CN113385655A - Vertical cast aluminum die for motor rotor - Google Patents
Vertical cast aluminum die for motor rotor Download PDFInfo
- Publication number
- CN113385655A CN113385655A CN202010178146.0A CN202010178146A CN113385655A CN 113385655 A CN113385655 A CN 113385655A CN 202010178146 A CN202010178146 A CN 202010178146A CN 113385655 A CN113385655 A CN 113385655A
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- Prior art keywords
- cast aluminum
- die
- forming groove
- aluminum
- casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
- B22D17/2272—Sprue channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/28—Melting pots
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a vertical cast aluminum die of a motor rotor, which comprises: die-casting a melting cup; injecting the piston head; the lower end surface of the cast aluminum lower die is matched with the other end of the die-casting melting cup cylindrical structure and is provided with a forming groove for die-casting molding of aluminum liquid; the cast aluminum middle ring is of a cylindrical structure, and the lower end of the cast aluminum middle ring is connected to the upper end face of the cast aluminum lower die in a matching manner; the lower end surface of the cast aluminum upper die is connected with the upper end of the cast aluminum middle ring in a matching way; the lower end of the cast aluminum dummy shaft penetrates through the center of the cast aluminum upper die, penetrates into the cast aluminum middle ring and extends to abut against the center of the cast aluminum lower die, and an accommodating cavity for accommodating the rotor punching iron core is formed between the outer side surface of the cast aluminum dummy shaft and the inner wall of the cast aluminum middle ring; the lower die base plate is arranged between the aluminum casting lower die and the die-casting melting cup, the lower die base plate is provided with a feeding cavity which is in one-to-one correspondence with the forming groove of the aluminum casting lower die, the feeding cavity is a through hole, and a feeding runner which communicates the forming groove with the feeding cavity is arranged between the forming groove of the aluminum casting lower die and the feeding cavity in one-to-one correspondence.
Description
Technical Field
The invention relates to the technical field of motor cast aluminum mould equipment, in particular to a vertical cast aluminum mould for a motor rotor.
Background
The rotors of the middle and small low-voltage motors in China all adopt die casting technology, the die casting has two forms of horizontal type and vertical type, because of the limitation of horizontal type die casting equipment and the high price of dies, the rotors with smaller specifications and large batches generally adopt horizontal type die casting, and the rotors with small quantity and larger size generally adopt vertical type die casting.
The middle-sized rotor is large in rotor diameter, vertical die-casting technology is adopted between 250-500 mm, a fan blade aluminum feeding mode is adopted in the traditional method, the feeding area is large, the technology is reasonable, the die-casting quality is good, but a die-casting lower die is prone to deformation and cracking due to the fact that the working environment is severe, the service life of the die is short, and the cost is very high.
Fig. 1 is a schematic structural diagram of a conventional vertical aluminum casting mold, wherein a die-casting lower mold 4 directly contacts with a melting cup 5, the aluminum casting lower mold 4 needs to bear a pressing force of a rotor sheet 2, the mold working environment is very harsh, and the lower mold 4 is completely vacated in an inner cavity of the melting cup 5, which is prone to causing problems of sinking, deformation, cracking and the like, resulting in a short service life of the mold, wherein reference numeral 1 shown in fig. 1 is a cast aluminum dummy shaft, 3 is a cast aluminum middle ring, and 6 is an injection piston head.
Disclosure of Invention
Aiming at the situation of the prior art, the invention aims to provide the vertical cast aluminum mold for the motor rotor, which has long service life, is convenient to technically modify and reliable to implement, and can improve the product quality and the production efficiency under the low-cost mold investment budget.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
a vertical cast aluminum mould for a motor rotor comprises:
the die-casting melting cup is of a cylindrical structure and is used for accommodating aluminum liquid to be cast and formed;
the injection piston head is slidably arranged at one end in the cylindrical structure of the die-casting melting cup in a penetrating way and is used for driving the aluminum liquid in the die-casting melting cup to output;
the lower end surface of the cast aluminum lower die is matched with the other end of the die-casting melting cup cylindrical structure and is provided with a forming groove for die-casting molding of aluminum liquid;
the cast aluminum middle ring is of a cylindrical structure, and the lower end of the cast aluminum middle ring is tightly connected to the upper end surface of the cast aluminum lower die in a matching manner;
the lower end surface of the cast aluminum upper die is tightly matched and connected with the upper end of the cast aluminum middle ring;
the lower end of the cast aluminum dummy shaft penetrates through the center of the cast aluminum upper die, penetrates into the cast aluminum middle ring and extends to abut against the center of the cast aluminum lower die, and an accommodating cavity for accommodating the rotor punching iron core is formed between the outer side surface of the cast aluminum dummy shaft and the inner wall of the cast aluminum middle ring;
the die casting device is characterized by further comprising a lower die base plate, the lower die base plate is arranged between the cast aluminum lower die and the die-casting melting cup, a feeding cavity in one-to-one correspondence with the forming groove of the cast aluminum lower die is formed in the lower die base plate, the feeding cavity is a through hole, and feeding runners communicated with the forming groove and the feeding cavity are arranged between the forming groove of the cast aluminum lower die and the feeding cavity in one-to-one correspondence.
As a possible implementation mode, the scheme further comprises an upper die exhaust plate, the upper die exhaust plate is fixed on the upper end surface of the aluminum casting upper die, and the lower end of the aluminum casting dummy shaft sequentially penetrates through the upper die exhaust plate and the aluminum casting upper die center, penetrates into the aluminum casting middle ring and extends to abut against the aluminum casting lower die center.
As a possible implementation manner, further, the molding grooves include a fan blade molding groove and a balance column molding groove, the fan blade molding groove and the balance column molding groove are arranged in a staggered manner in an annular array by taking the center of the cast aluminum lower die as a base point, and the feeding flow channel correspondingly includes a fan blade molding groove feeding flow channel and a balance column molding groove feeding flow channel.
Preferably, the number of the fan blade forming grooves and the number of the balance column forming grooves are 8-19.
Preferably, the fan blade forming groove feeding runner and the balance column forming groove feeding runner are respectively and correspondingly provided with a conical inclined plane for assisting in drawing, and a large opening end of the conical inclined plane is connected with the fan blade forming groove and the balance column forming groove.
As a preferred option, preferably, the feeding cavity comprises a blade forming groove feeding cavity and a balance column forming groove feeding cavity corresponding to the blade forming groove feeding channel and the balance column forming groove feeding channel, respectively.
Preferably, the fan blade forming groove feeding cavity and the balance column forming groove feeding cavity are both provided with a conical inclined plane for assisting in drawing, and a large opening end of the conical inclined plane is connected with the die-casting melting cup.
As a possible embodiment, further, the upper end of the cast aluminum dummy shaft is provided with a tight ring matched with the cast aluminum upper die.
As a possible implementation mode, further, the center of the upper end surface of the lower cast aluminum die is provided with a dummy shaft matching groove matched with the lower end of the cast aluminum dummy shaft.
As a preferred option, the lower end of the cast aluminum dummy shaft is preferably of a tapered structure, and the dummy shaft matching groove is correspondingly a tapered groove.
By adopting the technical scheme, compared with the prior art, the invention has the beneficial effects that: according to the scheme, the lower die base plate is arranged between the lower aluminum casting die and the die-casting melting cup, so that the service life of the lower die-casting die is prolonged from hundreds of dies to tens of thousands of dies on the premise of ensuring an aluminum feeding mode in die-casting, the die cost is reduced, the product quality and the production efficiency are improved, aluminum liquid enters the fan blade forming groove and the balance column forming groove of the lower aluminum casting die and the upper aluminum casting die through the fan blade forming groove feeding cavity and the balance column forming groove feeding cavity in die-casting, and the formed fan blades, the balance columns and the aluminum ring are provided with the draft angles, so that the products can be taken out after die-casting is completed, and the die can ensure good working stability and product yield.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a conventional cast aluminum mold;
FIG. 2 is a schematic overall structure diagram of a mold according to the embodiment of the present invention;
FIG. 3 is a schematic sectional view of the aluminum casting lower die according to the embodiment of the invention;
FIG. 4 is a schematic top view of a lower die for aluminum casting according to an embodiment of the present invention;
FIG. 5 is a schematic sectional view of the lower die backing plate according to the embodiment of the present invention;
FIG. 6 is a schematic top view of a lower die plate according to an embodiment of the present invention;
fig. 7 is a schematic view showing a schematic fitting structure of the lower die backing plate and the cast aluminum lower die according to the embodiment of the present invention when they are stacked.
The illustrations of fig. 2-7 illustrate:
1. injecting the piston head; 2. die-casting a melting cup; 3. a lower die base plate; 31. a feed cavity; 311. a fan blade forming groove feeding cavity; 312. a balance column forming groove feeding cavity; 4. casting an aluminum lower die; 41. forming a groove; 411. a fan blade forming groove; 4111. a fan blade forming groove feeding runner; 412. a balance post forming groove; 4121. a balance post forming groove feeding runner; 42. a dummy shaft fitting groove; 5. casting an aluminum middle ring; 6. a rotor punching iron core; 7. casting an aluminum dummy shaft; 8. casting an aluminum upper die; 9. an upper die exhaust plate; 10. and (5) tightening the ring.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention will be more clearly and clearly defined.
As shown in one of fig. 2 to 7, the mold of the present invention comprises:
the die-casting melting cup 2 is of a cylindrical structure and is used for containing aluminum liquid to be cast and formed;
the injection piston head 1 is slidably arranged at one end in the cylindrical structure of the die-casting melting cup 2 and is used for driving the molten aluminum in the die-casting melting cup 2 to output;
the lower end surface of the cast aluminum lower die 4 is matched with the other end of the cylindrical structure of the die-casting melting cup 2 and is provided with a forming groove 41 for die-casting molding of aluminum liquid;
the cast aluminum middle ring 5 is of a cylindrical structure, and the lower end of the cast aluminum middle ring is tightly connected to the upper end face of the cast aluminum lower die 4 in a matching manner;
the lower end surface of the cast aluminum upper die 8 is tightly matched and connected with the upper end of the cast aluminum middle ring 5;
the lower end of the cast aluminum dummy shaft 7 penetrates through the center of the cast aluminum upper die 8, penetrates into the cast aluminum middle ring 5 and extends to abut against the center of the cast aluminum lower die 4, and an accommodating cavity for accommodating the rotor punching iron core 6 is formed between the outer side surface of the cast aluminum dummy shaft 7 and the inner wall of the cast aluminum middle ring 5;
because cast aluminium lower mould 4 is unsettled state with die-casting melting cup 2 complex middle part among the traditional scheme, it receives the gravity of rotor punching iron core 6 promptly other die-casting stress's the back of exerting pressure, produces deformation easily, consequently, for improving its life-span, this scheme still includes lower backing plate 3, lower backing plate 3 locate between cast aluminium lower mould 4 and the die-casting melting cup 2 and be equipped with on the lower backing plate 3 with the feeding chamber 31 of the shaping groove 41 one-to-one of cast aluminium lower mould 4, feeding chamber 31 be the through-hole, the one-to-one is equipped with the feeding runner that communicates shaping groove 41 and feeding chamber 31 between the shaping groove 41 of cast aluminium lower mould 4 and the feeding chamber 31.
Wherein, this scheme still includes mould air discharge plate 9, last mould air discharge plate 9 fix the up end of mould 8 on the cast aluminium, the lower extreme of cast aluminium dummy shaft 7 passes mould air discharge plate 9 and cast aluminium according to the preface and goes up mould 8 center and penetrate in cast aluminium centre circle 5 and extend butt joint to cast aluminium lower mould 4 center, in addition, in order to improve the gas tightness, the upper end of cast aluminium dummy shaft 7 be equipped with cast aluminium on the mould 8 complex tightring 10.
In addition, a preset mechanism required to be formed is made according to the forming groove 41, the forming groove 41 may include a fan blade forming groove 411 and a balance column forming groove 412, the fan blade forming groove 411 and the balance column forming groove 412 are arranged in an annular array in a staggered manner by using the center of the cast aluminum lower die 4 as a base point, the feeding runners correspondingly include a fan blade forming groove feeding runner 4111 and a balance column forming groove feeding runner 4121, and the feeding cavity 31 correspondingly includes a fan blade forming groove feeding cavity 311 and a balance column forming groove feeding cavity 312 respectively corresponding to the fan blade forming groove feeding runner 4111 and the balance column forming groove feeding runner 4121.
As a preferred design quantity, the number of the fan blade forming grooves 411 and the number of the balance post forming grooves 412 are 8 to 19.
In order to facilitate demolding, the fan blade forming groove feeding runner 4111 and the balance column forming groove feeding runner 4121 are respectively and correspondingly provided with a conical inclined surface for assisting in mold drawing, and the large opening end of the conical inclined surface is connected with the fan blade forming groove 411 and the balance column forming groove 412; the fan blade forming groove feeding cavity 311 and the balance column forming groove feeding cavity 312 are both provided with a conical inclined plane for assisting in drawing, and the large opening end of the conical inclined plane is connected with the die-casting melting cup 2.
In addition, a dummy shaft matching groove 42 matched with the lower end of the cast aluminum dummy shaft 7 is formed in the center of the upper end surface of the cast aluminum lower die 4; the lower end of the cast aluminum dummy shaft 7 is of a conical structure, and the dummy shaft matching groove 42 is correspondingly a conical groove.
By adopting the scheme, after the die opening of the rotor die-casting is finished, the aluminum-casting lower die 4 is driven by the lower die carriage to move rightwards relative to the lower die base plate 3, and the rotor fan blades and the balance column feed inlets are cut off on the parting surfaces of the aluminum-casting lower die 4 and the lower die base plate 3 to finish the die cutting action; the lower die base plate 3 lifts the lower die base plate 3 upwards along with the lower die lifting supporting plate under the pushing-up action of the lifting oil cylinder, so that the lower die base plate is separated from the sprue material cake.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. The utility model provides a vertical cast aluminium mould of electric motor rotor which characterized in that: it includes:
the die-casting melting cup (2) is of a cylindrical structure and is used for containing aluminum liquid to be cast and formed;
the injection piston head (1) is slidably arranged at one end in the cylindrical structure of the die-casting melting cup (2) in a penetrating way and is used for driving the molten aluminum in the die-casting melting cup (2) to output;
the lower end surface of the cast aluminum lower die (4) is matched with the other end of the cylindrical structure of the die-casting melting cup (2) and is provided with a forming groove (41) for die-casting molding of aluminum liquid;
the cast aluminum middle ring (5) is of a cylindrical structure, and the lower end of the cast aluminum middle ring is tightly matched and connected with the upper end surface of the cast aluminum lower die (4);
the lower end surface of the cast aluminum upper die (8) is tightly matched and connected with the upper end of the cast aluminum middle ring (5);
the lower end of the cast aluminum dummy shaft (7) penetrates through the center of the cast aluminum upper die (8), penetrates into the cast aluminum middle ring (5) and extends to abut against the center of the cast aluminum lower die (4), and an accommodating cavity for accommodating the rotor punching iron core (6) is formed between the outer side surface of the cast aluminum dummy shaft (7) and the inner wall of the cast aluminum middle ring (5);
it still includes lower mould backing plate (3), lower mould backing plate (3) locate between cast aluminium lower mould (4) and die-casting melting cup (2) and be equipped with on lower mould backing plate (3) with the feeding chamber (31) of forming groove (41) one-to-one of cast aluminium lower mould (4), feeding chamber (31) be the through-hole, one-to-one is equipped with the feeding runner with forming groove (41) and feeding chamber (31) intercommunication between forming groove (41) of cast aluminium lower mould (4) and feeding chamber (31).
2. The vertical cast aluminum mold for the motor rotor as claimed in claim 1, wherein: the aluminum casting device is characterized by further comprising an upper die exhaust plate (9), the upper die exhaust plate (9) is fixed on the upper end face of an aluminum casting upper die (8), and the lower end of the aluminum casting dummy shaft (7) sequentially penetrates through the upper die exhaust plate (9) and the aluminum casting upper die (8) center, penetrates into the aluminum casting middle ring (5) and extends to abut against the center of the aluminum casting lower die (4).
3. The vertical cast aluminum mold for the motor rotor as claimed in claim 1, wherein: the forming groove (41) comprises a fan blade forming groove (411) and a balance column forming groove (412), the fan blade forming groove (411) and the balance column forming groove (412) are arranged in an annular array in a staggered mode by taking the center of the cast aluminum lower die (4) as a base point, and the feeding runner correspondingly comprises a fan blade forming groove feeding runner (4111) and a balance column forming groove feeding runner (4121).
4. The vertical cast aluminum mold for the motor rotor as claimed in claim 3, wherein: the number of the fan blade forming grooves (411) and the number of the balance column forming grooves (412) are 8-19.
5. The vertical cast aluminum mold for the motor rotor as claimed in claim 3, wherein: the fan blade forming groove feeding runner (4111) and the balance column forming groove feeding runner (4121) are respectively and correspondingly provided with a conical inclined surface for assisting in drawing, and the large opening end of the conical inclined surface is connected with the fan blade forming groove (411) and the balance column forming groove (412).
6. The vertical cast aluminum mold for the motor rotor as claimed in claim 3, wherein: the feeding cavity (31) corresponding to the fan blade forming groove feeding runner (4111) and the balance column forming groove feeding runner (4121) respectively comprises a fan blade forming groove feeding cavity (311) and a balance column forming groove feeding cavity (312).
7. The vertical cast aluminum mold for the motor rotor as claimed in claim 6, wherein: the fan blade forming groove feeding cavity (311) and the balance column forming groove feeding cavity (312) are both provided with a conical inclined plane for assisting in drawing, and the large opening end of the conical inclined plane is connected with the die-casting melting cup (2).
8. The vertical cast aluminum mold for the motor rotor as claimed in claim 1, wherein: and the upper end of the cast aluminum dummy shaft (7) is provided with a tight ring (10) matched with the cast aluminum upper die (8).
9. The vertical cast aluminum mold for the motor rotor as claimed in claim 1, wherein: and a dummy shaft matching groove (42) matched with the lower end of the cast aluminum dummy shaft (7) is formed in the center of the upper end surface of the cast aluminum lower die (4).
10. The vertical cast aluminum mold for the motor rotor as claimed in claim 9, wherein: the lower end of the cast aluminum dummy shaft (7) is of a conical structure, and the dummy shaft matching groove (42) is correspondingly a conical groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010178146.0A CN113385655A (en) | 2020-03-14 | 2020-03-14 | Vertical cast aluminum die for motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010178146.0A CN113385655A (en) | 2020-03-14 | 2020-03-14 | Vertical cast aluminum die for motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113385655A true CN113385655A (en) | 2021-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010178146.0A Pending CN113385655A (en) | 2020-03-14 | 2020-03-14 | Vertical cast aluminum die for motor rotor |
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| Country | Link |
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| CN (1) | CN113385655A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117047064A (en) * | 2023-10-12 | 2023-11-14 | 四川富生电器有限责任公司 | Method for controlling demolding sequence of centrifugal casting mold of motor rotor |
-
2020
- 2020-03-14 CN CN202010178146.0A patent/CN113385655A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117047064A (en) * | 2023-10-12 | 2023-11-14 | 四川富生电器有限责任公司 | Method for controlling demolding sequence of centrifugal casting mold of motor rotor |
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