Brake supporting plate mold and using method thereof

Abstract

The invention relates to the technical field of casting molds, in particular to a brake supporting plate mold and a using method thereof.The mold comprises a first mold plate provided with a main runner model and a plurality of first models, and the first models are all connected with the main runner model; the second mold plate is provided with a plurality of second models; wherein a single first model corresponds to a single second model, and the first models, the main runner and the second models are all arranged to protrude out of the surfaces of the first mold plate and the second mold plate. Through the split type design of the first mold plate and the second mold plate, the multiple first molds and the multiple second molds can be arranged on the surfaces of the corresponding molds correspondingly, and communication of the multiple cavities is achieved through the main runner mold; compared with the prior art, the surface quality and the size precision of the brake supporting plate casting are improved, the forming defects are reduced, and the finished product qualification rate of the casting is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of casting molds, and in particular to a brake support plate mold and a use method thereof. Background Art

[0002] The brake support plate is a key component in the braking system of railway vehicles. It is mainly used to support the mounting structure of the brake device, withstand the mechanical load and thermal stress generated by the braking process, and maintain the stability and reliability of the braking system.

[0003] In the existing technology, brake support plate molds mostly adopt a traditional one-piece mold design, usually with only a few risers for shrinkage compensation to prevent defects such as shrinkage cavities and porosity in the casting. However, this type of mold has many shortcomings in actual production: First, the riser design has limited shrinkage compensation effect and may still cause defects within the casting, affecting its mechanical properties; second, due to the single mold forming structure, the casting is prone to uneven shrinkage during cooling, resulting in blurred surface details and large dimensional deviations, requiring extensive machining corrections later, increasing manufacturing costs; third, the utilization rate of molten metal in the mold cavity is low, the scrap rate is high, and the overall output rate is low, which is not conducive to mass production and cost control.

[0004] Therefore, there is an urgent need for a brake support plate mold that can make the mold surface molding features clearer and improve the finished product qualification rate of the casting. Summary of the Invention

[0005] In view of at least one of the above technical problems, the present invention provides a brake support plate mold and a method of using the same, and improves the mold to increase the qualified rate of finished castings.

[0006] According to a first aspect of the present invention, there is provided a brake support plate mold, comprising: A first mold plate is provided with a main runner model and a plurality of first models, wherein the plurality of first models are connected to the main runner model; a second mold plate provided with a plurality of second molds; Wherein, a single first model corresponds to a single second model, and the first model, the main channel and the second model are all configured to protrude from the surfaces of the first mold plate and the second mold plate.

[0007] In some embodiments of the present invention, the first mold plate is further provided with a branch channel model, and the branch channel model is distributed from the main channel model and connected to a plurality of the first models.

[0008] In some embodiments of the present invention, the plurality of first models are arranged axially symmetrically.

[0009] In some embodiments of the present invention, the main channel model is arranged along the first model distribution direction.

[0010] In some embodiments of the present invention, the branch channel model is configured to be connected to the first model at a position closest to the main channel model.

[0011] In some embodiments of the present invention, a plurality of circular features are provided on the first model and the second model.

[0012] In some embodiments of the present invention, a reserved slot portion is further provided on the first model.

[0013] In some embodiments of the present invention, the second mold plate is further provided with an exhaust hole, and the exhaust hole passes through the second mold plate.

[0014] According to a second aspect of the present invention, a method for using a brake support plate mold is also provided, comprising the following steps: preheating the first mold plate and the second mold plate to a set temperature; spraying a release agent onto the working surfaces of the first mold plate and the second mold plate; Evenly cover the preheated first mold plate and the second mold working surface with molding sand, and wait for the molding sand to solidify; removing the solidified sand shell from the first mold plate and the second mold plate; Close the two sand shells to form a complete cavity; injecting molten metal into the cavity; After the molten metal cools down, take out the casting; Clean the castings to remove impurities.

[0015] The beneficial effects of the present invention are as follows: the present invention adopts the split design of the first mold plate and the second mold plate, so that multiple first models and second models can be respectively arranged on the corresponding mold surfaces, and the connection of multiple cavities is realized through the main channel model; compared with the existing technology, the surface quality and dimensional accuracy of the brake support plate casting are improved, the molding defects are reduced, and the qualified rate of the finished castings is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a structural diagram of a brake support plate mold in an embodiment of the present invention; Figure 2 This is a structural diagram of the first mold plate in an embodiment of the present invention; Figure 3 This is a structural diagram of the second mold plate in an embodiment of the present invention; Figure 4 This is a flow chart of a method for using a brake support plate mold in an embodiment of the present invention.

[0018] Explanation of the accompanying drawings: 1. First mold plate; 11. Main channel model; 12. First model; 13. Branch channel model; a. Circular feature portion; 14. Reserved slot portion; 2. Second mold plate; 21. Second model; 22. Exhaust hole. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] like Figures 1 to 3The brake support plate mold shown includes: a first mold plate 1 and a second mold plate 2. The first mold plate 1 is provided with a main runner model 11 and a plurality of first models 12, and the plurality of first models 12 are connected to the main runner model 11; the second mold plate 2 is provided with a plurality of second models 21; wherein a single first model 12 corresponds to a single second model 21, and the first model 12, the main runner and the second model 21 are all provided to protrude from the surfaces of the first mold plate 1 and the second mold plate 2. The first mold plate 1 is provided with a main runner model 11 and a plurality of first models 12, and each first model 12 is connected through the main runner model 11, thereby forming a plurality of parallel distributed casting branch structures as a whole. The main runner model 11 is used to guide the molten metal to flow into each first model 12 area, realize multi-point simultaneous feeding, and facilitate improving the filling speed and uniformity of the casting. The second mold plate 2 is provided with multiple second molds 21 corresponding one-to-one with the first molds 12. Through the cooperation of the first and second mold plates 1 and 2, the multiple first molds 12 and the multiple second molds 21 form an independent and corresponding complete mold cavity structure for casting multiple brake support plate castings. The first mold 12, the second mold 21, and the main runner mold 11 are all designed as raised structures, that is, their surfaces are convex relative to the plane of the mold plate. This structure facilitates the laying and compaction of molding sand on the mold surface, and the resulting sand shell has good dimensional reproduction and surface detail fidelity, which contributes to the final molding accuracy of the casting.

[0023] In the above embodiment, the present invention adopts the split design of the first mold plate 1 and the second mold plate 2, so that multiple first models 12 and second models 21 can be respectively arranged on the corresponding mold surfaces, and the connection of multiple cavities is achieved through the main channel model 11; compared with the existing technology, the surface quality and dimensional accuracy of the brake support plate casting are improved, molding defects are reduced, and the qualified rate of finished castings is improved.

[0024] In an embodiment of the present invention, the first mold plate 1 is further provided with a branch channel model 13, which is dispersed from the main channel model 11 and connected to a plurality of first models 12. Figure 2As shown, the branch runner model 13 extends from the main runner model 11 in a dispersed manner and is respectively connected to multiple first models 12, forming a diversion network structure that diverges from a main runner to multiple branch runners and then connects to each first model 12. Structurally, the main runner model 11 serves as the main supply channel for molten metal, first receiving the molten metal from the gate; then, the branch runner model 13 plays a diversion role, guiding the molten metal to each first model 12 according to a predetermined path and rhythm, ensuring that each molding area can obtain sufficient and uniform molten metal filling, thereby realizing a "one main and multiple branches, one branch for one model" flow path in the overall mold. In this embodiment, the layout of the main runner model 11 combined with the branch runner model 13 makes the molten metal more reasonably distributed in the mold cavity, shortens the filling path, effectively avoids defects such as insufficient filling and cold shut, more efficiently utilizes metal and controls filling, reduces the generation of redundant riser metal, and improves the utilization rate of molten metal and the overall production yield.

[0025] In the embodiment of the present invention, in order to improve the utilization rate of the mold, as Figure 2 As shown, several first molds 12 are arranged axially symmetrically. The centerline of the main runner mold 11 or the first mold plate 1 can be used as the axis of symmetry, and the first molds 12 can be evenly distributed on both sides of the axis of symmetry, forming a symmetrically arranged structural layout, ensuring that the overall mold layout has good geometric balance and consistency. In this embodiment, the axisymmetric arrangement of the first molds 12 not only improves the overall balance and aesthetics of the mold structure, but also facilitates simultaneous heat dissipation in various parts during the cooling and shrinkage phase, preventing deformation or cracking of the casting due to uneven heating and improving dimensional stability.

[0026] In the embodiment of the present invention, please continue to refer to Figure 2 , the main channel model 11 is arranged along the distribution direction of the first models 12. The extension direction of the main channel model 11 is consistent with the arrangement direction of the multiple first models 12, is located on the center line of the arrangement of the multiple first models 12, and maintains smooth communication with each first model 12. In this embodiment, this structure makes the main channel model 11 the feeding trunk of each branch channel model 13, thereby constructing a linear or axisymmetric feeding system with the main channel as the center and the branch channels symmetrically distributed. A reasonable and efficient metal conveying channel is achieved, and the mold structure layout is optimized, thereby improving the casting yield.

[0027] In an embodiment of the present invention, the branch channel model 13 is configured to be connected to the first model 12 at a position closest to the main channel model 11. Figure 2As shown, the connection point between the end of each branch channel and its corresponding first model 12 is selected at the point where the geometric distance between the first model 12 and the main channel model 11 is the shortest. This structural design follows the principle of the shortest path. Through the hierarchical pouring channel system of "main channel-branch channel-cavity", the molten metal is diverted from a main channel into multiple cavities in sequence along the shortest path and with the least resistance. In this embodiment, by connecting the branch channel model 13 to the position closest to the main channel model 11 of the first model 12, an optimal path for molten metal circulation is achieved, improving the consistency of the finished product.

[0028] In the embodiment of the present invention, in order to ensure that the final casting has good assembly performance and structural stability, a plurality of circular feature parts a are provided at corresponding positions of the first model 12 and the second model 21, such as Figure 2 and Figure 3 As shown, the first and second molds 12 and 21 are provided with several circular features a. These circular features a are geometric components in the brake support plate product structure, used for positioning, load transfer, and coordination with other structural components, such as positioning, weight reduction, or enhancing local structural performance. The circular features a are pre-machined onto the surfaces of the first and second molds 12 and 21. Pre-defined geometry, depth, and dimensions ensure accurate formation in the sand mold after mold closure. In this embodiment, mold forming replaces machining steps, reducing machining processes and time, thereby improving production efficiency.

[0029] Furthermore, a reserved slot portion 14 is also provided on the first model 12. Figure 2 As shown, the reserved slot 14 is a recessed structure of a specific shape and depth, arranged on the surface of the first mold 12. It corresponds to the mounting groove or structural mating surface to be formed on the brake support plate casting. The reserved slot 14 can be elongated, curved, or has a specific curved surface. It is positioned in the functional area of ​​the brake support plate according to product design requirements to meet subsequent assembly, positioning, or other functional requirements. In this embodiment, the reserved slot 14 can be controlled in depth, width, wall thickness, and shape. In-situ molding reduces human error and improves the integration level of the casting process.

[0030] In the embodiment of the present invention, the second mold plate 2 is further provided with an exhaust hole 22, which passes through the second mold plate 2. Figure 3As shown, the exhaust holes 22 are used to release the gas or air in the mold cavity in a timely manner during the process of sand pressing, sand solidification and molten metal filling, to prevent gas from being trapped and forming casting defects such as pores and bubbles. The exhaust holes 22 are distributed around the area where the second mold plate 2 contacts the mold cavity. The aperture of the exhaust holes 22 can be set to a small through hole according to the process requirements, which ensures sufficient exhaust capacity without causing leakage of molten metal. In this embodiment, during the process of molten metal filling, the original air in the mold cavity or the gas generated by high temperature can be quickly discharged through the exhaust holes 22 to prevent gas from being trapped, which helps to prevent mold damage or safety hazards caused by high pressure.

[0031] In an embodiment of the present invention, a method for using the brake support plate mold is also provided, specifically as follows: Figure 4 As shown in , since the usage method has been described in detail above, it will not be described here in detail. Those skilled in the art can refer to the above to understand, including the following steps: S10: preheating the first mold plate and the second mold plate to a set temperature; S20: spraying a release agent onto the working surfaces of the first mold plate and the second mold plate; S30: evenly covering the preheated first mold plate and the second mold working surface with molding sand, and waiting for the molding sand to solidify; S40: removing the solidified sand shell from the first mold plate and the second mold plate; S50: closing the two sand shells to form a complete mold cavity; S60: injecting molten metal into the cavity; S70: After the molten metal cools down, the casting is taken out; S80: Clean the castings to remove impurities.

[0032] Those skilled in the art will appreciate that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A brake support plate mold, characterized in that: include: A first mold plate is provided with a main runner model and a plurality of first models, wherein the plurality of first models are connected to the main runner model; a second mold plate provided with a plurality of second molds; Wherein, a single first model corresponds to a single second model, and the first model, the main channel and the second model are all configured to protrude from the surfaces of the first mold plate and the second mold plate.

2. The brake support plate mold according to claim 1, characterized in that: The first mold plate is further provided with a branch channel model, which is distributed from the main channel model and connected to a plurality of the first models.

3. The brake support plate mold according to claim 2, characterized in that: The plurality of first models are arranged axially symmetrically.

4. The brake support plate mold according to claim 2, characterized in that: The main channel model is arranged along the first model distribution direction.

5. The brake support plate mold according to claim 2, characterized in that: The branch channel model is configured to be connected to the first model at a position closest to the main channel model.

6. The brake support plate mold according to claim 1, characterized in that: Several circular features are provided on the first model and the second model.

7. The brake support plate mold according to claim 6, characterized in that: The first model is also provided with a reserved slot portion.

8. The brake support plate mold according to claim 7, characterized in that: The second mold plate is further provided with an exhaust hole, which passes through the second mold plate.

9. A method for using the brake support plate mold according to any one of claims 1 to 8, characterized in that: The following steps are involved: preheating the first mold plate and the second mold plate to a set temperature; spraying a release agent onto the working surfaces of the first mold plate and the second mold plate; Evenly cover the preheated first mold plate and the second mold working surface with molding sand, and wait for the molding sand to solidify; removing the solidified sand shell from the first mold plate and the second mold plate; Close the two sand shells to form a complete cavity; injecting molten metal into the cavity; After the molten metal cools down, take out the casting; Clean the castings to remove impurities.

Images