CN111976038A - Hot die pressing production method of mica special-shaped piece - Google Patents
Hot die pressing production method of mica special-shaped piece Download PDFInfo
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- CN111976038A CN111976038A CN202010623125.5A CN202010623125A CN111976038A CN 111976038 A CN111976038 A CN 111976038A CN 202010623125 A CN202010623125 A CN 202010623125A CN 111976038 A CN111976038 A CN 111976038A
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- mica
- blank
- die
- profile
- hot
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- 239000010445 mica Substances 0.000 title claims abstract description 144
- 229910052618 mica group Inorganic materials 0.000 title claims abstract description 144
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 238000007723 die pressing method Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 16
- 230000001788 irregular Effects 0.000 claims abstract description 12
- 238000005520 cutting process Methods 0.000 claims abstract description 11
- 238000007781 pre-processing Methods 0.000 claims abstract description 8
- 238000000465 moulding Methods 0.000 claims description 16
- 239000003292 glue Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000004049 embossing Methods 0.000 claims 8
- 239000000463 material Substances 0.000 abstract description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 238000007731 hot pressing Methods 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000037303 wrinkles Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 206010066054 Dysmorphism Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/32—Methods and apparatus specially adapted for working materials which can easily be split, e.g. mica, slate, schist
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/32—Methods and apparatus specially adapted for working materials which can easily be split, e.g. mica, slate, schist
- B28D1/327—Methods and apparatus specially adapted for working materials which can easily be split, e.g. mica, slate, schist for cutting or shearing easily splittable working materials
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Making Paper Articles (AREA)
Abstract
The invention provides a hot die-pressing production method of a mica special-shaped piece, which comprises the following steps: s101: stacking the mica paper according to the quality of the mica irregular piece to form a blank; s102: pre-processing the blank to form a blank to be hot-molded, wherein the pre-processing comprises at least one of cutting, pre-folding and placing a gasket; s103: and (3) putting the blank to be subjected to hot die pressing into a die cavity, and carrying out hot die pressing treatment on the blank through the die to form the mica irregular part. The mica special-shaped piece is produced by the method of hot die pressing after the material is cut, pretreated and placed with the gasket, so that the manufacturing problem of the mica special-shaped piece is solved, the mica paper can be efficiently made into the mica special-shaped piece, and the production efficiency is improved.
Description
Technical Field
The invention relates to the field of mica special-shaped piece production, in particular to a hot die pressing production method of a mica special-shaped piece.
Background
At present, a core component of a new energy electric automobile in domestic development is a lithium battery pack, a lithium battery can emit a large amount of heat in the working process, high temperature can be generated under extreme conditions, potential safety hazards are caused to vehicles and people, therefore, a mica part taking mica as a material is often assembled on the surface of the lithium battery, and the part can be designed into a 3D special-shaped piece according to the requirement of the battery pack. The mica special-shaped piece is mainly characterized by super high-temperature resistance and excellent insulating property.
The mica special-shaped piece prevents high temperature possibly generated during abnormal work of the electric automobile from directly acting on a cab and a rear seat of the automobile, so that personnel in the automobile are protected, and enough escape time is provided for the personnel in the automobile. However, the conventional mica industry mainly produces flat plate-shaped products such as mica paper and mica plates, and the manufacturing of 3D products such as mica profiles is rarely involved, so that it is necessary to research a new production process for manufacturing the mica profiles.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a hot-die-pressing production method of a mica special-shaped piece, which comprises the steps of obtaining a material for producing the mica special-shaped piece in a mica paper stacking mode, cutting the material, preprocessing the material, placing a gasket, and producing the mica special-shaped piece in the hot-die-pressing mode, so that the manufacturing problem of the mica special-shaped piece is solved, the mica paper can be efficiently made into the mica special-shaped piece, and the production efficiency is improved.
In order to solve the above problems, the present invention adopts a technical solution as follows: a hot die-pressing production method of a mica special-shaped piece comprises the following steps: s101: stacking the mica paper according to the quality of the mica irregular piece to form a blank; s102: pre-processing the blank to form a blank to be hot-pressed, wherein the pre-processing comprises at least one of cutting, pre-folding and placing a gasket; s103: and placing the blank to be subjected to hot die pressing into a die cavity, and carrying out hot die pressing treatment on the blank through the die to form the mica irregular part.
Further, the step of stacking the mica paper according to the quality and size of the mica profiled element to form a blank further comprises the following steps: and coating glue on the surface of the mica paper to form the gummed paper, and cutting the gummed paper according to a preset size to form the mica gummed paper.
Further, the step of stacking the mica paper according to the quality of the mica profile to form a blank specifically comprises: and obtaining the quantity of the mica coated gummed paper according to the quality of the mica irregular piece, and stacking the quantity of the mica coated gummed paper to form a blank.
Further, the step of pre-folding the blank specifically includes: and folding each part of the blank according to the shape of the template of the mica profile.
Further, the step of placing the gasket on the blank specifically comprises: and placing a gasket at the position of the blank corresponding to the bulge of the die.
Further, the step of placing the blank to be hot-molded into the mold cavity further comprises the following steps: and spraying a release agent on the surfaces of the upper die and the lower die of the die.
Further, the step of placing the blank to be hot-molded into the mold cavity specifically includes: and placing the blank at a corresponding position in the die cavity, and flattening the blank.
Further, the step of forming the mica profile by hot-pressing the blank through the mold specifically comprises: and carrying out hot die pressing treatment on the blank through a die of a hot press to form the mica irregular part.
Further, the heating temperature of the blank is 120-320 ℃ during hot die pressing.
Further, the step of hot-pressing the blank by the mold to form the mica profile further comprises the following steps: and cooling the mica special-shaped piece.
Compared with the prior art, the invention has the beneficial effects that: the mica special-shaped piece production method comprises the steps of obtaining a material for producing the mica special-shaped piece in a mica paper stacking mode, cutting the material, preprocessing the material, placing a gasket, and producing the mica special-shaped piece in a hot die pressing mode, so that the manufacturing problem of the mica special-shaped piece is solved, the mica paper can be efficiently made into the mica special-shaped piece, and the production efficiency is improved.
Drawings
FIG. 1 is a flow chart of an embodiment of the hot molding production method of the mica profile according to the present invention;
FIG. 2 is a process flow diagram of an embodiment of the hot molding production method of the mica profile according to the present invention;
fig. 3 is a schematic view of an embodiment of the mica profile in the hot molding production method of the mica profile according to the present invention;
fig. 4 is a structural view of an embodiment of the blank before hot stamping in the hot stamping production method of the mica profile according to the present invention.
In the figure: 1. a blank; 2. a corner; 3. a gasket; 4. and (4) folding the edges.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
Referring to fig. 1-4, fig. 1 is a flow chart of an embodiment of the method for producing mica profiled element by hot molding according to the present invention; FIG. 2 is a process flow diagram of an embodiment of the hot molding production method of the mica profile according to the present invention; fig. 3 is a schematic view of an embodiment of the mica profile in the hot molding production method of the mica profile according to the present invention; fig. 4 is a structural view of an embodiment of the blank before hot stamping in the hot stamping production method of the mica profile according to the present invention. The hot-molding production method of the mica profiled piece of the invention is explained in detail with reference to the attached drawings 1-4.
In this embodiment, the method for producing mica profile by hot molding comprises the following steps:
s101: mica paper is stacked to form a blank 1 according to the quality of the mica profile.
In this embodiment, the step of stacking the mica paper according to the mass and size of the mica profile to form the blank 1 further comprises: coating glue on the surface of the mica paper to form the gummed paper, and cutting the gummed paper according to the preset size to form the mica gummed paper.
In a specific embodiment, the glue is organic silicone resin glue, and after the coated paper is dried and rolled, the coated paper is cut into mica coated paper sheet by sheet according to a preset size.
In this embodiment, the preset size is set according to the unfolded size of the mica profile, wherein, considering the loss of the mica paper during folding and the subsequent workability, a certain size can be added to the unfolded size, and the specific size can be set according to the actual size of the mica profile to be manufactured, which is not limited herein.
In this embodiment, the step of stacking the mica paper according to the quality of the mica profile to form the blank 1 specifically includes: and obtaining the quantity of the mica coated gummed paper according to the quality of the mica special-shaped piece, and stacking the quantity of the mica coated gummed paper to form a blank 1.
Because the mica coated paper has a very thin thickness, a plurality of mica coated papers must be stacked together to form the thickness of the mica profile. In field operation, the mica profile is stacked by weighing, namely, the theoretical mass (m ═ ρ × v) of the product is calculated from a 3D model of the mica profile, then the weighing of the electronic scale is set according to the theoretical mass, and when the mica overfull paper is stacked to the mass value of the mica profile, the amount of the mica overfull paper is not increased. Of course, it is also possible to stack a specific amount of mica coated paper directly by empirical values, but there is a risk of counting errors during manual counting, which results in thinner or thicker mica profile pieces that do not meet the predetermined thickness specification.
S102: the blank 1 is subjected to a pretreatment including at least one of cutting, pre-folding, and placing of a gasket 3 to form the blank 1 to be hot-stamped.
In this embodiment, the step of pre-folding the blank 1 specifically includes: the portions of the blank 1 are folded according to the shape of the template of the mica profile to form a blank 1 having the same shape as the template.
In this embodiment, the step of placing the gasket 3 on the blank 1 specifically includes: a gasket 3 is placed on the blank 1 in a position corresponding to the projections of the die.
Cutting corners 2: some mica dysmorphism pieces have the turning (like the arc angle) all around to need to process out, because the arc angle is formed by two adjacent straight edges of blank 1 are folded up, need cut a line before folding and just can fold into the arc angle, if directly overlapping both sides in addition, can lead to the thickness to be normal twice, so can be in the corner 2 local appropriate some mica of cutting off and cross the adhesive tape at blank 1 to guarantee that this arc angle thickness is suitable.
Pre-folding: since the blank 1 formed after stacking is in the shape of a flat plate, this shape is to be made into a 3D profile. Therefore, it is necessary to fold in advance before placing it in the mould, so as to match the blank 1 with the mould cavity. Shown at 1 in fig. 4 is the face that needs to be folded. Before folding, a template can be made according to the 3D modeling of the mica special-shaped piece, and when folding, each folding edge 4 can be folded by the template. It should be noted that the angle of the folded edge 4 to the flat plate when folded is preferably not more than 90 deg., since the mica perk itself is relatively brittle and the greater the angle of folding, the greater the risk of the mica perk breaking.
Placing a gasket 3: some mica abnormal shape piece designs have some circular recesses, need through the die pressing preparation, if direct die pressing molding, the recess of coming out can be than the thickness of plane department obviously thinner, and thin recess intensity reduces and leads to breaking easily, consequently need make some gaskets 3 before the die pressing, and these gaskets 3 are cut by the adhesive tape and are formed, and the shape can with the die pressing molding phase-match. The gasket 3 is placed on the bulge of the mold in advance, and after the mold pressing is finished, the thickness required by the design can be obtained at the position of the female mold pressing molding. Shown at 3 in fig. 4 is the position of the shim 3. In addition, a gummed paper pad 3 is often placed at the position 2 in the figure 4, so that the corner strength is increased, and the arc corner is prevented from being easily broken.
S103: and (3) placing the blank 1 to be subjected to hot die pressing into a die cavity, and carrying out hot die pressing treatment on the blank 1 through the die to form the mica irregular part.
Because the mica paper forming the blank 1 is provided with glue, the glue is adhered to the die to a certain extent after being heated at high temperature, so that the demoulding is difficult. Therefore, in this embodiment, the step of placing the blank 1 to be hot-molded into the mold cavity further comprises, before the step of: and (3) spraying a release agent on the surfaces of the upper die and the lower die of the die, and solving the problem of difficult demoulding through the release agent.
In this embodiment, the step of placing the blank 1 to be hot-molded into the mold cavity specifically includes: and placing the blank 1 at a corresponding position in a die cavity of the die, and flattening the blank 1.
In a specific embodiment, the folded blank 1 is stably moved to a mold and placed at a position corresponding to a mold cavity of the mold (an alignment reference line for alignment is designed on the mold to assist in aligning the blank 1), and the mica is prevented from passing through the adhesive paper to cause wrinkles as much as possible in the moving process of the blank 1, because the wrinkles during loading may cause wrinkles after mold pressing, which may cause product quality reduction.
In this embodiment, after the blank 1 is placed in the mold, the mica coated paper can be smoothed and flattened manually or mechanically to prevent the mica coated paper from local arching, bulging, creasing, etc., and a part of air between the mica coated paper can be exhausted.
In this embodiment, the step of forming the mica irregular part by hot-molding the blank 1 through the mold specifically includes: and (3) carrying out hot die pressing treatment on the blank 1 through a die of a hot press to form the mica special-shaped piece.
In one embodiment, the upper and lower dies are closed by actuating a die button of a hot press, which is preset to a heating temperature (typically 120 ℃ to 320 ℃), and set to a clamping force (typically 5 kg/cm)2To 320kg/cm2In between), a hot pressing time (typically between 5 minutes and 80 minutes) is set.
In this embodiment, the step of forming the mica profile by hot-molding the blank 1 with the mold further comprises the following steps: and (5) cooling the mica special-shaped piece.
In a specific embodiment, the mica profile piece taken out of the hot press is still relatively high in temperature, and needs to be placed for waiting for natural cooling or accelerated cooling by cooling equipment such as an electric fan and the like, and meanwhile, attention is paid to avoid that a human body directly touches a product, and the damage such as burning is prevented.
Wherein, if the cooled mica special-shaped piece needs to be prevented from being damaged, the mica special-shaped piece can be packaged by a special packaging box and can directly flow into the next working procedure if not necessary.
Has the advantages that: the mica special-shaped piece hot-die pressing production method obtains the material for producing the mica special-shaped piece in a mica paper stacking mode, cuts, pretreats and places the gasket on the material, and then produces the mica special-shaped piece in a hot-die pressing mode, so that the manufacturing problem of the mica special-shaped piece is solved, the mica paper can be efficiently made into the mica special-shaped piece, and the production efficiency is improved.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. A hot die-pressing production method of a mica special-shaped piece is characterized by comprising the following steps:
s101: stacking the mica paper according to the quality of the mica irregular piece to form a blank;
s102: pre-processing the blank to form a blank to be hot-pressed, wherein the pre-processing comprises at least one of cutting, pre-folding and placing a gasket;
s103: and placing the blank to be subjected to hot die pressing into a die cavity, and carrying out hot die pressing treatment on the blank through the die to form the mica irregular part.
2. A method of hot embossing a mica profile as claimed in claim 1, wherein the step of stacking the mica paper to form a blank according to the mass and size of the mica profile further comprises:
and coating glue on the surface of the mica paper to form the gummed paper, and cutting the gummed paper according to a preset size to form the mica gummed paper.
3. A method of hot embossing a mica profile as claimed in claim 2, wherein the step of stacking the mica paper to form a blank according to the quality of the mica profile comprises:
and obtaining the quantity of the mica coated gummed paper according to the quality of the mica irregular piece, and stacking the quantity of the mica coated gummed paper to form a blank.
4. A method of hot embossing a mica profile according to claim 1, wherein the step of pre-folding the blank comprises in particular:
and folding each part of the blank according to the shape of the template of the mica profile.
5. A method of hot embossing a mica profile as claimed in claim 1, wherein the step of shimming the blank specifically comprises:
and placing a gasket at the position of the blank corresponding to the bulge of the die.
6. A method of thermally moulding a mica profile according to claim 1, wherein the step of placing the blank to be thermally moulded into the mould cavity is preceded by the step of:
and spraying a release agent on the surfaces of the upper die and the lower die of the die.
7. A method of thermally moulding a mica profile according to claim 1, wherein the step of placing the blank to be thermally moulded into the mould cavity comprises in particular:
and placing the blank at a corresponding position in the die cavity, and flattening the blank.
8. A method of thermally embossing a mica profile as claimed in claim 1, wherein the step of thermally embossing the blank by the die to form a mica profile specifically comprises:
and carrying out hot die pressing treatment on the blank through a die of a hot press to form the mica irregular part.
9. A method of thermally moulding a mica profile as claimed in claim 1, wherein the blank is thermally moulded at a heating temperature of 120 ℃ -.
10. A method of thermally embossing a mica profile as claimed in claim 1, wherein the step of thermally embossing the blank by the die to form a mica profile further comprises:
and cooling the mica special-shaped piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010623125.5A CN111976038A (en) | 2020-06-30 | 2020-06-30 | Hot die pressing production method of mica special-shaped piece |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010623125.5A CN111976038A (en) | 2020-06-30 | 2020-06-30 | Hot die pressing production method of mica special-shaped piece |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110605777A (en) * | 2019-09-17 | 2019-12-24 | 苏州可川电子科技股份有限公司 | Mold and process for solving problem of surface rubberizing of 3D (three-dimensional) mica |
| CN113106776A (en) * | 2021-03-09 | 2021-07-13 | 通城县云水云母科技有限公司 | Preparation method of low-halogen mica paper product |
| CN113580601A (en) * | 2021-07-04 | 2021-11-02 | 湖北平安电工科技股份公司 | Manufacturing method of large-size mica plate 3D part |
| CN114274597A (en) * | 2021-02-18 | 2022-04-05 | 湖北平安电工科技股份公司 | Mica special-shaped piece for lithium battery assembly and processing method |
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| CN113580601A (en) * | 2021-07-04 | 2021-11-02 | 湖北平安电工科技股份公司 | Manufacturing method of large-size mica plate 3D part |
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