Vertical coiling machine

Abstract

The utility model discloses a vertical type material rolling machine, including feeding mechanism, paper disc mechanism, material rolling mechanism and cut-off mechanism, cut-off mechanism includes first mount, be equipped with cut-off subassembly, upper limit subassembly and lower limit subassembly on the first mount, the material belt passes between upper limit subassembly and lower limit subassembly, the upper limit subassembly is equipped with the upper limit subassembly, the lower limit subassembly is equipped with the upper limit subassembly, the lower limit subassembly is equipped with the lower limit subassembly. The upper limiting assembly and the lower limiting assembly are at least used for limiting the vertical position of the material belt. A guiding mechanism used for guiding a material belt to move to the material rolling mechanism is arranged between the cutting mechanism and the material rolling mechanism. And the material belt sequentially passes through the feeding mechanism, the cutting mechanism, the guiding mechanism and the coiling mechanism under the driving of the coiling mechanism. The upper limiting assembly and the lower limiting assembly are matched to limit the vertical position of the material belt, and the situation that the material belt is separated from the idler wheels of the conveying mechanism, and consequently the material belt cannot be accurately cut off by the material cutting mechanism is avoided. The guiding mechanism can guide the material belt so that the material belt can accurately move and be wound into the passenger material disc.

Description

Technical Field

[0001] The utility model relates to a vertical coiling machine, belonging to the technical field of coiling equipment. Background Art

[0002] During the working process of the coiling machine, the material tape needs to be wrapped between two paper strips and rolled into the customer material tray together with the paper strips. After the customer material tray is full, the material tape is cut off.

[0003] However, when the material tape enters the cutting mechanism, the material tape always breaks away from the rollers of the feeding mechanism, resulting in the cutting mechanism being unable to accurately cut off the material tape.

[0004] Meanwhile, when the material tape enters the coiling mechanism, there is a phenomenon that the material tape cannot be accurately aligned with the coiling tray, resulting in the risk of the material tape being wound outside the customer material tray. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a vertical coiling machine that can limit the conveying direction of the material tape, prevent the material tape from breaking away from the rollers of the conveying mechanism, and at the same time enable the material tape to accurately enter the coiling tray.

[0006] To achieve the aforementioned utility model purpose, the technical solutions adopted by the utility model include:

[0007] A vertical coiling machine, comprising

[0008] A feeding mechanism, which is at least used for conveying the material tape;

[0009] A paper tray mechanism, which is at least used for holding the paper strips;

[0010] A coiling mechanism, which is at least used for winding the paper strips and the material tape together;

[0011] A cutting mechanism, which cuts off the material tape at least when the coiling mechanism is full of the material tape; the cutting mechanism includes a first fixing frame, on which a cutting component, an upper limit component and a lower limit component are arranged, and the material tape passes between the upper limit component and the lower limit component, and the upper limit component and the lower limit component are at least used for limiting the up and down positions of the material tape;

[0012] A guiding mechanism for guiding the movement of the material tape to the coiling mechanism is arranged between the cutting mechanism and the coiling mechanism;

[0013] Driven by the coiling mechanism, the material tape sequentially passes through the feeding mechanism, the cutting mechanism, the guiding mechanism and the coiling mechanism.

[0014] Furthermore, the feeding mechanism includes a first connecting seat fixedly arranged on the first fixing frame. A first roller is rotatably connected to the first connecting seat, and the first roller is at least used to support the material tape.

[0015] Furthermore, a blanking detection component is arranged on the first connecting seat, and the blanking detection component is at least used to detect the tension of the material tape passing over the first roller.

[0016] Furthermore, a second roller is rotatably connected to the first connecting seat.

[0017] Furthermore, the upper limit component includes a first track cover plate and a second track cover plate, and the lower limit component includes a first track and a second track. The first track and the first track cover plate are in corresponding positions, and there is a gap for the material tape to pass between the first track cover plate and the first track; the second track and the second track cover plate are in corresponding positions, and there is a gap for the material tape to pass between the second track and the second track cover plate.

[0018] Furthermore, two sets of upper limit components and lower limit components are provided.

[0019] Furthermore, the cutting mechanism further includes a conveying component arranged on the first fixing frame. The conveying component is at least used to drive the material tape to be conveyed when the material tape is cut; a first driving component for driving whether the conveying component contacts the material tape is arranged on one side of the conveying component.

[0020] Furthermore, the conveying component includes a first rotating shaft and a second rotating shaft rotatably connected to the first fixing frame. A first conveying wheel is arranged on the first rotating shaft, and a second conveying wheel is arranged on the second rotating shaft. A second driving component for driving the first rotating shaft and the second rotating shaft to rotate is arranged on one side of the first rotating shaft and / or the second rotating shaft. Driven by the second driving component, the first conveying wheel and the second conveying wheel rotate in cooperation to drive the material tape to be conveyed; driven by the first driving component, the first conveying wheel approaches or moves away from the second conveying wheel.

[0021] Furthermore, the cutting component includes a cutting knife, and a third driving component for driving the cutting knife to move to cut the material tape is arranged on one side of the cutting knife.

[0022] Furthermore, a fourth driving component for driving the cutting component to approach or move away from the coiling mechanism is arranged on one side of the cutting component.

[0023] Furthermore, the vertical coiling machine further includes a base and a support frame. The coiling mechanism includes at least two sets of coiling components, and the coiling components are arranged on the support frame. One side of the support frame is provided with a fifth driving component for driving the support frame to move on the base. Under the drive of the fifth driving component, different coiling components correspond to the cutting component in position.

[0024] Furthermore, the guiding mechanism includes at least two guiding components, and a receiving box is arranged between two adjacent guiding components. The guiding components correspond to the coiling components one by one; under the drive of the fifth driving component, different guiding components or receiving boxes correspond to the cutting component in position.

[0025] Furthermore, the coiling component includes a customer material tray, and the customer material tray is rotatably connected to the support frame. One side of each customer material tray is provided with a sixth driving component for driving the customer material tray to rotate. Under the drive of the sixth driving component, the paper strip and the material tape are wound around the customer material tray.

[0026] Furthermore, a first placement groove for placing the material tape is arranged on the side wall of the customer material tray.

[0027] Furthermore, the paper disk mechanism includes a plurality of paper reels, and the paper reels are rotatably connected to the support frame. The paper reels correspond to the customer material trays one by one, and a second placement groove for placing the paper strips is arranged on the side wall of the paper reels.

[0028] Compared with the prior art, the advantages of the present utility model include:

[0029] 1) The vertical coiling machine provided by the present utility model can automatically drive the material tape to be conveyed, can cut the material tape according to the required length of the material tape or the required thickness of the material roll, and can wrap the material tape in the paper strip and wind the paper strip and the material tape on the coiling mechanism.

[0030] 2) For the vertical coiling machine provided by the present utility model, the upper limit component and the lower limit component cooperate to limit the up and down positions of the material tape, preventing the material tape from detaching from the rollers of the conveying mechanism and causing the cutting mechanism to be unable to accurately cut the material tape.

[0031] 3) For the vertical coiling machine provided by the present utility model, the guiding mechanism can guide the material tape so that the material tape can accurately move and be wound into the customer material tray. Description of the Drawings

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0033] Figure 1 It is a schematic diagram of the overall structure of a vertical coil feeding machine provided in a typical embodiment of the present utility model;

[0034] Figure 2 It is a schematic diagram of the structure of the feeding mechanism provided in a typical embodiment of the present utility model;

[0035] Figure 3 It is the front view of the cutting mechanism provided in a typical embodiment of the present utility model;

[0036] Figure 4 It is the rear view of the cutting mechanism provided in a typical embodiment of the present utility model;

[0037] Figure 5 It is a schematic diagram of the structure of the conveying component provided in a typical embodiment of the present utility model;

[0038] Figure 6 It is a partial schematic diagram of the upper limit component and the lower limit component provided in a typical embodiment of the present utility model;

[0039] Figure 7 It is a schematic diagram of the structure of the coil winding mechanism provided in a typical embodiment of the present utility model;

[0040] Figure 8 It is a schematic diagram of the structure of the coil winding component provided in a typical embodiment of the present utility model;

[0041] Figure 9 It is a schematic diagram of the structure of the guiding mechanism provided in a typical embodiment of the present utility model;

[0042] Explanation of reference numerals: 1, feeding mechanism; 3, coil winding mechanism; 4, cutting mechanism; 5, guiding mechanism; 6, base; 7, support frame; 11, first connecting seat; 12, first roller; 13, blanking detection component; 14, second roller; 41, first fixing frame; 42, cutting component; 43, upper limit component; 44, lower limit component; 431, first track cover plate; 432, second track cover plate; 433, first track; 434, second track; 45, conveying component; 46, first driving component; 451, first rotating shaft; 452, second rotating shaft; 453, first conveyor wheel; 454, second conveyor wheel; 455, second driving component; 421, cutter; 422, third driving component; 47, fourth driving component; 31, coil winding component; 32, fifth driving component; 51, guiding component; 52, material receiving box; 311, customer material tray; 312, sixth driving component; 21, paper roll; Detailed implementation manners

[0043] In view of the deficiencies in the prior art, the inventor of this case has proposed the technical solution of the utility model after long-term research and extensive practice. The technical solution, its implementation process and principle will be further explained as follows.

[0044] The utility model discloses a vertical coiling machine, such as Figure 1 As shown, the vertical winding machine includes a frame, on which a feeding mechanism 1, a paper tray mechanism 2, a winding mechanism 3 and a cutting mechanism 4 are arranged, the feeding mechanism 1 is at least used for conveying the material strip, specifically, the feeding mechanism 1 is used for conveying the material strip without being wrapped by a paper strip; the paper tray mechanism 2 is at least used for holding a paper strip, the paper strip is used for wrapping the material strip, during the processing of the material strip, the material strip needs to be wrapped between two paper strips and wound around the winding mechanism 3 together with the paper strip; the winding mechanism 3 is at least used for winding the paper strip and the material strip together, the winding mechanism 3 winds up the paper strip and the material strip according to certain requirements, for example, the material strip can be wound up according to a certain length or according to a certain winding thickness.

[0045] The cutting mechanism 4 cuts the material tape at least when the winding mechanism 3 is fully wound with the material tape; a guiding mechanism 5 for guiding the material tape to move to the winding mechanism 3 is arranged between the cutting mechanism 4 and the winding mechanism 3, and the guiding mechanism 5 is used to guide the material tape so that the material tape can be accurately moved and wound into the guest material tray 311, especially after the cutting mechanism 4 cuts the material tape, the guiding mechanism 5 can guide the head end of the material tape to move and be wound into the guest material tray 311.

[0046] Driven by the coiling mechanism 3 , the material strip passes through the feeding mechanism 1 , the cutting mechanism 4 , the guiding mechanism 5 and the coiling mechanism 3 in sequence.

[0047] Specifically, Figure 3 As shown, the cutting mechanism 4 includes a first fixed frame 41, on which a cutting component 42, an upper limit component 43 and a lower limit component 44 are provided, and the material belt passes between the upper limit component 43 and the lower limit component 44, and the upper limit component 43 and the lower limit component 44 are at least used to limit the upper and lower positions of the material belt.

[0048] The utility model can automatically drive the material belt to be conveyed, can cut the material belt according to the required length of the material belt or the required thickness of the material roll, and can wrap the material belt in the paper strip and wind the paper strip and the material belt on the winding mechanism 3. The upper limit component 43 and the lower limit component 44 in the utility model cooperate to limit the upper and lower positions of the material belt to prevent the material belt from escaping from the roller of the conveying mechanism, causing the cutting mechanism to fail to accurately cut the material belt. The guide mechanism 5 in the utility model can guide the material belt so that the material belt can be accurately moved and rolled into the customer material tray 311.

[0049] In some implementation cases, such asFigure 2 As shown in the figure, the feeding mechanism 1 includes a first connecting seat 11 which is fixedly arranged on the first fixing frame 41. A first roller 12 and a second roller 14 are rotatably connected to the first connecting seat 11. In this embodiment, the first roller 12 and the second roller 14 are horizontally arranged rollers. The first roller 12 is arranged above the second roller 14, and the second roller 14 is arranged below the first roller 12. The first roller 12 is used to support the tape; the second roller 14 is used to block the tape to prevent the transmitted tape from contacting the sheet metal of the frame. A blanking detection component 13 is arranged on the first connecting seat 11. The blanking detection component 13 is at least used to detect the tension of the tape passing through the first roller 12. The vertical coiling machine further includes a control mechanism. The blanking detection component 13 is electrically connected to the control mechanism. When the blanking detection component 13 detects that the tension during the tape transmission is greater than or less than the preset tension, it sends a signal to the control mechanism, and the control mechanism speeds up or slows down the tape transmission speed of the front-end equipment.

[0050] Specifically, two groups, three groups or more groups of the upper limit component 43 and the lower limit component 44 can be set. The number of groups of the upper limit component 43 and the lower limit component 44 can be selected according to the width of the tape. In this embodiment, two groups of the upper limit component 43 and the lower limit component 44 are both set. More specifically, as Figure 5 、 Figure 6 shown, the upper limit component 43 includes a first track cover plate 431 and a second track cover plate 432, and the lower limit component 44 includes a first track 433 and a second track 434. The first track 433 and the first track cover plate 431 are in corresponding positions and there is a gap for the tape to pass through between the first track cover plate 431 and the first track 433; the second track 434 and the second track cover plate 432 are in corresponding positions and there is a gap for the tape to pass through between the second track 434 and the second track cover plate 432. The cutting mechanism 4 further includes a conveying component 45 which is arranged between the first track 433 and the track.

[0051] More specifically, as Figure 5 、 Figure 6As shown, the conveying assembly 45 includes a first rotating shaft 451 and a second rotating shaft 452 rotatably connected to the first fixing frame 41. A first conveyor wheel 453 is sleeved on the outer surface of the first rotating shaft 451, and a second conveyor wheel 454 is sleeved on the outer surface of the second rotating shaft 452. Of course, the rotating directions of the first conveyor wheel 453 and the second conveyor wheel 454 are opposite. Under the cooperation of the first conveyor wheel 453 and the second conveyor wheel 454, the tape moves in the direction close to the cutting assembly 42. On one side of the first rotating shaft and / or the second rotating shaft, there is a second driving assembly 455 for driving the first rotating shaft 451 and the second rotating shaft 452 to rotate. Driven by the second driving assembly 455, the first conveyor wheel 453 and the second conveyor wheel 454 rotate in cooperation to drive the tape for conveying; the second driving assembly 455 may include a first cylinder or a first motor for driving the first rotating shaft 451 to rotate and a second cylinder or a second motor for driving the second rotating shaft 452 to rotate, or a single power mechanism may be used to drive the first conveyor wheel 453 and the second conveyor wheel 454 to rotate.

[0052] More specifically, the second driving assembly 455 in this embodiment includes a first gear sleeved on the outer surface of the first rotating shaft 451 and a second gear sleeved on the outer surface of the second rotating shaft 452. When the tape needs to be conveyed, the first gear and the second gear are engaged. On one side of the first rotating shaft 451, there is a servo motor for driving the first rotating shaft 451 to rotate. Further, on one side of the conveying assembly 45, there is a first driving assembly 46 for driving whether the conveying assembly 45 contacts the tape. The first driving assembly 46 may be a motor and a lead screw or a cylinder. In this embodiment, the first driving assembly 46 includes a cylinder; more specifically, a rotating plate is provided on the first fixing frame 41, the first rotating shaft 451 is rotatably connected to the rotating plate, the rotating plate is fixedly arranged on the driving shaft of the cylinder, and the fixed end of the cylinder is fixed on the first fixing plate. When the tape is cut but not wound onto the coiling mechanism 3 and needs to be conveyed, the cylinder drives the rotating plate to move downward until the first conveyor wheel and the second conveyor wheel reach a position where they can drive the tape for conveying. The servo motor drives the first rotating shaft 451 to rotate. Under the connection of the first gear and the second gear and the connection of the first rotating shaft 451 and the second rotating shaft 452, the first conveyor wheel 453 and the second conveyor wheel 454 rotate relatively to drive the tape for conveying.

[0053] In some embodiments, such as Figure 4As shown, the cutting component 42 includes a cutter 421. On one side of the cutter 421, there is a third driving component 422 for driving the cutter 421 to move to cut the strip. The third driving component 422 can be a motor and a lead screw or a cylinder. In this embodiment, the third driving component 422 includes a cylinder, and the cutter 421 is fixedly connected to the driving shaft of the cylinder.

[0054] In some embodiments, the vertical coiling machine further includes a base 6 and a support frame 7. As Figure 7 shown, the coiling mechanism 3 includes at least two coiling components 31. The coiling components 31 are arranged on the support frame 7. On one side of the support frame 7, there is a fifth driving component 32 for driving the support frame 7 to move on the base 6. Under the drive of the fifth driving component 32, different coiling components 31 correspond to the cutting component 42 in position. On one side of the cutting component 42, there is a fourth driving component 47 for driving the cutting component 42 to approach or move away from the coiling mechanism 3. The fourth driving component 47 can be a motor and a lead screw or a cylinder. In this embodiment, the fourth driving component 47 includes a cylinder. The fourth driving component 47 is used to drive the cutting component 42 to approach or move away from the coiling mechanism 3. When a coiling component 31 is full of material and needs to be cut, the cutting mechanism 4 first cuts the strip, and the coiling mechanism 3 winds the strip around the customer material tray 311; the fifth driving component 32 drives the support frame 7 to move, so that the adjacent receiving box 52 corresponds to the cutting component 42 in position. The fourth driving component 47 drives the cutting component 42 to move in the direction close to the receiving box 52, and the cutting component 42 cuts one end of the strip so that the strip falls into the receiving box 52 as a sample.

[0055] In some embodiments, as Figure 9 shown, the guiding mechanism 5 includes at least two guiding components 51. A receiving box 52 is arranged between two adjacent guiding components 51. The guiding components 51 correspond to the coiling components 31 one by one; under the drive of the fifth driving component 32, different guiding components 51 or receiving boxes 52 correspond to the cutting component 42 in position. The coiling component 31 includes a customer material tray 311. The customer material tray 311 is rotatably connected to the support frame 7. On one side of each customer material tray 311, there is a sixth driving component 312 for driving the customer material tray 311 to rotate. Under the drive of the sixth driving component 312, the paper strip and the strip are wound around the customer material tray 311; a first placing groove for holding the strip is arranged on the side wall of the customer material tray 311. The guiding component 51 can guide the strip to accurately move to the customer material tray 311 and be wound into the first placing groove on the side wall of the customer material tray 311.

[0056] In some embodiments, as Figure 8As shown, the paper tray mechanism 2 includes a plurality of paper reels 21, the paper reels 21 are rotatably connected to the support frame 7, the paper reels 21 correspond to the customer material trays 311 one by one, and a second placement groove for holding paper strips is provided on the side wall of the paper reel 21.

[0057] It should be understood that the above embodiments are only used to illustrate the technical concept and features of the present invention, and its purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A vertical coiling machine, characterized in that: include A feeding mechanism (1), the feeding mechanism (1) being used at least to convey a material belt; A paper tray mechanism (2), the paper tray mechanism (2) being at least used for holding paper strips; A material winding mechanism (3), the material winding mechanism (3) being used at least to wind the paper strip and the material tape together; A cutting mechanism (4), the cutting mechanism (4) cuts off the material strip at least when the winding mechanism (3) is fully wound with the material strip; the cutting mechanism (4) comprises a first fixed frame (41), the first fixed frame (41) is provided with a cutting component (42), an upper limit component (43) and a lower limit component (44), the material strip passes between the upper limit component (43) and the lower limit component (44), and the upper limit component (43) and the lower limit component (44) are at least used to limit the upper and lower positions of the material strip; A guiding mechanism (5) for guiding the material strip to move onto the material coiling mechanism (3) is provided between the cutting mechanism (4) and the material coiling mechanism (3); Driven by the coiling mechanism (3), the material strip passes through the feeding mechanism (1), the cutting mechanism (4), the guiding mechanism (5) and the coiling mechanism (3) in sequence.

2. A vertical coiling machine according to claim 1, characterized in that: The feeding mechanism (1) comprises a first connecting seat (11), the first connecting seat (11) is fixedly arranged on a first fixing frame (41), a first roller (12) is rotatably connected to the first connecting seat (11), and the first roller (12) is at least used for supporting the material strip; And / or, a material drop detection component (13) is provided on the first connecting seat (11), and the material drop detection component (13) is at least used to detect the tension of the material strip passing through the first roller (12); And / or, a second roller (14) is rotatably connected to the first connecting seat (11).

3. A vertical coiling machine according to claim 1, characterized in that: The upper limit assembly (43) comprises a first track cover plate (431) and a second track cover plate (432); the lower limit assembly (44) comprises a first track (433) and a second track (434); the first track (433) and the first track cover plate (431) correspond in position, and there is a gap between the first track cover plate (431) and the first track (433) for the feed belt to pass through; the second track (434) and the second track cover plate (432) correspond in position, and there is a gap between the second track (434) and the second track cover plate (432) for the feed belt to pass through; And / or, the upper limit assembly (43) and the lower limit assembly (44) are each provided with two groups.

4. The vertical coiling machine according to claim 1, characterized in that: The cutting mechanism (4) further comprises a transmission component (45), wherein the transmission component (45) is arranged on the first fixed frame (41), and the transmission component (45) is at least used for driving the material belt to be transmitted when the material belt is cut; and a first driving component (46) is arranged on one side of the transmission component (45) for driving the transmission component (45) to contact the material belt.

5. A vertical coiling machine according to claim 4, characterized in that: The transmission component (45) comprises a first rotating shaft (451) and a second rotating shaft (452) which are rotatably connected to the first fixed frame (41); a first transmission wheel (453) is arranged on the first rotating shaft (451); a second transmission wheel (454) is arranged on the second rotating shaft (452); a second driving component (455) for driving the first rotating shaft (451) and the second rotating shaft (452) to rotate is arranged on one side of the first rotating shaft and / or the second rotating shaft; under the drive of the second driving component (455), the first transmission wheel (453) and the second transmission wheel (454) rotate in coordination to drive the material belt to be transmitted; under the drive of the first driving component (46), the first transmission wheel (453) approaches or moves away from the second transmission wheel (454).

6. A vertical coiling machine according to claim 1, characterized in that: The cutting component (42) comprises a cutter (421), and a third driving component (422) for driving the cutter (421) to move so as to cut the material strip is provided on one side of the cutter (421); And / or, a fourth driving component (47) for driving the cutting component (42) to move closer to or away from the coiling mechanism (3) is provided on one side of the cutting component (42).

7. The vertical coiling machine according to claim 1, characterized in that: The vertical coiling machine also includes a base (6) and a support frame (7), the coiling mechanism (3) includes at least two groups of coiling assemblies (31), the coiling assemblies (31) are arranged on the support frame (7), and a fifth driving assembly (32) for driving the support frame (7) to move on the base (6) is arranged on one side of the support frame (7), and under the drive of the fifth driving assembly (32), different coiling assemblies (31) correspond to the positions of the cutting assemblies (42).

8. A vertical coiling machine according to claim 7, characterized in that: The guiding mechanism (5) comprises at least two guiding assemblies (51), a material receiving box (52) is arranged between two adjacent guiding assemblies (51), and the guiding assemblies (51) correspond to the coiling assemblies (31) one by one; under the drive of the fifth driving assembly (32), different guiding assemblies (51) or material receiving boxes (52) correspond to the positions of the cutting assemblies (42).

9. A vertical coiling machine according to claim 8, characterized in that: The coiling assembly (31) comprises a guest material tray (311), the guest material tray (311) being rotatably connected to a support frame (7), and a sixth driving assembly (312) for driving the guest material tray (311) to rotate is arranged on one side of each guest material tray (311), and the paper strip and the material belt are wound around the guest material tray (311) under the drive of the sixth driving assembly (312); And / or, a first placement groove for holding the material strip is provided on the side wall of the customer material tray (311).

10. A vertical coiling machine according to claim 9, characterized in that: The paper tray mechanism (2) comprises a plurality of paper reels (21), the paper reels (21) being rotatably connected to a support frame (7), the paper reels (21) corresponding one to one with a customer material tray (311), and a second placement groove for holding paper strips being provided on a side wall of the paper reels (21).

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