CN114347378A - Double-color injection molding mold for automobile sealing strip - Google Patents
Double-color injection molding mold for automobile sealing strip Download PDFInfo
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- CN114347378A CN114347378A CN202111654363.3A CN202111654363A CN114347378A CN 114347378 A CN114347378 A CN 114347378A CN 202111654363 A CN202111654363 A CN 202111654363A CN 114347378 A CN114347378 A CN 114347378A
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 154
- 238000007789 sealing Methods 0.000 title claims abstract description 65
- 239000000758 substrate Substances 0.000 claims abstract description 72
- 238000000465 moulding Methods 0.000 claims abstract description 69
- 239000003292 glue Substances 0.000 claims abstract description 40
- 238000006073 displacement reaction Methods 0.000 claims abstract description 22
- 238000012856 packing Methods 0.000 claims abstract description 21
- 239000004033 plastic Substances 0.000 claims abstract description 18
- 229920003023 plastic Polymers 0.000 claims abstract description 18
- 238000002347 injection Methods 0.000 claims description 58
- 239000007924 injection Substances 0.000 claims description 58
- 238000007493 shaping process Methods 0.000 abstract description 10
- 230000001360 synchronised effect Effects 0.000 abstract description 5
- 239000002991 molded plastic Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 9
- 238000001816 cooling Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000001175 rotational moulding Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
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Abstract
The invention discloses a double-color injection molding die for automobile sealing strips, which comprises a first die holder and a second die holder, wherein a rotary base block for switching rotary displacement is arranged in the first die holder, two first substrate injection molding die cores are arranged on the rotary base block, a substrate injection molding part and a wrapping injection molding part are arranged on any first substrate injection molding die core, a second substrate injection molding die core and a wrapping injection molding die core are arranged on the second die holder, and a packing part is arranged on the second substrate injection molding die core. According to the invention, through the design of switching the ejection rotary displacement of the rotary base block, the high-efficiency smoothness and the matching stability of the switching of the double injection molding stations of the mold are met, and the matching precision of secondary molding is greatly improved. The requirement of synchronous forming of paired workpieces is met, and the relative forming precision of the paired workpieces is uniform. The cooperation design that possesses base plate portion of moulding plastics and parcel injecting glue portion satisfies homonymy duplex position shaping demand of moulding plastics, has reduced the mould cost, and the injecting glue shaping is more even simultaneously, has reduced the product and has moulded plastics deformation tolerance, and the product percent of pass obtains great promotion.
Description
Technical Field
The invention relates to a double-color injection molding mold of an automobile sealing strip, and belongs to the technical field of injection molds.
Background
An injection mold is a tool for producing plastic products and also a tool for giving the plastic products complete structure and precise dimensions. Injection molding is a process used to mass produce parts of some complex shapes. Specifically, the plastic melted by heating is injected into a mold cavity from an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification.
There is an automobile sealing strip at present, and it includes sealing strip base plate main part and sets up the protruding rib in sealing strip base plate main part, possesses post forming's parcel injection molding on this protruding rib, is equipped with a plurality of adaptation through-holes in the sealing strip base plate main part, and the parcel injection molding is two kinds of colours injection molding with sealing strip base plate main part.
The traditional injection molding mode adopts two sets of moulds, one of them set of injection mould is used for carrying out injection moulding to sealing strip base plate main part, then wraps up injection molding body injection moulding through one set of injection mould again, and so operating efficiency is lower, and the cost is higher, and in addition, sealing strip base plate main part has the deformation volume of shrinking to some extent after the shaping drawing of patterns, and during follow-up secondary injection moulding again, it appears carrying on tolerance easily, causes the condition emergence that can't the secondary mould plastics, and the disability rate is higher.
To this situation, the mold that can realize secondary injection molding has appeared among the prior art, it adopts the rotatory displacement of a die holder to realize the cooperation of two stations, realize the secondary injection molding of rotating with the platform, this type of injection mold adopts the whole rotatory counterpoint cooperation to the die carrier, die carrier rotary drive is very difficult, rotatory counterpoint stability is relatively poor, in addition, when secondary injection molding, its injecting glue mouth generally sets up in rotatory die carrier, and in order to dodge the work piece of rotational molding behind the drawing of patterns, generally adopt the mode of tip injecting glue, the tip injecting glue can cause the injecting glue homogeneity poor, the uncontrollable situation of shrinkage deformation variable after the shaping, lead to the work piece qualification rate lower.
Disclosure of Invention
The invention aims to solve the defects of the prior art, and provides a double-color injection molding mold for an automobile sealing strip, aiming at the problems that the traditional secondary injection molding mold frame is poor in integral rotation stability and the product yield is low due to the fact that the amount of cold shrinkage deformation is large due to end glue injection.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the double-color injection molding mold for the automobile sealing strip comprises a sealing strip substrate main body and a raised rib arranged on the sealing strip substrate main body, wherein the raised rib is provided with a secondary molding wrapping injection molding body, the sealing strip substrate main body is provided with a plurality of matching through holes,
the double-color injection molding mold comprises a first mold seat and a second mold seat which are relatively opened and closed,
a rotary base block with 180-degree rotary displacement switching is arranged in the first die holder, two first substrate injection molding die cores which are arranged at intervals are arranged on the rotary base block, a substrate injection molding part and a wrapping injection molding part are arranged on any first substrate injection molding die core,
be equipped with the second base plate injection mould benevolence and the parcel mould benevolence of moulding plastics that looks interval set up on the second die holder, be equipped with on the second base plate mould benevolence and be used for the shutoff the packing portion of parcel injection portion, the second base plate mould benevolence with form between the first base plate mould benevolence the mould cavity of moulding plastics of sealing strip base plate main part, pack the packing portion with form between the first base plate mould benevolence the mould cavity of moulding plastics of automobile sealing strip.
Preferably, the rotary base block has a linear reciprocating displacement and a self-rotation switching displacement in the mold opening and closing direction.
Preferably, two first injection molding cavities arranged in a mirror symmetry manner are arranged on the first substrate injection molding cavity, two matching molding cavities arranged in a mirror symmetry manner are arranged on the package injection molding cavity, two second injection molding cavities arranged in a mirror symmetry manner are arranged on the second substrate injection molding cavity, the first injection molding cavity and the second injection molding cavity form the injection molding cavity of the sealing strip substrate body, and the first injection molding cavity and the matching molding cavities form the injection molding cavity of the automobile sealing strip.
Preferably, the first injection molding cavity comprises a first sealing strip substrate molding cavity for molding the sealing strip substrate and a first raised rib molding cavity for molding the raised rib,
the second injection molding cavity comprises a second sealing strip substrate molding cavity matched with the first sealing strip substrate molding cavity and a second raised rib molding cavity matched with the first raised rib molding cavity,
the wrapping injection molding die core comprises a wrapping injection molding body forming cavity for forming the wrapping injection molding body.
Preferably, the substrate injection molding part comprises a plurality of substrate glue injection channels arranged on the first sealing strip substrate molding cavity.
Preferably, a central boss positioned between the two first injection molding cavities is arranged on the first substrate injection molding die core, the wrapping glue injection part comprises a central glue injection part arranged on the central boss, a plurality of connected glue channels distributed at intervals are arranged between the central glue injection part and any first injection molding cavity, and a packing strip groove is arranged on one side of the first glue injection molding cavity facing the central glue injection part,
the packing part is a packing matching sealing rib which is arranged on the second injection molding cavity and used for matching with the packing strip groove.
Preferably, a plurality of matched connecting through hole type columns used for forming the matched connecting through holes are arranged on the first sealing strip substrate forming cavity of the first injection molding cavity.
Preferably, the main body of the sealing strip base plate is provided with a flanging part, the flanging part is provided with a flanging through hole,
the first base plate injection mold core is provided with a flanging molding movable mold which corresponds to the first injection molding cavity one by one, and the flanging molding movable mold is provided with a flanging through hole type column for flanging through hole molding.
Preferably, the first substrate injection mold core, the second substrate injection mold core and the wrapping injection mold core are respectively provided with an alignment matching structure therebetween.
The invention has the following beneficial effects:
1. through the design of the ejecting rotary displacement switching of the rotary base block, the high-efficiency smoothness and the matching stability of the double-injection-molding station switching of the mold are met, and the secondary molding matching precision is greatly improved.
2. The requirement of synchronous forming of paired workpieces is met, and the relative forming precision of the paired workpieces is uniform.
3. The cooperation design that possesses base plate portion of moulding plastics and parcel injecting glue portion satisfies homonymy duplex position shaping demand of moulding plastics, has reduced the mould cost, and the injecting glue shaping is more even simultaneously, has reduced the product and has moulded plastics deformation tolerance, and the product percent of pass obtains great promotion.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural view of a first mold base in a two-color injection molding mold for an automotive weatherstrip according to the present invention.
FIG. 2 is a schematic structural view of a second mold base in the two-color injection molding mold for the automotive weather strip of the present invention.
FIG. 3 is a schematic structural diagram of a pair of weatherstrip substrate bodies according to the present invention.
FIG. 4 is another schematic view of the paired weatherstrip substrate bodies of the present invention.
FIG. 5 is a schematic view showing the structure of a pair of weather strips for automobiles according to the present invention.
Detailed Description
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the related invention are shown in the drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The invention provides a double-color injection molding mold of an automobile sealing strip, as shown in figures 3 to 5, an automobile sealing strip 10 comprises a sealing strip substrate main body 11 and a raised rib 12 arranged on the sealing strip substrate main body, wherein the raised rib 12 is provided with a secondary molding wrapping injection molding body 13, and the sealing strip substrate main body is provided with a plurality of matching through holes 14.
Specifically, the weather strip substrate body 11 and the raised ribs 12 are integrally injection molded, which is a prior art, and meets the requirement of integral injection molding through the design of the molding cavities which are mutually profiled, and the molding structure of the weather strip substrate body is shown in fig. 3 and 4.
The injection molded body 13 is a structure formed on the projecting ribs 12, and it is required to perform secondary injection molding, and generally, it has a difference in color and/or material, and it is shown in fig. 5 and 5 after molding.
In the traditional process, split-die injection molding or injection molding of a rotary die frame switching station is adopted, the split-die injection molding precision is poor, the scrappage probability is high, the matching of the die frame switching station has the defects of difficult displacement and the like, in addition, the relative precision of paired workpieces is difficult to guarantee, and the production efficiency is low.
Aiming at the defects of the traditional technology, the scheme provides a double-color injection molding mold shown in fig. 1 and 2, which comprises a first mold base 1 and a second mold base 2 which are provided with relative opening and closing displacement.
The first base plate injection molding die comprises a first base plate and a second base plate, wherein a rotary base block 3 for 180-degree rotary displacement switching is arranged in the first base seat, two first base plate injection molding die cores 4 arranged at intervals are arranged on the rotary base block 3, and a base plate injection molding part 5 and a wrapping injection molding part 6 are arranged on any first base plate injection molding die core 4.
The second base plate injection molding die core 7 and the wrapping injection molding die core 8 are arranged on the second die holder at intervals, the second base plate injection molding die core is provided with a packing part 9 used for packing the wrapping injection molding part, an injection molding cavity of the sealing strip base plate main body is formed between the second base plate injection molding die core and the first base plate injection molding die core, and an injection molding cavity of the automobile sealing strip is formed between the packing part and the first base plate injection molding die core.
The specific implementation process and principle description are as follows:
when injection molding is carried out, firstly, injection molding matching between the first substrate injection mold core 4 and the second substrate injection mold core 7 is carried out, after injection molding, an intermediate body integrating the sealing strip substrate main body 11 and the protruding ribs 12 is formed, the intermediate body is retained in the first substrate injection mold core 4, position degree switching of the two first substrate injection mold cores 4 is carried out along with the rotation of the base block 3, the first substrate injection mold core 4 with the intermediate body is switched to be matched with the wrapping injection mold core 8, corresponding finished product unloading is carried out after the station molding is completed, and then rotation circulation is carried out, so that the requirement of carrying out step molding in an efficient rotation switching mold cavity is met.
Through the rotatory displacement cooperation of rotatory base block 3 in first die holder 1, can play high-efficient rotatory counterpoint demand that switches, reduced rotatory activity time, satisfy the molding stability demand, specifically, after the midbody shaping, it does not lead to the fact secondary injection moulding under the condition of great cooling deformation volume, and the cohesion of moulding plastics relatively is reliable, and cooling deformation is synchronous after the integrated into one piece for twice deformation volume is controllable relatively, and the product percent of pass obtains great promotion.
It is elaborated that when the first substrate injection mold core 4 and the second substrate injection mold core 7 are spliced and matched, the packing part 9 can be isolated from the package glue injection part 6, so that the independent and reliable stability of the injection mold cavity of the sealing strip substrate main body is met, and when the secondary injection molding is performed, the package glue injection part 6 is communicated with the cavity of the package injection mold core 8, so that the package glue injection part is molded.
In one embodiment, the rotary base block 3 is provided with a linear reciprocating displacement and a self-rotating switching displacement in the mold opening and closing direction.
Specifically, a central connecting portion is provided between the two first substrate injection mold cores 4, a power source in transmission fit with the central connecting portion is provided in the first mold base, and the power source can realize ejection, rotation and retraction driving of the central connecting portion, so that the position switching function of the first substrate injection mold cores 4 is satisfied.
In general, a power source having a linear displacement and a rotary displacement is used, or two power sources combining a rotary displacement and a linear displacement may be used.
Of course, a ratchet wheel matching structure can be designed, and the automatic rotation can be realized only by adopting one jacking mechanism, specifically, the jacking mechanism and the central connecting part are matched in a relative rotation and back-pull type elastic mode, and in the jacking process, the automatic rotation and the automatic rotation can be realized when the jacking mechanism backs through the staggered matching mode of the ratchet wheel and the central connecting part, and the automatic rotation and the back-pull type elastic matching structure are similar to the telescopic switching structure of a ball pen.
The transmission structure which only needs to meet the requirement of resetting after jacking and rotating the rotating base block 3 is within the protection range of the scheme.
In an embodiment, two first injection molding cavities 40 are arranged on the first substrate injection mold core 4 in a mirror symmetry manner, two matching molding cavities are arranged on the package injection mold core 8 in a mirror symmetry manner, two second injection molding cavities are arranged on the second substrate injection mold core in a mirror symmetry manner, an injection molding cavity of the sealing strip substrate body is formed between the first injection molding cavity and the second injection molding cavities, and an injection molding cavity of the automobile sealing strip is formed between the first injection molding cavity and the matching molding cavities.
By the design, synchronous forming of the paired automobile sealing strips shown in the figures 3 to 5 is met, relative forming precision of the paired automobile sealing strips is met, and uniformity of workpieces is improved.
In one embodiment, the first injection molding cavity 40 includes a first weatherstrip substrate molding cavity 41 for weatherstrip substrate molding and a first raised bead molding cavity 42 for raised bead molding. The second injection molding cavity comprises a second sealing strip substrate molding cavity matched with the first sealing strip substrate molding cavity and a second protruding rib molding cavity matched with the first protruding rib molding cavity, and the wrapped injection molding die core comprises a wrapped injection molding body molding cavity used for wrapping injection molding body molding.
The structure is used for the specific molding and profiling requirements of the automobile sealing strip.
In one embodiment, the substrate injection part 5 includes a plurality of substrate glue injection passages 50 disposed on the first weatherstrip substrate molding cavity. Be equipped with the central boss that is located between two first injection moulding chambeies on the first base plate injection mould benevolence, parcel injecting glue portion 6 is equipped with a plurality of interval distribution's disjunctor glue way 62 including setting up central injecting glue portion 61 on central boss, central injecting glue portion and arbitrary first injection moulding chamber between to one side that first injecting glue shaping chamber orientation central injecting glue portion is equipped with packing strip groove 60. The packing part 9 is a packing matching sealing rib which is arranged on the second injection molding cavity and is used for matching with the packing strip groove.
The specific implementation process and principle description are as follows:
conventionally, the glue injection part is generally arranged on the first die holder and the second die holder, the first injection molding is realized through the glue injection part on the first die holder, and the second injection molding is realized through the glue injection part on the second die holder.
Therefore, the runner design is very complicated, a double-side supply structure is needed, the mold cost is undoubtedly increased, in addition, the glue injection points of the runner and the injection point are generally supplied by the end sides, and the deformation amount of the injection-molded product is very large.
In the present case, adopt the mode of base plate injecting glue passageway 50 to utilize and seal the design that separates portion 9 and seal strip groove 60, form first injection moulding, midbody after this injection moulding is located the die cavity internal displacement, it is itself by the die cavity of moulding plastics deformation control, back end rotation back secondary injection moulding again utilizes a plurality of disjunctor glue ways to realize the even injection moulding of the post injection moulding body between the work piece in pairs, make whole deformation volume obtain control, it is obviously lower with the mode cost of die holder design injection moulding supply in addition.
In one embodiment, the first molding cavity 40 has a plurality of through-hole pillars for forming through-holes.
The concrete forming specification requirement of the matching through hole is met.
In one embodiment, the main body of the sealing strip base plate is provided with a flanging part, the flanging part is provided with flanging through holes, the first base plate injection mold core is provided with flanging forming movable molds 400 corresponding to any first injection molding cavities one by one, and the flanging forming movable molds are provided with flanging through hole type columns for flanging through hole forming.
Thus meeting the molding requirements of the specific flanging part and the flanging through hole.
In one embodiment, the first substrate injection mold core, the second substrate injection mold core and the wrapping injection mold core are respectively provided with an alignment matching structure.
The marks of the first die holder and the second die holder are omitted in the attached drawings, namely the traditional die assembly precision is matched by the first die holder and the second die holder.
Through the above description, the double-color injection molding mold for the automobile sealing strip, disclosed by the invention, has the advantages that the high-efficiency smoothness and the matching stability of the double-injection molding station switching of the mold are met through the ejection rotary displacement switching design of the rotary base block, and the secondary molding matching precision is greatly improved. The requirement of synchronous forming of paired workpieces is met, and the relative forming precision of the paired workpieces is uniform. The cooperation design that possesses base plate portion of moulding plastics and parcel injecting glue portion satisfies homonymy duplex position shaping demand of moulding plastics, has reduced the mould cost, and the injecting glue shaping is more even simultaneously, has reduced the product and has moulded plastics deformation tolerance, and the product percent of pass obtains great promotion.
The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (9)
1. Double-colored injection moulding mould of car sealing strip, the car sealing strip includes sealing strip base plate main part and sets up the protruding rib in sealing strip base plate main part, the parcel injection molding body that possesses the post forming on the protruding rib, be equipped with a plurality of through-holes that connect, its characterized in that of joining in marriage in the sealing strip base plate main part:
the double-color injection molding mold comprises a first mold seat and a second mold seat which are relatively opened and closed,
a rotary base block with 180-degree rotary displacement switching is arranged in the first die holder, two first substrate injection molding die cores which are arranged at intervals are arranged on the rotary base block, a substrate injection molding part and a wrapping injection molding part are arranged on any first substrate injection molding die core,
be equipped with the second base plate injection mould benevolence and the parcel mould benevolence of moulding plastics that looks interval set up on the second die holder, be equipped with on the second base plate mould benevolence and be used for the shutoff the packing portion of parcel injection portion, the second base plate mould benevolence with form between the first base plate mould benevolence the mould cavity of moulding plastics of sealing strip base plate main part, pack the packing portion with form between the first base plate mould benevolence the mould cavity of moulding plastics of automobile sealing strip.
2. The two-color injection molding mold for the automobile weather strip according to claim 1, wherein:
the rotary base block has a linear reciprocating displacement and a self-rotation switching displacement in the mold opening and closing direction.
3. The two-color injection molding mold for the automobile weather strip according to claim 1, wherein:
the automobile sealing strip injection molding device is characterized in that two first injection molding cavities are arranged on the first substrate injection molding cavity in a mirror symmetry mode, two matching molding cavities are arranged on the package injection molding cavity in a mirror symmetry mode, two second injection molding cavities are arranged on the second substrate injection molding cavity in a mirror symmetry mode, the first injection molding cavities and the second injection molding cavities form the injection molding cavities of the sealing strip substrate body, and the first injection molding cavities and the matching molding cavities form the injection molding cavities of the automobile sealing strip.
4. The two-color injection molding mold for the automobile weather strip according to claim 3, wherein:
the first injection molding cavity comprises a first sealing strip substrate molding cavity for molding the sealing strip substrate and a first protruding rib molding cavity for molding the protruding rib,
the second injection molding cavity comprises a second sealing strip substrate molding cavity matched with the first sealing strip substrate molding cavity and a second raised rib molding cavity matched with the first raised rib molding cavity,
the wrapping injection molding die core comprises a wrapping injection molding body forming cavity for forming the wrapping injection molding body.
5. The two-color injection molding mold for the automobile weather strip according to claim 4, wherein:
the substrate injection molding part comprises a plurality of substrate injection channels arranged on the first sealing strip substrate molding cavity.
6. The two-color injection molding mold for the automobile weather strip according to claim 4, wherein:
the first substrate injection mold core is provided with a central boss positioned between the two first injection molding cavities, the wrapping glue injection part comprises a central glue injection part arranged on the central boss, a plurality of connected glue channels distributed at intervals are arranged between the central glue injection part and any first injection molding cavity, and one side of the first glue injection molding cavity facing the central glue injection part is provided with a packing strip groove,
the packing part is a packing matching sealing rib which is arranged on the second injection molding cavity and used for matching with the packing strip groove.
7. The two-color injection molding mold for the automobile weather strip according to claim 4, wherein:
and a plurality of matched connecting through hole type columns used for forming the matched connecting through holes are arranged on the first sealing strip substrate forming cavity of the first injection molding cavity.
8. The two-color injection molding mold for the automobile weather strip according to claim 4, wherein:
the main body of the sealing strip base plate is provided with a flanging part, the flanging part is provided with a flanging through hole,
the first base plate injection mold core is provided with a flanging molding movable mold which corresponds to the first injection molding cavity one by one, and the flanging molding movable mold is provided with a flanging through hole type column for flanging through hole molding.
9. The two-color injection molding mold for the automobile weather strip according to claim 1, wherein:
and the first substrate injection molding die core, the second substrate injection molding die core and the wrapping injection molding die core are respectively provided with an alignment matching structure.
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| CN202111654363.3A CN114347378B (en) | 2021-12-31 | 2021-12-31 | Double-color injection molding mold for automobile sealing strip |
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|---|---|---|---|
| CN202111654363.3A CN114347378B (en) | 2021-12-31 | 2021-12-31 | Double-color injection molding mold for automobile sealing strip |
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| CN114347378A true CN114347378A (en) | 2022-04-15 |
| CN114347378B CN114347378B (en) | 2023-09-26 |
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