CN214266331U - Coreless stator filling and sealing mold suitable for slotless and brushless torque motor - Google Patents
Coreless stator filling and sealing mold suitable for slotless and brushless torque motor Download PDFInfo
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- CN214266331U CN214266331U CN202023098878.3U CN202023098878U CN214266331U CN 214266331 U CN214266331 U CN 214266331U CN 202023098878 U CN202023098878 U CN 202023098878U CN 214266331 U CN214266331 U CN 214266331U
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Abstract
A coreless stator filling and sealing mould suitable for a slotless brushless torque motor comprises an upper mould and a lower mould, wherein a coreless stator to be filled and sealed is sleeved on a mandrel, the upper mould and the lower mould are respectively supported and arranged on the upper end surface and the lower end surface of the coreless stator, and a feeding cavity is arranged above the upper mould; the lower die is arranged in a split mode, the lower die is detachably spliced and fixed, discrete wire outlet grooves are formed in the lower die, and lead wires are led out through the wire outlet grooves. The utility model discloses a components of a whole that can function independently press from both sides the line is realized to the lower mould that the components of a whole that can function independently set up, and operating personnel only need put into corresponding wire groove with every lead wire under visual prerequisite, then the concatenation is fixed can guarantee not receive the damage when the lead wire installation, as long as unpack the lower mould apart during the drawing of patterns, take out the lead wire can. The utility model discloses can avoid threading into around the winding and wear out the wire hole and cause the line skin damage, raise the efficiency, avoid artifical sealing compound material volume to the influence of embedment quality, also avoid the production of many materials and scarce material phenomenon, need not clear up the unnecessary sizing material of outlet.
Description
Technical Field
The utility model relates to a motor stator forming die, concretely relates to coreless stator embedment mould suitable for slotless brushless torque motor.
Background
In order to eliminate the cogging effect, a motor stator adopts a hollow cup (slotless) scheme, and in the hollow cup scheme, a hollow cup winding, a stator core and a machine shell which are insulated and cured are encapsulated into a whole in a vacuum manner to form a hollow cup (slotless and brushless) stator with higher strength. The hollow cup stator of the slotless brushless torque motor is an axial outlet, which means that the encapsulation surface needs to be provided with a lead wire position. The traditional stator potting mold needs to be provided with a wire hole on the molding surface of the mold, and lead wires penetrate out of the mold. However, since the wire outlet hole of the mold is larger than the diameter of the lead wire, a special potting sealing compound is needed to seal the wire outlet hole. Although the encapsulating mold with the structure solves the encapsulating leakage problem of the axial outgoing line of the hollow cup stator, the encapsulating mold has the following defects: (1) the special encapsulation sealing glue needs a certain natural curing time due to the limitation of material characteristics, and the encapsulation efficiency is reduced. (2) The lead wire is pulled to the outside of the encapsulating mold in a threading mode, and the orifice of the wire outlet hole of the mold rubs the surface of the lead wire to generate the damage of the skin of the lead wire. (3) The sealing glue plugging process is purely manual operation, and the glue amount cannot be accurately controlled. The phenomenon that sealing glue enters the forming surface of a workpiece along a wire outlet hole to cause the surface of the workpiece to be starved is easily caused by excessive sealing glue; if the sealing compound is less, the sealing compound flows out along the wire outlet hole, so that the material is lacked or the root of the lead wire generates excessive glue. The redundant sizing material has high hardness and is difficult to clean, and the lead wires are easy to damage.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to above-mentioned prior art well core cup stator embedment operation difficulty, machining efficiency and quality are difficult to control's problem provides a core cup stator embedment mould suitable for slotless brushless torque motor, and the easy operation is efficient, does not need the remaining glue of clearance, can ensure embedment surface flawless, and the lead wire is not damaged.
In order to achieve the above object, the present invention provides the following technical solutions:
a coreless stator filling and sealing mould suitable for a slotless brushless torque motor comprises an upper mould and a lower mould, wherein a coreless stator to be filled and sealed is sleeved on a mandrel, the upper mould and the lower mould are respectively supported and arranged on the upper end surface and the lower end surface of the coreless stator, and a feeding cavity is arranged above the upper mould; the lower die is arranged in a split mode, the lower die is detachably spliced and fixed, discrete wire outlet grooves are formed in the lower die, and lead wires are led out through the wire outlet grooves.
Preferably, the lower die is formed by splicing a first lower die and a second lower die; the thickness of the first lower die is smaller than that of the second lower die, and the horizontal width of the first lower die can extend to the position below the outlet position of the coreless stator.
Preferably, the first lower die and the second lower die are connected through a horizontally arranged set screw.
Preferably, the second lower die is connected with the upper die at a position outside the splicing area through an adjusting screw.
Preferably, four wire outlet grooves are formed in the lower die, and the lead wires can vertically downwards penetrate through the second lower die to enter the first lower die through the wire outlet grooves and are horizontally outwards led out of the first lower die.
Preferably, the gap between the outlet grooves is 0.03mm-0.05 mm.
Preferably, the first lower die and the second lower die are spliced after being aligned by a positioning pin.
Preferably, the matching part of the lead wire and the outlet hole is sealed and lubricated by silicone grease.
Compared with the prior art, the utility model discloses following technological effect:
the mode that the components of a whole that can function independently presss from both sides the line is realized to the lower mould that adopts the components of a whole that can function independently setting, and operating personnel only need put into corresponding outlet groove with every lead wire under visual prerequisite, then the concatenation is fixed can guarantee that lead wire is not damaged when installing, as long as unpack the lower mould apart during the drawing of patterns, take out lead wire can. The utility model discloses can avoid threading into around the line and wear out the wire hole and cause the line skin damage, utilize this embedment mould can reduce process time, improved efficiency, avoid artifical sealing compound material volume to the influence of embedment quality, also avoid the production of extra charge and starved material phenomenon; meanwhile, the excessive rubber material at the wire outlet does not need to be cleaned, and the risk of cleaning and damaging the lead wire is eliminated.
Further, the utility model discloses lead wire and wire hole cooperation department seal and lubricate through the silicone grease, replace special embedment sealing compound to seal the wire hole, combine the sealed and lubricated characteristic of heat conduction silicone grease, realize sealed and lubricated to the double-layered line department.
Drawings
FIG. 1 is a schematic diagram of a coreless stator structure of a slotless brushless torque motor;
FIG. 2 is a sectional view of the structure of the coreless stator potting mold of the present invention;
FIG. 3 is a top view of the structure of the coreless stator potting mold of the present invention;
in the drawings: 11-a stator winding; 12-a stator core; 13-a housing; 14-lead wires; 15-special potting material; 1-a first lower die; 2-a second lower die; 3-a mandrel; 4-upper mould; 5-feeding cavity.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the slotless and brushless torque motor is a split structure and is composed of a hollow cup stator and a rotor. The hollow cup stator consists of a stator winding 11, a stator core 12, a machine shell 13, a lead wire 14 and a special potting material 15.
Referring to fig. 2 and 3, the utility model discloses a coreless stator embedment mould suitable for slotless brushless torque motor, including upper die 4 and lower mould, the coreless stator that needs embedment is nested on dabber 3, upper die 4 and lower mould support respectively to set up on upper and lower two terminal surfaces of coreless stator, set up the feeding chamber 5 above upper die 4; the lower die is arranged in a split manner and detachably spliced and fixed, and the lower die is formed by splicing a first lower die 1 and a second lower die 2; the thickness of the first lower die 1 is smaller than that of the second lower die 2, and the horizontal width of the first lower die 1 can extend to the position below the coil outlet position of the coreless stator. The first lower die 1 and the second lower die 2 are connected through a horizontally arranged set screw. The lower die is provided with a discrete wire outlet groove, and the lead wire is led out through the wire outlet groove.
The second lower die 2 is connected to the upper die 4 at a position outside the splicing region by means of adjusting screws. Four wire outlet grooves are formed in the lower die, and lead wires can vertically downwards penetrate through the second lower die 2 to enter the first lower die 1 through the wire outlet grooves and are horizontally outwards led out of the first lower die 1. The gap of the outlet groove is 0.03mm-0.05 mm. The first lower die 1 and the second lower die 2 are spliced after being aligned by a positioning pin. The matching part of the lead wire and the wire outlet hole is sealed and lubricated by silicone grease.
The difficulty of the slotless and brushless torque motor with the structure is that lead wires need to be axially led out, and the lead wires are AF-1 type 0.06mm 24 lapped wires. The wrapping wire skin is easy to be damaged by galling due to abrasion. The original encapsulation mould adopts a large-hole outgoing line, the lapping line passes through the hole and penetrates out after encapsulation, and the line skin can be damaged. In order to avoid material leakage, special encapsulation return 586 plugging glue is used to plug the wire hole and the wire groove. The utility model discloses with the mode that original macropore was qualified for the next round of competitions, the change is 4 little wire holes, every wire hole all with a lead wire driving fit, the control clearance is within 0.03mm-0.05mm, replaces the embedment sealing compound to seal and lubricate in lead wire and wire hole cooperation department with high temperature resistant silicone grease. The utility model discloses still take the forming die lower mould that will draw the line part to cut apart and be divided into first lower mould 1 and 2 two parts of second lower mould, operating personnel only need put into corresponding wire groove with every draw line under visual prerequisite, then utilize the locating pin to lead and just pack into second half mould, with the screw-up, can guarantee not receive the damage when drawing the line and packing into. When in demoulding, only the fastening screw needs to be loosened, the first lower die 1 and the second lower die 2 are separated, and the lead wire is taken out.
Utilize the utility model discloses an embedment mould has guaranteed that the terminal surface of embedment material levels, does not have defects such as scarce material, has guaranteed simultaneously that the lead wire root does not have gluey protrusion, has avoided the lead wire damage risk that clearance embedment material brought. The utility model discloses a diameter distribution of wire outgoing groove on first lower mould 1 and second lower mould 2 is slightly different, and the inclined to one side second lower mould 2 distance of central line is 0.1mm, leans on line skin self elastic deformation to regularly put into second lower mould 2 with the lead wire, can guarantee that the lead wire can not remove or scurry out, packs into first lower mould 1 immediately, with holding screw tight, avoids making a round trip to wear to draw the lead wire in the aperture and causes the line skin to bore hair or damage.
Utilize the utility model discloses a concrete embedment process as follows:
and (3) loading the stator assembly to be encapsulated into an encapsulating mold, and putting the stator assembly and the encapsulating mold into a drying box with circulating ventilation for preheating. After the epoxy heat-conducting encapsulating material is fully and uniformly stirred, the epoxy heat-conducting encapsulating material is placed into a vacuum drying oven for vacuumizing so as to eliminate bubbles in the encapsulating material, and after the encapsulating material is processed, the epoxy heat-conducting encapsulating material is immediately poured into a preheated mold and a workpiece for vacuumizing so that the encapsulating material can fill all gaps between the stator windings 11 as much as possible but cannot leak out of the encapsulated stator. And finally heating and curing. After potting, the coreless stator winding 11, the stator core 12 and the housing 13 form a stator which is as firm as a slotted brushless motor and has an attractive appearance.
The utility model discloses can avoid threading into around the winding and wear out the wire hole and cause the line skin damage, optimize embedment mould structure simultaneously, replace special embedment sealing compound with high temperature resistant silicone grease and seal the wire hole, reduce process time, improve efficiency. The utility model discloses avoided artifical sealing compound volume to the influence of embedment quality, avoided the production of many materials and starved for the phenomenon. Use the utility model discloses an embedment mould does not need the unnecessary sizing material of clearance outlet, gets rid of the risk that the lead wire clearance damaged.
The above-mentioned embodiments are only preferred embodiments of the present invention, and it should be understood by those skilled in the art that the present invention can be modified and replaced by other simple modifications and replacements without departing from the spirit and principle of the present invention, and these modifications and replacements also fall within the protection scope of the appended claims.
Claims (8)
1. The utility model provides a coreless stator embedment mould suitable for slotless brushless torque motor which characterized in that: the filling machine comprises an upper die (4) and a lower die, wherein a hollow cup stator to be filled and sealed is sleeved on a mandrel (3), the upper die (4) and the lower die are respectively supported and arranged on the upper end surface and the lower end surface of the hollow cup stator, and a feeding cavity (5) is arranged above the upper die (4); the lower die is arranged in a split mode, the lower die is detachably spliced and fixed, discrete wire outlet grooves are formed in the lower die, and lead wires are led out through the wire outlet grooves.
2. The coreless, stator potting mold adapted for use in a slotless, brushless torque motor of claim 1, wherein: the lower die is formed by splicing a first lower die (1) and a second lower die (2); the thickness of first lower mould (1) is less than second lower mould (2), and the horizontal width of first lower mould (1) can extend to the below of coreless stator position of being qualified for the next round of competitions.
3. The coreless, stator potting mold adapted for use in a slotless, brushless torque motor of claim 2, wherein: the first lower die (1) and the second lower die (2) are connected through a horizontally arranged set screw in a penetrating manner.
4. The coreless, stator potting mold adapted for use in a slotless, brushless torque motor of claim 2, wherein: the second lower die (2) is connected with the upper die (4) through an adjusting screw at a position outside the splicing area.
5. The coreless, stator potting mold adapted for use in a slotless, brushless torque motor of claim 2, wherein: the lower die is provided with four wire outlet grooves, and lead wires can vertically downwards penetrate through the second lower die (2) to enter the first lower die (1) through the wire outlet grooves and are horizontally outwards led out from the first lower die (1).
6. The coreless stator potting mold adapted for use in a slotless, brushless torque motor of claim 5, wherein:
the gap of the wire outlet groove is 0.03mm-0.05 mm.
7. The coreless, stator potting mold adapted for use in a slotless, brushless torque motor of claim 2, wherein:
the first lower die (1) and the second lower die (2) are spliced after being aligned by the positioning pins.
8. The coreless, stator potting mold adapted for use in a slotless, brushless torque motor of claim 1, wherein:
the matching part of the lead wire and the wire outlet hole is sealed and lubricated by silicone grease.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023098878.3U CN214266331U (en) | 2020-12-21 | 2020-12-21 | Coreless stator filling and sealing mold suitable for slotless and brushless torque motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023098878.3U CN214266331U (en) | 2020-12-21 | 2020-12-21 | Coreless stator filling and sealing mold suitable for slotless and brushless torque motor |
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| Publication Number | Publication Date |
|---|---|
| CN214266331U true CN214266331U (en) | 2021-09-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023098878.3U Active CN214266331U (en) | 2020-12-21 | 2020-12-21 | Coreless stator filling and sealing mold suitable for slotless and brushless torque motor |
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| CN (1) | CN214266331U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116345807A (en) * | 2023-05-30 | 2023-06-27 | 苏州心岭迈德医疗科技有限公司 | Filling and sealing method of hollow cup motor, filling and sealing tool and hollow cup motor |
-
2020
- 2020-12-21 CN CN202023098878.3U patent/CN214266331U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116345807A (en) * | 2023-05-30 | 2023-06-27 | 苏州心岭迈德医疗科技有限公司 | Filling and sealing method of hollow cup motor, filling and sealing tool and hollow cup motor |
| CN116345807B (en) * | 2023-05-30 | 2023-07-21 | 苏州心岭迈德医疗科技有限公司 | Filling and sealing method of hollow cup motor, filling and sealing tool and hollow cup motor |
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| GR01 | Patent grant | ||
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Address after: 710000 No.2 Taoyuan West Road, Lianhu District, Xi'an City, Shaanxi Province Patentee after: Xi'an micromotor Research Institute Co.,Ltd. Address before: 710000 No.2 Taoyuan West Road, Lianhu District, Xi'an City, Shaanxi Province Patentee before: XI'AN MICROMOTOR Research Institute |
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| CP01 | Change in the name or title of a patent holder |