Powder spraying device

Abstract

The utility model relates to a powder spraying device which comprises a workbench, a door-shaped frame is fixedly connected to the workbench, a collecting assembly is arranged on the door-shaped frame, a dust suction fan is arranged on the collecting assembly, a dust suction pipe is arranged on the dust suction fan, the dust suction fan communicates with the collecting assembly through the dust suction pipe, and a material box and a powder pumping machine are arranged on the collecting assembly. A powder pipe is arranged between the material box and the powder pumping machine, the material box and the powder pumping machine are connected through the powder pipe, a powder spraying box is arranged in the collecting assembly, a plurality of sprayers are arranged in the length direction of the powder spraying box at equal intervals, a material pipe is arranged on the material box, one end of the material pipe is detachably connected to the material box, and the other end of the material pipe is detachably connected to the powder pumping machine. The door-shaped frame is provided with a driving piece enabling the collecting assembly to be close to or away from the workbench. The device has the effect of reducing waste of the powder and pollution to the environment.

Description

Technical Field

[0001] This application relates to the technical field of spraying equipment, and in particular to a powder spraying device. Background Art

[0002] A printing press is a machine for printing words and images. When the printing press is used for multicolor printing of paper, the ink on the multicolor printed paper accumulates thickly, making it difficult for the ink on the paper to dry quickly. And the paper output end of the printing press quickly outputs the printed paper and stacks the printed paper at the paper output end of the printing press. At this time, the ink on the stacked papers is likely to be scratched due to the incompletely dried ink, thus smudging the words and patterns on the paper. In order to prevent the words and patterns on the paper from being scratched by the incompletely dried ink, the staff usually installs a powder spraying machine at the paper output end of the printing press, and sprays a layer of printing powder on the printing surface of the printed paper through the powder spraying machine to accelerate the drying of the ink on the paper surface.

[0003] The Chinese patent with the publication number CN205009746U discloses a powder spraying device for a printing press. The device includes: a powder storage generator provided with a plurality of powder outlets, and a control valve is provided at each of the powder outlets; a plurality of powder outlet pipes, each of the powder outlet pipes is communicated with a corresponding powder outlet; a plurality of powder spraying pipes, each of the powder spraying pipes is communicated with a corresponding powder outlet pipe, each of the powder spraying pipes has a powder spraying inlet and a powder spraying outlet, the powder spraying inlet is communicated with the corresponding powder outlet pipe, and the diameter of the powder spraying outlet is larger than the diameter of the powder spraying inlet; a baffle is provided at the powder spraying outlet and is slidably connected to the powder spraying pipe to block or open the powder spraying outlet of the powder spraying pipe.

[0004] However, after powder is sprayed on the paper, except for the parts required for the pattern, a large amount of powder is not utilized and is dispersed in the air, which not only causes waste of powder, increases the expenditure on powder materials, but also pollutes the environment.

[0005] Utility Model Content

[0006] In order to reduce the waste of powder materials and the pollution to the environment, this application provides a powder spraying device.

[0007] The powder spraying device provided by this application adopts the following technical solutions:

[0008] A powder spraying device, comprising a workbench, a gantry fixed to the workbench, a collection assembly provided on the gantry, a dust suction fan provided on the collection assembly, a dust suction pipe provided on the dust suction fan, the dust suction fan being communicated with the collection assembly through the dust suction pipe, a material box and a powder extraction machine provided on the collection assembly, a powder pipe being provided between the material box and the powder extraction machine and being connected through the powder pipe, a powder spraying box provided in the collection assembly, and a plurality of nozzles being equidistantly provided along the length direction of the powder spraying box, a material pipe being provided on the material box, one end of the material pipe being detachably connected to the material box, and the other end being detachably connected to the powder extraction machine, and a driving member for moving the collection assembly closer to or away from the workbench being provided on the gantry.

[0009] By adopting the above technical solution, when the powder extraction machine is started, the powder in the material box is conveyed into the powder spraying box through the powder pipe, and after passing through the nozzles, it is evenly sprayed on the paper on the workbench. Then, the dust suction fan is started, and the dust suction fan can suck the excess powder and dust into the collection assembly, thereby reducing the waste of the powder and reducing the pollution to the environment, and the powder collected by the collection assembly can be reused, thereby improving the recycling rate of the powder.

[0010] Optionally, the collection assembly includes a shield, a left baffle and a right baffle. The cross-section of the shield is U-shaped. The left baffle and the right baffle are respectively detachably connected to both sides of the shield. A dust suction cavity is provided inside the left baffle. The left baffle includes a plate body and a plate cover. The plate cover is detachably connected to the plate body. An air inlet is provided on one side of the plate body close to the right baffle, and an air suction port is provided on the side far from the right baffle. One end of the dust suction pipe is detachably connected to the dust suction fan, and the other end is detachably connected to the air inlet of the left baffle.

[0011] By adopting the above technical solution, when the driving member drives the collection assembly to abut against the workbench surface, the shield, the left baffle, the right baffle and the workbench surface form a closed cavity, avoiding the escape of dust during work and further reducing the pollution to the environment caused by dust. The left baffle includes a plate body and a plate cover, and the plate cover is detachably connected to the plate body, thereby improving work efficiency. When the dust is sucked into the dust suction cavity in the left baffle by the dust suction fan, it will settle down after a period of time, thereby realizing the effective suction and collection of the excess powder, improving the utilization rate of the powder and reducing the pollution to the environment.

[0012] Optionally, a first filter screen is provided at the air inlet, and a second filter screen is provided at the air suction port. The mesh of the first filter screen is larger than that of the second filter screen.

[0013] By adopting the above technical solution, when the dust suction fan is started, the redundant dust on the product enters the dust suction cavity through the first filter screen at the dust inlet, while the second filter screen at the air suction port blocks the dust in the dust suction cavity, thus ensuring the normal operation of the collection assembly. When the dust suction fan stops working, the first filter screen also effectively prevents the escape of dust in the dust suction cavity, improving the efficiency of powder recovery and the quality of the product.

[0014] Optionally, a cleaning brush is provided in the dust suction cavity. The cross-section of the cleaning brush is U-shaped. A screw rod and a guide rod are rotatably connected to the plate body. The screw rod is threadedly connected to the cleaning brush, and a servo motor for driving the screw rod to rotate is provided on the plate body.

[0015] By adopting the above technical solution, the cleaning brush can move in the dust suction cavity, effectively cleaning the dust in the left baffle, preventing dust from blocking the dust inlet and the air suction port, and improving the dust suction effect. The cleaning brush is driven by a servo motor and moves on the guide rod through the rotation of the screw rod, which can not only ensure the stability and efficiency of the cleaning process, but also collect and recycle the powder adhered to the inner side wall of the dust suction cavity, further improving the recovery efficiency.

[0016] Optionally, a drying cavity is provided inside the right baffle. An electric heating wire is provided in the drying cavity. An air outlet is provided on the side of the right baffle close to the left baffle, and an air inlet is provided on the side far from the left baffle. A hair dryer is detachably connected to the protective cover. A hot air pipe is provided on the hair dryer. One end of the hot air pipe is detachably connected to the right baffle, and the other end is detachably connected to the hair dryer.

[0017] By adopting the above technical solution, when spraying powder on the product, the electric heating wire in the drying cavity heats the air, and then the hot air is blown into the closed cavity formed by the protective cover, the left baffle, the right baffle and the workbench surface through the air outlet by the hair dryer, thereby accelerating the drying speed of the ink on the product surface, reducing the scratching phenomenon caused by the undried ink, and improving the printing quality.

[0018] Optionally, a perspective window is provided on the cover plate.

[0019] By adopting the above technical solution, through the perspective window, the operator can see the height of the powder accumulation in the cover plate, and then timely recycle the powder in the cover plate, which is convenient for the secondary utilization of the powder, thus improving the work efficiency and further reducing the waste of the powder.

[0020] Optionally, a contact plate is provided inside the protective cover. A plurality of connecting rods are fixedly connected to the side of the contact plate away from the workbench. The connecting rods pass through the protective cover and are slidably connected to the protective cover. A limiting block is fixedly connected to the side of the connecting rod away from the contact plate. A tightening member is provided between the contact plate and the protective cover, and the tightening member is sleeved on the connecting rod.

[0021] By adopting the above technical solution, when powder spraying the product, first, the driving member drives the collecting device to move downward. At this time, the abutting plate first abuts against the product. Then, the driving member continues to press down, so that the collecting assembly contacts the workbench. When the collecting assembly abuts against the workbench, the tightening member is in a compressed state, thereby providing a tightening force to the abutting plate, so that the product is pressed by the abutting plate, thereby reducing the deformation or displacement of the product caused by the operation of the hair dryer and the dust suction fan, and thus reducing the quality of the product.

[0022] Optionally, a rubber pad is provided on the side of the abutting plate close to the workbench.

[0023] By adopting the above technical solution, the rubber pad can avoid the direct contact between the abutting plate and the product, thereby further improving the quality of the product.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. When the powder suction machine is started, the powder in the material box is conveyed to the powder spraying box through the powder pipe, and after passing through the nozzle, it is evenly sprayed on the paper on the workbench. Then, the dust suction fan is started, and the dust suction fan can suck the excess powder and dust into the collecting assembly, thereby reducing the waste of the powder and reducing the pollution to the environment, and the powder collected by the collecting assembly can be used again, thereby improving the recycling rate of the powder;

[0026] 2. When the driving member drives the collecting assembly to abut against the workbench surface, the protective cover, the left baffle, the right baffle and the workbench surface form a closed cavity, avoiding the escape of dust during work, and further reducing the pollution to the environment caused by dust. The left baffle includes a plate body and a plate cover, and the plate cover is detachably connected to the plate body, thereby improving work efficiency. When the dust is sucked into the dust suction cavity in the left baffle by the dust suction fan, it will settle down after a period of time, thereby realizing the effective suction and collection of the excess powder, improving the utilization rate of the powder, and reducing the pollution to the environment;

[0027] 3. When spraying powder on the product, the electric heating wire in the drying cavity is used to heat the air, and then the hot air is blown into the closed cavity formed by the protective cover, the left baffle, the right baffle and the workbench surface from the air outlet by the hair dryer, thereby accelerating the drying speed of the ink on the paper surface, reducing the scratching phenomenon caused by the undried ink, and thus improving the printing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of a powder spraying device.

[0029] Figure 2 is a schematic sectional view of the collecting assembly.

[0030] Figure 3 It is an exploded schematic diagram of the right baffle.

[0031] Figure 4 is Figure 2 a partial enlarged view of the position A in

[0032] Explanation of reference numerals: 1, workbench; 11, gantry; 12, driving member; 2, collection assembly; 21, shield; 211, dust suction fan; 212, hair dryer; 213, dust suction pipe; 22, left baffle; 221, plate body; 2211, dust inlet; 2212, suction port; 222, plate cover; 2221, perspective window; 223, dust suction cavity; 224, cleaning brush; 225, screw; 226, guide rod; 23, right baffle; 231, drying cavity; 232, heating wire; 233, hot air pipe; 234, air outlet; 235, air inlet; 24, material box; 25, powder extraction machine; 26, servo motor; 3, powder spraying box; 31, nozzle; 32, powder pipe; 4, abutting plate; 41, rubber pad; 42, connecting rod; 43, limiting block; 44, abutting member; 5, first filter screen; 6, second filter screen. Detailed implementation manners

[0033] The following further elaborates on this application in conjunction with the attached Figures 1-4 drawings.

[0034] The embodiment of this application discloses a powder spraying device.

[0035] Referring to Figure 1 and Figure 2 , a powder spraying device includes a workbench 1, and a gantry 11 is fixedly connected to the workbench 1. A collection assembly 2 is provided on the gantry 11, and sliding grooves are formed on both sides of the gantry 11. A slider is fixedly connected to the collection assembly 2, and the collection assembly 2 slides up and down in the sliding grooves of the gantry 11 through the slider. A driving member 12 for moving the collection assembly 2 closer or farther away is provided on the gantry 11, and the driving member 12 is a hydraulic cylinder. A powder spraying box 3 is provided inside the collection assembly 2. A plurality of nozzles 31 are equidistantly arranged on the powder spraying box 3. A material box 24 and a powder extraction machine 25 are provided on the collection assembly 2. A powder pipe 32 is provided directly between the powder extraction machine 25 and the material box 24, and the powder extraction machine 25 is also connected to the powder spraying box 3 through the powder pipe 32. A dust suction fan 211 is provided on the collection assembly 2. A dust suction pipe 213 is detachably connected to the dust suction fan 211, and the dust suction fan 211 is communicated with the collection assembly 2 through the dust suction pipe 213, so that excess powder and dust are sucked into the collection assembly 2.

[0036] Referring to Figure 1 and Figure 2, when the product to be powder-sprayed is placed on the workbench 1, the operator starts the switch, so that the hydraulic cylinder drives the collection assembly 2 to slide along the length direction of the gantry 11. When the collection assembly 2 fits the surface of the workbench 1, the powder extraction machine 25 starts to drive, so that the powder in the material box 24 enters the powder spraying box 3 through the powder pipe 32, and is evenly sprayed on the product through the spray head 31. When the powder spraying is finished, the dust suction fan 211 starts, and the excess powder enters the collection assembly 2 under the action of the dust suction fan 211. Thereby reducing the waste of powder and reducing the pollution to the environment.

[0037] Refer to Figures 1 to 4 , the collection assembly 2 includes a shield 21, a left baffle 22 and a right baffle 23. The cross-section of the shield 21 is U-shaped, and the left baffle 22 and the right baffle 23 are both detachably connected to both sides of the shield 21, so that the whole collection assembly 2 presents a cube with one side open. Dust suction cavities 223 and drying cavities 231 are respectively arranged inside the left baffle 22 and the right baffle 23. The left baffle 22 includes a plate body 221 and a plate cover 222. The plate cover 222 is detachably connected to the plate body 221 by bolts, which is convenient for the operator to assemble and disassemble, and improves the efficiency of later maintenance and installation. And one side of the plate body 221 close to the right baffle 23 is provided with a dust inlet 2211 with a rectangular cross-section, and the side far from the right baffle 23 is provided with a suction port 2212 with a circular cross-section. One end of the dust suction pipe 213 is detachably connected to the suction port 2212, and the other end is detachably connected to the suction port 2212 of the plate body 221. A first filter screen 5 is provided at the dust inlet 2211, and a second filter screen 6 is provided at the suction port 2212, and the mesh holes of the first filter screen 5 are larger than those of the second filter screen 6.

[0038] Refer to Figures 1 to 4 , when the operator makes the collection assembly 2 fit the surface of the workbench 1 through the hydraulic cylinder, at this time, a closed cavity is formed between the surface of the workbench 1 and the collection assembly 2, so that when powder-spraying the product, the powder will not leak out and cause environmental pollution. When the dust suction fan 211 works, the excess powder on the product enters the dust suction cavity 223 through the first filter screen 5. At this time, since the mesh holes of the second filter screen 6 are smaller than those of the first filter screen 5, the powder will be collected in the dust suction cavity 223. When the dust suction fan 211 stops working, the first filter screen 5 can also prevent the escape of dust, keep it in the dust suction cavity 223, and then precipitate, which is convenient for collection and utilization.

[0039] Refer to Figure 1 and Figure 2, an electric heating wire 232 is provided in the drying cavity 231 of the right baffle 23, and a hair dryer 212 is placed on the shield 21. An air outlet 234 is formed on the side of the right baffle 23 close to the left baffle 22, and an air inlet 235 is provided on the side away from the left baffle 22. A hot air duct 233 is provided on the hair dryer 212. One end of the hot air duct 233 is detachably connected to the air inlet 235 on the right baffle 23, and the other end is detachably connected to the hair dryer 212.

[0040] Refer to Figure 1 and Figure 2 , when the dust suction fan 211 sucks the excess powder into the dust suction cavity 223, at this time, the electric heating wire 232 is heated. Then, the operator starts the hair dryer 212, so that the hot air in the drying cavity 231 enters the sealed cavity formed by the collection assembly 2 and the workbench 1 surface, thereby accelerating the drying speed of the ink on the product surface and improving the printing quality.

[0041] Refer to Figures 1 to 4 , a cleaning brush 224 is provided in the dust suction cavity 223 of the left baffle 22, and the cross section of the cleaning brush 224 is U-shaped. A screw rod 225 and a guide rod 226 are respectively rotatably connected to the left baffle 22, and the guide rod 226 is slidably connected to the cleaning brush 224. The screw rod 225 is threadedly connected to the cleaning brush 224. A servo motor 26 for driving the screw rod 225 to rotate is detachably connected to the left baffle 22.

[0042] Refer to Figures 1 to 4 , when the collection assembly 2 is used many times, it is easy for the powder to accumulate on the first filter screen 5 and the second filter screen 6. At this time, the operator drives the servo motor 26 to rotate the screw rod 225. Since the cleaning brush 224 is slidably connected to the guide rod 226, when the screw rod 225 rotates, the cleaning brush 224 slides along the length direction of the left baffle 22, which can not only clean the powder on the first filter screen 5 and the second filter screen 6, but also clean the powder on the inner side wall of the dust suction cavity 223, so as to fall onto the plate cover 222, which is convenient for subsequent recycling.

[0043] Refer to Figure 1 and Figure 3 , a perspective window 2221 is provided on the plate cover 222, and a handle is fixedly connected to the same side of the plate cover 222. When the dust in the dust suction cavity 223 precipitates, it will concentrate on the plate cover 222, and the operator can view the height of the accumulated powder in the plate cover 222 through the perspective window 2221. When the powder accumulates to a certain height, the operator removes the screws connecting the plate cover 222 and the plate body 221, and then takes out the plate cover 222, thereby realizing the reuse of the powder in the plate cover 222. The handle fixedly connected to the plate cover 222 facilitates the operator's grasping, thereby improving the work efficiency.

[0044] Reference Figures 1 to 3 , a contact plate 4 is provided inside the shield 21. A rubber pad 41 is detachably connected to one side of the contact plate 4 close to the surface of the workbench 1. A connecting rod 42 is fixedly connected to the other side away from the surface of the workbench 1. The connecting rod 42 passes through the shield 21 and is slidably connected to the shield 21. A limiting block 43 is fixedly connected to the side of the connecting rod 42 away from the contact plate 4. And a pressing member 44 is provided between the contact plate 4 and the shield 21. The pressing member 44 is a spring.

[0045] Reference Figures 1 to 3 , when the hydraulic cylinder pushes the collection assembly 2 to approach the workbench 1 along the length direction of the gantry 11, the contact plate 4 first contacts the product. Then, when the hydraulic cylinder continues to push downward, the collection assembly 2 abuts against the surface of the workbench 1. At this time, under the action of the shield 21, the pressing member 44 is in a compressed state, so that when sucking the redundant powder on the product and drying the undried ink on the product, the product can be fixed, avoiding the displacement of the product, thereby reducing the quality of the product. And the rubber pad 41 provided on one side of the contact plate 4 close to the surface of the workbench 1 further protects the product. Avoiding the direct contact between the product and the contact plate 4, thereby further improving the quality of the product.

[0046] The implementation principle of a powder spraying device in an embodiment of the present application is as follows:

[0047] The operator first places the product on the workbench 1, and then starts the hydraulic cylinder, so that the hydraulic cylinder pushes the collection assembly 2 to move towards the workbench 1. After a period of time, the contact plate 4 first contacts the product, and then, the collection assembly 2 continues to approach the workbench 1 under the action of the hydraulic cylinder.

[0048] When the shield 21, the left baffle 22 and the right baffle 23 all abut against the surface of the workbench 1, a sealed cavity is formed with the surface of the workbench 1. At this time, the operator starts the powder suction machine 25, and the powder suction machine 25 sucks the powder in the material box 24 into the powder spraying box 3 through the powder pipe 32, and then sprays it evenly on the product through a plurality of nozzles 31.

[0049] Then, the dust suction fan 211 is started. Under the action of the dust suction fan 211, the redundant powder enters the dust suction cavity 223 of the left baffle 22, and then the hair dryer 212 is started, so that the air in the drying cavity 231 dries the ink on the product.

[0050] Finally, when it is necessary to clean the dust suction cavity 223 of the left baffle 22, the operator starts the servo motor 26, so that the cleaning brush 224 makes a reciprocating linear motion in the dust suction cavity 223, so that the powder in the dust suction cavity 223 is concentrated on the plate cover 222. The operator can remove the screws between the plate cover 222 and the plate body 221, so that the plate cover 222 is detached, thus realizing the recycling and reuse of the powder material.

[0051] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A powder spraying device, comprising a workbench, characterized in that, A gantry (11) is fixedly connected to the workbench (1). A collection assembly (2) is provided on the gantry (11). A dust suction fan (211) is provided on the collection assembly (2). A dust suction pipe (213) is provided on the dust suction fan (211). The dust suction fan (211) is communicated with the collection assembly (2) through the dust suction pipe (213). A material box (24) and a powder extraction machine (25) are provided on the collection assembly (2). A powder pipe (32) is provided between the material box (24) and the powder extraction machine (25) and is connected through the powder pipe (32). A powder spraying box (3) is provided inside the collection assembly (2). A plurality of spray nozzles (31) are equidistantly provided along the length direction of the powder spraying box (3). A material pipe is provided on the material box (24). One end of the material pipe is detachably connected to the material box (24), and the other end is detachably connected to the powder extraction machine (25). A driving member (12) for moving the collection assembly (2) closer to or farther away from the workbench (1) is provided on the gantry (11).

2. The powder spraying device according to claim 1, characterized in that, The collection assembly (2) includes a shield (21), a left baffle (22) and a right baffle (23). The cross-section of the shield (21) is U-shaped. The left baffle (22) and the right baffle (23) are respectively detachably connected to both sides of the shield (21). A dust suction cavity (223) is arranged inside the left baffle (22). The left baffle (22) includes a plate body (221) and a plate cover (222). The plate cover (222) is detachably connected to the plate body (221). An air inlet (2211) is formed on one side of the plate body (221) close to the right baffle (23), and an air suction port (2212) is formed on the side far from the right baffle (23). One end of the dust suction pipe (213) is detachably connected to the dust suction fan (211), and the other end is detachably connected to the air inlet (2211) on the left baffle (22).

3. The powder spraying device according to claim 2, characterized in that, A first filter screen (5) is provided at the air inlet (2211), and a second filter screen (6) is provided at the air suction port (2212). The mesh holes of the first filter screen (5) are larger than those of the second filter screen (6).

4. A powder spraying device according to claim 2, characterized in that, A cleaning brush (224) is arranged inside the dust suction cavity (223). The cross-section of the cleaning brush (224) is U-shaped. A screw rod (225) and a guide rod (226) are rotatably connected to the plate body (221). The screw rod (225) is in threaded connection with the cleaning brush (224). A servo motor (26) for driving the screw rod (225) to rotate is provided on the plate body (221).

5. The powder spraying device according to claim 2, wherein, A drying cavity (231) is arranged inside the right baffle (23). An electric heating wire (232) is arranged in the drying cavity (231). An air outlet (234) is formed on one side of the right baffle (23) close to the left baffle (22), and an air inlet (235) is formed on the side far from the left baffle (22). A hair dryer (212) is detachably connected to the protective cover (21). A hot air pipe (233) is arranged on the hair dryer (212). One end of the hot air pipe (233) is detachably connected to the right baffle (23), and the other end is detachably connected to the hair dryer (212).

6. A powder spraying device according to claim 2, characterized in that, A perspective window (2221) is formed on the plate cover (222).

7. The powder spraying device according to claim 2, wherein A contact plate (4) is arranged inside the protective cover (21). A plurality of connecting rods (42) are fixedly connected to the side of the contact plate (4) far from the workbench (1). The connecting rods (42) pass through the protective cover (21) and are slidably connected to the protective cover (21). A limiting block (43) is fixedly connected to the side of the connecting rod (42) far from the contact plate (4). A tightening member (44) is arranged between the contact plate (4) and the protective cover (21). The tightening member (44) is sleeved on the connecting rod (42).

8. A powder spraying device according to claim 7, characterized in that, A rubber pad (41) is arranged on the side of the contact plate (4) close to the workbench (1).

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