Stable glue spraying device for wine box forming

Abstract

The utility model relates to the technical field of wine box packaging and processing devices, and discloses a stable glue spraying device for wine box forming, which comprises a processing table, supporting plates are fixedly connected to the left side and the right side of the top end of the processing table, and a threaded push rod is connected to the right end of the supporting plate on the left side through a telescopic assembly. A bidirectional motor is fixedly connected to the right side, corresponding to the right supporting plate, of the top end of the machining table, the left side driving end of the bidirectional motor penetrates through the outer wall of the right supporting plate and is fixedly connected with a rotating shaft, and clamping assemblies are installed at the opposite ends of the rotating shaft and the threaded push rod correspondingly; the right driving end of the bidirectional motor is fixedly connected with a driving rod, and the right end of the driving rod is fixedly connected with a third bevel gear. According to the glue spraying device, the stepping block and the double-head motor are arranged, so that the top glue spraying nozzle can move in a stepping manner while the wine box can rotate uniformly in the glue spraying process, and the glue spraying operation can be performed efficiently and uniformly.

Description

Technical Field

[0001] The utility model relates to the technical field of wine box packaging and processing devices, in particular to a stable glue spraying device for wine box molding. Background Art

[0002] When the wine box is molded and produced, glue spraying is one of the key steps. Glue spraying acts on the various parts of the wine box to ensure that they are firmly bonded, increase the stability and durability of the overall structure, and improve the sealing to prevent the wine bottle from leaking or getting wet. In addition, glue spraying also beautifies the appearance of the wine box and makes it more attractive. At the same time, automated glue spraying operations also improve production efficiency and reduce costs.

[0003] After searching, the Chinese patent document with announcement number CN216500408U discloses an automatic gluing device for producing wine box outer packaging, including a base and a vertical plate, a rotating motor is arranged at the top of the base, and a first bearing is arranged at one end of the rotating motor, a first threaded rod is installed inside the first bearing, and a rod sleeve is arranged outside the first threaded rod, a workbench is arranged at the top of the rod sleeve, and a leak plate is installed inside the workbench, and a movable clamp is arranged at the top of the workbench. The automatic gluing device for producing wine box outer packaging is provided with a second threaded rod, so as to drive the movable clamp to move, so as to facilitate fixing the wine box outer packaging, a gluing box is provided, and the glue in the gluing box is transported by a delivery pump, and is transported from the connecting pipe to the nozzle for spraying, and a fan is provided to circulate the air in the glue, so as to facilitate drying the wine box outer packaging after gluing, thereby improving work efficiency;

[0004] Based on the above patent, through the automatic gluing device for producing the outer packaging of the wine box, a second threaded rod is set to drive the movable splint to move, so as to fix the outer packaging of the wine box, and a glue box is set. The glue in the glue box is transported by a conveying pump and transported from the connecting pipe to the nozzle for spraying. A fan is set to circulate the air in the glue, so as to dry the outer packaging of the wine box after gluing, thereby improving the work efficiency. However, when the wine box is produced, the glue sprayed on the outer packaging needs to be evenly distributed on the entire outer surface of the packaging. When spraying the glue, the outer surface of the wine box needs to be sprayed evenly and slowly, and the efficiency is low. Utility Model Content

[0005] In order to solve the problem of low glue spraying efficiency in wine box packaging in the prior art, the present application provides a stable glue spraying device for wine box molding. By setting a stepping block and a double-head motor, the wine box can rotate evenly during glue spraying and the top glue spray nozzle can move in steps.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A stable glue spraying device for wine box molding, comprises a processing table, wherein left and right sides of the top end of the processing table are fixedly connected to support plates, and the right end of the left support plate is connected to a threaded push rod through a telescopic assembly, and the top of the processing table corresponds to the right side of the support plate on the right side, and a bidirectional motor is fixedly connected to the right side of the processing table, and the left driving end of the bidirectional motor penetrates the outer wall of the support plate on the right side and is fixedly connected to a rotating shaft, and the rotating shaft and the threaded push rod are respectively equipped with a clamping assembly at the opposite end, and the right driving end of the bidirectional motor is fixedly connected to a driving rod, and the right end of the driving rod is fixedly connected to a third bevel gear, and the outer diameter of the third bevel gear is meshed and connected to a second bevel gear, and the rear end of the second bevel gear is fixedly connected to a driven rod, and the left side of the inner wall at the rear end of the processing table is rotatably connected to a driven shaft, and the rear ends of the driven rod and the driven shaft both penetrate the outer wall of the processing table and are connected to a stepping frame through a stepping assembly, and the top of the inner wall at the rear end of the processing table is slidably connected to a glue storage box, and a plurality of glue spray nozzles are installed at the bottom of the glue storage box.

[0008] The telescopic assembly includes a telescopic cylinder fixedly connected to the middle of the right end of the support plate on the left side, the outer wall of the threaded push rod is threadedly connected to the inner wall of the telescopic cylinder, a cavity is opened at the right end of the inner wall of the telescopic cylinder, the right end of the inner wall of the cavity is rotatably connected to a bevel gear cylinder, and the top end of the outer diameter of the bevel gear cylinder is meshedly connected to a first bevel gear.

[0009] The inner wall of the bevel gear cylinder is threadedly connected to the outer wall of the threaded push rod, an adjusting rod is fixedly connected to the middle of the top end of the first bevel gear, the outer wall of the adjusting rod is rotatably connected to the inner wall of the telescopic cylinder, and the top end of the adjusting rod passes through the outer wall of the telescopic cylinder.

[0010] The clamping assembly includes a clamping plate, the middle of the left end of the left clamping plate is rotatably connected to the right end of the threaded push rod, and the right end of the right clamping plate is fixedly connected to the left end of the rotating shaft. The middle of the inner wall of the clamping plate is rotatably connected with a bidirectional screw, and the upper and lower sides of the outer wall of the bidirectional screw are threadedly connected with sliding clamps.

[0011] The threads of the upper and lower outer walls of the bidirectional screws on the left and right sides are in opposite directions, and the middle parts of the opposite ends of the sliding clamps on the left and right sides are slidably connected to the inner wall of the clamping plate.

[0012] The stepper assembly includes an eccentric rod fixedly connected to the driven rod and the rear end of the driven shaft, a connecting rod is rotatably connected at the edge of the rear end of the eccentric rod, a rotating support rod is rotatably connected to the left side of the front end of the connecting rod, a connecting block is rotatably connected to the middle of the rear end of the connecting rod, the top ends of the connecting blocks on the left and right sides are fixedly connected to the bottom end of the stepper frame, and a plurality of stepper blocks are evenly fixedly connected to the top end of the stepper frame.

[0013] The top of the rear end of the stepping frame is slidably connected to the outer wall of the processing table, the top of the rear end of the rotating support rod is rotatably connected to the outer wall of the processing table, the driven rod and the outer wall of the driven shaft are rotatably connected to the inner wall of the rear end of the processing table, the driven rod and the middle part of the outer wall of the driven shaft are fixedly connected with pulleys, and the outer walls of the pulleys on the left and right sides are provided with transmission belts.

[0014] A protective shell is fixedly connected to the right side of the top of the processing table, the outer walls of the driving rod and the driven rod are rotatably connected to the inner wall of the protective shell, the top of the front end of the processing table is fixedly connected to a support frame, and the front end of the glue storage box is slidably connected to the inner wall of the support frame.

[0015] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0016] 1. In the utility model, by setting a stepping block and a double-headed motor, during the process of spraying glue on the wine box, the double-headed motor, the driving rod, the second bevel gear, the third bevel gear, the driven rod, the eccentric rod, the connecting rod, the rotating support rod, the connecting block, the stepping frame, the stepping block and the glue storage box can be evenly rotated, and at the same time, the top glue nozzle can be moved in steps, so as to carry out the glue spraying operation efficiently and evenly.

[0017] 2. In the utility model, by providing a threaded push rod and a bidirectional screw, wine boxes of different lengths can be stably clamped on the processing table for rotation, and evenly receive surface spray glue, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front perspective view of a stable glue spraying device for wine box molding proposed by the utility model;

[0019] Figure 2 This is a rear perspective view of a stable glue spraying device for wine box molding proposed by the utility model;

[0020] Figure 3 This is a schematic diagram of the eccentric rod structure of a stable glue spraying device for wine box molding proposed by the utility model;

[0021] Figure 4 A half-section view of a support frame of a stable glue spraying device for wine box molding proposed by the utility model;

[0022] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0023] Figure 6 for Figure 4 Enlarged view of point B in the middle;

[0024] Figure 7 for Figure 4Enlarged view of point C in the middle;

[0025] Figure 8 The utility model is a schematic diagram of the structure of a stepping frame of a stable glue spraying device for wine box molding.

[0026] Legend:

[0027] 1. Processing table; 2. Protective shell; 3. Bidirectional motor; 4. Transmission belt; 5. Support frame; 6. First bevel gear; 7. Support plate; 8. Telescopic cylinder; 9. Clamping plate; 10. Driving rod; 11. Follower rod; 12. Glue storage box; 13. Stepping block; 14. Eccentric rod; 15. Stepping frame; 16. Connecting rod; 17. Rotating support rod; 18. Connecting block; 19. Glue spray nozzle; 20. Second bevel gear; 21. Third bevel gear; 22. Sliding clamp; 23. Bidirectional screw; 24. Threaded push rod; 25. Bevel gear cylinder; 26. Adjusting rod. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] In the description of this application, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0032] In addition, if the terms "horizontal" or "vertical" appear in the description of this application, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] Example 1: Reference Figure 1 , Figure 2 , Figure 4 and Figure 7 ;

[0035] A stable glue spraying device for wine box molding includes a processing table 1, the left and right sides of the top of the processing table 1 are fixedly connected to support plates 7, the right end of the left support plate 7 is connected to a threaded push rod 24 through a telescopic component, the top of the processing table 1 corresponds to the right side of the right support plate 7 and is fixedly connected to a bidirectional motor 3, the left driving end of the bidirectional motor 3 penetrates the outer wall of the right support plate 7 and is fixedly connected to a rotating shaft, the rotating shaft and the threaded push rod 24 are respectively installed with clamping components at the opposite ends, the right driving end of the bidirectional motor 3 is fixedly connected to a driving rod 10, the right end of the driving rod 10 is fixedly connected to a third bevel gear 21, and the outer diameter of the third bevel gear 21 is meshed with a second Bevel gear 20, the rear end of the second bevel gear 20 is fixedly connected to a driven rod 11, the left side of the inner wall at the rear end of the processing table 1 is rotatably connected to a driven shaft, the driven rod 11 and the rear end of the driven shaft both penetrate the outer wall of the processing table 1 and are connected to a stepping frame 15 through a stepping assembly, the top of the inner wall at the rear end of the processing table 1 is slidably connected to a glue storage box 12, a plurality of glue spray nozzles 19 are installed at the bottom end of the glue storage box 12, a protective shell 2 is fixedly connected to the right side of the top end of the processing table 1, the outer walls of the driving rod 10 and the driven rod 11 are rotatably connected to the inner wall of the protective shell 2, the top of the front end of the processing table 1 is fixedly connected to a support frame 5, and the front ends of the glue storage boxes 12 are slidably connected to the inner wall of the support frame 5;

[0036] Specifically, the threaded push rod 24 can push the left clamping assembly toward the right clamping assembly with the cooperation of the telescopic assembly, so as to facilitate the fixation of wine boxes of different lengths. The driving ends on both sides of the bidirectional motor 3 can rotate synchronously. The rotation of the right driving rod 10 will drive the second bevel gear 20 to rotate through the third bevel gear 21, and then drive the driven rod 11 to rotate. The rotation of the driven rod 11 can drive the driven shaft on the other side to rotate together through the transmission belt 4, so that the stepping assemblies on both sides move synchronously and drive the stepping frame 15 to perform stepping movement, so that the glue storage box 12 can step and slide between the inner wall of the processing table 1 and the support frame 5. The protective shell 2 is used to protect the second bevel gear 20 and the third bevel gear 21. A discharge pump is arranged inside the glue storage box 12 to facilitate the spraying of the glue through the glue nozzle 19.

[0037] Embodiment 2: As one of the optimized structural designs of Embodiment 1, Figure 5 and Figure 6 As shown, the telescopic assembly includes a telescopic cylinder 8 fixedly connected to the middle of the right end of the left support plate 7, the outer wall of the threaded push rod 24 is threadedly connected to the inner wall of the telescopic cylinder 8, a cavity is opened at the right end of the inner wall of the telescopic cylinder 8, a bevel gear cylinder 25 is rotatably connected to the right end of the inner wall of the cavity, the top end of the outer diameter of the bevel gear cylinder 25 is meshedly connected to the first bevel gear 6, the inner wall of the bevel gear cylinder 25 is threadedly connected to the outer wall of the threaded push rod 24, an adjusting rod 26 is fixedly connected to the middle of the top end of the first bevel gear 6, the outer wall of the adjusting rod 26 is rotatably connected to the inner wall of the telescopic cylinder 8, and the adjusting rod 26 is rotatably connected to the inner wall of the telescopic cylinder 8. The top end of the rod 26 penetrates the outer wall of the telescopic cylinder 8, and the clamping assembly includes a clamping plate 9. The middle of the left end of the left clamping plate 9 is rotatably connected to the right end of the threaded push rod 24, and the right end of the right clamping plate 9 is fixedly connected to the left end of the rotating shaft. The middle of the inner wall of the clamping plate 9 is rotatably connected with a bidirectional screw 23, and the upper and lower sides of the outer wall of the bidirectional screw 23 are threadedly connected with sliding clamps 22. The upper and lower sides of the outer wall of the bidirectional screw 23 on the left and right sides have opposite threads, and the middle of the opposite ends of the sliding clamps 22 on the left and right sides are slidably connected to the inner wall of the clamping plate 9;

[0038] Specifically, by rotating the adjusting block 26, the first bevel gear 6 rotates to drive the bevel gear cylinder 25 to rotate, and then the threaded push rod 24 is screwed outward from the inner wall of the telescopic cylinder 8, so that the left clamping plate 9 moves toward the right fixed clamping plate 9, so as to facilitate the stable clamping of wine boxes of different lengths. The wine box between the two clamping plates 9 can be clamped to the middle by rotating the bidirectional screw 23, so as to achieve stable clamping;

[0039] Embodiment 3: As one of the optimized structural designs of Embodiment 1, Figure 3 and Figure 8As shown, the stepper assembly includes an eccentric rod 14 fixedly connected to the rear end of the driven rod 11 and the driven shaft, the rear edge of the eccentric rod 14 is rotatably connected to a connecting rod 16, the left side of the front end of the connecting rod 16 is rotatably connected to a rotating support rod 17, the middle of the rear end of the connecting rod 16 is rotatably connected to a connecting block 18, the tops of the connecting blocks 18 on the left and right sides are fixedly connected to the bottom of the stepper frame 15, a plurality of stepper blocks 13 are evenly fixedly connected to the top of the stepper frame 15, the top of the rear end of the stepper frame 15 is slidably connected to the outer wall of the processing table 1, the top of the rear end of the rotating support rod 17 is rotatably connected to the outer wall of the processing table 1, the driven rod 11 and the outer wall of the driven shaft are rotatably connected to the inner wall of the rear end of the processing table 1, the driven rod 11 and the middle of the outer wall of the driven shaft are fixedly connected to pulleys, and the outer walls of the pulleys on the left and right sides are provided with transmission belts 4;

[0040] Specifically, the eccentric rod 14 rotates, and at the same time, the transmission shaft and the eccentric rod 14 on the other side are driven to rotate through the transmission belt 4, thereby cooperating with the rotating support rods 17 on both sides to make the connecting rod 16 perform reciprocating stepping motion, and then the connecting blocks 18 on both sides drive the stepping frame 15 to perform up and down stepping motion, and then the top stepping block 13 pushes the glue storage box 12 to slide left and right between the top of the processing table 1 and the support frame 5.

[0041] Working principle: First, by rotating the adjusting block 26, the first bevel gear 6 rotates to drive the bevel gear cylinder 25 to rotate, and then the threaded push rod 24 is screwed outward on the inner wall of the telescopic cylinder 8, so that the left clamping plate 9 moves toward the right fixed clamping plate 9, so as to facilitate the stable clamping of wine boxes of different lengths. The wine box between the two clamping plates 9 will be clamped to the middle by rotating the bidirectional screw 23, so as to achieve stable clamping. Then, by starting the bidirectional motor 3, the left drive shaft and the right drive rod 10 are started at the same time, so that the wine box rotates evenly to accept the top glue nozzle 19. The surface is sprayed with glue, and at the same time, the rotation of the right driving rod 10 will drive the second bevel gear 20 to rotate through the third bevel gear 21, and then drive the driven rod 11 to rotate, so that the eccentric rod 14 rotates, and at the same time, the transmission shaft and the eccentric rod 14 on the other side are driven to rotate through the transmission belt 4, so as to cooperate with the rotating support rods 17 on both sides to make the connecting rod 16 do reciprocating stepping motion, and then the connecting blocks 18 on both sides drive the stepping frame 15 to do up and down stepping motion, and then the top stepping block 13 pushes the glue storage box 12 to slide left and right between the top of the processing table 1 and the support frame 5, so as to achieve uniform glue spraying on the wine box below.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A stable glue spraying device for wine box molding, comprising a processing table (1), characterized in that: The left and right sides of the top of the processing table (1) are fixedly connected to support plates (7), the right end of the left support plate (7) is connected to a threaded push rod (24) through a telescopic component, and the top of the processing table (1) corresponds to the right side of the right support plate (7) and is fixedly connected to a bidirectional motor (3), the left driving end of the bidirectional motor (3) passes through the outer wall of the right support plate (7) and is fixedly connected to a rotating shaft, the rotating shaft and the threaded push rod (24) are respectively installed with clamping components at the opposite ends, the right driving end of the bidirectional motor (3) is fixedly connected to a driving rod (10), and the driving rod (1 0) is fixedly connected to the right end with a third bevel gear (21), the outer diameter of the third bevel gear (21) is meshedly connected to the second bevel gear (20), the rear end of the second bevel gear (20) is fixedly connected to a driven rod (11), the left side of the inner wall at the rear end of the processing table (1) is rotatably connected to a driven shaft, the rear ends of the driven rod (11) and the driven shaft both penetrate the outer wall of the processing table (1) and are connected to a stepping frame (15) through a stepping assembly, the top of the inner wall at the rear end of the processing table (1) is slidably connected to a glue storage box (12), and a plurality of glue spray nozzles (19) are installed at the bottom end of the glue storage box (12).

2. The stable glue spraying device for wine box molding according to claim 1 is characterized in that: The telescopic assembly comprises a telescopic cylinder (8) fixedly connected to the middle part of the right end of the support plate (7) on the left side, the outer wall of the threaded push rod (24) is threadedly connected to the inner wall of the telescopic cylinder (8), a cavity is opened at the right end of the inner wall of the telescopic cylinder (8), the right end of the inner wall of the cavity is rotatably connected to a bevel gear cylinder (25), and the outer diameter top end of the bevel gear cylinder (25) is meshingly connected to a first bevel gear (6).

3. The stable glue spraying device for wine box molding according to claim 2 is characterized in that: The inner wall of the bevel gear cylinder (25) is threadedly connected to the outer wall of the threaded push rod (24); an adjusting rod (26) is fixedly connected to the middle of the top end of the first bevel gear (6); the outer wall of the adjusting rod (26) is rotatably connected to the inner wall of the telescopic cylinder (8); and the top end of the adjusting rod (26) passes through the outer wall of the telescopic cylinder (8).

4. The stable glue spraying device for wine box molding according to claim 1 is characterized in that: The clamping assembly comprises a clamping plate (9), wherein the middle portion of the left end of the left clamping plate (9) is rotatably connected to the right end of the threaded push rod (24), and the right end of the right clamping plate (9) is fixedly connected to the left end of the rotating shaft. The middle portion of the inner wall of the clamping plate (9) is rotatably connected to a bidirectional screw (23), and the upper and lower sides of the outer wall of the bidirectional screw (23) are threadedly connected to sliding clamps (22).

5. The stable glue spraying device for wine box molding according to claim 4 is characterized in that: The threads of the upper and lower outer walls of the bidirectional screw rods (23) on the left and right sides are in opposite directions, and the middle parts of the opposite ends of the sliding clamping plates (22) on the left and right sides are both slidably connected to the inner wall of the clamping plate (9).

6. The stable glue spraying device for wine box molding according to claim 1 is characterized in that: The stepping assembly comprises an eccentric rod (14) fixedly connected to the driven rod (11) and the rear end of the driven shaft, the rear end edge of the eccentric rod (14) is rotatably connected to a connecting rod (16), the left side of the front end of the connecting rod (16) is rotatably connected to a rotating support rod (17), the middle part of the rear end of the connecting rod (16) is rotatably connected to a connecting block (18), the top ends of the connecting blocks (18) on the left and right sides are fixedly connected to the bottom end of the stepping frame (15), and the top end of the stepping frame (15) is evenly and fixedly connected to a plurality of stepping blocks (13).

7. The stable glue spraying device for wine box molding according to claim 6 is characterized by: The top of the rear end of the stepping frame (15) is slidably connected to the outer wall of the processing table (1), the top of the rear end of the rotating support rod (17) is rotatably connected to the outer wall of the processing table (1), the driven rod (11) and the outer wall of the driven shaft are rotatably connected to the inner wall of the rear end of the processing table (1), the driven rod (11) and the middle of the outer wall of the driven shaft are fixedly connected to pulleys, and the outer walls of the pulleys on the left and right sides are sleeved with transmission belts (4).

8. The stable glue spraying device for wine box molding according to claim 1 is characterized in that: A protective shell (2) is fixedly connected to the right side of the top of the processing table (1); the outer walls of the driving rod (10) and the driven rod (11) are rotatably connected to the inner wall of the protective shell (2); the top of the front end of the processing table (1) is fixedly connected to a support frame (5); and the front end of the glue storage box (12) is slidably connected to the inner wall of the support frame (5).

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