CN215512049U - Injection mold for realizing rectangular sine wave - Google Patents
Injection mold for realizing rectangular sine wave Download PDFInfo
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- CN215512049U CN215512049U CN202121098058.6U CN202121098058U CN215512049U CN 215512049 U CN215512049 U CN 215512049U CN 202121098058 U CN202121098058 U CN 202121098058U CN 215512049 U CN215512049 U CN 215512049U
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Abstract
The utility model discloses an injection mold for realizing rectangular sine waves, which belongs to the technical field of injection molds and comprises an oriented magnetic field, wherein an outer diameter magnetic field guide sleeve is sleeved outside the oriented magnetic field, an inner diameter magnetic sleeve is arranged inside the oriented magnetic field, a core rod is arranged at the axis position inside the inner diameter magnetic sleeve, and a molding cavity is arranged between the inner diameter magnetic sleeve and the core rod. The product of the utility model adopts the outer diameter orientation, and the high magnetic force of the sine wave is reduced by changing the waveform of the magnetic field, the high middle magnetic force is leveled and changed into the square sine wave, the frequency difference range used by customers is reduced, and the requirement of testing the duty ratio on the Hall assembly to be 0.8-1.25 is met; the performance of the product after molding can be more than 110 MT.
Description
Technical Field
The utility model belongs to the technical field of injection molds, and particularly relates to an injection mold for realizing rectangular sine waves.
Background
The existing plastic magnetic ring is mostly used for making linear induction in automobiles and household appliances, the waveform of each product is different, and has a moment sine wave, a sharp corner wave and the like, and the duty ratio of the plastic magnetic ring used for an air conditioner motor is tested on a Hall assembly to be 0.8-1.25. The waveform sine wave of the product can not meet the requirement.
The Chinese patent application No. 201710171363.5 discloses a method for solving the problem of locked rotor of a cooling water pump rotor for an electric vehicle, which aims to solve the problems of unstable starting and rotating speed and locked rotor which seriously affect the cooling effect of a cooling water pump of a new energy automobile and is characterized in that the distribution of a magnetic field of the water pump rotor is changed, namely a changed magnetic field is used for magnetizing a magnet at a corresponding position, and a magnetic waveform with a middle sinking part at the joint of a magnetic pole and a magnetic pole is formed at a high convex part; the change of the magnetic field distribution of the water pump rotor is realized through a magnetic field guide ring; the magnetic field guide ring is a cylindrical structure consisting of two or more than two magnetic conductive materials and non-magnetic conductive materials. The problem of water pump start-up stalling is solved effectively, the phenomenon of new forms of energy electric automobile cooling water pump start-up stalling is avoided, and the cooling effect of the water pump is guaranteed.
The above-mentioned patent publication describes the waveform of the product as saddle wave, but the performance is low and does not exceed 100 MT.
SUMMERY OF THE UTILITY MODEL
To solve the problems set forth in the background art described above. The utility model provides an injection mold for realizing rectangular sine waves, which has the characteristics of reducing the frequency difference range used by a client and meeting the requirement of testing the duty ratio on a Hall assembly to be 0.8-1.25.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an realize injection mold of square string ripples, includes the orientation magnetic field, and the outside cover in orientation magnetic field is equipped with external diameter magnetic field uide bushing, and the inside in orientation magnetic field is equipped with the internal diameter flux sleeve, and the axle center position of the inside of internal diameter flux sleeve is equipped with the plug, is equipped with the shaping chamber between internal diameter flux sleeve and the plug.
In order to enable the magnetic force lines to be a closed curve from an N pole to an S pole, further, the oriented magnetic field is composed of an even number of first magnetic steels and second magnetic steels which are alternately arranged and are in an annular array, the S level of the first magnetic steels is arranged upwards, and the N level of the second magnetic steels is arranged upwards.
In order to enable the first magnetic steel, the second magnetic steel and the inner diameter magnetic conduction sleeve to form a magnetic conduction loop and weaken the middle wave crest magnetic field, further, the wall thickness of the inner diameter magnetic conduction sleeve is 0.8-3mm, and the inner diameter magnetic conduction sleeve is a magnetic conduction component.
In order to prevent the magnetic field from leaking to the outer diameter, the outer diameter magnetic field guide sleeve is a non-magnetic conductive member.
In order to enable the magnetic field of the forming cavity to form a magnetic conduction loop through the core rod and weaken the middle peak magnetic field, further, the core rod is a magnetic conduction component.
Compared with the prior art, the utility model has the beneficial effects that:
1. the product of the utility model adopts the outer diameter orientation, and the high magnetic force of the sine wave is reduced by changing the waveform of the magnetic field, the high middle magnetic force is leveled and changed into the square sine wave, the frequency difference range used by customers is reduced, and the requirement of testing the duty ratio on the Hall assembly to be 0.8-1.25 is met;
2. the performance of the product after molding can be more than 110 MT.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a diagram of the magnetic field waveform of the product of the present invention;
in the figure: 1. an outer diameter magnetic field guide sleeve; 2. an orienting magnetic field; 21. a first magnetic steel; 22. a second magnetic steel; 3. an inner diameter magnetic sleeve; 4. a molding cavity; 5. and (4) a core rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-2, the present invention provides the following technical solutions: the utility model provides a realize injection mold of square string ripples, includes orientation magnetic field 2, and the outside cover in orientation magnetic field 2 is equipped with external diameter magnetic field uide bushing 1, and the inside in orientation magnetic field 2 is equipped with internal diameter flux sleeve 3, and the axle center position of the inside of internal diameter flux sleeve 3 is equipped with plug 5, is equipped with between internal diameter flux sleeve 3 and the plug 5 and becomes die cavity 4.
Specifically, the wall thickness of the inner diameter flux sleeve 3 is 0.8-3mm, preferably 1.5mm in this embodiment, and the inner diameter flux sleeve 3 is a magnetic conductive member.
By adopting the technical scheme, the outer diameter of the product with the thickness of less than 0.8 mm is easy to deform and more than 3mm, the orientation magnetic field can be greatly reduced, the inner diameter magnetic sleeve 3 is made of CB20F magnetic alloy or ASP-60, and the CB20F magnetic alloy is preferred in the embodiment. The magnetic field generator has the function that the first magnetic steel 21, the second magnetic steel 22 and the inner diameter magnetic conduction sleeve 3 form a magnetic conduction loop to weaken the middle wave crest magnetic field.
Specifically, the outer diameter magnetic field guide sleeve 1 is a non-magnetic conductive member.
By adopting the technical scheme, the material of the outer diameter magnetic field guide sleeve 1 is HPM75, stellite or NA70, and the preferred embodiment is HPM 75. The function is to prevent the magnetic field from leaking to the outer diameter.
Specifically, the core rod 5 is a magnetic conductive member.
By adopting the technical scheme, the core rod 5 is made of SKH 51. The function is to enable the magnetic field of the molding cavity 4 to form a magnetic conductive loop through the core rod 5, and weaken the middle wave crest magnetic field.
Example 2
The present embodiment is different from embodiment 1 in that: specifically, the orientation magnetic field 2 is composed of an even number of first magnetic steels 21 and second magnetic steels 22 which are alternately arranged and are in an annular array, the S-level of the first magnetic steels 21 is arranged upward, and the N-level of the second magnetic steels 22 is arranged upward.
By adopting the technical scheme, the magnetic force line is a closed curve from the N pole to the S pole.
In conclusion, the product adopts the outer diameter orientation, and the waveform of the magnetic field is changed, so that the high magnetic force of the sine wave is reduced, the high middle magnetic force is leveled and changed into the rectangular sine wave, the frequency difference range used by a customer is reduced, and the requirement of testing the duty ratio on the Hall assembly to be 0.8-1.25 is met; the performance of the product after molding can be more than 110 MT.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides an realize injection mold of square string ripples, includes orientation magnetic field, its characterized in that: an outer diameter magnetic field guide sleeve is sleeved outside the oriented magnetic field, an inner diameter magnetic conduction sleeve is arranged inside the oriented magnetic field, a core rod is arranged at the axis position inside the inner diameter magnetic conduction sleeve, and a forming cavity is arranged between the inner diameter magnetic conduction sleeve and the core rod.
2. The injection mold for realizing the rectangular sine wave according to claim 1, wherein: the orientation magnetic field is composed of even number of first magnetic steel and second magnetic steel which are alternately arranged and are in an annular array.
3. The injection mold for realizing the rectangular sine wave as claimed in claim 2, wherein: the S level of the first magnetic steel is arranged upwards, and the N level of the second magnetic steel is arranged upwards.
4. The injection mold for realizing the rectangular sine wave according to claim 1, wherein: the wall thickness of the inner diameter magnetic conduction sleeve is 0.8-3 mm.
5. The injection mold for realizing the rectangular sine wave according to claim 1, wherein: the outer diameter magnetic field guide sleeve is a non-magnetic conductive component.
6. The injection mold for realizing the rectangular sine wave according to claim 1, wherein: the inner diameter magnetic conduction sleeve is a magnetic conduction component.
7. The injection mold for realizing the rectangular sine wave according to claim 1, wherein: the core rod is a magnetic conduction component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121098058.6U CN215512049U (en) | 2021-05-21 | 2021-05-21 | Injection mold for realizing rectangular sine wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121098058.6U CN215512049U (en) | 2021-05-21 | 2021-05-21 | Injection mold for realizing rectangular sine wave |
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| Publication Number | Publication Date |
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| CN215512049U true CN215512049U (en) | 2022-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121098058.6U Active CN215512049U (en) | 2021-05-21 | 2021-05-21 | Injection mold for realizing rectangular sine wave |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114654672A (en) * | 2022-03-18 | 2022-06-24 | 宁波伊玛磁业有限公司 | Ring injection molding magnetic orientation mold |
-
2021
- 2021-05-21 CN CN202121098058.6U patent/CN215512049U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114654672A (en) * | 2022-03-18 | 2022-06-24 | 宁波伊玛磁业有限公司 | Ring injection molding magnetic orientation mold |
| CN114654672B (en) * | 2022-03-18 | 2024-04-19 | 宁波伊玛磁业有限公司 | Ring injection molding magnetic orientation die |
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