CN111632806A - Application of plasma process in production process of automobile gluing tail door - Google Patents
Application of plasma process in production process of automobile gluing tail door Download PDFInfo
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- CN111632806A CN111632806A CN202010542230.6A CN202010542230A CN111632806A CN 111632806 A CN111632806 A CN 111632806A CN 202010542230 A CN202010542230 A CN 202010542230A CN 111632806 A CN111632806 A CN 111632806A
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- 238000004026 adhesive bonding Methods 0.000 title claims abstract description 56
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000009832 plasma treatment Methods 0.000 claims abstract description 30
- 238000001746 injection moulding Methods 0.000 claims abstract description 19
- 238000005507 spraying Methods 0.000 claims abstract description 15
- 239000000084 colloidal system Substances 0.000 claims abstract description 8
- 239000003292 glue Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 17
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 3
- 239000003973 paint Substances 0.000 description 9
- 238000002474 experimental method Methods 0.000 description 8
- 239000002390 adhesive tape Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
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- 125000000524 functional group Chemical group 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
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- 238000011056 performance test Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 125000001183 hydrocarbyl group Chemical group 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
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- 238000011028 process validation Methods 0.000 description 1
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- 238000010200 validation analysis Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- 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
- B05D7/02—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 to macromolecular substances, e.g. rubber
- B05D7/04—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 to macromolecular substances, e.g. rubber to surfaces of films or sheets
-
- 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
- B05D3/14—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 electrical means
- B05D3/141—Plasma treatment
- B05D3/142—Pretreatment
- B05D3/144—Pretreatment of polymeric substrates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
-
- 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
- B05D2201/00—Polymeric substrate or laminate
- B05D2201/02—Polymeric substrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C2045/0096—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor drying the moulding material before injection, e.g. by heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
Abstract
The invention particularly relates to application of a plasma process to a production process of an automobile gluing tail door. The production process of the automobile glued tail door comprises the following steps: step 1, injection molding of a tail gate; step 2, performing plasma treatment on the product after injection molding in a gluing path area to require a dyne index of more than 44, simultaneously performing laser coding to ensure that the product after plasma treatment has traceability, and scanning codes for warehousing; step 3, spraying the product after plasma treatment; step 4, gluing the sprayed product; step 5, after gluing, drawing force requirements of mounting points on first unfinished products in each production batch are more than 200N, curing strength after 24 hours is more than 1N/mm, and drawing requirements are met; the peeling area of the colloid accounts for more than 80 percent of the whole gluing surface. The production process of the automobile gluing tail door solves the problem that the existing process needs to be additionally provided with manual shielding because the functional requirements of the glued product cannot be met, can replace the existing production process, can reduce the personnel operation, reduce the cost, shorten the production period, achieve the automation requirement, and have great social benefit.
Description
Technical Field
The invention belongs to the technical field of automobile manufacturing, relates to a production process of an automobile gluing tail door, and particularly relates to application of a plasma process to the production process of the automobile gluing tail door.
Background
The automobile tail gate is an important component of an automobile and plays a role in opening loaded goods and passengers to get in and out. The tail gate generally divide into inner panel, planking, reinforcing plate 3 part, is panel beating stamping structure, and the material thickness is between 0.65 ~ 0.8 mm. Most tail doors adopt rear-mounted spoilers, and a small number of vehicle-type metal outer plates integrate the spoilers.
The existing production process of the glued tail door is formed by spraying paint on an injection-molded lining and an injection-molded outer plate and then gluing the sprayed paint, and the production process comprises the following steps: injection molding, manual shielding, spraying, cleaning of shielding adhesive tape, gluing and shipping, wherein the injection molding of the inner liner and the outer plate in the production process has very low adhesive force (the dyne value is less than 40) of injection molding materials (PP-EPDM, PCABS) and after gluing, the glue layer can be basically stripped from the paint layer and injection molding layer without reaching the drawing force ((>1N/mm2) The requirement is that the coating path of the injection-molded part needs to be manually shielded before the injection-molded part is coated with paint, the shielding object needs to be manually removed before coating, and the following defects exist in the manual shielding process: a large amount of manual operation is required; long cycle times (25 minutes are required to cover a set of products); the shielding adhesive tape which is unstable in manual shielding operation can be stuck to the appearance surface to cause defects; the manual shielding process has the problems of time and labor waste and the like due to low efficiency. The following disadvantages exist in the process of removing and removing the masking tape: a large amount of manual operation is needed to remove the adhesive tape; long cycle times (10 minutes to remove a set of products); a large amount of paint mist and dust can be generated in the process, and the quality hidden trouble is caused.
Along with the requirement of light weight trend of automobiles, the automobile types using the glued tail door are more and more, and the existing process can not meet the automation requirement. Therefore, the development of a production process of the automobile gluing tail door becomes a problem to be solved urgently at present.
Disclosure of Invention
Aiming at the problems, the invention provides a production process of an automobile gluing tail door, and provides application of a plasma process in the production process of the automobile gluing tail door. The production process of the automobile gluing tail door provided by the invention solves the problem that the existing process needs to be additionally provided with manual shielding because the functional requirements of the glued product cannot be met, can replace the existing production process, can reduce the personnel operation, reduce the cost, shorten the production period, achieve the automation requirement and have great social benefit.
In order to achieve the above object, the present invention provides the following technical proposals.
A production process of an automobile gluing tail door specifically comprises the following steps.
Step 1, injection molding of the tail gate.
And 2, performing plasma treatment on the gluing path region by the product after injection molding to require a dyne index of more than 44, simultaneously performing laser coding to ensure that the product after plasma treatment has traceability, and scanning codes and warehousing.
And 3, spraying the product after plasma treatment.
And 4, gluing the sprayed product.
Step 5, after gluing, the first product of each production batch requires the requirement of the drawing force of the mounting point>200N, curing Strength after 24 hours>1N/mm2Drawing requirements; the ratio of the peeling area of the colloid to the whole glue coating surface>80％。
The specific method in the step 1 comprises the following steps: pre-drying the modified material at the drying temperature of 95 +/-5 ℃ for 2 hours; and (3) conveying the material barrel, closing the die and performing injection molding, wherein the injection molding temperature is 230 ℃, the die temperature is 30 ℃, and cooling and opening the die to take out the part.
The specific method in the step 2 comprises the following steps: and (3) carrying out plasma treatment on the gluing path area by the molded product, wherein the distance between a plasma nozzle and the product is 1-1.5cm, the dyne index of the product after plasma treatment is required to be greater than 44, meanwhile, carrying out laser coding to ensure that the product after plasma treatment has traceability, and scanning and warehousing.
The specific method in the step 3 comprises the following steps: the spraying process parameters of the product after plasma treatment are as follows: the spraying temperature is 22-26 ℃, the humidity is 60-70%, and the wind speed is 0.25-0.5 m/s.
The specific method in the step 4 comprises the following steps: the technological parameters of the sprayed product glue coating are as follows: the gluing temperature is 15-25 ℃, the glue opening time is less than 3min, and the glue curing temperature is 50-60 ℃.
The concrete method of the step 5 comprises the following steps: the drawing force requirement of mounting points is required for the first product pieces of each production batch after gluing>200N, curing Strength after 24 hours>1N/mm2Drawing requirements; the ratio of the peeling area of the colloid to the whole glue coating surface>80％。
The beneficial effects of the invention are as follows.
1) The production process of the automobile gluing tail door provided by the invention can greatly reduce the labor and material costs. Take the tail gate product as an example: the manual shielding of the inner liner and the outer plate requires 2 persons, the shielding time of one set of products is 25 minutes, the shielding material is used for 9.71 yuan/piece, the manual shielding material removing operation of 1 person is needed before gluing, and the shielding material removing time is 5 minutes. The plasma treatment of the inner liner and the outer plate of the invention is carried out by 1 person, the plasma treatment of a set of products takes 2 minutes, and the invention has no cost of the shielding material, no manual work for removing the shielding material and no time for removing the shielding material.
2) The production process of the automobile gluing tail door provided by the invention reduces the process flow of manually shielding and removing the shielding adhesive tape in the prior art, and improves the production efficiency; the automation replaces the manual work, and the stability is strong; the spraying defects caused by manual shielding are reduced, and the product percent of pass is improved.
3) The production process of the automobile glued tail door provided by the invention has universal applicability and is suitable for all automobile parts which are subjected to injection molding, spraying and gluing.
Drawings
Fig. 1 is a schematic view of the principle of plasma processing.
FIG. 2 is a diagram comparing the plasma treatment before the glue application with the non-plasma treatment.
FIG. 3 is a functional experimental method.
FIG. 4 is a comparison of the results of the pull force test for the manual masking process and the in-situ plasma process.
FIG. 5 shows the results of product performance tests made using the process provided in example 1 of the present invention.
FIG. 6 shows the results of the functional test of the whole vehicle using all the parts machined by the present invention.
Detailed Description
The invention will be further described with reference to specific embodiments and the accompanying drawings.
Example 1 production process of automotive rubberized tailgate.
A production process of an automobile gluing tail door specifically comprises the following steps.
Step 1, injection molding of the tail gate.
And 2, performing plasma treatment on the gluing path region by the product after injection molding to require a dyne index of more than 44, simultaneously performing laser coding to ensure that the product after plasma treatment has traceability, and scanning codes and warehousing.
And 3, spraying the product after plasma treatment.
And 4, gluing the sprayed product.
Step 5, after gluing, the first piece of the product in each production batch requires that the drawing force of the mounting point is more than 200N, the curing strength after 24 hours is more than 1.0Mpa, and the drawing requirements are met; the peeling area of the colloid accounts for more than 80 percent of the whole gluing surface.
The specific method of the step 1 comprises the following steps: pre-drying the modified material at the drying temperature of 95 +/-5 ℃ for 2 hours; and (3) conveying the material barrel, closing the die and performing injection molding, wherein the injection molding temperature is 230 ℃, the die temperature is 30 ℃, and cooling and opening the die to take out the part.
The specific method of the step 2 comprises the following steps: carrying out plasma treatment on the gluing path area by the molded product, wherein the distance between a plasma nozzle and the product is 1-1.5 mm; and the dyne index after plasma treatment is required to be greater than 44, and laser coding is carried out to ensure that the product after plasma treatment has traceability, code scanning and warehousing.
The specific method of the step 3 comprises the following steps: the spraying process parameters of the product after plasma treatment are as follows: the spraying temperature is 22-26 ℃, the humidity is 60-70%, and the wind speed is 0.25-0.5 m/s.
The specific method of the step 4 comprises the following steps: the glue coating technological parameters of the sprayed product are as follows: the gluing temperature is 15-25 ℃, the glue opening time is less than 3min, and the glue curing temperature is 50-60 ℃.
The specific method of the step 5 comprises the following steps: the drawing force requirement of mounting points is required for the first product pieces of each production batch after gluing>200N, curing Strength after 24 hours>1N/mm2Drawing requirements; the ratio of the peeling area of the colloid to the whole glue coating surface>80％。
Example 2 action principle of plasma surface treatment.
The principle schematic diagram of plasma treatment is shown in fig. 1, the paint surface is treated by plasma, so that the paint surface generates various physical and chemical changes or is etched to be rough, and molecules on the paint surface and molecules of glue form a compact cross-linked layer; plasma treating PP substrate to activate surface molecules of the substrate and enable the surface molecules of the polymer
Form a dense cross-linked layer with paint molecules.
1. Activation of bond energy, crosslinking.
The particle energy in the plasma is 0-20 eV, and most of bonds in the polymer are 0-10 eV, so that the original chemical bonds on the solid surface can be broken after the plasma acts on the solid surface, and the bonds in the free radicals in the plasma form a net-shaped cross-linking structure, thereby greatly activating the surface activity.
2. Forming new functional groups.
Chemical action: if reactive gas is introduced into the discharge gas, complex chemical reaction can occur on the surface of the activated material, and new functional groups, such as hydrocarbon group, amino group, carboxyl group and the like, are introduced, and are active groups, so that the surface activity of the material can be obviously improved.
3. Etching the surface of the material.
Physical action: a large number of active particles such as ions, excited molecules, free radicals and the like in the plasma act on the surface of the solid sample to remove original pollutants and impurities on the surface, and the etching effect is generated to roughen the surface of the sample to form a plurality of micro pits, so that the specific surface area of the sample is increased. The wetting property of the solid surface is improved.
Example 3 plasma process validation (gumming equipment plasma validation).
1. The experimental conditions are as follows: and (3) carrying out plasma treatment on the plastic part in advance to form a gluing path, storing the product for 1-14 days, spraying and gluing.
2. Experimental equipment: f39 tail door gluing equipment, a plasma machine (TIGERS), a universal tensile machine (ZWICK BT2-EXMACRO. BL), and a tension meter (MODEL SH-500).
3. The experimental method comprises the steps of selecting a slice sample on a product after the product subjected to ① gumming is cured for 24 hours (two sampling points are selected at the upper part, the lower part, the left part and the right part respectively), cutting the sample into a long strip shape with the length of 20mm by ②, fixing a lining part of the sample on a drawing force workbench by ③, punching an outer plate part, measuring the drawing force by using a tension meter, drawing and cutting the sample by ④, recording the tension data, and measuring the area of a glue layer after the drawing and cutting (for example, the length of the sample is 20mmX, the width of the sample is 10mm, namely 2002According to>1N/mm2A slice sample drawing force greater than 200N proves satisfactory for function, and less than 200N does not meet the functional requirement), as shown in fig. 2 and 3.
4. The experimental standard is as follows: cured Strength after 24 hours>1N/mm2Drawing requirements; the ratio of the peeling area of the colloid to the whole glue coating surface>80%, internal standard.
5. And (5) experimental results.
1) The comparison of the existing gluing tail gate process and the process function experimental results provided by the invention is shown in tables 1-2, and the data and the curve chart show that the gluing tail gate production process provided by the invention is superior to the existing gluing tail gate production process, as shown in fig. 4.
Table 1. results of the manual masking process pull force test.
Table 2. the results of the in-situ plasma process pullout force test.
2) A series of functional experiments on the product prepared by the process provided in example 1 of the present invention performed according to the experimental method all met the experimental standards, as shown in table 3 and fig. 5.
Table 3 product performance test results.
Example 4 whole vehicle functional experiments.
1. The experimental conditions are as follows: the parts processed by the invention are all used for carrying out the whole vehicle function experiment.
2. The experimental set-up is shown in Table 4.
TABLE 4 Experimental Equipment.
3. The experimental methods are shown in Table 5.
TABLE 5 Experimental methods.
4. The experimental standard is as follows: PR 309.2; PR 303.5.
5. The experimental results are as follows: the experimental requirements were met and the results were acceptable, as shown in fig. 6.
Claims (6)
1. The production process of the automobile gluing tail door is characterized by comprising the following steps:
step 1, injection molding of a tail gate;
step 2, performing plasma treatment on the product after injection molding in a gluing path area to require a dyne index of more than 44, simultaneously performing laser coding to ensure that the product after plasma treatment has traceability, and scanning codes for warehousing;
step 3, spraying the product after plasma treatment;
step 4, gluing the sprayed product;
step 5, after gluing, drawing force requirements of mounting points on first unfinished products in each production batch are more than 200N, curing strength after 24 hours is more than 1N/mm, and drawing requirements are met; the peeling area of the colloid accounts for more than 80 percent of the whole gluing surface.
2. The production process of the automobile gluing tail door as claimed in claim 1, wherein the specific method of the step 1 is as follows: pre-drying the modified material at the drying temperature of 95 +/-5 ℃ for 2 hours; and (3) conveying the material barrel, closing the die and performing injection molding, wherein the injection molding temperature is 230 ℃, the die temperature is 30 ℃, and cooling and opening the die to take out the part.
3. The production process of the automobile gluing tail door as claimed in claim 1, wherein the specific method in the step 2 is as follows: and (3) carrying out plasma treatment on the gluing path area by the molded product, wherein the distance between a plasma nozzle and the product is 1-1.5cm, the dyne index of the product after plasma treatment is required to be greater than 44, meanwhile, carrying out laser coding to ensure that the product after plasma treatment has traceability, and scanning and warehousing.
4. The production process of the automobile gluing tail door as claimed in claim 1, wherein the specific method in the step 3 is as follows: the spraying process parameters of the product after plasma treatment are as follows: the spraying temperature is 22-26 ℃, the humidity is 60-70%, and the wind speed is 0.25-0.5 m/s.
5. The production process of the automobile gluing tail door as claimed in claim 1, wherein the specific method in the step 4 comprises the following steps: the technological parameters of the sprayed product glue coating are as follows: the gluing temperature is 15-25 ℃, the glue opening time is less than 3min, and the glue curing temperature is 50-60 ℃.
6. The production process of the automobile gluing tail door as claimed in claim 1, wherein the specific method in the step 5 is as follows: the drawing force requirement of mounting points on the first unfinished product in each production batch after gluing is more than 200N, the curing strength after 24 hours is more than 1N/mm, and the drawing requirements are met; the peeling area of the colloid accounts for more than 80 percent of the whole gluing surface.
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| CN202010542230.6A CN111632806A (en) | 2020-06-15 | 2020-06-15 | Application of plasma process in production process of automobile gluing tail door |
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| CN202010542230.6A CN111632806A (en) | 2020-06-15 | 2020-06-15 | Application of plasma process in production process of automobile gluing tail door |
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| CN113763469A (en) * | 2021-08-03 | 2021-12-07 | 东风悦达起亚汽车有限公司 | BPR glue spraying process for automobile door |
| CN115195873A (en) * | 2022-07-15 | 2022-10-18 | 安徽金诚复合材料有限公司 | Integrated full-plastic tail gate and processing method thereof |
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|---|---|---|---|---|
| CN113763469A (en) * | 2021-08-03 | 2021-12-07 | 东风悦达起亚汽车有限公司 | BPR glue spraying process for automobile door |
| CN115195873A (en) * | 2022-07-15 | 2022-10-18 | 安徽金诚复合材料有限公司 | Integrated full-plastic tail gate and processing method thereof |
| CN115195873B (en) * | 2022-07-15 | 2023-10-20 | 安徽金诚复合材料有限公司 | Integrated full-plastic tail gate and processing method thereof |
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Application publication date: 20200908 |