CN220499810U - Double-colored injection mold - Google Patents
Double-colored injection mold Download PDFInfo
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- CN220499810U CN220499810U CN202321871465.5U CN202321871465U CN220499810U CN 220499810 U CN220499810 U CN 220499810U CN 202321871465 U CN202321871465 U CN 202321871465U CN 220499810 U CN220499810 U CN 220499810U
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- 238000002347 injection Methods 0.000 title claims abstract description 35
- 239000007924 injection Substances 0.000 title claims abstract description 35
- 238000000465 moulding Methods 0.000 claims abstract description 52
- 239000011265 semifinished product Substances 0.000 claims abstract description 24
- 239000000047 product Substances 0.000 claims abstract description 21
- 238000001746 injection moulding Methods 0.000 claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 230000000712 assembly Effects 0.000 claims description 13
- 238000000429 assembly Methods 0.000 claims description 13
- 230000006872 improvement Effects 0.000 description 7
- 239000003292 glue Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model provides a double-color injection mold, which relates to the technical field of injection molds and comprises a fixed mold, a movable mold, a rotating mechanism and an ejection mechanism; the fixed die is provided with a first cavity and a second cavity, and respectively forms a first molding cavity and a second molding cavity with two cores on the movable die, wherein a first runner is matched with a first injection nozzle at the top of the fixed die to be used for injection molding of a semi-finished product into the first molding cavity, and a second runner is matched with a second injection nozzle at the side surface of the fixed die to be used for injection molding of a finished product into the second molding cavity; the rotating mechanism enables the mold core where the semi-finished product is positioned to rotate along with the movable mold to form a second molding cavity with the second molding cavity; simultaneously, the other core rotates to form a first molding cavity with the first molding cavity; the ejection mechanism comprises an ejection assembly and a pushing assembly, and is used for driving the ejection assembly to eject the finished product in the second molding cavity. Thereby solve the problem that current double-colored injection mold structure is difficult to apply to miniature mould.
Description
Technical Field
The utility model relates to the technical field of injection molds, in particular to a double-color injection mold.
Background
The existing double-color injection mold structure is mostly as a double-color injection mold, an injection molding machine and a double-color injection molding process disclosed in China patent CN201010143084.6, and comprises a first front mold, a rear mold and a second front mold which are arranged in sequence in a opposite mode, wherein the rear mold comprises a first rear mold and a second rear mold which are identical in structure, and the first rear mold and the second rear mold are connected together back to back; the first rear die and the first front die are matched and then are used for injection molding to form a semi-finished product; the rear die horizontally rotates 180 degrees to enable the first rear die and the second front die to be clamped, then the first rear die and the second front die are used for injection molding to form a finished product on the basis of the semi-finished product, and meanwhile the second rear die and the first front die are clamped to be used for injection molding to form the next semi-finished product. The mould structure is characterized in that the stroke between the first front mould and the second front mould and the stroke between the first rear mould and the second rear mould are longer, and the mould structure on two sides leads to large volume of the mould, which is difficult to apply to micro moulds. The miniature mould refers to a special miniature precise injection mould with a panel less than 120 x 180, and has the characteristics of low development cost and quick period.
Disclosure of Invention
The utility model discloses a double-shot injection mold, which aims at solving the problem that the existing double-shot injection mold structure is difficult to apply to a micro-mold.
The utility model adopts the following scheme:
a double-color injection mold comprises a fixed mold, a movable mold, a rotating mechanism and an ejection mechanism; the fixed die is provided with a first die cavity and a second die cavity; the movable mold is provided with a first mold core and a second mold core, the first mold cavity and one mold core form a first mold cavity, the first mold cavity is communicated with a first flow passage, the second mold cavity and the other mold core form a second mold cavity, the second mold cavity is communicated with a second flow passage, wherein the first flow passage is matched with a first injection nozzle at the top of the fixed mold to be used for injection molding of a semi-finished product into the first mold cavity, and the second flow passage is matched with a second injection nozzle at the side surface of the fixed mold to be used for injection molding of a finished product into the second mold cavity; the rotating mechanism comprises a rotary table which is connected with the movable mould fixing plate in an adapting way, so that a core where the semi-finished product is positioned can rotate along with the movable mould to form a second forming cavity with the second forming cavity; simultaneously, the other core rotates to form the first molding cavity with the first molding cavity; the ejection mechanism comprises ejection assemblies which are arranged in one-to-one correspondence with the first mold cores and the second mold cores, and push rod assemblies which are opposite to the second molding cavities, and the push rod assemblies are used for driving the ejection assemblies to eject finished products in the second molding cavities.
As a further improvement, the rotating mechanism further comprises a fixed block arranged in the turntable, a gear arranged in the fixed block, a rack meshed with the gear, an oil cylinder for driving the rack to move and a rotating shaft coaxially arranged with the gear, wherein the rotating shaft is connected with the turntable in an adaptive manner and is used for driving the turntable to rotate.
As a further improvement, one end of the rotating shaft penetrates through the fixed block in a cylindrical shape and is locked by a fastener to axially limit, and the other end of the rotating shaft is square and is used for being matched with the turntable.
As a further improvement, the fastener comprises a baffle and a nut, wherein the baffle is sleeved on the rotating shaft, and the baffle is limited by abutting against the fixed block through screwing the nut.
As a further improvement, the rotating shaft is provided with a flange structure which is used for being connected with the turntable in an adaptive manner, so that the rotating shaft is limited in the circumferential direction.
As a further improvement, the bottom surface of the movable die is provided with a clearance hole, the movable die fixed plate is arranged below the movable die, the ejection assembly comprises an ejector pin, an ejector pin panel, an ejector pin bottom plate and an auxiliary ejector pin which are arranged in the clearance hole, the ejector pin is upwards arranged and limited by the ejector pin panel and the ejector pin bottom plate, the auxiliary ejector pin downwards arranged and sequentially penetrates through the ejector pin bottom plate, the movable die top plate and the turntable and is matched with the pushing assembly, and the tail end of the auxiliary ejector pin is higher than the fixed block.
As a further improvement, the push rod assembly comprises a push rod, a push rod top plate and a push rod bottom plate, one end of the push rod is limited by the push rod top plate and the push rod bottom plate, and the other end of the push rod sequentially penetrates through the push rod top plate and the fixed block to be opposite to the auxiliary ejector rod, and is used for linking the ejector rod bottom plate to be abutted against the ejector rod panel to move so as to drive the ejector rods to synchronously move.
As a further improvement, two limit stops are arranged along the circumferential direction of the turntable, the spacing angle between the two limit stops is 180 degrees, a positioning part is arranged on the fixed block, and the turntable is configured to stop rotating when the positioning part is opposite to the limit stops.
By adopting the technical scheme, the utility model can obtain the following technical effects:
this application is through setting up two cores at the homonymy of movable mould to avoid setting up two cover half, first penetrate mouth and second and penetrate mouth and be located the top and the side of cover half respectively, make into glued structure compacter, thereby reduce the mould size and reduce the mould size, thereby make this double-colored injection mold structure can be applied to on the micro-section mould. In addition, the push rod assembly is arranged opposite to the second molding cavity so as to eject a finished product in the second molding cavity, and only the push rod assembly is arranged on the side of the molded finished product, so that the structure of the die can be further simplified, and the die is miniaturized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of one embodiment of the present utility model;
FIGS. 2 and 3 are schematic views of an embodiment of the present utility model at different viewing angles;
FIG. 4 is a schematic view of a rotating mechanism according to an embodiment of the present utility model;
FIG. 5 is a schematic structural view of a stationary mold according to an embodiment of the present utility model;
FIG. 6 is a schematic diagram of a movable mold according to an embodiment of the present utility model;
fig. 7 is an exploded view of one embodiment of the present utility model.
Icon:
1-fixing the mold; 11-a first cavity; 12-a second cavity; 13-a first flow channel; 14-a second flow channel;
2-a movable mould; 21-a first core; 22-a second core; 23-avoiding gaps;
31-a turntable; 311-limit stops; 32-fixing blocks; 321-positioning parts; 33-gear; 34-rack; 35-an oil cylinder; 36-a rotation axis; 37-baffle; 38-a nut;
411-thimble; 412-a thimble panel; 413-thimble bottom plate; 414-auxiliary roof stick; 421-push rod; 422-push rod top plate; 423-pushrod bottom plate; 43-guide bar; 431-spring;
5-a first nozzle;
6-a second nozzle;
7-a movable mold fixing plate.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.
Examples
Referring to fig. 1 to 7, the present embodiment provides a two-shot injection mold, which includes a fixed mold 1, a movable mold 2, a rotation mechanism, and an ejection mechanism; the fixed die 1 is provided with a first die cavity 11 and a second die cavity 12; the movable mold 2 is provided with a first mold core 21 and a second mold core 22, the first mold cavity 11 and one mold core form a first mold cavity, the first mold cavity is communicated with a first flow channel 13, the second mold cavity 12 and the other mold core form a second mold cavity, the second mold cavity is communicated with a second flow channel 14, wherein the first flow channel 13 is matched with a first injection nozzle 5 at the top of the fixed mold 1 to be used for injection molding a semi-finished product into the first mold cavity, and the second flow channel 14 is matched with a second injection nozzle 6 at the side surface of the fixed mold 1 to be used for injection molding a finished product into the second mold cavity; the rotating mechanism comprises a rotary table 31 which is adaptively connected with the movable mould fixing plate 7, so that the core where the semi-finished product is positioned can rotate along with the movable mould 2 to form a second forming cavity with the second forming cavity 12; simultaneously, the other core rotates to form a first molding cavity with the first molding cavity 11; the ejection mechanism comprises ejection assemblies which are arranged in one-to-one correspondence with the first core 21 and the second core 22, and push rod assemblies which are arranged opposite to the second molding cavity and are used for driving the ejection assemblies to eject the finished product in the second molding cavity.
For example, the mold is closed, the first cavity 11 and the first core 21 form a first molding cavity, the second cavity 12 and the second core 22 form a second molding cavity, and the first nozzle 5 and the second nozzle 6 respectively inject glue into the first molding cavity and the second molding cavity to mold a semi-finished product and a finished product; after cooling, the mold is opened, the finished product in the second mold core 22 is ejected, the movable mold 2 is driven to rotate, so that the semi-finished product rotates to the position of the second mold cavity 12 along with the first mold core 21, the second mold core 22 rotates to the position of the first mold cavity 11, the mold is closed again, the first mold cavity 11 and the second mold core 22 form a first molding cavity, the second mold cavity 12 and the first mold core 21 form a second molding cavity, and the glue injection, cooling and mold opening are repeated, so that the movable mold 2 is driven to rotate to enter the next injection molding cycle.
It should be noted that, in this embodiment, two cores are disposed on the same side of the movable mold 2, so that two fixed molds 1 can be avoided, and the first nozzle 5 and the second nozzle 6 are respectively located at the top and the side of the fixed mold 1, so that the glue feeding structure is more compact, the mold size and the mold opening stroke are reduced, and the dual-color injection mold structure can be applied to a micro mold. In addition, the push rod component is arranged opposite to the second molding cavity so as to eject a finished product in the second molding cavity, and the push rod component is only required to be arranged on the side of the molded finished product, so that the structure of the die can be further simplified, and the die is miniaturized.
Based on the above embodiment, in an alternative embodiment of the present utility model, the rotating mechanism further includes a fixed block 32 provided on the turntable 31, a gear 33 disposed in the fixed block 32, a rack 34 meshed with the gear 33, an oil cylinder 35 for driving the rack 34 to move, and a rotating shaft 36 coaxially disposed with the gear 33, where the rotating shaft 36 is adapted to be connected with the turntable 31 for driving the turntable 31 to rotate. Preferably, the rotary shaft 36 has one end formed in a cylindrical shape penetrating the fixed block 32 and locked by a fastener to be axially limited, and the other end formed in a square shape to be fitted with the turntable 31. The fastener comprises a baffle 37 and a nut 38, wherein the baffle 37 is sleeved on the rotating shaft 36, and the baffle 37 is abutted with the fixed block 32 to be limited by screwing the nut 38. The rotating shaft 36 is provided with a flange structure adapted to be connected with the turntable 31, so that the rotating shaft 36 is limited in the circumferential direction, and the rotating shaft 36 is prevented from sliding relative to the turntable 31.
In a preferred embodiment, the bottom surface of the movable mold 2 is provided with a clearance space 23, the movable mold fixing plate 7 is disposed below the movable mold 2, the ejection assembly comprises a thimble 411, a thimble panel 412, a thimble bottom plate 413 and an auxiliary thimble 414 disposed in the clearance space 23, the thimble 411 is disposed upwards and limited by the thimble panel 412 and the thimble bottom plate 413, the auxiliary thimble 414 is disposed downwards and sequentially passes through the thimble bottom plate 413, the movable mold fixing plate 7 and the turntable 31 to be matched with the pushing assembly, and the tail end of the auxiliary thimble 414 is higher than the fixed block 32, so that interference is avoided in the rotation process, and the rotation resistance is reduced. The push rod assembly comprises a push rod 421, a push rod top plate 422 and a push rod bottom plate 423, one end of the push rod 421 is limited by the push rod top plate 422 and the push rod bottom plate 423, the other end sequentially passes through the push rod top plate 422 and the fixed block 32 to be opposite to the auxiliary ejector rod 414, and the ejector rod bottom plate 413 is linked to abut against the ejector rod panel 412 to move so as to drive the ejector rod 411 to synchronously move, and the tail end of the push rod 421 is lower than the movable mould fixed plate 7 to avoid interference. It should be noted that in this embodiment, the ejector pin 411 is disposed in the avoidance space 23 of the movable mold 2, so that the ejection structure is compact, and the ejector assembly can move synchronously with the movable mold 2, so that only the push rod assembly is required to be disposed at the side of the second molding cavity, and the structure is simplified. The movable die 2 rotates to rotate in the die, and a semi-finished product is not required to be taken down, so that the working efficiency can be improved.
The working process of the embodiment is as follows: when the mold is opened, the push rod bottom plate 423 pushes the push rod top plate 422 to move under the thrust action of the injection molding machine platform, so that the push rod 421 moves against the auxiliary ejector rod 414, and the ejector pin bottom plate 413 is driven to drive the ejector pin panel 412 to synchronously move, so that the ejector pins 411 eject the finished product. During mold closing, the push rod assemblies and the ejector assemblies are sequentially reset, and preferably, the springs 431 are reset by the springs 431 arranged on the guide rods 43, and the springs 431 are abutted between the movable mold 2 and the ejector pin panel 412, so that the mold is not limited to the above.
In another embodiment, two limit stops 311 are provided along the circumferential direction of the turntable 31, the spacing angle between the two limit stops 311 is 180 °, a positioning portion 321 is provided on the fixed block 32, and the turntable 31 is configured to stop rotating when the positioning portion 321 faces the limit stops 311. The limit stop 311 and the positioning portion 321 may be an electromagnetic structure or other limit structures, which are not limited in particular.
For example, when the mold is closed, the first nozzle 5 injects the first molten rubber material into the first molding cavity to mold a semi-finished product, and the second nozzle 6 injects the second molten rubber material into the second molding cavity to mold a finished product. It should be noted that before the second nozzle 6 shoots the glue, the second molding cavity is left with the cooled and solidified semi-finished product; for the case that the second molding cavity does not leave a semi-finished product when the first mold is used for first injection molding, the second injection nozzle 6 does not perform glue injection.
After the finished product of the second molding cavity is cooled and solidified, the mold is opened, and the ejector rod of the injection molding machine drives the assembly to move, so that the ejector rod 421 is abutted against the auxiliary ejector rod 414 to drive the ejector pin bottom plate 413 and the ejector pin panel 412 to move, and the ejector pin 411 ejects the finished product. At this time, the semi-finished product in the first molding cavity is left on the movable mould 2, and a runner of the molded semi-finished product is manually or mechanically removed; during this process, the semifinished product of the first molding cavity remains stationary on the movable mold 2.
After the finished product at the second molding cavity is ejected and dropped, the oil cylinder 35 drives the rack 34, the rotary shaft 36 drives the turntable 31 to rotate 180 degrees through the transmission of the gear 33, and the rotation is stopped when the limit stop 311 is opposite to the positioning part 321 on the fixed block 32, and at the moment, the movable mold 2 and the ejection assembly synchronously rotate 180 degrees; in the process, the semi-finished product follow-up die 2 on the movable die 2 rotates to be transferred from the first molding cavity to the second molding cavity.
After the semi-finished product is transferred from the first core 21 to the second molding cavity, the mold is closed, and the first nozzle 5 injects the first molten sizing material into the first molding cavity again to mold the semi-finished product; simultaneously, the second nozzle 6 injects the second molten sizing material into the second molding cavity, and the semi-finished product is subjected to secondary injection molding and encapsulation to form a new finished product, so that the next molding cycle is repeatedly carried out.
The above is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model.
Claims (8)
1. A two-shot injection mold, comprising:
a fixed die provided with a first cavity and a second cavity;
the movable mold is provided with a first mold core and a second mold core, the first mold cavity and one mold core form a first molding cavity, the first molding cavity is communicated with a first flow passage, the second mold cavity and the other mold core form a second molding cavity, the second molding cavity is communicated with a second flow passage, the first flow passage is matched with a first injection nozzle at the top of the fixed mold to be used for injection molding of a semi-finished product into the first molding cavity, and the second flow passage is matched with a second injection nozzle at the side surface of the fixed mold to be used for injection molding of a finished product into the second molding cavity;
the rotating mechanism comprises a rotary table which is connected with the movable mould fixing plate in an adapting way, so that the core where the semi-finished product is positioned can rotate along with the movable mould to form a second forming cavity with the second forming cavity; simultaneously, the other core rotates to form the first molding cavity with the first molding cavity;
the ejection mechanism comprises ejection assemblies which are arranged in one-to-one correspondence with the first mold cores and the second mold cores, and push rod assemblies which are opposite to the second molding cavities, and the push rod assemblies are used for driving the ejection assemblies to eject finished products in the second molding cavities.
2. The bicolor injection mold of claim 1, wherein the rotating mechanism further comprises a fixed block arranged on the turntable, a gear arranged in the fixed block, a rack meshed with the gear, an oil cylinder for driving the rack to move, and a rotating shaft coaxially arranged with the gear, wherein the rotating shaft is in fit connection with the turntable and is used for driving the turntable to rotate.
3. The two-shot injection mold of claim 2, wherein one end of the rotating shaft is cylindrical, penetrates through the fixed block, is locked by a fastener to be axially limited, and the other end of the rotating shaft is square for being matched with the turntable.
4. The two-shot injection mold of claim 3, wherein the fastener comprises a baffle and a nut, the baffle is sleeved on the rotating shaft, and the baffle is limited by abutting the fixed block by screwing the nut.
5. A two-shot injection mold according to claim 3, wherein the rotating shaft is provided with a flange structure adapted to be connected with the turntable, so that the rotating shaft is circumferentially limited.
6. The dual-color injection mold of claim 2, wherein a clearance space is provided on the bottom surface of the movable mold, the movable mold fixing plate is disposed below the movable mold, the ejection assembly comprises an ejector pin, an ejector pin panel, an ejector pin bottom plate and an auxiliary ejector pin disposed in the clearance space, the ejector pin is disposed upward and limited to the ejector pin bottom plate through the ejector pin panel, the auxiliary ejector pin is disposed downward and sequentially penetrates through the ejector pin bottom plate, the movable mold top plate and the turntable, and is used for being matched with the pushing assembly, and the tail end of the auxiliary ejector pin is higher than the fixed block.
7. The dual-color injection mold of claim 6, wherein the push rod assembly comprises a push rod, a push rod top plate and a push rod bottom plate, one end of the push rod is limited by the push rod top plate and the push rod bottom plate, and the other end sequentially passes through the push rod top plate and the fixed block to be opposite to the auxiliary ejector rod, so as to link the ejector rod bottom plate to abut against the ejector rod panel to move, thereby driving the ejector rods to synchronously move.
8. The two-shot injection mold according to claim 2, wherein two limit stops are provided along a circumferential direction of the turntable, an interval angle between the two limit stops is 180 °, a positioning portion is provided on the fixed block, and the turntable is configured to stop rotating when the positioning portion faces the limit stops.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321871465.5U CN220499810U (en) | 2023-07-17 | 2023-07-17 | Double-colored injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321871465.5U CN220499810U (en) | 2023-07-17 | 2023-07-17 | Double-colored injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220499810U true CN220499810U (en) | 2024-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321871465.5U Active CN220499810U (en) | 2023-07-17 | 2023-07-17 | Double-colored injection mold |
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| Country | Link |
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| CN (1) | CN220499810U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119116264A (en) * | 2024-10-31 | 2024-12-13 | 常州星宇车灯股份有限公司 | Injection molding structure and method for double-color and double-weight products |
| CN120206731A (en) * | 2025-05-28 | 2025-06-27 | 广东美的制冷设备有限公司 | Two-color product molding mold |
-
2023
- 2023-07-17 CN CN202321871465.5U patent/CN220499810U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119116264A (en) * | 2024-10-31 | 2024-12-13 | 常州星宇车灯股份有限公司 | Injection molding structure and method for double-color and double-weight products |
| CN120206731A (en) * | 2025-05-28 | 2025-06-27 | 广东美的制冷设备有限公司 | Two-color product molding mold |
| CN120206731B (en) * | 2025-05-28 | 2025-10-10 | 广东美的制冷设备有限公司 | Double-color product forming die |
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