CN112657697A - Electrostatic powder spraying equipment for surface of electronic component and spraying method thereof - Google Patents

Abstract

The invention provides electrostatic powder spraying equipment and a spraying method for the surface of an electronic component, which relate to the field of electrostatic powder spraying and comprise a spraying tank body and a driving unit, wherein the annular side wall of the spraying tank body is fixedly connected with the driving unit; the rotary spraying assembly comprises a bearing, the bearing is arranged at the port of the spraying tank body and is fixedly sleeved at the outer edge of the port of the spraying tank body, a toothed ring is arranged at the periphery of the bearing and is fixedly sleeved at the bearing, and the toothed ring is meshed and connected to the driving unit; can be more comprehensive adhere to fixed powder, secondly cushion the air current impact force through multidirectional reflecting plate to avoid high flow rate solid powder when the softer work piece surface of contact texture, because of the release of the impact force between the solid, the impaired problem in work piece surface that leads to.

Description

Electrostatic powder spraying equipment for surface of electronic component and spraying method thereof

Technical Field

The invention relates to the field of electrostatic powder spraying, in particular to electrostatic powder spraying equipment and a spraying method for the surface of an electronic component.

Background

Electrostatic spraying utilizes the principle of high-voltage electrostatic corona electric field, a metal diversion cup on a spray gun head is connected with high-voltage negative electricity, a coated workpiece is grounded to form a positive electrode, a strong electrostatic field is formed between a spray gun and the workpiece, when carrier gas (compressed air) sends powder coating to the diversion cup of the spray gun from a powder supply barrel through a powder conveying pipe, dense charges are generated around the powder coating, the powder is charged with negative charges, the powder is uniformly adsorbed on the workpiece under the action of the electrostatic force and the compressed air, and the uniform, continuous, flat and smooth coating is formed through heating and powder melting and curing (or plasticizing).

When the existing electrostatic powder spraying equipment is used for spraying a workpiece with complex lines, powder is difficult to attach to a groove, a detail rotation position and an inward contraction position of the workpiece, and then after spraying, a coating at the position is different in thickness compared with other positions, so that the problem of unsatisfactory spraying effect is caused.

Disclosure of Invention

The invention aims to provide electrostatic powder spraying equipment and a spraying method for the surface of an electronic component, so as to solve the technical problems.

In order to solve the technical problems, the invention adopts the following technical scheme: electronic components surface powder electrostatic spraying equipment, including spraying jar body and drive unit, its characterized in that: the spraying tank body is characterized in that a driving unit is fixedly connected to the annular side wall of the spraying tank body, a rotary spraying component is arranged at the port of the spraying tank body, and the rotary spraying component is connected to the driving unit in a meshed mode;

the rotary spraying assembly comprises a bearing, the bearing is arranged at the port of the spraying tank body and is fixedly sleeved at the outer edge of the port of the spraying tank body, a toothed ring is arranged at the periphery of the bearing and is fixedly sleeved at the bearing, and the toothed ring is meshed and connected to the driving unit; the front end of the gear ring is connected with a multi-directional reflecting plate, and the multi-directional reflecting plate extends into the spraying tank body; and spraying structures are symmetrically fixed at two ends of the multidirectional reflecting plate and are in rolling contact with the annular inner wall of the spraying tank body.

Preferably, the multidirectional reflection plate comprises a reflection cup, a curved plate and a U-shaped plate, the curved plate is arranged in the spraying tank body, the front end of the curved plate is connected with the U-shaped plate, and the other end of the U-shaped plate is fixedly connected to the front end face of the toothed ring; the U-shaped plate and the curved plate are not in contact with the spraying tank body, and a plurality of reflecting cups are arranged on the surface of the curved plate in an equal interval mode in a cavity facing the spraying tank body.

Preferably, the reflection cup comprises a threaded rod, a cup body and a cone-like cavity, a plurality of groove positions are arranged at the bottom end of the curved plate in an equal division manner, the threaded rod is bolted in the groove positions, one end of the threaded rod is connected with the cup body, and the cone-like cavity is arranged in the cup body; the big port at the quasi-conical cavity faces outwards.

Preferably, a support frame is arranged below the spraying tank body, and the spraying tank body is erected and fixed to the top end of the support frame; the spraying tank body comprises a tank body and strip-shaped rods, and the strip-shaped rods are uniformly distributed and fixed in the tank body in an annular distribution manner; the spraying structure is in rolling contact with the tank body and the strip-shaped rod.

Preferably, the spraying structure comprises a spray gun and a bearing frame, the bearing frame comprises whistle plates and hanging rods, the hanging rods are symmetrically arranged at two ends of the multidirectional reflection plate, the whistle plates are fixed at the front end and the rear end of each hanging rod, and the thin ends of the whistle plates are fixedly connected to the side walls of the multidirectional reflection plate; a plurality of spray guns are arranged between the whistle-shaped plates and are sleeved at the hanging rod.

Preferably, the spray gun comprises a spray pipe, a sleeve frame and a magnetic roller, the sleeve frame is sleeved at the hanging rod, one end of the sleeve frame is connected with the spray pipe, and the spray pipe points to the multi-directional reflecting plate; the other end of the sleeve frame is provided with a U-shaped frame, a magnetic attraction roller is arranged in the U-shaped frame, and the magnetic attraction roller is rotatably connected to the U-shaped frame.

Preferably, the roller is inhaled to magnetism includes magnet tube and rubber ring cover, the magnet tube rotates to be connected to in the U-shaped frame, and the peripheral symmetry of magnet tube is provided with the rubber ring cover, and the rubber ring cover cup joints fixedly to magnet tube department to the rubber ring cover is rolling contact form for jar internal wall and bar.

The spraying method of the electrostatic powder spraying equipment for the surface of the electronic component is characterized in that: the spraying method of the electrostatic powder spraying equipment for the surface of the electronic component is as follows:

1) placing a workpiece in a spraying tank body, performing grounding treatment, starting a driving unit, and connecting the driving unit to a toothed ring in a meshing manner, so that a multidirectional reflection plate connected with the toothed ring is placed in the spraying tank body to rotate;

2) in the process of rotating, the spraying structures symmetrically arranged at the two ends of the multidirectional reflecting plate can spray solid powder with negative charges to the surface of the multidirectional reflecting plate, and then the solid powder is subjected to universal reflection through the multidirectional emitting plate, so that the fixed powder with the negative charges can be incident to the surface of a workpiece without dead angles, and the workpiece is subjected to all-dimensional spraying treatment.

The invention has the beneficial effects that:

1. the invention carries out universal reflection on the solid powder through the multidirectional transmitting plate, so that the fixed powder with negative charges can be incident to the surface of a workpiece without dead angles, and thus, the workpiece is sprayed in all directions.

2. The magnetic attraction roller can perform alternate jumping motion on the inner wall of the tank body based on the fact that the spraying structure is in a rotating state relative to the spraying tank body, the spraying pointing position of the spraying pipe alternately swings relative to the multidirectional reflection plate in the alternate jumping motion, the incident angle of the solid powder is adjusted in the swinging process, the reflection angle of the solid powder is changed, and in the change, a more comprehensive spraying treatment effect is achieved.

Drawings

FIG. 1 is a schematic structural diagram of an electrostatic powder spraying device for the surface of an electronic component according to the present invention;

FIG. 2 is a schematic perspective view of the present invention;

FIG. 3 is a schematic front view of the spray can of the present invention;

FIG. 4 is a schematic structural diagram of a multi-directional reflector according to the present invention;

FIG. 5 is a schematic cross-sectional view of a reflector cup according to the present invention;

FIG. 6 is a schematic structural view of a spray structure according to the present invention;

FIG. 7 is a schematic view of the construction of the loading frame of the present invention;

FIG. 8 is a schematic view of the structure of the lance of the present invention;

FIG. 9 is a schematic view of a magnetic roller according to the present invention;

reference numerals: 1. a drive unit; 2. rotating the spray assembly; 3. spraying the tank body; 4. a support frame; 21. a multi-directional reflection plate; 22. a bearing; 23. a toothed ring; 24. spraying a structure; 211. a reflective cup; 212. a curved plate; 213. a U-shaped plate; 2111. a threaded rod; 2112. a cup body; 2113. a quasi-conical cavity; 241. a spray gun; 242. a carrier; 2411. a nozzle; 2412. sleeving a frame; 2413. magnetically attracting the roller; 2421. a whistle plate; 2422. a hanging rod; 31. a tank body; 32. a bar-shaped rod.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easily understood, the invention is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.

Specific embodiments of the present invention are described below with reference to the accompanying drawings.

Example 1

As shown in fig. 1-3, the electrostatic powder spraying equipment for the surface of the electronic component comprises a spraying tank body 3 and a driving unit 1, and is characterized in that: the annular side wall of the spraying tank body 3 is fixedly connected with a driving unit 1, a rotary spraying component 2 is arranged at the port of the spraying tank body 3, and the rotary spraying component 2 is connected to the driving unit 1 in a meshed manner;

the rotary spraying component 2 comprises a bearing 22, the bearing 22 is arranged at the port of the spraying tank body 3, the bearing 22 is fixedly sleeved at the outer edge of the port of the spraying tank body 3, a toothed ring 23 is arranged at the periphery of the bearing 22, the toothed ring 23 is fixedly sleeved at the bearing 22, and the toothed ring 23 is connected to the driving unit 1 in a meshing manner; the front end of the gear ring 23 is connected with a multi-directional reflecting plate 21, and the multi-directional reflecting plate 21 extends into the spraying tank body 3; the two ends of the multi-directional reflecting plate 21 are symmetrically fixed with the spraying structures 24, and the spraying structures 24 are in rolling contact with the annular inner wall of the spraying tank body 3.

In this embodiment, the driving unit 1 is engaged with the gear ring 23, so that the multi-directional reflection plate 21 connected to the gear ring 23 is placed in the spraying tank 3 to rotate, and in the rotating process, the spraying structures 24 symmetrically arranged at two ends of the multi-directional reflection plate 21 can spray solid powder with negative charges onto the surface of the multi-directional reflection plate 21, so that the solid powder is universally reflected by the multi-directional emission plate 21, so that the fixed powder with negative charges can be incident onto the surface of a workpiece without dead angles, and thus the workpiece is subjected to all-directional spraying treatment.

In this embodiment, multidirectional reflecting plate 21 can carry out universal reflection with solid powder on the one hand for workpiece surface slot, detail corner and retraction department can be more comprehensive adhere to fixed powder, secondly cushions the air current impact dynamics through multidirectional reflecting plate 21, thereby avoids high velocity of flow solid powder when the workpiece surface that contacts the texture is softer, because of the release of the impact dynamics between the solid, the damaged problem of workpiece surface that leads to.

Example 2

As shown in fig. 4-5, in the electrostatic powder spraying apparatus for the surface of an electronic component, the multi-directional reflector 21 includes a reflector cup 211, a curved plate 212, and a U-shaped plate 213, the curved plate 212 is disposed in the spraying tank 3, the U-shaped plate 213 is connected to the front end of the curved plate 212, and the other end of the U-shaped plate 213 is fixedly connected to the front end face of the toothed ring 23; the U-shaped plate 213 and the curved plate 212 are not in contact with the spraying tank 3, and a plurality of reflecting cups 211 are equally distributed on the surface of the curved plate 212 in a cavity facing the spraying tank 3; the reflection cup 211 comprises a threaded rod 2111, a cup body 2112 and a cone-like cavity 2113, the bottom end of the curved plate 212 is equally arranged with a plurality of slots, the threaded rod 2111 is bolted in the slots, one end of the threaded rod 2111 is connected with the cup body 2112, and the cup body 2112 is internally provided with the cone-like cavity 2113; the large port at the quasi-conical cavity 2113 faces outward.

In this embodiment, the even embedding of reflection cup 211 is to curved plate 212 surface for the solid powder that spraying structure 24 sprayed can be divided into two kinds of forms reflection, and the powder is arranged in curved plate 212 surface and is reflected promptly, secondly incidenting to carrying out universal reflection in reflection cup 211, the reflection effect of these two kinds of forms, one can carry out normal spraying to the workpiece surface and handle, secondly, it is domatic to be based on class tapered cavity 2113 department in the cup 2112, make the solid powder of different incident angles, can be from different angle reflection, and wherein the effect of different angle reflection, then the process of carrying out the processing of full aspect to the comparatively complicated line of workpiece surface.

Example 3

As shown in fig. 3-9, in the electrostatic powder spraying equipment for the surface of the electronic component, a support frame 4 is arranged below a spraying tank 3, and the spraying tank 3 is erected and fixed on the top end of the support frame 4; the spraying tank body 3 comprises a tank body 31 and strip-shaped rods 32, and the strip-shaped rods 32 are uniformly distributed and fixed in the tank body 31 in an annular shape; the spray structure 24 is in rolling contact with the can 31 and the bar 32.

The spraying structure 24 comprises a spray gun 241 and a bearing frame 242, the bearing frame 242 comprises a whistle board 2421 and a hanging rod 2422, the hanging rod 2422 is symmetrically arranged at two ends of the multidirectional reflection board 21, the whistle boards 2421 are fixed at the front end and the rear end of the hanging rod 2422, and the thin end at the whistle board 2421 is fixedly connected to the side wall of the multidirectional reflection board 21; a plurality of spray guns 241 are arranged among the whistle-shaped plates 2421, and the spray guns 241 are sleeved at the hanging rods 2422; the spray gun 241 comprises a spray pipe 2411, a sleeve frame 2412 and a magnetic suction roller 2413, wherein the sleeve frame 2412 is sleeved at the hanging rod 2422, one end of the sleeve frame 2412 is connected with the spray pipe 2411, and the spray pipe 2411 points to the multidirectional reflection plate 21; the other end of the sleeve frame 2412 is provided with a U-shaped frame, a magnetic roller 2413 is arranged in the U-shaped frame, and the magnetic roller 2413 is rotationally connected to the U-shaped frame; the magnetic roller 2413 includes a magnetic pipe and a rubber ring sleeve, the magnetic pipe is rotatably connected to the inside of the U-shaped frame, the rubber ring sleeves are symmetrically arranged on the periphery of the magnetic pipe, the rubber ring sleeves are fixedly connected to the magnetic pipe, and the rubber ring sleeves are in rolling contact with the inner wall of the tank 31 and the bar-shaped rod 32.

In this embodiment, the spraying mechanism 24 is in rolling contact with the inner wall of the spraying tank 3, and in the rolling contact, the magnetic roller 2413 can roll on the inner wall of the tank 31 based on the sleeve frame 2412 being sleeved on the hanging rod 2422, and when the magnetic roller 2413 is magnetically attracted to the inner wall of the spraying tank 3, the spraying pointing position of the spraying pipe 2411 can jump relative to the multi-directional reflection plate 21 by the magnetic roller 2413 when rolling to the bar-shaped rod 32, so that the incident angle of the solid powder is adjusted during the jumping process, the reflection angle of the solid powder is changed, and in the change, a more comprehensive spraying treatment effect is achieved.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. Electronic components surface powder electrostatic spraying equipment is including spraying jar body (3) and drive unit (1), its characterized in that: the annular side wall of the spraying tank body (3) is fixedly connected with a driving unit (1), a rotary spraying component (2) is arranged at the port of the spraying tank body (3), and the rotary spraying component (2) is connected to the driving unit (1) in a meshing manner;

the rotary spraying assembly (2) comprises a bearing (22), the bearing (22) is arranged at the port of the spraying tank body (3), the bearing (22) is fixedly sleeved at the outer edge of the port of the spraying tank body (3), a toothed ring (23) is arranged on the periphery of the bearing (22), the toothed ring (23) is fixedly sleeved at the bearing (22), and the toothed ring (23) is connected to the driving unit (1) in a meshing manner; the front end of the gear ring (23) is connected with a multi-directional reflecting plate (21), and the multi-directional reflecting plate (21) extends into the spraying tank body (3); and the two ends of the multidirectional reflecting plate (21) are symmetrically fixed with spraying structures (24), and the spraying structures (24) are in rolling contact with the annular inner wall of the spraying tank body (3).

2. The electrostatic powder spraying equipment for the surfaces of electronic components as claimed in claim 1, wherein: the multidirectional reflection plate (21) comprises a reflection cup (211), a curved plate (212) and a U-shaped plate (213), the curved plate (212) is arranged in the spraying tank body (3), the front end of the curved plate (212) is connected with the U-shaped plate (213), and the other end of the U-shaped plate (213) is fixedly connected to the front end face of the gear ring (23); the U-shaped plate (213) and the curved plate (212) are not in contact with the spraying tank body (3), and a plurality of reflecting cups (211) are equally distributed on the surface of the curved plate (212) in a cavity facing the spraying tank body (3).

3. The electrostatic powder spraying equipment for the surfaces of electronic components as claimed in claim 2, wherein: the reflection cup (211) comprises a threaded rod (2111), a cup body (2112) and a cone-like cavity (2113), a plurality of groove positions are arranged at the bottom end of the curved plate (212) in an equal part manner, the threaded rod (2111) is bolted in the groove positions, one end of the threaded rod (2111) is connected with the cup body (2112), and the cone-like cavity (2113) is arranged in the cup body (2112); the big port at the quasi-conical cavity (2113) faces outwards.

4. The electrostatic powder spraying equipment for the surfaces of electronic components as claimed in claim 1, wherein: a support frame (4) is arranged below the spraying tank body (3), and the spraying tank body (3) is erected and fixed to the top end of the support frame (4); the spraying tank body (3) comprises a tank body (31) and strip-shaped rods (32), and the strip-shaped rods (32) are uniformly fixed in the tank body (31) in an annular distribution shape; the spraying structure (24) is in rolling contact with the tank body (31) and the strip-shaped rod (32).

5. The electrostatic powder spraying equipment for the surfaces of electronic components as claimed in claim 4, wherein: the spraying structure (24) comprises a spray gun (241) and a bearing frame (242), the bearing frame (242) comprises whistle plates (2421) and hanging rods (2422), the hanging rods (2422) are symmetrically arranged at two ends of the multidirectional reflection plate (21), the whistle plates (2421) are fixed at the front end and the rear end of each hanging rod (2422), and the thin ends of the whistle plates (2421) are fixedly connected to the side wall of the multidirectional reflection plate (21); a plurality of spray guns (241) are arranged between the whistle-shaped plates (2421), and the spray guns (241) are sleeved on the hanging rods (2422).

6. The electrostatic powder spraying equipment for the surfaces of electronic components as claimed in claim 5, wherein: the spray gun (241) comprises a spray pipe (2411), a sleeve frame (2412) and a magnetic suction roller (2413), the sleeve frame (2412) is sleeved at the hanging rod (2422), one end of the sleeve frame (2412) is connected with the spray pipe (2411), and the spray pipe (2411) points to the multidirectional reflection plate (21); the other end of the sleeve frame (2412) is provided with a U-shaped frame, a magnetic attraction roller (2413) is arranged in the U-shaped frame, and the magnetic attraction roller (2413) is rotatably connected to the U-shaped frame.

7. The electrostatic powder spraying equipment for the surfaces of electronic components as claimed in claim 6, wherein: the magnetic roller (2413) comprises a magnetic pipe and a rubber ring sleeve, the magnetic pipe is rotatably connected into the U-shaped frame, the rubber ring sleeve is symmetrically arranged on the periphery of the magnetic pipe and fixedly sleeved on the magnetic pipe, and the rubber ring sleeve is in rolling contact with the inner wall of the tank body (31) and the strip-shaped rod (32).

8. The spraying method of the electrostatic powder spraying equipment for the surfaces of the electronic components as claimed in claim 1, characterized in that: the spraying method of the electrostatic powder spraying equipment for the surface of the electronic component is as follows:

1) placing a workpiece in a spraying tank body, performing grounding treatment, starting a driving unit, and connecting the driving unit to a toothed ring in a meshing manner, so that a multidirectional reflection plate connected with the toothed ring is placed in the spraying tank body to rotate;

2) in the process of rotating, the spraying structures symmetrically arranged at the two ends of the multidirectional reflecting plate can spray solid powder with negative charges to the surface of the multidirectional reflecting plate, and then the solid powder is subjected to universal reflection through the multidirectional emitting plate, so that the fixed powder with the negative charges can be incident to the surface of a workpiece without dead angles, and the workpiece is subjected to all-dimensional spraying treatment.

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