CN209830227U - Injection mold for cast aluminum of motor rotor - Google Patents
Injection mold for cast aluminum of motor rotor Download PDFInfo
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- CN209830227U CN209830227U CN201822133668.XU CN201822133668U CN209830227U CN 209830227 U CN209830227 U CN 209830227U CN 201822133668 U CN201822133668 U CN 201822133668U CN 209830227 U CN209830227 U CN 209830227U
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Abstract
The utility model discloses a motor rotor cast aluminum injection die, which comprises a die holder structure and an injection structure, wherein the die holder structure at least comprises an outer die holder and a hollow cylindrical inner die sleeve, the inner die sleeve is arranged in the outer die holder in a matching way, and the linear expansion coefficient of the material of the outer die holder is close to that of the material of the inner die sleeve; the injection structure at least comprises an injection head, and the injection head is arranged in the inner die sleeve in a matching way; the injection head and the inner die sleeve are matched to form an injection cavity for containing hot melt aluminum liquid for injection in the inner die sleeve. The utility model discloses an interior mode sleeve and outer die holder structure that linear expansion coefficient is close, when keeping effectual production machining precision, cancelled traditional asbestos cup to when simplifying technology, still reduced environmental pollution.
Description
Technical Field
The utility model relates to a cast aluminum die, especially a motor rotor cast aluminum injection mould.
Background
The cast aluminum manufacturing process of the motor rotor is a very professional manufacturing process, and the quality, the cost and the waste material treatment of the rotor mainly depend on the effectiveness of the process actions of a cast aluminum workpiece die, an injection die drawing and a die casting machine.
The process method comprises the following steps: the method comprises the steps of firstly installing a silicon steel sheet on a process shaft, placing the silicon steel sheet into an upper die, a middle die and a lower die of a workpiece, which can bear the pressure of three times of injection given by an aluminum injection press, placing hot-melt aluminum liquid at about 680 ℃ into an injection die for injection, wherein the injection die is an important component provided by equipment per se, and realizing that the aluminum liquid quickly enters a die cavity of the workpiece through the injection die and then enters blade holes of a lower die of a rotor through a hydraulic press.
The traditional method is that an asbestos cup is placed in an injection mold, then a solution is injected into the cup, and then the whole process is completed through three-stage injection by a press machine. Asbestos is used as a heat-insulating material, is low in price, has certain non-environmental protection property, is limited to be used in China at present, is not ideal to be replaced by other materials, does not solve the problem fundamentally, and has certain pollution.
Disclosure of Invention
In order to solve the problem, the utility model discloses a mould is penetrated to electric motor rotor cast aluminium pressure through adopting the close centre form sleeve of linear expansion coefficient and outer die holder structure, when keeping effectual production machining precision, has cancelled traditional asbestos cup to when simplifying technology, still reduced environmental pollution.
The utility model discloses a motor rotor cast aluminum injection die, which comprises a die holder structure and an injection structure,
the die holder structure at least comprises an outer die holder and a hollow cylindrical inner die sleeve, the inner die sleeve is arranged in the outer die holder in a matching manner, and the material of the outer die holder is close to the linear expansion coefficient of the material of the inner die sleeve;
the injection structure at least comprises an injection head, and the injection head is arranged in the inner die sleeve in a matching way;
the injection head and the inner die sleeve are matched to form an injection cavity for containing hot melt aluminum liquid for injection in the inner die sleeve.
The utility model discloses an improvement of mould is penetrated to electric motor rotor cast aluminium pressure, the outer die holder is carbon element structural steel material.
The utility model discloses an improvement of mould is penetrated to electric motor rotor cast aluminium pressure, interior die sleeve are the hot mould steel material.
The utility model discloses a motor rotor cast aluminium is pressed and is penetrated mould's improvement, presses and penetrate the structure and still include the piston, and the piston is connected to the compression head, presses to penetrate the time and promote to penetrate the head at interior die sleeve internal motion by the piston to the extrusion is pressed hot melt aluminium liquid of penetrating the intracavity and is accomplished to press and penetrate the action.
The utility model discloses a motor rotor cast aluminium is pressed and is penetrated mould's an improvement, presses and penetrates the structure and still include the retainer plate, and the retainer plate cover is established in the piston outside to be used for limiting piston and pressing the head.
The utility model discloses a motor rotor cast aluminium is pressed and is penetrated a improvement of mould, presses and penetrates the structure and still include the mount pad, and the mount pad is connected to the retainer plate for the fixed retainer plate.
The utility model discloses a mould is penetrated to electric motor rotor cast aluminium pressure improvement, pressure penetrate the structure and still include the card key, are provided with the draw-in groove corresponding to the card key on mount pad and/or the retainer plate, and mount pad and retainer plate pass through card key and draw-in groove fixed connection.
The utility model discloses an improvement of aforementioned mould equipment's structurality has realized electric motor rotor's shaping to at the processing equipment system, reduce the processing degree of difficulty and simplify the processing system, and all obtained apparent promotion in the aspect of energy-concerving and environment-protective reduction in production cost etc. the average machining efficiency of unit promotes 30-50%, and the reduction in production cost of product processing is 10-20%.
In order to obtain better rigidity and wear resistance of the inner die sleeve, particularly the inner surface of the inner die sleeve, the inner die sleeve is used as a main consumable material, and further improvement is made: the inner surface of the inner die sleeve also comprises a layered inner attachment structure, the inner attachment structure comprises a framework and a coating layer formed on the outer side of the framework, the coating layer can be assembled on the framework in a detachable assembly mode, such as riveting or mortise-tenon joint structure or screw connection, and the like,
the framework is a composite ceramic-based material lined with stainless steel material;
the coating layer is made of carbon-containing material, and the coating layer is made of high-temperature wear resistant rigid material. The internal structure of the scheme aims at the problems in various aspects such as easy abrasion, easy deformation, high maintenance difficulty and easy thermal deformation of the internal structure in the prior art, the internal structure takes a composite ceramic composite structure as a core, effective heat insulation can be achieved, the influence on the processing precision of a die caused by thermal deformation is reduced, the post-processing performance is improved through the coating layer on the premise of improving the production processing performance and the maintenance performance of the die, and the adhesion of hot-melt metal is reduced (in the injection process, part of the hot-melt metal is easy to remain on the inner surface of an internal die sleeve and adheres to the surface of the die in the form of particles or metal wires to damage the processing capacity of the die, the cleaning difficulty is increased, scratches are easy to form in subsequent processing, the efficiency of continuous production processing is influenced), and the deformation or abrasion of the die in long-term use is remarkably reduced, the use and maintenance cost is reduced, and when the internal attachment structure is formed on the inner surface of the internal die sleeve by combining a plurality of plates, the corresponding coating layer or the internal attachment structure can be directly replaced when maintenance is needed, so that the maintenance efficiency is higher, and the cost is lower.
Preferably, the ceramic-based material mainly comprises the following raw materials in percentage by weight: clay 0.15-0.18%, magnesium carbonate 2.0-3.5%, calcium carbonate 1.0-2.0%, sodium bicarbonate 1.20-1.40%, and the balance of alumina and inevitable impurities. The proper amount of clay can effectively play a role in auxiliary forming of blanks without adding other auxiliary materials in forming, has good dispersibility for magnesium carbonate, calcium carbonate, sodium bicarbonate and the like, and does not influence the performance of the materials due to excessive addition, such as the negative influence on high-temperature performance, mechanical performance and the like is controlled to be minimum. This scheme is through adopting a small amount of clay to play partial fluxing bonding effect of stereotyping at ceramic matrix material skeleton sintering, and here control clay quantity can just adjust the melting of in-process alumina to, proper amount magnesium carbonate, calcium carbonate play supplementary pore-forming simultaneously and with the cooperation reinforcing ceramic performance play a role, sodium bicarbonate is when adjusting raw materials pH environment, has mainly played the efficiency of pore-forming, and the porous ceramic material that light intensity is suitable is obtained through the raw materials cooperation.
Preferably, the raw material of the ceramic-based material also comprises at least one of carbon fiber or ceramic fiber accounting for 0.3-0.5 wt% of the total mass of the raw material, and the carbon fiber or ceramic fiber is short fiber with the length of 0.1-0.3mm and the diameter of 10-20 microns. Through the uniformly distributed fiber structure, the point supporting effect is achieved, the wear resistance and the rigidity are obviously improved, and the problem that injection marks appear on the surface of a workpiece due to the fact that long fibers are prone to fracture and remain in long-term use and influence is caused on the matching of the compression head and the inner wall of the inner die sleeve is avoided.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of an injection mold for cast aluminum of a motor rotor disclosed by the present invention;
FIG. 2, an assembled view of the embodiment shown in FIG. 1;
reference numerals: 1. the injection molding machine comprises an outer die holder 2, an inner die sleeve 3, an injection head 4, a mounting seat 5, a clamping key 6, a fixing ring 7, an injection cylinder piston 8, hot molten aluminum 9, an injection die 10, a lower workpiece die 11, a middle workpiece die 12, an upper workpiece die 13, a conveying planker 14, a workbench 15 and an injection cylinder
Detailed Description
The present invention will be further explained with reference to the following detailed description, which is to be understood as illustrative only and not as limiting the scope of the invention.
The present solution includes, but is not limited to, the following examples, and while only the innovative aspects are pointed out in the examples, the remaining portions of the respective solutions can be supplemented by any feasible prior art to form a complete embodiment.
Example 1
The motor rotor cast aluminum injection mold comprises a mold base structure and an injection structure, wherein the mold base structure at least comprises an outer mold base and a hollow cylindrical inner mold sleeve, the inner mold sleeve is arranged in the outer mold base in a matching mode, and the material of the outer mold base is close to the linear expansion coefficient of the material of the inner mold sleeve; the injection structure at least comprises an injection head, and the injection head is arranged in the inner die sleeve in a matching way; the injection head and the inner die sleeve are matched to form an injection cavity for containing hot melt aluminum liquid for injection in the inner die sleeve.
Example 2
The difference from the embodiment 1 is only that the outer die holder is made of carbon structural steel.
Example 3
The difference from the embodiment 2 is only that the inner die sleeve is made of hot die steel.
Example 4
The difference from the embodiment 3 is that the injection structure further comprises a piston, the piston is connected to the compression head, and the piston pushes the injection head to move in the inner die sleeve during injection, so that hot molten aluminum in the injection cavity is extruded to complete injection.
Example 5
The difference from the embodiment 4 is only that the injection structure further comprises a fixed ring which is sleeved outside the piston and used for limiting the piston and the injection head.
Example 6
The only difference from embodiment 5 is that the shot structure further includes a mounting seat connected to the stationary ring for fixing the stationary ring.
Example 7
The difference with embodiment 6 is only that, be provided with the draw-in groove on the mount pad corresponding to the card key, mount pad and retainer plate pass through card key and draw-in groove fixed connection. At the moment, the clamping key can be correspondingly arranged on the fixing ring, so that the occlusion of the clamping key and the clamping groove is improved, and the fixing of the mounting seat and the fixing ring is realized.
Example 8
The difference with embodiment 6 is only that, the fixing ring is provided with a clamping groove corresponding to the clamping key, and the mounting seat and the fixing ring are fixedly connected through the clamping key and the clamping groove. At the moment, the clamping key can be correspondingly arranged on the mounting seat, so that the occlusion of the clamping key and the clamping groove is improved, and the mounting seat and the fixing ring are fixed.
Example 9
The difference from the embodiment 6 is that the mounting seat and the fixing ring are provided with mutually matched clamping grooves corresponding to the clamping keys (the matched shapes correspond to the clamping keys), and the mounting seat and the fixing ring are fixedly connected through the clamping keys and the clamping grooves. The clamping key is an independent body relative to the installation seat and the fixing ring, and the installation seat and the fixing ring are fixed through occlusion of the clamping groove formed by matching the clamping key on the installation seat and the fixing ring.
The utility model discloses a structural improvement of aforementioned mould equipment has realized that the injection of the electric motor rotor of small-size low-power motor (130 motor is the example, and every batch processing is 1000, calculates the average value) is moulded to at the processing equipment system, reduce the processing degree of difficulty and simplify the processing system, and all obtain apparent promotion in the aspect of energy-concerving and environment-protective reduction in production cost etc. the average machining efficiency of unit promotes 30-50%, the production cost of product processing reduces 10-20%, and the acquisition cost of equipment then sees the rule and reduces more.
The embodiment of the utility model provides an in, adopt including but not limited to following technical scheme after, its inner surface of interior die sleeve still includes the interior additional structure of stratiform, and interior additional structure includes the coating that forms in the skeleton outside of skeleton and spiro union, and the skeleton is the composite ceramic based material who is lined with stainless steel material, and the raw materials of ceramic based material as the skeleton mainly do, wt%: clay 0.15%, magnesium carbonate 3.5%, calcium carbonate 1.2%, sodium bicarbonate 1.40%, and the balance of alumina and inevitable impurities; the coating layer is a carbon fiber layer. Compared with the previous embodiment, the service life of the product is further prolonged by about 30%, and the labor and time consumption of production and maintenance are saved by more than 30%.
The ceramic-based material, namely the foamed ceramic material in the above embodiment is mainly prepared from the following raw materials in wt%: clay (the utility model discloses in be ceramic clay) 0.15-0.18%, magnesium carbonate 2.0-3.5%, calcium carbonate 1.0-2.0%, sodium bicarbonate 1.20-1.40%, the surplus is aluminium oxide and inevitable impurity.
The composition technical scheme of the ceramic-based material in the above embodiment may also include, but is not limited to, any of the following technical schemes:
1. the ceramic-based material mainly comprises the following raw materials in percentage by weight: clay 0.15%, magnesium carbonate 3.5%, calcium carbonate 1.2%, sodium bicarbonate 1.40%, and the balance of alumina and inevitable impurities.
2. The ceramic-based material mainly comprises the following raw materials in percentage by weight: clay 0.16%, magnesium carbonate 2.0%, calcium carbonate 1.4%, sodium bicarbonate 1.30%, and the balance of alumina and inevitable impurities.
3. The ceramic-based material mainly comprises the following raw materials in percentage by weight: clay 0.17%, magnesium carbonate 3.0%, calcium carbonate 1.6%, sodium bicarbonate 1.20%, and the balance of alumina and inevitable impurities.
4. The ceramic-based material mainly comprises the following raw materials in percentage by weight: clay 0.18%, magnesium carbonate 2.5%, calcium carbonate 1.0%, sodium bicarbonate 1.25%, and the balance of alumina and inevitable impurities.
5. The ceramic-based material mainly comprises the following raw materials in percentage by weight: clay 0.155%, magnesium carbonate 2.7%, calcium carbonate 2.0%, sodium bicarbonate 1.36%, and the balance of alumina and inevitable impurities.
6. The ceramic-based material mainly comprises the following raw materials in percentage by weight: clay 0.175%, magnesium carbonate 3.2%, calcium carbonate 1.5%, sodium bicarbonate 1.27%, and the balance of alumina and inevitable impurities.
7. The ceramic-based material mainly comprises the following raw materials in percentage by weight: clay 0.165%, magnesium carbonate 2.9%, calcium carbonate 1.7%, sodium bicarbonate 1.32%, and the balance of alumina and inevitable impurities.
In the technical scheme including but not limited to the above ceramic-based materials, the total amount of impurity elements should be not higher than 0.07%, and the single composition should be not higher than 0.03%.
In contrast to the above embodiment, the difference may be any of the following cases: a. the raw material of the ceramic-based material also comprises carbon fiber accounting for 0.3-0.5 wt% of the total mass of the raw material, wherein the carbon fiber is short fiber with the length of 0.1-0.3mm and the diameter of 10-20 microns; b. the raw material of the ceramic-based material also comprises ceramic fiber accounting for 0.3-0.5 wt% of the total mass of the raw material, wherein the ceramic fiber is short fiber with the length of 0.1-0.3mm and the diameter of 10-20 microns; c. the raw material of the ceramic-based material also comprises carbon fiber and ceramic fiber accounting for 0.3-0.5 wt% of the total mass of the raw material, wherein the carbon fiber and the ceramic fiber are short fibers with the length of 0.1-0.3mm and the diameter of 10-20 microns;
in the above embodiment, the fibers are short fibers having a length of 0.1mm (which may include, but is not limited to, any of the following list: 0.2, 0.3, 0.14, 0.16, 0.17, 0.19, 0.22, 0.23, 0.25, 0.27, 0.28, 0.29, and any other value within the range of 0.1 to 0.3 mm), a diameter (maximum diameter) of 10 micrometers (which may include, but is not limited to, any of the following list: 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, and any other value within the range of 10 to 20 micrometers); the carbon fiber and the ceramic fiber (both of which may satisfy the following definition, including the case where both are present individually or together) are in a total amount of 0.3 wt% (the total amount may also be any of values including, but not limited to, 0.31 wt%, 0.32 wt%, 0.33 wt%, 0.34 wt%, 0.35 wt%, 0.36 wt%, 0.37 wt%, 0.38 wt%, 0.39 wt%, 0.40 wt%, 0.41 wt%, 0.42 wt%, 0.43 wt%, 0.44 wt%, 0.45 wt%, 0.46 wt%, 0.47 wt%, 0.48 wt%, 0.49 wt%, 0.50 wt%, and any other value within a range of 0.3 to 0.5 wt%).
Unlike the previous embodiments, the inner attachment structure is formed on the inner surface of the inner mold by combining a plurality of units (e.g., 3 or more units). At the moment, the overhauling and maintaining efficiency of the die can be improved by 5-10%, and the maintaining cost can be further reduced by 5-10%.
As shown in fig. 1 and fig. 2, after the outer die holder 1 and the inner die holder 2 of the processed injection die 9 are assembled, an injection cavity for accommodating hot-melt aluminum liquid 8 is formed by matching with the injection head 3 in the inner die holder 2, and because the linear expansion coefficients of the outer die holder 1 and the inner die holder 2 are relatively close, a core structure of the injection die with relatively good stability is formed together, and an injection cylinder 15 fixed on a worktable 14 drives an injection cylinder piston 7 during injection, so as to push the injection head 3, so that the hot-melt aluminum liquid 8 in the injection cavity enters the lower workpiece die 10, the middle workpiece die 11 and the upper workpiece die 12 to realize die casting, wherein the lower workpiece die 10, the middle workpiece die 11 and the upper workpiece die 12 are conveyed by a conveying carriage 13, and continuous injection casting is not realized repeatedly and correspondingly. The mounting seat 4, the clamping key 5 and the fixing ring 6 realize the fixed connection between the injection head 3 and the injection cylinder piston 7.
The injection die holder mainly comprises an outer die holder 1 and an inner die sleeve 2, the materials of the outer die holder and the inner die sleeve are respectively forged by high-quality carbon structural steel and hot die steel which are made of two different materials, the rough machining is carried out, the interference fit assembly is carried out, and the finish machining is carried out to meet the design requirement
The injection head part consists of an injection head 3, a mounting seat 4, a clamping key 5 and a fixing ring 6 and is connected with the injection cylinder piston.
The gap between the shot sleeve and the shot sleeve is maintained by adjusting the gap and controlling the temperature rise of the die during operation.
Firstly, the injection head and the injection seat are tested on site, respectively, the temperature of the die in each period during work is preheated before work,
the temperature was measured with a point thermometer for the experiment. The shot die prior to modification is a single piece. The gap between the injection seat and the injection head is large, and the measured value of the injection seat correspondingly changes greatly along with the change of external conditions in different working periods.
Firstly, a silicon steel sheet is assembled on a process shaft and put into an upper workpiece die 12, a middle workpiece die 11 and a lower workpiece die 10 which can bear the pressure of three times of injection given by an aluminum injection press, the hot-melt aluminum liquid at about 680 ℃ is put into an injection die diagram (1) for injection, and the injection die is an important component part provided by equipment per se, and the aluminum liquid quickly enters a workpiece die cavity through the injection die and blade holes of the lower rotor die by a hydraulic press.
Firstly, the design and improvement of the die need to consider the rotor power associated with the matching of a press machine, the maximum outer diameter of a rotor blade capable of adapting to and enough aluminum liquid to be filled, and the maximum capacity of an aluminum die and the movement stroke of an injection cylinder need to be considered
It is further contemplated that the temperature rise of the shot mold is not so great that the line rises of the two materials are close and the gap is maintained constant.
(1) Measuring the change on an unmodified injection die, wherein the temperature change is large in each injection process; the outer dimensions of which vary correspondingly considerably.
(2) After improvement, firstly, the size change of the outer die holder along with the temperature change is reduced by using a sleeve die pre-tightening mode, secondly, the temperature of the inner die holder is reduced by adopting air cooling, the temperature is controlled within a certain range, the expected effect is achieved and achieved at present,
(3) the injection die system has wide application and wide prospect in the aluminum injection process.
The embodiment of the present invention is not exhaustive in the technical scope claimed in the present invention and the technical solutions of the embodiments are equally applicable to the new technical solutions formed by equivalent replacement of a single or multiple technical features; in the embodiments of the present invention, all the parameters in the same embodiment are only an example (i.e. a feasible solution) of the technical solution, and there is no strict matching and limiting relationship between the parameters, wherein the parameters can be replaced with each other without violating the axiom and the requirements of the present invention, except for the specific statement.
The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the technical means, but also comprises the technical scheme formed by the arbitrary combination of the technical characteristics. The foregoing is a detailed description of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations are also considered as the protection scope of the present invention.
Claims (7)
1. A cast aluminum injection die for a motor rotor is characterized by comprising a die holder structure and an injection structure,
the die holder structure at least comprises an outer die holder and a hollow cylindrical inner die sleeve, wherein the inner die sleeve is arranged in the outer die holder in a matching manner, and the material of the outer die holder is close to the linear expansion coefficient of the material of the inner die sleeve;
the injection structure at least comprises an injection head, and the injection head is arranged in the inner die sleeve in a matching way;
the injection head and the inner die sleeve are matched to form an injection cavity for containing hot melt aluminum liquid for injection in the inner die sleeve.
2. The electric motor rotor cast aluminum injection mold as defined in claim 1 wherein said outer mold base is a carbon structural steel material.
3. The electric motor rotor cast aluminum injection mold as defined in claim 1 wherein said inner mold shell is hot die steel.
4. The electric motor rotor cast aluminum injection mold as defined in claim 1 wherein said injection structure further comprises a piston connected to the compression head, the piston pushing the injection head to move within the inner sleeve during injection to compress the molten aluminum melt within the injection cavity for injection.
5. The electric motor rotor cast aluminum shot die as defined in claim 4 wherein said shot structure further comprises a retainer ring disposed about said piston and adapted to restrain said piston and shot head.
6. The electric motor rotor cast aluminum shot mold as defined in claim 5 wherein said shot structure further comprises a mounting block attached to the retainer ring for securing the retainer ring.
7. The electric motor rotor cast aluminum injection mold as defined in claim 6, wherein said injection structure further comprises a snap key, said mounting seat and/or said retainer ring being provided with a snap groove corresponding to said snap key, said mounting seat and said retainer ring being fixedly connected by said snap key and said snap groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822133668.XU CN209830227U (en) | 2018-12-19 | 2018-12-19 | Injection mold for cast aluminum of motor rotor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822133668.XU CN209830227U (en) | 2018-12-19 | 2018-12-19 | Injection mold for cast aluminum of motor rotor |
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| CN209830227U true CN209830227U (en) | 2019-12-24 |
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| CN201822133668.XU Active CN209830227U (en) | 2018-12-19 | 2018-12-19 | Injection mold for cast aluminum of motor rotor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109434067A (en) * | 2018-12-19 | 2019-03-08 | 浙江振兴阿祥集团有限公司 | A kind of electric motor rotor aluminium casting injection mold |
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2018
- 2018-12-19 CN CN201822133668.XU patent/CN209830227U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109434067A (en) * | 2018-12-19 | 2019-03-08 | 浙江振兴阿祥集团有限公司 | A kind of electric motor rotor aluminium casting injection mold |
| CN109434067B (en) * | 2018-12-19 | 2024-07-26 | 浙江振兴阿祥集团有限公司 | Cast aluminum injection mold for motor rotor |
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