TWI682613B - Rotor short-circuit ring casting mold structure - Google Patents

Abstract

The invention discloses a rotor short-circuit ring casting mold structure, which includes a left module, a right module, a center axis module and a bearing seat. The core shaft hole of the rotor is penetrated through the central axis module, and the left and right modules clamp the outer circumferential side of the armature core, so as to surround each conductive copper sheet surrounding the core and protruding the end surface of the core, and in the axial direction of the core A casting zone is defined at each end. By the composition of the above components, the casting process is facilitated, and short-circuit rings integrally formed with the free ends of the conductive copper sheets are cast on both ends of the iron core axial direction.

Description

Rotor short-circuit ring casting mold structure

The invention relates to a technical field related to a casting process, in particular to a rotor short-circuit ring casting mold for casting a rotor short-circuit ring structure.

In the design of the motor, in addition to the use of changes in the phase of the alternating current to generate a changing magnetic field, the surrounding magnetic field can also be used to induce the intermediate rotor to generate a magnetic field, so that the rotor does not need to be wound around the coil, and there is no need for carbon brushes, etc. To simplify the structure of the rotor, please refer to Figures 6 and 7, as shown in the squirrel-cage rotors of induction motors (single-phase and three-phase), conductive copper sheets 92 (or rods) are inserted in the stacked silicon steel sheet core 91 At both ends, the short-circuit ring 93 turns into a squirrel-cage type, which is induced by the surrounding changing magnetic field to generate eddy current and magnetic force to rotate.

Knowing the method and structure of the short-circuit ring 93, a plurality of short-circuit ring copper pieces 931 are nested on the end of the conductive copper piece 92 protruding from the end surface of the iron core 91, and each short-circuit ring is made through the socket on the short-circuit ring copper piece 931 The copper sheets 931 can be stacked on top of each other and welded to a certain thickness.

The manufacturing method of the short-circuit ring 93 mentioned above has great disadvantages, because the short-circuit ring copper sheets 931 may not be tightly bonded in the middle of the stack, and there must be gaps, and each short-circuit ring copper sheet 931 must be welded once. Very slow, unfavorable industrial manufacturing, and the quality is not stable, the yield and efficiency are not good.

In view of the above-mentioned problems and deficiencies of the conventional art, the main purpose of the present invention is to provide a rotor short-circuit ring casting mold, through the innovation of the casting mold structure, to overcome the trouble and inconvenience of the conventional short-circuit ring manufacturing.

According to the above object of the present invention, a rotor short-circuit ring casting mold structure is proposed, which includes a left module, a right module, a center axis module and a bearing seat. The core shaft hole of the rotor is penetrated through the central axis module, and the left and right modules clamp the outer circumferential side of the armature core, so as to surround each conductive copper sheet surrounding the core and protruding the end surface of the core, and in the axial direction of the core A casting zone is defined at each end. By the composition of the above components, the casting process is facilitated, and short-circuit rings integrally formed with the free ends of the conductive copper sheets are cast on both ends of the iron core axial direction.

10‧‧‧Left module

121‧‧‧Inner torus of left mold body

122‧‧‧locking part of left mold body

123‧‧‧Left keyhole

124‧‧‧Left through hole

12‧‧‧Left model body

141‧‧‧Inner ring of the left mold crown

142‧‧‧locking part of left mold crown

143‧‧‧Left die crown ring groove

144‧‧‧Key hole for left mold crown

14‧‧‧Left die crown

162‧‧‧Left lever

16‧‧‧Left grip

20‧‧‧Right module

221‧‧‧Inner torus of right mold body

222‧‧‧Right part of right mold body

223‧‧‧Keyhole

224‧‧‧Through hole

22‧‧‧Right model body

241‧‧‧Inner ring of the right mold crown

242‧‧‧Right part of right mould crown

243‧‧‧Right mold crown ring groove

244‧‧‧Key hole

24‧‧‧Right mold crown

262‧‧‧Right plunger

26‧‧‧right grip

30‧‧‧Axis module

31‧‧‧ Central axis

32‧‧‧Shaft sleeve

33‧‧‧ Wash

34‧‧‧Nut

50‧‧‧Carrier

52‧‧‧bearing end face

54‧‧‧Event space

60‧‧‧Rotor short circuit ring

81‧‧‧Iron core

82‧‧‧Conducting copper sheet

A‧‧‧Locking element

B‧‧‧ Casting area

<Learning>

91‧‧‧Iron

92‧‧‧Conducting copper sheet

93‧‧‧short circuit ring

931‧‧‧Short ring copper sheet

Figure 1 is a schematic diagram of an embodiment of a casting mold for a rotor short-circuit ring of the present invention.

Figure 2 is a schematic cross-sectional view of the embodiment shown in Figure 1.

Figure 3 is an exploded view of the embodiment shown in Figure 1.

Figure 4 is a schematic diagram of the operation of the rotor short-circuit ring casting mold of the present invention.

Figure 5 is a schematic diagram of the rotor structure of the integrally formed short-circuit ring of the present invention.

Figure 6 is a schematic diagram of a conventional rotor structure with a short-circuit ring.

Figure 7 is a partial schematic view of the embodiment shown in Figure 6.

In the following, please refer to the related drawings to further illustrate the structural example of the rotor short-circuit ring casting mold of the present invention. In order to facilitate the understanding of the embodiment of the present invention, the following phase The same components are marked with the same symbols.

The drawings are for illustrative purposes only, and are not drawn according to the original dimensions. On the other hand, well-known elements and steps are not described in the embodiments to avoid unnecessary restrictions to the present invention.

Please refer to FIGS. 1 to 4, the rotor short-circuit ring casting mold of the present invention is used to clamp the radial outer peripheral side of the core 81 of a squirrel cage rotor, around the core 81 and protruding the end face of the core Each conductive copper sheet 82 facilitates the casting process and includes a left module 10, a right module 20, a center axis module 30, and a carrier 50.

Since the left and right modules 10 and 20 are the same component, the left and right mirror clip armature cores 91 are used on the radial outer peripheral side. In order to avoid the repeated description of the components, the remaining components will use the structure of the left module 10 as the main statement. Chen Ming first.

The above left (right) module 10 (20) includes a left (right) mold body 12 (22), two left (right) mold crowns 14 (24), and a left (right) grip 16 (26) .

The left (right) mold body 12 (22) has a slightly semi-circular outline (not limited to this) with a left (right) mold body inner ring surface 121 (221), and two left (right) The mold body locking portion 122 (222), at least one left (right) mold body lock hole 123 (223), and a left (right) mold body through hole 124 (224).

The inner ring surface 121 (221) of the left (right) mold body is recessed at the end surface of the left (right) mold body 12 (22) abutting the iron core 81, and matches the local radial outer contour of the iron core 81.

The aforementioned left (right) mold body locking portions 122 (222) are formed at the end sections of the left and right extension directions of the left (right) mold 12 (22), corresponding to the inner circumferential surface 121 (221) of the left (right) mold body ) The left and right ends of the) and face the right (left) phantom 22 (12).

The aforementioned left (right) mold body lock hole 123 (223) is formed through the left (right) mold body 12 (22), and two ports are respectively formed in the corresponding left (right) mold body lock abutment portions 122 (222) end face, and the left (right) mold body 12 (22) outer end face. During implementation, the left (right) mold body lock hole 123 (223) and the right (left) mold body lock hole 223 (123) are matched perforations and threaded holes, providing a locking element A penetration and screw lock.

The aforementioned left (right) mold body through-holes 124 (224) are formed through the left (right) mold body 12 (22), and two ports are respectively formed on the inner circumferential surface 121 (221) and left (right) of the left (right) mold body ) The outer end surface of the mold body 12 (22). In practice, the left (right) die body through hole 124 (224) is a class hole.

Each of the left (right) mold crowns 14 (24) has a slightly semi-circular tube shape (not limited to this), and is located at both ends of the left (right) mold body 12 (22) in the axial direction So that its axial length is longer than the axial length of the iron core 81 (see Figure 2), with a left (right) mold crown inner ring surface 141 (241), two left (right) mold crown locking parts 142 (242), a left (right) mold crown ring groove 143 (243), at least one left (right) mold crown lock hole 144 (244).

The aforementioned inner ring surface 141 (241) of the left (right) mold crown is concavely formed on the end surface of the left (right) mold crown 14 (24) abutting the radial end surface of the iron core 81, and matches the local outer diameter contour of the iron core 81 .

The foregoing left (right) mold crown locking portions 142 (242) are formed at the end sections of the left and right extension directions of the left (right) mold crown 14 (24), corresponding to the inner ring surface 141 of the left (right) mold crown 241) the left and right ends, and facing the abutting right (left) die crown 24 (14).

The aforementioned left (right) die crown ring groove 143 (243) is formed by the top surface of the partially recessed left (right) die crown 14 (24), and the bottom of the left (right) die crown ring groove 143 (243) is lower than the iron The axial end face of the core 81 and the groove wall of the left (right) die crown ring groove 143 (243) are separated from the radial end face of the iron core 81 by a predetermined gap.

The aforementioned left (right) mold crown locking hole 144 (244) is formed through the left (right) mold crown 14 (24), and two ports are formed on the end surfaces of the left (right) mold crown locking portions 142 (242), And the outer end face of the left (right) mold crown 14 (24). During implementation, the left and right mold crowns The locking holes 144 and 244 are matching perforations and threaded holes to provide a locking element A penetration and screw lock.

The left (right) grip 16 (26) has a protruding left (right) plunger 162 (262) at one end, so that it is from the outside of the left (right) mold body 12 (24), corresponding to the left (right) mold The through holes 124 (224) are inserted, and the left (right) plunger 162 (262) and the left (right) grip 16 (26) partially match the class outline of the left (right) mold through hole 124 (224). During implementation, the left (right) grips 16 (26) are used to conveniently lift and flip the left (right) phantoms 12 (22).

The above-mentioned central shaft module 30 is a shaft hole 83 extending through the core 81, and includes a central shaft 31, two shaft sleeves 32, two washers 33, and two nuts 34.

The aforementioned central shaft 31 penetrates the shaft hole 83 of the iron core 81 and has screw threads at both ends (not shown).

The aforementioned sleeves 32 are respectively sleeved on the outer peripheral side of the center shaft 31 and abut on the partial axial end surface of the iron core 81 in the axial direction. In implementation, a casting zone B is defined by the outer circumferential side of each sleeve 31, the left (right) mold crown ring groove 143 (243) of the left (right) mold crown 14 (24), and the axial end surface of the iron core 81.

The above-mentioned washers 33 are respectively sleeved on the outer peripheral side of the middle shaft 31 and abut on the matched sleeve 32.

The aforementioned nuts 34 correspond to the screw locks at both ends of the middle shaft 31 to restrain the sleeve 32 and the washer 33.

The bearing base 50 has a bearing end surface 52 for the left (right) mold crown 14 (24) to press against, and a movable space 54 for the central axis module 30 to partially penetrate.

Therefore, the above is an introduction to the components of the rotor short-circuit ring casting mold structure and the assembly method provided in a preferred embodiment of the present invention. The operating characteristics of the embodiment of the present invention are described below.

First, after the middle shaft 31 of the middle shaft module 30 passes through the iron core 81 and the shaft hole 83, the shaft sleeve 32 and the washer 33 are sequentially sleeved on the two ends, and then the nut 34 is screwed together. The sleeve 32 clamps both ends of the iron core 81 in the axial direction.

The left and right modules 10 and 20 are respectively clamped and clamped on the radially outer side of the core 81, so that the left and right inner surfaces 121 and 221 of the left and right mold bodies 12, 22 are placed against the core 81 respectively , And make the left and right mold body locking parts 122 and 222 relatively abut, and then extend the locking element A and screw the left and right mold body lock holes 123 and 223 to the left and right mold bodies 12, 22 Form constraints.

Then, the two left and right mold crowns 14, 24, respectively, are provided at both ends of the left and right mold bodies 12, 22 in the axial direction, and the inner ring surfaces 141, 241 of the left and right mold crowns are pressed against and clamped to the iron core 81 The radial outer surface makes the left and right mold crown locking parts 142 and 242 abut and engage with each other, cooperates with the locking element A to penetrate and screw the left and right mold crown lock holes 144 and 244 to align the left and right mold crowns 14, 24 form constraints.

At this time, the left and right die crown ring grooves 143, 243 of the left and right die crowns 14, 24 respectively define the casting zone B with the axial end surface of the iron core 81 and the bush 32, and provide the pouring of the copper casting fluid C And is constrained to a preset position.

After the casting of one axial end of the core 81 is completed (cooling), the left and right modules 10, 20 and the clamped core 81 (central axis module 30) can be reversed through the left and right grips 16, 26 It is stacked on the bearing end surface 52 of the bearing base 50, and the central axis module 30 of the end partially protrudes into the movable space 54 of the bearing base 50, so that the cast iron core 81 can be continued to the other end in the axial direction.

After the casting of both ends of the iron core 81 is completed, the left module 10, the right module 20, the central axis module 30, and the bearing base 50 can be taken away, and the casting of the rotor short-circuit ring 60 is completed (the fine can be refined later) Processing, not within the scope of the invention).

The above descriptions are only preferred embodiments of the present invention, and are intended to clarify the features of the present invention, not to limit the scope of the embodiments of the present invention, and the average changes made by those skilled in the art according to the present invention , And changes well known to those skilled in the art, should still be covered by the present invention range.

12‧‧‧Left model body

143‧‧‧Left die crown ring groove

14‧‧‧Left die crown

16‧‧‧Left grip

22‧‧‧Right model body

243‧‧‧Right mold crown ring groove

24‧‧‧Right mold crown

26‧‧‧right grip

30‧‧‧Axis module

50‧‧‧Carrier

82‧‧‧Conducting copper sheet

A‧‧‧Locking element

Claims (3)

A casting mold for rotor short-circuit ring is used to surround a casting area of a squirrel-cage rotor core axial end and its protruding plural conductive copper sheets to facilitate casting process, which includes: a The left die set consists of a left die body and two left die crowns; the left die body is integrally formed: an inner ring surface of the left die body is formed on the left die body against the radial outer peripheral surface of the iron core The connecting end face is slightly half-circular; the two left mold body locking portions are formed at the end section of the left and right extending directions of the left mold body; at least one left mold body lock hole is formed through the left mold body, two Ports are formed in the corresponding locking portions of the left mold body and the outer end surface of the left mold body; a left mold body through hole is formed through the left mold body to provide a left grip insertion; each left mold The crowns are respectively provided at both ends of the left mold body axial direction so that the axial length is greater than the axial length of the iron core, and have: a left mold crown inner ring surface formed on each of the left mold crown and the The end surface of the radial outer surface of the iron core abuts in a slightly half ring shape; the two left mold crown locking portions are formed at the end sections of the left and right extension directions of the left mold crown; one left mold crown ring groove is a partial Recesses are formed on the top surface of the left mold crown, and the groove bottom of the left mold crown ring groove is lower than the axial end of the iron core The groove wall of the ring groove of the left mold crown has a predetermined gap from the radial end face of the core; at least one lock hole of the left mold crown is formed through each of the left mold crowns, and two ports are formed in the corresponding The locking part of the left mold crown and the outer end surface of each left mold crown; a right module including a right mold body and two right mold crowns; the right mold body has an integrally formed: an inner ring of a right mold body The surface is formed on the end surface of the right mold body contacting the radial outer peripheral surface of the iron core, which is slightly half-circular; the two right mold body locking portions are formed on the end section of the right mold body in the left and right extension directions ; At least one right mold body lock hole, which matches the left mold body lock hole, is formed through the right mold body, and two ports are respectively formed in the corresponding right mold body lock abutment portions and the outer end surface of the right mold body, Provide a locking element penetration and screw lock; a right die body through-hole, formed through the right die body, providing a right grip insertion; each of the right die crown, respectively located in the axial axis of the right die body The axial length of both ends is greater than the axial length of the core, and is integrally formed: an inner ring surface of the right mold crown is formed on the end surface of each right mold crown that abuts the radial end surface of the core , Slightly half-circular; the two right mold crown locking portions are formed at the end sections of the left and right extension directions of the right mold crown; A right die crown ring groove is formed by partially recessing the top surface of the right die crown, and the groove bottom of the right die crown ring groove is lower than the axial end surface of the iron core, and the groove wall of the right die crown ring groove is away from the The radial end mask of the iron core has a preset gap; at least one right mold crown lock hole is matched with the left mold crown lock hole, formed through each right mold crown, and two ports are formed on the corresponding right mold crown locks respectively The end face of the abutment part and the outer end face of the right mold crown provide a locking element penetration and screw lock; It sleeves on the outer peripheral side of the central shaft and abuts the axial end surface of the core, and defines the casting area together with the inner ring surface of the left and right mold crowns and the axial end surface of the core; the two nuts are screwed separately At both ends of the central shaft; a bearing seat has a bearing end surface for the left and right modules to press against, and an active space for one end of the middle shaft module to penetrate and recess the bearing end surface. According to the casting mold of rotor short-circuit ring described in item 1 of the patent application scope, one end of the left and right grips respectively has a protruding left and right plunger. The rotor short-circuit ring casting mold as described in item 1 of the patent application scope, wherein the left and right mold body through holes are class holes.

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