CN109895440B - Pressurizing device of airtight continuous hot-press forming device - Google Patents

Abstract

The invention relates to a pressurizing device, in particular to an airtight continuous hot-pressing forming device for molding three-dimensional products, which is provided with a group of pressurizing devices corresponding to a hot-pressing mold, each group is provided with four pressurizing components, each pressurizing component comprises a servo motor, the lower end of the servo motor is connected with a pressure control device, a water-cooled pressurizing shaft is connected below the pressure control device, a pressurizing column is connected below the water-cooled pressurizing shaft, the pressurizing device is arranged in a hot-pressing forming area of the airtight continuous hot-pressing forming device, the four pressurizing components are provided with pressurizing columns which are arranged above four corners of the hot-pressing mold, and the four pressurizing components of each group are accurately pressurized at the four corners of a pressurized surface above the hot-pressing mold at the same speed and the same pressure, so that the four corners of elements to be hot-pressed in the hot-pressing mold are uniformly stressed, and the defects of warping, skewing and the like caused by uneven stress are avoided.

Description

Pressurizing device of airtight continuous hot pressing forming device

technical field

The invention provides a thermocompression forming device, in particular a pressurizing device of an airtight continuous thermocompression forming device suitable for manufacturing three-dimensional products.

Background technique

Thermoforming is a processing method of polymer materials. It mainly puts a material with a certain thickness in a mold, heats the mold or the environment, softens the material and covers the surface of the mold, and then squeezes it with a machine, and then solidifies after the cooling stage. , you can get thermoformed products.

The material for thermoforming is glass, for example, because glass has high light transmission characteristics, so display devices (such as mobile phones, watches and other electronic products) often choose it as the shell of the window part. You can see that the surface of handheld electronic products 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 a seam will be formed on the upper surface of the electronic product. Furthermore, since a certain width of the mechanism must be reserved around the electronic product 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 glass casings of electronic products.

The flat glass case is relatively easy to manufacture, but the glass case with a three-dimensional shape is relatively difficult to manufacture. At present, there are generally two methods for manufacturing a three-dimensional glass case: the first method is: manufacturing a plurality of flat glass units, and then forming a three-dimensional glass case 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, the above two 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 a glass with a shape is to be produced, it is better to arrange the flat glass material between an upper mold and a lower mold, and then heat the upper mold , the lower module and the glass material to soften the glass material. When the above-mentioned glass material is softened, the upper mold and the lower mold can perform a mold closing action, so that the upper mold and the lower mold can jointly shape the shape of the glass material along a mold-closing direction, so as to produce the corresponding molded glass . China Taiwan Patent Announcement No. M452174 "Molding Equipment for Manufacturing Molded Glass" (announcement date is May 01, 2013), which includes a female mold part, a first male mold part, and a second male mold parts, a supporting mandrel and a pressing 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 supporting ejector rod is passed through the female mold part, and the supporting ejector rod is used to push against the second male mold part, so as to support the second male mold part and the first male mold part to be clamped together A molded glass. The pressing rod is arranged on one side of the first male mold part, and the pressing rod 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 mother mold part is moved to a clamping position for molding the molded glass.

The applicant previously proposed the approved Taiwan No. M536234 "Airtight Molded Three-dimensional Glass Continuous Molding Device", which is a new design for the continuous molding device designed for molded three-dimensional glass products. It is mainly composed of a furnace body, which is airtight. There is an exchange system at the two ends, and an airtight cavity is provided inside the furnace body; the exchange system is located at both ends of the furnace body, and an external conveying channel is provided between the exchange systems at the two ends of the furnace body, and each exchange system includes an airtight chamber located on the side of the furnace body The inner airtight door and the outer airtight door located on the side of 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; the airtight chamber , located inside the furnace body, including an airtight chamber, which has an inner conveying channel, which is connected to the inner airtight door of the exchange system at the two ends of the furnace body, and is equipped with slide rails to serve as a carrier for moving track, the airtight cavity is airtight, and the protective gas is introduced, and there are heating zone according to the process), high temperature forming zone and cooling zone, at least one layer of heat insulation layer is provided in the heating zone and high temperature forming zone, and the break A heat field is formed in the center of the heat layer, and a heating element is installed in the heat field according to the temperature required by the process procedure. The cooling area is equipped with a cooling device, and the high-pressure forming area is equipped with a pressurization system; the outer conveyor is connected to the exchange system at the two ends of the furnace body; The pressure system is mainly composed of a pressure cylinder, a pressure shaft and a pressure column; in the present invention constituted in this way, the flat glass to be formed is placed on the molding surface of the mould, the mold is placed on the carrier plate, and the carrier plate enters the airtight cavity through the exchange system , after preheating in the heating zone and high temperature in the high-temperature forming zone, the glass in the mold is softened and formed by pressing the pressure system, and then cooled in the cooling zone, then sent out of the furnace body through the exchange system, and then removed It can also achieve the effect of continuous, high-efficiency and high-quality molding of three-dimensional glass.

As mentioned above, the existing pressurization system is mainly composed of a pressure cylinder, a pressurization shaft and a pressurization column. Since the pressure cylinder cannot accurately control the speed, pressure intensity and precise positioning of the pressurization column on the hot pressing mold Displacement distance, and the pressurization system is set at the center of each set of hot-pressing molds, and a single pressurization system is used to apply pressure to the center of the relative hot-pressing mold. This means that when the size of the three-dimensional glass to be hot-pressed is small, the flatness of the molded three-dimensional glass can still be maintained. The pressure applied by the pressurization system is concentrated in the center of the hot-pressing mold, which may easily cause warping, skewing and other unevenness in the four corners of the molded three-dimensional glass product, resulting in a very low yield rate of the molded three-dimensional glass hot-pressing molding. This is the biggest defect in the current prior art, and this deficiency is a difficult problem to be overcome urgently in the industry.

Contents of the invention

The main purpose of the present invention is to provide a pressurizing device of an airtight continuous hot-press forming device. The pressurizing device of the present invention is provided with a group corresponding to the hot-pressing mold, and each group has four pressurizing assemblies, each pressurizing assembly Each includes a servo motor, the lower end of the servo motor is connected with a pressure control device, the pressure control device is connected with a water-cooled pressurizing shaft, and the water-cooled pressurized shaft is connected with a pressurized column. The hot press forming area of the forming device, the hot press forming area includes a water-cooled airtight furnace, the water-cooled airtight furnace is provided with an airtight chamber, the airtight chamber is airtight, and the protective gas is introduced, and there is a breaker The thermal layer and the heat-insulating reflective plate, and a heat field is formed in the center of the heat-insulation layer. The heating element and the carrying plate are arranged in the heat field. The carrying plate is equipped with a hot-pressing mold, the servo motor and pressure The control device is installed above the water-cooled airtight furnace, and the water-cooled airtight furnace is equipped with an airtight shaft seal for the water-cooled pressurized shaft to penetrate, and the pressurized column is penetrated into the thermal field, and the aforementioned four pressurized components, The four pressurized columns are arranged above the four corners of the hot pressing mold.

Preferably, the pressurizing column of the pressurizing device is made of graphite or graphite composite material.

Through each group of four pressing components, with the same speed, the same pressure and the same positioning, the pressure is precisely applied to the four corners of the pressure surface above the hot pressing mold, so that each part of the three-dimensional product to be hot pressed in the hot pressing mold is subjected to pressure. The force is uniform, avoiding warping, skewing and other defects caused by uneven force, which can effectively and greatly improve the yield rate of hot pressing.

Description of drawings

Figure 1 is a sectional view of a pressurizing device according to an embodiment of the present invention;

Fig. 2 is a top view of the thermocompression forming area according to the embodiment of the present invention.

In the picture:

1 Pressurization device; 10 Pressurization component; 11 Servo motor; 12 Pressure control device; 13 Water-cooled pressurized shaft; 14 Pressurized column; 32 heat insulation layer; 33 heat insulation reflection plate; 34 thermal field; 35 heating element;

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

The present invention is especially aimed at the new designer of the pressure device of the airtight continuous atmosphere sintering molding device for molding three-dimensional products. The hot pressing molding materials of the present invention include but are not limited to glass, metal, ceramics or cermet heterogeneous composites materials etc.

Please refer to Fig. 1, the pressing device 1 of the present invention is provided with a group corresponding to the hot pressing mold 2, and each group has four pressing assemblies 10, and each pressing assembly 10 includes a servo motor 11, and the lower end of the servo motor 11 It is connected with a pressure control device 12 (the pressure control device 12 can feedback pressure, and each group of four pressurizing components 10 can be set to apply the same pressure value to the hot pressing mold 2, so that the hot pressing mold 2 can bear the pressure evenly and avoid uneven pressure resulting in missing), the pressure control device 12 is connected with a water-cooled pressurized shaft 13, and the water-cooled pressurized shaft 13 is connected with a pressurized column 14 (pressurized column 14 can be made of graphite or graphite composite material to withstand high temperature), this Invention pressurizing device 1 is arranged on the hot-press forming zone 3 (please refer to Fig. 2) of airtight continuous hot-press forming device, and this hot-press forming zone 3 comprises water-cooled type airtight furnace chamber 30, and in water-cooled type airtight furnace chamber 30 An airtight chamber 31 is provided, and the airtight chamber 31 is an airtight type, and a protective gas (generally an inert gas, such as nitrogen, hydrogen, argon, etc.; the device for providing the protective gas is the prior art, so no more details) is introduced, And be provided with heat insulation layer 32 and heat insulation reflective plate 33, and heat insulation layer 32 center forms heat field 34, is provided with the heating element 35 (temperature control of automatic temperature adjustment in the heat field 34 depending on process procedure or the demand of different process steps) and other devices are prior art, not much to say), and the carrying plate 36, the carrying plate 36 is equipped with a hot pressing mold 2, the servo motor 11 and the pressure control device 12 of the aforementioned pressurizing device 1 are located on a water-cooled airtight Above the furnace 30, the water-cooled airtight furnace 30 is provided with an airtight shaft seal 37 for the water-cooled pressurized shaft 13 to penetrate, and the pressurized column 14 is penetrated into the thermal field 34, and the aforementioned four pressurized components 10, their Four pressure columns 14 are located at the top positions of the four corners of the hot-pressing mold 2 (please refer to shown in Figure 2, in the present embodiment, two groups of hot-pressing molds 2 are placed on the loading platen 36, and each group of hot-pressing molds 2 There are four pressing assemblies 10 in each group), through each group of four pressing assemblies 10, with the same speed, the same pressure and the same positioning, the pressure is precisely applied to the pressure surface above the hot pressing mold 2 The positions of the four corners make the three-dimensional products to be hot-pressed molded in the hot-pressing mold 2 evenly stressed, avoiding warping, skewing and other defects caused by uneven force, which can effectively and greatly improve the yield of hot-pressing molding.

The above-mentioned embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art on the basis of the present invention are all within the protection scope of the present invention. The protection scope of the present invention shall be determined by the claims.

Claims (2)

1. A pressurizing device of an airtight continuous hot press molding device, characterized in that it comprises: mainly corresponding to the hot press mold, one group is relatively provided and each group has four pressurizing assemblies, and each pressurizing assembly includes a Servo motor, the lower end of the servo motor is connected with a pressure control device, the pressure control device is connected with a water-cooled pressurizing shaft, and the water-cooled pressurized shaft is connected with a pressurizing column, and the aforementioned pressurizing device is installed in the heat of the airtight continuous hot pressing forming device. Compression forming area, the hot pressing forming area includes a water-cooled airtight furnace, and an airtight chamber is arranged in the water-cooled airtight furnace; Heat reflection plate; a heat field is formed in the center of the heat-insulating layer, a heating element is arranged in the heat field, and a carrying plate is placed on the carrying plate, and a hot-pressing mold is placed on the carrying plate, and the servo motor and pressure control device of the aforementioned pressurizing device are located on Above the water-cooled gas-tight furnace, the water-cooled gas-tight furnace is equipped with an air-tight shaft seal for the water-cooled pressurized shaft to penetrate, and the pressurized column is penetrated into the thermal field, and the four pressurized parts of the aforementioned four pressurized components The column is set above the four corners of the hot pressing mold. During hot pressing, the four pressurizing components, with the same speed, the same pressure and the same positioning, precisely apply pressure to the upper pressure surface of the hot pressing mold. corner position. 2. The pressurizing device of the airtight continuous hot-press molding device according to claim 1, characterized in that, the pressurizing column of the pressurizing device is made of graphite or graphite composite material.

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