CN116901355A - Injection mold of light-weight automobile door panel decoration strip - Google Patents
Injection mold of light-weight automobile door panel decoration strip Download PDFInfo
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- CN116901355A CN116901355A CN202311152353.9A CN202311152353A CN116901355A CN 116901355 A CN116901355 A CN 116901355A CN 202311152353 A CN202311152353 A CN 202311152353A CN 116901355 A CN116901355 A CN 116901355A
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- 239000007924 injection Substances 0.000 title claims abstract description 17
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- 238000005520 cutting process Methods 0.000 claims abstract description 16
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- 239000003292 glue Substances 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 8
- 238000001746 injection moulding Methods 0.000 claims description 5
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- 238000007493 shaping process Methods 0.000 claims description 4
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14065—Positioning or centering articles in the mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14778—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
- B29C45/14786—Fibrous material or fibre containing material, e.g. fibre mats or fibre reinforced material
-
- 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
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C45/2708—Gates
-
- 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
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C45/7312—Construction of heating or cooling fluid flow channels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/36—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and impregnating by casting, e.g. vacuum casting
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
- B29C70/541—Positioning reinforcements in a mould, e.g. using clamping means for the reinforcement
-
- 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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C2045/1486—Details, accessories and auxiliary operations
- B29C2045/14868—Pretreatment of the insert, e.g. etching, cleaning
-
- 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
- B29L2031/3005—Body finishings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses an injection mold for a light automobile door panel decorative strip, which comprises a fibrilia layer and a felt layer which are sequentially laminated from an outer layer downwards, wherein a honeycomb reinforcing rib and a plurality of assembly structures are arranged on the back surface of the decorative substrate, the decorative substrate is injection molded after one-time mold pressing and die cutting in a mold, the molded product meets the mechanical property and strength of an automobile interior part, simultaneously has good comfort, light weight and environmental friendliness, is manufactured by one-time molding of the mold designed by the design, utilizes a sectional fixture to fix the fibrilia layer and the felt layer, is heated in a baking box, has good shape following property, is then put into the mold for die cutting and molding, and is reversely injected by a rear mold plate to form a product by attaching a plastic melt and the felt layer.
Description
Technical Field
The invention relates to the field of injection molding of automotive interior parts, in particular to an injection mold of a light-weight automotive door panel decorative strip.
Background
With the continuous development of the automobile industry, research and application of automobile materials are also receiving more and more attention, and traditional automobile interior materials mainly comprise plastics and leather, are attractive, but are not environment-friendly, and have complex processing technology and high cost.
Bast fibers represented by ramie, flax, hemp (hemp), jute, kenaf and the like and leaf fibers represented by sisal have the advantages of large length, specific strength, specific modulus and the like, and the fibers can be continuously processed into continuous yarns, are used as unidirectional reinforcing fibers, reinforcing fabrics, non-woven materials and the like of composite materials, and have the advantages of light weight, high strength, wear resistance, easy cleaning, low carbon, environmental friendliness and the like, so that the bast fibers gradually become research hotspots in the field of automobiles;
the felt structure has stable performance, is not easy to loosen and has high elasticity, and has good heat insulation and sound insulation performance, and the fibrilia and the felt material are combined with the thermoplastic polymer to form a fiber reinforced composite material part, for example: interior trim parts such as automobile seats, door panels and the like; not only can the mechanical property and mechanical strength of the automotive interior be met, but also the comfort, the light weight and the environmental protection of the automobile can be further improved.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide an injection mold for a light-weight automobile door panel decorative strip.
In order to achieve the above purpose, the present invention is realized by the following technical scheme: the utility model provides an injection mold of lightweight car door plant ornamental strip, includes front mould and rear mould, sets up the die cavity on the front mould board, sets up rectangle section bar anchor clamps and core on the rear mould board, four frames of rectangle section bar anchor clamps are located the outside of core, core edge sets up protruding sword around, die cavity edge all around is provided with the recess corresponding with protruding sword, protruding sword and recess zero degree subsides tightly insert all around, form the blade, set up a plurality of glue inlet on the core, every glue inlet both sides are connected and are crossed the gluey recess, and a plurality of glue that cross the recess links to each other and constitute honeycomb and cross gluey passageway, still set up a plurality of and the assembly structure shaping groove of crossing gluey recess connection on the core, it is protruding, be higher than the core surface to cross the top both sides of gluey recess, and when front mould board and rear mould board compound die, this protruding position presses the decorative substrate back, forms a plurality of sealing glue recesses at decorative substrate's back.
The decorative substrate comprises a fibrilia layer and a felt layer which are sequentially laminated downwards from an outer layer, wherein the fibrilia layer sheet and the felt layer sheet are positioned and clamped by a rectangular section bar clamp and hung on a rear template after being heated in a baking oven, the front template and the rear template are subjected to die assembly, die cutting and forming, the back surface of the felt layer is connected with a vertical reinforcing rib and a vertical assembly structure which are formed by injection molding of a plurality of glue passing grooves and a plurality of assembly structure forming grooves, and a plurality of vertical reinforcing ribs are connected to form a honeycomb reinforcing rib.
The rectangular section bar clamp comprises: go up section bar press from both sides frame and lower section bar press from both sides the frame, go up section bar press from both sides the frame down, fibrilia layer sheet and felt layer sheet all set up sheet locating hole and guiding hole, fibrilia layer sheet and felt layer sheet tiling from top to bottom are in the middle of last section bar press from both sides frame and lower section bar press from both sides the frame, align each other from top to bottom through sheet locating hole and guiding hole, and the locating pin inserts the sheet locating hole and accurately fixes a position the sheet, go up section bar press from both sides frame and lower section bar press from both sides the frame and realize pressing from both sides the frame accurately to its location from top to bottom through pressing from both sides the frame locating pin, rethread screw press pincers with last section bar press from both sides frame and lower section bar press from both sides the frame and compress tightly, carry out the pre-compaction to the sheet, set up the guide post on the back template, hang rectangle section bar anchor clamps in back template one side in-process, the guide post inserts the guiding hole and hangs the direction.
And the four corners of the front template are symmetrically provided with anti-jacking springs, and when the die is opened, the anti-jacking springs reversely jack the four corners of the rectangular section fixture to one side of the rear template.
Due to the material characteristics of the decorative substrate, the die temperature difference between the front die plate and the rear die plate is controlled between 20 ℃ and 30 ℃ during die closing and die cutting.
The entering direction of the peripheral edge of the cavity and the core is parallel to the opening and closing directions of the mold, so that the synchronism and consistency of zero-degree close insertion of the periphery of the cavity and the core are ensured.
The parting line of the decorative substrate must be at the outermost edge of the contour of the decorative substrate to ensure that the rear mold plate does not appear thin steel after parting; and the angle between the outermost edge of the outline of the decorative substrate and the demoulding direction is required to be larger than 7 degrees so as to ensure that the demoulding of the decorative substrate is not damaged by pulling.
The front die plate and the rear die plate are respectively provided with a front die waterway and a rear die waterway, and the front die waterway and the rear die waterway are arranged along with the extension of the cutting edge.
Compared with the prior art, the invention has the beneficial effects that: with "low carbon environmental protection" as the target, this development has one kind and has used fibrilia layer and felt layer as the door plant ornamental strip and corresponding mould of base plate, the product possesses fine comfort level, lightweight and environmental protection again when satisfying automotive interior spare mechanical properties, intensity, mould one shot forming preparation that adopts this design forms, utilize the fixed fibrilia layer of section bar anchor clamps and felt layer, put into the baking oven heating, make its have back good shape follow-up nature, put into the mould die-cutting shaping again, reverse injecting glue through the back template, plastic melt and felt layer laminating shaping product, mould structural design is reasonable, the structure is ingenious, mould production technology is simple and convenient, with low costs, efficient.
Drawings
FIG. 1 is a general cross-sectional view of the present invention;
FIG. 2 is a schematic perspective view of a front form of the present invention;
FIG. 3 is a schematic perspective view of a rear form according to the present invention;
FIG. 4 is an enlarged schematic view of a partial structure of a core on a rear form of the present invention;
FIG. 5 is an enlarged schematic view of a partial structure of a glue groove on a mandrel according to the present invention;
FIG. 6 is a schematic perspective view of a rectangular section bar clamp of the present invention;
FIG. 7 is a schematic diagram of a partial top view of a rectangular section bar clamp of the present invention;
FIG. 8 is a schematic diagram of a part of a rectangular section bar clamp according to the present invention;
FIG. 9 is a schematic view showing a state in which a rectangular section bar clamp of the present invention is put into a rear die plate and die-cut to form a decorative substrate;
FIG. 10 is a schematic cross-sectional view of a portion of the front and rear mold plates of the present invention in the closed position;
FIG. 11 is a schematic view of the back structure of the decorative substrate of the present invention;
FIG. 12 is an enlarged schematic view of a part of the seal groove on the back of the decorative substrate;
FIG. 13 is a schematic perspective view of a door trim strip according to the present invention;
FIG. 14 is a schematic diagram showing a second perspective view of a door trim strip according to the present invention;
fig. 15 is an enlarged partial schematic view of a vertical stiffener on the back of a felt layer of a door panel trim strip according to the present invention.
In the figure: 1-a front template; 11-a cavity; 111-grooves; 12-a counter top spring; 2-a rear template; 21-a core; 211-a convex knife; 212, a glue inlet; 213-gluing grooves; 214-an assembly structure forming groove; 22-guide posts; 3-a rectangular section bar clamp; 31-upper section bar clamping frame; 32-lower section bar clamping frame; 33-sheet positioning holes; 34-a guide hole; 35-locating pins; 36-clamping frame positioning pins; 37-thread pressing pliers; 4-decorating the substrate; 41-fibrilia layers; 42-felt layer; 421-seal grooves; 43-vertical reinforcing ribs; 44-vertical assembly structure; 45-outermost edge of the profile.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent and understood.
As shown in fig. 1 to 15, the invention provides an injection mold for a light automobile door panel decorative strip, which comprises a front mold and a rear mold, wherein a cavity 11 is arranged on the front mold plate 1, a rectangular section fixture 3 and a core 21 are arranged on the rear mold plate 2, four frames of the rectangular section fixture 3 are positioned at the outer side of the core 21, convex cutters 211 are arranged at the peripheral edges of the core 21, grooves 111 corresponding to the convex cutters 211 are arranged at the peripheral edges of the cavity 11, the convex cutters 211 are tightly inserted and penetrated at zero degrees around the grooves 111 to form cutting edges (the cutting edges at a certain position are shown as virtual coil outlet positions in fig. 10), a plurality of glue inlets 212 are arranged on the core 21, two sides of each glue inlet 212 are connected with glue passing grooves 213, the glue passing grooves 213 are connected to form a honeycomb glue passing channel, the mold core 21 is further provided with a plurality of assembly structure forming grooves 214 connected with the glue passing grooves 213, two sides of the top of the glue passing grooves 213 are protruded and higher than the surface of the mold core 21 (as shown by the arrow pointing positions in fig. 5), when the front mold plate 1 and the rear mold plate 2 are assembled, the protruded positions press the back of the decorative substrate 4, a plurality of glue sealing grooves 421 are formed on the back of the decorative substrate 4 to ensure that plastic melt does not overflow to two sides during glue injection, the size of the glue sealing grooves 421 is reasonable in design according to the structural characteristics of a product, and the product quality can be influenced by the too wide or the too narrow, in the scheme, the width of the designed glue sealing grooves 421 is 0.7mm, and the depth is 0.25mm.
The decorative substrate 4 comprises a fibrilia layer 41 and a felt layer 42 which are sequentially laminated from the outer layer downwards, the fibrilia layer 41 and the felt layer 42 are positioned and clamped by a rectangular section bar clamp 3, are sent into a baking oven to be heated and then are hung on a rear template 2, the front template 1 and the rear template 2 are subjected to die assembly, die cutting and forming, the back surface of the felt layer 42 is connected with a vertical reinforcing rib 43 and a vertical assembling structure 44 which are formed by injection molding of a plurality of glue passing grooves 213 and a plurality of assembling structure forming grooves 214, a plurality of vertical reinforcing ribs 43 are connected to form a honeycomb reinforcing rib, the honeycomb reinforcing rib integrally provides omnibearing support for an automobile door panel decorative strip, and the integral strength of the automobile door panel decorative strip is improved on the basis of ensuring light weight. .
The rectangular section bar clamp 3 comprises: the upper section clamping frame 31 and the lower section clamping frame 32 are formed by assembling four section frames and are identical in size, the upper section clamping frame 31, the lower section clamping frame 32, the fibrilia layer 41 sheet and the felt layer 42 sheet are all provided with sheet positioning holes 33 and guide holes 34, the fibrilia layer 41 sheet and the felt layer 42 sheet are vertically paved between the upper section clamping frame 31 and the lower section clamping frame 32, the sheet positioning holes 33 and the guide holes 34 are mutually aligned up and down, the positioning pins 35 are inserted into the sheet positioning holes 33 to accurately position the sheet, the upper section clamping frame 31 and the lower section clamping frame 32 are positioned by the clamping frame positioning pins 36 in an up-down accurate manner, the upper section clamping frame 31 and the lower section clamping frame 32 are pressed by the threaded pressing clamp 37, the sheet is pre-pressed, the rear template 2 is provided with guide posts 22, the rectangular section clamp 3 is suspended in the guide holes 34 in a process of being inserted into the guide holes 34, and the rectangular section clamp 3 has a certain degree of freedom to adjust when the front template 1 and the rear template 2 are clamped.
The four corners of the front template 1 are symmetrically provided with anti-top springs 12, and when the die is opened, the anti-top springs 12 reversely top the four corners of the rectangular section fixture 3 to one side of the rear template 2, so that the rectangular section fixture 3 can be stably kept on the side of the rear template 2 during die opening, and falling is prevented.
Due to the material characteristics of the decorative substrate 4, the die temperature difference between the front die plate 1 and the rear die plate 2 is controlled between 20 ℃ and 30 ℃ during die closing and die cutting.
The edge entering direction of the peripheral edges of the cavity 11 and the core 21 is parallel to the opening and closing directions of the mold, so that the synchronism and consistency of zero-degree close insertion of the periphery of the cavity 11 and the core 21 are ensured.
The parting line of the decorative substrate 4 must be at the outermost edge 45 of its contour to ensure that no thin steel is present in the rear form 2 after parting; and the angle between the outermost edge 45 of the profile of the decorative substrate 4 and the demolding direction is required to be larger than 7 ° (as indicated by the angle α in fig. 10) so as to ensure that the demolding of the decorative substrate 4 is not damaged by pulling.
The front die plate 1 and the rear die plate 2 are respectively provided with a front die waterway and a rear die waterway, and the front die waterway and the rear die waterway are all arranged along with the extension of the cutting edge, so that the best cooling effect of the cutting edge is ensured, and the cutting edge is effectively prevented from deforming.
The process flow of the invention is as follows:
1. the rectangular section fixture 3 clamps the fibrilia layer 41 sheet and the felt layer 42 sheet, and the sheets are sent into a baking oven to be heated, so that the sheets are soft and have good shape following property;
2. hanging a rectangular section bar clamp 3 on one side of the rear template 2;
3. the front template 1 gradually approaches to one side of the rear template 2 and is clamped, the middle parts of the sheets of the fibrilia layer 41 and the felt layer 42 are clamped in a die cavity between the die cavity 11 and the core 21, the convex knife 211 is tightly inserted through the periphery of the groove 111 at zero degree to cut off the outer edge of the sheets, and the decorative substrate 4 is molded by die pressing and die cutting;
4. injecting plastic melt of the injection molding machine into the mold core 21 from one side of the rear mold plate 2, flowing the plastic melt in the glue passing groove 213, and fusing and connecting the plastic melt with the back surface of the felt layer 42 of the decorative substrate 4 into a whole after cooling and molding;
5. the front template 1 moves to one side far away from the rear template 2, the mold is opened, and the ejection mechanism of the mold rear mold ejects out a product;
6. the outer layer of the fibrilia layer 41 is manually ground and polished, so that the visual appearance feeling and touch of the door panel decorative strip are improved.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (8)
1. The utility model provides an injection mold of lightweight car door plant ornamental strip, includes front mould and back mould, and its characterized in that sets up die cavity (11) on front bezel (1), sets up rectangle section bar anchor clamps (3) and core (21) on back bezel (2), four frames of rectangle section bar anchor clamps (3) are located the outside of core (21), core (21) edge all around sets up protruding sword (211), die cavity (11) edge all around be provided with protruding sword (211) corresponding recess (111), protruding sword (211) are closely inserted with recess (111) zero degree all around, form the blade, set up a plurality of glue inlet (212) on core (21), every glue inlet (212) both sides are connected and are crossed gluey recess (213), and a plurality of glue passing recess (213) link to each other and constitute cellular glue passing channel, still set up a plurality of and glue passing recess (213) be connected assembly structure shaping groove (214) on core (21), protruding, be higher than in front bezel (21) surface to mould (2) are pressed down to the top both sides of gluing recess (213) and are decorated back face strip (4) and are decorated back at the back and are glued template (4) and are glued back.
2. The injection mold for the light automobile door panel decorative strip according to claim 1, wherein the decorative substrate (4) comprises a fibrilia layer (41) and a felt layer (42) which are sequentially laminated from the outer layer downwards, the fibrilia layer (41) and the felt layer (42) are positioned and clamped by a rectangular section bar clamp (3), the fibrilia layer (41) and the felt layer (42) are sent into a baking oven to be heated and then hung on a rear mold plate (2), the front mold plate (1) and the rear mold plate (2) are mold-clamped, mold-pressed and mold-cut to form, the back surface of the felt layer (42) is connected with vertical reinforcing ribs (43) and vertical assembly structures (44) which are formed by injection molding of a plurality of glue passing grooves (213) and a plurality of assembly structure forming grooves (214), and the plurality of vertical reinforcing ribs (43) are connected to form the honeycomb reinforcing ribs.
3. An injection mould for a light-weight automotive door panel trim strip according to claim 2, characterized in that the rectangular profile clamp (3) comprises: go up section bar clamp frame (31) and lower section bar clamp frame (32), go up section bar clamp frame (31), lower section bar clamp frame (32), fibrilia layer (41) sheet and felt layer (42) sheet all set up sheet locating hole (33) and guiding hole (34), tiling from top to bottom in the middle of section bar clamp frame (31) and lower section bar clamp frame (32) on fibrilia layer (41) sheet and felt layer (42) sheet, align from top to bottom through sheet locating hole (33) and guiding hole (34), locating pin (35) insert sheet locating hole (33) with the sheet accurate location, go up section bar clamp frame (31) and lower section bar clamp frame (32) both sides are realized clamp frame up-down accurate to its location through clamp frame locating pin (36), and rethread screw thread clamp (37) compress tightly last section bar clamp frame (31) and lower section bar clamp frame (32), carry out the pre-compaction to the sheet, set up guide post (22) on back template (2), hang rectangle section bar anchor clamps (3) in back template (2) one side, insert guide post (34) and hang in the guiding post (34).
4. An injection mold for a light-weight automobile door panel decorative strip according to claim 3, wherein anti-top springs (12) are symmetrically arranged at four corners of the front mold plate (1), and the anti-top springs (12) are used for carrying out anti-top on four corners of the rectangular section fixture (3) towards one side of the rear mold plate (2) during mold opening.
5. An injection mould for a light-weight automotive door panel decorative strip according to claim 2, characterized in that the mould temperature difference between the front mould plate (1) and the rear mould plate (2) is controlled between 20 ℃ and 30 ℃ when mould closing and mould cutting are carried out due to the material characteristics of the decorative substrate (4).
6. The injection mold for the light-weight automobile door panel decorative strip according to claim 1, wherein the entering direction of the peripheral edges of the cavity (11) and the core (21) is parallel to the opening and closing directions of the mold, so that the synchronism and consistency of zero-degree close insertion and penetration of the periphery of the cavity (11) and the core (21) are ensured.
7. An injection mould for a light-weight automotive door panel trim strip according to claim 6, characterized in that the parting line of the decorative substrate (4) must be at the outermost edge (45) of its profile to ensure that no thin steel is present in the parting rear form (2); and the angle between the outermost edge (45) of the outline of the decorative substrate (4) and the demoulding direction is required to be larger than 7 degrees, so as to ensure that the demoulding of the decorative substrate (4) is not damaged by pulling.
8. The injection mold for the light-weight automobile door panel decorative strip according to claim 7, wherein a front mold waterway and a rear mold waterway are respectively arranged on the front mold plate (1) and the rear mold plate (2), and the front mold waterway and the rear mold waterway are respectively arranged along with the cutting edge in an extending manner.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311152353.9A CN116901355A (en) | 2023-09-08 | 2023-09-08 | Injection mold of light-weight automobile door panel decoration strip |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311152353.9A CN116901355A (en) | 2023-09-08 | 2023-09-08 | Injection mold of light-weight automobile door panel decoration strip |
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| CN116901355A true CN116901355A (en) | 2023-10-20 |
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| CN202311152353.9A Pending CN116901355A (en) | 2023-09-08 | 2023-09-08 | Injection mold of light-weight automobile door panel decoration strip |
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| CN116512517A (en) * | 2023-02-23 | 2023-08-01 | 宁波方正汽车模具股份有限公司 | Automobile ornament injection mold with fibrilia cloth precompaction structure |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101767406A (en) * | 2008-12-30 | 2010-07-07 | 比亚迪股份有限公司 | Mould for shaping mobile phone light guide panel and technology for preparing mobile phone light guide panel |
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