Crease-resistant device for polyurethane film

Abstract

The utility model discloses an anti-wrinkling device for a polyurethane film, which relates to the technical field of film production and comprises a mounting frame, a smoothing component, a static elimination and film surface cleaning component, a rolling component and a flattening component, four rotating rollers are rotationally connected to the inner side of the mounting frame, the horizontal height of the two rotating rollers on the front side is the same as that of the rotating roller on the last side, the third rotating roller is higher than the other three rotating rollers, and a static elimination and film surface cleaning assembly, a winding assembly and a flattening assembly are mounted on the mounting frame; the flattening assembly comprises a sliding frame, a rectangular limiting sleeve, a rectangular moving rod, a first mounting frame, a first motor, a connecting handle and an arc-shaped flattening plate, and the sliding frame is fixedly connected to the upper end of the inner side of the mounting frame. The film can be effectively smoothed to avoid damage to the film surface, and meanwhile, the winding wheel is prevented from loosening during winding.

Description

Technical Field

[0001] This utility model relates to the field of film production technology, specifically to an anti-wrinkle device for polyurethane films. Background Technology

[0002] Polyurethane film, also known as PU film or TPU film, is a polymer film made of polyurethane. PU film is an environmentally friendly material. It has excellent elasticity and high lightness. Despite its extremely thin thickness, it exhibits unparalleled waterproof properties compared to other materials. By using high-tech methods to introduce hydrophilic agents into the material, the film not only has high waterproof performance but also excellent moisture permeability.

[0003] Among the existing technologies, the anti-wrinkle device for polyurethane film with authorization announcement number CN222273639U includes a support frame, with second connecting plates symmetrically slidably connected inside the support frame, a top roller rotatably connected between the two second connecting plates, a first connecting plate fixedly connected to the bottom of the second connecting plate, and a telescopic spring symmetrically fixedly connected to the top of the first connecting plate.

[0004] In the prior art, polyurethane films are relatively thin and are easily damaged during cleaning. At the same time, static electricity is easily generated due to friction during transportation, making it easy for dust to still be attracted after cleaning. The device cannot effectively smooth the film, and the winding wheel is prone to loosening during winding. Therefore, we propose an anti-wrinkle device for polyurethane films. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a wrinkle-proof device for polyurethane film. This device can eliminate static electricity on the film and clean impurities without damaging the film surface. The device can effectively smooth the film to avoid damage to the film surface and prevent the winding wheel from loosening during winding. This can effectively solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a wrinkle-resistant device for polyurethane film, comprising an installation frame, a smoothing component, a static electricity elimination and film surface cleaning component, a winding component, and a flattening component;

[0007] Mounting frame: Four rotating rollers are rotatably connected on the inner side. The two front rotating rollers and the last rotating roller are at the same horizontal height. The third rotating roller is higher than the other three rotating rollers. The mounting frame is equipped with static elimination and film cleaning components, winding components and leveling components.

[0008] Smoothing Components: Includes a sliding frame, rectangular limiting sleeves, a rectangular moving rod, a mounting bracket, a motor, a connecting handle, and an arc-shaped smoothing plate. The sliding frame is fixedly connected to the upper inner side of the mounting frame. The sliding frame has dovetail-shaped grooves on its inner front and back. Two rectangular limiting sleeves are slidably connected to the inner side of the sliding frame. A rectangular moving rod is slidably connected to the inner side of the rectangular limiting sleeves. An arc-shaped smoothing plate is fixedly connected to the lower end of the rectangular moving rod. Mounting brackets are fixedly connected to the middle inner side of the mounting frame, corresponding to each other on the left and right sides. The inner side of mounting bracket one is rotatably connected to one end of the connecting handle. A motor is fixedly connected to the front end of mounting bracket one. The output shaft of motor one is rotatably connected to one end of the connecting handle. The other end of the connecting handle is slidably connected to the inner lower end of the rectangular moving rod. One motor drives the connecting handle to rotate around the mounting bracket. The other end of the connecting handle drives the rectangular moving rod to slide within the rectangular limiting sleeve, causing the arc-shaped smoothing plate to reciprocate laterally along the dovetail-shaped groove of the sliding frame. This applies uniform pressure to the film surface to eliminate wrinkles. Dynamic smoothing is achieved through mechanical linkage, avoiding hard friction damage to the film. Furthermore, the dovetail structure of the sliding frame and the limiting sleeve ensures a stable smoothing trajectory and improves the anti-wrinkle effect.

[0009] Furthermore, the electrostatic elimination and membrane surface cleaning assembly includes a collection tank, a filter screen, a negative pressure fan, an ion fan, a connecting pipe, and an air guide box. The collection tank is fixedly connected to the lower front of the inner side of the mounting frame, and a filter screen is snapped into the inner side of the collection tank. The negative pressure fan is fixedly connected to the right side of the mounting frame, and its inlet is connected to the collection tank via the connecting pipe. The air guide box is fixedly connected to the upper front of the inner side of the mounting frame, and the ion fan is fixedly connected to the left end of the mounting frame. The outlet of the ion fan is fixedly connected to one end of the connecting pipe, and the inlet of the air guide box is fixedly connected to the other end of the connecting pipe. The ion fan generates neutralizing ion air that eliminates static electricity on the membrane surface through the air guide box. The negative pressure fan draws airflow from the collection tank through the connecting pipe, adsorbing impurities on the membrane surface and transferring them to the collection tank. The filter screen intercepts particles. Electrostatic elimination and impurity cleaning are completed simultaneously, avoiding secondary pollution and improving membrane cleanliness.

[0010] Furthermore, the winding assembly includes a dovetail slide, a sliding plate, a bidirectional threaded rod, an insert block, and a second motor. The dovetail slide is fixedly connected to the upper rear side of the mounting frame. The sliding plate is slidably connected to the inner side of the dovetail slide, and the bidirectional threaded rod is rotatably connected to the inner side of the dovetail slide. The bidirectional threaded rod is threadedly connected to the lower end of the sliding plate. The insert block is rotatably connected to the upper end of the sliding plate. The left end of the left sliding plate is fixedly connected to the second motor, and the output shaft of the second motor is fixedly connected to one end of the insert block. Rotation of the bidirectional threaded rod causes the two sliding plates to move synchronously in opposite directions along the dovetail slide. The second motor drives the insert block to rotate the winding device, and the bidirectional threaded rod drives the insert block to restrict the winding drum.

[0011] Furthermore, the winding assembly also includes a winding drum, a ratchet, and a stop plate. A ratchet is fixedly connected to the right end of the right-side insert block, and a stop plate is rotatably connected to the upper end of the right-side sliding plate. The stop plate engages with the ratchet, and the chain segment of the winding drum is slidably connected to the insert block. The sliding connection between the insert block and the winding drum restricts the winding drum's rotation, while the engagement of the ratchet and the stop plate restricts unidirectional rotation of the winding wheel, preventing inertial unwinding. This mechanical anti-reverse structure ensures high reliability and guarantees tight winding without loosening.

[0012] Furthermore, the leveling component includes a second mounting frame, an electric telescopic rod, and a mounting plate. The second mounting frame is fixedly connected to the middle of the upper rear side of the mounting frame. The electric telescopic rod is fixedly connected to the upper end of the second mounting frame, and the mounting plate is fixedly connected to the lower end of the electric telescopic rod. The second mounting frame restricts the electric telescopic rod, which in turn moves the mounting plate. The height is electrically adjusted via the electric telescopic rod, facilitating the disassembly and installation of the winding drum.

[0013] Furthermore, the flattening assembly also includes sliding rods, connecting blocks, springs, and rotating wheels. Sliding rods are slidably connected to the four corners of the upper end of the mounting plate, and connecting blocks are fixedly connected to the lower ends of the sliding rods. Springs are sleeved between the outer side of the mounting plate and the connecting blocks of the sliding rods. Rotating wheels are rotatably connected between two corresponding left and right connecting blocks. The electric telescopic rod pushes the mounting plate downwards, causing the rotating wheels to contact the film surface. The springs provide elastic support between the mounting plate and the connecting blocks. The sliding rods and springs buffer pressure fluctuations, preventing hard contact damage to the film surface as more film accumulates on the winding drum. The rotating wheels adaptively rise and fall with changes in film thickness, maintaining uniform pressure. Elastic pressure avoids localized overpressure, improving winding flatness.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This anti-wrinkle device for polyurethane film has the following advantages:

[0015] 1. The anti-wrinkle device of this polyurethane film uses an ion fan to neutralize static electricity while a negative pressure fan adsorbs impurities on the film surface to a collection tank. The filter screen intercepts particles, achieving simultaneous cleaning without secondary pollution, ensuring the cleanliness of the film, eliminating static electricity on the film, and cleaning impurities without damaging the film surface.

[0016] 2. The anti-wrinkle device for this polyurethane film involves a motor driving a connecting handle to rotate around a mounting frame. The other end of the connecting handle drives a rectangular moving rod to slide within a rectangular limiting sleeve, causing the arc-shaped smoothing plate to reciprocate laterally along the dovetail-shaped groove of the sliding frame. This applies uniform pressure to the film surface to eliminate wrinkles. Dynamic smoothing is achieved through mechanical linkage, avoiding hard friction damage to the film. An electric telescopic rod pushes the mounting plate down, causing the rotating wheel to contact the film surface. A spring provides elastic support between the mounting plate and the connecting block. The sliding rod and spring buffer pressure fluctuations, preventing hard contact damage to the film surface as more and more film accumulates on the winding drum. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This utility model Figure 1 A magnified view of the structure at point A in the middle;

[0019] Figure 3 This utility model Figure 1 A magnified schematic diagram of the structure at point B in the middle;

[0020] Figure 4 This is a schematic diagram of the rear structure of this utility model;

[0021] Figure 5 This utility model Figure 4 A magnified schematic diagram of the structure at point C in the middle;

[0022] Figure 6 This utility model Figure 4 A magnified schematic diagram of the structure at point D in the middle.

[0023] In the diagram: 1. Mounting frame, 2. Rotating roller, 3. Smoothing assembly, 31. Sliding frame, 32. Rectangular limit sleeve, 33. Rectangular moving rod, 34. Mounting bracket one, 35. Motor one, 36. Connecting handle, 37. Arc-shaped smoothing plate, 4. Static elimination and membrane cleaning assembly, 41. Collection tank, 42. Filter screen, 43. Negative pressure fan, 44. Ion fan, 45. Connecting pipe, 46. Air guide box, 5. Rewinding assembly, 51. Dovetail slide, 52. Sliding plate, 53. Bidirectional threaded rod, 54. Sliding insert, 55. Motor two, 56. Rewinding wheel, 57. Ratchet, 58. Stop plate, 6. Smoothing assembly, 61. Mounting bracket two, 62. Electric telescopic rod, 63. Mounting plate, 64. Sliding rod, 65. Connecting block, 66. Spring, 67. Rotating wheel. Detailed Implementation

[0024] 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 some embodiments of the present utility model, and not all embodiments. 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.

[0025] Please see Figure 1-6 This embodiment provides a technical solution: a wrinkle-resistant device for polyurethane film, including an installation frame 1, a smoothing component 3, a static elimination and film surface cleaning component 4, a winding component 5, and a flattening component 6;

[0026] Mounting frame 1: Four rotating rollers 2 are rotatably connected on the inner side. The two front rotating rollers 2 and the last rotating roller 2 are at the same horizontal height. The third rotating roller 2 is higher than the other three rotating rollers 2. Static elimination and film cleaning assembly 4, winding assembly 5 and flattening assembly 6 are installed on the mounting frame 1.

[0027] Smoothing component 3 includes a sliding frame 31, a rectangular limiting sleeve 32, a rectangular moving rod 33, a mounting bracket 34, a motor 35, a connecting handle 36, and an arc-shaped smoothing plate 37. The sliding frame 31 is fixedly connected to the upper inner side of the mounting frame 1. The sliding frame 31 has dovetail-shaped grooves on the front and back of its inner side. Two rectangular limiting sleeves 32 are slidably connected to the inner side of the sliding frame 31. The rectangular moving rod 33 is slidably connected to the inner side of the rectangular limiting sleeves 32. The arc-shaped smoothing plate 37 is fixedly connected to the lower end of the rectangular moving rod 33. The mounting bracket 34 is fixedly connected to the middle inner side of the mounting frame 1 on the left and right sides respectively. The inner side of the mounting bracket 34 is rotatably connected to one end of the connecting handle 36. The front end of the mounting bracket 34 is fixedly connected to the motor 35. The output shaft of the motor 35 is rotatably connected to one end of the connecting handle 36. The other end of the connecting handle 36 is slidably connected to the inner lower end of the rectangular moving rod 33. Motor 35 drives connecting handle 36 to rotate around mounting bracket 34. The other end of connecting handle 36 drives rectangular moving rod 33 to slide within rectangular limiting sleeve 32, causing arc-shaped smoothing plate 37 to reciprocate laterally along the dovetail-shaped groove of sliding frame 31, applying uniform pressure to the film surface to eliminate wrinkles. Dynamic smoothing is achieved through mechanical linkage, avoiding hard friction damage to the film. The dovetail structure of sliding frame 31 and limiting sleeve 32 ensures stable smoothing trajectory and improves anti-wrinkle effect.

[0028] The electrostatic elimination and membrane cleaning assembly 4 includes a collection tank 41, a filter screen 42, a negative pressure fan 43, an ion fan 44, a connecting pipe 45, and an air guide box 46. The collection tank 41 is fixedly connected to the lower front side of the inner side of the mounting frame 1. The filter screen 42 is snapped into the inner side of the collection tank 41. The negative pressure fan 43 is fixedly connected to the right side of the mounting frame 1. The air inlet of the negative pressure fan 43 is connected to the collection tank 41 through the connecting pipe. The air guide box 46 is fixedly connected to the upper front side of the inner side of the mounting frame 1. The ion fan 44 is fixedly connected to the left end of the mounting frame 1. The air outlet of the ion fan 44 is fixedly connected to one end of the connecting pipe 45. The air inlet of the air guide box 46 is fixedly connected to the other end of the connecting pipe 45. Ionizing blower 44 generates neutralizing ion wind that eliminates static electricity on the membrane surface through air guide box 46. Negative pressure blower 43 draws airflow from collection tank 41 through connecting pipe 45, adsorbing impurities on the membrane surface into collection tank 41. Filter screen 42 intercepts particles. Static electricity elimination and impurity cleaning are completed simultaneously, avoiding secondary pollution and improving membrane cleanliness.

[0029] The winding assembly 5 includes a dovetail slide 51, a sliding plate 52, a bidirectional threaded rod 53, an insert block 54, and a second motor 55. The dovetail slide 51 is fixedly connected to the upper rear side of the mounting frame 1. The sliding plate 52 is slidably connected to the inner side of the dovetail slide 51. The bidirectional threaded rod 53 is rotatably connected to the inner side of the dovetail slide 51, and is threaded to the lower end of the sliding plate 52. The insert block 54 is rotatably connected to the upper end of the sliding plate 52. The second motor 55 is fixedly connected to the left end of the left sliding plate 52, and its output shaft is fixedly connected to one end of the insert block 54. When the bidirectional threaded rod 53 rotates, it causes the two sliding plates 52 to move synchronously in opposite directions along the dovetail slide 51. The second motor 55 drives the insert block 54 to rotate the winding device, and the bidirectional threaded rod drives the insert block 54 to restrict the winding drum.

[0030] The winding assembly 5 also includes a winding drum 56, a ratchet 57, and a stop plate 58. The ratchet 57 is fixedly connected to the right end of the right-side insert block 54, and the stop plate 58 is rotatably connected to the upper end of the right-side sliding plate 52. The stop plate 58 engages with the ratchet 57, and the chain segment of the winding drum 56 is slidably connected to the insert block 54. The sliding connection between the insert block 54 and the winding drum 56 restricts the winding drum 56, and the engagement of the ratchet 57 and the stop plate 58 restricts the unidirectional rotation of the winding wheel, preventing inertial unwinding. The mechanical anti-reverse structure has high reliability and ensures tight winding without loosening.

[0031] The leveling assembly 6 includes a second mounting frame 61, an electric telescopic rod 62, and a mounting plate 63. The second mounting frame 61 is fixedly connected to the middle of the upper rear side of the mounting frame 1. The electric telescopic rod 62 is fixedly connected to the upper end of the second mounting frame 61, and the mounting plate 63 is fixedly connected to the lower end of the electric telescopic rod 62. The second mounting frame 61 restricts the electric telescopic rod 62, which drives the mounting plate 63 to move. The height of the electric telescopic rod 62 is electrically adjusted, facilitating the disassembly and installation of the winding drum 56.

[0032] The leveling component 6 also includes a sliding rod 64, a connecting block 65, a spring 66, and a rotating wheel 67. The sliding rod 64 is slidably connected to the four corners of the upper end of the mounting plate 63. The connecting block 65 is fixedly connected to the lower end of the sliding rod 64. A spring 66 is sleeved between the outer side of the sliding rod 64 and the connecting block 65. A rotating wheel 67 is rotatably connected between two corresponding left and right connecting blocks 65. The electric telescopic rod 62 pushes the mounting plate 63 downwards, causing the rotating wheel 67 to contact the film surface. The spring 66 provides elastic support between the mounting plate 63 and the connecting block 65. The sliding rod 64 and the spring 66 buffer pressure fluctuations, preventing hard contact damage to the film surface as more film accumulates on the winding drum 56. The rotating wheel 67 adaptively rises and falls with changes in film thickness, maintaining uniform pressure. Elastic pressure avoids localized overpressure, improving winding flatness.

[0033] The working principle of the anti-wrinkle device for polyurethane film provided by this utility model is as follows: The film is guided and unfolded by four rotating rollers 2 inside the mounting frame 1. The motor 35 of the smoothing component 3 drives the connecting handle 36 to drive the rectangular moving rod 33 to move laterally back and forth in the dovetail-shaped slide groove of the sliding frame 31, so that the arc-shaped smoothing plate 37 dynamically smooths the film and eliminates wrinkles. Subsequently, the ion fan 44 of the static elimination and film surface cleaning component 4 blows neutralizing ions to the film surface to eliminate static electricity. The negative pressure fan 43 adsorbs impurities on the film surface into the collection tank 41 through the connecting pipe 45 and the collection tank 41. The filter screen 42 intercepts particles; the flattened film enters the winding assembly 5, the bidirectional threaded rod 53 adjusts the spacing of the sliding plate 52, the insert block 54 is inserted into the winding drum 56 to drive it to rotate, the ratchet 57 and the stop plate 58 engage to prevent loosening, the motor 2 55 drives the winding drum 56 to rotate and wind up the film; the electric telescopic rod 62 of the flattening assembly 6 pushes the mounting plate 63 down, the rotating wheel 67 elastically presses the surface of the winding film through the sliding rod 64 and the spring 66, and rises and falls adaptively as the film thickness increases, ensuring that the winding is flat and undamaged, and completing the integrated treatment of film anti-wrinkle, anti-static, cleaning and winding.

[0034] It is worth noting that, in the above embodiments, the input terminals of motor 35, negative pressure fan 43, ion fan 44, motor 55, and electric telescopic rod 62 are electrically connected to the output terminal of an external power supply through an external PLC controller. Both motor 35 and motor 55 are servo motors. The external PLC controller controls the operation of motor 35, negative pressure fan 43, ion fan 44, motor 55, and electric telescopic rod 62 using methods commonly used in the prior art.

[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An anti-wrinkle device for polyurethane films, characterized by: It includes installation frame (1), smoothing assembly (3), static elimination and film surface cleaning assembly (4), winding assembly (5) and leveling assembly (6); The installation frame (1) is rotatably connected with four rotating rollers (2) on the inner side, the front two rotating rollers (2) and the last one rotating roller (2) are at the same horizontal height, the third rotating roller (2) is higher than the other three rotating rollers (2), and the installation frame (1) is provided with static elimination and film surface cleaning assembly (4), winding assembly (5) and leveling assembly (6); The smoothing assembly (3) comprises a sliding frame (31), a rectangular limiting sleeve (32), a rectangular moving rod (33), a mounting frame (34), a motor (35), a connecting handle (36) and an arc-shaped smoothing plate (37), the inner side upper end of the installation frame (1) is fixedly connected with the sliding frame (31), the inner side of the sliding frame (31) is provided with dovetail type sliding grooves, the inner side of the sliding frame (31) is slidably connected with two rectangular limiting sleeves (32), the inner side of the rectangular limiting sleeve (32) is slidably connected with the rectangular moving rod (33), the lower end of the rectangular moving rod (33) is fixedly connected with the arc-shaped smoothing plate (37), the inner side of the mounting frame (1) is fixedly connected with the mounting frame (34) on the left and right sides of the middle part, the inner side of the mounting frame (34) is rotatably connected with one end of the connecting handle (36), the front end of the mounting frame (34) is fixedly connected with the motor (35), the output shaft of the motor (35) is rotatably connected with one end of the connecting handle (36), and the other end of the connecting handle (36) is slidably connected with the inner side of the lower end of the rectangular moving rod (33).

2. A crease prevention device for polyurethane film according to claim 1, characterized in that: The static elimination and film surface cleaning assembly (4) comprises a collection tank (41), a filter screen (42), a negative pressure fan (43), an ion fan (44), a connecting pipe (45) and an air guide box (46), the inner side lower end of the installation frame (1) is fixedly connected with the collection tank (41), the inner side of the collection tank (41) is clamped with the filter screen (42), the right side of the installation frame (1) is fixedly connected with the negative pressure fan (43), the air inlet of the negative pressure fan (43) is communicated with the collection tank (41) through the connecting pipe, the inner side of the installation frame (1) is fixedly connected with the air guide box (46) on the upper part of the front end, the left end of the installation frame (1) is fixedly connected with the ion fan (44), the air outlet of the ion fan (44) is fixedly connected with one end of the connecting pipe (45), and the air inlet of the air guide box (46) is fixedly connected with the other end of the connecting pipe (45).

3. A crease prevention device for polyurethane film according to claim 1, characterized in that: The winding assembly (5) contains dovetail slide (51), sliding plate (52), two-way threaded rod (53), plug-in block (54) and motor two (55), the rear side of the upper end of the mounting frame (1) is fixedly connected with the dovetail slide (51), the inner side of the dovetail slide (51) is slidably connected with the sliding plate (52), the inner side of the dovetail slide (51) is rotatably connected with the two-way threaded rod (53), the lower end of the sliding plate (52) is threadedly connected with the two-way threaded rod (53), the upper end of the sliding plate (52) is rotatably connected with the plug-in block (54), the left end of the left sliding plate (52) is fixedly connected with the motor two (55), and the output shaft of the motor two (55) is fixedly connected with one end of the plug-in block (54).

4. A crease prevention device for polyurethane film according to claim 3, characterized in that: The winding assembly (5) further comprises winding drum (56), ratchet (57) and stop sheet (58), the right end of the right plug-in block (54) is fixedly connected with the ratchet (57), the upper end of the right sliding plate (52) is rotatably connected with the stop sheet (58), the stop sheet (58) is clamped with the ratchet (57), and the chain segment of the winding drum (56) is slidably connected with the plug-in block (54).

5. The anti-wrinkle device for polyurethane film according to claim 1, wherein: The flattening assembly (6) contains mounting frame two (61), electric telescopic rod (62) and mounting plate (63), the rear side of the upper end of the mounting frame (1) is fixedly connected with the mounting frame two (61), the upper end of the mounting frame two (61) is fixedly connected with the electric telescopic rod (62), and the lower end of the electric telescopic rod (62) is fixedly connected with the mounting plate (63).

6. A crease prevention device for polyurethane film according to claim 5, characterized in that: The flattening assembly (6) further comprises sliding rod (64), connecting block (65), spring (66) and rotating wheel (67), the upper end of the mounting plate (63) is slidably connected with the sliding rod (64), the lower end of the sliding rod (64) is fixedly connected with the connecting block (65), the spring (66) is sleeved between the outer side of the mounting plate (63) and the connecting block (65) of the sliding rod (64), and the rotating wheel (67) is rotatably connected between the two left and right connecting blocks (65).

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