Automatic cleaning device for steel plate production

Abstract

The utility model belongs to steel sheet processing technical field, specifically is a kind of steel sheet production automatic cleaning device, including work bench, the work bench top side wall is fixedly connected with a pair of first vertical board, the work bench top side wall is fixedly connected with second vertical board, set movable cylinder, water jet and atomizing head, can form strong water flow by the high-speed rotating spray head, effectively flush the dirt, grease, rust and other impurities on the surface of steel sheet, make steel sheet surface in short time get comprehensive, thoroughly clean, and the cleaning mode of rotating water jet can make liquid evenly distribute on the surface of steel sheet, reduce the cleaning dead angle in traditional cleaning mode, help to ensure the overall cleanliness of steel sheet surface, improve product quality, set up cleaning brush can be through the mechanical friction of brush, in-depth steel sheet surface tiny concave-convex place and gap, effectively remove loose oxide skin, rust, oil stain, paint and other impurities improve the cleanliness of steel sheet surface.

Description

Technical Field

[0001] This utility model belongs to the field of steel plate processing technology, specifically an automated cleaning device for steel plate production. Background Technology

[0002] Steel plate is a sheet-like steel material made by pouring molten steel, cooling and pressing it. Due to its high strength and excellent corrosion resistance, it is widely used in many fields such as construction, automobiles, and machinery manufacturing.

[0003] During the production or processing of steel plates, dust, iron filings, oil, rolling oil, rust-preventive oil, and other contaminants will adhere to their surface. These impurities will not only affect the appearance quality of the steel plates, but also have an adverse impact on subsequent processing and use.

[0004] Through long-term use and observation, it has been found that cleaning the surface of the steel plate can effectively remove these impurities and improve the cleanliness of the steel plate.

[0005] Therefore, this utility model provides an automated cleaning device for steel plate production. Utility Model Content

[0006] To overcome the shortcomings of existing technologies and solve at least one of the problems mentioned in the background art, an automated cleaning device for steel plate production is proposed.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: An automated cleaning device for steel plate production, as described in this utility model, includes a workbench. A pair of first vertical plates are fixedly connected to the top side wall of the workbench. A second vertical plate and a third vertical plate are also fixedly connected to the top side wall of the workbench. The second and third vertical plates are correspondingly arranged. A liquid storage tank is assembled in the middle of the inner side wall of the first vertical plate. An inlet pipe is fixed in the middle of the side wall of the liquid storage tank. Multiple connecting pipes are fixedly connected to the middle of the side wall of the liquid storage tank. A fixed cylinder is fixedly connected to the other end of each connecting pipe. A movable cylinder is rotatably connected to the middle of the inner side wall of the fixed cylinder. Multiple water spray pipes are assembled in the middle of the side wall of the movable cylinder. The water spray pipes are inclined. An atomizing head is installed at the other end of each water spray pipe. The liquid storage tank, inlet pipe, connecting pipe, fixed cylinder, movable cylinder, water spray pipes, and atomizing head are all... The structure is hollow and interconnected. Multiple cleaning brushes are fixedly connected to the middle of the side wall of the movable cylinder. A water collection tank is slidably fitted to the middle of the inner side wall of the workbench. A rotating assembly is provided in the middle of the side wall of the third vertical plate. This step involves setting up a movable cylinder, a water spray pipe, and an atomizing head. The high-speed rotating nozzle can generate a strong water flow, effectively washing away dirt, grease, rust, and other impurities from the steel plate surface. This allows the steel plate surface to be thoroughly cleaned in a short time. The rotating water spray method can evenly distribute the liquid on the steel plate surface, reducing the cleaning dead corners that occur in traditional cleaning methods. This helps to ensure the overall cleanliness of the steel plate surface and improve product quality. The cleaning brushes can penetrate into the tiny bumps and crevices of the steel plate surface through the mechanical friction of the brushes, effectively removing loose oxide scale, rust, oil, paint, and other impurities, thus improving the cleanliness of the steel plate surface.

[0008] Preferably, the rotating assembly includes a motor mounted on the top of the workbench. A movable disc is rotatably connected to the middle of the side wall of the second vertical plate. A fixed seat is fixed to the middle of the side wall of the movable disc and the output end of the motor. Telescopic rods are fixed on both sides of the fixed seat, and a clamping plate is fixed to the other end of the telescopic rod. This step, by setting up the motor, movable disc, fixed seat, telescopic rod, and clamping plate, can continuously rotate the steel plate, so that the cleaning fluid is evenly covered on the surface of the steel plate, further reducing cleaning dead corners and helping to ensure that every part of the steel plate surface is thoroughly cleaned, thereby improving the overall cleaning effect. Moreover, during the cleaning process, the steel plate may deform due to uneven force. By continuously rotating the steel plate, the distribution of the cleaning fluid on the surface of the steel plate can be made more uniform, thereby reducing the risk of deformation caused by uneven force.

[0009] Preferably, a channel is formed in the middle of the inner sidewall of the first upright plate, and a movable block is slidably connected to the middle of the inner sidewall of the channel. A wiping pad is fixed between a pair of movable blocks. The wiping pad is made of elastic material. An electric push rod is provided between the movable block and the channel. This step, by setting the channel, movable block and wiping pad, can remove excess moisture from the surface of the steel plate, accelerate its drying process, and help prevent moisture from remaining on the surface of the steel plate, which could lead to rust or corrosion. After cleaning the steel plate, wiping it with the wiping pad can further remove the residue on its surface, making the surface of the steel plate cleaner.

[0010] Preferably, a pair of fixed boxes are fixed between the pair of first upright plates. The pair of fixed boxes are symmetrically arranged on both sides of the workbench. A wringing plate is installed in the middle of the side wall of the fixed box. The wiping pad slides inside the fixed box. By setting the fixed box and the wringing plate, the water and stains accumulated inside the wiping pad can be squeezed out, reducing the transfer of the absorbed stains to the steel plate surface again during the subsequent wiping process, thereby preventing secondary pollution.

[0011] Preferably, a movable shaft is fixed to the top side wall of the workbench, and a flow limiting plate is rotatably connected to the middle of the side wall of the movable shaft. A torsion spring is provided between the movable shaft and the flow limiting plate. This step, by setting the movable shaft and the flow limiting plate, can effectively reduce the splashing of the cleaning liquid onto the steel plate surface again, and further reduce the secondary contamination of the steel plate.

[0012] Preferably, an observation window is provided in the middle of the side wall of the first upright plate. The observation window is made of transparent material. This step allows the staff to directly observe the cleaning of the steel plate and thus judge whether the cleaning effect has met expectations.

[0013] Preferably, an elastic pad is fixed to the middle of the side wall of the clamping plate. The elastic pad is made of elastic material. This step can increase the friction between the clamping plate and the clamped steel plate by setting the elastic pad, thereby improving the clamping force and keeping the steel plate stable during the cleaning process, so that it is not easy to slip or move.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. The automated cleaning device for steel plate production described in this utility model is equipped with a movable cylinder, a water spray pipe, and an atomizing head. The high-speed rotating nozzle generates a strong water flow, effectively washing away dirt, grease, rust, and other impurities from the steel plate surface. This allows for a comprehensive and thorough cleaning of the steel plate surface in a short time. Furthermore, the rotating water spray method ensures even distribution of liquid across the steel plate surface, reducing cleaning dead zones present in traditional methods and helping to maintain the overall cleanliness of the steel plate surface, thus improving product quality. The cleaning brush, through mechanical friction, penetrates deep into the tiny unevenness and crevices of the steel plate surface, effectively removing loose oxide scale, rust, oil, paint, and other impurities, further enhancing the cleanliness of the steel plate surface.

[0016] 2. The automated cleaning device for steel plate production described in this utility model, by setting up a motor, a movable disc, a fixed base, a telescopic rod, and a clamping plate, can continuously rotate the steel plate, so that the cleaning fluid is evenly covered on the surface of the steel plate, further reducing cleaning dead corners and helping to ensure that every part of the steel plate surface is thoroughly cleaned, thereby improving the overall cleaning effect. Moreover, during the cleaning process, the steel plate may deform due to uneven force. By continuously rotating the steel plate, the distribution of the cleaning fluid on the surface of the steel plate can be made more uniform, thereby reducing the risk of deformation caused by uneven force. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a schematic diagram of the cooperative structure of the cleaning brush and the fixing box in this utility model;

[0020] Figure 3 This is a cross-sectional view of the workbench in this utility model;

[0021] Figure 4 This is a schematic diagram of the cooperation structure between the clamping plate and the wiping pad in this utility model.

[0022] Legend:

[0023] 1. Workbench; 11. First upright plate; 12. Second upright plate; 13. Third upright plate; 14. Liquid storage tank; 15. Liquid inlet pipe; 16. Connecting pipe; 17. Fixed cylinder; 18. Movable cylinder; 19. Water spray pipe; 110. Atomizing head; 111. Cleaning brush; 112. Water collection tank; 2. Motor; 21. Movable disc; 22. Fixed base; 23. Telescopic rod; 24. Clamping plate; 3. Channel; 31. Movable block; 32. Wiping pad; 4. Fixed box; 41. Squeezing plate; 5. Movable shaft; 51. Flow limiting plate; 6. Observation window; 7. Elastic pad. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Specific implementation examples are given below.

[0026] like Figures 1 to 4As shown in the figure, an automated cleaning device for steel plate production according to an embodiment of the present invention includes a workbench 1. A pair of first vertical plates 11 are fixedly connected to the top side wall of the workbench 1, a second vertical plate 12 is fixedly connected to the top side wall of the workbench 1, and a third vertical plate 13 is fixedly connected to the top side wall of the workbench 1. The second vertical plate 12 and the third vertical plate 13 are correspondingly arranged. A liquid storage tank 14 is assembled in the middle of the inner side wall of the first vertical plate 11. An inlet pipe 15 is fixed in the middle of the side wall of the liquid storage tank 14. Multiple connecting pipes 16 are fixedly connected to the middle of the side wall of the liquid storage tank 14. A fixed cylinder 17 is fixedly connected to the other end of the connecting pipe 16. A movable cylinder 18 is rotatably connected to the middle of the inner side wall of the fixed cylinder 17. Multiple water spray pipes 19 are assembled in the middle of the side wall of the movable cylinder 18. The water spray pipes 19 are... The structure is inclined, with an atomizing head 110 installed at the other end of the water spray pipe 19. The liquid storage tank 14, inlet pipe 15, connecting pipe 16, fixed cylinder 17, movable cylinder 18, water spray pipe 19, and atomizing head 110 are all hollow and interconnected. Multiple cleaning brushes 111 are fixedly connected to the middle of the side wall of the movable cylinder 18. A water collection tank 112 is slidably fitted to the middle of the inner side wall of the workbench 1. A rotating assembly is provided in the middle of the side wall of the third vertical plate 13. During operation, the operator places the steel plate to be cleaned into the rotating assembly, then starts the rotating assembly, which continuously rotates the steel plate. Then, the inlet pipe 15 is connected to the cleaning fluid. Because the liquid storage tank 14, inlet pipe 15, connecting pipe 16, fixed cylinder 17, movable cylinder 18, and atomizing head 110 are all hollow and interconnected, the water spray pipe 19 and atomizing head 110 are all hollow and interconnected. Multiple cleaning brushes 111 are fixedly connected to the middle of the side wall of the movable cylinder 18. A water collection tank 112 is slidably fitted to the middle of the inner side wall of the workbench 1. A rotating assembly is provided in the middle of the side wall of the third vertical plate 13. During operation, the operator places the steel plate to be cleaned into the rotating assembly, then starts the rotating assembly, which continuously rotates the steel plate. Then, the inlet pipe 15 is connected to the cleaning fluid. Water pipe 19 is connected to atomizing head 110. The cleaning fluid enters the storage tank 14 and passes through multiple connecting pipes 16 into the fixed cylinder 17, movable cylinder 18, and spray pipe 19. It is then sprayed from multiple atomizing heads 110 onto the steel plate surface. Because the spray pipe 19 is inclined and the fixed cylinder 17 and movable cylinder 18 are rotatably connected, when the liquid passes through the spray pipe 19 and is sprayed outwards from the atomizing head 110, the inertia of the liquid pushes the spray pipe 19, causing the spray pipe 19 to drive the movable cylinder 18 to rotate inside the fixed cylinder 17. At this time, the liquid is sprayed onto the steel plate surface while rotating under the rotation of the movable cylinder 18. Simultaneously, multiple cleaning brushes 111 on the side wall of the movable cylinder 18 rotate and clean the steel plate surface. In this step, the movable cylinder 18, water spray pipe 19, and atomizing head 110 are set up. The high-speed rotating nozzle can form a strong water flow, effectively washing away dirt, grease, rust, and other impurities from the steel plate surface, so that the steel plate surface is thoroughly cleaned in a short time. The rotating water spray cleaning method can make the liquid evenly distributed on the steel plate surface, reducing the cleaning dead corners that occur in traditional cleaning methods, which helps to ensure the overall cleanliness of the steel plate surface and improve product quality. The cleaning brush 111 can penetrate into the tiny bumps and crevices of the steel plate surface through the mechanical friction of the brush, effectively removing loose oxide scale, rust, oil, paint, and other impurities, improving the cleanliness of the steel plate surface.

[0027] like Figure 1 , Figure 3 and Figure 4As shown, the rotating assembly includes a motor 2, which is mounted on the top of the workbench 1. A movable disc 21 is rotatably connected to the middle of the side wall of the second vertical plate 12. A fixed seat 22 is fixed to the middle of the side wall of the movable disc 21 and the output end of the motor 2. Telescopic rods 23 are fixed on both sides of the fixed seat 22, and a clamping plate 24 is fixed to the other end of the telescopic rods 23. During operation, the operator pulls open a pair of telescopic rods 23, places both ends of the steel plate to be cleaned between a pair of clamping plates 24, and then releases the control of the telescopic rods 23. At this time, the clamping plates 24 will firmly clamp the steel plate. Then, the motor 2 is started, and the motor 2 will drive the fixed seat 22 fixed to the output end to rotate, so that the movable disc 21 on the second vertical plate... The steel plate to be cleaned rotates continuously between the second vertical plate 12 and the third vertical plate 13 while rotating on the side wall 12. This step, through the setting of motor 2, movable disc 21, fixed seat 22, telescopic rod 23 and clamping plate 24, can continuously rotate the steel plate, so that the cleaning fluid is evenly covered on the surface of the steel plate, further reducing cleaning dead corners and helping to ensure that every part of the steel plate surface is thoroughly cleaned, thereby improving the overall cleaning effect. In addition, during the cleaning process, the steel plate will deform due to uneven force. By continuously rotating the steel plate, the distribution of cleaning fluid on the surface of the steel plate can be more even, thereby reducing the risk of deformation caused by uneven force.

[0028] like Figures 1 to 4 As shown, a channel 3 is provided in the middle of the inner side wall of the first upright plate 11. A movable block 31 is slidably connected to the middle of the inner side wall of the channel 3. A wiping pad 32 is fixed between a pair of movable blocks 31. The wiping pad 32 is made of elastic material. An electric push rod is provided between the movable block 31 and the channel 3. After the cleaning operation is completed, the electric push rod is activated. The electric push rod will push the movable block 31 to slide inside the channel 3, so that the wiping pad 32 between the pair of movable blocks 31 contacts the steel plate surface and wipes the steel plate surface. This step, by setting up the channel 3, movable block 31 and wiping pad 32, can remove excess water from the steel plate surface, accelerate its drying process, and help prevent water from remaining on the steel plate surface, causing problems such as rust or corrosion. After cleaning the steel plate, wiping with the wiping pad 32 can further remove the residue on its surface, making the steel plate surface cleaner.

[0029] like Figures 1 to 4 As shown, a pair of fixed boxes 4 are fixed between a pair of first upright plates 11. The pair of fixed boxes 4 are symmetrically arranged on both sides of the workbench 1. A water-squeezing plate 41 is installed in the middle of the side wall of the fixed box 4. The wiping pad 32 slides inside the fixed box 4. During operation, when the wiping pad 32 wipes the surface of the steel plate and passes through the water-squeezing plate 41 into the fixed box 4, the water-squeezing plate 41 will squeeze the water inside the wiping pad 32. This step, by setting the fixed box 4 and the water-squeezing plate 41, can squeeze out the water and stains accumulated inside the wiping pad 32, reduce the transfer of the absorbed stains to the surface of the steel plate again in the subsequent wiping process, and thus prevent secondary pollution.

[0030] like Figures 1 to 3 As shown, a movable shaft 5 is fixedly connected to the top side wall of the workbench 1. A flow-limiting plate 51 is rotatably connected to the middle of the side wall of the movable shaft 5. A torsion spring is provided between the movable shaft 5 and the flow-limiting plate 51. During operation, when liquid falls onto the top of the workbench 1, the liquid will squeeze the flow-limiting plate 51, causing the flow-limiting plate 51 to rotate on the side wall of the movable shaft 5. At this time, the liquid will pass through the flow-limiting plate 51 and fall into the water collection tank 112, where it will be collected. When the liquid no longer squeezes the flow-limiting plate 51, the torsion spring between the movable shaft 5 and the flow-limiting plate 51 will push the flow-limiting plate 51 back to its original position. This step, by setting the movable shaft 5 and the flow-limiting plate 51, can effectively reduce the splashing of the cleaned liquid back onto the steel plate surface, further reducing the possibility of secondary contamination of the steel plate.

[0031] like Figures 1 to 4 As shown, an observation window 6 is provided in the middle of the side wall of the first upright plate 11. The observation window 6 is made of transparent material. By setting the observation window 6, the staff can intuitively observe the cleaning of the steel plate and thus judge whether the cleaning effect has met expectations.

[0032] like Figure 1 , Figure 3 and Figure 4 As shown, an elastic pad 7 is fixed to the middle of the side wall of the clamping plate 24. The elastic pad 7 is made of elastic material. This step can increase the friction between the clamping plate 24 and the clamped steel plate by setting the elastic pad 7, thereby improving the clamping force and keeping the steel plate stable during the cleaning process, so that it is not easy to slip or move.

[0033] Working principle: The operator places the steel plate to be cleaned in the rotating assembly, then starts the assembly, which continuously rotates the steel plate. The inlet pipe 15 is then connected to the cleaning fluid. Because the storage tank 14, inlet pipe 15, connecting pipe 16, fixed cylinder 17, movable cylinder 18, spray pipe 19, and atomizing head 110 are connected, the cleaning fluid enters the storage tank 14, passes through multiple connecting pipes 16 into the fixed cylinder 17, movable cylinder 18, and spray pipe 19, and is then sprayed onto the surface of the steel plate from multiple atomizing heads 110. The water spray pipe 19 is designed with an inclined structure, and the fixed cylinder 17 and the movable cylinder 18 are rotatably connected. When liquid passes through the water spray pipe 19 and is sprayed outward from the atomizing head 110, the inertia of the liquid will push the water spray pipe 19, causing the water spray pipe 19 to drive the movable cylinder 18 to rotate inside the fixed cylinder 17. At this time, the liquid will be sprayed onto the steel plate surface by rotating under the rotation of the movable cylinder 18. At the same time, multiple cleaning brushes 111 on the side wall of the movable cylinder 18 will rotate to clean the surface of the steel plate. The operator pulls out a pair of telescopic rods 23 and then places the steel plate to be cleaned at both ends. Between a pair of clamping plates 24, release the control of the telescopic rod 23. At this time, the clamping plates 24 will firmly clamp the steel plate. Then start the motor 2. The motor 2 will drive the fixed seat 22 fixed at the output end to rotate, so that the movable plate 21 rotates on the side wall of the second vertical plate 12. At this time, the steel plate to be cleaned will continue to rotate between the second vertical plate 12 and the third vertical plate 13. After the cleaning operation is completed, start the electric push rod. The electric push rod will push the movable block 31 to slide inside the channel 3, so that the wiping pad 32 between the pair of movable blocks 31 contacts the surface of the steel plate. The wiping pad 32 wipes the surface of the steel plate. When the wiping pad 32 wipes the surface of the steel plate and passes through the dewatering plate 41 into the fixed box 4, the dewatering plate 41 will squeeze the water inside the wiping pad 32. When the liquid falls onto the top of the workbench 1, the liquid will squeeze the flow limiting plate 51, causing the flow limiting plate 51 to rotate on the side wall of the movable shaft 5. At this time, the liquid will pass through the flow limiting plate 51 and fall into the water collection tank 112, where it will be collected. When the liquid no longer squeezes the flow limiting plate 51, the torsion spring between the movable shaft 5 and the flow limiting plate 51 will push the flow limiting plate 51 back to its original position.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An automated cleaning device for steel plate production, comprising a workbench (1), characterized in that: A pair of first upright plates (11) are fixed to the top side wall of the workbench (1), a second upright plate (12) is fixed to the top side wall of the workbench (1), and a third upright plate (13) is fixed to the top side wall of the workbench (1). The second upright plate (12) and the third upright plate (13) are arranged correspondingly. A liquid storage tank (14) is assembled in the middle of the inner side wall of the first upright plate (11). An inlet pipe (15) is fixed in the middle of the side wall of the liquid storage tank (14). Multiple connecting pipes (16) are fixed to the middle of the side wall of the liquid storage tank (14). A fixed cylinder (17) is fixed to the other end of the connecting pipe (16). A movable valve is rotatably connected to the middle of the inner side wall of the fixed cylinder (17). The movable cylinder (18) is equipped with multiple water spray pipes (19) in the middle of its side wall. The water spray pipes (19) are inclined and the other end of the water spray pipes (19) is equipped with an atomizing head (110). The liquid storage tank (14), liquid inlet pipe (15), connecting pipe (16), fixed cylinder (17), movable cylinder (18), water spray pipes (19) and atomizing head (110) are all hollow and connected. Multiple cleaning brushes (111) are fixedly connected to the middle of the side wall of the movable cylinder (18). A water collection tank (112) is slidably fitted in the middle of the inner side wall of the workbench (1). A rotating component is provided in the middle of the side wall of the third vertical plate (13).

2. The automated cleaning device for steel plate production according to claim 1, characterized in that: The rotating assembly includes a motor (2), which is mounted on the top of the workbench (1). A movable disk (21) is rotatably connected to the middle of the side wall of the second upright plate (12). A fixed seat (22) is fixed to the middle of the side wall of the movable disk (21) and the output end of the motor (2). Telescopic rods (23) are fixed on both sides of the fixed seat (22), and a clamping plate (24) is fixed to the other end of the telescopic rods (23).

3. The automated cleaning device for steel plate production according to claim 1, characterized in that: A channel (3) is provided in the middle of the inner side wall of the first upright plate (11). A movable block (31) is slidably connected in the middle of the inner side wall of the channel (3). A wiping pad (32) is fixed between a pair of movable blocks (31). The wiping pad (32) is made of elastic material. An electric push rod is provided between the movable block (31) and the channel (3).

4. The automated cleaning device for steel plate production according to claim 3, characterized in that: A pair of fixed boxes (4) are fixed between a pair of first upright plates (11). The pair of fixed boxes (4) are symmetrically arranged on both sides of the workbench (1). A water-squeezing plate (41) is installed in the middle of the side wall of the fixed box (4). The wiping pad (32) slides inside the fixed box (4).

5. The automated cleaning device for steel plate production according to claim 4, characterized in that: The workbench (1) has a movable shaft (5) fixedly connected to the top side wall. A flow limiting plate (51) is rotatably connected to the middle of the side wall of the movable shaft (5). A torsion spring is provided between the movable shaft (5) and the flow limiting plate (51).

6. The automated cleaning device for steel plate production according to claim 4, characterized in that: An observation window (6) is provided in the middle of the side wall of the first upright plate (11), and the observation window (6) is made of transparent material.

7. The automated cleaning device for steel plate production according to claim 2, characterized in that: An elastic pad (7) is fixed to the middle of the side wall of the clamping plate (24), and the elastic pad (7) is made of elastic material.

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