CN114032708A - Semi-dry-pressure plant fiber molding forming machine and forming method - Google Patents
Semi-dry-pressure plant fiber molding forming machine and forming method Download PDFInfo
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- CN114032708A CN114032708A CN202111480966.6A CN202111480966A CN114032708A CN 114032708 A CN114032708 A CN 114032708A CN 202111480966 A CN202111480966 A CN 202111480966A CN 114032708 A CN114032708 A CN 114032708A
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- embryo transfer
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- 238000000465 moulding Methods 0.000 title claims abstract description 31
- 239000000835 fiber Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 23
- 210000001161 mammalian embryo Anatomy 0.000 claims abstract description 254
- 238000007731 hot pressing Methods 0.000 claims abstract description 124
- 239000002002 slurry Substances 0.000 claims abstract description 106
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 86
- 238000003860 storage Methods 0.000 claims description 67
- 238000007664 blowing Methods 0.000 claims description 46
- 238000001914 filtration Methods 0.000 claims description 33
- 210000002257 embryonic structure Anatomy 0.000 claims description 25
- 238000001125 extrusion Methods 0.000 claims description 13
- 238000005086 pumping Methods 0.000 claims description 10
- 238000000967 suction filtration Methods 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 238000005265 energy consumption Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 210000004911 serous fluid Anatomy 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 27
- 238000007493 shaping process Methods 0.000 description 8
- 230000000903 blocking effect Effects 0.000 description 7
- 238000009423 ventilation Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000003825 pressing Methods 0.000 description 5
- 239000012634 fragment Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007723 die pressing method Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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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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Abstract
The invention discloses a semi-dry pressure plant fiber molding forming machine and a forming method. The forming machine comprises a rack, wherein a wet embryo transfer device, hot-press forming devices symmetrically arranged on the left side and the right side of the wet embryo transfer device and a slurry fishing device arranged below the wet embryo transfer device are arranged on the rack, the wet embryo transfer device comprises a support, a wet embryo transfer die arranged on the support and a first lifting mechanism used for driving the wet embryo transfer die to lift along the support, a guide rail moving along the left and right sides is further arranged on the rack, a sliding block capable of sliding along the guide rail and a driving mechanism used for driving the sliding block to slide are arranged on the guide rail, and the sliding block is fixedly connected with the support. The invention can reduce the moisture content of the wet embryo in the production process, thereby reducing the influence of water scale and serous fluid scraps on the hot-pressing lower die and the frame, improving the starting rate of the machine, reducing the heat energy consumption, transferring the wet embryo by moving the wet embryo transfer die left and right, keeping the hot-pressing lower die still and avoiding the pollution of a serous tank.
Description
Technical Field
The invention relates to the technical field of plant fiber molding equipment, in particular to a semi-dry-pressure plant fiber molding forming machine and a forming method.
Background
The existing plant fiber molding machine has dry pressing and wet pressing. The dry-pressing plant fiber molding forming machine adopts a cold-pressing upper die and a suction filtering die to be matched to press out a wet blank, then the wet blank is dried (or dried in the sun), and then the product is produced by die pressing and shaping.
In the production process of the wet-pressing plant fiber molding forming machine, a wet embryo transfer mold descends firstly and is matched with a suction filter mold in a slurry tank below the wet embryo transfer mold, the wet embryo is formed, the moisture content of the wet embryo is high, the wet embryo transfer mold adsorbs the wet embryo to ascend, then a hot-pressing lower mold moves to the position below the wet embryo transfer mold, the wet embryo transfer mold descends and is matched with the hot-pressing lower mold, the wet embryo is placed into the hot-pressing lower mold and is primarily shaped, finally the hot-pressing lower mold moves to the position below the hot-pressing upper mold, the hot-pressing upper mold descends and is matched with the hot-pressing lower mold, and the product is finally shaped, so that the product produced by the method has the advantages of smooth surface, attractive appearance and the following defects:
(1) because the moisture content of the wet blank is high in the production process, the exhaust hole of the hot-pressing lower die is easily blocked by water scale and slurry scraps, and the hot-pressing lower die must be frequently disassembled to wash the through hole; in addition, in the process of closing the upper hot-pressing die and the lower hot-pressing die, slurry fragments fly to machine parts such as a rack along with water vapor discharged from the outer side of the die, pollution is caused, and the machine needs to be cleaned frequently.
(2) High moisture content of the wet embryo increases heat energy consumption.
(3) When the hot-pressing lower die moves to the position below the wet embryo adsorption die, the hot-pressing lower die is positioned right above the stock tank, and impurities such as oil stains and scrap iron are easily dropped into the stock tank, so that the stock tank is polluted, and the product percent of pass is reduced.
Disclosure of Invention
The invention aims to solve the technical problems and provides a semi-dry-pressed plant fiber molding forming machine and a forming method, which can reduce the moisture content of a wet embryo in a production process, thereby reducing the influence of water scale and serous fluid scraps on a hot-pressing lower die and a frame, reducing the heat energy consumption, enabling a wet embryo transfer die to move left and right to transfer the wet embryo, enabling the hot-pressing lower die to be fixed, and avoiding the pollution of a serous tank.
In order to solve the problems, the invention adopts the following technical scheme:
the invention relates to a semi-dry pressure plant fiber molding forming machine, which comprises a frame, wherein a wet embryo transfer device, hot-pressing forming devices symmetrically arranged at the left side and the right side of the wet embryo transfer device and a slurry fishing device arranged below the wet embryo transfer device are arranged on the frame, the wet embryo transfer device comprises a bracket, a wet embryo transfer die arranged on the bracket and a first lifting mechanism used for driving the wet embryo transfer die to lift along the bracket, the hot-pressing forming device comprises a hot-pressing lower die, a hot-pressing upper die and a second lifting mechanism used for driving the hot-pressing upper die to lift, the slurry fishing device comprises a slurry tank, a suction filter die positioned in the slurry tank and a third lifting mechanism used for driving the suction filter die to lift, a guide rail along the left-right direction is also arranged on the frame, a slide block capable of sliding along the guide rail and a driving mechanism used for driving the slide block to slide are arranged on the guide rail, and the slide block is fixedly connected with the bracket, the wet embryo transfer mold can move among the upper part of the hot pressing lower mold on the left side, the upper part of the slurry tank and the upper part of the hot pressing lower mold on the right side along the guide rail.
In this scheme, the guide rail setting is in the frame and through left hot pressing lower mould, dressing trough, the hot pressing lower mould on right side, and the support removes along the guide rail and can makes wet embryo transfer mould can follow the guide rail and remove between left hot pressing lower mould top, dressing trough top, the hot pressing lower mould top on right side.
Initially, the wet embryo transfer mold is positioned above the slurry tank, the suction and filtration mold descends to the slurry in the slurry tank to absorb the slurry, and after the slurry absorption is finished, the suction and filtration mold ascends to leave the slurry and form wet embryos on the suction and filtration mold; the wet embryo transfer die descends and is combined with the suction and filtration die, the wet embryo transfer die extrudes the wet embryo on the suction and filtration die, the wet embryo is extruded with water, and the water content of the formed wet embryo is reduced; pumping air to the wet embryo transfer mold, sucking the formed wet embryo by the wet embryo transfer mold, and simultaneously pumping away the moisture and water vapor entering the wet embryo transfer mold in the mold combination process of the wet embryo transfer mold and the suction and filtration mold; the wet embryo transfer mold moves to the upper part of the hot pressing lower mold on one side along the guide rail, the wet embryo transfer mold descends to a position which is close to the hot pressing lower mold, the wet embryo transfer mold blows air to the wet embryo, meanwhile, the hot pressing lower mold sucks air in vacuum, the wet embryo falls onto the hot pressing lower mold from the wet embryo transfer mold, and the wet embryo is attached to the cavity of the hot pressing lower mold; and finally, moving the wet embryo transfer mold to the upper part of the slurry tank along the guide rail to continuously absorb new wet embryos, descending the upper hot-pressing mold above the lower hot-pressing mold with the wet embryos to be matched with the lower hot-pressing mold, heating and forming the wet embryos into products, then ascending the upper hot-pressing mold, and taking the products away by a grabbing mechanism.
This scheme has reduced wet embryo moisture content in process of production to reduce the influence of incrustation scale, thick liquid piece to hot pressing lower mould, frame, reduced heat energy consumption, wet embryo transfer mould can remove the wet embryo of transfer about can, and the hot pressing lower mould is motionless, has avoided impurity pollution such as greasy dirt, iron fillings on the dressing trough by the hot pressing lower mould.
As preferred, wet embryo shifts mould includes first plate body and apron, first plate body bottom surface is equipped with a plurality of convex wet embryo shaping faces downwards, the outer fringe of wet embryo shaping face is equipped with the ring of ventilating, the ring of ventilating surrounds annular a plurality of air vents by arranging along wet embryo shaping face outer fringe and constitutes, first plate body top surface is equipped with the recess with wet embryo shaping face corresponding position, the ring top of ventilating is located and corresponds the recess, be equipped with the aqua storage tank in the recess, the aqua storage tank is located the ring inboard of ventilating that corresponds wet embryo shaping face, the ring top of ventilating place plane is connected with corresponding the aqua storage tank through the annular inclined plane of downward sloping, the apron lid is at first plate body top surface, be equipped with the vent line with the recess intercommunication on the apron.
The ventilation pipeline is connected with an external air suction device and an external air blowing device, and the ventilation holes can suck air and blow air. When the wet embryo transfer die and the suction and filtration die are closed, the air exhaust device exhausts air to the wet embryo transfer die, so that the wet embryo is sucked on a wet embryo forming surface of the wet embryo transfer die. In the process that the wet embryo is transferred to the hot pressing lower die on one side by the wet embryo transfer die, the wet embryo transfer die moves to the position above the hot pressing lower die and then descends to the position close to the hot pressing lower die, the air blowing device blows air to the wet embryo transfer die to blow the wet embryo to the hot pressing lower die, and the whole process is not in contact with the hot pressing lower die.
When the wet embryo is sucked to the wet embryo molding surface, part of the extruded water is sucked to the periphery of the top of the vent hole, although most of the water and the water vapor in the wet embryo transfer mold can be sucked away by the air exhaust device, part of the water remains around the top of the vent hole, in addition, the water vapor content in the blown gas is also high, and water drops are easily condensed around the top of the vent hole. The aqua storage tank is used for storing the water droplet, the annular inclined plane is convenient for the water droplet around the air vent top to flow in the aqua storage tank, blow to wet embryo transfer mould at gas blowing device and blow when blowing wet embryo to this hot pressing lower mould, gas that gas blowing device blew out blows to the air vent top, can blow in the aqua storage tank with the water droplet around the air vent top, and can not blow into the air vent with the water droplet, avoid the water droplet around the air vent top to be blown to wet embryo, avoid causing defects such as product watermark to appear, can reduce wet embryo moisture content simultaneously, water in the aqua storage tank can be taken away when air exhaust device shifts the mould to bleed to wet embryo.
Preferably, adjacent grooves are connected by a connecting groove. The water storage tank is an inwards-concave stepped tank. The ventilation ring is in a ring shape. The included angle between the annular inclined plane and the horizontal plane is 20-30 degrees.
As preferred, inhale and strain the mould including inhaling filter bottom plate and setting up inhaling filter mold core in inhaling filter bottom plate top, inhale filter bottom plate and include the second plate body, second plate body top surface is equipped with inhales the filter tank, inhale filter tank bottom surface evenly distributed and have a plurality of filtration chamber of inhaling, the center of inhaling the filter chamber is equipped with inhales the filtration pore, inhale the baffle that the filter chamber top still was equipped with the level setting, the baffle is located directly over inhaling the filtration pore, second plate body bottom surface is equipped with and inhales the pipe that absorbs water of filtration pore intercommunication.
The suction pipe is connected with an external vacuum negative pressure device. When the slurry is sucked, the vacuum negative pressure device sucks the slurry through the water suction pipe, moisture in the slurry enters the suction filter tank and is pumped away through the suction filter holes, and the baffle plates are arranged right above the suction filter holes and are uniformly distributed in the suction filter cavity, so that the vacuum degree on the suction filter screen of the suction filter mold core is more uniform, the slurry is more uniform, and the consistency of the thickness and the weight of a product are ensured.
Preferably, the suction filter cavity is inclined downwards from outside to inside. Ensure no water accumulation in the suction filter tank and effectively reduce the moisture content of the wet embryos during transfer.
Preferably, the suction filter cavity is funnel-shaped. The baffle is connected with the suction filter cavity through a connecting column. The baffle is rectangular.
Preferably, a stop block is arranged between adjacent suction filter cavities. So that the pulp suction is more uniform.
Preferably, the center of the suction filter groove is provided with a gas blowing hole, and the bottom surface of the second plate body is provided with a gas blowing pipeline communicated with the gas blowing hole.
Preferably, the slurry tank comprises a tank body, a slurry storage tank is arranged on the tank body, the slurry storage tank comprises a slurry storage chamber and slurry overflow chambers symmetrically arranged on the front side and the rear side of the slurry storage chamber, the slurry overflow chambers are separated from the slurry storage chamber through slurry overflow plates, the left end and the right end of each slurry overflow plate are bent into an arc shape towards one side of each slurry storage chamber, slurry inlet openings are formed in the lower portions of the left side wall and the right side wall of the tank body and communicated with the slurry storage chambers, slurry overflow openings are formed in the positions, corresponding to the slurry overflow chambers, of the bottom of the tank body and communicated with the corresponding slurry overflow chambers, and the suction filter die is located in the slurry overflow chambers.
The thick liquid from advancing the thick liquid mouth and getting into the pulp storage chamber, the thick liquid fills up and gets into the overfall room from the overfall board upper end after the pulp storage chamber, later discharge the dressing trough device through the overfall mouth, it is located the side of pulp storage chamber to advance the thick liquid, the side advances thick liquid and is convenient for thick liquid circulation flow in the dressing trough, guaranteed that thick liquid concentration is even, separate through the overfall board between overfall room and the pulp storage chamber, both ends are bent into the arc to pulp storage chamber one side about the overfall board, the thick liquid of being convenient for flows, the difficult long-pending thick liquid in no dead angle prevents the thick liquid pollution.
Preferably, the left side and the right side of the bottom surface of the pulp storage chamber are symmetrically provided with air blowing pipes, two ends of each air blowing pipe are provided with air blowing ports, the middle of each air blowing pipe is provided with an air inlet, and the bottom of the box body is provided with an air inlet pipeline communicated with the air inlet.
The air blowing pipe blows air to the pulp storage chamber, so that the circular flow of the pulp is better ensured. According to different slurry concentrations, the blowing frequency and the time length are reasonably controlled to achieve the optimal slurry and reasonable energy consumption.
Preferably, the height of the pulp overflowing plate is smaller than the depth of the pulp storage tank.
Preferably, a horizontally arranged pulp blocking cover plate is arranged above the pulp overflowing chamber, the pulp blocking cover plate is connected with the box body, and the height of the pulp blocking cover plate is higher than that of the top of the pulp overflowing plate.
Preferably, the bottom of the box body is provided with a sewage draining outlet communicated with the pulp storage chamber.
Preferably, the slurry inlet on the left side wall of the box body is positioned at the front lower part of the left side wall of the box body, and the slurry inlet on the right side wall of the box body is positioned at the rear lower part of the right side wall of the box body.
Preferably, the third lifting mechanism comprises lifting assemblies symmetrically arranged on the left side and the right side of the stock tank and a synchronizing assembly used for enabling the lifting assemblies to synchronously lift, each lifting assembly comprises a hydraulic oil cylinder and a connecting piece, the hydraulic oil cylinders are vertically arranged, the lifting ends of the hydraulic oil cylinders are connected with the suction filter die through the connecting pieces, and the two connecting pieces are connected through the synchronizing assembly. The synchronous component enables the two lifting components to lift synchronously, and stable lifting of the stock chest is guaranteed.
The invention discloses a molding and forming method of semi-dry pressure plant fiber, which is used for the molding and forming machine of the semi-dry pressure plant fiber and comprises the following steps:
s1: the suction filter die descends into the slurry in the slurry tank to absorb slurry, and after the slurry absorption is finished, the suction filter die ascends to leave the slurry, and wet blanks are formed on the suction filter die;
s2: the wet embryo transfer die descends and is combined with the suction and filtration die, the wet embryo transfer die extrudes the wet embryo on the suction and filtration die to form the wet embryo, and meanwhile, the suction and filtration bottom plate is pumped to suck the water extruded from the wet embryo and flowing into the suction and filtration bottom plate;
s3: pumping air to the wet embryo transfer mold, sucking the formed wet embryo by the wet embryo transfer mold, and simultaneously pumping away the moisture and water vapor entering the wet embryo transfer mold in the mold combination process of the wet embryo transfer mold and the suction and filtration mold;
s4: the wet embryo transfer mold moves to the upper part of the hot pressing lower mold on one side along the guide rail, the wet embryo transfer mold descends to a position 0.8-2 mm away from the hot pressing lower mold, the wet embryo transfer mold blows air to the wet embryo, meanwhile, the hot pressing lower mold sucks air, and the wet embryo falls onto the hot pressing lower mold from the wet embryo transfer mold;
s5: and the wet embryo transfer mold moves to the upper part of the slurry tank along the guide rail to continuously absorb new wet embryos, the hot pressing upper mold above the hot pressing lower mold with the wet embryos descends to be matched with the hot pressing lower mold, the wet embryos are heated and formed into products, then the hot pressing upper mold ascends, and the grabbing mechanism takes the products away.
In this scheme, when wet embryo transfer mould closes the mould with inhaling the considering mould, wet embryo on the considering mould is inhaled in the extrusion of wet embryo transfer mould, extrudees moisture with wet embryo, reduces the moisture content of the wet embryo of shaping, and simultaneously when the extrusion moisture, to inhaling the filter bottom plate and bleeding, the moisture that is extruded the inflow and inhales the filter bottom plate with wet embryo is siphoned away, further reduces the moisture content of wet embryo. When wet embryo transfer mould withheld fashioned wet embryo, partial moisture that extrudes can be sucked around the air vent top, though air exhaust device can suck away most moisture, steam in the wet embryo transfer mould, still have partial moisture to remain around the air vent top, the steam content in the gas of blowing in addition is also great, condenses out the water droplet easily around the air vent top, the water droplet of condensing out can flow into the aqua storage tank. When the air blowing device blows air to the wet embryo transfer die to blow the wet embryo to the hot pressing lower die, when the air blown by the air blowing device blows the top of the air vent, water drops around the top of the air vent can be blown into the water storage tank, the water drops can not be blown into the air vent, the water drops around the top of the air vent are prevented from being blown to the wet embryo, the water content of the wet embryo is prevented from being improved, and water in the water storage tank can be pumped away when the air pumping device pumps air to the wet embryo transfer die. Through the treatment of the steps, the moisture content of the wet blank can be maintained in a lower stable state, so that the influence of water scale and slurry fragments on the hot-pressing lower die and the rack is reduced, and the heat energy consumption is reduced.
In the step S4, the wet embryo transfer mold blows air to the wet embryo, and vacuum suction of the lower hot-pressing mold can ensure that the wet embryo is attached to the mold cavity of the lower hot-pressing mold when being transferred to the lower hot-pressing mold.
Preferably, in the step S2, the extrusion force of the wet embryo on the wet embryo transfer die extrusion suction die is 10-16MPa, and the extrusion time is 2-4 seconds, so that the water content of the wet embryo reaches 58% -63%.
Preferably, in the step S5, the temperature of the lower hot-pressing mold is 160-. The water content of the product after heating and forming is 3-5%.
The invention has the beneficial effects that: (1) the wet embryo moisture content in the production process can be reduced, so that the influence of water scales and slurry fragments on the hot-pressing lower die and the rack is reduced, and the heat energy consumption is reduced. (2) The wet embryo transfer mold can move left and right to transfer wet embryos, and the hot pressing lower mold is not moved, so that the pulp tank is prevented from being polluted.
Drawings
FIG. 1 is a schematic structural view of an embodiment;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a schematic diagram of the structure of a wet embryo transfer mold;
FIG. 4 is a schematic view of the bottom surface of a wet embryo transfer mold;
FIG. 5 is a top view of a wet embryo transfer mold;
FIG. 6 is a cross-sectional view A-A of FIG. 5;
FIG. 7 is a schematic structural view of the slurry taking device;
FIG. 8 is a schematic view of the construction of a suction strainer plate;
FIG. 9 is a schematic view of the bottom structure of the suction strainer plate;
FIG. 10 is a top view of the suction strainer plate;
FIG. 11 is a cross-sectional view B-B of FIG. 10;
FIG. 12 is a schematic view of the structure of a vat;
FIG. 13 is a schematic view showing the bottom structure of the vat;
fig. 14 is a plan view of the vat.
In the figure: 1. the device comprises a rack, 2, a wet embryo transfer device, 3, a hot-press forming device, 4, a slurry fishing device, 5, a guide rail, 6 and a slide block; 21. the device comprises a bracket, 22, a wet embryo transfer die, 23, a first lifting mechanism, 31, a hot-pressing lower die, 32, a hot-pressing upper die, 33, a second lifting mechanism, 40, a pulp tank, 42, a suction filter die, 44 and a third lifting mechanism;
221. the first plate body, 222, the cover plate, 223, the wet blank forming surface, 224, the ventilation ring, 225, the ventilation hole, 226, the water storage tank, 227, the annular inclined surface, 228, the groove, 229 and the connecting groove; 421. the suction filter comprises a suction filter bottom plate, 422, a suction filter mold core, 423, a second plate body, 424, a suction filter groove, 425, a suction filter cavity, 426, a suction filter hole, 427, a baffle, 428, a water suction pipe, 429, a stop block, 430, an air blowing hole, 431 and an air blowing pipeline; 401. the device comprises a box body, 402, a pulp storage chamber, 403, a pulp overflow chamber, 404, a pulp overflow plate, 405, a pulp inlet, 406, a pulp overflow port, 407, a pulp blocking cover plate, 408, an air blowing pipe, 409, an air blowing port, 410, an air inlet pipeline, 411 and a sewage outlet; 441. hydraulic cylinder, 442, connection, 443, synchronizing assembly.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example (b): the semi-dry pressure plant fiber molding forming machine of the embodiment comprises a frame 1, as shown in fig. 1 and fig. 2, the frame 1 is provided with a wet embryo transfer device 2, hot press forming devices 3 symmetrically arranged at the left and right sides of the wet embryo transfer device 2, and a slurry scooping device 4 arranged below the wet embryo transfer device 2, the wet embryo transfer device 2 comprises a support 21, a wet embryo transfer mold 22 arranged on the support 21, and a first lifting mechanism 23 for driving the wet embryo transfer mold 22 to lift along the support 21, the hot press forming device 3 comprises a lower hot press mold 31, an upper hot press mold 32, and a second lifting mechanism 33 for driving the upper hot press mold 32 to lift, the slurry scooping device 4 comprises a slurry tank 40, a suction filter mold 42 positioned in the slurry tank 40, and a third lifting mechanism 44 for driving the suction filter mold 42 to lift, the frame 1 is further provided with guide rails 5 running along the left and right directions, the guide rails 5 are provided with sliders 6 capable of sliding along the guide rails 5 and a driving mechanism for driving the sliders 6 to slide, the slide block 6 is fixedly connected with the bracket 21, and the wet embryo transfer die 22 can move between the upper part of the left hot pressing lower die, the upper part of the stock chest and the upper part of the right hot pressing lower die along the guide rail 5.
As shown in fig. 3, 4, 5, and 6, the wet embryo transfer mold 22 includes a first plate 221 and a cover plate 222, the first plate 221 has a plurality of wet embryo forming surfaces 223 protruding downward, the outer edges of the wet embryo forming surfaces 223 are provided with vent rings 224, the vent rings 224 are circular, the vent rings 224 are composed of a plurality of vent holes 225 arranged along the outer edges of the wet embryo forming surfaces 223 and enclosing into a ring, a groove 228 is provided at the top surface of the first plate 221 corresponding to the wet embryo forming surfaces 223, adjacent grooves 228 are communicated with each other through a connecting groove 229, the top of the vent ring 224 is located in the corresponding groove 228, a water storage groove 226 is provided in the groove 228, the water storage groove 226 is an inward recessed step groove, the water storage groove 226 is located at the inner side of the vent ring 224 corresponding to the wet embryo forming surfaces 223, the plane at the top of the vent ring 224 is connected with the corresponding water storage groove 226 through a downward inclined annular slope 227, the cover plate 222 covers the top surface of the first plate 221, the cover plate 222 is provided with a vent line communicated with the groove 228, and the included angle between the annular inclined surface 227 and the horizontal plane is 20-30 degrees.
The ventilation pipeline on the cover plate is connected with an external air suction device and an air blowing device, and the ventilation holes can suck air and blow air. When the wet embryo transfer die and the suction and filtration die are closed, the air exhaust device exhausts air to the wet embryo transfer die, so that the wet embryo is sucked on a wet embryo forming surface of the wet embryo transfer die. In the process that the wet embryo is transferred to the hot pressing lower die on one side by the wet embryo transfer die, the wet embryo transfer die moves to the position above the hot pressing lower die and then descends to the position close to the hot pressing lower die, the air blowing device blows air to the wet embryo transfer die to blow the wet embryo to the hot pressing lower die, and the whole process is not in contact with the hot pressing lower die.
When the wet embryo is sucked to the wet embryo molding surface, part of the extruded water is sucked to the periphery of the top of the vent hole, although most of the water and the water vapor in the wet embryo transfer mold can be sucked away by the air exhaust device, part of the water remains around the top of the vent hole, in addition, the water vapor content in the blown gas is also high, and water drops are easily condensed around the top of the vent hole. The aqua storage tank is used for storing the water droplet, the annular inclined plane is convenient for the water droplet around the air vent top to flow in the aqua storage tank, blow to wet embryo transfer mould at gas blowing device and blow when blowing wet embryo to this hot pressing lower mould, gas that gas blowing device blew out blows to the air vent top, can blow in the aqua storage tank with the water droplet around the air vent top, and can not blow into the air vent with the water droplet, avoid the water droplet around the air vent top to be blown to wet embryo, avoid causing defects such as product watermark to appear, can reduce wet embryo moisture content simultaneously, water in the aqua storage tank can be taken away when air exhaust device shifts the mould to bleed to wet embryo.
As shown in fig. 8, 9, 10, and 11, the suction filter die 42 includes a suction filter bottom plate 421 and a suction filter die core 422 disposed above the suction filter bottom plate 421, the suction filter bottom plate 421 includes a second plate 423, a suction filter groove 424 is disposed on a top surface of the second plate 423, a plurality of suction filter cavities 425 are uniformly distributed on a bottom surface of the suction filter groove 424, a suction filter hole 426 is disposed at a center of the suction filter cavity 425, a baffle 427 disposed horizontally is further disposed above the suction filter cavity 425, the baffle 427 is disposed right above the suction filter hole 426, and a water suction pipe 428 communicated with the suction filter hole 426 is disposed on a bottom surface of the second plate 423. The suction filter cavity 425 is inclined downwards from outside to inside, the suction filter cavity 425 is in a funnel shape, the baffle 427 is connected with the suction filter cavity 425 through a connecting column, the baffle 427 is in a rectangular shape, a stopper 429 is arranged between the adjacent suction filter cavities 425, a blowing hole 430 is formed in the center of the suction filter groove 424, and a blowing pipeline 431 communicated with the blowing hole 430 is formed in the bottom surface of the second plate body 423.
The suction pipe is connected with an external vacuum negative pressure device. When inhaling the thick liquid, vacuum negative pressure device inhales the thick liquid through the pipe that absorbs water, and moisture in the thick liquid gets into the suction filtration groove, is taken away through inhaling the filtration hole, because inhale and strain chamber evenly distributed and every and inhale and strain all being equipped with the baffle directly over the hole, adjacent inhale and strain and be equipped with the dog between the chamber, so inhale and strain the vacuum on the filter screen of filter core more even for inhale the thick liquid more even, guarantee that the product is thin and thick unanimous, gram weight is stable. The suction filter cavity is inclined downwards from outside to inside, so that no accumulated water is in the suction filter tank, and the moisture content of the wet embryos during transfer is effectively reduced.
In this scheme, the guide rail setting is in the frame and through left hot pressing lower mould, dressing trough, the hot pressing lower mould on right side, and the support removes along the guide rail and can makes wet embryo transfer mould can follow the guide rail and remove between left hot pressing lower mould top, dressing trough top, the hot pressing lower mould top on right side. The semi-dry pressure plant fiber molding forming machine is controlled by the controller to work, and the external air suction device, the air blowing device and the vacuum negative pressure device are also controlled by the controller to work.
Initially, the wet embryo transfer mold is positioned above the slurry tank, the suction and filtration mold descends to the slurry in the slurry tank to absorb the slurry, and after the slurry absorption is finished, the suction and filtration mold ascends to leave the slurry and form wet embryos on the suction and filtration mold; the wet embryo transfer die descends and is combined with the suction and filtration die, the wet embryo transfer die extrudes the wet embryo on the suction and filtration die, the wet embryo is extruded with water, and the water content of the formed wet embryo is reduced; pumping air to the wet embryo transfer mold, sucking the formed wet embryo by the wet embryo transfer mold, and simultaneously pumping away the moisture and water vapor entering the wet embryo transfer mold in the mold combination process of the wet embryo transfer mold and the suction and filtration mold; the wet embryo transfer mold moves to the upper part of the hot pressing lower mold on one side along the guide rail, the wet embryo transfer mold descends to a position which is close to the hot pressing lower mold, the wet embryo transfer mold blows air to the wet embryo, meanwhile, the hot pressing lower mold sucks air in vacuum, the wet embryo falls onto the hot pressing lower mold from the wet embryo transfer mold, and the wet embryo is attached to the cavity of the hot pressing lower mold; and finally, moving the wet embryo transfer mold to the upper part of the slurry tank along the guide rail to continuously absorb new wet embryos, descending the upper hot-pressing mold above the lower hot-pressing mold with the wet embryos to be matched with the lower hot-pressing mold, heating and forming the wet embryos into products, then ascending the upper hot-pressing mold, and taking the products away by a grabbing mechanism.
When the wet embryo transfer die and the suction and filtration die are combined, the wet embryo transfer die extrudes the wet embryo on the suction and filtration die, so that moisture is extruded out of the wet embryo, and the moisture content of the formed wet embryo is reduced; the suction filter cavity which is inclined downwards from outside to inside is arranged on the suction filter bottom plate, so that no accumulated water is in the suction filter tank when the vacuum negative pressure device sucks water in the suction filter bottom plate, and the moisture content of wet embryos during transfer is effectively reduced; in the process of transferring the wet embryos by the wet embryo transfer mold, the water storage tank structure is arranged, so that the phenomenon that water drops around the tops of the air holes are blown to the wet embryos by blowing air to the wet embryo transfer mold by the air blowing device is avoided, and the wet embryos are maintained in a low water content state. This scheme is through above-mentioned structural design, the moisture content of wet embryo in the production process has effectively been reduced, make wet embryo maintain at low moisture content state, thereby go up mould and hot pressing lower mould compound die stoving wet embryo in-process in the hot pressing, the incrustation scale of production, the thick liquid piece is less, the exhaust hole of hot pressing lower mould is difficult for being stopped up, the incrustation scale in the frame, the thick liquid piece also can be less, thereby the cleaning cycle of hot pressing lower mould and frame has been prolonged, present wet pressure plant fiber molding machine generally need wash every two weeks, and the plant fiber molding machine of this scheme washs once every three months.
In addition, the low moisture content of the wet blank can also reduce the heat energy consumption, the wet blank transfer mold can move left and right to transfer the wet blank, the hot-pressing lower mold is not moved, and the slurry tank is prevented from being polluted by impurities such as oil stains, scrap iron and the like on the hot-pressing lower mold.
As shown in fig. 12, 13 and 14, the slurry tank 40 includes a tank body 401, a slurry storage tank is disposed on the tank body 401, the slurry storage tank includes a slurry storage chamber 402 and slurry overflow chambers 403 symmetrically disposed on the front and rear sides of the slurry storage chamber 402, the slurry overflow chambers 403 are separated from the slurry storage chamber 402 by slurry overflow plates 404, the left and right ends of the slurry overflow plates 404 are bent into an arc shape toward one side of the slurry storage chamber 402, slurry inlet ports 405 are disposed on the lower portions of the left and right side walls of the tank body 401, the slurry inlet ports 405 are communicated with the slurry storage chamber 402, slurry overflow ports 406 are disposed at positions of the bottom of the tank body 401 corresponding to the slurry overflow chambers 403, the slurry overflow ports 406 are communicated with the corresponding slurry overflow chambers, a drain outlet 411 communicated with the slurry storage chamber 402 is disposed at the bottom of the tank body 401, and the suction filter die 42 is disposed in the slurry overflow chambers 403.
The height of the pulp-overflowing plate 404 is less than the depth of the pulp storage tank. A horizontally arranged pulp blocking cover plate 407 is arranged above the pulp overflow chamber 403, the pulp blocking cover plate 407 is connected with the box body 401, and the height of the pulp blocking cover plate 407 is higher than the top height of the pulp overflow plate 404. The slurry inlet 405 on the left side wall of the box body 401 is positioned at the front lower part of the left side wall of the box body 401, and the slurry inlet on the right side wall of the box body 401 is positioned at the rear lower part of the right side wall of the box body 401. Air blowing pipes 408 are symmetrically arranged on the left side and the right side of the bottom surface of the pulp storage chamber 402, air blowing ports 409 are arranged at the two ends of each air blowing pipe 408, an air inlet is arranged in the middle of each air blowing pipe 408, and an air inlet pipeline 410 communicated with the air inlet is arranged at the bottom of the box body 401.
The thick liquid from advancing the thick liquid mouth and getting into the pulp storage chamber, the thick liquid fills up and gets into the overfall room from the overfall board upper end after the pulp storage chamber, later discharge the dressing trough device through the overfall mouth, it is located the side of pulp storage chamber to advance the thick liquid, the side advances thick liquid and is convenient for thick liquid circulation flow in the dressing trough, guaranteed that thick liquid concentration is even, separate through the overfall board between overfall room and the pulp storage chamber, both ends are bent into the arc to pulp storage chamber one side about the overfall board, the thick liquid of being convenient for flows, the difficult long-pending thick liquid in no dead angle prevents the thick liquid pollution. The air blowing pipe blows air to the pulp storage chamber, so that the circular flow of the pulp is better ensured. According to different slurry concentrations, the blowing frequency and the time length are reasonably controlled to achieve the optimal slurry and reasonable energy consumption.
As shown in fig. 7, the third lifting mechanism 44 includes lifting units symmetrically disposed on the left and right sides of the vat 40 and a synchronizing unit 443 for synchronously lifting the lifting units, the lifting units include hydraulic cylinders 441 and connectors 442, the hydraulic cylinders 441 are vertically disposed, the lifting ends of the hydraulic cylinders 441 are connected to the suction filter die 42 through the connectors 442, and the connectors 442 are connected through the synchronizing unit 443. The synchronous component enables the two lifting components to lift synchronously, and stable lifting of the stock chest is guaranteed.
The molding method of the semi-dry pressure plant fiber of the embodiment is used for the molding machine of the semi-dry pressure plant fiber, and comprises the following steps:
s1: the suction filter die descends into the slurry in the slurry tank to absorb slurry, and after the slurry absorption is finished, the suction filter die ascends to leave the slurry, and wet blanks are formed on the suction filter die;
s2: the wet embryo transfer mold descends and is combined with the suction filtration mold, the wet embryo transfer mold extrudes and sucks the wet embryo on the suction filtration mold to form the wet embryo, meanwhile, the vacuum negative pressure device exhausts air to the suction filtration bottom plate to suck the water extruded from the wet embryo flowing into the suction filtration bottom plate, the extrusion force of the wet embryo on the extrusion and suction filtration mold of the wet embryo transfer mold is 10-16MPa, the extrusion time is 2-4 seconds, and the water content of the wet embryo reaches 58% -63%;
s3: the air extractor extracts air from the wet embryo transfer mold, the wet embryo transfer mold absorbs the formed wet embryo, and meanwhile, moisture and steam entering the wet embryo transfer mold are extracted in the mold combination process of the wet embryo transfer mold and the absorption and filtration mold;
s4: the wet embryo transfer mold moves to the upper part of the hot pressing lower mold on one side along the guide rail, the wet embryo transfer mold descends to a position 0.8-2 mm away from the hot pressing lower mold, the air blowing device blows air to the wet embryo through the wet embryo transfer mold, meanwhile, the hot pressing lower mold sucks air, and the wet embryo falls onto the hot pressing lower mold from the wet embryo transfer mold;
s5: the wet embryo transfer mould moves to the upper side of the size tank along the guide rail to continue to absorb new wet embryos, the hot-pressing upper mould above the hot-pressing lower mould with the wet embryos descends to be matched with the hot-pressing lower mould, the wet embryos are heated and formed into products, then the hot-pressing upper mould ascends, the products are taken away by the grabbing mechanism, the temperature of the hot-pressing lower mould is 190 ℃, the temperature of the hot-pressing upper mould is 190 ℃, the matching time is 10-25 seconds, and the water content of the products after being heated and formed is 3% -5%.
In this scheme, when wet embryo transfer mould closes the mould with inhaling the considering mould, wet embryo on the considering mould is inhaled in the extrusion of wet embryo transfer mould, extrudees moisture with wet embryo, reduces the moisture content of the wet embryo of shaping, and simultaneously when the extrusion moisture, to inhaling the filter bottom plate and bleeding, the moisture that is extruded the inflow and inhales the filter bottom plate with wet embryo is siphoned away, further reduces the moisture content of wet embryo. When wet embryo transfer mould withheld fashioned wet embryo, partial moisture that extrudes can be sucked around the air vent top, though air exhaust device can suck away most moisture, steam in the wet embryo transfer mould, still have partial moisture to remain around the air vent top, the steam content in the gas of blowing in addition is also great, condenses out the water droplet easily around the air vent top, the water droplet of condensing out can flow into the aqua storage tank. When the air blowing device blows air to the wet embryo transfer die to blow the wet embryo to the hot pressing lower die, when the air blown by the air blowing device blows the top of the air vent, water drops around the top of the air vent can be blown into the water storage tank, the water drops can not be blown into the air vent, the water drops around the top of the air vent are prevented from being blown to the wet embryo, the water content of the wet embryo is prevented from being improved, and water in the water storage tank can be pumped away when the air pumping device pumps air to the wet embryo transfer die. Through the treatment of the steps, the moisture content of the wet blank can be maintained in a lower stable state, so that the influence of water scale and slurry fragments on the hot-pressing lower die and the rack is reduced, and the heat energy consumption is reduced.
In the step S4, the wet embryo transfer mold blows air to the wet embryo, and vacuum suction of the lower hot-pressing mold can ensure that the wet embryo is attached to the mold cavity of the lower hot-pressing mold when being transferred to the lower hot-pressing mold. The hot pressing lower die is connected with an external vacuum negative pressure module, and the vacuum negative pressure module sucks air in vacuum to enable the hot pressing lower die to generate suction to wet embryos above the hot pressing lower die.
Claims (10)
1. The semi-dry-pressure plant fiber molding forming machine is characterized by comprising a rack (1), wherein a wet embryo transfer device (2), hot-pressing forming devices (3) symmetrically arranged at the left side and the right side of the wet embryo transfer device (2) and a slurry fishing device (4) arranged below the wet embryo transfer device (2) are arranged on the rack (1), the wet embryo transfer device (2) comprises a support (21), wet embryo transfer molds (22) arranged on the support (21) and a first lifting mechanism (23) used for driving the wet embryo transfer molds (22) to lift along the support (21), the hot-pressing forming device (3) comprises a lower hot-pressing mold (31), an upper hot-pressing mold (32) and a second lifting mechanism (33) used for driving the upper hot-pressing mold (32) to lift, the slurry fishing device (4) comprises a slurry tank (40), a filter suction mold (42) positioned in the slurry tank (40) and a third lifting mechanism (44) used for driving the filter suction mold (42) to lift, still be equipped with on frame (1) along controlling guide rail (5) that move towards, be equipped with on guide rail (5) and follow gliding slider (6) of guide rail (5) and be used for driving gliding actuating mechanism of slider (6), slider (6) and support (21) fixed connection, wet embryo transfer mould (2) can be followed guide rail (5) and removed between left hot pressing lower mould top, dressing trough top, the hot pressing lower mould top on right side.
2. The semi-dry press plant fiber molding machine as claimed in claim 1, wherein the wet embryo transfer mold (2) comprises a first plate (221) and a cover plate (222), the first plate (221) has a plurality of wet embryo forming surfaces (223) protruding downward on the bottom surface thereof, the wet embryo forming surfaces (223) have vent rings (224) on the outer edges thereof, the vent rings (224) are composed of a plurality of vent holes (225) arranged along the outer edges of the wet embryo forming surfaces (223) and enclosing into a ring shape, the first plate (221) has grooves (228) on the top surface thereof corresponding to the wet embryo forming surfaces (223), the top of the vent rings (224) are disposed in the corresponding grooves (228), water storage grooves (226) are disposed in the grooves (228), the water storage grooves (226) are disposed inside the vent rings (224) corresponding to the wet embryo forming surfaces (223), the top surfaces of the vent rings (224) are connected to the corresponding water storage grooves (226) through downwardly inclined annular slopes (227), the cover plate (222) covers the top surface of the first plate body (221), and a vent pipeline communicated with the groove (228) is arranged on the cover plate (222).
3. The semi-dry pressure plant fiber molding machine according to claim 2, wherein adjacent grooves (228) are communicated by the connecting grooves (229).
4. The semi-dry pressure plant fiber molding machine according to claim 1, wherein the suction filter die (42) comprises a suction filter base plate (421) and a suction filter die core (422) arranged above the suction filter base plate (421), the suction filter base plate (421) comprises a second plate body (423), a suction filter groove (424) is arranged on the top surface of the second plate body (423), a plurality of suction filter cavities (425) are uniformly distributed on the bottom surface of the suction filter groove (424), a suction filter hole (426) is arranged in the center of the suction filter cavity (425), a horizontally arranged baffle plate (427) is further arranged above the suction filter cavity (425), the baffle plate (427) is positioned right above the suction filter hole (426), and a water suction pipe (428) communicated with the suction filter hole (426) is arranged on the bottom surface of the second plate body (423).
5. The semi-dry pressure plant fiber molding machine according to claim 4, wherein the suction cavity (425) is inclined downward from the outside to the inside.
6. The semi-dry pressure plant fiber molding machine according to claim 1, the slurry tank (40) comprises a tank body (401), a slurry storage tank is arranged on the tank body (401), the pulp storage tank comprises a pulp storage chamber (402) and pulp overflow chambers (403) symmetrically arranged at the front side and the rear side of the pulp storage chamber (402), the pulp overflowing chamber (403) is separated from the pulp storage chamber (402) by a pulp overflowing plate (404), the left end and the right end of the pulp overflowing plate (404) bend into an arc shape towards one side of the pulp storage chamber (402), the lower parts of the left and right side walls of the box body (401) are both provided with a pulp inlet (405), the pulp inlet (405) is communicated with the pulp storage chamber (402), the bottom of the box body (401) is provided with a pulp overflow port (406) corresponding to the pulp overflow chamber (406), the pulp overflow ports (406) are communicated with the corresponding pulp overflow chambers (403), and the suction filter die (42) is positioned in the pulp overflow chambers (403).
7. The semi-dry pressure plant fiber molding machine according to claim 6, wherein air blowing pipes (408) are symmetrically arranged on the left and right sides of the bottom surface of the stock room (402), air blowing ports (409) are arranged at both ends of the air blowing pipes (408), an air inlet is arranged in the middle of the air blowing pipes (408), and an air inlet pipeline (410) communicated with the air inlet is arranged at the bottom of the box body (401).
8. The semi-dry pressure plant fiber molding machine according to claim 1, wherein the third lifting mechanism (44) comprises lifting units symmetrically disposed at the left and right sides of the slurry tank (40) and a synchronizing unit (443) for synchronously lifting the lifting units, the lifting units comprise hydraulic cylinders (441) and connecting members (442), the hydraulic cylinders (441) are vertically disposed, the lifting ends of the hydraulic cylinders (441) are connected to the suction filtration mold (42) through the connecting members (442), and the two connecting members (442) are connected through the synchronizing unit (443).
9. A molding method of semi-dry pressure plant fiber for a molding machine of semi-dry pressure plant fiber according to any one of claims 1 to 8, comprising the steps of:
s1: the suction filter die descends into the slurry in the slurry tank to absorb slurry, and after the slurry absorption is finished, the suction filter die ascends to leave the slurry, and wet blanks are formed on the suction filter die;
s2: the wet embryo transfer die descends and is combined with the suction and filtration die, the wet embryo transfer die extrudes the wet embryo on the suction and filtration die to form the wet embryo, and meanwhile, the suction and filtration bottom plate is pumped to suck the water extruded from the wet embryo and flowing into the suction and filtration bottom plate;
s3: pumping air to the wet embryo transfer mold, sucking the formed wet embryo by the wet embryo transfer mold, and simultaneously pumping away the moisture and water vapor entering the wet embryo transfer mold in the mold combination process of the wet embryo transfer mold and the suction and filtration mold;
s4: the wet embryo transfer mold moves to the upper part of the hot pressing lower mold on one side along the guide rail, the wet embryo transfer mold descends to a position 0.8-2 mm away from the hot pressing lower mold, the wet embryo transfer mold blows air to the wet embryo, meanwhile, the hot pressing lower mold sucks air, and the wet embryo falls onto the hot pressing lower mold from the wet embryo transfer mold; ensure the wet blank to be attached to the hot lower die cavity
S5: and the wet embryo transfer mold moves to the upper part of the slurry tank along the guide rail to continuously absorb new wet embryos, the hot pressing upper mold above the hot pressing lower mold with the wet embryos descends to be matched with the hot pressing lower mold, the wet embryos are heated and formed into products, then the hot pressing upper mold ascends, and the grabbing mechanism takes the products away.
10. The molding method of semi-dry pressure plant fiber as claimed in claim 9, wherein the extrusion force of the wet embryo on the wet embryo transfer mold extrusion suction mold in the step S2 is 10-16MPa, and the extrusion time is 2-4 seconds, so that the moisture content of the wet embryo reaches 58% -63%.
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