Food sorting device based on visual inspection

Abstract

The invention relates to the technical field of food sorting, in particular to a food sorting device based on visual inspection, which comprises a conveying belt, a visual unit is mounted above the conveying belt, an arrangement positioning box is mounted at one end of the conveying belt, a collection hopper is mounted at the top of the arrangement positioning box, an arrangement groove is formed in the arrangement positioning box, and a feeding hopper is mounted in the arrangement groove. An inclined plate is installed on the inner wall of one side of the discharging channel, a bent baffle is installed on the other side of the discharging channel, a positioning baffle is installed on the inner wall of the arranging and positioning box, and a connecting plate is installed on the outer wall of one side of the positioning baffle. The fruits can independently fall on the conveying belt one by one, so that the situation that a plurality of fruits are stacked together to affect the accuracy of visual inspection is avoided; each independently falling fruit is blocked and positioned by the positioning baffle in advance, and the positioning baffle is opened in a reciprocating manner, so that the intervals among the fruits are kept consistent.

Description

Technical Field

[0001] The present invention relates to the technical field of food sorting, and particularly to a food sorting device based on visual detection. Background Art

[0002] In the fields of food processing and sales, traditional sorting methods mainly rely on manual labor. For example, in the sorting of fruits and vegetables, manual workers identify the maturity, fruit diameter, surface defects, etc. It is difficult to guarantee the accuracy of manual sorting, and it is easily affected by factors such as the discrimination ability and mood of workers, resulting in deviations in grading standards. Especially for small fruits and vegetables, the grading error is relatively large. In addition, for some foods with complex appearance characteristics, such as tomatoes with large differences in size, color difference, and defect diversity, it is difficult to accurately identify and classify them using traditional methods.

[0003] The Chinese Patent Network discloses a panoramic vision potato sorting and defect detection device with the publication number: CN106238342A, which includes a conveying device, a detection dark box, a sorting mechanism, an infrared sensor module, and an image acquisition mechanism. It mainly conducts visual sorting of potatoes through the detection dark box and the infrared sensor module.

[0004] In the above visual detection, there is no intermittent positioning and blanking structure, resulting in inconsistent intervals between the fruits after blanking. When conducting visual detection on the fruits, they need to be detected one by one. If the intervals are too close, it may cause detection errors; if the intervals are too far, it will affect the detection efficiency. Summary of the Invention

[0005] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract and title of the present application, to avoid obscuring the purpose of this part, the abstract, and the title. However, such simplifications or omissions shall not be used to limit the scope of the present invention.

[0006] In view of the above problems of the non-intermittent positioning and blanking structure, the present invention is proposed.

[0007] Therefore, the purpose of the present invention is to provide a food sorting device based on visual detection.

[0008] To solve the above technical problems, the present invention provides the following technical solution: A food sorting device based on visual detection, including a conveyor belt, above which a visual unit is installed, and a sorting component is installed on one side of the conveyor belt;

[0009] One end of the conveyor belt is equipped with an arrangement and positioning box. A hopper is installed on the top of the arrangement and positioning box. An arrangement groove is formed inside the arrangement and positioning box. A blanking channel is formed on one side of the arrangement groove. An inclined plate is installed on the inner wall of one side of the blanking channel. A cross arrangement frame is installed at the bottom side area of the arrangement groove through a shaft body. The cross arrangement frame is rotationally limited by an unlocking plate and a locking rod that are movably connected to the bottom side of the inclined plate. A bent baffle that cooperates with the inclined plate is movably connected to one side of the inclined plate. A positioning baffle is installed on the inner wall of the arrangement and positioning box. A connecting plate is installed on the outer wall of one side of the positioning baffle. A pressure-receiving arc block is installed on the top of the connecting plate. A pressure-touching convex block that can circularly rotate and touch the pressure-receiving arc block is installed on the inner wall of the arrangement and positioning box. The rotational transmission of the pressure-touching convex block is connected to the transmission of the conveyor belt through a transmission mechanism.

[0010] As a preferred solution of the food sorting device based on visual detection according to the present invention, wherein: a support spring is installed on the outer wall of one side of the pressure-receiving arc block, and the other end of the support spring is connected to the inner wall of the arrangement and positioning box. The support spring maintains the positioning baffle in a vertical state when the pressure-receiving arc block is not pressed. The connecting plate and the bent baffle are connected through a movable connecting rod. When the pressure-receiving arc block is pressed, the connection end of the bent baffle and the movable connecting rod is pulled downward, and at this time, the other end of the bent baffle moves toward the inclined plate side.

[0011] As a preferred solution of the food sorting device based on visual detection according to the present invention, wherein: a through groove is formed on the inner bottom wall of the arrangement groove. The through groove provides an installation space for the cross arrangement frame in the area below the arrangement groove, and the arrangement groove is in an inclined state, so that the blanking fruits have a thrust on the cross arrangement frame. A disc is installed on the outer wall of one side of the cross arrangement frame. Four groups of locking grooves are evenly formed on the disc. The locking grooves are used for the locking rods movably connected to the inner wall of the arrangement and positioning box through pin shafts to be inserted and locked.

[0012] As a preferred solution of the food sorting device based on visual detection according to the present invention, wherein: a fixing plate is installed on the bottom side of the inclined plate. The fixing plate is used for movably connecting the middle area of the unlocking plate. When one end of the unlocking plate is pressed upward, the other end of the unlocking plate can downwardly touch the locking rod. A fixing spring is installed on the top of the unlocking plate, and the other end of the fixing spring is connected to the bottom of the inclined plate.

[0013] As a preferred solution of the food sorting device based on visual detection according to the present invention, wherein: a transmission wheel is installed on the outer wall of the arrangement and positioning box. The transmission wheel is attached to the conveyor belt of the conveyor. A driven wheel is installed on the inner wall of the arrangement and positioning box through a shaft body. The other end of the shaft body connecting the driven wheel is also installed with a first gear.

[0014] As a preferred solution of the food sorting device based on visual detection described in the present invention, the inner wall of the arrangement and positioning box is provided with a second gear via a shaft, and the other end of the shaft connected to the second gear is connected to the contact and pressure protrusion.

[0015] As a preferred solution of the food sorting device based on visual detection described in the present invention, the driving wheel and the driven wheel are connected to each other through a belt member, and the first gear and the second gear are in meshing state.

[0016] As a preferred solution of the food sorting device based on visual detection described in the present invention, wherein: a rotating ring is installed on the inner bottom wall of the collecting hopper, an inclined block is installed on the inner wall of the rotating ring, and a tooth groove is opened on the outer wall of the rotating ring.

[0017] As a preferred solution of the food sorting device based on visual inspection described in the present invention, a transmission assembly is installed in the arrangement and positioning box, and the transmission assembly includes a first conical tooth installed on a disc, and a conical tooth transmission rod is meshingly installed on the conical tooth, and a second conical tooth is transmission-installed on one end of the conical tooth transmission rod, and the top of the second conical tooth is connected to a transmission tooth through a shaft, and the transmission tooth is meshing with the tooth groove.

[0018] As a preferred solution of the food sorting device based on visual detection described in the present invention, the conical tooth transmission rod is composed of two groups of conical teeth and a rod body, so that the first conical teeth can drive the second conical teeth to rotate.

[0019] Beneficial Effects

[0020] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0021] 1. The fruits can be arranged in the arrangement slot first, and the interval discharge is repeated in a cycle, so that the fruits can fall on the conveyor belt one by one, avoiding multiple fruits from piling together and affecting the accuracy of visual inspection;

[0022] Second, every time a fruit falls on the conveyor belt, its rotating circle can be offset and rotated, thereby ensuring that the collecting hopper can smoothly convey the fruit to the arrangement slot;

[0023] 3. Each fruit that falls individually is first blocked and positioned by the positioning baffle, and the positioning baffle is opened reciprocatingly with a consistent opening interval, thereby keeping the intervals between the fruits consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0025] Figure 1 It is an overall schematic diagram of a food sorting device based on visual detection.

[0026] Figure 2 It is an internal schematic diagram of the arrangement and positioning box of a food sorting device based on visual detection.

[0027] Figure 3 It is a schematic diagram of the arrangement groove of a food sorting device based on visual detection.

[0028] Figure 4 It is a schematic diagram of the rotating ring of a food sorting device based on visual detection.

[0029] Figure 5 It is a schematic diagram of the bending baffle of a food sorting device based on visual detection.

[0030] Figure 6 It is a schematic diagram of the cross arrangement frame of a food sorting device based on visual detection.

[0031] Figure 7 It is a schematic diagram of the locking rod of a food sorting device based on visual detection.

[0032] Reference numerals: 1, conveyor belt; 11, vision unit; 12, sorting component; 2, arrangement and positioning box; 21, aggregate hopper; 211, rotating ring; 212, inclined block; 213, tooth groove; 22, arrangement groove; 221, through groove; 222, cross arrangement frame; 223, disc; 224, locking groove; 225, locking rod; 226, fixing plate; 227, unlocking plate; 228, fixing spring; 23, blanking channel; 231, inclined plate; 232, bending baffle; 24, positioning baffle; 241, connecting plate; 242, pressed arc block; 243, supporting spring; 244, movable connecting rod; 3, transmission wheel; 31, driven wheel; 311, first gear; 32, second gear; 321, touch convex block; 4, transmission component; 41, first conical tooth; 42, conical tooth transmission rod; 43, second conical tooth; 44, transmission tooth. Detailed implementation manners

[0033] To make the above objects, features and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific implementation manners of the present invention in conjunction with the accompanying drawings of the specification.

[0034] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0035] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation manner of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an individual or selectively exclusive embodiment with other embodiments.

[0036] Thirdly, the present invention is described in detail in conjunction with schematic diagrams. When detailing the embodiments of the present invention, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally in a non-general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0037] Embodiment

[0038] Refer to Figure 1 - Figure 7 , which is the first embodiment of the present invention. This embodiment provides a food sorting device based on visual detection, including a conveyor belt 1. Above the conveyor belt 11, a visual unit 11 is installed. On one side of the conveyor belt 1, a sorting component 12 is installed. The conveyor belt 1 conveys fruits through the visual unit 11, and the visual unit 11 system controls the operation of the sorting component 12, so as to sort the fruits by controlling the sorting component 12.

[0039] Specifically, at one end of the conveyor belt 1, an arrangement and positioning box 2 is installed. At the top of the arrangement and positioning box 2, a collecting hopper 21 is installed. Inside the arrangement and positioning box 2, an arrangement groove 22 is opened. On one side of the arrangement groove 22, a blanking channel 23 is opened. On one side inner wall of the blanking channel 23, an inclined plate 231 is installed. At the bottom side area of the arrangement groove 22, a cross arrangement frame 222 is installed through a shaft body. The cross arrangement frame 222 is rotationally limited by an unlocking plate 227 and a locking rod 225 movably connected to the bottom side of the inclined plate 231. On one side of the inclined plate 231, a bent baffle 232 that cooperates with it is movably connected. On the inner wall of the arrangement and positioning box 2, a positioning baffle 24 is installed. On the outer wall of one side of the positioning baffle 24, a connecting plate 241 is installed. At the top of the connecting plate 241, a pressure-receiving arc block 242 is installed. On the inner wall of the arrangement and positioning box 2, a touch pressure convex block 321 that can circularly rotate and touch the pressure-receiving arc block 242 is installed. The rotational transmission of the touch pressure convex block 321 is connected to the transmission of the conveyor belt 1 through a transmission mechanism;

[0040] Its aggregate hopper 21 is used to stack fruits, and the fruits naturally fall into the arrangement groove 22 for discharging. When the conveyor belt 1 operates, the driving mechanism drives the contact pressing convex block 321 to reciprocally press the pressure-receiving arc block 242. Each contact pressing will drive the positioning baffle 24 and the bending baffle 232 to deflect and move. Each deflection and movement of the bending baffle 232 will press the unlocking plate 227 and the locking rod 225, enabling the cross arrangement frame 222 to be unlocked. At this time, relying on the inclined state of the arrangement groove 22, the fruits naturally push the cross arrangement frame 222, causing the cross arrangement frame 222 to rotate and drop a single fruit from the inclined plate 231 and the bending baffle 232. When the positioning baffle 24 deflects and moves, it will release the fruit that has fallen and moved to one side of the positioning baffle 24 and is subsequently restricted from moving, thereby making the interval between the fruits discharged each time the same.

[0041] Further, a support spring 243 is installed on the outer wall of one side of the pressure-receiving arc block 242, and the other end of the support spring 243 is connected to the inner wall of the arrangement positioning box 2. The support spring 243 maintains the positioning baffle 24 in a vertical state when the pressure-receiving arc block 242 is not pressed. The connecting plate 241 and the bending baffle 232 are connected by a movable connecting rod 244, so that when the pressure-receiving arc block 242 is pressed, the connecting end of the bending baffle 232 and the movable connecting rod 244 is pulled downward, and at this time, the other end of the bending baffle 232 moves toward the inclined plate 231 side.

[0042] Further, a through groove 221 is opened on the inner bottom wall of the arrangement groove 22. The through groove 221 provides an installation space for the cross arrangement frame 222 in the area below the arrangement groove 22, and the arrangement groove 22 is in an inclined state, so that the discharged fruits have a thrust on the cross arrangement frame 222. A disc 223 is installed on the outer wall of one side of the cross arrangement frame 222, and four groups of locking grooves 224 are evenly opened on the disc 223. The locking grooves 224 are used for the locking rod 225 movably connected to the inner wall of the arrangement positioning box 2 by a pin shaft to be embedded and locked.

[0043] Further, a fixing plate 226 is installed on the bottom side of the inclined plate 231. The fixing plate 226 is used to movably connect the middle section area of the unlocking plate 227, so that when one end of the unlocking plate 227 is pressed upward, the other end of the unlocking plate 227 can press the locking rod 225 downward. A fixing spring 228 is installed on the top of the unlocking plate 227, and the other end of the fixing spring 228 is connected to the bottom of the inclined plate 231. The fixing spring 228 pulls the unlocking plate 227, so that the locking rod 225 at one end of the unlocking plate 227 locks the locking groove 224 of the disc 223.

[0044] Further, the driving wheel 3 and the driven wheel 31 are drivingly connected by a belt member, and the first gear 311 and the second gear 32 are in a meshing state. The transmission efficiency of the conveyor belt 1 and the pressing convex block 321 can be set according to the gear ratio of the first gear 311 and the second gear 32.

[0045] Further, the inner wall of the arranging and positioning box 2 is provided with a second gear 32 through a shaft body, and the other end of the shaft body connecting the second gear 32 is connected to the pressing convex block 321.

[0046] Further, the driving wheel 3 and the driven wheel 31 are drivingly connected by a belt member, and the first gear 311 and the second gear 32 are in a meshing state.

[0047] Further, a rotating ring 211 is installed on the inner bottom wall of the aggregate hopper 21, an inclined block 212 is installed on the inner wall of the rotating ring 211, and a tooth groove 213 is formed on the outer wall of the rotating ring 211.

[0048] Further, a transmission assembly 4 is installed in the arranging and positioning box 2. The transmission assembly 4 includes a first conical gear 41 installed on a disc 223. The conical gear is meshingly installed with a conical gear transmission rod 42. One end of the conical gear transmission rod 42 is drivingly installed with a second conical gear 43. The top of the second conical gear 43 is connected with a transmission gear 44 through a shaft body, and the transmission gear 44 is meshed with the tooth groove 213. The conical gear transmission rod 42 is composed of two conical gears and a rod body, so that the first conical gear 41 can drive the second conical gear 43 to rotate.

[0049] Working principle: When sorting food, the driving wheel 3 is driven by the conveyor belt 1. The driving wheel 3 drives the driven wheel 31 to rotate. The rotation of the driven wheel 31 drives the first gear 311 to rotate. The first gear 311 drives the second gear 32 to rotate. The second gear 32 drives the contact pressure convex block 321 to rotate, so that the contact pressure convex block 321 cyclically contacts and presses the pressure-receiving arc block 242. The fruits are stacked in the inclined arrangement groove 22. When the contact pressure convex block 321 contacts and presses the pressure-receiving arc block 242, the bending baffle 232 moves towards the inclined plate 231 side. The bending baffle 232 contacts and presses the unlocking plate 227. The unlocking plate 227 rotates around the fixed point of the fixing plate 226, so that the unlocking plate 227 rotates and presses the locking rod 225, causing the locking rod 225 to move downward and separate from the locking groove 224. At this time, the disc 223 is not locked. The arrangement groove 22 has a certain slope, so that the fruits tend to move towards the inclined plate 231 side. When the disc 223 is unlocked, the fruits touch the cross arrangement frame 222 and rotate. The fruits start to slide towards the inclined plate 231 side. At this time, the pressure-receiving arc block 242 is no longer pressed. The inclined plate 231 and the bending baffle 232 are reopened, and the positioning baffle 24 is in a vertical blocking state at this time. The fruits directly above the cross arrangement frame 222 fall onto the conveyor belt 1 from the opening between the inclined plate 231 and the bending baffle 232. The conveyor belt 1 moves the fruits to one side of the positioning baffle 24 and is restricted from moving until the convex part of the contact pressure convex block 321 rotates and contacts and presses the pressure-receiving arc block 242 next time. The pressure-receiving slider presses one side of the connecting plate 241, causing the positioning baffle 24 on the other side of the connecting plate 241 to rotate and open. At this time, the positioning baffle 24 can release the fruits. When the fruits are released on one side of the positioning baffle 24, the bending baffle 232 and the inclined plate 231 are re-closed, and a new fruit falls in again. When the pressure-receiving arc block 242 is not pressed, the fruits fall back onto the conveyor belt 1 again. This process repeats cyclically, so that each released fruit can be positioned, and the interval between each fruit is kept consistent, and the fruit interval maintains the best distance;

[0050] Moreover, each rotation of the disc 223 will drive the rotating ring 211 to rotate slightly through the transmission of the first conical gear 41, the conical gear transmission rod 42 and the second conical gear 43, so that the slightly rotating rotating ring 211 and the inclined block 212 break the possible static balance in the hopper 21 (that is, the fruits are stuck at the connection port between the arrangement groove 22 and the hopper 21), thereby enabling the fruits to be smoothly sorted individually in the arrangement groove 22.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A food sorting device based on visual detection, characterized in that: Including, a conveyor belt (1), above which a vision unit (11) is installed, and on one side of the conveyor belt (1), a sorting component (12) is installed; at one end of the conveyor belt (1), an arranging and positioning box (2) is installed. At the top of the arranging and positioning box (2), a collecting hopper (21) is installed. Inside the arranging and positioning box (2), an arranging groove (22) is formed. On one side of the arranging groove (22), a blanking channel (23) is formed. On one side inner wall of the blanking channel (23), an inclined plate (231) is installed. In the bottom side area of the arranging groove (22), a cross arranging frame (222) is installed through a shaft body. The cross arranging frame (222) is locked and limited by an unlocking plate (227) and a locking rod (225) which are movably connected to the bottom side of the inclined plate (231). On one side of the inclined plate (231), a bent baffle (232) which cooperates with it is movably connected. On the inner wall of the arranging and positioning box (2), a positioning baffle (24) is installed. On the outer wall of one side of the positioning baffle (24), a connecting plate (241) is installed. On the top of the connecting plate (241), a pressure-receiving arc block (242) is installed. On the inner wall of the arranging and positioning box (2), a pressure-touching convex block (321) which can circularly rotate and touch the pressure-receiving arc block (242) is installed. The rotational transmission of the pressure-touching convex block (321) is connected to the transmission of the conveyor belt (1) through a transmission mechanism.

2. The food sorting device based on visual detection according to claim 1, wherein: On the outer wall of one side of the pressure-receiving arc block (242), a support spring (243) is installed, and the other end of the support spring (243) is connected to the inner wall of the arranging and positioning box (2). The support spring (243) maintains the positioning baffle (24) in a vertical state when the pressure-receiving arc block (242) is not pressured. Between the connecting plate (241) and the bent baffle (232), they are connected through a movable connecting rod (244). When the pressure-receiving arc block (242) is pressured, the connecting end of the bent baffle (232) and the movable connecting rod (244) is pulled downward. At this time, the other end of the bent baffle (232) moves toward one side of the inclined plate (231).

3. The food sorting device based on visual detection according to claim 2, wherein: On the inner bottom wall of the arranging groove (22), a through groove (221) is formed. The through groove (221) provides an installation space for the cross arranging frame (222) in the area below the arranging groove (22). And the arranging groove (22) is in an inclined state, so that the blanking fruits have a thrust on the cross arranging frame (222). On the outer wall of one side of the cross arranging frame (222), a disc (223) is installed. On the disc (223), four groups of locking grooves (224) are evenly formed. The locking grooves (224) are embedded and locked by locking rods (225) which are movably connected to the inner wall of the arranging and positioning box (2) through pin shafts.

4. The food sorting device based on visual detection according to claim 3, wherein: On the bottom side of the inclined plate (231), a fixing plate (226) is installed. The fixing plate (226) is used for movably connecting the middle area of the unlocking plate (227), so that when one end of the unlocking plate (227) is pressured and moves upward, the other end of the unlocking plate (227) can touch and press the locking rod (225) downward. On the top of the unlocking plate (227), a fixing spring (228) is installed, and the other end of the fixing spring (228) is connected to the bottom of the inclined plate (231).

5. The food sorting device based on visual detection according to claim 4, wherein: An outer wall of the arrangement and positioning box (2) is provided with a transmission wheel (3), the transmission wheel (3) is in contact with a conveyor belt of the conveyor belt (1), an inner wall of the arrangement and positioning box (2) is provided with a driven wheel (31) through a shaft body, and the other end of the shaft body connecting the driven wheel (31) is further provided with a first gear (311).

6. The food sorting device based on visual detection according to claim 5, wherein: The inner wall of the arrangement and positioning box (2) is provided with a second gear (32) through a shaft body, and the other end of the shaft body connecting the second gear (32) is connected to a contact bump (321).

7. The food sorting device based on visual detection according to claim 6, characterized in that: The transmission wheel (3) and the driven wheel (31) are connected by a belt member for transmission, and the first gear (311) and the second gear (32) are in a meshed state.

8. The food sorting device based on visual detection according to claim 7, characterized in that: An inner bottom wall of the aggregate hopper (21) is provided with a rotating ring (211), an inner wall of the rotating ring (211) is provided with an inclined block (212), and a tooth groove (213) is formed in an outer wall of the rotating ring (211).

9. The food sorting device based on visual detection according to claim 8, wherein: A transmission assembly (4) is installed in the arrangement and positioning box (2), the transmission assembly (4) includes a first conical tooth (41) installed on a disc (223), the first conical tooth (41) is meshed with a conical tooth transmission rod (42), one end of the conical tooth transmission rod (42) is drivingly installed with a second conical tooth (43), the top of the second conical tooth (43) is connected with a transmission tooth (44) through a shaft body, and the transmission tooth (44) is meshed with the tooth groove (213).

10. The food sorting device based on visual detection according to claim 9, characterized in that: The conical tooth transmission rod (42) is composed of two groups of conical teeth and a rod body, so that the first conical tooth (41) can drive the second conical tooth (43) to rotate.

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