Multilayer composite cushioning decompression office chair production and assembly equipment and process

Abstract

The present application relates to the technical field of seat production and assembly, and particularly relates to a multi-layer composite cushioning and pressure-reducing office chair production and assembly device and process, which comprises a material conveying device, a material clamping device, further comprises a hole opening mechanism, the hole opening mechanism is arranged on the material conveying mechanism and is used for punching holes on the sponge, and comprises a sliding table, a movable assembly arranged on the sliding table and used for aligning the sponge and the chair back, and a punching assembly arranged on the movable assembly and used for punching holes on the sponge; further comprises a sealing mechanism arranged in front of the hole opening mechanism and used for sealing the sponge around the turbine fan, a composite mechanism arranged behind the hole opening mechanism for combining the sponge and the chair back; the technical problem of uneven heat dissipation of the ventilation function when riding is solved by reducing the extrusion deformation, the gas hole blockage and the gas not flowing.

Description

Technical Field

[0001] This invention relates to the field of chair production and assembly technology, and in particular to a multi-layer composite cushioning and pressure-reducing office chair production and assembly equipment and process. Background Technology

[0002] Modern office chairs are no longer just simple "seats." Their core features lie in highly customized ergonomic support and a wealth of intelligent functions: they can be precisely adapted to different body types through multi-dimensional adjustments, and some even integrate health monitoring, AI voice interaction, and bone conduction speakers; in particular, the highly favored seat ventilation function usually uses an embedded high-speed centrifugal fan, combined with breathable mesh fabric to form airflow circulation. Not only can you choose between cold and warm air, but it also supports intelligent gravity sensing and long-lasting wireless power supply, fundamentally solving the pain point of "sweating and stickiness" from sitting for long periods of time in summer.

[0003] Production begins with the precision machining of steel and sponge. After the frame is riveted, the fabric is covered (upholstered), and the functional chassis is assembled, each chair must undergo a load-bearing durability test simulating long-term use and a safety burst test before it can leave the factory.

[0004] Patent document CN202421447347.6 discloses an office chair assembly device, including an upper support leg, a clamping mechanism, a console, and a base. The console is slidably connected to the upper support leg and is located on the inner wall of the upper support leg. The clamping mechanism is located on the inner wall of the console and includes a clamping claw, an adjusting frame, an adjusting rod, a U-shaped frame, and a telescopic assembly. Activating the telescopic assembly moves the U-shaped frame towards the telescopic assembly, and the U-shaped frame is then fixedly connected to the adjusting rod, thereby driving the adjusting rod to move. Simultaneously, the adjusting rod is slidably connected to the adjusting frame and is located in the adjusting hole of the adjusting frame. The clamping claw is fixedly connected to the adjusting frame, and the adjusting frame drives the clamping claw to clamp and fix the rotating shaft, thereby achieving rapid fixation of the rotating shaft.

[0005] However, in actual use, the seat ventilation function is affected by the deformation of the foam during sitting, which obstructs the ventilation holes and affects the heat dissipation effect of the ventilation function. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by setting up an opening mechanism, creating cavities and fine and coarse pores in different areas within the seat foam, establishing a gradient airflow path, and enabling airflow to cover the entire negative pressure area through the cavity. This reduces compression deformation and gas blockage caused by pore blockage, thereby solving the technical problem of uneven heat dissipation in the seating ventilation function.

[0007] To address the above technical issues, the following technical solution is adopted: A multi-layer composite cushioning and pressure-reducing office chair production and assembly equipment includes a material conveying device, a material clamping device, and further includes: A perforation mechanism, which is disposed on a material conveying mechanism and used for perforating a sponge, includes a slide table, a movable component disposed on the slide table for aligning the sponge with the chair back, and a perforation component disposed on the movable component for perforating the sponge. Place the sponge onto the movable component, align the movable component with the turbine fan on the chair back, fix the position of the sponge and determine the perforation area on the sponge, and the perforation component cuts and perforates the inside of the sponge in layers.

[0008] Preferably, the movable component includes a slide rod fixed to the slide table, a positioning platform slidably connected to the slide rod, a positioning disk vertically slidably connected to the positioning platform, and multiple sets of positioning rods connected to the positioning disk; The positioning platform is moved down to the middle of the chair back, and the positioning rod contacts the surrounding foam. The position of the turbine fan installed on the backrest is determined by rotating the angle, and the positioning platform is adjusted to align with the turbine fan.

[0009] Preferably, the punching assembly includes a placement frame fixed on the positioning plate, clamps connected to both sides of the placement frame, two sets of blades slidably connected to the clamps, a cutting frame slidably connected vertically to the center of the placement frame, and a heating blade fixed to one side of the cutting frame.

[0010] Preferably, the punching assembly further includes a rising plate slidably connected to the placement frame, multiple sets of coarse-hole needles fixed on the rising plate, a lower pressure plate connected to the side of the placement frame, a needle plate slidably connected to the lower pressure plate, and multiple sets of fine-hole needles fixed on the needle plate. After the sponge is positioned, the cutting frame rises, the heating blade enters the sponge and rotates, cutting a cavity in the middle of the sponge and dividing the sponge into an upper and lower layer. Then, the punching component punches fine holes in the upper layer of the sponge and coarse holes in the lower layer of the sponge.

[0011] Preferably, the multi-layer composite cushioning and decompression office chair production and assembly equipment further includes a sealing mechanism located in front of the opening mechanism and used to seal the sponge around the turbine fan. The sealing mechanism includes an adhesive application component for applying adhesive to the back panel and a barrier component located behind the adhesive application component for surrounding the sponge with a layer of vertical sponge.

[0012] Preferably, the glue application assembly includes a glue application plate that is vertically slidably mounted on the conveying device, multiple glue outlets that are elastically connected to the glue application plate, a glue application brush located below the glue outlets, and a glue application roller located behind the enclosure assembly.

[0013] Preferably, the enclosure assembly includes a mounting frame disposed in front of the glue-applying roller, multiple sets of guide rollers disposed on one side of the mounting frame, a fixing ring vertically slidably connected to the mounting frame and rotatably connected to the mounting frame, and multiple sets of fittings on the fixing ring with a cutter slidably connected to the outside of the fixing ring.

[0014] Preferably, the fitting includes a rotating block rotatably connected to a fixed ring, a fixed pin disposed on the rotating block, a telescopic push rod disposed behind and below the fixed pin, and a slidable blade horizontally connected above the fixed pin. The gluing assembly applies glue to the chair back, and then the clamping device places the strip sponge around the turbine fan and glues it in place. The enclosure assembly surrounds the sponge sheet on the side walls of the strip sponge around the perimeter, and cuts the top and bottom sides of the sponge sheet and attaches it to the strip sponge to fill the gaps.

[0015] Preferably, the multi-layer composite buffer pressure relief office chair production and assembly equipment further includes a composite mechanism disposed behind the opening mechanism. The composite mechanism includes a baffle horizontally hinged behind the opening mechanism, a slide fixed in front of the baffle, negative pressure devices disposed on the upper and lower sides of the slide, and a push plate disposed in front of the slide. The push plate aligns the backrest foam with the lower chair back, and uses negative pressure to clean the foam surface and unclog the air holes on the foam during the movement.

[0016] As a further preferred embodiment, the multi-layer composite cushioning and pressure-reducing office chair production and assembly process, applied to the multi-layer composite cushioning and pressure-reducing office chair production and assembly equipment, includes the following steps: S1. Substrate positioning and attitude calibration: Fix the chair back frame with the pre-installed turbine fan on the conveying path, and at the same time carry the multi-layer composite sponge blank on the processing station; adjust the planar position and angle of the sponge blank so that its processing area is precisely aligned with the fan installation position on the chair back frame, and use circumferential multi-point contact feedback to lock the horizontal degree of freedom of the sponge and establish the reference coordinate system for the drilling operation. S2. Internal cavity construction and layered perforation: The sponge is subjected to internal thermal cutting to form a closed thin-walled cavity inside the sponge, separating the sponge into an independent surface breathable layer and a bottom air-conducting layer; then, the two layers are punctured differently to form several through-holes in the surface breathable layer and several through-holes in the bottom air-conducting layer, ensuring that all pores are connected to the central cavity and that the pore walls are heat-fused to form a smooth sealing edge. S3. Sealing treatment of the fan area: Apply adhesive to the outer periphery of the turbine fan of the chair back frame. The application process adapts to the curved surface of the chair back and leaves excess adhesive around the fan. Adhere strip sponge around the fan and apply pressure for initial curing. Then take sheet sponge and attach it around the side wall of the strip sponge. Cut grooves on the upper and lower edges of the sheet sponge and squeeze it into the gap between the strip sponge and the chair back frame. Use the elasticity of the sponge itself and the adhesive to fill the gap to build a closed sealing barrier. S4. Composite Assembly and Surface Finishing: Push the perforated sponge layer to the composite station, allowing it to pass over the negative pressure adsorption area during movement. Use airflow suction to remove floating dust and debris from the sponge surface and back-blown to clear the pores in each layer. When the sponge layer moves to the top of the chair back frame, calibrate its relative position to the sealing structure below and apply uniform pressure to ensure a tight bond between the two. After the adhesive has cured, check the pore patency and overall sealing performance to complete the assembly.

[0017] The beneficial effects of this invention are: (1) In this invention, a closed cavity is formed by thermal cutting inside the sponge, and the sponge is divided into a surface breathable layer and a bottom air-guiding layer. With the differentiated design of the surface micro-diameter air holes and the bottom large-diameter air holes, the airflow is managed and reorganized in layers. When the seat is under pressure, even if the surface micro-pores are blocked due to sponge compression, the bottom large-diameter air holes can still remain unobstructed. The airflow can enter the cavity through the edge area and be redistributed to maintain a continuous heat dissipation cycle. It takes into account both the delicate surface feel and the internal ventilation efficiency. A gradient ventilation channel is constructed inside the sponge, which effectively solves the problem of ventilation failure caused by sponge deformation under pressure. (2) In this invention, an adaptive curved surface floating adhesive application method is adopted, and excess adhesive is reserved around the fan; the sheet sponge material is wrapped around and pasted with the enclosure component, and its upper and lower edges are cut and squeezed into the gap between the strip sponge and the chair back frame. By utilizing the elasticity of the sponge itself and the filling effect of the excess adhesive, a closed sealed enclosure is constructed, blocking the unexpected air leakage path around the fan, forcing the airflow to mainly flow through the preset vents, avoiding energy loss, and performing multiple enclosures and embedded seals on the turbine fan area, which significantly improves the air tightness and negative pressure utilization rate of the system; (3) In this invention, by setting up a composite mechanism that combines negative pressure adsorption and precise positioning, the assembly accuracy and product cleanliness are greatly improved. After the drilling is completed, the sponge is pushed to the composite station by a pusher plate, so that it sweeps over the negative pressure adsorption area during the slide movement. The negative pressure airflow can not only effectively suck up and remove the hot melt debris on the surface of the sponge and in the cavity, but also back-blown and unblock the pores of each layer to prevent the pore walls from sticking together; at the same time, with the baffle limiting and uniform pressure, it ensures that the sponge layer and the sealing structure below are accurately aligned and firmly bonded, eliminating the deviation and impurity residue caused by manual assembly; (4) In this invention, the stability of the material's physical properties is ensured by controlling the thermal cutting and piercing processes. The sponge is cut and pierced using electric heating, causing the hole walls and cavity inner walls to melt instantly, forming a smooth, ceramicized edge seal. This process avoids the fiber pulling and debris residue caused by traditional mechanical cutting, not only improving the pore diameter accuracy but also enhancing the overall integrity of the sponge structure. It prevents stress concentration or localized collapse caused by rough cuts, ensuring consistent support stability and ventilation performance during long-term use of the seat.

[0018] In summary, this equipment has the advantages of simple structure, consistent quality, and high degree of automation, and is especially suitable for the field of seat production and assembly technology. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of a multi-layer composite cushioning and pressure-reducing office chair production and assembly equipment.

[0021] Figure 2 This is a partial structural diagram of a multi-layer composite cushioning and pressure-reducing office chair production and assembly equipment.

[0022] Figure 3 This is a schematic diagram of the overall structure of the hole-opening mechanism.

[0023] Figure 4 This is a schematic diagram of the relevant structure of the positioning stage.

[0024] Figure 5 This is a schematic diagram of the heating blade.

[0025] Figure 6 This is a cross-sectional schematic diagram of the hole-opening mechanism.

[0026] Figure 7 This is a partial structural diagram of the adhesive coating assembly.

[0027] Figure 8 This is a structural schematic diagram of the fencing component.

[0028] Figure 9 This is a schematic diagram of the fitting structure.

[0029] Figure 10 This is a schematic diagram of the composite mechanism.

[0030] Figure 11 This is a schematic diagram of the chair back structure.

[0031] Figure 12 This is a schematic diagram of the process flow for the production and assembly of a multi-layer composite cushioning and pressure-reducing office chair. Detailed Implementation

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0033] Example 1 like Figure 1 , Figure 2 , Figure 11 As shown, a multi-layer composite cushioning and pressure-reducing office chair production and assembly equipment includes a material conveying device 01, a material clamping device 02, and is characterized by further comprising: The perforation mechanism 1 is disposed on the material conveying mechanism and is used to perforate the sponge. It includes a slide table 11, a movable component 12 disposed on the slide table 11 and used to align the sponge with the chair back, and a perforation component 13 disposed on the movable component and used to perforate the sponge. The sponge is placed on the movable component 12, which is aligned with the turbine fan on the chair back. The position of the sponge is fixed and the perforation area on the sponge is determined. The perforation component 13 cuts the inside of the sponge and perforates it in layers.

[0034] Furthermore, such as Figure 3 , Figure 4 As shown, the active component 12 includes a slide rod 121 fixed on the slide table 11, a positioning platform 122 slidably connected to the slide rod 121, a positioning disk 123 vertically slidably connected to the positioning platform 122, and multiple sets of positioning rods 124 connected to the positioning disk 123. The positioning platform 122 moves down to the middle of the chair back, and the positioning rod 124 contacts the surrounding foam. The position of the turbine fan installed on the backrest is determined by rotating the angle, and the positioning platform 122 is adjusted to align with the turbine fan.

[0035] Furthermore, such as Figure 4 , Figure 5 As shown, the punching assembly 13 includes a placement frame 131 fixed on the positioning plate 123, clamping plates 132 connected to both sides of the placement frame 131, two sets of blades 133 slidably connected to the clamping plates 132, a cutting frame 134 vertically slidably connected to the center of the placement frame 131, and a heating blade 135 fixed to one side of the cutting frame 134.

[0036] Furthermore, such as Figure 4 , Figure 6As shown, the punching assembly 13 also includes a rising plate 136 slidably connected to the placement frame 131, multiple sets of coarse-hole needles 137 fixed to the rising plate 136, a lower pressure plate 138 connected to the side of the placement frame 131, a needle plate 139 slidably connected to the lower pressure plate 138, and multiple sets of fine-hole needles 130 fixed to the needle plate 139. After the sponge is fixed in position, the cutting frame 134 is raised, the heating blade 135 enters the sponge and rotates, cutting out a cavity in the middle of the sponge and dividing the sponge into an upper layer and a lower layer. Then the punching component 13 punches fine holes in the upper layer of the sponge and coarse holes in the lower layer of the sponge.

[0037] In this embodiment, by setting an opening component, the chair back sponge is precisely positioned, and ventilation holes of different diameters are set on the sponge in a gradient manner and connected through a cavity, thereby achieving a better ventilation effect in conjunction with the fan.

[0038] In detail, the clamping mechanism places the composite sponge onto the placement rack 131, and the positioning plate 123 moves down to contact the chair back on the conveying mechanism below. At this time, the fan and the surrounding strip sponge are already fixedly installed on the chair back. The top rod bends when it contacts the strip sponge, and a sensor is set on it. The bending angle of the multiple positioning rods 124 around the perimeter is used to determine whether the positioning platform 122 is facing the fan. The positioning platform 122 is driven to slide on the sliding rod 121 by the sliding device, thereby achieving precise positioning and determining that the drilling position is aligned with the negative pressure area of ​​the fan.

[0039] The sponge is placed on the placement rack 131 and secured by clamps 132 on both sides to prevent displacement during movement. The blade 133 below rises and slides to make a scratch on the bottom of the sponge, which goes deep into the sponge. Then the cutting rack 134 below rises and moves the heating blade 135 from the scratch into the sponge and rotates it. The heating blade 135 cuts around the center line inside the sponge to form a cavity. The rising plate 136 drives the coarse hole needle 137 to rise and make a coarse hole below the cavity. The lower pressure plate 138 drives the fine hole needle 130 to fall and make a fine hole on the upper layer of the cavity.

[0040] By creating cavities within the sponge and incorporating both coarse and fine pores, a gradient ventilation channel is formed, enhancing airflow. During seat use, when a person sits on the chair, the sponge is compressed and deformed. Fine pores have low air permeability, and even minor deformations can cause blockages in these channels. Therefore, when a person sits on the chair, large areas of pores become blocked, resulting in poor ventilation and hindering heat dissipation. While coarse pores offer higher air permeability, they significantly reduce the sponge's support and create turbulent, harsh airflow, which is not comfortable for the human body. Furthermore, coarse pores are more easily blocked by foreign objects. Therefore, this application adopts a solution of fine pores on the surface and coarse pores in the deep layers. Fine pores are used in the areas that come into contact with the human body to maintain the original breathability and comfort of the fine pores on the surface. Coarse pores are set in the bottom layer to connect with the fan, thereby improving the breathability efficiency. A cavity is set in the middle to connect all the fine and coarse pores. When sitting, the sponge deforms and is squeezed. At this time, a large number of dense pores on the top become blocked, while the coarse pores on the bottom still maintain a considerable ventilation effect. Assuming that the fine pores in the middle area are blocked, the coarse pores below the middle area are not blocked. The airflow is drawn in from the edge, and after entering the cavity, it is re-rectified. Part of it continues to flow downward through the coarse pores in the middle. In this process of changing the flow channel, some of the heat in the middle area can be carried away, thereby improving the ventilation and heat dissipation effect and combining the advantages of fine and coarse pores.

[0041] It should be noted that the thickness of the cavity does not need to be too large, so as to avoid the cavity being too large and affecting the support and comfort of the sponge. The thickness of the cavity can be adjusted by changing the thickness of the heating blade 135, thereby achieving a balance between functionality and structural rationality.

[0042] Its heating blade 135, fine hole needle 130, and coarse hole needle 137 all use electric heating, which melts the sponge instantly at high temperature, resulting in an extremely smooth cut with a ceramic-like seal. There are no debris, the sponge is not pulled, and the precision is high. The ceramic-like seal can also provide a certain support effect and reduce the deformation of the hole.

[0043] Furthermore, such as Figure 2 The multi-layer composite cushioning and decompression office chair production and assembly equipment also includes a sealing mechanism 2 located in front of the opening mechanism 1 and used to seal the sponge around the turbine fan. The sealing mechanism 2 includes an adhesive application component 21 for applying adhesive to the back panel and a barrier component 22 located behind the adhesive application component 21 and used to surround a layer of vertical sponge on the surrounding sponge.

[0044] Furthermore, such as Figure 7 As shown, the glue application assembly 21 includes a glue application plate 211 vertically slidably mounted on the conveying device 01, multiple sets of glue outlets 212 elastically connected to the glue application plate 211, a glue application brush 213 disposed below the glue outlets 212, and a glue application roller 214 disposed behind the enclosure assembly 22.

[0045] In this embodiment, by setting up the glue application component 21, a floating glue application method is used for the chair back with a certain curvature, so that the glue can fully cover the chair back.

[0046] In detail, the chair back is placed on the conveyor mechanism and moved below the adhesive application assembly 21. The adhesive application plate 211 moves downward, and adhesive is dispensed from the upper adhesive outlet 212. The adhesive application brush 213 then spreads the adhesive evenly. The adhesive outlet 212 and the adhesive application brush 213 are elastically mounted on the adhesive application plate 211 and can move up and down following the curvature of the chair back. The adhesive application roller 214 at the rear is used to apply adhesive to the strip sponge after it has been placed, thereby completing the overall bonding of the composite sponge.

[0047] After the adhesive is applied, the clamping device 02 places the strip sponge around the fan and presses it together for curing.

[0048] It should be noted that during the application of adhesive with the 213 adhesive brush, while ensuring proper adhesion, an excessive amount of adhesive should be applied to the inner side. This will result in a stronger sealing effect when the sponge strip is wrapped subsequently, as the adhesive will work in conjunction with the sponge strip.

[0049] Furthermore, such as Figure 8 , Figure 9 As shown, the enclosure assembly 22 includes a mounting frame 221 disposed in front of the glue roller 214, multiple sets of guide rollers 222 disposed on one side of the mounting frame 221, a fixing ring 223 vertically slidably connected to the mounting frame 221 and rotatably connected to the mounting frame 221, a cutter 224 slidably connected to the outside of the fixing ring 223, and multiple sets of fittings 225 disposed on the fixing ring 223.

[0050] The fitting 225 includes a rotating block 226 rotatably connected to the fixing ring 223, a fixing pin 227 disposed on the rotating block 226, a telescopic push rod 228 disposed behind and below the fixing pin 227, and a slidable blade 229 horizontally connected above the fixing pin 227. The glue application assembly 21 applies glue to the chair back, and then the clamping device 02 places the strip sponge around the turbine fan and glues it in place. The enclosure assembly 22 surrounds the sponge sheet on the side wall of the strip sponge around the perimeter, and cuts the upper and lower sides of the sponge sheet and attaches it to the strip sponge to fill the gaps.

[0051] In this embodiment, by setting up the enclosure component 22, a layer of sponge strips is wrapped around the fan. The sponge strips isolate the surrounding strip sponges, thereby forming a relatively sealed cavity. When the fan is working, the airflow mainly enters through the ventilation holes opened in the upper sponge, ensuring the ventilation effect.

[0052] In detail, the sponge strip is introduced from multiple sets of guide rollers 222 to the area below the fixing ring 223 and coated with adhesive on the outer surface of the sponge strip. It is then fixed by the fixing pin 227 on the rotating block 226. The fixing ring 223 rotates once, thus wrapping the sponge strip around the perimeter. During the rotation, the cutter 224 cuts the lower edge of the sponge strip in a regular pattern. After one rotation, the cutter 224 cuts the sponge strip. The blade 133 also cuts the upper edge of the sponge strip in a regular pattern. When the chair back reaches the area below the fixing ring 223, the fixing ring 223 moves down, and the rotating block 226 is equipped with a telescopic component to stick the sponge strip to the sides of the surrounding strip of sponge, forming a seal. At this time, the telescopic push rod 228 below the fixing pin 227 extends, inserting the lower edge of the sponge strip under the strip of sponge. Since the lower edge of the sponge strip has been cut, it can be squeezed under the sponge strip. The mutual compression between the sponges improves the sealing of the edge.

[0053] It should be noted that the strip-shaped sponge around the fan is glued together, which can easily create gaps. This allows air to enter through these gaps during negative pressure suction, reducing the ventilation effect of the upper vent. By wrapping a layer of sponge strips around the fan and using these strips to block multiple gaps, and by tucking the edges of the strips into the top and bottom of the sponge strips, a seal is achieved on both sides. After the composite sponge is placed and the seat is assembled, the sponge in this area is thicker than in other areas, resulting in stronger compression and a more effective seal.

[0054] The excess glue added at this location during the gluing process serves two purposes: firstly, it prevents insufficient glue from causing rapid bonding and preventing the sponge strip from being inserted; secondly, the excess glue fully fills the gaps between the sponge strip and the strip-shaped sponge component, suppressing the elasticity of the sponge strip and achieving a thorough seal.

[0055] Furthermore, such as Figure 10 As shown, the multi-layer composite buffer pressure relief office chair production and assembly equipment is characterized in that it further includes a composite mechanism 3 disposed behind the opening mechanism 1. The composite mechanism 3 includes a baffle 31 horizontally hinged behind the opening mechanism 1, a slide 32 fixed in front of the baffle 31, a negative pressure device 33 disposed on the upper and lower sides of the slide 32, and a push plate 34 disposed in front of the slide 32. The push plate 34 aligns the backrest sponge with the lower chair back and uses negative pressure to clean the sponge surface and unclog the air holes on the sponge during the movement.

[0056] In this embodiment, a composite mechanism 3 is set up to perform secondary calibration on the processed sponge and chair back, so as to achieve accurate alignment when the two are composited.

[0057] In detail, before the positioning platform 122 moves to the slide rail 32, the clamping plate 132 rotates to loosen the constraint on the sponge. The push plate 34 pushes the sponge onto the slide rail 32 and moves forward. After being adsorbed by the negative pressure device 33, the negative pressure device 33 adsorbs the surface of the sponge, sucking out dust and debris from the cutting and assembly process, and clearing the vent holes. The blade 133 makes a cross-shaped scratch on the lower layer, which is opened by the adsorption of the negative pressure device 33. The debris in the cavity can also be sucked out. The lower chair back is blocked by the baffle 31. As the composite sponge moves on the chair back, it adheres to the strip sponge on the chair back, completing the sponge assembly.

[0058] It should be noted that the upper edge of the sponge strip on the chair back after passing through the glue-coating roller 214 is also pressed onto the strip sponge, and then the treated sponge is laminated on top to achieve a full-range seal.

[0059] Example 2 like Figure 11 , Figure 12 As shown, components that are the same as or corresponding to those in Embodiment 1 are referred to using the same reference numerals as in Embodiment 1. For simplicity, only the differences from Embodiment 1 are described below. The difference between Embodiment 2 and Embodiment 1 is as follows: Furthermore, such as Figure 12 As shown, the multi-layer composite cushioning and pressure-reducing office chair production and assembly process, applied to the multi-layer composite cushioning and pressure-reducing office chair production and assembly equipment, includes the following steps: S1. Substrate positioning and attitude calibration: Fix the chair back frame with the pre-installed turbine fan on the conveying path, and at the same time carry the multi-layer composite sponge blank on the processing station; adjust the planar position and angle of the sponge blank so that its processing area is precisely aligned with the fan installation position on the chair back frame, and use circumferential multi-point contact feedback to lock the horizontal degree of freedom of the sponge and establish the reference coordinate system for the drilling operation. S2. Internal cavity construction and layered perforation: The sponge is subjected to internal thermal cutting to form a closed thin-walled cavity inside the sponge, separating the sponge into an independent surface breathable layer and a bottom air-conducting layer; then, the two layers are punctured differently to form several through-holes in the surface breathable layer and several through-holes in the bottom air-conducting layer, ensuring that all pores are connected to the central cavity and that the pore walls are heat-fused to form a smooth sealing edge. S3. Sealing treatment of the fan area: Apply adhesive to the outer periphery of the turbine fan of the chair back frame. The application process adapts to the curved surface of the chair back and leaves excess adhesive around the fan. Adhere strip sponge around the fan and apply pressure for initial curing. Then take sheet sponge and attach it around the side wall of the strip sponge. Cut grooves on the upper and lower edges of the sheet sponge and squeeze it into the gap between the strip sponge and the chair back frame. Use the elasticity of the sponge itself and the adhesive to fill the gap to build a closed sealing barrier. S4. Composite Assembly and Surface Finishing: Push the perforated sponge layer to the composite station, allowing it to pass over the negative pressure adsorption area during movement. Use airflow suction to remove floating dust and debris from the sponge surface and back-blown to clear the pores in each layer. When the sponge layer moves to the top of the chair back frame, calibrate its relative position to the sealing structure below and apply uniform pressure to ensure a tight bond between the two. After the adhesive has cured, check the pore patency and overall sealing performance to complete the assembly.

[0060] In the description of this invention, it should be understood that the terms "front and back", "left and right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0061] Of course, those skilled in the art should understand that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be understood as a limitation on the quantity.

[0062] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art under the technical guidance of the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A multi-layer composite cushioning and pressure-reducing office chair production and assembly equipment, comprising a material conveying device and a material clamping device, characterized in that, Also includes: A perforation mechanism, which is disposed on a material conveying mechanism and used for perforating a sponge, includes a slide table, a movable component disposed on the slide table for aligning the sponge with the chair back, and a perforation component disposed on the movable component for perforating the sponge. Place the sponge onto the movable component, align the movable component with the turbine fan on the chair back, fix the position of the sponge and determine the perforation area on the sponge, and the perforation component cuts and perforates the inside of the sponge in layers.

2. The multi-layer composite cushioning and pressure-reducing office chair production and assembly equipment according to claim 1, characterized in that, The movable components include a slide rod fixed to the slide table, a positioning platform slidably connected to the slide rod, a positioning disk vertically slidably connected to the positioning platform, and multiple sets of positioning rods connected to the positioning disk; The positioning platform is moved down to the middle of the chair back, and the positioning rod contacts the surrounding foam. The position of the turbine fan installed on the backrest is determined by rotating the angle, and the positioning platform is adjusted to align with the turbine fan.

3. The multi-layer composite cushioning and pressure-reducing office chair production and assembly equipment according to claim 2, characterized in that, The punching assembly includes a placement frame fixed on a positioning plate, clamps connected to both sides of the placement frame, two sets of blades slidably connected to the clamps, a cutting frame slidably connected vertically to the center of the placement frame, and a heating blade fixed to one side of the cutting frame.

4. The multi-layer composite cushioning and pressure-reducing office chair production and assembly equipment according to claim 3, characterized in that, The punching assembly also includes a rising plate slidably connected to the placement frame, multiple sets of coarse-hole needles fixed on the rising plate, a lower pressure plate connected to the side of the placement frame, a needle plate slidably connected to the lower pressure plate, and multiple sets of fine-hole needles fixed on the needle plate. After the sponge is positioned, the cutting frame rises, the heating blade enters the sponge and rotates, cutting a cavity in the middle of the sponge and dividing the sponge into an upper and lower layer. Then, the punching component punches fine holes in the upper layer of the sponge and coarse holes in the lower layer of the sponge.

5. The multi-layer composite cushioning and pressure-reducing office chair production and assembly equipment according to claim 1, characterized in that, It also includes a sealing mechanism located in front of the opening mechanism for sealing the sponge around the turbine fan. The sealing mechanism includes an adhesive application assembly for applying adhesive to the back plate and a barrier assembly located behind the adhesive application assembly for surrounding the sponge with a layer of vertical sponge.

6. The multi-layer composite cushioning and pressure-reducing office chair production and assembly equipment according to claim 5, characterized in that, The adhesive application assembly includes an adhesive application plate that is vertically slidably mounted on a conveying device, multiple sets of adhesive outlets that are elastically connected to the adhesive application plate, adhesive brushes located below the adhesive outlets, and adhesive rollers located behind the enclosure assembly.

7. The multi-layer composite cushioning and pressure-reducing office chair production and assembly equipment according to claim 6, characterized in that, The enclosure assembly includes a mounting frame positioned in front of the adhesive roller, multiple sets of guide rollers positioned on one side of the mounting frame, a fixed ring vertically slidably connected to the mounting frame and rotatably connected to the mounting frame, and multiple sets of fittings on the fixed ring with a cutter slidably connected to the outside of the fixed ring.

8. The multi-layer composite cushioning and pressure-reducing office chair production and assembly equipment according to claim 7, characterized in that, The fitting includes a rotating block rotatably connected to a fixed ring, a fixed pin disposed on the rotating block, a telescopic push rod disposed behind and below the fixed pin, and a slidable blade horizontally connected above the fixed pin. The gluing assembly applies glue to the chair back, and then the clamping device places the strip sponge around the turbine fan and glues it in place. The enclosure assembly surrounds the sponge sheet on the side walls of the strip sponge around the perimeter, and cuts the top and bottom sides of the sponge sheet and attaches it to the strip sponge to fill the gaps.

9. The multi-layer composite cushioning and pressure-reducing office chair production and assembly equipment according to claim 1, characterized in that, It also includes a composite mechanism located behind the opening mechanism, the composite mechanism including a baffle horizontally hinged behind the opening mechanism, a slide fixed in front of the baffle, negative pressure devices located on the upper and lower sides of the slide, and a push plate located in front of the slide. The push plate aligns the backrest foam with the lower chair back, and uses negative pressure to clean the foam surface and unclog the air holes on the foam during the movement.

10. A production and assembly process for a multi-layer composite cushioning and pressure-reducing office chair, applied to the production and assembly equipment for a multi-layer composite cushioning and pressure-reducing office chair as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Substrate positioning and attitude calibration: Fix the chair back frame with the pre-installed turbine fan on the conveying path, and at the same time carry the multi-layer composite sponge blank on the processing station; adjust the planar position and angle of the sponge blank so that its processing area is precisely aligned with the fan installation position on the chair back frame, and use circumferential multi-point contact feedback to lock the horizontal degree of freedom of the sponge and establish the reference coordinate system for the drilling operation. S2. Internal cavity construction and layered perforation: The sponge is subjected to internal thermal cutting to form a closed thin-walled cavity inside the sponge, separating the sponge into an independent surface breathable layer and a bottom air-conducting layer; then, the two layers are punctured differently to form several through-holes in the surface breathable layer and several through-holes in the bottom air-conducting layer, ensuring that all pores are connected to the central cavity and that the pore walls are heat-fused to form a smooth sealing edge. S3. Sealing treatment of the fan area: Apply adhesive to the outer periphery of the turbine fan of the chair back frame. The application process adapts to the curved surface of the chair back and leaves excess adhesive around the fan. Adhere strip sponge around the fan and apply pressure for initial curing. Then take sheet sponge and attach it around the side wall of the strip sponge. Cut grooves on the upper and lower edges of the sheet sponge and squeeze it into the gap between the strip sponge and the chair back frame. Use the elasticity of the sponge itself and the adhesive to fill the gap to build a closed sealing barrier. S4. Composite Assembly and Surface Finishing: Push the perforated sponge layer to the composite station, allowing it to pass over the negative pressure adsorption area during movement. Use airflow suction to remove floating dust and debris from the sponge surface and back-blown to clear the pores in each layer. When the sponge layer moves to the top of the chair back frame, calibrate its relative position to the sealing structure below and apply uniform pressure to ensure a tight bond between the two. After the adhesive has cured, check the pore patency and overall sealing performance to complete the assembly.

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