Test device and test method for a charging gun

Abstract

The application relates to the technical field of testing devices, and discloses a testing device for a charging gun and a testing method, the testing device for the charging gun comprising a rack, a socket, a rotating mechanism, a driving mechanism, a containing cup and a control device; the driving mechanism can be switched between a plugging state and an immersion state through the rotating mechanism; the socket and the containing cup are arranged on the rack and cooperate with the driving mechanism to carry out multiple plugging test experiments of the charging gun, plugging test experiments under the condition that the tested solution is coated, that is, plugging simulation test experiments under the special environment of salt water, acid rain or turbid water; and the multiple plugging test experiments of the charging gun and the plugging test under the condition that the tested solution is coated are combined during the test, so that the plugging action of the charging gun can be simulated, the working environment of the charging gun can be simulated, and the accuracy of the measurement data is further ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of testing devices, in particular to a testing device for a charging gun and a testing method. BACKGROUND

[0002] At present, in order to ensure the quality of the charging gun and still be able to be normally used after long-term use, the life test is usually carried out. However, the existing testing device can only simulate the plugging and unplugging action of the charging gun and cannot simulate the working environment of the charging gun, so that there is a deviation between the data obtained by the testing device and the actual data, which causes the quality problem of the charging gun. SUMMARY

[0003] The present application aims to provide a testing device for a charging gun and a testing method, which can simulate the plugging and unplugging action of the charging gun and simulate the working environment of the charging gun, so as to ensure the accuracy of the measured data.

[0004] In order to achieve the above-mentioned purpose, the present application provides a testing device for a charging gun, comprising a rack, a socket, a rotating mechanism, a driving mechanism, a containing cup and a control device; the socket, the containing cup and the rotating mechanism are all arranged on the rack, and the socket and the rotating mechanism are arranged correspondingly and spaced apart along the length direction of the rack, the containing mechanism is located below the rotating mechanism, the side of the socket facing the rotating mechanism is provided with a slot, the containing cup is used for placing a test solution, and the cup opening of the containing cup is arranged to face the rotating mechanism, the slot and the cup opening are all matched with the charging gun; the driving mechanism is arranged on the rotating mechanism, the driving mechanism is used for connecting with the charging gun and driving the charging gun to move, the rotating mechanism is used for controlling the rotation of the driving mechanism, so that the driving mechanism is switched between the plugging and unplugging state and the soaking state, when the driving mechanism is in the plugging and unplugging state, the charging gun arranged on the driving mechanism corresponds to the slot, the driving mechanism can drive the charging gun to move towards the slot, when the driving mechanism is in the soaking state, the charging gun arranged on the driving mechanism corresponds to the cup opening, and the driving mechanism can drive the charging gun to move towards the cup opening; the socket, the rotating mechanism and the driving mechanism are respectively electrically connected with the control device.

[0005] Optionally, it further comprises a conveying mechanism and a plurality of containing cups, the conveying mechanism is arranged on the rack and located below the rotating mechanism, the conveying mechanism extends along the length direction of the rack, and a plurality of containing cups are arranged on the conveying mechanism and spaced apart, the conveying mechanism is used for conveying the containing cups to move along the length direction of the rack.

[0006] Optionally, the charging gun comprises a gun body and a handle arranged on the gun body, and further comprises a clamping mechanism, the clamping mechanism comprises a docking plate, a first clamping plate, a second clamping plate and a fastener, one side of the docking plate is connected with the driving mechanism, the first clamping plate is arranged on the other side of the docking plate, the second clamping plate is installed on the first clamping plate through the fastener, and a gap is left between the first clamping plate and the second clamping plate, and the gap is used for clamping the handle.

[0007] Optionally, an included angle between an extension direction of the gun body and an extension direction of the handle is A, the docking plate comprises a first docking part and a second docking part, one side of the first docking part is detachably connected with the driving mechanism, the second docking part is arranged on the other side of the first docking part, an included angle between an extension direction of the first docking part and an extension direction of the second docking part is B, the first clamping plate is arranged on one side of the second docking part facing the handle, and an included angle between an extension direction of the first clamping plate and an extension direction of the second docking part is C, A+B+C=270°.

[0008] Optionally, the rotating mechanism comprises a rotating motor, the rotating motor is arranged on the rack, the rotating motor has an output end extending along the width direction of the rack, and the driving mechanism is arranged on the output end.

[0009] Optionally, the rotating mechanism further comprises a transmission gear, a toothed plate and a rotating shaft, the transmission gear is sleeved on the output end, the rotating shaft extends along the width direction of the rack and is rotatably connected with the rack, the toothed plate is sleeved on the rotating shaft and is in a fan shape, an outer circumferential side surface of the toothed plate has a rack, the rack is engaged with the transmission gear, and the driving mechanism is arranged on one side of the toothed plate in the width direction of the rack.

[0010] Optionally, the rotating mechanism further comprises a support plate, the support plate comprises a plate body and a first extension part, one side of the plate body is connected with the toothed plate, the first extension part is arranged on the other side of the plate body and extends along the width direction of the rack, and the driving mechanism is arranged on one side of the first extension part away from the rotating shaft.

[0011] Optionally, a plurality of driving mechanisms are arranged on the toothed plate and are spaced apart along the rotating direction of the toothed plate.

[0012] Optionally, the driving mechanism comprises a driving cylinder and a connecting plate, the connecting plate is arranged on a driving end of the driving cylinder, and the connecting plate is used for being connected with the charging gun.

[0013] In order to achieve the same purpose, the application further provides a testing method for a charging gun, which adopts the testing device for a charging gun as described above, and comprises the following steps:

[0014] S1, install the charging gun on the driving mechanism;

[0015] S2, control the driving mechanism to rotate to the plug-in state through the rotating mechanism, and drive the charging gun to be inserted into the slot and then be pulled out of the slot through the driving mechanism;

[0016] S3, repeat the step S2 m times;

[0017] S4, control the driving mechanism to rotate to the soaking state through the rotating mechanism, and drive the charging gun to be inserted into the cup opening and soaked for a period of time, and then be pulled out of the cup opening and stand for a period of time through the driving mechanism;

[0018] S5, control the driving mechanism to rotate to the plug-in state through the rotating mechanism, and drive the charging gun to be inserted into the slot and then be pulled out of the slot through the driving mechanism;

[0019] S6, repeat the step S5 n times;

[0020] S7, drive the charging gun to be inserted into the slot through the driving mechanism, and power on the socket and the charging gun for a preset time;

[0021] S8, power off the socket, drive the charging gun to be pulled out of the slot through the driving mechanism, and repeat the steps S2-S7.

[0022] Compared with the prior art, the test device and test method for the charging gun have the beneficial effects that the rotating mechanism is arranged to enable the driving mechanism to switch between the plug-in state and the soaking state, and the socket and the accommodating cup are arranged on the rack to cooperate with the driving mechanism to perform the multiple plug-in test experiment of the charging gun and the plug-in test experiment in the case of being covered by the tested solution, i.e. the plug-in simulation test experiment in the special environment of salt water, acid rain or turbid water, and the multiple plug-in test experiment of the charging gun and the plug-in test experiment in the case of being covered by the tested solution are combined during the test, so that the plug-in action of the charging gun and the working environment of the charging gun can be simulated, and the accuracy of the measurement data is further ensured. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic view of the test device for the charging gun according to the embodiment of the application;

[0024] Figure 2 is a connection structural schematic view of the conveying mechanism and the accommodating cup according to the embodiment of the application;

[0025] Figure 3 is a schematic view of the connection structure of the clamping mechanism and the charging gun of the embodiment of the present application;

[0026] Figure 4 is a schematic view of the structure of the rotating mechanism and the driving mechanism of the embodiment of the present application;

[0027] Figure 5 is a schematic view of the connection structure of the rotating mechanism and the driving mechanism of the embodiment of the present application;

[0028] Figure 6 is a flow chart of the testing method for the charging gun of the embodiment of the present application.

[0029] In the figure, 1 is a rack, 2 is a socket, 3 is a rotating mechanism, 31 is a rotating motor, 32 is a transmission gear, 33 is a toothed plate, 331 is a rack, 34 is a rotating shaft, 35 is a support plate, 351 is a plate body, 352 is a first extension, 4 is a driving mechanism, 41 is a driving cylinder, 42 is a connecting plate, 5 is a containing cup, 6 is a control device, 7 is a charging gun, 71 is a gun body, 72 is a handle, 8 is a conveying mechanism, 81 is a conveying track, 82 is a fixing plate, 83 is a guide rail, 9 is a clamping mechanism, 91 is a butt joint plate, 911 is a first butt joint part, 912 is a second butt joint part, 92 is a first clamping plate, 93 is a second clamping plate, and 94 is a gap. DETAILED DESCRIPTION

[0030] The specific embodiments of the present application will be further described in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0031] In the description of the present application, it should be understood that the terms "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0032] In addition, the terms "first", "second", "third", etc. are only used for description purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0033] As Figure 1As shown, a testing device for a charging gun 7 according to an embodiment of the present invention includes: a frame 1, a socket 2, a rotating mechanism 3, a driving mechanism 4, a container 5, and a control device 6; the socket 2, the container 5, and the rotating mechanism 3 are all disposed on the frame 1, and the socket 2 and the rotating mechanism 3 are spaced apart and corresponding to each other along the length direction of the frame 1; the container mechanism is located below the rotating mechanism 3; the socket 2 has a slot on the side facing the rotating mechanism 3; the container 5 is used to hold the test solution, and the mouth of the container 5 is set facing the rotating mechanism 3; both the slot and the mouth of the container are adapted to the charging gun 7; the driving mechanism 4 is disposed on the rotating mechanism 3. The drive mechanism 4 is used to connect to the charging gun 7 and drive the charging gun 7 to move. The rotation mechanism 3 is used to control the rotation of the drive mechanism 4, so that the drive mechanism 4 can switch between the plugging / unplugging state and the soaking state. When the drive mechanism 4 is in the plugging / unplugging state, the charging gun 7 located on the drive mechanism 4 corresponds to the slot, and the drive mechanism 4 can drive the charging gun 7 to move toward the slot. When the drive mechanism 4 is in the soaking state, the charging gun 7 located on the drive mechanism 4 corresponds to the cup mouth, and the drive mechanism 4 can drive the charging gun 7 to move toward the cup mouth. The socket 2, the rotation mechanism 3, and the drive mechanism 4 are electrically connected to the control device 6 respectively.

[0034] Based on the above scheme, this application sets up a rotating mechanism 3 so that the driving mechanism 4 can switch between the insertion / removal state and the immersion state. Furthermore, by setting up a socket 2 and a container cup 5 on the frame 1 to cooperate with the driving mechanism 4, multiple insertion / removal tests of the charging gun 7 can be conducted, as well as insertion / removal tests under the condition of being covered by the test solution, i.e., insertion / removal tests under special environments such as salt water, acid rain, and turbid water. This not only simulates the insertion / removal action of the charging gun 7, but also simulates the working environment of the charging gun 7, thereby ensuring the accuracy of the measurement data.

[0035] like Figure 2 As shown, in order to facilitate the insertion and removal test of the charging gun 7 being coated with different test solutions, a conveying mechanism 8 and multiple containers 5 are also included. The conveying mechanism 8 is located on the frame 1 and below the rotating mechanism 3. The conveying mechanism 8 extends along the length of the frame 1. Multiple containers 5 are spaced apart on the conveying mechanism 8. The conveying mechanism 8 is used to transport the containers 5 along the length of the frame 1. The multiple containers 5 are used to hold different types of test solutions. The types of test solutions are salt water simulation solution, acid rain simulation solution, or turbid water simulation solution.

[0036] In some embodiments, for ease of use, the conveying mechanism 8 includes a conveying track 81, a fixed plate 82, and a guide rail 83. The guide rail 83 is disposed on the frame 1, the fixed plate 82 is slidably connected to the guide rail 83, the conveying track 81 is disposed on the guide rail 83 and connected to the fixed plate 82, the conveying track 81 is used to drive the fixed plate 82 to slide along the guide rail 83, and a plurality of accommodating cups 5 are spaced apart on the fixed plate 82.

[0037] likeFigure 3 As shown, in order to facilitate use and improve the adaptability of the device, the charging gun 7 comprises a gun body 71 and a handle 72 arranged on the gun body 71, and further comprises a clamping mechanism 9, which comprises a docking plate 91, a first clamping plate 92, a second clamping plate 93 and a fastener. One side of the docking plate 91 is connected with the driving mechanism 4, the first clamping plate 92 is arranged on the other side of the docking plate 91, the second clamping plate 93 is installed on the first clamping plate 92 through the fastener, and a gap 94 is left between the first clamping plate 92 and the second clamping plate 93. The gap 94 is used for clamping the handle 72, and the gap 94 between the first clamping plate 92 and the second clamping plate 93 is controlled through the fastener, so that the size of the gap 94 can be adjusted according to the specification of the charging gun 7, thereby improving the adaptability of the device.

[0038] Optionally, in order to facilitate use, the included angle between the extension direction of the gun body 71 and the extension direction of the handle 72 is A, the docking plate 91 comprises a first docking portion 911 and a second docking portion 912, one side of the first docking portion 911 is detachably connected with the driving mechanism 4, the second docking portion 912 is arranged on the other side of the first docking portion 911, the included angle between the extension direction of the first docking portion 911 and the extension direction of the second docking portion 912 is B, the first clamping plate 92 is arranged on the side of the second docking portion 912 facing the handle 72, and the included angle between the extension direction of the first clamping plate 92 and the extension direction of the second docking portion 912 is C, A+B+C=270°, so that the extension direction of the gun body 71 is perpendicular to the extension direction of the first docking portion 911, thereby facilitating installation and use. In addition, according to the specification of the charging gun 7, a docking plate 91 with different angles can be selected, so that the extension direction of the gun body 71 of the charging gun 7 of various specifications can be perpendicular to the extension direction of the first docking portion 911, thereby ensuring that the charging gun 7 can be inserted into the slot or cup, and improving the adaptability to different charging guns 7.

[0039] As shown in Figure 4 and Figure 5 shown, in order to facilitate use, the rotating mechanism 3 comprises a rotating motor 31, and the rotating motor 31 is arranged on the rack 1. The rotating motor 31 has an output end extending along the width direction of the rack 1, and the driving mechanism 4 is arranged on the output end.

[0040] As shown in Figure 4 and Figure 5As shown in the drawings, in order to facilitate the control of the rotation range of the driving mechanism 4, the rotating mechanism 3 further comprises a transmission gear 32, a toothed plate 33 and a rotating shaft 34, the transmission gear 32 is sleeved on the output end, the rotating shaft 34 extends along the width direction of the rack 1 and is rotatably connected to the rack 1, the toothed plate 33 is sleeved on the rotating shaft 34 and is fan-shaped, the outer circumferential side of the toothed plate 33 is provided with a rack 331 which is engaged with the transmission gear, the driving mechanism 4 is arranged on one side of the toothed plate 33 in the width direction of the rack 1, and the length of the rack 331 is used to control the rotation range of the driving mechanism 4, thereby avoiding the deviation of the driving mechanism 4 from the slot or the cup.

[0041] As shown in the drawings, Figure 4 and Figure 5 in order to ensure the connection strength of the rotating mechanism 3 and the driving mechanism 4, the rotating mechanism 3 further comprises a support plate 35, the support plate 35 comprises a plate body 351 and a first extension 352, one side of the plate body 351 is connected to the toothed plate 33, and the first extension 352 is arranged on the other side of the plate body 351 and extends along the width direction of the rack 1, and the driving mechanism 4 is arranged on the side of the first extension 352 away from the rotating shaft 34.

[0042] As shown in the drawings, Figure 1 in order to facilitate the repeated test experiment, a plurality of driving mechanisms 4 are arranged on the toothed plate 33 and are spaced apart along the rotation direction of the toothed plate 33.

[0043] As shown in the drawings, Figure 4 and Figure 5 in order to facilitate the use, the driving mechanism 4 comprises a driving cylinder 41 and a connecting plate 42, the connecting plate 42 is arranged on the driving end of the driving cylinder 41, and the connecting plate 42 is used to be connected with the charging gun 7.

[0044] As shown in the drawings, Figure 6 a test method for the charging gun 7 according to the embodiment of the present application, which adopts the test device for the charging gun 7 as described above, comprises the following steps:

[0045] S1, installing the charging gun 7 on the driving mechanism 4;

[0046] S2, controlling the driving mechanism 4 to rotate to the plug-in state by the rotating mechanism 3, and driving the charging gun 7 to be inserted into the slot and then driven to be pulled out of the slot by the driving mechanism 4;

[0047] S3, repeating step S2 m times;

[0048] S4, controlling the driving mechanism 4 to rotate to the soaking state by the rotating mechanism 3, and driving the charging gun 7 to be inserted into the cup and soaked for a period of time and then driven to be pulled out of the cup and stand for a period of time by the driving mechanism 4;

[0049] S5, the driving mechanism 4 is controlled to rotate to the plug-in state by the rotating mechanism 3, and the charging gun 7 is first inserted into the slot and then pulled out of the slot by the driving mechanism 4;

[0050] S6, repeating step S5 n times;

[0051] S7, the charging gun 7 is inserted into the slot by the driving mechanism 4, and the socket 2 and the charging gun 7 are powered for a preset time;

[0052] S8, the socket 2 is powered off, the charging gun 7 is pulled out of the slot by the driving mechanism 4, and steps S2-S7 are repeated.

[0053] Based on the above scheme, the present application combines the multiple plug-in and pull-out test experiments of the charging gun 7 with the plug-in and pull-out test in the case of being covered by the tested solution, so that the use state of the charging gun 7 can be more truly simulated, that is, the plug-in and pull-out are cycled between normal multiple plug-in and pull-out and special environment, and the data measured is ensured to be accurate.

[0054] In some embodiments, the cup body of the accommodating cup 5 is larger than the length of the connecting end of the charging gun 7, so that the connecting end of the charging gun 7 can be completely soaked.

[0055] In summary, the embodiment of the present application provides a testing device and testing method for the charging gun 7, which can switch between the plug-in and pull-out state and the soaking state by setting the rotating mechanism 3, and can cooperate with the driving mechanism 4 by setting the socket 2 and the accommodating cup 5 on the rack 1 to perform multiple plug-in and pull-out test experiments of the charging gun 7 and plug-in and pull-out test experiments in the case of being covered by the tested solution, that is, plug-in and pull-out test experiments in the special environment of salt water, acid rain and turbid water, and the present application combines the multiple plug-in and pull-out test experiments of the charging gun 7 with the plug-in and pull-out test in the case of being covered by the tested solution when testing, so that the plug-in and pull-out action of the charging gun 7 can be simulated, and the working environment of the charging gun 7 can be simulated, and the data measured is ensured to be accurate.

[0056] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make several improvements and replacements without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A testing device for a charging gun, characterized in that, The utility model relates to a kind of test solution immersion device, including: Rack, socket, rotating mechanism, drive mechanism, containing cup and control device; The socket, the containing cup and the rotating mechanism are all arranged in the rack, and the socket and the rotating mechanism are correspondingly arranged at intervals along the length direction of the rack, the containing cup is located below the rotating mechanism, the socket has a slot towards the side of the rotating mechanism, the containing cup is used to place test solution, and the cup mouth of the containing cup is arranged towards the rotating mechanism, the slot and the cup mouth are all matched with charging gun; The drive mechanism is arranged in the rotating mechanism, and the drive mechanism is used to be connected with the charging gun and drive the charging gun to move, the rotating mechanism is used to control the rotation of the drive mechanism, so that the drive mechanism is switched between plug-in state and immersion state, when the drive mechanism is in the plug-in state, the charging gun arranged in the drive mechanism corresponds to the slot, and the drive mechanism can drive the charging gun to move towards the slot, when the drive mechanism is in the immersion state, the charging gun arranged in the drive mechanism corresponds to the cup mouth, and the drive mechanism can drive the charging gun to move towards the cup mouth; The socket, the rotating mechanism and the drive mechanism are respectively electrically connected with the control device; Further comprising a conveying mechanism and a plurality of containing cups, the conveying mechanism is arranged in the rack and located below the rotating mechanism, the conveying mechanism extends along the length direction of the rack, and a plurality of containing cups are arranged at intervals in the conveying mechanism, the conveying mechanism is used to convey the containing cups to move along the length direction of the rack; The charging gun comprises a gun body and a handle arranged on the gun body, and further comprises a clamping mechanism, the clamping mechanism comprises a docking plate, a first clamping plate, a second clamping plate and a fastener, one side of the docking plate is connected with the drive mechanism, the first clamping plate is arranged on the other side of the docking plate, the second clamping plate is mounted on the first clamping plate through the fastener, and a gap is left between the first clamping plate and the second clamping plate, and the gap is used to clamp the handle.

2. The test device for a charging gun according to claim 1, wherein an included angle between an extension direction of the gun body and an extension direction of the handle is A, and The docking plate comprises a first docking portion and a second docking portion, one side of the first docking portion is detachably connected with the drive mechanism, the second docking portion is arranged on the other side of the first docking portion, the included angle between the extension direction of the first docking portion and the extension direction of the second docking portion is B, the first clamping plate is arranged on the side of the second docking portion towards the handle, and the included angle between the extension direction of the first clamping plate and the extension direction of the second docking portion is C, A+B+C=270°.

3. The testing device for a charging gun according to claim 1, characterized in that, The rotating mechanism comprises a rotating motor, the rotating motor is arranged in the rack, the rotating motor has an output end extending along the width direction of the rack, and the drive mechanism is arranged on the output end.

4. The testing device for a charging gun according to claim 3, characterized in that, The rotating mechanism further comprises a transmission gear, a toothed plate and a rotating shaft, the gear is sleeved on the output end, the rotating shaft extends along the width direction of the frame and is rotatably connected to the frame, the toothed plate is sleeved on the rotating shaft and has a fan shape, the outer circumferential side of the toothed plate has a rack, the rack is engaged with the gear, and the driving mechanism is arranged on one side of the toothed plate in the width direction of the frame.

5. The testing device for a charging gun according to claim 4, characterized in that, The rotating mechanism further comprises a support plate, the support plate comprises a plate body and a first extension, one side of the plate body is connected to the toothed plate, the first extension is arranged on the other side of the plate body and extends along the width direction of the frame, and the driving mechanism is arranged on the side of the first extension away from the rotating shaft.

6. The testing device for a charging gun according to claim 4, characterized in that, A plurality of the driving mechanisms are arranged on the toothed plate and are spaced apart in the rotating direction of the toothed plate.

7. The testing device for a charging gun according to claim 1, characterized in that, The driving mechanism comprises a driving cylinder and a connecting plate, the connecting plate is arranged on the driving end of the driving cylinder, and the connecting plate is used for being connected with the charging gun.

8. A method of testing a charging gun, characterized by, The test device for the charging gun is used, and the following steps are included: S1, the charging gun is installed on the driving mechanism; S2, the driving mechanism is controlled to rotate to the plug-in state by the rotating mechanism, the charging gun is first driven to be inserted into the insertion slot by the driving mechanism, and then the charging gun is driven to be pulled out of the insertion slot; S3, the step S2 is repeated m times; S4, the driving mechanism is controlled to rotate to the soaking state by the rotating mechanism, the charging gun is first driven to be inserted into the cup opening and soaked for a period of time by the driving mechanism, and then the charging gun is driven to be pulled out of the cup opening and left to stand for a period of time; S5, the driving mechanism is controlled to rotate to the plug-in state by the rotating mechanism, the charging gun is first driven to be inserted into the insertion slot by the driving mechanism, and then the charging gun is driven to be pulled out of the insertion slot; S6, the step S5 is repeated n times; S7, the charging gun is driven to be inserted into the insertion slot by the driving mechanism, and the plug and the charging gun are powered on for a preset time; S8, the plug is powered off, the charging gun is driven to be pulled out of the insertion slot by the driving mechanism, and the steps S2-S7 are repeated.

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