A new preformed structure of membrane material

Abstract

This utility model discloses a novel pre-forming structure for membrane materials, including a lower mold cavity assembly, an upper mold cavity assembly, a first power unit, and a second power unit. The lower mold cavity assembly includes a lower mold shell and a rectifier heating unit. The lower mold shell is provided with a first vacuum extraction hole, a first gas injection connection pipe, and a second gas injection connection pipe. The lower mold shell also has a first electrical interface electrically connected to the rectifier heating unit. The upper mold cavity assembly includes an upper mold shell with a second chamber and a mold head heating assembly disposed within the first chamber. The upper mold shell is provided with a second vacuum extraction hole communicating with the second chamber. The upper mold shell also has a second electrical interface electrically connected to the mold head heating assembly. The first power unit is driven to the upper mold shell; the second power unit is driven to the mold head heating assembly. This utility model's pre-forming structure for membrane materials offers a controllable environment: the closed cavity avoids dust contamination, making it suitable for products with high appearance requirements. The combination of vacuum adsorption and uniform air pressure extrusion significantly improves forming accuracy and thickness uniformity.

Description

Technical Field

[0001] This utility model relates to the field of mold material forming technology, specifically to a novel preform structure for membrane materials. Background Technology

[0002] Current VR glasses bonding processes typically involve directly bonding the product to the film material, lacking a pre-forming process before bonding. Existing molding structures are in a natural environment, without a closed cavity, and are directly formed by vacuum forming or stamping using molds.

[0003] Disadvantages of existing technology:

[0004] Poor production environment: The natural environment is easily contaminated by dust and foreign objects, making it difficult to meet the production needs of products with high appearance requirements.

[0005] Low forming accuracy: Without cavity constraints, the thickness uniformity of the film material is poor and the dimensional accuracy is insufficient during forming.

[0006] Low finished product yield: Environmental interference and process defects lead to a high product defect rate and increased production costs. Utility Model Content

[0007] To address the shortcomings of existing technologies, the present invention aims to provide a novel preformed structure for membrane materials.

[0008] To solve the above-mentioned technical problems, this utility model achieves the following solution: A novel membrane preform structure of this utility model includes:

[0009] The lower mold cavity assembly includes a lower mold shell having a first chamber and a rectifier heating part disposed in the first chamber. The lower mold shell is provided with a first vacuum extraction hole, a first gas injection connection pipe, and a second gas injection connection pipe, all of which are connected to the first chamber. The lower mold shell is also provided with a first electrical interface electrically connected to the rectifier heating part.

[0010] The upper mold cavity assembly includes an upper mold shell having a second chamber and a mold head heating assembly disposed in the first chamber. The upper mold shell is provided with a second vacuum extraction hole communicating with the second chamber, and the upper mold shell is also provided with a second electrical interface electrically connected to the mold head heating assembly.

[0011] A first power unit that is driven and connected to the upper mold shell and can drive the upper mold shell to perform lifting and lowering movements;

[0012] A second power unit that is connected to the mold head heating assembly and can drive the mold head heating assembly to perform lifting and lowering movements.

[0013] Furthermore, the rectifier heating section includes a rectifier section and a heating section, with the rectifier section located below the heating section.

[0014] Furthermore, the rectifier section includes:

[0015] The rectifier plate has a surface evenly covered with mesh holes.

[0016] The bottom supports are provided in multiple forms, and the multiple bottom supports are connected to the rectifier plate and fix the rectifier plate to the first chamber.

[0017] Furthermore, the heating element includes:

[0018] The mounting base is located above the rectifier plate and is connected to the rectifier plate through multiple adapter columns. The mounting base is provided with ventilation holes that pass through the upper and lower surfaces.

[0019] Multiple sets of ceramic heaters are distributed in a matrix on the mounting base;

[0020] A grid plate is connected to the mounting base by a mounting bracket, and the cavities of the grid plate separate multiple sets of the ceramic heaters.

[0021] Furthermore, a barometer for measuring the pressure of the first chamber is connected to the lower mold shell side.

[0022] Furthermore, the bottom of the lower mold shell is covered with a first lower sealing plate and a lower sealing plate sealing ring is provided at the connection point;

[0023] The lower end of the lower mold shell is connected to at least one set of temperature sensing devices, which include:

[0024] A viewing window with a flange mounting structure is mounted on a lower sealing plate, and a first sealing ring is provided at the connection between the viewing window and the lower sealing plate.

[0025] An infrared temperature sensor is installed on the lower cover plate. The infrared light of the infrared temperature sensor is directed toward the viewing window. The infrared temperature sensor can detect the surface temperature of the membrane material through the viewing window.

[0026] Furthermore, multiple buffer columns with buffer structures are installed on the lower mold shell side.

[0027] Furthermore, the outer surface of the upper sealing plate of the lower mold shell is provided with a first opening that communicates with the first chamber. The outer edge of the first opening is provided with a second sealing ring, and multiple suction cups are distributed in a ring array around the outer opening of the first opening.

[0028] Furthermore, the bottom of the upper mold shell is a lower sealing plate, and the lower sealing plate is provided with a second opening. Around the outer opening of the second opening, multiple suction nozzles are distributed in a ring array.

[0029] The die head heating assembly includes:

[0030] The mounting plate is located in the second chamber and is connected to the drive shaft of the second power unit via a connecting column;

[0031] A heating plate is fixed to the lower surface of the mounting plate;

[0032] The heating element is provided in multiple forms, which are evenly distributed within the heating plate.

[0033] The mold head is fixed to the lower surface of the heating plate, and the lifting path of the mold head can pass through the second opening.

[0034] Furthermore, the heating plate is equipped with a temperature sensor, which is connected to a temperature sensing wire;

[0035] A vacuum gauge for measuring the vacuum level of the second chamber is connected to the upper mold shell side.

[0036] Compared with the prior art, the beneficial effects of this utility model are:

[0037] 1. The pre-formed membrane structure of this utility model has a controllable environment: the closed cavity avoids dust pollution and is suitable for products with high appearance requirements.

[0038] 2. Improved precision of the preformed membrane structure of this utility model: The combination of vacuum adsorption and uniform air pressure extrusion significantly improves the forming precision and thickness uniformity.

[0039] 3. The preformed structure yield of the membrane material of this utility model is optimized: precise temperature control and stable process reduce the defect rate, improve the structural yield, and reduce production costs. Attached Figure Description

[0040] Figure 1 This is a side view of the preformed membrane structure of this utility model.

[0041] Figure 2 This is a structural diagram of the lower mold cavity assembly of this utility model.

[0042] Figure 3 This is a structural diagram of the rectifier heating section of this utility model.

[0043] Figure 4 This is a structural diagram of the upper mold cavity assembly of this utility model.

[0044] The attached diagram shows the following components: 1. Upper sealing plate; 2. Suction cup; 3. Membrane material; 4. Second sealing ring; 5. Rectifying heating section; 6. First vacuum extraction port; 7. Square box body; 8. No. 1 gas injection connection pipe; 9. Buffer column; 10. Lower sealing plate sealing ring; 11. Lower sealing plate; 12. Infrared temperature sensor; 13. Viewing window; 14. First sealing ring; 15. No. 2 gas injection connection pipe; 16. Barometer; 17. Upper sealing plate sealing ring; 18. First flange seat sealing ring; 19. First flange seat; 20. First electrode flange; 21. Ceramic heater; 22. Grid plate; 23. Mounting component; 24. Mounting base; 25. Adapter column; 26. ... Flow plate 26, bottom column 27, second flange seat sealing ring 28, second electrode flange 29, second flange seat 30, second vacuum extraction hole 31, vacuum gauge 32, blind flange sealing ring 33, blind flange 34, middle frame shell 35, lower sealing plate sealing ring 36, connecting column 37, mounting plate 38, second lower sealing plate 39, temperature sensing wire 40, suction nozzle 42, mold head 43, heating plate 44, heating tube 45, viewing window flange 46, viewing window flange sealing ring 47, lower mold cavity assembly 100, upper mold cavity assembly 200, first power unit 300, second power unit 400. Detailed Implementation

[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present utility model. Obviously, the embodiments described in this utility model are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0046] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0047] Example 1: The specific structure of this utility model is as follows:

[0048] Please refer to the appendix. Figure 1-4 The present invention provides a novel preform structure for membrane materials, comprising a lower mold cavity assembly 100, an upper mold cavity assembly 200, a first power unit 300, and a second power unit 400.

[0049] The lower mold cavity assembly 100 includes a lower mold shell with a first chamber and a rectifier heating part 5 disposed within the first chamber. The lower mold shell is respectively provided with a first vacuum extraction hole 6, a first gas injection connection pipe 8, and a second gas injection connection pipe 15, all communicating with the first chamber. The lower mold shell is also provided with a first electrical interface electrically connected to the rectifier heating part 5. The lower mold shell includes a square box body 7 composed of four side plates. The upper and lower openings of the square box body 7 are covered by an upper sealing plate 1, and an upper sealing plate sealing ring 17 is provided at the cover joint to achieve a seal. The lower opening of the upper sealing plate sealing ring 17 is covered by a lower sealing plate 11, and a lower sealing plate sealing ring 10 is provided at the cover joint to achieve a seal. The first electrical interface is a first electrode flange 20, which is fixed to the side of the square box body 7 by a first flange seat 19. Specifically, a first flange seat sealing ring 18 is provided at the connection between the first flange seat 19 and the square box body 7.

[0050] The upper mold cavity assembly 200 includes an upper mold shell having a second chamber and a mold head heating assembly disposed in the first chamber. The upper mold shell is provided with a second vacuum extraction hole 31 communicating with the second chamber. The upper mold shell is also provided with a second electrical interface electrically connected to the mold head heating assembly. The second electrical interface is a second electrode flange 29, which is fixed to the side of the upper mold shell by a second flange seat 30. A second flange seat sealing ring 28 is provided at the connection between the second flange seat 30 and the upper mold shell.

[0051] A blind flange 34 is installed on the first side of the upper mold shell, and a blind flange sealing ring 33 is provided at the connection between the blind flange 34 and the first side.

[0052] A viewing flange 46 is mounted on the second side of the upper mold shell, and a viewing flange sealing ring 47 is provided at the connection between the viewing flange 46 and the second side. The function of the viewing flange 46 is to allow visibility into the interior of the second chamber. The first and second sides are arranged opposite to each other.

[0053] The first power unit 300 is driven to the upper mold shell and can drive the upper mold shell to perform lifting and lowering movements. The power source of the first power unit 300 is a first motor, which drives the upper mold shell to lift and lower.

[0054] The second power unit 400 is connected to the mold head heating assembly and can drive the mold head heating assembly to move up and down. The power source of the second power unit 400 is a second motor, which drives the mold head heating assembly to move up and down.

[0055] The rectifier heating unit 5 includes a rectifier and a heating unit, with the rectifier disposed below the heating unit.

[0056] The rectifier section includes:

[0057] The rectifier plate 26 has a surface evenly covered with mesh holes. The rectifier plate 26 is a plate used to sort and adjust the airflow pattern. Its main function is to optimize the airflow state, reduce turbulence, eddies or airflow disturbances, and make the airflow more uniform.

[0058] Multiple bottom supports 27 are provided, and the multiple bottom supports 27 are connected to the rectifier plate 26 and fix the rectifier plate 26 to the first chamber. There are 4 bottom supports 27, which are located at the four corners of the rectifier plate 26 and are used to support the rectifier plate 26.

[0059] The heating element includes:

[0060] A mounting base 24 is positioned above the rectifier plate 26 and connected to the rectifier plate 26 via multiple adapter posts 25. The mounting base 24 is provided with ventilation holes penetrating its upper and lower surfaces. Figure 3 As shown, the vent has six zones;

[0061] Multiple sets of ceramic heaters 21 are arranged in a matrix on the mounting base 24; a ceramic heater is a heating device that uses ceramic material as a substrate or heating element, and has the characteristics of high temperature resistance, good insulation, high thermal efficiency, and strong safety; such as Figure 3 As shown, the ceramic heater 21 has six sets, corresponding to six vent areas;

[0062] The grid plate 22 is connected to the mounting base 24 via mounting members 23, and the cavities of the grid plate 22 separate the multiple sets of ceramic heaters 21, such as... Figure 3 As shown, the grid plate 22 has six compartments, and the six compartments and six sets of ceramic heaters 21 are arranged one-to-one. The six compartments separate the six sets of ceramic heaters 21, so that each set of ceramic heaters 21 forms a separate area.

[0063] A barometer 16 for measuring the pressure of the first chamber is connected to the lower mold shell side, and the barometer 16 detects the air pressure of the first chamber in real time.

[0064] The bottom of the lower mold shell is covered by a first lower sealing plate 11 and a lower sealing plate sealing ring 10 is provided at the connection.

[0065] The lower end of the lower mold shell is connected to at least one set of temperature sensing devices, which include:

[0066] A viewing window 13 with a flange mounting structure is mounted on a lower sealing plate 11, and a first sealing ring 14 is provided at the connection between the viewing window 13 and the lower sealing plate 11.

[0067] An infrared temperature sensor 12 is installed on the lower sealing plate 11. The infrared light of the infrared temperature sensor 12 is directed toward the viewing window 13. The infrared temperature sensor 12 can detect the surface temperature of the membrane material 3 through the viewing window 13, thereby achieving precise heating of the membrane material 3.

[0068] The lower end of the lower mold shell is connected to at least one set of temperature sensing devices, which include:

[0069] A viewing window 13 with a flange mounting structure is installed at the lower port of the lower mold shell and a first sealing ring 14 is provided at the connection.

[0070] Multiple buffer columns with buffer structures are installed on the lower mold shell side.

[0071] The outer surface of the upper sealing plate 1 of the lower mold shell is provided with a first opening that communicates with the first chamber. The outer edge of the first opening is provided with a second sealing ring 4. Multiple suction cups 2 are distributed in a ring array around the outer opening of the first opening.

[0072] The bottom of the upper mold shell is a second lower sealing plate 39. The second lower sealing plate 39 is provided with a second opening. Around the outer opening of the second opening, a plurality of suction nozzles 42 are distributed in a ring array. The second lower sealing plate 39 covers the bottom opening of the middle frame shell 35 of the upper mold shell, and a lower sealing plate sealing ring 36 is provided between the second lower sealing plate 39 and the bottom opening of the middle frame shell 35.

[0073] The die head heating assembly includes:

[0074] Mounting plate 38 is disposed in the second chamber and is connected to the drive shaft of the second power unit 400 via connecting column 37;

[0075] Heating plate 44 is fixed to the lower surface of mounting plate 38;

[0076] Multiple heating tubes 45 are provided, and the multiple heating tubes 45 are evenly distributed within the heating plate 44;

[0077] The mold head 43 is fixed to the lower surface of the heating plate 44, and the lifting path of the mold head 43 can pass through the second opening.

[0078] The heating plate 44 is equipped with a temperature sensor, which is connected to a temperature sensing wire 40; the temperature sensor detects the temperature of the heating plate 44 in real time.

[0079] The upper mold shell side is connected to a vacuum gauge 32 for measuring the vacuum level of the second chamber. The vacuum gauge 32 is used to detect the vacuum level in the second chamber in real time.

[0080] Example 2:

[0081] The following is the working principle of the membrane preform structure of this utility model:

[0082] When this novel preformed membrane structure is in operation, the membrane material 3 is first fixed by a suction cup, and the first power unit drives the upper mold shell to descend, so that the upper and lower mold shells close to form a closed cavity.

[0083] The second and first vacuum evacuation ports are used to evacuate the second and first chambers, respectively, and a vacuum gauge monitors the vacuum level in the second chamber. The membrane surface is kept level based on the negative pressure values ​​of the first and second chambers, ensuring that the pressure in the second chamber plus the weight of the membrane equals the pressure in the first chamber.

[0084] The rectifier heating section of the lower mold cavity assembly (rectifier plate combs the airflow, ceramic heater heats) preheats the film material, while an infrared temperature sensor monitors the film material temperature.

[0085] Once the membrane material reaches the required temperature, the first chamber is pressurized, and the pressure is monitored by a barometer. At the same time, the second power unit drives the mold head heating assembly (mold head, heating tube, heating plate) to descend, and the mold head applies pressure to the membrane material 3 to complete precise forming.

[0086] After the membrane material 3 is formed, the second chamber is kept under vacuum and the first chamber is depressurized. Under the action of negative pressure, the formed membrane material adheres to the mold head and maintains the formed state. At the same time, the suction nozzle adsorbs the membrane material, and the first power unit drives the upper mold shell to rise. The formed membrane material 3 is adsorbed on the mold head and rises together.

[0087] The entire process uses a closed cavity to control the environment, combining vacuum adsorption, uniform air pressure extrusion, and precise temperature control to improve the accuracy and yield of membrane forming.

[0088] In summary, the pre-formed membrane structure of this utility model has a controllable environment: the closed cavity avoids dust pollution and is suitable for products with high appearance requirements.

[0089] This invention improves the precision of the preformed membrane structure: the combination of vacuum adsorption and uniform air pressure extrusion significantly improves the forming precision and thickness uniformity.

[0090] This invention optimizes the yield of preformed membrane structures: precise temperature control and stable processes reduce defect rates, improve equipment yield, and lower production costs.

[0091] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A novel membrane preform structure, characterized in that, include: The lower mold cavity assembly (100) includes a lower mold shell having a first chamber and a rectifier heating part (5) disposed in the first chamber. The lower mold shell is provided with a first vacuum extraction hole (6), a first gas injection connection pipe (8), and a second gas injection connection pipe (15), all of which are connected to the first chamber. The lower mold shell is also provided with a first electrical interface electrically connected to the rectifier heating part (5). The upper mold cavity assembly (200) includes an upper mold shell having a second chamber and a mold head heating assembly disposed in the first chamber. The upper mold shell is provided with a second vacuum extraction hole (31) communicating with the second chamber. The upper mold shell is also provided with a second electrical interface electrically connected to the mold head heating assembly. A first power unit (300) is driven to connect to the upper mold shell and is capable of driving the upper mold shell to perform lifting and lowering movements; A second power unit (400) is driven to and connected to the mold head heating assembly and is capable of driving the mold head heating assembly to perform lifting and lowering movements.

2. The novel membrane preform structure according to claim 1, characterized in that, The rectifier heating section (5) includes a rectifier section and a heating section, with the rectifier section located below the heating section.

3. The novel membrane preform structure according to claim 2, characterized in that, The rectifier section includes: The rectifier plate (26) has a uniform mesh covering its surface; The bottom column (27) is provided in multiple ways. The multiple bottom columns (27) are connected to the rectifier plate (26) and fix the rectifier plate (26) to the first chamber.

4. The novel membrane preform structure according to claim 3, characterized in that, The heating element includes: The mounting base (24) is located above the rectifier plate (26) and is connected to the rectifier plate (26) through multiple adapter columns (25). The mounting base (24) is provided with ventilation holes that pass through the upper and lower surfaces. Multiple sets of ceramic heaters (21) are distributed in a matrix on the mounting base (24); A grid plate (22) is connected to the mounting base (24) by a mounting member (23), and the cavities of the grid plate (22) separate multiple sets of the ceramic heaters (21).

5. The novel membrane preform structure according to claim 1, characterized in that, A barometer (16) for measuring the pressure of the first chamber is connected to the lower mold shell side.

6. The novel membrane preform structure according to claim 1, characterized in that, The bottom of the lower mold shell is covered with a first lower sealing plate (11) and a lower sealing plate sealing ring (10) is provided at the connection. The lower end of the lower mold shell is connected to at least one set of temperature sensing devices, which include: A viewing window (13) with a flange mounting structure is mounted on a lower sealing plate (11), and a first sealing ring (14) is provided at the connection between the viewing window (13) and the lower sealing plate (11). An infrared temperature sensor (12) is installed on the lower cover plate (11). The infrared light of the infrared temperature sensor (12) is directed toward the viewing window (13). The infrared temperature sensor (12) can detect the surface temperature of the membrane material (3) through the viewing window (13).

7. The novel membrane preform structure according to claim 1, characterized in that, The lower mold shell side is equipped with multiple buffer columns (9) with buffer structures.

8. The novel membrane preform structure according to claim 1, characterized in that, The outer surface of the upper sealing plate (1) of the lower mold shell is provided with a first opening that communicates with the first chamber. The outer edge of the first opening is provided with a second sealing ring (4). Multiple suction cups (2) are arranged in a ring array around the outer opening of the first opening.

9. A novel membrane preform structure according to claim 1, characterized in that, The bottom of the upper mold shell is a second lower sealing plate (39), and the second lower sealing plate (39) is provided with a second opening. Around the outer opening of the second opening, multiple suction nozzles (42) are distributed in a ring array. The die head heating assembly includes: Mounting plate (38) is provided in the second chamber and is connected to the drive shaft of the second power unit (400) via connecting column (37); Heating plate (44) is fixed to the lower surface of the mounting plate (38); The heating tubes (45) are provided in multiple ways, and the multiple heating tubes (45) are evenly distributed in the heating plate (44); The mold head (43) is fixed to the lower surface of the heating plate (44), and the lifting path of the mold head (43) can pass through the second opening.

10. A novel membrane preform structure according to claim 9, characterized in that, The heating plate (44) is equipped with a temperature sensor, which is connected to a temperature sensing wire (40); A vacuum gauge (32) for measuring the vacuum level of the second chamber is connected to the upper mold shell side.

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