Waterborne polyurethane self-extinction resin preparation device

Abstract

The utility model discloses a waterborne polyurethane self-extinction resin preparation device, which relates to the technical field of coating preparation and comprises a preparation box and a first driving motor, a transmission disc is arranged at the inner top end of the preparation box, an output shaft of the first driving motor is fixed with the transmission disc, and a plurality of stirring rods are vertically and fixedly mounted at the lower end of the transmission disc. A discharging assisting assembly is arranged on the lower side of the transmission disc, the circumferential side of the discharging assisting assembly is slidably attached to the inner wall of the preparation box, a sliding hole allowing the stirring rod to slidably penetrate through is formed in the discharging assisting assembly, and an auxiliary discharging driving mechanism for driving the discharging assisting assembly to be attached to the inner wall of the preparation box to slide up and down is installed on the preparation box. After mixing is completed, the discharging assisting assembly synchronously moves downwards under the attraction force of the arc-shaped magnetic attraction block, and the resin mixture attached to the inner wall of the preparation box and the surface of the stirring rod is thoroughly scraped off in the downward moving process of the discharging assisting assembly, so that the phenomenon that materials are hung on the wall is eliminated, the discharging rate of the materials is increased, material waste is reduced, and meanwhile the later cleaning burden is relieved.

Description

Technical Field

[0001] This utility model relates to the field of coating preparation technology, and in particular to an apparatus for preparing waterborne polyurethane self-matting resin. Background Technology

[0002] Paints and varnishes of all colors come in matte and glossy finishes. As people's living standards and aesthetic standards improve, the demand for matte resins is also gradually increasing. These low-gloss resins are widely used in leather finishing, wood coatings, plastic coatings, paper finishing, and other fields because their reflected light is diffuse, without glare or eye strain, giving a sense of stability and elegance.

[0003] Regarding the preparation apparatus for waterborne polyurethane self-matting resin, a search revealed a solvent-based polyurethane self-matting resin preparation apparatus with patent publication number CN214598370U. A guide rod is fixed to the top of a flow equalization plate. A filter screen, under its own weight, compresses a first spring, moving closer to the surface of the flow equalization plate. Upon contact with the plate, the guide rod inserts into the filter screen, discharging the precipitate. Simultaneously, a motor rotates, causing a cam to continuously strike a slider, which in turn drives a push rod to strike the flow equalization plate, causing it to vibrate and dislodge the precipitate from the filter screen surface. Then, a stirring rod rotates to thoroughly mix the materials and resin, thereby improving the matting effect of the resin.

[0004] However, the resin mixture has high viscosity, resulting in a significant amount of resin mixture (hereinafter referred to as material) remaining on the inner wall of its container, which is difficult to drain. Furthermore, existing preparation devices similar to those disclosed above have numerous internal stirring components, leading to material adhering to these components, resulting in considerable waste and difficult subsequent cleaning. Therefore, a waterborne polyurethane self-matting resin preparation device is proposed to address these issues. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide an apparatus for preparing waterborne polyurethane self-matting resin.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A waterborne polyurethane self-matting resin preparation device includes a preparation box with an inlet and a outlet respectively at the upper and lower ends, and an upper mounting base and a lower mounting base respectively installed at the upper and lower ends of the preparation box.

[0008] The upper end of the upper mounting base is equipped with a first drive motor, and the inner top of the preparation box is equipped with a transmission disk. The output shaft of the first drive motor passes through the upper mounting base and the top of the preparation box and is fixed to the transmission disk. Multiple stirring rods are vertically fixed at the lower end of the transmission disk.

[0009] A discharge aid assembly is provided on the lower side of the transmission disc. The circumferential side of the discharge aid assembly slides against the inner wall of the preparation box. The discharge aid assembly is provided with a sliding hole for the stirring rod to slide through. An auxiliary discharge drive mechanism is installed on the preparation box to drive the discharge aid assembly to slide up and down against the inner wall of the preparation box.

[0010] The initial position of the discharge aid component is above the horizontal plane of the feed inlet. When the discharge aid component moves down to the lowest point, the horizontal plane of the lower end of the discharge aid component is not lower than the horizontal plane of the discharge outlet.

[0011] Furthermore, the cross-sections of the multiple stirring rods are located on the same straight line, and they are staggered about the center of the drive disc.

[0012] Furthermore, the auxiliary material discharge drive mechanism includes a second drive motor, a transmission assembly, an arc-shaped magnetic block, a reciprocating lead screw, and a guide slide rod;

[0013] The second drive motor is installed on the upper end of the upper mounting base. There are two arc-shaped magnetic blocks, and the two arc-shaped magnetic blocks are symmetrically attached to the outer wall of the preparation box about the preparation box. The arc-shaped magnetic blocks are attracted to the drainage component.

[0014] There are two reciprocating lead screws, and the two reciprocating lead screws are correspondingly set with two arc-shaped magnetic blocks. They are vertically rotated and installed between the upper and lower mounting bases. A reciprocating bushing adapted to the reciprocating lead screw is installed in the middle of the arc-shaped magnetic block. The output end of the second drive motor is coaxially fixed with one of the reciprocating lead screws.

[0015] The transmission assembly is installed between two reciprocating lead screws;

[0016] Several guide slides are provided, evenly corresponding to two arc-shaped magnetic blocks, and the guide slides slide vertically through the arc-shaped magnetic blocks.

[0017] Furthermore, the transmission assembly includes a transmission chain and two transmission sprockets. The two transmission sprockets are coaxially fixed to the same side ends of the two reciprocating lead screws, and the transmission chain is connected between the two transmission sprockets.

[0018] Furthermore, the drainage aid assembly includes a drainage aid disc and a pressure reducing ring. The drainage aid disc is slidably sleeved on the outside of the stirring rod, and the pressure reducing ring is installed on the outside of the drainage aid disc through a rotary sealing connector and slides against the inner wall of the preparation box. The arc-shaped magnetic block attracts the pressure reducing ring.

[0019] The beneficial effects of this utility model are:

[0020] Through the coordinated arrangement of the transmission disc, stirring rod, auxiliary discharge assembly, and arc-shaped magnetic block, the resin mixture inside the preparation chamber is stirred and mixed by the rotating stirring rod during the preparation process. After mixing, the auxiliary discharge assembly moves downward synchronously under the attraction of the arc-shaped magnetic block. The resin mixture in the preparation chamber is discharged from the discharge port under its own gravity and the downward pressure of the auxiliary discharge assembly. During the downward movement of the auxiliary discharge assembly, the resin mixture adhering to the inner wall of the preparation chamber and the surface of the stirring rod is thoroughly scraped off, thereby eliminating material adhesion, improving the material discharge rate, reducing material waste, and alleviating the burden of subsequent cleaning. Through the coordinated arrangement of the auxiliary discharge disc and the load-reducing ring, the arc-shaped magnetic block and the load-reducing ring are attracted to each other, which can prevent the auxiliary discharge assembly from increasing the motor load due to the attraction of the arc-shaped magnetic block. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure in the prepared state in this embodiment;

[0022] Figure 2 This is a schematic diagram of the overall three-dimensional structure in the material discharge state in this embodiment;

[0023] Figure 3 This is a partial cross-sectional structural diagram of the material discharge state in this embodiment;

[0024] Figure 4 This is a schematic diagram of the structure of the transmission disc, stirring rod, and auxiliary discharge disc in this embodiment;

[0025] Figure 5 This is a schematic diagram of the auxiliary feeding tray in this embodiment;

[0026] Explanation of icon numbers:

[0027] 1. Preparation box; 101. Feed inlet; 102. Discharge outlet; 2. Upper mounting base; 3. Lower mounting base; 4. Transmission disc; 5. Stirring rod; 6. First drive motor; 7. Auxiliary discharge assembly; 701. Sliding hole; 71. Auxiliary discharge disc; 72. Reducer ring; 8. Arc-shaped magnetic block; 9. Second drive motor; 10. Transmission sprocket; 11. Transmission chain; 12. Reciprocating screw; 13. Guide slide rod. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0029] like Figure 1-Figure 5As shown, the waterborne polyurethane self-matting resin preparation device provided by this utility model includes a preparation box 1 with an inlet 101 and a outlet 102 respectively provided at the upper and lower ends. An upper mounting seat 2 and a lower mounting seat 3 are respectively installed at the upper and lower ends of the preparation box 1. The upper mounting seat 2 and the lower mounting seat 3 are both coaxially arranged with the preparation box 1, and the diameters of the upper mounting seat 2 and the lower mounting seat 3 are both larger than the diameter of the preparation box 1.

[0030] The upper mounting base 2 is equipped with a first drive motor 6, and the top of the preparation box 1 is equipped with a transmission disk 4. The output shaft of the first drive motor 6 passes through the top of the upper mounting base 2 and the preparation box 1 and is fixed to the transmission disk 4. Multiple stirring rods 5 are vertically fixed at the lower end of the transmission disk 4. A discharge aid component 7 is provided on the lower side of the transmission disk 4. The circumferential side of the discharge aid component 7 slides against the inner wall of the preparation box 1. The discharge aid component 7 is provided with a sliding hole 701 for the stirring rods 5 to slide through. An auxiliary discharge drive mechanism is installed on the preparation box 1 to drive the discharge aid component 7 to slide up and down against the inner wall of the preparation box 1.

[0031] Regarding the auxiliary material discharge drive mechanism, specifically, the auxiliary material discharge drive mechanism includes a second drive motor 9, a transmission assembly, arc-shaped magnetic blocks 8, reciprocating screws 12, and guide slide rods 13. The second drive motor 9 is installed on the upper end of the upper mounting base 2. Two arc-shaped magnetic blocks 8 are provided, and the two arc-shaped magnetic blocks 8 are symmetrically attached to the outer wall of the preparation box 1 about respect to the preparation box 1. The arc-shaped magnetic blocks 8 are attracted to the auxiliary material discharge assembly 7. Two reciprocating screws 12 are provided, and the two reciprocating screws 12 are arranged one-to-one with the two arc-shaped magnetic blocks 8, and are vertically rotatably installed between the upper mounting base 2 and the lower mounting base 3. A reciprocating sleeve adapted to the reciprocating lead screw 12 is installed in the middle of the arc-shaped magnetic block 8. The output end of the second drive motor 9 is coaxially fixed with one of the reciprocating lead screws 12. The transmission assembly is installed between the two reciprocating lead screws 12. Several guide slide rods 13 are provided and are evenly distributed to the two arc-shaped magnetic blocks 8. The guide slide rods 13 slide vertically through the arc-shaped magnetic block 8. The transmission assembly includes a transmission chain 11 and two transmission sprockets 10. The two transmission sprockets 10 are coaxially fixed to the same side end of the two reciprocating lead screws 12. The transmission chain 11 is connected between the two transmission sprockets 10.

[0032] The initial position of the discharge aid component 7 is located above the horizontal plane of the feed inlet 101. When the discharge aid component 7 moves downward to the lowest point, the horizontal plane of the lower end of the discharge aid component 7 is not lower than the horizontal plane of the discharge outlet 102.

[0033] Based on the above-mentioned structural configuration, during the preparation process, the first drive motor 6 drives the transmission disk 4 to rotate synchronously with multiple stirring rods 5. The rotating stirring rods 5 stir and mix the resin mixture inside the preparation box 1. After mixing, the second drive motor 9, in conjunction with the transmission assembly, drives two reciprocating screws 12 to rotate synchronously. This causes the arc-shaped magnetic block 8 to slide downward against the outer wall of the preparation box 1 under the limiting action of the guide slide rod 13. The discharge aid component 7 moves downward synchronously under the attraction force of the arc-shaped magnetic block 8. The resin mixture in the preparation box 1 is discharged from the discharge port 102 under its own gravity and the downward pressure of the discharge aid component 7. During the downward movement of the discharge aid component 7, the resin mixture adhering to the inner wall of the preparation box 1 and the surface of the stirring rods 5 is thoroughly scraped off, thereby eliminating the phenomenon of material hanging on the wall, improving the material discharge rate, reducing material waste, and reducing the burden of subsequent cleaning.

[0034] In this configuration, the cross-sections of multiple stirring rods 5 are located on the same straight line, and they are staggered about the center of the transmission disc 4, as shown below. Figure 5 As shown, the circumferences of the multiple stirring rods 5 are different during rotation, which can fully mix the materials and improve the matting effect of the resin.

[0035] To avoid increasing the motor load due to the attraction of the arc-shaped magnetic block 8 to the drainage component 7, the drainage component 7 includes a drainage plate 71 and a load-reducing ring 72. The drainage plate 71 is slidably sleeved on the outside of the stirring rod 5. The load-reducing ring 72 is installed on the outside of the drainage plate 71 through a rotary sealing connector and slides against the inner wall of the preparation box 1. The arc-shaped magnetic block 8 attracts the load-reducing ring 72. The rotary sealing connector adopts a conventional sealing connector in the prior art that can ensure the sealing between the two ends of the two connected structures and also meet the relative rotation between the two connected structures, such as a sealed bearing.

[0036] The working principle of this utility model is as follows: During the preparation process, the first drive motor 6 drives the transmission disk 4 to rotate synchronously with multiple stirring rods 5. The rotating stirring rods 5 stir and mix the resin mixture inside the preparation box 1. After the mixing is completed, the second drive motor 9, in conjunction with the transmission component, drives two reciprocating screws 12 to rotate synchronously. This causes the arc-shaped magnetic block 8 to slide downward against the outer wall of the preparation box 1 under the limiting action of the guide slide rod 13. The discharge aid component 7 moves downward synchronously under the attraction force of the arc-shaped magnetic block 8. The resin mixture in the preparation box 1 is discharged from the discharge port 102 under its own gravity and the downward pressure of the discharge aid component 7. During the downward movement of the discharge aid component 7, the resin mixture attached to the inner wall of the preparation box 1 and the surface of the stirring rods 5 is completely scraped off.

[0037] This utility model has been described with reference to the above-described embodiments and accompanying drawings. However, the above embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. On the contrary, modifications and equivalent provisions included in the spirit and scope of the claims are all included within the scope of this utility model.

Claims

1. An apparatus for preparing waterborne polyurethane self-matting resin, comprising a preparation box with an inlet and a outlet respectively provided at its upper and lower ends, characterized in that, The upper and lower ends of the preparation box are respectively equipped with an upper mounting base and a lower mounting base; The upper end of the upper mounting base is equipped with a first drive motor, and the top of the inner end of the preparation box is provided with a transmission disk. The output shaft of the first drive motor passes through the top of the upper mounting base and the preparation box and is fixed to the transmission disk. Multiple stirring rods are vertically fixedly installed at the lower end of the transmission disk. A discharge aid assembly is provided on the lower side of the transmission disc. The circumferential side of the discharge aid assembly slides against the inner wall of the preparation box. The discharge aid assembly is provided with a sliding hole through which the stirring rod slides. An auxiliary discharge drive mechanism is installed on the preparation box to drive the discharge aid assembly to slide up and down against the inner wall of the preparation box. The initial position of the discharge aid component is located above the horizontal plane of the feed inlet. When the discharge aid component moves downward to the lowest point, the horizontal plane of the lower end of the discharge aid component is not lower than the horizontal plane of the discharge outlet.

2. The apparatus for preparing waterborne polyurethane self-matting resin according to claim 1, characterized in that: The cross sections of the plurality of stirring rods are located on the same straight line and are staggered about the center of the transmission disc.

3. The apparatus for preparing waterborne polyurethane self-matting resin according to claim 1, characterized in that: The auxiliary discharge drive mechanism includes a second drive motor, a transmission assembly, an arc-shaped magnetic block, a reciprocating lead screw, and a guide slide rod; The second drive motor is mounted on the upper end of the upper mounting base. Two arc-shaped magnetic blocks are provided, and the two arc-shaped magnetic blocks are symmetrically attached to the outer wall of the preparation box about respect to the preparation box. The arc-shaped magnetic blocks are attracted to the drainage component. Two reciprocating lead screws are provided, and the two reciprocating lead screws are correspondingly arranged with the two arc-shaped magnetic blocks one by one. They are vertically rotatably installed between the upper mounting base and the lower mounting base. A reciprocating bushing adapted to the reciprocating lead screw is installed in the middle of the arc-shaped magnetic block. The output end of the second drive motor is coaxially fixed with one of the reciprocating lead screws. The transmission assembly is installed between the two reciprocating lead screws; Several guide slide rods are provided, evenly corresponding to two of the arc-shaped magnetic blocks, and the guide slide rods slide vertically through the arc-shaped magnetic blocks.

4. The apparatus for preparing waterborne polyurethane self-matting resin according to claim 3, characterized in that: The transmission assembly includes a transmission chain and two transmission sprockets. The two transmission sprockets are coaxially fixed to the same side ends of the two reciprocating lead screws, and the transmission chain is drivingly connected between the two transmission sprockets.

5. The apparatus for preparing waterborne polyurethane self-matting resin according to claim 3, characterized in that: The drainage aid assembly includes a drainage aid disc and a pressure relief ring. The drainage aid disc is slidably sleeved on the outside of the stirring rod. The pressure relief ring is installed on the outside of the drainage aid disc through a rotary sealing connector and slides against the inner wall of the preparation box. The arc-shaped magnetic block is attracted to the pressure relief ring.

Images