CN220681489U - Optical sensor injection molding assembly - Google Patents
Optical sensor injection molding assembly Download PDFInfo
- Publication number
- CN220681489U CN220681489U CN202322350521.7U CN202322350521U CN220681489U CN 220681489 U CN220681489 U CN 220681489U CN 202322350521 U CN202322350521 U CN 202322350521U CN 220681489 U CN220681489 U CN 220681489U
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- Prior art keywords
- injection molding
- optical sensor
- runner
- valve needle
- groove
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 74
- 230000003287 optical effect Effects 0.000 title claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims description 20
- 238000004891 communication Methods 0.000 claims description 4
- 230000008602 contraction Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 17
- 238000007789 sealing Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model relates to the technical field of sealing strip processing, in particular to an optical sensor injection molding assembly. The utility model provides an optical sensor injection molding assembly, which comprises a runner system and a mold; the runner system comprises a split runner and a valve needle, and one end of the valve needle is positioned in the split runner; the die comprises an upper die and a lower die, a first injection molding groove and a second injection molding groove are respectively formed in the lower surface of the upper die and the upper surface of the lower die, the first injection molding groove and the second injection molding groove form a shell groove, and the shell groove is used for injection molding to form a shell of the optical sensor; and the upper die is provided with at least one valve needle hole, and the valve needle hole is communicated with the first injection molding groove. The bottom cover is not needed any more, the circuit board is directly packaged into the shell, the production steps are reduced, the production efficiency is improved, and the production cost is saved.
Description
Technical Field
The utility model relates to the technical field, in particular to an optical sensor injection molding assembly.
Background
An optical sensor structure as shown in fig. 6 mainly comprises a circuit board 10, a housing 9 and a bottom cover 11. At present, the optical sensor is produced by injection molding the housing 9, assembling the circuit board 10 into the housing 9, and finally sealing the bottom cover 11 by ultrasonic welding.
The process is complex, low in production efficiency and high in production cost.
Disclosure of Invention
The utility model solves the problems that: the production method of the bottom cover by adopting the steps of firstly injection molding the shell, then assembling the circuit board into the shell and finally welding the bottom cover by using ultrasonic waves has low production efficiency and high production cost.
(II) technical scheme
An optical sensor injection molding assembly comprises a runner system and a mold;
the runner system comprises a split runner and a valve needle, and one end of the valve needle is positioned in the split runner;
the die comprises an upper die and a lower die, a first injection molding groove and a second injection molding groove are respectively formed in the lower surface of the upper die and the upper surface of the lower die, the first injection molding groove and the second injection molding groove form a shell groove, and the shell groove is used for injection molding to form a shell of the optical sensor;
and the upper die is provided with at least one valve needle hole, and the valve needle hole is communicated with the first injection molding groove.
According to one embodiment of the utility model, the runner system further comprises a feed nozzle, a heating splitter plate and a main runner, wherein the feed nozzle is communicated with the feed inlet of the main runner, the discharge outlet of the main runner is communicated with the heating splitter plate, and the heating splitter plate is communicated with the feed inlet of the splitter.
According to one embodiment of the utility model, the optical sensor injection molding assembly further comprises a movable plate on which the feed nozzle and the primary runner are both mounted.
According to one embodiment of the utility model, the optical sensor injection molding assembly further comprises a cylinder for controlling the valve needle to retract and retract, the cylinder being mounted on the movable plate.
According to one embodiment of the utility model, the shunt has two shunt openings, the valve needle is provided with two shunt openings, and the two valve needles respectively enter the two shunt openings.
According to one embodiment of the utility model, the upper surface of the upper die is provided with a first notch and a second notch, a first slot is arranged in the first notch, a second slot is arranged in the second notch, and the two shunt ports are respectively matched with the first slot and the second slot.
According to one embodiment of the utility model, two valve needle holes are provided, and the two valve needle holes are respectively positioned in the first slot and the second slot.
According to one embodiment of the utility model, the cylinders are provided with four cylinders.
According to one embodiment of the utility model, the lower die and the upper die are molded together by an injection molding machine.
The utility model has the beneficial effects that:
the utility model provides an optical sensor injection molding assembly, which comprises a runner system and a mold; the runner system comprises a runner and a valve needle, and one end of the valve needle is positioned in the runner; the die comprises an upper die and a lower die, wherein a first injection molding groove and a second injection molding groove are respectively formed in the lower surface of the upper die and the upper surface of the lower die, the first injection molding groove and the second injection molding groove form a shell groove, and the shell groove is used for injection molding to form a shell of the optical sensor; at least one valve needle hole is formed in the upper die and communicated with the first injection molding groove.
When the optical sensor is produced, the upper die and the lower die can be opened firstly, then the circuit board is placed in the second injection molding groove on the lower die, then the injection molding machine is used for closing the lower die to form a shell groove, then the split runner drives the valve needle to be inserted into the upper die, the valve needle is pressed on the circuit board, then injection molding is started, and the valve needle is withdrawn when the plastic on the circuit board is rapidly injected. And after the valve needle is withdrawn, filling the needle hole on the shell by adopting injection molding and pressure maintaining.
Therefore, the bottom cover is not needed any more, the circuit board is directly packaged into the shell, the production steps are reduced, the production efficiency is improved, and the production cost is saved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram provided by an embodiment of the present utility model;
FIG. 2 is a block diagram of a valve needle and a subchannel provided by an embodiment of the present utility model;
FIG. 3 is a block diagram of a mold provided by an embodiment of the present utility model;
FIG. 4 is a diagram of the upper die according to the embodiment of the present utility model;
FIG. 5 is an exploded view of a mold according to an embodiment of the present utility model;
fig. 6 is a block diagram of an optical sensor according to the prior art.
Icon: 1-a movable plate; 2-cylinder; 3-a feeding nozzle; 4-a main runner; 5 heating the splitter plate; 6-a sub-runner; 7-valve needle; 8-a die; 801-upper die; 802-lower die; 803-first notch; 804-a second notch; 805-a second slot; 806-a first slot; 807-a first injection molding groove; 9-a housing; 10-a circuit board; 11-bottom cover.
Detailed Description
The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1-5, one embodiment of the present utility model provides an optical sensor injection molding assembly comprising a runner system and a mold 8;
the runner system comprises a runner 6 and a valve needle 7, and one end of the valve needle 7 is positioned in the runner 6;
the die 8 comprises an upper die 801 and a lower die 802, wherein a first injection molding groove 807 and a second injection molding groove are respectively formed in the lower surface of the upper die 801 and the upper surface of the lower die 802, the first injection molding groove 807 and the second injection molding groove form a shell groove, and the shell groove is used for injection molding to form a shell of the optical sensor;
the upper mold 801 is provided with at least one valve pin hole which communicates with the first injection molding groove 807.
In this way, when the optical sensor is produced, the upper die 801 and the lower die 802 can be opened first, then the circuit board 10 is placed in the second injection molding groove on the lower die 802, then the upper die 801 and the lower die 802 are clamped by the injection molding machine to form the housing groove, then the split runner 6 drives the valve needle 7 to be inserted into the upper die 801, the valve needle 7 is pressed on the PCB (namely the circuit board 10), then injection molding is started, and the valve needle is withdrawn when the plastic on the PCB is quickly injected. And after the valve needle 7 is withdrawn, filling the needle hole on the shell by adopting injection molding and pressure maintaining.
Thus, the bottom cover 11 is not needed any more, the circuit board 10 is directly packaged into the shell, the production steps are reduced, the production efficiency is improved, and the production cost is saved.
Preferably, as shown in fig. 1, the runner system includes a feeding nozzle 3, a movable plate 1, a heating splitter plate 5 and a main runner 4, wherein the feeding nozzle 3 and the main runner 4 are both installed on the movable plate 1, the feeding nozzle 3 is communicated with a feeding port of the main runner 4, the main runner 4 passes through the movable plate 1, a discharging port of the main runner 4 is located below the movable plate 1, a discharging port of the main runner 4 is communicated with the heating splitter plate 5, the splitter runner 6 is located below the heating splitter plate 5, and a feeding port of the splitter runner 6 is communicated with the heating splitter plate 5.
The molten plastic thus flows from the inlet nozzle 3 into the main channel 4 and then from the main channel 4 into the heating manifold 5, the heating manifold 5 keeps the molten plastic warm, and further, the molten plastic flows from the heating manifold 5 into the manifold 6 and finally into the mold 8 through the manifold 6.
The plastic can flow in balance by heating the flow dividing plate 5, and the heat of the system is balanced. The heating mode of the hot runner flow dividing plate is two, namely internal heating and external heating. In this embodiment, it is preferable to adopt an internal heating method in which a heating rod is provided in the flow path to heat the plastic from the inside of the flow path.
The shunt 6 has two shunt ports, two valve needles 7 are arranged, and the two valve needles 7 respectively enter the two shunt ports.
Preferably, four cylinders 2 are mounted on the movable plate 1, the opening and closing of the valve needle 7 is controlled by injection signals of the injection molding machine, specifically, the injection signals are transmitted to electromagnetic valves of the nozzles, and then air inlet channels of the cylinders 2 are controlled, so that pistons of the cylinders 2 drive the valve needle 7 to move upwards, a gate is opened, and plastic solution is injected into a cavity in the mold 8 from a split port of the split runner 6. When the injection signal disappears, the electromagnetic valve is powered off, the air cylinder 2 changes the air inlet channel, so that the piston drives the valve needle 7 to move downwards, and the valve needle 7 blocks the shunt opening of the shunt channel 6, thereby closing the gate.
Preferably, the mold 8 includes an upper mold 801 and a lower mold 802, as shown in fig. 3, 4 and 5, a lower surface of the upper mold 801 and an upper surface of the lower mold 802 are respectively provided with a first injection molding groove 807 and a second injection molding groove, the first injection molding groove 807 and the second injection molding groove form a housing groove, the housing groove is used for injection molding to form a housing of the optical sensor, further, a first notch 803 and a second notch 804 are provided on the upper surface of the upper mold 801, a first slot 806 is provided in the first notch 803, a second slot 805 is provided in the second notch 804, and two shunt ports at the lower end of the shunt channel 6 can be inserted into the first slot 806 and the second slot 805.
Further, a valve pin hole is formed in each of the first slot 806 and the second slot 805, the first slot 806 and the second slot 805 are circular slots, the valve pin hole in the first slot 806 is coaxially arranged with the first slot 806, and the valve pin hole in the second slot 805 is coaxially arranged with the second slot 805. The pin 7 is inserted into the housing groove between the upper die 801 and the lower die 802 from the pin hole of the upper die 801.
It should be noted that the upper mold 801 and the lower mold 802 are molded together by an injection molding machine, the upper mold 801 and the lower mold 802 are separated, the circuit board 10 is then placed in the second injection molding groove of the lower mold 802, and then the upper mold 801 and the lower mold 802 are molded together by the injection molding machine, so that the first injection molding groove 807 in the upper mold 801 and the second injection molding groove in the lower mold 802 are combined to form a complete cavity, and then the split runner 6 and the valve needle 7 are molded into the cavity to form a complete housing, and the separate welding bottom cover 11 is not required, thereby reducing the production steps, improving the production efficiency, and saving the production cost.
It should be noted that two pinholes are formed in the housing after the valve pin 7 is withdrawn from the mold 8, and thus, after the valve pin 7 is withdrawn, the pinholes in the housing need to be filled with injection molding pressure maintaining to eliminate the two pinholes, so that the housing is formed as a whole.
In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. 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.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the communication may be direct or indirect through an intermediate medium, or may be internal to two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (9)
1. An optical sensor injection molding assembly, characterized by comprising a runner system and a mold (8);
the runner system comprises a split runner (6) and a valve needle (7), and one end of the valve needle (7) is positioned in the split runner (6);
the die (8) comprises an upper die (801) and a lower die (802), a first injection molding groove (807) and a second injection molding groove are respectively formed in the lower surface of the upper die (801) and the upper surface of the lower die (802), the first injection molding groove (807) and the second injection molding groove form a shell groove, and the shell groove is used for injection molding to form a shell of the optical sensor;
at least one valve needle hole is formed in the upper die (801), and the valve needle hole is communicated with the first injection molding groove (807).
2. An optical sensor injection molding assembly according to claim 1, wherein said runner system further comprises a feed nozzle (3), a heating manifold (5) and a main runner (4), said feed nozzle (3) being in communication with a feed inlet of said main runner (4), a discharge outlet of said main runner (4) being in communication with said heating manifold (5), said heating manifold (5) being in communication with a feed inlet of said manifold (6).
3. An optical sensor injection molding assembly according to claim 2, further comprising a movable plate (1), wherein the feed nozzle (3) and the primary runner (4) are both mounted on the movable plate (1).
4. An optical sensor injection moulding assembly according to claim 3, further comprising a cylinder (2), said cylinder (2) being adapted to control the expansion and contraction of said valve needle (7), said cylinder (2) being mounted on said movable plate (1).
5. An optical sensor injection moulding assembly according to claim 4, wherein the shunt channel (6) has two shunt ports, the valve needle (7) being provided with two, two of the valve needles (7) respectively entering into the two shunt ports.
6. The optical sensor injection molding assembly according to claim 5, wherein a first notch (803) and a second notch (804) are formed in the upper surface of the upper mold (801), a first slot (806) is formed in the first notch (803), a second slot (805) is formed in the second notch (804), and the two shunt ports are respectively matched with the first slot (806) and the second slot (805).
7. An optical sensor injection molding assembly according to claim 6, wherein there are two of said valve pin bores, two of said valve pin bores being located in a first slot (806) and a second slot (805), respectively.
8. An optical sensor injection moulding assembly according to claim 4, wherein the cylinder (2) is provided with four.
9. An optical sensor injection molding assembly according to claim 1, wherein said lower mold (802) and said upper mold (801) are molded together by an injection molding machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322350521.7U CN220681489U (en) | 2023-08-31 | 2023-08-31 | Optical sensor injection molding assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322350521.7U CN220681489U (en) | 2023-08-31 | 2023-08-31 | Optical sensor injection molding assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220681489U true CN220681489U (en) | 2024-03-29 |
Family
ID=90408699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322350521.7U Active CN220681489U (en) | 2023-08-31 | 2023-08-31 | Optical sensor injection molding assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220681489U (en) |
-
2023
- 2023-08-31 CN CN202322350521.7U patent/CN220681489U/en active Active
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