CN201132375Y - Multiplex thermocouple signal switching device for controller of plastic jetting-moulding machine - Google Patents
Multiplex thermocouple signal switching device for controller of plastic jetting-moulding machine Download PDFInfo
- Publication number
- CN201132375Y CN201132375Y CNU2007201915681U CN200720191568U CN201132375Y CN 201132375 Y CN201132375 Y CN 201132375Y CN U2007201915681 U CNU2007201915681 U CN U2007201915681U CN 200720191568 U CN200720191568 U CN 200720191568U CN 201132375 Y CN201132375 Y CN 201132375Y
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- signal
- thermocouple
- controller
- switching apparatus
- photo mos
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Abstract
The utility model provides a multipath thermoelectric pair signal switching device for the control of an injection molding control. A plurality of Photo MOS relays are adopted to serve as switching elements, two groups of contact points correspond to one thermoelectric pair signal, the control terminals are connected in parallel or in series and are controlled by the same signal. The multipath thermoelectric pair signal switching device has the advantages that the switching life is not limited, the device is not damaged easily due to the strong current intrusion, and the control terminals and the thermoelectric pair signal are separated electrically.
Description
[affiliated technical field]
The utility model relates to a kind of multi-channel thermocouple signal switching apparatus, especially is applied in the controller of plastic injection molding, selects to switch the multi-channel thermocouple signal, makes the multi-channel thermocouple signal share a temperature signal converted measurement circuit.
[background technology]
In controller of plastic injection molding, generally need to measure barrel temperature signal more than 3 tunnel, this temperature signal is generally K type thermocouple.For saving the circuit cost of controller of plastic injection molding, generally adopt the multi-channel thermocouple signal switching apparatus to cooperate the structure of temperature signal converted measurement circuit, promptly the multi-channel thermocouple signal is shared a temperature signal converted measurement circuit by signal switching apparatus.Controller of plastic injection molding adopts the sort circuit structure, signal switching apparatus has following work characteristics: the signal change action is frequent, in 8 the tunnel, 12 seconds was to take turns switching cycle, service time 5 years, every day, every road switching times was 7200 times, the switching times in 1 year may reach more than 2,000,000 times, and the life-cycle switching times may reach more than 1,000 ten thousand times; Thermocouple and electric heater are installed on the barrel together, may have forceful electric power and invade.At present, the multi-channel thermocouple signal switching apparatus in the controller of plastic injection molding generally adopts mechanical relay or cmos analog switch device as switching part.If use mechanical relay, its appliance life are generally 10～5,000,000 times, are difficult to satisfy and use the life-cycle requirement under the above-mentioned condition.If use the cmos analog switch device, as the similar device of CD4052, the highest signal input voltage is no more than 20V, when the forceful electric power of electric heater when thermocouple is introduced, be easy to be burnt out puncture, and when generally using the cmos analog switch device, also need extra photoelectric isolating circuit as switching part.
[summary of the invention]
Switching age limit when selecting mechanical relay for use in order to overcome switching part and the forceful electric power when selecting the cmos analog switch device for use damage problem, the utility model provides a kind of does not have the multi-channel thermocouple signal switching apparatus that switches age limit and can resist the forceful electric power intrusion, and is electrical isolation between this device switching controls end and the double-throw contact.
The technical scheme that its technical problem that solves the utility model adopts is: select a plurality of 200V or above load voltage for use, open type Photo MOS relay constitutes the signal switching part, two groups of corresponding thermocouples in contact, each pin of two groups of contacts is just connecting thermocouple respectively, the negative signal pin, the output bus that each another pin of two groups of contacts is connected respectively to this signal switching apparatus just, on the negative signal, the control end of two groups of contacts can be connected and be gone here and there a current-limiting resistance again, link one then and select switching signal, also can connect a current-limiting resistance respectively, same selection switching signal is received in parallel connection more then, selecting under the switching signal control, conducting simultaneously or shutoff are switched on or switched off the output bus of thermocouple signal and this signal switching apparatus.Photo MOS relay claims MOSFET relay, solid-state relay again, is characterized in that control end is that light emitting diode, output contact use switch mosfet, and the light that is sent by light emitting diode triggers switch mosfet or on-off.This programme can be a single channel with Photo MOS relay, also can be two-way, so-called two-way be with the integrating of two single channel, independent LED control break-make is respectively arranged, be the equal of the Photo MOS relay of two single channel.Utilize Photo MOS relay to constitute this multi-channel thermocouple signal switching apparatus as switching part, because Photo MOS relay is an electronic contact, therefore exists hardly and switch the life-span, promptly this device does not have the age limit of switching.And the Photo MOS relay load voltage of selecting for use be 200V or more than, therefore when forceful electric power invades this device, can well resist not being damaged.And being that photoelectricity is isolated between the control end of Photo MOS relay and the contact, is electrical isolation between control end of this signal switching apparatus and the thermocouple signal promptly.
The beneficial effects of the utility model are that this multi-channel thermocouple signal switching apparatus in the controller of plastic injection molding does not have the switching age limit again, can not invade easily because of forceful electric power yet and damage.
[description of drawings]
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the utility model controller of plastic injection molding multi-channel thermocouple signal switching apparatus embodiment one circuit theory diagrams.
Fig. 2 is the utility model controller of plastic injection molding multi-channel thermocouple signal switching apparatus embodiment two circuit theory diagrams.
Fig. 3 is that the utility model controller of plastic injection molding is used theory diagram with multi-channel thermocouple signal switching apparatus and controller of plastic injection molding.
[specific embodiment]
In Fig. 1, K1_A～Kn_A, K1_B～Kn_B are Photo MOS relay, according to the suitable way of controller of plastic injection molding needs configuration.Kn_A and Kn_B form one group, the anode of the contact one termination thermocouple of Photo MOS relay K n_A, the output VOUT+ of another this signal switching apparatus of termination, the negative terminal of the contact one termination thermocouple of Photo MOS relay K n_B, the output VOUT-of another this signal switching apparatus of termination.The control end series limiting resistor Rn_A of Photo MOS relay K n_A with the Photo MOS relay K n_B parallel connection of series limiting resistor Rn_B equally, is controlled by same switching signal then.
In Fig. 2, K1_A～Kn_A, K1_B～Kn_B are Photo MOS relay, according to the suitable way of controller of plastic injection molding needs configuration.Kn_A and Kn_B form one group, the anode of the contact one termination thermocouple of Photo MOS relay K n_A, the output VOUT+ of another this signal switching apparatus of termination, the negative terminal of the contact one termination thermocouple of Photo MOS relay K n_B, the output VOUT-of another this signal switching apparatus of termination.The control light emitting diode series connection of the control light emitting diode of Photo MOS relay K n_A and Photo MOS relay K n_B, the current-limiting resistance of going here and there is again received a switch-over control signal then.
In Fig. 3, the multi-channel thermocouple signal is linked into this signal switching apparatus (2), also inserts switch-over control signal (3) simultaneously, and the output signal of this signal switching apparatus is connected to thermocouple signal converted measurement module (1).By switch-over control signal (3) control gating road thermocouple signal, promptly export certain thermocouple signal to thermocouple signal converted measurement module (1) during work, cooperate the measurement of finishing the multi-channel thermocouple temperature signal from this signal switching apparatus (2).
Claims (3)
1, a kind of controller of plastic injection molding multi-channel thermocouple signal switching apparatus, it is characterized in that: switching part is selected a plurality of Photo MOS relays for use, two groups of corresponding thermocouples in contact, each pin of two groups of contacts is just connecting thermocouple respectively, the negative signal pin, the output bus that each another pin of two groups of contacts is connected respectively to this signal switching apparatus just, on the negative signal, the control end of two groups of contacts can be connected and be gone here and there a current-limiting resistance again, link one then and select switching signal, also can connect a current-limiting resistance respectively, same selection switching signal is received in parallel connection more then, selecting under the switching signal control, conducting simultaneously or shutoff are switched on or switched off the output bus of thermocouple signal and this signal switching apparatus.
2, controller of plastic injection molding according to claim 1 multi-channel thermocouple signal switching apparatus is characterized in that: used PhotoMOS relay basic parameter is 200V or above load voltage, open type, can be single channel or two-way.
3, controller of plastic injection molding according to claim 2 multi-channel thermocouple signal switching apparatus, it is characterized in that: used two-way Photo MOS relay is that the Photo MOS relay by two single channel simply integrates, independently control signal is respectively arranged, and is the equal of two independently Photo MOS relays.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201915681U CN201132375Y (en) | 2007-11-14 | 2007-11-14 | Multiplex thermocouple signal switching device for controller of plastic jetting-moulding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201915681U CN201132375Y (en) | 2007-11-14 | 2007-11-14 | Multiplex thermocouple signal switching device for controller of plastic jetting-moulding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201132375Y true CN201132375Y (en) | 2008-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201915681U Expired - Lifetime CN201132375Y (en) | 2007-11-14 | 2007-11-14 | Multiplex thermocouple signal switching device for controller of plastic jetting-moulding machine |
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| Country | Link |
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| CN (1) | CN201132375Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110681835A (en) * | 2019-11-18 | 2020-01-14 | 华北理工大学 | Continuous casting mold flux temperature control device |
| CN116587256A (en) * | 2023-07-17 | 2023-08-15 | 江苏新惕姆智能装备有限公司 | Valve island for robot integrated clamp |
-
2007
- 2007-11-14 CN CNU2007201915681U patent/CN201132375Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110681835A (en) * | 2019-11-18 | 2020-01-14 | 华北理工大学 | Continuous casting mold flux temperature control device |
| CN110681835B (en) * | 2019-11-18 | 2023-09-08 | 天津理工大学 | Continuous casting mold flux temperature control device |
| CN116587256A (en) * | 2023-07-17 | 2023-08-15 | 江苏新惕姆智能装备有限公司 | Valve island for robot integrated clamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HANGZHOU KEQIANG INTELLIGENT CONTROL SYSTEMS CO., Free format text: NEW ADDRESS: 3/F, BUILDING C, XIDOUMEN INDUSTRIAL PARK, NO.22, XIDOUMEN ROAD, XIHU DISTRICT, HANGZHOU CITY, ZHEJIANG PROVINCE, ZIP CODE:310012 |
|
| CP02 | Change in the address of a patent holder |
Address after: Building 3, building C, West Doumen Industrial Park, 22 West Road, Zhejiang, Hangzhou, Xihu District 310012, China Patentee after: Hangzhou Keqiang Intelligent Control System Co., Ltd. Address before: Xihu District Hangzhou City, Zhejiang Province, Ma Cheng Road, No. 36, zip code: 310012 Patentee before: Hangzhou Keqiang Intelligent Control System Co., Ltd. |
|
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG KEQIANG INTELLIGENT CONTROL SYSTEM CO., L Free format text: FORMER NAME: |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 3, building 310012, building C, West Doumen Industrial Park, 22 West Road, Hangzhou, Zhejiang, Xihu District, China Patentee after: Zhejiang Keqiang Intelligent Control System Co., Ltd. Address before: 3, building 310012, building C, West Doumen Industrial Park, 22 West Road, Hangzhou, Zhejiang, Xihu District, China Patentee before: Hangzhou Keqiang Intelligent Control System Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20081015 |