TW201918461A - Pressurizing device for airtight continuous hot press forming apparatus capable of avoiding shortcomings of warpage and skew caused by uneven force - Google Patents

Abstract

The invention relates to a pressurizing device, in particular, applicable to an airtight continuous hot press forming apparatus for molding a three-dimensional product. The pressurizing device of the present invention is provided with one set corresponding to the hot press dies, each set having four units of pressurizing assemblies, each of the pressurizing assemblies of each unit includes a servo motor, wherein a lower end of the servo motor is connected with a pressure control device, a water-cooled pressurizing shaft is connected below the lower end of the pressure control device, and a pressurizing column is connected below the water-cooled pressurizing shaft. The pressurizing device of the present invention is disposed in a hot press forming zone of an airtight continuous hot press forming device, and the four units of pressurizing assemblies are provided with four pressurized columns disposed above the four corners of the hot press die. By using the four units of pressurizing assemblies, at the same speed and under the same pressure, with pressure being precisely applied on the 4 corners of the pressurized surfaces above the hot press die, the parts to be pressed in the hot press die are evenly pressed, thereby avoiding shortcomings of warpage, skew, and etc., caused by uneven force.

Description

 Pressurizing device for gas-tight continuous hot press forming device  

The invention belongs to the technical field of hot press forming devices, in particular to a new design of a pressurizing device suitable for molding a three-dimensional product gas-tight continuous hot press forming device, which has the same speed and the same speed by using four units of pressurized components. The pressure and the same positioning, precise pressure on the pressure-bearing surface 4 above the hot pressing die, so that the parts of the hot-pressing mold to be evenly stressed, to avoid the loss of warpage, skew, etc. caused by uneven force, Can effectively improve the hot press forming yield.

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 casing having a three-dimensional shape: the first one is to manufacture a plurality of flat glass units, and then form a glass casing having a three-dimensional 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.

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.

As mentioned above, the conventional pressurization system mainly consists of a pressure cylinder, a pressurizing shaft and a pressurizing column. The speed, pressure strength and precise positioning of the pressurizing column applied to the hot stamping die cannot be accurately controlled by the press cylinder. The displacement distance is set, and the pressing system is disposed at the center of each set of hot pressing molds, and is pressed at the center of the relative hot pressing mold by a single pressing system. When the size of the stereo glass to be hot-pressed is small, the flatness of the molded stereo glass can be maintained, but for the larger-sized molded stereo glass products (such as a tablet computer, a notebook computer, a car, etc.), Because the pressure exerted by the pressurizing system is concentrated in the center of the hot pressing mold, it is easy to cause unevenness such as warping and skewing at the four corners of the molded stereoscopic glass product, so that the yield of the molded stereo glass is extremely low. This is the biggest deficiency in the current use of technology, this lack is a difficult problem to be overcome in the industry.

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 "pressurizing device for a gas-tight continuous hot press forming device". The pressurizing device of the present invention is provided with a pair of pressurizing members corresponding to the hot pressing die, each group having 4 units. Each of the pressurizing components of each unit includes a servo motor, a lower end of the servo motor is connected with a pressure control device, a water-cooled pressurizing shaft is connected under the pressure control device, and a pressurized column is connected below the water-cooled pressurizing shaft. The utility model is provided in a hot press forming zone of a gas-tight continuous hot press forming device, wherein the hot press forming zone comprises a water-cooled airtight furnace, the water-cooled airtight furnace has an airtight cavity, and the airtight cavity is airtight, and The protective gas is introduced, and a heat-dissipating layer and a heat-dissipating reflector are arranged, and a heat field is formed in the center of the heat-dissipating layer, and a heating element having a temperature required for the process program is provided in the heat field, and a carrying platen is placed on the carrying plate There is a hot pressing die, the servo motor and the pressure control device of the pressing device are arranged above the water-cooled airtight furnace, the water-cooled airtight furnace is provided with a gas tight shaft seal, and the cold pressurized shaft is inserted, and the pressurized column is provided. Wear Into the thermal field, and the four units of the pressurizing assembly, the four pressurized columns are placed above the four corners of the hot stamping die, with the same speed and the same speed by each set of four units of pressurized components. Pressure and the same positioning, precise pressure is applied to the four corners of the pressure-receiving surface above the hot pressing die, so that the parts of the hot-pressing mold to be hot-pressed into the three-dimensional product are evenly stressed, avoiding warpage, skew, etc. caused by uneven force. Missing, can effectively improve the hot press forming yield.

(1) ‧‧‧Pressure device

(10) ‧‧‧ Pressurized components

(11)‧‧‧Servo motor

(12)‧‧‧ Pressure control device

(13)‧‧‧Water-cooled compression shaft

(14) ‧ ‧ pressurized column

(2) ‧‧‧ hot pressing mold

(3) ‧‧‧Hot forming zone

(30)‧‧‧Water-cooled airtight furnace

(31) ‧ ‧ airtight chamber

(32) ‧‧‧ Thermal insulation

(33) ‧‧‧Heat-dissipating reflector

(34) ‧ ‧ thermal field

(35) ‧‧‧Heating elements

(36)‧‧‧ Carrying platen

(37) ‧ ‧ airtight shaft seal

1 is a cross-sectional view of a pressurizing device of an embodiment of the present invention; and FIG. 2 is a top view of a hot press forming zone of an embodiment of the present invention.

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 design of a pressurizing device for a gas-tight continuous atmosphere sintering and molding apparatus for hot-press molding of a molded three-dimensional product, and the thermoformed material of the present invention includes, but is not limited to, a glass, metal, ceramic or cermet heterogeneous composite. Materials, etc.

Referring to Fig. 1, the pressurizing device (1) of the present invention is provided with a set of pressurizing assemblies (10) corresponding to the hot pressing die (2), each unit having 4 units, and a pressurizing assembly of each unit (10). Each includes a servo motor (11). The lower end of the servo motor (11) is connected with a pressure control device (12). [The pressure control device (12) can feedback pressure, and can set each group of 4 units of pressurized components (10). Preheating the mold (2) with the same pressure value, so that the hot pressing mold (2) is subjected to uniform pressure to avoid the loss of pressure unevenness], and a water-cooled pressing shaft (13) is connected under the pressure control device (12), and the water-cooled type is added. A pressure column (14) is connected under the pressure shaft (13). [The pressure column (14) can be made of graphite or graphite composite material to withstand high temperature], and the pressurizing device (1) of the present invention is set in a gas-tight continuous heat. The hot press forming zone (3) of the press forming apparatus (see Fig. 2), the hot press forming zone (3) comprises a water-cooled airtight furnace (30), and the water-cooled airtight furnace (30) is provided with gas The dense chamber (31), the airtight chamber (31) is airtight and is supplied with a shielding gas [generally an inert gas such as nitrogen, hydrogen, argon, etc.; Using technology, not much rumors], and there is a thermal insulation layer (32) and a heat-dissipating reflector (33), and a thermal field (34) is formed in the center of the thermal insulation layer (32), and a thermal field (34) is provided. The heating element (35) of the temperature required for the process program [the temperature control device is a conventional technology, not much rumor], and the carrying platen (36), and the carrying platen (36) is provided with a hot pressing die (2), the aforementioned The servo motor (11) and the pressure control device (12) of the pressurizing device (1) are disposed above the water-cooled airtight furnace (30), and the water-cooled airtight furnace (30) is provided with a gas tight shaft seal (37) for supplying water. The cold pressurizing shaft (13) is inserted, the pressurizing column (14) is inserted into the thermal field (34), and the four-unit pressurizing assembly (10) has four pressurized columns (14) Positioned above the four corners of the hot stamping die (2) [Please refer to Fig. 2, in this embodiment, two sets of hot pressing die (2) are placed on the carrying platen (36), and each group is hot pressed. The mold (2) has each group of 4 units of pressurizing assembly (10), with each group of 4 units of pressurized components (10), with the same speed, the same pressure and the same positioning, precise pressure At the four corners of the pressure receiving surface above the hot pressing die (2), the hot pressing die (2) is to be hot pressed Products made perspective departments uniform force to avoid uneven force generated deletions warping, distortion, etc., can effectively yield a substantial increase in the hot press forming.

In summary, the present invention discloses a "pressure device for a gas-tight continuous hot press forming device" which has never been seen in the publications disclosed at home and abroad, and has a novel patent requirement. 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)

 A pressurizing device for a gas-tight continuous hot press forming device, which mainly corresponds to a set of hot pressing dies, each set having 4 units of pressurizing components, each of which comprises a servo motor, a lower end of the servo motor A pressure control device is connected, a water-cooled pressure shaft is connected under the pressure control device, and a pressure column is connected below the water-cooled pressure shaft, and the pressurizing device is disposed in a hot press forming zone of the gas-tight continuous hot press forming device. The hot press forming zone comprises a water-cooled airtight furnace, the water-cooled airtight furnace is provided with a gas-tight cavity, the airtight cavity is airtight, and a shielding gas is introduced, and a heat insulation layer and a heat-dissipating reflector are provided, and A heat field is formed in the center of the heat-dissipating layer, and a heating element for the temperature required by the process program is provided in the heat field, and a loading platen is provided. The hot plate is placed on the carrying plate, and the servo motor and the pressure control device of the pressing device are It is arranged above the water-cooled airtight furnace, the water-cooled airtight furnace is provided with a gas-tight shaft seal water supply cold-pressing shaft, and the pressure column is inserted into the heat field, and the above-mentioned 4-unit pressure component is 4 pressurized columns It is placed at the top of the four corners of the hot-pressing mold. With each group of 4-unit pressurizing components, the pressure is accurately applied to the four corners of the pressing surface above the hot pressing die, so that the hot-pressed molds are to be hot-pressed to form three-dimensional products. Even by force.    The pressurizing device of the hermetic continuous hot press forming device according to claim 1, wherein the pressurizing device pressurizing column is made of graphite or graphite composite material.