A sponge foaming machine and foaming method for automobile foam production

Abstract

The present invention discloses a sponge foaming machine for automobile foam production and a foaming method thereof, comprising a base plate, a raw material mixing component and a mold component, wherein the mold component is fixedly connected to the top surface of the base plate, the mold component comprises a lower mold, an upper mold and a top plate, and the raw material mixing component comprises a stirring tank, and the outer side of the stirring tank is fixedly sleeved with a fixed plate. The present invention provides a feeding component in the raw material mixing component, wherein a plurality of raw material boxes are used in the feeding component, and the ingredients can be separated and placed, and the ingredients are metered and fed by a metering pump, and no manual batching is required, and the feeding amount is accurate, and each raw material batch can be fed at the same time, which is convenient for mixing and stirring, and also reduces the manual input. At the same time, in addition to using blade stirring, the present invention also adds a gas stirring component at the bottom, and the gas is used to inflate the stirring chamber from the bottom end, and the raw materials at the bottom are stirred by gas, so as to avoid the situation that the raw materials are deposited at the bottom, ensure the uniformity of stirring, and improve the foaming quality.

Description

Technical Field

[0001] The invention relates to the technical field of foam foaming technology, in particular to a sponge foaming machine for automobile foam production and a foaming method thereof. Background Art

[0002] A large amount of foam is needed in cars, such as seats and roofs. Foam is essentially a sponge with the characteristics of elasticity, light weight, fast pressure-sensitive fixation, and easy use. Foam production is achieved by mixing and stirring the foaming agent, introducing air, and then placing it in a mold for foaming. Most existing foaming machines fully mix the required foaming agent and then pour it into the mold, so that the solution is fully foamed and grows into a whole large block in the mold to prepare foam. At present, the stirring of foam raw materials mostly abandons the manual stirring method and adopts mechanical stirring. For example, the Chinese utility model patent with authorization announcement number CN217752430U discloses a sponge foaming machine stirring mechanism, including a bottom plate, a barrel shell, a stirring component, a liquid outlet component, a heating plate and a barrel cover; the stirring component is used to stir the sponge raw material placed therein so that the sponge raw material has better expansion during foaming, and the liquid outlet component is used to lead the formed sponge liquid out of the stirring device after stirring. The mechanical stirring method can reduce manpower, but there are still the following defects:

[0003] At present, when adding raw materials to the stirring mechanism, manual weighing is still adopted. On the one hand, the accuracy is low, and on the other hand, the manual input is increased. Moreover, it is impossible to add multiple ingredients at the same time by manual input, and the ingredients can only be added in sequence, which affects the stirring effect in the stirring mechanism; and during stirring, the ingredients are affected by gravity, and some raw materials will precipitate, which leads to a decrease in stirring uniformity. During foaming, the number of pores in some sponges will decrease, and the overall foaming quality of the sponge will decrease.

[0004] For this reason, we propose a sponge foaming machine and a foaming method for automobile foam production to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a sponge foaming machine and a foaming method for producing automotive foam, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A sponge foaming machine for automobile foam production and a foaming method thereof, comprising a base plate, a raw material mixing component and a mold component, wherein the mold component is fixedly connected to the top surface of the base plate, the mold component comprises a lower mold, an upper mold and a top plate, the raw material mixing component comprises a stirring tank, the outer side of the stirring tank is fixedly sleeved with a fixed plate, and the fixed plate is fixedly connected to one end of the top plate;

[0007] A stirring chamber is provided inside the stirring tank, a blade stirring assembly is provided inside the stirring chamber, a gas stirring assembly is provided inside the bottom surface of the stirring tank, and a material discharge assembly is provided on one side of the top surface of the stirring tank;

[0008] The gas stirring assembly includes a plurality of coils and an air pump, wherein the plurality of coils are fixedly embedded in the bottom surface of the stirring tank, the plurality of coils are connected to a plurality of connecting pipes, the top surface of the coils is connected to a plurality of jet elbows, and the plurality of jet elbows are all connected to the stirring chamber, the air pump is fixedly connected to the side wall of the stirring tank, the air pump is connected to the coil located on the outside, the air pump is connected to one end of the air inlet pipe, and the other end of the air inlet pipe is connected to the air supply tank, and the air supply tank is placed on the top surface of the base plate;

[0009] The material discharge assembly includes an arc plate fixedly connected to one side of the top surface of the stirring tank, and a plurality of raw material boxes are fixedly and vertically embedded on the arc plate. The bottom ends of the plurality of raw material boxes are respectively connected to a plurality of bottom pipes. The side wall of the stirring tank is fixedly connected to an arc tube below the arc plate, and the plurality of bottom pipes are all connected to the arc tube. The arc tube is connected to a plurality of liquid supply pipes near one side of the stirring tank, and the ends of the plurality of liquid supply pipes pass through the side wall of the stirring tank and are connected to the stirring chamber. A metering pump is fixedly connected to the bottom pipe.

[0010] Preferably, the blade stirring assembly includes a main shaft, which is vertically rotatably connected to the center of the stirring chamber, and the outer wall of the main shaft is evenly fixed with multiple U-shaped frames, and multiple sub-shafts are vertically rotatably connected to the multiple U-shaped frames, and the multiple sub-shafts are located on the inner side of the U-shaped frames and are fixed with multiple stirring blades.

[0011] Preferably, a plurality of annular grooves are provided at the same vertical position corresponding to the plurality of sub-shafts on the top surface of the stirring chamber, a plurality of pinion gears are respectively fixed to the top ends of the plurality of sub-shafts, the pinion gears are located in the annular grooves, the inner side walls of the annular grooves are fixed to an inner gear ring, the inner gear ring is meshed and connected to the pinion gears, the stirring motor is fixed to the center position of the top surface of the stirring tank, the rotating shaft end of the stirring motor is fixed to the top end of the main shaft, the U-shaped frame is fixed to a scraper at one end away from the main shaft, and the scraper contacts the inner side wall of the stirring chamber.

[0012] Preferably, a discharge assembly is provided on the bottom surface of the stirring tank, and the discharge assembly includes four sub-liquid outlet pipes and a liquid pump fixedly connected to the bottom surface of the stirring tank, wherein the top ends of the four sub-liquid outlet pipes are fixedly connected to the bottom surface of the stirring tank, the top ends of the sub-liquid outlet pipes are connected to the stirring chamber, the other ends of the sub-liquid outlet pipes are fixedly connected to and connected to the liquid pump, and the bottom end of the liquid pump is connected to the main liquid outlet pipe.

[0013] Preferably, the bottom end of the main liquid outlet pipe is rotatably connected to a rotating tube, the rotating tube is communicated with the main liquid outlet pipe, the bottom end of the main liquid outlet pipe is horizontally fixedly connected to an adjusting nozzle, the adjusting nozzle is located above the lower mold, the outer side of the bottom end of the main liquid outlet pipe is fixedly connected to a small bracket, a small reduction servo motor is fixedly connected to the small bracket, the rotating shaft end of the small reduction servo motor is fixedly connected to a driving gear, the outer side of the rotating tube is fixedly sleeved with a driven gear, and the driving gear is meshingly connected to the driven gear.

[0014] Preferably, the lower mold is fixed to the base plate, the top surface of the base plate is located at the four corners of the lower mold and four sliding columns are vertically fixed to the outside, the upper mold is located directly above the lower mold, four sliding sleeves are horizontally fixed to the four corners of the upper mold, the four sliding sleeves are respectively slidably sleeved on the four sliding columns, the top plate is fixed to the top of the four sliding columns, the top plate is fixedly embedded with a hydraulic cylinder, and the output shaft of the hydraulic cylinder is fixed to the center position of the top surface of the upper mold.

[0015] Preferably, the lower mold is vertically slidably connected to the stripping template, the sealing frame ring is fixedly connected to the surrounding side of the stripping template, the base plate is provided with an inner cavity directly below the lower mold, the inner cavity is vertically slidably connected to a slide plate, four lifting rods are respectively fixed to the top surfaces of the four corners of the slide plate, the base plate is provided with four lower through holes at the same vertical position corresponding to the four lifting rods on the top surface of the inner cavity, and four upper through holes are provided at the same vertical position corresponding to the four lower through holes on the bottom surface of the lower mold, the lifting rods pass through the lower through holes and the upper through holes and are fixedly connected to the bottom surface of the stripping template, the base plate is fixedly connected to the main motor and the reduction gear box at the center position of the inner cavity, the center position of the inner cavity is vertically rotated to connect the screw rod, the center position of the slide plate is fixedly connected to the threaded sleeve, the output shaft of the main motor is fixedly connected to the input shaft of the reduction gear box, the output shaft of the reduction gear box is fixedly connected to the bottom end of the screw rod, a plurality of sliding rods are vertically fixed in the inner cavity, a plurality of sliding holes are provided on the slide plate, and the sliding rods are slidably sleeved on the inner sides of the sliding holes.

[0016] Preferably, the outer side wall of the lower mold is fixedly connected to a heating machine, the inside of the lower mold side wall is fixedly connected to a heating plate, the side wall of the upper mold is fixedly connected to an exhaust fan, the exhaust fan is connected to an exhaust pipe close to the upper mold, the exhaust pipe is connected to the inner side of the upper mold, the upper mold is fixedly connected to an air supply fan on the side away from the exhaust fan, the air supply fan is connected to an air supply pipe close to the upper mold, and the air supply pipe is connected to the inner side of the upper mold.

[0017] The foaming method of the sponge foaming machine for producing automotive foam comprises the following steps:

[0018] Step 1: preparing materials: preparing toluene diisocyanate, diphenylmethane diisocyanate, polyether polyol, polyurethane resin, amine-free volatile catalyst, silicone oil, polyurethane catalyst, foam stabilizer, foam opener and water as raw materials, and adding each ingredient into the raw material box in the blanking component;

[0019] Step 2: Feeding: Start multiple metering pumps to feed each raw material into the stirring chamber according to the weight ratio of each ingredient. The weight ratio of the raw materials is: 30 parts of toluene diisocyanate, 8.4 parts of diphenylmethane diisocyanate, 30 parts of polyether polyol, 25 parts of polyurethane resin, 0.1 parts of amine-free volatile catalyst, 0.5 parts of silicone oil, 0.5 parts of polyurethane catalyst, 1 part of foaming agent, 1 part of foaming agent, and 3.5 parts of water;

[0020] Step 3: Stirring and mixing: Start the stirring motor to drive the blade stirring assembly to stir the raw materials, and at the same time start the air pump in the gas stirring assembly to spray the gas from the bottom of the stirring chamber upward to stir the bottom of the raw materials. The stirring time is 20 minutes. At the same time, use a spray gun to spray the release agent on the inner wall of the lower mold and the inner wall of the upper mold;

[0021] Step 4: Injection: After the stirring is completed, the liquid pump in the discharge assembly is started to drive the raw materials to be injected into the lower mold. After the injection is completed, the small reduction servo motor is started to rotate the adjustment nozzle out of the lower mold;

[0022] Step 5 Foaming: After the injection is completed, start the hydraulic cylinder to close the upper mold and the lower mold, and start the heating machine to keep the temperature in the mold at 48-55°C through the heating plate, and at the same time start the vacuum pump to exhaust air to make the mold vacuum, and then start the air supply fan to slowly inject air into the mold for foaming. The foaming time is 8-10 minutes;

[0023] Step 6 Demolding: After foaming is completed, the upper mold is driven upward by the hydraulic cylinder, and the main motor is started to drive the demoulding plate upward by the screw rod to push the foam out. At this point, the foaming process is completely completed.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention provides a feeding assembly in the raw material mixing component. A plurality of raw material boxes are used in the feeding assembly, and the ingredients can be separated and placed. The ingredients are metered and fed through a metering pump, and there is no need for manual batching. The accuracy of the feeding amount is improved, and various raw materials can be fed at the same time, which is convenient for mixing and stirring, and also reduces manual input. At the same time, in addition to using blade stirring, the present invention also adds a gas stirring assembly at the bottom. The gas stirring assembly is used to inflate the stirring chamber from the bottom end, and the raw materials at the bottom are stirred by gas, so that sedimentation at the bottom of the raw materials is avoided, the uniformity of stirring is ensured, and the foaming quality is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the main structure in the first and second embodiments of the present invention;

[0027] Figure 2 It is a schematic diagram of the cutaway structure of the raw material mixing component in the first and second embodiments of the present invention;

[0028] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure of the structure at center A;

[0029] Figure 4 This is a schematic diagram of the structure of the gas stirring assembly in the first embodiment of the present invention;

[0030] Figure 5 This is a structural schematic diagram of a blade stirring assembly in a second embodiment of the present invention;

[0031] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure at B in the middle;

[0032] Figure 7 This is a structural schematic diagram of a discharging assembly in a second embodiment of the present invention;

[0033] Figure 8 It is a schematic diagram of a vertical cross-section structure of a base plate and a mold component in a second embodiment of the present invention;

[0034] Fig. 9 It is a schematic diagram of another vertical cross-sectional structure of the base plate and the mold component in the second embodiment of the present invention.

[0035] In the figure: 1, base plate; 2, raw material mixing component; 3, mold component; 11, inner cavity; 12, slide plate; 13, slide hole; 14, slide rod; 15, lifting rod; 16, main motor; 17, reduction gear box; 18, screw rod; 19, threaded sleeve; 110, lower through hole; 21, stirring tank; 22, stirring cavity; 23, blade stirring assembly; 24, gas stirring assembly; 25, feeding assembly; 26, discharging assembly; 27, ring groove; 28, inner gear ring; 29, stirring motor; 210, fixed plate; 231, main shaft; 232, U-shaped frame; 233, sub-shaft; 234, stirring blade; 235, scraper; 236, pinion; 241, coil; 242, air pump; 243, connecting pipe; 244, jet elbow; 245, air inlet pipe; 246, air supply tank; 251, arc plate; 252, raw material box; 253, bottom pipeline; 254, arc tube; 255, liquid supply pipe; 256, metering pump; 261, sub-liquid outlet pipe; 262, liquid pump; 263, main liquid outlet pipe; 264, rotating pipe; 265, adjusting nozzle; 266, small bracket; 267, small reduction servo motor; 268, driving gear; 269, driven gear; 31, lower mold; 32, upper mold; 33, top plate; 34, sliding column; 35, sliding sleeve; 36, hydraulic cylinder; 37, stripping plate; 38, sealing frame ring; 39, heating plate; 310, heating machine; 311, vacuum fan; 312, vacuum pipe; 313, air supply fan; 314, air supply pipe; 315, upper through hole. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0037] Example 1: Please refer to Figure 1-4 The present invention provides a technical solution: a sponge foaming machine for automobile foam production, comprising a base plate 1, a raw material mixing component 2 and a mold component 3, the mold component 3 is fixedly connected to the top surface of the base plate 1, the mold component 3 comprises a lower mold 31, an upper mold 32 and a top plate 33, the raw material mixing component 2 comprises a stirring tank 21, the outer side of the stirring tank 21 is fixedly sleeved with a fixed plate 210, and the fixed plate 210 is fixedly connected to one end of the top plate 33;

[0038] A stirring chamber 22 is provided inside the stirring tank 21, a blade stirring assembly 23 is provided inside the stirring chamber 22, a gas stirring assembly 24 is provided inside the bottom surface of the stirring tank 21, and a material discharge assembly 25 is provided on one side of the top surface of the stirring tank 21;

[0039] The gas stirring assembly 24 includes a plurality of coils 241 and an air pump 242. The plurality of coils 241 are fixedly embedded in the bottom surface of the stirring tank 21. The plurality of connecting pipes 243 are connected between the plurality of coils 241. The top surface of the coils 241 is connected to a plurality of jet elbows 244. The plurality of jet elbows 244 are all connected to the stirring chamber 22. The air pump 242 is fixedly connected to the side wall of the stirring tank 21. The air pump 242 is connected to the coils 241 located on the outside. The air pump 242 is connected to one end of the air inlet pipe 245. The other end of the air inlet pipe 245 is connected to the air supply tank 246. The air supply tank 246 is placed on the top surface of the base plate 1. The stirring chamber 22 is inflated from the bottom through the gas stirring assembly 24. The raw materials at the bottom are stirred by gas to avoid sedimentation at the bottom of the raw materials, thereby ensuring the uniformity of stirring and improving the foaming quality.

[0040] The material discharge component 25 includes an arc plate 251 fixedly connected to one side of the top surface of the stirring tank 21, and a plurality of raw material boxes 252 are fixedly and vertically embedded on the arc plate 251. The bottom ends of the plurality of raw material boxes 252 are respectively connected to a plurality of bottom pipes 253. The side wall of the stirring tank 21 is fixedly connected to an arc pipe 254 below the arc plate 251. The plurality of bottom pipes 253 are all connected to the arc pipe 254. The arc pipe 254 is connected to a plurality of liquid supply pipes 255 near the side of the stirring tank 21. The ends of the plurality of liquid supply pipes 255 pass through the side wall of the stirring tank 21 and are connected to the stirring chamber 22. A metering pump 256 is fixedly connected to the bottom pipe 253. The material discharge component 25 uses a plurality of raw material boxes 252, and the ingredients can be separated and placed. The ingredients are metered and discharged by the metering pump 256. There is no need for manual batching, and the accuracy of the discharge amount is improved. Moreover, the various raw materials can be discharged at the same time, which is convenient for mixing and stirring, and also reduces manual input.

[0041] Example 2: Please refer to Figure 1-2 5-9 is the second embodiment of the present invention, which is based on the previous embodiment. The blade stirring assembly 23 includes a main shaft 231, which is vertically rotatably connected to the center of the stirring chamber 22. The outer wall of the main shaft 231 is evenly fixed with multiple U-shaped frames 232, and multiple sub-shafts 233 are vertically rotatably connected to the multiple U-shaped frames 232. The multiple sub-shafts 233 are located on the inner side of the U-shaped frames 232 and are fixed with multiple stirring blades 234.

[0042] A plurality of annular grooves 27 are provided at the same vertical position corresponding to the plurality of sub-shafts 233 on the top surface of the stirring chamber 22, and a plurality of pinion gears 236 are fixedly connected to the top ends of the plurality of sub-shafts 233 respectively. The pinion gears 236 are located in the annular grooves 27, and the inner side walls of the annular grooves 27 are fixedly connected to the inner gear ring 28, which is meshed and connected to the pinion gears 236. A stirring motor 29 is fixedly connected to the center position of the top surface of the stirring tank 21, and the rotating shaft end of the stirring motor 29 is fixedly connected to the top end of the main shaft 231. A scraper 235 is fixedly connected to the end of the U-shaped frame 232 away from the main shaft 231, and the scraper 235 contacts the inner side wall of the stirring chamber 22. When the main shaft 231 drives the U-shaped frame 232 to rotate, the stirring blade 234 will also rotate under the action of the inner gear ring 28, so that the rotation is more diverse, thereby improving the stirring quality.

[0043] A discharge assembly 26 is provided on the bottom surface of the stirring tank 21, and the discharge assembly 26 includes four sub-liquid outlet pipes 261 and a liquid pump 262 fixedly connected to the bottom surface of the stirring tank 21. The top ends of the four sub-liquid outlet pipes 261 are fixedly connected to the bottom surface of the stirring tank 21, the top ends of the sub-liquid outlet pipes 261 are connected to the stirring chamber 22, the other ends of the sub-liquid outlet pipes 261 are fixedly connected to and connected to the liquid pump 262, and the bottom end of the liquid pump 262 is connected to the main liquid outlet pipe 263.

[0044] The bottom end of the main liquid outlet pipe 263 is rotatably connected to the rotating tube 264, and the rotating tube 264 is connected to the main liquid outlet pipe 263. The bottom end of the main liquid outlet pipe 263 is horizontally fixedly connected to the adjusting nozzle 265, and the adjusting nozzle 265 is located above the lower mold 31. The outer side of the bottom end of the main liquid outlet pipe 263 is fixedly connected to a small bracket 266, and a small reduction servo motor 267 is fixedly connected to the small bracket 266. The rotating shaft end of the small reduction servo motor 267 is fixedly connected to a driving gear 268. The outer side of the rotating tube 264 is fixedly sleeved with a driven gear 269, and the driving gear 268 is meshedly connected to the driven gear 269.

[0045] The lower mold 31 is fixedly connected to the base plate 1. The top surface of the base plate 1 is located at the four corners of the lower mold 31 and four sliding columns 34 are vertically fixed to the outside. The upper mold 32 is located directly above the lower mold 31. Four sliding sleeves 35 are horizontally fixed to the four corners of the upper mold 32. The four sliding sleeves 35 are slidably sleeved on the four sliding columns 34 respectively. The top plate 33 is fixedly connected to the top of the four sliding columns 34. The hydraulic cylinder 36 is fixedly embedded on the top plate 33. The output shaft of the hydraulic cylinder 36 is fixedly connected to the center position of the top surface of the upper mold 32.

[0046] The lower mold 31 is vertically slidably connected to the stripping plate 37, and the sealing frame ring 38 is fixedly connected to the circumference of the stripping plate 37. The inner cavity 11 is provided inside the base plate 1 and is located directly below the lower mold 31. The inner cavity 11 is vertically slidably connected to the slide plate 12. Four top rods 15 are respectively fixedly connected to the top surfaces of the four corners of the slide plate 12. The base plate 1 is located at the top surface of the inner cavity 11 and has four lower through holes 110 at the same vertical position corresponding to the four top rods 15. The bottom surface of the lower mold 31 has four upper through holes 315 at the same vertical position corresponding to the four lower through holes 110. The top rods 15 pass through the lower through holes 110 and the upper through holes 315 and are fixedly connected to the bottom surface of the stripping plate 37. The interior of the seat plate 1 is located below the center of the inner cavity 11 and is fixedly connected to the main motor 16 and the reduction gear box 17. The center of the inner cavity 11 is vertically rotated to connect the screw rod 18. The center of the slide plate 12 is fixedly connected to the threaded sleeve 19. The screw rod 18 is threadedly connected to the threaded sleeve 19. The output shaft of the main motor 16 is fixedly connected to the input shaft of the reduction gear box 17. The output shaft of the reduction gear box 17 is fixedly connected to the bottom end of the screw rod 18. A plurality of sliding rods 14 are vertically fixedly connected in the inner cavity 11. A plurality of sliding holes 13 are provided on the slide plate 12. The sliding rods 14 are slidably sleeved on the inner side of the sliding holes 13. The foam is demolded by lifting up the demolding plate 37, and the demolding is more convenient and easy.

[0047] The outer wall of the lower mold 31 is fixedly connected to a heater 310, and the inner side wall of the lower mold 31 is fixedly connected to a heating plate 39 to maintain the temperature inside the mold. The side wall of the upper mold 32 is fixedly connected to an air exhauster 311, and the side of the air exhauster 311 close to the upper mold 32 is connected to an air exhaust pipe 312, and the air exhaust pipe 312 is connected to the inner side of the upper mold 32. The side of the upper mold 32 away from the air exhauster 311 is fixedly connected to an air supply fan 313, and the side of the air supply fan 313 close to the upper mold 32 is connected to an air supply pipe 314, and the air supply pipe 314 is connected to the inner side of the upper mold 32.

[0048] Embodiment 3: The third embodiment of the present invention provides a foaming method of a sponge foaming machine for producing automotive foam, comprising the following steps:

[0049] Step 1: preparing materials: preparing toluene diisocyanate, diphenylmethane diisocyanate, polyether polyol, polyurethane resin, amine-free volatile catalyst, silicone oil, polyurethane catalyst, foam stabilizer, foam opener and water as raw materials, and adding each ingredient into the raw material box 252 in the blanking component 25;

[0050] Step 2: Feeding: Start multiple metering pumps 256 to feed each raw material into the stirring chamber 22 according to the weight ratio of each ingredient. The weight ratio of the raw materials is: 30 parts of toluene diisocyanate, 8.4 parts of diphenylmethane diisocyanate, 30 parts of polyether polyol, 25 parts of polyurethane resin, 0.1 parts of amine-free volatile catalyst, 0.5 parts of silicone oil, 0.5 parts of polyurethane catalyst, 1 part of foaming agent, 1 part of foaming agent, and 3.5 parts of water.

[0051] Step 3: Stirring and mixing: Start the stirring motor 29 to drive the blade stirring assembly 23 to stir the raw materials, and at the same time start the air pump 242 in the gas stirring assembly 24 to spray the gas from the bottom of the stirring chamber 22 upward to stir the bottom of the raw materials. The stirring time is 20 minutes. At the same time, use a spray gun to spray a release agent on the inner side wall of the lower mold 31 and the inner side wall of the upper mold 32;

[0052] Step 4: Injection: After the stirring is completed, the liquid pump 262 in the discharge assembly 26 is started to drive the raw material to be injected into the lower mold 31. After the injection is completed, the small reduction servo motor 267 is started to rotate the adjustment nozzle 265 out of the lower mold 31;

[0053] Step 5 Foaming: After the injection is completed, the hydraulic cylinder 36 is started to close the upper mold 32 and the lower mold 31, and the heating machine 310 is started to keep the temperature in the mold at 48-55°C through the heating plate 39, and the exhaust fan 311 is started to exhaust air to make the mold vacuum, and then the air supply fan 313 is started to slowly inject air into the mold for foaming, and the foaming time is 8-10 minutes;

[0054] Step 6 Demolding: After the foaming is completed, the upper mold 32 is driven upward by the hydraulic cylinder 36, and the main motor 16 is started to drive the stripping plate 37 upward by the screw rod 18 to push the foam out, and the foaming process is now completely completed.

[0055] Example 4: Please refer to Figure 1-9, which is the fourth embodiment of the present invention. This embodiment is based on the above three embodiments. The use process of the present invention follows the following steps: Step 1: Prepare materials: prepare toluene diisocyanate, diphenylmethane diisocyanate, polyether polyol, polyurethane resin, amine-free volatile catalyst, silicone oil, polyurethane catalyst, foam stabilizer, foam opener and water as raw materials, and add each ingredient into the raw material box 252 in the feeding component 25; Step 2: Feed: start multiple metering pumps 256 to feed each raw material into the stirring chamber 22 according to the weight proportion of each ingredient. The weight proportion of the raw materials is: 30 parts of toluene diisocyanate, 8.4 parts of diphenylmethane diisocyanate, and polyether polyol. 30 parts of alcohol, 25 parts of polyurethane resin, 0.1 parts of amine-free volatile catalyst, 0.5 parts of silicone oil, 0.5 parts of polyurethane catalyst, 1 part of foaming agent, 1 part of foaming agent and 3.5 parts of water; Step 3: stirring and mixing: start the stirring motor 29 to drive the blade stirring component 23 to work to stir the raw materials, and at the same time start the air pump 242 in the gas stirring component 24 to spray the gas from the bottom of the stirring chamber 22 upward to stir the bottom of the raw materials. The stirring time is 20 minutes. At the same time, use a spray gun to spray the release agent on the inner side wall of the lower mold 31 and the inner side wall of the upper mold 32; Step 4: injection: after the stirring is completed, start the liquid pump 262 in the discharge component 26 to drive the raw materials to be injected into the lower mold 31. After the injection is completed, the small reduction servo motor 267 is started to rotate the regulating nozzle 265 out of the lower mold 31; Step 5 Foaming: After the injection is completed, the hydraulic cylinder 36 is started to close the upper mold 32 and the lower mold 31, and the heating machine 310 is started to keep the temperature in the mold at 48-55°C through the heating plate 39, and the vacuum pump 311 is started to exhaust air to make the mold vacuum, and then the air supply fan 313 is started to slowly inject air into the mold for foaming, and the foaming time is 8-10 minutes; Step 6 Demolding: After the foaming is completed, the hydraulic cylinder 36 is used to drive the upper mold 32 to move up, and the main motor 16 is started to use the screw rod 18 to drive the stripping plate 37 to move up to push out the foam. At this point, the foaming process is completely completed. The present invention sets a feeding component 25 in the raw material mixing component. A plurality of raw material boxes 252 are used in the feeding component 25, and the ingredients can be separated and placed. The ingredients are metered and fed through a metering pump 256. There is no need for manual batching, and the accuracy of the feeding amount is improved. Moreover, various raw materials can be fed at the same time, which is convenient for mixing and stirring, and also reduces manual input. At the same time, in addition to using blade stirring, the present invention also adds a gas stirring component 24 at the bottom. The gas stirring component 24 is used to inflate the stirring chamber 22 from the bottom, and the raw materials at the bottom are stirred by gas to avoid sedimentation at the bottom of the raw materials, thereby ensuring the uniformity of stirring and improving the foaming quality.

[0056] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sponge foaming machine for automobile foam production, comprising a base plate (1), a raw material mixing component (2) and a mold component (3), characterized in that: The mold component (3) is fixedly connected to the top surface of the base plate (1), the mold component (3) comprises a lower mold (31), an upper mold (32) and a top plate (33), the raw material mixing component (2) comprises a stirring tank (21), the outer side of the stirring tank (21) is fixedly sleeved with a fixing plate (210), and the fixing plate (210) is fixedly connected to one end of the top plate (33); A stirring chamber (22) is provided inside the stirring tank (21), a blade stirring assembly (23) is provided inside the stirring chamber (22), a gas stirring assembly (24) is provided inside the bottom surface of the stirring tank (21), and a material discharge assembly (25) is provided on one side of the top surface of the stirring tank (21); The gas stirring assembly (24) comprises a plurality of coils (241) and an air pump (242); the plurality of coils (241) are fixedly embedded in the bottom surface of the stirring tank (21); the plurality of coils (241) are connected to a plurality of connecting pipes (243); the top surface of the coils (241) is connected to a plurality of jet bends (244); the plurality of jet bends (244) are all connected to the stirring chamber (22); the air pump (242) is fixedly connected to the side wall of the stirring tank (21); the air pump (242) is connected to the coils (241) located on the outside; the air pump (242) is connected to one end of an air intake pipe (245); the other end of the air intake pipe (245) is connected to an air supply tank (246); the air supply tank (246) is placed on the top surface of the base plate (1); The material discharge assembly (25) comprises an arc plate (251) fixedly connected to one side of the top surface of the stirring tank (21); a plurality of raw material boxes (252) are fixedly and vertically embedded on the arc plate (251); the bottom ends of the plurality of raw material boxes (252) are respectively connected to a plurality of bottom pipes (253); an arc-shaped pipe (254) is fixedly connected to the side wall of the stirring tank (21) below the arc plate (251); the plurality of bottom pipes (253) are all connected to the arc-shaped pipe (254); the arc-shaped pipe (254) is connected to a plurality of liquid supply pipes (255) at a side close to the stirring tank (21); the ends of the plurality of liquid supply pipes (255) pass through the side wall of the stirring tank (21) and are connected to the stirring chamber (22); and a metering pump (256) is fixedly connected to the bottom pipe (253).

2. The sponge foaming machine for automobile foam production according to claim 1, characterized in that: The blade stirring assembly (23) comprises a main shaft (231), the main shaft (231) being vertically rotatably connected to the center of the stirring chamber (22), the outer wall of the main shaft (231) being evenly fixedly connected to a plurality of U-shaped frames (232), the plurality of sub-shafts (233) being vertically rotatably connected to the plurality of U-shaped frames (232), and the plurality of sub-shafts (233) being located inside the U-shaped frames (232) and fixedly connected to a plurality of stirring blades (234).

3. The sponge foaming machine for automobile foam production according to claim 2, characterized in that: A plurality of annular grooves (27) are provided at the same vertical position on the top surface of the stirring chamber (22) corresponding to the plurality of sub-shafts (233); the top ends of the plurality of sub-shafts (233) are respectively fixedly connected to a plurality of pinion gears (236); the pinion gears (236) are located in the annular grooves (27); the inner side walls of the annular grooves (27) are fixedly connected to an inner gear ring (28); the inner gear ring (28) is meshingly connected to the pinion gears (236); a stirring motor (29) is fixedly connected to the center of the top surface of the stirring tank (21); the rotating shaft end of the stirring motor (29) is fixedly connected to the top end of the main shaft (231); and a scraper (235) is fixedly connected to one end of the U-shaped frame (232) away from the main shaft (231); the scraper (235) contacts the inner side wall of the stirring chamber (22).

4. The sponge foaming machine for automobile foam production according to claim 3, characterized in that: The bottom surface of the stirring tank (21) is provided with a discharge assembly (26), the discharge assembly (26) comprising four sub-liquid discharge pipes (261) and a liquid pump (262) fixedly connected to the bottom surface of the stirring tank (21), the top ends of the four sub-liquid discharge pipes (261) being fixedly connected to the bottom surface of the stirring tank (21), the top ends of the sub-liquid discharge pipes (261) being connected to the stirring chamber (22), the other ends of the sub-liquid discharge pipes (261) being fixedly connected to and connected to the liquid pump (262), and the bottom end of the liquid pump (262) being connected to the main liquid discharge pipe (263).

5. The sponge foaming machine for automobile foam production according to claim 4, characterized in that: The bottom end of the main liquid outlet pipe (263) is rotatably connected to a rotating pipe (264), the rotating pipe (264) is in communication with the main liquid outlet pipe (263), the bottom end of the main liquid outlet pipe (263) is horizontally fixedly connected to an adjusting nozzle (265), the adjusting nozzle (265) is located above the lower mold (31), the outer side of the bottom end of the main liquid outlet pipe (263) is fixedly connected to a small bracket (266), the small bracket (266) is fixedly connected to a small reduction servo motor (267), the rotating shaft end of the small reduction servo motor (267) is fixedly connected to a driving gear (268), the outer side of the rotating pipe (264) is fixedly sleeved with a driven gear (269), and the driving gear (268) is meshingly connected to the driven gear (269).

6. The sponge foaming machine for automobile foam production according to claim 5, characterized in that: The lower die (31) is fixedly connected to the base plate (1); the top surface of the base plate (1) is located at the outer sides of the four corners of the lower die (31) and is respectively vertically fixedly connected to four sliding columns (34); the upper die (32) is located directly above the lower die (31); the four corners of the upper die (32) are horizontally fixedly connected to four sliding sleeves (35); the four sliding sleeves (35) are respectively slidably connected to the four sliding columns (34); the top plate (33) is fixedly connected to the top ends of the four sliding columns (34); a hydraulic cylinder (36) is fixedly connected to the top plate (33); the output shaft of the hydraulic cylinder (36) is fixedly connected to the center position of the top surface of the upper die (32).

7. The sponge foaming machine for automobile foam production according to claim 6, characterized in that: The lower mold (31) is vertically slidably connected to the stripping plate (37), and the stripping plate (37) is fixedly connected to a sealing frame ring (38) on its circumference. The base plate (1) is provided with an inner cavity (11) located directly below the lower mold (31). The inner cavity (11) is vertically slidably connected to a slide plate (12), and four top surfaces at four corners of the slide plate (12) are respectively fixedly connected to four lifting rods (15). The base plate (1) is provided with four lower through holes (110) at the same vertical position corresponding to the four lifting rods (15) on the top surface of the inner cavity (11), and four upper through holes (315) are provided at the same vertical position corresponding to the four lower through holes (110) on the bottom surface of the lower mold (31), and the lifting rods (15) pass through the lower through holes (110) and the upper through holes (315). The base plate (1) is fixedly connected to the bottom surface of the stripping plate (37); the main motor (16) and the reduction gear box (17) are fixedly connected inside the base plate (1) below the center position of the inner cavity (11); the center position of the inner cavity (11) is vertically rotatably connected to the screw rod (18); the center position of the slide plate (12) is fixedly connected to the threaded sleeve (19); the screw rod (18) is threadedly connected to the threaded sleeve (19); the output shaft of the main motor (16) is fixedly connected to the input shaft of the reduction gear box (17); the output shaft of the reduction gear box (17) is fixedly connected to the bottom end of the screw rod (18); a plurality of sliding rods (14) are vertically fixed inside the inner cavity (11); a plurality of sliding holes (13) are provided on the slide plate (12); the sliding rods (14) are slidably sleeved on the inner sides of the sliding holes (13).

8. The sponge foaming machine for automobile foam production according to claim 7, characterized in that: The outer wall of the lower mold (31) is fixedly connected to a heating machine (310), the inner side wall of the lower mold (31) is fixedly connected to a heating plate (39), the side wall of the upper mold (32) is fixedly connected to an exhaust fan (311), the exhaust fan (311) is connected to an exhaust pipe (312) on the side close to the upper mold (32), the exhaust pipe (312) is connected to the inner side of the upper mold (32), the upper mold (32) is fixedly connected to an air supply fan (313) on the side away from the exhaust fan (311), the air supply fan (313) is connected to an air supply pipe (314) on the side close to the upper mold (32), and the air supply pipe (314) is connected to the inner side of the upper mold (32).

9. The foaming method of a sponge foaming machine for automobile foam production according to claim 8, characterized in that The following steps are involved: Step 1: preparing materials: preparing toluene diisocyanate, diphenylmethane diisocyanate, polyether polyol, polyurethane resin, amine-free volatile catalyst, silicone oil, polyurethane catalyst, foam stabilizer, foam opener and water as raw materials, and adding each ingredient into the raw material box (252) in the unloading component (25); Step 2: feeding: starting multiple metering pumps (256) to feed each raw material into the stirring chamber (22) according to the weight ratio of each ingredient, wherein the weight ratio of the raw materials is: 30 parts of toluene diisocyanate, 8.4 parts of diphenylmethane diisocyanate, 30 parts of polyether polyol, 25 parts of polyurethane resin, 0.1 parts of amine-free volatile catalyst, 0.5 parts of silicone oil, 0.5 parts of polyurethane catalyst, 1 part of foam stabilizer, 1 part of foam opener and 3.5 parts of water; Step 3: stirring and mixing: start the stirring motor (29) to drive the blade stirring assembly (23) to stir the raw materials, and at the same time start the air pump (242) in the gas stirring assembly (24) to spray gas from the bottom end of the stirring chamber (22) upward to stir the bottom of the raw materials. The stirring time is 20 minutes. At the same time, a release agent is sprayed on the inner wall of the lower mold (31) and the inner wall of the upper mold (32) using a spray gun; Step 4: Injection: After the stirring is completed, the liquid pump (262) in the discharge assembly (26) is started to drive the raw materials to be injected into the lower mold (31). After the injection is completed, the small reduction servo motor (267) is started to rotate the adjustment nozzle (265) out of the lower mold (31); Step 5: Foaming: After the injection is completed, the hydraulic cylinder (36) is started to close the upper mold (32) and the lower mold (31), and the heating machine (310) is started to maintain the temperature in the mold at 48-55° C. through the heating plate (39), and the exhaust fan (311) is started to exhaust air to make the mold vacuum, and then the air supply fan (313) is started to slowly inject air into the mold for foaming, and the foaming time is 8-10 minutes; Step 6 Demolding: After the foaming is completed, the upper mold (32) is driven upward by the hydraulic cylinder (36), and the main motor (16) is started to drive the stripper plate (37) upward by the screw rod (18) to eject the foam. At this point, the foaming process is completely completed.

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