Automobile coating process

Abstract

The invention provides an automobile coating technology. The automobile coating technology comprises the following steps that S1, a coating material for automobile coating is taken; s2, glue is printed on the automobile coating material through a silk screen; s3, the automobile coating material printed with the glue in the step S2 is positioned and attached to the framework; and S4, the automobile coating material and the framework which are positioned and attached in the step S3 are pressed in a constant-temperature and constant-pressure liquid pool of the skin and then taken out, and coating is completed. In the automobile coating process, the glue is printed on the automobile coating material through the silk screen in the step S2, compared with a traditional mode that glue is sprayed on the automobile coating material manually or through a robot, the glue cannot be sprayed everywhere when the glue is printed on the automobile coating material through the silk screen, and the use efficiency of the glue is improved; and the pollution to the environment or a coating material is reduced.

Description

Technical Field

[0001] The invention relates to the field of automobile covering, in particular to an automobile covering process. Background Art

[0002] The glue coating process of the traditional coating industry is mainly the glue spraying process. The spraying process (whether manual or robot) has problems such as low glue utilization, poor working environment with glue mist, and the generation of glue-containing wastewater. When encountering products that require local glue spraying, traditional manual spraying requires tooling to be shielded, which will lead to more serious glue waste. The flying glue mist of the spray glue often contaminates the surface of the product, causing residual glue defects, reducing the first-time pass rate, and generating a large amount of quality cost waste. 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 vehicle wrapping process.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a car wrapping process, comprising the following steps: step S1, taking car wrapping material; step S2, printing glue on the car wrapping material using a screen; step S3, positioning and fitting the car wrapping material after printing glue in step S2 to a skeleton; step S4, pressing the car wrapping material and the skeleton that have been positioned and fitted in step S3 in a constant temperature and constant pressure liquid pool of a skin and then taking them out to complete the wrapping. In the above car wrapping process, in step S2, printing glue on the car wrapping material using a screen, compared with the traditional manual or robot spraying glue on the car wrapping material, printing glue on the car wrapping material using a screen will not spray glue everywhere, thereby improving the use efficiency of glue and reducing pollution to the environment or the wrapping material. At the same time, since a constant temperature and constant pressure liquid pool is used in the production process of the car wrapping product, the quality of the car wrapping product produced by the car wrapping process of the present invention is also higher, because the high flexibility of the liquid pool will not damage the surface of the car wrapping product. Moreover, the automobile wrapping product produced by the automobile wrapping process of the present invention has a longer service life. This is because the liquid pool is flexible and can fully wrap the automobile wrapping product. Under the condition of constant temperature and pressure of the liquid pool, the glue inside the automobile wrapping product can be heated more evenly and accurately, so that the degree of activation of the glue inside the automobile wrapping product is consistent, making the bonding force of the glue stronger, thereby increasing the service life of the automobile wrapping product.

[0005] Furthermore, in the automobile wrapping process, the wire mesh is a PU / PVC back foam material, and the PU / PVC back foam material is 500-700 mesh.

[0006] Furthermore, in the automobile wrapping process, the screen is PU / PVC thin fabric / non-woven fabric, and the PU / PVC thin fabric / non-woven fabric has a mesh size of 100-400.

[0007] Furthermore, in the automobile wrapping process, in step S4, the automobile wrapping material and the frame 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 wrapping.

[0008] Furthermore, in the automobile wrapping process, an intelligent visual inspection system is used to perform visual inspection on the product obtained after the wrapping in step S4, and the intelligent visual inspection system includes a high-definition camera and visual analysis software.

[0009] Furthermore, in the automobile wrapping process, 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 material and the frame that have been positioned and bonded.

[0010] Furthermore, in the automobile wrapping process, a step S5 is provided after the step S4, and the step S5 includes cleaning the screen in the step S2.

[0011] Furthermore, in the automobile wrapping process, step S6 is provided after step S5, and step S6 includes treating the wastewater generated by the cleaning in step S5 with a solution containing PAM polyacrylamide and a solution containing PAC polyaluminium chloride.

[0012] Furthermore, in the automobile covering process, the covering material is PVC skin, PU skin, genuine leather or knitted fabric.

[0013] Furthermore, in the automobile wrapping process, the speed of printing glue on the automobile wrapping material using a silk screen is 0.1 m / s to 2 m / s.

[0014] Compared with the automobile wrapping process of the prior art, the automobile wrapping process provided by the present invention includes: step S1, taking automobile wrapping material; step S2, printing glue on the automobile wrapping material using a screen; step S3, positioning and fitting the automobile wrapping material after printing glue in step S2 with the skeleton; step S4, pressing the automobile wrapping material and the skeleton that have been positioned and fitted in step S3 in a constant temperature and constant pressure liquid pool of the skin and then taking them out to complete the wrapping. In the above automobile wrapping process, in step S2, printing glue on the automobile wrapping material using a screen, compared with the traditional manual or robot spraying glue on the automobile wrapping material, printing glue on the automobile wrapping material using a screen will not spray glue everywhere, thereby improving the use efficiency of glue and reducing pollution to the environment or the wrapping material. At the same time, since a constant temperature and constant pressure liquid pool is used in the production process of automobile wrapping products, the quality of the automobile wrapping products produced by the automobile wrapping process of the present invention is also higher, because the high flexibility of the liquid pool will not damage the surface of the automobile wrapping product. Moreover, the automobile wrapping product produced by the automobile wrapping process of the present invention has a longer service life. This is because the liquid pool is flexible and can fully wrap the automobile wrapping product. Under the condition of constant temperature and pressure of the liquid pool, the glue inside the automobile wrapping product can be heated more evenly and accurately, so that the degree of activation of the glue inside the automobile wrapping product is consistent, making the bonding force of the glue stronger, thereby increasing the service life of the automobile wrapping 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 the automobile coating process 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] In the process of car wrapping, glue is needed to bond the car wrapping material and the frame. The traditional method of applying glue on the car wrapping material is to use the spraying method. Using this method to spray glue on the wrapping material will cause the sprayed glue to form glue microparticles in the air. These glue microparticles will adhere to the wrapped product, causing product contamination and reducing the product qualification rate. At the same time, if it is necessary to spray glue locally on the wrapping material, traditional manual spraying requires tooling to be shielded, which will lead to more serious waste of glue. Therefore, the inventor proposed a car wrapping process. Figure 1As shown, the automobile wrapping process is as follows: Step S1, first take the automobile wrapping material, the automobile wrapping material is usually PVC skin, PU skin, leather or knitted fabric; Step S2, use screen to print glue on the automobile wrapping material, step S3, position and fit the automobile wrapping material after printing glue in step S2 with the skeleton; step S4, press the automobile wrapping material and the skeleton that have been positioned and fitted in step S3 in the constant temperature and pressure liquid pool of the skin and then take it out to complete the wrapping. The use of screen printing glue can greatly improve the production efficiency of automobile wrapping, reduce glue consumption, and reduce production costs because of its high printing efficiency. At the same time, because there is no glue mist / artificial secondary pollution, the problem of residual glue contaminating the fabric generated in the traditional spraying operation is completely eliminated, and the first-time qualified rate is greatly improved. In the present invention, the automobile wrapping process of the present invention adopts a constant temperature and constant pressure liquid pool during wrapping, and the constant temperature and constant pressure liquid pool is flexible on the one hand, and the flexible liquid pool can fully wrap the automobile wrapping material and the skeleton, and can fully transfer heat to the automobile wrapping material and the skeleton wrapped by the liquid pool, so that the glue sprayed between the automobile wrapping material and the skeleton wrapped by the liquid pool is activated more consistently, so compared with the automobile wrapping products produced by the existing automobile wrapping process, the bonding force between the skeleton and the automobile wrapping material is stronger, so that the automobile wrapping products produced by the automobile wrapping process of the present invention are of higher quality. And the surface of the obtained automobile wrapping product will not be damaged. In the present invention, the Newtonian fluid or non-Newtonian fluid is located in the constant temperature and constant pressure pool, and is wrapped by a skin to isolate the Newtonian fluid or non-Newtonian fluid from the completed laminating wrapping material and skeleton. The skin here is a material, which can be a leather fabric.

[0021] Further, in the automobile wrapping process of the present invention, the screen used for screen printing is a PU / PVC back foam material, and the PU / PVC back foam material is 500-700 mesh. Since the PU / PVC back foam material has the characteristics of good compressibility and high elasticity, the better the compressibility, the greater the amount of glue output, and combined with the PU / PVC back foam material of 500-700 mesh, the screen using the PU / PVC back foam material can produce glue faster and more evenly, and the faster glue output increases the production speed of automobile wrapping products and improves efficiency. The more even glue output makes the glue between the automobile wrapping material and the skeleton more even, improves the bonding force between the automobile wrapping material and the skeleton, and reduces glue waste. In an embodiment, preferably, the speed of printing glue on the automobile wrapping material using the screen is 0.1 m / s-2 m / s. At this speed, the amount of glue (thickness of the glue layer) printed once can achieve the required bonding strength.

[0022] Further, in the automobile wrapping process of the present invention, the screen is a PU / PVC thin fabric / non-woven fabric, and the PU / PVC thin fabric / non-woven fabric is 100-400 mesh. The PU / PVC thin fabric / non-woven fabric has the characteristics of poor compressibility and low elasticity. The worse the compressibility, the stronger its water absorption, and the more it needs to increase the amount of glue. In addition, the PU / PVC thin fabric / non-woven fabric is 100-400 mesh, which can also make the glue output faster and more uniform. In addition, the production speed of automobile wrapping products is also accelerated and the efficiency is improved. Similarly, more uniform glue output makes the glue between the automobile wrapping material and the skeleton more uniform, improves the bonding force between the automobile wrapping material and the skeleton, and reduces glue waste. Preferably, in this embodiment, the speed of printing glue on the automobile wrapping material using the screen is 0.1 m / s-2 m / s. At this speed, the amount of glue (thickness of the glue layer) printed once can achieve the required bonding strength.

[0023] Further, in the automobile wrapping process provided by the present invention, before the automobile wrapping process provided by the present invention is used to produce automobile wrapping products, it is necessary to first detect the raw materials constituting the automobile wrapping products, and the automobile wrapping raw materials include automobile wrapping materials and skeletons. Because there may be defects such as breakage, depression, and particles on the surface of the skeleton, and there may also be indentations, damage, and other phenomena on the surface of the automobile wrapping material. Since the glue cannot be torn off the skin from the skeleton intact once it is solidified, part of the back bubble and glue will stick to the skeleton when the skin is torn off and cannot be cleaned, so workers are required to carefully check the skeleton and the wrapping material before wrapping to reduce the defective rate. When there are defects such as breakage, depression, and particles on the surface of the skeleton, sandpaper can be used to polish the surface of the skeleton, and if necessary, it is necessary to apply putty appropriately to make the surface of the skeleton flat. When the coating material has appearance defects such as indentations and damage, it is only necessary not to use the coating 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 applying glue to the covering material for automobile covering by screen printing. Of course, the steps of testing and polishing the skeleton must occur before positioning and laminating the covering material for automobile and the skeleton. And the testing of the covering material should of course occur before using the covering material.

[0024] Furthermore, in the automobile wrapping process provided by the present invention, the wrapped product obtained after the wrapping can be inspected by an intelligent visual defect detection system. The purpose of the inspection is to quickly discover product defects and improve work efficiency. The intelligent visual inspection system may include a high-definition camera and visual analysis software. The high-definition camera is used to take photos 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 inspection system may also contain excess wrapping materials. At this time, the on-site staff can remove the excess materials.

[0025] Furthermore, in the automobile wrapping process provided by the present invention, the constant temperature and constant pressure liquid 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 wrapping force for the automobile wrapping material and the frame that have been positioned and bonded. In the present invention, the Newtonian fluid can be water, and the non-Newtonian fluid can be petroleum, mud, coal-water slurry, ceramic slurry, pulp, etc.

[0026] Further, in the automobile wrapping process of the present invention, the automobile wrapping process may also include a step of cleaning the screen for printing glue on the wrapping material, and specifically, the glue-containing wastewater left by cleaning the screen may be collected. It can be seen that the automobile wrapping process provided by the present invention can generate very little wastewater compared to the production process of the prior art, because the screen needs to be cleaned only when production is not required. Preferably, the collected wastewater can be cleaned with a medicament. The medicament may be a solution containing PAM polyacrylamide and a solution containing PAC polyaluminum chloride. Preferably, the ionicity of PAM polyacrylamide in the solution containing PAM polyacrylamide is 20%-60%, and the concentration of PAC polyaluminum chloride in the solution containing PAC polyaluminum chloride is 26%-30%. Preferably, in the stirring tank, the PAC polyaluminum 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.

[0027] In summary, in the automobile wrapping process of the present invention, first, the worker takes the automobile wrapping material, and then uses the screen to print glue on the automobile wrapping material. After that, the worker or the machine fits and positions the wrapping material printed with glue with the skeleton. After fitting and positioning, a manipulator can be used to pick up the parts. After taking the parts, the manipulator puts the laminated coating material and the skeleton into a constant temperature and constant pressure liquid pool, and a pressure head can be used to press the laminated coating material and the skeleton into the constant temperature and constant pressure pool to keep the pressure 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 coating material and the skeleton. After completion, the pressure head is raised to obtain the automobile wrapping product, and then the automobile wrapping product is taken out by the manipulator. After all the production is completed, the screen can be washed with water, and the sewage after washing can be treated with medicine. Through the above method, on the one hand, compared with the traditional manual or robot spraying glue on the automobile covering material, the use of screen printing glue on the automobile covering material will not spray glue everywhere, which improves the use efficiency of glue and reduces the pollution to the environment or covering materials. After the production is completed, only the screen needs to be cleaned, less waste water is generated, and the cost of processing is also low. On the other hand, 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 automobile covering process of 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 automobile covering process of the present invention has a longer service life, because the liquid pool is flexible, which can fully wrap the automobile covering product, and 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, so that the bonding force of the glue is stronger, thereby increasing the service life of the automobile covering product.

[0028] 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 car wrapping process, characterized in that: include, Step S1, taking automobile covering materials and a frame; Step S2, printing glue on the automobile covering material using a silk screen; Step S3, positioning and laminating the automobile covering material after the glue is printed in step S2 to the frame; Step S4, the automobile covering material and the frame which have been positioned and bonded in step S3 are pressed together in a constant temperature and constant pressure liquid pool of the skin and then taken out to complete the covering.

2. The automobile coating process according to claim 1, characterized in that: The wire mesh is a PU / PVC back foam material, and the PU / PVC back foam material has a mesh size of 500-700.

3. The automobile coating process according to claim 1, characterized in that: The silk screen is PU / PVC thin fabric / non-woven fabric, and the PU / PVC thin fabric / non-woven fabric has a mesh size of 100-400.

4. The automobile coating process 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.

5. The automobile wrapping process 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.

6. The automobile coating process 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 material and the frame that have been positioned and bonded.

7. The automobile coating process according to claim 1, characterized in that: After step S4, step S5 is further provided, and step S5 includes the following steps: cleaning the screen in step S2.

8. The automobile wrapping process according to claim 7, characterized in that: After step S5, step S6 is further provided, and step S6 comprises the following steps: using a solution containing PAM polyacrylamide and a solution containing PAC polyaluminium chloride to treat the wastewater generated by the cleaning in step S5.

9. The automobile wrapping process according to claims 1-8, characterized in that the wrapping material is PVC skin, PU skin, genuine leather or knitted fabric.

10. The automobile coating process according to claims 1-8, characterized in that: The speed of printing glue on the automobile covering material by using a silk screen is: 0.1 m / s to 2 m / s.

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