CN112606689A - Instrument panel slush molding foaming sealing structure and foaming process - Google Patents
Instrument panel slush molding foaming sealing structure and foaming process Download PDFInfo
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- CN112606689A CN112606689A CN202011576168.9A CN202011576168A CN112606689A CN 112606689 A CN112606689 A CN 112606689A CN 202011576168 A CN202011576168 A CN 202011576168A CN 112606689 A CN112606689 A CN 112606689A
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- instrument panel
- slush molding
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- 238000007789 sealing Methods 0.000 title claims abstract description 184
- 238000005187 foaming Methods 0.000 title claims abstract description 172
- 238000000465 moulding Methods 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 61
- 230000008569 process Effects 0.000 title claims abstract description 53
- 239000000463 material Substances 0.000 claims abstract description 25
- 230000008859 change Effects 0.000 claims description 24
- 230000007704 transition Effects 0.000 claims description 23
- 238000003801 milling Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 2
- 210000003491 skin Anatomy 0.000 claims 13
- 210000002615 epidermis Anatomy 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000007493 shaping process Methods 0.000 abstract 2
- 239000010410 layer Substances 0.000 description 12
- 239000003292 glue Substances 0.000 description 7
- 238000009434 installation Methods 0.000 description 4
- 230000000873 masking effect Effects 0.000 description 4
- 239000006260 foam Substances 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000037303 wrinkles Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010097 foam moulding Methods 0.000 description 1
- 238000013012 foaming technology Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000013518 molded foam Substances 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 239000002984 plastic foam Substances 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 230000035943 smell Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
- B60K35/50—Instruments characterised by their means of attachment to or integration in the vehicle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/102—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/108—Special methods for making a non-metallic packing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Instrument Panels (AREA)
Abstract
The invention discloses a slush molding foaming sealing structure of an instrument panel and a foaming process, and relates to the field of design and manufacture of automobile accessories, wherein the foaming sealing structure comprises an instrument panel body framework, a slush molding skin and a foaming layer, a foaming area where the foaming layer is located adopts closed-die foaming and is provided with a foaming material pouring gate, and a first soft sealing structure is arranged at the front end area of the instrument panel body framework and the slush molding skin; a first hard sealing structure is arranged at the rear end region of the instrument board body framework and the slush-molded skin; through implementing this technical scheme, can effectively solve the technical problem that current slush molding foaming instrument board product quality percent of pass is low, adopt soft seal structure and hard seal structure ingenious combination, can effectively improve the shaping quality after the product slush molding foaming shaping, the instrument board foaming piece thickness of making simultaneously is thicker, feels soft comfortable to make whole quality improve by a wide margin.
Description
Technical Field
The invention relates to the field of design and manufacture of automobile parts, in particular to an instrument board slush molding foaming sealing structure and a foaming process for slush molding foaming by applying the foaming sealing structure.
Background
The automobile passenger compartment is a place where the human-computer interaction between an automobile and passengers is most frequent, the passengers can interact with interior parts and the like in the passenger compartment from the aspects of vision, hearing, touch and smell, and the touch is taken as an example, when the body of the passengers touches and the interior parts, the passengers can feel hard and soft; it is because the surface layer material structure and the surface treatment technique of interior trim parts lead to this kind of intuitionistic sensation of user, even influence the perception of high and low quality to the car, and therefore soft instrument board is more and more liked by the user.
The existing soft instrument board generally comprises a cladding instrument board, a female die forming instrument board and a slush molding foaming instrument board; however, most of slush molding instrument panels in the prior art adopt a die sinking and casting process, and the product modeling and design freedom degree is severely restricted; secondly, the instrument panel is mostly processed by stress, so that the instrument panel is easy to crack to cause poor integral continuity, and the quality problems of folds, cavities, collapse, glue leakage and the like are easy to occur after foaming and forming, and the product quality is low in qualified rate; meanwhile, the surface skin process and the frame process are difficult to remove after foaming and forming, and the labor cost of enterprises is high.
Disclosure of Invention
In view of the above technical problems, the invention aims to provide an instrument panel slush molding foaming sealing structure, which aims to effectively improve the molding quality of a product after slush molding foaming molding by skillfully combining a soft sealing structure and a hard sealing structure so as to greatly improve the overall quality.
The technical scheme adopted by the invention is as follows:
a slush molding foaming sealing structure of an instrument panel comprises an instrument panel body framework, a slush molding skin and a foaming layer, wherein a foaming area where the foaming layer is located is foamed in a closed mold mode and is provided with a foaming material pouring gate, and a first soft sealing structure is arranged at the front end area of the instrument panel body framework and the slush molding skin; and a first hard sealing structure is arranged at the rear end region of the instrument board body framework and the slush-molded skin.
According to the technical scheme, the soft sealing structure and the hard sealing structure are combined ingeniously, sealing is completed by the hard sealing structure in the foaming process, when a foaming material reaches a soft sealing area, sealing is completed by the soft sealing structure, the sealing performance is stable, the whole foaming continuity can be effectively guaranteed, and the problems of wrinkles, cavities, collapse, glue leakage and the like are avoided; meanwhile, the foaming area of the technical scheme adopts closed-die foaming, the design freedom degree of the appearance shape is larger compared with the die opening pouring process, the multi-position back-off forming can be realized, the product is stress-free in the processing process, the product is not easy to crack and further does not have seams, the whole dermatoglyph is uniform and attractive, and in comparison, the female die forming foaming is easy to damage.
Preferably, the first soft sealing structure comprises an inflating hose, the inflating hose is arranged at the front end region of the instrument panel body framework and the slush-molded skin, and when the foaming material is about to reach the soft sealing region, the inflating hose inflates to complete soft sealing; the inflation hose is adopted to realize foaming sealing, so that on one hand, bubbles in a foaming area can be extracted out, and bad foaming at the combined position of the soft seal and the hard seal is prevented; on the other hand, the better inflation sealing can be realized at the local position by utilizing the inflation hose, the molding quality of the product after slush molding foaming molding is improved, and the high-pressure-resistant rubber hose has good practicability in the foaming process.
As a preferred scheme, the first soft sealing structure further comprises a bolt composition structure, and the bolt composition structure is arranged on the framework process edge of the front end region where the instrument panel body framework and the slush-molded skin are located; the design of bolt component structure can make the installation stability after instrument board body skeleton lock better, does benefit to the design precision that improves the air hose simultaneously to improve the sealing stability of whole foaming technology.
Preferably, the bolt forming structure comprises at least four bolt structures, and the distance L1 between every two adjacent bolt structures is 260-300mm, so that the structural stability of the process edge of the framework after the framework of the instrument panel body is buckled is improved. As a further preferred scheme, the front end of the bolt structure is provided with a guide oblique angle beta, and the oblique angle beta is 15-20 degrees, so that the instrument panel body framework is conveniently installed in the foaming mold.
As a preferred scheme, second soft sealing structures are arranged at the tail ends of the two sides of the instrument board body framework and the slush-molded surface skin, and third soft sealing structures are arranged at the tail ends of the rear ends of the instrument board body framework and the slush-molded surface skin; preferably, the second soft sealing structure and the third soft sealing structure both comprise the structure formed by the inflating hose and the bolt, and a gradual change surface transition structure is arranged at the position of an inflating joint between the instrument panel body framework and the slush-molded skin; above-mentioned gradual change face transition structure can prevent effectively that the foaming is bad to appear in soft or hard sealed joint position, if technical problem such as fold, cavity, collapse, hourglass are glued.
Preferably, the length L2 of the transition structure of the gradual change surface along the gradual change area of the foaming layer is more than or equal to 20 mm; as a further preferable scheme, the transition structure angle psi of the gradual change surface is about 15 degrees, and the gradual change R angle R2 is about R30mm, which is beneficial to improving the sealing performance of the soft and hard sealing joint position, and further improving the foaming quality of the product in the area.
Preferably, the first hard sealing structure comprises a hard sealing rib which is arranged on the instrument panel body framework and has a trapezoidal section, the thickness of the top end, close to the slush-molded skin, of the hard sealing rib is smaller than the thickness of the root part, installed on the instrument panel body framework, of the hard sealing rib, and the thickness of the root part material of the hard sealing rib is determined according to the angle of the mold; as a further preferable scheme, second hard sealing structures are arranged in the areas of the instrument panel body framework and the columns a on the two sides of the slush-molded skin, the second hard sealing structures are preferably the same as the first hard sealing structures, and simultaneously, the gradual change surface transition areas of the hard sealing structures and the soft sealing structures preferably adopt the gradual change surface transition structures so as to ensure a better sealing effect in the areas.
On the other hand, the invention also provides a foaming process, which utilizes the instrument board slush molding foaming sealing structure to carry out slush molding foaming, and the foaming process comprises the following process steps:
the instrument panel body framework is formed through an injection mold, the slush-molded skin is formed through a slush-molded mold, the foaming layer is formed through a foaming mold, sealing is completed through a hard sealing structure in the foaming process, and sealing is completed through a soft sealing structure when the foaming material reaches a soft sealing area.
And as a preferred scheme, after foaming is finished, cutting off the instrument board body framework and the process edge of the slush-molded skin in a milling mode.
The instrument panel manufactured by the slush molding foaming process in the technical scheme has thicker foaming thickness, generally 4-10mm, so that the instrument panel has soft and comfortable hand feeling; after foaming and forming, the surface process edge is removed in a hand tearing mode, the framework process edge is removed in a milling mode, the automation degree is high, and the labor cost can be greatly reduced.
The invention has the following beneficial effects:
1. the slush molding foaming instrument panel adopts closed-die foaming, sealing is completed by the hard sealing structure in the foaming process, and when the foaming material reaches a soft sealing area, sealing is completed by the soft sealing structure, so that the continuity of overall foaming can be effectively ensured, the problems of wrinkles, cavities, collapse, glue leakage and the like are avoided, the molding quality of the slush molding foaming molded product is improved, and the overall quality is greatly improved.
2. According to the first soft sealing structure, the inflation hose is adopted to realize foaming sealing, and the installation stability of the instrument panel body framework after buckling is ensured by combining a bolt composition structure, so that the design precision of the inflation hose is effectively guaranteed, and on one hand, bubbles in a foaming area can be extracted by the design of the inflation hose, and bad foaming at the combination position of the soft sealing and the hard sealing is prevented; on the other hand, the better inflation sealing can be realized at the local position by utilizing the inflation hose, the molding quality of the product after slush molding foaming molding is improved, and the soft sealing structure is ingenious and reasonable in design.
3. The first hard sealing structure adopts the hard sealing ribs with the trapezoidal sections for sealing, the structure is simple in design, ingenious and reasonable, and the processing procedure is simplified; and the gradual change surface transition region of the hard sealing structure and the soft sealing structure is preferably sealed by adopting a gradual change surface transition structure, so that the region can be effectively ensured to have a better sealing effect, a seam is not easy to generate, and the whole dermatoglyph is uniform and attractive.
4. The invention can realize that the body framework is locally subjected to a slush molding foaming process, so that the integral continuous aesthetic property is greatly improved, and the instrument panel body framework is also provided with a second soft sealing structure, a third soft sealing structure and a second hard sealing structure by combining the first soft sealing structure and the first hard sealing structure, and a gradually-changed surface transition structure is arranged at the position of an inflation joint of the instrument panel body framework and the slush molding skin, so that the technical problem of poor foaming at the combined position of the soft sealing and the hard sealing can be effectively prevented by the gradually-changed surface transition structure, and the slush molding is soft in texture, so that the integral quality is further greatly improved.
5. The instrument panel foaming piece made by the slush molding foaming sealing structure is thick, generally 4-10mm, so that the instrument panel foaming piece is soft and comfortable in hand feeling; after foaming and forming, the surface process edge is removed in a hand tearing mode, the framework process edge is removed in a milling mode, the automation degree is high, and the labor cost can be greatly reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 shows a schematic view of a slush-molded foam sealing structure for an instrument panel in an embodiment of the present invention;
FIG. 2 is a schematic view of an instrument panel body skeleton according to an embodiment of the present invention;
FIG. 3 shows a schematic representation of a slush-molded skin in an embodiment of the present invention;
FIG. 4 shows a cross-sectional view A-A of FIG. 1 in accordance with an embodiment of the present invention;
FIG. 5A shows a schematic view of a latch construction in an embodiment of the invention;
FIG. 5B shows a schematic view of the installation of the latch structure in an embodiment of the invention;
FIG. 6 shows a schematic view of a first hard seal structure in an embodiment of the invention;
FIG. 7 is a schematic diagram of a transition structure of a gradual change surface in an embodiment of the present invention;
fig. 8 shows a schematic view of a foaming material pouring gate in an embodiment of the present invention.
In the figure: 1-instrument panel body skeleton; 2-slush molding skin; 3-a foamed layer; 4-an inflation hose; 5-foaming mold cavity; 6-foaming mould core; 7-a plug structure; 8-framework process edge; 9-hard sealing ribs; 10-a transition structure of a gradual change surface; 11-A column region; 12-epidermis a side; 13-foaming material pouring gate.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Example one
Referring to fig. 1 to 4, the present embodiment provides an instrument panel slush molding foaming sealing structure, which is applied between a foaming mold core 6 and a foaming mold cavity 5 of a slush molding foaming instrument panel mold, for ensuring the sealing performance and the integral continuity of the instrument panel slush molding foaming process; the foaming sealing structure comprises an instrument board body framework 1, a slush molding skin 2 and a foaming layer 3, wherein a foaming area where the foaming layer 3 is located is foamed by adopting a closed die and is provided with a foaming material pouring gate, namely the foaming material can be sealed in a self-sealing form by adopting the closed die pouring.
The first soft sealing structure is arranged at the front end region of the instrument panel body framework 1 and the slush-molded skin 2, and the front end region referred to in the embodiment is the same as the front end region generally referred to in the molded instrument panel, that is, the regions a-b-c in fig. 1 of the embodiment adopt soft sealing; specifically, the first soft sealing structure provided by the embodiment includes an inflation hose 4, the inflation hose 4 is disposed at the front end region of the instrument panel body framework 1 and the slush-molded skin 2, and when the foaming material is about to reach the soft sealing region, the inflation hose 4 inflates air to complete the soft sealing; preferably, the first soft sealing structure further comprises a bolt composition structure, and the bolt composition structure is arranged on the framework process edge 8 of the front end region where the instrument panel body framework 1 and the slush-molded skin 2 are located; due to the design of the bolt composition structure, the mounting stability of the instrument panel body framework 1 after buckling is better, and the design precision of the inflatable hose 4 is improved, so that the sealing stability of the whole foaming process is improved; in combination with the design of the bolt forming structure, the inflation hose 4 provided by the embodiment is utilized to realize foaming sealing, so that on one hand, bubbles in a foaming area can be extracted out, and bad foaming at the combined position of the soft sealing and the hard sealing is prevented; on the other hand, the better inflation sealing can be realized at the local position by utilizing the inflation hose 4, the molding quality of the product after slush molding foaming molding is improved, and the high-pressure vacuum plastic foam molding device has good practicability in the foaming process.
In the present embodiment, the structural design of the latch component structure is optimized, and as shown in fig. 5A and 5B, at least four latch structures 7 are arranged on the framework process edge 8 in the area a-B-c in fig. 1, in the present embodiment, the four latch structures 7 are taken as an example, the thickness t1 of each latch structure 7 is about 3.0mm, the width a of each latch structure 7 is about 45mm, and after the latch structures 7 are inserted into the instrument panel body framework 1, the height h1 of the latch structures, which are arranged outside the framework process edge 8, is 40-50 mm; in order to improve the structural stability of the process edge 8 of the framework after the instrument panel body framework 1 is buckled, the distance L1 between two adjacent bolt structures 7 is kept at 260-300mm in the embodiment; meanwhile, in order to facilitate the installation of the instrument panel body framework 1 into the foaming mold, the front end of the bolt structure 7 is provided with a guide oblique angle beta, the oblique angle beta is 15-20 degrees, and the structural design is ingenious and reasonable.
In the present embodiment, a first hard sealing structure is provided at the rear end region of the instrument panel body skeleton 1 and the slush-molded skin 2, and the rear end region referred to here is the same as the rear end region generally referred to in the molded instrument panel, that is, the region e-f, g-h-j, k-m in fig. 1 of the present embodiment; specifically, as shown in fig. 6, the first hard sealing structure includes a hard sealing rib 9 which is disposed on the instrument panel body skeleton 1 and has a trapezoidal cross section, the thickness of the top end of the hard sealing rib 9 close to the slush molding skin 2 is smaller than the thickness of the root portion of the hard sealing rib mounted on the instrument panel body skeleton 1, and the thickness of the root portion material of the hard sealing rib 9 is determined according to the angle of the mold.
In order to prevent the front end of the instrument board body framework 1 from deforming in the injection molding or foaming process, a flanging H can be added on the instrument board body framework 1, and the height of the flanging H is about 5 mm; with the design of the slush-molded skin 2 in fig. 5, the distance L1 between the A surface 12 of the slush-molded skin and the instrument panel body skeleton 1 is about 2.7mm at the soft sealing position, the diameter d1 of the inflation hose 4 is about 10mm, during the foaming process, the sealing is firstly completed at the hard sealing position, and when the foaming material is about to reach the soft sealing area, the soft sealing is completed by the inflation hose 4 for re-inflation.
On the other hand, the embodiment further provides a foaming process for performing slush molding foaming by using the instrument panel slush molding foaming sealing structure, which includes the following process steps:
the instrument board body framework 1 is formed through an injection mold, and the thickness of the instrument board body framework 1 is 3.5 mm; the slush molding skin 2 is molded through a slush molding die, the thickness of the slush molding skin 2 is 1.2mm, and the molding R angle R of the slush molding skin 2 is about equal to 1.5 mm; the foaming layer 3 is formed through a foaming mould, the thickness of the foaming layer 3 is 10mm, in the foaming process, the first hard sealing structure is used for sealing, and when the foaming material reaches a soft sealing area, the first soft sealing structure is used for sealing; in order to guarantee that the clamping position of the left side grating and the right side grating is accurate, the grating clamping surface is specially made into a mold for injection molding, so that when foaming is carried out, masking paper is required to be pasted at the grating position for sealing, and after foaming is finished, the masking paper is removed through milling.
Further, the entire foaming area is foamed by closed-mold foaming, and as shown in FIG. 8, the dimension d2 of the foaming material pouring gate 13 is about
In the preferred embodiment, the cross ribs with a thickness of about 2.0mm are formed in the middle of the foaming material pouring gate to divide the pouring gate, so as to avoid the impact force and the rubber material from the pouring gate from causing impact marks on the A surface 12 of the slush-molded skin. In order to prevent the glue leakage at the positions of the mould pouring head and the foaming material pouring gate, a sealing foam is required to be added at the position of the pouring gate; after foaming is finished, the process edges of the instrument board body framework 1 and the slush molding skin 2 are cut off in a milling mode.
In the above way, the instrument panel manufactured by the slush molding foaming process of the embodiment is thicker in foaming thickness and is soft and comfortable in hand feeling when the soft sealing structure and the hard sealing structure are ingeniously combined and applied to the slush molding foaming process; meanwhile, the sealing structure can effectively guarantee the continuity of overall foaming, avoids the problems of wrinkles, cavities, collapse, glue leakage and the like, adopts closed-mold foaming in a foaming area, has larger design freedom degree of appearance and shape relative to a mold opening pouring process, can realize multi-position back-off molding, has no stress processing process of a product, is not easy to crack and further has no seam generation, has uniform and attractive integral dermatoglyph, and can effectively improve the molding quality of the product after slush molding and foaming molding so as to greatly improve the overall quality.
Example two
The second embodiment is substantially the same as the first embodiment, except that: with reference to fig. 1 to 4, the present embodiment provides a slush molding foaming sealing structure for an instrument panel, and on the basis of the first embodiment, the present embodiment is further provided with a second soft sealing structure, a third soft sealing structure and a second hard sealing structure; specifically, second hard sealing structures are arranged in the A column regions 11 on two sides of the instrument panel body framework 1 and the slush-molded skin 2, namely, the regions a-n and c-d in the embodiment of FIG. 1 adopt hard sealing; the second hard sealing structure is preferably the same as the first hard sealing structure, and hard sealing is performed by arranging a hard sealing rib 9 on the instrument panel body framework 1, the thickness t2 of the hard sealing rib 9 close to the top end of the slush-molded skin 2 is 1.0-2.0mm in the embodiment, the thickness t3 of the root part of the hard sealing rib 9 installed on the instrument panel body framework 1 is determined according to the angle of the mold, and the distance h2 between the surface a 12 of the slush-molded skin and the sealing rib is about 0.3 mm.
In the embodiment, second soft sealing structures are arranged at the tail ends of two sides of the instrument panel body framework 1 and the slush molding skin 2, namely, soft sealing is adopted in the areas d-e, m-n in the figure 1 of the embodiment, and the second soft sealing structures comprise structures formed by the inflating hose 4 and the plug pins in the first embodiment; furthermore, in order to prevent poor foaming at the soft and hard sealing combination position, a gradual change surface transition structure 10 is arranged at the position of an inflation joint of the instrument panel body framework 1 and the slush molding skin 2; as shown in fig. 7, the length L2 of the gradual change region of the gradual change surface transition structure 10 along the foam layer 3 provided in the present embodiment is greater than or equal to 20mm, and as a preferred scheme of the gradual change surface transition structure 10, the angle Ψ of the gradual change surface transition structure 10 is about 15 °, and the gradual change R angle R2 is about R30 mm; the design of combining bolt component structure and gradual change face transition structure 10 can also adopt and paste the sponge strip mode and carry out sealing process to can not have the local position condition of leaking glue when guaranteeing to foam.
The third soft sealing structure provided in this embodiment is disposed at the rear end of the instrument panel body framework 1 and the slush-molded skin 2, that is, in this embodiment, soft sealing is adopted in the f-g, j-k region in fig. 1, and the third soft sealing structure is the same as the second soft sealing structure in this embodiment, and both of them include the structure formed by the inflation hose 4 and the plug pin in the first embodiment, and the gradual transition region of the hard sealing structure and the soft sealing structure is provided with the gradual transition structure 10 as shown in fig. 7, so that details are not described.
On the other hand, the embodiment further provides a foaming process, wherein slush molding foaming is performed by using the instrument panel slush molding foaming sealing structure, and the foaming process comprises the following process steps:
the instrument board body framework 1 is formed through an injection mold, and the thickness of the instrument board body framework 1 is 2.5 mm; the slush molding skin 2 is molded by a slush molding die; the thickness of the slush molding surface skin 2 is 0.8mm, and the molding R angle R of the slush molding surface skin 2 is equal to about 1.5 mm; the foaming layer 3 is formed through a foaming mould, the thickness of the foaming layer 3 is 4mm, in the foaming process, the first hard sealing structure and the second hard sealing structure are used for sealing, and when a foaming material reaches a soft sealing area, the first soft sealing structure, the second soft sealing structure and the third soft sealing structure are used for sealing; in order to ensure that the clamping positions of the left and right side gratings are accurate, the clamping surfaces of the gratings are specially made into a mold for injection molding, so that masking paper is adhered to the grating for sealing during foaming, and after foaming is finished, the masking paper is removed by milling; and after the foaming molding, the surface technical edge is removed in a hand tearing mode, the framework technical edge 8 is removed in a milling mode, the automation degree is high, and the labor cost can be greatly reduced.
In conclusion, the slush molding foaming instrument panel adopts closed-mold foaming and adopts a soft sealing structure and a hard sealing structure which are ingeniously combined; in the foaming process, the sealing is finished by the hard sealing structure, when the foaming material reaches a soft sealing area, the sealing is finished by the soft sealing structure, so that the continuity of the integral foaming can be effectively ensured, the problems of folds, cavities, collapse, glue leakage and the like are avoided, and the forming quality of the product after slush molding foaming forming is improved, so that the integral quality is greatly improved; simultaneously, different sealing structures and hard sealing structures are arranged in different foaming areas, and a gradual change surface transition structure 10 is arranged in a gradual change transition area of the hard sealing structure and the soft sealing structure, so that the technical problem of bad foaming at the soft and hard sealing combination position can be effectively prevented, and the integral dermatoglyph of the product is ensured to be uniform and attractive.
The instrument panel foaming piece made by the slush molding foaming sealing structure is thick, generally 4-10mm, so that the instrument panel foaming piece is soft and comfortable in hand feeling; after foaming and forming, the skin process edge is removed in a hand tearing mode, the framework process edge 8 is removed in a milling mode, the automation degree is high, the labor cost can be greatly reduced, the method has good application prospect and popularization and use value in the technical field of instrument board slush molding design and manufacture, and the method is suitable for popularization and application.
The present specification and figures are to be regarded as illustrative rather than restrictive, and it is intended that all such alterations and modifications that fall within the true spirit and scope of the invention, and that all such modifications and variations are included within the scope of the invention as determined by the appended claims without the use of inventive faculty.
Claims (10)
1. The utility model provides an instrument board slush molding foaming seal structure, includes instrument board body skeleton, slush molding epidermis and foaming layer, its characterized in that: the foaming area where the foaming layer is located is foamed in a closed mode and is provided with a foaming material pouring gate, and a first soft sealing structure is arranged in the front end area of the instrument board body framework and the slush-molded surface skin; and a first hard sealing structure is arranged at the rear end region of the instrument board body framework and the slush-molded skin.
2. The instrument panel slush molding foaming seal structure of claim 1, characterized in that: the first soft sealing structure comprises an inflating hose, the inflating hose is arranged in the front end region of the instrument panel body framework and the slush-molded skin, and when foaming materials are about to reach the soft sealing region, the inflating hose is inflated to complete soft sealing.
3. The instrument panel slush molding foaming seal structure of claim 2, characterized in that: the first soft sealing structure further comprises a bolt composition structure, and the bolt composition structure is arranged on the framework process edge of the front end region where the instrument panel body framework and the slush-molded skin are located.
4. The instrument panel slush molding foaming seal structure of claim 3, characterized in that: the plug pin composition structure comprises at least four plug pin structures, and the distance L1 between two adjacent plug pin structures is 260-300 mm; preferably, the front end of the bolt structure is provided with a guide oblique angle beta, and the oblique angle beta is 15-20 degrees.
5. The instrument panel slush molding foaming seal structure of claim 3, characterized in that: second soft sealing structures are arranged at the tail ends of the two sides of the instrument board body framework and the slush-molded skin, and third soft sealing structures are arranged at the tail ends of the rear ends of the instrument board body framework and the slush-molded skin; preferably, the second soft sealing structure and the third soft sealing structure both comprise the structure formed by the inflating hose and the bolt, and a gradual change surface transition structure is arranged at the position of an inflating joint between the instrument panel body framework and the slush-molded skin.
6. The instrument panel slush molding foaming seal structure of claim 5, characterized in that: the length L2 of the transition structure of the gradual change surface along the gradual change area of the foaming layer is more than or equal to 20 mm.
7. The instrument panel slush molding foaming seal structure of claim 1, characterized in that: the first hard sealing structure comprises a hard sealing rib which is arranged on the instrument board body framework and has a trapezoidal section, wherein the hard sealing rib is close to the top end thickness of the slush molding skin and is smaller than the root thickness of the slush molding skin, and the root thickness of the slush molding skin is arranged on the instrument board body framework.
8. The instrument panel slush molding foaming seal structure of claim 7, characterized in that: and second hard sealing structures are also arranged in the areas of the A columns on the two sides of the instrument board body framework and the slush-molded skin, and are the same as the first hard sealing structures.
9. A foaming process is characterized in that: slush molding foaming using the instrument panel slush molding foaming sealing structure of any one of claims 1 to 8, said foaming process comprising the process steps of:
the instrument panel body framework is formed through an injection mold, the slush-molded skin is formed through a slush-molded mold, the foaming layer is formed through a foaming mold, sealing is completed through a hard sealing structure in the foaming process, and sealing is completed through a soft sealing structure when the foaming material reaches a soft sealing area.
10. The foaming process according to claim 9, characterized in that: and after foaming is finished, cutting off the instrument board body framework and the slush molding skin process edge in a milling mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011576168.9A CN112606689B (en) | 2020-12-28 | 2020-12-28 | Instrument board slush molding foaming sealing structure and foaming process |
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| CN202011576168.9A CN112606689B (en) | 2020-12-28 | 2020-12-28 | Instrument board slush molding foaming sealing structure and foaming process |
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| CN112606689A true CN112606689A (en) | 2021-04-06 |
| CN112606689B CN112606689B (en) | 2024-06-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2024012248A1 (en) * | 2022-07-14 | 2024-01-18 | 蔚来汽车科技(安徽)有限公司 | Connector structure for covering member, covering member, and vehicle |
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| JP2000317955A (en) * | 1999-05-17 | 2000-11-21 | Calsonic Kansei Corp | Instrument panel and its manufacture |
| JP2003080971A (en) * | 2001-09-14 | 2003-03-19 | Inoac Corp | Vehicle interior trim member and manufacturing method of the same |
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| CN112606689B (en) | 2024-06-11 |
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Country or region after: China Address after: 610100 Aerospace North Road, Longquanyi District, Sichuan, Chengdu Applicant after: Chengdu Aerospace Molding Co.,Ltd. Address before: 610100 Aerospace North Road, Longquanyi District, Sichuan, Chengdu Applicant before: CHENGDU SPACE MOULD AND PLASTIC Co.,Ltd. Country or region before: China |
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