Metal powder adding device and bonding machine

Abstract

This utility model relates to a metal powder adding device and a bonding machine. The metal powder adding device includes a hopper, a screw feeding assembly, and a buffer receiving assembly. The buffer receiving assembly is connected to the metal powder inlet of the bonding machine via a connecting hose. The screw feeding assembly includes a servo motor, a reducer, and a feeding screw. The upper inlet of the feeding screw is connected to the bottom outlet of the hopper, and the outlet on one side of the feeding screw is connected to the receiving port of the buffer receiving assembly. The buffer receiving assembly includes a receiving hopper with a transfer port at the bottom, which is connected to the connecting hose via a jet solenoid valve. This utility model achieves communication with the adding device by opening a metal powder adding port above the bonding pot lid. This not only reduces the weight of the pot lid and lowers safety hazards but also ensures that the metal powder and the bottom powder in the pot are fully mixed, avoiding the phenomenon where the metal powder falls due to gravity before optimization, but then sticks to the upper pot lid due to the heat inside the pot.

Description

Technical Field

[0001] This utility model relates to a metal powder adding device and a bonding machine, belonging to the technical field of powder production equipment. Background Technology

[0002] In recent years, metallic bonding base powders with a metallic sheen have received increasing attention and are widely used in high-end fields such as powder metallurgy, 3D printing, electronic components, new energy batteries, and aerospace. With the rise of emerging industries such as new energy vehicles, intelligent equipment, and green energy, the market demand for metallic powders continues to expand.

[0003] The key process in the production of metallic powder coatings is the bonding of metallic powder and bonding base powder. This process ensures that the metallic pigment particles and bonding base powder particles adhere to each other, preventing the metallic pigment from separating from the bonding base powder during the spraying process, thereby achieving uniformity and consistency of the metallic pigment in the coating film.

[0004] The quality of the bonding result depends on the uniform mixing of the metal powder and the bonding base powder during the bonding process, and the most crucial step is the addition of the metal powder. Currently, the metal powder adding device is directly installed on the bonding pot lid of the bonding machine. A metal cylinder with a butterfly valve is installed on the bonding pot lid. The metal powder is pre-placed in the cylinder, and when the bonding base powder reaches its glass transition temperature, the butterfly valve is opened, allowing the metal powder to enter the bonding machine at the bottom. At this point, the metal powder tends to concentrate in one area. Even with mixing by a stirring paddle, it is difficult to achieve a completely uniform bond between the metal powder and the bonding base powder. Furthermore, because it falls naturally, the metal powder is blown back onto the bonding pot lid by the heat from inside the pot, preventing it from contacting the base powder and ultimately affecting the quality of the finished product. In addition, installing the metal powder adding device directly above the bonding pot lid is not only cumbersome to operate but also increases the weight of the lid. Each time the lid opens or closes, it is difficult to achieve a linear movement; instead, it exhibits a slow initial lifting followed by a sudden acceleration. The same problem occurs when closing, creating safety hazards for operators. Summary of the Invention

[0005] The present invention aims to address the shortcomings of the prior art by providing a metal powder adding device and a bonding machine having the adding device, so that the metal powder can be fully mixed with the bonding base powder after falling, thus avoiding the accumulation of metal powder.

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows: A metal powder adding device includes a base, characterized in that a hopper and a screw feeding assembly are arranged above the base, and a buffer receiving assembly is arranged on one side of the base. The buffer receiving assembly is connected to the metal powder inlet of the bonding machine through a connecting hose. The screw feeding assembly includes a servo motor, a reducer, and a feeding screw driven and controlled by the servo motor and the reducer. The upper end of the feeding screw is provided with a feed inlet, which is connected to the discharge end at the bottom of the hopper. The discharge outlet on one side of the feeding screw is connected to the receiving port of the buffer receiving assembly. A stirring paddle is installed at the bottom of the hopper, at the feed screw inlet. The metal powder in the hopper is stirred by the stirring paddle and then enters the feed screw at the bottom. The buffer receiving assembly includes a receiving hopper and a material transfer port disposed at the bottom of the receiving hopper. The material transfer port is connected to a connecting hose via a jet solenoid valve.

[0007] Furthermore, a weighing sensor is provided above the base, and the hopper and screw feeding assembly are both positioned above the weighing sensor.

[0008] Furthermore, both the weighing sensor and the servo motor are communicatively connected to the PLC controller. The weighing sensor feeds back the acquired data signal to the PLC controller connected to it, and the PLC controller controls the rotation speed of the servo motor based on the weight change.

[0009] Furthermore, the hopper is equipped with an observation window.

[0010] A bonding machine includes a bonding pot body and a bonding pot lid, characterized in that a metal powder inlet is provided on the top of the bonding pot lid, and the metal powder inlet is connected to the aforementioned metal powder adding device via a connecting hose.

[0011] This utility model discloses a metal powder adding device, equipped with both a screw feeding assembly and a buffer receiving assembly. This ensures that the metal powder mixes thoroughly with the bonding base powder after falling, preventing powder accumulation. The hopper stores the metal powder to be added. When powder is needed, the servo motor starts, driving the screw to rotate and feed the powder via a reducer. Simultaneously, the agitator starts working to prevent powder clumping in the hopper. The buffer receiving assembly acts as a buffer, while the metal powder delivered by the screw feeding assembly is blown into the bonding pot through a solenoid valve and connecting hose. Due to the presence of a weighing sensor, a larger amount of metal powder can be added to the hopper at once, eliminating the need for manual weighing each time and reducing the frequency of additions. The weighing sensor accurately measures the weight of the added metal powder, and the servo motor automatically stops once the required weight is reached, ensuring the final bonding powder quality. This bonding machine, through a metal powder addition port located above the bonding pot lid, connects to the addition device. This not only reduces the weight of the pot lid and lowers safety hazards, but also allows the metal powder to enter the bonding pot under pressure via a jet solenoid valve at the outlet of the addition device. This ensures thorough mixing of the metal powder with the bottom powder in the pot, preventing the metal powder from falling due to gravity and sticking to the upper lid due to the heat inside the pot, as was the case before optimization. Practice has proven that the bonding effect is greatly improved after using this device. Attached Figure Description

[0012] Figure 1 Example 1: A schematic diagram of a metal powder adding device; Figure 2 Example 2: A schematic diagram of a bonding machine structure; In the diagram, 1. hopper, 2. observation window, 3. servo motor, 4. reducer, 5. feed screw, 6. agitator, 7. weighing sensor, 8. receiving hopper, 9. jet solenoid valve, 10. bonded pot body, 11. bonded pot lid, 12. connecting hose. Detailed Implementation

[0013] The present invention will now be described in detail with reference to the accompanying drawings.

[0014] Example 1 A metal powder adding device includes a hopper 1, a weighing sensor 7, a servo motor 3, a reducer 4, a feeding screw 5, a receiving hopper 8, and a jet solenoid valve 9, all mounted on a base. The weighing sensor 7 is disposed on the base. The screw feeding assembly, consisting of the servo motor 3, reducer 4, and feeding screw 5, is mounted on the base via the weighing sensor 7. The hopper 1 is installed above the feeding screw 5 and is equipped with an observation window 2 for easy observation of the feeding process. The bottom outlet of the hopper 1 is connected to the inlet of the feeding screw 5, and a stirring paddle 6 is installed at this position on the bottom of the hopper 14. The metal powder inside the hopper 14 is dispersed by the stirring paddle 6 and then enters the feeding screw 5. The bottom of the receiving hopper 8 is provided with a transfer port, and a jet solenoid valve 9 is installed at the transfer port and connected to a connecting hose via the jet solenoid valve 9. In this embodiment, both the weighing sensor 7 and the servo motor 3 are connected to the PLC controller. The weighing sensor 7 feeds back the acquired data signal to the PLC controller connected to it, and then the PLC controller controls the start, stop and speed of the servo motor.

[0015] Example 2 This embodiment relates to a bonding machine having the metal powder adding device described in Embodiment 1. The bonding machine includes a bonding pot body 10 and a bonding pot lid 11. The bonding pot lid 11 has a metal powder adding port 12, and the metal powder adding port 12 is connected to the metal powder adding device described in Embodiment 1 through a connecting hose 13.

[0016] This utility model is not limited to the embodiments discussed above. The above description of specific embodiments is intended to describe and illustrate the technical solutions involved in this utility model. Obvious variations, substitutions, or combinations based on the teachings of this utility model should also be considered to fall within the protection scope of this utility model. The above specific embodiments are used to disclose the best implementation method of this utility model, so that those skilled in the art can apply various embodiments and alternative methods of this utility model to achieve the purpose of this utility model.

Claims

1. A metal powder adding device comprising a base, characterized in that, A hopper and a screw feeding assembly are provided above the base. A buffer receiving assembly is provided on one side of the base. The buffer receiving assembly is connected to the metal powder inlet of the bonding machine via a connecting hose. The screw feeding assembly includes a servo motor, a reducer, and a feeding screw driven and controlled by the servo motor and the reducer. The upper end of the feeding screw is provided with a feed inlet, which is connected to the discharge end at the bottom of the hopper. The discharge outlet on one side of the feeding screw is connected to the receiving port of the buffer receiving assembly. A stirring paddle is installed at the bottom of the hopper, at the feed screw inlet. The metal powder in the hopper is stirred by the stirring paddle and then enters the feed screw at the bottom. The buffer receiving assembly includes a receiving hopper and a material transfer port disposed at the bottom of the receiving hopper. The material transfer port is connected to a connecting hose via a jet solenoid valve.

2. The metal powder adding device as described in claim 1, characterized in that, A weighing sensor is installed above the base, and the hopper and screw feeding assembly are both positioned above the weighing sensor.

3. The metal powder adding device as described in claim 2, characterized in that, Both the weighing sensor and the servo motor are connected to the PLC controller. The weighing sensor feeds back the acquired data signal to the PLC controller connected to it. The PLC controller controls the speed of the servo motor based on the weight change.

4. The metal powder adding device as described in claim 1, characterized in that, The silo is equipped with an observation window.

5. A bonder comprising a bonder body and a bonder lid, characterized by, The bonding pot lid has a metal powder inlet on its top, and the metal powder inlet is connected to the metal powder adding device according to any one of claims 1-4 via a connecting hose.

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