Lightweight assembly casting tool
By designing casting fixtures for lightweight components, and utilizing a combination of cold risers and venting rods, along with the use of chills, the cold shut defect problem in the casting process of Shaanxi Automobile's lightweight components was solved, thereby improving product quality and production efficiency.
Patent Information
- Application Number
- CN202422976340.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2034-12-04
AI Technical Summary
In existing equipment, Shaanxi Automobile's lightweight assembly components are characterized by large overall size, uneven wall thickness, and multiple isolated hot spots, which makes mold design and casting processes difficult. Furthermore, they are prone to cold shut defects during production, resulting in a high scrap rate and high costs.
A lightweight modular casting fixture was designed, including an upper mold plate and a lower mold plate. It is equipped with a first cold riser, a first venting rod, a second venting rod and a third venting rod. Combined with multiple chills, it reduces casting defects by solidifying sequentially at the hot spots of the casting. Sand cores are used to assist in mold parting and expand the usable area of the mold plate.
It effectively reduces defects such as shrinkage cavities, porosity, air holes, and cold shuts in castings, lowers the scrap rate, and improves product quality and process yield.
Smart Images
Figure CN223902873U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a package equipment technical field especially relates to a lightweight assembly casting tool. BACKGROUND
[0002] The lightweight assembly of Shaanxi Automobile is a new product obtained by integrating multiple sub-components and lightweight design, and belongs to a critical component on an automobile chassis. The product quality and mechanical properties of the lightweight assembly can directly affect the driving safety of heavy-duty trucks.
[0003] However, in the existing equipment, the overall size of the product is large, the wall thickness is uneven, multiple isolated hot spots are dispersed in the entire casting, the mold design and casting process are difficult, and there are many thin-walled ribs on the lightweight assembly of Shaanxi Automobile. In actual production, cold shut defects are prone to occur at the side far away from the gate, the scrap rate is high, and the cost is high during batch production. Therefore, a lightweight assembly casting tool is proposed. UTILITY MODEL CONTENT
[0004] The utility model discloses a lightweight assembly casting tool which solves the problems in the prior art.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a lightweight assembly casting tool, comprising an upper die plate and a lower die plate, the upper die plate is provided with four first positioning holes on one side, the upper die plate is fixedly connected with an upper mold on one side, the upper mold is provided with a first hot riser and a second hot riser on one side, the upper mold is movably provided with a sand core, the upper mold is provided with a first cold riser on one side, and the upper mold is fixedly connected with a first gate cup on one side.
[0006] Further description of the above technical scheme:
[0007] The upper mold is fixedly connected with a first exhaust rod, a second exhaust rod and a third exhaust rod on one side, and the first exhaust rod, the second exhaust rod and the third exhaust rod are away from the side of the first gate cup.
[0008] Further description of the above technical scheme:
[0009] The lower die plate is provided with four second positioning holes on one side, the lower die plate is fixedly connected with a lower mold on one side, and the inner bottom of the lower mold is provided with a gate cup bottom hole.
[0010] Further description of the above technical scheme:
[0011] The inner bottom of the lower mold is provided with two cross gates, and each cross gate is in communication with the gate cup bottom hole.
[0012] Further description of the above technical scheme:
[0013] The lower mold is fixedly connected with a plurality of chills on one side, and the lower mold plate is provided with a cold riser bottom hole on one side.
[0014] The utility model has the advantages of the following beneficial effects:
[0015] 1. Compared with the prior art, the casting tool for lightweight assembly is provided with a first cold riser, a first exhaust rod, a second exhaust rod and a third exhaust rod, the first cold riser, the first exhaust rod, the second exhaust rod and the third exhaust rod are away from the first sprue cup, and a plurality of chills are fixedly connected to the hot section of the casting, so that the casting tends to sequentially solidify during the cooling process, casting defects such as shrinkage cavity, shrinkage porosity, blowhole and cold shut are effectively reduced, the product scrap rate is reduced, and the product quality is improved.
[0016] 2. Compared with the prior art, the casting tool for lightweight assembly is provided with a sand core, the upper mold and the lower mold are butted, and then the casting liquid is poured into the inside from the first sprue cup, the sand core is used for assisting mold separation, and the effective use area of the mold plate is expanded, so that the product process yield is improved. BRIEF DESCRIPTION OF DRAWINGS
[0017] Fig. 1 The utility model provides a kind of upper mold schematic view of lightweight assembly casting tool;
[0018] Fig. 2 The utility model provides a kind of lower mold schematic view of lightweight assembly casting tool;
[0019] Fig. 3 The utility model provides a kind of chill schematic view of lightweight assembly casting tool.
[0020] LEGEND:
[0021] 1, upper mold plate;2, upper mold;3, first hot riser;4, first sprue cup;5, second hot riser;6, sand core;7, first cold riser;8, first exhaust rod;9, second exhaust rod;10, third exhaust rod;11, lower mold plate;12, lower mold;13, sprue cup bottom hole;14, cross gate;15, chill;16, cold riser bottom hole. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0023] Reference Figs. 1 to 3 The utility model provides a kind of lightweight assembly casting tool provided in the utility model: including upper mould plate 1 and lower mould plate 11, four second positioning holes are set in the side of lower mould plate 11, the side of lower mould plate 11 is fixedly connected with lower mould 12, the inner bottom of lower mould 12 is provided with gate cup bottom socket 13, the inner bottom of lower mould 12 is provided with two cross sprues 14, every cross sprue 14 is penetrated with gate cup bottom socket 13, the side of lower mould 12 is fixedly connected with multiple chills 15, multiple chills 15 are cylindrical, set in thick-walled boss position, the side of lower mould plate 11 is provided with cold riser bottom socket 16, the side of upper mould plate 1 is provided with four first positioning holes, when upper mould 2 and lower mould 12 are docked, overlap by four first positioning holes and four second positioning holes, can effectively reduce assembly error, the side of upper mould plate 1 is fixedly connected with upper mould 2, the side of upper mould 2 is provided with first hot riser 3 and second hot riser 5;
[0024] To realize the purpose of expanding the use area of mold plate, sand core 6 is movably arranged in upper mould 2, upper mould 2 and lower mould 12 are docked, then casting liquid is poured into the inside from first gate cup 4, the effective use area of mold plate is expanded by the aid of sand core 6, which is beneficial to improve product process yield;
[0025] To realize the purpose of improving product quality, first cold riser 7 is arranged on the side of upper mould 2, first gate cup 4 is fixedly connected to the side of upper mould 2, first exhaust rod 8, second exhaust rod 9 and third exhaust rod 10 are fixedly connected to the side of upper mould 2, first exhaust rod 8, second exhaust rod 9 and third exhaust rod 10 are away from the side of first gate cup 4, first cold riser 7, first exhaust rod 8, second exhaust rod 9 and third exhaust rod 10 are away from first gate cup 4, and multiple chills 15 are fixedly connected to the hot spot of the casting, so that the casting tends to solidify in sequence during the cooling process, which can effectively reduce casting defects such as shrinkage, porosity and cold shut, is beneficial to reduce product scrap rate and improve product quality.
[0026] Working principle: upper mould 2 and lower mould 12 are docked, then casting liquid is poured into the inside from first gate cup 4, the effective use area of mold plate is expanded by the aid of sand core 6, which is beneficial to improve product process yield, first cold riser 7, first exhaust rod 8, second exhaust rod 9 and third exhaust rod 10 are away from first gate cup 4, and multiple chills 15 are fixedly connected to the hot spot of the casting, so that the casting tends to solidify in sequence during the cooling process, which can effectively reduce casting defects such as shrinkage, porosity and cold shut, is beneficial to reduce product scrap rate and improve product quality.
[0027] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.
Claims
1. A lightweight assembly casting tooling comprising an upper mold plate (1) and a lower mold plate (11), characterized in that: The side of the upper mold plate (1) is provided with four first positioning holes, and the side of the upper mold plate (1) is fixedly connected with an upper mold (2); the side of the upper mold (2) is provided with a first hot sprue (3) and a second hot sprue (5), and the inside of the upper mold (2) movably is provided with a sand core (6); the side of the upper mold (2) is provided with a first cold sprue (7), and the side of the upper mold (2) is fixedly connected with a first runner cup (4); the side of the upper mold (2) is fixedly connected with a first exhaust rod (8), a second exhaust rod (9) and a third exhaust rod (10), and the side, away from the first runner cup (4), of the first exhaust rod (8), the second exhaust rod (9) and the third exhaust rod (10) is away from the first runner cup (4); the side of the lower mold plate (11) is provided with four second positioning holes, and the side of the lower mold plate (11) is fixedly connected with a lower mold (12); the inner bottom of the lower mold (12) is provided with a runner cup bottom nest (13); the inner bottom of the lower mold (12) is provided with two cross runners (14), and each cross runner (14) is in communication with the runner cup bottom nest (13); the side of the lower mold (12) is fixedly connected with a plurality of chills (15), and the side of the lower mold plate (11) is provided with a cold sprue bottom nest (16).