Pollution-free production method of automobile coating product

Abstract

The invention provides a pollution-free production method of an automobile coating product. The pollution-free production method comprises the following steps: S1, taking a coating material for coating an automobile; s2, glue is sprayed on the coating material for coating the automobile in the step 1; s3, positioning and laminating the coating material for coating the automobile, which is sprayed with the glue in the step S2, with a framework; and S4, pressing the coating material for coating the automobile, which is positioned and laminated in the step S3, and the framework in a constant-temperature and constant-pressure liquid pool of the skin, and then taking out to finish coating. S5, the glue spraying device adopted in the step S2 is cleaned; and S6, treating sewage left after the glue spraying device is cleaned in the step S5 by adopting an agent. According to the pollution-free generation method of the automobile coating product, the glue spraying device is cleaned, then the sewage generated after cleaning is treated by adopting the medicament, and the treated wastewater can be repeatedly used, so that the cost is greatly reduced, and the water resource is saved.

Description

Technical Field

[0001] The invention relates to the field of automobile covering, in particular to a pollution-free production method of automobile covering products. Background Art

[0002] In order to reduce VOC emissions and VOC inside the car, the automotive wrapping industry uses a large amount of water-based glue. The daily cleaning of the glue spray gun and the water curtain (to capture glue mist) in the spray room will produce a large amount of wastewater containing water-based glue, which is directly handed over to the supplier for treatment as hazardous waste. The treatment cost per ton is as high as several thousand yuan, which has become a relatively high cost expenditure in the wrapping industry. The failure to recycle also causes a large amount of waste of water resources. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a pollution-free production method for automobile covering products.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a pollution-free production method for automobile wrapping products, comprising the following steps: step S1, taking a wrapping material for automobile wrapping; step S2, spraying glue on the wrapping material for automobile wrapping in step 1; step S3, positioning and bonding the wrapping material for automobile wrapping after spraying glue in step S2 with a skeleton; step S4, pressing the wrapping material for automobile wrapping and the skeleton that have been positioned and bonded in step S3 in a constant temperature and pressure liquid pool of a skin and then taking them out to complete the wrapping; step S5, cleaning the glue spraying device used in step S2; step S6, using a chemical to treat the wastewater left by cleaning the glue spraying device in step S5. In the above-mentioned pollution-free production method for automobile wrapping products, after the automobile is wrapped, a chemical is used to clean the glue-containing wastewater generated by cleaning the glue spraying device, thereby preventing pollution from being generated during the production process of automobile wrapping products, saving water resources, and also saving costs. At the same time, since a constant temperature and constant pressure liquid pool is used in the production process of the automobile covering product, the automobile covering product produced by the pollution-free production method of the automobile covering product described in the present invention has a higher product quality, because the high flexibility of the liquid pool will not damage the surface of the automobile covering product. Moreover, the automobile covering product produced by the pollution-free production method of the automobile covering product described in the present invention has a longer service life, because the liquid pool is flexible and can fully wrap the automobile covering product. Under the condition of constant temperature and constant pressure of the liquid pool, the glue inside the automobile covering product can be heated more evenly and accurately, so that the degree of activation of the glue inside the automobile covering product is consistent, making the adhesive force of the glue stronger, thereby increasing the service life of the automobile covering product.

[0005] Furthermore, in the pollution-free production method of the automobile covering product, before step S3, step S3-1 is also included, and step S3-1 is to grind or apply putty to the skeleton to make the surface of the skeleton smooth.

[0006] Furthermore, in the pollution-free production method of the automobile coating product, the hydraulic coating process also includes step S4-1, and the step S4-1 includes the following steps: visually inspecting the product obtained after the coating in step S4 is completed.

[0007] Furthermore, in the pollution-free production method of the automobile covering product, a step S4-2 is provided after the step S4-1, and the step S4-2 comprises the following steps: removing the excess covering material contained in the product after the visual inspection in the step S4-2.

[0008] Furthermore, in the pollution-free production method of the automobile covering product, in step S4, the automobile covering covering material and the skeleton that have been positioned and bonded are pressed in the constant temperature and constant pressure liquid pool of the skin for 10 seconds to 60 seconds and then taken out to complete the covering.

[0009] Furthermore, in the pollution-free production method of the automobile coating product, an intelligent visual inspection system is used to perform visual inspection on the product obtained after the coating in step S4, and the intelligent visual inspection software includes a high-definition camera and visual analysis software.

[0010] Furthermore, in the pollution-free production method of the automobile wrapping product, the constant temperature and pressure liquid pool contains a non-Newtonian fluid or a Newtonian fluid, and the constant temperature and pressure liquid pool is used to provide a stable temperature field and a stable wrapping force for the automobile wrapping wrapping material and the frame that have been positioned and bonded. The Newtonian fluid or non-Newtonian fluid is located in the constant temperature and pressure pool and is wrapped by a skin to isolate the Newtonian fluid or non-Newtonian fluid from the bonded wrapping material and the frame. The skin here is a material that can be a leather fabric.

[0011] Furthermore, in the pollution-free production method of the automobile covering product, the glue spraying device is a spray gun, and the agent is a mixed solution containing a PAM polyacrylamide solution and a PAC polyaluminium chloride solution.

[0012] Furthermore, in the pollution-free production method of the automobile covering product, the glue spraying device is a spray gun, the ionicity of PAM polyacrylamide in the solution containing PAM polyacrylamide is 20%-60%, and the concentration of PAC polyaluminium chloride in the solution containing PAC polyaluminium chloride is 26%-30%.

[0013] Furthermore, in the pollution-free production method of the automobile covering product, the solution containing PAM polyacrylamide and the solution containing PAC polyaluminium chloride are added in the order of first adding the solution containing PAC polyaluminium chloride and then adding the solution containing PAM polyacrylamide.

[0014] Compared with the production method of automobile wrapping products in the prior art, the present invention provides a pollution-free production method of automobile wrapping products, and the pollution-free production method of automobile wrapping products includes: step S1, taking a wrapping material for automobile wrapping; step S2, spraying glue on the wrapping material for automobile wrapping in step 1; step S3, positioning and bonding the wrapping material for automobile wrapping after spraying glue in step S2 with the skeleton; step S4, pressing the wrapping material for automobile wrapping and the skeleton that have been positioned and bonded in step S3 in a constant temperature and pressure liquid pool of the skin and then taking it out to complete the wrapping; step S5, cleaning the glue spraying device used in step S2; step S6, using a chemical to treat the wastewater left by cleaning the glue spraying device in step S5. In the above-mentioned pollution-free production method of automobile wrapping products, after the automobile is wrapped, a chemical is used to clean the glue-containing wastewater generated by cleaning the glue spraying device, thereby preventing pollution from being generated during the production process of automobile wrapping products, saving water resources, and saving costs. At the same time, since a constant temperature and constant pressure liquid pool is used in the production process of the automobile covering product, the product quality of the automobile covering product produced by the pollution-free production method of the automobile covering product described in the present invention is also higher, because the high flexibility of the liquid pool will not damage the surface of the automobile covering product. Moreover, the automobile covering product produced by the pollution-free production method of the automobile covering product described in the present invention has a longer service life, because the liquid pool is flexible and can fully wrap the automobile covering product. Under the condition of constant temperature and constant pressure of the liquid pool, the glue inside the automobile covering product can be heated more evenly and accurately, so that the degree of activation of the glue inside the automobile covering product is consistent, and the bonding force of the glue is stronger, thereby increasing the service life of the automobile covering product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0016] Figure 1 The present invention is a schematic flow chart of a pollution-free production method for automobile covering products provided by the present invention. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0019] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0020] The automobile wrapping process refers to the process of bonding the wrapping material to the frame, and in this process, glue needs to be sprayed on the frame and / or the wrapping material. Currently, in the automobile wrapping industry, a large amount of glue is used for water-based glue. Cleaning this glue will produce a large amount of glue-containing wastewater. In the current production process, this glue-containing wastewater is usually handed over to wastewater treatment companies for treatment, and the treatment cost per ton is as high as several thousand yuan. On the one hand, this will greatly increase the production cost, and on the other hand, the inability to recycle water resources will also cause a large amount of water resources to be wasted. Therefore, the inventor proposed a pollution-free production method for automobile wrapping products. Figure 1As shown, the pollution-free production method of the automobile wrapping product is as follows: first take the wrapping material for automobile wrapping, usually PVC skin, PU skin, leather or knitted fabric. Then use the existing glue spraying device on the market to spray glue on the wrapping material. After that, the wrapping material and the skeleton after spraying glue are preliminarily positioned and bonded to prevent the laminated wrapping material and the skeleton from being misaligned in the subsequent lamination stage, resulting in the scrapping of the product. After the skeleton and the wrapping material are preliminarily positioned, the skeleton and the wrapping material after the preliminarily positioning and bonding are placed in a constant temperature and pressure pool for lamination. Since the fluid has high flexibility and filling properties, the wrapping operation of the back flange of the product can be realized. At the same time, since the high latent heat of the liquid pool can stabilize the uniform temperature field, ensure sufficient latent heat to heat the wrapping material without obvious temperature fluctuations, and ensure that the glue activation and curing temperature are more accurate. In this way, since the glue activation and curing temperature are more accurate, the bonding force between the skeleton and the wrapping material is better in the product produced by the pollution-free production process of the automobile wrapping product provided by the present invention. At the same time, by adopting the method of hydraulic coating, the force on the coating material is more uniform, the protection of the coating material is better, and no surface appearance damage will occur. After completing the above coating, the glue spraying device is cleaned with water, and then the solution containing PAC polyaluminum chloride solution and PAM polyacrylamide solution are added to the wastewater left by the cleaning. The purified wastewater can be recycled, which greatly saves costs and water resources.

[0021] Further, in the pollution-free production method of the automobile covering product provided by the present invention, before the automobile covering product is produced by the pollution-free production method of the automobile covering product provided by the present invention, the raw materials constituting the automobile covering product need to be tested first, and the automobile covering raw materials include automobile covering materials and skeletons. Because there may be defects such as breakage, depression, particles, etc. on the surface of the skeleton, and there may also be indentations, damage, etc. on the surface of the automobile covering material. Since the glue cannot be torn off the skin from the skeleton intact once it is cured, part of the back bubble and glue will stick to the skeleton when the skin is torn off and cannot be cleaned, so workers need to carefully check the skeleton and covering materials before covering to reduce the defective rate. When there are defects such as breakage, depression, particles, etc. on the surface of the skeleton, sandpaper can be used to polish the surface of the skeleton, and putty needs to be appropriately applied if necessary to make the surface of the skeleton smooth. When the covering material has appearance defects such as indentations and damage, it is only necessary not to use the covering material with the defects. In the present invention, the steps of testing and polishing the skeleton can occur before step S1, that is, before taking the covering material for automobile covering. It can also occur before step S2 of spraying glue on the covering material for automobile covering. Of course, the steps of testing and polishing the skeleton must occur before positioning and bonding the covering material for automobile covering with the skeleton. And the testing of the covering material should of course occur before using the covering material.

[0022] Furthermore, in the pollution-free production method of the automobile coating product provided by the present invention, the coated product obtained after the coating can be inspected by an intelligent visual defect detection system. The purpose of the detection is to quickly find the defects of the product and improve work efficiency. The intelligent visual detection system may include a high-definition camera and visual analysis software. The high-definition camera is used to take pictures and record the products to be inspected. The visual analysis software is used to analyze the surface of the product recorded in the photos. When the visual analysis software finds defects on the product, it can issue a reminder or mark it to let the on-site staff know. Preferably, the qualified products inspected by the intelligent visual detection system may also contain excess coating materials. At this time, the on-site staff can remove the excess materials.

[0023] Furthermore, in the pollution-free production method of the automobile wrapping product provided by the present invention, after the residual glue on the glue spraying device is cleaned with water, a sewage treatment system can be used for treatment. Specifically, the sewage treatment system includes a sewage tank. The sewage generated by cleaning the glue spraying device can be first collected with a sewage bucket, and then the sewage bucket is forked to the sewage tank by a forklift to pour the sewage into the sewage tank. A pump can also be used to pump the sewage into the sewage tank, wherein the pump can be a diaphragm pump, which is corrosion-resistant and pollution-free, and has a check valve to form a stable filter pressure. A filter screen is provided at the outlet of the sewage tank to filter impurities. The filtered sewage enters the stirring tank, and there is a stirring motor in the stirring tank, which is responsible for stirring the liquid in the stirring tank. The sewage treatment system also includes a dosing barrel A and a dosing barrel B, and stirring motors are respectively provided in the dosing barrel A and the dosing barrel B. The dosing barrel A contains a PAM polyacrylamide solution, and the dosing barrel B contains a PAC polyaluminum chloride solution. Both the dosing barrel A and the dosing barrel B can be equipped with a dosing pump, so that the dosing barrel A and the dosing barrel B can achieve automatic dosing. Dosing barrel A and dosing barrel B are added to the mixing tank in a certain order. A filter screen is set at the bottom outlet of the mixing tank to filter impurities. The liquid coming out of the bottom outlet of the mixing tank is sent to the filter press under the action of a diaphragm pump. The filter press is provided with a filter plate, and the filter plate is provided with a sealing ring to prevent dripping. The liquid filtered by the filter press becomes clear and enters the night clearing tank to wait for secondary use. The sewage treatment system also includes a filter residue receiving tray, which is used to hold the filter residue. The filter residue receiving tray can also be provided with wheels for easy transportation.

[0024] Furthermore, in the sewage treatment system, the ionicity of PAM polyacrylamide in the PAM polyacrylamide solution is 20%-60%, and the concentration of PAC polyaluminium chloride in the PAC polyaluminium chloride solution is 26%-30%. Preferably, in the stirring tank, the PAC polyaluminium chloride solution needs to be added to the liquid in the stirring tank first, and then the PAM polyacrylamide solution is added, so that the dirt in the stirring tank can be removed.

[0025] In summary, in the pollution-free production method of the automobile covering product of the present invention, first, the worker takes the covering material for automobile covering, and then uses the glue spraying device to spray glue on the covering material for automobile covering. After that, the worker or the machine fits and positions the covering material sprayed with glue with the skeleton. After fitting and positioning, the manipulator takes the parts, and the manipulator after taking the parts puts the covering material and the skeleton that are bonded together into a constant temperature and constant pressure liquid pool, and uses a pressure head to press the covering material and the skeleton that are bonded together into the constant temperature and constant pressure pool and keep them pressed for a period of time, so that the temperature of the Newtonian or non-Newtonian fluid in the constant temperature and constant pressure liquid pool is fully transferred to the glue between the covering material and the skeleton. After completion, the pressure head is raised to obtain the automobile covering product, and then the automobile covering product is taken out by the manipulator, and then the glue spraying device is cleaned with water, and the sewage after cleaning is treated with medicine. Through the above method, on the one hand, since the high latent heat of the constant temperature and pressure liquid pool can stabilize the uniform temperature field, it can ensure sufficient latent heat to heat the fabric without obvious temperature fluctuations, ensure the consistency of glue activation, and thus improve the bonding strength between the skeleton and the coating material, thereby improving the quality of the coated product. At the same time, the sewage can also be reused after being treated with chemicals, reducing production costs and reducing harm to the environment.

[0026] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A pollution-free production method for automobile covering products, characterized in that: The following steps are involved: Step S1, taking a coating material for automobile coating; Step S2, using a glue spraying device to spray glue on the covering material for automobile covering in step S1; Step S3, positioning and bonding the automobile covering material after the glue is sprayed in step S2 to the frame; Step S4, pressing the automobile covering material and the frame that have been positioned and bonded in step S3 in a constant temperature and constant pressure liquid pool of the skin and then taking them out to complete the covering; Step S5, cleaning the glue spraying device used in step S2; Step S6, using a chemical to treat the wastewater left by cleaning the glue spraying device in step S5.

2. The pollution-free production method of automobile covering products according to claim 1, characterized in that: Before step S3, step S3-1 is provided, and step S3-1 comprises the following steps: grinding or applying putty to the skeleton to make the surface of the skeleton smooth.

3. The pollution-free production method of automobile covering products according to claim 1, characterized in that: The pollution-free production method of the automobile covering product also includes step S4-1, and the step S4-1 includes the following steps: visually inspecting the product obtained after the covering in step S4 is completed.

4. The pollution-free production method of automobile covering products according to claim 3, characterized in that: After step S4-1, step S4-2 is further provided, and step S4-2 comprises the following steps: removing the excess coating material contained in the product after the visual inspection in step S4-2.

5. The pollution-free production method of automobile covering products according to claim 1, characterized in that: In step S4, the automobile covering material and the frame that have been positioned and bonded are pressed in a constant temperature and constant pressure liquid pool of the skin for 10 seconds to 60 seconds and then taken out to complete the covering.

6. The pollution-free production method of automobile covering products according to claim 3, characterized in that: An intelligent visual inspection system is used to perform visual inspection on the product obtained after the coating in step S4, and the intelligent visual inspection system includes a high-definition camera and visual analysis software.

7. The pollution-free production method of automobile covering products according to claim 1, characterized in that: The constant temperature and constant pressure liquid pool contains a non-Newtonian fluid or a Newtonian fluid, and the constant temperature and constant pressure liquid pool is used to provide a stable temperature field and a stable covering force for the automobile covering covering material and the frame that have completed positioning and bonding.

8. The pollution-free production method of automobile covering products according to claims 1-7, characterized in that: The glue spraying device is a spray gun, and the reagent is a solution containing PAM polyacrylamide and a solution containing PAC polyaluminium chloride solution.

9. The pollution-free production method of automobile covering products according to claim 8, characterized in that: The glue spraying device is a spray gun, the ion degree of PAM polyacrylamide in the solution containing PAM polyacrylamide is 20%-60%, and the concentration of PAC polyaluminium chloride in the solution containing PAC polyaluminium chloride is 26%-30%.

10. The pollution-free production method of automobile covering products according to claim 9, characterized in that: The order of adding the solution containing PAM polyacrylamide and the solution containing PAC polyaluminium chloride is to first add the solution containing PAC polyaluminium chloride and then add the solution containing PAM polyacrylamide.

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