CN110978376A - Indexing injection molding method - Google Patents
Indexing injection molding method Download PDFInfo
- Publication number
- CN110978376A CN110978376A CN201911380619.9A CN201911380619A CN110978376A CN 110978376 A CN110978376 A CN 110978376A CN 201911380619 A CN201911380619 A CN 201911380619A CN 110978376 A CN110978376 A CN 110978376A
- Authority
- CN
- China
- Prior art keywords
- injection molding
- rotor
- servo
- holes
- moulding plastics
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/03—Injection moulding apparatus
- B29C45/04—Injection moulding apparatus using movable moulds or mould halves
- B29C45/06—Injection moulding apparatus using movable moulds or mould halves mounted on a turntable, i.e. on a rotating support having a rotating axis parallel to the mould opening, closing or clamping direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
- B29C45/14344—Moulding in or through a hole in the article, e.g. outsert moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
Abstract
The invention provides an indexing injection molding method, which is used for grouping injection molding holes distributed on the circumference of a rotor for injection molding, so that the position of magnetic steel in a large-stack-thickness rotor is stable and reliable, the production efficiency is improved, and the injection molding cost is reduced. Treat that the top of the rotor of moulding plastics all distributes and encircle cloth has M injection molding holes, the rotor that will treat moulding plastics is arranged in the die cavity of lower mould, the discharge gate of moulding plastics of last mould aims at L injection molding holes that set up in succession and arranges, wherein M is NxL, servo carousel is arranged in to the bottom of lower mould, drive servo carousel through servo motor drive and rotate, accomplish moulding plastics to L injection molding holes of single, later servo motor circulation corresponds predetermines turned angle, carry out the injection moulding of next a set of L injection molding holes, die sinking, take out the rotor after accomplishing all injection molding holes at rotor top.
Description
Technical Field
The invention relates to the technical field of motor integrated structures, in particular to a graduated injection molding method.
Background
The driving motor is one of three major parts of an electric automobile, and the stability and the reliability of the motor run through each link of the design and the manufacture of the motor; the magnetic steel with strong magnetism is embedded in the rotor to form a rotor magnetic field, the position of the magnetic steel in the rotor needs to be fixed, and the reliability of the fixation directly influences the stability of the magnetic field of the rotor, so that the performance of the motor is influenced; the existing injection molding process realizes the fixation of the magnetic steel by filling nylon materials in gaps of rotor magnetic steel embedding holes.
However, the existing rotor injection molding process cannot be used for a large-stack-thickness rotor, because the injection molding holes of the large-stack-thickness rotor are long, the amount of fillers is large, and the large-stack-thickness rotor injection molding process is difficult to realize through traditional integral injection molding, so that the injection molding process of the large-stack-thickness rotor needs to additionally arrange a process flow, needs to assist a plurality of tools, increases the design and manufacturing cost, and has the disadvantages of complex process flow, high manufacturing cost and long manufacturing period.
Disclosure of Invention
Aiming at the problems, the invention provides an indexing injection molding method, which is used for grouping injection molding holes distributed on the circumference of a rotor in a circular manner for injection molding, so that the position of magnetic steel in a large-lamination-thickness rotor is stable and reliable, the production efficiency is improved, and the injection molding cost is reduced.
An indexing injection molding method is characterized in that: treat that the top of the rotor of moulding plastics all distributes and encircle cloth has M injection molding holes, the rotor that will treat moulding plastics is arranged in the die cavity of lower mould, the discharge gate of moulding plastics of last mould aims at L injection molding holes that set up in succession and arranges, wherein M is NxL, servo carousel is arranged in to the bottom of lower mould, drive servo carousel through servo motor drive and rotate, accomplish moulding plastics to L injection molding holes of single, later servo motor circulation corresponds predetermines turned angle, carry out the injection moulding of next a set of L injection molding holes, die sinking, take out the rotor after accomplishing all injection molding holes at rotor top.
It is further characterized in that:
the feeding port of the upper die is arranged on the side part, the injection molding material barrel is arranged on one side of the upper die, and the discharging end of the injection molding material barrel is arranged towards or away from the feeding port through the sliding seat, so that the material of the injection molding material barrel is convenient to add, and the pressure feeding module can be timely and quickly cut off to perform servo feeding;
the injection molding discharge port of the upper mold is specifically L injection molding discharge ports which are arranged in a profiling mode corresponding to each group of L injection molding holes, 1/N of holes of the upper mold corresponding to the lower mold are filled during each injection molding, then the injection molding pressure is stopped, the upper mold is released, the servo motor drives the servo turntable to rotate for a set angle, the rotor is driven to rotate to the next group of L injection molding holes, the mold is closed again for injection molding until the injection molding is completed for one cycle, the injection molding is stopped, and the mold is released;
the servo turntable is connected with the servo motor through a transmission gear in a meshed mode, the upper portion of the servo motor is provided with the transmission gear, the transmission gear is connected with the peripheral transmission gear of the servo turntable in a meshed mode, a rotating shaft is arranged at the center of the servo turntable, the servo turntable rotates around the rotating shaft under the driving of the servo motor, and the servo turntable is guaranteed to be simple and reliable in transmission structure.
After the technical scheme is adopted, the rotor with large stack thickness is filled with a large amount of nylon materials, the filling hole is long, the material storage amount required by integral injection molding is large, the injection pressure is large, the filling hole on a workpiece is divided into N equal parts, 1/N hole in the workpiece is filled by injection molding each time, in the actual injection molding process, the rotor is driven to rotate by the servo turntable, and indexing injection molding is carried out, so that the problem that the long injection hole cannot be met by the traditional injection molding and the large injection molding amount of the workpiece is difficult to inject is solved, the servo turntable drives the injection molding lower die to rotate, the indexing accuracy is ensured, compared with the traditional glue injection molding process, the glue curing time is saved, the trouble of glue overflow is; the injection molding is relatively uniform, and the injection molded workpiece is compact, so that the dynamic balance of the workpiece is facilitated; the injection molding holes distributed on the circumference of the rotor are grouped for injection molding, so that the position of the magnetic steel in the large-stack-thickness rotor is stable and reliable, the production efficiency is improved, and the injection molding cost is reduced.
Drawings
FIG. 1 is a schematic diagram of a front view structure of a corresponding tool of the present invention;
FIG. 2 is a schematic, diagrammatic side view of the structure of FIG. 1;
the names corresponding to the sequence numbers in the figure are as follows:
the device comprises a lower die 1, an upper die 2, a servo turntable 3, a feeding port 21 and an injection molding material cylinder 4.
Detailed Description
An index injection molding method, as shown in fig. 1-2: treat that the top of the rotor of moulding plastics all distributes and encircle cloth has M injection molding hole, the rotor that will treat moulding plastics is arranged in the die cavity of lower mould 1, it aims at L injection molding hole that sets up in succession to go up the discharge gate of moulding plastics of mould 2 and arranges, wherein M is NxL, servo carousel 3 is arranged in to the bottom of lower mould 1, drive servo carousel 3 through servo motor drive and rotate, accomplish the moulding plastics to L injection molding hole of single, later servo motor circulation corresponds predetermines turned angle, carry out the injection moulding of a set of L injection molding hole next, the die sinking, take out the rotor after accomplishing all injection molding hole at rotor top.
The feeding port 21 of the upper die 2 is arranged on the side part, the injection molding barrel 4 is arranged on one side of the upper die 2, and the discharging end of the injection molding barrel 4 is arranged towards or away from the feeding port through a sliding seat, so that the material of the injection molding barrel 4 is convenient to add, and the pressure feeding module can be cut off timely and quickly to perform servo feeding;
the injection molding discharge port of the upper mold 2 is specifically L injection molding discharge ports which are arranged in a profiling mode corresponding to each group of L injection molding holes, 1/N of holes of the upper mold corresponding to the lower mold are filled during each injection molding, then the injection molding pressure is stopped, the upper mold 2 is released, the servo motor drives the servo turntable 3 to rotate for a set angle, the rotor is driven to rotate to the next group of L injection molding holes, the mold is closed again for injection molding until the injection molding is completed for one cycle, the injection molding is stopped, and the mold is released;
during the concrete implementation, servo carousel passes through drive gear meshing connection servo motor, and servo motor's upper portion is provided with drive gear, and the periphery driving gear of servo carousel is connected in the drive gear meshing, and servo carousel's center is provided with the pivot, and servo carousel rotates round the pivot under servo motor's drive, and it ensures that transmission structure is simple reliable.
In the specific embodiment, the top of the rotor to be injection-molded is provided with 48 injection molding holes, the rotor to be injection-molded is placed in a cavity of a lower mold, an injection molding discharge port of an upper mold is aligned with 4 injection molding holes which are continuously arranged, the bottom of the lower mold is placed on a servo turntable, the servo turntable is driven to rotate through a servo motor, injection molding of 4 injection molding holes at a single time is completed, then the servo motor circularly corresponds to a preset rotation angle, injection molding of 4 injection molding holes at the next group is carried out, and after 12 times of circulation, mold opening and rotor taking out are carried out until injection molding of all injection molding holes at the top of the rotor is completed.
The working principle is as follows, the rotor with large stack thickness is filled with a large amount of nylon, the filling hole is long, the storage amount required by integral injection molding is large, the injection pressure is large, the filling hole on a workpiece is divided into N equal parts, 1/N hole in the workpiece is filled by injection molding each time, in the actual injection molding process, the rotor is driven to rotate by a servo turntable, and indexing injection molding is carried out, so that the problem that the long injection hole cannot be met by the traditional injection molding and the large injection molding amount of the workpiece is difficult to inject is solved, the servo turntable drives an injection molding lower die to rotate, the indexing accuracy is ensured, compared with the traditional glue injection molding process, the glue curing time is saved, the trouble of glue overflow is eliminated; and the injection molding is relatively uniform, and the injection molded workpiece is compact, thereby being beneficial to the dynamic balance of the workpiece.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. An indexing injection molding method is characterized in that: treat that the top of the rotor of moulding plastics all distributes and encircle cloth has M injection molding holes, the rotor that will treat moulding plastics is arranged in the die cavity of lower mould, the discharge gate of moulding plastics of last mould aims at L injection molding holes that set up in succession and arranges, wherein M is NxL, servo carousel is arranged in to the bottom of lower mould, drive servo carousel through servo motor drive and rotate, accomplish moulding plastics to L injection molding holes of single, later servo motor circulation corresponds predetermines turned angle, carry out the injection moulding of next a set of L injection molding holes, die sinking, take out the rotor after accomplishing all injection molding holes at rotor top.
2. An injection molding method according to claim 1, wherein: the pan feeding mouth that will go up the mould sets up in the lateral part, arranges the feed cylinder of moulding plastics in the one side of last mould, and the discharge end of annotating the plastic cylinder passes through the slide orientation/or keeps away from the pan feeding mouth and arranges, and it makes the material of annotating the plastic cylinder add conveniently, and can in time cut off pressure feed module fast, carry out servo feed.
3. An index injection molding method as claimed in claim 2, wherein: the injection molding discharge port of the upper mold is specifically L injection molding discharge ports which are arranged corresponding to each group of L injection molding holes in a copying mode, 1/N of holes of the upper mold corresponding to the lower mold are filled when injection molding is carried out each time, then injection molding pressure stops, the upper mold is released, the servo motor drives the servo turntable to rotate for a set angle, the rotor is driven to rotate to the next group of L injection molding holes, mold closing and injection molding are carried out again until the injection molding is completed for a cycle, injection molding stops, and the mold is released.
4. An index injection molding method as claimed in claim 3, wherein: the servo turntable is connected with the servo motor through a transmission gear in a meshed mode, the transmission gear is arranged on the upper portion of the servo motor and connected with peripheral transmission teeth of the servo turntable in a meshed mode, a rotating shaft is arranged at the center of the servo turntable, and the servo turntable rotates around the rotating shaft under the driving of the servo motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911380619.9A CN110978376A (en) | 2019-12-27 | 2019-12-27 | Indexing injection molding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911380619.9A CN110978376A (en) | 2019-12-27 | 2019-12-27 | Indexing injection molding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110978376A true CN110978376A (en) | 2020-04-10 |
Family
ID=70078176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911380619.9A Pending CN110978376A (en) | 2019-12-27 | 2019-12-27 | Indexing injection molding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110978376A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11909268B2 (en) | 2021-03-11 | 2024-02-20 | ZF Active Safety US Inc. | Integrated rotor |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7906091A (en) * | 1978-08-12 | 1980-02-14 | Yoshida Kogyo Kk | Injection molding machine. |
| US4726757A (en) * | 1984-08-13 | 1988-02-23 | The World Health Organisation | Moulding apparatus |
| JP2004056902A (en) * | 2002-07-18 | 2004-02-19 | Tamagawa Seiki Co Ltd | Stator for revolution detector, and its manufacturing method |
| CN101490928A (en) * | 2006-07-10 | 2009-07-22 | 丰田自动车株式会社 | IPM rotor, IPM rotor manufacturing method and IPM rotor manufacturing apparatus |
| JP5109260B2 (en) * | 2006-02-10 | 2012-12-26 | トヨタ自動車株式会社 | Rotor, method for manufacturing the same, and electric vehicle |
| CN102950696A (en) * | 2011-08-16 | 2013-03-06 | 博创机械股份有限公司 | In-mold multi-station injection molding machine |
| CN202922855U (en) * | 2012-11-29 | 2013-05-08 | 青岛佳友模具科技有限公司 | Rotary injection molding device |
| JP3202444U (en) * | 2015-11-24 | 2016-02-04 | 樺欽機械廠有限公司 | Shaft type turntable positioning device for injection molding machines |
| CN107530927A (en) * | 2015-05-14 | 2018-01-02 | 爱信艾达株式会社 | Resin impregnation process |
| CN107852058A (en) * | 2015-08-10 | 2018-03-27 | 爱信艾达株式会社 | insulating resin covering method and stator |
-
2019
- 2019-12-27 CN CN201911380619.9A patent/CN110978376A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7906091A (en) * | 1978-08-12 | 1980-02-14 | Yoshida Kogyo Kk | Injection molding machine. |
| US4726757A (en) * | 1984-08-13 | 1988-02-23 | The World Health Organisation | Moulding apparatus |
| JP2004056902A (en) * | 2002-07-18 | 2004-02-19 | Tamagawa Seiki Co Ltd | Stator for revolution detector, and its manufacturing method |
| JP5109260B2 (en) * | 2006-02-10 | 2012-12-26 | トヨタ自動車株式会社 | Rotor, method for manufacturing the same, and electric vehicle |
| CN101490928A (en) * | 2006-07-10 | 2009-07-22 | 丰田自动车株式会社 | IPM rotor, IPM rotor manufacturing method and IPM rotor manufacturing apparatus |
| CN102950696A (en) * | 2011-08-16 | 2013-03-06 | 博创机械股份有限公司 | In-mold multi-station injection molding machine |
| CN202922855U (en) * | 2012-11-29 | 2013-05-08 | 青岛佳友模具科技有限公司 | Rotary injection molding device |
| CN107530927A (en) * | 2015-05-14 | 2018-01-02 | 爱信艾达株式会社 | Resin impregnation process |
| CN107852058A (en) * | 2015-08-10 | 2018-03-27 | 爱信艾达株式会社 | insulating resin covering method and stator |
| JP3202444U (en) * | 2015-11-24 | 2016-02-04 | 樺欽機械廠有限公司 | Shaft type turntable positioning device for injection molding machines |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11909268B2 (en) | 2021-03-11 | 2024-02-20 | ZF Active Safety US Inc. | Integrated rotor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4865726B2 (en) | Manufacturing method of tire tread | |
| CN110978376A (en) | Indexing injection molding method | |
| CN202895622U (en) | Injection molding mold | |
| CN208290358U (en) | A kind of mold being molded bottle cap | |
| CN107901339B (en) | Injection mold | |
| CN210705846U (en) | Precise worm multi-cavity linkage demolding injection mold | |
| CN101920547A (en) | Screw-free plastic disc type rotary injection method and device | |
| CN211492068U (en) | Intermittent driving turntable mechanism of brick press | |
| CN1846964A (en) | Vertical injection molding machine | |
| CN215283159U (en) | Multi-cavity forming die structure | |
| CN202241825U (en) | Mould for bicolor feeding bottle caps | |
| CN209987324U (en) | Slider thread-removing injection mold | |
| CN202895623U (en) | Rotary demolding mechanism | |
| CN102909821B (en) | Circular-truncated-cone injection bonding machine | |
| CN210590229U (en) | Rotary injection mold | |
| CN209755976U (en) | Bottle cap injection mold | |
| CN210910974U (en) | Double-color mold | |
| CN210910888U (en) | Pouring device of lens pouring machine | |
| CN101559642A (en) | Novel injection device for injection molding machine | |
| CN215242510U (en) | Injection mold is used in processing of disjunctor formula silicon rubber button | |
| CN207156315U (en) | Injection machine | |
| CN214726224U (en) | Demolding structure with internal thread structure for injection molding part | |
| CN215825806U (en) | Material device is annotated to high-efficient carousel of clear double-colored injection molding machine | |
| CN211917559U (en) | Quick-forming precise mobile phone mold | |
| CN201446664U (en) | Novel injection device for injection machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200410 |
|
| RJ01 | Rejection of invention patent application after publication |