CN113815179A - Automobile rearview mirror mask and injection mold and injection molding method thereof - Google Patents
Automobile rearview mirror mask and injection mold and injection molding method thereof Download PDFInfo
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- CN113815179A CN113815179A CN202111090427.1A CN202111090427A CN113815179A CN 113815179 A CN113815179 A CN 113815179A CN 202111090427 A CN202111090427 A CN 202111090427A CN 113815179 A CN113815179 A CN 113815179A
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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
- B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
- B29C45/006—Joining parts moulded in separate cavities
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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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
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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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
-
- 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
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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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
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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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B29C2045/2683—Plurality of independent mould cavities in a single mould
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76498—Pressure
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76531—Temperature
-
- 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)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to an automobile rearview mirror mask, which comprises a mask body and a light guide strip which are spliced together, wherein the mask body and the light guide strip are respectively provided with a first splicing surface and a second splicing surface at the splicing positions, one side of the light guide strip is provided with a splicing part, the mask body and the light guide strip are integrally formed, so that the first splicing surface and the second splicing surface are bonded together, and the splicing part and the mask body are laminated and bonded together; the fixed die is also provided with a water channel which is externally connected with a steam die temperature controller; the injection molding method comprises the steps that a face mask body with a bulge is formed through first injection molding, then high-temperature steam is introduced into a water channel through a steam mold temperature controller, meanwhile, a light guide strip with a splicing part is formed through second injection molding, and the face mask body and the light guide strip are bonded, so that the technical problems that in the prior art, the integrally formed rearview mirror face mask is low in connection strength and unstable in bonding are solved.
Description
Technical Field
The invention relates to the technical field of automobile parts, in particular to an automobile rearview mirror mask, an injection mold and an injection molding method thereof.
Background
A light guide strip is generally mounted on a face mask of a rear view mirror of an automobile. Face guard and leaded light strip among traditional automobile rearview mirror product are two independent injection moulding's part, and face guard and leaded light strip independently develop the mould respectively promptly, and two part utilize the installation buckle on the product to assemble two parts together behind the injection moulding. The split rearview mirror mask product has the technical problems of long development period, high cost and low production efficiency. In addition, the product of installation buckle joint exists the clearance between two parts, and this clearance leads to this kind of product to be easy because of friction, the high-speed noise that produces of vehicle, even causes the astigmatic problem of leaded light strip. Therefore, a rear view mirror mask in which a mask and a light guide bar are integrally formed has appeared. Among this kind of current integrated into one piece's rearview mirror face guard, the joint strength between face guard and the leaded light strip is low, and is unstable for long-term use back face guard breaks away from with the leaded light strip, even the condition that takes place the separation promptly with the leaded light strip after the drawing of patterns of moulding plastics.
Disclosure of Invention
In view of the defects of the prior art, the first object of the present invention is to provide an automobile rearview mirror mask with stable connection between the mask body and the light guide strip and high strength.
In order to solve the technical problem, the invention provides an automobile rearview mirror mask which comprises a mask body and a light guide strip which are spliced together, wherein the mask body and the light guide strip are respectively provided with a first splicing surface and a second splicing surface at the splicing positions, one side of the light guide strip is provided with a splicing part, the splicing part extends from one end where the second splicing surface is located to the direction of the mask body, the mask body and the light guide strip are integrally formed through a secondary injection molding process, so that the first splicing surface and the second splicing surface are bonded together, and the splicing part and the mask body are stacked and bonded together.
After adopting the structure, the automobile rearview mirror mask has the following advantages: the contact area between the light guide strip and the face mask body is increased through the arrangement of the splicing part, the adhesion degree between the light guide strip and the face mask body in secondary injection molding is greatly increased, so that the connection strength between the face mask body and the light guide strip is enhanced, the face mask body and the light guide strip are not easy to break away from each other, and the connection is more stable.
As an improvement, the mask body is provided with a plurality of protrusions extending towards the direction of the splicing part, the splicing part is provided with a plurality of bonding holes for accommodating the protrusions, and when the mask body and the light guide strip are bonded together through secondary injection molding, the outer peripheral wall of each protrusion is bonded with the inner peripheral wall of the corresponding bonding hole; by adopting the structure, the contact area between the mask body and the light guide strip is further increased by arranging the bulges and the bonding holes and bonding the bulges and the bonding holes, namely the connection strength between the mask body and the light guide strip is further enhanced.
As an improvement, the bulges and the bonding holes are cylindrical, the diameter d of the bulges ranges from 1mm to 2mm, the thickness h of the splicing part ranges from 3mm to 5mm, and the width a of the splicing part ranges from 9mm to 12 mm; if the value of d is too large, a splicing part with a larger size is needed, so that the material cost is increased, and if the value of d is too small, the processing difficulty is increased; if h and a value are too big, can increase the material cost equally, if the value is too little, then do not play the effect of good reinforcing joint strength between face guard body and the leaded light strip.
The second purpose of the invention is to provide an injection mold for producing an integrally formed automobile rearview mirror mask, which has the advantages of more stable bonding between the mask body and the light guide strip and higher product quality.
In order to solve the technical problem, the invention provides an injection mold for producing the automobile rearview mirror mask, which comprises an upper code template, a runner plate, a fixed mold, a movable mold, a demoulding plate and a lower code template which are sequentially arranged from top to bottom, wherein a first cavity and a cavity assembly are arranged in the fixed mold, the cavity assembly comprises a third cavity and a second cavity, a rotating mechanism for driving the movable mold to rotate and a lifting mechanism for driving the movable mold to lift are arranged on the movable mold, two core assemblies are arranged in the movable mold, the two core assemblies are respectively positioned below the first cavity and the cavity assembly, and each core assembly comprises a first core and a second core; when the die is closed, a first die cavity for producing the mask body with the bulge is formed between the first die cavity and the first core positioned below the first die cavity, a second die cavity for producing the light guide strip with the splicing part is formed between the second die cavity and the second core positioned below the second die cavity, and a third die cavity for placing the mask body with the bulge is formed between the third die cavity and the first core positioned below the third die cavity; the fixed die is also provided with a water channel, the water channel is positioned above the cavity for producing the splicing part in the second cavity, and the water channel is externally connected with a steam die temperature controller; the runner plate is provided with a first runner and a second runner, the fixed die is provided with a first glue inlet runner and a second glue inlet runner, the first glue inlet runner is communicated with the first runner and the first cavity, and the second glue inlet runner is communicated with the second runner and the second cavity.
After adopting above-mentioned structure, production has bellied face guard body through first die cavity and first core, and second die cavity and second core production have the leaded light strip of concatenation portion, can make face guard body and leaded light strip integrated into one piece in same injection mold, pass through the water course by steam mold temperature machine and pour into high-temperature steam into to eliminate the aerial fog that produces when forming the bonding hole, improve the quality of product.
As an improvement, the first cavity, the cavity assembly and the core assembly are all in an inlaid structure; by adopting the structure, the first cavity, the cavity assembly and the core assembly can be conveniently processed.
As an improvement, each core assembly is provided with an insert; by adopting the structure, the insert can be flexibly arranged in the core assembly according to the requirement so as to achieve the required shape and facilitate the product molding.
As an improvement, a movable die is provided with a slide block and a shovel machine, a fixed die is provided with an inclined guide post, the slide block is arranged beside a core assembly in a sliding manner, a mask body comprises a tip-shaped arc surface, the slide block is provided with a forming surface matched with the arc surface, the forming surface is arranged beside the core assembly and forms a complete core with the core assembly, the shovel machine presses the slide block, the slide block is provided with a first inclined through hole, the shovel machine is provided with a second inclined through hole coaxial with the first inclined through hole, and the inclined guide post is sequentially inserted into the second inclined through hole and the first inclined through hole during die assembly; because the face guard body is the arc structure, the degree of difficulty is great for directly processing the most advanced arc surface form in the core subassembly, so adopt to process this partial structure on the slider in order to simplify the mould structure, practice thrift development cost, the shaping of the face guard body of being convenient for to can slide or change the slider according to the size difference of the product of production, make the operation more simple and convenient.
As an improvement, the stripper plate is an ejector plate, and an inclined top is arranged on the stripper plate; by adopting the structure, the product can be ejected out of the die after the product is ejected by the inclined ejector, and the operation is convenient.
The third purpose of the invention is to provide an injection molding method for the integrally molded automobile rearview mirror mask, which can produce a more stable bonding between the mask body and the light guide strip and higher product quality.
In order to solve the technical problem, the invention provides an injection molding method of an automobile rearview mirror mask, which adopts the injection mold and comprises the following steps:
s1, fixing the upper code template and the lower code template in an injection molding machine;
s2, preparing the material of the mask body and the material of the light guide strip which are dried by the dehumidifying dryer;
s3, placing the material of the mask body into a first injection hopper of an injection molding machine, and placing the material of the light guide strip into a second injection hopper of the injection molding machine;
s4, closing the fixed die and the movable die, controlling the temperature of the molten gel to be 260-270 ℃, controlling the pressure of the injected gel to be 90-100 MPA, and injecting the material of the mask body into the first cavity from an injection hopper through the first runner and the first glue inlet runner in sequence to form the mask body with the bulge;
s5, cooling for 25 to 30 seconds after injection molding;
s6, after cooling, the lifting mechanism drives the movable mould to descend to open the mould, the rotating mechanism drives the movable mould to rotate 180 degrees, the lifting mechanism drives the movable mould to ascend to be matched with the fixed mould again, and the mask body is moved to a third cavity;
s7, injecting water vapor of 100-120 ℃ into the water inlet channel from the steam mold temperature controller, injecting light guide strip materials into a second cavity from a second injection hopper sequentially through a second flow channel and a second glue inlet flow channel to form a light guide strip with a splicing part, bonding the first splicing surface and the second splicing surface together, bonding the splicing part and the mask body together, and bonding the outer peripheral wall of each bulge and the inner peripheral wall of the corresponding bonding hole together;
and S8, the lifting mechanism drives the movable die to descend to open the die, the stripper plate moves to strip the product, and finally the product is taken by hand or a mechanical arm.
After the method is adopted, the mask body with the bulge is formed through first injection molding, then the lifting mechanism and the rotating mechanism drive the movable mold to open the mold and carry out secondary mold closing, the light guide strip with the splicing part is formed in secondary injection molding, the first splicing surface is bonded with the second splicing surface, the splicing part is bonded with the mask body, meanwhile, the bulge outer peripheral wall is bonded with the inner peripheral wall of the bonding hole, the contact area between the mask body and the light guide strip is increased, meanwhile, high-temperature steam introduced from the water channel eliminates aerial fog generated in the process of producing the bonding hole, and the product quality is improved.
As an improvement, the moisture weight ratio of the material of the mask body and the material of the light guide strip in the step S2 after drying is lower than 0.025%; can improve the yield of products.
Drawings
Fig. 1 is a schematic perspective view of an entire mask for a rearview mirror of an automobile according to an embodiment of the present invention.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Fig. 3 is a schematic overall structure diagram of an injection mold according to a third embodiment of the present invention.
Fig. 4 is a partially enlarged view of a portion B in fig. 3.
FIG. 5 is a schematic structural diagram of a fixed mold part in the third embodiment of the present invention.
Fig. 6 is a partially enlarged view of a portion C in fig. 5.
FIG. 7 is a schematic structural diagram of a movable mold part in the third embodiment of the present invention.
Fig. 8 is a partially enlarged view of a portion D in fig. 7.
Fig. 9 is a schematic bottom view of a cover of a rearview mirror and a water channel in a stationary mold according to a third embodiment of the present invention.
Fig. 10 is a partially enlarged view of a portion E in fig. 9.
Reference numerals: 1. a mask body; 2. a light guide strip; 3. a code template is added; 4. a runner plate; 41. a first flow passage; 42. a second flow passage; 5. fixing a mold; 51. a first cavity; 52. a cavity assembly; 521. a third cavity; 522. a second cavity; 53. a first glue inlet flow channel; 54. a second glue inlet flow channel; 6. moving the mold; 61. a core assembly; 611. a first core; 612. a second core; 7. a stripper plate; 71. obliquely ejecting; 8. a code template is downloaded; 9. an insert; 10. a slider; 101. a first inclined through hole; 102. molding surface; 11. shoveling; 111. a second inclined through hole; 12. an inclined guide post; 13. a first splicing surface; 14. a second splicing surface; 15. a splice; 16. a protrusion; 17. an adhesive hole; 18. a water channel; 19. a circular arc surface.
Detailed Description
The mask for a rear-view mirror of an automobile, an injection mold thereof and an injection molding method thereof of the present invention will be described in detail with reference to the accompanying drawings.
The first embodiment is as follows:
as shown in fig. 1 and 2, the embodiment discloses a rearview mirror mask for an automobile, which comprises a mask body 1 and a light guide strip 2 which are spliced together, wherein a first splicing surface 13 and a second splicing surface 14 are respectively arranged at the splicing positions of the mask body 1 and the light guide strip 2; one side of the light guide strip 2 is provided with a splicing part 15, and the splicing part 15 extends from one end where the second splicing surface 14 is located to the direction of the mask body 1; the mask body 1 is provided with a plurality of cylindrical bulges 16 extending towards the direction of the splicing part 15, and the splicing part 15 is provided with a plurality of cylindrical bonding holes 17 for accommodating the bulges 16; the mask body 1 and the light guide strip 2 are integrally formed through a secondary injection molding process, so that the first splicing surface 13 and the second splicing surface 14 are bonded together, the splicing part 15 and the mask body 1 are overlapped and bonded together, and the outer peripheral wall of each bulge 16 is bonded together with the inner peripheral wall of the corresponding bonding hole 17; the diameter d of the protrusion 16 ranges from 1mm to 2mm, the thickness h of the splicing part 15 ranges from 3mm to 5mm, and the width a of the splicing part 15 ranges from 9mm to 12 mm. In this embodiment, the diameter d of the protrusion 16 is 1mm, the thickness h of the joint 15 is 3mm, and the width a is 9 mm.
Example two:
the difference between this embodiment and the first embodiment is mainly that the diameter d of the protrusion 16 is 2mm, the thickness h of the splicing part 15 is 5mm, and the width a is 12 mm.
Example three:
as shown in fig. 3, the present embodiment discloses an injection mold for producing the mask of the rearview mirror of the first or second embodiment, comprising an upper code template 3, a runner plate 4, a fixed mold 5, a movable mold 6, a stripper plate 7 and a lower code template 8, which are sequentially arranged from top to bottom; as shown in fig. 5 and 6, a first cavity 51 and cavity assemblies 52 are provided in the fixed mold 5, and each cavity assembly 52 includes a third cavity 521 and a second cavity 522; the movable die 6 is provided with a rotating mechanism for driving the movable die 6 to rotate and a lifting mechanism for driving the movable die 6 to lift, as shown in fig. 7 and 8, two core assemblies 61 are arranged in the movable die 6, and the two core assemblies 61 are respectively positioned below the first cavity 51 and the cavity assembly 52; each core assembly 61 includes a first core 611 and a second core 612; when the mold is closed, a first mold cavity for producing the mask body 1 with the protrusion 16 is formed between the first mold cavity 51 and the first mold core 611 positioned below the first mold cavity, a second mold cavity for producing the light guide strip 2 with the splice 15 is formed between the second mold cavity 522 and the second mold core 612 positioned below the second mold cavity, and a third mold cavity for placing the mask body 1 with the protrusion 16 is formed between the third mold cavity 521 and the first mold core 611 positioned below the third mold cavity; as shown in fig. 9 and 10, the fixed mold 5 is further provided with a water channel 18, the water channel 18 is located above the cavity for producing the splice 15 in the second cavity 522, and the water channel 18 is externally connected with a steam mold temperature controller; as shown in fig. 3 and 5, the runner plate 4 is provided with a first runner 41 and a second runner 42, the fixed mold 5 is provided with a first glue inlet runner 53 and a second glue inlet runner 54, the first glue inlet runner 53 is communicated with the first runner 41 and the first cavity 51, and the second glue inlet runner 54 is communicated with the second runner 42 and the second cavity 522; as shown in fig. 3, 5, and 7, in this embodiment, the first cavities 51, the cavity assemblies 52, and the core assemblies 61 are two sets, that is, two first cavities 51 and two cavity assemblies 52 are respectively provided, four core assemblies 61 are provided, two first cavities 51 are located on the left side, two cavity assemblies 52 are located on the right side, two first cavities 51 and two third cavities 521 are arranged in central symmetry, and four core assemblies 61 are arranged in central symmetry, that is, after the movable mold 6 rotates 180 °, each core assembly 61 after rotation can still be successfully matched with the first cavities 51 and the cavity assemblies 52 to produce a product; correspondingly, two first flow channels 41 and two second flow channels 42 are arranged on the flow channel plate 4, two first glue inlet flow channels 53 and two second glue inlet flow channels 54 are arranged on the fixed die 5, each left first glue inlet flow channel 53 is communicated with one first flow channel 41 and one first cavity 51, and each right second glue inlet flow channel 54 is communicated with one second flow channel 42 and one second cavity 522; this embodiment allows injection moulding of two products at a time.
In this embodiment, the stripper plate 7 is an ejector plate, the stripper plate 7 is provided with an inclined ejector 71 for stripping, and the specific structures of the rotating mechanism, the lifting mechanism, the inclined ejector 71 and the steam mold temperature controller are the prior art and are not described herein again; first cavity 51, cavity assembly 52 and core assembly 61 are all of a mosaic construction, with an insert 9 being provided on each core assembly 61.
As shown in fig. 4, a slide block 10 and a shovel machine 11 are arranged on the movable die 6, an inclined guide post 12 is arranged on the fixed die 5, the slide block 10 is arranged beside each core component 61 in a sliding manner, the mask body 1 comprises a tip-shaped arc surface 19, a forming surface 102 matched with the arc surface 19 in shape is arranged on the slide block 10, the forming surface 102 is arranged beside the core component 61 and forms a complete core with the core component 61, the shovel machine 11 presses the slide block 10, a first inclined through hole 101 is arranged on the slide block 10, a second inclined through hole 111 coaxial with the first inclined through hole 101 is arranged on the shovel machine 11, and during die assembly, the inclined guide post 12 is sequentially inserted into the second inclined through hole 111 and the first inclined through hole 101.
Because the light guide strip 2 needs a higher polished mirror surface and the mask body 1 and the light guide strip 2 are both irregular curved surfaces, the first cavity 51, the cavity assembly 52 and the core assembly 61 all adopt 1.2343ESR steel; the first cavity 51 and the first core 611 are subjected to rough machining, heat treatment, stress relief, semi-finishing, and finish machining, while the second cavity 522 and the second core 612 are subjected to rough machining, heat treatment, stress relief, semi-finishing, finish machining, and super-finishing; wherein, the hardness of the first cavity 51 and the second cavity 522 can reach HRC52-54 by the heat treatment process, so as to achieve better polishing effect; because the light guide strip 2 has the characteristic of light guide and the characteristic structure is a triangular structure, when the second core 612 is machined, the high-rotation-speed five-axis machine tool with more than forty thousand turns is adopted for finish machining.
Example four:
the embodiment discloses an injection molding method of a mask of an automobile rearview mirror in the first embodiment or the second embodiment, and the injection mold in the third embodiment is adopted, and the injection molding method comprises the following steps:
s1, fixing the upper code template 3 and the lower code template 8 in an injection molding machine;
s2, preparing the material of the mask body 1 and the material of the light guide strip 2 which are dried by the dehumidification dryer, wherein the moisture weight ratio of the material of the mask body 1 to the material of the light guide strip 2 after drying is lower than 0.025%;
s3, putting the material of the mask body 1 into a first injection hopper of an injection molding machine, and putting the material of the light guide strip 2 into a second injection hopper of the injection molding machine;
s4, closing the fixed die 5 and the movable die 6, controlling the melt adhesive temperature at 260 ℃ and the injection pressure at 90MPA, and injecting the material of the mask body 1 into the first cavity 51 from an injection hopper through the first flow channel 41 and the first adhesive inlet flow channel 53 in sequence to form the mask body 1 with the bulge 16;
s5, cooling for 25 seconds after injection molding;
s6, after cooling, the lifting mechanism drives the movable mold 6 to descend for mold opening, the rotating mechanism drives the movable mold 6 to rotate 180 degrees, the lifting mechanism drives the movable mold 6 to ascend to be matched with the fixed mold 5 again, and the mask body 1 is moved to the third cavity 521;
s7, injecting water vapor with the temperature of 100 ℃ into the water inlet channel 18 from a steam mold temperature controller, simultaneously injecting the material of the light guide strip 2 into the second cavity 522 from the second injection hopper through the second flow channel 42 and the second glue inlet flow channel 54 in sequence to form the light guide strip 2 with the splicing part 15, bonding the first splicing surface 13 and the second splicing surface 14 together, bonding the splicing part 15 and the mask body 1 together, and bonding the outer peripheral wall of each protrusion 16 and the inner peripheral wall of the corresponding bonding hole 17 together;
and S8, the lifting mechanism drives the movable mold 6 to descend to open the mold, the demolding plate 7 moves to demold the product, and finally the product is taken by hand or a mechanical arm.
Example five:
the present embodiment is different from the fourth embodiment in that the sol temperature in step S4 is 270 degrees celsius, the injection pressure is 100MPA, the cooling time in step S5 is 30 seconds, and the water vapor temperature in step S7 is 120 ℃.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above five embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
Claims (10)
1. The automobile rearview mirror mask is characterized by comprising a mask body (1) and a light guide strip (2) which are spliced together, wherein a first splicing surface (13) and a second splicing surface (14) are respectively arranged at the splicing positions of the mask body (1) and the light guide strip (2), a splicing part (15) is arranged on one side of the light guide strip (2), the splicing part (15) extends from one end where the second splicing surface (14) is located to the direction of the mask body (1), the mask body (1) and the light guide strip (2) are integrally formed through a secondary injection molding process, so that the first splicing surface (13) and the second splicing surface (14) are bonded together, and the splicing part (15) and the mask body (1) are stacked and bonded together.
2. The automobile rearview mirror mask as claimed in claim 1, wherein the mask body (1) is provided with a plurality of protrusions (16) extending towards the direction of the splicing portion (15), the splicing portion (15) is provided with a plurality of bonding holes (17) for accommodating the protrusions (16), and when the mask body (1) and the light guide strip (2) are bonded together by two-time injection molding, the outer peripheral wall of each protrusion (16) is bonded together with the inner peripheral wall of the corresponding bonding hole (17).
3. The vehicle mirror mask according to claim 2, wherein the protrusion (16) and the adhesive hole (17) are both cylindrical, the diameter d of the protrusion (16) ranges from 1mm to 2mm, the thickness h of the splice (15) ranges from 3mm to 5mm, and the width a of the splice (15) ranges from 9mm to 12 mm.
4. An injection mold for producing the automobile rearview mirror mask as claimed in any one of claims 1 to 3, it is characterized by comprising an upper stacking template (3), a runner plate (4), a fixed die (5), a movable die (6), a stripping plate (7) and a lower stacking template (8) which are arranged from top to bottom in sequence, a first cavity (51) and a cavity assembly (52) are arranged in the fixed die (5), the cavity assembly (52) comprises a third cavity (521) and a second cavity (522), the movable mould (6) is provided with a rotating mechanism for driving the movable mould (6) to rotate and a lifting mechanism for driving the movable mould (6) to lift, two core assemblies (61) are arranged in the movable die (6), the two core assemblies (61) are respectively positioned below the first cavity (51) and the cavity assembly (52), and each core assembly (61) comprises a first core (611) and a second core (612); when the mold is closed, a first mold cavity for producing the mask body (1) with the bulge (16) is formed between the first mold cavity (51) and the first mold core (611) positioned below the first mold cavity, a second mold cavity for producing the light guide strip (2) with the splicing part (15) is formed between the second mold cavity (522) and the second mold core (612) positioned below the second mold cavity, and a third mold cavity for placing the mask body (1) with the bulge (16) is formed between the third mold cavity (521) and the first mold core (611) positioned below the third mold cavity; the fixed die (5) is also provided with a water channel (18), the water channel (18) is positioned above a die cavity used for producing the splicing part (15) in the second die cavity (522), and the water channel (18) is externally connected with a steam die temperature controller; be equipped with first runner (41) and second runner (42) on runner plate (4), it advances gluey runner (53) and second to be equipped with first gluey runner (53) and second on cover half (5), first advance gluey runner (53) intercommunication first runner (41) with first die cavity (51), the second advances gluey runner (54) intercommunication second runner (42) with second die cavity (522).
5. An injection mould according to claim 4, characterized in that the first cavity (51), the cavity assembly (52) and the core assembly (61) are of a mosaic construction.
6. An injection mold according to claim 4, wherein each core assembly (61) is provided with an insert (9).
7. An injection mould according to claim 4, characterized in that the movable mould (6) is provided with a slide (10) and a shovel (11), an inclined guide post (12) is arranged on the fixed die (5), the slide block (10) is arranged beside the core assembly (61) in a sliding manner, the mask body (1) comprises a tip-shaped arc surface (19), the sliding block (10) is provided with a forming surface (102) matched with the arc surface (19), the molding surface (102) is located beside the core assembly (61) and forms a complete core with the core assembly (61), the shovel machine (11) presses the sliding block (10), the sliding block (10) is provided with a first inclined through hole (101), the shovel machine (11) is provided with a second inclined through hole (111) which is coaxial with the first inclined through hole (101), when the die is closed, the inclined guide post (12) is inserted into the second inclined through hole (111) and the first inclined through hole (101) in sequence.
8. An injection mould according to claim 4, characterized in that the stripper plate (7) is an ejector plate, the stripper plate (7) being provided with a slanted roof (71).
9. An injection molding method of a cover for a rear-view mirror of an automobile, characterized in that the injection mold of any one of claims 4 to 8 is used, comprising the steps of:
s1, fixing the upper code template (3) and the lower code template (8) in an injection molding machine;
s2, preparing the material of the mask body (1) and the material of the light guide strip (2) after being dried by the dehumidifying dryer;
s3, placing the material of the mask body (1) into a first injection hopper of an injection molding machine, and placing the material of the light guide strip (2) into a second injection hopper of the injection molding machine;
s4, closing the fixed die (5) and the movable die (6), controlling the temperature of molten gel to be 260-270 ℃, controlling the injection pressure to be 90-100 MPA, and injecting the material of the mask body (1) into a first cavity (51) from an injection hopper through a first runner (41) and a first glue inlet runner (53) in sequence to form the mask body (1) with the protrusions (16);
s5, cooling for 25 to 30 seconds after injection molding;
s6, after cooling, the lifting mechanism drives the movable mold (6) to descend for mold opening, the rotating mechanism drives the movable mold (6) to rotate 180 degrees, the lifting mechanism drives the movable mold (6) to ascend to be matched with the fixed mold (5) again, and the mask body (1) is moved to a third cavity (521);
s7, injecting water vapor with the temperature of 100-120 ℃ into the water inlet channel (18) from the steam mold temperature controller, simultaneously injecting the material of the light guide strip (2) into the second cavity (522) from the second injection hopper through the second flow channel (42) and the second glue inlet flow channel (54) in sequence to form the light guide strip (2) with the splicing part (15), bonding the first splicing surface (13) and the second splicing surface (14) together, bonding the splicing part (15) and the mask body (1) together, and bonding the outer peripheral wall of each protrusion (16) and the inner peripheral wall of the corresponding bonding hole (17) together;
and S8, the lifting mechanism drives the movable die (6) to descend to open the die, the stripper plate (7) moves to strip the product, and finally the product is taken by hand or a mechanical arm.
10. The injection molding method of a mask for a rearview mirror of an automobile as claimed in claim 9, wherein the moisture weight ratio of the material of the mask body (1) and the material of the light guide strip (2) after drying in step S2 is less than 0.025%.
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| CN202111090427.1A CN113815179B (en) | 2021-09-17 | 2021-09-17 | Automobile rearview mirror mask, injection mold and injection molding method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111090427.1A CN113815179B (en) | 2021-09-17 | 2021-09-17 | Automobile rearview mirror mask, injection mold and injection molding method thereof |
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| CN113815179A true CN113815179A (en) | 2021-12-21 |
| CN113815179B CN113815179B (en) | 2023-05-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114228040A (en) * | 2021-12-28 | 2022-03-25 | 天津市众隆科技有限公司 | Manufacturing method of electric vehicle lamp by secondary glue pouring and injection molding |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101570156A (en) * | 2008-04-28 | 2009-11-04 | 上海干巷汽车镜（集团）有限公司 | Rearview mirror mask and preparation process thereof |
| CN201745129U (en) * | 2010-05-28 | 2011-02-16 | 浙江伟基模业有限公司 | Dual-color secondary injection mould of automobile head lamp shade |
| JP2011046000A (en) * | 2009-08-25 | 2011-03-10 | Mitsuba Corp | Method and apparatus for producing injection-molded article |
| CN104552795A (en) * | 2014-12-22 | 2015-04-29 | 昆山市鸿毅达精密模具有限公司 | Injection molding mold for automobile rearview mirror gasket |
| CN204378045U (en) * | 2015-01-28 | 2015-06-10 | 崔仲强 | A kind of modified slippers |
| CN210680535U (en) * | 2019-09-24 | 2020-06-05 | 上海良勤实业有限公司 | Mounting structure of automobile lamp shade |
| CN211139179U (en) * | 2019-11-08 | 2020-07-31 | 上汽通用汽车有限公司 | Automobile outer rear-view mirror and vehicle |
| CN212521077U (en) * | 2020-04-22 | 2021-02-12 | 东莞市盛道硅橡胶制品有限公司 | Kettle suction nozzle that concatenation intensity is high |
-
2021
- 2021-09-17 CN CN202111090427.1A patent/CN113815179B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101570156A (en) * | 2008-04-28 | 2009-11-04 | 上海干巷汽车镜（集团）有限公司 | Rearview mirror mask and preparation process thereof |
| JP2011046000A (en) * | 2009-08-25 | 2011-03-10 | Mitsuba Corp | Method and apparatus for producing injection-molded article |
| CN201745129U (en) * | 2010-05-28 | 2011-02-16 | 浙江伟基模业有限公司 | Dual-color secondary injection mould of automobile head lamp shade |
| CN104552795A (en) * | 2014-12-22 | 2015-04-29 | 昆山市鸿毅达精密模具有限公司 | Injection molding mold for automobile rearview mirror gasket |
| CN204378045U (en) * | 2015-01-28 | 2015-06-10 | 崔仲强 | A kind of modified slippers |
| CN210680535U (en) * | 2019-09-24 | 2020-06-05 | 上海良勤实业有限公司 | Mounting structure of automobile lamp shade |
| CN211139179U (en) * | 2019-11-08 | 2020-07-31 | 上汽通用汽车有限公司 | Automobile outer rear-view mirror and vehicle |
| CN212521077U (en) * | 2020-04-22 | 2021-02-12 | 东莞市盛道硅橡胶制品有限公司 | Kettle suction nozzle that concatenation intensity is high |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114228040A (en) * | 2021-12-28 | 2022-03-25 | 天津市众隆科技有限公司 | Manufacturing method of electric vehicle lamp by secondary glue pouring and injection molding |
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| CN113815179B (en) | 2023-05-02 |
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