Pressing assembly and film spraying device for producing paper-plastic composite material

Abstract

The utility model discloses a laminating assembly for producing a paper-plastic composite material, which comprises a double-roller assembly, the double-roller assembly comprises a first compression roller and a second compression roller, the second compression roller is a cooling roller and comprises a heat dissipation inner cylinder and a heat absorption outer sleeve, the heat dissipation inner cylinder and the heat absorption outer sleeve are enclosed to form a liquid cooling cavity, and the circumferential inner wall of the heat dissipation inner cylinder is provided with heat dissipation fins; and the circulation assembly comprises a liquid cooling box, an infusion pump and a return pipe. The utility model further discloses a film spraying device for producing the paper-plastic composite material. According to the pressing assembly and the film spraying device for producing the paper-plastic composite material, heat of a paper-plastic composite film is absorbed through cooling liquid in the liquid cooling cavity of the second pressing roller, the absorbed heat is transmitted to the outside through the cooling fins, the temperature rising speed of the cooling liquid is delayed, circulating flowing of the cooling liquid is achieved through the circulating assembly, the using amount of the cooling liquid is reduced, and the production efficiency is improved. And energy conservation is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of laminating paper-plastic composite materials, in particular to a pressing component and a laminating device for producing paper-plastic composite materials. Background Art

[0002] Paper-plastic composite material is a composite material that is laminated and connected with a paper layer and a plastic film layer through an adhesive layer. The paper layer is preferably made of high-strength, environmentally friendly paper to ensure the basic performance of the product. The plastic film layer material includes biaxially oriented polypropylene (BOPP), etc. These materials have good mechanical properties and thermal stability and are suitable for lamination with paper. In the production process, Mr. Huang usually uses a die head to output the adhesive layer downward, and the paper, adhesive layer and plastic film are pressed together by a composite roller to form a variety of high-performance, waterproof, oil-proof and strong composite packaging materials.

[0003] After the lamination process, in order to prevent the formed paper-plastic composite film from being easily stuck together in the high temperature state during the winding process, which eventually leads to the scrapping of the product, one of the pressing rollers in the composite roller pair is usually designed as a cooling roller or a temperature reduction roller, so as to avoid the product from sticking together and being scrapped by absorbing heat and cooling the formed product; however, the existing cooling rollers or temperature reduction rollers have a single cooling method for the product, and usually use a cooling liquid to continuously pass into the cooling roller or the cooling roller to continuously absorb heat and cool it. This method leads to excessive use of cooling liquid and increased energy consumption of the device, which is not conducive to energy saving.

[0004] Therefore, it is necessary to improve the pressing components and laminating devices used to produce paper-plastic composite materials in the prior art. Utility Model Content

[0005] The utility model aims to overcome the defects in the prior art and provide a pressing assembly and laminating device for producing paper-plastic composite materials, which can reduce the amount of coolant used and help reduce energy consumption while ensuring cooling.

[0006] In order to solve the above technical problems, the utility model provides a laminating assembly for producing a paper-plastic composite material, including a pair of roller assemblies, the pair of roller assemblies including a first pressing roller and a second pressing roller whose axes are parallel and both rotate around their own axes, the first pressing roller and the second pressing roller are gap-matched to sequentially stack and connect paper, an adhesive layer and a plastic film to form a paper-plastic composite film, the second pressing roller is a cooling roller, and the second pressing roller includes:

[0007] A heat dissipation inner cylinder and a heat absorption outer cylinder, wherein the axis of the heat dissipation inner cylinder is arranged inside the heat absorption outer cylinder and is enclosed with the heat absorption outer cylinder to form a liquid cooling cavity, and a heat dissipation fin is arranged on the circumferential inner wall of the heat dissipation inner cylinder;

[0008] The roller assembly further comprises:

[0009] A circulation component, the circulation component includes a liquid cooling box, an infusion pump and a reflux pipe, the inner cavity of the liquid cooling box is connected to one end of the liquid cooling cavity through the infusion pump, and the other end of the liquid cooling cavity is connected to the inner cavity of the liquid cooling box through the reflux pipe.

[0010] Preferably, in order to enhance the heat dissipation effect, the heat sink extends in a direction parallel to the axial direction of the heat dissipation inner cylinder.

[0011] Preferably, in order to increase the heat dissipation area and achieve uniform heat dissipation, the heat dissipation fins are distributed in an annular array on the circumferential inner wall of the heat dissipation inner cylinder.

[0012] Preferably, in order to promote air circulation, the flowing air is used to take away the air heat inside the heat dissipation inner cylinder to further slow down the heating rate of the coolant. Fan blades are provided at at least one end of the second pressure roller, and the pair of rollers assembly also includes a driving assembly, which drives the fan blades to rotate around the axis of the second pressure roller.

[0013] Preferably, in order to further slow down the heating rate of the coolant, fan blades are provided at both ends of the second pressure roller, and the driving assembly drives the fan blades at both ends of the second pressure roller to rotate synchronously to promote external air to pass through the inner side of the heat dissipation inner cylinder.

[0014] Preferably, in order to drive the fan blades at both ends to be selected synchronously, the driving assembly includes a driving unit and two transmission units, the driving unit includes a driving motor and a driving shaft connected to the output end of the driving motor, and the driving shaft is respectively connected to the fan blades at both ends of the second pressure roller through the two transmission units.

[0015] Preferably, in order to drive the rotation of the fan blades by rotating the driving shaft, the transmission unit includes a driving wheel, a driven wheel and a synchronous belt, the driving wheel and the driven wheel are fixedly connected to the driving shaft and the fan blades respectively, and the driving wheel is connected to the driven wheel through the synchronous belt.

[0016] Preferably, in order to guide the concentrated flow of air through the inner side of the heat dissipation inner cylinder, both ends of the heat absorption outer sleeve are also provided with guide sleeves coaxially, and the fan blades are located on the inner side of the guide sleeves.

[0017] Preferably, in order to increase the contact area between the paper-plastic composite film and the second pressing roller, increase the heat transfer amount, and improve the cooling effect, a guide roller sleeve is provided coaxially with the core sleeve outside the drive shaft, and the guide roller sleeve is used to guide the transmission path of the paper-plastic composite film to increase the contact area between the transmission path and the heat-absorbing outer sleeve.

[0018] In order to solve the above technical problems, the utility model also provides a laminating device for producing paper-plastic composite materials, comprising:

[0019] frame;

[0020] A laminating assembly and two feeding assemblies, wherein the laminating assembly and the two feeding assemblies are both arranged on the frame, the laminating assembly is used to output the adhesive layer downward, and the two feeding assemblies are used to output paper and plastic film respectively;

[0021] A pressing device, which is arranged on the frame and includes the pressing assembly described in any one of the above technical solutions;

[0022] A winding assembly is arranged on the frame and is used for winding and collecting the paper-plastic composite film.

[0023] In summary, compared with the prior art, the laminating assembly and laminating device for producing paper-plastic composite materials of the utility model absorb the heat of the paper-plastic composite film through the coolant in the liquid cooling chamber of the second pressing roller, and transfer the absorbed heat to the outside through the heat sink, thereby slowing down the heating rate of the coolant, and utilizing the circulation assembly to realize the circulation flow of the coolant, thereby reducing the amount of coolant used and achieving energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the paper pressing assembly of the utility model installed on a frame;

[0025] Figure 2 It is a structural schematic diagram of the paper pressing assembly of the utility model;

[0026] Figure 3 yes Figure 2 Explosion diagram of

[0027] Figure 4 yes Figure 3 A magnified view of part A;

[0028] Figure 5 It is a schematic diagram of the cross-sectional structure of the first pressing roller of the utility model;

[0029] Figure 6 It is a schematic diagram of the connection structure of the second pressing roller of the pressing assembly of the utility model, the circulation assembly and the driving assembly;

[0030] Figure 7 yes Figure 6 Explosion diagram of

[0031] Figure 8 It is a structural schematic diagram of the second pressing roller of the utility model;

[0032] Fig. 9 yes Figure 8 Explosion diagram of

[0033] Fig.10 yes Figure 8 A schematic cross-sectional structure diagram of ;

[0034] Fig.11 It is a structural schematic diagram of the coating device of the utility model;

[0035] Fig.12 This is a structural schematic diagram of the coating device of the utility model from another perspective;

[0036] Fig.13 yes Fig.11 A front view of

[0037] Fig.14 yes Fig.11 Explosion diagram of

[0038] Fig.15 It is a structural schematic diagram of the tensioning unit in the laminating device of the utility model;

[0039] In the figure: 1, frame; 11, bottom plate; 12, support frame; 13, slide rail; 2, first pressure roller; 21, inner roller; 211, depression; 22, outer roller sleeve; 221, protrusion; 3, second pressure roller; 31, heat dissipation inner cylinder; 311, heat sink; 312, flange; 32, heat absorption outer sleeve; 321, guide sleeve; 33, liquid cooling chamber; 34, circulation component; 341, liquid cooling box; 342, infusion pump; 343, return pipe; 344, box cover; 3441, liquid injection port; 345, sealing plug; 35, fan blade; 351, sleeve; 36, pressure roller frame; 37, connecting piece; 371, main flow pipe; 372, shunt pipe; 38, concentric pipe; 4, extrusion component; 41, translation unit; 42, moving frame; 43, inner core strip; 44, central axis; 45. End frame; 46. Slider; 5. Laminating assembly; 51. Screw conveyor; 52. Die head; 6. Feeding assembly; 61. Unwinding rack; 62. Unwinding motor; 63. Unwinding roller; 64. Tensioning unit; 641. Fixed rack; 642. Movable rack; 643. Tensioning roller; 644. Compression spring; 645. Slide bar; 7. Winding assembly; 71. Winding rack; 72. Winding motor; 73. Winding roller; 8. Paper-plastic composite film; 81. Paper; 82. Adhesive layer; 83. Plastic film; 9. Driving assembly; 91. Driving unit; 911. Driving motor; 912. Driving shaft; 913. Guide roller sleeve; 914. First support sleeve; 915. Second support sleeve; 92. Transmission unit; 921. Driving wheel; 922. Driven wheel; 923. Synchronous belt. DETAILED DESCRIPTION

[0040] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0041] like Figure 1-Figure 10 As shown, the laminating assembly of the paper-plastic composite material of the utility model comprises a pair of roller assemblies, the pair of roller assemblies comprises a first pressing roller 2 and a second pressing roller 3 whose axes are parallel and both rotate around their own axes, the first pressing roller 2 and the second pressing roller 3 are gap-matched to sequentially stack and connect the paper 81, the adhesive layer 82 and the plastic film 83 to form a paper-plastic composite film 8, the first pressing roller 2 comprises:

[0042] The inner roller 21 and the outer roller sleeve 22, the outer roller sleeve 22 is fixedly sleeved outside the inner roller 21 coaxially, and the inner roller 21 and the outer roller sleeve 22 are respectively a rigid roller and an elastic roller sleeve;

[0043] The roller assembly also includes:

[0044] The extrusion assembly 4 includes a translation unit 41, a movable frame 42 connected to the output end of the translation unit 41, and an inner core strip 43 extending along the axial direction of the inner roller 21 and arranged on the movable frame 42. The inner core strip 43 is distributed on the inner side of the inner roller 21 at intervals along the circumference of the inner roller 21 with the axis of the inner roller 21 as the center line. The inner core strip 43 is in contact with the inner wall of the inner roller 21. The axis line of the second pressing roller 3, the axis line of one of the inner core strips 43 and the axis line of the inner roller 21 are distributed in the same plane in sequence.

[0045] The laminating assembly of the utility model is mainly installed on the frame 1. When in use, the two feeding assemblies 6 output the paper 81 and the plastic film 83 respectively, and the laminating assembly 5 outputs the adhesive layer 82 downward. The moving path of the adhesive layer 82 is laminated between the moving path of the paper 81 and the moving path of the plastic film 83, and the laminating point of the three is located at the gap between the first pressing roller 2 and the second pressing roller 3, so that the first pressing roller 2 and the second pressing roller 3 can exert a laminating force in time, and after the paper 81, the adhesive layer 82 and the plastic film 83 are stacked and connected in sequence to form a paper-plastic composite film 8, the paper-plastic composite film 8 is wound and collected by the winding assembly 7.

[0046] Different from the prior art, in the utility model, the first pressure roller 2 adopts a hollow structure, which facilitates the extrusion component 4 to apply pressure from the inside of the first pressure roller 2, so that the pressure application position can be close to the gap between the first pressure roller 2 and the second pressure roller 3. On the one hand, it can reduce the power consumption required for the extrusion component 4 to apply pressure and achieve energy saving. On the other hand, it makes the device structure more compact, reduces the occupied space, and facilitates workshop workers to carry out other production activities.

[0047] Specifically, in the present invention, the axis centers of the first pressing roller 2 and the second pressing roller 3 are both horizontally arranged, and the axis centers of the two are located in the same horizontal plane, and the first pressing roller 2 and the second pressing roller 3 rotate on the frame 1 around their respective axis centers, such as Figure 1 shown.

[0048] The specific structure of the first pressing roller 2 is as follows Figure 3-Figure 5 As shown, the first pressing roller 2 includes an inner roller 21 and an outer roller sleeve 22 which are fixedly connected coaxially. The inner roller 21 is a rigid roller, and the outer roller sleeve 22 is an elastic roller sleeve. The material is preferably rubber. During extrusion, the outer roller sleeve 22 can cooperate with the second pressing roller 3 through its own elastic deformation to apply pressure on the paper 81 and the plastic film 83 from both sides, ensuring that the two sides of the adhesive layer 82 are fixedly connected to the paper 81 and the plastic film 83, respectively, thereby improving the product quality of the formed paper-plastic composite film 8.

[0049] In order to ensure the firm connection between the inner roller 21 and the outer roller sleeve 22, matching protrusions 221 and recesses 211 are provided between the inner roller 21 and the outer roller sleeve 22. The matching protrusions 221 and recesses 211 increase the contact area between the inner roller 21 and the outer roller sleeve 22, thereby strengthening the connection strength between the inner roller 21 and the outer roller sleeve 22. Specifically, the protrusions 221 are provided on the circumferential inner wall of the outer roller sleeve 22, and the recesses 211 are provided on the circumferential outer edge of the inner roller 21.

[0050] In order to facilitate the assembly and connection between the inner roller 21 and the outer roller sleeve 22, the protrusion 221 and the depression 211 are both strip-shaped and extend in parallel with the axial direction of the inner roller 21. More specifically, the protrusion 221 is a convex strip, and its two ends are flush with the two ends of the outer roller sleeve 22, and the depression 211 is a through groove. After adopting the above structure, it is convenient to fix the outer roller sleeve 22 on the outside of the inner roller 21 to achieve a relatively fixed connection between the two, and the contact area between the inner roller 21 and the outer roller sleeve 22 is increased, and the contact area between the inner roller 21 and the outer roller sleeve 22 is further strengthened. In addition, there are multiple protrusions 221 and depressions 211, and the annular array is distributed between the inner roller 21 and the outer roller sleeve 22. After adopting the above design, the contact area is further increased, the connection strength of the inner roller 21 and the outer roller sleeve 22 is guaranteed, and the relative fixed connection between the two is achieved, so that the two can rotate synchronously.

[0051] A further improvement is that the second pressing roller 3 is a cooling roller. With this design, the second pressing roller 3 is in contact with the formed paper-plastic composite film 8, so that the paper-plastic composite film 8 can be cooled in time, thereby preventing the high-temperature paper-plastic composite film 8 from sticking together during winding and collection, which eventually causes the product to be scrapped.

[0052] The extrusion assembly 4 of the utility model has a specific structure as follows Figure 2-Figure 4As shown, in the extrusion assembly 4, the translation unit 41 is arranged on the side of the first pressure roller 2 away from the second pressure roller 3. The translation unit 41 uses a hydraulic cylinder, and its cylinder barrel is fixed on the frame 1. The piston rod extends in a horizontal direction parallel to the axial centerline of the first pressure roller 2 and the second pressure roller 3 and is fixedly connected to the U-shaped moving frame 42. Slide blocks 46 are fixedly connected to both ends of the moving frame 42. The slide blocks 46 slide on the top of the frame 1. The two ends of the moving frame 42 are fixedly connected through a central axis 44. The central axis 44 is coaxially arranged on the inner side of the inner roller 21. Two end frames 45 distributed side by side are fixed on the central axis 44. The two end frames 45 are respectively fitted with the two end surfaces of the outer roller sleeve 22 to limit the axial position of the outer roller sleeve 22 and the inner roller 21 to prevent the outer roller sleeve 22 and the inner roller 21 from axial displacement.

[0053] Three inner core strips 43 are arranged between the two end frames 45. The three inner core strips 43 are arranged in a circular array on the inner side of the inner roller 21 along the axis of the central axis 44. The inner core strips 43 abut against the circumferential inner wall of the inner roller 21. Among the three inner core strips 43, the axis of one of the inner core strips 43 is always located at the same horizontal plane as the axis of the first pressing roller 2 and the axis of the second pressing roller 3.

[0054] After adopting the above structure, the three inner core strips 43 distributed in a circular array are all in contact with the circumferential inner wall of the inner roller 21, so that the three inner core strips 43 can determine the radial position of the inner roller 21. On the basis of satisfying the determination of the radial position of the inner roller 21, the number of inner core strips 43 is reduced, thereby reducing the cost of the equipment; the inner core strip 43 adopts an inner core roller that rotates around its own axis, so as to reduce the friction between the inner core roller and the inner roller 21, and facilitate the first pressure roller 2 to rotate around its own axis; the three inner core strips 43 are distributed in a circular array to ensure that the circumferential force on the inner wall of the inner roller 21 is uniform.

[0055] Moreover, among the three inner core strips 43, since the axis line of one of the inner core strips 43 is always located in the same horizontal plane as the axis line of the first pressure roller 2 and the axis line of the second pressure roller 3, after the translation unit 41 drives the moving frame 42 to move close to the second pressure roller 3, during the lamination production, the pressure position of the inner core strip 43 on the inner roller 21 is close to the pressure position of the outer roller sleeve 22 and the second pressure roller 3 on the paper-plastic composite film 8, ensuring that the paper-plastic composite film 8 can be subjected to sufficient lamination force at the gap between the first pressure roller 2 and the second pressure roller 3, so that the paper 81, the adhesive layer 82 and the plastic film 83 are firmly stacked and connected in sequence, and the power consumption required by the extrusion component 4 is reduced, thereby achieving energy saving.

[0056] Moreover, the moving direction of the piston rod and the movable frame 42 is parallel to the distribution direction of the axis center line of the first pressing roller 2 and the axis center line of the second pressing roller 3, so that when the movable frame 42 approaches the second pressing roller 3, the extrusion force applied by the inner core strip 43 can completely act on the inner roller 21 in a direction perpendicular to the thickness of the paper-plastic composite film 8 at the lamination point, thereby avoiding the loss of extrusion force, thereby reducing the power consumption of driving the first pressing roller 2 close to the second pressing roller 3 for extrusion, thereby achieving energy saving.

[0057] A further improvement is that the second pressing roller 3 includes a heat dissipation inner cylinder 31 and a heat absorption outer shell 32, the axis line of the heat dissipation inner cylinder 31 is arranged on the inner side of the heat absorption outer shell 32 and is enclosed with the heat absorption outer shell 32 to form a liquid cooling chamber 33, and a heat sink 311 is arranged on the circumferential inner wall of the heat dissipation inner cylinder 31; the roller assembly also includes: a circulation assembly 34, the circulation assembly 34 includes a liquid cooling box 341, an infusion pump 342 and a reflux pipe 343, the inner cavity of the liquid cooling box 341 is connected to one end of the liquid cooling chamber 33 through the infusion pump 342, and the other end of the liquid cooling chamber 33 is connected to the inner cavity of the liquid cooling box 341 through the reflux pipe 343.

[0058] Specifically, Figure 6-Figure 10 As shown, the second pressure roller 3 as a cooling roller comprises a heat dissipation inner cylinder 31 and a heat absorption outer shell 32 which are fixedly connected with the coaxial center line, wherein the circumferential outer edges of both ends of the heat dissipation inner cylinder 31 are fixed with annular flanges 312, and the circumferential outer edges of the flanges 312 are fixedly connected with the circumferential inner wall of the heat dissipation inner cylinder 31, so that the heat dissipation inner cylinder 31 and the heat absorption outer shell 32 are enclosed to form a liquid cooling chamber 33, which cooperates with the circulation component 34. Specifically, during the laminating production process, the liquid cooling box is drawn by the infusion pump 342. The cooling liquid (usually water) temporarily stored in 341 is transported to the liquid cooling chamber 33. During the flow of the cooling liquid in the liquid cooling chamber 33, the cooling liquid absorbs the heat of the paper-plastic composite film 8 product through the heat-absorbing jacket 32, cools it down, and then flows back to the liquid cooling box 341 through the reflux pipe 343, so that the cooling liquid circulates and absorbs heat from the paper-plastic composite film 8 being transported and moved, thereby reducing the heat of the paper-plastic composite film 8 and preventing it from sticking together after being wound and collected in a high-temperature state, which would result in the scrapping of the product.

[0059] When the coolant flows in the liquid cooling chamber 33, the absorbed heat is transferred to the heat sink 311 through the heat dissipation inner tube 31, so that the heat sink 311 can diffuse the heat absorbed by the coolant to the outside to slow down the temperature rise rate of the coolant, ensure the cooling effect of the circulating coolant, reduce the use of the coolant, and further achieve energy saving.

[0060] In order to achieve the connection between the two ends of the liquid cooling chamber 33 and the inner cavity of the liquid cooling box 341, connecting pieces 37 are provided at both ends of the heat dissipation inner cylinder 31. The connecting piece 37 includes a main flow pipe 371 and a branch pipe 372 that are connected. The main flow pipe 371 is coaxial with the second pressing roller 3. One end of the main flow pipe 371 is located on the inner side of the heat dissipation inner cylinder 31 and is connected with four branch pipes 372 distributed in an annular array. The axial direction of the branch pipe 372 is perpendicular to the axial direction of the main flow pipe 371. The side walls at both ends of the heat dissipation inner cylinder 31 are provided with four connecting holes in an annular array. The four connecting holes are connected to the main flow pipe 371 and the main flow pipe 371 is connected to the main flow pipe 371. The through holes correspond to the four shunt pipes 372 one by one and are fixedly connected; among the connecting pieces 37 at both ends of the heat dissipation inner cylinder 31, the circumferential inner wall of the mainstream pipe 371 of one of the connecting pieces 37 is sealedly connected to the circumferential outer edge of the output end pipe of the infusion pump 342, and the circumferential inner wall of the mainstream pipe 371 of the other connecting piece 37 is sealedly connected to the circumferential outer edge of the return pipe 343. In this way, through the connecting pieces 37 at both ends of the heat dissipation inner cylinder 31, the two ends of the liquid cooling cavity 33 are connected to the inner cavity of the liquid cooling box 341 through the infusion pump 342 and the return pipe 343 respectively.

[0061] A pressure roller frame 36 is also provided outside the main flow pipe 371, and the pressure roller frame 36 is fixed on the frame 1. The main flow pipe 371 is supported by the pressure roller frame 36 to support the connecting piece 37, and the branch pipe 372 of the connecting piece 37 is fixedly connected to the heat dissipation inner cylinder 31, thereby realizing the function of supporting the second pressure roller 3 through the pressure roller frame 36 to facilitate the rotation of the second pressure roller 3 around its own axis.

[0062] The top of the liquid cooling box 341 is open and is covered with a box cover 344 to reduce the volatilization of the coolant. The box cover 344 is provided with a liquid injection port 3441, and the liquid injection port 3441 is threadedly connected with a sealing plug 345, so that the sealing plug 345 and the box cover 344 are detachably connected, and it is convenient to inject additional coolant into the liquid cooling box 341.

[0063] A further improvement is that the heat sink 311 extends in parallel with the axial direction of the heat sink inner cylinder 31 ; the heat sink 311 is distributed in an annular array on the circumferential inner wall of the heat sink inner cylinder 31 .

[0064] Specifically, the two ends of the heat sink 311 are close to the two connecting pieces 37, and the adjacent heat sinks 311 are close to each other. In this way, the number of heat sinks 311 is increased, and the heat dissipation area is increased to slow down the temperature rise rate of the coolant in the liquid cooling chamber 33, and ensure the cooling effect on the paper-plastic composite film 8.

[0065] A further improvement is that a fan blade 35 is provided at least at one end of the second pressure roller 3 , and the roller assembly further includes a driving assembly 9 , which drives the fan blade 35 to rotate around the axis of the second pressure roller 3 .

[0066] Specifically, the sealing sleeve on the main flow pipe 371 is provided with a sleeve 351, and the fan blades 35 are distributed in an annular array on the outside of the sleeve 351. After adopting the above structure, the sleeve 351 and the fan blades 35 are driven by the driving component 9 to rotate around the axis of the second pressure roller 3, generating airflow, guiding the external air to pass through the inner side of the heat dissipation inner cylinder 31, so that the air can take away the heat of the heat sink 311, further delaying the temperature rise rate of the coolant in the liquid cooling chamber 33, thereby ensuring the cooling effect on the paper-plastic composite film 8.

[0067] A further improvement is that both ends of the second pressure roller 3 are provided with fan blades 35 , and the driving assembly 9 drives the fan blades 35 at both ends of the second pressure roller 3 to rotate synchronously to promote external air to pass through the inner side of the heat dissipation inner cylinder 31 .

[0068] By arranging fan blades 35 at both ends of the second pressure roller 3, after the driving component 9 is running, the fan blades 35 at both ends rotate synchronously, and the fan blades 35 at one end introduce external air into the inner side of the heat dissipation inner cylinder 31 to facilitate the absorption of heat from the heat dissipation fins 311, and the fan blades 35 at the other end output the hot air in the heat dissipation inner cylinder 31 that has absorbed the heat from the heat dissipation fins 311 to the outside, thereby promoting the external air to pass through the inner side of the heat dissipation inner cylinder 31, accelerating the circulation of air, and further enhancing the heat dissipation effect.

[0069] A further improvement is that guide sleeves 321 are provided coaxially at both ends of the heat absorbing outer sleeve 32 , and the fan blades 35 are located on the inner side of the guide sleeves 321 .

[0070] By setting the guide sleeve 321, it is convenient to guide the direction and range of air flow, so that before absorbing heat, the external air can be concentrated and passed into the inner side of the heat dissipation inner cylinder 31. After absorbing heat, the air that absorbs heat is led out to the outside, thereby improving the heat transfer efficiency, delaying the temperature rise rate of the cooling liquid, and ensuring the cooling effect on the paper-plastic composite film 8.

[0071] A further improvement is that the drive assembly 9 includes a drive unit 91 and two transmission units 92, the drive unit 91 includes a drive motor 911 and a drive shaft 912 connected to the output end of the drive motor 911, the drive shaft 912 is respectively connected to the fan blades 35 at both ends of the second pressure roller 3 through the two transmission units 92; the transmission unit 92 includes a driving wheel 921, a driven wheel 922 and a synchronous belt 923, the driving wheel 921 and the driven wheel 922 are respectively fixedly connected to the drive shaft 912 and the fan blades 35, and the driving wheel 921 is connected to the driven wheel 922 through the synchronous belt 923.

[0072] The driving shaft 912 is provided with a first support sleeve 914, which is fixed on the frame 1; two first support sleeves 914 are provided, which are distributed at both ends of the driving shaft 912; the driven wheel 922 is fixedly connected with the sleeve 351 coaxially through the concentric tube 38 sleeved outside the main pipe 371. After adopting the above structure, the driving motor 911 drives the driving shaft 912 to rotate around its own axis under the support of the first support sleeve 914, thereby driving the driving wheels 921 at both ends to rotate, and the driving wheel 921 acts on the driven wheel 922 through the synchronous belt 923, so that the driven wheel 922 rotates, and the driven wheel 922 is fixedly connected with the sleeve 351 coaxially through the concentric tube 38, so that the sleeve 351 drives the fan blade 35 to rotate around the axis of the second pressure roller 3, generating airflow, driving air through the inner side of the heat dissipation inner cylinder 31, and realizing heat dissipation.

[0073] A further improvement is that a guide roller sleeve 913 is coaxially sleeved outside the driving shaft 912 , and the guide roller sleeve 913 is used to guide the transmission path of the paper-plastic composite film 8 to increase the contact area between the transmission path and the heat-absorbing outer sleeve 32 .

[0074] Specifically, the circumferential inner wall of the guide roller sleeve 913 and the circumferential outer edge of the drive shaft 912 enclose an annular gap, and the second support sleeves 915 are respectively sleeved on the two ends of the guide roller sleeve 913, and the second support sleeve 915 is fixed on the frame 1. The circumferential inner wall of the guide roller sleeve 913 and the circumferential outer edge of the drive shaft 912 enclose an annular gap to prevent the rotation of the drive shaft 912 from causing the rotation of the guide roller sleeve 913, so that the rotation of the two does not interfere with each other, and the second support sleeve 915 is used to conveniently support the guide roller sleeve 913 to rotate stably around its own axis. The second support sleeve 915 can guide the output path of the paper-plastic composite film 8, increase the contact area with the heat-absorbing outer sleeve 32, and further improve the cooling effect on the paper-plastic composite film 8.

[0075] like Figure 11-Figure 15 As shown, the utility model also discloses a laminating device for producing paper-plastic composite materials, comprising:

[0076] Rack 1;

[0077] The laminating assembly 5 and the two feeding assemblies 6 are both arranged on the frame 1. The laminating assembly 5 is used to output the adhesive layer 82 downwards, and the two feeding assemblies 6 are used to output the paper 81 and the plastic film 83 respectively.

[0078] A pressing device, which is arranged on the frame 1 and includes the above-mentioned pressing assembly;

[0079] The winding assembly 7 is arranged on the frame 1 and is used for winding and collecting the paper-plastic composite film 8 .

[0080] In the device, a laminating assembly 5, two feeding assemblies 6, a laminating device and a winding assembly 7 are supported by a frame 1. The two feeding assemblies 6 output paper 81 and plastic film 83 respectively. At the same time, the laminating assembly 5 outputs an adhesive layer 82 downward. At the gap between the first pressing roller 2 and the second pressing roller 3, the paper 81, the adhesive layer 82 and the plastic film 83 are firmly bonded in sequence through the action of the squeezing assembly 4, thereby ensuring the product quality of the formed paper-plastic composite film 8.

[0081] Because in the extrusion assembly 4, when the translation unit 41 drives the movable frame 42 to move, the inner core strip 43 on the movable frame 42 is located on the inner side of the inner roller 21 in the first pressure roller 2, and the axis line of one of the inner core strips 43 is in the same horizontal plane as the axis line of the first pressure roller 2 and the axis line of the second pressure roller 3. The inner core strip 43 applies pressure to the inner wall of the inner roller 21, so that the pressure position is close to the pressure position of the first pressure roller 2 and the second pressure roller 3. This not only reduces the size of the equipment and makes the device structure more compact, but also eliminates the need to apply pressure from the outer surface of the first pressure roller 2, but applies pressure from a position close to the gap between the first pressure roller 2 and the second pressure roller 3, thereby reducing the energy consumption of the extrusion assembly 4 when applying pressure and achieving energy saving.

[0082] In addition, at the second pressing roller 3, after the cooling liquid in the liquid cooling chamber 33 absorbs the heat from the paper-plastic composite film 8, the heat is transferred to the inner side of the heat dissipation inner cylinder 31 by relying on the heat dissipation fins 311 of the heat dissipation inner cylinder 31, and the driving component 9 drives the fan blades 35 to rotate, promotes air flow, and accelerates the diffusion of heat to the outside through the heat dissipation inner cylinder 31, which greatly slows down the heating rate of the cooling liquid in the liquid cooling chamber 33, and the circulation component 34 promotes the circulation of the cooling liquid between the liquid cooling chamber 33 and the liquid cooling box 341, thereby reducing the consumption of the cooling liquid. While achieving energy saving, it improves the cooling effect on the paper-plastic composite film 8, and avoids the paper-plastic composite film 8 from sticking together due to high temperature when being wound and collected by the winding component 7, which eventually leads to product scrapping.

[0083] The frame 1 of the utility model includes a horizontal base plate 11, and a plurality of support frames 12 are fixed above the base plate 11, wherein some of the support frames 12 are used to support two feeding components 6, a coating component 5 and an extrusion component 4, and the remaining two support frames 12 are arranged opposite to each other along the width direction of the base plate 11, and the tops of the two support frames 12 are provided with slide rails 13 extending along the length direction of the base plate 11, and in the extrusion component 4, two sliders 46 below the two ends of the movable frame 42 are respectively slidably matched with the two slide rails 13.

[0084] The roller frame 36 of the second roller 3 is fixed above the bottom plate 11. In the extrusion assembly 4, the cylinder of the oil cylinder serving as the translation unit 41 is fixed above one of the support frames 12.

[0085] The laminating assembly 5 includes a screw conveyor 51 and a die 52. The screw conveyor 51 is fixed above one of the support frames 12, and its output end is connected to the input port of the die 52, so that the screw conveyor 51 can easily transport the material of the adhesive layer 82 into the die 52. The output port of the die 52 is a downward die port, which is used to output the adhesive layer 82 downward.

[0086] The feeding assembly 6 includes an unwinding frame 61, an unwinding motor 62 and an unwinding roller 63. The unwinding frame 61 is fixed above one of the support frames 12. The housing of the unwinding motor 62 is fixedly connected to the unwinding frame 61. The output shaft is fixedly connected to the unwinding roller 63 coaxially. The unwinding roller 63 rotates on the unwinding frame 61 around its own axis.

[0087] The feeding assembly 6 further includes a tensioning unit 64 disposed between the unwinding roller 63 and the die head 52 . The tensioning unit 64 is used to adjust the tensioning force when the material is output. The materials corresponding to the two tensioning units 64 are paper 81 and plastic film 83 , respectively. The tensioning unit 64 includes a fixed frame 641 horizontally fixed to one side of the unwinding frame 61, a movable frame 642 is arranged directly above the fixed frame 641, a tensioning roller 643 with a horizontal axis and rotating around its own axis on the movable frame 642 is arranged above the movable frame 642, a sliding rod 645 extending in the vertical direction is fixed below the movable frame 642, the sliding rod 645 is slidably penetrated on the fixed frame 641, so that the axis lines of the movable frame 642 and the tensioning roller 643 can move above the fixed frame 641 in the vertical direction, the movable frame 642 and the fixed frame 641 are connected by a compression spring 644, and the compression spring 644 provides an upward supporting force for the movable frame 642, so that the roller surface of the tensioning roller 643 is tangent to the transmission path of the paper 81 (or plastic film 83).

[0088] The unwinding motor 62 drives the unwinding roller 63 to rotate around its own axis on the unwinding frame 61 to realize the unwinding operation of the material. The elastic force of the compression spring 644 supports the movable frame 642, so that the movable frame 642 has a tendency to move upward away from the fixed frame 641, so that the tensioning roller 643 is tangent to the material transmission path, so that the material maintains a certain tension force, so as to realize the stable unwinding of the paper 81 and the plastic film 83.

[0089] The winding assembly 7 includes a winding frame 71 fixed on the bottom plate 11, and a winding motor 72 and a winding roller 73 rotating around its own axis are arranged on the winding frame 71. The housing of the winding motor 72 is fixed on the winding frame 71, and the output shaft is fixedly connected with the winding roller 73 coaxially. The winding motor 72 drives the winding roller 73 to rotate around its own axis, so that the produced paper-plastic composite film 8 can be wound and collected.

[0090] 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 technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A laminating assembly for producing a paper-plastic composite material, comprising a pair of roller assemblies, the pair of roller assemblies comprising a first pressing roller (2) and a second pressing roller (3) whose axes are parallel and both rotate around their own axes, the first pressing roller (2) and the second pressing roller (3) being clearance-matched to sequentially stack and connect paper (81), an adhesive layer (82) and a plastic film (83) to form a paper-plastic composite film (8), the second pressing roller (3) being a cooling roller, characterized in that: The second pressing roller (3) comprises: A heat dissipation inner cylinder (31) and a heat absorption outer cylinder (32), wherein the axis of the heat dissipation inner cylinder (31) is arranged on the inner side of the heat absorption outer cylinder (32) and is enclosed with the heat absorption outer cylinder (32) to form a liquid cooling cavity (33), and a heat dissipation fin (311) is arranged on the circumferential inner wall of the heat dissipation inner cylinder (31); The roller assembly further comprises: A circulation component (34), the circulation component (34) comprising a liquid cooling box (341), an infusion pump (342) and a reflux pipe (343), the inner cavity of the liquid cooling box (341) being connected to one end of the liquid cooling cavity (33) via the infusion pump (342), and the other end of the liquid cooling cavity (33) being connected to the inner cavity of the liquid cooling box (341) via the reflux pipe (343).

2. The pressing assembly for producing a paper-plastic composite material according to claim 1, characterized in that: The heat sink (311) extends in a direction parallel to the axial direction of the heat dissipation inner cylinder (31).

3. The pressing assembly for producing a paper-plastic composite material according to claim 2, characterized in that: The heat sink fins (311) are distributed in an annular array on the circumferential inner wall of the heat dissipation inner cylinder (31).

4. The pressing assembly for producing a paper-plastic composite material according to claim 1, characterized in that: At least one end of the second pressure roller (3) is provided with a fan blade (35), and the pair of rollers assembly further comprises a driving assembly (9), wherein the driving assembly (9) drives the fan blade (35) to rotate around the axis of the second pressure roller (3).

5. The pressing assembly for producing a paper-plastic composite material according to claim 4, characterized in that: Both ends of the second pressure roller (3) are provided with fan blades (35), and the driving assembly (9) drives the fan blades (35) at both ends of the second pressure roller (3) to rotate synchronously, so as to promote external air to pass through the inner side of the heat dissipation inner cylinder (31).

6. The pressing assembly for producing a paper-plastic composite material according to claim 5, characterized in that: The driving assembly (9) comprises a driving unit (91) and two transmission units (92); the driving unit (91) comprises a driving motor (911) and a driving shaft (912) connected to an output end of the driving motor (911); the driving shaft (912) is respectively connected to the fan blades (35) at both ends of the second pressure roller (3) through the two transmission units (92).

7. The pressing assembly for producing a paper-plastic composite material according to claim 6, characterized in that: The transmission unit (92) comprises a driving wheel (921), a driven wheel (922) and a synchronous belt (923); the driving wheel (921) and the driven wheel (922) are fixedly connected to the drive shaft (912) and the fan blade (35) respectively; the driving wheel (921) is transmission-connected to the driven wheel (922) via the synchronous belt (923).

8. The pressing assembly for producing a paper-plastic composite material according to claim 5, characterized in that: Both ends of the heat absorbing outer jacket (32) are provided with flow guide sleeves (321) coaxially with the center line, and the fan blades (35) are located on the inner side of the flow guide sleeves (321).

9. The pressing assembly for producing a paper-plastic composite material according to claim 6, characterized in that: A guide roller sleeve (913) is also provided coaxially with the core sleeve outside the driving shaft (912), and the guide roller sleeve (913) is used to guide the transmission path of the paper-plastic composite film (8) to increase the contact area between the transmission path and the heat-absorbing outer sleeve (32).

10. A laminating device for producing paper-plastic composite materials, characterized in that: include: Rack(1); A laminating assembly (5) and two feeding assemblies (6), wherein the laminating assembly (5) and the two feeding assemblies (6) are both arranged on the frame (1), the laminating assembly (5) is used to output the adhesive layer (82) downwards, and the two feeding assemblies (6) are used to output paper (81) and plastic film (83) respectively; A pressing device, the pressing device being arranged on the frame (1) and comprising a pressing assembly according to any one of claims 1 to 9; A winding assembly (7), wherein the winding assembly (7) is arranged on the frame (1), and the winding assembly (7) is used to wind and collect the paper-plastic composite film (8).

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