Office chair sponge drying device

Abstract

The invention discloses an office chair sponge drying device, and relates to the technical field of office furniture production and processing, the office chair sponge drying device comprises a drying device, and the side, close to a collecting tank, of the drying device is provided with an elastic floating roller type extrusion mechanism; through the arrangement of a double-domain linkage regulation and control mechanism, the angle of a flow guide plate is dynamically adjusted according to the thickness difference of sponges so as to adjust the flow direction of hot air, for thick sponges, the inclination angle of the flow guide plate is increased, hot air can vertically penetrate through the interiors of the sponges, vaporization of internal moisture is accelerated, and the problem that the interiors are insufficient in dryness due to the fact that the surface layers are too hot is solved; the angle of the flow guide plate is reduced, hot air is dispersed, the hot air is transversely laid to cover the surface, surface layer moisture is rapidly evaporated, carbonization or embrittlement caused by vertical heat flow concentration is prevented, the contact area and angle of the hot air and the sponge can be matched for use through dynamic adjustment of the flow guide plate, and the average drying time of the sponge with different thicknesses is shortened. And invalid loss and excessive concentration of heat are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of office furniture production and processing, in particular to a sponge drying device for an office chair. Background Art

[0002] In office chair manufacturing, sponge serves as a core cushioning and support material, and its drying process directly impacts the product's comfort, durability, and lifespan. The unique porous structure of sponge easily retains a large amount of moisture after production. Inadequate drying not only breeds mold and odor, but also reduces the sponge's elasticity and mechanical properties, seriously impacting the user experience and safety of the office chair. Therefore, high-performance drying equipment is crucial to ensuring high-quality office chair production.

[0003] Currently, most common office chair sponge drying devices on the market use hot air drying. As a porous polymer material, sponges contain numerous closed and semi-closed pores, typically holding 30% to 60% moisture. This moisture exists primarily in three forms: adsorbed water, capillary water, and retained water. Capillary water and retained water are retained within the sponge by surface tension and the constraints of the pore structure, making them difficult to drain naturally. When the moisture content is too high, the large amount of residual water causes excessive heat loss in the dryer. The energy absorbed by the water molecules during high-frequency oscillations is preferentially used to heat themselves and vaporize, significantly reducing the effective energy transferred to the sponge matrix. Experimental data shows that when the sponge moisture content exceeds 40%, the dryer's ineffective energy loss can reach 35% to 45%, significantly increasing the device's energy consumption. Furthermore, the "water clusters" formed within the sponge hinder uniform heat penetration, leading to severe temperature gradients during the drying process. The moisture on the sponge surface evaporates rapidly due to direct contact with heat, resulting in local overheating (the surface temperature can reach above 80°C), and the internal moisture cannot be discharged in time, forming a "cold core" area, causing the drying uniformity deviation to exceed 20%, seriously affecting the physical properties and dimensional stability of the sponge.

[0004] Furthermore, sponges with excessive moisture content can generate internal steam pressure during the drying process due to evaporation, leading to bulging, deformation, and even cracking. This structural damage not only reduces product yield but also impairs the sponge's mechanical properties, reducing compression rebound by 15% to 25%, impacting the comfort and lifespan of office chairs. Furthermore, high moisture content prolongs the drying cycle, reducing the equipment's productivity per unit time by approximately 30% to 40%, making it unable to meet the efficiency requirements of industrial production.

[0005] Existing equipment lacks a mechanism to adapt to the thickness of sponges when circulating hot air. For thick sponges, conventional hot air can only form convection on the surface, making it difficult to penetrate the dense internal structure. This results in excessively high temperatures on the sponge's surface while the center remains damp, creating an undesirable "dry outside, wet inside" phenomenon that seriously affects the sponge's physical properties and uniformity. For thin sponges, the constant hot air flow and velocity can easily cause surface overheating and carbonization. Field measurements have shown that when using existing equipment to dry sponges less than 5cm thick, the surface carbonization rate can reach as high as 25%, severely damaging the sponge's appearance and performance.

[0006] Furthermore, the flapping mechanism lacks synergistic regulation with the extrusion and hot air systems. Patting is a key step in restoring the sponge's fluffy structure and accelerating heat penetration, but existing equipment often uses a fixed frequency and force. This prevents thick sponges from effectively restoring their pore structure through flapping, hindering hot air penetration and resulting in low drying efficiency. Thin sponges can also tear and break due to excessive flapping.

[0007] Therefore, the present invention proposes an office chair sponge drying device to solve the above problems. Summary of the Invention

[0008] In view of the deficiencies in the prior art, the present invention provides an office chair sponge drying device to solve the problems raised in the above background technology.

[0009] To achieve the above-mentioned object, the present invention provides the following technical solution: an office chair sponge drying device, comprising: a drying device, a conveyor belt provided inside the drying device, a collection trough provided at the bottom of the drying device, an elastic floating roller-type squeezing mechanism provided on the side of the drying device close to the collection trough, and a dual-domain linkage control mechanism provided on the side of the elastic floating roller-type squeezing mechanism away from the collection trough; The elastic floating roller extrusion mechanism is used to adapt to the adjustment of the extrusion diameter of the sponge material of office chairs with different thicknesses; The dual-domain linkage control mechanism is used to adapt to sponges of different thicknesses to adjust the heat guidance of the drying equipment and work in conjunction with the beating amplitude.

[0010] Preferably, the elastic floating roller extrusion mechanism includes an extrusion chamber, which is opened on one side of the drying equipment close to the collecting tank, and positioning bodies are rotatably connected to the inner walls of the drying equipment on both sides of the extrusion chamber, and the positioning bodies are connected to an external driving device. Guide grooves are opened on the symmetrical surfaces of the two positioning bodies, and a bidirectional drive screw is rotatably connected to the middle of one side of the positioning body close to the guide groove.

[0011] Preferably, the elastic floating roller extrusion mechanism also includes an adjusting shaft, which is threadedly connected to the bidirectional drive screw. The adjusting shaft consists of three discs of different diameters and a fixed rod that fixes the discs together. There are two groups of adjusting shafts, which are respectively located on both sides of the reverse threads of the bidirectional drive screw. The diameters of the three discs of different diameters gradually decrease from the middle of the bidirectional drive screw toward the positioning body. An extrusion arc is slidably connected in the guide groove. The bidirectional drive screw consists of a quarter arc surface and an oblique body symmetrically arranged on the inner surface.

[0012] Preferably, the dual-domain linkage control mechanism includes a drying chamber, a hot air outlet is installed in the drying chamber, the drying chamber is opened on the side of the drying equipment away from the extrusion chamber, and two positioning rods are symmetrically fixedly connected to the inner walls of the drying equipment on both sides of the drying chamber, one end of the positioning rod away from the inner wall of the drying equipment is fixedly connected to an arc-shaped groove body, and a side of the arc-shaped groove body close to the positioning rod is fixedly connected to a support rod, and the outer ring of the end of the positioning rod close to the arc-shaped groove body is slidably connected to a sliding column, and the outer wall of the end of the sliding column close to the arc-shaped groove body is fixedly connected to the support rod, and a stud is fixedly connected to the sliding column, and both sides of the stud The two ends of the L-shaped frame are connected with the L-shaped frame, and the two ends of the L-shaped frame are connected with the L-shaped frame.

[0013] Preferably, the dual-domain linkage control mechanism also includes an electrically-controlled telescopic rod, which is fixedly connected to the inner wall of the drying equipment, and the electrically-controlled telescopic rod is provided with four electrically-controlled telescopic rods respectively located on both sides of the inner wall of the drying equipment, and the end of the electrically-controlled telescopic rod away from the drying equipment is fixedly connected to a connector, one end of the connector is fixedly connected to the sliding column, and the end of the connector away from the sliding column is fixedly connected to a rack, and a positioning plate is fixedly connected to the inner wall of the drying equipment, and the connector is slidably sleeved on the positioning plate, and a fan gear set is meshed and connected above the rack, and the middle part of the fan gear set is rotatably connected to the positioning plate, and an eccentric disk is rotatably connected to the positioning plate, and the end of the fan gear set away from the rack is fixedly connected to a guide plate.

[0014] Preferably, four guide grooves are provided around the center of the positioning body as the axis, a driving device is built into the bidirectional drive screw, and the two ends of the bidirectional drive screw have threads in opposite directions.

[0015] Preferably, there are two largest discs in the adjusting shaft body, four extrusion arc bodies are equidistantly arranged around the center of the positioning body, and the oblique bodies inside the extrusion arc bodies interfere with the surface of the adjusting shaft body.

[0016] Preferably, the stud on the follower block is slidably connected in another groove of the L-shaped groove body, the follower block is composed of a slide plate and a column rod, the deflection column is composed of a fixed bracket and a rotating rod rotatably connected to the bracket, the racket rod is a flexible rod with an internal air bag, and the racket rod is parallel to the conveyor belt.

[0017] Preferably, the positioning plate is composed of two fixed plates, the fan gear group is composed of a fan gear and a vertical slide body, the eccentric column is fixedly connected to the eccentric part of the eccentric disk, the vertical slide body in the fan gear group is slidably sleeved on the eccentric column in the eccentric disk, and the guide plate is tilted toward the conveyor belt direction.

[0018] Compared with the prior art, the present invention provides an office chair sponge drying device, which has the following beneficial effects: 1. By setting up the extrusion arc, the sponge material transported on the conveyor belt is subjected to a preliminary moisture extrusion operation, which can effectively discharge the free water and part of the capillary water inside the sponge, reduce the moisture content, and significantly reduce the heat required for the subsequent drying process. This improves the equipment's production capacity per unit time and reduces energy consumption in the drying stage. The extrusion operation can eliminate the density difference and uneven distribution of voids inside the sponge caused by the molding process, making the material structure denser and more uniform. It also helps the drying medium in the drying equipment to penetrate more evenly into the sponge, avoiding the phenomenon of dry outside and wet inside caused by uneven moisture distribution, ensuring drying uniformity, ensuring the consistency of the sponge's physical properties, and avoiding defects such as bulging, deformation, and cracking caused by rapid vaporization of moisture during the drying process.

[0019] 2. Through the setting of the elastic floating roller extrusion mechanism, under the cooperation of the adjusting shaft and the oblique block on the inner wall of the extrusion arc, the diameter of the extrusion arc is adjusted according to the thickness of the sponge material, avoiding the fixed extrusion diameter, which leads to insufficient extrusion of thick sponges, residual large amounts of water, and increased burden of subsequent drying. Thin sponges may be damaged due to excessive extrusion. Under the setting of the adjusting shaft, appropriate extrusion pressure is applied to sponges of different thicknesses to control the moisture content after extrusion and prevent structural damage caused by improper extrusion force. Reasonable extrusion force is applied to make the thick sponge fully dehydrated while maintaining the internal pore structure intact, and the surface of the thin sponge is flat and undamaged, which helps the subsequent drying medium to penetrate and act on the sponge more evenly, thereby improving the sponge drying effect and product qualification rate.

[0020] 3. Through the setting of the dual-domain linkage control mechanism, the angle of the guide plate is dynamically adjusted according to the difference in sponge thickness to adjust the direction of hot air flow. For thick sponges, the inclination angle of the guide plate is increased to allow the hot air to vertically penetrate the interior of the sponge, accelerate the vaporization of internal moisture, and avoid the problem of overheating of the surface and insufficient internal drying. For thin sponges, the angle of the guide plate is reduced to disperse the hot air so that the hot air is spread horizontally to cover the surface, quickly evaporate the surface moisture, and prevent carbonization or embrittlement caused by vertical heat concentration. The dynamic adjustment of the guide plate can coordinate the contact area and angle of the hot air and the sponge, shortening the average drying time of sponges of different thicknesses and avoiding ineffective heat loss and excessive concentration.

[0021] 4. Through the setting of the racket, when adjusting the deflection angle of the guide plate to adjust the direction of hot air flow, the racket amplitude is adjusted synchronously according to the deflection of the guide plate. The adjustable beating amplitude can adjust the force intensity according to the thickness of the sponge. For thick sponges, high-frequency and small-amplitude beating is adopted to avoid compaction of the internal structure due to strong beating, and at the same time continuously loosen the fibers to increase the penetration depth of hot air and restore the fluffiness; for thin sponges, low-frequency and large-amplitude beating is adopted to prevent high-frequency vibration from causing fiber breakage and improve the air permeability of the internal pores of the sponge. The dynamic adjustment of the racket amplitude can effectively correct the local accumulation or depression of the sponge due to uneven thickness, and cooperate with the material structure of the racket. The air pressure buffer mechanism of the internal air bag is further used to avoid damage such as root tearing to the sponge. Flexible contact force replaces the rigid impact when beating thick sponges, and elastic buffering is used to disperse the force of beating thin sponges, effectively restoring the internal pore structure of the sponge and improving drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cutaway internal structural diagram of the drying equipment of the present invention; Figure 3 For the present invention Figure 2 A in the middle shows the enlarged structure diagram; Figure 4 This is a disassembled structural diagram of the elastic floating roller extrusion mechanism of the present invention; Figure 5 This is a partial structural diagram of the elastic floating roller extrusion mechanism of the present invention; Figure 6 This is a structural diagram of the dual-domain linkage control mechanism of the present invention; Figure 7 This is a top view of the dual-domain linkage control mechanism of the present invention; Figure 8 This is a partial structural diagram of the dual-domain linkage control mechanism of the present invention; Figure 9 This is a disassembled structural diagram of the dual-domain linkage control mechanism of the present invention; Figure 10 For the present invention Figure 8 Enlarged structural diagram at point B in the middle.

[0023] In the picture: 11. Drying equipment; 12. Conveyor belt; 13. Collection tank; 2. Elastic floating roller extrusion mechanism; 21. Extrusion chamber; 22. Positioning body; 23. Guide groove; 24. Bidirectional drive screw; 25. Adjustment shaft; 26. Extrusion arc; 3. Dual-domain linkage control mechanism; 31. Drying chamber; 32. Positioning rod; 33. Arc-shaped trough; 34. Sliding column; 35. Stud; 36. L-shaped trough; 37. Follower block; 38. U-shaped body; 39. Deflection column; 310. Rack; 311. Electric telescopic rod; 312. Connecting body; 313. Positioning plate; 314. Rack; 315. Sector gear set; 316. Eccentric disk; 317. Guide plate. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] The present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0026] Example: Please refer to Figures 1 to 5 As shown: In order to solve the problems mentioned in the technical solution, an embodiment of the present application provides an office chair sponge drying device, including: a drying device 11, a conveyor belt 12 is arranged in the drying device 11, and a collection tank 13 is arranged at the bottom of the drying device 11, and the collection tank 13 is used to collect the sponge moisture squeezed by the elastic floating roller squeezing mechanism 2. It is characterized in that the elastic floating roller squeezing mechanism 2 is arranged on the side of the drying device 11 close to the collection tank 13, and the dual-domain linkage control mechanism 3 is arranged on the side of the elastic floating roller squeezing mechanism 2 away from the collection tank 13.

[0027] The elastic floating roller extrusion mechanism 2 is used to adapt to the adjustment of the extrusion diameter of office chair sponge materials of different thicknesses. The elastic floating roller extrusion mechanism 2 includes an extrusion chamber 21. The extrusion chamber 21 is opened on one side of the drying equipment 11 close to the collecting tank 13. The inner walls of the drying equipment 11 on both sides of the extrusion chamber 21 are rotatably connected with positioning bodies 22. The positioning bodies 22 are connected to an external driving device. Guide grooves 23 are opened on the symmetrical surfaces of the two positioning bodies 22. The guide grooves 23 are mainly used to provide guidance for the movement of the extrusion arc 26. Four guide grooves 23 are opened around the center of the positioning body 22 as the axis. A bidirectional drive screw 24 is rotatably connected to the middle of one side of the positioning body 22 close to the guide groove 23. The bidirectional drive screw 24 is electrically connected to an external controller. The bidirectional drive screw 24 is mainly used to rotate and drive the adjusting shafts 25 on both sides to move synchronously. The bidirectional drive screw 24 has a built-in driving device, and the two ends of the bidirectional drive screw 24 have opposite threads.

[0028] The elastic floating roller extrusion mechanism 2 also includes an adjusting shaft 25, which is threadedly connected to the bidirectional drive screw 24. The adjusting shaft 25 is mainly used to move in the direction of the positioning bodies 22 on both sides to push the extrusion arc 26 to expand outward for adjustment. The adjusting shaft 25 is composed of three discs of different diameters and a fixed rod fixedly connected between each disc. There are two largest discs in the adjusting shaft 25, and the adjusting shaft 25 is provided with two groups. They are respectively located on both sides of the reverse thread of the bidirectional drive screw 24. The three discs of different diameters gradually decrease in diameter from the middle of the bidirectional drive screw 24 toward the positioning body 22. An extrusion arc 26 is slidably connected in the guide groove 23. The extrusion arc 26 is mainly used to extrude the sponge material conveyed on the conveyor belt 12. Four extrusion arcs 26 are equidistantly arranged around the center of the positioning body 22. The bidirectional drive screw 24 is composed of a quarter-circular arc surface and an oblique body symmetrically arranged on the inner surface. The oblique body inside the extrusion arc 26 conflicts with the surface of the adjusting shaft 25.

[0029] Further examples: Please refer to Figures 6 to 10 As shown: The dual-domain linkage control mechanism 3 is used to adapt to sponges of different thicknesses to adjust the heat direction of the drying device 11 and work in conjunction with the patting amplitude. The dual-domain linkage control mechanism 3 includes a drying chamber 31, a hot air outlet is installed in the drying chamber 31, and the drying chamber 31 is opened on the side of the drying device 11 away from the extrusion chamber 21. Two positioning rods 32 are symmetrically fixedly connected to the inner wall of the drying device 11 on both sides of the drying chamber 31. The end of the positioning rod 32 away from the inner wall of the drying device 11 is fixedly connected to an arc-shaped groove body 33 The arc-shaped groove body 33 is fixedly connected to a support rod on one side close to the positioning rod 32. The outer ring of the positioning rod 32 close to the arc-shaped groove body 33 is slidably connected to a sliding column 34. The outer wall of the sliding column 34 close to the arc-shaped groove body 33 is fixedly connected to the support rod. A stud 35 is fixedly connected to the sliding column 34. Both sides of the stud 35 are slidably sleeved with an L-shaped groove body 36. There are two L-shaped groove bodies 36. Both vertical surfaces of the L-shaped groove body 36 are provided with grooves. The stud 35 is synchronously arranged in the middle of the L-shaped groove body 36. The stud 35 connects the two L-shaped The trough body 36, the support rod on the arc trough body 33 is rotatably connected to the stud 35 in the middle of the L-shaped trough body 36, and the arc trough body 33 is slidably connected with a driven block 37. The driven block 37 is mainly used to slide on the arc trough body 33 to adjust the amplitude of the racket rod 310. One of the studs 35 is set inside the driven block 37. The stud 35 on the driven block 37 is slidably connected to the other groove of the L-shaped trough body 36. The stud 35 is slidably connected to the arc groove of the arc trough body 33. The driven block 37 consists of a slide and a column. The end away from the arcuate trough 33 is rotatably connected to a U-shaped body 38, and the end away from the driven block 37 is rotatably connected to a deflection column 39. The deflection column 39 is composed of a fixed bracket and a rotating rod rotatably connected to the bracket. The middle part of the deflection column 39 is fixedly connected to a slap rod 310. The slap rod 310 is a flexible rod of the internal air bag. The slap rod 310 is mainly used to dynamically fluff the sponge fibers, break the internal airflow dead zone, and allow the heat to penetrate into all layers of the sponge more evenly. The slap rod 310 is parallel to the conveyor belt 12.

[0030] The dual-domain linkage control mechanism 3 also includes an electrically controlled telescopic rod 311, which is electrically connected to the same external controller as the bidirectional drive screw 24. The electrically controlled telescopic rod 311 is fixedly connected to the inner wall of the drying device 11. The electrically controlled telescopic rod 311 is mainly used to synchronously drive the adjustment of the amplitude of the racket rod 310 and the inclination angle of the guide plate 317. The electrically controlled telescopic rod 311 is provided with four electrically controlled telescopic rods 311, which are respectively located on both sides of the inner wall of the drying device 11. The end of the electrically controlled telescopic rod 311 away from the drying device 11 is fixedly connected to a connector 312, one end of the connector 312 is fixedly connected to the sliding column 34, and the end of the connector 312 away from the sliding column 34 is fixedly connected to a rack 314, which is mainly used for reciprocating movement and meshing with the fan gear set 315 to adjust the guide plate 31 The inclination angle of 7 is that a positioning plate 313 is fixedly connected to the inner wall of the drying equipment 11, and the connecting body 312 is slidably sleeved on the positioning plate 313. The positioning plate 313 is composed of two fixed plates, and a fan-shaped gear set 315 is meshed and connected above the rack 314. The fan-shaped gear set 315 is composed of a fan gear and a vertical slide body. The middle part of the fan-shaped gear set 315 is rotatably connected to the positioning plate 313, and an eccentric disk 316 is rotatably connected to the positioning plate 313. The eccentric part of the eccentric disk 316 is fixedly connected to the eccentric column. The vertical slide body in the fan-shaped gear set 315 is slidably sleeved on the eccentric column in the eccentric disk 316. The end of the fan-shaped gear set 315 away from the rack 314 is fixedly connected to a guide plate 317, and the guide plate 317 is tilted toward the direction of the conveyor belt 12.

[0031] Everything in the above example works as follows: The following is the working process of the elastic floating roller extrusion mechanism 2 for adjusting the extrusion diameter according to the production of office chair sponge materials of different thicknesses: During use, the operator places the cleaned sponge material on the conveyor belt 12. During the process of the conveyor belt 12 conveying the sponge, the sponge gradually approaches the elastic floating roller squeezing mechanism 2 until it conflicts with the elastic floating roller squeezing mechanism 2. The guide groove 23 is driven to rotate by an external drive device. During the rotation of the guide groove 23, the squeezing arc 26 is driven to rotate synchronously. Then, under the cooperation of the conveyor belt 12 conveying the sponge and the rotation of the squeezing arc 26, the sponge in transit is gradually squeezed, and the moisture therein is preliminarily pre-treated and discharged.

[0032] Furthermore, according to the different thicknesses of sponges, if the sponge is thin, the built-in driving device of the bidirectional driving screw 24 is started, so that the bidirectional driving screw 24 rotates forward. When the bidirectional driving screw 24 rotates, due to the mutually opposite thread settings at both ends, the adjusting shaft bodies 25 connected with the opposite threads on both sides thereof are driven to move toward the positioning bodies 22 on both sides respectively. In the process of the movement of the adjusting shaft bodies 25, since the adjusting shaft bodies 25 are composed of a disc with a diameter gradually decreasing in the middle toward the positioning body 22, when the two groups of adjusting shaft bodies 25 move to both sides, the disc with the largest diameter gradually aligns with the extrusion arc body 26. The internal oblique blocks fit together, and in the process of continuous movement, the extrusion arc 26 moves in the guide groove 23 and expands toward the outer circle of the guide groove 23, thereby increasing the diameter of the extrusion arc 26 and increasing its contact surface with the thin sponge, thereby better performing the pre-treatment extrusion work; on the contrary, if the thickness of the sponge increases, the bidirectional drive screw 24 is driven in the reverse direction to rotate, prompting the adjustment shaft 25 to move in the center, and the disc with the largest contact diameter collides with the extrusion arc 26, and is then replaced by another disc with a smaller diameter. In this way, the diameter of the extrusion arc 26 is changed to adjust the extrusion force to adapt to sponges of different thicknesses.

[0033] By setting the extrusion arc 26, the sponge material transported on the conveyor belt 12 is subjected to a preliminary moisture extrusion operation, which can effectively discharge the free water and part of the capillary water inside the sponge, reduce the moisture content, and the reduced moisture content greatly reduces the heat required for the subsequent drying process, thereby improving the equipment's unit time production capacity and reducing energy consumption in the drying stage. The extrusion operation can eliminate the density difference and uneven distribution of voids inside the sponge caused by the molding process, making the material structure denser and more uniform; it is more conducive to the drying medium in the drying equipment 11 to penetrate more evenly into the sponge, avoiding the phenomenon of dry outside and wet inside due to uneven moisture distribution, improving drying uniformity, ensuring the consistency of the sponge's physical properties, and avoiding defects such as bulging, deformation, and cracking caused by rapid vaporization of moisture during the drying process.

[0034] Through the setting of the elastic floating roller extrusion mechanism 2, under the cooperation of the adjusting shaft 25 and the oblique block on the inner wall of the extrusion arc 26, the diameter of the extrusion arc 26 is adjusted according to the thickness of the sponge material, avoiding a fixed extrusion diameter, which leads to insufficient extrusion of thick sponges, residual large amounts of water, and increased burden of subsequent drying. Thin sponges may be structurally damaged due to excessive extrusion. Under the setting of the adjusting shaft 25, an appropriate extrusion force is applied to sponges of different thicknesses to control the moisture content after extrusion and prevent structural damage caused by improper extrusion force. A reasonable extrusion force is applied to ensure that the thick sponge maintains its internal pore structure intact while being fully dehydrated, and the surface of the thin sponge is flat and undamaged, which helps the subsequent drying medium to penetrate and act on the sponge more evenly, thereby improving the sponge drying effect and product qualification rate.

[0035] Please refer to the above working process Figures 1 to 5 .

[0036] The following is the working process of the dual-domain linkage control mechanism 3 for adjusting the heat direction of the drying device 11 and working in conjunction with the beating amplitude to adapt to sponges of different thicknesses: During use, after the sponge is subjected to preliminary pretreatment and internal moisture squeezing operation, the sponge is transported from the extrusion chamber 21 to the drying chamber 31 under the continuous transportation of the conveyor belt 12. The expansion and contraction of the extrusion arc 26 are adjusted according to the number of rotations of the bidirectional drive screw 24 to adapt to sponge materials of different thicknesses. Under the feedback of the same external controller to which the bidirectional drive screw 24 and the electric telescopic rod 311 are connected, the adjustment data of the bidirectional drive screw 24 is transmitted to the external controller, and then the controller simultaneously controls the electric telescopic rod 311 to extend, adjusts the distance of the slide column 34 to control the swing amplitude of the swing rod 310, and the inclination angle of the guide plate 317.

[0037] The specific adjustment process of the racket amplitude of the racket rod 310 is as follows: it is started to extend by an external controller, and under the extension of the electric telescopic rod 311, the slide column 34 is pushed to move on the positioning rod 32 toward the end away from the positioning rod 32, and then the support rod provided on the slide column 34 is displaced synchronously with the movement of the slide column 34. Since a stud 35 is provided on the support rod of the slide column 34, and this stud 35 is slidably connected to the slide groove in the L-shaped groove body 36, when the slide column 34 moves toward the L-shaped groove body 36, the stud 35 on the slide column 34 moves in the L-shaped groove body 36, so that under the resistance force of the stud 35 on the L-shaped groove body 36, the end of the L-shaped groove body 36 close to the slide column 34 is pushed to move forward synchronously. When one end of the L-shaped groove body 36 moves forward, since the stud 35 is provided in the middle of the L-shaped groove body 36 and is rotatably connected to the arc groove body 33, and the arc groove body 33 is fixedly connected to the positioning rod 32, the stud 35 in the middle of the L-shaped groove body 36 is used as a fulcrum, and the end of the L-shaped groove body 36 away from the sliding post 34 is tilted upward. Since the stud 35 provided on the driven block 37 is slidably connected in the groove of the end of the L-shaped groove body 36 away from the sliding post 34, when the L-shaped groove body 36 approaches the driven block 37 and tilts upward, the stud 35 is synchronously pulled to control the driven block 37 to slide upward in the arc groove of the arc groove body 33. At this time, the deflection angle of the driven block 37 increases, and the U-shaped groove body 36 connected to the driven block 37 The body 38 is synchronized with the angle change of the driven block 37, with the connection between the U-shaped body 38 and the deflection column 39 as the fulcrum. As the driven block 37 deflects upward, the driven block 37 slides and is connected to the position in the arc groove 33, and the eccentric angle with the center point of the positioning rod 32 increases. Then, when the built-in power supply of the positioning rod 32 is started to rotate forward, the positioning rod 32 rotates and drives the arc groove 33 to rotate forward. The deflection of the arc groove 33 prompts the driven block 37 connected thereto by the stud 35 to rotate forward synchronously. At this time, when the rotation range of the driven block 37 increases, the driven block 37 cooperates with the U-shaped body 38 to increase the deflection angle of the U-shaped body 38. When the swing rod 32 rotates downward, the rotation angle of the deflection column 39 fixedly connected to the U-shaped body 38 increases, thereby controlling the deflection angle of the racket rod 310 fixed thereon in the vertical direction to increase, thereby expanding the swing range of the racket rod 310. When the rotation speed of the positioning rod 32 is fixed, the larger the eccentric angle between the driven block 37 and the positioning rod 32, the larger the swing amplitude of the racket rod 310, and its frequency will also decrease accordingly, instantly raising the local height of the sponge, forming a short gap, promoting the circulation of the upper and lower layers of air flow, avoiding excessive disturbance of the thin sponge by high-frequency action, preventing material tearing, and using the elastic deformation of the sponge itself to achieve stretching under the single soft impact of the inflatable bag of the racket rod 310, avoiding material damage caused by high-frequency stress accumulation;Conversely, the positioning rod 32 contracts, driving the slide post 34 away from the arcuate groove 33. In conjunction with the L-shaped groove 36, the position of the follower block 37 sliding on the arcuate groove 33 is adjusted, bringing the follower block 37 closer to the positioning rod 32, reducing the eccentric angle and simultaneously increasing the amplitude and frequency of the racket bar 310, working in conjunction with the thick sponge.

[0038] Furthermore, the angle deflection working process of the guide plate 317 is as follows: during the extension of the electric telescopic rod 311, the guide plate 317 is fixedly connected to the electric telescopic rod 311 and the sliding column 34 through the connecting body 312. When the sliding column 34 moves away from the end of the positioning rod 32, the connecting body 312 moves synchronously in the positioning plate 313 toward the end away from the electric telescopic rod 311. Under the drive of the connecting body 312, the rack 314 moves, thereby driving the meshing sector gear set 315 to move at the connection point of the positioning plate 313. The fulcrum causes the sector gear set 315 to deflect toward the inner wall of the drying device 11, and under the restriction of the sector gear set 315 by the eccentric column on the eccentric disk 316, the guide plate 317 connected to the auxiliary sector gear set 315 deflects upward with the sector gear set 315 as the fulcrum, thereby guiding and adjusting the heat flow at the air outlet above the guide plate 317, so that the airflow is in a horizontal diffusion state, thereby more evenly covering the entire surface of the thin sponge, and avoiding local overheating caused by concentrated impact of vertical airflow.

[0039] Through the setting of the dual-domain linkage control mechanism 3, the angle of the guide plate 317 is dynamically adjusted according to the difference in sponge thickness to adjust the flow direction of the hot air. For thick sponges, the inclination angle of the guide plate is increased to allow the hot air to vertically penetrate the interior of the sponge, accelerate the vaporization of internal moisture, and avoid the problem of overheating of the surface and insufficient internal drying. For thin sponges, the angle of the guide plate is reduced to disperse the hot air so that the hot air is spread horizontally to cover the surface, quickly evaporate the surface moisture, and prevent carbonization or embrittlement caused by vertical heat concentration. The dynamic adjustment of the guide plate 317 can coordinate the contact area and angle of the hot air and the sponge, thereby shortening the average drying time of sponges of different thicknesses and avoiding ineffective heat loss and excessive concentration.

[0040] Through the setting of the slap rod 310, when the deflection angle of the guide plate 317 is adjusted to adjust the direction of the hot air flow, the slapping amplitude of the slap rod 310 is adjusted synchronously according to the deflection of the guide plate 317. The adjustable slapping amplitude can adjust the force intensity according to the thickness of the sponge. For thick sponges, high-frequency and small-amplitude slapping is adopted to avoid compaction of the internal structure due to strong slapping, while continuously loosening the fibers, increasing the penetration depth of hot air, and restoring the fluffiness; for thin sponges, low-frequency and large-amplitude slapping is adopted to prevent high-frequency vibration from causing fiber breakage and improve the air permeability of the pores inside the sponge. The dynamic adjustment of the slapping amplitude of the slap rod 310 can effectively correct local accumulation or depression of the sponge due to uneven thickness. In conjunction with the material structure of the slap rod 310, the air pressure buffer mechanism of the internal air bag is further used to avoid damage such as tearing of the sponge. Flexible contact force replaces the rigid impact when slapping thick sponges, and elastic buffering is used to disperse the force of slapping thin sponges, effectively restoring the internal pore structure of the sponge and improving drying efficiency.

[0041] Please refer to the above working process Figures 6 to 10 .

[0042] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0043] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An office chair sponge drying device, comprising: A drying device (11), wherein a conveyor belt (12) is provided in the drying device (11), and a collecting tank (13) is provided at the bottom of the drying device (11), characterized in that an elastic floating roller type squeezing mechanism (2) is provided on a side of the drying device (11) close to the collecting tank (13), and a dual-domain linkage control mechanism (3) is provided on a side of the elastic floating roller type squeezing mechanism (2) away from the collecting tank (13); The elastic floating roller extrusion mechanism (2) is used to adjust the extrusion diameter of office chair sponge materials of different thicknesses; The dual-domain linkage control mechanism (3) is used to adapt to sponges of different thicknesses to adjust the heat conduction of the drying device (11) and to work in conjunction with the beating amplitude.

2. The office chair sponge drying device according to claim 1, characterized in that: The elastic floating roller extrusion mechanism (2) includes an extrusion chamber (21), the extrusion chamber (21) is opened on one side of the drying device (11) close to the collecting tank (13), and positioning bodies (22) are rotatably connected to the inner walls of the drying device (11) on both sides of the extrusion chamber (21), and the positioning bodies (22) are connected to an external driving device. Guide grooves (23) are opened on the symmetrical surfaces of the two positioning bodies (22), and a bidirectional driving screw (24) is rotatably connected to the middle of one side of the positioning body (22) close to the guide groove (23).

3. The office chair sponge drying device according to claim 2, characterized in that: The elastic floating roller extrusion mechanism (2) also includes an adjusting shaft (25), the adjusting shaft (25) is threadedly connected to the bidirectional drive screw (24), the adjusting shaft (25) is composed of three discs of different diameters and a fixed rod for fixing the discs to each other, the adjusting shaft (25) is provided with two groups, and is respectively located on both sides of the reverse thread of the bidirectional drive screw (24), the three discs of different diameters gradually decrease in diameter from the middle of the bidirectional drive screw (24) toward the positioning body (22), an extrusion arc (26) is slidably connected in the guide groove (23), and the bidirectional drive screw (24) is composed of a quarter arc surface and an oblique body symmetrically arranged on the inner surface.

4. The office chair sponge drying device according to claim 1, characterized in that: The dual-domain linkage control mechanism (3) includes a drying chamber (31), wherein a hot air outlet is provided in the drying chamber (31), and the drying chamber (31) is opened on a side of the drying device (11) away from the extrusion chamber (21). Two positioning rods (32) are symmetrically fixedly connected to the inner wall of the drying device (11) on both sides of the drying chamber (31), and one end of the positioning rod (32) away from the inner wall of the drying device (11) is fixedly connected to an arc-shaped groove body (33), and a side of the arc-shaped groove body (33) close to the positioning rod (32) is fixedly connected to a support rod, and the outer ring of the end of the positioning rod (32) close to the arc-shaped groove body (33) is slidably connected to a sliding column (34), and the outer wall of the end of the sliding column (34) close to the arc-shaped groove body (33) is fixedly connected to the support rod, and a stud (35) is fixedly connected to the sliding column (34), and both sides of the stud (35) are slidably sleeved with L-shaped The trough body (36) is provided with two L-shaped trough bodies (36), and the vertical sides of the L-shaped trough body (36) are both provided with grooves. The stud (35) is synchronously provided in the middle of the L-shaped trough body (36), and the stud (35) connects the two L-shaped trough bodies (36). The support rod on the arc trough body (33) is rotatably connected to the stud (35) in the middle of the L-shaped trough body (36). The arc trough body (33) is slidably connected to the driven block (3 7), one of the studs (35) is arranged inside the driven block (37), the stud (35) is slidably connected in the arc groove of the arc groove body (33), the end of the driven block (37) away from the arc groove body (33) is rotatably connected to the U-shaped body (38), the end of the U-shaped body (38) away from the driven block (37) is rotatably connected to the deflection column (39), and the middle part of the deflection column (39) is fixedly connected to the racket rod (310).

5. The office chair sponge drying device according to claim 4, characterized in that: The dual-domain linkage control mechanism (3) further comprises an electric telescopic rod (311), the electric telescopic rod (311) being fixedly connected to the inner wall of the drying device (11), the electric telescopic rod (311) being provided with four rods located on both sides of the inner wall of the drying device (11), the end of the electric telescopic rod (311) away from the drying device (11) being fixedly connected to a connector (312), one end of the connector (312) being fixedly connected to a sliding column (34), and the end of the connector (312) being away from the sliding column (34) being fixedly connected to the sliding column (34). A rack (314) is provided, a positioning plate (313) is fixedly connected to the inner wall of the drying device (11), the connecting body (312) is slidably sleeved on the positioning plate (313), a fan-shaped gear set (315) is meshed and connected above the rack (314), the middle part of the fan-shaped gear set (315) is rotatably connected to the positioning plate (313), an eccentric disk (316) is rotatably connected to the positioning plate (313), and a guide plate (317) is fixedly connected to one end of the fan-shaped gear set (315) away from the rack (314).

6. The office chair sponge drying device according to claim 2, characterized in that: Four guide grooves (23) are formed around the center of the positioning body (22) as the axis. A driving device is built into the bidirectional driving screw (24). Both ends of the bidirectional driving screw (24) have threads in opposite directions.

7. The office chair sponge drying device according to claim 3, characterized in that: There are two largest discs in the adjusting shaft (25), and four extrusion arcs (26) are equidistantly arranged around the center of the positioning body (22). The internal oblique bodies of the extrusion arcs (26) are in conflict with the surface of the adjusting shaft (25).

8. The office chair sponge drying device according to claim 4, characterized in that: The stud (35) on the driven block (37) is slidably connected in another groove of the L-shaped groove body (36). The driven block (37) is composed of a slide plate and a column rod. The deflection column (39) is composed of a fixed bracket and a rotating rod rotatably connected to the bracket. The racket (310) is a flexible rod of an internal air bag. The racket (310) is in a parallel state with the conveyor belt (12).

9. The office chair sponge drying device according to claim 5, characterized in that: The positioning plate (313) is composed of two fixed plates, the fan gear set (315) is composed of a fan gear and a vertical slide trough body, the eccentric portion of the eccentric disc (316) is fixedly connected to an eccentric column, the vertical slide trough body in the fan gear set (315) is slidably sleeved on the eccentric column in the eccentric disc (316), and the guide plate (317) is in a state of being inclined toward the conveyor belt (12).

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