CN214920331U

CN214920331U - Centrifugal casting device with heat radiation structure

Info

Publication number: CN214920331U
Application number: CN202120740017.6U
Authority: CN
Inventors: 黎荣佳; 韩乃文; 林坚波; 李启件; 段国强
Original assignee: Guangzhou Wanbao Motor Co ltd
Current assignee: Guangzhou Wanbao Motor Co ltd
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2021-11-30
Anticipated expiration: 2031-04-12

Abstract

The utility model provides a centrifugal casting device with heat radiation structure, including the mould module, the mould module can be around the axis of rotation of self, and the mould module is used for forming the casting die cavity with the combination of casting raw materials, and the outside of mould module is provided with fan blade and radiating fin, the normal and the axis of rotation nonparallel of fan blade, fan blade are used for producing the air current, and radiating fin's normal is on a parallel with the axis of rotation, and radiating fin is used for increasing the heat radiating area of mould module. Through setting up fan blade and radiating fin, radiating fin and fan blade can increase the surface area of mould module for thermal giving off, the fan blade can produce the air current when mould module rotates, further promotes the heat exchange of mould module and external environment, makes the centrifugal casting device with heat radiation structure can improve the cooling shaping speed of product.

Description

Centrifugal casting device with heat radiation structure

Technical Field

The utility model relates to a centrifugal casting research field, especially a centrifugal casting device with heat radiation structure.

Background

In the traditional process, a die-casting method is adopted for producing the motor rotor, but the die-cast motor rotor has the defects of low density, air holes and air bubbles, poor concentricity and the like, so that the parameter requirements of a motor product with higher performance cannot be met, and various faults can occur during use.

The prior art is a process for producing a motor rotor by using a centrifugal casting method, such as the centrifugal casting method of the motor rotor disclosed in the invention with the application number of 20510299648.8 and the rotor forming method disclosed in the invention with the application number of 201520519743.4. The centrifugal casting method solves the problems of poor concentricity, low density, air holes, bubbles and the like existing in the die casting method.

In the centrifugal casting process, the molten liquid poured into the mold needs to be cooled and formed, and the cooling speed of the molten liquid determines the production speed of the product. In the prior art, the cooling speed of liquid in the die is low, the forming speed is low, the production takt of a product is correspondingly reduced, and the product yield is reduced.

Disclosure of Invention

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a centrifugal casting device with heat radiation structure, centrifugal casting device with heat radiation structure can improve the cooling shaping speed of product.

According to the utility model provides a centrifugal casting device with heat radiation structure, including the mould module, the mould module can wind the axis of rotation of self, the mould module is used for forming the casting die cavity with the combination of casting raw materials, the outside of mould module is provided with fan blade and radiating fin, the normal of fan blade with axis of rotation nonparallel, the fan blade is used for producing the air current, radiating fin's normal is on a parallel with the axis of rotation, radiating fin is used for the increase the heat radiating area of mould module.

According to the utility model provides a centrifugal casting device with heat radiation structure has following technological effect at least: through setting up fan blade and radiating fin, radiating fin and fan blade can increase the surface area of mould module for thermal giving off, the fan blade can produce the air current, further promotes the heat exchange of mould module and external environment, makes the centrifugal casting device with heat radiation structure can improve the cooling shaping speed of product.

According to some embodiments of the utility model, the mould module includes mould subassembly and lower mould subassembly, the mould subassembly can keep away from relatively or be close to down the mould subassembly, lower mould subassembly with be used for setting up the casting raw materials between the mould subassembly, lower mould subassembly go up the mould subassembly and be used for forming with the combination of casting raw materials casting cavity.

According to the utility model discloses a some embodiments, lower mould subassembly includes well heat dissipation wheel, well heat dissipation wheel sets up radiating fin.

According to some embodiments of the utility model, lower mould subassembly includes lower impeller, lower impeller sets up the fan blade.

According to the utility model discloses a some embodiments, go up the mould subassembly and include the heat dissipation wheel, it sets up to go up the heat dissipation wheel radiating fin.

According to the utility model discloses a few embodiments, go up the mould subassembly and include the impeller, it sets up to go up the impeller the fan blade.

According to some embodiments of the utility model, the mould module includes lower heat dissipation wheel, lower heat dissipation wheel sets up radiating fin.

According to some embodiments of the utility model, the mould module includes rotatory guide pillar, the one end of rotatory guide pillar is connected go up the mould assembly, the other end of rotatory guide pillar is connected lower heat dissipation wheel.

According to the utility model discloses a some embodiments, rotatory guide pillar is inserted and is established in the lower mould component, the lower mould component can be followed rotatory guide pillar removes, rotatory guide pillar can drive lower mould component with go up the synchronous rotation of mould component.

According to some embodiments of the utility model, the exhaust hole has been seted up to the mould module, the exhaust hole intercommunication casting die cavity and external environment, the axis in exhaust hole with the axis of rotation has the contained angle, the exhaust hole is close to the one end of axis of rotation with casting die cavity intercommunication, the exhaust hole is kept away from the one end and the external environment intercommunication of axis of rotation.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is an isometric view of a centrifugal casting apparatus with a heat dissipating structure according to the present invention;

fig. 2 is an exploded view of a centrifugal casting apparatus with a heat dissipating structure according to the present invention;

fig. 3 is a cross-sectional view of a centrifugal casting apparatus with a heat dissipating structure according to the present invention;

fig. 4 is an isometric view of a lower impeller provided in accordance with the present invention;

fig. 5 is an isometric view of an upper heat-dissipating wheel provided in accordance with the present invention;

figure 6 is an isometric view of a lower die holder according to the present invention.

Reference numerals:

a lower fixed seat 1,

A lower die 21, a lower die holder 22, an exhaust hole 221, a middle heat dissipation wheel 23, a lower impeller 24,

An upper die 31, a pouring hole 311, an upper heat dissipation wheel 32, an upper impeller 33,

A lower heat dissipation wheel 41, a rotary guide post 42, a driving shaft sleeve 43, a bearing seat 44,

Fan blade 51, radiating fin 52.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

According to the utility model provides a centrifugal casting device with heat radiation structure, including the mould module, the mould module can be around the axis of rotation of self, and the mould module is used for forming the casting die cavity with the combination of casting raw materials, and the outside of mould module is provided with fan blade 51 and radiating fin 52, and fan blade 51's normal and axis of rotation nonparallel, fan blade 51 are used for producing the air current, and radiating fin 52's normal is on a parallel with the axis of rotation, and radiating fin 52 is used for increasing the heat radiating area of mould module.

The centrifugal casting method is widely applied to the motor rotor processing technology of the motor because the problems of poor concentricity, low density, air hole bubbles and the like existing in the die casting method are improved, and the specific content of the centrifugal casting method can refer to the prior application of the applicant, namely the centrifugal casting method of the motor rotor of the invention with the application number of 20510299648.8.

During the mass production of products, the improvement of the production takt time of the products is a key factor for improving the yield, and in the casting process, because the poured liquid is high-temperature molten liquid, the liquid needs to be subjected to solidification and molding, and the products need to be cooled to a certain temperature, and then the products can be taken out after demolding, so that the casting process usually needs to consume longer waiting time and slow down the production takt time. For example, when the motor rotor is cast, the temperature of molten aluminum during casting is generally about 700 ℃, and the product can be taken out only after the temperature of the product is reduced to 300 ℃.

According to the utility model provides a centrifugal casting device with heat radiation structure, through setting up fan blade 51 and radiating fin 52, radiating fin 52 and fan blade 51 can increase the surface area of mould module for thermal giving off, fan blade 51 can produce the air current when the mould module rotates, further promotes the heat exchange of mould module and external environment, makes the centrifugal casting device with heat radiation structure can improve the cooling shaping speed of product.

The centrifugal casting device with the heat dissipation structure can be used for centrifugal casting of the motor rotor and can also be used for centrifugal casting of other parts. In the production of the motor rotor, the raw material for casting is generally a rotor core, and the molten liquid is generally molten aluminum water.

According to the utility model discloses a some embodiments, the mould module includes mould subassembly and lower mould subassembly, and the mould subassembly can keep away from relatively or be close to the mould subassembly down, is used for setting up the casting raw materials between mould subassembly and the last mould subassembly down, and lower mould subassembly, last mould subassembly are used for forming the casting die cavity with the casting raw materials combination.

In some embodiments, the lower die assembly includes a middle heat dissipation wheel 23, and the middle heat dissipation wheel 23 is provided with heat dissipation fins 52. In some embodiments, the lower die assembly includes a lower impeller 24, and the lower impeller 24 is provided with a fan blade 51.

For example, as shown in fig. 2 and 3, in some embodiments, the lower mold assembly includes a lower mold 21 and a lower mold base 22, the lower mold 21 is disposed on the lower mold base 22, the lower mold 21 and the lower mold base 22 are used for forming a casting cavity, a lower impeller 24 is installed on an upper side of the lower mold base 22 through a threaded connection, a middle heat dissipation wheel 23 is installed on a lower side of the lower mold base 22 through a threaded connection, and heat in the casting cavity is transferred to the lower impeller 24 and the middle heat dissipation wheel 23 through the lower mold base 22 during casting and is dissipated through outer surfaces of the fan blades 51 and the heat dissipation fins 52. The lower impeller 24 and the middle heat dissipation wheel 23 can effectively cool the lower die assembly.

In some embodiments, the upper die assembly includes an upper heat sink wheel 32, with the upper heat sink wheel 32 being provided with heat sink fins 52. In some embodiments, the upper die assembly includes an upper impeller 33, and the upper impeller 33 is provided with a fan blade 51.

For example, as shown in fig. 3, in some embodiments, the upper mold assembly includes an upper mold 31, the upper mold 31 is used to form a casting cavity, the upper heat dissipation wheel 32 is mounted on the upper mold 31 through a threaded connection, the upper impeller 33 is mounted on the upper heat dissipation wheel 32 through a threaded connection, and heat in the casting cavity is transferred to the upper heat dissipation wheel 32 and the upper impeller 33 through the upper mold 31 during casting and is dissipated through the outer surfaces of the fan blades 51 and the heat dissipation fins 52. Go up radiator wheel 32 and last impeller 33 and can effectively cool down to last mould assembly, go up mould 31 including the fashioned pouring section of upwards extending, the central authorities shaping of pouring section has the sprue gate, pours the molten liquid into the casting die cavity through the sprue gate.

According to some embodiments of the present invention, the mold module comprises a lower heat dissipation wheel 41, the lower heat dissipation wheel 41 being provided with heat dissipation fins 52. In some embodiments, the mold module includes a rotating guide post 42, one end of the rotating guide post 42 is connected to the upper mold assembly, and the other end of the rotating guide post 42 is connected to the lower heat dissipation wheel 41. The heat of the upper die assembly can be transferred to the lower heat dissipation wheel 41 through the rotating guide post 42, and the heat dissipation effect of the die module can be further improved by the lower heat dissipation wheel 41.

In some embodiments, the rotating guide post 42 is inserted into the lower mold assembly, the lower mold assembly can move along the rotating guide post 42, and the rotating guide post 42 can drive the lower mold assembly and the upper mold assembly to rotate synchronously. For example, as shown in fig. 2 and 3, in some embodiments, the mold module is provided with three rotating guide posts 42, one end of each rotating guide post 42 is connected to the upper heat dissipation wheel 32, the other end of each rotating guide post 42 is connected to the lower heat dissipation wheel 41, and the rotating guide posts 42 are inserted into the middle heat dissipation wheel 23. When the mold module rotates, the rotating guide post 42 keeps the rotation of the upper mold component and the lower mold component synchronous, and the reduction of the casting quality caused by the asynchronous rotation can be avoided.

According to some embodiments of the utility model, the exhaust hole 211 has been seted up to the mould module, and exhaust hole 221 communicates casting die cavity and external environment, and the axis of rotation of exhaust hole 221 have the contained angle, and exhaust hole 221 is close to the one end and the casting die cavity intercommunication of axis of rotation, and the one end and the external environment intercommunication of axis of rotation are kept away from to exhaust hole 221. For example, as shown in fig. 2, 3 and 6, in some embodiments, the lower mold base 22 has a vent hole 221 formed in a sidewall thereof. When the centrifugal casting device with the heat dissipation structure is used for producing the motor rotor, the rotor core is placed on the lower die 21, and the lower die assembly moves upwards to enable the upper die assembly and the lower die assembly to clamp the rotor core. The mold module rotates at high speed, and then the aluminum water is injected into the casting cavity through the pouring hole, and when the mold module rotates, a part of gas in the casting cavity is discharged from the exhaust hole 221 under the action of centrifugal force, so that a negative pressure environment is created in the casting cavity. By designing the shape of the casting cavity and the position of the exhaust hole 221, the aluminum water in the casting cavity cannot flow into the exhaust hole 221 due to centrifugal force, so that the gas in the casting cavity can be smoothly exhausted from the exhaust hole 221. The negative pressure centrifugal casting can improve the existing centrifugal casting process, reduce the defect of air holes and air bubbles formed during casting, generate negative pressure in a centrifugal force mode, do not need to repeatedly perform air extraction operation on a casting cavity, and can reduce the influence on the production rhythm.

According to some embodiments of the utility model, centrifugal casting device with heat radiation structure includes the base module, and the base module includes bottom plate 1, bearing frame 44 and initiative axle sleeve 43. For example, as shown in fig. 1 and fig. 2, a bearing seat 44 is disposed on the lower fixing plate 1, a driving shaft sleeve 43 is inserted into the bearing seat 44, the lower heat dissipation wheel 41 is mounted on the driving shaft sleeve 43, the driving shaft sleeve 43 is used for connecting a driving device, and the driving device drives the driving shaft sleeve 43 to rotate, so as to drive the mold module to rotate.

The centrifugal casting apparatus with a heat dissipation structure according to the present invention is described in detail with reference to fig. 1, 2, 3, 4, 5, and 6 in a specific embodiment. It is to be understood that the following description is illustrative only and is not intended as a specific limitation on the invention.

The centrifugal casting device with the heat dissipation structure comprises a base module and a mold module, wherein the mold module is rotatably arranged on the base module, and the mold module can rotate around a rotation shaft of the mold module.

The mould module comprises an upper mould component, a lower mould component, a rotary guide pillar 42 and a lower heat dissipation wheel 41, wherein the upper mould component comprises an upper mould 31, an upper heat dissipation wheel 3 and an upper impeller 33, the upper mould 31 comprises a pouring section which extends upwards for forming, a pouring hole is formed in the center of the pouring section, and molten liquid is poured into the pouring cavity through the pouring hole. The upper heat dissipation wheel 32 is mounted on the upper die 31 by screw connection, and the upper impeller 33 is mounted on the upper heat dissipation wheel 32 by screw connection. The lower die assembly comprises a lower die 21, a lower die base 22, a middle heat dissipation wheel 23 and a lower impeller 24, the lower die 21 is arranged on the lower die base 22, the lower impeller 24 is installed on the upper side of the lower die base 22 through threaded connection, and the middle heat dissipation wheel 23 is installed on the lower side of the lower die base 22 through threaded connection. The lateral wall of lower die holder 22 is last to be seted up a plurality of and to be linked together the exhaust hole 221 in external environment and casting die cavity, and exhaust hole 221 inclines in the axis of rotation setting, and the axis of rotation nonparallel of exhaust hole 221, the one end and the casting die cavity intercommunication that exhaust hole 221 is close to the axis of rotation, and the one end and the external environment intercommunication of axis of rotation are kept away from to exhaust hole 221. The mold module is provided with three rotating guide columns 42, one end of each rotating guide column 42 is connected with the upper heat dissipation wheel 32, the other end of each rotating guide column 42 is connected with the lower heat dissipation wheel 41, and the rotating guide columns 42 are inserted into the middle heat dissipation wheels 23.

The upper heat dissipation wheel 32, the middle heat dissipation wheel 23 and the lower heat dissipation wheel 41 are formed with heat dissipation fins 52, the normal lines of the heat dissipation fins 52 are parallel to the rotating shaft, the upper impeller 33 and the lower impeller 24 are formed with fan blades 51, and the normal lines of the fan blades 51 are not parallel to the rotating shaft.

The base module comprises a lower fixed seat 1, a bearing seat 44 is arranged on the lower fixed seat 1, an active shaft sleeve 43 is inserted into the bearing seat 44, the lower heat dissipation wheel 41 is installed on the active shaft sleeve 43, and the active shaft sleeve 43 is used for being connected with a driving device.

In use, a casting material such as a rotor core is placed on the lower mold 21, the upper mold assembly and the lower mold assembly sandwich the rotor core, and the upper mold 31, the rotor core, the lower mold 21, and the lower mold base 22 together form a casting cavity. Drive arrangement drive initiative axle sleeve 43 rotates, and then drives the high-speed rotation of mould module, and the rotation of mould module produces centrifugal force, and centrifugal force makes the aluminium water stereotype in the casting die cavity according to the form when designing on the one hand, and on the other hand makes the partial gas in the casting die cavity discharge from exhaust hole 221 to make the atmospheric pressure in the casting die cavity be less than atmospheric pressure, build negative pressure environment in the casting die cavity, realize electric motor rotor's negative pressure centrifugal casting.

The heat of the molten aluminum is transferred to the outer surface of the mold assembly through heat conduction, the heat dissipation fins 52 promote the heat dissipation, and the fan blades 51 generate air flow to further promote heat exchange.

According to the utility model discloses centrifugal casting device with heat radiation structure through the design more than adopting, can realize such some functions at least: through setting up fan blade 51 and radiating fin 52, radiating fin 52 and fan blade 51 can increase the surface area of mould module for thermal giving off, fan blade 51 can produce the air current when the mould module rotates, further promotes the heat exchange of mould module and external environment, makes the centrifugal casting device who has heat radiation structure can improve the cooling shaping speed of product.

The exhaust holes 221 can create a negative pressure environment in the casting cavity to realize negative pressure centrifugal casting, and the centrifugal casting device with the heat dissipation structure can reduce the defect of air holes and bubbles formed during casting.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A centrifugal casting device with a heat dissipating structure, comprising:

the mold comprises a mold module, the mold module can rotate around a rotating shaft of the mold module, the mold module is used for being combined with a casting raw material to form a casting cavity, fan blades (51) and radiating fins (52) are arranged on the outer side of the mold module, the normal lines of the fan blades (51) are not parallel to the rotating shaft, the fan blades (51) are used for generating air flow, the normal lines of the radiating fins (52) are parallel to the rotating shaft, and the radiating fins (52) are used for increasing the radiating area of the mold module.

2. The centrifugal casting device with a heat dissipating structure according to claim 1, wherein: the mould module includes mould subassembly and lower mould subassembly, lower mould subassembly can keep away from relatively or be close to go up the mould subassembly, lower mould subassembly with go up and be used for setting up the casting raw materials between the mould subassembly, lower mould subassembly go up the mould subassembly and be used for forming with the combination of casting raw materials casting die cavity.

3. The centrifugal casting device with a heat dissipating structure according to claim 2, wherein: the lower die assembly comprises a middle heat dissipation wheel (23), and the heat dissipation wheel (23) is provided with the heat dissipation fins (52).

4. The centrifugal casting device with a heat dissipating structure according to claim 2 or 3, wherein: the lower die assembly comprises a lower impeller (24), and the lower impeller (24) is provided with the fan blades (51).

5. The centrifugal casting device with a heat dissipating structure according to claim 2, wherein: the upper die assembly comprises an upper heat dissipation wheel (32), and the upper heat dissipation wheel (32) is provided with the heat dissipation fins (52).

6. The centrifugal casting device with a heat dissipating structure according to claim 2 or 5, wherein: the upper die assembly comprises an upper impeller (33), and the upper impeller (33) is provided with the fan blade (51).

7. The centrifugal casting device with a heat dissipating structure according to claim 2, wherein: the mold module comprises a lower heat dissipation wheel (41), and the lower heat dissipation wheel (41) is provided with the heat dissipation fins (52).

8. The centrifugal casting device with a heat dissipating structure according to claim 7, wherein: the die module comprises a rotary guide post (42), one end of the rotary guide post (42) is connected with the upper die assembly, and the other end of the rotary guide post (42) is connected with the lower heat dissipation wheel (41).

9. The centrifugal casting device with a heat dissipating structure according to claim 8, wherein: the rotary guide post (42) is inserted in the lower die assembly, the lower die assembly can move along the rotary guide post (42), and the rotary guide post (42) can drive the lower die assembly and the upper die assembly to synchronously rotate.

10. The centrifugal casting device with a heat dissipating structure according to claim 1, wherein: exhaust hole (211) have been seted up to the mould module, exhaust hole (221) intercommunication casting die cavity and external environment, the axis of exhaust hole (221) with the axis of rotation has the contained angle, exhaust hole (221) are close to the one end of axis of rotation with casting die cavity intercommunication, exhaust hole (221) are kept away from the one end and the external environment intercommunication of axis of rotation.