Automatic filling machine

Abstract

The present invention discloses an automatic filling machine, including a conveying device, a clamping device, a filling device and a control system, wherein the conveying device, the clamping device and the filling device are all electrically connected to the control system; the conveying device is used to convey the filling bottle; the clamping device includes a slide rail, a slide seat, a screw, a first sensor, a second cylinder and at least two groups of first cylinders, the first cylinder and the second cylinder are both arranged on the slide seat, the slide seat is slidably arranged on the slide rail, the screw passes through the slide seat and is threadedly connected thereto, the second cylinder and the first sensor are arranged at the feeding end of the first cylinder, the first cylinder, the second cylinder and the first sensor are all electrically connected to the control system; the filling device is arranged above the clamping device, and is used to fill the water into the filling bottle. The present invention solves the problem that the prior art cannot simultaneously fill multiple filling bottles with different spacings and the size of the filling bottles that can be filled cannot be changed.

Description

Technical Field

[0001] The invention relates to the technical field of filling, in particular to an automatic filling machine. Background Art

[0002] With the development trend of industrial automation, the emergence of automatic filling machines has greatly improved work efficiency and reduced labor intensity. However, in order to make the filling bottles match the filling speed of the filling machine, the current automatic filling machines, especially the water filling machines, need to manually place multiple filling bottles at equal distances when placing them on the conveying device; in addition, when the sizes of the filling bottles are inconsistent, the filling machine cannot adjust the clamping diameter or needs to stop and replace the clamp.

[0003] The above technical problems greatly restrict the filling efficiency of the filling machine. The present invention is used to solve the above technical problems. Summary of the invention

[0004] The invention provides an automatic filling machine, which is used to solve the problems in the prior art that a plurality of filling bottles with different spacings cannot be filled at the same time and the sizes of the filling bottles that can be filled cannot be changed.

[0005] In order to solve the above technical problems, the present invention provides an automatic filling machine, including a conveying device, a clamping device, a filling device and a control system, wherein the conveying device, the clamping device and the filling device are all electrically connected to the control system; the conveying device is used to convey the filling bottles; the clamping device includes a slide rail, a slide seat, a screw, a first sensor, a second cylinder and at least two groups of first cylinders, the first cylinder and the second cylinder are both arranged on the slide seat, the slide seat is slidably arranged on the slide rail, the screw passes through the slide seat and is threadedly connected thereto, the second cylinder and the first sensor are arranged at the feeding end of the first cylinder, and the first cylinder, the second cylinder and the first sensor are all electrically connected to the control system; the filling device is arranged above the clamping device, and is used to fill the filling bottles with water.

[0006] Preferably, the filling device includes a first motor, a filling lifting plate, a second sensor and a first screw driven by the first motor, the first screw passing through the filling lifting plate and being threadedly connected thereto, the second sensor being used to detect the height position of the filling lifting plate, at least two filling nozzles being provided on the filling lifting plate and each of the filling nozzles being connected to a magnetic pump, the filling nozzles being provided above the first cylinder and the number of the filling nozzles being equal to and corresponding to the number of the first cylinders, the first motor, the second sensor and the magnetic pump being electrically connected to the control system.

[0007] Preferably, the filling device further comprises a second motor, a bottle clamping lifting plate, a third sensor and a second screw driven by the second motor, the second screw passing through the bottle clamping lifting plate and being threadedly connected thereto, the third sensor being used to detect the height position of the bottle clamping lifting plate, at least two third cylinders being arranged on the bottle clamping lifting plate, the third cylinders being arranged below the filling nozzles and the number of the third cylinders being equal to and corresponding to the number of the filling nozzles, the second motor, the third sensor and the third cylinders being all electrically connected to the control system.

[0008] Preferably, the filling device further comprises a filling slide, a bottle clamping slide and a third motor, the filling slide is slidably disposed on the filling lifting plate, the bottle clamping slide is slidably disposed on the bottle clamping lifting plate, the filling nozzle is fixedly disposed on the filling slide, the third cylinder is fixedly disposed on the bottle clamping slide, and the third motor drives the filling slide and the bottle clamping slide to slide synchronously.

[0009] Preferably, the filling device further comprises a rack, a gear, a fourth sensor and a guide rod, the rack being fixed on the filling lifting plate, the third motor being fixed on the filling slide, the third motor being connected to the gear and the third motor driving the gear to rotate, the gear being meshed with the rack, one end of the guide rod being fixed on the bottle clamping slide and the other end passing through the filling lifting plate and the filling slide, the filling lifting plate being provided with a groove required for the guide rod to slide with the bottle clamping slide, the fourth sensor being used to detect the position of the filling slide, and the fourth sensor and the third motor being electrically connected to the control system.

[0010] Preferably, the screw rod is fixedly connected to a hand wheel, and the hand wheel is arranged on one side of the slide rail.

[0011] Preferably, the conveying device includes a fourth motor, a driving shaft, a driven shaft, a flat-top linear chain and guardrails arranged on both sides of the flat-top linear chain. The driving shaft and the driven shaft are arranged at both ends of the flat-top linear chain, and the fourth motor drives the driving shaft to rotate.

[0012] Preferably, it also includes a touch screen, and the touch screen is electrically connected to the control system.

[0013] Preferably, the number of the first cylinders is six and they are evenly arranged on both sides of the flat-top linear chain, and the filling nozzle is located directly above the flat-top linear chain.

[0014] Preferably, the second sensor and the third sensor are both photoelectric induction switches.

[0015] Compared with the prior art, the automatic filling machine of the present invention has the following beneficial effects:

[0016] 1. By setting a conveying device, a clamping device and a filling device, wherein the conveying device is used to convey the filling bottles, and the filling device is used to fill the water into the filling bottles, the automation of the filling machine is realized. Specifically, when placing the filling bottles on the conveying device, it is not necessary to place them according to a certain interval or position relationship. When the filling bottles on the conveying device pass through the first sensor and are detected by it, the first sensor records the number of filling bottles passing through it and sends an electrical signal to the control system. The control system sets the time for the first cylinder to act according to the speed of the conveying device and the distance between the first cylinder and the filling bottles and starts timing. When the timing is completed, the first cylinder acts to clamp the filling bottles. Similarly, the remaining first cylinders also clamp according to the timing of the control system. When the number of filling bottles recorded by the first sensor reaches the preset number, the control system will control the second cylinder to act to block the filling bottles behind to prevent them from affecting the filling of the clamped filling bottles under the action of the filling device.

[0017] 2. In addition, by setting the slide rail, the slide seat and the screw rod, the clamping gap of the first cylinder can be adjusted according to the size of the bottle body of the filling bottle, so that filling bottles of different sizes can be filled. Specifically, by rotating the screw rod, which is fixedly connected to the slide seat, the slide seat will move on the slide rail, and the first cylinder is arranged on the slide seat, so the clamping gap of the first cylinder can be changed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of a clamping device according to an embodiment of the present invention;

[0020] Figure 3 The filling device of the embodiment of the present invention is schematically shown in FIG. Figure 1 ;

[0021] Figure 4 The filling device of the embodiment of the present invention is schematically shown in FIG. Figure 2 ;

[0022] Figure 5 Schematic diagram of a conveying device according to an embodiment of the present invention.

[0023] In the figure,

[0024] 100, conveying device, 200, clamping device, 300, filling device;

[0025] 1. Slide rail, 2. Slide seat, 3. Screw, 4. First cylinder, 5. First sensor, 6. Second cylinder, 7. First motor, 8. Filling lifting plate, 9. Second sensor, 10. First screw rod, 11. Filling nozzle, 12. Magnetic pump, 13. Second motor, 14. Bottle clamping lifting plate, 15. Third sensor, 16. Second screw rod, 17. Third cylinder, 18. Filling slide plate, 19. Bottle clamping slide plate, 20. Third motor, 21. Rack, 23. Fourth sensor, 24. Guide rod, 25. Groove, 26. Handwheel, 27. Fourth motor, 28. Driving shaft, 29. Driven shaft, 30. Flat-top straight chain, 31. Guardrail. DETAILED DESCRIPTION

[0026] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “top” and “bottom” are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of the present invention, it should be understood that the present invention uses the terms "first", "second", etc. to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.

[0029] Combination Figure 1-Figure 5As shown, an embodiment of the present invention provides an automatic filling machine, including a conveying device 100, a clamping device 200, a filling device 300 and a control system, wherein the conveying device 100, the clamping device 200 and the filling device 300 are all electrically connected to the control system; the conveying device 100 is used to convey the filled bottles; the clamping device 200 includes a slide rail 1, a slide seat 2, a screw 3, a first sensor 5, a second cylinder 6 and at least two groups of first cylinders 4 (specifically, both sides of the conveying device 100 are provided with first cylinders, and the two opposite first cylinders are called a group of first cylinders, and the two first cylinders of the same group of first cylinders have the same structure, action sequence and function). They are also consistent, a group of first cylinders clamps a filling bottle), the first cylinder 4 and the second cylinder 6 are both arranged on the slide 2, the slide 2 is slidably arranged on the slide rail 1, the screw 3 passes through the slide 2 and is threadedly connected thereto, the second cylinder 6 and the first sensor 5 are arranged at the feeding end of the first cylinder 4 (the feeding end mentioned here refers to the direction of transportation along the conveying device 100, the filling bottle first passes through the second cylinder 6 and the first sensor 5, and then passes through the first cylinder 4), the first cylinder 4, the second cylinder 6 and the first sensor 5 are all electrically connected to the control system; the filling device 300 is arranged above the clamping device 200, and is used to fill the filling bottle with water.

[0030] Based on the above technical scheme, an embodiment of the present invention discloses an automatic filling machine, which realizes the automation of the filling machine by setting a conveying device 100, a clamping device 200 and a filling device 300, wherein the conveying device 100 is used to convey the filling bottle, and the filling device 300 is used to fill the water into the filling bottle. Specifically, when placing the filling bottles on the conveying device 100, it is not necessary to place them according to a certain interval or position relationship. When the filling bottles on the conveying device 100 pass through the first sensor 5 and are detected by it, the first sensor 5 records the number of filling bottles passing through it and sends an electrical signal to the control system. The control system sets the time for the first cylinder 4 to move according to the speed of the conveying device 100 and the distance between the first cylinder 4 and the filling bottles and starts timing. When the timing is completed, the first cylinder 4 moves to clamp the filling bottles. Similarly, the remaining first cylinders 4 also clamp according to the timing of the control system. When the number of filling bottles recorded by the first sensor 5 reaches a preset number, the control system will control the second cylinder 6 to move to block the filling bottles behind to prevent them from affecting the filling of the clamped filling bottles under the action of the filling device 300. In addition, by setting the slide rail 1, the slide seat 2 and the screw 3, the clamping gap of the first cylinder 4 can be adjusted according to the size of the bottle body of the filling bottle, so it is suitable for filling bottles of different sizes. Specifically, by rotating the screw rod 3 which is fixedly connected to the slide seat 2 , the slide seat 2 will move on the slide rail 1 . The first cylinder 4 is disposed on the slide seat 2 , so the clamping gap of the first cylinder 4 can be changed.

[0031] Preferably, the filling device 300 includes a first motor 7, a filling lifting plate 8, a second sensor 9 and a first screw 10 driven by the first motor 7, the first screw 10 passes through the filling lifting plate 8 and is threadedly connected thereto, the second sensor 9 is used to detect the height position of the filling lifting plate 8, at least two filling nozzles 11 are provided on the filling lifting plate 8 and the filling nozzles 11 are all connected to a magnetic pump 12, the filling nozzles 11 are provided above the first cylinder 4 and the number is equal to the number of the first cylinder 4 and corresponds one to one, the first motor 7, the second sensor 9 and the magnetic pump 12 are all electrically connected to the control system. Therefore, the control system can control the up and down movement of the filling lifting plate 8 by driving the first motor 7, so that the filling nozzles 11 on the filling lifting plate 8 can move up and down, thereby filling bottles of different heights. Specifically, the first screw rod 10 can make the filling lifting plate 8 move up and down by rotating the thread, and the second sensor 9 can detect the height of the filling lifting plate 8, thereby feeding back to the control system so that it can determine whether to continue lifting or stop lifting. When the filling height is reached, the magnetic pump 12 can be controlled by the control system, so that the filling nozzle 11 connected to the magnetic pump 12 fills the water into the filling bottle.

[0032] Preferably, the filling device 300 further includes a second motor 13, a bottle clamping lifting plate 14, a third sensor 15, and a second screw rod 16 driven by the second motor 13, the second screw rod 16 passes through the bottle clamping lifting plate 14 and is threadedly connected thereto, the third sensor 15 is used to detect the height position of the bottle clamping lifting plate 14, at least two third cylinders 17 are provided on the bottle clamping lifting plate 14, the third cylinders 17 are provided below the filling nozzles 11 and the number of the third cylinders 17 is equal to the number of the filling nozzles 11 and corresponds one to one, the second motor 13, the third sensor 15 and the third cylinders 17 are all electrically connected to the control system. Therefore, the control system can control the up and down movement of the bottle clamping lifting plate 14 through the second motor 13, so that the third cylinder 17 on the bottle clamping lifting plate 14 can move up and down, so as to fix the bottle mouths of the filling bottles at different heights and prevent the filling bottles from tipping over during the filling process. Specifically, the second screw rod 16 can move the bottle clamping lifting plate 14 up and down by rotating the thread, and the third sensor 15 can detect the height of the bottle clamping lifting plate 14, thereby feeding back to the control system so that it can determine whether to continue lifting or stop lifting. When the clamping height is reached, the control system controls the third cylinder 17 to operate to clamp the bottle mouth of the filling bottle.

[0033] Preferably, the filling device 300 further comprises a filling slide 18, a bottle clamping slide 19 and a third motor 20, the filling slide 18 is slidably disposed on the filling lifting plate 8, the bottle clamping slide 19 is slidably disposed on the bottle clamping lifting plate 14, the filling nozzle 11 is fixedly disposed on the filling slide 18, the third cylinder 17 is fixedly disposed on the bottle clamping slide 19, and the third motor 20 drives the filling slide and the bottle clamping slide to slide synchronously. Therefore, under the action of the third motor 20, the filling nozzle 11 on the filling slide 18 and the third cylinder 17 on the bottle clamping slide 19 can move with the conveying device 100, and fill the water into the filling bottle during the movement, that is, avoiding the disadvantage of having to stop the conveying device 100 to achieve filling, and achieving filling while moving, which greatly improves the work efficiency.

[0034] There are many ways for the third motor 20 to drive the filling slide 18 and the bottle clamping slide 19 to move, which can be driven by a cylinder, moved by a slide rail or a hydraulic transmission, etc. Preferably, the filling device 300 also includes a rack 21, a gear, a fourth sensor 23 and a guide rod 24. The rack 21 is fixed on the filling lifting plate 8, the third motor 20 is fixed on the filling slide 18, the third motor 20 is connected to the gear and the third motor 20 drives the gear to rotate, the gear is meshed with the rack 21, one end of the guide rod 24 is fixed on the bottle clamping slide 19 and the other end passes through the filling lifting plate 8 and the filling slide 18, the filling lifting plate 8 is provided with a groove 25 required for the guide rod 24 to slide with the bottle clamping slide 19, the fourth sensor 23 is used to detect the position of the filling slide 18, and the fourth sensor 23 and the third motor 20 are both electrically connected to the control system. Specifically, since the third motor 20 is fixed on the filling slide 18, the third motor 20 is connected to the gear, the gear and the rack 21 are meshed with gears, and the rack 21 is fixed on the filling lifting plate 8, when the third motor 20 rotates, the filling slide 18 will move relative to the filling lifting plate 8 with the cooperation of the rack gear; and since the guide rod 24 is fixed on the bottle clamping slide 19 and the other end thereof penetrates the filling lifting plate 8 and the filling slide 18, and the filling lifting plate 8 is provided with a groove 25 required for the guide rod 24 to slide with the bottle clamping slide 19, the filling slide 18 can drive the bottle clamping slide 19 to move through the guide rod 24 when the filling lifting plate 8 does not move, thereby realizing the synchronous movement of the filling slide 18 and the bottle clamping slide 19, and in order to reduce the friction during the movement, slide rails are provided below the filling slide 18 and the bottle clamping slide 19 to enable them to move smoothly and stably.

[0035] Preferably, the screw rod 3 is fixedly connected to a hand wheel 26 , and the hand wheel 26 is arranged on one side of the slide rail 1 , so that the screw rod 3 can be rotated by the hand wheel 26 .

[0036] Preferably, the conveying device 100 includes a fourth motor 27, a driving shaft 28, a driven shaft 29, a flat-top linear chain 30, and guardrails 31 disposed on both sides of the flat-top linear chain 30. The driving shaft 28 and the driven shaft 29 are disposed at both ends of the flat-top linear chain 30, and the fourth motor 27 drives the driving shaft 28 to rotate. Therefore, the conveying device 100 uses the fourth motor 27 as a power to drive the driving shaft 28 to rotate and convey the filling bottles. The conveying speed of the fourth motor 27 can be parameterized by the control system, and the guardrail 31 can be adjusted in width to facilitate the adaptation to filling bottles of different sizes.

[0037] Preferably, a touch screen 400 is further included, and the touch screen 400 is electrically connected to the control system, so the control system can be operated by operating the touch screen 400.

[0038] In order to take into account both the filling efficiency and the space occupied by the machine, preferably, the number of the first cylinders 4 is six groups (a total of 12 first cylinders, and since two oppositely arranged first cylinders form a group, there are a total of 6 groups) and they are evenly arranged on both sides of the flat-top straight chain 30. In addition, the filling nozzle 11 is located directly above the flat-top straight chain 30, so that the filling bottle can be directly filled.

[0039] Preferably, the second sensor 9 and the third sensor 15 are both photoelectric induction switches, which are convenient for detecting the height of the filling lifting plate 8 and the bottle clamping lifting plate 14. Specifically, the detection height of the filling lifting plate 8 and the bottle clamping lifting plate 14 can be changed by changing the origin sensing position of the second sensor 9 and the third sensor 15.

[0040] In summary, the working process of the embodiment of the present invention is as follows:

[0041] 1. The fourth motor 27 drives the flat-top straight chain 30 to transport the filling bottles. When a filling bottle passes through the first sensor 5, the first sensor 5 counts and transmits an electrical signal to the control system. The filling bottles pass through the six evenly arranged groups of first cylinders 6 in turn. After completing the counting, the six groups of first cylinders 6 clamp six filling bottles in turn. At this time, when the seventh filling bottle passes through the first sensor 5, the first sensor 5 reaches the preset counting number. Therefore, the control system controls the second cylinder 6 to clamp the seventh filling bottle after receiving the signal, thereby blocking the bottles behind, so as not to affect the filling of the first six filling bottles.

[0042] 2. The first motor 7 drives the first screw rod 10, thereby driving the filling lifting plate 8 to descend to the filling position, and the magnetic pump 12 starts to work, so that the filling nozzle 11 opens to fill the water agent into the filling bottle, and at the same time the first cylinder 6 resets and releases, and the third motor 20 drives the filling nozzle 11 and the third cylinder 17 to move backward and synchronize with the speed of the conveying device 100, and at the same time the first motor 7 drives the first screw rod 10 to drive the filling lifting plate 8 to move upward, so that its rising speed is consistent with the rising speed of the water level in the filling bottle, ensuring that the filling nozzle 11 and the water level rise synchronously. Specifically, the filling capacity of the filling bottle is set by time, that is, the filling capacity is determined by controlling the opening time of the filling nozzle 11 through the magnetic pump 12, and when the filling nozzle 11 moves to the bottle shoulder of the filling bottle, it is exactly the set filling capacity, and at the same time the third motor 20 completes the entire set stroke.

[0043] 3. After the filling is completed, the filling slide 18 and the bottle clamping slide 19 are reset. Specifically, by accelerating the lifting of the filling lifting plate 8 and accelerating the rotation of the third motor 20 in the opposite direction, the filling device 300 returns to its original position and performs the next round of filling. After the next filling starts, the second cylinder 6 is reset and released, so that the filling bottle continues to move forward.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. An automatic filling machine, It is characterized in that It includes a conveying device, a clamping device, a filling device and a control system, wherein the conveying device, the clamping device and the filling device are all electrically connected to the control system; The conveying device is used to convey the filling bottles; The clamping device comprises a slide rail, a slide seat, a screw, a first sensor, a second cylinder and at least two groups of first cylinders, the first cylinder and the second cylinder are both arranged on the slide seat, the slide seat is slidably arranged on the slide rail, the screw passes through the slide seat and is threadedly connected thereto, the second cylinder and the first sensor are arranged at the feeding end of the first cylinder, and the first cylinder, the second cylinder and the first sensor are all electrically connected to the control system; The filling device is arranged above the clamping device and is used to fill the liquid into the filling bottle; The filling device comprises a first motor, a filling lifting plate, a second sensor and a first screw driven by the first motor, the first screw passing through the filling lifting plate and being threadedly connected thereto, the second sensor being used to detect the height position of the filling lifting plate, at least two filling nozzles being arranged on the filling lifting plate and each of the filling nozzles being connected to a magnetic pump, the filling nozzles being arranged above the first cylinder and the number of the filling nozzles being equal to and corresponding to the number of the first cylinder, the first motor, the second sensor and the magnetic pump being electrically connected to the control system; The screw rod is fixedly connected with a hand wheel, and the hand wheel is arranged on one side of the slide rail; The filling device further comprises a second motor, a bottle clamping lifting plate, a third sensor and a second screw driven by the second motor, the second screw passing through the bottle clamping lifting plate and being threadedly connected thereto, the third sensor being used to detect the height position of the bottle clamping lifting plate, at least two third cylinders being arranged on the bottle clamping lifting plate, the third cylinders being arranged below the filling nozzles and the number of the third cylinders being equal to and corresponding to the number of the filling nozzles, the second motor, the third sensor and the third cylinders being all electrically connected to the control system; The filling device also includes a filling slide, a bottle clamping slide and a third motor. The filling slide is slidably disposed on the filling lifting plate, the bottle clamping slide is slidably disposed on the bottle clamping lifting plate, the filling nozzle is fixedly disposed on the filling slide, the third cylinder is fixedly disposed on the bottle clamping slide, and the third motor drives the filling slide and the bottle clamping slide to slide synchronously.

2. The automatic filling machine as claimed in claim 1, It is characterized in that The filling device also includes a rack, a gear, a fourth sensor and a guide rod, the rack is fixed on the filling lifting plate, the third motor is fixed on the filling slide, the third motor is connected to the gear and the third motor drives the gear to rotate, the gear is meshed with the rack, one end of the guide rod is fixed on the bottle clamping slide and the other end passes through the filling lifting plate and the filling slide, the filling lifting plate is provided with a groove required for the guide rod to slide with the bottle clamping slide, the fourth sensor is used to detect the position of the filling slide, and the fourth sensor and the third motor are both electrically connected to the control system.

3. The automatic filling machine according to any one of claims 1 to 2, It is characterized in that The conveying device includes a fourth motor, a driving shaft, a driven shaft, a flat-top linear chain and guardrails arranged on both sides of the flat-top linear chain. The driving shaft and the driven shaft are arranged at both ends of the flat-top linear chain. The fourth motor drives the driving shaft to rotate.

4. The automatic filling machine according to any one of claims 1 to 2, It is characterized in that It also includes a touch screen, which is electrically connected to the control system.

5. The automatic filling machine as claimed in claim 3, It is characterized in that The number of the first cylinders is six and they are evenly arranged on both sides of the flat-top linear chain, and the filling nozzle is located directly above the flat-top linear chain.

6. The automatic filling machine according to any one of claims 1 to 2, It is characterized in that The second sensor and the third sensor are both photoelectric induction switches.

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