91 results about "Plastic foam" patented technology

Disclosed is an all-plastic foam pump structure, including a pressing head (1) made of plastic, a mesh passage (2), a pump body (3), a bottle locking cap (4), a main column (5), an air suction plug (6), a liquid suction plug (7), an elastic sleeve (8), and a pump bead (9), where the bottle locking cap (4) is connected to an upper end of the pump body (3) in an inserted manner; the pump body (3) includes an air chamber (31) and a liquid chamber (32) which are provided at the top and bottom; the air suction plug (6) is provided in the air chamber (31) and connected to the pressing head (1) in an inserted manner, and the mesh passage (2) is arranged between the air suction plug (6) and the pressing head (1); an upper end of the main column (5) extends out of the air chamber (31) and is connected to the air suction plug (6); when the pressing head (1) is pressed downwards, the main column (5) moves downwards together with the air suction plug (6); the liquid suction plug (7) is provided in the liquid chamber (32) and is connected to a lower end of the main column (5); the elastic sleeve (8) sleeves an outer side of the main column (5) and is an elastic plastic annular piece with an opening arranged on a side surface; the pump bead (9) is provided at an inlet of a lower end of the liquid chamber (32). All assemblies of the foam pump are made of plastic and may be recycled without disassembly and classification, improving the recycling efficiency.

The utility model discloses crushing equipment for recycling and reusing a waste plastic foam box, which comprises a conveying mechanism, the top of the conveying mechanism is fixedly communicated with a blanking frame, the top of the blanking frame is fixedly communicated with a crushing frame, a crushing mechanism for crushing the foam box is arranged in the crushing frame, and a crushing mechanism for crushing the foam box is arranged in the crushing frame. And the top of the crushing mechanism fixedly communicates with a feeding frame for placing the foam box, and a preliminary crushing mechanism for preliminarily crushing the foam box is arranged in the feeding frame. According to the utility model, the arc-shaped feeding frame is arranged to conveniently feed the foam box, and the foam box is firstly contacted with the primary crushing mechanism after being fed, so that the foam box can be crushed into small foam blocks firstly, and the arranged primary crushing mechanism can also be conveniently detached to facilitate cleaning and maintenance of the primary crushing mechanism; then, the small foam blocks can be subjected to secondary treatment on the crushing mechanism, and the crushed foam blocks can be intensively collected and reused through the conveying mechanism.

The utility model discloses a plastic foam trepanning device, which relates to the field of plastic foam processing equipment and comprises a working table, plastic foam is placed on the working table, an L-shaped positioning plate is fixedly mounted on the working table, a movable clamping plate is mounted on the working table in a sliding manner, and the L-shaped positioning plate and the movable clamping plate are both matched with the plastic foam. A fixed sliding rail is fixedly installed on the side face of the workbench, a lifting assembly is slidably installed on the fixed sliding rail, a movable assembly is slidably installed on the side face of the lifting assembly, and a hot cutter and an adsorption pipe are arranged on the bottom side of the trepanning tool base. According to the utility model, the fixed sliding rail, the lifting assembly and the movable assembly are used for controlling the trepanning tool seats to move, so that the hot cutter is driven to freely move on the plastic foam, different holes are conveniently and quickly cut, meanwhile, different numbers of the trepanning tool seats can be arranged, the trepanning speed is adjusted, and the trepanning efficiency is improved. The effect of forming a plurality of holes at a time is achieved.

The invention relates to the technical field of foamed plastic recycling and discloses a foamed plastic leftover material recycling and smashing device and method.The foamed plastic leftover material recycling and smashing device comprises a base, the end face of the base is fixedly connected with a frame, the end face of the end, away from the base, of the frame is fixedly connected with a feeding pipe, and the end face of the end, away from the feeding pipe, of the frame is fixedly connected with a discharging pipe; an engine is fixedly connected to the surface of the side, away from the frame body, of the base, and an inner motor is fixedly connected to the inner wall of the frame body. When the foam plastic recycling device is used, foam plastic needing to be recycled is poured into the feeding pipe, at the moment, motors inside and outside the extrusion component are started, a transverse shaft is driven to operate along the inner wall of the material distribution plate, meanwhile, an extrusion sector plate is driven to operate, and the extrusion sector plate and the material distribution plate distribute and extrude the plastic foam entering the extrusion sector plate; the plastic products with smooth surfaces are extruded together, become rough and are pushed to move downwards, and meanwhile, the dust blowing fan can conduct dust blowing treatment on the surfaces of the plastic foam products.

The utility model relates to the technical field of channel desilting pipelines, in particular to a desilting conveying pipeline which comprises a pipe body, an elastic air bag, an air conveying pipe, a bearing end and a screwing end. The two elastic air bags symmetrically arranged on the pipe body replace a traditional plastic foam floating platform floating mode, so that the sludge conveying pipe can float on the water surface, and meanwhile, compared with a common plastic foam floating platform, the sludge conveying pipe is small in occupied area and does not need to be disassembled frequently; the elastic air bag can be stored along with the pipeline after being deflated, operation is simpler and more convenient, meanwhile, the structural design that the bearing end and the screwing end are connected in a rotating and clamping mode is adopted, a traditional screw or hoop fixed connection mode is replaced, the pipeline can be disassembled and assembled without the help of tools, and connection operation between conveying pipelines is simplified.

The utility model discloses a foam plastic machine which comprises a rack, a movable mold, a fixed mold and a guide rail, the guide rail is fixedly connected with the rack, the movable mold and the fixed mold are both in sliding connection with the guide rail, the movable mold is connected with an electric driving part, the electric driving part drives the movable mold to slide along the guide rail through a transmission mechanism, and the electric driving part drives the movable mold to slide along the guide rail. The movable mold has a mold opening state and a mold closing state under the driving of the electric driving part, the movable mold and the fixed mold are locked in the mold closing state, and the movable mold and the fixed mold are separated in the mold opening state. The foam plastic machine is stable in quality and high in control precision.

The utility model discloses a foaming pump press head demoulding structure relates to the field of plastic foaming pump production and processing. The structure is composed of 11 die plates of front mould and rear mould, matches with the auxiliary components such as inclined guide pillar, sliding block, cylinder, cylinder needle, buckle machine, adopts " push " type demoulding mode to replace traditional " pull " type operation. Through the step -by -step action of front -rear mould separation, product and water gap and rear mould separation, the stable demoulding of foaming pump press head is realized, the core pulling deformation problem caused by mould overheating, component slow cooling is effectively solved, the product defective rate is reduced, the raw material waste is reduced, and is applicable to the foaming pump press head demoulding procedure with convex structure.

The utility model relates to the technical field of heating foaming furnaces, and provides a heating foaming furnace for processing rubber and plastic heat insulation materials, which comprises a shell and an exhaust fan, the exhaust fan is arranged at the top of the shell, a heat exchange component is arranged outside the shell, telescopic cylinders are mounted at the top of the shell, and a conveying heating component is arranged in the shell. The maintenance assembly is arranged outside the shell, the conveying and heating assembly comprises a pair of outer frames, the outer frames are arranged on the two sides outside the shell, a pair of conveying rollers are rotationally connected into the outer frames, driving rollers are rotationally connected to openings in the two sides of the shell and controlled by a motor to rotate, and a plurality of inner rollers are rotationally connected into the shell. According to the technical scheme, the problems that in the prior art, a common rubber and plastic foaming furnace is not provided with a corresponding waste gas recycling device, waste gas generated in the production process is directly discharged into air to cause air pollution, and meanwhile, a corresponding closed heat preservation door is not arranged in the production process, and a large amount of heat of the device is lost are solved.

The utility model discloses a plastic foam strength detection device, which belongs to the technical field of detection equipment, and comprises a clamp, the clamp comprises a left block and a right block, the right block is provided with a positioning assembly, the positioning assembly comprises a fixed block, a connecting block and a sliding block, the fixed block is fixedly arranged on the right block, a cavity is formed in the fixed block, and the connecting block is connected with the sliding block. A cavity is formed in the left block, the connecting block slides in the cavity, a guide groove is formed in one side of the cavity, the sliding block slides in the guide groove and is fixedly connected with the connecting block, an opening is formed in the end, close to the left block, of the cavity, and when the sliding block slides towards one side of the left block, the connecting block extends out of the opening. The device has the advantage that the detection accuracy of the device is improved.

This invention provides a method for safely and securely framing uniforms, such as those worn by athletes, so that they can be displayed for a long time without wrinkles or deformation, making them a valuable keepsake. [Solution] This method of framing a uniform in a picture frame is used for framing the uniform of a talent or athlete. The frame is made of a decorative thin plywood backing board, and a lightweight plastic foam 3 to 20 mm thick or a cardboard mold 2 to 3 mm thick is inserted inside the torso and sleeve parts of the uniform. The molded uniform is then secured to the framed uniform using 4 to 8 screw-type roughly Z-shaped transparent resin fasteners at the stable fixing points.

The utility model relates to the technical field of plastic foam processing equipment, in particular to an R290 type central air conditioner with hot water floor heating, which comprises a base, the inner wall of the base is slidably clamped with the outer wall of a sliding part, one side of the sliding part is fixedly connected with one side of a rotating part, and the outer wall of the rotating part is fixedly welded with the outer wall of one side of a fixed part. The inner wall of the rotating piece movably abuts against the outer wall of the floor heating piece, the inner wall of the base is movably connected with the outer wall of the rotating piece in an inserted mode, when the hot water floor heating pipe is installed, the floor heating hot water pipe is laid on the sliding blocks, the distance between the sliding blocks is adjusted to be appropriate, the rotating sleeve is rotated, the rotating sleeve drives the connecting block to rotate, and the floor heating hot water pipe is installed. The bottom of the connecting block abuts against the top of the fixing block, a bolt is inserted into a through hole and screwed into a threaded hole, the connecting block is fixed, a hot water floor heating pipe is sleeved and fixed through a rotating sleeve, people can install the hot water floor heating pipe more conveniently, and the installation speed of people is effectively increased.

The invention provides a microcellular foaming master batch composition for a controlled weight loss and controlled microcellular foaming plastic product. The microcellular foaming master batch composition comprises a thermoplastic carrier plastic, a two-component microcellular foaming agent comprising a gas carrier and an acid carrier, an amphiphilic stabilizer selected from a fatty acid modified salt, glyceryl stearate or a combination thereof, and an adsorption dispersant. The master batch composition is suitable for a wider processing temperature range to meet the requirements of producing various base material plastic foaming products, and allows controllable microcellular foaming in plastic products, so that the microcellular foaming plastic product which is lighter in weight, good in mechanical strength, low in cost and high in flexibility and meets the requirements of laws and regulations can be easily manufactured.

The utility model relates to the technical field of boat fenders, and discloses an anti-collision bulletproof boat fender for an official business boat, which comprises a fixed frame, and a first protection component is arranged on the right side of the fixed frame. The bulletproof and anti-collision effects are achieved through the first elastic armor and the second elastic armor, when the first elastic armor and the second elastic armor are collided, deformation is generated between the first elastic armor and the second elastic armor, buffering and shock absorption are achieved under the action of the rubber columns, the plastic foam balls and the first air bags, the anti-collision effect is improved, and the service life of the bulletproof and anti-collision device is prolonged. Meanwhile, when the fender is hit by bullets, the bullets can be unloaded, so that the service life of the fender is prolonged, after the first elastic armor and the second elastic armor are damaged, the stable effect of the boat is kept under the action of the two sets of second air bags, and therefore it is avoided that after the plastic foam ball and the first air bag are damaged, the boat cannot be damaged. And the ship loses the balance effect and shakes due to leakage, and the bulletproof effect is continuously achieved on the second protection assembly.

The utility model discloses a rubber and plastic foam board cutting device which comprises a rack, a motor, a feeding assembly, a roller, a pressing roller, a first rotating roller, a second rotating roller, a cutting assembly and a discharging table. The output end of the motor is coaxially connected with a first chain wheel, the first chain wheel is in transmission connection with a second chain wheel through a first chain, and the second chain wheel is arranged at the end, close to the motor, of the first rotating roller; the second rotating roller is arranged right above the first rotating roller in parallel, a first gear and a second gear are arranged at the ends, close to the motor, of the first rotating roller and the second rotating roller respectively, the first gear is meshed with the second gear, and a third chain wheel and a fourth chain wheel are arranged at the ends, away from the motor, of the first rotating roller and the roller respectively. The third chain wheel is in transmission connection with the fourth chain wheel through a second chain, and the pressing roller is rotationally arranged above the discharging table and is parallel to the roller, the first rotating roller and the cutting assembly. The foam board cutting device can achieve automatic pushing and cutting of foam boards, reduces labor cost, and is high in safety, high in efficiency, easy to operate and high in flexibility.

The invention provides a ganoderma strain SM07 and application thereof. The preservation number of the ganoderma strain (Ganoderma sp.) SM07 is CCTCC (China Center for Type Culture Collection) NO: M 20251816. The bacterial strain is developed in aerial hypha, rapid in hypha growth and high in hypha kinking property, straw can be used as a raw material to produce the biomass lining, and the biomass lining package is pure white and smooth in appearance, light and attractive in texture, has the loose and porous structural characteristic, is excellent in air permeability, can provide good buffering protection and can be used for preparing the biomass lining. And the quality stability in the tobacco leaf storage process is guaranteed. Besides, the environment-friendly characteristic is outstanding, the smoke biomass lining can be degraded by microorganisms in soil and converted into soil organic matter after being used, resource cyclic utilization of agricultural by-products is achieved, traditional plastic foam can be replaced, the problem of white pollution is avoided, and wide market prospects are shown in the field of green packaging.

The present invention belongs to the field of plastic foam processing and crushing technology, and in particular to a foam processing and crushing device. In view of the fact that the existing foam crushing devices proposed in the background technology mostly adopt a single-stage crushing structure, which has the problems of low efficiency, uneven crushing particles, high energy consumption, etc., the following scheme is proposed, including a machine body, wherein the internal ends of the machine body are respectively provided with a pushing chamber and a foam plate crushing chamber, and the interior of the machine body is provided with a foam pre-crushing mechanism, and a connecting rod is provided on the outer wall of the foam pre-crushing mechanism, and the outer wall of one end of the connecting rod is provided with a foam secondary crushing mechanism. The present invention solves the problems of low efficiency, high energy consumption, and easy clogging of traditional equipment through innovative designs such as double-stage crushing, linked feeding, negative pressure conveying, and gradually shrinking crushing gap. While improving the crushing uniformity and processing efficiency, it achieves the comprehensive performance of compact structure and stable operation, and is suitable for various plastic foam recycling scenarios.

After three or four abrasive rock tumbling steps with successively finer and finer adhesive, the rocks are tumbled with pieces of an elastomer, for example plastic foam. The plastic foam may be polyurethane foam. The result is a higher polish than could be achieved by prior abrasive and finishing approaches. A polishing compound may be embedded in the polyurethane foam. Advantages of doing this include that the user gets multiple polishings out of the material base, there is less breakage of the rocks during tumbling process, and the tumbling mix will not “sludge up” if the user were to let the barrel sit after tumbling.

A layered composite includes: a foam core made of a plastic foam; and a first cover layer and a second cover layer, between which the foam core is arranged, wherein at least one of the cover layers is a fiber material layer containing reinforcement fibers embedded in plastic. A plastic resin fills intermediate spaces between the cover layers in and around the foam core and holds the cover layers and the foam core together. The layered composite includes a fire protection layer made of a composite material on a side of the fiber material layer facing away from the foam core. The composite material contains hollow micro-bodies made of ceramics or glass in a plastic material.

The utility model relates to the technical field of foam pumps, and discloses a folding spring all-plastic foam pump which comprises a pipe body, the top of the pipe body is in threaded connection with a connector, the connector is connected with a discharging port, a sealing mechanism is arranged in the connector, the sealing mechanism comprises a threaded ring, and the threaded ring is in threaded connection with the connector. The threaded ring is installed at the top of the discharging port, the inner wall of the threaded ring is in threaded connection with a first screw rod, the first screw rod extends towards the inner end and the outer end respectively, a rotary knob is fixedly installed at the top end of the first screw rod, a sealing block is installed at the inner extending end of the first screw rod, and a through opening is formed in the other end of the sealing block; according to the foam pump, the sealing block is installed at the inner extending end of the first screw rod, and the through opening is formed in the sealing block, so that the position of the through opening of the sealing block can be replaced according to needs, and the situation that the foam pump cannot discharge foam due to the fact that impurities enter the foam pump from the discharging opening is prevented.

This invention discloses a crushing device and method for recycling waste plastics, relating to the field of plastic recycling technology. It includes a machine body placed on the ground, with a crushing chamber, a feed inlet, and a discharge outlet inside. Both the feed inlet and discharge outlet are connected to the crushing chamber, and a feed end is provided at the feed inlet for feeding. A crushing wheel is provided inside the crushing chamber, rotating to crush the plastic. A guide channel is provided along the crushing wheel, with one end extending to the bottom of the crushing wheel and the other end extending towards the middle of the crushing wheel. Air enters the guide channel from the bottom of the crushing wheel and, upon flowing out through the guide channel, pushes the plastic foam to adhere to the surface of the crushing wheel. A conveying assembly is located at the discharge outlet and extends into the crushing chamber. In this application, during the crushing process, the airflow inside the crushing chamber is increased to provide downward pressure on the plastic foam that bounces inside the crushing chamber after crushing.

The invention discloses a sound insulation device for a vehicle and the vehicle with the sound insulation device, and relates to the technical field of vehicles. The sound insulation device is arranged above a motor of the vehicle and comprises a sound insulation body and a sound absorption part. The sound insulation body comprises polypropylene plastic foam and a polypropylene plastic crust, and the polypropylene plastic crust is formed on the outer surface of the polypropylene plastic foam; in the height direction of the sound insulation device, a first cavity is formed in the lower end of the sound insulation body, a second cavity is formed in the upper end of the sound insulation body, sound absorption parts are contained in the first cavity and the second cavity, and the first cavity is suitable for containing a controller of the vehicle. Therefore, the sound insulation device is arranged above the motor, so that the noise transmitted out of the motor is effectively absorbed through the attraction part, the polypropylene plastic foam and the polypropylene plastic crust, the NVH (Noise, Vibration and Acoustic Roughness) performance of the vehicle is improved, and the vehicle use experience feeling of a user is improved.

The application discloses a high-strength high-toughness high-impact-absorption SEBS plastic foaming elastomer and a preparation method thereof, and relates to the technical field of plastic tracks. The components are as follows: 100 parts of hydrogenated styrene-ethylene / butylene-styrene copolymer; 100-150 parts of naphthenic oil; 0.5-1 part of 2,5-dimethyl-2,5-bis(tert-butyl peroxy) hexane; 1-2 parts of trimethylolpropane triacrylate; 30 parts of light calcium powder; 3-5 parts of physically expanded microspheres; 20-30 parts of POE; 0.5 parts of multi-element hindered phenolic antioxidant 1010; 0.3 parts of phosphite antioxidant 168; 0.5 parts of light stabilizer 2020; and 0.3 parts of ultraviolet absorber UV326. The gel content of the high-strength high-toughness high-impact-absorption SEBS plastic foaming elastomer prepared by the application is between 9% and 17.9%, and the SEBS plastic foaming elastomer has good impact absorption and toughness and excellent mechanical properties.

The application discloses a foamed plastic foaming forming machine capable of quickly changing molds and relates to the field of mold application of foamed forming machines, which comprises an equipment workbench, a mold is installed on the top of the equipment workbench through the arrangement of multiple sets of locking assemblies, mold translation mechanisms are installed at four corners of the mold, the mold translation mechanism comprises a lifting assembly and a fixing assembly, a movable column foot capable of lifting is arranged in the lifting assembly, a rigid sliding bead is installed at the bottom of the movable column foot, when the mold needs to be installed, the movable column foot is in an extended state and can smoothly slide on the equipment workbench, after the mold is moved and positioned, the upper mold is used to press down multiple sets of pressing rods, the multiple sets of pressing rods are retracted to drive the multiple sets of movable column feet to also be retracted into the interior, and then the lower mold can stably sit on the workbench, when the mold needs to be disassembled and replaced, the fixing assembly is loosened to trigger a one-way transmission mechanism to make the movable column foot extend again, and the mold can be moved out of the workbench.

The invention relates to a vehicle door handle (4) with electronic operation detection, which contains a handle housing (8) with an integrated primary printed circuit board (11). Said printed circuit board is provided with a signal coupling (15) for connection to the control system of the vehicle and has at least one first electronic component (11a, 11b) for detecting actuations. One or more secondary printed circuit boards (14a, 20a) are arranged in a planar fashion and parallel with respect to the primary printed circuit board and are spatially separated therefrom by a plastic foam layer (14b, 20b) and are fixed in position with respect to the primary printed circuit board (11). Additional electronic components (20c, 14c) which interact with the components on the primary printed circuit board in order to detect operations are located on the secondary printed circuit boards.

The utility model discloses a vacuum type full-automatic PS (polystyrene) plastic foam forming machine, which relates to the technical field of foam production equipment and comprises a device body, an upper die, a lower die and a feed port fixedly connected with the top surface of the device body. And a linkage assembly is arranged in the device body, the linkage assembly is driven by the transmission assembly to conduct mold opening while ejecting and demolding on a formed product, a box door is slidably connected to one face of the device body, and a feeding pipe is fixedly connected to the bottom end of the feeding opening. According to the utility model, the transmission assembly is driven to operate, the upper mold can be promoted to move upwards along with the operation of the transmission assembly, and the linkage assembly can be promoted to move upwards to eject a plastic product formed in the lower mold while the upper mold moves upwards, so that the effect of synchronously opening the mold and stripping the mold is achieved; and the production efficiency of plastic products is further improved.

The utility model relates to the technical field of plastic foamed particle, especially a plastic foamed particle negative pressure conveyor, including the bottom plate, the top of bottom plate all is equipped with the fixed frame, and the top of fixed frame is equipped with the flange disc main part, the top of flange disc main part is equipped with the round tub main part, the bottom of flange disc main part is equipped with the conical tub, and the bottom of conical tub is equipped with the connecting pipe, the sidewall of round tub main part is equipped with L type support frame, and the top of L type support frame is equipped with negative pressure machine mechanism, the input of negative pressure machine mechanism is equipped with the L type pipe that is linked with the top of round tub main part communicates.

The utility model discloses a sodium ion battery packaging structure with a buffering function, which belongs to the technical field of sodium ion battery packaging, and comprises a packaging box and a sodium ion battery body, a sealing cover is arranged at the top of the packaging box, a buffering mechanism is arranged in the packaging box, and the sodium ion battery body is arranged in the buffering mechanism. A drying mechanism is arranged in the sealing cover; the buffer mechanism comprises an inflation nozzle, a plurality of non-slip mats, a rubber air bag and a fire extinguishing agent, the rubber air bag is filled with the fire extinguishing agent, the sides, close to the inner wall of the rubber air bag, of the non-slip mats are fixedly connected with the rubber air bag, and the bottom of the inflation nozzle fixedly communicates with the top of the rubber air bag; the problems that an existing part of structures for packaging the sodium ion battery are buffered through plastic foam, the plastic buffer foam is prone to being damaged in the process of taking out the sodium ion battery, repeated use is not convenient, and the green and environment-friendly target cannot be achieved easily are solved.

The invention discloses a bamboo cellulose micro-nano fiber composite aerogel material and a preparation method and application thereof, and relates to the field of aerogel, the preparation method comprises the following steps: S1, crushing bamboo pulp to obtain bamboo pulp microfibers; s2, adding the bamboo pulp microfiber and bamboo cellulose nanofiber suspension into water, and stirring; s3, sequentially adding silicon dioxide, polysiloxane and boric acid into the dispersion liquid to obtain a premix; s4, adding a polyvinyl alcohol aqueous solution and a glutaraldehyde aqueous solution at room temperature to obtain a reactant; s5, pouring reactants into a mold, and freezing and forming to obtain ice gel; and S6, replacing the ice gel with ethanol, and drying at normal pressure to obtain the composite aerogel material. According to the method, cellulose does not need to be dissolved, cellulose microfibers serve as a firm framework, interpenetrating double networks are constructed through physical entanglement, physical / covalent cross-linking and ice crystal template constraint, multi-scale material interface assembly is achieved, and the composite material can be easily prepared under normal-pressure drying and is expected to serve as a sustainable substitute of plastic foam.

The utility model discloses a plastic foam wire cutting machine, and belongs to the field of wire cutting machines. Aiming at the problem that scraps of a wire cutting machine in the prior art are inconvenient to clean, the plastic foam wire cutting machine disclosed by the utility model has the advantages that the dust cover and the scrap cleaning device are arranged, so that the scraps can be sucked and prevented from being diffused while cutting operation is realized; and the sucked chippings can be stored in the filter screen collecting box, so that subsequent dumping is facilitated. The tension control module is used for controlling the tightness degree of the cutting line, so that the tension stability of the cutting line during cutting operation can be effectively ensured, and meanwhile, a cut section is smooth by selecting a proper cutting line diameter. The surface of the cutting wire is coated with the anti-static coating, cutting is prevented from being affected by static electricity generated in the cutting process, the anti-static coating is additionally arranged on the wire winding cylinder, and static electricity is further prevented from being generated. The spiral grooves are additionally formed in the main guide wheel and the auxiliary guide wheel, so that chippings can be guided to be discharged along the grooves and prevented from being accumulated on the guide wheels.

The application discloses a cold storage and heat preservation plastic foam and a preparation method thereof. The combined material formula comprises a boric acid polyether polyol and a high-hydroxyl-value o-toluidine polyether polyol. The boric acid polyether polyol has a characteristic of a triangular stable structure of boron atoms, and can improve the strength and dimensional stability of a plastic product and delay the attenuation of the strength and dimensional stability of the plastic product in application. The boric acid polyether polyol contains a part of insoluble B=O structure, which is easy to precipitate in the early stage of the reaction of the combined material with isocyanate, forms stable nucleation points, and through the synergistic effect of the high-hydroxyl-value o-toluidine polyether polyol, the cross-linking of product foam fibers is enhanced, the bubbles are inhibited and the bubbles are made more delicate, and the thermal conductivity of the product is reduced. The rapid cross-linking can reduce the volatilization of a foaming agent and reduce the surface bubbles at the end of product flow.