Casting mold for engine oil collecting tank of heavy truck

Abstract

The utility model provides a heavy truck engine oil collecting tank casting mold, which belongs to the field of molds and comprises an outer mold core, a second cover plate and a shunting bag, a first cover plate is arranged at the lower end of the outer mold core, an inner mold core is arranged between the outer mold core and the first cover plate, and a cavity is formed between the inner mold core and the outer mold core. At least four first through holes are formed in the second cover plate, second through holes coaxial with the first through holes are formed in the first cover plate, a pouring gate used for being connected with casting equipment is formed in the lower end of the flow dividing bag, and a cavity is formed between the second cover plate and the flow dividing bag. And the pouring gate, the cavity, the first through hole and the second through hole are communicated to form a channel for circulating casting raw materials, and the channel is communicated with the cavity. By means of at least four-point liquid feeding, flowing uniformity of casting raw materials in the cavity is improved, flowing resistance is reduced, and casting defects of the oil collecting tank are avoided. And the sealing performance is good, and the casting quality is prevented from being influenced by casting raw materials leaking from the cavity.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mould technical field, concretely relates to a heavy truck engine oil collecting tank casting mould. BACKGROUND

[0002] Heavy truck plays a key role in the field of modern logistics, construction, mining and so on, and its engine as the core power source is developing towards higher power, better fuel economy and stronger reliability. The engine oil collecting tank as the key component to ensure the normal lubrication and heat dissipation of the engine, its quality and performance directly affect the overall operation efficiency and service life of the engine. With the continuous upgrading of heavy truck engine technology, higher requirements are put forward for the volume, structural complexity and performance stability of the oil collecting tank.

[0003] Compared with small trucks, cars and other transport tools, the volume of the oil collecting tank required by the heavy truck is very large. Such a large-volume oil collecting tank is prone to defects during casting, for example, when the forging raw material (such as liquid metal) flows into the complex cavity of the mould, due to the long flow distance and large resistance, turbulence phenomenon is easy to occur, which leads to the gas being entrained in the forging raw material, and then forming gas hole defects inside the casting. These gas holes not only weaken the strength of the oil tank, but also may become potential leakage channels, affecting the sealing performance and use performance of the oil tank. Therefore, a mould suitable for the casting of the heavy truck engine oil collecting tank is designed, so that the forging liquid flows uniformly in the cavity during the casting process and the resistance is small, avoiding casting defects and greatly improving the quality of the heavy truck engine oil collecting tank. SUMMARY

[0004] The utility model aims at overcoming the shortcomings and deficiencies in the prior art and provides a heavy truck engine oil collecting tank casting mould.

[0005] The technical scheme adopted by the utility model is as follows: a heavy truck engine oil collecting tank casting mould, comprising an outer mould core, a first cover plate is arranged at the lower end of the outer mould core, an inner mould core is arranged between the outer mould core and the first cover plate, a cavity is formed between the inner mould core and the outer mould core, a second cover plate and a flow dividing bag are further included, at least four first through holes are arranged on the second cover plate, and a second through hole coaxial with the first through hole is arranged on the first cover plate, the lower end of the flow dividing bag abuts against the second cover plate and is provided with a sprue for connecting with a casting equipment, a cavity is formed between the second cover plate and the flow dividing bag, the sprue, the cavity, the first through hole and the second through hole are communicated to form a channel for circulating the casting raw material, and the channel is communicated with the cavity.

[0006] The first through hole is provided with four first through holes, and the first through holes are evenly arranged at the four corners of the second cover plate.

[0007] The shunt package gradually decreases in outer diameter along a direction away from the second cover plate.

[0008] The shunt package has an arc-shaped or planar peripheral sidewall.

[0009] The shunt package is uniformly and spacedly provided with a first mounting plate on the outer periphery, the first mounting plate is provided with a first mounting hole, the second cover plate is provided with a second mounting plate corresponding to the first mounting plate, and the second mounting plate is provided with a second mounting hole coaxial with the first mounting hole.

[0010] The heavy truck engine oil collecting tank casting mold further comprises a heat preservation sleeve, one end of the heat preservation sleeve is arranged in the first through hole and the other end is arranged in the second through hole, and the heat preservation sleeve is provided with a third through hole coaxially arranged with the first through hole and the second through hole.

[0011] The first cover plate is circumferentially provided with a plurality of sealing protrusions, and the outer mold core is provided with sealing grooves in sealing cooperation with the sealing protrusions.

[0012] The plurality of sealing protrusions comprise annular protrusions and strip-shaped protrusions, the annular protrusions correspond in shape to the outer periphery of the first cover plate, the strip-shaped protrusions are arranged on the first cover plate corresponding to the second through hole, and the strip-shaped protrusions are arranged inside the annular protrusions.

[0013] The inner bottom surface of the outer mold core is provided with a plurality of protrusions distributed in a grid shape.

[0014] The inner mold core is provided with a plurality of grooves, and the grooves are not communicated with the cavity.

[0015] The beneficial effects of the utility model are as follows:

[0016] 1. The mold of the utility model improves the flow uniformity of the casting raw material in the cavity by at least four-point liquid inlet mode, reduces the flow resistance, and avoids casting defects of the oil collecting tank.

[0017] 2. The mold of the utility model has good sealing performance, avoids leakage of the casting raw material from the cavity, and affects the casting quality.

[0018] 3. The mold of the utility model has a grid at the bottom of the outer mold core, improves the qualified rate and use performance of the oil collecting tank. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings obtained according to these drawings without creative labor still belong to the scope of the utility model.

[0020] Figure 1 This is an exploded view of the present invention;

[0021] Figure 2 This is a schematic diagram of the second cover plate of this utility model;

[0022] Figure 3 This is a schematic diagram of the first cover plate of this utility model;

[0023] Figure 4 This is a schematic diagram of the diversion package of this utility model;

[0024] Figure 5 This is a schematic diagram of the outer mold core of this utility model;

[0025] Figure 6 This is a schematic diagram of the inner mold core of this utility model;

[0026] Figure 7 This is a schematic diagram of the present invention;

[0027] Figure 8 This is a schematic diagram of the second outer shell of the present invention;

[0028] Figure 9 This is a schematic diagram of the top plate of this utility model;

[0029] Figure 10 This is a schematic diagram of the oil collection tank of this utility model. Detailed Implementation

[0030] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0031] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0032] The directional and positional terms used in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0033] Example 1:

[0034] like Figures 1 to 10 The image shown is one embodiment of this utility model:

[0035] The application discloses a heavy truck engine oil collecting tank casting mold which comprises a first shell 10, a second shell 20, a bottom plate 30, a top plate 40 and a fixing block 90. The first shell 10 and the second shell 20 abut against each other, the top plate 40 is arranged above the second shell 20, an outer mold core 1 is arranged in the second shell 20, a first cover plate 2 is arranged at the lower end of the outer mold core 1, an inner mold core 3 is arranged between the outer mold core 1 and the first cover plate 2, and a molding cavity is formed between the inner mold core 3 and the outer mold core 1. The bottom plate 30 is connected to the lower end surface of the first shell 10, and the fixing block 90 is symmetrically arranged on both sides of the top plate 40 and connected with the second shell 20.

[0036] Specifically, the mold is further provided with a connecting block 50, one end of the connecting block 50 is connected with the side wall of the first shell 10 and the other end is connected with the side wall of the second shell 20, so that the first shell 10 and the second shell 20 are connected. In addition, the mold is further provided with a ejector pin 60, a reset rod 70 and a guide column 80, the top plate 40 is provided with a fourth through hole, a fifth through hole and a sixth through hole which are matched with the ejector pin 60, the reset rod 70 and the guide column 80 respectively, the number of the ejector pin 60 is generally reasonably arranged according to the product size, one end of the guide column 80 is sleeved with a protective sleeve, and the protective sleeve is arranged in the sixth through hole, so that the guide column 80 is protected from being abraded. The second shell 20 is respectively provided with a seventh through hole, an eighth through hole and a ninth through hole which are matched with the ejector pin 60, the reset rod 70 and the guide column 80. The outer mold core 1 is respectively provided with a tenth through hole 13 and an eleventh through hole 14 which are matched with the ejector pin 60 and the reset rod 70.

[0037] The ejector pin 60 sequentially passes through the fourth through hole, the seventh through hole and the tenth through hole 13, and is used for ejecting the product from the mold, so as to facilitate demolding; the reset rod 70 sequentially passes through the fifth through hole, the eighth through hole and the eleventh through hole 14, and can guarantee that the mold ejecting mechanism returns to the original position when the mold is closed; and the other end of the guide column 80 sequentially passes through the sixth through hole and the ninth through hole, so as to guarantee that the mold ejecting mechanism moves up and down stably.

[0038] In order to enable the mold to cast the oil collecting tank suitable for heavy truck, the second cover plate 4 and the flow distribution package 5 are further arranged below the first cover plate 2 in the first shell 10. The first mounting plate 52 is uniformly arranged on the outer periphery of the flow distribution package 5. The first mounting hole 521 is arranged on the first mounting plate 52. The second mounting plate 42 is arranged on the second cover plate 4 corresponding to the first mounting plate 52. The second mounting hole 421 coaxial with the first mounting hole 521 is arranged on the second mounting plate 42. At least four first through holes 41 are arranged on the second cover plate 4. The second through hole 21 coaxial with the first through hole 41 is arranged on the first cover plate 2. The lower end of the flow distribution package 5 abuts against the second cover plate 4. The pouring gate 51 for connecting with the casting equipment is arranged on the lower end of the flow distribution package 5. The cavity is formed between the second cover plate 4 and the flow distribution package 5. The pouring gate 51, the cavity, the first through hole 41 and the second through hole 21 are communicated to form the channel for flowing the casting raw material. The channel is communicated with the mold cavity. Specifically, in the embodiment, the four first through holes 41 are uniformly arranged on the four corners of the second cover plate 4. When the oil collecting tank is cast, the casting raw material is pressed into the pouring gate 51, flows into the mold cavity along the cavity, the first through hole 41 and the second through hole 21, and then the processes such as pressure maintaining, cooling and solidification are carried out. Finally, the required oil collecting tank 7 can be formed. The casting raw material flows into the pouring gate 51, flows into the mold cavity along the four first through holes 41 through the flow distribution package 5. The uniformity of the casting raw material flowing in the mold cavity is improved. The resistance is small. The quality of the cast oil collecting tank is greatly improved. The casting defects are avoided. The casting raw material can be selected as the metal liquid such as iron, aluminum and copper or the alloy liquid such as carbon steel, zinc alloy, magnesium alloy or the casting material such as polypropylene commonly used in the field. The casting equipment generally refers to the pressure casting machine.

[0039] Specifically, the outer diameter of the flow distribution package 5 gradually decreases in the direction away from the second cover plate 4. The side wall of the flow distribution package 5 is arc or plane. In the embodiment, the flow distribution package 5 is the cone with the outer diameter gradually decreasing from top to bottom and the arc side wall. After the casting is completed, the shape of the flow distribution package 5 can help the remaining raw material to flow down smoothly and finally flow back into the furnace of the casting equipment.

[0040] In order to improve the quality of the cast oil collecting tank, the mold is further provided with the heat preservation sleeve 6. One end of the heat preservation sleeve 6 is arranged in the first through hole 41 and the other end is arranged in the second through hole 21. The third through hole coaxial with the first through hole 41 and the second through hole 21 is arranged on the heat preservation sleeve 6.

[0041] The first cover plate 2 is provided with a plurality of sealing protrusions 22 in the circumferential direction, and the outer mold core 1 is provided with sealing grooves 11 in sealing cooperation with the sealing protrusions 22, so as to avoid overflow of the casting raw material and affect the molding effect. Specifically, the plurality of sealing protrusions 22 include annular protrusions 221 and strip-shaped protrusions 222. The annular protrusions 221 correspond to the shape of the outer periphery of the first cover plate 2. The strip-shaped protrusions 222 are arranged on the first cover plate 2 corresponding to the second through holes 21, and are arranged inside the annular protrusions 221.

[0042] The inner bottom surface of the outer mold core 1 is provided with a plurality of protrusions 12 distributed in a grid shape, so as to form a grid on the bottom surface of the oil collecting tank 7 and improve the qualified rate and use performance of the oil collecting tank product. Specifically, in the embodiment, the planar size of the plurality of protrusions 12 is 15mm*15mm, and the height is 1mm. The grid is formed on the bottom surface of the oil collecting tank, and the main effects are as follows: first, the grid has the effects of drainage and pressure dissipation in the casting process, so as to avoid the casting defects of pores in the product; second, the grid improves the local strength of the oil collecting tank; and third, the grid can increase the surface area, so as to increase the heat dissipation surface and improve the heat dissipation efficiency.

[0043] In addition, in order to save the manufacturing cost of the mold, the inner mold core 3 is provided with a plurality of grooves 31, and the grooves 31 are not communicated with the mold cavity.

[0044] The above disclosure is only the preferred embodiment of the utility model, and of course cannot limit the scope of the utility model, so the equivalent changes made according to the utility model claims still belong to the scope covered by the utility model.

Claims

1. A heavy truck engine oil collecting tank casting mold, comprising an outer mold core (1), a first cover plate (2) is arranged at the lower end of the outer mold core (1), an inner mold core (3) is arranged between the outer mold core (1) and the first cover plate (2), and a cavity is formed between the inner mold core (3) and the outer mold core (1), characterized in that, The second cover plate (4) is provided with at least four first through holes (41), and the first cover plate (2) is provided with second through holes (21) coaxial with the first through holes (41); the shunt package (5) is abutted to the second cover plate (4) at the upper end and is provided with a pouring gate (51) connected with the casting equipment at the lower end; and the second cover plate (4) and the shunt package (5) form a cavity therebetween, the pouring gate (51), the cavity, the first through holes (41) and the second through holes (21) are communicated to form a channel for circulating casting raw materials, and the channel is communicated with the cavity.

2. A heavy duty truck engine oil collection tank casting mold according to claim 1, wherein, The first through holes (41) are four in number and are uniformly arranged at the four corners of the second cover plate (4).

3. A heavy duty truck engine oil collection tank casting mold according to claim 1, wherein, The shunt package (5) gradually decreases in outer diameter along the direction away from the second cover plate (4).

4. A heavy duty truck engine oil collection tank casting mold according to claim 3, wherein, The side wall of the shunt package (5) is arc-shaped or planar.

5. A heavy duty truck engine oil collection tank casting mold according to claim 1, wherein, The shunt package (5) is uniformly and spacedly provided with first mounting plates (52) around the periphery, the first mounting plates (52) are provided with first mounting holes (521), and the second cover plate (4) is provided with second mounting plates (42) corresponding to the first mounting plates (52), and the second mounting plates (42) are provided with second mounting holes (421) coaxial with the first mounting holes (521).

6. A heavy truck engine oil collection tank casting mold according to claim 1, wherein, The heat preservation sleeve (6) is arranged in the first through hole (41) at one end and in the second through hole (21) at the other end, and is provided with a third through hole coaxial with the first through hole (41) and the second through hole (21).

7. A heavy duty truck engine oil collection tank casting mold as defined in claim 1 wherein, The first cover plate (2) is provided with a plurality of sealing protrusions (22) arranged in the circumferential direction, and the outer mold core (1) is provided with sealing grooves (11) sealingly matched with the sealing protrusions (22).

8. A heavy duty truck engine oil collection tank casting mold as defined in claim 7, wherein, The plurality of sealing protrusions (22) include annular protrusions (221) and strip-shaped protrusions (222), the annular protrusions (221) correspond in shape to the outer periphery of the first cover plate (2), the strip-shaped protrusions (222) are arranged on the first cover plate (2) corresponding to the second through holes (21), and the strip-shaped protrusions (222) are arranged inside the annular protrusions (221).

9. A heavy duty truck engine oil collection tank casting mold as defined in claim 1 wherein, The inner bottom surface of the outer mold core (1) is provided with a plurality of protrusions (12) distributed in a grid shape.

10. A heavy duty truck engine oil collection tank casting mold according to claim 1, wherein, The inner mold core (3) is provided with a plurality of grooves (31) not communicated with the cavity.

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