Fruit cup wheel rotation driving device and fruit and vegetable sorting machine

Abstract

The utility model relates to the field of fruit and vegetable sorting, in particular to a fruit cup wheel rotation driving device and a fruit and vegetable sorter, the fruit cup wheel rotation driving device comprises a rotation driving assembly, a mounting frame and a lifting assembly, the rotation driving assembly is used for abutting against a fruit cup wheel to drive the fruit cup wheel to rotate; the rotary driving assembly is mounted on the mounting frame; the lifting assembly comprises a base and a first driving assembly, the first driving assembly is mounted on the base, the output end of the first driving assembly is connected to the mounting frame, and the first driving assembly can drive the mounting frame and the rotary driving assembly to move up and down relative to the base in the vertical direction. The first driving assembly can drive the mounting frame and the rotary driving assembly to be away from the fruit cup, so that maintenance is facilitated. Moreover, the mounting frame and the rotary driving assembly can be detached from the output end of the first driving assembly together, so that equipment maintenance is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of fruit and vegetable sorting, and in particular to a fruit cup wheel rotation drive device and a fruit and vegetable sorting machine. Background Technology

[0002] As people pursue a higher quality of life, more and more people are demanding higher quality fruits and vegetables, making fruit and vegetable sorting an important technology.

[0003] In automated fruit and vegetable sorting, the fruits and vegetables need to be inspected and sorted. Before inspecting and sorting a large quantity of fruits and vegetables, they need to be separated into individual units for inspection. Generally, the fruits and vegetables are transferred to fruit cups, where they need to rotate to ensure their surface is fully inspected. Therefore, a fruit cup wheel rotation drive device is installed on the frame. When the drive device comes into contact with the fruit cup, it drives the fruit cup wheel to rotate, causing the fruits and vegetables on the cup to rotate.

[0004] The fruit cup wheel rotation drive is usually fixedly installed on the frame, and the fruit cup wheel rotation drive is located on the side of the transmission belt that conveys the fruit cups. However, it is difficult to repair when the fruit cup wheel rotation drive is damaged. Utility Model Content

[0005] The present invention aims to provide a fruit cup wheel rotation drive device and a fruit and vegetable sorting machine to solve the technical problem that it is difficult to repair the fruit cup wheel rotation drive device after it is damaged in the prior art.

[0006] To solve the above-mentioned technical problems, this utility model embodiment provides a fruit cup wheel rotation drive device, comprising:

[0007] A rotary drive assembly is used to abut against the fruit cup wheel to drive the fruit cup wheel to rotate;

[0008] Mounting bracket, the rotary drive assembly is mounted on the mounting bracket;

[0009] A lifting assembly includes a base and a first drive assembly. The first drive assembly is mounted on the base and its output end is connected to the mounting frame. The first drive assembly is capable of driving the mounting frame and the rotation drive assembly to move vertically up and down relative to the base.

[0010] With the above structure, the first drive assembly can drive the mounting bracket and the rotary drive assembly away from the fruit cup wheel, so that there is a large gap between the fruit cup wheel rotary drive device and the fruit cup wheel, which facilitates maintenance. Furthermore, the mounting bracket and the rotary drive assembly can be detached together from the output end of the first drive assembly for easy equipment maintenance.

[0011] In some embodiments, four lifting components are provided, and the four lifting components are respectively located at the four apex corners of a rectangle.

[0012] With the above structure, the four lifting components are arranged in a rectangular pattern to provide better support for the mounting frame and prevent the mounting frame from tilting during the lifting process.

[0013] In some embodiments, the fruit cup wheel rotation drive device further includes guide rails and rollers. One of the guide rails is connected to a corresponding base and is located on the side of the corresponding base away from the adjacent base. The length direction of each guide rail is arranged in the vertical direction. One roller abuts against a corresponding guide rail. The end of the mounting bracket facing the base is respectively connected to four rollers.

[0014] With the above structure, the guide rail can play a guiding role, and the mounting frame can move along the length of the guide rail when it is raised or lowered.

[0015] In some embodiments, the mounting bracket includes connecting rods and guide plates. Two connecting rods are arranged side by side with intervals between them. The two ends of the connecting rods facing the base are respectively connected to a corresponding first drive assembly. The two guide plates are parallel to each other and horizontally arranged. One guide plate is connected to one of the opposite sides of a connecting rod. Each guide plate has a guide groove. The rotary drive assembly is partially housed in the guide groove and abuts against the groove wall. The rotary drive assembly is supported on the guide plate.

[0016] With the above structure, the rotary drive assembly can be detached along the length of the guide groove for easy maintenance and replacement.

[0017] In some embodiments, receiving grooves are provided on opposite sides of the connecting rod, and the opposite ends of the guide plate are respectively received in the two receiving grooves.

[0018] With the above structure, the opposite sides of the rotary drive assembly abut against the guide plate and the connecting rod respectively to position the rotary drive assembly and ensure that the rotary drive assembly abuts against the fruit cup during operation.

[0019] In some embodiments, the rotary drive assembly includes a second drive assembly, a transmission assembly, a transmission roller, a frame, rotating wheels, a transmission belt, and a supporting square tube. The second drive assembly and the transmission assembly are both mounted on the supporting square tube. The second drive assembly is connected to the transmission assembly, and the transmission assembly is connected to the transmission roller. The frame is mounted on the supporting square tube. Two rotating wheels are spaced apart on the frame. The transmission belt is sleeved on the two rotating wheels, and one of the rotating wheels is sleeved on the transmission roller. The two supporting square tubes are parallel to each other and horizontally spaced apart. Each supporting square tube is received in a corresponding guide groove.

[0020] With the above structure, the supporting square tubes are strong and lightweight. The two supporting square tubes are parallel to each other and horizontally spaced, which can stably support the second drive component, transmission component, transmission roller, frame, rotating wheel and transmission belt, and also reduce the overall weight of the rotation drive component.

[0021] In some embodiments, the transmission assembly includes a first helical gear and a second helical gear, the first helical gear being sleeved on the output shaft of the second drive assembly, the second helical gear being sleeved on one end of the transmission roller, and the first helical gear and the second helical gear being meshed together; the rotation axis of the output shaft of the second drive assembly is perpendicular to the rotation axis of the transmission roller.

[0022] With the above structure, the rotation axis of the output shaft of the second drive assembly is perpendicular to the rotation axis of the transmission roller, so as to make the structure of the rotary drive assembly more compact and avoid the rotary drive assembly being too long in one direction.

[0023] In some embodiments, the fruit cup wheel rotation drive device further includes a support plate connected to the frame, the support plate being located between the two rotating wheels, and the side of the support plate facing away from the base abutting against the transmission belt.

[0024] With the above structure, the fruit cup wheel moves along the length of the transmission belt. When the fruit cup wheel moves to one side of the support plate, the support plate supports the fruit cup wheel and the transmission belt to ensure that the fruit cup wheel is in contact with the transmission belt so that the transmission belt drives the fruit cup wheel to rotate.

[0025] In some embodiments, the fruit cup wheel rotation drive device further includes a reset assembly connected to another rotating wheel. The reset assembly includes a connecting plate, a guide rod, a fixing member, a linkage plate, and an elastic member. One end of the connecting plate is connected to the other rotating wheel, and the other end of the connecting plate is connected to the guide rod. The fixing member is fixedly connected to the frame, and the guide rod passes through the fixing member. The end of the guide rod facing away from the connecting plate is fixed to the linkage plate. The linkage plate and the guide rod can slide together relative to the fixing member along the axial direction of the guide rod. The side of the linkage plate facing away from the guide rod abuts against one end of the elastic member, and the other end of the elastic member is connected to the frame.

[0026] With the above structure, the transmission belt may become loose after prolonged use, resulting in poor support. A reset component is included to maintain belt tension. When the transmission belt becomes loose, the elastic element drives the two rotating pulleys away from each other, thus tightening the transmission belt.

[0027] This utility model also provides a fruit and vegetable sorting machine, including the fruit cup wheel rotation drive device described in any of the above embodiments.

[0028] Compared with the prior art, in this embodiment of the invention, the first drive assembly can drive the mounting bracket and the rotary drive assembly away from the fruit cup wheel, so that there is a larger gap between the fruit cup wheel rotary drive device and the fruit cup wheel, which facilitates maintenance. Furthermore, the mounting bracket and the rotary drive assembly can be detached together from the output end of the first drive assembly for easy equipment maintenance. Attached Figure Description

[0029] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings do not constitute a limitation on scale.

[0030] Figure 1 This is a schematic diagram of the structure of a fruit cup wheel rotation drive device provided in one embodiment of the present invention;

[0031] Figure 2 yes Figure 1 A schematic diagram of the lifting assembly and mounting frame of the fruit cup wheel rotation drive device;

[0032] Figure 3 yes Figure 1 A schematic diagram of the rotating drive device for the fruit cup wheel from another angle;

[0033] Figure 4 yes Figure 3 Enlarged structural diagram of section A;

[0034] Figure 5 yes Figure 1 Exploded structural diagram of the rotary drive assembly, mounting bracket, and lifting assembly of the fruit cup wheel rotary drive device;

[0035] Figure 6 yes Figure 1 A schematic diagram of the rotary drive assembly of the fruit cup wheel rotary drive device.

[0036] The attached figures are labeled as follows:

[0037] 100. Fruit cup wheel rotation drive device; 10. Rotation drive assembly; 11. Second drive assembly; 12. Transmission assembly; 13. Transmission roller; 14. Frame; 15. Rotating wheel; 16. Transmission belt; 17. Support square tube; 20. Mounting frame; 21. Connecting rod; 211. Receiving groove; 22. Guide plate; 221. Guide groove; 30. Lifting assembly; 31. Base; 32. First drive assembly; 40. Guide rail; 50. Roller; 60. Support plate; 70. Reset assembly; 71. Connecting plate; 72. Guide rod; 73. Fixing component; 74. Linkage plate; 75. Elastic component. Detailed Implementation

[0038] To facilitate understanding of this utility model, the following section provides a more detailed description of it in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "connected" to another element, it can be directly on the other element, or one or more intermediate elements can exist between them. The terms "upper," "lower," "left," "right," "upper end," "lower end," "top," and "bottom," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention.

[0040] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of a fruit cup wheel rotation drive device provided in one embodiment of the present invention.

[0041] An embodiment of this utility model provides a fruit cup wheel rotation drive device 100, including a rotation drive component 10, a mounting frame 20, and a lifting component 30. The rotation drive component 10 is used to abut against the fruit cup wheel to drive the fruit cup wheel to rotate. The rotation drive component 10 is mounted on the mounting frame 20. The lifting component 30 includes a base 31 and a first drive component 32. The first drive component 32 is mounted on the base 31, and the output end of the first drive component 32 is connected to the mounting frame 20. The first drive component 32 can drive the mounting frame 20 and the rotation drive component 10 to move up and down in the vertical direction relative to the base 31.

[0042] Specifically, when the rotary drive assembly 10 requires maintenance, the first drive assembly 32 can drive the mounting bracket 20 and the rotary drive assembly 10 away from the fruit cup wheel, so that there is a large gap between the fruit cup wheel rotary drive device 100 and the fruit cup wheel, which facilitates maintenance. Moreover, the mounting bracket 20 and the rotary drive assembly 10 can be detached from the output end of the first drive assembly 32 together to facilitate equipment maintenance and replacement.

[0043] In this embodiment, the first drive component 32 may be a cylinder; in some other embodiments, the first drive component 32 may be a linear motor.

[0044] It should be noted that the fruit cup wheel abuts against the rotary drive assembly 10, which can drive the fruit cup wheel to rotate. When the fruit cup wheel rotates, the fruits and vegetables on it will rotate. After the fruits and vegetables rotate, it is convenient to conduct a comprehensive inspection of the surface of the fruits and vegetables, and it can also prevent the fruits and vegetables from piling up.

[0045] In one embodiment, four lifting components 30 are provided, and the four lifting components 30 are respectively located at the four apex corners of a rectangle.

[0046] Specifically, the four lifting components 30 are arranged in a rectangular pattern to provide better support for the mounting frame 20 and prevent the mounting frame 20 from tilting during lifting. They also support the rotary drive component 10 so that after long-term use, the rotary drive component 10 can still be supported against the fruit cup wheel after being lifted.

[0047] In one embodiment, the fruit cup wheel rotation drive device 100 further includes a guide rail 40 and rollers 50. A guide rail 40 is connected to a corresponding base 31 and is located on the side of the corresponding base 31 away from the adjacent base 31. The length direction of each guide rail 40 is arranged in the vertical direction. A roller 50 abuts against a corresponding guide rail 40. The end of the mounting bracket 20 facing the base 31 is respectively connected to four rollers 50.

[0048] Specifically, the guide rail 40 serves as a guide, allowing the mounting frame 20 to move along the length of the guide rail 40 during lifting and lowering. A roller 50 is connected to each of the four corners of the mounting frame 20, and the rollers 50 abut against the guide rail 40 to ensure smoother movement of the mounting frame 20 during lifting and lowering without causing wobbling.

[0049] See Figure 2 , Figure 3 and Figure 4 , Figure 2 yes Figure 1 A schematic diagram of the lifting assembly and mounting frame of the fruit cup wheel rotation drive device; Figure 3 yes Figure 1 A schematic diagram of the rotating drive device for the fruit cup wheel from another angle; Figure 4 yes Figure 3 Enlarged structural diagram of part A.

[0050] In one embodiment, the mounting bracket 20 includes connecting rods 21 and guide plates 22. There are two connecting rods 21 arranged side by side with intervals. The two ends of the connecting rods 21 facing the base 31 are respectively connected to a corresponding first drive assembly 32. The two guide plates 22 are parallel to each other and horizontally arranged. One guide plate 22 is connected to the opposite sides of one connecting rod 21. Each guide plate 22 has a guide groove 221. The rotary drive assembly 10 is partially housed in the guide groove 221 and partially abuts against the groove wall of the guide groove 221. The rotary drive assembly 10 is supported on the guide plate 22.

[0051] Specifically, the bottom of the rotary drive assembly 10 is fixed to the guide plate 22 by screws. When it is necessary to remove the rotary drive assembly 10 from the mounting bracket 20, the screws are first removed, and then the rotary drive assembly 10 is moved along the guide groove 221 so that the rotary drive assembly 10 is removed from the mounting bracket 20, thereby facilitating the maintenance of the rotary drive assembly 10.

[0052] In one embodiment, the connecting rod 21 has receiving grooves 211 on its opposite sides, and the guide plate 22 is respectively received in the two receiving grooves 211 at its opposite ends.

[0053] Specifically, the guide plate 22 is an L-shaped baffle with an opening facing the connecting rod 21, so that the opposite sides of the rotary drive assembly 10 abut against the guide plate 22 and the connecting rod 21 respectively, in order to position the rotary drive assembly 10 and ensure that the rotary drive assembly 10 abuts against the fruit cup during operation.

[0054] In some embodiments, the sidewall of the guide plate 22 away from the connecting rod 21 abuts against the guide rail 40; the opposite sides of the guide plate 22 abut against the sidewalls of the guide rail 40 and the connecting rod 21 respectively, so as to tighten the guide plate 22.

[0055] See Figure 1 and Figure 5 , Figure 5 yes Figure 1 Exploded structural diagram of the rotary drive assembly, mounting bracket and lifting assembly of the fruit cup wheel rotary drive device.

[0056] In one embodiment, the rotary drive assembly 10 includes a second drive assembly 11, a transmission assembly 12, a transmission roller 13, a frame 14, a rotating wheel 15, a transmission belt 16, and a support square tube 17. The second drive assembly 11 and the transmission assembly 12 are both mounted on the support square tube 17. The second drive assembly 11 is connected to the transmission assembly 12, and the transmission assembly 12 is connected to the transmission roller 13. The frame 14 is mounted on the support square tube 17. Two rotating wheels 15 are spaced apart on the frame 14. The transmission belt 16 is sleeved on the two rotating wheels 15. One of the rotating wheels 15 is sleeved on the transmission roller 13. The two support square tubes 17 are parallel to each other and horizontally spaced apart. Each support square tube 17 is received in a corresponding guide groove 221.

[0057] Specifically, the supporting square tube 17 is a hollow tube with high strength and light weight. The two supporting square tubes 17 are parallel to each other and horizontally spaced apart, which can stably support the second drive assembly 11, transmission assembly 12, transmission roller 13, frame 14, rotating wheel 15 and transmission belt 16, and also reduce the overall weight of the rotation drive assembly 10.

[0058] In this embodiment, the second drive assembly 11 and the transmission assembly 12 drive the transmission roller 13 together, so that the transmission roller 13 rotates. The transmission roller 13 drives a rotating wheel 15 to rotate. The rotation of the rotating wheel 15 drives the transmission belt 16 to move. The fruit cup wheel abuts against the transmission belt 16, so that the fruit cup wheel rotates and the fruits and vegetables on the fruit cup wheel also rotate.

[0059] In this embodiment, the second drive component 11 may be a servo motor, and the transmission component 12 may be a gear set, belt drive component, etc.

[0060] In one embodiment, the transmission assembly 12 includes a first helical gear (not shown) and a second helical gear (not shown). The first helical gear is sleeved on the output shaft of the second drive assembly 11, and the second helical gear is sleeved on one end of the transmission roller 13. The first helical gear and the second helical gear are meshed and connected. The rotation axis of the output shaft of the second drive assembly 11 is perpendicular to the rotation axis of the transmission roller 13.

[0061] Specifically, the rotation axis of the output shaft of the second drive assembly 11 is perpendicular to the rotation axis of the transmission roller 13, so as to make the structure of the rotary drive assembly 10 more compact and avoid the rotary drive assembly 10 being too long in one direction.

[0062] See Figure 1 and Figure 6 , Figure 6 yes Figure 1 A schematic diagram of the rotating drive component.

[0063] In one embodiment, the fruit cup wheel rotation drive device 100 further includes a support plate 60, which is connected to the frame 14 and located between two rotating wheels 15. The side of the support plate 60 facing away from the base 31 abuts against the transmission belt 16.

[0064] Specifically, the fruit cup wheel moves along the length of the transmission belt 16. When the fruit cup wheel moves to one side of the support plate 60, the support plate 60 supports the fruit cup wheel and the transmission belt 16 to ensure that the fruit cup wheel abuts against the transmission belt 16 so that the transmission belt 16 drives the fruit cup wheel to rotate.

[0065] Furthermore, in this embodiment, the opposite sides of the support plate 60 are inclined toward the base 31. This arrangement serves to guide the fruit cup wheel, so that the fruit cup wheel can move onto the support plate 60 and avoid the fruit cup wheel from lingering on the opposite sides of the support plate 60, thus reducing efficiency.

[0066] In one embodiment, the fruit cup wheel rotation drive device 100 further includes a reset assembly 70, which is connected to another rotating wheel 15. The reset assembly 70 includes a connecting plate 71, a guide rod 72, a fixing member 73, a linkage plate 74, and an elastic member 75. One end of the connecting plate 71 is connected to the other rotating wheel 15, and the other end of the connecting plate 71 is connected to the guide rod 72. The fixing member 73 is fixedly connected to the frame 14, and the guide rod 72 passes through the fixing member 73. The end of the guide rod 72 away from the connecting plate 71 is fixed to the linkage plate 74. The linkage plate 74 and the guide rod 72 can slide together relative to the fixing member 73 along the axial direction of the guide rod 72. The side of the linkage plate 74 away from the guide rod 72 abuts against one end of the elastic member 75, and the other end of the elastic member 75 is connected to the frame 14.

[0067] Specifically, after prolonged use, the transmission belt 16 may become loose, resulting in poor support. A reset component 70 is provided to ensure the tension of the transmission belt 16. When the transmission belt 16 becomes loose, the elastic element 75 drives the two rotating pulleys 15 away from each other, thus tightening the transmission belt 16.

[0068] This utility model also provides a fruit and vegetable sorting machine, including the fruit cup wheel rotation drive device 100 described in the above embodiment.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail; although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fruit cup wheel rotation drive device characterized by comprising: include: A rotary drive assembly is used to abut against the fruit cup wheel to drive the fruit cup wheel to rotate; Mounting bracket, the rotary drive assembly is mounted on the mounting bracket; A lifting assembly includes a base and a first drive assembly. The first drive assembly is mounted on the base and its output end is connected to the mounting frame. The first drive assembly is capable of driving the mounting frame and the rotation drive assembly to move vertically up and down relative to the base.

2. The cup wheel rotating drive apparatus according to claim 1, wherein The lifting assembly is provided in four parts, and the four lifting assemblies are respectively located at the four vertices of a rectangle.

3. The cup wheel rotating drive of claim 2, wherein It also includes guide rails and rollers, one of the guide rails being connected to a corresponding base and located on the side of the corresponding base away from the adjacent base, and the length direction of each guide rail being arranged in the vertical direction; one roller abutting against a corresponding guide rail, and the end of the mounting bracket facing the base being connected to four rollers respectively.

4. The cup wheel rotating drive apparatus according to claim 2, wherein The mounting bracket includes connecting rods and guide plates. There are two connecting rods arranged side by side with intervals. The two ends of the connecting rods facing the base are respectively connected to a corresponding first drive assembly. The two guide plates are parallel to each other and horizontally arranged. One guide plate is connected to one of the opposite sides of a connecting rod. Each guide plate has a guide groove. The rotary drive assembly is partially housed in the guide groove and abuts against the groove wall. The rotary drive assembly is supported on the guide plate.

5. The cup wheel rotating drive of claim 4 wherein, The connecting rod has receiving grooves on its opposite sides, and the guide plate is received in the two receiving grooves at its opposite ends.

6. The cup wheel rotating drive of claim 4 wherein, The rotary drive assembly includes a second drive assembly, a transmission assembly, a transmission roller, a frame, rotating wheels, a transmission belt, and a supporting square tube. The second drive assembly and the transmission assembly are both mounted on the supporting square tube. The second drive assembly is connected to the transmission assembly, and the transmission assembly is connected to the transmission roller. The frame is mounted on the supporting square tube. Two rotating wheels are spaced apart on the frame. The transmission belt is sleeved on the two rotating wheels, and one of the rotating wheels is sleeved on the transmission roller. The two supporting square tubes are parallel to each other and horizontally spaced apart. Each supporting square tube is received in a corresponding guide groove.

7. The cup wheel rotating drive device according to claim 6, characterized in that The transmission assembly includes a first helical gear and a second helical gear. The first helical gear is sleeved on the output shaft of the second drive assembly, and the second helical gear is sleeved on one end of the transmission roller. The first helical gear and the second helical gear are meshed together. The rotation axis of the output shaft of the second drive assembly is perpendicular to the rotation axis of the transmission roller.

8. The cup wheel rotating drive of claim 6 wherein, It also includes a support plate connected to the frame, the support plate being located between the two rotating wheels, and the side of the support plate facing away from the base abutting against the transmission belt.

9. The cup wheel rotating drive of claim 6 wherein, The reset assembly is connected to the other rotating wheel, and comprises a connecting plate, a guide rod, a fixing member, a linkage plate and an elastic member.

10. A fruit and vegetable sorting machine, characterized in that, The fruit cup rotating drive device comprises the fruit cup rotating drive device according to any one of claims 1 to 9.

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