Stretching sponge, furniture and cutting tool

Abstract

The utility model provides a tensile sponge, furniture and a cutting tool, and relates to the technical field of sponge production. The tensile sponge is provided with a notch group, the notch group comprises two rows of notches, and each row of notches comprises a plurality of cutting units which are arranged at intervals. The cutting unit comprises a first straight edge and a second straight edge which are connected, and an opening is formed by the first straight edge and the second straight edge. The multiple cutting units of the first row of notches and the multiple cutting units of the second row of notches are opposite in opening direction and are sequentially arranged in a staggered mode. The adjacent first straight edge and second straight edge of two adjacent cutting units in the first row of notches are located in the opening of the same cutting unit in the second row of notches. The tensile sponge can reduce waste of materials, save cost and improve production efficiency.

Description

Technical Field

[0001] This application relates to the technical field of sponge production, and more particularly, to a stretch sponge, furniture, and a cutting tool. Background Art

[0002] Polyurethane foam sponge (hereinafter referred to as sponge) has a porous honeycomb structure and has excellent softness, elasticity, water absorption, and water resistance. Due to its light weight, softness, shock absorption and other characteristics, it is widely used in many fields, such as furniture manufacturing, transportation, sports equipment, and construction industry. At present, on the market, the manufacture of sponges is mainly achieved through polymer chemical reactions to form sponge foams. In practical applications, for multi-functional adaptability, the cutting of the foam is one of the essential processes.

[0003] The current sponge cutting technology is to perform equal-size cutting according to the size required by the application scenario. For example, a 2-meter-long sponge mat needs to be cut proportionally. There is material loss in this process. And in the furniture manufacturing industry, especially in the manufacture of sofas, soft seats, etc., in order to increase the air permeability of the sponge material and improve the comfort of people sitting on it, holes also need to be drilled in the sponge, such as regularly arranged circular holes, honeycomb holes, etc. However, the existing hole-opening methods are all to dig out the required holes on the sponge board, and the dug-out parts are directly discarded, resulting in a large amount of material waste, which is not conducive to energy conservation, material reduction, and cost reduction. Utility Model Content

[0004] The purpose of this application is to provide a stretch sponge, furniture, and a cutting tool, which can improve material utilization rate, reduce material waste, save costs, and improve production efficiency.

[0005] The embodiments of this application are implemented as follows:

[0006] This application provides a stretch sponge, on which a set of incisions is provided. The set of incisions includes a first row of incisions and a second row of incisions. Each row of incisions includes a plurality of cutting units arranged at intervals; each cutting unit includes a first straight edge and a second straight edge connected to each other, and the first straight edge and the second straight edge form an opening.

[0007] The opening directions of the multiple cutting units in the first row of incisions and the multiple cutting units in the second row of incisions are opposite and are arranged in a staggered manner in sequence.

[0008] The adjacent first straight edge and the second straight edge of two adjacent cutting units in the first row of incisions are located within the opening of the same cutting unit in the second row of incisions.

[0009] In an alternative embodiment, several of the cutting units in the same row of cuts are arranged at equal intervals in a first direction, and the first row of cuts and the second row of cuts in the same cut group are arranged at equal intervals in a second direction, and the first direction and the second direction form an angle of 60 degrees to 120 degrees.

[0010] In an alternative embodiment, in a single cutting unit, the distance between the first straight edge and the second straight edge in the first direction is L1, the maximum depth of the opening in the second direction is L2, and the ratio of L2 to L1 is 0.3 to 0.7.

[0011] In an alternative embodiment, in the same cut group, the minimum distance between the first row of cuts and the second row of cuts in the second direction is L3, and L3 is 10% to 50% of L2.

[0012] In an alternative embodiment, in the same row of cuts, the distance between two adjacent cutting units and between the adjacent first straight edge and the second straight edge is L4, and L4 is 20% to 60% of L1.

[0013] In an alternative embodiment, multiple rows of the cut groups are arranged at equal intervals on the stretchable sponge.

[0014] In an alternative embodiment, the cutting unit further includes a connecting edge, the first straight edge, the connecting edge, and the second straight edge are connected in sequence, the first straight edge and the second straight edge are oppositely arranged, and the first straight edge, the connecting edge, and the second straight edge form an opening.

[0015] In an alternative embodiment, the connecting edge is curved, zigzag, or straight.

[0016] In an alternative embodiment, the connecting edge includes a first straight line segment, a second straight line segment, and a third straight line segment that are connected in sequence. One end of the first straight line segment away from the second straight line segment is connected to the first straight edge, and one end of the third straight line segment away from the second straight line segment is connected to the second straight edge.

[0017] In an alternative embodiment, in the same opening, the distance between the first straight edge and the second straight edge in the first direction is equal to the length of the second straight line segment in the first direction, and the first direction is the arrangement direction of multiple cutting units in the same row of cuts.

[0018] In an alternative embodiment, the distance between two adjacent cut groups in the second direction is L5, the maximum depth of the opening in the second direction is L2, and L5 is 1.1 times to 2.5 times of L2.

[0019] In an alternative embodiment, the cutting unit further includes a closing edge, and the first straight edge, the second straight edge and the closing edge are sequentially connected end to end.

[0020] In an alternative embodiment, the thickness of the stretch sponge is 1 cm to 20 cm.

[0021] This application provides a piece of furniture, including the stretch sponge as described in any one of the foregoing embodiments.

[0022] This application provides a cutting tool configured to form a set of incisions on the stretch sponge as in the foregoing embodiments.

[0023] The beneficial effects of the embodiments of this application include:

[0024] For the stretch sponge provided by this application, during the cutting process, only incisions are stamped on the stretch sponge, and then the sponge is stretched according to the shape of the incisions. The incisions are deformed by stretching, so as to obtain a corresponding hole structure on the stretch sponge. This cutting method of forming holes by stretching can almost achieve no cutting loss, greatly improve the material utilization rate, and save costs. Moreover, since the waste of the stretch sponge is reduced, the production volume of the entire sponge can be reduced, thereby reducing environmental pollution.

[0025] The furniture provided by this application includes the above-mentioned stretch sponge, which not only improves the utilization rate of the stretch sponge, reduces the total production volume of the sponge, and improves production efficiency. It can also form a stable hole structure, has good air permeability, is convenient to control the softness and hardness, and improves the comfort of the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the following will briefly introduce the drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of this application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a schematic structural diagram of the stretch sponge before stretching provided by the embodiment of this application;

[0028] Figure 2 It is a schematic structural diagram of a set of incisions of the stretch sponge provided by the embodiment of this application;

[0029] Figure 3 It is a schematic structural diagram of a cutting unit of the stretch sponge provided by the embodiment of this application;

[0030] Figure 4 It is a schematic structural diagram of a cutting unit of the stretch sponge provided by the embodiment of this application;

[0031] Figure 5 Structural schematic diagram of a cutting unit of the stretched sponge provided by the embodiment of the present application;

[0032] Figure 6 Structural schematic diagram of a cutting unit of the stretched sponge provided by the embodiment of the present application;

[0033] Figure 7 Structural schematic diagram of a cutting unit of the stretched sponge provided by the embodiment of the present application;

[0034] Figure 8 Structural schematic diagram of the stretched sponge after stretching provided by the embodiment of the present application;

[0035] Figure 9 Structural schematic diagram of the stretched sponge before stretching provided by the embodiment of the present application;

[0036] Figure 10 Structural schematic diagram of a cutting unit of the stretched sponge provided by the embodiment of the present application;

[0037] Figure 11 Structural schematic diagram of the stretched sponge after stretching provided by the embodiment of the present application;

[0038] Figure 12 Structural schematic diagram of the stretched sponge before stretching provided by the embodiment of the present application;

[0039] Figure 13 Structural schematic diagram of a cutting unit of the stretched sponge provided by the embodiment of the present application;

[0040] Figure 14 Structural schematic diagram of the stretched sponge after stretching provided by the embodiment of the present application;

[0041] Figure 15 Structural schematic diagram of a cutting tool applicable to the stretched sponge provided by the embodiment of the present application.

[0042] Icon: 100 - stretched sponge; 200 - incision; 210 - incision group; 220 - first row of incisions; 230 - second row of incisions; 241 - first straight edge; 242 - second straight edge; 243 - connecting edge; 244 - first straight line segment; 245 - second straight line segment; 246 - third straight line segment; 247 - opening; 248 - closing edge; 300 - hole structure; 310 - connecting rib; 400 - cutting tool. Detailed implementation manners

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. The components of the embodiments of this application usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of this application claimed, but merely represents selected embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of this application without creative efforts fall within the scope of protection of this application.

[0045] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0046] In the description of this application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0047] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0048] In the description of this application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] During the foaming process of the sponge, a large amount of harmful gases are generated and a large amount of heat is dissipated, causing a certain degree of environmental pollution. The existing methods of opening holes in the sponge are all to punch out the required hole structures on the sponge board, and the punched parts are directly discarded, resulting in a large waste of sponge materials, which is not conducive to energy conservation, material reduction, and cost reduction. Considering the loss during the cutting process, the output of the sponge will be increased during production, increasing the cost. At the same time, the polluting gases discharged into the atmosphere will also increase accordingly, exacerbating environmental pollution.

[0050] In view of this, the present application proposes a stretched sponge 100, which can reduce the loss of the stretched sponge 100 during the cutting process, improve the utilization rate of the stretched sponge 100, reduce costs, and reduce environmental pollution.

[0051] Please refer to Figures 1 to 3 , this embodiment provides a stretched sponge 100. During the cutting process, only notches 200 are punched on the stretched sponge 100, and then the stretched sponge 100 is stretched according to the shape of the notches 200. By stretching, the notches 200 are deformed, so as to obtain corresponding hole structures 300 on the stretched sponge 100 (see Figure 8 ). This cutting method of forming holes by stretching can almost achieve no cutting loss, greatly improve the material utilization rate, and save costs.

[0052] The stretched sponge 100 is provided with a notch group 210. The notch group 210 includes two rows of notches 200 that cooperate with each other, namely the first row of notches 220 and the second row of notches 230. Each row of notches 200 includes a plurality of spaced-apart cutting units. Each cutting unit includes a connected first straight edge 241 and a second straight edge 242, and the first straight edge 241 and the second straight edge 242 form an opening 247. The openings 247 of the plurality of cutting units in the first row of notches 220 and the plurality of cutting units in the second row of notches 230 are opposite in direction and are arranged in sequence in a staggered manner. It can be understood that the cutting units in the second row of notches 230 are configured to be formed by rotating the cutting units in the first row of notches 220 by 180 degrees. In other words, the structures of the cutting units in the two rows of notches 200 are the same, but only the layout angles are adjusted.

[0053] In a notch group 210, the adjacent first straight edge 241 and the second straight edge 242 of two adjacent cutting units in the first row of notches 220 are located within the opening 247 of the same cutting unit in the second row of notches 230. It can be understood that in the same row of notches 200, all the openings 247 are in the same direction. The openings 247 in the two rows of notches 200 are opposite and are arranged in sequence in a staggered manner.

[0054] Combined with Figure 4, Optionally, the first straight edge 241 and the second straight edge 242 can be directly connected or indirectly connected. For example, the first straight edge 241 and the second straight edge 242 are directly connected and arranged at an angle. The angle formed by the first straight edge 241 and the second straight edge 242 is 30 degrees to 150 degrees, such as 30 degrees, 40 degrees, 45 degrees, 60 degrees, 70 degrees, 80 degrees, 90 degrees, 120 degrees, or any value between 30 degrees and 150 degrees.

[0055] Among several cutting units in the same row of cuts 200, they are arranged at intervals in the first direction, and two rows of cuts 200 in the same cut group 210 are arranged at intervals in the second direction. That is, the cutting units are arranged at intervals in the first direction, and the cut group 210 is arranged at intervals in the second direction. The first direction and the second direction form an angle of 60 to 120 degrees. In this embodiment, the first direction and the second direction are approximately 90 degrees. The first direction and the second direction are substantially perpendicular.

[0056] Combined Figure 3 , the cutting unit further includes a connecting edge 243. The first straight edge 241, the connecting edge 243, and the second straight edge 242 are connected in sequence. The first straight edge 241 and the second straight edge 242 are arranged oppositely. The first straight edge 241, the connecting edge 243, and the second straight edge 242 form an opening 247.

[0057] In a single cutting unit, the distance between the first straight edge 241 and the second straight edge 242 in the first direction is L1, the maximum depth of the opening 247 in the second direction is L2, and the ratio of L2 to L1 is 0.3 to 0.7. Among them, L1 can also be understood as the maximum width of a single cutting unit in the first direction. L2 can also be understood as the maximum length of a single cutting unit in the second direction.

[0058] Optionally, in the same cut group 210, the minimum distance between the first row of cuts 220 and the second row of cuts 230 in the second direction is L3, and L3 is 10% to 50% of L2.

[0059] The distance between two adjacent first straight edges 241 and second straight edges 242 of adjacent cutting units in the same row of cuts 200 is L4, and L4 is 20% to 60% of L1. It can be understood that in the dimension design of L3 and L4, if the dimension design is too large, it is easy to have tensile springback and the structure after stretching is unstable. If the dimension design is too small, it is easy to have fractures during the stretching process. To balance the structural stability and structural strength after stretching, in this embodiment, L1 is about 70 mm, L2 is about 32 mm, L3 is about 8 mm, and L4 is about 20 mm.

[0060] Optionally, multiple rows of incision groups 210 are equidistantly arranged on the stretch sponge 100. The number of incision groups 210 is a natural number greater than or equal to 2, such as 2, 3, 4, 5, 6, 10 or more. The specific number of incision groups 210 is determined according to the size specification of the stretch sponge 100 and can be any positive integer greater than or equal to 2.

[0061] Combined Figures 5 to 7 , optionally, the connecting edge 243 is curved, zigzag or straight. For example, the connecting edge 243 is arched or semi-circular, etc. The contour of the incision 200 of the cutting unit can be similar to a rectangle, square, pentagon, hexagon or octagon with one side open 247, etc.

[0062] Optionally, combined Figure 3 , the connecting edge 243 includes a first straight line segment 244, a second straight line segment 245 and a third straight line segment 246 connected in sequence. One end of the first straight line segment 244 far from the second straight line segment 245 is connected to the first straight edge 241, and one end of the third straight line segment 246 far from the second straight line segment 245 is connected to the second straight edge 242. In this way, the contour of the incision 200 of the cutting unit is similar to a hexagon with an opening 247 on one side.

[0063] Optionally, in the same opening 247, the distance between the first straight edge 241 and the second straight edge 242 in the first direction is equal to the length of the second straight line segment 245 in the first direction. Among them, the first direction is the arrangement direction of multiple cutting units in the same row of incisions 200.

[0064] The distance between two adjacent incision groups 210 in the second direction is L5, and the maximum depth of the opening 247 in the second direction is L2. L5 is 1.1 times to 2.5 times of L2. In this embodiment, L5 is about 60 mm. Of course, it can also be designed as any value among 40 mm, 45 mm, 50 mm, 55 mm, 65 mm, 70 mm, 75 mm, 80 mm or any value from 35 mm to 80 mm.

[0065] In this embodiment, the stretch sponge 100 is applicable to the stretch sponge 100 with a thickness of 1 cm to 20 cm. Optionally, the incision 200 penetrates in the thickness direction of the stretch sponge 100. That is, the cutting depth of the incision 200 is the thickness of the stretch sponge 100. The stretch sponge 100 can be made of EPE or sponge and has good deformation and reset ability.

[0066] When stretching the stretch sponge 100, a pulling force is applied along the second direction, causing the incision 200 to deform. The length of the stretch sponge 100 in the second direction increases, and finally a stable pore structure 300 is obtained. Through stretching, the length of the stretch sponge 100 in the second direction can be changed to 1.1 to 2 times the original length. For example, the original 1m long stretch sponge 100 can be stretched into a stretch sponge 100 about 2m long. And the stretched stretch sponge 100 has a stable pore structure 300, which has better air permeability and a more comfortable user experience when used in products such as sofas, seats, and beds.

[0067] Exemplarily, if the cutting unit adopts Figure 3 the structure shown, after stretching the stretch sponge 100, the obtained stretch sponge 100 with a pore structure 300 is as Figure 8 shown.

[0068] Combined with Figures 9 to 11 , in one or more alternative embodiments, the cutting unit further includes a closing edge 248. The first straight edge 241, the second straight edge 242, and the closing edge 248 are connected end to end in sequence. That is, each cutting unit has a closed shape, as Figure 10 shown, each cutting unit is hexagonal. Optionally, the hexagon is elongated. The length between the two ends of the hexagon in the first direction is much greater than the length between the two ends in the second direction. For example, the length between the two ends of the hexagon in the first direction is about 2 to 5 times the length between the two ends in the second direction. If the shape of the incision group 210 is as Figure 9 shown, the structure of the stretched stretch sponge 100 is generally honeycomb-like, as Figure 11 shown.

[0069] Combined with Figures 12 to 14 , in one or more alternative embodiments, each cutting unit has a closed shape, as Figure 13 shown, each cutting unit is quadrilateral. Optionally, the quadrilateral is a parallelogram, optionally a rhombus. The length between the two ends of the rhombus in the first direction is much greater than the length between the two ends in the second direction. For example, the length between the two ends of the rhombus in the first direction is about 2 to 5 times the length between the two ends in the second direction. If the shape of the incision group 210 is as Figure 11 shown, the structure of the stretched stretch sponge 100 is as Figure 14 shown.

[0070] It can be understood that the closing edge 248 can be a straight edge, a curved edge, an arc, or a broken line, etc. The number of straight edges, curved edges, arcs, or broken lines is not limited, and it can also be a combination of at least two of the above-mentioned multiple lines. The closing edge 248 and the connecting edge 243 can exist in the cutting unit at the same time, or only one of them can exist in the cutting unit, which is not specifically limited here.

[0071] The stretch sponge 100 provided in this embodiment will not cause material loss during the process of forming the hole structure 300, and has simple operation, convenient process, stable and reliable finished product structure. It is beneficial to improve the sponge production efficiency, reduce costs and reduce environmental pollution.

[0072] It should be noted that for the stretch sponge 100 provided in this embodiment, if the hole size formed after stretching is larger, the width of the connecting ribs 310 between the corresponding holes is wider, and such a stretch sponge 100 has a higher hardness. If the hole size formed after stretching is smaller, the width of the connecting ribs 310 between the corresponding holes is narrower, and such a stretch sponge 100 has a lower hardness and shows a softer characteristic. By distributing the shape and spacing of the cut 200, a stretch sponge 100 with a hardness of about 30D - 100D can be obtained, which is suitable for occasions with different softness and hardness requirements and has a wide application range.

[0073] This embodiment also provides a piece of furniture, including the stretch sponge 100 as described above. The furniture includes but is not limited to beds, sofas, seats, pillows or cushions, etc.

[0074] The production process of the stretch sponge 100 provided in this embodiment is as follows: It includes the foaming step, cutting step and stretching step of the stretch sponge 100.

[0075] The foaming step of the stretch sponge 100 includes:

[0076] (1) Nucleation reaction: That is, silicone oil uniformly dissolves each component together and plays an intermediary role therein, thereby forming a kind of nucleus. The nucleus is the formed cell. The time of the nucleation reaction is about 3 seconds to 5 seconds.

[0077] (2) Creaming reaction: That is, a process of increasing boron under the catalytic action of various minor ingredients. The reaction time is about 6 seconds to 12 seconds.

[0078] (3) Foaming reaction: After the consistency of the material continuously increases, the heat and gas generated by the reaction of toluene diisocyanate TDI and water cause the material to start foaming and the volume to increase. The reaction time is between 70 seconds and 120 seconds.

[0079] (4) Gelation reaction: When the foam temperature reaches a certain level, at this time, the two main ingredients gradually start to gel under the catalytic action of the catalyst T9, and this process is called the gelation reaction, and the time is about 30 seconds to 70 seconds.

[0080] (5) Curing reaction: The sponge only starts the true post-curing reaction stage after gel exhaust.

[0081] The cutting step of the stretch sponge 100 includes:

[0082] (1) Install the designed tool model on the equipment. Optionally, in combination with Figure 15 , the shape of the tool is the same as the shape of the incision 200 on the stretching sponge 100. For example, a tool can be made into the shape of a set of incisions 210. In this way, every time the tool cuts, a row of incision sets 210 is formed on the stretching sponge 100. By moving the stretching sponge 100 or the tool and making multiple cuts, the preset incisions 200 before stretching can be formed on the stretching sponge 100. Or, the size of each tool is adapted to the size of multiple rows of incision sets 210. Such as being adapted to the sizes of two rows, three rows, four rows, five rows or more rows of incision sets 210, so that multiple rows of incision sets 210 can be cut and formed at one time, improving the cutting efficiency. Or, multiple sets of tools can be set, and the incisions 200 of the complete stretching sponge 100 can be formed through one or multiple cuts, improving the cutting efficiency and cutting accuracy.

[0083] (2) Place the stretching sponge 100 on the workbench or the movable platform on the workbench. Optionally, the tray is movably arranged on the workbench, and the stretching sponge 100 is placed in the movable tray. The cutting tool 400 is arranged above the workbench. The stretching sponge 100 is moved to a suitable position, and the cutting tool 400 descends to cut the stretching sponge 100. After one cut is completed, the cutting tool 400 rises back to the initial position, the stretching sponge 100 moves a preset distance, and the cutting tool 400 descends again to cut the stretching sponge 100. This process is repeated until all the incisions 200 on the stretching sponge 100 are completed.

[0084] It can be understood that during the cutting process, the cutting tool 400 cuts the stretching sponge 100 at an appropriate speed and pressure to ensure that the incisions 200 are flat. Optionally, a Teflon coating is applied to the cutting tool 400 to facilitate the demolding of the cutting tool 400. That is, during the process of the cutting tool 400 retracting the knife, it can be smoothly separated from the stretching sponge 100.

[0085] (3) Move the cut stretching sponge 100 to the stretching platform. Along the second direction of the stretching sponge 100, stretch the stretching sponge 100 so that the shape of the incision 200 changes to form a stable hole structure 300. Optionally, the length of the stretched stretching sponge 100 is about twice the original length.

[0086] A cutting tool provided in this embodiment is configured to punch and cut incision sets 210 on the aforementioned stretching sponge 100. The shape of the cutting tool is the same as the shape and size of one row or multiple rows of incision sets 210 on the stretching sponge 100.

[0087] In summary, the stretching sponge 100, cutting tool and furniture provided in the embodiments of the present application have the following beneficial effects:

[0088] A stretch sponge 100 provided in this embodiment, during the cutting process, only punches a cut 200 on the stretch sponge 100, and then stretches the sponge according to the shape of the cut 200. By stretching, the cut 200 is deformed, so as to obtain a corresponding hole structure 300 on the stretch sponge 100. This cutting method of forming holes by stretching can almost achieve no cutting loss, greatly improve the material utilization rate, and save costs. Since the waste of the stretch sponge 100 is reduced, the production volume of the entire sponge can be reduced, thereby reducing environmental pollution.

[0089] This embodiment also provides a piece of furniture, including the above-mentioned stretch sponge 100, which not only improves the utilization rate of the stretch sponge 100, reduces the total production volume of the stretch sponge 100, and improves production efficiency. It can also form a stable hole structure 300, has good air permeability, is convenient to control the softness and hardness, and improves the comfort of the user experience.

[0090] A cutting tool provided in this embodiment is configured to punch a cut group 210 on the aforementioned stretch sponge 100, with high cutting efficiency, which is beneficial to improving the production efficiency of the stretch sponge 100.

[0091] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A stretch sponge, characterized in that, The stretch sponge is provided with a set of incisions, the set of incisions includes a first row of incisions and a second row of incisions, and each row of the incisions includes a plurality of cutting units arranged at intervals; the cutting unit includes a first straight edge and a second straight edge connected to each other, and the first straight edge and the second straight edge form an opening. The opening directions of the plurality of cutting units in the first row of incisions and the plurality of cutting units in the second row of incisions are opposite and are arranged in a staggered manner in sequence. The adjacent first straight edge and the second straight edge of two adjacent cutting units in the first row of incisions are located within the opening of the same cutting unit in the second row of incisions.

2. The stretched sponge according to claim 1, characterized in that, A plurality of the cutting units in the same row of incisions are arranged at equal intervals in a first direction, the first row of incisions and the second row of incisions in the same set of incisions are arranged at equal intervals in a second direction, and the angle between the first direction and the second direction is 60 degrees to 120 degrees.

3. The stretch sponge according to claim 2, characterized in that, In a single cutting unit, the distance between the first straight edge and the second straight edge in the first direction is L1, the maximum depth of the opening in the second direction is L2, and the ratio of L2 to L1 is 0.3 to 0.

7.

4. The stretched sponge according to claim 3, wherein In the same set of incisions, the minimum distance between the first row of incisions and the second row of incisions in the second direction is L3, and L3 is 10% to 50% of L2.

5. The stretched sponge according to claim 3, wherein The distance between the adjacent first straight edge and the second straight edge of two adjacent cutting units in the same row of incisions is L4, and L4 is 20% to 60% of L1.

6. The stretched sponge according to claim 1, characterized in that, A plurality of the sets of incisions are arranged at equal intervals on the stretch sponge.

7. The stretch sponge according to claim 1, wherein The cutting unit further includes a connecting edge, the first straight edge, the connecting edge and the second straight edge are connected in sequence, the first straight edge and the second straight edge are arranged opposite to each other, and the first straight edge, the connecting edge and the second straight edge form an opening.

8. The stretched sponge according to claim 7, wherein The connecting edge is in a curved shape, a broken line shape or a straight line shape.

9. The stretch sponge according to claim 8, characterized in that, The connecting edge includes a first straight line segment, a second straight line segment and a third straight line segment connected in sequence, one end of the first straight line segment far from the second straight line segment is connected to the first straight edge, and one end of the third straight line segment far from the second straight line segment is connected to the second straight edge.

10. The stretch sponge according to claim 9, characterized in that, In the same opening, the distance between the first straight edge and the second straight edge in the first direction is equal to the length of the second straight line segment in the first direction, and the first direction is the arrangement direction of a plurality of cutting units in the same row of incisions.

11. The stretched sponge according to claim 1, wherein, The distance between two adjacent sets of incisions in the second direction is L5, the maximum depth of the opening in the second direction is L2, and L5 is 1.1 times to 2.5 times of L2.

12. The stretched sponge according to claim 1, wherein, The cutting unit further includes a closing edge, and the first straight edge, the second straight edge and the closing edge are connected end to end in sequence.

13. The stretch sponge according to any one of claims 1 to 12, characterized in that, The thickness of the stretch sponge is 1 cm to 20 cm.

14. A piece of furniture, characterized in that, Including the stretch sponge according to any one of claims 1 to 13.

15. A cutting tool, characterized in that, Configured to form a set of incisions on the stretch sponge according to any one of claims 1 to 13.

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