A polyurethane foaming system

Abstract

The application discloses a polyurethane foaming system, and belongs to the technical field of polyurethane foaming equipment, and has the technical scheme as follows: the polyurethane foaming system comprises an inclined shell, a stock bin, a stirring shaft, a discharge pipe, a bundle-shaped conduit and a spray hole, the bundle-shaped conduit comprises a conduit sleeve which is matched with the discharge pipe, the conduit sleeve is provided with a plurality of mounting holes, a thin pipe is mounted in the mounting holes, a plug is arranged on the conduit sleeve, a driving device is arranged for driving the thin pipe to move along an axis, and a mounting frame is arranged between the plug and the conduit sleeve; the plug is matched with the thin pipe, the mounting frame is movably connected between the plug and the conduit sleeve, the conduit sleeve is provided with a plurality of virtual circles with different diameters, the axes of the virtual circles are the same, the axes of the mounting holes are arranged on the virtual circles, and the corresponding mounting holes on each virtual circle are uniformly distributed.

Description

Technical Field

[0001] This application belongs to the technical field of polyurethane foaming equipment, and particularly relates to a polyurethane foaming system. Background Technology

[0002] Polyurethane is a polymer compound, officially known as polyurethane, which can be made into polyurethane plastics, polyurethane fibers, polyurethane rubber, and elastomers. Foamed plastics are manufactured using foaming machines, also known as foam generators, which are devices that produce foam by mixing an aqueous solution of a foaming agent to a certain concentration. However, existing polyurethane foaming machines often add multiple raw materials together before mixing, which, due to differences in density, can cause the denser materials to concentrate at the bottom due to gravity, resulting in uneven mixing and affecting the quality of the foamed product.

[0003] A Chinese patent with publication number CN111516199B discloses a polyurethane foaming machine, including a shell, a hopper and a drive shaft. The hopper is arranged on the top of the shell and there are multiple sets of hoppers. The bottom of the hopper is connected to an inlet pipe and the bottom of the inlet pipe is connected to a first pressure pump.

[0004] The inclined shell of the aforementioned foaming agent facilitates the mixing of raw materials. However, when the raw materials are added into the shell, there is a risk that they may enter the discharge pipe through the bundle-shaped conduit before they have fully foamed, affecting the overall foaming effect. Summary of the Invention

[0005] The purpose of this application is to address the aforementioned technical problems by providing a polyurethane foaming system that improves the mixing completion rate of raw materials after they enter the shell and prevents some raw materials from entering the discharge pipe without participating in the mixing.

[0006] This application provides a polyurethane foaming system, including an inclined shell, a hopper, a stirring shaft, a discharge pipe, a bundle-shaped conduit, and spray nozzles, wherein the bundle-shaped conduit includes:

[0007] A guide sleeve, adapted to the discharge pipe, is provided with several mounting holes;

[0008] A thin tube is installed in the mounting hole;

[0009] The plug is placed on the conduit sleeve;

[0010] A drive unit is used to drive the thin tube to move along the axis;

[0011] The mounting bracket is placed between the plug and the conduit sleeve;

[0012] The plug is adapted to the thin tube, the mounting bracket is movably connected to the plug and the guide sleeve, and the guide sleeve is provided with several virtual circles of different diameters. The axes of the virtual circles are the same, the axes of the mounting holes are placed on the virtual circles, and the corresponding mounting holes on each virtual circle are evenly distributed.

[0013] The thin tube is installed on the guide sleeve. During the mixing process, the raw materials in the shell can easily enter the discharge pipe through the thin tube. By adding a plug, the plug is controlled to block the thin tube, ensuring that the raw materials enter the discharge pipe after thorough mixing. The plug can move along the axis through the mounting bracket. The thin tube is controlled to extend and retract on the guide sleeve by the drive device. When the thin tube is raised, the plug is moved upward at the same time. In the early stage of mixing, since the raw materials are not fully mixed, the plug seals the thin tube. After mixing is completed, the plug is separated from the thin tube to facilitate the flow of raw materials. The thin tubes located on the same virtual circle are controlled in the same way, which improves the control efficiency.

[0014] Furthermore, the mounting bracket includes:

[0015] The connecting rods are arranged in three parts and are evenly distributed around the axis of the plug;

[0016] The slider is placed on the catheter sleeve;

[0017] The first spring is positioned between the slider and the catheter sleeve;

[0018] Locking mechanism, used to lock the slider;

[0019] A sealing ring is placed between the slider and the conduit sleeve;

[0020] The catheter sleeve is provided with a slider that is adapted to the slider. The slider is provided with an extension that extends outward from the catheter sleeve. The catheter sleeve is provided with an opening that is adapted to the extension. The sealing ring is adapted to the opening. The connecting rod is movably connected to the extension and the plug.

[0021] When the plug moves upward, the connecting rod pulls the slider to move, and then the locking mechanism locks the slider. The thin tube shrinks and separates from the plug, allowing the raw material to be introduced into the discharge pipe through the thin tube. When it is necessary to instantly block the thin tube, the locking mechanism releases the slider, and then the thin tube is instantly blocked under the action of the first spring. The sealing ring improves the sealing performance, and the extension facilitates the connection of the connecting rod and the stable movement of the mounting frame. After one slider is locked by the locking mechanism, the other two sliders connected to the same plug also remain relatively stationary.

[0022] Furthermore, the locking mechanism includes:

[0023] A ring body is placed on the catheter sleeve, and the ring body is provided with a pushing part;

[0024] Locking element, hinged to the guide sleeve;

[0025] Torsion spring, acting on the locking mechanism;

[0026] The limiting part is adapted to the torsion spring;

[0027] The first electromagnet is placed on the conduit sleeve;

[0028] The second electromagnet is placed on the pushing part and corresponds to the first electromagnet.

[0029] The plug has a locking part that is adapted to the locking element, and the ring has a push plate that is adapted to the locking element. The ring corresponds to its virtual circle.

[0030] The slider is locked by the cooperation of the locking element and the locking part. The first electromagnet and the second electromagnet are energized and interact with each other, which acts on the pushing part to control the rotation of the ring. This causes the push plate to act on the locking element, which is used to control the separation of the locking element and the locking part. When the ring rotates and the push plate separates from the locking element, the locking element is reset under the action of the torsion spring, which facilitates the subsequent locking action. One ring corresponds to the locking of all the straws on a virtual circle, which improves the control efficiency and allows the flow state of the thin tubes on different virtual circles to be controlled separately, so as to realize the flow of some thin tubes and the blockage of some thin tubes, which facilitates the adjustment of the flow rate of the bundled conduit.

[0031] Furthermore, the driving device includes:

[0032] The drive motor is mounted on the conduit sleeve;

[0033] Ring teeth;

[0034] The drive gear corresponds to the ring gear;

[0035] The drive shaft is mounted on the drive motor;

[0036] A movable component, used to allow adjacent drive gears to rotate relative to each other, is mounted on the drive shaft;

[0037] The drive gear is mounted on the drive shaft, the inner ring surface of the ring tooth is provided with a guide groove, the guide groove is inclined and has horizontal areas at both ends, and the outer wall surface of the thin tube is provided with a guide portion adapted to the guide groove.

[0038] The drive unit is used to lift and lower the thin tube. It is achieved through a drive motor. The drive gear is connected to the output shaft of the drive motor via a drive shaft. The rotation of the drive gear drives the ring gear to rotate, causing the guide part to move in the guide groove, thereby lifting and lowering the thin tube. Since the diameters of the ring gears are different, their lifting and lowering speeds are also different. Through the cooperation between the ring gear and the drive gear, the angular velocity of the ring gear rotation is controlled to be the same. The thin tube with a larger diameter ring gear has a faster lifting and lowering speed. After the guide part has completed the lifting and lowering in the guide groove, the drive gears for stopping and holding the drive are separated by a movable component, so that the lifting and lowering of the thin tube is completed step by step. The thin tube is gradually started through the horizontal area, which improves the stability of the thin tube lifting and lowering and can maintain the stability of the output power of the drive shaft. Both the ring gear and the drive gear are bevel gears.

[0039] Furthermore, the active component includes:

[0040] The movable shell has teeth at both ends of its inner wall;

[0041] A movable column is inserted into the drive shaft, and the movable column is provided with a movable part that is adapted to the teeth;

[0042] The second spring acts between the movable columns;

[0043] Stabilizing components are used to maintain the stability of the axis between the moving columns;

[0044] The movable housing is movably connected to the drive shaft, the side wall of the movable column is provided with a limiting groove, and the drive shaft is provided with a limiting protrusion adapted to the limiting groove.

[0045] The teeth are placed inside the movable housing and cooperate with the movable column. Under the pressure of the second spring, when the drive gear can rotate, the teeth and the movable column remain in a prohibited state, ensuring the stable output of the entire drive shaft. Through the cooperation of the limiting groove and the limiting protrusion, the movable column can only move along the axial direction of the drive shaft. When one drive gear is stationary and the other drive gear is rotating on both sides of the movable component, the movable housing is stationary with one of the drive gears, and its corresponding movable column, movable part and teeth are stationary. It is in a movable state with the other drive gear, and its corresponding movable part and teeth move relative to each other. The movable column moves along the axial direction. The stabilizing component improves the connection stability between the movable housing, movable column and drive shaft, so that the three of them keep the same axis and do not change.

[0046] Furthermore, the teeth include:

[0047] Inclined guide surface;

[0048] Vertical plane;

[0049] The impact surface is positioned between the inclined guide surface and the vertical surface and at the bottom of the valley between the inclined guide surface and the vertical surface;

[0050] The inclined guide surfaces of the teeth at both ends of the movable shell are inclined in opposite directions.

[0051] The teeth are distributed sequentially on the inner wall of the movable shell via inclined guide surfaces, vertical surfaces, and impact surfaces. When the movable part moves relative to the teeth, the movable part moves along the inclined guide surface, and then, at the vertical surface position, the second spring causes the movable part to impact the impact surface, thus realizing the relative movement between the movable part and the teeth. Sometimes, the guide part may get stuck when moving in the guide groove. By having the movable part impact the impact surface, vibration is generated, which allows the guide part to move smoothly in the guide groove, improving the stability of the guide part's movement in the guide groove. When the guide part moves to the end of the guide groove, the vibration can accelerate the movement of air bubbles in the thin tube, increasing the flow rate of the raw materials.

[0052] Furthermore, the stabilizing component includes:

[0053] The connecting rod is placed on the movable column;

[0054] Hinged joint, used to hinge the connecting rods on both sides;

[0055] The hinge seat and two connecting rods form a group, and the stabilizing components are provided in three or more groups, which are evenly distributed around the axis of the movable column.

[0056] The connecting rods are hinged to the movable column, and all connecting rods are hinged to the hinge seats. When the movable column moves along the axis, the stabilizing component folds, and all the hinge seats move inward or outward, thereby ensuring a stable connection between the drive shafts at both ends of the movable shell.

[0057] Furthermore, the specific control steps include:

[0058] S1, start the drive motor, control the lifting and lowering of the thin tube by controlling the forward or reverse rotation of the drive motor. When the thin tube rises, the plug is lifted at the same time, until the locking part locks the locking part.

[0059] S2, by controlling the first electromagnet and the second electromagnet on the locking mechanism to release the locking part from the locking part, so that the plug can cooperate with the thin tube to prevent the raw material from entering the discharge pipe.

[0060] By driving the thin tube to rise and fall with the drive motor, and unlocking the plug through the locking mechanism, the plug can be instantly sealed to the thin tube, improving the accuracy of raw material flow.

[0061] The beneficial effects of this application are:

[0062] 1. By adding a plug, the plug is controlled to block the thin tube, ensuring that the raw materials enter the discharge pipe after being fully mixed. The thin tube is controlled to extend and retract on the guide sleeve by the drive device. When the thin tube is raised, the plug is moved upward at the same time. In the early stage of mixing, since the raw materials are not fully mixed, the plug is used to seal the thin tube. After mixing is completed, the plug is separated from the thin tube to facilitate the flow of raw materials.

[0063] 2. When the plug moves upward, it pulls the slider to move through the connecting rod, and then locks the slider through the locking mechanism. When it is necessary to block the thin tube instantly, the slider is released through the locking mechanism, and then the thin tube is instantly blocked under the action of the first spring.

[0064] 3. The drive gear is connected to the output shaft of the drive motor via the drive shaft. The rotation of the drive gear drives the ring gear to rotate, causing the guide part to move in the guide groove, thereby realizing the lifting and lowering of the thin tube. After the guide part completes the lifting and lowering in the guide groove, the drive gears for stopping and holding are separated by the movable component, so that the thin tube can be lifted and lowered step by step.

[0065] 4. The teeth are placed inside the movable housing and cooperate with the movable column. Under the pressure of the second spring, when the drive gear can rotate, the teeth and the movable column remain in a prohibited state, ensuring the stable output of the entire drive shaft. Through the cooperation of the limiting groove and the limiting protrusion, the movable column can only move along the axial direction of the drive shaft. Sometimes the guide part may get stuck when moving in the guide groove. The movable part hits the impact surface, generating vibration so that the guide part can move smoothly in the guide groove, improving the stability of the guide part moving in the guide groove. Attached Figure Description

[0066] Figure 1 This is a schematic diagram of the foaming system of this application;

[0067] Figure 2 For the purposes of this application Figure 1 A magnified view of point A;

[0068] Figure 3 This is a schematic diagram of the locking mechanism of this application;

[0069] Figure 4 This is a schematic diagram of the opening structure in this application;

[0070] Figure 5 For the purposes of this application Figure 3 A magnified view of point B;

[0071] Figure 6 This is a schematic diagram of the drive device of this application;

[0072] Figure 7 This is a schematic diagram of the unfolded structure of the guide groove in this application;

[0073] Figure 8 This is a schematic diagram of the structure of the active component of this application;

[0074] Figure 9 This is a schematic diagram of the unfolded structure of the teeth in this application;

[0075] In the attached figures, the following reference numerals are used: 100, inclined shell; 110, hopper; 120, stirring shaft; 130, discharge pipe; 140, nozzle; 200, bundled conduit; 201, virtual circle; 210, conduit sleeve; 211, mounting hole; 212, opening; 220, thin tube; 221, guide part; 230, plug; 300, mounting bracket; 310, connecting rod; 320, slider; 321, extension part; 322, locking part; 330, first spring; 340, locking mechanism; 341, ring; 342, pushing part; 343, locking element; 344, torsion spring; 345, limit. 346. First electromagnet; 347. Second electromagnet; 348. Push plate; 350. Sealing ring; 400. Drive device; 410. Drive motor; 420. Ring gear; 421. Guide groove; 430. Drive gear; 440. Drive shaft; 450. Movable component; 451. Movable housing; 452. Tooth; 453. Movable column; 454. Movable part; 455. Limiting groove; 456. Limiting protrusion; 457. Inclined guide surface; 458. Vertical surface; 459. Impact surface; 460. Second spring; 500. Stabilizing component; 510. Connecting rod; 520. Hinge seat. Detailed Implementation

[0076] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0077] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0078] The embodiments of this application are described in detail below with reference to the accompanying drawings, through specific examples and application scenarios.

[0079] Example 1:

[0080] like Figure 1 , Figure 2 , Figure 6 As shown, this application provides a polyurethane foaming system, including an inclined shell 100, a hopper 110, a stirring shaft 120, a discharge pipe 130, a bundled conduit 200, and a spray nozzle 140. The bundled conduit 200 includes:

[0081] The guide sleeve 210 is adapted to the discharge pipe 130, and the guide sleeve 210 is provided with a plurality of mounting holes 211;

[0082] A thin tube 220 is installed in the mounting hole 211;

[0083] The plug 230 is placed on the conduit sleeve 210;

[0084] Drive device 400 is used to drive the thin tube 220 to move along the axis;

[0085] Mounting bracket 300 is placed between plug 230 and conduit sleeve 210;

[0086] The plug 230 is adapted to the thin tube 220, and the mounting bracket 300 is movably connected to the plug 230 and the conduit sleeve 210. The conduit sleeve 210 is provided with a number of virtual circles 201 of different diameters. The axes of each virtual circle 201 are the same, and the axis of the mounting hole 211 is placed on the virtual circle 201. The mounting holes 211 on each virtual circle 201 are evenly distributed.

[0087] The thin tube 220 is installed on the guide sleeve 210. During the stirring process, the raw materials in the shell can easily enter the discharge pipe 130 through the thin tube 220. By adding a plug 230, the plug 230 is controlled to block the thin tube 220, ensuring that the raw materials enter the discharge pipe 130 after sufficient stirring. The plug 230 can be moved along the axis by the mounting bracket 300. The thin tube 220 is controlled to extend and retract on the guide sleeve 210 by the drive device 400. When the thin tube 220 is raised, the plug 230 is moved upward at the same time. In the early stage of stirring, since the raw materials are not fully mixed, the thin tube 220 is blocked by the plug 230. After stirring is completed, the plug 230 is separated from the thin tube 220 to facilitate the flow of raw materials. The thin tubes 220 located on the same virtual circle 201 are controlled in the same way, which improves the control efficiency.

[0088] Example 2:

[0089] like Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, this application embodiment provides a polyurethane foaming system, which, in addition to including the above-mentioned technical features, further includes the mounting bracket 300 comprising:

[0090] Three connecting rods 310 are provided and are evenly distributed around the axis of the plug 230;

[0091] Slider 320 is placed on catheter sleeve 210;

[0092] The first spring 330 is positioned between the slider 320 and the conduit sleeve 210;

[0093] Locking mechanism 340 is used to lock slider 320;

[0094] The sealing ring 350 is placed between the slider 320 and the conduit sleeve 210;

[0095] The conduit sleeve 210 is provided with a slider 320 adapted to the slider 320. The slider 320 is provided with an extension 321 extending outward from the conduit sleeve 210. The conduit sleeve 210 is provided with an opening 212 adapted to the extension 321. The sealing ring 350 is adapted to the opening 212. The connecting rod 310 is movably connected to the extension 321 and the plug 230.

[0096] When the plug 230 moves upward, the connecting rod 310 pulls the slider 320 to move, and then the locking mechanism 340 locks the slider 320. The thin tube 220 retracts and separates from the plug 230, and the raw material is introduced into the discharge pipe 130 through the thin tube 220. When it is necessary to block the thin tube 220 instantly, the locking mechanism 340 releases the slider 320, and then the first spring 330 instantly blocks the thin tube 220. The sealing ring 350 improves the sealing performance, and the extension 321 facilitates the connection of the connecting rod 310 and the stable movement of the mounting bracket 300. After one slider 320 is locked by the locking mechanism 340, the other two sliders 320 connected to the same plug 230 also remain relatively stationary.

[0097] Example 3:

[0098] like Figure 3 , Figure 5 As shown, this application embodiment provides a polyurethane foaming system, which, in addition to including the above-mentioned technical features, further includes the locking mechanism 340 comprising:

[0099] An annular body 341 is placed on the catheter sleeve 210, and the annular body 341 is provided with a pushing part 342;

[0100] Locking element 343 is hinged to the conduit sleeve 210;

[0101] Torsion spring 344 acts on locking element 343;

[0102] The limiting part 345 is adapted to the torsion spring 344;

[0103] The first electromagnet 346 is placed on the conduit sleeve 210;

[0104] The second electromagnet 347 is placed on the pusher 342 and corresponds to the first electromagnet 346;

[0105] Among them, one of the sliders 320 corresponding to the plug 230 is provided with a locking part 322 adapted to the locking member 343, and the ring 341 is provided with a push plate 348 adapted to the locking member 343. The ring 341 corresponds to its corresponding virtual circle 201.

[0106] The locking element 343 cooperates with the locking part 322 to lock the slider 320. The first electromagnet 346 and the second electromagnet 347 are energized to generate an interaction, which acts on the pushing part 342 to control the rotation of the ring 341. This causes the push plate 348 to act on the locking element 343 to control the separation of the locking element 343 from the locking part 322. When the ring 341 rotates and the push plate 348 separates from the locking element 343, the locking element 343 is reset under the action of the torsion spring 344, which facilitates subsequent locking. One ring 341 corresponds to the locking of all the straws on one virtual circle 201, which improves control efficiency and allows the flow state of the thin tubes 220 on different virtual circles 201 to be controlled individually, so that some thin tubes 220 can flow and some thin tubes 220 can be blocked, which facilitates the adjustment of the flow speed of the bundle-shaped conduit 200.

[0107] Example 4:

[0108] like Figure 6 , Figure 7 As shown, this application embodiment provides a polyurethane foaming system, which, in addition to including the above-mentioned technical features, further includes the following driving device 400:

[0109] The drive motor 410 is mounted on the conduit sleeve 210;

[0110] Ring gear 420;

[0111] Drive gear 430 corresponds to ring gear 420;

[0112] Drive shaft 440 is mounted on drive motor 410;

[0113] The movable component 450, which is used to make adjacent drive gears 430 rotate relative to each other, is mounted on the drive shaft 440;

[0114] The drive gear 430 is mounted on the drive shaft 440. The inner ring surface of the ring gear 420 is provided with a guide groove 421. The guide groove 421 is inclined and has horizontal areas at both ends. The outer wall surface of the thin tube 220 is provided with a guide portion 221 that is adapted to the guide groove 421.

[0115] The drive device 400 is used to drive the thin tube 220 to rise and fall, which is achieved by the drive motor 410. The drive gear 430 is connected to the output shaft of the drive motor 410 via the drive shaft 440. The rotation of the drive gear 430 drives the ring gear 420 to rotate, causing the guide part 221 to move in the guide groove 421, thereby realizing the rising and falling of the thin tube 220. Since the diameters of the ring gears 420 are different, their rising and falling speeds are also different. The angle of rotation of the ring gears 420 is controlled by the cooperation between the ring gears 420 and the drive gear 430. At the same speed, the thin tube 220 corresponding to the larger diameter ring tooth 420 has a faster lifting speed. After the guide part 221 completes the lifting in the guide groove 421, the drive gear 430 for stopping drive and holding drive is separated by the movable component 450, so that the thin tube 220 can gradually complete the lifting work. The thin tube 220 that achieves lifting through the horizontal area is gradually started, which improves the stability of the thin tube 220 during lifting and can maintain the stability of the output power of the drive shaft 440. Both the ring tooth 420 and the drive gear 430 adopt bevel teeth.

[0116] Example 5:

[0117] like Figure 8 As shown, this application embodiment provides a polyurethane foaming system, which, in addition to including the above-mentioned technical features, further includes the following active component 450:

[0118] The movable shell 451 has teeth 452 at both ends of its inner wall;

[0119] A movable column 453 is inserted into a drive shaft 440, and the movable column 453 is provided with a movable part 454 that is adapted to the toothed part 452.

[0120] The second spring 460 acts between the movable columns 453;

[0121] Stabilizing component 500 is used to maintain the stability of the axis between the moving columns 453;

[0122] The movable housing 451 is movably connected to the drive shaft 440. The side wall of the movable column 453 is provided with a limiting groove 455, and the drive shaft 440 is provided with a limiting protrusion 456 that is adapted to the limiting groove 455.

[0123] The tooth 452 is placed inside the movable housing 451 and engages with the movable column 453. Under the pressure of the second spring 460, when the drive gear 430 can rotate, the tooth 452 and the movable column 453 remain in a prohibited state, ensuring the stable output of the entire drive shaft 440. Through the engagement of the limiting groove 455 and the limiting protrusion 456, the movable column 453 can only move along the axial direction of the drive shaft 440. When one drive gear 430 is stationary and the other drive gear 430 is rotating on both sides of the movable component 450, the movable housing 451 is stationary with one of the drive gears 430, and its corresponding movable column 453, movable part 454 and tooth 452 are stationary, while it is in an active state with the other drive gear 430. Its corresponding movable part 454 and tooth 452 move relative to each other, and the movable column 453 moves along the axial direction. The stabilizing component 500 improves the connection stability between the movable housing 451, movable column 453 and drive shaft 440, so that the three remain on the same axis without change.

[0124] Example 6:

[0125] like Figure 9 As shown, this application embodiment provides a polyurethane foaming system, which, in addition to including the above-mentioned technical features, further includes the following: the teeth 452 include:

[0126] Inclined guide surface 457;

[0127] Vertical plane 458;

[0128] The impact surface 459 is positioned between the inclined guide surface 457 and the vertical surface 458 and is located at the bottom of the valley between the inclined guide surface 457 and the vertical surface 458.

[0129] The inclined guide surfaces 457 of the teeth 452 at both ends of the movable shell 451 are inclined in opposite directions.

[0130] The teeth 452 are sequentially distributed on the inner wall of the movable shell 451 via the inclined guide surface 457, the vertical surface 458, and the impact surface 459. When the movable part 454 moves relative to the teeth 452, the movable part 454 moves along the inclined guide surface 457, and then at the position of the vertical surface 458, the second spring 460 causes the movable part 454 to impact the impact surface 459, thus realizing the relative movement between the movable part 454 and the teeth 452. Sometimes, the guide part 221 may get stuck when moving in the guide groove 421. By having the movable part 454 impact the impact surface 459, vibration is generated, which allows the guide part 221 to move smoothly in the guide groove 421, improving the stability of the guide part 221 in the guide groove 421. When the guide part 221 moves to the end of the guide groove 421, the vibration can accelerate the movement of air bubbles in the thin tube 220, increasing the flow rate of raw materials.

[0131] Example 7:

[0132] like Figure 8 As shown, this application embodiment provides a polyurethane foaming system, which, in addition to including the above-mentioned technical features, further includes the following:

[0133] Connecting rod 510 is placed on movable column 453;

[0134] Hinged base 520 is used to hinge the connecting rods 510 on both sides;

[0135] The hinge seat 520 and the two connecting rods 510 form a group, and the stabilizing components 500 are provided in three or more groups and are evenly distributed around the axis of the movable column 453.

[0136] The connecting rod 510 is hinged to the movable column 453, and all connecting rods 510 are hinged to the hinge seat 520. When the movable column 453 moves along the axis, the stabilizing component 500 folds, and all hinge seats 520 move inward or outward, thereby ensuring a stable connection between the drive shafts 440 at both ends of the movable housing 451.

[0137] Example 8:

[0138] This application provides a polyurethane foaming system, which, in addition to the above-mentioned technical features, further includes the following specific control steps:

[0139] S1, start the drive motor 410, control the thin tube 220 to rise and fall by controlling the drive motor 410 to rotate forward or reverse. When the thin tube 220 rises, the plug 230 is lifted at the same time, until the locking part 343 locks the locking part 322.

[0140] S2, the locking member 343 and the locking part 322 are unlocked by the first electromagnet 346 and the second electromagnet 347 on the locking mechanism 340, so that the plug 230 and the thin tube 220 cooperate to block the raw material from entering the discharge pipe 130.

[0141] The capillary tube 220 is driven to rise and fall by the drive motor 410. When the plug 230 is unlocked by the locking mechanism 340, the plug 230 can instantly block the capillary tube 220, thereby improving the accuracy of the raw material flow rate.

[0142] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0143] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A polyurethane foaming system, comprising an inclined shell (100), a hopper (110), a stirring shaft (120), a discharge pipe (130), a bundled conduit (200), and spray nozzles (140), characterized in that, The bundle-like ducts (200) include: The guide sleeve (210) is adapted to the discharge pipe (130), and the guide sleeve (210) is provided with a plurality of mounting holes (211). A thin tube (220) is installed in the mounting hole (211); The plug (230) is placed on the conduit sleeve (210); A drive unit (400) is used to drive the capillary tube (220) to move along the axis; The mounting bracket (300) is placed between the plug (230) and the conduit sleeve (210); The plug (230) is adapted to the thin tube (220), the mounting bracket (300) is movably connected to the plug (230) and the conduit sleeve (210), the conduit sleeve (210) is provided with a number of virtual circles (201) of different diameters, each virtual circle (201) has the same axis, the axis of the mounting hole (211) is placed on the virtual circle (201), and the corresponding mounting holes (211) on each virtual circle (201) are evenly distributed; The mounting bracket (300) includes: The connecting rod (310) has three parts, which are evenly distributed around the axis of the plug (230); The slider (320) is placed on the catheter sleeve (210); The first spring (330) is placed between the slider (320) and the conduit sleeve (210); A locking mechanism (340) is used to lock the slider (320); A sealing ring (350) is placed between the slider (320) and the conduit sleeve (210); The slider (320) is provided with an extension (321) extending outward to the outside of the conduit sleeve (210), the conduit sleeve (210) is provided with an opening (212) adapted to the extension (321), the sealing ring (350) is adapted to the opening (212), and the connecting rod (310) is movably connected to the extension (321) and the plug (230). The locking mechanism (340) includes: The annular body (341) is placed on the catheter sleeve (210), and the annular body (341) is provided with a pushing part (342). The locking element (343) is hinged to the conduit sleeve (210); Torsion spring (344) acts on locking element (343); The limiting part (345) is adapted to the torsion spring (344); The first electromagnet (346) is placed on the guide sleeve (210); The second electromagnet (347) is placed on the pusher (342) and corresponds to the first electromagnet (346); Among them, one of the sliders (320) corresponding to the plug (230) is provided with a locking part (322) adapted to the locking member (343), and the ring (341) is provided with a push plate (348) adapted to the locking member (343).

2. The polyurethane foaming system according to claim 1, characterized in that, The drive unit (400) includes: A drive motor (410) is mounted on the conduit sleeve (210); Ring teeth (420); The drive gear (430) corresponds to the ring gear (420); A drive shaft (440) is mounted on a drive motor (410); An active component (450), used to rotate adjacent drive gears (430) relative to each other, is mounted on a drive shaft (440); The drive gear (430) is mounted on the drive shaft (440), the inner ring surface of the ring tooth (420) is provided with a guide groove (421), the guide groove (421) is inclined and has horizontal areas at both ends, and the outer wall surface of the thin tube (220) is provided with a guide part (221) that is adapted to the guide groove (421).

3. The polyurethane foaming system according to claim 2, characterized in that, The active component (450) includes: The movable shell (451) has teeth (452) at both ends of its inner wall. A movable column (453) is inserted into a drive shaft (440), and the movable column (453) is provided with a movable part (454) that is adapted to the toothed part (452). The second spring (460) acts between the movable columns (453); Stabilizing component (500) for maintaining the stability of the axis between the moving columns (453); The movable housing (451) is movably connected to the drive shaft (440), the side wall of the movable column (453) is provided with a limiting groove (455), and the drive shaft (440) is provided with a limiting protrusion (456) that is adapted to the limiting groove (455).

4. The polyurethane foaming system according to claim 3, characterized in that, The teeth (452) include: Inclined guide surface (457); Vertical plane (458); The impact surface (459) is placed between the inclined guide surface (457) and the vertical surface (458) and is located at the bottom of the valley between the inclined guide surface (457) and the vertical surface (458); The inclined guide surfaces (457) of the teeth (452) at both ends of the movable shell (451) are inclined in opposite directions.

5. The polyurethane foaming system according to claim 4, characterized in that, The stabilizing component (500) includes: The connecting rod (510) is placed on the movable column (453); Hinged seat (520) for hinged connection of connecting rods (510) on both sides; The hinge seat (520) and the two connecting rods (510) form a group, and the stabilizing components (500) are provided in three or more groups and are evenly distributed around the axis of the movable column (453).

6. The polyurethane foaming system according to claim 5, characterized in that, The specific control steps include: S1, start the drive motor (410), control the thin tube (220) to rise or fall by controlling the drive motor (410) to rotate forward or reverse. When the thin tube (220) rises, the plug (230) is lifted at the same time, until the locking part (343) locks the locking part (322). S2, by controlling the locking member (343) and the locking part (322) to release the locking mechanism (340) through the first electromagnet (346) and the second electromagnet (347), the plug (230) and the thin tube (220) are engaged to prevent the raw material from entering the discharge pipe (130).

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