Mixing and casting tool for lorry oil cylinder lower support products

Abstract

The utility model discloses a mixed cloth casting tool for lorry oil cylinder lower support products. The mixed cloth casting tool comprises an upper shaping plate, a lower shaping plate, a casting model, a pouring cup, a second bottom nest, a cross gate, a dead head, a second bottom nest, an exhaust rod, an exhaust sheet, a vertical parting movable half core box, a vertical parting fixed half core box, a sand core model and a sand shooting opening. According to the utility model, various oil cylinder lower support products with different specifications are integrated in the same casting tool system, so that the frequency of die replacement operation is effectively reduced through the modular design, and the labor intensity of operators is obviously reduced. And meanwhile, the utilization rate of production line equipment is greatly improved, and the continuous production process requirement of series products is effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of casting technology, and in particular to a mixed fabric casting tooling for heavy-duty truck cylinder lower support products. Background Technology

[0002] In recent years, with the rapid increase in the development frequency of new heavy-duty truck models, the market demand for various specifications and types of hydraulic cylinder lower support components has also been growing. This significantly increases the investment in casting tooling development for automotive parts companies that primarily rely on ordinary sand casting. Furthermore, when a particular vehicle model is discontinued, the lifespan of its corresponding component casting tooling may also end. The more tooling and molds a company invests in, the greater the cost pressure it faces. To adapt to the rapid upgrading of hydraulic cylinder lower support components and meet customer procurement needs, it is indeed necessary to provide a new type of casting tooling for heavy-duty truck hydraulic cylinder lower support products. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a mixed fabric casting fixture for heavy-duty truck cylinder lower support products.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a mixed-layout casting fixture for heavy-duty truck cylinder lower support products, characterized in that: it includes an upper mold plate, a lower mold plate, a pouring cup, multiple sets of transverse runners, multiple sets of risers, multiple sets of venting rods, and multiple sets of venting plates; characterized in that: the upper mold plate and the lower mold plate are arranged vertically opposite each other; the pouring cup is located on the upper mold plate wall at the center position under top view; multiple casting models for different specifications of cylinder lower support products are mixed and arranged between the upper mold plate and the lower mold plate; the multiple sets of risers are connected to the transverse runners by overlapping; the lower mold plate wall is provided with a first recess and a second recess; the first recess and the second recess on the lower mold plate are connected by overlapping transverse runners; a filter mechanism is provided at the opening of the first recess; the multiple sets of venting rods are distributed at intervals around the casting model and in the non-forming area; the multiple sets of venting plates are connected to a set of venting rods in pairs.

[0005] As a further description of the above technical solution:

[0006] Multiple sets of the casting models are arranged in a matrix mixed distribution between the upper and lower mold plates.

[0007] As a further description of the above technical solution:

[0008] The two furthest sets of risers in the multiple sets are equipped with overflow structures on opposite sides.

[0009] As a further description of the above technical solution:

[0010] The filtration mechanism is a ceramic filter screen, whose mesh density decreases gradually along the casting flow direction.

[0011] As a further description of the above technical solution:

[0012] The exhaust vent is 2mm thick and the distance between it and the casting model is 3mm-5mm.

[0013] This utility model has the following beneficial effects:

[0014] Compared with existing technologies, this hybrid casting fixture for lower cylinder supports in heavy-duty trucks integrates various specifications of lower cylinder supports into a single casting fixture system. Its modular design effectively reduces the frequency of mold changes and significantly lowers the labor intensity of operators. It also greatly improves the utilization rate of production line equipment and effectively ensures the continuous production process requirements of the product series. Attached Figure Description

[0015] Figure 1 This is a front view of the upper mold plate portion of a mixed fabric casting tooling for a type of lower support for a heavy-duty truck cylinder, as proposed in this utility model.

[0016] Figure 2 This is a bottom view of the upper mold plate portion of a mixed fabric casting tooling for a type of lower support for a heavy-duty truck cylinder, as proposed in this utility model.

[0017] Figure 3 This is a front view of the lower mold plate portion of a mixed fabric casting tooling for a type of lower support for a heavy-duty truck cylinder, as proposed in this utility model.

[0018] Figure 4 This is a top view of the lower mold plate portion of a mixed fabric casting tool for a type of lower support for a heavy-duty truck cylinder, as proposed in this utility model.

[0019] Figure 5 This is a partial schematic diagram of the pouring cup, horizontal runner, riser, and the connection structure of the first and second bottom recesses of a mixed fabric casting tooling for a type of lower support for a heavy-duty truck cylinder, as proposed in this utility model.

[0020] Figure 6 This utility model presents a partial cross-sectional view of the connection structure between the exhaust rod and the exhaust plate of a mixed fabric casting tooling for a type of support for a heavy-duty truck cylinder.

[0021] Legend:

[0022] 1. Upper mold plate; 2. Lower mold plate; 3. Casting model; 4. Pour cup; 5. First bottom socket; 6. Riser; 7. Second bottom socket; 8. Streamline; 9. Vent rod; 10. Vent plate; 11. Overflow structure; 12. Filtering mechanism. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figures 1 to 6 This utility model provides a mixed-layout casting fixture for heavy-duty truck cylinder lower support products: it includes an upper mold plate 1, a lower mold plate 2, a pouring cup 4, multiple sets of horizontal runners 8, multiple sets of risers 6, multiple sets of venting rods 9, and multiple sets of venting plates 10. The upper mold plate 1 and the lower mold plate 2 are arranged vertically opposite each other. The pouring cup 4 is located on the upper wall of the upper mold plate 1 at the center position under the top view projection. Multiple casting models 3 for different specifications of cylinder lower support products are mixed and arranged between the upper mold plate 1 and the lower mold plate 2. The multiple sets of casting models 3 are arranged in a matrix mixed arrangement between the upper mold plate 1 and the lower mold plate 2. By mixing and arranging the casting models 3 of different specifications of cylinder lower support products between the same set of upper mold plate 1 and lower mold plate 2, the purpose of mass production of multiple specifications of heavy-duty truck cylinder lower support products can be achieved at the same time while ensuring product quality and performance, so as to meet the growing market demand.

[0025] Multiple sets of risers 6 are connected to the horizontal sprue 8 by overlapping. The two sets of risers 6 at the farthest ends of the multiple sets of risers 6 are provided with overflow structures 11 on opposite sides. The overflow structures 11 can collect various oxide inclusions, sand, slag and other impurities generated by the impact when the molten iron initially flows into the mold cavity, and achieve the function of secondary filtration of molten iron. This design can effectively reduce sand and slag hole defects in castings and improve the surface quality of products.

[0026] The upper wall of the lower mold plate 2 is provided with a first recess 5 and a second recess 7. The first recess 5 and the second recess 7 on the lower mold plate 2 are connected by a horizontal sprue 8. A filter mechanism 12 is provided at the connection between the first recess 5 and the horizontal sprue 8. The filter mechanism 12 is a ceramic filter screen. Its mesh density gradually decreases along the casting flow direction. When the molten iron enters from the pouring cup 4, impurities are first filtered through the ceramic filter screen to ensure that the molten iron flowing into the mold cavity is pure and slag-free.

[0027] Multiple sets of venting rods 9 are spaced out and arranged around the casting mold 3 and in the non-forming area. Multiple sets of venting plates 10 are connected to a set of venting rods 9 in pairs. The thickness of the venting plates 10 is 2mm, and the distance between them and the casting mold 3 is 3mm-5mm. When molten iron enters the mold cavity, because the venting plates 10 are only 2mm thick and are not connected to the casting mold 3, and the venting rods 9 are not connected to the casting mold 3, the molten iron cannot enter the venting rods 9. However, the generated gas can be discharged from the mold cavity in a timely and effective manner through the venting rods 9, thereby reducing the porosity defects of the casting.

[0028] Working principle: By arranging the casting models 3 of different specifications of hydraulic cylinder lower support products together between the same set of upper mold plate 1 and lower mold plate 2, it is possible to simultaneously mass-produce various specifications of hydraulic cylinder lower support products for heavy-duty trucks while ensuring product quality and performance, thus meeting the growing market demand. The overflow structure 11 can collect various oxide inclusions, sand, slag and other impurities generated by the impact when molten iron initially flows into the mold cavity, achieving the function of secondary filtration of molten iron. This design can effectively reduce sand and slag defects in castings and improve the surface quality of products. The filtration mechanism 12 is a ceramic filter screen, whose mesh density gradually decreases along the casting flow direction. When molten iron enters from the pouring cup 4, impurities are first filtered through the ceramic filter screen to ensure that the molten iron flowing into the mold cavity is pure and slag-free. When molten iron enters the mold cavity, because the exhaust plate 10 is only 2mm thick and is not connected to the casting model 3, and the exhaust rod 9 is also not connected to the casting model 3, the molten iron cannot enter the exhaust rod 9, but the generated gas can be discharged from the mold cavity in a timely and effective manner through the exhaust rod 9, thereby reducing the porosity defects of the casting.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mixed-fabric casting tooling for lower support bearings of heavy-duty truck cylinders, characterized in that: The casting includes an upper mold plate (1), a lower mold plate (2), a pouring cup (4), multiple sets of horizontal runners (8), multiple sets of risers (6), multiple sets of venting rods (9), and multiple sets of venting plates (10). Its features include: the upper mold plate (1) and the lower mold plate (2) are arranged vertically opposite each other; the pouring cup (4) is located on the upper wall of the upper mold plate (1) at a central position in the top view; multiple casting models (3) for different specifications of hydraulic cylinder lower support products are interspersed between the upper mold plate (1) and the lower mold plate (2); and the multiple sets of risers (6) are connected to the upper mold plate (1). The lower mold plate (2) is connected to the horizontal runner (8) by an overlapping method. The upper wall of the lower mold plate (2) is provided with a first bottom cavity (5) and a second bottom cavity (7). The first bottom cavity (5) and the second bottom cavity (7) on the lower mold plate (2) are connected by an overlapping method through the horizontal runner (8). A filter mechanism (12) is provided at the connection between the first bottom cavity (5) and the horizontal runner (8). Multiple sets of exhaust rods (9) are arranged at intervals around the casting model (3) and in the non-forming area. Multiple sets of exhaust plates (10) are connected to a set of exhaust rods (9) in pairs.

2. The mixed-fabric casting fixture for a type of lower support for a heavy-duty truck cylinder as described in claim 1, characterized in that: Multiple sets of the casting models (3) are arranged in a matrix mixed distribution between the upper mold plate (1) and the lower mold plate (2).

3. The mixed-fabric casting fixture for the lower support of a heavy-duty truck cylinder as described in claim 1, characterized in that: The two furthest sets of risers (6) in the multiple sets of risers (6) are provided with overflow structures (11) on opposite sides.

4. A mixed-fabric casting fixture for a type of lower support for a heavy-duty truck cylinder, as described in claim 1, characterized in that: The filtration mechanism (12) is a ceramic filter screen, and its mesh density decreases step by step along the casting flow direction.

5. A mixed-fabric casting fixture for a type of lower support for a heavy-duty truck cylinder, as described in claim 1, characterized in that: The exhaust vent (10) is 2mm thick and the distance between it and the casting model (3) is 3mm-5mm.

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