CN117817927B - Preheating device with heat exchange function after primary casting of film product processing - Google Patents

Abstract

The present invention relates to a film product processing one-time casting preheating device with heat exchange, belonging to the technical field of film product production. Adjacent casting rollers and composite rollers are installed on the main frame, a material passing gap is provided between the casting rollers and the composite rollers, a die head is provided above the material passing gap, a forced heat exchanger for cooling the casting roller is provided at the upper right part of the casting roller, an endothermic heat exchanger for cooling the casting roller is provided at the lower right part of the casting roller, a first air-cooled natural heat exchanger for cooling the composite roller is provided at the upper left part of the composite roller, and a second air-cooled natural heat exchanger is provided at the lower left part of the composite roller. The present invention has the following beneficial effects: the combined action of the fourth belt transfer and the composite roller improves the composite effect of the film, the casting roller is cooled by the endothermic heat exchanger, and the endothermic heat exchanger is used to preheat the coil to be processed, which can also improve the composite effect of the film and realize the recycling of heat.

Description

Preheating device for film products after one-time casting with heat exchange

Technical Field

The invention relates to a preheating device with heat exchange for film products after one-time casting, belonging to the technical field of film product production.

Background Art

Film lamination is to bond two or more layers of materials together with adhesives. This gives the original material new functions. Film and aluminum foil, film, paper, non-woven fabrics, etc. are often used. It can also be laminated with film, sponge, cloth, etc. Common flexible packaging materials are basically composite products, with different functions based on the excellent properties of different materials.

After searching, the patent number CN202210230019.X discloses a PVA non-woven fabric and PVA film composite device. It belongs to the technical field of film composite equipment. A water covering device is provided between the PVA film unwinding device and the thermal composite device. The PVA non-woven fabric unwinding device is located below the PVA film unwinding device; a first flattening roller is provided between the PVA film unwinding device and the water covering device; a thermal composite device, a cooling roller, and a winding device are sequentially provided on the side opposite to the PVA film unwinding device; a second flattening roller is provided between the PVA non-woven fabric unwinding device and the thermal composite device, and a cold air knife is provided between the thermal composite device and the cooling roller; the present invention combines water sealing and heat sealing technologies to composite a composite material with high peeling strength and uniform composite; water is one of the PVA solvents, which is cheap, environmentally friendly and non-toxic. When the film enters the composite roller, a water layer is evenly coated on the surface. Under the joint action of water and temperature, the film and the non-woven fabric can achieve an ideal composite strength at a lower temperature.

Although the above patent can realize the film composite function, the current technical considerations are not comprehensive and have the following disadvantages: there is a lack of an endothermic heat exchanger, and it is impossible to utilize the combined effect of the belt and the composite roller to improve the film composite effect. It is also impossible to utilize the endothermic heat exchanger to cool the cast roller and preheat the coil to be processed at the same time, and heat recovery cannot be achieved.

In order to solve one of the above problems, a film product preheating device with heat exchange after one-time casting is urgently needed.

Summary of the invention

In view of the above deficiencies in the prior art, the technical problem to be solved by the present invention is: how to realize the joint action of the fourth heat transfer belt and the composite roller to improve the composite effect of the film, and use the heat absorption heat exchanger to cool the casting roller. The heat absorption heat exchanger is used to preheat the coil to be processed, which can also improve the composite effect of the film and realize the recovery and utilization of heat. For this purpose, a preheating device for film products after one casting with heat exchange is provided.

The film product processing post-casting preheating device with heat exchange described in the present invention comprises a main frame, on which adjacent casting rollers and composite rollers are installed, and is characterized in that: a feeding gap is provided between the casting rollers and the composite rollers, a die head is provided above the feeding gap, a unwinding mechanism is provided on the left side of the composite roller, a coil to be processed is wound on the unwinding mechanism, a finished product winding mechanism is provided below the unwinding mechanism, the coil to be processed passes through the feeding gap, bypasses the composite roller and is wound on the finished product winding mechanism, a forced heat exchanger for cooling the casting roller is provided on the upper right part of the casting roller, an endothermic heat exchanger for cooling the casting roller is provided on the lower right part of the casting roller, a first air-cooled natural heat exchanger for cooling the composite roller is provided on the upper left part of the composite roller, and a second air-cooled natural heat exchanger for cooling the composite roller is provided on the lower left part of the composite roller.

Preferably, the forced heat exchanger includes a first reversing roller above the casting roller and a second reversing roller on the right side of the casting roller, a first driving roller is arranged on the right side of the first reversing roller, the second reversing roller is lower than the height of the first driving roller, and also includes a first thermal transfer belt that is closed by successively bypassing the first reversing roller, the casting roller, the second reversing roller, and the first driving roller, and a forced cooling system is arranged on the first thermal transfer belt between the first reversing roller and the first driving roller.

Preferably, the forced cooling system includes an upper refrigeration plate and a lower refrigeration plate which are arranged opposite to each other, the spacing between the upper refrigeration plate and the lower refrigeration plate is equal to the thickness of the first thermal transfer belt, the first thermal transfer belt passes between the upper refrigeration plate and the lower refrigeration plate, the upper and lower surfaces of the first thermal transfer belt are respectively in contact with the inner refrigeration surfaces of the upper refrigeration plate and the lower refrigeration plate, and can slide relatively.

Preferably, the heat absorption heat exchanger includes a third reversing roller located below the casting roller and a fourth reversing roller located on the right side of the casting roller, the fourth reversing roller is located below the second reversing roller, a second driving roller is arranged on the right side of the third reversing roller, the fourth reversing roller is higher than the height of the second driving roller, and also includes a second thermal transfer belt that is closed by successively bypassing the third reversing roller, the casting roller, the fourth reversing roller, and the second driving roller, and an air supply heat exchange system is arranged on the second thermal transfer belt between the third reversing roller and the second driving roller, and the air outlet of the air supply heat exchange system is used to heat the coil to be processed.

Preferably, the air supply heat exchange system includes a hollow heat collecting box, the second heat transfer belt passes through the heat collecting box, the upper surface of the heat collecting box is provided with an air inlet connected to its inner cavity, the lower surface of the heat collecting box is provided with an air outlet connected to its inner cavity, and the two ends of the heat collecting box are respectively equipped with a feed port A and a discharge port A for the second heat transfer belt to pass through, and also includes a hollow heating box, the coil to be processed passes through the heating box, the upper surface of the heating box is provided with an air outlet connected to its inner cavity, the lower surface of the heat collecting box is provided with an air inlet connected to its inner cavity, and the two ends of the heating box are respectively equipped with a feed port B and a discharge port B for the coil to be processed to pass through, the air outlet and the air inlet are connected by an air supply pipe, and the air supply pipe is provided with an exhaust fan for conveying hot air from the heat collecting box to the heating box.

Preferably, the first thermal transfer belt is a flexible belt, one section of which is attached to the outer wall on the right side of the casting roller, the circumferential speed of the casting roller is equal to the running speed of the first thermal transfer belt, and the first thermal transfer belt is driven by a first driving roller. The second thermal transfer belt is a flexible belt, one section of which is attached to the outer wall on the right side of the casting roller, the circumferential speed of the casting roller is equal to the running speed of the second thermal transfer belt, and the second thermal transfer belt is driven by a second driving roller. The first driving roller and the second driving roller have the same outer diameter and the same rotation speed.

Preferably, the first driving roller includes a driving drum, the driving drum has an outer rotor motor built in, the outer rotor motor includes an outer rotor and a motor shaft arranged in the center of the outer rotor, the outer rotor and the driving drum are coaxially arranged and connected as a whole, the motor shaft has two connecting ends connected to the main frame, and the first driving roller has the same structure as the second driving roller.

Preferably, the first thermally conductive belt is a thermally conductive flexible thermally conductive belt comprising multiple layers of parallel stacked graphene thermally conductive films; and one or more reinforcement layers, wherein the one or more reinforcement layers are distributed between the multiple layers of graphene thermally conductive films.

Preferably, the first air-cooled heat exchanger includes a fifth reversing roller located above the composite roller and a sixth reversing roller located on the left side of the composite roller, a third driving roller is arranged on the left side of the fifth reversing roller, the sixth reversing roller is lower than the height of the third driving roller, and also includes a third thermal transfer belt that is closed by successively bypassing the fifth reversing roller, the composite roller, the sixth reversing roller, and the third driving roller, a direct-blowing cooling fan A for cooling the third thermal transfer belt is arranged above the third thermal transfer belt between the fifth reversing roller and the third driving roller, and the direct-blowing cooling fan A blows directly toward the upper surface of the third thermal transfer belt.

Preferably, the second air-cooled heat exchanger includes a seventh reversing roller located below the composite roller and an eighth reversing roller located on the left side of the composite roller, a fourth drive roller is arranged on the left side of the seventh reversing roller, the eighth reversing roller is higher than the height of the fourth drive roller, and also includes a fourth thermal transfer belt that is closed by successively bypassing the eighth reversing roller, the composite roller, the seventh reversing roller, and the fourth drive roller, a direct-blowing cooling fan B for cooling the fourth thermal transfer belt is arranged below the fourth thermal transfer belt between the seventh reversing roller and the fourth drive roller, and the direct-blowing cooling fan B blows directly toward the lower surface of the fourth thermal transfer belt.

Preferably, the third thermal transfer belt is a flexible belt, one section of which is attached to the outer wall on the left side of the composite roller, the circumferential speed of the composite roller is equal to the running speed of the third thermal transfer belt, and the third thermal transfer belt is driven by a third driving roller. The fourth thermal transfer belt is a flexible belt, one section of which is attached to the outer wall on the left side of the composite roller, the circumferential speed of the rotation of the casting roller is equal to the running speed of the fourth thermal transfer belt, and the fourth thermal transfer belt is driven by a fourth driving roller, and the third driving roller and the fourth driving roller have the same outer diameter and the same rotation speed.

Preferably, the first heat transfer belt, the second heat transfer belt, the third heat transfer belt, and the fourth heat transfer belt have the same structure.

Preferably, the second belt transfer zone is divided into a heat absorption section, a heat exchange section and a tensioning section according to function. The heat absorption section, the heat exchange section and the tensioning section are connected in sequence to form a closed second belt transfer zone. The heat absorption section between the third reversing roller and the fourth reversing roller is attached to the outer wall on the right side of the casting roller. The heat on the casting roller is transferred to the heat absorption section. With the operation of the second belt transfer zone, the heat absorption section is converted into a heat exchange section between the third reversing roller and the second driving roller. The heat exchange section is cooled by the air supply heat exchange system, and the air supply heat exchange system preheats the coil to be processed.

Preferably, the first belt transfer zone is divided into a heat absorption section, a cooling section and a tensioning section according to function. The heat absorption section, the cooling section and the tensioning section are connected in sequence to form a closed first belt transfer zone. The heat absorption section between the first reversing roller and the second reversing roller is attached to the outer wall on the right side of the casting roller. The heat on the casting roller is transferred to the heat absorption section. With the operation of the first belt transfer zone, the heat absorption section is converted into a cooling section between the first reversing roller and the first driving roller, and the cooling section is further cooled by a forced cooling system.

Preferably, the third belt transfer zone is functionally divided into a heat absorption section, a cooling section and a tensioning section. The heat absorption section, the cooling section and the tensioning section are sequentially connected to form a closed third belt transfer zone. The heat absorption section between the fifth reversing roller and the sixth reversing roller is attached to the outer wall on the left side of the composite roller. The heat on the composite roller is transferred to the heat absorption section. With the operation of the third belt transfer zone, the heat absorption section is converted into a cooling section between the fifth reversing roller and the third driving roller. The cooling section is cooled by a direct-blowing cooling fan A.

Preferably, the fourth belt transfer zone is divided into a heat absorption section, a cooling section and a tensioning section according to function. The heat absorption section, the cooling section and the tensioning section are connected in sequence to form a closed fourth belt transfer zone. The heat absorption section between the seventh reversing roller and the eighth reversing roller is attached to the outer wall on the left side of the composite roller. The heat on the composite roller is transferred to the heat absorption section. With the operation of the fourth belt transfer zone, the heat absorption section is converted into a cooling section between the seventh reversing roller and the fourth driving roller, and the cooling section is cooled by a direct blowing cooling fan B.

Preferably, the tensioning section of the first belt transfer tape is tensioned by a tensioning wheel mechanism A, the tensioning wheel mechanism A can improve the fit between the first belt transfer tape and the casting roller, and a speed measuring unit A is provided on the tensioning wheel mechanism A; the tensioning section of the second belt transfer tape is tensioned by a tensioning wheel mechanism B, the tensioning wheel mechanism B can improve the fit between the second belt transfer tape and the casting roller, and a speed measuring unit B is provided on the tensioning wheel mechanism B.

Preferably, the first heat transfer belt and the second heat transfer belt have the same structure.

Preferably, the distance between the casting roll and the composite roll is adjustable.

Preferably, the casting roller is a water-cooled casting roller, which is used to assist the heat absorption heat exchanger and the forced heat exchanger in cooling the casting roller.

The coil to be processed on the unwinding mechanism passes through the material gap between the casting roller and the composite roller. At the same time, the film manufactured by the die head is composited between the casting roller and the composite roller. The composite film passes between the fourth heat transfer belt and the composite roller and is finally wound on the finished product winding mechanism.

Compared with the prior art, the present invention has the following beneficial effects:

The film product with heat exchange of the present invention is processed once and preheated after casting. The coil to be processed on the unwinding mechanism passes through the material gap between the casting roller and the composite roller after changing direction. At the same time, the film manufactured by the die head completes extrusion and composite between the casting roller and the composite roller. The composite film passes between the fourth heat transfer belt and the composite roller and is finally wound on the finished product winding mechanism. The fourth heat transfer belt and the composite roller work together to improve the composite effect of the film. The casting roller is cooled by the endothermic heat exchanger. The endothermic heat exchanger preheats the coil to be processed, which can also improve the composite effect of the film and realize heat recovery.

The film product with heat exchange described in the present invention is processed once and preheated after casting. The first thermal transfer belt is a thermally conductive flexible thermal transfer belt including multiple layers of parallel stacked graphene thermal conductive films; and one or more reinforcement layers, and the one or more reinforcement layers are distributed between the multiple layers of graphene thermal conductive films, so the heat exchange effect is better.

The film product with heat exchange of the present invention is processed once and preheated after casting. The film and non-woven fabric on the composite roller are pressed by the casting roller to form a composite process, which solves the problem of adhesion and tearing caused by the existing composite method and effectively improves the composite yield of non-woven fabric and PE\PP film.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

Fig. 1 is a schematic diagram of the structure of the present invention;

FIG2 is a schematic diagram of the external structure of the outer rotor motor of the present invention;

FIG3 is a structural diagram of a forced cooling system;

FIG4 is a structural diagram of the air supply heat exchange system.

In the figure: 1. die head 2. casting roller 3. composite roller 4. main frame 5. first reversing roller 6. second reversing roller 7. first driving roller 8. second driving roller 9. first belt transfer zone 10. air supply and heat exchange system 10.1. heat collecting box 10.2. exhaust fan 10.3. air inlet 10.4. air outlet 10.5. feed port A 10.6. discharge port A 10.7. air supply pipe 10.8. heating box 10.9. air outlet 10.10. air inlet 11. forced cooling system 11.1. upper refrigeration plate 11.2. lower refrigeration plate 12. unwinding mechanism 13. finished product rewinding mechanism 14. driving reel 15. outer rotor motor 16. third reversing roller 17. fourth reversing roller 18. second belt transfer zone 19. fifth reversing roller 20. Sixth reversing roller 30. Third driving roller 22. Third heat transfer belt 23. Direct blowing cooling fan A 24. Seventh reversing roller 25. Eighth reversing roller 26. Fourth driving roller 27. Fourth heat transfer belt 28. Direct blowing cooling fan B 29. Tensioner mechanism A 30. Tensioner mechanism B.

DETAILED DESCRIPTION

The present invention is further described below in conjunction with the accompanying drawings: The present invention is further illustrated below through specific embodiments, but the present invention is not limited thereto. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Non-woven composite film refers to a composite film formed by combining PE film and non-woven fabric under certain conditions. The current production process of non-woven composite film is: the film is cut into small rolls after film making, and then composited with non-woven fabric. The processed roll material is non-woven fabric, and the die head 1 manufactures PE film.

Embodiment 1, as shown in Fig. 1-2, a film product processing one-time casting preheating device with heat exchange comprises a main frame 4, on which a casting roller 2 and a composite roller 3 are installed adjacently, a material passing gap is provided between the casting roller 2 and the composite roller 3, a die head 1 is provided above the material passing gap, a unwinding mechanism 12 is provided on the left side of the composite roller 3, a coil to be processed is wound on the unwinding mechanism 12, and a finished product receiving and receiving device is provided below the unwinding mechanism 12. The winding mechanism 13, the coil to be processed passes through the material gap, bypasses the composite roller 3 and is wound on the finished product winding mechanism 13, the upper right part of the casting roller 2 is provided with a forced heat exchanger for cooling the casting roller 2, the lower right part of the casting roller 2 is provided with an endothermic heat exchanger for cooling the casting roller 2, the upper left part of the composite roller 3 is provided with an air-cooled natural heat exchanger for cooling the composite roller 3, and the lower left part of the composite roller 3 is provided with an air-cooled natural heat exchanger for cooling the composite roller 3.

The coil to be processed on the unwinding mechanism 12 passes through the material gap between the casting roller 2 and the composite roller 3 after changing direction. At the same time, the film manufactured by the die head 1 is composited between the casting roller 2 and the composite roller 3. The composite film passes between the fourth heat transfer belt 27 and the composite roller 3 and is finally wound on the finished product winding mechanism 13. The combined action of the fourth heat transfer belt 27 and the composite roller 3 improves the composite effect of the film. The casting roller 2 is cooled by the endothermic heat exchanger, and the endothermic heat exchanger is used to preheat the coil to be processed, which can also improve the composite effect of the film and realize heat recovery.

Embodiment 2, as shown in Figures 1-4, the film product processing one-time casting preheating device with heat exchange comprises a main frame 4, on which a casting roller 2 and a composite roller 3 are installed adjacently, a material passing gap is provided between the casting roller 2 and the composite roller 3, a die head 1 is provided above the material passing gap, a unwinding mechanism 12 is provided on the left side of the composite roller 3, a coil to be processed is wound on the unwinding mechanism 12, and a finished product winder is provided below the unwinding mechanism 12 Structure 13, the coil to be processed passes through the material gap, bypasses the composite roller 3 and is wound on the finished product winding mechanism 13, the upper right part of the casting roller 2 is provided with a forced heat exchanger for cooling the casting roller 2, the lower right part of the casting roller 2 is provided with an endothermic heat exchanger for cooling the casting roller 2, the upper left part of the composite roller 3 is provided with a first air-cooled natural heat exchanger for cooling the composite roller 3, and the lower left part of the composite roller 3 is provided with a second air-cooled natural heat exchanger for cooling the composite roller 3.

Furthermore, the forced heat exchanger includes a first reversing roller 5 located above the casting roller 2, and a second reversing roller 6 located on the right side of the casting roller 2. A first driving roller 7 is arranged on the right side of the first reversing roller 5, and the second reversing roller 6 is lower than the height of the first driving roller 7. It also includes a first thermal transfer belt 9 that is closed after successively bypassing the first reversing roller 5, the casting roller 2, the second reversing roller 6, and the first driving roller 7. A forced cooling system 11 is arranged on the first thermal transfer belt 9 between the first reversing roller 5 and the first driving roller 7.

Furthermore, the forced cooling system 11 includes an upper refrigeration plate 11.1 and a lower refrigeration plate 11.2 that are relatively arranged, and the distance between the upper refrigeration plate 11.1 and the lower refrigeration plate 11.2 is equal to the thickness of the first thermal transfer belt 9. The first thermal transfer belt 9 passes between the upper refrigeration plate 11.1 and the lower refrigeration plate 11.2. The upper and lower surfaces of the first thermal transfer belt 9 are respectively in contact with the inner refrigeration surfaces of the upper refrigeration plate 11.1 and the lower refrigeration plate 11.2, and can slide relatively.

Furthermore, the heat absorption heat exchanger includes a third reversing roller 16 located below the casting roller 2 and a fourth reversing roller 17 located on the right side of the casting roller 2, the fourth reversing roller 17 is located below the second reversing roller 6, a second driving roller 8 is arranged on the right side of the third reversing roller 16, the fourth reversing roller 17 is higher than the height of the second driving roller 8, and also includes a second closed belt 18 formed after successively bypassing the third reversing roller 16, the casting roller 2, the fourth reversing roller 17, and the second driving roller 8, and an air supply heat exchange system 10 is arranged on the second belt 18 between the third reversing roller 16 and the second driving roller 8, and the air outlet of the air supply heat exchange system 10 is used to heat the coil to be processed.

Furthermore, the air supply heat exchange system 10 includes a hollow heat collection box 10.1, the second heat transfer belt 18 passes through the heat collection box 10.1, the upper surface of the heat collection box 10.1 is provided with an air inlet 10.3 connected to its inner cavity, the lower surface of the heat collection box 10.1 is provided with an air outlet 10.4 connected to its inner cavity, and the two ends of the heat collection box 10.1 are respectively provided with a feed port A10.5 and a discharge port A10.6 for the second heat transfer belt 18 to pass through, and also includes a hollow heating box 10.8, the coil to be processed is self-heated The heating box 10.8 is penetrated by an air outlet 10.9 connected to its inner cavity on the upper surface of the heating box 10.8, and an air inlet 10.10 connected to its inner cavity is provided on the lower surface of the heat collecting box 10.1. A material inlet B and a material outlet B for the coils to be processed are respectively installed at both ends of the heating box 10.8. The air outlet 10.4 is connected to the air inlet 10.10 through an air supply pipe 10.7, and an exhaust fan 10.2 for conveying hot air from the heat collecting box 10.1 to the heating box 10.8 is installed on the air supply pipe 10.7.

Furthermore, the first heat transfer belt 9 is a flexible belt, one section of which is attached to the outer wall on the right side of the casting roller 2, the circumferential speed of the casting roller 2 is equal to the running speed of the first heat transfer belt 9, the first heat transfer belt 9 is driven by the first driving roller 7, the second heat transfer belt 18 is a flexible belt, one section of which is attached to the outer wall on the right side of the casting roller 2, the circumferential speed of the casting roller 2 is equal to the running speed of the second heat transfer belt 18, the second heat transfer belt 18 is driven by the second driving roller 8, the first driving roller 7 and the second driving roller 8 have the same outer diameter and the same rotation speed.

Furthermore, the first driving roller 7 includes a driving reel 14, and the driving reel 14 has an outer rotor motor 15 built in. The outer rotor motor 15 includes an outer rotor and a motor shaft arranged at the center of the outer rotor. The outer rotor and the driving reel 14 are coaxially arranged and connected as a whole. The motor shaft has two connecting ends connected to the main frame 4. The first driving roller 7 has the same structure as the second driving roller 8.

Furthermore, the first thermal transfer belt 9 is a thermally conductive flexible thermal transfer belt including multiple layers of parallel stacked graphene thermal conductive films; and one or more reinforcement layers, wherein the one or more reinforcement layers are distributed between the multiple layers of graphene thermal conductive films.

Furthermore, the first air-cooled heat exchanger includes a fifth reversing roller 19 located above the composite roller 3 and a sixth reversing roller 20 located on the left side of the composite roller 3. A third driving roller 21 is arranged on the left side of the fifth reversing roller 19. The sixth reversing roller 20 is lower than the height of the third driving roller 21. It also includes a third thermal transfer belt 22 that is closed after bypassing the fifth reversing roller 19, the composite roller 3, the sixth reversing roller 20, and the third driving roller 21 in sequence. A direct-blowing cooling fan A23 for cooling the third thermal transfer belt 22 is arranged above the third thermal transfer belt 22 between the fifth reversing roller 19 and the third driving roller 21. The direct-blowing cooling fan A23 blows directly toward the upper surface of the third thermal transfer belt 22.

Furthermore, the second air-cooled heat exchanger includes a seventh reversing roller 24 located below the composite roller 3 and an eighth reversing roller 25 located on the left side of the composite roller 3. A fourth drive roller 26 is arranged on the left side of the seventh reversing roller 24. The eighth reversing roller 25 is higher than the height of the fourth drive roller 26. It also includes a fourth heat transfer belt 27 that is closed after bypassing the eighth reversing roller 25, the composite roller 3, the seventh reversing roller 24, and the fourth drive roller 26 in sequence. A direct-blowing cooling fan B28 for cooling the fourth heat transfer belt 27 is arranged below the fourth heat transfer belt 27 between the seventh reversing roller 24 and the fourth drive roller 26. The direct-blowing cooling fan B28 blows directly toward the lower surface of the fourth heat transfer belt 27.

Furthermore, the third heat transfer belt 22 is a flexible belt, one section of which is attached to the outer wall on the left side of the composite roller 3, the circumferential speed of the composite roller 3 is equal to the running speed of the third heat transfer belt 22, the third heat transfer belt 22 is driven by the third driving roller 21, the fourth heat transfer belt 27 is a flexible belt, one section of which is attached to the outer wall on the left side of the composite roller 3, the circumferential speed of the rotation of the composite roller 3 is equal to the running speed of the fourth heat transfer belt 27, the fourth heat transfer belt 27 is driven by the fourth driving roller 26, the third driving roller 21 and the fourth driving roller 26 have the same outer diameter and the same rotation speed.

Furthermore, the first heat transfer belt 9, the second heat transfer belt 18, the third heat transfer belt 22, and the fourth heat transfer belt 27 have the same structure.

Furthermore, the second thermal transfer belt 18 is functionally divided into a heat absorption section, a heat exchange section and a tensioning section. The heat absorption section, the heat exchange section and the tensioning section are sequentially connected to form a closed second thermal transfer belt 18. The heat absorption section between the third reversing roller 16 and the fourth reversing roller 17 is attached to the outer wall on the right side of the casting roller 2. The heat on the casting roller 2 is transferred to the heat absorption section. With the operation of the second thermal transfer belt 18, the heat absorption section is converted into a heat exchange section between the third reversing roller 16 and the second driving roller 8. The heat exchange section is cooled by the air supply heat exchange system 10, and the air supply heat exchange system 10 preheats the coil to be processed.

Furthermore, the first belt transfer layer 9 is functionally divided into a heat absorption section, a cooling section and a tensioning section. The heat absorption section, the cooling section and the tensioning section are sequentially connected to form a closed first belt transfer layer 9. The heat absorption section between the first reversing roller 5 and the second reversing roller 6 is attached to the outer wall on the right side of the casting roller 2. The heat on the casting roller 2 is transferred to the heat absorption section. As the first belt transfer layer 9 runs, the heat absorption section is converted into a cooling section between the first reversing roller 5 and the first driving roller 7. The cooling section is further cooled by the forced cooling system 11.

Furthermore, the third thermal transfer belt 22 is functionally divided into a heat absorption section, a cooling section and a tensioning section. The heat absorption section, the cooling section and the tensioning section are sequentially connected to form a closed third thermal transfer belt 22. The heat absorption section between the fifth reversing roller 19 and the sixth reversing roller 20 is attached to the outer wall on the left side of the composite roller 3. The heat on the composite roller 3 is transferred to the heat absorption section. As the third thermal transfer belt 22 runs, the heat absorption section is converted into a cooling section between the fifth reversing roller 19 and the third driving roller 21. The cooling section is cooled by a direct blowing cooling fan A23.

Furthermore, the fourth belt transfer layer 27 is functionally divided into a heat absorption section, a cooling section and a tensioning section. The heat absorption section, the cooling section and the tensioning section are sequentially connected to form a closed fourth belt transfer layer 27. The heat absorption section between the seventh reversing roller 24 and the eighth reversing roller 25 is attached to the outer wall on the left side of the composite roller 3. The heat on the composite roller 3 is transferred to the heat absorption section. With the operation of the fourth belt transfer layer 27, the heat absorption section is converted into a cooling section between the seventh reversing roller 24 and the fourth driving roller 26. The cooling section is cooled by a direct blowing cooling fan B28.

Furthermore, the tensioning wheel mechanism A29 is used to tighten the tensioning section of the first heat transfer belt 9, and the tensioning wheel mechanism A29 can improve the fit between the first heat transfer belt 9 and the casting roller 2, and the tensioning wheel mechanism A29 is provided with a speed measuring unit A; the tensioning wheel mechanism B30 is used to tighten the tensioning section of the second heat transfer belt 18, and the tensioning wheel mechanism B30 can improve the fit between the second heat transfer belt 18 and the casting roller 2, and the tensioning wheel mechanism B30 is provided with a speed measuring unit B.

Furthermore, the first heat transfer belt 9 and the second heat transfer belt 18 have the same structure.

Furthermore, the distance between the casting roller 2 and the composite roller 3 is adjustable.

Furthermore, the casting roller 2 is a water-cooled casting roller, which is used to assist the heat absorption heat exchanger and the forced heat exchanger to cool the casting roller 2.

Furthermore, the roll to be processed on the unwinding mechanism 12 passes through the material gap between the casting roller 2 and the composite roller 3, and at the same time, the film manufactured by the die head 1 is composited between the casting roller 2 and the composite roller 3, and the composite film passes between the fourth transfer belt 27 and the composite roller 3, and is finally wound on the finished product winding mechanism 13.

The film product with heat exchange described in the present invention is processed once and preheated after casting. The coil to be processed on the unwinding mechanism passes through the material gap between the casting roller and the composite roller after changing direction. At the same time, the film manufactured by the die head is composited between the casting roller and the composite roller. The composite film passes between the fourth heat transfer belt and the composite roller and is finally wound on the finished product winding mechanism. The combined action of the fourth heat transfer belt and the composite roller improves the composite effect of the film. The casting roller is cooled by an endothermic heat exchanger. The endothermic heat exchanger preheats the coil to be processed, which can also improve the composite effect of the film and realize heat recovery.

The film product with heat exchange described in the present invention is processed once and preheated after casting. The first thermal transfer belt is a thermally conductive flexible thermal transfer belt including multiple layers of parallel stacked graphene thermal conductive films; and one or more reinforcement layers, and the one or more reinforcement layers are distributed between the multiple layers of graphene thermal conductive films, so the heat exchange effect is better.

The film product with heat exchange of the present invention is processed once and preheated after casting. The film and non-woven fabric on the composite roller are pressed by the casting roller to form a composite process, which solves the problem of adhesion and tearing caused by the existing composite method and effectively improves the composite yield of non-woven fabric and PE\PP film.

The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims (8)

1. The utility model provides a film goods processing one time casting back preheating device with heat exchange, includes the main frame, install casting roller and the compound roller of adjacent setting on the main frame, its characterized in that: the casting roll and the composite roll are provided with a material passing gap, a die head is arranged above the material passing gap, the left side of the composite roll is provided with an unreeling mechanism, a coil material to be processed is wound on the unreeling mechanism, the lower part of the unreeling mechanism is provided with a finished product winding mechanism, the coil material to be processed passes through the material passing gap and winds on the finished product winding mechanism after bypassing the composite roll, the right upper part of the casting roll is provided with a forced heat exchanger for cooling the casting roll, the right lower part of the casting roll is provided with a heat absorption heat exchanger for cooling the casting roll, the left upper part of the composite roll is provided with a first air cooling natural heat exchanger for cooling the composite roll, the left lower part of the composite roll is provided with a second air cooling natural heat exchanger for cooling the composite roll, the heat absorption heat exchanger comprises a third reversing roll arranged below the casting roll and a fourth reversing roll arranged on the right side of the casting roll, the fourth reversing roller is positioned below the second reversing roller, the right side of the third reversing roller is provided with a second driving roller, the fourth reversing roller is higher than the height where the second driving roller is positioned, the device also comprises a second closed heat transfer belt which is formed by sequentially bypassing the third reversing roller, the casting roller, the fourth reversing roller and the second driving roller, an air supply heat exchange system is arranged on the second heat transfer belt between the third reversing roller and the second driving roller, an air outlet of the air supply heat exchange system is used for heating coiled materials to be processed, the air supply heat exchange system comprises a heat collection box body which is arranged in a hollow mode, the second heat transfer belt penetrates through the heat collection box body, an air inlet hole which is communicated with an inner cavity of the heat collection box body is arranged on the upper surface of the heat collection box body, an air outlet which is communicated with the inner cavity of the heat collection box body is arranged on the lower surface of the heat collection box body, the utility model discloses a heat collection box, including heat collection box, heating box, air inlet, air outlet and air supply pipe, feed inlet A, discharge gate A that the heat collection box's both ends are installed respectively and are supplied the second heat transfer area to pass, still include the heating box that the cavity set up, wait to process the coil stock and run through from the heating box in, the upper surface of heating box sets up the venthole rather than the inner chamber is linked together, the lower surface of heat collection box is provided with the air inlet rather than the inner chamber is linked together, feed inlet B, discharge gate B that supply waiting to process the coil stock to pass are installed respectively at the both ends of heating box, through blast pipe intercommunication between gas outlet and the air inlet, install the air exhaust fan that is arranged in carrying hot-blast from the heat collection box to the heating box on the blast pipe.

2. The preheating device after primary casting for film product processing with heat exchange according to claim 1, wherein the forced heat exchanger comprises a first reversing roller above the casting roller and a second reversing roller on the right side of the casting roller, a first driving roller is arranged on the right side of the first reversing roller, the second reversing roller is lower than the first driving roller in height, and the preheating device further comprises a first heat transfer belt which is formed by sequentially bypassing the first reversing roller, the casting roller, the second reversing roller and the first driving roller, wherein a forced cooling system is arranged on the first heat transfer belt between the first reversing roller and the first driving roller.

3. The preheating device after one-time casting for processing the film product with heat exchange according to claim 2, wherein the forced cooling system comprises an upper refrigerating plate and a lower refrigerating plate which are oppositely arranged, the distance between the upper refrigerating plate and the lower refrigerating plate is equal to the thickness of the first heat transfer belt, the first heat transfer belt passes through the space between the upper refrigerating plate and the lower refrigerating plate, and the upper surface and the lower surface of the first heat transfer belt are respectively attached to the inner side refrigerating surfaces of the upper refrigerating plate and the lower refrigerating plate and can slide relatively.

4. A film product processing post-casting preheating device with heat exchange according to claim 3, wherein the first heat transfer belt is a flexible belt, a section of the first heat transfer belt is attached to the outer wall on the right side of the casting roller, the peripheral speed of rotation of the casting roller is equal to the running speed of the first heat transfer belt, the first heat transfer belt is driven by a first driving roller, the second heat transfer belt is a flexible belt, a section of the second heat transfer belt is attached to the outer wall on the right side of the casting roller, the peripheral speed of rotation of the casting roller is equal to the running speed of the second heat transfer belt, the second heat transfer belt is driven by a second driving roller, the outer diameters of the first driving roller and the second driving roller are the same, and the rotating speeds are consistent.

5. The one-time casting preheating device for film products with heat exchange according to claim 4, wherein the first driving roller comprises a driving roller, an outer rotor motor is arranged in the driving roller, the outer rotor motor comprises an outer rotor and a motor shaft arranged in the center of the outer rotor, the outer rotor and the driving roller are coaxially arranged and connected into a whole, the motor shaft is provided with two connecting ends and is connected to a main frame, and the first driving roller and the second driving roller have the same structure.

6. The post-processing, casting and preheating device for film products with heat exchange according to claim 5, wherein the first heat conducting belt is a heat conducting flexible heat conducting belt comprising a plurality of layers of graphene heat conducting films stacked in parallel; and one or more reinforcing layers distributed between the plurality of graphene heat conducting films.

7. The preheating device after primary casting for film product processing with heat exchange according to claim 6, further comprising a first air-cooled heat exchanger, wherein the first air-cooled heat exchanger comprises a fifth reversing roller above the composite roller and a sixth reversing roller at the left side of the composite roller, a third driving roller is arranged at the left side of the fifth reversing roller, the sixth reversing roller is lower than the third driving roller in height, a third heat transfer belt is formed by sequentially bypassing the fifth reversing roller, the composite roller, the sixth reversing roller and the third driving roller, a direct-blowing cooling fan A for cooling the third heat transfer belt is arranged above the third heat transfer belt between the fifth reversing roller and the third driving roller, and the direct-blowing cooling fan A is used for direct blowing towards the upper surface of the third heat transfer belt.

8. The preheating device after primary casting for film product processing with heat exchange according to claim 7, further comprising a second air-cooled heat exchanger, wherein the second air-cooled heat exchanger comprises a seventh reversing roller below the composite roller and an eighth reversing roller at the left side of the composite roller, the left side of the seventh reversing roller is provided with a fourth driving roller, the eighth reversing roller is higher than the fourth driving roller in height, the preheating device further comprises a fourth heat transfer belt which is formed by sequentially bypassing the eighth reversing roller, the composite roller, the seventh reversing roller and the fourth driving roller, a direct-blowing cooling fan B for cooling the fourth heat transfer belt is arranged below the fourth heat transfer belt between the seventh reversing roller and the fourth driving roller, and the direct-blowing cooling fan B is used for direct blowing towards the lower surface of the fourth heat transfer belt.