阅读说明：本技术 喷涂生产线挂具在线自动清洗设备及其清洗方法 (Online automatic cleaning equipment for hanging tool of spraying production line and cleaning method thereof ) 是由 吴朝良 张洪亮 张连太 于 2021-09-16 设计创作，主要内容包括：本发明公开了一种喷涂生产线挂具在线自动清洗设备及其清洗方法,设备包括：被闭环链条导轨和输送链条穿过的密闭箱体,密闭箱体内部划分为前道水洗区、药剂清洗区、后道水洗区、烘干区,药剂清洗区设置有药剂清洗槽和高压喷药装置,前道水洗区和后道水洗区均设置有水洗槽和高压喷水装置,烘干区连接有烘干设备；本发明通过在原喷涂生产线上设置挂具在线自动清洗设备,实现了输送链条以及喷涂挂具的在线自动清理,不必离线即能自动清洗,替代人工取换和清洗挂具,大量节约用工的同时又提高了生产效率,并且不必额外准备备用挂具,大大节约了挂具成本,设备环保性较好。(The invention discloses an online automatic cleaning device and a cleaning method for a hanger on a spraying production line, wherein the device comprises: the closed box body is penetrated by a closed loop chain guide rail and a conveying chain, the inside of the closed box body is divided into a front washing area, a medicament washing area, a rear washing area and a drying area, the medicament washing area is provided with a medicament washing tank and a high-pressure pesticide spraying device, the front washing area and the rear washing area are both provided with a washing tank and a high-pressure water spraying device, and the drying area is connected with drying equipment; according to the invention, the automatic online cleaning equipment for the hangers is arranged on the original spraying production line, so that the automatic online cleaning of the conveying chain and the spraying hangers is realized, the automatic cleaning can be realized without offline, the manual replacing and cleaning of the hangers are replaced, the labor is greatly saved, the production efficiency is improved, the additional preparation of spare hangers is not needed, the hanger cost is greatly saved, and the equipment is better in environmental protection.)

1. Spraying production line online self-cleaning equipment of hanger, the spraying production line is provided with closed loop chain guide and conveying chain, conveying chain has hung the hanger, its characterized in that, the online self-cleaning equipment of hanger includes:

the chain guide rail and the conveying chain penetrate through the closed box body, and the interior of the closed box body is divided into a front washing area, a medicament washing area, a rear washing area and a drying area along the conveying direction; the front washing area is provided with a front washing tank, and the front washing tank is provided with a front high-pressure water spraying device; the medicament cleaning area is provided with a medicament cleaning tank, and the medicament cleaning tank is provided with a high-pressure pesticide spraying device; the rear washing area is provided with a rear washing tank which is provided with a rear high-pressure water spraying device; the drying area is connected with a drying device.

2. The on-line automatic cleaning equipment for the coating production line hanger according to claim 1, wherein the front high-pressure water spraying device and the rear high-pressure water spraying device each comprise: the water inlet of the water circulating pump is communicated with the rinsing bath, the water outlet of the water circulating pump is communicated with the water spraying pipe, the water spraying pipe is provided with a plurality of high-pressure water spraying nozzles, and a plurality of vertically arranged water spraying pipes are arranged on two sides of the closed box body and above the rinsing bath;

the high-pressure pesticide spraying device comprises: the high-pressure pesticide spraying device comprises a pesticide circulating pump, a pesticide spraying pipe and a high-pressure pesticide spraying nozzle, wherein a pesticide inlet of the pesticide circulating pump is communicated with a pesticide washing tank, a pesticide outlet of the pesticide circulating pump is communicated with the pesticide spraying pipe, the pesticide spraying pipe is provided with a plurality of high-pressure pesticide spraying nozzles, and the two sides of the closed box body are located above the pesticide washing tank and are provided with a plurality of vertical pesticide spraying pipes.

3. The online automatic cleaning equipment for the hangers on the spraying production line as claimed in claim 1, wherein the front rinsing bath, the medicament rinsing bath and the rear rinsing bath are provided with bath overflow baffles at the front part and the rear part; the upper parts of the front rinsing bath, the medicament rinsing bath and the rear rinsing bath are respectively provided with a filter screen, the two sides of the filter screens are high, the middle of the filter screens is low, and the filter screens are V-shaped.

4. The online automatic cleaning equipment for the hangers on the spraying production line as claimed in claim 1, wherein inlet ends of the hangers are provided with inlet end flexible baffles, and outlet ends of the hangers are provided with outlet end flexible baffles, at the upper parts of the front rinsing bath, the medicament rinsing bath and the rear rinsing bath; two inlet end flexible baffles and two outlet end flexible baffles are arranged in parallel, and a channel for the conveying chain and the hanging tool to pass through is formed between the two flexible baffles arranged in parallel.

5. The online automatic cleaning device for the hanging tool of the spraying production line as claimed in claim 1, wherein a filter residue collecting region is arranged between the front washing region and the medicament washing region and between the medicament washing region and the rear washing region, a filter residue pipeline is arranged in the filter residue collecting region and connected with a filter residue collecting box, the filter residue collecting box is arranged outside the airtight box, and the filter residue pipeline is arranged from the inside of the airtight box to the outside of the airtight box in a high-to-low inclined manner.

6. The online automatic cleaning device for the hanging tool of the spraying production line according to claim 1, wherein a plurality of vertically arranged hot air nozzles are arranged on two sides of the closed box body corresponding to the drying area, the hot air nozzles are connected with the drying device, and the drying device is a hot air drying device.

7. The online automatic cleaning device for the hanging tool of the spraying production line according to claim 1, wherein a part of the chain guide rail, which is positioned in the closed box body, is defined as a cleaning section guide rail, a part, which is close to an inlet of the closed box body and is positioned outside the closed box body, is defined as an inlet end external guide rail, a part, which is close to an outlet of the closed box body and is positioned outside the closed box body, is defined as an outlet end external guide rail, and the inlet end external guide rail and the outlet end external guide rail are both higher than the cleaning section guide rail;

the cleaning section guide rail and the inlet end external guide rail as well as the cleaning section guide rail and the outlet end external guide rail are in transition through arc sections.

8. The on-line automatic cleaning equipment for the hangers on the spraying production line as claimed in claim 1, wherein a chain automatic lubricating device is arranged at the downstream of the closed box body, and the chain automatic lubricating device comprises: defeated oil pipe, defeated oil pipe's the end that produces oil is located the top of carrying the chain, defeated oil pipe's oil feed end connects the oil tank, the oil tank is provided with the control valve carry the chain the below and with defeated oil pipe's the corresponding position of the end that produces oil is provided with the waste oil bucket.

9. The cleaning method for the on-line automatic cleaning equipment of the coating production line hanger, which is characterized by comprising the following steps of:

s100, washing with water in the previous step: the conveying chain conveys the hanger into the closed box, and in a front washing area, a high-pressure water spraying device of the front washing tank sprays high-pressure water to the conveying chain and the hanger, so that the conveying chain and the hanger are subjected to front washing, and dust on the surfaces of the chain and the hanger is washed away;

s200, cleaning with a medicament: after the previous washing, the hanging tool is conveyed into a medicament washing area by the conveying chain, and a high-pressure medicament spraying device of the medicament washing groove sprays high-pressure washing medicaments to the conveying chain and the hanging tool to remove solidified powder or paint on the surfaces of the chain and the hanging tool;

s300, later washing: after the medicament is cleaned, the hanger is conveyed into a subsequent washing area by the conveying chain, and high-pressure water is sprayed to the conveying chain and the hanger by a high-pressure water spraying device of the subsequent washing tank to wash the medicament on the surfaces of the chain and the hanger and the solidified powder or paint which is not sufficiently fallen off;

s400, drying: after the subsequent washing, the hanging tool is conveyed into a drying area by the conveying chain, and the drying equipment dries the chain and the hanging tool.

10. The cleaning method of the on-line automatic cleaning device for the coating production line hanger as claimed in claim 9, further comprising the steps of:

s500, automatic lubrication: and a chain automatic lubricating device is arranged at the downstream of the closed box body, and after the hanger leaves the closed box body, the conveying chain is lubricated by the chain automatic lubricating device.

Technical Field

The invention relates to the technical field of spraying equipment, in particular to online automatic cleaning equipment for a hanger on a spraying production line and a cleaning method thereof.

Background

The powder spraying is to adsorb dry powder on the surface of workpiece by electrostatic spraying principle, and the powder is solidified into a layer of firm and bright coating with thickness of about 60 microns after being baked at a high temperature of more than 200 ℃. The sprayed product has smooth surface, uniform color, strong acid resistance, alkali resistance, crashworthiness and wear resistance, and can be subjected to strong ultraviolet radiation and acid rain erosion for a long time without the phenomena of coating pulverization, fading, falling off and the like.

After the aluminum profiles are extruded and formed, some aluminum profiles used as doors and windows need to be sprayed, and at present, the aluminum profiles are widely sprayed by electrostatic powder spraying or paint spraying through a vertical aluminum profile spraying production line. As is well known, after a hanger used for powder spraying or paint spraying on an aluminum profile is used for a long time, the hanger is covered by powder or paint, so that the conductive effect of the hanger is reduced, and the powder adsorption is influenced. At present, the powder or the paint that cover are got rid of to the abluent mode of burning clean mostly adoption off-line of the vertical spraying line spraying hanger of aluminium alloy, and this kind of traditional hanger cleaning methods is consuming time hard to can cause certain influence to the environment, and, adopt traditional hanger cleaning methods still need often be equipped with the several times and replace the required hanger of actual production, and need artifical participation to constantly replace the washing, intensity of labour is high, and the cleaning efficiency is low.

Disclosure of Invention

In view of the above, the first technical problem to be solved by the present invention is: the on-line automatic cleaning equipment for the hanging tool in the spraying production line is provided, the hanging tool can be automatically cleaned without being off-line, the cleaning efficiency is improved, the cost of the hanging tool is saved, and the labor intensity is reduced.

Based on a general inventive concept, the second technical problem to be solved by the present invention is: provides a cleaning method of an online automatic cleaning device for a hanger on a spraying production line.

In order to solve the first technical problem, the technical scheme of the invention is as follows: spraying production line online self-cleaning equipment of hanger, the spraying production line is provided with closed loop chain guide and conveying chain, conveying chain has hung the hanger, online self-cleaning equipment of hanger includes:

the chain guide rail and the conveying chain penetrate through the closed box body, and the interior of the closed box body is divided into a front washing area, a medicament washing area, a rear washing area and a drying area along the conveying direction; the front washing area is provided with a front washing tank, and the front washing tank is provided with a front high-pressure water spraying device; the medicament cleaning area is provided with a medicament cleaning tank, and the medicament cleaning tank is provided with a high-pressure pesticide spraying device; the rear washing area is provided with a rear washing tank which is provided with a rear high-pressure water spraying device; the drying area is connected with a drying device.

Wherein, the front high pressure water jet equipment, the back high pressure water jet equipment all includes: the water inlet of the water circulating pump is communicated with the rinsing bath, the water outlet of the water circulating pump is communicated with the water spraying pipe, the water spraying pipe is provided with a plurality of high-pressure water spraying nozzles, and a plurality of vertically arranged water spraying pipes are arranged on two sides of the closed box body and above the rinsing bath;

the high-pressure pesticide spraying device comprises: the high-pressure pesticide spraying device comprises a pesticide circulating pump, a pesticide spraying pipe and a high-pressure pesticide spraying nozzle, wherein a pesticide inlet of the pesticide circulating pump is communicated with a pesticide washing tank, a pesticide outlet of the pesticide circulating pump is communicated with the pesticide spraying pipe, the pesticide spraying pipe is provided with a plurality of high-pressure pesticide spraying nozzles, and the two sides of the closed box body are located above the pesticide washing tank and are provided with a plurality of vertical pesticide spraying pipes.

Wherein, the front part and the rear part of the front rinsing bath, the medicament rinsing bath and the rear rinsing bath are provided with bath solution overflow baffles; the upper parts of the front rinsing bath, the medicament rinsing bath and the rear rinsing bath are respectively provided with a filter screen, the two sides of the filter screens are high, the middle of the filter screens is low, and the filter screens are V-shaped.

The inlet ends of the hangers are all provided with inlet end flexible baffles, and the outlet ends of the hangers are all provided with outlet end flexible baffles at the upper parts of the front-path rinsing bath, the medicament rinsing bath and the rear-path rinsing bath; two inlet end flexible baffles and two outlet end flexible baffles are arranged in parallel, and a channel for the conveying chain and the hanging tool to pass through is formed between the two flexible baffles arranged in parallel.

Wherein, the front track washing district with between the medicament washing district with all be provided with the filter residue collecting region between the back track washing district, the filter residue collecting region is provided with the filter residue pipeline, the filter residue pipeline is connected with the filter residue collecting box, the filter residue collecting box set up in the outside of seal box, the filter residue pipeline certainly the inside of seal box arrives the outside of seal box is by the high slope setting to low.

The two sides of the closed box body corresponding to the drying area are provided with a plurality of vertically arranged hot air nozzles, the hot air nozzles are connected with the drying equipment, and the drying equipment is hot air drying equipment.

The part of the chain guide rail, which is positioned in the closed box body, is defined as a cleaning section guide rail, the part, which is close to the inlet of the closed box body and is positioned outside the closed box body, is defined as an inlet end external guide rail, the part, which is close to the outlet of the closed box body and is positioned outside the closed box body, is defined as an outlet end external guide rail, and the inlet end external guide rail and the outlet end external guide rail are both higher than the cleaning section guide rail;

the cleaning section guide rail and the inlet end external guide rail as well as the cleaning section guide rail and the outlet end external guide rail are in transition through arc sections.

Wherein, the low reaches of airtight box are provided with chain self-lubricate device, chain self-lubricate device includes: defeated oil pipe, defeated oil pipe's the end that produces oil is located the top of carrying the chain, defeated oil pipe's oil feed end connects the oil tank, the oil tank is provided with the control valve carry the chain the below and with defeated oil pipe's the corresponding position of the end that produces oil is provided with the waste oil bucket.

In order to solve the second technical problem, the technical solution of the present invention is: the cleaning method of the online automatic cleaning equipment for the hangers on the spraying production line comprises the following steps:

s100, washing with water in the previous step: the conveying chain conveys the hanger into the closed box, and in a front washing area, a high-pressure water spraying device of the front washing tank sprays high-pressure water to the conveying chain and the hanger, so that the conveying chain and the hanger are subjected to front washing, and dust on the surfaces of the chain and the hanger is washed away;

s200, cleaning with a medicament: after the previous washing, the hanging tool is conveyed into a medicament washing area by the conveying chain, and a high-pressure medicament spraying device of the medicament washing groove sprays high-pressure washing medicaments to the conveying chain and the hanging tool to remove solidified powder or paint on the surfaces of the chain and the hanging tool;

s300, later washing: after the medicament is cleaned, the hanger is conveyed into a subsequent washing area by the conveying chain, and high-pressure water is sprayed to the conveying chain and the hanger by a high-pressure water spraying device of the subsequent washing tank to wash the medicament on the surfaces of the chain and the hanger and the solidified powder or paint which is not sufficiently fallen off;

s400, drying: after the subsequent washing, the hanging tool is conveyed into a drying area by the conveying chain, and the drying equipment dries the chain and the hanging tool.

The cleaning method also comprises the following steps:

s500, automatic lubrication: and after the hanging tool leaves the closed box body, lubricating the conveying chain by the automatic chain lubricating device.

After the technical scheme is adopted, the invention has the following beneficial effects:

the on-line automatic cleaning equipment for the hanging tool of the spraying production line comprises: the inner part of the closed box body is divided into a front washing area, a medicament washing area, a rear washing area and a drying area, the front washing area is provided with a front washing tank and a front high-pressure water spraying device, the medicament washing area is provided with a medicament washing tank and a high-pressure medicine spraying device, the rear washing area is provided with a rear washing tank and a rear high-pressure water spraying device, and the drying area is connected with drying equipment; when the hangers on the spraying production line need to be cleaned, in a front-path water washing area, a front-path high-pressure water spraying device sprays high-pressure water to carry out front-path water washing on the conveying chain and the hangers so as to wash off dust on the surfaces of the chain and the hangers; in the agent cleaning area, a high-pressure spraying device sprays high-pressure cleaning agent to remove the solidified powder or paint adhered to the surfaces of the chains and the hangers; in the rear washing area, the rear high-pressure water spraying device sprays high-pressure water to wash the medicament on the surfaces of the chains and the hangers and the solidified powder or paint which is not fully fallen off; drying the cleaned chains and the hangers in the drying area by drying equipment; when passing through the automatic chain lubricating device, the chain can be automatically lubricated according to the requirement; then the conveying chain conveys the hanger to the position near a feeding area of a spraying production line, a workpiece needing spraying is hung on the hanger, and the workpiece can be sprayed under the conveying of the conveying chain.

According to the invention, the closed box body is arranged on the existing spraying production line, and the front and back washing and the medicament washing between the two washing are arranged in the closed box body, so that the on-line automatic cleaning and the automatic lubrication of the conveying chain and the spraying hanger are realized, the automatic cleaning can be realized without off-line, the manual replacement and cleaning of the hanger are replaced, the production efficiency is improved while the labor is greatly saved, and the extra preparation of a spare hanger is not needed, so that the cost of the hanger is greatly saved; the closed box body can also prevent the cleaning agent from volatilizing, thereby avoiding causing environmental pollution.

Drawings

FIG. 1 is a schematic block diagram of a new painting production line equipped with the on-line automatic cleaning apparatus for hangers of the present invention;

FIG. 2 is a schematic top view of the on-line automatic cleaning apparatus for rack of the present invention;

FIG. 3 is a schematic front view of an on-line automatic cleaning device for hangers according to the present invention;

FIG. 4 is a view in the direction E of FIG. 3;

FIG. 5 is a view from direction F of FIG. 3;

FIG. 6 is a schematic cross-sectional view of FIG. 3 (in the direction B-B in FIG. 5);

FIG. 7 is a schematic sectional view A-A of FIG. 3;

FIG. 8 is a schematic cross-sectional view of C-C of FIG. 3;

FIG. 9 is a schematic cross-sectional view D-D of FIG. 3;

FIG. 10 is a schematic view of the filter screen of FIG. 7;

FIG. 11 is a schematic view of the trough overflow baffle arrangement of FIG. 9;

in the figure: 1-chain guide; 11 a-inlet end outer guide rails; 11 b-a front arc segment; 12-cleaning the section guide rail; 13 a-outlet end outer guide rails; 13 b-a rear arc segment; 2-conveying chains; 3-hanging a tool; 4-sealing the box body; 41-flexible baffle; 5-a front washing tank; 51-water circulation pump; 52-water spray pipe; 6-a medicament cleaning tank; 61-agent circulation pump; 62-a medicine spraying pipe; 63-a drug addition pump; 64-a bath overflow baffle; 7-next rinsing bath; 71-water circulation pump; 72-water spray pipe; 73-a filter screen; 8-drying area; 81-drying equipment; 82-hot air nozzles; 9-a filter residue collecting region; 91-residue filtering pipeline; 92-a filter residue collecting box; 10-automatic chain lubricating device; 101-a fuel tank; 102-an oil conveying pipe; 103-waste oil barrel; 104-housing.

Detailed Description

The invention is further illustrated in the following non-restrictive description with reference to the figures and examples.

As shown in fig. 1, the on-line automatic cleaning device for a hanger of the present invention is arranged in an existing spraying production line to form a new spraying production line, and the flow of the new spraying production line is as follows: workpiece feeding → pretreatment → drying → spraying → curing → workpiece blanking → automatic cleaning of a hanger → automatic lubrication of a chain → workpiece feeding.

As shown in fig. 2, 3 and 6, the spraying production line is provided with a closed-loop chain guide 1 and a closed-loop conveying chain 2 arranged on the chain guide 1, and a plurality of hangers 3 are hung on the conveying chain 2.

Wherein, online self-cleaning equipment of hanger includes: the closed box body 4 is penetrated by the chain guide rail 1 and the conveying chain 2, and the interior of the closed box body 4 is divided into a front washing area, a medicament washing area, a rear washing area and a drying area along the conveying direction of the chain; the front washing area is provided with a front washing tank 5, and the front washing tank 5 is provided with a front high-pressure water spraying device; the agent cleaning area is provided with an agent cleaning tank 6, and the agent cleaning tank 6 is provided with a high-pressure pesticide spraying device; the latter washing area is provided with a latter washing tank 7, and the latter washing tank 7 is provided with a latter high-pressure water spraying device; the drying zone 8 is connected with a drying device 81.

According to actual needs, the length of the medicament cleaning area can be designed to be longer, so that a sufficient medicament cleaning path is ensured, and powder or paint fixed on the surfaces of the chains and the hangers can be completely removed.

Wherein, the front high pressure water jet equipment includes: water circulating pump 51, spray pipe 52, high pressure water spray nozzle, water circulating pump 51's water inlet and fore-seat wash bowl 5 intercommunication, water circulating pump 51's delivery port and spray pipe 52 intercommunication are provided with a plurality of high pressure water spray nozzles (not specifically shown in the figure) on the spray pipe 52, all be provided with a plurality of vertical settings in the both sides of seal box 1 and the top that is located fore-seat wash bowl 5 the spray pipe 52. Wherein, the back end high pressure water jet equipment includes: the water circulating pump 71, the spray pipe 72, the high pressure water nozzle, the water inlet and the back water wash bowl 7 intercommunication of water circulating pump 71, the delivery port and the spray pipe 72 intercommunication of water circulating pump 71 are provided with a plurality of high pressure water nozzles (not specifically shown in the figure) on the spray pipe 72, all be provided with a plurality of vertical settings in the both sides of seal box 1 and the top that is located back water wash bowl 7 the spray pipe 72.

Wherein, high pressure spouts medicine device includes: the medicament adds pump 63, medicament circulating pump 61, spray tube 62, high pressure medicine spraying nozzle (not specifically shown in the figure), and the medicine inlet and the medicament washing tank 6 intercommunication of medicament circulating pump 61, the play medicine mouth and the spray tube 62 intercommunication of medicament circulating pump 61 are provided with a plurality of high pressure medicine spraying nozzles on the spray tube 62, all are provided with a plurality of vertical settings in the both sides of airtight box 4 and the top that is located medicament washing tank 6 the spray tube 62.

As shown in fig. 3, 7, 9, 10 and 11, the front rinsing bath 5, the chemical rinsing bath 6 and the rear rinsing bath 7 are provided with bath overflow baffles 64 at the front and rear parts thereof; the upper portions of the front rinsing bath 5, the medicament rinsing bath 6 and the rear rinsing bath 7 are provided with filter screens 73, the filter screens are located below the spray pipes, the two sides of the filter screens are high, the middle of the filter screens is low, the filter screens are V-shaped, filter residues are convenient to gather together towards the bottoms of the filter screens, and follow-up cleaning is facilitated.

As shown in fig. 4 and 5, inlet end flexible baffles are arranged at the inlet ends of the hangers above the front rinsing bath 5, the medicament rinsing bath 6 and the rear rinsing bath 7, and outlet end flexible baffles are arranged at the outlet ends of the hangers; two inlet end flexible baffles and two outlet end flexible baffles are arranged side by side, and a channel for the conveying chain 2 and the hanging tool 3 to pass through is formed between the two flexible baffles 41 arranged side by side. The flexible baffle is convenient for the conveying chain 2 and the hanging tool 3 to pass through, and can ensure that each functional area forms a relatively closed space.

As shown in fig. 3 and 6, a residue collecting region 9 is provided between the front washing region and the agent washing region, and between the agent washing region and the rear washing region, a residue pipeline 91 is provided in the residue collecting region 9, the residue pipeline 91 is connected to a residue collecting box 92, the residue collecting box 92 is provided outside the sealed box 4, and the residue pipeline 91 is inclined from the inside of the sealed box 4 to the outside of the sealed box 4 from high to low. When the machine is required to be stopped for cleaning filter residues, the filter residues on the filter screen are manually transferred to one end of the filter residue pipeline 91 in the closed box body 4, and the filter residue pipeline 91 is arranged from inside to outside in a high-to-low inclined mode, so that the filter residues can be easily transferred to the outside filter residue collecting box 92 along the filter residue pipeline 91.

As shown in fig. 3, fig. 6 and fig. 8, a plurality of vertically arranged hot air nozzles 82 are arranged on both sides of the enclosed box 4 corresponding to the drying zone 8, the hot air nozzles 82 are connected with the drying device 81, and the drying device 81 is preferably a known hot air drying device.

As shown in fig. 3 and fig. 6, a portion of the chain guide 1 inside the closed box 4 is defined as a cleaning section guide 12, a portion near the entrance of the closed box 4 and outside the closed box 4 is defined as an entrance end outer guide 11a, a portion near the exit of the closed box 4 and outside the closed box 4 is defined as an exit end outer guide 13a, and both the entrance end outer guide 11a and the exit end outer guide 13a are higher than the cleaning section guide 12; the cleaning section guide rail 12 and the inlet end external guide rail are in transition through a front arc section 11b at 11a, and the cleaning section guide rail 12 and the outlet end external guide rail 13a are in transition through a rear arc section 13 b. Compared with a conventional flat guide rail structure, the concave structure of the guide rail cleaning section can effectively prevent water and cleaning agents in the sealed box body 4 from flowing back to the outside of the sealed box body 4, and avoid influencing an upstream guide rail and a downstream guide rail of the sealed box body 4.

As shown in fig. 2, 3 and 6, wherein, a chain automatic lubricating device 10 is further provided at the downstream of the closed box 4, the chain automatic lubricating device 10 includes: oil tank 101, defeated oil pipe 102, waste oil bucket 103, shell 104, wherein, the oil outlet end of defeated oil pipe 102 is located the top of carrying chain 2, and the oil inlet end of defeated oil pipe 102 connects oil tank 101, and oil tank 101 is provided with the control valve (not specifically shown in the figure), and waste oil bucket 103 sets up in the below of carrying chain 2 and corresponding with the oil outlet end position of defeated oil pipe 102, and the oil outlet end of defeated oil pipe 102 and waste oil bucket 103 all are located shell 104.

The method for cleaning the hanger on line by using the online automatic cleaning equipment for the hanger on the spraying production line comprises the following steps:

s100, washing with water in the previous step: in a spraying production line, after a workpiece after being sprayed and cured is discharged, the conveying chain 2 conveys the hanger 3 into the closed box body 4, in a front-path washing area, under the action of a water circulating pump 51 connected with a front-path washing tank 5, a plurality of high-pressure water nozzles on water spray pipes 52 on two sides spray oppositely to spray high-pressure water to the conveying chain 2 and the hanger 3 to form a water curtain, the conveying chain 23 and the hanger 3 are subjected to front-path washing, and dust on the surfaces of the conveying chain 2 and the hanger 3 is washed away; the water pressure range of the high-pressure water is approximately 5-8 MPa, and the actual water pressure is preferably a low value in the range because the previous washing is mainly used for washing off surface dust.

S200, cleaning with a medicament: after the previous washing, the hanging tool 3 is conveyed into a reagent washing area by the conveying chain 2, under the action of a reagent circulating pump 61 connected with the reagent washing tank 6, a plurality of high-pressure spraying nozzles on the spraying pipes 62 on two sides spray the reagents oppositely, and the high-pressure washing reagents are sprayed to the conveying chain 2 and the hanging tool 3, namely, the high-efficiency paint removing and plastic removing reagents commonly used in the field, so that the solidified powder or paint adhered to the surfaces of the conveying chain 2 and the hanging tool 3 is removed, and the pressure range of the high-pressure washing reagents is approximately 5-8 MPa.

S300, later washing: after the medicament is cleaned, the hanging tool 3 is conveyed into a next washing area by the conveying chain 2, and in the next washing area, under the action of a water circulating pump 71 connected with a next washing tank 7, a plurality of high-pressure water nozzles on water spraying pipes 72 on two sides spray water oppositely to spray high-pressure water to the conveying chain 2 and the hanging tool 3 so as to wash the medicament and the insufficiently-fallen solidified powder or paint on the surfaces of the conveying chain 2 and the hanging tool 3; the high-pressure water range of the subsequent water washing is approximately 5-8 MPa, and the actual water pressure preferably has a high value in the range, so that the surfaces of the conveying chain 2 and the hanging tool 3 are washed more cleanly and thoroughly.

S400, drying: after the subsequent washing, the hanger 3 is sent into the drying area 8 by the conveying chain 2, and the conveying chain 2 and the hanger 3 are dried by the drying device 81.

According to the operational requirements, the following lubrication steps can also be carried out on the conveyor chain 2:

s500, automatic lubrication: after the conveying chain 2 with the hanger 3 leaves the airtight box 4, the conveying chain 2 is lubricated through the automatic chain lubricating device 10, specifically, a control valve is opened, lubricating oil in the oil tank 101 drips on the conveying chain 2 through the oil conveying pipe 102 to lubricate the conveying chain 2, and waste oil after lubrication is collected through a waste oil barrel 103 below the conveying chain 2.

After the online cleaning of the hanger is completed, the conveying chain 2 conveys the hanger 3 to workpiece loading, and then the next cycle of workpiece spraying can be started.

According to the invention, the on-line automatic cleaning equipment for the hangers is arranged on the existing spraying production line, so that the on-line automatic cleaning of the conveying chains and the spraying hangers and the automatic lubrication of the chains are realized, the hangers are replaced and cleaned manually, the production efficiency is improved while a large amount of labor is saved, the spare hangers do not need to be prepared additionally, and the cost of the hangers is greatly saved; and the environmental protection is better.

The foregoing is illustrative of the preferred embodiments of the present invention, and details which have not been given in detail are known in the art, and are not to be construed as limitations on the scope of the invention except as set forth in the following claims.