Heating furnace

Abstract

The utility model discloses a heating furnace, and relates to the technical field of automobile part processing, the heating furnace comprises a furnace body, a heater assembly and a power supply, the heater assembly comprises a side wall heater, the side wall heater comprises a heater, the heater comprises a shell, an infrared generator and a heating wire, the furnace body comprises a mounting frame, an inner-layer framework assembly and an outer-layer framework assembly, the inner-layer framework assembly forms a mounting cavity communicated with the heating cavity, and emergent light of the infrared generator can be emitted to a mold located in the heating cavity. According to the technical scheme, the infrared heating technology is adopted, the infrared generator is used for emitting infrared rays, heat can be directly transmitted to the mold, loss of the heat in the transmission process is greatly reduced, efficient heat transmission is achieved, the energy utilization efficiency is improved, the consistency of the temperature of the whole mold is ensured, and the service life of the mold is prolonged. And the risk that operators are scalded and the risk that fire disasters are caused by igniting peripheral lubricating oil and other combustible materials are eliminated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile parts processing, especially relates to a heating furnace. BACKGROUND

[0002] At present, the existing automobile instrument panel production line mainly adopts the slush foaming instrument panel process, and the product is made, the skin is made by a slush machine, the resin skeleton is made by an injection molding machine, and the product is finally obtained by combining and injecting foaming, the surface of the product is soft, and the product has better appearance and touch than the relative hard plastic instrument panel.

[0003] The process of making the skin by the slush machine comprises the following steps: ①heating the mold to 220-250 DEG C; ②combining the mold with the raw material box, constantly turning, and the raw material is melted and formed on the mold; ③cooling the mold to 20-50 DEG C; ④moving the mold to the demolding station, and the operator completes demolding.

[0004] In the process of heating the slush mold, there are mainly two forms of electric heating furnace and gas heating furnace, the air in the furnace is heated to 400-500 DEG C, then the mold is sent to the oven for baking for a certain time, and finally the mold is heated to the predetermined temperature. However, the existing heating furnace has more heat loss in the use process, resulting in low heating efficiency. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a heating furnace, which aims to solve the problem of how to improve the heating efficiency of the heating furnace.

[0006] In order to achieve the above purpose, the utility model provides a heating furnace for heating the slush mold, which comprises a furnace body, a heater assembly and a power supply, the heater assembly comprises a side wall heater, the side wall heater comprises a heater, the heater comprises a shell, an infrared generator and a heating wire, the shell is connected with the furnace body, the infrared generator is connected with the shell, the heating wire is located in the interior of the infrared generator, the heating wire is electrically connected with the power supply, the furnace body comprises a mounting frame, an inner layer framework assembly and an outer layer framework assembly, the inner layer framework assembly and the outer layer framework assembly are connected with the mounting frame, the inner layer framework assembly and the mounting frame form a heating cavity, the inner layer framework assembly, the heater and the outer layer framework assembly are arranged in sequence in the direction away from the heating cavity; the inner layer framework assembly forms a mounting cavity communicating with the heating cavity, the heater is located in the mounting cavity, and the exit light of the infrared generator can exit to the mold located in the heating cavity.

[0007] In an embodiment, the inner frame assembly comprises a plurality of inner frames, the plurality of inner frames are arranged at intervals along the circumference of the heating cavity, the number of the mounting cavities is plural, the mounting cavities are formed between any two adjacent inner frames, the number of the side wall heaters is consistent with the number of the mounting cavities, the outer frame assembly comprises a plurality of outer frames, the number of the outer frames is consistent with and one-to-one corresponds to the number of the inner frames, and the outer frames are arranged in parallel with the inner frames.

[0008] In an embodiment, each of the side wall heaters comprises a plurality of heaters, the plurality of heaters are arranged in the mounting cavities in sequence along the axial direction of the heating cavity.

[0009] In an embodiment, the plurality of heaters are divided into first heaters, second heaters, third heaters and fourth heaters arranged in sequence along the axial direction of the heating cavity.

[0010] The extension length of the first heater along the axial direction of the heating cavity is defined as A, and there is 160mm≤A≤200mm.

[0011] And / or,

[0012] The extension length of the second heater along the axial direction of the heating cavity is defined as B, and there is 680mm≤B≤720mm.

[0013] And / or,

[0014] The extension length of the third heater along the axial direction of the heating cavity is defined as C, and there is 680mm≤C≤720mm.

[0015] And / or,

[0016] The extension length of the fourth heater along the axial direction of the heating cavity is defined as D, and there is 160mm≤D≤200mm.

[0017] In an embodiment, the heating furnace further comprises temperature controllers, the number of the temperature controllers is consistent with and one-to-one corresponds to the number of the heaters, and each heating wire is connected in parallel to the power supply through the corresponding temperature controller.

[0018] In an embodiment, the furnace body further comprises first reinforcing members and second reinforcing members, the number of the first reinforcing members is plural, the number of the second reinforcing members is consistent with and one-to-one corresponds to the number of the first reinforcing members, two ends of each first reinforcing member are connected to any two adjacent inner frames, and two ends of each second reinforcing member are connected to any two adjacent outer frames.

[0019] In an embodiment, the heater assembly further comprises an end face heater, the mounting frame comprises a first mounting plate and a second mounting plate, two ends of the inner layer framework assembly are connected with the first mounting plate and the second mounting plate respectively, two ends of the outer layer framework assembly are connected with the first mounting plate and the second mounting plate respectively, the end face heater comprises a fifth heater and a sixth heater, the fifth heater is connected with the first mounting plate, and the sixth heater is connected with the second mounting plate.

[0020] In an embodiment, the shell is detachably connected with the furnace body, and the infrared generator is detachably connected with the shell.

[0021] and / or,

[0022] The infrared generator comprises a quartz tube.

[0023] In an embodiment, the shell is provided with a containing groove for containing the infrared generator, the infrared generator is clamped with the groove wall of the containing groove, the infrared generator is provided with a through hole containing the heating wire, the edge of the shell is further provided with a flash, the flash is provided with a first mounting hole, the inner layer framework assembly is provided with a second mounting hole, and the heating furnace further comprises a bolt and a nut, the bolt passes through the first mounting hole and the second mounting hole and is threadedly connected with the nut, so that the flash is detachably connected with the shell.

[0024] In an embodiment, the groove wall of the containing groove is provided with a titanium dioxide coating.

[0025] In the embodiment of the utility model, the furnace body is the frame of the whole heating furnace, contains the mounting frame, the inner layer skeleton assembly and the outer layer skeleton assembly, the inner layer skeleton assembly and the outer layer skeleton assembly all are connected with the mounting frame, form a stable structure, guarantee the stability and durability of the heating furnace structure, prolong the service life of equipment, the power supply provides necessary power for the heating wire to start the heating process, the shell is connected with the inner layer skeleton assembly, provides a safe housing containing internal components, the infrared generator is connected with the shell, the heating wire is located inside the infrared generator and is electrically connected with the power supply, the infrared generator generates infrared radiation by heating the heating wire with current; The working principle of the heating furnace is: when the heating furnace runs, the power supply supplies power to the heating wire, the heating wire warms up and activates the infrared generator, so that it emits infrared rays, these infrared rays directly penetrate the air and reach the surface of the slush mold in the heating cavity, so as to achieve the purpose of rapid heating. The embodiment of the utility model uses infrared heating technology, emits infrared rays by using the infrared generator, so that the heat can be directly transmitted to the mold, skipping the medium of air, greatly reducing the loss of heat in the transmission process, realizing efficient heat transfer, shortening the heating process time by 3-5 seconds, not only improving the equipment productivity, but also specially adapting to the conditions of PVC long cycle production, meeting the flexible strategy demand of the company; Compared with the traditional electric heating or gas heating mode, the infrared heating technology improves the energy utilization efficiency and reduces the energy consumption, the actual measurement result shows that the existing heater heating power is 129.6kW, each heating furnace can save 1750kWh of electric energy per day, and the annual cumulative electric energy consumption can be saved by 446,000kWh, which is equivalent to saving about 312,000 yuan of electricity cost per year, effectively reducing the production cost; The infrared rays can more evenly cover the surface of the mold, including the difficult-to-reach areas such as the corners, ensuring the consistency of the temperature of the whole mold, solving the problem of uneven temperature in the traditional heating mode, reducing the product pinhole and other quality problems caused by temperature difference, reducing the skin pinhole rate of the slush mold from 6% to 0.3%, reducing the skin waste rate from 3% to 1.2%, reducing about 14 skin waste products per day, and reducing waste about 114,000 yuan per year, effectively reducing the waste rate and improving the product quality; Since the infrared heating does not need high-temperature hot air heat transfer, the temperature of the outer wall of the furnace body is reduced from 100-180 DEG C to 50-70 DEG C, basically eliminating the risk of scalding workers and the risk of fire caused by igniting surrounding lubricating oil and other combustible materials, enhancing the safety of the working environment. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0027] Figure 1 It is a structural schematic view of an embodiment of the heating furnace of the present application.

[0028] Figure 2 It is another perspective structural schematic view of an embodiment of the heating furnace of the present application.

[0029] Figure 3 It is a structural schematic view of an embodiment of the furnace body of the heating furnace of the present application.

[0030] Figure 4 It is a structural schematic view of an embodiment of the circuit of the heater assembly of the heating furnace of the present application.

[0031] Figure 5 It is a structural schematic view of an embodiment of the shell of the heating furnace of the present application.

[0032] Figure 6 It is another perspective structural schematic view of an embodiment of the shell of the heating furnace of the present application.

[0033] Explanation of the reference signs:

[0034] 100, heating furnace; 1, furnace body; 11, mounting frame; 111, first mounting plate; 112, second mounting plate; 12, inner layer framework assembly; 121, inner framework; 13, outer layer framework assembly; 131, outer framework; 14, heating cavity; 15, mounting cavity; 16, first reinforcing piece; 17, second reinforcing piece; 2, heater assembly; 21, side wall heater; 211, first heater; 2111, shell; 21111, accommodating groove; 21112, flash; 21112a, first mounting hole; 2112, infrared generator; 2113, heating wire; 212, second heater; 213, third heater; 214, fourth heater; 22, end face heater; 221, fifth heater; 222, sixth heater; 3, power supply.

[0035] The realization, functional features and advantages of the present application will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0037] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back), the directional indications are only used to explain the relative positional relationship, movement condition and the like between components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.

[0038] In addition, if the embodiments of the present application involve descriptions such as "first", "second" and the like, the descriptions of "first", "second" and the like are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one feature. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes include A scheme, or B scheme, or A and B schemes are satisfied at the same time. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0039] At present, the existing automobile instrument panel production line mainly adopts the slush foaming instrument panel process to manufacture the product, which needs to use a slush molding machine to manufacture a skin, an injection molding machine to manufacture a resin skeleton, and then to finally obtain the product by combining and injecting foaming. The product has soft surface, better appearance and touch than a hard plastic instrument panel.

[0040] The process of manufacturing the skin by the slush molding machine includes: ①heating the mold to 220-250 DEG C; ②combining the mold with the raw material box, constantly turning over, and the raw material is melted and formed on the mold; ③cooling the mold to 20-50 DEG C; ④moving the mold to the demolding station, and the operator completes demolding.

[0041] In the process of heating the mold by slush molding, there are mainly two forms of electric heating furnace and gas heating furnace, the air in the furnace is heated to 400-500 DEG C, and then the mold is sent into the furnace for baking for a certain time, so that the mold is finally heated to the predetermined temperature. However, the existing heating furnace has a lot of heat loss during use, resulting in low heating efficiency.

[0042] After the applicant's careful study, it is found that the existing heating mode of the slush mold has some significant problems, which affects the production efficiency, product quality and operation safety. First, the traditional heating furnace mainly relies on heat conduction and heat convection to transfer heat, and its thermal efficiency is only about 60%, a lot of heat energy is dissipated to the outside of the heating furnace with air when the furnace is opened, resulting in energy waste and cost increase. Secondly, due to the limitation of hot air heating mode, the center area of the mold is more likely to absorb heat than the corner part, causing a temperature gradient of "high center, low corner". This uneven heating effect can easily cause defects such as pinholes on the corners of the product, increasing the scrap rate. Finally, the high-temperature hot air heat transfer makes the outer wall temperature of the heating furnace high (100℃-180℃), which not only brings the risk of burns to the maintenance workers, but also may ignite the surrounding flammable materials such as lubricating oil or other combustible materials, thereby constituting a fire hazard.

[0043] The main purpose of the utility model is to provide a heating furnace to solve the problem of how to improve the heating efficiency of the heating furnace.

[0044] Please refer to Figures 1 to 4 In an embodiment of the utility model, the heating furnace 100 is used for heating the slush mold, and the heating furnace 100 comprises a furnace body 1, a heater assembly 2 and a power supply 3. The heater assembly 2 comprises a side wall heater 21, and the side wall heater 21 comprises a heater. The heater comprises a shell 2111, an infrared generator 2112 and a heating wire 2113. The shell 2111 is connected with the furnace body 1, the infrared generator 2112 is connected with the shell 2111, the heating wire 2113 is located in the interior of the infrared generator 2112, and the heating wire 2113 is electrically connected with the power supply 3. The furnace body 1 comprises a mounting frame 11, an inner layer framework assembly 12 and an outer layer framework assembly 13. The inner layer framework assembly 12 and the outer layer framework assembly 13 are both connected with the mounting frame 11. The inner layer framework assembly 12 and the mounting frame 11 enclose to form a heating cavity 14. The inner layer framework assembly 12, the heater and the outer layer framework assembly 13 are arranged in sequence in the direction away from the heating cavity 14. The inner layer framework assembly 12 forms a mounting cavity 15 communicating with the heating cavity 14. The heater is located in the mounting cavity 15, and the outgoing light of the infrared generator 2112 can be emitted to the mold located in the heating cavity 14.

[0045] In the embodiment of the utility model, furnace body 1 as the frame of whole heating furnace 100 contains mounting frame 11, inner layer framework assembly 12 and outer layer framework assembly 13, and inner layer framework assembly 12 and outer layer framework assembly 13 are all connected with mounting frame 11, form a stable structure, guarantee the stability and durability of heating furnace 100 structure, prolong the service life of equipment, power supply 3 provides necessary power for heating wire 2113 to start heating process, shell 2111 is connected with furnace body 1, provides a safe housing containing internal components, infrared generator 2112 is connected with shell 2111, heating wire 2113 is located inside infrared generator 2112, and is electrically connected with power supply 3, and the infrared generator 2112 is excited to produce infrared radiation by heating heating wire 2113 through current heating; The working principle of heating furnace 100 is: when heating furnace 100 runs, power supply 3 supplies power to heating wire 2113, heating wire 2113 warms up and activates infrared generator 2112, makes it emit infrared rays, these infrared rays directly penetrate air, reach the surface of the slush mold in heating cavity 14, to achieve the purpose of rapid heating.

[0046] The technical scheme of the utility model uses infrared heating technology, uses infrared generator 2112 to emit infrared rays, so that heat can be directly transmitted to the mold, skipping the medium of air, greatly reducing the loss of heat in the transmission process, realizing efficient heat transfer, shortening the heating process time by 3-5 seconds, not only improving the equipment productivity, but also specially adapting to the conditions of PVC long tact production, meeting the flexible strategy demand proposed by the company; Compared with traditional electric heating or gas heating mode, the infrared heating technology improves the energy utilization efficiency and reduces the energy consumption, the actual measurement result shows that the existing heater heating power is 129.6kW, each heating furnace 100 can save 1750kWh of electric energy per day, and the annual cumulative electric energy consumption can be saved by 446,000kWh, equivalent to saving about 312,000 yuan of electricity cost per year, effectively reducing the production cost; The infrared rays can more evenly cover the surface of the mold, including the difficult-to-reach areas such as corners, ensuring the consistency of the temperature of the entire mold, solving the problem of uneven temperature in the traditional heating mode, reducing the product pinhole and other quality problems caused by temperature difference, reducing the incidence of slush mold skin pinholes from 6% to 0.3%, reducing the skin waste rate from 3% to 1.2%, reducing about 14 skin waste products per day, and reducing waste about 114,000 yuan per year, effectively reducing the waste rate and improving the product quality; Since infrared heating does not require high-temperature hot air heating, the temperature of the outer wall of furnace body 1 is reduced from 100-180 DEG C to 50-70 DEG C, basically eliminating the risk of scalding workers and the risk of fire caused by igniting surrounding lubricating oil or other combustible materials, enhancing the safety of the working environment.

[0047] In the embodiment, the power supply 3 can be an internal power supply of the heater or an external power supply, and the embodiment is not limited in this regard.

[0048] Referring to Figure 1 and Figure 3 In an embodiment, the inner framework assembly 12 includes a plurality of inner frameworks 121, the plurality of inner frameworks 121 are arranged along the circumference of the heating cavity 14 at intervals, the number of mounting cavities 15 is a plurality, the mounting cavities 15 are formed between any two adjacent inner frameworks 121, the number of side wall heaters 21 is consistent with the number of mounting cavities 15 and is arranged one-to-one, the outer framework assembly 13 includes a plurality of outer frameworks 131, the number of outer frameworks 131 is consistent with the number of inner frameworks 121 and is arranged one-to-one, and the outer frameworks 131 are arranged in parallel with the inner frameworks 121. Specifically, the plurality of inner frameworks 121 are arranged along the circumference of the heating cavity 14 at intervals, which ensures the effective division of the internal space of the heating cavity 14, the number of side wall heaters 21 is consistent with the number of mounting cavities 15 and is arranged one-to-one, which maximizes the layout efficiency of the side wall heaters 21, so that the side wall heaters 21 can be arranged around the heating cavity 14, and infrared rays can be more uniformly irradiated to the surface of the mold, including the corners and other parts, thereby improving the uniformity of heating and helping to reduce the probability of pinholes and other quality problems on the surface of the product, thereby significantly reducing the scrap rate. The number of outer frameworks 131 is consistent with the number of inner frameworks 121 and is arranged one-to-one, and the outer frameworks 131 are arranged in parallel with the inner frameworks 121, forming a stable double-layer structure, which not only enhances the stability and durability of the furnace body 1 structure, but also facilitates the installation and removal of the side wall heaters 21, and is more conducive to maintenance and repair. In the embodiment, the specific number of side wall heaters 21 can be selected according to the specific size of the furnace body 1, and the embodiment is not limited in this regard.

[0049] Referring to Figure 1 and Figure 2 In an embodiment, each side wall heater 21 includes a plurality of heaters, the plurality of heaters are located in the mounting cavities 15, and the plurality of heaters are arranged in sequence along the axis of the heating cavity 14. Specifically, the plurality of heaters are arranged in sequence along the axis of the heating cavity 14, which can ensure that each part of the mold in the length direction can be uniformly heated, avoiding the temperature unevenness problem that may be caused by traditional single-point heating, so that the temperature gradient of the mold surface is smaller, which is helpful to produce products with more consistent quality, and the plurality of heaters can work simultaneously to achieve a faster heating speed, shorten the heating time, and improve the production efficiency. The plurality of heaters can share the total heating task, avoiding the situation of overloading operation of a single heater, which helps to prolong the service life of the heater and other components, thereby maintaining the stability of the entire system and reducing the possibility of failure.

[0050] Referring to Figure 2In an embodiment, the plurality of heaters are divided into a first heater 211, a second heater 212, a third heater 213 and a fourth heater 214 arranged in sequence along the axial direction of the heating cavity 14; define the extension length of the first heater 211 along the axial direction of the heating cavity 14 as A, then 160mm≤A≤200mm; and / or, define the extension length of the second heater 212 along the axial direction of the heating cavity 14 as B, then 680mm≤B≤720mm; and / or, define the extension length of the third heater 213 along the axial direction of the heating cavity 14 as C, then 680mm≤C≤720mm; and / or, define the extension length of the fourth heater 214 along the axial direction of the heating cavity 14 as D, then 160mm≤D≤200mm; specifically, by setting four heaters with different lengths, more accurate temperature control can be achieved according to the different parts of the mold, ensuring that each area in the length direction of the mold can obtain ideal heating effect, reducing temperature gradient, so as to achieve more uniform heating; by the shorter first heater 211 and the fourth heater 214, concentrated heat input can be provided in the corner area of the mold, quickly raising the temperature of these areas, and by the longer second heater 212 and the third heater 213, a larger area can be covered, ensuring that the main part of the entire mold is sufficiently and uniformly heated. In this embodiment, in order to facilitate production and manufacturing, the length of the first heater 211 can be the same as the length of the fourth heater 214, and the length of the second heater 212 can be the same as the length of the third heater 213.

[0051] Please refer to Figure 4In an embodiment, the heating furnace 100 further comprises temperature controllers (not shown in the figure), the number of which is consistent with the number of the heaters and is arranged one-to-one, each heating wire 2113 is connected in parallel with the power supply 3 through the corresponding temperature controller; Specifically, each heater is equipped with an independent temperature controller, and then connected in parallel into the 220V power supply 3, and then the temperature of each part of the mold can be adjusted individually according to the needs of different parts of the mold, so that each area can reach the ideal heating temperature, thereby making the temperature distribution of the entire mold surface more uniform, so that each batch of products can obtain consistent heating treatment, ensuring the consistency and stability of product quality, reducing the incidence of product surface defects, and improving the quality of finished products, for example, when the edge area needs to be continuously heated, the corresponding temperature controller can prolong the heating time of the first heater 211 and the fourth heater 214, so that the edge area of the mold meets the temperature requirement; and the temperature controller can monitor and adjust the working state of the corresponding heater in real time, accurately control the power output of each heater, more efficiently utilize electric energy, reduce unnecessary energy waste, and the temperature controller also has an overheating protection function, which automatically cuts off the power supply 3 once the temperature exceeds the set value, preventing equipment damage or safety accidents, reducing the operation risk caused by temperature fluctuations, and protecting the safe operation environment of the equipment.

[0052] Please refer to Figure 1 and Figure 3 In an embodiment, the furnace body 1 further comprises a first reinforcing member 16 and a second reinforcing member 17, the number of the first reinforcing member 16 is multiple, the number of the second reinforcing member 17 is consistent with the number of the first reinforcing member 16 and is arranged one-to-one, and the two ends of each first reinforcing member 16 are respectively connected with any two adjacent inner skeletons 121, and the two ends of each second reinforcing member 17 are respectively connected with any two adjacent outer skeletons 131; Specifically, the first reinforcing member 16 and the second reinforcing member 17 are connected with the adjacent inner skeleton 121 and the outer skeleton 131 respectively, forming a more solid frame structure, which significantly enhances the mechanical strength of the entire furnace body 1, thereby effectively resisting the structural deformation caused by high temperature, gravity and other factors, ensuring the stability and reliability of the heating furnace 100 in long-time operation, reducing the safety hazards caused by the instability of the furnace body 1, such as tilting and collapsing, and protecting the safety of the operators. In the present embodiment, the third reinforcing member and the fourth reinforcing member are in a flat plate structure, and the second heater 212 and the third heater 213 are respectively arranged on the two sides of the first reinforcing member 16 in the axial direction of the heater, thereby ensuring that each part of the mold in the length direction can be uniformly heated.

[0053] According to an embodiment of the present application, the third reinforcing member and the fourth reinforcing member are in an arc structure, and the third reinforcing member and the fourth reinforcing member abut, thereby ensuring that each part of the mold in the length direction can be uniformly heated.

[0054] Please refer to Figures 1 to 3 In an embodiment, the heater assembly 2 further comprises an end face heater 22, the mounting frame 11 comprises a first mounting plate 111 and a second mounting plate 112, the two ends of the inner framework assembly 12 are connected with the first mounting plate 111 and the second mounting plate 112 respectively, the two ends of the outer framework assembly 13 are connected with the first mounting plate 111 and the second mounting plate 112 respectively, the end face heater 22 comprises a fifth heater 221 and a sixth heater 222, the fifth heater 221 is connected with the first mounting plate 111, and the sixth heater 222 is connected with the second mounting plate 112; specifically, the first mounting plate 111 and the second mounting plate 112 not only serve as the fixing points of the fifth heater 221 and the sixth heater 222, but also provide additional mechanical support for the entire furnace body 1, enhancing the stability and durability of the structure, and the fifth heater 221 and the sixth heater 222 ensure that both ends of the mold can also be fully heated, solving the problem of insufficient end face heating in traditional heating methods, so that the entire mold can obtain uniform heat input from the side and the end, reducing the temperature gradient, improving the uniformity of heating, so that each batch of products can obtain consistent heating treatment, significantly reducing the pinholes and other defects of the products, reducing the scrap rate, and ensuring the consistency and stability of the product quality. In this embodiment, for the convenience of production and manufacturing, the lengths of the fifth heater 221 and the sixth heater 222 can be the same as those of the first heater 211 and the fourth heater 214, or the same as those of the second heater 212 and the third heater 213, which is not limited in this embodiment, and the fourth heater 214 and the fifth heater 221 are also equipped with independent temperature controllers, which can be individually adjusted according to the needs of different parts of the mold, so as to ensure that each area can reach the ideal heating temperature; and in this embodiment, the structures of the first heater 211, the second heater 212, the third heater 213, the fourth heater 214, the fifth heater 221 and the sixth heater 222 are the same.

[0055] In an embodiment, the shell 2111 is detachably connected with the furnace body 1, and the infrared generator 2112 is detachably connected with the shell 2111; and / or, the infrared generator 2112 comprises a quartz tube; specifically, the shell 2111 is detachably connected with the furnace body 1, and the infrared generator 2112 is detachably connected with the shell 2111, so that the heater can be conveniently detached from the furnace body 1, facilitating inspection, cleaning or maintenance, reducing downtime, if the infrared generator 2112 or the shell 2111 is damaged, the corresponding module can be directly replaced, without the need to replace the entire heater assembly 2, reducing maintenance costs, and the detachable design also allows quick adjustment of the configuration of the heater according to different production needs or mold specifications, enhancing the versatility and adaptability of the heating furnace 100; the infrared heating technology is a method of using infrared radiation elements to emit infrared rays that are absorbed by the material to directly convert into heat energy to achieve the purpose of heating and drying, the essence is the radiation heat transfer process of infrared rays, infrared rays as an electromagnetic wave have a certain penetration, can transfer energy by radiation, after the material absorbs the radiation energy of infrared rays, the radiation energy is completely converted into the rotational energy of the material molecules or the rotational energy of the molecules is changed, and the vibration spectrum can increase the amplitude of the vibration or rotation of the material molecules, thereby intensifying the internal vibration, since the movement of electrons and the vibration of molecules is extremely fast, the vibration and collision of the crystal lattice and bond group between materials is fast, and the friction generates heat quickly, so the material has a faster heating speed when using infrared heating, especially when the radiation frequency of infrared rays is consistent with the inherent frequency of the material molecules, a phenomenon similar to resonance occurs, so the movement of the material molecules inside is more intense, and the temperature rises faster, thereby achieving the purpose of rapid heating, in this embodiment, the material of the slush mold is nickel, the infrared absorption peak of nickel is 1um-2.5um, according to the material absorption characteristics of the heated object, in the existing infrared heating technology, the wavelength of the quartz tube is 0.76um-2um, therefore, the quartz tube is selected as the infrared generator 2112, the quartz tube can generate efficient infrared radiation, ensuring that heat can be quickly and uniformly transmitted to the surface of the nickel mold.

[0056] Please refer to Figure 5 and Figure 6In an embodiment, the shell 2111 is provided with a containing groove 21111 for accommodating the infrared generator 2112, the infrared generator 2112 is in clamping fit with the groove wall of the containing groove 21111, the infrared generator 2112 is provided with a through hole (not shown in the figure) for accommodating the heating wire 2113, the edge of the shell 2111 is further provided with a flash 21112, the flash 21112 is provided with a first mounting hole 21112a, the inner layer framework assembly 12 is provided with a second mounting hole (not shown in the figure), the heating furnace 100 further comprises a bolt (not shown in the figure) and a nut (not shown in the figure), the bolt passes through the first mounting hole 21112a and the second mounting hole and is in threaded fit with the nut, so that the flash 21112 is detachably connected with the shell 2111; specifically, the clamping fit and the bolt connection design makes the installation process of the heater more simple and clear, facilitates on-site assembly and debugging, can ensure the installation stability of the infrared generator 2112 in the shell 2111, avoids loosening or falling off caused by vibration or other factors, also facilitates inspection, cleaning or maintenance, reduces downtime, through the accurate alignment of the first mounting hole 21112a and the second mounting hole, it is ensured that each heater can be accurately installed in place, the stability of the overall structure is improved, if a certain infrared generator 2112 or shell 2111 is damaged, the corresponding module can be directly replaced, without the need to replace the entire heater, thereby reducing the maintenance cost.

[0057] According to an embodiment of the present application, the infrared generator 2112 and the groove wall of the containing groove 21111 can be detachably connected through a hook, and the shell 2111 and the inner layer framework assembly 12 can be detachably connected through a buckle, thereby facilitating installation and disassembly.

[0058] According to another embodiment of the present application, the shell 2111 and the outer layer framework assembly 13 are detachably connected, thereby providing a safe shell for accommodating internal components.

[0059] In an embodiment, the groove wall of the containing groove 21111 is provided with a titanium dioxide coating (not shown in the figure); specifically, the titanium dioxide coating has high infrared reflectivity, can effectively reflect infrared radiation, reduces the loss of heat in the containing groove 21111, so that more heat can be directly transmitted to the mold, further improves the heating efficiency, at the same time, also optimizes the heating path, which is helpful to improve product quality and production efficiency.

[0060] The above-mentioned is only an exemplary embodiment of the present application, and does not limit the patent range of the present application, any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection range of the present application.

Claims

1. A heating furnace for heating a slush mold, characterized by comprising: The heating furnace comprises a furnace body, a heater assembly and a power supply, the heater assembly comprises a side wall heater, the side wall heater comprises a heater, the heater comprises a shell, an infrared generator and a heating wire, the shell is connected with the furnace body, the infrared generator is connected with the shell, the heating wire is located inside the infrared generator, the heating wire is electrically connected with the power supply, the furnace body comprises a mounting frame, an inner layer framework assembly and an outer layer framework assembly, the inner layer framework assembly and the outer layer framework assembly are both connected with the mounting frame, the inner layer framework assembly and the mounting frame form a heating cavity, and the inner layer framework assembly, the heater and the outer layer framework assembly are sequentially arranged in a direction away from the heating cavity; the inner layer framework assembly forms a mounting cavity communicating with the heating cavity, the heater is located in the mounting cavity, and the emitted light of the infrared generator can be emitted to the mold located in the heating cavity.

2. The furnace of claim 1, wherein The inner layer framework assembly comprises a plurality of inner frameworks, the plurality of inner frameworks are arranged in a circumferential direction of the heating cavity, the number of the mounting cavities is a plurality, the mounting cavities are formed between any two adjacent inner frameworks, the number of the side wall heaters is consistent with the number of the mounting cavities and is arranged in one-to-one correspondence, the outer layer framework assembly comprises a plurality of outer frameworks, the number of the outer frameworks is consistent with the number of the inner frameworks and is arranged in one-to-one correspondence, and the outer frameworks are arranged in parallel with the inner frameworks.

3. The furnace of claim 2, wherein Each of the side wall heaters comprises a plurality of heaters, the plurality of heaters are located in the mounting cavities, and the plurality of heaters are sequentially arranged in an axial direction of the heating cavity.

4. The furnace of claim 3 wherein, The plurality of heaters are divided into a first heater, a second heater, a third heater and a fourth heater sequentially arranged in the axial direction of the heating cavity. The extension length of the first heater in the axial direction of the heating cavity is defined as A, and 160mm≤A≤200mm. And / or, The extension length of the second heater in the axial direction of the heating cavity is defined as B, and 680mm≤B≤720mm. And / or, The extension length of the third heater in the axial direction of the heating cavity is defined as C, and 680mm≤C≤720mm. And / or, The extension length of the fourth heater in the axial direction of the heating cavity is defined as D, and 160mm≤D≤200mm.

5. The furnace of claim 4 wherein, The heating furnace further comprises a temperature controller, the number of the temperature controllers is consistent with the number of the heaters and is arranged in one-to-one correspondence, and each heating wire is connected in parallel with the power supply through a corresponding temperature controller.

6. The furnace as claimed in claim 2, wherein, The furnace body further comprises a first reinforcing member and a second reinforcing member, the number of the first reinforcing members is a plurality, the number of the second reinforcing members is consistent with the number of the first reinforcing members and is arranged in one-to-one correspondence, both ends of each first reinforcing member are connected with any two adjacent inner frameworks, and both ends of each second reinforcing member are connected with any two adjacent outer frameworks.

7. The furnace of any one of claims 1 to 6, wherein The heater assembly further comprises an end face heater, the mounting frame comprises a first mounting plate and a second mounting plate, two ends of the inner layer framework assembly are connected with the first mounting plate and the second mounting plate respectively, two ends of the outer layer framework assembly are connected with the first mounting plate and the second mounting plate respectively, the end face heater comprises a fifth heater and a sixth heater, the fifth heater is connected with the first mounting plate, and the sixth heater is connected with the second mounting plate.

8. The furnace of any one of claims 1 to 6, wherein, The shell is detachably connected with the furnace body, and the infrared generator is detachably connected with the shell. And / or, The infrared generator comprises a quartz tube.

9. The furnace of claim 8 wherein, The shell is provided with a containing groove for containing the infrared generator, the infrared generator is clamped with the groove wall of the containing groove, the infrared generator is provided with a through hole containing the heating wire, the edge of the shell is further provided with a flash, the flash is provided with a first mounting hole, the inner layer framework assembly is provided with a second mounting hole, and the heating furnace further comprises a bolt and a nut, the bolt passes through the first mounting hole and the second mounting hole and is threadedly connected with the nut, so that the flash is detachably connected with the shell.

10. The furnace of claim 9 wherein, The groove wall of the containing groove is provided with a titanium dioxide coating.

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