12, core mold 20, first sub-core 21, second sub-core 22, clamp plate assembly 30, clamp plate 31, first lug 311, second lug 312, bolt assembly 32, injection port 40, mortise and tenon structure 50, protruding structure 51, recessed structure 52 DETAILED DESCRIPTION
[0032] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be described in further detail below with reference to the accompanying drawings.
[0033] It should be noted that the technical terms or scientific terms used in the one or more embodiments of the present disclosure should be understood as the general meaning understood by the person skilled in the art to which the present disclosure belongs, unless otherwise defined. The terms "first", "second", and the like used in the one or more embodiments of the present disclosure do not represent any order, number, or importance, but are only used to distinguish different components. The terms "include", "contain", and the like mean that the elements or objects before the terms cover the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and the like are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right", and the like are only used to represent relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships may also change accordingly.
[0034] To facilitate the understanding of the box mold provided by the embodiments of the present application, the application scenario thereof is first described. The box mold provided by the embodiments of the present application is applied to the casting of workpieces. Some larger workpieces are cast by using a box mold, such as a bumper box, which is cast by using water glass sand or resin sand. The original intermediate core of the box casting is made of solid water glass sand, and the outer mold is made of water glass sand with a thickness of 80 mm, resulting in a large mold thickness, a large amount of sand, and discarded sand after casting that cannot be reused, which has a large impact on the ecological environment. Therefore, the embodiments of the present application provide a box mold to reduce the amount of sand used in the mold, while reusing the discarded sand and reducing the impact on the ecological environment. The box mold is described in detail below in combination with specific drawings and embodiments.
[0035] Reference Figure 1 , Figure 2 and Figure 3 , Figure 1 Fig. 1 shows a structural schematic diagram of a box mold provided by an embodiment of the present application, Figure 2 Fig. 2 shows a structural schematic diagram of a core mold, Figure 3 Fig. 3 shows a structural schematic diagram of an outer mold. The box mold provided by the embodiments of the present application mainly includes a core mold 20 and an outer mold 10, wherein the outer mold 10 is nested on the outside of the core mold 20, and a gap is provided between the outer mold 10 and the core mold 20 to form a pouring space. When preparing a workpiece, a high-temperature metal liquid flows into the pouring space between the core mold 20 and the outer mold 10, thereby forming the workpiece. It should be understood that the outer mold 10 provided by the embodiments of the present application has an injection port 40, and the high-temperature metal liquid can be injected into the pouring space through the injection port 40.
[0036] In the specific preparation, the core mold 20 and the outer mold 10 provided by the embodiment of the present application are both prepared by using the coated sand material. The coated sand is the molding sand or core sand which is coated with a solid resin film on the surface of the sand particles before molding. The coated sand has good thermal stability, good thermal conductivity, good fluidity, high strength, high temperature resistance, low expansion and other advantages. When the core mold 20 and the outer mold 10 are prepared by using the coated sand, the core mold 20 and the outer mold 10 have the advantages of the coated sand.
[0037] In addition, in order to ensure that the core mold 20 and the outer mold 10 can be prepared by using the coated sand, in the embodiment of the present application, the core mold 20 and the outer mold 10 are prepared by using a split structure. The mold of a larger size is divided into smaller parts. Specifically, the core mold 20 includes a first sub-core 21 and a second sub-core 22, wherein the first sub-core 21 and the second sub-core 22 are oppositely arranged and can be fixed by splicing to form the core mold 20. The outer mold 10 includes a first sub-outer mold 11 and a second sub-outer mold 12. The first sub-outer mold 11 and the second sub-outer mold 12 are oppositely arranged and can be fixed by splicing to form the outer mold 10. In addition, when the first sub-outer mold 11 and the second sub-outer mold 12 are spliced, the first sub-outer mold 11 and the second sub-outer mold 12 are fixed by the mortise and tenon structure 50. The mortise and tenon structure 50 is used to position the first sub-outer mold 11 and the second sub-outer mold 12.
[0038] As can be seen from the above description, in the box mold provided by the embodiment of the present application, the outer mold 10 and the core mold 20 both adopt a split structure, so that the core mold 20 and the outer mold 10 can be prepared by using the coated sand, and the outer mold 10 and the core mold 20 can be prepared into thinner molds, thereby reducing the amount of sand used, and the discarded coated sand can be reused, thereby reducing the impact on the ecological environment.
[0039] In the specific preparation of the core mold 20, the first sub-core 21 and the second sub-core 22 are adhesively connected. Specifically, an adhesive is coated on the opposite surfaces of the first core and the second core. When the first sub-core 21 and the second sub-core 22 are fixed, the first sub-core 21 and the second sub-core 22 can be adhesively fixed by the adhesive.
[0040] In an optional scheme, since the outer surface of the core mold 20 is the surface in contact with the high-temperature metal liquid, a high-temperature resistant material layer is coated on the outer surface of the first sub-core 21 and the second sub-core 22 when the core mold 20 is arranged. The high-temperature resistant material layer is used to protect the core mold 20. The high-temperature resistant material layer can be an inorganic compound material or a high-molecular polymer material.
[0041] When the box mold is used, the box mold provided by the embodiment of the present application adopts a split structure, and the outer mold 10 is split to facilitate material taking when the workpiece is taken out. Therefore, when the outer mold 10 is arranged, the two sub-outer molds 10 of the outer mold 10 are fixed in a detachable manner. Exemplarily, the box mold further comprises a clamping plate assembly 30 for clamping and fixing the first sub-outer mold 11 and the second sub-outer mold 12.
[0042] In an implementable scheme, the clamping plate assembly 30 comprises two clamping plates 31 arranged oppositely and a bolt assembly 32 for fastening the two clamping plates 31. The two clamping plates 31 are arranged on the opposite sides of the first sub-outer mold 11 and the second sub-outer mold 12, and the bolt assembly 32 is arranged on the two clamping plates 31 and locks and fixes the two clamping plates 31 to clamp and fix the first sub-outer mold 11 and the second sub-outer mold 12. That is, when arranged, the two clamping plates 31 are arranged at intervals along the arrangement direction of the first sub-outer mold 11 and the second sub-outer mold 12, and the first sub-outer mold 11 and the second sub-outer mold 12 are arranged between the two clamping plates 31.
[0043] In a specific implementable scheme, the clamping plate assembly 30 comprises two clamping plates 31 arranged on the opposite sides of the first sub-outer mold 11 and the second sub-outer mold 12 and a bolt assembly 32 for locking the two clamping plates 31. The bolt assembly 32 comprises a bolt and a nut. The bolt is arranged on the two clamping plates 31 and locks and fixes the two clamping plates 31 by the nut.
[0044] In a specific implementable scheme, the number of the bolt assemblies 32 is plural, and the plurality of bolt assemblies 32 are arranged on the outer side of the outer mold 10. Exemplarily, along the height direction of the outer mold 10, the top of the clamping plate 31 is provided with two first lugs 311 arranged at intervals, and the two first lugs 311 are arranged on the two sides of the injection port 40 of the outer mold 10. In addition, a second lug 312 is arranged on each of the two opposite vertical side walls of the clamping plate 31, and the second lug 312 is away from the injection port 40. The bolt assembly 32 is arranged on the first lug 311 and the second lug 312 of the two opposite clamping plates 31 one by one. That is, the outer mold 10 provided by the embodiment of the present application has four bolt assemblies 32, two of which are arranged on two groups of first lugs 311 (one group is composed of the two first lugs 311 of the two opposite clamping plates 31), and the other two bolt assemblies 32 are arranged on the side walls of the outer mold 10, so as to clamp and fix the outer mold 10. The use of the plurality of bolt assemblies 32 can improve the stability of the clamping plate 31 in clamping the outer mold 10 and ensure the casting effect of the workpiece.
[0045] When the first sub-outer mold mold 11 and the second sub-outer mold mold 12 are aligned through the mortise and tenon structure 50, the mortise and tenon structure 50 includes the protruding structure 51 arranged on the first sub-outer mold mold 11 and the recessed structure 52 arranged on the second sub-outer mold mold 12. When the two are matched, the protruding structure 51 is inserted into the recessed structure 52, thereby ensuring the alignment accuracy of the two and improving the effect of casting the workpiece.
[0046] The buffer is a key component in the hook buffer braking of a railway high-speed heavy haul vehicle. The box is a main part of the buffer, and is a box-shaped casting made of E-grade steel material. For products with a large batch size, the most suitable process is constantly sought to improve production efficiency, improve product quality, reduce production cost, and reduce the impact on the environment. The technical solution disclosed in the application adopts a precoated sand shell (outer mold mold 10) combined through a mortise and tenon structure 50 to perfectly replace a water glass sand shell.
[0047] Reference Figure 4 To facilitate understanding of the box mold provided in the embodiments of the application, the embodiments of the application further provide a use method of the box mold. The method comprises the following steps:
[0048] Step 001: The first sub-core part 21 and the second sub-core part 22 are spliced and fixed to form a core mold.
[0049] Specifically, when the core mold is formed, the first sub-core part 21 and the second sub-core part 22 are adhesively fixed, and a high-temperature-resistant material layer is coated on the outer surfaces of the first sub-core part 21 and the second sub-core part 22. For details, reference can be made to the detailed description in the above structure.
[0050] Step 002: The first sub-outer mold mold and the second sub-outer mold mold are spliced on the outside of the core mold to form an outer mold mold, and the assembly of the box mold is completed.
[0051] Specifically, the first sub-outer mold mold and the second sub-outer mold mold are spliced and positioned through a mortise and tenon structure, and the first sub-outer mold mold and the second sub-outer mold mold are clamped and fixed through a clamping assembly. For details, reference can be made to the detailed description in the above structure.
[0052] Step 003: The box mold is placed in a sand box, and the gap between the sand box and the box mold is filled with steel shots.
[0053] Specifically, a plurality of box molds are arranged at intervals in the sand box, and the gap between the sand box and the box mold and the gap between adjacent box molds are filled with steel shots. The injection port of each box mold is exposed outside the filled steel shots.
[0054] Step 004: Pouring from the injection port of the box mold.
[0055] Specifically, the molten metal liquid is injected into the box mold through the injection port, and after the metal liquid is condensed, the demolding is performed. When demolding, the clamping plate assembly can be removed first, and then the first and second sub-outer mold molds of the outer mold are separated.
[0056] As can be seen from the above description, the preparation method provided by the embodiments of the present application adopts a split structure for the outer mold and the core mold, so that the core mold and the outer mold can be prepared by using coated sand, and the outer mold and the core mold can be prepared into thin molds, thereby reducing the amount of sand used, and the discarded coated sand can be reused, thereby reducing the impact on the ecological environment.
[0057] One or more embodiments of the present specification are intended to cover all such alternatives, modifications and variations falling within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principle of one or more embodiments of the present specification should be included in the protection scope of the present disclosure.
[0058] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A box mold characterized by, The application relates to a core mold and an outer mold nested in the core mold; wherein the core mold and the outer mold are both prepared from coated sand materials; the core mold comprises a first sub-core and a second sub-core which are fixedly combined; the outer mold comprises a first sub-outer mold and a second sub-outer mold which are fixedly combined; wherein the first sub-outer mold and the second sub-outer mold are fixed through a mortise and tenon structure. The application further comprises a clamping plate assembly; the clamping plate assembly comprises two clamping plates arranged on two sides of the first sub-outer mold and the second sub-outer mold and a bolt assembly for locking the two clamping plates. Two first lifting lugs are arranged on the top of the clamping plate and are arranged on two sides of the injection port of the outer mold along the height direction of the outer mold.
2. The box mold of claim 1, wherein, Two second lifting lugs are arranged on the opposite vertical side walls of the clamping plate and are away from the injection port.
3. The box mold of claim 2, wherein, The bolt assembly is arranged in the first lifting lug and the second lifting lug of the opposite clamping plates. The first sub-core and the second sub-core are connected through bonding. The outer surface of the first sub-core and the second sub-core is coated with a high-temperature-resistant material layer.
4. The box mold of claim 2, wherein, The mortise and tenon structure comprises a protruding structure arranged on the first sub-outer mold and a recess structure arranged on the second sub-outer mold.
5. The box mold of claim 4, wherein, 6. The box mold of any one of claims 1 to 5, wherein,