Production line for manufacturing bio-based sponge

Abstract

The invention relates to the technical field of sponge production, in particular to a bio-based sponge manufacturing assembly line which comprises a rack, a foaming material conveying device, a shaping conveying device, a cutting device, a shaping conveying device, a slitting device and a material warehouse. Through modular design, foaming forming, pressure curing, multi-surface shaping, slitting and storage of the bio-based sponge are integrated into a continuous process. The pre-foaming material is foamed during conveying, and the shaping device promotes molecular chain crosslinking and bubble structure stability through pressure; the cutting and shaping device eliminates deformation through mechanical limiting and pressure correction; the slitting device achieves uniform cutting through a high-precision cutter, and finally automatic storage is completed through a material warehouse. All the stations cooperate to optimize the material performance and the production rhythm, manual intervention is reduced, and the overall efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sponge production, and in particular to a manufacturing pipeline for bio-based sponges. Background Art

[0002] In the traditional manufacturing of bio-based sponges, the production process mostly relies on sectional equipment, and there are the following technical bottlenecks:

[0003] The production efficiency is low. Processes such as foaming, shaping, and cutting need to be operated independently, and the material transfer is frequent, making it difficult to achieve continuous production, resulting in limited production capacity per unit time.

[0004] The dependence on labor is high. Manual assistance for alignment and handling is required in the processes of shaping, slitting, and storage, with low efficiency and easy introduction of human errors, and it is difficult to guarantee product consistency.

[0005] The storage management is inefficient. The cut sponge sheets need to be manually transferred to the warehouse, so it is necessary to make improvements. Summary of the Invention

[0006] The purpose of the present invention is to provide a manufacturing pipeline for bio-based sponges in view of the deficiencies of the prior art. Through modular design, the present application integrates the foaming and forming, pressure curing, multi-sided shaping, slitting, and storage of bio-based sponges into a continuous process. The pre-foamed material is foamed during transportation, and the shaping device promotes the cross-linking of molecular chains and the stability of the bubble structure through pressure; the cutting and shaping device eliminates deformation through mechanical limiting and pressure correction; the slitting device uses high-precision tools to achieve uniform cutting, and finally the material library completes automatic storage. Each work station collaborates to optimize the material properties and production rhythm, reduce manual intervention, and improve the overall efficiency.

[0007] To achieve the above purpose, a manufacturing pipeline for bio-based sponges of the present invention includes a frame, a foaming material conveying device, a shaping conveying device, a cutting device, a shaping conveying device, a slitting device, and a material library.

[0008] The frame is sequentially provided with a foaming station, a curing station, a shaping station, and a slitting station;

[0009] The foaming material conveying device is arranged at the foaming station and is used for conveying the pre-foamed material after mixing and stirring. The pre-foamed material foams and forms a sponge body during transportation and is conveyed to the shaping conveying device;

[0010] The shaping conveying device is arranged at the curing station and is used for conveying the sponge body and applying a certain pressure to promote the curing and shaping of the sponge body;

[0011] The cutting device is arranged between the curing station and the shaping station and is used for cutting the sponge body into sponge blocks;

[0012] The integer conveying device is arranged at the integer working station for rectifying the flatness of the left, right and top sides of the sponge block and conveying it;

[0013] The cutting device is arranged at the cutting working station for cutting the sponge block to form sponge sheets;

[0014] The material storage is arranged on one side of the cutting working station for storing sponge sheets.

[0015] Advantages of the present invention: By integrating the foaming, curing, integer, cutting and storage working stations, the present invention realizes continuous and efficient production, full-process automated assembly line operation, and significantly improves production efficiency;

[0016] The shaping conveying device applies pressure to accelerate the stabilization of the internal structure of the sponge body, reduce the curing time, improve the consistency of material properties, and achieve precise shaping and curing;

[0017] The cutting device and the integer conveying device cooperate to ensure the accurate size and flat surface of the sponge block, reduce the rejection rate, and achieve high-precision cutting and integer;

[0018] The cutting device can stably cut the sponge block into uniform thin sheets, meet the requirements of high-precision products, and achieve quality control of uniform cutting;

[0019] The material storage is directly connected to the cutting working station, reducing manual handling, realizing automated storage, and improving warehousing efficiency and space utilization rate. Description of the Drawings

[0020] Figure 1 It is a top view structural schematic diagram of the present invention.

[0021] Figure 2 It is a side view structural schematic diagram of the foaming material conveying device of the present invention.

[0022] Figure 3 It is a sectional view structural schematic diagram of the equalizer head of the present invention.

[0023] Figure 4 It is a side view structural schematic diagram of the first material receiving conveying mechanism and the bottom side separating cutter of the present invention.

[0024] Figure 5 It is a partial structural schematic diagram of the side wall conveying mechanism of the present invention.

[0025] Figure 6 It is a side view structural schematic diagram of the shaping conveying device of the present invention.

[0026] Figure 7 It is a top view structural schematic diagram of the cutting device and the integer conveying device of the present invention.

[0027] Figure 8 Schematic side view structure diagram of the slitting device of the present invention.

[0028] Figure 9 Schematic front view structure diagram of the material storage of the present invention.

[0029] Reference numerals include:

[0030] 1, frame; 11, foaming station; 12, aging station; 13, shaping station; 14, slitting station;

[0031] 2, foaming material conveying device; 21, mixer; 22, conveying material pipe; 23, equalizing head; 231, housing; 232, confluence tank; 233, filter screen; 234, overflow tank; 235, discharge tank; 236, temperature controller; 237, switching valve; 238, inclination adjustment driver; 24, cooling blower; 25, first material receiving and conveying mechanism; 251, material receiving and conveying frame; 252, material receiving and conveying belt; 253, flexible leak-proof part; 254, material receiving driver; 26, side wall conveying mechanism; 261, side bracket; 262, sliding rail; 263, side wall belt; 264, side wall driver; 265, side separating knife; 266, cleaning knife; 267, recovery tank; 27, bottom side separating tool; 271, blade; 272, guiding and sliding part;

[0032] 3, shaping conveying device; 31, temperature control chamber; 32, shaping conveyor belt; 33, pressure roller group; 34, pressure adjustment driver; 341, driving frame; 342, first folding part; 343, second folding part; 344, frame adjustment driver;

[0033] 4, cutting device; 41, sliding rod; 42, sliding seat; 43, first magnetic attraction mechanism; 44, cross cutting knife; 45, cutting knife driver; 46, switching driver; 47, second magnetic attraction mechanism;

[0034] 5, shaping conveying device; 501, fixed length and positioning point; 51, shaping conveyor belt; 52, side cutting knife; 53, side recovery shaft; 54, top cutting knife; 55, top recovery shaft;

[0035] 6, slitting device; 61, solid material conveying mechanism; 62, slitting frame; 63, slitting driver; 64, layer-by-layer conveying mechanism; 65, slitting knife; 66, coordinated lifting driver; 67, guiding material conveying device; 671, guiding material belt; 672, material transferring belt; 673, temporary storage conveying table;

[0036] 7, material storage; 71, material frame; 72, distance adjustment driver; 73, clamping part; 731, limiting bearing plate; 732, limiter; 74, lifting suction table. Detailed implementation manners

[0037] The present invention will be described in detail below with reference to the accompanying drawings.

[0038] As Figures 1 to 9 shown, a manufacturing assembly line for a bio-based sponge of the present invention includes a frame 1, a foaming material conveying device 2, a shaping conveying device 3, a cutting device 4, a shaping conveying device 5, a slitting device 6, and a storage bin 7.

[0039] The frame 1 is sequentially provided with a foaming station 11, a curing station 12, a shaping station 13, and a slitting station 14;

[0040] The foaming material conveying device 2 is arranged at the foaming station 11 and is used for conveying the pre-foamed material after mixing and stirring. The pre-foamed material foams and forms a sponge body during the conveying process and is transferred to the shaping conveying device 3;

[0041] The shaping conveying device 3 is arranged at the curing station 12 and is used for conveying the sponge body and applying a certain pressure to promote the curing and shaping of the sponge body;

[0042] The cutting device 4 is arranged between the curing station 12 and the shaping station 13 and is used for cutting the sponge body to form sponge blocks;

[0043] The shaping conveying device 5 is arranged at the shaping station 13 and is used for rectifying the flatness of the left, right, and top sides of the sponge blocks and conveying them;

[0044] The slitting device 6 is arranged at the slitting station 14 and is used for slitting the sponge blocks to form sponge sheets;

[0045] The storage bin 7 is arranged on one side of the slitting station 14 and is used for storing the sponge sheets.

[0046] By integrating the foaming, curing, shaping, slitting, and storage stations, continuous and efficient production is achieved, and fully automated assembly line operation is carried out, significantly improving production efficiency.

[0047] The shaping conveying device 3 applies pressure to accelerate the stabilization of the internal structure of the sponge body, reduce the curing time, improve the consistency of material properties, and achieve precise shaping and curing.

[0048] The cutting device 4 and the shaping conveying device 5 cooperate to ensure the precise size and flat surface of the sponge blocks, reduce the rejection rate, and achieve high-precision cutting and shaping.

[0049] The slitting device 6 can stably cut the sponge blocks into uniform thin sheets, meet the requirements of high-precision products, and achieve quality control of uniform slitting.

[0050] The storage bin 7 is directly connected to the slitting station 14, reducing manual handling, achieving automated storage, and improving storage efficiency and space utilization rate.

[0051] In use, through modular design, the present application integrates the foaming and forming, pressure curing, multi-sided shaping, cutting, and storage of the biobased sponge into a continuous process. The pre-expanded material is foamed during transportation. The shaping device promotes the crosslinking of molecular chains and the stability of the bubble structure through pressure; the cutting and shaping device eliminates deformation through mechanical limit and pressure correction; the cutting device 6 uses high-precision tools to achieve uniform cutting, and finally the storage bin 7 completes automatic storage. Each station collaborates to optimize the material properties and production rhythm, reduce manual intervention, and improve the overall efficiency.

[0052] As Figure 2 shown, the foamed material conveying device 2 of this embodiment is provided with a mixer 21, a conveying pipe 22, a distributing head 23, a cooling blower 24, a first material receiving and conveying mechanism 25, a sidewall conveying mechanism 26, and a bottom separation cutter 27.

[0053] The mixer 21 is fixed to the frame 1. The distributing head 23 is suspended above the first material receiving and conveying mechanism 25. The conveying pipe 22 is connected between the mixer 21 and the distributing head 23. The cooling blower 24 is arranged on one side of the distributing head 23 and is used to blow air in the conveying direction of the first material receiving and conveying mechanism 25. The shaping conveying device 3 is arranged at the end of the first material receiving and conveying mechanism 25. The bottom separation cutter 27 is arranged at the end of the first material receiving and conveying mechanism 25 and is used to separate the bottom of the sponge body from the first material receiving and conveying mechanism 25. The sidewall conveying mechanisms 26 are respectively arranged on both sides of the first material receiving and conveying mechanism 25 and extend towards the shaping conveying device 3.

[0054] Specifically, the mixer 21 evenly stirs the pre-expanded material, and combined with the stable conveying of the conveying pipe 22, it solves the problems of uneven material mixing and unstable foaming quality in the traditional process.

[0055] By suspending the distributing head 23 above the first material receiving and conveying mechanism 25, it ensures that the pre-expanded material is evenly distributed on the first material receiving and conveying mechanism 25, avoids local accumulation or vacancy, and reduces waste generation.

[0056] By the directional blowing of the cooling blower 24, the temperature of the free surface of the pre-expanded material facing the blower side is reduced, forming a stable surface "shell", preventing the lateral diffusion or collapse of the material caused by the internal gas expansion during the foaming process, and solving the problems of unstable bubble structure and uneven density of the sponge body in the traditional process. The cooled free surface is flatter and not easily adhered, providing a stable basis for subsequent cutting, and reducing the cutting deviation and rejection rate caused by surface irregularities. The bottom surface of the pre-expanded material in contact with the first material receiving and conveying mechanism 25 is preferentially cured, reducing the overall curing time of the sponge body and solving the problem of low natural cooling efficiency in the traditional process.

[0057] The bottom of the sponge body is automatically separated from the first material receiving and conveying mechanism 25 by the bottom-side separating tool 27 at the end of the first material receiving and conveying mechanism 25, avoiding deformation or damage caused by manual peeling and improving product consistency.

[0058] The sidewall conveying mechanism 26 extends along both sides of the first material receiving and conveying mechanism 25 to the shaping station, forming a wrapped conveying path to prevent the sponge body from laterally shifting or collapsing during conveying and solving the shape defects caused by unstable conveying in the traditional process.

[0059] The first material receiving and conveying mechanism 25 and the sidewall conveying mechanism 26 cooperate to form a multi-directional cooperative conveying, ensuring that the sponge body maintains a complete shape during foaming, cooling, and separation, and reducing the need for manual intervention.

[0060] The foaming material conveying device 2 is seamlessly connected to the subsequent shaping and slitting stations, realizing a fully automated process from foaming to slitting and solving the problems of discrete processes and frequent transfers in the traditional process.

[0061] The specific working method of the foaming material conveying device 2:

[0062] A1. The sponge foaming material is mixed in the mixer 21 to form a pre-foamed material. The pre-foamed material is conveyed to the equalizing head 23 through the conveying pipe 22, and the equalizing head 23 evenly conveys the pre-foamed material to the first material receiving and conveying mechanism 25.

[0063] A2. The cooling blower 24 blows air on the free surface of the pre-foamed material facing the blower side between the equalizing head 23 and the first material receiving and conveying mechanism 25, enabling the contact surface of the pre-foamed material with the first material receiving and conveying mechanism 25 to be shaped faster.

[0064] A3. The pre-foamed material foams and forms a sponge body under the restriction of the sidewall conveying mechanism 26 during the conveying process of the first material receiving and conveying mechanism 25.

[0065] A4. Under the action of the bottom-side separating tool 27, the bottom of the sponge body is separated from the end of the first material receiving and conveying mechanism 25 and is conveyed into the shaping conveying device 3 along with the sidewall conveying mechanism 26.

[0066] The whole process from mixing, cloth feeding, local pre-cooling, foaming to bottom separation, each step is seamlessly connected, forming a continuous production chain, reducing the material transfer link, and significantly improving the overall production efficiency.

[0067] As Figure 3 shown, the equalizing head 23 of this embodiment includes a housing 231, a confluence groove 232, a filter screen 233, an overflow groove 234, a discharge groove 235, and a temperature controller 236.

[0068] The confluence trough 232 and the overflow trough 234 are respectively arranged inside the housing 231. The conveying material pipe 22 is connected to the confluence trough 232. The filter screen 233 is arranged between the confluence trough 232 and the overflow trough 234. The discharge trough 235 is arranged on one side of the overflow trough 234 and is used for outputting the pre-expanded material. The temperature controller 236 is arranged inside the housing 231 for real-time monitoring and adjusting the temperature inside the housing 231;

[0069] A switching valve 237 for controlling the flow rate of the output pre-expanded material is arranged on the discharge trough 235;

[0070] The equalizing head 23 is also provided with an inclination angle adjustment driver 238 for controlling the inclination angle of the equalizing head 23. The housing 231 is hinged to the frame 1. The inclination angle adjustment driver 238 is hinged to the frame 1 and is used for adjusting the inclination angle of the housing 231.

[0071] Specifically, the pre-expanded material enters the confluence trough 232 through the conveying material pipe 22, flows into the overflow trough 234 after impurities are screened out by the filter screen 233, and is finally evenly output by the discharge trough 235, forming a three-stage process of mixing, filtering, and distribution to ensure the material uniformity.

[0072] The temperature controller 236 includes a heating module and a cooling module. The temperature controller 236 feeds back the temperature inside the housing 231 in real time through a sensor, and links the heating module or the cooling module (the heating module is internally provided with a heating wire, and the cooling module is an air-cooling pipeline) to maintain the optimal thermal environment required for foaming and avoid the bubble structure defects caused by temperature fluctuations.

[0073] The inclination angle adjustment driver 238 can dynamically change the inclination angle of the housing 231 according to the speed of the first material receiving and conveying mechanism 25 or the material viscosity requirement, optimize the material flow path and gravity distribution, and ensure uniform material distribution under different working conditions. Specifically, the inclination angle adjustment driver 238 can be a rotary cylinder or a motor.

[0074] The equalizing head 23 solves the problems of uneven materials, out-of-control temperature, and unstable material distribution in the traditional process through integrated filtering, temperature control, and adaptive inclination adjustment, significantly improves the foaming quality and production efficiency of the bio-based sponge, and at the same time enhances the adaptability of the equipment to diverse process requirements.

[0075] Preferably, a scraper, a rotating shaft, and a rotating driver are arranged inside the confluence trough 232. Among them, the scraper is made of an elastic material (such as rubber or silica gel), and the rotating driver is a motor.

[0076] The rotating shaft is rotatably arranged in the confluence trough 232. The scraper is circumferentially arranged on the rotating shaft and is frictionally connected to the filter screen 233. The rotating driver is arranged outside the housing 231 and drives the rotating shaft to rotate, so that the scraper rotates with the rotating shaft, thereby scraping the filter screen 233 to prevent the agglomerates in the pre-expanded material from blocking the filter screen 233.

[0077] A scraping block is provided on the inner wall of the bus bar groove 232. The scraping block is inclined and used to rub against the scraper for cleaning the agglomerates adhered to the surface of the scraper.

[0078] An ion wind bar or an electrostatic eliminator (not shown in the figure) is provided at the outlet of the cooling blower 24 to release positive and negative ions to neutralize the surface charge of the free surface of the pre-foamed material facing the blower side, reducing the electrostatic adsorption force between the pre-foamed material and the first material receiving and conveying mechanism 25.

[0079] Specifically, the distance between the ion wind bar (not shown in the figure) and the free surface of the pre-foamed material facing the blower side is controlled within 10 cm - 30 cm, and the coverage width needs to be greater than the width of the pre-foamed material.

[0080] The distance between the ion wind bar and the free surface of the pre-foamed material facing the blower side is 10 cm, 15 cm, 20 cm, 25 cm or 30 cm. Considering the electrostatic neutralization efficiency, surface quality and energy consumption cost, it is applicable to most bio-based sponge foaming processes, significantly reducing the electrostatic adsorption on the material surface, avoiding impurity contamination or adhesion during slitting. Maintaining the surface uniformity of the pre-foamed material, improving the subsequent cutting accuracy and product qualification rate. Reducing the equipment energy consumption and prolonging the service life of the ion wind bar. When the distance is controlled within 10 cm - 15 cm, it is suitable for the use scenario of thin materials with high static electricity. When the distance is controlled within 15 cm - 20 cm, it is suitable for the use scenario of medium-sized materials with general static electricity. When the distance is controlled within 20 cm - 30 cm, it is suitable for the use scenario of wide-width materials. In actual application, the distance needs to be fine-tuned according to the material characteristics (such as density, thickness, static electricity intensity) and the production line speed.

[0081] As Figure 4 shown, the first material receiving and conveying mechanism 25 of this embodiment includes a material receiving and conveying frame 251, a material receiving and conveying belt 252, a flexible leak-proof member 253 and a material receiving driver 254. Among them, the flexible leak-proof member 253 is made of rubber or silica gel material; the material receiving driver 254 is a reduction motor.

[0082] The material receiving and conveying belt 252 is sleeved on the material receiving and conveying frame 251. The material receiving driver 254 is arranged on the material receiving and conveying frame 251 and is used to drive the material receiving and conveying belt 252 to rotate. The flexible leak-proof member 253 is arranged outside the material receiving and conveying belt 252. Anti-leakage side edges for preventing the pre-foamed material from leaking out and guiding the foaming direction of the pre-foamed material are arranged on both sides of the flexible leak-proof member 253.

[0083] Specifically, through the cooperation of the material receiving conveyor belt 252 and the flexible leak-proof part 253, leak-proof side edges are provided on both sides of the flexible leak-proof part 253, which can effectively prevent the pre-expanded material from leaking during transportation and at the same time guide the foaming direction. The material receiving driver 254 drives the material receiving conveyor belt 252 to rotate through the cooperation of the driving wheel and the driven wheel, realizing automatic material transmission. Reducing manual intervention, improving production efficiency, avoiding waste of pre-expanded materials, and ensuring the stability and consistency of the foaming process. Leak-proof side edges are provided on both sides of the flexible leak-proof part 253 to form a closed structure, preventing the pre-expanded material from overflowing or flowing to uneven areas, and at the same time guiding the foaming direction to ensure the regular shape of the sponge body. Improving the molding quality of the product, reducing waste caused by material leakage, and enhancing product consistency.

[0084] As Figure 4 shown, the bottom separation cutter 27 includes a blade 271 and a guiding and sliding part 272. The blade 271 is arranged at the front end of the guiding and sliding part 272. The blade 271 is tangent to the inner wall of the flexible leak-proof part 253 and is used to separate the bottom of the sponge body from the flexible leak-proof part 253. After the bottom of the sponge body is separated from the flexible leak-proof part 253, it slides along the guiding and sliding part 272 and is conveyed to the shaping conveyor device 3.

[0085] Specifically, the blade 271 remains in tangential contact with the flexible leak-proof part 253, and the physical separation of the bottom of the sponge is synchronously and precisely carried out immediately after foaming using the cutting mechanics principle, ensuring that the shearing force always acts along the tangential interface between the sponge and the mold, and avoiding compression deformation of the sponge body during cutting. Realizing seamless connection between the foaming and cutting processes, avoiding the process of transporting to an independent cutting device after foaming in the traditional process, shortening the production cycle, and increasing the production capacity per unit time.

[0086] The guiding and sliding part 272 adopts an inclined surface or arc surface structure design, and uses gravity and the frictional force on the material surface to form a directional sliding path. The separated sponge body automatically slides into the shaping conveyor device 3 through the guiding and sliding part 272, replacing the manual handling and alignment link, significantly reducing the need for manual intervention, and at the same time eliminating the product form error caused by manual operation.

[0087] Through the physical linkage design of separation by the blade 271 and guiding and conveying, the mechanical automation connection between the separation process and the shaping process is realized. Constructing a continuous production of layered foaming, bottom cutting, and shaping, reducing the material stagnation caused by traditional segmented equipment.

[0088] As Figure 5 shown, the side wall conveying mechanism 26 includes a side bracket 261, a sliding rail 262, a side wall belt 263, a side wall driver 264, a side separation knife 265, a cleaning knife 266, and a recovery tank 267.

[0089] The side bracket 261 is slidably arranged on the sliding rail 262. The side enclosure belt 263 rotates along the side bracket 261. The side enclosure driver 264 drives the side enclosure belt 263 to rotate. The side separating knife 265 is arranged on one side of the side enclosure belt 263 close to the shaping conveying device 3 and is tangentially arranged with the end of the side enclosure belt 263. The cleaning knife 266 is obliquely arranged on the side of the side enclosure belt 263 away from the first material receiving conveying mechanism 25 and is frictionally connected with the side enclosure belt 263. The recovery tank 267 is arranged below the cleaning knife 266.

[0090] Specifically, the side bracket 261 and the sliding rail 262 are connected through a sliding pair, and the position can be adjusted by using the mechanical guiding property of the sliding rail. The distance between the side bracket 261 and the first material receiving conveying mechanism 25 is controlled by a driving mechanism (such as a motor or a cylinder) to adapt to the conveying requirements of sponge products of different sizes.

[0091] The side enclosure belt 263 forms a closed annular transmission path through the side bracket 261. The side enclosure driver 264 (such as a driving module of a servo motor and a synchronous pulley or an electric roller, and in this embodiment, an electric roller is taken as an example) provides power to make the side enclosure belt 263 rotate, thereby driving the displacement of the sponge body adhered to the side enclosure belt 263 and realizing the directional continuous conveying of the sponge body.

[0092] The side separating knife 265 is installed on one side of the side enclosure belt 263 close to the shaping conveying device 3, and the cutting edge of the side separating knife 265 keeps geometric tangency with the end of the side enclosure belt 263. The continuous movement of the side enclosure belt 263 is used to synchronously trigger the cutting action. The tangential setting makes the cutting direction of the cutting edge of the side separating knife 265 consistent with the movement track of the sponge body. When cutting, the conveying power of the side enclosure belt 263 on the sponge body is directly converted into shear stress (instead of vertical extrusion pressure), avoiding the compression and collapse of the sponge pore structure. When the sponge body is conveyed to the end by the side enclosure belt 263, the side separating knife 265 immediately completes the cutting and directly falls into the shaping conveying device 3, eliminating the positioning link before cutting in the traditional process.

[0093] The cleaning knife 266 is closely attached to the surface of the side enclosure belt 263 at an inclination angle of 20° - 25°. The adhered debris is removed by dynamic scraping (the principle is similar to the "scraper effect"). The contact pressure between the cleaning knife 266 and the surface of the side enclosure belt 263 is adaptively adjusted by a spring mechanism. Keep the surface of the side enclosure belt 263 clean, avoid secondary pollution of the product by debris, improve the yield rate, and compared with the traditional process, there is no need to use a separation film to carry and isolate the sponge body, making sponge production more environmentally friendly and with lower costs.

[0094] The recovery tank 267 collects debris by gravity. Inside the recovery tank 267, there are a diversion inclined plane, an outer housing, and a recovery port. The inclination angle of the diversion inclined plane is 8° - 12°. The debris is concentrated and guided to the recovery port through the diversion inclined plane, and is collected by connecting a negative pressure dust collection system to the recovery port. The outer housing covers the outside of the cleaning blade 266, facilitating the debris to fall into the recovery tank 267 and reducing the dust concentration in the workshop.

[0095] As Figure 6 shown, the shaping and conveying device 3 of this embodiment includes a temperature control chamber 31, a shaping conveyor belt 32, a pressure roller group 33, and a pressure adjustment drive 34.

[0096] The temperature control chamber 31 is arranged at the curing station and is used to control the temperature of the sponge body curing. The side enclosure conveying mechanism 26 extends into the front end of the temperature control chamber 31. The shaping conveyor belt 32 is arranged inside the temperature control chamber 31 and is used to carry and convey the sponge body. The pressure roller group 33 is arranged in the middle of the temperature control chamber 31 and is used to apply pressure to the sponge body to promote the discharge of gas inside the sponge body. The pressure adjustment drive 34 is arranged on the top of the temperature control chamber 31 and is used to adjust the lifting of the pressure roller group 33.

[0097] Specifically, the temperature control chamber 31 integrates a temperature control module (such as PID temperature control + infrared heating plate), and maintains the optimal temperature (50 - 80°C) required for sponge curing through a uniform heat field distribution. The temperature uniformity ensures sufficient cross-linking reaction of the sponge body. The curing time is shortened from 120 minutes of traditional natural cooling to 20 minutes, improving the curing efficiency.

[0098] The shaping conveyor belt 32 is woven with high-temperature resistant aramid fibers (temperature resistance 250°C), and the belt surface is provided with micropores (pore diameter 0.5mm), allowing hot air to penetrate the sponge body to achieve three-dimensional uniform curing. The conveyor belt speed is synchronized with the side enclosure conveying mechanism 26 (0.2 - 1m / s), eliminating the time-consuming link of transferring to an independent curing furnace in the traditional process.

[0099] The pressure roller group 33 applies a gradient pressure (5 - 50kPa) to the sponge body to gradually discharge the internal gas; the surface of the roller is designed with spiral patterns, superimposing a tangential shear force under the vertical pressure to break the closed-cell bubbles, reducing the closed-cell rate of the sponge and improving the resilience performance.

[0100] The pressure adjustment drive 34 controls the lifting of the pressure roller group 33. Specifically, the drive uses a cylinder or a direct linear motor. One end of the pressure adjustment drive 34 is hinged to the frame 1, and the other end of the pressure adjustment drive 34 is hinged to the pressure roller group 33. The height of the roller is adjusted in real time through the feedback of the pressure sensor to achieve adaptive control of the driving pressure and the sponge density.

[0101] The side wall conveying mechanism 26 feeds the sponge into the conditioning chamber 31. The shaping conveyor belt 32 conveys the sponge at a constant temperature, and cooperates with the pressure roller group 33 to exhaust air synchronously, forming a fully enclosed production line for foaming, curing and shaping. The whole process from conveying, temperature control to exhaust is automated, reducing 5 links such as manual temperature measurement, pressure regulation and handling in the traditional process, and reducing the labor cost.

[0102] As Figure 6 shown, preferably, the pressure adjustment drive 34 is provided with a drive frame 341. The drive frame 341 includes a first folding part 342 and a second folding part 343. One end of the first folding part 342 is hinged to one end of the second folding part 343. The pressure roller group 33 is rotatably arranged on the first folding part 342 and the second folding part 343. The first folding part 342 is fixed to the drive frame 341. One end of the first folding part 342 is hinged to one end of the second folding part 343. A frame adjustment drive 344 is also hinged between the drive frame 341 and the second folding part 343. The frame adjustment drive 344 is used to adjust the included angle between the first folding part 342 and the second folding part 343, so as to adjust the inclination angle between the first folding part 342 and the second folding part 343, so that the pressure roller group 33 applies pressure to the sponge body obliquely, so as to realize gradually increasing the pressure on the sponge body.

[0103] As Figure 7 shown, in this embodiment, the shaping and conveying device 5 is provided with a plurality of fixed-length positioning points 501 at intervals along the length direction, and the plurality of fixed-length positioning points 501 move along the conveying direction of the shaping and conveying device 5;

[0104] The cutting device 4 includes a sliding rod 41, a sliding seat 42, a first magnetic attraction mechanism 43, a transverse cutting knife 44, a cutter drive 45, a switching drive 46 and a second magnetic attraction mechanism 47.

[0105] The sliding rod 41 is arranged along the length direction of the shaping and conveying device 5. The sliding seat 42 is slidably connected to the sliding rod 41. The first magnetic attraction mechanism 43 is arranged on the sliding seat 42 and is used to control the connection or disconnection between the sliding seat 42 and the fixed-length positioning point 501. The transverse cutting knife 44 is used to cut the sponge body to form sponge blocks. The cutter drive 45 is arranged on the sliding seat 42 and is used to drive the transverse cutting knife 44 to move up and down. The switching drive 46 is used to drive the second magnetic attraction mechanism 47 to capture or release the sliding seat 42.

[0106] Specifically, the sliding rod 41 is used as a high-precision linear guide rail, and the sliding seat 42 is internally provided with a linear bearing to realize the gapless translation of the cutting device along the conveying direction. During the cutting process, the sliding seat 42 moves synchronously with the sponge body, eliminating the pulling deformation during the cutting of the traditional fixed knife seat and improving the perpendicularity of the product edge.

[0107] The fixed-length positioning point 501 is a magnetic adsorbent, and the first magnetic adsorption mechanism 43 is an electromagnet. After being energized, it generates a magnetic attraction force (≥50N) to instantaneously control the connection between the sliding seat 42 and the fixed-length positioning point 501. A rigid connection is formed between the sliding seat 42 and the fixed-length positioning point 501, enabling the sliding seat 42 to move along with the conveyor belt of the conveying device. After the connection between the sliding seat 42 and the fixed-length positioning point 501 is triggered, the cutter driver 45 drives the cross cutter 44 to descend to cut the sponge body into sponge blocks. After the cutting operation is completed, the first magnetic adsorption mechanism 43 controls the disconnection between the sliding seat 42 and the fixed-length positioning point 501, facilitating the capture by the second magnetic adsorption mechanism 47.

[0108] The cutter driver 45 adopts a drive module combining a servo motor and a ball screw or a linear motor to drive the cross cutter 44 to vertically lift and lower, and the cutting edge 271 is orthogonally cut into the sponge body plane. The roughness of the cutting surface is reduced, and secondary grinding is not required.

[0109] The switching driver 46 is a cylinder or a linear motor drive module, which pushes the second magnetic adsorption mechanism 47 to quickly magnetically adsorb and capture or release the sliding seat 42; the second magnetic adsorption mechanism 47 is an electromagnet. After the cutting operation is completed, the switching driver 46 drives the energized second magnetic adsorption mechanism 47 to capture the sliding seat 42 and push the sliding seat 42 to return to the original position. After the sliding seat 42 is reset, the sliding seat 42 is released to facilitate the cutting operation again. Through the mutual cooperation of the sliding rod 41, the sliding seat 42, the first magnetic adsorption mechanism 43, the cross cutter 44, the cutter driver 45, the switching driver 46, and the second magnetic adsorption mechanism 47, a cyclic operation of "follow-up cutting - return" is achieved.

[0110] As Figure 7 shown, the shaping and conveying device 5 of this embodiment includes a shaping conveyor belt 51, side cutters 52, side recovery shafts 53, top cutters 54, and top recovery shafts 55.

[0111] The shaping conveyor belt 51 is used to carry and convey sponge blocks, and the fixed-length positioning point 501 is set at the edge of the shaping conveyor belt 51 and moves along with the rotation of the shaping conveyor belt 51.

[0112] The side cutters 52 are respectively arranged on both sides of the shaping conveyor belt 51 to cut the left and right sides of the sponge blocks, and the side recovery shafts 53 are arranged on one side of the side cutters 52 to recover the cut sponge waste.

[0113] The top cutter 54 is arranged above the shaping conveyor belt 51 to cut the top side of the sponge blocks, and the top recovery shafts 55 are arranged on one side of the top cutters 54 to recover the cut sponge waste.

[0114] Specifically, the shaping conveyor belt 51 is a conventional plastic chain plate conveyor belt or a vacuum adsorption conveyor belt. The fixed-length positioning point 501 is fixed on the edge and moves with the rotation of the shaping conveyor belt 51. At the same time, a dynamic position scale is formed on the conveyor belt through the fixed-length positioning point 501, and the cutting position of the sponge body is feedback in real time, so that the lengths of the cut sponge blocks are consistent.

[0115] The side cutting knives 52 on both sides adopt servo synchronous control technology to control the relative position of the cutting edges 271 and the sponge block. Cooperating with the shaping conveyor belt 51 to convey the sponge block towards the side cutting knives 52, the left and right sides of the sponge block are cut synchronously and equidistantly; the side recovery shaft 53 winds and recovers the cutting waste directly through negative pressure adsorption or electrostatic winding, avoiding accumulation on the ground.

[0116] The top cutting knife 54 is horizontally arranged above the shaping conveyor belt 51. Cooperating with the shaping conveyor belt 51 to convey the sponge block towards the top cutting knife 54, the top side of the sponge block is cut. The top recovery shaft 55 winds and recovers the cutting waste directly through negative pressure adsorption or electrostatic winding, avoiding accumulation on the ground.

[0117] As Figure 8 shown, the cutting device 6 of this embodiment includes a solid material conveying mechanism 61, a cutting frame 62, a cutting driver 63, a layered conveying mechanism 64, a cutting knife 65 and a cooperative lifting driver 66.

[0118] The solid material conveying mechanism 61 is used to fix the sponge block sorted by the shaping conveying device 5. The number of the layered conveying mechanism 64, the cutting knife 65 and the cooperative lifting driver 66 is multiple. The multiple layered conveying mechanisms 64 are stacked in the cutting frame 62 in a stepped manner and indented from top to bottom. The multiple cutting knives 65 are respectively arranged at one end of the multiple layered conveying mechanisms 64, and the multiple cooperative lifting drivers 66 are respectively arranged corresponding to the multiple layered conveying mechanisms 64 and are used to drive each layered conveying mechanism 64 to rise or fall in the cutting frame 62. The cutting driver 63 is used to drive the cutting frame 62 to move along the conveying direction of the solid material conveying mechanism 61.

[0119] Specifically, the solid material conveying mechanism 61 is vacuum negative pressure conveying, which applies multi-directional binding force to the shaped sponge block to eliminate displacement and vibration during the cutting process. In other embodiments, the solid material conveying mechanism 61 can also be a mechanical clamping jaw or a vacuum suction cup manipulator.

[0120] The multiple layered conveying mechanisms 64 are vertically arranged in a stepped manner (each layer is indented by 5 - 300 mm). Each layered conveying mechanism 64 forms multiple parallel cutting channels to realize single-time cutting of multi-level cascaded operations. The number of layers cut at one time is increased from the traditional 1 - 2 layers to 5 - 10 layers, improving the efficiency; the stepped indentation design avoids tool interference.

[0121] Each layer of cutting knife 65 is rigidly connected to the corresponding layer conveying mechanism 64. The cutting edge 271 uses high-frequency vibration technology (amplitude 0.1 mm, frequency 20 kHz) to achieve micron-level cutting. It reduces the roughness of the cut, eliminating the need for secondary processing; and reduces the tool resistance through vibration cutting.

[0122] The coordinated lifting drive 66 is a drive module combined with an electric cylinder and an encoder or a linear motor drive module, independently controlling the lifting height of each layer of the layer conveying mechanism 64 to adapt to different thickness cutting requirements.

[0123] Multiple layer conveying mechanisms 64, multiple cutting knives 65, and multiple coordinated lifting drives 66 are all arranged on the cutting frame 62. The cutting drive 63 uses a drive module of a servo motor and a ball screw or a cylinder to drive the cutting frame 62 to move along the conveying direction of the solid material conveying mechanism 61 through a linear guide rail, so that multiple cutting knives 65 can cut the sponge block into multiple sponge sheets, and multiple layer conveying mechanisms 64 respectively convey the sponge block.

[0124] As Figure 8 shown, the cutting device 6 of this embodiment is further provided with a guiding and conveying device 67 for conveying sponge sheets to the material storage 7, and the guiding and conveying device 67 is arranged on the cutting frame 62;

[0125] The guiding and conveying device 67 includes a guiding belt 671, a material conveying belt 672, and a temporary storage and conveying table 673. The material conveying belt 672 is arranged on one side of the solid material conveying mechanism 61 for conveying sponge sheets and waste materials;

[0126] The number of guiding belts 671 is multiple, and multiple guiding belts 671 are arranged in one-to-one correspondence with multiple layer conveying mechanisms 64 and are located above the material conveying belt 672;

[0127] The temporary storage and conveying table 673 is arranged at the end of the material conveying belt 672 for temporarily storing sponge sheets and waste materials.

[0128] Specifically, each layer of guiding belt 671 is connected to the corresponding layer conveying mechanism 64 through a telescopic connecting piece 6711 to form an independent guiding channel, ensuring that the cut sponge sheets are directionally shunted and conveyed to the material conveying belt 672 by layer, and then conveyed to the temporary storage and conveying table 673 through the material conveying belt 672.

[0129] Preferably, the solid material conveying mechanism 61 conveys the waste materials remaining after cutting the sponge body into sponge sheets to the material conveying belt 672, and then the material conveying belt 672 conveys the waste materials to the temporary storage and conveying table 673. The temporary storage and conveying table 673 can integrate an optoelectronic sensor to identify sponge sheets and waste materials, and the waste materials are introduced into the recovery tank 267 through a sorting robotic arm or a tipping mechanism.

[0130] Preferably, the material guiding belt 671 includes a telescopic connecting member 6711, a first material guiding conveyor belt 6712, and a second material guiding conveyor belt 6713. One end of the telescopic connecting member 6711 is connected to the layered conveying mechanism 64, and the other end of the telescopic connecting member 6711 is connected to the first material guiding conveyor belt 6712 of the layered conveying mechanism 64. The second material guiding conveyor belt 6713 is inclined and arranged on the side of the first material guiding conveyor belt 6712 away from the telescopic connecting member 6711;

[0131] Specifically, the telescopic connecting member 6711 adopts a conventional telescopic belt conveyor, such as a modular chain plate telescopic conveyor or a pneumatic telescopic roller conveyor, to achieve the dynamic following of the material guiding belt 671 and the cut layer; the first material guiding belt 671 horizontally receives the sponge sheet, and the second material guiding belt 671 is inclined to convey the sponge sheet so that the sponge sheets are gathered on the material conveying belt 672.

[0132] Such as Figure 9 As shown, the material storage 7 of this embodiment includes a material frame 71, a distance adjusting driver 72, a clamping member 73, and a lifting suction table 74.

[0133] The material frame 71 is arranged on one side of the cutting device 6. The number of the distance adjusting drivers 72 and the clamping members 73 is both two. The two clamping members 73 are relatively arranged in the material frame 71. The two distance adjusting drivers 72 are arranged in one-to-one correspondence with the two clamping members 73 and are used to drive the two clamping members 73 to approach or move away from each other;

[0134] The lifting suction table 74 is used to lift and adsorb the sponge sheet and place it in the material frame 71.

[0135] Specifically, the two distance adjusting drivers 72 (such as servo electric cylinders) drive the clamping members 73 to move towards or away from each other, and the clamping force is controlled through force feedback to adapt to sponge sheets of different sizes and keep the sponge sheets in the material frame 71. When the two distance adjusting drivers 72 drive the clamping members 73 towards each other, the sponge sheet is clamped. When the two distance adjusting drivers 72 drive the clamping members 73 away from each other, the sponge sheet is released.

[0136] The lifting suction table 74 is internally provided with negative pressure holes (vacuum degree -60 kPa) to adsorb the bottom surface of the sponge sheet. The release or adsorption of the sponge sheet is controlled through negative pressure to avoid surface indentations caused by traditional clamping jaws. The lifting suction table 74 is driven to lift and lower by a servo electric cylinder or a linear motor. Preferably, the size of the lifting suction table 74 is smaller than the distance between the two clamping members 73 to avoid interference between the lifting and lowering of the lifting suction table 74 and the clamping members 73.

[0137] During use, the sponge sheet is placed on the lifting suction table 74 manually or by a manipulator. The lifting suction table 74 adsorbs the sponge sheet and lifts it into the material frame 71. The distance adjusting driver 72 is used to drive the clamping members 73 towards each other to clamp the sponge sheet, and the lifting suction table 74 descends and resets so that the sponge sheet is stored in the material storage 7.

[0138] Preferably, a limit bearing plate 731 and a limiter 732 are provided at the lower part of the clamping member 73. The limit bearing plate 731 is rotatably arranged with the clamping member 73. The limiter 732 is fixedly connected with the clamping member 73 and is used to limit the downward turning of the limit bearing plate 731 and keep it in a horizontal state. The sponge sheet is restricted by the horizontal limit bearing plate 731, so that the sponge sheet is kept in the material frame 71.

[0139] The bearing plate can be turned upwards by 90° and is blocked by the limiter 732 to keep horizontal downward, forming a temporary material tray; the limiter 732 locks the limit bearing plate 731 through a ratchet mechanism or a limit plate. In the embodiment, the limiter 732 is taken as an example of the limit plate, and the bearing weight of the limit plate is ≥50 kg.

[0140] Preferably, in order to place more layers of sponge sheets in the material frame 71, a partition plate can be placed every 10 or 20 sponge sheets, and the partition plate is used to prevent the sponge sheet at the bottom from pressing on the surface of the sponge sheet on the limit bearing plate 731 to have indentations.

[0141] The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. The content of this specification should not be construed as a limitation to the present invention.

Claims

1. A production line for bio-based sponge, characterized in that: It comprises a frame (1), a foaming material conveying device (2), a shaping conveying device (3), a cutting device (4), a shaping conveying device (5), a slitting device (6) and a material storage (7). The frame (1) is provided with a foaming station (11), a curing station (12), a shaping station (13) and a slitting station (14) in sequence; The foaming material conveying device (2) is arranged at the foaming station (11) and is used to convey the pre-foamed material after mixing and stirring. The pre-foamed material is foamed and formed into a sponge during the conveying process and is conveyed to the shaping conveying device (3); The shaping and conveying device (3) is arranged at the maturation station, and is used to convey the sponge and apply a certain pressure to promote maturation and shaping of the sponge; The cutting device (4) is arranged between the aging station and the shaping station, and is used to cut the sponge body into sponge blocks; The shaping and conveying device (5) is arranged at the shaping station and is used for arranging the straightness of the left side, the right side and the top side of the sponge block and conveying the sponge block; The slitting device (6) is arranged at the slitting station and is used to slitting the sponge block into sponge sheets; The material storehouse (7) is arranged on one side of the slitting station and is used to store the sponge sheets.

2. The production line of a bio-based sponge according to claim 1, characterized in that: The foaming material conveying device (2) is provided with a mixer (21), a material conveying pipe (22), an equalizing head (23), a cold and dry blower (24), a first material receiving and conveying mechanism (25), a side surrounding conveying mechanism (26) and a bottom side separating tool (27). The mixer (21) is fixed to the frame (1); the divider (23) is suspended above the first material receiving and conveying mechanism (25); the conveying pipe (22) is connected between the mixer (21) and the divider (23); the cold air blower (24) is arranged on one side of the divider (23) and blows air in the conveying direction of the first material receiving and conveying mechanism (25); the shaping conveying device (3) is arranged at the end of the first material receiving and conveying mechanism (25); the bottom side separation tool (27) is arranged at the end of the first material receiving and conveying mechanism (25) and is used to separate the bottom of the sponge from the first material receiving and conveying mechanism (25); the side conveying mechanism (26) is respectively arranged on both sides of the first material receiving and conveying mechanism (25) and extends in the direction of the shaping conveying device (3); The specific working method of the foaming material conveying device (2) is as follows: A1. The sponge foaming material is mixed in the mixer (21) to form a pre-foamed material, and the pre-foamed material is transported to the equalizing head (23) through the conveying pipe (22), and the equalizing head (23) uniformly transports the pre-foamed material to the first material receiving and conveying mechanism (25); A2. The cold blower (24) blows air toward the free surface of the pre-foamed material between the dividing head (23) and the first material receiving and conveying mechanism (25) toward one side of the blower, so that the contact surface between the pre-foamed material and the first material receiving and conveying mechanism (25) is shaped more quickly; A3. The pre-foamed material is foamed and formed into a sponge body under the restriction of the side conveying mechanism (26) during the conveying process of the first material receiving conveying mechanism (25); A4. Under the action of the bottom separation tool (27), the bottom of the sponge is separated from the end of the first material receiving and conveying mechanism (25) and enters the shaping and conveying device (3).

3. The production line of a bio-based sponge according to claim 2, characterized in that: The dividing head (23) comprises a housing (231), a confluence trough (232), a filter screen (233), an overflow trough (234), a discharge trough (235) and a temperature controller (236). The confluence trough (232) and the overflow trough (234) are respectively arranged inside the shell (231); the conveying pipe (22) is connected to the confluence trough (232); the filter screen (233) is arranged between the confluence trough (232) and the overflow trough (234); the discharge trough (235) is arranged on one side of the overflow trough (234) and is used to output the pre-foamed material; and the temperature controller (236) is arranged inside the shell (231) and is used to monitor and adjust the temperature inside the shell (231) in real time.

4. The production line of a bio-based sponge according to claim 2, characterized in that: The first material receiving and conveying mechanism (25) comprises a material receiving and conveying frame (251), a material receiving and conveying belt (252), a flexible leak-proof member (253) and a material receiving and driving device (254). The material receiving conveyor belt (252) is sleeved on the material receiving conveyor frame (251), the material receiving driver (254) is arranged on the material receiving conveyor frame (251) and is used to drive the material receiving conveyor belt (252) to rotate, the flexible leak-proof component (253) is arranged on the outside of the material receiving conveyor belt (252), and both sides of the flexible leak-proof component (253) are provided with leak-proof side edges for preventing the pre-foamed material from leaking out and guiding the foaming direction of the pre-foamed material; The bottom side separation tool (27) comprises a blade (271) and a guide slide (272), wherein the blade (271) is arranged at the front end of the guide slide (272), the blade (271) is arranged tangentially to the inner wall of the flexible leak-proof member (253) and is used to separate the bottom of the sponge from the flexible leak-proof member (253), and after the bottom of the sponge is separated from the flexible leak-proof member (253), it slides along the guide slide (272) and is transported to the shaping and conveying device (3); The side enclosure conveying mechanism (26) comprises a side bracket (261), a sliding rail (262), a side enclosure belt (263), a side enclosure driver (264), a side separation knife (265), a cleaning knife (266) and a recovery trough (267). The side bracket (261) is slidably placed on the sliding rail (262), the side belt (263) rotates along the side bracket (261), the side belt driver (264) drives the side belt (263) to rotate, the side separation knife (265) is arranged on the side of the side belt (263) close to the shaping conveying device (3) and is tangentially arranged with the end of the side belt (263), the cleaning knife (266) is obliquely arranged on the side of the side belt (263) away from the first material receiving conveying mechanism (25) and is frictionally connected with the side belt (263), and the recovery groove (267) is arranged below the cleaning knife (266).

5. The production line of a bio-based sponge according to claim 2, characterized in that: The shaping conveying device (3) comprises a temperature-control room (31), a shaping conveying belt (32), a pressure roller group (33) and a pressure adjustment driver (34). The temperature-controlled chamber (31) is arranged at the maturation station and is used to control the temperature of the sponge maturation; the side conveying mechanism (26) extends into the front end of the temperature-controlled chamber (31); the shaping conveying belt (32) is arranged in the temperature-controlled chamber (31) and is used to carry and convey the sponge; the pressure roller group (33) is arranged in the middle of the temperature-controlled chamber (31) and is used to apply pressure to the sponge to promote the discharge of gas inside the sponge; the pressure adjustment driver (34) is arranged at the top of the temperature-controlled chamber (31) and is used to adjust the lifting and lowering of the pressure roller group (33).

6. The production line of a bio-based sponge according to claim 1, characterized in that: The shaping conveying device (5) is provided with a plurality of fixed-length positioning points (501) at intervals along the length direction, and the plurality of fixed-length positioning points (501) move along the conveying direction of the shaping conveying device (5); The cutting device (4) comprises a sliding rod (41), a sliding seat (42), a first magnetic attraction mechanism (43), a cross-cutting knife (44), a cutter driver (45), a switching driver (46) and a second magnetic attraction mechanism (47). The sliding rod (41) is arranged along the length direction of the shaping conveying device (5), the sliding seat (42) is slidably connected to the sliding rod (41), the first magnetic attraction mechanism (43) is arranged on the sliding seat (42) and is used to control the connection or disconnection of the sliding seat (42) and the fixed-length positioning point (501), the cross-cutting knife (44) is used to cut the sponge body to form a sponge block, the cutting knife driver (45) is arranged on the sliding seat (42) and is used to drive the cross-cutting knife (44) to rise and fall, and the switching driver (46) is used to drive the second magnetic attraction mechanism (47) to capture the sliding seat (42) or release the sliding seat (42).

7. The production line of a bio-based sponge according to claim 6, characterized in that: The shaping conveying device (5) comprises a shaping conveying belt (51), a side cutting knife (52), a side recovery shaft (53), a top cutting knife (54) and a top recovery shaft (55). The shaping conveyor belt (51) is used to carry and convey the sponge block, and the fixed-length positioning point (501) is arranged on the edge of the shaping conveyor belt (51) and moves as the shaping conveyor belt (51) rotates; The side cutters (52) are respectively arranged on both sides of the shaping conveyor belt (51) and cut the left and right sides of the sponge block, and the side recovery shaft (53) is arranged on one side of the side cutters (52) to recover the cut sponge waste; The top cutter (54) is arranged above the shaping conveyor belt (51) and cuts the top side of the sponge block, and the top recovery shaft (55) is arranged on one side of the top cutter (54) and recovers the cut sponge waste.

8. The production line of a bio-based sponge according to claim 1, characterized in that: The slitting device (6) comprises a solid material conveying mechanism (61), a slitting frame (62), a slitting driver (63), a layered conveying mechanism (64), a slitting knife (65) and a coordinated lifting driver (66). The solid material conveying mechanism (61) is used to fix the sponge blocks sorted by the shaping conveying device (5). The number of the layered conveying mechanism (64), the slitting knife (65) and the coordinated lifting driver (66) are all multiple. The multiple layered conveying mechanisms (64) are stacked in the slitting frame (62) in a step-by-step manner from top to bottom. The multiple slitting knives (65) are respectively arranged at one end of the multiple layered conveying mechanisms (64) in a one-to-one correspondence. The multiple coordinated lifting drivers (66) are respectively arranged corresponding to the multiple layered conveying mechanisms (64) and are used to drive each layered conveying mechanism (64) to rise or fall. The slitting driver (63) is used to drive the slitting frame (62) to move along the solid material conveying mechanism (61).

9. The production line of a bio-based sponge according to claim 8, characterized in that: The slitting device (6) is further provided with a material guiding and conveying device (67) for conveying the sponge sheet to the material storage (7), and the material guiding and conveying device (67) is arranged on the slitting frame (62); The material guiding and conveying device (67) comprises a material guiding belt (671), a material conveying belt (672) and a temporary storage conveying platform (673); the material conveying belt (672) is arranged on one side of the solid material conveying mechanism (61) and is used for conveying sponge sheets and waste materials; The number of the guide belts (671) is multiple, and the multiple guide belts (671) are arranged in one-to-one correspondence with the multiple layered conveying mechanisms (64) and are located above the transfer belt (672); The temporary storage conveying platform (673) is arranged at the end of the material conveying belt (672) and is used for temporarily storing sponge sheets and waste materials.

10. The production line of a bio-based sponge according to claim 1, characterized in that: The material storage (7) comprises a material frame (71), a distance adjustment driver (72), a clamping member (73) and a lifting suction platform (74). The material frame (71) is arranged at one side of the slitting device (6); the number of the distance adjusting drivers (72) and the number of the clamping members (73) are both two; the two clamping members (73) are arranged opposite to each other in the material frame (71); the two distance adjusting drivers (72) and the two clamping members (73) are arranged in a one-to-one correspondence and are used to drive the two clamping members (73) to move closer to or farther from each other; The lifting and suction platform (74) is used to lift and absorb the sponge sheet so that it rises and is placed in the material frame (71).

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