Side riser device for aluminum alloy low-pressure casting of new energy machine shell

Abstract

The utility model discloses a side riser device for aluminum alloy low-pressure casting of a new energy machine shell. A side riser is arranged at the position, close to a side die parting surface, of a casting, a riser sleeve is detachably installed on the outer surface of a riser core, a heat insulation cover plate is movably hinged to an opening in the upper end of the riser sleeve, and a plurality of heating rods are fixedly installed at the position, close to the side riser, of the surface of the side die. The heating rod is arranged in the side die, the side riser can be heated, the solidification time of molten aluminum in the riser is effectively shortened, the riser sleeve which is convenient to mount and dismount is arranged to preserve heat of the side riser, the riser sleeve is convenient to replace after being damaged, the machining efficiency is improved, the riser sleeve can effectively reduce heat loss, and the service life of the riser sleeve is prolonged. The feeding effect on a casting is improved, the casting defect of the thick and large part in the middle of a product is effectively overcome, the casting defects of shrinkage cavities, shrinkage porosity and the like are reduced, the product yield is improved, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of casting mold technology, specifically a side riser device for low-pressure casting of aluminum alloy housings for new energy vehicles. Background Technology

[0002] In the production of aluminum alloy castings, a certain number and size of risers are generally required to replenish the molten metal needed during the solidification and shrinkage of the aluminum, preventing casting defects such as shrinkage porosity and ensuring castings with good internal quality. The number and size of the risers need to be determined based on the thickest hot spots in the product, and they are usually placed at the top of the casting. However, for some relatively thick hot spots located in the middle of the product, the feeding distance is relatively long, the feeding effect is still poor, and the product yield is low.

[0003] Currently, there are some induction heating risers and heat-insulating risers in use in China, mainly in industries such as steel casting. Induction heating risers use the principle of induction heating to heat the molten metal in the riser. Although this type of riser improves the feeding capacity of the riser, the feeding distance is still relatively far for thick and hot-formed areas in the middle of the product, resulting in poor feeding effect and failing to completely solve the casting defect problem of thick and hot-formed areas in the middle of the product.

[0004] An investigation revealed that a Chinese utility model patent, publication number CN 217315819U, discloses a low-pressure casting heat-insulating riser structure, comprising a mold core, a riser body, and a riser insert. The riser body is inserted into the mold core, and the riser insert is fastened onto the riser body. The riser insert is locked to the mold core, and the inner surface of the riser insert and the mold core are fitted with a clearance fit. By separating the riser body from the mold core through the riser insert, the heat loss of the riser body is reduced, thereby increasing its feeding effect on the casting.

[0005] However, the above-mentioned device can only perform simple heat preservation operation on the riser body, but cannot heat the riser body. Heat will continue to be lost, affecting the shrinkage compensation effect. In addition, the riser insert and the mold core are locked together. Therefore, when the riser insert is damaged, it cannot be quickly disassembled and replaced, affecting the processing efficiency.

[0006] Therefore, this utility model provides a side riser device for low-pressure casting of aluminum alloy housings for new energy vehicles to solve the above problems. Utility Model Content

[0007] This utility model provides a side riser device for low-pressure casting of aluminum alloy housings for new energy vehicles, aiming to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a side riser device for low-pressure casting of aluminum alloy housings for new energy vehicles, comprising a mold base plate, four side molds on the mold base plate, a cavity for casting forming between the four side molds, a side riser near the parting surface of the side mold of the casting, and a riser core for forming the side riser, the riser core being cylindrical, a riser sleeve being detachably installed on the outer surface of the riser core, the upper end of the riser sleeve being open, a heat insulation cover plate being movably hinged to the upper opening of the riser sleeve, and multiple heating rods being fixedly installed on the surface of the side molds near the side riser.

[0009] As a preferred technical solution of this application, a snap is provided on the side surface of the riser sleeve near the riser core, and the riser sleeve is snapped onto the outer surface of the riser core through the snap.

[0010] As a preferred technical solution of this application, the outer surface of the riser core is provided with a fitting surface that matches the shape of the riser sleeve. Both ends of the fitting surface are provided with sliding grooves, and the bottom of the sliding grooves is provided with slots. L-shaped clamping plates are fixedly installed on both sides of the slots of the riser sleeve, and the riser sleeve is engaged with the slots through the L-shaped clamping plates.

[0011] As a preferred technical solution of this application, the riser sleeve and the heat insulation cover are both made of asbestos or aluminum silicate.

[0012] As a preferred technical solution of this application, the length of the groove opening is greater than the width of the L-shaped card plate.

[0013] As a preferred technical solution of this application, two limiting ribs are fixedly installed side by side in the middle of the fitting surface, and a positioning block is fixedly installed on the inner side wall of the riser sleeve. When the riser sleeve is engaged with the slot by the L-shaped card plate, the positioning block is inserted between the two limiting ribs.

[0014] As a preferred technical solution of this application, the outer surface of the riser sleeve is provided with anti-slip grooves.

[0015] This invention heats the side riser by installing a heating rod inside the side mold, effectively reducing the solidification time of the molten aluminum inside the riser. The side riser is insulated by a riser sleeve that is easy to install and remove, and can be easily replaced if damaged, thus improving processing efficiency. This riser sleeve effectively reduces heat loss and increases its feeding effect on the casting, effectively solving casting defects in the thicker parts of the product, reducing the occurrence of casting defects such as shrinkage cavities and porosity, improving product yield, and reducing production costs. Attached Figure Description

[0016] Figure 1 A schematic diagram of a side riser device for low-pressure casting of aluminum alloy housing for new energy vehicles;

[0017] Figure 2 This is a cross-sectional view of the riser core;

[0018] Figure 3 A three-dimensional diagram of the top sleeve;

[0019] Figure 4 This is a cross-sectional view of the riser sleeve;

[0020] Figure 5 This is a structural diagram of the side mold.

[0021] In the picture:

[0022] 1. Mold base plate; 2. Side mold; 3. Casting; 4. Riser core; 41. Fitting surface; 42. Slide opening; 43. Slot; 44. Limiting rib; 5. Riser sleeve; 51. Heat insulation cover plate; 52. L-shaped retaining plate; 53. Anti-slip groove; 54. Positioning block; 55. Clamp; 6. Heating rod. 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] like Figure 1-5 As shown, this utility model provides a side riser device for low-pressure casting of aluminum alloy housings for new energy vehicles. It includes a mold base plate 1, four side molds 2 on the mold base plate 1, and cavities for forming a casting 3 formed between the four side molds 2. The casting 3 has a side riser near the parting surface of the side mold 2. It also includes a riser core 4 for forming the side riser. The riser core 4 can be installed on the upper mold. To easily show the position of the side riser, the upper mold is not shown in the figure. The riser core 4 is cylindrical, and its outer surface is detachably fitted with… The riser sleeve 5 has an open upper end, and a heat insulation cover plate 51 is movably hinged to the upper opening of the riser sleeve 5 to reduce the heat overflow from the upper end of the riser sleeve 5. Multiple heating rods 6 are fixedly installed on the surface of the side mold 2 near the side riser, specifically inserted into the side mold 2. The side mold 2 has through holes for inserting the heating rods 6 near the side riser. The heating rods 6 are temperature controlled by thermocouples. The heating rods 6 transfer heat to the mold side riser through electric heating. The thermocouples can be selectively installed on the side of the mold.

[0025] To facilitate the installation of the riser sleeve 5, in this embodiment, a snap 55 is provided on the side surface of the riser sleeve 5 near the riser core 4, and the riser sleeve 5 is snapped onto the outer surface of the riser core 4 through the snap 55.

[0026] Furthermore, to facilitate the disassembly of the riser sleeve 5 and to make it easier for staff to replace the riser sleeve 5 after it is damaged, in this embodiment, the outer surface of the riser core 4 is provided with a fitting surface 41 that matches the shape of the riser sleeve 5. Both ends of the fitting surface 41 are provided with sliding grooves 42, and the bottom of the sliding grooves 42 is provided with slots 43. L-shaped clamping plates 52 are fixedly installed on both sides of the clamping opening 55 of the riser sleeve 5. The riser sleeve 5 is engaged with the slots 43 through the L-shaped clamping plates 52. During operation, the riser sleeve 5 can be moved horizontally towards the fitting surface 41 so that the L-shaped clamping plates 52 are inserted into the sliding grooves 42. Then, the riser sleeve 5 is moved down so that the lower end of the L-shaped clamping plates 52 can be inserted into the slots 43, thereby preventing the riser sleeve 5 from easily detaching from the surface of the riser core 4.

[0027] In this embodiment, both the riser sleeve 5 and the heat insulation cover plate 51 are made of asbestos or aluminum silicate.

[0028] To facilitate the insertion of the L-shaped card plate 52, in this embodiment, the length of the groove opening 42 is greater than the width of the L-shaped card plate 52.

[0029] To further increase the stability of the riser sleeve 5 on the surface of the riser core 4, in this embodiment, two limiting ribs 44 are fixedly installed side by side in the middle of the fitting surface 41, and a positioning block 54 is fixedly installed on the inner side wall of the riser sleeve 5. When the riser sleeve 5 is engaged with the slot 43 by the L-shaped card plate 52, the positioning block 54 is inserted between the two limiting ribs 44.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A new energy cabinet aluminum alloy low pressure casting side feeder device, comprising a mold bottom plate, four side molds are arranged on the mold bottom plate, a cavity for forming a casting is formed between the four side molds, and the casting has a side feeder near the parting surface position of the side mold, characterized in that: It also includes a riser core for forming the side riser. The riser core is cylindrical. A riser sleeve is detachably installed on the outer surface of the riser core. The upper end of the riser sleeve is open. A heat insulation cover plate is movably hinged to the upper opening of the riser sleeve. Multiple heating rods are fixedly installed on the side mold surface near the side riser.

2. The side riser device for low-pressure casting of aluminum alloy housing for new energy vehicles according to claim 1, characterized in that: A notch is provided on the side surface of the riser sleeve near the riser core, and the riser sleeve is secured to the outer surface of the riser core through the notch.

3. The side riser device for low-pressure casting of aluminum alloy housing for new energy vehicles according to claim 2, characterized in that: The outer surface of the riser core is provided with a fitting surface that matches the shape of the riser sleeve. Both ends of the fitting surface are provided with sliding grooves, and the bottom of the sliding grooves is provided with slots. L-shaped clamping plates are fixedly installed on both sides of the slots of the riser sleeve, and the riser sleeve is engaged with the slots through the L-shaped clamping plates.

4. The side riser device for low-pressure casting of aluminum alloy housing for new energy vehicles according to claim 1, characterized in that: Both the riser sleeve and the heat insulation cover are made of asbestos or aluminum silicate.

5. The side riser device for low-pressure casting of aluminum alloy housing for new energy vehicles according to claim 3, characterized in that: The length of the groove opening is greater than the width of the L-shaped card plate.

6. The side riser device for low-pressure casting of aluminum alloy housing for new energy vehicles according to claim 3, characterized in that: Two limiting ribs are fixedly installed side by side in the middle of the fitting surface, and a positioning block is fixedly installed on the inner side wall of the riser sleeve. When the riser sleeve is engaged with the slot by the L-shaped card plate, the positioning block is inserted between the two limiting ribs.

7. The side riser device for low-pressure casting of aluminum alloy housing for new energy vehicles according to claim 1, characterized in that: The outer surface of the riser sleeve is provided with anti-slip grooves.

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