Two-component polyurethane adhesive automatic mixing and dispensing apparatus

Abstract

The utility model discloses a two -component polyurethane adhesive automatic mixing perfusion equipment relates to perfusion equipment technical field, including mixing barrel and mixing subassembly, mixing barrel: the upper end joint has the sealing cover, the upper end of sealing cover is equipped with the mounting hole, the inside mounting of mounting hole has liquid level sensor, the lower end mounting of mixing barrel inside has perfusion subassembly, the barrel wall of mixing barrel installs heating assembly, the circumferential surface of mixing barrel installs fixed component, fixed component links with sealing cover, mixing subassembly: contain fixed barrel, mounting bracket, motor, pivot and stirring frame, the upper end fixed of sealing cover has fixed barrel, the upper end fixed of fixed barrel has mounting bracket, the inside mounting of mounting bracket has motor, the middle part of mixing barrel upper end is equipped with the opening, can realize efficient mixing, avoid mixing dead angle, facilitate quick disassembly and clean and accurate control perfusion.

Description

Technical Field

[0001] This utility model relates to the field of injection equipment technology, specifically to an automatic mixing and injection equipment for two-component polyurethane adhesives. Background Technology

[0002] Two-component polyurethane adhesives are increasingly widely used as high-performance adhesive materials. These adhesives typically consist of two separately stored chemical components: one is a polyester or polyether resin containing terminal hydroxyl groups, and the other is a polyisocyanate curing agent. Before use, the two components must be precisely mixed in a specific ratio. Cross-linking and curing are achieved through the chemical reaction between the isocyanate groups and hydroxyl groups, ultimately forming a polymer with a three-dimensional network structure. Currently, in the mixing and filling process of two-component polyurethane adhesives, traditional mixing and filling equipment is often simple in structure and single in function, making it difficult to meet the needs of high-quality production. In terms of mixing, many devices rely on a single stirring method, resulting in low mixing efficiency and the presence of mixing dead zones. At the same time, the maintainability and operability of the equipment are also shortcomings. After the polyurethane adhesive has cured, it is difficult to clean. Traditional equipment is inconvenient to clean and difficult to disassemble, which not only increases maintenance costs but also easily causes cross-contamination or pipeline blockage due to residues. To address these issues, we propose an automatic mixing and filling device for two-component polyurethane adhesives. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide an automatic mixing and pouring equipment for two-component polyurethane adhesives, which can achieve efficient mixing, avoid mixing dead zones, facilitate quick disassembly and cleaning, and accurately control pouring, and can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an automatic mixing and dispensing equipment for two-component polyurethane adhesives, comprising a mixing tank and a mixing assembly; Mixing tank: A sealing cap is snapped onto the upper end, and an installation hole is opened at the upper end of the sealing cap. A liquid level sensor is installed inside the installation hole. A filling assembly is installed at the lower end of the mixing tank. A heating assembly is installed inside the tank wall. A fixing assembly is installed on the circumferential surface of the mixing tank. The fixing assembly is connected to the sealing cap. Mixing assembly: includes a fixed bucket, a mounting frame, a motor, a rotating shaft, and a mixing frame. The fixed bucket is fixed to the upper end of the sealing cover, and the mounting frame is fixed to the upper end of the fixed bucket. The motor is installed inside the mounting frame. An opening is provided in the middle of the upper end of the mixing bucket, and a rotating shaft is provided inside the opening. The upper end of the rotating shaft is rotatably connected to the lower end of the sealing cover. The output shaft of the motor is fixed to the upper end of the rotating shaft. Evenly distributed mixing frames are fixed on the circumference of the rotating shaft. All the mixing frames are located inside the mixing bucket, and a mixing component is installed inside the mixing frame. The lower end of the rotating shaft is connected to the filling component. By setting up the mixing assembly, the raw materials required for the production of two-component polyurethane adhesive entering the mixing bucket are initially mixed. Wherein: the liquid level sensor is bidirectionally electrically connected to an external PLC controller, and the input terminal of the motor is electrically connected to the output terminal of the external PLC controller.

[0005] Furthermore, the stirring assembly includes a connecting shaft, a first gear ring, a barrier ring, a stirring plate, a fixing frame, and a second gear ring. A rotating hole is provided on the upper side of the stirring frame, and the connecting shaft is rotatably connected inside the rotating hole. Evenly distributed stirring plates are fixed on the circumferential surface of the connecting shaft. The first gear ring and the barrier ring are rotatably connected on the circumferential surface of the rotating shaft, and the first gear ring and the barrier ring are fixed together. The first gear ring and the barrier ring are located inside the opening in the middle of the sealing cover. All connecting shafts are located within the gap between the barrier ring and the sealing cover. Two corresponding fixing frames are fixed to the upper end of the first gear ring, and the two fixing frames are fixed inside the fixing barrel. The second gear ring is fixed to the upper end of the circumferential surface of the connecting shaft, and all second gear rings mesh with the first gear ring. By setting the stirring assembly in conjunction with the mixing assembly, the raw materials required for producing the two-component polyurethane adhesive entering the mixing barrel are further stirred and mixed.

[0006] Furthermore, the heating assembly includes an electric heating element and a temperature sensor. The mixing barrel has uniformly distributed mounting cavities inside its wall, and the electric heating element is installed inside each mounting cavity. The mixing barrel also has a connecting cavity inside its wall, and the temperature sensor is installed inside the connecting cavity. The temperature sensor is bidirectionally electrically connected to an external PLC controller. The input end of the electric heating element is electrically connected to the output end of the external PLC controller. By setting up the heating assembly, the raw materials can be prevented from clumping due to excessively low temperatures.

[0007] Furthermore, the filling assembly includes a spiral feeding pipe, a filling pipe, a connecting flange ring, and a solenoid valve. The lower end of the rotating shaft is fixed with a spiral feeding pipe, and the lower end of the mixing tank is fixed with a discharge pipe. The spiral feeding pipe is located inside the discharge pipe, and the lower end of the discharge pipe is connected to the filling pipe through the connecting flange ring. A solenoid valve is installed on the circumferential surface of the filling pipe. The input end of the solenoid valve is electrically connected to the output end of an external PLC controller. Filling is facilitated by setting a filling column.

[0008] Furthermore, the fixing assembly includes a fixing block, a hydraulic rod, a turntable, fixing strips, and a limiting rod. Three corresponding fixing blocks are fixed on the circumferential surface of the mixing tank. A hydraulic rod is installed on the lower side of the fixing block. A turntable is fixed on the piston rod of the hydraulic rod. A fixing strip is rotatably connected to the upper end of the turntable. Three corresponding slots are opened at the upper end of the sealing cover. The fixing strip is engaged in the corresponding slot. A limiting rod is fixed on the upper side of the fixing block. A limiting hole is opened on the upper side of the fixing strip. The limiting rod is slidably connected in the limiting hole. The input end of the hydraulic rod is electrically connected to the output end of an external PLC controller. The sealing cover is fixed by setting the fixing assembly. When cleaning is required, the three hydraulic rods can be controlled to make the three fixing strips disengage from the three slots upwards. At the same time, the three limiting rods disengage from the three limiting holes. Then, the three fixing strips are rotated away from the sealing cover to quickly remove the sealing cover, and then cleaning can be carried out quickly.

[0009] Furthermore, an injection pipe is fixed inside the injection hole provided on the circumferential surface of the mixing barrel, and a sealing cover is threaded to the upper end of the injection pipe, so that the material enters the interior of the mixing barrel through the injection pipe.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This automatic mixing and dispensing equipment for two-component polyurethane adhesives has the following advantages: 1. By setting up the synergistic effect of the mixing component and the stirring component, the raw materials are efficiently and uniformly mixed. The motor-driven rotating shaft in the mixing component drives the stirring frame to perform initial stirring, while the stirring component uses gear transmission to make the stirring plate on the connecting shaft rotate in the opposite direction or additionally, thereby eliminating mixing dead corners and ensuring that the components of the two-component polyurethane adhesive are in full contact during the reaction process, improving the mixing quality and reaction efficiency, and avoiding the problem of uneven curing or performance degradation caused by uneven stirring in traditional equipment. 2. By setting a fixing component, the sealing cover can be quickly unlocked and removed by hydraulic drive. This design greatly simplifies the cleaning and maintenance process. Users can easily remove the sealing cover for thorough cleaning after filling, effectively preventing pipeline blockage or cross-contamination caused by solidified residues, reducing daily maintenance costs and time, and enhancing the practicality and service life of the equipment. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the front structure of this utility model; Figure 2 This is a front sectional view of the present invention; Figure 3 This utility model Figure 3 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the fixing component structure of this utility model.

[0012] In the diagram: 1 Mixing tank, 2 Sealing cover, 3 Liquid level sensor, 4 Mixing assembly, 41 Fixed tank, 42 ​​Mounting bracket, 43 Motor, 44 Rotating shaft, 45 Mixing frame, 5 Mixing assembly, 51 Connecting shaft, 52 First gear ring, 53 Barrier ring, 54 Mixing plate, 55 Fixed bracket, 56 Second gear ring, 6 Heating assembly, 61 Electric heating tube, 62 Temperature sensor, 7 Injection assembly, 71 Spiral feed pipe, 72 Injection pipe, 73 Connecting flange ring, 74 Solenoid valve, 8 Fixed assembly, 81 Fixed block, 82 Hydraulic rod, 83 Turntable, 84 Fixed strip, 85 Limiting rod, 9 Injection pipe, 10 Sealing cover. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figure 1-4 This embodiment provides a technical solution: an automatic mixing and dispensing device for two-component polyurethane adhesive, including a mixing tank 1 and a mixing component 4; Mixing tank 1: A sealing cap 2 is snapped onto the upper end. The upper end of the sealing cap 2 has an installation hole, inside which a liquid level sensor 3 is installed. A filling assembly 7 is installed at the lower end inside the mixing tank 1. A heating assembly 6 is installed inside the tank wall of the mixing tank 1. A fixing assembly 8 is installed on the circumference of the mixing tank 1, and the fixing assembly 8 is connected to the sealing cap 2. The heating assembly 6 includes a heating element 61 and a temperature sensor 62. Evenly distributed mounting cavities are formed inside the tank wall of the mixing tank 1, inside which the heating element 61 is installed. A connecting cavity is provided inside the tank wall of the mixing tank 1, inside which a temperature sensor is installed. 62. Temperature sensor 62 is bidirectionally electrically connected to an external PLC controller. The input end of heating element 61 is electrically connected to the output end of the external PLC controller. The filling assembly 7 includes a spiral feeding pipe 71, a filling pipe 72, a connecting flange ring 73, and a solenoid valve 74. The lower end of the rotating shaft 44 is fixed with the spiral feeding pipe 71. The lower end of the mixing tank 1 is fixed with a discharge pipe. The spiral feeding pipe 71 is located inside the discharge pipe. The lower end of the discharge pipe is connected to the filling pipe 72 through the connecting flange ring 73. A solenoid valve 74 is installed on the circumferential surface of the filling pipe 72. The input end of the solenoid valve 74 is electrically connected to the external PLC controller. The output of the LC controller includes a fixing component 8 comprising a fixing block 81, a hydraulic rod 82, a turntable 83, a fixing strip 84, and a limit rod 85. Three corresponding fixing blocks 81 are fixed on the circumferential surface of the mixing tank 1. A hydraulic rod 82 is mounted on the lower side of the fixing block 81. A turntable 83 is fixed to the piston rod of the hydraulic rod 82. A fixing strip 84 is rotatably connected to the upper end of the turntable 83. Three corresponding slots are provided on the upper end of the sealing cover 2. The fixing strip 84 is engaged with the corresponding slot. A limit rod 85 is fixed on the upper side of the fixing block 81, and a limit hole is provided on the upper side of the fixing strip 84. The sliding connection is inside the limiting hole. The input end of the hydraulic rod 82 is electrically connected to the output end of the external PLC controller. The sealing cover 2 is fixed by the fixing component 8. When cleaning is required, the three hydraulic rods 82 can be controlled to make the three fixing strips 84 disengage from the three slots, and at the same time, the three limiting rods 85 disengage from the three limiting holes. Then, the three fixing strips 84 are rotated away from the sealing cover 2 to quickly remove the sealing cover 2, and then cleaning can be carried out quickly. The filling column 7 is set to facilitate filling. The heating component 6 can prevent the raw materials from clumping due to low temperature. Mixing assembly 4 includes a fixed bucket 41, a mounting frame 42, a motor 43, a rotating shaft 44, and a mixing frame 45. The fixed bucket 41 is fixed to the upper end of the sealing cover 2, and the mounting frame 42 is fixed to the upper end of the fixed bucket 41. The motor 43 is installed inside the mounting frame 42. An opening is provided in the middle of the upper end of the mixing bucket 1, and a rotating shaft 44 is installed inside the opening. The upper end of the rotating shaft 44 is rotatably connected to the lower end of the sealing cover 2. The output shaft of the motor 43 is fixed to the upper end of the rotating shaft 44. Evenly distributed mixing frames 45 are fixed on the circumference of the rotating shaft 44. All mixing frames 45 are located inside the mixing bucket 1. A mixing assembly 5 is installed inside the mixing frames 45. The lower end of the rotating shaft 44 is connected to the filling assembly 7. The mixing assembly 5 includes a connecting shaft 51, a first gear ring 52, a barrier ring 53, a mixing plate 54, a fixed frame 55, and a second gear ring 56. A rotating hole is provided on the upper side of the mixing frame 45, and the connecting shaft 51 is rotatably connected inside the rotating hole. A uniformly distributed stirring plate 54 is fixed on the circumferential surface. A first gear ring 52 and a barrier ring 53 are rotatably connected to the circumferential surface of the rotating shaft 44. The first gear ring 52 and the barrier ring 53 are fixed together and located inside the opening in the middle of the sealing cover 2. All connecting shafts 51 are located in the gap between the barrier ring 53 and the sealing cover 2. Two corresponding fixing brackets 55 are fixed at the upper end of the first gear ring 52. The two fixing brackets 55 are fixed inside the fixing barrel 41. A second gear ring 56 is fixed at the upper end of the circumferential surface of the connecting shaft 51. All second gear rings 56 mesh with the first gear ring 52. By setting the stirring assembly 5 in conjunction with the mixing assembly 4, the raw materials required for producing two-component polyurethane adhesive entering the mixing barrel 1 are further stirred and mixed. By setting the mixing assembly 4, the raw materials required for producing two-component polyurethane adhesive entering the mixing barrel 1 are initially stirred and mixed. Among them, the liquid level sensor 3 is bidirectionally electrically connected to the external PLC controller, and the input terminal of the motor 43 is electrically connected to the output terminal of the external PLC controller.

[0015] Among them, the injection hole on the circumferential surface of the mixing tank 1 is fixed with an injection pipe 9, and the upper end of the injection pipe 9 is threaded with a sealing cover 10. In principle, the material enters the interior of the mixing tank 1 through the injection pipe 9.

[0016] The working principle of the automatic mixing and dispensing equipment for two-component polyurethane adhesives provided by this utility model is as follows: First, the raw material is injected into the mixing tank 1 through the injection pipe 9. The liquid level sensor 3 monitors the liquid level in the tank in real time and feeds the information back to the external PLC controller to ensure that the feeding amount is controllable. After the feeding is completed, the PLC controller controls the motor 43 to run, driving the rotating shaft 44 to rotate, which drives the stirring frame 45 to perform preliminary mixing in the mixing tank 1. At the same time, the stirring component 5 starts to work: Since the first gear ring 52 is fixed inside the fixed tank 41 by the fixing bracket 55 and remains stationary, when the rotating shaft 44 rotates, the meshing relationship between the second gear ring 56 and the first gear ring 52 forces the connecting shaft 51 to rotate in the rotating hole of the stirring frame 45, thereby driving the stirring plate 54 to perform secondary intensified stirring of the raw material, effectively eliminating mixing dead corners and improving uniformity. During this process, the heating component 6 heats the wall of the mixing tank 1 through the electric heating tube 61. The temperature sensor 62 monitors the temperature and feeds it back to the PLC controller to dynamically adjust the heating intensity and prevent the raw materials from clumping due to low temperature, which would affect the mixing quality. After mixing is completed, the filling component 7 is started, the PLC controller opens the solenoid valve 74, and at the same time, the spiral feeding pipe 71 at the lower end of the rotating shaft 44 rotates with the rotating shaft, pushing the material from the discharge pipe at the bottom of the mixing tank 1 to the filling pipe 72, realizing a precise and controllable filling operation. In addition, the fixing component 8 drives the fixing strip 84 to engage with the slot of the sealing cover 2 through the hydraulic rod 82 to ensure the sealing performance of the equipment during operation. When maintenance or cleaning is required, the PLC controls the hydraulic rod 82 to move, so that the fixing strip 84 disengages from the slot and rotates, which facilitates quick disassembly of the sealing cover 2 and avoids residue from causing blockage or contamination.

[0017] It is worth noting that the external PLC controller disclosed in the above embodiments is specifically a Siemens S7-200. The liquid level sensor 3, temperature sensor 62, motor 43, heating element 61 and solenoid valve 74 can be freely configured according to the actual application scenario. The external PLC controller controls the operation of motor 43, heating element 61 and solenoid valve 74 using methods commonly used in the prior art.

[0018] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. Automatic mixing and dispensing equipment for two-component polyurethane adhesives, characterized in that: Includes a mixing tank (1) and a mixing assembly (4); Mixing tank (1): A sealing cap (2) is snapped onto the upper end. An installation hole is provided at the upper end of the sealing cap (2). A liquid level sensor (3) is installed inside the installation hole. A filling assembly (7) is installed at the lower end inside the mixing tank (1). A heating assembly (6) is installed inside the tank wall of the mixing tank (1). A fixing assembly (8) is installed on the circumferential surface of the mixing tank (1). The fixing assembly (8) is connected to the sealing cap (2). Mixing assembly (4): includes a fixed bucket (41), a mounting frame (42), a motor (43), a rotating shaft (44), and a stirring frame (45). The upper end of the sealing cover (2) is fixed with the fixed bucket (41), the upper end of the fixed bucket (41) is fixed with the mounting frame (42), the motor (43) is installed inside the mounting frame (42), the middle part of the upper end of the mixing bucket (1) is opened, the rotating shaft (44) is installed inside the opening, the upper end of the rotating shaft (44) is rotatably connected to the lower end of the sealing cover (2), the output shaft of the motor (43) is fixed to the upper end of the rotating shaft (44), the circumferential surface of the rotating shaft (44) is fixed with evenly distributed stirring frames (45), all the stirring frames (45) are located inside the mixing bucket (1), the stirring assembly (5) is installed inside the stirring frame (45), and the lower end of the rotating shaft (44) is connected to the pouring assembly (7). Wherein: the liquid level sensor (3) is bidirectionally electrically connected to the external PLC controller, and the input end of the motor (43) is electrically connected to the output end of the external PLC controller.

2. The two-component polyurethane adhesive automatic mixing and dispensing apparatus according to claim 1, characterized in that: The stirring assembly (5) includes a connecting shaft (51), a first gear ring (52), a barrier ring (53), a stirring plate (54), a fixing frame (55), and a second gear ring (56). A rotating hole is provided on the upper side of the stirring frame (45), and the connecting shaft (51) is rotatably connected inside the rotating hole. Evenly distributed stirring plates (54) are fixed on the circumferential surface of the connecting shaft (51). The first gear ring (52) and the barrier ring (53) are rotatably connected on the circumferential surface of the rotating shaft (44). The first gear ring (52) and the barrier ring (53) are fixed together. The first gear ring (52) and the barrier ring (53) are located inside the opening in the middle of the sealing cover (2). All the connecting shafts (51) are located in the gap between the barrier ring (53) and the sealing cover (2). The upper end of the first gear ring (52) is fixed with two corresponding fixing brackets (55). The two fixing brackets (55) are fixed inside the fixing barrel (41). The upper end of the circumferential surface of the connecting shaft (51) is fixed with a second gear ring (56). All the second gear rings (56) mesh with the first gear ring (52).

3. The two-component polyurethane adhesive automatic mixing and dispensing apparatus according to claim 1, characterized in that: The heating assembly (6) includes an electric heating tube (61) and a temperature sensor (62). The mixing tank (1) has uniformly distributed mounting cavities in its wall. The electric heating tube (61) is installed inside the mounting cavity. The mixing tank (1) has a connecting cavity in its wall. The temperature sensor (62) is installed inside the connecting cavity. The temperature sensor (62) is bidirectionally electrically connected to an external PLC controller. The input end of the electric heating tube (61) is electrically connected to the output end of the external PLC controller.

4. The two-component polyurethane adhesive automatic mixing and dispensing apparatus according to claim 1, characterized in that: The filling assembly (7) includes a spiral feeding pipe (71), a filling pipe (72), a connecting flange ring (73), and a solenoid valve (74). The lower end of the rotating shaft (44) is fixed with the spiral feeding pipe (71), and the lower end of the mixing tank (1) is fixed with a discharge pipe. The spiral feeding pipe (71) is located inside the discharge pipe. The lower end of the discharge pipe is connected to the filling pipe (72) through the connecting flange ring (73). A solenoid valve (74) is installed on the circumferential surface of the filling pipe (72). The input end of the solenoid valve (74) is electrically connected to the output end of an external PLC controller.

5. The two-component polyurethane adhesive automatic mixing and dispensing apparatus according to claim 1, characterized in that: The fixing component (8) includes a fixing block (81), a hydraulic rod (82), a turntable (83), a fixing strip (84), and a limiting rod (85). Three corresponding fixing blocks (81) are fixed on the circumferential surface of the mixing tank (1). A hydraulic rod (82) is installed on the lower side of the fixing block (81). A turntable (83) is fixed on the piston rod of the hydraulic rod (82). A fixing strip (84) is rotatably connected to the upper end of the turntable (83). Three corresponding slots are opened at the upper end of the sealing cover (2). The fixing strip (84) is snapped into the inside of the corresponding slot. A limiting rod (85) is fixed on the upper side of the fixing block (81). A limiting hole is opened on the upper side of the fixing strip (84). The limiting rod (85) is slidably connected inside the limiting hole. The input end of the hydraulic rod (82) is electrically connected to the output end of an external PLC controller.

6. The automatic mixing and dispensing equipment for two-component polyurethane adhesives according to claim 1, characterized in that: The mixing barrel (1) has an injection hole on its circumference with an injection pipe (9) fixed inside. The upper end of the injection pipe (9) is threaded with a sealing cover (10).

Images