CN2803662Y - Multilayer hot press for MDI glued artificial board - Google Patents
Multilayer hot press for MDI glued artificial board Download PDFInfo
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- CN2803662Y CN2803662Y CN 200520041181 CN200520041181U CN2803662Y CN 2803662 Y CN2803662 Y CN 2803662Y CN 200520041181 CN200520041181 CN 200520041181 CN 200520041181 U CN200520041181 U CN 200520041181U CN 2803662 Y CN2803662 Y CN 2803662Y
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Abstract
The utility model relates to a multilayer hot press for MDI glued artificial boards, which comprises an oil pressure cylinder, multilayered hot pressboards and a synchronously closing mechanism. The utility model is characterized in that the oil pressure cylinder is provided with a hydraulic system which comprises a constant output pump with large flow, a servo valve, a high pressure pump with small flow and a pressure sensor. When the internal pressure of a hydraulic cylinder reaches 85% to 93% of the set pressure, the connection between the hydraulic system and the constant output pump is changed into the connection between the hydraulic system and the high pressure pump, so that the technical problem that the outward escaping speed of water vapor is accelerated when hot-pressing is carried out.
Description
Technical field:
The utility model is the hot press about wood-based plate, especially about using the multi-daylight press of MDI glue bond.
Background technology:
Utilize the residual straw of discarded object or crops results back after timber is processed to make artificial board, day is apparent important owing to the overcut of the forest reserves.Hot press is generally used in the manufacturing of wood-based plate at present, and the slab that is mixed with binding agent is solidified into sheet material under certain pressure and temperature.In order to improve work efficiency, hot press all is designed to suppress the polylith slab simultaneously, elongatedly once suppresses 5 blocks of sheet materials simultaneously; Its each layer heating platen can be made the slab on each layer heating platen enter hot pressing simultaneously, thereby greatly reduced the non-cutting time of hot press working by spring or hydraulic pressure synchronizing close mechanism interlock.Simultaneously, people are to the Environmental security pay attention to day by day of living space, and the formaldehyde resin binding agent that previous wood-based plate is used always is owing to the formaldehyde gas that can discharge toxic effect is substituted by the safety-type isocyanates (claiming MDI glue again) that no pernicious gas discharges just gradually.This MDI glue is different with the curing mechanism of formaldehyde resin, and it needs water and participates in solidification process.Therefore, use the wood-based plate of MDI glue in the process of being heating and curing, will produce a large amount of steam, these steam should in time be discharged in the slave plate, otherwise thereby this steam is assembled the plate internal pressure and is increased in plate, when each layer heating platen opened, after the sheet material external pressure disappears, local pressure will cause " plate bursting phenomenon " and make and produce empty in the wood-based plate or peel off in the plate, greatly reduce board quality, even cause waste product.And each layer heating platen of hot press when hot pressing with the slab cramping therebetween, steam can only be overflowed from the slab surrounding, escape limited speed, for avoiding the plate bursting phenomenon, all adopts at present to prolong hot pressing time, and steam is overflowed in the slave plate as best one can.So just reduced the productivity ratio of hot press.
The utility model content:
The utility model is to provide a kind of multi-daylight press of MDI glue wood-based plate, accelerates the technical problem that steam escapes speed when solving hot pressing.
The technical scheme that the utility model solves the problems of the technologies described above is as follows:
A kind of MDI wood-based plate multi-daylight press, comprise oil pressure cylinder, multilayer heating platen, synchronizing close mechanism, it is characterized in that: this oil pressure cylinder is provided with constant output pump, servo valve, the high-pressure pump of low discharge and the hydraulic system of pressure sensor that comprises big flow, when this hydraulic system reaches 85～93% setting pressures when the hydraulic cylinder internal pressure, will with switch to being connected of constant output pump and being connected of high-pressure pump.
It is characterized in that: this synchronizing close mechanism is the hydraulic pressure synchronizing close mechanism that includes hydraulic cylinder, and this hydraulic cylinder is connected with above-mentioned hydraulic system.
It is characterized in that: the precision of this hydraulic system pressure control is ± 1 crust.
The utility model will change the constant output pump fuel feeding of elder generation by big flow into by original single oil pump feed to the oil pressure cylinder that the multilayer heating platen is exerted pressure, its plunger is stretched out fast, and each layer heating platen drawn close mutually by hydraulic pressure synchronizing close mechanism fastly and to be put in place, one step shortened the non-cutting time of hot pressing, treat that the interior pressure of oil pressure cylinder arrives 85～93% o'clock of setting pressure, switch by pressure sensor and to make oil pressure cylinder change high pressure fuel supply pump, so that required operating pressure to be provided by low discharge.Owing to used the oil pump of low discharge, for the precision of controlled pressure easily provide may, add the setting of servo valve again, make each layer heating platen of the present utility model can impose the operating pressure of setting steadily, accurately and fast to slab.Steam drainage difficulty in slab, when pressure raises, hydraulic system is by the servo valve draining, make between each layer heating platen and the slab and slightly loosen, a large amount of steam in the slab are taken advantage of this opportunity and are overflowed between heating platen and slab, hydraulic system pressure slightly descends, and high-pressure pump, makes pressure rise again and recovers to the hydraulic system fuel feeding with low discharge.Heating platen tightly is pressed in slab therebetween again, steam can only be overflowed around slab, drainage difficulty, pressure raises again again, and servo valve draining again loosens heating platen, and steam is overflowed again in a large number in the slab, so repeatedly, the pulsation phenomenon of formation heating platen can make slab in 20 seconds hot pressing time of the every 1mm pressurization of the thickness of slab of regulation steam be drained as far as possible and defectives such as plate bursting, aliquation not take place, and productivity ratio greatly improves.Particularly the hydraulic cylinder of the synchronizing close mechanism of heating platen and the hydraulic system of oil pressure cylinder are connected together, above-mentioned heating platen pulsation is sensitiveer reliable.
Description of drawings:
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model hydraulic pressure synchronizing close structural scheme of mechanism.
Fig. 3 is the utility model hydraulic system schematic diagram.
The specific embodiment:
See also shown in Figure 1, the utility model is by frame 2, base 6, heat supply pipeline 1, heating platen 3, synchronizing close mechanism 4, oil pressure cylinder 5 compositions such as grade, its mid frame 2 is arranged on the portal structures of base 6 tops, cavity wherein then is stacked with the heating platen 3 of each layer up and down, each heating platen 3 is connected with heat supply pipeline 1 with heat conduction flexible pipe 11 respectively, pass in and out to reach heating purposes for conduction material, be positioned on the last back timber 21 and movable following back timber 22 that the superiors and undermost heating platen 3 be installed in frame 2 respectively, 22 of this time back timbers are bearing in plunger 51 tops of each oil pressure cylinder 5.Synchronizing close mechanism 4 is by the hydraulic pressure synchronizing close mechanism that comprises hydraulic cylinder 44, swing arm 42, support arm 43 (referring to Fig. 2), its frame 2 both sides that are placed in, hydraulic cylinder 44 quantity of each hydraulic pressure synchronizing close mechanism 4 are a pressed sheet quantity-2, also be the quantity-2 of the heating platen 3 of hot press, for example shown in Figure 1 is the hot press of once suppressing 5 blocks of wood-based plates, the quantity of its required heating platen 3 is 6, and then the quantity of the hydraulic cylinder 44 of its each hydraulic pressure synchronizing close mechanism 4 is 6-2=4; If once suppress 4 blocks of wood-based plates, then the quantity of the hydraulic cylinder 4 of its each hydraulic pressure synchronizing close mechanism 44 is 3, and all the other are then analogized.These pendulum wall 42 1 ends are articulated on the hold-down support 41 of last back timber 21 sides of hot press, and its other end then articulates with an end of support arm 43; The other end of this support arm 43 then is articulated in down on the hold-down support 41 of back timber 22 sides.Swing arm 42 is provided with the pivot 421 that quantity equates with the quantity of hydraulic cylinder 44, and each pivot 421 is connected with the shell of a corresponding hydraulic cylinder 44 respectively.The top of the plunger 441 of each hydraulic cylinder 44 is hinged with corresponding one deck heating platen 3 sides respectively, in order to adapt to the different distance between each hydraulic cylinder 44 and corresponding heating platen 3 pin joints, can between plunger 441 ends and heating platen 3 sides, be provided with length and adjustable T shape articulated joint.Base 6 is fixed on the ground by lower margin 61 usefulness fot screws 62.
Oil pressure cylinder 5 is arranged in the base 6, and its stick harness relies on down the bottom of back timber 22 to the interior space projection of portal frame 2, and operated by rotary motion has four uniform oil pressure cylinders 5.This oil pressure cylinder 5 is provided with the hydraulic system 7 that includes constant output pump 75 (referring to Fig. 3), high-pressure pump 74, servo valve 72 and pressure sensor 71, wherein the inlet port of the constant output pump 75 of big flow is connected with fuel tank 76 with petroleum pipeline, its oil-out is connected with oil pressure cylinder 5 through check-valves 73, the inlet port of the high-pressure pump 74 of low discharge is connected with fuel tank 76 by petroleum pipeline, and its oil-out then is connected with oil pressure cylinder 5 through servo valve 72 with petroleum pipeline; The signal circuit of pressure sensor 71 then is connected with the controller of high-pressure pump 73, constant output pump 75 respectively; The drain tap of servo valve 72 links to each other with fuel tank 76 with petroleum pipeline.After the constant output pump 75 of big flow starts, the oily fast feed pressure oil cylinder 5 that connects in the fuel tank 76, its plunger 51 is upwards released, lift on fast thereby will lean at the following back timber 22 on plunger 51 tops, make each layer heating platen 3 synchronizing closes by hydraulic pressure synchronizing close mechanism 4, a large amount of oil-feeds with oil pressure cylinder 5, the oil pressure of hydraulic system 7 rises to 85 of setting value～93% o'clock, pressure sensor 71 sends signal oil transfer pump is switched, close the constant output pump 75 of big flow, and the high-pressure pump 74 that starts low discharge is when oil pressure cylinder 5 continues fuel feeding and boosts to setting value gently, and servo valve 74 cuts out the path of high-pressure pump 74.The pressure precision of these servo valve 72 these hydraulic systems 7 of control is ± 1 crust, if pressing the steam in the slab that is clipped between each layer heating platen 3 can not discharge rapidly swimmingly, the interior pressure of its rising will put on this hydraulic system 7, make the pressure of this hydraulic system 7 surpass setting value, this moment, the drain tap of servo valve 72 was open-minded, discharge along with a small amount of oil, oil pressure cylinder 5 internal pressures are slightly reduced to below the setting value, the strength that makes on the plunger 51 top weakens and slightly loosening between each layer heating platen 3 and the slab, this moment, a large amount of high-pressure steams took advantage of the occasion to reduce pressure to external eruption, after the pressure of hydraulic system 7 is reduced to servo valve 72 control accuracy lower limits, the path of high-pressure oil pump 74 to oil pressure cylinder 5 fuel feeding closed and opened to its drain tap, makes the pressure rising of this hydraulic system 7 return to setting value.Because the steam in the slab has a time course that generates continuously, so the adjusting activity of heteropical discharging of above-mentioned steam and servo valve 72 is the states that are in constantly again and again, 3 of multilayer heating platens are in a little while and are pressed against each other, the pulse state of the microdisplacement that a little while loosens mutually again.Therefore, the utility model can shorten dramatically the drain time of MDI glue wood-based plate steam in hot pressing, and the sheet material that makes it not generate the formaldehyde resin binding agent of steam with general employing has essentially identical hot pressing time.
Above-mentioned hydraulic system also available pipe links to each other with hydraulic cylinder 44 in the hydraulic pressure synchronizing close mechanism 4, the above-mentioned variation of these hydraulic system 7 internal pressures reaches in the hydraulic cylinder 44 like this, so when hot pressing, also pulsed from each layer heating platen 3 of both sides suspention by each hydraulic cylinder 44 downwards, make the pulsation phenomenon of aforesaid each layer heating platen 3 under the water vapour pressure promotion sensitive more produce accordingly upwards to shrink thereupon with the trace that loosens.
Claims (3)
1, a kind of multi-daylight press of MDI glue wood-based plate, comprise oil pressure cylinder, multilayer heating platen, synchronizing close mechanism, it is characterized in that: this oil pressure cylinder is provided with constant output pump, servo valve, the high-pressure pump of low discharge and the hydraulic system of pressure sensor that comprises big flow, when this hydraulic system reaches 85～93% setting pressures when the hydraulic cylinder internal pressure, will with switch to being connected of constant output pump and being connected of high-pressure pump.
2, the multi-daylight press of MDI glue wood-based plate according to claim 1 is characterized in that: this synchronizing close mechanism is the hydraulic pressure synchronizing close mechanism that includes hydraulic cylinder, and this hydraulic cylinder is connected with above-mentioned hydraulic system.
3, the multi-daylight press of MDI glue wood-based plate according to claim 1 and 2 is characterized in that: the precision of this hydraulic system pressure control is ± 1 crust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520041181 CN2803662Y (en) | 2005-04-27 | 2005-04-27 | Multilayer hot press for MDI glued artificial board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520041181 CN2803662Y (en) | 2005-04-27 | 2005-04-27 | Multilayer hot press for MDI glued artificial board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2803662Y true CN2803662Y (en) | 2006-08-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520041181 Expired - Fee Related CN2803662Y (en) | 2005-04-27 | 2005-04-27 | Multilayer hot press for MDI glued artificial board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2803662Y (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102267158A (en) * | 2011-08-16 | 2011-12-07 | 合肥龙福贵木业有限公司 | Heat preservation device for multilayer hot presses |
| CN102673198A (en) * | 2011-11-28 | 2012-09-19 | 合江巨森索具包装有限公司 | Hot mould pressing machine for moulding multiple I-shaped wheel discs and trays in one time by consuming bamboo and straw wastes |
| CN102773902A (en) * | 2012-08-13 | 2012-11-14 | 广州机械科学研究院有限公司 | Control system and method of continuous artificial plate hot press |
| CN102975259A (en) * | 2012-11-07 | 2013-03-20 | 蒋克红 | Novel bamboo plate planishing device |
| CN102975257A (en) * | 2012-11-07 | 2013-03-20 | 蒋克红 | Induction device of bamboo board shaping device |
| CN103786196A (en) * | 2014-02-27 | 2014-05-14 | 鲍成基 | Multilayer board hot press |
| CN104400863A (en) * | 2014-12-02 | 2015-03-11 | 王凯 | Device for compacting cork wood to hard wood |
| CN104552527A (en) * | 2014-12-19 | 2015-04-29 | 广德平江竹业制作有限公司 | Energy-saving plate bending machine for bamboo board |
| CN104760178A (en) * | 2015-03-26 | 2015-07-08 | 成都扬中新能源科技有限公司 | Forming mechanism in manufacturing process of heating film |
| CN104760313A (en) * | 2015-03-26 | 2015-07-08 | 成都扬中新能源科技有限公司 | Press molding device |
| CN104760314A (en) * | 2015-03-26 | 2015-07-08 | 成都扬中新能源科技有限公司 | Thermoforming device |
| CN104786413A (en) * | 2015-03-26 | 2015-07-22 | 成都扬中新能源科技有限公司 | Electric heating material molding device |
| CN111070368A (en) * | 2019-12-06 | 2020-04-28 | 新沂市金达木业有限公司 | Multilayer prepress for producing composite board and working method thereof |
| CN112092135A (en) * | 2020-09-14 | 2020-12-18 | 广州飞柯科技有限公司 | Wood fiberboard pressing device and production method thereof |
-
2005
- 2005-04-27 CN CN 200520041181 patent/CN2803662Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102267158A (en) * | 2011-08-16 | 2011-12-07 | 合肥龙福贵木业有限公司 | Heat preservation device for multilayer hot presses |
| CN102673198A (en) * | 2011-11-28 | 2012-09-19 | 合江巨森索具包装有限公司 | Hot mould pressing machine for moulding multiple I-shaped wheel discs and trays in one time by consuming bamboo and straw wastes |
| CN102773902A (en) * | 2012-08-13 | 2012-11-14 | 广州机械科学研究院有限公司 | Control system and method of continuous artificial plate hot press |
| CN102975259A (en) * | 2012-11-07 | 2013-03-20 | 蒋克红 | Novel bamboo plate planishing device |
| CN102975257A (en) * | 2012-11-07 | 2013-03-20 | 蒋克红 | Induction device of bamboo board shaping device |
| CN103786196A (en) * | 2014-02-27 | 2014-05-14 | 鲍成基 | Multilayer board hot press |
| CN104400863A (en) * | 2014-12-02 | 2015-03-11 | 王凯 | Device for compacting cork wood to hard wood |
| CN104552527A (en) * | 2014-12-19 | 2015-04-29 | 广德平江竹业制作有限公司 | Energy-saving plate bending machine for bamboo board |
| CN104760178A (en) * | 2015-03-26 | 2015-07-08 | 成都扬中新能源科技有限公司 | Forming mechanism in manufacturing process of heating film |
| CN104760313A (en) * | 2015-03-26 | 2015-07-08 | 成都扬中新能源科技有限公司 | Press molding device |
| CN104760314A (en) * | 2015-03-26 | 2015-07-08 | 成都扬中新能源科技有限公司 | Thermoforming device |
| CN104786413A (en) * | 2015-03-26 | 2015-07-22 | 成都扬中新能源科技有限公司 | Electric heating material molding device |
| CN111070368A (en) * | 2019-12-06 | 2020-04-28 | 新沂市金达木业有限公司 | Multilayer prepress for producing composite board and working method thereof |
| CN112092135A (en) * | 2020-09-14 | 2020-12-18 | 广州飞柯科技有限公司 | Wood fiberboard pressing device and production method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060809 Termination date: 20140427 |