CN216531009U - Internal expanding stator coil shaping device - Google Patents
Internal expanding stator coil shaping device Download PDFInfo
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- CN216531009U CN216531009U CN202123107999.4U CN202123107999U CN216531009U CN 216531009 U CN216531009 U CN 216531009U CN 202123107999 U CN202123107999 U CN 202123107999U CN 216531009 U CN216531009 U CN 216531009U
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Abstract
The utility model provides an internal expansion type stator coil shaping device, which comprises internal expansion block fixing plates, a connecting shaft for connecting the two internal expansion block fixing plates, internal expansion blocks positioned between the internal expansion block fixing plates and the connecting shaft, a driving assembly for driving the internal expansion blocks to move outwards and a spring for driving the internal expansion blocks to move inwards, wherein the internal expansion block fixing plates and the connecting shaft are coaxially arranged, the first and second matching surfaces are jointed and abutted tightly by enabling the internal expansion blocks to comprise first and second internal expansion blocks which are equal in number and are arranged in a staggered mode and arranging the first/second matching surfaces on the first/second internal expansion blocks, so that the first internal expansion block is extruded in a space between two adjacent second internal expansion blocks, the second matching surfaces are not only driven to move outwards by the first internal expansion block to realize tensioning, but also driven to move inwards by the second internal expansion block to realize retraction, and when in tensioning, gaps between the internal expansion blocks can be sealed by the jointing of the two matching surfaces, avoid the enameled wire to get into, be difficult for damaging the enameled wire, the yields is high.
Description
Technical Field
The utility model relates to the technical field of stator manufacturing, in particular to an internal expanding type stator coil shaping device.
Background
The stator generally refers to a motor stator, generally includes silicon steel sheet and stator winding, and the stator winding is formed by the enameled wire coiling, after embedding the stator winding in the recess on the silicon steel sheet, needs to carry out the plastic to the stator winding, makes its laminating in the recess, vacates the space for inserting the rotor.
When the shaping is carried out, the mode that the inner expansion block expands the stator winding is usually adopted, most of the existing shaping devices for the stator coil of the inner expansion block only have one inner expansion block, in order to realize retraction after expansion, when the stator coil is in an expanded state, a gap is inevitably formed between every two adjacent inner expansion blocks, the enameled wire forming the stator winding is easy to enter the gap, as shown in figure 1, when the inner expansion blocks retract, the adjacent inner expansion blocks are close to each other, the gap gradually becomes smaller, the enameled wire entering the gap is easy to damage, the enameled wire is deformed by clamping, and the enameled wire is damaged by clamping or even broken, so that defective products and waste products are generated.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides the internal expanding type stator coil shaping device which is high in yield and not easy to damage enameled wires.
In order to achieve the above object, the present invention adopts a technical solution that an internal expanding stator coil shaping device comprises:
the inner expansion block fixing plate is disc-shaped and comprises an upper inner expansion block fixing plate and a lower inner expansion block fixing plate, the outer diameter of the upper inner expansion block fixing plate is smaller than the inner diameter of the stator winding, the outer diameter of the lower inner expansion block fixing plate is larger than the inner diameter of the stator winding, and the upper inner expansion block fixing plate and the lower inner expansion block fixing plate are arranged in parallel and at intervals;
the connecting shaft is used for connecting the upper fixing plate of the inner expansion block and the lower fixing plate of the inner expansion block, and the connecting shaft, the upper fixing plate of the inner expansion block and the lower fixing plate of the inner expansion block are coaxially arranged;
the inner expansion block is embedded in an annular cavity among the inner expansion block upper fixing plate, the inner expansion block lower fixing plate and the connecting shaft, and can move along the radial direction of the connecting shaft;
the driving assembly is used for driving the inner expanding block to move outwards;
the spring is annular, is embedded in a spring groove formed in the end part of the inner expansion block and has a tendency of driving the inner expansion block to move inwards;
the inner expansion blocks comprise first inner expansion blocks and second inner expansion blocks which are equal in number, the first inner expansion blocks and the second inner expansion blocks are arranged in a staggered mode, a first matching surface is arranged on the first inner expansion block, a second matching surface matched with the first matching surface is arranged on the second inner expansion block, the first inner expansion block is squeezed in a space between two adjacent second inner expansion blocks, the first matching surface and the second matching surface are attached and tightly abutted, gaps between the first inner expansion blocks and the second inner expansion blocks are sealed, when the driving assembly drives the first inner expansion blocks to move outwards, the first inner expansion blocks drive the second inner expansion blocks to move outwards through relative sliding of the first matching surface and the second matching surface, all the inner expansion blocks are tensioned in the stator coil, and when the spring drives the second inner expansion blocks to move inwards, the second internal expansion block drives the first internal expansion block to move inwards through the relative sliding of the first matching surface and the second matching surface, so that all the internal expansion blocks are separated from the stator coil.
Preferably, the included angle between the first matching surface and the moving direction of the first internal expanding block is 40-70 degrees.
Preferably, the outer wall of the inner expansion block is an arc surface, and when the first inner expansion block moves outwards to the limit position, the distance between the outer wall of the first inner expansion block and the outer wall of the second inner expansion block and the axial lead of the connecting shaft is equal.
Preferably, the spring grooves are formed at two end parts of the inner expansion block.
Preferably, the width of the spring slot on the first inner expanding block is larger than the width of the spring slot on the second inner expanding block.
Preferably, the number of internal expanding blocks is at least six.
Preferably, the driving assembly includes a slider disposed in a cavity between the first inner expanding block and the connecting shaft, and a support rod slidably and vertically disposed on the inner expanding block lower fixing plate, an outer wall of the slider gradually retracts toward the inner expanding block upper fixing plate, an inner wall of the first inner expanding block is matched with an outer wall of the slider, an end of the support rod close to the inner expanding block upper fixing plate is connected with the slider, and when the support rod slides, the support rod can drive the slider to slide along an axial direction of the connecting shaft, so that the outer wall of the slider is attached to and tightly abutted against the inner wall of the first inner expanding block, thereby driving the first inner expanding block to move outward.
Further preferably, the inner wall of the sliding block is kept attached to the outer wall of the connecting shaft.
Further preferably, there are a plurality of the sliding blocks, each sliding block corresponds to one of the supporting rods, and the ends of all the supporting rods far away from the sliding blocks are connected to the same supporting rod fixing plate.
Further preferably, the driving assembly further comprises a cylinder or a hydraulic cylinder connected with the support rod fixing plate.
Further preferably, the number of the sliding blocks is equal to that of the first internal expansion blocks, and the sliding blocks and the first internal expansion blocks are arranged in a one-to-one correspondence manner.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
the utility model provides an internal expansion type stator coil shaping device, which comprises internal expansion block fixing plates, a connecting shaft for connecting the two internal expansion block fixing plates, internal expansion blocks positioned between the internal expansion block fixing plates and the connecting shaft, a driving assembly for driving the internal expansion blocks to move outwards and a spring for driving the internal expansion blocks to move inwards, wherein the internal expansion block fixing plates and the connecting shaft are coaxially arranged, the first and second matching surfaces are jointed and abutted tightly by enabling the internal expansion blocks to comprise first and second internal expansion blocks which are equal in number and are arranged in a staggered mode and arranging the first/second matching surfaces on the first/second internal expansion blocks, so that the first internal expansion block is extruded in a space between two adjacent second internal expansion blocks, the second matching surfaces are not only driven to move outwards by the first internal expansion block to realize tensioning, but also driven to move inwards by the second internal expansion block to realize retraction, and when in tensioning, gaps between the internal expansion blocks can be sealed by the jointing of the two matching surfaces, avoid the enameled wire to get into, be difficult for damaging the enameled wire, the yields is high.
Drawings
Fig. 1 is an axial schematic view of an internal expanding block in a tensioning state in the prior art.
Fig. 2 is a schematic cross-sectional view of a preferred embodiment of the present invention, wherein the upper and lower portions respectively show the expanded state and the retracted state of the internal expanding block for comparison.
FIG. 3 is an axial view of the inner expansion block of FIG. 2 in a retracted state.
Fig. 4 is an axial schematic view of the inner expanding block in a tensioned state in fig. 2.
Wherein: 11. an upper fixing plate of the inner expansion block; 12. an inner expansion block lower fixing plate; 20. a connecting shaft; 30a. a first internal expansion block; 30b. a second internal expanding block; 31. a spring slot; 32. a first mating surface; 33. a second mating surface; 34. a gap; 41. a slider; 42. a support bar; 43. a support rod fixing plate; 44. a cylinder; 50. a spring; 60. a stator; 61. silicon steel sheets; 62. a stator winding; 63. and (4) enameled wires.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the utility model.
As shown in fig. 2 to 4, the present invention provides an internal expanding stator coil shaping device, comprising: the stator comprises an inner expansion block fixing plate, a connecting shaft 20, an inner expansion block 30, a driving assembly and a spring 50, wherein the inner expansion block fixing plate is disc-shaped and comprises an upper inner expansion block fixing plate 11 and a lower inner expansion block fixing plate 12, the outer diameter of the upper inner expansion block fixing plate 11 is smaller than the inner diameter of a stator winding 62, the outer diameter of the lower inner expansion block fixing plate 12 is larger than the inner diameter of the stator winding 62, and the upper inner expansion block fixing plate 11 and the lower inner expansion block fixing plate 12 are arranged in parallel and at intervals; the connecting shaft 20 is used for connecting the inner expansion block upper fixing plate 11 and the inner expansion block lower fixing plate 12, and the connecting shaft 20, the inner expansion block upper fixing plate 11 and the inner expansion block lower fixing plate 12 are coaxially arranged; the inner expansion blocks 30 are embedded in annular cavities among the inner expansion block upper fixing plate 11, the inner expansion block lower fixing plate 12 and the connecting shaft 20, the inner expansion blocks 30 can move along the radial direction of the connecting shaft 20, and twelve inner expansion blocks 30 are provided; the driving assembly is used for driving the inner expanding block 30 to move outwards along the radial direction of the connecting shaft 20; the spring 50 is annular, the spring 50 is embedded in the spring groove 31 formed at the end of the inner expansion block 30, and the spring 50 has a tendency of driving the inner expansion block 30 to move inwards along the radial direction of the connecting shaft 20; the inner expansion block 30 comprises a first inner expansion block 30a and a second inner expansion block 30b which are equal in number, the first inner expansion block 30a and the second inner expansion block 30b are arranged in a staggered manner, a first matching surface 32 is arranged on the first inner expansion block 30a, a second matching surface 33 matched with the first matching surface 32 is arranged on the second inner expansion block 30b, the first inner expansion block 30a is extruded in a space between two adjacent second inner expansion blocks 30b, so that the first matching surface 32 is attached to and tightly abutted against the second matching surface 33, a gap between the first inner expansion block 30a and the second inner expansion block 30b is sealed, when the driving assembly drives the first inner expansion block 30a to move outwards, the first inner expansion block 30a drives the second inner expansion block 30b to move outwards through the relative sliding of the first matching surface 32 and the second matching surface 33, so that all the inner expansion blocks 30 are arranged in the stator coil 62 to realize tensioning, and when the spring 50 drives the second inner expansion block 30b to move inwards, the second inner expansion block 30b drives the first inner expansion block 30a to move inwards through the relative sliding between the first matching surface 32 and the second matching surface 33, so that all the inner expansion blocks 30 are separated from the stator coil 62, and the retraction is realized.
The benefit that sets up like this lies in, can enough realize rising of internal expanding piece and retract back through the relative slip of first fitting surface and second fitting surface, can block up the gap between the adjacent internal expanding piece through the laminating shutoff of first fitting surface and second fitting surface again, avoids the enameled wire to get into, is difficult for damaging the enameled wire, can not produce substandard product and waste product, and the yields is high.
The angle between the first engagement surface 32 and the moving direction of the first internal expansion block 30a is very important, and if the angle is too large, the resistance to the driving of the first engagement surface 32 and the second engagement surface 33 is large, and if the angle is too small, the expansion and retraction of the internal expansion block 30 can be difficult to be realized by the relative sliding of the first engagement surface 32 and the second engagement surface 33, and the angle is preferably 40-70 °, and in this embodiment, the angle is 55 °.
In this embodiment, the outer wall of the inner expanding block 30 is a circular arc surface, and when the first inner expanding block 30a moves outwards to the limit position, the distance between the outer wall of the first inner expanding block 30a and the outer wall of the second inner expanding block 30b and the axial lead of the connecting shaft 20 is equal, so that the outer wall of the first inner expanding block 30a and the outer wall of the second inner expanding block 30b are located on the same cylindrical surface.
In order to increase the retraction force and retraction efficiency of the internal expansion block 30 and balance the moving speed of the two ends of the internal expansion block 30, in this embodiment, the two ends of the internal expansion block 30 are both provided with spring slots 31.
In this embodiment, the width of the spring groove 31 of the first inner expanding block 30a is larger than the width of the spring groove 31 of the second inner expanding block 30b.
In this embodiment, the driving assembly includes a sliding block 41, a supporting rod 42, a supporting rod fixing plate 43, and an air cylinder 44, wherein the sliding block 41 is disposed in a cavity between the first inner expanding block 30a and the connecting shaft 20, an outer wall of the sliding block 41 gradually retracts toward the upper fixing plate 11 of the inner expanding block, an inner wall of the first inner expanding block 30a is matched with an outer wall of the sliding block 41, six sliding blocks 41 are provided, each sliding block 41 corresponds to one supporting rod 42, the supporting rod 42 slidably and vertically penetrates through the lower fixing plate 12 of the inner expanding block, an end of the supporting rod 42 close to the upper fixing plate 11 of the inner expanding block is connected with the sliding block 41, when the supporting rod 42 slides, the sliding block 41 can be driven to slide along an axial direction of the connecting shaft 20, so that the outer wall of the sliding block 41 is attached to and tightly abutted against the inner wall of the first inner expanding block 30a, thereby driving the first inner expanding block 30a to move outward, and in order to realize synchronous sliding of all the sliding blocks 41, the end parts of all the support rods 42 far away from the slide block 41 are connected to the support rod fixing plate 43, the air cylinder 44 is connected to the support rod fixing plate 43, and the support rod fixing plate 43 is driven to drive the support rod 43 to axially slide, so that the slide block 41 is driven to slide, and the expansion of the internal expansion block 30 is realized.
In order to improve the stability of the sliding block 41 during sliding, in the present embodiment, the inner wall of the sliding block 41 is kept attached to the outer wall of the connecting shaft 20, and the number of the sliding blocks 41 is equal to the number of the first internal expansion blocks 30a, and the sliding blocks 41 are arranged in one-to-one correspondence with the first internal expansion blocks 30a.
Of course, the cylinder 44 could be replaced with a hydraulic cylinder as desired.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered within the scope of the present invention.
Claims (10)
1. An internal expanding stator coil shaping device comprising:
the inner expansion block fixing plate is disc-shaped and comprises an upper inner expansion block fixing plate and a lower inner expansion block fixing plate, the outer diameter of the upper inner expansion block fixing plate is smaller than the inner diameter of the stator winding, the outer diameter of the lower inner expansion block fixing plate is larger than the inner diameter of the stator winding, and the upper inner expansion block fixing plate and the lower inner expansion block fixing plate are arranged in parallel and at intervals;
the connecting shaft is used for connecting the upper fixing plate of the inner expansion block and the lower fixing plate of the inner expansion block, and the connecting shaft, the upper fixing plate of the inner expansion block and the lower fixing plate of the inner expansion block are coaxially arranged;
the inner expansion block is embedded in an annular cavity among the inner expansion block upper fixing plate, the inner expansion block lower fixing plate and the connecting shaft, and can move along the radial direction of the connecting shaft;
the driving assembly is used for driving the inner expanding block to move outwards;
the spring is annular, is embedded in a spring groove formed in the end part of the inner expansion block and has a tendency of driving the inner expansion block to move inwards;
the method is characterized in that:
the inner expansion blocks comprise first inner expansion blocks and second inner expansion blocks which are equal in number, the first inner expansion blocks and the second inner expansion blocks are arranged in a staggered mode, a first matching surface is arranged on the first inner expansion block, a second matching surface matched with the first matching surface is arranged on the second inner expansion block, the first inner expansion block is squeezed in a space between two adjacent second inner expansion blocks, the first matching surface and the second matching surface are attached and tightly abutted, gaps between the first inner expansion blocks and the second inner expansion blocks are sealed, when the driving assembly drives the first inner expansion blocks to move outwards, the first inner expansion blocks drive the second inner expansion blocks to move outwards through relative sliding of the first matching surface and the second matching surface, all the inner expansion blocks are tensioned in the stator coil, and when the spring drives the second inner expansion blocks to move inwards, the second internal expansion block drives the first internal expansion block to move inwards through the relative sliding of the first matching surface and the second matching surface, so that all the internal expansion blocks are separated from the stator coil.
2. The device for shaping an internally expanding stator coil as claimed in claim 1, wherein: the included angle between the first matching surface and the moving direction of the first internal expanding block is 40-70 degrees.
3. The device for shaping an internally expanding stator coil as claimed in claim 1, wherein: the outer wall of the inner expansion block is an arc surface, and when the first inner expansion block moves outwards to the limit position, the distance between the outer wall of the first inner expansion block and the outer wall of the second inner expansion block and the axial lead of the connecting shaft is equal.
4. The device for shaping an internally expanding stator coil as claimed in claim 1, wherein: the spring grooves are formed in the two end portions of the inner expansion block.
5. The device for shaping an internally expanding stator coil as claimed in claim 1, wherein: the width of the spring groove on the first inner expanding block is larger than that of the spring groove on the second inner expanding block.
6. The device for shaping an internally expanding stator coil as claimed in claim 1, wherein: the driving assembly comprises a sliding block arranged in a cavity between the first inner expansion block and the connecting shaft and a supporting rod vertically arranged on the lower fixing plate of the inner expansion block in a sliding manner, the outer wall of the sliding block gradually shrinks inwards towards the direction of the upper fixing plate of the inner expansion block, the inner wall of the first inner expansion block is matched with the outer wall of the sliding block, the end part of the supporting rod close to the upper fixing plate of the inner expansion block is connected with the sliding block, and when the supporting rod slides, the sliding block can be driven to slide along the axial direction of the connecting shaft, so that the outer wall of the sliding block is attached to and tightly supported against the inner wall of the first inner expansion block, and the first inner expansion block is driven to move outwards.
7. The device for shaping an internally expanding stator coil as claimed in claim 6, wherein: the inner wall of the sliding block is attached to the outer wall of the connecting shaft.
8. The device for shaping an internally expanding stator coil as claimed in claim 6, wherein: the slider has a plurality ofly, every slider corresponds one the bracing piece, all the bracing piece is kept away from the tip of slider is connected on same bracing piece fixed plate.
9. The device for shaping an internally expanding stator coil as claimed in claim 8, wherein: the driving assembly further comprises an air cylinder or a hydraulic cylinder connected with the supporting rod fixing plate.
10. The device for shaping an internally expanding stator coil as claimed in claim 8, wherein: the number of the sliding blocks is equal to that of the first internal expansion blocks, and the sliding blocks and the first internal expansion blocks are arranged in a one-to-one correspondence mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123107999.4U CN216531009U (en) | 2021-12-10 | 2021-12-10 | Internal expanding stator coil shaping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123107999.4U CN216531009U (en) | 2021-12-10 | 2021-12-10 | Internal expanding stator coil shaping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216531009U true CN216531009U (en) | 2022-05-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123107999.4U Active CN216531009U (en) | 2021-12-10 | 2021-12-10 | Internal expanding stator coil shaping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216531009U (en) |
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2021
- 2021-12-10 CN CN202123107999.4U patent/CN216531009U/en active Active
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