A preparation method of sound insulation honeycomb panel based on particle damping

Abstract

The present invention relates to a preparation method of a sound-insulating honeycomb panel based on particle damping, wherein the sound-insulating honeycomb panel comprises a honeycomb core, and a particle vibration reduction mechanism is arranged on the honeycomb core; the preparation method comprises: S1, bonding the skin located on the lower side of the honeycomb core to the lower side of the honeycomb core; S2, customizing an isolation tube, marking the connection between the isolation tube and the honeycomb core, and then longitudinally slotting along the marked part; S3, inserting the isolation tube into the corresponding position of the honeycomb core by cooperating with the honeycomb core through the slots arranged on the isolation tube; S4, filling the honeycomb core outside the outer wall of the isolation tube with foam glue, so that the foam glue forms a circle of corresponding fixed guard edges in the honeycomb holes; S5, quantitatively filling damping particles into the particle filling area surrounded by the fixed guard edges. The present invention can quickly and quantitatively fill damping particles, and the prepared product has a better vibration reduction and noise reduction effect.

Description

Technical Field

[0001] The invention relates to a method for preparing a sound insulation honeycomb panel, in particular to a method for preparing a sound insulation honeycomb panel based on particle damping. Background Art

[0002] Existing honeycomb panels generally include a honeycomb core and a skin fixed to the upper and lower sides and outer edges of the honeycomb core by gluing. Due to the special structure of the honeycomb core, the honeycomb panel has the advantages of light weight and high compressive strength. Therefore, the honeycomb panel is widely used in various industries. For example, it is used as floor in subways and trains, or as partitions for indoor partitions. In order to make the honeycomb panel have vibration and noise reduction effects, sound insulation honeycomb panels filled with damping particles began to be used.

[0003] At present, the sound insulation honeycomb panel filled with damping particles realizes the basic support at a lower weight through its honeycomb core, and under the action of the skin, the honeycomb core becomes a sound insulation device that can be easily laid and installed, and then the friction energy consumption between the damping particles filled in the honeycomb core can effectively reduce the vibration and noise transmitted through the sound insulation device. How to improve the use effect of the sound insulation honeycomb panel filled with damping particles, first: improve the vibration reduction and noise reduction effect of the product, among which, the change of the filling method of damping particles in the honeycomb panel, including the reasonable division of the filling area, the amount of filling area, etc., will affect the vibration reduction and noise reduction effect of the product; second: product weight control, because the filling of damping particles is inevitably accompanied by the increase of product weight, when the filling amount of damping particles is too large, it will cause the honeycomb panel to lose its light weight advantage. For this reason, the filling height of damping particles can be reduced, such as controlling the filling height of damping particles to 80% of the honeycomb hole height of the honeycomb panel. However, this approach has great difficulties, such as it is difficult to effectively and quickly and conveniently fill damping particles quantitatively.

[0004] Therefore, the research purpose of the present invention is to develop a method for preparing a sound-insulating honeycomb panel based on particle damping, which can form reasonable particle filling in the honeycomb panel to ensure that the produced product has a high vibration reduction and noise reduction effect; and can realize fast and convenient quantitative filling of damping particles; and can effectively ensure the quality controllability of the product during the production process. Summary of the invention

[0005] In view of the technical problems existing in the above-mentioned prior art, the present invention provides a method for preparing a sound insulation honeycomb panel based on particle damping, which can effectively solve the technical problems existing in the above-mentioned prior art.

[0006] The technical solution of the present invention is:

[0007] A method for preparing a sound-insulating honeycomb panel based on particle damping,

[0008] The sound insulation honeycomb panel comprises a honeycomb core, the upper and lower sides and outer edges of the honeycomb core are covered and connected with a corresponding skin, the honeycomb core is provided with a particle damping mechanism, the particle damping mechanism comprises at least one particle filling area provided on the honeycomb core, and the particle filling areas are respectively filled with corresponding damping particles;

[0009] The preparation method comprises the following specific preparation steps:

[0010] S1, bonding the skin located on the lower side of the honeycomb core to the lower side of the honeycomb core by gluing;

[0011] S2, customizing an isolation tube with a through-hole shape and size equal to the particle filling area, placing the isolation tube corresponding to the particle filling area of ​​the honeycomb core, marking the connection between the isolation tube and the honeycomb core, and then longitudinally grooving along the marked portion;

[0012] S3, applying a layer of release agent on the outer wall of the isolation tube, inserting the isolation tubes into corresponding positions of the honeycomb core respectively through the grooves provided on the isolation tubes to cooperate with the honeycomb core, so that the bottom of the isolation tubes abuts against the skin located on the bottom side of the honeycomb core;

[0013] S4, filling the honeycomb core outside the outer wall of the isolation tube with foam glue, and after the foam glue is shaped, pulling the isolation tube away from the honeycomb core, so that the foam glue forms a circle of corresponding fixed edge in the honeycomb holes outside the particle filling area;

[0014] S5, quantitatively filling damping particles into the particle filling area surrounded by the fixed guard edge through the corresponding damping particle quantitative filling mechanism;

[0015] S6, bonding the skin located on the upper side and the outer edge of the honeycomb core to the honeycomb core by gluing and fixing, thereby completing the manufacture of the particle damping-based sound insulation honeycomb panel.

[0016] The particle filling area includes a central filling area located at the center of the honeycomb core, and at least two rows of peripheral filling areas arranged in a ring array on the periphery of the central filling area; between two adjacent rows of peripheral filling areas, the area of ​​the inner peripheral filling area is larger than the area of ​​the outer peripheral filling area, and the area of ​​the innermost peripheral filling area is smaller than the filling area of ​​the central filling area.

[0017] The particle quantitative filling mechanism in step S5 includes:

[0018] A fixing member, wherein the fixing member is provided with a corresponding fixing hole;

[0019] A plurality of controlled-volume honeycomb cores, the specifications and sizes of which are respectively equal to the central filling area and the peripheral filling area of ​​the honeycomb core, the controlled-volume honeycomb cores are respectively detachably mounted in the fixing holes of the fixing members, the heights of the controlled-volume honeycomb cores are all smaller than the heights of the honeycomb cores, and the outer side walls of the controlled-volume honeycomb cores are respectively fixed with a corresponding fixing sleeve;

[0020] A partition plate can be pulled out and installed on a fixing piece at the bottom of the volume-controlled honeycomb core;

[0021] A plurality of honeycomb funnels are provided, each having a size equal to that of the quantity-controlled honeycomb core. The honeycomb funnels are detachably mounted on a fixing member at the lower side of the partition plate. The honeycomb funnels are respectively provided with guide honeycomb holes for guiding the damping particles in the honeycomb holes of the quantity-controlled honeycomb core to be filled into the central filling area and the peripheral filling area of ​​the honeycomb core.

[0022] A corresponding funnel fixing plate is fixedly connected to the outer side of the top of the honeycomb funnel, and the funnel fixing plate can be pulled out and installed on the fixing piece on the lower side of the partition plate; the lower side of the honeycomb funnel is respectively provided with plugging grooves for plugging into the honeycomb core.

[0023] The outer side wall of the fixing sleeve is integrally formed and fixedly connected to a corresponding plug-in plate. The fixing sleeve and the controlled volume honeycomb core are detachably installed in the fixing hole of the fixing member through the cooperation of the plug-in plate and the fixing member.

[0024] The step S5 of quantitatively filling the damping particles into the particle filling area surrounded by the fixed guard edge comprises:

[0025] S51, installing the partition plate on the fixing member;

[0026] S52, installing the corresponding fixing sleeve and the controlled-volume honeycomb core into the fixing hole of the fixing member by cooperating the plug-in board with the fixing member;

[0027] S53, installing the honeycomb funnel on the fixing piece at the lower side of the partition plate through the funnel fixing plate;

[0028] S54, filling an appropriate amount of damping particles into the honeycomb holes of the controlled quantity honeycomb core in the fixed sleeve in a full state;

[0029] S55, moving the particle quantitative filling mechanism as a whole to the upper side of the honeycomb core, and aligning the honeycomb funnel directly with the corresponding damping particle filling area, and then plugging the plug-in slot on the lower side of the honeycomb funnel into the honeycomb core;

[0030] S56, pulling the partition plate away from the fixing member, so that the damping particles in the controlled quantity honeycomb core are respectively filled into the corresponding particle filling areas;

[0031] S57, repeating steps S51-S56, and replacing the corresponding fixed sleeve, the quantity-controlled honeycomb core and the honeycomb funnel to complete the particle filling of each particle filling area.

[0032] In the step S5, the filling height of the damping particles in the particle filling area does not exceed 80% of the height of the honeycomb core.

[0033] Before step S6, corresponding flexible filling pieces are respectively installed in the honeycomb holes filled with damping particles in the honeycomb core, and at least one circle of corresponding buffer grooves are concavely arranged on the flexible filling pieces. When the upper skin of the honeycomb core is bonded, the flexible filling pieces are fixed between the upper side of the corresponding damping particles and the corresponding skin by an extrusion device.

[0034] The flexible filling piece is made of soft foaming material in one piece.

[0035] The damping particles include but are not limited to spherical iron-based particles or spherical ceramic particles.

[0036] Advantages of the present invention:

[0037] 1) Under the action of steps S2-S4, the present invention can effectively form a circle of corresponding fixed guard edges in the honeycomb holes outside the particle filling area, and then quantitatively fill the damping particles into the particle filling area surrounded by the fixed guard edges to complete the filling of the damping particles. Under the action of the fixed guard edges, on the one hand, it is convenient to accurately control the filling area and shape of the particle filling area; on the other hand, it can significantly enhance the rigidity of the honeycomb core, especially it can form a structural resonance area and a surface rigidity area outside the particle filling area, thereby further improving the sound insulation.

[0038] 2) The present invention divides the particle filling area into a central filling area located at the center of the honeycomb core and at least two rows of peripheral filling areas arranged in a ring array on the periphery of the central filling area. Between two adjacent rows of peripheral filling areas, the area of ​​the inner peripheral filling area is larger than the area of ​​the outer peripheral filling area, and the area of ​​the innermost peripheral filling area is smaller than the filling area of ​​the central filling area. It has been experimentally demonstrated that the sound insulation of the product after the particle filling area is divided by the distribution method of the present invention within 50-2500Hz is significantly better than the existing central filling and the damping particle filling method such as the nine-square format uniformly distributed filling.

[0039] 3) The present invention can realize fast and efficient filling of damping particles by improving the particle quantitative filling mechanism adopted in step S5 and the corresponding coordinated improvement of steps S51-S57, and by controlling the height of the honeycomb core, the filling amount (filling height) of the damping particles can be effectively and accurately controlled, thereby breaking the technical barrier that the existing vibration-damping honeycomb panel products cannot quickly and quantitatively fill the damping particles, so as to quickly and conveniently quantitatively fill the damping particles.

[0040] 4) In order to reduce the weight of the product, the present invention controls the filling height of the damping particles in step S5 to not exceed 80% of the height of the honeycomb core. In order to reduce the impact of the reduction in the filling height, before step S6, the present invention installs corresponding flexible filling members in the honeycomb holes filled with damping particles in the honeycomb core. The most important thing is that at least one circle of corresponding buffer grooves are concavely arranged on the flexible filling members. When the upper skin of the honeycomb core is bonded, the flexible filling members are fixed between the upper side of the corresponding damping particles and the corresponding skin by an extrusion device.

[0041] Under the action of the concave buffer groove, the flexible filler can easily form compression deformation at the location of the buffer groove, so that the flexible filler can form a larger compression stroke under the action of a smaller extrusion force. On the one hand, it can reduce its reaction force on the skin, thereby effectively maintaining the connection stability between the skin and the honeycomb core; on the other hand, it can make the flexible filler produce a larger compression amount (stroke) under a smaller force, so as to expand its elastic deformation stroke, which can form a better fixing effect on the damping particles and effectively form a better buffering effect, so that the damping particles can have more obvious kinetic energy in the state of compact filling, thereby forming a more obvious friction energy consumption effect.

[0042] 5) With the cooperation of the particle filling area and the fixed guard edge of the present invention, the filling range of the product can be highly controllable and repetitively produced; and with the improvement of the particle quantitative filling mechanism of the present invention and the corresponding improvement of steps S51-S57, the damping particles can be repeatedly and quickly filled in a quantitative manner, thereby forming a highly controllable and repetitive addition of the filling amount of the damping particles of the product; and under the action of the flexible filling member of the concave buffer groove, the filling compactness of the damping particles after quantitative filling can be maintained, thereby effectively ensuring the quality controllability of the present invention in the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a construction flow chart of the present invention.

[0044] Figure 2 The figure is a schematic diagram of the structure of the sound insulation honeycomb panel prepared by the present invention.

[0045] Figure 3 This is a cross-sectional view of the sound insulation honeycomb panel prepared by the present invention.

[0046] Figure 4 It is a schematic structural diagram of the isolation tube of the present invention.

[0047] Figure 5 It is a schematic structural diagram of the damping particle quantitative filling mechanism in step S5 of the present invention.

[0048] Figure 6 It is an exploded view of the parts of the damping particle quantitative filling mechanism in step S5 of the present invention.

[0049] Figure 7 A schematic diagram of the structure of the fixing parts of the damping particle quantitative filling mechanism.

[0050] Figure 8 Schematic diagram of the structure of the controlled quantity honeycomb core with damping particle quantitative filling mechanism.

[0051] Fig. 9 Schematic diagram of the structure of the honeycomb funnel for the damping particle quantitative filling mechanism.

[0052] Fig.10 for Fig. 9 A partial enlarged view of .

[0053] Fig.11 Construction flow chart of step S5 of the present invention.

[0054] Fig.12 It is a schematic diagram of the structure of the flexible filling piece.

[0055] Fig.13 It is a structural schematic diagram of a honeycomb core in which the honeycomb holes are filled with damping particles and flexible filling members.

[0056] Fig.14 It is the sound insulation test curve diagram of Example 1 and Comparative Examples 1-4. DETAILED DESCRIPTION

[0057] In order to facilitate understanding by those skilled in the art, the structure of the present invention is further described in detail with reference to the embodiments in conjunction with the accompanying drawings:

[0058] Embodiment 1:

[0059] Please refer to Figure 1-13 , a method for preparing a sound insulation honeycomb panel based on particle damping,

[0060] The sound insulation honeycomb panel 1 comprises a honeycomb core 101, the upper and lower sides and outer edges of the honeycomb core 101 are covered and connected with a corresponding skin 102, the honeycomb core 101 is provided with a particle damping mechanism 2, the particle damping mechanism 2 comprises a plurality of particle filling areas provided on the honeycomb core 101, and the particle filling areas are respectively filled with corresponding damping particles;

[0061] The particle filling area includes a central filling area located at the center of the honeycomb core 101, and two rows of peripheral filling areas arranged in a ring array on the periphery of the central filling area; between two adjacent rows of peripheral filling areas, the area of ​​the inner peripheral filling area is larger than the area of ​​the outer peripheral filling area, and the area of ​​the innermost peripheral filling area is smaller than the filling area of ​​the central filling area (in this embodiment, the radius of the inner peripheral filling area is twice that of the outer peripheral filling area, and the radius of the central filling area is twice that of the innermost peripheral filling area); the damping particles are spherical iron-based particles;

[0062] The preparation method comprises the following specific preparation steps:

[0063] S1, bonding the lower skin 102 located at the honeycomb core 101 to the lower side of the honeycomb core 101 by gluing;

[0064] S2, customizing an isolation tube 3 with a through hole shape and size equal to the particle filling area, placing the isolation tube 3 corresponding to the particle filling area of ​​the honeycomb core 101, marking the connection between the isolation tube 3 and the honeycomb core 101, and then longitudinally grooving along the marked part;

[0065] S3, a layer of mold release agent is applied on the outer wall of the isolation tube 3 (the mold release agent used in this embodiment is an existing product and can be directly purchased from the market), and the isolation tubes 3 are respectively inserted into the corresponding positions of the honeycomb core 101 through the grooves provided on the isolation tube 3 and the honeycomb core 101, so that the bottom of the isolation tube 3 abuts against the skin 102 located on the bottom side of the honeycomb core 101;

[0066] S4, filling the honeycomb core 101 outside the outer wall of the isolation tube 3 with foam glue, and after the foam glue is shaped, the isolation tube 3 is pulled away from the honeycomb core 101, so that the foam glue forms a circle of corresponding fixed edge 4 in the honeycomb holes outside the particle filling area;

[0067] S5, quantitatively filling damping particles into the particle filling area surrounded by the fixed guard edge 4 through the corresponding damping particle quantitative filling mechanism 5;

[0068] The particle quantitative filling mechanism 5 in step S5 comprises:

[0069] A fixing member 501, wherein the fixing member 501 is provided with a corresponding fixing hole 5011;

[0070] A plurality of controlled-volume honeycomb cores 502, the size of which is respectively equal to the central filling area and the peripheral filling area of ​​the honeycomb core 101, the controlled-volume honeycomb cores 502 are respectively detachably mounted in the fixing holes 5011 of the fixing member 501, the height of the controlled-volume honeycomb cores 502 is smaller than the height of the honeycomb core 101, and the outer side walls of the controlled-volume honeycomb cores 502 are respectively fixed with a corresponding fixing sleeve 5021;

[0071] The partition plate 503 can be pulled out and installed on the fixing piece 501 at the bottom of the control volume honeycomb core 502;

[0072] A plurality of honeycomb funnels 504, each having the same size as the control quantity honeycomb core 502, the honeycomb funnel 504 being detachably mounted on the fixing member 501 at the lower side of the partition plate 503, and the honeycomb funnel 504 being respectively provided with guide honeycomb holes 5041 for guiding the damping particles in the honeycomb holes of the control quantity honeycomb core 502 to be filled into the central filling area and the peripheral filling area of ​​the honeycomb core 101;

[0073] A corresponding funnel fixing plate 5042 is fixedly connected to the outer side of the top of the honeycomb funnel 504, and the funnel fixing plate 5042 can be pulled out and installed on the fixing member 501 on the lower side of the partition plate 503; the lower side of the honeycomb funnel 504 is respectively provided with a plug-in groove 5043 for plugging into the honeycomb core 101;

[0074] The outer wall of the fixing sleeve 5021 is integrally formed and fixedly connected to a corresponding plug-in board 5022, and the fixing sleeve 5021 and the control honeycomb core 502 are detachably installed in the fixing hole 5011 of the fixing member 501 through the plug-in board 5022 cooperating with the fixing member 501;

[0075] In the step S5, quantitatively filling the damping particles into the particle filling area surrounded by the fixed guard edge 4 includes:

[0076] S51, installing the partition plate 503 on the fixing member 501;

[0077] S52, installing the corresponding fixing sleeve 5021 and the control honeycomb core 502 into the fixing hole 5011 of the fixing member 501 through the matching of the plug-in board 5022 and the fixing member 501;

[0078] S53, installing the honeycomb funnel 504 on the fixing member 501 at the lower side of the partition plate 503 through the funnel fixing plate 5042;

[0079] S54, filling an appropriate amount of damping particles into the honeycomb holes of the controlled quantity honeycomb core 502 in the fixed sleeve 5021 in a full state;

[0080] S55, the particle quantitative filling mechanism 5 is moved as a whole to the upper side of the honeycomb core 101, and the honeycomb funnel 504 is directly aligned with the corresponding damping particle filling area, and then the plug-in groove 5043 on the lower side of the honeycomb funnel 504 is plugged into the honeycomb core 101;

[0081] S56, the partition plate 503 is pulled away from the fixing member 501, so that the damping particles in the controlled quantity honeycomb core 502 are respectively filled into the corresponding particle filling areas;

[0082] S57, repeating steps S51-S56, and replacing the corresponding fixed sleeve 5021, the control quantity honeycomb core 502 and the honeycomb funnel 504, to complete the particle filling of each particle filling area;

[0083] In the step S5, the filling height of the damping particles in the particle filling area is 70% of the height of the honeycomb core 101;

[0084] Corresponding flexible filling members 6 are respectively installed in the honeycomb holes filled with damping particles in the honeycomb core 101, and at least one circle of corresponding buffer grooves 601 are concavely arranged on the flexible filling members 6. When the upper skin 102 of the honeycomb core 101 is bonded, the flexible filling members 6 are fixed between the upper side of the corresponding damping particles and the corresponding skin 102 by an extrusion device;

[0085] The flexible filling member 6 is made of a soft foam material formed in one piece, wherein the soft foam material is made of plastic and rubber as raw materials, with a catalyst, a foam stabilizer, and a foaming agent, and is foamed by physical foaming or cross-linking foaming to produce a soft foam material with a large amount of fine foam, increased volume, and reduced density. This is a prior art and can be directly obtained by outsourcing, and its preparation process will not be described in detail here;

[0086] S6, bonding the skin 102 located on the upper side and the outer edge of the honeycomb core 101 to the honeycomb core 101 by gluing and fixing, thereby completing the manufacture of the particle damping-based sound insulation honeycomb panel.

[0087] Comparative Example 1:

[0088] A honeycomb core 101 and a skin 102 having the same size and specifications as those in the first embodiment are selected, and then the same amount of damping particles, i.e., damping particles having the same specifications, quantity and weight as those in the first embodiment, are filled into the center of the honeycomb core at the same filling height.

[0089] The implementation principle and technical effects of this comparative example are the same as those of Example 1. For the sake of brief description, reference may be made to the corresponding contents in Example 1 for matters not mentioned in this example.

[0090] Comparative Example 2:

[0091] A honeycomb core 101 and a skin 102 having the same size and specifications as those in the first embodiment are selected, and then an equal amount of damping particles, i.e., damping particles having the same specifications, quantity, and weight as those in the first embodiment, are uniformly filled on the honeycomb core in a nine-square grid distribution manner at the same filling height.

[0092] The implementation principle and technical effects of this comparative example are the same as those of Example 1. For the sake of brief description, reference may be made to the corresponding contents in Example 1 for matters not mentioned in this example.

[0093] Comparative Example 3:

[0094] A honeycomb core 101 and a skin 102 with the same size and specifications as those in the first embodiment are selected, and the fixed flange 4 is not provided. Then, an equal amount of damping particles, that is, damping particles with the same specifications, quantity and weight as those in the first embodiment are uniformly filled in the distribution manner of the first embodiment.

[0095] The implementation principle and technical effects of this comparative example are the same as those of Example 1. For the sake of brief description, reference may be made to the corresponding contents in Example 1 for matters not mentioned in this example.

[0096] Comparative Example 4:

[0097] A honeycomb core 101 and a skin 102 having the same size specifications as those in Example 1 are selected, and then an equal amount of damping particles, i.e., damping particles having the same specifications, quantity, and weight as those in Example 1 are uniformly filled in the distribution manner of Example 1, and a flexible filling piece extrusion device is performed between the upper side of the corresponding damping particles and the corresponding skin 102, wherein the flexible filling piece is not provided with a buffer groove 601.

[0098] The implementation principle and technical effects of this comparative example are the same as those of Example 1. For the sake of brief description, reference may be made to the corresponding contents in Example 1 for matters not mentioned in this example.

[0099] According to the sound insulation test standard: GB / T 19889.3, the sound insulation of the product prepared in Example 1 and the four products of Comparative Examples 1-4 at a frequency of 50-2500 Hz was tested. The test results are as follows: Fig.14 As shown. Fig.14It can be seen that the sound insulation of the product prepared in Example 1 is optimal within 50-2500Hz; the second is Comparative Example 4, so it can be clearly obtained that the use of the flexible filling member 6 provided with the buffer groove 601 can improve the vibration reduction and noise reduction effect to a certain extent under the action of the buffer groove 601; the next are Comparative Examples 1 and 2, wherein the sound insulation of Comparative Examples 1 and 2 has advantages in different frequency bands, so it can be clearly obtained that the sound insulation of the product after the particle filling area is divided by the distribution method of the present invention within 50-2500Hz is obviously better than the existing center filling and the damping particle filling method such as the nine-square format uniformly distributed filling; the last is Comparative Example 3, so it can be clearly obtained that the product provided with the fixed guard edge 4 can significantly enhance the effect of the honeycomb core stiffness, especially can form a structural resonance area and a surface stiffness area on the periphery of the particle filling area, thereby greatly improving the sound insulation.

[0100] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for preparing a sound-insulating honeycomb panel based on particle damping, characterized in that: The sound insulation honeycomb panel (1) comprises a honeycomb core (101), the upper and lower sides and outer edges of the honeycomb core (101) are covered and connected with a corresponding skin (102), the honeycomb core (101) is provided with a particle vibration reduction mechanism (2), the particle vibration reduction mechanism (2) comprises at least one particle filling area provided on the honeycomb core (101), and the particle filling areas are respectively filled with corresponding damping particles; The preparation method comprises the following specific preparation steps: S1, bonding the lower skin (102) of the honeycomb core (101) to the lower side of the honeycomb core (101) by gluing; S2, customizing an isolation tube (3) with a through hole shape and size equal to the particle filling area, placing the isolation tube (3) corresponding to the particle filling area of ​​the honeycomb core (101), marking the connection between the isolation tube (3) and the honeycomb core (101), and then longitudinally slotting along the marked portion; S3, applying a layer of mold release agent on the outer wall of the isolation tube (3), inserting the isolation tube (3) into corresponding positions of the honeycomb core (101) through the grooves provided on the isolation tube (3) and cooperating with the honeycomb core (101), so that the bottom of the isolation tube (3) abuts against the skin (102) located on the bottom side of the honeycomb core (101); S4, filling the honeycomb core (101) outside the outer wall of the isolation tube (3) with foam glue, and after the foam glue is shaped, pulling the isolation tube (3) away from the honeycomb core (101), so that the foam glue forms a circle of corresponding fixed edge (4) in the honeycomb holes outside the particle filling area; S5, quantitatively filling damping particles into the particle filling area surrounded by the fixed guard edge (4) through the corresponding damping particle quantitative filling mechanism (5); S6, bonding the skin (102) located on the upper side and the outer edge of the honeycomb core (101) to the honeycomb core (101) by gluing and fixing, thereby completing the production of the particle damping-based sound insulation honeycomb panel.

2. The method for preparing a sound-insulating honeycomb panel based on particle damping according to claim 1, characterized in that: The particle filling area comprises a central filling region located at the center of the honeycomb core (101), and at least two rows of peripheral filling regions arranged in an annular array at the periphery of the central filling region; Between two adjacent rows of peripheral filling areas, the area of ​​the inner peripheral filling area is larger than the area of ​​the outer peripheral filling area, and the area of ​​the innermost peripheral filling area is smaller than the filling area of ​​the central filling area.

3. The method for preparing a sound-insulating honeycomb panel based on particle damping according to claim 2, characterized in that: The particle quantitative filling mechanism (5) in step S5 comprises: A fixing member (501), wherein the fixing member (501) is provided with a corresponding fixing hole (5011); A plurality of controlled-volume honeycomb cores (502), the specifications and sizes of which are respectively equal to the central filling area and the peripheral filling area of ​​the honeycomb core (101); the controlled-volume honeycomb cores (502) are respectively detachably mounted in the fixing holes (5011) of the fixing members (501); the height of the controlled-volume honeycomb cores (502) is smaller than the height of the honeycomb core (101); and the outer side walls of the controlled-volume honeycomb cores (502) are respectively fixedly mounted with a corresponding fixing sleeve (5021); A partition plate (503) can be pulled out and installed on the fixing member (501) at the bottom of the volume-controlled honeycomb core (502); A plurality of honeycomb funnels (504) are provided, each having a size equal to that of the control quantity honeycomb core (502). The honeycomb funnels (504) are detachably mounted on a fixing member (501) at the lower side of the partition plate (503). The honeycomb funnels (504) are respectively provided with guide honeycomb holes (5041) for guiding damping particles in the honeycomb holes of the control quantity honeycomb core (502) to be filled into a central filling area and a peripheral filling area of ​​the honeycomb core (101).

4. The method for preparing a sound-insulating honeycomb panel based on particle damping according to claim 3, characterized in that: A corresponding funnel fixing plate (5042) is fixedly connected to the outer side of the top of the honeycomb funnel (504), and the funnel fixing plate (5042) can be pulled out and installed on the fixing member (501) on the lower side of the partition plate (503); the lower side of the honeycomb funnel (504) is respectively provided with a plug-in groove (5043) for plugging into the honeycomb core (101).

5. The method for preparing a sound-insulating honeycomb panel based on particle damping according to claim 4, characterized in that: The outer side wall of the fixing sleeve (5021) is integrally formed and fixedly connected to the outside with a corresponding plug-in plate (5022), and the fixing sleeve (5021) and the controlled volume honeycomb core (502) are detachably installed in the fixing hole (5011) of the fixing member (501) through the cooperation of the plug-in plate (5022) and the fixing member (501).

6. The method for preparing a sound-insulating honeycomb panel based on particle damping according to claim 5, characterized in that: The step S5 of quantitatively filling the damping particles into the particle filling area surrounded by the fixed guard edge (4) comprises: S51, installing the partition plate (503) on the fixing member (501); S52, installing the corresponding fixing sleeve (5021) and the control quantity honeycomb core (502) into the fixing hole (5011) of the fixing member (501) by means of the plug-in board (5022) cooperating with the fixing member (501); S53, installing the honeycomb funnel (504) on the fixing member (501) on the lower side of the partition plate (503) through the funnel fixing plate (5042); S54, filling an appropriate amount of damping particles into the honeycomb holes of the controlled quantity honeycomb core (502) in the fixed sleeve (5021) in a full state; S55, moving the particle quantitative filling mechanism (5) as a whole to the upper side of the honeycomb core (101), and aligning the honeycomb funnel (504) directly with the corresponding damping particle filling area, and then plugging the plug-in groove (5043) on the lower side of the honeycomb funnel (504) into the honeycomb core (101); S56, pulling the partition plate (503) away from the fixing member (501), so that the damping particles in the controlled quantity honeycomb core (502) are respectively filled into the corresponding particle filling areas; S57, repeating steps S51-S56, and replacing the corresponding fixed sleeve (5021), the controlled quantity honeycomb core (502) and the honeycomb funnel (504) to complete the particle filling of each particle filling area.

7. The method for preparing a sound-insulating honeycomb panel based on particle damping according to claim 1, characterized in that: In the step S5, the filling height of the damping particles in the particle filling area does not exceed 80% of the height of the honeycomb core (101).

8. The method for preparing a sound-insulating honeycomb panel based on particle damping according to claim 7, characterized in that: Prior to step S6, corresponding flexible filling members (6) are respectively installed in the honeycomb holes filled with damping particles in the honeycomb core (101), and at least one circle of corresponding buffer grooves (601) are concavely arranged on the flexible filling members (6). When the upper side skin (102) of the honeycomb core (101) is bonded, the flexible filling members (6) are fixed between the upper side of the corresponding damping particles and the corresponding skin (102) by an extrusion device.

9. The method for preparing a sound-insulating honeycomb panel based on particle damping according to claim 8, characterized in that: The flexible filling piece (6) is made of soft foaming material in an integrated manner.

10. The method for preparing a sound-insulating honeycomb panel based on particle damping according to claim 1, characterized in that: The damping particles include but are not limited to spherical iron-based particles or spherical ceramic particles.

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