A hybrid light source curing device with easy-to-replace texture roll

Abstract

The utility model discloses a mixed light source curing device convenient to replace the line version roller belongs to coating equipment technical field, including UV LED light curing mechanism, mercury lamp light curing mechanism, UV LED light curing mechanism includes the line roller shaft, its one side is equipped with UV LED lamp body, UV LED lamp body emits light rays to line roller shaft one side. Mercury lamp light curing mechanism includes the machine case, be equipped with the jib in the machine case top, be connected with the unloading roll horizontal crane on the jib and slide. The machine case is equipped with cooling roller and mercury lamp body in proper order. The utility model adopts UV LED lamp body and realizes deep solidification with mercury lamp, and the deep solidification of single light source is insufficient or the heat damage defect is solved through mixed light source, sets up detachable shading component, improves the convenience of overhauling while eliminating the ultraviolet leakage risk, and the collaborative design of jib and unloading roll operation space provides special work station for heavy load line version roller replacement, and operation efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of coating equipment, specifically relating to a hybrid light source curing device that facilitates the replacement of texture rollers. Background Technology

[0002] Roll curing is a composite material surface treatment technology that combines mechanical rolling with energy curing. It is mainly used for the rapid setting and deep curing of coatings, inks, adhesives, and other materials. It applies pressure to a substrate coated with a photosensitive material using rollers, and then uses light energy to trigger the rapid curing and setting of the coating. Due to its advantages of high efficiency, environmental friendliness (no solvent evaporation), and ability to impart high-value-added surface effects to products, roll curing is increasingly widely used in coating applications in packaging printing, decorative materials, and electronic films.

[0003] However, existing roll forming and curing devices still face significant challenges. For example, Chinese utility model patent CN 203185560 U discloses a clean production coating system for anti-glare films, which uses a front pressure roller, a die roller with a concave-convex structure (i.e., a textured roller), and a rear pressure roller arranged sequentially and closely for extrusion forming. This document reveals the core structure that directly imparts texture to the film surface through the die roller. However, this patent and similar existing technologies have significant shortcomings in light source selection and roller operation: First, while using a single UV-LED light source for curing has the advantages of low energy consumption, being a cold light source that is friendly to heat-sensitive substrates, and being ready to use immediately, its light penetration depth is limited, which can easily lead to insufficient deep curing for thicker coatings or pigment-containing systems. Second, if a single mercury lamp light source is used to pursue better deep curing capabilities, it faces the problems of high energy consumption and huge heat radiation. High temperatures can easily cause the fine textures that have just been printed to undergo thermal leveling or deformation before curing, resulting in poor texture retention. In addition, mercury lamps require preheating and cooling time, which restricts the flexibility of production line start-up and shutdown and production efficiency. Third, in order to achieve high-precision and durable texture transfer, the texture roller (i.e., the mold roller) usually uses a heavy-duty steel engraved roller, which is heavy and requires additional special hoisting equipment when changing to different textures. The process is cumbersome and time-consuming, affecting the switching efficiency of multi-variety, small-batch production.

[0004] Therefore, in view of the problems existing in the prior art, there is an urgent need to provide a hybrid light source curing device that facilitates the replacement of texture rollers. Summary of the Invention

[0005] In response to the problems in related technologies, this utility model proposes a hybrid light source curing device that facilitates the replacement of texture rollers, thereby solving the technical problems of existing coating equipment having a single light source for curing and inconvenient replacement of texture rollers.

[0006] The technical solution of this utility model is achieved as follows: a hybrid light source curing device that facilitates the replacement of textured rollers, used for photocuring of roll materials, including a UV-LED photocuring mechanism and a mercury lamp photocuring mechanism arranged sequentially along the conveying direction.

[0007] The UV-LED curing mechanism includes a frame on which a textured roller is rotatably connected. Two pneumatic pressure rollers are respectively provided on the upper sides of the textured roller. A UV-LED lamp body is provided on one side of the textured roller, and the UV-LED lamp body emits light towards the side of the textured roller. It also includes a light-shielding component, which is detachably shielded around the light-emitting part of the UV-LED lamp body.

[0008] The mercury lamp curing mechanism includes a housing with a hollow inner cavity. A lifting arm is provided on the top of the housing. The lifting arm extends towards the UV-LED curing mechanism in the form of a cantilever beam. A lifting roller is slidably connected to the lifting arm for lifting the textured roller shaft. A cooling roller and a mercury lamp body are arranged sequentially inside the housing along the conveying direction of the roll material.

[0009] There is a distance between the UV-LED curing mechanism and the mercury lamp curing mechanism, forming a space for unloading the rollers.

[0010] This invention features a UV-LED curing mechanism for initial curing and a mercury lamp curing mechanism for deep curing. The hybrid light source layout addresses the shortcomings of single-light source curing or thermal damage. Furthermore, a detachable light-shielding component eliminates the risk of UV leakage, enhancing safety and ease of maintenance. The coordinated design of the boom and unloading roller operating space provides a dedicated station for replacing heavy-duty textured rollers, significantly improving operational efficiency.

[0011] As a further improvement to the above solution, the unloading roller horizontal crane includes a support frame. The upper part of the support frame is equipped with traveling wheels that reciprocate along the extension direction of the crane arm. The lower part of the support frame is equipped with a lifting assembly for lifting the disassembled textured roller. The traveling wheel sliding structure allows the unloading roller horizontal crane to move freely along the crane arm to the disassembly / removal station, quickly fulfilling the lifting requirements of the textured roller. Simultaneously, the crane arm and the photocuring mechanism are integrated into one unit, resulting in high integration and further reducing space occupation.

[0012] As a further improvement to the above solution, the lifting assembly includes a lifting motor, the output shaft of which is wound with a lifting rope, and the end of the lifting rope is equipped with a hook. The disassembled textured roller is suspended from the hook by a strap, and the lifting motor controls the winding and unwinding of the lifting rope by forward and reverse rotation, driving the textured roller to rise and fall. This mechanical structure of motor, lifting rope, and hook enables the smooth lifting and lowering of heavy-duty rollers, avoiding the risks associated with manual handling.

[0013] As a further improvement to the above solution, the lower part of the boom is fixedly connected to the top of the chassis with fasteners; the bottom of the chassis is fixedly connected to the ground with fasteners. By fixing the boom to the top of the chassis and the chassis to the ground, a stable cantilever beam structure is formed, thus mitigating the risk of overturning of the cantilever beam structure.

[0014] As a further improvement to the above solution, the light-shielding component includes a substrate and a light-shielding cover fixed thereto; the substrate is flat, and the light-shielding component is detachably connected to the frame through the substrate.

[0015] The light shield is located on the side of the substrate facing the texture roller and includes a vertical plate, an arc-shaped plate at the upper end of the vertical plate, and light-blocking plates at both ends. The UV-LED lamp body is placed on the substrate, and the vertical plate has light-passing holes for the light-emitting part of the UV-LED lamp body to emit light. The modular light shield design of the vertical plate, arc-shaped plate, and light-blocking plates achieves 360° light blockage and can be quickly disassembled and maintained.

[0016] As a further improvement to the above solution, the substrate has several fixing plates on its side, each perpendicular to the substrate; the UV-LED lamp body is snapped between the upright plate and the fixing plates; the fixing plates are horizontally screwed with hand-tightening nuts, which tighten inwards to press and secure the UV-LED lamp body. This horizontal fastening structure enables tool-free quick assembly and disassembly of the lamp body, significantly improving maintenance efficiency.

[0017] As a further improvement to the above scheme, the machine box is provided with a feed port and a discharge port at both ends along the conveying direction of the roll material, and a number of first transition rollers and second transition rollers are rotatably connected inside the machine box; the roll material is input through the feed port, passes through the first transition roller, the cooling roller, the second transition roller and the mercury lamp body in sequence, and is output from the discharge port.

[0018] As a further improvement to the above solution, the chassis is hinged with an upper inspection window and a lower inspection window at the discharge port end, with a gap between the upper and lower inspection windows to form the discharge port. The split-type inspection window provides a convenient equipment maintenance passage while ensuring the discharge function.

[0019] As a further improvement to the above solution, a cooling component is also included. The cooling component includes a cooling unit, whose cold air outlet is connected to the UV-LED curing mechanism and the mercury lamp curing mechanism respectively through cold air pipes. The zoned cooling of the cooling component specifically solves the cooling requirements of the LED area and the strong heat dissipation requirements of the mercury lamp area.

[0020] Each component is equipped with an air blower box, which has a hollow inner cavity, an air inlet at the bottom, and an air outlet on the upper side. One end of the blower is connected to a cold air duct, and the other end is connected to the air inlet, driving the cold air to be directionally sprayed out through the air blower box. The air blower box directs the air in a directional manner to ensure that the cold air covers the core heat-generating components and prevents the UV-LED lamp body and mercury lamp body from overheating.

[0021] As a further improvement to the above solution, the air outlet of the blower box is hinged with several air guide plates to adjust the airflow direction. The adjustable air guide plates enable flexible control of the airflow angle, achieving precise cooling of the heat dissipation components.

[0022] Beneficial effects:

[0023] This invention features a UV-LED curing mechanism for initial curing and a mercury lamp curing mechanism for deep curing. The hybrid light source layout addresses the shortcomings of single-light source curing or thermal damage. Furthermore, a detachable light-shielding component eliminates the risk of UV leakage, enhancing safety and ease of maintenance. The coordinated design of the boom and unloading roller operating space provides a dedicated station for replacing heavy-duty textured rollers, significantly improving operational efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a perspective view of the UV-LED light curing mechanism of this utility model;

[0026] Figure 3 This is a perspective view of the mercury lamp curing mechanism of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the unloading roller horizontal lifting device of this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the refrigeration component of this utility model;

[0029] Figure 6 This is a perspective view of the hair dryer box of this utility model;

[0030] Figure label:

[0031] J1, coil material;

[0032] 1. UV-LED curing mechanism;

[0033] 11. Frame; 12. Textured roller shaft; 13. Pneumatic pressure roller; 14. UV-LED lamp body;

[0034] 15. Light-shielding assembly; 151. Substrate; 152. Light-shielding cover; 1521. Vertical plate; 1522. Curved plate; 1523. Light-blocking plate; T1. Light-transmitting hole; 153. Fixing plate; 154. Hand-tightening nut;

[0035] 2. Mercury lamp curing mechanism;

[0036] 21. Chassis; K1. Feed inlet; K2. Discharge outlet; 211. Upper inspection window; 212. Lower inspection window;

[0037] 22. Crane boom;

[0038] 23. Horizontal lifting of unloading rollers;

[0039] 231. Frame; 232. Wheels; 233. Lifting assembly; 2331. Lifting motor; 2332. Lifting rope; 2333. Hook;

[0040] 24. Cooling roller; 25. Mercury lamp body; 26. First transition roller; 27. Second transition roller;

[0041] 3. Operating space for unloading rollers;

[0042] 4. Refrigeration components;

[0043] 41. Refrigeration unit; 411. Cold air outlet;

[0044] 42. Air conditioning ducts;

[0045] 43. Air blower box; 431. Air inlet; 432. Air outlet; 433. Air guide plate;

[0046] 44. Blower. Detailed Implementation

[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0048] In the description of this utility model, it should be understood that the term "several" means "at least one", and the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0049] Example:

[0050] like Figures 1-6As shown, this embodiment provides a hybrid light source curing device that facilitates the replacement of textured rollers, used for photocuring the roll material J1. It includes a UV-LED photocuring mechanism 1 and a mercury lamp photocuring mechanism 2 arranged sequentially along the conveying direction.

[0051] The UV-LED curing mechanism 1 includes a frame 11, on which a textured roller shaft 12 is rotatably connected. Two pneumatic pressure rollers 13 are respectively provided on the upper sides of the textured roller shaft 12. There is a gap between the textured roller shaft 12 and the two pneumatic pressure rollers 13 for the roll material J1 to pass through. A UV-LED lamp body 14 is provided on one side of the textured roller shaft 12, and the UV-LED lamp body 14 emits light towards the side of the textured roller shaft 12. It also includes a light-shielding component 15, which is detachably shielded around the light-emitting part of the UV-LED lamp body 14.

[0052] In this embodiment, the light-shielding assembly 15 includes a substrate 151 and a light-shielding cover 152 fixedly connected thereto. The substrate 151 is flat, and the light-shielding assembly 15 is detachably connected to the frame 11 via the substrate 151. The light-shielding cover 152 is located on the side of the substrate 151 facing the pattern roller and includes a vertical plate 1521, an arc-shaped plate 1522 at the upper end of the vertical plate 1521, and light-blocking plates 1523 at both ends. The UV-LED lamp body 14 is placed on the substrate 151, and the vertical plate 1521 is provided with a light-passing hole T1 for the light-emitting part of the UV-LED lamp body 14 to emit light. The modular light-shielding cover 152 design of the vertical plate 1521, the arc-shaped plate 1522, and the light-blocking plates 1523 achieves 360° light blockage and can be quickly disassembled and maintained.

[0053] In this embodiment, the substrate 151 has several fixing plates 153 on its side, each fixing plate 153 being perpendicular to the substrate 151; the UV-LED lamp body 14 is snapped between the upright plate 1521 and the fixing plates 153; the fixing plates 153 are laterally screwed with hand-tightening nuts 154, which tighten inwards to press and fix the UV-LED lamp body 14. This lateral fastening structure enables tool-free quick assembly and disassembly of the lamp body, significantly improving maintenance efficiency.

[0054] The mercury lamp curing mechanism 2 includes a housing 21 with a hollow inner cavity. A lifting arm 22 is provided on the top of the housing 21. The lifting arm 22 extends toward the UV-LED curing mechanism 1 in the form of a cantilever beam. A lifting roller 23 is slidably connected to the lifting arm 22 for lifting the textured roller shaft. A cooling roller 24 and a mercury lamp body 25 are arranged sequentially inside the housing 21 along the conveying direction of the roll material J1.

[0055] In this embodiment, the unloading roller horizontal hoist 23 includes a bracket 231. The upper part of the bracket 231 is provided with traveling wheels 232, which reciprocate along the extension direction of the lifting arm 22. The lower part of the bracket 231 is provided with a lifting assembly 233 for lifting the disassembled textured roller. The traveling wheels 232 have a sliding structure, allowing the unloading roller horizontal hoist 23 to move freely along the lifting arm 22 to the disassembly / assembly station, quickly fulfilling the lifting requirements of the textured roller. Simultaneously, the lifting arm 22 is integrally connected to the photocuring mechanism, resulting in high integration and further reducing space occupation.

[0056] In this embodiment, the lifting assembly 233 includes a lifting motor 2331, with a lifting rope 2332 wound around the output shaft of the lifting motor 2331. A hook 2333 is located at the end of the lifting rope 2332. The disassembled textured roller is suspended from the hook 2333 by straps. The lifting motor 2331 controls the winding and unwinding of the lifting rope 2332 by reversing its rotation, driving the textured roller to rise and fall. This mechanical structure of the motor, lifting rope 2332, and hook 2333 enables the smooth lifting and lowering of heavy-duty rollers, avoiding the risks associated with manual handling.

[0057] In this embodiment, the lower part of the boom 22 is fixedly connected to the top of the chassis 21 by fasteners; the bottom of the chassis 21 is fixedly connected to the ground by fasteners. By fixing the boom 22 to the top of the chassis 21 and fixing the chassis 21 to the ground, a stable cantilever beam structure is formed, thus mitigating the risk of overturning of the cantilever beam structure.

[0058] In this embodiment, the housing 21 has an inlet K1 and an outlet K2 at both ends along the conveying direction of the roll J1. Several first transition rollers 26 and second transition rollers 27 are rotatably connected inside the housing 21. The roll J1 is input through the inlet K1, passes sequentially around the first transition rollers 26, cooling rollers 24, second transition rollers 27, and the mercury lamp body 25, and is output from the outlet K2. It should be noted that the cooling roller 24 is a component in industrial equipment that achieves temperature control through internal cooling water circulation, and is widely used in calendered film, adhesive tape coating, printing machinery, and other fields. Its traditional structure uses a hollow steel roller combined with a rotary joint to form a cooling medium channel, reducing the material temperature and minimizing thermal deformation through turbulent heat exchange.

[0059] In this embodiment, the chassis 21 is hinged to an upper inspection window 211 and a lower inspection window 212 at the discharge port K2 end. There is a gap between the upper inspection window 211 and the lower inspection window 212 to form the discharge port K2. The split-type inspection window provides a convenient equipment maintenance channel while ensuring the discharge function.

[0060] There is a distance between the UV-LED curing mechanism 1 and the mercury lamp curing mechanism 2, forming a roller unloading operation space 3. Specifically, a platform is provided at the bottom of the roller unloading operation space 3. The platform is an overhead structure for the passage of the cooling air duct 42.

[0061] In this embodiment, a cooling component 4 is also included. The cooling component 4 includes a cooling unit 41, whose cold air outlet 411 is connected to the UV-LED curing mechanism 1 and the mercury lamp curing mechanism 2 respectively via a cold air pipe 42. The zoned cooling of the cooling component 4 specifically addresses the cooling requirements of the LED area and the strong heat dissipation requirements of the mercury lamp area. In this embodiment, the cooling unit 41 adopts a direct expansion cooling method.

[0062] Each component is equipped with an air blower box 43, which has a hollow inner cavity, an air inlet 431 at the lower end, and an air outlet 432 on the upper side. A blower 44 is connected at one end to a cold air duct 42 and at the other end to the air inlet 431, driving cold air to be directionally ejected through the air blower box 43. The air blower box 43 directs airflow in a directional manner, ensuring that the cold air covers the core heat-generating components and preventing overheating of the UV-LED lamp body 14 and the mercury lamp body 25. In this embodiment, several air guide plates 433 are hinged to the air outlet 432 of the air blower box 43 to adjust the airflow direction. The adjustable air guide plates 433 enable flexible control of the airflow angle, achieving precise cooling of the heat dissipation components.

[0063] In specific applications, the above-described solution of this utility model is as follows: First, the roll material J1 is conveyed to the UV-LED curing mechanism 1. Pressure is applied to the roll material J1 coated with photosensitive material by the textured roller 12, and then it is initially cured and shaped by the UV-LED lamp body 14. The UV-LED lamp body 14 emits light from the inward side and has a detachable light-shielding component 15, which eliminates the risk of ultraviolet leakage, improves safety, and enhances the convenience of inspection and maintenance.

[0064] Next, the roll material J1 is conveyed to the mercury lamp curing mechanism 2, input through the feed port K1, and passes through the first transition roller 26, cooling roller 24, second transition roller 27 and mercury lamp body 25 in sequence, and is output from the discharge port K2; the mercury lamp body 25 achieves deep curing of the roll material J1, and solves the problem of insufficient deep curing or thermal damage defects of a single light source by using a mixed light source layout.

[0065] When the textured roller shaft 12 needs to be replaced, the unloading roller horizontal hoist 23 can move freely along the lifting arm 22 to the disassembly and assembly station, quickly fulfilling the hoisting requirements of the textured roller. The lifting arm 22 is fixedly connected to the photocuring mechanism, resulting in high integration and further reducing space occupation. The coordinated design of the lifting arm 22 and the unloading roller operating space 3 provides a dedicated station for the replacement of heavy-duty textured rollers, significantly improving operating efficiency.

[0066] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A hybrid light source curing device for easy replacement of textured rollers, used for photocuring of roll materials, comprising a UV-LED photocuring mechanism and a mercury lamp photocuring mechanism arranged sequentially along the conveying direction, characterized in that: The UV-LED curing mechanism includes a frame on which a textured roller is rotatably connected. Two pneumatic pressure rollers are respectively provided on the upper sides of the textured roller. A UV-LED lamp body is provided on one side of the textured roller, and the UV-LED lamp body emits light towards the side of the textured roller. It also includes a light-shielding component, which is detachably shielded around the light-emitting part of the UV-LED lamp body. The mercury lamp curing mechanism includes a housing with a hollow inner cavity. A lifting arm is provided on the top of the housing. The lifting arm extends towards the UV-LED curing mechanism in the form of a cantilever beam. A lifting roller is slidably connected to the lifting arm for lifting the textured roller shaft. A cooling roller and a mercury lamp body are arranged sequentially inside the housing along the conveying direction of the roll material. There is a distance between the UV-LED curing mechanism and the mercury lamp curing mechanism, forming a space for unloading the rollers.

2. A hybrid light source curing device with easy-to-change texture roller according to claim 1, characterized in that, The unloading roller hoist includes a support frame, with a traveling wheel on the upper part of the support frame that reciprocates along the extension direction of the boom; and a lifting assembly on the lower part of the support frame for lifting the disassembled pattern roller.

3. A hybrid light source curing device with easy-to-change texture roller according to claim 2, characterized in that, The lifting assembly includes a lifting motor, the output shaft of which is wound with a lifting rope, and the end of the lifting rope is provided with a hook; the disassembled textured roller is suspended on the hook by a strap, and the lifting motor controls the winding and unwinding of the lifting rope by forward and reverse rotation, driving the textured roller to rise and fall.

4. The hybrid light source curing device for easy replacement of textured rollers according to claim 3, characterized in that, The lower part of the boom is fixedly connected to the top of the chassis by fasteners; the bottom of the chassis is fixedly connected to the ground by fasteners.

5. The hybrid light source curing device for easy replacement of textured rollers according to claim 1, characterized in that, The light-shielding assembly includes a substrate and a light-shielding cover fixed thereto; the substrate is flat, and the light-shielding assembly is detachably connected to the frame via the substrate. The light shield is located on the side of the substrate facing the texture roller, and includes a vertical plate, an arc-shaped plate at the upper end of the vertical plate, and light-blocking plates at both ends; the UV-LED lamp body is placed on the substrate, and the vertical plate is provided with light-transmitting holes for the light-emitting part of the UV-LED lamp body to emit light.

6. The hybrid light source curing device for easy replacement of textured rollers according to claim 5, characterized in that, The substrate has several fixing plates on its side, each of which is perpendicular to the substrate; the UV-LED lamp body is clamped between the upright plate and the fixing plate; the fixing plate is horizontally screwed with a hand-tightening nut, which is screwed inward to press and fix the UV-LED lamp body.

7. The hybrid light source curing device for easy replacement of textured rollers according to claim 1, characterized in that, The machine housing is provided with a feed inlet and a discharge outlet at both ends along the direction of the coil conveying. Several first transition rollers and second transition rollers are rotatably connected inside the machine housing. The coil is input through the feed inlet, passes through the first transition roller, the cooling roller, the second transition roller and the mercury lamp body in sequence, and is output from the discharge outlet.

8. The hybrid light source curing device for easy replacement of textured rollers according to claim 7, characterized in that, The chassis has an upper inspection window and a lower inspection window hinged at the discharge port end, and there is a gap between the upper inspection window and the lower inspection window to form the discharge port.

9. A hybrid light source curing device for easy replacement of textured rollers according to claim 1, characterized in that, It also includes a refrigeration component, which includes a refrigeration unit whose cold air outlet is connected to the UV-LED curing mechanism and the mercury lamp curing mechanism respectively through cold air pipes; Each unit is equipped with a blower box, which has a hollow inner cavity, an air inlet at the bottom, and an air outlet on the upper side. One end of the blower is connected to a cold air duct, and the other end is connected to the air inlet, driving the cold air to be sprayed out directionally through the blower box.

10. A hybrid light source curing device for easy replacement of textured rollers according to claim 9, characterized in that, The air outlet of the blower box is hinged with several air guide plates to adjust the air outlet direction.

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