CN107856410B - Automatic fault alarm circuit for corrugated paper printer - Google Patents
Automatic fault alarm circuit for corrugated paper printer Download PDFInfo
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- CN107856410B CN107856410B CN201711223989.2A CN201711223989A CN107856410B CN 107856410 B CN107856410 B CN 107856410B CN 201711223989 A CN201711223989 A CN 201711223989A CN 107856410 B CN107856410 B CN 107856410B
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- normally open
- alternating current
- current contactor
- servo
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- 230000002265 prevention Effects 0.000 claims abstract description 16
- 238000012544 monitoring process Methods 0.000 claims abstract description 7
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/04—Tripping devices or stop-motions
- B41F33/12—Tripping devices or stop-motions for starting or stopping the machine as a whole
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/0009—Central control units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/0018—Protection means against injury to the operator
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
The invention relates to the technical field of printer industrial control, and discloses an automatic fault alarm circuit of a corrugated paper printer, which lays a foundation for realizing rapid fault processing. The automatic alarm circuit of the present invention comprises: the alarm information sensor is used for collecting alarm information; the monitoring center is connected with each alarm information sensor, and is connected with a voice alarm which is deployed on the site of the corrugated paper printing machine and is pre-recorded with fault voice information, so that when the information sensors acquire the alarm information, the voice alarm is informed to automatically alarm; and the ring alarm HA1 is arranged in the power supply sequence start-stop misoperation prevention circuit of the corrugated board printer and is used for generating a driving signal to be transmitted to the monitoring center after being electrified so as to wake up the monitoring center to switch from a dormant state to a normal monitoring state.
Description
Technical Field
The invention relates to the technical field of printer control, in particular to an automatic fault alarm circuit of a corrugated paper printer.
Background
Various faults or warnings can occur in the using process of the equipment, if the faults cannot be quickly and properly solved, the equipment can be stopped, even the service life of the equipment is seriously influenced, economic loss is caused for equipment users, after-sales service cost is increased for equipment manufacturers, and on-site personnel can intuitively and quickly find out the faults, so that the problems that the equipment is failed and is restored to a normal production state are solved all the time.
Disclosure of Invention
The invention aims to disclose an automatic fault alarm circuit of a corrugated paper printer, which lays a foundation for realizing rapid fault processing.
In order to achieve the above purpose, the invention discloses an automatic fault alarm circuit of a corrugated paper printer, comprising:
the alarm information sensor is used for collecting alarm information;
the monitoring centers are connected with the alarm information sensors and are connected with voice alarms which are deployed on the corrugated paper printing machine and pre-record fault voice information, so that when the alarm information is acquired by the information sensors, the voice alarms are informed to automatically alarm; and
the ring alarm HA1 is arranged in the power supply sequence start-stop misoperation prevention circuit of the corrugated board printer and is used for generating a driving signal after being electrified and transmitting the driving signal to the monitoring center so as to wake up the monitoring center to switch from a dormant state to a normal monitoring state;
wherein, corrugated container board printer power sequence opens stops and prevents maloperation circuit still includes:
nodes 1,3, 5,7, 9,11 and 13 distributed between the L end and the N end, wherein the nodes are connecting points between two circuit elements; the circuit element includes: the power supply start-stop key selection switch SA1 is provided with two linked normally open contacts; the main power supply alternating current contactor KM1 is provided with three linked normally open contacts and a coil; the main power supply starting button SB2 is provided with two linked normally open contacts; the servo power supply alternating current contactor KM2 is provided with two linked normally open contacts and a coil; servo power stop button SB3; a servo power supply start button SB4; total power indicator HL1 and servo power indicator HL2;
each node divides a circuit between the L end and the N end into a ring branch, a total power supply indication branch, a total power supply starting branch, a servo power supply indication branch and a servo power supply starting branch; two nodes corresponding to two ends are used as element marks, and the power supply sequence start-stop misoperation prevention circuit of the corrugated board printer specifically comprises:
the first normally open contact (L, 1) of the power supply start-stop key selection switch SA1 is connected in parallel with the first normally open contact (L, 1) of the total power supply alternating current contactor KM 1;
the first normally open contact (L, 1) of the main power alternating current contactor KM1 is connected in series with the first normally open contact (1, 3) of the main power starting button SB2 and the bell alarm HA1 (3, N);
the normally closed contacts (1, 5) of the total power supply stop button SB1 are connected in parallel with the first normally open contacts (1, 5) of the servo power supply alternating current contactor KM 2;
the second normally open contacts (5, 7) of the main power supply starting button SB2 are connected in parallel with the second normally open contacts (5, 7) of the main power supply alternating current contactor KM 1;
the coils (7, N) of the total power alternating current contactor KM1 are connected with the total power indicator lamp HL1 (7, N) in parallel;
the normally closed contacts (1, 5) of the main power supply stop button SB1 are connected in series with the second normally open contacts (5, 7) of the main power supply start button SB2 and the main power supply indicator lamp HL1 (7, N);
the first normally open contact (L, 1) of the power supply start-stop key selection switch SA1 is connected in series with the first normally open contact (1, 5) of the servo power supply alternating current contactor KM2, the second normally open contact (5, 7) of the total power supply alternating current contactor KM1 and the coils (7, N) of the total power supply alternating current contactor KM 1;
the second normally open contacts (9, 11) of the power supply start-stop key selection switch SA1 are connected in parallel with the normally closed contacts (9, 11) of the servo power supply stop button SB3;
the normally open contacts (11, 13) of the servo power supply starting button SB4 are connected in parallel with the second normally open contacts (11, 13) of the servo power supply alternating current contactor KM 2;
the servo power supply indicator lamp HL2 (13, N) is connected with the coils (13, N) of the servo power supply alternating current contactor KM2 in parallel;
the third normally open contact (1, 9) of the total power alternating current contactor KM1 is connected in series with the normally closed contacts (9, 11) of the servo power stop button SB3, the normally open contacts (11, 13) of the servo power start button SB4 and the servo power indicator lamp HL2 (13, N);
the second normally open contacts (9, 11) of the power on-off key selection switch SA1 are connected in series with the second normally open contacts (11, 13) of the servo power alternating current contactor KM2 and the coils (13, N) of the servo power alternating current contactor KM 2.
Therefore, the monitoring center is synchronously started along with the starting of the power sequence start-stop misoperation prevention circuit of the corrugated board printer (preferably, the power sequence start-stop misoperation prevention circuit of the corrugated board printer is switched back to a dormant state along with the power failure of the HA 1), and the power sequence start-stop misoperation prevention circuit of the corrugated board printer HAs the misoperation prevention and sequence start-stop functions, so that the electric control of the corrugated board printer is safer and more efficient, the equipment damage, the personal safety and the product waste caused by the unintentional misoperation of the power supply are avoided, and therefore, the power misoperation prevention circuit can also remove the power misoperation fault from the monitored fault types, thereby increasing the accuracy and the mobility of fault alarm and laying a foundation for realizing rapid fault processing.
The invention will be described in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
fig. 1 is a circuit diagram for preventing misoperation of power supply sequence start-stop of a corrugated board printer according to a preferred embodiment of the invention.
Detailed Description
Embodiments of the invention are described in detail below with reference to the attached drawings, but the invention can be implemented in a number of different ways, which are defined and covered by the claims.
Example 1
The embodiment discloses automatic alarm circuit of corrugated paper printing machine trouble, includes:
the alarm information sensor is used for collecting alarm information;
the monitoring centers are connected with the alarm information sensors and are connected with voice alarms which are deployed on the corrugated paper printing machine and pre-record fault voice information, so that when the alarm information is acquired by the information sensors, the voice alarms are informed to automatically alarm; and
the ring alarm HA1 is arranged in the power supply sequence start-stop misoperation prevention circuit of the corrugated board printer and is used for generating a driving signal after being electrified and transmitting the driving signal to the monitoring center so as to wake up the monitoring center to switch from a dormant state to a normal monitoring state.
Optionally, the monitoring center of the embodiment may be a third party device independent of the corrugated paper printer, and may also be integrated on an existing corrugated paper printer industrial personal computer; the software implementation part is a technology well known to those skilled in the art, and the implementation of voice broadcasting is similar to the arrival broadcasting of rail transit such as buses and the like, and is not repeated.
In this embodiment, referring to fig. 1, a circuit for preventing misoperation of power sequence start-stop of a corrugated board printer is shown by dotted lines in fig. 1, for example: the dashed line of SA1 indicates that the key selection switch has two normally open contacts which are operated simultaneously; also for example: SB2 and HL1 are connected together by a dotted line, and indicate that the total power indicator lamp HL1 is assembled with the total power starting button SB2, called a lamp button, and is started, an indication is given, and the indication lamp is turned on after being pressed. As shown in fig. 1, the power supply sequential start-stop misoperation prevention circuit structure of the corrugated board printer of the embodiment is as follows:
nodes 1,3, 5,7, 9,11 and 13 distributed between the L end and the N end, wherein the nodes are connection points between two circuit elements; the circuit element includes: the power supply start-stop key selection switch SA1 is provided with two linked normally open contacts; the main power supply alternating current contactor KM1 is provided with three linked normally open contacts and a coil; the main power supply starting button SB2 is provided with two linked normally open contacts; the servo power supply alternating current contactor KM2 is provided with two linked normally open contacts and a coil; servo power stop button SB3; a servo power supply start button SB4; a ringtone alarm HA1; total power indicator HL1 and servo power indicator HL2;
each node divides a circuit between the L end and the N end into a ring branch, a total power indication branch, a total power starting branch, a servo power indication branch and a servo power starting branch; the power supply sequence start-stop misoperation prevention circuit for the corrugated board printer takes two nodes corresponding to two ends as element labels, and specifically comprises:
the first normally open contact (L, 1) of the power supply start-stop key selection switch SA1 is connected with the first normally open contact (L, 1) of the main power supply alternating current contactor KM1 in parallel;
the first normally open contact (L, 1) of the main power alternating current contactor KM1 is connected in series with the first normally open contact (1, 3) of the main power starting button SB2 and the bell alarm HA1 (3, N);
the normally closed contacts (1, 5) of the main power supply stop button SB1 are connected in parallel with the first normally open contacts (1, 5) of the servo power supply alternating current contactor KM 2;
the second normally open contacts (5, 7) of the main power supply starting button SB2 are connected in parallel with the second normally open contacts (5, 7) of the main power supply alternating current contactor KM 1;
the coils (7, N) of the total power alternating current contactor KM1 are connected in parallel with the total power indicator lamp HL1 (7, N);
the normally closed contacts (1, 5) of the main power supply stop button SB1 are connected in series with the second normally open contacts (5, 7) of the main power supply start button SB2 and the main power supply indicator lamp HL1 (7, N);
the first normally open contact (L, 1) of the power supply start-stop key selection switch SA1 is connected in series with the first normally open contact (1, 5) of the servo power supply alternating current contactor KM2, the second normally open contact (5, 7) of the total power supply alternating current contactor KM1 and the coils (7, N) of the total power supply alternating current contactor KM 1;
the second normally open contacts (9, 11) of the power supply start-stop key selection switch SA1 are connected in parallel with the normally closed contacts (9, 11) of the servo power supply stop button SB3;
the normally open contacts (11, 13) of the servo power supply starting button SB4 are connected in parallel with the second normally open contacts (11, 13) of the servo power supply alternating current contactor KM 2;
the servo power supply indicator lamp HL2 (13, N) is connected with coils (13, N) of the servo power supply alternating current contactor KM2 in parallel;
the third normally open contact (1, 9) of the main power alternating current contactor KM1 is connected in series with the normally closed contacts (9, 11) of the servo power stop button SB3, the normally open contacts (11, 13) of the servo power start button SB4 and the servo power indicator lamp HL2 (13, N);
the second normally open contacts (9, 11) of the power on-off key selection switch SA1 are connected in series with the second normally open contacts (11, 13) of the servo power alternating-current contactor KM2 and the coils (13, N) of the servo power alternating-current contactor KM 2.
Based on the circuit shown in fig. 1, the anti-misoperation control includes:
the power supply is started, the power supply start-stop key selection switch SA1 is in an on position, namely, the first normally open contact (L, 1) and the second normally open contact (9, 11) of the power supply start-stop key selection switch SA1 are closed, and the power supply start operation is effectively executed.
The power supply is stopped, and the power supply start-stop key selection switch SA1 is at the closed position, namely the first normally open contact (L, 1) and the second normally open contact (9, 11) of the power supply start-stop key selection switch SA1 are disconnected, so that the stopping operation of the power supply is effectively executed.
The start-stop sequence operation control based on fig. 1 specifically includes:
the first normally open contact (L, 1) and the second normally open contact (9, 11) of the power supply start-stop key selection switch SA1 are closed, the first normally open contact (L, 1) of the total power supply start-stop key selection switch SA1 is closed by pressing the total power supply start buttons SB2 (1, 3) and (5, 7), the bell alarm HA1 (3, N) alarms to prompt that the power supply is in power-on operation, the coil (7, N) of the total power supply alternating current contactor KM1 is electrified and closed, the total power supply indicator HL1 (7, N) is on, the second normally open contact (5, 7) of the total power supply alternating current contactor KM1 connected with the total power supply start-stop key selection switch SB2 (5, 7) in parallel is closed and self-locked, the first normally open contact (L, 1) of the total power supply alternating current contactor KM1 connected with the first normally open contact (L, 1) of the power supply start-stop key selection switch SA1 is closed, and the third normally open contact (1, 9) of the total power supply alternating current contactor KM1 connected with the first normally open contact (L, 1) of the power supply start-stop key selection switch SA1 is closed, and the total power supply is started.
When the servo power supply starting buttons SB4 (11 and 13) are pressed, coils (13 and N) of the servo power supply alternating current contactor KM2 are electrified and attracted, the servo power supply indicating lamps HL2 (13 and N) are on, the second normally open contacts (11 and 13) of the servo power supply alternating current contactor KM2 connected with the servo power supply starting buttons SB4 (11 and 13) in parallel are closed and self-locked, the first normally open contacts (1 and 5) of the servo power supply alternating current contactor KM2 connected with the normally closed contacts (1 and 5) of the total power supply stopping button SB1 are closed, and the servo power supply is started.
The first normally open contacts (L, 1) and (9, 11) of the power on-off key selection switch SA1 are disconnected, the servo power stop buttons SB3 (9, 11) are pressed, the coils (13, N) of the servo power alternating current contactor KM2 are powered off and released, the servo power indicator lamp HL2 (13, N) is turned off, the second normally open contacts (11, 13) of the servo power alternating current contactor KM2 connected in parallel with the servo power start buttons SB4 (11, 13) are disconnected, the first normally open contacts (1, 5) of the servo power alternating current contactor KM2 connected in parallel with the normally closed contacts (1, 5) of the total power stop button SB1 are disconnected, and the servo power is stopped.
When the main power supply stop button SB1 (1, 5) is pressed, the coil (7, N) of the main power supply alternating current contactor KM1 is powered off and released, the main power supply indicator lamp HL1 (7, N) is turned off, the second normally open contact (5, 7) of the main power supply alternating current contactor KM1 connected in parallel with the main power supply start button SB2 (5, 7) is disconnected, the first normally open contact (L, 1) of the main power supply alternating current contactor KM1 connected in parallel with the first normally open contact (L, 1) of the power supply start-stop key selection switch SA1 is disconnected, the third normally open contact (1, 9) of the main power supply alternating current contactor KM1 connected in series with the first normally open contact (L, 1) of the power supply start-stop key selection switch SA1 is disconnected, and the main power supply is stopped.
In the embodiment, the on-off of the first normally open contact (L, 1) and the second normally open contact (9, 11) of the power supply start-stop key selection switch SA1 is operated by a key, the key can be specially charged, the power supply can be started only when the first normally open contact (L, 1) and the second normally open contact (9, 11) of the power supply start-stop key selection switch SA1 are closed, the power supply can be stopped only when the first normally open contact (L, 1) and the second normally open contact (9, 11) of the power supply start-stop key selection switch SA1 are opened, misoperation damage to equipment is prevented, and safety accidents are avoided.
In this embodiment, the third normally open contact (1, 9) of the ac contactor KM1 is connected in series before the power supply is turned on and off, and the main power supply must be turned on first and then the servo power supply must be turned on.
In this embodiment, the normally closed contacts (1, 5) of the total power supply stop button SB1 are connected in parallel with the first normally open contacts (1, 5) of the servo power supply ac contactor KM2, the servo power supply is not stopped, and the total power supply is not stopped.
In summary, based on the automatic fault alarm circuit of the corrugated paper printer, the monitoring center synchronously starts along with the starting of the power supply sequence start-stop misoperation prevention circuit of the corrugated paper printer (preferably, switches back to a dormant state along with the power failure of HA 1), and the power supply sequence start-stop misoperation prevention circuit of the corrugated paper printer adds misoperation prevention and sequence start-stop functions, so that the electric control of the corrugated paper printer is safer and more efficient, the equipment damage, personal safety and product waste caused by unintentional power supply misoperation are avoided, and therefore, the invention can reject the power supply misoperation fault from the monitored fault types, thereby increasing the accuracy and maneuverability of fault alarm and laying a foundation for realizing rapid fault processing.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. An automatic fault alarm circuit for a corrugated paper printer, comprising:
the alarm information sensor is used for collecting alarm information;
the monitoring centers are connected with the alarm information sensors and are connected with voice alarms which are deployed on the corrugated paper printing machine and pre-record fault voice information, so that when the alarm information is acquired by the information sensors, the voice alarms are informed to automatically alarm; and
the ring alarm HA1 is arranged in the power supply sequence start-stop misoperation prevention circuit of the corrugated board printer and is used for generating a driving signal after being electrified and transmitting the driving signal to the monitoring center so as to wake up the monitoring center to switch from a dormant state to a normal monitoring state;
wherein, corrugated container board printer power sequence opens stops and prevents maloperation circuit still includes:
nodes 1,3, 5,7, 9,11 and 13 distributed between the L end and the N end, wherein the nodes are connecting points between two circuit elements; the circuit element includes: the power supply start-stop key selection switch SA1 is provided with two linked normally open contacts; the main power supply alternating current contactor KM1 is provided with three linked normally open contacts and a coil; a total power supply stop button SB1; the main power supply starting button SB2 is provided with two linked normally open contacts; the servo power supply alternating current contactor KM2 is provided with two linked normally open contacts and a coil; servo power stop button SB3; a servo power supply start button SB4; total power indicator HL1 and servo power indicator HL2;
each node divides a circuit between the L end and the N end into a ring branch, a total power supply indication branch, a total power supply starting branch, a servo power supply indication branch and a servo power supply starting branch; two nodes corresponding to two ends are used as element marks, and the power supply sequence start-stop misoperation prevention circuit of the corrugated board printer specifically comprises:
the first normally open contact (L, 1) of the power supply start-stop key selection switch SA1 is connected in parallel with the first normally open contact (L, 1) of the total power supply alternating current contactor KM 1;
the first normally open contact (L, 1) of the main power alternating current contactor KM1 is connected in series with the first normally open contact (1, 3) of the main power starting button SB2 and the bell alarm HA1 (3, N);
the normally closed contacts (1, 5) of the total power supply stop button SB1 are connected in parallel with the first normally open contacts (1, 5) of the servo power supply alternating current contactor KM 2;
the second normally open contacts (5, 7) of the main power supply starting button SB2 are connected in parallel with the second normally open contacts (5, 7) of the main power supply alternating current contactor KM 1;
the coils (7, N) of the total power alternating current contactor KM1 are connected with the total power indicator lamp HL1 (7, N) in parallel;
the normally closed contacts (1, 5) of the main power supply stop button SB1 are connected in series with the second normally open contacts (5, 7) of the main power supply start button SB2 and the main power supply indicator lamp HL1 (7, N);
the first normally open contact (L, 1) of the power supply start-stop key selection switch SA1 is connected in series with the first normally open contact (1, 5) of the servo power supply alternating current contactor KM2, the second normally open contact (5, 7) of the total power supply alternating current contactor KM1 and the coils (7, N) of the total power supply alternating current contactor KM 1;
the second normally open contacts (9, 11) of the power supply start-stop key selection switch SA1 are connected in parallel with the normally closed contacts (9, 11) of the servo power supply stop button SB3;
the normally open contacts (11, 13) of the servo power supply starting button SB4 are connected in parallel with the second normally open contacts (11, 13) of the servo power supply alternating current contactor KM 2;
the servo power supply indicator lamp HL2 (13, N) is connected with the coils (13, N) of the servo power supply alternating current contactor KM2 in parallel;
the third normally open contact (1, 9) of the total power alternating current contactor KM1 is connected in series with the normally closed contacts (9, 11) of the servo power stop button SB3, the normally open contacts (11, 13) of the servo power start button SB4 and the servo power indicator lamp HL2 (13, N);
the second normally open contacts (9, 11) of the power on-off key selection switch SA1 are connected in series with the second normally open contacts (11, 13) of the servo power alternating current contactor KM2 and the coils (13, N) of the servo power alternating current contactor KM 2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711223989.2A CN107856410B (en) | 2017-11-29 | 2017-11-29 | Automatic fault alarm circuit for corrugated paper printer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711223989.2A CN107856410B (en) | 2017-11-29 | 2017-11-29 | Automatic fault alarm circuit for corrugated paper printer |
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| CN107856410A CN107856410A (en) | 2018-03-30 |
| CN107856410B true CN107856410B (en) | 2024-04-12 |
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| CN201711223989.2A Active CN107856410B (en) | 2017-11-29 | 2017-11-29 | Automatic fault alarm circuit for corrugated paper printer |
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| CN204010212U (en) * | 2014-08-06 | 2014-12-10 | 金川集团股份有限公司 | A kind of fire alarm remote monitoring and warning system |
| CN107263933A (en) * | 2017-07-27 | 2017-10-20 | 广西真龙实业有限责任公司 | A kind of multi-functional, alarming display device for corrugated board production line |
| CN207825732U (en) * | 2017-11-29 | 2018-09-07 | 株洲三新包装技术有限公司 | Corrugated paper printing machine automatic failure alarm circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2440246Y (en) * | 2000-09-25 | 2001-07-25 | 曹升侠 | Micro speech-sound and ring composite alarming sounding device for railway junction |
| CN201619258U (en) * | 2009-10-21 | 2010-11-03 | 上海朝昌包装机械有限公司 | Corrugated paper packaging machine with paper-blockage alarm |
| CN102992062A (en) * | 2012-12-31 | 2013-03-27 | 株洲三新包装技术有限公司 | Corrugated board printing machine and automatic stop control system for paper feeding failure thereof |
| CN204010212U (en) * | 2014-08-06 | 2014-12-10 | 金川集团股份有限公司 | A kind of fire alarm remote monitoring and warning system |
| CN107263933A (en) * | 2017-07-27 | 2017-10-20 | 广西真龙实业有限责任公司 | A kind of multi-functional, alarming display device for corrugated board production line |
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| CN107856410A (en) | 2018-03-30 |
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