A sponge roller and method of manufacture

Abstract

The present application is suitable for cleaning appliance. The present application discloses a sponge roller and a forming method, wherein the sponge roller comprises a roller body and a roller sponge installed on the circumferential surface of the roller body, the roller sponge is provided with a distribution of a honeycomb inner layer and a dense surface layer attached to the surface of the honeycomb inner layer, and a plurality of areas exposing the sponge inner layer are distributed on the dense surface layer. In use, because the surface of the roller sponge is provided with grooves, and because a plurality of areas exposing the sponge inner layer are distributed on the side of the groove, the existence of the areas exposing the sponge inner layer makes the surface of the roller sponge be provided with fine grooves, which can provide a certain friction force, but will not produce a larger friction force and a larger noise, and the balance of cleaning effect, noise and service life is considered. At the same time, the grooves are the sponge inner layer, which has good water absorption, so that the cleaning effect is good when cleaning, especially when there is a liquid surface.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cleaning equipment, in particular to a sponge roller and manufacturing method. BACKGROUND

[0002] A roller is used on a cleaning device integrating mopping and sweeping, and the roller is usually a sponge roller made of PVA material. The sponge roller is used as a cleaning component on the cleaning device integrating mopping and sweeping by virtue of the characteristics of high density, high water absorption, low cost and easy availability of the PVA material. After installation, the roller is subjected to extrusion and other operations by virtue of specific mechanical structures, so as to achieve the effect of repeated cleaning.

[0003] The surface of the sponge roller is usually dense after molding, because the sponge roller is in contact with a mold during molding. The dense surface layer is smooth during use, thereby affecting the water absorption rate and cleaning efficiency. SUMMARY

[0004] The present application mainly solves the technical problem of providing a sponge roller and manufacturing method, wherein the sponge roller can avoid the dense surface layer during molding of the sponge roller affecting the water absorption rate and cleaning efficiency.

[0005] To solve the above technical problem, the present application provides a sponge roller, which comprises a roller body and a sponge roller installed on the circumferential surface of the roller body. The sponge roller is provided with a dense surface layer attached to the surface of a honeycomb inner layer, and a plurality of areas exposing the sponge inner layer are distributed on the dense surface layer.

[0006] Further, the areas exposing the sponge inner layer are uniformly distributed.

[0007] Further, the surface of the sponge roller is uniformly provided with grooves in the circumferential direction.

[0008] Further, one side of the groove forms a cleaning scraper with the surface of the sponge roller.

[0009] Further, at least one side of the groove is a bevel, which forms an included angle of less than 90 degrees with the surface of the sponge roller.

[0010] Further, the cross section of the groove is in the shape of a ladder or the two sides are arranged in parallel.

[0011] Further, the area of the groove accounts for 1 / 4-1 / 2 of the circumferential surface of the sponge roller.

[0012] Further, the areas exposing the sponge inner layer account for 1 / 4-1 / 2 of the surface area of the sponge roller.

[0013] The application also provides a sponge roller forming method, which comprises,

[0014] a sponge roller forming step of forming a sponge roller on the surface of the roller shaft core through a special mold;

[0015] a sponge roller surface polishing step of polishing the sponge roller surface at intervals to make the dense surface layer partially abraded and expose the sponge inner layer area;

[0016] a sponge roller cutting step of cutting the sponge roller surface polished and chamfering the length of the sponge roller at both ends;

[0017] Further, the chamfering length is 3-7mm and the chamfering angle is 30-70 degrees.

[0018] Further, in the sponge roller surface polishing step, the distance between the adjacent sponge inner layer exposed areas on the sponge roller surface is 0.2-1.0mm and the area of the sponge inner layer exposed area is 0.002-0.01 square centimeters.

[0019] Further, the sponge roller forming step further comprises forming uniformly distributed grooves on the sponge roller surface.

[0020] Further, one side of the groove forms a cleaning scraper with the sponge roller surface.

[0021] Further, at least one side of the groove is a bevel which forms an angle less than 90 degrees with the sponge roller surface.

[0022] Further, the cross section of the groove is in the shape of a ladder or the two sides are arranged in parallel.

[0023] Further, the area ratio of the sponge inner layer exposed area to the sponge roller surface is 1 / 4-1 / 2.

[0024] This invention discloses a sponge roller and its molding method. The sponge roller includes a roller body and a roller sponge mounted on the circumferential surface of the roller body. The roller sponge has a honeycomb-shaped inner layer and a dense surface layer attached to the honeycomb-shaped inner layer. Multiple areas exposing the inner sponge layer are distributed on the dense surface layer of the dense surface layer. In use, the roller sponge surface has grooves, and the presence of these grooves on the dense surface layer provides a certain amount of friction without generating excessive friction or noise, thus balancing cleaning effectiveness, noise, and service life. Simultaneously, the grooves, being part of the inner sponge layer, have good water absorption, resulting in excellent cleaning performance, especially on liquid surfaces. The junctions on the roller sponge surface form a cleaning blade structure; during molding, the sponge surface at these junctions is relatively dense, providing good cleaning effectiveness for stubborn debris. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the description only show some embodiments of the present invention, and therefore should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of an embodiment of the sponge roller of the present invention.

[0027] Figure 2 This is a schematic diagram of the existing roller sponge surface structure.

[0028] Figure 3 This is an enlarged schematic diagram of the surface structure of an embodiment of the roller sponge of the present invention.

[0029] Figure 4 This is a schematic diagram of the cross-sectional structure of the present invention along the length of the roller sponge in the direction perpendicular to the length.

[0030] Figure 5 This is a schematic diagram of another embodiment of the sponge roller of the present invention.

[0031] Figure 6 This is a schematic diagram of another embodiment of the sponge roller of the present invention.

[0032] Figure 7 for Figure 6 Enlarged schematic diagram of part A in the middle.

[0033] Figure 8 This is a schematic flowchart of an embodiment of the roller sponge molding method of the present invention.

[0034] Figure 9a The structure diagram of the surface of the formed roll sponge after polishing.

[0035] Figure 9b The structure diagram of the surface of the formed roll sponge after polishing, enlarged 20 times.

[0036] Figure 9c The structure diagram of the surface of the formed roll sponge after polishing, enlarged 100 times.

[0037] Figure 9d The structure diagram of the surface of the formed roll sponge after polishing, enlarged 200 times.

[0038] 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

[0039] The claims of the present application will be further described in detail below with reference to specific 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 in 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.

[0040] It should be understood that in the embodiments of the present application, all directional terms described, 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 for the convenience of simplifying 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 of the present application. Only for explaining the relative position relationship, movement condition, etc. between the components shown in the drawings, when the specific posture changes, the directional indication may also change accordingly.

[0041] In addition, in the present application, the ordinal numbers, such as "first", "second", etc., are only for distinguishing purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "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, unless otherwise explicitly limited; the meaning of "at least one" is one or more.

[0042] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "arrangement", "connection", "fixing", "screwed", and other terms should be understood in a broad sense, for example, the relative position relationship between components can be 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 direct connection or indirect connection through intermediate media or components, which can be internal communication between two elements or interaction relationship between two elements, unless otherwise explicitly limited by the specification, and other understandings cannot achieve the corresponding functions or effects. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] The controller and control circuit involved in the present application are the conventional control technology or unit of those skilled in the art. For example, the control circuit of the controller can be realized by ordinary skilled persons in the art by using existing technology, such as simple programming. The software or program involved in the control result realized by cooperating with 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 ordinary skilled persons 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.

[0044] 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 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 those skilled in the art can realize the application of other processes and / or the use of other materials.

[0045] 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.

[0046] As Figure 1 As shown in Fig. 8, the present application provides a sponge roller embodiment.

[0047] The sponge roller comprises a roller body 1 and a roller sponge 2 installed on the circumferential surface of the roller body 1, wherein the roller sponge 2 is provided with a honeycomb inner layer 22 and a dense surface layer 20 attached to the surface of the honeycomb inner layer, and a plurality of areas 201 exposing the sponge inner layer 22 are distributed on the dense surface layer 20.

[0048] Specifically, the areas 201 exposing the sponge inner layer 22 are generally not in the same plane as the dense surface layer 20. The areas 201 exposing the sponge inner layer are preferably uniformly distributed, so as to ensure that the massage force of the roller sponge in contact with the cleaning surface is basically the same during use, thereby avoiding inconsistent friction during use, causing the motor to work fluctuantly, and thereby affecting the service life.

[0049] Through experiments, the area ratio of the areas 201 exposing the sponge inner layer to the surface layer 20 of the roller sponge is 1 / 4-1 / 2, the distance between adjacent areas 201 exposing the sponge inner layer on the surface of the roller sponge is 0.2-1.0 mm, and the area of the areas 201 exposing the sponge inner layer is 0.002-0.01 square centimeters, which well balances the cleaning effect, noise, and service life.

[0050] During use, since the surface of the roller sponge is provided with grooves, and a plurality of areas 201 exposing the sponge inner layer are distributed on the side of the grooves, the surface of the roller sponge is distributed with fine grooves, which can provide a certain friction force, but not too large friction force, thereby generating large noise, and balancing the cleaning effect, noise, and service life. At the same time, the grooves are sponge inner layers, which have good water absorption, and thus have good cleaning effect during cleaning, especially when there is a liquid surface.

[0051] According to needs, the grooves 21 can be provided in spiral, arc, or triangular shapes, which have better cleaning effect through experiments.

[0052] In order to improve the cleaning effect, the surface of the roller sponge is uniformly distributed with grooves 21 along the circumferential direction. As shown in Figure 5 and Figure 6 The groove 21 forms a cleaning scraper 23 with the surface 20 of the roller sponge on one side 211 thereof. At least one side 211 of the groove 21 is a bevel, which forms an included angle of less than 90 degrees with the surface 20 of the roller sponge, and the cleaning scraper 23 formed by the bevel has better cleaning effect on stubborn garbage. The cleaning scraper 23 is in engagement with the cleaning surface, i.e., the direction of the cleaning scraper 23 is consistent with the working rotation direction F of the sponge roller.

[0053] According to needs, the cross section of the groove 21 can also be provided in a ladder shape or two parallel sides.

[0054] Through experiments, the cleaning effect is best when the area of the groove 21 accounts for 1 / 4-1 / 2 of the circumferential surface of the drum sponge.

[0055] The grooves 21 are evenly distributed along the length direction of the surface of the drum sponge 2, and the number thereof is set according to requirements, for example, a plurality of grooves are set. Since the two side surfaces of the groove 21 can be set as vertical or approximately vertical, a cleaning scraper 23 can be formed at the contact surface between the surface 2 of the drum sponge 2 and the side surface 211. Since the contact surface of the drum sponge 2 with the mold is formed as a relatively dense structure when the drum sponge 2 is formed, the cleaning scraper 23 has a good cutting effect on stubborn garbage on the cleaning surface during cleaning, thereby improving the cleaning effect of the stubborn garbage.

[0056] Meanwhile, since the groove 21 has a cavity inside, liquid on the cleaning surface can be scraped away, and the scene of a cleaning surface with more liquid can be adapted. In addition, the granular solid can be collected through the groove 21, so that when there are mixed places of granular and powdery garbage, the drum sponge surface cannot be in contact with the cleaning surface or the contact surface is small due to the existence of the granular garbage, so that the granular and other powdery garbage cannot be cleaned at one time, thereby improving the cleaning efficiency.

[0057] As shown in Figure 8 - Figure 9d The present application also provides a sponge drum forming method embodiment.

[0058] The sponge drum forming method comprises,

[0059] S10 step, drum sponge forming step, forming a drum sponge on the surface of a drum shaft core through a special mold;

[0060] S11 step, sponge drum surface polishing step, polishing the drum sponge forming step at intervals to make the dense surface layer 20 partially worn out and expose the area 201 of the drum sponge inner layer;

[0061] S12 step, sponge drum cutting step, cutting the sponge drum with the polished surface and chamfering the length of both ends of the sponge drum.

[0062] Specifically, in the drum sponge forming step, first, the drum shaft core is placed in the sponge forming sleeve, then the drum shaft core is fixed through the left and right fixed covers and the first fixed step, and the sponge forming sleeve is fixed through the second fixed step, so that the drum shaft core and the sponge forming sleeve are coaxial, the surface of the drum shaft core and the inner wall of the sponge forming sleeve are uniformly spaced, then sponge material such as PVA material is injected into the cavity formed by the drum shaft core and the sponge forming sleeve to perform foaming forming, and a wave-shaped curved surface structure is formed on the surface of the drum sponge.

[0063] During the forming of the sponge forming sleeve, the sea shell is in contact with the cavity surface of the sponge forming sleeve, so that a smooth surface layer is formed on the sea shell, as shown in Figure 2 The smooth surface layer on the surface of the drum sponge has small friction, which cannot effectively clean the cleaning surface.

[0064] After the drum sponge is demolded, a film skin with a thickness of 0.2-0.5mm, i.e. a dense surface layer 20, is formed on the surface, which solves two problems: increasing the contact area with the ground, increasing the friction under the same unit pressure, and exceeding the required friction for normal mopping cleaning; at the same time, because the sponge surface has a certain thickness and strong tension, it will squeeze the internal sponge layer in a closed space, and bind part of the material itself with elasticity, and the drum sponge needs to be squeezed all the time during work, so the rebound speed and service life requirements are high, and the rebound force can be released by grinding to improve the overall performance.

[0065] Before the S12 step of cutting the drum sponge, the surface of the drum sponge is ground in the S12 step, so that part of the surface layer of the drum sponge is worn out, and the surface layer of the drum sponge forms a region 201 with the inner layer of the drum sponge exposed uniformly, as shown in Figures 9a-9d This can further reduce the friction of the surface of the drum sponge, and at the same time increase the ability to carry garbage, thereby further improving the cleaning efficiency.

[0066] Through experiments, the area ratio of the exposed sponge inner layer region 201 to the surface layer 20 of the drum sponge is 1 / 4-1 / 2, the distance between adjacent exposed sponge inner layer regions 201 on the surface of the drum sponge is 0.2-1.0mm, and the area of the exposed sponge inner layer region 201 is 0.002-0.01 square centimeters, which well balances the cleaning effect, noise and service life.

[0067] The distance between the sponge inner layer regions distributed on the surface of the sponge drum in the surface grinding step of the sponge drum is 0.2-1.0mm. The chamfer length is 3-7mm, and the chamfer angle is in the range of 30-70 degrees.

[0068] At S10, the drum sponge forming step, grooves 21 can be formed on the surface of the drum sponge, which are evenly distributed along the length direction of the drum sponge surface, and the number thereof is set according to the need, such as several. Since the two sides of the groove 21 can be set as vertical or approximately vertical, a cleaning scraper 23 can be formed on the intersection between the surface 20 of the drum sponge 2 and the side surface 211. Since the contact surface of the drum sponge 2 with the mold during forming forms a relatively dense structure, the cleaning scraper 23 and the stubborn garbage on the cleaning surface form a good cutting effect during cleaning, as shown in Figure 6 When the drum sponge 2 rotates in the F direction, the cleaning scraper 23 can form a scraping effect in front of the cleaning surface, which can effectively clean the stubborn garbage, even if it cannot be cleaned definitely, it can also be cut to clean the larger stubborn garbage, thereby improving the cleaning effect of the stubborn garbage. According to the need, the groove 21 can be set as a spiral, arc or triangle, which has better cleaning effect through test.

[0069] At the same time, since the groove 21 has a cavity inside, it can scrape away the liquid on the cleaning surface, and can also adapt to the scene of the cleaning surface with more liquid. In addition, granular solids can be collected through the groove 21, so as to avoid that in the mixed place of granular and powdery garbage, the drum sponge surface cannot be in contact with the cleaning surface or the contact surface is small due to the existence of granular garbage, so that the granular and other powdery garbage cannot be cleaned at one time, thereby improving the cleaning efficiency.

[0070] According to the need, the groove 21 can be set as a trapezoidal cross section or one side as an inclined surface structure, which can improve the cleaning effect of the cleaning scraper 23, and also has better ability to transport liquid or granular solid during cleaning. The depth of the groove 21 is 1-2mm, the width of the groove 21 is greater than 0.5mm. Moreover, the width between two adjacent grooves 21 is greater than 0.5mm, which has better cleaning effect and service life of the drum sponge B1 through test. The distance between two adjacent grooves 21 is the same as the width of the groove 21, which also has better cleaning effect and wear resistance.

[0071] According to the need, the area of the groove 21 accounts for 1 / 4-1 / 2 of the circumference surface of the drum sponge. The groove is spiral, arc or strip along the length direction of the drum sponge, and the spiral and arc have better effect through test.

[0072] The at least one side of the groove 21 is a bevel, which forms an included angle less than 90 degrees with the surface of the drum sponge.

[0073] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those ordinarily skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some 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 characterized by, include: Roller body; The roller sponge is installed on the circumferential surface of the roller body. The roller sponge has a honeycomb inner layer and a dense outer layer attached to the honeycomb inner layer. Multiple areas of the inner sponge are distributed on the dense outer layer, which are not on the same plane as the dense outer layer. The areas of the inner sponge are evenly distributed. Multiple grooves are distributed on the circumferential direction of the roller sponge surface. One side of the groove can form a cleaning scraper with the roller sponge surface. At least one side of the groove is a slope, which forms an angle of less than 90 degrees with the roller sponge surface. The cleaning scraper meets the cleaning surface, and the direction of the cleaning scraper is consistent with the working rotation direction of the sponge roller. There is a cavity inside the groove. Part of the two sides of the groove is the honeycomb inner layer and the other part is the dense outer layer. The area of ​​the inner sponge exposed accounts for 1 / 4 to 1 / 2 of the surface area of ​​the roller sponge.

2. The sponge roll of claim 1 wherein, The grooves are evenly distributed along the circumference on the surface of the roller sponge. The depth of the grooves is 1-2mm, the width of the grooves is greater than 0.5mm, and the width between two adjacent grooves is greater than 0.5mm.

3. The sponge roll of claim 1 wherein, The groove has two sides, and the cross-section of the groove is trapezoidal or the two sides are parallel.

4. A sponge roller according to any one of claims 1-3, characterized in that The area of ​​the groove occupies 1 / 4 to 1 / 2 of the circumference of the roller sponge.

5. A method for molding a sponge roller, used to mold a sponge roller as described in any one of claims 1-4, the method comprising, The roller sponge forming step involves forming roller sponge on the surface of the roller core using a special mold; The process of polishing the surface of the sponge roller involves intermittently polishing the dense surface layer of the roller sponge during molding, causing partial wear on the dense surface layer and exposing the area of ​​the inner layer of the roller sponge. The sponge roller cutting process involves cutting the surface of the polished sponge roller and chamfering the length at both ends of the sponge roller.

6. The method of claim 5 wherein the sponge roll is formed by the steps of: In the sponge roller cutting process, the chamfer length is 3-7mm and the chamfer angle ranges from 30-70 degrees.

7. The method of claim 5 wherein the sponge roll is formed by the steps of: In the roller sponge surface polishing step, the distance between adjacent areas of the exposed inner layer of the roller sponge is 0.2-1.0 mm, and the area of ​​the exposed inner layer of the roller sponge is 0.002-0.01 square centimeters.

8. The method of claim 5 wherein the sponge roll is formed by the steps of: The roller sponge molding process includes: first, placing the roller core inside the sponge shaping sleeve; then fixing it to the roller core via left and right fixed covers and a first fixed step, and then to the sponge shaping sleeve via a second fixed step, so that the roller core and the sponge shaping sleeve are coaxial and the surface of the roller core is evenly spaced from the inner wall of the sponge shaping sleeve; then injecting sponge material into the cavity formed by the roller core and the sponge shaping sleeve for foaming and molding, forming evenly distributed grooves on the surface of the roller sponge.

9. The method of claim 8 wherein the sponge roll is formed by, The grooves can be spiral, wavy, or triangular.

10. The method of claim 8 wherein the sponge roll is formed by the steps of: The groove is designed with a trapezoidal cross-section.

11. The method of claim 5 wherein the sponge roll is formed by the steps of: After the sponge is demolded, a dense surface layer with a thickness of 0.2-0.5mm is formed on the surface.

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