An automatic detection device for cigarette tipping paper

Abstract

The present application relates to the technical field of filter paper detection equipment, and particularly relates to a cigarette filter paper automatic detection device, which comprises a detector body, movable sliding blocks are symmetrically arranged on the platforms on the two sides of a detection table of the detector body and slide, a receiving table is arranged on each sliding block, a liftable clamping block is arranged above each receiving table, a movable sliding seat is arranged between the sliding blocks, a jacking block for jacking the filter paper sample is elastically connected to the sliding seat, locking pieces for locking the position of the jacking block are symmetrically and elastically connected to the inside of the sliding seat, a matching rod is symmetrically and elastically connected to the sliding seat, a trigger rod matched with the matching rod is arranged on each sliding block, and a mounting seat for limiting the position of the filter paper sample is symmetrically arranged on the side of each sliding block away from the detection table, and a liftable limiting block is arranged on the mounting seat. Thus, the present application can effectively correct the filter paper sample with a certain bending under the premise of avoiding excessive clamping of the filter paper sample, and improve the accuracy of detection.

Description

Technical Field

[0001] This invention relates to the field of tipping paper detection equipment, and more particularly to an automatic detection device for cigarette tipping paper. Background Technology

[0002] Tipping paper is the material installed at the end of a cigarette and wraps around the filter. The dilution rate of a cigarette filter is generally controlled by the air permeability of the laser-drilled holes in the tipping paper. The air permeability of the perforated tipping paper directly affects the amount of tar in the cigarette. Therefore, it is usually necessary to test the air permeability of the tipping paper.

[0003] Currently, existing testing devices, such as Chinese Patent Publication No. CN203178165U, disclose a splicing paper air permeability tester, including a housing, a measuring fixture, a vacuum pump, a pressure regulating device, and a processing module. The front panel of the housing is equipped with a display screen, a printer, and other structures. The measuring fixture includes a frame-shaped base, a worktable surface that contacts the surface of the sample to be tested, and a pressing sealing block with a vertical through hole. The worktable surface is placed on the lower base plate of the base, and the pressing sealing block is located above the worktable surface. A cylinder is connected to the measuring fixture cylinder interface to move it downward, thereby allowing the sample to be tested to move downward. The test sample and the workbench form a sealed environment, which can automatically count and output the printed measurement results for user processing. However, the samples for splice paper testing are usually cut from a rolled paper roll. The obtained splice paper samples usually have a certain degree of curvature. It is known that the flatness of the splice paper sample will significantly affect the accuracy of air permeability testing (if the splice paper sample is bent, wrinkled or curled, it cannot fit perfectly with the sealing ring. During the test, some air will leak out directly from these gaps). If the sample is excessively clamped to compensate for the unevenness, it may cause the fragile hole edges of the splice paper with laser holes to deform or even partially collapse, thus affecting the air permeability.

[0004] How to effectively correct the bending of the spliced ​​paper sample without over-clamping it, and thus improve the accuracy of the test, has become a technical problem that needs to be solved.

[0005] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the Invention

[0006] To address the aforementioned shortcomings, the present invention aims to provide an automatic detection device for cigarette tipping paper, which can effectively correct tipping paper samples with a certain degree of curvature while avoiding excessive clamping, thereby improving the accuracy of detection.

[0007] To achieve the above objectives, the present invention provides an automatic detection device for cigarette tipping paper, comprising a detection instrument body. Movable sliding blocks are symmetrically slidably arranged on both sides of the detection platform of the detection instrument body. Each sliding block is provided with a receiving platform, and each receiving platform is provided with a liftable clamping block. A movable sliding seat is provided between the sliding blocks. A top block for lifting the tipping paper sample is elastically connected to the sliding seat. A locking element for locking the position of the top block is symmetrically elastically connected inside the sliding seat. A cooperating rod is symmetrically elastically connected to the sliding seat, and a trigger rod cooperating with the cooperating rod is provided on each sliding block.

[0008] The sliding block is symmetrically provided with mounting seats on the side away from the testing table to limit the position of the paper sample. Each mounting seat is provided with a height-adjustable limit block.

[0009] The sliding block is moved, the trigger rod pushes the cooperating rod, the top block bounces up, and the sliding seat is moved so that the top block pushes the receiving paper pattern against the curling direction of the receiving paper pattern.

[0010] According to the automatic cigarette tipping paper detection device of the present invention, the top block inside the sliding seat is connected to a fixing strip at one end away from the detection table, the sliding seat is provided with an avoidance groove that cooperates with the fixing strip, the platform is provided with a mounting plate, the mounting plate is provided with a hollow groove that cooperates with the fixing strip, and the end of the mounting plate away from the detection table is slidably provided with a liftable movable frame that cooperates with the fixing strip.

[0011] According to the automatic detection device for cigarette tipping paper of the present invention, the clamping block and the limiting block are both elastically connected to a pressure block at the end near the platform.

[0012] According to the automatic detection device for cigarette packing paper of the present invention, the top block is provided with a locking hole that cooperates with the locking member.

[0013] According to the automatic detection device for cigarette tipping paper of the present invention, one end of the top block protruding from the sliding seat is connected to the top strip, the top strip is a rod-shaped structure with a triangular cross section, and the end of the top strip near the tipping paper sample is provided with an arc surface.

[0014] According to the automatic detection device for cigarette packing paper of the present invention, both the end of the trigger rod that contacts the mating rod and the end of the mating rod that contacts the trigger rod are provided with arc surfaces.

[0015] According to the automatic cigarette tipping paper detection device of the present invention, one end of the top block near the sliding seat is inserted into the sliding seat, a positioning post is provided inside the top block, one end of the positioning post is connected to the sliding seat, a fixing piece is provided on the positioning post inside the top block, a sliding groove is provided inside the sliding seat to cooperate with the fixing piece, the fixing piece is slidably disposed in the sliding groove, and an elastic element is provided between the fixing piece and the sliding groove.

[0016] According to the automatic detection device for cigarette tipping paper of the present invention, the sliding block and the sliding seat are slidably disposed on different fixed seats, each fixed seat is provided with a slide rail, each slide rail is provided with a rotatable drive rod, one end of each sliding block and the sliding seat is threaded into the slide rail and connected to the drive rod, and each mounting seat is mounted on the fixed seat.

[0017] According to the automatic detection device for cigarette tipping paper of the present invention, each of the mounting bases is provided with a telescopic component, and the output end of each telescopic component extends out of the mounting base to connect to the limiting block.

[0018] According to the automatic detection device for cigarette tipping paper of the present invention, the mounting plate is provided with a telescopic component, and the output end of the telescopic component is connected to a movable frame.

[0019] The purpose of this invention is to provide an automatic detection device for cigarette tipping paper, including a sliding block, a sliding seat, and a mounting seat. The sliding seat drives a top bar to reciprocate between the sliding block and the mounting seat, causing the top bar to push the tipping paper sample against the curling direction, reducing the curl of the tipping paper sample. This effectively corrects tipping paper samples with a certain degree of curvature without over-clamping them, improving detection accuracy. The moving sliding block can flatten the tipping paper sample after correction. By adjusting the distance between the mounting seat and the limiting block, the limiting block continuously abuts against the tipping paper sample, allowing the tipping paper sample to be pulled between the mounting seat and the limiting block while maintaining sufficient pressure on the tipping paper sample, ensuring that the tipping paper sample continues to move in a flattened posture.

[0020] In summary, the beneficial effects of this invention are: it can effectively correct the bending of the splicing paper sample without over-clamping the sample, thereby improving the accuracy of the test. Attached Figure Description

[0021] Figure 1 This is a structural diagram of the present invention;

[0022] Figure 2 This is a structural diagram of the testing station;

[0023] Figure 3 This is a structural diagram of the mounting plate area;

[0024] Figure 4 This is a cross-sectional view of the interior of the sliding seat;

[0025] Figure 5 This is a cross-sectional view of the pressing block.

[0026] In the diagram: 1-Detector body, 11-Platform, 12-Detection table, 13-Pressure sealing block, 2-Sliding block, 21-Receiving platform, 22-Clamping block, 23-Trigger rod, 3-Sliding seat, 31-Top block, 311-Top strip, 312-Fixing strip, 32-Locking component, 33-Allowing groove, 34-Matching rod, 35-Positioning column, 351-Fixing piece, 4-Mounting seat, 41-Limiting block, 5-Fixing seat, 51-Drive rod, 52-Drive component, 6-Telescopic component, 7-Pressure block, 8-Elastic component, 9-Mounting plate, 91-Hollow slot, 92-Moving frame. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0028] In the description of this invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", 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 invention and simplifying the description, and do not indicate or imply that the device or element 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 invention.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0030] See Figures 1-4This invention provides an automatic detection device for cigarette tipping paper, including a detection instrument body 1. The structure of the detection instrument body 1 is the same as that of the prior art, including a platform 11, a detection table 12, and a liftable pressing and sealing block 13. A flat tipping paper sample is placed between the detection table 12 and the pressing and sealing block 13. The pressing and sealing block 13 is lowered to detect the air permeability of the tipping paper sample. Finally, the detection instrument body 1 outputs the detection result. This is a mature prior art, and its specific structure and working principle will not be described in detail here. Movable sliding blocks 2 are symmetrically slidably arranged on the platforms 11 on both sides of the detection table 12. Each sliding block 2 is provided with a receiving platform 21 for placing the tipping paper sample. Each receiving platform 21 is provided with a liftable clamping block 22. The clamping block 22 and the receiving platform 21 cooperate with each other to clamp the tipping paper sample. A movable sliding seat 3 is provided between the two sliding blocks 2. A top block 3 for lifting the tipping paper sample is elastically connected to the sliding seat 3. 1 (The top block 31 is inserted into the sliding seat 3 at one end. The top block 31 is provided with a positioning post 35. One end of the positioning post 35 is connected to the sliding seat 3. The positioning post 35 inside the top block 31 is provided with a fixing piece 351. The sliding seat 3 is provided with a sliding groove that cooperates with the fixing piece 351. The fixing piece 351 is slidably disposed in the sliding groove. An elastic element 8 is provided between the fixing piece 351 and the sliding groove.) The sliding seat 3 is symmetrically elastically connected with a locking element 32. The top block 31 is provided with a locking hole that cooperates with the locking element 32. When the locking element 32 and the locking hole cooperate with each other, the position of the top block 31 can be temporarily locked. The sliding seat 3 is symmetrically elastically connected with a cooperating rod 34 (the cooperating rod 34 inside the sliding seat 3 is symmetrically provided with a plug. The sliding seat 3 is provided with a slot that cooperates with the plug. The plugs are all slidably disposed in the slots. An elastic element 8 is provided between the plug and the slot). The sliding block 2 is provided with a trigger rod 23 that cooperates with the cooperating rod 34.

[0031] See Figures 1-4 The receiving paper pattern is placed on the receiving platform 21. The clamping block 22 and the receiving platform 21 cooperate to clamp one end of the receiving paper pattern. By moving the sliding block 2, the receiving paper pattern can be moved. At this time, the sliding block 2 drives the trigger rod 23 to move. When the trigger rod 23 pushes the cooperating rod 34, the cooperating rod 34 retracts and pushes the bottom end of the top block 31. The top block 31 moves upward, causing the locking member 32 to disengage from the locking hole. Under the action of the elastic member 8 at the fixing piece 351 of the top block 31, the top block 31, which is no longer restricted by the locking member 32, pops upward (the top block 31 below the locking hole is provided with clearance space, see the direction). Figure 4 That is, when the locking member 32 is disengaged from the locking hole, the locking member 32 will no longer restrict the movement of the top block 31, and under the restriction of the fixing piece 351 and the slide groove, the top block 31 will not disengage from the sliding seat 3.

[0032] See Figures 1-3Specifically, the sliding block 2 and the sliding seat 3 are slidably mounted on different fixed seats 5. Each fixed seat 5 is provided with a slide rail, and each slide rail is provided with a rotatable drive rod 51 (each fixed seat 5 is provided with a drive component 52, the output end of which is inserted into the drive rod 51 of the fixed seat 5, and the drive component 52 can drive the drive rod 51 to rotate). One end of the sliding block 2 and the sliding seat 3 are threaded into the slide rail and connected to the drive rod 51. When the drive rod 51 is rotated, due to the restriction of the slide rail, the sliding block 2 and the sliding seat 3 cannot rotate with the drive rod 51, and can only move horizontally on the fixed seat 5. In this way, power can be provided to the sliding block 2 and the sliding seat 3.

[0033] See Figures 1-5 The sliding block 2 is symmetrically provided with mounting seats 4 on the side away from the detection table 12 to limit the position of the paper sample (the mounting seats 4 are all installed on the fixed seat 5). The end of the mounting seat 4 away from the platform 11 is used to receive the paper sample (the top surface of the mounting seat 4 and the top surface of the receiving table 21 are on the same plane). Each mounting seat 4 is provided with a liftable limit block 41. The limit block 41 and the mounting seat 4 cooperate with each other to clamp the paper sample. During the process of moving the paper sample by the sliding block 2, by adjusting the distance between the mounting seat 4 and the limit block 41, the position of the paper sample can be limited to prevent the paper sample from shifting. The slack of the paper sample between the clamping block 22 and the limit block 41 can also be adjusted to prevent the paper sample from being overstretched.

[0034] See Figures 1-5 Specifically, each mounting base 4 (or sliding block 2) is equipped with a telescopic component 6 inside. The output end of the telescopic component 6 passes through the mounting base 4 (or sliding block 2) and connects to the limiting block 41 (or clamping block 22), thereby providing the limiting block 41 (or clamping block 22) with the power to lift.

[0035] See Figures 1-5 Preferably, the clamping block 22 and the limiting block 41 are elastically connected to the end of the platform 11 with a pressure block 7 (the connection method between the clamping block 22 and the pressure block 7 is the same as the connection method between the limiting block 41 and the pressure block 7. Here, the connection between the clamping block 22 and the pressure block 7 is taken as an example. One end of the pressure block 7 is inserted into the clamping block 22. The pressure block 7 inside the clamping block 22 is symmetrically provided with protrusions. The clamping block 22 is provided with grooves that cooperate with the protrusions. The protrusions are all slidably set in the grooves, and elastic elements 8 are provided between the protrusions and the grooves). Due to the function of the pressure block 7, the pressure of the clamping block 22 and the limiting block 41 on the mating paper sample can be buffered, so that the pressure controllable range is larger and the sample is avoided from being over-clamped.

[0036] See Figures 1-3The top block 31 inside the sliding seat 3 is connected to a fixing strip 312 at the end away from the detection table 12. The fixing strip 312 extends out of the sliding seat 3 at the end away from the detection table 12. The fixing strip 312 can rise and fall with the top block 31. The sliding seat 3 is provided with a clearance groove 33 to allow the fixing strip 312 to rise and fall. A mounting plate 9 is provided on the platform 11 near the mounting seat 4. Since the driving component 52 on the fixed seat 5 where the sliding seat 3 is located needs to occupy a certain space, the mounting plate 9 should be provided with clearance through holes so that the driving component 52 can be installed normally. The mounting plate 9 is provided with a cutout to allow the fixing strip 312 to rise and fall. The mounting plate 9 has a hollow slot 91. At the end of the mounting plate 9 away from the detection table 12, there is a movable frame 92 that can be raised and lowered to cooperate with the fixed strip 312. (The mounting plate 9 has a telescopic component 6, the output end of which is connected to the movable frame 92. The telescopic component 6 can drive the movable frame 92 to rise and fall.) The movable frame 92 is a hollow frame structure. During its movement, it will not collide with the driving component 52. When the fixed strip 312 is inserted into the hollow slot 91, the movable frame 92 is lowered. The movable frame 92 drives the fixed strip 312 to fall until the locking component 32 cooperates with the locking hole, which can temporarily lock the position of the top block 31.

[0037] See Figures 1-3 Preferably, the top block 31 extends out of the sliding seat 3 and is connected to the top bar 311. The top bar 311 is a rod-shaped structure with a triangular cross section, and the end of the top bar 311 near the receiving paper pattern has an arc surface, which can lift the receiving paper pattern over a larger range and facilitate reverse bending of the receiving paper pattern.

[0038] See Figures 1-5 Preferably, both the end of the trigger rod 23 that contacts the mating rod 34 and the end of the mating rod 34 that contacts the trigger rod 23 are provided with arc surfaces to reduce the friction generated during contact.

[0039] See Figures 1-5 Preferably, the elastic element 8 is a spring, which provides return power.

[0040] See Figures 1-5 Preferably, the drive component 52 is a rotary motor and the telescopic component 6 is an electric cylinder, which provides power to the device.

[0041] See Figures 1-5 When using (see initial state) Figure 2The height of all structures in this device should be reasonably set so that they can be properly installed on the platform 11 of the detector body 1. Those skilled in the art can make reasonable adjustments according to the actual situation, which will not be elaborated here. The receiving paper sample is passed through the mounting base 4, the limiting block 41 and the receiving platform 21 and the clamping block 22 in sequence (ensuring that the length of the receiving paper sample is much longer than the distance between the sliding block 2 and the mounting base 4), so that the curling direction of the receiving paper sample is facing the platform 11 (that is, the end of the receiving paper sample with the curl is facing the platform 11). The clamping block 22 and the receiving platform 21 cooperate with each other to... One end of the receiving paper sample is clamped. By moving the sliding block 2 closer to the testing table 12, the receiving paper sample is moved (at this time, there is a large distance between the mounting base 4 and the limiting block 41). As the sliding block 2 moves, the trigger rod 23 pushes the mating rod 34, which in turn pushes the top block 31 upward, causing the locking member 32 to disengage from the locking hole. The top block 31 springs upward, and the top bar 311 abuts against the receiving paper sample, causing the limiting block 41 to descend. The other side of the receiving paper sample is fixed using the limiting block 41 and the mounting base 4 (adjust the clamping force to avoid excessive stretching of the receiving paper sample), and then stops. The sliding block 2, driven by the sliding seat 3, moves the top bar 311 back and forth between the sliding block 2 and the mounting seat 4. This causes the top bar 311 to push the receiving paper pattern against the curling direction. Through this reciprocating pushing, the curling degree of the receiving paper pattern is reduced. Then, by moving the sliding seat 3, the fixing bar 312 is inserted into the hollow groove 91, and the movable frame 92 is lowered. The movable frame 92 drives the fixing bar 312 to descend until the locking member 32 and the locking hole cooperate with each other, temporarily locking the position of the top block 31 (the top bar 311 no longer abuts against the receiving paper pattern). At this time, the sliding block 2 is moved again to pull the receiving paper pattern. After leveling, adjust the distance between the mounting base 4 and the limiting block 41 so that the limiting block 41 continuously abuts against the receiving paper sample. This allows the receiving paper sample to be pulled between the mounting base 4 and the limiting block 41 while maintaining sufficient pressure between the limiting block 41 and the receiving paper sample, ensuring that the receiving paper sample continues to move in a leveled position until the receiving paper sample near the sliding block 2 moves above the detection table 12. At this point, stop the sliding block 2 and lower and tighten the sealing block 13. Use the detector body 1 to test the receiving paper sample. After the test is completed, remove the receiving paper sample and reset the device (return to the original position). Figure 2 During the initial state of the sliding block 2 and the sliding seat 3, the top block 31 will pop out again. You only need to manually press down the top block 31 or the top bar 311 until the locking part 32 and the locking hole cooperate with each other.

[0042] This invention provides an automatic cigarette tipping paper detection device, including a sliding block, a sliding seat, and a mounting seat, etc., which cooperate with each other. The sliding seat drives a top strip to reciprocate between the sliding block and the mounting seat, causing the top strip to push the tipping paper sample against the curling direction, reducing the curl of the tipping paper sample. This effectively corrects the tipping paper sample with a certain degree of curvature without over-clamping it, thus improving the accuracy of detection. After the tipping paper sample is corrected, the moving sliding block can flatten it. By adjusting the distance between the mounting seat and the limiting block, the limiting block continuously abuts against the tipping paper sample, allowing the tipping paper sample to be pulled between the mounting seat and the limiting block while maintaining sufficient pressure on the tipping paper sample, ensuring that the tipping paper sample continues to move in a flattened posture. In summary, the beneficial effects of this invention are: it can effectively correct the tipping paper sample with a certain degree of curvature without over-clamping it, thus improving the accuracy of detection.

[0043] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

Claims

1. An automatic detection device for cigarette tipping paper, characterized in that, The instrument includes a main body of a detector. On both sides of the detection platform of the main body of the detector, movable sliding blocks are symmetrically slidably arranged. Each sliding block is provided with a receiving platform. Above each receiving platform, there is a liftable clamping block. A movable sliding seat is provided between the sliding blocks. A top block for lifting and receiving paper patterns is elastically connected to the sliding seat. Locking elements for locking the position of the top block are symmetrically elastically connected inside the sliding seat. A cooperating rod is symmetrically elastically connected to the sliding seat. Each sliding block is provided with a trigger rod that cooperates with the cooperating rod. The sliding block is symmetrically provided with mounting seats on the side away from the testing table to limit the position of the paper sample. Each mounting seat is provided with a height-adjustable limit block. The sliding block is moved, the trigger rod pushes the cooperating rod, the top block bounces up, and the sliding seat is moved so that the top block pushes the receiving paper pattern against the curling direction of the receiving paper pattern.

2. The automatic detection device for cigarette tipping paper according to claim 1, characterized in that, The top block inside the sliding seat is connected to a fixing strip at the end away from the testing table. The sliding seat is provided with a clearance groove that cooperates with the fixing strip. The platform is provided with a mounting plate. The mounting plate is provided with a hollow groove that cooperates with the fixing strip. The end of the mounting plate away from the testing table is slidably provided with a liftable movable frame that cooperates with the fixing strip.

3. The automatic detection device for cigarette tipping paper according to claim 1, characterized in that, Both the clamping block and the limiting block have a pressure block elastically connected to the end near the platform.

4. The automatic detection device for cigarette tipping paper according to claim 1, characterized in that, The top block is provided with a locking hole that mates with the locking element.

5. The automatic detection device for cigarette tipping paper according to claim 1, characterized in that, The top block extends through one end of the sliding seat and is connected to the top strip. The top strip is a rod-shaped structure with a triangular cross-section, and the end of the top strip near the receiving paper pattern has an arc surface.

6. The automatic detection device for cigarette tipping paper according to claim 1, characterized in that, Both the end of the trigger rod that contacts the mating rod and the end of the mating rod that contacts the trigger rod have arc surfaces.

7. The automatic detection device for cigarette tipping paper according to claim 1, characterized in that, The top block is inserted into the sliding seat at one end. A positioning post is provided inside the top block. One end of the positioning post is connected to the sliding seat. A fixing piece is provided on the positioning post inside the top block. A sliding groove that cooperates with the fixing piece is provided inside the sliding seat. The fixing piece is slidably disposed in the sliding groove, and an elastic element is provided between the fixing piece and the sliding groove.

8. The automatic detection device for cigarette tipping paper according to claim 1, characterized in that, The sliding block and the sliding seat are slidably mounted on different fixed seats. Each fixed seat is provided with a slide rail, and each slide rail is provided with a rotatable drive rod. One end of each sliding block and the sliding seat is threaded into the slide rail and connected to the drive rod. The mounting base is mounted on the fixed seat.

9. The automatic detection device for cigarette tipping paper according to claim 1, characterized in that, Each mounting base is equipped with a telescopic component inside, and the output end of the telescopic component extends out of the mounting base to connect to the limiting block.

10. The automatic detection device for cigarette tipping paper according to claim 1, characterized in that, The mounting plate is equipped with a telescopic component, and the output end of the telescopic component is connected to the movable frame.

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