Electric rotary powder cup

Abstract

An electric rotating powder cup comprises a powder cup body, a rotating cup, an electric rotating motor and a rotating shaft, a powder conveying channel is formed in the rotating shaft, one end of the rotating shaft is communicated with the electric rotating motor, and the other end of the rotating shaft extends to a powder outlet end in the axial direction and is communicated with the rotating cup; the electric rotating motor drives the rotating cup to rotate through the rotating shaft, and powder is conveyed to the powder outlet end through the powder conveying channel after being input from the powder inlet end and then sprayed out from the rotating rotating cup. The electric rotating motor is adopted to drive the rotating cup to rotate, and the design of the hollow tubular rotating shaft is combined, so that powder is uniformly conveyed and efficiently discharged, and the problems of accumulation and non-uniform distribution of the powder in the spraying process are effectively avoided. And meanwhile, the uniformity of the powder is further improved through the double-layer design of the rotary cup head, so that the sprayed powder is finer and more uniform.

Description

Technical Field

[0001] This utility model relates to the field of electrostatic powder coating technology, specifically to an electrostatic powder coating cup. Background Technology

[0002] In electrostatic powder coating, the rotary powder cup is a key component, and its performance directly affects the coating effect and coating quality. Traditional powder coating equipment, such as some rotary cup spray guns, suffers from problems such as poor coating effect, rough coating, and insufficient smoothness. These problems are mainly due to the powder not being uniformly sprayed during the spraying process, resulting in uneven distribution of large powder particles, which makes it difficult to form a uniform and delicate coating after adsorption onto the workpiece surface.

[0003] For example, Chinese utility model patent application number 201820678490.4 discloses a rotary cup spray gun. Although it achieves powder spraying to a certain extent, the rotary cup head in the spray gun is designed in a spiral form and is fitted into the turbine air chamber. It is rotated by pneumatic means to spray out the powder. In such a structure, when the powder is sprayed out, it will be affected by the airflow and change the spraying path. As a result, the sprayed powder air is not uniform, the spraying effect is weakened, and the formed coating is relatively rough and uneven, which cannot achieve the coating effect of high smoothness quality standard. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides an electro-spinning powder cup.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] An electric powder cup, comprising:

[0007] The powder cup body has a powder inlet end and a powder outlet end;

[0008] The rotary cup is installed at the powder outlet end of the powder cup body;

[0009] The electric rotary motor is located at the powder inlet end of the powder cup body and has a through-type structure in the middle;

[0010] The rotating shaft has a powder conveying channel inside, one end of which is connected to an electric rotary motor, and the other end extends axially to the powder outlet end and is connected to the rotary cup.

[0011] The electric rotary motor drives the rotary cup to rotate via a rotating shaft. Powder is input from the powder inlet end and transported to the powder outlet end through the powder conveying channel, and then sprayed out from the rotating rotary cup.

[0012] Furthermore, the outer end of the electric rotary motor is provided with an outwardly extending powder tube interface, which is connected to the rotating shaft, and the powder cup body is connected to the powder supply center through the powder tube interface.

[0013] In this invention, the powder cup body is provided with a chamber, and an electrostatic generator is also provided in the chamber. One end of the electrostatic generator is fixed to the powder outlet end. When working, the electrostatic generator outputs high voltage static electricity and conducts it to the rotating cup. The rotating cup generates corona discharge, causing the sprayed powder to carry a high voltage negative charge.

[0014] In this utility model, the rotary cup includes a trumpet-shaped rotary cup body, a connecting seat installed at the constricted end of the rotary cup body, and a rotary cup head installed at the flared end of the rotary cup body. The rotary cup head and the rotary cup body form an annular powder outlet. The connecting seat has a through hole in the middle, and the through hole connects to the powder conveying channel.

[0015] Furthermore, the rotating cup head has two layers. The diameter of the inner rotating cup head is smaller than that of the outer rotating cup head. The inner rotating cup head divides the rotating cup body into two spaces, an inner and an outer space. Both spaces discharge powder through the powder outlet. At the same time, an opening is provided in the middle of the inner rotating cup head to connect the two spaces.

[0016] In this invention, the electric rotary motor includes a motor base and a rotor. The motor base is connected to the powder cup body. After the rotor is energized, it rotates inside the motor base. The rotor is connected to a rotating shaft. The electric rotary motor is also connected to a controller, which can control the rotation speed of the rotor, thereby controlling the rotation speed of the rotary cup.

[0017] This utility model has the following advantages and beneficial effects:

[0018] By employing an electric rotary motor to drive the rotating cup and combining it with a hollow tubular shaft design, uniform powder delivery and efficient output are achieved, effectively avoiding powder accumulation and uneven distribution during the spraying process. Simultaneously, the double-layer design of the rotating cup head further enhances powder uniformity, resulting in a finer and more evenly sprayed powder.

[0019] Furthermore, the electrostatic generator imparts a high-voltage negative charge to the powder, enhancing its adhesion to the workpiece surface and improving coating adhesion and quality. The controller connection allows for adjustable rotary cup speed, making the electro-powder cup suitable for different spraying applications, offering greater flexibility and practicality. Its controllable and monitorable operation also facilitates powder recovery in the powder booth.

[0020] In summary, this novel electrostatic powder coating cup has advantages such as good spraying effect, high coating quality, and wide applicability, and is of great significance for improving the level of electrostatic powder coating technology. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0022] Figure 1 This is a schematic diagram of the powder cup structure in this embodiment;

[0023] Figure 2 This is the front view of the powder cup in this embodiment;

[0024] Figure 3 for Figure 2 AA section view in the middle;

[0025] Figure 4 This is a disassembled diagram of the rotary cup in this embodiment;

[0026] Figure 5 This is a schematic diagram of the structure of the electric rotary motor in this embodiment. Detailed Implementation

[0027] 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. However, this utility model is not limited to the following embodiments.

[0028] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0030] like Figures 1 to 5As shown, this embodiment discloses an electric rotary powder cup, including a powder cup body 1 and a rotary cup 2. The powder cup body 1 includes a powder inlet end 11 and a powder outlet end 12. The rotary cup 2 is installed at the powder outlet end 12 of the powder cup body 1. The powder inlet end 11 of the powder cup body 1 is connected to a powder supply center. The powder inlet end 11 of the powder cup body 1 is also provided with an electric rotary motor 13. The electric rotary motor 13 has a through-hole structure and includes a motor base 131 and a rotor 132. The motor base 131 is connected to the powder cup body 1. The rotor 132 rotates inside the powder cup body 1 after being energized. A rotating shaft 1 is also connected to the inner end face of the rotor 132. 4. The rotating shaft 14 is a hollow tubular structure with an internal conveying channel 140 for conveying powder. The rotating shaft 14 extends axially to the powder outlet 12. In addition, a ring-shaped rotating head 15 is provided at the powder outlet 12. The outer surface of the rotating head 15 is slidably engaged with the powder cup body 1. The extended end of the rotating shaft 14 is connected to the inner surface of the rotating head 15. The rotating cup 2 is specifically mounted on the rotating head 15. Thus, the electric rotary motor 13 can drive the rotating cup 2 to rotate through the rotating shaft 14. After the powder is input from the powder inlet 11, it can be conveyed through the rotating shaft 14 to the powder outlet 12 and then sprayed out by the rotating cup 2.

[0031] Furthermore, the outer end of the motor base 131 is provided with an outwardly extending powder tube interface 133, the inner end of the powder tube interface 133 is connected to the rotating shaft 14, and the powder cup body 1 is connected to the powder supply center through the powder tube interface 133.

[0032] In this embodiment, the powder cup body 1 has a cavity 10 inside, and an electrostatic generator 16 is also provided in the cavity 10. One end of the electrostatic generator 16 is fixed to the powder outlet 12. When working, the electrostatic generator 16 outputs high voltage static electricity and conducts it to the rotary cup 2. The rotary cup 2 generates corona discharge to make the sprayed powder carry high voltage negative charge.

[0033] In this embodiment, the rotary cup 2 includes a trumpet-shaped rotary cup body 21, a connecting seat 22 installed at the constricted end of the rotary cup body 21, and a rotary cup head 23 installed at the flared end of the rotary cup body 21. The rotary cup head 23 and the rotary cup 2 form an annular powder outlet 20. Specifically, the inner side of the constricted end of the rotary cup body 21 is provided with an internal thread, while the outer side of the connecting seat 22 is provided with an external thread. The connecting seat 22 extends from the flared end of the rotary cup body 21 and is threadedly engaged with the rotary cup body 21 at the constricted end. The rotary cup head 23 is fixedly connected to the inner side of the connecting seat 22 by a stud. In addition, the middle part of the connecting seat 22 is provided with a through hole 220. The end of the connecting seat 22 away from the rotary cup head 23 is sleeved on the rotating head 15. Thus, when the rotary cup 2 rotates, the powder output from the powder outlet 12 can enter the interior of the rotary cup body 21 through the through hole 220 and then be sprayed out through the powder outlet 20.

[0034] Furthermore, to improve powder uniformity, the rotating cup head 23 has two layers. The diameter of the inner rotating cup head 23 is smaller than that of the outer rotating cup head 23. The inner rotating cup head 23 divides the rotating cup body 21 into two spaces, an inner and an outer space. Powder is discharged from both spaces through the powder outlet 20. At the same time, an opening 230 is provided in the middle of the inner rotating cup head 23 to connect the two spaces. When the powder enters through the through hole 220, part of the powder directly enters the inner space, and the other part of the powder enters the outer space through the opening 230. When the rotating cup 2 rotates, the powder in both spaces is sprayed out from the powder outlet 20 together. Dividing the interior of the rotating cup body 21 into multiple spaces can form multiple powder discharge channels, thereby avoiding powder accumulation and improving powder uniformity.

[0035] In this embodiment, the electric rotary motor 13 is connected to a controller, which can control the rotation speed of the rotor 132, thereby controlling the rotation speed of the rotary cup 2. Changing the rotation speed of the rotary cup 2 can change the amount of powder sprayed per unit time, thus making it suitable for different objects to be sprayed.

[0036] The above description in this specification is merely an illustrative example of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the specific embodiments described or adopt similar methods to replace them, as long as they do not deviate from the content of this specification or exceed the scope defined in the claims, they shall all fall within the protection scope of this invention.

Claims

1. An electrospinning cup, characterized by, The application relates to a powder cup body (1) with a powder inlet end (11) and a powder outlet end (12); a rotating cup (2) is arranged at the powder outlet end (12) of the powder cup body (1); an electric rotating motor (13) is arranged at the powder inlet end (11) of the powder cup body (1) and has a through structure in the middle; a rotating shaft (14) is internally provided with a powder conveying channel (140), one end of the rotating shaft (14) is communicated with the electric rotating motor (13), the other end of the rotating shaft (14) extends to the powder outlet end (12) in the axial direction and is communicated with the rotating cup (2); the electric rotating motor (13) drives the rotating cup (2) to rotate through the rotating shaft (14), powder is input from the powder inlet end (11), conveyed to the powder outlet end (12) through the powder conveying channel (140) and sprayed from the rotating rotating cup (2). An outwardly extending powder pipe interface (133) is arranged at the outer end of the electric rotating motor (13), the powder pipe interface (133) is communicated with the rotating shaft (14) and the powder cup body (1) is connected with a powder supply center through the powder pipe interface (133). A chamber (10) is arranged in the powder cup body (1), an electrostatic generator (16) is further arranged in the chamber (10), one end of the electrostatic generator (16) is fixed at the powder outlet end (12), during operation, the electrostatic generator (16) outputs high-voltage static electricity and conducts the high-voltage static electricity to the rotating cup (2), the rotating cup (2) generates corona discharge to make the sprayed powder carry high-voltage negative electricity. The rotating cup (2) comprises a horn-shaped rotating cup body (21), a connecting seat (22) arranged at the neck end of the rotating cup body (21) and a rotating cup head (23) arranged at the flared end of the rotating cup body (21), the rotating cup head (23) and the rotating cup body (21) form an annular powder outlet (20), a through hole (220) is arranged in the middle of the connecting seat (22) and the through hole (220) is connected with the powder conveying channel (140). The rotating cup head (23) is provided with two layers, the inner rotating cup head (23) has a smaller diameter than the outer rotating cup head (23) and the inner rotating cup head (23) divides the inner side of the rotating cup body (21) into two spaces, the two spaces are communicated through the powder outlet (20) and an opening (230) is arranged in the middle of the inner rotating cup head (23) to communicate the two spaces. The electric rotating motor (13) comprises a motor seat (131) and a rotor (132), the motor seat (131) is connected with the powder cup body (1), the rotor (132) rotates in the motor seat (131) after being electrified, the rotor (132) is connected with the rotating shaft (14), the electric rotating motor (13) is further connected with a controller, the rotating speed of the rotor (132) and the rotating speed of the rotating cup (2) can be controlled through the controller.

2. The electrospinning cup of claim 1, wherein: ​ 3. The electrospin cup of claim 1, wherein: ​ 4. The electrospin cup of claim 1, wherein: ​ 5. The electrospin cup of claim 4, wherein: ​ 6. The electrospin cup of claim 1, wherein: ​

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