CN112829187B - In-mold compression two-color injection mold - Google Patents
In-mold compression two-color injection mold Download PDFInfo
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- CN112829187B CN112829187B CN202011615648.1A CN202011615648A CN112829187B CN 112829187 B CN112829187 B CN 112829187B CN 202011615648 A CN202011615648 A CN 202011615648A CN 112829187 B CN112829187 B CN 112829187B
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- mold
- main insert
- injection molding
- core
- ejector
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- 238000002347 injection Methods 0.000 title claims abstract description 27
- 239000007924 injection Substances 0.000 title claims abstract description 27
- 230000006835 compression Effects 0.000 title claims abstract description 14
- 238000007906 compression Methods 0.000 title claims abstract description 14
- 238000001746 injection moulding Methods 0.000 claims abstract description 58
- 230000007246 mechanism Effects 0.000 claims abstract description 38
- 238000005034 decoration Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 7
- 238000000465 moulding Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 239000003292 glue Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920006834 PC+ABS Polymers 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1671—Making multilayered or multicoloured articles with an insert
-
- 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
- B29C45/0046—Details relating to the filling pattern or flow paths or flow characteristics of moulding material in the mould cavity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B29C45/37—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings
- B29C45/376—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings adjustable
-
- 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
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2055/00—Use of specific polymers obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of main groups B29K2023/00 - B29K2049/00, e.g. having a vinyl group, as moulding material
- B29K2055/02—ABS polymers, i.e. acrylonitrile-butadiene-styrene polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2069/00—Use of PC, i.e. polycarbonates or derivatives thereof, as moulding material
-
- 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
- B29L2031/3041—Trim panels
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
本发明公开一种模内压缩双色注塑模具，包括前模、后模、第一主镶、第二主镶、主镶驱动机构及顶出机构，前模与后模相对布置，第一主镶和第二主镶相邻设在前模内，且与前模滑动配合。第一主镶和第二主镶靠近后模的一侧，分别设有一个前模型腔。后模靠近前模的一侧，具有第一后模型芯和第二后模型芯，第一、第二后模型芯相邻间隔布置。第一主镶和第二主镶背离后模的一侧，均对称设有两个所述主镶驱动机构，各主镶驱动机构带动对应的主镶沿开模方向与前模相对滑动。本发明通过改变主镶的位置而扩大注塑腔的容积，降低对注塑力的要求，注塑完成后，主镶复位过程中实现流料快速充型，实现产品件成型密度高，降低对注塑机的要求，提高了效率。
The present invention discloses an in-mold compression double-color injection mold, comprising a front mold, a rear mold, a first main insert, a second main insert, a main insert driving mechanism and an ejection mechanism. The front mold and the rear mold are arranged oppositely, and the first main insert and the second main insert are adjacently arranged in the front mold and slidably cooperate with the front mold. A front mold cavity is respectively provided on the side of the first main insert and the second main insert close to the rear mold. A first rear mold core and a second rear mold core are provided on the side of the rear mold close to the front mold, and the first and second rear mold cores are adjacently arranged at intervals. Two main insert driving mechanisms are symmetrically provided on the side of the first main insert and the second main insert away from the rear mold, and each main insert driving mechanism drives the corresponding main insert to slide relative to the front mold along the mold opening direction. The present invention expands the volume of the injection cavity by changing the position of the main insert, reduces the requirement for injection force, and realizes rapid filling of the flow material during the main insert resetting process after the injection is completed, realizes high molding density of the product, reduces the requirement for the injection molding machine, and improves efficiency.
Description
Technical Field
The invention relates to the technical field of mold manufacturing, in particular to an in-mold compression double-color injection mold.
Background
The bicolor texture ornaments in the automobile cab are bicolor structures, the bicolor structures are respectively required to be made of two injection molding materials, the PC material is injected for the first time, and the PC+ABS material is injected for the second time, and because the thickness of the two materials is thinner, the product piece after injection molding is required to be high in density, so that the injection molding process is required to be high in injection molding force, the material flowing and filling capacity is poor in the injection molding process, the flow speed is low, the high density requirement of the product piece cannot be met after molding, and the production efficiency is low. The existing injection molding machine generally does not have the required injection molding force, and a large injection molding machine is needed to be used, so that the equipment investment cost is increased. Accordingly, there is a need in the art for further improvements and improvements.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide an in-mold compression double-color injection mold, which solves the problems that the density of a double-color product piece is high, the material flowing and filling capacity is poor, the flow speed is low, the high density requirement of the product piece cannot be met after molding, and the production efficiency is low.
In order to solve the technical problems, the invention adopts the following technical scheme:
The utility model provides an in-mold compression double-colored injection mold, includes that front mould, rear mould, first owner insert, second owner insert, owner insert actuating mechanism and ejection mechanism, front mould and rear mould relative arrangement, first owner insert adjacent interval activity setting in the front mould with the second owner insert, and with front mould sliding fit.
One side of the first main insert and one side of the second main insert, which are close to the rear mold, are respectively provided with a front mold cavity.
The rear mold is provided with a first rear mold core and a second rear mold core, which are adjacently arranged at intervals, at one side close to the front mold.
Two main driving mechanisms are symmetrically arranged on one side of the first main insert and one side of the second main insert, which are away from the rear die, and each main driving mechanism drives the corresponding main insert to slide relative to the front die along the die opening direction.
Further, in the mold closing state, the first rear mold core can be respectively matched with the two front mold cavities to form a first injection molding cavity, a first injection molding piece is molded in the first injection molding cavity, and the first injection molding piece is left in the front mold cavity.
The second back mold core can be matched with the two front mold cavities and the first injection molding piece left in the front mold cavities respectively to form a second injection molding cavity, and the second injection molding piece is molded in the second injection molding cavity.
Further, the outer side wall of the first rear mold core and the inner side walls of the front mold cavities are matched to form a parting surface of the first injection molding cavity.
The outer side wall of the second rear mold core and the inner side walls of the front mold cavities are matched to form a parting surface of the second injection molding cavity.
Further, any position of the outer side wall of the first back mold core and any position of the outer side wall of the second back mold core are parallel to the corresponding position of the inner side wall of each front mold cavity.
The included angle between the outer side wall of the front mold cavity and the front mold opening direction is alpha, and alpha is more than or equal to 1.8 degrees and less than or equal to 2 degrees.
Further, the main driving mechanism of inlaying includes T type guide rail, loose core and actuating cylinder, T type guide rail is fixed in corresponding main inlaying, and the spout direction of T type guide rail is arranged with the relative slope of die sinking direction.
The core pulling device is arranged on the front die and is in sliding fit with the front die, and meanwhile, the core pulling device extends into a sliding groove of the T-shaped guide rail to be in sliding fit with the T-shaped guide rail.
The driving oil cylinders are arranged on the front die through oil cylinder supports, the end parts of the piston rods of the driving oil cylinders are fixedly connected with the core pulling, and the two driving oil cylinders on the same main insert synchronously stretch and retract to drive the main insert to move relative to the front die along the die opening direction.
Further, one side of each loose core is provided with a group of travel switches, and each group of travel switches comprises two travel switches which are oppositely arranged at intervals along the loose core moving direction.
Each loose core is provided with a travel rod, one end of the travel rod is fixedly connected with the loose core, and the other end of the travel rod extends between two travel switches corresponding to the loose core.
Further, the two ejection mechanisms are respectively a first ejection mechanism and a second ejection mechanism, and the two ejection mechanisms are arranged on the rear die.
Further, the first ejection mechanism corresponds to the first back mold core in position and comprises a first ejector pin plate, a first ejector pin group and a first ejection cylinder, and the first ejector pin plate is located on one side of the back mold, which is away from the front mold.
The first ejector cylinder is arranged on one side of the rear die, and a piston rod of the first ejector cylinder drives the first ejector plate to move along the die opening direction.
The first ejector rod group comprises a plurality of first ejector rods, one ends of the first ejector rods are fixed on the first ejector pin plate, the other ends of the first ejector rods extend into the rear mould and are in sliding fit with the rear mould, and inclined ejector blocks are arranged on part of the first ejector rods.
Further, the second ejection mechanism corresponds to the second rear mold core in position and comprises a second ejector pin plate, a second ejector pin group and a second ejection cylinder, and the second ejector pin plate is positioned on one side of the rear mold, which is away from the front mold.
The second ejector cylinder is arranged on one side of the rear die, and a piston rod of the second ejector cylinder drives the second ejector plate to move along the die opening direction.
The second ejector rod group comprises a plurality of second ejector rods, one ends of the second ejector rods are fixed on the first ejector pin plate, and the other ends of the second ejector rods extend into the rear die and are in sliding fit with the rear die.
Further, the first main insert and the second main insert are in sliding fit with the front die along the die opening direction.
By adopting the technical scheme, the injection molding machine has the beneficial effects that the first main insert and the second main insert are arranged in the front mold, the volume of the injection molding cavity is enlarged by changing the position of the main insert in the injection molding process, the requirement on injection molding force is reduced, after injection molding is finished, quick filling of the material is realized in the main insert resetting process, the molding density of a product piece is high, the requirement on the injection molding machine is reduced, and the efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of an in-mold compression two-shot injection mold according to the present invention.
Fig. 2 is a schematic structural view of the stationary mold and its related parts of the present invention.
Fig. 3 is a schematic structural view of the movable mold and related components of the present invention.
Fig. 4 is a schematic cross-sectional view of a portion of the present invention showing the first main insert and the main insert drive mechanism.
Fig. 5 is a schematic view of the first and second main inserts and the main insert driving mechanism according to the present invention.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
Referring to fig. 1 to 5, an in-mold compression double-shot injection mold is a flip-chip mold, and comprises a front mold 1, a rear mold 2, a first main insert 3, a second main insert 4, a main insert driving mechanism 5 and an ejection mechanism, wherein the front mold 1 and the rear mold 2 are oppositely arranged in the forward direction and are all arranged on an injection molding machine, the front mold 1 is a movable mold, the rear mold 2 is a fixed mold, the injection molding machine drives the front mold 1 to move, and the front mold and the rear mold 2 are opened and closed. The two ejection mechanisms are respectively a first ejection mechanism 6 and a second ejection mechanism 7, and the two ejection mechanisms are arranged on the rear die 2.
The first main insert 3 and the second main insert 4 are adjacently and movably arranged in the front die 1 at intervals and are in sliding fit with the front die 1 along the die opening direction. One side of the first main insert 3 and one side of the second main insert 4, which are close to the rear mold 2, are respectively provided with a front mold cavity 31, and the two front mold cavities 31 have the same structure and are centrally symmetrical. The rear mold 2 is provided with a first rear mold core 21 and a second rear mold core 22 on one side close to the front mold 1, and the first rear mold core 22 and the second rear mold core 22 are adjacently arranged at intervals and are in an integral structure with the rear mold 2. The hot runner and the pouring gate of the injection mold are both positioned on the rear mold 2.
In the mold-closed state, the first rear mold core 21 may be respectively matched with the two front mold cavities 31 to form a first injection cavity, and a first injection molding piece is molded in the first injection cavity. After the injection of the first injection molding part is completed, the front mold 1 and the rear mold 2 are opened, and the first injection molding part is left in the front mold cavity 31. The outer side wall of the first rear mold core 21 and the inner side walls of the front mold cavities 31 are matched to form a parting surface of the first injection molding cavity, and in the injection molding process, the parting surface seals the first injection molding cavity.
The back mold 2 can rotate 180 degrees relative to the front mold and then be clamped again, and the second back mold core 22 can be matched with the two front mold cavities 31 and the first injection molding piece left in the front mold cavities 31 respectively to form a second injection molding cavity, and the second injection molding piece is molded in the second injection molding cavity. The outer side wall of the second rear mold core 22 and the inner side walls of the front mold cavities 31 cooperate to form a parting surface of a second injection molding cavity, and in the injection molding process, the parting surface realizes glue sealing for the second injection molding cavity, and the second injection molding part and the first injection molding part form a bicolor texture ornament with an integrated structure.
Any position of the outer side walls of the first and second rear mold cores 22 is parallel to the corresponding position of the inner side walls of each front mold cavity 31. The angle alpha between the outer side wall of the front mold cavity 31 and the opening direction of the front mold 1 is equal to or more than 1 DEG and equal to or less than 2 deg.
Two main insert driving mechanisms 5 are symmetrically arranged on one sides of the first main insert 3 and the second main insert 4, which are away from the rear die 2, and each main insert driving mechanism 5 drives the corresponding main insert to slide relative to the front die 1 along the die opening direction. The main insert driving mechanism 5 comprises a T-shaped guide rail 51, a core pulling 52 and a driving oil cylinder 53, wherein each T-shaped guide rail 51 is fixed on the corresponding main insert, and the chute direction of the T-shaped guide rail 51 is obliquely arranged relative to the die opening direction.
The core pulling 52 is arranged on the front die 1 and is in sliding fit with the front die 1, the movement direction of the core pulling 52 relative to the front die 1 is vertical to the die opening direction, meanwhile, the core pulling 52 extends into a sliding groove of the T-shaped guide rail 51 to be in sliding fit with the T-shaped guide rail 51, and an included angle between the sliding groove direction of the T-shaped guide rail 51 and the movement direction of the core pulling 52 is 3 degrees. The driving oil cylinders 53 are arranged on the front die 1 through driving oil cylinder brackets 531, the end parts of the piston rods of the driving oil cylinders 53 are fixedly connected with the core pulling 52, and the two driving oil cylinders 53 on the same main insert synchronously stretch and retract to drive the main insert to move relative to the front die 1 along the die opening direction, so that the size of the first injection molding cavity or the second injection molding cavity is changed.
Specifically, after the front mould 1 and the rear mould 2 are assembled, the first main insert 3 or the second main insert 4 moves by 1mm relative to the front mould 1 along the mould opening direction under the driving of the core pulling 52, the thickness of the first or second injection cavity is increased by 1mm, a gap of 0.017mm can be generated on the parting surface, glue leakage can not be generated on the gap of 0.017mm, the glue injection pressure is small in the injection process, and after the glue injection is completed, the core pulling 52 drives the first main insert 3 or the second main insert 4 to return, and the parting surface is attached.
One side of each core pulling 52 is provided with a set of travel switches 54, each set of travel switches 54 comprises two travel switches 54 which are oppositely arranged at intervals along the movement direction of the core pulling 52, and each travel switch 54 is fixedly arranged on the front die 1. Each core pulling 52 is provided with a travel rod 55, one end of the travel rod 55 is fixedly connected with the core pulling 52, and the other end of the travel rod extends between two travel switches 54 corresponding to the core pulling 52. The movement of the core pulling 52 drives the travel rod 55 to move together, and the travel rod 55 cooperates with the corresponding two travel switches 54 to control the travel of the core pulling 52.
The first ejection mechanism 6 corresponds to the first rear mold core 21 in position and comprises a first ejector plate 61, a first ejector rod group and a first ejection cylinder 62, wherein the first ejector plate 61 is positioned on one side of the rear mold 2, which is away from the front mold 1.A first ejector cylinder 62 is mounted on one side of the rear mold 2, and its piston rod drives the first ejector plate 61 to move in the mold opening direction. The first ejector rod group comprises a plurality of first ejector rods 63, one end of each first ejector rod 63 is fixed on the first ejector pin plate 61, the other end of each first ejector rod 63 extends into the rear die 2 and is in sliding fit with the rear die 2, and inclined ejector blocks 64 are arranged on part of the first ejector rods 63.
The second ejection mechanism 7 corresponds to the second back mold core 22 in position, and comprises a second ejector plate 71, a second ejector rod group and a second ejection cylinder 72, wherein the second ejector plate 71 is positioned on one side of the back mold 2 away from the front mold 1. A second ejector cylinder 72 is mounted on one side of the rear mold 2, and its piston rod drives the second ejector plate 71 to move in the mold opening direction. The second ejector rod group comprises a plurality of second ejector rods 73, one end of each second ejector rod 73 is fixed on the first ejector pin plate 61, and the other end of each second ejector rod 73 extends into the rear mold 2 and is in sliding fit with the rear mold 2.
The parts not described in the invention can be realized by adopting or referring to the prior art.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
It should be understood that the above description is not intended to limit the invention to the particular embodiments disclosed, but to limit the invention to the particular embodiments disclosed, and that the invention is not limited to the particular embodiments disclosed, but is intended to cover modifications, adaptations, additions and alternatives falling within the spirit and scope of the invention.
Claims (6)
1. The in-mold compression double-color injection mold is characterized by comprising a front mold, a rear mold, a first main insert, a second main insert, a main insert driving mechanism and an ejection mechanism, wherein the front mold and the rear mold are oppositely arranged, and the first main insert and the second main insert are adjacently and movably arranged in the front mold at intervals;
One side of the first main insert and one side of the second main insert, which are close to the rear mold, are respectively provided with a front mold cavity;
the rear mold is provided with a first rear mold core and a second rear mold core, and the first rear mold core and the second rear mold core are adjacently arranged at intervals;
Two main insert driving mechanisms are symmetrically arranged on one side of the first main insert and one side of the second main insert, which are away from the rear die, and each main insert driving mechanism drives the corresponding main insert to slide relative to the front die along the die opening direction;
the main insert driving mechanism comprises a T-shaped guide rail, a core pulling and driving oil cylinder, wherein the T-shaped guide rail is fixed on the corresponding main insert, and the sliding groove direction of the T-shaped guide rail is obliquely arranged relative to the die opening direction;
The core pulling device is arranged on the front die and is in sliding fit with the front die, and meanwhile, the core pulling device extends into a sliding groove of the T-shaped guide rail to be in sliding fit with the T-shaped guide rail;
The driving oil cylinders are arranged on the front die through oil cylinder supports, the end parts of the piston rods of the driving oil cylinders are fixedly connected with the core pulling, and two driving oil cylinders on the same main insert synchronously stretch and contract to drive the main insert to move relative to the front die along the die opening direction;
the first main insert and the second main insert are in sliding fit with the front die along the die opening direction;
In a mold closing state, the first rear mold core can be respectively matched with the two front mold cavities to form a first injection cavity, a first injection molding piece is molded in the first injection cavity, and the first injection molding piece is left in the front mold cavity; the outer side wall of the first rear mold core and the inner side walls of the front mold cavities are matched to form a parting surface of the first injection molding cavity, and in the injection molding process, the parting surface seals the first injection molding cavity;
the rear mold can rotate 180 degrees relative to the front mold and then be assembled again, the second rear mold core can be matched with the two front mold cavities and the first injection molding piece left in the front mold cavities to form a second injection molding cavity, the second injection molding piece is formed in the second injection molding cavity, the outer side wall of the second rear mold core is matched with the inner side wall of each front mold cavity to form a parting surface of the second injection molding cavity, in the injection molding process, the parting surface is sealed with the second injection molding cavity, and the second injection molding piece and the first injection molding piece form a bicolor texture decoration piece of an integral structure.
2. The in-mold compression bicolor injection mold of claim 1 wherein any of the outer side walls of the first and second rear mold cores is parallel to the corresponding position of the inner side wall of each front mold cavity;
the included angle between the outer side wall of the front mold cavity and the front mold opening direction is alpha, and alpha is more than or equal to 1.8 degrees and less than or equal to 2 degrees.
3. The in-mold compression double-color injection mold according to claim 1, wherein one side of each loose core is provided with a group of travel switches, and each group of travel switches comprises two travel switches which are oppositely arranged at intervals along the movement direction of the loose core;
Each loose core is provided with a travel rod, one end of the travel rod is fixedly connected with the loose core, and the other end of the travel rod extends between two travel switches corresponding to the loose core.
4. The in-mold compression bicolor injection mold of claim 1 wherein the number of the ejection mechanisms is two, namely a first ejection mechanism and a second ejection mechanism, both of which are arranged on the back mold.
5. The in-mold compression bicolor injection mold of claim 4, wherein the first ejection mechanism corresponds to the first back mold core and comprises a first ejector plate, a first ejector pin group and a first ejection cylinder, wherein the first ejector plate is positioned on one side of the back mold, which is away from the front mold;
the first ejection cylinder is arranged on one side of the rear die, and a piston rod of the first ejection cylinder drives the first ejector plate to move along the die opening direction;
The first ejector rod group comprises a plurality of first ejector rods, one ends of the first ejector rods are fixed on the first ejector pin plate, the other ends of the first ejector rods extend into the rear mould and are in sliding fit with the rear mould, and inclined ejector blocks are arranged on part of the first ejector rods.
6. The in-mold compression bicolor injection mold of claim 4, wherein the second ejection mechanism corresponds to the second back mold core and comprises a second ejector plate, a second ejector pin group and a second ejection cylinder, wherein the second ejector plate is positioned on one side of the back mold away from the front mold;
The second ejection oil cylinder is arranged at one side of the rear die, and a piston rod of the second ejection oil cylinder drives the second ejector plate to move along the die opening direction;
The second ejector rod group comprises a plurality of second ejector rods, one ends of the second ejector rods are fixed on the first ejector pin plate, and the other ends of the second ejector rods extend into the rear die and are in sliding fit with the rear die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011615648.1A CN112829187B (en) | 2020-12-31 | 2020-12-31 | In-mold compression two-color injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011615648.1A CN112829187B (en) | 2020-12-31 | 2020-12-31 | In-mold compression two-color injection mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112829187A CN112829187A (en) | 2021-05-25 |
| CN112829187B true CN112829187B (en) | 2025-04-25 |
Family
ID=75925572
Family Applications (1)
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| CN211279449U (en) * | 2019-11-15 | 2020-08-18 | 台州市黄岩宁光模具有限公司 | Multi-specification detachable auxiliary forming insert block mechanism for compression molding die |
| CN111619071A (en) * | 2020-06-03 | 2020-09-04 | 常源科技（天津）有限公司 | Floating core-pulling type double-color injection mold |
| CN214266409U (en) * | 2020-12-31 | 2021-09-24 | 青岛海泰科模具有限公司 | Compression double-shot injection mold in mould |
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| JP5535810B2 (en) * | 2010-07-28 | 2014-07-02 | ダイキョーニシカワ株式会社 | Mold for two-color molded panel and method for molding two-color molded panel using the mold |
| CN203637087U (en) * | 2013-08-15 | 2014-06-11 | 青岛海尔模具有限公司 | Double-colored decorative strip injection mould |
| CN109702964B (en) * | 2019-03-08 | 2024-07-16 | 青岛海泰科模具有限公司 | Double-color injection mold for automobile luggage rack |
| CN110978419B (en) * | 2019-12-30 | 2025-04-25 | 青岛海泰科模具有限公司 | A rotating slider structure and a two-color injection mold |
| CN110919990B (en) * | 2019-12-30 | 2024-09-10 | 青岛海泰科模具有限公司 | Internal-drawing type double-color injection mold |
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| CN211279449U (en) * | 2019-11-15 | 2020-08-18 | 台州市黄岩宁光模具有限公司 | Multi-specification detachable auxiliary forming insert block mechanism for compression molding die |
| CN111619071A (en) * | 2020-06-03 | 2020-09-04 | 常源科技（天津）有限公司 | Floating core-pulling type double-color injection mold |
| CN214266409U (en) * | 2020-12-31 | 2021-09-24 | 青岛海泰科模具有限公司 | Compression double-shot injection mold in mould |
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