CN208914549U - Component missing detection circuit, device and injection molding system in injection molding part - Google Patents
Component missing detection circuit, device and injection molding system in injection molding part Download PDFInfo
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- CN208914549U CN208914549U CN201821821639.6U CN201821821639U CN208914549U CN 208914549 U CN208914549 U CN 208914549U CN 201821821639 U CN201821821639 U CN 201821821639U CN 208914549 U CN208914549 U CN 208914549U
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Abstract
The utility model discloses component missing detection circuit, device and injection molding system in a kind of injection molding part, wherein, component missing detection circuit includes power circuit, action sensing circuit and component senses circuit in injection molding part, action sensing circuit is to when sensing transfer device and being moved to initial position, it triggers and exports the first inductive signal, component senses circuit is to when receiving the first inductive signal, sense the component of Working position, in the component missing for sensing Working position, triggers and export the second inductive signal.In technical solution provided by the utility model, component senses circuit is after receiving first inductive signal, sense the component of Working position, in the component missing for sensing Working position, triggers and export the second inductive signal, so that injection molding system stops working, to avoid the generation of waste product, so reduce artificial detection, save human cost, and the efficiency and accuracy that detect are all higher.
Description
Technical field
The utility model relates to injection molding technology field, in particular to component missing detection electricity in a kind of injection molding part
Road, device and injection molding system.
Background technique
Multiple connecting components are generally fitted in LCD TV, in television rear shell, and (connecting component is generally Nut column
Equal metalworks, pass through Shooting Technique and rear shell is integrally formed), be usually first pass through manually or mechanically equipment by multiple connecting components
It is put into injection mold, then checks the number of connecting component with the presence or absence of missing by artificial eye, confirmation after missing without carrying out
Injection molding, the mode whether this artificial eye inspection part lacks, there are inefficiency, and inspection can generate view for a long time
Feel fatigue, it is easier to the problem of malfunctioning.
Utility model content
The main purpose of the utility model is to propose component missing detection circuit, device and injection molding in a kind of injection molding part
Formation system, it is intended to solve it is existing whether lacked by artificial eye inspection part, there is a problem of low efficiency and error-prone.
To achieve the above object, the utility model provides component missing detection circuit in a kind of injection molding part, is used for
Injection molding system, the injection molding system include between the initial position and Working position on injection molding system
Switch so that the component of injection molding part to be transferred to the transfer device of the Working position, component missing in the injection molding part
Detection circuit includes:
Power circuit；
Action sensing circuit is connect with the power circuit, to sense the transfer device be moved to it is described just
When beginning position, triggers and export the first inductive signal；And
Component senses circuit, and the power circuit and the action sensing circuit connection, to receive described
When one inductive signal, sense the component of the Working position, sense the Working position component missing when, triggering and it is defeated
Second inductive signal out, so that the injection molding system stops working.
Preferably, the component senses circuit includes the delay circuit and sensing circuit being in parallel, the delay circuit
Input terminal is connect with the output end of the action sensing circuit, and the output end of the delay circuit is the component senses circuit
Output end, the input terminal of the sensing circuit are connect with the output end of the action sensing circuit, the output of the sensing circuit
End is connect with the input terminal of the action sensing circuit；
The delay circuit is to be delayed when receiving first inductive signal；
Component of the sensing circuit when receiving first inductive signal, to sense the Working position,
When sensing the component of the Working position in the delay time of the delay circuit without missing, triggers and export third induction letter
Number, it controls the action sensing circuit and stops working；
The delay circuit delay time then, delay circuit triggering and export second inductive signal.
Preferably, the action sensing circuit includes the first normally closed switch, contact switch and the first functional switch, and described the
The input terminal of one normally closed switch is the input terminal of the action sensing circuit, the output end of first normally closed switch and the touching
The input terminal connection of point switch, the output end of the contact switch connect with the input terminal of first functional switch, and described the
The output end of one functional switch is the output end of the action sensing circuit；
First normally closed switch is when receiving the third inductive signal, to turn off the action sensing circuit；
The contact switch includes the first contact set on the transfer device and the second touching set on the initial position
Point, when the transfer device is moved to the initial position, first conductive contact and second conductive contact contact
And it is connected；
First functional switch is to trigger and export the first induction letter in action sensing circuit conducting
Number.
Preferably, the action sensing circuit further includes the first normal open switch being in parallel with the contact switch, described
The input terminal of first normal open switch is connect with the output end of first functional switch；
First normal open switch is to the conducting when receiving first inductive signal.
Preferably, the delay circuit include the second normal open switch and the time relay, second normal open switch it is defeated
Enter the input terminal that end is the delay circuit, the output end of second normal open switch and the input terminal of the time relay connect
It connects, the output end of the time relay is the output end of the delay circuit；
Second normal open switch is to the conducting when receiving first inductive signal；
The time relay to second normal open switch conducting when, be delayed, and delay time then,
It triggers and exports second inductive signal.
Preferably, the sensing circuit includes the second functional switch and component inductor, the input of the component inductor
End is the input terminal of the sensing circuit, the input terminal company of the output end of the component inductor and second functional switch
It connects, the output end of second functional switch is the output end of the sensing circuit, wherein the component inductor adds with described
The component that station is set is in be arranged in a one-to-one correspondence；
The component inductor is to sense the corresponding Working position when receiving first inductive signal
Component, the conducting when the component for sensing the Working position is without missing；
Second functional switch is to trigger and export the third induction letter in component inductor conducting
Number.
Preferably, component missing detection circuit further includes reset switch in the injection molding part, the reset switch
Input terminal is connect with the output end of the power circuit, the input of the output end of the reset switch and the action sensing circuit
End connection, the reset switch stop working to control the action sensing circuit.
Preferably, component missing detection circuit further includes and the power circuit and the component in the injection molding part
The warning circuit of sensing circuit connection, the input terminal of the warning circuit are connect with the output end of the component senses circuit, institute
Warning circuit is stated to the conducting when receiving second inductive signal；And/or
Component missing detection circuit further includes the injection molding machine set on the injection molding system in the injection molding part
The output end of second normally closed switch of power circuit, the input terminal of second normally closed switch and the component senses circuit connects
It connects, power circuit of second normally closed switch when receiving second inductive signal, to turn off the injection molding machine.
The utility model additionally provides component missing detection electricity in a kind of component missing detection device, including injection molding part
Road, component missing detection circuit includes: in the injection molding part
Power circuit；
Action sensing circuit is connect with the power circuit, to sense the transfer device be moved to it is described just
When beginning position, triggers and export the first inductive signal；And
Component senses circuit, and the power circuit and the action sensing circuit connection, to receive described
When one inductive signal, sense the component of the Working position, sense the Working position component missing when, triggering and it is defeated
Second inductive signal out, so that the injection molding system stops working.
The utility model additionally provides a kind of injection molding system, comprising:
Injection molding machine；
Transfer device, for switching between initial position and Working position the component of injection molding part is transferred to institute
State Working position；And
Component lacks component in detection device, including injection molding part and lacks detection circuit, the injection molding part middle part
Part missing detection circuit includes power circuit, action sensing circuit and component senses circuit, the action sensing circuit and institute
State power circuit connection, to when sensing the transfer device and being moved to the initial position, triggering and export the first sense
Induction signal, the component senses circuit and the power circuit and the action sensing circuit connection, to receive it is described
When the first inductive signal, sense the component of the Working position, sense the Working position component missing when, triggering and
The second inductive signal is exported, so that the injection molding system stops working.
In technical solution provided by the utility model, component is transferred to Working position and returns to initial position by transfer device
Afterwards, the action sensing circuit triggers and exports the first inductive signal, and the component senses circuit is receiving first sense
After induction signal, the component of Working position is sensed, in the component missing for sensing Working position, triggers and exports the second induction letter
Number, so that injection molding system stops working, to avoid the generation of waste product, so reduces artificial detection, save manpower
Cost, and the efficiency and accuracy that detect are all higher.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the circuit knot that component lacks in an embodiment of detection circuit in injection molding part provided by the utility model
Structure schematic diagram.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 100 | Power circuit | K3 | First normal open switch |
| 200 | Action sensing circuit | K4 | Second normal open switch |
| 300 | Delay circuit | K5 | Second normally closed switch |
| 400 | Sensing circuit | K6 | Third normal open switch |
| 500 | Warning circuit | R1 | First functional switch |
| B | Electric pressure converter | R2 | Second functional switch |
| E | Alarm | SB | Reset switch |
| K1 | First normally closed switch | SJ | The time relay |
| K2 | Contact switch | SQ1~6 | Component inductor |
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, fall within the protection scope of the utility model.
It is to be appreciated that if related in the utility model embodiment directionality instruction (such as upper and lower, left and right, it is preceding,
Afterwards ...), then directionality instruction is only used for explaining opposite between each component under a certain particular pose (as shown in the picture)
Positional relationship, motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, if relating to the description of " first ", " second " etc. in the utility model embodiment, " first ", " the
Two " etc. description is used for description purposes only, and is not understood to indicate or imply its relative importance or is implicitly indicated meaning
The quantity of the technical characteristic shown." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one
A this feature.It in addition, the technical solution between each embodiment can be combined with each other, but must be with ordinary skill
Based on personnel can be realized, this technical side will be understood that when the combination of technical solution appearance is conflicting or cannot achieve
The combination of case is not present, also not within the protection scope of the requires of the utility model.
The utility model proposes a kind of injection molding system, the injection molding system include injection molding machine, transfer device with
And component lacks detection device, the transfer device is described component to be transferred in the injection mold on the injection molding machine
Component lacks detection device and is used to switch between the initial position and Working position on the injection molding system will be molded
The component of molded part is transferred to the Working position, and the component missing detection device includes component missing inspection in injection molding part
Slowdown monitoring circuit, Fig. 1 are the embodiment that component lacks detection circuit in injection molding part provided by the utility model.
Referring to Fig. 1, in the present embodiment, component missing detection circuit includes power circuit in the injection molding part
100, action sensing circuit 200 and component senses circuit, the action sensing circuit 200 are connect with the power circuit 100,
To when sensing the transfer device and being moved to the initial position, triggering and export the first inductive signal, the component
Sensing circuit is connect with the power circuit 100 and the action sensing circuit 200, to receive the first induction letter
Number when, sense the component of the Working position, sense the Working position component missing when, triggering and export second sense
Induction signal, so that the injection molding system stops working.
In technical solution provided by the utility model, component is transferred to Working position and returns to initial position by transfer device
Afterwards, the action sensing circuit 200 triggers and exports the first inductive signal, and the component senses circuit is receiving described first
After inductive signal, the component of Working position is sensed, in the component missing for sensing Working position, triggers and exports the second induction
Signal to avoid the generation of waste product, so reduces artificial detection, saves people so that injection molding system stops working
Power cost, and the efficiency and accuracy that detect are all higher.
The action sensing circuit 200 and the component senses circuit are powered by the power circuit 100, had
Body, referring to Fig. 1, in the present embodiment, the power circuit 100 includes electric pressure converter B, the electric pressure converter B is used
The 220V alternating current of input is converted to 24V direct current electricity output to the action sensing circuit 200 and component senses electricity
Road.
Sensing part is removed by the component senses circuit, in order to reserve the time of sensing part, referring to Fig. 1, at this
In embodiment, the component senses circuit includes the delay circuit 300 and sensing circuit 400 being in parallel, the delay circuit 300
Input terminal connect with the output end of the action sensing circuit 200, the output end of the delay circuit 300 is the component sense
The output end of slowdown monitoring circuit, the input terminal of the sensing circuit 400 is connect with the output end of the action sensing circuit 200, described
The output end of sensing circuit 400 is connect with the input terminal of the action sensing circuit 200；The delay circuit 300 is to connect
When receiving first inductive signal, it is delayed；The sensing circuit 400 is to receive first inductive signal
When, the component of the Working position is sensed, the portion of the Working position is sensed in the delay time of the delay circuit 300
When part is without missing, triggers and export third inductive signal, control the action sensing circuit 200 and stop working；In the delay
Then, the delay circuit 300 triggers and exports second inductive signal delay time of circuit 300, passes through the delay
Circuit 300 go trigger and export second inductive signal, so that it may to the sensing circuit 400 leave in advance sensing part when
Between.
Referring to Fig. 1, in the present embodiment, the delay circuit 300 includes the second normal open switch K4 and the time relay
The input terminal of SJ, the second normal open switch K4 are the input terminal of the delay circuit 300, and the second normal open switch K4's is defeated
Outlet is connect with the input terminal of the time relay sj, and the output end of the time relay sj is the delay circuit 300
Output end；The second normal open switch K4 is to the conducting when receiving first inductive signal；The time relay
SJ to the second normal open switch K4 conducting when, be delayed, and delay time then, trigger and export described second
Inductive signal, when the action sensing circuit 200 exports first inductive signal, the second normal open switch K4 conducting,
The time relay sj starts to be delayed, if the sensing circuit 400 triggers and exports the third in delay time
Inductive signal, the action sensing circuit 200 stop working, the second normal open switch K4 shutdown, the time relay sj
It stops working；If delay time is then and the sensing circuit 400 is not triggered, the time relay sj triggers and exports institute
State the second inductive signal.
Sensing part is removed by the sensing circuit 400, specifically, referring to Fig. 1, in the present embodiment, the sensing
Circuit 400 includes the second functional switch R2 (the second functional switch R2 can select intermediate relay etc.) and component inductor
SQ1~6 (the component inductor can select approach switch or metal sensor etc.), component inductor SQ1~6
Input terminal be the sensing circuit 400 input terminal, the output end of component inductor SQ1~6 and second function
The input terminal of switch R2 connects, and the output end of the second functional switch R2 is the output end of the sensing circuit 400, wherein
The component of component inductor SQ1~6 and the Working position is in be arranged in a one-to-one correspondence；The component inductor SQ1~6 is used
To sense the component of the corresponding Working position, sense the machining position when receiving first inductive signal
The conducting when component set is without missing；The second functional switch R2 is to trigger in the component inductor SQ1~6 conducting
And the third inductive signal is exported, when multiple component inductors sense corresponding component and are connected, explanation is not present
The case where component lacks can just make the second functional switch R2 trigger and export the third inductive signal.
The component senses circuit is triggered by the movement that the action sensing circuit 200 senses transfer device, it is described
Action sensing circuit 200 can be realized using Hall sensor, travel switch etc. close to inductive switch, specifically, please refer to figure
1, in the present embodiment, the action sensing circuit 200 includes the first normally closed switch K1, contact switch K2 and the first functional switch
The input terminal of R1 (the first functional switch R1 can select intermediate relay etc.), the first normally closed switch K1 are described dynamic
Make the input terminal of sensing circuit 200, the output end of the first normally closed switch K1 is connect with the input terminal of the contact switch K2,
The output end of the contact switch K2 is connect with the input terminal of the first functional switch R1, and the first functional switch R1's is defeated
Outlet is the output end of the action sensing circuit 200；The first normally closed switch K1 is to receive the third induction
When signal, the action sensing circuit 200 is turned off；The contact switch K2 include set on the transfer device the first contact,
And set on the second contact of the initial position, when the transfer device is moved to the initial position, described first is conductive
Contact and second conductive contact are contacted and are connected；The first functional switch R1 is in the action sensing circuit 200
When conducting, triggers and export first inductive signal.
Further, in the present embodiment, the action sensing circuit 200 further includes being in parallel with the contact switch K2
First normal open switch K3, the input terminal of the first normal open switch K3 are connect with the output end of the first functional switch R1；Institute
The first normal open switch K3 is stated to the conducting when receiving first inductive signal, is moved to institute in the transfer device in this way
When stating initial position, generates first inductive signal and the first normal open switch K3 is connected, at this point, even if the biography
Delivery device leaves the initial position, and the action sensing circuit 200 is still conducting.
In component missing, second inductive signal is exported by component senses circuit triggering, so that described
Injection molding system stops working, and there are many modes that make the injection molding system stop working, and can be and please refers to figure
1, in the present embodiment, component missing detection circuit further includes and the power circuit 100 and described in the injection molding part
The warning circuit 500 of component senses circuit connection, the output of the input terminal of the warning circuit 500 and the component senses circuit
End connection, the warning circuit 500 to the conducting when receiving second inductive signal, such operator hear it is described
When the alarm signal of warning circuit 500, the injection operation for carrying out next step can be parked in.
Specifically, in the present embodiment, the warning circuit 500 includes alarm E and third normal open switch K6, and described the
The input terminal of three normal open switch K6 is connect with the output end of the component senses circuit, the output end of the third normal open switch K6
It is connect with the input terminal of the alarm E, the third normal open switch K6 when receiving second inductive signal to lead
It is logical.
The mode for making the injection molding system stop working can also be referring to Fig. 1, in the present embodiment, the note
Component missing detection circuit further includes the second of the power circuit of the injection molding machine set on the injection molding system in modeling molded part
Normally closed switch K5, the input terminal of the second normally closed switch K5 are connect with the output end of the component senses circuit, and described second
Power circuit of the normally closed switch K5 when receiving second inductive signal, to turn off the injection molding machine, the note described in this way
Molding machine can not work.
Referring to Fig. 1, in the present embodiment, component missing detection circuit further includes reset switch in the injection molding part
SB, the input terminal of the reset switch SB are connect with the output end of the power circuit 100, the output end of the reset switch SB
It is connect with the input terminal of the action sensing circuit 200, the reset switch SB stops to control the action sensing circuit 200
It only works, in this way after operating the reset switch SB, the action sensing circuit 200 and the component senses circuit can stop
Work, alarm can stop resuming work with the injection molding machine.
The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model,
It is all under the inventive concept of the utility model, equivalent structure made based on the specification and figures of the utility model becomes
It changes, or directly/be used in other related technical areas indirectly and be included in the scope of patent protection of the utility model.
Claims (10)
1. component lacks detection circuit in a kind of injection molding part, it is used for injection molding system, the injection molding system to include
For switching between the initial position and Working position on injection molding system the component of injection molding part is transferred to institute
State the transfer device of Working position, which is characterized in that component missing detection circuit includes: in the injection molding part
Power circuit；
Action sensing circuit is connect with the power circuit, to be moved to the initial bit sensing the transfer device
It is triggered when setting and exports the first inductive signal；And
Component senses circuit, and the power circuit and the action sensing circuit connection, to receive first sense
When induction signal, sense the component of the Working position, in the component missing for sensing the Working position, triggering and export the
Two inductive signals, so that the injection molding system stops working.
2. component lacks detection circuit in injection molding part as described in claim 1, which is characterized in that the component senses electricity
Road includes the delay circuit and sensing circuit being in parallel, the output of the input terminal of the delay circuit and the action sensing circuit
End connection, the output end of the delay circuit are the output end of the component senses circuit, the input terminal of the sensing circuit with
The output end of the action sensing circuit connects, and the input terminal of the output end of the sensing circuit and the action sensing circuit connects
It connects；
The delay circuit is to be delayed when receiving first inductive signal；
Component of the sensing circuit when receiving first inductive signal, to sense the Working position, described
When sensing the component of the Working position in the delay time of delay circuit without missing, triggers and exports third inductive signal,
The action sensing circuit is controlled to stop working；
The delay circuit delay time then, delay circuit triggering and export second inductive signal.
3. component lacks detection circuit in injection molding part as claimed in claim 2, which is characterized in that the action sensing electricity
Road includes the first normally closed switch, contact switch and the first functional switch, and the input terminal of first normally closed switch is the movement
The output end of the input terminal of sensing circuit, first normally closed switch is connect with the input terminal of the contact switch, the contact
The output end of switch is connect with the input terminal of first functional switch, and the output end of first functional switch is the movement
The output end of sensing circuit；
First normally closed switch is when receiving the third inductive signal, to turn off the action sensing circuit；
The contact switch includes the second contact set on the first contact of the transfer device and set on the initial position,
When the transfer device is moved to the initial position, first conductive contact and second conductive contact are contacted and are led
It is logical；
First functional switch is to trigger and export first inductive signal in action sensing circuit conducting.
4. component lacks detection circuit in injection molding part as claimed in claim 3, which is characterized in that the action sensing electricity
Road further includes the first normal open switch being in parallel with the contact switch, the input terminal of first normal open switch and described first
The output end of functional switch connects；
First normal open switch is to the conducting when receiving first inductive signal.
5. component lacks detection circuit in injection molding part as claimed in claim 2, which is characterized in that the delay circuit packet
The second normal open switch and the time relay are included, the input terminal of second normal open switch is the input terminal of the delay circuit, institute
The output end for stating the second normal open switch is connect with the input terminal of the time relay, and the output end of the time relay is institute
State the output end of delay circuit；
Second normal open switch is to the conducting when receiving first inductive signal；
The time relay to second normal open switch conducting when, be delayed, and delay time then, triggering
And export second inductive signal.
6. component lacks detection circuit in injection molding part as claimed in claim 2, which is characterized in that the sensing circuit packet
The second functional switch and component inductor are included, the input terminal of the component inductor is the input terminal of the sensing circuit, described
The output end of component inductor is connect with the input terminal of second functional switch, and the output end of second functional switch is institute
State the output end of sensing circuit, wherein the component of the component inductor and the Working position is in be arranged in a one-to-one correspondence；
The component inductor is to sense the portion of the corresponding Working position when receiving first inductive signal
Part, the conducting when the component for sensing the Working position is without missing；
Second functional switch is to trigger and export the third inductive signal in component inductor conducting.
7. component lacks detection circuit in injection molding part as described in claim 1, which is characterized in that the injection molding part
Middle component missing detection circuit further includes reset switch, and the output end of the input terminal of the reset switch and the power circuit connects
It connects, the output end of the reset switch is connect with the input terminal of the action sensing circuit, and the reset switch is to control
Action sensing circuit is stated to stop working.
8. component lacks detection circuit in injection molding part as described in claim 1, which is characterized in that the injection molding part
Middle component missing detection circuit further includes the warning circuit with the power circuit and the component senses circuit connection, the report
The input terminal of alert circuit is connect with the output end of the component senses circuit, and the warning circuit is to receive described second
It is connected when inductive signal；And/or
Component missing detection circuit further includes the power supply of the injection molding machine set on the injection molding system in the injection molding part
Second normally closed switch of circuit, the input terminal of second normally closed switch are connect with the output end of the component senses circuit, institute
State power circuit of second normally closed switch when receiving second inductive signal, to turn off the injection molding machine.
9. a kind of component lacks detection device, which is characterized in that including injection molding described in claim 1 to 8 any one
Component lacks detection circuit in part.
10. a kind of injection molding system characterized by comprising
Injection molding machine；
Transfer device, for switching between initial position and Working position the component of injection molding part is transferred to described add
Station is set；And
Component lacks detection device, lacks detection device for component as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821821639.6U CN208914549U (en) | 2018-11-05 | 2018-11-05 | Component missing detection circuit, device and injection molding system in injection molding part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821821639.6U CN208914549U (en) | 2018-11-05 | 2018-11-05 | Component missing detection circuit, device and injection molding system in injection molding part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208914549U true CN208914549U (en) | 2019-05-31 |
Family
ID=66711732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821821639.6U Active CN208914549U (en) | 2018-11-05 | 2018-11-05 | Component missing detection circuit, device and injection molding system in injection molding part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208914549U (en) |
-
2018
- 2018-11-05 CN CN201821821639.6U patent/CN208914549U/en active Active
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