TWI685472B - Pressurizing device of airtight continuous hot press forming device - Google Patents

Abstract

The present invention relates to a pressurizing device, especially an airtight continuous hot press forming device suitable for molding three-dimensional products. The pressurizing device of the present invention corresponds to a set of hot press molds opposite to each other, and each set has a press unit of 4 units The pressure assembly of each unit includes a servo motor, a pressure control device is connected to the lower end of the servo motor, a water-cooled pressure shaft is connected below the pressure control device, and a pressure column is connected below the water-cooled pressure shaft. Set in the hot press forming area of the air-tight continuous hot press forming device, the aforementioned four-unit pressurizing assembly, four pressurizing columns are provided above the four corners of the hot-pressing mold, and each set of four units pressurizes Components, at the same speed and the same pressure, accurately press the four corners of the pressure surface above the hot pressing mold, so that the parts of the hot pressing element in the hot pressing mold are evenly stressed to avoid warping caused by uneven stress, Distortion and other missing.

Description

Pressure device of airtight continuous hot press forming device

The present invention belongs to the technical field of hot press forming devices, and is particularly suitable for the design of the pressurizing device structure of the airtight continuous hot press forming device for molding three-dimensional products. It has 4 units of pressurizing components per group at the same speed and the same speed. Pressure and the same positioning, precisely press the four corners of the pressure surface above the hot pressing mold, so that the parts of the hot pressing element in the hot pressing mold are evenly stressed, to avoid the lack of warpage and skew caused by uneven force, It can effectively greatly improve the yield of hot press forming.

Pressing, hot press forming is a processing method of polymer materials. It mainly puts materials with a certain thickness in the mold, and heats the mold or the environment to soften the material and cover the surface of the mold. Then it is pressed by the machine and passes through the cooling stage After curing, hot-pressed products can be obtained.

The material used for thermocompression molding is glass, for example. Because glass has a high light-transmitting property, display devices (such as mobile phones, watches, and other electronic products) often choose it as the outer casing of the window. Jun Visible is usually equipped with a glass case on the surface of the handheld electronic product to protect the display module inside the product. At present, most glass shells are in the shape of flat plates, so a seam will be formed on the upper surface of electronic products. Furthermore, since the periphery of the electronic product must retain a mechanism portion of a certain width to hold the flat glass, the top surface of the electronic product cannot be fully utilized. Therefore, three-dimensional or curved glass has been gradually applied to the glass casing of electronic products.

Flat glass shells are easier to manufacture, while glass shells with three-dimensional shapes are more difficult to manufacture. At present, there are usually two methods for manufacturing a glass case with a three-dimensional shape. The first method is to manufacture a multi-piece flat glass unit, and then form a glass case with a three-dimensional shape by pasting the edges. The second method is to manufacture a rectangular parallelepiped glass with a certain thickness, and then grind the rectangular parallelepiped glass multiple times to form a three-dimensional shape with multiple sides. However, both of the above methods are time-consuming and labor-intensive, and the production speed is very slow. Generally speaking, since the glass material is a flat plate, if you want to produce a shaped glass, the best way is to set the flat glass material between an upper mold and a lower mold, and then heat the upper mold Parts, lower modules and glass materials to soften the glass materials. When the above-mentioned glass material softens, the upper and lower molds can perform the mold clamping action, so that the upper mold and the lower mold together shape the shape of the glass material along a clamping direction, so as to produce the corresponding molded glass . China Patent Announcement No. M452174 “Molding equipment for manufacturing molded glass” (reference date on the patent announcement date of May 1, 2013), which includes a female mold part, a first male mold part, a second male mold part Mold parts, a support jack and a pressure bar. The first male mold part is arranged on the female mold part in an openable and closable manner, and the second male mold part is arranged between the female mold part and the first male mold part. The support jack is inserted through the female mold part, and the support jack is used to push against the second male mold part, thereby supporting the second male mold part and the first male mold part to clamp together Molded glass. The pressing bar is disposed on one side of the first male mold part, and the pressing bar is used to press down on the first male mold part so that the first male mold part is opposite to the second male mold part The female mold part is moved to a mold clamping position to form the molded glass.

The applicant previously proposed the approved M536234 "Airtight Molded Three-Dimensional Glass Continuous Forming Device", which is a brand-new design of a continuous forming device designed for molded three-dimensional glass products, which is mainly composed of the furnace body, which is a closed type, and the outside of the furnace body. There is an exchange system at the end, and a gas-tight cavity inside the furnace body; the exchange system is located at the two ends of the furnace body, and an external conveying path is provided between the two end exchange systems of the furnace body. Each exchange system includes an interior located on the side of the furnace body The airtight door and the airtight door located outside the outer conveying path 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; Inside the furnace body, there is an airtight cavity, which has an internal conveying channel, which is connected to the airtight door in the two-end exchange system of the furnace body, and is provided with a slide rail to serve as a track for the carrier board to move. The airtight chamber is airtight and introduces protective gas, and is divided into a heating zone according to the manufacturing process), a high-temperature forming zone and a cooling zone. The heating zone and the high-temperature forming zone are provided with at least one heat insulation layer, and the center of the heat insulation layer A thermal field is formed. The heating field is equipped with heating elements depending on the temperature required by the manufacturing process. The cooling zone is equipped with a cooling device. The high-pressure forming zone is equipped with a pressurization system; the external conveyor is connected to the two-end exchange system of the furnace body; It is mainly composed of a pressure cylinder, a pressure shaft and a pressure column; in the present invention thus constituted, the flat glass to be formed is placed in the molding surface of the mold, and the mold is placed on the carrier plate. The carrier plate enters the airtight cavity through the exchange system, The preheating of the heating zone and the high temperature of the high-temperature forming zone soften the glass in the mold and form by the pressurization of the pressurization system. After cooling by the cooling zone, it is sent out of the furnace body through the exchange system and then demolded. It can also achieve the effect of continuous, high efficiency and high quality molding and molding three-dimensional glass.

As mentioned above, the conventional pressure system is mainly composed of a pressure cylinder, a pressure shaft and a pressure column. Because the pressure cylinder cannot accurately control the speed, pressure intensity and precise positioning of the pressure column applied to the hot pressing mold The displacement distance, and the pressurizing system is set at the center of each group of hot-pressing dies, and a single pressing system is used to press the center of the relative hot-pressing dies. This can maintain the flatness of the molded three-dimensional glass when the size of the three-dimensional glass to be hot-pressed is small, but for the larger three-dimensional molded glass products (such as tablet computers, notebook computers and car... etc.), Because the pressure applied by the pressure system is concentrated in the center of the hot pressing mold, it is easy to cause unevenness such as warpage and skew at the four corners of the molded three-dimensional glass product, and the yield of the molded three-dimensional glass is extremely low. This is the biggest shortcoming in the current conventional technology. This deficiency is a problem that the industry urgently needs to overcome.

In view of the lack of conventional technology, the inventor of the present invention has accumulated many years of practical expertise in the design and manufacture of precision ceramic technology industrial products. After continuous research and improvement, the successful development of the present invention is finally made public.

The reason is that the main purpose of the present invention is to provide a "pressurizing device for an airtight continuous hot press forming device". The pressurizing device of the present invention corresponds to a set of hot press molds opposite to each other, and each set has a press unit of 4 units The pressure assembly of each unit includes a servo motor, a pressure control device is connected to the lower end of the servo motor, a water-cooled pressure shaft is connected below the pressure control device, and a pressure column is connected below the water-cooled pressure shaft. It is set in the hot press forming area of the air-tight continuous hot press forming device. The hot press forming area includes a water-cooled air-tight hearth. The water-cooled air-tight hearth is provided with an air-tight chamber. The air-tight chamber is air-tight, and Introduce protective gas, and set a heat insulation layer and a heat insulation reflection plate, and a heat field is formed in the center of the heat insulation layer, and a heating element depending on the temperature required by the manufacturing process is provided in the heat field, and a carrier plate is placed on the carrier plate There is a hot-pressing die. The servo motor and pressure control device of the aforementioned pressurizing device are located above the water-cooled airtight hearth. The water-cooled airtight hearth is provided with a gas-tight shaft seal. Penetrated into the thermal field, and the aforementioned four-unit pressurizing assembly, four pressurizing columns are located above the four corners of the hot-pressing mold. With each set of 4-unit pressurizing assembly, at the same speed, The same pressure and the same positioning, precise pressure is applied to the four corners of the pressure surface above the hot pressing mold, so that the three-dimensional products to be hot pressed in the hot pressing mold are uniformly stressed, to avoid warping caused by uneven force, The lack of skew, etc., can effectively greatly improve the yield of hot pressing.

(1)‧‧‧Pressure device

(10)‧‧‧Pressure components

(11)‧‧‧Servo motor

(12)‧‧‧Pressure control device

(13)‧‧‧Water-cooled pressurized shaft

(14)‧‧‧Pressure column

(2)‧‧‧Hot pressing mold

(3)‧‧‧Hot-press forming area

(30)‧‧‧Water-cooled airtight hearth

(31)‧‧‧Airtight chamber

(32)‧‧‧Thermal insulation layer

(33)‧‧‧Insulation reflector

(34)‧‧‧Hot field

(35)‧‧‧Heating element

(36)‧‧‧Loading table

(37)‧‧‧Airtight shaft seal

Figure 1 is a cross-sectional view of a pressing device according to an embodiment of the present invention; Figure 2 is a top view of a hot press forming area according to an embodiment of the present invention.

In order to achieve the technical means of the aforementioned object of the invention, here is an example, and with the help of the following description of the drawings, your reviewer can gain a better understanding of the structure, features and effects of the invention.

The present invention is particularly aimed at the brand-new designer of the pressurizing device of the airtight continuous atmosphere sintering and forming device for the hot press forming of molded three-dimensional products. The hot press forming material of the present invention includes, but is not limited to, glass, metal, ceramic or cermet heterogeneous composite Materials etc.

As shown in FIG. 1, the pressing device (1) of the present invention corresponds to a hot-pressing mold (2) oppositely provided with a group, each group has a pressing unit (10) of 4 units, and the pressing unit (10) of each unit ) Each includes a servo motor (11), the lower end of the servo motor (11) is connected with a pressure control device (12) [pressure control device (12) can feedback the pressure, can be set for each group of 4 units of pressure components (10) Pre-press the hot-pressing die (2) with the same pressure value to make the hot-pressing die (2) with uniform pressure to avoid the loss caused by uneven pressure], a water-cooled pressurizing shaft (13) is connected under the pressure control device (12), water-cooled plus A pressure column (14) is connected under the pressure shaft (13) [the pressure column (14) can be made of graphite or graphite composite material, which is resistant to high temperature], the pressure device (1) of the present invention is provided in an airtight continuous heat The hot press forming area (3) of the press forming device (please refer to Figure 2). The hot press forming area (3) includes a water-cooled gas-tight furnace (30), and the water-cooled gas-tight furnace (30) is provided with gas Dense cavity (31), gas-tight cavity (31) is gas-tight, and the introduction of protective gas [generally inert gas, such as nitrogen, hydrogen, argon, etc.; the device to provide protective gas is a conventional technology, no more details], A heat-insulating layer (32) and a heat-insulating reflective plate (33) are provided, and a heat field (34) is formed in the center of the heat-insulating layer (32), and a heating element depending on the temperature required by the manufacturing process is provided in the heat field (34) (35) [Temperature control and other devices are conventional technologies, no need to go into details], and the carrier table (36), the carrier table (36) is provided with a hot pressing mold (2), and the servo of the aforementioned pressing device (1) The motor (11) and the pressure control device (12) are arranged above the water-cooled gas-tight furnace (30). The water-cooled gas-tight furnace (30) is provided with an airtight shaft seal (37). The pressure column (14) is inserted into the thermal field (34), and the four pressure units (10) of the four units mentioned above are equipped with four pressure columns (14) in the hot press mold (2) The upper position of the 4 corners [please refer to the second figure, in this embodiment, two sets of hot pressing molds (2) are placed on the bearing platen (36), and each set of hot pressing molds (2) has each Group 4 unit pressurization assembly (10)], with each group of 4 unit pressurization assembly (10), at the same speed, the same pressure and the same positioning, precisely press the hot press mold (2) The 4 corner positions of the pressure surface make the stress of the three-dimensional product to be hot-pressed in the hot-pressing mold (2) uniform, and avoid the loss of warpage and skew caused by the uneven force, which can effectively improve the yield of hot-pressing. .

In summary, the "pressurizing device of the air-tight continuous hot press forming device" disclosed in the present invention is unprecedented, and has not been seen in publications at home and abroad. The present invention can indeed eliminate the lack of conventional technology and achieve the design purpose, and it has fully met the patent requirements. You have filed an application in accordance with the law. I would like to ask your reviewing committee to benefit from the review and grant the patent in this case.

However, the above is only one of the preferred and feasible embodiments of the present invention, and is not intended to limit the scope of the present invention. It refers to the equivalent structural changes made by those skilled in the art using the description of the present invention and the scope of patent application. , Should be included in the patent scope of the invention.

(1)‧‧‧Pressure device

(10)‧‧‧Pressure components

(11)‧‧‧Servo motor

(12)‧‧‧Pressure control device

(13)‧‧‧Water-cooled pressurized shaft

(14)‧‧‧Pressure column

(2)‧‧‧Hot pressing mold

(3)‧‧‧Hot-press forming area

(30)‧‧‧Water-cooled airtight hearth

(31)‧‧‧Airtight chamber

(32)‧‧‧Thermal insulation layer

(33)‧‧‧Insulation reflector

(34)‧‧‧Hot field

(35)‧‧‧Heating element

(36)‧‧‧Loading table

(37)‧‧‧Airtight shaft seal

Claims (2)

A pressurizing device of an airtight continuous hot press forming device mainly corresponds to a set of hot press molds opposite to each other, each set has a press unit of 4 units, each press unit of the unit includes a servo motor, the lower end of the servo motor A pressure control device is connected, a water-cooled pressure shaft is connected below the pressure control device, and a pressure column is connected below the water-cooled pressure shaft. The aforementioned pressure device is provided in the hot press forming area of the airtight continuous hot press forming device. The hot-press forming area includes a water-cooled gas-tight furnace, which is provided with an air-tight chamber, the air-tight chamber is air-tight, and a protective gas is introduced, and a heat-insulating layer and a heat-shielding reflector are provided, and A thermal field is formed in the center of the thermal insulation layer. The thermal field is provided with a heating element depending on the temperature required by the manufacturing process, and a carrier platen. A thermal compression mold is placed on the carrier platen. The servo motor and pressure control device of the aforementioned pressure device are It is installed above the water-cooled airtight hearth. The water-cooled airtight hearth is provided with a gas-tight shaft seal and a water-cooled pressurizing shaft. The pressurized column is inserted into the hot field. 4 pressure columns are located above the 4 corners of the hot-pressing mold. With each group of 4 units of pressurizing components, precise pressure is applied to the 4 corners of the pressure-receiving surface above the hot-pressing mold. All parts of the three-dimensional product made by hot pressing are evenly stressed. The pressurizing device of the airtight continuous hot press forming device as described in item 1 of the patent application scope, wherein the pressurizing device pressurized column is made of graphite or graphite composite material.

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