Sponge foaming machine

Abstract

The invention discloses a sponge foaming machine which comprises a foaming box, a camera is installed above the foaming box, a first temperature sensor is installed on the inner wall of the foaming box, one side of the foaming box is connected with an integrated high-pressure pump through a pipeline, and adding bottles are fixed to the two sides of the foaming box. A second temperature sensor is installed in the foaming box, a mounting box is riveted to one side of the foaming box, a push-out assembly is installed in the mounting box, a positioning assembly is arranged above the foaming box, and a stirring assembly is fixedly connected to the interior of the positioning assembly. And the obtained sponge is poor in quality.

Description

Technical Field

[0001] The invention belongs to the technical field of sponge production, and in particular relates to a sponge foaming machine. Background Art

[0002] Sponge foaming machine is a machine used to prepare porous sponge materials. It mixes foaming resin, foaming aid and adhesive resin through a specific chemical process, and then foams the porous material. In the industrial field, the foamed sponge can be used as a sound-absorbing and sound-insulating material for cars, airplanes, buildings, etc. to provide a more comfortable environment; in the production of household products, it is often used in cleaning products such as dishwashing sponges and bath balls to improve cleaning efficiency; in the medical field, it is used as wound dressings, surgical suture materials, etc. Its water absorption and permeability are helpful for the treatment and healing of wounds. It can be seen that sponge foaming machines play a vital role in the production process of sponge products.

[0003] At present, most sponge foaming machines are box-type foaming machines, which are suitable for large-scale sponge production and can achieve efficient and uniform foaming. There are certain requirements for the height of sponge foaming during the sponge processing and production process, so as to effectively control the quality of sponge foaming. However, sponge foaming is often unstable and needs to be adjusted according to actual conditions. This phenomenon has become a problem that needs to be urgently solved by people in this field. Summary of the invention

[0004] The purpose of the present invention is to provide a sponge foaming machine for existing devices to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a sponge foaming machine, comprising a foaming box, a camera is installed above the foaming box, a temperature sensor 1 is installed on the inner wall of the foaming box, a pipeline on one side of the foaming box is connected to an integrated high-pressure pump, an addition bottle is fixed on both sides of the foaming box, and a temperature sensor 2 is installed inside the foaming box; Connecting rings are welded on both sides of the foaming box, and adding bottles are installed in the connecting rings on both sides of the foaming box. A first adding pipe is connected to the lower pipeline of one of the adding bottles, and a second adding pipe is connected to the lower pipeline of the other adding bottle. The first adding pipe and the second adding pipe are both connected to the inside of the foaming box by valves; A mounting box is riveted on one side of the foaming box, a pushing assembly is installed inside the mounting box, a positioning assembly is arranged above the foaming box, and a stirring assembly is fixedly connected inside the positioning assembly.

[0006] The present invention further illustrates that connecting rings are welded on both sides of the foaming box, and the ejection assembly includes a fixing part, which is riveted on the upper inner wall of the mounting box, a cylinder 1 is riveted below the fixing part, a connecting part is provided on one side of the cylinder 1, a push rod is riveted on one side of the connecting part, a push plate is welded on one side of the push rod, and a pressure sensor 1 is installed on the side of the push plate that contacts the sponge.

[0007] The present invention further illustrates that the feeding device includes a first feeding barrel, a first feeding pipe is installed above the first feeding barrel, a second feeding barrel is arranged on one side of the first feeding barrel, a second feeding pipe is installed above the second feeding barrel, a third feeding barrel is arranged on the other side of the first feeding barrel, and a third feeding pipe is installed above the third feeding barrel.

[0008] The present invention further illustrates that the positioning assembly includes a positioning rod, the positioning rod is riveted above the foaming box, a positioning sleeve is welded on one side of the positioning rod, and a stirring assembly is arranged inside the positioning sleeve.

[0009] The present invention further illustrates that the stirring assembly includes a stirring barrel and a support rod. The stirring barrel is installed in a positioning sleeve. A discharge port is provided at the bottom of the stirring barrel. An electric control valve is installed on the discharge port. The support rod is welded to the positioning sleeve. A connecting rod is welded to the top of the support rod. An electric push rod is installed at one end of the connecting rod. A driving member is fixedly connected to the bottom of the electric push rod.

[0010] The present invention further illustrates that the driving member comprises a first positioning ring, a driving rod is passed through the center of the first positioning ring, one end of the driving rod is connected to a motor, the other end of the driving rod is sleeved with a driving gear, a second positioning ring is fixed to a connecting rod above the first positioning ring, a first stirring rod is passed through the center of the second positioning ring, one end of the first stirring rod is sleeved with a first driven gear, a third positioning ring is fixed to a connecting rod below the first positioning ring, a second stirring rod is passed through the center of the third positioning ring, and one end of the second stirring rod is sleeved with a second driven gear; The driving gear is meshed and connected with the first driven gear and the second driven gear respectively, a first stirring rod is penetrated in the center of the second stirring rod, a first stirring blade is welded on the part of the first stirring rod extending out of the second stirring rod, a micro electric push rod is installed inside the first stirring blade and connected with a telescopic stirring blade, a telescopic rod is installed inside the first stirring rod, a second pressure sensor is installed inside the telescopic rod, and a telescopic spring is welded on the top of the telescopic rod; A second stirring blade is welded to the outer side of the second stirring rod, and cylinder-driven extension parts are arranged inside the first stirring blade and the second stirring blade, and the extension parts are movably connected to the scrapers at the outer ends of the first stirring blade and the second stirring blade.

[0011] The present invention further illustrates that the foaming process of the sponge foaming machine includes: The raw materials are respectively input into the stirring component through the first feeding pipe, the second feeding pipe and the third feeding pipe from the first feeding barrel, the second feeding pipe and the third feeding pipe for sufficient stirring. The required stirring time is set so that the raw materials for sponge foaming are fully integrated. The discharge port is opened after receiving the signal of the end of the stirring time. The raw materials are put into the foaming box and heated by the heating ring at the bottom of the foaming box. At the same time, the integrated high-pressure pump is pressurized to promote the chemical reaction required for sponge foaming and ensure the distribution of the raw materials, so that the raw materials are foamed and solidified. The foaming situation inside the foaming box is reflected by the camera. After observing that the foaming situation is qualified, the operator opens the box door on one side of the foaming box and starts the ejection component to push the sponge out of the foaming box through the push plate, so as to achieve the effect of rapid demolding, thereby obtaining a foamed sponge.

[0012] The present invention further illustrates that the process control of the sponge foaming comprises the following steps: The height of the sponge foaming is set to a fixed value H, and the height h of the sponge foaming is detected by a camera. The height is specifically defined by marking the inner wall of the foaming box, and is used as a comparison reference between H and h. The height of the push plate is higher than H. When h is equal to H, and no obvious cracks are observed on the surface of the foamed sponge through the camera, it means that the foaming height of the sponge is qualified and the sponge quality is qualified. The ejection assembly can be started to drive the cylinder to move the connecting part. At the same time, the connecting part drives the push rod and the push plate to move to one side, and the foamed sponge in the foaming box is pushed out and demolded to obtain the processed sponge.

[0013] The present invention further illustrates that the process control of the sponge foaming further includes the following steps: When h is less than H, it means that the foaming height of the sponge is not enough. At the same time, the camera observes that the foaming of the sponge tends to stop. When this happens, the temperature inside the foaming box reflected by the temperature sensor can be detected. If the temperature is too low, it means that the temperature of the heating coil in the foaming box is not enough, and the temperature needs to be increased to maintain foaming. If it is found through testing that the cause is not low temperature, then test the pressure value reflected by the integrated high-pressure pump. When the pressure is too low, it will also cause the sponge to have insufficient foaming height. If the pressure is too low, the pressure of the integrated high-pressure pump needs to be increased to maintain the sponge foaming; When it is detected that the above parameters are all at normal values, it is considered that the foaming height of the sponge detected by the camera is insufficient due to the fact that the dosage of the foaming agent in the raw material is too small or the quality of the foaming agent is too poor. At this time, the electric valve on the first adding pipe is opened to add an appropriate amount of auxiliary foaming agent into the foaming box. At the same time, the electric push rod makes the first stirring blade extend downward from the discharge port into the foaming box. The raw material will quickly complete foaming after entering the foaming box. In order to prevent the sponge in the foamed and unfoamed states from being stirred after the auxiliary foaming agent is added, the sponge cannot fully promote the heat transfer and gas release between the materials due to the single stirring direction, resulting in local overheating and the reduction of sponge quality. The part that is not fully foamed will affect the overall performance of the product. At this time, it is necessary to control the first stirring blade of the stirring component to enter the foamed part for stirring, and the second stirring blade stirs the part of the raw material that has not been foamed, so as to avoid damage to the already formed sponge structure or affect the performance of the final product. The height of the foamed sponge is set to L1. When the first stirring rod descends, the telescopic rod contacts the foamed sponge. At this time, the second pressure sensor will reflect the change in pressure and reflect the signal to the operating system. When L1 is greater than the total length of the first stirring rod and the telescopic rod, when the pressure change is sensed by the second pressure sensor, the operating system starts to calculate the length of the electric push rod to push the first stirring blade into the foamed sponge part until the upper end of the first stirring blade is at the critical value of the foamed and unfoamed parts of the sponge, and continues to stir the foaming box, so that the auxiliary foaming agent and the raw material are fully integrated and foamed again, and the foaming auxiliary agent is continued to be added until the sponge foaming height meets the set value H; When L1 is less than the total length of the first stirring rod and the telescopic rod, the bottom end of the telescopic rod hits the bottom of the foaming box, causing the telescopic spring to contract under force. At this time, the pressure sensor 2 senses the pressure change and sends a signal to the operating system to control the micro electric push rod to synchronously retract the telescopic stirring blade until the upper end of the first stirring blade is at the critical value between the foamed and unfoamed parts of the sponge, and continues to stir the foaming box, so that the auxiliary foaming agent and the raw material are fully integrated and foamed again, and the sponge foaming height meets the set value H; When L1 is smaller than the telescopic rod contraction range that can be achieved by the telescopic spring, it means that the foaming quality of the sponge is too poor and is not suitable for use, and should be directly recycled and discarded.

[0014] The present invention further illustrates that the process control of the sponge foaming further includes the following steps: When h is greater than H, it means that the foaming height of the sponge is too high. At this time, the outer surface of the foaming sponge is observed by the camera. If a small opening is detected on the sponge surface, it means that the heating temperature of the foaming box is too high, and the camera will sound an alarm to remind the operator to turn off the heating coil. Check the taken out sponge. If the surface opening is small, use adhesive to treat the sponge surface without affecting the subsequent use of the sponge. If the surface opening is large, in order not to waste resources, cut the sponge, reprocess it, splice it, etc. When the camera observes the outer surface of the foaming sponge at this time, it detects large cracks on the sponge surface, indicating that the pressure in the foaming box is too high. Then the camera also sounds an alarm to remind the operator to turn off the integrated high-pressure pump and perform the same operation on the sponge. When the quality of the foamed sponge is too poor in the above situation, the sponge should be recycled; When the camera is used to observe the outer surface of the foaming sponge and there is no obvious crack, it means that the foaming height has nothing to do with the pressure and temperature, and is caused by an excessive dosage of the foaming agent. At this time, the electric valve of the second addition pipe containing the inhibitor is opened to add an appropriate amount of the inhibitor into the foaming box. At the same time, the electric push rod drives the first stirring blade to extend downward from the discharge port into the foaming box, so that the first stirring blade and the second stirring blade stir the inside of the foaming box in different directions up and down, so that the inhibitor is fully integrated into the sponge foaming raw material. The stirring operation in the foaming box is continued to make the inhibitor and the raw material fully integrated and foamed again until the sponge foaming height meets the set value H.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are: (1) By providing two additive bottles with different additives and controlling the addition, the foaming degree of the sponge during the foaming process can be effectively controlled, which largely prevents the sponge from being insufficiently or excessively foamed, and the subsequent sponge production ratio can be optimized according to the real-time situation; (2) The ejection component is provided to quickly demold the foamed sponge. The foaming quality of the sponge can be reflected according to the demolding condition of the sponge, and the subsequent foaming parameters can be optimized; (3) By providing a stirring component, the raw materials for sponge foaming in the stirring barrel can be fully stirred in different directions, effectively breaking the interfacial tension between the raw materials and the foaming agent, and promoting their full mixing, which helps to reduce local concentration differences and improve the uniformity of foaming. The outer scraper can avoid the waste caused by residual raw materials. At the same time, the raw materials in the foaming box can be stirred in layers when necessary to prevent insufficient mixing of additives and damage to the sponge structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure inside the installation box of the present invention; Figure 3 It is a structural schematic diagram of the ejection assembly of the present invention; Figure 4 It is a schematic structural diagram of the feeding device of the present invention; Figure 5 It is a structural schematic diagram of the stirring assembly of the present invention; Figure 6 It is a schematic diagram of the structure of the stirring rod of the present invention after being extended; Figure 7 It is a structural schematic diagram of the driving member of the present invention; Figure 8 It is a schematic diagram of the specific structure of the stirring blade of the present invention; Fig. 9 This is a pipeline diagram before the optimization ratio of the present invention; Fig.10 This is a pipeline diagram after the optimized ratio of the present invention; In the figure: 1. Foaming box; 2. Camera; 3. Temperature sensor 1; 4. Integrated high-pressure pump; 5. Adding bottle; 51. First adding tube; 52. Second adding tube; 6. Mounting box; 7. Pushing assembly; 71. Fixing piece; 72. Cylinder 1; 73. Connecting piece; 74. Push rod; 75. Push plate; 8. Feeding device; 81. First feeding barrel; 811. First feeding tube; 82. Second feeding barrel; 821. Second feeding tube; 83. Third feeding barrel; 831. Third feeding tube; 9. Positioning assembly; 91. Positioning rod; 92. Positioning sleeve; 10. Stirring assembly; 101. Stirring barrel; 1011. Discharging port; 102. Support rod; 103. Connecting rod; 104. Electric push rod; 105. Driving member; 1051. First positioning ring; 1052. Driving rod; 1053. Driving gear; 1054. Second positioning ring; 1055. First driven gear; 1056. Third positioning ring; 1057. Second driven gear; 106. First stirring rod; 1061. Telescopic rod; 1062. Telescopic spring; 107. First stirring blade; 1071. Telescopic stirring blade; 108. Second stirring rod; 109. Second stirring blade. DETAILED DESCRIPTION

[0017] The following is a further non-limiting detailed description of the technical solution of the present invention in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-8 The present invention provides a technical solution: a sponge foaming machine, comprising a foaming box 1, a camera 2 is installed above the foaming box 1, a temperature sensor 3 is installed on the inner wall of the foaming box 1, the temperature sensor 3 is used to monitor the temperature of the foaming sponge in real time, a pipeline on one side of the foaming box 1 is connected to an integrated high-pressure pump 4, the integrated high-pressure pump 4 pressurizes the sponge foaming raw material in the foaming box 1 and monitors the pressure at the same time, an addition bottle 5 is fixed on both sides of the foaming box 1, and a temperature sensor 2 is installed inside the foaming box 1; A mounting box 6 is riveted to one side of the foaming box 1, an ejection assembly 7 is installed inside the mounting box 6, a feeding device 8 is arranged above the mounting box 6, a positioning assembly 9 is arranged above the foaming box 1, and a stirring assembly 10 is fixedly connected inside the positioning assembly 9.

[0019] Connecting rings are welded on both sides of the foaming box 1. Adding bottles 5 are installed in the connecting rings on both sides of the foaming box 1. A first adding pipe 51 is connected to the lower pipeline of one of the adding bottles 5, and a second adding pipe 52 is connected to the lower pipeline of the other adding bottle 5. The first adding pipe 51 and the second adding pipe 52 are both connected to the inside of the foaming box 1 by valves. The first adding pipe 51 is used to add auxiliary foaming agent, and the second adding pipe 52 is used to add inhibitor. The ejection assembly 7 includes a fixing member 71, which is riveted on the upper inner wall of the installation box 6, and a cylinder 72 is riveted below the fixing member 71. A connecting member 73 is provided on one side of the cylinder 72, and a push rod 74 is riveted on one side of the connecting member 73. A push plate 75 is welded on one side of the push rod 74, and a pressure sensor 1 is installed on the side of the push plate 75 that contacts the sponge. When the sponge foaming is completed, the box door on one side of the foaming box 1 is opened, and the ejection assembly 7 is started, so that the cylinder 72 drives the connecting member 73 to be pushed out to one side, so that the push rod 74 will drive the push plate 75 to push the sponge out of the foaming box 1, so as to realize the demoulding of the sponge; The feeding device 8 includes a first feeding barrel 81, a first feeding pipe 811 is installed above the first feeding barrel 81, a second feeding barrel 82 is arranged on one side of the first feeding barrel 81, a second feeding pipe 821 is installed above the second feeding barrel 82, a third feeding barrel 83 is arranged on the other side of the first feeding barrel 81, a third feeding pipe 831 is installed above the third feeding barrel 83, the first feeding barrel 81 puts sponge foaming raw materials into the stirring assembly 10, the second feeding barrel 82 puts water necessary for sponge foaming, and then puts required additives into the third feeding barrel 83, and the first feeding pipe 811, the second feeding pipe 821 and the third feeding pipe 831 are arranged so that the additives are added slightly after other main raw materials to ensure the stability and controllability of the foaming process; The positioning assembly 9 includes a positioning rod 91, which is riveted on the top of the foaming box 1, and a positioning sleeve 92 is welded on one side of the positioning rod 91, and a stirring assembly 10 is installed inside the positioning sleeve 92; The stirring assembly 10 includes a stirring barrel 101 and a support rod 102. The stirring barrel 101 is installed in a positioning sleeve 92. A discharge port 1011 is provided at the bottom of the stirring barrel 101. An electric control valve is installed on the discharge port 1011. The support rod 102 is welded to the positioning sleeve 92. A connecting rod 103 is welded to the top of the support rod 102. An electric push rod 104 is installed at one end of the connecting rod 103. A driving member 105 is fixedly connected to the lower part of the electric push rod 104. like Figure 7 The driving member 105 includes a first positioning ring 1051, a driving rod 1052 is passed through the center of the first positioning ring 1051, one end of the driving rod 1052 is connected to a motor, and the other end of the driving rod 1052 is sleeved with a driving gear 1053, a second positioning ring 1054 is fixed to the upper connecting rod of the first positioning ring 1051, a first stirring rod 106 is passed through the center of the second positioning ring 1054, and a first driven gear 1055 is sleeved on one end of the first stirring rod 106, a third positioning ring 1056 is fixed to the lower connecting rod of the first positioning ring 1051, a second stirring rod 108 is passed through the center of the third positioning ring 1056, and a second driven gear 1057 is sleeved on one end of the second stirring rod 108; The driving gear 1053 is meshed and connected with the first driven gear 1055 and the second driven gear 1057 respectively. The first stirring rod 106 is penetrated in the center of the second stirring rod 108. The first stirring blade 107 is welded on the part of the first stirring rod 106 extending out of the second stirring rod 108. A micro electric push rod connected to a telescopic stirring blade 1071 is installed inside the first stirring blade 107. A telescopic rod 1061 is installed inside the first stirring rod 106. A pressure sensor 2 is installed inside the telescopic rod 1061 for sensing and transmitting a pressure signal. A telescopic spring 1062 is welded on the top of the telescopic rod 1061. The second stirring blade 109 is welded to the outer side of the second stirring rod 108, and the first stirring blade 107 and the second stirring blade 109 are both provided with an extension part driven by a cylinder, and the extension part is movably connected with the scraper at the outer end of the first stirring blade 107 and the second stirring blade 109, and the motor drives the driving gear 1053 to rotate through the driving member 105, and the driving gear 1053 makes the first driven gear 1055 and the second driven gear 1057 rotate in the opposite direction, so that the first stirring rod 106 and the second stirring rod 108 drive the first stirring blade 107 and the second stirring blade 109 to rotate in the opposite direction respectively, so as to achieve the stirring effect in different directions in the upper and lower parts of the stirring barrel 101, and the interfacial tension between the raw material and the foaming agent can be more effectively broken by stirring in different directions in the upper and lower parts of the barrel, so as to promote their full mixing. This helps to reduce the local concentration difference, improve the uniformity of foaming, and at the same time helps to evenly distribute the bubbles in the sponge foaming material.

[0020] If the foaming height is insufficient or too high during the foaming process, it is necessary to add an auxiliary foaming agent or inhibitor to neutralize the sponge raw material. The foaming agent or inhibitor is injected into the foaming box 1 from the addition bottle 5. At the same time, the discharge port 1011 is in an open state. The electric push rod 104 controls the first stirring blade 107 to enter the foaming box 1 for stirring, and extends the outer part of the first stirring blade 107 to directly stir and mix the raw material with the additive.

[0021] Among them, camera 2, temperature sensor 1 3, temperature sensor 2, integrated high-pressure pump 4, heating coil, electric valve, cylinder 1 72, pressure sensor 1, electric push rod 104, micro electric push rod, pressure sensor 2, cylinder and electric control valve are all connected to the operating system signal.

[0022] Embodiment 1. In general, the raw materials are fed from the first feed barrel 81, the second feed barrel 82, and the third feed barrel 83 into the stirring assembly 10 through the first feed pipe 811, the second feed pipe 821, and the third feed pipe 831 respectively for full stirring. The required stirring time is set, and the raw materials in the stirring barrel 101 are stirred in different directions up and down, so as to effectively break the interfacial tension between the raw materials and the foaming agent, promote their full mixing, help reduce the local concentration difference, improve the uniformity of foaming, and thus make the raw materials for sponge foaming fully integrated, and the discharge port 1011 is used for the mixing of the raw materials and the foaming agent. The electric control valve at the position is opened after receiving the signal that the stirring time is over, and the raw materials are put into the foaming box 1, and are heated by the heating ring at the bottom of the foaming box 1. At the same time, the integrated high-pressure pump 4 is pressurized to promote the chemical reaction required for the foaming of the sponge and ensure the distribution of the raw materials, so that the raw materials are foamed and solidified. The foaming situation inside the foaming box 1 is reflected by the camera 2. After observing that the foaming situation is qualified, the operator can open the box door on one side of the foaming box 1 after the foaming is completed, and start the ejection component 7 to push the sponge out of the foaming box 1 through the push plate 75, so as to achieve the effect of rapid demoulding, thereby obtaining a foamed sponge.

[0023] Embodiment 2: During the sponge foaming process, the foaming height of the sponge will be affected by the temperature, pressure and foaming raw material ratio set by the foaming box 1. Since the foaming box 1 adopts an open structure of a box-type foaming machine, the sponge will be in direct contact with the outside world during the foaming process. Therefore, during the foaming process, the setting parameters such as temperature and pressure will be affected by the external environment. The temperature of the external environment will affect the temperature of the sponge foaming, and the pressure of the external environment will also affect the pressure of the sponge foaming. Specifically, the height of the sponge foaming is set to a fixed value H, and the height h of the sponge foaming is detected by the camera 2. The height is specifically defined by marking on the inner wall of the foaming box 1, and is used as a comparison reference between H and h, wherein the height of the push plate 75 is higher than H; When h is equal to H, and no obvious cracks are observed on the surface of the foamed sponge through the camera 2, it means that the foaming height of the sponge is qualified and the sponge quality is qualified. The ejection component 7 can be started to drive the cylinder 72 to drive the connecting member 73 to move. At the same time, the connecting member 73 drives the push rod 74 and the push plate 75 to move to one side, and the foamed sponge in the foaming box 1 is pushed out and demolded to obtain the processed sponge.

[0024] When h is less than H, it means that the foaming height of the sponge is not enough. At the same time, the camera 2 observes that the foaming of the sponge tends to stop. When this happens, the temperature inside the foaming box 1 reflected by the temperature sensor 3 can be detected. If the temperature is too low, it means that the temperature of the heating coil in the foaming box 1 is not enough, and the temperature needs to be increased to maintain the foaming. When it is found through detection that the cause is not low temperature, the pressure value reflected by the integrated high-pressure pump 4 is detected. When the pressure is too low, it will also cause the sponge to have insufficient foaming height. If the pressure is too low, the pressure of the integrated high-pressure pump 4 needs to be increased to maintain the sponge foaming; When it is detected that the above parameters are all at normal values, it is considered that the foaming height of the sponge detected by the camera 2 is insufficient due to the fact that the dosage of the foaming agent in the raw material is too small or the quality of the foaming agent is too poor. At this time, the electric valve on the first adding pipe 51 is opened to add an appropriate amount of auxiliary foaming agent into the foaming box 1. At the same time, the electric push rod 104 makes the first stirring blade 107 extend downward from the discharge port 1011 into the foaming box 1. The raw material will quickly complete foaming after entering the foaming box 1. In order to prevent the sponge in the foamed and unfoamed states from being stirred after the auxiliary foaming agent is added, the sponge in the foamed and unfoamed states cannot fully promote the heat transfer and gas release between the materials due to the single stirring direction, resulting in local overheating and the reduction of sponge quality. The part that is not fully foamed will affect the overall performance of the product. At this time, it is necessary to control the first stirring blade 107 of the stirring component 10 to enter the foamed part for stirring, and the second stirring blade 109 stirs the unfoamed raw material part to avoid damaging the already formed sponge structure or affecting the performance of the final product. The height of the foamed sponge is set to L1. When the first stirring rod 106 descends, the telescopic rod 1061 contacts the foamed sponge. At this time, the pressure sensor 2 will reflect the change in pressure and reflect the signal to the operating system. When L1 is greater than the total length of the first stirring rod 106 and the telescopic rod 1061, when the pressure change is sensed by the pressure sensor 2, the operating system starts to calculate the length of the electric push rod 104 pushing the first stirring blade 107 into the foamed sponge part until the upper end of the first stirring blade 107 is at the critical value of the foamed and unfoamed parts of the sponge, and continues to stir the foaming box 1, so that the auxiliary foaming agent and the raw material are fully integrated and foamed again, and the foaming auxiliary agent is continued to be added until the sponge foaming height meets the set value H; When L1 is less than the total length of the first stirring rod 106 and the telescopic rod 1061, the bottom end of the telescopic rod 1061 presses against the bottom of the foaming box 1, causing the telescopic spring 1062 to contract under force. At this time, the pressure sensor 2 senses the pressure change and sends a signal to the operating system to control the micro electric push rod to synchronously retract the telescopic stirring blade 1071 until the upper end of the first stirring blade 107 is at the critical value between the foamed and unfoamed parts of the sponge, and continues to stir the foaming box 1, so that the auxiliary foaming agent and the raw material are fully integrated and foamed again, and the sponge foaming height meets the set value H; When L1 is smaller than the contraction range of the telescopic rod 1061 that can be achieved by the telescopic spring 1062, it indicates that the foaming quality of the sponge is too poor and is not suitable for use, and should be directly recycled and discarded.

[0025] When h is greater than H, it means that the foaming height of the sponge is too high. At this time, the outer surface of the foaming sponge is observed by the camera 2. If a small opening is detected on the sponge surface, it indicates that the heating temperature of the foaming box 1 is too high, and the camera 2 will sound an alarm to remind the operator to turn off the heating coil. Check the taken out sponge. If the surface opening is small, use adhesive to treat the sponge surface without affecting the subsequent use of the sponge. If the surface opening is large, in order not to waste resources, cut the sponge, reprocess it, splice it, etc. If the outer surface of the foaming sponge is observed by the camera 2 at this time and large cracks are detected on the sponge surface, indicating that the pressure in the foaming box 1 is too high, the camera 2 will also sound an alarm to remind the operator to turn off the integrated high-pressure pump 4 and perform the same operation as above on the sponge; When the quality of the foamed sponge is too poor in the above situation, the sponge should be recycled; At this time, there is no obvious crack on the outer surface of the foaming sponge observed through the camera 2, which means that the foaming height has nothing to do with the pressure and temperature, and is caused by excessive dosage of the foaming agent. At this time, the electric valve of the second addition pipe 52 containing the inhibitor is opened to add an appropriate amount of inhibitor to the foaming box 1. At the same time, the electric push rod 104 drives the first stirring blade 107 to extend downward from the discharge port 1011 to the foaming box 1, so that the first stirring blade 107 and the second stirring blade 109 stir the inside of the foaming box 1 in different directions up and down, so that the inhibitor is fully integrated into the sponge foaming raw material, and the stirring operation in the foaming box 1 is continued to make the inhibitor and the raw material fully merge and foam again until the sponge foaming height meets the set value H.

[0026] In the third embodiment, the dosage of the foaming agent needs to be calculated and adjusted in advance to change the raw material, which may result in waste due to inaccurate dosage. However, by adjusting the dosage of the inhibitor or the foaming auxiliary agent in real time according to the foaming situation, the cost can be controlled more accurately. Therefore, based on the second embodiment, the ratio of the sponge foaming raw materials can be optimized, such as Figure 9-10 At this time, the first adding pipe 51 and the second adding pipe 52 are connected to the stirring barrel 101, so that the additives can be added during the stirring process or the foaming process; Specifically, when h is less than H, and this is caused by too little or poor quality of the foaming agent, then on the basis of the raw materials originally added to the mixing barrel 101, the first adding pipe 51 is opened to add the auxiliary foaming agent into the mixing barrel 101, so that the foaming effect of the raw materials is increased, so that the sponge foaming height reaches the set value H; When h is greater than H and this is caused by excessive dosage of foaming agent, at this time, based on the raw materials originally put into the mixing barrel 101, the second addition pipe 52 is opened to put the inhibitor into the mixing barrel 101, so that the foaming effect of the raw materials is suppressed, so that the sponge foaming height reaches the set value H.

[0027] Embodiment 4: In the above situation, the quality of the sponge foaming is judged only by the height of the sponge foaming. The height of the sponge foaming directly affects the stability of its molding. If the foaming height is not enough, the sponge may not be completely filled in the foaming box 1, which may cause damage or deformation during the demolding process. On the contrary, a moderate and uniform foaming height helps to keep the shape of the sponge stable and make the demolding process smoother. Based on the third embodiment, after the sponge foaming raw materials are re-proportioned, the raw materials enter the mixing barrel 101 for stirring, and after being fully mixed, they are poured into the foaming box 1 for heating and pressurizing to realize the foaming of the sponge. After a period of time, the height of the sponge foaming reaches H and the foaming is completed, then the demoulding operation begins, and the ejection component 7 is used for demoulding, and the cylinder 1 72 is driven to drive the connecting member 73 to move, and the connecting member 73 drives the push rod 74 and the push plate 75 to move to one side, and the push plate 75 pushes the sponge out of the foaming box 1. When the sponge is pushed out, the outer surface of the sponge pushed part and the inner wall of the foaming box 1 are observed to see whether there are more pores on the sponge surface and whether there are more residues on the inner wall of the foaming box 1; When there are many foam holes and there are many residues on the inner wall of the foaming box 1, it is necessary to observe the pressure value reflected by the pressure sensor 1 on the push plate 75, and compare the actual pressure with the pressure range required by the process. Insufficient or excessive pressure may lead to incomplete demoulding or damage to the product. The demoulding pressure can be reduced or increased by controlling the cylinder 1 72 to slow down or speed up the pushing speed of the push plate 75, so as to achieve the effect of controlling the demoulding pressure within the required pressure range; At the same time, the temperature of the inner wall of the foaming box 1 is detected by the second temperature sensor to determine whether the sponge is rapidly cooled and solidified on the inner surface of the foaming box 1 due to the low temperature inside the foaming box 1, forming a strong adhesion with the inner surface of the foaming box 1, making demoulding difficult. If the temperature reflected by the second temperature sensor is lower than the normal value, the heating coil needs to be started again to heat the inside of the foaming box 1 to promote demoulding of the sponge; It should be noted that the order of detecting the above pressure and temperature values ​​is not fixed.

[0028] The above steps can ensure that the foaming height of the sponge reaches the set value, and the sponge can get a complete demoulding process, so that the sponge with the required quality can be obtained through the sponge foaming machine, and the sponges produced under different conditions can be effectively processed to avoid the waste of foaming raw materials. By precisely controlling the foaming process and parameters, the stability and consistency of sponge production can be ensured, thereby improving the overall production efficiency. Stable foaming height and high-quality sponges can reduce the scrap rate and rework rate, making the production line smoother.

[0029] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0030] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sponge foaming machine, comprising a foaming box (1), characterized in that: A camera (2) is installed above the foaming box (1), a temperature sensor 1 (3) is installed on the inner wall of the foaming box (1), an integrated high-pressure pump (4) is connected to a pipeline on one side of the foaming box (1), adding bottles (5) are fixed on both sides of the foaming box (1), and a temperature sensor 2 is installed inside the foaming box (1); Connecting rings are welded on both sides of the foaming box (1), and adding bottles (5) are installed in the connecting rings on both sides of the foaming box (1); a first adding pipe (51) is connected to the lower pipeline of one of the adding bottles (5), and a second adding pipe (52) is connected to the lower pipeline of the other adding bottle (5); the first adding pipe (51) and the second adding pipe (52) are both connected to the inside of the foaming box (1) by valves; A mounting box (6) is riveted to one side of the foaming box (1), an ejection assembly (7) is installed inside the mounting box (6), a feeding device (8) is arranged above the mounting box (6), a positioning assembly (9) is arranged above the foaming box (1), and a stirring assembly (10) is fixedly connected inside the positioning assembly (9).

2. A sponge foaming machine according to claim 1, characterized in that: The ejection assembly (7) comprises a fixing member (71), wherein the fixing member (71) is riveted to the upper inner wall of the installation box (6), a cylinder 1 (72) is riveted below the fixing member (71), a connecting member (73) is provided on one side of the cylinder 1 (72), a push rod (74) is riveted on one side of the connecting member (73), a push plate (75) is welded to one side of the push rod (74), and a pressure sensor 1 is installed on the side of the push plate (75) that contacts the sponge.

3. A sponge foaming machine according to claim 2, characterized in that: The feeding device (8) comprises a first feeding barrel (81), a first feeding pipe (811) being installed above the first feeding barrel (81), a second feeding barrel (82) being arranged on one side of the first feeding barrel (81), a second feeding pipe (821) being installed above the second feeding barrel (82), a third feeding barrel (83) being arranged on the other side of the first feeding barrel (81), and a third feeding pipe (831) being installed above the third feeding barrel (83).

4. A sponge foaming machine according to claim 3, characterized in that: The positioning assembly (9) comprises a positioning rod (91), the positioning rod (91) being riveted on the top of the foaming box (1), a positioning sleeve (92) being welded to one side of the positioning rod (91), and a stirring assembly (10) being arranged inside the positioning sleeve (92).

5. A sponge foaming machine according to claim 4, characterized in that: The stirring assembly (10) comprises a stirring barrel (101) and a support rod (102); the stirring barrel (101) is installed in a positioning sleeve (92); a discharge port (1011) is provided at the bottom of the stirring barrel (101); an electric control valve is installed on the discharge port (1011); the support rod (102) is welded to the positioning sleeve (92); a connecting rod (103) is welded to the top of the support rod (102); an electric push rod (104) is installed at one end of the connecting rod (103); and a driving member (105) is fixedly connected to the bottom of the electric push rod (104).

6. A sponge foaming machine according to claim 5, characterized in that: The driving member (105) comprises a first positioning ring (1051), a driving rod (1052) is passed through the center of the first positioning ring (1051), one end of the driving rod (1052) is connected to a motor, and the other end of the driving rod (1052) is sleeved with a driving gear (1053), a second positioning ring (1054) is fixed to the upper connecting rod of the first positioning ring (1051), a first stirring rod (106) is passed through the center of the second positioning ring (1054), and one end of the first stirring rod (106) is sleeved with a first driven gear (1055), and a third positioning ring (1056) is fixed to the lower connecting rod of the first positioning ring (1051), a second stirring rod (108) is passed through the center of the third positioning ring (1056), and one end of the second stirring rod (108) is sleeved with a second driven gear (1057); The driving gear (1053) is meshedly connected with the first driven gear (1055) and the second driven gear (1057) respectively; a first stirring rod (106) is inserted through the center of the second stirring rod (108); a first stirring blade (107) is welded to the portion of the first stirring rod (106) extending out of the second stirring rod (108); a micro electric push rod connected to a telescopic stirring blade (1071) is installed inside the first stirring blade (107); a telescopic rod (1061) is installed inside the first stirring rod (106); a second pressure sensor is installed inside the telescopic rod (1061); and a telescopic spring (1062) is welded to the top of the telescopic rod (1061); A second stirring blade (109) is welded to the outer side of the second stirring rod (108); and a cylinder-driven extension portion is provided inside the first stirring blade (107) and the second stirring blade (109); and the extension portion is movably connected to the scraper at the outer end of the first stirring blade (107) and the second stirring blade (109).

7. A sponge foaming machine according to claim 6, characterized in that: The foaming process of the sponge foaming machine includes: The raw materials are fed from a first feed barrel (81), a second feed barrel (82), and a third feed barrel (83) respectively through a first feed pipe (811), a second feed pipe (821), and a third feed pipe (831) into a stirring component (10) for full stirring. The required stirring time is set so that the raw materials for sponge foaming are fully fused. After receiving a signal indicating the end of the stirring time, the discharge port (1011) is opened. The raw materials are fed into a foaming box (1) and heated by a heating ring at the bottom of the foaming box (1). At the same time, an integrated high-pressure pump (4) is used for pressurization to promote the chemical reaction required for sponge foaming and ensure the distribution of the raw materials, so that the raw materials are foamed and solidified. The foaming condition inside the foaming box (1) is reflected by a camera (2). After observing that the foaming condition is satisfactory, the operator opens a box door on one side of the foaming box (1) and starts the ejection component (7) to eject the sponge from the foaming box (1) through a push plate (75) to achieve a rapid demoulding effect, thereby obtaining a foamed sponge.

8. A sponge foaming machine according to claim 7, characterized in that: The process control of the sponge foaming comprises the following steps: The height of the sponge foaming is set to a fixed value H, and the height h of the sponge foaming is detected by a camera (2). The height is specifically defined by marking the inner wall of the foaming box (1), and is used as a comparison reference between H and h, wherein the height of the push plate (75) is higher than H; When h is equal to H, and the camera (2) observes that there are no obvious cracks on the surface of the foamed sponge, it means that the foaming height of the sponge is qualified and the sponge quality is qualified. The ejection assembly (7) can be started to drive the cylinder (72) to drive the connecting member (73) to move. At the same time, the connecting member (73) drives the push rod (74) and the push plate (75) to move to one side, and the foamed sponge in the foaming box (1) is ejected and demolded, thereby obtaining a processed sponge.

9. A sponge foaming machine according to claim 8, characterized in that: The process control of the sponge foaming also includes the following steps: When h is less than H, it means that the foaming height of the sponge is not high enough. At the same time, the camera (2) observes that the foaming of the sponge tends to stop. When this happens, the temperature inside the foaming box (1) reflected by the temperature sensor 1 (3) can be detected. If the temperature is too low, it means that the temperature of the heating coil in the foaming box (1) is not high enough and the temperature needs to be increased to maintain the foaming. When it is found through testing that the cause is not low temperature, the pressure value reflected by the integrated high-pressure pump (4) is tested. When the pressure is too low, the sponge will also have the problem of insufficient foaming height. If the pressure is too low, the pressure of the integrated high-pressure pump (4) needs to be increased to maintain the sponge foaming; When it is detected that the above parameters are all at normal values, it is considered that the foaming height of the sponge detected by the camera (2) is insufficient due to the fact that the amount of foaming agent in the raw material is too small or the quality of the foaming agent is too poor. At this time, the electric valve on the first adding pipe (51) is opened to allow an appropriate amount of auxiliary foaming agent to be added to the foaming box (1). At the same time, the electric push rod (104) causes the first stirring blade (107) to extend downward from the discharge port (1011) into the foaming box (1). After the raw material enters the foaming box (1), it will quickly complete foaming. In order to prevent the sponge in the foamed and unfoamed states from being stirred due to the single stirring direction, the sponge cannot fully promote heat transfer and gas release between the materials, resulting in local overheating and a decrease in sponge quality. The inadequately foamed part will affect the overall performance of the product. At this time, it is necessary to control the first stirring blade (107) of the stirring component (10) to enter the foamed part for stirring, and the second stirring blade (109) to stir the unfoamed raw material part, so as to avoid damaging the already formed sponge structure or affecting the performance of the final product. The height of the foamed sponge is set to L1. When the first stirring rod (106) descends, the telescopic rod (1061) contacts the foamed sponge. At this time, the second pressure sensor will reflect the change in pressure and send a signal to the operating system. When L1 is greater than the total length of the first stirring rod (106) and the telescopic rod (1061), when the pressure change is sensed by the second pressure sensor, the operating system starts to calculate the length of the electric push rod (104) to push the first stirring blade (107) into the foamed sponge until the upper end of the first stirring blade (107) is at the critical value between the foamed and unfoamed parts of the sponge, and continues to stir the foaming box (1) so that the auxiliary foaming agent and the raw material are fully integrated and foamed again. The foaming auxiliary agent is continued to be added until the foaming height of the sponge meets the set value H. When L1 is less than the total length of the first stirring rod (106) and the telescopic rod (1061), the bottom end of the telescopic rod (1061) touches the bottom of the foaming box (1), causing the telescopic spring (1062) to contract under force. At this time, the pressure sensor 2 senses the pressure change and sends a signal to the operating system to control the micro electric push rod to synchronously retract the telescopic stirring blade (1071) until the upper end of the first stirring blade (107) is at the critical value between the foamed and unfoamed parts of the sponge, and continues to stir the foaming box (1), so that the auxiliary foaming agent and the raw material are fully integrated and foamed again, and the sponge foaming height meets the set value H; When L1 is smaller than the contraction range of the telescopic rod (1061) that can be achieved by the telescopic spring (1062), it means that the foaming quality of the sponge is too poor and is not suitable for use, and should be directly recycled and discarded.

10. A sponge foaming machine according to claim 9, characterized in that: The process control of the sponge foaming also includes the following steps: When h is greater than H, it means that the foaming height of the sponge is too high. At this time, the outer surface of the foaming sponge is observed by the camera (2). If a small opening is detected on the surface of the sponge, it indicates that the heating temperature of the foaming box (1) is too high, and the camera (2) emits an alarm to remind the operator to turn off the heating coil. Check the taken out sponge. If the surface opening is small, use adhesive to treat the sponge surface without affecting the subsequent use of the sponge. If the surface opening is large, in order not to waste resources, cut the sponge, reprocess it, splice it, etc. At this time, the outer surface of the foaming sponge is observed through the camera (2), and large cracks are detected on the surface of the sponge, indicating that the pressure in the foaming box (1) is too high. Then the camera (2) also sounds an alarm to remind the operator to turn off the integrated high-pressure pump (4) and perform the same operation as above on the sponge; When the quality of the foamed sponge is too poor in the above situation, the sponge should be recycled; If no obvious cracks are found on the outer surface of the foaming sponge when observed through the camera (2), it means that the foaming height has nothing to do with the pressure and temperature, and is caused by an excessive dosage of the foaming agent. At this time, the electric valve of the second addition pipe (52) containing the inhibitor is opened to allow an appropriate amount of the inhibitor to be added to the foaming box (1). At the same time, the electric push rod (104) drives the first stirring blade (107) to extend downward from the discharge port (1011) into the foaming box (1), so that the first stirring blade (107) and the second stirring blade (109) stir the inside of the foaming box (1) in different directions up and down, so that the inhibitor is fully integrated into the sponge foaming raw material. The foaming box (1) is continuously stirred to allow the inhibitor and the raw material to be fully integrated and foamed again until the sponge foaming height meets the set value H.

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