A powder coating bonder

Abstract

The utility model discloses a kind of powder coating bonding machine, including bonding kettle, blanking system, bonding system, driving assembly, heating pipe, heat sink, control unit, temperature measuring unit, discharge port and support frame.Spiral blade is used to pre-disperse and premix powder coating and metal powder, then by mixing roller, pre-mixed powder coating and metal powder are fully mixed, high-speed stirring and friction, heating pipe is set simultaneously to assist heating, temperature is faster and the metal powder that is fully dispersed around powder coating particle is rapidly bonded;Scraper scrapes powder coating and metal powder on the bottom and inner wall of bonding kettle, to avoid powder coating and metal powder adhere to the bottom and inner wall of bonding kettle.This application not only solves the problem of embedding metal pigment powder into the surface of powder coating particle fully and quickly, accelerates bonding speed;Simultaneously solve the problem that powder coating and metal powder are easily adhered to the bottom and inner wall of bonding kettle, improve the efficiency of bonding.

Description

Technical Field

[0001] This utility model relates to the field of powder coating processing technology, specifically to a powder coating bonding machine. Background Technology

[0002] The bonding of metallic powder coatings involves perfectly adhering and embedding metallic pigment powder into the surface of powder coating particles, ensuring that the metallic powder and powder coating particles do not separate during the coating process, thereby enhancing the metallic shimmer effect of the coated product.

[0003] For example, Chinese Patent No. CN219942826U, published on November 3, 2023, discloses a bonding machine, including a staircase. A cooling mechanism is located at the back of the staircase, a feeding mechanism is located at the top of the cooling mechanism, and a bonding mechanism is located on the right side of the cooling mechanism. An electrical control box is located on the front of the bonding mechanism. The feeding mechanism includes two material bins, each containing a storage hopper. Each storage hopper has an electrically controlled valve at its bottom, a volume control hopper below each valve, and a weighing device at the bottom of each volume control hopper. An electric push rod is located on the left side of each weighing device, and a discharge pipe is located at the bottom of each weighing device. The bonding mechanism includes a power box, with a bonding vessel at its top. This invention, through its design, effectively ensures the precise ratio between powdered coatings and metal powder, effectively prevents mixing between different batches of products, and effectively guarantees product quality.

[0004] As can be seen from the above patents, the bonding machine uses a stirring roller to rapidly stir and rub the powder coating and metal powder after precisely proportioning them. However, this method suffers from the problem of needing to fully and quickly embed the metal pigment powder into the surface of the powder coating particles. Therefore, this invention provides a powder coating bonding machine to solve the above-mentioned problem. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a powder coating bonding machine.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A powder coating bonding machine, comprising a bonding autoclave; A feeding system is used for accurately weighing, mixing, and feeding powder coatings and metal powders. The feeding system is eccentrically positioned above and below the top of the bonding reactor. A bonding system for bonding powder coatings and metal powders, wherein the bonding system is disposed inside the bonding autoclave; A drive assembly for driving the bonding system to rotate in the bonding autoclave to bond powder coatings and metal powders, the drive assembly being installed inside and below the bonding autoclave, and the drive assembly including a rotating shaft and a motor; The bonding system includes a spiral blade, a stirring roller, and a scraper arranged sequentially from top to bottom. The spiral blade is used to disperse and premix the powder coating and metal powder. The stirring roller is used to fully mix the powder coating and metal powder and to perform high-speed stirring friction. The scraper is used to scrape away the powder coating and metal powder on the bottom and inner wall of the bonding vessel for further mixing and high-speed friction. The spiral blade, stirring roller, and scraper are all fixedly connected to and coaxially arranged with the rotating shaft located at the center inside the bonding vessel.

[0007] Preferably, the feeding system includes, from top to bottom, a feeding hopper, a fixed support, a first solenoid valve, a weighing hopper, a second solenoid valve, a weighing device, a feeding pipe, and a material distributor. The fixed supports are eccentrically mounted above the top of the bonding vessel. The first and second solenoid valves and the weighing device are respectively located at the bottom of the feeding hopper and the weighing hopper. The weighing hopper is mounted inside the fixed support. The bottom of the weighing hopper extends downward through the top of the bonding vessel and is sequentially connected to the feeding pipe and the material distributor.

[0008] Preferably, the spiral blades are distributed in a descending manner from the end furthest from the axis to the axis in a plane, that is, the end furthest from the axis is higher than the axis, and the spiral blades are spirally arranged from top to bottom along the rotation axis; the stirring roller is a multi-layered structure with multiple stirring rollers, with the rotation axis as the center, and adjacent stirring rollers in each layer are evenly distributed at a 30º angle; the scraper includes a horizontal scraper and a vertical scraper, which are respectively close to the bottom and inner wall of the bonding vessel, the vertical scraper is fixedly connected to both ends of the horizontal scraper, and the horizontal scraper is fixedly connected to the rotation axis.

[0009] Preferably, the rotating shaft is located at the center inside the bonding vessel and is rotatably connected to the center of the top and bottom of the bonding vessel. The motor is located below the bonding vessel, and the output end of the motor is fixedly connected to the rotating shaft via a coupling.

[0010] Preferably, a heating tube is provided at the bottom of the bonding vessel, the heating tube is wound from the center to the edge, a heat sink and a control unit are provided on the outer wall of the bonding vessel, the heat sink is densely distributed on the outer wall of the bonding vessel, a temperature measuring unit and a discharge port are respectively provided at the bottom of the inner wall of the bonding vessel, and several support frames are provided at the bottom edge of the bonding vessel.

[0011] Preferably, the control unit is electrically connected to the first solenoid valve, the second solenoid valve, the weighing device, the motor, the heating tube, and the temperature measuring unit, respectively.

[0012] The beneficial effects of this utility model are: 1. After the powder coating and metal powder are precisely proportioned by the weighing hopper, they are first evenly distributed by the distributor and pre-dispersed and pre-mixed by the spiral blades. Then, the pre-mixed powder coating and metal powder are fully mixed, stirred and rubbed at high speed by the stirring roller. At the same time, the heating tube is set up for auxiliary heating, so that the powder coating heats up faster and the metal powder that is fully dispersed around the powder coating particles is quickly bonded.

[0013] 2. A scraper is installed to remove powder coating and metal powder from the bottom and inner wall of the bonding vessel, preventing them from adhering to the bottom and inner wall of the bonding vessel and affecting the bonding efficiency and effect.

[0014] This application not only solves the problem of fully and quickly embedding metallic pigment powder into the surface of powder coating particles, thus accelerating the bonding speed, but also solves the problem of powder coating and metallic powder easily adhering to the bottom and inner wall of the bonding kettle, thereby improving the bonding efficiency. Attached Figure Description

[0015] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0017] Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is a schematic diagram of the structure of the spiral blade of this utility model; Figure 3 This is a top view of the stirring roller of this utility model. As shown in the figure: 1. Bonding vessel; 10. Support frame; 2. Feeding system; 21. Feeding hopper; 22. Fixed bracket; 23. First solenoid valve; 24. Weighing hopper; 25. Second solenoid valve; 26. Weighing device; 27. Feeding pipe; 28. Distributor; 3. Bonding system; 31. Spiral blade; 32. Agitator roller; 33. Scraper; 331. Horizontal scraper; 332. Vertical scraper; 4. Drive assembly; 41. Rotating shaft; 42. Motor; 5. Heating tube; 6. Heat sink; 7. Control unit; 8. Temperature measuring unit; 9. Discharge port. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0021] It should be noted that similar labels and letters are likely to represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Reference Figure 1-3 This utility model discloses a powder coating bonding machine, including a bonding kettle 1; a feeding system 2 for accurately weighing, proportioning, and dispensing powder coating and metal powder, eccentrically positioned above and below the top of the bonding kettle 1; a bonding system 3 for bonding the powder coating and metal powder, disposed inside the bonding kettle 1; and a drive assembly 4 for driving the bonding system 3 to rotate within the bonding kettle 1 to bond the powder coating and metal powder, installed inside and below the bonding kettle 1. The drive assembly 4 includes a rotating shaft 41 positioned at the center inside the bonding kettle 1 and a motor 42 positioned below the bonding kettle 1. The bonding system 3 includes a spiral blade 31, a stirring roller 32, and a scraper 33 arranged sequentially from top to bottom and coaxially with the rotating shaft 41. The spiral blade 31 is used to disperse and premix the powder coating and metal powder, the stirring roller 32 is used to fully mix and perform high-speed stirring and friction on the powder coating and metal powder, and the scraper 33 is used to scrape away the powder coating and metal powder on the bottom and inner wall of the bonding kettle 1 to continue mixing and high-speed friction. It also includes a heating element 5, a heat sink 6, a control unit 7, a temperature measuring unit 8, a discharge port 9, and a support frame 10.

[0025] In this embodiment, the powder coating bonding machine uses a feeding system 2 to accurately weigh and uniformly feed the powder coating and metal powder. The spiral blades 31 pre-disperse and pre-mix the powder coating and metal powder, and then the stirring rollers 32 fully mix, stir and rub the pre-mixed powder coating and metal powder. At the same time, the heating tubes 5 are set to provide auxiliary heating, so that the powder coating heats up faster and the metal powder that is fully dispersed around the powder coating particles is quickly bonded, thereby accelerating the bonding speed and improving the bonding efficiency.

[0026] In an optional embodiment, the feeding system 2 includes, from top to bottom, a feeding hopper 21, a fixed support 22, a first solenoid valve 23, a weighing hopper 24, a second solenoid valve 25, a weighing device 26, a feeding pipe 27, and a distributor 28. The two feeding systems 2 are symmetrically arranged around the axis of the bonding vessel 1 and are used to accurately proportion and uniformly feed the powder coating and metal powder, respectively. The fixed support 22, which fixes and supports the feeding hopper 21, is eccentrically mounted above the top of the bonding vessel 1. The first solenoid valve 23 and the second solenoid valve 25, which are used to open and close the feeding hopper 21 and the weighing hopper 24, respectively, and the weighing device 26 are respectively located at the bottom of the feeding hopper 21 and the weighing hopper 24. The bottom of the weighing hopper 24, which is used to accurately weigh the powder coating and the metal powder, passes downward through the top of the bonding vessel 1 and is sequentially equipped with a feeding pipe 27 and a distributor 28. The distributor 28 is used to evenly distribute and disperse the powder coating and the metal powder, respectively.

[0027] In an optional embodiment, the spiral blades 31 are distributed in a descending manner from the end away from the axis to the axis in a plane, that is, the end of the spiral blades 31 away from the axis is higher than the axis. The spiral blades 31 are spirally arranged from top to bottom along the rotation axis 41, so that the dispersed powder coating and metal powder can be dispersed and premixed along the spiral blades 31. Multiple layers of stirring rollers 32 are arranged with the rotation axis 41 as the center, and adjacent stirring rollers 32 in each layer are evenly distributed at an angle of 30º. The scrapers 33 include those that are close to the bottom of the bonding tank 1. The horizontal scraper 331 and the vertical scraper 332, which are respectively close to the inner wall of the bonding vessel 1, are fixedly connected at both ends of the vertical scraper 332 and the horizontal scraper 331. The horizontal scraper 331 is fixedly connected to the rotating shaft 41. The rotating shaft 41 can drive the horizontal scraper 331 and then drive the vertical scraper 332 to rotate synchronously, scraping away the powder coating and metal powder on the bottom and inner wall of the bonding vessel 1 to continue mixing and high-speed friction, so as to avoid the powder coating and metal powder adhering to the bottom and inner wall of the bonding vessel 1, which would affect the bonding efficiency and effect.

[0028] In an optional embodiment, the output end of the motor 42 is fixedly connected to the rotating shaft 41 via a coupling. The rotating shaft 41 is rotatably connected to the center of the top and bottom of the bonding vessel 1. The output end of the motor 42 drives the rotating shaft 41 to rotate, which in turn drives the scraper 33, the stirring roller 32 and the spiral blade 31 to rotate, providing power to the bonding system 3.

[0029] In an optional embodiment, a heating tube 5 for auxiliary heating is disposed at the bottom of the bonding vessel 1. The heating tube 5 is wound from the center to the edge, which can achieve uniform heating of the bottom of the bonding vessel 1, so that the powder coating heats up faster and the metal powder that is fully dispersed around the powder coating particles is quickly bonded. Heat sinks 6 for dissipating heat from the bonding vessel 1 are densely distributed on the outer wall of the bonding vessel 1. A temperature measuring unit 8 for measuring the temperature of the powder coating and the metal powder is disposed at the bottom of the inner wall of the bonding vessel 1. A discharge port 9 for discharging material and several support frames 10 for fixing and supporting the bonding vessel 1 are respectively disposed at the bottom of the inner wall and the bottom edge of the bonding vessel 1.

[0030] In an optional embodiment, the control unit 7 disposed on the outer wall of the bonding vessel 1 is electrically connected to the first solenoid valve 23, the second solenoid valve 25, the weighing device 26, the motor 42, the heating tube 5 and the temperature measuring unit 8 respectively, and is controlled by the control unit 7 respectively.

[0031] The working principle and usage process of this utility model are as follows: Powder coating and metal powder enter the feeding hopper 21 respectively. The control unit 7 controls the opening of the first solenoid valve 23 and the weighing device 26 and the closing of the second solenoid valve 25. The weighing device 26 accurately weighs and mixes the powder coating and metal powder in the weighing hopper 24. When the set ratio is reached, the control unit 7 controls the closing of the first solenoid valve 23 and the opening of the second solenoid valve 25. The powder coating and metal powder in the weighing hopper 24 enter the distributor 28 through the feeding pipe 27 for uniform distribution and pre-dispersion before falling into the bonding system 3. The control unit 7 controls the opening of the motor 42, the heating tube 5 and the temperature measuring unit 8. The output end of the motor 42 drives the rotating shaft 41, which in turn drives the scraper 33, the stirring roller 32 and the spiral blade 31 to rotate. The powder coating and metal powder pass through the spiral... The blades 31 pre-disperse and pre-mix the powder coating and metal powder, and then the stirring rollers 32 thoroughly mix, stir and rub the pre-mixed powder coating and metal powder at high speed. At the same time, the heating tubes 5 provide auxiliary heating, so that the powder coating heats up faster and the metal powder that is fully dispersed around the powder coating particles is quickly bonded. The scraper 33 scrapes away the powder coating and metal powder on the bottom and inner wall of the bonding vessel 1 to continue mixing and high-speed friction, so as to prevent the powder coating and metal powder from adhering to the bottom and inner wall of the bonding vessel 1. The temperature measuring unit 8 monitors the temperature of the powder coating and metal powder near the discharge port 9 in real time to keep the temperature at around the glass transition temperature (Tg) of the powder coating. At the same time, the heat sink 6 dissipates heat and cools the bonding vessel 1. The bonded material is discharged from the discharge port 9 for collection.

[0032] Of course, the embodiments described in this specific implementation are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A powder coating bonding machine, comprising a bonding kettle (1); The feeding system (2) is used to accurately weigh, mix and feed powder coatings and metal powders. The feeding system (2) is eccentrically positioned above and below the top of the bonding kettle (1). A bonding system (3) is used to bond powder coatings and metal powders, and the bonding system (3) is disposed inside the bonding kettle (1). A drive assembly (4) is used to drive the bonding system (3) to rotate in the bonding vessel (1) to bond powder coating and metal powder. The drive assembly (4) is installed inside and below the bonding vessel (1). The drive assembly (4) includes a rotating shaft (41) and a motor (42). Its features are: The bonding system (3) includes a spiral blade (31), a stirring roller (32), and a scraper (33) arranged sequentially from top to bottom. The spiral blade (31) is used to disperse and premix the powder coating and metal powder. The stirring roller (32) is used to fully mix the powder coating and metal powder and to perform high-speed stirring and friction. The scraper (33) is used to scrape away the powder coating and metal powder on the bottom and inner wall of the bonding vessel (1) to continue mixing and high-speed friction. The spiral blade (31), stirring roller (32), and scraper (33) are all fixedly connected to the rotating shaft (41) located at the center inside the bonding vessel (1) and are arranged coaxially.

2. The powder coating bonding machine according to claim 1, characterized in that: The feeding system (2) includes a feeding hopper (21), a fixed bracket (22), a first solenoid valve (23), a weighing hopper (24), a second solenoid valve (25), a weighing device (26), a feeding pipe (27), and a material distributor (28) arranged sequentially from top to bottom. The fixed bracket (22) is eccentrically mounted above the top of the bonding vessel (1). The first solenoid valve (23), the second solenoid valve (25), and the weighing device (26) are respectively located at the bottom of the feeding hopper (21) and the weighing hopper (24). The weighing hopper (24) is mounted inside the fixed bracket (22). The bottom of the weighing hopper (24) extends downward through the top of the bonding vessel (1) and is sequentially equipped with a feeding pipe (27) and a material distributor (28).

3. A powder coating bonding machine according to claim 1, characterized in that: The spiral blades (31) are distributed in a downward direction from the end away from the axis to the axis in a plane, that is, the end away from the axis of the spiral blades (31) is higher than the axis of the axis. The spiral blades (31) are spirally arranged from top to bottom along the rotating axis (41). The stirring roller (32) is a multi-layered structure with multiple stirring rollers. With the rotating axis (41) as the center, adjacent stirring rollers (32) in each layer are evenly distributed at an angle of 30º. The scraper (33) includes a horizontal scraper (331) and a vertical scraper (332). The horizontal scraper (331) and the vertical scraper (332) are respectively close to the bottom and inner wall of the bonding vessel (1). The vertical scraper (332) is fixedly connected to both ends of the horizontal scraper (331). The horizontal scraper (331) is fixedly connected to the rotating axis (41).

4. A powder coating bonding machine according to claim 1, characterized in that: The rotating shaft (41) is located at the center inside the bonding vessel (1) and is rotatably connected to the center of the top and bottom of the bonding vessel (1). The motor (42) is located below the bonding vessel (1), and the output end of the motor (42) is fixedly connected to the rotating shaft (41) through a coupling.

5. A powder coating bonding machine according to claim 2, characterized in that: The bonding vessel (1) is provided with a heating tube (5) at the bottom, which is wound from the center to the edge. The bonding vessel (1) is provided with a heat sink (6) and a control unit (7) on the outer wall. The heat sink (6) is densely distributed on the outer wall of the bonding vessel (1). The bonding vessel (1) is provided with a temperature measuring unit (8) and a discharge port (9) at the bottom of the inner wall. The bonding vessel (1) is provided with several support frames (10) at the bottom edge.

6. A powder coating bonding machine according to claim 5, characterized in that: The control unit (7) is electrically connected to the first solenoid valve (23), the second solenoid valve (25), the weighing device (26), the motor (42), the heating tube (5), and the temperature measuring unit (8), respectively.

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