Fixed-point powder electrostatic spraying and curing device

Abstract

The utility model relates to a fixed-point powder electrostatic spraying and curing device, which belongs to the technical field of electrostatic spraying and comprises a conveying device, and two U-shaped frames are arranged on the outer side of the conveying device. According to the fixed-point powder electrostatic spraying and curing device, a metal container is conveyed to the opposite sides of the front side clamping plate and the rear side clamping plate through the conveying device, the metal container is clamped and fixed, a powder pump and a first electric push rod can be started, then powder is sprayed out through at least two discharging nozzles, and the powder is sprayed to the welding position of the metal container; the clamping plates on the front side and the rear side are grounded through ground wires, then the metal container is grounded, coating particles can release static electricity, the subsequently-sprayed powder coating with high-voltage static electricity can be combined on the powder coating on the bottom layer more easily, and the situation that powder is scattered due to mutual repulsion of the same charges is avoided; and therefore, the thickness of the powder coating at the to-be-sprayed part of the metal container can be increased.

Description

Technical Field

[0001] The utility model relates to the technical field of electrostatic spraying, in particular to a fixed-point powder electrostatic spraying and curing device. Background Technique

[0002] In the production and manufacturing of metal packaging, some containers are equipped with corresponding metal accessories. These metal accessories are either welded to the body wall of the container or welded to the lid. During the welding process, the coating or film layer on the inner surface of the container will be damaged. Therefore, it is necessary to use paint to touch up the welded area to protect the damaged coating surface.

[0003] When using paint to touch up the welded area, generally traditional spraying uses liquid paint to protect the damaged coating surface. In the prior art, it is generally difficult to spray liquid paint thickly. When sprayed too thickly, dripping will occur, which will affect the aesthetics of spraying. When the sprayed coating is not thick enough, it will affect the protection effect of the coating, thus reducing the practicability. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a fixed-point powder electrostatic spraying and curing device, which has the advantages of being able to perform fixed-point powder electrostatic spraying on the welded area to improve the spraying effect, etc., and solves the problems that it is generally difficult to spray liquid paint thickly, dripping will occur when sprayed too thickly, which will affect the aesthetics of spraying, and when the sprayed coating is not thick enough, it will affect the protection effect of the coating, thus reducing the practicability.

[0005] To achieve the above object, the utility model provides the following technical solution: A fixed-point powder electrostatic spraying and curing device, including a conveying device, there are two U-shaped frames arranged on the outside of the conveying device, a spraying mechanism is arranged on the back of the conveying device, and heating mechanisms are arranged on the top walls of the inner cavities of the left and right U-shaped frames;

[0006] The spraying mechanism includes a support frame arranged on the back of the conveying device, a first electric push rod is assembled on the top wall of the inner cavity of the support frame, a mounting plate is fixed on the outside of the output shaft of the first electric push rod, a discharge plate is arranged on the lower surface of the mounting plate, chutes are opened on the left and right sides of the back wall of the inner cavity of the support frame, sliders are slidably connected inside the chutes, the fronts of the left and right sliders are fixedly connected to the left and right sides of the back of the mounting plate, a powder tank is arranged on the upper surface of the right U-shaped frame, and a connecting component is arranged on the upper surface of the powder tank.

[0007] Further, the connecting component includes a powder pump assembled on the upper surface of the powder tank. An input pipe is fixed to the input end of the powder pump. The bottom end of the input pipe penetrates through the powder tank and extends into the interior. An activity pipe is fixed to the output end of the powder pump. The bottom end of the activity pipe penetrates through the mounting plate and communicates with the upper surface of the discharge plate. A connecting plate is arranged on the front surface of the conveying device. Second electric push rods are assembled on the opposite sides of the support frame and the connecting plate. The outer sides of the output shafts of the front and rear second electric push rods slidably penetrate through the connecting plate and the support frame and extend to the opposite sides. Clamping plates are arranged on the outer sides of the output shafts of the second electric push rods.

[0008] Further, the slider makes a linear up-and-down movement inside the chute.

[0009] Further, the discharge plate includes a rectangular hollow plate, and no less than two discharge nozzles are communicated with the lower surface of the rectangular hollow plate.

[0010] Further, the heating mechanism includes a third electric push rod arranged on the top wall of the inner cavity of the left and right U-shaped frames. A cover body is arranged on the outer side of the output shaft of the third electric push rod. Telescopic rods are fixed to the left and right sides of the top wall of the inner cavity of the U-shaped frame. The bottom ends of the telescopic rods are fixedly connected with the upper surface of the cover body. An electromagnetic heating plate is assembled on the top wall of the inner cavity of the cover body.

[0011] Further, the telescopic rod includes a first sliding rod, and a second sliding rod is slidably connected inside the first sliding rod.

[0012] Further, the third electric push rod is located on the longitudinal central axis of the U-shaped frame.

[0013] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0014] 1. For this fixed-point powder electrostatic spraying and curing device, the metal container is conveyed to the opposite side of the front and rear clamping plates through the conveying device, and the metal container is clamped and fixed. The powder pump and the first electric push rod can be started, and then sprayed through no less than two discharge nozzles and sprayed onto the welding part of the metal container. The front and rear clamping plates are grounded through the ground wire, and then the metal container is grounded. The paint particles will release static electricity, and the subsequent powder paint with high-voltage static electricity will be more easily combined with the underlying powder paint without the situation of powder scattering due to mutual repulsion of like charges. Furthermore, the thickness of the powder paint at the spraying part of the metal container can be increased.

[0015] 2. For this fixed-point powder electrostatic spraying and curing device, place the metal container on the upper surface of the conveying device. The metal container can be conveyed to the right through the conveying device. By starting the third electric push rod on the left, the cover can be driven to move downward and cover the metal container. At this time, by starting the electromagnetic heating plate, the welded part of the metal container inside the cover can be preheated. The preheating temperature is usually between 130°C and 160°C. After spraying, the conveying device transports the metal container into the inside of the U-shaped frame on the right, and starts the third electric push rod on the right to drive the cover on the right to cover the metal container. Then start the electromagnetic heating plate to heat the sprayed metal container to heat and keep warm the sprayed powder coating, so that the powder coating is cured, improving the stability of the combination of the powder coating. The heating temperature is usually between 200°C and 260°C, and the heat preservation time is between 15 seconds and 25 seconds. The covers on the left and right sides can prevent heat loss and improve the heating effect. Brief Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the present utility model;

[0017] Figure 2 It is a schematic diagram of the spraying mechanism of the present utility model;

[0018] Figure 3 It is a schematic diagram of the heating mechanism of the present utility model;

[0019] Figure 4 It is a three-dimensional schematic diagram of the cover of the present utility model.

[0020] In the figure: 1 conveying device, 2 U-shaped frame, 3 spraying mechanism, 301 support frame, 302 first electric push rod, 303 mounting plate, 304 discharge plate, 305 chute, 306 slider, 307 powder tank, 308 powder pump, 309 input pipe, 310 movable pipe, 311 connecting plate, 312 second electric push rod, 313 clamping plate, 4 heating mechanism, 401 third electric push rod, 402 cover, 403 telescopic rod, 404 electromagnetic heating plate. Detailed Embodiment

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figure 1, a fixed-point powder electrostatic spraying and curing device in this embodiment includes a conveying device 1. There are two U-shaped frames 2 arranged outside the conveying device 1. A spraying mechanism 3 is arranged on the back of the conveying device 1. The spraying mechanism 3 can perform fixed-point powder electrostatic spraying on the welding joint to improve the spraying effect. The top walls of the inner cavities of the left and right U-shaped frames 2 are provided with heating mechanisms 4, and the heating mechanisms 4 can avoid heat loss and improve the heating effect.

[0023] Please refer to Figure 2 , in order to perform fixed-point powder electrostatic spraying on the welding joint to improve the spraying effect, in this embodiment, the spraying mechanism 3 includes a support frame 301 arranged on the back of the conveying device 1. The top wall of the inner cavity of the support frame 301 is equipped with a first electric push rod 302. The outside of the output shaft of the first electric push rod 302 is fixed with a mounting plate 303. The lower surface of the mounting plate 303 is provided with a discharge plate 304.

[0024] , in this embodiment, sliding grooves 305 are opened on both the left and right sides of the back wall of the inner cavity of the support frame 301. Sliders 306 are slidably connected inside the sliding grooves 305. The fronts of the left and right sliders 306 are fixedly connected to the left and right sides of the back of the mounting plate 303. A powder tank 307 is arranged on the upper surface of the right U-shaped frame 2, and a connection component is arranged on the upper surface of the powder tank 307.

[0025] , in this embodiment, the connection component includes a powder pump 308 assembled on the upper surface of the powder tank 307. The input end of the powder pump 308 is fixed with an input pipe 309. The bottom end of the input pipe 309 penetrates through the powder tank 307 and extends to the inside. The output end of the powder pump 308 is fixed with a movable pipe 310. The bottom end of the movable pipe 310 penetrates through the mounting plate 303 and communicates with the upper surface of the discharge plate 304. A connecting plate 311 is arranged on the front of the conveying device 1. Second electric push rods 312 are assembled on the opposite sides of the support frame 301 and the connecting plate 311.

[0026] , in this embodiment, the outside of the output shafts of the front and rear second electric push rods 312 all slidably penetrate through the connecting plate 311 and the support frame 301 and extend to the opposite side. Clamping plates 313 are arranged on the outside of the output shafts of the second electric push rods 312.

[0027] , in this embodiment, the sliders 306 move linearly up and down inside the sliding grooves 305. The discharge plate 304 includes a rectangular hollow plate. The lower surface of the rectangular hollow plate is communicated with no less than two discharge nozzles. The metal container is conveyed to the opposite side of the front and rear clamping plates 313 through the conveying device 1. At this time, the front and rear second electric push rods 312 can be started simultaneously to drive the front and rear clamping plates 313 to clamp and fix the metal container. At this time, the powder pump 308 and the first electric push rod 302 can be started. The powder pump 308 conveys the powder inside the powder tank 307 to the inside of the discharge plate 304 through the pipeline and the movable pipe 310.

[0028] It should be noted that the output shaft of the first electric push rod 302 drives the discharge plate 304 to move downward and move to the upper side of the welding part of the metal container, and then sprays through no less than two discharge nozzles and sprays towards the welding part of the metal container. The clamping plates 313 on the front and rear sides are grounded through the ground wire, and then the metal container is grounded. The coating particles will release static electricity, and the subsequently sprayed powder coating with high-voltage static electricity will be more easily combined with the underlying powder coating without the situation of powder scattering due to mutual repulsion of the same kind of charges. Thus, the thickness of the powder coating at the part to be sprayed on the metal container can be increased.

[0029] Please refer to Figures 3 to 4 , in order to avoid heat loss and improve the heating effect, in this embodiment, the heating mechanism 4 includes a third electric push rod 401 arranged on the top wall of the inner cavity of the left and right U-shaped frames 2. The outer side of the output shaft of the third electric push rod 401 is provided with a cover body 402. Both sides of the top wall of the inner cavity of the U-shaped frame 2 are fixed with telescopic rods 403. The bottom end of the telescopic rod 403 is fixedly connected with the upper surface of the cover body 402. The top wall of the inner cavity of the cover body 402 is equipped with an electromagnetic heating plate 404. The electromagnetic heating plate 404 is a device that uses the principle of electromagnetic induction to heat metal objects. It usually consists of an electromagnetic coil, a controller, and a cooling system. When an electric current passes through the electromagnetic coil, an alternating magnetic field will be generated around it. This alternating magnetic field can penetrate the non-metal surface and induce an electric current to flow in the metal object, thereby generating heat.

[0030] In this embodiment, the telescopic rod 403 includes a first sliding rod, and a second sliding rod is slidably connected inside the first sliding rod. The third electric push rod 401 is located on the longitudinal central axis of the U-shaped frame 2. After spraying, the conveying device 1 transports the metal container into the inner part of the right U-shaped frame 2, and starts the third electric push rod 401 on the right side to drive the cover body 402 on the right side to cover the metal container, and then starts the electromagnetic heating plate 404 to heat the sprayed metal container.

[0031] It should be noted that it is used to heat and keep warm the sprayed powder coating to cure the powder coating and improve the stability of the combination of the powder coating. The heating temperature is usually between 200 °C and 260 °C, and the heat preservation time is between 15 seconds and 25 seconds.

[0032] The working principle of the above embodiment is as follows:

[0033] The metal container can be placed on the upper surface of the conveying device 1. The metal container can be conveyed to the right through the conveying device 1. By starting the third electric push rod 401 on the left, the cover body 402 can be driven to move downward and cover the metal container. At this time, by starting the electromagnetic heating plate 404, the welding part of the metal container inside the cover body 402 can be preheated. The preheating temperature is usually between 130°C and 160°C. After preheating, start the third electric push rod 401 on the left to drive the cover body 402 on the left to move upward. Then, the metal container is conveyed by the conveying device 1 to the side opposite to the front and rear clamping plates 313. At this time, the second electric push rods 312 on the front and rear sides can be started simultaneously to drive the front and rear clamping plates 313 to clamp and fix the metal container. At this time, the powder pump 308 and the first electric push rod 302 can be started. The powder pump 308 conveys the powder inside the powder tank 307 to the inside of the discharge plate 304 through the pipeline and the movable pipe 310. The output shaft of the first electric push rod 302 drives the discharge plate 304 to move downward and move to the upper side of the welding part of the metal container, and then it is sprayed out through no less than two discharge nozzles and sprayed onto the welding part of the metal container. The front and rear clamping plates 313 are grounded through the ground wire, and then the metal container is grounded. The coating particles will release static electricity, and the subsequently sprayed powder coating with high-voltage static electricity will be more likely to adhere to the underlying powder coating and will not scatter due to the mutual repulsion of like charges. Thus, the thickness of the powder coating at the part to be sprayed on the metal container can be increased.

[0034] After spraying, the conveying device 1 conveys the metal container into the inside of the right U-shaped frame 2, and starts the third electric push rod 401 on the right to drive the cover body 402 on the right to cover the metal container. Then, start the electromagnetic heating plate 404 to heat the sprayed metal container to heat and keep warm the sprayed powder coating to cure the powder coating and improve the stability of the powder coating combination. The heating temperature is usually between 200°C and 260°C, and the heat preservation time is between 15 seconds and 25 seconds.

[0035] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of another identical element in the process, method, article or device including the said element.

[0036] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model.

Claims

1. A fixed-point powder electrostatic spraying and curing device, comprising a conveying device (1), characterized in that: Two U-shaped frames (2) are arranged on the outside of the conveying device (1), a spraying mechanism (3) is arranged on the back of the conveying device (1), and heating mechanisms (4) are arranged on the top walls of the inner cavities of the U-shaped frames (2) on the left and right sides; The spraying mechanism (3) comprises a support frame (301) arranged on the back side of the conveying device (1); the top wall of the inner cavity of the support frame (301) is equipped with a first electric push rod (302); a mounting plate (303) is fixed to the outer side of the output shaft of the first electric push rod (302); a discharge plate (304) is arranged on the lower surface of the mounting plate (303); a slide groove (305) is provided on the left and right sides of the back wall of the inner cavity of the support frame (301); a slider (306) is slidably connected inside the slide groove (305); the front sides of the sliders (306) on the left and right sides are fixedly connected to the left and right sides of the back side of the mounting plate (303); a powder tank (307) is provided on the upper surface of the right U-shaped frame (2); and a connecting component is provided on the upper surface of the powder tank (307).

2. A fixed-point powder electrostatic spraying and curing device according to claim 1, characterized in that: The connecting assembly comprises a powder pump (308) mounted on the upper surface of the powder tank (307); an input pipe (309) is fixed to the input end of the powder pump (308); the bottom end of the input pipe (309) penetrates the powder tank (307) and extends to the inside; a movable pipe (310) is fixed to the output end of the powder pump (308); the bottom end of the movable pipe (310) penetrates the mounting plate (303) and communicates with the upper surface of the discharge plate (304); a connecting plate (311) is arranged on the front of the conveying device (1); a second electric push rod (312) is mounted on the side of the support frame (301) opposite to the connecting plate (311); the outer sides of the output shafts of the second electric push rods (312) slide through the connecting plate (311) and the support frame (301) and extend to the opposite side; a clamping plate (313) is arranged on the outer side of the output shaft of the second electric push rod (312).

3. The fixed-point powder electrostatic spraying and curing device according to claim 1 is characterized in that: The slider (306) moves linearly up and down inside the slide groove (305).

4. The fixed-point powder electrostatic spraying and curing device according to claim 1, characterized in that: The discharge plate (304) comprises a rectangular hollow plate, and the lower surface of the rectangular hollow plate is connected to no less than two discharge nozzles.

5. The fixed-point powder electrostatic spraying and curing device according to claim 1 is characterized in that: The heating mechanism (4) comprises a third electric push rod (401) arranged on the top wall of the inner cavity of the left and right U-shaped frames (2); a cover body (402) is arranged on the outer side of the output shaft of the third electric push rod (401); telescopic rods (403) are fixed on the left and right sides of the top wall of the inner cavity of the U-shaped frame (2); the bottom end of the telescopic rod (403) is fixedly connected to the upper surface of the cover body (402); and the top wall of the inner cavity of the cover body (402) is equipped with an electromagnetic heating plate (404).

6. A fixed-point powder electrostatic spraying and curing device according to claim 5, characterized in that: The telescopic rod (403) comprises a first sliding rod, and the interior of the first sliding rod is slidably connected to a second sliding rod.

7. The fixed-point powder electrostatic spraying and curing device according to claim 5, characterized in that: The third electric push rod (401) is located on the longitudinal center axis of the U-shaped frame (2).

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