CN108433627B - Preparation method of toilet seat metal layer, toilet seat and production method thereof - Google Patents
Preparation method of toilet seat metal layer, toilet seat and production method thereof Download PDFInfo
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- CN108433627B CN108433627B CN201810177326.XA CN201810177326A CN108433627B CN 108433627 B CN108433627 B CN 108433627B CN 201810177326 A CN201810177326 A CN 201810177326A CN 108433627 B CN108433627 B CN 108433627B
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- toilet seat
- metal layer
- layer
- heat
- seat ring
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Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K13/00—Seats or covers for all kinds of closets
- A47K13/24—Parts or details not covered in, or of interest apart from, groups A47K13/02 - A47K13/22, e.g. devices imparting a swinging or vibrating motion to the seats
- A47K13/30—Seats having provisions for heating, deodorising or the like, e.g. ventilating, noise-damping or cleaning devices
- A47K13/305—Seats with heating devices
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K13/00—Seats or covers for all kinds of closets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C2045/1486—Details, accessories and auxiliary operations
- B29C2045/14868—Pretreatment of the insert, e.g. etching, cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/769—Sanitary equipment
- B29L2031/7694—Closets, toilets
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Toilet Supplies (AREA)
Abstract
The invention discloses a preparation method of a metal layer of a toilet seat, a toilet seat and a production method thereof, wherein the preparation method of the metal layer of the toilet seat is to punch a metal material into a toilet seat shape, the upper surface and the lower surface of the metal material are cambered surfaces, guide grooves and notches are formed on the upper surface of the metal material, and reinforcing ribs are formed on the lower surface of the metal layer; the notch is used for installing a seating detection sensor or a temperature sensor; and roughening one surface of the metal material with the diversion trench by an acid etching or laser etching process to form a micro-scale or nano-scale hole. The metal layer has high heat conduction speed, the surface of the metal layer has larger specific surface area, the metal layer is tightly combined with resin or other materials with heat conduction and insulation functions, the seating surface layer is not easy to fall off, the service life is prolonged, and the safety is improved; the heat conduction speed of the toilet seat is high, the production process is simple, and the heat conduction and insulation capabilities of the sitting surface layer are good, so that the toilet seat is not easy to fall off; when a user uses the multifunctional sitting surface layer, the sitting surface layer is more comfortable in contact with the skin, and the safety performance is high.
Description
Technical Field
The invention relates to the field of bathroom products, in particular to a preparation method of a heat conduction layer of a toilet seat, a toilet seat and a production method thereof.
Background
At present, the intelligent and humanized toilet seat is a trend in the bathroom industry, so in order to relieve the phenomenon that a toilet seat is cold or moist when a user uses a toilet in winter or in low-temperature weather, the intelligent toilet seat is always in a heating working state so as to ensure that the toilet seat keeps constant temperature and improve the comfort of the user in use, but the toilet seat adopting the working mode has large electricity consumption and potential safety hazard, and the common toilet seat in the market is made of plastic materials which are more prone to aging in an environment higher than room temperature for a long time; in order to solve the problems, in the field of intelligent toilets, a toilet device capable of rapidly heating a toilet seat has a good rapid heating effect, but has a plurality of defects.
In the patent document (patent number: CN 101166452), a surface decoration layer is directly coated on the outer surface of the heat-conducting metal to play a role in decoration and improvement of corrosion resistance of the surface of the heat-conducting metal, and the heat-conducting metal is not described to have an insulating protection function, so that the risks of easy falling off of a surface layer, low safety coefficient and the like exist; in addition, the surface coating surface decorative layer is not subjected to heat conduction and insulation modification treatment, does not have a strong heat conduction function, and influences the quick heating function of the toilet seat; the radiation heating body adopts a lamp heater, so that the space occupied is large, the heating speed is low, and the efficiency is low; after radiation heating, the heat is transferred to the radiation heat absorption layer through an air medium, and then the heat is further transferred through the metal layer, so that the heat loss is large, the lamp heater has the risk of aging and bursting, and the potential safety hazard is large.
In the patent document (patent number: CN 204708761U), the metal layer is directly used as a sitting surface layer, so that the safety coefficient is low, and the risk of electric leakage and electric shock exists; the toilet seat does not adopt heat insulation and heat reflection measures, so that the heat loss is large, the quick heating effect is poor, and the energy is wasted.
The reinforcing part of the toilet seat upper plate in the patent document (patent number: CN 102379655B) consists of a fabric woven by reinforced fibers and resin, so that the heat transfer efficiency is low, and meanwhile, the toilet seat upper plate manufactured by the process cannot reach smaller thickness, so that the quick heating effect is still poor, the processing process is complex, and the operation difficulty is high; there is also a risk of adhesive failure of the upper and lower toilet seat panels.
Disclosure of Invention
The invention aims to overcome the defects or problems in the background art and provide a preparation method of a metal layer of a toilet seat, a toilet seat and a production method thereof, wherein the heat conduction layer of the toilet seat is made of a metal material, and has high heat conductivity and high heat conduction speed, so that the toilet seat realizes a quick heating function; the diversion trenches are formed on the surface of the metal material and are roughened, so that the specific surface area of the metal material is increased, the metal layer can be compactly combined with resin or other materials with heat conduction and insulation functions, the stress effect of the metal layer and the resin layer can be reduced, the heat conduction and insulation seating surface layer is not easy to fall off, the service life is prolonged, and the safety is improved; in the production method of the toilet seat, the heat-conducting and insulating sitting surface layer formed on the upper surface of the metal layer through injection molding or methyl methacrylate casting technology can reach smaller thickness, so that the quick heating function is realized while the safety is ensured; the toilet seat made of the metal layer has simple process, high feasibility and high heat conduction speed; the seating surface layer of the heat-conducting insulating material has good heat-conducting insulating capability, and is firmly bonded with the metal layer and is not easy to fall off; when a user uses the multifunctional sitting surface layer, the sitting surface layer is more comfortable in contact with the skin, and the safety performance is high.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the preparation method of the metal layer of the toilet seat ring (marked as a first technical method) comprises the steps of stamping a metal material into a toilet seat ring shape through a stamping process, wherein the upper surface and the lower surface of the metal material are cambered surfaces, forming guide grooves and notches on the upper surface of the metal material, and forming reinforcing ribs on the lower surface of the metal layer; the notch is used for installing a seating detection sensor or a temperature sensor; and roughening one surface of the metal material, on which the diversion trench is formed, through an acid etching or laser etching process to form micro-scale or nano-scale holes.
The invention also provides a method for producing the toilet seat (marked as a second technical scheme), which comprises the following steps: step 1: preparing composite resin master batches for nano injection molding; step 2: the composite resin master batch is injection molded on one surface of the metal layer, on which the diversion trench is formed, prepared in the preparation method of the metal layer of the toilet seat according to the first technical scheme through a nano injection molding process, so as to form the seating surface layer of the toilet seat.
The invention also provides a method for producing the toilet seat (marked as a third technical scheme), which comprises the following steps: step 1: preparing a methyl methacrylate prepolymer mixed solution; step 2: the mixed solution of methyl methacrylate prepolymer is polymerized and molded on one surface of the metal layer on which the diversion trench is formed, which is prepared in the preparation method of the metal layer of the toilet seat according to the first technical scheme, through a casting process, so as to form the seating surface layer of the toilet seat.
Based on the second technical scheme, a fourth technical scheme is also provided, in the fourth technical scheme, the composite resin master batch comprises thermoplastic resin containing amino groups or ester groups, heat-conducting insulating powder, reinforcing fibers, a toughening agent, a flame retardant and a processing aid; the step 1 comprises the following steps: pretreatment, namely treating the surfaces of the heat-conducting insulating powder and the reinforcing fibers by adopting a coupling agent.
Based on the third technical scheme, a fifth technical scheme is also provided, in the fifth technical scheme, the methyl methacrylate prepolymer mixed solution is formed by mixing methyl methacrylate prepolymer, multifunctional acrylate monomers, long-chain acrylate monomers, heat-conducting insulating powder, reinforcing fibers, an initiator and an auxiliary agent according to a certain proportion; the step 1 comprises the following steps: pretreatment, namely treating the surfaces of the heat-conducting insulating powder and the reinforcing fibers by adopting a coupling agent; prepolymerization methyl methacrylate monomer is initially polymerized into methyl methacrylate prepolymer under the action of an initiator.
Based on the fifth technical means, a sixth technical means is further provided, wherein in the sixth technical means, the step 2 includes the steps of: stirring and vacuumizing the methyl methacrylate prepolymer mixed solution in a vacuum chamber; fixing the seating detection sensor and the temperature sensor in a notch on the surface of the metal layer; fixing the metal layer in a mold sprayed with a release agent and vacuumizing; the mixed solution of methyl methacrylate prepolymer is slowly poured into a mould, and pressure is applied at a certain temperature to polymerize the mixed solution.
Based on the sixth technical means, a seventh technical means is further provided, in which the step 2 further includes the steps of: pretreatment of metal surfaces: the surface of the metal layer, on which the diversion trench is formed, is treated by silane containing alkoxy ester functional groups to form an organosilane film.
Based on any one of the second to seventh technical solutions, an eighth technical solution is further provided, and in the eighth technical solution, the method further includes the following steps: step 3: adhering a heating component to the lower surface of the metal layer to prepare an upper plate of the seat ring; step 4: one or more of PBT, PPS, PA, PPA, ABS, PMMA and polyurethane matrix resin are made into a seat ring bottom plate with the shape matched with the seat ring upper plate by adopting an injection molding process; step 5: and the seat ring upper plate and the seat ring bottom plate are jointed and formed through a welding process.
Based on the eighth technical means, there is also provided a ninth technical means, in which the step 3 further includes the steps of: and the lower surface of the heating component is glued with a heat insulating material, and the lower surface of the heat insulating material is glued with a heat reflecting material to respectively form a heat insulating layer and a heat reflecting layer of the seat ring upper plate.
The invention also provides a toilet seat (marked as a tenth technical scheme), which comprises a seat upper plate and a seat bottom plate, wherein the seat upper plate and the seat bottom plate are manufactured by the toilet seat production method according to the ninth technical scheme; the seat ring upper plate and the seat ring bottom plate enclose and form a cavity inside.
Based on the tenth technical means, there is also provided an eleventh technical means, in which the seating surface layer includes a seating portion and a supporting portion located at a side surface and connected to a seat ring bottom plate; the thickness of the supporting part is larger than that of the sitting part.
Based on the eleventh technical means, there is also provided a twelfth technical means, in which the thickness of the sitting portion is 0.1-2.5mm; the thickness of the supporting part is 0.1-5mm.
Based on the tenth technical means, there is also provided a thirteenth technical means, wherein in the thirteenth technical means, the thickness of the metal layer is 0.1-5mm.
From the above description of the present invention, compared with the prior art, the present invention has the following advantages:
1. in the technical scheme, the outer surface of the metal layer on the toilet seat is roughened to form micro-scale or nano-scale holes, so that the specific surface area of the surface of the metal material is increased, the metal material can form a stable and firm anchor bolt structure when being combined with resin or other heat-conducting insulating materials, and the resin or other heat-conducting insulating materials are ensured to have good stability and not to fall off easily on the surface of the metal material; because the stress generated after the metal material is combined with the organic materials such as resin or other heat-conducting insulating materials is larger, the arrangement of the micro-scale or nano-scale holes also plays a role of dispersing the stress, so that the resin or other heat-conducting insulating materials are not easy to delaminate and separate after being combined with the metal material, the service life and the safety of the toilet seat are ensured, and the user experience is better; the surface of the metal layer is not in leakage injection and the like during injection molding, in the technical scheme, the flow guide grooves are formed in the surface of the metal material, resin materials flow in and are uniformly distributed between the surface of the metal material and the mold along the flow guide grooves during injection molding, the problems of leakage injection, material shortage or uneven casting and the like possibly existing during injection molding of the thin layer on the surface of the metal material with large area are solved, and meanwhile, the flow guide grooves are arranged, so that the formation quantity of micro-scale or nano-scale holes on the surface of the metal layer is increased, and the specific surface area of the surface of the metal material is further increased.
2. Through forming the strengthening rib at the internal surface punching press of metal material, improve the holistic intensity of metal level for when the metal level is being applied to in the toilet seat, the toilet seat has better ability of bearing human gravity, can reduce the thickness of metal level as far as, thereby guarantees that the toilet seat can reach better quick hot effect, has not only alleviateed the weight of toilet seat effectively, has reduced manufacturing cost simultaneously.
3. The notch is punched in the metal material, so that the seating detection sensor and the stability sensor can be conveniently installed, the redundant space is not occupied, and the flatness of the metal surface is ensured.
4. The composite resin master batch is injected on the surface of a metal layer through a nano injection molding process or the mixed solution of methyl methacrylate and prepolymer is polymerized on the surface of the metal layer through a casting process, so that two materials form an anchor bolt structure on the surface of the metal layer with micro-scale or nano-scale holes, the bonding between the sitting surface layer and the metal layer is compact and firm, compared with the traditional coating type sitting surface layer, the composite resin master batch or the mixed solution of methyl methacrylate and prepolymer is not easy to fall off after being combined or polymerized with the surface of the metal layer for a long time, the safety and the reliability of a user during use are ensured, and meanwhile, the hydrolysis resistance and the ageing resistance of the composite resin for nano injection molding are good, so that the toilet seat ring is effectively ensured to have longer service life; moreover, the composite resin master batch and the metal layer are adopted for compounding, so that the recovery rate is high, and the energy conservation and the environmental protection are realized; the seating surface layer is jointed or cast on the surface of the metal layer by a nano injection molding process, so that the manufacturing of the seating surface layer with extremely thin thickness can be realized, and the thickness of the seating surface layer has the most obvious influence on the quick heating effect of the seat ring upper plate in the factors of the thickness of the seating surface layer, the heat conductivity coefficient of the seating surface layer and the power of the heating member, therefore, in the technical scheme, the seating surface layer with relatively thin thickness manufactured by the nano injection molding process or the casting process greatly improves the heat conductivity speed of the seating surface layer, ensures good use experience of users, and simultaneously, effectively saves the material consumption and reduces the cost.
5. The composite resin master batch filled with the heat-conducting insulating powder or the methyl methacrylate prepolymer mixed solution is combined on the surface of the metal layer to form a seating surface layer; the seating surface layer has good heat conduction function, so that the toilet seat can realize quick heating function and the human body and the toilet seat have good comfort level; meanwhile, the seating surface layer is guaranteed to have a good insulation function, so that the toilet seat has higher safety performance, and the situation of electric leakage or electric shock is avoided.
6. The mixed solution of the methyl methacrylate prepolymer contains a polyfunctional acrylate monomer and a long-chain acrylate monomer, wherein the polyfunctional acrylate monomer is added, so that the polymethyl methacrylate formed on the surface of the metal layer after polymerization has a certain crosslinking degree, on one hand, the shrinkage rate of the polymethyl methacrylate is reduced, the shrinkage rate of the polymethyl methacrylate is matched with the shrinkage rate of the metal layer, and the defect that the sitting surface layer and the metal layer are cracked or layered due to frequent heating and cooling in the long-time use process of the toilet seat is avoided; on the other hand, the hardness and the wear resistance of the polymethyl methacrylate are improved; the addition of the long-chain acrylic ester monomer increases the toughness of polymethyl methacrylate after polymerization molding, and simultaneously reduces the influence caused by brittleness problem generated by methyl methacrylate prepolymer mixed solution in the casting process.
7. The pressurizing and pressure maintaining, short pressure releasing and exhausting and pressurizing and pressure maintaining procedures during vacuum pouring can ensure that the methyl methacrylate prepolymer mixed solution can fully infiltrate into micro-scale or nano-scale holes on the surface of the metal layer, improve the bonding stability of the seating surface layer and the metal layer and improve the surface quality of products.
8. After the surface of the metal layer is treated by silane containing alkoxy ester functional groups, an organosilane film containing Me-O-Si structure is formed, so that polymethyl methacrylate has higher bonding strength on the metal layer.
9. The heating component is directly glued on the surface of the metal layer, heat transfer is not needed through other mediums, the heat transfer speed is higher, and the heat loss is reduced.
10. The seat ring upper plate and the seat ring bottom plate are formed by combining a welding process, the welding mode is a welding joint mode between nonmetallic materials, the mode of adopting adhesive joint in the conventional quick-heating seat ring structure is replaced, the problems of production time increase and cost increase caused by glue solidification are solved, the situation of joint failure in long-term use in a humid environment is avoided, the joint of the seat ring upper plate and the seat ring bottom plate is difficult to fail after long-term use, the service life is long, moisture is prevented from entering, electric leakage is avoided, and the safety is high; the joint process of the seat ring upper plate and the seat ring bottom plate is simpler, the feasibility is high, and the manufactured toilet seat ring has higher safety performance.
11. The heat insulation material is glued on the lower surface of the heating component, so that the heat generated by the heating component is effectively prevented from being dissipated, and the heat insulation function is realized; through gluing heat reflection material at the lower surface of insulating material, guarantee that the seat circle upper plate has certain heat reflection ability, prevent heat transfer down, further avoid heat to scatter and disappear, simultaneously, played certain water and electricity separation effect to the seat circle upper plate, improved the security.
12. The toilet seat with the joint of the seat upper plate and the seat bottom plate manufactured by the production method of the toilet seat has better rapid heating and temperature rising capability, and the heat conduction speed of the toilet seat is high; the seating surface layer of the heat-conducting insulating material has good heat-conducting insulating capability, and is firmly bonded with the metal layer and is not easy to fall off; when a user uses the multifunctional sitting surface layer, the sitting surface layer has more comfortable contact feeling with the skin and high safety performance; the cavity in the toilet seat is favorable for preserving the temperature of the toilet seat, reduces heat loss, simultaneously avoids the influence of air with lower external temperature to a certain extent, consumes less power and saves energy.
13. The thickness of the supporting part of the sitting surface layer is larger than that of the sitting part, so that the bearing capacity of the sitting surface layer is improved.
14. The thickness of the sitting surface layer and the metal layer is smaller, so that the rapid heating and heat conduction functions of the sitting surface layer and the metal layer are effectively guaranteed, the electricity consumption is reduced, and the energy is saved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments below are briefly introduced, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic cross-sectional view of a toilet seat according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the structure of the upper surface of a metal layer according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a structure of a lower surface of a metal layer according to an embodiment of the present invention;
FIG. 4 is a schematic diagram showing a structure of a lower surface of a metal layer according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of a metal layer according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a cross-sectional structure of a metal layer according to an embodiment of the present invention;
FIG. 7 is a schematic view showing the heat transfer effect of the upper plate of the seat ring according to the embodiment of the present invention.
The main reference numerals illustrate:
the seat ring upper plate 10 includes: the sitting surface layer 1 comprises a sitting portion 11 and a supporting portion 12; the metal layer 2 comprises a diversion trench 21, a micro-scale or nano-scale hole 22, a notch 23 and a reinforcing rib 24; a heating member 3; a heat insulating layer 4; a heat reflection layer 5;
A race bottom plate 20; and a hollow portion 30.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are preferred embodiments of the invention and should not be taken as excluding other embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without creative efforts, are within the protection scope of the present invention.
In the claims, specification and drawings hereof, unless explicitly defined otherwise, the terms "first," "second," or "third," etc. are used for distinguishing between different objects and not for describing a particular sequential order.
In the claims, specification and drawings of the present invention, unless explicitly defined otherwise, references to orientation or positional relationship such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", etc. are based on the orientation and positional relationship shown in the drawings and are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or element referred to must have a particular orientation or be constructed and operated in a particular orientation, nor should it be construed as limiting the particular scope of the invention.
In the claims, specification and drawings of the present invention, unless explicitly defined otherwise, the term "fixedly connected" or "fixedly connected" should be construed broadly, i.e. any connection between them without a displacement relationship or a relative rotation relationship, that is to say includes non-detachably fixedly connected, integrally connected and fixedly connected by other means or elements.
In the claims, specification and drawings of the present invention, the terms "comprising," having, "and variations thereof as used herein, are intended to be" including but not limited to.
Referring to fig. 1 to 7, fig. 1 to 6 show schematic structural views of the metal layer and the toilet seat according to the present invention; fig. 7 shows a schematic view of the heat transfer effect of the plate on the seat ring of the present invention. In the preparation method of the metal layer of the toilet seat, the metal material is stamped into the toilet seat shape through a stamping process, and the shapes of the upper surface and the lower surface of the metal material are cambered surfaces, so that the stamped metal layer 2 is ensured to be of a plate-shaped structure with an arc-shaped section; the upper surface of the metal material is stamped to form a diversion trench 21, the cross section of the diversion trench 21 is arc-shaped or square, preferably, the cross section of the diversion trench 21 is arc-shaped, so as to reduce stress concentration and improve the combination of the seating surface layer 1 and the metal layer 2, and in the embodiment, the setting of the diversion direction of the diversion trench 21 refers to the simulation result of the Moldflow software; the surface of the metal material on which the flow guide grooves 21 are formed is roughened by an acid etching or laser etching process to form micro-scale or nano-scale holes 22. The metal material is punched into a toilet seat ring shape, and the shape simulates the part structure of the human buttocks contacting the toilet seat ring, so that the material consumption can be reduced to the greatest extent, the cost can be saved, and the energy consumption can be reduced.
In the embodiment of the present invention, specifically, the stamping step further includes stamping the lower surface of the metal material with the reinforcing ribs 24, and stamping the side of the metal material with the diversion trench 21 with the notch 23, wherein the notch 23 is used for installing the seating detection sensor and the temperature sensor; it should be understood that since both the upper and lower surfaces of the metal material are cambered surfaces, the lower surface of the metal material is also its inner surface. Specifically, as shown in fig. 3 and 4, the reinforcing ribs 24 may be in a linear or curved strip structure, the reinforcing ribs 24 are curved or linear, the curved reinforcing ribs 24 divide the lower surface of the metal layer 2 into two independent areas, and the linear reinforcing ribs 24 are provided in a plurality and uniformly dispersed on the lower surface of the metal layer 2.
It should be noted that, the shape of the metal material used to make the metal layer of the toilet seat and the formation of the diversion trench 21, the notch 23 and the reinforcing rib 24 thereon are not limited to be realized by stamping, and it should be understood that the manufacturing of the metal layer 2 in the shape of the toilet seat by the processes of die casting, machining, etc. and the manufacturing of the diversion trench 21, the notch 23 and the reinforcing rib 24 on the surface of the metal layer 2 are all considered as equivalent processes of alternative stamping processes, and therefore, can be considered as falling within the technical solutions protected by the embodiments of the present invention.
In this embodiment, the metal material may be an aluminum plate, a magnesium plate, a copper plate, an iron plate, or the like, and preferably an aluminum plate; the micro-scale or nano-scale holes 22 on the surface of the metal layer 2 can be made by an acid etching process or a laser etching process, wherein the specific method for roughening the metal material by the acid etching process is as follows: carrying out surface cleaning treatment on the metal material, specifically adopting alkaline solution such as sodium hydroxide to carry out alkaline agent decontamination on the surface of the metal material, and removing protective oil, protective oil and the like on the surface of the metal material; after the oil removal is finished, the metal material is subjected to neutral water washing soaking treatment, drying treatment is carried out after soaking, and then acidic treatment is carried out. The acidic solution is controlled to etch the surface of the metal material and form micro-scale or nano-scale holes 22 by utilizing the principle that the metal material can be eroded by the acidic solution. It should be noted that, the holes made by the acid etching process are in a random form, and the holes made by the laser etching process can be in a pre-designed structural form, so that the laser etching can be controlled by a computer to form structures such as holes with openings smaller than the inner cavity or inclined holes with different inclinations on the surface of the metal layer 2, so that a mortise-tenon connection structure can be formed when the subsequent sitting surface layer 1 is combined with the metal layer 2, and the combination strength of the sitting surface layer 1 and the metal layer 2 is improved.
In an embodiment of the invention, a method for producing a toilet seat includes two embodiments:
example 1
The method specifically comprises the following steps:
step 1: preparing composite resin master batches for nano injection molding;
step 2: injecting composite resin master batch on one surface of the metal layer 2 on which the diversion trench 21 is formed through a nano injection molding process so as to form a sitting surface layer of the toilet seat; specifically, this step further includes incorporating a seating detection sensor and a temperature sensor within the slot 23, after which the seating detection sensor and temperature sensor are secured within the slot, and then performing the nano-injection molding operation.
Step 3: adhering the heating member 3 to the other side of the metal layer 2 to obtain a seat ring upper plate 10; the lower surface of the heating member 3 is glued with a heat insulating material, and the lower surface of the heat insulating material is glued with a heat reflecting material to form a heat insulating layer 4 and a heat reflecting layer 5 of the toilet seat respectively, so that the seat upper plate 10 has certain heat insulating and heat reflecting functions.
Step 4: one or more of PBT, PPS, PA, PPA, ABS, PMMA and polyurethane resin are made into a seat ring bottom plate 20 with the shape matched with the seat ring upper plate 10 by adopting a rapid injection molding process;
Step 5: the seat ring upper plate 10 and the seat ring bottom plate 20 are jointed and formed through a welding process; preferably, the seating surface layer 1 on the seat ring upper plate 10 and the seat ring bottom plate 20 are welded together by a friction welding process, and in addition, a welding technique such as hot plate welding, ultrasonic welding, laser welding, hot air welding, infrared welding, etc. may be used.
In the embodiment, in the step 1 and the step 2, the composite resin master batch for nano injection molding specifically contains amino or ester group thermoplastic resin, heat-conducting insulating powder, reinforcing fibers, a toughening agent, a flame retardant and a processing aid, and various materials are mixed according to a certain proportion and then mixed and granulated by a double-screw extruder to prepare the master batch; in step 1, the heat-conducting insulating powder and the reinforcing fiber are subjected to surface treatment by adopting a coupling agent in advance.
The thermoplastic resin of amino or ester group can be one or a mixture of a plurality of PBT, PPS, PA, PPA, PMMA, and preferably, in the embodiment, the thermoplastic resin of amino or ester group is PBT, which has better hydrolysis resistance and aging resistance.
The heat-conducting and insulating powder adopts non-metal powder (including non-metal simple substances such as silicon powder, diamond powder and the like), oxide or nitride heat-conducting materials, such as one or more of aluminum oxide, aluminum nitride, magnesium oxide, zinc oxide, boron nitride and silicon carbide; preferably, alumina is used; the addition proportion of the heat-conducting insulating powder is proper, and if the addition proportion of the heat-conducting insulating powder is too low, the heat-conducting effect is low or even no heat-conducting effect exists; if the adding proportion is too high, the mixing property of the resin and the inorganic heat conduction insulating powder is poor, even in the process of the subsequent nano injection molding process, the composite resin material can not be effectively filled into micro-scale or nano-scale holes on the metal surface due to the reduction of the fluidity, so that the problems of weak combination of the seating surface layer 1 and the metal heat conduction layer 2 and the like are caused.
The reinforcing fiber has the functions of reinforcing and reducing the shrinkage rate of the resin, and adopts glass fiber, carbon fiber, aramid fiber, mineral fiber such as basalt fiber, UHMWPE fiber, PBO fiber, boron fiber, whisker fiber and the like, preferably glass fiber; the addition proportion of the reinforcing fiber is proper, if the addition proportion is too low, the reinforcing effect is very small, the effect of reducing the shrinkage rate of the resin is not achieved, and after the resin is compounded with the metal layer 2, the stress between the seating surface layer 1 and the metal layer 2 easily causes the cracking phenomenon; if the adding proportion is too high, the total content of inorganic filler (including the total content of heat-conducting insulating powder and reinforcing fiber) in the sitting surface layer 1 is too high, so that in the subsequent nano injection molding process, the composite resin material can not be effectively filled into micro-scale or nano-scale holes on the metal surface due to the reduction of fluidity, and the sitting surface layer 1 and the metal layer 2 are not firmly combined.
The coupling agent is used for treating the surface of the insulating heat-conducting powder and the reinforcing fiber, and can be silane coupling agent, preferably KH-550.
Processing aids include heat stabilizers, antioxidants, lubricants, and the like.
Preferably, before the composite resin master batch is injection molded on the surface of the metal plate by adopting a nano injection molding process, the method further comprises the steps of: immersing the surface of the metal layer 2 by adopting an amine-containing treating agent so as to form a special connecting layer in the micro-scale or nano-scale holes 22 of the metal layer 2, and drying the treated connecting layer; the special connecting layer can form compact joint with resin containing amine or ester structure, thereby obtaining resin-metal connecting structure with extremely strong binding force.
In the step 3, the heating component 3 can adopt a nano rare earth electrothermal heating film, an electrothermal wire heating film, a ceramic heating sheet, a PTC heating body, electrothermal paint, a metal electrothermal element, a mica heating sheet, a silica gel heating sheet and the like, and preferably adopts the nano rare earth electrothermal heating film; the heat insulation layer 4 can adopt aerogel composite heat insulation felt, PU foaming layer and the like, and preferably adopts aerogel composite heat insulation felt; the heat reflecting layer 5 may be aluminum foil glass fiber cloth or heat reflecting coating, preferably aluminum foil glass fiber cloth. When the heating member 3, the heat insulating layer 4 and the heat reflecting layer 5 are adhered to the surface of the metal layer 2, adhesion can be performed while avoiding the reinforcing ribs 24.
In step 4, a heat stabilizer, an antioxidant, a lubricant and the like are mixed in the matrix resin; preferably, the material of the seating surface layer 1 is the same as the material of the seat pan 20.
Example two
The method specifically comprises the following steps:
step 1: preparing a methyl methacrylate prepolymer mixed solution;
step 2: polymerizing and forming a methyl methacrylate prepolymer mixed solution on one surface of a metal layer 2, which is prepared in the preparation method of the metal layer of the toilet seat and is provided with a diversion trench 21, through a casting process so as to form a seating surface layer 1 of the toilet seat; specifically, this step further includes incorporating a seating detection sensor and a temperature sensor into the slot 23, and then performing the pouring operation after the seating detection sensor and the temperature sensor are fixed into the slot.
Step 3: adhering the heating member 3 to the other side of the metal layer 2 to obtain a seat ring upper plate 10; the step also comprises the steps of gluing the heat insulation material on the lower surface of the heating member 3, gluing the heat reflection material on the lower surface of the heat insulation material to respectively form the heat insulation layer 4 and the heat reflection layer 5 of the toilet seat, so that the seat upper plate 10 has certain heat insulation and heat reflection functions.
Step 4: one or more of PBT, PPS, PA, PPA, ABS, PMMA and polyurethane resin are made into a seat ring bottom plate 20 with the shape matched with the seat ring upper plate 10 by adopting a rapid injection molding process;
step 5: the seat ring upper plate 10 and the seat ring bottom plate 20 are jointed and formed through a welding process; preferably, the seating surface layer 1 on the seat ring upper plate 10 and the seat ring bottom plate 20 are welded together by a friction welding process, and in addition, a welding technique such as hot plate welding, ultrasonic welding, laser welding, hot air welding, infrared welding, etc. may be used.
It should be noted that the casting solution used for casting the upper surface of the metal layer of the toilet seat to form the sitting layer 1 is not limited to the mixed solution of methyl methacrylate prepolymer, and it should be understood that the casting solution formed by casting process with epoxy resin, liquid silica gel, polyurethane, etc. are all considered as materials capable of replacing the mixed solution of methyl methacrylate prepolymer, and thus can be considered as falling within the technical solutions protected by the embodiments of the present invention.
In the embodiment, in the step 1 and the step 2, the methyl methacrylate prepolymer mixed solution specifically comprises a methyl methacrylate prepolymer, a multifunctional acrylate monomer, a long-chain acrylic monomer, heat-conducting insulating powder, reinforcing fibers, an initiator and an auxiliary agent; in the step 1, heat-conducting insulating powder and reinforcing fibers are subjected to surface treatment by adopting a coupling agent in advance; the methyl methacrylate prepolymer is formed by preliminary polymerization of methyl methacrylate monomer under the action of an initiator. Preferably, a certain proportion of pigment may be added as needed in step 1.
Wherein the acrylic acid with multiple functional groups adopts three or more functional groups of acrylic esters such as trimethylolpropane triacrylate, pentaerythritol tetraacrylate, trimethylolpropane tetraacrylate, dipentaerythritol hexaacrylate and the like, preferably trimethylolpropane triacrylate, and the thermal expansion coefficient is 20 multiplied by 10 when the metal layer 2 is an aluminum plate due to the large difference between the thermal expansion coefficients of polymethyl methacrylate and the metal layer 2 -6 At a temperature of 73X 10, the thermal expansion coefficient of polymethyl methacrylate -7 Therefore, the addition of the multifunctional acrylic ester enables the polymethyl methacrylate after the mixed solution of the methyl methacrylate prepolymer is cast to have a certain crosslinking degree, reduces the shrinkage of the polymethyl methacrylate, enables the shrinkage to be matched with the shrinkage of the metal layer 2, prevents cracking, delamination and other phenomena caused by overlarge stress of the seating surface layer 1 and the metal layer 2 due to frequent heating and cooling in the use process, and simultaneously increases the hardness and the wear resistance of the seating surface layer 1.
The long-chain acrylic ester can be ethyl methacrylate, butyl methacrylate, octyl methacrylate, sunflower methacrylate, dodecyl methacrylate and the like, and is used for increasing the toughness of polymethyl methacrylate bodies during casting molding and reducing the influence of brittleness caused by crosslinking of polymethyl methacrylate.
The heat-conducting and insulating powder adopts non-metal powder (including non-metal simple substances such as silicon powder, diamond powder and the like), oxide or nitride heat-conducting materials, such as one or a mixture of more of aluminum oxide, magnesium oxide, zinc oxide, aluminum nitride, boron nitride and silicon carbide; preferably, alumina is used; wherein the adding proportion of the heat conducting and insulating powder is proper. The reinforcing fiber has the functions of reinforcing and reducing the shrinkage rate of the resin, and adopts glass fiber, carbon fiber, aramid fiber, mineral fiber such as basalt fiber, UHMWPE fiber, PBO fiber, boron fiber, whisker fiber and the like, preferably carbon fiber; the reinforcing fibers should be added in an appropriate ratio. The coupling agent is used for treating the surface of the insulating heat-conducting powder and the reinforcing fiber, and can be silane coupling agent, preferably KH-550. The initiator is an organic peroxide or azo compound, preferably azo compound.
In this embodiment, the method specifically includes the following steps when pouring is performed: stirring and vacuumizing the methyl methacrylate prepolymer mixed solution in a vacuum chamber; fixing the seating detection sensor and the temperature sensor in the notch 23 on the surface of the metal layer; spraying a proper amount of release agent on the surface of a casting mold, placing the mold in a casting vacuum chamber, fixing the metal layer 2 in the mold, tightly adsorbing the lower surface of the metal layer 2 on the mold through a magnetic attraction mechanism in the mold, and vacuumizing; slowly pouring the methyl methacrylate prepolymer mixed solution into a mold through a pouring pipeline until the pouring mold is filled, applying a certain temperature to polymerize the methyl methacrylate prepolymer mixed solution, and simultaneously pressurizing and maintaining the pressure, releasing the pressure for a short time, exhausting the air, pressurizing and maintaining the pressure on the mold; after the formation of methyl methacrylate, the product is removed by demolding, and the necessary steps such as deburring are performed.
When the mixed solution of methyl methacrylate prepolymer is slowly poured into a mold, bubbles need to be removed, and then a certain pressure is applied, wherein the pressure can be selected to be 1-10Mpa, so that the mixed solution of methyl methacrylate prepolymer slowly permeates into the micro-scale or nano-scale holes 22 on the surface of the metal layer 2.
Specifically, before vacuum casting, the method further comprises the step of treating the surface of the metal layer 2 on which the diversion trench 21 is formed by silane containing alkoxy ester functional groups, wherein the specific treatment mode is as follows: the metal layer 2 is subjected to alkaline degreasing, rinsed by clear water and fully infiltrated by water, and at the moment, the metal layer 2 is immediately infiltrated into the hydrolyzed silane treatment agent without being dried, and after being infiltrated for a period of time, an organosilane film containing a Me-O-Si structure can be formed, and the organosilane film can enable the polymethyl methacrylate to have higher bonding strength on the metal layer.
In this embodiment, in step 3, the materials of the heating member 3, the heat insulating layer 4 and the heat reflecting layer 5 and the bonding manner between the metal layer 2 or each layer are the same as in embodiment one.
In step 4, a heat stabilizer, an antioxidant, a lubricant and the like are mixed in the matrix resin; among these, polymethyl methacrylate is also optional, and preferably the material of the seating surface layer 1 is consistent with the material of the seat pan 20.
In the first and second embodiments, alternatively, the manufacture of the seat ring plate 10 may be achieved by: the nano injection molding or casting process is performed after the heating member 3 is attached to the lower surface of the metal layer 2, or the nano injection molding or casting process is performed after the heating member 3, the heat insulation layer 4 and the heat reflection layer 5 are attached to the lower surface of the metal layer 2 in sequence, and this embodiment has no influence on the nano injection molding process and the casting process and on the performance of the manufactured seat ring upper plate 10, and thus can be used as the process of the seat ring upper plate 10 in the embodiment of the present invention.
In an embodiment of the present invention, a toilet seat including a seat upper plate 10 and a seat bottom plate 20 manufactured in both embodiments of the above-described production method of a toilet seat, the seat upper plate 10 and the seat bottom plate 20 enclosing and forming a hollow portion 30 inside, it should be understood that the seat upper plate 10 and the seat bottom plate 20 in the toilet seat are welded as one body by the welding process in the above-described production method. Specifically, the seating surface layer 1 in the seat upper plate 10 includes a seat portion 11 and a support portion 12 on a side surface, which is connected to the seat bottom plate 20, the thickness of the support portion 12 being greater than that of the seat portion 11, wherein the thickness of the seat portion 11 is 0.1-2.5mm; the thickness of the supporting part 12 is 0.1-5mm; the thickness of the metal layer 2 is 0.1-5mm.
According to the embodiment, in the preparation process of the metal layer 2 on the toilet seat, the outer surface of the metal material is roughened to form micro-scale or nano-scale holes 22, so that the specific surface area of the metal material is increased, the metal material can form a stable and firm anchor bolt structure when being combined with resin or other heat-conducting insulating materials, and the resin or other heat-conducting insulating materials are ensured to have good stability and not to fall off easily; because the stress generated after the metal material is combined with the organic materials such as resin or other heat-conducting insulating materials is larger, the arrangement of the micro-scale or nano-scale holes also plays a role of dispersing the stress, so that the resin or other heat-conducting insulating materials are not easy to delaminate and separate after being combined with the metal material, the service life and the safety of the toilet seat are ensured, and the user experience is better; in order to ensure that the surface of the metal layer 2 does not leak and is injected when the metal layer 2 is injection molded, the surface of the metal material is provided with the guide grooves 21, and resin materials flow into and are uniformly distributed between the surface of the metal material and a mold along the guide grooves 21 when the metal layer 2 is injection molded, so that the problems of leaking, material shortage or uneven casting and the like possibly existing when the surface of the metal material with a large area is injection molded into a thin layer are solved, and meanwhile, the guide grooves 21 are arranged, so that the formation quantity of micro-scale or nano-scale holes 22 on the surface of the metal layer 2 is increased, and the specific surface area of the surface of the metal material is further increased.
Through forming the strengthening rib at the internal surface punching press of metal material, improve the holistic intensity of metal level 2 for when metal level 2 is being applied to the toilet seat, the toilet seat has better ability of bearing human gravity, can reduce the thickness of metal level 2 as far as, thereby guarantees that the toilet seat can reach better quick hot effect, has not only alleviateed the weight of toilet seat effectively, has reduced manufacturing cost simultaneously.
The notch 23 is punched in the metal material, so that the seating detection sensor and the stability sensor can be conveniently installed, the redundant space is not occupied, and the flatness of the metal surface is ensured.
The composite resin master batch is injected on the surface of the metal layer 2 through a nano injection molding process or the methyl methacrylate prepolymer mixed solution is polymerized on the surface of the metal layer 2 through a casting process, so that two materials form an anchor bolt structure on the surface of the metal layer 2 with micro-scale or nano-scale holes 22, the bonding between the sitting surface layer 1 and the metal layer 2 is compact and firm, compared with the traditional coating type sitting surface layer 1, after the composite resin master batch or the methyl methacrylate prepolymer mixed solution is combined or polymerized with the surface of the metal layer 2, the composite resin master batch or the methyl methacrylate prepolymer mixed solution is not easy to fall off after long-time use, the safety and the reliability of a user are ensured, and meanwhile, the closestool seat ring is effectively ensured to have longer service life due to the good hydrolysis resistance and ageing resistance of the composite resin for nano injection molding; moreover, the composite resin master batch and the metal layer 2 are adopted for compounding, so that the recovery rate is high, and the energy conservation and the environmental protection are realized; the seating surface layer 1 is bonded to the surface of the metal layer 2 through a nano injection molding process or a casting process, so that the seating surface layer 1 with extremely thin thickness can be manufactured, and the thickness of the seating surface layer 1 has the most obvious influence on the quick heating effect of the seat ring upper plate 10 in the factors of the thickness of the seating surface layer 1, the heat conductivity coefficient of the seating surface layer 1 and the power of the heating member 3, which have influence on the quick heating effect of the seat ring upper plate 10.
The composite resin master batch filled with heat-conducting insulating powder or methyl methacrylate prepolymer mixed solution is combined on the surface of the metal layer 2 to form a seating surface layer 1; the seating surface layer 1 has good heat conduction function, ensures that the toilet seat can realize quick heating function and has good comfort level with the toilet seat; meanwhile, the seating surface layer 1 is ensured to have a good insulating function, so that the toilet seat has higher safety performance, and the situation of electric leakage or electric shock is avoided.
The mixed solution of the methyl methacrylate prepolymer contains a polyfunctional acrylate monomer and a long-chain acrylate monomer, wherein the polyfunctional acrylate monomer is added, so that the polymethyl methacrylate formed on the surface of the metal layer 2 after polymerization has a certain crosslinking degree, on one hand, the shrinkage rate of the polymethyl methacrylate is reduced, the shrinkage rate of the polymethyl methacrylate is matched with the shrinkage rate of the metal layer, and the defect that the sitting surface layer 1 and the metal layer 2 crack or delaminate due to frequent heating and cooling in the long-time use process of the toilet seat is avoided; on the other hand, the hardness and the wear resistance of the polymethyl methacrylate are improved; the addition of the long-chain acrylic ester monomer increases the toughness of polymethyl methacrylate after polymerization molding, and simultaneously reduces the influence caused by brittleness problem generated by methyl methacrylate prepolymer mixed solution in the casting process.
And when the vacuum casting is performed, a certain pressure is applied to ensure that the methyl methacrylate prepolymer mixed solution can fully infiltrate into the micro-scale or nano-scale holes 22 on the surface of the metal layer 2, so that the bonding stability of the seating surface layer 1 and the metal layer 2 is improved.
After the surface of the metal layer 2 is treated by silane containing alkoxy ester functional groups, an organosilane film containing Me-O-Si structure is formed, so that polymethyl methacrylate has higher bonding strength on the metal layer 2.
The heating member 3 is directly glued on the surface of the metal layer 2, and heat transfer is not needed to be carried out through other mediums, so that the heat transfer speed is higher, and the heat loss is reduced.
The seat ring upper plate 10 and the seat ring bottom plate 20 are formed by combining a welding process, the welding mode is a welding joint mode between nonmetallic materials, the mode of adopting adhesive joint in the conventional quick-heating seat ring structure is replaced, the problems of production time increment and cost increment caused by glue solidification are solved, the occurrence of joint failure when the seat ring upper plate 10 and the seat ring bottom plate 20 are used in a humid environment for a long time is avoided, the joint of the seat ring upper plate 10 and the seat ring bottom plate 20 is not easy to fail after long-time use, the service life is long, moisture is prevented from entering, electric leakage is avoided, and the safety is high; the joining process of the seat plate 10 and the seat bottom plate 20 is simple and feasible, and the manufactured toilet seat has high safety.
The heat insulation material is glued on the lower surface of the heating component 3, so that the heat generated by the heating component 3 is effectively prevented from being dissipated, and the heat insulation function is realized; through gluing heat reflection material at the lower surface of insulating material, guarantee that seat circle upper plate 10 has certain heat reflection ability, prevent heat transfer down, further avoid heat to scatter and disappear, simultaneously, played certain water and electricity separation effect to seat circle upper plate 10, improved the security.
The toilet seat manufactured by the production method of the toilet seat has better rapid heating and temperature rising capability, and the heat conduction speed of the toilet seat is high; the seating surface layer 1 of the heat conduction insulating material has good heat conduction insulating capability, and is firmly bonded with the metal layer 2 and is not easy to fall off; when a user uses the sitting surface layer 1, the contact feeling between the sitting surface layer and the skin is more comfortable, and the safety performance is high; the hollow part 30 in the toilet seat is beneficial to preserving the temperature of the seat, reducing heat loss, avoiding the influence of air with lower external temperature to a certain extent, consuming less electricity and saving energy.
The thickness of the support portion 12 of the seating surface layer 1 is greater than the thickness of the seat portion 11, improving the load bearing capacity of the seating surface layer 1.
The thickness of the sitting surface layer 1 and the metal layer 2 are smaller, so that the rapid heating and heat conduction functions of the sitting surface layer 1 and the metal layer 2 are effectively ensured, the power consumption is reduced, and the energy is saved.
By combining the analysis, the technical scheme disclosed by the invention solves all technical problems listed in the specification and realizes corresponding technical effects.
The foregoing description of the embodiments and description is presented to illustrate the scope of the invention, but is not to be construed as limiting the scope of the invention. Modifications, equivalents, and other improvements to the embodiments of the invention or portions of the features disclosed herein, as may occur to persons skilled in the art upon use of the invention or the teachings of the embodiments, are intended to be included within the scope of the invention, as may be desired by persons skilled in the art from a logical analysis, reasoning, or limited testing, in combination with the common general knowledge and/or knowledge of the prior art.
Claims (13)
1. The preparation method of the toilet seat metal layer is characterized by comprising the following steps: stamping the metal material into a toilet seat ring shape through a stamping process, wherein the upper surface and the lower surface of the toilet seat ring are cambered surfaces, a diversion trench and a notch are formed on the upper surface of the metal material, and a reinforcing rib is formed on the lower surface of the metal layer; the notch is used for installing a seating detection sensor or a temperature sensor; roughening one surface of the metal material, on which the diversion trench is formed, through an acid etching or laser etching process to form a micro-scale or nano-scale hole; the side wall of the diversion trench is also provided with the hole;
The surface of the metal layer, which is provided with the diversion trench, is suitable for forming a seating surface layer of the toilet seat by injection molding or casting process.
2. The production method of the toilet seat ring is characterized by comprising the following steps of: the method comprises the following steps:
step 1: preparing composite resin master batches for nano injection molding;
step 2: the composite resin master batch is injection molded on one surface of the metal layer on which the diversion trench is formed, which is prepared in the preparation method of the metal layer of the toilet seat according to claim 1, by a nano injection molding process, so as to form the seating surface layer of the toilet seat.
3. The production method of the toilet seat ring is characterized by comprising the following steps of: the method comprises the following steps:
step 1: preparing a methyl methacrylate prepolymer mixed solution;
step 2: the mixed solution of methyl methacrylate prepolymer is polymerized and formed on one surface of the metal layer on which the diversion trench is formed, which is prepared in the preparation method of the metal layer of the toilet seat according to claim 1, by a casting process, so as to form the seating surface layer of the toilet seat.
4. A method of producing a toilet seat as claimed in claim 2, wherein: the composite resin master batch comprises thermoplastic resin containing amino or ester groups, heat-conducting insulating powder, reinforcing fibers, a toughening agent, a flame retardant and a processing aid; the step 1 comprises the following steps: pretreatment, namely treating the surfaces of the heat-conducting insulating powder and the reinforcing fibers by adopting a coupling agent.
5. A method of producing a toilet seat as claimed in claim 3, wherein: the methyl methacrylate prepolymer mixed solution is prepared by mixing methyl methacrylate prepolymer, multifunctional acrylate monomers, long-chain acrylate monomers, heat-conducting insulating powder, reinforcing fibers, an initiator and an auxiliary agent according to a certain proportion; the step 1 comprises the following steps: pretreatment, namely treating the surfaces of the heat-conducting insulating powder and the reinforcing fibers by adopting a coupling agent; prepolymerization methyl methacrylate monomer is initially polymerized into methyl methacrylate prepolymer under the action of an initiator.
6. A method of producing a toilet seat as claimed in claim 5, wherein: the step 2 comprises the following steps: stirring and vacuumizing the methyl methacrylate prepolymer mixed solution in a vacuum chamber; fixing the seating detection sensor and the temperature sensor in a notch on the surface of the metal layer; fixing the metal layer in a mold sprayed with a release agent and vacuumizing; the mixed solution of methyl methacrylate prepolymer is slowly poured into a mould, and pressure is applied at a certain temperature to polymerize the mixed solution.
7. A method of producing a toilet seat as claimed in claim 6, wherein: the step 2 further includes the steps of: pretreatment of metal surfaces: the surface of the metal layer, on which the diversion trench is formed, is treated by silane containing alkoxy ester functional groups to form an organosilane film.
8. A method of producing a toilet seat as claimed in any one of claims 2 to 7, wherein: the method also comprises the following steps:
step 3: adhering a heating component to the lower surface of the metal layer to prepare an upper plate of the seat ring;
step 4: one or more of PBT, PPS, PA, PPA, ABS, PMMA and polyurethane matrix resin are made into a seat ring bottom plate with the shape matched with the seat ring upper plate by adopting an injection molding process;
step 5: and the seat ring upper plate and the seat ring bottom plate are jointed and formed through a welding process.
9. A method of producing a toilet seat as claimed in claim 8, wherein: the step 3 further includes the steps of: and the lower surface of the heating component is glued with a heat insulating material, and the lower surface of the heat insulating material is glued with a heat reflecting material to respectively form a heat insulating layer and a heat reflecting layer of the seat ring upper plate.
10. A toilet seat, characterized by: comprising a seat upper plate and a seat bottom plate obtained by the method for producing a toilet seat according to claim 9; the seat ring upper plate and the seat ring bottom plate enclose and form a cavity inside.
11. A toilet seat as claimed in claim 10, wherein: the sitting surface layer comprises a sitting portion and a supporting portion which is positioned on the side face and connected with the seat ring bottom plate; the thickness of the supporting part is larger than that of the sitting part.
12. A toilet seat as claimed in claim 11, wherein: the thickness of the sitting portion is 0.1-2.5mm; the thickness of the supporting part is 0.1-5mm.
13. A toilet seat as claimed in claim 10, wherein: the thickness of the metal layer is 0.1-5mm.
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