CN211463559U - Spraying device for reducing plate strip edge spraying thickness - Google Patents
Spraying device for reducing plate strip edge spraying thickness Download PDFInfo
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- CN211463559U CN211463559U CN201922193046.0U CN201922193046U CN211463559U CN 211463559 U CN211463559 U CN 211463559U CN 201922193046 U CN201922193046 U CN 201922193046U CN 211463559 U CN211463559 U CN 211463559U
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Abstract
The utility model provides a reduce spraying device of slab band edge spraying thickness, include and treat the powder spraying mechanism that the spraying face is relative and the jet-propelled mechanism relative with the non-spraying face of slab band with the slab band, powder spraying mechanism includes a plurality of spray guns that spray powder, and the spray gun spout orientation of spraying powder is treated the spraying face, and jet-propelled mechanism includes two spray guns, and both sides department on the slab band width direction is equipped with spray gun respectively, and each spray gun spout is towards the relatively close unilateral edge of slab band width direction upper distance. The utility model discloses an in the spraying operation in-process, to the both sides edge injection gas on the width direction of the non-spraying face of slab band, make gaseous both sides on the width direction of slab band, sweep to treating spraying face place direction by non-spraying face place direction, will be about to the part and will adhere to but still will not adhere to the powder of treating the both sides portion department on the width direction of spraying face in the slab band and sweep away to effectively reduce the thickness of the adnexed powder of slab band portion, thereby make the slab band surface powder spraying thickness everywhere even.
Description
Technical Field
The utility model belongs to the technical field of the powder electrostatic spraying technique and specifically relates to indicate a reduce spraying device of slab band edge spraying thickness.
Background
In the existing electrostatic powder spraying process, a sprayer is provided with a high-voltage electrostatic electric field, so that sprayed powder carries charges, and the plate strip is grounded, so that the powder sprayed by the sprayer and carrying the charges is equivalent to a positive pole of a power supply, and the plate strip is equivalent to a zero pole. Due to the attraction of the electric field, the powder which is sprayed out by the sprayer and carries charges is easily combined with the surface of the plate strip and is adhered to the surface of the plate strip; and the charged powder adheres more readily to the strip where the electric field is strong. For the metal surface, the electric field is much stronger at the tip than at the smooth part, so that the plate strip edge is the sharpest part in the whole structure, and the electric field intensity at the plate strip edge is the strongest. The charge-carrying powder is more likely to collect towards the edges of the strip. Therefore, for powder electrostatic spraying, the powder absorbed by the edge of the interrupted steel plate and the edge of the steel coil (strip) is more, so that the paint film in the range of 1-2 mm from the edge of the strip after heating and baking is obviously thickened and is much thicker than the middle part of the surface of the strip.
The problems that the baked finished color-coated sheets have uneven thickness and uneven height in the length and width range when being stacked and uniform packaging cannot be realized neatly and reasonably are caused, uniform-width steel coils which are rolled together have inconsistent thickness in the width range in the process of rolling the strips, the rolling diameters are inconsistent, the appearances are ugly, the edges of the strips are easy to bulge and deform, and the strips are unqualified in whole rolling and are treated as waste products.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a reduce spraying device of slab band edge spraying thickness can effectively reduce the thickness of the adnexed powder in slab band edge at spraying operation in-process to make the slab band surface powder spraying thickness everywhere even, improve the homogeneity of toasting back slab band surface paint film thickness, guarantee product quality.
In order to achieve the above object, the utility model provides a reduce spraying device of slab band edge spraying thickness, wherein, reduce the spraying device of slab band edge spraying thickness include at least a set ofly with treat the relative powder spraying mechanism that sets up of spraying surface and at least a set ofly with the relative air jet system that sets up of non-spraying surface of slab band, powder spraying mechanism includes a plurality of edges the spray gun that sprays that the width direction interval arrangement of slab band set up, each spray gun's spout all moves towards the treating spraying surface of slab band, air jet system includes two at least air jet spray guns, is close to the both sides department on the width direction of slab band is equipped with at least one respectively air jet spray gun, and each spray gun's spout moves towards respectively the nearer one side edge of distance in the width direction of slab band.
The spraying device for reducing the spraying thickness of the plate strip edge, wherein the range of the gas spraying gun spraying gas to the non-spraying surface is located in the area corresponding to the range of the powder spraying mechanism spraying powder to the surface to be sprayed.
The spraying device for reducing the spraying thickness of the edges of the plate strip is characterized in that the vertical distance between the nozzle of each air spraying gun and the non-spraying surface is 10-180 mm.
The spraying device for reducing the spraying thickness of the edges of the plate strip is characterized in that the air injection pressure of each air injection spray gun is 0.15-0.75 MPa.
The spraying device for reducing the spraying thickness of the edges of the plate strip is characterized in that an included angle of 10-90 degrees is formed between the gas spraying direction of each gas spraying gun and the non-spraying surface in the state that the nozzle of each gas spraying gun vertically corresponds to the non-spraying surface; and under the condition that the nozzle of each air injection spray gun vertically corresponds to the position except the non-spraying surface in the plane of the non-spraying surface, an included angle of 0-60 degrees is formed between the air injection direction of each air injection spray gun and the non-spraying surface.
The spraying device for reducing the thickness of the edge of the strip to be sprayed is characterized in that in the state that the nozzle of each air spray gun vertically corresponds to the non-spraying surface, the distance between the nozzle of each air spray gun and a plane perpendicular to the non-spraying surface and on which one side edge of the strip in the width direction is closer to the nozzle of each air spray gun is positioned is less than or equal to 90 mm; and under the condition that the nozzle of each air spraying gun vertically corresponds to the position except the non-spraying surface in the plane of the non-spraying surface, the distance between the nozzle of each air spraying gun and the plane, perpendicular to the non-spraying surface, of the edge on one side in the width direction of the plate strip close to the nozzle of each air spraying gun is smaller than or equal to 45 mm.
The spraying device for reducing the spraying thickness of the edge of the plate strip is characterized in that the powder spraying mechanism and the air injection mechanism are respectively provided with a plurality of groups, the plurality of groups of powder spraying mechanisms are arranged at intervals along the length direction of the plate strip, and the plurality of groups of air injection mechanisms are arranged at intervals along the length direction of the plate strip.
The spraying device for reducing the spraying thickness of the edges of the plate strips is characterized in that the air injection mechanism is provided with 2 to 5 groups.
Compared with the prior art, the utility model has the advantages as follows:
the utility model discloses an in the spraying operation in-process, to the both sides edge injection gas on the width direction of the non-spraying face of slab band, make gaseous both sides on the width direction of slab band, sweep to treating spraying face place direction by non-spraying face place direction, will be about to attach to but still not attached to the slab band and treat the powder of the two edges on the width direction of spraying face and blow away, thereby effectively reduce the thickness of the adnexed powder in slab band edge, thereby make the slab band surface powder thickness even everywhere, improve the homogeneity of the surface paint film thickness of slab band after toasting, guarantee product quality.
Drawings
The following drawings are only intended to illustrate and explain the present invention schematically, and do not limit the scope of the present invention. Wherein:
fig. 1 is a schematic perspective view of a spraying device for reducing the thickness of the edge of a strip;
fig. 2 is a schematic view of the structure in the direction a in fig. 1.
The reference numbers illustrate:
1. a powder spraying mechanism;
11. a powder spraying gun;
2. an air injection mechanism;
21. a gas injection spray gun;
3. and (4) plate strips.
Detailed Description
In order to clearly understand the technical solution, purpose and effect of the present invention, the detailed embodiments of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, the utility model also provides a spraying device for reducing the thickness of the edge of the plate strip, wherein, the spraying device for reducing the spraying thickness of the edge of the plate strip comprises at least one group of powder spraying mechanisms 1 arranged opposite to the surface to be sprayed of the plate strip 3 and at least one group of air injection mechanisms 2 arranged opposite to the non-spraying surface of the plate strip 3, the powder spraying mechanisms 1 comprise a plurality of powder spraying guns 11 arranged at intervals along the width direction of the plate strip 3, each powder spraying gun 11 is arranged vertical to the surface to be sprayed of the plate strip 3, the nozzle of each powder spraying gun 11 faces the surface to be sprayed of the plate strip 3, the air spraying mechanism 2 comprises at least two air spraying guns 21, at least one air injection spray gun 21 is correspondingly arranged on each of the two sides of the plate strip 3 in the width direction, and the nozzle of each air injection spray gun 21 can face the edges of the two sides of the non-spraying surface in the width direction;
preferably, each of the air injection mechanisms 2 includes two air injection lances 21, and the two air injection lances 21 are disposed near both sides of the strip 3 in the width direction, and nozzles of the two air injection lances 21 face both side edges of the strip 3 in the width direction.
The powder spraying mechanism 1 is used for performing powder electrostatic spraying operation on a to-be-sprayed surface of the plate strip 3, the air spraying mechanism 2 is used for spraying air on edges of two sides of a non-to-be-sprayed surface of the plate strip 3 in the width direction, so that sprayed air is blown to the to-be-sprayed surface from the non-to-be-sprayed surfaces from two sides of the plate strip 3 in the width direction, and part of the sprayed air is about to be attached to the powder on the two edges of the plate strip 3 in the width direction but is not attached to the to-be-sprayed surface.
Preferably, as shown in fig. 1, the utility model provides a spraying device for reducing the thickness of the edge of the plate strip, wherein the range of the gas sprayed by each gas spraying gun 21 to the non-spraying surface is positioned in the area corresponding to the range of the powder spraying mechanism 1 to spray the powder to the surface to be sprayed, thus, the distance between the air injection spray gun 21 and the powder is short, the gas can be effectively ensured to have enough sweeping force to the powder, meanwhile, the blowing direction of the powder by the gas is opposite to the moving direction of the powder sprayed by the powder spraying gun 11, so that the gas blowing direction of the redundant powder at the edge position of the plate strip 3 is basically opposite to the electrostatic attraction direction of the redundant powder, the force of the gas blowing on the powder is balanced with the electrostatic attraction force of the plate strip 3, and then the powder is blown along the direction vertical to the plate strip 3, and the powder blowing effect of the gas can be effectively ensured; if the gas spraying range on the non-spraying surface is set to be a region corresponding to a position outside the powder spraying range on the surface to be sprayed, the powder is blown from a position with a relatively long inclined distance by the blowing gas, and the blowing strength of the gas cannot be ensured in the blowing process;
additionally, will the utility model discloses a when the spraying device that reduces slab band edge spraying thickness combines with the spray booth, because each jet-propelled spray gun 21 to the non-spraying face on spray gaseous scope need with treat that the scope of spraying powder is corresponding on the spraying face, so the utility model discloses a jet-propelled spray gun 21 must set up in the inside of spraying the room, the powder that so is blown up by jet-propelled spray gun 21 only can be in the inside activity of spraying the room, and can not lead to the fact the pollution to spraying the room external environment.
As preferred, the utility model provides a reduce spraying device of slab band edge spraying thickness, wherein, the perpendicular distance between the spout of each jet-propelled spray gun 21 and the non-spraying face is 10mm ~ 180mm, and the jet-propelled pressure of each jet-propelled spray gun 21 is 0.15MPa ~ 0.75Mpa to guarantee that gas has sufficient intensity when the both sides edge of arrival slab band 3 sweeps the powder.
Preferably, the present invention provides a spraying apparatus for reducing the thickness of the edge of a strip, wherein, in a state where the nozzle of each air injection lance 21 vertically corresponds to a non-spraying surface, the vertical correspondence here means that a perpendicular to a plane where the non-spraying surface is located, which is made by the center of the nozzle of each air injection lance 21, is located in the non-spraying surface, that is, a projection of the center of the nozzle of each air injection lance 21 to the plane where the non-spraying surface is located in the non-spraying surface, and an included angle of 10 ° to 90 ° is formed between the gas ejection direction of each air injection lance 21 and the non-spraying surface; in a state where the nozzle opening of each air injection lance 21 vertically corresponds to a position other than (a) the non-spraying surface in the plane where the non-spraying surface is located, the vertical correspondence here means that a foot of a perpendicular line perpendicular to the plane where the non-spraying surface is located, which is made by the center of the nozzle opening of each air injection lance 21, is located at a position other than the non-spraying surface in the plane where the non-spraying surface is located, that is, a projection of the center of the nozzle opening of each air injection lance 21 onto the plane where the non-spraying surface is located outside the non-spraying surface, and an included angle of 0 to 60 degrees is formed between the gas ejection direction of each air injection lance 21 and the non-spraying surface, so as to ensure a powder blowing effect by the ejected.
Preferably, the utility model provides a reduce spraying device of slab band edge spraying thickness, wherein, under the state that the spout of each air injection spray gun 21 corresponds with non-spraying face vertically (the perpendicular corresponding relation please see above, no longer describe here), the distance between the perpendicular to non-spraying face plane that the nearer side edge of the distance on the width direction of each air injection spray gun 21 spout and slab band 3 is located is less than or equal to 90 mm; in a state that the nozzle of each air injection spray gun 21 vertically corresponds to a position other than the position of the non-spraying surface in the plane where the non-spraying surface is located (the vertical correspondence relationship is referred to above, and is not described herein again), the distance between the nozzle of each air injection spray gun 21 and the plane perpendicular to the non-spraying surface where the side edge of the strip 3 closer in the width direction is located is less than or equal to 45mm, or it can be understood that the distance between the projection point of each air injection position on the non-spraying surface of the strip and the width edge of the strip is-45 mm to 90mm, where a negative value indicates that the projection of the air injection position on the non-spraying surface of the strip is located outside the non-spraying surface, and a positive value indicates that the projection of the air injection position on the non-spraying surface of the strip is located inside the non-spraying surface, so as to ensure the powder purging effect of the air injected by each air.
As preferred, the utility model provides a reduce spraying device of slab band edge spraying thickness, wherein, powder spraying mechanism 1 and air jet system 2 all are equipped with the multiunit, and multiunit powder spraying mechanism 1 sets up along the length direction interval arrangement of slab band 3, and multiunit air jet system 2 sets up along the length direction interval arrangement of slab band 3 to improve the efficiency of 3 powder electrostatic spraying operations of slab band.
As preferred, the utility model provides a reduce spraying device of slab band edge spraying thickness, wherein, air jet system 2 is equipped with 2 groups ~ 5 groups to guarantee air jet system 2 to the effect of sweeping of powder.
In the above embodiments and the accompanying drawings, the case where the strip is horizontally disposed (i.e., horizontally disposed) is taken as an example for description, and in addition, the strip 3 may be in a vertical state, a state inclined with an included angle (the included angle is not equal to 90 °) with respect to a horizontal plane, and the like, and the powder spray guns 11 in the powder spraying mechanism 1 and the air spray guns 21 in the air spraying mechanism 2 may be adjusted according to the installation direction of the strip 3 to maintain the direction perpendicular or approximately perpendicular to the strip, but the present invention is not limited thereto.
Compared with the prior art, the utility model has the advantages as follows:
the utility model discloses an in the spraying operation in-process, to the both sides edge injection gas on the width direction of the non-spraying face of slab band, make gaseous both sides on the width direction of slab band, sweep to treating spraying face place direction by non-spraying face place direction, will be about to attach to but still not attached to the slab band and treat the powder of the two edges on the width direction of spraying face and blow away, thereby effectively reduce the thickness of the adnexed powder in slab band edge, thereby make the slab band surface powder thickness even everywhere, improve the homogeneity of the surface paint film thickness of slab band after toasting, guarantee product quality.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention.
Claims (8)
1. The spraying device for reducing the spraying thickness of the edge of the plate strip is characterized by comprising at least one group of powder spraying mechanisms and at least one group of air spraying mechanisms, wherein the powder spraying mechanisms are arranged opposite to the surface to be sprayed of the plate strip, the at least one group of air spraying mechanisms are arranged opposite to the non-spraying surface of the plate strip, the powder spraying mechanisms comprise a plurality of powder spraying guns arranged at intervals along the width direction of the plate strip, the nozzles of the powder spraying guns face the surface to be sprayed of the plate strip, the air spraying mechanisms comprise at least two air spraying guns, at least one air spraying gun is arranged at the position close to two sides of the plate strip in the width direction, and the nozzles of the air spraying guns face the edge of one side close to the width direction of the plate strip.
2. A strip edge coating thickness reducing apparatus according to claim 1, wherein a range in which each of the gas spray guns sprays gas onto the non-coating surface is located in a region corresponding to a range in which the powder coating mechanism sprays powder onto the surface to be coated.
3. A strip edge coating thickness reducing coating apparatus as claimed in claim 1 or claim 2, wherein the vertical distance between the nozzle of each air-jet gun and the non-coating surface is 10mm to 180 mm.
4. The spraying device for reducing the spraying thickness of the edge of the plate strip as claimed in claim 3, wherein the air injection pressure of each air injection gun is 0.15MPa to 0.75 MPa.
5. The spraying device for reducing the spraying thickness of the plate strip edge as claimed in claim 3, wherein an included angle of 10-90 degrees is formed between the gas spraying direction of each gas spraying gun and the non-spraying surface in a state that the nozzle of each gas spraying gun vertically corresponds to the non-spraying surface; and under the condition that the nozzle of each air injection spray gun vertically corresponds to the position except the non-spraying surface in the plane of the non-spraying surface, an included angle of 0-60 degrees is formed between the air injection direction of each air injection spray gun and the non-spraying surface.
6. The coating apparatus for reducing the thickness of a coated strip edge according to claim 3, wherein, in a state where the nozzle of each of the air-jet guns vertically corresponds to the non-coated surface, a distance between the nozzle of each of the air-jet guns and a plane perpendicular to the non-coated surface, on which a side edge of the strip in the width direction is located at a short distance, is less than or equal to 90 mm; and under the condition that the nozzle of each air spraying gun vertically corresponds to the position except the non-spraying surface in the plane of the non-spraying surface, the distance between the nozzle of each air spraying gun and the plane, perpendicular to the non-spraying surface, of the edge on one side in the width direction of the plate strip close to the nozzle of each air spraying gun is smaller than or equal to 45 mm.
7. The spraying device for reducing the spraying thickness of the edge of the plate strip as claimed in claim 3, wherein the powder spraying mechanism and the air injection mechanism are provided with a plurality of groups, the plurality of groups of powder spraying mechanisms are arranged at intervals along the length direction of the plate strip, and the plurality of groups of air injection mechanisms are arranged at intervals along the length direction of the plate strip.
8. The spraying device for reducing the spraying thickness of the edge of the plate strip according to claim 7, wherein the air spraying mechanism is provided with 2 groups to 5 groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922193046.0U CN211463559U (en) | 2019-12-09 | 2019-12-09 | Spraying device for reducing plate strip edge spraying thickness |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922193046.0U CN211463559U (en) | 2019-12-09 | 2019-12-09 | Spraying device for reducing plate strip edge spraying thickness |
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| Publication Number | Publication Date |
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| CN211463559U true CN211463559U (en) | 2020-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922193046.0U Active CN211463559U (en) | 2019-12-09 | 2019-12-09 | Spraying device for reducing plate strip edge spraying thickness |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116273630A (en) * | 2023-02-15 | 2023-06-23 | 广东宝冠板材科技有限公司 | Color-coated plate production line |
-
2019
- 2019-12-09 CN CN201922193046.0U patent/CN211463559U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116273630A (en) * | 2023-02-15 | 2023-06-23 | 广东宝冠板材科技有限公司 | Color-coated plate production line |
| CN116273630B (en) * | 2023-02-15 | 2024-02-27 | 广东宝冠板材科技有限公司 | Color-coated plate production line |
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