CN114182384A - Method for converting waste mask into regenerated polypropylene fiber - Google Patents
Method for converting waste mask into regenerated polypropylene fiber Download PDFInfo
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- CN114182384A CN114182384A CN202111527047.XA CN202111527047A CN114182384A CN 114182384 A CN114182384 A CN 114182384A CN 202111527047 A CN202111527047 A CN 202111527047A CN 114182384 A CN114182384 A CN 114182384A
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- mask
- metal strip
- plate
- nose clip
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
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- Treatment Of Fiber Materials (AREA)
Abstract
The invention discloses a method for converting a waste mask into a regenerated polypropylene fiber, which comprises the following steps: taking out a metal strip nose clip of a waste mask, placing the waste mask at 70-80 ℃ for fully sterilizing for 60-90min, recovering to obtain polypropylene non-woven fabric, then melting at 140-160 ℃ for 10-20min, cooling, crushing to obtain polypropylene flake raw materials, uniformly mixing the recovered polypropylene raw materials, blended fibers and nano toughening filler in advance, preheating in a dryer, then adding into a double-screw extruder for mixing, and extruding to obtain fiber base liquid by adopting a three-stage heating mode. According to the invention, the operation of quickly pulling and separating the metal strip nose clip and the mask is facilitated through the pulling and separating mechanism and the clamping mechanism, and meanwhile, the metal strip nose clip can be effectively pulled and pulled out and separated from the lower part of the waste mask, so that the metal strip nose clip is prevented from being manually operated, and the efficiency of separating the mask and the metal strip nose clip is greatly improved.
Description
Technical Field
The invention relates to the technical field of medical solid waste recycling, in particular to a method for converting a waste mask into regenerated polypropylene fibers.
Background
The use demand of personal protective equipment (particularly protective masks) is increased in a global scope, the joint national public health organization predicts that the annual growth rate of mask supply is maintained to be more than 20% from 2020 to 2025, according to statistics, the number of disposable masks used by the global population in 2020 every day exceeds 66.8 hundred million, and 1290 hundred million discarded masks are generated on average every month, at present, most of disposal strategies for disposable protective articles are incineration disposal, and tools such as recovery containers, delivery vehicles and the like need to be washed and killed strictly after operation, so that huge manpower and material resources are consumed, and environmental pollution and resource waste are caused;
the mask is generally composed of non-woven fabrics, a nose clip and a mask belt, wherein the non-woven fabrics are used as the most main components, polypropylene (PP) is used as a raw material, and the mask is manufactured by a continuous one-step method of high-temperature melting, spinning, line laying and hot-pressing coiling;
however, the existing device for converting the waste mask into the regenerated polypropylene fiber still has defects in the conversion process, such as:
1. the rapid separation of the waste mask and the metal strip nose clip is inconvenient, and particularly when the masks are treated in batches, the efficiency of converting the waste mask into the regenerated polypropylene fiber is seriously reduced;
2. it is after separating abandonment gauze mask and metal strip nose clip, the manual work of not being convenient for is taken out its collection with safest operation mode from equipment to lead to operating personnel when operating it, cause certain potential safety hazard easily.
Therefore, there is a need to provide a method for converting waste masks into recycled polypropylene fibers to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a method for converting a waste mask into regenerated polypropylene fibers, which is convenient for rapidly pulling and separating a metal strip nose clip from the mask by a pulling and separating mechanism and a clamping mechanism, and can effectively pull, draw and separate the metal strip nose clip from the lower part of the waste mask, thereby avoiding the need of manually operating the metal strip nose clip by hands, greatly improving the efficiency of separating the mask from the metal strip nose clip and solving the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a method for converting a waste mask into a regenerated polypropylene fiber comprises the following steps: taking out a metal strip nose clip of a waste mask, placing the waste mask at 70-80 ℃ for fully sterilizing for 60-90min, recovering to obtain polypropylene non-woven fabric, then melting at 140-160 ℃ for 10-20min, cooling and crushing to obtain polypropylene flake raw material, uniformly mixing the recovered polypropylene raw material, blended fiber and nano toughening filler in advance, preheating in a dryer, then adding into a double-screw extruder for mixing, and extruding to obtain fiber base liquid by adopting a three-stage heating mode;
secondly, putting the fiber base liquid into a spinning box body, heating the box body by steam, and enabling the melt to flow out through a spinneret plate to form a regenerated fiber tow;
thirdly, cooling, shaping and drying the spun tows to obtain regenerated polypropylene fibers;
putting the regenerated polypropylene fiber into 10% ethanol CH3CH2OH aqueous solution, adding 5-8% vinyltrimethylsilane (CH3)3SiCHCH2, fully and uniformly dispersing, then adding 5% hydrogen peroxide tert-butyl alcohol C4H10O2, heating to complete surface grafting reaction, taking out the fiber after the reaction, removing residual coupling agent on the surface of the fiber by using acetone, and drying to obtain the regenerated polypropylene fiber with enhanced interface function;
wherein step has adopted one kind in firstly can be fast with abandonment gauze mask metal strip nose clamp autosegregation device, comprises a workbench, servo motor's output fixedly connected with main shaft is passed through to the workstation below, just the welding of the main shaft outside has the commentaries on classics board, change board top activity and articulate there is the swinging plate, just swinging plate top activity articulates there is the lifter plate, the fixed block has all been welded in the lifter plate top left and right sides, just the fixed block top is provided with can be cut the non-woven fabrics of the metal strip nose clamp outside parcel of abandonment gauze mask, and carries out the fixed pulling separating mechanism of centre gripping to the metal strip nose clamp simultaneously, pull separating mechanism including setting up the movable rod inboard at the fixed block, just the movable rod has the chuck through inboard welding, the movable rod outside is fixed with the loop bar, just the inboard threaded connection of loop bar has the screw axis, the lifter plate left and right sides is provided with can carry out the fixed clamp of centre gripping to the abandonment gauze mask region that is close to the metal strip nose clamp The clamping mechanism comprises a first transmission gear connected to the inner side of the upper portion of the workbench through a shaft rod bearing, the first transmission gear is welded with a clamping wall and two clamping blocks welded to the inner side of the upper portion of the clamping wall, a through hole is formed in the inner side of each clamping block on the right side of the clamping wall, a thin rod is welded to the outer side of each clamping block, square steel is welded to the left side of the lower portion of the workbench, and a rolling-out mechanism capable of quickly taking out the waste mask with the metal strip nose clip taken out is arranged above the workbench.
Preferably, the regenerated fiber is subjected to a silane coupling agent grafting modification treatment mode.
Preferably, the silane coupling agent is vinyltrimethylsilane (CH3)3SiCHCH2, ethanol CH3CH2OH aqueous solution with the concentration of 10% is used as a dispersion medium, and tert-butyl hydroperoxide C4H10O2 is used as an initiator.
Preferably, be close to the right side top welding of workstation central line has the fixed plate, just the draw-in groove has been seted up to the fixed plate inboard, the rear side is opened and is equipped with the arc wall in the middle of the fixed plate, and the design of above-mentioned structure can effectually carry out the block through the draw-in groove with abandonment gauze mask and rectify.
Preferably, the front of the swing plate is welded with a boss, and the design of the structure can effectively drive the boss to extrude and move the rack plate under the action of left-right swing of the swing plate.
Preferably, the roll-out mechanism includes the block and is in the inside rack plate in square steel right side, just rack plate the place ahead meshing have the second drive gear the inboard welding of second drive gear has the driven shaft, just the driven shaft top outside is fixed with the rotary drum, is being close to the gauze mask the brush is installed to rotary drum one side, and the design of above-mentioned structure can effectually be rolled up the discarded gauze mask that will handle through the brush rotation and separate with the slender pole.
Preferably, the square steel with the hidden spring constitution extending structure is being cooperated to the rack board, and the design of above-mentioned structure can effectually drive the rotation of second drive gear through rack board horizontal slip.
Preferably, rack plate right-hand member with the boss constitutes collision extrusion structure, and the design of above-mentioned structure can effectual drive rack plate cooperation spring through the boss horizontal hunting and carry out the horizontal slip.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention is provided with the pulling and separating mechanism, the movable rods, the chucks, the loop bars and the spiral shaft on the left side and the right side can simultaneously move downwards by utilizing the action of the downward movement of the lifting plate, the action of constant force extrusion is carried out to the plane far away from the root of the arc-shaped groove by utilizing the cooperation of the spiral shaft with the roller at the tail end and the track of the arc-shaped groove, thereby leading the screw shaft to drive the loop bar to rotate, leading the loop bar to drive the corresponding movable bar and the blade-shaped chuck to turn inwards at the same time through the opposite arrangement of the screw thread directions of the screw shafts at the left side and the right side, so that the nose clip of the metal strip of the mask exposed at the left side of the clamping groove can be clamped, and meanwhile, the mask cloth wrapped outside the nose clip of the metal strip of the mask can be cut through the blade-shaped clamping head, the metal strip nose clip is just clamped at the inner side of the groove of the chuck, so that the metal strip nose clip and the mask can be quickly pulled and separated conveniently;
2. according to the metal strip nose clip, the clamping mechanism is arranged, the racks on the left side and the right side are effectively matched to drive the first transmission gears, the clamping walls, the clamping blocks, the through holes and the thin rods corresponding to the left side and the right side to rotate inwards at the same time under the action of downward movement of the lifting plate, so that the thin rods and the through holes are matched to be fixed on the inner sides of the two clamping blocks in the upper area of the mask, and the metal strip nose clip is fixed by the force of downward movement of the lifting plate matched with the pulling and separating mechanism, so that the metal strip nose clip can be effectively pulled out and separated from the waste mask, the structure can quickly separate the waste mask from the metal strip nose clip below through mechanical automation, and the phenomenon that the metal strip nose clip is manually operated is avoided, and therefore the separation efficiency of the mask and the metal strip nose clip is greatly improved;
3. according to the invention, the rolling-out mechanism is arranged, and by utilizing the swinging action of the swinging plate and the boss to the other side, the rack plate can be matched with the square steel and the return spring at the inner side of the square steel to be extruded and impacted by the boss to move towards the rear side, so that the second transmission gear, the driven shaft, the rotary drum and the hairbrush can be driven to rotate simultaneously, and by utilizing the rotating action of the hairbrush, the mask with the metal strip nose clip drawn out can be effectively rolled out from the outer side of the slender rod to the other side of the slender rod and separated from the slender rod, so that an operator can conveniently collect and process the slender rod, meanwhile, the safety accident caused by the contact of hands with the slender rod is avoided, and the overall safety is improved.
Drawings
FIG. 1 is a schematic structural diagram of a preferred embodiment of the method for converting a waste mask into a recycled polypropylene fiber according to the present invention;
FIG. 2 is a schematic view of the mounting structure of the lifting plate and the first transmission gear shown in FIG. 1;
FIG. 3 is an enlarged schematic view of the structure at A shown in FIG. 2;
FIG. 4 is a schematic view of the mounting structure of the wobble plate and the boss shown in FIG. 1;
fig. 5 is an enlarged schematic view of the structure at B in fig. 4.
In the figure: 1. a work table; 101. a fixing plate; 102. a card slot; 103. an arc-shaped slot; 2. a main shaft; 3. Rotating the plate; 4. a swing plate; 401. a boss; 5. a lifting plate; 6. a fixed block; 7. a pulling and separating mechanism; 701. a movable rod; 702. a chuck; 703. a loop bar; 704. a screw shaft; 8. a clamping mechanism; 801. a first drive gear; 802. a clamping wall; 803. a clamping block; 804. a through hole; 805. a thin rod; 9. square steel; 10. a roll-out mechanism; 1001. a rack plate; 1002. a second transmission gear; 1003. a driven shaft; 1004. A rotating drum; 1005. and a brush.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, an embodiment of the present invention is shown: a method for converting a waste mask into a regenerated polypropylene fiber comprises the following steps: taking out a metal strip nose clip of a waste mask, placing the waste mask at 70-80 ℃ for fully sterilizing for 60-90min, recovering to obtain polypropylene non-woven fabric, then melting at 140-160 ℃ for 10-20min, cooling and crushing to obtain polypropylene flake raw material, uniformly mixing the recovered polypropylene raw material, blended fiber and nano toughening filler in advance, preheating in a dryer, then adding into a double-screw extruder for mixing, and extruding to obtain fiber base liquid by adopting a three-stage heating mode;
secondly, putting the fiber base liquid into a spinning box body, heating the box body by steam, and enabling the melt to flow out through a spinneret plate to form a regenerated fiber tow;
thirdly, cooling, shaping and drying the spun tows to obtain regenerated polypropylene fibers;
putting the regenerated polypropylene fiber into 10% ethanol CH3CH2OH aqueous solution, adding 5-8% vinyltrimethylsilane (CH3)3SiCHCH2, fully and uniformly dispersing, then adding 5% hydrogen peroxide tert-butyl alcohol C4H10O2, heating to complete surface grafting reaction, taking out the fiber after the reaction, removing residual coupling agent on the surface of the fiber by using acetone, and drying to obtain the regenerated polypropylene fiber with enhanced interface function;
the regenerated fiber adopts a silane coupling agent grafting modification treatment mode, the silane coupling agent selects vinyltrimethylsilane (CH3)3SiCHCH2, ethanol CH3CH2OH aqueous solution with the concentration of 10% is used as a dispersion medium, and hydrogen peroxide tert-butyl alcohol C4H10O2 is used as an initiator.
The automatic separation device capable of quickly separating the metal strip nose clip of the waste mask is adopted in the first step, and comprises a workbench 1, a fixing plate 101, a clamping groove 102, an arc groove 103, a main shaft 2, a rotating plate 3, a swinging plate 4, a boss 401, a lifting plate 5, a fixing block 6, a pulling and separating mechanism 7, a movable rod 701, a chuck 702, a loop bar 703, a spiral shaft 704, a clamping mechanism 8, a first transmission gear 801, a clamping wall 802, a clamping block 803, a through hole 804, a thin rod 805, square steel 9, a winding-out mechanism 10, a rack plate 1001, a second transmission gear 1002, a driven shaft 1003, a rotating drum 1004 and a brush 1005, wherein the main shaft 2 is fixedly connected below the workbench 1 through an output end of a servo motor, the rotating plate 3 is welded on the outer side of the main shaft 2, the swinging plate 4 is movably hinged above the rotating plate 3, the lifting plate 5 is movably hinged above the swinging plate 4, the lifting plate 5 is welded on the left side and the right side, and 6 tops of fixed block are provided with the non-woven fabrics that can press from both sides the outside parcel to the metal strip nose of abandonment gauze mask and cut, and carry out the fixed pulling separating mechanism 7 of centre gripping to the metal strip nose clamp simultaneously, the 5 left and right sides of lifter plate are provided with and carry out the fixture 8 that the centre gripping is fixed to the abandonment gauze mask region that is close to the metal strip nose clamp, the welding of 1 below left side of workstation has square steel 9, and 1 top of workstation is provided with the roll-out mechanism 10 that can take out the abandonment gauze mask of metal strip nose clamp fast.
Example 1
Referring to fig. 1-3, a fixed plate 101 is welded on the right upper side near the center line of the workbench 1, a slot 102 is disposed on the inner side of the fixed plate 101, an arc-shaped slot 103 is disposed on the rear side of the middle of the fixed plate 101, a boss 401 is welded on the front of the swing plate 4, the pulling and separating mechanism 7 comprises a movable rod 701 disposed on the inner side of the fixed plate 6, a chuck 702 is welded on the movable rod 701 through the inner side, a sleeve rod 703 is fixed on the outer side of the movable rod 701, a screw shaft 704 is connected to the inner side of the sleeve rod 703 through a screw thread, a servo motor below the workbench 1 is started to drive the main shaft 2 to rotate and drive the swing plate 3 to rotate, so that the swing plate 4 and the boss 401 movably hinged on the top of the swing plate 3 can swing left and right, the lifting plate 5 can be driven to move up and down under the action, when the lifting plate 5 moves down, the movable rod 701, the chuck 702, the sleeve rod 703 and the screw shaft 704 on the left and right can be driven to move down simultaneously, when the screw shaft 704 moves downwards, the screw shaft 704 can be matched with a roller at the tail end of the screw shaft and the track of the arc-shaped groove 103 recessed at the left side of the fixing plate 101 above the workbench 1 to extrude the screw shaft 704 with constant force to the plane far away from the root of the arc-shaped groove 103, so that the screw shaft 704 moves towards the rear side in the loop bar 703, the screw shaft 704 is in threaded connection with the inner side of the loop bar 703, the loop bar 703 is matched with the fixing block 6 to rotate, the thread direction of the screw shaft 704 at the left side is opposite to the thread direction of the screw shaft 704 at the right side, so that the loop bar 703 drives the corresponding movable rod 701 and the blade-shaped chuck 702 to turn inwards at the same time, the mask metal strip nose clip exposed at the left side of the clamping groove 102 can be clamped, and meanwhile, the mask cloth wrapped at the outer side of the mask metal strip nose clip can be cut off through the blade-shaped chuck 702, so that the metal strip nose clip is just clamped at the inner side of the groove of the chuck 702, thereby being convenient for rapidly pulling and separating the metal strip nose clip and the mask.
Example 2
Referring to fig. 1-3, the difference from embodiment 1 is: the clamping mechanism 8 comprises a first transmission gear 801 connected to the inner side above the workbench 1 through a shaft rod bearing, the first transmission gear 801 is welded with a clamping wall 802 through a shaft rod, the inner sides of the upper parts of the two clamping walls 802 are welded with clamping blocks 803, the inner side of the right clamping block 803 is provided with a through hole 804, the outer side of the left clamping block 803 is welded with a thin rod 805, when the lifting plate 5 moves downwards, the first transmission gears 801 which are correspondingly meshed with the left side and the right side can be driven by the racks on the left side and the right side to rotate inwards at the same time, and simultaneously drives the clamping wall 802, the clamping block 803, the through hole 804 and the thin rod 805 to turn inwards, the clamping block 803, the through hole 804 and the thin rod 805 are turned inwards at the same time, so that the upper area of the mask is matched with the thin rod 805 and the through hole 804 to be fixed on the inner side of the clamping block 803, then the metal strip nose clip is effectively pulled, pulled and separated from the lower part of the waste mask by utilizing the force of the pulling and separating mechanism 7 matched with the downward movement of the lifting plate 5.
Example 3
Referring to fig. 1 and fig. 4-5, the difference from embodiment 2 is: the unwinding mechanism 10 comprises a rack plate 1001 clamped inside the right side of the square steel 9, a second transmission gear 1002 is meshed in front of the rack plate 1001, a driven shaft 1003 is welded on the inner side of the second transmission gear 1002, a rotary drum 1004 is fixed on the outer side above the driven shaft 1003, a brush 1005 is installed on one side of the rotary drum 1004 close to the mask, the square steel 9 and the rack plate 1001 are matched with a hidden spring to form a telescopic structure, the right end of the rack plate 1001 and a boss 401 form a collision extrusion structure, after the mask is separated from the metal strip nose clip, the rack plate 4 and the boss 401 swing towards the other side, the rack plate 1001 can be matched with the square steel 9 and a return spring inside the square steel 9 through the boss 401 to carry out extrusion impact, when the rack plate 1001 is extruded to move towards the left side, the second transmission gear 1002, the driven shaft 1003, the rotary drum 1004 and the brush 1005 can be driven to rotate simultaneously, and the brush 1005 rotates under the action of the brush 1005, the mask with the metal strip nose clip can be effectively pushed out from the other side of the outer side of the slender rod 805 and separated from the slender rod 805, so that an operator can conveniently collect and process the slender rod 805, and safety accidents caused by the fact that hands touch the slender rod 805 are avoided.
The working principle is as follows: as shown in fig. 1-3, firstly, the recovered mask is placed beside the device, then the abandoned mask is intermittently placed in the square-shaped slot 102 at the inner side of the fixing plate 101 by the staff, the slot 102 at this position not only can flatten and correct the mask, but also can play a certain fixing role, it needs to be noticed that the metal strip nose clip above the mask is required to be towards the lower part of the slot 102, and two thirds area of the metal strip nose clip is exposed at the left side of the slot 102, then the servo motor below the worktable 1 is started to drive the spindle 2 to rotate and drive the rotating plate 3 to rotate, so that the swinging plate 4 and the boss 401 which are movably hinged above the rotating plate 3 can swing left and right, the lifting plate 5 can be driven to move up and down under the action of the swinging plate, when the lifting plate 5 moves down, the movable rods 701, the chucks 702, the loop rods 703 and the spiral shaft 704 at the left and right sides can be driven to move down simultaneously, when the screw shaft 704 moves downwards, the screw shaft 704 can be matched with a roller at the tail end of the screw shaft and the track of the arc-shaped groove 103 recessed at the left side of the fixing plate 101 above the workbench 1 to extrude the screw shaft 704 with constant force to the plane far away from the root of the arc-shaped groove 103, so that the screw shaft 704 moves towards the rear side in the loop bar 703, the screw shaft 704 is in threaded connection with the inner side of the loop bar 703, the loop bar 703 is matched with the fixing block 6 to rotate, the thread direction of the screw shaft 704 at the left side is opposite to the thread direction of the screw shaft 704 at the right side, so that the loop bar 703 drives the corresponding movable rod 701 and the blade-shaped chuck 702 to turn inwards at the same time, the mask metal strip nose clip exposed at the left side of the clamping groove 102 can be clamped, and meanwhile, the mask cloth wrapped at the outer side of the mask metal strip nose clip can be cut off through the blade-shaped chuck 702, so that the metal strip nose clip is just clamped at the inner side of the groove of the chuck 702, thereby facilitating the operation of quickly pulling and separating the metal strip nose clip and the mask;
as shown in fig. 1-3, when the lifting plate 5 moves downward, it can also cooperate with the racks on the left and right sides to drive the first transmission gears 801 engaged with the left and right sides to rotate inward at the same time, and simultaneously drives the clamping wall 802, the clamping block 803, the through hole 804 and the thin rod 805 to turn inwards, the clamping block 803, the through hole 804 and the thin rod 805 are turned inwards at the same time, so that the upper area of the mask is matched with the thin rod 805 and the through hole 804 to be fixed on the inner side of the clamping block 803, then the metal strip nose clip is effectively pulled out and separated from the lower part of the waste mask by utilizing the force of the pulling and separating mechanism 7 which is matched with the lifting plate 5 to move downwards, the structure can rapidly separate the waste mask from the metal strip nose clip below through mechanical automation, thereby avoiding the manual operation of the metal strip nose clip, and greatly improving the separation efficiency of the mask and the metal strip nose clip;
as shown in fig. 1 and fig. 4-5, after the mask is separated from the metal strip nose clip, by the action of the swing plate 4 and the boss 401 swinging to the other side, the rack plate 1001 can be pressed and impacted by the boss 401 in cooperation with the square steel 9 and the return spring inside the square steel 9, and when the rack plate 1001 is pressed and moved to the left side, the second transmission gear 1002, the driven shaft 1003, the rotary drum 1004 and the brush 1005 can be driven to rotate simultaneously, and by the action of the rotation of the brush 1005, the mask with the metal strip nose clip drawn out can be effectively pushed out from the outer side of the pin 805 to the other side and separated from the other side, so that an operator can conveniently collect the mask, and meanwhile, a safety accident caused by the fact that a human hand touches the position of the pin 805 is avoided, which is the working principle of the present invention, thereby completing a series of work.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. A method for converting a waste mask into a regenerated polypropylene fiber is characterized by comprising the following steps: the method comprises the following steps: taking out a metal strip nose clip of a waste mask, placing the waste mask at 70-80 ℃ for fully sterilizing for 60-90min, recovering to obtain polypropylene non-woven fabric, then melting at 140-160 ℃ for 10-20min, cooling and crushing to obtain polypropylene flake raw material, uniformly mixing the recovered polypropylene raw material, blended fiber and nano toughening filler in advance, preheating in a dryer, then adding into a double-screw extruder for mixing, and extruding to obtain fiber base liquid by adopting a three-stage heating mode;
secondly, putting the fiber base liquid into a spinning box body, heating the box body by steam, and enabling the melt to flow out through a spinneret plate to form a regenerated fiber tow;
thirdly, cooling, shaping and drying the spun tows to obtain regenerated polypropylene fibers;
putting the regenerated polypropylene fiber into 10% ethanol CH3CH2OH aqueous solution, adding 5-8% vinyltrimethylsilane (CH3)3SiCHCH2, fully and uniformly dispersing, then adding 5% hydrogen peroxide tert-butyl alcohol C4H10O2, heating to complete surface grafting reaction, taking out the fiber after the reaction, removing residual coupling agent on the surface of the fiber by using acetone, and drying to obtain the regenerated polypropylene fiber with enhanced interface function;
wherein, the automatic separating device for the metal strip nose clip of the abandoned mask is adopted in the step I, and comprises a workbench (1), the lower part of the workbench (1) is fixedly connected with a main shaft (2) through an output end of a servo motor, the outer side of the main shaft (2) is welded with a rotating plate (3), the upper part of the rotating plate (3) is movably hinged with a swinging plate (4), the upper part of the swinging plate (4) is movably hinged with a lifting plate (5), fixed blocks (6) are welded on the left side and the right side of the upper part of the lifting plate (5), the upper part of the fixed block (6) is provided with a non-woven fabric which can be used for cutting the outer side of the metal strip nose clip of the abandoned mask, and simultaneously the metal strip nose clip is fixedly clamped and pulled by a separating mechanism (7), the pulling separating mechanism (7) comprises a movable rod (701) arranged on the inner side of the fixed block (6), and the movable rod (701) is welded with a chuck (702) through the inner side, a loop bar (703) is fixed at the outer side of the movable bar (701), a spiral shaft (704) is connected with the inner side of the loop bar (703) through a thread, the left side and the right side of the lifting plate (5) are provided with clamping mechanisms (8) which can clamp and fix the waste mask area close to the metal strip nose clip, the clamping mechanism (8) comprises a first transmission gear (801) connected to the inner side above the workbench (1) through a shaft rod bearing, the first transmission gear (801) is welded with a clamping wall (802) through a shaft rod, and the inner sides of the upper parts of the two clamping walls (802) are welded with clamping blocks (803), the inner side of the clamping block (803) at the right side is provided with a through hole (804), the outer side of the clamping block (803) at the left side is welded with a thin rod (805), the left side of the lower part of the workbench (1) is welded with square steel (9), and a rolling-out mechanism (10) which can quickly take out the waste mask with the metal strip nose clip is arranged above the workbench (1).
2. The method for converting a waste mask into a recycled polypropylene fiber according to claim 1, wherein: the regenerated fiber adopts a silane coupling agent grafting modification treatment mode.
3. The method for converting a waste mask into a recycled polypropylene fiber according to claim 2, wherein: the silane coupling agent selects vinyltrimethylsilane (CH3)3SiCHCH2, ethanol CH3CH2OH aqueous solution with the concentration of 10% is used as a dispersion medium, and tert-butyl hydroperoxide C4H10O2 is used as an initiator.
4. The method for converting a waste mask into a recycled polypropylene fiber according to claim 1, wherein: fixed plate (101) have been welded to the right side top of workstation (1) central line, just draw-in groove (102) have been seted up to fixed plate (101) inboard, rear side is opened in the middle of fixed plate (101) and is equipped with arc wall (103).
5. The method for converting a waste mask into a recycled polypropylene fiber according to claim 1, wherein: a boss (401) is welded in front of the swinging plate (4).
6. The method for converting a waste mask into a recycled polypropylene fiber according to claim 5, wherein: the rolling-out mechanism (10) comprises a rack plate (1001) clamped inside the right side of the square steel (9), a second transmission gear (1002) is meshed in front of the rack plate (1001), a driven shaft (1003) is welded on the inner side of the second transmission gear (1002), a rotary drum (1004) is fixed on the outer side of the upper portion of the driven shaft (1003), and a brush (1005) is installed on one side of the rotary drum (1004) close to the mask.
7. The method for converting a waste mask into a recycled polypropylene fiber according to claim 6, wherein: the square steel (9) and the rack plate (1001) are matched with a hidden spring to form a telescopic structure.
8. The method for converting a waste mask into a recycled polypropylene fiber according to claim 7, wherein: the right end of the rack plate (1001) and the boss (401) form a collision extrusion structure.
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| CN114182384B (en) | 2023-07-18 |
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