CN102787441A - Method for controlling combined cam color changing base of computerized flat knitting machine - Google Patents
Method for controlling combined cam color changing base of computerized flat knitting machine Download PDFInfo
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- CN102787441A CN102787441A CN2012103191961A CN201210319196A CN102787441A CN 102787441 A CN102787441 A CN 102787441A CN 2012103191961 A CN2012103191961 A CN 2012103191961A CN 201210319196 A CN201210319196 A CN 201210319196A CN 102787441 A CN102787441 A CN 102787441A
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Abstract
The invention discloses a method for controlling a combined cam color changing base of a computerized flat knitting machine. According to the method, firstly whether a cam stays in the initial position or not is judged, the cam is restored if the cam does not stay in the initial position, and a driving element of a color changing mechanism drives the cam of the color changing mechanism to rotate according to a signal of a driving module of the color changing mechanism; then whether the rotation angle of the cam is accurate or not is judged, an alarm signal is sent by an alarm module and the driving element is locked if the angle is not accurate, whether a signal of continuous rotation exists or not is judged if the rotation angle of the cam is accurate, the steps of driving the cam to rotate and the subsequent detection are repeatedly carried out according to the rotation signal if the rotation signal exists, and the procedure is completed if no rotation signals exist. By adopting the control method, the accuracy of each rotation angle of the combined cam can be ensured, and the function of feeding back failure information is also available.
Description
Technical field
The present invention relates to a kind of control method, particularly a kind of control method of computer flat knitting machine compound cam formula colour changing pedestal.
Background technology
Computer flat knitting machine in the course of the work, the yarn of often using multiple color constitutes the tissue of fabric, this just needs through the different thread-carrier balladeur train (also claiming Wu Sizuo) of colour changing device selection, the yarn that drives in the corresponding yarn mouth weaves various fabrics.
Existing colour changing device generally all adopts electromagnet to cooperate the mode of lever pushing to realize its function, and lever is the seesaw type setting.When the electromagnet push rod stretches out, promote an end of lever, the other end of lever then perk drive switching slide block moves upward, and does not select the thread-carrier balladeur train; During the electromagnet rams retracted, lever is inoperative, switches slide block and under the effect of spring, moves downward selection thread-carrier balladeur train.
The upper end of above-mentioned thread-carrier balladeur train is a groove-like low between the senior middle school of both sides; Switching slide block falls into after moving downward in the groove of thread-carrier balladeur train; The switching slide block is blocked on the both sides of groove; The overline bridge drive switching slide block of computer flat knitting machine drives the thread-carrier balladeur train and slides when side-to-side movement, promptly selected the thread-carrier balladeur train; After the switching slide block moved upward, it broke away from the groove of thread-carrier balladeur train upper end, and the switching slide block has then driven not the thread-carrier balladeur train and slided when side-to-side movement, promptly do not select the thread-carrier balladeur train.
No matter be that the domestic or external computer flat knitting machine of manufacturing generally all adopts above-mentioned principle at present, its shortcoming is:
1, each electromagnet all has the connection control line, and the magnetic field of adding electromagnet is bigger, causes the interference of automatically controlled part bigger, can occur head braiding motion not according to rule, random needle selection, spend order problem such as make mistakes, influence automatically controlled stability and reliability;
2, electromagnet moment work impulsive force is big, and easy the damage switched frame and electromagnet self, switches and launches the frequency height, and noise is big, and maintenance rate is high, replacing is inconvenient;
3, during single electromagnet cisco unity malfunction, can not confirm as early as possible, also can't report to the police.
For this reason, we have developed a kind of cam that adopts and have driven the colour changing pedestal that switches slide block.The driving shaft of desirable state yes drive mechanism cam, thus drive the certain angle of cam rotation, make the ledge or the sunk part work of cam, thereby select corresponding switching slide block.From above-mentioned we can know that the accuracy of angular displacement of the cam is very important, it directly influence the correctness of selection switching slide block.For example; When adopting stepper motor as the power source of driving shaft; Stepper motor is at the volley because of destroying synchronously the rotational angle situation generation not in place that (step-out of promptly claiming usually) can cause above reasons such as loads; Can cause angular displacement of the cam incorrect this moment, and influence selects to switch the correctness of slide block.
Summary of the invention
Technical problem to be solved by this invention provides a kind of control method of computer flat knitting machine compound cam formula colour changing pedestal, and this control method can be guaranteed the accuracy of colour changing pedestal selection switching slide block.
In order to solve above-mentioned technical problem; Technical scheme of the present invention is: a kind of control method of computer flat knitting machine compound cam formula colour changing pedestal; This colour changing pedestal comprises a plurality of color replacing mechanisms, and said color replacing mechanism comprises the switching slide block and the cam that drives the switching slide block that is used for selecting the thread-carrier balladeur train, and said cam is installed on the driving shaft; Said driving shaft or cam are provided with respectively and position sensor, induction point that state sensor is corresponding, and said control method may further comprise the steps:
(1) judges that through the position sensor detection whether cam is at initial position;
(2) if cam not at initial position, then resets execution in step (1) to cam; If cam is at initial position, execution in step (3) then;
(3) the color replacing mechanism driving element drives the cam rotation of color replacing mechanism according to the signal of color replacing mechanism driver module, thereby selects corresponding thread-carrier balladeur train;
(4) state sensor detects and judges whether the angle of cam rotation is correct;
(5) if the angle of cam rotation is incorrect, then send alarm signal and lock drive element through alarm module; If the angle of cam rotation is execution in step (6) then correctly;
(6) judge whether the signal of rotation, if having then according to the signal that rotates, execution in step (3)～(5); If the signal that does not have to rotate then finishes.
Said state sensor is a Hall element, and said driving shaft or cam are provided with inductive magnetic steel, and said Hall element is counted the angle that detects cam rotation through inductive magnetic steel.
Said driving element is preferably stepper motor.
In order to practice thrift the limited space of colour changing pedestal, help practicing thrift cost, said driving shaft is provided with a plurality of cams.
Control method of the present invention can guarantee that each rotational angle of compound cam is accurate, improves colour changing pedestal job stability, reduces the fault rate of computer flat knitting machine; It also has the function of feedback fault message simultaneously, makes producers in time find fault, so just reduces the defect rate of fabric, improves the quality of fabric.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further detailed explanation.
Fig. 1 is a computer flat knitting machine compound cam formula colour changing base construction sketch map.
Fig. 2 is a control method flow chart of the present invention.
The specific embodiment
As shown in Figure 1; Computer flat knitting machine compound cam formula colour changing pedestal comprises a plurality of color replacing mechanisms; Said color replacing mechanism comprises the switching slide block and the cam that drives the switching slide block that is used for selecting the thread-carrier balladeur train; Said cam 1 is installed on the driving shaft 2, and said driving shaft 2 or cam 1 are provided with respectively the induction point 5 corresponding with position sensor 3, state sensor 4.
Said position sensor 3 detects the initial position signal of compound cam 1 in the described color replacing mechanism.
Said state sensor 4 detects rotary state (the being angle) signal of compound cam 1 in the described color replacing mechanism.Said state sensor 4 can be selected Hall element for use; Said driving shaft 2 or cam 1 are provided with inductive magnetic steel (being induction point 5); Magnet steel is by the even angle setting; Said Hall element is counted through inductive magnetic steel, and the angle that the numeral of counter multiply by the magnet steel distribution just can obtain the angle that cam 1 rotates.
The information that position sensor 3, state sensor 4 are gathered passes to master controller through signal acquisition module.
The preferred motor 6 of color replacing mechanism driving element, further preferred stepper motor.
And; We adopt a driving shaft 2 to drive a plurality of cams 1; For example adopt motor 6 to drive a plurality of cams 1 (as driving four cams), need carry out preferably the profile of cam 1 like this, so that mutually noninterfere mutually between the switching slide block of selecting and the unselected switching slide block through motor shaft.
Knitting program is input in the master controller; Desirable workflow is: master controller sends driving command to the color replacing mechanism driver module; The color replacing mechanism driver module drives the motion of color replacing mechanism driving element according to driving command, selects different thread-carrier balladeur trains to carry out braid movement thereby drive cam 1 accurately rotates.
But above-mentioned flow process only is a perfect condition, and usually there is deviation in the angle that drives cam 1 rotation, and this is the degree of accuracy of influence selection thread-carrier balladeur train just.The present invention solves this problem through following control method, and is as shown in Figure 2, and this control method may further comprise the steps:
(1) master controller sends driving command according to the setting of knitting program to the color replacing mechanism driver module; Before driving; At first detect the initial position signal of color replacing mechanism cam 1 through position sensor 3; Whether judge cam 1 at initial position according to this signal, position sensor passes to master controller through signal acquisition module with this signal, by master controller whether cam 1 is judged at the signal of initial position.
(2) if cam 1 not at initial position, then resets execution in step (1) to cam 1; If cam 1 is at initial position, execution in step (3) then.
(3) the color replacing mechanism driver module is connected with master controller, and described master controller sends driving command to described color replacing mechanism driver module; The color replacing mechanism driving element is connected with the color replacing mechanism driver module, and said color replacing mechanism driving element selects different thread-carrier balladeur trains to carry out braid movement according to cam 1 rotation that driving command drives color replacing mechanism.
Whether (4) detect the angle of judging cam 1 rotation through state sensor correct; Be the rotary state signal that state sensor 4 detects color replacing mechanism cam 1, take place in order to judge, to prevent the rotational angle situation not in place that reasons such as stepper motor step-out for example cause.
(5) if the angle that cam 1 rotates is incorrect, then send alarm signal and lock drive element through alarm module; If the angle that cam 1 rotates is execution in step (6) then correctly; Certainly, above-mentionedly also can this signal be passed to computer flat knitting machine when sending alarm signal and lock drive element, the work of control computer flat knitting machine complete machine.
(6) judge whether the signal of rotation, if having then according to the signal that rotates, execution in step (3)～(5); If the signal that does not have to rotate then finishes.
The inventive method control is simple, and when driving element adopted stepper motor, only needing to send certain pulse to stepper motor can drive, and interface is few on the hardware designs; Position sensor and state sensor can guarantee that each rotational angle of compound cam is accurate; The function that has the feedback fault simultaneously.
The foregoing description does not limit the present invention in any way, and every employing is equal to the technical scheme that replacement or the mode of equivalent transformation obtain and all drops in protection scope of the present invention.
Claims (4)
1. the control method of a computer flat knitting machine compound cam formula colour changing pedestal; It is characterized in that this colour changing pedestal comprises a plurality of color replacing mechanisms; Said color replacing mechanism comprises the switching slide block and the cam that drives the switching slide block that is used for selecting the thread-carrier balladeur train; Said cam is installed on the driving shaft, and said driving shaft or cam are provided with respectively and position sensor, induction point that state sensor is corresponding, and said control method may further comprise the steps:
(1) judges that through the position sensor detection whether cam is at initial position;
(2) if cam not at initial position, then resets execution in step (1) to cam; If cam is at initial position, execution in step (3) then;
(3) the color replacing mechanism driving element drives the cam rotation of color replacing mechanism according to the signal of color replacing mechanism driver module, thereby selects corresponding thread-carrier balladeur train;
(4) state sensor detects and judges whether the angle of cam rotation is correct;
(5) if the angle of cam rotation is incorrect, then send alarm signal and lock drive element through alarm module; If the angle of cam rotation is execution in step (6) then correctly;
(6) judge whether the signal of rotation, if having then according to the signal that rotates, execution in step (3)～(5); If the signal that does not have to rotate then finishes.
2. the control method of computer flat knitting machine compound cam formula colour changing pedestal according to claim 1; It is characterized in that: said state sensor is a Hall element; Said driving shaft or cam are provided with inductive magnetic steel, and said Hall element is counted the angle that detects cam rotation through inductive magnetic steel.
3. the control method of computer flat knitting machine compound cam formula colour changing pedestal according to claim 1, it is characterized in that: said driving element is a stepper motor.
4. the control method of computer flat knitting machine compound cam formula colour changing pedestal according to claim 3, it is characterized in that: said driving shaft is provided with a plurality of cams.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103191961A CN102787441B (en) | 2012-08-31 | 2012-08-31 | Method for controlling combined cam color changing base of computerized flat knitting machine |
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| CN2012103191961A CN102787441B (en) | 2012-08-31 | 2012-08-31 | Method for controlling combined cam color changing base of computerized flat knitting machine |
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| CN102787441A true CN102787441A (en) | 2012-11-21 |
| CN102787441B CN102787441B (en) | 2013-11-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108823777A (en) * | 2018-09-21 | 2018-11-16 | 泉州市永祺塑胶电子有限公司 | Computer flat knitting machine yarn nozzle runs assembly |
| CN109765043A (en) * | 2019-01-28 | 2019-05-17 | 宁波星睿轩智能科技有限公司 | A kind of computer flat knitting machine color changing base detection device |
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| US4354363A (en) * | 1979-12-10 | 1982-10-19 | Shima Idea Center Co., Ltd. | Means for controlling the movement of yarn carriers along with a carriage in flat knitting machines |
| US4821534A (en) * | 1987-02-18 | 1989-04-18 | H. Stoll Gmbh & Co. | Apparatus for controlling the carriage drive motor of a flat bed knitting machine |
| JPH01266252A (en) * | 1988-04-13 | 1989-10-24 | Brother Ind Ltd | Controlling apparatus for knitting machine based on color-arrangement data |
| EP0872587A2 (en) * | 1997-04-15 | 1998-10-21 | Shima Seiki Manufacturing, Ltd. | A yarn feeding system for a flat knitting machine |
| CN101067400A (en) * | 2007-04-20 | 2007-11-07 | 李红霆 | Engine camshaft rotating position signal disc |
| CN101670712A (en) * | 2008-09-08 | 2010-03-17 | 山东新北洋信息技术股份有限公司 | Device for detecting position of print head and printer provided with same |
| CN201842947U (en) * | 2010-08-18 | 2011-05-25 | 李宾 | Transmission device for triangular mechanism of full-computerized flat knitting machine |
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2012
- 2012-08-31 CN CN2012103191961A patent/CN102787441B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4354363A (en) * | 1979-12-10 | 1982-10-19 | Shima Idea Center Co., Ltd. | Means for controlling the movement of yarn carriers along with a carriage in flat knitting machines |
| US4821534A (en) * | 1987-02-18 | 1989-04-18 | H. Stoll Gmbh & Co. | Apparatus for controlling the carriage drive motor of a flat bed knitting machine |
| JPH01266252A (en) * | 1988-04-13 | 1989-10-24 | Brother Ind Ltd | Controlling apparatus for knitting machine based on color-arrangement data |
| EP0872587A2 (en) * | 1997-04-15 | 1998-10-21 | Shima Seiki Manufacturing, Ltd. | A yarn feeding system for a flat knitting machine |
| CN101067400A (en) * | 2007-04-20 | 2007-11-07 | 李红霆 | Engine camshaft rotating position signal disc |
| CN101670712A (en) * | 2008-09-08 | 2010-03-17 | 山东新北洋信息技术股份有限公司 | Device for detecting position of print head and printer provided with same |
| CN201842947U (en) * | 2010-08-18 | 2011-05-25 | 李宾 | Transmission device for triangular mechanism of full-computerized flat knitting machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108823777A (en) * | 2018-09-21 | 2018-11-16 | 泉州市永祺塑胶电子有限公司 | Computer flat knitting machine yarn nozzle runs assembly |
| CN109765043A (en) * | 2019-01-28 | 2019-05-17 | 宁波星睿轩智能科技有限公司 | A kind of computer flat knitting machine color changing base detection device |
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| CN102787441B (en) | 2013-11-20 |
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