CN115629568B - Intelligent switch control device with compensation electronic cam - Google Patents
Intelligent switch control device with compensation electronic cam Download PDFInfo
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- CN115629568B CN115629568B CN202211405872.7A CN202211405872A CN115629568B CN 115629568 B CN115629568 B CN 115629568B CN 202211405872 A CN202211405872 A CN 202211405872A CN 115629568 B CN115629568 B CN 115629568B
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- 238000004891 communication Methods 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/15—Plc structure of the system
- G05B2219/15106—High speed limited function sub plc together with slow speed general
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention relates to an intelligent switch control device with compensation electronic cam, comprising: a plc controller for setting an ON set angle value delta a, an OFF set angle value delta b, a maximum transport speed value V max and a minimum transport speed value V min of the disposable hygienic product; the speed acquisition terminal is used for acquiring the conveying speed V 1 of the disposable sanitary articles; the rotation sensor is used for detecting the current rotation angle delta 1 of the mechanical cam; calculating a speed range V s, a current speed deviation V', an ON compensation angle delta a, an ON logic angle delta a1, an OFF compensation angle delta b and an OFF logic angle delta b1; the ON setting angle value δ a =on logic angle δ a1 +n×360° of the mechanical cam, and the OFF setting angle value δ b =on logic angle δ b1 +n×360 °. The invention can synchronously adjust the ON setting angle and the OFF setting angle of the electronic cam ON line according to the conveying speed of the disposable sanitary articles.
Description
Technical Field
The invention relates to the technical field of electronic cam control, in particular to an intelligent switch control device with a compensation electronic cam.
Background
The reversing mechanism, the pushing mechanism, the folding mechanism and other mechanisms in the disposable sanitary article production equipment all use mechanical cam structures. The cam curve of a mechanical cam is typically constructed with an electronic cam opening, and the output of the electronic cam is set in units of DOG. A DOG is divided into a DOG WIDTH part and a DOG INTERVAL part, wherein a DOGWIDTH part outputs an ON signal for the electronic cam, and a start angle (hereinafter defined as an ON setting angle) and a stop angle (hereinafter defined as an OFF setting angle) are required to be set. Corresponding DOGINTERVAL outputs an OFF signal for the electronic cam.
At present, the speed of the disposable sanitary product production equipment for producing the disposable sanitary product (such as paper diapers) can reach more than 300 sheets/min, and in the actual production process, the conveying speed of the disposable sanitary product is not constant, but is continuously adjusted to be in a continuously fluctuating and changing state above and below a set speed value. However, the control of the mechanical cam structure in the existing disposable hygienic product production equipment is not accurate enough, or the timing of outputting the control signal by the mechanical cam structure is not accurate; more specifically, the ON setting angle and the OFF setting angle of the electronic cam are not synchronously adjusted with the conveying speed of the disposable sanitary products, which results in that the produced disposable sanitary products do not maintain strict consistency. For example, disposable sanitary products are required to be folded in half, not in accordance with the folding in half; the mechanical cam structure is required to change 90 degrees, actually changes only 87 degrees, and the like, and the timing of outputting the control signal is inaccurate.
Aiming at the situation, the invention creatively designs an intelligent switch control system with a compensation electronic cam, which is applied to the production of disposable sanitary products, and the ON setting angle and the OFF setting angle of the electronic cam are synchronously adjusted ON line according to the conveying speed of the disposable sanitary products.
Disclosure of Invention
Therefore, in order to solve the above-mentioned problems, the present invention provides an intelligent switch control device with a compensation electronic cam, which can adjust the ON setting angle and the OFF setting angle of the electronic cam synchronously ON line according to the conveying speed of the disposable sanitary articles.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
an intelligent switch control device with a compensation electronic cam is used for detecting the rotation angle of a cam shaft of a mechanical cam and outputting a switch control signal;
Comprising the following steps:
A plc controller for setting an initial ON set angle value delta a, an initial OFF set angle value delta b, a maximum transport speed value V max and a minimum transport speed value V min of the disposable hygienic product;
The speed acquisition terminal is used for acquiring the conveying speed of the disposable sanitary products, and the conveying speed V 1 of the disposable sanitary products is reached when the speed is rotated to delta a in the current rotation period;
The rotary change sensor is connected to the mechanical cam shaft and used for detecting the current rotation angle delta 1 of the mechanical cam;
The speed acquisition terminal and the rotary sensor are respectively and electrically connected with the PLC;
The plc controller receives the current conveying speed V 1 of the disposable sanitary articles in the current rotation period of the cam shaft of the mechanical cam, and calculates:
Maximum conveying speed value V max -minimum conveying speed value V min = speed range V s;
Current conveying speed V 1 -minimum conveying speed value V min = current speed deviation V';
Initial ON set angle value δ a (current speed deviation V'/speed range V s) =on compensation angle Δa;
an initial ON set angle value δ a —on compensation angle Δa=on logic angle δ a1, then the n-th rotation period of the cam shaft of the mechanical cam ON set angle value δ a =on logic angle δ a1 +n×360°;
Initial OFF setting angle value δ b (current speed deviation V'/speed range V s) =off compensation angle Δb;
the initial OFF setting angle value δ b —on compensation angle Δb=off logic angle δ b1, then the camshaft nth rotation period OFF setting angle value δ b =on logic angle δ b1 +n×360° of the mechanical cam;
And when the rotation sensor detects that the current rotation angle delta 1∈[δa1+n*360°,δb1 +n of the mechanical cam is 360 degrees in the nth rotation period, the plc controller outputs a switch control signal.
Further, the system also comprises an upper computer;
The upper computer is in communication connection with the plc controller;
And setting an initial ON set angle value delta a, an initial OFF set angle value delta b, a maximum conveying speed value V max and a minimum conveying speed value V min of the disposable sanitary products through the ON-site human-computer interaction interface.
Further, the rotary sensor adopts an absolute value encoder.
By adopting the technical scheme, the invention has the beneficial effects that:
The intelligent switch control device with the compensation electronic cam detects the conveying speed of the disposable sanitary articles through the speed acquisition terminal creatively, and synchronously adjusts the ON setting angle and the OFF setting angle of the electronic cam ON line according to the conveying speed of the disposable sanitary articles. When the rotary sensor detects that the cam shaft of the mechanical cam rotates to [ delta a1+n*360°,δb1 +n x 360 DEG ] in the nth rotation period, the plc controller outputs a switch control signal, so that the accuracy of the time when the plc controller outputs the switch control signal is kept under different conveying speeds of disposable sanitary articles.
Drawings
Fig. 1 is a block diagram of a circuit connection of the present invention.
Fig. 2 is a schematic view of the structure of a mechanical cam.
Description of the drawings: 1. a mechanical cam; 10. a cam shaft; 100. a plc controller; 200. a speed acquisition terminal; 300. a spin-change sensor; 400. and an upper computer.
Detailed Description
The invention will now be further described with reference to the drawings and detailed description.
Referring to fig. 1 and 2, the present embodiment provides an intelligent switch control device with compensation electronic cam for detecting the rotation angle of a mechanical cam 1 and outputting a switch control signal.
The mechanical cam 1 is an existing device, and the structure of the mechanical cam 1 will not be described in detail here.
Further comprises:
plc controller 100, speed acquisition terminal 200, rotation sensor 300, and host computer 400.
In this embodiment, preferably, the host computer 400 uses a field man-machine interaction terminal.
The plc controller 100 is set with an initial ON setting angle value δ a, an initial OFF setting angle value δ b, a maximum conveyance speed value V max of the disposable sanitary product, and a minimum conveyance speed value V min of the disposable sanitary product by the host computer 400.
The speed acquisition terminal 200 is provided on a disposable hygienic product production line for detecting the conveying speed of disposable hygienic products.
In this embodiment, the speed acquisition terminal 200 employs a rotation speed sensor.
During installation, the rotation speed sensor is contacted with the disposable sanitary articles (not shown in the figure), the rotation speed sensor is driven to rotate during conveying of the disposable sanitary articles, and the conveying speed V 1 of the disposable sanitary articles can be calculated through the rotation speed of the rotation speed sensor.
In this embodiment, the resolver sensor 300 employs an absolute value encoder that employs gray codes.
The rotation sensor 300 is connected to the cam shaft 10 of the mechanical cam 1 (not shown in the drawings, but for those skilled in the art, the technology of mounting the rotation sensor 300 on the cam shaft 10 is a conventional technology, which will not be described in detail herein), and the rotation sensor 300 is used to detect the current rotation angle δ 1 of the mechanical cam 1 and transmit the detected current rotation angle δ 1 to the plc100.
The speed acquisition terminal 200 and the rotation sensor 300 are respectively and electrically connected with the I/O interface of the PLC controller 100.
The upper computer 400 is communicatively connected to the communication interface of the plc controller 100.
The plc controller 100 receives a current delivery speed V 1 of the disposable hygienic device (not shown) during a current rotation period of the mechanical cam 1.
And calculating:
(1) Transport speed value V max -minimum transport speed value V min = speed range V s.
(2) Current transport speed V 1 -minimum transport speed value V min = current speed deviation V'.
(3) The initial ON set angle value δ a (current speed deviation V'/speed range V s) =on compensation angle Δa.
(4) The initial ON set angle value δ a -ON offset angle Δa=on logic angle δ a1, and thus the n-th rotation period ON set angle value δ a =on logic angle δ a1 +n×360 ° of the mechanical cam 1 can be obtained.
(5) The initial OFF setting angle value δ b (current speed deviation V'/speed range V s) =off compensation angle Δb.
(6) The initial OFF setting angle value δ b -ON compensation angle Δb=off logic angle δ b1, and thus the n-th rotation period OFF setting angle value δ b =on logic angle δ b1 +n×360 ° of the mechanical cam 1 can be obtained.
When the rotational sensor 300 detects that the mechanical cam 1 rotates to [ δ a1+n*360°,δb1 +n×360° ] in the n-th rotation period, the plc controller 100 outputs a switching control signal. Thus, the plc controller 100 maintains the accuracy of the timing of outputting the switching control signal at different disposable hygienic product conveying speeds.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (3)
1. An intelligent switch control device with a compensation electronic cam is used for detecting the rotation angle of a cam shaft of a mechanical cam and outputting a switch control signal;
characterized by comprising the following steps:
A plc controller for setting an initial ON set angle value delta a, an initial OFF set angle value delta b, a maximum transport speed value V max and a minimum transport speed value V min of the disposable hygienic product;
The speed acquisition terminal is used for acquiring the conveying speed of the disposable sanitary products, and the conveying speed V 1 of the disposable sanitary products is reached when the speed is rotated to delta a in the current rotation period;
The rotary change sensor is connected to the mechanical cam shaft and used for detecting the current rotation angle delta 1 of the mechanical cam;
The speed acquisition terminal and the rotary sensor are respectively and electrically connected with the PLC;
The plc controller receives the current conveying speed V 1 of the disposable sanitary articles in the current rotation period of the cam shaft of the mechanical cam, and calculates:
Maximum conveying speed value V max -minimum conveying speed value V min = speed range V s;
Current conveying speed V 1 -minimum conveying speed value V min = current speed deviation V';
Initial ON set angle value δ a (current speed deviation V'/speed range V s) =on compensation angle Δa;
an initial ON set angle value δ a —on compensation angle Δa=on logic angle δ a1, then the n-th rotation period of the cam shaft of the mechanical cam ON set angle value δ a =on logic angle δ a1 +n×360°;
Initial OFF setting angle value δ b (current speed deviation V'/speed range V s) =off compensation angle Δb;
the initial OFF setting angle value δ b —on compensation angle Δb=off logic angle δ b1, then the camshaft nth rotation period OFF setting angle value δ b =on logic angle δ b1 +n×360° of the mechanical cam;
And when the rotation sensor detects that the current rotation angle delta 1∈[δa1+n*360°,δb1 +n of the mechanical cam is 360 degrees in the nth rotation period, the plc controller outputs a switch control signal.
2. The intelligent switch control device with compensation electronic cam according to claim 1, wherein: the system also comprises an upper computer;
The upper computer is in communication connection with the plc controller;
the initial ON set angle value delta a, the initial OFF set angle value delta b, the maximum conveying speed value V max and the minimum conveying speed value V min of the disposable sanitary products are set through the ON-site human-computer interaction interface.
3. The electronic cam intelligent switch control device with compensation according to claim 1 or 2, wherein: the rotary sensor adopts an absolute value encoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211405872.7A CN115629568B (en) | 2022-11-10 | 2022-11-10 | Intelligent switch control device with compensation electronic cam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211405872.7A CN115629568B (en) | 2022-11-10 | 2022-11-10 | Intelligent switch control device with compensation electronic cam |
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| CN115629568A CN115629568A (en) | 2023-01-20 |
| CN115629568B true CN115629568B (en) | 2024-07-26 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103676769A (en) * | 2013-12-20 | 2014-03-26 | 广州市兴世机械制造有限公司 | Electronic cam control system and method of programmable logic controller |
| CN106094718A (en) * | 2016-02-23 | 2016-11-09 | 泉州市汉威机械制造有限公司 | A kind of electric cam compensating control method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200180942Y1 (en) * | 1994-05-28 | 2000-05-15 | 김재복 | Position control apparatus of a variable speed motor equipped to rotary motion machine |
| CN1314379C (en) * | 2003-12-14 | 2007-05-09 | 福建恒安集团有限公司 | Method for preparing short pants type paper urine pants and article fabricated |
| KR101408247B1 (en) * | 2013-08-19 | 2014-06-16 | 김승우 | Plc controller |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103676769A (en) * | 2013-12-20 | 2014-03-26 | 广州市兴世机械制造有限公司 | Electronic cam control system and method of programmable logic controller |
| CN106094718A (en) * | 2016-02-23 | 2016-11-09 | 泉州市汉威机械制造有限公司 | A kind of electric cam compensating control method |
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