CN111822291A - Powder curing system - Google Patents
Powder curing system Download PDFInfo
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- CN111822291A CN111822291A CN202010772303.0A CN202010772303A CN111822291A CN 111822291 A CN111822291 A CN 111822291A CN 202010772303 A CN202010772303 A CN 202010772303A CN 111822291 A CN111822291 A CN 111822291A
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- workpiece
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
- B05D3/0272—After-treatment with ovens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
- B05D3/0426—Cooling with air
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Abstract
The invention discloses a powder curing system, comprising: a channel type curing oven; the conveyor penetrates through the channel type curing oven and is used for conveying the workpiece to be cured; the rotary storage device is placed on the conveyor; the rotary article placing device comprises a fixed base, a rotary article placing supporting plate and a driving device, the rotary article placing supporting plate is fixedly connected to the fixed base through a rotating shaft, and the driving device drives the rotating shaft to rotate. According to the powder curing system, each spraying surface of the workpiece to be cured is heated more uniformly in the channel type curing furnace, and the thermosetting effect of the coating on the surface of the workpiece can be improved.
Description
Technical Field
The invention relates to the technical field of spraying production, in particular to a powder curing system.
Background
The electrostatic powder spraying process is the cleanest coating technology which can be achieved at present, volatile solvents such as organic solvents, water and the like are not used in the powder coating, pure solids are directly used as the coating, the pollution of the organic solvents to the environment is greatly reduced, and the sprayed powder can be recycled. After the surface of the metal workpiece is coated with powder by adopting an electrostatic powder spraying process, the metal workpiece coated with the powder needs to be transferred to a thermosetting device to carry out curing treatment on the powder coating.
The prior common thermal curing equipment is channel type curing equipment, the channel type curing equipment generally comprises a curing drying tunnel and a workpiece conveying chain, and the conveying chain pulls the workpiece so that the workpiece passes through the high-temperature drying tunnel within the time required by the curing process to finish the powder curing process. The workpiece moves in the channel type curing furnace along with the moving direction of the conveying chain, and curing is completed after the workpiece is heated. When the hot curing equipment is used, the workpiece does not rotate because the workpiece moves relatively in one dimension, so that each spraying surface of the workpiece is heated unevenly, and the hot curing effect of the coating on the surface of the workpiece is influenced finally.
Disclosure of Invention
In order to overcome the above-mentioned deficiencies of the prior art, it is an object of the present invention to provide a powder solidification system.
In order to solve the problems, the invention adopts the following technical scheme:
a powder curing system comprising:
a channel type curing oven;
the conveyor penetrates through the channel type curing furnace and is used for conveying the workpiece to be cured; and
the rotary storage device is placed on the conveyor; the rotary article placing device comprises a fixed base, a rotary article placing supporting plate and a driving device, wherein the rotary article placing supporting plate is fixedly connected to the fixed base through a rotating shaft, and the driving device drives the rotating shaft to rotate.
Preferably, the rotary article placing device is provided with a fixing piece, and the fixing piece is used for fixing the workpiece to be solidified on the rotary article placing supporting plate.
Preferably, the fixing piece is arranged on the rotary article holding supporting plate and comprises a fixing base, a fixing claw and an elastic piece connected between the fixing base and the fixing claw.
Preferably, the fixing part is a positioning column or a positioning clamping groove arranged on the rotary article placing supporting plate.
Preferably, the driving device is arranged inside the fixed base, and the driving device comprises a driving motor and a power supply; the driving motor drives the rotating shaft to rotate, and the power supply supplies electric energy to the driving motor.
Preferably, a plurality of different temperature control areas are arranged in the channel type curing oven.
More preferably, the temperature control region comprises a first heating region, a second heating region and a third heating region, wherein the temperature of the first heating region is lower than that of the second heating region, and the temperature of the second heating region is lower than that of the third heating region.
Preferably, a powder solidifying system of the present invention further comprises at least one passage type temperature reducing furnace, wherein the furnace temperature of the passage type temperature reducing furnace is higher than the ambient air temperature and lower than the temperature of the third heating zone.
More preferably, a fan is arranged in the channel type cooling furnace.
Preferably, the conveyor is a roller conveyor or a chain conveyor or a drag conveyor.
Compared with the prior art, the invention has the technical effects that:
according to the powder curing system, the rotary object placing device is arranged on the conveyor, so that after a workpiece to be cured enters the channel type curing furnace, the workpiece to be cured can move along the moving direction of the conveyor under the transmission of the conveyor and can also rotate under the driving of the rotary object placing device, all spraying surfaces of the workpiece to be cured are heated in the channel type curing furnace more uniformly, and the heat curing effect of the coating on the surface of the workpiece can be improved.
Drawings
FIG. 1 is a schematic diagram of a front view of a powder solidification system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating a top view of a powder solidification system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a side view of a powder solidification system according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a rotary storage device according to an embodiment of the present invention;
fig. 5 is a schematic structural view of another rotatable storage device according to an embodiment of the present invention;
fig. 6 is a schematic structural view of another rotatable storage device according to an embodiment of the present invention.
In the figure, 1, a channel type curing furnace, 2, a conveyor, 3, a rotary object placing device, 4, a fixing part, 5, a temperature control area, 6, a channel type cooling furnace, 7, a fan, 301, a fixed base, 302, a rotary object placing supporting plate, 303, a rotating shaft, 401, a fixed base, 402, a fixed clamping jaw, 403, an elastic part, 404, a positioning column, 405, a positioning clamping groove, 501, a first heating area, 502, a second heating area, 503 and a third heating area.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the invention provides a powder curing system, which has a structure as shown in fig. 1-4. A powder curing system comprises a channel type curing furnace 1, a conveyor 2 and a rotary storage device 3. Conveyer 2 runs through passageway formula curing oven 1, and optional one in roller conveyer, chain conveyor, the drag chain conveyor of conveyer 2 can be used to, and conveyer 2 is used for carrying the work piece of treating the solidification, and high temperature resistant stainless steel preparation is selected for use to conveyer 2's main part material. Rotatory thing device 3 of putting is placed on conveyer 2, and rotatory thing device 3 of putting includes unable adjustment base 301, rotatory thing layer board 302 and the drive arrangement of putting, and rotatory thing layer board 302 of putting passes through pivot 303 fixed connection on unable adjustment base 301, and drive arrangement drives pivot 303 and rotates. The present embodiment exemplarily designs the rotating tray 302 to be circular, but the specific shape of the rotating tray 302 is not limited, and may be changed according to the internal shape of the tunnel-type curing oven 1 and the shape of the workpiece to be cured.
During the use, will wait to solidify the work piece and place on rotatory thing device 3 of putting, conveyer 2 drives rotatory thing device 3 of putting and gradually passes through passageway formula curing oven 1 according to conveyer 2's direction of delivery, and simultaneously, under drive arrangement's drive, the work piece of waiting to solidify of placing on rotatory thing layer board 302 can be rotary motion along with pivot 303.
According to the powder curing system, the rotary object placing device 3 is arranged on the conveyor 2, so that a workpiece to be cured can move along the moving direction of the conveyor 2 under the conveying of the conveyor 2 after entering the channel type curing furnace 1, and can also rotate under the driving of the rotary object placing device 3, so that each spraying surface of the workpiece to be cured is heated more uniformly in the channel type curing furnace 1, and the heat curing effect of the coating on the surface of the workpiece can be improved.
Preferably, the rotating object placing device 3 is provided with a fixing member 4, and the fixing member 4 is used for fixing the workpiece to be solidified on the rotating object placing supporting plate 302. Thus, when the workpiece to be cured makes forward motion and self-rotation motion in the channel-type curing oven 1, the workpiece to be cured can be firmly fixed on the rotary article-holding supporting plate 302 through the fixing piece 4, and the workpiece to be cured is prevented from sliding off the rotary article-holding supporting plate 302.
Preferably, the stationary member 4 is disposed on the rotating tray 302, the stationary member 4 includes a stationary base 401, a stationary jaw 402, and an elastic member 403 connected between the stationary base 401 and the stationary jaw 402, and the elastic member 403 may be made of a spring with a large elastic force, as shown in fig. 2 and 4. Preferably, the fixing members 4 are uniformly disposed on the periphery of the rotary article holding plate 302, and when in use, the workpiece to be cured is placed at the center of the rotary article holding plate 302, and the fixing members 4 located around the periphery firmly clamp the workpiece to be cured on the center of the rotary article holding plate 302 by using the elastic force of the elastic members 403, so as to place the workpiece to slide on the rotary article holding plate 302. The specific shape of the fixing jaw 402 is not limited, and the fixing jaw 402 may be specifically designed according to the shape of the outer surface of the workpiece to be fixed, and preferably, the fixing jaw 402 is made into a profile structure of the workpiece to be cured, so that the fixing jaw 402 can be more firmly attached to the outer surface of the workpiece to be cured. In fig. 2 and 4, the fixing jaw 402 is designed to be a flat plate suitable for fixing a workpiece to be solidified, the outer surface of which is flat.
Preferably, the fixing member 4 is a positioning post 404 or a positioning slot 405 disposed on the rotatable tray 302, and the structure is as shown in fig. 5 and 6. When the fixing member 4 is provided with the positioning columns 404 of fig. 5, corresponding positioning holes need to be reserved on the workpiece to be solidified, the positioning columns 404 on the rotating object placing plate 302 and the positioning holes reserved on the workpiece to be solidified are moved to cooperate to firmly fix the workpiece to be solidified on the rotating object placing plate 302, a plurality of positioning columns 404 can be provided on the rotating object placing plate 302 according to the shape and size of the workpiece to be solidified, and more preferably, the positioning columns 404 are uniformly and circumferentially arranged on the surface of the rotating object placing plate 302. When the fixing member 4 is set to the positioning slot 405 pattern of fig. 6, the workpiece to be cured can be clamped into the positioning slot 405, and the shape of the positioning slot 405 is matched with the shape of part of the workpiece to be cured, so that the workpiece to be cured can be just clamped into the positioning slot 405. The specific arrangement shape of the positioning card slot 405 is not limited, and can be designed specifically according to the external shape and size of the workpiece to be cured. The positioning clamping groove shown in fig. 6 of this embodiment is square, and is suitable for clamping and positioning a to-be-cured workpiece with a square external shape or a square external shape.
Preferably, the driving device is arranged inside the fixed base 301, and the driving device comprises a driving motor and a power supply; the driving motor drives the rotating shaft 303 to rotate, and the power supply supplies electric energy to the driving motor. Because of the whole direction of delivery motion along with conveyer 2 of putting of rotation thing device 3, be in the motion state always, consequently, drive arrangement's structure should be designed small and exquisite, makes it hold in unable adjustment base 301's inside, and the power supply can select for the battery power supply, and drive pivot 303 is rotatory through the drive arrangement drive that sets up in unable adjustment base 301, and then drives the rotation and puts thing layer board 302 and be rotary motion, and then drives to place and wait to solidify the work piece on the rotatory thing layer board 302 of putting and be rotary motion. The specific structure of the driving device is not shown, and an existing rotary driving device can be selected.
The conventional channel type curing furnace 1 is only provided with one temperature control area, the properties of a coating to be cured and a workpiece to be cured are different, the temperature of the temperature control area is generally set to be 150-300 ℃, after the workpiece to be cured enters the temperature control area from the ambient air temperature, the temperature of the surface of the workpiece to be cured is rapidly raised to a high temperature state in a short time due to the high temperature of the temperature control area, the powder coating sprayed on the surface of the workpiece to be cured can be cured when the powder coating does not reach the surface of the workpiece to be cured and is leveled uniformly, and the spraying effect is not ideal. Therefore, preferably, a plurality of different temperature control areas 5 are arranged in the tunnel-type curing oven 1 of the present embodiment, and the defect is eliminated by controlling the temperature of the plurality of different temperature control areas 5 in a sectional manner, so that the workpiece to be cured undergoes a gradual temperature rise process after entering the tunnel-type curing oven 1. More preferably, the temperature-controlled zone 5 includes a first heating zone 501, a second heating zone 502 and a third heating zone 503, the temperature of the first heating zone 501 is lower than that of the second heating zone 502, and the temperature of the second heating zone 502 is lower than that of the third heating zone 503. The temperature of the first heating zone 501 is set to be low, and the workpiece to be cured is preheated; the temperature of the second heating area is moderate, and is a transition heating area; the third heating zone has the highest temperature, so that the curing effect of the powder coating is enhanced.
Preferably, a powder solidifying system of the present invention further comprises at least one tunnel cooling furnace 6, wherein the furnace temperature of the tunnel cooling furnace 6 is higher than the ambient air temperature and lower than the temperature of the third heating zone 503. After the workpiece is thermoset through the third heating zone 503, the temperature of the third heating zone is usually higher than 200 ℃, and at this time, if the cured workpiece is directly placed in the air, the workpiece is rapidly cooled, the temperature difference is large, and the cured workpiece may deform greatly under the severe changes of thermal expansion and cold contraction, and the curing effect of the cured coating on the surface of the workpiece is affected. Therefore, in the embodiment, the channel-type cooling furnace 6 is arranged behind the channel-type curing furnace 1, the temperature in the channel-type cooling furnace 6 is controlled between the ambient air temperature and the heating temperature of the third heating area 503, so that the workpiece is firstly in a relatively high temperature atmosphere, and finally the workpiece is transferred to the ambient air for cooling, that is, a slow cooling process is performed on the thermally cured workpiece, so as to improve the quality of the thermally cured workpiece. If the temperature of the third heating area 503 is about 250 ℃, the temperature in the channel cooling furnace 6 can be set between 100 ℃ and 150 ℃; if the temperature of the third heating area 503 is about 150 ℃, the temperature in the channel cooling furnace 6 can be set between 60 ℃ and 80 ℃. In order to achieve the effect of gradient cooling, the quality of the solidified workpiece, the equipment investment cost and the energy consumption cost can be comprehensively considered, and a plurality of channel type cooling furnaces 6 are arranged.
More preferably, a fan 7 is arranged in the channel cooling furnace 6. After the solidified workpiece enters the channel type cooling furnace 6, the fan 7 can be started to accelerate the air flow in the channel type cooling furnace 6, so that the heat exchange process of the solidified workpiece is accelerated, and the temperature of the solidified workpiece and the temperature in the channel type cooling furnace 6 are balanced as soon as possible.
The present invention is not limited to the above-described specific embodiments, and various modifications and variations are possible. Any modifications, equivalents, improvements and the like made to the above embodiments in accordance with the technical spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. A powder solidification system, comprising:
a channel type curing oven;
the conveyor penetrates through the channel type curing furnace and is used for conveying the workpiece to be cured; and
the rotary storage device is placed on the conveyor; the rotary article placing device comprises a fixed base, a rotary article placing supporting plate and a driving device, wherein the rotary article placing supporting plate is fixedly connected to the fixed base through a rotating shaft, and the driving device drives the rotating shaft to rotate.
2. A powder curing system as recited in claim 1, wherein the rotary placement device has fasteners thereon for securing the workpiece to be cured to the rotary placement plate.
3. A powder curing system as recited in claim 2, wherein the securing member is disposed on the rotating pallet, the securing member including a securing base, a securing jaw, and a resilient member coupled between the securing base and the securing jaw.
4. The powder curing system of claim 2, wherein the securing element is a locating post or a locating slot disposed on the rotating carrier.
5. A powder curing system as recited in claim 1, wherein said drive means is disposed within said stationary base, said drive means including a drive motor and a power source; the driving motor drives the rotating shaft to rotate, and the power supply supplies electric energy to the driving motor.
6. The powder curing system of claim 1, wherein the tunnel curing oven has a plurality of different temperature control zones.
7. The powder consolidation system of claim 6, wherein the controlled temperature zone comprises a first heating zone, a second heating zone, and a third heating zone, wherein the first heating zone has a temperature less than the second heating zone, and wherein the second heating zone has a temperature less than the third heating zone.
8. The powder consolidation system of claim 7, further comprising at least one tunnel oven having an oven temperature greater than ambient air temperature and less than the temperature of the third heating zone.
9. The powder consolidation system of claim 8, wherein a fan is disposed within the tunnel cooler.
10. A powder curing system as claimed in claim 1, wherein the conveyor is a roller conveyor or a chain conveyor or a flight conveyor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010772303.0A CN111822291A (en) | 2020-08-04 | 2020-08-04 | Powder curing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010772303.0A CN111822291A (en) | 2020-08-04 | 2020-08-04 | Powder curing system |
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| CN111822291A true CN111822291A (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010772303.0A Pending CN111822291A (en) | 2020-08-04 | 2020-08-04 | Powder curing system |
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| CN (1) | CN111822291A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113102198A (en) * | 2021-03-12 | 2021-07-13 | 中国联合工程有限公司 | Combined drying system for finish paint and color register process of vehicle parts |
| CN114453220A (en) * | 2022-03-07 | 2022-05-10 | 佛山市涂一机电设备有限公司 | Powder coating drying device and drying method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114453220A (en) * | 2022-03-07 | 2022-05-10 | 佛山市涂一机电设备有限公司 | Powder coating drying device and drying method |
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