Sponge foaming machine stirring cavity structure capable of preventing raw materials from sticking to the wall

Abstract

This application discloses a mixing chamber structure for a sponge foaming machine that prevents raw materials from sticking to the wall, relating to the field of sponge manufacturing. It includes a connecting seat, on one side of which a mixing tank is movably mounted. The mixing tank contains an electric heating plate, a mixing component, a scraper, and a Teflon anti-stick layer. The scraper contains multiple solid lubricating waxes, and the scraper lip has through holes for the solid lubricating wax to flow out when heated. In this application, the solid lubricating wax in the scraper cavity melts under the heat of the electric heating plate in the mixing tank and seeps out through the through holes to the contact surface, forming a lubricating film. Simultaneously, the Teflon anti-stick layer on the inner wall of the mixing tank provides basic anti-sticking, and the seeping lubricating wax further enhances the anti-sticking effect, significantly reducing friction between the scraper and the inner wall and raw material particles. This slows down the wear and deformation of the polyurethane scraper, such as fuzzing and curling, achieving a self-lubricating effect and reducing raw material sticking to the wall.

Description

Technical Field

[0001] This application relates to the field of sponge manufacturing, and in particular to a mixing chamber structure for a sponge foaming machine that prevents raw materials from sticking to the wall. Background Technology

[0002] To ensure the uniform mixing and full reaction of foaming raw materials (such as polyether polyols, isocyanates, foaming agents, catalysts, etc.) and ultimately form a structurally stable sponge foam, a sponge foaming machine firstly breaks down the stratification of raw materials through its stirring chamber structure. This allows the components to form a homogeneous mixture in a short time, avoiding problems such as large local density differences in the sponge, the presence of hard and soft foam mixtures, or voids caused by uneven mixing.

[0003] The existing mixing chamber structure mainly includes a mixing tank, mixing blades, a scraper made of polytetrafluoroethylene material, a heating plate, and a Teflon anti-stick layer on the inner wall of the mixing tank; the Teflon anti-stick layer and the scraper together can reduce the problem of raw materials adhering to the inner wall to a certain extent.

[0004] However, existing technologies suffer from the problem of easy wear and deformation of the scraper edges: When the scraper edges rub against the barrel wall for extended periods, especially when the raw material contains tiny filler particles, the polyurethane material is prone to "fuzzing and curling." After wear, the gap between the scraper and the barrel wall widens from 0.1-0.3mm to over 0.5mm, causing raw material to become embedded in the gap, forming "dead zones" that cannot be scraped off. This accumulation and solidification further exacerbates scraper wear, creating a vicious cycle and resulting in a large amount of raw material sticking to the barrel wall. To address this, we propose a sponge foaming machine mixing chamber structure to prevent raw material sticking to the barrel wall, thus solving the problems encountered in existing technologies. Utility Model Content

[0005] To address the problem of easy wear and deformation at the edges of the scraper, this application provides a mixing chamber structure for a sponge foaming machine that prevents raw materials from sticking to the wall.

[0006] The technical solution provided in this application for a sponge foaming machine mixing chamber structure that prevents raw materials from sticking to the wall is as follows:

[0007] The device includes a connecting base, on one side of which a mixing tank is movably mounted. The mixing tank contains an electric heating plate, a stirring component, a scraper, and a Teflon non-stick layer. The scraper contains multiple solid lubricating waxes, and the scraper lip has through holes for the solid lubricating waxes to flow out when heated.

[0008] By adopting the above technical solution, self-lubrication is achieved through the combination of solid lubricating wax and Teflon non-stick layer with the electric heating plate.

[0009] Preferably, a controller is fixed to one side of the connecting seat, and a sliding plate is slidably mounted on one side of the connecting seat via a sliding rod. A second electric telescopic rod is fixed between one side of the sliding plate and one side of the connecting seat to drive the mixing tank to move.

[0010] By adopting the above technical solution, the mixing tank is driven to move horizontally by the No. 2 electric telescopic rod.

[0011] Preferably, a top plate is slidably installed inside the connecting seat via a slide rail, and an electric telescopic rod is fixed between the upper surface of the top plate and the top wall of the connecting seat for driving the top plate to rise and fall.

[0012] By adopting the above technical solution, the No. 1 electric telescopic rod drives the top plate to rise and fall.

[0013] Preferably, the stirring component includes a servo motor fixed to the lower surface of the top plate. The output end of the servo motor is fixed with a connecting shaft, and a stirring blade is fixed to the periphery of the connecting shaft by bolts. A sleeve is fixed to the periphery of the connecting shaft by bolts. One side of the sleeve is fixed to a scraper by a connecting rod. The scraping lip of the scraper is in contact with the inner wall of the stirring tank. The inner wall of the stirring tank is provided with a Teflon non-stick layer. An electric heating plate is fixed inside the stirring tank.

[0014] By adopting the above technical solution, the Teflon non-stick layer provides a better lubrication effect.

[0015] Preferably, the scraper has at least nine cavities, each cavity is filled with solid lubricating wax, and each cavity is connected to one of the corresponding through holes.

[0016] By adopting the above technical solution, the through hole is used to melt and extract solid lubricating wax.

[0017] Preferably, a glass cover plate is fixed to one side of the scraper by bolts.

[0018] By adopting the above technical solution, the glass cover makes it easy to observe the remaining solid lubricating wax in the scraper.

[0019] Preferably, a sealing ring is embedded between the inner side of the glass cover and one side of the scraper.

[0020] By adopting the above technical solution, the sealing ring is used to increase the sealing performance between the scraper and the glass cover.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] First, the solid lubricating wax in the inner cavity of the scraper melts under the heat of the electric heating plate of the mixing tank and seeps out through the scraper lip through-hole to the contact surface to form a lubricating film. At the same time, the Teflon anti-stick layer on the inner wall of the mixing tank provides basic anti-sticking. The seeping lubricating wax can further enhance the anti-sticking effect, greatly reduce the friction between the scraper and the inner wall and raw material particles, slow down the wear and deformation of the polyurethane scraper such as fuzzing and curling, achieve a self-lubricating effect, and reduce the sticking of raw materials to the wall. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the stirring chamber of a sponge foaming machine to prevent raw materials from sticking to the wall, according to an embodiment of this application.

[0024] Figure 2 This is a schematic diagram showing the connection between the agitator and the scraper in this application;

[0025] Figure 3 This is a schematic diagram of the scraper in this application;

[0026] Figure 4 This is an exploded view of the scraper in this application;

[0027] Figure 5 This is a front view diagram of this application;

[0028] Reference numerals: 1. Connecting seat; 2. Mixing tank; 3. Mixing component; 31. Servo motor; 32. Connecting shaft; 33. Sleeve; 34. Mixing blade; 4. Scraper; 41. Solid lubricating wax; 42. Through hole; 43. Cavity; 44. Sealing ring; 45. Glass cover; 5. Teflon anti-stick layer; 6. Electric telescopic rod No. 1; 7. Top plate; 8. Controller; 9. Electric telescopic rod No. 2; 10. Slide plate. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1 - Further details of this application will be provided in section 5.

[0030] This application discloses a mixing chamber structure for a sponge foaming machine that prevents raw materials from sticking to the wall.

[0031] Includes a connecting seat 1, a mixing tank 2 is movably provided on one side of the connecting seat 1, an electric heating plate, a stirring component 3, a scraper 4 and a Teflon non-stick layer 5 are provided inside the mixing tank 2, a plurality of solid lubricating waxes 41 are provided inside the scraper 4, and a through hole 42 is provided inside the scraper lip of the scraper 4 for the solid lubricating waxes 41 to flow out when heated.

[0032] The connecting seat 1 serves as the installation base for the overall structure, and the movable mixing tank 2 on one side facilitates material feeding and finished product transfer. The electric heating plate inside the mixing tank 2 is used to heat the materials, providing the temperature conditions for the foaming reaction and the melting of solid lubricating wax 41. The stirring component 3 is responsible for mixing and stirring the foaming raw materials to ensure the reaction of the raw materials. The scraper 4, by adhering to the tank wall, can actively scrape off the attached raw materials, reducing wall adhesion. The multiple solid lubricating waxes 41 inside can flow out through the through holes 42 of the scraper lip after being heated, forming a lubricating film between the scraper 4 and the tank wall, reducing scraper wear, filling tiny gaps, and further reducing wall adhesion. The Teflon anti-stick layer 5 on the inner wall of the mixing tank 2 provides a basic anti-sticking effect, working synergistically with the scraper 4 and solid lubricating wax 41 to jointly solve the problem of raw materials sticking to the wall.

[0033] It should be noted that the mixing temperature of the raw materials in the sponge foaming machine needs to be adjusted according to the raw material formula, and is usually controlled between 20-55℃. This range can take into account the reactivity of the raw materials and the foaming stability, and avoid uneven mixing and insufficient foaming due to too low a temperature, or too fast reaction and disordered foam structure due to too high a temperature. For some formulas containing special additives, the temperature may be slightly adjusted to 18-55℃.

[0034] Solid lubricating wax 41 is a compound material of microcrystalline wax and polyethylene wax. Some may add 5%-10% polytetrafluoroethylene powder to enhance wear resistance. The ratio of the two is mostly 6:4 to 7:3. Its melting temperature is usually 50-60℃, which can be matched with the preheating temperature of the electric heating plate of the mixing tank to ensure that it can flow smoothly after heating and will not be lost quickly due to excessive temperature.

[0035] The diameter of the through hole 42 is generally designed to be 0.5-1.2mm, which can ensure that the solid lubricating wax 41 melts and flows out smoothly to form a lubricating film, and can also avoid the wax material from flowing out too quickly due to the hole diameter being too large, or the hole diameter being blocked by impurities due to the hole diameter being too small.

[0036] Specifically, a controller 8 is fixed on one side of the connecting seat 1, and a sliding plate 10 is slidably installed on one side of the connecting seat 1 via a sliding rod. A second electric telescopic rod 9 is fixed between one side of the sliding plate 10 and one side of the connecting seat 1 to drive the mixing tank 2 to move.

[0037] The function of the second electric telescopic rod 9 is to drive the mixing tank 2 to move, which facilitates the addition of materials and the transfer of finished products.

[0038] Specifically, a top plate 7 is slidably installed inside the connecting seat 1 via a slide rail, and an electric telescopic rod 6 is fixed between the upper surface of the top plate 7 and the top wall of the connecting seat 1 to drive the top plate 7 to rise and fall.

[0039] The function of the No. 1 electric telescopic rod 6 is to drive the top plate 7 to rise and fall, thereby moving the mixing component 3 and the scraper 4 into and out of the mixing tank 2.

[0040] Specifically, the stirring component 3 includes a servo motor 31 fixed to the lower surface of the top plate 7. The output end of the servo motor 31 is fixed with a connecting shaft 32, and the periphery of the connecting shaft 32 is fixed with a stirring blade 34 by bolts. The periphery of the connecting shaft 32 is fixed with a sleeve 33 by bolts. One side of the sleeve 33 is fixed to a scraper 4 by a connecting rod. The scraping lip of the scraper 4 is in contact with the inner wall of the stirring tank 2. The inner wall of the stirring tank 2 is provided with a Teflon anti-stick layer 5. An electric heating plate is fixed inside the stirring tank 2.

[0041] The scraper 4 is fixed by the sleeve 33 and the connecting rod, so that the scraper lip of the scraper 4 is in contact with the inner wall of the mixing tank 2. With the help of the Teflon anti-stick layer 5, the raw materials sticking to the wall are scraped off. The electric heating plate is used to heat the materials in the tank to facilitate stirring and to provide temperature conditions for foaming reaction and melting of solid lubricating wax 41.

[0042] Specifically, at least nine cavities 43 are opened inside the scraper 4, and solid lubricating wax 41 is placed in each cavity 43. Each cavity 43 is connected to one of the corresponding through holes 42.

[0043] The function of the through hole 42 is to allow the solid lubricating wax 41 to flow to the contact surface after being heated, thereby reducing the wear of the scraper 4 and the sticking of the raw material to the wall.

[0044] Specifically, a glass cover plate 45 is fixed to one side of the scraper 4 by bolts;

[0045] The glass cover plate 45 allows for easy observation of the remaining amount of solid lubricating wax 41 inside the cavity 43, facilitating subsequent replenishment.

[0046] Specifically, a sealing ring 44 is embedded between the inner side of the glass cover plate 45 and one side of the scraper 4;

[0047] The sealing ring 44 prevents raw materials from seeping into the cavity 43 and contaminating the solid lubricating wax 41, thus ensuring the lubrication effect.

[0048] The implementation principle of this utility model is as follows: the controller 8 starts the first electric telescopic rod 6, drives the top plate 7 to rise, and drives the stirring component 3 and scraper 4 to rise synchronously and separate from the stirring tank 2. Then, the controller controls the second electric telescopic rod 9, drives the slide plate 10 to move the stirring tank 2 outward along the slide rod to the feeding position.

[0049] Next, sponge foaming material is added into the mixing tank 2 by the feeder, and the mixing tank 2 is reset by controlling the second electric telescopic rod 9; the first electric telescopic rod 6 is started by the controller 8, and the top plate 7 is driven to descend, so that the mixing component 3 and the scraper 4 are inserted into the mixing tank 2 until the scraper lip of the scraper 4 is in contact with the Teflon anti-stick layer 5 on the inner wall of the mixing tank 2.

[0050] Finally, the electric heating plate inside the mixing tank 2 is activated for preheating, and the servo motor 31 is started simultaneously, driving the connecting shaft 32 to rotate. The connecting shaft 32 drives the scraper 4 to rotate via the sleeve 33 and connecting rod, and the stirring blade 34, fixed by bolts, rotates synchronously. The heating plate raises the temperature inside the mixing tank 2, and the solid lubricating wax 41 in the cavity 43 of the scraper 4 melts upon heating. It flows through the through hole 42 to the contact surface between the scraper lip and the Teflon anti-stick layer 5, forming a lubricating film. The rotating scraper 4 scrapes off the material from the wall surface, and the stirring blade 34 mixes and stirs the raw materials. After foaming and stirring are completed, the servo motor 31 and the electric heating plate are turned off. The top plate 7 is raised via the first electric telescopic rod 6, and the mixing tank 2 is removed via the second electric telescopic rod 9, transferring the finished product.

[0051] The remaining amount of solid lubricating wax 41 can be observed through the glass cover plate 45. Unscrew the bolts to open the glass cover plate 45, add new solid lubricating wax 41 into the cavity 43, and then reset the glass cover plate 45 and ensure that the sealing ring 44 is in place.

[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A stirring chamber structure for a sponge foaming machine to prevent raw materials from sticking to the wall, comprising a connecting seat (1), a stirring tank (2) movably disposed on one side of the connecting seat (1), and an electric heating plate, a stirring component (3), a scraper (4), and a Teflon anti-sticking layer (5) disposed inside the stirring tank (2), characterized in that: The scraper (4) is provided with a plurality of solid lubricating waxes (41), and the scraper lip of the scraper (4) is provided with a through hole (42) for the solid lubricating waxes (41) to flow out when heated.

2. The structure of the stirring chamber of a sponge foaming machine for preventing raw materials from sticking to the wall as described in claim 1, characterized in that: A controller (8) is fixed on one side of the connecting seat (1), and a sliding plate (10) is slidably provided on one side of the connecting seat (1) via a sliding rod. A second electric telescopic rod (9) is fixed between one side of the sliding plate (10) and one side of the connecting seat (1) to drive the stirring tank (2) to move.

3. The structure of the stirring chamber of a sponge foaming machine for preventing raw materials from sticking to the wall as described in claim 2, characterized in that: A top plate (7) is slidably installed inside the connecting seat (1) via a slide rail. An electric telescopic rod (6) is fixed between the upper surface of the top plate (7) and the top wall of the connecting seat (1) to drive the top plate (7) to rise and fall.

4. The structure of the stirring chamber of a sponge foaming machine for preventing raw materials from sticking to the wall as described in claim 3, characterized in that: The stirring component (3) includes a servo motor (31) fixed to the lower surface of the top plate (7). The output end of the servo motor (31) is fixed with a connecting shaft (32), and the periphery of the connecting shaft (32) is fixed with a stirring blade (34) by bolts. The periphery of the connecting shaft (32) is fixed with a sleeve (33) by bolts. One side of the sleeve (33) is fixed to a scraper (4) by a connecting rod. The scraping lip of the scraper (4) is in contact with the inner wall of the stirring tank (2). The inner wall of the stirring tank (2) is provided with a Teflon anti-stick layer (5). An electric heating plate is fixed inside the stirring tank (2).

5. The structure of the stirring chamber of a sponge foaming machine for preventing raw materials from sticking to the wall as described in claim 1, characterized in that: The scraper (4) has at least nine cavities (43), each cavity (43) is provided with solid lubricating wax (41), and each cavity (43) is connected to one of the corresponding through holes (42).

6. The structure of the stirring chamber of a sponge foaming machine for preventing raw materials from sticking to the wall as described in claim 5, characterized in that: A glass cover plate (45) is fixed to one side of the scraper (4) by bolts.

7. The structure of the stirring chamber of a sponge foaming machine for preventing raw materials from sticking to the wall as described in claim 6, characterized in that: A sealing ring (44) is embedded between the inner side of the glass cover plate (45) and one side of the scraper (4).

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