Automobile sound-absorbing cotton and forming device and preparation method thereof

Abstract

The invention belongs to the technical field of automobile sound-absorbing cotton, and particularly relates to automobile sound-absorbing cotton and a forming device and a preparation method thereof, and the forming device of the automobile sound-absorbing cotton comprises a rack, a waterproof breathable film storage mechanism, a side sealing mechanism, a sealing extrusion forming mechanism and a grabbing mechanism; the side sealing mechanism is connected to the rack; the sealing extrusion forming mechanism is connected to the rack; a forming cavity is formed between the side sealing mechanism and the sealing extrusion forming mechanism; the waterproof breathable film storage mechanism is connected to the rack and is used for storing a waterproof breathable film; the grabbing mechanism is connected to the machine frame. And the grabbing mechanism is used for promoting the waterproof breathable film to penetrate through the forming cavity so as to form at least two foaming cavities. According to the invention, the compactness of the whole structure can be ensured, the occupied space of equipment is saved, the production and processing efficiency of sound-absorbing cotton is improved, and the investment of manpower and material resources is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of automotive sound-absorbing cotton, and particularly relates to an automotive sound-absorbing cotton, a forming device thereof, and a preparation method thereof. Background Art

[0002] The sound-absorbing cotton is formed by thermal spraying and melting of various materials. Its structure is extremely fine tubular fibers, which has the characteristics of high sound absorption coefficient, flame retardancy, extremely low water absorption rate, non-moldy, non-toxic, odorless, and dust-free. The automotive sound-absorbing cotton is mainly used in the production of automotive carpets, and its production process includes needle punching feeding, feeding, preheating, and finally hot pressing into the same size and shape.

[0003] However, the sound absorption effect of most existing sound-absorbing cottons is not good, and the quality of the sound-absorbing cotton produced and processed by them is poor, and the production and processing efficiency is low. Summary of the Invention

[0004] The purpose of the present invention is to provide an automotive sound-absorbing cotton, a forming device thereof, and a preparation method thereof, which can solve the technical problem of low production and processing efficiency in the prior art.

[0005] In order to achieve the above purpose, the present invention adopts the following technical scheme: A forming device for an automotive sound-absorbing cotton, comprising a frame, a waterproof and breathable film storage mechanism, a side sealing mechanism, a sealing and extrusion forming mechanism, and a grasping mechanism; the side sealing mechanism is connected to the frame; the sealing and extrusion forming mechanism is connected to the frame; and a forming cavity is provided between the side sealing mechanism and the sealing and extrusion forming mechanism; the waterproof and breathable film storage mechanism is connected to the frame and is used for storing the waterproof and breathable film; the grasping mechanism is connected to the frame; and the grasping mechanism is used to promote the waterproof and breathable film to pass through the forming cavity to form at least two foaming cavities.

[0006] Preferably, the side sealing mechanism includes a first annular sealing plate, a second annular sealing plate, and a first lifting driving component; the installation end of the first lifting driving component is connected to the frame; and the movable end of the first lifting driving component is connected to the first annular sealing plate and / or the second annular sealing plate; an assembly gap is provided between the first annular sealing plate and the second annular sealing plate; the assembly gap is used for clamping and assembling the waterproof and breathable film; the inner side wall of the first annular sealing plate, the inner side wall of the second annular sealing plate, and the sealing and extrusion forming mechanism form the forming cavity.

[0007] Preferably, a cutting mechanism is provided on the outer surface of the first annular sealing plate and / or the outer surface of the second annular sealing plate; The cutting mechanism includes a cutting knife and a second lateral translation driving component; the second lateral translation driving component is drivingly connected to the mounting end of the cutting knife; the cutting end of the cutting knife extends into the assembly gap for arrangement.

[0008] Preferably, a foaming material supply mechanism is further provided on the frame; the foaming material supply mechanism includes a storage tank, a pumping pump, a discharge pipe and a conveying pipe; the storage tank is connected to the frame; one end of the conveying pipe is communicated with the storage tank; the other end of the conveying pipe is communicated with the inlet of the pumping pump; the pumping pump is connected to the outer surface of the first annular sealing plate or the outer surface of the second annular sealing plate; the discharge port of the pumping pump is communicated with one end of the discharge pipe; the other end of the discharge pipe passes through the first annular sealing plate or the second annular sealing plate and is communicated with the foaming cavity.

[0009] Preferably, the sealing and extrusion molding mechanism includes a heating and extrusion component, a cooling and extrusion component and at least one second lifting driving component; the mounting end of the second lifting driving component is connected to the frame; and the movable end of each second lifting driving component is connected to the heating and extrusion component or the cooling and extrusion component; a molding cavity is formed between the heating and extrusion component, the cooling and extrusion component and the side sealing mechanism.

[0010] Preferably, the grasping mechanism includes an adsorption and clamping component and a lateral translation driving component; the lateral translation driving component is connected to the frame and is drivingly connected to the adsorption and clamping component, so that the adsorption and clamping component moves back and forth towards or away from the waterproof and breathable film storage mechanism.

[0011] Preferably, the waterproof and breathable film storage mechanism includes a storage roller and at least two mounting seats; the left and right ends of the storage roller are respectively connected to two different mounting seats; the mounting seats are connected to the frame; and the storage roller is used for storing the waterproof and breathable film.

[0012] The present invention also discloses an automotive sound-absorbing cotton, which is processed by using the forming device of the above-mentioned automotive sound-absorbing cotton; and the automotive sound-absorbing cotton includes a sound-absorbing outer layer, a first adhesive layer, a first foaming layer, a waterproof and breathable film, a second foaming layer, a second adhesive layer and a sound-absorbing inner layer which are sequentially stacked.

[0013] Preferably, the waterproof and breathable film is provided with guide holes; the first foaming layer extends through the guide holes; and / or, the second foaming layer extends through the guide holes.

[0014] The present invention also discloses a preparation method of an automotive sound-absorbing cotton, which uses the forming device of the automotive sound-absorbing cotton described above to execute the preparation method of the automotive sound-absorbing cotton; and the preparation method of the automotive sound-absorbing cotton includes: S1. Transfer the sound-absorbing inner layer to the inner bottom of the sealing and extrusion forming mechanism; wherein, a second adhesive layer is adhered to one surface of the sound-absorbing inner layer; S2. Drive the grasping mechanism to the waterproof and breathable film storage mechanism to grasp the waterproof and breathable film and pass it through the side sealing mechanism and the sealing and extrusion forming mechanism; S3. Drive the forming cavity between the side sealing mechanism and the sealing and extrusion forming mechanism respectively to form two foaming cavities on the upper and lower sides; S4. Inject foaming raw materials into the foaming cavities respectively, and perform heating and foaming treatment and cooling and forming treatment to form a first foaming layer and a second foaming layer on the upper and lower sides of the waterproof and breathable film; S5. Drive the sealing and extrusion forming mechanism to open the forming cavity; and transfer the sound-absorbing outer layer to the upper first foaming layer; wherein, a first adhesive layer is adhered to one surface of the sound-absorbing outer layer; S6. Drive the sealing and extrusion forming mechanism to close the forming cavity and extrude the sound-absorbing outer layer, so as to form an automotive sound-absorbing cotton in which the sound-absorbing outer layer, the first adhesive layer, the first foaming layer, the waterproof and breathable film, the second foaming layer, the second adhesive layer and the sound-absorbing inner layer are stacked in sequence.

[0015] The beneficial effect of the present invention is that through the rapidity of the movement and grasping of the grasping mechanism in this technical solution, it promotes the formation of a partition structure layer of the waterproof and breathable film to be assembled between the side sealing mechanism and the sealing and extrusion forming mechanism, which is beneficial to ensuring the orderliness and rapidity of foam forming, and ensuring the compactness of the overall structure, saving the occupied space of the equipment, thereby improving the production and processing efficiency of the sound-absorbing cotton and reducing the input of manpower and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following will describe the features, advantages and technical effects of the exemplary embodiments of the present invention with reference to the appended Figures 1 to 8 drawings to describe the features, advantages and technical effects of the exemplary embodiments of the present invention.

[0017] Figure 1 is a schematic structural diagram of a forming device for an automotive sound-absorbing cotton according to an embodiment of the present invention; Figure 2 is a schematic structural diagram of a forming device for an automotive sound-absorbing cotton according to an embodiment of the present invention; Figure 3 is a schematic structural diagram of a grasping mechanism of a forming device for an automotive sound-absorbing cotton according to an embodiment of the present invention; Figure 4 is a schematic structural diagram of a suction attachment in a grasping mechanism of a forming device for an automotive sound-absorbing cotton according to an embodiment of the present invention; Figure 5 Partial structural schematic diagram of a forming device for automotive sound-absorbing cotton according to an embodiment of the present invention; Figure 6 Structural schematic diagram of a cutting mechanism of a forming device for automotive sound-absorbing cotton according to an embodiment of the present invention; Figure 7 Structural schematic diagram of sound-absorbing cotton according to an embodiment of the present invention; Figure 8 Structural schematic diagram of sound-absorbing cotton according to an embodiment of the present invention.

[0018] In the figure: 11 - sound-absorbing outer layer; 12 - sound-absorbing inner layer; 21 - first foaming layer; 22 - second foaming layer; 3 - waterproof and breathable film; 31 - guide hole; 41 - first adhesive layer; 42 - second adhesive layer; 500 - frame; 510 - foaming material supply mechanism; 511 - storage tank; 512 - pumping pump; 513 - discharge pipe; 514 - conveying pipe; 600 - waterproof and breathable film storage mechanism; 610 - storage roller; 620 - mounting seat; 700 - side sealing mechanism; 710 - first annular sealing plate; 720 - second annular sealing plate; 730 - first lifting drive component; 740 - cutting mechanism; 741 - cutting knife; 742 - connecting plate; 743 - second sliding seat; 744 - second transverse movement drive motor; 745 - second screw rod; 746 - limiting groove; 800 - sealing and extrusion forming mechanism; 810 - heating and extrusion component; 811 - first heat insulation plate; 812 - first heat conducting plate; 813 - heating component; 820 - cooling and extrusion component; 821 - second heat conducting plate; 822 - second heat insulation plate; 823 - refrigeration component; 830 - second lifting drive component; 900 - grasping mechanism; 910 - adsorption and clamping component; 911 - third lifting drive component; 913 - adsorbing part; 912 - clamping gap; 914 - air extraction plate; 915 - air extraction cavity; 916 - guiding inclined block; 917 - guiding cavity; 918 - adsorption contact plate; 919 - air extraction hole; 920 - transverse movement drive component; 921 - first transverse movement drive motor; 922 - first rotating screw rod; 923 - first sliding seat; 924 - first guide rod; 1001 - forming cavity. Detailed implementation manners

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above accompanying drawings are intended to cover non-exclusive inclusion.

[0020] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality" is more than two, unless otherwise specifically defined.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0022] In the description of the embodiments of the present application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, or multiple situations exist alone. Additionally, the character " / " in this text generally represents an "or" relationship between the associated objects before and after.

[0023] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "attachment", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0024] The following is a further detailed description of the present invention in conjunction with the attached Figures 1 to 8 This is not intended to limit the present invention.

[0025] As Figure 7 shown, in an embodiment of the present invention, the automotive sound-absorbing cotton includes a sound-absorbing outer layer 11, a first adhesive layer 41, a first foaming layer 21, a waterproof and breathable membrane 3, a second foaming layer 22, a second adhesive layer 42, and a sound-absorbing inner layer 12 that are sequentially stacked.

[0026] The technical solution of the present invention further improves the structural firmness of the sound-absorbing cotton by adopting foaming layers on the inner and outer sides, and combines the sound-absorbing outer layer and the sound-absorbing inner layer on the inner and outer layers to effectively extend the service life of the sound-absorbing and sound-insulating of the sound-absorbing cotton, thereby improving the sound-absorbing effect and efficiency.

[0027] Specifically, in some embodiments, such as Figure 7 and8 As shown, a guiding hole 31 is provided in the waterproof and breathable film 3; the first foaming layer 21 extends through the guiding hole 31; and / or, the second foaming layer 22 extends through the guiding hole 31. That is to say, one or both of the first foaming layer 21 and the second foaming layer 22 can extend into the guiding hole 31 and are in contact and connected to each other as a whole; thereby improving the assembly stability among the first foaming layer 21, the waterproof and breathable film 3, and the second foaming layer 22, and effectively ensuring the sound absorption effect.

[0028] Specifically, in some embodiments, such as Figure 7 and 8 As shown, the waterproof and breathable film 3 is successively provided with arc segments 302 and straight segments 301 along the length direction and / or the width direction. Among them, as Figure 8 shown, the guiding hole 31 is arranged on the straight segment 301; and the number of arc segments 302 is two and they are symmetrically arranged at both ends of the straight segment 301 to form a quasi-inverted U-shaped structure. This structure forms curved contact surfaces on the upper and lower layers through the curved waterproof and breathable film 3, thereby increasing the sound absorption path and further improving the sound absorption effect.

[0029] Specifically, in some embodiments, the sound-absorbing outer layer 11 is made of polyurethane foam or sponge; and / or, the sound-absorbing inner layer 12 is made of polyurethane foam or sponge; and / or, the first adhesive layer 41 is made of sponge glue; and / or, the second adhesive layer 42 is made of sponge glue; and / or, the waterproof and breathable film 3 is made of polytetrafluoroethylene (PTFE) waterproof and breathable film or EPTFE waterproof and breathable film; and / or, the first foaming layer 21 is made of polyurethane foaming material; and / or, the second foaming layer 22 is made of polyurethane foaming material.

[0030] The present invention also provides a forming device for automotive sound-absorbing cotton. This forming device for automotive sound-absorbing cotton is used to produce automotive sound-absorbing cotton. The specific structure of this automotive sound-absorbing cotton refers to the above embodiments. Since this forming device for automotive sound-absorbing cotton adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated one by one here.

[0031] Among them, as Figure 1As shown, the forming device for the automotive sound-absorbing cotton includes a frame 500, a waterproof and breathable film storage mechanism 600, a side sealing mechanism 700, a sealing and extrusion forming mechanism 800, and a grasping mechanism 900; the side sealing mechanism 700 is connected to the frame 500; the sealing and extrusion forming mechanism 800 is connected to the frame 500; and a forming cavity 1001 is provided between the side sealing mechanism 700 and the sealing and extrusion forming mechanism 800; the waterproof and breathable film storage mechanism 600 is connected to the frame 500 and is used for storing the waterproof and breathable film; the grasping mechanism 900 is connected to the frame 500; and the grasping mechanism 900 is used to urge the waterproof and breathable film to pass through the forming cavity 1001 to form at least two foaming cavities.

[0032] The technical solution of the present invention promotes the formation of a partition structure layer of the waterproof and breathable film to be assembled between the side sealing mechanism and the sealing and extrusion forming mechanism through the rapidity of the movement and grasping of the grasping mechanism, which is beneficial to ensuring the orderliness and rapidity of the foam molding, and ensuring the compactness of the overall structure, saving the occupied space of the equipment, thereby improving the production and processing efficiency of the sound-absorbing cotton and reducing the input of manpower and material resources.

[0033] Specifically, in some embodiments, as Figure 1 and 2 shown, the side sealing mechanism 700 includes a first annular sealing plate 710, a second annular sealing plate 720, and a first lifting drive component 730; the installation end of the first lifting drive component 730 is connected to the frame 500; and the movable end of the first lifting drive component 730 is connected to the first annular sealing plate 710 and / or the second annular sealing plate 720; the first annular sealing plate 710 and the second annular sealing plate 720 are arranged side by side along the height direction of the frame 500, and an assembly gap is provided between the first annular sealing plate 710 and the second annular sealing plate 720; the assembly gap is used for clamping and assembling the waterproof and breathable film; the inner side wall of the first annular sealing plate 710, the inner side wall of the second annular sealing plate 720 and the sealing and extrusion forming mechanism 800 form the forming cavity 1001. This structure can ensure the smoothness of the grasping and passing of the waterproof and breathable film by the grasping mechanism through the upper and lower split first annular sealing plate 710 and second annular sealing plate 720; and the waterproof and breathable film is clamped and assembled through the assembly gap between the first annular sealing plate 710 and the second annular sealing plate 720 to avoid excessive misalignment and other phenomena during the forming process or the foaming process; thereby improving the production and processing efficiency. Among them, in some embodiments, as Figure 2As shown, the number of the first lifting drive components 730 is at least two, and one of the first lifting drive components 730 is connected to the first annular sealing plate 710; the other first lifting drive component 730 is connected to the second annular sealing plate 720; to ensure the sealing performance of the clamping during the up and down movement, so as to ensure the orderliness and stability of the foaming process. Further, the first lifting drive component 730 can be a first lifting drive cylinder or a first lifting drive lead screw; preferably a first lifting drive cylinder; a first sealing rubber is provided at the bottom of the first annular sealing plate 710 facing the second annular sealing plate 720; a second sealing rubber is provided at the top of the second annular sealing plate 720 facing the first annular sealing plate 710.

[0034] Specifically, in some embodiments, as Figure 1 and 2 shown, a cutting mechanism 740 is provided on the outer surface of the first annular sealing plate 710 and / or the outer surface of the second annular sealing plate 720; the cutting mechanism 740 includes a cutting knife 741 and a second lateral movement drive assembly; the second lateral movement drive assembly is drivingly connected to the mounting end of the cutting knife 741; the cutting end of the cutting knife 741 extends to the assembly gap. That is to say, the cutting mechanism 740 is added to one or both of the first annular sealing plate 710 and the second annular sealing plate 720 to cut the grabbed waterproof and breathable film 3, so as to reach the required length value, thereby improving the smoothness and stability of the operation and improving the operation efficiency.

[0035] Among them, in some embodiments, as Figure 2 and 6 shown, when the cutting mechanism 740 is provided on the second annular sealing plate 720, the second lateral movement drive assembly includes a connecting plate 742, a second sliding seat 743, a second lateral movement drive motor 744 and a second screw 745; the second lateral movement drive motor 744 is connected to the outer surface of the second annular sealing plate 720 and is connected to one end of the second screw 745; the other end of the second screw 745 is movably connected to the outer surface of the second annular sealing plate 720; the second sliding seat 743 is slidably connected to the outer surface of the second screw 745; one end of the connecting plate 742 is connected to the second sliding seat 743; the other end of the connecting plate 742 is connected to the cutting knife 741. Further, as Figure 6 shown, a limiting groove 746 is also provided on the outer surface of the second annular sealing plate 720; the inner end of the connecting plate 742 is movably connected to the limiting groove 746 through a first limiting rod (T-shaped or F-shaped or L-shaped). In addition, when the cutting mechanism 740 is provided on the first annular sealing plate 710, the structural features of the second lateral movement drive assembly are also the same as above.

[0036] Specifically, in some embodiments, such as Figure 1 and 2 shown, a foaming material supply mechanism 510 is further provided on the frame 500; the foaming material supply mechanism 510 includes a storage tank 511, a pumping pump 512, a discharge pipe 513 and a delivery pipe 514; the storage tank 511 is connected to the frame 500; one end of the delivery pipe 514 is communicated with the storage tank 511; the other end of the delivery pipe 514 is communicated with the inlet of the pumping pump 512; the pumping pump 512 is connected to the outer surface of the first annular sealing plate 710 or the outer surface of the second annular sealing plate 720; the discharge port of the pumping pump 512 is communicated with one end of the discharge pipe 513; the other end of the discharge pipe 513 passes through the first annular sealing plate 710 or the second annular sealing plate 720 and is communicated with the foaming cavity. Wherein, in some embodiments, the number of the foaming material supply mechanisms 510 is two, and they are respectively communicated with the inside of the first annular sealing plate 710 or the inside of the second annular sealing plate 720. Under the pumping action of the pumping pump 512, the stability and orderliness of the transportation of the foaming raw materials are improved in this structure.

[0037] Specifically, in some embodiments, such as Figure 1 and 2 shown, the sealing and extrusion forming mechanism 800 includes a heating and extrusion component 810, a cooling and extrusion component 820 and at least one second lifting drive component 830; the heating and extrusion component 810 and the cooling and extrusion component 820 are arranged side by side along the height direction of the frame 500 (wherein, the heating and extrusion component 810 is arranged above the cooling and extrusion component 820); the installation end of the second lifting drive component 830 is connected to the frame 500; and the movable end of each second lifting drive component 830 is connected to the heating and extrusion component 810 or the cooling and extrusion component 820; a forming cavity 1001 is formed between the heating and extrusion component 810, the cooling and extrusion component 820 and the side sealing mechanism 700 (the first annular sealing plate 710 and the second annular sealing plate 720). Wherein, as Figure 2As shown, the number of the second lifting drive components 830 is at least two. One of the second lifting drive components 830 is connected to the heating and extrusion component 810; the other second lifting drive component 830 is connected to the cooling and extrusion component 820. That is to say, during the heating and foaming molding, the refrigeration function of the cooling and extrusion component 820 is turned off and it acts as a support unit; while the heating function of the heating and extrusion component 810 is started. Therefore, a molding cavity 1001 is formed by the heating and extrusion component 810, the cooling and extrusion component 820, the first annular sealing plate 710 and the second annular sealing plate 720, and through the separation effect of the waterproof and breathable membrane 3, the heating and foaming operation from top to bottom is realized. When the heating and foaming molding is completed, the heating function of the heating and extrusion component 810 is turned off and the refrigeration function of the cooling and extrusion component 820 is started to realize the cooling and molding process from bottom to top. Therefore, this structure can improve the fluency of operation, effectively reduce the space occupation, and improve the overall compactness. Further, the second lifting drive component 830 can be a second lifting drive cylinder or a second lifting drive lead screw; preferably a second lifting drive cylinder.

[0038] Specifically, in some embodiments, as Figure 2 and 5 shown, the heating and extrusion component 810 includes a first heat insulation plate 811, a first heat conduction plate 812 and a heating component 813; one side surface of the first heat insulation plate 811 is connected to the second lifting drive component 830; the first heat conduction plate 812 is connected to the other side surface of the first heat insulation plate 811 away from the second lifting drive component 830; the heating component 813 is connected to the first heat conduction plate 812; and the heating end of the heating component 813 is in contact with the first heat conduction plate 812. Among them, the first heat conduction plate 812 can be a first heat conduction metal plate (such as stainless steel, etc.); the first heat insulation plate 811 can be a rock wool board or an aerogel board. Further, the heating component 813 is a heating tube or a heating filament lamp. This structure directly conducts and heats the first heat conduction plate 812 through the heating component 813, which is beneficial to the heat conduction of the two foaming cavities, and thus improves the production and processing efficiency.

[0039] Specifically, in some embodiments, as Figure 2 and 5As shown, the cooling and extrusion component 820 includes a second heat-conducting plate 821, a second heat-insulating plate 822, and a refrigeration component 823; one side surface of the second heat-insulating plate 822 is connected to the second lifting drive component 830; the second heat-conducting plate 821 is connected to the other side surface of the second heat-insulating plate 822 away from the second lifting drive component 830; the refrigeration component 823 is connected to the second heat-conducting plate 821; and the refrigeration end of the refrigeration component 823 is in abutting contact with the second heat-conducting plate 821. Among them, the second heat-conducting plate 821 can be a second heat-conducting metal plate (such as stainless steel, etc.); the second heat-insulating plate 822 can be a rock wool board or an aerogel board. Further, the refrigeration component 823 is a refrigeration pipe; the inside of the refrigeration pipe is used to transport a refrigerating liquid or a refrigerating gas; and the refrigeration pipe is used to be assembled and connected to a refrigeration system composed of equipment such as a compressor, a condenser, an expansion valve, an evaporator, a fan, and a condenser drainage system; this refrigeration system is arranged on the frame 500. This structure directly conducts the refrigeration effect on the second heat-conducting plate 821 through the cooling and extrusion component 820, which is beneficial to the heat conduction of the two foaming cavities towards the refrigeration component 823, thereby improving the production and processing efficiency.

[0040] Specifically, in some embodiments, as Figure 1 and 2 shown, the grasping mechanism 900 includes an adsorption and clamping component 910 and a lateral movement drive component 920; the lateral movement drive component 920 is connected to the frame 500 and is drivingly connected to the adsorption and clamping component 910 so that the adsorption and clamping component 910 moves back and forth towards or away from the waterproof and breathable film storage mechanism 600. This structure realizes the grasping and pulling movement of the waterproof and breathable film 3 under the driving action of the lateral movement drive component, which is beneficial to improving the fluency of the operation.

[0041] Specifically, in some embodiments, as Figure 2 and 3 shown, the adsorption and clamping component 910 includes a third lifting drive component 911 and at least two adsorbing parts 913; the third lifting drive component 911 is connected to the lateral movement drive component 920 and is connected to all the adsorbing parts 913; all the adsorbing parts 913 are arranged in an array; and a clamping gap 912 is provided between two adjacent adsorbing parts 913 in the same vertical direction; the clamping gap 912 is used to clamp the waterproof and breathable film 3. Among them, the third lifting drive component 911 can be a double-headed telescopic cylinder. Among them, in some embodiments, as Figure 3 and 4As shown, the adsorbing member 913 includes an air extraction plate 914, a guiding inclined block 916, and an adsorption contact plate 918; the outer surface of the air extraction plate 914 is connected to the movable end of the third lifting driving member 911; an air extraction cavity 915 is provided in the air extraction plate 914; the air extraction cavity 915 is used to communicate with an air extraction pump; the guiding inclined block 916 is connected to one side surface of the air extraction plate 914; and a guiding cavity 917 is provided in the guiding inclined block 916; one end of the guiding cavity 917 is communicated with the air extraction cavity 915; the adsorption contact plate 918 is connected to the other side surface of the guiding inclined block 916 away from the air extraction plate 914; at least one air extraction hole 919 is provided through the thickness direction of the adsorption contact plate 918; the air extraction hole 919 is communicated with the other end of the guiding cavity 917. Further, as Figure 4 shown, the cross-sectional area of one end of the guiding cavity 917 facing the adsorption contact plate 918 is larger than the cross-sectional area of one end of the guiding cavity 917 facing the air extraction plate 914, so as to increase the amount of air extraction and ensure that the suction force can grasp the waterproof and breathable film 3; and the adsorption acting force on the waterproof and breathable film 3 can be ensured and damage to the waterproof and breathable film 3 can be avoided through a plurality of air guiding holes 919 and the flat adsorption contact plate 918.

[0042] Specifically, in some embodiments, as Figure 2 and 3 shown, the transverse movement driving member 920 includes a first transverse movement driving motor 921, a first rotating screw 922, and a first sliding seat 923; the first transverse movement driving motor 921 is connected to the frame 500 and is drivingly connected to one end of the first rotating screw 922; the other end of the first rotating screw 922 is movably connected to the frame 500; the first sliding seat 923 is movably connected to the first rotating screw 922; and the first sliding seat 923 is connected to the adsorption and clamping member 910. Among them, as Figure 3 shown, the transverse movement driving member 920 further includes a first guide rod 924; the first guide rod 924 is arranged on the frame 500; and the side end of the first sliding seat 923 is movably connected to the outer surface of the first guide rod 924.

[0043] Specifically, in some embodiments, as Figure 1 and 2 shown, the waterproof and breathable film storage mechanism 600 includes a storage roller 610 and at least two mounting seats 620; the left and right ends of the storage roller 610 are respectively connected to two different mounting seats 620; the mounting seats 620 are connected to the frame 500; and the storage roller 610 is used to store the waterproof and breathable film 3. Through the rotation and feeding performance of the storage roller 610, this structure can reduce the use of power sources and ensure the orderliness and smoothness of feeding.

[0044] The present invention also provides a method for preparing an automotive sound-absorbing cotton, which is executed by operating a forming device for the automotive sound-absorbing cotton; and is used for preparing the automotive sound-absorbing cotton. The technical features of the automotive sound-absorbing cotton and the forming device for the automotive sound-absorbing cotton refer to the above embodiments. Since the method for preparing the automotive sound-absorbing cotton adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated one by one here.

[0045] Among them, the method for preparing the automotive sound-absorbing cotton includes the following steps: S1. Transfer the sound-absorbing inner layer 12 to the inner bottom of the sealed extrusion forming mechanism 800; among them, a second adhesive layer 42 is adhered to one side surface of the sound-absorbing inner layer 12. S2. Drive the grasping mechanism 900 to the waterproof and breathable film storage mechanism 600 to grasp the waterproof and breathable film 3 through the side sealing mechanism 700 and the sealed extrusion forming mechanism 800. S3. Drive the forming cavity 1001 between the side sealing mechanism 700 and the sealed extrusion forming mechanism 800 respectively to form two foaming cavities on the upper and lower sides; among them, drive two different first lifting drive components 730 on the upper and lower sides of the side sealing mechanism 700 to make the first annular sealing plate 710 and the second annular sealing plate 720 in the side sealing mechanism 700 move towards each other along the height direction; at the same time, drive two different second lifting drive components 830 on the upper and lower sides of the sealed extrusion forming mechanism 800 to make the heating extrusion component 810 and the cooling extrusion component 820 in the sealed extrusion forming mechanism 800 move towards each other along the height direction; thereby forming the forming cavity 1001 and two foaming cavities on its upper and lower sides. S4. Inject foaming raw materials into the foaming cavities respectively, and perform heating foaming treatment and cooling forming treatment to form a first foaming layer 21 and a second foaming layer 22 on the upper and lower sides of the waterproof and breathable film; among them, the heating foaming treatment includes that the heating temperature in the middle is lower than the heating temperature at the circumferential side end to form an arc section 302 and a straight section 301 arranged in sequence along the length direction and / or the width direction. S5. Drive the sealed extrusion forming mechanism 800 to open the forming cavity 1001; and transfer the sound-absorbing outer layer 11 to the upper first foaming layer 21; among them, a first adhesive layer 41 is adhered to one side surface of the sound-absorbing outer layer 11; further, drive the second lifting drive component 830 at the upper end in the sealed extrusion forming mechanism 800 to make the heating extrusion component 810 in the sealed extrusion forming mechanism 800 move in the reverse direction away from the cooling extrusion component 820 along the height direction to realize opening the forming cavity 1001. S6. Drive the sealing and extrusion forming mechanism 800 to close the forming cavity 1001 and extrude the sound-absorbing outer layer 11, thereby forming an automotive sound-absorbing cotton with the sound-absorbing outer layer 11, the first adhesive layer 41, the first foaming layer 21, the waterproof and breathable membrane 3, the second foaming layer 22, the second adhesive layer 42 and the sound-absorbing inner layer 12 stacked in sequence. Among them, the second lifting drive component 830 at the upper end in the driving sealing and extrusion forming mechanism 800 enables the heating and extrusion component 810 in the sealing and extrusion forming mechanism 800 to move away from the cooling and extrusion component 820 in the height direction in an opposite movement to close the forming cavity 1001; at the same time, start the heating function of the heating and extrusion component 810 to extrude and heat the sound-absorbing outer layer 11, thereby forming an automotive sound-absorbing cotton with the sound-absorbing outer layer 11, the first adhesive layer 41, the first foaming layer 21, the waterproof and breathable membrane 3, the second foaming layer 22, the second adhesive layer 42 and the sound-absorbing inner layer 12 stacked in sequence.

[0046] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0047] According to the disclosure and teachings of the above specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the above specific embodiments, and any obvious improvements, substitutions or variations made by those skilled in the art based on the present invention all fall within the protection scope of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims

1. A forming device for automotive sound-absorbing cotton, characterized in that: It includes a frame, a waterproof and breathable film storage mechanism, a side sealing mechanism, a sealing extrusion forming mechanism and a grasping mechanism; the side sealing mechanism is connected to the frame; the sealing extrusion forming mechanism is connected to the frame; and there is a forming cavity between the side sealing mechanism and the sealing extrusion forming mechanism; the waterproof and breathable film storage mechanism is connected to the frame and is used for storing the waterproof and breathable film; the grasping mechanism is connected to the frame; and the grasping mechanism is used to urge the waterproof and breathable film to pass through the forming cavity to form at least two foaming cavities.

2. The forming device for the automotive sound-absorbing cotton according to claim 1, characterized in that: The side sealing mechanism includes a first annular sealing plate, a second annular sealing plate and a first lifting drive component; The mounting end of the first lifting drive component is connected to the frame; and the movable end of the first lifting drive component is connected to the first annular sealing plate and / or the second annular sealing plate; there is an assembly gap between the first annular sealing plate and the second annular sealing plate; the assembly gap is used for clamping and assembling the waterproof and breathable film; the forming cavity is formed between the inner side walls of the first annular sealing plate, the inner side walls of the second annular sealing plate and the sealing extrusion forming mechanism.

3. The forming device for the automotive sound-absorbing cotton according to claim 2, characterized in that: A cutting mechanism is provided on the outer surface of the first annular sealing plate and / or the outer surface of the second annular sealing plate; The cutting mechanism includes a cutting knife and a second transverse movement drive assembly; The second transverse movement drive assembly is drivingly connected to the mounting end of the cutting knife; the cutting end of the cutting knife extends to the assembly gap.

4. The forming device for the automotive sound-absorbing cotton according to claim 2 or 3, characterized in that: A foaming material supply mechanism is further provided on the frame; the foaming material supply mechanism includes a storage tank, a pumping pump, a discharge pipe and a delivery pipe; the storage tank is connected to the frame; one end of the delivery pipe is communicated with the storage tank; the other end of the delivery pipe is communicated with the inlet of the pumping pump; the pumping pump is connected to the outer surface of the first annular sealing plate or the outer surface of the second annular sealing plate; the discharge port of the pumping pump is communicated with one end of the discharge pipe; the other end of the discharge pipe passes through the first annular sealing plate or the second annular sealing plate and is communicated with the foaming cavity.

5. The forming device for the automotive sound-absorbing cotton according to claim 1 or 2, characterized in that: The sealing extrusion forming mechanism includes a heating extrusion component, a cooling extrusion component and at least one second lifting drive component; The mounting end of the second lifting drive component is connected to the frame; and the movable end of each second lifting drive component is connected to the heating extrusion component or the cooling extrusion component; the forming cavity is formed between the heating extrusion component, the cooling extrusion component and the side sealing mechanism.

6. The forming device for the automotive sound-absorbing cotton according to claim 1, characterized in that: The grasping mechanism includes an adsorption clamping component and a transverse movement drive component; the transverse movement drive component is connected to the frame and is drivingly connected to the adsorption clamping component to enable the adsorption clamping component to move back and forth towards or away from the waterproof and breathable film storage mechanism.

7. The forming device for the automotive sound-absorbing cotton according to claim 1, wherein: The waterproof and breathable film storage mechanism includes a storage roller and at least two mounting seats; the left and right ends of the storage roller are respectively connected to two different mounting seats; the mounting seats are connected to the frame; and the storage roller is used for storing the waterproof and breathable film.

8. An automotive sound-absorbing cotton, characterized in that: The automotive sound-absorbing cotton is processed by using the forming device for automotive sound-absorbing cotton according to any one of the above-mentioned claims 1 to 7; and the automotive sound-absorbing cotton includes a sound-absorbing outer layer, a first adhesive layer, a first foaming layer, a waterproof and breathable membrane, a second foaming layer, a second adhesive layer, and a sound-absorbing inner layer that are sequentially stacked.

9. The automotive sound-absorbing cotton according to claim 8, characterized in that: The waterproof and breathable membrane is provided with guide holes; the first foaming layer extends through the guide holes; and / or, the second foaming layer extends through the guide holes.

10. A preparation method of automotive sound-absorbing cotton, characterized in that: Use the forming device for automotive sound-absorbing cotton according to any one of the above-mentioned claims 1 to 7 to execute the preparation method of the automotive sound-absorbing cotton; and the preparation method of the automotive sound-absorbing cotton includes: S1. Transfer the sound-absorbing inner layer to the inner bottom of the sealed extrusion forming mechanism; wherein, a second adhesive layer is adhered to one side surface of the sound-absorbing inner layer. S2. Drive the grasping mechanism to the waterproof and breathable membrane storage mechanism to grasp the waterproof and breathable membrane through the side sealing mechanism and the sealed extrusion forming mechanism. S3. Drive the forming cavity between the side sealing mechanism and the sealed extrusion forming mechanism respectively to form two foaming cavities on the upper and lower sides. S4. Inject foaming raw materials into the foaming cavities respectively, and perform heat foaming treatment and cooling forming treatment to form a first foaming layer and a second foaming layer on the upper and lower sides of the waterproof and breathable membrane. S5. Drive the sealed extrusion forming mechanism to open the forming cavity; and transfer the sound-absorbing outer layer to the upper first foaming layer; wherein, a first adhesive layer is adhered to one side surface of the sound-absorbing outer layer. S6. Drive the sealed extrusion forming mechanism to close the forming cavity and extrude the sound-absorbing outer layer, thereby forming an automotive sound-absorbing cotton with a sound-absorbing outer layer, a first adhesive layer, a first foaming layer, a waterproof and breathable membrane, a second foaming layer, a second adhesive layer, and a sound-absorbing inner layer that are sequentially stacked.

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