Feeding tool for color matching of waterborne polyurethane coating

Abstract

The utility model belongs to the technical field of polyurethane coating toning and feeding, and particularly relates to a feeding tool for waterborne polyurethane coating toning, which comprises a feeding cylinder, a sealing shell, a pressing block and a feeding pipe, the sealing shell is arranged at the upper end of the feeding cylinder, the pressing block is arranged on the inner side of the sealing shell, and the feeding pipe is arranged in the middle of the inner side of the sealing shell. By arranging the sliding groove, the spring, the main control piston mechanism, the extrusion disc, the sealing piston head, the limiting block and the flow guide groove, the feeding cylinder is aligned to the position where feeding is needed, and raw materials are conveyed into the material injection groove through the feeding cylinder and then flow into the inner side of the sealing shell through the through hole in the side end of the bottom of the material injection groove. By applying pressure to the pressing block, the pressure is conducted to the main control piston mechanism to enable the spring to contract until the sealing piston head penetrates through the tail end of the feeding cylinder, and raw materials flow out of the flow guide groove. After charging is completed, only pressure applied to the pressing block needs to be stopped, the main control piston mechanism is jacked up after the spring rebounds, and the sealing piston head moves upwards to be reset.

Description

Technical Field

[0001] This utility model relates to the field of polyurethane coating color matching and feeding technology, specifically a feeding tool for water-based polyurethane coating color matching. Background Technology

[0002] The core value of tinting tools for waterborne polyurethane coatings lies in their ability to precisely match color requirements and improve the efficiency of environmentally friendly coating processes. With increasingly stringent environmental regulations and the market's pursuit of personalized coatings, these tools significantly reduce manual tinting errors and raw material waste through high-precision metering, stable dispersion of color pastes, and rapid mixing, while simultaneously meeting the low VOC (volatile organic compound) production requirements of waterborne coatings. Their application not only shortens the tinting cycle and adapts to the trend of small-batch customized production, but also promotes the transformation of the coatings industry towards green and intelligent manufacturing, becoming a key technological support for achieving sustainable coating processes.

[0003] The existing technology has the following shortcomings: The existing technology, "A feeding tool for color matching of water-based polyurethane coatings", published by CN209020335U, "includes a storage cavity, a support rod is fixedly installed on the outer surface of one side of the upper end of the storage cavity, and a connecting rod is provided on the outer surface of one end of the support rod".

[0004] The aforementioned structure, equipped with a feed funnel, a detachable discharge pipe, an adjustable discharge plate, an adjustable rotating disc, and an adjustable soft brush, makes it easier to add water-based polyurethane coatings or water into the storage chamber, ensuring that the coatings or water are not wasted due to splashing. However, if the coating inside the storage chamber is left to stand for a long time, its viscosity may increase or even partially solidify due to solvent evaporation or component stratification. Increased viscosity can lead to blockage of the feeding channel. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a feeding tool for color matching of water-based polyurethane coatings, which solves the problem that prolonged standing can easily cause internal blockage and prevent the coating from quickly restoring its fluidity.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a feeding tool for color matching of water-based polyurethane coatings, comprising a feeding cylinder, a sealing shell, a pressing block, and a feeding tube, wherein the sealing shell is disposed at the upper end of the feeding cylinder, the pressing block is disposed inside the sealing shell, and the feeding tube is disposed in the middle of the inner side of the sealing shell.

[0007] The main control piston mechanism is provided inside the sealed housing.

[0008] The feeding cylinder also includes a chute and a spring. The chute has five sets and is located on the inner wall end face of the feeding cylinder. The spring is fixedly connected to the top of the feeding cylinder and the side end of the main control piston mechanism.

[0009] As a preferred technical solution of this utility model, the main control piston mechanism further includes an injection groove, a connecting column, an extrusion plate, a sealing piston head, a limiting block, and a guide groove, wherein the injection groove is located in the middle of the main control piston mechanism.

[0010] As a preferred embodiment of the present invention, the main control piston mechanism has a columnar structure in the middle and a disc-shaped structure at the top, with a sealing ring surrounding the disc-shaped structure.

[0011] As a preferred embodiment of this utility model, the connecting column is fixedly connected to the bottom position of the top disc-shaped structure of the main control piston mechanism, the extrusion disc is sleeved around the connecting column, and the sealing piston head is fixedly installed at the bottom end of the main control piston mechanism.

[0012] As a preferred technical solution of this utility model, the limiting block is fixedly connected to the outer end face of the sealing piston head, and the guide groove is opened on the side end of the sealing piston head, and five sets are provided.

[0013] As a preferred technical solution of this utility model, the limiting block is provided in five sets, and its position corresponds to the sliding groove and establishes a sliding connection with it.

[0014] As a preferred technical solution of this utility model, the extrusion disc is provided in two sets, and a through hole of the same diameter is opened in the middle, and the through hole is arranged at equal intervals along the circumference.

[0015] Compared with the prior art, this utility model provides a feeding tool for color matching of water-based polyurethane coatings, which has the following beneficial effects:

[0016] A feeding tool for tinting water-based polyurethane coatings comprises a chute, spring, main control piston mechanism, extrusion plate, sealing piston head, limiting block, and guide channel. In use, the operator connects the end of the feeding tube to an external feeding mechanism and aligns the feeding cylinder with the desired feeding position. The raw material is then conveyed through the feeding cylinder to the injection tank, and then flows into the inner side of the sealing housing through a through-hole at the bottom side of the injection tank. The operator applies pressure to the pressing block; the pressure is transmitted to the main control piston mechanism, causing the spring to contract until the sealing piston head passes through the end of the feeding cylinder, and the raw material flows out from the guide channel. After feeding, simply stopping the pressure on the pressing block allows the spring to return and lift the main control piston mechanism, causing the sealing piston head to move upwards and reset. If the feeding cylinder has been unused for an extended period, the internal pigment may become too viscous due to prolonged settling. In this case, the operator simply needs to add material to the injection tank and repeatedly apply and release pressure on the pressing block. The rapid contraction and rebound of the spring causes the extrusion disc at the lower end of the main control piston mechanism to continuously perform piston-like extrusion motion on the coating, restoring the fluidity of the coating.

[0017] The above-mentioned design simplifies the feeding control structure compared to commonly used feeding devices. Through the cooperation of the spring and the main control piston mechanism, the feeding process is simple and easy to control. Furthermore, the cooperation of the extrusion plate and the spring can quickly agitate the remaining coating inside the device, restoring the fluidity of viscous coating that has been standing for a long time and preventing the accumulation and blockage of the remaining coating inside. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the bottom structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the sealing shell of this utility model;

[0021] Figure 4 This is a schematic cross-sectional view of the main control piston mechanism of this utility model.

[0022] In the diagram: 1. Feeding cylinder; 101. Slide groove; 102. Spring; 2. Sealing housing; 3. Pressing block; 4. Main control piston mechanism; 401. Injection groove; 402. Connecting column; 403. Extrusion plate; 404. Sealing piston head; 405. Limiting block; 406. Guide groove; 5. Feeding pipe. Detailed Implementation

[0023] 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.

[0024] In this embodiment: a feeding tool for color matching of waterborne polyurethane coatings includes a feeding cylinder 1, a sealing shell 2, a pressing block 3, and a feeding tube 5. The sealing shell 2 is disposed at the upper end of the feeding cylinder 1, the pressing block 3 is disposed inside the sealing shell 2, and the feeding tube 5 is disposed in the middle of the inner side of the sealing shell 2.

[0025] The main control piston mechanism 4 is provided inside the sealed housing 2.

[0026] The feeding cylinder 1 also includes a slide groove 101 and a spring 102. The slide groove 101 has five sets and is located on the inner wall end face of the feeding cylinder 1. The spring 102 is fixedly connected to the top of the feeding cylinder 1 and the side end of the main control piston mechanism 4.

[0027] In this embodiment, the main control piston mechanism 4 also includes a material injection groove 401, a connecting column 402, an extrusion disc 403, a sealing piston head 404, a limiting block 405, and a guide groove 406. The material injection groove 401 is located in the middle of the main control piston mechanism 4. The middle of the main control piston mechanism 4 has a columnar structure, and a disc-shaped structure is provided on its top. A sealing ring is fitted around the disc-shaped structure.

[0028] Specifically, such as Figure 1 and Figure 4 As shown, the filling tank 401 receives the coating material from the outside and temporarily stores it, and then conveys it outward through the through holes around the bottom. After passing through the through holes, the coating material enters the inside of the sealed housing 2, and some of the coating material also flows into the inside of the feeding cylinder 1.

[0029] In this embodiment, the connecting column 402 is fixedly connected to the bottom position of the top disc structure of the main control piston mechanism 4, the extrusion disc 403 is sleeved around the connecting column 402, and the sealing piston head 404 is fixedly installed at the bottom end of the main control piston mechanism 4; the limiting block 405 is fixedly connected to the outer end face of the sealing piston head 404, and the guide groove 406 is opened on the side end of the sealing piston head 404, and five sets are provided.

[0030] Specifically, such as Figure 2 and Figure 3 As shown, the limiting block 405 inserted into the slide groove 101 can ensure the stability of its own stroke when the sealing piston head 404 makes piston movement, while the guide groove 406 can promote the smoothness of paint feeding.

[0031] In this embodiment, five sets of limiting blocks 405 are provided, and their positions correspond to the sliding grooves 101 respectively, and a sliding connection relationship is established with them; two sets of extrusion discs 403 are provided, and through holes of the same diameter are opened in the middle, and the through holes are arranged equidistantly along the circumference.

[0032] The working principle and usage process of this utility model are as follows: When using this structure, the operator connects the end of the feeding pipe 5 to the external feeding mechanism and aligns the feeding cylinder 1 with the position where feeding is required. At this time, the raw material is conveyed to the injection tank 401 through the feeding cylinder 1, and then flows into the inner side of the sealing housing 2 through the through hole at the bottom side of the injection tank 401. The operator applies pressure to the pressing block 3, and the pressure is transmitted to the main control piston mechanism 4, causing the spring 102 to contract until the sealing piston head 404 passes through the end of the feeding cylinder 1, and the raw material flows out from the guide groove 406. After feeding is completed, simply stop applying pressure to the pressing block 3, and the spring 102 rebounds and lifts the main control piston mechanism 4, causing the sealing piston head 404 to move upward and reset. When the inside of the feeding cylinder 1 has not been used for a long time, the internal pigment has been sitting for a long time, resulting in excessive viscosity. At this time, the operator only needs to add material to the injection tank 401 and repeatedly press and release the pressing block 3. The rapid contraction and rebound of spring 102 causes the extrusion disc 403 at the lower end of the main control piston mechanism 4 to continuously perform piston-like extrusion motion on the coating, restoring the fluidity of the coating.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An aqueous polyurethane coating color matching feeding tool, comprising a feeding barrel (1), a sealed shell (2), a pressing block (3) and a feeding pipe (5), the sealed shell (2) is arranged on the upper end of the feeding barrel (1), the pressing block (3) is arranged inside the sealed shell (2), and the feeding pipe (5) is arranged in the middle of the inside of the sealed shell (2), characterized in that: a main control piston mechanism (4) is arranged inside the sealed shell (2); the feeding barrel (1) further comprises a chute (101) and a spring (102), the chute (101) is provided with five groups and is arranged on the end face of the inner wall of the feeding barrel (1), and the spring (102) is fixedly connected to the top of the feeding barrel (1) and the side end of the main control piston mechanism (4).

2. The waterborne polyurethane paint toning dosing tool according to claim 1, characterized in that: the main control piston mechanism (4) further comprises an injection slot (401), a connecting column (402), an extrusion disc (403), a sealing piston head (404), a limiting block (405) and a flow guide groove (406), and the injection slot (401) is arranged in the middle of the main control piston mechanism (4).

3. The waterborne polyurethane paint toning dosing tool according to claim 1, characterized in that: the middle of the main control piston mechanism (4) is in a columnar structure, the top of which is provided with a disc structure, and a sealing rubber ring is sleeved on the periphery of the disc structure.

4. The waterborne polyurethane paint toning dosing tool according to claim 2, characterized in that: the connecting column (402) is fixedly connected to the bottom position of the disc structure on the top of the main control piston mechanism (4), the extrusion disc (403) is sleeved on the periphery of the connecting column (402), and the sealing piston head (404) is fixedly installed at the bottom end of the main control piston mechanism (4).

5. The waterborne polyurethane paint toning dosing tool according to claim 2, characterized in that: the limiting block (405) is fixedly connected to the peripheral end face of the sealing piston head (404), and the flow guide groove (406) is arranged on the side end of the sealing piston head (404) and is provided with five groups.

6. The waterborne polyurethane paint toning dosing tool according to claim 2, characterized in that: the limiting block (405) is provided with five groups, and the positions thereof correspond to the chute (101) respectively and establish a sliding connection relationship with the chute (101).

7. The waterborne polyurethane paint toning dosing tool according to claim 2, characterized in that: the extrusion disc (403) is provided with two groups, and through holes with the same diameter are arranged in the middle of the extrusion disc (403), and the through holes are arranged equidistantly along the circumference.

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