Die-casting die for outer rotor of motor

Abstract

The utility model discloses a motor outer rotor die-casting die, and relates to the technical field of motor manufacturing process equipment, the motor outer rotor die-casting die comprises a top plate and an upper die holder, an auxiliary ring is arranged in the middle of the upper die holder, an upper female die is arranged in the middle of one side of the auxiliary ring, and two pressing mechanisms which are the same in structure and installation mode are arranged on the lower portion of the upper die holder; the pressing mechanism comprises a clamping plate fixedly arranged on the upper portion of the lower die base, a cavity with the same outer diameter as the auxiliary ring is formed in the middle of the clamping plate, three inclined sliding blocks are equally arranged in the cavity, inclined sliding grooves are slidably formed in the upper portion and the lower portion of each inclined sliding block, and the two inclined sliding grooves are formed in the outer side of the surface of the auxiliary ring. According to the die-casting die, the problems that an old-fashioned die-casting die does not leave enough space, so that a motor punching sheet is deformed, the motor punching sheet can be accurately placed into the die, and the rotor punching sheet cannot be crushed during die assembly are solved.

Description

Technical Field

[0001] This application relates to the field of motor manufacturing process equipment technology, and in particular to an external rotor die-casting mold for motors. Background Art

[0002] Currently, external rotor die-casting molds for motors are widely used in various motor manufacturing fields, such as automotive motors, household appliance motors, industrial motors, etc. However, before the motor punching sheet is placed into the die-casting mold, there is no appropriate reserved space, and coupled with the elliptical phenomenon of the motor punching sheet, it is very difficult to accurately place it into the mold, and problems such as damaging the rotor punching sheet during mold closing often occur. Utility Model Content

[0003] In order to improve the problem that the old die-casting mold does not have enough space, causing deformation of the motor punching sheet, and being able to accurately place it into the mold without damaging the rotor punching sheet during mold closing, etc., this application provides an external rotor die-casting mold for motors.

[0004] The external rotor die-casting mold for motors provided by this application adopts the following technical solutions:

[0005] An external rotor die-casting mold for motors, including a top plate and an upper die holder, is characterized in that: an auxiliary ring is provided in the middle of the upper die holder, an upper female die is provided in the middle of one side of the auxiliary ring, and two pressing mechanisms with the same structure and the same installation method are provided below the upper die holder;

[0006] The pressing mechanism includes a clamping plate fixed on the upper part of the lower die holder. A cavity with the same outer diameter as the auxiliary ring is opened in the middle of the clamping plate, and three inclined sliders are equally divided in the cavity. The upper and lower parts of the inclined sliders are both slidably provided with inclined chutes, and both of the two inclined chutes are opened on the outer side of the surface of the auxiliary ring.

[0007] By adopting the above technical solution, the inclined chutes are arranged at the upper and lower parts of the inclined sliders, which can make the force for pushing the inclined sliders more uniform and prevent the inclined sliders from deviating.

[0008] Preferably, the pressing mechanism further includes a bolt hole opened in the middle of the side of the clamping plate. The inner wall of one side of the bolt hole is movably penetrated by an internal hexagonal bolt. A spring is sleeved outside the internal hexagonal bolt, and the spring is located between the internal hexagonal bolt and the side wall of the bolt hole. And one end of the internal hexagonal bolt penetrating through the bolt hole is fixedly connected to one side of the inclined slider.

[0009] By adopting the above technical solution, the internal hexagonal bolt can reciprocate in the bolt hole through the spring, and being fixedly connected to the inclined slider can move along with the inclined slider when the inclined slider moves.

[0010] Preferably, one end of the inclined slider is provided with an inwardly concave trapezoidal groove, and the other end is fixedly provided with an outwardly protruding trapezoidal convex block. The trapezoidal groove and the trapezoidal convex block have the same structure, and the three inclined sliders can be clamped through the trapezoidal groove and the trapezoidal convex block.

[0011] By adopting the above technical solution, the cooperation of the trapezoidal groove and the trapezoidal convex block can provide limit and better support performance for the inclined slider.

[0012] Preferably, an auxiliary ring is provided in the middle of the lower die base. A lower punch is fixedly provided in the middle of one side of the auxiliary ring. An outer rotor punching is sleeved outside the lower punch, and an inclined slider abuts against the outside of the outer rotor punching.

[0013] By adopting the above technical solution, the lower punch is arranged inside the outer rotor punching to position and support the outer rotor punching.

[0014] Preferably, two symmetrically arranged auxiliary limit blocks are provided outside the three interfaces of the inclined slider, and the two auxiliary limit blocks are respectively fixedly arranged on one side surface of the upper die base and the lower die base.

[0015] By adopting the above technical solution, the auxiliary limit blocks can help the inclined slider to dock and separate more stably.

[0016] Preferably, a casting through hole is provided on one side of the outer rotor punching, and the casting through hole fixedly penetrates through one side of the top plate.

[0017] By adopting the above technical solution, the casting through hole can better feed and pour the outer rotor punching.

[0018] Preferably, a support is fixedly provided at the lower part of the lower die base for supporting.

[0019] By adopting the above technical solution, the support can support the entire device.

[0020] Preferably, lifting rods, reset telescopic rods, and guiding telescopic rods are fixedly penetrated through the four corners of the top plate. One ends of the lifting rods, reset telescopic rods, and guiding telescopic rods all movably penetrate through the four corners of the upper die base, the clamping plate, and the lower die base, and the other ends are fixedly penetrated through the four corners of the support.

[0021] By adopting the above technical solution, the lifting rods can drive the upper die base and the lower die base to move and approach each other, the reset telescopic rods can reset the upper die base and the lower die base, and the guiding telescopic rods play a guiding role.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. It is fixedly connected by an internal hexagonal bolt. When the inclined chute at the upper part of the trapezoidal groove moves downward and the inclined chute at the lower part of the trapezoidal groove moves upward, the inclined surface of the inclined chute fits with the inclined surface of the trapezoidal groove, pushing the trapezoidal groove towards the outer rotor punching sheet side, making the annular surface on one side of the trapezoidal groove fit and abut against the outer surface of the outer rotor punching sheet, so that the trapezoidal groove provides external support for the outer rotor punching sheet during aluminum casting to prevent deformation of the outer rotor punching sheet. After the aluminum casting is completed, the two inclined chutes move outward, then the trapezoidal groove loses the acting force of the inclined chutes and will move backward following the spring until it separates from the outer rotor punching sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the top view of the upper die base of this application;

[0025] Figure 2 It is the top view of the lower die base of this application;

[0026] Figure 3 It is the schematic diagram of the internal structure of this application;

[0027] Figure 4 It is the cross-sectional view of the internal structure of this application;

[0028] Figure 5 It is the cross-sectional view of the pressing mechanism of this application;

[0029] Figure 6 It is the schematic diagram of the position of the casting material through hole of this application;

[0030] Figure 7 It is the schematic diagram of the connection relationship of the casting material through hole of this application.

[0031] Reference numerals: 1, upper die base; 2, upper female die; 3, lower die base; 4, lower male die;

[0032] 5, pressing mechanism; 51, clamping plate; 52, spring; 53, internal hexagonal bolt; 54, trapezoidal groove; 55, trapezoidal convex block; 56, bolt hole; 57, inclined slider; 58, inclined chute;

[0033] 6, outer rotor punching sheet; 7, auxiliary limit block; 8, casting material through hole; 9, support; 10, lifting rod; 11, reset telescopic rod; 12, guiding telescopic rod; 13, auxiliary ring; 14, top plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The following further elaborates on this application in conjunction with the attached Figure 1-7 drawings for a more detailed description.

[0035] The embodiment of this application discloses a die-casting mold for an outer rotor of a motor.

[0036] Embodiment 1

[0037] Refer to Figure 1, 3 , 6. A die-casting mold for an external rotor of a motor, including a top plate 14 located at the uppermost part. One side of the top plate 14 is fixedly penetrated by a casting through-hole 8, and the side of the casting through-hole 8 away from the top plate 14 is fixedly arranged on one side surface of the upper die base 1. One side of the casting through-hole 8 branches out into two channels, which are respectively communicated with the inner cavities of two external rotor punching sheets 6 (as Figure 3 shown). The four corners of the top plate 14 are fixedly penetrated by lifting rods 10, reset telescopic rods 11, and guiding telescopic rods 12. The positions of the lifting rods 10, reset telescopic rods 11, and guiding telescopic rods 12 are such that the lifting rod 10 is on the outside, the reset telescopic rod 11 is at the middle and near the side, and the guiding telescopic rod 12 is on the inside. The lifting rods 10, reset telescopic rods 11, and guiding telescopic rods 12 at the four corners of the top plate 14 are arranged oppositely. Moreover, the ends of the lifting rods 10, reset telescopic rods 11, and guiding telescopic rods 12 away from the top plate 14 also movably penetrate the four corners of the upper die base 1, the clamping plate 51, and the lower die base 3. Finally, the lifting rods 10, reset telescopic rods 11, and guiding telescopic rods 12 fixedly penetrate the four corners of the support 9.

[0038] Below the top plate 14, there is an upper die base 1. The middle part of the upper die base 1 is provided with two parallel and arranged through-T-shaped holes, and there is a certain distance between the two through-T-shaped holes in the middle of the upper die base 1. In the through-T-shaped holes of the upper die base 1, there are auxiliary rings 13, and in the middle of the surface of the auxiliary ring 13 away from the top plate 14, there is an upper female die 2 that can inject A00 aluminum.

[0039] Through the above settings, the casting through-hole 8 is fixedly arranged on one side of the top plate 14 and is communicated with the inner cavity of the external rotor punching sheet 6. A00 aluminum can be poured into the external rotor punching sheet 6 and the upper female die 2 through the casting through-hole 8. Both the top plate 14 and the upper die base 1 can provide support for the casting through-hole 8. The lifting rods 10, reset telescopic rods 11, and guiding telescopic rods 12 at the four corners of the top plate 14 can provide limit for the top plate 14, the upper die base 1, the clamping plate 51, the lower die base 3, and the support 9, and can provide longitudinal movement for the top plate 14 and the upper die base 1. The two auxiliary rings 13 in the through-T-shaped holes in the middle of the upper die base 1 can facilitate the replacement of the upper female die 2.

[0040] It should be noted that the top plate 14, the lifting rods 10, the reset telescopic rods 11, the guiding telescopic rods 12, and the auxiliary rings 13 are all prior arts, and their structural principles will not be elaborated here too much.

[0041] Refer to Figure 4 , 5, two pressing mechanisms 5 are provided at the lower part of the upper die base 1. Moreover, the two pressing mechanisms 5 not only have the same structure but also the same installation method. The pressing mechanism 5 includes a clamping plate 51 fixedly connected to the upper part of the lower die base 3. Two cavities are formed in the middle of the clamping plate 51. When the diameters of the two cavities are the same as the outer diameter of the auxiliary ring 13 and the positions of the cavities are consistent with the positions of the auxiliary ring 13.

[0042] Three inclined sliders 57 are arranged in the cavities. The three inclined sliders 57 are equally divided at 120 degrees. An inclined chute 58 is slidably arranged on the upper part of the inclined slider 57, and an inclined chute 58 is also slidably arranged on the lower part of the inclined slider 57. Moreover, the protruding parts on the upper and lower parts of the inclined slider 57 are exactly the same as the shape of the inclined chute 58. The inclined chute 58 and the inclined slider 57 have the same size. The side of the inclined chute 58 and the inclined slider 57 away from the outer rotor punching 6 is an inclined surface, and the same-side surface of the inclined slider 57 and the outer rotor punching 6 is semi-circular. The three inclined sliders 57 are connected end to end and are exactly the same as the outer diameter of the outer rotor punching 6.

[0043] At one end of each of the three inclined sliders 57, a trapezoidal groove 54 recessed inward is formed, and at the other end of each of the three inclined sliders 57, a trapezoidal convex block 55 protruding outward is provided. The three trapezoidal grooves 54 and the three trapezoidal convex blocks 55 not only have the same structure but also the same size. The three inclined sliders 57 can be connected end to end through the trapezoidal grooves 54 and trapezoidal convex blocks 55 provided on both sides to achieve clamping and abut against the surface of the outer rotor punching 6. The inclined chute 58 located on the upper part of the inclined slider 57 is formed on the outer side of the lower surface of the auxiliary ring 13 in the middle of the upper die base 1, and the inclined chute 58 located on the lower part of the inclined slider 57 is formed on the outer side of the upper surface of the auxiliary ring 13 in the middle of the lower die base 3.

[0044] A bolt hole 56 is formed in the middle of each side of the clamping plate 51. One end of an internal hexagonal bolt 53 movably penetrates through the inner wall on one side of each bolt hole 56. A spring 52 is sleeved on the outside of each internal hexagonal bolt 53. Each spring 52 is located between the internal hexagonal bolt 53 and the side wall of the bolt hole 56. The end of the internal hexagonal bolt 53 penetrating through the bolt hole 56 is fixedly connected to the middle of the surface of the inclined slider 57 away from the outer rotor punching.

[0045] With the above settings, the hexagon socket head cap screw 53 is fixedly connected to the trapezoidal groove 54. When the inclined chute 58 at the upper part of the trapezoidal groove 54 moves downward and the inclined chute 58 at the lower part of the trapezoidal groove 54 moves upward, the inclined surface of the inclined chute 58 fits with the inclined surface of the trapezoidal groove 54, pushing the trapezoidal groove 54 towards the outer rotor punching sheet 6, so that the annular surface on one side of the trapezoidal groove 54 fits and abuts against the outer surface of the outer rotor punching sheet 6, providing external support for the outer rotor punching sheet 6 during aluminum casting to prevent deformation of the outer rotor punching sheet 6. After the aluminum casting is completed, the two inclined chutes 58 move outward, then the trapezoidal groove 54 loses the acting force of the inclined chutes 58 and will move backward along with the spring 52 until it separates from the outer rotor punching sheet 6.

[0046] It should be noted that when the trapezoidal groove 54 and the outer rotor punching sheet 6 are not in contact, there is a 1 mm gap between the two surfaces, which facilitates the placement and removal of the outer rotor punching sheet 6.

[0047] Refer to Figure 3 、 4 As shown in

[0048] Through the above settings, the middle part of the auxiliary ring 13 is fixedly connected to the lower punch 4, which can provide a good supporting effect for the lower punch 4. The outer rotor punching sheet 6 is sleeved outside the lower punch 4, and there is an inclined slider 57 outside the outer rotor punching sheet 6. Therefore, the lower punch 4 and the inclined slider 57 can clamp and fix the outer rotor punching sheet 6 to prevent deformation of the outer rotor punching sheet 6. The auxiliary limit blocks 7 are arranged at the interfaces of the inclined slider 57. One is to provide support for the inclined slider 57, and the other is to provide limit for the inclined slider 57. The support 9 can provide support for the whole device.

[0049] The implementation principle of a die-casting mold for an external rotor of a motor in an embodiment of the present application is as follows: First, place the external rotor punching sheet 6 outside the lower punch 4, and then use the lifting rod 10, the reset telescopic rod 11, and the guiding telescopic rod 12 to close the top plate 14, the upper die base 1, and the lower die base 3 towards the bolt hole 56, driving the auxiliary rings 13 in the middle of the upper die base 1 and the auxiliary rings 13 in the middle of the lower die base 3 to move towards the middle. At the same time, drive the two inclined chutes 58 on the surfaces of the two auxiliary rings 13 to move. When the two inclined chutes 58 move towards the middle, their own inclined surfaces abut against the inclined surfaces of the inclined sliders 57, and drive the inclined sliders 57 to move towards the external rotor punching sheet 6 until they completely fit the external rotor punching sheet 6. The lower punch 4 positions and supports the external rotor punching sheet 6 inside the external rotor punching sheet 6. After the inclined sliders 57 abut against the external rotor punching sheet 6, the two auxiliary rings 13 also complete the coincidence. At this time, cast aluminum is poured into the inside of the external rotor punching sheet 6 and the upper female die 2 through the casting material through hole 8.

[0050] After the cast aluminum is completed, the lifting rod 10, the reset telescopic rod 11, and the guiding telescopic rod 12 drive the upper die base 1, the top plate 14, and the lower die base 3 to return to their respective positions. At this time, the two auxiliary rings 13 will also separate, driving the inclined chutes 58 to separate from the inclined sliders 57. The inclined sliders 57 are separated from the external rotor punching sheet 6 under the action of the spring 52, enabling the die-cast finished product to be taken out.

[0051] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A motor outer rotor die-casting mold, comprising a top plate (14) and an upper die seat (1), characterized in that: An auxiliary ring (13) is provided in the middle of the upper die seat (1), an upper die (2) is provided in the middle of one side of the auxiliary ring (13), and two clamping mechanisms (5) with the same structure and the same installation method are provided in the lower part of the upper die seat (1); The clamping mechanism (5) comprises a clamping plate (51) fixedly mounted on the upper part of the lower die seat (3), a cavity having the same outer diameter as the auxiliary ring (13) is provided in the middle of the clamping plate (51), and three inclined sliding blocks (57) are equally divided in the cavity, and inclined sliding grooves (58) are slidably arranged on the upper and lower parts of the inclined sliding blocks (57), and the two inclined sliding grooves (58) are both arranged on the outer side of the surface of the auxiliary ring (13).

2. The motor outer rotor die-casting mold according to claim 1, characterized in that: The clamping mechanism (5) also includes a bolt hole (56) opened in the middle of the side of the clamping plate (51), the inner wall of one side of the bolt hole (56) is movably penetrated by a hexagon socket bolt (53), a spring (52) is sleeved on the outside of the hexagon socket bolt (53), the spring (52) is located between the hexagon socket bolt (53) and the side wall of the bolt hole (56), and one end of the hexagon socket bolt (53) passes through the bolt hole (56) and is fixedly connected to one side of the inclined sliding block (57).

3. The motor outer rotor die-casting mold according to claim 1, characterized in that: One end of the inclined sliding block (57) is provided with an inwardly concave trapezoidal groove (54), and the other end is fixedly provided with an outwardly protruding trapezoidal protrusion (55); the trapezoidal groove (54) and the trapezoidal protrusion (55) have the same structure, and the three inclined sliding blocks (57) can be clamped together through the trapezoidal groove (54) and the trapezoidal protrusion (55).

4. The motor outer rotor die-casting mold according to claim 1, characterized in that: An auxiliary ring (13) is provided in the middle of the lower die seat (3), a lower punch (4) is fixedly provided in the middle of one side of the auxiliary ring (13), an outer rotor punch (6) is sleeved on the outside of the lower punch (4), and an inclined slider (57) is abutted against the outside of the outer rotor punch (6).

5. The motor outer rotor die-casting mold according to claim 1, characterized in that: Two auxiliary limit blocks (7) are symmetrically arranged outside the three interfaces of the inclined sliding block (57), and the two auxiliary limit blocks (7) are respectively fixed on the surface of one side of the upper die base (1) and the lower die base (3).

6. The motor outer rotor die-casting mold according to claim 4, characterized in that: A casting through hole (8) is provided on one side of the outer rotor punching sheet (6), and the casting through hole (8) is fixedly penetrated through one side of the top plate (14).

7. The motor outer rotor die-casting mold according to claim 1, characterized in that: A support (9) for supporting function is fixedly arranged at the lower part of the lower die base (3).

8. The motor outer rotor die-casting mold according to claim 6, characterized in that: The top plate (14) is fixedly provided with a lifting rod (10), a reset telescopic rod (11), and a guide telescopic rod (12) at the four corners thereof; one end of the lifting rod (10), the reset telescopic rod (11), and the guide telescopic rod (12) is movably passed through the four corners of the upper die base (1), the clamping plate (51), and the lower die base (3); and the other end is fixedly passed through the four corners of the support (9).

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