A core composite molding apparatus

By improving the structure and process of the core composite molding equipment, the efficient preparation of multi-layer core structures has been achieved, solving the shortcomings of traditional equipment in the entry of polymers into fluffy cotton and the control of basis weight, thus improving the core quality and equipment efficiency.

CN224484332UActive Publication Date: 2026-07-14QUANZHOU XINCHANG PRECISION MASCH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
QUANZHOU XINCHANG PRECISION MASCH CO LTD
Filing Date
2025-04-24
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Traditional core composite molding equipment is limited in its use on high-speed online cores. It is difficult for polymers to penetrate fluffy cotton and it is difficult to accurately control the basis weight and layer structure combination, resulting in unstable core quality.

Method used

A core composite molding equipment, including an intermediate layer conveying mechanism, upper and lower layer conveying mechanisms, negative pressure mold wheels and adhesive spraying mechanism, is used to adsorb polymers through negative pressure mold wheels and spray adhesive onto the surface of the intermediate layer. Combined with phase control and dust removal, this achieves efficient preparation of multi-layer core structures.

Benefits of technology

It has achieved efficient fabrication of multi-layer core structures, improved core quality, reduced costs, and met customization requirements. At the same time, the equipment has a compact structure and a small footprint.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224484332U_ABST
Patent Text Reader

Abstract

This utility model discloses a core composite molding device, relating to the technical field of hygiene product manufacturing equipment. It includes an intermediate layer conveying mechanism, a first negative pressure molding wheel, an upper layer conveying mechanism, a second negative pressure molding wheel, and a lower layer conveying mechanism. The intermediate layer conveying mechanism guides the intermediate layer to the first negative pressure molding wheel, where polymer is drawn into the interior of the intermediate layer. The upper layer conveying mechanism guides the upper layer to the surface of the intermediate layer, where it is adhered to the surface by an upper layer composite roller. The first negative pressure molding wheel rotates to flip the intermediate layer and cooperates with the second negative pressure molding wheel to continue transferring the intermediate layer, where polymer is drawn into the interior of the intermediate layer. The lower layer conveying mechanism guides the lower layer to the surface of the intermediate layer, where it is adhered to the surface by a lower layer composite roller. This utility model optimizes the overall architecture of the core composite molding device, enabling the formation of 4-layer or 5-layer core structures in a single machine.
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Description

Technical Field

[0001] This utility model relates to the technical field of hygiene product production equipment, specifically a core composite molding equipment. Background Technology

[0002] Common disposable hygiene products include diapers, whose structure includes a moisture-absorbing core layer. The stability of the core layer's quality determines the product's effectiveness. Traditional core composite molding equipment is limited in its structural design, making it difficult to use the core on high-speed lines. Polymers struggle to penetrate the fluffy cotton, and the basis weight cannot be precisely guaranteed. This hinders the efficient selection and combination of different core layer structures. Based on these limitations, the inventors proposed this solution. Utility Model Content

[0003] This invention provides a core composite molding equipment that overcomes the shortcomings described in the background art.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A core composite molding device includes an intermediate layer conveying mechanism for transporting an intermediate layer, a first negative pressure mold wheel for spreading a first layer of polymer, an upper layer conveying mechanism for transporting an upper layer, a second negative pressure mold wheel for spreading a second layer of polymer, and a lower layer conveying mechanism for transporting a lower layer. Both the first and second negative pressure mold wheels are equipped with polymer storage chambers. The intermediate layer conveying mechanism guides the intermediate layer to the first negative pressure mold wheel. The polymer storage chambers release polymer, which is then drawn into the intermediate layer by the first negative pressure mold wheel. The upper conveying mechanism guides the upper layer to the surface of the middle layer. During the transfer of the upper layer, an upper adhesive spraying mechanism sprays adhesive onto its surface, and an upper composite roller adheres the upper layer to the surface of the middle layer. The first negative pressure mold wheel rotates to flip the middle layer and cooperates with the second negative pressure mold wheel to continue transferring the middle layer. The second negative pressure mold wheel draws the polymer into the interior of the middle layer. The lower conveying mechanism guides the lower layer to the surface of the middle layer. During the transfer of the lower layer, a lower adhesive spraying mechanism sprays adhesive onto its surface, and a lower composite roller adheres the lower layer to the surface of the middle layer.

[0006] In some embodiments, the intermediate layer conveying mechanism includes an intermediate layer transmission mechanism and an intermediate layer correction mechanism, wherein the intermediate layer correction mechanism is located at the rear end of the intermediate layer transmission mechanism.

[0007] In some embodiments, the upper conveying mechanism includes an upper transmission mechanism and an upper correction mechanism, wherein the upper correction mechanism is located at the rear end of the upper transmission mechanism.

[0008] In some embodiments, the lower conveying mechanism includes a lower transmission mechanism and a lower correction mechanism, wherein the lower correction mechanism is located at the rear end of the lower transmission mechanism.

[0009] In some embodiments, the core composite molding equipment further includes a wrapping mechanism located at the rear end of the second negative pressure molding wheel.

[0010] In some embodiments, the core composite molding equipment further includes a wrapping layer conveying mechanism for transporting the wrapping layer, the wrapping layer conveying mechanism guiding the wrapping layer to the wrapping mechanism, the wrapping layer being sprayed with adhesive on its surface by a wrapping layer adhesive spraying mechanism during the transfer process, and then wrapped and molded by the wrapping mechanism.

[0011] In some embodiments, the wrapping layer conveying mechanism includes a wrapping layer transmission mechanism and a wrapping layer correction mechanism, wherein the wrapping layer correction mechanism is located at the rear end of the wrapping layer transmission mechanism.

[0012] In some embodiments, the feeding direction of the intermediate layer conveying mechanism, the upper layer conveying mechanism, and the lower layer conveying mechanism is either vertical or horizontal. In practical applications, the horizontal and vertical feeding directions can be adjusted and selected without affecting the operation of the core structure in the core composite molding equipment.

[0013] In some implementations, phase control is performed between the first negative pressure mold wheel and the second negative pressure mold wheel.

[0014] In some embodiments, the core composite molding equipment further includes a dust removal wheel and a dust collection trough. The dust collection trough is installed at the bottom or bottom side of the first negative pressure molding wheel and the second negative pressure molding wheel, and the dust removal wheel is installed at the side of the first negative pressure molding wheel.

[0015] By adopting the above technical solution, the beneficial effects of this utility model are:

[0016] 1. This utility model optimizes the overall architecture of the core composite molding equipment, enabling one machine to produce a 4-layer core structure or a 5-layer core structure. At the same time, the lower conveying mechanism can select 3 different feeding methods, which, together with the other structures, can be switched to produce a 4-layer core structure or a 5-layer core structure.

[0017] 2. Due to the optimization of the feeding method and structure, the core composite molding equipment of this utility model has a more compact overall structure and occupies a smaller area.

[0018] 3. This utility model is equipped with two negative pressure mold wheels working together, and the first negative pressure mold wheel and the second negative pressure mold wheel are phase controlled. During high-speed operation (200-350 m / min), the quality of the prepared core is improved, the core cost is reduced, and the customer's requirements for core customization are met. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 A simplified structural diagram of a core composite molding equipment;

[0021] Figure 2 This is a schematic diagram of the core product in Example 1;

[0022] Figure 3 These are schematic diagrams of the core products in Examples 2 and 3;

[0023] Figure 4 This is a schematic diagram of the core composite molding equipment.

[0024] Explanation of key figure labels:

[0025] 1. Intermediate layer conveying mechanism; 11. Intermediate layer transmission mechanism; 12. Intermediate layer correction mechanism; 2. First negative pressure mold wheel; 21. Polymer chamber; 3. Upper layer conveying mechanism; 31. Upper layer glue spraying mechanism; 32. Upper layer composite roller; 33. Upper layer transmission mechanism; 34. Upper layer correction mechanism; 4. Second negative pressure mold wheel; 5. Lower layer conveying mechanism; 51. Lower layer glue spraying mechanism; 52. Lower layer composite roller; 53. Lower layer transmission mechanism; 54. Lower layer correction mechanism; 6. Wrapping mechanism; 7. Wrapping layer conveying mechanism; 71. Wrapping layer glue spraying mechanism; 72. Wrapping layer transmission mechanism; 73. Wrapping layer correction mechanism; 8. Dust removal wheel; 9. Dust collection trough; 100. Intermediate layer; 101. Upper layer; 102. Lower layer; 103. Wrapping layer. Detailed Implementation

[0026] like Figures 1-4As shown, this utility model provides a core composite molding device, including an intermediate layer conveying mechanism 1 for conveying an intermediate layer 100, a first negative pressure mold wheel 2 for spreading polymers, an upper layer conveying mechanism 3 for conveying an upper layer 101, a second negative pressure mold wheel 4 for spreading polymers, and a lower layer conveying mechanism 5 for conveying a lower layer 102. The first negative pressure mold wheel 2 and the second negative pressure mold wheel 4 are each equipped with two polymer chambers 21 for storing polymers. The intermediate layer conveying mechanism 1 guides the intermediate layer 100 to the first negative pressure mold wheel 2. The polymer chambers 21 release polymers, which are then drawn into the interior of the intermediate layer 100 by the first negative pressure mold wheel 2. The upper layer conveying mechanism... 3. The upper layer 101 is guided to the surface of the middle layer 100. During the transfer of the upper layer 101, the upper layer spraying mechanism 31 sprays adhesive on its surface and the upper layer composite roller 32 adheres the upper layer 101 to the surface of the middle layer 100. The first negative pressure mold wheel 2 rotates to flip the middle layer 100 and cooperates with the second negative pressure mold wheel 4 to continue transferring the middle layer 100. The second negative pressure mold wheel 4 sucks the polymer into the middle layer 100. The lower layer conveying mechanism 5 guides the lower layer 102 to the surface of the middle layer 100. During the transfer of the lower layer 102, the lower layer spraying mechanism 51 sprays adhesive on its surface and the lower layer composite roller 52 adheres the lower layer 102 to the surface of the middle layer 100.

[0027] According to some embodiments of the present invention, optionally, the intermediate layer conveying mechanism 1 includes an intermediate layer transmission mechanism 11 and an intermediate layer correction mechanism 12, with the intermediate layer correction mechanism 12 located at the rear end of the intermediate layer transmission mechanism 11.

[0028] According to some embodiments of the present invention, optionally, the upper conveying mechanism 3 includes an upper transmission mechanism 33 and an upper correction mechanism 34, with the upper correction mechanism 34 located at the rear end of the upper transmission mechanism 33.

[0029] According to some embodiments of the present invention, optionally, the lower conveying mechanism 5 includes a lower transmission mechanism 53 and a lower correction mechanism 54, with the lower correction mechanism 54 located at the rear end of the lower transmission mechanism 53.

[0030] According to some embodiments of the present invention, the core composite molding equipment may optionally include a wrapping mechanism 6, which is located at the rear end of the second negative pressure mold wheel 4.

[0031] According to some embodiments of the present invention, optionally, the core composite molding equipment further includes a wrapping layer conveying mechanism 7 for conveying the wrapping layer 103. The wrapping layer conveying mechanism 7 guides the wrapping layer 103 to the wrapping mechanism 6. During the transfer process, the wrapping layer 103 is sprayed with adhesive by the wrapping layer spraying mechanism 71 and then wrapped and molded by the wrapping mechanism 6.

[0032] According to some embodiments of the present invention, optionally, the wrapping layer conveying mechanism 7 includes a wrapping layer transmission mechanism 72 and a wrapping layer correction mechanism 73, with the wrapping layer correction mechanism 73 located at the rear end of the wrapping layer transmission mechanism 72.

[0033] According to some embodiments of the present invention, optionally, the feeding direction of the intermediate layer conveying mechanism 1, the upper layer conveying mechanism 3, and the lower layer conveying mechanism 5 is either vertical or horizontal.

[0034] For example, the feeding direction of the intermediate layer conveyor 1, the upper layer conveyor 3, and the lower layer conveyor 5 is vertical; another example is that the feeding direction of the intermediate layer conveyor 1 and the upper layer conveyor 3 is vertical, while the feeding direction of the lower layer conveyor 5 is horizontal.

[0035] According to some embodiments of this utility model, optionally, the core composite molding equipment further includes a dust removal wheel 8 and a dust collection tank 9. The dust collection tank 9 is installed at the bottom end or bottom side end of the first negative pressure molding wheel 2 and the second negative pressure molding wheel 4, and the dust removal wheel 8 is installed at the side end of the first negative pressure molding wheel 2. The dust removal wheel 8 is used to remove dust from the surface of some layers during the core preparation process, and the dust collection tank 9 is used to collect dust generated inside the core composite molding equipment during the preparation process.

[0036] In the core composite molding equipment of this utility model, the middle layer 100 is usually made of fluffy cotton. The layer conveyed by the upper conveying mechanism 3 can be selected as dust-free paper or non-woven fabric according to the requirements of the equipment to process the core structure. The layer conveyed by the lower conveying mechanism 5 can be selected as dust-free paper or non-woven fabric according to the requirements of the equipment to process the core structure. The wrapping layer 103 conveyed by the wrapping layer conveying mechanism 7 is usually made of non-woven fabric.

[0037] Example 1

[0038] like Figures 1-2As shown, this embodiment provides a core composite molding device, including an intermediate layer conveying mechanism 1 for conveying an intermediate layer 100, a first negative pressure mold wheel 2 for spreading polymers, an upper layer conveying mechanism 3 for conveying an upper layer 101, a second negative pressure mold wheel 4 for spreading polymers, and a lower layer conveying mechanism 5 for conveying a lower layer 102. Both the first negative pressure mold wheel 2 and the second negative pressure mold wheel 4 are equipped with polymer storage chambers 21, with each negative pressure mold wheel having two polymer storage chambers 21. The intermediate layer conveying mechanism 1 guides the intermediate layer 100 to the first negative pressure mold wheel 2, where polymers are released from the polymer storage chambers 21 and drawn into the intermediate layer 100 by the first negative pressure mold wheel 2. In the middle layer 100, the upper layer conveying mechanism 3 guides the upper layer 101 to the surface of the middle layer 100. During the transfer of the upper layer 101, the upper layer adhesive spraying mechanism 31 sprays adhesive onto its surface, and the upper layer composite roller 32 adheres the upper layer 101 to the surface of the middle layer 100. The first negative pressure mold wheel 2 rotates to flip the middle layer 100 and cooperates with the second negative pressure mold wheel 4 to continue transferring the middle layer 100. The second negative pressure mold wheel 4 draws the polymer into the middle layer 100. The lower layer conveying mechanism 5 guides the lower layer 102 to the surface of the middle layer 100. During the transfer of the lower layer 102, the lower layer adhesive spraying mechanism 51 sprays adhesive onto its surface, and the lower layer composite roller 52 adheres the lower layer 102 to the surface of the middle layer 100. The middle layer conveying mechanism 1 includes a middle layer transmission mechanism 11 and a middle layer correction mechanism 12, with the middle layer correction mechanism 12 located at the rear end of the middle layer transmission mechanism 11. The upper conveying mechanism 3 includes an upper transmission mechanism 33 and an upper correction mechanism 34, with the upper correction mechanism 34 located at the rear end of the upper transmission mechanism 33. The lower conveying mechanism 5 includes a lower transmission mechanism 53 and a lower correction mechanism 54, with the lower correction mechanism 54 located at the rear end of the lower transmission mechanism 53. The core composite molding equipment also includes a wrapping mechanism 6, located at the rear end of the second negative pressure mold wheel 4.

[0039] The core composite molding equipment also includes a dust removal wheel 8 and a dust collection tank 9. The dust collection tank 9 is installed at the bottom or bottom side of the first negative pressure molding wheel 2 and the second negative pressure molding wheel 4, and the dust removal wheel 8 is installed at the side of the first negative pressure molding wheel 2.

[0040] In this embodiment, the feeding direction of the intermediate layer conveying mechanism 1, the upper layer conveying mechanism 3, and the lower layer conveying mechanism 5 of the core composite molding equipment is vertical.

[0041] Taking the finished product produced by the core composite molding equipment as an example, which includes an upper layer 101 (dust-free paper), a middle layer 100 (fluffy cotton), and a lower layer 102 (non-woven fabric), the dust-free paper is transported by the upper layer conveying mechanism 3, the fluffy cotton is transported by the middle layer conveying mechanism 1, and the non-woven fabric is transported by the lower layer conveying mechanism 5.

[0042] Reference Figure 1The fluffy cotton is transported through the intermediate layer transmission mechanism 11, corrected by the intermediate layer correction mechanism 12, and enters the first negative pressure mold wheel 2. The polymer chamber 21 on the first negative pressure mold wheel 2 opens and sends out polymer, which enters the fluffy cotton through the negative pressure principle. The upper layer transmission mechanism 33 transports the dust-free paper, corrects it through the upper layer correction mechanism 34, and then the upper layer glue spraying mechanism 31 sprays glue on the dust-free paper. The glued dust-free paper adheres to the intermediate layer 100 and is rolled and laminated by the upper layer composite roller 32 to form a two-layer structure. The two-layer structure is flipped over by the first negative pressure mold wheel 2 and enters the second negative pressure mold wheel 2. The pressure roller 4 feeds the polymer into the other side of the fluffy cotton; the nonwoven fabric is fed vertically downwards into the equipment, that is, it enters at a 90-degree angle, and then passes to the left through several rollers, so that the nonwoven fabric successively passes around the first negative pressure roller 2, the lower transmission mechanism 53, and the lower correction mechanism 54, and is sprayed with adhesive on the surface of the nonwoven fabric by the lower adhesive spraying mechanism 51, and guided to the second negative pressure roller 4, where the lower composite roller 52 adheres the nonwoven fabric to the surface of the middle layer 100; finally, it is wrapped by the wrapping mechanism 6 to form the core finished structure, which is shown in the figure below. Figure 2 .

[0043] Example 2

[0044] like Figure 1 , Figure 3 As shown, this embodiment provides a core composite molding device. The structural difference between the core composite molding device in this embodiment and the core composite molding device in Embodiment 1 is that this core composite molding device further includes a wrapping layer conveying mechanism 7 for transporting the wrapping layer 103. The wrapping layer conveying mechanism 7 guides the wrapping layer 103 to the wrapping mechanism 6. During the transfer process, the wrapping layer 103 is sprayed with adhesive by the wrapping layer adhesive spraying mechanism 71 and then wrapped and molded by the wrapping mechanism 6. The wrapping layer conveying mechanism 7 includes a wrapping layer transmission mechanism 72 and a wrapping layer correction mechanism 73. The wrapping layer correction mechanism 73 is located at the rear end of the wrapping layer transmission mechanism 72.

[0045] The feeding direction of the intermediate layer conveying mechanism 1, the upper layer conveying mechanism 3, and the lower layer conveying mechanism 5 is vertical.

[0046] The finished product produced by the core composite molding equipment includes an upper layer 101 (dust-free paper), a middle layer 100 (fluffy cotton), a lower layer 102 (dust-free paper or non-woven fabric), and a wrapping layer 103 (non-woven fabric). Taking the lower layer 102 as a dust-free paper as an example, the dust-free paper is transported by the upper layer conveying mechanism 3, the fluffy cotton is transported by the middle layer conveying mechanism 1, the other layer of dust-free paper is transported by the lower layer conveying mechanism 5, and the non-woven fabric is transported by the wrapping layer conveying mechanism 7.

[0047] Reference Figure 1The fluffy cotton is transported through the intermediate layer transmission mechanism 11, corrected by the intermediate layer correction mechanism 12, and enters the first negative pressure mold roller 2. The polymer chamber 21 on the first negative pressure mold roller 2 opens and sends out polymer, which enters the fluffy cotton through the negative pressure principle. The upper layer transmission mechanism 33 transports the dust-free paper, which is corrected by the upper layer correction mechanism 34. Then, the upper layer glue spraying mechanism 31 sprays glue on the dust-free paper. The glued dust-free paper adheres to the intermediate layer 100 and is rolled and laminated by the upper layer composite roller 32 to form a two-layer structure. The two-layer structure is flipped by the first negative pressure mold roller 2 and enters the second negative pressure mold roller 4, where polymer is fed into the other side of the fluffy cotton. The nonwoven fabric is fed vertically downwards into the equipment, entering at a 90-degree angle. It then travels to the right, passing through the lower transmission mechanism 53, the lower correction mechanism 54, and the lower glue spraying mechanism 51, which sprays glue onto the surface of the cleanroom paper. It is then guided to the second negative pressure roller 4, where the lower composite roller 52 adheres the cleanroom paper to the surface of the intermediate layer 100. The nonwoven fabric is then transported through the wrapping layer transmission mechanism 72, corrected by the wrapping layer correction mechanism 73, and then sprayed with glue by the wrapping glue spraying mechanism. This process combines the nonwoven fabric with the aforementioned core structure to form the finished core structure. The finished core structure at this point is described in reference to... Figure 3 .

[0048] The core structure in this embodiment differs from that in Embodiment 1 in that: the core structure in this embodiment has 5 layers, while the core structure in Embodiment 1 has 4 layers. The lower layer 102 in the core structure of Embodiment 1 is equivalent to the wrapping layer 103 in the core structure of this embodiment. Therefore, the lower layer 102 in Embodiment 1 is selected as non-woven fabric instead of dust-free paper. The core structure in Embodiment 2 has an additional lower layer 102 (dust-free paper or non-woven fabric).

[0049] In this embodiment, the core composite molding equipment produces a finished product consisting of an upper layer 101 (dust-free paper), a middle layer 100 (fluffy cotton), a lower layer 102 (dust-free paper or non-woven fabric), and a wrapping layer 103 (non-woven fabric). Since the wrapping mechanism 6 wraps the edges to the edge of the upper layer 101, the core structure has 5 layers. However, before the wrapping mechanism 6 wraps the edges, considering only the layer stacking, it has 4 layers.

[0050] In Examples 1 and 2, the lower layer 102 feeds in a vertical direction, which helps to reduce the overall horizontal space occupied by the equipment and reduce the floor area of ​​the equipment.

[0051] Example 3

[0052] like Figure 1 , Figure 3As shown, this embodiment provides a core composite molding device. The structural difference between the core composite molding device in this embodiment and the core composite molding device in Embodiment 1 is that the feeding direction of the lower layer 102 in this embodiment is changed to enter horizontally. Taking the lower layer 102 as a dust-free paper as an example, after it enters horizontally, it is corrected by the lower layer correction mechanism 54. The subsequent actions are the same as in Embodiment 2: the lower layer spraying mechanism 51 sprays glue on the surface of the dust-free paper and guides it to the second negative pressure mold wheel 4. The lower layer composite roller 52 adheres the dust-free paper to the surface of the middle layer 100. The non-woven fabric is transmitted through the wrapping layer transmission mechanism 72 and corrected by the wrapping layer correction mechanism 73. Then, the non-woven fabric is sprayed with glue on its surface by the wrapping spraying mechanism, and the non-woven fabric and the aforementioned core structure are composite wrapped to form the core finished structure. The core finished structure at this time is also referred to Figure 3 .

[0053] Example 4

[0054] like Figure 1-4 As shown, this embodiment provides a core composite molding device. The core composite molding device in this embodiment includes all the structures in Embodiment 1, Embodiment 2, and Embodiment 3, so that the core composite molding device in this embodiment can prepare the core structures described in Embodiment 1, Embodiment 2, and Embodiment 3.

[0055] Both the first negative pressure mold wheel 2 and the second negative pressure mold wheel 4 are controlled by servo motors to rotate. Phase control is performed between the first negative pressure mold wheel 2 and the second negative pressure mold wheel 4. During high-speed operation (200-350 meters / minute), the quality of the prepared core is improved, the core cost is reduced, and the customer's requirements for core customization are met.

[0056] The above description is only a preferred embodiment of the present utility model, and therefore cannot be used to limit the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the present utility model patent and the contents of the specification should still fall within the scope of the present utility model.

Claims

1. A core composite molding equipment, characterized in that, The system includes an intermediate layer conveying mechanism for transferring an intermediate layer, a first negative pressure mold wheel for spreading a first layer of polymer, an upper layer conveying mechanism for transferring an upper layer, a second negative pressure mold wheel for spreading a second layer of polymer, and a lower layer conveying mechanism for transferring a lower layer. Both the first and second negative pressure mold wheels are equipped with polymer storage chambers. The intermediate layer conveying mechanism guides the intermediate layer to the first negative pressure mold wheel, where polymer is released from the polymer storage chamber and drawn into the intermediate layer via the first negative pressure mold wheel. The upper layer conveying mechanism guides the upper layer to the surface of the intermediate layer. During the transfer of the upper layer, an upper layer adhesive spraying mechanism sprays adhesive onto its surface, and an upper layer composite roller adheres the upper layer to the surface of the intermediate layer. The first negative pressure mold wheel rotates to flip the intermediate layer and cooperates with the second negative pressure mold wheel to continue transferring the intermediate layer. The second negative pressure mold wheel draws polymer into the intermediate layer. The lower layer conveying mechanism guides the lower layer to the surface of the intermediate layer. During the transfer of the lower layer, a lower layer adhesive spraying mechanism sprays adhesive onto its surface, and a lower layer composite roller adheres the lower layer to the surface of the intermediate layer.

2. The core composite molding equipment according to claim 1, characterized in that, The intermediate layer conveying mechanism includes an intermediate layer transmission mechanism and an intermediate layer correction mechanism, with the intermediate layer correction mechanism located at the rear end of the intermediate layer transmission mechanism.

3. The core composite molding equipment according to claim 1, characterized in that, The upper conveying mechanism includes an upper transmission mechanism and an upper correction mechanism, with the upper correction mechanism located at the rear end of the upper transmission mechanism.

4. The core composite molding equipment according to claim 1, characterized in that, The lower-level conveying mechanism includes a lower-level transmission mechanism and a lower-level correction mechanism, with the lower-level correction mechanism located at the rear end of the lower-level transmission mechanism.

5. The core composite molding equipment according to claim 1, characterized in that, The core composite molding equipment also includes a wrapping mechanism, which is located at the rear end of the second negative pressure mold wheel.

6. The core composite molding equipment according to claim 5, characterized in that, The core composite molding equipment also includes a wrapping layer conveying mechanism for transporting the wrapping layer. The wrapping layer conveying mechanism guides the wrapping layer to the wrapping mechanism. During the transfer of the wrapping layer, adhesive is sprayed onto its surface by a wrapping layer adhesive spraying mechanism, and the wrapping mechanism then wraps and shapes it.

7. The core composite molding equipment according to claim 6, characterized in that, The coating layer conveying mechanism includes a coating layer transmission mechanism and a coating layer correction mechanism, with the coating layer correction mechanism located at the rear end of the coating layer transmission mechanism.

8. The core composite molding equipment according to claim 1, characterized in that, The feeding direction of the intermediate layer conveying mechanism, the upper layer conveying mechanism, and the lower layer conveying mechanism is either vertical or horizontal.

9. The core composite molding equipment according to claim 1, characterized in that, Phase control between the first negative pressure mold wheel and the second negative pressure mold wheel.

10. The core composite molding equipment according to claim 1, characterized in that, The core composite molding equipment also includes a dust removal wheel and a dust collection trough. The dust collection trough is installed at the bottom or bottom side of the first negative pressure molding wheel and the second negative pressure molding wheel, and the dust removal wheel is installed at the side of the first negative pressure molding wheel.