CN115489133B - Automobile body film coating method and automobile body processing technology - Google Patents
Automobile body film coating method and automobile body processing technology Download PDFInfo
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- CN115489133B CN115489133B CN202211192451.0A CN202211192451A CN115489133B CN 115489133 B CN115489133 B CN 115489133B CN 202211192451 A CN202211192451 A CN 202211192451A CN 115489133 B CN115489133 B CN 115489133B
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- 238000000034 method Methods 0.000 title claims abstract description 49
- 239000007888 film coating Substances 0.000 title claims abstract description 26
- 238000009501 film coating Methods 0.000 title claims abstract description 26
- 238000005516 engineering process Methods 0.000 title claims abstract description 21
- 238000012545 processing Methods 0.000 title claims abstract description 13
- 238000000576 coating method Methods 0.000 claims abstract description 47
- 239000011248 coating agent Substances 0.000 claims abstract description 34
- 238000001962 electrophoresis Methods 0.000 claims abstract description 26
- 230000008569 process Effects 0.000 claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 claims abstract description 22
- 238000005507 spraying Methods 0.000 claims abstract description 18
- 239000003292 glue Substances 0.000 claims abstract description 16
- 238000010030 laminating Methods 0.000 claims abstract description 16
- 239000000853 adhesive Substances 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 238000003466 welding Methods 0.000 claims abstract description 10
- 238000005520 cutting process Methods 0.000 claims abstract description 8
- 230000001070 adhesive effect Effects 0.000 claims abstract description 3
- 239000012528 membrane Substances 0.000 claims description 12
- 239000000428 dust Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000003892 spreading Methods 0.000 claims description 5
- 230000007480 spreading Effects 0.000 claims description 5
- 238000005238 degreasing Methods 0.000 claims description 4
- 230000000670 limiting effect Effects 0.000 claims description 4
- 238000001179 sorption measurement Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 238000003698 laser cutting Methods 0.000 claims description 3
- 239000002828 fuel tank Substances 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 238000009423 ventilation Methods 0.000 abstract 1
- 238000007514 turning Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000003750 conditioning effect Effects 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 210000002489 tectorial membrane Anatomy 0.000 description 3
- 230000002421 anti-septic effect Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000002966 varnish Substances 0.000 description 1
Classifications
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- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/001—Joining in special atmospheres
- B29C66/0012—Joining in special atmospheres characterised by the type of environment
- B29C66/0014—Gaseous environments
- B29C66/00145—Vacuum, e.g. partial vacuum
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/022—Mechanical pre-treatments, e.g. reshaping
- B29C66/0224—Mechanical pre-treatments, e.g. reshaping with removal of material
- B29C66/02241—Cutting, e.g. by using waterjets, or sawing
-
- 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
- B29L2031/3002—Superstructures characterized by combining metal and plastics, i.e. hybrid parts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
Abstract
The invention relates to an automobile body film coating method and an automobile body processing technology. The method for coating the automobile body comprises the steps of coating the automobile body frame and the sub-adhesive piece, and coating the automobile body frame: dedusting and positioning a vehicle body frame; cutting the film; adsorbing the car film and spraying glue to the car film; the vehicle film is aligned to the position of the vehicle body frame to be film-adhered and flattened, so that film coating of the vehicle body frame is realized; laminating the adhesive parts: dedusting and spraying glue to the separate pasting pieces; and (3) ventilation is carried out in the bagging type car film, the sub-pasting piece is placed in the bagging type car film, sealing and vacuumizing are carried out, and the bagging type car film is sealed and pressed, so that the film covering of the sub-pasting piece is realized. The invention also provides an automobile body processing technology, which comprises the following steps: manufacturing a vehicle body frame and the sub-stickers by adopting stamping and welding processes, and respectively performing electrophoresis treatment; the method for coating the automobile body is adopted to coat the automobile body frame and the sub-pasting pieces; and assembling the sub-mounting piece and the vehicle body frame. The invention solves the problems of large energy consumption, heavy pollution and insufficient individuation in the existing vehicle body film coating process.
Description
Technical Field
The invention relates to the technical field of automobile manufacturing, in particular to an automobile body film coating method and an automobile body processing technology.
Background
With the continuous improvement of the living standard of people, automobiles become necessary for a plurality of families. In the automobile production and manufacturing process, a coating process is often adopted to coat an automobile body so as to form a protective layer to protect the automobile body, and meanwhile, the appearance attractiveness can be improved. However, the coating process has the problems of high energy consumption, heavy pollution, insufficient individuation and the like. In recent years, a plurality of novel process technologies for realizing the appearance color of the automobile, such as an anodic oxidation technology and a cold-rolled steel tempering technology, are proposed, but the two technologies have the problems of insufficient individuation and difficult maintenance after damage; for example, the electronic paper attaching technology has the problems of high manufacturing cost and difficult maintenance although the individuation is strong. In addition, some automobile refitting shops provide automobile body color changing service, and have the advantages of being strong in individuation and good in effect, but the color changing technology is required to be manually coated, so that the problems of low efficiency, high cost, non-uniform standards and the like exist, and batch production cannot be carried out.
The utility model discloses a full-automatic roof subsides change look membrane apparatus for producing among the prior art, this apparatus for producing can follow the material loading of changing the look membrane, cut off, take up, paste dress and excision skylight region and the peripheral unnecessary change look membrane of roof and wait the multichannel process realize full-automatic roof subsides dress change look membrane to replace traditional manual operation, improve work efficiency by a wide margin, also improve the accuracy of dress simultaneously, labour saving and time saving. However, the device is only one film sticking solution provided for the local position of the automobile, and can not replace a coating process to realize film sticking of the whole automobile.
Disclosure of Invention
The invention aims to provide a method for coating a car body and a car body processing technology, so as to realize coating of the whole car body of a car and solve the problems of high energy consumption, heavy pollution and insufficient individuation of the existing car body coating technology.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
An automotive body laminating method, which is to separately laminate an electrophoretically treated body frame and a separate piece, comprising:
Film coating of a vehicle body frame:
dedusting and positioning the vehicle body frame subjected to the electrophoresis treatment;
cutting the car film according to the shape and the size of the film of the car body frame;
adsorbing the front surface of the car film, and spraying glue to the back surface of the car film;
The vehicle film is aligned to the outer surface of the vehicle body frame to be adhered with the film for adhering treatment, and a follower roller is adopted for flattening, so that the film coating of the vehicle body frame is realized;
laminating the adhesive parts:
Carrying out dust removal and glue spraying treatment on the separated pieces subjected to the electrophoresis treatment; the sub-attaching piece comprises a car body panel, a front anti-collision beam, a rear anti-collision beam and a door handle;
And (3) introducing compressed air into the bagging type vehicle film, placing the sub-pasting piece into the bagging type vehicle film, sealing and vacuumizing, and sealing and compacting the bagging type vehicle film by adopting a heating roller to realize the film covering of the sub-pasting piece.
According to the technical means, the film is coated on the vehicle body frame in a film coating mode and the film is coated on the split sticking piece by the pocket type vehicle film, so that the film coating on the whole vehicle body of the automobile can be realized, the film coating in the existing coating process is replaced, and the problems of high energy consumption, heavy pollution and insufficient individuation in the existing vehicle body film coating process are solved.
The conventional car film is in a paper shape, the bagging type car film is similar to a film food packaging bag, the separated piece is arranged in the bagging type car film similar to a packaging bag, and vacuum is pumped from a mouth part, so that the lamination of the bagging type car film and the surface of the separated piece is realized.
Preferably, the follower roller flattening comprises a first follower roller flattening and a second follower roller flattening;
The following roller is flattened at one time specifically: the following roller is moved to be attached to the outer surface of the vehicle body frame, and then vibrates at a high speed, so that the roller is changed between stressed and unstressed, and the roller moves to keep following with the vehicle body frame, and the preliminary spreading of the vehicle body frame film is realized;
The secondary flattening of the follower roller is specifically as follows: the follower roller with temperature is moved to be attached to the outer surface of the vehicle body frame, and then high-speed vibration is carried out, so that the roller is changed between stressed and unstressed, and the follower roller is moved to keep a shape following the vehicle body frame, and the adsorption force of the vehicle body frame and the vehicle film is increased;
the follower roller is made of non-Newtonian fluid materials.
Preferably, the vehicle body frame film is specifically: the vehicle body frame subjected to the electrophoresis treatment is subjected to dust removal treatment by adopting compressed air, and the vehicle body frame is positioned by a limiting device; cutting the car film according to the shape and the size of the film of the car body frame; adsorbing the edge part of the front surface of the car film through a tool for adsorbing the car film, and spraying glue on the back surface of the car film; and (3) aligning the vehicle film with the outer surface of the vehicle body frame to be film-adhered to carry out attaching treatment, and adopting a follower roller to carry out twice flattening to realize film coating of the vehicle body frame.
The vehicle body frame has the characteristics of large volume, heavy weight, large covered film span, strong shape irregularity and the like, and the covered film mainly aims at the front column, the upper edge beam and other areas. Therefore, when the vehicle body frame is coated, the vehicle body frame is fixed on a conveying platform through a limiting device to serve as a relatively static coating object, and then the vehicle film is attached to the surface of the vehicle body frame through a machine tool.
Preferably, the laminating part is specifically: carrying out dust removal and glue spraying treatment on the separated pieces subjected to the electrophoresis treatment; the bagging type turning film is spread and placed in a turning film spreading tool groove, and compressed air is introduced into the bagging type turning film; placing the sub-adhesive pieces in a bagging type turning film, positioning the sub-adhesive pieces through a positioning part at the bottom of a turning film unfolding tooling groove, sealing and vacuumizing to wrap the bagging type turning film and attach the sub-adhesive pieces; the sealing edge is cut by laser, and the sealing edge is tightly pressed by a heating roller, so that the film coating of the separate pasting piece is realized.
Wherein, because the size of the sub-pasting piece is relatively smaller, the plane shape occupies characteristics such as relatively big, and the tectorial membrane mainly ensures the pleasing to the eye of outside visible region. Therefore, the split sticking pieces are respectively coated by using special sleeved car films in a vacuum packaging mode.
Preferably, the temperature in the film turning and unfolding tooling groove is 45-60 ℃.
Preferably, the vacuum pressure in the vacuumizing treatment process is between 0.3 and 0.5 mpa.
Preferably, the vehicle body panel includes a front bumper, a rear bumper, a door, a left fender, a right fender, an engine cover, a trunk lid, and a fuel tank lid.
Preferably, the thickness of the car film is less than or equal to 0.2mm, and the car film base material is PVC or TPH.
The thickness of the automobile film is a certain value, so that the original gap size can be reduced after the film is adhered to two adjacent parts, and the influence of the thickness of the automobile film is considered when the automobile body frame and the separate-adhered parts are structurally designed. Meanwhile, the car film is slightly stretched in the attaching process, and the thicker the car film is, the more serious the stretching deformation is, so that the serious chromatic aberration is caused, the thickness of the car film is required to be controlled within 0.2mm, and the car film substrate can be PVC or TPH.
The invention also provides an automobile body processing technology, which comprises the following steps:
The method comprises the steps of manufacturing a vehicle body frame and sub-stickers by adopting a stamping process and a welding process;
Respectively carrying out electrophoresis treatment on the vehicle body frame and the sub-pasting pieces;
the method for coating the automobile body is adopted to respectively coat the automobile body frame and the sub-pasting piece;
and assembling the sub-mounting piece and the vehicle body frame.
According to the technical means, after the vehicle body frame subjected to electrophoresis treatment and the separated pasting pieces are respectively coated, assembly is carried out, so that the technical difficulty of coating is effectively reduced. The existing coating process is to assemble the vehicle body frame and the sub-pasting parts and then coat the vehicle body frame and the sub-pasting parts, and gaps between adjacent parts are smaller in the assembled state, so that the difficulty of a film coating technology is greatly increased.
Preferably, the electrophoresis treatment comprises degreasing, surface conditioning, phosphating, electrophoresis and baking processes.
The invention has the beneficial effects that:
According to the method for coating the automobile body and the processing technology of the automobile body, disclosed by the invention, the coating of the whole automobile body of the automobile is realized by respectively coating the electrophoretically treated automobile body frame and the separated sticking pieces, the existing coating technology is replaced, the method has the advantages of greenness, small-batch personalized customization, low cost, strong flexibility and the like, meanwhile, the method has the advantages of easiness in repairing after damage and the like, and the problems of high energy consumption, heavy pollution and insufficient individuation in the existing coating technology are solved.
Compared with the existing coating process, the coating method of the automobile body disclosed by the invention has the following specific advantages: 1. the energy consumption and pollution of the coating workshop are large, and after the coating method is improved, the original coating workshop only keeps the electrophoresis stage so as to meet the anticorrosive function of the whole vehicle, thereby effectively reducing the coating cost and realizing low-carbon manufacture; 2. the new car film is more convenient to switch than the existing coating process, and the personalized customization in a larger range can be realized; 3. the paint is not required to be replenished after the appearance is scraped, and the whole or partial replacement of the car film is directly carried out manually, so that the maintenance is convenient and quick; 4. the separate pasting piece and the vehicle body frame piece can be manufactured separately according to the actual process rhythm, so that the flexibility of production and manufacturing is improved, and the method has popularization and application values in the technical field of automobile manufacturing.
Drawings
FIG. 1 is a process flow diagram of a body frame film of the present invention;
FIG. 2 is a process flow diagram of a split lamination of the present invention;
FIG. 3 is a flow chart of the automotive body machining process of the present invention;
fig. 4 is a shop layout of the automotive body processing process of the present invention.
Detailed Description
Further advantages and effects of the present invention will become readily apparent to those skilled in the art from the disclosure herein, by referring to the accompanying drawings and the preferred embodiments. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be understood that the preferred embodiments are presented by way of illustration only and not by way of limitation.
It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present invention by way of illustration, and only the components related to the present invention are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
Example 1
A method for coating an automobile body comprises the steps of coating a body frame after electrophoresis treatment and a separate sticking piece separately, and specifically comprises the following steps:
as shown in fig. 1, the steps of the body frame coating are:
S1, preparing a frame: conveying the vehicle body frame subjected to electrophoresis to a laminating workshop through a hoisting line, and placing the vehicle body frame on a conveying platform of a film laminating production line; meanwhile, dust or drift of the vehicle body frame is cleaned in a compressed air mode, so that the bonding effect of a subsequent vehicle film and the vehicle body frame is guaranteed;
s2, accurate positioning: the transportation platform carries the car body frame to be transported forward, and the transportation platform and the car body frame are accurately positioned to the laminating station through a limiting device of the production line;
s3, preparing a car film: the method comprises the steps that a car film required by film coating of a car body frame is stored in a roll shape, pulled out by a required length through a pulling device and laid on a shearing platform in a flat mode, the colored front surface of the car film faces upwards, the colored back surface of the car film faces downwards, and laser cutting equipment accurately cuts the car film according to the required shape and size of the film;
S4, film taking by the tool: the tooling for adsorbing the car film is loaded on the manipulator, the tooling for adsorbing the car film adsorbs the edge position of the front face of the car film in a vacuum adsorption mode, and the tooling after adsorbing the car film slightly extends to the periphery so as to ensure the flatness of the surface of the car film;
S5, film turning and gluing: the glue spraying robot sprays glue on the car film adsorbed by the tool for adsorbing the car film, and the front surface of the car film is adsorbed by the tool for adsorbing the car film, so that the attached surface (namely the back surface of the car film) of the car film is free from any shielding, and uniform and global glue spraying treatment can be performed;
s6, attaching a vehicle model: the tooling for adsorbing the car film aims at the outer surface of the car body frame to be adhered with the car film to adhere the car film to the appointed position on the car body frame;
S7, flattening the shape-following roller once: the following roller moves to the car film area and realizes the following of the shape of the car body frame by utilizing the non-stressed soft property of the following roller, and then the following roller vibrates at a high speed, so that the roller moves in the stressed and non-stressed changes and keeps following with the car body frame, and the preliminary spreading of the car film is realized; wherein, the shape-following roller is made of foam made of non-Newtonian fluid, and the material becomes hard when being pressed and very soft when not being pressed;
s8, secondarily flattening the conformal roller: s7, the following roller is adopted to execute again, and a hot air blower beside the following roller is started at the time, so that the turning film has a certain temperature in the rolling process, the adsorption effect of the turning film and the surface of the vehicle body frame is improved, and the turning film is leveled;
s9, appearance inspection: and manually checking whether the car membrane on the surface of the car body frame has bubbles, and if so, manually scraping and repairing.
As shown in fig. 2, the step of laminating the separate pieces is as follows:
S1, preparing a workpiece: conveying the sub-patch to a laminating workshop, grabbing the sub-patch by a machine tool, and cleaning dust or drift on the sub-patch by compressed air to ensure the bonding effect of the subsequent vehicle film and the sub-patch; the sub-attaching piece comprises a car body panel, a front anti-collision beam, a rear anti-collision beam and a door handle;
s2, spraying glue on the workpiece: the glue spraying robot is matched with the grabbing tool, and glue spraying treatment is carried out on the front side and the back side of the split sticking piece;
S3, preparing a car film: opening the bagging type car film support into a car film unfolding tool groove, blowing compressed air into the bagging type car film aiming at the opening of the opened bagging type car film to enable the bagging type car film to be completely attached to the inner side wall of the car film unfolding tool groove, and simultaneously heating the car film unfolding tool groove to enable the temperature in the groove to be 45-60 ℃ so as to increase the attaching effect;
S4, bagging the workpiece: the robot places the sub-adhesive pieces in the pocket type car film in the car film unfolding tooling groove, and the bottom of the car film unfolding tooling groove is provided with the positioning device, so that the sub-adhesive pieces can be vertically arranged in the car film unfolding tooling groove;
s5, packaging the vehicle film: the packaging machine seals the open bagging type car film and vacuumizes, and the vacuum pressure is controlled to be between 0.3 and 0.5mpa, so that the bagging type car film tightly wraps and adheres the sub-adhesion pieces together; wherein the packaging opening is positioned at the outer side of the sub-pasting piece;
S6, turning a film cutting edge: cutting off the sealing edge by adopting a laser cutting mode;
S7, sealing and rolling: the back of the sub-pasting piece adopts a heating roller to compress the sealing position of the pocket type car film; the back of the sub-patch is a part which is invisible to a consumer and has no attractive requirement after the sub-patch is assembled on the whole vehicle, and the sealing part is required to be pressed on the back;
S8, appearance inspection: and manually checking whether the car film on the surface of the sub-patch has bubbles, and if so, manually scraping and repairing.
Example 2
As shown in fig. 3 and 4, an automotive body processing process includes the steps of:
S1, stamping and welding: producing an automobile body frame and sub-stickers in a stamping workshop according to a conventional stamping process; welding the automobile body frame and the sub-pasting pieces in a welding workshop in a conventional welding mode; the anti-collision beam, the rear anti-collision beam and the door handle do not need to be stamped and welded;
S2, electrophoresis: in an electrophoresis workshop, the welded body frame enters a body part electrophoresis section and is subjected to degreasing, surface conditioning, phosphating, electrophoresis and baking process treatment; the welded sub-stickers enter a sub-sticker electrophoresis section to be subjected to degreasing, surface conditioning, phosphating, electrophoresis and baking process treatment; in the electrophoresis workshop, the vehicle body frame and the sub-pasting pieces are not matched, are produced independently, have no one-to-one correspondence, wait for entering the laminating workshop in the transportation main line, and can be stored according to the capacity arrangement;
S3, coating the body frame and the sub-adhesive pieces by adopting the automobile body coating method in the embodiment 1;
S4, after the film coating of the vehicle body frame is completed, the vehicle body frame is transported to a final assembly station by a final assembly main transfer belt, and after the film coating of the sub-pasting pieces is completed, the vehicle body frame and the sub-pasting pieces are assembled by being transported to corresponding installation positions of a final assembly line through factory logistics. Compared with the traditional assembly, the assembly of the vehicle body frame and the sub-patch is carried out at the moment, so that the installation stations of the vehicle body frame and the sub-patch are required to be increased.
Compared with the existing processing technology adopting coating, the processing technology of the automobile body in the embodiment is characterized in that:
The conventional production mode of the whole vehicle mass production and manufacturing four processes based on spraying is stamping, welding, coating and final assembly. As shown in fig. 3 and 4, in this embodiment, after the coating is used instead of the painting to realize the appearance color of the vehicle, the original production mode is no longer applicable, and the adjustment needs to be made on the basis of the original production mode. The new manufacturing modes are: punching, welding, anti-corrosion treatment, film coating production line and final assembly (outer ornament assembly), wherein the punching and welding are the same.
And (3) antiseptic treatment: in the embodiment, on the spraying content, a coating workshop does not carry out intermediate coating, a primary color layer and a varnish layer any more, and only electrophoretic treatment is required to be reserved, so that the requirement of an anti-corrosion function is met. In this embodiment, in the spraying manner, the vehicle body frame and the sub-mount are not sprayed after being assembled, but a collinear and separate electrophoresis manner is adopted.
And (3) laminating a workshop: as one of the core processes of automobile manufacturing, the coating film needs to be managed individually for quality, personnel, equipment, energy sources, and the like, so that an independent coating film shop is established. The body frame and the sub-stickers are finished with the appearance color in a laminating workshop. The efficiency of tectorial membrane workshop is lower in whole car assembly and antiseptic treatment efficiency compared, so according to the production beat, can provide a plurality of tectorial membrane lines and carry out the productivity and match. The film laminating workshop comprises two sections of a vehicle body part film (namely a vehicle body frame film) and a separate piece film.
And (3) final assembly workshop: after the film coating is completed on the vehicle body frame, the vehicle body frame is transported to a final assembly station by a final assembly main traditional belt, and is transported to a corresponding installation position of a final assembly line by factory logistics after film coating is carried out by separate pasting pieces. The mounting stations for the body frames and the sub-mounts are increased as compared to conventional assemblies when the body frames and the sub-mounts are not assembled.
The system comprises a main conveying line, a sub-conveying line, a film covering section, a main traditional line, a main assembly workshop and a film covering workshop, wherein the main conveying line is used for conveying the vehicle body frame to the sub-conveying line of the idle vehicle body film covering section of the film covering workshop, and the main traditional line is returned to the main assembly workshop to continue conveying the vehicle body frame to the main assembly workshop after the film covering section of the sub-conveying line is used for covering films; the sub-adhesive parts are shipped by a warehouse and conveyed to corresponding sub-adhesive part laminating stations of a laminating workshop by a workshop logistics vehicle, and after the lamination is completed, the sub-adhesive parts are sent to corresponding mounting stations of a final assembly workshop by the workshop logistics vehicle, and can be transported to the warehouse for standby according to the capacity.
The vehicle body frame enters a main line installation platform of a final assembly workshop, and the sub-pasting pieces are manually installed to assemble a complete white vehicle body; the original assembly process needs to take the vehicle door off the vehicle body to assemble the vehicle door system, and the vehicle door system is directly split-assembled based on the film coating process of the invention, because the vehicle door is not installed at the moment, the step of taking the vehicle door off is omitted. The rest of the general assembly flow is the same as the conventional flow.
The above embodiments are merely preferred embodiments for fully explaining the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present invention, and are intended to be within the scope of the present invention.
Claims (9)
1. A method for coating an automobile body, characterized in that the method separately coats an electrophoresis-treated automobile body frame and a separated patch, and comprises the following steps:
Film coating of a vehicle body frame:
dedusting and positioning the vehicle body frame subjected to the electrophoresis treatment;
cutting the car film according to the shape and the size of the film of the car body frame;
adsorbing the front surface of the car film, and spraying glue to the back surface of the car film;
The vehicle film is aligned to the outer surface of the vehicle body frame to be adhered with the film for adhering treatment, and a follower roller is adopted for flattening, so that the film coating of the vehicle body frame is realized;
laminating the adhesive parts:
Grabbing the split stickers subjected to electrophoresis treatment by using a machine tool, removing dust, and spraying glue on the split stickers by matching a glue spraying robot with the grabbing tool; the sub-attaching piece comprises a car body panel, a front anti-collision beam, a rear anti-collision beam and a door handle;
Opening the pocket type car membrane support to the inside of a car membrane unfolding tool groove, introducing compressed air into the pocket type car membrane, placing the sub-pasting piece in the pocket type car membrane, fixing the sub-pasting piece by a positioning device arranged at the bottom of the car membrane unfolding tool groove, sealing the open pocket type car membrane by a packaging machine, vacuumizing, cutting off sealing edges in a laser cutting mode, sealing and compacting the pocket type car membrane by a heating roller on the back of the sub-pasting piece, and realizing film covering of the sub-pasting piece.
2. The method of claim 1, wherein the follower roller flattening comprises a first follower roller flattening and a second follower roller flattening;
The following roller is flattened at one time specifically: the following roller is moved to be attached to the outer surface of the vehicle body frame, and then vibrates at a high speed, so that the roller is changed between stressed and unstressed, and the roller moves to keep following with the vehicle body frame, and the preliminary spreading of the vehicle body frame film is realized;
The secondary flattening of the follower roller is specifically as follows: the follower roller with temperature is moved to be attached to the outer surface of the vehicle body frame, and then high-speed vibration is carried out, so that the roller is changed between stressed and unstressed, and the follower roller is moved to keep a shape following the vehicle body frame, and the adsorption force of the vehicle body frame and the vehicle film is increased;
the follower roller is made of non-Newtonian fluid materials.
3. The automotive body ply-coating method according to claim 2, characterized in that the body frame ply-coating is specifically: the vehicle body frame subjected to the electrophoresis treatment is subjected to dust removal treatment by adopting compressed air, and the vehicle body frame is positioned by a limiting device; cutting the car film according to the shape and the size of the film of the car body frame; adsorbing the edge part of the front surface of the car film through a tool for adsorbing the car film, and spraying glue on the back surface of the car film; and (3) aligning the vehicle film with the outer surface of the vehicle body frame to be film-adhered to carry out attaching treatment, and adopting a follower roller to carry out twice flattening to realize film coating of the vehicle body frame.
4. The automotive body film coating method according to claim 1, wherein the temperature in the film spreading tool groove is 45-60 ℃.
5. The method for coating an automotive body according to claim 1, wherein the vacuum pressure in the vacuuming process is 0.3 to 0.5 mpa.
6. The automotive body ply-coating method of claim 1, wherein the body panel comprises a front bumper, a rear bumper, a door, a left fender, a right fender, a hood, a trunk lid, and a fuel tank lid.
7. The method for coating the automobile body according to claim 1, wherein the thickness of the automobile film is less than or equal to 0.2mm, and the automobile film base material is PVC or TPH.
8. The automobile body processing technology is characterized by comprising the following steps of:
The method comprises the steps of manufacturing a vehicle body frame and sub-stickers by adopting a stamping process and a welding process;
Respectively carrying out electrophoresis treatment on the vehicle body frame and the sub-pasting pieces;
coating the body frame and the separate pieces by the automotive body coating method according to any one of claims 1 to 6, respectively;
and assembling the sub-mounting piece and the vehicle body frame.
9. The automotive body finish of claim 8, wherein the electrophoretic treatment comprises degreasing, surfacing, phosphating, electrophoresis, and baking processes.
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