CN109664850B - Integrated double-color automobile bumper and manufacturing method thereof - Google Patents
Integrated double-color automobile bumper and manufacturing method thereof Download PDFInfo
- Publication number
- CN109664850B CN109664850B CN201910111937.9A CN201910111937A CN109664850B CN 109664850 B CN109664850 B CN 109664850B CN 201910111937 A CN201910111937 A CN 201910111937A CN 109664850 B CN109664850 B CN 109664850B
- Authority
- CN
- China
- Prior art keywords
- bumper
- mold
- color
- product
- double
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 47
- 238000000926 separation method Methods 0.000 claims abstract description 47
- 238000005516 engineering process Methods 0.000 claims abstract description 14
- 238000011161 development Methods 0.000 claims abstract description 13
- 238000000465 moulding Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 24
- 238000005507 spraying Methods 0.000 claims description 24
- 238000001746 injection moulding Methods 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 19
- 238000013461 design Methods 0.000 claims description 18
- 230000000694 effects Effects 0.000 claims description 10
- 239000010985 leather Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 7
- 238000010892 electric spark Methods 0.000 claims description 3
- 238000012805 post-processing Methods 0.000 claims description 3
- 238000005496 tempering Methods 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 2
- 238000010422 painting Methods 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 claims description 2
- 230000002829 reductive effect Effects 0.000 abstract description 5
- 239000002390 adhesive tape Substances 0.000 description 9
- 239000003973 paint Substances 0.000 description 9
- 230000013011 mating Effects 0.000 description 6
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000009713 electroplating Methods 0.000 description 4
- 230000036961 partial effect Effects 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 210000003141 lower extremity Anatomy 0.000 description 3
- 230000000873 masking effect Effects 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 210000001364 upper extremity Anatomy 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000002147 killing effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000036548 skin texture Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 235000019640 taste Nutrition 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
-
- 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
- B29C45/26—Moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/24—Arrangements for mounting bumpers on vehicles
-
- 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
- B29L2031/3044—Bumpers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides an integrated double-color automobile bumper and a manufacturing method thereof, wherein the bumper comprises a front bumper and a rear bumper which are injection-molded, and the integrated double-color automobile bumper is characterized in that an upper bumper body and a lower bumper body are arranged on the double-color automobile bumper, the lower bumper body is connected below the upper bumper body, the lower bumper body is a dermatoglyph part, and meanwhile, color separation grooves are formed in the middles of the upper bumper body and the lower bumper body in a transitional connection mode. The strength of the integrated bumper can be enhanced, the development cost of a die is reduced, the equipment investment is reduced, the equipment utilization rate is improved, and the one-time molding technology without assembling the double-color automobile bumper is realized.
Description
Technical Field
The invention belongs to the technical field of design, processing and manufacturing of automobile parts, and particularly relates to an integrated double-color automobile bumper and a manufacturing method thereof.
Background
With the continuous development of social productivity and the vigorous development of production and manufacturing industry, production technologies in all aspects are matured day by day, and under the condition that the living standard of people is greatly improved, an automobile becomes an indispensable vehicle for short trip in people and is rapidly popularized to the life of the masses. In recent years, the domestic automobile market also presents a blowout situation, various automobiles are all over the world, meanwhile, the requirements of consumers on the product quality of the automobiles are higher and higher, and various consumer tastes are more and more diversified, so that a two-color automobile, such as a high-grade automobile type of a Benz Mibach double-tone classic car, appears. The bumper is required to be in double colors, the existing double-color bumper is difficult to realize due to the requirements of the installation and production molds of the bumper, and the double-color bumper only has a conceptual design stage or a theoretical design stage and is not actually produced. The two-color automobile bumper in the experiment consists of an upper part and a lower part, namely, the upper body and the lower body are assembled together through a buckle or a screw, so that the split type bumper is easy to collide and damage and scatter in the driving process of an automobile, namely, the mechanical strength is insufficient; furthermore, during manufacturing, two or more sets of plastic molds need to be developed, two or more machine production devices need to be used in the production process, and the plastic molds need to be assembled through manual multiple processes after the upper body is painted, so that labor and time are wasted. Therefore, the existing manufacturing of the double-color automobile bumper has the problems of high investment, low utilization rate and high production cost of products, and the quantitative mass production is not realized all the time.
Disclosure of Invention
In order to solve the above problems, the present inventors have made many studies and designs to provide an integrated two-color automobile bumper and a method of manufacturing the same.
According to a first aspect of the invention, an integrated double-color automobile bumper is provided, which comprises an injection-molded front bumper and a rear bumper, wherein the double-color automobile bumper is provided with an upper bumper body and a lower bumper body, the lower bumper body is connected to the lower portion of the upper bumper body, the lower bumper body is a dermatoglyph, and a color separation groove is formed between the upper bumper body and the lower bumper body in a transitional connection mode. Wherein the upper body and the lower body are designed into an integral structure; the integrated structure has no buckle clamping connection and no screw connection.
Preferably, the integrated structure is produced by simultaneously producing the upper bumper body and the lower bumper body through a set of molds, and the set of molds only needs to be produced on one injection molding machine.
Preferably, a color separation groove between the upper bumper body and the lower bumper body is used for the next two-color spraying, and the width of the color separation groove is generally 1mm-10mm, preferably 3 mm.
More preferably, the double-color spraying is realized by spraying the paint color of the automobile body on the upper body by using a high-temperature resistant shielding film through a color separation groove, and the characteristic of the dermatoglyph is retained by shielding the lower half part, so that the one-time forming of the double-color automobile bumper is finally realized.
Further, the upper body left side wall 13 is lapped with a rear left side fender, a rear left side wheel arch and a rear left side mudguard of a vehicle body metal plate; the upper body right side wall 14 is lapped with a vehicle body metal plate rear right side fender, a rear right side wheel arch and a rear right side mudguard; left tail lamp fitting surface 15 is a fitting surface area of the left tail lamp lower end support; right tail lamp mating surface 16 is a mating surface area supported by the lower end of the right tail lamp; the radar holes 10 (or camera holes) are through holes for mounting a reversing radar (or a camera), are linearly and uniformly distributed on the surface of the upper body, and belong to hole positions realized by a post-processing technology; the screw hole 17 is a screw through hole for fixing the rear bumper body to the vehicle body metal plate.
Preferably, the left bracket fixing rib 18 is correspondingly clamped on the left mounting bracket; the right bracket fixing rib 19 is correspondingly clamped on the right mounting bracket; the left mounting bracket of the rear bumper is fixed on the left vehicle body of the metal plate, and the right mounting bracket of the rear bumper is fixed on the right vehicle body of the metal plate; the left fender fixing rib 20 is fixed with the rear left fender through a screw, and the right fender fixing rib 21 is fixed with the rear right fender through a screw; the middle clamping rib 6 is clamped to a connecting hole in the middle of a metal plate of the automobile body and used for supporting the rear bumper body.
According to a second aspect of the present invention, there is provided a method of manufacturing the integrated two-color automobile bumper described above, comprising the steps of:
step one, product design: designing specific structures and sizes of all parts forming the bumper;
step two, developing a mould: designing a front mold and a rear mold of the mold, and reflecting a back related structure of the bumper on the rear mold of the mold; the front mold of the mold is embodied with a front relevant structure of the bumper; the mould positioning ring is a part where the front mould and the rear mould of the mould are butted with a nozzle of an injection molding machine;
thirdly, injection molding: the front mold and the rear mold are closed to form a hollow product-shaped cavity, the plasticized rubber material is pressed into the product-shaped cavity through the mold positioning ring and the runner, and the product-shaped cavity is completely filled and then cooled to obtain a required product; wherein, the rear mould of the mould plays the roles of forming the structure of the product and ejecting the product after forming; the front mold of the mold plays a role in forming the front structure of the product to form the appearance surface of the surface A of the product; the mold back mold and the mold front mold are completely matched and sealed through parting surfaces to form a closed cavity space, and the matching clearance between the mold back mold and the mold front mold is zero clearance.
Further, in the third step, the mold positioning ring is fixed on the cavity wall of the front mold of the mold and is also a joint point connecting the injection molding machine and the mold cavity, the rubber material plasticized by the injection molding machine enters the closed cavity formed by the rear mold of the mold and the front mold of the mold through the position, and finally the required product is formed by cooling;
or in the second step, after the design of the die is finished, ordering rough blanks according to 3D data, then respectively carrying out rough opening, tempering and waterway processing on the A plate, the B plate and sub-parts, then carrying out CNC semi-finishing and finishing on the cavity, milling a large core cap at a high speed, then carrying out electric spark discharge on the core and the cavity in part, and then carrying out large inclined top on a rear bumper rear die, matching the traveling position and integrally flying the front and rear die combined die parting surfaces.
By adopting the integrated double-color automobile bumper and the manufacturing method thereof, the strength of the integrated bumper can be enhanced, the development cost of a mold is reduced, the equipment investment is reduced, the equipment utilization rate is improved, the one-time molding technology without assembly of the double-color automobile bumper is realized, the production and manufacturing technology of the double-color automobile bumper is innovated, the production cost is effectively controlled, the enterprise benefit is improved, and the core competitiveness of an enterprise is finally improved. In addition, the invention has simple and stable structure and reasonable design, and is worthy of wide popularization and application.
Drawings
FIG. 1 is a front elevational view, in schematic form, of an integrated bi-color automotive bumper according to the present invention;
FIG. 2 is a top plan view of an integrated bi-color automotive bumper according to the present invention;
FIG. 3 is a left side view of an integrated bi-color automotive bumper according to the present invention;
FIG. 4 is a front elevational view of the upper body of the bumper shown in FIG. 1;
FIG. 5 is a rear elevational view of the upper body of the bumper shown in FIG. 1;
FIG. 6 is a front elevational view of the bumper lower body illustrated in FIG. 1;
FIG. 7 is a rear elevational view of the bumper underbody illustrated in FIG. 1;
FIG. 8 is an enlarged partial view of the rear bumper body dichroic trough;
FIG. 9 is a schematic view of the structure of the color separation tank shown in FIG. 8;
FIG. 10 is a schematic view of the rear bumper mold as a whole;
FIG. 11 is a schematic view of a rear bumper rear mold;
fig. 12 is a schematic view of a rear bumper front mold.
The reference numbers in the drawings are as follows:
1-upper body; 2-lower body; 3-a dichroic trough (3-bumper up/down body dichroic trough); 4-masking gummed paper; 5-high temperature resistant film; 6-clamping the rib in the middle; 7-a bottom plate mounting hole; 8-clamping ribs on the bracket; 9-a tail light support surface; 10-radar hole; 11-wheel arch clamping surface; 12-electroplating bright strip clamping and positioning; 13-upper body left side wall; 14-upper body right side wall; 15-left taillight mating surface; 16-right tail lamp mating surface; 10-radar hole; 17-a screw hole; 18-left side bracket fixing rib; 19-right side bracket fixing ribs; 20-left fender fixing rib; 21-right fender fixing ribs; 6-clamping the rib in the middle; 22-lower body upper edge; 23-lower guard board; 24-clamping; 25-left fog lamp hole; 26-right fog lamp hole; 27-left mudguard fixing ribs; 28-right fender fixing ribs; 29-bottom plate fixing ribs; 30-back mould; 31-front mould; 32-a positioning ring; 33-a base plate; 34-big cap; 35-large pitched roof; 36-a guide post; 37-ejector plate; 38-a bottom plate; 39-a cavity; 40-guide groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Additionally, the scope of the present invention should not be limited to the particular structures or components or the particular parameters described below.
The invention provides an integrated double-color automobile bumper and a manufacturing method thereof, which mainly comprise modules of early product design, mold development, double-color spraying process and the like. The invention also discloses a concrete working method of the technology, the technology directly combines and designs the front ends of the upper body and the lower body of the bumper into a whole when designing, then realizes that a set of die simultaneously produces two functional modules of the upper body and the lower body in the die development process, and finally realizes the one-time molding of the double-color automobile bumper product by using a shielding spraying method. The manufacturing technology of the double-color automobile bumper can realize the enhancement of the strength of the integrated bumper, simultaneously reduces the development cost of a mold, reduces the equipment investment and improves the equipment utilization rate, realizes that the double-color automobile bumper does not need to be assembled into a one-time forming technology, innovating the production and manufacturing technology of the double-color automobile bumper, effectively controls the production cost, improves the enterprise benefit and finally improves the core competitiveness of an enterprise.
The invention relates to an integrated double-color automobile bumper which is particularly suitable for an injection molding bumper for a passenger vehicle. Preferably, the upper body and the lower body of the double-color automobile bumper are designed into an integral structure during product design, and the color separation groove can obviously distinguish the upper body and the lower body of the bumper. Furthermore, the integrated structure does not have buckle joint, does not have screw connection. The integrated structure is characterized in that the upper bumper body and the lower bumper body are produced simultaneously through one set of die, and the one set of die is produced on one injection molding machine.
A color separation groove is formed in a transitional connection area of the upper bumper body and the lower bumper body, so that subsequent double-color spraying is facilitated, namely the color separation groove between the upper bumper body and the lower bumper body is used for the next double-color spraying, and the width of the color separation groove is generally 1-10 mm, preferably 3 mm; the widths of the color separation groove areas of the upper bumper body and the lower bumper body are preferably 2mm, so that subsequent shielding operation is facilitated. The double-color spraying is to realize the purpose that the upper body is sprayed with the paint color of the automobile body by utilizing the characteristic of a color separation groove and adopting a high-temperature resistant shielding film, the lower half part is shielded and retains the characteristic of dermatoglyph, and finally, the one-time forming of the double-color automobile bumper is realized.
The key point of the invention is that the front ends of the upper body and the lower body of the bumper are directly combined and designed into a whole when being designed, then a set of die is realized in the die development process to simultaneously produce two functional modules of the upper body and the lower body, and then the one-time molding of the double-color automobile bumper product is finally realized by using a shielding spraying method. Generally, the upper body is coated with the color of the car body, the lower body is a leather pattern piece, and the upper bumper body and the lower bumper body are transitionally connected together through color separation grooves. As a support for the technical scheme, the upper body of the double-color automobile bumper is automatically sprayed by a mechanical arm, and the skin texture of the lower body is manufactured by the characteristic effect in the development of a die. Furthermore, when the two-color automobile bumper is finally formed in one step, a high-temperature resistant shielding auxiliary material (generally resistant to 90 ℃) needs to be manually adhered along the color separation grooves.
The integrated two-color automobile bumper and the manufacturing method thereof will be further explained with reference to the drawings.
1-3, FIG. 1 is a schematic front view of an integrated bi-color automotive bumper according to the present invention; FIG. 2 is a top plan view of an integrated bi-color automotive bumper according to the present invention; FIG. 3 is a left side view of an integrated bi-color automotive bumper according to the present invention. The double-colored car bumper is located and plays the working of plastics of decorating the cushioning effect on the car panel beating automobile body, and double-colored car bumper includes body 1, lower body 2, color separation groove 3, follow-up technology production with shielding adhesive tape 4, high temperature resistant film 5. Body 1 lower limb and colour separation groove 3 upper limb are connected on the bumper, the lower limb of colour separation groove 3 is connected with the upper limb of body 2 down, go up body 1 with body 2 formula structure as an organic whole down can effectual assurance the intensity of double-colored car bumper. The shielding adhesive tape 4 plays a role in bonding a high-temperature-resistant film and a bumper body, the high-temperature-resistant film is used for shielding the bumper lower body 2, the bumper lower body 2 is prevented from being sprayed with paint, the shielding adhesive tape 4 is closely adhered to the color separation groove 3 along the upper edge or the lower edge of the color separation groove 3 in the paint spraying operation, one end of the high-temperature-resistant film 5 is adhered to the shielding adhesive tape, the other end of the high-temperature-resistant film 5 covers the surface of the bumper lower body 2, the paint is prevented from splashing to the bumper lower body 2 in the paint spraying process, and the shielding adhesive tape 4 is thoroughly cleaned from the adhesion surface of the color separation groove 3 after the paint spraying operation is completed to complete the operation.
The spraying generally plays the effect of decorating the automobile body side wall with body on the bumper of automobile body concolorous, and body 2 generally is the dermatoglyph spare under the bumper, and the front mould surface is handled through the dermatoglyph during mould preparation, and the production of moulding plastics forms the dermatoglyph spare, plays the effect of protection automobile body inner structure, and color separation groove 3 is body 1 and bumper physical boundary of body 2 down on the bumper mainly is the follow-up industrial production operation of convenience. The middle clamping rib position 6 is a contact part for fixedly clamping the middle part of the bumper and a metal plate connecting hole of the vehicle body, and plays a role in positioning and bearing the self weight of part of the bumper; the bottom plate mounting hole 7 is used for connecting and positioning the bumper lower body and the vehicle body chassis part; the bracket mounting rib positions 8 are symmetrically distributed left and right and mainly play roles in positioning and connecting the bumper and the vehicle body, controlling and adjusting the gap and the surface difference of the overlapping position of the bumper and the vehicle body and simultaneously playing roles in bearing the self weight of part of the bumper; the tail light support surface 9 serves to support part of the weight of the tail light and to position it.
As shown in the left side view of the automobile double-color automobile bumper shown in fig. 3, the upper body 1 of the bumper is sprayed with the same color of the automobile body and plays a role in decorating the side wall of the automobile body; the bumper lower body 2 is a leather pattern piece, the surface of a front die is subjected to leather pattern treatment during die manufacturing, and the leather pattern piece is formed through injection molding production to play a role in protecting a vehicle body; the radar holes 10 are uniformly distributed on the bumper body and play a role in mounting and fixing the radar bracket; the wheel arch clamping surfaces 11 are bilaterally symmetrical and play a role in fixing the wheel arch, positioning and controlling the gap and the surface difference between the wheel arch and the bumper body; the physical boundary of the upper bumper body 1 and the lower bumper body 2 of the color separation tank 3 is mainly convenient for subsequent industrial production operation; the electroplating bright strip clamping rib positions 12 are distributed in bilateral symmetry and play a role in installing and fixing the electroplating bright strips. Preferably, in this embodiment, the bumper upper body 1 and the bumper lower body 2 need to be designed into an integrated structure when the product is designed, the bumper upper body 1 and the bumper lower body 2 are transitionally connected into an integrated body through the dichroic trough 3, and the integrated structure is designed so as to ensure the final strength of the product. The color separation grooves are explained in detail in the following fig. 6 and fig. 7, and the product design is explained in detail in the following fig. 4, 5, 6, and 7, respectively.
4-8, FIG. 4 is a front elevational view of the upper body of the bumper shown in FIG. 1; FIG. 5 is a rear elevational view of the upper body of the bumper shown in FIG. 1; FIG. 6 is a front elevational view of the bumper lower body illustrated in FIG. 1; FIG. 7 is a rear elevational view of the bumper underbody illustrated in FIG. 1; fig. 8 is a partial enlarged view of the rear bumper body color separation groove.
Taking a rear bumper of an automobile as an example, a rear bumper body generally comprises an upper body (a front surface of the upper body in fig. 4 and a back surface of the upper body in fig. 5) and a lower body (a front surface of the lower body in fig. 6 and a back surface of the lower body in fig. 7), wherein the upper body generally has a decorative effect with a painted part of the same color as an automobile body, and the lower body generally has a dermatoglyph part with a protective and decorative effect. As shown in the front of the upper body of the bumper in fig. 4, the left side wall 13 of the upper body is lapped with the metal plate rear left fender, the rear left wheel arch and the rear left mudguard of the vehicle body; the upper body right side wall 14 is lapped with a vehicle body metal plate rear right side fender, a rear right side wheel arch and a rear right side mudguard; left tail lamp fitting surface 15 is a fitting surface area of the left tail lamp lower end support; right tail lamp mating surface 16 is a mating surface area supported by the lower end of the right tail lamp; the radar holes 10 (or camera holes) are through holes for mounting a reversing radar (or a camera), are generally linearly and uniformly distributed on the surface of the upper body, and belong to hole positions realized by a post-processing technology; the screw hole 17 is a screw through hole for fixing the rear bumper body to the vehicle body metal plate.
As shown in fig. 5, the left bracket fixing rib 18 is correspondingly clamped on the left mounting bracket; the right bracket fixing rib 19 is correspondingly clamped on the right mounting bracket; the left mounting bracket of the rear bumper is fixed on the left vehicle body of the metal plate, and the right mounting bracket of the rear bumper is fixed on the right vehicle body of the metal plate; the left fender fixing rib 20 is fixed with the rear left fender through a screw, and the right fender fixing rib 21 is fixed with the rear right fender through a screw; the middle clamping rib 6 is clamped to a connecting hole in the middle of a metal plate of the automobile body and used for supporting the rear bumper body.
FIG. 6 is a schematic view of the front of the bumper lower body, the lower body upper edge 22 being the area of connection with the upper body and the dichroic trough area; the lower guard plate 23 is used for preventing foreign matters, and generally adopts a plastic leather pattern member, and the lower guard plate 23 is installed on the lower body or integrally manufactured with the lower body; the electroplated part clamping positions 24 are mainly used for fixing decorative electroplating strips of the rear bumper, and the electroplated part clamping positions 24 are arranged between the left fog lamp and the right fog lamp and the upper edge 22 of the lower body; the left fog lamp mounting hole 25 and the right fog lamp mounting hole 26 are used for fixing the left fog lamp and the right fog lamp of the rear bumper.
As shown in the lower body back view of fig. 7, the left fender fixing rib 27 is used for fixing the left fender of the rear wheel, and the right fender fixing rib 28 is used for fixing the right fender of the rear wheel; the bottom plate fixing ribs 29 are used for fixing the lower body lower guard plate.
As shown in fig. 8, a partial enlarged view of an integrated rear bumper color separation groove, after the upper body and the lower body of the rear bumper are integrated, a significant distinguishing boundary is required for the color separation groove of the butt joint region, which is generally set to be 1mm to 3mm, preferably about 2mm, to distinguish the upper body from the lower body, and the feasibility of the dermatoglyph surface treatment process of the lower body is realized in consideration of the painting of the upper body and the later period; the depth of the color separation grooves is generally set to 1mm to 3mm, preferably about 2 mm.
As shown in fig. 9, fig. 9 is a schematic structural diagram of the color separation groove shown in fig. 8, the upper body 1 is generally a painted vehicle body with the same color, the lower body 2 is generally a leather pattern piece, the leather pattern on the surface of the front mold of the mold is processed and injection molded to obtain the lower body 2 during the early-stage mold development, the color separation groove 3 is a transition area between the upper body 1 and the lower body 2, the upper edge of the color separation groove 3 is bordered by the lower edge of the upper body 1 in the whole process, and the lower edge of the color separation groove 3 is bordered by the upper edge of the lower body 2 in the whole process. The dichroic trough 3 is generally a relatively flat direct current smooth transition area with a certain curvature. Referring to fig. 1, the masking tape 4 is generally masked along the upper edge or the lower edge of the color separation groove 3, so as to play a role of clearly distinguishing the upper line body in the masking spraying; the masking tape 4 is preferably made of a high temperature resistant tape. The width c of the color separation groove 3 is generally 1mm to 3mm, preferably 2.5mm, 2mm, 1.5mm, and the width c is the length from the lowermost edge of the upper body 1 to the uppermost edge of the lower body 2; the depth d of the color separation groove 3 is generally 1mm to 3mm, preferably 2.5mm, 2mm, 1.5mm, and the depth d is the length from the upper end surface of the color separation groove 3 to the upper end surface of the upper body 1 (or the length from the upper end surface of the color separation groove 3 to the upper end surface of the lower body 2), so that the upper body 1 and the lower body 2 can be physically and conveniently distinguished. From visual effect, very nature will go up body 1 and body 2 can regard as an organic whole just functional area's division and follow-up surface treatment different down, and the outward appearance effect that the double-colored technology of product realized has finally been guaranteed like this, has guaranteed the intensity of product again simultaneously, finally plays the color separation groove effect of killing two birds with one stone.
The manufacturing method of the invention specifically comprises the following steps:
step one, product design: designing specific structures and sizes of all parts forming the bumper;
step two, developing a mould: designing a front mold and a rear mold of the mold, and reflecting a back related structure of the bumper on the rear mold of the mold; the front mold of the mold is embodied with a front relevant structure of the bumper; the mould positioning ring is a part where the front mould and the rear mould of the mould are butted with a nozzle of an injection molding machine;
thirdly, injection molding: and after the product-shaped cavity is completely filled, the product is cooled to obtain the required product. Wherein, the rear mould of the mould plays the roles of forming the structure of the product and ejecting the product after forming; the front mold of the mold plays a role in forming the front structure of the product to form the appearance surface of the surface A of the product; the mold back mold and the mold front mold are completely matched and sealed through parting surfaces to form a closed cavity space, and the matching clearance between the mold back mold and the mold front mold is zero clearance.
In the third step, the mold positioning ring 32 is fixed on the cavity wall of the front mold 31 and is also a joint point connecting the injection molding machine and the mold cavity, and the rubber material plasticized by the injection molding machine enters the closed cavity formed by the rear mold 30 and the front mold 31 through the position, and is finally cooled to form the required product.
In the second step, after the design of the die is completed, a blank is ordered according to 3D data, then roughing and tempering treatment and waterway processing are respectively carried out on a plate A (a front die of a rear bumper is a cavity shown schematically in figure 12), a plate B (a rear die of the rear bumper is a core shown schematically in figure 11) and sub-parts, then CNC (computerized numerical control) semi-finishing and finishing are carried out on the cavity, large caps of the core are milled at high speed, electric spark discharge is carried out on the core and the cavity at partial positions, then the rear die of the rear bumper is matched with a rear die such as a large inclined top and a slide position shown in figure 11, and the front die and the rear die are integrally flying on the parting surface, the whole process generally needs about 120 days to manufacture period from T0, and after the integral die assembly is finished, trial production of T0, T1, T2 … Tn and the like is arranged at the next step.
More specifically, as shown in fig. 10 to 12, fig. 10 is a schematic view of the rear bumper mold as a whole, fig. 11 is a schematic view of the rear bumper mold, and fig. 12 is a schematic view of the rear bumper front mold. As shown in fig. 10, the rear bumper mold is a mold rear mold 30, i.e., a core, on which rear-surface related structures of a product such as ejector pins, ejector blocks, lifter pins, etc. are concentrated in mold molding; the front mold 31, i.e. the cavity, represents the front relevant structure of the product in the molding of the mold, and the surface treatment requirements of the front mold are high, such as polishing, dermatoglyph and the like; the mold positioning ring 32 is a part where the mold is butted with a nozzle of an injection molding machine, the front mold 31 and the rear mold 30 form a hollow product-shaped cavity after being closed, the plasticized rubber material passes through the positioning ring 32 and then is pressed into the cavity through a runner, and the cavity is completely filled and then cooled to obtain the required product. In brief, the rear mold 30 plays a role in forming the structure of the product and ejecting the product after forming; the front mold 31 of the mold plays a role in forming the front structure of the product to form the appearance surface of the surface A of the product; the rear mold 30 and the front mold 31 are completely matched and sealed to form a closed cavity space through parting surfaces, and the theoretical matching clearance between the rear mold 30 and the front mold 31 is zero clearance. Further, after the third step, the product light plate is confirmed by the customer, and then the next dermatoglyph manufacture on the front surface of the lower body of the rear bumper is arranged. The process time of the leather grain manufacturing is divided into 1 st step of cleaning and glue spraying is 1 day, the process time of the 2 nd step of protection and fine inspection is 3 days, the process time of the texture sticking and checking of the 3 rd step is 2 days, the process time of the texture corrosion of the 4 th step is 1 day, the process time of the final inspection and cleaning is 1 day, the final leather grain processing is finished, and the surface processing of the front mold of the lower body of the rear bumper is finished.
As shown in fig. 11 of the rear bumper rear mold, the bottom plate 33 plays a role in bearing and fixing a mold core, an ejector plate, an ejector pin, a hot runner, a guide post and a large inclined top on the rear mold; the big cap 34 plays the roles of simulating the structural profile of the back surface of the product and ejecting the product; the large inclined tops 35 are symmetrically distributed left and right, so that the function of disassembling the back side structure of the product is achieved, and the function of ejecting the product after the product is molded is achieved; the guide post 36 plays a role in guiding the whole rear mould into the mould core along the guide rail of the front mould and completely inosculating with the mould core without deviation; the ejector plate 37 functions to fix all the ejector pins and ejector blocks of the rear mold. The ejector plate 37 is fixed on the bottom plate 33, the large cap 34 and the large inclined top 35 are adjacently matched to form a complete product back structural profile, the product back structural profile is connected to the ejector plate 37 through an ejector pin or an ejector rod, and the guide post 36 is fixed on the core base.
Rear bumper front mold as shown in fig. 12, the front mold bottom plate 38 is used for carrying the cavity, the cooling system and other parts; the front mold cavity 39 functions as the appearance surface structure of the A surface of the molded product; the front mold guiding groove 40, i.e., the guiding rail, serves to guide the rear bumper mold to a defined position along a correct track as shown in fig. 11, and serves to guide and position the rear bumper mold, the front mold guiding groove 40 is located on the side wall of the front mold cavity 39, the front mold cavity 39 is located on the front mold base plate 38, and the front mold base plate 38, the front mold cavity 39, the front mold guiding groove 40 and other components finally form the whole front mold module of the rear bumper mold.
According to the process requirements, the bottom plate 33 plays a role in bearing and fixing a mold core, an ejector plate, an ejector pin, a hot runner, a guide post and a large inclined top on the rear mold; the big cap 34 plays the roles of simulating the structural profile of the back surface of the product and ejecting the product; the large inclined tops 35 are distributed in a left-right symmetrical mode as shown in figure 11, play a role in disassembling the back side structure of a product and play a role in ejecting the product after the product is formed; the guide post 36 plays a role in guiding the whole rear mould into the mould core along the guide rail of the front mould and completely inosculating with the mould core without deviation; the ejector plate 37 functions to fix all the ejector pins and ejector blocks of the rear mold. The ejector plate 37 is fixed on the bottom plate 33, the large cap 34 and the large inclined top 35 are adjacently matched to form a complete product back structural profile, the product back structural profile is connected to the ejector plate 37 through an ejector pin or an ejector rod, and the guide post 36 is fixed on the core base. Rear bumper front mold as shown in fig. 12, the front mold bottom plate 38 is used for carrying the cavity, the cooling system and other parts; the front mold cavity 39 functions as the appearance surface structure of the A surface of the molded product; the front mold guiding groove 40, i.e., the guiding rail, serves to guide the rear bumper mold to a defined position along a correct track as shown in fig. 11, and serves to guide and position the rear bumper mold, the front mold guiding groove 40 is located on the side wall of the front mold cavity 39, the front mold cavity 39 is located on the front mold base plate 38, and the front mold base plate 38, the front mold cavity 39, the front mold guiding groove 40 and other components finally form the whole front mold module of the rear bumper mold.
After injection moulding's bumper, the processing of spraying paint of going on, the first step of spraying paint, body 1 is the automobile body colour that needs to be sprayed on the double-colored car bumper, adopts high temperature resistant adhesive tape 4 and high temperature resistant film 5 (high temperature resistant temperature is about 90 ℃), will high temperature resistant adhesive tape 4 along the top edge or the lower limb of color separation groove 3 paste firmly on the product completely, then will high temperature resistant film 5 the 2 surperficial complete parcels of body cover shield down the rear bumper, shown high temperature resistant adhesive tape 4 and high temperature resistant film 5 are through the die-cut shaping of cutting die, and they are the shape imitation of imitating color separation groove 3 completely, the follow-up operation of pasting of being convenient for. Above-mentioned step is accomplished the back will automatic spraying line is put into to double-colored car bumper whole go up 1 surface spraying automobile body colour of body and finally go off the production line through toasting, will after the cooling of going off the production line high temperature resistant adhesive tape 4 once only dismantles along colour separation groove 3, at this moment go up body 1 and accomplish automobile body colour spraying promptly, 2 dermatoglyph patterns of lower body also can be protected, do not have unusual this double-colored car bumper through the outward appearance inspection and once only make the shaping promptly.
In this patent technique, double-colored car bumper only needs 1 injection moulding equipment once only can accomplish the shaping in actual production, and follow-up manual assembly process that need not produce again has realized reducing equipment investment simultaneously, has improved board utilization ratio, has reduced the purpose of cost of labor, improvement enterprise productivity effect.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.
Claims (6)
1. The manufacturing method is characterized by comprising the steps of product design, mold development and two-color spraying processes in the early stage, wherein the manufacturing method directly combines and designs the front ends of an upper body and a lower body of the integrated two-color automobile bumper into a whole during design, then realizes that a set of molds simultaneously produce the upper body and the lower body of the bumper in the mold development process, and finally realizes one-time molding of the integrated two-color automobile bumper product by a shielding spraying method;
the integrated double-color automobile bumper comprises an injection-molded front bumper and a rear bumper, wherein the double-color automobile bumper is provided with an upper bumper body and a lower bumper body, the lower bumper body is connected below the upper bumper body, the lower bumper body is a dermatoglyph part, and meanwhile, color separation grooves are formed in the middle of the upper bumper body and the lower bumper body in a transitional connection mode; the upper bumper body and the lower bumper body are designed into an integral structure; the integrated double-color automobile bumper is not clamped by a buckle or connected by a screw; the integrated double-color automobile bumper is characterized in that an upper bumper body and a lower bumper body are simultaneously produced through a set of dies, and the set of dies only need to be produced on one injection molding machine; the upper body of the double-color automobile bumper is automatically sprayed by a manipulator, and the dermatoglyph of the lower body of the double-color automobile bumper is manufactured by characteristic effects in the development of a mould; the lower edge of the bumper upper body is connected with the upper edge of the color separation groove, and the lower edge of the color separation groove is connected with the upper edge of the lower body;
the manufacturing method of the integrated double-color automobile bumper comprises the following steps:
firstly, designing a product; designing the specific structure and size of each part in the bumper;
step two, developing a mould: designing a front mold and a rear mold of the mold, and reflecting a back related structure of the bumper on the rear mold of the mold; the front mold of the mold is embodied with a front relevant structure of the bumper; the mould positioning ring is a part where the front mould and the rear mould of the mould are butted with a nozzle of an injection molding machine;
thirdly, injection molding: the front mold and the rear mold are closed to form a hollow product-shaped cavity, the plasticized rubber material is pressed into the product-shaped cavity through the mold positioning ring and the runner, and the product-shaped cavity is completely filled and then cooled to obtain a required product; wherein the rear die of the die plays the roles of forming the structure of the product and ejecting the product after forming; the front mold of the mold plays a role in forming the front structure of the product to form the appearance surface of the surface A of the product; the rear mould and the front mould are completely matched and sealed through parting surfaces to form a closed cavity space, and the matching gap between the rear mould and the front mould is zero;
in the third step, the mold positioning ring is fixed on the cavity wall of the front mold of the mold and is also a joint point for connecting the injection molding machine and the mold cavity, and the rubber material plasticized by the injection molding machine enters the closed cavity formed by the rear mold of the mold and the front mold of the mold through the position, and is finally cooled to form the required product;
or in the second step, after the design of the die is finished, ordering rough blanks according to 3D data, then respectively carrying out rough opening, tempering and waterway processing on the A plate, the B plate and sub-parts, then carrying out CNC semi-finishing and finishing on the cavity, milling a large core cap at a high speed, then carrying out electric spark discharge on the core and the cavity in part, and then carrying out large inclined top on a rear bumper rear die, matching the traveling position and integrally flying the front and rear die combined die parting surfaces.
2. The method for manufacturing an integrated two-color automobile bumper according to claim 1, wherein a color separation groove between the upper bumper body and the lower bumper body is used for two-color spraying in the next step, and the width of the color separation groove is 1mm to 10 mm.
3. The method of manufacturing an integrated two-color automobile bumper according to claim 2, wherein the width of the color separation groove is 3 mm.
4. The method for manufacturing the integrated double-color automobile bumper according to claim 2, wherein the double-color spraying is realized by utilizing the characteristic of a color separation groove, adopting a high-temperature resistant shielding film to realize the painting color of an upper body, and adopting a leather pattern characteristic to be retained in the shielding of the lower half part, and finally realizing the one-time forming of the double-color automobile bumper.
5. The method of manufacturing an integrated bi-color automobile bumper according to claim 2, wherein the upper body left side panel is lapped with a body metal rear left fender, a rear left wheel arch and a rear left mud guard; the right side wall of the upper body is lapped with a rear right side fender, a rear right side wheel arch and a rear right side mudguard of a metal plate of the vehicle body; the matching surface of the left tail lamp is a matching surface area of the lower end support of the left tail lamp; the matching surface of the right tail lamp is a matching surface area supported by the lower end of the right tail lamp; the radar holes are through holes for mounting the reversing radar, are linearly and uniformly distributed on the surface of the upper body and belong to hole positions realized by a post-processing technology; the screw hole is a screw through hole for fixing the rear bumper body and the automobile body metal plate.
6. The method for manufacturing an integrated bi-color automobile bumper according to claim 2, wherein the left bracket fixing rib is correspondingly clamped on the left mounting bracket; the right bracket fixing rib is correspondingly clamped on the right mounting bracket; the left mounting bracket of the rear bumper is fixed on the left vehicle body of the metal plate, and the right mounting bracket of the rear bumper is fixed on the right vehicle body of the metal plate; the left fender fixing rib is fixed with the rear left fender through a screw, and the right fender fixing rib is fixed with the rear right fender through a screw; the middle clamping rib is clamped to the connecting hole in the middle of the metal plate of the automobile body and used for supporting the rear bumper body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910111937.9A CN109664850B (en) | 2019-02-07 | 2019-02-07 | Integrated double-color automobile bumper and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910111937.9A CN109664850B (en) | 2019-02-07 | 2019-02-07 | Integrated double-color automobile bumper and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109664850A CN109664850A (en) | 2019-04-23 |
| CN109664850B true CN109664850B (en) | 2022-03-15 |
Family
ID=66151449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910111937.9A Active CN109664850B (en) | 2019-02-07 | 2019-02-07 | Integrated double-color automobile bumper and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109664850B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110549968B (en) * | 2019-07-26 | 2023-05-23 | 天津华夏联盛汽车部件有限公司 | Rear bumper face guard assembly mounting structure |
| CN110509876A (en) * | 2019-08-13 | 2019-11-29 | 长亨汽配工业(昆山)有限公司 | A kind of dermatoglyph bumper |
| CN111112958A (en) * | 2020-01-07 | 2020-05-08 | 天津银宝山新科技有限公司 | Processing technology of bumper large insert |
| CN114103852A (en) * | 2021-11-14 | 2022-03-01 | 襄阳光瑞汽车零部件有限公司 | Lightweight truck front bumper and manufacturing method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5968218A (en) * | 1982-10-13 | 1984-04-18 | Inoue Mtp Co Ltd | Manufacture of two-tone color bumper cover |
| CN2851023Y (en) * | 2005-10-22 | 2006-12-27 | 重庆长安汽车股份有限公司 | Automobile rear bumper mounting structure |
| CN103567128A (en) * | 2013-11-20 | 2014-02-12 | 上汽通用五菱汽车股份有限公司 | Color register spraying method of automobile bumper |
| CN103934963A (en) * | 2014-03-21 | 2014-07-23 | 苏州益群模具有限公司 | Automobile bumper injection mould |
| CN204432580U (en) * | 2015-01-28 | 2015-07-01 | 长城汽车股份有限公司 | For the bumper/spoiler of vehicle |
| CN107618576A (en) * | 2017-10-18 | 2018-01-23 | 洛阳北方易初摩托车有限公司 | Front part of vehicle working of plastics bridging arrangement |
| CN107755992A (en) * | 2016-08-22 | 2018-03-06 | 方芳 | A kind of processing technology of injection mold cavity |
-
2019
- 2019-02-07 CN CN201910111937.9A patent/CN109664850B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5968218A (en) * | 1982-10-13 | 1984-04-18 | Inoue Mtp Co Ltd | Manufacture of two-tone color bumper cover |
| CN2851023Y (en) * | 2005-10-22 | 2006-12-27 | 重庆长安汽车股份有限公司 | Automobile rear bumper mounting structure |
| CN103567128A (en) * | 2013-11-20 | 2014-02-12 | 上汽通用五菱汽车股份有限公司 | Color register spraying method of automobile bumper |
| CN103934963A (en) * | 2014-03-21 | 2014-07-23 | 苏州益群模具有限公司 | Automobile bumper injection mould |
| CN204432580U (en) * | 2015-01-28 | 2015-07-01 | 长城汽车股份有限公司 | For the bumper/spoiler of vehicle |
| CN107755992A (en) * | 2016-08-22 | 2018-03-06 | 方芳 | A kind of processing technology of injection mold cavity |
| CN107618576A (en) * | 2017-10-18 | 2018-01-23 | 洛阳北方易初摩托车有限公司 | Front part of vehicle working of plastics bridging arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109664850A (en) | 2019-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109664850B (en) | Integrated double-color automobile bumper and manufacturing method thereof | |
| CN105599219A (en) | Three-step mold-embedding nanometer injection molding method for mobile phone shell | |
| CN204773361U (en) | Long and narrow piece of injection mold formula runner mechanism that moulds plastics in proper order that hides | |
| CN201816658U (en) | Automobile spoiler | |
| JPH07100331B2 (en) | Vehicle window glass manufacturing method | |
| CN103737325B (en) | More than 26 inches major diameter aluminum alloy wheel of vehicle trim manufacture crafts | |
| CN102431119A (en) | Forming decoration technology | |
| CN209581389U (en) | A kind of double-colored bumper of integral type | |
| CN104477106B (en) | Production method of highlight D post decorative sheet | |
| CN114198716B (en) | Processing method of automobile logo lampshade | |
| CN114953495A (en) | Integral film-coating electroplating process for automotive interior trim parts | |
| CN210252790U (en) | Automobile sign does not have accurate coating of formula of sheltering from and sprays paint with accurate cover utensil | |
| CN220114695U (en) | Side wall planking of bicolor car | |
| CN108422621B (en) | Three-color mold with stainless steel inserts and three-color triangular window decorative plate | |
| CN111113859A (en) | Manufacturing process of concave-convex automobile ornament | |
| CN217169560U (en) | Spraying-free injection mold of washing machine top cover frame | |
| CN217476487U (en) | Spraying-free injection mold of washing machine working table plate | |
| CN212194260U (en) | Automotive interior spare frock tool that has assembly colour mistake proofing effect | |
| CN203410392U (en) | Automobile decorative plate mounting structure | |
| JP4096334B2 (en) | Mask jig and method of manufacturing mask jig | |
| CN113334697B (en) | Processing die and preparation method of air inlet grille | |
| CN114311533B (en) | Production process of colorful tail door trim | |
| CN217494997U (en) | Special mould for forming honeycomb-shaped side body mark | |
| CN118372414A (en) | Manufacturing process of metal light-transmitting button of automobile switch | |
| CN118578589A (en) | Method for improving appearance of PUR (polyurethane) exterior trim product |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: An integrated dual color car bumper and its manufacturing method Effective date of registration: 20231130 Granted publication date: 20220315 Pledgee: Bank of China Limited Xiangyang Branch Pledgor: XIANGYANG GUANGRUI AUTO PARTS Co.,Ltd. Registration number: Y2023980068289 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |