CN215619499U - Hot pressing die for glass fiber reinforced polyimide gasket - Google Patents
Hot pressing die for glass fiber reinforced polyimide gasket Download PDFInfo
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- CN215619499U CN215619499U CN202121931293.7U CN202121931293U CN215619499U CN 215619499 U CN215619499 U CN 215619499U CN 202121931293 U CN202121931293 U CN 202121931293U CN 215619499 U CN215619499 U CN 215619499U
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Abstract
The utility model relates to a hot-pressing die for a glass fiber reinforced polyimide gasket, which comprises an outer die, an inner die and a core die which are matched with each other, wherein the outer die and the inner die are in annular structures, a circular through hole is formed in the center of the inner die, and an annular groove is formed between the outer die and the inner die; the core mold comprises a plurality of annular mold sheets with different thicknesses, the radial size of each annular mold sheet is matched with the annular groove between the outer mold and the inner mold, and the thickness of each annular mold sheet is smaller than the depth of the annular groove, so that the annular mold sheets can be embedded into the annular grooves. The inner mold, the outer mold and the core mold are of annular structures, the core mold comprises a plurality of annular mold sheets with different thicknesses, the thickness of a product can be accurately calculated and controlled, a plurality of products can be produced simultaneously, the inner mold, the outer mold and the core mold are particularly suitable for pressing on a multilayer high-temperature vacuum machine, a plurality of molds are transferred by utilizing a plurality of carrying discs, the cost can be greatly saved, large-scale production can be realized, the product quality is stable, and the production efficiency is high.
Description
Technical Field
The utility model relates to the technical field of dies, in particular to a hot-pressing die for manufacturing a glass fiber reinforced polyimide gasket.
Background
Polyimide (abbreviated as PI) refers to a polymer having an imide ring (-CO-N-CO-) in its main chain, and is one of organic polymer materials with the best overall performance. The high-temperature-resistant insulating material has high temperature resistance of more than 400 ℃, a long-term use temperature range of-200-300 ℃, no obvious melting point at part, high insulating property, dielectric constant of 4.0 at 103 Hz and dielectric loss of only 0.004-0.007, and belongs to F-H grade insulation.
Polyimides can be classified into aliphatic, semi-aromatic and aromatic polyimides according to the chemical structure of the repeating unit. The crosslinking type and the non-crosslinking type are classified according to the interaction force between chains. Polyimide is used as a special engineering material and has been widely applied to the fields of aviation, aerospace, microelectronics, nano-scale, liquid crystal, separation membranes, laser and the like. In the last 60 th century, the research, development and utilization of polyimide was listed as one of the most promising engineering plastics in 21 st century in all countries. Polyimide, because of its outstanding characteristics in terms of performance and synthesis, has been fully recognized for its great potential for use as either a structural material or a functional material, and is believed to be "free of polyimide and thus free of today's microelectronics technology".
At present, a mold for producing the glass fiber reinforced polyimide gasket is generally a traditional mold and comprises an outer mold and an inner mold, a vulcanizing machine is adopted for hot pressing in the manufacturing process, and a heat insulation structure is additionally arranged around the mold. Generally, only the production of individual products can be carried out, the production efficiency is low, the thickness of the obtained polyimide gasket product is not easy to control, the mold unloading is troublesome, the large-scale production is not facilitated, and the product quality is unstable.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a hot-pressing die for a glass fiber reinforced polyimide gasket, which is convenient for producing a plurality of products simultaneously, is particularly suitable for pressing the products by a multilayer high-temperature vacuum press, and can realize large-scale production, stable product quality and higher production efficiency by utilizing a plurality of carrying discs to transfer a plurality of dies.
The purpose of the utility model is realized by adopting the following technical scheme:
a hot-pressing die for a glass fiber reinforced polyimide gasket comprises an outer die, an inner die and a core die which are matched with each other, wherein the outer die and the inner die are of annular structures, a circular through hole is formed in the center of the inner die, and an annular groove is formed between the outer die and the inner die;
the core mold comprises a plurality of annular mold sheets with different thicknesses, the radial size of each annular mold sheet is matched with the annular groove between the outer mold and the inner mold, and the thickness of each annular mold sheet is smaller than the depth of the annular groove, so that the annular mold sheets can be embedded into the annular grooves.
As a preferred technical solution of the present invention, the plurality of ring-shaped mold pieces of the core mold include a first mold piece, a second mold piece, and a third mold piece whose thicknesses are gradually decreased, and a total thickness of the plurality of ring-shaped mold pieces is smaller than a depth of the ring-shaped groove.
As a preferred embodiment of the present invention, the sum of the thicknesses of the first stamper and the glass fiber reinforced polyimide gasket, and the thickness of the second stamper or the third stamper is equal to the depth of the annular groove.
As a preferable technical solution of the present invention, a thickness number code is provided on each of the plurality of annular dies of the core die.
As a preferable technical scheme of the utility model, a pair of screw holes is arranged on the inner die.
As a preferable technical scheme of the utility model, a pair of screw holes is arranged on the outer side surface of the outer die.
The utility model has the beneficial effects that: compared with the prior art, the external mold, the internal mold and the multiple core molds are of an integral structure, the core molds comprise multiple annular mold sheets with different thicknesses, the thickness of products can be accurately calculated and controlled, the multiple products can be produced simultaneously, the method is particularly suitable for pressing on a multilayer high-temperature vacuum machine, the multiple molds are transferred by utilizing multiple carrying discs, the cost can be greatly saved, the large-scale production can be realized, the product quality is stable, and the production efficiency is high.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic top view of the structure of fig. 1.
In the figure: 1. the outer die, 2, the inner die, 3, the through hole, 4 and the annular groove; 11. a first die, 12, a second die, 13, a third die.
Detailed Description
The utility model will be further described with reference to the following detailed description of embodiments and with reference to the accompanying drawings in which:
as shown in fig. 1 and 2, the hot-pressing mold for the glass fiber reinforced polyimide gasket comprises an outer mold 1 and an inner mold 2 which are matched with each other, wherein the inner mold 2 is provided with a circular through hole 3, and an annular groove 4 is arranged between the outer mold 1 and the inner mold 2; a core mould can be placed between the outer mould 1 and the inner mould 2, the core mould comprises a plurality of annular mould sheets with different thicknesses, the radial size of each annular mould sheet is matched with the annular groove 4, and the thickness of each annular mould sheet is smaller than the depth of the annular groove 4, so that the annular mould sheets can be embedded into the annular groove 4.
The plurality of annular mold sheets of the core mold comprise a first mold sheet 11, a second mold sheet 12 and a third mold sheet 13 with the thickness from large to small, and the total thickness of the plurality of annular mold sheets is smaller than the depth of the annular groove. In the working process, the first die piece 11 is placed between the outer die 1 and the inner die 2, then the glass fiber reinforced polyimide powder with the corresponding weight is uniformly added according to the requirement of the thickness of a product, the second die piece 12 or the third die piece 13 is placed according to the estimated thickness after molding, and the estimated thickness of the glass fiber reinforced polyimide gasket and the total thickness of the plurality of annular die pieces are greater than or equal to the depth of the annular groove 4.
The plurality of annular dies are respectively provided with a thickness digital code; the outer side of the outer die 1 is provided with a pair of screw holes for transferring or unloading the die. The top end of the internal mold 2 is provided with a pair of screw holes for transferring or unloading the mold.
The utility model has simple structure, convenient loading and unloading, economy and practicality, is convenient for accurately calculating and controlling the thickness of the product according to the specific gravity of the material, can simultaneously produce a plurality of products, is particularly suitable for pressing the products by a multilayer high-temperature vacuum machine, utilizes a plurality of carrying discs to transfer a plurality of moulds in the production, saves the cost, realizes large-scale production, and has stable product quality and high production efficiency.
The above-mentioned embodiments are only used for illustrating the conception and technical features of the present invention, and the purpose thereof is to make the technical solution and implementation manner of the present invention known to those skilled in the art, and the protection scope of the present invention is not limited thereby. All equivalents and changes equivalent to the technical solution of the present invention should be covered within the protection scope of the present invention.
Claims (6)
1. The hot-pressing die for the glass fiber reinforced polyimide gasket comprises an outer die, an inner die and a core die which are matched with each other, and is characterized in that: the outer mold and the inner mold are of annular structures, a circular through hole is formed in the center of the inner mold, and an annular groove is formed between the outer mold and the inner mold;
the core mold comprises a plurality of annular mold sheets with different thicknesses, the radial size of each annular mold sheet is matched with the annular groove between the outer mold and the inner mold, and the thickness of each annular mold sheet is smaller than the depth of the annular groove, so that the annular mold sheets can be embedded into the annular grooves.
2. The mold for hot-pressing of the glass fiber reinforced polyimide gasket as claimed in claim 1, wherein: the plurality of annular matrixes of the core mold comprise a first matrix, a second matrix and a third matrix, wherein the thicknesses of the first matrix, the second matrix and the third matrix are gradually reduced, and the total thickness of the plurality of annular matrixes is smaller than the depth of the annular groove.
3. The mold for hot-pressing of the glass fiber reinforced polyimide gasket as claimed in claim 2, wherein: the sum of the thicknesses of the first mold sheet and the glass fiber reinforced polyimide gasket, and the thickness of the second mold sheet or the third mold sheet are equal to the depth of the annular groove.
4. The mold for hot-pressing of the glass fiber reinforced polyimide gasket as claimed in claim 1, wherein: and a plurality of annular dies of the core die are respectively provided with a thickness digital code.
5. The mold for hot-pressing of the glass fiber reinforced polyimide gasket as claimed in claim 1, wherein: a pair of screw holes is arranged on the inner die.
6. The mold for hot-pressing of the glass fiber reinforced polyimide gasket as claimed in claim 1, wherein: the outer side surface of the outer die is provided with a pair of screw holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121931293.7U CN215619499U (en) | 2021-08-17 | 2021-08-17 | Hot pressing die for glass fiber reinforced polyimide gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121931293.7U CN215619499U (en) | 2021-08-17 | 2021-08-17 | Hot pressing die for glass fiber reinforced polyimide gasket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215619499U true CN215619499U (en) | 2022-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121931293.7U Active CN215619499U (en) | 2021-08-17 | 2021-08-17 | Hot pressing die for glass fiber reinforced polyimide gasket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215619499U (en) |
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2021
- 2021-08-17 CN CN202121931293.7U patent/CN215619499U/en active Active
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