CN110201824A - A kind of makeup of Workpiece painting drying integrated is set and its spraying method - Google Patents

Abstract

The invention relates to the technical field of workpiece spraying, in particular to an integrated device for spraying and drying workpieces and a spraying method thereof. It includes a stirring box, a spraying box and an exhaust pipe. The side of the stirring box is provided with a first feeding pipe and a second feeding pipe. The bottom of the stirring box is provided with a third feeding pipe. The stirring box is equipped with suction Material pipe, the spraying box is provided with a semicircular tube cover formed by a plurality of arc-shaped tubes connected together, the suction tube is connected with the semicircular tube cover, and power devices are provided on both sides of the spraying box. The power unit is provided with a rotating telescopic rod near the side of the spraying box, the top of the spraying box is provided with a sealing cover, the sealing cover is provided with a hanging air multiplier, and the bottom of the mixing box is provided with a secondary stirring device. The third feed pipe is arranged at the bottom of the stirring tank, and the third air inlet pipe is provided with a water-based fluorocarbon emulsion with a density lower than water, which can be fully mixed after being stirred by the stirring device.

Description

A workpiece spraying and drying integrated device and its spraying method

technical field

The invention relates to the technical field of workpiece spraying, in particular to an integrated device for spraying and drying workpieces and a spraying method thereof.

Background technique

Fluorocarbon coatings refer to coatings with fluororesin as the main film-forming substance, also known as fluorocarbon coatings, fluorine coatings, fluororesin coatings, etc. Among various coatings, fluororesin coatings have superior properties due to the high electronegativity of the introduced fluorine element and strong carbon-fluorine bond energy. After decades of rapid development, fluorocarbon coatings have been widely used in various fields such as construction, chemical industry, electrical and electronic industry, machinery industry, aerospace industry, and household products. After performance coatings, the highest overall performance coatings. At present, the widely used fluororesin coatings mainly include three types: PTFE, PVDF, and PEVE. Water-based fluorocarbon coatings are generally made by fully stirring water-based fluorocarbon emulsions, dispersants, defoamers, titanium dioxide, regulators, thickeners, film-forming aids, leveling agents and ionized water, while water-based fluorocarbons The density of the emulsion is smaller than that of water. If the water-based fluorocarbon emulsion is not fully mixed, it will stay on the surface of the slurry, resulting in poor performance of the sprayed water-based fluorocarbon film. It is difficult to fully stir the above reagents by ordinary stirring methods.

For semicircular shells (such as safety helmets, helmets) sprayed with water-based fluorocarbon coatings, it has excellent water resistance, super long weather resistance, anti-staining, non-yellowing, anti-alkali, anti-acid rain, anti-salt spray and other effects, the factory for Water-based fluorocarbon coatings are usually sprayed on a large scale, but water-based fluorocarbon coatings have good fluidity after spraying. When drying, fans and air knives are usually used to dry them, because traditional fans use blades to cut air to drive airflow, which is easy to cause The thickness of the water-based fluorocarbon film is not uniform.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies and defects of the prior art, and provide an integrated spraying and drying device and its spraying method that can stir and spray evenly to ensure uniform thickness of the water-based fluorocarbon film.

The purpose of the present invention is achieved through the following technical solutions:

An integrated device for workpiece spraying and drying, including a stirring box, a spraying box and an exhaust pipe, the side of the stirring box is provided with a first feeding pipe and a second feeding pipe, and the bottom of the stirring box is provided with a third feeding pipe tube, the mixing box is equipped with a suction pipe, and the spraying box is provided with a semicircular pipe cover formed by a plurality of arc-shaped pipes, the suction pipe is connected with the semicircular pipe cover, and the spraying box Both sides are equipped with a power device, and the power device is provided with a rotating telescopic rod near the side of the spraying box. There is a hanging air multiplier on the top, the air inlet of the hanging air multiplier is set outside the spraying box, the exhaust pipe is connected with the spraying box, the exhaust pipe extends into the filter pool, and the bottom of the mixing box is set There is a secondary stirring device.

Specifically, the secondary stirring device includes a stirring fan driven by a motor through a rotating shaft and a stirring rod driven by the motor. The stirring rod is arranged below the stirring fan. A segregation plate composed of annular plates, the small rings are superimposed on the large ring in turn, there is a gap between the annular plates, the annular plate is inclined upward at a certain angle towards the side wall of the stirring box, and the stirring rod is Stirring fins are provided, a conical wall is provided on the stirring box below the stirring rod, a release hole is provided on the conical wall, and the third feeding pipe extends into the conical wall.

Specifically, the gap between the annular plates is 5-15 mm, and the annular plates are inclined upward by 3-5° toward the side wall of the mixing tank.

Specifically, paint nozzles are evenly distributed on the arc-shaped tube of the semicircular tube cover.

Specifically, the barb end of the rotating telescopic rod is a hollow tubular rod body, and a limiting block is provided in the hollow tubular rod body, and an elastic buffer block is provided at the end of the barb, and the elastic buffer block is connected to a buffer rod , the buffer rod passes through the limiting block and the end of the buffer rod is provided with a fixed block, and a spring is arranged between the elastic buffering block and the limiting block.

Specifically, a suction pump is provided between the semicircular pipe cover and the suction pipe.

Specifically, the sealing cover and the spraying box are provided as reversible covers.

Specifically, a feed pump is provided on the third feed pipe.

Specifically, the suction pipe is concentric with the rotating shaft.

A workpiece spraying method of an integrated workpiece spraying and drying device, characterized in that:

1) Put dispersant, defoamer, titanium dioxide, regulator, thickener, film-forming aid, and leveling agent into the spraying tank from the first feeding pipe; put ionized water into the spraying tank through the second feeding pipe In the box, at the same time, the motor drives the stirring rod and fan to stir;

2) After the stirring time is 15-20min, the water-based fluorocarbon emulsion enters the stirring tank from the third feeding pipe through the tapered wall at a speed of 10cc/s through the feed pump;

4) Stir for 15 minutes after the water-based fluorocarbon emulsion completely enters the stirring tank;

5) Put the semicircular shell to be sprayed into the spray box with the shell facing up through the external manipulator, so that the barb of the rotating telescopic rod extends into the semicircular casing, and the power device controls the shrinking of the rotating telescopic rod, so that the elastic buffer block will be semicircular The shell is stuck, the manipulator loosens the semicircular shell and moves it out of the spray box, closes the sealing cover, and then the motor drives the stirring rod and the fan to continue stirring;

6) The power unit drives the rotating telescopic rod to rotate so that the shell of the semicircular shell to be sprayed faces down, and the paint nozzle sprays the semicircular shell;

7) After the spraying is completed, close the suction pump, and the power unit drives the rotating telescopic rod to rotate so that the semicircular shell is placed upwards;

8) Connect the hot air to the air inlet of the hanging air multiplier, start the hanging air multiplier, and the hanging air multiplier will dry and solidify the semicircular shell, and the solidified exhaust gas will be discharged into the filter pool through the exhaust pipe;

9) Open the sealing cover, and take out the semicircular shell by an external manipulator;

10) Repeat steps 5) to 9) to repeatedly spray the semicircular shell;

11) When the spraying is completed, stop the motor to drive the stirring rod and the fan leaf for stirring, and close the sealing cover.

Compared with the prior art, the present invention comprises the following advantages and beneficial effects:

(1) the present invention is provided with the 3rd feeding pipe by the bottom of stirring box, and the 3rd air inlet pipe is provided with the water-based fluorocarbon emulsion that feeds density smaller than water, can fully mix through agitating device stirring, is provided with by multiple in spraying box A semi-circular tube cover formed by two arc-shaped tubes connected together, the suction tube is connected with the semi-circular tube cover to fully spray the semi-circular shell, and the sealing cover is provided with a hanging air multiplier, which can complete the spraying The semi-circular shell can be dried continuously and smoothly.

(2) The present invention is provided with secondary stirring device through the bottom of the stirring box, and the secondary stirring device includes a stirring fan driven by a motor through a rotating shaft and a stirring rod driven by a motor, and a plurality of different stirring rods are arranged between the stirring rod and the stirring fan The segregation plate is composed of circular plates with a diameter of 100 mm, the small circular rings are superimposed on the large circular rings in turn, there is a gap between the circular plates, and the circular plates are inclined upward at a certain angle towards the side wall of the mixing tank. The above stirring method can A circulation is formed to thoroughly stir the slurry between the upper and lower layers. When the solid particles sink to the bottom, the stirring rod can be mixed with the water-based fluorocarbon emulsion that enters through the third feeding pipe, so that the stirred liquid rises to the segregation plate. Then achieve the effect of no precipitation and full stirring; the water-based fluorocarbon emulsion enters from the third feeding pipe at the bottom of the stirring tank, which can avoid the effect that the floating surface of the water-based fluorocarbon emulsion cannot be fully mixed.

Description of drawings

Figure 1 is a schematic diagram of the present invention.

Fig. 2 is a flow simulation diagram of the present invention.

Fig. 3 is a partially enlarged view of part a of the present invention.

Fig. 4 is a partially enlarged view of part b of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

As shown in Figures 1 to 4, an integrated device for spraying and drying workpieces includes a stirring box 2, a spraying box 1 and an exhaust pipe 3, and a first feeding pipe 21 and a second feeding pipe 21 are arranged on the side of the stirring box 2. Material pipe 22, the third feeding pipe 23 is provided at the bottom of the stirring box 2, the suction pipe 24 is housed in the stirring box 2, and the spraying box 1 is provided with a plurality of arc-shaped pipes connected together. The semicircular pipe cover 11, the suction pipe 24 communicates with the semicircular pipe cover 11, the two sides of the spraying box 1 are provided with a power unit 12, and the power unit 12 is provided with a rotating telescopic rod 13 near the side of the spraying box 1, The rotating telescopic rod 13 is provided with a barb in the spray box 1, and the top of the spray box 1 is provided with a sealing cover 14, and the sealing cover 14 is provided with a hanging air multiplier 15, and the hanging air multiplier 15 The air inlet is set outside the spraying box 1, the exhaust pipe 3 communicates with the spraying box 1, the exhaust pipe 3 extends into the filter tank, and the bottom of the stirring box 2 is provided with a secondary stirring device. Enter the raw material with density higher than water through the first feed pipe 21, the second feed pipe 22 enters the ionized water, the third feed pipe 23 at the bottom of the mixing tank 2 enters the water-based fluorocarbon emulsion with a density smaller than water, by this The feeding method is then stirred by a secondary stirring device, which can achieve the effect of sufficient and uniform stirring; the sealing cover 14 is provided with a hanging air multiplier 15, which can continuously and smoothly dry the sprayed semicircular shell.

Specifically, the secondary stirring device includes a stirring fan 25 driven by a motor through a rotating shaft and a stirring rod 26 driven by a motor, the stirring rod 26 is arranged below the stirring fan 25, and a There is a segregation plate 27 composed of a plurality of annular plates with different diameters, the small rings are superimposed on the large ring in turn, there is a gap between the annular plates, and the annular plates are inclined upward toward the side wall of the mixing tank 2 At a certain angle, the stirring rod 26 is provided with stirring fins, the stirring box 2 below the stirring rod 26 is provided with a tapered wall, the tapered wall is provided with a release hole, and the third feed pipe 23 extends into the tapered wall. The present invention is provided with two-stage stirring device by stirring box 2 bottoms, and described secondary stirring device comprises the stirring fan 25 that motor drives through the rotating shaft and the stirring bar 26 that motor drives, is provided with between stirring bar 26 and stirring fan 25 A segregation plate 27 composed of annular plates with different diameters, the small rings are superimposed on the large ring in turn, there is a gap between the annular plates, and the annular plates are inclined upward at a certain angle towards the direction of the side wall of the mixing box 2, The above-mentioned stirring method can form a circulation, and thoroughly stir the slurry between the upper and lower layers. When the solid particles sink to the bottom, the stirring rod 26 can mix the water-based fluorocarbon emulsion that enters through the third feeding pipe 23, so that the stirred liquid Rise to the separation plate 27, and then achieve the effect of no precipitation and full stirring; the water-based fluorocarbon emulsion enters from the third feeding pipe 23 at the bottom of the stirring tank 2, which can avoid the effect that the floating surface of the water-based fluorocarbon emulsion cannot be fully mixed. Please refer to Figure 2. Figure 2 is a simulation diagram of liquid flow. When the fans are stirred, the liquid will flow downward. The wall will flow upward and finally flow along the surface of the liquid to the center of the stirring box 2, and finally the liquid will flow to the center due to the action of the leaf fan to form a stirring circulation; please see the lower side of the segregation plate 27, because the stirring rod 26 will pass through the fins. The unmixed solid at the bottom is mixed with the water-based fluorocarbon emulsion, and the mixed liquid will rotate and rise, and then pass through the gap of the segregation plate 27, and be integrated into the stirring circulation. The circulating flow enters under the separating plate 27 to generate turbulent flow with the second stirring rod 26, and also facilitates the liquid under the separating plate 27 to blend into the stirring circulating flow.

Specifically, the gap between the annular plates is 5-15 mm, and the annular plates are inclined upward by 3-5° toward the side wall of the mixing tank 2 . By setting the gap between the annular plates to be 5-15mm, and the annular plates are inclined upward by 3-5° towards the side wall of the stirring tank 2, it can be ensured that the liquid at the bottom is integrated into the stirring circulation at the maximum flow rate and the stirring circulation will not enter below the segregation plate 27.

Specifically, paint nozzles are evenly distributed on the arc-shaped tube of the semicircular tube cover 11 .

Specifically, the barb end of the rotating telescopic rod 13 is a hollow tubular rod body, and a limiting block is arranged in the hollow tubular rod body, and an elastic buffer block 17 is provided at the end of the barb, and the elastic buffer block 17 is connected to There is a buffer rod 18, the buffer rod 18 passes through the limiting block and the end of the buffer rod 18 is provided with a fixed block, and a spring is arranged between the elastic buffering block 17 and the limiting block. The above arrangement can clamp the rotating telescopic rod 13 to the semicircular housing without scratching the inner wall of the semicircular housing.

Specifically, a suction pump is provided between the semicircular pipe cover 11 and the suction pipe 24 .

Specifically, the sealing cover 14 and the spraying box 1 are provided as reversible covers.

Specifically, a feed pump is provided on the third feed pipe 23 .

Specifically, the suction pipe 24 is concentric with the rotating shaft. The place above the rotating shaft is the place with the fastest stirring and circulating flow rate, and also the place where the stirring is most uniform. The suction pipe 24 is concentric with the rotating shaft, and the suction pipe 24 can absorb the evenly stirred water-based fluorocarbon paint.

A workpiece spraying method of an integrated workpiece spraying and drying device:

1) Enter the dispersant, defoamer, titanium dioxide, regulator, thickener, film-forming aid, and leveling agent into the spray tank 1 from the first feed pipe 21; pass the ionized water through the second feed pipe 22 into the spray box 1, while the motor drives the stirring rod 26 and the fan to stir;

2) After the stirring time is 15-20min, the water-based fluorocarbon emulsion enters the stirring tank 2 from the third feed pipe 23 through the tapered wall at a speed of 10cc/s through the feed pump;

4) After the water-based fluorocarbon emulsion completely enters the stirring tank 2, stir for 15 minutes;

5) Put the semicircular shell to be sprayed into the spraying box 1 with the shell facing up through the external manipulator, so that the barb of the rotating telescopic rod 13 extends into the semicircular casing, and the power device 12 controls the contracting of the rotating telescopic rod 13 to make the elastic The buffer block 17 blocks the semicircular shell, the manipulator loosens the semicircular shell and moves it out of the spraying box 1, closes the sealing cover 14, and then the motor drives the stirring rod 26 and the fan leaf to continue stirring;

6) The power unit 12 drives the rotating telescopic rod 13 to rotate so that the shell of the semicircular shell to be sprayed faces downward, and the paint nozzle sprays the semicircular shell;

7) After the spraying is completed, close the suction pump, and the power unit 12 drives the rotating telescopic rod 13 to rotate so that the semicircular shell is placed upwards;

8) Connect the hot air to the air inlet of the hanging air multiplier 15, start the hanging air multiplier 15, and the hanging air multiplier 15 will dry and solidify the semicircular shell, and the solidified waste gas will be discharged into the filter pool through the exhaust pipe 3 ;

9) Open the sealing cover 14, and grab the semicircular shell by an external manipulator;

10) Repeat steps 5) to 9) to repeatedly spray the semicircular shell;

11) Stop the motor to drive the stirring rod 26 and fan leaf to stir after finishing spraying, and close the sealing cover 14.

An integrated device for spraying and drying workpieces can not only carry out agitation and spraying of water-based fluorocarbon coatings, but also can carry out agitation and spraying of substances that require liquid density lower than that of fillers. The specific operation steps are as follows:

1) Enter the raw material with a density higher than that of the filler into the spraying box 1 from the first feeding pipe 21; put the filler into the spraying box 1 through the second feeding pipe 22, and at the same time, the motor drives the stirring rod 26 and the fan to stir;

2) After the stirring time is 20 minutes, the raw material with a density lower than water is passed through the third feed pipe 23 and enters the stirring tank 2 through the tapered wall through the feed pump;

4) Raw materials with a density smaller than water completely enter the mixing tank 2 until fully mixed;

5) Put the semicircular shell to be sprayed into the spraying box 1 with the shell facing up through the external manipulator, so that the barb of the rotating telescopic rod 13 extends into the semicircular casing, and the power device 12 controls the contracting of the rotating telescopic rod 13 to make the elastic The buffer block 17 blocks the semicircular shell, the manipulator loosens the semicircular shell and moves it out of the spraying box 1, closes the sealing cover 14, and then the motor drives the stirring rod 26 and the fan blades to continue stirring;

6) The power unit 12 drives the rotating telescopic rod 13 to rotate so that the shell of the semicircular shell to be sprayed faces downward, and the paint nozzle sprays the semicircular shell;

7) After the spraying is completed, close the suction pump, and the power unit 12 drives the rotating telescopic rod 13 to rotate so that the semicircular shell is placed upwards;

8) Connect the hot air to the air inlet of the hanging air multiplier 15, start the hanging air multiplier 15, and the hanging air multiplier 15 will dry and solidify the semicircular shell, and the solidified waste gas will be discharged into the filter pool through the exhaust pipe 3 ;

9) Open the sealing cover 14, and grab the semicircular shell by an external manipulator;

10) Repeat steps 5) to 9) to repeatedly spray the semicircular shell;

11) Stop the motor to drive the stirring rod 26 and fan blades to stir after finishing the spraying, and close the sealing cover 14.

The above-mentioned embodiments only express the implementation manner of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. A workpiece spraying and drying integrated device is characterized in that: it comprises a stirring box, a spraying box and an exhaust pipe, the side of the stirring box is provided with a first feeding pipe and a second feeding pipe, and the bottom of the stirring box There is a third feed pipe, the mixing box is equipped with a suction pipe, and the spraying box is provided with a semi-circular pipe cover formed by connecting multiple arc-shaped pipes, and the suction pipe is connected with the semi-circular pipe cover The two sides of the spraying box are equipped with a power device, and the side of the power device close to the spraying box is provided with a rotating telescopic rod. The rotating telescopic rod is provided with a barb in the spraying box. Cover, the sealing cover is provided with a hanging air multiplier, the air inlet of the hanging air multiplier is arranged outside the spraying box, the exhaust pipe communicates with the spraying box, and the exhaust pipe extends into the filter pool, The bottom of the stirring box is provided with a secondary stirring device. 2. A workpiece spraying and drying integrated device according to claim 1, characterized in that: the secondary stirring device includes a stirring fan driven by a motor through a rotating shaft and a stirring rod driven by the motor, and the stirring rod is arranged on the stirring rod Below the fan, a segregation plate consisting of a plurality of annular plates with different diameters is arranged between the stirring rod and the stirring fan. The small rings are successively superimposed on the large ring, and there is a gap between the annular plates. The annular plate is inclined upward at a certain angle towards the side wall of the stirring box, the stirring rod is provided with stirring fins, the stirring box below the stirring rod is provided with a tapered wall, and the tapered wall is provided with a release hole , the third feed pipe extends into the tapered wall. 3. An integrated device for workpiece spraying and drying according to claim 2, characterized in that: the gap between the annular plates is 5-15mm, and the annular plates are inclined upward by 3-5 mm toward the side wall of the mixing tank. °. 4 . The integrated device for spraying and drying workpieces according to claim 1 , characterized in that: the arc-shaped tubes of the semicircular tube cover are evenly distributed with paint spray nozzles. 5. A workpiece spraying and drying integrated device according to claim 1, characterized in that: the barb end of the rotating telescopic rod is a hollow tubular rod body, and a limiting block is arranged in the hollow tubular rod body, the The end of the barb is provided with an elastic buffer block, the elastic buffer block is connected with a buffer rod, the buffer rod passes through the limit block and the end of the buffer rod is provided with a fixed block, and a fixed block is provided between the elastic buffer block and the limit block. spring. 6. An integrated device for spraying and drying workpieces according to claim 1, characterized in that: a suction pump is provided between the semicircular pipe cover and the suction pipe. 7 . The integrated device for spraying and drying workpieces according to claim 1 , characterized in that: the sealing cover and the spraying box are flipped. 8 . The integrated device for spraying and drying workpieces according to claim 1 , wherein a feeding pump is provided on the third feeding pipe. 9 . The integrated workpiece spraying and drying device according to claim 2 , wherein the suction pipe is concentric with the rotating shaft. 10. The workpiece spraying method of a workpiece spraying and drying integrated device according to any one of claims 1-9, characterized in that: 1) Put dispersant, defoamer, titanium dioxide, regulator, thickener, film-forming aid, and leveling agent into the spraying tank from the first feeding pipe; put ionized water into the spraying tank through the second feeding pipe In the box, at the same time, the motor drives the stirring rod and fan to stir; 2) After the stirring time is 15-20min, the water-based fluorocarbon emulsion enters the stirring tank from the third feeding pipe through the tapered wall at a speed of 10cc/s through the feed pump; 4) Stir for 15 minutes after the water-based fluorocarbon emulsion completely enters the stirring tank; 5) Put the semicircular shell to be sprayed into the spray box with the shell facing up through the external manipulator, so that the barb of the rotating telescopic rod extends into the semicircular casing, and the power device controls the shrinking of the rotating telescopic rod, so that the elastic buffer block will be semicircular The shell is stuck, the manipulator loosens the semicircular shell and moves it out of the spray box, closes the sealing cover, and then the motor drives the stirring rod and the fan to continue stirring; 6) The power unit drives the rotating telescopic rod to rotate so that the shell of the semicircular shell to be sprayed faces down, and the paint nozzle sprays the semicircular shell; 7) After the spraying is completed, close the suction pump, and the power unit drives the rotating telescopic rod to rotate so that the semicircular shell is placed upwards; 8) Connect the hot air to the air inlet of the hanging air multiplier, start the hanging air multiplier, and the hanging air multiplier will dry and solidify the semicircular shell, and the solidified exhaust gas will be discharged into the filter pool through the exhaust pipe; 9) Open the sealing cover, and take out the semicircular shell by an external manipulator; 10) Repeat steps 5) to 9) to repeatedly spray the semicircular shell; 11) When the spraying is completed, stop the motor to drive the stirring rod and the fan leaf for stirring, and close the sealing cover.