New energy automobile inverter shell casting mold capable of optimizing exhaust

Abstract

The utility model discloses a new energy automobile inverter shell casting mould for optimizing exhaust, which comprises an upper mould, a lower mould, a sand core and an air suction copper pipe, the upper mould and the lower mould are mutually connected up and down, the sand core is arranged inside the lower mould, one end of the air suction copper pipe is arranged at a sand core recess inside the sand core, and the other end of the air suction copper pipe is connected with the air suction copper pipe. And the other end is fixedly connected to the outer side edge of the lower die for connecting a vacuum pump. Compared with the prior art, gas generated in the casting process of the sand core is actively pumped out in a special gas pumping mode, the original mode that the gas is passively emitted is replaced, the gas exhausting effect is greatly improved, and the rate that castings are scrapped due to the gas is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicle casting, in particular to a casting mold for an inverter housing of a new energy vehicle with optimized exhaust. Background Art

[0002] A new energy vehicle is a vehicle that uses a storage battery as an energy storage power source. It uses the storage battery as an energy storage power source, provides electrical energy from the battery to the motor, drives the motor to operate, and thus propels the vehicle to travel. As a core component on a new energy vehicle, the inverter installed on the new energy vehicle is a device that can convert the direct current stored in the storage battery into alternating current through an inverter circuit and provide it for the motor to use for driving the vehicle to travel.

[0003] A sand core is a material used to manufacture a core in casting production, generally composed of molding materials such as foundry sand, resin, curing agent, and additives mixed in a certain proportion. During the casting production process, the binder and organic matter in the sand core will burn and release gases, and the residual moisture in the sand core will evaporate when heated. If these gases cannot be discharged in time, it will cause pores in the casting and result in the scrapping of the casting. During the existing casting production process of the inverter housing, a sand core also needs to be set on the inner side of the housing, and the sand core is a solid structure and cannot be emptied. The sand core is completely wrapped in the lower mold by the casting, and it is relatively difficult for the sand core to exhaust. The traditional exhaust structure cannot solve the problem of large gas evolution of the sand core, resulting in defects such as air entrapment and insufficient pouring during the production process of the casting, affecting the production quality of the inverter housing. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a casting mold for an inverter housing of a new energy vehicle with optimized exhaust in view of the defects of the prior art.

[0005] To solve the above technical problems, the utility model provides the following technical solutions:

[0006] A casting mold for an inverter housing of a new energy vehicle with optimized exhaust, including an upper mold, a lower mold, and a sand core, characterized in that: it further includes a suction copper pipe. The upper mold and the lower mold are connected up and down to each other. The sand core is arranged inside the lower mold. One end of the suction copper pipe is arranged inside the sand core, and the other end is fixedly connected to the outer edge of the lower mold for connecting a vacuum pump.

[0007] Further, a sand core depression is arranged at the bottom of the sand core. The sand core depression is an area sunken into the sand core, and the inner end of the suction copper pipe is arranged in the sand core depression.

[0008] Further, the inner end of the suction copper pipe is connected to the sand core depression through a fixing block.

[0009] Further, a wire groove is provided on the bottom surface of the lower mold, and the suction copper tube extends from the inside of the core along the wire groove to the outer edge of the lower mold.

[0010] Further, a core-pulling device is provided on the side surface of the lower mold.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: 1. By arranging a suction copper tube inside the lower mold and connecting the inside of the core and outside the mold respectively, it replaces the form that the core exhaust can only be dissipated passively in the prior art, greatly improving the exhaust effect and effectively reducing the ratio of casting rejection caused by defects such as air entrapment and insufficient pouring. 2. A core recessed area that is recessed inward is provided on the core, which can effectively collect the gas generated inside the core in this area and improve the exhaust efficiency of the suction copper tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model;

[0013] Figure 2 It is a schematic diagram of the bottom structure of the lower mold in the embodiment;

[0014] Figure 3 It is a schematic diagram of the internal core area of the lower mold in the embodiment;

[0015] Figure 4 It is a schematic diagram of the core structure in the embodiment;

[0016] Wherein: 1-upper mold, 2-lower mold, 3-core, 4-suction copper tube, 5-core recess, 6-fixed block, 7-wire groove, 8-core-pulling device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] In order to deepen the understanding of the present utility model, the following will further describe the present utility model in detail in conjunction with the drawings. This embodiment is only used to explain the present utility model and does not limit the protection scope of the present utility model.

[0018] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

[0019] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation", "arrangement", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and may also be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0020] Figures 1-4 A specific embodiment of a casting mold for an inverter housing of a new energy vehicle with optimized exhaust is shown, which includes an upper mold 1, a lower mold 2, a sand core 3, and a suction copper pipe 4. The upper mold 1 and the lower mold 2 are connected up and down to each other. The sand core 3 is arranged inside the lower mold 2. One end of the suction copper pipe 4 is arranged inside the sand core 3, and the other end is fixedly connected to the outer edge of the lower mold 2 for connecting to a vacuum pump.

[0021] A sand core depression 5 is arranged at the bottom of the sand core 3. The sand core depression 5 is an area that depresses towards the inside of the sand core 3. The inner end of the suction copper pipe 4 is arranged in the sand core depression 5. The inner end of the suction copper pipe 4 is connected to the sand core depression 5 through a fixing block 6. A wire groove 7 is arranged on the bottom surface of the lower mold 2. The suction copper pipe 4 extends from inside the sand core 3 along the wire groove 7 to the outer edge of the lower mold 2. A plurality of core-pulling devices 8 are also arranged on the side surface of the lower mold 2.

[0022] When using the mold in the above embodiment, first open the upper mold 1 and the core-pulling device 8, and place the sand core 3 into the lower mold 2; then inlay the inner end head of the suction copper pipe 4 into the sand core depression 5 through the fixing block 6; then close the mold and start pouring, and at the same time turn on the vacuum pump connected to the suction copper pipe 4 for negative pressure air extraction. The gas volatilized from the sand core 3 will gradually gather in the sunken area of the sand core depression 5. Through the negative pressure suction copper pipe 4, the gas generated by the sand core 3 can be continuously sucked away from the sand core depression 5 more efficiently, reducing the product scrap caused by the gas evolution of the sand core 3.

[0023] The above specific implementation manners are only for explaining the technical concept and structural features of the present utility model, aiming to enable those related to this technology to implement it accordingly. However, the above content does not limit the protection scope of the present utility model. Any equivalent changes or modifications made according to the spirit and essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A casting mold for an inverter housing of a new energy vehicle with optimized exhaust, comprising an upper mold (1), a lower mold (2), and a sand core (3), characterized in that: It also includes an air suction copper tube (4), the upper mold (1) and the lower mold (2) are connected to each other up and down, the sand core (3) is arranged inside the lower mold (2), one end of the air suction copper tube (4) is arranged inside the sand core (3), and the other end is fixedly connected to the outer edge of the lower mold (2) for connecting to a vacuum pump.

2. According to the exhaust-optimized new energy vehicle inverter housing casting mold of claim 1, it is characterized by: A sand core depression (5) is provided at the bottom of the sand core (3), and the sand core depression (5) is a region sunken toward the inside of the sand core (3). The inner end of the air suction copper tube (4) is arranged in the sand core depression (5).

3. According to claim 2, a casting mold for a new energy vehicle inverter housing with optimized exhaust, characterized in that: The inner end of the air suction copper tube (4) is connected to the sand core recess (5) via a fixing block (6).

4. According to the exhaust-optimized new energy vehicle inverter housing casting mold of claim 1, it is characterized by: The bottom surface of the lower mold (2) is provided with a wire groove (7), and the air suction copper tube (4) extends from the inside of the sand core (3) along the wire groove (7) to the outer edge of the lower mold (2).

5. According to the exhaust-optimized new energy vehicle inverter housing casting mold of claim 1, it is characterized by: A core pulling device (8) is provided on the side of the lower mold (2).

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