CN113510939A - Diaphragm type lens hood forming die - Google Patents
Diaphragm type lens hood forming die Download PDFInfo
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- CN113510939A CN113510939A CN202110913988.0A CN202110913988A CN113510939A CN 113510939 A CN113510939 A CN 113510939A CN 202110913988 A CN202110913988 A CN 202110913988A CN 113510939 A CN113510939 A CN 113510939A
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- diaphragm
- core mold
- mold
- plate
- positioning plate
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- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
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- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
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- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides a diaphragm type lens hood forming die which comprises a base, a main body core die, a cover plate and a plurality of diaphragm assemblies, wherein the base is provided with a plurality of light-shielding holes; the diaphragm assembly comprises a positioning plate and a diaphragm core mold, and the diaphragm core mold is arranged on the positioning plate; the cover plate and the base are respectively arranged at two ends of the main body core mould, the plurality of diaphragm assemblies are arranged on the main body core mould layer by layer from top to bottom, and the plurality of diaphragm assemblies are positioned between the cover plate and the base; the diaphragm core mould of each layer of diaphragm assembly is connected with the positioning plate of the adjacent lower layer diaphragm assembly, and the diaphragm core mould is connected and arranged on the main body core mould; the positioning plate of the diaphragm assembly close to the cover plate is connected and arranged on the cover plate, and the positioning plate of the diaphragm assembly close to the base is connected and arranged on the base. The invention can ensure higher diaphragm size precision and position precision.
Description
Technical Field
The invention relates to the technical field of composite material forming, in particular to a diaphragm type light shield forming die.
Background
The light shield is an important component of an optical system of the space camera, can effectively inhibit stray radiation, and plays a vital role in the imaging quality of the space remote sensor. The light shield mainly has a honeycomb sandwich type, a built-in diaphragm type, a thin-wall shell type and the like according to the structure. Diaphragm type light shields are a form of construction in which multiple layers of diaphragms are placed within a thin shell housing, wherein the housing of the light shield is capable of rejecting non-imaging light energy from a source external to the system (e.g., the sun) and the internal diaphragm of the light shield is capable of rejecting non-imaging light energy from an internal source (e.g., optical components, structures, etc.) and a scattering surface. The carbon fiber reinforced resin matrix composite material has the advantages of light weight, high specific strength, high specific modulus and the like, and becomes a mainstream material of a light shield of a space remote sensor.
At present, the diaphragm type light shield adopts a split forming and an integral forming method. The split molding is to disassemble the light shield into the cover body and the diaphragm to be molded separately and then assemble and connect the cover body and the diaphragm, the method has the advantages of multiple processes, long development period and poor integral rigidity of products, and the integral molding can not only avoid the defects but also play the designable advantages of the performance of the composite material, so the integral molding becomes the future development trend. However, present integrated into one piece's mould structure, because lack the hoop limit structure to the diaphragm mandrel outside and every layer of diaphragm unit lacks the pressurization structure of direction of height, consequently lead to unable to carry out the pre-compaction to every layer of diaphragm, and after the whole layer of putting, can only pass through autoclave pressurization solidification, pressure is too little, unable complete compound die in the product direction of height, cause diaphragm size precision and position precision relatively poor from this, the diaphragm wall thickness is inhomogeneous, the inside closely knit degree of diaphragm is poor, be not suitable for to the lens hood that the wall thickness is thicker.
Patent document with publication number CN206297037U discloses a lens hood forming die, including the upper die base, the front template, back template and bottom plate, install the guide pillar on the upper die base, install the guide pin bushing with guide pillar looks adaptation on the back template, push pedal and push rod fixed plate are installed to the interval from top to bottom between back template and the bottom plate, install the push rod guide pillar on the bottom plate, install the push rod guide pin bushing with push rod guide pillar looks adaptation on the push pedal, the symmetry is provided with capable subassembly i and capable subassembly ii between upper die base and the front template, capable subassembly i and capable subassembly ii include the fagging and set up stop gear and guiding mechanism at the fagging two sides, wherein guiding mechanism includes oblique briquetting and oblique guide pillar, be provided with the groove of stepping down on the die joint of oblique briquetting. However, this patent document has the disadvantage that it is not suitable for diaphragm shades.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a diaphragm type light shield forming die.
The invention provides a diaphragm type lens hood forming die which comprises a base, a main body core die, a cover plate and a plurality of diaphragm assemblies, wherein the base is provided with a plurality of light-shielding holes; the diaphragm assembly comprises a positioning plate and a diaphragm core mold, and the diaphragm core mold is arranged on the positioning plate;
the cover plate and the base are respectively arranged at two ends of the main body core mold, the plurality of diaphragm assemblies are arranged on the main body core mold in a layer-by-layer overlapping mode from top to bottom, and the plurality of diaphragm assemblies are located between the cover plate and the base;
the diaphragm core mould of each layer of diaphragm assembly is connected with the positioning plate of the diaphragm assembly adjacent to the lower layer of diaphragm assembly, and the diaphragm core mould is connected and arranged on the main body core mould;
the positioning plate of the diaphragm assembly, which is close to the cover plate, is connected and arranged on the cover plate, and the positioning plate of the diaphragm assembly, which is close to the base, is connected and arranged on the base.
Preferably, the diaphragm core mold is divided into four petals, the four petals of the diaphragm core mold and the positioning plate are assembled and positioned, and the two petals of the diaphragm core mold are provided with a mold drawing angle along the demolding direction.
Preferably, the surface of the diaphragm mandrel is carved with an error-proofing mark.
Preferably, the diaphragm core mold is provided with a demolding hole at an inner side.
Preferably, the bottom surface of the diaphragm core mold is provided with a limiting step.
Preferably, the upper surface of the diaphragm core mold is provided with a glue overflow groove along the product outline.
Preferably, the upper surface of the positioning plate is provided with a limiting groove.
Preferably, the positioning plate comprises an upper structural plate and a lower structural plate, and the upper structural plate and the lower structural plate are integrally formed;
the lower structural plate is used for positioning the diaphragm core mold, and the upper structural plate is used for providing mechanical pressure in the height direction for the diaphragm core mold.
Preferably, the body core mold is provided with a mold drawing angle in a height direction.
Preferably, the base, the main body core mold, the diaphragm core mold, the positioning plate and the cover plate are all made of P20.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention can ensure higher aperture size precision and position precision;
2. each layer of diaphragm unit can synchronously carry out layering operation, and the layering efficiency is high;
3. according to the invention, each layer of diaphragm unit can be mechanically locked and pre-pressed, and after the whole layer is laid, the die can be pressed and closed by a press, so that the internal compactness of each layer of diaphragm is better ensured;
4. the invention is also applicable to products with thicker diaphragm thickness.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic structural view of a diaphragm type light shield forming mold according to the present invention;
FIG. 2 is a schematic view of a diaphragm mask of the present invention;
FIG. 3 is a schematic view of a diaphragm mandrel split of the present invention;
FIG. 4 is a schematic view of the construction of the diaphragm assembly of the present invention;
fig. 5 is a schematic view of the body plug draft angle of the present invention.
The figures show that:
Error-proof mark 5 of main body core mould 2
Stop step 7 of diaphragm assembly 4
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
As shown in fig. 1 to 5, the diaphragm type light shield forming mold provided by the present invention includes a base 1, a main body core mold 2, a cover plate 3 and a plurality of diaphragm assemblies 4, where the diaphragm assemblies 4 include a positioning plate 401 and a diaphragm core mold 402, the diaphragm core mold 402 is disposed on the positioning plate 401, the cover plate 3 and the base 1 are respectively disposed at two ends of the main body core mold 2, the plurality of diaphragm assemblies 4 are stacked on the main body core mold 2 from top to bottom, the plurality of diaphragm assemblies 4 are located between the cover plate 3 and the base 1, the diaphragm core mold 402 of each layer of diaphragm assembly 4 is connected to the positioning plate 401 of the adjacent lower layer of diaphragm assembly 4, the diaphragm core mold 402 is connected to the main body core mold 2, the positioning plate 401 of the diaphragm assembly 4 close to the cover plate 3 is connected to the cover plate 3, and the positioning plate 401 of the diaphragm assembly 4 close to the base 1 is connected to the base 1. The base 1, the main body core model 2, the diaphragm core model 402, the positioning plate 401 and the cover plate 3 are all made of P20.
The diaphragm mandrel 402 is divided into four petals, the four petals diaphragm mandrel 402 are assembled and positioned with the positioning plate 401, wherein the two petals diaphragm mandrel 402 have a draft angle along the demolding direction. The body core mold 2 is provided with a mold drawing angle in the height direction.
The positioning plate 401 includes an upper structure plate 4011 and a lower structure plate 4012, the upper structure plate 4011 and the lower structure plate 4012 are integrally formed, the lower structure plate 4012 is used for positioning the diaphragm core 402, and the upper structure plate is used for providing a mechanical pressure in a height direction to the diaphragm core 402.
The surface of the diaphragm mandrel 402 is engraved with an error-proofing mark 5. The diaphragm core 402 is provided with a release hole 6 on the inside. The bottom surface of the diaphragm core model 402 is provided with a limiting step 7. The upper surface of the diaphragm core mold 402 is provided with a glue overflow groove 8 along the product contour. The upper surface of the positioning plate 401 is provided with a limit groove 9.
In a preferred embodiment, the diaphragm core mold and the positioning plate are assembled and positioned and combined into a diaphragm unit through screw locking; laying the diaphragm units of each layer separately, positioning and locking the diaphragm unit of the bottommost layer with the base, matching the diaphragm core die of each layer of diaphragm unit with the positioning plate of the diaphragm unit of the lower layer, and positioning the diaphragm core die with the main body core die; each layer of diaphragm units are pre-pressed mechanically through screws and are stacked layer by layer; after the integral layer is laid, the cover plate and the main body core mold are positioned and are in locking connection with the diaphragm unit at the top; and the upper press presses the cover plate to ensure the die assembly in the height direction, and then the whole autoclave is pressurized and cured.
Example (b):
a composite diaphragm type lens hood forming die (figure 1) comprises a base, a main body core die, a diaphragm core die, a positioning plate and a cover plate.
The base, the main body core die, the diaphragm core die, the positioning plate and the cover plate are all made of P20. The diaphragm core mold is divided into four petals, wherein two petals are provided with a 5-degree mold drawing angle along the demolding direction, error-proofing marks (A, B, C.......) (figure 3) are respectively engraved on the two petals, the diaphragm core mold is firstly processed into a whole ring in the processing process and then is divided into four petals, and the demolding direction of the diaphragm core mold is provided with an M12 demolding hole. The diaphragm core mold and the positioning plate are assembled and positioned, the diaphragm core mold and the positioning plate are combined into a diaphragm unit through screw locking, and the upper surface of the diaphragm is provided with a glue overflow groove with the diameter of 6mm (figure 4). And (3) laying the diaphragm units of each layer separately, positioning and locking the diaphragm unit of the bottommost layer and the base, matching the limiting step of the diaphragm core die in each layer of diaphragm unit with the limiting groove of the positioning plate in the diaphragm unit of the lower layer, and positioning the limiting step and the main body core die simultaneously.
Each layer of diaphragm units are pre-pressed mechanically through screws with the diameter of M16 and are stacked layer by layer. After the integral layer is laid, the cover plate and the main body core mold are positioned and are in locking connection with the diaphragm unit at the top, and the parallelism of the cover plate and the bottom surface is better than 0.1. And the upper press presses the cover plate to ensure the die assembly in the height direction, and then the whole autoclave is pressurized and cured. After the product is cured, the main body core mold (shown in figure 5) is removed, the cover plate is removed, the positioning plate is removed, and finally the diaphragm core mold is removed along the horizontal direction.
The invention can ensure higher aperture size precision and position precision, each layer of aperture unit can synchronously carry out layering operation, the layering efficiency is high, each layer of aperture unit can be mechanically locked and pre-pressed, and after the integral layering is finished, the die can be pressed and closed by a press, thereby ensuring that the inner part of each layer of aperture has better compactness and the product with thicker aperture thickness is also applicable.
Those skilled in the art will appreciate that, in addition to implementing the system and its various devices, modules, units provided by the present invention as pure computer readable program code, the system and its various devices, modules, units provided by the present invention can be fully implemented by logically programming method steps in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Therefore, the system and various devices, modules and units thereof provided by the invention can be regarded as a hardware component, and the devices, modules and units included in the system for realizing various functions can also be regarded as structures in the hardware component; means, modules, units for performing the various functions may also be regarded as structures within both software modules and hardware components for performing the method.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A diaphragm type lens hood forming die is characterized by comprising a base (1), a main body core die (2), a cover plate (3) and a plurality of diaphragm assemblies (4); the diaphragm assembly (4) comprises a positioning plate (401) and a diaphragm core mold (402), wherein the diaphragm core mold (402) is arranged on the positioning plate (401);
the cover plate (3) and the base (1) are respectively arranged at two ends of the main body core mold (2), the plurality of diaphragm assemblies (4) are arranged on the main body core mold (2) in a stacked mode from top to bottom, and the plurality of diaphragm assemblies (4) are located between the cover plate (3) and the base (1);
the diaphragm core mold (402) of each layer of diaphragm assembly (4) is connected with the positioning plate (401) of the diaphragm assembly (4) at the lower layer adjacent to the diaphragm assembly, and the diaphragm core mold (402) is connected and arranged on the main body core mold (2);
the positioning plate (401) close to the diaphragm assembly (4) of the cover plate (3) is connected and arranged on the cover plate (3), and the positioning plate (401) close to the diaphragm assembly (4) of the base (1) is connected and arranged on the base (1).
2. The forming mold for diaphragm light shields according to claim 1, characterized in that the diaphragm core mold (402) is divided into four pieces, the four pieces of diaphragm core mold (402) are arranged in assembly and positioning with the positioning plate (401), wherein the two pieces of diaphragm core mold (402) are provided with a mold drawing angle in the mold removing direction.
3. The forming mold for diaphragm light shields according to claim 1, characterized in that the surface of the diaphragm core mold (402) is engraved with error proofing marks (5).
4. The forming mold for diaphragm light shields according to claim 1, characterized in that the diaphragm core mold (402) is provided with a demolding hole (6) on the inside.
5. The forming mold for diaphragm light shields according to claim 1, characterized in that the bottom surface of the diaphragm core mold (402) is provided with a limit step (7).
6. The forming mold for diaphragm light shields according to claim 1, characterized in that the upper surface of the diaphragm core mold (402) is provided with glue overflow grooves (8) along the product contour.
7. The diaphragm light shield forming die of claim 1, wherein the positioning plate (401) is provided with a limiting groove (9) on the upper surface.
8. The diaphragm light shield forming die of claim 1, wherein the positioning plate (401) comprises an upper structural plate (4011) and a lower structural plate (4012), and the upper structural plate (4011) and the lower structural plate (4012) are integrally formed;
the lower structural plate (4012) is used for positioning the diaphragm core model (402), and the upper structural plate is used for providing mechanical pressure effect in the height direction for the diaphragm core model (402).
9. The diaphragm light shield forming mold according to claim 1, wherein the body core mold (2) is provided with a draft angle in a height direction.
10. The stop shade forming mold according to claim 1, wherein the base (1), the body core mold (2), the stop core mold (402), the positioning plate (401) and the cover plate (3) are all made of P20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110913988.0A CN113510939B (en) | 2021-08-10 | 2021-08-10 | Diaphragm type sunshade forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110913988.0A CN113510939B (en) | 2021-08-10 | 2021-08-10 | Diaphragm type sunshade forming die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113510939A true CN113510939A (en) | 2021-10-19 |
| CN113510939B CN113510939B (en) | 2023-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110913988.0A Active CN113510939B (en) | 2021-08-10 | 2021-08-10 | Diaphragm type sunshade forming die |
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| Country | Link |
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| CN (1) | CN113510939B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114311730A (en) * | 2021-12-22 | 2022-04-12 | 长春长光宇航复合材料有限公司 | Composite material light shield, forming die and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105128355A (en) * | 2015-08-26 | 2015-12-09 | 航天材料及工艺研究所 | Auxiliary integral forming method for composite material bearing cylinder soft mould with light baffle ring |
| CN105606142A (en) * | 2015-12-16 | 2016-05-25 | 中国科学院长春光学精密机械与物理研究所 | Large-sized keel type non-intrusive lens hood |
| CN206297037U (en) * | 2016-11-18 | 2017-07-04 | 太仓定准电子科技有限公司 | A kind of light shield mould |
| CN110948903A (en) * | 2019-11-05 | 2020-04-03 | 上海复合材料科技有限公司 | Mold and molding method for preparing carbon fiber grid bearing cylinder through integrated molding |
-
2021
- 2021-08-10 CN CN202110913988.0A patent/CN113510939B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105128355A (en) * | 2015-08-26 | 2015-12-09 | 航天材料及工艺研究所 | Auxiliary integral forming method for composite material bearing cylinder soft mould with light baffle ring |
| CN105606142A (en) * | 2015-12-16 | 2016-05-25 | 中国科学院长春光学精密机械与物理研究所 | Large-sized keel type non-intrusive lens hood |
| CN206297037U (en) * | 2016-11-18 | 2017-07-04 | 太仓定准电子科技有限公司 | A kind of light shield mould |
| CN110948903A (en) * | 2019-11-05 | 2020-04-03 | 上海复合材料科技有限公司 | Mold and molding method for preparing carbon fiber grid bearing cylinder through integrated molding |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114311730A (en) * | 2021-12-22 | 2022-04-12 | 长春长光宇航复合材料有限公司 | Composite material light shield, forming die and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN113510939B (en) | 2023-06-09 |
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