CN111744771B - Reflecting plate production device and preparation method thereof - Google Patents
Reflecting plate production device and preparation method thereof Download PDFInfo
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- CN111744771B CN111744771B CN202010630537.1A CN202010630537A CN111744771B CN 111744771 B CN111744771 B CN 111744771B CN 202010630537 A CN202010630537 A CN 202010630537A CN 111744771 B CN111744771 B CN 111744771B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
- B05D7/04—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber to surfaces of films or sheets
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/004—Reflecting paints; Signal paints
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- Materials Engineering (AREA)
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- Optical Elements Other Than Lenses (AREA)
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- Adhesives Or Adhesive Processes (AREA)
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Abstract
The invention discloses a reflecting plate production device which comprises a base, wherein one side of the base is provided with an upright post, the middle part of the upright post is provided with a mould sieve clamp, and a mould sieve and a vibration generation device are horizontally arranged in the mould sieve clamp; a telescopic mechanism for controlling the inclination of the mould screen is also arranged; a pressing plate mounting arm is further arranged, one end of the pressing plate mounting arm can be matched on a sliding rail vertically arranged on the stand column in a vertically sliding mode, a pressing plate is horizontally and fixedly arranged below the other end of the pressing plate mounting arm, and the pressing plate is arranged over against the range of the sieve holes in the mould sieve; the top plate of stand is fixed in to clamp plate top parallel arrangement one end, and the roof lower surface is provided with the telescopic machanism for the clamp plate control just downwards to clamp plate middle part position, and the lower extreme of the telescopic machanism for the clamp plate control is connected on clamp plate installation arm. The invention also discloses a reflector plate preparation method based on the device. The invention has the advantages of good reliability, excellent performance of the prepared material, good total reflection effect, suitability for industrial production and the like.
Description
The application is a divisional application of a preparation method of a retro-reflection plate applied to a wall body, which is disclosed in patent application No. 201910174959X on 3, 11 and 3 in 2019.
Technical Field
The invention relates to the technical field of building materials, in particular to a reflecting plate production device of a retro-reflecting plate applied to a wall body and a preparation method thereof.
Background
With the continuous increase of the economy of China, the continuous improvement of the quality of life of the China and the continuous rapid development of cities, the building energy consumption becomes an important component of the total energy consumption of China. Therefore, building energy conservation becomes a great means for realizing sustainable development in China.
In summer, solar radiation is one of the largest external disturbances affecting indoor thermal environment, so that not only is indoor comfort reduced, but also building energy consumption loss is increased. The heat brought to the building by the solar radiation causes the surface temperature of the external enclosure structure to rise, and the heat is transferred to the indoor through the external enclosure structure of the building to become the cold load of the building, so that the energy consumption of the air conditioning system is increased. As the building coverage area increases, the urban center absorbs more and more heat from solar radiation, and the thermal conduction effect is increased year by year, so that the temperature of the urban center is higher than that of suburban areas.
In order to reduce the energy consumption loss of the heating ventilation air conditioner and reduce the urban heat island effect, the prior art has a technology of utilizing a building outer wall with a total reflection function to realize directional reflection of solar radiation.
For example, CN107942424A discloses a method for preparing a color-changeable retroreflective material, which comprises immersing a monolayer of colloidal microspheres into a transparent substrate on one side of an adhesive layer to form a monolayer array, thereby forming a color-changeable retroreflective material. The method mainly comprises the following steps: 1) assembling micron-sized colloidal microspheres into a single-layer microsphere array; 2) and transferring the monolayer microsphere array to a transparent substrate with an adhesive layer to enable the colloidal microspheres to be immersed in the adhesive layer. The color-changeable retroreflective material prepared by the invention has the advantages of simple preparation, high reflective brightness, uniform reflective color and the like, and has two unique reflective characteristics, namely illumination/observation coaxial non-discoloration and illumination/observation anisometric discoloration, thereby having good theoretical research and practical application values.
However, this patent only discloses the general principle and steps of preparation, and does not disclose how to reliably transfer monolayer microspheres to a substrate adhesive layer after obtaining an array of monolayer microspheres. The implementability is low.
For another example, CN105301683A also discloses a bonded retroreflective film and a method for preparing the same, wherein the bonded retroreflective film comprises a four-layer structure, the four-layer structure comprises a protective layer, a retroreflective layer, a bonding layer and a substrate layer from top to bottom, and the substrate layer comprises a substrate, an adhesive and an isolation film; the preparation method comprises the following steps: firstly, uniformly spraying a bonding layer on the surface of a base material layer to form a stable structure; secondly, uniformly spreading a retroreflective layer on the surface of the adhesive layer before the adhesive layer is not completely cured; and finally, covering a transparent protective layer on the surface of the retroreflective layer to form a bonded retroreflective film. The directly-pasted retroreflective film is prepared by adopting a four-layer composite technology, the use is simple and convenient, the product has an excellent retroreflective effect by adding the retroreflective microstructure, the outer layer is coated with the protective layer, the service life can be prolonged, the preparation process is simple, the raw materials are simple and easy to obtain, and the production line type production is easy.
However, in the patent, the retroreflective layer is obtained by spraying to obtain the adhesive layer and then uniformly spreading, and the uniform arrangement of glass beads in the retroreflective layer cannot be ensured by the method, so that the total reflection effect of the prepared material is poor.
Therefore, how to obtain a preparation method of the retro-reflective plate with good reliability, excellent performance of the prepared material and good total reflection effect becomes a problem to be considered and solved by the technical personnel in the field.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide a reflecting plate production device of a retro-reflecting plate applied to a wall body and having good reliability, excellent material performance and good total reflection effect and a preparation method thereof. After the solar heat insulation plate is used for an outer wall material, most solar radiation can be reflected in a directional mode, and the heat insulation effect is achieved, so that the cold load of an air conditioner is reduced, and the purposes of energy conservation and emission reduction are achieved.
In order to solve the technical problems, the invention adopts the following technical scheme:
a preparation method of a retro-reflection plate applied to a wall body comprises the following steps: a, obtaining glass beads with the diameter of 3-7 mm; b, obtaining a reflective coating; it is characterized by also comprising: and c, arranging and fixing the glass beads on the mold in an array manner, exposing one side of the glass beads in the air, directly arranging a layer of hot melt adhesive after coating the reflective coating on one side of the glass beads exposed in the air, and bonding and fixing the glass beads coated with the reflective coating on the substrate by virtue of the hot melt adhesive.
Therefore, the glass beads are fixed firstly, then the reflective coating is sprayed, the hot melt adhesive is arranged, and then the glass beads are bonded on the substrate, so that the method has the advantages of simple operation, strong practicability and good reliability.
Preferably, the substrate is an expanded polystyrene board.
Therefore, the heat insulation plate has the advantages of light weight, good heat insulation effect and the like.
Preferably, the diameter of the glass bead is 5 mm.
If the diameter of the glass beads is too small, the preparation is inconvenient; if the diameter of the glass beads is too large, the gaps among the glass beads are too large, the reflectivity is greatly reduced, and the occupied space is increased, so that the preparation of the glass beads with the diameter of 5mm is selected as the optimal.
The glass beads are prepared by the following method, wherein quartz sand 53% in mass ratio, feldspar 23% in mass ratio, borax 14% in mass ratio, sodium carbonate 8% in mass ratio and other auxiliary materials including fluorite and sodium nitrate which respectively account for 1% are crushed and uniformly mixed, the temperature is raised to 1600 ℃ in a glass melting furnace, a molten mass is formed after the reaction is completed, the molten mass is led out to a spherical mold with the diameter of 5mm, and the spherical mold is cooled and formed, so that the glass beads with the diameter of 5mm can be obtained preliminarily.
The glass beads prepared by the method have the advantages of simple preparation process, high yield, no bubbles in the finished product of the glass beads, less impurities, small deviation of the ball diameter, high qualified rate of the finished product and the like. Of course, in practice, other existing techniques may be used to prepare the glass beads or to purchase the finished glass beads directly.
As optimization, before the glass beads are used, the coupling agent with the concentration of 1.2% is adopted to modify the surfaces of the glass beads.
Therefore, the surface of the glass bead is changed from hydrophilic to oleophilic, and the negative influence caused by hydrophilic is avoided.
Preferably, the reflective coating is prepared by the following method: mixing a coupling agent KH560 with ethanol according to the mass ratio of 1:1, adding deionized water to prepare a silane coupling agent aqueous solution with the concentration of 5%, uniformly stirring, adding acetic acid into the solution to make the solution weakly acidic (pH is approximately equal to 5), and obtaining a binder after the coupling agent is hydrolyzed for a certain time and shows cohesiveness; and then adding a wetting agent into part of the flaky aluminum powder or titanium dioxide filler, carrying out magnetic stirring, slowly adding a certain amount of the binder in 1 hour of the magnetic stirring until the binder is in a fluid state after the stirring is finished, and then loading the binder into a spraying device for later use.
The prepared reflective coating has good fluidity, is easy to spray and easy to be guided into a sealed spraying device for storage, and has good binding property with glass beads on one side and hot melt adhesive on the other side. In practice, the existing reflective coating preparation technology can be directly adopted, or the existing reflective coating product can be directly purchased for use.
In the step c, the mould is a mould sieve made of elastic materials, sieve pores are uniformly arrayed on the mould sieve, and the diameter of the sieve pores is less than the diameter of the glass beads by 0.1-1mm (optimally 0.5 mm); and c, spreading glass beads on a mould screen and passing through a vibrating mould screen, enabling the lower half parts of the glass beads to be embedded into the screen holes and to be fully distributed in the screen holes of the mould screen, removing redundant glass beads on the surface of the mould screen, pressing the glass beads embedded into the screen holes into a half of the screen holes by using a pressing plate, integrally spraying a reflective coating on one side of the glass beads exposed in the air, paving a layer of hot melt adhesive to cover the exposed parts of the glass beads after the high-reflective coating is solidified into a high-reflective film, bonding and fixing a base material plate with the same area as the range of the screen holes on the outer side of the hot melt adhesive until the hot melt adhesive is solidified, and removing the glass beads from the mould screen to obtain the retro-reflective plate.
Thus, the method is convenient for spraying the reflecting material and combining the glass beads and the base material, and has the advantages of simple, convenient, fast and reliable operation.
Further, the inner surface layer of the mold sieve is made of rubber materials, the rubber materials of the mold sieve are heated before and/or in the embedding process of the glass beads, so that the rubber materials are softened, the glass beads are embedded into the sieve pores and pressed into the sieve pores with the diameter of one half, after the rubber materials of the mold sieve are cooled and hardened, the reflective coating is sprayed, and finally, before demolding, the rubber materials are heated again, so that the rubber materials are softened, and then demolding is carried out.
Like this, after mould sieve rubber materials softened, can make things convenient for more in glass bead can comparatively firmly imbed the sieve mesh under the effect of vibration, avoid making the glass bead of embedding fall out together when cleaing away unnecessary glass bead, make things convenient for the clamp plate to impress the glass bead of embedding sieve mesh once more in half diameter to the sieve mesh simultaneously, then wait to cool back spraying reflecting material again and lay the hot melt adhesive. The glass beads can be fixed in the process, and the effect of the reflective coating is better ensured so as to ensure the reflective effect of the prepared material. And the glass beads can be conveniently removed from the sieve pores by reheating before demoulding.
Further, the method is prepared by adopting the following reflecting plate production device, wherein the reflecting plate production device comprises a base, one side of the base is vertically provided with an upright post, the middle part of the upright post is horizontally and outwards fixedly provided with a mould sieve supporting arm, the front end of the mould sieve supporting arm is hinged with a mould sieve clamp extending forwards, a mould sieve is horizontally arranged in the mould sieve clamp, and a vibration generation device is also arranged on the mould sieve clamp; a telescopic mechanism mounting arm is horizontally and fixedly arranged on the stand column below the mold screen supporting arm, a telescopic mechanism for mold screen inclination control is arranged at the front end of the telescopic mechanism mounting arm, the telescopic end of the telescopic mechanism for mold screen inclination control extends upwards and is hinged below a mold screen clamp, the mold screen is rectangular as a whole, one side, away from the stand column, of the mold screen is an open side, and the other three sides of the mold screen are fence sides provided with upward fences; a pressing plate mounting arm is horizontally arranged on the stand column above the supporting arm of the mold screen, one end of the pressing plate mounting arm can be matched on a sliding rail vertically arranged on the stand column in a vertically sliding manner, a pressing plate is horizontally and fixedly arranged below the other end of the pressing plate mounting arm, and the pressing plate is arranged over the range of the screen holes in the mold screen; the top plate of stand is fixed in to clamp plate top parallel arrangement one end, and the roof lower surface is provided with the telescopic machanism for the clamp plate control just downwards to clamp plate middle part position, and the lower extreme of the telescopic machanism for the clamp plate control is connected on clamp plate installation arm.
When the device is used for preparing the reflecting plate, firstly, modified glass beads are poured into a heated mould sieve from one side close to the upright column, then the mould sieve is driven by a vibration generating device to vibrate, so that the glass beads are spread and correspondingly fall into sieve pores, meanwhile, the mould sieve is controlled to tilt and is controlled to retract by a telescopic mechanism, so that the open side of the mould sieve is gradually inclined downwards, the glass beads gradually flow to the open side of the mould sieve under the combined action of tilting and vibration and fall into all the sieve pores, and redundant glass beads fall out from the open side of the mould sieve and can be contained by a container; then controlling the telescopic mechanism for controlling the inclination of the mold screen to extend out to drive the mold screen to return to be horizontal, controlling the telescopic mechanism for controlling the pressing plate to press the pressing plate downwards, and pressing the lower half parts of the glass beads into the sieve holes of the mold; after the mold screen is cooled, spraying a reflective coating on the upper surface of the mold screen, after the highly reflective coating is solidified into a highly reflective film, laying a hot melt adhesive, bonding and fixing a substrate plate with the same area as the range of the screen holes on the upper side of the hot melt adhesive, pressing down and compacting by using a pressing plate until the hot melt adhesive is solidified, heating the mold screen again, and then removing the substrate plate together with the glass beads from the mold screen to obtain the retro-reflective plate.
Therefore, the device has the advantages of convenient, simple, quick and reliable operation and the like, and can realize the industrial production and preparation of the reflecting plate.
Furthermore, a resistance wire is embedded in the die screen and is externally connected with a control circuit.
Like this, the mode that adopts direct buries the resistance wire underground in the mould sieve heats the mould sieve, conveniently realizes heating control in needs, and the heating is from the inside heating of mould sieve, can not exert an influence to the hot melt adhesive when the drawing of patterns.
When the retro-reflection emitting plate prepared by the invention is used for an outer wall, under the combined action of the glass beads and the high-reflection material, the aim of finishing the retro-reflection of solar radiation can be fulfilled, most of the solar radiation is prevented from entering a building, and the reflected radiation cannot irradiate other buildings, so that the possibility of becoming the cold load of other buildings is avoided. And the materials used by the novel retro-reflection material are all green, so that the environment is not polluted, and the used tools and raw materials can be recycled.
In conclusion, the invention can be used for preparing the external wall regression transmitting plate, and has the advantages of good reliability, excellent performance of the prepared material, good total reflection effect, suitability for industrial production and the like. After the solar heat insulation plate is used for an outer wall material, most solar radiation can be reflected in a directional mode, and the heat insulation effect is achieved, so that the cold load of an air conditioner is reduced, and the purposes of energy conservation and emission reduction are achieved.
Drawings
FIG. 1 is a schematic view of the structure of a retroreflective sheet produced in an example of the present invention.
FIG. 2 is a schematic view showing the structure of a reflector production apparatus used in the example of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Preferred embodiments: a preparation method of a retro-reflection plate applied to a wall body comprises the following steps: a, obtaining glass beads with the diameter of 3-7 mm; b, obtaining a reflective coating; it is characterized by also comprising: and c, arranging and fixing the glass beads on the mold in an array manner, exposing one side of the glass beads in the air, directly arranging a layer of hot melt adhesive after coating the reflective coating on one side of the glass beads exposed in the air, and bonding and fixing the glass beads coated with the reflective coating on the substrate by virtue of the hot melt adhesive.
Therefore, the glass beads are fixed firstly, then the reflective coating is sprayed, the hot melt adhesive is arranged, and then the glass beads are bonded on the substrate, so that the method has the advantages of simple operation, strong practicability and good reliability.
The obtained retroreflective sheet is shown in FIG. 1. Wherein reference numeral 1 is a base material, reference numeral 2 is a hot melt adhesive, reference numeral 3 is a reflective coating, and reference numeral 4 is glass beads.
Wherein the base material is an expanded polystyrene board.
Therefore, the heat insulation plate has the advantages of light weight, good heat insulation effect and the like.
Wherein the diameter of the glass bead is 5 mm.
If the diameter of the glass beads is too small, the preparation is inconvenient; if the diameter of the glass beads is too large, the gaps among the glass beads are too large, the reflectivity is greatly reduced, and the occupied space is increased, so that the preparation of the glass beads with the diameter of 5mm is selected as the optimal.
The glass beads are prepared by the following method, wherein 53% of quartz sand, 23% of feldspar, 14% of borax, 8% of soda ash and other auxiliary materials of fluorite and sodium nitrate which respectively account for 1% in mass ratio are crushed and uniformly mixed, the temperature is raised to 1600 ℃ in a glass melting furnace, after the reaction is finished, a molten mass is formed, the molten mass is led out to a spherical mold with the diameter of 5mm, and the spherical mold is cooled and formed, so that the glass beads with the diameter of 5mm can be obtained preliminarily.
The glass beads prepared by the method have the advantages of simple preparation process, high yield, no bubbles in the finished product of the glass beads, less impurities, small deviation of the ball diameter, high qualified rate of the finished product and the like. Of course, in practice, other existing techniques may be used to prepare the glass beads or to purchase the finished glass beads directly.
Wherein, before the glass beads are used, the coupling agent with the concentration of 1.2% is adopted to modify the surfaces of the glass beads.
Therefore, the surface of the glass bead is changed from hydrophilic to oleophilic, and the negative influence caused by hydrophilic is avoided.
The reflective coating is prepared by the following method: mixing a coupling agent KH560 with ethanol according to the mass ratio of 1:1, adding deionized water to prepare a silane coupling agent aqueous solution with the concentration of 5%, uniformly stirring, adding acetic acid into the solution to make the solution weakly acidic (pH is approximately equal to 5), and obtaining a binder after the coupling agent is hydrolyzed for a certain time and shows cohesiveness; and then adding a wetting agent into part of the flaky aluminum powder or titanium dioxide filler, carrying out magnetic stirring, slowly adding a certain amount of the binder in 1 hour of the magnetic stirring until the binder is in a fluid state after the stirring is finished, and then loading the binder into a spraying device for later use.
The prepared reflective coating has good fluidity, is easy to spray and guide into a sealed spraying device for storage, and has good binding property with the glass beads on one side and the hot melt adhesive on the other side. The prepared material has the characteristic of good retro-reflection by adopting the flaky aluminum powder or titanium dioxide filler, the solar radiation is reflected along the incident direction, most of the radiation heat is prevented from being transmitted to the indoor space, the reflected light returns along the original path and hardly irradiates on other buildings, and the extra cold load brought to other buildings is avoided. In practice, the existing reflective coating preparation technology can be directly adopted, or the existing reflective coating product can be directly purchased for use.
In the step c, the mould is a mould sieve made of elastic materials, sieve pores are uniformly arrayed on the mould sieve, and the diameter of each sieve pore is smaller than the diameter of the glass bead by 0.1-1mm (optimally 0.5); and c, spreading glass beads on a mould screen and passing through a vibrating mould screen, enabling the lower half parts of the glass beads to be embedded into the screen holes and to be fully distributed in the screen holes of the mould screen, removing redundant glass beads on the surface of the mould screen, pressing the glass beads embedded into the screen holes into a half of the screen holes by using a pressing plate, integrally spraying a reflective coating on one side of the glass beads exposed in the air, paving a layer of hot melt adhesive to cover the exposed parts of the glass beads after the high-reflective coating is solidified into a high-reflective film, bonding and fixing a base material plate with the same area as the range of the screen holes on the outer side of the hot melt adhesive until the hot melt adhesive is solidified, and removing the glass beads from the mould screen to obtain the retro-reflective plate.
Thus, the method is convenient for spraying the reflecting material and combining the glass beads and the base material, and has the advantages of simple, convenient, fast and reliable operation.
The inner surface layer of the mold sieve is made of a rubber material, the rubber material of the mold sieve is heated before and/or in the embedding process of the glass beads, so that the rubber material is softened, the glass beads are embedded into the sieve pores and pressed into the sieve pores with the diameter of one half, after the rubber material of the mold sieve is cooled and hardened, the reflective coating is sprayed, and finally, before demolding, the rubber material is heated again, so that the rubber material is softened, and then demolding is carried out.
Like this, after mould sieve rubber materials softened, can make things convenient for more in glass bead can comparatively firmly imbed the sieve mesh under the effect of vibration, avoid making the glass bead of embedding fall out together when cleaing away unnecessary glass bead, make things convenient for the clamp plate to impress the glass bead of embedding sieve mesh once more in half diameter to the sieve mesh simultaneously, then wait to cool back spraying reflecting material again and lay the hot melt adhesive. The glass beads can be fixed in the process, and the effect of the reflective coating is better ensured so as to ensure the reflective effect of the prepared material. And the glass beads can be conveniently removed from the sieve pores by reheating before demoulding.
In the embodiment, the method is prepared by adopting the reflecting plate production device shown in fig. 2, the reflecting plate production device comprises a base 5, an upright post 6 is vertically arranged on one side of the base 5, a mold sieve supporting arm 7 is horizontally and outwards fixedly arranged in the middle of the upright post 6, the front end of the mold sieve supporting arm 7 is hinged with a mold sieve clamp 8 extending forwards, a mold sieve 9 is horizontally arranged in the mold sieve clamp 8, and a vibration generation device 10 is also arranged on the mold sieve clamp 8; a telescopic mechanism mounting arm 17 is horizontally and fixedly arranged on the stand column below the support arm of the mold sieve 9, a telescopic mechanism 16 for controlling the inclination of the mold sieve is arranged at the front end of the telescopic mechanism mounting arm 17, the telescopic end of the telescopic mechanism 16 for controlling the inclination of the mold sieve extends upwards and is hinged below the mold sieve clamp 8, the mold sieve 9 is rectangular as a whole, one side away from the stand column is an open side, and the other three sides are fence sides provided with upward fences; a pressing plate mounting arm 12 is horizontally arranged on the upright column above the mold screen supporting arm 7, one end of the pressing plate mounting arm 12 is vertically and slidably matched with a sliding rail 13 vertically arranged on the upright column 6, a pressing plate 11 is horizontally and fixedly arranged below the other end of the pressing plate mounting arm 12, and the pressing plate 11 is arranged over against the range of the screen holes in the mold screen; a top plate 15 with one end fixed on the upright column is arranged above the pressing plate 11 in parallel, a telescopic mechanism 14 for controlling the pressing plate is downwards arranged at the position, right opposite to the middle part of the pressing plate, of the lower surface of the top plate 15, and the lower end of the telescopic mechanism 14 for controlling the pressing plate is connected to a pressing plate mounting arm.
When the device is used for preparing the reflecting plate, firstly, modified glass beads are poured into a heated mould sieve from one side close to the upright column, then the mould sieve is driven by a vibration generating device to vibrate, so that the glass beads are spread and correspondingly fall into sieve pores, meanwhile, the mould sieve is controlled to be inclined and retracted by a telescopic mechanism, so that the open side of the mould sieve is gradually inclined downwards, the glass beads gradually flow to the open side of the mould sieve under the combined action of inclination and vibration and fall into all the sieve pores, and redundant glass beads fall out from the open side of the mould sieve and can be contained by a container; then controlling the telescopic mechanism for controlling the inclination of the mold screen to extend out to drive the mold screen to be horizontal, controlling the telescopic mechanism for controlling the pressing plate to press the pressing plate downwards, and pressing the lower half parts of the glass beads into the sieve holes of the mold; after the mould sieve is cooled, spraying reflective coating on the upper surface of the mould sieve, paving hot melt adhesive, bonding and fixing a substrate plate with the same area as the sieve pore range on the upper side of the hot melt adhesive, pressing and compacting by adopting a pressing plate until the hot melt adhesive is solidified, heating the mould sieve again, and then removing the substrate plate and the glass beads from the mould sieve together to obtain the retro-reflector plate.
In specific implementation, the compression plate control telescopic mechanism 14 and the die sieve inclination control telescopic mechanism 16 are preferably realized by adopting a lead screw nut transmission mechanism, so that accurate control is more favorably realized. Of course, the device can be realized by adopting the existing mechanisms such as a hydraulic cylinder or an electric push rod. In addition, when the method is implemented, the operations of pouring the glass beads, spraying the reflective material, paving the hot melt adhesive and the like can be realized by adopting the control of a manipulator or manual field operation.
Therefore, the device has the advantages of convenient, simple, quick and reliable operation and the like, and can realize the industrial production and preparation of the reflecting plate.
Wherein, a resistance wire is embedded in the die sieve and is externally connected with a control circuit.
Like this, the mode that adopts direct buries the resistance wire underground in the mould sieve heats the mould sieve, conveniently realizes heating control in needs, and the heating is from the inside heating of mould sieve, can not exert an influence to the hot melt adhesive when the drawing of patterns.
When the retro-reflection emitting plate prepared by the invention is used for an outer wall, under the combined action of the glass beads and the high-reflection material, the aim of finishing the retro-reflection of solar radiation can be fulfilled, most of the solar radiation is prevented from entering a building, and the reflected radiation cannot irradiate other buildings, so that the possibility of becoming the cold load of other buildings is avoided. And the materials used by the novel retro-reflection material are all green, so that the environment is not polluted, and the used tools and raw materials can be recycled.
Claims (9)
1. A reflecting plate production device is applied to the preparation of a retro-reflecting plate of a wall body and is characterized by comprising a base, wherein one side of the base is vertically provided with an upright post, the middle part of the upright post is horizontally and outwards fixedly provided with a mold sieve supporting arm, the front end of the mold sieve supporting arm is hinged with a mold sieve clamp extending forwards, a mold sieve is horizontally arranged in the mold sieve clamp, and a vibration generation device is also arranged on the mold sieve clamp; a telescopic mechanism mounting arm is horizontally and fixedly arranged on the stand column below the mold screen supporting arm, a telescopic mechanism for mold screen inclination control is arranged at the front end of the telescopic mechanism mounting arm, the telescopic end of the telescopic mechanism for mold screen inclination control extends upwards and is hinged below a mold screen clamp, the mold screen is rectangular as a whole, one side, away from the stand column, of the mold screen is an open side, and the other three sides of the mold screen are fence sides provided with upward fences; a pressing plate mounting arm is horizontally arranged on the stand column above the supporting arm of the mold screen, one end of the pressing plate mounting arm can be matched on a sliding rail vertically arranged on the stand column in a vertically sliding manner, a pressing plate is horizontally and fixedly arranged below the other end of the pressing plate mounting arm, and the pressing plate is arranged over the range of the screen holes in the mold screen; the top plate of stand is fixed in to clamp plate top parallel arrangement one end, and the roof lower surface is provided with the telescopic machanism for the clamp plate control just downwards to clamp plate middle part position, and the lower extreme of the telescopic machanism for the clamp plate control is connected on clamp plate installation arm.
2. The apparatus for producing a reflection plate as claimed in claim 1, wherein resistance wires are embedded in the mold screen and externally connected to a control circuit.
3. A reflector plate production method characterized by being realized by the reflector plate production apparatus of claim 1 or claim 2, comprising the steps of: a, obtaining glass beads with the diameter of 3-7 mm; b, obtaining a reflective coating; c, arranging and fixing the glass beads on the mold in an array manner, exposing one side of the glass beads in the air, coating a reflective coating on one side of the glass beads exposed in the air, directly setting a layer of hot melt adhesive after the reflective coating is cured, and bonding and fixing the glass beads coated with the reflective coating on a substrate by means of the hot melt adhesive;
the mould is the mould sieve, and the mould sieve is made of elastic material.
4. The method of manufacturing a reflection plate according to claim 3, wherein the screen holes are uniformly arranged in an array on the screen of the mold, and the diameter of the screen holes is smaller than the diameter of the glass beads by 0.1 to 1 mm; the preparation method comprises the following steps of scattering glass beads on a mould screen, vibrating the mould screen to enable the lower half parts of the glass beads to be embedded into screen holes and to be fully distributed in the screen holes of the mould screen, removing redundant glass beads on the surface of the mould screen, pressing the glass beads embedded into the screen holes into a half of the screen holes by a pressing plate, spraying a reflective coating on one side of the glass beads exposed in the air, after the reflective coating is solidified into a reflective film, laying a layer of hot melt adhesive to cover the exposed parts of the glass beads, bonding and fixing a base material plate with the same area as the range of the screen holes on the outer side of the hot melt adhesive, and removing the glass beads from the mould screen until the hot melt adhesive is solidified to obtain the retro-reflective plate;
the substrate is an expanded polystyrene board.
5. The method for preparing a reflecting plate according to claim 4, wherein the glass beads are prepared by crushing and mixing 53 mass% of quartz sand, 23 mass% of feldspar, 14 mass% of borax, 8 mass% of soda ash and 1 mass% of other auxiliary materials of fluorite and sodium nitrate uniformly, heating the mixture in a glass melting furnace to 1600 ℃, forming a molten mass after the reaction is finished, and drawing the molten mass into a spherical mold with the diameter of 5mm for cooling and forming.
6. The method of manufacturing a reflection plate according to claim 4, wherein the surfaces of the glass beads are modified with a coupling agent before use.
7. The method of manufacturing a reflection plate according to claim 4, wherein the reflective paint is manufactured by the following method: mixing a coupling agent KH560 with ethanol according to a mass ratio of 1:1, adding deionized water to prepare a silane coupling agent aqueous solution with the concentration of 5%, uniformly stirring, adding acetic acid into the solution to make the solution weakly acidic, and obtaining a binder after the coupling agent is hydrolyzed for a certain time and shows cohesiveness; and then adding a wetting agent into part of the flaky aluminum powder or titanium dioxide filler, carrying out magnetic stirring, slowly adding a certain amount of the binder in 1 hour of the magnetic stirring until the binder is in a fluid state after the stirring is finished, and then loading the binder into a spraying device for later use.
8. The method for manufacturing a reflection plate according to claim 7, wherein the inner surface layer of the mold screen is made of a rubber material, and the rubber material of the mold screen is heated before and/or during the embedding of the glass beads to soften the rubber material, the glass beads are embedded in the screen holes and pressed into half the diameter of the screen holes, after the rubber material of the mold screen is cooled and hardened, the reflective coating is sprayed, and before the mold is removed, the rubber material is heated again to soften the rubber material, and then the mold is removed.
9. The method for manufacturing a reflective plate according to claim 3, wherein when the reflective plate manufacturing apparatus is used for manufacturing a reflective plate, the modified glass beads are poured into the heated mold sieve from the side close to the upright, then the vibration generating apparatus is used to drive the mold sieve to vibrate, so that the glass beads are spread out and fall into the sieve holes correspondingly, and meanwhile, the telescopic mechanism for controlling the inclination of the mold sieve is retracted, so that the open side of the mold sieve is inclined downwards gradually, the glass beads gradually flow towards the open side of the mold sieve and fall into all the sieve holes under the combined action of inclination and vibration, and the redundant glass beads fall out from the open side of the mold sieve and can be received by a container; then controlling the telescopic mechanism for controlling the inclination of the mold screen to extend out to drive the mold screen to return to be horizontal, controlling the telescopic mechanism for controlling the pressing plate to press the pressing plate downwards, and pressing the lower half parts of the glass beads into the sieve holes of the mold; after the mould sieve is cooled, spraying a reflective coating on the upper surface of the mould sieve, after the reflective coating is solidified into a reflective film, laying a hot melt adhesive, bonding and fixing a substrate plate with the same area as the sieve pore range on the upper side of the hot melt adhesive, pressing down and compacting by using a pressing plate until the hot melt adhesive is solidified, heating the mould sieve, and then removing the substrate plate and the glass beads from the mould sieve together to obtain the reflective plate.
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| CN201910174959.XA CN109914727B (en) | 2019-03-11 | 2019-03-11 | Preparation method of retro-reflection plate applied to wall |
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| CN113041715B (en) * | 2021-03-11 | 2022-07-19 | 清远华滤环保设备有限公司 | Filter piece processing equipment and filter piece processing method |
| CN113334172B (en) * | 2021-07-06 | 2022-02-22 | 无锡市苏良精密机械有限公司 | Numerical control double-sided grinding machine |
| CN113399230A (en) * | 2021-07-15 | 2021-09-17 | 四川大学 | Structure of material for selectively absorbing and reflecting solar thermal radiation |
| CN115678428A (en) * | 2022-11-18 | 2023-02-03 | 安徽富乐德科技发展股份有限公司 | Preparation method of ceramic coating on inner wall of rapid annealing furnace |
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| CN109914727B (en) | 2020-07-28 |
| CN111744771A (en) | 2020-10-09 |
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