Multi-point array distributed pressure honeycomb panel double-curved surface forming device

Abstract

The application discloses a kind of multi-point array distributed pressure honeycomb panel hyperboloid forming equipment, it is related to honeycomb plate forming technical field, the outer wall upper side of the rack is provided with mounting table, the outer wall upper side of the mounting table is provided with mounting plate, the outer wall lower side of the mounting plate is provided with hot-pressing unit, the hot-pressing unit is arrayed, the outer wall lower side of the mounting plate is provided with compensation unit, and the compensation unit is located in the clearance center enclosed by every 4 hot-pressing units.The application is pressed by the hot-pressing unit of arrayed arrangement to honeycomb plate, and the first heating rod for central heating and the second heating rod for edge heating are arranged in the hot-pressing unit, and the pressure and heat are evenly dispersed to the surface of honeycomb plate by the first elastomer, the second elastomer and the third elastomer with gradually reduced shore hardness, and the hyperboloid modeling and adhesive film curing of honeycomb plate can be completed simultaneously.

Description

Technical Field

[0001] This invention relates to the field of honeycomb panel molding technology, specifically to a multi-point distributed pressure honeycomb panel hyperboloid molding equipment. Background Technology

[0002] Honeycomb sandwich panels, with their significant advantages of being lightweight, high-strength, sound-insulating, heat-insulating, and having high specific stiffness, are widely used in building decoration curtain walls, rail transit interiors, and ship interiors. The industrial molding of hyperboloid honeycomb panels is mainly divided into molded molding and moldless multi-point molding. Moldless multi-point molding adjusts the height of the target curved surface by arranging independent pressure heads in an array, eliminating the need for physical molds. Changes only require modification of CNC parameters, which greatly shortens the production cycle of customized products. Existing multi-point pressure heads mostly use rigid metal end faces or single-layer homogeneous buffer pads, with the load height concentrated in the area directly below the pressure head. However, the honeycomb core is a thin-walled hexagonal lattice structure, which has a weak ability to resist local concentrated loads. Local high pressure can lead to irreversible damage such as node cracking. The hyperboloid molding of honeycomb panels mostly needs to be completed under hot conditions to improve the plasticity of the material. Existing pressure heads mostly use overall heating or are equipped with ovens for full-area heating, which cannot perform differentiated temperature control according to the curvature requirements of different areas of the surface, and cannot balance the requirements of finished product molding accuracy and structural performance.

[0003] Therefore, this application proposes a hyperboloid forming device for multi-point distributed pressure honeycomb panels with uniform and stable pressing. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-point distributed pressure honeycomb panel hyperboloid forming device to solve the technical problems mentioned in the background art, namely, the inability to balance accuracy and performance requirements due to concentrated load and overall heating.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-point array distributed pressure honeycomb panel hyperboloid forming device, comprising a frame, a mounting plate, a mounting platform, and hot pressing units. The mounting platform is disposed on the upper side of the outer wall of the frame, the mounting plate is disposed on the upper side of the outer wall of the mounting platform, and hot pressing units are disposed on the lower side of the outer wall of the mounting plate. The hot pressing units are arranged in an array. A compensation unit is disposed on the lower side of the outer wall of the mounting plate, the compensation unit being located at the center of the gap enclosed by every four hot pressing units. A pressing unit is disposed at the connection between the hot pressing unit and the mounting plate. A support unit is disposed on the upper side of the outer wall of the mounting platform, the support unit corresponding one-to-one with the hot pressing unit. A positioning unit is disposed on the upper side of the outer wall of the mounting platform, and a control console is disposed on the left side of the outer wall of the frame.

[0006] Preferably, a heat-conducting column is provided on the lower side of the outer wall of the mounting plate, a first heating rod is provided in the middle of the inner wall of the heat-conducting column, a heat-conducting shell is fitted on the outer wall of the heat-conducting column, a second heating rod is provided inside the heat-conducting shell, a heat insulation ring is provided between the heat-conducting shell and the heat-conducting column, a heat-conducting plate is provided on the lower end face of the heat-conducting shell, a pressure-bearing base is provided on the lower side of the outer wall of the heat-conducting shell, a nesting groove is provided on the lower side of the outer wall of the pressure-bearing base, a first elastic body, a second elastic body and a third elastic body are arranged sequentially from the inside to the outside inside the nesting groove, a pressure plate is provided on the lower end face of the pressure-bearing base, and both the first heating rod and the second heating rod are electrically connected to the control console.

[0007] Preferably, a mounting base is provided on the lower side of the outer wall of the mounting plate, an adjusting screw is provided on the upper side of the outer wall of the mounting base, a first locking nut is fitted on the outer wall of the adjusting screw, a guide sleeve is provided on the lower side of the outer wall of the mounting base, a first limiting block is provided on the lower side of the inner wall of the guide sleeve, a floating rod is provided inside the guide sleeve, a second limiting block is provided on the upper end face of the floating rod, a compensating spring is provided on the upper side of the outer wall of the second limiting block, the two ends of the compensating spring are respectively connected to the second limiting block and the mounting base, a heat-conducting pressure head is provided on the lower end face of the floating rod, a third heating rod is provided inside the heat-conducting pressure head, the third heating rod is electrically connected to the control console, and a first universal seat is provided at the connection between the heat-conducting pressure head and the floating rod.

[0008] Preferably, a downward pressure motor is provided on the upper side of the outer wall of the mounting plate. The downward pressure motor is connected to the control console via a power supply line. An electric push rod is provided at the output end of the downward pressure motor. A hinge seat is provided on the lower end face of the electric push rod. The lower part of the hinge seat is a spherical part. A hinge sleeve is provided on the lower side of the outer wall of the hinge seat. The hinge sleeve is provided with a spherical groove that rotates with the spherical part of the hinge seat. Four sets of return springs are evenly arranged circumferentially between the hinge seat and the hinge sleeve. The two ends of the return springs are connected to the hinge seat and the hinge sleeve respectively. A retaining ring is sleeved on the outer wall of the hinge seat. A first stop block is sleeved on the outer wall of the hinge sleeve. The retaining ring cooperates with the first stop block. A heat insulation seat is provided on the lower side of the outer wall of the hinge sleeve. The heat insulation seat is used to connect the hot pressing unit and the hinge sleeve.

[0009] Preferably, a support plate is provided on the upper side of the outer wall of the mounting platform, a support screw is provided on the upper side of the outer wall of the support plate, a second universal seat is provided on the upper side of the outer wall of the support screw, a buffer cap is fitted on the outer wall of the second universal seat, and a second locking nut is provided in the middle of the outer wall of the support screw.

[0010] Preferably, a second stop is provided on both the front and rear sides of the outer wall of the mounting platform, and a third stop is provided on both the left and right sides of the outer wall of the mounting platform. The second and third stops are movably connected to the mounting platform via screws.

[0011] Preferably, both the pressure plate and the heat-conducting pressure head are equipped with temperature sensors, and the temperature sensors are connected to the control console via signal lines.

[0012] Preferably, displacement sensors are embedded in the outer walls of both the floating rod and the electric push rod, and the displacement sensors are connected to the control console via signal lines.

[0013] Preferably, protective covers are provided on both the left and right sides of the outer wall of the frame, and the protective covers are detachably connected to the frame by locking clips.

[0014] Preferably, the Shore hardness of the first elastomer, the second elastomer, and the third elastomer decreases progressively, and a heat insulation ring is provided between the first elastomer, the second elastomer, and the third elastomer.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention uses arrayed hot-pressing units to press honeycomb panels together. Each hot-pressing unit is equipped with a first heating rod for central heating and a second heating rod for edge heating. Pressure and heat are evenly distributed to the surface of the honeycomb panel through a first, second, and third elastomer with progressively decreasing Shore hardness. This allows for simultaneous completion of the hyperboloid shaping and film curing of the honeycomb panel, achieving uniform and stable pressing. This solves the problem of defects in the finished honeycomb panel caused by concentrated pressure and temperature during pressing. 2. This invention sets one compensation unit at the center of every four hot-pressing units, so that the honeycomb plate protruding under the pressure of the hot-pressing unit contacts the compensation unit. The compensation spring provides pre-pressure, so that the heat-conducting pressure head is always in contact with the honeycomb plate. The third heating rod provides heat to the blind area under the pressure of the hot-pressing unit. At the same time, it can adapt to the gap protrusion under different curvatures of the honeycomb plate surface, realize the function of eliminating the pressing blind area, and solve the problems of honeycomb core collapse caused by gaps in the dot matrix setting and insufficient wetting of the adhesive film without pressure. 3. By setting a hinge seat and a hinge sleeve between the electric push rod and the hot pressing unit, the return spring is stretched and compressed when the hot pressing unit contacts the inclined area of ​​the honeycomb panel surface, causing the hot pressing unit to deflect. This ensures that the temperature and pressure applied by the hot pressing unit are evenly distributed on the honeycomb panel surface, realizing the function of adapting to non-planar working conditions, avoiding direct contact between the inclined area of ​​the honeycomb panel and the vertical pressure plate, and solving the problems of local stress surge and uneven heating. 4. This invention adjusts the height of the support unit to adapt the support unit array to the contour of the hyperboloid of the honeycomb panel, providing back support for the honeycomb panel during the pressing process of the hot pressing unit. At the same time, the buffer cap, under the action of the second universal seat, can fit the lower curved surface of the honeycomb panel, transforming the shear force of the honeycomb core into surface pressure force, thereby optimizing the stress state of the honeycomb panel and solving the problems of large springback and poor contour accuracy after the honeycomb panel is formed. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a schematic diagram of the distribution structure of the hot pressing unit and the compensation unit of the present invention; Figure 3 This is a schematic diagram of the hot-pressing unit structure of the present invention; Figure 4 This is a schematic diagram of the compensation unit structure of the present invention; Figure 5 This is a schematic diagram of the distribution structure of the pressure unit of the present invention; Figure 6 This is a schematic diagram of the pressing unit structure of the present invention; Figure 7 This is a schematic diagram of the support unit structure of the present invention; Figure 8 This is a schematic diagram of the positioning unit structure of the present invention.

[0017] In the diagram: 1. Frame; 2. Mounting plate; 3. Mounting platform; 4. Hot pressing unit; 401. Heat-conducting column; 402. First heating rod; 403. Heat-conducting shell; 404. Second heating rod; 405. Heat insulation ring; 406. Heat-conducting plate; 407. Pressure-bearing base; 408. Nesting groove; 409. First elastic body; 410. Second elastic body; 411. Third elastic body; 412. Pressure plate; 5. Compensation unit; 501. Mounting base; 502. Adjusting screw; 503. First locking nut; 504. Guide sleeve; 505. First limiting block; 506. Floating rod; 507. Second limiting block; 508. Compensating spring; 509. Heat-conducting pressure head; 510. Third heating rod; 511. First universal joint; 6. Pressing unit; 601. Pressing motor; 602. Electric push rod; 603. Hinge seat; 604. Hinge sleeve; 605. Return spring; 606. Retaining ring; 607. First stop block; 608. Heat insulation seat; 7. Support unit; 701. Support plate; 702. Support screw; 703. Second universal joint; 704. Buffer cap; 705. Second locking nut; 8. Positioning unit; 801. Second stop block; 802. Third stop block; 803. Lead screw; 9. Control console; 10. Temperature sensor; 11. Displacement sensor; 12. Protective cover; 13. Locking clamp; 14. Heat insulation ring. Detailed Implementation

[0018] Example 1: Please refer to Figure 1 , Figure 2 and Figure 3A multi-point array distributed pressure honeycomb panel hyperboloid forming device includes a frame 1, a mounting plate 2, a mounting platform 3, and hot pressing units 4. The mounting platform 3 is provided on the upper side of the outer wall of the frame 1, the mounting plate 2 is provided on the upper side of the outer wall of the mounting platform 3, and the hot pressing units 4 are provided on the lower side of the outer wall of the mounting plate 2. The hot pressing units 4 are distributed in an array. The compensation unit 5 is provided on the lower side of the outer wall of the mounting plate 2. The compensation unit 5 is located at the center of the gap enclosed by every 4 hot pressing units 4. The pressing unit 6 is provided at the connection between the hot pressing unit 4 and the mounting plate 2. The support unit 7 is provided on the upper side of the outer wall of the mounting platform 3. The support unit 7 corresponds one-to-one with the hot pressing unit 4. The positioning unit 8 is provided on the upper side of the outer wall of the mounting platform 3. The control console 9 is provided on the left side of the outer wall of the frame 1. A heat-conducting column 401 is provided on the lower side of the outer wall of the mounting plate 2. A first heating rod 402 is provided in the middle of the inner wall of the heat-conducting column 401. A heat-conducting shell 403 is fitted on the outer wall of the heat-conducting column 401. A second heating rod 404 is provided inside the heat-conducting shell 403. A heat insulation ring 405 is provided between the heat-conducting shell 403 and the heat-conducting column 401. A heat-conducting plate 406 is provided on the lower end face of the heat-conducting shell 403. A pressure-bearing base 407 is provided on the lower side of the outer wall of the heat-conducting shell 403. A nesting groove 408 is provided on the lower side of the outer wall of the pressure-bearing base 407. A first elastic body 409, a second elastic body 410 and a third elastic body 411 are arranged sequentially from the inside to the outside inside the nesting groove 408. A pressure plate 412 is provided on the lower end face of the pressure-bearing base 407. The first heating rod 402 and the second heating rod 404 are both electrically connected to the control console 9. Both the pressure plate 412 and the heat-conducting pressure head 509 are equipped with temperature sensors 10, and the temperature sensors 10 are connected to the control console 9 through signal lines. The Shore hardness of the first elastomer 409, the second elastomer 410 and the third elastomer 411 decreases step by step, and a heat insulation ring 14 is provided between the first elastomer 409, the second elastomer 410 and the third elastomer 411. Furthermore, based on the hyperboloid digital model of the honeycomb panel, the operator inputs the target pressing stroke of each hot pressing unit 4 through the control console 9. Simultaneously, according to the curvature of different areas of the surface, the target temperatures of the first heating rod 402 and the second heating rod 404 are set. At the start of processing, the pressing unit 6 controls all hot pressing units 4 to move downwards simultaneously. After the pressure plate 412 contacts the skin on the honeycomb panel, it continues to press down to the preset stroke, completing the contour envelope of the honeycomb panel's curved surface. During the pressing process, the downward pressure is transmitted through the pressure base 407 to the three layers of elastic bodies within the nesting groove 408. The Shore hardness of the first elastic body 409, the second elastic body 410, and the third elastic body 411... As the pressure gradually decreases, the first elastic body 409, located in the inner ring, preferentially transmits the main forming load. The second elastic body 410 and the third elastic body 411 gradually generate greater elastic deformation as the pressure increases, spreading the point load concentrated on the axis radially into a uniformly distributed surface load. The load is further homogenized by the pressure plate 412. After the hot pressing unit 4 is pressed down to the target stroke, the control console 9 controls the first heating rod 402 and the second heating rod 404 to heat up according to the preset temperature. After the temperature sensor 10 on the pressure plate 412 detects that the end face temperature of the hot pressing unit 4 has reached the preset value, the control console 9 switches the first heating rod 402 and the second heating rod 404 to heat preservation. In this mode, the heat from the first heating rod 402 is transferred along the heat-conducting column 401 to the center region of the end face of the hot-pressing unit 4, and the heat from the second heating rod 404 is transferred along the heat-conducting shell 403 to the annular region of the edge of the end face of the hot-pressing unit 4. The heat insulation ring 405 and the heat insulation ring 14 block thermal crosstalk during heat conduction, ensuring that the temperature of the center region and the edge region of the hot-pressing unit 4 is independently controlled. The heat from the hot-pressing unit 4 is transferred downward through the heat-conducting plate 406, and finally evenly diffused to the skin surface of the honeycomb plate through the pressure plate 412. For areas with large curvature, the control console 9 controls the first heating rod 402 and the second heating rod 404 to heat synchronously, improving the temperature of the hot-pressing unit in that area. The overall temperature of 4 enhances the plasticity of the skin. For flat areas, the control console 9 only controls the first heating rod 402 to reduce the edge heat load and avoid overheating and aging of the honeycomb core. At the same time, by adding thermally conductive pads on the upper and lower sides of the first elastomer 409, the second elastomer 410 and the third elastomer 411, the interfacial contact thermal resistance during the downward heat transfer process is reduced, and the heat transfer fluctuation caused by pressure changes is reduced. After the pressure holding and curing are completed, the control console 9 controls the first heating rod 402 and the second heating rod 404 to stop heating. After cooling to the set temperature, the hot pressing unit 4 is reset under the action of the pressing unit 6, and the staff takes out the finished honeycomb panel that has been processed.

[0019] Example 2: Please refer to Figure 1 , Figure 2 and Figure 4A multi-point array distributed pressure honeycomb panel hyperboloid forming device includes a frame 1, a mounting plate 2, a mounting platform 3, and hot pressing units 4. The mounting platform 3 is provided on the upper side of the outer wall of the frame 1, the mounting plate 2 is provided on the upper side of the outer wall of the mounting platform 3, and the hot pressing units 4 are provided on the lower side of the outer wall of the mounting plate 2. The hot pressing units 4 are distributed in an array. The compensation unit 5 is provided on the lower side of the outer wall of the mounting plate 2. The compensation unit 5 is located at the center of the gap enclosed by every 4 hot pressing units 4. The pressing unit 6 is provided at the connection between the hot pressing unit 4 and the mounting plate 2. The support unit 7 is provided on the upper side of the outer wall of the mounting platform 3. The support unit 7 corresponds one-to-one with the hot pressing unit 4. The positioning unit 8 is provided on the upper side of the outer wall of the mounting platform 3. The control console 9 is provided on the left side of the outer wall of the frame 1. A mounting base 501 is provided on the lower side of the outer wall of the mounting plate 2. An adjusting screw 502 is provided on the upper side of the outer wall of the mounting base 501. A first locking nut 503 is fitted on the outer wall of the adjusting screw 502. A guide sleeve 504 is provided on the lower side of the outer wall of the mounting base 501. A first limiting block 505 is provided on the lower side of the inner wall of the guide sleeve 504. A floating rod 506 is provided inside the guide sleeve 504. A second limiting block 507 is provided on the upper end face of the floating rod 506. A compensation spring 508 is provided on the upper side of the outer wall of the second limiting block 507. The two ends of the compensation spring 508 are respectively connected to the second limiting block 507 and the mounting base 501. A heat-conducting pressure head 509 is provided on the lower end face of the floating rod 506. A third heating rod 510 is provided inside the heat-conducting pressure head 509. The third heating rod 510 is electrically connected to the control console 9. A first universal seat 511 is provided at the connection between the heat-conducting pressure head 509 and the floating rod 506. Both the pressure plate 412 and the heat-conducting pressure head 509 are equipped with temperature sensors 10, and the temperature sensors 10 are connected to the control console 9 through signal lines. The outer walls of the floating rod 506 and the electric push rod 602 are both equipped with displacement sensors 11, and the displacement sensors 11 are connected to the control console 9 through signal lines. Further, before processing, the operator loosens the first locking nut 503 and rotates the adjusting screw 502 to adjust the height of the compensation unit 5, so that the height of the heat-conducting pressure head 509 is lower than the pressure plate 412, forming the design pre-extension amount to match the maximum downward stroke of the hot pressing unit 4. After height calibration, the first locking nut 503 is tightened to axially lock the adjusting screw 502 to the mounting plate 2, preventing loosening due to reaction force during processing. At this time, the compensation spring 508 is in a pre-compressed state, and the compensation spring 508 applies a downward elastic thrust to the floating rod 506, so that the lower end face of the second limiting block 507 contacts the upper end face of the first limiting block 505, and the floating rod... With rod 506 held at its initial lower limit position, as the pressing unit 6 drives the hot pressing unit 4 to move downwards synchronously, the initial position of the heat-conducting pressure head 509 is lower than that of the pressure plate 412. Therefore, the heat-conducting pressure head 509 contacts the skin on the honeycomb panel before the pressure plate 412. The preload of the compensating spring 508 is transmitted to the heat-conducting pressure head 509 through the floating rod 506, ensuring stable contact between the heat-conducting pressure head 509 and the skin on the honeycomb panel. If the compensating unit 5 is located in the inclined area of ​​the hyperboloid of the honeycomb panel, the first universal joint 511 can ensure stable contact between the heat-conducting pressure head 509 and the skin. As the pressure plate 412 moves downwards, the skin in the gap area enclosed by the four hot pressing units 4 bulges upwards due to peripheral compression. The raised honeycomb plate generates an upward reaction force on the heat-conducting pressure head 509, causing the floating rod 506 to slide upward along the inner wall of the guide sleeve 504. The second limiting block 507 compresses the compensation spring 508 upward. During the downward pressing process of the hot pressing unit 4, the displacement sensor 11 collects the compression displacement of the floating rod 506. After the hot pressing unit 4 presses down to the target stroke, the control console 9 controls the third heating rod 510 to start. The temperature sensor 10 at the heat-conducting pressure head 509 collects the temperature of the lower end face of the heat-conducting pressure head 509. When the set temperature is reached, the third heating rod 510 is switched to the heat preservation mode. The heat of the third heating rod 510 is transferred to the honeycomb plate by the heat-conducting pressure head 509. The skin on the plate provides supplemental heating to the gap area enclosed by the hot pressing unit 4. During the pressure holding and curing stage, the hot pressing unit 4 provides the main forming pressure for the honeycomb panel, and the compensation unit 5 provides auxiliary pressure for the gap area. This ensures that the adhesive film between the upper skin and the honeycomb core at the gap position can obtain sufficient pressure, while also ensuring that the adhesive film at the gap position reaches the curing temperature, thus avoiding localized insufficient curing of the honeycomb panel. After the pressure holding and curing is completed, the lower pressing unit 6 drives the hot pressing unit 4 to reset, the honeycomb panel protrusion disappears, the heat-conducting pressure head 509 loses its upward thrust, the compensation spring 508 rebounds, causing the floating rod 506 to reset downward, and the second limiting block 507 re-engages with the first limiting block 505.

[0020] Example 3: Please refer to Figure 1 , Figure 2 , Figure 5 and Figure 6A multi-point array distributed pressure honeycomb panel hyperboloid forming device includes a frame 1, a mounting plate 2, a mounting platform 3, and hot pressing units 4. The mounting platform 3 is provided on the upper side of the outer wall of the frame 1, the mounting plate 2 is provided on the upper side of the outer wall of the mounting platform 3, and the hot pressing units 4 are provided on the lower side of the outer wall of the mounting plate 2. The hot pressing units 4 are distributed in an array. The compensation unit 5 is provided on the lower side of the outer wall of the mounting plate 2. The compensation unit 5 is located at the center of the gap enclosed by every 4 hot pressing units 4. The pressing unit 6 is provided at the connection between the hot pressing unit 4 and the mounting plate 2. The support unit 7 is provided on the upper side of the outer wall of the mounting platform 3. The support unit 7 corresponds one-to-one with the hot pressing unit 4. The positioning unit 8 is provided on the upper side of the outer wall of the mounting platform 3. The control console 9 is provided on the left side of the outer wall of the frame 1. A downward pressure motor 601 is installed on the upper side of the outer wall of the mounting plate 2. The downward pressure motor 601 is connected to the control console 9 via a power supply line. An electric push rod 602 is installed at the output end of the downward pressure motor 601. A hinge seat 603 is installed on the lower end face of the electric push rod 602. The lower part of the hinge seat 603 is a spherical part. A hinge sleeve 604 is installed on the lower side of the outer wall of the hinge seat 603. The hinge sleeve 604 is provided with a spherical groove that rotates with the spherical part of the hinge seat 603. Four sets of return springs 605 are evenly arranged circumferentially between the hinge sleeve 604 and the hinge base 603. The two ends of the return springs 605 are respectively connected to the hinge base 603 and the hinge sleeve 604. A retaining ring 606 is sleeved on the outer wall of the hinge base 603, and a first stop block 607 is sleeved on the outer wall of the hinge sleeve 604. The retaining ring 606 cooperates with the first stop block 607. A heat insulation seat 608 is provided on the lower side of the outer wall of the hinge sleeve 604. The heat insulation seat 608 is used to connect the hot pressing unit 4 and the hinge sleeve 604. The outer walls of the floating rod 506 and the electric push rod 602 are both equipped with displacement sensors 11, and the displacement sensors 11 are connected to the control console 9 through signal lines. Furthermore, before production begins, the elastic force provided by the four circumferentially evenly arranged sets of return springs 605 keeps the hinge sleeve 604 and the hinge seat 603 coaxial and centered. When the hot pressing unit 4 begins to press down, the control console 9 starts the pressing motor 601 to drive the electric push rod 602 downward. After the displacement sensor 11 at the electric push rod 602 detects that the corresponding hot pressing unit 4 has reached the target pressing stroke, the pressing motor 601 stops driving the electric push rod 602. When the pressure plate 412 contacts the inclined area of ​​the hyperboloid of the honeycomb panel, the honeycomb panel generates an inclined reaction force on the lower end face of the pressure plate 412. The deflection torque formed by this force overcomes the elastic force of the return springs 605 and drives the hinge sleeve 604 to passively deflect around the spherical hinge seat 603 until the lower end face of the pressure plate 412 is completely in contact with the surface of the honeycomb panel. During the deflection process, one side of the four circumferentially arranged sets of return springs 605 is stretched and the other side is compressed, providing continuous damping force to avoid deflection impact damage to the structure. When the deflection angle reaches When the upper limit is reached, the retaining ring 606 and the first stop 607 make axial contact, forming a rigid mechanical limit. After the pressure plate 412 is fully attached to the surface of the honeycomb panel, the hinge sleeve 604 maintains a stable deflection angle. The lower end face of the hot pressing unit 4 is subjected to uniform force, which can avoid local stress concentration and honeycomb core crushing caused by edge contact. At the same time, the heat transferred by the pressure plate 412 is evenly transferred to the honeycomb panel, and there will be no local overheating or insufficient heating, ensuring uniform curing of the adhesive film. The heat insulation seat 608 blocks the upward heat conduction of the hot pressing unit 4, preventing the high temperature from contacting the lower pressing unit 6. After the pressure holding and curing are completed, the control console 9 controls the lower pressing motor 601 to drive the electric push rod 602 to move upward, so that the hot pressing unit 4 is separated from the surface of the honeycomb panel. The deflection force applied to the pressure plate 412 in the inclined area of ​​the honeycomb panel disappears, the return spring 605 in the tension and compression state rebounds, the hinge sleeve 604 and the hinge seat 603 return to the initial coaxial centering state, and the retaining ring 606 and the first stop 607 return to the state of uniform gap.

[0021] Example 4: Please refer to Figure 1 , Figure 2 , Figure 7 and Figure 8 A multi-point array distributed pressure honeycomb panel hyperboloid forming device includes a frame 1, a mounting plate 2, a mounting platform 3, and hot pressing units 4. The mounting platform 3 is provided on the upper side of the outer wall of the frame 1, the mounting plate 2 is provided on the upper side of the outer wall of the mounting platform 3, and the hot pressing units 4 are provided on the lower side of the outer wall of the mounting plate 2. The hot pressing units 4 are distributed in an array. The compensation unit 5 is provided on the lower side of the outer wall of the mounting plate 2. The compensation unit 5 is located at the center of the gap enclosed by every 4 hot pressing units 4. The pressing unit 6 is provided at the connection between the hot pressing unit 4 and the mounting plate 2. The support unit 7 is provided on the upper side of the outer wall of the mounting platform 3. The support unit 7 corresponds one-to-one with the hot pressing unit 4. The positioning unit 8 is provided on the upper side of the outer wall of the mounting platform 3. The control console 9 is provided on the left side of the outer wall of the frame 1. A support plate 701 is provided on the upper side of the outer wall of the mounting platform 3. A support screw 702 is provided on the upper side of the outer wall of the support plate 701. A second universal seat 703 is provided on the upper side of the outer wall of the support screw 702. A buffer cap 704 is fitted on the outer wall of the second universal seat 703. A second locking nut 705 is provided in the middle of the outer wall of the support screw 702. The mounting platform 3 is provided with second blocks 801 on both the front and rear sides of its outer wall, and third blocks 802 on both the left and right sides of its outer wall. The second blocks 801 and the third blocks 802 are movably connected to the mounting platform 3 via screws 803. The frame 1 has protective covers 12 on both the left and right sides of its outer wall. The protective covers 12 are detachably connected to the frame 1 via locking clips 13. Further, before processing, the operator rotates the support screws 702 one by one according to the lower contour model of the hyperboloid of the honeycomb panel. Through the threaded pair with the support plate 701, the height of the support screws 702 is adjusted so that the upper end of the support unit 7 array covers the lower profile of the hyperboloid of the honeycomb panel. After the height is adjusted to the correct position, the second locking nut 705 is tightened to form a rigid support reference without displacement. According to the size of the honeycomb panel to be processed, the operator rotates the lead screw 803 to adjust the distance between the second stop 801 and the third stop 802 and the mounting table 3, so that the second stop 801 and the third stop 802 enclose a positioning area that matches the size of the honeycomb panel to be processed. After the adjustment is completed, the lead screw 803 is tightened to lock the position of the second stop 801 and the third stop 802. The honeycomb panel to be processed is then placed on the support unit 7 array, and the lower surface of the honeycomb panel is protected by the buffer cap 704. The second stop 801 and the third stop 802 provide support and provide planar positioning for the honeycomb panel. Then, the staff fixes the protective cover 12 to the left and right sides of the frame 1 with the locking clip 13 to reduce heat loss during processing. When the pressing unit 6 drives the hot pressing unit 4 to move downward and contact the honeycomb panel, some of the support units 7 contact the curved inclined area of ​​the lower surface of the honeycomb panel. The second universal seat 703 of this part of the support unit 7 is passively deflected under the reaction force of the honeycomb panel, so that the upper end face of the buffer cap 704 fits with the lower skin of the honeycomb panel, ensuring that the support force on the back of the honeycomb panel is uniform. The buffer cap 704 undergoes a slight elastic deformation during the pressing process to avoid indentation on the lower skin of the honeycomb panel. After the pressure holding and curing are completed, the hot pressing unit 4 is reset. The staff releases the constraint of the second stop 801 and the third stop 802 on the honeycomb panel by rotating the screw 803 and takes out the finished honeycomb panel.

[0022] Example 5: Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4A multi-point array distributed pressure honeycomb panel hyperboloid molding device is provided. The mounting plate 2 has a heat-conducting column 401 on the lower side of its outer wall, a first heating rod 402 in the middle of the inner wall of the heat-conducting column 401, a heat-conducting shell 403 fitted on the outer wall of the heat-conducting column 401, a second heating rod 404 inside the heat-conducting shell 403, a heat insulation ring 405 between the heat-conducting shell 403 and the heat-conducting column 401, a heat-conducting plate 406 on the lower end face of the heat-conducting shell 403, a pressure-bearing base 407 on the lower side of the outer wall of the heat-conducting shell 403, a nesting groove 408 on the lower side of the outer wall of the pressure-bearing base 407, a first elastic body 409, a second elastic body 410 and a third elastic body 411 arranged sequentially from the inside to the outside inside the nesting groove 408, a pressure plate 412 on the lower end face of the pressure-bearing base 407, and the first heating rod 402 and the second heating rod 404 are both electrically connected to the control console 9. A mounting base 501 is provided on the lower side of the outer wall of the mounting plate 2. An adjusting screw 502 is provided on the upper side of the outer wall of the mounting base 501. A first locking nut 503 is fitted on the outer wall of the adjusting screw 502. A guide sleeve 504 is provided on the lower side of the outer wall of the mounting base 501. A first limiting block 505 is provided on the lower side of the inner wall of the guide sleeve 504. A floating rod 506 is provided inside the guide sleeve 504. A second limiting block 507 is provided on the upper end face of the floating rod 506. A compensation spring 508 is provided on the upper side of the outer wall of the second limiting block 507. The two ends of the compensation spring 508 are respectively connected to the second limiting block 507 and the mounting base 501. A heat-conducting pressure head 509 is provided on the lower end face of the floating rod 506. A third heating rod 510 is provided inside the heat-conducting pressure head 509. The third heating rod 510 is electrically connected to the control console 9. A first universal seat 511 is provided at the connection between the heat-conducting pressure head 509 and the floating rod 506. Both the pressure plate 412 and the heat-conducting pressure head 509 are equipped with temperature sensors 10, and the temperature sensors 10 are connected to the control console 9 through signal lines. Furthermore, after the hot pressing unit 4 contacts the honeycomb panel, the control console 9 controls the first heating rod 402 and the second heating rod 404 to start in sequence. The heat generated by the first heating rod 402 and the second heating rod 404 is transferred to the pressure plate 412. After the temperature sensor 10 at the pressure plate 412 detects that the temperature has reached the preset value, the first heating rod 402 and the second heating rod 404 switch to the heat preservation state. At this time, the compensation unit 5 located in the center of the four hot pressing units 4 also contacts the honeycomb panel. In order to ensure that the temperature adjustment of the third heating rod 510 can adapt to the temperature diffusion on the surface of the honeycomb panel, the temperature sensor 10 embedded in the heat-conducting pressure head 509 detects the temperature of the gap area. The control console 9 combines the heat compensation temperature provided by the compensation unit 5 with the temperature of the four adjacent hot pressing units 4. Based on the average temperature of the pressure plate 412 around the heat-conducting pressure head 509, the target temperature of the third heating rod 510 is adjusted so that the temperature difference between the main pressing area and the gap area of ​​the honeycomb panel does not exceed 2°C.

[0023] Working principle: According to the lower contour model of the hyperboloid of the honeycomb panel, the operator rotates the support screws 702 one by one to adjust the height of the support units 7 arrayed on the support plate 701 so that the upper end of the support unit array 7 covers the lower profile of the hyperboloid of the honeycomb panel. The second locking nut 705 is tightened to fix the support unit 7. According to the size of the honeycomb panel, the screw 803 is rotated to adjust the distance between the second stop 801 and the third stop 802. Then the honeycomb panel to be processed is placed on the support unit 7 array. The protective cover 12 is fixed to the left and right sides of the frame 1 by the locking clip 13. The height of the compensation unit 5 is adjusted by rotating the adjusting screw 502 so that the height of the heat-conducting pressure head 509 is lower than the pressure plate 412. Then the first locking nut 503 is tightened. Based on the hyperboloid digital model of the honeycomb panel, the staff input the target pressing stroke of each hot pressing unit 4 and the target temperature of the first heating rod 402 and the second heating rod 404 into the control console 9. The control console 9 controls the pressing motor 601 to drive the electric push rod 602 to move downward. The displacement sensor 11 at the electric push rod 602 detects that the hot pressing unit 4 has reached the target pressing stroke and then stops. The control console 9 controls the first heating rod 402 and the second heating rod 404 to start. After the temperature sensor 10 at the pressure plate 412 detects that the temperature has reached the preset value, the first heating rod 402 and the second heating rod 404 switch to the heat preservation mode. Under the homogenizing effect of the first elastic body 409, the second elastic body 410 and the third elastic body 411, the temperature and pressure of the hot pressing unit 4 are uniformly applied to the skin of the honeycomb panel. When the hot pressing unit 4 is pressed down, the skin of the gap area enclosed by the hot pressing unit 4 is squeezed upward by the surrounding area, the heat-conducting pressure head 509 is subjected to an upward reaction force, the floating rod 506 slides on the inner line of the guide sleeve 504, the compensation spring 508 provides a downward preload, the first universal seat 511 keeps the heat-conducting pressure head 509 in contact with the honeycomb panel, the control console 9 controls the third heating rod 510 to start, and provides heat supplementation to the blind area during the pressing process of the hot pressing unit 4. At the same time, due to the inclined area of ​​the hyperboloid of the honeycomb panel, the hot pressing unit 4 located in the inclined area generates an inclined reaction force on the pressure plate 412 during the pressing process, causing the return spring 605 to be stretched on one side and compressed on the other side, the hinge sleeve 604 deflects in the hinge seat 603, so that the pressure plate 412 is tightly attached to the honeycomb panel; After the heat preservation and curing are completed, the control console 9 controls the pressing unit 6 to move the hot pressing unit 4 upward and reset it. The protrusion on the surface of the honeycomb panel disappears, the compensation spring 508 drives the floating rod 506 to reset, and the reset spring 605 drives the hinge sleeve 604 to reset. The staff then take out the honeycomb panel that has been processed.

[0024] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A multi-point distributed pressure honeycomb panel hyperboloid forming device, characterized in that: The assembly includes a frame (1), a mounting plate (2), a mounting platform (3), and a hot pressing unit (4). The mounting platform (3) is provided on the upper side of the outer wall of the frame (1). The mounting plate (2) is provided on the upper side of the outer wall of the mounting platform (3). The hot pressing unit (4) is provided on the lower side of the outer wall of the mounting plate (2). The hot pressing units (4) are arranged in an array. The compensation unit (5) is provided on the lower side of the outer wall of the mounting plate (2). The compensation unit (5) is located at the center of the gap enclosed by every 4 hot pressing units (4). The pressing unit (6) is provided at the connection between the hot pressing unit (4) and the mounting plate (2). The support unit (7) is provided on the upper side of the outer wall of the mounting platform (3). The support unit (7) corresponds one-to-one with the hot pressing unit (4). The positioning unit (8) is provided on the upper side of the outer wall of the mounting platform (3). The control console (9) is provided on the left side of the outer wall of the frame (1).

2. The hyperboloid forming equipment for multi-point matrix distributed pressure honeycomb panels according to claim 1, characterized in that: A heat-conducting column (401) is provided on the lower side of the outer wall of the mounting plate (2). A first heating rod (402) is provided in the middle of the inner wall of the heat-conducting column (401). A heat-conducting shell (403) is fitted on the outer wall of the heat-conducting column (401). A second heating rod (404) is provided inside the heat-conducting shell (403). A heat insulation ring (405) is provided between the heat-conducting shell (403) and the heat-conducting column (401). A heat-conducting plate (406) is provided on the lower end face of the heat-conducting shell (403). 403) A pressure-bearing base (407) is provided on the lower side of the outer wall. A nesting groove (408) is provided on the lower side of the outer wall of the pressure-bearing base (407). A first elastic body (409), a second elastic body (410) and a third elastic body (411) are arranged in sequence from the inside to the outside inside the nesting groove (408). A pressure plate (412) is provided on the lower end face of the pressure-bearing base (407). The first heating rod (402) and the second heating rod (404) are both electrically connected to the control console (9).

3. The hyperboloid forming equipment for multi-point matrix distributed pressure honeycomb panels according to claim 2, characterized in that: The mounting plate (2) has a mounting base (501) on the lower side of its outer wall, an adjusting screw (502) on the upper side of its outer wall, a first locking nut (503) fitted on the outer wall of the adjusting screw (502), a guide sleeve (504) on the lower side of its outer wall, a first limiting block (505) on the lower side of the inner wall of the guide sleeve (504), a floating rod (506) inside the guide sleeve (504), and a second limiting block (505) on the upper end face of the floating rod (506). 07), a compensation spring (508) is provided on the upper side of the outer wall of the second limiting block (507). The two ends of the compensation spring (508) are connected to the second limiting block (507) and the mounting base (501) respectively. A heat-conducting pressure head (509) is provided on the lower end face of the floating rod (506). A third heating rod (510) is provided inside the heat-conducting pressure head (509). The third heating rod (510) is electrically connected to the control console (9). A first universal seat (511) is provided at the connection between the heat-conducting pressure head (509) and the floating rod (506).

4. The hyperboloid forming equipment for multi-point matrix distributed pressure honeycomb panels according to claim 3, characterized in that: A downward motor (601) is provided on the upper side of the outer wall of the mounting plate (2). The downward motor (601) is connected to the control console (9) via a power supply line. An electric push rod (602) is provided at the output end of the downward motor (601). A hinge seat (603) is provided on the lower end face of the electric push rod (602). The lower part of the hinge seat (603) is a spherical part. A hinge sleeve (604) is provided on the lower side of the outer wall of the hinge seat (603). The hinge sleeve (604) is provided with a spherical groove that rotates with the spherical part of the hinge seat (603). The hinge seat (603) and Four sets of return springs (605) are evenly arranged circumferentially between the hinge sleeves (604). The two ends of the return springs (605) are connected to the hinge seat (603) and the hinge sleeve (604) respectively. The outer wall of the hinge seat (603) is fitted with a retaining ring (606), and the outer wall of the hinge sleeve (604) is fitted with a first stop block (607). The retaining ring (606) cooperates with the first stop block (607). A heat insulation seat (608) is provided on the lower side of the outer wall of the hinge sleeve (604). The heat insulation seat (608) is used to connect the hot pressing unit (4) and the hinge sleeve (604).

5. The hyperboloid forming equipment for multi-point matrix distributed pressure honeycomb panels according to claim 1, characterized in that: The mounting platform (3) has a support plate (701) on the upper side of its outer wall, a support screw (702) on the upper side of its outer wall, a second universal seat (703) on the upper side of its outer wall, a buffer cap (704) fitted on the outer wall of the second universal seat (703), and a second locking nut (705) in the middle of the outer wall of the support screw (702).

6. The hyperboloid forming equipment for multi-point matrix distributed pressure honeycomb panels according to claim 1, characterized in that: The mounting platform (3) is provided with a second stop (801) on both the front and rear sides of the outer wall, and a third stop (802) on both the left and right sides of the outer wall. The second stop (801) and the third stop (802) are movably connected to the mounting platform (3) through a screw (803).

7. The hyperboloid forming equipment for multi-point matrix distributed pressure honeycomb panels according to claim 3, characterized in that: Temperature sensors (10) are embedded inside both the pressure plate (412) and the heat-conducting pressure head (509), and the temperature sensors (10) are connected to the control console (9) via signal lines.

8. The hyperboloid forming equipment for multi-point matrix distributed pressure honeycomb panels according to claim 4, characterized in that: The floating rod (506) and the electric push rod (602) are both equipped with displacement sensors (11) on their outer walls. The displacement sensors (11) are connected to the control console (9) via signal lines.

9. The hyperboloid forming equipment for multi-point matrix distributed pressure honeycomb panels according to claim 1, characterized in that: The frame (1) is provided with protective covers (12) on both the left and right sides of the outer wall. The protective covers (12) are detachably connected to the frame (1) by locking clips (13).

10. The hyperboloid forming equipment for multi-point matrix distributed pressure honeycomb panels according to claim 2, characterized in that: The Shore hardness of the first elastomer (409), the second elastomer (410) and the third elastomer (411) decreases in stages, and a heat insulation ring (14) is provided between the first elastomer (409), the second elastomer (410) and the third elastomer (411).

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