TW201831412A - Airtight chamber for air-tight continuous thermoforming device by which oxygen released from a thermal insulation layer during heating can be effectively prevented - Google Patents

Abstract

The present invention relates to an air-tight chamber for an air-tight continuous thermoforming device, which is applied to a temperature rising zone and a high temperature forming zone in a continuous forming device for thermoformed products, which is mainly to provide at least one layer of thermal insulation layer in the air-tight chamber of the temperature rising zone and the high temperature forming zone in the airtight continuous thermoforming device, a thermal field is formed in the center of the thermal insulation layer, a reflecting plate is disposed on the outer edge of the thermal insulation layer, and an air layer is provided between the reflecting plate and the airtight chamber, so that the temperature in the thermal field is more uniform, and the heat loss can be reduced, thereby achieving the effect of uniform temperature and energy conservation. The thermal insulation layer is composed of graphite, by which oxygen released from the thermal insulation layer during heating can be effectively prevented, and erosion of components such as molds due to oxidation can be avoided.

Description

 Airtight chamber of gas-tight continuous hot press forming device  

The invention is particularly directed to a new designer of a gas-tight cavity for a gas-tight continuous atmosphere sintering and molding device for a hot-pressed product, in addition to effectively preventing the release of oxygen from the heat-dissipating layer during heating, and eliminating the loss of oxidation loss of components such as a mold, and the like. It has a more uniform temperature in the thermal field and reduces heat loss in the thermal field to achieve energy saving.

Press, hot press forming is a method of processing polymer materials, mainly by placing a material with a certain thickness in a mold, heating the mold or the environment, softening the material to cover the surface of the mold, and then pressing the machine through the cooling stage. After curing, a hot formed product can be obtained.

For hot-pressed materials, for example, glass has high light transmission characteristics, so display devices (such as mobile phones, watches and other electronic products) are selected as the outer casing of the window. It can be seen that the surface of the handheld electronic product is usually provided with a glass casing to protect the display module inside the product. At present, most of the glass casings are in the shape of a flat plate, so seams are formed on the upper surface of the electronic product. Furthermore, since the peripheral portion of the electronic product must retain a certain width of the mechanism portion for holding the flat glass, the top surface of the electronic product cannot be fully utilized. Therefore, three-dimensional or curved glass has gradually been applied to the glass casing of electronic products.

A flat glass housing is easier to manufacture, and a glass housing having a three-dimensional shape is relatively difficult to manufacture. At present, there are generally two methods for manufacturing a glass case having a three-dimensional shape: the first one is to manufacture a plurality of flat glass units, and then form a glass case having a vertical shape by adhering the edges. The second type is: manufacturing a rectangular parallelepiped glass of a certain thickness, and then grinding it on the rectangular parallelepiped glass several times to form a three-dimensional shape having a plurality of sides. However, the above two methods are time consuming and labor intensive, and the production speed is very slow. In general, since the glass material is a flat plate, if a glass having a shape is to be produced, it is preferable to arrange a flat glass material between an upper mold and a lower mold, and then heat the upper mold. Pieces, lower molds and glass materials to soften the glass material. When the glass material is softened, the upper mold member and the lower mold member can be clamped, so that the upper mold member and the lower mold member together shape the shape of the glass material along a mold clamping direction, thereby producing a corresponding molded glass. . China Patent Publication No. M452174 "Molding Equipment for Molding Glass" (refer to the patent publication date of the announcement date of May 1, 2013), which comprises a female mold part, a first male mold part, and a second public A mold part, a support ram and a pressure bar. The first male mold member is disposed on the female mold member in an openable manner, and the second male mold member is disposed between the female mold member and the first male mold member. The support ejector is disposed on the female mold member, and the support ejector rod is used for pushing the second male mold member to support the second male mold member and the first male mold member A molded glass. The pressing rod is disposed on one side of the first male mold part, and the pressing rod is used for pressing down the first male mold part such that the first male mold part is opposite to the second male mold part The master mold member is moved to a clamping position to form the molded glass. However, it is still unable to meet the industry's need for continuous and rapid manufacturing of high-quality molded three-dimensional glass.

Applicant previously proposed the approved M536234 "Airtight Molded Stereoscopic Glass Continuous Forming Device", which is a new design for continuous molding of molded three-dimensional glass products. It is mainly composed of furnace body, closed type, and external body of furnace. The exchange system is provided at the end, and the airtight cavity is arranged inside the furnace body; the exchange system is arranged at the two ends of the furnace body, and the outer conveying lane is arranged between the two end exchange systems of the furnace body, and each exchange system comprises a side disposed on the side of the furnace body The airtight door and the airtight door outside the outer conveyor side form an airtight space between the inner airtight door and the outer airtight door, and a displacement device is provided to push the carrier plate into or out of the furnace body; the airtight cavity is provided Inside the furnace body, there is a gas-tight cavity, the airtight cavity has an inner conveying lane, and the inner conveying channel connects the airtight door in the two-end exchange system of the furnace body, and is provided with a sliding rail as a track for moving the carrier plate. The airtight chamber is airtight and introduces a shielding gas, and has a heating zone according to the process, a high temperature forming zone and a cooling zone, and at least one thermal insulation layer in the heating zone and the high temperature forming zone, and the central part of the thermal insulation layer Forming a thermal field with a visual process in the thermal field The heating element of the required temperature, the cooling zone has a cooling device, the high pressure forming zone is provided with a pressurizing system, the outer conveying channel is connected with the two-end exchange system of the furnace body, and the pressurizing system is mainly composed of a pressure cylinder, a pressurizing shaft and a pressurizing system. Column composition; the invention thus constituted, the flat glass to be formed is placed in the molding surface of the mold, the mold is placed on the carrier plate, the carrier plate enters the airtight chamber through the exchange system, preheats through the temperature rising zone, and the high temperature forming zone The high temperature makes the in-mold glass soften and is formed by the pressurization of the pressurized system. After cooling by the cooling zone, it is sent out of the furnace body through the exchange system, and then demolded, which can achieve continuous and high efficiency. High-quality molded mold for the effect of three-dimensional glass. However, due to the increasingly high softening temperature of glass today (especially the softening temperature of aluminum-containing glass is higher), in addition, hot press forming materials other than glass, such as hot pressing of metal, ceramic or cermet heterogeneous composite materials, Since the temperature requirements of the airtight cavity are higher and more uniform, it is necessary to design a better design for the thermal field of the forming device. Furthermore, since the heat-resistant material in the temperature rising zone and the high-temperature molding zone is generally made of an oxide material, oxygen ions in the heat-resistant material are released during heating, and the components such as the mold in the three-dimensional glass continuous molding device are molded. All of them are made of metal or graphite, and the released oxygen ions will increase the oxygen content of the protective gas introduced into the continuous three-dimensional glass continuous forming device, so that the components such as the mold are degraded by the oxidation and their service life is lost. In response to this deficiency, a better design has been proposed to make the patent for continuous hot pressing forming equipment more perfect.

The inventor of the present invention, in view of the lack of conventional technology, has accumulated many years of experience in the design and manufacture of precision ceramics technology industrial products. After continuous research and improvement, the invention has been successfully developed and made public.

The main purpose of the present invention is to provide a "airtight chamber of a gas-tight continuous hot press forming apparatus" for use in a temperature rising zone and a high temperature forming zone in a continuous forming apparatus for a hot press forming product, which is mainly airtight. At least one layer of thermal insulation is disposed in the airtight cavity of the temperature rising zone and the high temperature forming zone in the continuous hot press forming device, and a heat field is formed in the center of the heat insulating layer, wherein the outer edge of the heat insulating layer is provided with a reflecting plate. The air layer between the reflector and the airtight cavity makes the temperature in the heat field more uniform, and can reduce the loss of heat, thereby achieving the effect of uniform temperature and energy saving.

The heat-insulating layer of the present invention is made of graphite, which can effectively avoid the release of oxygen from the heat-dissipating layer during heating, and eliminate the loss of oxidation loss of components such as a mold.

(1)‧‧‧ furnace body

(2) ‧ ‧ exchange system

(20) ‧ ‧ inner airtight door

(21) ‧ ‧ outside airtight doors

(22) ‧ ‧ airtight space

(23) ‧‧‧displacement device

(3) ‧ ‧ airtight chamber

(30) ‧ ‧ airtight cavity

(300) ‧ ‧ air layer

(31) ‧ ‧ inner conveyor

(32) ‧‧ ‧ warming zone

(33) ‧‧‧High temperature forming zone

(34) ‧‧‧Cooling area

(35) ‧‧‧ Thermal insulation

(350) ‧‧‧ Lower platen

(351)‧‧‧reflector

(36)‧‧‧Hot field

(37) ‧‧‧Heating elements

(38) ‧‧‧Cooling device

(39)‧‧‧Slide rails

(4) ‧‧‧Outer transport lanes

(5) ‧‧‧ Pressurized system

(50)‧‧‧Cylinder

(51) ‧‧‧Pressure shaft

(52) ‧ ‧ pressurized column

(53) ‧‧‧Cooling device

(6) ‧‧‧ Carrier Board

(7)‧‧‧Mold

(8)‧‧‧Support devices

(80)‧‧‧Support column

(81)‧‧‧ Lifting device

1 is a front cross-sectional view of an embodiment of the present invention; FIG. 2 is a cross-sectional view of an embodiment of the present invention; FIG. 3 is a cross-sectional view of a temperature rising region of an embodiment of the present invention; Area map.

In order to achieve the above-described technical means of the present invention, an embodiment will be described, and with reference to the drawings, the reviewer can obtain a better understanding of the structure, features and effects of the present invention.

The present invention is particularly directed to a new designer of a gas-tight cavity for a gas-tight continuous atmosphere sintering and molding apparatus for a hot-pressed product, and the thermoformed material of the present invention includes, but is not limited to, a glass, a metal, a ceramic or a cermet heterogeneous composite material. . The gas-tight continuous hot press forming apparatus used in the present invention, as shown in Figs. 1 and 2, mainly includes: a furnace body (1), which is a closed type, and an outer portion of the furnace body (1) is exchanged. System (2), inside the furnace body (1) is provided with a gas-tight chamber (3); the exchange system (2) is arranged at the two ends of the furnace body (1), and the furnace body (1) is connected between the two-end exchange system (2) There is an outer conveying path (4), and each exchange system (2) includes an inner airtight door (20) disposed on the side of the furnace body (1) and an airtight door (21) disposed outside the outer conveying path (4) side. , an airtight space (22) is formed between the inner airtight door (20) and the outer airtight door (21), and a displacement device (23) is provided to push the carrier plate (6) into or out of the furnace body (1); The dense cavity (3) is disposed inside the furnace body (1) and includes an airtight cavity (30). The airtight cavity (30) has an inner conveying path (31), and the inner conveying path (31) is coupled to the furnace body. (1) The inner airtight door (20) of the two-end exchange system (2) is provided with a slide rail (39) [please refer to FIG. 3 and FIG. 4] as a moving track of the carrier board (6), The airtight chamber (3) is airtight and is supplied with a protective gas [generally an inert gas such as nitrogen; a device for providing a protective gas is a conventional technique, not much rumor], and is classified according to the process. The heating zone (32), the high temperature forming zone (33) and the cooling zone (34), the heating zone (32) and the high temperature forming zone (33) are provided with at least one thermal insulation layer (35), and the thermal insulation layer (35) The central part forms a thermal field (36), and the heating field (37) is provided in the thermal field (36) according to the temperature required by the process program [temperature control device is a conventional technique, not much rumor], and the cooling zone (34) has a cooling device. (38) [Cooling device (38) is a conventional technology, not much rumor], high pressure forming zone (33) is equipped with pressurizing system (5); outer conveying channel (4), connecting furnace body (1) two-end switching system (2); Pressurization system (5), as shown in Fig. 4, the pressurizing system (5) is mainly composed of a pressure cylinder (50), a pressurizing shaft (51) and a pressurizing column (52); According to the invention, the hot-pressed product is placed in the molding surface of the mold (7), the mold (7) is placed on the carrier plate (6), and the carrier plate (6) enters the airtight chamber via the exchange system (2) (3) , preheating in the temperature rising zone (32) [avoiding the temperature change too fast damage], and the high temperature of the high temperature forming zone (33), so that the hot-pressed molding in the mold is softened, and pressurized by the pressurizing system (5) After molding, after cooling by the cooling zone (34), the furnace body is sent out through the exchange system (2) (1) External, and then demoulded.

Referring to FIG. 2, the present invention is provided on the exchange system (2) on both sides of the furnace body (1), and each exchange system (2) includes an inner airtight door (20) disposed on the side of the furnace body (1). And an airtight door (21) disposed outside the outer conveyor (4) side, and an airtight space (22) formed between the inner airtight door (20) and the outer airtight door (21), when the carrier plate (6) is Before being fed into the furnace body (1), the inner airtight door (20) and the outer airtight door (21) at the head end of the furnace body (1) are closed, and a vacuum is applied in the airtight space (22) and a shielding gas is introduced thereto. After the same environment as in the airtight chamber (3) [the vacuum process will remove the air (especially oxygen) and impurities from the mold (7)], and the airtight door (20) in the furnace side opens. Push the carrier plate (6) into the airtight chamber (3). Before the carrier plate (6) is sent out of the airtight chamber (3), the inner airtight door (20) and the outer airtight door at the tail end of the furnace body ( 21) is closed, and the airtight space (22) has been evacuated and introduced into the same environment as the airtight chamber (3), and the airtight door (20) in the furnace side is opened to open the carrier (6) Pushed into the airtight space (22), so as to avoid mixing the air outside the furnace in the airtight chamber (3), thereby improving the molding quality of the hot-pressed product.

The airtight chamber of the hermetic continuous hot press forming device provided by the present invention is applied to a temperature rising zone and a high temperature forming zone in a continuous forming device of a hot press forming product, as shown in Figs. 3 and 4, Mainly in the air-heating zone of the gas-tight continuous hot press forming device and the airtight cavity (3) of the high temperature forming zone are provided with at least one thermal insulation layer (35), and the thermal field (35) forms a thermal field in the center (36). The outer edge of the thermal insulation layer (35) is provided with a reflecting plate (351), and an air layer (300) is provided between the reflecting plate (351) and the airtight cavity (30), so that the temperature in the thermal field (36) can be further increased. Uniform, and can reduce the loss of heat, and thus achieve the effect of uniform temperature and energy saving.

The heat-insulating layer (35) of the present invention is made of graphite, which can effectively prevent the heat-dissipating layer (35) from releasing oxygen during heating, and eliminating the loss of oxidation loss of components such as the mold (7).

In summary, the "airtight cavity of the gas-tight continuous hot press forming device" disclosed in the present invention is unprecedented, and has not been seen in publications disclosed at home and abroad, and has a novel patent requirement, and The invention can indeed eliminate the lack of conventional technology, and achieve the design purpose, and has fully complied with the patent requirements, and filed an application according to law. Please ask the reviewing committee to give a review and give the patent in this case.

However, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and the equivalent structural changes made by the present invention and the scope of the patent application are known to those skilled in the art. It is intended to be included in the scope of the patent of the present invention.

Claims (2)

 The airtight cavity of the gas-tight continuous hot press forming device is mainly provided with at least one thermal insulation layer in the airtight cavity of the air-cooling continuous hot press forming device and the airtight cavity of the high temperature forming zone, and the central part of the thermal break layer A thermal field is formed, and a reflector is disposed on the outer edge of the thermal insulation layer, and an air layer is disposed between the reflector and the airtight cavity.    The airtight chamber of the hermetic continuous hot press forming apparatus according to claim 1, wherein the heat insulating layer is composed of graphite.