Film laminating equipment with double-layer unwinding function
By designing a double-layer unwinding device and a five-roller coating device, the problems of material offset and misalignment in traditional coating equipment are solved, achieving high-precision alignment and efficient production of coated products.
Patent Information
- Application Number
- CN202520324952.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-02-27
AI Technical Summary
Traditional laminating equipment often uses a single-layer unwinding structure, which leads to material misalignment, displacement, and uneven edges, affecting production efficiency. Existing correction mechanisms are difficult to adapt to the high-precision alignment requirements of double-layer synchronous unwinding.
It adopts a double-layer unwinding device, equipped with a web-correcting mechanism and a five-roller coating device, including an unwinding platform, a double-layer unwinding mechanism, a web-correcting controller, an ultrasonic sensor, a moving wheel system and an air shaft, to achieve synchronous web-correcting and lamination of coated products.
It achieves high-precision alignment of coated products, improves the flatness and uniformity of sheet products, and enhances production efficiency and coating quality.
Smart Images
Figure CN223803097U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of plastic sheet production equipment, in particular to a double-layer unwinding film coating equipment. BACKGROUND
[0002] Traditional film coating equipment mostly adopts single-layer unwinding structure, and the material is easy to deviate during unwinding, which leads to problems such as film coating layer misalignment and edge misalignment, and frequent shutdown is required to adjust the unwinding direction, which affects the production efficiency. The existing film coating equipment also has a deviation correction mechanism designed for single-layer winding material unwinding. Such deviation correction mechanism is difficult to adapt to the high-precision alignment requirements of double-layer synchronous unwinding. SUMMARY
[0003] In order to solve the above technical problems, the purpose of the present application is to provide a double-layer unwinding film coating equipment.
[0004] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows: a double-layer unwinding film coating equipment arranged on one side of an extrusion die for extruding a base product, the film coating equipment comprising:
[0005] An unwinding platform supported on a production line;
[0006] A double-layer unwinding device comprising a pair of unwinding mechanisms installed side by side on the unwinding platform and a deviation correction mechanism in transmission connection with the pair of unwinding mechanisms, the pair of unwinding mechanisms respectively unwinding film coating products, and the deviation correction mechanism being used to synchronously adjust the positions of the pair of unwinding mechanisms in the transverse direction; and
[0007] A five-roller film coating device located below the unwinding platform and aligned with an extrusion outlet of the extrusion die, the five-roller film coating device comprising a calender mechanism and a pressing mechanism arranged on the upper side of the calender mechanism, the calender mechanism comprising a first roller, a second roller, a third roller, a fourth roller and a fifth roller arranged in sequence from front to back, and the pressing mechanism comprising a preheating roller and a pressing roller; the pressing roller is located above the third roller, and the gap between the pressing roller and the third roller is adjustable.
[0008] Among them, the two layers of film coating products unwound by the pair of unwinding mechanisms are compounded with the base product between the pressing roller and the third roller.
[0009] In the above technical scheme, further preferably, each of the unwinding mechanisms comprises an unwinding rack and a pair of air expansion shafts, the pair of air expansion shafts are both extended along the transverse direction and rotatably installed on the unwinding rack, and the pair of air expansion shafts are configured to alternately unwind the film coating products.
[0010] In the above technical solution, further preferably, each of the unwinding racks is further provided with a pair of clamping heads clamping both ends of the air expansion shaft and a magnetic powder brake in transmission connection with the air expansion shaft, and the magnetic powder brake is used to drive the air expansion shaft to rotate around its own axis.
[0011] In the above technical solution, further preferably, the deviation rectifying mechanism comprises a deviation rectifying controller, an ultrasonic sensor, a moving wheel system and a deviation rectifying cylinder, each of the unwinding mechanisms is provided with one of the ultrasonic sensors, the moving wheel systems and the deviation rectifying cylinders, the moving wheel system is installed at the bottom of the corresponding unwinding rack, the ultrasonic sensor is installed on one side of the unwinding rack, the deviation rectifying cylinder is connected with the unwinding rack to drive the unwinding mechanism to move in the left-right direction, and the deviation rectifying controller is in signal connection with the deviation rectifying cylinder and the ultrasonic sensor.
[0012] In the above technical solution, further preferably, each of the unwinding mechanisms further comprises a wide-width roller parallel to the air expansion shaft, and each of the wide-width rollers is located between the corresponding unwinding rack and the pressing mechanism.
[0013] In the above technical solution, further preferably, the pressing mechanism comprises a pressing cylinder in transmission connection with the pressing roller to adjust the gap between the pressing roller and the third roller.
[0014] In the above technical solution, further preferably, the calendering mechanism comprises a calendering rack, and the first roller and the fifth roller are movably installed on the calendering rack in the radial direction thereof.
[0015] In the above technical solution, further preferably, the calendering mechanism further comprises a first gap adjusting assembly in transmission connection with the first roller and a second gap adjusting assembly in transmission connection with the fifth roller, the first gap adjusting assembly is used to adjust the gap between the first roller and the second roller, and the second gap adjusting assembly is used to adjust the gap between the fifth roller and the fourth roller.
[0016] Compared with the prior art, the present application has the following beneficial effects:
[0017] In the present application, the two unwinding mechanisms for unwinding the film-coated products have the deviation rectifying mechanism, which synchronously rectifies the unwinding directions of the two film-coated products being unwound at the same time, ensures the alignment of the film, and improves the flatness and uniformity of the film-coated sheet products. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 A structure schematic view of a film-coating equipment provided by the present application is arranged on one side of an extrusion die.
[0019] Figure 2 is a top view of the film coating equipment in Figure 1
[0020] Figure 3 is a perspective view of the double-layer unwinding device installed on the unwinding platform in Figure 1
[0021] Figure 4 is a front view of the double-layer unwinding device installed on the unwinding platform in Figure 3
[0022] Figure 5 is a side view of the unwinding mechanism in Figure 3
[0023] Wherein: 100, film coating equipment; 10, unwinding platform; 20, double-layer unwinding device; 1, unwinding mechanism; 11, unwinding frame; 12, air expansion shaft; 13, chuck; 14, magnetic powder brake; 15, wide roller; 2, deviation correction mechanism; 21, ultrasonic sensor; 22, moving wheel system; 23, deviation correction cylinder; 24, deviation correction control panel; 30, five-roller film coating device; 3, calender mechanism; 31, first roller; 32, second roller; 33, third roller; 34, fourth roller; 35, fifth roller; 36, calender frame; 37, first gap adjusting assembly; 38, second gap adjusting assembly; 4, pressing mechanism; 41, preheating roller; 42, pressing roller; 43, pressing cylinder; 5, moving mechanism; 51, moving guide rail; 52, moving wheel; 53, moving motor; 200, extrusion die. DETAILED DESCRIPTION
[0024] To describe the technical content, structural features, purposes achieved and effects of the application in detail, the technical solutions in the embodiments of the application will be described below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, not all the embodiments. In the following description, for the purpose of explanation, many specific details are set forth in order to provide a thorough understanding of various exemplary embodiments or implementations of the application. However, various exemplary embodiments can also be implemented without these specific details or in one or more equivalent arrangements. In addition, various exemplary embodiments can be different, but not necessarily exclusive. For example, the specific shape, structure and characteristics of the exemplary embodiments can be used or implemented in another exemplary embodiment without departing from the inventive concept.
[0025] The application provides a double-layer unwinding film coating equipment, such as Figure 1 As shown, the film coating device 100 is used for single-layer and double-layer film coating of the base layer product extruded by the extrusion die 200. The film coating device 100 comprises a unwinding platform 10, a double-layer unwinding device 20 mounted on the unwinding platform 10, and a five-roll film coating device 30 mounted on the lower side of the unwinding platform 10. The unwinding platform 10 is supported on the sheet production line and supports the double-layer unwinding device 20 above the five-roll film coating device 30. The double-layer unwinding device 20 releases single-layer or double-layer film coating products to the five-roll film coating device 30, and the five-roll film coating device 30 composites the film coating products to the base layer product extruded by the extrusion die 200.
[0026] As shown in Figure 3 , 4 , the double-layer unwinding device 20 comprises a pair of unwinding mechanisms 1 mounted side by side on the unwinding platform 10 in the front-rear direction and a correction mechanism 2 in transmission connection with the pair of unwinding mechanisms 1. The pair of unwinding mechanisms 1 respectively unwind the film coating products, and the correction mechanism 2 is used to adjust the position of each unwinding mechanism 1 unwinding the film coating products in the left-right direction, so that the two layers of film coating products and the base layer product are aligned, and the unwinding direction of the film coating products is corrected.
[0027] As shown in Figures 2-5 , each unwinding mechanism 1 comprises an unwinding frame 11 and a pair of expansion shafts 12. The pair of expansion shafts 12 are both extended in the left-right direction and rotatably mounted on the unwinding frame 11 around their own axis. The pair of expansion shafts 12 are configured to alternately unwind the film coating products, realizing uninterrupted unwinding and improving film coating efficiency. Each unwinding frame 11 is also provided with a pair of chucks 13 clamping both ends of the corresponding expansion shaft 12 and a magnetic powder brake 14 in transmission connection with the expansion shaft 12. The pair of chucks 13 clamp the expansion shaft 12 at both ends of the expansion shaft 12, facilitating the disassembly and assembly of the expansion shaft 12 and improving the efficiency of roll replacement. The magnetic powder brake 14 drives the expansion shaft 12 to rotate around its own axis by clamping the pair of chucks 13 of the expansion shaft 12, so that the expansion shaft 12 releases the film coating product with constant tension.
[0028] The web-correcting mechanism 2 includes an ultrasonic sensor 21, a moving wheel system 22, and a web-correcting cylinder 23. Each unwinding mechanism 1 is equipped with one ultrasonic sensor 21, one moving wheel system 22, and one web-correcting cylinder 23. The moving wheel system 22 is installed at the bottom of the corresponding unwinding frame 11, allowing the unwinding frame 11 to move left and right relative to the unwinding platform 10. The ultrasonic sensor 21 is installed on one side of the unwinding frame 11 and is used to detect the position of the roll material on each air shaft 12. The cylinder body of the web-correcting cylinder 23 is fixedly installed on the unwinding platform 10, and its rod is connected to the unwinding frame 11. When the rod extends or retracts within the cylinder, the unwinding frame 11 moves back and forth in the left and right direction along with the rod. The web-correcting mechanism 2 also includes a web-correcting controller, which is connected to the web-correcting cylinders 23 and ultrasonic sensors 21 of the pair of unwinding mechanisms 1 to form a closed-loop control. The web-correcting controller controls the web-correcting cylinders 23 to operate based on the detection results transmitted by each ultrasonic sensor 21, thereby adjusting the position of each unwinding frame 11 to ensure that the two layers of coated products unwound by the pair of unwinding mechanisms 1 are aligned with each other, achieving dynamic web-correction. In this embodiment, each unwinding mechanism 1 is equipped with a web-correcting control panel 24, which can display the current position information of the unwinding mechanism and can also be manually operated by the operator for web-correction.
[0029] Each unwinding mechanism 1 also includes a wide-width roller 15 parallel to the air shaft 12. Each wide-width roller 15 is located below the corresponding unwinding frame 11 and is used to flatten the coated product unwound by the corresponding unwinding frame 11 to ensure the flatness of the coated product.
[0030] like Figure 1 As shown, the five-roller coating apparatus 30 includes a calendering mechanism 3 and a pressing mechanism 4 arranged on the upper side of the calendering mechanism 3. The calendering mechanism 3 includes a first roller 31, a second roller 32, a third roller 33, a fourth roller 34, and a fifth roller 35 arranged sequentially from front to back. The first roller 31, the second roller 32, the third roller 33, the fourth roller 34, and the fifth roller 35 all extend in the left-right direction. The pressing mechanism 4 includes a preheating roller 41 and a pressing roller 42. The pressing roller 42 is located above the third roller 33, and the gap between the pressing roller 42 and the third roller 33 is adjustable.
[0031] The base layer product extruded by the extrusion die 200 passes the first roller 31, the second roller 32, the third roller 33, the fourth roller 34 and the fifth roller 35 in turn; the film product unwound by the front unwinding mechanism 1 is flattened by the corresponding wide roller 15 and then passes the pressing roller 42 and is conveyed between the pressing roller 42 and the third roller 33; the film product unwound by the rear unwinding mechanism 1 is flattened by the corresponding wide roller 15 and then passes the preheating roller 41 and is conveyed between the pressing roller 42 and the third roller 33 after being preheated by the preheating roller 41. The preheating roller 41 is connected with a heating medium to increase the temperature of the roller surface, so that the film product passing the preheating roller 41 can be preheated, and the film product preheated by the preheating roller 41 can be better combined with another layer of film product, and the film efficiency is improved. The two layers of film product and the base layer product are combined between the pressing roller 42 and the third roller 33, so as to form the film-coated sheet product.
[0032] The pressing mechanism 4 further comprises a pressing cylinder 43, which is in driving connection with the pressing roller 42. The pressing cylinder 43 drives the pressing roller 42 to move along the up-down direction, so as to adjust the gap between the pressing roller 42 and the third roller 33.
[0033] The calendering mechanism 3 further comprises a calendering frame 36. The first roller 31, the second roller 32, the third roller 33, the fourth roller 34 and the fifth roller 35 are rotatably installed on the calendering frame 36 along the respective axial lines. The first roller 31 and the fifth roller 35 are movably installed on the calendering frame 36 along the respective radial directions. The first roller 31, the second roller 32, the third roller 33, the fourth roller 34 and the fifth roller 35 are in communication with a roller temperature controller (not shown in the figure). The roller temperature controller adjusts the roller surface temperature of each roller, so as to facilitate the combination and calendering of the products by the calendering mechanism 3 and improve the production efficiency.
[0034] The first roller 31 is in driving connection with a first gap adjusting assembly 37. The first gap adjusting assembly 37 drives the first roller 31 to move on the calendering frame 36, so as to adjust the size of the gap between the first roller 31 and the second roller 32. The extrusion port of the extrusion die 200 is aligned with the gap between the first roller 31 and the second roller 32, and the first gap adjusting assembly 37 can adapt to base layer products of different thicknesses. The fifth roller 35 is in driving connection with a second gap adjusting assembly 38. The second gap adjusting assembly 38 drives the fifth roller 35 to move on the calendering frame 36, so as to adjust the size of the gap between the fifth roller 35 and the fourth roller 34. The fifth roller 35 can adapt to sheet products of different thicknesses and effectively calender the combined sheet product.
[0035] The five-roller laminating device 30 further comprises a moving mechanism 5, which comprises a moving guide rail 51 extending in the front-back direction, a plurality of moving wheels 52 rotatably installed at the bottom of the calender frame 36 and a moving motor 53. The moving wheels 52 are matched with the moving guide rail 51, and the moving motor 53 drives the five-roller laminating device 30 to move back and forth in the front-back direction through a gear and rack mechanism, so as to facilitate the five-roller laminating device 30 to approach and move away from the extrusion die 200.
[0036] In the present application, the two unwinding mechanisms for unwinding the laminated products have a correction mechanism to simultaneously correct the unwinding direction of the two laminated products being unwound, to ensure the alignment of the laminating, and to improve the flatness and uniformity of the sheet product laminating.
[0037] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and the scope of protection of the present application is defined by the appended claims, the specification and their equivalents.
Claims
1. A double-layer unwinding film-laminating apparatus arranged on one side of an extrusion die for extruding a base product, characterized by, The film coating equipment comprises: a unwinding platform supported on a production line; a double-layer unwinding device comprising a pair of unwinding mechanisms installed side by side on the unwinding platform and a deviation rectifying mechanism in transmission connection with the pair of unwinding mechanisms, the pair of unwinding mechanisms respectively unwinding film products, and the deviation rectifying mechanism being used for synchronously adjusting the positions of the pair of unwinding mechanisms in unwinding the film products in a transverse direction; and a five-roller film coating device located below the unwinding platform and aligned with an extrusion outlet of the extrusion die, the five-roller film coating device comprising a calender mechanism and a pressing mechanism arranged on the upper side of the calender mechanism, the calender mechanism comprising a first roller, a second roller, a third roller, a fourth roller and a fifth roller arranged in sequence from front to back, and the pressing mechanism comprising a preheating roller and a pressing roller, the pressing roller being located above the third roller and the gap between the pressing roller and the third roller being adjustable. The two layers of film products unwound by the pair of unwinding mechanisms are compounded with the base product between the pressing roller and the third roller.
2. The film coating apparatus according to claim 1, wherein Each of the unwinding mechanisms comprises an unwinding frame and a pair of air expansion shafts, the pair of air expansion shafts being extended along the transverse direction and rotatably installed on the unwinding frame, and the pair of air expansion shafts being configured to alternately unwind the film products.
3. The film coating apparatus according to claim 2, wherein Each of the unwinding frames is further provided with a pair of chucks clamping the two end portions of the air expansion shafts and a magnetic powder brake in transmission connection with the air expansion shaft, the magnetic powder brake being used for driving the air expansion shaft to rotate around its own axis.
4. The film coating apparatus according to claim 2, wherein The deviation rectifying mechanism comprises a deviation rectifying controller, an ultrasonic sensor, a moving wheel system and a deviation rectifying cylinder, each of the unwinding mechanisms being provided with one of the ultrasonic sensors, the moving wheel systems and the deviation rectifying cylinders, the moving wheel system being installed on the bottom of the corresponding unwinding frame, the ultrasonic sensor being installed on one side of the unwinding frame, the deviation rectifying cylinder being connected with the unwinding frame to drive the unwinding mechanism to move in the left-right direction, and the deviation rectifying controller being in signal connection with the deviation rectifying cylinder and the ultrasonic sensor.
5. The film coating apparatus according to claim 2, wherein Each of the unwinding mechanisms further comprises a wide-width roller parallel to the air expansion shaft, each of the wide-width rollers being located between the corresponding unwinding frame and the pressing mechanism.
6. The film coating apparatus according to claim 1, wherein The pressing mechanism comprises a pressing cylinder in transmission connection with the pressing roller to adjust the gap between the pressing roller and the third roller.
7. The film coating apparatus according to claim 1, wherein The calender mechanism comprises a calender frame, the first roller and the fifth roller being movably installed on the calender frame along the radial direction thereof.
8. The film coating apparatus according to claim 7, wherein The calender mechanism further comprises a first gap adjusting assembly in transmission connection with the first roller and a second gap adjusting assembly in transmission connection with the fifth roller, the first gap adjusting assembly being used for adjusting the gap between the first roller and the second roller, and the second gap adjusting assembly being used for adjusting the gap between the fifth roller and the fourth roller.