A polyurethane foam processing foaming machine

Abstract

The utility model relates to polyurethane foam plastics processing technical field, and disclose a kind of foaming machine for polyurethane foam plastics processing, including frame body and foaming tank body, the surface of the frame body one side is welded with mounting bracket.The polyurethane foam plastics processing foaming machine is set by mixing component, the raw material of injection is preliminarily sheared and emulsified by shear stirring head, break liquid group, ensure that trace component such as foaming agent disperses rapidly, first scraper and second scraper rotate closely foaming tank body, bottom scraper one and bottom scraper two rotate closely foaming tank body bottom wall, scrape adhering material on inner wall and bottom wall, reduce dead zone, let raw material in foaming tank body wide range of axial and radial circulation flow, cooperate with shear stirring head, realize uniform mixing, avoid the problem that material mixing is uneven when stirring mechanism faces high viscosity, fast reaction polyurethane raw material, it is helpful to let foam pore size more uniform, improve the quality of foam.

Description

Technical Field

[0001] This utility model relates to the field of polyurethane foam processing technology, and in particular to a foaming machine for polyurethane foam processing. Background Technology

[0002] Polyurethane foam is made by polymerizing and foaming isocyanates and hydroxyl compounds. There are various foaming methods for polyurethane foam, among which the three most commonly used foaming methods are physical foaming, chemical foaming and mechanical foaming. Mechanical foaming uses strong mechanical agitation to inject air into the resin to make it into a uniform foam, and then undergoes physical and chemical changes to make it gel.

[0003] A foaming machine for processing foamed plastics, disclosed in CN220808251U, includes a base, a processing box mounted on the upper surface of the base, a surrounding tube sleeved on the lower outer wall of the processing box, the surrounding tube being connected to an air inlet assembly, and several connecting pipes connected to the surrounding tube. Each connecting pipe is vertically arranged and has several air inlets evenly distributed on each connecting pipe, each air inlet extending into the interior of the processing box. A stirring drive assembly is installed inside the processing box. By providing the surrounding tube connected to the air inlet assembly, air can be injected into the interior of the several connecting pipes and delivered to the air inlets located at various parts of the processing box. This allows for the addition of air to the raw materials inside the processing box at multiple points, avoiding the problem of the raw materials having difficulty contacting the air and improving the uniformity of contact between the raw materials and the air.

[0004] However, this foaming machine for processing foamed plastics has the following disadvantages: 1. The mixing mechanism is relatively traditional. When dealing with high-viscosity, fast-reacting polyurethane raw materials, the materials are not mixed evenly, resulting in mixing dead zones and affecting the quality of the foam. 2. The device is an integral unit, making it difficult to disassemble and assemble quickly, which affects subsequent maintenance and repair, and makes it inconvenient to quickly replace damaged parts and reduce downtime. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The purpose of this invention is to provide a foaming machine for processing polyurethane foam, which solves the problems mentioned in the background art, such as uneven material mixing, the existence of mixing dead zones, which affect the quality of foam and make it inconvenient to quickly replace damaged parts.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a polyurethane foam processing foaming machine, comprising a frame and a foaming tank. A mounting bracket is welded to one side of the frame surface. A lifting assembly is fixedly connected to the top of the mounting bracket. A tank lid is welded to one side of the lifting assembly. The tank lid is secured to the top surface of the foaming tank. A mixing assembly is fixedly connected to the center of the top surface of the tank lid. An air inlet pipe is fixedly connected to one side of the top surface of the tank lid. A gas filter assembly is installed inside the air inlet pipe. A clamping assembly is fixedly connected to the lower surface of one side of the mounting bracket. The foaming tank is positioned in the center of the clamping assembly. A discharge pipe is provided on one side of the foaming tank.

[0009] The mixing assembly includes a second motor fixedly connected to the center of the top surface of the can lid. The output end of the second motor is fixedly connected to a stirring shaft. Two shearing stirring heads are fixedly sleeved on the surface of the stirring shaft. Stabilizers are fixedly connected to both sides of the surface of the stirring shaft. A first scraper and a second scraper are fixedly connected to one side of each of the two stabilizers. An oblique shearing plate is fixedly connected to the inner side of each of the two stabilizers.

[0010] The clamping assembly includes a fixed frame fixedly connected to the lower surface of one side of the mounting bracket. One end of the fixed frame is rotatably connected to a positive and negative threaded rod. The surface of the positive and negative threaded rod is threaded with two moving parts. One side of each of the two moving parts is fixedly connected to a left limiting half ring and a right limiting half ring, respectively. One end of the positive and negative threaded rod is fixedly connected to a handwheel.

[0011] As a further embodiment of this utility model, the first scraper and the second scraper are staggered on one side of the two stabilizers, and the shapes of the first scraper and the second scraper match the inner wall contour of the foaming tank and rotate closely against the inner wall.

[0012] As a further embodiment of this utility model, the bottom ends of the two stabilizers are respectively fixedly connected to a bottom scraper and a bottom scraper, which are adapted to the bottom wall of the foaming tank.

[0013] As a further embodiment of this utility model, the lifting assembly includes a first motor fixedly connected to the top surface of the mounting frame, and a dustproof lead screw fixedly connected to the output end of the first motor, with a lifting component threadedly connected to the surface of the dustproof lead screw.

[0014] As a further embodiment of this utility model, the gas filtration assembly includes a double-layer filter screen that is snapped into the inside of the air inlet connecting pipe, and the inside of the double-layer filter screen is filled with ultra-fine glass fiber filter paper.

[0015] As a further embodiment of this utility model, anti-slip plates are fixedly connected to the inner walls of both the left limiting half-ring and the right limiting half-ring, and the anti-slip plates are made of rubber.

[0016] As a further embodiment of this utility model, a control device is fixedly connected to the right side of the mounting bracket, and the control device is used to control the second motor and the first motor.

[0017] As a further embodiment of this utility model, three support legs are fixedly connected to the outer surface of the foaming tank, and the bottom end of each support leg is fixedly connected to a universal wheel with a brake pad.

[0018] (III) Beneficial Effects

[0019] This utility model provides a foaming machine for processing polyurethane foam, which has the following beneficial effects:

[0020] 1. This polyurethane foam processing foaming machine, through the setting of the mixing components, allows for the following operation: after the material is placed into the foaming tank and the tank lid is closed, the second motor is started, driving the stirring shaft to rotate. The shearing and stirring head performs preliminary shearing and emulsification on the injected raw material, breaking up liquid clumps and ensuring rapid dispersion of trace components such as the foaming agent. The first and second scrapers rotate close to the foaming tank, while the bottom scrapers one and two rotate close to the bottom wall of the foaming tank, scraping off the adhering material on the inner and bottom walls, reducing dead zones, and allowing the raw material to circulate widely in the axial and radial directions within the foaming tank. In conjunction with the shearing and stirring head, uniform mixing is achieved, avoiding the problem of uneven material mixing and dead zones that occur when the stirring mechanism encounters high-viscosity, fast-reacting polyurethane raw materials. This helps to make the foam pore size more uniform and improve the quality of the foam.

[0021] 2. This polyurethane foam processing foaming machine, through the configuration of gas filter components, clamping components, and a can lid, enables modular assembly, facilitating later maintenance. During operation, rotating the handwheel allows the left and right limit half-rings to move away from or towards each other, clamping or separating the foaming tank. The lifting component allows the can lid to be separated from the foaming tank, facilitating equipment maintenance and cleaning. Furthermore, the gas filter components are detachable for easy replacement and maintenance, enabling the foaming machine to be quickly disassembled and assembled. This avoids the difficulties in quick disassembly and assembly that would otherwise hinder later maintenance and repair due to its monolithic design, and facilitates rapid replacement of damaged parts, reducing downtime. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the lifting component structure of this utility model;

[0024] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4This is a schematic diagram of the clamping component structure of this utility model;

[0026] Figure 5 This is a schematic diagram of the hybrid component structure of this utility model.

[0027] In the diagram: 1. Frame; 2. Foaming tank; 3. Mounting frame; 4. Lifting assembly; 401. First motor; 402. Dustproof lead screw; 403. Lifting component; 5. Tank lid; 6. Mixing assembly; 601. Second motor; 602. Stirring shaft; 603. Shearing stirring head; 604. Stabilizing frame; 605. First scraper; 606. Second scraper; 607. Angled shearing plate; 7. Air inlet connection pipe; 8. Gas filter assembly Components; 801, Double-layer filter screen; 802, Ultra-fine glass fiber filter paper; 9, Clamping assembly; 901, Fixing frame; 902, Positive and negative threaded rod; 903, Moving component; 904, Left limiting half ring; 905, Right limiting half ring; 906, Handwheel; 10, Bottom scraper one; 11, Bottom scraper two; 12, Anti-slip plate; 13, Control device; 14, Support leg; 15, Universal wheel with brake pad; 16, Discharge pipe. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0029] Please see Figures 1 to 5 This utility model provides a technical solution: a foaming machine for processing polyurethane foam, comprising a frame 1 and a foaming tank 2. A mounting frame 3 is welded to one side of the surface of the frame 1. A lifting assembly 4 is fixedly connected to the top of the mounting frame 3. A tank cover 5 is welded to one side of the lifting assembly 4. The tank cover 5 is secured to the top surface of the foaming tank 2. A mixing assembly 6 is fixedly connected to the middle of the top surface of the tank cover 5. An air inlet pipe 7 is fixedly connected to one side of the top surface of the tank cover 5. A gas filter assembly 8 is installed inside the air inlet pipe 7. A clamping assembly 9 is fixedly connected to the lower surface of one side of the mounting frame 3. The foaming tank 2 is positioned in the middle of the clamping assembly 9. A discharge pipe 16 is provided on one side of the foaming tank 2.

[0030] The mixing component 6 includes a second motor 601 fixedly connected to the center of the top surface of the tank cover 5. A stirring shaft 602 is fixedly connected to the output end of the second motor 601. Two shearing and stirring heads 603 are fixedly sleeved on the surface of the stirring shaft 602. Stabilizers 604 are fixedly connected to both sides of the surface of the stirring shaft 602. A first scraper 605 and a second scraper 606 are fixedly connected to one side of each stabilizer 604, respectively. An inclined shearing plate 607 is fixedly connected to the inner side of each stabilizer 604. With the mixing component 6 in place, when using the material, after placing it into the foaming tank 2, the tank cover 5 is closed, and the second motor 601 is started, causing the stirring shaft 602 to rotate and shear and stir. The mixing head 603 performs preliminary shearing and emulsification on the injected raw materials, breaking up liquid clumps and ensuring rapid dispersion of trace components such as foaming agents. The first scraper 605 and the second scraper 606 rotate closely against the foaming tank 2, while the bottom scraper 10 and the bottom scraper 21 rotate closely against the bottom wall of the foaming tank 2, scraping off the adhering materials on the inner and bottom walls, reducing dead zones, and allowing the raw materials to circulate in a wide range of axial and radial directions within the foaming tank 2. In conjunction with the shearing mixing head 603, uniform mixing is achieved, avoiding the problem of uneven material mixing and dead zones when the mixing mechanism faces high-viscosity, fast-reacting polyurethane raw materials. This helps to make the foam pore size more uniform and improve the quality of the foam.

[0031] The clamping assembly 9 includes a fixed frame 901 fixedly connected to the lower surface of one side of the mounting bracket 3. One end of the fixed frame 901 is rotatably connected to a threaded rod 902. Two moving parts 903 are threadedly connected to the surface of the threaded rod 902. A left limiting half-ring 904 and a right limiting half-ring 905 are fixedly connected to one side of each of the two moving parts 903, respectively. A handwheel 906 is fixedly connected to one end of the threaded rod 902. Through the arrangement of the gas filter assembly 8, the clamping assembly 9, and the can lid 5, the foaming machine can be modularly assembled, facilitating later maintenance. The purpose is to allow the left and right limiting semi-rings 904 and 905 to move away from or near each other by rotating the handwheel 906, thus clamping or separating the foaming tank 2. The lifting assembly 4 can be used to separate the tank cover 5 from the foaming tank 2, facilitating equipment maintenance and cleaning. In addition, the gas filter assembly 8 can be disassembled for easy replacement and maintenance, thereby enabling the foaming machine to be quickly disassembled and assembled. This avoids the difficulty in quick disassembly and assembly due to its integral design, which would affect later maintenance and repair. It also helps to quickly replace damaged parts and reduce downtime.

[0032] The first scraper 605 and the second scraper 606 are staggered on one side of the two stabilizers 604. The shape of the first scraper 605 and the second scraper 606 matches the inner wall contour of the foaming tank 2. They rotate close to the inner wall. The arrangement of the first scraper 605 and the second scraper 606 plays the role of scraping off the adhering material on the inner wall and reducing dead zones.

[0033] The bottom ends of the two stabilizers 604 are respectively fixedly connected to bottom scraper 10 and bottom scraper 21. Bottom scraper 10 and bottom scraper 211 are adapted to the bottom wall of the foaming tank 2. The bottom scraper 10 and bottom scraper 211 serve to scrape off the raw material on the bottom wall.

[0034] The lifting assembly 4 includes a first motor 401 fixedly connected to the top surface of the mounting frame 3. A dustproof screw 402 is fixedly connected to the output end of the first motor 401. A lifting component 403 is threadedly connected to the surface of the dustproof screw 402. The lifting assembly 4 facilitates the opening of the can lid 5.

[0035] The gas filter assembly 8 includes a double-layer filter screen 801 that is snapped into the air inlet connecting pipe 7. The double-layer filter screen 801 is filled with ultra-fine glass fiber filter paper 802. By setting the gas filter assembly 8, impurities in the gas are filtered to avoid impurities affecting the foaming effect and to ensure the stability of foaming.

[0036] The inner walls of the left limiting semi-ring 904 and the right limiting semi-ring 905 are both fixedly connected with anti-slip plates 12. The anti-slip plates 12 are made of rubber and play an anti-slip role through their setting.

[0037] A control device 13 is fixedly connected to the right side of the mounting bracket 3. The control device 13 is used to control the second motor 601 and the first motor 401. The control device 13 plays the role of controlling the opening and closing of each device.

[0038] Three support legs 14 are fixedly connected to the outer surface of the foaming tank 2. The bottom of the support legs 14 is fixedly connected to a universal wheel 15 with a brake pad. The support legs 14 and the universal wheel 15 with a brake pad facilitate the movement of the foaming tank 2.

[0039] In this invention, the working steps of the device are as follows:

[0040] First step: When using, after putting the material into the foaming tank 2, close the tank lid 5, start the second motor 601, which rotates the stirring shaft 602. The shearing and stirring head 603 performs preliminary shearing and emulsification on the injected raw material, breaks up liquid clumps, and ensures that trace components such as foaming agent are quickly dispersed. The first scraper 605 and the second scraper 606 rotate close to the foaming tank 2, and the bottom scraper 10 and the bottom scraper 21 rotate close to the bottom wall of the foaming tank 2, scraping off the material adhering to the inner wall and bottom wall, reducing dead zones, and allowing the raw material to circulate in a large range of axial and radial flow in the foaming tank 2, in conjunction with the shearing and stirring head 603.

[0041] The second step: the air inlet connection pipe 7 is connected to the pipe of the external air supply equipment, and the double-layer filter screen 801 and the ultra-fine glass fiber filter paper 802 filter impurities in the air.

[0042] The third step: During use, rotating the handwheel 906 allows the left limiting half-ring 904 and the right limiting half-ring 905 to move away from or near each other, clamping or separating the foaming tank 2. The lifting assembly 4 allows the tank cover 5 to separate from the foaming tank 2, facilitating maintenance and cleaning of the equipment. It should be noted that the equipment structure and accompanying drawings of this utility model mainly describe the principle of the utility model. The technical details of the device's power mechanism, power supply system, and control system are not fully described. However, those skilled in the art, understanding the principle of the above utility model, can clearly understand the specifics of its power mechanism, power supply system, and control system. The control method described in the application document is automatic control via a controller, and the controller's control circuit can be implemented through simple programming by those skilled in the art.

[0043] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A foaming machine for processing polyurethane foam, comprising a frame (1) and a foaming tank (2), characterized in that: A mounting bracket (3) is welded to one side of the surface of the frame (1). A lifting assembly (4) is fixedly connected to the top of the mounting bracket (3). A can lid (5) is welded to one side of the lifting assembly (4). The can lid (5) is clipped onto the top surface of the foaming tank (2). A mixing assembly (6) is fixedly connected to the middle of the top surface of the can lid (5). An air inlet connecting pipe (7) is fixedly connected to one side of the top surface of the can lid (5). A gas filter assembly (8) is provided inside the air inlet connecting pipe (7). A clamping assembly (9) is fixedly connected to the lower surface of one side of the mounting bracket (3). The foaming tank (2) is located in the middle of the clamping assembly (9). A discharge pipe (16) is provided on one side of the foaming tank (2). The mixing component (6) includes a second motor (601) fixedly connected to the middle of the top surface of the can lid (5). The output end of the second motor (601) is fixedly connected to a stirring shaft (602). Two shearing stirring heads (603) are fixedly sleeved on the surface of the stirring shaft (602). Stabilizers (604) are fixedly connected to both sides of the surface of the stirring shaft (602). A first scraper (605) and a second scraper (606) are fixedly connected to one side of each of the two stabilizers (604). An oblique shearing plate (607) is fixedly connected to the inner side of each of the two stabilizers (604). The clamping assembly (9) includes a fixed frame (901) fixedly connected to the lower surface of one side of the mounting bracket (3). One end of the fixed frame (901) is rotatably connected to a positive and negative threaded rod (902). The surface of the positive and negative threaded rod (902) is threadedly connected to two moving parts (903). One side of each of the two moving parts (903) is fixedly connected to a left limiting half ring (904) and a right limiting half ring (905). One end of the positive and negative threaded rod (902) is fixedly connected to a handwheel (906).

2. The foaming machine for polyurethane foam processing according to claim 1, characterized in that: The first scraper (605) and the second scraper (606) are staggered on one side of the two stabilizers (604). The shapes of the first scraper (605) and the second scraper (606) match the inner wall contour of the foaming tank (2) and rotate closely against the inner wall.

3. The foaming machine for polyurethane foam processing according to claim 1, characterized in that: The bottom ends of the two stabilizers (604) are respectively fixedly connected to a bottom scraper one (10) and a bottom scraper two (11), which are adapted to the bottom wall of the foaming tank (2).

4. The foaming machine for processing polyurethane foam plastics according to claim 1, characterized in that: The lifting assembly (4) includes a first motor (401) fixedly connected to the top surface of the mounting frame (3), and a dustproof screw (402) fixedly connected to the output end of the first motor (401), and a lifting component (403) threadedly connected to the surface of the dustproof screw (402).

5. A foaming machine for processing polyurethane foam plastics according to claim 1, characterized in that: The gas filtration assembly (8) includes a double-layer filter screen (801) snapped into the inside of the air inlet connecting pipe (7), and the inside of the double-layer filter screen (801) is filled with ultra-fine glass fiber filter paper (802).

6. The foaming machine for processing polyurethane foam plastics according to claim 1, characterized in that: The inner walls of the left limiting half ring (904) and the right limiting half ring (905) are both fixedly connected with anti-slip plates (12), and the anti-slip plates (12) are made of rubber.

7. A foaming machine for processing polyurethane foam plastics according to claim 1, characterized in that: A control device (13) is fixedly connected to the right side of the mounting bracket (3). The control device (13) is used to control the second motor (601) and the first motor (401).

8. A foaming machine for processing polyurethane foam plastics according to claim 1, characterized in that: The outer surface of the foaming tank (2) is fixedly connected to three support legs (14), and the bottom end of the support legs (14) is fixedly connected to a universal wheel (15) with a brake pad.

Images