Stick discharging mechanism

Abstract

The utility model discloses a stick discharging mechanism which comprises a machine frame, a stick discharging mechanism, a stick discharging mechanism, a stick discharging mechanism and a stick discharging mechanism, and the machine frame is provided with a stick storage cavity which is internally provided with a pushing structure; a horizontal channel; a vertical channel; the stick clamping assembly is arranged at the feeding end of the vertical channel and comprises a pressing rod acting on the bottom side of the stick and a pressing strip acting on the top side of the stick; the pressing rod and the pressing strip are arranged on the rack in a swinging mode, and the rod located at the feeding end of the vertical channel can swing downwards relative to the horizontal channel and stretch out of the discharging end of the vertical channel. The stick bodies of the sticks to be clamped are exposed out of the stick storage cavity through the material pushing structure and the stick clamping assembly, then the clamping part of the mechanical arm can be conveniently applied, the situation that the mechanical arm grabs empty is reduced, the stick taking requirement of the automatic mechanical arm is met, and continuous development of the cotton candy machine towards the automation direction is promoted.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment, and particularly relates to a stick discharging mechanism. Background Art

[0002] With the continuous development of the cotton candy machine towards automation, there are more and more requirements for the stick discharging method of cotton candy sticks.

[0003] In the prior art, a mechanical arm is used to replace manual stick taking. The clamping part of the mechanical arm takes out the stick located in the stick storage cavity. This stick discharging method has the following disadvantages: the clamping part of the mechanical arm is difficult to operate in the stick storage cavity, which easily leads to the situation where the stick cannot be taken out normally. Summary of the Utility Model

[0004] In order to overcome the disadvantages and deficiencies existing in the prior art, the purpose of the utility model is to provide a stick discharging mechanism.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A stick discharging mechanism includes:

[0007] A frame, which is provided with a stick storage cavity, and a material pushing structure is arranged in the stick storage cavity;

[0008] A horizontal channel is arranged at the discharging end of the stick storage cavity, and the material pushing structure can act on the stick in the horizontal direction to push the stick located in the stick storage cavity into the horizontal channel;

[0009] A vertical channel is arranged at the discharging end of the horizontal channel and is communicated with the stick storage cavity through the horizontal channel;

[0010] A stick clamping assembly is arranged at the feeding end of the vertical channel, and includes a pressing rod acting on the bottom side of the stick and a pressing strip acting on the top side of the stick. The pressing rod and the pressing strip are respectively swingably arranged on the frame and can swing the stick located at the feeding end of the vertical channel downward relative to the horizontal channel and extend out of the discharging end of the vertical channel.

[0011] Preferably, it further includes:

[0012] An assembly plate is arranged at the discharging end of the horizontal channel, and forms the vertical channel with the frame, and can limit the stick from continuing to move in the horizontal direction.

[0013] Preferably, it further includes:

[0014] A first swing shaft, and the pressing rod is swingably connected to the assembly plate through the first swing shaft;

[0015] A limiting structure, disposed on the assembly plate, capable of making the top side surface of the pressure rod flush with the bottom surface of the horizontal channel;

[0016] An elastic component, acting on the pressure rod, can continuously provide the pressure rod with an elastic force to swing upward and maintain resistance to the limiting structure;

[0017] a second swing shaft, the pressure strip being swingably connected to the assembly plate via the second swing shaft;

[0018] The first drive is arranged on the assembly plate, and the output shaft is drivingly connected with the second swing shaft, and can control the pressure bar to swing upward or downward.

[0019] Preferably, it also includes:

[0020] A guide screw is arranged on a side of the pressure rod close to the assembly plate;

[0021] A guide arc groove is opened on the assembly plate, the limiting structure is arranged on the outer side of the assembly plate and located at the top of the guide arc groove, and the free end of the guide screw passes through the guide arc groove and is exposed on the outer side of the assembly plate; when the top side surface of the pressure rod is flush with the bottom surface of the horizontal channel, the guide screw and the limiting structure are abutted.

[0022] Preferably, it also includes:

[0023] An upper limit switch is arranged on the assembly plate;

[0024] A lower limit switch, disposed on the assembly and located at the bottom end of the guide arc groove;

[0025] An information processing component is arranged on the frame, the upper limit switch and the lower limit switch are respectively connected to the information processing component by electrical signals, and the first drive is electrically connected to an external power supply through the information processing component; the first drive controls the pressure bar to swing downward to act on the stick located on the pressure rod until the bottom side of the pressure rod triggers the lower limit switch; the first drive controls the pressure bar to swing upward and reset until the pressure bar triggers the upper limit switch.

[0026] Preferably, it also includes:

[0027] The electromagnetic lock is arranged on the front side of the assembly plate, and the locking end is located at the bottom end of the guide arc groove, which can act on the guide screw and limit the pressure rod from swinging upward; the electromagnetic lock is electrically connected to an external power supply through the information processing component.

[0028] Preferably, it also includes:

[0029] The first light sensor is arranged on the inner side of the assembly plate and is located directly above the pressure rod. The pressure rod is provided with a through hole for light to pass through and is electrically connected to the information processing component. When the stick is located on the top side of the pressure rod and the through hole is blocked, the first light sensor transmits an electrical signal to the information processing component, and the information processing component transmits a working signal to the first drive to control the pressure bar to swing downward.

[0030] Preferably, it also includes:

[0031] The second optical sensor is arranged on the front side of the assembly plate and at one end away from the second swing axis, and is used to detect whether there is a stick downward and extending out of the vertical channel; the second optical sensor is connected to the information processing component by electrical signals.

[0032] Preferably, the pushing structure comprises:

[0033] A conveyor belt, the bottom wall of the stick storage cavity is provided with a strip-shaped through hole for avoiding the conveyor belt, and the conveying surface of the conveyor belt extends into the stick storage cavity through the strip-shaped through hole and acts on the stick;

[0034] The second drive is arranged on the frame, and the output end is drivingly connected to the conveyor belt and is electrically connected to an external power source through the information processing component.

[0035] Preferably, it also includes:

[0036] The one-way resisting structure is arranged on the assembly plate and is located at one end away from the second swing axis, and can allow the stick that swings downward to pass through, and can provide resisting force when the stick swings upward.

[0037] The stick discharging steps of the utility model are as follows: the pushing structure acts on the stick in the horizontal direction, the stick passes through the horizontal channel and is located at the feeding end of the vertical channel, the pressure rod acts on the bottom side of the stick, and the pressure strip acts on the top side of the stick to clamp the stick, and then the pressure rod and the pressure strip drive the stick to swing downward along the vertical channel in a state of clamping the stick, until the stick body is exposed outside the vertical channel, thereby facilitating the external manipulator to clamp the stick.

[0038] Compared with the prior art, the beneficial effect of the utility model lies in: utilizing the pushing structure and the clamping stick assembly to expose the stick body to be clamped outside the stick storage cavity, thereby facilitating the use of the clamping part of the manipulator, which is beneficial to reducing the situation where the manipulator grabs nothing, meeting the needs of the automated manipulator to take sticks, and promoting the continuous development of cotton candy machines towards automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0040] Figure 2 Schematic longitudinal sectional view of an embodiment in the present utility model;

[0041] Figure 3 Schematic view of the lower swing of the stick in an embodiment of the present utility model.

[0042] As shown in the figure:

[0043] 1 - Frame, 11 - Stick storage cavity, 12 - Horizontal channel, 13 - Vertical channel, 14 - Assembly plate, 141 - Limiting structure, 142 - First drive, 143 - Guide arc groove, 144 - Upper limit switch, 145 - Lower limit switch, 146 - One - way resistance structure, 15 - Horizontal top plate, 16 - Electromagnetic lock, 17 - First light sensor, 18 - Second light sensor, 19 - Strip - shaped through - hole;

[0044] 2 - Pushing structure, 21 - Conveyor belt, 22 - Second drive;

[0045] 3 - Stick clamping assembly, 31 - Pressing rod, 311 - Guide screw, 32 - Pressing strip;

[0046] 4 - Stick. Specific embodiments

[0047] The following combines the drawings to specifically illustrate the implementation manners of the present utility model. The drawings are only for reference and illustration, and do not constitute a limitation on the scope of patent protection of the present utility model.

[0048] Please refer to Figures 1-3 , in this embodiment, a stick - discharging mechanism includes:

[0049] Frame 1, provided with a stick storage cavity 11, and a pushing structure 2 is arranged in the stick storage cavity 11;

[0050] Horizontal channel 12, arranged at the discharging end of the stick storage cavity 11, and the pushing structure 2 can act on the stick 4 in the horizontal direction to push the stick 4 located in the stick storage cavity 11 into the horizontal channel 12;

[0051] Vertical channel 13, arranged at the discharging end of the horizontal channel 12, and is communicated with the stick storage cavity 11 through the horizontal channel 12;

[0052] Stick clamping assembly 3, arranged at the feeding end of the vertical channel 13, includes a pressing rod 31 acting on the bottom side of the stick 4 and a pressing strip 32 acting on the top side of the stick 4. The pressing rod 31 and the pressing strip 32 are respectively swingably arranged on the frame 1 and can swing the stick 4 located at the feeding end of the vertical channel 13 downward relative to the horizontal channel 12 and extend out of the discharging end of the vertical channel 13.

[0053] Preferably, it further includes:

[0054] The assembly plate 14 is disposed at the discharge end of the horizontal channel 12 and forms the vertical channel 13 with the frame 1, so as to limit the stick 4 from continuing to move in the horizontal direction.

[0055] In this embodiment, it also includes a horizontal top plate 15, which is arranged on the frame 1 and forms a horizontal channel 12 with the top surface of the frame 1, which can limit the movement of the stick plate in the vertical direction. The horizontal top plate 15 is provided with a avoidance gap on the side close to the assembly plate 14 for avoiding the pressure strip 32 from swinging up and down; specifically, by setting the distance from the horizontal top plate 15 to the top surface of the frame 1 to match the diameter of the stick 4, it is ensured that only a single stick 4 is output during the pushing process. Similarly, by setting the distance between the assembly plate 14 and the front side of the frame 1 to match the diameter of the stick 4, it is ensured that when swinging downward, the stick 4 slides out along the front and rear sides of the clamping assembly; the vertical channel 13 is relatively perpendicular to the horizontal channel 12 to form a right-angle stick outlet channel, which is used to transfer the stick 4 located in the plane to the vertical plane, thereby facilitating the clamping of the robot.

[0056] Preferably, it also includes:

[0057] A first swing shaft, through which the pressure rod 31 is swingably connected to the assembly plate 14;

[0058] A limiting structure 141 is provided on the assembly plate 14 and can make the top side surface of the pressing rod 31 flush with the bottom surface of the horizontal channel 12;

[0059] An elastic component (not shown in the figure), acting on the pressure rod 31, can provide the pressure rod 31 with an elastic force to continuously swing upward and maintain resistance to the limiting structure 141;

[0060] A second swing shaft, through which the pressure strip 32 is swingably connected to the assembly plate 14;

[0061] The first drive 142 is disposed on the assembly plate 14 , and the output shaft is drivingly connected with the second swing shaft, so as to control the pressure bar 32 to swing upward or downward.

[0062] In this embodiment, the elastic component (not shown in the figure) is a torsion spring mounted on the first swing axis. When the pressure rod 31 swings downward, the torsion spring is deformed and stores elastic force for resetting the pressure rod 31. On the other hand, when the torsion spring is deformed, an upward elastic force is provided to the stick 4 on the pressure rod 31. At the same time, the first drive 142 is used to control the pressure bar 32 to swing downward and provide downward pressure to the stick 4 on the pressure rod 31, so as to achieve the effect of clamping the stick 4. Furthermore, the limiting structure 141 is used to limit the maximum angle of the pressure rod 31 to swing upward and reset, so as to avoid the top surface of the pressure rod 31 being higher than the bottom wall of the horizontal channel 12, thereby reducing blockage.

[0063] Preferably, it further includes:

[0064] A guiding screw 311, disposed on one side of the pressing rod 31 close to the assembling plate 14;

[0065] A guiding arc groove 143 is formed on the assembling plate 14. The limiting structure 141 is disposed outside the assembling plate 14 and at the top end of the guiding arc groove 143. The free end of the guiding screw 311 passes through the guiding arc groove 143 and is exposed outside the assembling plate 14. When the top side of the pressing rod 31 is flush with the bottom surface of the horizontal channel 12, the guiding screw 311 abuts against the limiting structure 141.

[0066] In this embodiment, the guiding screw 311 is fixed to the outer part of the pressing rod 31, which is used to guide the up-and-down swinging movement of the pressing rod 31, reduce the position error of the stick 4 swinging out of the vertical channel 13, and is beneficial for the manipulator to perform precise clamping. The limiting structure 141 is a block disposed on the assembling plate 14. A waist-shaped adjusting hole is formed on the block, and the adjustment is realized by tightening and loosening screws. The waist-shaped adjusting hole is in the vertical direction, which can finely adjust the interval between the block and the top end of the guiding arc groove 143, and further adjust the maximum upward swinging amplitude when the pressing rod 31 resets, which is beneficial to meet more usage requirements.

[0067] Preferably, it further includes:

[0068] An upper limit switch 144, disposed on the assembling plate 14;

[0069] A lower limit switch 145, disposed on the assembling plate and at the bottom end of the guiding arc groove 143;

[0070] An information processing component (not shown in the figure) is disposed on the frame 1. The upper limit switch 144 and the lower limit switch 145 are respectively electrically connected to the information processing component (not shown in the figure). The first driver 142 is electrically connected to an external power supply through the information processing component (not shown in the figure). The first driver 142 controls the pressing strip 32 to swing downward and act on the stick 4 located on the pressing rod 31 until the bottom side of the pressing rod 31 triggers the lower limit switch 145. The first driver 142 controls the pressing strip 32 to swing upward and reset until the pressing strip 32 triggers the upper limit switch 144.

[0071] In this embodiment, using the upper limit switch 144 and the lower limit switch 145 to control the start and stop of the pressing strip 32 is beneficial for performing continuous stick discharging actions.

[0072] Preferably, it further includes:

[0073] The electromagnetic lock 16 is provided on the front side of the assembly plate 14, and the locking end is located at the bottom end of the guiding arc groove 143, capable of acting on the guiding screw 311 and restricting the upward swing of the pressing rod 31; the electromagnetic lock 16 is electrically connected to an external power supply through the information processing component (not shown in the figure).

[0074] In this embodiment, the electromagnetic lock 16 acts on the guiding screw 311, so as to be able to control the pressing strip 32 and the pressing rod 31 to reset successively, avoiding interference when they reset. On the other hand, before the mechanical arm takes away the stick 4, a certain positioning effect can be provided to maintain the current inclination angle of the stick 4.

[0075] Preferably, it further includes:

[0076] The first light sensor 17 is provided inside the assembly plate 14, directly above the pressing rod 31. The pressing rod 31 is provided with a through hole for light to pass through and is electrically connected to the information processing component (not shown in the figure); when the stick 4 is located on the top side of the pressing rod 31, the through hole is blocked, and the first light sensor 17 conveys an electrical signal to the information processing component (not shown in the figure), and the information processing component (not shown in the figure) transmits a working signal to the first driver 142 to control the downward swing of the pressing strip 32.

[0077] In this embodiment, the first light sensor 17 is used to monitor whether the stick 4 is pushed in place and to control the start and stop of the first driver 142 and the second driver 22.

[0078] Preferably, it further includes:

[0079] The second light sensor 18 is provided on the front side of the assembly plate 14 and at one end away from the second swing shaft, for detecting whether there is a stick 4 moving downward and extending out of the vertical channel 13; the second light sensor 18 is electrically connected to the information processing component (not shown in the figure).

[0080] In this embodiment, the second light sensor 18 is used to monitor whether the stick 4 has swung downward, for notifying the mechanical arm for taking the stick to prepare for the clamping work; further, an alarm device is also provided. The alarm device and the mechanical arm are respectively electrically connected to the information processing component (not shown in the figure). By presetting the material taking time, when there is no stick 4 swinging downward through the vertical channel 13 within the aforementioned material taking time, the alarm device issues an alarm to provide the user with the fault information that the stick 4 needs to be replenished or there is a blockage.

[0081] Preferably, the pushing structure 2 includes:

[0082] The conveyor belt 21, the bottom wall of the stick storage chamber 11 is provided with a strip through hole 19 for avoiding the conveyor belt 21, the conveying surface of the conveyor belt 21 extends into the stick storage chamber 11 through the strip through hole 19 and acts on the stick 4;

[0083] The second drive 22 is disposed on the frame 1, and an output end thereof is drivingly connected to the conveyor belt 21, and is electrically connected to an external power source through the information processing component (not shown in the figure).

[0084] In this embodiment, three conveyor belts 21 are provided, and the three conveyor belts 21 are arranged side by side along the width direction of the stick storage chamber 11 (the length direction of the stick 4). The second drive 22 includes a motor, a driving shaft and a driven shaft. The driving shaft and the driven shaft are rotatably arranged at the bottom of the frame 1 through bearing seats respectively. Three driving wheels are coaxially sleeved on the driving shaft, and three driven wheels are sleeved on the driven shaft. One end of the conveyor belt 21 is connected to the driving wheel, and the other end is connected to the driven wheel to realize the output of the stick 4.

[0085] Preferably, it also includes:

[0086] The one-way resisting structure 146 is disposed on the assembly plate 14 and is located at one end away from the second swing axis, and can allow the stick 4 that swings downward to pass through, and can provide resisting force when the stick 4 swings upward.

[0087] In this embodiment, the one-way resisting structure 146 is L-shaped, including a connected horizontal section and a vertical section. The horizontal section is hinged to the mounting plate 14. When the stick 4 swings downward, it abuts against the top side of the horizontal section and makes the vertical section swing outward relative to the mounting plate 14 to achieve normal stick ejection. When the stick plate swings upward, it abuts against the bottom side of the horizontal section and makes the vertical section swing inward relative to the mounting plate 14. When the vertical section swings inward, it abuts against the mounting plate 14 to achieve the purpose of one-way stick ejection.

[0088] The working steps of this embodiment are as follows:

[0089] (1) The rod 4 moves horizontally, and the conveyor belt 21 acts on the bottom side of the rod 4 in the horizontal direction and enters the horizontal channel 12 until it abuts against the assembly plate 14 and is located on the pressure rod 31;

[0090] (2) The rod 4 swings vertically. When the first optical sensor 17 detects the rod 4 located on the pressure bar 31, it conveys an electrical signal to the information processing component (not shown in the figure). The information processing component (not shown in the figure) sends a signal to stop the work to the second drive 22 and a signal to start the work to the first drive 142. The first drive 142 is a lower swing motor. The lower swing motor drives the pressing strip 32 to swing towards the side close to the pressing strip 32. After contacting the top side of the rod 4, it continues to drive downward. During the downward pressing process, the guiding screw 311 moves along the guiding arc groove 143 until the guiding screw 311 triggers the lower limit switch 145, and the lower swing motor stops rotating.

[0091] (3) The rod 4 is discharged. When the second optical sensor 18 detects the rod 4 passing through the vertical channel 13, it conveys an electrical signal to the information processing component (not shown in the figure). The information processing component issues an instruction to the manipulator for taking the rod to clamp the rod 4, thereby achieving the purpose of discharging the rod.

[0092] (4) The pressing strip 32 is reset. When the rod 4 is taken away or dropped, the information processing component (not shown in the figure) controls the lower swing motor to rotate in the reverse direction to drive the pressing strip 32 to reverse and reset until the pressing strip 32 triggers the upper limit switch 144, and the lower swing motor stops rotating.

[0093] (5) The pressure bar 31 is reset. After a few seconds (preset time), the information processing component (not shown in the figure) sends an electrical signal to the electromagnetic lock 16. The lock head of the electromagnetic lock 16 retracts and no longer obstructs the movement of the guiding screw 311. The pressure bar 31 is reset under the elastic force of the torsion spring.

[0094] The above-disclosed are only the preferred embodiments of the present invention, and the scope of the patent protection of the present invention cannot be limited thereby. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A stick-out mechanism, characterized in that, Comprising: A frame, which is provided with a stick storage cavity, and a material pushing structure is arranged in the stick storage cavity; A horizontal channel, which is arranged at the discharge end of the stick storage cavity, and the material pushing structure can act on the stick in the horizontal direction to push the stick located in the stick storage cavity into the horizontal channel; A vertical channel, which is arranged at the discharge end of the horizontal channel and communicates with the stick storage cavity through the horizontal channel; A stick clamping assembly, which is arranged at the feed end of the vertical channel and includes a pressing rod acting on the bottom side of the stick and a pressing strip acting on the top side of the stick. The pressing rod and the pressing strip are respectively swingably arranged on the frame and can swing the stick located at the feed end of the vertical channel downward relative to the horizontal channel and extend out of the discharge end of the vertical channel.

2. The stick-taking-out mechanism according to claim 1, characterized in that, Further comprising: An assembly plate, which is arranged at the discharge end of the horizontal channel and forms the vertical channel with the frame, and can limit the stick from continuing to move in the horizontal direction.

3. The stick-taking-out mechanism according to claim 2, wherein, Further comprising: A first swing shaft, and the pressing rod is swingably connected to the assembly plate through the first swing shaft; A limiting structure, which is arranged on the assembly plate and can make the top side surface of the pressing rod flush with the bottom surface of the horizontal channel; An elastic member, which acts on the pressing rod and can continuously provide an elastic force for the pressing rod to swing upward and abut against the limiting structure; A second swing shaft, and the pressing strip is swingably connected to the assembly plate through the second swing shaft; A first drive, which is arranged on the assembly plate, and the output shaft is in transmission connection with the second swing shaft and can control the pressing strip to swing upward or downward.

4. The stick-taking-out mechanism according to claim 3, characterized in that, Further comprising: A guiding screw, which is arranged on one side of the pressing rod close to the assembly plate; A guiding arc groove, which is opened on the assembly plate, the limiting structure is arranged outside the assembly plate and at the top end of the guiding arc groove, and the free end of the guiding screw passes through the guiding arc groove and is exposed outside the assembly plate; when the top side surface of the pressing rod is flush with the bottom surface of the horizontal channel, the guiding screw abuts against the limiting structure.

5. The stick-taking-out mechanism according to claim 4, characterized in that, Further comprising: An upper limit switch, which is arranged on the assembly plate; A lower limit switch, which is arranged on the assembly and at the bottom end of the guiding arc groove; An information processing component, which is arranged on the frame. The upper limit switch and the lower limit switch are respectively electrically connected to the information processing component, and the first drive is electrically connected to an external power supply through the information processing component; the first drive controls the pressing strip to swing downward and act on the stick located on the pressing rod until the bottom side of the pressing rod triggers the lower limit switch; the first drive controls the pressing strip to swing upward to reset until the pressing strip triggers the upper limit switch.

6. The stick-out mechanism according to claim 5, characterized in that, Further comprising: An electromagnetic lock, which is arranged on the front side of the assembly plate, and the locking end is located at the bottom end of the guiding arc groove and can act on the guiding screw and limit the pressing rod from swinging upward; the electromagnetic lock is electrically connected to an external power supply through the information processing component.

7. The stick-taking-out mechanism according to claim 5, characterized in that, Further comprising: The first light sensor is arranged on the inner side of the assembly plate and is located directly above the pressure rod. The pressure rod is provided with a through hole for light to pass through and is electrically connected to the information processing component. When the stick is located on the top side of the pressure rod and the through hole is blocked, the first light sensor transmits an electrical signal to the information processing component, and the information processing component transmits a working signal to the first drive to control the pressure bar to swing downward.

8. The stick-taking-out mechanism according to claim 5, characterized in that, Also includes: A second optical sensor is disposed on the front side of the assembly plate and at an end away from the second swing axis, and is used to detect whether a stick is downward and extends out of the vertical channel; The second optical sensor is electrically connected to the information processing component.

9. The stick-taking-out mechanism according to claim 5, characterized in that, The pushing structure comprises: A conveyor belt, the bottom wall of the stick storage cavity is provided with a strip-shaped through hole for avoiding the conveyor belt, and the conveying surface of the conveyor belt extends into the stick storage cavity through the strip-shaped through hole and acts on the stick; The second drive is arranged on the frame, and the output end is drivingly connected to the conveyor belt and is electrically connected to an external power source through the information processing component.

10. The stick-out mechanism according to claim 3, characterized in that, Also includes: The one-way resisting structure is arranged on the assembly plate and is located at one end away from the second swing axis, and can allow the stick that swings downward to pass through, and can provide resisting force when the stick swings upward.

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