Router shell stamping device

Abstract

The utility model belongs to the technical field of routers, and particularly relates to a router shell stamping device which comprises a fixing seat. The top of the fixed seat is fixedly connected with a bracket; an electric push rod is fixedly connected to the top of the bracket; the output end of the electric push rod is fixedly connected with an upper mold; the top of the fixed seat is fixedly connected with a lower mold; the inner side of the lower mold is slidably connected with a supporting plate. A connecting plate is fixedly connected to the side wall of the inner side of the fixed seat; the top of the connecting plate is fixedly connected with a first servo motor; the output end of the first servo motor is fixedly connected with a first gear; the guide rod can push the supporting plate to move upwards on the inner side of the lower die, in the moving process of the supporting plate, the router shell with the stamped surface can move outwards along with the supporting plate, when the router shell is completely separated from the inner side of the lower die, the router shell can be separated and taken out, time and labor are saved, and the working efficiency is improved. Therefore, the overall working efficiency when the router shell is separated and taken out is improved, and the labor intensity of workers is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of routers, in particular to a router shell punching device. Background Art

[0002] The router shell stamping device is a stamping equipment specially used for producing router shells. At the same time, the router shell stamping device also has the characteristics of high efficiency, high reliability and easy operation to meet the needs of large-scale production.

[0003] In the current prior art, the router housing stamping device is mainly composed of a fixing seat, a bracket, an upper mold, a lower mold, an electric push rod and other components. Through the coordinated cooperation between these components, the rapid stamping of the router housing can be achieved.

[0004] In the existing router shell stamping device, during the production process of the router shell, the upper mold and the lower mold need to cooperate with each other to stamp the router shell in production. However, after the stamping is completed, the surface temperature of the router shell will increase significantly during the stamping, and the surface of the router shell has a certain viscosity. When the stamped router shell is separated and taken out, the staff needs to do it manually, which is troublesome, time-consuming and labor-intensive, thereby reducing the overall work efficiency when the router shell is separated and taken out. Therefore, a router shell stamping device is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background technology, the utility model provides a router housing stamping device.

[0006] The utility model solves the technical problem by adopting the following technical scheme: a router shell punching device described in the utility model comprises a fixed seat; a bracket is fixedly connected to the top of the fixed seat; an electric push rod is fixedly connected to the top of the bracket; an upper mold is fixedly connected to the output end of the electric push rod; a lower mold is fixedly connected to the top of the fixed seat; a support plate is slidably connected to the inner side of the lower mold; a connecting plate is fixedly connected to the inner side wall of the fixed seat; a first servo motor is fixedly connected to the top of the connecting plate; a first gear is fixedly connected to the output end of the first servo motor; a pair of threaded rods are rotatably connected to the bottom of the inner side of the fixed seat; a second gear is fixedly connected to the top of the threaded rod; the first gear and the second gear are meshed with each other; a plurality of groups of guide columns are fixedly connected to the bottom of the inner side of the fixed seat; a moving block is slidably connected to the surface of the guide column; the moving block is threadedly connected to the threaded rod; a pair of pulleys are rotatably connected to the bottom of the inner side of the fixed seat; the pulleys are connected to the threaded rods; belts are sleeved on the surfaces of the pulleys; a guide rod is fixedly connected to the side wall of the moving block close to the lower mold; the top of the guide rod is connected to the bottom of the support plate.

[0007] Preferably, a second servo motor is fixedly connected to the top of the fixed seat; a fixed block is fixedly connected to the top of the fixed seat; a screw rod is rotatably connected to the inner side of the fixed block; the output end of the second servo motor is connected to the screw rod; a first slide groove is provided on one side wall of the fixed seat; a connecting block is slidably connected to the inner side of the first slide groove; the other end of the connecting block is fixedly connected to a mounting block; the mounting block and the screw rod are threadedly connected; a support frame is fixedly connected to the side wall of the mounting block away from the connecting block; a fixed box is fixedly connected to the top of the support frame; a cleaning plate is slidably connected to the inner side of the fixed box; a plurality of groups of spring columns are fixedly connected to the inner bottom of the fixed box; the top ends of the spring columns are all connected to the bottom of the cleaning plate.

[0008] Preferably, a second slide groove is provided on the side wall of the support frame close to the lower mold; a collection box is slidably connected to the inner side of the second slide groove; a first threaded hole is provided on the top of the collection box; a second threaded hole is provided on the top of the support frame; the first threaded hole and the second threaded hole are aligned with each other; a fastening bolt is threadedly connected to the inner side of the second threaded hole.

[0009] Preferably, the outer wall of the connection block is provided with a pair of placement grooves; the inner sides of the placement grooves are rotatably connected with fitting rotating columns; the outer wall of the fitting rotating column fits with the inner wall of the first sliding groove.

[0010] Preferably, a first magnetic block is fixedly connected to the bottom of the inner side of the fixed box; a second magnetic block is fixedly connected to the bottom of the cleaning plate; and the first magnetic block and the second magnetic block are both arranged on the inner side of the multiple groups of spring columns.

[0011] Preferably, a third slide groove is provided on the top of the fixing seat; a slider is slidably connected to the inner side of the third slide groove; and the top end of the slider is connected to a side wall of the support frame.

[0012] Preferably, a guide plate is fixedly connected to the side wall of the fixed box close to the lower mold; and the bottom end of the guide plate is arranged above the collecting box.

[0013] The utility model is beneficial in that:

[0014] 1. The utility model discloses a router shell stamping device. When it is necessary to separate and take out the stamped router shell, start the first servo motor to drive the first gear to rotate, the first gear drives the second gear to rotate, and the second gear drives the threaded rod to rotate. During the rotation of the threaded rod, the pulley and the belt cooperate with each other to drive another group of threaded rods to rotate, and the rotation of the threaded rod drives the moving block to move upward. During the movement of the moving block, the guide rod is driven to move. At this time, the guide rod can push the support plate to move upward on the inner side of the lower mold. During the movement of the support plate, the router shell with the stamped surface can follow and move outward. When the router shell is completely separated from the inner side of the lower mold, it can be separated and taken out, which saves time and effort, thereby improving the overall work efficiency when the router shell is separated and taken out, and reducing the labor intensity of the staff.

[0015] 2. In the punching device for router shell described in the utility model, since the upper mold works in the external environment for a long time, some dust and impurities will inevitably adhere to the surface. At this time, the second servo motor is started to drive the screw to rotate. During the rotation of the screw, the mounting block and the connecting block can be driven to move toward the side close to the upper mold. The movement of the mounting block drives the support frame to move, and the support frame drives the fixed box to move. During the movement of the fixed box, multiple groups of spring columns push the cleaning plate to move up and down inside the fixed box, and make the top of the cleaning plate fit with the bottom of the upper mold. At this time, during the movement of the fixed box, the cleaning plate can clean the dust and impurities attached to the bottom of the upper mold, thereby improving the cleanliness of the upper mold surface and reducing the situation that the dust and impurities attached to the bottom of the upper mold are more, which makes it easy for the upper mold to embed the dust and impurities at the bottom of the upper mold into the surface of the router shell when the upper mold is performing stamping work. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a three-dimensional diagram of the bracket in the utility model;

[0018] Figure 2 for Figure 1 A magnified image of point A;

[0019] Figure 3 It is a three-dimensional diagram of the lower mold in the utility model;

[0020] Figure 4 It is a three-dimensional diagram of the cleaning plate in the utility model;

[0021] Figure 5 It is a three-dimensional diagram of the collection box in the utility model.

[0022] In the figure: 1. fixed seat; 11. bracket; 12. electric push rod; 13. upper mold; 14. lower mold; 15. support plate; 16. connecting plate; 17. first servo motor; 18. first gear; 19. second gear; 110. threaded rod; 111. guide column; 112. moving block; 113. pulley; 114. belt; 115. guide rod; 2. second servo motor; 21. fixed block; 22. screw rod; 23. first slide groove; 24. connecting block; 25. mounting block; 26. support frame; 27. fixed box; 28. cleaning plate; 29. ​​spring column; 3. second slide groove; 31. collection box; 32. first threaded hole; 33. second threaded hole; 34. fastening bolt; 4. placement groove; 41. fitting rotating column; 5. first magnetic block; 51. second magnetic block; 6. third slide groove; 61. slider; 7. guide plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1 , Figure 2 and Figure 3As shown, a router shell stamping device comprises a fixed seat 1; a bracket 11 is fixedly connected to the top of the fixed seat 1; an electric push rod 12 is fixedly connected to the top of the bracket 11; an upper mold 13 is fixedly connected to the output end of the electric push rod 12; a lower mold 14 is fixedly connected to the top of the fixed seat 1; a support plate 15 is slidably connected to the inner side of the lower mold 14; a connecting plate 16 is fixedly connected to the inner side wall of the fixed seat 1; a first servo motor 17 is fixedly connected to the top of the connecting plate 16; a first gear 18 is fixedly connected to the output end of the first servo motor 17; A pair of threaded rods 110 are rotatably connected to the bottom of the inner side of the seat 1; a second gear 19 is fixedly connected to the top of the threaded rod 110; the first gear 18 and the second gear 19 are meshed with each other; a plurality of guide columns 111 are fixedly connected to the bottom of the inner side of the fixed seat 1; a moving block 112 is slidably connected to the surface of the guide column 111; the moving block 112 is threadedly connected to the threaded rod 110; a pair of pulleys 113 are rotatably connected to the bottom of the inner side of the fixed seat 1; the pulleys 113 are connected to the threaded rod 110; the surfaces of the pulleys 113 are sleeved with belts 1 14; the side wall of the moving block 112 close to the lower mold 14 is fixedly connected with a guide rod 115; the top of the guide rod 115 is connected to the bottom of the support plate 15; when working: when the stamped router shell needs to be separated and taken out, the first servo motor 17 is started to drive the first gear 18 to rotate, the first gear 18 drives the second gear 19 to rotate, and the second gear 19 drives the threaded rod 110 to rotate. During the rotation of the threaded rod 110, the pulley 113 and the belt 114 cooperate with each other to drive another group of threaded rods 110 to rotate , and the threaded rod 110 rotates to drive the moving block 112 to move upward. During the movement of the moving block 112, the guide rod 115 is driven to move. At this time, the guide rod 115 can push the support plate 15 to move upward on the inner side of the lower mold 14. During the movement of the support plate 15, the router shell with the surface stamped can follow and move outward. When the router shell is completely separated from the inner side of the lower mold 14, it can be separated and taken out, which saves time and effort, thereby improving the overall work efficiency when separating and taking out the router shell, and reducing the labor intensity of the staff.

[0025] like Figure 1 and Figure 4As shown, a second servo motor 2 is fixedly connected to the top of the fixed seat 1; a fixed block 21 is fixedly connected to the top of the fixed seat 1; a screw rod 22 is rotatably connected to the inner side of the fixed block 21; the output end of the second servo motor 2 is interconnected with the screw rod 22; a first slide groove 23 is provided on one side wall of the fixed seat 1; a connecting block 24 is slidably connected to the inner side of the first slide groove 23; a mounting block 25 is fixedly connected to the other end of the connecting block 24; the mounting block 25 is threadedly connected to the screw rod 22; a support frame 26 is fixedly connected to the side wall of the mounting block 25 away from the connecting block 24; a fixed box 27 is fixedly connected to the top of the support frame 26; a cleaning plate 28 is slidably connected to the inner side of the fixed box 27; a plurality of groups of spring columns 29 are fixedly connected to the inner bottom of the fixed box 27; the top ends of the spring columns 29 are interconnected with the bottom of the cleaning plate 28; during operation: because the upper mold 13 works in the external environment for a long time , some dust and impurities will inevitably adhere to the surface. At this time, the second servo motor 2 is started to drive the screw rod 22 to rotate. During the rotation of the screw rod 22, the mounting block 25 and the connecting block 24 can be driven to move toward the side of the upper mold 13. The movement of the mounting block 25 drives the support frame 26 to move, and the support frame 26 drives the fixed box 27 to move. During the movement of the fixed box 27, multiple groups of spring columns 29 push the cleaning plate 28 to move up and down inside the fixed box 27, and make the top of the cleaning plate 28 fit the bottom of the upper mold 13. At this time, during the movement of the fixed box 27, the cleaning plate 28 can clean the dust and impurities attached to the bottom of the upper mold 13, thereby improving the cleanliness of the surface of the upper mold 13 and reducing the dust and impurities attached to the bottom of the upper mold 13. The dust and impurities at the bottom of the upper mold 13 are easily embedded in the surface of the router shell when the upper mold 13 is stamping.

[0026] like Figure 1 , Figure 4 and Figure 5 As shown, the side wall of the support frame 26 close to the lower mold 14 is provided with a second slide groove 3; the inner side of the second slide groove 3 is slidably connected to the collection box 31; the top of the collection box 31 is provided with a first threaded hole 32; the top of the support frame 26 is provided with a second threaded hole 33; the first threaded hole 32 and the second threaded hole 33 are aligned with each other; the inner side of the second threaded hole 33 is threadedly connected with a fastening bolt 34; during operation: the collection box 31 is inserted into the inner side of the second slide groove 3, and the fastening bolt 34 is rotated at this time so that the bottom end of the fastening bolt 34 passes through the first threaded hole 32 and enters the inner side of the second threaded hole 33, so as to achieve the effect of fixing the collection box 31 on the inner side of the second slide groove 3, thereby improving the stability of the collection box 31 during operation; through the collection box 31 set up, the dust and impurities cleaned from the bottom of the upper mold 13 can directly fall into the collection box 31, and the collection box 31 collects the cleaned dust and impurities, thereby reducing the occurrence of the dust and impurities directly falling into the inner side of the lower mold 14 after cleaning.

[0027] like Figure 4 As shown, the outer wall of the connecting block 24 is provided with a pair of placement grooves 4; the inner sides of the placement grooves 4 are rotatably connected with fitting rotating posts 41; the outer walls of the fitting rotating posts 41 fit with the inner walls of the first sliding groove 23; during operation: as the connecting block 24 slides inside the first sliding groove 23, the fitting rotating posts 41 rotate accordingly, and the fitting rotating posts 41 reduce the situation in which the surface of the connecting block 24 is easily seriously worn due to the long-term sliding friction between the outer wall of the connecting block 24 and the inner wall of the first sliding groove 23, thereby improving the service life of the connecting block 24.

[0028] like Figure 4 As shown, a first magnetic block 5 is fixedly connected to the bottom inner side of the fixed box 27; a second magnetic block 51 is fixedly connected to the bottom of the cleaning plate 28; the first magnetic block 5 and the second magnetic block 51 are both arranged on the inner side of the plurality of spring columns 29; during operation: when the cleaning plate 28 cleans the dust and impurities on the surface of the upper mold 13, the first magnetic block 5 and the second magnetic block 51 repel each other due to the magnetic force, thereby pushing the top end of the cleaning plate 28 to fit more closely with the bottom of the upper mold 13, so that the top end of the cleaning plate 28 is more effective in cleaning the dust and impurities at the bottom of the first slide chute 23.

[0029] like Figure 2 As shown, a third slide groove 6 is provided on the top of the fixing seat 1; a slider 61 is slidably connected to the inner side of the third slide groove 6; the top of the slider 61 is connected to a side wall of the support frame 26; during operation: during the movement of the support frame 26, the slider 61 follows the movement, and the slider 61 can support the moving support frame 26, thereby improving the stability of the support frame 26 during movement.

[0030] like Figure 2 As shown, the fixed box 27 is fixedly connected with a guide plate 7 on the side wall close to the lower mold 14; the bottom end of the guide plate 7 is arranged above the collecting box 31; during operation: the dust cleaned from the surface of the upper mold 13 will directly enter the interior of the collecting box 31 through the guide plate 7, and the guide plate 7 plays a guiding role, thereby reducing the situation where some of the dust and impurities after cleaning fall to the connection position between the support frame 26 and the collecting box 31; and improving the cleanliness of the connection position between the support frame 26 and the collecting box 31.

[0031] Working principle: when it is necessary to separate and take out the stamped router shell, start the first servo motor 17 to drive the first gear 18 to rotate, the first gear 18 drives the second gear 19 to rotate, and the second gear 19 drives the threaded rod 110 to rotate. During the rotation of the threaded rod 110, the pulley 113 and the belt 114 cooperate with each other to drive another set of threaded rods 110 to rotate, and the rotation of the threaded rod 110 drives the moving block 112 to move upward. During the movement of the moving block 112, the guide rod 115 is driven to move. At this time, the guide rod 115 can push the support plate 15 to move upward on the inner side of the lower mold 14. During the movement of the support plate 15, the surface of the stamped router shell can be Following the movement to the outside, when the router shell is completely separated from the inner side of the lower mold 14, it can be separated and taken out, which saves time and effort, thereby improving the overall work efficiency when the router shell is separated and taken out, and reducing the labor intensity of the staff; because the upper mold 13 works in the external environment for a long time, some dust and impurities will inevitably adhere to the surface. At this time, the second servo motor 2 is started to drive the screw rod 22 to rotate. During the rotation of the screw rod 22, the mounting block 25 and the connecting block 24 can be driven to move toward the side of the upper mold 13. The movement of the mounting block 25 drives the support frame 26 to move, and the support frame 26 drives the fixed box 27 to move. During the movement of the fixed box 27, multiple sets of spring columns 29 push the cleaning plate The cleaning plate 28 moves up and down inside the fixed box 27, and the top of the cleaning plate 28 is fitted with the bottom of the upper mold 13. During the movement of the fixed box 27, the cleaning plate 28 can clean the dust and impurities attached to the bottom of the upper mold 13, thereby improving the cleanliness of the surface of the upper mold 13 and reducing the dust and impurities attached to the bottom of the upper mold 13. The dust and impurities at the bottom of the upper mold 13 are easily embedded in the surface of the router housing when the upper mold 13 is stamping. The collection box 31 is inserted into the inner side of the second slide groove 3. At this time, the fastening bolt 34 is rotated so that the bottom end of the fastening bolt 34 passes through the first threaded hole 32 and enters the inner side of the second threaded hole 33, so as to achieve the collection box 31 being fixed. The effect of fixing the second slide groove 3 is improved, thereby improving the stability of the collection box 31 when working; through the collection box 31, the dust and impurities cleaned from the bottom of the upper mold 13 can be directly dropped into the collection box 31, and the collection box 31 collects the cleaned dust and impurities, thereby reducing the situation that the cleaned dust and impurities directly fall into the inner side of the lower mold 14; during the sliding of the connecting block 24 inside the first slide groove 23, the fitting rotating column 41 rotates accordingly, and the fitting rotating column 41 reduces the situation that the outer wall of the connecting block 24 slides and rubs against the inner wall of the first slide groove 23 for a long time, which may cause serious wear on the surface of the connecting block 24, thereby improving the working life of the connecting block 24;When the cleaning plate 28 cleans the dust and impurities on the surface of the upper mold 13, the first magnetic block 5 and the second magnetic block 51 repel each other due to magnetic force, thereby pushing the top of the cleaning plate 28 to fit more closely with the bottom of the upper mold 13, so that the top of the cleaning plate 28 can clean the dust and impurities at the bottom of the first chute 23 more effectively; during the movement of the support frame 26, the slider 61 follows the movement, and the slider 61 can support the moving support frame 26, thereby improving the stability of the support frame 26 when it moves; the dust cleaned from the surface of the upper mold 13 will directly enter the collection box 31 through the guide plate 7, and the guide plate 7 plays a guiding role, thereby reducing the occurrence of some dust and impurities falling to the connection position of the support frame 26 and the collection box 31 after cleaning; improving the cleanliness of the connection position of the support frame 26 and the collection box 31. ;

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A router housing stamping device, comprising a fixing seat (1); characterized in that: The top of the fixed seat (1) is fixedly connected to a bracket (11); the top of the bracket (11) is fixedly connected to an electric push rod (12); the output end of the electric push rod (12) is fixedly connected to an upper mold (13); the top of the fixed seat (1) is fixedly connected to a lower mold (14); the inner side of the lower mold (14) is slidably connected to a support plate (15); the inner side wall of the fixed seat (1) is fixedly connected to a connecting plate (16); the top of the connecting plate (16) is fixedly connected to a first servo motor (17); the output end of the first servo motor (17) is fixedly connected to a first gear (18); the inner bottom of the fixed seat (1) is rotatably connected to a pair of threaded rods (110); the top of the threaded rod (110) is fixedly connected to a second gear (1 9); the first gear (18) and the second gear (19) are meshed with each other; a plurality of guide columns (111) are fixedly connected to the inner bottom of the fixed seat (1); a moving block (112) is slidably connected to the surface of the guide column (111); the moving block (112) is threadedly connected to the threaded rod (110); a pair of pulleys (113) are rotatably connected to the inner bottom of the fixed seat (1); the pulleys (113) and the threaded rod (110) are connected to each other; a belt (114) is sleeved on the surface of each pulley (113); a guide rod (115) is fixedly connected to the side wall of the moving block (112) close to the lower mold (14); the top end of the guide rod (115) is connected to the bottom of the support plate (15).

2. A router housing stamping device according to claim 1, characterized in that: A second servo motor (2) is fixedly connected to the top of the fixed seat (1); a fixed block (21) is fixedly connected to the top of the fixed seat (1); a screw rod (22) is rotatably connected to the inside of the fixed block (21); an output end of the second servo motor (2) is connected to the screw rod (22); a first sliding groove (23) is provided on one side wall of the fixed seat (1); a connecting block (24) is slidably connected to the inside of the first sliding groove (23); a mounting block (25) is fixedly connected to the other end of the connecting block (24); the mounting block (25) is threadedly connected to the screw rod (22); a support frame (26) is fixedly connected to the side wall of the mounting block (25) away from the connecting block (24); a fixed box (27) is fixedly connected to the top of the support frame (26); a cleaning plate (28) is slidably connected to the inside of the fixed box (27); a plurality of groups of spring columns (29) are fixedly connected to the bottom of the inside of the fixed box (27); the tops of the spring columns (29) are all connected to the bottom of the cleaning plate (28).

3. A router housing stamping device according to claim 2, characterized in that: A second slide groove (3) is provided on a side wall of the support frame (26) close to the lower mold (14); a collection box (31) is slidably connected to the inner side of the second slide groove (3); a first threaded hole (32) is provided on the top of the collection box (31); a second threaded hole (33) is provided on the top of the support frame (26); the first threaded hole (32) and the second threaded hole (33) are arranged to be aligned with each other; a fastening bolt (34) is threadedly connected to the inner side of the second threaded hole (33).

4. A router housing stamping device according to claim 2, characterized in that: The outer wall of the connection block (24) is provided with a pair of placement grooves (4); the inner sides of the placement grooves (4) are rotatably connected with fitting rotating columns (41); the outer wall of the fitting rotating column (41) fits with the inner wall of the first sliding groove (23).

5. A router housing stamping device according to claim 2, characterized in that: A first magnetic block (5) is fixedly connected to the bottom of the inner side of the fixing box (27); a second magnetic block (51) is fixedly connected to the bottom of the cleaning plate (28); and the first magnetic block (5) and the second magnetic block (51) are both arranged on the inner side of the plurality of groups of spring columns (29).

6. A router housing stamping device according to claim 2, characterized in that: A third sliding groove (6) is provided on the top of the fixing seat (1); a sliding block (61) is slidably connected inside the third sliding groove (6); and the top end of the sliding block (61) is connected to a side wall of the support frame (26).

7. A router housing stamping device according to claim 3, characterized in that: A guide plate (7) is fixedly connected to a side wall of the fixed box (27) close to the lower mold (14); the bottom end of the guide plate (7) is arranged above the collection box (31).

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