CN203705857U - Digital electronic ruler signal transfer junction box of injection molding machine - Google Patents
Digital electronic ruler signal transfer junction box of injection molding machine Download PDFInfo
- Publication number
- CN203705857U CN203705857U CN201320680001.6U CN201320680001U CN203705857U CN 203705857 U CN203705857 U CN 203705857U CN 201320680001 U CN201320680001 U CN 201320680001U CN 203705857 U CN203705857 U CN 203705857U
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- China
- Prior art keywords
- circuit
- electronic ruler
- signal
- power supply
- cpu
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- Expired - Lifetime
Links
- 238000001746 injection moulding Methods 0.000 title abstract description 5
- 238000004891 communication Methods 0.000 claims abstract description 15
- 238000005070 sampling Methods 0.000 claims abstract description 13
- 238000001914 filtration Methods 0.000 claims description 19
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 230000003278 mimic effect Effects 0.000 claims description 6
- 230000009466 transformation Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 238000002955 isolation Methods 0.000 abstract 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
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- Control By Computers (AREA)
Abstract
The utility model relates to a digital electronic ruler signal transfer junction box of an injection molding machine. The digital electronic ruler signal transfer junction box comprises an electronic ruler signal input terminal, a filter circuit, a sampling holding circuit, an AD converting circuit, an isolation circuit, a CPU, a communication circuit, a power supply circuit, a power supply terminal and a communication bus terminal, after electronic ruler signals are connected to the transfer junction box, and the electronic ruler signals are first processed via the filter circuit to filter interference signals, converted to digital signals via a signal converting circuit in the transfer junction box after AD conversion, and transmitted to a central controller at the far end via a bus manner. The digital electronic ruler signal transfer junction of the injection molding machine is advantaged by low cost, high precision, and great anti-interference ability.
Description
Technical field
The utility model is applicable to injection machine electronic ruler position control system, is specifically related to a kind of large size plastic jetting-moulding device position control digitalized electron chi the signal is far passed patchcord box.
Background technology
In injection moulding production run, most important to the control of moving component position, its degree of accuracy directly affects the quality of product.Therefore, the degree of accuracy of raising injection machine position control is to improve an importance of injection machine quality.
Current adopt electronic ruler realize in the injection machine system of position control, the physical distance of electronic ruler and controller is distant, and the acquisition mode generally adopting is, directly the simulating signal of electronic ruler is transferred to controller end by data line, then carries out the operations such as signals collecting, conversion and calculating at controller end.Because simulating signal is easy to be subject to the impact of site environment in long-distance transmissions process, the data error that therefore controller end gathers is larger, and electronic ruler location presentation is not accurate enough, has reduced the control accuracy of injection machine.
Summary of the invention
The purpose of this utility model is the above-mentioned deficiency for prior art, and a kind of injection machine digitalized electron chi signal converting line box is provided.
The utility model solves the scheme that its technical matters adopts:
The utility model comprises electronic ruler signal input terminal, filtering circuit, sampling hold circuit, A/D convertor circuit, buffer circuit, CPU, communicating circuit, power circuit, power supply terminal and communication bus terminal.
Electronic ruler signal input terminal is for connecting electronic chi, and each electronic ruler is joined 3 terminals, is respectively VCC, GND and AV, and wherein VCC and GND are for powering to electronic ruler, and AV is electronic ruler output, is voltage or current signal, represents value corresponding to diverse location.
Filtering circuit uses active low-pass filter, and electronic ruler signal is done to filtering processing.
Sampling hold circuit carries out latch to the input value of simulating signal in the time of sampling, for the voltage signal of the real-time translation filtering circuit output of A/D convertor circuit, obtains 16 above AD transformation results.
Buffer circuit is kept apart the mimic channel of the digital signal of CPU, communicating circuit and electronic ruler Signal Collection and amplify by optocoupler, prevents the interference of digital signal to mimic channel.
CPU is responsible for reading the result of A/D convertor circuit, carries out after digital filtering, and communication control circuit sends to the controller of far-end.
Communicating circuit adopts CAN bus communication circuit, is controlled and is initiatively sent the electronic ruler position data collecting by CPU, is transported to remote controller by communication bus terminal.
Power circuit is for device power supply, power supply is inputted from power supply terminal, for positive-negative power, give CPU and communicating circuit power supply, produce the new insulating power supply in a road for electronic ruler signal input terminal, filtering circuit, sampling hold circuit and A/D convertor circuit power supply by power circuit.
This patchcord box is installed on electronic ruler place nearby, and the positional information of electronic ruler is converted to digital signal, by communication bus to remote controller transmitting digital electronic ruler information.
The utility model cost is low, precision is high, antijamming capability is strong.
Brief description of the drawings
Fig. 1 is digitalized electron chi the signal is far passed patchcord box structural drawing.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.
As shown in Figure 1, the utility model increases a special digitalized electron chi the signal is far passed patchcord box in injection machine injection moulding, be to possess the patchcord box that electronic ruler signals collecting, conversion, change are sent, comprise: electronic ruler signal input terminal 1, filtering circuit 2, sampling hold circuit 3, A/D convertor circuit 4, buffer circuit 5, CPU 6, communicating circuit 7, power circuit 8, communication bus terminal 10, power supply terminal 9.This patchcord box is arranged near electronic ruler installation site nearby, and the output of electronic ruler signal is connected to the signal input terminal of patchcord box, realizes and closely gathers electronic ruler signal.After electronic ruler signal access patchcord box, first through filtering circuit processing, filtering interference signals.Through changing into by the signaling conversion circuit of patchcord box inside the central control unit that is transported to far-end after digital signal by bus mode after AD conversion.Patchcord box of the present utility model can multiplely be installed simultaneously, between patchcord box, can connect and compose digitalized electron chi the signal is far passed patchcord box network by bus.
Electronic ruler signal input terminal is for connecting electronic chi, each electronic ruler is joined 3 terminals, just be respectively VCC(power supply), GND(power-), AV(signal), VCC and GND are for powering to electronic ruler, AV is electronic ruler output, for voltage or current signal, represent value corresponding to diverse location, it is that GND is between VCC that AV exports the scope being converted to after voltage.
Filtering circuit uses active low-pass filter, and electronic ruler signal is done to filtering processing.
Sampling hold circuit carries out latch to the input value of simulating signal in the time of sampling, for the voltage signal of the real-time conversion electron chi of A/D convertor circuit signal filter circuit output, obtains 16 above AD transformation results.
Buffer circuit is kept apart the digital signal such as cpu circuit, the communicating circuit mimic channel relevant to electronic ruler Signal Collection and amplify by optocoupler, prevents the interference of digital signal to mimic channel.
CPU is responsible for reading the result of A/D convertor circuit, carries out after digital filtering, and communication control circuit sends to the controller of far-end.
Communicating circuit adopts CAN bus communication circuit (can be also Ethernet etc.), is controlled and is initiatively sent the electronic ruler position data collecting by CPU, is transported to remote controller by communication bus terminal.While having multiple patchcord boxes to install together, also form teletransmission network by this communicating circuit.
Power circuit is for device power supply, power supply is inputted from power supply terminal, for positive-negative power, give CPU and communicating circuit power supply, produce the new insulating power supply in a road for electronic ruler signal input terminal, filtering circuit, sampling hold circuit and A/D convertor circuit power supply by power circuit.
Claims (1)
1. an injection machine digitalized electron chi signal converting line box, comprise electronic ruler signal input terminal (1), filtering circuit (2), sampling hold circuit (3), A/D convertor circuit (4), buffer circuit (5), CPU(6), communicating circuit (7), power circuit (8), power supply terminal (9) and communication bus terminal (10), it is characterized in that:
Electronic ruler signal input terminal (1) is for connecting electronic chi, and each electronic ruler is joined 3 terminals, is respectively VCC, GND and AV, wherein VCC and GND are for powering to electronic ruler, AV is electronic ruler output, is voltage or current signal, represents value corresponding to diverse location;
Filtering circuit (2) uses active low-pass filter, and electronic ruler signal is done to filtering processing;
Sampling hold circuit (3) carries out latch to the input value of simulating signal in the time of sampling, for the voltage signal of A/D convertor circuit (4) translation filtering circuit (2) output in real time, obtains 16 above AD transformation results;
Buffer circuit (5) by optocoupler by CPU(6), the digital signal of communicating circuit (7) and the mimic channel of electronic ruler Signal Collection and amplify keep apart, and prevents the interference of digital signal to mimic channel;
CPU(6) be responsible for reading the result of A/D convertor circuit (4), carry out after digital filtering, communication control circuit (7) sends to the controller of far-end;
Communicating circuit (7) adopts CAN bus communication circuit, by CPU(6) control the electronic ruler position data that initiatively transmission collects, be transported to remote controller by communication bus terminal (10);
Power circuit (8) is for installing power supply, power supply is inputted from power supply terminal (9), for positive-negative power, give CPU(6) and communicating circuit (7) power supply, the new insulating power supply in a road produced for electronic ruler signal input terminal (1), filtering circuit (2), sampling hold circuit (3) and A/D convertor circuit (4) power supply by power circuit (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320680001.6U CN203705857U (en) | 2013-10-31 | 2013-10-31 | Digital electronic ruler signal transfer junction box of injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320680001.6U CN203705857U (en) | 2013-10-31 | 2013-10-31 | Digital electronic ruler signal transfer junction box of injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203705857U true CN203705857U (en) | 2014-07-09 |
Family
ID=51056264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320680001.6U Expired - Lifetime CN203705857U (en) | 2013-10-31 | 2013-10-31 | Digital electronic ruler signal transfer junction box of injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203705857U (en) |
-
2013
- 2013-10-31 CN CN201320680001.6U patent/CN203705857U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140709 |