Sponge roller, forming mold and forming method

Abstract

The invention is suitable for cleaning appliances, and discloses a sponge roller, a forming die and a forming method.The sponge roller comprises a roller body and a cylindrical sponge installed on the circumferential surface of the roller body, and at least one set of wavy cambered surface structures are arranged on the surface of the cylindrical sponge along the radial square section of the roller body. Due to the fact that at least one set of wave-shaped cambered surface structure is arranged on the surface of the sponge roller, abrasion resistance can be improved through the wave-shaped cambered surface structure, it can be avoided that power consumption is increased due to the fact that friction force is increased when the sponge roller is used for a long time, and the use experience of a user becomes poor. Meanwhile, the area exposed out of the inner layer of the roller sponge is distributed on the surface of the roller sponge, low water absorption caused by the compactness of the surface of the sponge roller can be avoided, and therefore the cleaning efficiency is improved.

Description

[0001] This application is a divisional application of Chinese Patent Application No. 202111035104.2, entitled "A Sponge Roller, a Molding Die and a Molding Method", filed on September 5, 2021, the contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of cleaning equipment, in particular to a sponge roller, a molding die and a molding method. BACKGROUND

[0003] The cleaning device of the mop and the sweeper is used with a roller, and the sponge roller made of PVA material is usually used. When used, the sponge roller made of PVA material is used as a cleaning member on the cleaning device of the mop and the sweeper due to its characteristics of high density, high water absorption, low cost and easy availability. After installation, the roller is squeezed by a specific mechanical structure to achieve the effect of repeated use.

[0004] The surface of the sponge roller is usually roughened after molding to form a surface with a certain roughness. In addition, the sponge itself has a certain porosity. During the use of the mop and the sweeper cleaning device, the surface of the sponge roller with a little roughness (non-porous part) will be ground more and more flat in the long-term friction process with the surface to be cleaned. The actual contact area between the sponge material and the surface to be cleaned will become larger and larger, and the resistance during the mop and the sweeper cleaning will become larger and larger, increasing the energy consumption of the equipment, shortening the battery life, and the user experience will also become worse and worse with the increase of the use time. How to provide a wear-resistant sponge roller to improve the user experience and the use time. SUMMARY

[0005] The main technical problem solved by the present application is to provide a sponge roller, a molding die and a molding method, wherein the sponge roller can avoid the increase of friction force caused by long-term use of the sponge roller, which leads to the increase of power consumption and the deterioration of user experience.

[0006] In order to solve the above technical problems, in a first aspect, the present application provides a sponge roller mounted on a cleaning device, comprising:

[0007] a roller body;

[0008] The drum sponge is installed on the circumferential surface of the drum body, and the drum sponge surface is provided with at least one set of wave-shaped arc surface structures along the radial section of the drum body. Each set of wave-shaped arc surface structures comprises two first wave-shaped arc surfaces and a second wave-shaped arc surface arranged between the two first wave-shaped arc surfaces. The first wave-shaped arc surfaces and the second wave-shaped arc surface are arranged along the length direction of the drum body and are distributed in the circumferential direction of the drum sponge surface. The gap between each adjacent first wave-shaped arc surface and second wave-shaped arc surface is different. Each wave-shaped arc surface is formed by a plurality of spaced convex strips. The drum sponge surface is polished, so that the surface layer of the drum sponge is partially worn, and the exposed inner layer of the drum sponge is uniformly distributed on the surface layer of the drum sponge.

[0009] The cleaning device has a water pressing strip and a motor. The motor drives the sponge drum to rotate. Only part of the wave-shaped arc surface contacts the cleaning surface during cleaning. The convex strips of the wave-shaped arc surface continuously rotate to clean the residual small garbage. The wave-shaped arc surface structure indirectly reduces the extrusion strength when passing through the water pressing strip each time.

[0010] In one or some optional embodiments, the wave-shaped arc surfaces are arranged in a spiral or arc shape along the length direction of the drum sponge.

[0011] In one or some optional embodiments, grooves are arranged between adjacent convex strips.

[0012] In one or some optional embodiments, when there is a small amount of liquid on the cleaning surface, the groove bottom space can carry away the liquid.

[0013] In one or some optional embodiments, the depth of the groove is greater than 1.5 mm and less than 2 mm, and the width of the groove is greater than 0.5 mm.

[0014] In one or some optional embodiments, the width of the convex strip is greater than 0.5 mm.

[0015] In one or some optional embodiments, the width of the convex strip is the same as the width of the groove.

[0016] In one or some optional embodiments, the area of the wave-shaped arc surface accounts for 1 / 4-1 / 3 of the circumferential surface of the drum sponge.

[0017] In one or some optional embodiments, the drum sponge surface is distributed with an inner layer area exposing the inner layer of the drum sponge, and the inner layer area is distributed at intervals.

[0018] In one or some optional embodiments, the first wave-shaped arc surface is formed by two convex strips and three grooves arranged at intervals.

[0019] In one or some optional embodiments, the second wave-shaped arc surface is formed by three convex strips and four grooves arranged at intervals.

[0020] In one or some optional embodiments, the drum sponge is provided with three groups of wavy arc structures.

[0021] In a second aspect, the present application provides a sponge drum forming die, comprising a die cavity for manufacturing a sponge drum, and the inner wall of the die cavity is provided with the sponge drum as described in the first aspect.

[0022] In one or some optional embodiments, the sponge drum forming die comprises:

[0023] a drum shaft located at the center of the die cavity;

[0024] a sponge forming sleeve surrounding the drum shaft;

[0025] a fixing cover, after being fixed with the sponge forming sleeve and the drum shaft at both ends, the fixing cover, the sponge forming sleeve and the drum shaft form the die cavity;

[0026] wherein the distance between the inner surface of the sponge forming sleeve and the outer surface of the drum shaft is equal.

[0027] In one or some optional embodiments, the fixing cover comprises a left fixing cover and a right fixing cover, each provided with a first fixing step and a second fixing step, the first fixing step is fixed with the drum shaft and positioned with the axis of the sponge forming sleeve, the second fixing step is fixed with the sponge forming sleeve, and the first fixing step and the second fixing step are coaxially arranged.

[0028] In one or some optional embodiments, a sealing ring is arranged between the second fixing step and the sponge forming sleeve.

[0029] In a third aspect, the present application provides a sponge drum forming method, which adopts the sponge drum forming die as described in the second aspect, comprising:

[0030] a sponge drum forming step, at least one group of wavy arc structures is formed on the sponge drum by the sponge drum forming die;

[0031] a sponge drum cutting step, the sponge drum is cut to an appropriate length, and chamfering is performed at both ends of the sponge drum.

[0032] In one or some optional embodiments, the sponge drum forming method further comprises a sponge drum surface polishing step, which comprises polishing the areas on the surface of the sponge drum except the wavy arc structures, so that the surface layer of the drum sponge is partially abraded, and the inner layer of the drum sponge is exposed uniformly.

[0033] In one or some optional embodiments, the chamfering length is 3-7 mm, and the chamfering angle ranges from 30 to 70 degrees.

[0034] In one or some optional embodiments, the sponge roller surface polishing step is performed at a distance of 0.2-1.0 mm between the sponge inner layer regions distributed on the sponge roller surface.

[0035] In one or some optional embodiments, the sponge roller surface polishing step further comprises: performing the polishing step on each set of wave-shaped curved surface structures.

[0036] In one or some optional embodiments, the polishing step performed on each set of wave-shaped curved surface structures comprises: forming the wave-shaped curved surface structures at intervals to expose the sponge inner layer structure.

[0037] The present application discloses a sponge roller, a forming die and a forming method, wherein the sponge roller comprises a roller body and a cylindrical sponge mounted on the circumferential surface of the roller body, and the surface of the cylindrical sponge is provided with at least one set of wave-shaped curved surface structures in the radial direction of the roller body. Since the surface of the sponge roller is provided with at least one set of wave-shaped curved surface structures, the wave-shaped curved surface structures can improve the wear resistance and avoid the increase of friction force and power consumption of the sponge roller during long-term use, thereby improving the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the description only show some of the embodiments of the present application, and should not be considered as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0039] Figure 1 The structure schematic diagram of the sponge roller embodiment of the present application.

[0040] Figure 2 The structure schematic diagram of the sponge roller embodiment of the present application.

[0041] Figure 3 The structure schematic diagram of the sponge roller embodiment of the present application. Figure 2 The structure schematic diagram of the sponge roller embodiment of the present application.

[0042] Figure 4 The flowchart of the sponge roller forming method embodiment of the present application.

[0043] Figure 5 The surface structure schematic diagram of the sponge roller after forming.

[0044] Figure 6a The surface structure schematic diagram of the sponge roller after forming.

[0045] Figure 6bFigure 6c is a 100 times enlarged schematic view of the structure of the post- forming surface of the drum sponge of the present application after polishing.

[0046] Figure 6c is a 100 times enlarged schematic view of the structure of the post- forming surface of the drum sponge of the present application after polishing.

[0047] Figure 6d Figure 6c is a 100 times enlarged schematic view of the structure of the post- forming surface of the drum sponge of the present application after polishing.

[0048] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0049] The claims of the present application will be further described in detail below with reference to the embodiments and the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0050] It should be understood that, in the embodiments of the present application, all directional terms such as "upper", "lower", "left", "right", "front", "back", etc. indicate the orientation or positional relationship shown in the drawings or the orientation or positional relationship usually used when the product of the present application is used, and are only used to simplify the description of the present application, and do not mean or imply that the device, element or component must have a specific orientation and specific orientation structure, and should not be understood as a limitation on the present application. Only for explaining the relative positional relationship, movement condition, etc. between the components shown in the drawings, when the specific posture changes, the directional indication may also change accordingly.

[0051] In addition, the ordinal numbers in the present application, such as "first", "second", etc. are only used for distinguishing purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can be explicitly or implicitly and at least one of the technical features. In the description of the present application, the meaning of "multiple" is at least two, that is, two or more than two, unless otherwise explicitly limited; the meaning of "at least one" is one or more.

[0052] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "arrangement", "connection", "fixing", "screw connection" and the like should be understood in a broad sense, for example, the positional relationship between components can be relatively fixed, or there can be a physically fixed connection between components, which can be detachable or integrated structure, which can be mechanical connection or electrical signal connection, which can be directly connected or indirectly connected through intermediate media or components, which can be internal communication between two elements or mutual interaction between two elements, unless otherwise explicitly limited by the specification, and can be understood as other meanings by the person skilled in the art, which can realize the corresponding functions or effects.

[0053] The controller and control circuit involved in the present application are the conventional control technology or units of those skilled in the art, for example, the control circuit of the controller can be realized by the person skilled in the art by using existing technology, such as simple programming. The software or program involved in the control result realized by cooperating with the hardware, such as the control process of the software or program not described in detail in the specification, belongs to the use of existing technology or the conventional technology of the person skilled in the art. The power supply also uses the existing technology in the art, and the main technical point of the present application is to improve the mechanical device, so the specific circuit control relationship and circuit connection of the present application are not described in detail.

[0054] The present application provides many different embodiments or examples for implementing the different structures of the present application. In order to simplify the disclosure of the present application, the components and arrangements of specific examples in the present application are described. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but the person skilled in the art can realize the application of other processes and / or the use of other materials.

[0055] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0056] As Figure 1 shown, the present application provides a sponge roller embodiment.

[0057] The sponge roller includes a roller body 10 and a cylindrical sponge 11 mounted on the circumferential surface of the roller body 10, and the surface 110 of the cylindrical sponge 11 is provided with at least one set of wave-shaped curved surface structure along the radial direction of the roller body.

[0058] Specifically, the wave-shaped arc surface structure includes three groups of wave-shaped arc surface structures. Each group of wave-shaped arc surface structures includes a first wave-shaped arc surface 112 and a second wave-shaped arc surface 113 arranged between two first wave-shaped arc surfaces 112. The first wave-shaped arc surfaces 112 and the second wave-shaped arc surfaces 113 are uniformly distributed in the circumferential direction of the surface of the cylindrical sponge 11. The wave-shaped arc surface structure is provided with wave-shaped arc surfaces along the length direction of the axial length direction of the roller body 10.

[0059] Each wave-shaped arc surface is formed by a plurality of spaced convex strips, and a groove is arranged between adjacent convex strips. The number of the convex strips and the grooves can be set as required. In the embodiment, the first wave-shaped arc surface 112 is formed by two convex strips and three grooves arranged at intervals; and the second wave-shaped arc surface 113 is formed by three convex strips and four grooves arranged at intervals.

[0060] Because the wave-shaped arc surface structure is distributed on the surface of the sponge roller, when in use, the wave-shaped arc surface structure generates a large friction force with the cleaning surface, so that it is easier to clean the garbage. At the same time, the gap between each adjacent first wave-shaped arc surface 112 and second wave-shaped arc surface 113 is different, and when the roller is working, the friction force formed by the surface of the roller and the cleaning surface changes with the gap, which makes it easier to clean stubborn garbage. At the same time, because of the existence of the groove, when the top of the convex is compressed, the groove has a gap, and when there is a small amount of liquid on the cleaning surface, the liquid can be taken away through the space at the bottom of the groove, thereby improving the carrying capacity of the sponge roller for liquid.

[0061] The groove structure can also have a good carrying effect on granular garbage, so as to adapt to different garbage cleaning. Moreover, the contact surface of the roller in contact with the ground changes from the original plane to the combination of plane and line, and through the gap between the lines, the same position on the ground is scraped by two or more lines at the same time, so that the cleaning force is increased. In addition, because the contact surface of the whole with the ground is reduced, the friction force is reduced, the comfort of mopping is increased, and the power consumption is also indirectly reduced.

[0062] Through experiments, the depth of the groove (not marked in the drawing) is 1-2 mm, the width of the groove is greater than 0.5 mm, and the width of the convex strip is greater than 0.5 mm, so that the cleaning effect is better. When the width of the convex strip is the same as the width of the groove, the cleaning effect can be further improved.

[0063] According to the need, the area of the wave-shaped arc surface accounts for 1 / 4-1 / 3 of the circumferential surface of the cylindrical sponge, and the cleaning effect is the best. According to the need, the wave-shaped arc surface is arranged in a spiral or arc shape along the length direction of the cylindrical sponge 11, so that only part of the contact surface is in contact during cleaning, the working load of the motor on the roller can be reduced, and the cleaning effect is not affected at the same time.

[0064] According to the need, the uniform distribution of the exposed inner layer of the drum sponge is formed on the surface area of the sponge drum except the wave-shaped curved surface structure, as shown in Figures 6a-6d The friction of the drum sponge surface can be further reduced, and the garbage carrying capacity is increased, so that the cleaning efficiency is further improved. At the same time, the exposure of the inner layer of the drum sponge increases the roughness of the whole drum sponge, which is useful for cleaning stubborn garbage.

[0065] As shown in Figures 2-3 The present application also provides a sponge drum forming die embodiment.

[0066] The sponge drum forming die comprises a sponge forming sleeve 20 for making the drum sponge and left and right fixing covers for fixing the drum shaft core 21 during forming. The sponge forming sleeve 20 is provided with a mold cavity with a diameter larger than that of the drum shaft core. After the left and right fixing covers are fixed with the sponge forming sleeve 20 and the drum shaft core 21, a drum sponge forming cavity with the same distance between the surface of the drum shaft core and the mold cavity is formed. The inner wall of the mold cavity has a sponge drum structure, that is, the inner wall of the mold cavity is provided with at least one set of wave-shaped curved surface structure along the radial direction of the drum, which can form the structure described in the above embodiments on the surface of the drum sponge during the forming process.

[0067] Specifically, the left fixing cover 23 and the right fixing cover 22 are respectively provided with two fixing steps, that is, a first fixing step 231 and a second fixing step 231. The first fixing step 231 is fixed and positioned with the drum shaft core 21 and the axis of the sponge forming sleeve 20. The second fixing step 232 is fixed with the sponge forming sleeve 20. The first fixing step 231 and the second fixing step 231 are coaxially arranged. A sealing ring (not marked in the figure) is arranged between the second fixing step 231 and the sponge forming sleeve 20 to prevent the sponge from foaming out during the forming process, which affects the appearance and subsequent processing.

[0068] The wave-shaped curved surface structure comprises three sets of wave-shaped curved surface structures. Each set of wave-shaped curved surface structure comprises a first wave-shaped curved surface 112 and a second wave-shaped curved surface 113 arranged between two first wave-shaped curved surfaces 112. The first wave-shaped curved surface 112 and the second wave-shaped curved surface 113 are uniformly distributed in the circumferential direction of the cylindrical sponge 11 surface. The wave-shaped curved surface structure is provided with wave-shaped curved surfaces along the axial length direction of the drum body 10.

[0069] Each wave-shaped curved surface is composed of a plurality of spaced convex strips, and a groove is arranged between adjacent convex strips. The number of convex strips and grooves can be set according to the need. In this embodiment, the first wave-shaped curved surface 112 is formed by two convex strips and three grooves; the second wave-shaped curved surface 113 is formed by three convex strips and four grooves.

[0070] Due to the wave-shaped arc surface structure distributed on the surface of the sponge roller, when in use, the wave-shaped arc surface structure generates greater friction with the cleaning surface, thereby more easily cleaning the garbage. Meanwhile, the gap between each adjacent first wave-shaped arc surface 112 and second wave-shaped arc surface 113 is different, when the roller works, the surface thereof forms a gap with the cleaning surface, the size of the friction force changes, which is more easily to clean the stubborn garbage.

[0071] Through experiments, the depth of the groove (not marked in the drawing) is 1-2mm, the width of the groove is greater than 0.5mm, and the width of the convex strip is greater than 0.5mm, and the cleaning effect is better. When the width of the convex strip is the same as the width of the groove, the cleaning effect can be further improved.

[0072] According to the need, the wave-shaped arc surface area accounts for 1 / 4-1 / 3 of the circumferential surface of the cylindrical sponge, and the cleaning effect is the best. According to the need, the wave-shaped arc surface is arranged in a spiral or arc shape along the length direction of the cylindrical sponge 11, so that only part of the contact surface is contacted during cleaning, which can reduce the working load of the motor on the roller, and at the same time, the cleaning effect is not affected.

[0073] According to the need, the surface of the roller sponge is distributed with an inner layer area exposed to the inner layer of the roller sponge, and the inner layer areas are distributed at intervals. Since the inner layer area of the roller sponge has a gap, the contact with the cleaning surface generates greater friction, and the surface of the roller sponge has a smooth and dense surface layer formed by contact with the mold during foaming, so that the above setting can improve the roughness of the roller sponge, and the stubborn garbage can be cleaned.

[0074] As shown in Figure 4 - Figure 6d The present application also provides a sponge roller forming method embodiment.

[0075] The sponge roller forming method comprises,

[0076] S10 step, roller sponge forming step, forming a roller sponge with uniform thickness on the surface of the sponge roller (roller shaft core) through a special mold, and the surface of the roller sponge is formed with at least one set of wave-shaped arc surface structure;

[0077] S11 step, sponge roller cutting step, cutting the sponge roller to an appropriate length, and chamfering the both ends of the sponge roller.

[0078] Specifically, in the drum sponge forming step, first, the drum shaft core 21 is placed in the sponge forming sleeve 20, then the drum shaft core 21 is fixed through the left and right fixed covers and the first fixed step 231, and the sponge forming sleeve 20 is fixed through the second fixed step 232, so that the drum shaft core 21 and the sponge forming sleeve 20 are coaxial, and the surface of the drum shaft core 21 and the inner wall of the sponge forming sleeve 20 are uniformly spaced, then the cavity (mold cavity) formed by the drum shaft core 21 and the sponge forming sleeve 20 is injected with sponge material such as PVA material for foaming and forming, and a wave-shaped curved surface structure is formed on the surface of the drum sponge.

[0079] During the forming of the sponge forming sleeve 20, the sea sponge is in contact with the contact surface of the mold cavity of the sponge forming sleeve 20, thereby forming a smooth surface layer on the sea sponge, as shown in Figure 5 Due to the small friction of the smooth surface layer of the drum sponge, it cannot effectively clean the cleaning surface.

[0080] The drum sponge surface is formed with at least one set of wave-shaped curved surface structures. Such structure can be provided with wave-shaped curved surface structures on the smooth surface layer of the drum sponge. When the sponge drum is working, the groove side wall between the wave crests of the wave-shaped curved surface of the drum sponge surface can contact the cleaning surface to generate friction, thereby facilitating efficient cleaning of garbage, especially garbage on the ground.

[0081] Since the drum sponge is formed on the surface of the drum shaft core 21, there may be burrs and the like during the forming of the sponge drum, so it is necessary to cut the sponge drum formed in the S10 step to have a proper length, and to chamfer the two ends.

[0082] After the sponge drum is demolded, a film with a thickness of 0.2-0.5mm is formed on the surface, which brings two problems: increasing the contact area with the ground, and increasing the friction under the same unit pressure, which exceeds the required friction for normal mopping cleaning; at the same time, due to the certain thickness and strong tension of the sponge surface, the internal sponge layer is squeezed in a closed space, which binds part of the material itself with elasticity, and the sponge drum needs to be squeezed constantly during work, so the rebound speed and service life requirements are high, and polishing can also release the elastic force and improve the overall performance.

[0083] Before the S11 step of cutting the sponge drum, the surface of the drum sponge is polished, and the surface area of the sponge drum except the wave-shaped curved surface structure is polished, so that part of the surface layer of the drum sponge is worn out, and the surface layer of the drum sponge is uniformly distributed with the exposed inner layer of the drum sponge, as shown in Figures 6a-6d This can further reduce the friction of the drum sponge surface and increase the garbage carrying capacity, thereby further improving the cleaning efficiency.

[0084] According to the need, the polishing step can also be carried out on each group of wave-shaped arc structures to form the exposed sponge inner layer structure at intervals.

[0085] The wave-shaped arc structure comprises three groups of wave-shaped arc structures. Each group of wave-shaped arc structures comprises a first wave-shaped arc 112 and a second wave-shaped arc 113 arranged between two first wave-shaped arcs 112. The first wave-shaped arcs 112 and the second wave-shaped arcs 113 are uniformly distributed in the circumferential direction of the surface of the cylindrical sponge 11. The wave-shaped arc structure is provided with wave-shaped arcs arranged in the axial length direction of the roller body 10.

[0086] Each wave-shaped arc is formed by a plurality of convex strips arranged at intervals, and a groove is arranged between adjacent convex strips. The number of convex strips and grooves is arranged according to the need. In the embodiment, the first wave-shaped arc 112 is formed by two convex strips and three grooves arranged at intervals; and the second wave-shaped arc 113 is formed by three convex strips and four grooves arranged at intervals.

[0087] Due to the wave-shaped arc structure distributed on the surface of the sponge roller, a large friction force is generated between the wave-shaped arc structure and the cleaning surface during use, so that the garbage is more easily cleaned. At the same time, the gap between each adjacent first wave-shaped arc 112 and second wave-shaped arc 113 is different, and when the roller is working, the friction force formed between the surface of the roller and the cleaning surface changes with the change of the gap, which is more easily to clean stubborn garbage.

[0088] Through experiments, the depth of the groove (not marked in the figure) is 1-2mm, the width of the groove is greater than 0.5mm, and the width of the convex strip is greater than 0.5mm, so that the cleaning effect is better. When the width of the convex strip is the same as the width of the groove, the cleaning effect can be further improved.

[0089] According to the need, the wave-shaped arc area accounts for 1 / 4-1 / 3 of the circumferential surface of the cylindrical sponge, and the cleaning effect is the best. According to the need, the wave-shaped arc is arranged in a spiral or arc shape along the length direction of the cylindrical sponge 11, so that only part of the contact surface is contacted during cleaning, the working load of the motor on the roller can be reduced, and the cleaning effect is not affected.

[0090] According to the need, the surface of the roller sponge is distributed with an inner layer area exposed to the inner layer of the roller sponge, and the inner layer area is arranged at intervals. Since there is a gap in the inner layer area of the roller sponge, a large friction force is generated when it is in contact with the cleaning surface. Since the roller sponge surface is in contact with the mold during foaming and forming, a dense and smooth surface layer is formed, and the friction is small. Therefore, the above setting can improve the roughness of the roller sponge, and the stubborn garbage can be cleaned.

[0091] The sponge roller surface polishing step is to distribute the sponge inner layer region spacing of 0.2-1.0mm on the sponge roller surface. The chamfer length is 3-7mm, and the chamfer angle is in the range of 30-70 degrees.

[0092] The sponge roller surface polishing step further comprises polishing each group of wave-shaped curved surface structures, and the polishing step of each group of wave-shaped curved surface structures comprises forming exposed sponge inner layer structures at intervals on the wave-shaped curved surface.

[0093] Due to the existence of the groove, when the top of the protrusion is compressed, the groove has a gap, and when there is a small amount of liquid on the cleaning surface, the liquid can be taken away through the groove bottom space, thereby improving the carrying capacity of the sponge roller for liquid.

[0094] The groove structure can also have a good carrying effect on granular garbage, so as to adapt to different garbage cleaning. Moreover, the contact surface of the roller in contact with the ground changes from a plane to a combination of a plane and a line, and through the gap between the lines, the same position on the ground is scraped by two or more lines at the same time, thereby increasing the cleaning force. In addition, due to the reduction of the contact surface of the whole with the ground, the friction force is reduced, the comfort of mopping is increased, and the power consumption is also indirectly reduced.

[0095] In the movement track of the roller, the protruding tooth-shaped structure continuously rotates to clean the small garbage remaining in the whole track, and each time it passes through the water pressing strip, the pressing strength is also indirectly reduced, while maintaining the dryness after pressing, the power consumption of pressing is reduced.

[0096] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A sponge roller, mounted on a cleaning device, characterized in that, include: Roller body; The roller sponge is installed on the circumferential surface of the roller body. The surface of the roller sponge has at least one set of wavy arc surface structures along the radial section of the roller body. Each set of wavy arc surface structures includes two first wavy arc surfaces and a second wavy arc surface disposed between the two first wavy arc surfaces. The first wavy arc surfaces and the second wavy arc surfaces are arranged along the length direction of the roller body and distributed in the circumferential direction of the roller sponge surface. The gap between each adjacent first wavy arc surface and the second wavy arc surface is different. Each wavy arc surface is formed by multiple spaced protrusions. The surface of the roller sponge has been polished, causing partial wear on the surface layer of the roller sponge, forming an exposed inner layer of the roller sponge evenly distributed on the surface layer of the roller sponge. The cleaning device has a water pressure bar and a motor. The motor drives the sponge roller to rotate. During cleaning, only part of the wavy arc surface contacts the cleaning surface. The protruding strips on the wavy arc surface rotate continuously to clean up the remaining small debris. The wavy arc surface structure also indirectly reduces the squeezing intensity each time it passes the water pressure bar. Preferably, the wavy arc surface is arranged in a spiral or arc shape along the length of the roller sponge; Preferably, a groove is provided between adjacent protrusions; Preferably, when there is a small amount of liquid on the cleaning surface, the space at the bottom of the groove can carry away the liquid; Preferably, the depth of the groove is greater than 1.5 mm and less than 2 mm, and the width of the groove is greater than 0.5 mm; Preferably, the width of the raised strip is greater than 0.5 mm.

2. The sponge roller as described in claim 1, characterized in that, The width of the raised strip is the same as the width of the groove.

3. The sponge roller as described in claim 1, characterized in that, The wavy arc surface area accounts for 1 / 4 to 1 / 3 of the circumference of the roller sponge.

4. The sponge roller as described in claim 1, characterized in that, The surface of the roller sponge has inner layer regions that expose the inner layer of the roller sponge, and these inner layer regions are distributed at intervals.

5. The sponge roller as described in claim 1, characterized in that, The first wavy arc surface is formed by two raised strips and three grooves spaced apart.

6. The sponge roller as described in claim 1, characterized in that, The second wavy arc surface is formed by three convex strips and four grooves spaced apart.

7. The sponge roller as described in claim 1, characterized in that, The roller sponge has three sets of wavy arc surface structures.

8. A sponge roller forming mold, characterized in that, Includes a mold cavity for making a sponge roller, the inner wall of the mold cavity having a sponge roller as described in any one of claims 1-7; Preferably, the sponge roller forming mold includes: The roller shaft is located at the center of the mold cavity; A sponge-shaped sleeve surrounds the roller shaft. After the fixed cover is fixed to the sponge shaping sleeve and the roller shaft at both ends, the fixed cover, the sponge shaping sleeve and the roller shaft surround the mold cavity. Among them, the distance from the inner surface of the sponge shaping sleeve to the outer surface of the roller shaft is equal; Preferably, the fixing cover includes a left fixing cover and a right fixing cover, which are respectively provided with a first fixing step and a second fixing step. The first fixing step is fixed to the roller shaft and positioned at the axis of the sponge shaping sleeve, and the second fixing step is fixed to the sponge shaping sleeve. The first fixing step and the second fixing step are coaxially arranged. Preferably, a sealing ring is provided between the second fixed step and the sponge shaping sleeve.

9. A method for forming a sponge roller, characterized in that, The sponge roller forming mold as described in claim 8 includes: The sponge roller forming step involves forming at least one set of wavy arc surface structures on the sponge roller using a sponge roller forming mold. The steps for cutting the sponge roller are as follows: cut the sponge roller to an appropriate length and chamfer both ends of the sponge roller. Preferably, the sponge roller forming method further includes a sponge roller surface polishing step, which includes polishing the area of ​​the sponge roller surface other than the wavy arc surface structure, so that the surface layer of the roller sponge is partially worn, and the inner layer of the roller sponge is uniformly distributed on the surface layer of the roller sponge. Preferably, the chamfer length is 3-7mm and the chamfer angle ranges from 30-70 degrees.

10. The sponge roller forming method according to claim 9, characterized in that, The sponge roller surface polishing step involves a sponge inner layer area with a spacing of 0.2-1.0 mm on the sponge roller surface. Preferably, the sponge roller surface polishing step further includes: polishing each group of wavy arc surface structures; Preferably, the polishing step for each group of wavy arc surface structures includes: forming spaced exposed sponge inner layer structures on the wavy arc surface.

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