Polyurethane sponge forming and foaming equipment and processing method thereof

Abstract

The invention is suitable for the technical field of sponge foaming, and provides polyurethane sponge forming and foaming equipment which comprises a polyurethane sponge foaming tank used for forming and foaming polyurethane sponge, a polyurethane sponge foaming cavity is formed in the polyurethane sponge foaming tank, and the polyurethane sponge foaming cavity is used for foaming and forming the polyurethane sponge; the equipment further comprises a defoaming mechanism, and the defoaming mechanism is movably assembled in the polyurethane sponge foaming cavity and can do periodic reciprocating motion along the polyurethane sponge foaming cavity. The defoaming mechanism comprises a defoaming push disc, the defoaming push disc comprises a defoaming net disc, the defoaming net disc is composed of a plurality of defoaming rods, and the multiple defoaming rods are distributed in a multi-row and multi-column crossed mode; a plurality of suction openings are formed in the defoaming rod, filter cloth is additionally arranged on the suction openings, and the filter cloth is used for blocking polyurethane outside on the basis that the suction openings can extract gas; the device helps to discharge bubbles from polyurethane, and prevents excessive stirring from damaging the chemical and physical balance of a foaming system at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of sponge foaming, and more specifically, to polyurethane sponge forming and foaming equipment and a processing method thereof. Background Art

[0002] Polyurethane sponge, also known as PU sponge, is a porous material made from a polyurethane polymer. It is one of the most widely used forms of the polyurethane material family and is renowned for its exceptional cushioning, elasticity, sound absorption, thermal insulation, filterability, and plasticity. The core step in the manufacturing process is the molding and foaming of polyurethane sponge. Through precisely controlled chemical reactions and physical conditions, the liquid raw material is transformed into a porous solid with a specific pore structure.

[0003] In the foaming molding of polyurethane sponge, the presence of bubbles inside may cause uneven foaming and reduce the density of the product, which not only affects the mechanical properties of the product, but also has a negative impact on the surface quality; therefore, the existing technology will add some bubble elimination mechanisms or add bubble elimination steps; for example, a foaming molding device for polyurethane with application number 202311507420.4 discloses that "the tumbling motion of the spiral auger helps bubbles rise from the polyurethane to the liquid surface", which requires large-scale stirring to help the bubbles be discharged from the polyurethane, because the gas leaked by the puncture will have an escape path. If there is no large-scale stirring, the bubbles at the bottom of the polyurethane or in the polyurethane not covered by the spiral auger are difficult to discharge, but large-scale stirring will cause excessive stirring, resulting in the destruction of the chemical and physical balance of the foaming system.

[0004] Therefore, in order to help the bubbles to be discharged from the polyurethane while avoiding the destruction of the chemical and physical balance of the foaming system, a polyurethane sponge molding and foaming equipment and a processing method thereof are proposed. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a polyurethane sponge forming and foaming equipment and a processing method thereof.

[0006] The specific technical solution is: polyurethane sponge molding and foaming equipment, including a polyurethane sponge foaming tank for polyurethane sponge molding and foaming, the polyurethane sponge foaming tank is provided with a polyurethane sponge foaming cavity inside, and the polyurethane sponge foaming cavity is used for polyurethane sponge foaming molding; the equipment also includes a defoaming mechanism, the defoaming mechanism is movably assembled inside the polyurethane sponge foaming cavity, and can perform periodic reciprocating movement along the polyurethane sponge foaming cavity; the defoaming mechanism includes a defoaming push plate, the defoaming push plate includes a defoaming mesh plate, the defoaming mesh plate is composed of a plurality of defoaming rods, and the plurality of defoaming rods are cross-distributed in multiple rows and columns; a plurality of exhaust ports are provided on the defoaming rods, and a filter cloth is installed on the exhaust port, and the filter cloth is used to separate the polyurethane from the outside on the basis that the exhaust port can extract gas ; The polyurethane sponge foaming tank uses the polyurethane sponge foaming cavity inside it to carry out the polyurethane sponge foaming molding process, and the defoaming mechanism is started inside the polyurethane sponge foaming cavity and moves back and forth periodically along the polyurethane sponge foaming cavity; when the defoaming mechanism contacts the polyurethane, the defoaming mesh disk will use multiple rows and columns of cross-distributed defoaming rods to penetrate the polyurethane along the polyurethane storage space in turn to puncture the bubbles; while puncturing the bubbles, the exhaust port can be used to extract the gas to avoid the punctured gas requiring a certain escape path, reducing the gas from being easily locked in the polyurethane for the second time; the defoaming mechanism is interspersed with polyurethane replacement stirring, which helps to discharge bubbles from the polyurethane while avoiding excessive stirring that destroys the chemical and physical balance of the foaming system.

[0007] A further technical solution is that the defoaming push plate also includes a support ring and a support seat, the support ring cover is fixed on the outside of the defoaming mesh plate; the support seat includes a support column and a support plate, the support column is fixed on the support plate, and the support plate is fixed on the defoaming mesh plate; the support ring matches the space inside the polyurethane sponge foaming cavity, and the support ring can perform periodic reciprocating movement along the polyurethane sponge foaming cavity.

[0008] A further technical solution is that the defoaming mechanism also includes a material transport rack, which is installed on the upper end of the defoaming push plate; the material transport rack includes a driving part and a material transport part, and the driving part is installed on the material transport part; the material transport part is installed on the defoaming push plate; the material transport part is used to horizontally transport polyurethane, and the driving part is used to provide power for the material transport part.

[0009] A further technical solution is that the driving part includes a support rod and a driving seat; the support rod is installed at the end of the driving seat and is distributed in a straight line; the end of the support rod away from the driving seat is installed on the top of the polyurethane sponge foaming cavity; an electric telescopic rod is installed on the support rod, and the electric telescopic rod is used to drive the defoaming push plate and the material transport rack to perform periodic reciprocating movement in the polyurethane sponge foaming cavity.

[0010] A further technical solution is that the drive seat includes a sealing sleeve and a drive motor, and the drive motor is installed inside the sealing sleeve; a sealing disk is provided at the top of the sealing sleeve, and the sealing disk is used to seal the drive motor inside the sealing sleeve; the support rod is fixed on the sealing disk in an integral manner.

[0011] A further technical solution is that the drive seat also includes a transmission gearbox, which is installed at the end of the sealing sleeve, and the drive motor and the transmission gearbox are connected in power transmission; a mounting plate is provided around the transmission gearbox, and a drive shaft is inserted through the mounting plate, and the drive shaft and the mounting plate are rotatably connected through a bearing.

[0012] The material transfer parts include multiple longitudinal transfer pipes and multiple transverse transfer pipes. The multiple transverse transfer pipes are located around the transmission gear box and distributed in a circular array; the multiple longitudinal transfer pipe arrays are distributed between the multiple transverse transfer pipes; the longitudinal transfer pipes and the transverse transfer pipes are connected by power transmission through a power transmission box; the power transmission box is installed at the connection between the longitudinal transfer pipes and the transverse transfer pipes; the transverse transfer pipes are connected to the transmission gear box by power transmission.

[0013] The longitudinal adjustment tube and the transverse adjustment tube adopt the same structure; the transverse adjustment tube is provided with a buffer chamber and a material transfer chamber inside thereof, the buffer chamber is located above the material transfer chamber, and the buffer chamber and the material transfer chamber are connected; the longitudinal adjustment tube and the transverse adjustment tube are provided with multiple discharge holes at their bottoms.

[0014] The feed chamber is provided with an auger, which is distributed along the main body of the feed chamber and can rotate within the feed chamber to transfer the material. The auger is powered by a transmission gearbox. A plurality of material holes are provided at the bottom of the transverse adjustment tube, which are connected to the feed chamber. A vacuum air pipe is installed at the top of the buffer chamber to extract the gas entering the buffer chamber. During the periodic reciprocating movement of the defoaming mechanism along the polyurethane sponge foaming chamber, the plurality of longitudinal adjustment tubes and the plurality of transverse adjustment tubes form a mesh body. The plurality of longitudinal adjustment tubes and the plurality of transverse adjustment tubes forming the mesh body utilize the auger within them to mobilize the polyurethane to puncture bubbles. The vacuum air pipe then acts directly on the punctured bubbles to precisely exhaust the gas, thereby eliminating or shortening the path for gas escape. The plurality of longitudinal adjustment tubes and the plurality of transverse adjustment tubes then mobilize the polyurethane in all directions across their cross-sections, achieving full puncture of bubbles and exhaust of gas based on the full mixing of the polyurethane.

[0015] A transmission gear set for power transmission connection is installed inside the power transmission box and the transmission gear box; the transmission gear set includes a driving conical tooth and a plurality of driven conical teeth, and the plurality of driven conical teeth are arrayed around the driving conical tooth; the driven conical teeth and the driving conical teeth are vertically distributed; the driven conical teeth and the driving conical teeth are meshed with each other; a driven shaft is fixed on the driven conical teeth, and the driven shaft is located on the column center line of the driven conical teeth; a driving shaft is fixed on the driving conical teeth, and the driving shaft is located on the column center line of the driving conical teeth.

[0016] It should be noted that the driving shaft inside the transmission gearbox is fixed to the output shaft of the drive motor, the driven shaft inside the transmission gearbox is fixed to the driving shaft, and the driving shaft is fixed to the end of the auger; The driving shaft inside the power transmission box is fixed on the auger, and the driven shaft of the power transmission box is fixed on the auger inside the longitudinal adjustment tube; a material through hole is opened on the side wall of the power transmission box, and the material through hole is used to insert the auger; the transmission gear set inside the power transmission box is only in half of its internal space.

[0017] Another object of the present application is to provide a method for processing a polyurethane sponge forming and foaming device, comprising the following steps: Step 1: Pre-foaming Inject polyol, isocyanate, catalyst and other raw materials into the polyurethane sponge foaming cavity of the foaming tank in proportion, start low-speed mixing at 200-500 rpm until the initial stage of the milky white stage, and the viscosity at the initial stage of the milky white stage is 1500 mPa·s; Step 2: Dynamic defoaming and precise exhaust S1. The mesh defoaming mechanism is activated. The defoaming mesh disk carries multiple rows of cross-distributed defoaming rods, which periodically reciprocate along the Z-axis of the polyurethane sponge foaming cavity. The defoaming rods penetrate 80%-90% of the foam thickness, directly puncturing the bubble membrane to achieve three-dimensional puncture defoaming. S2. Multiple exhaust ports located on the defoaming rod activate the moment the bubble is punctured, directly extracting the released CO2, shortening the gas escape path to no more than 1 mm, and completing simultaneous vacuum extraction. S3. The augers in the longitudinal and transverse maneuvering tubes rotate at a low speed of 50-100 rpm, gently turning the material between punctures to promote uniform mixing of the raw materials while preventing shear forces from damaging the cell structure. Step 3: Adaptive Path Control S1. Pressure feedback regulation: A pressure sensor array is deployed within the polyurethane sponge foaming cavity to monitor the air pressure in each area in real time. When the local air pressure exceeds 1.5 kPa, the defoaming mechanism is controlled to move to that area first. S2. Temperature coordinated control: If the core temperature exceeds 130°C, the cooling pipe is activated to allow 25°C heat transfer oil to flow to prevent thermal runaway. Step 4: Post-curing and demoulding.

[0018] Compared with the prior art, the present invention has the following advantages: 1. During the process of the polyurethane sponge foaming tank 100 using the polyurethane sponge foaming cavity 300 opened therein to foam and mold the polyurethane sponge, the defoaming mechanism 400 is started to move back and forth periodically along the polyurethane sponge foaming cavity 300. When the defoaming mechanism 400 contacts the polyurethane, the defoaming net plate 4102 uses multiple rows and columns of cross-distributed defoaming rods to penetrate the polyurethane along the polyurethane storage space in sequence to puncture bubbles. While puncturing the bubbles, the exhaust port can be used to extract the gas, thereby avoiding the need for a certain escape path for the punctured gas and reducing the likelihood of the gas being locked in the polyurethane for a second time. The defoaming mechanism 400 penetrates the polyurethane by replacing and stirring, thereby helping to discharge bubbles from the polyurethane while avoiding excessive stirring that destroys the chemical and physical balance of the foaming system. 2. During the periodic reciprocating movement of the defoaming mechanism 400 along the polyurethane sponge foaming cavity 300, the multiple longitudinal adjustment tubes 4222 and the multiple transverse adjustment tubes 4223 form a network body. The multiple longitudinal adjustment tubes 4222 and the multiple transverse adjustment tubes 4223 constituting the network body will utilize the auger 4227 inside thereof to mobilize the polyurethane to puncture bubbles, and then utilize the vacuum air pipe 4224 to directly act on the punctured bubble location for precise exhaust, thereby eliminating or shortening the path for gas escape; and then the multiple longitudinal adjustment tubes 4222 and the multiple transverse adjustment tubes 4223 mobilize the polyurethane in all directions on the cross section where they are located, thereby puncturing bubbles in all directions and discharging gas on the basis of fully mixing the polyurethane. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of the polyurethane sponge forming and foaming equipment of the present invention; Figure 2 It is a cross-sectional view of the polyurethane sponge forming and foaming equipment of the present invention; Figure 3 Schematic diagram of the structure of the defoaming mechanism of the present invention; Figure 4 It is a structural schematic diagram of the defoaming push plate in the present invention; Figure 5 It is a structural schematic diagram of the material transport rack in the present invention; Figure 6 Schematic diagram of the structure of the driving member in the present invention; Figure 7 It is a structural schematic diagram of the driving seat in the present invention; Figure 8 It is a structural diagram of the material transport component in the present invention; Figure 9Schematic diagram of the structure of the transverse adjustment tube in the present invention; Figure 10 is a cross-sectional view of the transverse adjustment tube of the present invention; Figure 11 It is a structural schematic diagram of the transmission gear set in the present invention.

[0020] In the figure: polyurethane sponge foaming tank 100, base 200, polyurethane sponge foaming chamber 300, defoaming mechanism 400; defoaming push plate 410, material transfer frame 420; driving member 421, material transfer member 422; support ring 4101, defoaming mesh plate 4102, support seat 4103; support rod 4211, drive seat 4212, sealing plate 4213, sealing sleeve 4214, transmission gear box 4215, drive shaft 4216, mounting plate 4217; power transmission box 4221, longitudinal adjustment pipe 4222, transverse adjustment pipe 4223, vacuum air pipe 4224, buffer chamber 4225, material transfer chamber 4226, auger 4227, material through hole 4228, active conical gear 4229, active shaft 4230, driven shaft 4231, driven conical gear 4232. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] In the embodiment of the present invention, please refer to Figure 1 and Figure 2 : A polyurethane sponge molding and foaming device, comprising a polyurethane sponge foaming tank 100 for polyurethane sponge molding and foaming, wherein the polyurethane sponge foaming tank 100 has a polyurethane sponge foaming cavity 300 formed therein, and the polyurethane sponge foaming cavity 300 is used for polyurethane sponge foaming molding; Further explanation of the "polyurethane sponge foaming tank 100": The polyurethane sponge foaming tank 100 belongs to the prior art, and the specific structure or specific components of the polyurethane sponge foaming tank 100 also belong to the prior art, and can be directly purchased on the market, and can also be referred to in existing literature; At the same time, a base 200 is installed at the bottom of the polyurethane sponge foaming tank 100, and a control panel is installed on the side wall of the polyurethane sponge foaming tank 100; Please continue reading Figure 2-Figure 4: The device also includes a defoaming mechanism 400, which is movably assembled inside the polyurethane sponge foaming cavity 300 and can perform periodic reciprocating movement along the polyurethane sponge foaming cavity 300; The defoaming mechanism 400 includes a defoaming push plate 410, which includes a defoaming mesh plate 4102. The defoaming mesh plate 4102 is composed of multiple defoaming rods, which are arranged in multiple rows and columns. The defoaming rods are provided with multiple air vents, each of which is equipped with a filter cloth. The filter cloth is used to block the polyurethane from entering the air vents while allowing the air to be extracted. Further elaboration on the "filter cloth": "filter cloth" that can ensure the passage of gas while keeping the polyurethane barrier outside includes glass fiber coated cloth, polyester non-woven fabric, polypropylene mesh cloth and PTFE composite membrane, etc. There is no restriction on the specific type, as long as it can ensure the passage of gas while keeping the polyurethane barrier outside. Polyester non-woven fabric is preferably used here; Therefore, in the face of existing polyurethane sponge forming and foaming equipment that will add some bubble elimination mechanisms, in order to help bubbles be discharged from the polyurethane while avoiding destroying the chemical and physical balance of the foaming system, the present application can achieve the following: During the process of polyurethane sponge foaming molding by using the polyurethane sponge foaming cavity 300 opened inside the polyurethane sponge foaming tank 100, the defoaming mechanism 400 is started to move back and forth periodically along the polyurethane sponge foaming cavity 300 inside the polyurethane sponge foaming cavity 300; when the defoaming mechanism 400 contacts the polyurethane, the defoaming mesh plate 4102 will use multiple rows and columns of cross-distributed multiple defoaming rods to penetrate the polyurethane along the polyurethane storage space in turn to puncture the bubbles; while puncturing the bubbles, the exhaust port can be used to extract the gas to avoid the punctured gas requiring a certain escape path, reducing the gas from being easily locked in the polyurethane for the second time; the defoaming mechanism 400 is interspersed through the polyurethane for replacement stirring, which helps to discharge bubbles from the polyurethane while avoiding excessive stirring to destroy the chemical and physical balance of the foaming system.

[0023] In the embodiment of the present invention, please refer to Figure 3 and Figure 4 : The defoaming push plate 410 also includes a support ring 4101 and a support seat 4103, the support ring 4101 is fixed to the outside of the defoaming net plate 4102; the support seat 4103 includes a support column and a support plate, the support column is fixed on the support plate, and the support plate is fixed on the defoaming net plate 4102; The support ring 4101 matches the space inside the polyurethane sponge foaming cavity 300 , and the support ring 4101 can perform periodic reciprocating movement along the polyurethane sponge foaming cavity 300 .

[0024] In the embodiment of the present invention, please refer to Figure 3 、 Figure 4 and Figure 5 : The defoaming mechanism 400 also includes a material transfer frame 420, which is installed on the upper end of the defoaming push plate 410; the material transfer frame 420 includes a driving member 421 and a material transfer member 422, the driving member 421 is installed on the material transfer member 422; the material transfer member 422 is installed on the defoaming push plate 410; The material transporting member 422 is used to laterally transport the polyurethane, and the driving member 421 is used to provide power for the material transporting member 422 .

[0025] For further information, see Figure 6 and Figure 7 : The driving member 421 includes a support rod 4211 and a driving seat 4212; the support rod 4211 is mounted on the end of the driving seat 4212 and is distributed in a straight line; the end of the support rod 4211 away from the driving seat 4212 is mounted on the top of the polyurethane sponge foaming cavity 300; An electric telescopic rod is installed on the support rod 4211, and the electric telescopic rod is used to drive the defoaming push plate 410 and the material transport frame 420 to perform periodic reciprocating movement along the polyurethane sponge foaming cavity 300.

[0026] Further explanation of the "electric telescopic rod": the electric telescopic rod can be replaced by a hydraulic telescopic rod, or a pneumatic telescopic rod, etc. There is no restriction on the specific structure, as long as it can drive the defoaming push plate 410 and the material transport rack 420 to move periodically back and forth in the polyurethane sponge foaming cavity 300. Polyester non-woven fabric is preferably used here.

[0027] In the embodiment of the present invention, please refer to Figure 6 and Figure 7 : The drive seat 4212 includes a sealing sleeve 4214 and a drive motor, and the drive motor is installed inside the sealing sleeve 4214; a sealing disk 4213 is provided at the top of the sealing sleeve 4214, and the sealing disk 4213 is used to seal the drive motor inside the sealing sleeve 4214; the support rod 4211 is fixed on the sealing disk 4213 in an integral manner.

[0028] It should be noted that the drive motor and the power wiring method of the drive motor are both existing technologies. Their detailed structures can be found in existing literature journals, and they can also be purchased directly on the market, or parts can be purchased on the market to assemble them, etc.; they are not what the present invention wants to protect, so they will not be elaborated here, nor are they drawn in the accompanying drawings.

[0029] In the embodiment of the present invention, please refer to Figure 7 : The driving seat 4212 also includes a transmission gear box 4215, which is installed at the end of the sealing sleeve 4214, and the driving motor and the transmission gear box 4215 are connected in power transmission; A mounting plate 4217 is provided around the transmission gear box 4215 , and a driving shaft 4216 is inserted through the mounting plate 4217 . The driving shaft 4216 and the mounting plate 4217 are rotatably connected via a bearing.

[0030] See also Figure 5 、 Figures 8-10 The material transfer member 422 includes a plurality of longitudinal transfer tubes 4222 and a plurality of transverse transfer tubes 4223. The plurality of transverse transfer tubes 4223 are located around the transmission gear box 4215 and are distributed in a circular array. The plurality of longitudinal transfer tubes 4222 are distributed in an array between the plurality of transverse transfer tubes 4223. The longitudinal adjustment tube 4222 and the transverse adjustment tube 4223 are connected by power transmission through the power transmission box 4221; the power transmission box 4221 is installed at the connection between the longitudinal adjustment tube 4222 and the transverse adjustment tube 4223; the transverse adjustment tube 4223 is connected to the transmission gear box 4215 for power transmission.

[0031] In the embodiment of the present invention, see Figures 8-10 The longitudinal adjustment tube 4222 and the transverse adjustment tube 4223 have the same structure; the transverse adjustment tube 4223 has a buffer chamber 4225 and a material transfer chamber 4226 formed therein, the buffer chamber 4225 is located above the material transfer chamber 4226, and the buffer chamber 4225 and the material transfer chamber 4226 are in communication; The longitudinal adjustment pipe 4222 and the transverse adjustment pipe 4223 are both provided with a plurality of discharge holes at the bottom thereof.

[0032] See also Figure 9 and Figure 10 The material transfer chamber 4226 is provided with an auger 4227, which is distributed along the main body of the material transfer chamber 4226 and can rotate inside the material transfer chamber 4226 to transfer the material; the auger 4227 is connected to the transmission gear box 4215 through the power transmission; a plurality of material through holes are opened at the bottom of the horizontal adjustment tube 4223, and the material through holes are connected to the material transfer chamber 4226; A vacuum air pipe 4224 is installed on the top of the buffer chamber 4225 , and the vacuum air pipe 4224 is used to extract the gas into the buffer chamber 4225 .

[0033] Therefore, during the periodic reciprocating movement of the defoaming mechanism 400 along the polyurethane sponge foaming cavity 300, the multiple longitudinal adjustment tubes 4222 and the multiple transverse adjustment tubes 4223 form a network body, and the multiple longitudinal adjustment tubes 4222 and the multiple transverse adjustment tubes 4223 constituting the network body will utilize the auger 4227 inside thereof to mobilize the polyurethane to puncture the bubbles, and then utilize the vacuum air pipe 4224 to directly act on the punctured bubbles for precise exhaust, thereby eliminating or shortening the path for gas escape; and then the multiple longitudinal adjustment tubes 4222 and the multiple transverse adjustment tubes 4223 mobilize the polyurethane in all directions on the cross section where they are located, so as to realize all-round puncturing of bubbles and exhaust of gas on the basis of fully mixing the polyurethane.

[0034] In the embodiment of the present invention, please refer to Figure 10 and Figure 11 The power transmission box 4221 and the transmission gear box 4215 are internally installed with a transmission gear set for power transmission connection; the transmission gear set includes a driving conical tooth 4229 and a plurality of driven conical teeth 4232, and the plurality of driven conical teeth 4232 are arrayed around the driving conical tooth 4229; the driven conical teeth 4232 and the driving conical teeth 4229 are arranged perpendicularly; the driven conical teeth 4232 and the driving conical teeth 4229 are meshed with each other; A driven shaft 4231 is fixed to the driven conical tooth 4232 , and the driven shaft 4231 is located on the cylindrical center line of the driven conical tooth 4232 ; a driving shaft 4230 is fixed to the driving conical tooth 4229 , and the driving shaft 4230 is located on the cylindrical center line of the driving conical tooth 4229 .

[0035] It should be noted that the driving shaft 4230 inside the transmission gear box 4215 is fixed to the output shaft of the driving motor, the driven shaft 4231 inside the transmission gear box 4215 is fixed to the driving shaft 4216, and the driving shaft 4216 is fixed to the end of the auger 4227; The driving shaft 4230 inside the power transmission box 4221 is fixed on the auger 4227, and the driven shaft 4231 of the power transmission box 4221 is fixed on the auger 4227 inside the longitudinal adjustment tube 4222; a material through hole 4228 is opened on the side wall of the power transmission box 4221, and the material through hole 4228 is used to insert the auger 4227; the transmission gear set inside the power transmission box 4221 is only in half of its internal space.

[0036] In an embodiment of the present invention, a method for processing a polyurethane sponge forming and foaming device comprises the following steps: Step 1: Pre-foaming Inject polyol, isocyanate, catalyst and other raw materials into the polyurethane sponge foaming cavity 300 of the foaming tank in proportion, start low-speed mixing at 200-500 rpm until the initial stage of the milky white stage, and the viscosity at the initial stage of the milky white stage is 1500 mPa·s; Step 2: Dynamic defoaming and precise exhaust S1. Activate the mesh defoaming mechanism 400. The defoaming mesh plate 4102 carries multiple rows of cross-distributed defoaming rods (0.5-1 mm in diameter, 3-5 mm apart). These rods periodically reciprocate along the Z axis of the polyurethane sponge foaming cavity 300 (at a speed of 5-10 cm / s). The rods penetrate 80%-90% of the foam thickness, directly puncturing the bubble membrane and achieving three-dimensional defoaming. S2. Multiple exhaust ports located on the defoaming rod activate (negative pressure -0.5-0.8 bar) the moment the bubble is punctured, directly extracting the released CO2, shortening the gas escape path to no more than 1 mm (traditional path >10 mm), completing simultaneous vacuum extraction. S3. The auger 4227 in the longitudinal and transverse maneuvering tubes 4222 and 4223 rotates at a low speed of 50-100 rpm, slightly turning the material between punctures to promote uniform mixing of the raw materials (increased by 15%) while preventing shear forces from damaging the cell structure. Step 3: Adaptive Path Control S1. Pressure feedback regulation: A pressure sensor array is deployed within the polyurethane sponge foaming chamber 300 to monitor the air pressure in each region in real time. When the local air pressure exceeds 1.5 kPa (indicating gas enrichment), the defoaming mechanism 400 is controlled to move preferentially to that region. S2. Temperature coordinated control: If the core temperature exceeds 130°C, the cooling pipe (embedded in the adjustment pipe) is activated to flow 25°C heat transfer oil to prevent thermal runaway; Step 4: Post-curing and demoulding.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A polyurethane sponge forming and foaming device, comprising a polyurethane sponge foaming tank (100) for forming and foaming polyurethane sponge, wherein the polyurethane sponge foaming tank (100) has a polyurethane sponge foaming cavity (300) formed therein, and the polyurethane sponge foaming cavity (300) is used for polyurethane sponge foaming and forming; characterized in that: The device further comprises a defoaming mechanism (400), wherein the defoaming mechanism (400) is movably assembled inside the polyurethane sponge foaming cavity (300) and can perform periodic reciprocating movement along the polyurethane sponge foaming cavity (300); The defoaming mechanism (400) includes a defoaming push plate (410), the defoaming push plate (410) includes a defoaming net plate (4102), and the defoaming net plate (4102) is composed of a plurality of defoaming rods, which are cross-distributed in multiple rows and columns; a plurality of air exhaust ports are provided on the defoaming rods, and filter cloths are installed on the air exhaust ports. The filter cloths are used to block polyurethane from the outside while the air exhaust ports can extract gas.

2. The polyurethane sponge forming and foaming equipment according to claim 1, characterized in that: The defoaming push plate (410) further comprises a support ring (4101) and a support seat (4103), wherein the support ring (4101) is fixedly mounted on the outside of the defoaming net plate (4102); the support seat (4103) comprises a support column and a support plate, wherein the support column is fixed on the support plate, and the support plate is fixed on the defoaming net plate (4102); The support ring (4101) matches the space inside the polyurethane sponge foaming cavity (300), and the support ring (4101) can perform periodic reciprocating movement along the polyurethane sponge foaming cavity (300).

3. The polyurethane sponge forming and foaming equipment according to claim 1, characterized in that: The defoaming mechanism (400) further includes a material transfer frame (420), which is mounted on the upper end of the defoaming push plate (410); the material transfer frame (420) includes a driving member (421) and a material transfer member (422), the driving member (421) is mounted on the material transfer member (422); and the material transfer member (422) is mounted on the defoaming push plate (410); The material transporting member (422) is used to laterally transport the polyurethane, and the driving member (421) is used to provide power for the material transporting member (422).

4. The polyurethane sponge forming and foaming equipment according to claim 3, characterized in that: The driving member (421) includes a support rod (4211) and a driving seat (4212); the support rod (4211) is mounted on the end of the driving seat (4212) and is distributed in a straight line; the end of the support rod (4211) away from the driving seat (4212) is mounted on the top of the polyurethane sponge foaming cavity (300); An electric telescopic rod is installed on the support rod (4211), and the electric telescopic rod is used to drive the defoaming push plate (410) and the material transport frame (420) to perform periodic reciprocating movement along the polyurethane sponge foaming cavity (300).

5. The polyurethane sponge forming and foaming equipment according to claim 4, characterized in that: The drive seat (4212) comprises a sealing sleeve (4214) and a drive motor, wherein the drive motor is mounted inside the sealing sleeve (4214); a sealing disk (4213) is provided on the top of the sealing sleeve (4214), and the sealing disk (4213) is used to seal the drive motor inside the sealing sleeve (4214); and the support rod (4211) is fixed integrally to the sealing disk (4213).

6. The polyurethane sponge forming and foaming equipment according to claim 5, characterized in that: The driving seat (4212) further includes a transmission gear box (4215), which is mounted on the end of the sealing sleeve (4214), and the driving motor and the transmission gear box (4215) are connected in power transmission; A mounting plate (4217) is provided around each of the transmission gearbox (4215), a driving shaft (4216) is inserted through the mounting plate (4217), and the driving shaft (4216) and the mounting plate (4217) are rotatably connected via a bearing.

7. The polyurethane sponge forming and foaming equipment according to claim 6, characterized in that: The material transfer member (422) includes a plurality of longitudinal transfer tubes (4222) and a plurality of transverse transfer tubes (4223). The plurality of transverse transfer tubes (4223) are located around the transmission gear box (4215) and are distributed in a circular array. The plurality of longitudinal transfer tubes (4222) are distributed in an array between the plurality of transverse transfer tubes (4223). The longitudinal adjustment tube (4222) and the transverse adjustment tube (4223) are connected to each other through a power transmission box (4221); the power transmission box (4221) is installed at the connection between the longitudinal adjustment tube (4222) and the transverse adjustment tube (4223); the transverse adjustment tube (4223) is connected to the transmission gear box (4215) through power transmission.

8. The polyurethane sponge forming and foaming equipment according to claim 7, characterized in that: The longitudinal adjustment tube (4222) and the transverse adjustment tube (4223) have the same structure; the transverse adjustment tube (4223) is provided with a buffer chamber (4225) and a material transfer chamber (4226) therein, the buffer chamber (4225) is located above the material transfer chamber (4226), and the buffer chamber (4225) and the material transfer chamber (4226) are in communication; The longitudinal adjustment pipe (4222) and the transverse adjustment pipe (4223) are both provided with a plurality of discharge holes at their bottoms.

9. The polyurethane sponge forming and foaming equipment according to claim 8, characterized in that: An auger (4227) is provided inside the material transfer chamber (4226). The auger (4227) is distributed along the main body of the material transfer chamber (4226). The auger (4227) can rotate inside the material transfer chamber (4226) to transfer materials. The auger (4227) is connected to the transmission gear box (4215) through power transmission. A plurality of material through holes are provided at the bottom of the transverse adjustment tube (4223), and the material through holes are connected to the material transfer chamber (4226). A vacuum air pipe (4224) is installed on the top of the buffer cavity (4225), and the vacuum air pipe (4224) is used to extract gas entering the buffer cavity (4225).

10. A processing method of the polyurethane sponge forming and foaming equipment according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Pre-foaming Injecting polyol, isocyanate, catalyst and other raw materials into the polyurethane sponge foaming cavity (300) of the foaming tank in proportion, starting low-speed mixing at 200-500 rpm until the initial stage of the milky white phase, wherein the viscosity at the initial stage of the milky white phase is 1500 mPa·s; Step 2: Dynamic defoaming and precise exhaust S1. The mesh defoaming mechanism (400) is activated. The defoaming mesh plate (4102) carries multiple rows of cross-distributed defoaming rods, which periodically reciprocate along the Z axis of the polyurethane sponge foaming cavity (300). The penetration depth of the defoaming rods is 80%-90% of the thickness of the foam body, directly puncturing the bubble membrane to complete three-dimensional puncture defoaming. S2. Multiple exhaust ports located on the defoaming rod activate the moment the bubble is punctured, directly extracting the released CO2, shortening the gas escape path to no more than 1 mm, and completing simultaneous vacuum extraction. S3. The auger (4227) in the longitudinal transfer tube (4222) and the transverse transfer tube (4223) rotates at a low speed of 50-100 rpm, slightly turning the material between the punctures to promote uniform mixing of the raw materials while preventing shear forces from destroying the pore structure; Step 3: Adaptive Path Control S1. Pressure feedback regulation: a pressure sensor array is arranged in the polyurethane sponge foaming cavity (300) to monitor the air pressure in each area in real time; when the local air pressure exceeds 1.5 kPa, the defoaming mechanism (400) is controlled to move to the area first; S2. Temperature coordinated control: If the core temperature exceeds 130°C, the cooling pipe is activated to allow 25°C heat transfer oil to flow to prevent thermal runaway. Step 4: Post-curing and demoulding.

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