CN106988161B - A kind of paper mould wet pressing rubber is swollen type preparation method and the swollen type device of rubber - Google Patents
A kind of paper mould wet pressing rubber is swollen type preparation method and the swollen type device of rubber Download PDFInfo
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- CN106988161B CN106988161B CN201710316431.2A CN201710316431A CN106988161B CN 106988161 B CN106988161 B CN 106988161B CN 201710316431 A CN201710316431 A CN 201710316431A CN 106988161 B CN106988161 B CN 106988161B
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- wet base
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J3/00—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds
- D21J3/06—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds of stoppers
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J5/00—Manufacture of hollow articles by transferring sheets, produced from fibres suspensions or papier-mâché by suction on wire-net moulds, to couch-moulds
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Paper (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of swollen type preparation methods of paper mould wet pressing rubber comprising following steps: (1) prepared by mold: setting midge mould and cold extruding die, and cold extruding die is equipped with rubber and rises jacket；(2) slurrying: allotment slurry；(3) wet base molding: slurry is shaped to wet base on midge mould；(4) cold extrusion: midge mould and cold extruding die mold, and cold extruding die is passed through high pressure gas, and rubber rises by jacket in the wet base of high pressure gas extruded paper support, the moisture in wet base is squeezed out, and wet base wall thickness are squeezed thin.Invention additionally discloses a kind of swollen type devices of rubber.The present invention is risen jacket by being arranged rubber in the mold core of cold extruding die；After midge mould and the molding of midge mould, the elastic fashion of extrusion of the wet base side wall of rubber film extruded paper support is pushed by air pressure (or oil pressure), its moisture is squeezed out, and it is squeezed thin, the water content of the wet base of paper support is small, then the decrement of thermoforming stage is just smaller, and it is easier to form, and yields is higher.
Description
Technical field
The present invention relates to the technical fields of paper mould preparation, and in particular to a kind of swollen type preparation of paper mould wet pressing rubber
Method, and implement the swollen type device of rubber of the preparation method.
Background technique
Paper mould also known as paper support, be with carton leftover pieces, newsprint, white pure paper pulpboard (wood-pulp board, sugarcane pulpboard,
Bamboo pulp plate etc.) etc. be raw material, by pulping and deploy the slurry of proportional concentration, slurry on the numerical control mould of customization,
Through vacuum adsorption molding, the wet base of forming handles through drying, hot pressing integer and trimming again and forms variety classes and purposes
Environment-friendlypaper paper product.
The production process of paper mould is discharged without waste water, exhaust gas, and production process is recycled with water seal.Production is used main
Raw material are waste paper, and abundance, cheap main raw material(s) are waste paper, and abundance, price are low, and the synthesis for belonging to waste is opened
Hair utilizes.Paper mould complete its to packed article in commodity circulations such as storage, transport, sale during the shockproof guarantor of buffering
Protect mission after, waste as plain paper recyclable regenerative utilize, even if abandon in natural environment as paper one
Sample is easy to rot to resolve into plant fiber.
Paper mould anti-vibration protected to the buffering of packed article is elastic and its well-designed sky by fiber itself
Chamber geometry is realized.Show it to the protective foot of packed article to substitute by a large amount of practical application and test
Polystyrene plastics foam is to solve " white pollution " ideal environment-friendly type substitute.
The manufacturing process of paper mould: the manufacture craft of paper mould divides dry-pressing manufacture craft and wet pressing manufacture craft.
Dry-pressing manufacture craft:
1) pulp board is added water after pulping by, deploys the slurry of proportional concentration；
2) slurry is on the suction paddle mold of customization, through vacuum adsorption molding, demoulding sunning；
3) the wet base of forming is fabricated to the dry body of water about 20% by drying (sunning or drying)；
4) dry body passes through optical mode hot pressing shaping, becomes finished product after trimming.
The characteristics of dry-pressing manufacture craft: first is that substep production is noncontinuity production；Second is that production precision is not high.
Wet pressing manufacture craft:
1) slurrying: by pulp board plus water after pulping, the slurry of proportional concentration is deployed；
2) is formed: slurry is on the suction paddle mold of customization, through vacuum adsorption molding；
3) cold extrusion: the moisture in wet base is squeezed out, together in the wet base for inhaling paddle mold adsorption forming with cold-extruded press-fitting mould
When the wall thickness of wet base is squeezed it is thin；This cold extrusion is hard fashion of extrusion；
4) is hot-forming: the wet base after cold extrusion is transferred to heat supply network mould, is molded with hot optical mode, in certain pressure and
At temperature (about 150 degree), by hot pressing in about 90 seconds, demoulding.
5) through trimming after demoulding, finished product trimming: can be become.
The characteristics of wet pressing manufacture craft: first is that continuous production, which is molding-cold extrusion-hot-briquetting modeling process, to be connected in equipment
Continuous progress, high degree of automation；Second is that production precision is relatively high；Third is that the product of low-angle side wall, i.e. draft angle can be made
Degree can be with very little, and about 1 degree.
But the difficult point of wet pressing manufacture craft is: decrement≤0.8 millimeter when paper support side wall is hot-forming, when cold extrusion
Decrement≤0.6--0.8 millimeters, because of excessive decrement, can molding when cause " pusher ", therefore paper support side wall can produce
Raw crackle.Example: paper support be hot pressed into after 1 millimeter of sidewall thickness: about 2.4 millimeters of the wet base sidewall thickness after then inhaling paddle, cold extrusion
About 1.7 millimeters of wet base sidewall thickness afterwards.
Therefore, when making side wall low-angle (demoulding angle) product, in addition to being wanted to slurry (such as concentration, beating degree)
Other than asking, there is higher requirement to the wet base of cold extrusion before hot pressing: the sidewall thickness of the wet base after cold extrusion, after hot-forming
The sidewall thickness of dry body is big≤and 0.8 millimeter.Example: 1 millimeter of the sidewall thickness after paper support hot pressing, the then side wall of the wet base after cold extrusion
Thickness≤1.8 millimeter.
Common practice is in the industry of the wet base cold extrusion of paper support, and after setting amount of compression, wet base is adsorbed on midge mould, with
Cold extruding die molds under stress, wet base moisture is squeezed out, while side wall is thinned to hot extrusion molding requirement.Above technique is done
Method can not make the thicker paper support of wall thickness, and thin-walled paper support is easily-deformable, greatly limits his application range.
Above technique way can not make the thicker paper support of wall thickness, and thin-walled paper support is easily-deformable, greatly limits his
Application range.
Summary of the invention
This invention is to provide a kind of swollen type preparation method of paper mould wet pressing rubber for current art deficiency, solve
The problem of traditional wet pressing technique way can not make wall thickness thicker paper support.
The present invention also provides a kind of swollen type devices of rubber for implementing the preparation method.
Present invention technical solution used for the above purpose is:
A kind of swollen type preparation method of paper mould wet pressing rubber comprising following steps:
(1) prepared by mold: setting midge mould and cold extruding die, and the cold extruding die is equipped with the swollen jacket of rubber, the rubber
Swollen type is set on the mold core of cold extruding die；
(2) slurrying: by pulp board plus water after pulping, it is deployed into slurry；
(3) wet base molding: for slurry on midge mould, the vacuum adsorption molding through midge mould is wet base；
(4) cold extrusion: midge mould and cold extruding die mold, and cold extruding die is passed through high pressure gas, and rubber is swollen jacket is in high pressure
It is expanded under the action of gas, squeezes wet base, the moisture in wet base is squeezed out, and wet base wall thickness squeezed thin.
As a further improvement, its is further comprising the steps of:
(5) hot-forming: the wet base after step (4) cold extrusion being transferred to heat supply network mould, is molded with hot optical mode, passes through pressure
Carrying out hot pressing with temperature is paper support, subsequent paper support demoulding；
(6) trimming: by the hot-forming paper support trimming of step (5), finished product is obtained.
As a further improvement, in the step (1), the midge mould is equipped with vacuum suction mechanism, in the midge mould
Equipped with ventilative silk screen；The cold extruding die is equipped with high pressure expansion machine structure；
The step (3) specifically includes the following contents:
For slurry on midge mould, the vacuum air pump through midge mould is configured to negative pressure, adsorbs slurry, and moisture is from ventilative silk screen
It is taken away by midge mould, is shaped to wet base；
The step (4) specifically includes the following contents:
Midge mould and cold extruding die mold in step (4), at this point, cold extruding die and wet base side wall do not have amount of compression, it is cold
Extrusion die is passed through high pressure gas, and rubber is swollen, and jacket expands under the action of high pressure gas, squeezes wet base, and the moisture in wet base is squeezed
Out, and by wet base wall thickness squeeze thin, moisture in wet base is taken away through ventilative silk screen by midge mould, and the moisture reduced in wet base contains
Amount, increases the adhesion strength of wet uncoated paper wall.
As a further improvement, the demoulding angle of the wet base is 1~2 degree in the step (4).
As a further improvement, the pressure value of the high pressure gas is 0.6MPa~1.2MPa in the step (4).
As a further improvement, the swollen jacket of rubber expands extruding under the action of high pressure gas in the step (4)
After wet base, the water content of wet base is less than or equal to 50%.
A kind of swollen type device of rubber for implementing the swollen type preparation method of above-mentioned paper mould wet pressing rubber, the swollen type dress of rubber
The swollen type device of rubber is set equipped with midge mould and cold extruding die, the cold extruding die is equipped with the swollen jacket of rubber, the swollen jacket of rubber
It is arranged on the mold core of cold extruding die.
As a further improvement, the cold extruding die is equipped with the swollen jacket pressing plate of rubber, the swollen jacket of rubber passes through rubber
Swollen jacket pressing plate is fixed on cold extruding die mold core.
As a further improvement, the cold extruding die mold core is equipped with high pressure expansion machine structure, the high pressure expansion machine structure includes
High pressure chest in mold core is set, and the multiple gases at high pressure air inlet being connected to high pressure chest, the swollen jacket of rubber is arranged
In multiple gases at high pressure air inlet.
As a further improvement, the midge mould is equipped with vacuum suction mechanism, the vacuum suction mechanism includes that setting exists
Take out the pumping air cavity in slurry mould, and several exhaust midge stomatas being connected to pumping air cavity.
Beneficial effects of the present invention: since in cold extrusion process, by the more Bao Yuehao of wet base side wall compression, then it is in heat
The decrement of formative stage is just smaller, and it is easier to form, and yields is higher.The present invention passes through in the mold core of cold extruding die
It is arranged the swollen jacket of rubber, the contact of paper support side wall is midge mould metal covering on one side, and the another side of paper support side wall contact is cold extrusion
The rubber film of mould rubber is swollen jacket；After midge mould and cold extruding die molding, rubber film is pushed to squeeze by air pressure (or oil pressure)
The elastic fashion of extrusion for pressing wet base side wall, its moisture is squeezed out, and squeezed it is thin, pass through rubber film elasticity squeeze, realize
In cold extrusion process, wet base side wall compresses thinner, and the water content of wet base is less than or equal to 50%, then the compression of thermoforming stage
Amount is just smaller, and it is easier to form, and yields is higher.
With reference to the accompanying drawing with specific embodiment, the present invention is described in more detail.
Detailed description of the invention
Fig. 1 is the swollen type apparatus structure schematic diagram one of rubber of the present embodiment；
Fig. 2 is the swollen type apparatus structure schematic diagram two of rubber of the present embodiment；
Fig. 3 is the swollen type device the schematic diagram of the section structure of rubber of the present embodiment；
Fig. 4 is A portion structure schematic diagram in Fig. 3.
In figure: 1. midge moulds, 11 vacuum suction mechanisms, 12 ventilative silk screens, 13 pumping air cavitys, 14 exhaust midge stomatas, 15
Detour hook, 16 vacuum suction gas nozzles, 2 cold extruding dies, 21 mold cores, 22 rubber are swollen jacket, 23 high pressure expansion machine structures, 24 pressing plates, 25
High pressure chest, 26 gases at high pressure air inlet, 27 gas nozzles or oil nozzle, 3 wet bases.
Specific embodiment
Embodiment, referring to Fig. 1~4, the swollen type preparation method of paper mould wet pressing rubber provided in this embodiment comprising with
Lower step:
(1) prepared by mold: setting midge mould 1 and cold extruding die 2, and the cold extruding die 2 is equipped with the swollen jacket 22 of rubber, described
Rubber is swollen, and jacket 22 is arranged on the mold core 21 of cold extruding die 2；
The midge mould 1 is equipped with vacuum suction mechanism 11, and ventilative silk screen 12 is equipped in the midge mould 1；The cold extrusion
Mould 2 is equipped with high pressure expansion machine structure 23；
(2) slurrying: by pulp board plus water after pulping, it is deployed into slurry；
(3) wet base molding: for slurry on midge mould 1, the vacuum suction mechanism 11 through midge mould 1 forms negative pressure, absorption slurry
Material, moisture are taken away from ventilative silk screen 12 by midge mould 1, and wet base 3 is shaped to；
(4) cold extrusion: midge mould 1 and cold extruding die 2 mold, at this point, the swollen jacket 22 of the rubber of cold extruding die 2 and wet base 3
Side wall does not have an amount of compression, and 2 high pressure expansion machine structure 23 of cold extruding die is passed through high pressure gas, and high pressure gas is from high pressure expansion machine structure 23
Gases at high pressure air inlet 26 enters between the swollen jacket 22 of rubber and mold core 21, the pressure value of the high pressure gas be 0.6MPa~
1.2MPa, rubber is swollen, and jacket 22 expands under the action of high pressure gas, squeezes wet base 3, and the moisture in wet base 3 is squeezed out, and
Wet 3 wall thickness of base is squeezed thin；Moisture in wet base 3 is taken away through ventilative silk screen 12 by midge mould 1, and the moisture reduced in wet base 3 contains
The water content of amount, wet base 3 is less than or equal to 50%, increases the adhesion strength of wet 3 paper wall of base；
The demoulding angle of the 3 paper support of wet base is 1~2 degree；The swollen jacket 22 of rubber is swollen under the action of high pressure gas
After the swollen wet base 3 of extruding；
(5) hot-forming: the wet base 3 after step (4) cold extrusion being transferred to heat supply network mould, is molded with hot optical mode, passes through pressure
It is paper support, subsequent paper support demoulding that power and temperature, which carry out hot pressing,；
(6) trimming: by the hot-forming paper support trimming of step (5), finished product is obtained.
Wherein, when making side wall low-angle (demoulding angle) product, in addition to being wanted to slurry (such as concentration, beating degree)
Other than asking, there is higher requirement to the wet base 3 of cold extrusion before hot pressing: the sidewall thickness of the wet base 3 after cold extrusion, than hot-forming
Afterwards the sidewall thickness of dry body it is big≤0.8 millimeter.Example: paper support be hot pressed into after 1 millimeter of sidewall thickness, then the wet base 3 after cold extrusion
Sidewall thickness≤1.8 millimeter.
The present embodiment also provides a kind of swollen type device of rubber, and the swollen type device of the swollen type device rubber of rubber is equipped with midge mould
1 is equipped with the swollen jacket 22 of rubber with cold extruding die 2, the cold extruding die 2, and cold extruding die 2 is arranged in the swollen jacket 22 of rubber
On mold core 21；
The cold extruding die 2 is equipped with the swollen jacket pressing plate 24 of rubber, and the swollen jacket 22 of rubber passes through the swollen jacket pressing plate of rubber
24 are fixed on 2 mold core 21 of cold extruding die, and the surrounding of rubber is swollen jacket pressing plate 24 the is arranged in swollen jacket of rubber makes the swollen jacket of rubber
Confined space is formed between 22 and mold core 21, when not being filled with high pressure gas or liquid, rubber is swollen jacket 22 and mold core 21 are tight
Closely connected conjunction；
2 mold core 21 of cold extruding die is equipped with high pressure expansion machine structure 23, and the high pressure expansion machine structure 23 includes being arranged in mould
High pressure chest 25 in core 21, and the multiple gases at high pressure air inlet 26 being connected to high pressure chest 25, the swollen jacket of rubber are arranged
In multiple gases at high pressure air inlet 26.High pressure chest 25 connects a gas nozzle or oil nozzle 27, high pressure expansion machine structure 23 and can be passed through
High pressure gas or high pressure oil.
The midge mould 1 is equipped with vacuum suction mechanism 11, and the vacuum suction mechanism 11 includes being arranged in smoke in slurry mould
It is evacuated air cavity 13, and several exhaust midge stomatas 14 being connected to pumping air cavity 13.The exhaust midge stomata 14 is array
It is arranged in midge mould 1.It is evacuated air cavity 13 and connects a vacuum suction gas nozzle 16.
Ventilative silk screen 12 is equipped in the midge mould 1, ventilative 12 surrounding of silk screen is suitble to have detour hook 15, the detour
Hook 15 and midge mould 1 fasten.
Due to Bao Yuehao being got in the compression of wet 3 side wall of base, then its decrement in thermoforming stage in cold extrusion process
Just smaller, it is easier to form, and yields is higher.The present invention in the mold core 21 of cold extruding die 2 by being arranged the swollen type of rubber
Set 22, the contact of paper support side wall is 1 metal covering of midge mould on one side, and the another side of paper support side wall contact is that 2 rubber of cold extruding die is swollen
The rubber film of jacket 22；After midge mould 1 and cold extruding die 2 mold, rubber film is pushed to squeeze by air pressure (or oil pressure) wet
The elastic fashion of extrusion of 3 side wall of base, its moisture is squeezed out, and squeezed it is thin, by rubber film elasticity squeeze, realize cold
In extrusion process, wet 3 side wall of base compresses thinner, and the water content of wet base 3 is less than or equal to 50%, then the decrement of thermoforming stage
Just smaller, it is easier to form, and yields is higher.
Present invention is not limited to the embodiments described above, using identical or approximation method or dress with the above embodiment of the present invention
Other swollen type preparation methods of paper mould wet pressing rubber and the swollen type device of rubber set, and obtained, in protection model of the invention
Within enclosing.
Claims (8)
1. a kind of swollen type preparation method of paper mould wet pressing rubber, which is characterized in that itself the following steps are included:
(1) prepared by mold: setting midge mould and cold extruding die, and the cold extruding die is equipped with the swollen jacket of rubber, the swollen type of rubber
It is set on the mold core of cold extruding die, the midge mould is equipped with vacuum suction mechanism, and ventilative silk screen is equipped in the midge mould；
The cold extruding die is equipped with high pressure expansion machine structure；
(2) slurrying: by pulp board plus water after pulping, it is deployed into slurry；
(3) wet base molding: for slurry on midge mould, the vacuum air pump through midge mould is configured to negative pressure, adsorbs slurry, moisture from
Ventilative silk screen is taken away by midge mould, and the vacuum adsorption molding through midge mould is wet base；
(4) cold extrusion: midge mould and cold extruding die mold, and cold extruding die is passed through high pressure gas, and rubber is swollen jacket is in high pressure gas
Under the action of expand, squeeze wet base, the moisture in wet base squeezed out, and wet base wall thickness squeezed thin；
Midge mould and cold extruding die mold in step (4), at this point, cold extruding die and wet base side wall do not have amount of compression, cold extrusion
Mould is passed through high pressure gas, and rubber is swollen, and jacket expands under the action of high pressure gas, squeezes wet base, and the moisture in wet base is squeezed out,
And wet base wall thickness is squeezed thin, and moisture in wet base is taken away through ventilative silk screen by midge mould, the moisture content in wet base is reduced,
Increase the adhesion strength of wet uncoated paper wall；
(5) hot-forming: the wet base after step (4) cold extrusion being transferred to heat supply network mould, is molded with hot optical mode, passes through pressure and temperature
It is paper support, subsequent paper support demoulding that degree, which carries out hot pressing,；
(6) trimming: by the hot-forming paper support trimming of step (5), finished product is obtained.
2. the swollen type preparation method of paper mould wet pressing rubber according to claim 1, which is characterized in that the step (4)
In, the demoulding angle of the wet base is 1~2 degree.
3. the swollen type preparation method of paper mould wet pressing rubber according to claim 1, which is characterized in that the step (4)
In, the pressure value of the high pressure gas is 0.6MPa~1.2MPa.
4. the swollen type preparation method of paper mould wet pressing rubber according to claim 1, which is characterized in that the step (4)
In, after the swollen jacket of rubber expands extruding wet base under the action of high pressure gas, the water content of wet base is less than or equal to 50%.
5. a kind of swollen type device of rubber for implementing the swollen type preparation method of paper mould wet pressing rubber described in one of Claims 1-4 4,
It is characterized in that, the swollen type device of rubber is equipped with midge mould and cold extruding die, the cold extruding die is equipped with the swollen jacket of rubber, institute
The swollen type of rubber is stated to be set on the mold core of cold extruding die.
6. the swollen type device of rubber according to claim 5, which is characterized in that the cold extruding die is equipped with the swollen jacket pressure of rubber
Plate, the swollen jacket of rubber are fixed on cold extruding die mold core by the swollen jacket pressing plate of rubber.
7. the swollen type device of rubber according to claim 6, which is characterized in that the cold extruding die mold core is equipped with the swollen type of high pressure
Mechanism, the high pressure expansion machine structure include the high pressure chest being arranged in mold core, and the multiple high pressure gas being connected to high pressure chest
Air inlet, the swollen jacket of rubber are set in multiple gases at high pressure air inlet.
8. the swollen type device of rubber according to claim 5, which is characterized in that the midge mould is equipped with vacuum suction mechanism,
The vacuum suction mechanism includes the pumping air cavity being arranged in midge mould, and several exhaust midges being connected to pumping air cavity
Stomata.
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| CN201710316431.2A CN106988161B (en) | 2017-05-08 | 2017-05-08 | A kind of paper mould wet pressing rubber is swollen type preparation method and the swollen type device of rubber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3832014A1 (en) * | 2019-12-04 | 2021-06-09 | Hsing Chung Molded Pulp Co., Ltd. | Square rotary joint |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109577107A (en) * | 2019-01-03 | 2019-04-05 | 天津茂创科技发展有限公司 | Wet base product extrusion dehydration mould assembly, plant fiber plastic suction forming apparatus and dehydrating process with the assembly |
| CN110170611A (en) * | 2019-04-03 | 2019-08-27 | 张储 | A kind of casting fibrous type casing forming technique |
| WO2022120554A1 (en) * | 2020-12-08 | 2022-06-16 | 常州市诚鑫环保科技有限公司 | Energy-saving production process method for rapid drying and dewatering of paper-plastic products |
| CN114606801A (en) * | 2020-12-08 | 2022-06-10 | 常州市诚鑫环保科技有限公司 | Energy-saving and quick-drying dehydration production process method of paper-plastic product |
| CN115852748A (en) * | 2022-10-20 | 2023-03-28 | 广东华工环源环保科技有限公司 | Cold extruding tableware producing process and equipment |
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| CN2411268Y (en) * | 1999-04-29 | 2000-12-20 | 大连绿洲食品包装有限公司 | Reciprocating forming machine for paper pulp molding product |
| CN101634124A (en) * | 2008-07-22 | 2010-01-27 | 郎旗 | Method for preparing special pulp moulding plate with convex part and mould |
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| EP3832014A1 (en) * | 2019-12-04 | 2021-06-09 | Hsing Chung Molded Pulp Co., Ltd. | Square rotary joint |
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