High-pressure gas forming die and high-pressure gas forming die

Abstract

The utility model discloses a high-pressure gas forming die which comprises a bottom die with a forming cavity and further comprises a cover plate, the cover plate covers the forming cavity, the cover plate is provided with a plurality of gas guide channels, and inlets in one ends of the gas guide channels are located on the outer side of the cover plate and used for guiding in high-pressure gas. And an outlet at the other end of the gas guide channel is positioned on the inner side of the cover plate and is used for guiding high-pressure gas into the forming cavity. The cover plate is arranged on the upper portion of the bottom die and effectively seals the forming cavity, namely, a stable space structure is formed, and therefore heat loss after the membrane is heated is greatly reduced. The high-pressure gas forming die can effectively solve the problem that after a membrane is heated, the cooling speed of the membrane is too high in the die assembly process of an upper forming die and a lower forming die, and consequently the forming effect is poor. The utility model further discloses a high-pressure gas forming die comprising the high-pressure gas forming die.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping, and more specifically, to a high-pressure gas forming die, and also to a high-pressure gas forming die comprising the high-pressure gas forming die. Background Art

[0002] At present, the process technology scheme for high-pressure forming of diaphragms mainly includes the following steps: after the parameters of the high-pressure forming equipment are set and the set parameters are reached, the diaphragm is placed on the mold to be formed; after the diaphragm is placed on the fixed piles of the mold, it enters the high-pressure forming equipment and a diaphragm fixing cover is placed to prevent the diaphragm from being deformed due to heating and causing the diaphragm to detach from the fixed piles of the mold, causing the diaphragm to fail in forming; after the diaphragm is completely fixed, the infrared ceramic heating plate is moved from the high-pressure forming machine to the top of the diaphragm to bake and heat the diaphragm; after the infrared ceramic heating plate is heated, the heating plate returns to its original position, at which time the lower mold rises with the diaphragm and combines with the upper mold of the equipment; after combining with the upper mold, high-pressure air is filled in, and the heated and softened diaphragm fits with the mold under the action of high-pressure gas to complete the high-pressure forming of the diaphragm; after the diaphragm is high-pressure formed, the upper and lower molds are separated, and the lower mold returns to its original position and the diaphragm is taken out.

[0003] In each step of the diaphragm high-pressure forming, when the lower mold rises and combines with the upper mold, when the lower mold moves upward, the relative movement of the air and the diaphragm will cause the heat of the diaphragm to be taken away by the air, and the temperature stability of the diaphragm itself and the environment in which it is located will be reduced, thereby reducing the yield of the diaphragm after high-pressure forming.

[0004] In summary, how to effectively solve the problem of poor molding effect caused by excessively fast cooling of the diaphragm during high-pressure gas molding is an urgent problem that technicians in this field need to solve. Utility Model Content

[0005] In view of this, the first purpose of the utility model is to provide a high-pressure gas molding mold, which can effectively solve the problem of poor molding effect caused by the diaphragm cooling down too quickly during the closing process of the upper and lower molding molds after the diaphragm is heated. The second purpose of the utility model is to provide a high-pressure gas molding mold including the above-mentioned high-pressure gas molding mold.

[0006] In order to achieve the above first purpose, the utility model provides the following technical solutions:

[0007] A high-pressure gas molding mold includes a bottom mold with a molding cavity, and also includes a cover plate, which covers the molding cavity and has multiple air guide channels. The inlet at one end of the air guide channel is located on the outside of the cover plate for introducing high-pressure gas, and the outlet at the other end of the air guide channel is located on the inside of the cover plate for introducing high-pressure gas into the molding cavity.

[0008] In the above-mentioned high-pressure gas forming mold, a cover plate is arranged on the upper part of the bottom mold, and air guide holes are arranged on the cover plate. This makes it possible that after the diaphragm is heated, the cover plate effectively seals the forming cavity to reduce the exchange of gas with the outside world, thereby reducing the cooling rate. Then, high-pressure gas is introduced through the air guide channel to achieve stamping forming, because the temperature of the diaphragm is effectively controlled, and the stamping forming effect can be better guaranteed. A cover plate is arranged on the upper part of the bottom mold, and the cover plate effectively seals the forming cavity, that is, a relatively stable spatial structure is formed, thereby greatly reducing the heat loss of the diaphragm after heating. In particular, the air flow agitation caused by the movement of outsiders, the opening and closing of doors, the air conditioning airflow in the room, and the side door of the switch equipment greatly reduces the temperature stability of the diaphragm. In summary, the high-pressure gas forming mold can effectively solve the problem of poor molding effect caused by the excessive cooling rate of the diaphragm during the closing of the upper and lower molding molds after the diaphragm is heated.

[0009] In some technical solutions, the cover plate includes a frame and an infrared-transmitting plate located in the middle of the frame.

[0010] In some technical solutions, the air guide channel is provided on the frame.

[0011] In some technical solutions, the outlet of the air guide channel deviates away from the bottom of the molding cavity.

[0012] In some technical solutions, the infrared-transmitting panel is infrared-transmitting glass.

[0013] In some technical solutions, a positioning column for positioning the diaphragm is provided in the molding cavity; the inlet direction of the air guide channel is consistent with the opening direction of the molding cavity.

[0014] In some technical solutions, the cover plate covering portion is a metal structure.

[0015] In some technical solutions, it also includes an air supply device for introducing high-temperature gas into the cover plate to heat the diaphragm; the air supply device is connected to the air guide channel or to the through hole on the cover plate.

[0016] In order to achieve the above second purpose, the utility model also provides a high-pressure gas forming mold, which includes any of the above high-pressure gas forming molds, including an infrared heater and an upper mold for providing high-pressure gas, the upper mold is located on the upper side of the high-pressure gas forming mold, the infrared heater can move into between the high-pressure gas forming mold and the upper mold; the upper mold has an outlet connected to the inlet of the air guide channel of the high-pressure gas forming mold. Since the above high-pressure gas forming mold has the above technical effects, the high-pressure gas forming mold having the high-pressure gas forming mold should also have corresponding technical effects.

[0017] In some technical solutions, the infrared heater can be pushed and pulled horizontally to enter between the high-pressure gas forming mold and the upper mold; the lower side of the upper mold is provided with an air distribution plate for connecting to the inlets of each air guide channel on the high-pressure gas forming mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of a high-pressure gas forming mold provided by an embodiment of the utility model;

[0020] Figure 2 A schematic diagram of the structure of a bottom mold of a high-pressure gas forming mold provided by an embodiment of the utility model;

[0021] Figure 3 A schematic diagram of the installation structure of the gas distribution plate provided in the embodiment of the utility model;

[0022] Figure 4 A schematic diagram of the mold closing structure of a high-pressure gas forming mold provided in an embodiment of the utility model.

[0023] The following are marked in the accompanying drawings:

[0024] Bottom mold 1, molding cavity 2, cover plate 3, air distributor plate 4, upper mold 5;

[0025] Frame 31 , infrared transparent panel 32 , air guide channel 33 . DETAILED DESCRIPTION

[0026] The utility model discloses a high-pressure gas forming mold, which effectively solves the problem that the forming effect is not good due to the excessively fast cooling speed of the diaphragm during the closing process of the upper and lower forming molds after the diaphragm is heated.

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-Figure 4 , Figure 1A schematic diagram of the structure of a high-pressure gas forming mold provided by an embodiment of the utility model; Figure 2 A schematic diagram of the structure of a bottom mold of a high-pressure gas forming mold provided by an embodiment of the utility model; Figure 3 A schematic diagram of the installation structure of the gas distribution plate provided in the embodiment of the utility model; Figure 4 A schematic diagram of the mold closing structure of a high-pressure gas forming mold provided in an embodiment of the utility model.

[0029] In some embodiments, a high-pressure gas forming mold is provided. The high-pressure gas forming mold is generally a component. When the high-pressure gas forming mold is arranged up and down, the high-pressure gas forming mold can also be called a lower mold. Specifically, the high-pressure gas forming mold mainly includes a bottom mold 1 and a cover plate 3.

[0030] The cover plate 3 covers the molding cavity 2 so that the molding cavity 2 forms a relatively closed cavity, which is not required to be completely closed. As mentioned later, the air guide channel 33 can be open. The main purpose of the cover plate 3 is to reduce the airflow exchange between the molding cavity 2 and the external environment compared to the molding cavity opening being completely open, so that when the lower mold rises, the high temperature environment can be better maintained.

[0031] The cover plate 3 has one or more air guide channels 33, one end of the air guide channel 33 has an inlet located outside the cover plate 3, such as the upper side, for introducing high-pressure gas, and the other end of the air guide channel 33 has an outlet located inside the cover plate 3 for introducing high-pressure gas into the molding cavity 2. Here, inside and outside are relative to the molding cavity 2. So that high-pressure gas can be introduced through the air guide channel 33 on the cover plate 3 to achieve stamping. As for the heating of the diaphragm, it can be through the cover plate 3 to directly heat the diaphragm in the molding cavity 2, or it can be heated by heating the cover plate 3 to heat the inside.

[0032] In the above-mentioned high-pressure gas forming mold, a cover plate 3 is arranged on the upper part of the bottom mold 1, and an air guide hole is arranged on the cover plate 3. This makes it possible that after the diaphragm is heated, the cover plate 3 effectively seals the forming cavity 2 to reduce the exchange of gas with the outside world, thereby reducing the cooling rate. Then, high-pressure gas is introduced through the air guide channel 33 to achieve stamping forming. Because the temperature of the diaphragm is effectively controlled, the stamping forming effect can be better guaranteed. A cover plate 3 is arranged on the upper part of the bottom mold 1, and the cover plate 3 effectively seals the forming cavity 2, that is, a relatively stable spatial structure is formed, thereby greatly reducing the heat loss after the diaphragm is heated. In particular, the air flow agitation caused by the movement of outsiders, the opening and closing of doors, the air conditioning airflow in the room, and the side door of the switch equipment greatly reduces the temperature stability of the diaphragm. In summary, the high-pressure gas forming mold can effectively solve the problem of poor molding effect caused by the excessive cooling rate of the diaphragm during the closing process of the upper and lower molding molds after the diaphragm is heated.

[0033] In some embodiments, the cover plate 3 includes a frame 31 and an infrared-transmitting plate 32 located in the middle of the frame 31. The infrared-transmitting plate 32 refers to a plate that can transmit infrared light so that infrared heating can be performed. That is, the infrared light of the infrared heating device passes through the infrared-transmitting plate 32 to heat the internal diaphragm. Generally speaking, the infrared heating device is a ceramic heating unit. The infrared-transmitting area of ​​the infrared-transmitting plate 32 can correspond to the size of the diaphragm molding area or can be slightly larger or smaller, so as to meet the infrared heating requirements.

[0034] It should be noted that the shape of the frame 31 can be circular, square or other special shapes. The frame 31 generally includes a frame edge extending along the edge of the infrared-transmitting plate 32, and the frame edge extends in a ring structure. The material of the frame edge is generally similar to or the same as that of the bottom mold 1.

[0035] In some embodiments, the above-mentioned air guide channel 33 can be set on the frame 31, or can be set on the infrared transparent panel 32. Since the thickness of the infrared transparent panel 32 is relatively thin, in order to ensure that the heating meets the requirements, if an air guide channel 33 is set on the infrared transparent panel 32, the strength of the infrared transparent panel 32 will be reduced, and the manufacturing cost will be increased.

[0036] In some embodiments, the frame 31 may be provided with an air guide channel 33. In order to improve the air guide efficiency, the frame 31 may be provided with a plurality of air guide channels 33 in sequence along the extending direction of the frame edge. Since the frame 31 is relatively strong, it may be thickened without affecting the heating effect, thereby being able to meet the use requirements well.

[0037] In some embodiments, the air guide channel 33 may be perpendicular to the bottom of the molding cavity 2, or may be arranged at an angle, so that the outlet of the air guide channel 33 is inclined relative to the bottom of the molding cavity 2 or parallel to the bottom of the molding cavity 2. Since the number of air guide channels 33 is limited, the outlet of the air guide channel 33 is directly toward the bottom of the molding cavity 2, which easily leads to concentrated air pressure, which is not conducive to uniform distribution. Therefore, it is preferred that the outlet of the air guide channel 33 is arranged at an angle, and is more inclined to be parallel to the bottom of the molding cavity 2, so that the diaphragm at the bottom of the molding cavity 2 is subjected to more uniform air pressure.

[0038] In some embodiments, it is preferred that the outlet of the air guide channel 33 deviates away from the bottom of the molding cavity 2, so that the high-pressure gas at the outlet is blown away from the diaphragm, and then under the action of the infrared transparent plate 32, a high-pressure environment is formed inside as a whole to punch the diaphragm. Taking the molding cavity 2 opening upward as an example, the infrared transparent plate 32 is arranged parallel to the bottom of the molding cavity 2, that is, arranged horizontally. At this time, the outlet of the air guide channel 33 is biased toward the infrared transparent plate 32, that is, tilted upward. Specifically, relative to the plane parallel to the bottom of the molding cavity 2 or the infrared transparent plate 32, the outlet deviation angle of the air guide channel 33 can be between 5 degrees and 45 degrees, preferably about 10 degrees.

[0039] More importantly, the outlet of the air guide channel 33 deviates upward relative to the bottom of the molding cavity 2. This can reduce the air entering through the air guide channel 33 when the lower mold rises to reduce the film temperature.

[0040] In some embodiments, the inlet of the air guide channel 33 can be oriented in the same direction as the opening of the molding cavity 2, such as being arranged upward, so as to facilitate docking with the upper mold 5. For example, the inlet of the air guide channel 33 can be arranged on the upper side of the frame 31. Specifically, the air guide channel 33 can be L-shaped, with the upper end of the vertical portion being the inlet, the lower end of the vertical portion being connected to one end of the horizontal portion, and the other end of the horizontal portion extending toward the middle of the molding cavity 2, so as to form an outlet of the air guide channel 33 on the lateral inner side of the frame 31.

[0041] In some embodiments, in order to facilitate the transmission of infrared light, the infrared-transmitting plate 32 may be infrared-transmitting glass. Of course, in addition to infrared-transmitting glass, the infrared-transmitting plate 32 may also be made of special ceramics, glass fibers, etc., which can also meet the conditions of transmittance, temperature, and pressure. Generally speaking, the wavelength range of ceramic infrared radiation is 2-10 microns, and according to the physical properties of the ceramic heating up to 500°C (degrees Celsius) and the maximum pressure of the equipment 150 bar (hundreds of kilopascals), the selection of infrared-transmitting glass can meet the heating and pressure restrictions.

[0042] In some embodiments, for better molding, positioning columns for positioning the diaphragm may be provided in the bottom mold 1 .

[0043] In some embodiments, in order to better fix the diaphragm, the edge of the cover plate 3 can cooperate with the bottom mold 1 to clamp the edge of the diaphragm. Specifically, the edge of the frame 31 can cooperate with the bottom mold 1 to clamp the edge portion of the diaphragm.

[0044] In some embodiments, of course, the heating of the internal membrane, in addition to the covering part of the cover plate 3 being mainly the infrared transparent plate 32, can also be heated from the outside by means of an infrared heating device. Of course, the cover plate 3 can also be a heating cover plate, so that the heat of the cover plate 3 is generated, and then the internal membrane is heated. The heating of the cover plate 3 can be through the heating wire in the middle of the cover plate 3, or the covering part of the cover plate 3 can be a metal structure. In this case, the above-mentioned infrared heating device or other heating devices can be used to heat the covering part of the cover plate 3.

[0045] In some embodiments, in addition to heating by the cover plate 3, an air supply device may be provided, which is used to introduce high-temperature gas into the cover plate 3 to heat the diaphragm. The air supply device is connected to the air guide channel 33 or to the through hole on the cover plate 3, where the through hole refers to a channel different from the air guide channel 33. By introducing high-temperature gas, the diaphragm can be heated. Of course, the air supply device can also be provided together with infrared heating, so that the air supply device is a supplementary heating device.

[0046] Based on the high-pressure gas forming mold provided in the above embodiments, the utility model also provides a high-pressure gas forming mold, which includes any one of the high-pressure gas forming molds in the above embodiments, and also includes an infrared heater and an upper mold 5 for providing high-pressure gas, the upper mold 5 is located on the upper side of the high-pressure gas forming mold, and the infrared heater can move between the high-pressure gas forming mold and the upper mold 5; the upper mold 5 has an outlet connected to the inlet of the air guide channel 33 of the high-pressure gas forming mold. Since the high-pressure gas forming mold adopts the high-pressure gas forming mold in the above embodiments, please refer to the above embodiments for the beneficial effects of the high-pressure gas forming mold.

[0047] In some embodiments, the infrared heater can be pushed and pulled horizontally to enter between the high-pressure gas forming mold and the upper mold 5. Specifically, the infrared heater can be limited by a horizontal track to facilitate the horizontal pushing and pulling of the infrared heater. The infrared heater extends when the film is baked, and retracts after the film is heated.

[0048] In some embodiments, considering that a plurality of air guide channels 33 are generally provided on the frame edge, in order to facilitate the simultaneous supply of air to the plurality of air guide channels 33, it is preferred that an air distributor plate 4 for docking the inlets of each air guide channel 33 on the high-pressure gas forming mold is provided on the lower side of the upper mold 5. Specifically, the cover plate 3 is rectangular, and air guide channels 33 are provided at the four corners, and an air guide channel 33 is also provided in the middle of the frame edge in the length direction, so that a total of six air guide channels 33 are provided. After heating is completed, the high-pressure gas forming mold can be driven to rise by the lifting device so that the air guide channel 33 docks with the air distributor plate 4, and after the stamping is completed, the high-pressure gas forming mold is driven to descend by the driving device.

[0049] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0050] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-pressure gas forming mold, comprising a bottom mold having a forming cavity, characterized in that: It also includes a cover plate, which covers the molding cavity and has multiple air guide channels. The inlet at one end of the air guide channel is located on the outside of the cover plate for introducing high-pressure gas, and the outlet at the other end of the air guide channel is located on the inside of the cover plate for introducing high-pressure gas into the molding cavity.

2. The high-pressure gas forming mold according to claim 1, characterized in that: The cover plate comprises a frame and an infrared-transmitting plate located in the middle of the frame.

3. The high-pressure gas forming mold according to claim 2, characterized in that: The air guide channel is arranged on the frame.

4. The high-pressure gas forming mold according to claim 3, characterized in that: The outlet of the air guide channel deviates away from the bottom of the molding cavity.

5. The high-pressure gas forming mold according to claim 4, characterized in that: The infrared-transmitting panel is infrared-transmitting glass.

6. The high-pressure gas forming mold according to claim 5, characterized in that: A positioning column for positioning the diaphragm is arranged in the molding cavity; the inlet direction of the air guide channel is consistent with the opening direction of the molding cavity.

7. The high-pressure gas forming mold according to claim 1, characterized in that: The cover plate covering part is a metal structure.

8. A high-pressure gas forming mold, comprising an infrared heater and an upper mold for providing high-pressure gas, characterized in that: It includes a high-pressure gas forming mold as described in any one of claims 2 to 7, wherein the upper mold is located on the upper side of the high-pressure gas forming mold, and the infrared heater can move between the high-pressure gas forming mold and the upper mold; the upper mold has an outlet connected to the inlet of the air guide channel of the high-pressure gas forming mold.

9. The high-pressure gas forming mold according to claim 8, characterized in that: The infrared heater can be pushed and pulled horizontally to enter between the high-pressure gas forming mold and the upper mold; the lower side of the upper mold is provided with an air distribution plate for docking with the inlets of each air guide channel on the high-pressure gas forming mold.

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