CN114100997A - Anti-doodling spraying processing method for surface of step - Google Patents
Anti-doodling spraying processing method for surface of step Download PDFInfo
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- CN114100997A CN114100997A CN202111041780.0A CN202111041780A CN114100997A CN 114100997 A CN114100997 A CN 114100997A CN 202111041780 A CN202111041780 A CN 202111041780A CN 114100997 A CN114100997 A CN 114100997A
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- doodling
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- 238000005507 spraying Methods 0.000 title claims abstract description 57
- 238000003672 processing method Methods 0.000 title claims abstract description 7
- 238000012360 testing method Methods 0.000 claims abstract description 55
- 239000003973 paint Substances 0.000 claims abstract description 26
- 238000004140 cleaning Methods 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000428 dust Substances 0.000 claims abstract description 19
- 230000018044 dehydration Effects 0.000 claims abstract description 13
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 13
- 238000001035 drying Methods 0.000 claims abstract description 12
- 239000012459 cleaning agent Substances 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 238000000227 grinding Methods 0.000 claims abstract description 4
- 238000005498 polishing Methods 0.000 claims abstract description 4
- 230000002265 prevention Effects 0.000 claims abstract description 4
- 238000005406 washing Methods 0.000 claims description 24
- 230000005540 biological transmission Effects 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 20
- 238000003825 pressing Methods 0.000 claims description 18
- 239000007921 spray Substances 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 230000007547 defect Effects 0.000 claims description 5
- 239000012752 auxiliary agent Substances 0.000 claims description 4
- 208000032544 Cicatrix Diseases 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 3
- 238000005238 degreasing Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 238000002161 passivation Methods 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 231100000241 scar Toxicity 0.000 claims description 3
- 230000037387 scars Effects 0.000 claims description 3
- 239000003599 detergent Substances 0.000 claims description 2
- 238000003754 machining Methods 0.000 claims 9
- 239000011248 coating agent Substances 0.000 abstract description 13
- 238000000576 coating method Methods 0.000 abstract description 13
- 238000010079 rubber tapping Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 201000004681 Psoriasis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Images
Classifications
-
- 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
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
-
- 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
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
- B05D1/38—Successively applying liquids or other fluent materials, e.g. without intermediate treatment with intermediate treatment
-
- 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
- B05D3/12—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 mechanical means
-
- 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
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
- B05D7/544—No clear coat specified the first layer is let to dry at least partially before applying the second layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- 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
- B05D2451/00—Type of carrier, type of coating (Multilayers)
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention provides a spraying processing method for preventing doodling on the surface of a step, which comprises the following steps: step 1: placing the step to be painted on the conveying hanger component; step 2: conveying the steps into a cleaning chamber through a hanger conveying assembly for surface cleaning; and step 3: removing the step accumulated water, sending the water into a dehydration furnace, and then removing water and dust; and 4, step 4: performing powder spraying and drying on the step; and 5: polishing and grinding the surface of the step; step 6: conveying the stair into a paint spraying chamber for paint spraying treatment; and 7: testing the steel pipe to be sent into an anti-deformation mounting testing device; step 8, carrying out deformation prevention on the mounting surface of the step: and performing spot check, namely performing anti-doodling test on the surface of the step. The coating disclosed by the invention has better tolerance to cleaning agents after film forming, has better effect of removing scrawls, can reach G1 grade of coating on the surface of the step, and can effectively prevent the adhesion of small advertisements after being used.
Description
Technical Field
The invention relates to the field of spraying, in particular to a method for spraying and processing anti-doodling on the surface of a step.
Background
The social environment is greatly influenced because the psoriasis advertisement of the modern society is visible everywhere; various small advertisements can be sprayed on the escalator frequently, the cleaning is not easy, the environment is defaced, the step surface coating cannot have good tolerance to cleaning agents, the scrawling object removing efficiency is poor, and the sticking of the small advertisements cannot be effectively prevented after the escalator is used.
Disclosure of Invention
In order to solve the problems, the invention discloses a step surface doodling-preventing spraying processing method, after a coating is formed into a film, the coating has better tolerance to a cleaning agent, the doodling removing efficacy is better, the step surface coating can reach G1 grade, and the adhesion of small advertisements can be effectively prevented after the coating is used.
The anti-doodling spraying processing method for the surface of the step comprises the following steps:
step 1: placing the step to be painted on the conveying hanger component;
step 2: conveying the steps into a cleaning chamber through a hanger conveying assembly for surface cleaning;
and step 3: removing the step accumulated water, sending the water into a dehydration furnace, and then removing water and dust;
and 4, step 4: performing powder spraying and drying on the step;
and 5: polishing and grinding the surface of the step;
step 6: conveying the stair into a paint spraying chamber for paint spraying treatment; wherein, the raw material of the paint is added with the anti-doodling auxiliary agent;
and 7: testing the steel pipe to be sent into an anti-deformation mounting testing device; step 8, carrying out deformation prevention on the mounting surface of the step: and performing spot check, namely performing anti-doodling test on the surface of the step.
The invention further improves that: the step 1 specifically comprises the following steps:
step 1.1: the working personnel wear the protective articles, the produced step blank pieces are prepared in advance before delivery, the step blank piece packages are removed, and the step blank pieces are classified and stored in a designated area; the plastic packaging belt needs to be recycled; placing the steps on a hanger transport assembly; the hanger conveying assembly comprises a transmission frame and a transmission chain arranged on the transmission frame, wherein a support frame is arranged on the transmission chain; the hanging tool is hung on the supporting frame;
step 1.2: workers check the appearance of the hung step blank, pick out products with defects of broken teeth, skewed teeth, material shortage, cold scars, step hooking and the like, and pick out yellow oil spots and mildew spots affecting spraying on the surface of the product for post-treatment; making bad marks and uniformly placing the bad marks in bad areas;
step 1.3: the transmission power supply of the hanger transmission assembly is started, so that the chain on the hanger transmission assembly is transmitted, and the linear speed of the moving chain is set as: 800 rpm (27.5HZ-32 HZ);
step 1.4, uniformly and transversely hanging the step blanks to ensure that the left and right balance has no deflection;
step 1.5: the step product inserts need to be protected by rubber sleeves for galvanized parts.
The invention further improves that: the step 2 specifically comprises the following steps:
step 2.1: the heating of a main hot water furnace of a cleaning chamber needs to be advanced by one hour; all spray tanks and nozzles were checked to ensure no plugging;
step 2.2: and (3) cleaning the powder spraying part: pre-washing → degreasing → washing 1 → washing 2 → surface tone → washing 3 → washing 4 → passivation → washing 5 → washing 6 → pure washing.
The invention further improves that: the step 3 specifically comprises the following steps:
step 3.1: removing water, connecting compressed air, and aligning a gun nozzle to a water accumulation part at the heel part of the step tread; the cleaning process must be from top to bottom; the gun nozzle of the air blow gun is not allowed to be attached to the tread and keeps a certain distance from the tread, so that scratches on the tread are avoided, and the appearance is not influenced; then the mixture is sent into a dehydration furnace, and the drying temperature in the dehydration furnace is 110-160 ℃;
step 3.2: removing dust, namely cleaning the skirting, dust in the inner cavity and aluminum scraps from the dried step in the dehydration furnace by using an air blow gun, connecting compressed air with the skirting, the dust in the inner cavity and the aluminum scraps, and cleaning the skirting, the dust in the inner cavity and the aluminum scraps of the step by using the air blow gun;
step 3.3: protection, namely using a special protection plug to protect the step auxiliary wheel shaft;
the invention further improves that: the step 4 specifically comprises the following steps:
step 4.1: the cascade is sent into a spraying room for spraying operation and then sent into a curing oven for hot processing, wherein the baking temperature is 205-225 ℃.
The invention further improves that: the step 6 includes the following;
step 6.1: before spraying paint, blowing off dust on the surface of the step workpiece by using compressed air, and placing a corresponding clamp on the step tread for protection on a material rack in a paint spraying chamber;
step 6.2: the color is ensured to be uniform and consistent in the paint spraying process, and no exposed bottom exists; and (3) paint spraying sequence: the right side and the side of the step tread → the front tooth → the left side and the side of the tread → the tooth end of the front tooth; the paint spraying gun uniformly sprays 4-5 back and forth at the yellow edge, the front tooth end surface sprays one back and forth, and the side sprays 2 back and forth;
step 6.3: hanging the stairs onto a hanger in a vertical hanging manner, and entering a drying furnace; feeding the steel plate at a linear speed of 25-28 HZ (1.6-1.9 m/min, 600 +/-10 revolutions) and at a temperature of 160 +/-10 ℃;
step 6.4: the heated step products are placed on the tray, and the treads are separated by blue strips so as to avoid damage.
The invention further improves that: the step 8 includes the following;
step 8.1: drawing 3 rectangles on the stair, using a black marking pen to make a graffiti in the 3 rectangles, blanking three environment-friendly scrawling detergents after 48 hours, and blanking for the 2 nd time after 5 minutes, wherein the blanking corresponds to 1 scrawling and 2 blanking;
step 8.2: in the second time, ten million contact the first rectangle of one scrawling and secondary blanking, one scrawling is made in the other two rectangles, after 48 hours, the two scrawls are blanked by using an environment-friendly cleaning agent, and after 5 minutes, the 2 nd blanking is performed, which corresponds to the 2 scrawling and the 4 blanking;
step 8.3: the third time, contacting with a second rectangle with two scrawls and four times of blanking by ten million, laying the test tube for at least 24 hours, and operating on the other rectangle according to the requirement of the condition 1, wherein the operation corresponds to 3 scrawls and 6 times of blanking; then measuring the average value of the color difference, and requiring that the result is qualified or good
The invention further improves that: the anti-deformation installation testing device in the step 7 comprises a testing table and an operating frame; the center end of the test board is provided with a groove; the mounting table is mounted in the groove, and the bottom of the mounting table is rotationally connected and fixed with a rotating shaft at the bottom of the test table through a rotating plate; wherein the mounting table is provided with a mounting die and the bottom of the mounting table is provided with a positioning groove; the bottom of the test board is symmetrically provided with first air cylinders; wherein a cylinder shaft of the first cylinder is provided with a top plate matched with the positioning groove; the operation frame is fixed above the test board, and two ends of the operation frame are symmetrically provided with second cylinders; a cylinder shaft of each second cylinder is provided with a test pressing plate; the two ends of the mounting table are respectively provided with an embedded groove matched with the test pressing plate; and two ends of the bottom of the mounting table are fixedly connected with the bottom end of the test table through spring rods respectively.
In operation: placing the step on an installation mould, driving a top plate to be tightly pressed in a positioning groove by a first air cylinder to ensure the stability of an installation platform, then placing a corresponding frame at the step installation position, self-tapping screws, locking edge strips on the step by an electric screwdriver, and then checking whether the plane of the assembled step has obvious height difference;
after the inspection is finished, the first air cylinder returns, wherein the second air cylinder at the left end drives the test pressing plate to move downwards to press the left end of the mounting table downwards, and the right end of the bottom of the mounting table is provided with a spring rod to form a pulling force, so that whether the screw is loosened or not and the surface deformation state of the step are observed; then the left end is reset, and the right end is provided with the method for repeated tests.
The invention further improves that: the rotating shaft is sleeved with a positioning gear; the two ends of the rotating plate are respectively provided with a limiting gear meshed with the positioning gear, so that the stability of the mounting table during rotation is guaranteed, and the limiting stability is realized.
The invention further improves that: an elastic pressing plate is rotatably arranged on the supporting frame; the elastic pressing plate is matched with the top of the hanger in a clamped mode, the stability of the hanger and the support frame in a matched mode is guaranteed, the top of the hanger is pressed tightly through the elastic pressing plate, and the hanger is prevented from shaking.
Compared with the prior art, the invention has the beneficial effects that:
1. the process flow is clear, the operation is convenient, and the connection and matching of the steps are scientific and reasonable;
2. the coating on the surface of the step is high in stability, and a coating film prepared by adding the anti-doodling auxiliary agent in the formula has a certain anti-doodling performance;
3. after the surface coating of the step is formed into a film, the surface coating has better tolerance to a cleaning agent, the efficacy of removing scrawls is better, the surface coating of the step can reach G1 level, and the adhesion of small advertisements can be effectively prevented after the surface coating is used.
Drawings
FIG. 1 is a schematic diagram of a rack transport assembly according to the present invention;
FIG. 2 is a schematic structural view of the deformation-preventing mounting test device of the present invention;
list of reference numerals:
wherein 1, a transmission frame; 2-a transmission chain; 3-a support frame; 4-hanging the tool; 5-elastic pressing plate; 6-a test bench; 7-an operation frame; 8, mounting a table; 9-rotating plate; 10-a rotating shaft; 11-installing a mould; 12-positioning grooves; 13-a first cylinder; 14-a top plate; 15-a second cylinder; 16-a test platen; 17-a spring rod; 18-a positioning gear; 19-a limit gear; 20-step; 21-self-tapping screw.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
The anti-doodling spraying processing method for the step surface comprises the following steps:
step 1: placing the step to be painted on the conveying hanger component;
wherein the step 1 specifically comprises the following steps:
step 1.1: the working personnel wear the protective articles, the produced step blank pieces are prepared in advance before delivery, the step blank piece packages are removed, and the step blank pieces are classified and stored in a designated area; the plastic packaging belt needs to be recycled; placing the steps on a hanger transport assembly;
as shown in fig. 1: the hanger conveying assembly comprises a transmission frame 1 and a transmission chain 2 arranged on the transmission frame 1, wherein a support frame 3 is arranged on the transmission chain 2; the hanging tool 4 is hung on the supporting frame 3; an elastic pressing plate 5 is rotatably arranged on the supporting frame 3; the elastic pressing plate 5 is matched with the top of the hanging tool 4 in a clamping manner;
an elastic pressing plate 5 is rotatably arranged on the supporting frame 3; the elastic pressing plate 5 is matched with the top of the hanger 4 in a mutually clamped manner, so that the stability of the matching between the hanger 4 and the support frame 3 is ensured, and the top of the hanger is pressed through the elastic pressing plate 5 to prevent the hanger from shaking; the step 20 is hung on the hanger 4. Step 1.2: workers check the appearance of the hung step blank, pick out products with defects of broken teeth, skewed teeth, material shortage, cold scars, step hooking and the like, and pick out yellow oil spots and mildew spots affecting spraying on the surface of the product for post-treatment; making bad marks and uniformly placing the bad marks in bad areas;
step 1.3: the transmission power supply of the hanger transmission assembly is started, so that the chain on the hanger transmission assembly is transmitted, and the linear speed of the moving chain is set as: 800 rpm (27.5HZ-32 HZ);
step 1.4, uniformly and transversely hanging the step blanks to ensure that the left and right balance has no deflection;
step 1.5: the step product inserts need to be protected by rubber sleeves for galvanized parts.
Step 2: conveying the steps into a cleaning chamber through a hanger conveying assembly for surface cleaning;
wherein the step 2 specifically comprises the following steps:
step 2.1: the heating of a main hot water furnace of a cleaning chamber needs to be advanced by one hour; all spray tanks and nozzles were checked to ensure no plugging;
step 2.2: and (3) cleaning the powder spraying part: pre-washing → degreasing → washing 1 → washing 2 → surface tone → washing 3 → washing 4 → passivation → washing 5 → washing 6 → pure washing.
And step 3: removing the step accumulated water, sending the water into a dehydration furnace, and then removing water and dust;
wherein the step 3 specifically comprises the following steps:
step 3.1: removing water, connecting compressed air, and aligning a gun nozzle to a water accumulation part at the heel part of the step tread; the cleaning process must be from top to bottom; the gun nozzle of the air blow gun is not allowed to be attached to the tread and keeps a certain distance from the tread, so that scratches on the tread are avoided, and the appearance is not influenced; then the mixture is sent into a dehydration furnace, and the drying temperature in the dehydration furnace is 110-160 ℃;
step 3.2: removing dust, namely cleaning the skirting, dust in the inner cavity and aluminum scraps from the dried step in the dehydration furnace by using an air blow gun, connecting compressed air with the skirting, the dust in the inner cavity and the aluminum scraps, and cleaning the skirting, the dust in the inner cavity and the aluminum scraps of the step by using the air blow gun;
step 3.3: protection, namely using a special protection plug to protect the step auxiliary wheel shaft;
and 4, step 4: performing powder spraying and drying on the step;
wherein the step 4 specifically comprises the following steps:
step 4.1: the cascade is sent into a spraying room for spraying operation and then sent into a curing oven for hot processing, wherein the baking temperature is 205-225 ℃.
And 5: polishing and grinding the surface of the step;
step 6: conveying the stair into a paint spraying chamber for paint spraying treatment; wherein, the raw material of the paint is added with the anti-doodling auxiliary agent; wherein said step 6 comprises the following;
step 6.1: before spraying paint, blowing off dust on the surface of the step workpiece by using compressed air, and placing a corresponding clamp on the step tread for protection on a material rack in a paint spraying chamber;
step 6.2: the color is ensured to be uniform and consistent in the paint spraying process, and no exposed bottom exists; and (3) paint spraying sequence: the right side and the side of the step tread → the front tooth → the left side and the side of the tread → the tooth end of the front tooth; the paint spraying gun uniformly sprays 4-5 back and forth at the yellow edge, the front tooth end surface sprays one back and forth, and the side sprays 2 back and forth;
step 6.3: hanging the stairs onto a hanger in a vertical hanging manner, and entering a drying furnace; feeding the steel plate at a linear speed of 25-28 HZ (1.6-1.9 m/min, 600 +/-10 revolutions) and at a temperature of 160 +/-10 ℃;
step 6.4: the heated step products are placed on the tray, and the treads are separated by blue strips so as to avoid damage.
And 7: testing the steel pipe to be sent into an anti-deformation mounting testing device; carrying out deformation prevention test on the mounting surface of the step;
as shown in fig. 2: the anti-deformation installation testing device in the step 7 comprises a testing table 6 and an operating frame 7; wherein, the central end of the test bench 6 is provided with a groove; the mounting table 8 is mounted in the groove, and the bottom of the mounting table is rotationally connected and fixed with a rotating shaft 10 at the bottom of the test table 6 through a rotating plate 9; wherein the mounting table 8 is provided with a mounting mould 11 and the bottom of the mounting table is provided with a positioning groove 12; the bottom of the test bench 6 is symmetrically provided with first cylinders 13; wherein, a top plate 14 matched with the positioning groove 12 is arranged on the cylinder shaft of the first cylinder 13; the operating frame 7 is fixed above the test board 6, and two ends of the operating frame are symmetrically provided with second air cylinders 15; a cylinder shaft of each second cylinder 15 is provided with a test pressure plate 16; two ends of the mounting table 8 are respectively provided with an embedding groove matched with the test pressing plate 16; and two ends of the bottom of the mounting table 8 are fixedly connected with the bottom end of the test table 6 through spring rods 17 respectively.
Wherein the rotating shaft 10 is sleeved with a positioning gear 18; wherein, two ends of the rotating plate 9 are respectively provided with a limit gear 19 which is meshed with the positioning gear 18.
In operation: placing the step 20 on the installation mould 11, driving the top plate to be pressed 14 tightly in the positioning groove 12 by the first air cylinder 13 to ensure the stability of the installation platform 8, then placing the corresponding frame on the step 20 to be installed, self-tapping screws 21, locking the edge strips on the step by using an electric screwdriver, and then checking whether the plane of the assembled step 20 has obvious height difference; after the inspection is finished, the first air cylinder 13 returns, wherein the second air cylinder 15 at the left end drives the test pressing plate 16 to move downwards to press the left end of the mounting table 8 downwards, and a spring rod 17 is arranged at the right end of the bottom of the mounting table 8 to form a pulling force, so that whether the screw is loosened or not and the surface deformation state of the step is observed; then the left end is reset, and the right end is provided with the method for repeated tests.
And 8: and performing spot check, namely performing anti-doodling test on the surface of the step.
The step 8 includes the following;
step 8.1: drawing 3 rectangles on the stair, using an Edding 2000C black marking pen to draw a graffiti in the 3 rectangles, blanking the AB environment-friendly cleaning agent DD486 after 48 hours, and blanking for the 2 nd time after 5 minutes, wherein the blanking corresponds to 1 time graffiti and 2 times blanking;
step 8.2: in the second time, ten million contact the first rectangle of one scrawling and secondary blanking, one scrawling is made in the other two rectangles, after 48 hours, the two scrawls are blanked by using an AB environment-friendly cleaning agent DD486, after 5 minutes, the 2 nd blanking is performed, which corresponds to the 2 scrawling and the 4 blanking;
step 8.3: the third time, contacting with a second rectangle with two scrawls and four times of blanking by ten million, laying the test tube for at least 24 hours, and operating on the other rectangle according to the requirement of the condition 1, wherein the operation corresponds to 3 scrawls and 6 times of blanking; then, the average value of the color difference is measured, and the result is required to be qualified or good.
In which the example was subjected to an anti-graffiti test (erosive test):
a, requiring: 1) using filter paper with the diameter of 90mm to be stained with 1ml of AB environment-friendly cleaning agent according to requirements
DD486, covered with a glass dish, was placed on sample plate surface 24H.
2) The filter paper was removed, the paper towel soaked with water was then soaked in the template and dried for 24H.
3) The requirement is that no obvious change can be seen by naked eyes after the test or no obvious defect exists in 24H after the drying treatment;
b, actual measurement: no significant change was seen with the naked eye after both tests and no significant defect was seen in 24H after drying treatment.
C: and (3) judging: the AB environmental friendly cleaning agent DD486 was good for the test of the corrosivity of the surface of the Eisen molding powder sample plate and was not corrosive.
The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features.
Claims (10)
1. The anti-doodling spraying processing method for the surface of the step is characterized by comprising the following steps of: the method comprises the following steps:
step 1: placing the step to be painted on the conveying hanger component;
step 2: conveying the steps into a cleaning chamber through a hanger conveying assembly for surface cleaning;
and step 3: removing the step accumulated water, sending the water into a dehydration furnace, and then removing water and dust;
and 4, step 4: performing powder spraying and drying on the step;
and 5: polishing and grinding the surface of the step;
step 6: conveying the stair into a paint spraying chamber for paint spraying treatment; wherein, the raw material of the paint is added with the anti-doodling auxiliary agent;
and 7: testing the steel pipe to be sent into an anti-deformation mounting testing device; step 8, carrying out deformation prevention on the mounting surface of the step: and performing spot check, namely performing anti-doodling test on the surface of the step.
2. The step surface anti-doodling spraying machining method according to claim 1, characterized by comprising the following steps of: the step 1 specifically comprises the following steps:
step 1.1: the working personnel wear the protective articles, the produced step blank pieces are prepared in advance before delivery, the step blank piece packages are removed, and the step blank pieces are classified and stored in a designated area; the plastic packaging belt needs to be recycled; placing the steps on a hanger transport assembly; the hanger conveying assembly comprises a transmission frame (1) and a transmission chain (2) arranged on the transmission frame (1), wherein a support frame (3) is arranged on the transmission chain (2); the hanging tool (4) is hung on the support frame (3);
step 1.2: workers check the appearance of the hung step blank, pick out products with defects of broken teeth, skewed teeth, material shortage, cold scars, step hooking and the like, and pick out yellow oil spots and mildew spots affecting spraying on the surface of the product for post-treatment; making bad marks and uniformly placing the bad marks in bad areas;
step 1.3: the transmission power supply of the hanger transmission assembly is started, so that the chain on the hanger transmission assembly is transmitted, and the linear speed of the moving chain is set as: 800 rpm (27.5HZ-32 HZ);
step 1.4, uniformly and transversely hanging the step blanks to ensure that the left and right balance has no deflection;
step 1.5: the step product inserts need to be protected by rubber sleeves for galvanized parts.
3. The step surface anti-doodling spraying machining method according to claim 1, characterized by comprising the following steps of: the step 2 specifically comprises the following steps:
step 2.1: the heating of a main hot water furnace of a cleaning chamber needs to be advanced by one hour; all spray tanks and nozzles were checked to ensure no plugging;
step 2.2: and (3) cleaning the powder spraying part: pre-washing → degreasing → washing 1 → washing 2 → surface tone → washing 3 → washing 4 → passivation → washing 5 → washing 6 → pure washing.
4. The step surface anti-doodling spraying machining method according to claim 1, characterized by comprising the following steps of:
the step 3 specifically comprises the following steps:
step 3.1: removing water, connecting compressed air, and aligning a gun nozzle to a water accumulation part at the heel part of the step tread; the cleaning process must be from top to bottom; the gun nozzle of the air blow gun is not allowed to be attached to the tread and keeps a certain distance from the tread, so that scratches on the tread are avoided, and the appearance is not influenced; then the mixture is sent into a dehydration furnace, and the drying temperature in the dehydration furnace is 110-160 ℃;
step 3.2: removing dust, namely cleaning the skirting, dust in the inner cavity and aluminum scraps from the dried step in the dehydration furnace by using an air blow gun, connecting compressed air with the skirting, the dust in the inner cavity and the aluminum scraps, and cleaning the skirting, the dust in the inner cavity and the aluminum scraps of the step by using the air blow gun;
step 3.3: and (4) protection, namely protecting the step secondary wheel shaft by using a special protection plug.
5. The step surface anti-doodling spraying machining method according to claim 1, characterized by comprising the following steps of:
the step 4 specifically comprises the following steps:
step 4.1: the cascade is sent into a spraying room for spraying operation and then sent into a curing oven for hot processing, wherein the baking temperature is 205-225 ℃.
6. The step surface anti-doodling spraying machining method according to claim 1, characterized by comprising the following steps of: the step 6 includes the following;
step 6.1: before spraying paint, blowing off dust on the surface of the step workpiece by using compressed air, and placing a corresponding clamp on the step tread for protection on a material rack in a paint spraying chamber;
step 6.2: the color is ensured to be uniform and consistent in the paint spraying process, and no exposed bottom exists; and (3) paint spraying sequence: the right side and the side of the step tread → the front tooth → the left side and the side of the tread → the tooth end of the front tooth; the paint spraying gun uniformly sprays 4-5 back and forth at the yellow edge, the front tooth end surface sprays one back and forth, and the side sprays 2 back and forth;
step 6.3: hanging the stairs onto a hanger in a vertical hanging manner, and entering a drying furnace; feeding the steel plate at a linear speed of 25-28 HZ (1.6-1.9 m/min, 600 +/-10 revolutions) and at a temperature of 160 +/-10 ℃;
step 6.4: the heated step products are placed on the tray, and the treads are separated by blue strips so as to avoid damage.
7. The step surface anti-doodling spraying machining method according to claim 1, characterized by comprising the following steps of: the step 8 includes the following;
step 8.1: drawing 3 rectangles on the stair, using a black marking pen to make a graffiti in the 3 rectangles, blanking three environment-friendly scrawling detergents after 48 hours, and blanking for the 2 nd time after 5 minutes, wherein the blanking corresponds to 1 scrawling and 2 blanking;
step 8.2: in the second time, ten million contact the first rectangle of one scrawling and secondary blanking, one scrawling is made in the other two rectangles, after 48 hours, the two scrawls are blanked by using an environment-friendly cleaning agent, and after 5 minutes, the 2 nd blanking is performed, which corresponds to the 2 scrawling and the 4 blanking;
step 8.3: the third time, contacting with a second rectangle with two scrawls and four times of blanking by ten million, laying the test tube for at least 24 hours, and operating on the other rectangle according to the requirement of the condition 1, wherein the operation corresponds to 3 scrawls and 6 times of blanking; then, the average value of the color difference is measured, and the result is required to be qualified or good.
8. The step surface anti-doodling spraying machining method according to claim 1, characterized by comprising the following steps of: the anti-deformation installation testing device in the step 7 comprises a testing table (6) and an operating frame (7); the center end of the test bench (6) is provided with a groove; wherein the mounting table (8) is mounted in the groove, and the bottom of the mounting table is rotationally connected and fixed with a rotating shaft (10) at the bottom of the test table (6) through a rotating plate (9); wherein the mounting table (8) is provided with a mounting die (11) and the bottom of the mounting table is provided with a positioning groove (12); the bottom of the test bench (6) is symmetrically provided with first air cylinders (13); wherein a cylinder shaft of the first cylinder (13) is provided with a top plate (14) which is matched with the positioning groove (12); the operating frame (7) is fixed above the test board (6), and two ends of the operating frame are symmetrically provided with second air cylinders (15); a cylinder shaft of each second cylinder (15) is provided with a test pressing plate (16); two ends of the mounting table (8) are respectively provided with an embedded groove matched with the test pressing plate (16); and two ends of the bottom of the mounting table (8) are fixedly connected with the bottom end of the test table (6) through spring rods (17).
9. The step surface anti-doodling spraying machining method according to claim 8, characterized by comprising the following steps of: a positioning gear (18) is sleeved on the rotating shaft (10); wherein, two ends of the rotating plate (9) are respectively provided with a limit gear (19) which is meshed with the positioning gear (18).
10. The step surface anti-doodling spraying machining method according to claim 2, characterized by comprising the following steps of: an elastic pressing plate (5) is rotatably arranged on the supporting frame (3); the elastic pressing plate (5) is matched with the top of the hanging tool (4) in a clamping manner.
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| CN202111041780.0A CN114100997A (en) | 2021-09-07 | 2021-09-07 | Anti-doodling spraying processing method for surface of step |
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| CN202111041780.0A CN114100997A (en) | 2021-09-07 | 2021-09-07 | Anti-doodling spraying processing method for surface of step |
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